Researchers tracking sources of arsenic contamination in water
...rface between the two zones? The goal is to figure out how to prevent arsenic from getting into drinking water sources, she said. "We are trying to determine the biogeochemical controls on arsenic release. In this case, release was accelerated through human activity (mining). But we are also looking at h...Researchers unlock mysteries of toxic metals in the largest contaminated site in United States
...d a real case in nature." The next step is to find out what the presence of manganese does to the bioavailability of the toxic minerals, he said. Virginia Tech will be purchasing a new TEM soon for this and other research that requires extremely high magnification. Pyrite, which is plentiful throughout...Hurricane Ivan helps student study sinkholes
...caverns and fissures, the contaminants are flushed out of the depressions and into the aquifer. Schwartz ...change in water movement under a sinkhole. "I went out before the hurricane and ran two transects (measurements from lines of electrodes) as a control. I l...Antibiotic-resistant bacteria increased after clindamycin use for common vaginal infection
... standard BV treatment. "I think any time you find out that use of an antibiotic results in a huge antibiotic resistance, it's important," she said. Treatment decisions, however, remain the province of individual physicians and patients, Dr. Hillier added. In addition to Drs. Beigi and Hillier, other st...JCI table of contents November 1, 2004
...es. Furthermore, the researchers showed that the 4 out of 9 individuals with low HDL specifically carry 1...he arguments defined by Landry and Zucker are laid out with historical background both on the history of organ donation and in vitro fertilization. The co...Mutations in transporter protein effect HDL levels in the general population
...es. Furthermore, the researchers showed that the 4 out of 9 individuals with low HDL specifically carry 1 of the 2 mutations identified in families with Tangier disease. These data provide insight into the genetic changes that can contribute to variation of HDL in the general population and add to our cu...Stem Cells: Saving Lives or Crossing Lines?
...ists wait for the public and policy-makers to sort out the controversies and ethical dilemmas surrounding human embryonic stem cell research, the United States could for the first time in modern history lose its leadership role in biomedical research," said Neal Lane, university professor at Rice and s...Scientists raise concerns about second wave of 'mad cow' prion infection
...tive approach is to be proactive and keep microbes out of the blood in the first place," she concluded. S...eduction of risk of vCJD transmission. He pointed out that although leukocyte reduction is valuable, and explained the importance of 100 percent implement...Research team discovers possible genetic mechanism behind congenital heart defects
...affecting children, occurring in approximately one out of 100 live births in Canada. The next steps for this research involve examining patients with congenital heart defects to see if they, like the mouse model, have this modified protein. Other members of the research team include the study's co-lead a...International Rice Functional Genomics meeting in Tucson Nov. 15-17
...d to discuss how to tackle the next step: figuring out what all those rice genes do. Right now researchers know the function of only about 500 rice genes-- just 1 percent of the rice genome. Learning how the genes act inside the plant is crucial for developing better varieties of rice. Wing estimates tha...U-M researcher examines the cell's housekeeping habits
...s. Cancer researchers have been trying to figure out how to turn apoptosis on as a way to have cancer c...of invading bacteria and viruses, by cleaning them out of the cell's interior without having to discard the entire cell. As a result, some pathogens try to...UNC Lineberger researchers identify molecular markers of aging
...harpless said. "As people age, they could just run out of functioning stem cells." Depletion of stem cells could affect the ability of the body to heal after injury or surgery and may also predict the ability of certain diseases, such as cardiomyopathy, to progress," he added. Along with Sharp...Tiny paddle oscillator senses the mass of a virus
...dding just a few virus particles to a paddle turns out to be enough to change its resonant frequency by about 10 kiloHertz (kHz), which is easily observable. To trap viruses, the researchers coated the paddles with antibodies specific to Autographa californica nuclear polyhedrosis virus, a nonpathogen...Scientists find acid rain an unlikely ally in the battle against a greenhouse gas
...how you look at it, something good can always come out of something bad. That's actually the case in a ne...redict how this ecological balancing act will turn out for the 21st century. "When we used all the field data with the NASA ...Powerful 'toolkit' developed for functional profiling of yeast genes
...e researchers then use special microarrays to find out how much of each mutant is present. An improved barcode microarray, designed by research associate Daniel Yuan, replaces the original in the new toolkit. "Much like barcodes identify your purchases at the grocery store, these genetic barcodes i...National Eye Institute funds search for genetic key to corneal disease
...of like a fingerprint or be a dense patch blocking out light on the front layer of cells in the cornea," Yee said. "Onset can occur as early as infancy, as late as adolescence, and is accompanied by a sharp, stabbing pain. The spots can be visually debilitating." The cornea is the curved, transparent l...Conversion of flower organs into leaves
...flower formation for ages, scientists have carried out molecular studies on flowering only during the last two decades. Numerous genes controlling flower development have been identified during this time. Many of the studies have focused on the small weed Arabidopsis thaliana, which possesses the typical...Identifying the path to infection
...he adhesive and then guides the assembled adhesive out of the cell. Li and his colleagues found that PapC consists of two main structural elements, with each part containing one opening, or pore. Each pore is approximately two nanometers (billionths of a meter) in diameter, and the entire structure is...Spatial structure, dispersal, and management of a recovering raptor population
...an--were asymmetric, with essentially no dispersal out of the interior subpopulation and a strong tendency for coastal peregrines to disperse to the urban habitats. By fitting regional population models to the observed recovery of breeding pairs in each habitat, this study also characterized the demograp......n fraction measures the percentage of blood pumped out of the left ventricle with each of the chamber's contractions. Cardiologists consider normal any reading above 55, which means 55 percent of the blood in the chamber was pumped out, Donahue said. Patients without diabetes in the study had an average ...