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Hydrogen in Biological News

Stuff of stink bombs investigated for role in pregnancy

... role in the human reproductive system. hydrogen sulphide partially responsible for the foul odour ... research at the First International Conference on hydrogen Sulphide in Biology and Medicine in Shanghai, ... gathering over the last ten years that the gas hydrogen sulphide has a signalling role in the ....

Accolade for solar-hydrogen project

... A research project that aims to produce hydrogen on an environmentally friendly and cost-effective ... award. The new process of producing 'green' hydrogen uses three abundant and renewable sources ... Sweden, Greece, USA, Australia and Germany. hydrogen has huge potential as an environmentally clean ...

Synthetic catalyst mimics nature's 'hydrogen economy'

... a catalyst that acts like nature's most pervasive hydrogen processor. The researchers describe their work ... and nickel-iron hydrogenase function as hydrogen processors, much like platinum. "Nature relies ... of the catalytic site to include the substrate hydrogen atom." The researchers' model of the ...

Scientists work to plug microorganisms into the energy grid

... researchers are also looking at producing hydrogen from renewable resources. Donohue's lab is ... sphaeroides that use photosynthesis to produce hydrogen from a combination of cellulosic feedstocks and sunlight. The hydrogen can then converted to electricity using fuel ...

Progress toward artificial tissue?

... example, the researchers were able to produce a hydrogen peroxide sensor. The carbon nanotubes catalyze the oxidation of hydrogen peroxide, which results in a measurable current. hydrogen peroxide plays a role in normal heart function ...

DOE funds bio-inspired solar fuel center at Arizona State

... to convert water cheaply and efficiently into hydrogen fuel and oxygen. Society requires a renewable ... of solar energy to produce a clean fuel such as hydrogen is essentially the only process that can satisfy ... to oxidize water (producing oxygen gas) and make hydrogen or other fuels. "This project demonstrates the ...

Breaking the ties that bind: New hope for biomass fuels

... into sheets. The sheets are held together by hydrogen bondsan electrostatic attraction of a positive ... other types of attractions that are weaker than hydrogen bonds. The plant then spins these sheets into ... cellulose generally has a well-ordered network of hydrogen bonds holding it together, the material also ...

Diet secrets of 'the Royals'

... they may run into a reproductive wall." hydrogen and Oxygen: A Record of Dry Times and Rainy Seasons Water is made of hydrogen and oxygen, so ratios of rare hydrogen-2 ... isotope composition of their hair," he adds. The hydrogen isotope ratio in elephant tail hair drops when ...

Weizmann Institute scientists develop a unique approach for splitting water into hydrogen and oxygen

... of efficient systems for splitting water into hydrogen and oxygen, driven by sunlight is among the most ... today, underpinning the long term potential of hydrogen as a clean, sustainable fuel. But man-made ... of reactions, which leads to the liberation of hydrogen and oxygen in consecutive thermal- and ...

American Chemical Society Weekly PressPac -- April 1, 2009

... tried for years to find a material to optimize hydrogen storage in futuristic fuel cell vehicles. Despite ... researchers have been unable to meet the hydrogen storage goals proposed by the U.S. Department of Energy (DOE) for hydrogen fuel cell vehicles, they state. They describe ...

Covering the bases: Quantum effect may hold promise for low-cost DNA sequencing, sensor applications

... complementary DNA base pairs, evaluating the hydrogen bonds formed between them. Base pairing rules for DNA dictate that the hydrogen bonds work to join up appropriate nucleotide ... complementary mateembedded in the substrate, the hydrogen bonds stick the bases together and they attach, ...

Water acts as catalyst in explosives

... of high explosives made up of oxygen and hydrogen produce water at thousands of degrees Kelvin and ... the team discovered that in water, when one hydrogen atom serves as a reducer and the hydroxide (OH) ... you'd find in the interior of a planet, the hydrogen of a water molecule starts to move around very ...

Dancing 'adatoms' help chemists understand how water molecules split

... understanding of the chemistry needed to generate hydrogen fuel from water or to clean contaminated water. ... oxygen are central to such varied processes as hydrogen production, breaking down pollutants, and in ... titanium dioxide as a way to split water into its hydrogen and oxygen pieces, researchers can use a ...

