Deficiências de macronutrientes em plantas de soja cv. BRSMG 68 (Vencedora) cultivada em solução nutritive

Soybean is a crop of great importance for Brazil, and knowledge of their nutritional status allows production and high quality products. Thus, the present work aimed to evaluate the culture of the soybean cv. BRSMG 68 (Vencedora), submitted to macronutrients omission on the development, nutritional status and the visual symptomatology of nutrient deficiency. The design used was completely randomized, with seven treatments that corresponded to the complete (macro and micronutrients) solution and the individual omission of N, P, K, Ca, Mg and S. The treatments were applied two weeks after the emergency of the soybean. The nutrient solution was constantly oxygenated and replaced weekly, and the pH monitored daily remained around 5. After six weeks of application of the treatments, the height of the plants, number of leaves, stem diameter was evaluated, matter dry accumulated in the roots, it leaves aerial and the nutritional state and the characterization of the visual symptoms. The macronutrient deficiency promoted a decrease in production of root and shoot dry mass of soybean cultivar BRSMG 68 (Vencedora) in nutrient solution, for the full treatment. The most limiting nutrient for dry matter production of soybean compared to complete treatment were N, S and K, with decreases of 90, 76 and 73%, respectively. Individual omissions resulted in morphological changes, which were translated by characteristic visual symptoms of nutritional deficiency of the respective nutrient.

Variação sazonal da comunidade protozooplanctônica em um ambiente oligotrófico tropical (reservatório de Ilha Solteira, Brasil)

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

Degradation of dipyrone via advanced oxidation processes using a cerium nanostructured electrocatalyst material

This work studied the degradation of dipyrone, via electrochemical processes and via electro-Fenton reaction using a 4% CeO2/C gas diffusion electrode (GDE) prepared via modified polymeric precursor method. This material was used to electrochemically generate H2O2 through oxygen reduction. The mean crystallite sizes estimated by the Scherrer equation for 4% CeO2/C were 4 nm for CeO2-x (0 4 4) and 5 nm for CeO2 (1 1 1) while using transmission electron microscopy (TEM) the mean nanoparticle size was 5.4 nm. X-ray photoelectron spectroscopy (XPS) measurements revealed nearly equal concentrations of Ce(III) and Ce(IV) species on carbon, which contained high oxygenated acid species like CO and OCO. Electrochemical degradation using Vulcan XC 72R carbon showed that the dipyrone was not removed during the two hour electrolysis in all applied potentials by electro-degradation. Besides, when the Fenton process was employed the degradation was much similar when using cerium catalysts but the mineralization reaches just to 50% at -1.1 V. However, using the CeO2/C GDE, in 20 min all of the dipyrone was degraded with 26% mineralization at -1.3 V and when the Fenton process was employed, all of the dipyrone was removed after 5 min with 57% mineralization at -1.1 V. Relative to Vulcan XC72R, ceria acts as an oxygen buffer leading to an increase in the local oxygen concentration, facilitating H2O2 formation and consequently improving the dipyrone degradation © 2013 Elsevier B.V. All rights reserved.

Caracterização da interação de inositol hexafosfato e cloreto com hemoglobina humana: aspectos energéticos e estruturais

Pós-graduação em Biofísica Molecular - IBILCE

Sistemática da seção Virescentia do gênero Batrachospermum (Rhodophyta, Batrachospermales) no Brasil

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

Estudo da reação de oxidação do metanol sobre fases intermetálicas ordenadas Pt-M com a técnica de espectroscopia de impedância eletroquímica

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Determinação da atividade antimicrobiana in vitro de extratos, frações e compostos isolados de Arrabidaea brachypoda

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Influência da nifedipina sobre a incidência de insuficiência renal aguda no pós-operatório de revascularização do miocárdio com circulação extracorpórea

Pós-graduação em Bases Gerais da Cirurgia - FMB

Estudo químico e atividades mutagênica e antiulcerogênica de Syngonanthus nitens (Bong.) Ruhland

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Estudo fitoquímico da fração AcOEt do extrato etanólico das folhas de Arrabidaea brachypoda (DC) Bureau - Bignoniaceae e atividades antioxidante e inibitória da enzima mieloperoxidase das substancias isoladas

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Ictiofauna de riachos na planície costeira da bacia do rio Itanhaém, litorial sul de São Paulo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Biossorção de terras-raras por Sargassum sp: estudos preliminares sobre as interações metal-biomassa e a potencial aplicação do processo para a concentração , recuperação e separação de metais de alto valor agregado em colunas empacotadas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Bioprospecção de produtos naturais e sintéticos em modelos celulares de citotoxicidade, genotoxicidade, apoptose e quimioprevenção do câncer

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Análise termoeconômica da produção de biodiesel: aspectos técnicos, econômicos e ecológicos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Separation of Scaptotrigona postica Workers into Defined Task Groups by the Chemical Profile on Their Epicuticle Wax Layer

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