Series Mayer
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Avaliação do uso de mancais ativos em motores de combustão interna / Evaluation on the use of active bearing in internal combustion engines
Legislações mais severas em relação ao consumo de combustível e a redução na emissão de gases estão fazendo com que os motores de combustão interna operem com pressões de combustão cada vez mais elevadas. Como consequencia destas restrições, os mancais são afetados diretamente. Este trabalho tem como principal objetivo estudar a viabilidade do
Publicado em: 2009
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2. Synthesis and properties of supermolecular meso tetra(pyridyl)porphyrins and its layer-by-layer electrostatic assembled nanomaterials / Obtenção e propriedades de meso tetra(piridil)porfirinas supermoleculares e dos nanomateriais obtidos por montagem eletrostática camada por camada
A new series of nonplanar supermolecular metalloporphyrins have been obtained by coordenative self-assembly of meso-tetra(3-pyridyl)porphyrins and ruthenium complexes such as [Ru(bipy)2Cl]+ and [Ru(bipy)2(OH2)]2+. The electronic and structural properties have been investigated by electronic spectroscopy, mass spectrometry, cyclic voltammetry, and spectroelec
Publicado em: 2005
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3. Dinâmica do grupo de renormalização: Um estudo via equações diferenciais parciais / Dynamic of the group of renormalization : A study via partial differential equations
Consideramos dois tópicos distintos relacionados a modelos clássicos da mecânica estatísticas de equilíbrio. O primeiro constitui-se na análise de equação parabólicas semi-lineares associadas à transformação de grupo de renormalização para o gás de Coulomb hierárquico bidimensional e o gás dipolos hierárquicos em dimensão d>1 após tomarmo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/12/2003
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4. Mutagenic analysis of the v-crk oncogene: requirement for SH2 and SH3 domains and correlation between increased cellular phosphotyrosine and transformation.
We have constructed a series of mutants with deletion, linker insertion, and point mutations in the v-crk oncogene of avian sarcoma virus CT10. The v-crk gene contains no apparent catalytic domain, but does contain two blocks of homology to putative regulatory domains, termed SH2 and SH3, found in a variety of proteins implicated in signal transduction. Infe
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5. Point mutations in the abl SH2 domain coordinately impair phosphotyrosine binding in vitro and transforming activity in vivo.
We have constructed a series of point mutations in the highly conserved FLVRES motif of the src homology 2 (SH2) domain of the abl tyrosine kinase. Mutant SH2 domains were expressed in bacteria, and their ability to bind to tyrosine-phosphorylated proteins was examined in vitro. Three mutants were greatly reduced in their ability to bind both phosphotyrosine
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6. Lipids of Putative Relevance to Virulence in Mycobacterium tuberculosis: Phthiocerol Dimycocerosate and the Attenuation Indicator Lipid 1
Lipid compositions of 40 patient isolates of Mycobacterium tuberculosis derived from Madras, Burma, Rangoon, and East Africa were studied, and two major populations of tubercle bacilli were distinguished. Nearly all of the strains previously designated as attenuated for the guinea pig (D. A. Mitchison) are characterized by a specific phenolic phthiocerol die
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7. Controlling small guanine–nucleotide-exchange factor function through cytoplasmic RNA intramers
ADP-ribosylation factor (ARF) GTPases and their regulatory proteins have been implicated in the control of diverse biological functions. Two main classes of positive regulatory elements for ARF have been discovered so far: the large Sec7/Gea and the small cytohesin/ARNO families, respectively. These proteins harbor guanine–nucleotide-exchange factor (
The National Academy of Sciences.
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8. Permeation and block of N-methyl-D-aspartic acid receptor channels by divalent cations in mouse cultured central neurones.
1. Spinal cord and hippocampal neurones in cell culture were voltage clamped using the tight-seal, whole-cell recording technique. The concentration of sodium and a series of divalent cations in the extracellular media was varied to study permeation through excitatory amino acid receptor channels activated by the selective agonists N-methyl-D-aspartic acid (