BOSTON -- The PTEN tumor suppressor gene controls numerous biological processes including cell proliferation, cell growth and death. But PTEN is frequently lost or mutated; in fact, alteration of the gene is so common among various types of human cancer that PTEN has become one of the most frequently mutated of all tumor suppressors.
COLUMBUS, Ohio -- Researchers here have found a way to convert ethanol and other biofuels into hydrogen very efficiently.
A new catalyst makes hydrogen from ethanol with 90 percent yield, at a workable temperature, and using inexpensive ingredients.
Umit Ozkan, professor of chemical and biomolecular engineering at Ohio State University, said that the new catalyst is much less expensive than others being developed around the world, because it does not contain precious metals, such as platinum or rhodium.
Ever since Bram Cohen invented BitTorrent, Web traffic has never been the same. Whether that's a good thing or a bad thing, however, is a matter of debate.
Peer-to-peer networking, or P2P, has become the method of choice for sharing music and videos. While initially used to share pirated material, the system is now used by NBC, BBC and others to deliver legal video content and by Hollywood studios to distribute movies online. Experts estimate that peer-to-peer systems generate 50 to 80 percent of all Internet traffic. Most predict that number will keep going up.
Do you know someone who claims to remember their first day of kindergarten? Or a trip they took as a toddler? While some people may be able to recall trivial details from the past, laboratory research shows that the human memory can be remarkably fragile and even inventive.
In fact, people can easily create false memories of their past and a new study shows that such memories can have long-term effects on our behavior.
WASHINGTON -- Since the terrorist attacks of 2001, the Bureau of Reclamation (BOR), which operates and manages dams that provide water and power to millions of people, has invested significant resources in security and is better able to protect its facilities and personnel, says a new report from the National Research Council. However, BOR needs better communication among security staff, regional and area office staff, and local law enforcement personnel; security plans that are designed to meet realistic, site-specific threats; and more consistent support within the organization.
TORONTO, ON. – Individuals with a more senior level of job authority have higher levels of interpersonal conflict according to new research out of the University of Toronto.
The study conducted by Scott Schieman, a professor of sociology at the University of Toronto and Sarah Reid, a PhD candidate, involved data from a 2005 sample of 1,785 working adults in the United States. This is the first study of a nationally representative sample that documents the link between power and conflict in the workplace across a broad cross-section of jobs and sectors.
INDIANAPOLIS -- Chronic lead poisoning, caused in part by the ingestion of contaminated dirt, affects hundreds of thousands more children in the United States than the acute lead poisoning associated with imported toys or jewelry. Could treating contaminated soil with water prevent this public health scourge?
OAK BROOK, Ill. – Repeat exams using widely available and inexpensive ultrasound imaging could help identify patients at high risk for a heart attack or other adverse cardiovascular events, according to a study published in the September issue of the journal Radiology.
Clinical studies that are designed by pharmaceutical companies to promote use of their drugs are called "seeding" trials. While much has been written about the marketing tactics of the pharmaceutical industry, seeding trials have not been characterized in depth.
A new study finds strong documentary evidence of how a pharmaceutical company framed a marketing effort as a clinical trial. Researchers reviewed internal documents that became public during litigation against the drug manufacturer.
The impact of global warming in the Arctic may differ from the predictions of computer models of the region, according to a pair of Penn State biologists. The team -- which includes Eric Post, a Penn State associate professor of biology, and Christian Pederson, a Penn State graduate student -- has shown that grazing animals will play a key role in reducing the anticipated expansion of shrub growth in the region, thus limiting their predicted and beneficial carbon-absorbing effect.