Effects of the electrolytic treatment on Bacillus subtilis

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Asymmetric exclusion model with impurities

An integrable asymmetric exclusion process with impurities is formulated. The model displays the full spectrum of the stochastic asymmetric XXZ chain plus new levels. We derive the Bethe equations and calculate the spectral gap for the totally asymmetric diffusion at half filling. While the standard asymmetric exclusion process without impurities belongs to the KPZ universality class with an exponent 3/2, our model has a scaling exponent 5/3.

A new class of neurotoxin from wasp venom slows inactivation of sodium current

The effects of alpha-pompilidotoxin (alpha-PMTX), a new neurotoxin isolated from the venom of a solitary wasp, were studied on the neuromuscular synapses in lobster walking leg and the rat trigeminal ganglion (TG) neurons. Paired intracellular recordings from the presynaptic axon terminals and the innervating lobster leg muscles revealed that alpha-PMTX induced long bursts of action potentials in the presynaptic axon, which resulted in facilitated excitatory and inhibitory synaptic transmission. The action or alpha-PMTX was distinct from that of other known facilitatory presynaptic toxins, including sea anemone toxins and alpha-scorpion toxins, which modify the fast inactivation of Na+ current. We further characterized the action of alpha-PMTX on Na+ channels by whole-cell recordings from rat trigeminal neurons. We found that alpha-PMTX stowed the Na+ channels inactivation process without changing the peak current-voltage relationship or the activation time course of tetrodotoxin (TTX)-sensitive Na+ currents, and that alpha-PMTX had voltage-dependent effects on the rate of recovery from Na+ current inactivation and deactivating tail currents. The results suggest that alpha-PMTX slows or blocks conformational changes required for fast inactivation of the Na+ channels on the extracellular surface. The simple structure of alpha-PMTX, consisting of 13 amino acids, would be advantageous for understanding the functional architecture of Na+ channel protein.

Avaliação técnico-econômica do processo de cogeração em uma indústria sucroalcooleira

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Análises técnica e energética da secagem combinada no processamento de casulo do bicho-da-seda de Bombyx Mori L

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Estudo da corrosão de aços de elevado limite elástico e das suas uniões com metais duros ou cermet e com aço/WC-Co em 'NA''CL' 0,6 mol 'L POT. -1'

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estabelecimento e superação de dormência em sementes de Erythrina speciosa Andrews

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Influência do tratamento térmico de alívio de tensões assoaciado à elevada energia de soldagem na tenacidade da zona termicamente afetada de um aço TMCP microligado aplicado em estruturas off-shore

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação histológica do comportamento da matriz dérmica acelular e do vidro bioativo no processo de reparo de cavidade cirúrgica em tíbia de rato

Pós-graduação em Odontologia - FOA

Qualidade ambiental urbana em Presidente Prudente/SP

Pós-graduação em Geografia - FCT

Efeitos dos tratamentos térmicos de normalização, resfriamento rápido e alívio de tensões no aço ASTM A-516 grau 70, utilizado na fabricação de vasos de pressão

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Produção e qualidade dos ovos de poedeiras comerciais submetidas a programas de muda forçada

Pós-graduação em Zootecnia - FMVZ

Evaluation of different methods of cooling-lubrication in cylindrical grinding of advanced ceramic dip

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

Germinação de sementes de romäzeiras (Punica granatum L.) de acordo com a concentração de giberelina

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

Recuperação de áreas degradadas por erosão hídrica em propriedades produtoras de café nos municípios de Getulina e Vera Cruz - SP

The Paulista West region has suffered through the decades an intense process of deforestation when substituting native areas of Atlantic rainforest and Cerrado by agricultural cultivation, mainly coffee in the 20th century. This occupation process without planning and management of the soil resulted in serious erosion problems. Besides, the soil erosion promoted the reduction of agricultural production and the silting of rivers. This paper aims identify the factors of natural scope (geological, geomorphologic and pedologic characteristics) which participate in unleash of erosion process in two agricultural properties producers of coffee in order to apply mechanical techniques of recovery in erosive focuses of furrow and ravine kinds. One of the properties is at the city council of Getulina, located on the sandstones of Adamantina Formation; the other is at the city council of Vera Cruz, located on the sandstones of Marília Formation. However, taking into consideration the analysis of the natural dynamics, they are not enough to explain the complexity of the phenomena which are processed in the geographic space. It made indispensable the incorporation of socio-economic factors, such as the use and occupation process of the soil considering the society as landscape transformers. In order to better understand the importance of each one of the elements that contributes to the unleash of the studied erosions, it was collected soil samples in the areas, general descriptions and texture and morphologic analysis. Finally, it was elaborated the maps of the use and occupation of the soil and the vegetal coverage surrounding the properties studied. It was observed in the rural property of Getulina the substitution of the coffee by pasture that finds degraded. It, in addition to the cattle stomp, which changed the texture and density characteristics among the soil horizons, and the concentration of superficial water flow intensified the occurrence of ...