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Dissertations / Theses on the topic 'Copper silicates'

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Published: 4 June 2021

Last updated: 20 February 2023

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1

Crane, Martin John, University of Western Sydney, of Science Technology and Environment College, and of Science Food and Horticulture School. "Geochemical studies of selected base metal minerals from the supergene zone." THESIS_CSTE_SFH_Crane_M.xml, 2001. http://handle.uws.edu.au:8081/1959.7/232.

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Acid leaching of different natural chrysocolla samples under ambient conditions demonstrated that the chemical and chrystallographic inhomogenity significantly affects the rate and that it is virtually impossible to use the mineral as a model for the kinetics of hydrometallurgical processing of copper ores.Dissolution experiments, stability diagrams,and X-ray powder diffraction studies are undertaken and studied in this research and results are given.It is found that a complete solid solution series exists in Nature with most tungstenian wulfenites and molybdenum stolzites containing a range o

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2

Crane, Martin John. "Geochemical studies of selected base metal minerals from supergene zone /." View thesis, 2001. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030721.132607/index.html.

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Thesis (PhD) -- University of Western Sdyney, 2001.<br>"A thesis presented in accordance with the regulations governing the award of the degree of Doctor of Philosophy, University of Western Sydney" "November 2001" Bibliography: leaves 249 - 254.

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3

Acapito, Francesco d'. "Étude structurale de verres silicates dopés au cuivre et à l'argent." Université Joseph Fourier (Grenoble ; 1971-2015), 1997. http://www.theses.fr/1997GRE10105.

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Dans ce travail nous avons analyse de petits agregats metalliques en verre dans le but d'en determiner les proprietes structurales, leur lien avec la reponse optique et l'influence de l'ordre locale sur les proprietes de diffusion des metaux dans les verres alkalino-silicates. - verres silicates implantes cu : la structure des agregats de cu formes par implantation ionique dans la silice amorphe a ete etudiee au point de vue morphologique et locale. Les techniques de diffusion et diffraction de rayons x en incidence rasante ont ete utilisees et ont permis de determiner la taille des particules

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4

PORFIRIO, TATIANE C. "Preparação e caracterização microestrutural e dielétrica da perovsquita CaCusub(3)Tisub(4)Osub(12)." reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/24066.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2015-10-28T11:10:50Z No. of bitstreams: 0<br>Made available in DSpace on 2015-10-28T11:10:50Z (GMT). No. of bitstreams: 0<br>Tese (Doutorado em Tecnologia Nuclear)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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5

SORDO, FILHO GIOVANNI del. "Estudo da adsorção de íons metálicos em caulinita para água de reuso." reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26394.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2016-06-22T14:16:56Z No. of bitstreams: 0<br>Made available in DSpace on 2016-06-22T14:16:56Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado em Tecnologia Nuclear)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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6

Student, James John. "Silicate Melt Inclusions in Igneous Petrogenesis." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/28719.

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Silicate melt inclusions are ubiquitous in quartz phenocrysts, yet there are few studies of such inclusions from porphyry copper systems. A melt inclusion forms when magma is trapped in a growing phenocryst. If a phenocryst is able to preserve the original parent magma, then accurate information can be obtained for ancient volcanic systems. In recent igneous systems, melt inclusions are commonly preserved as optically clear homogeneous glass representative of magma stored at depth before eruption. Melt inclusions are difficult to recognize in quartz phenocrysts from porphyry copper system

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7

Conrad, Heidi Ann. "Electrochemically Deposited Metal Alloy-silicate Nanocomposite Corrosion Resistant Materials." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc271794/.

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Zinc-nickel ?-phase silicate and copper-nickel silicate corrosion resistant coatings have been prepared via electrochemical methods to improve currently available corrosion resistant materials in the oil and gas industry. A layered silicate, montmorillonite, has been incorporated into the coatings for increased corrosion protection. For the zinc nickel silicate coatings, optimal plating conditions were determined to be a working pH range of 9.3 -9.5 with a borate based electrolyte solution, resulting in more uniform deposits and better corrosion protection of the basis metal as compared to aci

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8

Zhao, Xiaopeng. "Tantalum- and ruthenium-based diffusion barriers/adhesion promoters for copper/silicon dioxide and copper/low κ integration". Thesis, University of North Texas, 2004. https://digital.library.unt.edu/ark:/67531/metadc4672/.

