Articles tagged with Oxides
A new study by Stanford/Packard researchers found that nitric oxide has varying effects on premature infants. Infants weighing over 1,000 grams benefited from the treatment, with a decreased likelihood of death or long-term lung damage. In contrast, those under 2 pounds experienced higher brain hemorrhage and mortality rates.
New research reveals that nitrogen oxide emissions from soil are much greater than expected, totaling over 40 million metric tons annually, and surpassing fossil fuel combustion by up to 70%
Researchers have discovered that the loss of sulphur atoms from hydroprocessing catalysts is a key cause of their deactivation. This process can lead to a decrease in the catalyst's ability to convert sulphur compounds into clean fuels.
Researchers at the University of Michigan have developed new polymer coatings that generate nitric oxide from compounds found in blood, which may improve accuracy and reduce clots in implanted sensors. The copper-based materials could lead to longer lifespans for these devices, addressing limitations of earlier designs.
Inducible nitric oxide synthase (iNOS) produces nitric oxide, contributing to inflammation and host defense. eNOS-derived NO accelerates host-defense responses but also leads to excessive inflammation and sepsis.
Researchers at Duke University Medical Center discovered that an inability of red blood cells to relax blood vessels through the release of nitric oxide is a major factor behind sickle cell disease symptoms. Restoring nitric oxide to blood cells may serve as a useful method for treating the disease.
Researchers have found that gold nanoclusters can become electrically charged when anchored to defects in a magnesium oxide catalytic bed. This charging mechanism enables the transfer of an electron to reacting molecules, weakening chemical bonds and allowing reactions to occur at low temperatures.
Scientists create a novel polymer, polylimonene carbonate, using limonene oxide and CO2, offering an alternative to petroleum-based plastics. The biodegradable material has characteristics similar to polystyrene, a commonly used plastic.
A new class of 'thin-film' materials has been developed, offering higher mobility, better chemical stability, and ease of manufacture. These amorphous heavy-metal cation multicomponent oxides could lead to new electronic devices, such as gas sensors, consumer electronics, and military equipment.
A new study from Saint Louis University has found that a standard test for vitamin B12 deficiency may be too insensitive, leading to potential misdiagnosis. The research urges doctors to also test for levels of methylmalonic acid in patients suspected of having the deficiency, which can easily be reversed with treatment.
Researchers at Wright State University have discovered a way to convert zinc oxide, commonly used in baby powder, into a light-emitting source. This breakthrough has the potential to replace traditional lighting with a more efficient and cost-effective option, resulting in significant power savings of up to $12 billion per year.
Researchers discover nitric oxide synthase is crucial for Drosophila development, leading to the death of flies lacking the gene. The study uses genetic analysis and mutations to provide conclusive evidence that NOS function is essential for an organism's development.
The study reveals how botulism-causing Clostridium botulinum detects nitric oxide, shedding light on its role in human cardiovascular, neurological, and immunological systems. The research also provides insights into the structural details of soluble guanylyl cyclase, a protein difficult to crystallize for analysis.
Biologists at Duke University discovered that nitric oxide delays flowering in plants, influenced by external concentrations of the chemical. This finding suggests that air pollution from burning fossil fuels could impact critical plant processes.
Cornell University researchers have discovered a method to precisely control the electronic properties of complex oxide materials at the atomic level, replacing silicon insulators. The technique involves removing oxygen atoms from thin films to create vacancies, which act as electron-donating dopants and can be controlled with high pre...
Researchers at Berkeley Lab have successfully controlled the directional growth of single-crystal gallium nitride nanowires, enabling precise tuning of their physical properties. This capability has significant implications for the development of high-performance optoelectronic devices.
Researchers at Oregon State University have discovered a way to produce germanium nanocomposite materials using diatoms, single-celled algae found in ocean water. The method operates at room temperature and could lead to more efficient and cost-effective production of electronic devices.
Researchers discover new method for growing tiny tubes, similar to those found in caves and at hydrothermal vents. The discovery uses a controlled laboratory setup to replicate the formation process, allowing scientists to study it on human time scales.
Researchers found a nematode's oxygen-sensing mechanism can regulate blood pressure. The discovery reveals that worms prefer lower oxygen concentrations, which may explain their unique behavior.
A recent study published in Hepatology suggests that using nitric oxide during liver reperfusion can protect transplanted livers from cell death, improving survival rates. Researchers found that nitric oxide blocks mitochondrial damage, a key factor in organ rejection and failure.
