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Science News for August 23, 2011


Controlling magnetism with electric fields

Researchers developed a multiferroic material that reacts to both magnetic and electric fields at room temperature, fulfilling a long-held dream. The material's ferromagnetic properties were demonstrated using X-ray magnetic circular dichroism, paving the way for more efficient data storage and logical switches.

SourceRuhr-University Bochum·JournalNature Materials·DateAug 23, 2011

2011 health conditions for travel to Mecca (Hajj) pilgrimage published

The Saudi Ministry of Health has published its 2011 health conditions for travelers to the Kingdom of Saudi Arabia for the Hajj pilgrimage. The guidelines outline the full requirements for entry into Saudi Arabia and aim to protect pilgrims from communicable diseases. Travelers are urged to read the guidelines thoroughly.

SourceElsevier·JournalJournal of Infection and Public Health·DateAug 23, 2011

Filling without drilling

Researchers at the University of Leeds have developed a peptide-based fluid that reverses tooth decay by stimulating regeneration of damaged tooth tissue. The treatment is applied directly to the affected area, providing a natural and non-invasive solution to filling teeth without drilling.

Ancient wild horses help unlock past

A team of researchers has found an abundance of genetic diversity in ancient wild horses, contradicting the idea that modern male horses lack diversity due to intrinsic properties. The study suggests that domestication is the main reason for the low genetic diversity in modern stallions.

SourceUniversity of York·JournalNature Communications·DateAug 23, 2011

How many species on Earth? 8.7 million

The most precise estimate of Earth's species total is based on a novel analytical technique that narrows previous estimates. The study predicts approximately 8.7 million species, with 91% of marine and 86% of land species remaining undiscovered. This new understanding is crucial for conservation efforts and ecosystems services.

SourceCensus of Marine Life·JournalPLOS Biology·DateAug 23, 2011

Fine art in advertising can backfire

A new study by Boston College and the University of Houston found that fine art in advertising can be demoted to a mere product illustration, leading consumers to take a critical view of its message. Art loses its unique powers of communication when viewed as an ordinary image.

SourceBoston College·JournalPersonality and Social Psychology Bulletin·DateAug 23, 2011

Comparing soybean production methods

A study by USDA-ARS scientist Arnold Bruns compared twin-row and single-row soybean plantings and found that the former yielded more pods per plant without affecting seed yield. Twin-row production resulted in increased yields on both soils, but only minor economic benefits of $75 per hectare. The study highlights the importance of con...

SourceAmerican Society of Agronomy·JournalAgronomy Journal·DateAug 23, 2011

Stop signal for leukemia stem cells

Scientists found that high levels of insulin-like growth factor 1 receptor (IGF1R) expression are required for leukemia-initiating cell activity in T-cell acute lymphoblastic leukemia (T-ALL). Blocking IGF1R using inhibitors or reducing its expression significantly impaired leukemia stem cells' self-renewal capacity.

SourceHelmholtz Association·JournalJournal of Experimental Medicine·DateAug 23, 2011

Social science important for health-systems research

The article highlights the importance of social sciences in Health Policy and Systems Research (HPSR), emphasizing approaches to generalization, policy learning, and enhanced research quality. Social science perspectives are vital for acknowledging the complex nature of health policies and systems.

SourcePLOS·JournalPLOS Medicine·DateAug 23, 2011

Extreme morning sickness could lead to lifelong emotional, behavioral disorders in kids

Research finds children of mothers with extreme morning sickness may suffer from anxiety, bipolar disorder, and depression as adults. A UCLA-USC study suggests prolonged malnutrition and stress during fetal brain development could contribute to these lifelong neurobehavioral disorders.

SourceUniversity of California - Los Angeles Health Sciences·JournalJournal of Developmental & Behavioral Pediatrics·DateAug 23, 2011

A new nuance to neurons

Scientists at UCSF have discovered two distinct pools of vesicles in neurons, each with unique proteins that determine their behavior. The finding sheds new light on neurotransmitter packaging, transport, and release from neurons, potentially leading to breakthroughs in treating neurological diseases like Parkinson's.

Nickel nanoparticles may contribute to lung cancer

New research from Brown University finds that nickel nanoparticles can activate a cellular pathway that contributes to cancer in human lung cells. The study shows that smaller nanoscale particles are more harmful and potentially cancer-causing than larger microscale particles.

SourceBrown University·JournalToxicological Sciences·DateAug 23, 2011

Should films with smoking have adult ratings?

Two articles argue that film rating recommendations can create an economic incentive for producers to avoid tobacco imagery in youth-rated films. In contrast, other experts disagree, citing concerns about censorship, confounding factors, and the effectiveness of adult classification, suggesting alternative approaches to address public ...

SourcePLOS·JournalPLOS Medicine·DateAug 23, 2011

UK study shows ambulatory blood pressure measurements to be the most cost-effective way for diagnosing hypertension

A UK study published in The Lancet concludes that ambulatory blood pressure monitoring is the most cost-effective way to diagnose hypertension. This method, which involves repeated measurements throughout a 24-hour period, is more accurate and correlates better with cardiovascular outcomes than traditional clinic-based methods.

SourceThe Lancet_DELETED·JournalThe Lancet·DateAug 23, 2011

Sexist men and women -- made for each other

A new study by Jeffrey Hall and Melanie Canterberry suggests that women with negative attitudes towards their own gender are more likely to prefer men who adopt similar attitudes. Women who open to casual sex also tend to respond to aggressive courtship strategies.

SourceSpringer·JournalSex Roles·DateAug 23, 2011

Maintaining exercise when the cardiac rehab is complete

Researchers found that telephone counseling supporting exercise significantly increased patient adherence to an exercise program. The study, published in the American Journal of Preventive Medicine, showed that patients who received maintenance counseling exercises for at least 32 minutes more per week than those in the control group o...

SourceLifespan·JournalAmerican Journal of Preventive Medicine·DateAug 23, 2011

Brain tumors found to have a 2-tier system

Researchers have classified brain tumors into two distinct subgroups based on genetic analysis, revealing that one subgroup has a favorable prognosis while the other is more aggressive. The study provides valuable insights for better treatment options and could lead to targeted therapies for patients with ependymoma.

SourceHelmholtz Association·JournalCancer Cell·DateAug 23, 2011

2-year-old children understand complex grammar

Researchers found that 2-year-olds can identify correct images with complex verb sentences, suggesting infants know more about language structure than they can articulate. This study reveals the beginnings of grammar acquisition start earlier than previously thought and demonstrate children use grammar to understand new words.

SourceUniversity of Liverpool·JournalCognitive Science·DateAug 23, 2011