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Dissertação para obtenção do grau de Mestre no Instituto Universitário Egas Moniz A Sociedade atual está cada vez mais atenta às plantas e aos seus benefícios em diferentes áreas da Saúde, Estética, Alimentar, etc, o que explica que a exploração e utilização do Aloé Vera tenha vindo a aumentar nos últimos anos, com a comunidade científica a incentivar a investigação das suas propriedades e possíveis utilizações no campo da Medicina Dentária. Aloé Vera, uma planta cujo interesse já remonta há vários anos, mas a relevância das suas vantagens e aplicações químicas e biológicas em Medicina Dentária continua uma questão recente e incerta, que devia ser mais explorada, com diversos autores responsáveis por diversos estudos neste campo a incentivar o mesmo. Por ser uma fonte de 19 aminoácidos essenciais que são exigidos pelo nosso corpo e rica em vitaminas e minerais, a Aloé Vera ganhou uma boa reputação e é considerada campeã entre os medicamentos de saúde, mas também o melhor alimento saudável do século XXI. Tem propriedades em diversos campos: medicinais, alimentares, mas poucos efeitos secundários relatados em estudos recentes, provando ser uma mais-valia muitas vezes em comparação com outros produtos conhecidos e mais utilizados em Medicina Dentária. No futuro, deverá ser feito um esforço conjunto na comunidade científica de investigar mais profundamente as possibilidades que esta planta oferece, devido à escassez de artigos disponíveis na internet, de forma a acompanharmos a preocupação atual com a natureza, com as alterações climáticas, preservando e valorizando mais aquilo que o planeta Terra nos oferece, o que vai de encontro às ideologias desta nova geração de futuros médicos dentistas, mas também conseguirmos uma opção mais natural, pois compostos naturais são um substituto mais seguro no tratamento de infeções orais e são também uma abordagem na dissuasão e tratamento de doenças adicionais, incluindo as cáries dentárias. Today's society is increasingly more attentive to plants and their benefits in different areas of Health, Aesthetics, Food, etc., which explains why the exploration and use of Aloe Vera has been increasing in recent years, with the scientific community encouraging research into its properties and possible uses in the field of Dental Medicine. Aloe Vera, a plant whose interest goes back several years, but the relevance of its advantages and chemical and biological applications in Dentistry remains a recent and uncertain question which should be further explored, with several authors responsible for several studies in this field encouraging the same. Being a source of 19 essential amino acids that are required by our body and rich in vitamins and minerals, Aloe Vera has gained a good reputation and is considered a champion among health medicines, but also the best health food of the 21st century. It has properties in several fields: medicinal, food, but few side effects reported in recent studies, proving to be an asset often compared to other known and most used products in dentistry. In the future, a joint effort should be made in the scientific community to investigate more deeply the possibilities that this plant offers, due to the scarcity of articles available on the internet, in order to keep up with the current concern with nature, with climate change, preserving and valuing more what planet Earth offers us, which is in line with the ideologies of this new generation of future dentists, but also to achieve a more natural option, as natural compounds are a safer substitute in the treatment of oral infections and are also an approach in the deterrence and treatment of additional diseases, including dental caries.

