Desempenho operacional de semeadora-adubadorae perdas na colheita do milho em sistema de plantio direto

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Compostos luminescentes em matrizes macroporosas de sílica obtidas por tratamento hidrotérmico a partir de vidro pyrex

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

Conservação genética Ex Situ de populações naturais de Myracrodruon urundeuva Fr. All. em sistema silvipastoril

Pós-graduação em Agronomia - FEIS

Síntese otimizada de sistemas de cogeração e dessalinização

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Microgeração de energia eletrica (abaixo de 100kw) utilizando turbina tesla modificada

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Modelagem e simulação de sistemas de geração de energia para o setor de petróleo e gás

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Perspectivas da co-geração com resíduos sólidos municipais sob a ótica da gestão ambiental

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

Análise experimental da reforma a vapor de etanol: aspectos técnicos, econômicos e ecológicos

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

Aumento da oferta de eletricidade no setor sucroalcooleiro: incorporação de ciclo combinado associado à gaseificador de leito fluidizado

Pós-graduação em Engenharia Mecânica - FEG

In Vitro Antiparasitic Activity and Chemical Composition of the Essential Oil Obtained from the Fruits of Piper cubeba

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Thermodynamic analysis and comparison of downdraft gasifiers integrated with gas turbine, spark and compression ignition engines for distributed power generation

The objective of the present article is to assess and compare the performance of electricity generation systems integrated with downdraft biomass gasifiers for distributed power generation. A model for estimating the electric power generation of internal combustion engines and gas turbines powered by syngas was developed. First, the model determines the syngas composition and the lower heating value; and second, these data are used to evaluate power generation in Otto, Diesel, and Brayton cycles. Four synthesis gas compositions were tested for gasification with: air; pure oxygen; 60% oxygen with 40% steam; and 60% air with 40% steam. The results show a maximum power ratio of 0.567 kWh/Nm(3) for the gas turbine system, 0.647 kWh/Nm(3) for the compression ignition engine, and 0.775 kWh/Nm(3) for the spark-ignition engine while running on synthesis gas which was produced using pure oxygen as gasification agent. When these three systems run on synthesis gas produced using atmospheric air as gasification agent, the maximum power ratios were 0.274 kWh/Nm(3) for the gas turbine system, 0.302 kWh/Nm(3) for CIE, and 0.282 kWh/Nm(3) for SIE. The relationship between power output and synthesis gas flow variations is presented as is the dependence of efficiency on compression ratios. Since the maximum attainable power ratio of CIE is higher than that of SIE for gasification with air, more research should be performed on utilization of synthesis gas in CIE. (C) 2014 Elsevier Ltd. All rights reserved.

Comparative analysis between a PEM fuel cell and an internal combustion engine driving an electricity generator: Technical, economical and ecological aspects

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

Divergência genética de cultivares de cana-de-açúcar quanto à resistência a Diatraea saccharalis

The objective was to evaluate the genetic diversity of cultivars in sugar cane for resistance to D. saccharalis. The experiment was carried out in the laboratory in completely randomized design with 11 treatments (one control and 10 treatments) in ten replications. The replications were made from artificial diets (food and refood) made with dry steam crushed from sugar cane cultivars stems, except for one of them considered standard diet. The cultivars used were: RB867515, RB855453, RB855536, CTC 15, CTC 9, SP80-1842, SP79-1011, SP89-1115, SP81-3250 and SP87-365. In the evaluation biological characteristics of the insect considered were: larval development (days), larval viability (%), pupal development (days), pupal weight (g), pupal viability (%), period of hatched larvae to adults emergence (days), total viability (%) and adults longevity without food (days). The generalized Mahalanobis distance (D-2) for the cluster analysis by the method of average linkage between groups (UPGMA) and Tocher's method optimization was determined. Four and five groups were formed, respectively, by the method of average linkage between groups (UPGMA) and Tocher's method optimization. We concluded that the cultivar CTC 15 standed out as highly susceptible to D. saccharalis, while the cultivar SP87-365 behaved as moderately resistant by antibiosis to D. saccharalis.

Temperature charts of Hevea brasiliensis during log steaming and its effect on the board cracks

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Thermal Characteristics of Lignin Residue from Industrial Processes

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)