Earth Sciences
ROSEMONT, IL–While low-level shoulder separations can commonly be treated nonsurgically and high-level injuries often require surgery, a literature review published in the April 2009 issue of the Journal of the American Academy of Orthopaedic Surgeons (JAAOS) finds that many surgeons still disagree on the best course of treatment for those injuries that fall in between.
Shoulder separations, clinically known as acromioclavicular joint injuries, represent nearly half of all athletic shoulder injuries.
These injuries result from a fall onto the tip of the shoulder with the arm tucked in…
DALLAS – April 1, 2009 – Researchers at UT Southwestern Medical Center have identified a new biological indicator that may help identify which brain-cancer patients have the most aggressive forms of the disease.
The researchers found that an inflammation-related molecule called RIP1 is commonly found in high levels in glioblastoma, the most common primary malignant brain tumor in adults. The protein RIP1 is a component of the complex NF-kB signaling network – a family of proteins that play a key role in inflammation-induced cancer.
The study, available online and published in the April issue…
CLEVELAND – March 31, 2009 – The power of magnetism could be an enabling technology to address a major problem facing bioengineers as they try to create new tissue—getting human cells to not only form structures, but to stimulate the growth of blood vessels to nourish their growth.
A multidisciplinary team of investigators from Case Western Reserve University, Duke University and University of Massachusetts, Amherst, created an environment where magnetic particles suspended within a specialized liquid solution acted like molecular sheep dogs by nudging free-floating human cells to form chains…
COLUMBIA, Mo. – Older women who live alone are vulnerable to unwanted intrusions in their homes, according to the Centers for Disease Control and Prevention. Caregivers of older women often evaluate crime risk and home security, but fail to identify women's intentions to reduce intrusion risk. In a new study, a University of Missouri professor has found that in order to feel safe at home, older women need to recognize safety risks and perceive themselves as capable of preventing intrusions.
"Older women's intentions to ensure accessibility to their homes for family, friends, and neighbors…
Researchers at the University of Illinois report that IDO, an enzyme found throughout the body and long suspected of playing a role in depression, is in fact essential to the onset of depressive symptoms sparked by chronic inflammation.
Their study, just published online in the Journal of Immunology, is the first to identify IDO (indoleamine 2,3 dioxygenase) as a molecular switch that induces depressive symptoms in some cases of chronic inflammation.
Doctors have known for decades that patients with chronic inflammation, such as that linked to coronary heart disease or rheumatoid arthritis,…
DURHAM, N.C. -- The power of magnetism may address a major problem facing bioengineers as they try to create new tissue -- getting human cells to not only form structures, but to stimulate the growth of blood vessels to nourish that growth.
A multidisciplinary team of investigators from Duke University, Case Western Reserve University and the University of Massachusetts, Amherst created an environment where magnetic particles suspended within a specialized solution act like molecular sheep dogs. In response to external magnetic fields, the shepherds nudge free-floating human cells to form…
You've probably been there. In a doctor's office, being advised to do what you dread – exercise. You get that feeling in your gut, acknowledging that, indeed, you should exercise but probably won't. Now imagine that the doctor is your optometrist.
Don't clean your glasses. You read that right. Eye exercises are used to treat a variety of vision disorders, according to Dr. Janice Wensveen, clinical associate professor at the University of Houston's College of Optometry.
Patient reactions to this quite common prescription range between surprise and relief, she said, but doing the therapy can…
The atomic dynamics of the hole in graphene was simulated via a kinetic Monte Carlo method. Probabilities for atomic migration, insertion and ejection were determined by ab-initio calculation. The simulation starts with a predefined hole in a graphene sheet. As it proceeds, the hole grows and the atoms along the edge rearrange themselves. The zigzag configuration is found to dominate the armchair one.
(Photo Credit: National Center for Electron Microscopy)
This Quicktime movie produced with the TEAM 0.5 microscope shows the growth of a hole and the atomic edge reconstruction in a…
This story is, literally, stone age meets digital age: University of Washington researchers are combining the ancient art of ceramics and the new technology of 3-D printing. Along the way, they are making 3-D printing dramatically cheaper.
About five years ago, Mark Ganter, a UW mechanical engineering professor and longtime practitioner of 3-D printing, became frustrated with the high cost of commercial materials and began experimenting with his own formulas. He and his students gradually developed a home-brew approach, replacing a proprietary mix with artists' ceramic powder blended with…
GAITHERSBURG, Md.—Researchers at the Commerce Department's National Institute of Standards and Technology (NIST) and Cornell University have capitalized on a process for manufacturing integrated circuits at the nanometer (billionth of a meter) level and used it to develop a method for engineering the first-ever nanoscale fluidic (nanofluidic) device with complex three-dimensional surfaces.
As described in a paper published online today in the journal Nanotechnology,* the Lilliputian chamber is a prototype for future tools with custom-designed surfaces to manipulate and measure different…