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Science News Archive February 2011 - Page 5


Page 5 of 25

Bacteria living on old-growth trees

Researchers discover that bacteria associated with mosses on tree branches are essential for nutrient dynamics, enabling the long-term productivity of coastal temperate rainforests. The study highlights the importance of preserving large old-growth trees to maintain these forests' health.

SourceMcGill University·JournalPlant and Soil·DateFeb 23, 2011

Gaze following abilities in wolves

Researchers found that hand-raised wolves can follow a gaze around an obstacle, indicating a more cognitively advanced task than previously observed. The wolves' ability to detour an obstacle suggests that gaze following is not exclusive to primates and corvids.

SourcePLOS·JournalPLOS ONE·DateFeb 23, 2011

Steroids to treat asthma: How safe are they?

A new study from the University of Montreal found that a short burst of oral steroids may temporarily depress the immune system in children with asthma, leading to reduced antibody production. However, this effect is considered transient and rare, occurring only when exposed to new antigens during an asthma attack.

Stop and go

Researchers describe the mechanism of blockade and reactivation in molecular detail, revealing TFIIS's role in facilitating mRNA excision. This process is essential for cell survival and regulates gene activity in stem and tumor cells.

Producing clean water in an emergency

McGill researchers develop a cheap, portable paper-based filter to produce clean drinking water in emergency situations. The filter, coated with silver nanoparticles, is able to kill nearly all bacteria and produce water that meets EPA standards.

SourceMcGill University·JournalJournal of Environmental Science and Technology·DateFeb 23, 2011

All about addiction

A recent special issue of Neuron examines the complexities of addiction research, highlighting genetic vulnerability, neuronal transmission, and behavioral treatments. The study reveals profound changes in behavior and suggests that therapeutic strategies should focus on reversing cognitive deficits.

SourceCell Press·JournalNeuron·DateFeb 23, 2011

Are we more -- or less -- moral than we think?

A study by Rimma Teper and colleagues found that people's predicted moral actions don't always align with their actual behavior. The researchers discovered that emotions play a crucial role in driving moral decisions, particularly when individuals are contemplating their actions rather than facing the consequences of those actions.

SourceUniversity of Toronto·JournalPsychological Science·DateFeb 23, 2011

Wellcome Image Awards 2011

The Wellcome Image Awards 2011 highlight the diversity of images available through the Wellcome Library's image repository. The winners use various techniques to capture the wonder of medicine and the life sciences.

Metallic molecules to nanotubes: Spread out!

A Rice University lab has created a technique to disperse single-walled carbon nanotubes in water using ruthenium complexes, keeping their unique properties intact. The new approach allows for the simultaneous addition of functionalities, advancing applications in imaging sensors, catalysis, and solar-activated hydrogen fuel cells.

SourceRice University·JournalChemical Communications·DateFeb 23, 2011

New 'thunder-thighs' dinosaur discovered

Scientists have discovered a new sauropod dinosaur, Brontomerus mcintoshi, with enormous thigh muscles and unique hip structure, suggesting it may have used its kick as defense against predators. The discovery challenges the previous idea that sauropods began to disappear in the Early Cretaceous period.

SourceUniversity College London·JournalActa Palaeontologica Polonica·DateFeb 23, 2011

Scientists create illusion of having 3 arms

A team of scientists at Karolinska Institutet has successfully created an illusion of having three arms by using a realistic prosthetic arm. Healthy volunteers were tested and found to experience a third arm as part of their body image, even when it was threatened with harm.

SourcePLOS·JournalPLOS ONE·DateFeb 23, 2011

Use of nitrates may increase bone strength

A study found that nitroglycerin ointment increased bone mineral density and decreased bone resorption in postmenopausal women. The researchers also observed increases in bone-specific alkaline phosphatase and decreases in urine N-telopeptide, markers of bone formation and resorption.

SourceJAMA Network·JournalJAMA·DateFeb 22, 2011

MIT engineers design new nanoparticle that could lead to vaccines for HIV, malaria, other diseases

Scientists have designed a new type of nanoparticle that can deliver synthetic versions of proteins normally produced by viruses, eliciting a strong immune response comparable to live virus vaccines. The nanoparticles consist of concentric fatty spheres that can be used to develop vaccines against cancer and infectious diseases.

SourceMassachusetts Institute of Technology·JournalNature Materials·DateFeb 22, 2011

Struggling to follow doctor's orders

A Northwestern University study found that over one-third of paid caregivers struggled with reading and understanding health-related information, while 60% made errors when sorting medications. The study aims to develop standardized tests to evaluate caregiver skills and improve senior care.

Blood test may find markers of bladder cancer risk

A blood test can accurately detect biomolecular markers of bladder cancer risk linked to environmental exposures like cigarette smoke and industrial pollutants. The test measures methylation patterns in immune system cells, which are associated with an increased likelihood of disease.

SourceBrown University·JournalJournal of Clinical Oncology·DateFeb 22, 2011

Study: For a better workday, smile like you mean it

A study by Michigan State University found that employees who fake smile for customer interactions worsen their mood and withdraw from work. In contrast, those who cultivate positive thoughts improve their mood and withdraw less. The study also showed gender differences, with women being more affected by fake smiling.

SourceMichigan State University·JournalAcademy of Management Journal·DateFeb 22, 2011

Study to examine Ohio education innovations

Researchers study Ohio STEM Learning Network's implementation, spread, and sustainability to understand how networks produce gains and apply innovative approaches to education. The study aims to identify effective components of networking needed to establish STEM schools and explore how these innovations are translated locally.