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 12 of 12 for “"Rate of disappearance"”.
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Competing reaction pathways in the photochemical reactions of metal carbonyl compounds
The photochemical reaction of Mn$\sb2$(CO)$\sb{10}$ with HSnBu$\sb3$ has been studied by continuous photolysis. Sunlamp irradiation of a CO-saturated hexane solution of Mn$\sb2$(CO)$\sb{10}$ and HSnBu$\sb3$ results in formation of HMn(CO)$\sb5$ and Bu$\sb3$SnMn(CO)$\sb5$ in equimolar quantities. …
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Absorption and utilization of oligosaccharides by Cellvibrio gilvus
The ability of a cellulolytic bacterium Cellvibrio gilvus, to absorb and utilize members of the cellulose oligosaccharide series was investigated. Resting cell suspensions prepared from 24-hour cultures were incubated with the cellulodextrins. At various times samples were removed from the …
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Chemolithotrophic nitrate dependent growth of Rhizobium japonicum on carbon monoxide and its relationship to hydrogenase activity
Anaerobic chemolithotrophic growth of Rhizobium japonicum occurred in the presence of carbon monoxide with nitrate serving as the electron acceptor. Under conditions where the atmospheric concentrations of CO were varied; the cells grew in up to 50% (v/v) CO. Optimum growth was observed in the …
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IRON OVERLOAD AND BIRTH DEFECTS
Large, intravenous doses of iron-dextran are teratogenic in a number of laboratory species (M Phil). To elucidate the mechanism, studies were performed in rats and rabbits to identify possible maternal, placental and foetal sites of action. Maternal toxicity, manifested by bodyweight depression, …
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A study of the vapour phase pyrolysis and alkaline hydrolysis of chloroform
The decomposition of chloroform at 510˚C was investigated in a continuous flow system, using nitrogen as the carrier gas. The main products of the reaction were hydrogen chloride, tetrachloroethylene, pentachloroethane and hexachloroethane; hydrogen and chlorine could not be detected. Neither the …
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Reliability of the Acetylene Single-Breath Method For Measuring Cardiac Output
… non-invasive techniques allow for measurement of the disappearance of a soluble inert gas as it diffuses across the blood-gas barrier in the lungs. The rate of disappearance of the gas is directly proportional to the flow of blood past the lungs and subsequently provides an estimate of …
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Electrochemical synthesis of polyesters and polyamides. A study of the polymerisation of lactams, lactones and the anhydride/propylene oxide system by direct electrolysis of their conducting solutions
… describe the electroinitiated polymerisation of phthalic anhydride/propylene oxide, maleic anhydride/propylene oxide, caprolactam, laurolactam and E-caprolactone in N,N-dimethylformamide (DMF), acetonitrile and tetrahydrofuran (THF) using alkali metal salts or quaternary ammonium salts as …
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Availability of zinc from an amino acid chelate in Zn depleted pigs
… study was conducted to compare the availability of Zn from two Zn sources, an amino acid chelate and ZnSO₄. In three experiments, 78 Zn depleted and 24 Zn adequate pigs were used. Pigs were depleted of Zn by feeding an isolated soy protein, semi purified diet containing 17 ppm Zn. Of the 78 …
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Potential metabolic effect of sucralose following an oral glucose load in subjects with obesity and normal-weight subjects
… with obesity who are not regular consumers of NNS. However, studies in normal-weight adults, none of which control for use of NNS, found sucralose does not affect insulin responses to the ingestion of glucose or other carbohydrates. The objectives of the current study are to determine if …
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Ruminal Degradation of Polyhydroxyalkanoate and Poly(butylene succinate-co-adipate)
The occurrence of plastic impaction in ruminants is a growing concern. As indiscriminate feeders, cattle may consume plastic foreign materials incorporated into their diets and it is currently estimated that 20% of cattle contain plastic foreign materials in their rumen. These materials are …
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Nutritional constraints to lamb growth at pasture
… early weaned lambs grazing pure species swards of Rere lucerne (Medicago sativa, L), Huia white clover (Trifolium repens, C), Ruanui perennial ryegrass (Lolium perenne, R) and Matua prairie grass (Bromus catharticus, P). A study of the factors regulating intake was undertaken with these young …
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Characteristics and the regional variation of meteorological disaster-attributed mortality in Korea
… meteorological disasters makes up a crucial part of the influences of climate change on health. Previous studies on meteorological disasters, however, have mainly focused on economic losses and have provided poor analyses of human impact, including the causes of death and the identification of …