Born under the sun: UV light and the origin of life
... Under high levels of UV, RNA molecules were more stable than other large molecules and the small molecules that join together to create the RNA. This gave RNA molecules a selective advantage, so that their levels then increased through the simulated process of natural selection. Moreover, part of the en...Novel flu vaccine shows promise in mice
...star Institute. "A vaccine directed against a more stable region of the virus would offer important public-health advantages, and this is what we are hoping to be able to develop." Current flu vaccines trigger an immune response to a pair of prominent viral-coat proteins that mutate constantly, which is the...Older pilots OK to fly, study shows
...r million pilot flight hours. Crash risk remained stable as the pilots aged from their late 40s to late 50s. One hundred and five study subjects died, 27 of whom were fatally injured in aviation crashes. "Federal aviation regulations prohibit airline pilots from flying beyond the age of 60, but the relati...Diversity hot spots at cold seeps?
...ate fauna. Because seeps are considered to be more stable and less toxic than vents, ecologists expected that diversity would be greater at seeps than at vents, but this hypothesis remained untested until now. In the most recent issue of Ecology Letters, researchers at the College of William and Mary report...Math discovery may aid resource management
...and food webs among different species evolved into stable systems that worked well together, said Hiram Li, an OSU professor of fisheries and wildlife. But Robert May came along with a mathematical theory that suggested that increased complexity in a natural system should actually make it less stable, Li sa...Diabetes therapies and liquid memory may develop from micro fluid research, Science researchers say
...cks into formation. The flow is now in one the two stable "states." The fluid will maintain this pattern of ...nge in pressure bumps the polymers to their second stable state. In this way, the polymer flow remembers where the last pressure kick directed its path. The p...UCR scientists modify existing chemical scrubber to environmentally friendly, all-natural filter
...e converted scrubber for more than 8 months showed stable performances and robust behavior for hydrogen sulfide treatment, with pollutant removal performance comparable to that achieved using a chemical scrubber," said Deshusses. "Our study demonstrates that biotrickling filters can replace chemical scrubbe...Gametes and embryos from mammalian stem cells: religious and ethics perspectives
...eased into developing into oocytes and then into a stable pre-implantation embryo. What follows? With respect to the moral standing of such an embryo, several realities much be faced clearly. First, if one's position is that mammalian life begins with fertilization or conception, that position can no long...Researchers discover structure of Nature's 'circuit breaker'
...um, Aeropyrum pernix , that proved more rigid and stable when isolated. They also developed a technique of attaching monoclonal antibodies to the "floppy" portions of the protein, to create attachment points for crystallization of the proteins. The first x-ray structures using the crystals revealed a star...Study finds two-thirds of unplanned pregnancies in women using contraception
...men, yet it was highly satisfactory for those with stable partners who are not exposed to the risk of sexually transmitted infections, regardless of the number of children they had. Similarly, depending on the relationships within a couple, the use of condoms and withdrawal methods may be problematic. "Ther...Genetic blueprint for Q fever bacterium unveiled
...cently. The Q fever genome also appears to be less stable than the genomes of these pathogens. NIAID recently published its roadmap for biodefense research priorities on category B and C pathogens, including C. burnetii (see http://biodefense.niaid.nih.gov/biodefense/research/strat_plan.htm .) Currently...Q Fever microbe's genome is deciphered
... multiple mobile elements of DNA seems to be less stable than that of other obligate intracellular pathogens such as Rickettsia and Chlamydia. The evidence of mobile elements and gene degradation suggests greater genome flux. The study was led by TIGR researchers in collaboration with other scientists, in...R&D yields numerous applications for conductive polymers
...g these materials have centered around making them stable so that they have long operating life times," states Technical Insights Analyst Joe Constance. Devices incorporating conducting polymers require a balance of conductivity, processability, and stability and recent research has been able to optimize al...The structure behind the switch
...e of USC has, for the first time, described a new, stable DNA structure in both mouse and human cells-one which differs from the standard Watson-and-Crick double helix and plays a critical role in the production of antibodies, or immunoglobulins. The research will be published online in the journal Nature I...Significant pain reduction for post-shingles patients
... on the first day after the procedure and remained stable throughout the four-week observation period.As a purely local treatment without the potential for systemic side effects, high-concentration capsaicin patches could be a very effective and safe treatment alternative for patients suffering from posther...Free-radical model too radical
...t-butoxyl radical which is easily produced from a stable and safe source, as a model. The t-butoxyl radical was then subjected to various tests within organic solutions to observe its behavior and characteristics. "It seemed like a good approximation of a 'generic' oxygen-centered radical," says Tanko. Ev...Carnegie Mellon scientists create unique DNA probe with great potential
...esulting PNA-DNA hybrid duplexes are actually more stable than a duplex consisting of two complementary DNA ...itute for a DNA strand, potentially forming a more stable quadruplex. This turned out to be the case," explains Armitage. In the experiments carried out in A...Diamond in the rough...and on the chip
...andary has been to build such a detector small and stable enough, that could be used more than once, and tha...ry at UW-Madison. "And the hardest part getting a stable platform for a chip that can be used for continuous monitoring, not just one-shot analysis is over....Crows alter their thieving behavior when dealing with kin or other birds
...complex social groups. "They tend to associate in stable groups that contain some of the same birds all of the time. But these groups are not kinship groups and the members are not all necessarily related to each other. They will try to steal food from familiar birds, kin or strangers," he said. "This b......eta-galactosidase, and the lacZ gene is apparently stable from generation to generation. Petitte says that other transgenic chickens have carried the lacZ gene, but that this is the first time that a transgenic chicken line that expresses beta-galactosidase has been developed. "This is a really powerful res...