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Science News Archive December 2014 - Page 8


Page 8 of 28

Policy action urgently needed to protect Hawaii's dolphins

A new study from Duke University finds that a combination of federal regulations and local community-based conservation measures are urgently needed to protect spinner dolphins in Hawaii. The research suggests that managing the bays where dolphins rest should be tailored to each bay's unique use, rather than relying on a one-size-fits-...

SourceDuke University·JournalJournal of Sustainable Tourism·DateDec 17, 2014

A lot or a little

Researchers found that wolves can discriminate between different food quantities, but dogs struggled with this task, suggesting a loss of numerical competence through domestication. The study's findings have implications for our understanding of canine cognition and the effects of domestication on animal behavior.

SourceUniversity of Veterinary Medicine -- Vienna·JournalFrontiers in Psychology·DateDec 16, 2014

Home- vs. mobile clinic-based HIV testing and counseling in rural Africa

A new study published in PLOS Medicine found that home-based HIV testing and counseling services can achieve higher participation rates among rural Africans. The researchers compared two community approaches: home-based and mobile clinic-based services. They found that the home-based approach reached more first-time testers, particular...

SourcePLOS·JournalPLOS Medicine·DateDec 16, 2014

Top blood transfusion-related complication more common than previously reported

Researchers found that postoperative TRALI is significantly underreported but occurs in 1.4 percent of surgical patients, while TACO remains a risk at 4 percent, particularly in those with increased volume of blood transfused and advanced age. The studies provide new insights into the incidence of these life-threatening complications.

SourceAmerican Society of Anesthesiologists·JournalAnesthesiology·DateDec 16, 2014

Discovery aims to fight destructive bee disease

Researchers at the University of Guelph have identified a toxin released by the pathogen Paenibacillus larvae that causes American foulbrood disease. The study found a lead-based inhibitor against this toxin, which could lead to natural and effective approaches for fighting bee brood diseases.

SourceUniversity of Guelph·JournalJournal of Biological Chemistry·DateDec 16, 2014

Thumbs-up for mind-controlled robotic arm

A paralysed woman, Jan Scheuermann, has controlled a robotic arm using complex hand movements, achieving 10-dimensional control. This breakthrough enables her to interact with objects in different ways, simulating human-like hand use.

SourceIOP Publishing·JournalJournal of Neural Engineering·DateDec 16, 2014

Cost of cloud brightening for cooler planet revealed

A new study has found that the 'Rayleigh Jet' technique can increase cloud reflectance by 5% with minimal energy consumption, using 30 megawatts of power, about equivalent to two large ships. This method is a reversible geoengineering approach proposed to mitigate rising global temperatures.

SourceUniversity of Manchester·JournalPhilosophical Transactions of the Royal Society of London (A )·DateDec 16, 2014

Microwave imaging of the breast

Researchers have developed a microwave imaging system that can produce 3D images of the breast, including the location of cancerous tissue. The system uses dielectric properties to differentiate between normal and cancerous tissue, offering better specificity than current methods.

SourceAmerican Institute of Physics·JournalReview of Scientific Instruments·DateDec 16, 2014

Shed post-Christmas pounds just by breathing

Researchers calculate that lungs excrete 8.4kg of CO2 when 10kg of fat is fully oxidized, shedding unwanted pounds. By breathing, individuals can lose up to 200 grams of carbon daily, with exercise further increasing weight loss through increased metabolic rate.

SourceBMJ Group·JournalThe BMJ·DateDec 16, 2014

DNA sheds light on why largest lemurs disappeared

A DNA study from Duke University sheds light on the extinction of giant lemurs, finding that their smaller population sizes made them more susceptible to extinction. The research suggests that lessons learned from ancient DNA can be useful in protecting remaining species.

SourceDuke University·JournalJournal of Human Evolution·DateDec 16, 2014