Add BrightSurf on Google Email

Science News Archive September 2009 - Page 16


Page 16 of 24

Globally, 2 in 5 adolescent deaths are due to injuries and violence, and death rates much lower in high-income countries

The study reveals that nearly two-thirds of adolescent deaths in sub-Saharan Africa and Southeast Asia occurred, despite these regions containing only 42% of the global 10—24-year-old population. Traffic accidents and violence were among the leading causes of death, with more than half of all deaths due to injuries or violence.

SourceThe Lancet_DELETED·JournalThe Lancet·DateSep 10, 2009

Children with fatter midsections at increased risk for cardiovascular disease

Researchers found that obese children with larger waists are more likely to develop risk factors for cardiovascular disease, including high triglycerides and low HDL levels. Routine waist measurements may help identify which children are at a greater risk of developing the warning signs of cardiovascular disease.

SourceMedical College of Georgia at Augusta University·JournalInternational Journal of Pediatric Obesity·DateSep 10, 2009

CSIRO sets science path for new telescope

The CSIRO has chosen 10 major science projects for its Australian SKA Pathfinder (ASKAP) telescope, which will tackle astrophysical issues and advance the field of astronomy. The projects include a deep survey for star-forming galaxies and a survey for galaxies containing neutral hydrogen gas.

Ground Zero-scale trauma can prompt psychological growth, says UB researcher

A University at Buffalo researcher has found that people who live through traumatic experiences can bounce back and even grow stronger, thanks to certain qualities such as emotional expression, social support, and a positive outlook. These factors are crucial in predicting levels of distress and resilience among trauma survivors.

SourceUniversity at Buffalo·JournalThe Journal of Nervous and Mental Disease·DateSep 10, 2009

A boy for every girl? Not even close

A new study published in Current Biology found that a parasite killing male butterflies caused a rapid shift in the sex ratio of a tropical butterfly species, from 2:1 to 10:1. The researchers used museum specimens and modern tools to analyze the changes, providing insight into evolutionary processes.

SourceCell Press·JournalCurrent Biology·DateSep 10, 2009

Common mental disorders may be more common than we think

A longitudinal study of over 1,000 New Zealanders from birth to age 32 found that people underreport mental illness, and the actual rate of anxiety, depression, and substance dependency may be higher. The study's findings challenge current diagnostic standards and suggest that mental illness may be more common than previously thought.

SourceDuke University·JournalPsychological Medicine·DateSep 10, 2009

Dexamethasone-based therapy shows improvement in survival for children with acute lymphoblastic leukemia

A new treatment protocol using dexamethasone instead of prednisone and less intensive chemotherapy showed similar event-free survival in non-high risk patients but better results in high-risk patients, reducing the risk of side effects. Overall, the treatment strategy improved survival rates for children with acute lymphoblastic leukemia.

SourceThe Lancet_DELETED·JournalThe Lancet Oncology·DateSep 9, 2009

Link found between common sexual infection and risk of aggressive prostate cancer

A strong association has been found between Trichomonas vaginalis infection and advanced, lethal prostate cancer in men. The study, published on the Journal of the National Cancer Institute website, analyzed blood samples from 673 men with prostate cancer and compared infection status to 673 control subjects.

SourceHarvard T.H. Chan School of Public Health·JournalJNCI Journal of the National Cancer Institute·DateSep 9, 2009

Light at the speed of a bicycle and much more

Advances in optics and photonics are transforming our daily lives with innovations like optical fibers, lasers, and medical imaging techniques. Researchers are now exploring the potential of plasmonics to develop metamaterial-based invisibility cloaks and super-strength solar cells.

UAB researchers find TB-prevention therapy is cost-effective option

Researchers at UAB found that preventive antibiotic TB therapy for HIV-infected patients is approximately $950 per case, compared to a previously reported range of $900-$1500 for treating new smear-positive TB cases. The integrated care approach also offers economic benefits by reducing productivity losses and preventing the spread of TB.

SourceUniversity of Alabama at Birmingham·JournalThe International Journal of Tuberculosis and Lung Disease·DateSep 9, 2009

Graphitic memory techniques advance at Rice

Researchers simplify fabrication of nano storage, creating a potentially very dense, stable nonvolatile memory for digital devices. The graphite-based approach uses industry-standard lithographic techniques to deposit amorphous graphite onto silicon, facilitating the creation of reliable memory bits.

SourceRice University·JournalACS Nano·DateSep 9, 2009

Toward a nanomedicine for brain cancer

Scientists have developed nanoparticles that can target and destroy glioblastoma multiforme (GBM) brain cancer cells using light-sensitive titanium dioxide material. The 'nanobio hybrids' killed up to 80% of brain cancer cells after exposure to focused white light, making them a promising part of brain cancer therapy.

SourceAmerican Chemical Society·JournalNano Letters·DateSep 9, 2009