Articles tagged with Copper
Researchers have identified evidence of tropical cyclone impacts on Earth's surface, while new modeling reveals the optimal structural context for giant porphyry copper deposits. The study utilizes apatite fission-track thermochronology to constrain the episodic cooling and exhumation history of the Catskill Mountains in New York State.
Researchers at University of Utah Health found hormonal IUDs comparable to copper IUDs for emergency contraception, offering a safe alternative to current options. The study also suggests that hormonal IUDs can provide highly effective contraception for up to seven years, reducing the risk of pregnancy after unprotected intercourse.
Researchers have developed a prototype of an anode-free zinc-based battery that uses low-cost, naturally abundant materials. The battery shows high efficiency, energy density and stability, opening new directions for using aqueous zinc-based batteries in energy storage systems.
Researchers at the University of Illinois have developed a new electrochemical reaction using polymers to improve CO2-to-ethylene conversion efficiency. The study found that the new polymer-entrained electrodes produced more stable chemical intermediates, resulting in up to 87% ethylene production, surpassing previous reports.
Researchers developed a molecule that regulates copper circulation in the brain, extracting trapped copper from amyloid plaques. Administered to Alzheimer's mice, it inhibits memory loss and has shown promise in non-transgenic models closest to human reality.
Researchers at Drexel University have developed ultrathin spray-applied MXene antennas that surpass copper antenna performance in terms of thinness, flexibility, and durability. The new technology has the potential to enable significant advancements in IoT technology and mobile communication networks.
A new material called ZIOS has been designed to capture copper ions from wastewater with unprecedented precision and speed. The material selectively removes copper, a contaminant linked to disease and organ failure, without removing desirable ions or nutrients.
Scientists at University of Tokyo identify genes that give plant nucleus its shape, also regulate copper tolerance. The discovery reveals fundamental knowledge about genome regulation and points towards future methods for manipulating gene expression.
A recent study published in The BMJ found that women who stop using some forms of contraception, such as injectable methods, may experience a temporary delay in their return to fertility. After eight months, most women are able to conceive normally again.
Scientists from Chalmers University of Technology investigate the role of nearest neighbors in nanoparticles' activity. They isolated copper particles and monitored their behavior in a nanotube, finding that oxidation state can be dynamically affected by neighboring particles during reactions.
A chemist from RUDN University has developed a copper catalyst that accelerates the click reaction and enables it to occur at room temperatures without additional bases or solvents. The catalyst allows for the production of triazoles, bioactive substances with antibacterial, neuroleptic, and antispastic properties.
Researchers have reengineered current collectors to make batteries lighter, safer, and about 20% more efficient. The new design uses a lightweight polymer and fireproofing, reducing the risk of fires and explosions.
Cornell engineers developed a modular process for designing elastomers with metals like iron and calcium, creating a wide range of mechanical properties. The framework allows for the creation of biodegradable and elastic materials for soft tissue reconstruction and regeneration.
A new bio-based catalyst, copper stearate, has been shown to efficiently inhibit gas hydrate formation and facilitate in-situ oil combustion. The compound's high performance in low-temperature conditions makes it a promising solution for the petroleum industry.
Scientists at Oak Ridge National Laboratory created a composite material that increases electrical current capacity of copper wires, enabling more efficient electric vehicle traction motors. The new material can be scaled for use in ultra-efficient devices with improved performance and reduced cost.
Researchers at Tokyo Institute of Technology have developed a highly efficient blue-emitting semiconductor material Cs5Cu3Cl6I2, which can produce white light while reducing energy consumption. The new material has unique properties that make it more stable and eco-friendly than existing alternatives.
Dye-sensitised solar cells can perform more consistently in low-light conditions thanks to improved understanding of electrolyte additives. Researchers have found that certain molecules, such as 4-tert-butylpyridine and 1-methyl-benzimidazole, are crucial to suppressing recombination losses and maximizing efficiency.
A research team at Cornell University created nanoclusters that can self-assemble and mimic the complex structures of DNA, RNA, and proteins. The clusters have three levels of organization with an interlocking, chiral design, making them potential candidates for metabolic and enzymatic processes.
A Brown University team has created a copper catalyst that can produce C2-plus compounds from CO2 with remarkable efficiency, surpassing other reported efficiencies. The catalyst's high selectivity is attributed to surface defects, which are crucial for carbon-carbon coupling reactions.
Researchers develop microrecycling strategy to convert e-waste into a strong, protective coating for metal. The new material combines copper and silica compounds to form a durable hybrid layer that increases steel hardness by 125%.
