Articles tagged with Oxides
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A team of Princeton and Rice University researchers has developed a new method to identify nitric oxide using lasers and sensors, making it possible for large-scale deployment. The device can detect tiny amounts of the gas in the air or human breath, monitoring pollution and detecting disease such as asthma.
By applying strain to single-crystal vanadium oxide micro- and nanowires, researchers created phase inhomogeneity, a phenomenon critical to collective electronic behavior of correlated electron materials. This breakthrough could lead to designing and controlling phase inhomogeneity for future devices.
Nitrous oxide emissions from human activities have surpassed those of chlorofluorocarbons (CFCs), threatening the ozone layer. The NOAA study found that nitrous oxide will continue to erode the ozone layer for many decades.
Researchers developed a non-toxic method to synthesize zinc oxide nanorods using water and ultrasound. The approach produces uniform nanorods of 30-100 nm in diameter, suitable for large-scale production. It enables safe use in medical applications, food products, dentistry, and electronics.
Researchers found that elevated arginase levels contribute to vascular eye damage in diabetic retinopathy by reducing nitric oxide production. Normalizing arginase levels could potentially halt disease progression by preventing inflammation and vascular constriction.
A preclinical study suggests that ancient Chinese herbal formulas have profound nitric oxide bioactivity, which can signal blood vessel relaxation and eliminate clots. The findings offer new hope for cardiovascular disease prevention and treatment.
Researchers have found a new way to transform graphite oxide into graphene using an ordinary camera flash, which could lead to the production of low-cost transparent and flexible electronics. The process is simple, energy-efficient, and chemical-free.
Researchers at MIT have successfully grown carbon nanotubes without a metal catalyst, using zirconium oxide instead, which could improve electronic performance and material strength
Researchers find that nitrogen oxides combine with hydrochloric acid to create chlorine atoms, speeding up smog formation and contributing to corrosion indoors. This phenomenon should be added to atmospheric models to better predict air pollution levels.
Researchers at Ohio State University have developed a new synthesis method to create highly pure and small nickel oxide nanoparticles for gas sensors. The material reacts quickly and reliably to various toxic industrial chemicals and biological warfare agents, enabling the detection of these substances.
Wake Forest University scientists have developed a new detection method for nitroxyl, which can strengthen canine heartbeats and has potential benefits for humans. The new tool will help answer questions about natural production of nitroxyl in the human body.
Researchers have developed novel compounds that absorb by cancer cells and release nitric oxide upon specific light wavelengths, inducing apoptosis and killing tumor cells. The compounds, called dye-sensitized ruthenium nitrosyls, offer a localized delivery of high concentrations of nitric oxide without causing inflammation.
Researchers have found a new proxy to study the nitrogen cycle, revealing that humans have disrupted it by altering the amount of nitrogen stored in the biosphere. The team traced the source of nitrates to nitric oxides released through fossil fuel burning and found significant changes between 1950 and 1980.
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.
Researchers have discovered that a beating heart and blood flow are necessary for the development of the blood system, which relies on mechanical stresses to cue its formation. Compounds that modulate blood flow had a potent impact on the expression of a master regulator of blood formation, known as Runx1.
Researchers found that beta-amyloid protein generates nitric oxide, which attacks and damages mitochondria in neurons. This damage leads to synaptic injury and eventual nerve cell death, contributing to Alzheimer's disease progression.
Engineers create method for stamping multiple graphene sheets onto substrate in precise locations, enabling mass production of smaller, faster electronics. The technique holds promise for delivering quantum mechanical effects and enabling new kinds of electronics.
Researchers found that nitrous oxide production rates in small stream sediments are linked to nitrate availability. The study suggests that management efforts to reduce nitrous oxide production should focus on limiting nitrate transport to stream ecosystems.
Researchers at the University of Michigan have developed a new method to detect nitric oxide in exhaled breath, a potential indicator of diseases such as lung cancer and tuberculosis. The technique uses molecular gels that congeal when exposed to nitric oxide and oxygen, allowing for simpler and less subjective detection methods.
Aminoguanidine reduces pancreatic tumor growth, delays metastasis appearance, and extends mouse survival. The compound's mechanism involves inhibiting nitric oxide synthase, anti-angiogenic effects, and reduced antioxidant enzyme expression.
Researchers find that decreased PPAR activity may cause irreversible lung damage and pulmonary hypertension in children with heart defects. Boosting PPAR signaling with existing drugs could help restore healthy blood vessel balance and prevent disease.
