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 7 of 7 for “"Nickel toxicity"”.
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Aromatic Rich Natural Organic Matter Increases Growth and Reduces Nickel Toxicity in a Wild Daphnia Hybrid
… varying protection NOM provides against metal toxicity –specifically Ni. I show that NOM from different natural sources increases growth rates and decreases time to maturation of Daphnia to various degrees. These changes relate to aromatic content of NOM isolates, the mechanism most likely …
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Effects of nickel toxicity on expression of genes associated with nickel resistance in white spruce (Picea glauca): Nickel translocation in plant tissues.
… objectives of this study were to determine a) nickel accumulation and translocation within tissues and b) nickel effects on gene expression in white spruce (Picea glauca). The results of the study revealed that even at the highest dose of 1,600 mg of Ni /kg of soil, there was no physical …
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The effects of environmental nickel toxicity upon survival, growth, reproduction, fecundity, and lifespan of nematodes Caenorhabditis elegans, Pristionchus pacificus, and Caenorhabditis briggsae
Nickel (II) is a common component of many natural products and man-made devices. Due to its frequent use in everyday life, relatively large amounts of nickel are being released into the environment. Nickel, however, is a known carcinogen; therefore, an assay must be developed in order to understand …
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Investigating proteomic profiles of rainbow trout (oncorhynchus mykiss) kidney and liver tissues exposed to low concentrations of waterborne nickel
Nickel has become a component of natural freshwater that may pose serious ecological risks to aquatic wildlife. Due to Canada’s significant presence in producing and exporting nickel, the country has the opportunity to negatively impact aquatic watersheds and the surrounding environment. We …
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The Influence of Heavy Metals upon Tree Growth in South Wales Forests
… tissue concentrations for cadmium, copper, lead, nickel and zinc ions: these being the lowest concentrations at which shoot yields were affected. Concentrations of these heavy metals in the soil and foliage at the South Wales forestry sites were found to be elevated with respect to a control site …
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Bioavailability and toxicity of nickel to freshwater organisms : a modeling approach
… fact that the bioavailability and hence also the toxicity of many metals is largely influenced by physicochemical parameters such as water hardness, pH and dissolved organic matter. Consequently, a single water quality criterium may be too conservative for certain water bodies whereas it may not …
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Genetic and Biochemical Studies of YqjH and YqjI: Cross-talk between Iron Homeostasis and Nickel Homeostasis in Escherichia Coli
… we focus on the cross-regulation of iron and nickel in bacteria by studying the yqjH-yqjI gene pair in Escherichia coli (E. coli).</p> <p>In E. coli, the yqjH gene encodes a putative ferric siderophore reductase that is also part of the Fur regulon. The yqjI gene, divergently transcribed from …