Index Catalog // ScholarsArchive@OSU

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

A study of relative speeds of medical x-ray film and intensifying screen combinations

Creator:: Gross, Richard Eugene
Abstract:: The objective of this study was to determine the relative speeds of available medical x-ray films exposed directly to x-rays and exposed in combination with various types of intensifying screens. The information obtained from this sensitometric data was used to obtain factors by which a radiographic exposure technique with one...
Resource Type:: Masters Thesis
Full Text:: diagnosis aided by an x-ray plate. In Vienna, Eduard Haschek, a physicist, and Otto Theodor Lindenthal, a

Norbert Wiener and the growth of negative feedback in scientific explanation : with a proposed research program of "cybernetic analysis"

Creator:: Hellman, Walter Daniel
Abstract:: Negative feedback has become ubiquitous in science both as a technique and as a conceptual tool. As a technique, negative feedback has a long history; devices based in its use were made in antiquity. It has only been during the last century, however, that rigorous quantitiative methods have become associated...
Resource Type:: Dissertation
Full Text:: textbooks specifically devoted to feedback control; see, for example, Otto J. J. Smith, Feedback Control

A critical analysis of wildlife conservation in Oregon

Creator:: Rymon, Larry Maring
Abstract:: This analysis is the study of Oregon's wildlife resources from the period prior to white settlement up to the present time, including critical projections, based on present trends and expected conditions for both human and wildlife populations in the state up to the year 2010. Prior to white settlement Oregon...
Resource Type:: Dissertation

Ionizing radiation and its chemical effects : a historical study of chemical dosimetry (1902-1962)

Creator:: Chorzempa, Mary André, Sister
Abstract:: Chemical dosimetry developed in response to needs created by developments in the field of high-energy radiation. Shortly after the discovery of X-rays in 1895 and of radioactivity in 1896, the deleterious effects of ionizing radiation were recognized. To guard against the injurious effects of radiation in medical application, dose-measuring methods...
Resource Type:: Dissertation

William Keith Brooks (1848-1908) : a case study in morphology and the development of American biology

Creator:: Benson, Keith Rodney
Abstract:: The major historical studies that have examined American biology have emphasized the development of experimental biology at the end of the nineteenth century. In this characterization, the descriptive branch of biology has often been treated as less than important and, in several cases, as a hindrance in the application of...
Resource Type:: Dissertation

The development of the chlorinity-salinity concept in oceanography

Creator:: Wallace, William J.
Abstract:: This study traces the historical foundations of the concept of constant ionic proportionality and the equation (Salinity [S%₀] = 1.805 Chlorinity [Cl%₀] + 0.030) which has been in general use in oceanography since 1902 until 1969 and which is based upon this constancy, The notion that the constituents present in...
Resource Type:: Dissertation

William Ernest Castle, American geneticist : a case-study in the impact of the Mendelian research program

Creator:: Taylor, H. Terry
Abstract:: In their modern context questions of heredity have come to be closely aligned with theories of evolution because all such theories require the presence of heritable variation. Thus the need for an understanding of a source of variation and a mechanism for its inheritance became very apparent with the general...
Resource Type:: Masters Thesis

Radiotracer methodology in biological science

Creator:: Willis, David L.
Abstract:: The use of radioactive isotopes as tracers in biological systems has become widespread since the close of World War II. Proper use of radiotracers requires a fundamental understanding of the physical nature of radioactivity, the characteristics of ionizing radiation, and the various methods available for measuring radioactivity. More importantly, the...
Resource Type:: Dissertation

ScholarsArchive@OSU

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

A study of relative speeds of medical x-ray film and intensifying screen combinations

Norbert Wiener and the growth of negative feedback in scientific explanation : with a proposed research program of "cybernetic analysis"

A critical analysis of wildlife conservation in Oregon

Ionizing radiation and its chemical effects : a historical study of chemical dosimetry (1902-1962)

William Keith Brooks (1848-1908) : a case study in morphology and the development of American biology

The development of the chlorinity-salinity concept in oceanography

William Ernest Castle, American geneticist : a case-study in the impact of the Mendelian research program

Radiotracer methodology in biological science

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