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Teses / dissertações sobre o tema "Cobalt and copper"

Autor: Grafiati

Publicado: 3 de junho de 2025

Última modificação: 31 de julho de 2025

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1

England, Craig Dennis. "Properties of cobalt/copper and cobalt/palladium multilayers." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185707.

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The physical properties of Co/Cu and Co/Pd magnetic multilayers have been studied. The Co/Cu multilayers were prepared by sputtering, while the Co/Pd multilayers were made by sputtering and molecular beam epitaxy (MBE). Various x-ray diffraction techniques have been used to study the structure of the multilayers. Magnetometry techniques were used to study the magnetic properties. Various optical techniques have been used to investigate the magneto-optical properties. Brillouin light scattering spectroscopy was used to determine the effective elastic constants of the Co/Cu multilayers and the m

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2

Numprasanthai, Apisit Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "Binary skeletal copper-cobalt catalysts." Publisher:University of New South Wales. Chemical Sciences & Engineering, 2009. http://handle.unsw.edu.au/1959.4/43587.

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Binary skeletal metal catalysts were made by starting with a ternary alloy. The percursor alloys and catalysts were characterised using Optical Microscopy, X-ray Diffractometer, Scanning Electron Microscopy, Inductively Coupled Plasma (ICP) and BET surface area in term of morphologies, phase identification, surface area and pore structure. Skeletal copper catalyst presented high surface areas and consisted primarily of CuAl2 grains, with small well-dispersed areas of the Al-CuAl2 eutectic. The CuAl2 phase, which represented a tetragonal structure, showed large cell volumes resulted in a fine

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3

Setna, R. P. "Study of the decomposition of copper-cobalt alloys." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239277.

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4

Richards, G. M. "Deformation processes during creep of copper-cobalt alloys." Thesis, Swansea University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638656.

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5

Suggu, Santosh Kumar. "Modeling the electrodeposition process of copper on cobalt chrome." Thesis, Wichita State University, 2014. http://hdl.handle.net/10057/10983.

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A simulation is a computer program that helps in creating a real time abstract model of a process. Using simulations the costs of conducting experiments have come down and this has achieved flexibility in terms of optimizing parameters and durations. Electrodeposition is a process that uses electrical current to reduce dissolved metal cations from anode so that they form a metal coating on cathode. Electrodeposition is widely used for many applications varying from anti-corrosion coatings, decorative purposes to high precision nanotechnology cloaking devices. The objective of this research was

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6

Cooper, Joshaniel Francis Keany. "Electrodeposition, magnetism and growth studies of cobalt, nickel and copper." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610316.

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7

Mukhtar, Hassan. "Novel technology for the simultaneous recovery of metals from and the destruction of organic molecules in aqueous systems." Thesis, Brunel University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311238.

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8

Jiang, Xiong. "Electrochemical studies on the cementation of copper and cobalt with zinc." Thesis, Jiang, Xiong (1987) Electrochemical studies on the cementation of copper and cobalt with zinc. PhD thesis, Murdoch University, 1987. https://researchrepository.murdoch.edu.au/id/eprint/118/.

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The work described in this thesis deals mainly with a fundamental study of two cementation reactions, i.e., Cu(II)/Zn and Co(II)/Zn, using the electrochemical techniques of linear potential sweep voltammetry, cyclic vol tammetry, chronopotentiometry (stripping), capacitance measurements,ring current measurements and impedance spectroscopy. In addition, solution analysis, x-ray diffraction and scanning electron microscopy were employed to achieve a better understanding of the kinetics and mechanisms of the two cementations. The half reactions of the two systems were also investigated as an esse

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9

Jiang, Xiong. "Electrochemical studies on the cementation of copper and cobalt with zinc." Murdoch University, 1987. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20060816.135721.

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The work described i n this thesis deals mainly with a fundamental study of two cementation reactions, i.e., Cu(II)/Zn and Co(II)/Zn, using the electrochemical techniques of linear potential sweep voltammetry, cyclic vol tammetry, chronopotentiometry (stripping), capacitance measurements,ring current measurements and impedance spectroscopy. In addition, solution analysis, x-ray diffraction and scanning electron microscopy were employed to achieve a better understanding of the kinetics and mechanisms of the two cementations. The half reactions of the two systems were also investigated as an ess

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10

McGowan, Ross. "The origin of the Nchanga copper-cobalt deposits of the Zambian copperbelt." Thesis, University of Southampton, 2003. https://eprints.soton.ac.uk/402419/.

