Articles tagged with Manganese
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A University of Delaware-led team studies the biogeochemistry of ocean and coastal waters, focusing on manganese's role in marine ecosystems. The research aims to understand how manganese transitions between states and its impact on biological growth of marine organisms.
A team of researchers at PNNL has made an unexpected discovery in rechargeable batteries, leading to a more efficient and environmentally friendly alternative for storing renewable energy. The new battery, which uses zinc-manganese oxide materials, can store energy with higher density and lower cost than conventional car batteries.
Researchers have discovered that a specific type of bread mold, Neurospora crassa, can transform manganese into a mineral composite with favorable electrochemical properties. This process has the potential to create more sustainable electrochemical materials for use in rechargeable batteries.
Researchers from Spain and Italy have identified the source of ancient Roman marble using microscopic and geochemical techniques. The study found that the marble came from quarries in Turkey and Greece, with variations in crystal size, manganese content, and isotopes providing key clues.
Researchers at the University of Illinois have developed a manganese-based catalyst that combines high reactivity and selectivity, enabling chemists to install nitrogen into carbon-hydrogen bonds with greater ease. This breakthrough has the potential to accelerate drug discovery and development, reducing costs and increasing efficiency.
The Hong Kong Polytechnic University has developed a novel eco-friendly manganese dioxide ink for energy storage devices, which exhibits high capacity and power density. The MnO2 ink can be used to produce light, thin, flexible energy storage devices with improved performance and lower production cost.
Researchers developed a new spectroscopy method, 2D HYSCORE, to capture the solar water-splitting reaction at the heart of photosynthesis. The study successfully resolved the active site geometry of manganese catalase, a simpler metal-containing protein, and gained insight into the mechanism of photosynthesis.
Researchers discovered that Candida albicans, a deadly fungus, uses copper to fuel an enzyme designed to neutralize free radical attacks, but can switch to manganese when copper levels drop. This clever adaptation allows the fungus to survive in tissues like the kidney.
A team of scientists has discovered a new magnetic phenomenon by growing perfectly-crystalline atomic layers of a manganite on a nonmagnetic substrate. The discovery shows that adding just one extra layer can transform the magnetism, validating the polar catastrophe model.
A study by Washington University in St. Louis found that low levels of manganese increased dopamine levels in honey bee brains, speeding up their behavior, while high doses caused toxicity. The findings suggest that honey bees may serve as early warning indicators for environmental toxins.
Researchers have created an efficient manganese catalyst capable of converting sunlight into chemical energy. The breakthrough, published in the Journal of Materials Chemistry A, paves the way for a continuous and environmentally-friendly storage form of solar energy.
Physicists at the University of Groningen have discovered a new manganese compound produced by tension in the crystal structure of terbium manganese oxide. The discovery could lead to the creation of new nanoscale circuits.
ORNL researchers directly observed single dopant atoms moving inside a bulk material for the first time, contradicting theoretical predictions. The study provides unprecedented insight into the properties and lifespan of new materials, particularly in energy-saving LED lights.
Researchers at Virginia Tech find that 50% of the population can't detect high levels of manganese in water, leading to potential health risks. The study's findings highlight the importance of considering water safety not only in tap water but also in humidified air.
Researchers from RIKEN have discovered a mineral-based catalyst that efficiently splits water into oxygen and hydrogen ions at neutral pH. The key to this success lies in synchronizing electron- and proton-transfer timing, which greatly improves the catalytic activity of manganese oxides.
Analysis reveals unusual sodium absorption pattern in the crystal, caused by different charges and magnetic moments of manganese atoms. The discovery provides a basis for tailoring the properties of these materials, potentially leading to improved battery performance.
Researchers developed a self-defending surface that releases hot foam to deter attackers, protecting cash boxes in ATMs. The film is made of plastic layers filled with chemicals that mix when damaged, producing a violent reaction.
Researchers at Virginia Commonwealth University and MIT have identified a key enzyme necessary for a disease-causing bacterium to survive, which may lead to the development of new antibiotics. The study found that eliminating this enzyme or its manganese-attachment protein prevents the bacterium from causing heart valve disease.
Researchers at the University of Adelaide and The University of Queensland discovered that zinc 'jams shut' a protein transporter in deadly bacteria, preventing manganese uptake. This finding opens the way for designing antibacterial agents to target essential transporters.
Researchers discover manganese(III) forms up to 90% of total manganese present in marine environments with gradation of oxygen concentrations. The finding sheds light on the complex connections between biology, geology and chemistry in ocean environments.
