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Science News Archive September 2009 - Page 18


Page 18 of 24

How accurate are hospital report cards?

A new study by Loyola University Health System researchers highlights the limitations of hospital report cards, particularly in neurosurgery. The mortality index used in these reports fails to account for factors such as patient mix, complex cases, and treatment of lower-risk elective versus high-risk non-elective cases.

SourceLoyola Medicine·JournalJournal of Neurosurgery·DateSep 8, 2009

Mother knows best

Researchers found female crickets store more sperm from unrelated males and choose the best father for their offspring. This study challenges common behaviors among insect species and sheds light on the complex mating strategies in the insect world.

SourceUniversity of Exeter·JournalMolecular Ecology·DateSep 8, 2009

Rice researchers seek better vaccine procedure

Rice University bioengineer Michael Deem has developed a technique to predict the efficacy of H1N1 vaccines by estimating antigenic distance between flu strains. This method assigns a numerical value to the similarity between epitope regions, allowing researchers to refine cell-based approaches and shorten vaccine production time.

'Hygiene hypothesis' challenged

New research suggests that daycare attendance in early childhood doubles respiratory problems, but does not prevent later asthma and allergies. Children who started daycare early were more likely to experience wheezing in the first year of life, but this effect reversed by age eight.

SourceAmerican Thoracic Society·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateSep 8, 2009

Flips, flops and cartwheels

Researchers discover gecko tails have intricate movement patterns after shedding, including flips up to 3cm in height. The isolated tail serves as a vehicle for studying spinal cord function and nerve-muscle coordination.

SourceUniversity of Calgary·JournalBiology Letters·DateSep 8, 2009

MU researcher uses bacteria to make radioactive metals inert

A Missouri University researcher is studying sulfate-reducing bacteria that can convert toxic uranium into nearly insoluble uraninite, reducing contamination and environmental costs. The bacteria's ability to cleanse water is being explored, with potential applications for heavy metal pollution from storage tanks and industrial waste.

SourceUniversity of Missouri-Columbia·JournalApplied and Environmental Microbiology·DateSep 8, 2009

Stimulus funds to further cyber security research

Penn State researchers have received a $1 million stimulus grant to improve cyber security for modern data centers. The project aims to consolidate four areas of systems security research, including microscopic intrusion analysis and detection, redundancy, automatic response, and diversity-driven protection.

Houseplants cut indoor ozone

Researchers found that three common houseplants significantly reduced indoor ozone concentrations in a simulated environment. The study suggests using plants as a cost-effective tool to mitigate indoor air pollution, especially in developing countries where expensive technology may not be feasible.

Casting out devils

Scientists have discovered how salmonella kills tumors by migrating into cancerous tissues and triggering a strong inflammatory response. The inflammatory response causes blood vessels in the tumor to become permeable, allowing salmonella to spread and ultimately kill the tumor.

SourceHelmholtz Association·JournalPLOS ONE·DateSep 8, 2009

New vaccine shows promise for COPD patients at risk for pneumonia

A new protein conjugate vaccine, PCV7, has been found to produce superior immune responses in patients with chronic obstructive pulmonary disease (COPD) compared to the currently accepted vaccine, PPSV23. The study suggests that PCV7 may offer improved protection against respiratory disease in COPD patients at risk for pneumonia.

SourceAmerican Thoracic Society·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateSep 8, 2009

Making geothermal more productive

Researchers at the University of Utah are conducting a $10.2 million study in Idaho to develop new techniques for increasing geothermal energy production. By using oil and gas industry methods to create pathways in hot rock, they aim to unlock the country's vast geothermal potential.

Taking the stress off yeast produces better wine

Researchers have identified genes in yeast that enable it to respond to stress and are investigating ways to improve its performance by modifying its stress response mechanism. By manipulating these genes, they found a family of enzymes called sirtuins plays an important role in controlling wine yeast lifespan.

Arctic oil: A boon for nest predators

A new study reveals that oil development in the Arctic is attracting opportunistic predators like Arctic foxes, ravens, and gulls, which feed on nesting birds. These predators are using oil infrastructure to build nests or dens, leading to a significant loss of nests in areas closer to oil development.

SourceWildlife Conservation Society·JournalEcological Applications·DateSep 8, 2009

Plants on steroids: Key missing link discovered

Scientists have identified a complete signaling pathway for plant brassinosteroid hormones, a discovery that could lead to genetic engineering of crops with higher yields and improve understanding of human diseases like cancer and diabetes. The study shares similarities with animal steroids, but functions differently at the cellular le...

SourceCarnegie Institution for Science·JournalNature Cell Biology·DateSep 8, 2009

JCI online early table of contents: Sept. 8, 2009

Scientists have engineered a human HIV-1 inhibitor modeled after an owl monkey fusion protein that potently blocks HIV-1 infection. This new treatment showed promise in preventing viral replication in mice and has the potential to be a robust anti-HIV-1 gene therapy candidate.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateSep 8, 2009

Ben-Gurion University of the Negev develops thin films showing promise for solar applications

Scientists at Ben-Gurion University have developed thin films that demonstrate carrier multiplication, a process that can enhance solar cell efficiency. The breakthrough, published in Nature Physics, shows that bulk PbS and PbSe films exhibit more efficient carrier multiplication than nanocrystalline films of the same materials.