<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Amaro, P</style></author><author><style face="normal" font="default" size="100%">Schlesser, S.</style></author><author><style face="normal" font="default" size="100%">Guerra, M</style></author><author><style face="normal" font="default" size="100%">Le Bigot, E</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Szabo, C. I.</style></author><author><style face="normal" font="default" size="100%">Gumberidze, A.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Absolute measurements and simulations of x-ray line energies of highly charged ions with a double-crystal spectrometer</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Sep 23</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://stacks.iop.org/1402-4896/2013/i=T156/a=014104?key=crossref.fbaa38a1c4861ecbc3a487c810be06f2</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">T156</style></volume><pages><style face="normal" font="default" size="100%">014104</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/61142F12-DD61-4175-879B-E79B4FE5C058</style></custom3><label><style face="normal" font="default" size="100%">r35498</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Szabo, C. I.</style></author><author><style face="normal" font="default" size="100%">Amaro, P</style></author><author><style face="normal" font="default" size="100%">Guerra, M</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Gumberidze, A.</style></author><author><style face="normal" font="default" size="100%">Attard, J</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Ion temperature and x-ray line width measurements of highly charged argon ions in an ECR ion source</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Sep 23</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://stacks.iop.org/1402-4896/2013/i=T156/a=014077?key=crossref.f2da41f889b9520c88b7506c96702da1</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">T156</style></volume><pages><style face="normal" font="default" size="100%">014077</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/AFCFECB6-089A-4B76-AF24-49C78D545A98</style></custom3><label><style face="normal" font="default" size="100%">r35499</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Marques, J. P.</style></author><author><style face="normal" font="default" size="100%">Costa, A. M.</style></author><author><style face="normal" font="default" size="100%">Martins, M. C.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Transition probability values of the 1s 22s3p 3P 0level in Be-like ions</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Sep 23</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://stacks.iop.org/1402-4896/2013/i=T156/a=014020?key=crossref.182cb63098e5f9d51f785868f187784d</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">T156</style></volume><pages><style face="normal" font="default" size="100%">014020</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/9E6439E8-157A-44DE-B42C-639966BDE48D</style></custom3><label><style face="normal" font="default" size="100%">r35497</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pé-Leve Santos, Sara C</style></author><author><style face="normal" font="default" size="100%">Cruz, Mariana Eloy</style></author><author><style face="normal" font="default" size="100%">Barroso, António M E</style></author><author><style face="normal" font="default" size="100%">Fonseca, Catarina P S</style></author><author><style face="normal" font="default" size="100%">Guerra, Mauro</style></author><author><style face="normal" font="default" size="100%">Carvalho, Maria Luisa</style></author><author><style face="normal" font="default" size="100%">Santos, Jose Paulo</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Elemental characterization of plants and soils in Panasqueira tungsten mining region</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Oct 16</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.springer.com/10.1007/s11368-013-0788-x</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">Online</style></volume><language><style face="normal" font="default" size="100%">English</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/9D7BDE6B-E109-4583-BC3C-B1C92FE59F73</style></custom3><label><style face="normal" font="default" size="100%">r35783</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cunha, Bárbara M P</style></author><author><style face="normal" font="default" size="100%">Trindade, Inês N</style></author><author><style face="normal" font="default" size="100%">Couto, Narciso A S</style></author><author><style face="normal" font="default" size="100%">Costa, P J</style></author><author><style face="normal" font="default" size="100%">Rodrigues, P.</style></author><author><style face="normal" font="default" size="100%">Barros, M. T.</style></author><author><style face="normal" font="default" size="100%">Costa, M. L.</style></author><author><style face="normal" font="default" size="100%">Duarte, M. F.</style></author><author><style face="normal" font="default" size="100%">Fernandez, M. T.</style></author><author><style face="normal" font="default" size="100%">Madeira, Paulo J Amorim</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Gas-phase interaction between nickel (II) and nitrobenzyl azides: An ESI-MSn study</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Oct 01</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1016/j.ijms.2013.05.012</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Elsevier B.V.</style></publisher><volume><style face="normal" font="default" size="100%">351</style></volume><pages><style face="normal" font="default" size="100%">27-36</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">International Journal of Mass Spectrometry, 351 (2013) 27-36. doi:10.1016/j.ijms.2013.05.012</style></abstract><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/384E67D2-B78E-41BE-A28D-AF8022524374</style></custom3><label><style face="normal" font="default" size="100%">r38356</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guerra, M</style></author><author><style face="normal" font="default" size="100%">Pinto, R. M.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Paiva, A C S</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Towards the assignment of the REMPI spectrum of Ph 2O using CIS and TD-DFT methods</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">May 09</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.tandfonline.com/doi/abs/10.1080/00268976.2013.783638</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">21</style></number><volume><style face="normal" font="default" size="100%">111</style></volume><pages><style face="normal" font="default" size="100%">3311-3319</style></pages><language><style face="normal" font="default" size="100%">English</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/3DFCCC5C-A958-44BE-BE15-571CF15AF063</style></custom3><label><style face="normal" font="default" size="100%">r30598</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">V. Fernandes</style></author><author><style face="normal" font="default" size="100%">I. Clemente</style></author><author><style face="normal" font="default" size="100%">C. Quaresma</style></author><author><style face="normal" font="default" size="100%">P. Vieira</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Development of an Equipment to Detect and Quantify Muscular Spasticity: Spastimed &amp;ndash; A New Solution</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">Spasticity is a known muscular tonus velocity dependent alteration which quantification in clinical practice is still based on subjective perception and scale grading through procedures that lack controlled protocols. In the research field, both physician&amp;rsquo;s and engineer&amp;rsquo;s researches have pointed the potentialities in the use of biomechanical magnitudes and their physiological meanings as much lesser subjective means of quantifying spasticity as well as its effects on patient daily life. Last, but not less important, this scientific and clinic urge is also justified by the high costs of treatments as well as the very tight relation they express between effectiveness and applied dose. As a consequence, this team of developers has been focused in creating a device to detect spasticity. During the validation of a first prototype with a small set of subjects, the obtained results were satisfyingly good as the device correctly detected 89% of the spastic subjects and 82% of the non-spastic subjects. Even so, the limitations found in the prototype concept itself led to a new development phase that resulted on a very different approach. SpastiMed, a motorized and electronically controlled device which is still on its validation phase but already showing an immense potential.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Coelho João M. P. ; Baião André ; Vieira Pedro</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Development of an optical simulator of the human eye</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">The optics of the human eye have for several years been the subject of careful physiological study. This study has led to the development of models characterizing its operation and allowed to predict its behavior. In general, these models are based on empirical data derived from statistical studies on specific populations. At the same time, different optical analysis techniques are being developed in order to study the eye. These techniques are based on projecting light into the eye or in using optical systems to observe the eye. Thus, it becomes important to have tools to simulate the human eye during the development of these techniques prior to its implementation using human subjects. Several simulators have been developed based on existing models, many of them using ZEMAX optical design program. However, in general, their use has been limited to simple models and/or dedicated analysis. However, the appearance of a toolbox that allows the programming software MatLab to command the optical design program opened a new range of control and analysis capabilities for systems modeled in ZEMAX. Using these tools, a dynamic simulator was developed that allows the user to optically characterize an eye based on age and distance to an object being observed accordingly with one existing model. The capabilities of both programs allowed obtaining a tool capable of not only helping the development of optical analysis techniques but also be used in developing new eye models or analyze eye safety issues. Its performance is presented and analysis examples shown. &amp;copy; (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">C. Quaresma</style></author><author><style face="normal" font="default" size="100%">A. Gabriel</style></author><author><style face="normal" font="default" size="100%">M. Forjaz Secca</style></author><author><style face="normal" font="default" size="100%">P. Vieira</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Development of Vertebral Metrics &amp;ndash; An Instrument to Analyse the Spinal Column</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">In order to outline prevention and intervention strategies in the PublicHealth area it is crucial to determine the quantitative characteristics of biomechanical changes in the spinal column. Most researchers links rachialgiae aetiology to these biomechanical modifications, but these studies are limited due to the invasive nature of the technics available for quantification of the spinal column anatomic parameters. . For this reasons it is important to develop non-invasive methodologies that can be applied to general population. Most of existing non-invansive techniques have the handicap of not providing an overall view of all biomechanical parameters of the spine. In order to fill this gap, it was built the Vertebral Metrics, a mechanical instrument designed to identify the X, Y, and Z positions of each spine apophyses (vertebrae), in a standing position. After its validation, the need has arisen to further develop this equipment in order to automate the data acquisition reducing the acquisition time and increasing its reprodubility. Therefore, a semi-automatic and non-invasive instrument was designed to detect the position of the spine apophyses (vertebrae). The aim of this paper is to describe the automation process concerning the collection of data with Vertebral Metrics.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">L. Martins</style></author><author><style face="normal" font="default" size="100%">R. Lucena</style></author><author><style face="normal" font="default" size="100%">J. Belo</style></author><author><style face="normal" font="default" size="100%">R. Almeida</style></author><author><style face="normal" font="default" size="100%">C. Quaresma</style></author><author><style face="normal" font="default" size="100%">A. P. Jesus</style></author><author><style face="normal" font="default" size="100%">P. Vieira</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Intelligent Chair Sensor &amp;ndash; Classification and Correction of Sitting Posture</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">In order to build an intelligent chair capable of posture detection and correction we developed a prototype that measures a pressure map of the chair&amp;rsquo;s seat pad and backrest and classifies the user posture. The posture classification was done using neural networks that were trained for 5 standardized postures achieving an overall classification of around 98%. Those neural networks were exported to a mobile application in order to do real-time classification of those postures. Using the same mobile application we devised two correction algorithms that were implemented in order to create an intelligent chair capable of posture detection and correction. The posture correction is forced through the change of the conformation of the chair&amp;rsquo;s seat and backrest by changing the pressure of eight pneumatic bladders.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Martins Leonardo</style></author><author><style face="normal" font="default" size="100%">Lucena Rui</style></author><author><style face="normal" font="default" size="100%">Belo João</style></author><author><style face="normal" font="default" size="100%">Santos Marcelo</style></author><author><style face="normal" font="default" size="100%">Quaresma Cláudia</style></author><author><style face="normal" font="default" size="100%">Jesus Adelaide P.</style></author><author><style face="normal" font="default" size="100%">and Vieira Pedro</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Intelligent Chair Sensor: Classiﬁcation of Sitting Posture</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">English</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">G. Lopes</style></author><author><style face="normal" font="default" size="100%">D. Tendeiro</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">P. Vieira</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Monte Carlo Simulation of Radiation through the Human Retina Using Geant4</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">Age-related macular degeneration (AMD) is a chronic and irreversible eye disease. It causes damage to the retina by accumulation of extracellular materials, which leads to loss of visual acuity. One of the most common signs of AMD is the appearance of drusen, yellowish irregular nodules. Because of its irreversible character, a timely diagnosis is important for early treatment. The development of new ophthalmic diagnostic methods implies appropriate knowledge concerning the mode of propagation of light in the eye. In this work, it was developed the necessary simulation tools to study the mechanisms of the interaction of optical light with the retina. To accomplish this goal it was used the Monte Carlo (MC) simulation technique.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">G. Leal</style></author><author><style face="normal" font="default" size="100%">C. Neves</style></author><author><style face="normal" font="default" size="100%">P. Vieira</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Novel Method of Measuring Autonomic Nervous System Pupil Dynamics Using Wavelet Analysis</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">This paper presents a Pupillometer that has been developed in order to detect the pupil&amp;rsquo;s variation in time in a non-invasive way. The output signal of the equipment, a Pupillogram, was analyzed using Time-Frequency Analysis with the aim of better understanding the brain signals&amp;rsquo; activity expressed in the human eye. The Autonomic Nervous System (ANS) is divided into the Sympathetic and Parasympathetic components and theoretically they are always competing with each other as a two oscillator model. The goal of this project is to demonstrate that these components can be identified and their frequency bands become more evident. It is known that the pupil contracts when the Sympathetic component of the ANS is inhibited and the pupil dilates due to the inhibition of the parasympathetic component of the ANS. Because the pupil constrictor muscle is supplied by parasympathetic fibers and the dilator by sympathetic fibers, autonomic disorders may be detected with the appliance of a light stimulus (unresponsiveness to light) or other alarm stimuli. With the present results we show that the signal from the pupil&amp;rsquo;s variation has three major frequency bands, the first being 0.04-0.08 Hz band (LF - Low Frequency), the second being 0.10-0.70 (MF &amp;ndash; Medium Frequency) and the third being 0.80 &amp;ndash; 1.2 Hz band (HF - High Frequency). The MF and HF bands showed interesting results, from which we can infer a possible representation of the ANS activity.