Index Catalog // ScholarsArchive@OSU

Application of autoradiographic techniques for contaminant distribution studies in soils

Creator:: Povetko, Oleg G.
Abstract:: In order to determine the physical location of contaminants in soil, two solidified soil "thin" sections, which preserve the undisturbed structural characteristics of the original soil, containing weapons-grade plutonium from the Rocky Flats Environmental Test Site were prepared. Two autoradiographic methods were used in radionuclide mapping: contact autoradiography using CR-39®...
Resource Type:: Dissertation
Full Text:: Application of autoradiographic techniques for contaminant

Improvements in the dosimetric models of selected benthic organisms

Creator:: Caffrey, Emily Amanda
Abstract:: The International Commission on Radiological Protection (ICRP) has modeled twelve reference animal and plant (RAP) species using simple geometric shapes in Monte–Carlo (MCNP) based simulations. The focus has now shifted to creating voxel phantoms of each RAP to advance the understanding of radiation interactions in nonhuman biota. The work contained...
Resource Type:: Masters Thesis
Full Text:: and higher energy beta particles; they are primarily of concern for chronic and acute external

Use of GIS software to map contaminant distributions and determine integrated dose for purposes of assessing impact to biota

Creator:: Myers, Margaret C.
Abstract:: The objective of this research was to estimate the radiological impact on various non-human biotas by the Fukushima Daiichi Nuclear power plant radiation release resulting from Japan's tsunami in March 2011 consistent with the recent recommendations of the International Commission on Radiological Protection. Soil concentration data given by Japan's Ministry...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Margaret C. Myers for

Determining the bioavailability of soil-associated radium using in vitro methodology

Creator:: Tack, Krystina M.
Abstract:: Soil that is contaminated with radioactive elements poses an exposure hazard to those whom may take up temporary or permanent residence on such a site. Of particular interest is the internal exposure from ingestion of this radioactive soil. Although most ingestion of soil is inadvertent, usually being attached to foodstuffs...
Resource Type:: Masters Thesis
Full Text:: as a journal article for the Health Physics Society entitled "The Bioaccessibility of Low Level

Accounting for Heterogeneity Corrections in Breast Brachytherapy

Creator:: Rogers, Kevin L.
Abstract:: Purpose: Model-based dose calculation algorithms (MBDCAs) have become clinically available within the past several years in commercially available brachytherapy planning systems. This work investigates the application of a 510(k) approved MBDCA Acuros™ BV and establishes a reproducible method of validation. The research is broken into three primary research goals. The...
Resource Type:: Dissertation
Full Text:: .................................................................................. 70 Table 8. Comparison of Finite and Semi-Infinite Phantom for Low kV Energy ....... 84 Table 9

Establishment of concentration ratios for riparian and shrub steppe areas of the eastern Washington Columbia basin

Creator:: Napier, Jonathan Bamberger
Abstract:: Concentration ratios are used to determine the transfer of nuclides from soil to biota to fauna. Some nuclides have limited associated data though, this has not prevented predictions from being performed at sites without associated data. These ratios are site specific and are not fully applicable when applied to other...
Resource Type:: Masters Thesis
Full Text:: identity of the decaying atom based on the energy of emitted gamma particles. For analysis, the general

Development and Application of Voxelized Dosimetric Models for Biota : Characterization of the Uncertainty in the International Commission on Radiological Protection's Wildlife Dosimetry System

Creator:: Caffrey, Emily Amanda
Abstract:: A system for radiological dosimetry for nonhuman biota developed by International Commission on Radiological Protection (ICRP) relies on calculations that utilize the Monte Carlo simulations of simple, ellipsoidal geometries with internal radioactivity distributed homogeneously throughout. In this manner it is quick and easy to estimate whole-body dose rates to biota....
Resource Type:: Dissertation
Full Text:: account for the rabbit’s fur. The external value listed as a target is a measure of the amount of energy

Pine Tree Dosimetry: Development of Geometric and Compositionally Specific Sectional Models for Organ Dose Assessment

Creator:: Condon, Caitlin A.
Abstract:: Ideally, dosimetric models for pine trees will accurately reflect the doses to its critical organs. However, existing models (e.g. that in ICRP 108) for the pine tree are over simplified or solely focused on estimating doses to one specific organ, and none of the existing models attempt dosimetry to the...
Resource Type:: Dissertation
Full Text:: compositionally specific sectional models for organ dose assessment AN ABSTRACT OF THE DISSERTATION OF

An analysis of the Diablo Canyon Power Plant Radiological Environmental Monitoring Program sampling results from the Cal Poly, San Luis Obispo, dairy herd milk, post-Fukushima

Creator:: Treinen, Richard M.
Abstract:: This study focuses on iodine-131 detected in milk samples from the Dairy Science Unit at Cal Poly, San Luis Obispo, California following events at the Fukushima Dai-ichi Nuclear Power Plant in March of 2011. The samples were collected as part of the Diablo Canyon Nuclear Power Plant (DCPP) Radiological Environmental...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Richard M. Treinen for the

A method for predicting peak scanning detection efficiency of a cylindrical sodium iodide scintillation detector

Creator:: Duffy, William L.
Abstract:: Scanning surveys of building surfaces and land areas are performed with radiation detection equipment to identify areas of elevated radioactivity. To quantify the extent and magnitude of the contamination, follow-up radiation surveys and soil sampling are usually required. The ability to accurately quantify discrete locations or "hot particles" of contamination...
Resource Type:: Masters Thesis
Full Text:: experimental analysis of scanning detection efficiency with the Field Instrument for Detecting Low Energy

ScholarsArchive@OSU

Application of autoradiographic techniques for contaminant distribution studies in soils

Improvements in the dosimetric models of selected benthic organisms

Use of GIS software to map contaminant distributions and determine integrated dose for purposes of assessing impact to biota

Determining the bioavailability of soil-associated radium using in vitro methodology

Accounting for Heterogeneity Corrections in Breast Brachytherapy

Establishment of concentration ratios for riparian and shrub steppe areas of the eastern Washington Columbia basin

Development and Application of Voxelized Dosimetric Models for Biota : Characterization of the Uncertainty in the International Commission on Radiological Protection's Wildlife Dosimetry System

Pine Tree Dosimetry: Development of Geometric and Compositionally Specific Sectional Models for Organ Dose Assessment

An analysis of the Diablo Canyon Power Plant Radiological Environmental Monitoring Program sampling results from the Cal Poly, San Luis Obispo, dairy herd milk, post-Fukushima

A method for predicting peak scanning detection efficiency of a cylindrical sodium iodide scintillation detector

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