Daily News chosen by Anchor Science
Updated: 03-February-2012, 11:13
Announced on 02-01-2012 :
DOI: 10.1021/jp209024r
DOI: 10.1021/jp210123q
DOI: 10.1021/jp211537m
DOI: 10.1021/jp210824e
DOI: 10.1021/jp210265d
DOI: 10.1021/jp211034y
DOI: 10.1021/jp2113126
DOI: 10.1021/jp211429f
DOI: 10.1021/jp211526h
DOI: 10.1021/jp211736e
DOI: 10.1021/ac202672x
DNA motor navigates network of DNA tracks
Scientists at Kyoto University and the University of Oxford have combined DNA origami and DNA motors to take another step toward programmed artificial molecular assembly lines.
Skin cells turned into neural precusors, bypassing stem-cell stage
Mouse skin cells can be converted directly into cells that become the three main parts of the nervous system, according to researchers. The finding is an extension of a previous study by the same group showing that mouse and human skin cells can be directly converted into functional neurons.
Mom's love good for child's brain
School-age children whose mothers nurtured them early in life have brains with a larger hippocampus, a key structure important to learning, memory and response to stress. The new research, by child psychiatrists and neuroscientists, is the first to show that changes in this critical region of children’s brain anatomy are linked to a mother’s nurturing.
Golf course weeds are developing resistance to the herbicide glyphosate
If your golf game isn’t up to par, you may be able to blame it on those tufts of weeds on the course. Annual bluegrass is a problematic winter weed on many U.S. golf courses. After years of management with the herbicide glyphosate, resistant biotypes of this weed have developed, which will make keeping a clean fairway more challenging.
NASA's THEMIS satellite sees a great electron escape
When scientists discovered two great swaths of radiation encircling Earth in the 1950s, it spawned over-the-top fears about "killer electrons" and space radiation effects on Earthlings. The fears were soon quieted: the radiation doesn't reach Earth, though it can affect satellites and humans moving through the belts. Nevertheless, many mysteries about the belts -- now known as the Van Allen Radiation belts -- remain to this day.
Glimpses of the interstellar material beyond our solar system
A great magnetic bubble surrounds the solar system as it cruises through the galaxy. The sun pumps the inside of the bubble full of solar particles that stream out to the edge until they collide with the material that fills the rest of the galaxy, at a complex boundary called the heliosheath. On the other side of the boundary, electrically charged particles from the galactic wind blow by, but rebound off the heliosheath, never to enter the solar system. Neutral particles, on the other hand, are a different story. They saunter across the boundary as if it weren't there, continuing on another 7.5 billion miles for 30 years until they get caught by the sun's gravity, and sling shot around the star.
'Your password is invalid': Improving website password practices
Internet users are increasingly asked to register with a user name and password before being able to access the content of many sites. Researchers have now identified impediments to efficient password creation and provided design strategies for enhancing the user experience.
Risk-based passenger screening could make air travel safer
Intensive screening of all airline passengers actually makes the system less secure by overtaxing security resources, while risk-based methods increase overall security, according to new research. The researchers developed three algorithms dealing with risk uncertainty in the passenger population. Then, they ran simulations to demonstrate how their algorithms could estimate risk in the overall passenger population and how errors in this estimation procedure can be mitigated to reduce the risk to the overall system.
Ultra-fast photodetector and terahertz generator
Photodetectors made from graphene can process and conduct light signals as well as electric signals extremely fast. Within picoseconds the optical stimulation of graphene generates a photocurrent. Until now, none of the available methods were fast enough to measure these processes in graphene. Scientists have now developed a method to measure the temporal dynamics of this photo current. Furthermore they discovered that graphene can emit terahertz radiation.
IBEX spacecraft measures 'alien' particles from outside solar system
Using data from NASA's Interstellar Boundary Explorer spacecraft, an international team of researchers has measured neutral "alien" particles entering our solar system from interstellar space. A suite of studies provides a first look at the constituents of the interstellar medium, the matter between star systems, and how they interact with our heliosphere.
Volunteers clear tiger snares in China
Volunteers working in northeast China have cleared 162 illegal wire snares in an ongoing effort to protect the nation’s remaining population of critically endangered Amur (Siberian) tigers.
New genetic subtype of lung cancer defined
Investigators have defined the role of a recently identified gene abnormality – rearrangements in the ROS1 gene – in a deadly form of lung cancer. ROS1-rearranged tumors represent one to two percent of non-small-cell lung cancers, the leading cause of cancer death in the US. The researchers also show that ROS1-driven tumors can be treated with crizotinib and describe the remarkable response of one patient to crizotinib treatment.
Five US urban counties lead 'Terror Hot Spots' list, but rural areas not exempt
Five urban counties lead the list of US terror "hot spots" - Manhattan, LA, Miami-Dade, San Francisco and Washington, DC - though smaller, more rural areas have emerged as hot spots in their own right in recent years with an increase in domestic terror there, says new research. The researchers identified 65 of the nation's 3,143 counties as "hot spots" of terrorism.