Design of DC Motor Using Local Materials. by Ndyamuhaki, Bruce

“…This project explores the design and construction of a DC motor using unconventional materials, including wood, magnets, copper wires, and plastic tubes. The motor's performance and efficiency are evaluated and the results demonstrate a functional DC motor with efficiency within the expected range for do-it-yourself DC motors. …”
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Fuel starvation in automotive PEMFC stacks: stack current and bipolar plate resistance by Jens Nissen, Jan-Peter Boye, Max Schrievers, Jan Nicolas Schwämmlein, Markus Hölzle

“…The other stack used a modified BP which contained a copper-inlay, resulting in low electric sheet resistance. …”
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Syntheses, structures and anticancer activities of CuII and ZnII complexes containing 1,1′-[(3-fluorophenyl)methylene]bis[3-(3-fluorophenyl)imidazo[1,5-a]pyridine] by Hai Le Thi Hong, Hau Nguyen Van, Duong Hoang Tuan, Hung Tran Quang, Tuan Dang Thanh, Luc Van Meervelt

“…Two novel complexes, [Cu(T4)Cl2] and [Zn(T4)Cl2], were synthesized from 1,1′-[(3-fluorophenyl)methylene]bis[3-(3-fluorophenyl)imidazo[1,5-a]pyridine] (T4), and copper(II) and zinc(II) chloride, respectively. The structures of these complexes were confirmed using ESI-MS, IR and 1H NMR spectra. …”
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Impact of trace mineral supplementation and translucency score on eggshell quality, hatchability, fertility, and chick quality by Cassidy A. Morris, Duarte Neves, Michael Carroll, Jonathan Moon, Leticia Orellana, Raquel Burin, Colwayne Morris, Austin Jasek, Kenneth S. Macklin

“…To evaluate this, zinc, manganese, and copper were added into the water of commercial broiler breeder houses at the levels of 40, 40, and 7 ppm, respectively, for 10 wk. …”
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Sources analysis and risk assessment of heavy metals in soil in a polymetallic mining area in southeastern Hubei based on Monte Carlo simulation by Jing Wang, Bo Wang, Qibin Zhao, Jinnan Cao, Xiao Xiao, Di Zhao, Zhenya Chen, Di Wu

“…The main findings are as follows: (1) Among the heavy metals present in the soil, copper (Cu) has the highest average concentration at 278.54 mg/kg, followed by zinc (Zn) at 161.16 mg/kg, chromium (Cr) at 75.23 mg/kg, nickel (Ni) at 30.38 mg/kg, arsenic (As) at 22.53 mg/kg, cadmium (Cd) at 0.76 mg/kg, and mercury (Hg) at 0.14 mg/kg; (2) The distribution of heavy metal concentrations exhibits significant regional variations, with the spatial pattern of pollution indicating that TLS is more affected than JLS, as evidenced by the Pollution Load Index (PLI) values; (3) Three potential sources of heavy metals were identified: natural sources, anthropogenic activities (including industrial production and agricultural practices), and atmospheric deposition (both dry and wet); (4) While severe contamination levels of specific metals such as copper and cadmium are observed in JLS and TLS soils, the overall contamination is mild, suggesting complex contamination dynamics; (5) Cadmium poses a moderate to high ecological risk, being the most sensitive factor in the comprehensive ecological risk assessment with a contribution rate of 65.2 %; (6) The concentrations of heavy metals in the soil present certain health risks, with children being more vulnerable than adults. …”
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Study for the Influence of Mineral Admixtures on the Workability of Self-compacting Concrete by WANG Kunyun, HU Diyong, YANG Zhu

“…As the most important performance of self-compacting concrete (SCC),the workability has been studied extensively and deeply.In addition to high sand ratio and low water-cement ratio,mineral admixtures also have a great impact on the workability of SCC.In order to promote the use and development of SCC,after consulting a large number of domestic and foreign documents,this paper summarizes the use and research status of mineral admixtures in SCC in recent years,reviews the influence of different mineral admixtures on the workability of SCC,and specifies their mechanism.Generally speaking,common admixtures such as fly ash,slag,silica fume and limestone powder can improve part of the workability of SCC,and the main mechanism includes the “morphological effect”,“water reducing effect” and “volume effect” of these admixtures.However,there are few studies on the effects of mineral admixtures such as copper slag,waste glass slag,bagasse ash,pumice powder and lithium slag on the workability of SCC,so they are still in doubt,and need to be further studied.…”
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Melting of Nanoprticle-Enhanced Phase Change Material inside Shell and Tube Heat Exchanger by Seiyed Mohammad Javad Hosseini, Ali Akbar Ranjbar, Kourosh Sedighi, Masoumeh Rahimi

“…This paper presents a numerical study of melting of Nanoprticle-Enhanced phase change material (NEPCM) inside a shell and tube heat exchanger using RT50 and copper particles as base material and nanoparticle, respectively. …”
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A Review of Metal Exposure and Its Effects on Bone Health by Juliana Rodríguez, Patricia Mónica Mandalunis

