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Science News for October 29, 2014


Nanosafety research: The quest for the gold standard

Poorly executed nanosafety experiments have led to a lack of new knowledge, with most projects being irreproducible due to inadequate particle characterization. The 'NanoScreen' programme aims to address this issue by providing pre-validated methods for lab experiments using standardized test materials.

SourceSwiss Federal Laboratories for Materials Science and Technology (EMPA)·JournalAngewandte Chemie International Edition·DateOct 29, 2014

The science of charismatic voices

A study by Rosario Signorello found that speakers with a wide range of frequency variation in their voices are more likely to be perceived as dominant. The researchers also discovered that speakers with a low fundamental rate of vocal fold vibration are perceived as more dominant than those with high F0 frequencies.

Evolution of competitiveness

A study published in Nature Communications reveals that the evolution of competitiveness tends to diversify, with some individuals avoiding competition and others investing heavily. This divergence can lead to population extinction if external pressures fuel an 'arm's race' towards higher competitiveness.

SourceUniversity of Bonn·JournalNature Communications·DateOct 29, 2014

Supersonic laser-propelled rockets

Researchers at Optica have developed a hybrid approach that integrates laser-ablation propulsion with gas blasting nozzles, increasing thrust efficiency. This innovation enables supersonic speeds for launching small satellites and accelerating aircraft to Mach 10 and beyond.

SourceOptica·JournalApplied Optics·DateOct 29, 2014

Decades of research: Effectiveness of phone counseling for cancer patients still unknown

A recent study published in Psycho-Oncology highlights the need for well-designed trials to determine the effectiveness of phone counseling interventions for cancer survivors. The research found that while some studies showed significant improvement, the results were not robust across multiple end points or studies.

Ghrelin stimulates an appetite for drinking alcohol

A new study published in Biological Psychiatry found that ghrelin increases alcohol craving in heavy drinkers, suggesting a potential target for future treatments. The study, conducted in humans, built on previous animal research and found significant effects of ghrelin on alcohol desire.

SourceElsevier·JournalBiological Psychiatry·DateOct 29, 2014

Autism's genetic architecture comes into focus

A groundbreaking study has identified over two dozen high-confidence autism genes, shedding light on the disorder's genetic architecture. The research also reveals a difference in genetic basis between 'higher-IQ' and 'lower-IQ' autism, with implications for early interventions.

SourceSimons Foundation·JournalNature·DateOct 29, 2014

Clean smell doesn't always mean clean air

A Drexel University researcher studied indoor aerosol spikes caused by cleaning products and air fresheners, revealing the formation of secondary organic aerosols (SOAs) due to limonene reactions. The study suggests a significant impact on indoor air quality, warranting further public health research.

SourceDrexel University·JournalEnvironmental Science & Technology·DateOct 29, 2014

Kidney cancer in Central Europe

A new study by CAGEKID consortium reveals a strong connection between kidney cancer and aristolochic acid, an ingredient in herbal remedies. The research found that genetic changes associated with this type of cancer were observed in patients from Romania with high frequency, suggesting exposure to aristolochic acid as a potential cause.

SourceEuropean Molecular Biology Laboratory·JournalNature Communications·DateOct 29, 2014

Walking workstations improve physical and mental health, builds healthier workplace

A new study found that walking workstations significantly improve both physical and mental well-being during work hours. Participants showed increased satisfaction and reduced stress, boredom, and weight-related issues despite having varying levels of exercise habits or body mass index.

SourceIndiana University-Purdue University Indianapolis School of Science·JournalJournal of Occupational Health Psychology·DateOct 29, 2014

Projecting a robot's intentions

Researchers at MIT have created a new visualization system that projects a robot's intentions in real-time, enabling engineers to better understand and optimize their decisions. This technology has the potential to significantly improve the development of self-driving cars, package-delivering drones, and other autonomous vehicles.

Can social media help stop the spread of HIV?

Researcher Sean Young suggests that social media can be used to monitor and predict HIV transmission by analyzing psychological and health-related data from users. This approach has shown promising results in identifying individuals at risk of HIV transmission and increasing awareness of the disease.

SourceCell Press·JournalTrends in Microbiology·DateOct 29, 2014

Brain responses to disgusting images help reveal political leanings

A study published in Current Biology found that people's reactions to repulsive images can forecast their political orientation. The strength of a person's reaction was enough to predict an individual's political ideology with high accuracy. This research suggests that neural responses associated with disgust may be inherited and linke...

SourceVirginia Tech·JournalCurrent Biology·DateOct 29, 2014

Meiotic cell division 'the other way round'

Researchers discovered an inversion of the standard meiotic phases in plant species with holocentric chromosomes, enabling them to distribute chromosomes correctly. This unique strategy involves an association between homologous non-sister chromatids and thin chromatin threads prior to the second meiotic division.

SourceUniversity of Vienna·JournalNature Communications·DateOct 29, 2014

Planet-forming lifeline discovered in a binary star system

Astronomers have discovered a 'wheel in a wheel' of dust and gas in the GG Tau-A binary star system, revealing a sustaining lifeline between the two discs. This finding supports planet formation by providing a mechanism for material to be transferred from the outer disc to the inner disc.

SourceESO·JournalNature·DateOct 29, 2014

Study sheds light on genetic architecture of kidney cancer

A new genetic study reveals a link between exposure to aristolochic acid and incidence of clear-cell renal cell carcinoma, the most common form of kidney cancer. The research, conducted on 94 patients from Europe, suggests that this plant compound may be a significant risk factor for kidney cancer, particularly in Central Europe.

SourceMcGill University·JournalNature Communications·DateOct 29, 2014

Go straight and publish: From Barcode of Life Data Systems to scholarly publishing systems

A recent study leveraged BOLD specimen data to uncover new records of locality, provinces, territories, and states for Nearctic species of Microgastrinae wasps. The novel workflow enables researchers to utilize the vast amount of data stored on BOLD platforms, accelerating publication and dissemination of biodiversity-related research.

SourcePensoft Publishers·JournalBiodiversity Data Journal·DateOct 29, 2014

New leopard frog species discovered in New York

A new species of leopard frog, Rana kauffeldi, has been identified in the New York City metropolitan area through a combination of acoustic and genetic data. The species is found in open-canopied wetlands with upland patches and its range extends from central Connecticut to northeastern North Carolina.

SourcePLOS·JournalPLOS ONE·DateOct 29, 2014

Accident prone eczema patients

Adults with eczema are more likely to experience accidental bone fractures and other injuries, according to a new Northwestern University study. The increased risk may be linked to the side effects of steroids and sedating antihistamines commonly prescribed for eczema.

SourceNorthwestern University·JournalJAMA Dermatology·DateOct 29, 2014

Why plants don't get sunburn

Researchers found that plants produce special molecules called sinapate esters to protect themselves from harsh ultraviolet-B radiation. These molecules appear to block UVB radiation from penetrating deeper into leaves, hindering plant growth. The study provides insight into the mechanics of how these natural plant sunscreens work.

SourceAmerican Chemical Society·JournalJournal of the American Chemical Society·DateOct 29, 2014