LIVERMORE, Calif. - Researchers have achieved a milestone in materials science and electron microscopy by taking a high-resolution snapshot of the transformation of nanoscale structures.
Using the Lab's Dynamic Transmission Electron Microscope (DTEM), Judy Kim and colleagues peered into the microstructure and properties of reactive multilayer foils (also known as nanolaminates) with 15-nanosecond-scale resolution.
BLOOMINGTON, Ind. -- An Indiana University study found that HIV care providers in rural Indiana report significant stigma and discrimination in the rural medical referral system surrounding issues of HIV and substance abuse. Providers felt that these factors impeded their ability to offer quality care to their patients.
In a paper published today in Science, Steve Brusatte and Professor Mike Benton challenge the general consensus among scientists that there must have been something special about dinosaurs that helped them rise to prominence.
Dinosaurs epitomize both success and failure. Failure because they went extinct suddenly 65 million years ago; success because they dominated terrestrial ecosystems for well over 100 million years evolving into a wide array of species that reached tremendous sizes.
T. rex and Triceratops: In the popular imagination, dinosaurs are extraordinary reptiles that ruled the world for over 160 million years. But Steve Brusatte, a doctoral student at Columbia University who is an affiliate of the American Museum of Natural History, and colleagues are challenging this idea with new fossil data and math. By comparing early dinosaurs to their competitors, the crurotarsan ancestors to crocodiles, they have found that dinosaurs were not "superior," as has long been thought.
INDIANAPOLIS — Scientists have discovered a compound that could lead to new treatments for heart attacks as well as methods to protect hearts during open heart surgery and other situations in which blood flow to the heart is interrupted.
With the current outbreaks of listeriosis in Canada connected to deli meats and cheese, CMAJ is releasing guidelines for health care professionals and the general public about symptoms, who is at risk, symptom management, and how to reduce the risk of listeriosis. http://www.cmaj.ca/cgi/rapidpdf/cmaj.081377v1
OKLAHOMA CITY – After years of working toward this goal, scientists at the OU Cancer Institute have found a way to isolate cancer stem cells in tumors so they can target the cells and kill them, keeping cancer from returning.
A research team at the University of Oklahoma led by Courtney Houchen, M.D., and Shrikant Anant, Ph.D., discovered that a particular protein only appears in stem cells. Until now, researchers knew of proteins that appeared in both regular cancer cells and stem cells, but none that just identified a stem cell.
North Hollywood, CA – September 11, 2008 - The International Myeloma Foundation (IMF)—supporting research and providing education, advocacy and support for myeloma patients, families, researchers and physicians—today said survival outcomes have improved dramatically for patients with multiple myeloma, cancer in the bone marrow that affects blood cell production. Writing in the October 10th edition of the Journal of Clinical Oncology*, IMF chairman Brian G.M.
CHICAGO -- What's the worst that could happen after eating a slice of pepperoni pizza? A little heartburn, for most people.
But for up to a million women in the U.S., enjoying that piece of pizza has painful consequences. They have a chronic bladder condition that causes pelvic pain. Spicy food -- as well as citrus, caffeine, tomatoes and alcohol-- can cause a flare in their symptoms and intensify the pain. Researchers had long believed the spike in their symptoms was triggered when digesting the foods produced chemicals in the urine that irritated the bladder.
We all know that people can be influenced in complex ways by their peers. But two new studies in the September 11th issue of Current Biology, a Cell Press publication, reveal that the same can also be said of fruit flies.
The researchers found that group composition affects individual flies in several ways, including changes in gene activity and sexual behavior, all mediated by chemical communication.
ROCHESTER, Minn. -- Mayo Clinic investigators have demonstrated that stem cells can be used to regenerate heart tissue to treat dilated cardiomyopathy, a congenital defect. Publication of the discovery was expedited by the editors of Stem Cells and appeared online in the "express" section of the journal's Web site at http://stemcells.alphamedpress.org/.
STANFORD, Calif. - Oncologist Allison Kurian, MD, and her colleagues at the Stanford University School of Medicine were perplexed. Computer models designed to identify women who might have dangerous genetic mutations that increase their risk of breast and ovarian cancer worked well for white women. But they seemed to be less reliable for another ethnic group.
A new study has highlighted the key role technology could play in extending the age at which people can drive safely on our roads.
With input from older people, researchers from the University of the West of England, Bristol, have identified ideas for innovative in-car information systems which, if developed, could help compensate for the reduction in reaction time that affects many drivers as they get older.
A carefully framed combination of moderate exercise and nutritional supplements could help older people maintain an active lifestyle for longer.
A Manchester Metropolitan University study has found that taking carbohydrate and protein supplements just before and just after low-resistance exercise could boost muscle performance and slow muscle wastage in people over retirement age.
Moreover, this combination appears to deliver greater fitness benefits than undertaking heavy-resistance training with or without changing one's nutritional habits.
A new study has pinpointed how simple, low-cost measures could revolutionise older people's ability to use transport systems effectively, safely and with confidence.
Researchers at the University of Leeds and Leeds Metropolitan University believe the measures they have identified could eliminate many of the day-to-day problems that currently deter older people from using public transport and the pavements and roads in their locality.
Examples of potential measures include: