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Science News for October 7, 2015


Could candle soot power electric vehicles?

New research shows that candle soot can be used to power the lithium batteries in electric cars, offering a cost-effective and scalable solution. The discovery opens up possibilities for using carbon in more powerful batteries, which could drive down production costs and increase efficiency.

SourceElsevier·JournalElectrochimica Acta·DateOct 7, 2015

Ravens cooperate -- but not with just anyone

A recent study by University of Vienna researchers found that ravens can cooperate to achieve common goals, such as sliding a platform with cheese into reach. However, they also exhibit a sophisticated way of keeping their partners honest, detecting and excluding cheaters from future cooperation.

SourceUniversity of Vienna·JournalScientific Reports·DateOct 7, 2015

Attention's place in the human cognitive architecture

Attention plays a critical role in structuring the internal world, prioritizing relevant thoughts and emotions for goal-oriented processing. The integrated theory proposes that attention is a cascade of effects beginning with stimulus detection, suppressing competing stimuli, and resetting upon completion.

SourceCell Press·JournalNeuron·DateOct 7, 2015

Climate change could benefit northern lizards

Research published in BMC Evolutionary Biology suggests that climate change could have a positive impact on Swedish sand lizard populations by allowing them to lay eggs earlier. This shift enables the females to better adapt to warming temperatures and improve the fitness of their offspring.

SourceBMC (BioMed Central)·JournalBMC Evolutionary Biology·DateOct 7, 2015

How the stick insect sticks (and unsticks) itself

Insects like stick insects can walk up vertical surfaces using adhesive pads on their feet, but scientists long believed that wet and dry feet required different mechanisms to adhere. New research reveals that the fluid on their feet plays a crucial role in controlling adhesion, with potential applications in modern devices.

SourceUniversity of Cambridge·JournalSoft Matter·DateOct 7, 2015

Researchers isolate novel urinary biomarkers that may indicate adrenal cancer

Researchers have discovered four unique metabolites in urine samples that can accurately distinguish between malignant and benign adrenal tumors. These biomarkers show high sensitivity (94.7%) and specificity (82.6%) for diagnosing cancer, potentially improving treatment decisions for patients with adrenal incidentalomas.

SourceAmerican College of Surgeons·JournalJournal of the American College of Surgeons·DateOct 7, 2015

A 'black'-sounding name makes people imagine a larger, more dangerous person

A study found that people's mind's-eye images of an unknown black male are similar to those of an unknown white male convicted of assault. The researchers also discovered that size and status are linked in opposite ways depending on the assumed race, with larger characters perceived as lower in social influence and respect.

SourceUniversity of California - Los Angeles·JournalEvolution and Human Behavior·DateOct 7, 2015

Newly discovered 'design rule' brings nature-inspired nanostructures one step closer

Scientists at Berkeley Lab have discovered a 'design rule' that enables the creation of peptoid nanosheets, flat structures composed of synthetic polymers. The rule allows for counter-rotating patterns in polymer adhesion, resulting in linear and untwisted backbones and larger, flatter nanosheet structures than those found in nature.

The perfect match might be the imperfect one

A new study shows that half-matched donor bone marrow transplants can produce similar outcomes to full-match transplants, offering an alternative donor source for minorities and those without access to full matches. The Two-Step protocol used in the study may be a key factor in its success.

SourceThomas Jefferson University·JournalBiology of Blood and Marrow Transplantation·DateOct 7, 2015

Researchers need to pay attention to differences in self-control

A new study suggests that public policies should account for individuals' varying levels of self-control when assessing their effectiveness. The researchers recommend using domain-specific measures to better understand consumer behavior and decision-making. This approach can facilitate the development of more effective interventions, p...

SourceRice University·JournalJournal of Public Policy & Marketing·DateOct 7, 2015

Parents influence children's play of violent video games, according to Iowa State study

According to a new study by Iowa State University, parents' emotional states influence their children's behavior when it comes to playing violent video games. Warm and restrictive parenting styles can limit gaming time, while anxious and emotional parents may have the opposite effect. The research found that authoritative parents were ...

SourceIowa State University·JournalJournal of Consumer Affairs·DateOct 7, 2015

'Chromosomal Chaos:' Complex array of mutations found in rare, aggressive leukemia

Researchers at the University of Pennsylvania School of Medicine identified a previously unknown genomic landscape in Sezary syndrome, a rare and aggressive leukemia. The study reveals recurrent loss-of-function mutations in genes regulating epigenetic pathways, including ARID1A, which occurred in over 40% of the genome studied.

SourceUniversity of Pennsylvania School of Medicine·JournalNature Communications·DateOct 7, 2015

Exposure to common flame retardants may contribute to attention problems in children

A recent study has found a strong association between prenatal exposure to common flame retardants and attention problems in children aged three through seven. The researchers followed 210 mother-child pairs from birth through early childhood and assessed child behavior using standardized rating scales, revealing that those with the hi...

