Articles tagged with Hydrogen
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.
Recent findings indicate a trend of increasing water content in the atmospheres of planets, from Jupiter (depleted) to Uranus and Neptune (water-rich). Computer models provide insights into planetary atmospheric chemistry, predicting the composition of Earth-like planets in other solar systems.
Researchers at Princeton University have developed a new fuel cell design that allows for precise control over power output and reduces complexity. The system uses a novel approach to regulate hydrogen flow, enabling efficient water management and higher power production.
Scientists have successfully dissociated water at high pressure to form a solid mixture of molecular oxygen and molecular hydrogen, creating an alloy. The researchers used x-rays to cleave the O-H bonds in water, resulting in a stable alloy that withstood various tests.
Research led by USC earth scientist David Bottjer suggests the Earth's environmental stressors led to mass extinction, contradicting meteorite strike theory. The study proposes a warming Earth and reduced ocean circulation as key factors in creating an environment where toxic hydrogen sulfide dominated, leading to species disappearances.
Researchers at Arizona State University have created a tiny hydrogen-gas generator that can power electronic devices up to three times longer than conventional batteries. The generator uses borohydride solution and is recharged by refilling a fuel cartridge, making it safer for the environment.
University of Pittsburgh professor Goetz Veser has created a safer alternative to traditional reactors by designing microreactors that can handle explosive reactions without explosions. These reactors use platinum catalysts and silicon chips with tiny channels to control the reaction and minimize pollutants like nitrogen oxides.
A daily glass of orange juice can boost citrate levels in the urine and reduce crystallization of uric acid and calcium oxalate, two common ingredients in kidney stones. In contrast, lemonade did not increase citrate levels, suggesting that its constituents counteract the beneficial effects of high citrate content.
A team of researchers from Georgia Institute of Technology successfully tested a hydrogen-powered unmanned aircraft with a 22-foot wingspan, generating only 500 watts of power. The fuel-cell system makes the aircraft more compelling than just a lab demonstration or even a fuel cell system powering a house.
Researchers studied globular star cluster NGC 6397, capturing high-resolution images of faint stars. They identified two fundamental transitions in star physics related to age, which may refine the Milky Way's age. The findings provide insights into the physics of low mass stars and white dwarfs.
NIST researchers discovered that metal-organic frameworks (MOFs) can store up to 10% of their weight in hydrogen at low temperatures. The nano-cage structure offers a promising approach for storing and releasing hydrogen, which could potentially replace fossil fuels in future automobiles.
A study found a nearly doubling of age-adjusted suicide rates in rural Haywood County, NC, from 1997-2002. The researchers suggest possible exposure to hydrogen sulfide and other toxins released by nearby paper mill operations may be linked to the increased suicides.
PNNL scientists employed x-ray spectroscopy to observe the reaction as it occurred, identifying a cluster of four rhodium atoms at the active site. This approach allows researchers to understand catalyst-reactant interactions under practical conditions, shedding light on key catalytic processes.
Researchers have discovered a more stable compound, diammoniate of diborane (DADB), that may spontaneously uptake hydrogen fuel, making it potentially reversible. This finding is part of the Grand Challenge Project to develop new materials for hydrogen storage.
Researchers have developed porous support materials that can withstand the rigors of high-temperature reforming of hydrocarbon fuels. The new materials satisfy all three key requirements for a catalyst support: high surface area, stability at high temperatures, and low pressure drop.
Researchers at Argonne National Laboratory have developed a new type of hydrogen sensor that shows rapid and reversible responses to hydrogen gas. The sensors use a discontinuous palladium thin film on a glass slide coated with a self-assembled monolayer, resulting in faster response times and increased sensitivity.
Researchers at PNNL have developed a new solid chemical material that can release hydrogen almost 100 times faster than conventional methods. The nanophase material achieves this high rate of hydrogen release at a lower temperature, making it an attractive option for sustainable hydrogen storage.
Researchers found that ceria nanoparticles with zirconium and gold improve oxygen storage and release, leading to more efficient catalytic converters. This technology holds promise for a cleaner future.
A recent study found that eating sug-free traditional yoghurt can decrease volatile sulfide compounds in the mouth by 80% after six weeks. The results also showed lower plaque and gingival indices in yoghurt-eating volunteers compared to non-yoghurt-eating groups with bad breath.
Researchers found a three-fold increase in suicide rates in two Salisbury, N.C., neighborhoods downwind of an asphalt terminal. Hydrogen sulfide levels were significantly higher than the World Health Organization's recommended standard, and exposure to other neurotoxic compounds may also be contributing factors.
Researchers propose new experimental measurements to verify existence of maximum melting temperature and transformation of solid molecular hydrogen to metallic liquid. Calculations predict quantum fluid at around 4 million atmospheres of pressure, contradicting intuitive expectations.
