Articles tagged with Oxidation
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A team of researchers at Tohoku University has uncovered the biological mechanisms of ferroptosis, a type of cell death triggered by iron and lipid peroxidation. The study reveals that lipid peroxides accumulate at the plasma membrane, leading to increased tension and permeability to cations.
Bacteria have been found to produce superoxides under visible light, accelerating the oxidation of manganese ions and contributing to the formation of manganese oxides in the environment. This process is a significant natural source of manganese oxide and has implications for environmental pollution treatment.
Researchers found that mineral-organic carbon preservation slowed down decomposition, allowing atmospheric oxygen levels to increase unhindered. This process enabled complex life forms to evolve and ultimately led to the development of intelligent life on Earth.
A team led by Professor Siegfried Waldvogel has successfully degraded Kraft lignin using a
Researchers developed a new photo-oxidation method to efficiently synthesize pharmaceutical intermediates and polyurethane from perchloroethylene, a common dry cleaning solvent. The method yields high-quality compounds with minimal environmental impact, offering a promising alternative for sustainable chemical recycling.
A new study from the University of Copenhagen suggests that combining proteins and antioxidants in foods like coffee with milk may have an anti-inflammatory effect in humans. The researchers found that immune cells treated with this combination were twice as effective at fighting inflammation as those with only polyphenols.
A new study reveals a significant increase in nocturnal production of nitrate radicals in China, which could exacerbate air pollution and pose a major health threat. The country's 'hot-spot' for nitrate radical production may worsen ozone and fine particulate pollution if emissions are not reduced.
A new study in the Journal of Dairy Science confirms that milk packaging affects taste, with paperboard cartons and plastic bags imparting off-flavors and compounds to milk. Glass containers remain an ideal choice for preserving freshness, while plastic containers provide additional benefits.
A study by Tokyo Institute of Technology mapped how singlet oxygen molecules travel along DNA strands, shedding light on their propagation and oxidation patterns. The research could lead to more efficient and selective photosensitizer agents for targeted photodynamic therapy, a promising cancer treatment.
A team of researchers from Japan has developed a single purely organic neutral molecule with an incomplete oxidation state for the first time. The new molecule exhibits multi-step phase transitions and crossover caused by intra- and intermolecular electronic interactions, leading to unique strongly correlated electron properties.
Researchers at Washington University in St. Louis found that nanoplastics from polystyrene can produce reactive oxygen species when exposed to light, which can harm wildlife and the aquatic ecosystem. The study suggests that smaller particle sizes of nanoplastics may be more reactive and decompose faster under light.
Researchers from Japan Advanced Institute of Science and Technology have developed a sustainable, eco-friendly compound to stabilize high-energy density lithium-ion batteries. The microbially synthesized pyrazine diamine compound significantly improves battery performance, reducing degradation and increasing operating potential.
The study investigates the degradation of carbon fiber-reinforced ultra-high-temperature ceramic matrix composites at temperatures above 2000°C. The results show that the amount of zirconium in the alloy affects the composite's oxidation resistance, and modifying the matrix composition is necessary to prevent degradation.
A study found that higher levels of glutathione in the nucleus accumbens correlate with better performance in motivation tasks. Nutritional interventions targeting GSH levels may improve motivation by modifying behavior and facilitating effortful endurance.
A UC Riverside-led study found that acute THS exposure initiates mechanisms of inflammatory skin disease and elevates urinary biomarkers of oxidative harm. The researchers discovered elevated molecular biomarkers in blood associated with early-stage activation of contact dermatitis, psoriasis, and other skin conditions.
Researchers at Helmholtz-Zentrum Berlin for Materials and Energy are utilizing X-ray absorption spectroscopy to investigate oxygen evolution in electrocatalysis. This study aims to improve the efficiency of green hydrogen production by developing more stable and cost-effective catalysts.
Scientists have made a groundbreaking discovery about the role of 'junk' DNA in neurological disorders such as Motor Neurone Disease and Alzheimer's. The research found that breaks in this type of DNA can lead to oxidative genomic damage, which can accelerate aging and disease progression.
Researchers used the Advanced Photon Source to study asteroid fragments from Ryugu, finding they were made of water and carbon dioxide ice. The analysis suggests the asteroid formed over 4 billion years ago in the outer solar system, with a hydrated interior and dryer surface.
Researchers have identified two new unique molecular trends in fingerprint oils that can help estimate the age of a fingerprint. The presence of epoxides and an increase in medium-length fatty acids were found to be indicative of fingerprint aging.
Researchers at the University of Houston have discovered a way to activate the soleus muscle, which can sustain elevated oxidative metabolism and improve blood glucose regulation for hours. The 'soleus pushup' movement has been shown to increase oxygen consumption and reduce insulin requirements.