“…The present review focuses on the most common metals found in contaminated areas (cadmium, zinc, copper, nickel, mercury, chromium, lead, aluminum, titanium, and iron, as well as metalloid arsenic) and their effects on bone tissue. …”
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A New Cross-Shaped Graphite Furnace with Ballast Body for Reduction of Interferences in Atomic Absorption Spectrometry by A. A. Asweisi, H. M. Kuss

“…Analysis of middle volatile element such as copper and manganese in standard urine sample (seronorm 2525) showed complete separation of analyte and background signals with good sensitivity and repeatability.…”
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Une trompe romaine (tuba) à Brie-Comte-Robert (Seine-et-Marne) ? by Cyril Driard, Fabien Pilon

“…Two copper alloy objects, nested one into the other, were discovered during an archaelogical preventive excavation. …”
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Toxic Metal Recovery from Waste Printed Circuit Boards: A Review of Advanced Approaches for Sustainable Treatment Methodology by Murugesan Manikkampatti Palanisamy, Venkata Ratnam Myneni, Badhane Gudeta, Srikanth Komarabathina

“…Waste printed circuit boards (PCBs) include a number of hazardous heavy metals, including copper (Cu), tin (Sn), lead (Pb), and others (Zn, Ni, Fe, Br, Mn, Mg etc.). …”
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DNA Binding and Cleavage Activity of Binuclear Metal Complexes with Benzil-α-Monoxime Thiosemicarbzone by M. S. Surendra Babu, T. B. Patrudu, K. Hussain Reddy

“…Transition metal complexes of copper(II), nickel(II), cobalt(II) and iron(II) with benzil-α-monoxime thiosemicarbazone (BMOT) have been synthesized and characterized by molar conductance, magnetic moments, IR, electronic and ESR spectroscopy. …”
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Metal Contents in Water, Sediment, and Oligochaeta-Chironomidae of Lake Uluabat, a Ramsar Site of Turkey* by Naime Arslan, Burcu Koç, Arzu Çiçek

“…Samples of lake water and sediment, and sediment and two dominant zoobenthic taxa (Oligochaeta: Potamothrix hammoniensis and Chironomidae: Chironomus [Camptochironomus] tentans larvae), were collected from 12 stations in Lake Uluabat and examined from the metal level point of view (cadmium, chromium, lead, copper, nickel, and zinc). Our results showed that the occurence of metals in water, sediment, and the two zoobenthic taxa are relatively high. …”
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Colonial and Postcolonial Logistics by Giulia Scotto

“…In particular, it focuses on Zambia (Northern Rhodesia at time of British domination), a landlocked country located in the centre of Southern Africa, whose historical evolution, since it was conquered at the beginning of the twentieth century, is deeply intertwined with the discovery, extraction and export of copper and with the import of fossil fuel. In the first part, I introduce the concept of ‘colonial logistics’ intended as the modification and rationalisation of territories for military and political domination, and extraction and export of resources. …”
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RESEARCH OF THE COLD-BEATING GEAR HARDNESS ON THE BASIS OF MICROSTRUCTURE by LI YuXi, LI Yan, CUI LiMu, XIAO JiMing, CHEN YuZhao

“…This article was based on copper,aluminum,steel Q235,for gear cold-beating. …”
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Effect of Micropore Filling on Chemisorption by Large Surface Area Materials. Adsorption of O and NO by CuZnO Catalysts by Chaim Aharoni, Bice Fubini, Elio Giamello

“…The model is applied to the adsorption of oxygen by CuZnO catalysts with various copper contents, and containing particles and interparticle voids of various sizes.…”
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A novel technique to synthesis of tenorite (CuO) nanoparticles from low concentration CuSO4 solution by Darezereshki E., Bakhtiari F.

“…In this study CuO nanoparticles were prepared via direct thermal decomposition method using basic copper sulphates as wet chemically synthesized precursor which was calcined in air at 750°C for 2h. …”
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Potential Damage to Modern Building Materials from 21st Century Air Pollution by Peter Brimblecombe, Carlota M. Grossi

“…The evolution of damage to building materials has been estimated for the 21st century, with a particular focus on aluminum, zinc, copper, plastic, paint, and rubber in urban areas. …”
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Change of the structure of the surface of galvanic coatings under exposure to cold air plasma by A. G. Anisovich, I. I. Filatova, S. V. Goncharik, V. F. Gologan, Zh. I. Bobanova

“…Methods of metallographic analysis and scanning probe microscopy are used to study changes in the surface of copper electroplating under the influence of cold air plasma. …”
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Hrádok nad Váhom by Filip Ondrkál

“…Through a comprehensive evaluation of tin content analysis results of copper alloy vessels from western Eurasia, the spread of this most advanced contemporary technology could be reconstructed, highlighting the importance of such research in understanding the processes leading to the emergence of the Urnfield power structures and centralised political control over secondary metallurgy (the production of artefacts from already processed raw materials) in Europe in the Bronze Age. …”
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