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Science News Archive May 2015 - Page 21


Page 21 of 31

Malaria testing yet to reach its potential

A new model systematically evaluates malaria treatment programs in multiple countries, finding no country shows reductions in malaria treatment associated with testing as hypothesized. Contextual factors such as access to care and stockouts largely explain the variation in program experiences.

SourceUppsala University·JournalMalaria Journal·DateMay 12, 2015

Nerve cells in the fast lane

Dopamine-producing neurons play a crucial role in signal transmission, influencing motor control, reward behaviour, motivation, and impulse control. The discovery reveals that glutamate facilitates rapid signal transmission, enabling the brain to respond quickly to stimuli.

SourceRuhr-University Bochum·JournalNature Neuroscience·DateMay 12, 2015

Baboons prefer to spend time with others of the same age, status and even personality

New research shows that chacma baboons associate with others of similar age, dominance rank, and even personality type. This homophily may limit the dissemination of new knowledge to the wider troop. The study tracked two baboon troops over several months and found bolder animals tend to spend more time with like-minded individuals.

SourceUniversity of Cambridge·JournalRoyal Society Open Science·DateMay 12, 2015

A helping paw for a sinking rat

Researchers found that rats learn to help a distressed cagemate gain access to safety in exchange for rewards, indicating empathy-like feelings. Those with previous water experiences were quicker to learn this skill.

SourceSpringer·JournalAnimal Cognition·DateMay 12, 2015

Kissing cousins, arranged marriages and genetic diversity

A study examines the effects of arranged marriages on genetic diversity, finding that Rindi people's relaxed compliance with their marriage rules produces a genetic diversity similar to random mating. The researchers developed an open-source tool called SMARTPOP to analyze other marriage rules worldwide.

Delta Cephei's hidden companion

A team of researchers has discovered a hidden companion to Delta Cephei, a key variable star used for measuring cosmic distances. The companion, with a mass around 10 times lower than Delta Cephei's, was detected using high-precision Doppler spectroscopy and is likely to impact the accuracy of distance measurements.

SourceUniversité de Genève·JournalThe Astrophysical Journal·DateMay 12, 2015

New insights into the male bias of autism

Research published in Molecular Autism found that male toddlers with autism have distinct brain structure changes compared to females, suggesting separate evaluation and early developmental markers. Additionally, studies suggest a 'female protective effect' through sex differences in genes and prenatal hormones.

SourceBMC (BioMed Central)·JournalMolecular Autism·DateMay 12, 2015

Male hormones help lemur females rule

Researchers found that female lemurs have higher testosterone levels in some species, leading to dominant behavior and challenging traditional gender roles. This discovery suggests that hormones play a role in female dominance in these animals.

SourceDuke University·JournalScientific Reports·DateMay 12, 2015

Rethinking the rebound: Unexpected effects of rejection

A new study found that rejection by an attractive man led women to derogate and reject unattractive men, highlighting the importance of assurance in social connections. The researchers replicated the effect, suggesting that immediate acceptance may not be the primary goal after rejection.

SourceSAGE·JournalSocial Psychological and Personality Science·DateMay 12, 2015

Separating rare earth metals with UV light

Researchers at KU Leuven have developed a new method to separate rare earth metals europium and yttrium using UV light. This process recovers over 95% of the europium from a liquid mixture, making it an efficient alternative to traditional methods.

SourceKU Leuven·JournalGreen Chemistry·DateMay 11, 2015

Vying for seats in the C-suite: Marketing and PR's focus is too narrow, Baylor study finds

A Baylor University study found that marketing and PR teams often compete for limited C-suite spots due to perceived similarities in their roles. The research highlights distinct contributions of corporate communications and marketing, suggesting both groups need to build internal relationships to educate colleagues on their value.

SourceBaylor University·JournalJournal of Communication Management·DateMay 11, 2015