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Science News Archive 2009 - Page 149


Page 149 of 277

Improved method developed to test carcinogen risk

Researchers at Oregon State University have completed the largest animal study in toxicology, challenging basic concepts of carcinogen risk assessment. The findings suggest that some chemicals may be safe at levels far higher than currently believed, and traditional methods need re-evaluation.

SourceOregon State University·JournalChemical Research in Toxicology·DateJun 18, 2009

Got ear plugs? You may want to sport them on the subway and other mass transit, researchers say

Researchers found Metropolitan Transit Authority (MTA) subways had the highest average noise levels in New York City, with levels high enough to increase the risk of noise-induced hearing loss. The study highlights the need for increased transit infrastructure maintenance and personal protection measures to reduce noise exposure.

SourceColumbia University's Mailman School of Public Health·JournalAmerican Journal of Public Health·DateJun 18, 2009

Autonomous robot detects shrapnel

Researchers at Duke University developed a laboratory robot that can detect tiny pieces of metal within flesh using 3D ultrasound technology. The robot successfully guided a needle to its location without human assistance, paving the way for potential treatments of shrapnel injuries and medical procedures like prostate cancer treatment.

Using math to take the lag out of jet lag

A new software program uses mathematical modeling to prescribe optimal light exposure for avoiding jet lag, resulting in quicker re-synchronization and improved performance. The method considers background light levels and time zones traveled, providing personalized recommendations for bright light intervention.

SourcePLOS·JournalPLOS Computational Biology·DateJun 18, 2009

Computers can boost literacy

A California Department of Education-funded project found that student achievement increased 27.5% with the use of technology to increase academic achievement in fourth-grade classrooms. Traditional print-based literacy is still important, but new technologies are also essential for students in the 21st century.

NIST discovers how strain at grain boundaries suppresses high-temperature superconductivity

Researchers at NIST have discovered that reducing mechanical strain at grain boundaries significantly improves high-temperature superconductor performance. By mitigating the effect of granularity, they could enable more efficient electrical transmission lines, increased power grid reliability, and advanced cancer treatment facilities.

SourceNational Institute of Standards and Technology (NIST)·JournalPhysical Review Letters·DateJun 17, 2009

Wrong type of help from parents could worsen child's OCD

Parents' attempts to soothe anxiety and assist with OCD behaviors can exacerbate the condition in children, according to a new study published in the Journal of Consulting and Clinical Psychology. Researchers found that accommodations like excessive bathing or checking rituals worsen symptoms, while therapy helps improve outcomes.

SourceUniversity of Florida·JournalJournal of Consulting and Clinical Psychology·DateJun 17, 2009

Structures from the human immune system's oldest branch shed light on a range of diseases

Researchers have discovered two new structures involving the central component of an enzyme important to the complement system of the immune response. These findings may pave the way for more efficient therapeutics for diseases such as age-related macular degeneration, rheumatoid arthritis, and systemic lupus erythematosus.

SourceUniversity of Pennsylvania School of Medicine·JournalNature Immunology·DateJun 17, 2009

St. Gallen consensus 2009: A radically different approach to treating early breast cancer

The report emphasizes the importance of identifying specific types of breast cancer and tailoring treatment to individual patients. It recommends adjuvant endocrine therapy for most patients with oestrogen receptor-positive tumours, anti-HER2 therapy for HER2-positive disease, and chemotherapy for triple-negative disease.

SourceEuropean Society for Medical Oncology·JournalAnnals of Oncology·DateJun 17, 2009

The power of prayer?

A recent study published in the Journal of Religion examines medical studies on intercessory prayer, finding that scientists' personal beliefs influenced the outcomes. The research highlights the evolution of American religious demographics and the development of clinical trials.

SourceBrandeis University·JournalThe Journal of Religion·DateJun 17, 2009

Texting in class

Researchers are redefining what constitutes literature with the rise of Japanese cell-phone novels, which demonstrate similar linguistic sophistication to traditional print novels. A study found that cell-phone novels are written at a lower reading level, sparking debate about their literary merit.

Hodgkin lymphoma survivors have increased risk of stroke and transient ischemic attack

Patients treated for Hodgkin lymphoma with radiation therapy have a substantially higher risk of stroke. After a median follow-up of almost 18 years, 96 patients developed cerebrovascular disease, with the incidence rate for stroke being 2.2 times that in the general population. Risk factors include radiation to the neck and mediastinum.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateJun 17, 2009

NICE approves use of lenalidomide in patients with multiple myeloma who have received 2 or more previous therapies

The UK's National Institute for Health and Clinical Excellence (NICE) has approved the use of lenalidomide in patients with multiple myeloma who have received two or more previous therapies. The approval is based on robust data showing that lenalidomide can increase survival by over three months compared to dexamethasone.

SourceThe Lancet_DELETED·JournalThe Lancet Oncology·DateJun 17, 2009

Playing video games for better, not worse

Researchers conducted three studies across different countries, age groups, and approaches, finding a strong correlation between playing prosocial games and increased helpful behavior. The studies suggest an upward spiral of prosocial gaming leading to improved prosocial behavior.

SourceUniversity of Michigan·JournalPersonality and Social Psychology Bulletin·DateJun 17, 2009

SSPEED Center wins $1.25M for Ike study

The SSPEED Center will compile lessons learned from Hurricane Ike and provide recommendations on preparing for future storms. The project aims to improve methods for predicting storm impacts, evacuation planning, and land use development in vulnerable areas.

Free textbooks

The trend of open-source academic publishing is changing the way textbooks are created and distributed. As more authors self-publish their work, it raises essential questions about how to fairly compensate them for their time and effort.