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Articles de revues sur le sujet « Copper sources »

Auteur : Grafiati

Publié le 7 juin 2025

Mis à jour le 2 août 2025

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1

Boyd, Stefanie D., Morgan S. Ullrich, Amelie Skopp, and Duane D. Winkler. "Copper Sources for Sod1 Activation." Antioxidants 9, no. 6 (2020): 500. http://dx.doi.org/10.3390/antiox9060500.

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Copper ions (i.e., copper) are a critical part of several cellular processes, but tight regulation of copper levels and trafficking are required to keep the cell protected from this highly reactive transition metal. Cu, Zn superoxide dismutase (Sod1) protects the cell from the accumulation of radical oxygen species by way of the redox cycling activity of copper in its catalytic center. Multiple posttranslational modification events, including copper incorporation, are reliant on the copper chaperone for Sod1 (Ccs). The high-affinity copper uptake protein (Ctr1) is the main entry point of coppe

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Rabiansky, P. A., L. R. McDowell, J. Velasquez-Pereira, et al. "Evaluating Copper Lysine and Copper Sulfate Sources for Heifers." Journal of Dairy Science 82, no. 12 (1999): 2642–50. http://dx.doi.org/10.3168/jds.s0022-0302(99)75521-9.

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Cromwell, G. L., M. D. Lindemann, H. J. Monegue, D. D. Hall, and D. E. Orr. "Tribasic copper chloride and copper sulfate as copper sources for weanling pigs." Journal of Animal Science 76, no. 1 (1998): 118. http://dx.doi.org/10.2527/1998.761118x.

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Gale, N. H., Z. A. Stos-Gale, and G. R. Gilmore. "Alloy Types and Copper Sources of Anatolian Copper Alloy Artifacts." Anatolian Studies 35 (December 1985): 143–73. http://dx.doi.org/10.2307/3642880.

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Few will doubt that in the East Mediterranean world and in the Near East the development of metallurgy was an important factor (though certainly not the only one) in the evolution of socio-economic organization in the Late Chalcolithic and especially in the Early and Late Bronze Age. The availability of silver, lead and gold added markedly to the possibilities of the acquisition of prestigious objects by the few, to developments in the concept of wealth and in the development of hierarchical societies. The availability of copper, arsenical copper, and later, tin bronze made possible the produc

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Panagos, Panos, Cristiano Ballabio, Emanuele Lugato, et al. "Potential Sources of Anthropogenic Copper Inputs to European Agricultural Soils." Sustainability 10, no. 7 (2018): 2380. http://dx.doi.org/10.3390/su10072380.

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In the European Union (EU), copper concentration in agricultural soil stems from anthropogenic activities and natural sources (soil and geology). This manuscript reports a statistical comparison of copper concentrations at different levels of administrative units, with a focus on agricultural areas. Anthropogenic sources of diffuse copper contamination include fungicidal treatments, liquid manure (mainly from pigs), sewage sludge, atmospheric deposition, mining activities, local industrial contamination and particles from car brakes. Sales of fungicides in the EU are around 158,000 tonnes annu

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Eremina, Natalya V., Natalia V. Bulina, Mikhail A. Mikhailenko, Olga B. Vinokurova, Igor Y. Prosanov, and Marina V. Chaikina. "Cu-Substituted Hydroxyapatite Powder: Mechanochemical Synthesis Using Different Copper Sources and Thermal Stability." Powders 2, no. 4 (2023): 678–96. http://dx.doi.org/10.3390/powders2040042.

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In this paper, we present results of a study on the possibilities of the mechanochemical synthesis of copper-substituted hydroxyapatite with the replacement of calcium cations by copper cations. During the synthesis, various reagents—sources of copper cations—were used. It was found that the nature of the carrier of the doping cation plays an important role in the formation of the structure of Cu-substituted apatite. It was established that a single-phase material forms most efficiently when copper (II) phosphate is employed; however, even this reagent did not allow the introduction of a large

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Levine, Mary Ann. "Determining geologic sources of artifact copper: Source characterization using trace element patterns." Geoarchaeology 17, no. 6 (2002): 625–27. http://dx.doi.org/10.1002/gea.10033.

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WITTENBERG, K. M., R. J. BOILA, and M. A. SHARIFF. "COMPARISON OF COPPER SULFATE AND COPPER PROTEINATE AS COPPER SOURCES FOR COPPER-DEPLETED STEERS FED HIGH MOLYBDENUM DIETS." Canadian Journal of Animal Science 70, no. 3 (1990): 895–904. http://dx.doi.org/10.4141/cjas90-108.