Researchers developed a powerful micro-supercapacitor, just nanometres thick, that can store more energy and provide more power per unit volume than state-of-the-art supercapacitors. The device has potential applications in miniaturized technologies, including implantable medical devices and RFID tags.
Researchers found evidence of an early manganese-oxidizing photosystem in ancient South African marine sedimentary rocks, which predates the evolution of oxygenic cyanobacteria. This discovery supports the idea that manganese oxidation provided a stepping-stone for water-oxidizing photosynthesis.
A new study suggests that scientists can create a stable structure with manganese and gallium nitride, which could be used in spintronics devices at or above room temperature. By incorporating a uniform layer and heating the sample, researchers were able to form a manganese-nitrogen bond that remains stable even at high temperatures.
Researchers at Michigan Technological University have developed a method to create manganese dioxide nanorods with the optimal crystal structure, enabling high-power and long-lasting capacitors. The nanorods can be used in various applications, including energy storage and solar cells.
Vanderbilt investigators have identified the structural features of calprotectin's two metal binding sites and demonstrated that manganese binding is key to its antibacterial action. The study could guide efforts to develop novel antibacterials that limit a microbe's access to metals.
University of California researchers use hard X-ray angle-resolved photoemission spectroscopy to study gallium manganese arsenide, a material with potential in spintronics. The study reveals fundamental understanding of electronic interactions, suggesting future materials development.
Researchers used HARPES to investigate the bulk electronic structure of GaMnAs, finding evidence that two prevailing mechanisms co-exist to give rise to ferromagnetism. This breakthrough provides a better fundamental understanding of electronic interactions in dilute magnetic semiconductors.
Harvard researchers found that a fungus produces superoxide, which oxidizes manganese, forming reactive minerals used for water cleanup and nutrient control. The discovery lends insight to environmental remediation and raises questions about the role of fungi in biogeochemistry.
A recent study found that manganese concentrations in airborne particulate matter are higher in residential neighborhoods near industrial sites than in the surrounding areas. The study, conducted across five US counties, suggests that manganese toxicity varies significantly by geographic location.
Researchers at Berkeley Lab and Notre Dame have determined the origin of charge-carriers in gallium manganese arsenide, a material promising for spintronic devices. The study reveals that holes controlling Curie temperature are located in an impurity band, opening possibilities to expand its width and boost performance.
Researchers at Carnegie Mellon University have discovered that manganese completely protects against Shiga toxicosis in animal models. The findings suggest that manganese could be a promising treatment for neutralizing the effects of Shiga toxin in humans, offering an affordable solution to this deadly infection.
Researchers propose that manganese is essential for calcium absorption and its depletion may lead to osteoporosis. The study suggests a link between manganese deficiency and conditions like Alzheimer's and Parkinson's disease, highlighting the importance of maintaining bone health in relation to brain function.
The University of Cincinnati has developed a lab-on-a-chip sensor that can detect highly electronegative heavy metals like manganese in human blood serum in just ten minutes. This sensor is environmentally friendly and child-friendly, making it an attractive option for clinical, occupational, and research settings.
A team of researchers has uncovered a startling new feature of lanthanum strontium manganese oxide, which can change its stripes from fluctuating to static and back. At the right temperature, it switches from a metallic state to an insulator, exhibiting colossal conductivity changes.
Researchers propose that quantum dots with opposing spin electrons can create a peculiar form of magnetism. This phenomenon occurs due to the 'tug-of-war' between the mobile electrons and the manganese atoms in the quantum dot. The resulting magnetic message can align spins, causing the quantum dot to be magnetic.
Researchers at DOE's Pacific Northwest National Laboratory developed a new method to make sodium ion-based battery cells, which could lead to better, cheaper batteries for the electrical grid. The team found that treating manganese oxide with heat improved the electrical capacity and recharging lifetime of the batteries.
Researchers found that welders had an average 11.7 percent reduction in dopamine markers in the brain compared to non-welders, suggesting potential neurotoxic effects from manganese exposure. The study also revealed brain changes consistent with manganese deposits, highlighting a potential public health concern for U.S. workers.
A study published in Neurology found that welders exposed to welding fumes had an average 11.7% reduction in dopamine levels in the brain, indicating potential neurotoxic effects. The researchers also discovered brain changes consistent with manganese deposits in welders.
Researchers found elevated manganese levels in 20 of 21 soil samples from a ridge at Shale Hills Critical Zone Observatory, with 53% attributed to atmospheric deposition from industrial sources. The excess manganese can be toxic to trees and other vegetation, highlighting the legacy of past iron furnaces.
Physicists at Ohio State University have developed a technique to tune the properties of key atoms in computer chips by rearranging tiny defects. This could lead to faster computing speeds and new computing paradigms based on quantum mechanics.
