27 papers · ranked by Valyu relevance
Giuseppe Genchi, Alessia Catalano, Alessia Carocci, Maria Stefania Sinicropi + 2 more
Copper is a vital micronutrient for animals and plants acting as a crucial cofactor in the synthesis of numerous metabolic enzymes and contributing to mitochondrial respiration, metabolism, oxido-reductive reactions, signal transmission, and oxidative and nitrosative damage. In the cells, copper may exist in the Cu+…
Angelika Edyta Charkiewicz, Tomasz Popławski
Copper (Cu) is a precious metal and one of the three most abundant trace elements in the body (50-120 mg). It is involved in a large number of cellular mechanisms and pathways and is an essential cofactor in the function of cellular enzymes. Both its excess and deficiency may be harmful for many diseases. Even small…
Silvia Baldari, Giuliana Di Rocco, Gabriele Toietta
Copper is an essential microelement that plays an important role in a wide variety of biological processes. Copper concentration has to be finely regulated, as any imbalance in its homeostasis can induce abnormalities. In particular, excess copper plays an important role in the etiopathogenesis of the genetic disease…
Ludmila V. Puchkova, Polina S. Babich, Yulia A. Zatulovskaia, Ekaterina Y. Ilyechova + 1 more
'Ekaterina Y. Ilyechova' 'Francesca Di Sole'] Copper, which can potentially be a highly toxic agent, is an essential nutrient due to its role as a cofactor for cuproenzymes and its participation in signaling pathways. In mammals, the liver is a central organ that controls copper turnover throughout the body, including…
Vinit C. Shanbhag, Samuel Anakpeba-Dinguyella, Nikita Gudekar, Kristyn Conrad + 14 more
Copper (Cu) transporting ATPases represent a highly conserved subclass of P-type ATPases with critical roles in Cu export and metalloenzyme synthesis. Despite their important biological roles and association with a wide range of human diseases, no high-affinity small-molecule inhibitors have been described. Here, we…
Clive Yik-Sham Chung, Jessica M. Posimo, Sumin Lee, Tiffany Tsang + 3 more
Copper is essential for life, and beyond its well-established ability to serve as a tightly-bound, redox-active active site cofactor for enzyme function, emerging data suggest that cellular copper also exists in labile pools, defined as loosely bound to low molecular weight ligands, which can regulate diverse…
Sylvie Elsen, Victor Simon, Ina Attrée
Bacteria use diverse strategies and molecular machinery to maintain copper homeostasis and to cope with its toxic effects. Some genetic elements providing copper resistance are acquired by horizontal gene transfer; however, little is known about how they are controlled and integrated into the central regulatory…
Gregor P. Jose, Subhankar Santra, Saurav Kumar Saha, Swadhin K Mandal + 1 more
In this study, the effect of polymer stabilized copper nanoparticles and ionic copper on the growth, nucleic acid pool, reactive oxygen species generation, cell surface lipopolysaccharide, outer membrane protein profile and cell surface morphology of Escherichia coli were investigated. Copper nanoparticles exhibited a…
Tingru Chang, Inger Odnevall Wallinder, Daniel de la Fuente, Belen Chico + 4 more
'Belen Chico' 'Manuel Morcillo' 'Jean-Marie Welter' 'Christofer Leygraf' 'Yong-Cheng Lin'] The morphology and elemental composition of cross sections of eight historic copper materials have been explored. The materials were taken from copper roofs installed in different middle and northern European environments from…
Paweł Szymański, Tomasz Frączek, Magdalena Markowicz, Elżbieta Mikiciuk-Olasik
'Elżbieta Mikiciuk-Olasik'] Copper is one of the most interesting elements for various biomedical applications. Copper compounds show vast array of biological actions, including anti-inflammatory, anti-proliferative, biocidal and other. It also offers a selection of radioisotopes, suitable for nuclear imaging and…
Authors not listed
Copper metallic films are essential components in semiconductor devices. We study deposition of copper films by a pulsed electron chemical vapor deposition (e-CVD) process using free electrons from a plasma discharge as reducing agents, with copper beta-diketonates, Cu(hfac)2 and Cu(acac)2 as the copper source. The…
Dimitra Spathara, P. Knights, K. Nikolopoulos
Rare-event searches are key to unveiling the constituents of dark matter and to understanding the nature of neutrinos. These endeavors demand detectors with exceptionally low levels of radioactivity, leading to breakthroughs in related techniques. In this context, additive-free electroformed copper has emerged as the…
Luciano A. Abriata
Copper is essential for life but toxic, therefore all organisms control tightly its intracellular abundance. Bacteria have indeed whole operons devoted to copper resistance, with genes that code for efflux pumps, oxidases, etc. Recently, the CopM protein of the CopMRS operon was described as an important element for…
Uma Nudurupati, Terdha Narla, David Punihaole, Yangguang Ou
