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Дисертації з теми "Zinc concentration"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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1

Simon, Kathryn D. "Effect of cellular zinc concentration on glucocorticoid induced gene expression." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-06062008-155344/.

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2

Wilcox, Jeffrey Kendall. "Influence of pH on zinc adsorption by kaolinite, montmorillonite, and Londonderry clay." Thesis, The University of Sydney, 1994. https://hdl.handle.net/2123/26746.

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Анотація:

The adsorption of zinc ions as a function of pH and total dissolved metal concentration was experimentally investigated for three types of clays (kaolinite. montmonllonite. and Londonderry). The results indicate increases in adsorption of the zinc ions occurs with increases in pH for each of the three clays. Langmuir and Freundlich isotherms were created for each of the clay types.

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3

Charles, Sébastien. "Détermination par fluorescence moléculaire de la concentration du cadmium et du zinc en milieu marin." Doctoral thesis, Universite Libre de Bruxelles, 2001. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211560.

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4

Kelly, Susan. "Geochemical dispersion and concentration of Pb and Zn in soils of the northern Midlands of Ireland." Thesis, Queen's University Belfast, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343030.

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5

Eagling, Tristan. "A comparative study of iron and zinc concentration, localization, speciation and bioavailability in two wheat cultivars." Thesis, University of East Anglia, 2013. https://ueaeprints.uea.ac.uk/49476/.

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Iron (Fe) and Zinc (Zn) deficiency remains a prevalent nutritional disorder worldwide, disproportionally affecting people of low and middle income countries due to the reliance on non-meat sources in the diet. Cereals, a relatively poor Fe and Zn source, account for over 50% of the energy intake in developing countries, and are a potentially important target for biofortification strategies aimed at improving dietary Fe and Zn content and utilisation. The effectiveness of a crop in combating Fe and Zn deficiency is largely dependent on Fe and Zn speciation, as different forms vary in their bioa

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6

Fike, Wonae Bong. "Sorption of Cadmium, Copper, Lead, and Zinc as influenced by pH, ionic strength and selected soil components." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/29430.

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Metals sorption in soils is influenced by several factors, including pH, ionic strength, the presence of ionic composition or organic ligands, total amount of metals, and adsorbent loading. These conditions should be considered when evaluating metal sorption capacity of soil material or when applying laboratory results to field conditions. Metal sorption experiments were conducted on Bertie sandy and Starr-Dyke clay loam soils from long-term field studies in which soils received annual applications of copper-rich pig manure for 16 years. Adsorption of Cd, Cu, Pb, and Zn as affected by diffe

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7

Zetzsche, Alina [Verfasser]. "Studies on the influence of zinc on trace element status of neonatal piglets and copper concentration in kidney of weaned piglets including zinc-related genes / Alina Zetzsche." Berlin : Freie Universität Berlin, 2020. http://d-nb.info/1204431116/34.

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8

Gheorghiu, Cristina. "Concentration-dependent effects of waterborne zinc on the interactions between Gyrodactylus turnbulli (Monogenea) and the guppy (Poecilia reticulata)." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102979.

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Анотація:

This research investigated the effects of waterborne zinc (Zn) on the interactions between guppies, Poecilia reticulata (Peters), and Gyrodactylus turnbulli Harris, 1986, a monogenean parasite of its skin and fins. The first objective was to determine if sublethal concentrations of waterborne Zn (up to 240 mug/L added to artificial freshwater) exerted a concentration-dependent effect on the population dynamics of Gyrodactylus on isolated guppies. Whereas survival of uninfected fish was unaffected, mortality of infected fish increased linearly with increasing Zn concentration. In addition, the

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9

Знаменщиков, Ярослав Володимирович, Ярослав Владимирович Знаменщиков, Yaroslav Volodymyrovych Znamenshchykov, et al. "Influence of zinc concentration on structural and optical properties of polycrystalline CZT thick films obtained by the close spaced sublimation." Thesis, Цифра принт, 2016. http://essuir.sumdu.edu.ua/handle/123456789/46084.

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This paper reports results of studying of effect of zinc concentration on structural and optical properties of Cd1-xZnxTe thick films. Also the possibility of obtaining of high-quality thick polycrystalline CZT films with high Zn concentration (x>0.1) will be established.