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Copper (Cu) depleted steers were used to compare copper sulfate and copper proteinate as Cu sources for cattle consuming high molybdenum diets. Two experiments utilizing corn silage and barley concentrate diets with 10 mg added Mo kg−1 DM were undertaken. Experiment A was a 105-d study in which an 83:17 ratio of silage to concentrate was fed, whereas, experiment B was an 84-d study comparing the same Cu treatments for cattle fed a 26:74 (Low) or a 64:36 (High) ratio of silage to concentrate. Cu treatments for both experiments were: no supplemental Cu (0Cu); a dietary supplement of 10 mg Cu kg−

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Tschopp, M. A., and D. L. McDowell. "Grain boundary dislocation sources in nanocrystalline copper." Scripta Materialia 58, no. 4 (2008): 299–302. http://dx.doi.org/10.1016/j.scriptamat.2007.10.010.

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MITA, Mamoru. "Plating Characteristics of Vapor Deposited Copper Film Using High Purity Copper Sources." Journal of the Surface Finishing Society of Japan 48, no. 5 (1997): 539–43. http://dx.doi.org/10.4139/sfj.48.539.

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Kovačević, Renata, Bojan Radović, Dragan Manojlović, et al. "Determining the PM10 Pollution Sources near the Copper Smelter in Bor, Serbia." Atmosphere 15, no. 12 (2024): 1498. https://doi.org/10.3390/atmos15121498.

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The EPA Positive Matrix Factorization (PMF) 5.0 model was applied to determine the sources and characteristics of PM10 collected near the copper smelter in Bor, Serbia, from September 2009 to July 2010. For a better understanding of the industrial sources of PM10 pollution, the dataset was divided into four observation periods: heating season (HS), non-heating season (NHS), copper smelter in work (SW), and copper smelter out of work (SOW). The daily limit for the PM10 fraction of 50 μg/m3 was exceeded on one-sixth of days in the NHS, about half the days in the HS, and about one-third of days d

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Shi, Xiaoshan, and K. Heran Darwin. "Copper homeostasis in Mycobacterium tuberculosis." Metallomics 7, no. 6 (2015): 929–34. http://dx.doi.org/10.1039/c4mt00305e.

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Li, Mengting, Kuanle Bao, Hongsong Wang, et al. "Distribution and Ecological Risk Assessment of Nutrients and Heavy Metals in the Coastal Zone of Yantai, China." Water 16, no. 5 (2024): 760. http://dx.doi.org/10.3390/w16050760.

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As urbanization accelerates, a growing influx of pollutants enters the sea through land runoff, posing a threat to coastal ecosystems. In this study, we systematically determined the concentrations of nutrients and heavy metals in the water and sediments of coastal areas (Yantai, China) and assessed their sources and ecological risks. The results showed that inland rivers transported large amounts of NO3− and PO43− into coast water, which caused severe eutrophication. Regarding heavy metals, copper dominated in seawater, whereas plumbum and arsenic were dominant in sediment, which was sourced

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A, Singh. "Introduction and Sources of Molluscicides." Medicinal & Analytical Chemistry International Journal 8, no. 1 (2024): 1–8. http://dx.doi.org/10.23880/macij-16000195.

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The term "molluscicide" refers to any drug used to control or eradicate soft-bodied invertebrates, such slugs and snails. These chemicals are commonly employed in agriculture, horticulture, and public health programs to manage mollusc populations that can cause damage to crops, transmit diseases, or infest water bodies. Molluscicides can be categorized into chemical and non-chemical methods. Chemical molluscicides include metaldehyde, iron phosphate, copper sulphate, and synthetic molluscicides like carbamates. In most slug pellets intended for crop protection, the active component is metaldeh

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Ward, J. D., and J. W. Spears. "Comparison of Copper Lysine and Copper Sulfate as Copper Sources for Ruminants Using In Vitro Methods." Journal of Dairy Science 76, no. 10 (1993): 2994–98. http://dx.doi.org/10.3168/jds.s0022-0302(93)77638-9.

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Zhou, Xiong, Yu Zhou, and Yi Zhang. "Further Studies of Ore-Forming Fluid Sources of Bangpu Molybdenum-Copper Polymetallic Deposit, Tibet." Advanced Materials Research 746 (August 2013): 473–77. http://dx.doi.org/10.4028/www.scientific.net/amr.746.473.

