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Science News Archive 2012 - Page 36


Page 36 of 333

Study examines surgical outcomes after head and neck cancer at safety-net hospitals

Safety-net hospitals provide head and neck cancer surgical care to vulnerable populations without increased short-term mortality, morbidity, or costs. The study found a disproportionate amount of care provided to uninsured or underinsured patients, highlighting the need for healthcare reform to address economic challenges.

SourceJAMA Network·JournalArchives of Otolaryngology - Head and Neck Surgery·DateNov 19, 2012

Sound bullets in water

Scientists develop a device that can form and control sound bullets in water, with potential uses for underwater imaging and biomedical applications. The device, inspired by Newton's cradle, focuses high-amplitude pressure pulses into compact sound bullets that can be tightly focused on a target area.

Genetic factor holds key to blood vessel health

Researchers at Case Western Reserve University School of Medicine identified a genetic factor KLF4 that prevents blockages from forming in blood vessels. The study found that a shortage of KLF4 makes the lining more prone to plaque buildup and clot formation, while sufficient levels protect against toxins and disease.

SourceCase Western Reserve University·JournalJournal of Clinical Investigation·DateNov 19, 2012

Teleconcussion validated in Mayo Clinic case study

A Mayo Clinic case study validates teleconcussion as a useful means to assess concussed patients in rural Arizona. The program uses telemedicine technology to bring concussion expertise to underserved areas, addressing the lack of access to neurological expertise in metropolitan areas.

SourceMayo Clinic·JournalTelemedicine and e-Health·DateNov 19, 2012

The fragility of the welfare state

An experimental study by Universidad Carlos III de Madrid found that income redistribution in the welfare state is not based on a consensus to relieve misfortune, but rather due to fear of unequal treatment. The researchers concluded that the social contract supporting the welfare state is fragile and lacks a Hobbesian element.

SourceUniversidad Carlos III de Madrid·JournalExperimental Economics·DateNov 19, 2012

Study suggests repeat testing common among Medicare beneficiaries

A recent study suggests that diagnostic tests are frequently repeated among Medicare beneficiaries, with 55% of those undergoing echocardiography having a second test within three years. This finding raises questions about the routine repetition of diagnostic tests and their impact on healthcare costs and patient health.

SourceJAMA Network·JournalArchives of Internal Medicine·DateNov 19, 2012

Lava dots: Rice makes hollow, soft-shelled quantum dots

Researchers at Rice University have created a new type of nanoparticle called lava dots, which are hollow and coated versions of quantum dots. The particles were discovered using a 'molten-droplet synthesis' technique and can be used as catalysts for hydrogen production, chemical sensors, and solar cells.

SourceRice University·JournalNanotechnology·DateNov 19, 2012

Can't stop? Smoking less helps

A 40-year study published in the American Journal of Epidemiology found that smokers who reduced their cigarette consumption saw a 15% reduced risk of mortality and a 23% reduced risk of cardiovascular mortality. Formerly heavy smokers had the most to gain from smoking reduction.

SourceAmerican Friends of Tel Aviv University·JournalAmerican Journal of Epidemiology·DateNov 19, 2012

Research breakthrough selectively represses the immune system

Researchers have developed a novel treatment that selectively inhibits the part of the immune system responsible for attacking myelin, reducing inflammation in autoimmune disorders like MS. The therapy uses microscopic particles to induce tolerance in animal models, showing potential for treating MS, type I diabetes, and food allergies.

Fabrication on patterned silicon carbide produces bandgap to advance graphene electronics

By fabricating graphene structures atop nanometer-scale steps etched into silicon carbide, researchers have created a substantial electronic bandgap suitable for room-temperature electronics. The bandgap allows for the fabrication of transistors and other devices, potentially opening the door for developing all-carbon integrated circuits.

SourceGeorgia Institute of Technology·JournalNature Physics·DateNov 18, 2012

Skin cells reveal DNA's genetic mosaic

Researchers at Yale University have discovered that genetic variations are common in the body's tissues, with 30% of skin cells harboring copy number variations. This finding has significant implications for genetic screening and our understanding of human development and disease.

SourceYale University·JournalNature·DateNov 18, 2012

Into the magnetic resonance scanner with a cuddly toy

Bochum clinicians successfully performed MRI scans on 326 children without sedation, achieving a 97% diagnostic relevance rate. The BLADE technique was used to minimize blurring and maximize image quality, allowing for successful examinations in 41% of three-year-olds, 91% of four-year-olds, and 98% of patients over five years old.

SourceRuhr-University Bochum·JournalRöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren·DateNov 16, 2012

Children who swim start smarter

Children who learn to swim early achieve better visual-motor skills and excel in literacy and numeracy. The comprehensive three-year study found significant differences between swimming and non-swimming children, regardless of socio-economic status.

Reconsidering cancer's bad guy

Researchers at the University of Copenhagen have discovered that a protein known for causing cancer cells to spread is also involved in brain repair. The study, published in Nature Communications, suggests new avenues for treating degenerative brain diseases like Alzheimer's.

SourceUniversity of Copenhagen·JournalNature Communications·DateNov 16, 2012

Antenna-on-a-chip rips the light fantastic

The Rice team's device can modulate a signal at more than 10 gigabits per second, making it suitable for real-time video processing and high-speed data throughput. This breakthrough has the potential to scale up the capability of optical information processing systems by several magnitudes.

SourceRice University·JournalScientific Reports·DateNov 16, 2012

Are we closer to understanding the cause of deadly sepsis?

A growing body of literature suggests that alterations in regulatory T cell function may contribute to the development of sepsis. Manipulating these cells may offer a promising approach to treating patients with septic shock. The Journal of Interferon & Cytokine Research reviews the current understanding of this complex immune response.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalJournal of Interferon & Cytokine Research·DateNov 16, 2012