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General Science / Chemistry news 1234

New clues to how proteins dissolve and crystallize

May 12, 2008 | User rating: 4.8 / 5 after 11 vote(s) | User comments: 1

In the late 19th century the Czech scientist Franz Hofmeister observed that some salts (ionic compounds) aided the solution of proteins in egg white, some caused the proteins to destabilize and precipitate, ...


Genetically engineered blood protein can be used to split water into oxygen and hydrogen

December 01, 2006 | User rating: 4.8 / 5 after 166 vote(s) | No comments yet

Scientists have combined two molecules that occur naturally in blood to engineer a molecular complex that uses solar energy to split water into hydrogen and oxygen, says research published today in the Journal ...


Bacterium takes a shine to metals

June 16, 2006 | User rating: 4.8 / 5 after 21 vote(s) | No comments yet

Exposed metal surfaces are highly vulnerable to corrosion, but paint or other protective coatings can interfere with some uses, as well as add significant costs. Now, a comprehensive series of experiments suggests ...


Discovery alters longstanding concept of fixed protein structure

March 17, 2008 | User rating: 4.8 / 5 after 21 vote(s) | No comments yet

The thousands of proteins found in nature are simply strings of amino acids, assembled by genes, and scientists have long believed that they automatically fold themselves into uniquely fixed, 3-dimensional shapes to fire ...


Warming up for Magnetic Resonance Imaging

May 08, 2008 | User rating: 4.8 / 5 after 21 vote(s) | User comments: 1

Standard magnetic resonance imaging, MRI, is a superb diagnostic tool but one that suffers from low sensitivity, requiring patients to remain motionless for long periods of time inside noisy, claustrophobic ...


Comprehensive model is first to map protein folding at atomic level

November 06, 2006 | User rating: 4.8 / 5 after 47 vote(s) | No comments yet

Scientists at Harvard University have developed a computer model that, for the first time, can fully map and predict how small proteins fold into three-dimensional, biologically active shapes. The work could help researchers ...


'Retrospective rubber' remembers its old identities

December 12, 2007 | User rating: 4.8 / 5 after 10 vote(s) | No comments yet

Researchers at the University of Rochester have developed a shape-memory rubber that may enable applications as diverse as biomedical implants, conformal face-masks, self-sealing sutures, and “smart” labels.


Scientists discover new way to make water

October 31, 2007 | User rating: 4.8 / 5 after 71 vote(s) | No comments yet

In a familiar high-school chemistry demonstration, an instructor first uses electricity to split liquid water into its constituent gases, hydrogen and oxygen. Then, by combining the two gases and igniting them with a spark, ...


Investigating the failure mechanisms of fuel cells will improve their durability

November 28, 2007 | User rating: 4.8 / 5 after 14 vote(s) | User comments: 1

Fuel cells can be expensive and they typically don’t last as long as their internal combustion counterparts.


Researchers use bacteria to reduce uranium to safe levels

May 19, 2006 | User rating: 4.8 / 5 after 55 vote(s) | No comments yet

While the Cold War ended decades ago, its legacy will live for centuries in toxic waste. In remote corners of the country from Tennessee to the Pacific Northwest, dozens of federal laboratories struggle to ...


Sticky mussels inspire biomedical engineer yet again

October 18, 2007 | User rating: 4.8 / 5 after 22 vote(s) | No comments yet

Mussels are delicious when cooked in a white wine broth, but they also have two other well-known qualities before they’re put in a pot: they stick to virtually all inorganic and organic surfaces, and they stick with amazing ...


New insights into how natural antioxidants fight fat

November 05, 2007 | User rating: 4.8 / 5 after 13 vote(s) | No comments yet

Scientists in Taiwan are reporting new insights into why diets rich in fruits and vegetables reduce the risk of obesity. Their study, scheduled for the Oct. 17 (current) issue of ACS’ Journal of Agricultural ...


Chemists forge a new form of iron

June 01, 2006 | User rating: 4.8 / 5 after 54 vote(s) | No comments yet

An international team of chemists has discovered a new and unexpected form of iron, a finding that adds to the fundamental understanding of an element that is among the most abundant on Earth and that, in nature, ...


Taxol bristle ball: a wrench in the works for cancer

September 12, 2007 | User rating: 4.8 / 5 after 33 vote(s) | No comments yet

Rice University chemists have discovered a way to load dozens of molecules of the anti-cancer drug paclitaxel onto tiny gold spheres. The result is a tiny ball, many times smaller than a living cell that literally ...


Mobile metal atoms

January 03, 2008 | User rating: 4.8 / 5 after 8 vote(s) | No comments yet

Mobile phones, notebook computers, iPods—the boom in portable computing and communications devices is dependent on rechargeable lithium-ion batteries to deliver power. These batteries offer the highest energy density, allow ...


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