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gomes Ricardo</style></author><author><style face="normal" font="default" size="100%">Vieira Pedro</style></author><author><style face="normal" font="default" size="100%">. Coelho  João M. P</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Optical simulation of laser beam phase-shaping focusing optimization in biological tissues</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">In this paper we report the development of an optical simulator that can be used in the development of methodologies for compensate/decrease the light scattering effect of most biological tissues through phase-shaping methods. In fact, scattering has long been a major limitation for the medical applications of lasers where in-depth tissues concerns due to the turbid nature of most biological media in the human body. In developing the simulator, two different approaches were followed: one using multiple identical beams directed to the same target area and the other using a phase-shaped beam. In the multiple identical beams approach (used mainly to illustrate the limiting effect of scattering on the beam&amp;rsquo;s propagation) there was no improvement in the beam focus at 1 mm compared to a single beam layout but, in phase-shaped beam approach, a 8x improvement on the radius of the beam at the same depth was achieved. The models were created using the optical design software Zemax and numerical algorithms created in Matlab programming language to shape the beam wavefront. A dedicated toolbox allowed communication between both programs. The use of the two software&amp;rsquo;s proves to be a simple and powerful solution combining the best of the two and allowing a significant potential for adapting the simulations to new systems and thus allow to assess their response and define critical engineering parameters prior to laboratorial implementation. &amp;copy; (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guerra, M</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Electron impact ionization cross sections of several ionization stages of Kr, Ar and Fe</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Aug 15</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1016/j.ijms.2013.02.011</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Elsevier B.V.</style></publisher><volume><style face="normal" font="default" size="100%">348</style></volume><pages><style face="normal" font="default" size="100%">1-8</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">International Journal of Mass Spectrometry, 348 (2013) 1-8. doi:10.1016/j.ijms.2013.02.011</style></abstract><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/94C342F1-4E2E-4134-B8C5-16DBF9C54A1E</style></custom3><label><style face="normal" font="default" size="100%">r34903</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guerra, M</style></author><author><style face="normal" font="default" size="100%">Amaro, P</style></author><author><style face="normal" font="default" size="100%">Szabo, C. I.</style></author><author><style face="normal" font="default" size="100%">Gumberidze, A.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Analysis of the charge state distribution in an ECRIS Ar plasma using high-resolution x-ray spectra</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Apr 01</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://stacks.iop.org/0953-4075/46/i=6/a=065701?key=crossref.5de736b6f8970e8b5fa1cb32ed06f754</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">6</style></number><volume><style face="normal" font="default" size="100%">46</style></volume><pages><style face="normal" font="default" size="100%">065701</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/8CE1D74D-C517-493E-BDEF-060EC5233A82</style></custom3><label><style face="normal" font="default" size="100%">r32365</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kasthurirangan, S</style></author><author><style face="normal" font="default" size="100%">Saha, J. K.</style></author><author><style face="normal" font="default" size="100%">Agnihotri, A. N.</style></author><author><style face="normal" font="default" size="100%">Bhattacharyya, S</style></author><author><style face="normal" font="default" size="100%">Misra, D</style></author><author><style face="normal" font="default" size="100%">Kumar, A</style></author><author><style face="normal" font="default" size="100%">Mukherjee, P K</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Costa, A. M.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author><author><style face="normal" font="default" size="100%">Mukherjee, T K</style></author><author><style face="normal" font="default" size="100%">Tribedi, L C</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Observation of 2p3 d (1Po)→ 1s3d (1De) Radiative Transition in He-like Si, S, and Cl Ions</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://prl.aps.org/abstract/PRL/v111/i24/e243201</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">111</style></volume><pages><style face="normal" font="default" size="100%">243201</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><accession-num><style face="normal" font="default" size="100%">1AA7DC3F-4D7B-4C5E-8686-FB90F2EFBF9E</style></accession-num><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/8C23392C-229B-4B0C-BC9F-DF363501A6B7</style></custom3><label><style face="normal" font="default" size="100%">r36458</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Szabo, Csilla I</style></author><author><style face="normal" font="default" size="100%">Amaro, Pedro</style></author><author><style face="normal" font="default" size="100%">Guerra, Mauro</style></author><author><style face="normal" font="default" size="100%">Schlesser, Sophie</style></author><author><style face="normal" font="default" size="100%">Gumberidze, Alexander</style></author><author><style face="normal" font="default" size="100%">Santos, Jose Paulo</style></author><author><style face="normal" font="default" size="100%">Indelicato, Paul</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">McDaniel, Floyd D</style></author><author><style face="normal" font="default" size="100%">Doyle, Barney L</style></author><author><style face="normal" font="default" size="100%">Glass, Gary A</style></author><author><style face="normal" font="default" size="100%">Wang, Yongqiang</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Reference free, high-precision measurements of transition energies in few electron argon ions</style></title><secondary-title><style face="normal" font="default" size="100%">AIP APPLICATION OF ACCELERATORS IN RESEARCH AND INDUSTRY: Twenty-Second International Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.aip.org/link/?APC/1525/68/1</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">1</style></number><publisher><style face="normal" font="default" size="100%">AIP</style></publisher><volume><style face="normal" font="default" size="100%">1525</style></volume><pages><style face="normal" font="default" size="100%">68-72</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The use of a vacuum double crystal spectrometer, coupled to an electron-cyclotron resonance ion source (ECRIS), allows to measure low-energy x-ray transitions energies in highly-charged ions with accuracies of the order of a few parts per million. We have used this installation to measure the 1s2p 1 P1 - 1s2 1 S0 diagram line and the 1s2s 3 S1 - 1s2 1 S0 forbidden M1 transition energies in helium-like argon, the 1s2s2p 2 P j  1s2 2s 2 S1/2 transitions in lithium-like argon and the 1s2s2 2p 1 P1 - 1s2 2s2 1 S0 transition in beryllium-like argon. These transition measurements have accuracies between 2 and 4 ppm depending on the line intensity. Thanks to the excellent agreement between the simulations and the measurements, we were also able to measure the transition width of all the allowed transitions. The results are compared to recent QED and relativistic many-body calculations.</style></abstract><notes><style face="normal" font="default" size="100%">journal = {AIP Conference Proceedings}</style></notes><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/A7636009-A54D-4019-ADCC-215851FB254E</style></custom3><label><style face="normal" font="default" size="100%">r32360</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guimarães, Diana</style></author><author><style face="normal" font="default" size="100%">Carvalho, Maria Luisa</style></author><author><style face="normal" font="default" size="100%">Geraldes, Vera</style></author><author><style face="normal" font="default" size="100%">Rocha, Isabel</style></author><author><style face="normal" font="default" size="100%">Alves, Luís Cerqueira</style></author><author><style face="normal" font="default" size="100%">Santos, Jose Paulo</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Lead in liver and kidney of exposed rats: Aging accumulation study.</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Oct</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S0946672X12000090</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">4</style></number><volume><style face="normal" font="default" size="100%">26</style></volume><pages><style face="normal" font="default" size="100%">285-290</style></pages><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">The concentration of lead in liver and kidneys of Wistar rats, fed with lead since fetal period in relation to their age and to a control group, was determined. A group of rats was exposed to lead acetate (n=30) in drinking water and the other group was exposed to normal water (n=20). Samples were collected from rats aging between 1 and 11 months and were analyzed by Energy Dispersive X-ray Fluorescence (EDXRF) without any chemical preparation. The EDXRF results were assessed by the PIXE (Proton Induced X-ray Emission) technique. The formaldehyde used to preserve the samples was also analyzed by ETAAS (Electro-Thermal Atomic Absorption Spectrometry) in order to verify if there was any loss of lead from the samples to the formaldehyde. We found that the loss was not significant (&amp;lt;2%). Concerning the mean values of the lead concentration measured in the contaminated soft tissues, in liver they range from 6 to 22μgg(-1), and in kidneys from 44 to 79μgg(-1). The control rats show, in general, values below the EDXRF detection limit (2μgg(-1)). The ratio kidney/liver ranges from 2 to 10 and is strongly positively correlated with the age of the animals. A Spearman correlation matrix to investigate the correlation between elemental concentrations and the dependence of these concentrations with age showed that there is a strong positive correlation with age for lead in the liver but not in the kidney. The correlation matrix showed also that the concentration of lead in these two soft tissues is not correlated. The lead accumulation in liver is made by different plateaus that strongly decrease with age. It was verified the existence of two levels of accumulation in kidney, not very highlighted, which might be indicative of a maximum accumulation level for lead in kidney.</style></abstract><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/99CCA166-1938-4858-8C04-C12C1F0701D9</style></custom3><auth-address><style face="normal" font="default" size="100%">Centro de Física Atómica, CFA, Departamento de Física, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Monte da Caparica, Portugal. Electronic address: dianafcg@gmail.com.</style></auth-address><label><style face="normal" font="default" size="100%">r11712</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Amaro, P</style></author><author><style face="normal" font="default" size="100%">Fratini, F.</style></author><author><style face="normal" font="default" size="100%">Fritzsche, S.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author><author><style face="normal" font="default" size="100%">Santos, J.</style></author><author><style face="normal" font="default" size="100%">Surzhykov, A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Parametrization of the angular correlation and degree of linear polarization in two-photon decays of hydrogenlike ions</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Oct</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.aps.org/doi/10.1103/PhysRevA.86.042509</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">4</style></number><volume><style face="normal" font="default" size="100%">86</style></volume><language><style face="normal" font="default" size="100%">English</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/7CF5A784-7D6C-4B71-A02F-85FAAD40FC0F</style></custom3><label><style face="normal" font="default" size="100%">r25554</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Safari, L</style></author><author><style face="normal" font="default" size="100%">Amaro, P</style></author><author><style face="normal" font="default" size="100%">Fritzsche, S.</style></author><author><style face="normal" font="default" size="100%">Santos, J.</style></author><author><style face="normal" font="default" size="100%">Tashenov, S</style></author><author><style face="normal" font="default" size="100%">Fratini, F.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Relativistic polarization analysis of Rayleigh scattering by atomic hydrogen</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Oct</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.aps.org/doi/10.1103/PhysRevA.86.043405</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">4</style></number><volume><style face="normal" font="default" size="100%">86</style></volume><language><style face="normal" font="default" size="100%">English</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/77891F9F-8A24-44A5-98B0-5053CE3A4F26</style></custom3><label><style face="normal" font="default" size="100%">r25555</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Costa, A. M.</style></author><author><style face="normal" font="default" size="100%">Martins, M. C.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">K X-Ray Energies and Transition Probabilities for He-, Li- and Be-like Praseodymium ions</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Nov 05</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://stacks.iop.org/1742-6596/388/i=15/a=152018?key=crossref.8265da6718a145820c69db5780fcba57</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">15</style></number><volume><style face="normal" font="default" size="100%">388</style></volume><pages><style face="normal" font="default" size="100%">152018</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/127E0725-3D16-44FB-A94E-4D29C6C2C624</style></custom3><label><style face="normal" font="default" size="100%">r25806</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Guerra, M</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">New expression for the K-shell ionization</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Nov 05</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://stacks.iop.org/1742-6596/388/i=4/a=042047?key=crossref.9990322f261af791a8aa6f1bf7557637</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">4</style></number><volume><style face="normal" font="default" size="100%">388</style></volume><pages><style face="normal" font="default" size="100%">042047</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/F51B8970-93E4-4A6A-BED1-56BAA43E66B7</style></custom3><label><style face="normal" font="default" size="100%">r25805</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Marques, J.</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author><author><style face="normal" font="default" size="100%">Costa, A.</style></author><author><style face="normal" font="default" size="100%">Martins, M</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author><author><style face="normal" font="default" size="100%">Santos, J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Decay of the 1s^{2}2s3p ^{3}P_{0} level in Be-like ions</style></title><secondary-title><style face="normal" font="default" size="100%">Phys. Rev. A</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Nov</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.aps.org/doi/10.1103/PhysRevA.86.052521</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">86</style></volume><pages><style face="normal" font="default" size="100%">052521</style></pages><language><style face="normal" font="default" size="100%">English</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/95F0E2B5-728E-4F2B-B592-3974BD4ABF42</style></custom3><label><style face="normal" font="default" size="100%">r26405</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Safari, L</style></author><author><style face="normal" font="default" size="100%">Amaro, P</style></author><author><style face="normal" font="default" size="100%">Fritzsche, S.