A study of 362 Quebec children found significant deficits in the intelligence quotient (IQ) of those exposed to higher concentrations of manganese in drinking water. Despite being below current guidelines, the results indicate that manganese may pose a risk to children's intellectual development.
Researchers at PNNL developed a simple one-step method to create high-capacity lithium manganese phosphate electrodes using paraffin wax and soap. The new process enables the exploration of cheaper alternatives to current lithium-ion-metal oxide batteries, with potential applications in electric vehicles and consumer electronics.
Researchers observe complex electron patterns resembling fractals in a gallium arsenide semiconductor, revealing the transition point where it becomes magnetic. The findings suggest that magnetism arises from localized interactions within these fractal puddles.
Astronomers using NASA's Suzaku orbiting X-ray observatory have discovered the largest known reservoir of rare metals in the universe, including chromium and manganese. The metallic atoms were detected in the hot gas between galaxies, providing insights into the chemical history of stars and galaxies.
Researchers at NIST and Naval Research Laboratory create a technique to selectively implant atoms in crystals, enabling study of electrical and magnetic properties on an atomic scale. This development is crucial for spintronics, electronic devices that utilize electron spin instead of charge for storing information.
Chemists at Oregon State University have discovered a new blue pigment based on manganese that is safer to produce, more durable, and environmentally friendly. The compound can survive extreme temperatures and resist acid, making it suitable for various applications such as art, inkjet printers, and automobiles.
Researchers have developed a technique to distinguish between farmed and wild salmon by analyzing the chemistry of their scales, which grows like tree rings and preserves a record of the water they lived in. The new method achieved 98% accuracy and has the potential to identify farms responsible for releasing wild fish into rivers.
Researchers found groundwater manganese positively associated with total cancer, colon cancer, and lung cancer death rates, while airborne manganese concentrations inversely associated with these cancers. Manganese exposure may worsen cancer rates due to increasing environmental levels.
Researchers found that certain microorganisms can convert methane to carbon dioxide using iron and manganese oxides as electron acceptors. This process is crucial for the Earth's carbon cycle and may have played a significant role in reducing methane levels on early Earth.
Researchers at Virginia Commonwealth University discovered a stable cluster of atoms that can mimic different elements of the periodic table, exhibiting strong magnetic properties. The discovery has potential applications in creating faster computers, larger memory storage, and molecular electronic devices.
A species of bacteria, Brachybacterium sp Mn32, has been found to effectively remove manganese and absorb zinc and nickel from solutions. The bacterium's manganese oxides have a greater surface area, enabling more metal ions to be absorbed, making it a promising candidate for bioremediation and cleaning up heavy metal pollution.
The collaboration aims to better understand the industry's needs and ensure expertise and capabilities are used effectively. BHP Billiton plans to relocate 15 researchers to the Queensland Centre for Advanced Technologies from July 2009.
Researchers have identified a manganese protein essential for Lyme disease bacteria to become virulent. The study found that manganese is crucial for the bacterium's growth and survival, raising questions about its role in pathogenicity.
A Penn study found a genetic link between Parkinson's disease genes and manganese poisoning, with the PARK9 protein protecting cells from toxic effects. Manganese poisoning is an environmental risk factor for a Parkinson's-like syndrome.
Scientists at Newcastle University have discovered a mechanism that ensures the correct metal binds to proteins, which has potential applications in synthetic biology and treating diseases such as Alzheimer's. The research found that protein folding location determines metal binding, revealing new insights into protein-metal interactions.
Researchers used computational modeling to demonstrate how manganese oxide changes from an insulator to a conductor under high pressure. The study sheds light on the behavior of similar minerals deep in the Earth's crust and mantle.
Research reveals elevated manganese levels in scrapie-infected sheep's blood before clinical symptoms appear, hinting at a new diagnostic approach. Scrapie-resistant sheep also show increased manganese levels when challenged with the disease.
Researchers at the Max Planck Institute have determined the structure of photosystem II, a crucial step in photosynthesis. The discovery reveals the precise arrangement of manganese and oxygen atoms, which could lead to the development of artificial catalysts for regenerative hydrogen production.
Researchers discovered that a dissolved form of manganese can keep toxic hydrogen sulfide zones in check by reacting with oxygen and hydrogen sulfide. This finding alters the understanding of manganese aqueous geochemistry and has implications for waterways like the Black Sea and Chesapeake Bay.
A new electrode material has been developed that improves battery power and charge retention. The material, which combines nickel, cobalt, and manganese ions at regular intervals, allows for high rates of discharge and energy storage.