Eficiência de um sistema de desinfecção solar de águas residuárias domésticas com adição de diferentes doses de peróxido de hidrogênio

Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA

Antecipação de nitrogênio para a cultura do milho em sucessão a gramíneas forrageiras no sistema plantio direto

Pós-graduação em Agronomia (Agricultura) - FCA

Desenvolvimento de método de semeadura em sistema de plantio direto para agricultura familiar

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Controle de qualidade no plantio convencional e mecanizado de cana-de-açúcar

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Curva de lactação de cabras da raça Alpina e de seus mestiços boer, em sistema de produção em pasto, com e sem suplementação concentrada

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

Sistema de monitoramento da temperatura e umidade em silos graneleiros via radiofrequencia

The use of Information and Communication Technology has grown in most agricultural activities. As a consequence, it has changed the way of thinking and acting of the farmer who wants to establish a more and more competitive market. However, the high costs of acquisition and maintenance of those technologies may be a factor which can inhibit its spread and acceptance, mainly to a large number of small grain Brazilian farmers. In this context, there is a need for innovative solutions that are proper for this universe of farmers. Starting from this premise, this paper presents the development of a low cost prototype to the monitoring process of temperature and humidity values of grains stored in silos, using communication based on wireless technology by radio frequency. Therefore, the economic implications of cost/benefit ratio of innovative application of wireless transmission in the process of thermometry of grains were analysed. The prototype was made of two electronic units, one of acquisition and another one of data reception, as well as computational software, which offered the farmer more precise information for the control of aeration. By means of stability, integrity and reliability tests of data transmission via radio, using low cost electronic components, the development system can be considered as potentially viable. It presented the difference regarding the wireless communication via radio in the process of grains thermometry, providing mobility, reducing cabling costs and maintenance, and also offering an easy system expansion; it was also appropriate to temperature and humidity monitoring in grain silos; and revealed operational viability, besides the low cost development when compared to similar products available in the Brazilian market.

Sistema fotovoltaico monocristalino para bombeamento de água

Since ancient times, it has been a huge challenge to all people around the world to manage to get their fresh water, keeping it clean and providing it to every human being, so that it can be used for their daily needs. This is especially true for small properties in the countryside and in isolated areas with low demographic density. Pumping the water in those regions is a solution that rationalizes its use in domestic chores, in animal rearing and in the irrigation systems of cultivated areas. Making feasible local, renewable and non-polluted energetic alternatives is the aim for those areas that are usually far away from the public electric network. Using photovoltaic solar energy is the alternative now proposed. For this objective was built a system with two monocrystalline panels, one pump, two water tanks, two level sensors and a solenoid valve to pump water, using a pump powered an array of monocrystalline solar panels. The main goal was to compare their rate of water flow and their energy consumption. The use of one data acquisition equipment allowed collecting meteorological, electrical and hydraulic values, and also serving for the control and activation of the pumping system. During four months in a row as from April 2009, arrangements with one or two panels were tested. Mathematics correlations and adjustment lines were used to interpret the behavior of obtained dataset. During the analyzed period the system followed the linear equations with great accuracy. The daily average amount of water pumped by the several tested arrays stayed between 1,100 and 2,500 liters, and that is enough to supply a small rural property. The pumping system with two panels effectively showed the major amount of water, but a system with one panel can be an economical solution until 1,500 liters on day. It did not characterize a direct relationship between power or quantity of photovoltaic panels and daily outflow of water pumping.

Fisiologia e bioquímica do tomateiro submetido à irrigação salina parcial do sistema radicular

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Efeito imunomodulatório e controle da infecção fúngica do extrato de alho (Allium sativum L.) em modelo murino de esporotricose

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Modelo de Resposta à Intervenção (RTI) para desenvolvimento das habilidades fonológicas com tutoria instrucional em contexto escolar: elaboração e controle de eficácia

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Qualidade física e química do solo em função do sistema de produção e da aplicação superficial de silicato e calcário em experimento de longa duração

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

Avaliação do Sistema Simplified Drum-Buffer-Rope em ambientes de produção para estoque

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Controle das propriedades dinâmicas de sistemas mecânicos através da utilização de molas inteligentes

Pós-graduação em Engenharia Mecânica - FEIS

Dos sujeitos e lugares da punição: da passagem do/a jovem perigoso/a para o/a jovem em perigo: um estudo das dimensões do dispositivo da gestão dos riscos e de controle social da juventude

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeito de diversos protocolos de dessensibilização dentinária na obliteração de túbulos dentinários, resistência de união do sistema adesivo e formação de camada hibrida na dentina cervical

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)