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Fratini, F.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Relativistic total cross section and angular distribution for Rayleigh scattering by atomic hydrogen</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">May</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.aps.org/doi/10.1103/PhysRevA.85.043406</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">4</style></number><volume><style face="normal" font="default" size="100%">85</style></volume><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">We study the total cross section and angular distribution in Rayleigh scattering by hydrogen atom in the ground state, within the framework of Dirac relativistic equation and second-order perturbation theory. The relativistic states used for the calculations are obtained by making use of the finite basis-set method and expressed in terms of B splines and B polynomials. We pay particular attention to the effects that arise from higher (nondipole) terms in the expansion of the electron-photon interaction. It is shown that the angular distribution of scattered photons, while symmetric with respect to the scattering angle θ=90∘ within the electric dipole approximation, becomes asymmetric when higher multipoles are taken into account. The analytical expression of the angular distribution is parametrized in terms of Legendre polynomials. Detailed calculations are performed for photons in the energy range 0.5 to 10 keV. When possible, results are compared with previous calculations.</style></abstract><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/B7A57D9B-2B5C-48B5-B1CE-CE5321B567D4</style></custom3><label><style face="normal" font="default" size="100%">r14578</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Amaro, Pedro</style></author><author><style face="normal" font="default" size="100%">Schlesser, Sophie</style></author><author><style face="normal" font="default" size="100%">Guerra, Mauro</style></author><author><style face="normal" font="default" size="100%">Le Bigot, Eric-Olivier</style></author><author><style face="normal" font="default" size="100%">Isac, Jean-Michel</style></author><author><style face="normal" font="default" size="100%">Travers, Pascal</style></author><author><style face="normal" font="default" size="100%">Santos, José</style></author><author><style face="normal" font="default" size="100%">Szabo, Csilla</style></author><author><style face="normal" font="default" size="100%">Gumberidze, Alexandre</style></author><author><style face="normal" font="default" size="100%">Indelicato, Paul</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Absolute Measurement of the Relativistic Magnetic Dipole Transition Energy in Heliumlike Argon</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jul</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.aps.org/doi/10.1103/PhysRevLett.109.043005</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">4</style></number><volume><style face="normal" font="default" size="100%">109</style></volume><pages><style face="normal" font="default" size="100%">043005</style></pages><language><style face="normal" font="default" size="100%">English</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/3461DA49-DACB-4B32-95F6-06F5B7AA4DC2</style></custom3><label><style face="normal" font="default" size="100%">r22493</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Lucena R</style></author><author><style face="normal" font="default" size="100%">Quaresma C</style></author><author><style face="normal" font="default" size="100%">Jesus A</style></author><author><style face="normal" font="default" size="100%">Vieira P</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">INTELLIGENT CHAIR SENSOR-ACTUATOR A Novel Sensor Type for Seated Posture Detection and Correction</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">In order to build an intelligent chair capable of posture guidance and correction we propose a new sensor/actuator pressure cell capable of measuring applied pressure and conformation change, which will allow posture evaluation, guidance and correction. We developed and applied the pressure cells to the seat pad of an office chair to test if both the cells and their placement were suitable for pressure map reconstruction. When tested for 10 different postures, the results showed distinguishable pressure maps for each posture, making the pressure cells suitable for pressure map reconstruction and posture evaluation. This paper also presents a briefly description of our vision and goals for the intelligent chair project.</style></abstract><notes><style face="normal" font="default" size="100%">International Conference on Biomedical Electronics and Devices (BIODEVICES), PORTUGAL, FEB 01-04, 2012</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Neves R</style></author><author><style face="normal" font="default" size="100%">Schwartz J</style></author><author><style face="normal" font="default" size="100%">Silva J</style></author><author><style face="normal" font="default" size="100%">Teodoro V</style></author><author><style face="normal" font="default" size="100%">Vieira P</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Learning introductory physics with computational modelling and interactive environments</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">For the modern physics research community there is no doubt that the development of physics knowledge and cognition involves modelling processes that balance different elements of theory, experimentation and scientific computation. However, the majority of the current introductory physics curricula and learning environments for science, technology, engineering and mathematics education do not always reflect this range of epistemological characteristics. Changing this situation requires introductory physics curricula and learning environments structured around pedagogical methodologies inspired in the modelling cycles of physics research, to help students create and explore balanced learning paths that go through the different cognitive stages associated with the modelling processes involved in the development of physics knowledge and cognition. In this paper we present an approach to this problem that is based on the development of interactive engagement learning activities built around exploratory and expressive computational modelling experiments implemented in the Modellus environment. We illustrate with activities implemented in the general physics and biophysics courses of the biomedical and informatics engineering majors at FCT/UNL. We report on student receptivity to our modelling approach and discuss its effect on the learning process.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Leal G</style></author><author><style face="normal" font="default" size="100%">Neves C</style></author><author><style face="normal" font="default" size="100%">Vieira PM</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Pupillometry: Development of Equipment for Studies of Autonomic Nervous System</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">372</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This paper presents the results of the development of an equipment for measuring pupil size variation. A Pupillometer has been developed in order to detect the pupil's variation in time in a non-invasive way. The output signal of the equipment expresses the pupil's features variation in time (area, perimeter, vertical diameter, horizontal diameter). The Autonomic Nervous System (ANS) is divided into the Sympathetic and Parasympathetic components and theoretically they are always competing with each other as a two oscillator model. The aim of this project is to identify these components and their frequency bands. With the present results we show that the signal from the pupil's variation has two major frequency bands, the first being the 0-1 Hz band (LF - Low Frequency) and the second being 1-2Hz band (HF - High Frequency). From the literature we know that the Sympathetic Nervous System (SNS) behaves in a lower frequency than the Parasympathetic (PSNS) one. This means that SNS oscillates in the LF band and PSNS oscillates in the HF band.</style></abstract><notes><style face="normal" font="default" size="100%">3rd IFIP/SOCOLNET Doctoral Conference on Computing, Electrical and Industrial Systems, Costa de Caparica, PORTUGAL, FEB 27-29, 2012</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mora AD</style></author><author><style face="normal" font="default" size="100%">Fonseca JM</style></author><author><style face="normal" font="default" size="100%">Vieira PM</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Variability and Repeatability Tests of ARMD Assessment Using the AD3RI Tool</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">372</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Age-related macular degeneration (ARMD) is a common disease in the elderly and is currently the main cause of blindness in developed countries. Drusen are one of its risks factors, which are visible in a retinal examination. Its quantitative analysis is important in the follow up of the ARMD. The authors have previously developed two tools for semi-automatic and automatic drusen quantification. In this paper five tests performed on these tools are presented and discussed in order to evaluate their accuracy, variability and repeatability. The statistical results show that the automatic tool is as accurate as the experts in Drusen quantification, with the advantage of being a reproducible method. The semi-automatic quantification method, which was used by the experts for Drusen quantification, proved statistically to produce a high intra-observer agreement.</style></abstract><notes><style face="normal" font="default" size="100%">3rd IFIP/SOCOLNET Doctoral Conference on Computing, Electrical and Industrial Systems, Costa de Caparica, PORTUGAL, FEB 27-29, 2012</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Costa, A. M.</style></author><author><style face="normal" font="default" size="100%">Martins, M. C.</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling praseodymium K X-ray lines in an electron beam ion trap</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Aug 16</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.springerlink.com/index/10.1140/epjd/e2012-30049-9</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">8</style></number><volume><style face="normal" font="default" size="100%">66</style></volume><pages><style face="normal" font="default" size="100%">202</style></pages><language><style face="normal" font="default" size="100%">English</style></language><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/E9699861-40B4-4483-A79A-B5EB430D1A02</style></custom3><label><style face="normal" font="default" size="100%">r22492</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guimarães, D.</style></author><author><style face="normal" font="default" size="100%">Carvalho, M. L.</style></author><author><style face="normal" font="default" size="100%">M. Becker</style></author><author><style face="normal" font="default" size="100%">A. von Bohlen</style></author><author><style face="normal" font="default" size="100%">Geraldes, V.</style></author><author><style face="normal" font="default" size="100%">Rocha, I.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Lead concentration in feces and urine of exposed rats by x-ray fluorescence and electrothermal atomic absorption spectrometry</style></title><secondary-title><style face="normal" font="default" size="100%">Lead concentration in feces and urine of exposed rats by XRF and ETAAS</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1002/xrs.2361</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">2</style></number><publisher><style face="normal" font="default" size="100%">John Wiley &amp;amp; Sons, Ltd</style></publisher><volume><style face="normal" font="default" size="100%">41</style></volume><pages><style face="normal" font="default" size="100%">80-86</style></pages><language><style face="normal" font="default" size="100%">English</style></language><notes><style face="normal" font="default" size="100%">JPS-Ref53</style></notes><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/39F8A5B9-9810-45B6-B9D6-85232327C341</style></custom3><label><style face="normal" font="default" size="100%">r12160</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">M. L. Palma</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Nuclear spin–spin constants, rotational g factor and susceptibility of sulphur hexafluoride</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.tandfonline.com/doi/abs/10.1080/00268976.2012.668224</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">110</style></volume><pages><style face="normal" font="default" size="100%">2163</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">doi: 10.1080/00268976.2012.668224

JPS-Ref57</style></notes><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/38691246-ED1B-4ABB-AB1D-8D29D0218F54</style></custom3><label><style face="normal" font="default" size="100%">r11775</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guimarães, D.</style></author><author><style face="normal" font="default" size="100%">Carvalho, M. L.</style></author><author><style face="normal" font="default" size="100%">Geraldes, V.</style></author><author><style face="normal" font="default" size="100%">Rocha, I.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Study of lead accumulation in bones of Wistar rats by X-ray fluorescence analysis: aging effect</style></title><secondary-title><style face="normal" font="default" size="100%">Metallomics</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1039/c1mt00149c</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">The Royal Society of Chemistry</style></publisher><volume><style face="normal" font="default" size="100%">4</style></volume><pages><style face="normal" font="default" size="100%">66-71</style></pages><isbn><style face="normal" font="default" size="100%">1756-5901</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The accumulation of lead in several bones of Wistar rats with time was determined and comparedQ3 for the different types of bones. Two groups were studied: a control group (n = 20), not exposedto lead and a contaminated group (n = 30), exposed to lead from birth, first indirectly throughmother’s milk, and then directly through a diet containing lead acetate in drinking water (0.2%).Rats age ranged from 1 to 11 months, with approximately 1 month intervals and each of thecollections had 3 contaminated rats and 2 control rats. Iliac, femur, tibia–fibula and skull havebeen analysed by energy dispersive X-ray fluorescence technique (EDXRF). Samples offormaldehyde used to preserve the bone tissues were also analysed by Electrothermal AtomicAbsorption (ETAAS), showing that there was no significant loss of lead from the tissue to thepreservative. The bones mean lead concentration of exposed rats range from 100 to 300 mg g 1while control rats never exceeded 10 mg g 1. Mean bone lead concentrations were compared andthe concentrations were higher in iliac, femur and tibia–fibula and after that skull. However, ofall the concentrations in the different collections, only those in the skull were statisticallyQ4 significantly different (p o 0.05) from the other types of bones. Analysis of a radar chart alsoallowed us to say that these differences tend to diminish with age. The Spearman correlation testapplied to mean lead concentrations showed strong and very strong positive correlations betweenall different types of bones. This test also showed that mean lead concentrations in bones arenegatively correlated with the age of the animals. This correlation is strong in iliac and femur andvery strong in tibia–fibula and skull. It was also shown that the decrease of lead accumulationwith age is made by three plateaus of accumulation,</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guimarães, D.</style></author><author><style face="normal" font="default" size="100%">Carvalho, M. L.</style></author><author><style face="normal" font="default" size="100%">Geraldes, V.</style></author><author><style face="normal" font="default" size="100%">Rocha, I.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Study of lead accumulation in bones of Wistar rats by X-ray fluorescence analysis: aging effect</style></title><secondary-title><style face="normal" font="default" size="100%">Metallomics</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1039/c1mt00149c</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">The Royal Society of Chemistry</style></publisher><volume><style face="normal" font="default" size="100%">4</style></volume><pages><style face="normal" font="default" size="100%">66-71</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The accumulation of lead in several bones of Wistar rats with time was determined and compared
Q3 for the different types of bones. Two groups were studied: a control group (n = 20), not exposed
to lead and a contaminated group (n = 30), exposed to lead from birth, first indirectly through
mother’s milk, and then directly through a diet containing lead acetate in drinking water (0.2%).
