A mathematical approach to simulate spatio-temporal patterns of an insect-pest, the corn rootworm Diabrotica speciosa (Coleoptera: Chrysomelidae) in intercropping systems

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Landscape Diversity Influences Dispersal and Establishment of Pest with Complex Nutritional Ecology

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

Produção de hidrolisado enzimático de farinha de batata-doce para fermentação etanólica

Recently there is a great quest of producing alcohol from starchy resources, replacing the sugar cane. The most common starchy sources are cassava, maize and sweet potatoes and a lot of research are been realized with excellent results. In this work it was evaluated the influence of the concentration of dry matter on the enzymatic hydrolysis process of starch from sweet potato for ethanol production. Through the sweet potato was produced a flour using a low-cost method and easy operation equipments. The sweet potato flour was characterized physical and chemically and from these results was prepared the treatments for enzymatic hydrolysis. The experimental design considered as independent variable the dry matter concentration of the sweet potato flour in 3 levels; 10, 15 and 20% in the formulation of suspensions. The other variables were keeping constant being: temperature in the 1° hydrolysis step of 90°C and time of 2 hours; temperature in the 2° saccharification step of 60°C and time of 17 hours. The hydrolysates obtained at the three assays were transferred to six liter enlerynmeyer and inoculated with a biologic catalyst, Saccharomyces, dehydrated yeasts of Saccharomyces cerevisiae CAT 1, at a rate of 5% in weight. The flasks were placed in a shaker type orbital with controlled temperature of 30°C during a time of 15 hours. The initial reducer sugars concentration and respective ethanol concentrations in wine were: 11.2% glucose and 2.16% ethanol in the suspension with 10% of dry matter; 13.5% glucose and 4.39% ethanol with 15% and 17.5% glucose and 6.03% ethanol in suspension with 20% of dry matter. ix The results showed that the higher percentage of dry matter carried out to higher sugar yield in hydrolyzed. It was possible observed that products quality improved with a higher concentration of dry matter

Estudo do comportamento térmico e reológico de amidos na conformação cerâmica de compostos multicamada com alumina, titanato de alumínio e dióxido de titânio

The project aims to develop ceramic compounds with gradients of the mechanical properties, using the molding technique with commercial starches. To understand the process of interaction between starch and ceramic powders, the proposed methodology involves viscometry tests (up to 200 °C). Viscometric assays were carried out with slurries of alumina, titania and aluminum titanate with potato starch, cassava and corn. The specimens were tested for dilatometry, thermomechanical, thermal shock, mechanical and characterization by SEM. The ceramic powders and starches were analyzed using the optical microscope to measure the size of these. It was made of th kinetics of starch gelatinization and titania with the cornstarch in theoptical microscope to observe how the grains of starch behaved in welling

Período anterior à interferência de corda-de-viola em cana-planta

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Expressão, purificação e caracterização estrutural de proteínas codificadas por dois fitovírus

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Madness and the Illusion of Happiness in Quincas Borbas

“Ao vencedor, as batatas” era o lema de Humanitas, princípio filosófico concebido por Quincas Borba, um rico e excêntrico filósofo que se apresentava como o maior homem da terra. Usando ironia, paródia, recursos satíricos e tendo uma aguçada visão da existência humana, Machado de Assis retrata um quadro impressionante das condições políticas e sociais não apenas da decadência do império brasileiro, mas também do gênero humano. O ensaio analisa o romance machadiano - narrado em terceira pessoa e publicado em livro em 1891 - utilizando os recursos fornecidos pelos estudos de literatura comparada. As ressonâncias das leituras de Erasmo (Elogio à loucura), Cervantes (Dom Quixote), Voltaire (Cândido) e Darwin, no tocante à teoria da seleção natural das espécies, demonstram o impacto da presença da cultura europeia no pensamento do escritor brasileiro e sua aclimatação aos costumes do Rio de Janeiro num curto e turbulento período histórico em que a nação experimentava profundas mudanças políticas: a abolição da escravatura (1888) e proclamação da República no ano seguinte.

