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 150 for “"natural conditions"”.
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Reactions of Organolead Compounds Under Natural Conditions
… concentration and reaction of such compounds in natural waters is of great importance. Little data is available on the concentration and properties of organolead compounds in the environment, and the information which is available is concerned mainly with the concentration of tetra-alkyl lead …
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Genetic analysis of Ximenia Americana under natural conditions
… comparison to model species A. thaliana under natural conditions. This observation was independently confirmed with PCR amplification of the following orthologous genes using X. americana genomic DNA: AT4G15910.1, SAD2, HXK1, ACC and ERF/AP2. Given the lack of genomic sequence information in X. …
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Effects of Aldrin on Young Pheasants Under Semi-Natural Conditions
… on young pheasants were studied under semi-natural conditions in four one-acre enclosures during the summer of 1968. The center two-thirds of each plot was planted in corn; remaining peripheral cover was maintained in smooth brome and alfalfa. Prior to planting, center portions of two plots …
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A study of the winter survival of bobwhite quail under natural conditions
no abstract provided by author
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Equilíbrio e vibrações induzidas por vórtices de "risers" de perfuração
… to select adequate risers for places with usual natural conditions. The selection takes into account the riser tension, the natural ·conditions and the pertinent drilling parameters. Then, a brief study about free vibrations is presented. Finally, the analysis of transverse vibrations induced by …
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Die Fragmentierung hochviskoser Magmen
… range of the experiments is close to the natural conditions of dome collapse. The experiments were performed at temperatures up to 950°C. The initial pressure difference in the range of 10 to 250bar is in good agreement to the natural conditions. In addition to the analysis of the …
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Characterization of botryococcus sp. and identification of carbohydrates metabolic related enzymes toward lipid production
… leading to lipid production in B. sp. under natural conditions were also identified through one-dimensional gel electrophoresis followed by proteomic mass spectrometry (LC-MS) and database searching. Finally, the carbohydrate to lipid metabolic pathway of B. sp. cultivated under natural …
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Lipoxygenase Activity in Diatoms : A New Tool to Study the Antiproliferative Effects of Diatoms on Copepod Reproduction
… metabolism in diatoms was studied under natural conditions during a bloom at sea, under semi-natural conditions during a mesocosm experiment, and in the laboratory, with special emphasis on <i>Skeletanema marinai</i>. The effect of diatom oxylipin production on copepod reproductive …
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Sinkholes in the marble and dolostone karst of Sylacauga, Alabama
… objectives of this research are: - to identify natural conditions in the study area which are associated in the literature with sinkhole development - to identify the study area's human activities, both current and historic, which are cited in the literature as being associated with accelerated …
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A motivational analysis of Chinese tourists to the United States: Push and pull motivations of travel to Las Vegas
… important pull factors were hedonism, image and natural conditions, convenience, and cleanliness. The derived push and pull factors were compared to the previous studies. Suggestions for future studies were presented.
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An Investigation of Spatial and Temporal Variability in Several of Montana's Reference Streams: Working Toward a More Holistic Management Strategy
… activities have substantially altered natural stream temperature regimes, impairing these systems’ ability to maintain ecological integrity. Thermal degradation often can be attributed to a variety of human activities, and global climate change, which has been accelerated by the demands …
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An Investigation of Spatial and Temporal Variability in Several of Montana's Reference Streams: Working Toward a More Holistic Management Strategy
… activities have substantially altered natural stream temperature regimes, impairing these systems’ ability to maintain ecological integrity. Thermal degradation often can be attributed to a variety of human activities, and global climate change, which has been accelerated by the demands …
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Investigation of temperature effects on subsurface attenuation of nitroaromatic compounds
… organic contaminants were degrading under natural site conditions. Recent research at Colorado State University has shown that maintaining soil temperatures ~5°C above natural site conditions substantially increases rates of anaerobic petroleum hydrocarbon degradation. The overarching goal …
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Toxicant-releasing substrates: a new method for delivering copper to microbial communities in SITU
… pollutants on periphyton communities under natural conditions are statistically flawed and/or potentially harmful to the ecosystems in which the studies are conducted. Toxicant-releasing substrates have been proposed to allow the delivery of different levels of chemical pollutants to …
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Ammonia mechanism: an experimental study of the part played by ammonia, fixed base and phosphate in the elimination of acid from the body
… more bearing on the fate of acid produced under natural conditions than is the case with some previous work.
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Design and implementation of the SBX1: a smart environment chamber for biological research and discovery
… humidity, and gas concentration to mimic natural conditions for cell survival and growth. Many incubators and live cell imaging systems exist as commercial products; however, they are prohibitively expensive, costing tens or hundreds of thousands of dollars depending on capabilities of the …
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Hydrology of Bishop Creek, Inyo County, California: An isotopic analysis
… streamflow that is less than that expected under natural conditions much of the year. Stream diversion for hydroelectric power production may have adverse effects on the riparian community. An isotopic study was employed to better understand the hydrology of the basin, estimate the volume of …
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Leakage of carbon dioxide from a simulated subseabed Carbon Capture and Storage reservoir: potential impacts on benthic biogeochemistry
… will be studied, as will the rate at which natural conditions are re-established upon cessation of the release.
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Primary Sex Reversal in Female <em>Betta splendens</em> following Treatments with Temperature and Trenbolone Acetate.
… in fish can occur as a result of disturbances in natural conditions or laboratory manipulations. Trenbolone Acetate (TBA), a synthetic anabolic-androgenic steroid used mainly in the cattle industry, was applied to female <em>Betta splendens</em>, a sexually dimorphic fish. Previously, females were …
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Wildfire and development : why stronger links to land-use planning are needed to save lives, protect property, and minimize economic risk
… of wildfires. Wildfire risk is based on both natural conditions, such as invasive species and climate change, and human development decisions that allow continued growth in fire-prone areas. This thesis examines the approaches to wildfire risk mitigation taken by six counties along the Front …
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