Researchers found that moderate exercise, combined with antioxidant vitamins C and E and the amino acid L-arginine, significantly reduced atherosclerosis lesions by 40% compared to high cholesterol diet alone. Exercise also lowered blood pressure and prevented unwanted blood clotting.
Researchers found large ozone trends in low latitudes and the Southern Hemisphere, indicating the ozone smog problem has expanded globally. The study suggests that increasing energy use worldwide causes large-scale ozone increases, reducing global air quality.
Researchers at Johns Hopkins Medicine discovered that nitric oxide attaches to parkin protein, reducing its ability to mark proteins for destruction. This process may contribute to Parkinson's disease progression, providing a potential new target for treatment.
A study by Texas A&M University reveals Houston's air quality is severely impacted due to industrial emissions and auto exhaust, posing a significant health risk to its 5 million residents. The city must take steps to curb its air pollution problems, including alternative energy sources and more efficient transportation.
Scientists have found that nighttime chemistry removes nitrogen oxides from the marine boundary layer off New England's coast, leading to reduced ozone production. This process can short-circuit some ozone formation and affects air quality forecasts.
The study reveals that nanoparticles are 30 times more efficient at promoting manganese oxidation than bulk material. This discovery challenges the long-held assumption that manganese oxidation requires bacteria, suggesting particle size may play a key role.
Scientists at UC Davis create a novel fluorescent assay for detecting pesticides on a chip, utilizing lanthanide oxide nanoparticles as a reporter. The approach has the potential to improve pesticide detection in environmental testing and other fields.
Researchers observed electronlike excitations at temperatures above the transition temperature in cobaltate materials, suggesting a novel mechanism for high-temperature superconductivity. This discovery opens up new avenues for understanding the phenomenon of high-temperature superconductivity.
A team of NIST and IBM researchers has quantified 'electrical capture defects' in hafnium oxide chips, which can drain currents and hinder transistor operation. By applying a voltage pulse and measuring current, the scientists identified critical locations where these defects occur near the silicon substrate-hafnium oxide interface.
Vascular spasm is an under-recognized source of damage to heart muscle, leading to reduced function and increased risk of death. The study found that correcting genetic defects in heart muscle cells can halt focal degeneration and prevent vascular spasm.
A study of influenza vaccination in children with asthma found no significant reduction in asthma exacerbations caused by the flu. In contrast, a separate study showed that maternal and personal smoking synergize to increase airflow limitation in offspring, increasing the risk of Chronic Obstruction Pulmonary Disease (COPD).
Researchers have identified a mechanism for the size effect in ferroelectric oxides, which can lead to the loss of memory properties. Linear crystal lattice defects can cause material deformation and reduce storing properties.
Researchers discovered that nitrite in saliva significantly increases gastric mucosal blood flow and mucus thickness, suggesting a potential link between bad breath and gastric ulcers. This finding also has implications for conditions like sickle cell anemia.
Researchers at TU Vienna and Clausthal have discovered a new material, strontium titanate, that can be used as a gate oxide to overcome the miniaturization limit of transistors. The material's electrical properties can be controlled by chemical processes at the interface, enabling the design of even smaller and more efficient transistors.
Bacteria use iron oxide to breathe in anaerobic environments, allowing them to degrade toxic waste. Genetic manipulation enables tailored targeting of specific contaminants.
A new study shows that inhaled nitric oxide is an effective treatment for hypoxic respiratory failure (HRF) in newborns, saving over $440,000 per 100 cases compared to the invasive ECMO procedure. This breakthrough therapy benefits patients and reduces costs without compromising treatment outcomes.
A new study published in PEDIATRICS reveals that inhaled nitric oxide is a more cost-effective treatment option for newborns with HRF, resulting in significant savings of over $440,000 per 100 cases. This breakthrough therapy avoids the need for invasive ECMO surgery and its associated costs.
The $5 million Student Nitric Oxide Explorer (SNOE) satellite, launched in 1998, measured nitric oxide in the upper atmosphere affecting Earth's ozone layer and X-rays from the sun. SNOE re-enters atmosphere in early Dec., with most of it expected to burn up.
A study found that nitric oxide can prevent lung disease and death in premature infants by reducing the risk of severe bleeding into the brain. The treatment, which involves adding small amounts of nitric oxide to oxygen, has been shown to improve survival rates and reduce the need for long-term ventilation.
Researchers linked systemic nitric oxide production with changes in the endothelial lining of arteries after stress. Exercise was found to improve the marker in patients at risk for cardiovascular disease.
