RESUMO A forma como uma família funciona pode influenciar o modo como os adolescentes regulam as suas próprias emoções. Assim, este estudo visa analisar a relação entre o funcionamento familiar e a regulação emocional na adolescência. A amostra foi constituída por 625 adolescentes de ambos os sexos (entre os 15 e os 20 anos de idade). Os resultados revelaram que os adolescentes do ensino profissional e do sexo masculino percecionam pior comunicação na família e maiores dificuldades familiares, e, genericamente, os adolescentes do sexo masculino percecionam maiores dificuldades na regulação emocional do que os adolescentes do sexo feminino. Os resultados sugerem, ainda, um efeito preditor entre o funcionamento familiar e a regulação emocional na adolescência. Parece, pois, necessário trabalhar com as famílias e adolescentes, com o objetivo de incrementar competências, e deste modo melhorar a sua regulação emocional. Este estudo assume relevância, pelas potenciais implicações para a intervenção com adolescentes e suas famílias.

ABSTRACT The way a family works can influence how teenagers regulate their own emotions. Thus, this study aims to analyze the relationship between family functioning and adolescent emotional regulation. The sample consisted of 625 adolescents of both genders (between 15 and 20 years of age). The results revealed that professional and male adolescents perceive worse communication in the family and more significant family difficulties. In general, male adolescents perceive greater difficulties in emotional regulation than female adolescents. The results also suggest a predictive effect between family functioning and emotional regulation in adolescence. Therefore, it seems necessary to work with families and adolescents to increase skills, thus improving their emotional regulation. This study assumes relevance due to the potential implications for the intervention with adolescents and their families.

ABSTRACT Chagas disease (CD) is caused by the protozoan Trypanosoma cruzi and it is mainly acquired through the vector route, however, blood transfusion and congenital transmission are implicated in the spread of the illness worldwide. The congenital route can occur at any stage of pregnancy and its frequency varies. In the Federal District, in Brazil, the frequency of T. cruzi infection in pregnant women and their offspring has not been updated. Thus, the aim of this study was to estimate the prevalence of T. cruzi infection in pregnant women and the rate of congenital transmission in the Federal District. A cross-sectional study was conducted to estimate the seroprevalence of T. cruzi from 2014 to 2016 in the population of pregnant women attended by the public health service throughout the Federal District and a descriptive cohort for the evaluation of congenital transmission. During the study, prenatal data of 98,895 women were consulted and pregnant women registered in 2016, presenting with positive T. cruzi serology, were part of the descriptive cohort. The estimated prevalence of T. cruzi infection in the three years was 0.19% and the congenital transmission rate was 1/40 (2.5%). Our results have shown that, although the main routes of transmission of CD have been interrupted, there is still a risk of congenital transmission in the Federal District. This present study highlights the need for the continuous implementation of a screening program for pregnant women and timely treatment of infected newborns and children.

Óleos de copaíba são importantes produtos naturais que têm sido amplamente utilizados por suas atividades cicatrizantes e anti-inflamatórias. Constituídos de sesquiterpenos e diterpenos, estes óleos apresentam composição química variável que, segundo a literatura pode ser originada por diversos fatores bióticos e abióticos. Com o objetivo de analisar a relação entre a composição química e fatores abióticos como sazonalidade, diâmetro à altura do peito (DBH) e composição do solo, dezesseis amostras de óleo-resina de Copaifera multijuga Hayne, provenientes da Reserva Florestal Ducke (Manaus-AM, Brasil), foram analisadas por cromatografia gasosa com detector de ionização de chama (GC-FID) e acoplada à espectrometria de massas (GC-MS). Trinta e cinco substâncias foram identificadas e os resultados avaliados por técnicas de análise multivariada (análises de agrupamento hierárquico (HCA) e a análise de componentes principais (PCA)), permitindo a diferenciação das amostras em dois grupos com composições distintas. Um deles apresentou como substância majoritária b-cariofileno enquanto o outro apresentou o óxido de cariofileno, essa variação na composição parece depender do tipo de solo. Outros fatores, anteriormente descritos como essenciais para a definição da composição química dos óleos de copaíba, como sazonalidade e DBH, não mostraram influência significativa sobre a composição química dos óleos-resina desta espécie.

Copaiba oils are important medicinal products used primarily for their healing and anti-inflammatory activities. Consisting of sesquiterpenes and diterpenes, these oils have variable composition which, according to the literature, may originate from several factors. In order to analyze the relationship between chemical composition and abiotic factors such as seasonality, diameter at breast height (DBH) and soil composition, sixteen of oilresin samples of Copaifera multijuga Hayne, from the Ducke Forest Reserve (Manaus City, Amazon State, Brazil), were analyzed by gas chromatography with flame ionization detection (GC-FID) and coupled with mass spectrometry (GC-MS). Thirty-five compounds were identified and the results evaluated by multivariate analysis (hierarchical cluster analysis (HCA) and principal component analysis (PCA)), allowing differentiation of the samples into two groups with different compositions. One of them presented β-caryophyllene as the major constituent, while the other presented caryophyllene oxide. This variation in composition appears to depend on soil type. Other factors previously described as essential for defining the chemical composition of copaiba oils, such as seasonality and DBH, showed no significant influence on the chemical composition of oils of this species.