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Team solves a protein complex's molecular structure to explain its role in gene silencing

A cell's genome maintains its integrity by organizing some of its regions into a super-compressed form of DNA called heterochromatin. In the comparatively simple organism fission yeast, a cellular phenomenon known as RNA interference (RNAi) plays an essential role in assembling heterochromatin, which keeps the compressed DNA in an inactive or "silent" state. Central to t

Biochemistry | Source: Cold Spring Harbor Laboratory | Views: 119 | Comments: 0
Researchers gain insight into 100-year-old Haber-Bbosch process

For the past 100 years, the Haber-Bosch process has been used to convert atmospheric nitrogen into ammonia, which is essential in the manufacture of fertilizer. Despite the longstanding reliability of the process, scientists have had little understanding of how it actually works. But now a team of chemists, led by Patrick Holland of the University of Rochester, has new insight into how the ammonia

Chemistry | Source: University of Rochester | Views: 110 | Comments: 0
Video: Using light, researchers convert 2-D patterns into 3-D objects

Researchers from North Carolina State University have developed a simple way to convert two-dimensional patterns into three-dimensional (3-D) objects using only light.

Materials Science | Source: North Carolina State University | Views: 264 | Comments: 0
Flexible rack systems sort molecules

Enantiomers are pairs of molecules built in a mirror-inverted manner. They differ from each other like a left and a right glove. This property of the molecules that is referred to as chirality is of particular relevance to biosciences and pharmaceutics.

Chemistry | Source: Helmholtz Association of German Research Centres | Views: 120 | Comments: 0
Scientists discover how to design drugs that could target particular nerve cells

The future of drug design lies in developing therapies that can target specific cellular processes without causing adverse reactions in other areas of the nervous system. Scientists at the Universities of Bristol and Liège in Belgium have discovered how to design drugs to target specific areas of the brain.

Chemistry | Source: University of Bristol | Views: 105 | Comments: 0
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Scientists discover how to design drugs that could target particular nerve cells

The future of drug design lies in developing therapies that can target specific cellular processes without causing adverse reactions in other areas of the nervous system. Scientists at the Universities of Bristol and Liège in Belgium have discovered how to design drugs to target specific areas of the brain.

Chemistry | Source: University of Bristol | Views: 105 | Comments: 0
Researching graphene nanoelectronics for a post-silicon world

Copper's days are numbered, and a new study at Rensselaer Polytechnic Institute could hasten the downfall of the ubiquitous metal in smart phones, tablet computers, and nearly all electronics. This is good news for technophiles who are seeking smaller, faster devices.

Materials Science | Source: Rensselaer Polytechnic Institute | Views: 575 | Comments: 0
Video: International team to drill beneath massive Antarctic ice shelf

An international team of researchers funded by NASA and the National Science Foundation (NSF) will travel next month to one of Antarctica's most active, remote and harsh spots to determine how changes in the waters circulating under an active ice sheet are causing a glacier to accelerate and drain into the sea.

Geology | Source: NASA/Goddard Space Flight Center | Views: 140 | Comments: 0
Was the Real Discovery of the Expanding Universe Lost in Translation?

The greatest astronomical discovery of the 20th century may have been credited to the wrong person. But it turns out to have been nobody's fault except for that of the actual original discoverer himself.

Physics | Source: Newswise | Views: 314 | Comments: 0
Physicists chip away at mystery of antimatter imbalance

Why there is stuff in the universe—more properly, why there is an imbalance between matter and antimatter—is one of the long-standing mysteries of cosmology. A team of researchers working at the NIST has just concluded a 10-year-long study of the fate of neutrons in an attempt to resolve the question, the most sensitive such measurement ever made.

Physics | Source: National Institute of Standards and Technology (NIST) | Views: 402 | Comments: 0
NASA develops super-black material that absorbs light across multiple wavelength bands

NASA engineers have produced a material that absorbs on average more than 99 percent of the ultraviolet, visible, infrared, and far-infrared light that hits it -- a development that promises to open new frontiers in space technology.

Materials Science | Source: NASA/Goddard Space Flight Center | Views: 357 | Comments: 0
New metamaterial allows transmission gain while retaining negative refraction property

A new type of active metamaterial that incorporates semiconductor devices into conventional metamaterial structures is demonstrating an ability to have power gain while retaining its negative refraction property, a first in the world of metamaterials research.

Materials Science | Source: University of Arizona College of Engineering | Views: 116 | Comments: 0
Long-Term carbon storage in Ganges basin may portend global warming worsening

Woods Hole Oceanographic Institution (WHOI) scientists have found that carbon is stored in the soils and sediments of the Ganges-Brahmaputra basin for a surprisingly long time, making it likely that global warming could destabilize the pool of carbon there and in similar places on Earth, potentially increasing the rate of CO2 release into the atmosphere.

Geology | Source: Woods Hole Oceanographic Institution | Views: 101 | Comments: 0
Nanowires could be solution for high performance solar cells

Tiny wires could help engineers realize high-performance solar cells and other electronics, according to University of Illinois researchers.

Materials Science | Source: University of Illinois at Urbana-Champaign | Views: 135 | Comments: 0
Shoe strings and egg openers

Photosynthesis is one of the most important biological processes. However, it is less efficient in plants than it could be. Red algae, in contrast, use a slightly different mechanism and are thus more productive. Scientists from the Max Planck Institute of Biochemistry (MPIB) in Martinsried near Munich, Germany, have now identified a so far unknown helper protein for photosynthesis in red algae.

Biochemistry | Source: Max-Planck-Gesellschaft | Views: 55 | Comments: 0
Can metals remember their shape at nanoscale, too?

University of Constance physicists Daniel Mutter and Peter Nielaba have visualized changes in shape memory materials down to the nanometric scale in an article about to be published in EPJ B¹.

Materials Science | Source: Springer | Views: 81 | Comments: 0
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