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Filtering by: Creator McKeel, Willis Newton Remove constraint Creator: McKeel, Willis Newton Academic Affiliation General Science Remove constraint Academic Affiliation: General Science

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  • 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
    Full Text:
    ABSTRACT OF THE THESIS OF David Lee Willis for the Doctor of Philosophy in General Science (Name

  • 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:
    fluxional calculus of Isaac Newton (1642-1716). Babbage and his friends were actually carrying out a

  • Lamarck's approach to an understanding of man

    Creator:
    Dobson, Christopher Michael
    Abstract:
    Jean Baptiste Lamarck (1744-1829) is considered here in the context of the Enlightenment effort to develop a science of man. His Philosophie zoologique (1809) and the Systeme analytique (1820) are the two principal relevant works examined in depth to discover how he meant to base a science of man on...
    Resource Type:
    Masters Thesis
    Full Text:
    not yet seen their Newton. Furthermore, man was nature's crowning production, and thus a highlight

  • John Turberville Needham (1713-1781) and eighteenth century theories of generation

    Creator:
    Benson, Keith Rodney
    Abstract:
    There were two viable theories of generation, preformation and epigenesis, existing in the Seventeenth and Eighteenth Centuries. Due to their irreconcilable nature, they were often at loggerheads during this time interval. The status of these generation theories can be effectively understood in terms of Thomas Kuhn's conception of preparadigm science....
    Resource Type:
    Masters Thesis
    Full Text:
    , trans. with intro. by Robert Willis (London, IB-47), p.336. 15 present before conception. In De

  • In vivo counting of americium-241 in human lungs and tracheobronchial lymph nodes

    Creator:
    Northcutt, Allison Ruth
    Abstract:
    To distinguish americium-241 in human lungs from translocated activity in the tracheobronchial lymph nodes (TBLN), two intrinsic germanium detectors were collimated with 0.3-cm lead sheeting. A tissue- equivalent phantom containing either 620 nCi (22.9 kBq) in the lungs or a 2200 nCi (81.4 kBq) TBLN point source was counted; as...
    Resource Type:
    Masters Thesis
    Full Text:
    has made the Oregon sojourn a cherished event. To Dr. David Willis, I thank him forgranting me a

  • Experimental taxonomy, 1930-1950 : the impact of cytology, ecology, and genetics on ideas of biological classification

    Creator:
    Hagen, Joel Bartholemew
    Abstract:
    During the years between 1930 and 1950 a number of attempts were made to introduce techniques and ideas from cytology, ecology, and genetics into the field of taxonomy. Advocates of this "experimental taxonomy" believed that cytological, ecological, and genetic techniques would provide a rigorous, objective methodology to replace the traditional...
    Resource Type:
    Dissertation
    Full Text:
    to find its Isaac Newton. 18 Conversely, Wheeler, though admitting that "a few super-Einsteins

  • 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:
    , and Professor Goode for their fine spirit of cooperation. Sincere gratitude is accorded Dr. Willis

  • 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

  • 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
    Full Text:
    would like to thank Dr. David Willis and the General Science Department for unfailing support and

  • 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
    Full Text:
    . David Willis has been most generous in terms of material support and encouragement. For intellectual