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 123 for “"iron (Fe)"”.
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Modification of aspirin derivatives by coordination to iron and manganese
… were studied were those of manganese (Mn) and iron (Fe).
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DEVELOPMENT OF MAGNETIC FABRICS WITH TUNABLE HYDROPHOBICITY
Polystyrene (PS) fiber mats incorporating iron (Fe) particles were fabricated by electrospinning and the hydrophobicity of the resulting magnetic fabrics was investigated with and without an applied magnetic field. The results show that the hydrophobicity (as measured using water droplet contact …
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Moessbauer Studies of Photosynthetic Reaction Centers From Rhodopseudomonas Sphaeroides R-26
Zero field Mossbauer measurements on ('57)Fe-enriched reaction centers (RCs) differing in ubiquinone content, detergent, oxidation state, or the presence of o-phenanthroline all show a single quadrupole doublet of similar splitting (DELTA)E(,Q), center shift (delta), and temperature dependence. The …
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Response of Soybean Iron and Manganese Deficiency
Iron (Fe) and manganese (Mn) deficiency are recurring problems in soybeans (Glycine max (L.) Merr.) grown on high pH, calcareous soils. Although chemical fertilizers have been used to control yield losses associated with these deficiencies, genetic resistance is more reliable and effective. …
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R-matrix calculations in support of diagnostics for fusion and astrophysical plasmas
… (Mo I), neutral tungsten (W I), singly ionised iron (Fe II), and neutral iron (Fe I). While atomic data for the neutral stages of molybdenum and tungsten finds an important application when investigating the influx of impurities into magnetically confined fusion plasmas, atomic data for the low …
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Effect of Carbonaceous Nanoparticles on Naturally Occurring Iron Reduction by Carboxylates
… by many institutions due to the detrimental effects on health, environment and climate; yet many underlying mechanisms of PM reactivity are still not well understood. In the current study, the effect of carbonaceous nanoparticles (CNPs), contained within ultrafine PM (particle diameter ≤ 100 …
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Inhibitory Effects of Ketoconazole on the Oxidation of Linoleic Acid Micelles, Phospholipid Liposomes, and Human Low Density Lipoprotein (h-LDL)
Soybean lipoxygenase (SLO) (500-5000 units/ml), Fe(III)Cl3/ascorbate (5-100microM) and hematin (5-100microM) induced oxidative modification of lipids present in micelles of linoleic acid (0.5 mM), liposomes prepared from phospholipid extracts of bovine brain (2.5 mg/ml), and h-LDL (0.5 mg/ml). …
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Soil and plant factors associated with iron chlorosis of Kentucky bluegrass
Iron (Fe) chlorosis is a common problem on turfgrasses grown under alkaline soil conditions. The objective of this study was to determine the iron uptake efficiency of different varieties of Kentucky bluegrass. In this study, 25 varieties and 5 blends of Kentucky bluegrass (Poa pratensis L.) were …
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Magneto-elastic behavior in hard- and soft-MRE's including demagnetizing effects
… of either nominally 40-micron M-type barium hexaferrite (BaM) or 325-mesh iron (Fe) particles cured with or without the presence of a magnetic field. Magnetization and density measurements were employed to help confirm fabrication of the four distinct classes. Results of magnetization …
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The relationship between iron and nitrogen fixation in Trichodesmium spp.
… oceans, regimes frequently characterized by low iron (Fe). Limited information exists about what levels of Fe limit Trichodesmium N fixation. I developed a diagnostic for Fe limitation using quantitative reverse transcription PCR (qRT-PCR) of the Fe stress response gene isiB, which encodes for …
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The relationship between iron and nitrogen fixation in Trichodesmium spp.
… oceans, regimes frequently characterized by low iron (Fe). Limited information exists about what levels of Fe limit Trichodesmium N fixation. I developed a diagnostic for Fe limitation using quantitative reverse transcription PCR (qRT-PCR) of the Fe stress response gene isiB, which encodes for …
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Rapid Phytate Quantification in Manures and Runoff Sediments using HPIC
… is vital to understanding P dynamics in the environment. Phytate is an organic form of P, with 6 phosphate groups, which is found in manures, but is difficult to quantify due to its affinity for complex formation with aluminum (Al) and iron (Fe). The objective of the first study was to measure …
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Iron Reduction in Soot
Ferrous iron (Fe(II)) has been implicated as one contributor in the generation of reactive oxygen species (ROS) from ambient particles emitted during the incomplete combustion of fossil and biomass fuels. Although ROS are known to induce unhealthy oxidative stress in cellular systems, the …
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Preparation of glass-ceramics largely using steelmaking slags and study on the effect of iron content on properties of glass-ceramics
… using steelmaking industry waste containing high iron content based on powder sintering and crystallization method. Anthracite was used in varying amounts as the reducing agent to recover iron in raw materials. X-ray diffraction analysis (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and …
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Selected Aspects of Mineral Nutriture of the Cat and Dog With Special Emphasis on Magnesium and Iron
… requirements of dogs and cats and factors affecting these requirements. Thus, the dietary magnesium (Mg) requirement of the growing kitten was estimated. Signs of Mg deficiency (depressed serum and bone Mg, soft tissue calcification) were prevented by supplementing a casein-dextrose diet to …
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Iron deficiency affects spatial learning in neonatal piglets
Iron deficiency is the most commonly reported nutritional deficiency in the world and has been linked to cognitive impairments in children. Our aim was to assess the impact of iron deficiency on cognition using neonatal piglets as a model for human infants, as neurodevelopment in piglets resembles …
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Decoupling of iron and phosphate in the global ocean
Iron (Fe) is an essential micronutrient for marine phytoplankton often limiting phytoplankton growth due to its low concentration in the ocean and thus playing a role in modulating the ocean's biological pump. In order to understand controls on global Fe distribution, the decoupling between Fe and …
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Development of New and Alternative Resources for Breeding Low Phytate Soybeans
… as well as in the preservation of the environment. However, due to association with reduced seed germination and field emergence potential, low phytate (LP) soybean cultivars are not being advanced to commercialization. Soybean breeders of LP lines must adjust their techniques and …
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Effect of aluminum oxyhydroxide coatings on the performance of limestone drains
… treatment for acid mine drainage (AMD). The effectiveness of using limestone to treat AMD can be reduced by aluminum (Al) and iron (Fe) oxyhydroxide coatings that form on the limestone, because the coatings inhibit the transport, and thus neutralization, of hydrogen ions (H+) derived from acid …
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Chemically Induced Phytoextraction of Lead (Pb) Contaminated Soil by Switchgrass (Panicum virgatum L.), assisted with BAP and NTA applications
… Plants were grown in a controlled greenhouse environment in 5L pots with Pb-contaminated soil (5802.5 mg kg-1) collected from a former Superfund site in Cedartown, GA. Following harvest, plant material was dried, acid digested and chemically analyzed for lead (Pb), aluminum (Al) and iron (Fe) …
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