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Studies on Microorganisms in Jet Aircraft Fuel Systems

Description: Laboratory and field investigations during the past ten years have demonstrated that certain microorganisms can cause deleterious effects in jet fuel tank systems. These investigations have brought about new concepts concerning the mechanisms of utilization of certain constituents in jet fuel tanks by microorganisms. Since the presence of microorganisms is inevitable in fuel systems, research efforts have been directed towards identification and determination of the types of microorganisms wh… more
Date: May 1970
Creator: Crum, Morris Glenn
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Microorganisms Associated with a Spray Irrigation System

Description: The area of research for this thesis concerns the role played by microorganisms in the process of organic breakdown of waste effluent. Although considerable research has been done since the early 1950's, little consideration has been given to the role of the microorganisms in this type of waste water purification.
Date: August 1969
Creator: Nichols, Susan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Polypeptide and Polysaccharide Processing in Hyperthermophilic Microorganisms

Description: This project focused on the microbial physiology and biochemistry of heterotrophic hyperthermophiles with respect to mechanisms by which these organisms process polypeptides and polysaccharides under normal and stressed conditions. Emphasis is on two model organisms, for which completed genome sequences are available: Pyrococcus furiosus (growth Topt of 98°C), an archaeon, and Thermotoga maritima (growth Topt of 80°C), a bacterium. Both organisms are obligately anaerobic heterotrophs that reduc… more
Date: December 22, 2008
Creator: Kelly, Robert M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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New developments in biotechnology: Requirements for deposit of microorganisms, plants, and animals and the role of the independent depository

Description: This report starts out with historical development of independent depositories. It then discusses general requirements for deposits of microorganisms, plants and animals as they relate to the application for a patent and the role of independent depository in facilitating provisions of patent law governing specifications of the a patent applications.
Date: December 1987
Creator: Bobbie A. Brandon
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Extracts of Garden Vegetables as Sources of Nutrition for Various Microorganisms

Description: This study was undertaken in order to determine whether the extracts of common garden vegetables could be incorporated into simple, economical culture media which might be used for the growth and cultivation of at least some of the more commonly used microorganisms.
Date: January 1954
Creator: DuBois, Kenneth Guinn
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Basic aspects of radiation action on microorganisms. Final report for the period ending October 31, 1977. [Radioresistance of micrococcus luteus]

Description: Progress is reported on studies on the basic aspects of radiation effects on microorganisms. Results are included from studies on the effects of uv pretreatment on the survival of ..gamma..-irradiated micrococcus luteus and uv-induced radioresistance to bacteriophage.
Date: December 1, 1977
Creator: Pollard, E.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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New microorganisms and processes for MEOR. Quarterly report ending September 30, 1992

Description: Oil reservoirs naturally contain inorganic and organic materials which can be exploited through simple supplementation to support the growth of microorganisms which aid in the release of oil from the rock matrix. Other compounds which may serve as nutritional sources for microorganisms are added to reservoirs during production and operation of oil fields. These materials include sulfate, nitrate, carbonate, volatile fatty acids, nitrogen-containing corrosion inhibitors, phosphorous-containing s… more
Date: December 31, 1992
Creator: Sperl, G. T. & Sperl, P. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lethal and mutagenic effects in microorganisms grown in $sup 3$H$sub 2$O. Final report

Description: Results are summarized from studies of lethal and mutagenic effects in microorganisms grown in tritiated water. It was concluded that the effects of radiation alone are sufficient to explain the biological effects observed. Studies on the effect of tritium decays accumulated during growth of organisms in the presence of tritiated nucleic acid precursors showed that the mutation rates per decay for continuous growth and for storage conditions were identical and that tritium-labeled adenine and c… more
Date: January 1, 1974
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Final Report DE-FG02-97ER62475

Description: This project began with the simple goal of trying to understand the diversity of dissimilatory metal-reducing microorganisms that might be found in subsurface environments. It ended with a sophisticated understanding not only of what microorganisms are important for metal reduction in uranium-contaminated subsurface environments, but also their physiological status during in situ uranium bioremediation. These findings have provided unprecedented insight into uranium bioremediation and the metho… more
Date: March 12, 2008
Creator: Lovley, Derek, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Effects of Indoleacetic Acid and Kinetin on the Growth of Some Microorganisms

Description: Data are presented from a study of the effects of indoleacetic acid and kinetin on the growth of Amoeba proteus, Escherichia coli, and two species of yeast. Data are tabulated and reaction mechanisms are discussed. 95 references. (C.H.)
Date: March 31, 1959
Creator: Kennell, D.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Microbial Transformations of Radionuclides Released From Nuclear Fuel Reprocessing Plants.