Rats age ranged from 1 to 11 months, with approximately 1 month intervals and each of the
collections had 3 contaminated rats and 2 control rats. Iliac, femur, tibia–fibula and skull have
been analysed by energy dispersive X-ray fluorescence technique (EDXRF). Samples of
formaldehyde used to preserve the bone tissues were also analysed by Electrothermal Atomic
Absorption (ETAAS), showing that there was no significant loss of lead from the tissue to the
preservative. The bones mean lead concentration of exposed rats range from 100 to 300 mg g 1
while control rats never exceeded 10 mg g 1. Mean bone lead concentrations were compared and
the concentrations were higher in iliac, femur and tibia–fibula and after that skull. However, of
all the concentrations in the different collections, only those in the skull were statistically
Q4 significantly different (p o 0.05) from the other types of bones. Analysis of a radar chart also
allowed us to say that these differences tend to diminish with age. The Spearman correlation test
applied to mean lead concentrations showed strong and very strong positive correlations between
all different types of bones. This test also showed that mean lead concentrations in bones are
negatively correlated with the age of the animals. This correlation is strong in iliac and femur and
very strong in tibia–fibula and skull. It was also shown that the decrease of lead accumulation
with age is made by three plateaus of accumulation,</style></abstract><notes><style face="normal" font="default" size="100%">JPS-Ref51</style></notes><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/0D26C694-FCE2-47D1-B63D-1D17AA42B179</style></custom3><label><style face="normal" font="default" size="100%">r05534</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pinto, R. M.</style></author><author><style face="normal" font="default" size="100%">Dias, A. A.</style></author><author><style face="normal" font="default" size="100%">Coreno, M.</style></author><author><style face="normal" font="default" size="100%">de Simone, M.</style></author><author><style face="normal" font="default" size="100%">Giuliano, B. M.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Costa, M. L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tautomerism in 5-aminotetrazole investigated by core-level photoelectron spectroscopy and ΔSCF calculations</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Electron Spectroscopy and Related Phenomena</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S0368204811001356</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">1–2</style></number><volume><style face="normal" font="default" size="100%">185</style></volume><pages><style face="normal" font="default" size="100%">13-17</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The C 1s and N 1s photoelectron spectra of gas-phase 5-aminotetrazole (5ATZ) were recorded using synchrotron radiation, with the aim of evaluating 1H/2H tautomer population ratios. The core-electron binding energies (CEBEs) were estimated from computational results, using the delta self-consistent-field (ŒîSCF) approach. Simulated spectra were generated using these CEBEs and the results from Gaussian-n (Gn, n=1, 2 and 3) and Complete Basis Set (CBS-4M and CBS-Q) methods. Results reveal the almost exclusive predominance of the 2H-tautomer, with a 1H/2H ratio of ca. 0.12/0.88, taken from a gross analysis of the XPS C 1s spectrum, recorded at 365 K.</style></abstract><notes><style face="normal" font="default" size="100%">JPS-Ref54</style></notes><custom3><style face="normal" font="default" size="100%">papers2://publication/uuid/5D8EAACA-FD65-47F8-9812-18A09A53D371</style></custom3><label><style face="normal" font="default" size="100%">r05519</style></label></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mora AD</style></author><author><style face="normal" font="default" size="100%">Vieira PM</style></author><author><style face="normal" font="default" size="100%">Manivannan A</style></author><author><style face="normal" font="default" size="100%">Fonseca JM</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Automated drusen detection in retinal images using analytical modelling algorithms</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">degeneration</style></keyword><keyword><style  face="normal" font="default" size="100%">Drusen</style></keyword><keyword><style  face="normal" font="default" size="100%">fundus</style></keyword><keyword><style  face="normal" font="default" size="100%">macular</style></keyword><keyword><style  face="normal" font="default" size="100%">maculopathy</style></keyword><keyword><style  face="normal" font="default" size="100%">photographs</style></keyword><keyword><style  face="normal" font="default" size="100%">quantification</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">10</style></volume><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">Background: Drusen are common features in the ageing macula associated with exudative Age-Related Macular Degeneration (ARMD). They are visible in retinal images and their quantitative analysis is important in the follow up of the ARMD. However, their evaluation is fastidious and difficult to reproduce when performed manually. Methods: This article proposes a methodology for Automatic Drusen Deposits Detection and quantification in Retinal Images (AD3RI) by using digital image processing techniques. It includes an image pre-processing method to correct the uneven illumination and to normalize the intensity contrast with smoothing splines. The drusen detection uses a gradient based segmentation algorithm that isolates drusen and provides basic drusen characterization to the modelling stage. The detected drusen are then fitted by Modified Gaussian functions, producing a model of the image that is used to evaluate the affected area. Twenty two images were graded by eight experts, with the aid of a custom made software and compared with AD3RI. This comparison was based both on the total area and on the pixel-to-pixel analysis. The coefficient of variation, the intraclass correlation coefficient, the sensitivity, the specificity and the kappa coefficient were calculated. Results: The ground truth used in this study was the experts' average grading. In order to evaluate the proposed methodology three indicators were defined: AD3RI compared to the ground truth (A2G); each expert compared to the other experts (E2E) and a standard Global Threshold method compared to the ground truth (T2G). The results obtained for the three indicators, A2G, E2E and T2G, were: coefficient of variation 28.8 %, 22.5 % and 41.1 %, intraclass correlation coefficient 0.92, 0.88 and 0.67, sensitivity 0.68, 0.67 and 0.74, specificity 0.96, 0.97 and 0.94, and kappa coefficient 0.58, 0.60 and 0.49, respectively. Conclusions: The gradings produced by AD3RI obtained an agreement with the ground truth similar to the experts (with a higher reproducibility) and significantly better than the Threshold Method. Despite the higher sensitivity of the Threshold method, explained by its over segmentation bias, it has lower specificity and lower kappa coefficient. Therefore, it can be concluded that AD3RI accurately quantifies drusen, using a reproducible method with benefits for ARMD evaluation and follow-up.</style></abstract><auth-address><style face="normal" font="default" size="100%">Univ Aberdeen, Univ Nova Lisboa, NHS Grampian, Univ Nova Lisboa, Univ Nova Lisboa, Univ Nova Lisboa</style></auth-address></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Jordao A</style></author><author><style face="normal" font="default" size="100%">Duque P</style></author><author><style face="normal" font="default" size="100%">Quaresma C</style></author><author><style face="normal" font="default" size="100%">Vieira P</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">DEVELOPMENT OF VERTEBRAL METRICS An Instrument to Study the Vertebral Column</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Biomechanical;</style></keyword><keyword><style  face="normal" font="default" size="100%">Evaluation;</style></keyword><keyword><style  face="normal" font="default" size="100%">image</style></keyword><keyword><style  face="normal" font="default" size="100%">instrument;</style></keyword><keyword><style  face="normal" font="default" size="100%">Non-invasive</style></keyword><keyword><style  face="normal" font="default" size="100%">position</style></keyword><keyword><style  face="normal" font="default" size="100%">processing;</style></keyword><keyword><style  face="normal" font="default" size="100%">Spine;</style></keyword><keyword><style  face="normal" font="default" size="100%">Standing</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fonseca M</style></author><author><style face="normal" font="default" size="100%">Luis H</style></author><author><style face="normal" font="default" size="100%">Franco N</style></author><author><style face="normal" font="default" size="100%">Reis MA</style></author><author><style face="normal" font="default" size="100%">Chaves PC</style></author><author><style face="normal" font="default" size="100%">Taborda A</style></author><author><style face="normal" font="default" size="100%">Cruz J</style></author><author><style face="normal" font="default" size="100%">Galaviz D</style></author><author><style face="normal" font="default" size="100%">Fernandes N</style></author><author><style face="normal" font="default" size="100%">Vieira P</style></author><author><style face="normal" font="default" size="100%">Ribeiro JP</style></author><author><style face="normal" font="default" size="100%">Jesus AP</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Golden glazes analysis by PIGE and PIXE techniques</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">analysis;</style></keyword><keyword><style  face="normal" font="default" size="100%">Optical</style></keyword><keyword><style  face="normal" font="default" size="100%">PIGE;</style></keyword><keyword><style  face="normal" font="default" size="100%">PIXE;</style></keyword><keyword><style  face="normal" font="default" size="100%">Quantitative</style></keyword><keyword><style  face="normal" font="default" size="100%">reflection</style></keyword><keyword><style  face="normal" font="default" size="100%">samples</style></keyword><keyword><style  face="normal" font="default" size="100%">spectroscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">thick</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">269</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We present the analysis performed on the chemical composition of two golden glazes available in the market using the PIGE and PIXE techniques at the ITN ion beam laboratory. The analysis of the light elements was performed using the Emitted Radiation Yield Analysis (ERYA) code, a standard-free method for PIGE analysis on thick samples. The results were compared to those obtained on an old glaze. Consistently high concentrations of lead and sodium were found in all analyzed golden glazes. The analysis of the samples pointed to Mo and Co as the specific elements responsible of the gold colour at the desired temperature, and allowed Portuguese ceramists to produce a golden glaze at . Optical reflection spectra of the glazes are given, showing that the produced glaze has a spectrum similar to the old glaze. Also, in order to help the ceramists, the unknown compositions of four different types of frits (one of the components of glazes) were analysed.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">M. Fonseca</style></author><author><style face="normal" font="default" size="100%">H. Luís</style></author><author><style face="normal" font="default" size="100%">N. Franco</style></author><author><style face="normal" font="default" size="100%">M.A. Reis</style></author><author><style face="normal" font="default" size="100%">P.C. Chaves</style></author><author><style face="normal" font="default" size="100%">A. Taborda</style></author><author><style face="normal" font="default" size="100%">J. Cruz</style></author><author><style face="normal" font="default" size="100%">D. Galaviz</style></author><author><style face="normal" font="default" size="100%">N. Fernandes</style></author><author><style face="normal" font="default" size="100%">P. Vieira</style></author><author><style face="normal" font="default" size="100%">J.P. Ribeiro</style></author><author><style face="normal" font="default" size="100%">A. P. Jesus</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Golden glazes analysis by PIGE and PIXE techniques</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">analysis;</style></keyword><keyword><style  face="normal" font="default" size="100%">Optical</style></keyword><keyword><style  face="normal" font="default" size="100%">PIGE;</style></keyword><keyword><style  face="normal" font="default" size="100%">PIXE;</style></keyword><keyword><style  face="normal" font="default" size="100%">Quantitative</style></keyword><keyword><style  face="normal" font="default" size="100%">reflection</style></keyword><keyword><style  face="normal" font="default" size="100%">samples</style></keyword><keyword><style  face="normal" font="default" size="100%">spectroscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">thick</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">269</style></volume><language><style face="normal" font="default" size="100%">English</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Neves R</style></author><author><style face="normal" font="default" size="100%">Schwartz J</style></author><author><style face="normal" font="default" size="100%">Silva J</style></author><author><style face="normal" font="default" size="100%">Teodoro V</style></author><author><style face="normal" font="default" size="100%">Vieira P</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Learning Introductory Physics with Computational Modelling and Interactive Environments</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">n/a</style></volume><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">For the modern physics research community there is no doubt that the development of knowledge and cognition in physics involves modelling processes that balance different elements of theory, experimentation and scientific computation. However, the majority of the current introductory physics curricula and learning environments for STEM education do not always reflect this range of epistemological characteristics. Changing this situation requires introductory physics curricula and learning environments structured around pedagogical methodologies inspired in the modelling cycles of physics research, to help students create and explore balanced learning paths that go through the different cognitive stages associated with the modelling processes involved in the development of knowledge and cognition in physics. This expectation is supported by the results of many research efforts (see, e.g., [1, 2]), which have shown that the learning processes in diverse STEM areas can effectively be enhanced when students are embedded in atmospheres with activities that approximately recreate the cognitive involvement of scientists in modelling research activities. In this paper we present a strategy to approach this problem that is based on the development of interactive engagement learning activities built around exploratory and expressive computational modelling experiments implemented in the Modellus environment [3, 4]. The activities are conceived to help students going through the research inspired modelling cycle stages: meaningful qualitative contextual description, construction of mathematical physics models, model exploration, interpretation and validation, communication of results and enhancing generalizations. We describe a set of computational modelling activities implemented at FCT/UNL in the general physics and biophysics courses of the biomedical engineering and computer science majors. We report on the student's receptivity to our modelling approach and discuss its effect on the learning process.
