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Science News Archive April 2004 - Page 4


Page 4 of 12

Coffee, tea or polishing slurry?

Researchers have developed a faster and more environmentally friendly polishing slurry using green tea extract, which can save hard-drive manufacturers millions of dollars in disposal costs. The new slurry works by binding to tiny particles on the surface of read-write heads, making them easy to remove with water.

Spiders make best ever Post-it notes

Researchers have discovered a molecular force used by spiders to attach themselves to surfaces, which could be the key to creating super-strong adhesive Post-it notes. The van der Waals force is so strong that it allows spiders to carry their own body weight on their feet while standing on ceilings.

SourceIOP Publishing·JournalSmart Materials and Structures·DateApr 25, 2004

Mothers' cells can cause immunity illness in children

A Mayo Clinic study found that most children with juvenile dermatomyositis (JDM) carry a particular gene from their mother, triggering an immune response. The research suggests that maternal cells may play a role in the development of JDM, a rare condition that causes inflammation and muscle damage.

SourceMayo Clinic·JournalThe Journal of Immunology·DateApr 23, 2004

Seabed secrets in English clay

Researchers found fossils of green sulfur bacteria and oxygen-breathing sea reptiles coexisting in Oxford Clay sediment, challenging the standard interpretation of the fossil record. The team's discovery suggests that environmental conditions were dynamic during deposition, possibly due to climatic changes.

SourceUniversity of Illinois Chicago·JournalGeology·DateApr 23, 2004

Hopkins scientists overcome main obstacle to making tons of short, drug-like proteins

Scientists at Johns Hopkins Medicine have overcome a major obstacle to creating large libraries of drug-like peptides. By modifying naturally occurring amino acids with a methyl group, they can produce up to 10 billion stabilized peptides in a single reaction. This breakthrough enables the rapid testing of potential medicines and has s...

SourceJohns Hopkins Medicine·JournalChemistry & Biology·DateApr 22, 2004

Something old, something new

Researchers Drs Sun and Arceci find that loss of PASG gene results in reduced genomic methylation and premature aging in mice. The study reveals a potential model for studying aging and epigenetic regulation, with implications for cancer predisposition and therapeutic targeting.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateApr 22, 2004

Smoking linked to more than 60 percent of overall cancer death burden in black men

A study found that tobacco smoke exposure is responsible for more than half the non-lung cancer death rate in African-American males, and up to two-thirds of their overall cancer death rate. The excess cancer burden can be clearly linked to smoking, with significant declines in mortality rates observed when smoking declined.

SourceUniversity of California - Davis Health·JournalPreventive Medicine·DateApr 22, 2004

Outbreak of skin infections sheds light on risk factors for bacterial resistance

A 1999 outbreak of furunculosis in rural Alaska identified individuals with MRSA who received more antibiotics, highlighting a link between antibiotic use and increased risk of skin infections. The study found that Panton-Valentine leukocidin virulence factor was present in nearly all methicillin-resistant isolates.

SourceInfectious Diseases Society of America·JournalThe Journal of Infectious Diseases·DateApr 22, 2004

Challenges facing a changing rural America

The book Challenges for Rural America in the 21st Century examines rural social change, economic transformation, and policy implications. Key findings include unevenly spread gaming benefits, elder care challenges, and the need for rural communities to adapt to a decentralized system.

UF study: Sibling violence leads to battering in college dating

A University of Florida study found that sibling violence is a predictor of dating violence, particularly among those who experienced physical abuse as children. The survey of over 500 participants revealed that siblings who were abused or perpetrated violence towards each other were more likely to engage in abusive behavior in their r...

SourceUniversity of Florida·JournalAmerican Journal of Health Behavior·DateApr 22, 2004