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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 1991 for “"Zinc"”.
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Erythrocyte zinc and dietary zinc in black women
<p>Zinc is essential to the growth and health of humans and may influence many health outcomes. An index of usual zinc intake over a given period is needed. The purpose of this study was to investigate whether or not zinc concentration in erythrocytes is an index of usual dietary intake of zinc …
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Extraction of zinc from scrap steel using zinc-bromine battery technology
… struggles with scrap recycling because of zinc content within scrap needing to be of a suitable level (16 wt%) to be economically viable. Current steel recycling methods (pyrometallurgy and hydrometallurgy) are energy intensive or only pass the problem of recycling onto a separate waste …
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Zinc polysulfides as precursors to zinc sulfide and as group transfer reagents
In the first part of the thesis, reactions of zinc powder with solutions of elemental sulfur in various donor solvents are described. Complexes of the type $\rm ZnS\sb6$(N-donor)$\sb2$ are obtained for the ligands tetramethylethylenediamine (TMEDA), N-methylimidazole (MeIm), and …
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High temperature sulfidation and reduction of zinc titanate and zinc oxide sorbents
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1991.
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Zinc in potato production
Zinc deficiencies have been reported from the states of Washington, Idaho, North Dakota and Texas. The deficiencies are reported to be localized in areas where the parent material of soil is low in zinc content or where the topsoil has been removed by landleveling or lost through erosion. There is …
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Copper and zinc xanthates
Includes bibliographical references.
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Zinc fertilization of lentil in Saskatchewan to increase yield and grain zinc content
Zinc (Zn) fertilization is considered an important agronomic strategy for global food security. Lentil production in Saskatchewan not only provides significant economic benefit for growers, but is marketed in several countries where human Zn deficiencies are common. The impact of Zn fertilization …
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Clinical and pathological manifestations of zinc deficency and zinc toxicity in growing chickens
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Veterinary Pathology, 1959
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A Volumetric Determination of Zinc Involving a Quantitative Precipitation of Zinc Ammonium Phosphate
… of a precise method for the determination of zinc is evident after reading the report of the Sub-Committee on zinc Ore Analyses(3), which shows the wide discrepancies encountered in the determination of zinc by methods in ordinary use. Their report showed results from forty-two chemists …
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Acetate-based Electrolytes for Aqueous Zinc-ion Batteries: An Investigation of the Zinc Anode
<p>Aqueous zinc (Zn) batteries are attractive for grid-scale storage because they combine low cost, intrinsic safety, and high Zn capacity, but their deployment is limited by water’s narrow electrochemical stability window, parasitic gas evolution, and poor Zn utilization in conventional alkaline …
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Evaluation of processing options for the treatment of zinc sulphide concentrates at Skorpion zinc
The zinc oxide resource of Skorpion Zinc, an integrated zinc mine and refinery, near Rosh Pinah in southern Namibia, will be depleted by end of 2015 with a possible extension to 2017. Extensive exploration drilling was unsuccessful. With the abundant availability of zinc sulphide concentrates …
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The chemistry of zinc hydrides.
… structural and chemical properties of complex zinc, magnesium and beryllium hydrides. Least is known about complex zinc hydrides and this thesis records the results of a range of reactions between zinc dihydride and substrates containing acidic protons or unsaturated bonds. Zinc dihydride …
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Electrode reactions in zinc electrolysis
… current efficiency in the electrolysis of pure zinc sulfate solutions (65 gpl Zn⁺⁺ - 200 gpl H₂SO₄) were determined. Pure platinum and platinum coated titanium anodes were used with an aluminum cathode. Platinum anodes were not inert at certain combinations of temperature and current density, …
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Polygonization in Bent Zinc Crystals
Made available in DSpace on 2014-12-04T23:26:49Z (GMT). No. of bitstreams: 1 6104378.pdf: 2857576 bytes, checksum: eba2cb6db2676d28a56a5a117ce060d1 (MD5) Previous issue date: 1961
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The analysis of crude zinc
Made available in DSpace on 2017-11-30T22:46:15Z (GMT). No. of bitstreams: 2 5956149.pdf: 4096570 bytes, checksum: 3a2726a1f2f52849c52da8d5525a99f0 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1893
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Water minimisation at Skorpion zinc
… of the water balance of the Skorpion Zinc refinery, the case study selected for this work. The Skorpion process is located in Rosh Pinah in Namibia and was selected due to its location on an ecologally sensitive region where water is scarce. The project proposes that peocess …
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