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Science News Archive March 2011 - Page 20


Page 20 of 28

Giving children the power to be scientists

A new computer toolkit named nQuire has been developed to teach children how to think like scientists, enabling them to gather data, analyze results, and make informed decisions. The project shows that this approach can improve learning outcomes, maintain student enjoyment of science lessons, and develop critical thinking skills.

Which side of the brain rotates a mental picture?

A multidisciplinary team found that patients with tumors in the right parietal cortex struggled to process categorical spatial information, leading to errors in mental rotation tasks. The left prefrontal cortex was also affected, causing difficulties in setting up specific programs within the brain for task organization.

SourceElsevier·JournalCortex·DateMar 9, 2011

Americans have higher rates of most chronic diseases than same-age counterparts in England

Researchers found that Americans experience higher rates of chronic disease and markers of disease than their English counterparts at all ages, despite the US having a higher healthcare spending. The study suggests that allocation of health care resources, lifestyle, and social conditions may play a role in the observed differences.

SourceOxford University Press UK·JournalAmerican Journal of Epidemiology·DateMar 9, 2011

Tiny gems take big step toward battling cancer

A Northwestern University research team found that binding chemotherapy drugs to nanodiamonds significantly improves the effectiveness of cancer treatment, particularly in cases where tumors are resistant to conventional therapies. The discovery holds promise for treating aggressive cancers with fewer toxic side effects.

SourceNorthwestern University·JournalScience Translational Medicine·DateMar 9, 2011

In adolescence, the power to resist blooms in the brain

Research using fMRI scans found that brain activity in areas responsible for emotional regulation increased significantly between ages 10 and 13, allowing children to better resist peer influence. This study provides insight into the brain's wiring during adolescence and may lay the foundation for future studies with clinical relevance.

SourceUniversity of Oregon·JournalNeuron·DateMar 9, 2011

IRBs could use pre-clinical data better

Researchers argue that IRBs often neglect reporting and methodological quality in preclinical experiments, leading to inadequate risk-benefit assessments. A proposed solution suggests considering evidence on risks and benefits of agents targeting related biological pathways.

SourcePLOS·JournalPLOS Medicine·DateMar 8, 2011

A more definitive test for a common sexually transmitted infection

A study from Rhode Island Hospital found a new test for Trichomonas vaginalis (TV) to be more accurate, detecting 100% true positives with no false positives. The test was found to be prevalent in women aged 36-45 and 51-60, indicating the need for routine screening for this common sexually transmitted infection.

SourceLifespan·JournalJournal of Clinical Microbiology·DateMar 8, 2011

The science behind the cape

Physiologist E. Paul Zehr uses Batman as a framework to discuss exercise and physical training, illustrating how the body responds to physical discipline. His approach connects science to popular culture, helping students understand physiology better.

SourceAmerican Physiological Society·JournalAJP Advances in Physiology Education·DateMar 8, 2011

How can robots get our attention?

A team of researchers has successfully programmed a robot to understand when it gains a human's attention and when it falls short. Using social cues, the robot achieves close to 80% accuracy in detecting whether someone is paying attention or ignoring it. The findings could pave the way for robots to engage with humans more effectively.

Study analyzes role of PARP enzyme in eukaryotes

Researchers analyzed evolutionary history of poly(ADP-ribose)polymerase (PARP) superfamily in eukaryotes, finding ancestral proteins with diverse functions. The study suggests that the PARP superfamily is larger than previously documented and will grow as more eukaryotic genomes become available.

SourceOhio Supercomputer Center·JournalBMC Evolutionary Biology·DateMar 8, 2011

New instrument for analyzing viruses

Scientists have developed an instrument called PING that can analyze thousands of potential interactions between viruses and human cells. This device detects molecular interactions at a sensitivity 100- to 1,000-time greater than current methods, making it a promising tool for finding new treatments for viral infections.

The safety of daily magnesium oxide treatment for children with chronic constipation

A study published in the World Journal of Gastroenterology found that daily magnesium oxide treatment significantly increases serum magnesium concentrations in children with functional constipation. However, the magnitude of the increase appears modest, and younger age may be a relative risk factor for hypermagnesemia.

SourceWorld Journal of Gastroenterology·JournalWorld Journal of Gastroenterology·DateMar 8, 2011

How long does a tuning fork ring?

A team from Vienna and Munich has developed a numerical solver to predict the design-limited damping of mechanical resonators, enabling the creation of more efficient devices. The solver uses quantum mechanics to calculate the radiation of phonons from the resonator, removing the need for trial and error prototype fabrication.

SourceTechnical University of Munich (TUM)·JournalNature Communications·DateMar 8, 2011

ASGE initiative examines real-time endoscopic assessment of the histology of diminutive colorectal polyps

The ASGE has established guidelines for the use of real-time endoscopic assessment in managing diminutive colorectal polyps. The recommendations aim to minimize risk and delay while improving cost effectiveness of colonoscopy. Diminutive polyps are common, but pathological assessment can be costly and delay patient information.

SourceAmerican Society for Gastrointestinal Endoscopy·JournalGastrointestinal Endoscopy·DateMar 8, 2011

Making viruses pass for 'safe'

A team of scientists at the University of Pennsylvania has engineered a lentiviral vector that expresses CD47, a protein found on all cells, on its surface. This allows the virus to avoid being detected by the immune system, potentially making it safer for gene therapy and drug delivery.