Articles tagged with Hydrogen
Researchers at the University of Pittsburgh have created a self-assembly method to grow gold nanowires, which can be used to detect poisonous gases such as hydrogen sulfide in natural gas. The gold nanowires are highly conductive and can detect gas levels comparable to existing sensing techniques.
McMaster University's Christine Wilson presents findings on galaxy Arp 220's dazzling rate of star formation, which is 200 times faster than our own Milky Way. The star forming core of Arp 220 is only about 3,000 light years across.
Researchers at Emory University School of Medicine have identified a garlic oil component that can deliver the benefits of hydrogen sulfide to the heart. At low concentrations, diallyl trisulfide has been shown to protect the heart from damage by reducing damaged tissue and lowering reactive oxygen species.
Researchers at Delft University of Technology found that smaller metal alloy nanoparticles release hydrogen gas more quickly when stored in a metal hydride. This could lead to more efficient hydrogen storage for fuel cells.
Scientists at NIST have discovered a way to store hydrogen efficiently using iron-doped magnesium, which can absorb and release hydrogen quickly and safely. The iron veins create channels within the metal grains that allow for fast hydrogen transport.
Researchers have created a reusable system to store and extract hydrogen from ammonia borane, a stable solid, making it suitable for various applications. The system is air-stable and efficient, with potential uses in motor-driven cycles and small aircraft.
A CSIRO study reveals galaxies have less molecular hydrogen gas than in the past, leading to fewer stars forming. The decline in gas availability is linked to Dark Energy's acceleration of the Universe's expansion.
A new study reveals that only a small percentage of microbes in the colon are responsible for breaking down undigested food, with variations in abundance across different regions of the colon. The findings have implications for understanding inflammatory bowel disease and potential targets for treatment.
A new approach to growing graphene reduces problems plaguing researchers, clearing a path for sophisticated electronic devices. Hydrogen controls the graphene grain shape and size, enabling the creation of well-defined graphene grains with perfect hexagonal shapes.
University of Illinois researchers have confirmed that amorphous silicon has two-state dynamics, a characteristic of glass. However, adding hydrogen robs the material of this property and introduces micro-crystalline structure, which significantly affects its behavior.
Researchers at Berkeley Lab demonstrated antenna-enhanced gas sensing at the single particle level using a palladium nanoparticle on a gold nanoantenna. The technique amplifies plasmonic sensing signals, eliminating statistical characteristics and offering noninvasive, biocompatible applications.
Researchers found that inhaling small amounts of hydrogen reduces hyperoxic lung injury, inflammation and fluid buildup in the lungs. Hydrogen also induces activation of heme-oxygenase (HO-1), an enzyme that protects lung cells from damage.
Researchers have revealed a new single-stage method for recharging the hydrogen storage compound ammonia borane, enabling the potential use of hydrogen in vehicles. This breakthrough could reduce the expense and complexity of the recycle stage, making hydrogen a more attractive fuel option.
Researchers design nanocomposite material with magnesium nanoparticles and polymethyl methacrylate matrix, rapidly absorbing and releasing hydrogen at modest temperatures. This breakthrough material may have broad applicability to other areas of energy research.
A new method called Antisolvent Swing Regeneration reduces the amount of heat needed during processing, potentially saving at least 10% of energy. This process uses a recyclable binding organic liquid to remove hydrogen sulfide from natural gas.
A Penn State materials chemist has developed an artificial system that mimics photosynthesis to produce solar-derived hydrogen fuel. However, the process remains inefficient and expensive due to recombination of electrons and limited lifetime of the system. The researcher aims to improve efficiency by modeling energy pathways and adjus...
Researchers found NGC 1266, an early-type galaxy, expelling molecular gas at high speeds, potentially leading to its transformation into a 'red and dead' state. The galaxy's gas loss could be a key mechanism in the evolution of galaxies from star-forming spirals to gas-poor red and dead galaxies.
Dunwei Wang, Boston College Assistant Professor of Chemistry, has received a $550,000 National Science Foundation Career Award to refine his nanonets technology for clean energy applications. His research focuses on extracting hydrogen from water using sunlight and aims to improve the efficiency and cost-effectiveness of this process.
A UC Riverside-led team discovered chemical evidence of oxygen-free ancient oceans containing abundant hydrogen sulfide. This finding suggests that ocean chemistry influenced the evolution of early life, potentially delaying its appearance and proliferation.
Scientists in China have created a more eco-friendly and cost-effective way to produce deuterium-depleted drinking water, which may be beneficial for human health. The new technique uses a platinum catalyst to efficiently remove deuterium from water, reducing levels from 150 ppm to 125 ppm.
