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  • Utilization for a triple-layer phoswich detector for beta spectral stripping

    Creator:
    Alkhudhiri, Bandar
    Abstract:
    To quantify the relative activity contributions of beta emitters in mixed emission source spectra, the triple-layer phoswich detector was modeled to generate beta energy absorption spectra from mixed beta sources. These mixed sources include four pure beta emitters (C-14, Tc-99, Sr-90, and Y-90). Monte Carlo N-Particle (MCNP) computer code was...
    Resource Type:
    Masters Thesis
    Full Text:
    . Title: Utilization for a Triple-Layer Phoswich Detector for Beta Spectral Stripping. Abstract

  • Public health impact assessment : a science-based methodology for comparing biological agents

    Creator:
    Appt, Julia R.
    Abstract:
    Humans have long suffered the effects of disease causing biological agents. Today bioterrorism appears to be on the rise while at the same time global and ecological changes have resulted in the emergence of new diseases. Potential repercussions of an epidemic pose immense challenges requiring a methodical approach to align...
    Resource Type:
    Masters Thesis
    Full Text:
    Occupational Safety Management presented on October 7, 2009. Title: Public Health Impact Assessment, A Science

  • Low-Dose Ionizing Radiation Solid Cancer Risk in Adults : Radiation Hormesis Study Design

    Creator:
    Alhussan, Abdulaziz S.
    Abstract:
    Cancer risk at low-dose ionizing radiation has been the subject of great scientific controversy in the past century. The clear majority of national and international radiation protection regulators adopt the linear no-threshold (LNT) model based on the atomic-bomb survivors Life Span Study (LSS) for solid cancer risk assessment. The LNT...
    Resource Type:
    Masters Thesis
    Full Text:
    -bomb survivors Life Span Study (LSS) for solid cancer risk assessment. The LNT model assumes a linear

  • Monte Carlo derived absorbed fractions in a voxelized model of a rainbow trout

    Creator:
    Hess, Catherine A.
    Abstract:
    The International Commission on Radiological Protection (ICRP) has modeled twelve reference animals and plants (RAPs) with simple geometric shapes to be used when estimating radiation dose to non-human biota (NHB). In recent years, there has been interest in creating more realistic models in order to better understand the radiation interactions...
    Resource Type:
    Masters Thesis
    Full Text:
    throughout this process. At Oregon State University, I would like to thank Dr. Kathryn Higley for

  • SSPM-based optical fiber radiation dosimeter

    Creator:
    Konnoff, Daniel C.
    Abstract:
    Current state-of-the-art environmental, clinical, and in-vivo radiation sensing systems utilizing various inorganic and tissue-equivalent plastic scintillators are not user friendly, suffer from electron-beam-generated noise, and are difficult to deploy successfully for real-time dosimetry. A robust, real-time detection system using different scintillating materials coupled to solid-state detectors by optical fibers is...
    Resource Type:
    Masters Thesis
    Full Text:
    . Kathryn Higley for giving me the opportunity to become an RHP student, and for helping me transition to

  • Geochemical tracers of Arctic river waters

    Creator:
    Guay, Christopher K. H.
    Resource Type:
    Dissertation
    Full Text:
    members of my committee, Dr. Robert Collier, Dr. Kathryn Higley, Dr. Robin Muench and Dr. Clayton Paulson

  • Radiation dose and risk in interventional neuroradiology

    Creator:
    Magill, Dennise M.
    Abstract:
    BACKGROUND/PURPOSE: Exposure from medical radiation sources are on the rise in the United States. Often the highest potential source of radiation dose to patients and radiology staff occur during interventional radiology procedures performed using fluoroscopy and digital subtraction angiography (DSA) to provide image guidance in minimally invasive surgical procedures. Several...
    Resource Type:
    Masters Thesis
    Full Text:
    MATERIALS/METHOD: An investigation of Interventional Neuroradiology (INR) patient cases performed during a

  • A comparative evaluation of the health risks from minor actinide fission products

    Creator:
    Wilmot, Aaron
    Abstract:
    In consideration of the potential use of minor actinides in nuclear fuel, the fission products of several minor actinides (²³⁷Np, ²⁴¹Am, ²⁴²[superscript m]Am, ²⁴³Cm, ²⁴⁴Cm, ²⁴⁵Cm, and ²⁴⁶Cm) were evaluated and compared to the fission products of ²³⁵U. Available data from the Evaluated Nuclear Data File and the Nuclear Database...
    Resource Type:
    Masters Thesis
    Full Text:
      June 25, 2009.  Title: A Comparative Evaluation of the Health Risks from Minor Actinide Fission

  • Experimental shielding evaluation of the radiation protection provided by residential structures

    Creator:
    Dickson, Elijah D.
    Abstract:
    The human health and environmental effects following a postulated accidental release of radioactive material to the environment has been a public and regulatory concern since the early development of nuclear technology and researched extensively to better understand the potential risks for accident mitigation and emergency planning purposes. The objective of...
    Resource Type:
    Dissertation
    Full Text:
    you my friend. I would like to thank my doctoral advisory committee members; Dr. Kathryn Higley, Dr

  • Beta-particle backscatter factors and energy-absorption scaling factors for use with dose-point kernels

    Creator:
    Mangini, Colby D.
    Abstract:
    'Hot particle' skin dosimetry calculations are commonly performed using homogeneous dose-point kernels (DPK) in conjunction with scaling and backscatter models to account for non-homogeneous geometries. A new scaling model for determining the actual DPK for beta-particles transmitted by a high-Z source material has been developed. The model is based on...
    Resource Type:
    Dissertation
    Full Text:
    geometries. A new scaling model for determining the actual DPK for beta-particles transmitted by a high-Z