Global ETD Search
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 102 for “"metabolic rates"”.
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A comparison of resting metabolic rates among cardiovascular fit, muscularly fit, and sedentary men
Resting metabolic rate (RMR) was studied in 29 cardiovascularly-trained (CV), resistance-trained (WT), and sedentary men (Sed) between the ages of 18 and 35 years. The hypothesis was that CV (n = 9) and WT (n = 10) would have higher resting metabolic rates than Sed (n = 10). RMR was measured by …
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Influence of Physical Stress, Sex, and Body Size on Metabolic Rates of Ozark Zigzag Salamanders, Plethodon Angusticlavius
… (SVL ≥ 32 mm), stressed individuals had higher metabolic rates, but there was no significant effect of sex or significant interaction between sex and treatment. For small salamanders (SVL < 32 mm), there was no significant effect of treatment; sample sizes of males were too small to allow for …
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Influence of Feeding History on Metabolic Rates in Fishes: Evidence for Metabolic Compensation in Largemouth Bass (Micropterus salmoides)
… other factors are known to influence standard metabolic rate of fishes. Factors such as salinity, stress, water toxicity (e.g., heavy metals), diel periodicity, and stock differences can have positive and/or negative effects on oxygen consumption in fishes. Although they can be significant, …
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The interactions of Propafenone and its enantiomers with the major human forms of cytochrome P450 in terms of inhibition and metabolic rates
… monitored using the following fluorogenic substrates: CYP2C19/ CYP1A2 – CEC; CYP2D6 – AMMC; CYP3A4 - BFC. IC50 values were calculated and compared to those of control inhibitors (CYP2C19 – Tranycylpromine; CYP2D6 – Quinidine; CYP3A4 – Ketoconazole ; CYP1A2 - Furafylline). In vitro metabolism was …
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DETERMINATION OF STANDARD AND FIELD METABOLIC RATES IN TWO GREAT LAKES INVADING FISH SPECIES: ROUND GOBY (NEOGOBIUS MELANOSTOMUS) AND TUBENOSE GOBY (PROTERORHINUS SEMILUNARIS)
The dawn chorus is a bout of increased song output performed by birds prior to sunrise during the breeding season. Although nearly ubiquitous among avian species, the dawn chorus is poorly understood compared to daytime song. Little is known about how extrinsic variables influence dawn chorus …
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Ecological energetics of Eudyptes penguins at Marion Island
… and moulting cycles at the island. Resting metabolic rates, calculated from lowest, stable rates of oxygen consumption over 24 h, averaged 25 % greater than basal metabolic rates predicted from allometric equations. Body temperatures of the penguins and the relationships between metabolic …
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INFLUENCE OF EMBRYONIC METABOLIC RATE AND INCUBATION TEMPERATURE ON INCUBATION LENGTH VARIATION IN NEOTROPICAL PASSERINES
… two previously untested alternatives. Adult metabolic rates differ among species and similar differences among embryos may explain some variation in embryonic development rates; higher metabolism may allow faster cellular proliferation. Alternatively, metabolic rates are temperature …
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INFLUENCE OF EMBRYONIC METABOLIC RATE AND INCUBATION TEMPERATURE ON INCUBATION LENGTH VARIATION IN NEOTROPICAL PASSERINES
… two previously untested alternatives. Adult metabolic rates differ among species and similar differences among embryos may explain some variation in embryonic development rates; higher metabolism may allow faster cellular proliferation. Alternatively, metabolic rates are temperature …
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An investigation of some aspects of the transition from ectothermic to endothermic metabolism in vertebrates
The standard metabolic rates (SMRs) of 19 lizard and a single crocodilian species were measured at 30 "C, and 14 lizards at 37 "C. The basal metabolic rates (BMRs) of 8 mammal ian species were also determined using similar techniques. Although the inter-specific exponent relating BMR to body mass …
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Haemolymph sugar homeostasis and the control of the proventriculus in the honeybee (Apis mellifera carnica L.)
… doctoral thesis was to investigate how output (metabolic rate), input (food quality and food quantity) and internal state variables (haemolymph osmolarity and haemolymph sugar titer) affect each other and which of these factors controls the activity of the proventriculus in the honeybee. …
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The effects of augmentation of coarse particulate organic matter in hyporheic sediments
Metabolic and biogeochemical processes in hyporheic zones may depend on inputs of coarse particulate organic matter. Our research focused on how differing quantity and quality of organic matter affects metabolism and nutrient retention in the hyporheic zone of a low-order Appalachian stream. We …
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Intersexual Communication, Male Mate Preference, and Reproductive Energetics of the Polygynous Lizard, Anolis Carolinensis
… laboratory respirometry to determine resting metabolic rates, and the doubly-labeled water technique to determine field metabolic rates in free-ranging lizards. Resting metabolic rates were significantly influenced by body mass and season, but not sex. Field metabolic rates were significantly …
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The effects of individual-level differences in metabolic rate on foraging behavior and life history traits in honeybees
Metabolic rate is the rate at which organisms process energy and is often considered as the fundamental driver of life history processes. The link between metabolic rate and life history is primarily mediated via foraging, which shapes the energy acquisition patterns of an individual. This predicts …
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Behavioral and Metabolic Responses of the Southern Red-Backed Salamander (Plethodon Serratus) to Predatory Stimuli: Influence of Body Size
… ringneck snakes on the foraging behavior and metabolic rates of P. serratus. Individuals were exposed to substrate cues from ringneck snakes, five-lined skinks (nonpredator), and dechlorinated water. In the foraging study, I also examined the response to airborne cues. Larger salamanders (SVL …
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Ecophysiology and Food Web Dynamics of Spring Ecotone Communities in the Edwards Aquifer, USA
… or spring ecotones) may not exhibit reduced metabolic rates. I assessed metabolic and biochemical responses of a subterranean amphipod (Stygobromus pecki) that inhabits spring ecotones and compared these responses to their epigean relative. Results indicate that S. pecki, despite its …
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Conductive cooling and the metabolism of chicken hens in hot environments
… the second study, effect of roost temperature on metabolic rate of two strains of chicken hens in hot ambient environments was determined. Indirect open-circuit calorimetry was used to measure the metabolic rates. Water-cooled roosts eliminated the need for deploying energetically expensive …
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A review of the gait study of below-knee amputees
… self-selected walking speeds, and higher gait metabolic rates compared to intact individuals. The objective of this project is to obtain both qualitative and quantitative understanding on the gait of below-knee amputee through literature review and suggest some future research direction for the …
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Marine Biodiversity of Antarctic Hard Rock Communities: Species Biomass and Energy Use
… community structure did not vary seasonally, low metabolic costs due to slowed growth rates, reproduction, development with the ability to cease feeding for the winter months may explain the lack of change between season. Community structure did, however, vary with depth, which agrees with …
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Cold-Induced Metabolic Changes in Lean, NAG-1 Transgenic Mice
<p>Obesity is a multifaceted metabolic disorder with severe worldwide public health consequences. While obesity can often be treated using diet and exercise, there are complex genetic interactions driving obesity that don’t always respond to such changes. One important research focus for addressing …
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The Metabolic and Hormonal Effect of Prolonged Submaximal Exercise in Pregnancy and in Anorexia Nervosa (Essential Fatty Acids)
A study was conducted to evaluate the metabolic and hormonal response to moderate intensity exercise for 60 minute duration. The exercise response in two groups of subjects, pregnant women in the fourth month of gestation and patients with the eating disorder anorexia nervosa, were compared with a …
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