The team made the first measurements of GJ 1214b's atmosphere, revealing a featureless spectrum that could be caused by a thick cloud or haze. The data suggests that the atmosphere is either dense with hydrogen or composed of steam vaporized by the nearby star.
Researchers at Harvard University have made significant breakthroughs in methane-fueled solid-oxide fuel cells, reducing operating temperatures and costs. The development of platinum-free micro-SOFCs could enable the use of methane as a fuel source for laptops and portable electronics.
Researchers used transmission electron microscopy to study the effects of increasing hydrogen concentrations on iron metal catalysts. They found that too much hydrogen causes fibers with thick walls, instead of nanotubes, or no growth at all.
A Caltech team has found structurally bound hydroxyl groups, indicating the presence of water in a lunar mineral. The discovery is significant for understanding the moon's composition and its history.
Radio astronomers have developed a new technique for studying dark energy by mapping large-scale cosmic structures. This method, called intensity mapping, allows them to accumulate radio waves emitted by hydrogen gas in vast volumes of space, revealing insights into the nature of dark energy and its impact on the Universe's evolution.
A new study finds that climate change mitigation will not quickly return the hydrological cycle to its previous state. In contrast, data on tropical cyclone activity disagree, with some datasets showing an increase in storms and others not.
Researchers from Germany and the US developed a new synthesis paradigm for efficient hydrogen generation. The team found that the light wavelength used in the process affects its efficiency, with redder light resulting in better outcomes.
Hydrogen gas clouds found near Galactic bar exhibit distinct properties, indicating they originated from supernova explosions and young star winds. This discovery sheds light on critical process of material movement between Galaxy's disk and halo.
A team of researchers from Virginia Commonwealth University has identified a new theoretical approach to simplify the synthesis of hydrogen fuel storage materials. An external electric field can significantly improve the thermodynamics and reversibility of the system, making it an ideal energy carrier.
Scientists have modeled three hydrogen-dense metal alloys and found that superconductivity can be induced by high pressure, with transition temperatures as low as -423°F. The study suggests that the superconducting state comes from electron interaction with vibrational energy through the lattice.
Scientists at Harvard University used a quantum computer to calculate the precise energy of molecular hydrogen, solving a long-standing problem in theoretical chemistry. This achievement has significant implications for fields like cryptography and materials science.
The Naval Research Laboratory's Ion Tiger has achieved a 26-hour flight duration, exceeding its previous record of 23 hours and 17 minutes. The fuel cell system provides reliable, quiet operation and extremely high efficiency, paving the way for tactical flights and extended flight times.
A University of California, Irvine computer model forecasts improved air quality in the Greater Los Angeles area if 75% of drivers switch to hydrogen fuel cell vehicles by 2060. The model suggests a 60% reduction in greenhouse gas emissions and lower levels of soot and ozone.
A new Stanford University study suggests the early ocean was much more temperate and life likely diversified and spread across the globe sooner. The researchers analyzed isotope ratios in ancient rocks, finding that the ocean temperature could not have been more than 40C, contradicting previous estimates of at least 55 degrees Celsius.
The Ion Tiger fuel cell unmanned air vehicle has achieved an unprecedented 23-hour flight duration, making it a significant milestone in electric UAV technology. The aircraft's 550-Watt fuel cell system provides 7 times the energy of equivalent batteries, enabling long-endurance missions with reduced noise and signature.
Researchers have designed a new material called graphone, derived from graphene, with unique optical and transport properties. By controlling hydrogen coverage, they made graphene magnetic, opening possibilities for novel applications in spintronics.
A new study by Dipak K. Das and colleagues reveals that freshly crushed garlic generates hydrogen sulfide, a chemical signaling substance that relaxes blood vessels and promotes heart health. Processed and cooked garlic loses this ability, resulting in reduced effectiveness.
Astronomers from Queen's University Belfast have proposed a new physical interpretation of the 2008 supernova SN2008ha, suggesting it could be from a massive star. The team, led by Dr. Stefano Valenti, found a weak explosion with unusual properties that differ from those associated with white dwarf stars.
A high-pressure form of ammonia borane has been discovered, which can store around 30 weight percent hydrogen by improving the hydrogen content of the material by roughly 50 percent. The new compound could potentially stabilize at or near ambient conditions with a large amount of hydrogen content.
Researchers have created a hydrogen storage system that can fill up a vehicle's fuel tank within five minutes with enough hydrogen to drive 300 miles. The system uses metal hydride to absorb hydrogen gas and incorporates a heat exchanger to efficiently remove heat generated during absorption.