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The TaSiO6 films, ~8Å thick, were formed by sputter deposition of Ta onto ultrathin SiO2 substrates at 300 K, followed by annealing to 600 K in 2 torr O2. X-ray photoelectron spectroscopy (XPS) measurements of the films yielded a Si(2p) binding energy at 102.1 eV and Ta(4f7/2) binding energy at 26.2 eV, indicative of Ta silicate formation. O(1s) spectra indicate that the film is substantially hydroxylated. Annealing the film to > 900 K in UHV resulted in silicate decomposition to SiO2 and Ta2O5. The Ta silicate film is stable in air at 300K. XPS data show that sputter-deposited Cu (300 K) di

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9

MacNevin, David. "THE EFFECTS OF PHOSPHATE AND SILICATE INHIBITORS ON SURFACE ROUGHNESS AND COPPER RELEASE IN WATER DISTRIBUTION SYSTEMS." Doctoral diss., University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3713.

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The effects of corrosion inhibitors on water quality and the distribution system were studied. This dissertation investigates the effect of inhibitors on iron surface roughness, copper surface roughness, and copper release. Corrosion inhibitors included blended poly/ortho phosphate, sodium orthophosphate, zinc orthophosphate, and sodium silicate. These inhibitors were added to a blend of surface water, groundwater, and desalinated brackish water. Surface roughness of galvanized iron, unlined cast iron, lined cast iron, and polyvinyl chloride was measured using pipe coupons exposed for three mo

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10

Grund, Bäck Lina. "Redox reactions and structure - properties relations in mixed alkali/alkaline earth glasses : - The role of antimony oxides during the fining process- A structural study of copper(I) and copper(II)." Doctoral thesis, Linnéuniversitetet, Institutionen för byggd miljö och energiteknik (BET), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-46782.

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It is important to optimize glass compositions for their specific purpose but also for the efficiency of the production process, the manufacturing of glass. This will be beneficial economically and environmentally. Today many processes and glass compositions are already optimized, but due to more strict legislation on toxic elements and substances there must be changes in many glass compositions. One of these elements is antimony; the oxide is used as fining agent to obtain a bubble free glass within a reasonable process time. One aim with this thesis is to obtain a deeper understanding of the

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11

Shiomi, Shohei. "Silicate Glass Coating on Copper Nanoparticles and Its Further Application to a Transparent Corrosion Resistant Film for Magnesium Alloys." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/188590.

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12

OLIVEIRA, Janaína Cortêz de. "Caracterização de isolados de Xanthomonas citri subsp. malvacearum e redução da mancha-angular do algodoeiro mediada pelo silício." Universidade Federal Rural de Pernambuco, 2010. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6601.

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Submitted by (lucia.rodrigues@ufrpe.br) on 2017-03-17T14:39:22Z No. of bitstreams: 1 Janaina Cortez de Oliveira.pdf: 616667 bytes, checksum: 9d56953508b1cd4518224b8966b15c92 (MD5)<br>Made available in DSpace on 2017-03-17T14:39:22Z (GMT). No. of bitstreams: 1 Janaina Cortez de Oliveira.pdf: 616667 bytes, checksum: 9d56953508b1cd4518224b8966b15c92 (MD5) Previous issue date: 2010-10-22<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The bacterial blight caused by Xanthomonas citri subsp. malvacearum (Xcm) is the most important bacterial disease of cotton in the Midd

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13

Isaksson, Jenny. "Slag Cleaning of a Reduced Iron Silicate Slag by Settling : Influence of Process Parameters and Slag Modification on Copper Content." Licentiate thesis, Luleå tekniska universitet, Mineralteknik och metallurgi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-84798.

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During the pyrometallurgical extraction of copper, a significant part of the copper is lost with discard slag, which decreases profits, overall copper recovery, and efficiency of raw material usage. Smelting furnace slag usually has a copper content that is close to or higher than that of copper ores. The investigation of copper losses to slag is thus a task of practical significance, as the ore grades are depleting. Slag cleaning, e.g., a settling furnace, can reduce copper losses to slag as the mechanically suspended copper-containing droplets separate from slag under the action of gravity a

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14

Lintereur, Phillip. "EFFECTS OF SOURCE WATER BLENDING FOLLOWING TREATMENT WITH SODIUM SILICATE AS A CORROSION INHIBITOR ON METAL RELEASE WITHIN A WAT." Doctoral diss., University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2967.

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A study was conducted to investigate and quantify the effects of corrosion inhibitors on metal release within a pilot distribution system while varying the source water. The pilot distribution system consisted of pre-existing facilities from Taylor et al (2005). Iron, copper, and lead release data were collected during four separate phases of operation. Each phase was characterized by the particular blend ratios used during the study. A blended source water represented a water that had been derived from a consistent proportion of three different source waters. These source waters included (1)

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15

Alves, Álvaro Santos. "Estudo de magnetos moleculares através de cálculos de primeiros princípios." Niterói, 2017. https://app.uff.br/riuff/handle/1/3966.

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Submitted by Biblioteca do Instituto de Física (bif@ndc.uff.br) on 2017-07-06T19:06:18Z No. of bitstreams: 1 tese.pdf: 4548404 bytes, checksum: f3c3be1c9d5bbc0d098d37be6674bd4b (MD5)<br>Made available in DSpace on 2017-07-06T19:06:18Z (GMT). No. of bitstreams: 1 tese.pdf: 4548404 bytes, checksum: f3c3be1c9d5bbc0d098d37be6674bd4b (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Universidade Estadual de Feira de Santana<br>Neste trabalho, utilizamos cálculos de primeiros princípios baseados na Teoria do Funcional da Densidade (DFT - Density Functional Theory) para inve

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16

Runtti, H. (Hanna). "Utilisation of industrial by-products in water treatment:carbon-and silicate-based materials as adsorbents for metals and sulphate removal." Doctoral thesis, Oulun yliopisto, 2016. http://urn.fi/urn:isbn:9789526212630.

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Abstract Pollutant (such as metals and sulphate) contamination exists in the wastewaters of many industries, including mining operations, metal plating facilities, and tanneries. Adsorption is one of the most commonly used processes for the removal of pollutants from waters and wastewaters due to its high efficiency and simple operation. Activated carbon is the most frequently used adsorbent material, although its high cost inhibits its widespread use in wastewater treatment. Therefore, there is a need to develop other adsorbents from alternative inexpensive raw materials such as locally avail

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17

CARMO, LUCAS S. do. "Dosimetria termoluminescente de altas doses de raios gama, raios beta, feixe de prótons e de nêutrons epitérmicos utilizando minerais naturais de silicatos e dosímetros de LiF: Mg, Cu, P (MCP)." reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/25192.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2015-11-12T10:02:52Z No. of bitstreams: 0<br>Made available in DSpace on 2015-11-12T10:02:52Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado em Tecnologia Nuclear)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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18

Chuan-LinChang and 張顓麟. "Synthesis of Porous Copper Silicates as Hydrogenation Catalyst." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/f32z47.

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19

Crane, Martin J. "Geochemical studies of selected base metal minerals from the supergene zone." Thesis, 2001. http://handle.uws.edu.au:8081/1959.7/232.

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Acid leaching of different natural chrysocolla samples under ambient conditions demonstrated that the chemical and chrystallographic inhomogenity significantly affects the rate and that it is virtually impossible to use the mineral as a model for the kinetics of hydrometallurgical processing of copper ores.Dissolution experiments, stability diagrams,and X-ray powder diffraction studies are undertaken and studied in this research and results are given.It is found that a complete solid solution series exists in Nature with most tungstenian wulfenites and molybdenum stolzites containing a range o

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20

Yen-WenChen and 陳彥文. "Synthesis and Application of Copper-Silicate Mesoporous Material." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/72225675200377895835.

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21

De-huang, Huang, and 黃德煌. "Leaching Behaviors of Copper Oxide Solidification/Stabilization Using Calcium Silicate Fixing Agent." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/96247005912477933125.

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22

黃德煌. "Leaching behaviors of copper oxide solidification/stabilization using calcium silicate fixing agent." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/50069932569240171299.

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23

Lee, Yi-Chen, and 李俋箴. "Silicate Platelets Supporting Copper Oxide and Zinc Oxide Particles for Antimicrobial Uses." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/74381904852346141886.

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碩士<br>國立臺灣大學<br>高分子科學與工程學研究所<br>104<br>The hybrids of zinc oxide, copper (II) oxide, silver oxide nanoparticles on the nanoscale silicate platelets (NSP) are synthesized and characterized by UV-visible spectroscopy, X-ray powder diffraction, and TEM. We employ the exfoliated silicate platelets to support and stabilize the nanoparticles. The particles-on-platelet nanohybrids are successfully synthesized and the naked nanoparticles associated with the NSPs are formed without organics contamination. It is suggested that the NSPs are suitable for supporting nanoparticles owing to their high aspect

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24

Pei-ChenChao and 趙培辰. "Synthesis and Application of Mesoporous Copper-Silicate Prepared by Using a Hydrothermal Treatment." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/88589349255587165098.

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碩士<br>國立成功大學<br>化學系碩博士班<br>100<br>For the concept of green chemistry, the scientists put much effort to reduce environmental pollution and slow down the greenhouse effect. It would be an important issue to control the effluent amount of waste water and toxic gas for the purpose of environmental protection. Mesostructural materials of high-surface area, tunable pore size and large pore volume have obvious potentials for the applications in adsorption, catalysis, enzyme-stabilization, and optical devices. In this research, we prepared the mesoporous copper-silicate of high surface area (〉 450

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25

Elliot, Barry John. "The effect of slag composition on copper losses to silica-saturated iron silicate slags." Thesis, 2015. http://hdl.handle.net/10539/17230.