Em plena pandemia, perante o encerramento abrupto das escolas e a consequente suspensão das atividades letivas e não letivas facilmente se percebe que, se existem dificuldades em trabalhar com a generalidade dos alunos, elas ganham maior relevância quando se trata de alunos com necessidade de mobilização de medidas seletivas ou adicionais de suporte à aprendizagem e à inclusão. Esta preocupação motivou a questão de partida deste estudo: que respostas educativas foram dadas pela Educação Especial, durante a pandemia, na modalidade de ensino a distância aos alunos com medidas seletivas e/ou adicionais? Desta questão emergiu o objetivo geral: conhecer a resposta educativa no âmbito da Educação Especial, num Agrupamento de escolas do Algarve. O estudo enquadra-se num paradigma qualitativo, sendo um estudo exploratório na forma de estudo de caso centrado num Agrupamento de escolas do Algarve. A recolha de dados foi realizada através de entrevistas semiestruturadas a seis professores de educação especial, a três técnicas especializadas, à representante da Direção do Agrupamento na equipa multidisciplinar de apoio à educação inclusiva e a cinco encarregadas de educação de alunos a usufruírem de medidas seletivas ou adicionais e procedemos, ainda, à análise de documentos do Agrupamento. Este estudo permitiu perceber que durante o ensino a distância são os alunos com medidas adicionais que sofrem mais perdas a nível académico, pessoal e social. A extensão e profundidade desses prejuízos estão diretamente relacionadas com o nível de autonomia do aluno, com as dificuldades individuais, com o acesso e capacidade de utilização de meios digitais e também com as competências familiares. O ensino presencial é a situação preferencial, mas perante circunstancias em que o ensino a distância é uma necessidade, a implementação de planos com características inclusivas contribuem para a mitigação desses impactos negativos. In the midst of a pandemic, faced with the abrupt closure of schools and the consequent suspension of teaching and non-teaching activities, it is easy to see that, if there are difficulties in working with most students, they gain greater relevance when it comes to students in need of mobilization of selective or additional measures to support learning and inclusion. This concern motivated the starting question of this study: what educational responses were given by special education, during the pandemic, in the distance learning modality to students with selective and/or additional measures? From this question emerged the general objective: to know the educational response within the scope of Special Education, in a school cluster in the Algarve. The study fits into a qualitative paradigm, being an exploratory study in the form of a case study centered in a school cluster in the Algarve. Data collection was carried out through semi-structured interviews with six special educational needs teachers, three therapists, the representative of the school board in the multidisciplinary team to support inclusive education and five parents/guardians of students benefiting from selective or additional measures and we also proceeded to the analysis of documents of the cluster. This study allowed us to understand that during distance learning, students with additional measures suffer more academic, personal and social losses. The extent and depth of these losses are directly related to the student's level of autonomy, individual difficulties, access and ability to use digital media and also family skills. Face-to-face teaching is the preferred situation, but in circumstances where distance learning is a necessity, the implementation of plans with inclusive characteristics contribute to the mitigation of these negative impacts.

© 2020 Taylor & Francis Group, LLC., Positive Youth Development (PYD) presents a strength-based conception of transition to adulthood that has been well-supported by literature to date. However, research is needed to integrate the pathways to PYD and the possible moderators. This study aimed to analyze the relationships between internal resources for resilience and PYD and to examine the moderating role of short-term and long-term self-regulation by gender. To reach this overall aim, a cross-sectional study was performed with a national sample of 2700 youths (73.3% girls; Mage = 21.3, SD = 2.79) from Portugal, who completed self-report measures. Regression-based moderation models were developed. Results indicated that greater presence of internal resources for resilience was related to higher PYD. Long-term self-regulation and gender moderated this relationship, such that a greater effect was observed in men with high levels of long-term self-regulation. These results highlight the need to integrate prevention and promotion paradigms to foster healthy development in youth, as well as the importance of taking self-regulation skills and gender into account in program design., The research leading to this publication was co-funded by different partial supports such as the Foundation for Science and Technology (FCT) (Grants: Gina Tomé – SFRH/BPD/108637/2015; Marta Reis – SFRH/BPD/110905/ 2015), WJCR/ISPA, Instituto Universitário; ISAMB, FML/University of Lisbon; FMH/University of Lisbon. This manuscript was performed during a research period in Faculty of Human Kinetics – Universidade de Lisboa, granted by “Becas Iberoamerica Santander Investigacion” to Diego Gomez-Baya.

