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Pulse reader for ionization chambers

Creator:: Boothe, Gary F.
Abstract:: A pulse reader for ionization chambers has been developed, tested, and calibrated. An insulated gate field effect transistor (IGFET) was used to detect the pulses and Victoreen Model 362 Pocket Chambers were used as ionization chambers. The energy dependence of the Victoreen Model 362 Pocket Chamber was determined to be...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Gary F. Boothe (Name) in

Dechlorination of p-chlorophenol on palladium based metal support catalyst

Creator:: Moore, Kelley A.
Abstract:: Disposal of chlorinated hydrocarbons is a major environmental concern due to the lack of a satisfactory means of safe remediation at all contaminated locations. Current technologies rely primarily on incineration, a process that can lead to dangerous byproducts such as dioxin. If the chlorine substituent can be removed prior to...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Kelley A. Moore for the degree of

Oxygen mass transfer and shear sensitivity studies during cultivation of Nicotiana tabacum var. Wisconsin 38 in a stirred-tank bioreactor

Creator:: Henderson, Kelley
Resource Type:: Masters Thesis
Full Text:: f o r P r i v a c y Oxygen Mass Transfer and Shear Sensitivity Studies during Cultivation of

The design, construction and calibration of a low-energy, low exposure-rate ionization chamber

Creator:: Clarke, Arthur Porter
Abstract:: A low-energy, low-exposure-rate, guarded-field ionization chamber system with a sensitive volume of approximately 1040 cm³ and an exposure-rate range from 60 mR/h to less than 0.5 mR/h was designed, constructed and calibrated. The calibration was effected by constructing and calibrating a 60 cm³ volume transfer chamber of similar design against...
Resource Type:: Masters Thesis
Full Text:: IONIZATION CHAMBER Abstract approved: Redacted for Privacy John P. Kelley 3 A low-energy, low-exposure

The design and construction of an ionization chamber to measure background radiation

Creator:: Weaver, Kenneth Earl
Abstract:: An ionization chamber was constructed, using a fiberglass wall sphere, for the purpose of measuring background radiation. The system consists of the fiberglass wall chamber, 38.85 liters in volume, air filled, not sealed, used in conjunction with a precision capacitor, nulling voltage supply and electrometer. It was calibrated against a...
Resource Type:: Masters Thesis
Full Text:: RADIATION Abstract approved: Redacted for privacy John P. Kelley An ionization chamber was constructed

Scattered radiation from bedside radiographic examinations

Creator:: Kellner, JoEllen Gretzinger
Abstract:: The purpose of this study was to investigate the distribution and magnitude of scattered radiation from a typical mobile radiographic examination as an aid in evaluating the potential health hazards of the scattered radiation. Also discussed are current radiation protection standards and recommendations for mobile radiography. A Manonite phantom represented...
Resource Type:: Masters Thesis
Full Text:: RADIATiUN FROM Bt D5IDE RADIOGRAPHIC EXAMINATIONS Abstract approved, Redacted for Privacy I. -Kelley The

A study of the thermal characteristics of x-ray tube housings

Creator:: Stovall, John Walter
Abstract:: The relationship of x-ray tube housing temperature to duty cycle was studied for a superficial therapy x-ray installation, a dental radiographic installation, and a rotating-anode medical diagnostic installation. Thermistors were used to measure the tube housing temperature at points selected to be representative of thermal conditions on the surface of...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGMENT The author wishes to express his sincere appreciation to Mr. John P. Kelley for his guidance

The distribution of leakage radiation from an unshielded diagnostic-type x-ray tube housing

Creator:: Gragg, Royce Lynn
Abstract:: The objective of this study was to determine the distribution of leakage radiation from two unshielded diagnostic-type X-ray tube housings. This information was used to determine the shielding required in the housings to bring them into compliance with the definition of a diagnostic-type protective tube housing, as set forth by...
Resource Type:: Masters Thesis
Full Text:: TUBE HOUSING Abstract approved: Redacted for Privacy John P. Kelley The objective of this study was

Evaluation of high-altitude color infrared photography for forest inventory

Creator:: Kelley, Thomas H.
Abstract:: High-altitude color infrared photography is found to be an effective tool for forest inventory in the Umpqua National Forest of southwestern Oregon. Intelligent resource management requires the rapid, accurate, and economical inventory results that can be supplied by remote sensing. Color infrared film is shown to possess properties that make...
Resource Type:: Capstone Project
Full Text:: FOREST INVENTORY by THOMAS H. KELLEY A RESEARCH PAPER submitted to THE DEPARTMENT OF GEOGRAPHY in

Stream channel stability and sensitivity to landscape history and land use changes in Kelley Creek, Portland, Oregon

Creator:: Murphy, Yarrow M.
Abstract:: This study examines stream channel erosion processes in a small urbanizing watershed influenced by deposits of the Columbia Basin catastrophic floods: Kelley Creek, a 12-km² tributary of Johnson Creek, located just east of Portland, Oregon. Information on landscape history, stream channels, and sediment dynamics was compiled. The effects of future...
Resource Type:: Masters Thesis
Full Text:: Landscape History and Land Use Changes in Kelley Creek, Portland, Oregon. Abstract approved

ScholarsArchive@OSU

Pulse reader for ionization chambers

Dechlorination of p-chlorophenol on palladium based metal support catalyst

Oxygen mass transfer and shear sensitivity studies during cultivation of Nicotiana tabacum var. Wisconsin 38 in a stirred-tank bioreactor

The design, construction and calibration of a low-energy, low exposure-rate ionization chamber

The design and construction of an ionization chamber to measure background radiation

Scattered radiation from bedside radiographic examinations

A study of the thermal characteristics of x-ray tube housings

The distribution of leakage radiation from an unshielded diagnostic-type x-ray tube housing

Evaluation of high-altitude color infrared photography for forest inventory

Stream channel stability and sensitivity to landscape history and land use changes in Kelley Creek, Portland, Oregon

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