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Bangpu molybdenum-copper polymetallic deposit is located in the eastern section of the Gangdese Porphyry Copper Belt of Tibet. It is a typical large porphyry molybdenum copper polymetallic deposit. The isotope study of fluid inclusions H and O in the quartz (calcite) of various mineralization stages shows that, the ore-forming fluid comes mainly from meteoric hydrothermal caused by atmospheric precipitation, which has consistency with ore-forming fluid sources of Gangdese Porphyry Copper Belt. The Mo-Cu phase with low δD value (-140.5 ~ -104.0 ) suggests a large-scale magmatic degassing. The a

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Farquhar, R. M., R. G. V. Hancock, and L. A. Pavlish. "Lead isotope ratios in 16th century copperware traded to North America: the Swedish connection." Canadian Journal of Physics 96, no. 4 (2018): 438–44. http://dx.doi.org/10.1139/cjp-2017-0117.

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Isotope analyses have been made on the trace amounts of lead in a small set of late 16th century pure copper trade kettles and kettle debris from Indigenous sites in eastern Canada. The isotope ratios are highly correlated. We interpret these correlations as the mixing of copper from Precambrian Swedish ores with metal from one or more of the Palaeozoic deposits occurring in central Europe and the British Isles. The data enable us to identify samples of pure Swedish copper, metal consisting of mixtures of Swedish and central European – British copper, and with less certainty, samples derived e

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Souza, Camila Prado Cenciani de, Cleide Aparecida de Abreu, José Francisco da Cunha, Geraldo Magela da Costa, and Cristiano Alberto de Andrade. "PHYTOAVAILABILITY OF COPPER IN INDUSTRIAL BY-PRODUCTS AND MINERAL FERTILIZERS." Revista Brasileira de Ciência do Solo 39, no. 2 (2015): 553–62. http://dx.doi.org/10.1590/01000683rbcs20140270.

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Alternative copper (Cu) sources could be used in fertilizer production, although the bioavailability of copper in these materials is unknown. The objective of this study was to evaluate the extractants neutral ammonium citrate (NAC), 2 % citric acid, 1 % acetic acid, 10 % HCl, 10 % H2SO4, buffer solution pH 6.0, DTPA, EDTA, water, and hot water in the quantification of available Cu content in several sources, relating them to the relative agronomic efficiency (RAE) of wheat grown in a clayey Latossolo Vermelho eutrófico (Oxisol) and Neossolo Quartzarênico (Typic Quartzipsamment). Copper was ap

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Wang, Xiaoting, Wugan Luo, Yingdong Yang, Dian Chen, Jing Du, and Xiang Tang. "Preliminary Discussion on the Highly Radiogenic Lead in Unalloyed Copper Artifacts of the Eastern Zhou Dynasty: Starting from the Huili Copper Spearheads." Metals 10, no. 9 (2020): 1252. http://dx.doi.org/10.3390/met10091252.

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The debate about the highly radiogenic lead in Chinese archaeology has never ceased. However, previous studies have mainly focused on high leaded bronzes and lead materials, and with little specific discussion on the unalloyed copper artifacts and the sources of copper materials in China. In this work, a trace of highly radiogenic lead was found in ten copper spearheads unearthed from Huili County, Sichuan Province, southwest China, which inspired our research on this issue. The pXRF results showed that their lead content is extremely low, so the lead isotope ratios can indicate the source of

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Chen, Lung Chien, Xiu Yu Zhang, and Kuan Lin Lee. "The Effect of the Cu Source on Optical Properties of Cu-Doped ZnO Films." Advanced Materials Research 936 (June 2014): 618–23. http://dx.doi.org/10.4028/www.scientific.net/amr.936.618.

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Cu-doped ZnO (CZO) films have been widely discussed due to its potential applications in semiconductor devices, such as gas sensors or solar cells, but few articles were reported to show the effect on properties of CZO films by using different Cu sources. The article demonstrates that CZO films have been prepared by using different Cu source via a simple ultrasonic spray method, in which copper nitrate and copper acetate were used as copper sources. Optical properties of CZO films prepared by copper nitrate and copper acetate were investigated by transmittance and photoluminescence measurement

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Chester, R., and K. J. T. Murphy. "Oceanic sources of copper to the atlantic aerosol." Science of The Total Environment 49 (March 1986): 325–38. http://dx.doi.org/10.1016/0048-9697(86)90247-0.

