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Science News Archive October 2004 - Page 11


Page 11 of 13

Botulism bug says no to nitric oxide, provides key to molecule's role in human cell signaling

The study reveals how botulism-causing Clostridium botulinum detects nitric oxide, shedding light on its role in human cardiovascular, neurological, and immunological systems. The research also provides insights into the structural details of soluble guanylyl cyclase, a protein difficult to crystallize for analysis.

Smoking and the risk of rheumatoid arthritis

A large population-based study found that current smokers have a 2.8-7.5 times increased risk of rheumatoid factor positive RA, while those with the SE gene have a 15.7 times higher risk. The study suggests a strong interaction between smoking and the shared epitope gene in increasing disease risk.

SourceWiley·JournalArthritis & Rheumatism·DateOct 7, 2004

K-State's Walter Schumm has analyzed whether defeat of Hussein reduced suicide attacks in Israel

Schumm's study analyzed the impact of Iraq's payments to Palestinian families fighting Israelis on suicide bombings. He found a significant reduction in fatalities after the invasion, with potential prevention of up to 1,100 casualties. Improved antiterrorism intelligence within Israeli security forces may also have played a role.

SourceKansas State University·JournalPsychological Reports·DateOct 7, 2004

Why rocks curl

Researchers developed an experiment to measure the behavior of curling stones, revealing that wet friction is involved in their curl. The study found that a thin liquid layer reverses the dominant frictional force on the stone, resulting in a clockwise-turning stone curling to the right.

SourceNatural Sciences and Engineering Research Council·JournalCanadian Journal of Physics·DateOct 7, 2004

Viruses found in untreated city water

A study by Marshfield Clinic and USGS revealed that untreated city water in La Crosse contains various types of gastrointestinal viruses, including enteroviruses, rotavirus, hepatitis A virus, and norovirus. The presence of these viruses poses a risk to the drinking water supply, particularly in shallow sand and gravel aquifers.

SourceMarshfield Clinic·JournalApplied and Environmental Microbiology·DateOct 6, 2004

A watch that's smarter than you?

A smart watch system prototype has been developed at the University of Washington, utilizing RFID tags to provide proactive reminders and track essential items. The system aims to seamlessly integrate technology into daily life, making it more convenient for busy individuals.

Astronomers tackle 400-year-old heavenly mystery

Using the Spitzer Space Telescope, Hubble Space Telescope, and Chandra X-ray Observatory, researchers observed the Kepler's supernova remnant, uncovering a bubble-shaped shroud of gas and dust expanding at 4 million miles per hour. The observations revealed distinct features, including heated interstellar dust and regions of hot gas.

Next step to the quantum computer

Researchers at the University of Bonn have successfully built a quantum register using neutral atoms, enabling the storage and manipulation of quantum information. The achievement marks a significant milestone in the development of quantum computing, which could potentially solve complex problems beyond current computer capabilities.

SourceUniversity of Bonn·JournalPhysical Review Letters·DateOct 6, 2004

Fewer arrests, auto accidents and ER visits among young adults counseled for high-risk drinking

A randomized clinical trial found that brief alcohol counseling resulted in long-term reductions in high-risk drinking behaviors and adverse events among young adults. Counseling led to a 40-50% decrease in alcohol use and a significant reduction in emergency department visits, auto accidents, and arrests.

SourceAmerican Academy of Family Physicians·JournalThe Annals of Family Medicine·DateOct 5, 2004