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 170 for “"Radioactivity"”.
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Polonium-210 radioactivity in Lake Mead fish
… This study was directed toward determining the radioactivity levels of {dollar}\sp{210}{dollar}Po in Lake Mead fish, particularly catfish, striped bass and threadfin shad. The radioactivity was analyzed in individual organs and tissues for comparisons with the reported concentrations of some …
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The emotional radioactivity behind conflict in psychoanalytic institutions
The aim of this research is to explore the unconscious elements that fuels the ‘radioactive atmosphere’ of psychoanalytic institutions - unconscious sources of the chronic conflicts that sometimes plague the relationships between members of psychoanalytical societies and obscure the path of a …
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Studies of alpha-radioactivity in the marine environment
This dissertation deals with the alpha-radioactivity in the marine environment around South Africa, and the published literature relating to alpha-emitting nuclides in sea water and in marine organisms is surveyed in Chapter 1. As a first step in the investigation, the total alpha-activity of some …
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Gender, Politics, and Radioactivity Research in Vienna, 1910-1938
… could it mean to be a physicist specialized in radioactivity in the early 20th century Vienna? More specifically, what could it mean to be a woman experimenter in radioactivity during that time? This dissertation focuses on the lived experiences of the women experimenters of the <i>Institut für …
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TARGETING A CANCER-ASSOCIATED BIOMARKER WITH DIAGNOSTIC AND THERAPEUTIC RADIOACTIVITY
Our objective is to exploit a ligand-based delivery system for targeting diagnostic and therapeutic agents to cancers expressing IL13Ra2, a tumor-restricted plasma membrane receptor overexpressed in GBM and other malignancies. Based on prior work, we designed a novel IL13Ra2-Targeted Quadruple …
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A procedure for the estimation of total radioactivity in water
<p>One of the essential duties of the State of California Department of Civil Defense in times of nuclear weapon attack will be radiological monitoring. The workers in this field will operate from a mobile laboratory truck, equipped with radiation counters and meters, but containing only the …
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Radioactivity of Fossil Fuel Waste Products and Associated Environmental Implications
… wells. This dissertation characterizes the radioactivity associated with CCRs and OGW and further investigates the use of this radioactivity as a tracer and timer of contamination, particularly from OGW following its accidental or intentional release to the environment. </p><p>232Th and its …
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Analysis of the MIT research reactor fission product and actinide radioactivity inventories
The current analysis of the MITR core radioactivity inventory eliminates unnecessary assumptions made in previous estimates of the inventory, and revises the list of contributory isotopes to include all actinide and fission product isotopes necessary for a proper accident source term calculation. …
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Natural radioactivity in soils of the Walvis Bay - Henties Bay coastal area, Namibia
… radionuclides in the soils and the associated radioactivity may be high in some towns in the area. It is therefore important to study the concentrations of radionuclides and the radioactivity in the soils of the major towns in the area. In this study, the concentrations of the radionuclides …
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Characterisation of natural radioactivity in Karoo Basin groundwater prior to shale gas exploration
… the need to obtain baseline data on natural radioactivity in Karoo groundwaters. The Karoo Basin groundwater radiological baseline developed through this study could serve as a reference to research potential future radiological contamination effects due to hydraulic fracturing. The major …
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Natural alpha-radioactivity in bone, liver and blood samples from the various species
In this thesis, samples from the various species are studied for alpha-radioactive content. The experimental technique used is one of thick source "total" alpha counting with "fast pair" scaling enabling separation of "Thorium" series contribution. A study of the change in count rate over a time …
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An evaluation of the natural radioactivity in the soils of Okahandja and Karibib, Namibia
The natural radioactivity and associated hazards in the soils of the towns of Karibib and Okahandja have been studied by gamma spectroscopy. Each town was divided into ten geographical areas and five soil samples were collected across each area. These samples were processed and placed in …
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In-situ gamma-ray mapping of environmental radioactivity at Ithemba Labs and associated risk assessment
… following up on June 2004, the Environmental Radioactivity Laboratory (ERL) of /Themba LABS performed in-situ and ex-situ measurements of environmental radioactivity on the /Themba LABS (/TL) site. The ERL's Multi-Element-Detector-for-Underwater-Sediment-Activity (MEDUSA) and high-purity …
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The Calculation of Dose Kernels for Use During conditions of Accidental Radioactivity Release to the Atmosphere
Made available in DSpace on 2017-07-06T18:59:22Z (GMT). No. of bitstreams: 3 Wemlinger_Joseph_C_MS.pdf: 47322230 bytes, checksum: f59245157fc0458bd1a0a212e61969cf (MD5) Wemlinger_Joseph_C_MS_ABS.pdf: 346531 bytes, checksum: ae1c288f3413ebe2e024f6bf571720da (MD5) license.txt: 4813 bytes, checksum: …
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Assessment of natural radioactivity in the soils of the Ohorongo Cement plant and the town of Otavi, Namibia
The activity concentrations of the naturally occurring radionuclides 238U, 232Th, and 40K in soil samples collected from the Ohorongo Cement plant and the town of Otavi, Namibia have been determined using a High-Purity Germanium (HPGe) detector. In addition, an assessment of the radiological …
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Radioactive Well Logging
<p>Radioactivity properties of many substances make radioactivity well logging possible. The Gamma Ray Curve records natural radiation; the Neutron Curve records induced radiation. In general the Gamma Ray Curve records formation types while the Neutron Curve records fluid content of the rocks. The …
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Dissipation and Leachability of Formulated Chlorpyrifos and Atrazine in Organically-amended Soils
… than 4% of 14C-atrazine was mineralized and more radioactivity was recovered from amended treatments than unamended treatments as 14CO2. The major portion of radioactivity (62%) was associated with physisorbed atrazine represented by the ethylacetate extract I from unamended treatments while only …
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