Resumo A pandemia e a inerente alteração de comportamentos, a par da parca previsibilidade, geraram maior ansiedade na população. Nesse sentido, este trabalho teve como objetivo analisar se os níveis de depressão, ansiedade e estresse em estudantes universitários se alteraram no período pandêmico (2020) comparativamente a períodos anteriores/normais. O estudo foi constituído por dois grupos, sendo a amostra 1 constituída por 460 sujeitos com idade média de 20,14 anos, e a amostra 2 por 159 sujeitos com idade média de 20,40 anos. Todos preencheram um questionário sociodemográfico e as escalas de ansiedade, depressão e estresse. Os estudantes que integraram o estudo no período pandêmico apresentaram níveis significativamente mais elevados de depressão, ansiedade e estresse comparativamente aos que integraram o estudo no período normal. Os resultados sugerem um impacto psicológico negativo da pandemia nos estudantes. Importa continuar a explorar as implicações da pandemia na saúde mental dos estudantes, para que se possam prevenir e minorar os seus efeitos.

Drought is a major environmental constraint affecting growth and production of coffee. The effects of water supply on growth, biomass allocation, water relations, and gas exchange in two coffee progenies representing drought-tolerant (Siriema) and drought-sensitive (Catucaí) genotypes were compared. They were grown in 12-L pots until 4-months old, when they were submitted to two watering treatments for 60 d: plants receiving either 100% transpired water (control plants) or a fraction (about 40%) of the amount of water transpired by control plants (drought-stressed plants). Under control conditions, Siriema grew faster than Catucaí. Regardless of the watering regimes and progenies, relative growth rate (RGR) was positively correlated both with net assimilation rate (NAR) and long-term water-use efficiency (WUE), but not with differences in biomass allocation. Both progenies responded to drought stress through (i) similar decreases in both RGR and NAR with marginal, if any, changes in allocation; (ii) decreases in leaf water potential, which occurred to a greater extent in Catucaí than in Siriema, even though they have showed similar abilities to adjust osmotically and elastically; (iii) similar reductions in net photosynthesis due mainly to nonstomatal factors; and (iv) decreases in transpiration rate coupled with increased long-term WUE. However, the lower transpiration rate and the higher long-term WUE as found in Siriema relative to Catucaí under control conditions persisted under drought conditions. Overall, the major differences between these progenies were largely associated with differences in plant water use, which was likely related to the improved water status of Siriema. The possible implications of selecting coffee genotypes for high WUE are discussed.

Federal do Espírito Santo, objetivando avaliar tratamentos para acelerar a germinação e reduzir a deterioração de sementes de Ormosia nitida. Foram conduzidos dois experimentos em delineamento inteiramente casualizado, com quatro repetições. No primeiro estudo, feito em papel substrato, os tratamentos foram sementes intactas, escarificação mecânica e escarificação química com H 2 SO 4 durante 10 min. No segundo estudo feito em placas de Petri, os tratamentos utilizados foram sementes intactas (controle); escarificação mecânica; escarificação mecânica + pré-embebição por 24 horas; H 2 O 2 no substrato; e escarificação química com H 2 SO 4 durante 1, 5, 10,15, 20, 25 e 30 min. Foram avaliados o vigor, através do índice de velocidade de germinação, e a germinação, através da porcentagem de plântulas normais. A todos os tratamentos pré-germinativos foram apresentados respostas positivas na porcentagem e velocidade de germinação em relação ao controle. A escarificação mecânica e o H 2 O 2 no substrato proporcionaram aumento significativo na velocidade e porcentagem de germinação das sementes, com redução da deterioração. Palavras-chave: Ormosia nitida, capacidade germinativa, vigor e dormência. ABSTRACT -The experiment was carried out at the Seed Laboratory of the Agronomy Center of the FederalUniversity of Espirito Santo, in order to attain acceleration of germination and reduce seed deterioration in Ormosia nitida Vog.. A completely randomized experimental design with four replications was used. In experiment I, with paper substratum, the treatments were intact seeds (control); mechanical scarification and sulfuric acid soaking for 10 minutes. In experiment II, in Petri dishes, the treatments were intacts seeds (control); mechanical scarification; mechanical scarification + soaking in water at 35ºC for 24 hours; imbibition of germination substratum with H 2 O 2 ; sulphuric acid soaking for 1; 5; 10; 15; 20; 25 and 30 minutes. The results showed higher synchronization and speed germination in treatments with mechanical scarification, sulphuric acid for 10 minutes and H 2 O 2 in the substratum.

