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Science News Archive 2000 - Page 46


Page 46 of 66

New research shows that even for infants, toddlers better-quality care boosts thinking, language skills

A new study by University of North Carolina at Chapel Hill researchers found that high-quality childcare improves intellectual and language skills in infants and toddlers, even in those from low-income families. The study followed 89 black children in 27 U.S. care centers between ages 6 months and four years.

SourceUniversity of North Carolina at Chapel Hill·JournalChild Development·DateApr 26, 2000

Getting to the core of reovirus

Researchers at the Howard Hughes Medical Institute solved the structure of the reovirus core, a double-stranded RNA virus that bears similarity to pathogens such as rotavirus. The study reveals how the core synthesizes, modifies, and exports viral messenger RNA, ultimately leading to viral replication and takeover of host cells.

Study: Thoughts of fathers often trouble Vietnamese Amerasians

A new study at Ohio State University suggests that Vietnamese Amerasians' thoughts and feelings about their American biological fathers play a powerful role in how well they adjust to life in the United States. The study found that those who reported frequent thoughts of their biological father experienced higher levels of psychologica...

SourceOhio State University·JournalJournal of Community Psychology·DateApr 26, 2000

New immigrants find streets aren't paved with gold: Study

A recent University of Toronto study found that new immigrants to Canada are significantly worse off financially than earlier generations of newcomers. The study attributes this trend to the rising level of education in native-born Canadians, making it difficult for new immigrants to compete for jobs. As a result, the income gap betwee...

SourceUniversity of Toronto·JournalJournal of Social Issues·DateApr 25, 2000

Tarlike macro-molecules detected in 'stardust'

Researchers have found that most of the interstellar dust particles consist of 3-dimensionally cross-linked organic macro-molecules, called polymeric-heterocyclic-aromates. These molecules have been detected in five impact mass spectrometer samples from NASA's STARDUST spacecraft.

New antibiotic-resistant salmonella bacteria identified; Study appears in New England Journal of Medicine

Researchers have identified a new strain of antibiotic-resistant salmonella bacteria in the US, prompting concerns over effective treatment options. The bacteria, which is resistant to cephalosporins, has been linked to outbreaks in poultry and other foods, posing a significant threat to public health.

SourceUniversity of Nebraska Medical Center·JournalNew England Journal of Medicine·DateApr 25, 2000

Cancer-protective regimen demonstrated, for first time, to prevent tobacco smoke-related lung tumors -- in mice

A chemoprevention regimen containing myoinositol and dexamethasone has been shown to effectively prevent lung tumors in male mice exposed to cigarette smoke. The regimen worked when given daily during exposure or after the mice had returned to clean air, reducing tumor incidence by nearly 40%.

Physician and nurse recommendations and media messages associated with placing infants on their backs to sleep

A recent study found that physician recommendations and media messages significantly influenced caregivers' decisions to place infants on their backs for sleep. Between 1994 and 1998, the percentage of white infants sleeping on their backs increased from 27% to 58%, while black infant back sleep rates rose from 17% to 31%. The study su...

Vitamin K intake may be helpful in preventing hip fracture

A study published in the American Journal of Clinical Nutrition found that high vitamin K intake was associated with lower incidence of hip fractures in elderly participants, while no correlation was found with bone mineral density or apo-E genotype. Researchers analyzed data from the Framingham Heart Study and discovered a significant...

SourceAmerican Journal of Clinical Nutrition·JournalAmerican Journal of Clinical Nutrition·DateApr 24, 2000

Lower metabolic rate places black women dieters at greater risk for weight regain

A study published in the American Journal of Clinical Nutrition found that black women who lost weight through dieting had a significantly lower energy expenditure than white women. The researchers suggest that differences in body composition, including denser bones and more lean tissue in the limbs, may contribute to this disparity.

SourceAmerican Journal of Clinical Nutrition·JournalAmerican Journal of Clinical Nutrition·DateApr 24, 2000

Neuronal growth in the brain may explain phantom limb syndrome

Researchers at Vanderbilt University found that neurons in adult monkey brains grow and form new connections in somatosensory areas after amputation or spinal cord injury, suggesting a link to phantom limb syndrome. This discovery may lead to treatment options for phantom limb pain and potentially repair severed spinal cord injuries.

SourceVanderbilt University·JournalProceedings of the National Academy of Sciences·DateApr 24, 2000

Smoking cessation aids help smokers quit

A recent study found that nearly 20% of smokers who attempted to quit in California used smoking cessation aids, including self-help materials, counseling, and nicotine replacement therapy. The use of these aids increased the odds of success in quitting, with 15% of those who sought assistance abstaining from cigarettes for 12 months.

SourceCenter for Advancing Health·JournalAmerican Journal of Preventive Medicine·DateApr 23, 2000