A team of scientists has identified carbon nanostructures as catalysts for storing and releasing hydrogen. Complex hydrides show promise for hydrogen storage, but previous studies indicate defects from added catalysts. The new solvent technique allows for defect-free introduction of catalysts.
A Duke University-led team of chemists has successfully grown exclusively semiconducting carbon nanotubes, paving the way for manufacturing reliable electronic nanocircuits. The achievement paves the way for high-current field-effect transistors and sensors, offering reduced heat output and higher frequency operation.
A team of astrophysicists has discovered that hydrogen is concentrated in permanently shaded lunar craters, which could indicate the presence of ice. This finding is significant for future human exploration of the moon and could provide a water source for establishing a manned base.
Researchers at Emory University School of Medicine found that low concentrations of hydrogen sulfide can protect mice from heart failure. The gas is administered intravenously to treat humans with heart failure, showing promising results in regaining heart function and reducing mortality.
A Dutch researcher has developed a new metal alloy that can absorb hydrogen, making it possible to store the gas in lighter tanks. This breakthrough could make hydrogen a cleaner alternative to battery-powered vehicles.
Researchers at MU and MRI develop new hydrogen storage material using corncobs and boron, increasing storage capacity and reducing tank size. The project aims to create more flexible and less bulky fuel tanks for vehicles.
Researchers propose that Eta Carinae's historic 1843 outburst was a fast blast wave similar to a supernova, but less energetic. This discovery challenges current theories and may indicate supermassive stars undergo periodic explosions before their final supernova.
Scientists at Carnegie Institution's Geophysical Laboratory study nitrogen under extreme conditions, discovering changes in its melting temperature and structure. These findings could lead to the development of new high-energy fuels with potentially higher energy content than existing materials.
Researchers explore climate change through corals and bat guano, as well as the Mississippi Delta's complex history of uplift and subsidence. Additionally, a study reveals that mantle upwelling controls the depth of fast-spreading ridges, while asteroid dust found in Antarctic ice provides insight into the Koronis asteroids.
Researchers have developed a treatment using hydrogen sulfide to induce reversible metabolic hibernation, significantly improving survival rates for rats after extreme blood loss. The study found that 75% of treated rats survived at least two weeks compared to 23-14% in control groups.
Purdue researchers use a new hydrogen facility to study fundamental processes in hydrogen-oxygen engines, improving cooling efficiency and reducing costly overhauls. Accurate heat flux measurements enable more precise computational models, leading to better design performance and cost savings.
Researchers at Arizona State University have discovered microorganisms that can convert the chlorinated solvent TCE into ethene, a harmless product. Using membrane biofilm reactors, these organisms were able to remove TCE from water efficiently and effectively, making them a promising tool for cleaning up contaminated groundwater.
Using a theoretical model, researchers have shown how a hydrogen molecule responds to laser pulses by creating a changing musical chord. The movement of the two protons in the molecule creates different frequencies, which are similar to notes in a musical chord.
The Arecibo Observatory has discovered methanimine and hydrogen cyanide, two key ingredients for life, in a distant galaxy. These molecules were found by searching for radio emission at specific frequencies, using the world's largest and most sensitive radio telescope.
Researchers at Fred Hutchinson Cancer Center discovered that hydrogen sulfide increases the life span of nematode worms by 70 percent and makes them more tolerant to heat. The compound is believed to regulate a gene called SIR-2.1, which influences life span in many organisms.
Fuel cells face challenges such as membrane degradation, carbon corrosion, and platinum instability, leading to reduced durability. Researchers are working to understand the fundamental failure mechanisms and develop new materials or system approaches to mitigate these issues.
Researchers reproduced Thomas Young's experiment in a hydrogen molecule using electrons and X-rays, revealing wave-like behavior that suggests a quantum nature. The findings provide insight into the transition between classical and quantum physics, with potential implications for quantum cryptography and computation.
A new study suggests that the Great Dying 250 million years ago may have been caused by creeping environmental stress from volcanic eruptions and global warming. The research finds that organisms in the deep ocean died first, followed by those on ocean shelves and reefs, supporting a model that attributes the extinction to enormous vol...
Researchers found that the northern portion of the Tibetan Plateau rose later than previously thought, revealing a complex timeline for the plateau's growth. This discovery can help climate models and understand ancient biological communities.
Researchers at Argonne National Laboratory have developed flexible hydrogen sensors using single-walled carbon nanotubes, exhibiting high sensitivity and fast response time. The sensors can detect 1% hydrogen concentration in room temperature within 3 seconds and withstand bending and relaxation multiple times.