Nitric oxide inhibits endothelial cell release of inflammatory substances by targeting a specific protein, thereby regulating exocytosis and preventing inflammation. Researchers have developed a novel drug that blocks this process, showing promise as an anti-clotting agent for various diseases.
A new record of nitrous oxide concentration variations reveals that both land and ocean bacteria contributed equally to atmospheric emissions during glacial periods. This finding contradicts the long-held theory of oceanic storage being responsible for low atmospheric carbon dioxide levels.
A molecule called nitric oxide is a natural regulator of new neurons in the adult brain. Blocking nitric oxide production stimulates neural stem cell proliferation, increasing brain neuron generation and contributing to the adult brain's architecture.
Researchers have identified a new target for treating female sexual dysfunction, which is caused by an enzyme that disrupts blood flow. The discovery provides an important advance in understanding the biochemical cascade involved in healthy sexual function.
Researchers at NC State and Oak Ridge National Laboratory have successfully tuned the atomic-level zone between substances, opening the way for smaller, faster and smarter computers. By manipulating the electronic dipole charge at the interface, they've found a way to overcome the limitations of Schottky barriers.
Researchers at Georgia Tech have developed an oxide system that can produce hydrogen from water vapor and methane at lower temperatures, potentially allowing it to be powered by solar energy. This could provide a lower-cost alternative to traditional reforming processes for small-scale fuel cells in homes or vehicles.
A recent study by Dr. Wieslaw E. Kozak found that nitric oxide has a distinct role in fever regulation, involving three different enzymes: neuronal nitric oxide synthase, inducible nitric oxide synthase, and endothelial nitric oxide synthase. The researchers used knockout mice to study the impact of these enzymes on fever response.
A recent Italian study found that men exposed to high levels of traffic pollution have impaired sperm quality and reduced fertility. The research team examined semen samples from 85 motorway tollgate workers and 85 aged-matched controls, revealing deranged sperm parameters below World Health Organisation levels.
Researchers have developed a new method using titanium oxide nanocrystals to deliver genes into cells, potentially overcoming current limitations of gene therapy. The nanocomposites can separate when exposed to light or x-rays, allowing for targeted gene delivery.
A study of 1782 first-year university students in Auckland found a high prevalence of recreational nitrous oxide use. The survey revealed that many students were unaware of the potential health risks associated with this substance.
Researchers at Johns Hopkins discovered a compound that doubles the hearts' ability to contract and relax, stimulating the release of calcitonin gene-related peptide. This improvement is particularly notable in failing hearts, without any reported toxicity.
Researchers at Cornell University have developed a method to incorporate iron oxide particles into porous ceramic structures, enabling size exclusion and magnetic interactions. This enables the separation of single proteins from thousands found in blood serum, with potential applications in catalytic conversion.
Dutch technologists have developed a more environmentally friendly car tyre by mixing silica and rubber in a specific ratio. The tyre features a low rolling resistance, leading to reduced fuel consumption. Silica grain size plays a crucial role in the rolling resistance, with smaller particles resulting in lower resistance.
Researchers found that lightning creates significant amounts of nitrogen oxides and ozone in the free troposphere. The study showed that lightning is a major contributor to regional air chemistry, generating more oxidants that help clean up the atmosphere while also producing pollutants like ozone.
Birks, a renowned Boulder chemist, has won the ACS Award for Creative Advances in Environmental Science and Technology. He is developing smaller instruments to measure atmospheric gases using balloons, which may have medical benefits, such as tracking nitric oxide levels for asthma treatment.
Researchers at Boston Children's Hospital found that providing extra nitric oxide through inhalation may reverse or stop vaso-occlusive crisis symptoms. The treatment reduced pain scores and morphine use in patients with severe sickle cell disease, warranting further investigation.
A computer model developed by Brink found that reducing ammonia emission can increase nitrous oxide and methane emissions. The most effective measures to decrease all three emissions involve adjusting feed, improving fertiliser use, and increasing animal productivity.
The study found that conventional diesel buses produce nitrogen oxide pollutants contributing to photochemical smog and fine soot particles. Laser sensors measured pollutant levels in exhaust plumes from different bus types, revealing varying pollution problems.
A genetic variant in the NOS2 gene boosts nitric oxide levels, protecting against malaria disease. This trait explains why some people with malaria have mild symptoms and recover fully.
Researchers at Magee-Womens Research Institute found that the pregnancy hormone relaxin increases nitric oxide production in blood vessels, leading to improved blood flow. This discovery may lead to new treatments for high blood pressure and cardiovascular diseases.