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10

Frontier, Jean-Pierre. "Contribution à la détermination de profils de concentration par émission X induite par bombardement de protons : application à l'étude de la diffusion du zinc dans l'alliage Ag-Zn." Paris 11, 1987. http://www.theses.fr/1987PA112006.

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Ce travail est une contribution à l'étude des possibilités d'utiliser l'émission de rayonnements X induits par bombardement de protons (P. I. X. E. ) pour relever la répartition des éléments présents sous la surface des corps solides, dans une gamme de profondeurs comprise entre 1 et 10 micromètres et plus. On exprime sous forme d'une intégrale de convolution l'intensité des rayonnements X caractéristiques de l’élément étudié, et l'on montre que l'on peut, en principe, relever la concentration de cet élément en fonction de sa distance à la surface, en déconvoluant les intensités mesurées lors

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11

Bolle, Bernard. "Etude par diffraction des rayons X de la formation d'une couche de laiton par dépôt d'une couche de cuivre et de zinc et diffusion." Metz, 1994. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1994/Bolle.Bernard.SMZ9463.pdf.

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Cette étude présente les travaux réalisés pour analyser, par diffraction des rayons X, une couche de laiton obtenue par dépôt séquentiel de cuivre et de zinc et diffusion. Nous montrons que la diffraction des rayons X est une méthode d'analyse puissante des couches minces. Nous étendons le principe et les méthodes d'analyse quantitative de phases au cas des matériaux hétérogènes. Nous mettons en évidence l'importance du caractère hétérogène dans le calcul des proportions des phases des couches minces. Nous présentons la méthode de Houska de détermination du profil de concentration par simulati

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12

Prescod, Alexia. "Divergent effects of zinc, protein and energy deficiencies on skeletal muscle mass, muscle fiber diameter and serum insulin-like growth factor-1 concentration in growing rats." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0005/MQ32222.pdf.

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13

Frontier, Jean-Pierre. "Contribution à la détermination de profils de concentration par émission X induite par bombardement de protons application à l'étude de la diffusion du zinc dans l'alliage Ag-Zn /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376052186.

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14

Lesoin, Sapho. "Migration cationique et anionique des métaux toxiques (Plomb, Chrome et Zinc) dans les sols sous l'effet d'un champ électrique." Phd thesis, Ecole Nationale des Ponts et Chaussées, 1997. http://tel.archives-ouvertes.fr/tel-00529773.

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Cette étude est une contribution à l'étude de la dépollution des sols à l'aide d'une modélisation expérimentale. L'objectif du travail est d'étudier les processus physico-chimiques intervenant au cours du transport de polluants métalliques toxiques dans les sols soumis à un champ électrique. Les essais sont réalisés en laboratoire avec des sols obtenus à partir d'un mélange d'un sable de Fontainebleau avec une solution cationique de polluant. Les polluants étudiés sont des métaux amphotères dont le plomb(II), le chrome(III) et le zinc(II), avec des concentrations initiales variant de 0,1 à 10

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15

Lesoin, Sapho. "Migration cationique et anionique des métaux toxiques (plomb, chrome et zinc) dans les sols sous l'effet d'un champ électrique." Phd thesis, Marne-la-vallée, ENPC, 1997. http://www.theses.fr/1997ENPC9728.

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L’objectif de cette étude est de déterminer les processus physico-chimiques intervenant sur l'efficacité du transport de métaux lourds dans les sols soumis à un champ électrique. Les polluants métalliques peuvent sous l'effet d'un champ électrique se déplacer par migration dans un milieu poreux. Le passage du courant électrique dans un sol sature en eau provoque la formation des espèces h#3o#+ et oh# par électrolyse de l'eau. Ce mécanisme modifie les valeurs du ph du milieu et entraine une solubilisation ou une précipitation des métaux lourds sous forme d'hydroxydes. Sous des conditions de ph

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16

Gejam, Emadeddin Hassan. "Zinc recovery from wastes and the environment at low concentrations." Thesis, Swansea University, 2010. https://cronfa.swan.ac.uk/Record/cronfa43001.