Researchers propose a new coupling strategy combining photocatalytic water oxidation and catalytic wet peroxide oxidation to efficiently remove organic pollutants from wastewater. The proposed strategy achieves higher total organic carbon removal rates compared to traditional methods.
Scientists have developed a method to control chemical reactions in a single molecule by applying voltage pulses, resulting in unprecedented selectivity. By fine-tuning the voltage, researchers can interconvert different products formed during the reaction.
Researchers at Texas A&M University developed an AI framework to predict oxidation behavior of high entropy alloys, reducing experimental analysis time from years to minutes. This allows for the discovery of materials suitable for extreme environments, such as gas turbines and heat exchangers.
Researchers at the University of Freiburg have successfully synthesized the cationic low-valent aluminum complex [Al(AlCp*)3]+, which exhibits ambiphilic reactivity. This breakthrough brings us closer to developing catalysts using abundant and earth-abundant metal like aluminum, potentially replacing expensive transition metals.
Researchers discovered that vitamin K acts as an antioxidant, inhibiting ferroptotic cell death and identifying FSP1 as the warfarin-insensitive enzyme responsible. This finding has implications for treating Alzheimer's disease and acute organ injuries.
Leukemia cells exploit metabolic pathways to evade programmed cell death, but researchers identified a weak spot in acute lymphoblastic leukemia that can be targeted with experimental drugs. Inhibiting glutathione metabolism induces ferroptosis, leading to the death of malignant lymphocytes.
Researchers have successfully isolated and characterized rhodium(VII), the third-highest oxidation state of an element, using advanced ion trap technology. This discovery has significant implications for understanding exotic transition metal oxides and potential applications in materials science.
Researchers discovered a mechanism by which plants stabilize protein molecules during folding, even in low-oxygen conditions. The study found that the redox potential of supporting proteins plays a critical role in disulfide bridge formation and protein folding.
A new study reveals that oxidative damage to telomeres can trigger cellular senescence, leading to the development of 'zombie cells'. Researchers found that damage at telomeres disrupts DNA replication and induces stress signaling pathways, contributing to age-related diseases.
Researchers developed a one-step ball milling method to enhance h-BN's solubility and create freestanding thin films. Femtosecond laser processing introduces oxidation, increasing the material's third-order nonlinear optical properties. This enables precise control and operation of light at micro/nano scales for various applications.
Researchers found that suppressing an enzyme called MSRA, which fixes oxidative damage to proteins, sparks the metastatic spread of pancreatic cancer cells. The discovery suggests that similar switches may exist in other cancers and lays the groundwork for redox-based targeted therapies.
Researchers identified DNA damage-inducible transcript 4 (DDIT4) as a critical factor regulated by histone deacetylase 4 (HDAC4) in skin aging. Overexpression of HDAC4 rescued cells from senescence, while DDIT4 overexpression reversed changes associated with aging.
A new joint study by Southwest Research Institute and Sandia National Laboratories examines the effects of supercritical carbon dioxide (sCO2) on oxide film growth on additively manufactured metals and wrought stainless steel. The study found that both types of metals showed oxide growth, but with significant differences in grain size ...
A team of scientists at Tokyo University of Science has successfully produced hydrogen peroxide using spent coffee grounds and tea leaf residue. The new method, which is simple, cost-effective, and environmentally friendly, opens up new applications for unused biomass resources.
Scientists have developed a sustainable method to create valuable aroma compound mixtures from limonene, the main compound in orange peel oil. The process generates an amber-colored liquid with a pleasant odor and 17 different compounds with fruity, herbal, citrus, and resinous notes.
Researchers evaluated the toxicological effects of BaP on bay scallops, finding increased immune response-related parameters with time at higher concentrations. The study suggests that BaP dampens the immune response of scallops and decreases their capacity to respond to oxidative stress.
Researchers from TROPOS, University of Copenhagen, and Caltech have successfully detected hydrotrioxides (ROOOH) under atmospheric conditions. The formation of these compounds has been estimated to occur through the oxidation of isoprene and other hydrocarbons, with potential implications for health and environmental studies.
Researchers at UC Riverside discover that adding iodide to a water treatment reactor using ultraviolet (UV) light and sulfite can destroy up to 90% of PFAS chemicals in just a few hours. This method accelerates the reaction four times, saving energy and chemicals, and enables the treatment of ten times higher concentrations of PFAS.
Researchers at Waseda University demonstrate a novel zirconocene-catalyzed epoxide ring-opening reaction under visible light, expanding the reaction scope and regioselectivity. The approach enables accessible synthesis of elusive alcohol products with improved efficiency and environmental sustainability.
Researchers at the University of São Paulo developed a natural antioxidant from unripe acerola, replacing banned synthetic additive TBHQ. The antioxidant microparticles were found to be effective in a range of applications, including food products and cosmetics, without affecting color, flavor or odor.
