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Science News for March 18, 2010


Tryptophan-enriched diet reduces pig aggression

A study by US Department of Agriculture researchers found that a tryptophan-enriched diet reduces aggression in young female pigs, making them calmer and easier to manage. The supplement raised blood concentrations of serotonin, a calming neurotransmitter, leading to reduced behavioral activity and aggression.

A bleak outlook for social science?

Experts warn of a bleak outlook for social science due to funding cuts and an 'anti-research' mood in government. However, they also highlight the importance of social sciences in tackling complex challenges and propose solutions to strengthen their involvement in policymaking.

Even oysters pay taxes

A new study proposes that slow-growing animals waste energy in two ways, making too much protein and then discarding excess. Fast-growing oysters, on the other hand, are more efficient at protein production, according to USC marine biologists.

SourceUniversity of Southern California·JournalJournal of Experimental Biology·DateMar 18, 2010

Cat-calls are detrimental to everyone

Women who witness sexism may experience negative emotions and feel motivated to take action against men in general. Research by Chaudoir and Quinn found that catcalls can shape women's feelings and attitudes towards men, with bystander sexism impacting how female observers view all men more negatively.

SourceSpringer·JournalSex Roles·DateMar 18, 2010

Manufacturing antibodies

The RECAN project developed novel fluorochrome dyes bound to monoclonal antibodies, enabling improved diagnosis of leukaemia and rheumatic diseases. The project also produced recombinant proteins for immunisation and created a range of specific monoclonal and polyclonal antibodies with great commercial potential.

SourceEUREKA·DateMar 18, 2010

Bacteria divide like clockwork

Researchers have discovered how cyanobacteria's rate of cell division is regulated by the same circadian clocks that control human sleep patterns. The study found that cells divide once per day at specific points in the 24-hour cycle, with implications for understanding cellular renewal and cancer.

Cultural divide in ability to recognize sensual sounds

A British study found that Westerners reliably recognized six basic human emotions through non-verbal vocalizations, but culturally isolated Himba people only recognized a subset of these emotions. The study highlights the importance of considering positive emotions in cross-cultural research.

SourceFaculty of 1000·JournalProceedings of the National Academy of Sciences·DateMar 18, 2010

A report card on DFID: The Lancet calls for a post-election independent review to protect its successes and fix its problems

The Lancet Editorial praises DFID's global health successes, including education and undernutrition strategies, but criticizes intragovernmental tensions and fragmentation of responsibilities. The publication calls for a post-election independent review to address these issues and ensure the department's continued success.

SourceThe Lancet_DELETED·JournalThe Lancet·DateMar 18, 2010

Patient referrals cause differences in hospital infection rates

A study published in PLOS Computational Biology found that patient referrals between hospitals influence the rates of hospital-acquired infections, with University Medical Centers showing higher rates. The authors suggest focusing interventions on central hospitals in the network of patient referrals.

SourcePLOS·JournalPLOS Computational Biology·DateMar 18, 2010

Nano-based RFID tags could replace bar codes

Rice researchers have developed an inexpensive, printable transmitter for RFID tags that can be invisibly embedded in packaging. This technology has the potential to revolutionize checkout processes by allowing customers to walk through a scanner with their groceries without stopping at each item.

SourceRice University·JournalIEEE Transactions on Electron Devices·DateMar 18, 2010

Women do make men throw caution to the wind, research confirms

A study in Social Psychological and Personality Science found that young men took greater physical risks and had higher testosterone levels when attempting tricks in front of an attractive female. This suggests that the presence of a beautiful woman can lead to increased risk-taking behavior and elevated testosterone levels in men.

SourceSAGE·JournalSocial Psychological and Personality Science·DateMar 18, 2010

Medicare patients 5.5 times more likely to get cataract surgery than VA patients, study finds

A large eight-year study found that Medicare patients are 5.5 times more likely to undergo routine cataract surgery than those receiving care from the Department of Veterans Affairs. The disparity may be attributed to financial incentives, physician-driven decisions, or a lack of ophthalmologists within the VA system.

SourceIndiana University School of Medicine·JournalAmerican Journal of Medical Quality·DateMar 18, 2010

France's national program to reduce HAIs reports important successes; uses mandatory reporting

A French national program to reduce healthcare-associated infections (HAIs) reported important successes with mandatory public reporting. The program led to a drop of 40% in MRSA cases and improved infection control measures across the country. Key initiatives included advancing research, improving communication with patients, and stan...