Persistent Situations
Mostrando 13-19 de 19 artigos, teses e dissertações.
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13. Self-excitation of a nonlinear scalar field in a random medium
We discuss the evolution in time of a scalar field under the influence of a random potential and diffusion. The cases of a short-correlation in time and of stationary potentials are considered. In a linear approximation and for sufficiently weak diffusion, the statistical moments of the field grow exponentially in time at growth rates that progressively incr
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14. Effect of rifampin and bacitracin on nasal carriers of Staphylococcus aureus.
Anterior nares cultures from 664 hospital personnel identified 165 (24.8%) as carriers of Staphylococcus aureus. Persistent carriers (17.8%) were identified and randomly assigned to one of four treatment groups: rifampin (600 mg once a day for 5 days), bacitracin ointment (topically applied three times a day for 10 days), combined rifampin and bacitracin, an
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15. Comparative Genotyping of Candida albicans Bloodstream and Nonbloodstream Isolates at a Polymorphic Microsatellite Locus
Molecular typing studies have shown that the predominant form of reproduction of Candida albicans is clonal and that, in a majority of situations, persistent or recurrent infections are due to a unique strain. Characterization of distinct subpopulations and correlation with clinical features may thus be important to understanding the pathogenesis of candidia
American Society for Microbiology.
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16. Venovenous perfusion in ECMO for newborn respiratory insufficiency. A clinical comparison with venoarterial perfusion.
Venoarterial (VA) extracorporeal membrane oxygenation (ECMO) has been successful in the treatment of newborns less than 1 week of age and greater than 2000 gm birthweight with respiratory failure resistant to current medical and surgical management. While VA ECMO supports the heart as well as the lungs, it has the disadvantage of requiring carotid artery lig
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17. Glucocorticoid receptor and protein/RNA synthesis-dependent mechanisms underlie the control of synaptic plasticity by stress
Learning and memory are exquisitely sensitive to behavioral stress, but the underlying mechanisms are still poorly understood. Because activity-dependent persistent changes in synaptic strength are believed to mediate memory processes in brain areas such as the hippocampus we have examined the means by which stress affects synaptic plasticity in the CA1 regi
The National Academy of Sciences.
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18. Prolonged inhibition of a spinal reflex after intense stimulation of distant peripheral nerves in the decerebrated rabbit.
1. In decerebrated rabbits, repetitive stimulation of the high-threshold afferents of the left common peroneal (CP) nerve evokes prolonged depression of the sural-gastrocnemius medialis (GM) reflex recorded in the same limb. This inhibition is antagonized by co-administration of the opioid antagonist naloxone with the alpha 2-adrenoceptor antagonist idazoxan
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19. Nested Duplex PCR To Detect Bordetella pertussis and Bordetella parapertussis and Its Application in Diagnosis of Pertussis in Nonmetropolitan Southeast Queensland, Australia
A duplex PCR to detect Bordetella pertussis and Bordetella parapertussis was developed with the insertion sequences IS481 (B. pertussis) and IS1001 (B. parapertussis) and evaluated with specimens from 520 consecutive patients presenting with possible pertussis. No culture-positive–PCR-negative results occurred, giving the method a sensitivity of 100%. For
American Society for Microbiology.