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Science News for September 17, 2004


How preschool intervention leads to greater educational attainment

A study found that preschool participation significantly increases rates of high school completion and lowers juvenile arrest rates. The primary contributors to these outcomes include attendance in high-quality elementary schools and parental involvement in school.

SourceSociety for Research in Child Development·JournalChild Development·DateSep 17, 2004

Genetic modification of linseed produces healthier omega 3 and 6 fatty acids

Researchers produced genetically modified linseed plants that accumulate significant levels of very long chain poly-unsaturated fatty acids (PUFA) in seed, improving human nutrition. The production of these oils in plants may reduce unsustainable pressures on fisheries and provide a sustainable alternative for consumers.

SourceAmerican Society of Plant Biologists·JournalThe Plant Cell·DateSep 17, 2004

Middle childhood development and later adult outcomes

Research on the 1970 British Cohort Study found that middle childhood development significantly affects adult outcomes. Children's relative cognitive ability changes between ages 5 and 10 are crucial, as those who 'escape' their initial performance tend to have better life chances and reduced risk of negative adult outcomes.

SourceSociety for Research in Child Development·JournalChild Development·DateSep 17, 2004
Fluke 87V Industrial Digital Multimeter

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Adolescents, their parents, and decisions: Who decides?

The study found that adolescents' autonomy increased over five years, with more independence in personal and multifaceted issues as they aged. Parental involvement in prudential and conventional decisions was associated with better adjustment, while joint decision-making on multifaceted issues predicted positive outcomes.

SourceSociety for Research in Child Development·JournalChild Development·DateSep 17, 2004

Family predictors of girls' sex-typed activities

Girls spent more time in feminine activities with lower testosterone levels and reported interest, while masculine activities increased until age 13. Family characteristics, such as personality traits and attitudes, also predicted involvement in sex-typed activities.

SourceSociety for Research in Child Development·JournalChild Development·DateSep 17, 2004

Algal contact as a trigger for coral disease

Macroalgae, particularly Halimeda opuntia, triggers a virulent white plague type II disease in corals. The alga is also found to be a reservoir for the causative agent Aurantimonas coralicida.

SourceBlackwell Publishing Ltd.·JournalEcology Letters·DateSep 17, 2004
Aranet4 Home CO2 Monitor

Aranet4 Home CO2 Monitor tracks ventilation quality in labs, classrooms, and conference rooms with long battery life and clear e-ink readouts.

22nd amino acid synthesized and added to genetic code of e. coli bacteria

Researchers have successfully synthesized the 22nd amino acid, L-pyrrolysine, and demonstrated its incorporation into new proteins within E. coli bacteria. The discovery explains how this amino acid is inserted into proteins inside living cells, following a traditional path that had been predicted by scientists.

SourceOhio State University·JournalChemistry & Biology·DateSep 17, 2004

Is home visiting an effective strategy?

A meta-analytic review found that home visiting programs enhance parenting behaviors, increase educational attainment, and boost children's cognitive and social skills. While the benefits are statistically significant, the magnitude of the impact varies.

SourceSociety for Research in Child Development·JournalChild Development·DateSep 17, 2004

Chemical genetics identifies SARS inhibitors

Chemical genetics was used to identify novel small-molecule inhibitors of severe acute respiratory syndrome-associated coronavirus. The study revealed four compounds that effectively inhibited the replication of the virus, providing new hope for the treatment of SARS.

SourceCell Press·JournalChemistry & Biology·DateSep 17, 2004

New technique for thyroid cancer therapy eliminates many side effects

Researchers in The Netherlands and Belgium developed a new technique that uses genetically engineered rhTSH to stimulate thyroid cancer cells to absorb radioactive iodine, avoiding hypothyroidism and increasing safety. This approach may allow higher doses of radioiodine to be used when needed, improving treatment efficacy.

SourceSociety of Nuclear Medicine and Molecular Imaging·JournalJournal of Nuclear Medicine·DateSep 17, 2004
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Teenagers' perceptions of math and English

A study of 1,323 students found that teenage perceptions of math and English changed over time, with boys generally liking math more and girls preferring English. Initially, girls found math harder than boys but this gap narrowed by senior years.

SourceSociety for Research in Child Development·JournalChild Development·DateSep 17, 2004

Researchers develop fast track way to discover how cells are regulated

A team of researchers has developed a fast-track method to identify regulatory sequences in the genome that control cell growth and development. The study, published in Science, used a unique algorithm called Improbizer to predict where these regulatory sequences might be found in the genome.

SourceUniversity of Utah Health·JournalScience·DateSep 17, 2004

Preferential parental treatment of siblings

Research found that differential parenting, particularly negative behavior, is linked to child maladjustment and aggressive-disruptive behavior. The study suggests parents should follow a principle of fairness in dealing with their children, but acknowledges that special circumstances require different treatment.

SourceSociety for Research in Child Development·JournalChild Development·DateSep 17, 2004

Scientists shed light on mechanism behind beneficial effects of red wine

Researchers have deciphered the three-dimensional structure of a plant enzyme that produces resveratrol, a key component of red wine with impressive health benefits. The study provides new insights into the relationships among plant proteins, shedding light on how grapes produce resveratrol to defend against fungal invasion.

SourceU.S. National Science Foundation·JournalChemistry & Biology·DateSep 17, 2004
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