Strength Envelope
Mostrando 13-24 de 41 artigos, teses e dissertações.
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13. AVALIAÇÃO DO COMPORTAMENTO GEOMECÂNICO E DE ALTERABILIDADE DE ENROCAMENTOS / EVALUATION OF THE GEOMECHANICAL BEHAVIOR AND THE ALTERABILITY OF ROCKFILLS
This work presents an experimental study of the behavior of rockfills, focusing on the changes caused by rock alteration on the physical and mechanical characteristics, such as, lithology, gradation, deformability and strength. The basalt rockfill used in the construction of Marimbondo dam has been considered, with about 25 years of in situ alteration, toget
Publicado em: 2001
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14. ASSESSMENT OF THE ALTERABILITY AND GEOMECHANICAL BEHAVIOUR OF ROCKFILLS / ANÁLISE DE TENSÕES E DEFORMAÇÕES EM PAVIMENTOS
This work presents an experimental study of the behavior of rockfills, focusing on the changes caused by rock alteration on the physical and mechanical characteristics, such as, lithology, gradation, deformability and strength. The basalt rockfill used in the construction of Marimbondo dam has been considered, with about 25 years of in situ alteration, toget
Publicado em: 1994
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15. INFLUÊNCIA DA SUCÇÃO NA ESTABILIDADE DE TALUDES NATURAIS EM SOLOS RESIDUAIS / INFLUENCE OF SOIL SUCTION ON THE STABILITY OF RESIDUAL SOIL SLOPES
The evaluation of stability of natural slopes in residual soils involves in many cases a considerable degree of uncertainly due to the difficulty of estimating or knowing the pore pressure operating in the slope. Much less uncertainly however existis in determining the effective strength parameters for the soils involved. This work deals with the evaluation
Publicado em: 1984
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16. Strength of Envelope Protein Interaction Modulates Cytopathicity of Measles Virus
To understand the molecular determinants of measles virus (MV) cytopathicity, we have characterized mutant viruses exhibiting a more-extensive cell-to-cell fusion while maintaining efficient replication to high titers. A virus which is modified by the addition of an 8-amino-acid Flag epitope tag at the cytoplasmic tail of its H (for MV hemagglutinin) envelop
American Society for Microbiology.
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17. Methanococcus vannielii: ultrastructure and sensitivity to detergents and antibiotics.
Methanococcus vannielii is a strictly anaerobic motile coccus that possesses a tuft of flagellae. The cells are markedly sensitive to mechanical stress and are readily lysed by detergents, but the organism grows normally in media of low ionic strength. The absence of a typical cell wall, further suggested by resistance of M. vannielii to penicillin, cycloser
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18. Rupture of the cell envelope by induced intracellular gas phase expansion in gas vacuolate bacteria.
Using a new approach, we estimated the physical strength of the cell envelopes of three species of gram-negative, gas vacuolate bacteria (Microcyclus aquaticus, Prosthecomicrobium pneumaticum, and Meniscus glaucopis). Populations of cells were slowly (0.5 to 2.9 h) saturated with argon, nitrogen, or helium to final pressures up to 100 atm (10, 132 kPa). The
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19. Mechanism of Dissolution of Envelopes of the Extreme Halophile Halobacterium cutirubrum1
Onishi, H. (National Research Council, Ottawa, Ontario, Canada), and D. J. Kushner. Mechanism of dissolution of envelopes of the extreme halophile Halobacterium cutirubrum. J. Bacteriol. 91:646–652. 1966.—Envelopes of Halobacterium cutirubrum dissolved rapidly in media of low ionic strength. Heating partially inhibited breakdown, probably because of nons
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20. Fowlpox virus recombinants expressing the envelope glycoprotein of an avian reticuloendotheliosis retrovirus induce neutralizing antibodies and reduce viremia in chickens.
Eight stable fowlpox virus (FPV) recombinants which express the envelope glycoprotein of the spleen necrosis virus (SNV) strain of reticuloendotheliosis virus (REV), an avian retrovirus, were constructed. These recombinants differ in the genomic location of the inserted genes, in the orientation of the insert relative to flanking viral sequences, and in the
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21. Stages of Polymyxin B Interaction with the Escherichia coli Cell Envelope
The effects of polymyxin B (PMB) on the Escherichia coli outer (OM) and cytoplasmic membrane (CM) permeabilities were studied by monitoring the fluxes of tetraphenylphosphonium, phenyldicarbaundecaborane, and K+ and H+ ions. At concentrations between 2 and 20 μg/ml, PMB increased the OM permeability to lipophilic compounds and induced a leakage of K+ from t
American Society for Microbiology.
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22. Isolation and Purification of the Envelope Proteins of Newcastle Disease Virus
A procedure has been developed for the isolation of Newcastle disease virus (NDV) envelope proteins. The two surface glycoproteins and the non-glycosylated membrane protein were solubilized with 2% Triton X-100 and 1 m KCl. Removal of the KCl by dialysis yielded by precipitation a pure preparation of the non-glycosylated membrane protein, which is insoluble
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23. Interaction of Mg-2+ with peptidoglycan and its relation to the prevention of lysis of a marine pseudomonad.
Intact cells of marine pseudomonad B-16 (ATCC 19855) which have been washed with a solution of NaCl require only 0.001 M MgSO4 and 100 to 300 times this concentration of NaCl or KCl to prevent lysis. Conversion of intact cells to mureinoplasts, a process involving removal of the outer double-track layer (outer membrane) and the periplasmic space layer of the
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24. Cytoplasmic Tail of Moloney Murine Leukemia Virus Envelope Protein Influences the Conformation of the Extracellular Domain: Implications for Mechanism of Action of the R Peptide
The envelope (Env) protein of Moloney murine leukemia virus (MoMuLV) is a homotrimeric complex whose monomers consist of linked surface (SU) and transmembrane (TM) proteins cleaved from a precursor protein by a cellular protease. In addition, a significant fraction of virion-associated TM is further processed by the viral protease to remove the C-terminal 16
American Society for Microbiology.