Dinâmica espaço-temporal de Rhopalosiphum padi e disseminação de BYDV-PAV - calibração do modelo ABISM utilizando microparcelas.

Orientador: José Maurício Cunha Fernandes

Dinâmica espaço-temporal de Rhopalosiphum padi e disseminação de BYDV-PAV.

Orientador: Douglas Lau

A new experimental snow avalanche test site at Seehore peak in Aosta Valley (NW Italian Alps) - Part II: Engineering aspects

The estimate of the effects produced by the impact of a snow avalanche against an obstacle is of the utmost importance in designing safe mountain constructions. For this purpose, an ad-hoc instrumented obstacle was designed and built in order to measure impact forces of small and medium snow avalanches at Seehore peak (NW Italian Alps). The structural design had to consider several specific and unusual demands dictated by the difficult environment. In this article, the new test facility is described from the engineering point of view, discussing the most important aspects of the analyzed problems which were solved before and after the construction. The performance of the instrumented obstacle in the first two operating seasons, and some proposals for future upgrading are eventually illustrate

Prevalence and factors associated with the consumption of fruit and vegetables by adolescents in public schools in Caruaru, Pernambuco state

Title, Abstract and Keywords in Português and English only. Title without diacritics: Prevalencia e fatores associados ao consumo de frutas, legumes e verduras entre adolescentes de escolas públicas de Caruaru, PETrata-se de um estudo transversal de base escolar que avaliou a prevalência e fatores associados ao consumo diário de frutas, legumes e verduras (FLV) entre adolescentes de escolas públicas de Caruaru (PE). Para avaliar os fatores associados ao consumo diário de FLV, realizou-se análise multivariável e hierarquizada, por regressão de Poisson, com variáveis sociodemográficas no primeiro nível, comportamentais no segundo e alimentares no terceiro. Os resultados mostraram que, dos 600 adolescentes entrevistados, 10% informaram não consumir frutas e 30,7% não consomem legumes/verduras. A prevalência de consumo diário de frutas foi 32,9% e de legumes/verduras 29%. Apenas 6,5% dos adolescentes consomem ambos os alimentos diariamente. Somente o consumo diário de legumes/verduras apresentou diferença segundo sexo (maior nas meninas). O consumo diário de frutas foi 63% maior entre residentes da zona urbana. Não ingerir álcool esteve associado com maior consumo de frutas, mas não com o de legumes/verduras. O consumo diário de frutas e legumes/verduras foi 2,4 vezes maior entre adolescentes que consomem arroz e feijão diariamente. O consumo diário de FLV entre adolescentes caruaruenses é inferior ao recomendado, estando associado ao sexo, zona de residência, consumo de álcool e de arroz e feijão. = This is a cross-sectional school-based study that evaluated the prevalence and associated factors of the daily intake of fruit and vegetables by adolescents at public schools in Caruaru, Pernambuco. Poisson regression with a hierarchical model, including sociodemographic variables in the first hierarchical level, behavioral variables in the second and diet-related variables in the third was used to assess the factors associated with fruit and vegetable intake. The results showed that of the 600 adolescents interviewed, 10% reported never eating fruit and 30.7% mentioned not eating vegetables. Prevalence of fruit intake was 32.9% and vegetables 29.0%. Only 6.5% reported eating both kinds of food daily. Merely the daily vegetable intake showed a significant difference according to sex (higher among girls). Daily fruit intake was 63% higher among adolescents living in urban areas. Not consuming alcohol was associated with higher fruit intake, though not to vegetable intake. Daily intake of fruits and vegetables was 2.4 times higher among adolescents who consumed rice and beans daily. Daily fruit and vegetable intake among adolescents in Caruaru is below the recommendations, and was associated with gender, residence area, consumption of alcoholic beverages and consumption of rice and beans.Ludmila Correa Muniz, Roberta de Vargas Zanini, Bruna Celestino Schneider, Rafael Miranda Tassitano, Wallacy Milton do Nascimento Feitosa, David Alejandro González-Chic

Parity Violation in Neutron Resonances in 107,109Ag

Parity nonconservation (PNC) was studied in p-wave resonances in Ag by measuring the helicity dependence of the neutron total cross section. Transmission measurements on natural Ag were performed in the energy range 32 to 422 eV with the time-of-flight method at the Manuel Lujan Neutron Scattering Center at Los Alamos National Laboratory. A total of 15 p-wave neutron resonances were studied in 107Ag and ninep-wave resonances in 109Ag. Statistically significant asymmetries were observed for eight resonances in 107Ag and for four resonances in109Ag. An analysis treating the PNC matrix elements as random variables yields a weak spreading width of Γw=(2.67-1.21+2.65)×10-7 eV for107Ag and Γw=(1.30-0.74+2.49)×10-7 eV for 109Ag

Innate immunity but not NLRP3 inflammasome activation correlates with severity of stable COPD

Background In models of COPD, environmental stressors induce innate immune responses, inflammasome activation and inflammation. However, the interaction between these responses and their role in driving pulmonary inflammation in stable COPD is unknown. Objectives To investigate the activation of innate immunity and inflammasome pathways in the bronchial mucosa and bronchoalveolar lavage (BAL) of patients with stable COPD of different severity and control healthy smokers and non-smokers. Methods Innate immune mediators (interleukin (IL)-6, IL-7, IL-10, IL-27, IL-37, thymic stromal lymphopoietin (TSLP), interferon γ and their receptors, STAT1 and pSTAT1) and inflammasome components (NLRP3, NALP7, caspase 1, IL-1β and its receptors, IL-18, IL-33, ST2) were measured in the bronchial mucosa using immunohistochemistry. IL-6, soluble IL-6R, sgp130, IL-7, IL-27, HMGB1, IL-33, IL-37 and soluble ST2 were measured in BAL using ELISA. Results In bronchial biopsies IL-27+ and pSTAT1+ cells are increased in patients with severe COPD compared with control healthy smokers. IL-7+ cells are increased in patients with COPD and control smokers compared with control non-smokers. In severe stable COPD IL-7R+, IL-27R+ and TSLPR+ cells are increased in comparison with both control groups. The NALP3 inflammasome is not activated in patients with stable COPD compared with control subjects. The inflammasome inhibitory molecules NALP7 and IL-37 are increased in patients with COPD compared with control smokers. IL-6 levels are increased in BAL from patients with stable COPD compared with control smokers with normal lung function whereas IL-1β and IL-18 were similar across all groups. Conclusions Increased expression of IL-27, IL-37 and NALP7 in the bronchial mucosa may be involved in progression of stable COPD