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Li, Runxian, Yang Wen, Gang Lin, Chengzhen Meng, Pingli He, and Fenglai Wang. "Different Sources of Copper Effect on Intestinal Epithelial Cell: Toxicity, Oxidative Stress, and Metabolism." Metabolites 10, no. 1 (2019): 11. http://dx.doi.org/10.3390/metabo10010011.

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Copper (Cu) is widely used in the swine industry to improve the growth performance of pigs. However, high doses of copper will induce cell damage and toxicity. The aim of this study was to evaluate toxicity, bioavailability, and effects on metabolic processes of varying copper sources using porcine intestinal epithelial cells (IPEC-J2) as a model. The IPEC-J2 were treated with two doses (30 and 120 μM) of CuSO4, Cu Glycine (Cu-Gly), and Cu proteinate (Cu-Pro) for 10 h, respectively. Cell damage and cellular copper metabolism were measured by the changes in cell viability, copper uptake, oxidat

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Artemyev, D. A., M. N. Ankushev, I. S. Stepanov, et al. "The Geochemistry of Unalloyed Copper Metallurgical Group Indicates Copper Ore Sources in the Late Bronze and Early Iron Ages of the Urals." Archaeology, Ethnology & Anthropology of Eurasia 52, no. 2 (2024): 74–83. http://dx.doi.org/10.17746/1563-0110.2024.52.2.074-083.

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Trace elements in copper artifacts from Late Bronze and Early Iron Age sites in the Urals, formerly attributed to the metallurgical group of “chemically pure” copper, were analyzed using the method of laser ablation inductively coupled plasma mass spectrometry. The metal of which artifacts included in this group are made reveals geochemical markers suggesting that “pure” copper actually falls into several subgroups. The PCA analysis of the results identifies 11 clusters corresponding to various sources of copper ores and their mixtures. At least seven principal associations can be linked to co

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Hu, Xiao Jun, Miao Miao He, Yu Shuang Li, Jing Feng, Qing Bian, and Yan An Chen. "Desorption of Copper from Soils Enchanced by Dihydroxysuccinic Acid." Advanced Materials Research 955-959 (June 2014): 21–24. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.21.

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The contamination of copper to the environment is more and more serious.Nowadays,the sources of copper in the soil due to natural and human activity two kinds of sources, the former is derived from the rock and soil background value, while the latter is derived from the industrial “three wastes”. We can use soil washing for extracting contaminants from the contaminated soil and it is a possible remediation method. Natural organic acids seem to be hopeful environmentally friendly for removing toxic metals from soils. Batch soil-washing experiments were conducted to investigate the behavior of c

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Emerson, Thomas E., and Kenneth B. Farnsworth. "Recognizing Copper Tool Assemblages at Middle Woodland Havana Habitation Sites: Observations on Raw Material Sources, Assemblage Content, and Tool Fabrication." Midcontinental Journal of Archaeology 47, no. 3 (2022): 239–75. http://dx.doi.org/10.5406/23274271.47.3.02.

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Abstract During the Hopewell era, no material was so widely spread or employed across the midcontinent as copper. Large deposits of copper artifacts in the Ohio Scioto Hopewell mounds, in what are usually deemed as status and ritual contexts, have colored subsequent interpretations of copper utilization during this period. Subsequent research documented copper's distribution across the midcontinent in Hopewell mortuary practices, while focusing on its significance as a distant import from the western Great Lakes. Until regional Illinois habitation copper-use studies were undertaken, in the 198

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Behlau, Franklin, Jason C. Hong, Jeffrey B. Jones, and James H. Graham. "Evidence for Acquisition of Copper Resistance Genes from Different Sources in Citrus-Associated Xanthomonads." Phytopathology® 103, no. 5 (2013): 409–18. http://dx.doi.org/10.1094/phyto-06-12-0134-r.

