1000 resultados para Modelos de separação de efeitos
Resumo:
Urban sprawl developed without adequate urban planning and lack of knowledge about the physical characteristics of an environmental system, results in soil sealing and consequent change in the dynamics of hydrological watershed. Thus, this study aimed to analyze the behavior of the runoff basin Cóorego DA Servidão located in Rio Claro, referring to the year of 1995 compared to the scenario of 2006, compared the different features of urban use logged area. Therefore understanding the dynamics of the flow was possible through the use of software IPHS 1 that allowed through hydrologic models to evaluate the behavior of the surface area investigated, using Spring 4.3.3 software which enabled the classification of land use and software ArcGis 9.3 which was used for the quantification of stretches of water, separated from those that are channeled and those who did not suffer interference from the pipe
Resumo:
Medo e a ansiedade são emoções que têm origem nas reações de defesa que os animais exibem diante de ameaças que podem comprometer sua integridade fÃsica ou a própria sobrevivência, tais como confrontos com o predador ou com animais da mesma espécie. Em se tratando da espécie humana, estas respostas defensivas eliciadas representariam a ocorrência de transtornos de ansiedade e, a busca por sua compreensão, resultou no desenvolvimento de modelos animais de ansiedade, dentre os quais se destaca o labirinto em cruz elevado (LCE) que é baseado na aversão natural de roedores a espaços abertos. Com relação aos substratos neurais envolvidos nestas manifestações, cabe destacar a matéria cinzenta periaquedutal bem como estruturas prosencefálicas, como o córtex pré-frontal (CPFm), uma estrutura lÃmbica que tem sido frequentemente descrita como relevante na neurobiologia da ansiedade. O óxido nÃtrico (NO) tem sido investigado em diferentes estruturas cerebrais de roedores nas quais foram evidenciadas respostas pró-aversivas. Sendo o CPFm uma estrutura que contém neurônios nitrérgicos, este estudo teve o objetivo de investigar o efeito da facilitação nitrérgica através da injeção intra-CPFm de um doador de NO, o NOC-9 [6-(Hidroxi-1-metil-2-nitrosohidrazino)-N-metil-1-hexanamina], sobre o comportamento de camundongos expostos ao labirinto em cruz elevado (LCE). Métodos e Resultados: Camundongos SuÃços machos (25-35g, n = 53) receberam implante de cânula guia no CPFm. Cinco dias após, os animais receberam microinjeção de veÃculo ou NOC-9 nas doses de (1,875 nmol; 18,75 nmol; 37,5 nmol ou 75nmol) e, após cinco minutos, foram expostos... (Resumo completo, clicar acesso eletrônico abaixo)
Resumo:
Pós-graduação em Cirurgia Veterinária - FCAV
Resumo:
Pós-graduação em Agronomia (Produção Vegetal) - FCAV
Resumo:
Coordenação de Aperfeiçoamento de Pessoal de NÃvel Superior (CAPES)
Resumo:
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Resumo:
Coordenação de Aperfeiçoamento de Pessoal de NÃvel Superior (CAPES)
Resumo:
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Resumo:
Exercise physiology has attempted to reproduce the experimental exercise in the laboratory using mainly rats. The swimming exercise has emerged as one of the leading research in these type ergometers. Thus, this research consisted of a literature review addressing the key issues which involve the exercise of swimming in the model rats. Training of aerobic and anaerobic swimming, evaluation models and models of periodization were the topics suggested in this research. In several studies, models of aerobic and anaerobic training have been proposed with the aim of studying their effect on normal and abnormal physiological parameters. However, earlier studies lacked methods of analysis aiming to determine the exercise intensity in the animal model. For this reason, in the last decade, assessment models have been adapted for humans to animals, especially rats. The maximal lactate steady state (MLSS) and lactate minimum (LM) are among the various techniques used to measure the amount of effort produced by swimming exercise in rats. Thereafter, based on biochemical parameters such as lactate, swimming exercise in rats has become the highest-rated, ie, using as reference the anaerobic threshold (AT). In another aspect, an entirely new line of research has tried to understand and promising swimming training in a periodized and its effects on some biochemical parameters. But this is an area little researched so far. Thus, the experimental model of swimming has proved an important resource of exercise physiology. From this model, it becomes possible to study the exercise, especially swimming, in more accurate, based on invasive and incisive analysis of the rat
Resumo:
The objective of this work was to determine the load support capacity (LSC) of an Oxisol and, through compressibility models, relate it to wheel-soil interactions under management systems with one and three sugarcane crop cycles, with mechanized harvest. LSC evaluations were carried out on undisturbed soil samples, collected at planting row and bed, in four layers: 0.00-0.10, 0.10-0.20, 0.20-0.30, and 0.300.40 m. The contact area between wheels and soil was determined in order to estimate the contact pressure by agricultural machinery on the soil. Pre-consolidation pressures were used to determine LSC. The system with three cycles showed higher LSC than the system with only one cycle. The load support capacity of the soil evaluated in the range of friability is greater than the contact pressures applied to the soil by the wheels of the studied agricultural machines.
Resumo:
A total of 3.035 lactations of Holstein cows from four farms in the Southeast, to check the influence of data structure of milk yield on the genetic parameters. Four dataset with different structures were tested, weekly controls (CW) with 122.842 controls, monthly controls (CM) 30.883, bimonthly controls (CB) with 15,837 and quarterly controls (CQ) with 12,702. The random regression model was used and was considered as random additive genetic and permanent environment effects, fixed effects of the contemporary groups (herd-year-month of test-day) and age of cow (linear and quadratic effects). Heritability estimates showed similar trends among the data files analyzed, with the greatest similarity between dataset CS, CM and CB. The dataset submitted all the CB estimates of genetic parameters analyzed with the same trend and similar magnitude to the CS and CM dataset, allowing the claim that there was no influence of the data structure on estimates of covariance components for the dataset CS, CM and CB. Thus, milk recording could be accomplished in a CB structure.
Resumo:
Coordenação de Aperfeiçoamento de Pessoal de NÃvel Superior (CAPES)
Resumo:
Coordenação de Aperfeiçoamento de Pessoal de NÃvel Superior (CAPES)
Resumo:
Apesar de pouco explorado, a prática de atividade fÃsica promove redução da Pressão Intraocular (PIO). O objetivo foi verificar o efeito de diferentes tipos de exercÃcio na PIO. Quinze voluntários foram submetidos a 3 sessões de 30min de exercÃcios resistidos (3 x 8 repetições a 80%1RM), aeróbio contÃnuo (60% da Frequência CardÃaca de Reserva [FCR]), aeróbio intervalado (2min a 50% alternando com 1min a 80% da FCR). PIO foi mensurada antes (M1), durante (M2-15min), imediatamente após a sessão (M3) e na recuperação (5min [R1] e 10min [R2]). Como procedimento estatÃstico foi utilizado ANOVA. Houve redução da PIO nas 3 sessões de exercÃcio (M2 e M3). Na recuperação, PIO permaneceu reduzida após 5min (R1) em todos os modelos. Porém, aos 10min (R2) estava menor que M1 apenas na sessão de exercÃcio intervalado. Os resultados sugerem que o exercÃcio intervalado é mais efetivo que o contÃnuo e resistido na redução da PIO.
Resumo:
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)