Brightsurf Science News & Current Events

May 29, 2002
Directed antisense expression moderates feeding and weight gain
Rats receiving the hormone ghrelin as a direct injection into the hypothalamus respond with vigorous feeding and reduced fat metabolism.

Warming temperatures may freeze North American timber industry
Global warming trends may seriously harm North America's stronghold on the timber production industry, a recent study suggests.

'Bad bubbles,' semiconductors, new furnaces make Space Station 'hotbed' for materials research
Scientists will soon turn the International Space Station into a materials research laboratory to study

Mature stem cell transplants linked to treatment of cerebral palsy
Whether transplantation of mature stem cells can help babies with cerebral palsy is the study focus of a Medical College of Georgia physician-scientist.

Tumor vaccines via dendritic cells
Dendritic cells (DCs) can process and present tumor cell-specific antigens, activating CD8+ T lymphocytes to destroy tumor cells.

Democracy strengthened when citizens belong to some types of voluntary associations, study says
Americans have always been known as joiners, actively taking part in civic clubs, bowling leagues and parent-teacher organizations.

DuPont to launch soybeans into space
In the first space experiment of its kind, DuPont will begin space exploration tomorrow in a partnership with NASA designed to discover new scientific research about one of the most consumed crops in the world today - soybeans.

Tobacco industry youth anti-smoking programs designed to promote the industry, study shows
The tobacco industry's own documents show that most youth smoking prevention programs it has supported are designed to promote industry political and marketing aims rather than to reduce smoking, according to researchers who analyzed nearly 500 industry documents.

Terrorism response, radon in Fairfax homes among topics at regional scientific meeting, May 28-30
At the 35th annual Mid-Atlantic Regional Meeting of the American Chemical Society, researchers will discuss a wide variety of chemical advances, highlighted by measurements of radon in Fairfax, Va., homes, a description of a DNA forensic response to the September 11 tragedy, and a discussion of the next generation of genetically modified crops.

Researchers develop methods to characterize diamonds
Diamonds may be a girl's best friend, but the qualities that make some diamonds so sought after are the same qualities that make them difficult to characterize and fingerprint, according to a Penn State geoscientist.

Studies yield key insights in preventing destruction of insulin-producing cells
The findings of two studies appearing in The New England Journal of Medicine (NEJM) on May 30 bring researchers a step closer to the goals of preventing type 1 diabetes and of preserving insulin production in people newly diagnosed with the disease.

UCLA scientists image how Parkinson's genes misfire in mice
UCLA scientists have developed a fast new way to image how thousands of genes misfire proteins in a mouse model of Parkinson's disease.

Metals - the 'new renewables'
Metals can help in achieving globally sustainable development, two leading Australian researchers claimed today.

Next up for wireless communication: The computer chip itself
The silicon chip may soon join the growing list of devices to go wireless, a development that could speed computers and lead to a new breed of useful products.

That scar on your arm won't help if the man next to you has smallpox
If you had a smallpox vaccination as a child and think you're still protected, think again.

Stress detector could aid military troops, pilots, emergency personnel
At the 35th annual Mid-Atlantic Regional Meeting of the American Chemical Society, researchers unveiled a detection system that could become part of a device that monitors a soldier's stress level.

Ecologists simplify population theory
Analyzing a single species in a food web is easier than it appears to be, according to scientists publishing in this week's issue of Nature.

Use of tampons and sexual activity protect women against endometriosis
Using tampons and engaging in sexual activity appears to protect women against developing endometriosis, according to research by a Yale physician.

Irregular periods in young women could be warning sign for later osteoporosis
Irregular menstrual periods in young women may be a warning sign of a hormonal shortage that could lead to osteoporosis, according to a preliminary study by researchers at the National Institute of Child Health and Human Development (NICHD).

Columbia University study ties the frequency of earthquakes to ocean tides
Recordings of small earthquakes on an active seafloor volcano show that seismic activity is correlated with ocean tidal lows.

New drugs could markedly alter Alzheimer's, but disease will not go away
The number of people living with Alzheimer's disease will at least double by 2050 even if major treatment breakthroughs should occur over the coming decades, according to a report from the University of North Carolina just released in the Annual Review of Public Health.

Type 1 diabetes safely arrested with short-term use of new drug
Researchers at Columbia University and the University of California, San Francisco have halted the course of early stage Type 1 diabetes for a year by treating patients for just two weeks with a new immune-suppressive drug, which only had minor side effects.

Peptide promotes new growth in injured spinal cords
Yale researchers have developed a synthetic peptide that promotes new nerve fiber growth in the damaged spinal cords of laboratory rats and allows them to walk better.

NASA Materials Science Conference features space research, materials for exploration and biomedicine
Scientists will gather in Huntsville, Ala., next month to discuss hot topics in their field -- from materials for advanced spaceships to biomaterials used in medicine.

Physics tip sheet #15 - May 29, 2002
Highlights of this issue include a calculation of the computational capacity of the universe, a model of ozone depletion, patterns in food web structures and a consistency check on cosmological data and models.

Monster Wimpzilla attack
There's an army of monsters out there in our Galaxy, and they could be headed for Earth.

NASA spacecraft provides critical link in Sun-Earth chain
NASA's TIMED spacecraft recently observed our atmosphere's response to a series of strong solar storms, providing important information on the final link in the Sun-Earth Connection chain of physical processes.

NSF invites media to report on U.S.-sponsored Antarctic research (2002-2003 season)
The National Science Foundation (NSF), manager of the U.S. Antarctic Program (USAP), is accepting written applications from professional journalists to visit Antarctica during the 2002-2003 research season (early November through mid-January).

What big-city women really want: Men with money
Women in high cost-of-living cities and birds in crowded habitats want the same things, according to a Cornell biologist's reading of lonely-hearts ads.

NEMO submerged in virus-prone boys
Natural killer (NK) cells provide an important line of host defense, acting both with and without help from the clonal immune system to destroy virally infected and malignantly transformed host cells.

Internal documents reveal tobacco industry surveillance of public health groups
The tobacco industry engaged in aggressive intelligence gathering to combat tobacco control groups -- including the use of intermediaries to obtain materials under false pretenses, sending public relations spies to public health organization meetings, and covertly taping strategy sessions, according to an analysis of internal tobacco industry documents by Ruth E.

Prostate cancer is costly for Californians, according to UCSF researchers
Prostate cancer, which largely afflicts older men, is costly for Californians, accounting for more than $180 million in direct health care costs in 1998 and an additional $180 million in lost productivity resulting from premature death.

Decline of world's glaciers expected to have global impacts over this century
The great majority of the world's glaciers appear to be declining at rates equal to or greater than long-established trends, according to early results from a joint NASA and United States Geological Survey (USGS) project designed to provide a global assessment of glaciers.

Students in racially diverse schools more likely to form segregated friendships, study finds
A racially diverse student body in American high schools may not lead to more friendships between students of different races, according to a new national study.

Chemical society convenes regional meeting in Fairfax, Virginia
More than 200 research papers are scheduled for presentation at the 35th Middle Atlantic regional meeting of the American Chemical Society, the world's largest scientific society, in Fairfax, Va., May 28-30.

Applied Biosystems introduces new system for protein and metabolite analysis
Applied Biosystems (NYSE:ABI), an Applera Corporation business, and its partner MDS SCIEX, introduced a high performance mass spectrometer (MS) for use in both proteomics and early stage small molecule drug development.

Ames Lab scientists say small effects are key to how materials evolve
Ames Lab researchers are learning more about how materials evolve by studying the small variations that exist at the liquid-solid interface when a metal is solidifying. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to