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11

Tottey, Stephen. "Copper transport and metal specificity in Synechocystis PCC 6803." Thesis, University of Newcastle Upon Tyne, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391269.

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12

Parker, Thomas Martin. "The creation of nanoscale structures on copper surfaces." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366007.

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13

Crowder, Janell M. "Homo- and Heterometallic Bis(Pentafluorobenzoyl)Methanide Complexes of Copper(II) and Cobalt(II)." Thesis, State University of New York at Albany, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10680674.

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<p> β-Diketones are well known to form metal complexes with practically every known metal and metalloid. Metal complexes of fluorinated β-diketones generally exhibit increased volatility and thermal stability compared to the non-fluorinated analogues, and thus are used extensively in various chemical vapor deposition (CVD) processes for the deposition of metal, simple or mixed metal oxides, and fluorine-doped metal oxide thin films. Furthermore, the electron-withdrawing nature of the fluorinated ligand enhances the Lewis acidity of a coordinatively unsaturated metal center which faci

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14

Rosenberg, Chico L. "Novel precursors for chemical vapour deposition of the metals copper, nickel and cobalt." Thesis, Imperial College London, 2003. http://hdl.handle.net/10044/1/11893.

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15

Zhang, Yousheng. "Polynuclear magnetic complexes of manganese(II), cobalt(II), nickel(II) and copper(II)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0014/NQ52856.pdf.

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16

Pérez, Galera Juana María. "Impregnated Cobalt, Nickel, Copper and Palladium Oxides on Magnetite: Nanocatalysts for Organic Synthesis." Doctoral thesis, Universidad de Alicante, 2016. http://hdl.handle.net/10045/57586.

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In this manuscript, the application of different nanocatalysts derived from metal oxides impregnated on the surface of the magnetite in different reaction of general interest in Organic Chemistry is described. In the First Chapter, a cobalt derived catalyst was used to study the hydroacylation reaction of azodicarboxylates with aldehydes. In the Second Chapter, a catalyst derived from copper was used to perform different reactions, including homocoupling of terminal alkynes and the subsequent hydration reaction to obtain the corresponding 2,5-disubstituted benzofurans, the reaction of alcohols

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17

Almeida, Fabio J. D. "Electronic states of epitaxial magnetic layers : metastable FCC iron and cobalt on copper (001)." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335578.

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18

Altahan, Mohammed Abdulredha. "Cobalt(III), copper(II), and nickel(II) coordination compounds as cations in polyborate chemistry." Thesis, Bangor University, 2017. https://research.bangor.ac.uk/portal/en/theses/cobaltiii-copperii-and-nickelii-coordination-comppounds-as-cations-in-polyborate-chemistry(ba5f189b-2229-481f-9d8d-0bdce17903a8).html.

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This thesis describes the synthesis and characterization of a number of polyborate compounds containing transition metal complex cations; most of these compounds contain 6-membered B3O3 boroxole rings within their structures. A total of twenty-six transition metal complex polyborate salts are reported: one contains the triborate monoanion, [B3O3(OH)4]-, three contain the tetraborate dianion [B4O5(OH)4]2-, twelve contain the pentaborate anion, [B5O6(OH)4]-, three contain the hexaborate dianion, [B6O7(OH)6]2- and five contain heptaborate anions (three of which are [B7O9(OH)5]2-, and two are [B7O

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19

Wannaparhun, Surasak. "Roles of supercooling and cooling rates in the microstructural evolution of copper-cobalt alloys." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0009180.

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20

Firth, Selwyn R. "Solubility in ammoniacal ammonium salt solutions of copper, nickel, and cobalt components of a waste product produced at Inco's Port Colborne Cobalt Refinery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ58741.pdf.

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21

Clark, Amy Louise. "Mechanisms of metal binding and resistance to toxic metals in bacteria from soils polluted with toxic metals." Thesis, University of Newcastle Upon Tyne, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341456.

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22

Heitmann, Sonja. "Cobalt copper multilayers : interplay of microstructure and GMR and recrystallization as the key towards temperature stability." LF, 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971248427.

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23

Bernau, Robin. "The geology and geochemistry of the Lumwana Basement hosted copper-cobalt (uranium) deposits, NW Zambia." Thesis, University of Southampton, 2007. https://eprints.soton.ac.uk/63758/.

