Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Extracellular Products"”.
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Trihalomethane-forming potential of algal extracellular products and biomass
… Pure solutions of representative algal extracellular metabolites were analyzed in a similar manner. The highest-yielding (chloroform-carbon per total organic carbon) compounds were released during the late exponential growth phase. More organic carbon was accumulated in the external …
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Trihalomethane formation potential of algal extracellular products and biomass
… was directed toward determining the patterns of extracellular products excretion into the medium and of the chloroform produced after chlorination. Similar studies of cell suspensions were conducted. The study also included an analysis of the chloroform yields from chlorinated reservoir sediments …
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Novel extracellular products of Mycobacterium tuberculosis: composition, synthesis, and relevance to disease
… death, has not been performed. Surprisingly, extracellular Mtb RNA fragments were identified as a potent inducer of host cell apoptosis. This extracellular RNA was identified as predominantly rRNA and tRNA fragments that accumulated early during in vitro culture of Mtb. Mechanistic studies …
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Trihalomethane-precursor production by Hydrilla verticillata in the Occoquan Reservoir
… to result from hydrilla. These included: 1) extracellular products (ECP) from hydrilla itself; 2) ECP from periphyton that colonized the hydrilla; and 3) decay products from hydrilla. This study projected aa potential increase in THMFP of 23 ug/L should hydrilla become established in the …
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A generic approach to environmental assessment of microbial bioprocesses through life cycle assessment (LCA)
… of renewable resources to commodity and energy products. The overall objective of the thesis is to obtain the data required to perform these LCA analyses. To achieve the overall objective, the thesis presents a methodology to obtain the material and energy balance data estimates required for the …
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Algal and bacterial interactions in producing precursors of trihalomethanes and other halogenated organics
… halogen (TOX) formation potentials of algal extracellular products (ECP), and (2) whether or not diurnal cycling of THM and TOX precursors occurs in vitro. These objectives were addressed through culture studies of heterotrophic microorganisms and pure algae from both the green and blue-green …
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The Effect of Environment on Virulence Factors and Resistance of Mucoid Strains of Pseudomonas Aeruginosa
… resulted in enhanced production of the extracellular products, while magnesium limited cells produced the least amounts. M7 showed lower amounts of extracellular enzymes in culture supernatants but higher levels of cell bound enzymes. The sensitivity to polymyxin was markedly affected by …
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An integrated membrane-based chromatographic process for biomolecule isolation and purification
… in a complex medium/broth. For intracellular products, cells are first harvested. Subsequently, cell lysis and homogenization are undertaken to produce a homogenate. The biomolecules are next separated from the cell debris by lysate clarification. For extracellular products, the biomolecules …
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CHARACTERIZATION AND PATHOLOGICAL STUDY OF A. HYDROPHILA IN WALKING CATFISH (CLARIAS GARIEPINUS)
… animals. The results also showed that extracellular products (ECPs) of the bacteria might play an important role in causing the disease that led to the death of fingerlings and adult catfish. The injection of the unwashed and sonicated bacteria caused the total counts of the …
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Hyaluronate Lyase Gene of <i>Streptococcus pyogenes</i>: Molecular Characterization and Regulation
… bacterium has the ability to elaborate several extracellular products capable of causing tissue damage; one of which is a hyaluronate lyase. Little information is available regarding the regulation of streptococcal hyaluronidase. As such, the expression of <em>hyl</em>A in the hyaluronate …
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The relationship between cupric ion activity and the toxicity of copper to phytoplankton
… was found for the complexation of copper by extracellular products of the alga T. pseudonana (clone 3H). Cupric ion selective electrode measurements of copper complexation in unused low salinity culture media and in identical media in which algae had been grown and from which they were …