Resumo Este trabalho pretende analisar os cidadãos que viviam em Portugal durante a pandemia COVID-19 2020/2021, a saúde subjetiva, o risco percebido e a perceção relacionada com o surto, a motivação para a proteção e adoção de comportamentos preventivos, e suas expetativas de futuro. Foram incluídos 225 indivíduos, 81,3% do sexo feminino (18-83 anos; M = 36 anos; DP = 13,42), 49,8% solteiros, e 53,3% empregados. Os dados foram analisados através do software SPSS v. 26 e teste Qui-quadrado. Os resultados mostram que as mulheres se destacam numa maior perceção de probabilidade de infeção, apresentando maior motivação para a proteção e comportamentos como desinfetar o telemóvel. São também, a par dos jovens, quem menos se sente protegido por parte das ações tidas pelas autoridades locais. Com menor perceção de probabilidade de infeção, os jovens foram quem menos aumentou os seus comportamentos de proteção como evitar tocar a face. Semelhantemente aos adultos +55 anos, são quem apresenta expectativas mais positivas do tempo que a situação do país levará a melhorar. As mulheres e grupo 35-44 anos, são quem perceciona maior severidade dos impactos na saúde. Com base nos resultados, espera-se contribuir para o desenvolvimento e adaptação de políticas de saúde pública e de prevenção e promoção da saúde relacionadas com a pandemia, repensando-se a adaptação e desenvolvimento de estratégias de promoção da saúde e bem-estar para grupos-alvo específicos, como os jovens e mulheres.

Mestrado Bolonha em Ciências Empresariais Este trabalho final de mestrado apresenta dois objetivos principais: perceber as motivações dos Millenials na escolha de emprego, entre recompensas financeiras, condições de trabalho e ambiente social; e compreender as perceções desta geração quanto à importância da dimensão das organizações presentes no mercado de trabalho português. Com suporte na literatura existente sobre as gerações presentes no mercado laboral, os atributos preferenciais na procura de emprego e o impacto da dimensão das organizações na escolha de emprego, procurou compreender-se quais os atributos prioritários na escolha do trabalho ideal pelos Millenials, e relacionar essas preferências com a dimensão das organizações e a sua capacidade para satisfazer as exigências planeadas. Foi utilizada uma amostra de 275 pessoas das diversas gerações presentes no mercado laboral português, com idades compreendidas entre os 19 e os 70 anos. Através do SPSS (Statistical Package for the Social Sciences), foram analisados os dados e testadas as hipóteses de investigação, fundamentadas na literatura existente, aproveitando também para comparar os resultados entre as diferentes gerações. Este estudo permitiu concluir que os Millenials dão maior importância às recompensas financeiras do emprego e que acreditam que estas serão mais facilmente correspondidas em grandes organizações; e percebeu-se que os Millenials consideram as grandes organizações como escolha ideal na procura de emprego. Foi também possível compreender que se está a viver uma inversão de tendências quanto à perceção do papel do trabalho na vida, e que o impacto do emprego e a exigência de condições se estão a alterar, verificando-se novas preferências e prioridades na escolha de emprego pelas gerações mais novas face às gerações mais velhas presentes no mercado de trabalho português. This master's final work has two main goals: to understand the Millennials motivations in job search, related to financial rewards, working conditions and social environment, and to understand the perceptions of this generation regarding the size of organizations in the Portuguese labor market. Based on the existing literature, the preferential attributes in job search and the impact of the size of organizations in the choice of employment, we sought to understand which are the priority attributes in the choice of the ideal job by Millenials and relate these preferences to the size of organizations and their ability to meet planned the requirements. It was used a sample of 275 people from different generations present in the Portuguese labor market, aged between 19 and 70 years, was used. Through SPSS (Statistical Package for the Social Sciences), the data were analyzed and the research hypotheses were tested, based on the existing literature, also taking opportunity to compare the results between generations. This study allowed us to conclude that Millennials attach greater importance to the financial rewards of employment and believe that these will be more easily matched in large organizations. It was also felt that the Millenials consider large organizations to be the ideal choice when looking for a job. It was also possible to understand that there is an inversion of trends and mentalities regarding the perception of the role of work in life, and that the impact of employment and the demand for conditions are changing, with new preferences and priorities in the choice of employment by the younger generations, compared to the older generations, present in the Portuguese labor market. info:eu-repo/semantics/publishedVersion

