Características morfológicas do sequestro pulmonar

ABSTRACTThe pulmonary sequestration corresponds to pulmonary tissue intra or extra-lobar with systemic arterial nutrition and collateral bronchial ramification. It is unfrequent and the intra-lobar identification depends on the correct clinical signs and morphology.The correct study includes imagiologic identification of the systemic artery and morphological characterization of parenchymal changes. These allow identification of abnormal pulmonary parenchyma in intra-lobar cases and were observed using histochemical and imunohistochemical routine methods, both in intra and extra-lobar cases. Four cases of intra-lobar sequestration and four cases of extra-lobar sequestration were studied with application of histochemical technics – Movat’s pentachrome stain and Verhoeff – and immunolabelling with CK7 and TTF1.The parenchymal inflammatory distortion by colagenization was constantly seen as was BALT hyperplasia and pleuritis.By using Movat’s pentachrome stain we characterized the sequestration by identifying the artery and the parenchymal changes.The CK7 was usefull in the identification of parenchymal damage, together with the antibody anti-TTF1 that had a variable expression, stronger in areas of inflammation because of PII hyperplasia.REV PORT PNEUMOL 2003 IX (2): 153-16

Including context in a routing algorithm for the internet of things

Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Engenharia InformáticaThe “Internet of Things” assumes that a large number of devices which are used on a daily basis will eventually become connected to the Internet. This scenario will provide room for a large set of new applications, however the network connections of an enormous set of nodes, which can be connected and disconnected, can move around and which have limitations with regards to their processing and communication capabilities, raises the need for the development of new message routing algorithms, different from those being in use today. In this thesis, a contribution is made towards the development of this type of algorithms. In particular, the idea which is tested is whether routing algorithms can improve their performance at various levels, such as, message delivery time, number of messages lost, power consumption, etc., if in the routing decisions these algorithms can make use of the concept of “Context”. Within the framework of this thesis, the “Context” is the organized collection of information which the routing algorithm collects from the environment surrounding the network nodes, and which allows it to make better routing decisions. This information can be related to low-level issues, such as, node location, power required to send a message, etc., as well as, with constraints related to the application, such as, message priority, maximum delivery time, etc. In order to evaluate this approach, this thesis proposes a routing algorithm called C-AODV. As the name suggests, it is based on the ADOV algorithm, however it is modified in several aspects; in particular, the possibility of using information collected from the context can be utilized to improve message routing. In order to test the proposed solution, several tests were performed on the NS-3 simulator which allowed the evaluation of the algorithm functionalities. The tests performed indicate that the proposed solution is valid

Ornamental stone potential areas for land use planning: a case study in a limestone massif from Portugal

ABSTRACT: Nowadays, the difficulties of the mining sector in accessing the territory are mostly related to inadequate land use plans. Mineral potential maps have become quite relevant for the land use planning authorities as a decision support tool. This work's goal is to present a methodology based on geological criteria, for the delimitation of potential areas for ornamental stones production in a limestone area of Portugal known as Macico Calcario Estremenho. This is one of the world's most important regions producing limestone blocks for ornamental purposes. The methodology, applied at a scale similar to the commonly used in land use planning, considers two main geological-based criteria for the definition of potential areas, namely the homogeneity criterion, related to the textural and chromatic homogeneity of the potentially productive lithologic units, and the dimension criterion, which refers to the thickness of the productive unit, to the volume of the deposit and to its spatial layout. Based on the criteria, two main types of potential areas for ornamental stones' production were delimited: specific areas, where the lithostratigraphic units demonstrate ornamental suitability at a very local scale due to highly appreciated particular features, and areas corresponding to the entire outcrop area of some of the lithostratigraphic units, which due to the resource volume are the most relevant potential areas.info:eu-repo/semantics/publishedVersio

Web portal: total challenge

The Web is an extraordinary success, for its simplicity. This simplicity has brought disadvantages, because with vast amounts of information available, the search is a difficult, time-consuming and sometimes inefficient task, creating the need for a strategic information management. To overcome this need came the portals. The characteristics of portals differ from each other, which made them appear different definitions. Also arose several classifications of portals, one of which considers three dimensions to classify them: the scope of content, the aim of the portal and the range of its intended users. With this work, the authors intend to build a Web Portal to support one or more serious games. A database is shared with the Web Portal. This portal will serve to make an interface between the user and the games, for the dissemination and support of these and as a platform for managing and monitoring results.(undefined

Práticas de educação em saúde de estudantes de enfermagem e de outros cursos de ensino superior