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We determined that multiple and independent introductions of copper resistance genes have taken place for strains of Xanthomonas citri subsp. citri from Argentina and strains of X. alfalfae subsp. citrumelonis from Florida. This study compared the partial nucleotide sequences of principal copper resistance genes copL, copA, and copB from X. citri subsp. citri and X. alfalfae subsp. citrumelonis to strains of other Xanthomonas spp. resistant to copper that were isolated from 12 different countries or territories. The survey confirmed that the copLAB gene cluster is present in many species of Xa

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VALENZUELA, ANTONIO SÁNCHEZ, NABIL BENOMAR, HIKMATE ABRIOUEL, MAGDALENA MARTÍNEZ CAÑAMERO, ROSARIO LUCAS LÓPEZ, and ANTONIO GÁLVEZ. "Biocide and Copper Tolerance in Enterococci from Different Sources." Journal of Food Protection 76, no. 10 (2013): 1806–9. http://dx.doi.org/10.4315/0362-028x.jfp-13-124.

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Antimicrobial resistance in enterococci is a matter of concern. A collection of 272 strains (including 107 Enterococcus faecalis and 165 Enterococcus faecium strains) isolated from meat and dairy products, seafood, vegetable foods, wildflowers, animal feces (ewe, goat, horse, mule), and hospitals were tested for sensitivity to biocides of different classes (quaternary ammonium compounds, a bisphenol, and a biguanide) and copper sulfate. Most isolates were inhibited at 25 mg of benzalkonium chloride or cetrimide per liter or at 2.5 mg of hexadecylpyridinium chloride per liter. Few isolates had

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Colin, Carole, and Mookambeswaran A. Vijayalakshmi. "Copper binding studies of lipases from different sources using image binding: Mechanism of free copper and chelated copper." Journal of Molecular Recognition 9, no. 5-6 (1996): 715–21. http://dx.doi.org/10.1002/(sici)1099-1352(199634/12)9:5/6<715::aid-jmr327>3.0.co;2-v.

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Berzina, A. P., V. I. Sotnikov, and M. S. Mel’gunov. "DEEP-SEATED SOURCES OF MAGMATISM OF THE SORSK DEPOSIT." Russian Geology and Geophysics 35, no. 2 (1994): 50–58. https://doi.org/10.2113/rgg.1994.35.2.50.

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The Sorsk essentiaUy molybdenum deposit of copper-molybdenum association is situated in the Uibatsk pluton (East Siberia, Kuznetsk Alatau). The Uibatsk pluton is a derivative of a long-lived and deep-seated source of endogenic activity. It is composed of Uibatsk magmatites of gabbroic, monzonitoid and granite associations (€2–O) hosting stocks and dikes of the Sorsk ore-bearing porphyry complex and post-ore dikes (D). Among the Uibatsk rocks, magmatic series of various tectonic regimes are distinguished: of pre-plate collision, of post-plate collision-uplift, late orogenic and syncollisional.

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Dharmpal, Meet A., and Zalak R. Rathod. "Role of Copper in Environment as a Potential and Challenges." International Journal of Trend in Scientific Research and Development 4, no. 6 (2020): 901–3. https://doi.org/10.5281/zenodo.4383475.

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Copper is a normally mixing component. Present in the world's shell, in seas, lakes and waterways, wellsprings of copper extend from minute follow sums to rich mine stores. Copper is a fundamental component, implying that all plants, fish and creatures need copper to work appropriately. All around the market for copper is one of the biggest of all metals following iron and aluminium. Copper can be delivered into the earth by both characteristic sources and human exercises. Present day life has various applications for copper, extending from coins to colours, and interest for the metal stay

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Jegede, A. V., A. O. Fafiolu, A. O. Oso, D. O. Sodeinde, T. O. Odewale, and O. O. Oduguwa. "Comparative effect of organic and Inorganic Copper Supplemented Diets on Performance and Blood Characteristics of Growing Rabbits." Nigerian Journal of Animal Production 37, no. 2 (2021): 190–98. http://dx.doi.org/10.51791/njap.v37i2.1366.

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The effects of organic and inorganic copper sources on the performance and blood characteristics of growing rabbits over a 10 week period were investigated. Six dietary treatments were formulated such that diets 1, 2 and 3 contained 10, 50, and 100ppm of organic copper (Copper proteinate (Cu Pro)) while diets 4, 5 and 6 contained 10, 50 and 100ppm of inorganic copper (copper sulphate (CuSO4). The final weight and daily weight gain were significantly (P<0.05) higher in rabbits fed organic Cu compared to those fed Cuso, Organic Cu diets resulted in significant (P<0.05) reduction in blood c

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Buse, Juliana, Vanessa Otero, and Maria Melo. "New Insights into Synthetic Copper Greens: The Search for Specific Signatures by Raman and Infrared Spectroscopy for Their Characterization in Medieval Artworks." Heritage 2, no. 2 (2019): 1614–29. http://dx.doi.org/10.3390/heritage2020099.

