Brightsurf Science News & Current Events

July 24, 2002
Light from gas bubbles: Sonoluminescence measured
A gas bubble excited by ultrasound turns a tiny fraction of the sound energy into light.

Scientists measure energy dissipation in a single cavitating bubble
Like fireflies, bubbles trapped and energized by ultrasound emit light in a periodic rhythm.

Research to estimate pesticides' effects on children
As children begin to explore their surroundings, they inevitably come in contact with a wide array of potentially harmful substances -- from paints to pesticides -- that can be swallowed, inhaled and even absorbed through the skin.

UMass, Mass. Dept. of Food & Agriculture warn: Invasive weed can cause blisters, blindness
Gardeners, landscapers, farmers, hikers and others who spend time outdoors are being urged to watch out for an invasive, noxious weed that has been found in Massachusetts.

Conference considers satellite's contributions to understanding global energy, water cycle
Researchers at the International Tropical Rainfall Measuring Mission (TRMM) Science Conference this week will discuss the TRMM satellite and its role in monitoring the global hydrological cycle as part of the overall NASA Earth Science program.

Platelet molecule regulates blood coagulation, study finds
New research at the University of North Carolina at Chapel Hill has found that a fatty molecule on the surface of platelet cells is a regulator of blood coagulation.

Researchers discover shift in organisms causing early-onset sepsis in low-birth-weight infants
Although the overall rate of early-onset sepsis in low-birth-weight newborns has not changed significantly over the past decade, researchers have discovered a recent shift in the organisms responsible for the systemic infection -- from primarily gram-positive bacteria to primarily gram-negative organisms, especially E. coli.

Physics tip sheet #23 - July 24, 2002
Highlights of this issue include the death of bubble fusion, splitting photons, cosmic rays causing ice ages and quantum tweezers for atoms.

Los Alamos experiment speeds up aging of nuclear weapons with 'spiked' plutonium
Plutonium is the main ingredient of weapons in the U.S.

Men die young, even when they're old
Being a man is bad for your health. It doesn't seem to be just the thrill of taking risks as a young adult that makes men more likely to die than women.

Kids need repeated messages, support on healthy eating
Middle schoolers exposed to an intensive campaign urging them to eat more fruits and vegetables actually did so, but not enough to improve their overall eating patterns, according to the study published in the July/August issue of Health Education & Behavior.

Los Alamos hosts international regional spectral model workshop
The fourth International Workshop on Regional Spectral Models will be held at the Department of Energy's Los Alamos Laboratory from July 31 to Aug.

Case Western Reserve University researchers developing new treatment for cardiovascular disease
Researchers at Case Western Reserve University are developing an innovative drug delivery device to help treat cardiovascular disease.

Geology and GSA Today media highlights -- August
Topics include: glaciers in southwest Alaska yield new evidence that ocean surface currents and atmospheric circulation link the climates of the North Atlantic and North Pacific; first report of a Pacific margin sequence containing paleolandslide and catastrophic sedimentation deposits linked to the Chicxulub bolide impact at the Cretaceous-Tertiary (K-T) boundary; and regional climate change and local faulting have contributed to temporal and lateral variations in incision rates in the Grand Canyon of the Colorado River.

School program reduces risk of obesity, disease in border community
Children targeted by a school-based exercise and nutrition program are more likely to be physically active and receive healthy meals at school, which in turn may reduce the kids' risk of obesity, Type 2 diabetes and heart disease, according to new research.

Computer predicts outcome of breast cancer
A computer has predicted the outcome of breast cancer cases with 88 per cent accuracy.

Breakthrough in profiling of yeast genome
An international team of researchers that is publishing the results of the first-ever comprehensive genetic profiling of any organism, in this case yeast, which has proved a successful model for understanding the basic functions of human cells.

CWRU scientists demystify protein at root of arthritis
Researchers at Case Western Reserve University have discovered kinks in aggrecan, a widely studied protein at the submolecular root of arthritis, a finding that brings scientists closer toward new drugs and other interventions to prevent or alleviate the disease.

Scientists visualize waves in space caused by black-hole mergers
Merging black holes will rock the fabric of space and time with gravitational waves that start quiet, grow to a thunderous roar at the moment of impact, and then resonate from the final gong, according to international team of scientists who have created a novel computer model of such a merger based on Einstein's equations.

Variability in West Antarctic ice streams normal
Variability in the speed of the ice streams along the Siple Coast of West Antarctica is not an indication the ice sheet is stabilizing, but rather, that capriciousness in the ice streams, their rates and the location of the grounding line is normal and will continue to occur, according to Penn State geoscientists.

Fighter's laser may blind civilians
American defence contractors are developing a laser weapon for fighter aircraft that could potentially be powerful enough for its scattered beams to blind anyone nearby.

Artificial antibodies created by new molecular imprinting process
Nature is adept at producing molecules that recognize and bind other molecules.

Antiretroviral therapy in HIV-infected children can stop neurological damage
Treating HIV-infected children with antiretroviral therapy can stop and potentially even reverse neurological damage caused by HIV, doctors from UT Southwestern Medical Center at Dallas report in an international study.

Researchers identify defect that causes rare muscular dystrophies
Subtle defects in the processing of a single protein that provides structural integrity to muscle cells can lead to several devastating forms of muscular dystrophy, according to studies by Howard Hughes Medical Institute researchers and their colleagues at the University of Iowa.
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