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Science News Archive June 2013 - Page 3


Page 3 of 30

Keeping networks under control

Researchers at Northwestern University developed a computational framework to control large complex networks by identifying small perturbations that can rescue or reprogram them. The approach has been successfully applied to mitigate cascading failures in power-grid networks and identify potential drug targets in human cancer.

SourceNorthwestern University·JournalNature Communications·DateJun 27, 2013

Making hydrogenation greener

Researchers from McGill University have developed a method to use iron nanoparticles as catalysts in water-ethanol mixtures, overcoming the limitation of rusting in the presence of oxygen or water. This innovation enables the possibility of replacing platinum-series metals for hydrogenation under industrial conditions.

SourceMcGill University·JournalGreen Chemistry·DateJun 27, 2013

Biochemists identify protease substrates important for bacterial growth and development

Scientists used a combination of biochemistry and mass spectrometry to reveal how protein degradation is critical to cell cycle progression and bacterial development. They identified over 100 new candidate substrates of the protease ClpXP, including proteins involved in DNA replication, transcription, and cytoskeletal changes.

SourceUniversity of Massachusetts Amherst·JournalMolecular Microbiology·DateJun 27, 2013

Getting the carbon out of emissions

Researchers at MIT have developed an electrochemical system for capturing carbon dioxide from power plant emissions that can operate without a steam connection. This 'plug-and-play' solution could potentially capture 90% of CO2 from plant emissions while consuming only 25% of the plant's power output.

SourceMassachusetts Institute of Technology·JournalEnergy & Environmental Science·DateJun 26, 2013

Social network size predicts social cognitive skills in primates

Research by Evan MacLean and colleagues found that lemur group sizes positively correlate with performance on tests of social cognition. In contrast, nonsocial cognitive skills were not affected by group size. The study suggests that the evolution of complex social intelligence may be linked to larger social networks.

SourcePLOS·JournalPLOS ONE·DateJun 26, 2013

The evolution of throwing

Researchers found a suite of changes in human shoulders and arms allowed efficient hunting by throwing projectiles, paving the way for later adaptations like increased brain size and migration out of Africa. The study suggests that humans' ability to throw played a key role in becoming part-time carnivores.

SourceHarvard University·JournalNature·DateJun 26, 2013

Race apparently a factor in sleep apnea, Wayne State University researcher finds

A study by Wayne State University researcher James A. Rowley found that African-American men are more likely to experience severe sleep apnea, especially in younger age groups. The study controlled for body mass index and other factors, revealing a racial disparity in sleep apnea severity.

SourceWayne State University - Office of the Vice President for Research·JournalJournal of Clinical Sleep Medicine·DateJun 26, 2013

Nurse practitioners can boost quality of care for older patients with chronic conditions

A recent UCLA-led study highlights the crucial role nurse practitioners play in treating chronic geriatric conditions. Nurse practitioners were found to improve the satisfaction of quality indicators for patients with falls, urinary incontinence, dementia, and depression when co-managed with primary care physicians.

SourceUniversity of California - Los Angeles Health Sciences·JournalJournal of the American Geriatrics Society·DateJun 26, 2013

Sailors most often injure their knees -- on land

A recent study by the University of Gothenburg reveals that sailors are most commonly injured on land, primarily due to overstrain, especially during physical training. The study also found a higher incidence of injuries among younger sailors, with those on the national team experiencing more knee injuries.

SourceUniversity of Gothenburg·JournalBritish Journal of Sports Medicine·DateJun 26, 2013

Quantum engines must break down

Researchers from University College London and the University of Gdansk found new laws governing microscopic systems, leading to fundamental limitations on extracting energy. Microscopic heat engines cannot be as efficient as their larger counterparts, with irreversibility playing a key role.

SourceUniversity College London·JournalNature Communications·DateJun 26, 2013

People prefer 'carrots' to 'sticks' when it comes to healthcare incentives

A study found that policies with higher premiums for overweight individuals are perceived as stigmatizing, while 'carrot' plans with premium reductions for healthy-weight people are seen as more effective. Participants also evaluated plans on moral grounds, deciding that punishing someone for being overweight was wrong regardless of po...

SourceAssociation for Psychological Science·JournalPsychological Science·DateJun 26, 2013

Influenza infection increases likelihood of bacterial pneumonia 100-fold, U-Michigan-led study finds

A University of Michigan-led study found that influenza infection significantly increases the likelihood of developing pneumococcal pneumonia, with a risk increase of up to 100-fold. The study suggests that vaccination against both flu and pneumococcal disease is crucial in reducing bacterial pneumonia incidence.

SourceUniversity of Michigan·JournalScience Translational Medicine·DateJun 26, 2013

Hold the medicinal lettuce

A study by Johns Hopkins Medicine reveals that reported plant genetic material entering human blood may be a false positive, contradicting previous research from Nanjing University. The team used advanced techniques to detect microRNAs in macaques' blood and found highly variable results.

SourceJohns Hopkins Medicine·JournalRNA Biology·DateJun 26, 2013

Illegal marijuana grows threaten fishers in the southern Sierra Nevada

A recent study by the USDA Forest Service's Pacific Southwest Research Station reveals that female fishers living near areas with high concentrations of illegal marijuana sites have higher exposure to rodenticides and lower survival rates. The study's findings underscore the urgent need for regulating pesticide use in these areas.

Whole genome or exome sequencing: An individual insight

Research reveals that focusing on coding regions through high-depth coverage whole genome sequencing can accurately identify genetic variations behind CMT, outperforming exome sequencing. Exome sequencing offers greater sensitivity and fewer false positives due to its higher coverage, providing a superior approach for precision medicine.

SourceBMC (BioMed Central)·JournalGenome Medicine·DateJun 26, 2013

UCSB research points to a potential therapeutic approach to Alzheimer's disease

Researchers at UCSB have discovered a new potential target in the fight against Alzheimer's and other neurodegenerative diseases by exploring the possibility of inhibiting hyperphosphorylated tau. The study found that small molecular kinase inhibitors can efficiently reduce tau phosphorylation and exert a neuroprotective effect, restor...

SourceUniversity of California - Santa Barbara·JournalJournal of Biological Chemistry·DateJun 26, 2013

Social animals have more social smarts

A study at Duke University found that lemurs in larger social groups exhibit more 'social intelligence' and are more likely to steal food behind a human's back. The research supports the 'social intelligence hypothesis,' suggesting that living in large social networks drove the evolution of complex social cognition in primates.

SourceDuke University·JournalPLOS ONE·DateJun 26, 2013