Limitations to photosynthesis were explored in leaves from four canopy positions of field-grown, unshaded coffee (Coffea arabica L.), a tropical tree species classified as shade-obligatory. Overall, compared to shade (lower) leaves, sun (upper) leaves had higher net carbon assimilation rate (A) (4.5 against 2.0 micromol m(-2)s(-1) at most) associated with higher electron transport rate (due to a greater irradiance availability) but unrelated to stomatal and mesophyll conductances, which were similar regardless of leaf position. Neither physiological variable directly involved with photosynthetic carbon gain nor those involved with light capture were able to adjust themselves to match the capacity of the photosynthetic machinery to the light supply. We concluded that: (i) there was no major difference in photosynthetic capacity between sun and shade leaves; (ii) the intrinsic low A in coffee was greatly associated with remarkable low diffusive limitations rather than with biochemical or photochemical constraints; and (iii) morphological (e.g., variations in specific leaf area and leaf inclination) or anatomical plasticity should be of greater acclimative value than physiological plasticity as a mean of coffee leaves to respond to changing irradiance.

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The main goal of this study was to explore the mediating role of self-regulation in the relationship between protective factors and resilience. The sample was composed of 393 adolescents who attended secondary education. Participants were assessed using the Healthy Kids Resilience Assessment to collect information about four protective factors-school, home, community and peer environment-and resilience. Two dimensions of self-regulation-goal setting and impulse control-were assessed using the Short Self-Regulation Questionnaire. The results indicated that home, community and peer environment predicted significantly the levels of resilience of the students. Home environment was the main resilience predictor. Goal setting and impulse control abilities were also predictors of resilience but no evidence was found for a mediating effect of the self-regulation dimensions on the relationship between protective factors and resilience. Results are discussed and implications for prevention from a developmental perspective are presented.

Background: Emotion dysregulation is a unifier dimension of several psychopathological symptoms thus an instrument that measures it is needed. Objectives: To adapt to Portuguese the Difficulties in Emotion Regulation Scale and study its psychometric qualities. A second goal was to explore the association between DERS dimensions and specific types of psychopathology symptoms. Method: The original measure was translated to Portuguese and completed by a sample of 324 individuals who also completed the Brief Symptom Inventory. Results: The results show a very similar factor structure to the original measure: good testretest stability, very good internal consistency (Cronbach's α = ,93) and good external validity with BSI. The analysis performed with the subset of 115 individuals that composed the clinical sample showed that psychopathologic individuals present more difficulties in emotion regulation than normal individuals. Through the correlation analysis between the different DERS and BSI subscales, we found that the Strategies and Goals subscales present the highest level of association with all the psychopathological symptoms. Discussion: This may suggest that these two dimensions are present in various psychological disorders and could, therefore, be included in psychological interventions focused on emotion regulation skills.

Student engagement is an emergent research domain in educational psychology, as research increasingly supports the connection between academic achievement, school-related behaviours, and student engagement. In spite of the important role of student engagement in academic achievement across cultures, little is known about the cross-cultural validation of the factorial structure of students’ school engagement instruments. This study explores the psychometric properties of The Student Engagement Instrument (Appleton & Christenson, 2004) in a population with a culture different from that in which the original version was developed and validated. The participants were 760 high school Portuguese students. Results confirm the factorial structure of the original version and reinforce the empirical support for a six-factor structure. However, some items loaded in different subscales, raising questions about the cultural specificities of the student engagement construct.