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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"Respiratory quotient"”.
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Respiratory quotient during metamorphosis of Hyla regilla tadpoles
<p>Metamorphosis may be defined as postembryonic developmental changes in non-reproductive structures of an organism. Such changes anticipate changes in the organism's environment (Frieden, 1961). Metamorphosis of amphibian larvae is dependent on the thyroid hormone in the circulating body fluid, …
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The specific dynamic action of carbohydrate, fat and protein in five women
… for oxygen and carbon dioxide. Changes in the respiratory quotient and Cal. per square meter of body surface, with relationship to time of ingestion of each pure compound were studied. There was a general trend for subjects with higher basal energy metabolism to have greater increases in the …
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Effects of Supplemental Ascorbic Acid on Energy Conversion and Performance of the Domestic Fowl Exposed to High Ambient Temperatures
… as indicated by the AA-induced shift in the respiratory quotient towards 0.70. Further experiments need to be conducted to determine whether this shift in the respiratory quotient reflects an increase in gluconeogenesis and uric acid formation or lipid utilization or both. Supplemental AA …
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Association of Fat Oxidation and Insulin Resistance in Prepubertal Children
… participated in indirect calorimetry to obtain respiratory quotient (RQ) and a blood test to obtain fasting insulin and glucose to calculate IR by homeostatic model assessment (HOMA). A subset (n=16) participated in Frequently Sampled Intravenous Glucose Tolerance Testing (FSIGTT) to obtain …
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Evaluation of nutritional needs in total parenteral nutrition based on non-protein calories versus total calories
… (three in each group). Nitrogen balance, respiratory quotient, prealbumin, blood glucose, and triglycerides were measured. Insufficient data were collected to support or dispute the superiority.
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The Effects of Altered Growth Hormone Signaling on Murine Metabolism
… was tested by monitoring oxygen consumption, respiratory quotient, and heat production. Intriguingly, long-lived mice have increased oxygen consumption, and decreased respiratory quotient; while short lived mice had opposite effects. These data indicate that decreased GH signaling associates …
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Some Aspects of Carbohydrate Metabolism in the Cercariae of SCHISTOSOMA MANSONI Sambon, 1907
… <sup>-4</sup> μl ± 4.6 x 10 <sup>-4</sup> μl. A respiratory quotient of 1.9 ± 0.08 was obtained.</p>
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The Effect of Moderate Physical Activity on Resting Fat Oxidation
… minutes on a treadmill at about 50% VO2peak. The respiratory quotient (RQ) was measured first thing in the morning on three occasions: following a day without physical activity (baseline), following a day with a 30-minute walk, and following a day with a 60-minute walk. RQ significantly decreased …
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Room Calorimetry as a Method of Measuring Metabolic Flexibility
… is commonly measured as the change in respiratory quotient (RQ) from the fasted state to the insulin-stimulated state. This measurement is performed using a hyperinsulinemic-euglycemic clamp and hood calorimetry. A study was performed to evaluate if room calorimetry alone could provide …
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A Contravention of Established Principles of Interspecific Allometric Metabolic Scaling in Developing Silkworms, Bombyx Mori.
… production as a function of body mass; the respiratory quotient; the function of the silk cocoon; and body composition were investigated for each distinct developmental stage of the silkworm, Bombyx mori. Whole animal O2 consumption in Bombyx ranged from 0.00064 + 0.000047 ml O2 .hr-1 at …
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Toward the Optimal Waveform for Electrical Stimulation
… carbon dioxide production (VCO<sub>2</sub>), respiratory quotient (RQ), and galvanic skin resistance (GSR) were recorded for a one- to two-minute baseline, during each four-minute contraction, and for a five minute recovery period. A contraction equal to 10% of the MVC was unable to be …
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Energy Flow in a Floodplain Aquifer Ecosystem
… showing a U-shaped response to oxygen. System respiratory quotient (RQ) ranged from ≈ 0 to 9.5, indicating a significant contribution of anaerobic production to system energy flow. We documented multiple lines of evidence for DOC (soil, river) and buried POM carbon sources, however POM was by …
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Energy Flow in a Floodplain Aquifer Ecosystem
… showing a U-shaped response to oxygen. System respiratory quotient (RQ) ranged from ≈ 0 to 9.5, indicating a significant contribution of anaerobic production to system energy flow. We documented multiple lines of evidence for DOC (soil, river) and buried POM carbon sources, however POM was by …
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The effect of early versus late enteral feeding on the hypermetabolic response of the paediatric burned patient
… (EEE) and calculated energy expenditure, (3) the respiratory quotient (RQ), (4) the intestinal permeability and (5) the clinical outcome. Methods: The children were assigned to either the EEF or LEF group. Nine patients in each study group completed the study successfully, with similar median ages …
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Function of limited sorbitol oxidation in Gluconobacter oxydans
… in the growth medium. These bacteria have a high respiratory quotient which is believed to result from oxidations by these dehydrogenases. These organisms grow and survive at pH values as low as 2.5 leading to speculation that their membrane-bound dehydrogenase activity provides the rapid electron …
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Acute Effects of Acetazoleamide (Diamox) Administration on Pulmonary Carbon Dioxide Exchange in Humans
… with a transient hyperpnea and a fall in respiratory quotient secondary to a decrease in carbon dioxide output.</p> <p>These data are interpreted as indicating a definite. dose-related effect of acetazoleamide upon carbon dioxide output and ventilation in humans. The acute effects of the …
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Whole-Body Metabolic Flexibility is Discordant with Skeletal Muscle Metabolism
… skeletal muscle fiber type. The change in the respiratory quotient during a hyperinsulinemic-euglycemic clamp is a classical approach towards assessing metabolic flexibility; we found that this was not associated with metabolic flexibility when measured as the change in palmitate oxidation in …
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Agitation, mixing and mass transfer in simulated high viscosity fermentation broths
… dioxide production rate), were used to provide a respiratory quotient, the value of which can be linked to the degree of gas-liquid mixing in the vessel. Measurement of point values of the liquid phase oxygen concentration is also used to indicate the degree of liquid mixing attained. The …
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Catabolic substrate utilization patterns: varying humidity and dietary regimens in the American cockroach Periplaneta americana (L.) (Dictyoptera: Blattidae)
… experiments were conducted to monitor changes in respiratory quotient (RQ), oxygen quotient (QO₂), food and water consumption and body weight. Also, a series of radiolabel experiments, utilizing injected ¹⁴C-glucose and ¹⁴C-palmitic acid, were conducted to determine radiolabel content (after …
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Energy metabolism and aging
… (increased oxygen consumption and decreased respiratory quotient). To date, however, few studies have been directed at furthering our understanding of the possible mechanism(s) by which Ames dwarf mice have altered energy metabolism. The goal of the studies presented in this dissertation is …
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