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Science News for November 27, 2012


Combining better physical fitness and statins significantly improves survival in people with unhealthy blood fat or cholesterol levels

A recent study published in The Lancet found that combining better physical fitness and statins significantly improves survival in people with unhealthy blood fat or cholesterol levels. Moderate intensity physical activity can be achieved through walking, gardening, and gym classes, making it a feasible option for many middle-aged adul...

SourceThe Lancet_DELETED·JournalThe Lancet·DateNov 27, 2012

Tracking pollution from outer space

A Tel Aviv University team uses NASA satellites to measure pollution hovering over world's megacities, tracking pollution trends for 189 megacities. The method provides standardized global testing of pollution levels, holding countries accountable for their emissions and encouraging environmentally friendly practices.

SourceAmerican Friends of Tel Aviv University·JournalAmerican Journal of Climate Change·DateNov 27, 2012

The Journal of Nursing Research receives impact factor ranking

The Journal of Nursing Research has achieved an initial Impact Factor of 0.688 and a ranking of 73 out of 97 journals in the Nursing Science Category, and 70 out of 95 journals in the Social Science Category. This recognition indicates that the journal produces high-quality research contributing to the science of healthcare and nursing.

SourceWolters Kluwer Health·JournalJournal of Nursing Research·DateNov 27, 2012

Safer spinach? Scientist's technique dramatically reduces E. coli numbers

Researchers at the University of Illinois have created a method that drastically reduces E. coli numbers on spinach leaves by over 99.9%. The technique combines continuous ultrasound treatment with chlorine washing, achieving a four-log reduction in pathogenic bacteria.

SourceUniversity of Illinois College of Agricultural, Consumer and Environmental Sciences·JournalInnovative Food Science & Emerging Technologies·DateNov 27, 2012

James' bond: A graphene/nanotube hybrid

Researchers successfully grew forests of carbon nanotubes on a sheet of graphene, creating a seamless three-dimensional structure with a massive surface area. This hybrid material offers great potential for electronic components like fast supercapacitors.

SourceRice University·JournalNature Communications·DateNov 27, 2012

Being bullied can cause trauma symptoms

A Norwegian study of 963 children aged 14 and 15 found that post-traumatic stress disorder (PTSD) symptoms were seen in roughly 33% of respondents who said they had been victims of bullying. The research also showed that girls are more likely to display PTSD symptoms than boys.

SourceUniversity of Stavanger·JournalJournal of Abnormal Child Psychology·DateNov 27, 2012

New mechanism for cancer progression discovered by UNC and Harvard researchers

Researchers at UNC and Harvard have discovered a new alternative mechanism for activating the Ras protein, which plays a crucial role in cellular growth control. The discovery, published in Nature Structural and Molecular Biology, shows that modification of Ras with ubiquitin can activate it, leading to cancer formation.

SourceUniversity of North Carolina Health Care·JournalNature Structural & Molecular Biology·DateNov 27, 2012

Enzyme explains angina in diabetics

A new study published in Circulation reveals that the arginase enzyme may play a key role in the development of cardiovascular disease in patients with type II diabetes. Inhibiting this enzyme improves blood vessel function in diabetics with angina, but has no effect on healthy individuals or those without angina.

SourceKarolinska Institutet·JournalCirculation·DateNov 27, 2012

New method for diagnosing malaria

Researchers at Aarhus University have developed a new, simple and sensitive method to diagnose malaria infections using an enzyme-based technology called REEAD. This method can detect relatively low infection counts and also identifies resistant Plasmodium parasites, making it suitable for large-scale screening projects.

SourceAarhus University·JournalACS Nano·DateNov 27, 2012

How infidelity helps nieces and nephews

A University of Utah study supports the theory that men help their sisters' children because they are more likely to carry genes from their mother. The new mathematical model relaxes assumptions previously made, showing that men are more likely to share genes with their sister's kids than under the old theory.

4 is the 'magic' number

A new study suggests that the human mind can cope with a maximum of four chunks of information before confusion sets in. Professor Gordon Parker from the University of New South Wales re-analyzed experiments and found that this number is more accurate than previously thought.

