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Science News Archive October 2007 - Page 10


Page 10 of 21

Computer solution to delivery problem

Researchers have developed a computer solution to cut journey times of courier services, reducing fuel consumption and improving timely drop-offs. The new approach uses a heuristic-based model that can process real-time requests and re-route vehicles to minimize distance traveled.

SourceInderscience Publishers·JournalInternational Journal of Logistics Systems and Management·DateOct 18, 2007

Research for a better old age

The New Dynamics of Ageing Programme has funded 12 research projects, totaling £3million, to investigate various aspects of ageing. These studies aim to enhance the quality of life, productivity, and self-sufficiency of older adults, with a focus on improving their health, social engagement, and community support.

Brightness and darkness as perceptual dimensions

A new study suggests that achromatic colors exist in a two-dimensional (2-D) color space composed of brightness and darkness dimensions. This model generalizes to the chromatic dimensions of color perception, indicating six perceptual dimensions rather than the conventional three.

SourcePLOS·JournalPLOS Computational Biology·DateOct 18, 2007

Schools not sustaining mental health aid to children displaced by Hurricanes Katrina and Rita

A RAND Corporation study found that many schools in Louisiana, Mississippi, Alabama, and Texas struggled to provide ongoing mental health support to students displaced by the hurricanes. Despite initial efforts, schools often returned to academics-only focus within six months, citing barriers such as lack of resources and staff training.

SourceRAND Corporation·JournalPsychiatric Services·DateOct 18, 2007

Sidestepping cancer's chaperone

Researchers at UMass Medical School have identified a new pathway for cancer cell growth and survival, providing a blueprint for the design of novel anticancer agents. The study found that targeting the Hsp90 chaperone in the mitochondria can induce massive tumor cell death while sparing normal cells.

SourceUMass Chan Medical School·JournalCell·DateOct 18, 2007

Septic survival

A recent study published in Critical Care found that children under four are highly susceptible to sepsis, which can lead to severe disease states and death. The study analyzed data from nearly 300 children with sepsis and purpura between 1988 and 2006, revealing that younger age is a critical factor in determining survival rates.

SourceBMC (BioMed Central)·JournalCritical Care·DateOct 17, 2007

Aspirin -- just for men?

A recent study found that trials with predominantly male participants showed significant risk reduction in non-fatal heart attacks when taking aspirin. In contrast, trials with mostly female participants failed to demonstrate a similar benefit. The researchers highlight the importance of considering gender when prescribing aspirin for ...

SourceBMC (BioMed Central)·JournalBMC Medicine·DateOct 17, 2007

Fossilized cashew nuts reveal Europe was important route between Africa and South America

Researchers have discovered fossilized cashew nuts in Germany, dating back 47 million years, which suggest that the genus Anacardium was once distributed in Europe. This finding indicates that Europe may be an important biogeographic link between Africa and South America, challenging previous theories.

SourceUniversity of Chicago Press Journals·JournalInternational Journal of Plant Sciences·DateOct 17, 2007

Study questions assumptions about human sensitivity to biological motion

A recent study published in Journal of Vision found that humans may not be more sensitive to biological motion compared to non-biological motion. The research, led by Dr. Eric Hiris, tested the effectiveness of masks and target sizes to determine detection performance, and concluded that humans do not exhibit enhanced sensitivity.

Lennart Nilsson Award 2007

Felice Frankel, a renowned scientific imagist, has been awarded the 2007 Lennart Nilsson Award for her exceptional work in creating crystal-clear scientific illustrations. Her photographs reveal previously invisible aspects of the world and have captivated the attention of scientists and the general public alike.

USC study examines effects of caregiving

A USC Davis School of Gerontology study found that caregivers showed few negative mental or physical health effects, contrary to myths about caregiving. The research analyzed ethnic differences among caregivers tending to people with dementia and found unique health risks for African-American caregivers.

SourceUniversity of Southern California·JournalAging & Mental Health·DateOct 17, 2007

Preventing tuberculosis reactivation

Researchers developed a computational model to predict TB reactivation causes and developed a TNF-modulating agent to balance inflammation reduction with infection resistance. Modifying anti-TNF treatment dosages and timing or using TB antibiotics before treatment can also prevent reactivation, according to the study.

SourcePLOS·JournalPLOS Computational Biology·DateOct 17, 2007

Scientists spy enzyme that makes us unique

Researchers at the University of Leeds have mapped the 3D structure of T7 endonuclease 1 enzyme, responsible for splitting DNA strands and creating genetically unique offspring. The discovery is expected to shed light on human individuality and viral replication mechanisms.

SourceUniversity of Leeds·JournalNature·DateOct 17, 2007

Study: HPV test beats Pap in detecting cervical cancer

A new study from McGill University finds that the HPV screening test outperforms the traditional Pap test in detecting pre-cancerous lesions without false negatives. The HPV test achieved an accuracy of 94.6%, while the Pap test only reached 55.4% accuracy, making it a more reliable method for cervical cancer screening.

SourceMcGill University·JournalNew England Journal of Medicine·DateOct 17, 2007

Obese children show early signs of heart disease

Research by Washington University School of Medicine found that obese children exhibit early heart disease symptoms, similar to those seen in obese adults. The study analyzed 168 children aged 10-18 and used a new imaging technique to track changes in the heart's muscular wall.

SourceWashU Medicine·JournalJournal of the CardioMetabolic Syndrome·DateOct 17, 2007

Feeling sleepy is all in your genes

Research published in BMC Neuroscience found that genetic genes controlling the body clock also regulate the need for sleep, linking sleep to energy metabolism. The study used mice with different genetic make-ups to explore this connection, revealing changes in gene expression associated with sleep deprivation and recovery.

SourceBMC (BioMed Central)·JournalBMC Neuroscience·DateOct 17, 2007

Scientists estimate state-by-state mercury emissions from US fires

A new study estimates that US forest fires release about 30% of the nation's total mercury emissions, primarily affecting the environment and human health. The Southeast region emits the most mercury, followed by Alaska and California, highlighting the need for better protection measures.

The fastest continent

A team of researchers has found that the Indian plate is only about 100 km thick, whereas the other parts of Gondwanaland are about 200 km thick. This discovery explains why India moved faster and further than the other parts of the supercontinent during its break-up.

SourceHelmholtz Association·JournalNature·DateOct 17, 2007