Description: Microorganisms can affect the stability and mobility of the actinides U, Pu, Cm, Am, Np, and the fission products Tc, I, Cs, Sr, released from nuclear fuel reprocessing plants. Under appropriate conditions, microorganisms can alter the chemical speciation, solubility and sorption properties and thus could increase or decrease the concentrations of radionuclides in solution and the bioavailability. Dissolution or immobilization of radionuclides is brought about by direct enzymatic action or indi… more
Date: October 18, 2006
Creator: Francis, A. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Carbon Dioxide Fixation by Microorganisms

Description: Resting cells of eleven microorganisms were exposed to radioactive carbon dioxide for 40 minutes. The radioactive compounds formed during this time were separated and identified by paper chromatography. Resting cells of Lactobacillus casei fixed no carbon dioxide and growing cells fixed carbon dioxide primarily in malic and aspartic acids. All of the radioactive compounds formed could have become radioactive by reversal of known decarboxylation reactions.
Date: July 24, 1951
Creator: Lynch, Victoria H. & Calvin, Melvin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of terrestrial microcosms for assessing the fate and effects of genetically engineered microorganisms on ecological processes

Description: This project evaluates and modifies the existing US Environmental Protection Agency's Office of Pesticides and Toxic Substances (EPA/OPTS) terrestrial microcosm test system and test protocols such that they can be used to determine the environmental fate and ecological hazards of genetically engineered microorganisms (GEMs). The intact soil-core microcosm represents terrestrial ecosystems, and when coupled with appropriate test protocols, such microcosms may be appropriate to define and li… more
Date: April 1, 1989
Creator: Fredrickson, J. K.; Bentjen, S. A.; Bolton Jr., H.; Li, S. W.; Ligotke, M. W.; McFadden, K. M. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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New microorganisms and processes for MEOR. Final report

Description: Oil reservoirs naturally contain inorganic and organic materials which may be exploited through simple mineral supplementation to support the growth of denitrifying microorganisms. The growth and metabolic products from the presence of these microorganisms will aid in the release of oil from the rock matrix and improve crude oil quality and oil field operations. These studies have been successful in defining new microorganisms and processes for MEOR. The data show that development of a mixed de… more
Date: December 1, 1993
Creator: Sperl, P. L. & Sperl, G. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of selected thermophilic microorganisms on crude oils at elevated temperatures and pressures

Description: The objective of this program is to determine the chemical and physical effects of thermophilic and thermoadapted organisms on crude oils and cores at elevated temperatures and pressures. Ultimately a data base will be generated which will be used in technical and economic feasibility studies leading to field applications. Progress to date are described for: construction of core-flooding systems; studies of trends in biochemical interactions between different microorganisms and crude oils; and … more
Date: January 1, 1992
Creator: Premuzic, E.T. & Lin, M.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Report for DOE grant no. DE-FG02-04ER63883: Can soil genomics predict the impact of precipitation on nitrous oxide flux from soil

Description: Nitrous oxide is a potent greenhouse gas that is released by microorganisms in soil. However, the production of nitrous oxide in soil is highly variable and difficult to predict. Future climate change may have large impacts on nitrous oxide release through alteration of precipitation patterns. We analyzed DNA extracted from soil in order to uncover relationships between microbial processes, abundance of particular DNA sequences and net nitrous oxide fluxes from soil. Denitrification, a microbia… more
Date: December 15, 2008
Creator: Schwartz, Egbert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Microsphere fluoroimmunoassay for microorganisms: An update

Description: Microspheres are used as labels in a fluorescence immunoassay for individual microorganisms. The diameter of a sphere that has reacted with microorganisms is determined from measurements of the optical resonance frequencies. The spheres have been coated with antibodies so that each microsphere diameter corresponds to a different species of microorganism. Further experiments on specificity and on optical resonance measurements are presented.
Date: December 31, 1994
Creator: Whitten, W. B.; Ramsey, J. M. & Bronk, B. V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Growth response of microorganisms to different molecular fractions of lignite

Description: Our research is primarily concerned with isolating and characterizing microbes which are able to dissimilate coal and convert it to other useful chemicals. This quarter, general growth responses of microorganisms cultivated in the presence of different molecular weight fractions of lignite coal were examined. Aerobic and anaerobic environmental samples from a variety of ecological niches were used as inocula. Growth of the microorganisms in these samples on the following types of media was test… more
Date: January 1, 1990
Creator: Polman, J. K.; Breckenridge, C. R.; Dugan, P. R. & Quigley, D. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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