Revealing new applications for carbon nanomaterials in hydrogen storage

... future. Research into safe and efficient means of hydrogen production, storage, and use is essential to make ... are showing interest in using solid state hydrogen storage materials, e.g. NaAlH4, as new energy ... sodium alanate, which is a popular material for hydrogen storage studies. "Now that the catalytic ...

Story tips from the Departments of Energy's Oak Ridge National Lab -- March 2009

... 576-0226; wallira@ornl.gov ] ENERGY -- hydrogen shake . . . hydrogen for transportation may have received a boost with ... that converts cellulosic materials and water into hydrogen fuel. A team of researchers from Virginia Tech, ...

No longer a gray area: Our hair bleaches itself as we grow older

... it. Going gray is caused by a massive build up of hydrogen peroxide due to wear and tear of our hair ... "Not only blondes change their hair color with hydrogen peroxide," said Gerald Weissmann, MD, ... . "All of our hair cells make a tiny bit of hydrogen peroxide, but as we get older, this little bit ...

Texas researchers provide emissions data for livestock industry

... Protection Agency to begin reporting ammonia and hydrogen sulfide emissions. The EPA issued a final ... that can emit 100 pounds or more of ammonia or hydrogen sulfide during any 24-hour period, Weinheimer ... otherwise." Casey and Parker aggregated hydrogen sulfide field data for the reporting process. ...

Structure of enzyme against chemical warfare agents determined

... neutrons are able to locate the positions of hydrogen atoms, which make up half of all atoms in ... similar manner. Yet despite being so widespread, hydrogen atoms in proteins are quite elusive. As X-rays ... the electron cloud around an atomic nucleus, hydrogen atoms, with only one electron, are normally ...

Our microbes, ourselves

... bacteria known as prevotellaceae. Further, such hydrogen producers appear to coexist with ... weight and gastric bypass samples. Unlike the hydrogen producers, however, these methane-liberating hydrogen consumers are not bacteria. They belong instead ...

Heavy pyridine crystallizes differently

... in German . The nuclei of ordinary hydrogen atoms contain only a single proton. If a neutron is added, the hydrogen becomes deuterium. In principle, molecules that contain deuterium in place of hydrogen atoms are chemically identical. However, there ...

Hydrogen tank lighter than battery

... brings us a step closer to the everyday use of hydrogen as a source of fuel for powering vehicles. A hydrogen 'tank' using this alloy would have a relative ... Southampton has shown considerable interest. hydrogen is considered to be a clean and therefore ...

Fuels of the future may come from 'ice that burns,' water and sunshine

... efforts to split water molecules into hydrogen and oxygen in order to produce clean-burning hydrogen fuel. The podcast also highlights how scientists ... that can cheaply and efficiently split water into hydrogen and oxygen. The development could lead to cars ...

University success at national engineering awards

... Colin Snape's work on the scientific process of hydrogen pyrolysis, in collaboration with Engineering ... year's Business Support of Universities Award. hydrogen pyrolysis also known as HyPy was a method ... used to liquefy large quantities of coal. It uses hydrogen at a very high pressure (15MPa) and a temperature ...

American Chemical Society's Weekly PressPac

... New material could speed development of hydrogen powered vehicles Nano Letters Researchers ... U.S. Department of Energy (DOE) 2010 goals for hydrogen storage and could help eliminate a key roadblock ... ways of using carbon nanotubes (CNTs) to store hydrogen in fuel cell vehicles. CNTs are minute cylinders ...

The viability of hydrogen transportation markets: Chicken or egg?

... hydrogen may well be the new gasoline. But where's the ... and refuel your energy-efficient vehicle? Will hydrogen stations be strategically convenientlocated on ... development obstacles need to be overcome if hydrogen vehicles are ever to penetrate the transportation ...

Molecular cubes in the sunlight

... press release is also available in German . hydrogen will be one of the most important fuels of the future. It would be ideal to obtain hydrogen by splitting water instead of from petroleum. ... at the cathode, protons (positively charged hydrogen ions) are reduced to hydrogen, whereas at the ...