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A systematic investigation of medieval copper green pigments was carried out based on written sources: 21 manuscripts, dating from 50–70 to 1755 AD, were sourced and 77 recipes were selected, translating into 44 experiments. Reconstructions from medieval recipes were prepared and characterized through a multianalytical approach to disclose the original pigment formulation that is often described as verdigris. Based on the results obtained, we propose three main groups of copper green pigments, group 1, in which only Cu(CH3COO)2·H2O is formed; group 2, where this acetate is found together with

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Artaud-Gillet, M. C., S. Duchemin, R. Odedra, et al. "Evaluation of copper organometallic sources for CuGaSe2 photovoltaic applications." Journal of Crystal Growth 248 (February 2003): 163–68. http://dx.doi.org/10.1016/s0022-0248(02)01826-2.

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Klein, Sabine, Gerhard Peter Brey, Soodabeh Durali-Müller, and Yann Lahaye. "Characterisation of the raw metal sources used for the production of copper and copper-based objects with copper isotopes." Archaeological and Anthropological Sciences 2, no. 1 (2010): 45–56. http://dx.doi.org/10.1007/s12520-010-0027-y.

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Lee, Seungmin, Minsuk Kim, Hyewon Han, and Jongwoo Son. "Dioxazolones as electrophilic amide sources in copper-catalyzed and -mediated transformations." Beilstein Journal of Organic Chemistry 21 (January 22, 2025): 200–216. https://doi.org/10.3762/bjoc.21.12.

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Over the past decade, dioxazolones have been widely used as N-acylamide sources in amidation processes of challenging substrates, typically employing precious transition metals. However, these catalytic systems often present several challenges associated with cost, toxicity, stability, and recyclability. Among the 3d transition metals, copper catalysts have been gaining increasing attention owing to their abundance, cost-effectiveness, and sustainability. Recently, these catalytic systems have been applied to the chemical transformation of dioxazolones, conferring a convenient protocol towards

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Chen, Manman, Lin Qi, Jia-Min Chen, et al. "Synthesis of acyloxyl pyrazolines by copper-mediated aminoacyloxylation of unsaturated ketohydrazones." Organic & Biomolecular Chemistry 16, no. 28 (2018): 5136–43. http://dx.doi.org/10.1039/c8ob01114a.

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An efficient copper-mediated aminoacyloxylation of unsaturated hydrazones has been developed. Copper carboxylates serve as both reaction promoters and carboxylate sources in these easily conducted reactions. This method provides straightforward access to diversely useful acyloxyl pyrazolines.

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Chugaev, Andrey V., Stephen W. Merkel, and Irina E. Zaytseva. "Lead Isotopic Characteristics and Metal Sources for the Jewelry in the Medieval Rural Settlements from the Suzdal Region (Kievan Rus’)." METALLA 25, no. 2 (2021): 101–25. http://dx.doi.org/10.46586/metalla.v25.2019.i2.101-125.

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The article considers the results of the study of lead isotope composition of 38 non-ferrous artifacts discovered at medieval rural sites of the Suzdal Region (Kievan Rus’). The copper-alloy, silver and pewter artifacts were compared with reference data from geographically and temporally diverse medieval artifacts and ore deposits and revealed differing source regions and supply networks within and between metal types. The identification in some cases was difficult due to the conformity of the lead isotopic composition of deposits of some regions. The copper-alloys, represented mostly by cross

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Baitileu, Darkhan Aitzhanuly, and Maksim Nikolaevich Ankushev. "To the question of raw material sources of mining and smelting centers of the Paleometal Epoch in Central Kazakhstan." Genesis: исторические исследования, no. 8 (August 2021): 19–27. http://dx.doi.org/10.25136/2409-868x.2021.8.36343.

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The subject of this research is the copper deposits, copper-ore resource, and sources of alloying raw materials for mining and smelting production of the Paleometal Epoch in Central Kazakhstan, namely within the Kazakhstan mining and smelting region and Zhezkazgan-Ulytau mining and smelting center. The article provides the interim results of comprehensive research of geoarchaeological production facilities in the territory of copper deposits within the Zhezkazgan-Ulytau mining and smelting center, which allow determining the peculiarities of metallogenic complexes that used to be potential obj

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Rosales, Daniel G., Ryan S. Samuel, and Eric M. Weaver. "PSIII-10 Effect of different copper sources on growth performances in nursery pigs." Journal of Animal Science 103, Supplement_1 (2025): 298–99. https://doi.org/10.1093/jas/skaf102.332.

