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Science News Archive March 2011 - Page 5


Page 5 of 28

Even Canadian rocks are different

A new study published in Geology reveals that rock formations along the Canadian-US border date back to 120 million years ago. The research suggests that ancient rivers flowing through western North America were separated by the modern-day border.

SourceUniversity of Calgary·JournalGeology·DateMar 28, 2011

New insight into how 'tidying up' enzymes work

Researchers have gained insight into how 'tidying up' enzymes, like cytochromes P450, break down drug molecules. The study reveals that the oxygen transfer process can be influenced by three factors: molecular docking, oxygen-accepting ability, and enzyme pocket shape.

SourceUniversity of Bristol·JournalProceedings of the National Academy of Sciences·DateMar 28, 2011

Wind can keep mountains from growing

A University of Arizona-led research team found that wind can be up to 100 times more effective at eroding mountains than previously thought. The study suggests that wind played a key role in shaping the Loess Plateau, with over half of its dust coming from the Qaidam Basin.

SourceUniversity of Arizona·JournalGSA Today·DateMar 28, 2011

Video skilled the students so far

Research by Geoff Hilton found that video production improved student understanding of scientific concepts, particularly when rehearsing for an audience. The study revealed that students who created videos showed better learning outcomes compared to those who produced written posters.

SourceInderscience Publishers·JournalInternational Journal of Innovation and Learning·DateMar 28, 2011

Other mental health medications no safer than atypical antipsychotics in nursing home residents

A Canadian study of over 10,900 nursing home patients found that conventional antipsychotics, antidepressants, and benzodiazepines carried higher risks of death, femur fractures, and heart failure compared to atypical antipsychotics. The findings suggest a need for caution when prescribing these medications in this population.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateMar 28, 2011

Indications of Alzheimer's disease may be evident decades before first signs of cognitive impairment

Researchers at Mount Sinai School of Medicine found that patients with Alzheimer's disease have lower glucose utilization in the brain, detectable approximately 20 years prior to symptoms. The study suggests that novel therapies could prevent the onset of Alzheimer's by addressing mitochondrial impairment.

SourceThe Mount Sinai Hospital / Mount Sinai School of Medicine·JournalTranslational Neuroscience·DateMar 28, 2011

Mothers' hard work pays off with big brains for their babies

A new study published in Proceedings of the National Academy of Sciences reveals that brain growth in babies is linked to maternal investment, including duration of pregnancy and breastfeeding period. The research suggests that longer pregnancies and breastfeeding periods result in bigger brains for babies.

SourceDurham University·JournalProceedings of the National Academy of Sciences·DateMar 28, 2011

International 50-year mortality trends in children and young people reveal an inadequate response to the health problems and causes of death in adolescents, particularly young men

The Lancet study finds that death rates in young people are now higher than in children across most high- and low-income countries, with injury being a major cause of death in young men. The authors highlight the lack of interventions and resources to tackle contemporary health problems faced by young people.

SourceThe Lancet_DELETED·JournalThe Lancet·DateMar 28, 2011

To meet, greet or retreat during influenza outbreaks?

A new model suggests that severing social interactions may not be the best approach to prevent disease spread during influenza outbreaks. The researchers found that a moderate increase in the price of interpersonal contact can lower the peak prevalence of the disease while increasing overall societal utility.

SourceNational Institute for Mathematical and Biological Synthesis (NIMBioS)·JournalProceedings of the National Academy of Sciences·DateMar 28, 2011

Unlocking the secrets of Heritage Smells

A three-year project led by the University of Strathclyde aims to create portable devices that can analyze air samples from valuable items without touching them. The technology uses 'sniffing' artefacts to understand the composition and condition of objects, with potential applications for museums and collectors.

Certain breast cancer patients worry excessively about recurrence

A new study found that certain women with early-stage breast cancer experience excessive worrying about cancer recurrence, affecting medical care and quality of life. The research identified factors associated with high levels of worry, including younger age, employment, pain, fatigue, and radiation treatment.

SourceWiley·JournalCancer·DateMar 28, 2011

Childhood psychological problems have long-term economic and social impact, study finds

A new study found that childhood psychological problems can have significant negative impacts on an individual's life, including reduced earnings and decreased chances of establishing long-lasting relationships. The study, which followed a group of British residents for 50 years, found that family income was approximately one-fourth lo...

SourceRAND Corporation·JournalProceedings of the National Academy of Sciences·DateMar 28, 2011

Predicting serious drug side effects before they occur

A team of researchers has developed a new model that uses artificial neural networks to predict adverse drug reactions (ADRs) among 10,000 observations with 99.87% accuracy. The technology has the potential to save lives by identifying potential ADRs at an early stage of drug development and marketing.

SourceInderscience Publishers·JournalInternational Journal of Medical Engineering and Informatics·DateMar 28, 2011

Study illuminates the 'pain' of social rejection

A new study by the University of Michigan demonstrates that brain regions activated during physical pain are also active in individuals experiencing intense social rejection. The research found a neural overlap between the two experiences, which may help explain why people describe feelings of social rejection as 'painful'.

SourceUniversity of Michigan·JournalProceedings of the National Academy of Sciences·DateMar 28, 2011