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Oxygen transfer parameters and oxygen uptake rates revisited
Journal of Environmental Science and Health, Part A, 2019This paper provides a review of the essential equations and parameters that are used to design bioreactor aeration systems. Major objectives were to determine if the log-deficit method (LDM) and non-linear regression method (NLRM) yielded different results for the volumetric oxygen mass transfer coefficient (KL a)T and dissolved oxygen (DO) saturation ...
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Control of Oxygen Uptake during Exercise
Medicine & Science in Sports & Exercise, 2008Other than during sleep and contrived laboratory testing protocols, humans rarely exist in prolonged metabolic steady states; rather, they transition among different metabolic rates (V O2). The dynamic transition of V O2 (V O2 kinetics), initiated, for example, at exercise onset, provides a unique window into understanding metabolic control. This brief
David C, Poole +3 more
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Oxygen uptake by Serratia marcescens
Zeitschrift für allgemeine Mikrobiologie, 1975AbstractOxygen uptake was studied in cell suspensions of Serratia marcescens BIZIO supplied with various types of substrates. Of the polyols provided as substrates glycerol was the best stimulant of oxygen uptake followed by D‐mannitol and sorbitol. D‐xylitol and meso‐inositol stimulated oxygen uptake only after a long lag. The hexose sugars as well as
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The relationship between oxygen demand, oxygen uptake, and oxygen supply
Intensive Care Medicine, 1990Results of the relationships between oxygen supply, demand, and uptake can be used to interpret cardiac output values, identify types of acute circulatory failure, guide attempts to improve cellular function, and thus prevent the development of multiple organ failure and death. Five steps in the interpretation of cardiac output values are recommended: (
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Sports Medicine, 1997
For exercise modalities such as cycling which recruit a substantial muscle mass, muscle oxygen uptake (VO2) is the primary determinant of pulmonary VO2. Indeed, the kinetic complexities of pulmonary VO2 associated with exercise onset and the non-steady state of heavy (> lactate threshold) and severe [> asymptote of power-time relationship for high ...
D C, Poole, R S, Richardson
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For exercise modalities such as cycling which recruit a substantial muscle mass, muscle oxygen uptake (VO2) is the primary determinant of pulmonary VO2. Indeed, the kinetic complexities of pulmonary VO2 associated with exercise onset and the non-steady state of heavy (> lactate threshold) and severe [> asymptote of power-time relationship for high ...
D C, Poole, R S, Richardson
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Oxygen Uptake Efficiency Slope
2010The oxygen uptake efficiency slope (OUES) has been proposed as a useful, objective, non effort-dependent and submaximal index of cardiorespiratory functional reserve by Baba and colleagues (1996). The OUES corresponds to the rate of increase in oxygen uptake (VO2) in response to the logarithmic transformation of ventilation (VE) during an incremental ...
Pichon Aurélien +1 more
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Oxygen Uptake by Illuminated Maize Leaves
Nature, 1969EFFICIENT apparent photosynthesis and high rates of accumulation of dry matter in maize and other tropical grasses have been attributed to a lack of respiratory activity during illumination. Low CO2 compensation concentrations1,2, absence of a post-illumination CO2 burst3,4 and lack of CO2 release to CO2-free air5,6 support this contention. By contrast,
W A, Jackson, R J, Volk
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Pulmonary oxygen uptake kinetics
2017Abstract The pulmonary oxygen uptake (pV̇O2) kinetic response to exercise provides valuable non-invasive insight into the control of oxidative phosphorylation and determinants of exercise tolerance in children and adolescents. Few methodologically robust studies have investigated pV̇O2 kinetics in children and adolescents, but age- and ...
Alan R Barker, Neil Armstrong
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Oxygen Uptake by Nanorchestes antarcticus (Acari)
Oikos, 1976Oxygen consumption rates of the minute terrestrial mite, Nanorchestes antarcticus Strandtmann were measured at +5?C with a Cartesian Diver microrespirometer. Individual respiration rates were in the range 0.156 (deutonymph) to 1.135 (tritonymph) x 10-3 p1 02 ind-lh-1.
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Anomalous oxygen uptake by flowing blood
Annals of Biomedical Engineering, 1973It is found that oxygen uptake by whole blood flowing in rectangular channels greatly excedes theoretical predictions, despite the fact that such predictions are accurate when used with other channel geometries. An “optimum” rectangular channel aspect ratio for oxygen uptake improvement, relative to theory, is found and the possible use of the ...
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