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Abstract Copper plays a significant role in the growth performance of pigs, influencing feed efficiency and nutrient retention. Recent studies indicate that the source and concentration of copper can markedly affect growth metrics such as average daily gain (ADG) and feed conversion ratios. A total of 1,144 newly weaned pigs (initial body weight (BW) 5.9 ± 1.2 kg) were used to evaluate the effects of copper (Cu) supplementation from two tribasic copper chloride (TBCC) sources and one chelated copper (cCu) source on growth performance of nursery pigs. Pigs were blocked by BW and housed 26 pigs

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MITA, Mamoru. "Chemical Etching and Plating Characteristics of Vapor Deposited Copper Film Using High Purity Copper Sources." Journal of the Surface Finishing Society of Japan 48, no. 5 (1997): 533–38. http://dx.doi.org/10.4139/sfj.48.533.

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Lin, Feng, Xiangyan Meng, Shengjie Lu, and Lishun Wu. "One‐Pot Synthesis and Structure Evolution of Copper‐Containing Ethane‐Silica Induced by Copper Sources." ChemistrySelect 4, no. 2 (2019): 737–41. http://dx.doi.org/10.1002/slct.201803703.

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Wang, Zhong Yang, Na He, Yao Jing Wang, and Jing Zhang. "Effects of Copper on Organisms: A Review." Advanced Materials Research 726-731 (August 2013): 340–43. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.340.

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Copper (Cu), a redox active metal, is an essential nutrient for all species studied to date. But excessive amounts of copper in the body or plant can also pose a risk. To better understand the toxicity of Cu to organisms it is necessary to understand the mechanism by which Cu influences biological and chemical processes in the environment. This paper summarizes the properties of physical and chemical of copper, the sources of organisms exposed to copper and the influence of different concentrations of copper on animal and plant, and also summarizes the relevant research progress.

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VASWANI, SHALINI, VINOD KUMAR, DEBASHIS ROY, MUNEENDRA KUMAR, and RAJU KUSHWAHA. "Effect of different sources of copper supplementation on performance, nutrient utilization, blood-biochemicals and plasma mineral status of growing Hariana heifers." Indian Journal of Animal Sciences 88, no. 7 (2018): 812–18. http://dx.doi.org/10.56093/ijans.v88i7.81465.

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Twenty-four, 12-18 months old Hariana heifers were used to determine the effects of organic and inorganic dietary copper (Cu) supplementation on performance, nutrient utilization, blood biochemicals and plasma mineral status. Cu was supplemented (8 mg/kg diet DM) as copper proteinate, copper propionate and copper sulfate (CuSO4. Animals were divided into four treatment groups with 6 animals in each group and were fed basal diet as per NRC (2001) for a period of 120 days. The basal diet contained 8.0 mg of Cu/kg DM. T1 (control) was fed only basal diet with no added copper while in T2: 8 mg/kg

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Wan, Jie-Ping, and Yanfeng Jing. "Recent advances in copper-catalyzed C–H bond amidation." Beilstein Journal of Organic Chemistry 11 (November 17, 2015): 2209–22. http://dx.doi.org/10.3762/bjoc.11.240.

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Copper catalysis has been known as a powerful tool for its ubiquitous application in organic synthesis. One of the fundamental utilities of copper catalysis is in the C–N bond formation by using carbon sources and nitrogen functional groups such as amides. In this review, the recent progress in the amidation reactions employing copper-catalyzed C–H amidation is summarized.

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Tanciongco, Alexandria, Jessie Samaniego, Cris Reven Gibaga, et al. "Assessment of geochemistry and reprocessing capacity of old copper tailings in Province of Benguet, Philippines." Journal of Degraded and Mining Lands Management 12, no. 2 (2025): 7049–61. https://doi.org/10.15243/jdmlm.2025.122.7049.

