PPGEA
URI Permanente para esta coleção
Navegar
Navegando PPGEA por Autor "007.858.849-98"
Agora exibindo 1 - 3 de 3
Resultados por página
Opções de Ordenação
- ItemDesenvolvimento de reator pirolítico para produção e caracterização de biochar(Universidade Federal de Mato Grosso, 2018-07-06) Silva, Olivia Paula; Santos, Heinsten Frederich Leal dos; 213.386.748-11; http://lattes.cnpq.br/7431674954926317; Silva, Tonny José Araújo da; 781.203.064-49; http://lattes.cnpq.br/0651075688988405; Silva, Tonny José Araújo da; 781.203.064-49; http://lattes.cnpq.br/0651075688988405; Santos, Heinsten Frederich Leal dos; 213.386.748-11; http://lattes.cnpq.br/7431674954926317; Silva, Edna Maria Bonfim da; 960.432.454-34; http://lattes.cnpq.br/8660058048761423; Venzon, Marcio; 007.858.849-98; http://lattes.cnpq.br/2300724138455419; Zabotto, Fabio Luis; 217.374.348-14; http://lattes.cnpq.br/8828635263888498The resulting product of pyrolysis, the biochar can contribute to carbon sequestration and improve soil properties. However, biochar’s own properties vary depending on its production parameters, such as pyrolysis temperature, heating rate, residence time, and raw material, which makes it fundamental to understand the influence of these conditions over biochar’s chemical and physical properties. The aim is to develop a pyloysis reactor with temperature control, and restriction on oxygen (O2) input, to produce biochar under different conditions, as well as to study the influence of temperature and residence time on the resulting biochar whose raw material is cedrinho (Erisma uncinatum Warm, Vochysiaceae). The experiment was fully casual and had a 4x3 factorial design: four temperatures (300, 400, 500 e 600 ◦C), and three residence times (1, 2 e 3 h). The variables analyzed were immediate analysis (moisture, content of volatile materials, ashes and fixed carbon), gravimetric yield, and pH. The equipment showed good performance regarding temperature control and operation safety. The heating rates varied from 25,37 to 40,42 ◦Cmin−1 , and the maximum outer surface temperature was 144 ◦C. The temperature the most influential factor on the studied variables. The content of volatile materials reduced by 27,17 units by rising the temperature, while the content of fixed carbon increased by 24,77 units. pH also increased by increasing pyrolysis temperature.
- ItemDesenvolvimento e avaliação de um protótipo para resfriamento evaporativo em casa de vegetação(Universidade Federal de Mato Grosso, 2020-02-28) Dias, Douglas Edson; Silva, Tonny José Araújo da; 781.203.064-49; http://lattes.cnpq.br/0651075688988405; Silva, Tonny José Araújo da; 781.203.064-49; http://lattes.cnpq.br/0651075688988405; Pinheiro, Everton Alves Rodrigues; 021.810.303-40; http://lattes.cnpq.br/2790021654126083; Venzon, Marcio; 007.858.849-98; http://lattes.cnpq.br/2300724138455419Greenhouses are extremely important devices for world agriculture, including researching and cultivation of cultures that need protection from climatic adversities. In most greenhouses in hot climates, the control of the microclimate is performed by pad-fan type evaporative air systems. In this condition, this work aimed to develop a small-scale prototype of a system where the conventional fan is replaced by a rotating turbine ventilator, aiming to evaluate cooling efficiency and air humidification. The prototype was developed at Federal University of Mato Grosso, Rondonópolis – MT, Brazil, and was composed of two structures (greenhouses) with approximate volumes of 9 m³, each with a type of material in its evaporative panel (cellulose and expanded clay). The structure was monitored by temperature and humidity sensors, in order to record the local microclimate for one month. Graphs and isotherms were generated that allowed the analysis and comparison of the structures. The results showed that the materials used in the evaporative cooling panel were not very efficient. When compared, the cellulose panel had a better cooling efficiency compared to the expanded clay.
- ItemProjeto e construção de um veículo terrestre autônomo para uso na agricultura(Universidade Federal de Mato Grosso, 2018-07-23) Godoy, Edson; Villiotti, Carlos Alberto; 081.862.308-07; http://lattes.cnpq.br/1680184849424627; Viliotti, Carlos Alberto; 081.862.308-07; http://lattes.cnpq.br/1680184849424627; Mion, Renildo Luiz; 034.525.757-05; http://lattes.cnpq.br/8030830142710133; Santos, Heinsten Frederich Leal dos; 213.386.748-11; http://lattes.cnpq.br/7431674954926317; Venzon, Marcio; 007.858.849-98; http://lattes.cnpq.br/2300724138455419; Duarte, Thiago Franco; 011.291.431.47; http://lattes.cnpq.br/7076042826792327Mobile robots have been studied over the years for most varied application areas, from home appliances to aerospace applications as Mars Rover. Because of their simplicity, has been used for several types of studies as basis for control strategies and computer vision in a wide range of areas. In this dissertation was approached the mechanical construction of a mobile robot for application in the agricultural engineering, with its own application characteristics. At the end of the work, a structure with a variable width, robust and low cost was developed, allowing its use in several types of culture for development and production purposes, with a directional and traction module that could be applied in other types of robots or autonomous vehicles. The drive and control circuits for the module motors have also been developed. The vehicle should be used for more advanced studies in the area of control, computer vision and artificial intelligence.