Variabilidade de parâmetros eletromiográficos e cinemáticos em diferentes condições de marcha em idosos

The main goal of this study was to investigate the influence of fear of fall and dual task on electromyographic and kinematic variability parameters on the gait of older females. Seventeen college students (21,47 ± 2,06 years old) and eighteen older female adults, both groups were physically fit and performed the gait test on three different conditions: walking at self-select speed, fear of fall and dual task. Electromyographic activity was measured on muscles of dominant leg and stride time was recorded. ANOVA two-way (p<0.05) was used. Electromyographic and kinematic gait variability were higher in older adult groups. However, for the comparison between gait conditions was only found significant difference for electromyographic variability. In line with this, the higher EMG and kinematic variability in older adults suggest that aging contributes for a higher motor challenge while walking, which may be predispose these individuals a higher risk of fall.

Índice de área foliar e produtividade do tomate sob condições de ambiente protegido

The tomato cultivation in the greenhouse has been expanded in the last years, mainly, in the South and Southeast regions of Brazil, whose purpose is to improve the productivity and the quality of the agricultural products, offering regularity in the production. The present study aimed to determine, along the crop cycle, the relationship between the leaf area index and the productivity, and at the end of the cycle, the components of production of the tomato in the greenhouse. The models were generated through polynomial equations of 1st and 2nd order, having as independent variable the number of days after the transplanting. It was verified that it is possible to determine, in the greenhouse, through mathematical models, the leaf area index of the tomato crop considering the days after the transplanting. Basing on values of leaf area index, the productivity of the crop and the period of the maximum productivity can be determined, aiding the farmers to determine the best sowing and transplanting time of the tomato crop.

Variação entre a lâmina de irrigação aplicada e armazenada no solo sob condições de irrigação com baixa uniformidade de distribuição de água

In sprinkler irrigation is important to have a good uniformity of application so that the water in the root zone does not show areas with little available water while others have percolating beyond the plant roots, even though the soil allows a lateral redistribution of water. A usual way to obtain the uniformity of irrigation is by measures of dispersion. The aim of this work was to evaluate the uniformity of water stored in a sand soil before and after non uniformity depth irrigation applied from one sprinkler, as well the variation of storage in a 0-0,45 m layer soil using a neutron probe. The statistical design was completely randomized, and for the variable Christiansen uniformity coefficient modified (CUCHH) were 10 treatments (the irrigation depth, 8 intervals of readings storage, more the existing one before irrigation added to the irrigation depth). For the variable soil water, the treatments were the same, excepting the irrigation depth. Despite the low surface uniformity (16.3%), there was not significantly difference between the storage uniformity before, after irrigation and the potential, however there was from these to the surface uniformity. From de irrigation depth, 15.3 mm, only 6.1 mm remained in the layer from 0 to 0.45 m. There was not significantly difference between the water stored in the soil before and after irrigation within a period of up to 134 hours, being the increase in storage due to irrigation was just 11.7%.

Qualidade física de ovos armazenados em diferentes condições de embalagens sob temperatura ambiente

The objective was to evaluate the internal quality of white-shelled consume eggs, sanitized or not, stored under different packaging conditions at room temperature. It was used 300 eggs, distributed in a completely randomized experimental design in a 3×2×4+1 factorial arrangement, three packaging conditions (PVC film, partial vacuum, partial vacuum with oxygen gas absorber), storage period (7, 14, 21 and 28 days), sanitized or not, and control (fresh eggs), with four repetitions. At the end of each period the analysis were performed. Partial vacuum condition was able to maintained Haugh unit, and promoted the best results for yolk index. The weight maintenance was better when packaged under vacuum, with or without O2 sachets absorbers. Lower values of water activity were obtained in eggs packed in PVC film, and when the sanitation was performed. It can be concluded that the internal egg quality decreases with storage time sharper in the eggs packed in PVC film, because vacuum has preserved some features of them. With sanitation, the storage conditions of eggs in PVC film should be improved because its internal quality decrease was greatest.

Efeito da suplementação de betaína em dietas de frangos de corte em condições de termoneutralidade

The aim of this study was to evaluate the effect of inclusion of betaine in broiler diets on performance and intestinal morphology of broilers during periods 1 to 7 and 8 to 21 days old. Were used 1,408 Cobb male broiler, randomly assigned into 4 treatments with 16 replicates of 22 birds in environmental chambers. The treatments were: i) positive control - diet formulated according to the nutritional requirements of the birds; ii) negative control - with reduction levels of methionine and choline; iii) negative control + 0.092% supplementation of betaine in substitution of methionine and total choline; iv) negative control + 0.1% supplementation of natural betaine to replace partial methionine and total choline. Were evaluated feed intake, weight gain and feed conversion at 7 and 21 days old. At 25 days were evaluated crypt height and depth of jejunum. The results were analyzed by ANOVA and mean comparison test. The results obtained with the supplementation of betaine in the feed only demonstrated a positive effect on feed consumption during 1 to 7 days, and villous height of the jejunum in the period of 8 to 21 days. Supplementation of 0.1% betafin (96% natural betaine) in the diet provided significant improvements in the morphological characteristics of the small intestine of broilers.

Eficiência de herbicidas inibidores da ALS e PROTOX sob condições de déficit hídrico no comportamento bioquímico de plantas daninhas

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Avaliação de híbridos de mamona de porte baixo em espaçamento reduzido em condições de safrinha

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Criminalidade urbana e condições de vida na região administrativa de Campinas (SP) no ano de 2000: uma análise espacial

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Biologia reprodutiva e qualidade do sêmen de reprodutores de curimbatá, Prochilodus lineatus, em condições distintas de manejo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Crescimento das macrófitas aquáticas flutuantes Pistia stratiotes e Salvinia molesta em diferentes condições de temperatura e fotoperíodo

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Projeto de reguladores fuzzy Takagi-Sugeno utilizando as condições iniciais da planta

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise da máquina de indução trifásica através das grandezas de Buchholz-Goodhue aplicando os vetores espaciais instantâneos nas condições de desequilíbrio e distorção conforme a IEEE 1459-2000

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise de variáveis biomecânicas e do risco de quedas de indivíduos idosos submetidos a diferentes condições de marcha

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Capacidade funcional, composição corporal e condições de saúde de idosos longevos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Ecologia termal da jararaca-ilhoa, Bothrops insularis (Serpentes, Viperidae): um estudo em condições naturais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)