References
[1] McDermott, L., &amp;amp; Redish, E. (1999). Resource Letter: PER-1: Physics Education Research. American Journal of Physics, 67, 755-767. [2] Slooten, O., van den Berg, E., &amp;amp; Ellermeijer, T. (Eds.) (2006). Proceedings of the International Group on Research on Physics Education (GIREP) 2006 conference: modelling in physics and physics education. Amsterdam, Holland: European Physical Society. [3] Neves, R., &amp;amp; Teodoro, V. (2010). Enhancing Science and Mathematics Education with Computational Modelling. Journal of Mathematical Modelling and Application, 1 (2), 2-15.[4] Teodoro, V., &amp;amp; Neves, R. (2011). Mathematical Modelling in Science and Mathematics Education. Computer Physics Communications, 182, 8-10.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">No authors listed</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Lissajous scanning pattern simulation, for development of a FLO</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1201/b11330-31</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">CRC Press</style></publisher><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">doi:10.1201/b11330-31</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">No authors listed</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Wavelet analysis of the pupil?s autonomic flow</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1201/b11330-56</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">CRC Press</style></publisher><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">doi:10.1201/b11330-56</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Assis, Ana C.</style></author><author><style face="normal" font="default" size="100%">Couto, Narciso</style></author><author><style face="normal" font="default" size="100%">Duarte, M. Filomena</style></author><author><style face="normal" font="default" size="100%">Rodrigues, Paula</style></author><author><style face="normal" font="default" size="100%">Barros, M. Teresa</style></author><author><style face="normal" font="default" size="100%">Costa, M. Lourdes</style></author><author><style face="normal" font="default" size="100%">Cabral, Benedito J. C.</style></author><author><style face="normal" font="default" size="100%">Fernandez, M. Tereza</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Azidoacetone as a complexing agent of transition metals Ni2+/Co2+ promoted dissociation of the C-C bond in azidoacetone</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Mass Spectrometry</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">azidoacetone complexes</style></keyword><keyword><style  face="normal" font="default" size="100%">C-C metal insertion</style></keyword><keyword><style  face="normal" font="default" size="100%">DFT calculations</style></keyword><keyword><style  face="normal" font="default" size="100%">electrospray ionization</style></keyword><keyword><style  face="normal" font="default" size="100%">tandem mass spectrometry</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1002/jms.1940</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">7</style></number><publisher><style face="normal" font="default" size="100%">John Wiley &amp; Sons, Ltd.</style></publisher><volume><style face="normal" font="default" size="100%">46</style></volume><pages><style face="normal" font="default" size="100%">696-704</style></pages><isbn><style face="normal" font="default" size="100%">1096-9888</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The relevance of metal interactions with azides has led us to the study of the complexation of some transition metals, nickel and cobalt, by azidoacetone by means of electrospray ionization mass spectrometry (ESI-MS). Complexes were obtained from solutions of NiCl2 and CoCl2, in methanol/water. Nickel was electrosprayed with other counter ion, bromide (Br), as well as other solvent (ethanol/water). For nickel and cobalt, the complexes detected were single positively charged, with various stoichiometries, some resulted from the fragmentation of the ligand, the loss of N2 being quite common. The most abundant species were [Ni(II)Az2X]+ where X = Cl, Br and Az = azidoacetone. Some of the complexes showed solvation with the solvent components. Metal reduction was observed in complexes where a radical was lost, resulting from the homolytic cleavage of a metal coordination bond. Collision-induced dissociation (CID) experiments followed by tandem mass spectrometry (MS-MS) analysis were not absolutely conclusive about the coordination site. However, terminal ions of the fragmentation routes were explained by a gas-phase mechanism proposed where a CC bond was activated and the metal inserted subsequently. Density functional theory calculations provided structures for some complexes. In [Ni(II)Az2X]+ species, one azidoacetone ligand is monodentate and the dominant binding location is the alkylated nitrogen and not the carbonyl group. The other azidoacetone ligand is bidentate showing coordination through alkylated nitrogen and the carbonyl group. These are also the preferential binding sites for the most stable isomer of [Ni(II)AzX]+ species. Copyright © 2011 John Wiley &amp; Sons, Ltd.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pinto, R. M.</style></author><author><style face="normal" font="default" size="100%">Dias, A. A.</style></author><author><style face="normal" font="default" size="100%">Costa, M. L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Electronic structure and thermal decomposition of 5-methyltetrazole studied by UV photoelectron spectroscopy and theoretical calculations</style></title><secondary-title><style face="normal" font="default" size="100%">Chemical Physics</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">5-methyltetrazole</style></keyword><keyword><style  face="normal" font="default" size="100%">Photoelectron spectroscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">Thermal decomposition</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S0301010411003922</style></url></web-urls></urls><pages><style face="normal" font="default" size="100%">DOI: 10.1016/j.chemphys.2011.09.001</style></pages><isbn><style face="normal" font="default" size="100%">0301-0104</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The electronic properties and thermal decomposition of 5-methyltetrazole (5MTZ) are investigated using UV photoelectron spectroscopy (UVPES) and theoretical calculations. Simulated spectra of both 1H- and 2H-5MTZ, based on electron propagator methods, are produced in order to study the relative tautomer population. The thermal decomposition results are rationalized in terms of G2(MP2) results. 5MTZ yields a HOMO ionization energy of 10.82 ¬± 0.04 eV and the gas-phase 5MTZ assumes predominantly the 2H-form. Its gas-phase thermal decomposition starts at ca. 195 ¬∞C and leads to the formation of N2, CH3CN and HCN. N2 is formed from two competing routes, involving 150.2 and 126.2 kJ/mol energy barriers, from 2H- and 1H-5MTZ, respectively. CH3CN is formed also from two competing pathways, requiring activation energies of 218.3 (2H-5MTZ) and 198.6 kJ/mol (1H-5MTZ). Conclusions are also drawn in order to explain the formation of HCN from secondary reactions in the thermal decomposition process.</style></abstract><notes><style face="normal" font="default" size="100%">Webpage CFA-FCTUNL só DOI</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Amaro, P</style></author><author><style face="normal" font="default" size="100%">Surzhykov, A.</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Calculation of two-photon decay rates of hydrogen-like ions by using B-polynomials</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Physics A: Mathematical and Theoretical</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://stacks.iop.org/1751-8121/44/i=24/a=245302</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">24</style></number><volume><style face="normal" font="default" size="100%">44</style></volume><pages><style face="normal" font="default" size="100%">245302</style></pages><isbn><style face="normal" font="default" size="100%">1751-8121</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">A new approach is laid out to investigate two-photon atomic transitions. It is based on the application of the finite-basis solutions constructed from the Bernstein polynomial (B-polynomial) sets. We show that such an approach provides a very promising route for the relativistic second-order (and even higher-order) calculations since it allows for analytical evaluation of the involved matrices elements. In order to illustrate possible applications of the method and to verify its accuracy, detailed calculations are performed for the 2 s 1/2 ‚Üí 1 s 1/2 transition in neutral hydrogen and hydrogen-like ions, which are compared with the theoretical predictions based on the well-established B-spline basis-set approach.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pinto, R. M.</style></author><author><style face="normal" font="default" size="100%">Dias, A. A.</style></author><author><style face="normal" font="default" size="100%">Costa, M. L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Electronic structure and thermal decomposition of 5-aminotetrazole studied by UV photoelectron spectroscopy and theoretical calculations</style></title><secondary-title><style face="normal" font="default" size="100%">Chemical Physics</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">5-aminotetrazole</style></keyword><keyword><style  face="normal" font="default" size="100%">IRC calculations</style></keyword><keyword><style  face="normal" font="default" size="100%">Photoelectron spectroscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">Thermal decomposition</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/B6TFM-520M218-1/2/2dd807b62d61acdeeb4ade8c38a184ee</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">1-3</style></number><volume><style face="normal" font="default" size="100%">381</style></volume><pages><style face="normal" font="default" size="100%">49-58</style></pages><isbn><style face="normal" font="default" size="100%">0301-0104</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The electronic properties and thermal decomposition of 5-aminotetrazole (5ATZ) are investigated using UV photoelectron spectroscopy (UVPES) and theoretical calculations. Simulated spectra of both 1H- and 2H-5ATZ, based on electron propagator methods, are produced in order to study the relative gas-phase tautomer population. The thermal decomposition results are rationalized in terms of intrinsic reaction coordinate (IRC) calculations. 5ATZ yields a HOMO ionization energy of 9.44†±†0.04†eV and the gas-phase 5ATZ assumes mainly the 2H-form. The thermal decomposition of 5ATZ leads to the formation of N2, HN3 and NH2CN as the primary products, and HCN from the decomposition of a intermediate CH3N3 compound. The reaction barriers for the formation of HN3 and N2 from 2H-5ATZ are predicted to be [approximate]228 and [approximate]150†kJ/mol, at the G2(MP2) level, respectively. The formation of HCN and HNNH from the thermal decomposition of a CH3N3 carbene intermediate is also investigated.</style></abstract><work-type><style face="normal" font="default" size="100%">doi: DOI: 10.1016/j.chemphys.2011.01.008</style></work-type></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guimarães, D.</style></author><author><style face="normal" font="default" size="100%">Carvalho, M. L.</style></author><author><style face="normal" font="default" size="100%">M. Becker</style></author><author><style face="normal" font="default" size="100%">A. von Bohlen</style></author><author><style face="normal" font="default" size="100%">Geraldes, V.</style></author><author><style face="normal" font="default" size="100%">Rocha, I.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Lead concentration in feces and urine of exposed rats by X-ray Fluorescence and Electrothermal Atomic Absorption Spectrometry</style></title><secondary-title><style face="normal" font="default" size="100%">X-Ray Spectrometry</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><volume><style face="normal" font="default" size="100%">In press</style></volume><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guerra, M</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modified binary encounter Bethe model for electron-impact ionization</style></title><secondary-title><style face="normal" font="default" size="100%">International Journal of Mass Spectrometry</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Electron Impact, Cross sections, K-shell, L-shell, M-shell</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><volume><style face="normal" font="default" size="100%">Accepted</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Theoretical expressions for ionization cross sections by electron impact based on the binary encounter Bethe (BEB) model, valid from ionization threshold up to relativistic energies, are proposed.The new modified BEB (MBEB) and its relativistic counterpart (MRBEB) expressions are simpler than the BEB (nonrelativistic and relativistic) expressions because they require only one atomic parameter, namely the binding energy of the electrons to be ionized, and use only one scaling term for the ionization of all sub-shells.The new models are used to calculate the K-, L- and M-shell ionization cross sections by electron impact for several atoms with Z from 6 to 83.Comparisons with all, to the best of our knowledge, available experimental data show that this model is as good or better than other models, with less complexity.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Martins, M. C.</style></author><author><style face="normal" font="default" size="100%">Costa, A. M.</style></author><author><style face="normal" font="default" size="100%">Marques, J. P.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Production and decay of chlorine ion excited species in an electron cyclotron resonance ion source plasma</style></title><secondary-title><style face="normal" font="default" size="100%">Physica Scripta</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://stacks.iop.org/1402-4896/2011/i=T144/a=014005</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">T144</style></volume><pages><style face="normal" font="default" size="100%">014005</style></pages><isbn><style face="normal" font="default" size="100%">1402-4896</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The most important processes for the creation of chlorine ion excited states from the ground configurations of Cl 10+ to Cl 15+ ions in an electron cyclotron resonance ion source, leading to the emission of K x-ray lines, were studied. Theoretical values for inner-shell excitation and ionization cross-sections, including double KL and triple KLL ionization, transition probabilities and energies for the de-excitation processes, were calculated in the framework of the multi-configuration Dirac‚ÄìFock method. With reasonable assumptions about the electron energy distribution, a theoretical KŒ± x-ray spectrum was obtained, which was then compared with recent experimental data.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Santos, J.</style></author><author><style face="normal" font="default" size="100%">Costa, A.