Researchers at Ritsumeikan University in Japan have developed a new method to fabricate cadmium-free thin-film solar cells with improved energy conversion efficiency. The process replaces toxic materials with native buffer layers formed through air-annealing, reducing waste and increasing the potential for large-scale manufacturing.
Researchers have identified a new mechanism involving the oxidation of cysteines in titin protein that modulates cardiac stiffness and dynamics. This discovery sheds light on how the heart adapts to various situations and responds to oxidative balance disorders.
Researchers at Clemson University and SSSIHL discovered a novel way to combine curcumin and gold nanoparticles to create an electrode that efficiently converts ethanol into electricity. The discovery brings replacing hydrogen as a fuel cell feedstock one step closer, with potential applications in sensors and supercapacitors.
A team of researchers at Indian Institute of Science has identified an alternative technique to produce metal powders for 3D printing, side-stepping the problems with atomisation. The new method uses surface grinding to create spherical powders with comparable quality to commercial gas atomised powders.
Researchers developed a new tooth whitening treatment using synchrotron light, showing improved application time needed, efficiency, and safety. The treatment, which uses reduction via metabisulfite, promotes lower concentrations and shorter application times, reducing side effects.
Researchers at Pusan National University have developed oxidation-resistant copper thin films, which could potentially replace gold in semiconductor devices. The films' flat surface reduces the growth of copper oxides on its surface, making them resistant to corrosion.
A new Yale-led study reveals that arc magmas have a higher oxidation state than rocks in most of the Earth's mantle. The research proposes that this is due to hot, water-rich fluids rising through an oxidized sediment layer, producing oxidized magmas that can ultimately erupt as lava from volcanoes.
Scientists elucidated the structures at the interface between a working catalyst and reacting molecules in vanadium pentoxide, revealing which oxygen atoms activate hydrocarbons. The study showed that temperature and gas composition influence the reaction, leading to more sustainable oxidation processes.
Researchers from Skoltech identified four genetic markers that can predict tocopherol composition in sunflower lines, which is crucial for producing high-quality dressing and cooking oils. This breakthrough discovery will help facilitate faster breeding of new varieties.
A chemical used in electric vehicle batteries can also power rockets and satellites, reducing CO2 emissions and requiring less storage. The new fuel, ammonia borane, releases more energy than traditional hydrocarbon fuels and has no environmental impact.
Scientists demonstrate a definitive link between mitochondrial oxidative damage and cognitive dysfunction in Alzheimer's disease using a transgenic mouse model. The study found that Aβ1-42 aggregation in the hippocampus caused cognitive impairment, while oxidation led to mitochondrial dysfunction.
Researchers found that rural areas have similar levels of oxidative potential as urban areas, challenging the misconception that air pollution is more toxic in urban settings. The study also showed that summertime agricultural activity can produce PM2.5 particles that are just as toxic as those from urban settings.
A new study analyzing the rock record rules out atmospheric oxygen before the Great Oxygenation Event, potentially rewriting our understanding of Earth's past. The research team used high-resolution techniques to inspect specimens of the rock, finding evidence that chemical data suggesting early oxygen may have been introduced later.
Researchers found that a unique protein variant in modern humans offers better protection against oxidative stress, but also increases the risk of vascular disease and inflammatory bowel disease. The Neanderthal variant is carried by around 1-2% of the population on the Indian subcontinent.
Researchers at Vienna University of Technology have discovered that visible light, particularly in the blue and green range, accelerates the oxidation of bitumen, leading to cracking and damage to asphalt. This unexpected finding highlights the importance of considering solar radiation in estimates for road durability.
A new study has found that serpentinite plays a crucial role in recycling oxygen in the Earth's tectonic plates. The research, led by Cornell University scientists, reveals that the oxidation state of the mantle is controlled by the subduction system's thermodynamic conditions and geometry.
Researchers from Dalian Institute of Chemical Physics designed a chainmail catalysis system for CO oxidation, achieving near 100% conversion at room temperature. The graphene-isolated Pt catalyst overcomes the issue of deep oxidation and enables efficient CO conversion.
A new model by a SwRI-led team applies geologic evidence to understand how oxygen levels in the Earth's atmosphere evolved. The results indicate that large impacts may have contributed to the scarcity of oxygen, delaying its oxidation.
A new study suggests that drinking 100% orange juice significantly reduces interleukin 6, a well-established marker of inflammation, in both healthy and high-risk adults. However, the results did not quite reach statistical significance for two additional inflammatory and oxidative stress markers.
Researchers developed a strategy to achieve ultra-high loading of single metal atom sites on cobalt oxide support, stabilizing Rh and other noble metals. The strained surface showed exceptional UOR activity and stability, requiring lower working voltage than commercial Pt and Rh catalysts.