September Geology and GSA Today media highlights

... of mantle upwelling. Stable carbon and hydrogen isotopes from bat guano in the Grand Canyon, USA, ... a record of past climate and plant life. Stable hydrogen and carbon isotope values of guano reflect local ... and sulfidic, and previous work hypothesized that hydrogen sulfide release to the atmosphere could link the ...

A better way to make hydrogen from biofuels

... a way to convert ethanol and other biofuels into hydrogen very efficiently. A new catalyst makes hydrogen from ethanol with 90 percent yield, at a workable ... issues that need to be resolved before we can use hydrogen as fuel -- how to make it, how to transport it, ...

Candy-coating keeps proteins sweet

... or less. Their latest experiments center on the hydrogen bonding that makes the sugars rigid. They have ... be used for routine formulation evaluation. hydrogen bonds are responsible for many of waters ... mostly of water, are also defined by their hydrogen bonds. Without these bonds, proteins would ...

New book tutors future presidents and public on science behind the headlines

... when President George W. Bush touted a future hydrogen economy in his State of the Union address, ... fact that there are many problems with the use of hydrogen as a transportation fuel. "There was nobody ... said. "I doubt that he knew, for example, that hydrogen is currently made from fossil fuels in a process ...

Strange molecule in the sky cleans acid rain, scientists discover

... What makes the molecule so unusual is its two hydrogen bonds, which are similar to those found in water. ... The cause of these strange behaviors are weak hydrogen bonds that hold water molecules together. The new atmospheric molecule has two hydrogen bonds, which allows it to form a six-sided ring ...

Scientists a step closer to producing fuel from bacteria

... Nostoc fixes nitrogen and, in doing so, releases hydrogen that can then potentially be used as fuel. Fixing ... lead to understanding and improvement of the hydrogen production mechanism of these bacteria. It will ... step for us will be further investigation into hydrogen production, as well as constructing more ...

Water refineries?

... glass of water. Because oxygen and hydrogen are energy-rich fuels, many researchers have ... process pick up electrons and convert back into hydrogen at a partner electrode. Nocera and Kanan also ... For direct conversion of solar energy into hydrogen and oxygen, researchers will need to study the ...

Tips from the Journals of the American Society for Microbiology

... Blue Light and hydrogen Peroxide May Effectively Treat Biofilms That ... used by dentists to cure resin fillings and hydrogen peroxide (H 2 O 2 ) combined may be capable of ... seconds while in the presence of 3 to 300 mM of hydrogen peroxide. Microbial counts from each treated ...

Closing the hydrogen economic loop

... and now hybrid gas-electric cars believes the hydrogen economy is already upon us. In a paper ... issue of the International Journal of Nuclear hydrogen Production and Applications , Stanford Ovshinsky, ... that we already have the means for making the hydrogen economy realistic. ...

Fair trade

... (CH2Cl2) to exchange one chlorine atom for a hydrogen atom, forming nearly 100 % of the desired CHCl3. ... weakly adsorbed species. CH2Cl2 swaps one of its hydrogen atoms for one such weakly bound chlorine atom. It leaves behind the hydrogen atom, which is in turn weakly adsorbed to the ...

MIT creates new material for fuel cells

... cells get their energy from an external source of hydrogen fuel, while conventional batteries draw from a ... used as the fuel and reforming of alcohol down to hydrogen is not required. Such a fuel cell is attractive ... liquid, it is easier to store and transport than hydrogen gas, and is safer (it won't explode). Methanol ...

Power from formic acid

... energy to our society. In this context, hydrogen technology has taken on increased importance. ... now succeeded in the controlled extraction of hydrogen from formic acidwithout the need for the ... reforming process usually involved in other hydrogen generation systems. As they report in the journal ...

More efficient fuel-cells, thanks to a new catalyst

... Most current research is focused on hydrogen cells the biggest advantage of which is that they ... water vapour as the only waste product. However, hydrogen is very expensive, both in producing it and in ... same energy from a similar amount of fuel, the hydrogen has to be kept and stored under conditions of ...

Scientists aim to boost world energy supplies -- with microbes!

... called Syntrophus digest the oil and produce hydrogen gas and acetic acid (the pungent ingredient of ... a type of organism known as archaea, combine the hydrogen with carbon dioxide to produce methane. The ... the technology could also be used to produce hydrogen gas from inaccessible oil reserves, he said. ...
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