Decay Delay
Mostrando 1-12 de 44 artigos, teses e dissertações.
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1. Reverberações do debate decadência/atraso em Portugal e no Brasil em fins dos oitocentos: histórias conectadas / Reverberations of the debate decay/delay in Portugal and Brazil in the late nineteenth century: stories connected
A tese que ora se apresenta pretende investigar as conexões e trânsitos envolvendo indivíduos e objetos culturais entre Portugal e Brasil durante as três últimas décadas da centúria oitocentista e primeiros anos do século XX, no âmbito da produção discursiva e das intervenções públicas de intelectuais portugueses e brasileiros empenhados em cri
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/05/2011
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2. Integrated control of Penicillium digitatum by the predacious yeast Saccharomycopsis crataegensis and sodium bicarbonate on oranges
Our investigation of integrated biological control (IBC) started with an assay testing activity of the predacious yeast Saccharomycopsis crataegensis UFMG-DC19.2 against Penicillium digitatum LCP 4354, a very aggressive fungus that causes postharvest decay in oranges. Under unfavourable environmental conditions, the yeast showed a high potential for control
Brazilian Journal of Microbiology. Publicado em: 2010-06
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3. Dynamical properties of a mutualism system in the presence of noise and time delay
The normalized correlation function C(s) and the associated relaxation time Tc of the mutualism system in the presence of noise and time delay are investigated. The effects of noise and time delay on C(s) and Tc for a mutualism system are discussed. Based on the numerical computation, it is found that: (i) The noise intensity D slows down the the fluctuation
Brazilian Journal of Physics. Publicado em: 2009-06
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4. Effects of Anticoagulant, Processing Delay, and Assay Method (Branched DNA versus Reverse Transcriptase PCR) on Measurement of Human Immunodeficiency Virus Type 1 RNA Levels in Plasma
We conducted two studies to determine the potential influence of delays in blood processing, type of anticoagulant, and assay method on human immunodeficiency virus type 1 (HIV-1) RNA levels in plasma. The first was an experimental study in which heparin- and EDTA-anticoagulated blood samples were collected from 101 HIV-positive individuals and processed to
American Society for Microbiology.
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5. Characterization of the pace-maker current kinetics in calf Purkinje fibres.
Kinetics of the cardiac pace-maker current (if) were studied using high K+, low Na+ solutions under conditions where the current time course could be dissected from other components. Activation of if during relatively large negative pulses is S-shaped, and is approximated by an exponential function of time to the third power. Less-pronounced S-shaped activat
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6. Short term memory may be the depletion of the readily releasable pool of presynaptic neurotransmitter vesicles of a metastable long term memory trace pattern
The Tagging/Retagging model of short term memory was introduced earlier (Tarnow in Cogn Neurodyn 2(4):347–353, 2008) to explain the linear relationship between response time and correct response probability for word recall and recognition: At the initial stimulus presentation the words displayed tag the corresponding long term memory locations. The tagging
Springer Netherlands.
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7. Viral dynamics in vivo: limitations on estimates of intracellular delay and virus decay.
Anti-viral drug treatment of human immunodeficiency virus type I (HIV-1) and hepatitis B virus (HBV) infections causes rapid reduction in plasma virus load. Viral decline occurs in several phases and provides information on important kinetic constants of virus replication in vivo and pharmacodynamical properties. We develop a mathematical model that takes in
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8. Sodium current kinetics in cat atrial myocytes.
1. Na+ current kinetics were studied in isolated atrial myocytes from the adult cat using the single suction-pipette voltage-clamp technique. 2. Current-voltage and conductance-voltage relationships were similar to those described in other cardiac myocyte preparations. 3. Analysis of Na+ current decay using single-pulse, double-pulse and tail current measure
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9. Inactivation of the cardiac Na+ channels in guinea-pig ventricular cells through the open state.
1. The inactivation kinetics of the Na+ current were investigated using the improved oil-gap voltage clamp method in single ventricular cells of guinea-pig hearts. 2. Activation of the Na+ current was observed on depolarization more positive than -50 mV from a holding potential of -100 mV, and inactivation was complete during these depolarizations. The time
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10. Appropriate procedures for the safe handling and pathologic examination of technetium-99m–labelled specimens
TECHNETIUM 99M MAY NOW BE USED TO IDENTIFY sentinel nodes for surgical excision in a growing number of cancer sites. The pathology specimens of these sentinel nodes and of any injected tumoural sites are radioactive. Consequently, specific clinical and laboratory procedures must be developed to handle these specimens safely. It is recommended that specimens
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11. Telomere Cap Components Influence the Rate of Senescence in Telomerase-Deficient Yeast Cells
Cells lacking telomerase undergo senescence, a progressive reduction in cell division that involves a cell cycle delay and culminates in “crisis,” a period when most cells become inviable. In telomerase-deficient Saccharomyces cerevisiae cells lacking components of the nonsense-mediated mRNA decay (NMD) pathway (Upf1,Upf2, or Upf3 proteins), senescence i
American Society for Microbiology.
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12. Thermal equilibration between the M and N intermediates in the photocycle of bacteriorhodopsin.
The stages in the photocycle of bacteriorhodopsin (BR) involving the M and N intermediates are investigated using a double pulse excitation method. A first (cycling) pulse at 532 nm is followed, with an appropriate time delay, by a second pulse (337, 406, 446, or 470 nm) which induces the M-->BR back-photoreaction. After depletion by the second pulse a repop