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Science News for January 17, 2013


U Alberta researchers move Barkhausen Effect forward

Researchers at the University of Alberta have developed a new technique to analyze the Barkhausen Effect, providing critical information for rapid prototyping of magnetic computational devices. The method measures magnetic jumps in a special 'vortex' pattern and converts it into a probe of magnetic interactions on an atomic scale.

SourceUniversity of Alberta·JournalScience·DateJan 17, 2013

Fighting sleep: UGA discovery may lead to new treatments for deadly sleeping sickness

Researchers at the University of Georgia have identified a specific receptor regulating calcium release in the trypanosome parasite, which could lead to new therapies for sleeping sickness. The discovery may also have applications beyond treating this disease, including new treatments for blood clotting disorders.

SourceUniversity of Georgia·JournalProceedings of the National Academy of Sciences·DateJan 17, 2013

Titan gets a dune 'makeover'

Research using Cassini spacecraft observations reveals that Titan's craters are being filled by exotic sand dunes, suggesting a much older surface. The team compared craters on Titan to those on Ganymede and found that Titan's craters were significantly shallower, indicating erosion from windblown sand.

Study findings have potential to prevent,reverse disabilities in children born prematurely

Researchers at OHSU Doernbecher Children's Hospital report that low blood flow to the premature brain does not cause irreversible loss of brain cells, but rather disrupts their ability to mature. This discovery opens up new avenues for potential therapies to promote regeneration and repair of the premature brain.

SourceOregon Health & Science University·JournalScience Translational Medicine·DateJan 17, 2013

UA explores promoting teen health via text message

A study of 177 teenagers found that most were open to receiving texts about health, but preferred tone and content over phrases like 'you should' or 'always.' Interactive quizzes, simple recipes, and links to websites were well-received. The study suggests text messaging as a supplement to in-person nutrition education for teens.

SourceUniversity of Arizona·JournalJournal of Nutrition Education and Behavior·DateJan 17, 2013

Deodorants: Do we really need them?

Research found that over 75% of people with the ABCC11 gene variant don't produce under-arm odour but use deodorant. However, only a quarter of these individuals realize they don't produce odour and don't use deodorant, while three quarters do. The study suggests that socio-cultural norms play a significant role in deodorant usage.

SourceUniversity of Bristol·JournalJournal of Investigative Dermatology·DateJan 17, 2013

Soft Lego built in the computer

A team of researchers has developed novel self-assembling materials, known as 'Soft Lego', which can form complex crystal structures with specific properties. These materials have potential applications in photonics and light guides, offering a new approach to the construction of materials at the macroscopic scale.

SourceUniversity of Vienna·JournalPhysical Review Letters·DateJan 17, 2013

In minutes a day, low-income families can improve their kids' health

A new study found that low-income children's participation in regular high-quality family mealtimes made a difference in their weight status. Researchers observed 200 family mealtimes and noted the importance of shared meals, mealtime behaviors, and socioeconomic factors on childhood obesity.

Botox beats steroids for painful foot condition, plantar fasciitis

A Mexican study suggests that Botox injections can provide faster relief from plantar fasciitis than steroid treatments, with patients showing significant improvement after six months. The study found that combining botulinum toxin A (Botox) with stretching exercises yielded better results for treating the painful foot condition.

SourceSAGE·JournalFoot & Ankle International·DateJan 17, 2013

Feed a cold, starve a fever…. and your worms!

Researchers found that during a nematode-induced inflammation, the immune system increases cholecystokinin levels, reducing leptin production, which drives defense mechanisms against the parasite. The study suggests a novel mechanism for parasite expulsion in intestinal infections.

SourcePLOS·JournalPLOS Pathogens·DateJan 17, 2013

Dietary shifts driving up phosphorus use

A new study led by McGill University researchers found that rising meat consumption and calorie intake have fueled a 38% increase in the world's per capita phosphorus footprint since the early 1960s. By reducing meat consumption, particularly beef, countries can significantly decrease demand for mined phosphorus.

SourceMcGill University·JournalEnvironmental Research Letters·DateJan 17, 2013

Learning the alphabet of gene control

Researchers at Karolinska Institutet have identified the DNA sequences that bind to over 400 proteins controlling gene expression, representing half of all human transcription factors. This discovery provides a valuable resource for furthering our understanding of the human genome and its role in disease development.

SourceKarolinska Institutet·JournalCell·DateJan 17, 2013

Power's punishing impact

Research by USC Marshall School of Business professor Scott Wiltermuth found that giving individuals a sense of power leads to a clear sense of right and wrong, causing them to punish transgressions more severely. This moral clarity can lead to organizational problems in the private and public sector.

SourceUSC Marshall School of Business·JournalAcademy of Management Journal·DateJan 17, 2013

Compensation negotiation among women in the workplace

A new study found that women who legitimize their compensation requests and communicate concern for organizational relationships are viewed more favorably by colleagues. This approach, rather than a direct negotiation style, is key to avoiding social backlash and successfully negotiating higher salaries. The study calls for further res...

SourceSAGE·JournalPsychology of Women Quarterly·DateJan 17, 2013

Factors linked with survival differences between Black, White kidney failure patients

Residence in areas with higher average household income was linked with improved survival for both Black and White kidney failure patients. However, in White patients, income inequality was associated with mortality, while in Black patients exclusively, residence in highly segregated areas was associated with increased mortality.

SourceAmerican Society of Nephrology·JournalJournal of the American Society of Nephrology·DateJan 17, 2013

Great Oxidation Event: More oxygen through multicellularity

Multicellular cyanobacteria developed over 2.3 billion years ago, coinciding with the Great Oxidation Event that increased atmospheric oxygen levels. This event is considered a significant climate shift, as multicellularity allowed for more efficient metabolism and paved the way for diverse life forms.

SourceUniversity of Zurich·JournalProceedings of the National Academy of Sciences·DateJan 17, 2013

Genetic admixture in southern Africa

Researchers found divergent mtDNA lineages in Bantu-speaking groups from Zambia, which were incorporated into their genepool through intermarriage with indigenous Khoisan women. These relic lineages demonstrate that Khoisan peoples survived until the present day despite the extinction of their source populations.

SourceMax-Planck-Gesellschaft·JournalAmerican Journal of Human Genetics·DateJan 17, 2013

Quail really know their camouflage

Researchers discovered that female quail select egg-laying substrates based on the unique characteristics of their own eggs, maximizing disruptive coloration to avoid predation. By matching their egg patterning with surrounding colors, quail reduce the likelihood of their eggs being detected and eaten by predators.

SourceCell Press·JournalCurrent Biology·DateJan 17, 2013

How the brain copes with multi tasking alters with age

A new study found that the brain's pattern of blood flow in the prefrontal cortex alters with age during multitasking. Healthy older people had a higher and more sustained increase in oxygenated haemoglobin, indicating increased brain activity. This change is associated with normal aging and may impact dual-task performance.

SourceBMC (BioMed Central)·JournalBMC Neuroscience·DateJan 17, 2013