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Science News for October 17, 2013


Market bubbles may be predictable, controllable

A new study suggests that market bubbles can be predicted and controlled using chaos theory. Researchers found that extreme events, such as market crashes, follow power law distributions, allowing for early intervention to prevent them. Tiny nudges may make a big difference in controlling these events.

SourceDuke University·JournalPhysical Review Letters·DateOct 17, 2013

Pioneering use of oral cholera vaccine during outbreak

A mass vaccination campaign of over 300,000 people in Guinea demonstrated the feasibility of using an oral cholera vaccine during a cholera outbreak. The campaign achieved high coverage rates and was well accepted by the local community.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateOct 17, 2013

Complex diseases traced to gene copy numbers

Researchers connected human complex diseases to specific genes using zebrafish models, identifying a powerful tool for unraveling rare genetic conditions. The study shows that copy-number variants can affect multiple genes simultaneously, but manipulation of individual genes in zebrafish reveals their contribution to disease pathology.

SourceDuke University·JournalAmerican Journal of Human Genetics·DateOct 17, 2013

Uncovering liquid foam's bubbly acoustics

Researchers discovered liquid foams have low effective sound velocities, ranging from 20 to 60 meters per second, lower than its constituents. The type of foaming solution influences acoustic properties, with shaving foam showing a higher effective sound velocity.

SourceSpringer·JournalThe European Physical Journal E·DateOct 17, 2013

All probiotics are not the same in protecting premature infants from common, life-threatening illness

Researchers at UC Davis found that probiotics containing Bifidobacterium infantis effectively prevent necrotizing enterocolitis in premature infants. The study showed increased bifidobacteria levels and decreased harmful bacteria in breastmilk-fed babies, indicating potential benefits of probiotic therapy.

SourceUniversity of California - Davis Health·JournalThe Journal of Pediatrics·DateOct 17, 2013

Virginia Tech researchers publish study on jellyfish energy consumption that will improve bio-inspired robotic designs for Navy

Researchers discovered how jellyfish move with lowest cost of transport, using a critical pause between contraction and expansion to create a vortex that propels them forward. This feat allows the creature to travel 30% farther each stroke cycle, reducing metabolic energy demand by swimming muscles.

SourceVirginia Tech·JournalProceedings of the National Academy of Sciences·DateOct 17, 2013

Human neutrophil peptide-1: A new anti-leishmanial drug candidate

Researchers have identified Human Neutrophil Peptide-1 (HNP-1) as a potential treatment for leishmaniasis, a vector-borne disease affecting young individuals worldwide. HNP-1 has been shown to directly kill Leishmania parasites and increase the lifespan of neutrophils, reducing their susceptibility to infection.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateOct 17, 2013

Gene regulation differences between humans and chimpanzees more complex than thought

Researchers at the University of Chicago have discovered that mRNA expression levels do not always reflect differences in protein expression between humans and chimpanzees. This finding suggests that protein expression levels may evolve under greater evolutionary constraint, potentially due to a yet-uncharacterized compensation mechanism.

World's first mapping of America's rare plants

A comprehensive botanical data set reveals that stable climates and small habitat areas are key factors in the distribution of rare plant species. The study highlights the importance of preserving these regions from human-induced climate changes, which could threaten the survival of many unique species.

SourceAarhus University·JournalEcology Letters·DateOct 17, 2013

Depression twice as likely in migraine sufferers

A study of over 67,000 Canadians found that depression is nearly twice as prevalent among migraine sufferers as the general population, particularly among younger women and those with difficulty performing daily activities. The study also highlights a higher risk of suicidal ideation among young migraineurs.

SourceUniversity of Toronto·JournalDepression Research and Treatment·DateOct 17, 2013

Next-generation gene sequencing can identify invasive carp species in Chicago area waterways

Researchers developed precise monitoring systems by analyzing gut microbiota of invasive Asian carp and native gizzard shad, revealing key differences between species. The study uses next-generation gene sequencing technology to identify biomarkers for each species, promising a new approach to preventing their spread in the Great Lakes.

Weighing up blood-thinners: Is warfarin always the best choice?

A new study by Joyce You found that newer anticoagulants are more cost-effective than warfarin when patients' therapeutic ranges drop below 60%. Warfarin is most cost-effective when patients are within the successful range for more than 70% of the time. The study's results have implications for clinicians and policymakers.

SourceSpringer·JournalJournal of General Internal Medicine·DateOct 17, 2013

Scientists prove Heisenberg's intuition correct

An international team of scientists has provided proof of Heisenberg's error-disturbance relation, describing a reciprocal relation between position accuracy and momentum disturbance. The work has important implications for quantum cryptography and computing, reaffirming the security of quantum-encrypted messages.

SourceUniversity of York·JournalPhysical Review Letters·DateOct 17, 2013

To sleep, perchance to clean

A recent study published in Science shows that the brain's unique glymphatic system, responsible for removing waste, is highly active during sleep. This process clears away toxic proteins associated with Alzheimer's disease, suggesting a vital function of sleep in maintaining brain health.

Social psychologists say war is not inevitable, psychology research should promote peace

Researchers from the UMass Amherst Psychology of Peace and Violence program argue that social psychology can be used to promote nonviolence and peace. They emphasize the importance of increasing empathy and understanding of others in reducing conflict, and highlight the need for more research on constructive approaches to violence.

SourceUniversity of Massachusetts Amherst·JournalAmerican Psychologist·DateOct 17, 2013

Marmoset monkeys know polite conversation

Marmosets exhibit cooperative vocal exchange in a conversational manner, taking turns without interruptions, and follow unspoken rules of etiquette. This unique behavior is distinct from other animals and shares similarities with human communication patterns.

SourceCell Press·JournalCurrent Biology·DateOct 17, 2013

Is a constructive conservation the last chance for biodiversity?

The constructive conservation framework combines strategies for preserving biodiversity in both natural and designed landscapes. By prioritizing ecologically viable habitats, actively creating new ecosystems, and accepting novel ecosystems as natural landscapes, researchers aim to maximize the effective use of resources. This approach ...

SourceTechnische Universitat Darmstadt·JournalFrontiers in Ecology and the Environment·DateOct 17, 2013

Will health insurance expansion cut ER use? U-M study in teens & young adults may help predict

A new University of Michigan study suggests that the newly insured will make more outpatient visits and fewer emergency room (ER) visits than they do today. The study found that clinic visits rose significantly among adolescents after the Children's Health Insurance Program (CHIP) went into effect, while ER visits remained flat. Howeve...

SourceMichigan Medicine - University of Michigan·JournalAcademic Emergency Medicine·DateOct 17, 2013