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This thesis concerns the selective recovery of low concentrations of Zn from waste materials using a number of integrated unit operations to produce a high purity material of high value. The emphasis of the processes investigated is to carry out these processes with high efficiency and low energy. A literature survey revealed that a promising hydrometallurgical approach was to concentrate Zn from low concentration using polymer enhanced ultrafiltration (PEUF) using polyethylenimine (PEI) as filterable metal chelator; followed by alkaline precipitation of the chloride salt to form Zn(OH)2; the

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17

Finch, S. "An investigation of novel approaches for sensing aluminium concentrations in molten zinc." Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599015.

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Accurate control of the aluminium concentration of Hot Dip Galvanising (HDG) baths is of critical importance to produce galvanised steel with the optimum coating microstructure and hence desired chemical and physical characteristics. As HDG is a continuous process, a means of continuously monitoring the aluminium level is required. Through on-line monitoring, for example by electrochemical sensors, the aluminium content can be maintained at the desired level at all times and hence the coating composition controlled continuously. A brief study of sensors based upon NaAlCl<SUB>4</SUB>(I)/NaCl(s)

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18

Chan, Toong Khuan. "Stress concentrations in weld heat affected zones in aluminium-zinc-magnesium alloy." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259442.

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19

Galyas, Éva. "Concentrations of lead, copper and zinc in forest soils near industrial areas." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-40363.

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Анотація:

Environmental contamination with heavy metals, especially of soils, has been a continuousproblem worldwide since the beginning of the industrial revolution. Heavy metal emissionshave increased continuously since 1900 and the metals accumulate in the environment. Pulpand paper mill factories, and factories which produce sulphuric acid emit heavy metals,among others lead (Pb), copper (Cu) and zinc (Zn). Results from previous studies showedthat the soils near factories had higher concentrations of these pollutants than the controlplace. In this study I want to determine the effects of industrial

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20

Singbo, Arnaud. "The effect of zinc and soil ph on grain yield and nutrient concentrations in spring wheat cultivated on potted soil." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2845.

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Thesis (MTech (Agriculture))--Cape Peninsula University of Technology, 2018.<br>Zinc deficiency on various soil types have been reported in arable soils of sub Saharan Africa (SSA) including South Africa. A pot trial was conducted at the Cape Peninsula University of Technology, Wellington campus to investigate the interaction of different application rates of Zn at various soil pH on the grain yield and quality of spring wheat in a completely randomized factorial design replicated three times. The four soil pH tested were: pHA: 5.1, pHB: 5.6, pHC: 6.1, pHD: 6.6 which correspond to lime applica

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21

Schell, Timothy C. "Supplementing weanling pigs with high concentrations of Zn and the Zn availability of Zn sources for weanling pigs." Diss., This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-09192008-063113/.

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22

GERARD, BRUNO. "Luminescence retardee stimulee electriquement dans les sulfures de zinc et de cadmium actives au cuivre, a l'or ou a l'argent et coactives a l'aluminium : application a un imageur mammographique numerique a memoire." Paris 6, 1988. http://www.theses.fr/1988PA066252.

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Анотація:

Etude de la faisabilite de cet imageur utilisant, comme principe d'acquisition de l'image x, l'effet gudden-pohl, phenomene de luminescence retarde stimulee electriquement (lse). Seuls zns et cds dopes par cu, au ou ag donne l'effet lse adequat apres une phase de sensibilisation. Variation de la luminescence en fonction de la dose de rayons x, du champ electrique, de la temperature, du dopage, etc. Modelisation de l'effet lse: l'enregistrement de l'image se fait par piegeage de trous sur des accepteurs dans la couche d'appauvrissement superficielle, la recombinaison radiative se produisant ave

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23

Healy, Daniel Francis. "The depression of sphalerite during carbon pre-flotation and lead flotation at the Century Mine concentrator." Thesis, Curtin University, 2005. http://hdl.handle.net/20.500.11937/1787.

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The differential lead-zinc flotation process has been practised since 1912, yet selectivity in the process remains a significant technical issue in many operations. The minerals processing operation at Zinifex Limited's Century Mine, which uses differential flotation, began in November 1999 and the flotation behavior of the ore remains a major research interest. The present study was aimed to determine the possible mechanisms of sphalerite recovery during carbon pre-flotation and lead flotation in this operation including identification of the variables that affect these two flotation stages a

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24

Wilt, Heather Dawn. "Supplementation of zinc and biotin : effect on growth performance, plasma and fecal zinc concentrations, and metabolic capacities and biochemcal phenotypes of fecal flora in nursery pigs /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1426115.

