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247,911 articles from PhysOrg

Google Asks EU's OK of DoubleClick Buy

(AP) -- Google Inc. said Friday it had filed for European Union permission to take over online ad tracker DoubleClick, a $3.1 billion deal that already has stirred concern about the control it will give Google over Internet advertising.

Researchers create new synthetic heparin

Researchers at the University of North Carolina at Chapel Hill have patented a synthetic version of the drug heparin, called Recomparin, that is less complex chemically and should be easier to produce than previous forms.

Oncologists use real-time system to plant 'seeds' against cancer

Radiation oncologists and urologists at the Kimmel Cancer Center at Jefferson and Thomas Jefferson University Hospital in Philadelphia have begun using a real-time system to implant radiation-emitting seeds in prostate cancer patients. While the system, which is made by Nucletron, a technology company based in The Netherlands, is only being used for imaging and planning purposes so far, it...

Researchers Studying Model to Learn Why Certain Cancers Become Resistant to Drugs

Resistance to chemotherapy treatments can be the worst news a cancer patient ever receives. A pair of researchers at the University of Missouri-Columbia is working steadfastly to learn why some tumors eventually build a tolerance to the common chemotherapy drug cisplatin, in hopes of identifying the particular genes that can be manipulated to make treatment as effective as possible.

Odyssey Finds Possible Cave Skylights on Mars

NASA's Mars Odyssey spacecraft has discovered entrances to seven possible caves on the slopes of a Martian volcano. The find is fueling interest in potential underground habitats and sparking searches for caverns elsewhere on the Red Planet.

Brain atrophy in elderly leads to unintended racism, depression and problem gambling

As we age, our brains slowly shrink in volume and weight. This includes significant atrophy within the frontal lobes, the seat of executive functioning. Executive functions include planning, controlling, and inhibiting thought and behavior. In the aging population, an inability to inhibit unwanted thoughts and behavior causes several social behaviors and cognitions to go awry.

Mass Spectrometry of Living Subjects

In science fiction movies, it happens all the time: A small device is briefly held against the skin of a sick crewmember and seconds later the monitor displays what ails him. This futuristic image could someday be real.

New method extracts neutrons from superfluid helium

“There are many applications for ultracold neutrons in fundamental physics,” Oliver Zimmer tells PhysOrg.com. “And we will find even more applications with a stronger source of ultracold neutrons.” Zimmer, a scientist at the Institut Laue Langevin in Grenoble, France, thinks that he and his colleagues may have found a way to tap a better source for ultracold neutrons by extracting them from...

Pleasant odors perceived the same by different cultures

Chinese, Africans and Indians may differ in what odors they find yummy, but they all perceive pleasantness in the same way, according to the findings of neurobiologists from the University of California, Berkeley, and the Weizmann Institute of Science in Rehovot, Israel.

Recycling wind turbines

The development of wind power promises much in terms of providing us with renewable energy for the future and wind turbines could be the most effective way to harness that power. Danish researchers now suggest that in order to assess the overall environmental impact of wind power, however, the finite lifespan of wind turbines and the need to replace and recycle them must be taken into account....

Simulating kernel production influences maize model accuracy

Recently, researchers at Iowa State University discovered a way to increase the accuracy of a popular crop model. By zeroing in on early stages leading up to kernel formation, scientists believe they can help improve yield predictions across a variety of environmental conditions. The team of scientists reported their findings in the September-October issue of Crop Science.

Computer program traces ancestry using anonymous DNA samples

A group of computer scientists, mathematicians, and biologists from around the world have developed a computer algorithm that can help trace the genetic ancestry of thousands of individuals in minutes, without any prior knowledge of their background. The team`s findings will be published in the September 2007 edition of the journal PLoS Genetics.

Palm Struggles to Shine Again

(AP) -- Palm Inc.'s death knell has been rung over and over - on Wall Street, in headlines, and by a growing number of discontented fans.

Scientists discover technique to help 'friendly bacteria'

There is currently a great deal of interest in the health-associated properties of probiotics, also known as ‘beneficial` or ‘friendly` bacteria, and prebiotics, the food needed for the growth of probiotic when inside our bodies. University of Leicester scientists have discovered a natural fruit-based extract that dramatically improves the growth and probiotic qualities of ‘friendly` bacteria...