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26

Hartley, JA. "Low toxicity preservatives for production of roundwood posts and poles." Thesis, 2020. https://eprints.utas.edu.au/47655/.

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A preservative that could be used to treat wood on farms would greatly increase the utility of farm timber and the profitability of timber production. Current preservatives are for the most part too toxic for use outside specialised treatment plants, or too expensive, or ineffectual. Many experimental preservatives appear to have potential, but remain untested or undeveloped. To test wood preservatives and develop wood preservatives for use on farms, an array of wood rotting fungi was grown from fruiting bodies collected on rotting wood and living trees. This process resulted in some new kno

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27

Wardojo, Tina Aryani. "Synthesis and characterization of manganese- and copper-based arsenate and silicate compounds with open-framework structures." Thesis, 1996. http://hdl.handle.net/1911/14049.

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Several arsenate and silicate compounds with interesting structural features have been synthesized by the molten salt flux method. These new materials were characterized by single crystal and powder X-ray diffraction, infrared spectroscopy, magnetic susceptibility, and elemental analysis. The compounds generally have an open-framework structural network, although some also exhibit layer-like or quasi-low-dimensional features. In the arsenate family of compounds, two copper arsenates, BaCuAs$\sb2$O$\sb7$ and $\rm Na\sb7Cu\sb4(AsO\sb4)\sb5,$ as well as two isomorphous manganese arsenates, NaMn$\

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28

Lowczak, C. R. "Copper isotope method development for determining the source of mineralised provinces." Thesis, 2019. https://hdl.handle.net/2440/136974.

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This item is only available electronically.<br>Many isotope proxies have been applied to study the prosperous iron oxide copper gold (IOCG) province in the eastern Gawler Craton (E.G.C) and Au mineralised region of the cental Gawler Craton (C.G.C), in Southern Australia. Yet, copper isotope proxies- an indicator for low temperature fluid flow and sulfide mineralisation- have yet to be applied to the region. In this study, purification techniques using automatic column chromatography were demonstrated during separation of Cu from matrix elements. Cu isotopes – 65Cu & 63Cu – were used to unde

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29

Prakasan, K. "Studies On Squeeze Cast Copper Based Metal Matrix Composites." Thesis, 1997. http://etd.iisc.ernet.in/handle/2005/1790.

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30

Etheredge, Kristen Miriam Sharon Gronberg. "Synthesis, characterization and magnetic property studies of copper-based phosphate and silicate compounds containing nanosize transition metal oxide frameworks." Thesis, 1996. http://hdl.handle.net/1911/16924.

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The search for novel compounds with nanosize transition metal oxide frameworks is important for the study and understanding of materials with interesting and important magnetic and electronic properties. These low-dimensional structural features have become associated with unusual physical phenomena such as charge density waves, magnetic ordering, and superconductivity. Exploratory synthesis of copper(II) and copper(I/II) phosphates containing oligomers, chains and layers has been investigated through the use of low-melting eutectic fluxes. Additionally, magnetic property studies of many of th

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31

He, Mingzhao. "The influence of adsorbed polymer on clay and copper mineral particles' interactions." 2009. http://arrow.unisa.edu.au:8081/1959.8/69122.

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Attractive particle interactions which lead to the hetero-aggregation or 'sliming' of silicate clay gangue and valuable sulphide mineral particles are encountered in a number of hydrometallurgical and flotation processes. Sliming leads to poor recovery of the valuable minerals and high recovery of the clay gangue minerals in flotation concentrates. In the present work, the hetero-aggregation mechanism of hydrophilic mica clay mineral sericite (or muscovite) and hydrophobic chalcocite was investigated by probing the particle interactions and the prevailing interfacial chemistry under dispersion

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32

Chan, Chien-Ching, and 詹前靚. "1.Synthesis of CuO incorporated on mesoporous silicas and their application for C-O coupling reaction2.The influence of copper reagents on C-S coupling reaction." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/r2w556.

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33

Matidza, Murendeni. "Green synthesis of geopolymeric materials using Musina Copper Mine Tailings: a case of beneficial management of mine tailings." Diss., 2019. http://hdl.handle.net/11602/1467.

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MENVSC<br>Department of Ecology and Resource Management<br>Mine tailings (MT) have been a global problem due to the environmental impacts the waste generates such as air, soil and water pollution. The detrimental impacts include a global problem such as acid mine drainage (AMD) which has been difficult to cleanup. Several studies have been conducted to find alternative measures in reducing or mitigating impacts such as AMD and air pollution. Several studies have revealed how alumino-silicate mineral waste can be used as raw material to produce construction materials. This study aimed at e

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