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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:: effort to measure the effect of UV-B radiation on the colonization of new substrates by benthic diatoms

Primary productivity in the southeast Pacific Ocean : effects of enhanced ultraviolet-B radiation

Creator:: Behrenfeld, Mike J.
Abstract:: Anthropogenic releases of trace gases into the atmosphere are causing a decrease in stratospheric ozone concentrations and a subsequent increase in solar ultraviolet-B (UV-B)(280-320 nm) radiation reaching the earth's surface. The objective of this study was to determine the acute effects of enhanced UV-B radiation on the primary production of...
Resource Type:: Masters Thesis
Full Text:: photosynthetically active (PAR) (400 - 750 nm) radiation, decrease the effect of UV-B radiation on photosynthesis

Physiological responses of the marine phytoplankton Dunaliella tertiolecta to UV-B enhanced solar radiation

Creator:: Scott, James Douglas
Resource Type:: Masters Thesis
Full Text:: on biological effects of increased solar ultraviolet radiation. In: Causes and effects of

Dose to the female breast from nuclear medicine and diagnostic radiology

Creator:: Patel, Aarti
Abstract:: There has been increased concern about radiation dose to the female breasts, with approximately 200,000 new breast cancers being diagnosed each year in the United States. The unprecedented increase in the use of radiologic exams on younger women has also raised some additional concerns about how procedures are performed. The...
Resource Type:: Masters Thesis
Full Text:: Patel for the degree of Master of Science in Radiation Health Physics presented on July 18,2008

Elevational differences in UV-B response by the long-toed salamander (Ambystoma macrodactylum)

Creator:: Thurman, Lindsey L.
Abstract:: Global amphibian declines have been attributed to numerous and often synergistic causes, such as invasive species, pathogens, and ultraviolet-B (UV-B) radiation. The effects of these stressors are context dependent and can vary with location, species, and populations. As sensitivity to UV-B has shown inconsistencies across amphibian taxa, it can be...
Resource Type:: Masters Thesis
Full Text:: synergistic causes, such as invasive species, pathogens, and ultraviolet-B (UV-B) radiation. The effects of

The site of action of radio-lethal compounds on Micrococcus radiodurans

Creator:: Manes, Jasper Damon, Jr.
Abstract:: Iodoacetic acid and diphenylamine were used in this study to elucidate the mechanisms of resistance of Micrococcus radiodurans to radiation. This organism, a gram positive, non-spore forming, salmon-pink, tetracoccus has a LD₅₀ of 213,000 R when grown in the absence of radio-modifying agents. M. radiodurans, when grown in media containing...
Resource Type:: Masters Thesis
Full Text:: 2 Effect of Ultraviolet Light and X -rays on Micro- organisms 3 Modification of Radiation

A comparison of radiation induced lipid changes in Micrococcus radiodurans, Sarcina lutea, and Pseudomonas aeruginosa

Creator:: Ley, Ronald Douglas
Abstract:: Quantity variations in pigments and lipid classes were determined following γ-irradiation of Micrococcus radiodurans, Sarcina lutea, and Pseudomonas aeruginosa. Pigmentation was determined by extraction with organic solvents and measured as optical density at 475 mμ for M. radiodurans and S. lutea, and 410 mμ for Ps. E aetuginosa. Pigments of...
Resource Type:: Masters Thesis
Full Text:: effect of y- radiation on lipid classes of M. radiodurans, S. lutea, and Ps. aeruginosa. Quantitative

Reduction of microbial population of seafood by radiation pasteurization

Creator:: East, Dorothy May
Resource Type:: Masters Thesis
Full Text:: provide information on the usefulness of pasteurization radiation for fishery products. In this regard

Design techniques for radiation hardened-phase locked loops

Creator:: Nemmani, Anantha Nag
Abstract:: Spacecrafts experience radiation in the course of their operation and all electronic equipment on board these spacecrafts has to be designed to withstand the effects of this radiation. This thesis describes the effects of total ionization dose (TID) and single event transients (SET) in phase-locked loops - an important circuit...
Resource Type:: Masters Thesis
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 EFFECTS OF RADIATION ON PHASE-LOCKED LOOPS . . . . . . . . . . . . 3 2.1 Effect of total

The irradiation resistance of food pathogens contaminating seafoods

Creator:: Dutiyabodhi, Pisawat
Abstract:: Studies have been made to determine the limits of tolerance to gamma radiation for 15 cultures of the following bacterial species both in culture media and in irradiation-sterilized seafoods (crab-meat, halibut and shrimp) inoculated with Salmonella (seven species), Shigella (three species), and one species each of Neisseria, Myco-bacterium, Esctrerichia, Proteus...
Resource Type:: Masters Thesis
Full Text:: Radiation on Amino Acids Effect of Ionizing Radiation on Lipids Effect of Ionizing Radiation on Enzyrnes

ScholarsArchive@OSU

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

Primary productivity in the southeast Pacific Ocean : effects of enhanced ultraviolet-B radiation

Physiological responses of the marine phytoplankton Dunaliella tertiolecta to UV-B enhanced solar radiation

Dose to the female breast from nuclear medicine and diagnostic radiology

Elevational differences in UV-B response by the long-toed salamander (Ambystoma macrodactylum)

The site of action of radio-lethal compounds on Micrococcus radiodurans

A comparison of radiation induced lipid changes in Micrococcus radiodurans, Sarcina lutea, and Pseudomonas aeruginosa

Reduction of microbial population of seafood by radiation pasteurization

Design techniques for radiation hardened-phase locked loops

The irradiation resistance of food pathogens contaminating seafoods

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