Latest chemical reactions Stories

2009-10-22 14:37:15

Guy Bertrand's lab shows metal-free 'abnormal N-heterocyclic carbenes' are stable, allowing their use in numerous catalytic chemical reactions Researchers at the University of California, Riverside have successfully created in the laboratory a class of carbenes, highly reactive molecules, used to make catalysts "“ substances that facilitate chemical reactions. Until now, chemists believed these carbenes, called "abnormal N-heterocyclic carbenes" or aNHCs, were impossible to make....

2009-08-03 11:55:00

Flasks, beakers and hot plates may soon be a thing of the past in chemistry labs. Instead of handling a few experiments on a bench top, scientists may simply pop a microchip into a computer and instantly run thousands of chemical reactions, with results "” literally shrinking the lab down to the size of a thumbnail.Toward that end, UCLA researchers have developed technology to perform more than a thousand chemical reactions at once on a stamp-size, PC-controlled microchip, which could...

2009-04-08 12:34:01

Dutch scientists say they have developed a new way of starting chemical reactions, using mechanical forces to control the catalytic activity. Eindhoven University of Technology researchers say their new technology paves the way to developing materials capable of repairing themselves under the influence of mechanical tension. The scientists -- Alessio Piermattei, Karthik Sivasubramanian and Professor Rint Sijbesma -- said they are the first to demonstrate a catalyst can be switched from a...

2009-04-06 14:47:55

Researchers at Eindhoven University of Technology (TU/e) have developed an entirely new method for starting chemical reactions. For the first time they used mechanical forces to control catalytic activity "“ one of the most fundamental concepts in chemistry. This allowed them to initiate chemical reactions with mechanical force. This discovery paves the way to developing materials capable of repairing themselves under the influence of mechanical tension. The results of their research...

2008-11-21 08:30:00

Futuristic devices would likely outperform conventional computers in chemical simulations Quantum computers would likely outperform conventional computers in simulating chemical reactions involving more than four atoms, according to scientists at Harvard University, the Massachusetts Institute of Technology, and Haverford College. Such improved ability to model and predict complex chemical reactions could revolutionize drug design and materials science, among other fields. Writing in the...

2008-07-14 18:00:31

PRINCETON, N.J., July 14 /PRNewswire/ -- Informex has launched Informex365.com, a new web portal for manufacturers that require service and support in chemical reactions commonly used in the production of pharmaceuticals, bio-technology products, industrial products and higher-value chemicals. The all-new website offers manufacturers instant access to the companies that can best support projects based on Acetylation reactions, Coupling reactions, Cryogenic reactions and nearly 200 other...

2008-05-16 06:00:34

By Napolitano, Alessandra De Lucia, Maria; Panzella, Lucia; d'Ischia, Marco ABSTRACT The characteristic absorption and photochemical properties of pheomelanins are generally attributed to "benzothiazine" structural units derived biogenetically from 5-S- cysteinyldopa. This notion, however, conveys little or no information about the structural chromophores responsible for the photoreactivity of pheomelanins. At pH 7.4, natural and synthetic pheomelanins show a defined maximum around 305 nm,...

2008-03-25 14:40:14

Jlich scientists synthesize stable catalyst for water oxidationJlich scientists have made an important step on the long road to artificially mimicking photosynthesis. They were able to synthesize a stable inorganic metal oxide cluster, which enables the fast and effective oxidation of water to oxygen. This is reported by the German high-impact journal "Angewandte Chemie" in a publication rated as a VIP ("very important paper"). Artificial photosynthesis may decisively contribute to solving...

2008-03-24 14:15:00

Scientists succeed in designing artificial enzymes that also undergo 'evolution in a test tube'Mankind triumphed in a recent 'competition' against nature when scientists succeeded in creating a new type of enzyme for a reaction for which no naturally occurring enzyme has evolved. This achievement opens the door to the development of a variety of potential applications in medicine and industry. Enzymes are, without a doubt, a valuable model for understanding the intricate works of nature....

2008-03-19 15:13:50

A new type of membrane based on tiny iron particles appears to address one of the major limitations exhibited by current power-generating fuel cell technology.While there are many types of fuel cells, in general they generate electricity as the result of chemical reactions between an external fuel -- most commonly hydrogen -- and an agent that reacts with it. The membrane that separates the two parts of the cell and facilitates the reaction is a key factor in determining the efficiency of the...

Latest chemical reactions Reference Libraries

2014-01-12 00:00:00

Chemistry is a physical science concerned with the composition, structure, and properties of matter. It also deals with the changes that matter undergoes during chemical reactions. It incorporates the studies of various atoms, molecules, crystals and other aggregates which can be combined or isolated and concepts of energy and entropy through which chemical processes occur. Modern chemistry (from the Egyptian kēme, meaning "earth") evolved from alchemy following the chemical revolution...

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  • A beast of burden; also, a beast in general.
'Jument' ultimately comes from the Latin 'jugum,' yoke.