Scientists at Lawrence Berkeley National Laboratory found that copper catalysts are superior to purely metallic-origin catalysts in producing ethylene after oxygen is depleted. The team developed a method to 'reactivate' the catalyst by re-adding and re-removing oxygen, improving efficiency.
Researchers found similarities in dietary patterns between noble families and commoners, despite social differences. They also identified specific trace elements that revealed a person's diet and exposure to certain metals.
A new platform technology can assess water safety and quality with just a single drop and minutes. The platform tests for 17 different contaminants, including toxic metals, pharmaceuticals, and cosmetics, providing fast and easy results.
Histones may have evolved to adapt to oxygenated environments by reducing toxic copper, a crucial element for biological processes. The study reveals a new function of the histone H3-H4 tetramer as an oxidoreductase enzyme, making harmful copper oxidation state safe for use inside cells.
Researchers identified a new function for histones, enabling the transfer of electrons from one molecule to another, converting copper into a usable form for cells. This discovery refutes earlier theories and suggests histones played a crucial role in the evolution of eukaryotes, including humans, around 2 billion years ago.
Researchers summarize the processes involved in forming porphyry copper deposits, including dehydration, magma ascent, assimilation, storage, and homogenization. The study highlights ongoing challenges, such as tectonic control on geochemical characteristics and metal pre-enrichment mechanisms.
Researchers at Cornell University used single-molecule tracking and protein quantitation to study the mechanism of bacteria's resistance to toxic metals, revealing a complex series of steps that lead to detoxification. The discovery could lead to the development of more effective antibacterial treatments.
Researchers discovered that copper ions are primarily bound to ceruloplasmin and serum albumin in the blood, with implications for diagnosing and treating Alzheimer's disease. The study's findings provide new insights into normal copper metabolism and its disturbances in genetic diseases.
Researchers have discovered heteroligand complexes of copper with malonic or adipic acid dihydrazides and L-histidine, showcasing trans-influence. The study suggests that these complexes can serve as models for biological systems and potentially be used to enhance the biologically active properties of organic substances.
Researchers at QIBEBT discovered a copper ion that overcomes discharge product build-up issues in magnesium batteries. The Mg/Cu+ battery retained 80% of its capacity after 200 cycles, outperforming traditional lithium-ion batteries.
Menkes disease is a rare genetic disorder caused by a copper deficiency, leading to severe brain damage and neuromuscular deficits. Researchers from Texas A¼M have found promising results using the cancer drug elesclomol to deliver copper to tissues and restore energy production.
A yellowish solid compound has been found to emit an intense green glow when excited by an electric current, making it a hot candidate for producing OLEDs. The substance's chemical structure allows for high light yields due to its stiff molecule and minimal changes in structure upon excitation.
A study by Professor Johannes Knobloch found that European coins made from antimicrobial metals like copper display detectable antimicrobial activity against bacteria, reducing bacterial cell counts by up to 99.5% after 24 hours. However, coins may still act as vectors for the transmission of microbes.
Understanding interactions between metal ions and peptides may lead to improved treatments for diabetes, Alzheimer's, and other diseases. Researchers found that copper can impede the aggregation of pramlintide, but not rat amylin.
Researchers at Purdue University have developed a technique that uses laser-texturing to create nanoscale patterns on metal surfaces, instantly killing bacteria and viruses. The technology has potential applications in medical devices such as orthopedic implants and wearable patches for chronic wounds.
Spanish invaders depended on Mesoamerican copper smelting technology to produce bronze artillery pieces. Indigenous experts shared their knowledge with European colonizers, allowing them to smelt copper and create essential armaments.
Researchers found that copper hydroxychloride improves pigs' ability to utilize fat after absorption, leading to increased energy utilization. The element enhances lipid metabolism in the liver, adipose tissue, and muscle, enabling better feed conversion rates and economic savings.
A new study analyzes human bones from medieval cemeteries to shed light on ancient copper cookware. Researchers found that people consumed tiny portions of copper daily, with cities like Ribe using copper pots for 1000 years.
Researchers at Chalmers University of Technology identified Atox1 as a copper-binding protein that facilitates breast cancer cell migration. High Atox1 levels in tumours are linked to lower survival times, suggesting it may be a biomarker for disease aggressiveness.
A Columbia study published in Obstetrics & Gynecology found that patients using copper intrauterine devices (Cu IUDs) had a lower risk of high-grade cervical neoplasms compared to those using levonorgestrel-releasing intrauterine systems (LNG-IUS). The study analyzed data from over 10,000 patients and found the diagnosis rate of high-g...
