O educador matemático em proclo

Pós-graduação em Educação Matemática - IGCE

Euclid and his modern rivals (1879), Lewis Carrol: tradução e crítica

Pós-graduação em Educação para a Ciência - FC

Pedras perdidas: o decadentismo e a visão pós-colonial de Gastão Cruls

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

As imagens infernais em Os Sertões e Ensaio sobre a Cegueira: uma leitura mitopoética

Pós-graduação em Estudos Literários - FCLAR

A structure-activity relationship (SAR) study of neolignan compounds with anti-schistosomiasis activity

Um conjunto de dezoito compostos de neolignanas com atividade antiesquistossomose foi estudado com o método semi-empírico PM3 e outros métodos teóricos com o intuito de avaliar algumas propriedades (variáveis ou descritores) moleculares selecionadas e correlacioná-las com a atividade biológica. Análise exploratória dos dados (análise de componentes principais, PCA, e análise hierárquica de agrupamentos, HCA), análise discriminante (DA) e o método KNN foram utilizados na obtenção de possíveis correlações entre os descritores calculados e a atividade biológica em questão e na predição da atividade antiesquistossimose de algumas moléculas teste. Os descritores moleculares responsáveis pela separação entre os compostos ativos e inativos foram: energia de hidratação (HE), refratividade molecular (MR) e carga sobre o átomo C19 (Q19). Estes descritores fornecem informações a respeito do tipo de interação que pode ocorrer entre os compostos e seu respectivo receptor biológico. Após a construção do modelo para compostos ativos e inativos, os métodos PCA, HCA, DA e KNN foram empregados em um estudo de predição. Foram estudados 10 novos compostos e somente 5 deles foram classificados como ativos contra esquistossomose.

A questão regional e a formação do discurso desenvolvimentista na Amazônia

Este trabalho de tese trata de um estudo sobre a formação histórica discursiva sobre a questão regional amazônica e sua relação com o período nacional-desenvolvimentista no Brasil. Em sua primeira parte, o estudo apresenta os objetivos e a fundamentação teórico-metodológica do trabalho, baseada no método arqueogenealógico de Michel Foucault e na teoria de ideologia de Paul Ricoeur. Em seguida o estudo apresenta as bases históricas e conceituais da formação do ciclo ideológico do desenvolvimentismo no Brasil, assim como os fundamentos teóricos e discursivos da questão regional brasileira. Nesta parte, o que fica evidente é a importância da correlação e interdependência entre o tema da questão regional e a formação do discurso nacional-desenvolvimentista no Brasil; e nesse sentido, a obra de Celso Furtado se destaca como importante elemento de elaboração discursiva que irá representar uma interpretação da questão regional como compondo um projeto mais amplo de desenvolvimento nacional. Na parte final do trabalho, destaca-se a conexão entre o ambiente institucional nacional desenvolvimentista brasileiro e a formação de uma tradição de pensamento regionalista amazônico que terá grande influência nas décadas de 40 e 50, e que será responsável pela elaboração de um discurso desenvolvimentista-regionalista a partir da influência de autores como Euclides da Cunha e Gilberto Freyre. Autores como Arthur Cezar Ferreira Reis, Leandro Tocantins e Djalma Batista, entre outros, serão considerados alguns dos principais responsáveis pela elaboração de um discurso intelectual que, segundo uma das conclusões principais do estudo, tem suas condições de possibilidade criadas e impulsionadas a partir da realidade político-institucional que se constitui no contexto de formação das instituições desenvolvimentistas na Amazônia nas décadas de 40 e 50. Conformando uma formação discursiva a qual atribuiremos o nome de desenvolvimentismo-regionalista.

Platão e a matemática: uma questão de método

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Ruminal degradability of neutral detergent fiber of Cynodon spp. grasses at four regrowth ages

The aim of this work was to determine ruminal degradation of neutral detergent fiber of grasses of the genus Cynodon, harvested at four cutting ages. It was used a randomized block design, with five treatments arranged in a split plot, the five evaluated genotypes: Tifton 85, Jiggs, Russel, Tifton 68 and Vaquero; were the plots and ages of cutting were the subplots: 28, 48, 63 and 79 days. By adding one day in the cutting age, there was a linear reduction in the effective degradability of neutral detergent fiber of blade and stem of 0.16 and 0.18%, respectively. The increase in the cutting age had a linear and positive influence on the undegradable neutral detergent fiber with daily increments for leaf and stem of 0.12 and 0.18%, respectively. At the 28 regrowth day, all genotypes showed higher content of potentially degradable insoluble fraction, effective degradability and lower undegradable fraction of the neutral detergent fiber of blade and stem in relation to other ages, in this way this interval is recommended for cutting management.

