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 12207 for “"concentrations"”.
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Fluctuating concentrations in atmospheric dispersion
This thesis presents theoretical models and experimental results of average and instantaneous concentration measurements from a series of atmospheric dispersion experiments conducted under both unstable and stable meteorological conditions. The experiments were undertaken at two different sites, …
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Stress Concentrations in Three-Dimensional Electrostriction
Made available in DSpace on 2014-12-10T17:25:37Z (GMT). No. of bitstreams: 1 6612428.pdf: 1071869 bytes, checksum: b1f1bebfd84d5c64b7f2a150e89c1856 (MD5) Previous issue date: 1966
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Trace element concentrations in melanotic swine
… analysis were used to determine trace element concentrations in cancerous, noncancerous and normal swine skin samples and in non-cancerous and normal swine tissue samples. In-vivo x-ray fluorescence analysis was also used to determine trace element concentrations in cancerous, non-cancerous, …
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Prediction of Mississippi-Valley type ore fluid metal concentrations from solid solution metal concentrations in ore-stage minerals
… to form MVT deposits is knowledge of their concentrations in the ore fluids. Recent research aimed at determining the concentrations of Pb, Zn, and Ba in the ore fluids that formed the MVT deposits of the U.S. midcontinent, the type examples for the MVT deposit class, has focused on using …
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Comparison of concentrations in the breathing zone
The concentrations in the "breathing zone" were analyzed on three human subjects in simulating work conditions. The experiments were carried out in a wind tunnel having 40&feet; x 12&feet; x 9&feet; dimensions. Ethanol vapor mixed with nitrogen was used as a tracer gas. Samples were taken at the …
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Allergenic pollen concentrations in the United Kingdom
… the United Kingdom. Daily grass and birch pollen concentrations have been monitored during the course of the study (1992-1994) at the University of North London site. Retrospective pollen data of up to 30 years in length at London, Cardiff and Derby has been incorporated into the database, along …
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Evaluation of Concentrations in Penicillin Sensitivity Discs
Since the advent of antibiotics as chemotherapeutic agents, the importance of determining the sensitivity to these drugs of micro-organisms present in clinical specimens has become of prime importance. | Prior to Fleming's discovery of penicillin in 1929, and. its subsequent introduction into …
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Three-Dimensional Non-Axisymmetric Anisotropic Stress Concentrations
Unified explicit analytical solutions for the (non-axisymmetric) first and second boundary value problems of elasticity theory for a spheroidal cavity embedded in a transversely isotropic medium are presented. The analysis is based upon solutions of the homogeneous displacement equations of …
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Tear lacritin concentrations in canine keratoconjunctivitis sicca
… dog. Objectives: To determine if tear lacritin concentrations are decreased in canine eyes affected by KCS. Animals: 58 client-owned dogs (tear samples from 55 eyes with normal tear production and 55 eyes diagnosed with KCS). Methods: All eyes underwent an ophthalmic exam, including Schirmer …
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Observations of Fish Subjected to Various Salt Concentrations
No abstract prepared.
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Satellite constraints on surface concentrations of particulate matter
… aerosol optical depth (AOD) and surface concentrations. This dissertation explores how satellite observations can be used in conjunction with a chemical transport model (GEOS-Chem) to better understand this relationship. First, we investigate the seasonality in aerosols over the …
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Stress Concentrations Around Cutouts in Shells of Revolution
Made available in DSpace on 2014-12-04T23:11:10Z (GMT). No. of bitstreams: 1 6402864.pdf: 1970982 bytes, checksum: 4cca6a80bae2926bf0258e2890b4e038 (MD5) Previous issue date: 1963
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Diffusivity of tin in low concentrations in silver
Thesis: B.S., Massachusetts Institute of Technology, Department of Metallurgy, 1958
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Effects of Low Concentrations of Chloramphenicol on Bacterial Metabolism
Made available in DSpace on 2014-12-10T23:24:33Z (GMT). No. of bitstreams: 1 7414534.pdf: 7814477 bytes, checksum: 7a9297e97512cdcfc242e904002670ad (MD5) Previous issue date: 1974
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Prediction of nitric oxide concentrations during inflammation and carcinogenesis
… angiogenesis, or lymphangiogenesis. However, the concentrations of NO in inflamed tissues or during carcinogenesis are largely unknown. The objective of the research in this thesis was to predict NO concentrations in an inflamed colon and a cutaneous metastatic melanoma, two areas where NO has …
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The growth of E. coli at various phosphate concentrations
Accelerated eutrophication is becoming a major problem in relation to surface waters. Controversy has arisen as to its causes in different types of natural systems. Investigations were made of the stimulatory and limiting effects of phosphate on the bacterium E. coli in synthetic media. Growth was …
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Determining rare earth dopant concentrations in optical fibres and waveguides
… used as a means for determining the rare earth concentrations. The performance of rare earth-doped devices is dependent on many parameters, including the dopant concentration. Accurate modelling of such devices require knowledge of the dopant concentrations and/or dopant distribution. Current …
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