Coupling multiple 1,n-shifts in reactions of biosynthetically relevant carbocations defies previous limits on the concertedness of multiple chemical events., Among the array of complex terpene-forming carbocation cyclization/rearrangement reactions, the so-called “triple shift” reactions are among the most unexpected. Such reactions involve the asynchronous combination of three 1,n-shifts into a concerted process, e.g., a 1,2-alkyl shift followed by a 1,3-hydride shift followed by a second 1,2-alkyl shift. This type of reaction so far has been proposed to occur during the biosynthesis of diterpenes and the sidechains of sterols. Here we describe efforts to push the limits of concertedness in this type of carbocation reaction by designing, and characterizing with quantum chemical computations, systems that could couple additional 1,n-shift events to a triple shift leading, in principle to quadruple, pentuple, etc. shifts. While our designs did not lead to clear-cut examples of quadruple, etc. shifts, they did lead to reactions with surprisingly flat energy surfaces where more than five chemical events connect reactants and plausible products. Ab initio molecular dynamics simulations demonstrate that the formal minima on these surfaces interchange on short timescales, both with each other and with additional unexpected structures, allowing us a glimpse into a very complex manifold that allows ready access to great structural diversity.

This paper presents the research and development of a redesign of Bem-me-ker – an application of the Portuguese Oncology Institute (IPO) of Porto. For this project, we resorted to a user-centric methodology featuring a survey of the current market and the context of the digital health industry, interviews and usability tests with patients, caregivers and stakeholders. Such user-centric methodology proved to be efficient in responding to their needs, with satisfactory results. Its contributions are focused on the incorporation of the concept of patient navigation into the design of an onboarding application, transforming it into a virtual manager of the disease for cancer patients, and with the ultimate goal to improve their wellbeing and quality-of-life. We see that this approach is also capable of being adjusted to the needs of other institutions and patients, thus contributing to the improvement of the national health service, providing digitally optimized information to citizens.

Larval Debridement Therapy consists in placing sterile live larvae into the wound with the goal of removing devitalised and necrotic tissue without adding any trauma. Albeit a decrease in utilizing this therapy, several studies point to the same direction. The main goal is to verify the efficiency of the Larval Debridement Therapy in complex wounds, aiming for an improvement of the standards of care.

Resumen y palabras clave en portugués y en inglés Resumen basado en el de la publicación La adolescencia es un período de importantes transformaciones mentales y orgánicas y una de las estrategias para experimentar emociones negativas es la autolesión. Se investiga la presencia de conductas autolesivas en adolescentes y la asociación entre los síntomas de ansiedad, depresión y la percepción de los adolescentes sobre su relación con sus padres. Este trabajo es parte de un proyecto más amplio, llamado Health Behavior in School-Aged Children (HBSC). El corte tiene como objetivo investigar a los adolescentes de la Región Norte de Brasil (Amazonia). Los instrumentos utilizados fueron el Inventario de Depresión Infantil (CDI), la Escala de Ansiedad Infantil de Spence (SCAS) y el Cuestionario HBSC. La muestra estuvo formada por 507 estudiantes de Rondô-nia, de 13 a 15 años. El análisis de los datos de la investigación se realizó mediante medidas de comparación de media, porcentaje (t-test y chi-cuadrado) y análisis de varianzas. Los resultados muestran que los jóvenes que se autolesionan tienen mayores tasas de depresión y ansiedad y que la falta de percepción de apoyo familiar se correlaciona directamente con la práctica de autolesiones. Una mejor comprensión de la salud mental y emocional en la adolescencia brindará a los adolescentes una mayor acogida relacionada con sus conflictos internos. ESP

Copyright © 2018 IJEHSS - International Journal of Education Humanities and Social Science, A self-administered questionnaire was carried out among young people in Portugal, between the ages of 18 and 24, with the aim to examine determinants influencing condom use at first sexual intercourse, according to the IMB model (Fisher & Fisher, 1992). Young people’s level of information, motivation and behavioral skills regarding preventive sexual behavior (condom use at first sexual intercourse) were ascertained and were used to determine association of condom use at first sexual intercourse. The majority of respondents (78.8%) indicated that they used condom at first sexual intercourse. Most young people had a good level of information regarding HIV/AIDS transmission/prevention. They also showed reasonable positive attitudes, having positive subjective norms and intentions towards HIV/AIDS preventive behaviors. Different models with a path analysis revealed that preventive sexual behavior did not depend directly on information level, nor on motivation, but on behavioral skills. Information and motivation about HIV prevention/ transmission alone were not significantly associated with condom use at first sexual intercourse. The finding that behavioral skills were the strongest determinants of condom use at first sexual intercourse suggested that these may be important factors in effective STIs prevention programs.