A new energy source harnessing solar power could revolutionize the way we generate electricity, offering a cheap, clean, and abundant alternative to traditional fossil fuels. The technology uses special titanium oxide ceramics to split water into hydrogen fuel, producing only oxygen and water as by-products.
Researchers developed self-cleaning hydrogen sensors using titania nanotubes that can recover from contamination by exposing them to ultraviolet light. The sensors' photocatalytic properties allow for efficient removal of contaminants, enabling real-world applications with minimal sensor error.
Researchers using European Southern Observatory's Very Large Telescope discovered a unique type Ia supernova that exploded within a flat, dense disk of dust and gas. The findings suggest that this and other precursors resemble protoplanetary nebulae, which may indicate wide differences among their progenitors.
Imperial College London researchers have discovered the detailed mechanism of the photosynthetic water-splitting reaction, enabling the potential for industrial-scale hydrogen production. This breakthrough could provide a promising alternative to fossil fuels and address global energy demands.
Researchers at the University of Chicago have developed a new method to store hydrogen fuel, using icy materials that require less stringent temperature and pressure conditions. The discovery could help explain how hydrogen is incorporated in planetary bodies and potentially power cars.
A team of researchers has discovered twenty gassy galaxies with vast discs of hydrogen weighing over a billion suns. The galaxies have few stars, and scientists are unsure why they haven't transformed their gas into stars like other galaxies.
Scientists at UC Riverside have modified an existing full-scale chemical scrubber to a biological trickling filter, achieving treatment rates comparable to chemical scrubbers. The conversion resulted in annual savings of $30,000 per year, with potential for widespread adoption and significant cost benefits.
The discovery reveals free water, loosely bound water, and tightly bound water, each influencing the process's speed and efficiency. The findings have significant implications for fuel cell development and potential improvements in hydrogen production.
Researchers at UCLA have created a new method for producing carbon nanoscrolls, which can be made at room temperature and offer significant advantages over traditional carbon nanotubes. This breakthrough could lead to improved hydrogen storage, enabling the development of pollution-free, hydrogen-powered cars.
A team from Los Alamos National Laboratory has mapped the hydrogen distribution on Mars, indicating significant water reserves near the surface and subsurface. The findings suggest that Mars could support future human exploration with its extensive water resources.
The research found that Helicobacter pylori can use hydrogen as an energy source, increasing its colonization in mice. The study showed that mice stomachs contained sufficient hydrogen to support the growth of H. pylori.
Researchers establish superconductivity in lithium at pressures greater than 30 GPa, with critical temperatures ranging from 9 K to 16 K. This finding contradicts theory and sparks interest in searching for high-temperature superconductivity in light element compounds.
Researchers found that fructose intolerance causes abnormal hydrogen gas in breath and gastrointestinal symptoms like bloating and diarrhea. A low-fructose diet or antibiotic therapy may be recommended for symptomatic patients.
Researchers at Penn State have developed a system to remove hydrogen odorant using adsorbers, enabling the use of pure hydrogen in fuel cells. The system also addresses hydrogen storage concerns by utilizing a metal hydride system based on magnesium, which is stable up to 554 degrees Fahrenheit.
Researchers have found a way to use a single photon to initiate the transfer of two electrons in a photochemical reaction, offering greater efficiency. The long-lived charge separation appears to last for several minutes, which is longer than usual.
Researchers have found evidence of turbulence and thick gas in the Magellanic Stream, a vast river of hydrogen flowing into the Milky Way galaxy. This discovery could provide new insights into cosmic cloud and star formation processes, as well as the billion-year evolution of galaxies.
The University of Pennsylvania team has developed a fuel cell that can run directly on liquid diesel, sidestepping the need to reform fuels into hydrogen. This breakthrough could enable wider adoption of fuel cells in transportation and other applications, offering a cleaner alternative to traditional energy sources.
The W49 cluster is believed to contain approximately 100 type O stars, the hottest and most massive stars in our galaxy, all less than 1 million years old. This young star cluster is part of a larger birthing process that will eventually lead to globular clusters like those orbiting the Milky Way.
A new study by Dr. Laurie A. Leshin found that the crust of Mars may hold two to three times more water than scientists had previously believed. The research compares the amount of deuterium in a meteorite with the Martian atmosphere, suggesting that significant groundwater reservoirs currently exist on the planet.
Chemical engineers at the University of Illinois are developing carbon-based sorbents to remove hydrogen sulfide from coal-gas streams, increasing efficiency and reducing greenhouse gas emissions. The new materials can effectively capture hydrogen sulfide and convert it into valuable byproducts.
Researchers suggest comets consist of same material that formed stars, potentially delivering organic matter to Earth. The detection of hydrogen isocyanide in Comet Hyakutake supports the idea that interstellar gases were incorporated into comet nuclei.