Scientists at Rice University successfully grew atom-thick sheets of hexagonal boron nitride, a wide band gap semiconductor, to create perfectly ordered crystals for use in integrated circuits. The breakthrough enables the development of 2D layers with millions of transistors, potentially overcoming limitations in miniaturization.
Researchers have discovered a neuron-like electrical switching mechanism in solid-state material β'-CuxV2O5, enabling the creation of circuitry that functions like the human brain. The team's findings showcase the potential for neuromorphic computing to improve energy efficiency and address global computing demands.
Researchers developed a small molecule that can modify the coordination sphere of copper bound to amyloid-β, inhibiting its aggregation and toxicity. The study offers insights into chemically modifying neurotoxicity in Alzheimer's disease.
A new study by Chung-Ang University researchers reveals that graphene forms a hybrid layer with copper oxide, significantly slowing down corrosion. After an initial period, graphene appears to increase copper corrosion rates, but a longer-term hybrid structure becomes protective over 1 year.
Researchers created a stress-detecting polymer by incorporating copper complexes into polybutylacrylate, shining brighter when stretched. The copper complexes emit light at greater intensity, enabling the detection of small amounts of stress.
A study published in PLOS ONE reveals that prehistoric Italian communities traded copper across complex networks, with most coming from Tuscany. Non-Tuscan copper was also a significant import to the region, contributing to a growing picture of independent metal exchange networks.
Researchers at EPFL have achieved a record-breaking photoelectrochemical water-splitting efficiency of 4.5% using cuprous oxide (Cu2O) photocathodes with copper thiocyanate (CuSCN) as a transparent and effective hole transport layer, showing improved performance and overcoming limitations such as high cost and electron-hole recombination.
The study found that the depth of porphyry copper and gold deposits influences their composition, with deeper deposits containing more copper and shallower deposits containing more gold. Over 95% of gold is lost to the atmosphere through volcanic emissions, making it challenging for companies to extract this metal.
Scientists from ETH Zurich have successfully created a miniature copper statue of Michelangelo's famous sculpture using 3D printing technology. The technique allows for the creation of metal structures at the nanometer and micrometer scale, enabling the production of complex geometries with high precision.
Researchers from POSTECH have successfully developed a flexible battery with thin and three-dimensional organic electrode, increasing energy density by four times. The new technology uses a three-dimensional copper collector to lower the weight of a battery by 10 times more than conventional copper collectors.
Research suggests that southern Arizona was a high-elevation plateau with elevations over 10,000 feet, similar to Tibet, due to its thick Earth's crust. The study provides insight into mountain formation and distribution of natural resources like copper.
A Cornell-led study found that high copper concentrations in sediment increase disease recovery time for sea fans in Puerto Rico. Elevated copper levels stress corals' immune response, making them more susceptible to infection.
A new study found that copper hospital beds in ICUs harbor 95% fewer bacteria than traditional beds, maintaining low-risk levels throughout patient stays. This could lead to improved patient outcomes, lives saved, and healthcare cost savings.
University of Queensland scientists have identified a new reference material and used a state-of-the-art instrument to better date rock formations in central Asia. This new method could help establish the relationship between historical episodes of magma activity and mineral accumulation.
The study investigates the effect of different stearates on in-situ combustion process, revealing copper stearate as a highly effective catalyst. Copper stearate significantly shifted onset and peak temperatures into lower temperatures, showcasing its potential in catalyzing crude oil combustion.
Researchers develop copper telluride nanoparticles that mimic enzymes, inducing oxidative stress and triggering inflammatory processes in tumor cells. This triggers an immune response, allowing the body to defend against metastasis and relapses.
Scientists developed a machine-learning approach to extract catalytic properties from x-ray signatures of catalysts. This method helps identify the active phase of the catalyst, which converts carbon dioxide to methane, and guides the design of more efficient catalysts.
A recent study reveals that early hunter-gatherers on opposite sides of North America interacted much sooner than previously believed. Analysis of human remains, stone tools, and a copper band found in an ancient burial pit in Georgia suggests direct trade networks between the Great Lakes region and the coastal southeast United States....
Researchers create metal that is 42 percent stronger than previous record while maintaining electrical conductivity. The team's discovery combines nanocrystalline and nanotwinned structures to overcome traditional trade-offs between strength and conductivity.
Copper acetate and copper resinate pigments, used in Renaissance-era art, turned brown over time due to molecular changes triggered by light exposure. Boiling linseed oil before mixing slowed the darkening reaction.