Copyright © Society for Science and Education, United Kingdom, The aim of this study was to reach an in-depth understanding on how Portuguese university students feel towards life in general, which are their worries, how often they feel worried, and how intense their worries are. Moreover, it was intended to identify the kind of psychosocial variables involved, strategies they use as well as which are the sources of their well-being. A total of 2991 university students, participated in the quantitative study and in the qualitative study, there were 50 participants between 18 and 35 years old. A significant minority of students got worried frequently, allowing their worries to interfere significantly in their lives. Gender and age differences were found. Having worries demonstrated to be relevant and negatively associated with young people’s perception of well-being, self-regulation and resilience; showing that the mental health of the Portuguese university students is at risk, mainly when their social emotional skills are underdeveloped., Foundation for Science and Technology (FCT) (Grants: Marta Reis-SFRH/BPD/110905/2015)

Saxitoxins (STX) are a group of carbamate alkaloids known to inhibit the axons sodium ion channels, thus affecting the nervous system in vertebrates. These neurotoxins cause paralysis and respiratory failure, ultimately ending in death. They are produced by organisms belonging to two different kingdoms: marine eukaryotic dinoflagellates and freshwater prokaryotic cyanobacteria. The unique biosynthetic pathway, which is responsible for encoding proteins that allow synthesizing and exporting STX, is the cluster sxt, already described in several cyanobacterial species. It has been observed that diverse environmental factors affect differently STX production in cyanobacteria. Among those, temperature is the one that aroused greater interest, since it directly affects cyanobacterial growth rates, however controversial results have been reported. Furthermore, studies on the environmental regulation of STX synthesis and transport are quite rare. In this work, we tested the influence of temperature in two STX producers, Aphanizomenon gracile LMECYA40 and Cuspidothrix issatschenkoi LMECYA31, isolated from Portuguese freshwaters and maintained in the ESSACC. Total STX concentration, the expression of genes linked to STX biosynthesis (sxtA) and transport (sxtM and sxtPer) and the percentage of heterocytes per trichome were determined, in four different phases of cyanobacterial growth (lag, early exponential, late exponential and stationary phases). At 20ºC, a higher expression of the sxt genes and higher production of STX in the late exponential and stationary phase was observed in both species. Also, C. issatschenkoi produced more STX throughout the growth cycle than A. gracile. In A. gracile the percentage of heterocytes per trichome was higher in the lag phase, decreasing along the cell cycle. C. issatschenkoi did not form heterocytes throughout the growth cycle. Further experiments are being performed at 10ºC and 30°C in order to understand the effect of temperatures environmentally relevant in STX producers. info:eu-repo/semantics/publishedVersion

This project is centered in the development of new catalytic processes for Organic Synthesis. Two are the main hypothesis behind it. The first is that the development of new catalytic processes with cheaper, easier to manipulate and more environmentally friendly catalysts which are able to provide controlled selectivity is possible, and that dioxomolybdenum (VI) compounds, gold complexes and Bronsted acids have good potential to meet all these requirements. The second hypothesis is that synergy between experimentation in Organic Synthesis and Molecular Modeling, in introducing elements of design, can result in a more efficient process of catalyst discovery and development and in a deeper understanding of the phenomena that make a catalytic processes possible. We will use the tools of Computational Chemistry to describe the mechanisms involved in a wide set of reactions that can be organized in three sections: 1. Gold catalyzed reactions. We intend to obtain mechanistic information explaining the experimental observations. We will focus on the determination of the key steps in the generation of regio or stereoselectivity in order to explore strategies to control this selectivity and exploit it in synthesis. 