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Science News for August 30, 2011


IU analysis changing diagnosis and management of initial UTIs in young children

Analysis by Indiana University School of Medicine researchers resulted in changes to American Academy of Pediatrics guidelines for diagnosing and treating initial urinary tract infections in infants and toddlers. The new guidelines argue against exposing young children to painful radiologic tests and prescribing prophylactic antibiotic...

Mobile phone data help track populations during disasters

A study using mobile phone positioning data tracks population movements after disasters, providing more accurate estimates than ad hoc methods. The method can be used for close to real-time monitoring of population movements during outbreaks, leading to better allocation of relief supplies.

SourcePLOS·JournalPLOS Medicine·DateAug 30, 2011

The diamond planet

Astronomers found a small, half-Jupiter-sized planet with a diameter of 60,000 kilometres orbiting an extremely dense pulsar, suggesting a unique formation process. The discovery reveals the possibility of a diamond-like structure in the planet's core due to its incredibly high density.

SourceMax-Planck-Gesellschaft·JournalScience·DateAug 30, 2011

Hands-on dads give kids an edge

A Concordia University study found that fathers who actively engage with their children can positively influence their development, leading to fewer behavior problems and higher intellectual abilities. The study also highlighted the importance of mothers and other caregivers in child-rearing.

SourceConcordia University·JournalCanadian Journal of Behavioural Science/Revue canadienne des sciences du comportement·DateAug 30, 2011

Suicide methods differ between men and women

Research finds that women are less likely than men to use suicide methods that disfigure the face or head. Men are nearly twice as likely as women to have used such methods, suggesting a potential gap in understanding and prevention strategies for gender-specific risk factors.

SourceSpringer·JournalSex Roles·DateAug 30, 2011

Novel alloy could produce hydrogen fuel from sunlight

A novel alloy has been developed that can produce hydrogen fuel from sunlight using photoelectrochemical water splitting. The GaN-Sb alloy, made of inexpensive materials, functions as a catalyst in the process and can be reused indefinitely. This discovery could potentially have profound implications for the future of solar energy.

SourceUniversity of Kentucky·JournalPhysical Review B·DateAug 30, 2011

The future for Japanese health: human-security based reforms, more power for local government, improving quality, emphasis on global health, and effectively dealing with the Fukushima aftermath

The Lancet Series proposes human-security based reforms to maintain Japan's universal health coverage. Local governments must take more responsibility for healthcare resources and funding, while consolidated institutions will improve physician quality and provide opportunities for domestic and global health experts to interact.

SourceThe Lancet_DELETED·JournalThe Lancet·DateAug 30, 2011

The CRISP AMI trial

The CRISP AMI trial found that intra-aortic balloon counterpulsation does not reduce infarct size in patients with ST segment elevation myocardial infarction (STEMI) without cardiac shock. The study showed no significant difference in infarct size between the groups, but IABC was associated with lower mortality rates.

College freshmen face sleep problems but intervention can help

A study by Brown University researchers found that college freshmen often struggle with sleep quality due to factors like roommates, dorm noise, and academic stress. However, a campuswide media campaign was able to help nearly 10% of students improve their sleep habits, leading to better grades, mood, and overall health.

SourceBrown University·JournalJournal of American College Health·DateAug 30, 2011

The RUBY-1 trial

A phase II dose-finding study found that darexaban, a Factor Xa inhibitor, increased bleeding risks by two to four-fold in patients with acute coronary syndrome. The trial explored the safety and optimal dosing regimen of darexaban in secondary prevention of ischaemic vascular events.

6 months on from Fukushima: The world has helped Japan, now

Despite having one of the best health systems in the world, Japan's development assistance for health budget is only 2% of its foreign aid budget. The country must take center stage in global health to help other countries. Japan has the potential to make substantial contributions to global health by sharing its expertise and increasin...

SourceThe Lancet_DELETED·JournalThe Lancet·DateAug 30, 2011

Rural areas at higher risk of dengue fever than cities

A study found that rural areas have a higher risk of dengue fever due to higher mosquito populations, while urban areas contribute significantly despite fewer cases. Improving water supply and vector control can increase the efficiency of control efforts.

SourcePLOS·JournalPLOS Medicine·DateAug 30, 2011

New chemical reagent turns mouse brain transparent

Researchers at RIKEN have developed a new aqueous reagent, Scale, which renders biological tissue transparent, allowing for vivid 3D images of neurons and blood vessels deep inside the mouse brain. The reagent's unique properties enable visualization of fluorescently-labeled samples at unprecedented depths and levels of spatial detail.

SourceRIKEN·JournalNature Neuroscience·DateAug 30, 2011

Health systems research needs overhaul

The article emphasizes the need for a structured approach to health policy and systems research (HPSR), citing its current challenges. To address this, the authors propose establishing dedicated homes for HPSR in universities and independent research institutes.

SourcePLOS·JournalPLOS Medicine·DateAug 30, 2011

Happiness: All in who you know, goals

A study by Bernardo J. Carducci found that happy college students who are less outgoing focus on family and friends connections, positive thinking, and goal-oriented activities, leading to increased happiness. Additionally, goal-oriented students tend to be happier due to engaging in purposeful leisure and spiritual reflection.

Why does Japan have the highest life expectancy?

Rapid declines in infectious disease and stroke mortality enabled by salt reduction campaigns, improved healthcare technologies, and universal health insurance coverage have contributed to Japan's exceptional longevity. The country faces new challenges due to an aging population and rising healthcare costs.

SourceThe Lancet_DELETED·JournalThe Lancet·DateAug 30, 2011

Testing the water for bioenergy crops

A recent study highlights the importance of considering water usage in bioenergy crop production, particularly with large grasses like miscanthus or switchgrass. The research found that these crops can increase net water use due to higher transpiration rates and land conversion's impact on hydrology.

SourceU.S. National Science Foundation·JournalProceedings of the National Academy of Sciences·DateAug 30, 2011

New insight into impulse control

A study published in the Journal of Neuroscience found that differences in when movement neurons begin accumulating information from sensory neurons explain adjustments in response times. This discovery forces a major modification to existing cognitive models of impulse control, shedding new light on how the brain controls basic impulses.