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25

Calzavara, Yoann. "Liens entre évolution structurale et propriétés physiques de fluides autour de leur point critique par absorption X et diffusion X aux petits angles." Université Joseph Fourier (Grenoble ; 1971-2015), 2001. http://www.theses.fr/2001GRE10086.

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Анотація:

Cette these a pour but l'etude de l'evolution electronique et structurale a l'echelle microscopique de fluides au voisinage de leur point critique par absorption x ou diffusion x aux petits angles. Les experiences ont ete effectuees grace a un appareillage specifique hautes temperatures / pressions installees sur les lignes bm32 et bm2 de l'esrf de grenoble, synchrotron de 3 e m e generation. Nous nous sommes tout d'abord interesses a un systeme fondamental, le selenium, qui est un liquide covalent presentant une transition electronique semiconducteur-metal-isolant au voisinage du point critiq

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26

Harmanci, Ebru. "Utilization Of Waste Materials From Iron-steel And Zinc Industries For Sorption Of Hydrogen Sulfide At High Concentrations." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605240/index.pdf.

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The slags from iron-steel and zinc industries are rich in metal oxide contents like FeO, MnO, CaO. However, these slags are not used extensively, except some usage in the cement industry. These slags can be used in removing H2S from waste gases from different industrial sources. The purpose of this research is to study the effect of initial concentration of H2S on the capacity and sorbent efficiency of waste materials from iron-steel and zinc industries. Experiments were conducted in a 25 mm-quartz reactor with simulated gases containing H2S as reactive gas. Breakthrough curves for sulfidatio

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27

Healy, Daniel Francis. "The depression of sphalerite during carbon pre-flotation and lead flotation at the Century Mine concentrator." Curtin University of Technology, Western Australian School of Mines, 2005. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=16397.

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Анотація:

The differential lead-zinc flotation process has been practised since 1912, yet selectivity in the process remains a significant technical issue in many operations. The minerals processing operation at Zinifex Limited's Century Mine, which uses differential flotation, began in November 1999 and the flotation behavior of the ore remains a major research interest. The present study was aimed to determine the possible mechanisms of sphalerite recovery during carbon pre-flotation and lead flotation in this operation including identification of the variables that affect these two flotation stages a

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28

Wolterson, Eveline Valerie. "The effects of poultry manure versus inorganic fertilizer use on copper, manganese and zinc concentrations on soils under raspberry cultivation." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29340.

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The effects of poultry manure versus inorganic fertilizer use on copper, zinc and manganese concentrations and the sustainability of metal contents under raspberry cultivation was investigated on two aeolian soils in the Lower Fraser Valley, British Columbia. Total elemental analysis by a teflon bomb procedure using reverse aqua regia and hydrofluoric acid was done on soils sampled at three depths (0-15 cm, 15-30 cm and +40 cm) and results were compared to metal contents extracted by the Mehlich III method. High variability of some of the soil data was attributed to mixing of the loess capping

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29

KETTANI, SUAUD NADIA. "Influence du sevrage sur les concentrations sanguines et urinaires du zinc, du cuivre, du fer et du plomb chez l'ethylique chronique." Angers, 1992. http://www.theses.fr/1992ANGE1021.

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30

Burris, Karen R. "Heavy Metal Soil Concentrations in the Urban Toledo, Ohio Area: Legacy of Human Activities." Bowling Green State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1610108035866699.

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31

Cornu, Jean-Yves. "Evolution temporelle de la concentration de Cd²⁺ en solution de sol au cours d'une culture végétale : impact sur l'exposition racinaire." Bordeaux 1, 2007. http://www.theses.fr/2007BOR13516.