2. Dioxomolybdenum (VI) catalyzed oxygen transfer reactions. In this family of catalytic cycles we will identify the catalytically active species, characterize the intermediates involved in the reaction paths and describe the nature of the coupling between the Mo(VI)/Mo(IV) and Mo(IV)/(VI) processes. Special attention will be given to the reduction of sulfoxydes and nitroaromatic compounds with dyols generated from biomass, since these processes can be used to find new applications of the latter or as a strategy of valorisation of these industrial byproducts. 3. New Bronsted-acid catalyzed reactions. We will study the mechanism of the Pictet-Spengler reaction, the basic reactivity in ring closing reactions mediated by nucleophilic substitutions and the formation of benzocarbazoles, we will try to find similarities to gold catalyzed processes in order to explore the possibility that other such reactions will also be accessible in the absence of the metal center. Este proyecto se centra en el desarrollo de nuevos procesos catalíticos aplicados a la Síntesis Orgánica. Dos son las hipótesis de partida en él. La primera es que se pueden desarrollar nuevos procesos catalíticos con catalizadores menos contaminantes, más baratos y fáciles de manejar con una actividad selectiva y completamente controlada, y que los compuestos de dioxomolibdeno (VI), complejos de oro e incluso ácidos de Bronsted tienen un gran potencial para cumplir con todas estas condiciones aún no completamente explorado. La segunda es que la sinergia entre la experimentación en Síntesis Orgánica y la Modelización Molecular, al introducir elementos de diseño, puede resultar en un proceso de desarrollo de nuevos catalizadores más eficiente y en una comprensión más produnda de los fenómenos que hacen un proceso catalítico posible. Emplearemos las herramientas de la Química Computacional para describir los mecanismos implicados en una amplia serie de reacciones que se pueden agrupar en tres bloques: 1. Reacciones catalizadas por complejos de oro. Se pretende obtener información mecanística que explique las observaciones experimentales. Nos centraremos, para ello, en las etapas que pueden generar regio o estereoselectividad para evaluar formas de controlarlas y explotar su potencial sintético. 2. Reacciones de transferencia de oxígeno catalizadas por complejos de dioxomolibdeno (VI). En estas reacciones identificaremos las especies activas en los ciclos catalíticos, los intermedios implicados en los mismos y la naturaleza del acoplamiento entre el proceso Mo(VI)/Mo(IV) y el Mo(IV)/Mo(VI). Prestaremos especial atención a la reducción de sulfóxidos y compuestos nitroaromáticos con dioles obtenidos a partir de biomasa para ampliar su uso como reductores de otros compuestos o como estrategia para valorizar estos residuos. 3. Nuevas reacciones catalizadas por ácidos de Bronsted. Estudiaremos los mecanismos de la reacción de Pictet-Spengler, la reactividad básica de cierres de anillo a través de sustituciones nucleófilas y la formación de benzocarbazoles. A parte de optimizar estos procesos, nos centraremos en buscar similitudes con los procesos catalizados por oro para explorar la posibilidad de que otras reacciones sean accesibles en ausencia del metal. Este proxecto céntrase no desenvolvemento de novos procesos catalíticos aplicados á Síntese Orgánica. Dúas son as hipóteses de partida nel. A primeira é que se poden desenvolver novos procesos catalíticos con catalizadores menos contaminantes, máis baratos e fáciles de manexar cunha actividade selectiva e completamente controlada, e que os compostos de dioxomolibdeno (VI), complexos de ouro e incluso ácidos de Bronsted teñen un gran potencial para cumplir con todas estas condicións ainda non completamente explorado. A segunda é que a sinerxía entre a experimentación en Síntese Orgánica e a Modelización Molecular, ó introducir elementos de diseño, pode resultar no deseño de novos catalizadores máis eficiente e nunha comprensión máis profunda dos fenómenos que fan un proceso catalítico posible. Empregaremos as ferramentas da Química Computacional para describir os mecanismos implicados nunha ampla serie de reaccións que se poden agrupar en tres bloques: 1. Reaccións catalizadas por complexos de ouro. Preténdese obter información mecanística que explique as observacións experimentais. Centraremosnos, para elo, nas etapas que poidan xerar rexio e estereoselectividade para avaliar xeitos de controlalas e inducir o seu aproveitamento sintético. 2. Reaccións de transferencia de osíxeno catalizadas por complexos de dioxomolibdeno (VI). Nestas reaccións identificaremos as especies activas nos ciclos catalíticos, os intermedios implicados nos mesmos e a natureza do acoplamento entre o proceso Mo(VI)/Mo(IV) e o Mo(IV)/Mo(VI). Adicaremos especial atención á redución de sulfóxidos e compostos nitroaromáticos con diois obtidos a partir da biomasa para ampliar o seu uso como redutores doutros compostos como estratexia para valorizar estes residuos. 3. Novas reaccións catalizadas por ácidos de Bronsted. Estudaremos os mecanismos das reaccións de Pictet-Spengler, a reactividade básica de peches de anel a través de substitucións nucleofilas e a formación de benzocarbazois. Ademáis de optimizar estes procesos, centraremosnos en buscar similitudes cos procesos catalizados por ouro para explorar a posibilidade de que outras reaccións sexan posibles en ausencia do metal.

Not using condom and engaging in sexual intercourse under the influence of alcohol or drugs have been long identified as sexual risk behaviours, particularly for adolescents. Participants were 5695 adolescents, of which 46.1% were boys, with a mean age of 15 years old. Most of the adolescents are Portuguese, attend the 8th year, the 10th year or the 12th year. The measures included asking the adolescent whether he or she had already had a romantic relationship, sexual intercourse, age of first sexual intercourse, condom use in last sexual intercourse, sexual intercourse under the influence of alcohol or drug, HIV testing and HPV vaccine. Gender and school years were also analysed. The majority reported having never had sexual intercourse (77.0%). Among those who answered affirmatively, they referred having had their first sexual intercourse at 15 years old. A significant minority reported not having used condom at last sexual intercourse (34.1%) and having had sexual intercourse under the influence of alcohol or drugs (14.5%). It was found that boys are those who use condoms more often, have sexual intercourse associated with the consumption of alcohol or drugs and do not have the HPV vaccine. And the younger boys of the 8th year are those that most often have sexual intercourse associated with the consumption of alcohol or drugs. These results may represent significant changes in educational and health policies, directing these towards the development of personal and social skills, and the activation of all the support structures where adolescents are involved. AIDS related campaigns and sexual education in school context within a health education context must be revitalized., O não uso do preservativo e as relações sexuais associadas ao consumo de álcool ou drogas têm sido desde sempre considerados comportamentos sexuais de risco, em particular para os adolescentes. Participaram 5695 adolescentes, dos quais 46,1% são rapazes, com uma média de idades de 15 anos. A maioria dos adolescentes são portugueses, frequentam o 8º ano, o 10º ano ou o 12º ano. As medidas incluíam perguntar sobre ter relacionamento amoroso, ter relações sexuais, idade da primeira relação sexual, uso do preservativo na última relação sexual, ter relações sexuais associadas ao álcool ou drogas, teste