As práticas de Educação em Saúde são influenciadas pela abordagem que cada profissional adota, uma vez que implicam um diferente relacionamento com o utente, moldando a forma como se desenvolvem. Objetivo: caracterizar as práticas de Educação em Saúde dos estudantes de três cursos de enfermagem e de outros quatro cursos de ensino superior ligados ao sector da saúde (Medicina) e ao setor da educação (Professores do Ensino Básico, Educadores de Infância e de Serviço Social). Metodología: Estudo descritivo-correlacional e transversal, de abordagem quantitativa, onde participaram 709 estudantes (62,6% do universo), dos 1º e 4º anos, que preencheram um questionário desenvolvido e validado para o efeito. Resultados: Apenas 40,9% dos estudantes assinalaram terem realizado experiência prática durante o curso, principalmente os do 4º ano. A maior parte faz Educação em Saúde “Muitas vezes” (41,7%), especialmente “Saúde Infantil” (23,1%). Estudantes com conceito “Abrangente” de Promoção da Saúde desenvolvem esta atividade com maior frequência do que os de conceito “Reducionista” ou “Misto”. Os estudantes dos três cursos de Enfermagem praticam Educação em Saúde com mais frequência e em áreas mais diversificadas do que os colegas dos outros cursos. As caraterísticas das práticas de Educação em Saúde parecem ser influenciadas pelas variáveis Curso, Ano e Tipo de conceito de Promoção da Saúde. Os resultados obtidos poderão contribuir para melhorar o desempenho docente e as práticas de Educação em Saúde.Practices in Health Education are influenced by the approach that each professional adopts, since they imply a different relationship with the user, shaping the way the approaches develop. Objective: To characterize the Health Education practices of students from three nursing courses and four other higher education courses related to health sector (Medicine) and education (Basic Education Teachers, Childhood Educators and Social Services). Methodology: A descriptive-correlational and cross-sectional study with a quantitative approach, where 709 students participated (62.6 % of the universe), of the 1st and 4th years, who completed a questionnaire developed and validated for this purpose. Results: Only 40.9 % of students indicated they had conducted practical experience during the course, especially the 4th year students. Most of them develop Health Education "Often" (41.7 %), especially "Child Health" (23.1 %). Students with "Broad" concept of Health Promotion developed this activity more frequently than the concept "Reductionist" or "Mixed". Students of the three nursing courses practiced Health Education more often and in more diverse areas than their colleagues from other courses.Las prácticas de educación para la salud están influenciadas por el enfoque profesional que cada uno adopta, lo que implica una relación diferente con el usuario, de acuerdo a la cómo se desarrollan. Objetivo: caracterizar las prácticas de Educación para la Salud de los estudiantes en tres cursos de enfermería y cuatro cursos de la educación superior vinculados al sector de la salud (medicina) y sector de la educación (maestros, educadores niños y servicios sociales). Metodología: Estudio descriptivo-correlaciónale y transversal con un enfoque cuantitativo, que involucró a 709 estudiantes del 1º y del 4º años, que diligenciaron un cuestionario ,el cual fue validado. Resultados: Sólo el 40,9% de los estudiantes informa haber tenido experiencia práctica durante el curso, sobre todo los de 4º año. La mayoría reporta que realiza acciones de Educación para la Salud “Muchas veces” (41,7%), especialmente “Salud Infantil” (23,1%). Los estudiantes manejan un concepto “Global” de la Promoción de la Salud, realizan prácticas de Educación en Salud con mayor frecuencia de los que tienen un concepto “Reduccionista” o “Mixto”. Los estudiantes de enfermería desarrollan esta actividad con más frecuencia y en áreas más diversas que los de otros cursos. Las características de la práctica de la Educación para la salud parecen estar influidos por variables Curso, Año y Tipo de concepto de Promoción de la Salud. Los resultados obtenidos contribuyen a mejorar el desempeño de los docentes y las prácticas de la Educación para la Salud. Palabras clave: Educación en Salud; Estudiantes; Educación en Enfermería; Educación Superior.CIEC - Centro de Investigação em Estudos da Criança, UM (UI 317 da FCT

A static approach to the Nelson-Siegel-Svensson model : an application for several negative yield cases

The appearance of negative bond yields presents significant challenges for the fixed income markets, which mainly concern related forecasting models. The Nelson-Siegel-Svensson model (NSS) is one of the models that is most frequently used by central banks to estimate the term structure of interest rates. The objective of this study is to evaluate the application of the NSS model to fit the yield curve of a set of 20 countries, the majority from the Eurozone, which registered negative sovereign bond yields. We conclude that the model adjusted well for all countries’ yield curves, although no changes or constraints were introduced. In addition, a comparison was carried out between market instantaneous interest rate and the interest rate for the very distant future, which the model can predict, with good results for the instantaneous interest rate. An evaluation of the possible behaviour of shared debt securities (i.e. Eurobonds) was also analysed. In conclusion, the NSS model seems to remain a valuable, easy to use, and adaptable tool, to fit negative yield curves, for monetary policy institutions and market players alike.info:eu-repo/semantics/publishedVersio

A comparison of mass parameters determination using capacitive and optical sensors

This paper presents a comparison study between the use of 1mmresolution capacitive and optical sensors for the determination of yarn mass parameters. A parallel plate capacitive sensor to determine yarn mass variations and a yarn diameter and hairiness determination solution using optical sensors and integrating optical signal processing based on Fourier analysis are described. As there is a high correlation between yarn diameter and yarn mass, it is possible to determine yarn mass and infer variations in yarn diameter and vice versa. Moreover, by optically detecting the degree of yarn hairiness, one can quantify its influence on the capacitive sensor mass variation measurements. Here we present the results of a signal processing analysis and statistical description of measurements carried out in two 100% cotton yarns with a linear mass of 59 and 295 g/km performed in yarn system quality (YSQ) machine. We conclude that an accurate yarn characterization can be carried out using optical sensors alone, reducing system’s cost and complexity and increasing efficiency.Fundação para a Ciência e a Tecnologia (FCT) - BD/19028/200

History of education in teacher formation at the University of Aveiro

A História da Educação surge na Universidade de Aveiro associada à formação de professores. O seu aparecimento, importância, luta pela sobrevivência e representatividade estão associados à formação inicial de professores — do ensino pré-escolar, básico e secundário — e aos cursos de pós-graduação, especialmente ao Mestrado em Ciências da Educação na especialização de Formação Pessoal e Social.The History of Education in the University of Aveiro is associated with teachers’ qualification. It’s appearance, struggle for survival and representativeness are associated with teachers initial training — from kindergarten, to middle and secondary teaching and post-graduation courses —, especially the Masters in Educational Sciences in the specialization of Personal and Social Qualification