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Анотація:

La contamination des sols par les éléments traces métalliques constitue un danger pour la santé humaine, notamment /via/ la contamination de la chaîne alimentaire. Le cadmium (Cd) présente un danger particulièrement important en raison de sa forte toxicité à long terme pour l’homme (source INRS) et de sa capacité élevée de transfert du sol vers les parties consommées des végétaux. Le développement d’outils prédictifs du transfert sol-plante de Cd est de ce fait à favoriser. Il passe par la compréhension et la modélisation du transfert de Cd du sol vers la racine végétale. Dans ce contexte, l'o

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32

Leitemperger, Jossiele Wesz. "PARÂMETROS BIOQUÍMICOS EM JUNDIÁS EXPOSTOS AO ZINCO." Universidade Federal de Santa Maria, 2014. http://repositorio.ufsm.br/handle/1/11238.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The contamination of the aquatic environment occurs as a consequence of industrial, agricultural and anthropogenic activities. Aquatic ecosystems are often contaminated with metals such as copper and zinc, which are essential in low concentrations but toxic at high concentrations. Thus, the aim of this study was to establish the mean lethal concentration (LC50) within 96 hours of zinc for silver catfish (Rhamdia quelen) and to evaluate the possible effects on biochemical parameters of fish exposed to 0.0 (control), 1.0 and 5.0 mg/L

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33

Petersson, Liselott. "Traffic-Related Metals in Soil and Sediment in Mauritius." Thesis, Uppsala University, Department of Earth Sciences, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-88833.

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<p>Trafik utgör en stor föroreningskälla av tungmetaller i vägnära jordar och särskilt är det koppar (Cu), bly (Pb) och zink (Zn) som associeras med fordonstrafik. I ett historiskt perspektiv härrör blyutsläpp främst från bränsleförbränning, medan kopparemissioner (i första hand från slitage av bromsbelägg) och zinkutsläpp (från däck) från trafik står för så mycket som hälften av det urbana utsläppet av koppar och zink till omgivningen.</p><p>Koppar-, bly- och zinkkoncentrationer i vägnära jord och sediment undersöktes inom avrinningsområdet för Grand River North West i Mauritius. Eftersom tot

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34

Dal'Bo, Frédéric. "Spectroscopie optique d'heterostructures a base de tellurure de cadmium epitaxiees par jets moleculaires." Grenoble 1, 1988. http://www.theses.fr/1988GRE10123.

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La relaxation des contraintes est mise en evidence par une etude spectroscopique des transitions des excitons libres et varie en fonction de l'epaisseur de la couche et de l'orientation du support. Les differences entre les spectres de photoluminescence des materiaux massifs et ceux des couches epitaxiees sont dues aux effets des contraintes, aux defauts cristallins et aux impuretes introduites pendant la croissance. La structure de bande du puits quantique contraint est etudiee par spectroscopie optique. Elle est etudiee en fonction de l'epaisseur du puits

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35

Young, Aaron Samuel. "Uso da separação automática por sensor de raio X na pré-concentração de minérios : ferro e zinco." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/178315.

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O COMEX Lab-Sorter MSX-400-VL-XR-3D (Sorter) foi avaliado, sob diferentes condições operacionais em relação a sua capacidade de realizar testes de pré-concentração em escala laboratorial, visando o uso dos resultados gerados para aplicação industrial. Para tal, 24 testes de separação (bem como mais testes de calibração) foram realizados para dois minérios diferentes (a base de ferro e zinco). Nesses testes, aproximadamente 73 kg de minério foram avaliados para fins de separação no equipamento acima citado. Este mostrou a capacidade de aumentar o teor do minério de ferro acima de 60% Fe, aprove

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36

Johansen, Jonathan Frederick. "Mathematical modelling of primary alkaline batteries." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16412/1/Jonathan_Johansen_Thesis.pdf.

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Three mathematical models, two of primary alkaline battery cathode discharge, and one of primary alkaline battery discharge, are developed, presented, solved and investigated in this thesis. The primary aim of this work is to improve our understanding of the complex, interrelated and nonlinear processes that occur within primary alkaline batteries during discharge. We use perturbation techniques and Laplace transforms to analyse and simplify an existing model of primary alkaline battery cathode under galvanostatic discharge. The process highlights key phenomena, and removes those phenomena

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37

Johansen, Jonathan Frederick. "Mathematical modelling of primary alkaline batteries." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16412/.

