Science picksleads, feeds and story seeds (November 2002)
... to sequester more than the 100 million metric ton emission reduction goal established for the United States for 2012 by President Bush. Gail Wendt ( gwendt@usgs.gov ) 703-648-4460. What Lies BeneathCrater Lake --Back in 1886, a USGS scientist named Clarence Dutton led the first expedition to determine th...Oregon power companies offset carbon through investment in Ecuadors rainforest
...eforestation accounts for 20 percent of the annual emission of greenhouse gases. Currently, less than one percent of Ecuador's coastal rainforest remains intact due to the effects of deforestation from population growth, the doubling of farms and the planting of tall grasses which prevent native trees from b...Molecular imaging: diagnosing diseases before symptoms strike
...drugs ineffective for those individuals. Positron emission tomography (PET) is one example of molecular imaging technology already in use clinically. PET scans are used, for instance, to detect the spread of certain cancers. Patients are given a form of sugar -- glucose -- that contains a weak radioactive la...Pittsburgh researchers target genetic, environmental threats to maternal and fetal health
...cluding magnetic resonance imaging (MRI), positron emission tomography (PET) and computed tomography (CT). Through use of unique genetic markers and imaging, researchers should be able to track development at the cellular level, mapping the effects of genetic variants that jeopardize healthy fetal growth and ...New England lakes hold clues to lurking storms and floods
...says. The impact of human activity, especially the emission of atmospheric greenhouse gases, could speed up storm cycles, he says. Noren, who is lead author of the Nature paper, joined Bierman's research team as a graduate student of geology. In a laborious process Noren calls "a wintry dance," he helped to ...Physics tip sheet #29 October 23, 2002
...main reason. Also, bouncing, slipping and acoustic emission do not contribute significantly to the energy loss. The spinning coin is an example of what is called a finite-time singularity, in which an increasing amount of energy is being used in one part of an object's motion. Eventually, that motion uses up ...Biomedical scientist testing nanoparticles as early cancer detection agent
...s in magnetic resonance imaging (MRI), in positron emission tomography (PET) for in-vivo molecular imaging, or they can be used as fluorescent tracers in optical microscopy. These tags can trace specific proteins in cells for cancer diagnosis or monitor the effectiveness of drug therapy. Because the dots glo...Purdue veterinarian studies compulsive behavior in dogs
...ompulsive disorder. In the human disease, positron emission tomography, known as PET, is used to diagnose and evaluate neurophysiological brain changes. The images can show which part of the brain is active. Luescher said some breeds are predisposed to certain compulsive disorder behaviors. German shepherds a...18F-FDG PET predicts lymphoma treatment outcome
...y than after completion. PET stands for positron emission tomography. Because of its unique ability to measure metabolic activityor the efficiency of the cells converting food to energy--PET provides accurate, noninvasive detection and staging of many cancers. A radiopharmaceutical, such as 18F-FDG (fluoro...Energy Department awards $103 million for post-genomic research
...ion, chemical synthesis and degradation, and light emission and detection. A goal of the Genomes to Life program is to understand these molecular machines and their controls so well that they can be used and even redesigned to address national needs. The program is also expected to lead to an understanding o...UCLA scientists develop prostate cancer tracking system
...rs are working on such a system now using positron emission tomography, or PET scanning. In January 2001, the National Cancer Institute awarded Jonsson Cancer Center researchers a $9.8 million grant, under the leadership of Herschman, to establish a new molecular imaging center that will develop innovative wa...Researchers arming farms to halt increases in greenhouse gases
...MGS, as much as 20 percent of the projected carbon emission reduction called for by the Kyoto Protocol could be accomplished by using U.S. farmland. Ronald Turco, professor of agronomy and director of the CASMGS program at Purdue, said that such a decrease would be enough to offset the United States' annual c...Study finds genetic aberrations linked to lung cancer; Could help in early diagnosis
... an early stage of their illness - throughpositron emission tomography (PET) or other imaging techniques. Equipped with a profile of genetic aberrations that are linked toearly tumor growth, it would be possible to distinguish potentiallydangerous nodules in a patient's lung from the benign ones. "If youknow ...Soil's love affair with carbon viewed with millimeter resolution
...k of trading carbon stored in land in exchange for emission "credits" occurs with increasing frequency in international treaty negotiations. Some private companies have even begun work on establishing a monetary value for traded stored-carbon credits.......n-obese individuals. The researchers used positron emission tomography (PET), a brain-scanning technique, to measure dopamine levels in 10 food-deprived volunteers. Each volunteer was given an injection containing a radiotracer, a radioactive chemical "tag" designed to bind to dopamine receptors in the brain....New evidence for organic compounds in deep space
...e almost empty interstellar space, bright infrared emission is observed, the spectrum of which has become commonly known as the Unidentified Infrared Bands. The most widely accepted hypothesis is that complex organic compounds cause the bands. Put more precisely it is thought to be a mixture of various polyar......bsequent stimulating (red) light pulse (Stimulated emission deletion, STED). The de-exciting pulse is aligned around the excitation focus in a ring structure, so that the molecules in the center of the ring are excluded from de-excitation and the remaining fluorescence light emits from a much sharper focus. W...Portable unit created to treat wastewater in remote locations
...uld have required too large a unit and complicated emission controls to burn the filters. Instead, Virginia Tech and UTD developed stainless steel screens and pressure filters for solids removal. These will be used in conjunction with biological treatment units where bacteria are used to degrade the waste usi...Most definitive study yet shows tiny particles in air are linked to lung cancer
...ency is now considering new rules for limiting the emission of the particles. The EPA set annual average limits on fine particular matter to 15 micrograms per cubic meter in 1997. However, many cities presently exceed that standard. According to the study, from 1979 to 1983, the annual average was 24 ug......ubble implosion. The researchers also observed the emission of neutrons with energy close to 2.5 million elect...uterated (normal) acetone, and observed no neutron emission or tritium production in these experiments. Currently, the level of neutron emissions with the chara...