do VIH e vacina do HPV. Analisou-se género e o ano de escolaridade. A maioria mencionou não ter tido relações sexuais (77,0%). De entre os adolescentes que referiram já ter tido, mencionaram ter tido a primeira relação sexual aos 15 anos. Uma minoria significativa reporta não ter usado preservativo na última relação sexual (34,1%) e ter tido relações sexuais associadas ao consumo de álcool ou drogas (14,5%). Verificou-se que são os rapazes que mais frequentemente usam preservativo, têm relações sexuais associadas ao consumo de álcool ou drogas e não têm a vacina do HPV. São os jovens mais novos, do 8º ano, que mais frequentemente têm relações sexuais associadas ao consumo de álcool ou drogas. Estes resultados podem ter implicações significativas na alteração das políticas de educação e de saúde, direcionando-as para o desenvolvimento de competências pessoais e sociais nas várias estruturas que servem de suporte de apoio aos adolescentes portugueses. Necessário reativar as campanhas de SIDA e a educação sexual em meio escolar dentro de um contexto de educação para a saúde., Marta Reis é apoiada pela Bolsa FCT (SFRH/BPD/110905/2015).

Revista de Psicologia da Criança e do Adolescente. - ISSN 1647-4120. - V. 10, n. 2 (2019). - p. 31-50. Dentre os desafios que costumam ser comuns à adolescência, destaca--se o desejo de conhecer os limites da sexualidade. Entende-se que os jovens podem estar suscetíveis a diferentes riscos frente a este desafio. Os comportamentos sexuais de risco incluem relações sexuais sem o uso de preservativos, a multiplicidade de parceiros e a gravidez precoce. Este trabalho teve por finalidade oferecer uma contribuição empírica para a compreensão da sexualidade de adolescentes, investigando a relação entre a percepção do comportamento sexual e a percepção dos adolescentes no que se refere ao seu relacionamento com seus pais. Este trabalho insere-se em um projeto maior, denominado Health Behavior in School-Aged Children (HBSC). O recorte se propõe investigar os adolescentes da Região Norte do Brasil (Amazônia). O instrumento utilizado foi o Health Behavior in School-aged Children (HBSC), sendo este um protocolo que abrange uma gama de indicadores e comportamentos relacionados à saúde. A amostra foi composta de 507 estudantes de ambos os sexos de escolas públicas do estado de Rondônia, de 13 a 15 anos de idade. A análise dos dados da pesquisa foi realizada por meio de medidas de comparação (teste qui-quadrado). Os resultados apontaram que os jovens que já iniciaram a sua vida sexual percebem que pais sabem pouco das suas vidas. Aumentar habilidades para tomada de decisão e promover a comunicação com os pais pode contribuir significantemente para que estimule a saúde e bem-estar dos jovens brasileiros. Among challenges common to adolescents, desire to explore sexuality limints stands out. Young people may be susceptible to different risks facing this challenge. Sexual risk behaviors include intercourse without condoms, multiplicity of partners, and early pregnancy. The purpose of this study was to provide an empirical contribution to the understanding of adolescent sexuality, investigating the relationship between adolescents’ perception of sexual behavior and their relationship with parents. This work is part of a larger project called Health Behavior in School-Aged Children (HBSC). Scope is proposed to investigate adolescents of Northern Region of Brazil (Amazon). Instrument used was the Health Behavior in School-aged Children (HBSC), a protocol that covers a range of indicators and behaviors related to health. Sample consisted of 507 students of both sexes from public schools in the state of Rondônia, aged 13 to 15 years. Research data analysis was performed by comparison measures (chi-square test). Results indicated that young people who have already started sexual life realize that parents know little about their lives. Increasing decision-making skills and promoting communication with parents can contribute significantly to stimulate health and well-being of Brazilian youth.