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The Lumwana Cu±Co deposits Malundwe and Chimiwungo are examples of pre-Katangan mineralized basement that are located in the Domes Region of the Lufilian Arc, an arcuate North neo-Proterozoic fold belt, which hosts the Zambian and Congolese deposits that make up the Central African Copperbelt. The Lumwana deposits are situated within the Mwombezhi Dome; a Mesoproterozoic basement inlier consisting of highly sheared amphibolite grade schist to gneiss units that host the Cu±Co mineralization. Kinematic indicators such as s-c fabrics and pressure shadows on porphyroblasts suggest a top to the Nor

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24

Andersen, Claire. "Catalyse au cobalt et au cuivre : Couplages croisés entre des (pseudo)halogénures d'alkyle et des réactifs de Grignard." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLET048.

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La majorité des médicaments sur le marché possède un ou plusieurs noyaux aromatiques au sein de leurs structures. Si ces motifs sont souvent essentiels à l’interaction des molécules avec leur cible, leur présence en trop grand nombre peut avoir des conséquences néfastes sur les propriétés physico-chimiques ou sur la toxicité des candidats médicaments. Il est donc intéressant de remplacer ces motifs par des bioisostères d’aryle, notamment par des cycles tendus (cyclopropanes, cyclobutanes, bicyclo[1.1.1]pentanes). Au cours de ce travail de thèse, deux méthodes permettant le couplage entre des (

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25

Audemar, Maïté. "Hydrogénation catalytique de molécules biosourcées." Thesis, Poitiers, 2016. http://www.theses.fr/2016POIT2323/document.

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Face à une demande sans cesse croissante en ressources fossiles et une prise de conscience sociétale des enjeux environnementaux, un intérêt de plus en plus important est porté à la valorisation de la biomasse lignocellulosique comme source pour l'énergie et la chimie fine.Parmi les molécules d'intérêt pouvant provenir de la lignocellulose, le xylose un sucre en C5 est obtenu par hydrolyse de la fraction hémicellulosique. Ce dernier peut être hydrogéné en xylitol, un édulcorant. Les catalyseurs utilisés pour réaliser cette réaction ne sont pas stables ou sont à base de métaux nobles. Un des ob

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26

Rozdilsky, Ian. "3-D atomic scale characterisation of growing precipitates." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301389.

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27

尹業高 and Yegao Yin. "The preparation and structure determination of some copper, cobalt, iron and manganese complexes and the study of their properties." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31235463.

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28

Yin, Yegao. "The preparation and structure determination of some copper, cobalt, iron and manganese complexes and the study of their properties /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19668570.

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29

Doddridge, Bruce Germein. "Ligand exchange and substitution on five-coordinate complexes of copper (II), nickel (II) and cobalt (II) /." Title page, contents and summary only, 1986. http://web4.library.adelaide.edu.au/theses/09PH/09phd641.pdf.

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30

Проценко, Сергій Іванович, Сергей Иванович Проценко, Serhii Ivanovych Protsenko, Олена Вікторівна Федченко, Елена Викторовна Федченко, and Olena Viktorivna Fedchenko. "Strain resistive properties of films on the basis of copper and cobalt in wide deformation range." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20972.

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31

Archery, Evelyn. "Simultaneous absorptiometric determination of copper, nickel, iron and cobalt in refinery process streams : potential on-line application /." Link to the online version, 2005. http://hdl.handle.net/10019/957.

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32

Singh, Hira P. [Verfasser]. "Implementation of a Novel Technology for the Recovery of Cobalt from Copper Smelter Slags / Hira P. Singh." Aachen : Shaker, 2012. http://d-nb.info/1069046183/34.

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33

Ochoa-Landin, Lucas Hilario 1955. "Geological, sedimentological and geochemical studies of the Boleo copper-cobalt-zinc deposit, Santa Rosalia, Baja California, Mexico." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/288901.

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The Santa Rosalia basin is a NW-SE elongated and fault limited basin, which evolved from Upper Miocene to Pleistocene time. The transtensional Upper Miocene Santa Rosalia basin located in central Baja California, consists of almost 500 m of nonmarine to marine sedimentary rocks, with tuffaceous beds interbedded in its lower part. The sedimentary rocks consist of the Boleo Formation, which is 200 to 300 m thick and is dominated in its lower part by marine transgressive sediments and evaporite bodies followed by 170 to 300 m of clastic coarsening upward fan-delta marine-nonmarine sequence. The c

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34

Mathew, T. "Synthesis and characterization of mixed oxides containing cobalt, copper and iron and study of their catalytic activity." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2002. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2452.

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35

Straistari, Tatiana. "Synthesis and study of coordination compounds of cobalt, copper, palladium and nickel with polydentate ligands containing sulfur." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4352.

