Tag Archives: strain

Scientists Cooking Up Alloy “Recipes” For Bone Implants

Project will utilize Ohio State’s new microscopy facility

COLUMBUS, Ohio — Armed with microscopes, computers and an innovative way to study metals, researchers at The Ohio State University and their partners are building a database of new titanium alloys.

The goal: to reduce the stress that pins, plates and other medical implants put on healthy bones. (more…)

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Engineering Bacterial Live Wires

Berkeley Lab scientists discover the balance that allows electricity to flow between cells and electronics

Just like electronics, living cells use electrons for energy and information transfer. Despite electrons being a common “language” of the living and electronic worlds, living cells cannot speak to our largely technological realm. Cell membranes are largely to blame for this inability to plug cells into our computers: they form a greasy barrier that tightly controls charge balance in a cell.  Thus, giving a cell the ability to communicate directly with an electrode would lead to enormous opportunities in the development of new energy conversion techniques, fuel production, biological reporters, or new forms of bioelectronic systems. (more…)

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New Insights into How Genetic Differences among Individuals Influence Breast Cancer Risk from Low-Dose Radiation

Berkeley Lab research could lead to new ways to ID women who have higher risk of breast cancer from low-dose radiation

Scientists from the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have identified tissue mechanisms that may influence a woman’s susceptibility or resistance to breast cancer after exposure to low-dose ionizing radiation, such as the levels used in full-body CT scans and radiotherapy.

The research could lead to new ways to identify women who have higher or lower risks of breast cancer from low-dose radiation. Such a predictive tool could help guide the treatment of cancer patients who may be better served by non-radiation therapies. (more…)

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Researchers Come a Step Closer to Finding HIV Vaccine

Scientists used genetic sequencing to discover that the vaccine used in the RV144 HIV vaccine trial, involving 16,000 men and women in Thailand, did offer some protection against certain HIV viruses. The results were published Sept. 10 in the online edition of Nature.

James Mullins, UW professor of microbiology, medicine and laboratory medicine, leads one of the two laboratories that did genetic analyses of the virus. He said the study proved that an HIV vaccine is within reach. (more…)

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The Best Strategy to Defeat HIV in South Africa

UCLA study challenges World Health Organization’s approach

The World Health Organization is about to roll out a new strategy for AIDS prevention in South Africa, a country where more than 5 million people are infected with HIV. Based on a mathematical model, the WHO predicts this strategy will completely eliminate HIV in South Africa within a decade.

But not so fast, suggests a group of UCLA researchers. Their work challenges the proposed strategy by showing it could lead to several million individuals developing drug-resistant strains of HIV. And further, they say, it will cost billions of dollars more than the WHO has estimated. (more…)

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Going Big

UD researchers report progress in development of carbon nanotube-based continuous fibers

The Chou research group in the University of Delaware’s College of Engineering recently reported on advances in carbon nanotube-based continuous fibers with invited articles in Advanced Materials and Materials Today, two high impact scientific journals.

According to Tsu-Wei Chou, Pierre S. du Pont Chair of Engineering, who co-authored the articles with colleagues Weibang Lu and Amanda Wu, there has been a concerted scientific effort over the last decade to “go big” – to translate the superb physical and mechanical properties of nanoscale carbon nanotubes to the macroscale. (more…)

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Guidelines Stress Caution When Combining Anti-Epileptic, HIV Drugs

EAST LANSING, Mich. — New guidelines from the American Academy of Neurology will help physicians better choose seizure drugs for people on HIV/AIDS medication, avoiding deadly drug interactions and preventing critical anti-HIV drugs from becoming less effective, possibly leading to a more virulent strain of the disease.

Michigan State University’s Gretchen Birbeck – who spends several months each year in the sub-Sahara African nation of Zambia researching epilepsy, HIV /AIDS and cerebral malaria – is the lead author of the medical guideline, which was co-developed with the World Health Organization through the International League Against Epilepsy. (more…)

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Haiti Quake Risk May Still be High

The fault initially thought to have triggered January’s devastating earthquake in Haiti is likely still under considerable strain and continues to pose a significant seismic hazard, according to a study published online in Nature Geoscience Sunday.  

U.S. Geological Survey geologist Carol Prentice led a team of scientists to Haiti immediately after the earthquake to search for traces of ground rupture and to investigate the geology and paleoseismology of the area.  (more…)

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