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Science News Archive 2000 - Page 38


Page 38 of 66

Reaching out: Innovative program screens for sexually transmitted diseases

Researchers at Washington University School of Medicine implemented an STD study program that set up booths in community gathering places to offer urine screening for chlamydia and gonorrhea. The program identified 24 people with the diseases, most of whom were unaware they were infected, and successfully treated 90% of them.

SourceWashington University in St. Louis·JournalSexually Transmitted Diseases·DateJun 11, 2000

Personalized computer program increases smokers chances for successfully quitting by more than 50 percent

A self-help program using patented software increases smokers' success rates when combined with nicotine replacement therapy, shows a 56% increase in quitting at 12 weeks compared to standard materials. The Committed Quitters program provides tailored behavioral materials to support individuals in their quit attempt.

SourcePorter Novelli·JournalArchives of Internal Medicine·DateJun 10, 2000

Studies on HIV voluntary counseling and testing in developing countries show positive results

Two studies found that voluntary counseling and testing significantly reduces unprotected intercourse among HIV individuals and couples, with behavior changes maintained over time. The studies also estimate the intervention's cost-effectiveness, finding it averts infections and saves lives at a lower cost than other HIV interventions.

Water-bearing salt crystals come from dawn of solar system, UK researchers report inScience

Scientists at the University of Manchester and the Natural History Museum in London found water-bearing salt crystals within the Zag meteorite that may have formed just two million years after the solar system's birth. This discovery could indicate that hospitable conditions for life might have arisen earlier than previously thought.

How neutron stars get their kicks

Researchers propose two theories to explain the origin of neutron star kicks: the 'mass rocket,' which suggests a mass ejection asymmetry, and the 'neutrino rocket,' which relies on the intense magnetic field surrounding the newly formed neutron star. These theories aim to explain the observed high speeds of pulsars and the asymmetrica...

New approach to antibiotic resistance

Researchers create a new type of antibiotics that bind to bacterial protein-making machinery, preventing resistance. The approach could yield an antibiotic approximately 1,000 times more effective than the original, offering hope in combating the growing problem of antibiotic resistance.

SourceAmerican Chemical Society·JournalJournal of the American Chemical Society·DateJun 7, 2000

UC Irvine molecular biologists discover key protein interaction that stabilizes cholesterol levels in cells

UC Irvine molecular biologists have discovered a key protein interaction that regulates cholesterol levels in cells, which may provide insights into heart disease and stroke prevention. The study found that a regulatory protein called Sp1 recruits a co-regulating protein to activate genes that balance cholesterol levels.

SourceUniversity of California - Irvine·JournalProceedings of the National Academy of Sciences·DateJun 6, 2000

DNA-repair machine maintains genomic stability

Mouse cells lacking nonhomologous DNA end-joining (NHEJ) pathway show high levels of chromosome breakage and genetic material rearrangement, highlighting its critical role in maintaining genomic stability. The study also reveals that NHEJ is essential for repairing damaged chromosomes induced by ionizing radiation.

SourceHoward Hughes Medical Institute·JournalProceedings of the National Academy of Sciences·DateJun 5, 2000

People link career success with names, study finds

A new study found that people tend to predict career success based on the gender match between an applicant's name and occupation. The research suggests that women with feminine names are more likely to succeed in traditional female occupations, while men with masculine names excel in male-dominated careers.

SourceOhio University·JournalThe Journal of Social Psychology·DateJun 5, 2000

Fragmented Forest, Fragmented Food

A study found that forest fragments have insufficient food for some songbirds, leading to reduced feeding visits and longer breeding cycles. The researchers believe that microclimates within small fragments may contribute to lower insect populations, affecting the birds' survival.

SourceEcological Society of America·JournalEcology·DateJun 5, 2000

New theory on the mystery of the origin of life proposed by Weizmann Institute scientists

Researchers suggest that early life forms could have emerged from heterogeneous lipid assemblies, with information stored in composition rather than sequence. This model offers a solution to the long-standing question of how lipid assemblies could carry and propagate information.

SourceAmerican Committee for the Weizmann Institute of Science·JournalProceedings of the National Academy of Sciences·DateJun 4, 2000