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Science News Archive January 2014 - Page 11


Page 11 of 28

Men forget most

A recent study found that men are more likely to experience memory problems than women, with 8 out of 9 questions showing higher rates of forgetting among men. This phenomenon holds true across all ages, from 30 to 60 years old, and is associated with higher education levels and a lower risk of dementia.

A guppy's spots formed by layers of color cells

A study published in PLOS ONE reveals that multiple pigment cell types from different skin layers contribute to the formation of guppies' colorful spots. The research found that transparent, reflective, and iridescent cells called iridophores play a crucial role in these patterns.

SourcePLOS·JournalPLOS ONE·DateJan 22, 2014

Better protein capture a boon for drug manufacturers

Researchers create method to pinpoint locations for single proteins and improve chromatography process, leading to faster and cheaper drug production. This breakthrough could widen bottleneck in pharmaceutical industry and expand application to other industries.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateJan 22, 2014

Disappointing Alzheimer's trial yields new ideas

A recent Alzheimer's trial failed to produce cognitive improvement for volunteers, but researchers have identified key takeaways to inform the development of new treatments. Lessons learned include testing drugs in individuals building up amyloid plaques, giving higher doses safely, and combining disease-modifying treatments.

SourceBrown University·JournalNew England Journal of Medicine·DateJan 22, 2014

Exposure to cold temperatures can help boost weight loss

Researchers found that mild cold exposure can significantly affect energy expenditure over sustained time periods, suggesting a potential benefit for weight loss. Brown fat, a heat-generating organ thought to be active only in infants, is also present in adults and can be activated by cold temperatures.

SourceCell Press·JournalTrends in Endocrinology and Metabolism·DateJan 22, 2014

Flies with brothers make gentler lovers

Researchers at Oxford University found that flies living with their brothers cause less harm to females during courting than those living with unrelated flies. This is because related flies are more relaxed in their mating approach and spend less time harassing females, resulting in fewer fights and reduced fecundity for females.

SourceUniversity of Oxford·JournalNature·DateJan 22, 2014

Increase in hemlock forest offsetting effect of invasive hemlock woolly adelgid for now

Despite devastating effects of the invasive insect in southern Appalachians, increasing tree density associated with reforestation and succession may have offset negative impacts at a regional scale. Hemlock trees do not have natural defenses against hemlock woolly adelgid, resulting in high levels of tree mortality.

SourceUSDA Forest Service - Northern Research Station·JournalBiological Invasions·DateJan 22, 2014

Holographic diagnostics

Researchers from the University of Cambridge have developed portable, inexpensive medical tests using color-changing 'smart' holograms that can detect a wide range of compounds in blood, breath, urine, saliva or tear fluid.

SourceUniversity of Cambridge·JournalAdvanced Optical Materials·DateJan 22, 2014

Nighttime smartphone use zaps workers' energy

A Michigan State University study found that nighttime smartphone usage for work purposes leads to decreased productivity and increased fatigue the next day. The research suggests that smartphones' blue light emission disrupts melatonin production, hindering sleep recovery.

SourceMichigan State University·JournalOrganizational Behavior and Human Decision Processes·DateJan 22, 2014

Computer simulation of blood vessel growth

Researchers created a computer simulation to accurately predict blood vessel growth in the laboratory. By studying real blood vessels from rats, they found that denser extracellular matrix impairs vessel formation. This breakthrough aims to develop new treatments for diseases related to blood flow and cancer metastasis.

SourceUniversity of Utah·JournalPLOS ONE·DateJan 22, 2014

Number of cancer stem cells might not predict outcome in HPV-related oral cancers

A new study from Ohio State University Comprehensive Cancer Center found that the quality of cancer stem cells, rather than their quantity, may be associated with better survival rates in patients with HPV-related oral cancers. Researchers discovered that HPV-positive tumors had fewer cancer stem cells, contrary to previous expectations.

New Penn index detects early signs of deviation from normal brain development

Researchers at the University of Pennsylvania have developed a brain development index from MRI scans that captures normal brain maturation patterns. The study shows a relationship between cognitive development and physical changes in the developing young brain, allowing for early detection of subtle developmental abnormalities.

Not safe at home

A new study found that tag plays at home plate have the highest injury rate in professional baseball, occurring 4.3 times more often than other base-running plays. The researchers suggest adopting the collegiate rule to reduce collisions and protect both catchers and baserunners.

SourceAtrium Health Wake Forest Baptist·JournalInternational Journal of Sports Medicine·DateJan 21, 2014

New test targets salmonella

Researchers at Rice University have developed a novel biosensor that can detect multiple strains of salmonella pathogens in food quickly and easily. The sensor uses microcantilevers decorated with peptides to identify the presence of specific bacteria, delivering results within minutes and outperforming existing standard tests.

SourceRice University·JournalAnalytical Chemistry·DateJan 21, 2014