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 20 of 45 for “"reduced oxygen"”.
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Lignin biodegradation: reduced oxygen species
… the macromolecule. The possible involvement of reduced oxygen species produced by white-rot fungi in the initial breakdown of the lignin macromolecule, during its biodegradation, was investigated. Using Coriolus versicolor as a representative of white-rot fungi, I demonstrated that C. versicolor …
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Experimental observations on some reduced-oxygen Chevrel-phase compounds
… have developed a refined procedure for removing oxygen from the Chevrel phase compounds SnMo6Sg, PbMo6Sg, and Cu1.gMo6Sg. Measurements of the temperature dependence of the magnetic susceptibility have been made on these gettered Chevrel compounds, and comparisons have been made between the Pauli …
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Clostridium botulinum toxin development in refrigerated reduced oxygen packaged Atlantic croaker (Micropogonias undulatus)
… the effects of storage temperature and film oxygen transmission rate (OTR) on toxin development by Clostridium botulinum in refrigerated raw vacuum packaged croaker fillets, and to determine if toxin development precedes microbiological and/or organoleptic spoilage. Raw croaker fillets were …
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Antioxidents or reduced oxygen tension as a defense system in T cells ex vivo and in vitro
… ebselen, NAcetyl L- Cysteine (NAC) or mitoQ or reduced oxygen (O2) tension on markers of T cell function and integrity using CD4+ T cell clones and ex vivo polyclonal human peripheral blood derived mononuclear cells or CD4+ T cells derived from healthy young and older aged donors. The results of …
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experimental investigation of a reacting transverse jet in a high pressure oscillating vitiated crossflow
… resulting in lower thermal NOx, and the reduced oxygen and high temperature vitiated primary zone flow further help to reduce pollutant emissions and quickly complete combustion.
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The effect of elevated temperatures on the wear of medium-chromium steel in carbon dioxide
… run in both atmospheres so that the effect of reduced oxygen partial pressures could be studied...
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Heterogeneous Photooxidation of Trichloroethene on Titanium Oxides Encapsulated in Zeolites L and Y
… Additional analysis using water vapor and reduced oxygen pressure was conducted and the products and intermediates observed. From these analyses a TCE decomposition rate comparison of all samples was prepared and discussed. It was found that TiOx/Y has the faster rate of TCE decomposition …
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Micro-fading spectrometry: an ivestigation into display of traditional watercolour pigment in anoxia
… the first time in 0%, 2%, 3.5%, 5%, 10% or 21% oxygen concentrations. Results from this investigation indicated that the previously reported deleterious effects of reduced oxygen concentrations (hypoxia) for Prussian blue may only become relevant at oxygen lower levels (beginning at an hypoxic …
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Su onkologinėmis ligomis siejamas pre-iRNR splaisingas: splaisingo veiksnių ir hipoksinės mikroaplinkos tyrimas /
… used tumor cell lines. Our results indicate that reduced oxygen content in the cell environment (hypoxia) affects Fas pre-mRNA alternative splicing. The results obtained in this work provide valuable information about the processes initiating diseases in various systems.
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Full-scale trials of external nitrification on plastic media nitrifying trickling filter
… removal and nitrification, such as significantly reduced oxygen demand (~50%) and biological N and P removal on the full wastewater flow. To date full-scale studies in South Africa have been performed only with rock media trickling filters, for example that at Daspoort WWTP (Muller et al., 2004, …
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Water quality requirements for first-feeding in marine fish larvae of the Cape of Good Hope, with description of developmental stages
… un-ionized ammonia, elevated pH, and reduced oxygen concentration are considered to be potential hazards in the rearing tank. NO₂⁻, NO₃⁻, H⁺, and free CO₂ are nontoxic at levels likely to be encountered in practical fish culture. There are only minor inter-specific differences in …
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Identification, mechanisms and treatment of perinatal brain injury
… the cerebral mitochondrial response to in-utero oxygen deprivation is unclear. Compared with preterm fetal sheep, I demonstrated that near-term fetal sheep initially showed a more rapid increase of oxidised cytochrome oxidase during UCO followed by delayed loss, suggesting loss of mitochondrial …
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The doping and magnetic field dependence of the heat capacity of yttrium barium copper oxide superconductors
… of measurements made on the doping effects in reduced oxygen content YBa2Cu3O7-x. The two most remarkable findings are: 1) there is a rapid decrease of the amplitude of the heat capacity anomaly with the reduction of the oxygen content and 2) the magnitude of the fluctuation effects near the …
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Eliminating oxygen supply limitations for transplanted microencapsulated islets in the treatment of type 1 diabetes
… an additional mass transfer resistance for oxygen transport to islets. This reduced oxygen transfer can lead to a hypoxic core within the islet that results in tissue death and reduced function. We have studied two approaches to enhance microencapsulated islet survival and function by …
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Some effects of dimethyl sulfoxide on absorption, translocation, and membrane permeability in plants
… by 3% or higher DMSO. Treatments of DMSO reduced oxygen uptake in corn roots. DMSO failed to increase diffusion of labeled solutes through isolated plant cuticular membranes. In <i>Beta vulgaris</i> L. (beet) permeability studies, DMSO increased efflux of betanin from root cells. Combining …
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Different Methodologies to Characterize and Diagnose Sickle Cell Disease in Both Developed and Developing Nations
… the protein hemoglobin. This disease causes reduced oxygen carrying capacity of RBC resulting in painful crisis, hemolytic anemia, and infection susceptibility. SCD affects around 100,000 individuals in USA alone and 14 million people globally. SCD affected individuals have high mortality …
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Role of Hypoxia-inducible Factor in Kidney Cancer
… survival of all organisms. In mammalian cells, reduced oxygen availability, or hypoxia, triggers a myriad of alterations within molecular pathways aimed at ensuring sustained viability and functionality of vital organs. The master regulator of the hypoxic response is the heterodimeric HIF …
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Effects of Hyperoxia on Thermal Tolerance and Indicators of Hypoxic Stress in Antarctic Fishes That Differ in Expression of Oxygen-Binding Proteins
… Channichthyidae) are unique in lacking the oxygen carrier hemoglobin (Hb) in their blood, leaving them with only 10% of the oxygen-carrying capacity observed in closely related red-blooded fishes. Previous studies have shown that icefishes have lower critical thermal maxima …
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Modeling oxygen requirements in ischemic cardiomyocytes
… obstructed and the cardiac muscle is deprived of oxygen. Although removing the blockage and allowing reperfusion can prevent death, at the same time it can cause significant damage through "reperfusion injury." To date, there are limited methods to predict the viability of the myocardial muscle …
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Experimental simulation of crevice corrosion of a functionally graded composite system of F91 and Fe-12Cr-2Si exposed to high-temperature lead-bismuth eutectic coolant
… attack within the crevice due to a drastically reduced oxygen potential and low pH. Furthermore, in a liquid metal environment, the reducing conditions combined with typically high solubilities of alloy components in the liquid metal can result in severe, localized crevice corrosion that …
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