The downed limbs and other woody debris that are inevitable byproducts of timber harvest could be among the most important components of post-harvest landscapes, according to a new study led by the U.S. Forest Service's Pacific Northwest Research Station.
Body
New York, NY—March 11, 2013—Researchers at Columbia Engineering have developed a new "plug-and-play" method to assemble complex cell microenvironments that is a scalable, highly precise way to fabricate tissues with any spatial organization or interest—such as those found in the heart or skeleton or vasculature. The study reveals new ways to better mimic the enormous complexity of tissue development, regeneration, and disease, and is published in the March 4 Early Online edition of Proceedings of the National Academy of Sciences (PNAS).
SAN FRANCISCO (March 11, 2013) — All-cause and cardiovascular mortality were similar for transaortic valve replacement compared to open-heart surgery in high-risk older patients at three years with no increased risk of stroke after 30 days, according to results from the PARTNER study presented today at the American College of Cardiology's 62nd Annual Scientific Session.
Infants as young as nine months old prefer individuals who are nice to people like them and mean to people who aren't like them, according to a new study published in Psychological Science, a journal of the Association for Psychological Science.
PROVIDENCE, R.I. – A new study by a Rhode Island Hospital researcher has found it's possible to maintain high-quality CT colonography diagnostic images while reducing the radiation dose. This is important as the use of CT colonography, or virtual colonoscopy, becomes more widely used for colorectal cancer screenings.
Human norovirus (hNoV), also known as the winter vomiting bug, is one of the most common stomach bugs in the world. The virus is highly contagious, causing vomiting and diarrhea, and the number of affected cases is growing. Currently there is no cure; sufferers have to let the virus run its course for a few days.
The consumption of fresh produce is frequently associated with outbreaks of hNoV but it remains difficult to identify where in the supply chain the virus first enters production.
The human skin is home to countless microorganisms that we can't see, but these microbes help define who we are. Our invisible passengers – known as the skin microbiome - contribute to our health in numerous ways including educating our immune system, protecting us from pathogens, and mediating skin disorders. In a new study, researchers investigated how the skin microbiome is transmitted between players in a contact sport, using roller derby as their model system.
Slender bacterial nanowires require certain key amino acids in order to conduct electricity, according to a study to be published in mBio®, the online open-access journal of the American Society for Microbiology, on Tuesday, March 12.
Infant girls exposed to high levels of the pesticide DDT while stillinside the womb are three times more likely to develop hypertensionwhen they become adults, according to a new study led by theUniversity of California, Davis.
Previous studies have shown that adults exposed to DDT(dichlorodiplhenyltrichloroethane) are at an increased risk of highblood pressure. But this study, published online March 12 inEnvironmental Health Perspectives, is the first to link prenatal DDTexposure to hypertension in adults.
Researchers at the University of Montreal's Institute for Research in Immunology and Cancer (IRIC) have discovered a new mechanism that allows some cells in our body to move together, in some ways like the tortoise formation used by Roman soldiers depicted in the Asterix series. Collective cell migration is an essential part of our body's growth and defense system, but it is also used by cancerous cells to disseminate efficiently in the body.
The mortality rate for men in same-sex marriages has dropped markedly since the 1990s, according to a Danish study published online today (Tuesday) in the International Journal of Epidemiology. However, same-sex married women have emerged as the group of women with the highest, and in recent years, even further increasing mortality.
Mouthguards and helmets can help ward off other serious head and facial injuries, but there is no good evidence that they can help prevent concussion, and paradoxically, they may even encourage players to take greater risks.
But that is precisely why it is so important to recognise and treat concussive symptoms promptly, says the Consensus Statement on Concussion in Sport, published in the British Journal of Sports Medicine.
Research from the University of Maryland School of Medicine has revealed key features in proteins needed for life to function on Mars and other extreme environments. The researchers, funded by NASA, studied organisms that survive in the extreme environment of Antarctica. They found subtle but significant differences between the core proteins in ordinary organisms and Haloarchaea, organisms that can tolerate severe conditions such as high salinity, desiccation, and extreme temperatures. The research gives scientists a window into how life could possibly adapt to exist on Mars.
SAN FRANCISCO (March 11, 2013) — Older patients did as well after undergoing coronary bypass surgery off-pump as they did with the more costly "on-pump" procedure using a heart-lung machine to circulate blood and oxygen through the body during surgery, according to research presented today at the American College of Cardiology's 62nd Annual Scientific Session.
SAN FRANCISCO (March 11, 2013) — Non-emergency angioplasty performed at hospitals without on-site cardiac surgery capability is no less safe and effective than angioplasty performed at hospitals with cardiac surgery services, according to research presented today at the American College of Cardiology's 62nd Annual Scientific Session.