Grc
Mostrando 13-19 de 19 artigos, teses e dissertações.
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13. Behavior of conventional glass fibers in matrix of Portland cement modified with latex and with the addition of silica fume. / Comportamento das fibras de vidro convencionais em matriz de cimento Portland modificada com látex e adição de sílica ativa.
Portland cement mortar and concrete are durable building materials, relatively cheap and, despite they display a good rigidity and an adequate compressive strength, they have other deficient properties such as tensile strength, impact, fatigue, beyond low toughness and ductility. A considerable improvement of these properties can be obtained adding fibers, i
Publicado em: 2002
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14. Identification of Genes Involved in the Glyoxylate Regeneration Cycle in Methylobacterium extorquens AM1, Including Two New Genes, meaC and meaD
The glyoxylate regeneration cycle (GRC) operates in serine cycle methylotrophs to effect the net conversion of acetyl coenzyme A to glyoxylate. Mutants have been generated in several genes involved in the GRC, and phenotypic analysis has been carried out to clarify their role in this cycle.
American Society for Microbiology.
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15. Genic Interaction Causing Embryonic Mortality in the Rat: Epistasis between the Tal and grc Genes
The autosomal dominant mutant gene, tail anomaly lethal (Tal), of the rat is lethal when homozygous but affects tail morphology (kinks and reduced length) and body weight when heterozygous. There is no apparent sex effect on the expression of Tal. It is incompletely penetrant; has variable expressivity, which is influenced partly by its genetic background; a
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16. DNA Sequence Analysis of Sry Alleles (Subgenus Mus) Implicates Misregulation as the Cause of C57bl/6j-Y(pos) Sex Reversal and Defines the Sry Functional Unit
The Sry (sex determining region, Y chromosome) open reading frame from mice representing four species of the genus Mus was sequenced in an effort to understand the conditional dysfunction of some M. domesticus Sry alleles when present on the C57BL/6J inbred strain genetic background and to delimit the functionally important protein regions. Twenty-two Sry al
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17. Yeast telomere repeat sequence (TRS) improves circular plasmid segregation, and TRS plasmid segregation involves the RAP1 gene product.
Telomere repeat sequences (TRSs) can dramatically improve the segregation of unstable circular autonomously replicating sequence (ARS) plasmids in Saccharomyces cerevisiae. Deletion analysis demonstrated that yeast TRSs, which conform to the general sequence (C(1-3)A)n, are able to stabilize circular ARS plasmids. A number of TRS clones of different primary
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18. Assessment of frequency-dependent alterations in the level of extracellular Ca2+ in the synaptic cleft.
The synaptic cleft may be represented as a very thin disk of extracellular fluid. It is possible that at high stimulation frequencies the interval between pulses would be insufficient for diffusion of Ca2+ from the periphery of the cleft to replace extracellular Ca2+ depleted at the center of the cleft as a result of activation of postsynaptic, Ca2(+)-permea
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19. Specific activation of p85-p110 phosphatidylinositol 3'-kinase stimulates DNA synthesis by ras- and p70 S6 kinase-dependent pathways.
We have developed a polyclonal antibody that activates the heterodimeric p85-p110 phosphatidylinositol (PI) 3'-kinase in vitro and in microinjected cells. Affinity purification revealed that the activating antibody recognized the N-terminal SH2 (NSH2) domain of p85, and the antibody increased the catalytic activity of recombinant p85-p110 dimers threefold in