Intensidades luminosas e profundidade de Semeadura na emergência e desenvolvimento de espécies de plantas daninhas

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

Fontes e manejo de nitrogênio na cultura da batata em solos arenosos

Pós-graduação em Agronomia (Agricultura) - FCA

Antitumor and cytotoxic activity of Kielmeyera coriacea mart. Zucc. and Pyrostegia venusta (ker-gawl.) Miers extracts

This study aimed to investigate the antitumor and cytotoxicity activities of Kielmeyera coriacea and Pyrostegia venusta extracts. Therefore, the hydroalcoholic extracts of P. venusta flowers and K. coriacea leaves were prepared. The extracts were evaporated and the dry extracts were diluted at concentrations of 1.0, 0.1, 0.01 and 0.001 mg/ml for carrying out the bioassays. Artemia salina eggs were incubated in saline solution at 28°C for 24 h. The larvae were treated with different extracts concentrations and the mortality was evaluated after 24 and 48 h. Five discs of potato were placed in Petri dishes and 50 μl of inoculum of Agrobacterium tumefaciens were added to it at 28°C for 24 h incubation. So, 50 μl of the extracts in different concentrations were added. Positive and negative controls were made. The P. venusta and K. coriacea extracts did not show statistically significant acute toxicity. K. coriacea extract showed (mean% of tumor ± standard deviation) 15.30 ± 3.24, 6.34 ± 3.82, 7.57 ± 2.92 and 5.77 ± 2.85 and P. venusta showed 25.82 ± 5.15, 38.40 ± 8.28, 15.75 ± 4.44 and 13.38 ± 7.92, with their concentrations for the antitumor bioassay, and the positive control showed 25.80 ± 6.14. According to the obtained results it was established that the K. coriacea and P. venusta extracts showed antitumor activity but did not show significant cytotoxic activity in A. salina test.

Detecção da procedência de plantas psicoativas pelos isótopos estáveis do nitrogênio (15n) e oxigênio (18o)

This research examines the merits of hallucinogenic plants considered and/or psychoactive substances, such as Cannabis sativa and Ipomoea violacea, using the isotope rates of stable isotope of oxygen (18O) and nitrogen (15N), continuing projects already developed by the research group at the Center for Stable Isotope (CIE), which evaluated the isotopes carbon-13. This paper helps in creating a database that we intent to use in evaluation of each plant merit. Through the IRMS (Isotope-Ratio Mass Spectrometry) technique, it has shown that some of the 24 samples of marijuana (Cannabis sativa L.) evaluated were similar to those grown in the regions of Fairbanks and Tanacross Alaska, USA. In turn, the 50 samples of Ipomoea violacea, coming from Botucatu (SP) and Três Lagoas (MS), got their differences detected, in order to clearly identify the discrepancies between their growing regions. Thus, it was possible not only to track the geographical differences between marijuana samples collected from different regions, but also evaluate the isotopic variation of leaf, flower and seed of Ipomoea violacea. With this database, it was possible to determine the origin region of the drug and/or detect where the cultivation was carried out, aiding in the search of the traffic control agencies, such as the Federal Police in Brazil

Reguladores vegetais e alguns nutrientes minerais no desenvolvimento de plantas de tomateiro Pizzadoro enxertadas e não enxertadas

Pós-graduação em Agronomia (Horticultura) - FCA

Eficácia de óleos minerais aplicados como adjuvantes auxiliando na selitividade de herbicidas na cultura de cana-de-açúcar

Pós-graduação em Agronomia - FEIS

Greenhouse gas balance in the conversion from extensive pasture to other agricultural systems in Andean region of Colombia

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

Qualidade de tubérculos de batata da cultivar 'Atlantic' afetada pela adubação fosfatada

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