SourceUniversity of New South Wales·JournalActa Psychiatrica Scandinavica·DateNov 27, 2012

Flu outbreaks predicted with weather forecast techniques

Researchers have adapted weather forecasting techniques to predict local flu outbreaks, providing weeks of warning before the peak. The system uses data assimilation and Google Flu Trends to estimate flu-related sickness in regions, allowing health officials to better prepare and make informed decisions.

SourceNational Center for Atmospheric Research/University Corporation for Atmospheric Research·JournalProceedings of the National Academy of Sciences·DateNov 27, 2012

GSA Bulletin: From Titan to Tibet

Researchers develop a sediment budget for an alpine cirque in British Columbia, Canada, revealing glacial retreat rates of 0.5-0.9 mm per year. In Tibet, new data supports a model of rift evolution involving upper crustal thinning and isostatic rebound.

SourceGeological Society of America·JournalGeological Society of America Bulletin·DateNov 27, 2012

New test to help heavy drinkers reduce alcohol intake

Researchers at the University of Liverpool developed a computer-based test to help heavy drinkers reduce their alcohol consumption by practicing restraint in response to images of alcoholic drinks. The study found that participants who learned to exercise self-control subsequently drank less beer than control groups.

SourceUniversity of Liverpool·JournalExperimental and Clinical Psychopharmacology·DateNov 27, 2012

Study suggests different organ-derived stem cell injections improve heart function

Researchers found that both skeletal muscle MSCs and adipose tissue MSCs improved left ventricle function and reduced infarct size after injection into the heart of laboratory rats. The study suggests that these cells may be a potential treatment modality for patients with acute myocardial infarction.

Cell Transplantation reports islet cell advancement increases impact on transplantation

A new process of creating islet cell clusters has been successfully developed to improve pancreatic transplantation. The clusters were engineered to overcome challenges such as hypoxic conditions and immune reactions, resulting in higher viability rates and potential cure for type I diabetes.

Fish ear bones point to climate impacts

Scientists are studying fish ear bones to understand the impacts of climate change on fish growth and distribution. The otoliths, which record annual growth rings, can provide insights into environmental conditions and help guide conservation efforts.

SourceCSIRO Australia·JournalNature Climate Change·DateNov 27, 2012

Amyloid imaging helps in evaluating possible Alzheimer disease

A study published in Alzheimer Disease & Associated Disorders found that a florbetapir PET scan can alter physicians' diagnostic thinking, guiding treatment and further testing for patients with cognitive impairment. The test showed amyloid deposits in 113 out of 229 patients, leading to changes in diagnosis and treatment plans.

SourceWolters Kluwer Health·JournalAlzheimer Disease & Associated Disorders·DateNov 27, 2012

How vegetables make the meal

A Cornell University study found that serving vegetables with dinner increases the positive response of the meal and its preparer. Parents surveyed by researchers rated vegetable-prepared meals as more complete, loving, and tasty, and perceived the cook as more thoughtful and attentive.

SourceCornell Food & Brand Lab·JournalPublic Health Nutrition·DateNov 27, 2012

The hungry caterpillar: Beware your enemy's enemy's enemy

A new study reveals that hyperparasitoids exploit plant odours triggered by parasitoid-infected caterpillars, compromising the mutualistic relationship between plants and parasitoids. This complex network of interactions highlights the importance of considering species at multiple trophic levels in ecological functions.

SourcePLOS·JournalPLOS Biology·DateNov 27, 2012

Increasing drought stress challenges vulnerable hydraulic system of plants, GW professor finds

A recent study by George Washington University Professor Amy Zanne found that plants worldwide are operating at their safety threshold for drought, making forests vulnerable to environmental stress. The research reveals that while plants vary in drought resistance, they share similar hydraulic safety thresholds across all forest types.

SourceGeorge Washington University·JournalNature·DateNov 27, 2012

Gene linked to respiratory distress in babies

A study identified a single gene, ABCA3, associated with significant cases of respiratory distress syndrome (RDS) in full-term babies. The researchers found that mutations in this gene account for about 10% of RDS cases and can be treated with neonatal intensive care.

SourceWashU Medicine·JournalPEDIATRICS·DateNov 27, 2012