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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
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
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