Heavens

'Ultra-primitive' particles found in comet dust

Washington, D.C.—Dust samples collected by high-flying aircraft in the upper atmosphere have yielded an unexpectedly rich trove of relicts from the ancient cosmos, report scientists from the Carnegie Institution. The stratospheric dust includes minute grains that likely formed inside stars that lived and died long before the birth of our sun, as well as material from molecular clouds in interstellar space.

3-D system based on optical fiber could provide new options for photovoltaics

Converting sunlight to electricity might no longer mean large panels of photovoltaic cells atop flat surfaces like roofs.

Using zinc oxide nanostructures grown on optical fibers and coated with dye-sensitized solar cell materials, researchers at the Georgia Institute of Technology have developed a new type of three-dimensional photovoltaic system. The approach could allow PV systems to be hidden from view and located away from traditional locations such as rooftops.

Rare space experiment gives clues about the fundamental structure of the universe

A physics experiment using a super-fast explosion in a galaxy 7.3 billion light-years away has given scientists rare experimental evidence about the fundamental structure of space and time. The experiment was performed by a team that includes astrophysicists at Penn State University, who used NASA's Fermi Gamma Ray Space Telescope to study particles from the explosion moving at nearly the speed of light. The experiment confirmed aspects of Einstein's theories of gravity, which unite space and time in the concept of space-time.

Precise picture of early universe supports 'dark matter' theory, researchers say

A detailed picture of the seeds of structures in the universe has been unveiled by an international team co-led by a Cardiff University scientist.

The team has obtained extremely precise data about the early universe, using a telescope near the South Pole in the Antarctic.

Study lays foundation for more patient access to medical records

WINSTON-SALEM, N.C. – A new study by researchers at Wake Forest University School of Medicine suggests that many patients are dissatisfied with the way they receive results of radiology tests and want more access to information in their medical records, specifically, detailed, lay-language results from those tests.

Solar winds triggered by magnetic fields

Solar wind generated by the sun is probably driven by a process involving powerful magnetic fields, according to a new study led by UCL (University College London) researchers based on the latest observations from the Hinode satellite.

Ropes of plasma: onset and stagnation of 3-D magnetic reconnection

Magnetized plasmas occupy a large fraction of our cosmic universe; they exist on our sun, in the earth's magnetosphere, and in astrophysical plasmas. They also exist in laboratory magnetic fusion grade plasmas, and in other smaller experiments as well. Energy stored in stressed magnetic fields can produce large-scale explosive events that spontaneously evolve and energize particles, owing to unsteady and impulsive local processes in small volumes of space. The abrupt onset and cessation of these events in astrophysical and laboratory plasmas is a long-standing puzzle.

Extending treatment after liver transplant may benefit patients with hepatitis C recurrence

DETROIT – Extending hepatitis C treatment for liver transplant patients beyond current practice results in high rates of clearance of the hepatitis C virus from the blood, as well as a low rate of relapse, according to a Henry Ford Hospital study.

"We found that patients who achieved a sustained virological response were more likely to have had extended treatment," says Kimberly Brown, M.D., Division head of Gastroenterology at Henry Ford Hospital and senior author of the study.

Hepatitis B does not increase risk for pancreatic cancer

DETROIT – A Henry Ford Hospital study found that hepatitis B does not increase the risk for pancreatic cancer – and that only age is a contributing factor.

The results contradict a previous study in 2008 that suggested a link between pancreatic cancer and previous hepatitis B infection. Hepatitis B is an inflammation of the liver caused by a viral infection.

Study results will be presented at the American Association for the Study of Liver Diseases' Annual Meeting in Boston.

A special issue on the International Workshop of the 2008 Solar Total Eclipse

On August 1, 2008 a total solar eclipse was visible within a narrow corridor that traversed from North America to China. The path of the Moon's umbral shadow started from Canada and extended across northern Greenland, the Arctic, central Russia, Mongolia, and China. A partial eclipse was seen within the much broader path of the Moon's penumbral shadow, which included northeastern part of North America, most parts of Europe and Asia.

Travel may be hazardous to dialysis patients

If you're sick, traveling to a foreign land may boost your spirits, but jeopardize your health, according to a paper being presented at the American Society of Nephrology's 42nd Annual Meeting and Scientific Exposition in San Diego, CA. The findings indicate that dialysis patients who travel on vacation risk infections, anemia, and other complications that can compromise their dialysis treatments.

Contracts foster trust, but flexibility is needed, research says

BUFFALO, N.Y. -- While detailed contracts can foster trust between parties, there needs to be flexibility in negotiating potential changes, according to research recently published in MIS Quarterly.

Short heels make elite sprinters super speedy

When 100 m sprinters launches themselves from the starting blocks, the race can be won or lost in the first few strides. Acceleration through the first few strides is the key to winning gold.

How will bundling impact dialysis units nationwide?

The proposed Medicare "bundled" payment system for dialysis is likely to reduce government reimbursements for dialysis units in certain regions of the United States and for some types of facilities, according to research being presented at the American Society of Nephrology's 42nd Annual Meeting and Scientific Exposition in San Diego, CA.

Shire presents study findings on its ADHD treatments at psychiatric meeting Oct. 29-30

HONOLULU – October 29, 2009 – Shire plc (LSE: SHP, NASDAQ: SHPGY), the global specialty biopharmaceutical company, announced today that it will present key scientific data on its Attention-Deficit/Hyperactivity Disorder (ADHD) treatments, INTUNIV™ (guanfacine) Extended Release Tablets, Vyvanse® (lisdexamfetamine dimesylate) Capsules CII, and Daytrana® (methylphenidate transdermal system) CII, at a national meeting of psychiatrists to be held October 27 - November 1 in Honolulu.