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Filtering by: Creator McGregor, George Harvey Remove constraint Creator: McGregor, George Harvey Degree Field General Science Remove constraint Degree Field: General Science

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  • The biological significance of low molecular weight RNA associated with tumor virus

    Creator:
    Carnegie, John William
    Abstract:
    RNA isolated from BAI strain A (Myeloblastosis) Avian Tumor Virus can be fractionated into two fractions on a sucrose density gradient, one of higher molecular weight and one of low molecular weight. The low molecular weight (LMW) virus RNA was found to chromatograph the same as E. coli tRNA on...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: Dr. George S. Beaudreau RNA isolated from BAI strain A (Myeloblastosis) Avian Tumor Virus

  • A determination and selection of a biology course content of significance for a freshman level general education course

    Creator:
    Hankins, Lela Ruth
    Abstract:
    The purposes of this investigation were twofold: 1. To determine important criteria for making a selection of course content in general biology. 2. To ascertain what should be the content emphasis in biology for the purposes of general education at the freshman college level. The literature pertinent to the problem...
    Resource Type:
    Dissertation
    Full Text:
    , The ideas and works of selected biologists -- William Harvey, Gregor Mendel, Lamarck, and Charles

  • Charles Babbage, philosopher, reformer, inventor : a history of his contributions to science

    Creator:
    Bell, Walter Lyle
    Abstract:
    This history concerns the scientific contributions of Charles Babbage (1791-1871) to mathematics, to the invention of calculating machines, and machine tools, to the development of scientific ideas through a wide variety of scientific investigations and his involvement in several different scientific reforms. Babbage considered himself a philosopher in the broadest...
    Resource Type:
    Dissertation
    Full Text:
    ), Edward Ffrench Bromhead (1789-1855), George Peacock (1791-1858), and other students to form the

  • History and analysis of the creation research society

    Creator:
    Elliott, William E.
    Abstract:
    The resurgence of creationism the past few years has been led by advocates of recent-creationism. These individuals, a minority among creationists in general, argue that the entire universe was created approximately 10,000 years ago in one six-day period of time. Recent-creationists support their position by appealing to the Genesis account...
    Resource Type:
    Masters Thesis
    Full Text:
    complete presentation of flood geology that had been published to that time: The New Geology by George M

  • The Development of Astronomy in the United States Prior to 1900

    Creator:
    Harburg, William A.
    Abstract:
    From the earliest English colonization to the present day, there has been interest in astronomy in this country. The purpose of this thesis is to show how the science of astronomy developed in America from the earliest observations by educated colonists using imported instruments and publishing in European journals, to...
    Resource Type:
    Masters Thesis
    Full Text:
    Many of the famous men of the colonial and early federal eras were skilled surveyors, including George

  • Exposure to ultraviolet-B radiation : sensitivity evaluation of an important ecological parameter of the marine copepod Acartia clausi

    Creator:
    Karanas, James J.
    Abstract:
    The ozone present in the atmosphere filters incident solar ultraviolet (UV) radiation such that only the longer wavelengths of the total UV spectrum emitted by the sun reach the earth's surface. Atmospheric increases in nitrogen oxides and chlorofluoromethanes represent a threat to the existence of this protective screen. As the...
    Resource Type:
    Masters Thesis
    Full Text:
    the marine realm were made by Clarke (1946) and Harvey (1950). Productivity seems the most

  • Institutionalizing Science in Oregon : The Role of the Oregon State Academy of Sciences, 1905-1914

    Creator:
    Read, Richard Thomas
    Abstract:
    In February 1905 the Oregon State Academy of Sciences formed in Portland to promote scientific research and diffusion of scientific knowledge in Oregon. The founders also planned to assist in the discovery and development of the state's natural resources. The Academy was the first scientific society in Oregon with professional...
    Resource Type:
    Masters Thesis
    Full Text:
    institutional bases of operation were primarily tied to funding programs and political influence. George H

  • A study of the deterioration of X-ray fluoroscopic screens

    Creator:
    Properzio, William Stuart, 1940-
    Abstract:
    From the time when fluoroscopic screens were first used there have been scattered references to reduction in their light output due to age, use, etc. References are scarce and usually devoid of quantitative data. A long-range program has been set up in an effort to arrive at some meaningful information....
    Resource Type:
    Masters Thesis
    Full Text:
    Fluorescent Screens The first detailed study of fluorescence was made by Sir George Gabriel Stokes (1852a

  • The coloration of animals : a nineteenth century controversy

    Creator:
    Blaisdell, Muriel Louise
    Abstract:
    Mimicry, obscure colors, and secondary sexual colors were important classes of observations that were analyzed by nineteenth century biologists from several vantage points. Adherents of the doctrine of special creation of fixed species believed animal colors to be evidence of design; Darwin and Wallace and their successors suggested that a...
    Resource Type:
    Masters Thesis
    Full Text:
    Darwin. Wallace's autobiography, My life, 3 'Wilma George, Biologist Philosopher. A Study of the Life

  • 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:
    Trout for his assistance and guidance, to John P. Kelley and George M. Corney for their technical