Researchers developed compounds that inhibit an enzyme producing nitric oxide, a neurotransmitter that can damage brain tissue. The treatment was effective in preventing cerebral palsy in animal models, suggesting a potential preventive strategy for humans in the future.
Researchers found that knocking out the protein tyrosine phosphatase 1B (PTP1B) gene improves cardiovascular function in genetically fat mice with diabetes. The study suggests that PTP1B contributes to insulin resistance, which can lead to impaired nitric oxide dilation and vascular remodeling. By improving fine control of blood glucos...
Researchers at Northwestern University developed a novel method to assemble graphite oxide sheets into continuous membranes, overcoming conventional thin-film processing limitations. This breakthrough enables the creation of high-quality graphene devices with high successful yields and potential applications in energy-related fields.
Scientists have discovered a unique property of domain walls in bismuth ferrite, allowing them to conduct electricity at room temperature. This discovery could lead to the development of future electronic devices with shrunk logic and memory functions.
A new study at University College London found that nitrous oxide enhances imagination vividness and imaginary suggestibility in participants, which could lead to improved pain relief for dental patients. The study's findings suggest that combining laughing gas with instructions and suggestions might enhance the pain-relieving effect.
Researchers have discovered a way to produce brilliant white light using zinc oxide and sulfur, with potential applications for energy-efficient and safe illumination. The new material has been shown to convert invisible ultraviolet light into natural white light, offering advantages over current fluorescent bulbs and LEDs.
Researchers found PSD-95 stimulates the growth of large dendritic spines that are connected to multiple axons. Reducing PSD-95 levels impairs synapse development.
Research from the University of Leicester reveals that nitric oxide can alter brain function, impacting neurodegenerative diseases like Alzheimer's. The finding suggests a potential new approach for treating these conditions and gaining a deeper understanding of brain function.
The new flexible charge pump generator can produce an oscillating output voltage of up to 45 millivolts, converting nearly seven percent of the mechanical energy applied into electricity. This advancement resolves key issues with previous generators, such as moisture infiltration and wear, enabling more robust designs.
St. Jude researchers discover how intracellular pathogens use biochemical machinery to block nitric oxide production, a key chemical weapon against them. The findings offer hints for fighting bacteria and suggest the development of targeted drugs to inhibit such diseases as tuberculosis and toxoplasmosis.
Researchers have created reliable nanopatterns of a spin-transition compound on silicon oxide chips, paving the way for new molecular storage media. The development uses special unconventional micro- and nanolithographic techniques to print neutral iron(II) complexes onto silicon wafers in the form of fine lines.
Researchers at UIC are developing a new drug class that targets nitric oxide delivery to the brain, aiming to slow Alzheimer's disease progression. The team proposes delivering nitric oxide via bioactive molecules to restore and protect brain function.
Researchers found that no-till practices can lead to increased nitrous oxide emissions, offsetting the soil's carbon dioxide sink. In a study of two soil types, nitrous oxide emissions doubled under no-till conditions in the heavy clay soil.
Researchers at the University of Texas at Austin have created a new graphene-based material that helps solve the structure of graphite oxide. The material, made by replacing normal carbon atoms with magnetically active carbon-13, will enable scientists to create different types of graphene and study its chemical structure.
A new study found that measuring exhaled nitric oxide in adolescents with asthma did not improve disease control. Despite initial improvements, participants who received treatment with exhaled NO monitoring had similar asthma symptoms and exacerbations as those without
Monitoring exhaled nitric oxide levels did not improve asthma management in patients managed according to NIH guidelines, but may benefit specific subgroups. The study suggests that most patients can control their asthma with relatively easy-to-measure symptoms and lung function.
Measuring exhaled nitric oxide (NO) has no clinically significant impact on asthma control when used in conjunction with conventional treatment. Patients in the NO monitoring group received higher doses of inhaled corticosteroids, but this did not lead to better symptom control.
Researchers used aberration-corrected STEM instruments to visualize individual gold atoms on iron oxide surfaces, discovering that bilayer nanoclusters with 10 gold atoms are most active in CO conversion, achieving up to 100% efficiency
Researchers found networks of iron and nickel nanoparticles embedded within oxide scales, allowing carbon to diffuse through without defects. This discovery could lead to more corrosion-resistant alloys with ten times longer life.