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Three mathematical models, two of primary alkaline battery cathode discharge, and one of primary alkaline battery discharge, are developed, presented, solved and investigated in this thesis. The primary aim of this work is to improve our understanding of the complex, interrelated and nonlinear processes that occur within primary alkaline batteries during discharge. We use perturbation techniques and Laplace transforms to analyse and simplify an existing model of primary alkaline battery cathode under galvanostatic discharge. The process highlights key phenomena, and removes those phenomena

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38

Silva, Amanda Garcia da. "Estudo da ocorrência de arsênio, cobre, chumbo e zinco em drenagens na área da mina Cerro Rico em Lavras do Sul – RS - Brasil." Universidade Federal do Pampa, 2017. http://dspace.unipampa.edu.br:8080/jspui/handle/riu/3458.

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Submitted by Rosimeri Vergara (rosimerivergara@unipampa.edu.br) on 2018-11-14T21:01:08Z No. of bitstreams: 1 Dissertação Amanda Garcia da Silva 2017.pdf: 3259899 bytes, checksum: 470c3b10660c990219f4d523aede3d02 (MD5)<br>Approved for entry into archive by Dayse Pestana (dayse.pestana@unipampa.edu.br) on 2018-11-19T16:13:59Z (GMT) No. of bitstreams: 1 Dissertação Amanda Garcia da Silva 2017.pdf: 3259899 bytes, checksum: 470c3b10660c990219f4d523aede3d02 (MD5)<br>Made available in DSpace on 2018-11-19T16:13:59Z (GMT). No. of bitstreams: 1 Dissertação Amanda Garcia da Silva 2017.pdf: 3259899 bytes

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Ramboz, Claire. "Métamorphisme hydrothermal et réactions d'oxydo-réduction en contexte de marge passive et de zone de cisaillement ductile : genèse des concentrations Zn-Pb et graphite associées." Phd thesis, Institut National Polytechnique de Lorraine - INPL, 1988. http://tel.archives-ouvertes.fr/tel-00617110.

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Cette thèse rassemble 4 publications originales relatives à différents aspects de l'interaction entre fluides et minéraux dans les contextes de marge passive et de cisaillements ductiles. Une approche cristallochimique démontre la présence d'associations à grenats et de pyroxènes non stœchiométriques, formes dans des conditions hyperréductrices dans des skarns à graphite (Sidi Bou Othmane, Maroc) et met en évidence des pressions de fluides anormales dans le gisement Zn-Pb des Malines (bordure cévenole, France). Les conditions thermiques de l'alimentation hydrothermale de la fosse à saumures d'

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40

Paveley, C. F. "Heavy metal sources and distribution in soils, with special reference to Wales : Background ranges, threshold concentrations and sources of lead, zinc, copper, cadmium, cobalt, nickel, manganese and iron in A and B soil horizons." Thesis, University of Bradford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233744.

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41

Maziero, Sandra Maria. "Seleção de linhagens de feijão de alto desempenho agronômico e biofortificadas para potássio, fósforo, zinco e cobre." Universidade Federal de Santa Maria, 2014. http://repositorio.ufsm.br/handle/1/3237.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Considering the expansion of grown of common bean for large mechanized areas and the need of biofortication of basic foods consumed by the Brazilian population, to minimize minerals deficiencies, obtaining common bean lines with high agronomic performance and higher minerals concentration in the grains represents technological advances for the culture. The objectives of this study were: (1) to estimate the genetic parameters for morphological, phenological, grain yield and nutritional characters in four biofortified populations o

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42

Korkalo, T. (Tuomo). "Gold and copper deposits in Central Lapland, Northern Finland, with special reference to their exploration and exploitation." Doctoral thesis, University of Oulu, 2006. http://urn.fi/urn:isbn:951428108X.

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Abstract At least 30 gold deposits verified by means of one or more notable diamond drill hole results have been discovered in Central Lapland in the last 20 years, and these can be divided spatially into groups, between which the metal composition varies. The deposits contain varying amounts of sulphides and sulpharsenides as well as gold. Pyrite is the most common sulphide mineral in the gold deposits associated with volcanic rocks, and usually pyrrhotite in those associated with sedimentary rocks. The principal sulphide minerals in those connected with banded iron formations are pyrite and

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43

Ho, Cheng-Hsuan, and 何承軒. "The Effect of Surfactant Concentration on the Zinc Coating Electroplated in Supercritical CO2 Mixed Zinc Sulfate Bath." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/umy529.

