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Goods manufactured in China aren’t good for the environment

September 29, 2015 7:44 am | by Brian Bell, Univ. of California, Irvine | Comments

In a study published in Nature Climate Change, scientists from three universities show that products made in China are associated with significantly higher carbon dioxide emissions than the same products made elsewhere.


A new single-molecule tool to observe enzymes at work

September 29, 2015 7:37 am | by James Urton, Univ. of Washington | Comments

A team of scientists at the Univ. of Washington and the biotechnology company Illumina have created an innovative tool to directly detect the delicate, single-molecule interactions between DNA and enzymatic proteins. Their approach provides a new platform to view and record these nanoscale interactions in real time.


Researchers create first entropy-stabilized complex oxide alloys

September 29, 2015 7:29 am | by Matt Shipman, News Services, North Carolina State Univ. | Comments

Researchers from North Carolina State Univ. and Duke Univ. have created the first entropy-stabilized alloy that incorporates oxides—and demonstrated conclusively that the crystalline structure of the material can be determined by disorder at the atomic scale rather than chemical bonding.


Milestone single-biomolecule imaging technique

September 28, 2015 3:00 pm | by Jason Socrates Bardi, American Institute of Physics | Comments

Knowing the detailed shape of biomolecules such as proteins is essential for biological studies and drug discovery. Modern structural biology relies on techniques such as NMR, x-ray crystallography and cryo-electron microscopy to discover the tiny structural details of biomolecules. All these methods, however, require averaging over a large number of molecules and thus structural details of an individual biomolecule are often lost.


A natural light switch

September 28, 2015 2:00 pm | by Peter Dizikes, MIT News Office | Comments

Massachusetts Institute of Technology scientists, working with colleagues in Spain, have discovered and mapped a light-sensing protein that uses vitamin B12 to perform key functions, including gene regulation. The result, derived from studying proteins from the bacterium Thermus thermophilus, involves at least two findings of broad interest.


How hunger neurons control bone mass

September 28, 2015 1:00 pm | by Karen N. Peart, Yale Univ. | Comments

In an advance that helps clarify the role of a cluster of neurons in the brain, Yale School of Medicine researchers have found that these neurons not only control hunger and appetite, but also regulate bone mass.


Finding a way to boost efficiency of CIGS solar cells

September 28, 2015 12:00 pm | by Toyohashi Univ. of Technology | Comments

CIGS solar cells are compound thin-film solar cells and the most established alternative to silicon solar cells. Solar conversion efficiencies of over 20% have recently been achieved in CIGS solar cells. One of the factors known to strongly affect the conversion efficiency is the buffer layer. However, the structure of the buffer layer and its precise influence on the conversion efficiency have not been clarified.


Researchers discover new mechanism of proteins to block HIV

September 28, 2015 11:00 am | by Jeff Sossamon, Univ. of Missouri-Columbia | Comments

There is little doubt that the human immunodeficiency virus, or HIV, is devastating. More than 1.2 million people in the U.S. are living with HIV, and more than 47,000 people are diagnosed annually. Now, Univ. of Missouri researchers have made a discovery in how specialized proteins can inhibit the virus, opening the door for progress in the fight against HIV and for the production of advanced therapeutics to combat the disease.


Road to supercapacitors for scrap tires

September 28, 2015 10:00 am | by Ron Walli, Oak Ridge National Laboratory | Comments

Some of the 300 million tires discarded each year in the U.S. alone could be used in supercapacitors for vehicles and the electric grid using a technology developed at the U.S. Dept. of Energy's Oak Ridge National Laboratory and Drexel Univ.


A different type of 2-D semiconductor

September 28, 2015 7:51 am | by Lynn Yarris, Lawrence Berkeley National Laboratory | Comments

To the growing list of 2-D semiconductors, such as graphene, boron nitride and molybdenum disulfide, whose unique electronic properties make them potential successors to silicon in future devices, you can now add hybrid organic-inorganic perovskites. However, unlike the other contenders, which are covalent semiconductors, these 2-D hybrid perovskites are ionic materials, which gives them special properties of their own.


Proposed standards for triboelectric nanogenerators could facilitate comparisons

September 28, 2015 7:43 am | by John Toon, Georgia Institute of Technology | Comments

More than 60 research groups worldwide are now developing variations of the triboelectric nanogenerator (TENG), which converts ambient mechanical energy into electricity for powering wearable electronics, sensor networks, implantable medical devices and other small systems.


Study adds to evidence that viruses are alive

September 28, 2015 7:35 am | by Diana Yates, Life Sciences Editor Univ. of Illinois, Urbana-Champaign | Comments

A new analysis supports the hypothesis that viruses are living entities that share a long evolutionary history with cells, researchers report. The study offers the first reliable method for tracing viral evolution back to a time when neither viruses nor cells existed in the forms recognized today, the researchers say.


Climate change consensus extends beyond climate scientists

September 28, 2015 7:28 am | by Natalie van Hoose, Purdue Univ. | Comments

A Purdue Univ.-led survey of nearly 700 scientists from nonclimate disciplines shows that more than 90% believe that average global temperatures are higher than pre-1800’s levels and that human activity has significantly contributed to the rise.


New system for human genome editing

September 28, 2015 7:21 am | by Broad Institute | Comments

A team including the scientist who first harnessed the CRISPR-Cas9 system for mammalian genome editing has now identified a different CRISPR system with the potential for even simpler and more precise genome engineering.


Gene test finds which breast cancer patients can skip chemo

September 28, 2015 2:01 am | by Marilynn Marchione, AP Chief Medical Writer, Associated Press | Comments

A new study finds that many women with early-stage breast cancer can skip chemotherapy without hurting their odds of beating the disease. The study shows the value of using a gene-activity test to gauge each patient's risk. The test accurately identified a group of women whose cancers are so likely to respond to hormone therapy that adding chemo would do little if any good.



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