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Science News Archive November 2011 - Page 25


Page 25 of 28

Caucasians who avoid sun exposure more likely to be vitamin D deficient, Stanford study suggests

A Stanford study found that Caucasians who avoid sun exposure have lower blood levels of vitamin D, with a 40% prevalence among all participants increasing to 53% and 56% among those wearing long sleeves and staying in the shade. The use of sunscreen did not significantly affect vitamin D levels due to insufficient application.

SourceStanford Medicine·JournalCancer Causes & Control·DateNov 3, 2011

Secluding aggressive young offenders is always the last resort says 4-country study

A four-country study published in the Journal of Psychiatric and Mental Health Nursing found that verbal intervention was the favoured technique for dealing with aggressive episodes involving young offenders. The research team also recommended continuous education, sufficient resources, and further studies to improve practices.

SourceWiley·JournalJournal of Psychiatric and Mental Health Nursing·DateNov 3, 2011

A new definition for periprosthetic joint infection

Researchers at Thomas Jefferson University have developed a new definition for periprosthetic joint infection (PJI) to help diagnose patients with suspected PJI. The criteria include sterile sampling, biomarker testing, and histological analysis to identify virulent organisms like Staphylococcus aureus.

SourceThomas Jefferson University·JournalClinical Orthopaedics and Related Research·DateNov 3, 2011

Millisecond pulsar in spin mode

Scientists have found the first gamma-ray pulsar in a globular cluster, J1823-3021A, which is also the youngest millisecond pulsar discovered to date. Its high luminosity and strong magnetic field challenge current theories on its formation.

SourceMax-Planck-Gesellschaft·JournalScience·DateNov 3, 2011

Health check on the road

A research team at TUM has developed a sensor system that monitors drivers' vital signs, including heart rate, skin conductance, and oxygen saturation, to prevent fainting spells or heart attacks. The system uses simple sensors in the steering wheel and can initiate measures such as phone call blocking or emergency braking if necessary.

Nano-tech makes medicine greener

Researchers at the University of Copenhagen have developed a nano-tech method to test new medicines in extremely small volumes, allowing for faster and cheaper drug development. The technique uses self-assembling systems made from biological materials, significantly reducing environmental impact.

SourceUniversity of Copenhagen·JournalNature Nanotechnology·DateNov 3, 2011

Latex gloves lead to lax hand hygiene in hospitals, study finds

A study of over 7,000 patient contacts found that healthcare workers wearing latex gloves were less likely to clean their hands before and after patient contact. The researchers call this phenomenon the 'Dirty Hand in the Latex Glove,' highlighting an opportunity for improved hand hygiene practices when using gloves.

SourceSociety for Healthcare Epidemiology of America·JournalInfection Control and Hospital Epidemiology·DateNov 3, 2011

Unraveling Batten disease

Researchers have discovered that a mutation in the CLN3 gene disrupts protein trafficking, leading to lysosome overflow and neuronal death in Batten disease. The findings may form the basis for a new therapy by targeting the kinase function of CLN3.

SourceWeizmann Institute of Science·JournalJournal of Cell Biology·DateNov 2, 2011

Understanding emotions without language

Researchers found that Yucatec Maya speakers and German speakers performed similarly when identifying mixed-emotion faces. The study suggests that emotions have evolved as basic human mechanisms, unaffected by language. This discovery challenges the idea that language plays a crucial role in understanding emotions.

SourceMax-Planck-Gesellschaft·JournalEmotion·DateNov 2, 2011

Born to roar

Researchers found that the structure of lion and tiger vocal folds, including fat and viscoelastic properties, determines the low-frequency roars. The study challenges previous assumptions about the causes of loud roaring in these big cats.

SourceUniversity of Utah·JournalPLOS ONE·DateNov 2, 2011

Women's chin, abdomen are good indicators of excessive hair growth

Researchers have found that examining the chin and upper/lower abdomen is an accurate and minimally invasive way to screen for excessive hair growth in women, which can be up to 80% effective. This method has significant implications for diagnosing PCOS and related health risks such as insulin resistance, diabetes, and heart disease.

SourceMedical College of Georgia at Augusta University·JournalFertility and Sterility·DateNov 2, 2011