Respiratory Physiological Phenomena
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Estudo do funcionamento da ventilação assistida proporcional plus em um sistema pulmonar mecânico / Study of the functioning of the proportional assist ventilation plus in a mechanical lung model
INTRODUÇÃO: Ventilação assistida proporcional plus é um novo conceito de suporte ventilatório assistido que visa atuar de acordo com os níveis de esforço inspiratório, mecânica respiratória e níveis de porcentagem de apoio. A complexa interação entre esses fatores que comandam a sua função é de difícil interpretação na prática clínica.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/08/2012
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2. Inversion of the Bohr effect upon oxygen binding to 24-meric tarantula hemocyanin.
The Bohr effect describes the usually negative coupling between the binding of oxygen and the binding of protons to respiratory proteins. It was first described for hemoglobin and provides for an optimal oxygen supply of the organism under changing physiological conditions. Our measurements of both oxygen and proton binding to the 24-meric tarantula hemocyan
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3. Stereotactic extralemniscal myelotomy.
A procedure is reported in which radiofrequency lesions were stereotactically placed in the central cord region at the cervicomedullary junction to interrupt selectively the extralemniscal system. Physiological recognition of the target site was based upon the homuncular organization of the dorsal funiculi, which is analysed. Only subjective (segmentally unr
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4. Regulation of Glucose Transport and Metabolism in Thiobacillus novellus
To investigate the physiological basis of decreased rate of glucose utilization by Thiobacillus novellus in a mixotrophic environment (R. C. Perez and A. Matin, J. Bacteriol. 142:633–638, 1980), its glucose transport system was characterized and the modulation of this system as well as enzymes of glucose metabolism by the growth environment was examined. U
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5. Breath-by-breath estimate of alveolar gas transfer variability in man at rest and during exercise.
1. Breath-by-breath (BB) oxygen and carbon dioxide transfer (VO2 and VCO2) at the mouth, together with respiratory pattern, were determined over sequences of 100 consecutive breaths in six subjects at rest and during cycloergometric exercise (75 W). 2. BBVO2 and VCO2 at alveolar level were calculated taking the changes of pulmonary gas stores throughout each