A facile platform derived from deposition of ethynyl linkers on carbon fiber microelectrodes has been developed for sensitive and selective sensing of Cu(II). This study is the first to demonstrate the successful anodic deposition of ethynyl linkers, specifically 1,4-diethynylbenzene, onto carbon fiber microelectrodes.…
Abiodun Aderibigbe, Funbi Olasupo, Deborah Odubola, Temitope Akintayo
Copper (Cu) is a major target in metal recovery during the recycling of scrap printed circuit boards (PCBs). Herein, we report on the optimization of parameters for the leaching of Cu from scrap PCB pieces by malonic acid and hydrogen peroxide (H2O2). Large PCBs obtained from scrap laptop computers were cut into…
Debashish Sur, Nathan Smith, Elaf A. Anber, Anderson + 7 more
The influence of Sn alloying additions on the aqueous passivation behavior of Cu-Al alloys was revisited and found to function as a new third element effect in acidified 0.1 M N a2SO 4 solution. The role of each element during the process of aqueous passivation was investigated using electrochemical and…
RUI SERRA-MAIA, Joel Varley, Stephen Weitzner, Henry Yu + 4 more
Copper-based nanoparticles are key electrocatalysts for CO2 electrochemical reduction (CO2 ER) to liquid fuels and other value-added products. However, the copper catalyst can undergo rapid electrochemical corrosion, leading to a loss of catalyst material, fluctuations in the reaction conditions and increasing…
Abdullatif Alfutimie, Mouhammad Shadi Khudr, Cristian Baleca, Nasser Alqahtani + 3 more
Adsorption, using chemically modified zeolites, is a common conventional method of mitigating heavy metal pollution. However, the physical modification of zeolites with reducing agents subject to static magnets and biological trappers is yet to be explored. In this laboratorybased work, we partly gel-coated raw ZSM-5…
Lorena Novoa-Aponte, Fernando C. Soncini, José M. Argüello
Two component systems control periplasmic Cu^+^ homeostasis in Gram-negative bacteria. In characterized systems such as Escherichia coli CusRS, upon Cu^+^ binding to the periplasmic sensing domain of CusS, a cytoplasmic phosphotransfer domain phosphorylates the response regulator CusR. This drives the expression of…
Amjad Al-Tarawneh, Haitham Qaralleh, Muhamad O. Al-limoun, Khaled M. Khleifat
Corresponding author: haitham@mutah.edu.jo Abstract: The main object of this investigation was to shed light on the information on the level of Cu uptake by Pseudomonas aeruginosa that has been previously isolated from patients using Gram-negative E. aerogenes ans a Gram-positive Bacillus thuringiensis as a control for…
Nicky Savjani, Vicente Orts Mercadillo, Su Zhao, Lorenzo Fabbri + 7 more
Copper plating of industrial components is common. However, the application of copper to moving parts is limited due to its poor tribological properties. In this study, a novel nickel-flashed, graphene nanoplatelet-reinforced copper matrix coating (referred to as ML(Ni)) on AISI 52100 steel exhibited stable and…
Vishal Mohade, Krishna Kumar, Parasuraman Swaminathan
Thin films have found a wide variety of applications because of the substantial improvement in their properties as compared to bulk metals. Metal oxide thin films are increasingly being used in various fields and are especially important in functional applications. They can be either p- or n-type in nature depending on…
P. Samarasekara, N. G. K. V. M. Premasiri
Sol-gel spin coating technique was employed to synthesize CuO thin films at 1500 rpm, 2200 rpm and 2400 rpm for 30 seconds, and subsequently annealed at 150-550°C for 1 hour. Multilayered CuO thin films were prepared including 3 and 5 layers. These thin films were characterized using XRD, FTIR and polarizing light…
A. Sudha, Aarju Mathew Koshy, Satyesh Kumar Yadav, Parasuraman Swaminathan
'Parasuraman Swaminathan'] Copper oxide thin films are deposited on quartz substrates by DC magnetron sputtering and the effect of deposition temperature on their optoelectronic properties is examined in detail. Scanning Electron Microscopy (SEM), X-ray diffraction (XRD) analysis, Raman spectroscopy, UV-Vis…
Stefanie E. Bogenrieder, Julian Beßner, Albert K. Engstfeld, Timo Jacob
Copper oxides play a crucial role in a wide range of research areas, such as catalysis, photocatalysis, sensing, energy storage, biomedicine, and spintronics. However, further insights into the surface structure and the related magnetic properties of copper oxides are required to improve their performance. Here, we…
F. Biccari, C. Malerba, A. Mittiga
The doping of wide gap semiconductors is an interesting problem both from the scientific and technological point of view. A well known example of this problem is the doping of Cu2O. The only element which has produced an order of magnitude increase in the conductivity of Cu2O bulk samples is chlorine, as previously…
Eaindra Yee, Murphi T. Williams, Ambika Bhagi-Damodaran
Metals enable numerous physiological processes ranging from respiration to nitrogen fixation. However, the role of metals in biology and biocatalysis is not appreciated by the general public. This lack of knowledge around biological metals can lead to misinformation, especially regarding vaccines and health products.…