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Ce travail porte sur la synthèse, la caractérisation et l’évaluation en catalyse de réduction des protons en dihydrogène, de nouveaux complexes de Ni(II), Co(III), Cu(II) et Pd(II) basés sur des ligands de type thiosemicarbazone. La nature de l’espèce catalytique active a été étudiée par voltampérométrie cyclique et des propositions de mécanisme ont été formulés sur la base de calcul quantique de type DFT.Le premier chapitre introduit le contexte scientifique. Le second chapitre concerne la synthèse et la caractérisation des ligands de type N2S2 et des complexes mononucléaires associés de Ni,

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36

Straistari, Tatiana. "Synthesis and study of coordination compounds of cobalt, copper, palladium and nickel with polydentate ligands containing sulfur." Electronic Thesis or Diss., Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4352.

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Ce travail porte sur la synthèse, la caractérisation et l’évaluation en catalyse de réduction des protons en dihydrogène, de nouveaux complexes de Ni(II), Co(III), Cu(II) et Pd(II) basés sur des ligands de type thiosemicarbazone. La nature de l’espèce catalytique active a été étudiée par voltampérométrie cyclique et des propositions de mécanisme ont été formulés sur la base de calcul quantique de type DFT.Le premier chapitre introduit le contexte scientifique. Le second chapitre concerne la synthèse et la caractérisation des ligands de type N2S2 et des complexes mononucléaires associés de Ni,

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37

Stimeier, Maria [Verfasser]. "Influence of Copper and Cobalt Transition-Metal Complexes onto the High-Pressure Polymerisation of Ethene : Einfluss von Kuper- und Cobalt-Übergangsmetallkomplexen auf die Hochdruckpolymerisation von Ethen / Maria Stimeier." Düren : Shaker, 2020. http://d-nb.info/1210389665/34.

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38

Butterfield, Martin Thomas. "Surface structure of ultrathin metal films deposited on copper single crystals." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/33132.

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Ultrathin films of Cobalt, Iron and Manganese have been thennally evaporated onto an fcc Copper (111) single crystal substrate and investigated using a variety of surface structural teclmiques. The small lattice mismatch between these metals and the Cu (111) substrate make them an ideal candidate for the study of the phenomena of pseudomorphic film growth. This is important for the understanding of the close relationship between film structure and magnetic properties. Growing films with the structure of their substrate rather than their bulk phase may provide an opportunity to grow materials w

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39

Carvalho, Luciana Batista de. "Autoxidação dos complexos de tetra, penta e hexaglicina de Ni(II), Co(II) e Cu(II) induzida por S(IV). Determinação de S(IV) e aldeídos por quimiluminescência." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/46/46133/tde-30032007-153520/.

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A autoxidação dos complexos de Ni(II) e Co(II) com tetra, penta e hexaglicina, em meio de tampão borato, é acelerada por espécies de enxofre (IV) (H2S0<SUB3, HS03-e SO32-). A formação dos complexos de Ni(III) e Co(III) foi acompanhada espectrofotometricamente em 325 e 265 nm, respectivamente. A velocidade da reação de autoxidação do complexo de Ni(II)/Gn aumenta com a concentração de S(IV) e é máxima em pH Ξ8,5. O processo é autocatalítico com Ni(III)ou Co(III)atuando como iniciadores, forma~os pela oxidação espontânea de Ni(II) ou Co(II) pelo oxigênio molecular. A dependência da constant

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40

Tonigold, Markus [Verfasser]. "Novel copper- and cobalt-based metal-organic polyhedra and frameworks : synthesis, structure, properties and applications / Markus Stefan Tonigold." Ulm : Universität Ulm. Fakultät für Naturwissenschaften, 2012. http://d-nb.info/1019563249/34.

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41

Lidiard, Henrietta M. "Geochemical aspects of copper, cobalt and iodine responsive diseases in the mineralised area of Heasley Mill, North Devon." Thesis, University of Reading, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332251.

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42

Royet, Kévin. "La réponse au stress chez les bactéries : réponse au stress métallique chez Pseudomonas putida et au stress rencontré en cours d’infection de plante chez le phytopathogène Dickeya dadantii." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1206/document.