</style></author><author><style face="normal" font="default" size="100%">Madruga, C.</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Relativistic transition wavelenghts and probabilities for spectral lines of Ne II</style></title><secondary-title><style face="normal" font="default" size="100%">The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Physics and Astronomy</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1140/epjd/e2011-10715-2</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">1</style></number><publisher><style face="normal" font="default" size="100%">Springer Berlin / Heidelberg</style></publisher><volume><style face="normal" font="default" size="100%">63</style></volume><pages><style face="normal" font="default" size="100%">89-96</style></pages><isbn><style face="normal" font="default" size="100%">1434-6060</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Transition wavelengths and probabilities for several 2 p 4 3 p -2 p 4 3 s and 2 p 4 3 d -2 p 4 3 p lines in fluorine-like neon ion (NeII) have been calculated within the multiconfiguration Dirac-Fock (MCDF) method with quantum electrodynamics (QED) corrections. The results are compared with all existing experimental and theoretical data.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pinto, R. M.</style></author><author><style face="normal" font="default" size="100%">Dias, A. A.</style></author><author><style face="normal" font="default" size="100%">Coreno, M.</style></author><author><style face="normal" font="default" size="100%">de Simone, M.</style></author><author><style face="normal" font="default" size="100%">Giuliano, B. M.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Costa, M. L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tautomerism in 5-aminotetrazole investigated by core-level photoelectron spectroscopy and ΔSCF calculations</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Electron Spectroscopy and Related Phenomena</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">5-aminotetrazole</style></keyword><keyword><style  face="normal" font="default" size="100%">synchrotron</style></keyword><keyword><style  face="normal" font="default" size="100%">Tautomerism</style></keyword><keyword><style  face="normal" font="default" size="100%">XPS</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S0368204811001356</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">In Press</style></volume><isbn><style face="normal" font="default" size="100%">0368-2048</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The C 1s and N 1s photoelectron spectra of gas-phase 5-aminotetrazole (5ATZ) were recorded using synchrotron radiation, with the aim of evaluating 1H/2H tautomer population ratios. The core-electron binding energies (CEBEs) were estimated from computational results, using the delta self-consistent-field (ŒîSCF) approach. Simulated spectra were generated using these CEBEs and the results from Gaussian-n (Gn, n=1, 2 and 3) and Complete Basis Set (CBS-4M and CBS-Q) methods. Results reveal the almost exclusive predominance of the 2H-tautomer, with a 1H/2H ratio of ca. 0.12/0.88, taken from a gross analysis of the XPS C 1s spectrum, recorded at 365 K.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pinto, R. M.</style></author><author><style face="normal" font="default" size="100%">Dias, A. A.</style></author><author><style face="normal" font="default" size="100%">Coreno, M.</style></author><author><style face="normal" font="default" size="100%">de Simone, M.</style></author><author><style face="normal" font="default" size="100%">Giuliano, B. M.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Costa, M. L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tautomerism in 5-methyltetrazole investigated by core-level photoelectron spectroscopy and ŒîSCF calculations</style></title><secondary-title><style face="normal" font="default" size="100%">Chemical Physics Letters</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S0009261411012371</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">516</style></volume><pages><style face="normal" font="default" size="100%">149–153</style></pages><isbn><style face="normal" font="default" size="100%">0009-2614</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The relative populations of the 1H- and 2H-tautomer of gas-phase 5-methyltetrazole (5MTZ) have been assessed through core-level photoelectron spectroscopy, and compared with the results obtained from Gaussian-n (Gn, n&amp;#xa0;=&amp;#xa0;1, 2 and 3) and Complete Basis Set methods (CBS-4M and CBS-Q). The C 1s and N 1s core‚Äìelectron binding energies (CEBEs) for each ionization site of both tautomers have been computed using the Œîself-consistent-field (ŒîSCF) approach. The C 1s and N 1s XPS spectra, obtained at 313&amp;#xa0;K, yield a 1H/2H tautomer ratio of ca. 0.16/0.84 and 0.21/0.79, respectively.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pinto, R. M.</style></author><author><style face="normal" font="default" size="100%">Dias, A. A.</style></author><author><style face="normal" font="default" size="100%">Costa, M. L.</style></author><author><style face="normal" font="default" size="100%">Rodrigues, P.</style></author><author><style face="normal" font="default" size="100%">Barros, M. T.</style></author><author><style face="normal" font="default" size="100%">Ogden, J. S.</style></author><author><style face="normal" font="default" size="100%">Dyke, J. M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Thermal Decomposition of Methyl 2-Azidopropionate Studied By UV Photoelectron Spectroscopy and Matrix Isolation IR Spectroscopy: Heterocyclic Intermediate Vs. Imine Formation</style></title><secondary-title><style face="normal" font="default" size="100%">The Journal of Physical Chemistry A</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1021/jp2036845</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">American Chemical Society</style></publisher><volume><style face="normal" font="default" size="100%">115</style></volume><pages><style face="normal" font="default" size="100%">8447-8457</style></pages><isbn><style face="normal" font="default" size="100%">1089-5639</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Methyl 2-azidopropionate (N&lt;sub&gt;3&lt;/sub&gt;CH&lt;sub&gt;3&lt;/sub&gt;CHCOOCH&lt;sub&gt;3&lt;/sub&gt;, M2AP) has been synthesized and characterized by different spectroscopic methods, and the thermal decomposition of this molecule has been investigated by matrix isolation infrared (IR) spectroscopy and ultraviolet photoelectron spectroscopy (UVPES). Computational methods have been employed in the spectral simulation of both UVPE and matrix IR spectra, and in the rationalization of the thermal decomposition results. M2AP presents a HOMO vertical ionization energy (VIE) of 9.60±0.03 eV, and contributions from all four lowest energy conformations of this molecule are detected in the gas-phase. Its thermal decomposition starts at ca. 400 °C and is complete at ca. 650 °C, yielding N&lt;sub&gt;2&lt;/sub&gt;, CO, CO&lt;sub&gt;2&lt;/sub&gt;, CH&lt;sub&gt;3&lt;/sub&gt;CN and CH&lt;sub&gt;3&lt;/sub&gt;OH as the final decomposition products. Methyl formate (MF) and CH&lt;sub&gt;4&lt;/sub&gt; are also found during the pyrolysis process. Analysis of the potential energy surface of the decomposition of M2AP, indicates that M2AP decomposes preferentially into the corresponding imine (M2IP), through a 1,2-H shift synchronous with the N&lt;sub&gt;2&lt;/sub&gt; elimination (Type 1 mechanism), requiring an activation energy of 160.8 kJ/mol. The imine further decomposes via two competitive routes: one accounting for CO, CH&lt;sub&gt;3&lt;/sub&gt;OH and CH&lt;sub&gt;3&lt;/sub&gt;CN (ΔE&lt;sub&gt;G3&lt;/sub&gt;=260.2 kJ/mol), and another leading to CO&lt;sub&gt;2&lt;/sub&gt;, CH&lt;sub&gt;4&lt;/sub&gt; and CH&lt;sub&gt;3&lt;/sub&gt;CN (ΔE&lt;sub&gt;G3&lt;/sub&gt;=268.6 kJ/mol). A heterocyclic intermediate (Type 2 mechanism) – 4-Me-5- oxazolidone – can also be formed from M2AP via H transfer from the remote O-CH&lt;sub&gt;3&lt;/sub&gt; group, together with the N&lt;sub&gt;2&lt;/sub&gt; elimination (ΔE&lt;sub&gt;G3&lt;/sub&gt;=260.2 kJ/mol). Finally, a third pathway which accounts for the formation of MF through an M2AP isomer is envisioned.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Surzhykov, A.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Amaro, P</style></author><author><style face="normal" font="default" size="100%">Stöhlker, Th</style></author><author><style face="normal" font="default" size="100%">Fritzsche, S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Two-photon absorption of few-electron heavy ions</style></title><secondary-title><style face="normal" font="default" size="100%">Physical Review A</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">PACS: 32.90.+a, 32.80.Rm, 32.80.Wr, 31.10.+z</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.aps.org/doi/10.1103/PhysRevA.84.022511</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">American Physical Society</style></publisher><volume><style face="normal" font="default" size="100%">84</style></volume><pages><style face="normal" font="default" size="100%">022511</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The two-photon absorption of few-electron ions has been studied by using second-order perturbation theory and Dirac's relativistic equation. Within this framework, the general expressions for the excitation cross sections and rates are derived including a full account of the higher-order multipole terms in the expansion of the electron-photon interaction. While these expressions can be applied to any ion, independent of its particular shell structure, detailed computations are carried out for the two-photon absorption of hydrogen-, helium-, and berylliumlike ions and are compared with the available theoretical and experimental data. The importance of relativistic and nondipole effects in the analysis and computation of induced two-photon transitions is pointed out. Moreover, we discuss the potential of these transitions for atomic parity-violation studies in the high-Z domain.</style></abstract><notes><style face="normal" font="default" size="100%">Copyright (C) 2010 The American Physical SocietyPlease report any problems to prola@aps.orgPRA</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guimarães, D.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Carvalho, M. L.</style></author><author><style face="normal" font="default" size="100%">Vale, G.</style></author><author><style face="normal" font="default" size="100%">Santos, H. M.</style></author><author><style face="normal" font="default" size="100%">Geraldes, V.</style></author><author><style face="normal" font="default" size="100%">Rocha, I.</style></author><author><style face="normal" font="default" size="100%">Capelo, J. L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Ultrasonic energy as a tool to overcome some drawbacks in the determination of lead in brain tissue and urine of rats</style></title><secondary-title><style face="normal" font="default" size="100%">Talanta</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Brain</style></keyword><keyword><style  face="normal" font="default" size="100%">Electrothermal atomization</style></keyword><keyword><style  face="normal" font="default" size="100%">Lead</style></keyword><keyword><style  face="normal" font="default" size="100%">Pb</style></keyword><keyword><style  face="normal" font="default" size="100%">Rats</style></keyword><keyword><style  face="normal" font="default" size="100%">Ultrasonic</style></keyword><keyword><style  face="normal" font="default" size="100%">Urine</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S0039914011007855</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">86</style></volume><pages><style face="normal" font="default" size="100%">442-446 </style></pages><isbn><style face="normal" font="default" size="100%">0039-9140</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">An ultrasonic assisted solid‚Äìliquid extraction method was developed to determine the level of lead in the brain and urine of rats. Lead was determined by electrothermal atomic absorption spectrometry with longitudinal-Zeeman background correction. Several analytical drawbacks were addressed and overcome, namely small brain sample mass and the formation of precipitate in the urine samples. Utrasonication provided by an ultrasonic probe succeeded in extracting lead from brain samples. Furthermore, it was demonstrated that the formation of a precipitate lowered the lead content in the liquid phase of the urine. Lead was back extracted from the precipitate to the liquid phase with the aid of ultrasonic energy and acidifying the urine with 10% v/v nitric acid. A microwave-assisted acid digestion protocol was used to check the completeness of the lead extraction. The within bath and between bath precision was 5% (n&amp;#xa0;=&amp;#xa0;9) and 7% (n&amp;#xa0;=&amp;#xa0;3) respectively. The limit of quantification was 1.05&amp;#xa0;Œºg&amp;#xa0;g‚àí1 for brain samples and 2.1&amp;#xa0;Œºg&amp;#xa0;L‚àí1 for urine samples. A total of 6 samples of urine and 12 samples of brain from control rats and another 6 samples of urine and 12 samples of brain from rats fed with tap water rich in lead acetate were used in this research. Lead levels in brain and urine from exposed rats ranged from1.9&amp;#xa0;¬±&amp;#xa0;0.2&amp;#xa0;Œºg&amp;#xa0;g‚àí1 to 3.5&amp;#xa0;¬±&amp;#xa0;0.2&amp;#xa0;Œºg&amp;#xa0;g‚àí1 and from 752&amp;#xa0;¬±&amp;#xa0;56&amp;#xa0;Œºg&amp;#xa0;L‚àí1 to 60.9&amp;#xa0;¬±&amp;#xa0;1.2&amp;#xa0;mg&amp;#xa0;L‚àí1 respectively. Statistically significant differences of levels of lead in brain and urine were found between exposed and non exposed rats.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mora André</style></author><author><style face="normal" font="default" size="100%">Vieira Pedro</style></author><author><style face="normal" font="default" size="100%">Fonseca José</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Advances in Image Processing Techniques for Drusens Detection and Quantification in Fundus Images</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://oa.uninova.pt/4769/</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">314</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Age-Related Macular Degeneration (ARMD) is considered the leading cause of irreversible blindness in developed countries. One of its risk factors is the presence of drusens, which are retina abnormalities appearing as yellowish spots in fundus images. In this article a methodology using image processing techniques for the quantification of drusens is presented. The method uses splines combined with a contrast normalization to correct uneven illumination, followed by a drusen detection and modelling algorithm. The detection uses a gradient based segmentation algorithm that isolates drusens. They are then fitted by Gaussian functions, producing a model that is used to compute the area affected. To validate the methodology, 22 images were marked by three ophthalmologists and compared to the automated method. The sensitivity and specificity for the automated process (0.664 and 0.963) were comparable to that obtained among the specialists (0.656 and 0.971). Also, the Intraclass Correlation Coefficient showed an agreement of 74.9% between the processed images and the specialists&amp;rsquo; analysis.