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Science News Archive 2009 - Page 32


Page 32 of 277

First near-total face and upper-jaw transplant appears successful

A groundbreaking face and upper-jaw transplant has successfully integrated donor tissue with no long-term rejection, enabling the recipient to regain senses of smell and taste. The procedure, performed on a patient with extensive damage from postoperative scarring and blood vessel depletion, demonstrates the feasibility of facial trans...

SourceJAMA Network·JournalArchives of Facial Plastic Surgery·DateNov 16, 2009

Ancient high-altitude trees grow faster as temperatures rise

A recent study found that ancient high-altitude bristlecone pines in the western US are experiencing unprecedented growth rates due to rising temperatures. Trees growing near treeline, typically at elevations above 11,000 feet, showed wider annual growth rings from 1951 to 2000 compared to previous centuries.

SourceUniversity of Arizona·JournalProceedings of the National Academy of Sciences·DateNov 16, 2009

Skin color gives clues to health

The study found that rosier skin appears healthier due to increased blood flow, while golden or 'yellow-toned' skin may indicate higher antioxidant levels from a healthy diet. This discovery suggests that nutrition plays a crucial role in achieving the most desirable complexion.

SourceSpringer·JournalInternational Journal of Primatology·DateNov 16, 2009

K-State patents enabling technology for spread-spectrum systems

Researchers at Kansas State University developed an algorithm that enables next-generation smart adaptive radios and makes radars more effective by customizing the coding used in transmitting signals. The algorithm can be applied to various systems employing spread spectrum techniques, including cellular, satellite, and wireless networks.

SourceKansas State University·JournalIEEE Transactions on Wireless Communications·DateNov 16, 2009

Uninsured more likely to die after trauma

According to a recent study published in Archives of Surgery, uninsured patients are more likely to die after trauma than those with health insurance. The study analyzed records from the National Trauma Data Bank and found that uninsured patients had a higher mortality rate even after controlling for age, sex, race, and injury severity.

SourceJAMA Network·JournalArchives of Surgery·DateNov 16, 2009

JCI online early table of contents: Nov. 16, 2009

Researchers have identified a microRNA (miR-2861) that regulates bone formation, and its mutation is linked to primary osteoporosis. In addition, studies on Lyme disease transmission revealed a biphasic mode of dissemination by Borrelia burgdorferi microbes within ticks.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateNov 16, 2009

New climate treaty could put species at risk

A new UN climate treaty may inadvertently increase the risk of extinction for some species as governments prioritize reducing deforestation in high-carbon forests. The REDD scheme aims to curb carbon emissions by financially rewarding tropical countries that reduce forest clearance.

SourceUniversity of Leeds·JournalCurrent Biology·DateNov 16, 2009

The future of private equity

Steve Kaplan predicts lower default rates and higher recoveries in private equity deals due to increased efficiency and operating value. The industry can prevent overpriced deals by promoting larger equity commitments from financial sponsors.

SourceWiley·JournalJournal of Applied Corporate Finance·DateNov 16, 2009

HIV vaccine failure probably caused by virus used, says new research

Researchers found that people who had previously built up immunity to the adenovirus used in the trial had a higher risk of infection with HIV after receiving the vaccine. The study suggests that other adenovirus-based vaccines, such as those for tuberculosis and malaria, may also be at risk due to the same immune system reaction.

SourceImperial College London·JournalProceedings of the National Academy of Sciences·DateNov 16, 2009

Immune system of healthy adults may be better prepared than expected to fight 2009 H1N1 influenza

A new study found that healthy adults have a level of protective immune memory against the 2009 H1N1 influenza virus. This immunity can blunt the severity of infection and provide some protection. The findings may explain why younger children are more severely affected by the pandemic.

SourceNIH/National Institute of Allergy and Infectious Diseases·JournalProceedings of the National Academy of Sciences·DateNov 16, 2009

Imaging techniques may help predict response to head and neck cancer treatment

A study found that combining positron emission tomography and computed tomography (PET-CT) scans six to eight weeks after chemoradiotherapy for advanced head and neck cancer can identify patients who will respond to treatment. The test also showed high sensitivity and specificity in detecting residual disease and distant metastases.

SourceJAMA Network·JournalArchives of Otolaryngology - Head and Neck Surgery·DateNov 16, 2009

Structured reporting software creates less complete and accurate radiology reports than free text

A new study published in Radiology found that using standardized words and phrases from a pull-down menu actually decreased the completeness and accuracy of radiology reports. Researchers tested two groups of residents on different reporting methods, finding that structured software resulted in less complete and accurate reports.

SourceAtrium Health Wake Forest Baptist·JournalRadiology·DateNov 16, 2009

Tiny bubbles clean oil from water

A University of Utah engineer has developed a new method to remove oil sheen from polluted water using tiny bubbles created by pressurizing ozone gas. This method, which targets the oil sheen and other pollutants, could be used to clean wastewater discharged into coastal waters and soil contaminated with heavy metals.

SourceUniversity of Utah·JournalChemosphere·DateNov 15, 2009

MIT scientists pinpoint origin of dissolved arsenic in Bangladesh drinking water

Researchers pinpoint the origin of dissolved arsenic in Bangladesh's drinking water to ponds excavated for village construction and irrigated agriculture. The study suggests that these ponds mobilize organic carbon, leading to arsenic dissolution in groundwater, with rice fields acting as a buffer but also contributing to arsenic levels.