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Les bactéries environnementales font face à de très nombreux stress dans leur milieu devie. Ces dernières doivent s’acclimater rapidement pour faire face à des variations detempérature, des changements d’osmolarité, des changements de pH ou encore descarences nutritives afin de survivre et de prospérer dans leur environnement naturel. Cetravail de thèse s’inscrit dans l’étude de la réponse aux stress chez les bactériesenvironnementales en prenant l’exemple du stress engendré par les métaux chez labactérie modèle Pseudomonas putida et du stress rencontré en cours d’infection deplante chez le ph

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43

Vicary, Amanda Denise. "Aspects of nickel uptake and resistance in the yeast Saccharomyces cerevisiae." Thesis, Keele University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368986.

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44

Malik, M. S. "Comparative studies of the electronic properties of copper tellurite glasses containing nickel, cobalt and lutetium oxides and cupric chloride." Thesis, Brunel University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235019.

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45

Spicer, M. D. "Higher oxidation state complexes of group Vb and VIb donor atom ligands : Compounds with cobalt(III) and copper(III)." Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382971.

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46

Roebuck, James William. "Reagents for selective extraction of nickel(II), cobalt(II) and copper(II) from highly acidic sulfate feeds containing iron." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/17976.

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This thesis focuses on development of new regents which are suitable for recovering nickel, cobalt and copper from laterite leach solutions, specifically focusing on reagent requirements for novel base metal flowsheets developed by Anglo American. The work aims to design reagents which can extract nickel(II), cobalt(II) and copper(II) from a highly acidic aqueous sulfate solutions whilst showing selectivity over iron(II) and iron(III). Chapter 1 reviews current extractive metallurgy processes for separating and concentrating metals in laterite ores and describes new flowsheets proposed by Angl

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47

Katombe-Kisumbule, Paul. "Geochemical exploration for copper - cobalt in the Democratic Republic of Congo, Central African Copperbelt: a case study on PR851." Thesis, Rhodes University, 2016. http://hdl.handle.net/10962/3035.

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The PR851 licence area is located at about 80 km west from the town of Likasi in the district of Haut-Katanga and 175 km north-west of Lubumbashi, the capital city of Katanga Province in the Democratic Republic of Congo. The exploration licence was granted by the government of the Democratic Republic of Congo to First Quantum Minerals Ltd through its Congolese subsidiary Compagnie Minière de Sakania Sprl (CoMiSa Sprl) under certificate N˚ CAMI/CR/70/2003 on the 10th of October 2003 for a period of 5 years with a possibility of renewal for 3 years in respect to the new Congolese mining code. Th

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48

Van, Wyk Gert Stefanus. "The effect of copper as a chemical promoter on the performance of a cobalt based Fischer-Tropsch synthesis catalyst." Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/5389.

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Bibliography: leaves 46-49.<br>In the light of the fact that copper is used as a promoter for the iron catalyst and that the industry is looking at a commercial FT synthesis cobalt catalyst, it is essential to reinvestigate the effect of copper on a cobalt catalyst. Copper has an effect on the overall activity of iron and cobalt [Kolbel, 1951, J. Schwank, 1991], but the reasons are not clearly understood. In the present study the role of copper as a promoter on the performance of 16.67% (wt) Co/Si02 is investigated with TPR, CO chemisorption, TEM and FT synthesis.

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Fay, Hannah Isabel. "Studies of Copper-Cobalt Mineralization at Tenke-Fungurume, Central African Copperbelt; and Developments in Geology between 1550 and 1750 A.D." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/319897.

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The contents of this dissertation fall into two broad areas: geology and history of geology. Although apparently unrelated, the two categories in fact parallel one another. The development of geological systems finds a mirror, on a shorter timescale, in the development of the human understanding of geological systems. The present state of a science - like the present state of an earth system - represents the concatenation of many subtle or evident processes and influences operating over time. Moreover, the events of the past condition the state of the present in science as well as in objects o

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Amri, Amun. "Structural, optical and mechanical characterisations of nanostructured copper cobalt oxide coatings synthesised via Sol-gel method for solar selective absorber." Thesis, Amri, Amun (2013) Structural, optical and mechanical characterisations of nanostructured copper cobalt oxide coatings synthesised via Sol-gel method for solar selective absorber. PhD thesis, Murdoch University, 2013. https://researchrepository.murdoch.edu.au/id/eprint/28838/.

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The search for clean renewable energy sources to fulfil global energy needs, incorporating environmentally-friendly technologies, is currently unabated. Solar thermal collectors are technologies that harness unlimited solar radiation then convert it into usable heat for numerous industries or domestic needs. The solar selective absorber thin film coating is the key component in determining the efficiency of a solar thermal collector. Many challenges still exist in terms of the fabrication of high quality selective absorber material, in order to meet the criteria of better cost-effectiveness an

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