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Filtering by: Creator Barnett, Arthur Rex Remove constraint Creator: Barnett, Arthur Rex Degree Field General Science Remove constraint Degree Field: General Science Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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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
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
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

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like to thank my brother Arthur Hellman, not only for his moral and critical support, but also for
Bridging the gap : the problem of vertebrate ancestry, 1859-1875

Creator:

Beeson, Roberta Jane

Abstract:

Determination of the Vertebrate pedigree was a particularly enigmatic problem for evolutionary morphologists of the early post-Darwinian period. At that time, practically no characteristics were known by which the Vertebrates could be linked to any of the other animal groups. Up to the 1850's, most research in embryology and anatomy...

Resource Type:

Dissertation

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Academic Affiliation

General Science4

Advisor

Farber, Paul Lawrence1
Morris, Robert J.1
Spencer, J. Brookes1
Wang, Chih H.1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1963 to 1982

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Creator

Beeson, Roberta Jane1
Chorzempa, Mary Andre, Sister1
Hellman, Walter Daniel1
Willis, David L.1

Date

Date range begin – Date range end

Current results range from 1963 to 1981

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Decade

1980-19891
1970-19792
1960-19691

Degree Field

General Science[remove]4

Degree Level

Doctoral4

Degree Name

Doctor of Philosophy (Ph.D.)[remove]4

File Format

application/pdf1

Language

English [eng]4

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No4

Resource Type

Dissertation4

Rights Statement

Copyright Not Evaluated3
In Copyright1

Subject

Cybernetics -- Research1
Radiation -- Dosage1
Radioactive tracers1
Radiobiology1
Vertebrates -- Evolution1
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