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Moraes ML</style></author><author><style face="normal" font="default" size="100%">Gomes PJ</style></author><author><style face="normal" font="default" size="100%">Ribeiro PA</style></author><author><style face="normal" font="default" size="100%">Vieira P</style></author><author><style face="normal" font="default" size="100%">Freitas AA</style></author><author><style face="normal" font="default" size="100%">Kohler R</style></author><author><style face="normal" font="default" size="100%">Oliveira ON</style></author><author><style face="normal" font="default" size="100%">Raposo M</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Polymeric scaffolds for enhanced stability of melanin incorporated in liposomes</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">(DPPG)</style></keyword><keyword><style  face="normal" font="default" size="100%">acid</style></keyword><keyword><style  face="normal" font="default" size="100%">adsorption</style></keyword><keyword><style  face="normal" font="default" size="100%">assembled</style></keyword><keyword><style  face="normal" font="default" size="100%">building-blocks</style></keyword><keyword><style  face="normal" font="default" size="100%">by-layer</style></keyword><keyword><style  face="normal" font="default" size="100%">Dipalmitoyl</style></keyword><keyword><style  face="normal" font="default" size="100%">eumelanin</style></keyword><keyword><style  face="normal" font="default" size="100%">films</style></keyword><keyword><style  face="normal" font="default" size="100%">Fluorescence</style></keyword><keyword><style  face="normal" font="default" size="100%">glycerol</style></keyword><keyword><style  face="normal" font="default" size="100%">immobilization</style></keyword><keyword><style  face="normal" font="default" size="100%">Layer-by-layer</style></keyword><keyword><style  face="normal" font="default" size="100%">Liposome</style></keyword><keyword><style  face="normal" font="default" size="100%">Melanin</style></keyword><keyword><style  face="normal" font="default" size="100%">neuromelanin</style></keyword><keyword><style  face="normal" font="default" size="100%">Neutron</style></keyword><keyword><style  face="normal" font="default" size="100%">phosphatidyl</style></keyword><keyword><style  face="normal" font="default" size="100%">reflectivity</style></keyword><keyword><style  face="normal" font="default" size="100%">thin-films</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">350</style></volume><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">The use of melanin in bioinspired applications is mostly limited by its poor stability in solid films. This problem has been addressed here by incorporating melanin into dipalmitoyl phosphatidyl glycerol (DPPG) liposomes, which were then immobilized onto a solid substrate as an LbL film. Results from steady-state and time-resolved fluorescence indicated an increased stability for melanin incorporated into DPPG liposomes. If not protected by liposomes, melanin looses completely its fluorescence properties in LbL films. The thickness of the liposome-melanin layer obtained from neutron reflectivity data was 4.1 +/- 0.2 nm, consistent with the value estimated for the phospholipid bilayer of the liposomes, an evidence of the collapse of most liposomes. On the other hand, the final roughness indicated that some of the liposomes had their structure preserved. In summary, liposomes were proven excellent for encapsulation, thus providing a suitable environment, closer to the physiological conditions without using organic solvents or high pHs. (C) 2010 Elsevier Inc. All rights reserved.</style></abstract><auth-address><style face="normal" font="default" size="100%">Univ Nova Lisboa, Univ Fed Sao Carlos, Univ Fed Sao Carlos, DEQB IST, Univ Sao Paulo, Helmholtz Zentrum Berlin Mat &amp; Energie</style></auth-address></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mora André</style></author><author><style face="normal" font="default" size="100%">Vieira Pedro</style></author><author><style face="normal" font="default" size="100%">Fonseca José</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The Weighed Matching Analysis method and the accuracy of automated retinal image processing</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">comparison</style></keyword><keyword><style  face="normal" font="default" size="100%">digital</style></keyword><keyword><style  face="normal" font="default" size="100%">image</style></keyword><keyword><style  face="normal" font="default" size="100%">images</style></keyword><keyword><style  face="normal" font="default" size="100%">processing,</style></keyword><keyword><style  face="normal" font="default" size="100%">segmentation,</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://oa.uninova.pt/4763/</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The assessment of techniques of automatic detection of structures in retinal images is mostly donethrough the comparison between the results produced automatically and the ones produced manuallyby specialists. When the analyses are subjective some disparities are common to appear amongdifferent specialists as well as within the repeated analysis of one specialist. A decisive mechanism istherefore needed to obtain more accurate results.In this article it is presented the weighed matching analysis method, which was developed to be apixel to pixel analysis that uses the statistical significance of the observations to differentiate positiveand negative pixels. It is based on the creation of a probabilities map, which results from thespecialists' markings, followed by the calculus of sensitivity, specificity and kappa coefficient betweenone analysis and the probabilities map.This method was validated with a dataset having 22 retinal images with visible drusen. These weremarked by 8 independent specialists and by the automatic detection method. The results ofsensitivity, specificity and kappa coefficient were calculated using both the weighed matching analysismethod and the binary method, for comparison purposes.It was concluded that this method improved the binary matching analysis, especially on image setsthat contain analysis with significant variability, by automatically removing outlier pixels and by havingrewards and penalizations with different weights based on the probabilities map values when there isno absolute agreement. Also, this method allows not only the method's validation, but also thequantitative comparison between specialists to identify outliers.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Surzhykov, A.</style></author><author><style face="normal" font="default" size="100%">Volotka, A.</style></author><author><style face="normal" font="default" size="100%">Fratini, F.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author><author><style face="normal" font="default" size="100%">Plunien, G.</style></author><author><style face="normal" font="default" size="100%">Stöhlker, Th</style></author><author><style face="normal" font="default" size="100%">Fritzsche, S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Angular correlations in the two-photon decay of heliumlike heavy ions</style></title><secondary-title><style face="normal" font="default" size="100%">Physical Review A</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">31.10.+z, 31.30.jc, 32.80.Wr</style></keyword><keyword><style  face="normal" font="default" size="100%">PACS:</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.aps.org/doi/10.1103/PhysRevA.81.042510</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">4</style></number><publisher><style face="normal" font="default" size="100%">American Physical Society</style></publisher><volume><style face="normal" font="default" size="100%">81</style></volume><pages><style face="normal" font="default" size="100%">042510</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The two-photon decay of heavy, helium-like ions is investigated based on second-order perturbation theory and Dirac’s relativistic equation. Special attention has been paid to the angular emission of the two photons (i.e., how the angular correlation function depends on the shell structure of the ions in their initial and final states). Moreover, the effects from the (electric and magnetic) nondipole terms in the expansion of the electron-photon interaction are discussed. Detailed calculations have been carried out for the two-photon decay of the 1s2s1S0, 1s2s3S1, and 1s2p3P0 states of helium-like Xe52+, Au77+, and U90+ ions.</style></abstract><notes><style face="normal" font="default" size="100%">Copyright (C) 2010 The American Physical SocietyPlease report any problems to prola@aps.orgPRA</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pinto, R. M.</style></author><author><style face="normal" font="default" size="100%">Dias, A. A.</style></author><author><style face="normal" font="default" size="100%">Costa, M. L.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Computational study on the ionization energies of benzyl azide and its methyl derivatives</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Molecular Structure: THEOCHEM</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Ab initio</style></keyword><keyword><style  face="normal" font="default" size="100%">Benzyl azide</style></keyword><keyword><style  face="normal" font="default" size="100%">Ionization energy</style></keyword><keyword><style  face="normal" font="default" size="100%">Photoelectron spectroscopy</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/B6TGT-4YDT3SS-1/2/5a8220b271efdcb2d81ee68dfcd0d0a7</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">1-3</style></number><volume><style face="normal" font="default" size="100%">948</style></volume><pages><style face="normal" font="default" size="100%">15-20</style></pages><isbn><style face="normal" font="default" size="100%">0166-1280</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Ionization energies of benzyl azide (BA), C6H5CH2N3, its methyl derivatives, 2-, 3- and 4-methyl benzyl azide and (1-azidoethyl)benzene (2-, 3- and 4-MBA and 1-AEB), (CH3)C6H4CH2 N3, have been calculated with several basis sets, with M¯ller-Plesset and Hartree-Fock methods. The data are compared to the ionizations energies obtained from HeI photoelectron spectroscopy (UVPES) experiments, in order to support the correct assignment of the bands. The nature and character of the molecular orbitals are also discussed.</style></abstract><work-type><style face="normal" font="default" size="100%">doi: DOI: 10.1016/j.theochem.2010.02.011</style></work-type></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pinto, R. M.</style></author><author><style face="normal" font="default" size="100%">Olariu, R. I.</style></author><author><style face="normal" font="default" size="100%">Lameiras, J.</style></author><author><style face="normal" font="default" size="100%">Martins, F. T.</style></author><author><style face="normal" font="default" size="100%">Dias, A. A.</style></author><author><style face="normal" font="default" size="100%">Langley, G. J.</style></author><author><style face="normal" font="default" size="100%">Rodrigues, P.</style></author><author><style face="normal" font="default" size="100%">Maycock, C. D.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Duarte, M. F.</style></author><author><style face="normal" font="default" size="100%">Fernandez, M. T.</style></author><author><style face="normal" font="default" size="100%">Costa, M. L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Study of selected benzyl azides by UV photoelectron spectroscopy and mass spectrometry</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Molecular Structure</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Benzyl azides</style></keyword><keyword><style  face="normal" font="default" size="100%">EIMS</style></keyword><keyword><style  face="normal" font="default" size="100%">IRC calculations</style></keyword><keyword><style  face="normal" font="default" size="100%">UVPES</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/B6TGS-50HYGG6-1/2/4382c3d63371e36f8393d336f3551506</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">1-3</style></number><volume><style face="normal" font="default" size="100%">980</style></volume><pages><style face="normal" font="default" size="100%">163-171</style></pages><isbn><style face="normal" font="default" size="100%">0022-2860</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Benzyl azide and the three methylbenzyl azides were synthesized and characterized by mass spectrometry (MS) and ultraviolet photoelectron spectroscopy (UVPES). The electron ionization fragmentation mechanisms for benzyl azide and their methyl derivatives were studied by accurate mass measurements and linked scans at constant B/E. For benzyl azide, in order to clarify the fragmentation mechanism, labelling experiments were performed. From the mass analysis of methylbenzyl azides isomers it was possible to differentiate the isomers ortho, meta and para. The abundance and nature of the ions resulting from the molecular ion fragmentation, for the three distinct isomers of substituted benzyl azides, were rationalized in terms of the electronic properties of the substituent. Concerning the para-isomer, IRC calculations were performed at UHF/6-31G(d) level. The photoionization study of benzyl azide, with He(I) radiation, revealed five bands in the 8-21 eV ionization energies region. From every photoelectron spectrum of methylbenzyl azides isomers it has been identified seven bands, on the same range as the benzyl azide. Interpretation of the photoelectron spectra was accomplished applying Koopmans' theorem to the SCF orbital energies obtained at HF/6-311++G(d, p) level.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Costa, A. M.</style></author><author><style face="normal" font="default" size="100%">Marques, J. P.</style></author><author><style face="normal" font="default" size="100%">Martins, M. C.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">X-ray-spectroscopy analysis of electron-cyclotron-resonance ion-source plasmas</style></title><secondary-title><style face="normal" font="default" size="100%">Physical Review A</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">PACS: 32.70.-n, 32.70.Fw</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.aps.org/doi/10.1103/PhysRevA.82.062516</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">6</style></number><publisher><style face="normal" font="default" size="100%">American Physical Society</style></publisher><volume><style face="normal" font="default" size="100%">82</style></volume><pages><style face="normal" font="default" size="100%">062516</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Analysis of x-ray spectra emitted by highly charged ions in an electron-cyclotron-resonance ion source (ECRIS) may be used as a tool to estimate the charge-state distribution (CSD) in the source plasma. For that purpose, knowledge of the electron energy distribution in the plasma, as well as the most important processes leading to the creation and de-excitation of ionic excited states are needed. In this work we present a method to estimate the ion CSD in an ECRIS through the analysis of the x-ray spectra emitted by the plasma. The method is applied to the analysis of a sulfur ECRIS plasma.</style></abstract><notes><style face="normal" font="default" size="100%">Copyright (C) 2010 The American Physical SocietyPlease report any problems to prola@aps.orgPRA</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mora André</style></author><author><style face="normal" font="default" size="100%">Fonseca José</style></author><author><style face="normal" font="default" size="100%">Vieira Pedro</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Retina Image Gradings&amp;rsquo; Comparison by Weighted Matching Analysis</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">analysis</style></keyword><keyword><style  face="normal" font="default" size="100%">evaluation,
