Brightsurf Science News & Current Events

May 29, 2001
The mathematics of a lampshade
Does x^3+y^2+1 produce the same form as x^3+3y^2+xy^2? For cubic equations, it's possible to solve this problem, but equations of the fourth order are more difficult, such as x^4+y^3+2y^2=3, a curve shaped like a lampshade.

Pictures hardly subject to leaching during cleaning
If picture restorers are careful when using solvents, very few organic molecules are likely to be leached away from the paint layer.

U.S. high school finalists announced for International Chemistry Olympiad team
Twenty of the nation's top high school chemistry students, representing 12 states, will vie for a spot on the U.S. team in the International Chemistry Olympiad in India, July 6-15.

Animal welfare can now be 'objectively' measured
Analysing the well-being of farm animals such as pigs is no longer merely a matter of opinion.

Drug resistant HIV allows body to continue producing virus-fighting cells, Gladstone study finds
HIV that has become resistant to protease inhibitors may not be a dire sign of decline after all, research shows.

Professional mascots likely to suffer heat illness, injure knees
The furry- or feathered-costumed mascots at professional ball games may have more in common than entertaining the crowd: a high propensity for heat illness and other assorted injuries, according to a Johns Hopkins study.

Potential for new superconducting material advances
Commercial potential is growing for magnesium-diboride, a recently discovered high-temperature superconducting metal, with new evidence that alloying enables the metal to carry very high electric current at a high magnetic field.

New satellite maps provide planners improved urban sprawl insight
A major advance in satellite-based land surface mapping has led to the creation of more accurate and detailed maps of our cities.

Migrating impurities in ancient ice can skew climate research findings
Chemicals trapped in ancient glacial or polar ice can move substantial distances within the ice, according to new evidence from University of Washington researchers.

'Perfume' lures flies into trap
A Groningen research team has investigated how flies react to the odours of such things as old pork, bread and chicken manure.

Secret channel holds key to metabolic mysteries
Biologists have discovered a

Stress delays puberty
Research at Utrecht University has shown that when carp are subjected to stress, the development of their genital organs is delayed, so that they reach puberty later.

APL ships atmospheric spacecraft TIMED to Vandenberg for upcoming launch
A spacecraft that will explore one of the last frontiers in Earth's atmosphere is nearing launch.

Chemokines in allergic asthma
The recognition of two major classes of helper T cells, Th1 and Th2, has focused attention on the distinctive sets of cytokines produced by these cells and on their role in activating or suppressing inflammatory responses.

Virtual colonoscopy as effective at colon cancer screening as standard invasive colonoscopy, SFVAMC study finds
Many older adults dread colon cancer screening, because the most effective test, colonoscopy, is uncomfortable and invasive.

Physically fit, leaner older people are happier, study says
Older people who are more fit and have less body fat may also have a better outlook on life than their less active, less lean counterparts, according to a Johns Hopkins study.

New research shows mountain glaciers shrinking worldwide
In a talk Wednesday at the Spring Meeting of the American Geophysical Union in Boston, researchers from the United States Geological Survey (USGS)presented new research that shows that many of the world's mountain glaciers are shrinking.

AIDS in Africa has potential to affect human evolution, UC Berkeley scientists report
Infection and mortality rates from AIDS in southern Africa are so high that the disease could alter human evolution, say UC Berkeley theoretical biologists.

ORNL, partners working to keep trucks, nation on road to prosperity
Established programs in lightweight materials, intelligent vehicle systems and advanced diesels place the Department of Energy's Oak Ridge National Laboratory (ORNL) firmly in the cab when it comes to the 21st Century Truck Partnership.

A combination of zinc and vitamin A may restore night vision in pregnant Nepalese women
In a study of 202 pregnant women from Southern Nepal, Christian et al. determined that supplementation with zinc plus vitamin A, but not zinc alone, may restore night vision.

Ill winds carry toxic dust
Urban ecology researchers, using images taken from the Landsat Satellite to map the movement of dust in Arizona, find that development of agricultural and industrial land on city boundaries may contribute to the health dangers of dust.

Scientists monitor global air pollution from space
A new Earth-orbiting monitor is providing the most complete view to date of the world's air pollution as it churns through the atmosphere, crossing continents and oceans.

An improved method for monitoring national and global deforestation
Estimates of deforestation that are significantly better than those currently used by the United Nations can be developed using data from NASA's new Earth Observing System Terra satellite and a University of Maryland-developed method for mapping tree cover.

UF researchers reverse metabolic disorder in mice
In male laboratory mice, researchers have effectively reversed a condition known as PKU with a single treatment of gene therapy.

Stem cells help regenerate tissue damaged from heart attack
Researchers at Baylor College of Medicine found that stem cells taken from the bone marrow of an adult mouse and transplanted into the bone marrow of another mouse had the capability to transform into blood vessels and cardiac muscle, contributing to the restoration of tissue damaged from a heart attack.

UI researchers identify a genetic cause of juvenile polyposis
Researchers at the University of Iowa have identified a new gene that causes juvenile polyposis (JP), a condition where patients develop polyps in the gastrointestinal tract and colon and are at increased risk of developing colorectal and stomach cancers.

Single cocaine exposure triggers long-lasting surge of brain activity
A single exposure to cocaine triggers a week-long surge of activity in a brain region central to the development of addiction, according to new research on mice published this week in Nature.

Fairfax high school teacher wins regional chemistry teaching award
Donna West, a chemistry teacher at W.T. Woodson High School in Fairfax, Va., is being honored with the Middle Atlantic Regional High School Chemistry Teaching Award from the American Chemical Society.

Statins' beneficial effects on HDL
Statins are a widely prescribed family of drugs that lower levels of LDL by blocking synthesis of the cholesterol precursor mevalonate.

PAR-2 and protective gastric secretion
Kawabata and colleagues have shown previously that the protease-activated receptor PAR-2 can activate secretion.
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