Emissão de CO2, características do dossel e acúmulo de forragem em pastos de capim-pensacola sob frequências de desfolhação

The aim of this study was to evaluate CO2 emission, canopy characteristics and herbage accumulation in pastures of pensacola bahiagrass under frequencies of defoliation. The experiment was conducted at the Universidade Estadual Paulista Julio de Mesquita Filho, Faculty of Agrarian Sciences and Veterinary of UNESP, Jaboticabal, São Paulo, Brasil. The experimental period was from May 3rd to July 26th 2012. The experimental area comprised 28 m² of pensacola bahiagrass (Paspalum notatum Flügge), divided into 10 plots for allocation of treatment (frequencies of defoliation = 2 or 4 weeks). The following variables were studied: canopy height, light interception, leaf area index, herbage accumulation, tiller density, CO2 emissions, soil temperature and moisture. The frequencies of defoliation in the months of May, June and July slightly affect pensacola bahiagrass characteristics. CO2, soil temperature and moisture are more associated to environmental conditions (months of evaluation) than to the frequencies of defoliation imposed to the canopies.

A procedure to evaluate the efficiency of utilization of dietary amino acid for poultry

The aim of this study was to develop a procedure based on Gompertz function to determine the efficiency of utilization of amino acid. The procedure was applied to determine the efficiency of utilization of dietary lysine, methionine+cystine and threonine by growing pullets and based on the efficiencies were estimated the requirements for the growth phase of birds. The Gompertz function was fitted to the data of feed intake, body weight, feather-free body protein weight and feather protein weight of four strains of laying hens in the growth phase. The rates of consumption and daily protein deposition (PD) were calculated. The amino acid deposition was obtained by multiplying the PD by the amino acid concentration in feather protein and feather-free body protein. The results showed that the efficiency of utilization of amino acid decreased with maturity and, conversely, there was a proportional increase of the requirement per kg of weight gain. The procedure based on the Gompertz function to determine the efficiency of utilization of amino acid proved to be suitable to evaluate the efficiency of utilization of amino acid and can be a useful tool to diagnose the effectiveness of the nutritional management, aiding in decision-making on the nutritional management.

Descrição do potencial de retenção de nitrogênio em frangas de postura por diferentes metodologias: máxima deposição e estimativas da ingestão de metionina+cistina

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

Reutilization of chemical waste in methodologies for analyses of neutral detergent fiber and acid detergent fiber

The disposal of chemical waste and the precision of analyses of the neutral (NDF) and acid (ADF) detergent fiber contents were evaluated utilizing conventional (Van Soest) and alternative methods of analyses. The recovery of acetone promoted both economic and environmental gains, with a recovery rate of 84.12%. The precision of the analyses was not observed in most of the determinations with reutilization of chemical waste in all the analytical methods tested, in spite of promoting decrease in cost, time invested in the preparation of solutions and the disposal of chemical waste.

Avaliação nutricional do feno das folhas da amoreira (Morus alba L.) em frangos de corte

The trial was carried to evaluate the nutritional effects of mulberry leaf hay in broiler chickens. Five treatments were used: control (no mulberry, 3.16% CF); 15% mulberry (4.14% CF); 30% mulberry (5.09% CF), no mulberry (4.14% CF); no mulberry (5.09% CF). A randomized blocks design was used, with two blocks and three replications into the blocks to evaluate performance index, histopathological examination of the visceral organs and morphometric measurements of the hepatocyte nucleus and pancreatic acini. A poor performance index was observed for broilers feeding on mulberry leaves; lesions such as steatosis, proliferation of hepatic duct cells and multiple necrosis were found in the livers of the chickens fed with 30% mulberry (5.09% CF), as well as size reduction of the hepatocyte nucleus and pancreatic acini. From these data, it is concluded that mulberry probably has some toxic substance which can interfere in the improvement of diet ingredients, resulting in damage to broiler chickens.

Investigações sobre sistemas axiomáticos na geometria euclidiana

Pós-graduação em Educação Matemática - IGCE

Differential effects of variation in athletes training on myocardial morphophysiological adaptation in men: Focus on I-123-MIBG assessed myocardial sympathetic activity

High intensity systematic physical training leads to myocardial morphophysiological adaptations. The goal of this study was to investigate if differences in training were correlated with differences in cardiac sympathetic activity.58 males (19-47 years), were divided into three groups: strength group (SG), (20 bodybuilders), endurance group (EG), (20 endurance athletes), and a control group (CG) comprising 18 healthy non-athletes. Cardiac sympathetic innervation was assessed by planar myocardial I-123-metaiodobenzylguanidine scintigraphy using the early and late heart to mediastinal (H/M) ratio, and washout rate (WR).Left ventricular mass index was significantly higher both in SG (P < .001) and EG (P = .001) compared to CG without a statistical significant difference between SG and EG (P = .417). The relative wall thickness was significantly higher in SG compared to CG (P < .001). Both left ventricular ejection fraction and the peak filling rate showed no significant difference between the groups. Resting heart rate was significantly lower in EG compared to CG (P = .006) and SG (P = .002). The late H/M ratio in CG was significantly higher compared to the late H/M for SG (P = .003) and EG (P = .004). However, WR showed no difference between the groups. There was no significant correlation between the parameters of myocardial sympathetic innervation and parameters of left ventricular function.Strength training resulted in a significant increase in cardiac dimensions. Both strength and endurance training seem to cause a reduction in myocardial sympathetic drive. However, myocardial morphological and functional adaptations to training were not correlated with myocardial sympathetic activity.