Index Catalog // ScholarsArchive@OSU

Deep ultraviolet solid-state laser development

Creator:: Dutton, David A. (David Adam)
Abstract:: There is a new possibility of generating deep ultraviolet laser radiation from a solid-state source. With recent advances in material development, a new nonlinear optical crystal provides a greater damage threshold than current materials making higher conversion efficiencies possible. This thesis examines the possibility of using this crystal to generate...
Resource Type:: Masters Thesis
Full Text:: There is a new possibility of generating deep ultraviolet laser radiation from a solid- state source

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:: Exposure to ultraviolet-B radiation : sensitivity

Sublethal effects of UV-B radiation on larval amphibians

Creator:: Belden, Lisa K.
Abstract:: Ultraviolet-B radiation (UV-B) has been suggested as a factor contributing to global amphibian population declines. While ambient UV-B levels damage the eggs and embryos of some amphibian species, few studies have addressed how UV-B affects other life history stages or sublethal responses. My dissertation focuses on (1) investigations of sublethal...
Resource Type:: Dissertation

The effects of ultraviolet irradiation on the photosynthetic apparatus

Creator:: Mantai, Kenneth Edward
Abstract:: The effects of ultraviolet (UV) irradiation on photosynthesis and various partial reactions involving the individual photoreactions of photosynthesis were examined. These reactions included photo-reduction in adapted green algae, Hill reaction, cyclic photophosphorylation, the 520 nm absorbance change and variable-yield fluorescence. The reactions were measured in spinach chloroplasts and isolated chloroplasts...
Resource Type:: Dissertation
Full Text:: The Effects of Ultraviolet Irradiation on the

Some effects of ultraviolet-B radiation (290-320 nm) on unialgal and mixed cultures of two centric diatoms

Creator:: Cavanaugh, William M.
Abstract:: Reduction of stratospheric ozone caused by human perturbation with halocarbon compounds and the consequent increase in mid-wavelength ultraviolet radiation (UV-B radiation. 290-320 nm) reaching the earth's surface could have deleterious ecological effects on marine primary producers. Unialgal and mixed cultures of Thalassiosira pseudonana and Thalassiosira weisflogii were exposed to three...
Resource Type:: Masters Thesis
Full Text:: Some effects of ultraviolet-B radiation (290-320 nm) on

Effects of near-ultraviolet radiation on changes in the biochemical composition of Verticillium albo-atrum

Creator:: Madarash, George Russell
Abstract:: This study sought a better understanding of the mechanism of the near-ultraviolet inhibition of microsclerotia and pigment formation in the fungus Verticillium albo-atrum Reinke & Berth. by observing changes which occur in certain major biochemical components: lipids, chitin, RNA, DNA, protein carbohydrates, and pigment. The most important finding was that...
Resource Type:: Masters Thesis
Full Text:: ) EFFECTS OF NEAR-ULTRAVIOLET RADIATION ON CHANGES IN THE BIOCHEMICAL COMPOSITION OF VERTICILLIUM ALBO

Response to ultraviolet (UV-B) radiation by attached assemblages of estuarine diatoms

Creator:: Brooker, Deborah L.
Abstract:: Global atmospheric pollution from chlorofluorocarbons has the potential of causing significant reductions in the concentrations of stratospheric ozone. If the production of chlorofluorocarbons were to continue into the future at the rate prevalent in 1977, the steady state reduction in total global ozone could be between five percent to ten...
Resource Type:: Masters Thesis
Full Text:: Response to ultraviolet (UV-B) radiation by attached

Some factors affecting the use of sterilamp radiation for sterilizing apple juice

Creator:: Aitken, Herbert Christie
Resource Type:: Masters Thesis

Response of estuarine diatom assemblages to ultraviolet-B radiation (290-320 nm)

Creator:: Brooker, Deborah L., Worrest, Robert C.,, and Oregon State University
Abstract:: Artificial substrates colonized by diatoms from Yaquina Estuary, Oregon, were exposed to solar visible radiation and three levels of ultraviolet radiation (UV-B, 290-320 nm). Flow-through microcosms were constructed inside a glasshouse to serve as chambers for the artificial substrates. The artificial substrates were sampled during three spring/summer experiments. Chlorophyll a...
Resource Type:: Technical Report
Full Text:: ASSEMBLAGES TO ULTRAVIOLET-B RADIATION (290-320 nm) by 0. L. Brooker and R. C. Worrest Oregon State

Assessing and evaluating the Self-indicating Instant Radiation Alert Dosimeter (SIRAD) for gamma and neutron response

Creator:: Stewart, H. Michael
Abstract:: The Self-indicating Instant Radiation Dosimeter (SIRAD) is credit card size, self reading, single use dosimeter produced by JP Laboratories. The SIRAD has a chemical strip that changes color based upon incident radiation. The color change is instantaneous and cumulative. The card was designed for first responders as a way for...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Deep ultraviolet solid-state laser development

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

Sublethal effects of UV-B radiation on larval amphibians

The effects of ultraviolet irradiation on the photosynthetic apparatus

Some effects of ultraviolet-B radiation (290-320 nm) on unialgal and mixed cultures of two centric diatoms

Effects of near-ultraviolet radiation on changes in the biochemical composition of Verticillium albo-atrum

Response to ultraviolet (UV-B) radiation by attached assemblages of estuarine diatoms

Some factors affecting the use of sterilamp radiation for sterilizing apple juice

Response of estuarine diatom assemblages to ultraviolet-B radiation (290-320 nm)

Assessing and evaluating the Self-indicating Instant Radiation Alert Dosimeter (SIRAD) for gamma and neutron response

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