statistical</style></keyword><keyword><style  face="normal" font="default" size="100%">image</style></keyword><keyword><style  face="normal" font="default" size="100%">matching</style></keyword><keyword><style  face="normal" font="default" size="100%">processing,</style></keyword><keyword><style  face="normal" font="default" size="100%">retina</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://oa.uninova.pt/2129/</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The evaluation of automatic detection of structures on medical images is usually done by calculating a pixel to pixel analysis such as sensitivity and specificity analysis. However, when the sample contains a high variability, the average of these indicators is not recommended as it can hide outliers. In this article we present a weighted matching analysis which is also a pixel to pixel analysis that uses the statistical significance of observations to differentiate positive and negative pixels. It computes a probabilities map from these same observations and calculates the F-measure between the analysis and the statistics image. The proposed method was applied on the evaluation of drusens automatic quantification algorithm developed by the authors. It was used to compare the automatic generated images to a set of 22 images graded by four ophthalmologists. They were also analyzed using the binary analysis of positive and negative pixels, for comparative purposes. We concluded that the weight matching analysis improves the binary image evaluation, especially on image sets that contain analysis with significant variability, and that are also useful for dynamic samples due to its ability to be easily updated.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Leal G</style></author><author><style face="normal" font="default" size="100%">Vieira P</style></author><author><style face="normal" font="default" size="100%">Neves C</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">DEVELOPING A PUPILLOMETER</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Instrumentation;</style></keyword><keyword><style  face="normal" font="default" size="100%">Medical</style></keyword><keyword><style  face="normal" font="default" size="100%">Ophthalmology</style></keyword><keyword><style  face="normal" font="default" size="100%">Pupil;</style></keyword><keyword><style  face="normal" font="default" size="100%">Pupillometer;</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Dec</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guerra, M</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Electron impact ionization of atomic target inner-shells</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Physics: Conference Series</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://stacks.iop.org/1742-6596/194/042047</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">4</style></number><volume><style face="normal" font="default" size="100%">194</style></volume><pages><style face="normal" font="default" size="100%">042047</style></pages><isbn><style face="normal" font="default" size="100%">1742-6596</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">There is a need for reliable theoretical methods to calculate electron-impact total ionization cross sections for the large number of neutral atoms and ions with open shell structures. These cross sections are used in a wide range of scientific and industrial applications, such as astrophysical plasmas, atmospheric science, X-ray lasers, magnetic fusion, radiation physics, semiconductor fabrication, accelerator physics and tumor therapy physics. The binary-encounter-Bethe (BEB) model [1], using an analytic formula that requires only two atomic constants, the binding energy and kinetic energy of the electrons, generates direct ionization cross sections for any neutral atom (or molecule), which are reliable in intensity (15%) and shape from the ionization threshold to a few keV in the incident energy [3], or to thousands keV if we consider its relativistic version(RBEB) [2]. In this work we present K- and L-shell ionization cross sections calculations for heavy atoms.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Surzhykov, A.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Amaro, P</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Negative-continuum effects on the two-photon decay rates of hydrogenlike ions</style></title><secondary-title><style face="normal" font="default" size="100%">Physical Review A (Atomic, Molecular, and Optical Physics)</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">atomic structure</style></keyword><keyword><style  face="normal" font="default" size="100%">Dirac equation</style></keyword><keyword><style  face="normal" font="default" size="100%">hydrogen neutral atoms</style></keyword><keyword><style  face="normal" font="default" size="100%">perturbation theory</style></keyword><keyword><style  face="normal" font="default" size="100%">relativistic corrections</style></keyword><keyword><style  face="normal" font="default" size="100%">spontaneous emission</style></keyword><keyword><style  face="normal" font="default" size="100%">uranium</style></keyword><keyword><style  face="normal" font="default" size="100%">xenon</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.aps.org/abstract/PRA/v80/e052511</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">5</style></number><publisher><style face="normal" font="default" size="100%">APS</style></publisher><volume><style face="normal" font="default" size="100%">80</style></volume><pages><style face="normal" font="default" size="100%">052511</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Two-photon decay of hydrogenlike ions is studied within the framework of second-order perturbation theory, based on the relativistic Dirac's equation. Special attention is paid to the effects arising from the summation over the negative-energy (intermediate virtual) states that occur in such a framework. In order to investigate the role of these states, detailed calculations have been carried out for the 2s1/2--&gt;1s1/2 and 2p1/2--&gt;1s1/2 transitions in neutral hydrogen H as well as for hydrogenlike xenon Xe53+ and uranium U91+ ions. We found that for a correct evaluation of the total and energy-differential decay rates, summation over the negative-energy part of Dirac's spectrum should be properly taken into account both for high-Z and low-Z atomic systems.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Martins, M. C.</style></author><author><style face="normal" font="default" size="100%">Marques, J. P.</style></author><author><style face="normal" font="default" size="100%">Costa, A. M.</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author><author><style face="normal" font="default" size="100%">Schlesser, S.</style></author><author><style face="normal" font="default" size="100%">Bigot, E.-O. Le</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Production and decay of sulfur excited species in an electron-cyclotron-resonance ion-source plasma</style></title><secondary-title><style face="normal" font="default" size="100%">Physical Review A (Atomic, Molecular, and Optical Physics)</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Dirac-Fock calculations</style></keyword><keyword><style  face="normal" font="default" size="100%">excited states</style></keyword><keyword><style  face="normal" font="default" size="100%">ground states</style></keyword><keyword><style  face="normal" font="default" size="100%">inner-shell ionisation</style></keyword><keyword><style  face="normal" font="default" size="100%">plasma sources</style></keyword><keyword><style  face="normal" font="default" size="100%">plasma X-ray sources</style></keyword><keyword><style  face="normal" font="default" size="100%">positive ions</style></keyword><keyword><style  face="normal" font="default" size="100%">radiative lifetimes</style></keyword><keyword><style  face="normal" font="default" size="100%">sulphur</style></keyword><keyword><style  face="normal" font="default" size="100%">X-ray spectra</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.aps.org/abstract/PRA/v80/e032501</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">3</style></number><publisher><style face="normal" font="default" size="100%">APS</style></publisher><volume><style face="normal" font="default" size="100%">80</style></volume><pages><style face="normal" font="default" size="100%">032501</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The most important processes for the creation of S12+ to S14+ ions excited states from the ground configurations of S9+ to S14+ ions in an electron cyclotron resonance ion source, leading to the emission of K x-ray lines, are studied. Theoretical values for inner-shell excitation and ionization cross sections, including double-KL and triple-KLL ionizations, transition probabilities and energies for the de-excitation processes, are calculated in the framework of the multiconfiguration Dirac-Fock method. With reasonable assumptions about the electron energy distribution, a theoretical Kalpha x-ray spectrum is obtained, which is compared to recent experimental data.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Amaro, P</style></author><author><style face="normal" font="default" size="100%">Santos, J. P.</style></author><author><style face="normal" font="default" size="100%">Parente, F.</style></author><author><style face="normal" font="default" size="100%">Surzhykov, A.</style></author><author><style face="normal" font="default" size="100%">Indelicato, P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Resonance effects on the two-photon emission from hydrogenic ions</style></title><secondary-title><style face="normal" font="default" size="100%">Physical Review A (Atomic, Molecular, and Optical Physics)</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">bound states</style></keyword><keyword><style  face="normal" font="default" size="100%">Dirac equation</style></keyword><keyword><style  face="normal" font="default" size="100%">quantum electrodynamics</style></keyword><keyword><style  face="normal" font="default" size="100%">radiative lifetimes</style></keyword><keyword><style  face="normal" font="default" size="100%">two-photon processes</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://link.aps.org/abstract/PRA/v79/e06250</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">6</style></number><volume><style face="normal" font="default" size="100%">79</style></volume><pages><style face="normal" font="default" size="100%">062504</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">A theoretical study of the all two-photon transitions from initial bound states with ni=2,3 in hydrogenic ions is presented. High-precision values of relativistic decay rates for ions with nuclear charge in the range 1&lt;=Z&lt;=92 are obtained through the use of finite basis sets for the Dirac equation constructed from B splines. We also report the spectral (energy) distributions of several resonant transitions, which exhibit interesting structures, such as zeros in the emission spectrum, indicating that two-photon emission is strongly suppressed at certain frequencies. We compare two different approaches (the line profile approach and the QED approach based on the analysis of the relativistic two-loop self-energy) to regularize the resonant contribution to the decay rate. Predictions for the pure two-photon contributions obtained in these approaches are found to be in good numerical agreement.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pinto, R. M.</style></author><author><style face="normal" font="default" size="100%">Dias, A. A.</style></author><author><style face="normal" font="default" size="100%">Costa, M. L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Theoretical study of the molecular properties of methyl 2-azidopropionate and methyl 3-azidopropionate</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Molecular Structure: THEOCHEM</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Ab initio</style></keyword><keyword><style  face="normal" font="default" size="100%">Methyl 2-azidopropionate</style></keyword><keyword><style  face="normal" font="default" size="100%">Methyl 3-azidopropionate</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/B6TGT-4TPHRHP-2/2/bf3660141ac174abe19b12316c4366b3</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">1-3</style></number><volume><style face="normal" font="default" size="100%">894</style></volume><pages><style face="normal" font="default" size="100%">80-87</style></pages><isbn><style face="normal" font="default" size="100%">0166-1280</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">An extensive conformational analysis was carried at ab initio and DFT levels of theory on two molecules - methyl 2-azidopropionate (N3CH3CHCOOCH3) and methyl 3-azidopropionate (N3CH2CH2COOCH3). In each case, the lowest energy conformers were characterized and the energy barriers between them were estimated. Ionization energies and vibrational frequencies were also computed, in order to support future spectroscopic studies with ultraviolet photoelectron spectroscopy (UVPES) and matrix isolation infrared spectroscopy (Matrix Isolation FTIR).</style></abstract><notes><style face="normal" font="default" size="100%">doi: DOI: 10.1016/j.theochem.2008.10.007</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Moitinho F</style></author><author><style face="normal" font="default" size="100%">Mora A</style></author><author><style face="normal" font="default" size="100%">Vieira P</style></author><author><style face="normal" font="default" size="100%">Fonseca J</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">AD3RI a tool for computer - automatic Drusen detection</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">detection;</style></keyword><keyword><style  face="normal" font="default" size="100%">Drusen</style></keyword><keyword><style  face="normal" font="default" size="100%">image</style></keyword><keyword><style  face="normal" font="default" size="100%">Medical</style></keyword><keyword><style  face="normal" font="default" size="100%">modelling</style></keyword><keyword><style  face="normal" font="default" size="100%">processing;</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language></record></records></xml>