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With the rising demand for copper driven by technological advancements and the depletion of high-grade resources, there is increasing interest in recycling secondary sources to extract copper and reduce mining tailings. This study examined legacy copper mine tailings from Benguet, Philippines, to assess their reprocessing potential, using historical data and geochemical analysis. The tailings have a loamy sand texture, with measured porosity of 39.2% and a permeability coefficient of 1.0952 x 10-² cm s-1, indicating low porosity and medium permeability. Water infiltration rates vary from 0.37

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Valois, J. J., G. F. Nellis, and J. M. Pfotenhauer. "Characterization of the thermal properties of OFHC copper at cryogenic temperature." IOP Conference Series: Materials Science and Engineering 1301, no. 1 (2024): 012167. http://dx.doi.org/10.1088/1757-899x/1301/1/012167.

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Abstract Advancements in electronics technology that operate at cryogenic temperature require the study of thermal properties of the materials and interfaces used to connect these systems to a source of cooling. A test facility has been developed to investigate thermal properties important to these applications, bulk conductivity and contact resistance, over the temperature range from 4 K to 40 K. Bulk conductivity tests were conducted on OFHC copper sourced from three different commercial vendors to determine the degree of variation between the commercial sources and the level of agreement wi

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McNulty, Brian A., Simon M. Jowitt, and Ivan Belousov. "THE IMPORTANCE OF GEOLOGY IN ASSESSING BY- AND COPRODUCT METAL SUPPLY POTENTIAL; A CASE STUDY OF ANTIMONY, BISMUTH, SELENIUM, AND TELLURIUM WITHIN THE COPPER PRODUCTION STREAM." Economic Geology 117, no. 6 (2022): 1367–85. http://dx.doi.org/10.5382/econgeo.4919.

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Abstract The ongoing global transition to low- and zero-CO2 energy generation and transport will require more raw materials and metals than ever produced before in human history to develop the necessary infrastructure for solar and wind power generation, electric power grid distribution, and electric vehicle componentry, including batteries. In addition to numerous critical elements, this transition will also require increased production of a range of other metals. This includes copper, with increased production of this metal providing the minerals industry with enhanced opportunities to secur

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FRANCO, DANILO, ANTONIO DE GOES, and FERNANDA DIAS PEREIRA. "SOURCES AND CONCENTRATIONS OF CUPRIC FUNGICIDES FOR THE CONTROL OF CITRUS BLACK SPOT1." Revista Caatinga 33, no. 1 (2020): 1–8. http://dx.doi.org/10.1590/1983-21252020v33n101rc.

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ABSTRACT Citrus black spot (CBS) is a severe disease for citriculture in the São Paulo State, Brazil. Part of its management is focused on chemical control using cupric fungicides and strobilurins. The objective of the present work was to evaluate the efficacy of three sources and three concentrations of cupric fungicides (copper hydroxide, copper oxychloride and cuprous oxide). Orange fruits of the Pera cultivar were bagged in the plants and the treatment with cupric fungicide was applied. The fruits were inoculated (by spray) with Phyllosticta citricarpa (1×104 conidia mL-1) after 0, 7, 14,

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George, A., S. Melanson, M. Dehnel, and C. Hoehr. "Investigation of plasma chamber erosion in an RF ion source." Journal of Physics: Conference Series 2743, no. 1 (2024): 012006. http://dx.doi.org/10.1088/1742-6596/2743/1/012006.

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Abstract Filament driven plasma sources are widely used to produce ion beams, but they require frequent maintenance due to the limited filament lifetime. External radio-frequency (RF) coupled ion source offers a filament-free plasma and hence better maintenance. However, one of the issues encountered during the development of a planar external RF-powered ion source at D-Pace was the erosion of its copper plasma chamber and subsequent formation of copper deposits on the Aluminum Nitride (AlN) RF window. The copper deposits on the RF window deteriorate the power coupling between the external ant

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Weinstein, Randy D., Amy S. Fleischer, and Kimberly A. Krug. "Natural Convection and Passive Heat Rejection from Two Heat Sources Maintained at Different Temperatures on a Printed Circuit Board." Journal of Electronic Packaging 126, no. 1 (2004): 14–21. http://dx.doi.org/10.1115/1.1635393.

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Natural convection and passive heat rejection from two independent heat sources maintained at different temperatures (60°C and 100°C above ambient) on single circuit boards (FR4 and copper clad FR4) are experimentally studied. The effect of heat source location on maximum power dissipation is presented for both horizontal and vertical orientations. Heat losses due to radiation, natural convection and board conduction are quantified. As long as the heat sources are more than 2 cm apart, they do not influence each other on the FR4 board. Vertical orientation increases the power dissipation in th

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