Researchers found two independent ways to modify metal work function using self-assembled monolayers, improving device characteristics. The study also showed that different metals have virtually identical work functions when covered with the same type of organic molecules.
Researchers found that critical patients in ICUs can reduce oxide stress and improve their clinical situation by taking antioxidant supplements through diet. The study, published in Critical Care, established recommended amounts of vitamins A, E, and C, as well as minerals, for proper antioxidant defenses.
A new study reveals the nitric oxide system plays a crucial role in regulating proteins and controlling cellular activity. The discovery opens up new avenues for biochemical research and potential therapeutic applications.
Scientists have determined the structure of a catalytic material that can convert methane into benzene, laying the foundation for converting excess methane into various useful fuels and chemicals. The breakthrough was achieved using an ultra-high field nuclear magnetic resonance spectrometer to analyze the active catalyst.
Researchers at Eindhoven University of Technology and Fraunhofer Institute achieved an unprecedented 6% improvement in solar cell efficiency by depositing a thin layer of aluminum oxide on the front of a silicon solar cell. This breakthrough brings the industrial application of high-efficiency solar cells closer, with costs expected to...
Researchers have identified 19 proteins and enzymes targeted by nitric oxide in Kalanchoe pinnata, affecting seed germination, photosynthesis, sugar metabolism and disease resistance.
Researchers at the University of Washington have created a dramatic improvement in dye-sensitized solar cells by using a popcorn-ball design, which manipulates light to convert solar energy into electricity more efficiently. The new approach doubles the efficiency of converting solar energy to electricity, outperforming previous records.
Nitrous oxide emissions from waste treatment plants and agriculture are increasing at alarming rates, posing a significant global warming threat. The release of this potent gas can be controlled with suitable management strategies, but recognition of its importance is crucial.
Scientists have discovered that a chunk of hematite can conduct electrons when exposed to the right chemical conditions. This phenomenon, linked to mineral surfaces, has important implications for understanding soil evolution and environmental cleanup. The discovery challenges long-held assumptions about electron conduction in minerals.
Researchers developed an optical technique using 'frequency combs' to detect biomarkers for diseases like asthma and chronic obstructive pulmonary disease. The method simultaneously identifies tiny amounts of molecules in the breath with high precision.
The Nitrous Oxide Focus Group brings together influential organizations to address the potent greenhouse gas's significant impact on agriculture and industry. Key research findings suggest that nitrous oxide is 300 times more potent than carbon dioxide, making its longevity in the atmosphere a potentially more damaging legacy.
Researchers develop fiber-based nanogenerators that harness energy from physical movement, generating up to 80 milliwatts of power per square meter of fabric. The devices use piezoelectric and semiconducting properties of zinc oxide nanostructures to convert mechanical motion into electrical energy.
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.
Researchers at Brookhaven National Laboratory discovered that gold-cerium oxide and gold-titanium oxide nanocatalysts exhibit high activity in the water-gas shift reaction. The catalysts' oxides break apart water molecules, enabling the elimination of carbon monoxide and improving fuel cell efficiency.
Prelox, a patented blend of Pycnogenol and L-Arginine, shows significant improvement in men with ED after just one day, increasing nitric oxide production for enhanced blood flow. The study achieved almost 100% increase in orgasmic function, sexual desire, and overall satisfaction.
A preclinical study found that mice fed extra nitrite and nitrate had 48% less cell death in the heart following a heart attack. Nitrite/nitrate-rich diets may improve outcome following a heart attack by forming nitric oxide gas, which reopens closed or clogged arteries.
Researchers used laser-perforated diamond anvil cells to investigate oxide glass structures at high pressures. They discovered that arsenic oxide underwent a transformation at 20 GPa, creating new isomers. This breakthrough may help understand magma behavior during the early Earth's formation.
A team of researchers from Wake Forest University has discovered a previously undetected chemical process within the oxygen-carrying molecule hemoglobin that converts nitrite salt to the vasodilator nitric oxide. This reaction mechanism could have far-reaching implications for treating cardiovascular diseases.
Millions of patients receive transfusions with impaired blood, which can lead to heart attacks and death. Researchers found that adding nitric oxide back to stored blood restores its ability to deliver oxygen.
A new study reveals that Concord grape juice stimulates an arterial relaxation effect, providing a prolonged relaxation effect that has not been reported with red wine. The beneficial effect of Concord grape juice lasts up to six hours, making it a heart-healthy alternative to moderate red wine consumption.