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碩士<br>國立臺北科技大學<br>機電整合研究所<br>102<br>The electrodeposition of zinc coating on steel substrate in the zinc sulfate bath electrolyte mixed with supercritical carbon dioxide was investigated in this thesis. The control of current density and the addition of surfactant in the electrolyte were employed to improve the surface roughness and corrosion resistance of the fabricated zinc coating. With the coatings prepared under different controlled parameters, the ones obtained from the supercritical CO2 mixed electrolyte showed better surface roughness, more uniform coverage, and smaller grain size. Mor

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44

ZHANG, WEN-JIAN, and 章文簡. "Blood zinc and copper concentration in occupational exposure to carbon disulfide." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/13491858148252368518.

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45

Fu, Chiung-Lin, and 傅瓊琳. "Decreasing blood concentration of zinc and selenium in patient with endometriosis." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/54121624793815700650.

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46

Cheng, Li-Yi, and 鄭豊陭. "The Effect of NaF and Surfactant Concentration on the Zinc Coating Electroplated in Supercritical CO2 Mixed Zinc Chloride Bath." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/qpry7v.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>101<br>The thesis studies the electroplating of zinc in the zinc chloride bath mixed with supercritical CO2. The sodium fluoride and surfactant were used as the bath additives to change the structure and property of the coating, and therefore the roughness and corrosion resistance of the zinc coating was investigated. The surface characterization was performed using OM, SEM, XRD, a-step profilometer. Moreover, the soaked corrosion test and potentiodynamic polarization measurement in 3% NaCl solution was employed in the corrosion resistance evaluation. Because of th

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47

Chen, Yi-Chun, and 陳怡君. "The Effects of Copper and Zinc Concentration in Manure Composts on the Kohlrabi Growth and the Copper and Zinc Uptake." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/70729837561737240989.

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碩士<br>國立臺灣大學<br>農業化學研究所<br>98<br>The climate in Taiwan is characterized by high temperature and humidity, therefore, the soil organic matter is easily and rapidly decomposed. Using the manure compost to increase soil organic matter is one of the best ways to recycle the agricultural waste materials. However, the high concentration of heavy metals in the compost may produce some risk on the soil quality. The objective of this study is to investigate the effects of three commercial manure composts (A, B and C) with different levels of copper (Cu) and zinc (Zn) concentration (Cu 0~200 mg kg-1, Zn

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48

Huang, Yu-hsuan, and 黃郁琁. "Carrier Concentration Study of Bismuth Doped Zinc Oxide Films by Mist Chemical Vapor Deposition." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/n4tkyc.

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碩士<br>國立高雄大學<br>電機工程學系碩士班<br>102<br>In this thesis, we deposit the bismuth-doped zinc oxide thin film on c-sapphire substrates and n-Si substrates by mist chemical vapor deposition. The bismuth doping on the structural, electrical, optical and stability properties in thin films with different substrates were investigated. The p-type bismuth-doped ZnO with [Bi]/[Zn]=3 at.%, the carrier concentration of 2.8×1017cm-3 can be achieved on c-sapphire substrate. And the p-type bismuth-doped ZnO with [Bi]/[Zn]=0.5 at.%, the carrier concentration of 1.3×1017cm-3 can be achieved on n-Si substrate. With t

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49

Liu, Chin-Chia, and 劉晋嘉. "Investigation of blood lead and zinc concentration and hematology of small carnivores in Taiwan." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/18460719200107951916.

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碩士<br>國立臺灣大學<br>臨床動物醫學研究所<br>103<br>Lead has been recognized as the most widespread metal pollutant in cities and zinc is used as a very common element for industrial and daily use. The study aim is to investigate environmental lead and zinc pollution and the impaction on wildlife in Taiwan. Viverricula indica taivana, Paguma larvata taivana, Melogale moschata subaurantiaca, and Herpestes urva were included in this study for the investigation of lead and zinc concentration in blood of wild small carnivores in Taiwan. Two study areas were set up as different sample models, Yangmingshan National

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50

Hinojosa, Alfonso Juan. "Optical and structural properties of zinc based nanoparticles depend on temperature and molar concentration." 2008. http://hdl.handle.net/10106/1843.

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