SourceColumbia University's Mailman School of Public Health·JournalNeurotoxicology and Teratology·DateOct 7, 2015

Wastewater treatment plants not responsible for spreading antimicrobial resistance

New Danish research reveals that wastewater treatment plants contain a vast pool of genes providing bacteria with antimicrobial resistance, but these genes are rarely found in hazardous bacteria. The study challenges the common perception that wastewater treatment plants are hotbeds for the spread of antimicrobial resistance genes.

SourceTechnical University of Denmark·JournalNature Communications·DateOct 7, 2015

Study details prevalence of PTSD in Vietnam War women vets

Research shows that posttraumatic stress disorder (PTSD) affects approximately 20.1% of women who served in Vietnam, with those exposed to sexual harassment or job performance pressure being at higher risk. The study emphasizes the importance of clinicians screening for PTSD symptoms and sensitivity to non-combat wartime experiences.

SourceJAMA Network·JournalJAMA Psychiatry·DateOct 7, 2015

CAMH survey shows over half of workers with depression do not recognize need for treatment

A study by CAMH found that 52.8% of workers with significant depressive symptoms did not recognize a need for help, leading to a 33% decrease in work productivity if this barrier is removed. Employers can target these barriers to increase the use of mental health services among workers.

SourceCentre for Addiction and Mental Health·JournalJournal of Occupational and Environmental Medicine·DateOct 7, 2015

Mormon + Mormon = Higher home price

A study by University of California, Riverside researcher Timothy Gubler found that home sellers who use a real estate agent from the same Mormon church congregation earn an average of $4,000 more than those without such an affiliation. This increase occurs without significantly impacting market time or sale probability.

Predictive policing substantially reduces crime in Los Angeles during months-long test

A UCLA-led team developed a mathematical model to predict crime hotspots, which was tested in Los Angeles and Kent, England. The model accurately predicted crime locations more often than human analysts, leading to a significant reduction in crime rates in Los Angeles, with potential annual savings of $9 million.

SourceUniversity of California - Los Angeles·JournalJournal of the American Statistical Association·DateOct 7, 2015

Treating aortic aneurysms through virtual reality

A new virtual reality approach has been developed to improve the treatment of aortic aneurysms by providing more accurate visualization of the area needing treatment. The approach uses 3D images and simulations to predict the risk of rupture and optimize treatment options, including open surgery and endovascular grafting.

48-million-year-old horse-like fetus discovered in Germany

A well-preserved 48-million-year-old horse-like fetus was discovered near Frankfurt, Germany, revealing significant details about the fossil record of a placental mammal. The study suggests that the reproductive system of early horses may have been highly developed during the Paleocene epoch.

SourcePLOS·JournalPLOS ONE·DateOct 7, 2015

NASA measuring the pulsating aurora

Researchers used satellite and ground-based measurements to study pulsating auroras, finding that low-energy secondary electrons play a crucial role in their structure and shape. The discovery suggests that these electrons may be more important than previously thought in creating the glowing lights of auroras.

Review addresses value and waste in biomedical research

A recent review of the effects of a series of biomedical research reviews found that some initiatives have reduced waste and increased value, but more needs to be done. The reviewers questioned whether it's time to reconsider the current system for awarding research funding, which may not reflect changing biomedical research needs.

SourceUniversity of Plymouth·JournalThe Lancet·DateOct 7, 2015

A village of bacteria to help frogs fight disease

Researchers at Virginia Tech found that naturally occurring bacteria on a frog's skin can respond to infection and adjust their structure and function to compensate for it. The study suggests that the whole community of bacteria is important, not just a single protective bacterium. This discovery offers hope in limiting the impact of c...

SourceVirginia Tech·JournalPLOS ONE·DateOct 7, 2015

Medical diagnosis: Will brain palpation soon be possible?

Inserm researchers have developed a noninvasive brain imaging method using MRI that provides the same information as physical palpation, allowing for early diagnosis of brain tumors or Alzheimer's disease. The technique uses noise correlation to detect natural shear waves in the brain, enabling building images of the brain's elasticity.

SourceINSERM (Institut national de la santé et de la recherche médicale)·JournalProceedings of the National Academy of Sciences·DateOct 7, 2015

Experts recommend assessing individual benefits, risks of menopausal therapies

The Endocrine Society published a Clinical Practice Guideline on treating menopausal symptoms, recommending that women assess their individual benefits and risks of hormone therapy. The guideline suggests using various therapies, including hormonal and non-hormonal options, to manage symptoms such as hot flashes and genitourinary issues.

SourceThe Endocrine Society·JournalThe Journal of Clinical Endocrinology & Metabolism·DateOct 7, 2015