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Science News Archive 2008 - Page 74


Page 74 of 240

New study: Overbearing parents foster obsessive children

A Université de Montréal study found that controlling parents foster an obsessive passion for hobbies in children, whereas supportive parents promote a harmonious relationship. The research, which analyzed 588 musicians and athletes, suggests that excessive parental involvement can hinder a child's autonomy and enjoyment of their favor...

SourceUniversity of Montreal·JournalJournal of Personality·DateSep 18, 2008

Heart bypass surgery: deadly delays

A new study reveals that delayed elective coronary artery bypass graft (CABG) surgery significantly increases the risk of post-operative death. In contrast, performing CABG surgery within the recommended timeframe reduces the risk of death by approximately one-third.

SourceBMC (BioMed Central)·JournalBMC Health Services Research·DateSep 18, 2008

Scientists discover a new Pacific iguana

Scientists have discovered a new Pacific iguana species in central Fiji, Brachylophus bulabula, which joins only two other living species. The study found that each of the 13 islands where living iguanas were sampled showed distinct genetic lines not seen elsewhere, highlighting the need for conservation efforts.

Scientists find 'redesigned hammer' that forged evolution of pregnancy in mammals

Researchers at Yale University identified a key regulatory link in the evolution of pregnancy involving the altered function of HoxA-11 protein. This finding revolutionizes our understanding of how pregnancy evolved in mammals, highlighting a crucial genetic switch that tempered the immune system and allowed for internal development.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateSep 18, 2008

The prevalence of hepatitis B virus infection in inflammatory bowel disease patients

Research reveals a high incidence of hepatitis B virus infection among IBD patients, with 17% positive for anti-HBc and 2.3% positive for HBsAg. Studies suggest immunosuppressive drugs used in IBD treatment worsen HBV liver disease, emphasizing the importance of lamivudine use and HBV vaccination for high-risk patients.

SourceWorld Journal of Gastroenterology·JournalWorld Journal of Gastroenterology·DateSep 18, 2008

A breakthrough in contrast-enhanced intraoperative ultrasonography

Researchers have developed a new microbubble agent, Sonazoid, that enhances the sensitivity of contrast-enhanced intraoperative ultrasonography (CE-IOUS) for detecting occult liver lesions in patients with colorectal cancer. CE-IOUS using Sonazoid allows for longer imaging times and improved detection of metastases during hepatectomy.

SourceWorld Journal of Gastroenterology·JournalWorld Journal of Gastroenterology·DateSep 18, 2008

New mechanism for cardiac arrhythmia discovered

Researchers have discovered a molecular mechanism underlying cardiac arrhythmia, revealing that a virus receptor plays a crucial role in regulating heart rhythm. The study found that the receptor is essential for normal heart function and its absence or dysfunction leads to arrhythmia.

SourceHelmholtz Association·JournalJournal of Experimental Medicine·DateSep 18, 2008

As personalized, genomic medicine takes off, four developing countries show the way for others

Four developing countries are leading the way in establishing domestic capacity for genomic medicine, improving national health, reducing medical costs and bolstering economies. Mexico's program is the most comprehensive, with genotyped over 1,200 people to study genetic relationships with various health problems.

SourceSandra Rotman Centre for Global Health·JournalNature Reviews Genetics·DateSep 18, 2008

Collaboration helps police address job stress

A new police collaboration program has been launched to address job stress among officers, reducing stigma around seeking help. The program trains over 80 commanders and supervisors to recognize warning signs of operational stress.

SourceSAGE·JournalPolice Quarterly·DateSep 17, 2008

Homosexuals' negative feelings about sexuality predict poor mental and sexual health

A recent study published in the Journal of Homosexuality found that internalized homonegativity, or negative attitudes towards homosexuality, is a stronger predictor of poor mental and sexual health among gay men than the act of being homosexual itself. The research suggests that positive attitudes towards homosexuality are associated ...

SourceUniversity of Minnesota·JournalJournal of Homosexuality·DateSep 17, 2008

James Webb Telescope components pass tests

Development models for James Webb Telescope components have successfully passed temperature and vibration tests, allowing engineers to proceed with building actual instrument parts. The Mid-Infrared Instrument, which will operate between mid-infrared wavelengths of 5-28.5 microns, must be kept icy cold due to its extreme sensitivity to...

Coating copies microscopic biological surfaces

Penn State researchers have developed a method to rapidly and inexpensively copy biological surface structures using the conformal evaporated film by rotation (CEFR) technique. This technique enables the creation of coatings that capture the micro and nanostructure of biological surfaces, including metallic finishes and iridescent colors.

SourcePenn State·JournalApplied Physics Letters·DateSep 17, 2008

Fixed costs determine structure of the supermarket industry

A study published in the RAND Journal of Economics reveals that escalating investments in distribution systems drive a natural oligopoly in the supermarket industry. A small number of firms capture majority sales, regardless of market size, resulting in concentrated industry with better products.

SourceWiley·JournalThe RAND Journal of Economics·DateSep 17, 2008

UNC study: No need to repeat colonoscopy until 5 years after first screening

A new study found that people with an initial negative colonoscopy have a very low risk of developing colorectal cancer within five years. Based on this study, rescreening may not be necessary sooner than five years after the initial screening. The study's findings confirm what many gastroenterologists already believed.

SourceUniversity of North Carolina Health Care·JournalNew England Journal of Medicine·DateSep 17, 2008