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Science News Archive 2009 - Page 11


Page 11 of 277

Europe's flora is becoming impoverished

The study found that European plant communities are becoming more homogeneous, with rare species becoming extinct and phylogenetic diversity decreasing. This loss of uniqueness makes it harder for biological communities to adapt to environmental changes.

SourceHelmholtz Association·JournalProceedings of the National Academy of Sciences·DateDec 11, 2009

Elusive 'hot' electrons captured in ultra-thin solar cells

Boston College researchers successfully harvested elusive charges using ultra-thin solar cells, opening a potential avenue to improved solar power efficiency. The team developed a mechanism able to extract hot electrons in the moments before they cool, effectively opening an escape hatch for these highly energized particles.

SourceBoston College·JournalApplied Physics Letters·DateDec 11, 2009

Most eligible patients miss out on cardiac resynchronization therapy for heart failure

A large-scale study found that less than half of eligible patients with heart failure receive cardiac resynchronization therapy (CRT) devices. The therapy is particularly beneficial for patients with disorganized heartbeats, but widespread variations in CRT use were observed among practices and patient characteristics.

SourceUniversity of South Florida (USF Health)·JournalAmerican Heart Journal·DateDec 11, 2009

New research identifies modifiable risk factors for heart disease

Emerging research reveals that post-menopausal women experience adverse changes in lipid profiles around the time of their final menstrual period, independent of age. Conversely, quitting smoking before or after a heart attack significantly improves long-term survival rates, with reductions comparable to those from lifestyle changes an...

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateDec 11, 2009

Blood stem cell transplant regimen reverses sickle cell disease in adults

A modified blood adult stem-cell transplant regimen has effectively reversed sickle cell disease in 9 of 10 adults with severe symptoms. The trial's results show that the treatment reduced toxicity and allowed patients to achieve stable mixed donor chimerism, completely replacing their disease-causing cells.

New inherited eye disease discovered

Researchers at the University of Iowa have found a new inherited retinal disease affecting the macula, which is an area critical for central vision. The disease causes abnormal blood vessels to form, leading to swelling or scars that can blur parts of the visual field.

SourceUniversity of Iowa·JournalArchives of Ophthalmology·DateDec 11, 2009

Scientists identify natural anti-cancer defenses

Researchers at the University of Montreal identified a novel molecular mechanism that prevents cancer by regulating the p53 gene. The SOCS1 molecule plays a crucial role in suppressing cancer-causing cytokine activity, offering potential new treatments for chronic inflammatory diseases and cancer prevention strategies.

SourceUniversity of Montreal·JournalMolecular Cell·DateDec 11, 2009

Why England's soccer team keeps losing on penalties

A new study by the University of Exeter shows that anxious penalty takers are more likely to focus on the goalkeeper, leading to shots that centralize and become easier to save. The research suggests that coaches can address this issue through training, emphasizing the importance of practicing aiming strategies under pressure.

SourceUniversity of Exeter·JournalJournal of Sport and Exercise Psychology·DateDec 11, 2009

New discoveries could improve climate projections

Researchers have discovered that the deep ocean's temperature variability and circulation system are more complex than previously thought, leading to more accurate predictions of sea level rise and ice volume changes. The study uses a 3-D reconstruction of an ocean during a past warm period to gain insights into global climate dynamics.

SourceU.S. Geological Survey·JournalClimate of the Past·DateDec 11, 2009

Math goes viral

Researchers at the University of Alberta designed materials that link mathematical concepts to real-world scenarios, such as disease transmission, to enhance learning. Students used these materials to calculate the West Nile virus's reproductive number, gaining a deeper understanding of math in science.

SourceUniversity of Alberta·JournalResearch in Science Education·DateDec 11, 2009

New curriculum mixes nanotechnology and skiing

The University of Nevada, Reno has developed a new curriculum that combines nanotechnology with skiing, aiming to prepare mechanical engineers for emerging challenges. Students will design and manufacture innovative materials and technologies to create extraordinary ski designs, including energy-efficient systems and dynamic structures.

Primitive dinosaur species found in New Mexico

Researchers have discovered a new primitive dinosaur species, Tawa hallae, in northern New Mexico with nearly complete skeletons providing insights into the evolutionary path of dinosaurs towards birds. The species, likely a meat-eater, had air sacs in its braincase and neck areas.

SourceField Museum·JournalScience·DateDec 10, 2009

Old math reveals new thinking in children's cognitive development

Researchers used Category Theory to explain why specific reasoning skills, such as Transitive Inference and Class Inclusion, develop in children around age five. These skills involve applying two lines of thinking simultaneously, allowing children to understand complex relationships between objects.

SourcePLOS·JournalPLOS Computational Biology·DateDec 10, 2009

Formula to detect an author's literary 'fingerprint'

Physicists in Sweden create a formula to identify distinct author styles by analyzing word frequencies in literature, challenging George Kingsley Zipf's maxim. The 'meta book' concept represents an imaginary infinite book containing each author's unique word frequency characteristics.

SourceIOP Publishing·JournalNew Journal of Physics·DateDec 10, 2009

NRC rewards Penn State nuclear engineering efforts

The Nuclear Regulatory Commission has awarded Penn State's nuclear engineering program nearly $1 million to boost nuclear education and expand the workforce. The funding will support a radiochemistry education program with a new laboratory course providing hands-on experience for students.

Understanding apples' ancestors

Researchers analyze genetic diversity of 280 individuals from Armenia and Georgia, comparing with results from Russia and Turkey. They establish a core collection of 27 trees capturing 93% of alleles, making M. orientalis more accessible for breeding and research communities.

SourceAmerican Society for Horticultural Science·JournalJournal of the American Society for Horticultural Science·DateDec 10, 2009