Scientists get first glimpse at how plants, most animals repair UV-damaged DNA
...evealed how the enzyme photolyase uses energy from visible light to repair UV damage. This enzyme is missing ...nce of what scientists have long suspected -- that visible light excites the photolyase molecule and boosts the energy of electrons in its atoms. This in turn ...Method slashes quantum dot costs by 80 percent
...f ultraviolet light and re-emit them as photons of visible light. They glow different colors, depending on the size, shifting from the red to the blue end of the spectrum as the crystals get smaller. The reproducible synthesis of high-quality quantum dots became a reality in the early 1990s when researchers...Gold bowties may shed light on molecules and other nano-sized objects
...gth of light." Because the shortest wavelength of visible light is 400 nanometers, a conventional microscope cannot resolve objects 200 nanometers or smaller. "But the bowtie antenna produces an optical spot that's 20-nanometers wide, so we're improving the resolution by a factor of 10," Kino says. Polyme...Cancer therapies during childhood can damage developing teeth
...ldren in the study. Some of them had minor changes visible in a few teeth only, while others had severe damage in all their teeth. Total body irradiation increased the number of damaged roots. The children who had only received high-dose anticancer chemotherapy had root damage in over half of their teeth, bu...Virginia Tech group adds tools to DNA-targeted anti-cancer drugs
.... The Brewer group's systems could be activated by visible light in the therapeutic range a wavelength not b...cause the therapeutic complexes only activate with visible light, the researchers are now able to add a luminescent tag that glows in the presence of ultra vio...Video analysis adds evidence for ivory-billed woodpecker
...u video, indicating that only white feathers were visible along the broad trailing edge of both the underwing and upperwing. To show the differences, the video frames were compared with blurry frames of pileated woodpeckers. Also, using models of ivory-billed woodpeckers, scenes were reenacted with an ...Illegal destruction of coral reefs worsened impact of tsunami
...ish. Some eyewitnesses to the tsunami described a visible reduction in the height of the water wall and its deflection parallel with the shore as it approached the coral reef. The researchers conclude that waves that had been blocked by the reef caused even more inundation and damage where they found low re...No trouble removing oil from water
...ffluent water, and increasingly for there to be no visible sheen on the receiving water. Although other systems can achieve low effluent oil contents, they tend to be more energy intensive and incur higher costs, particularly for ongoing maintenance, says David Tolmie, who developed EGOWS with colleague Pete...Spanish forest fire aftermath surveyed by Envisat
...y the Earth in 15 selectable spectral bands in the visible and near infra-red," explained Gonzlez-Alonso. "We...ross China. Gonzlez-Alonso explained that MERIS's visible and infra-red multispectral imaging capability combined with a better spatial resolution than compar...Scientists develop nanotech-laser treatment that kills cancer cells without harming healthy tissue
...frared light waves, which are slightly longer than visible rays of light and pass harmlessly through our cells," Dai says. But shine a beam of near-infrared light on a carbon nanotube, and the results are dramatic. Electrons in the nanotube become excited and begin releasing excess energy in the form of heat...Building a better mouse model of lung cancer: FHIT counts
...ppen later in the disease, when tumors are clearly visible and successful treatment unlikely," says Huebner. "We were interested in creating a model that reflected the timing and order of genetic and epigenetic changes in the human experience of this disease." Huebner and colleagues at Ohio State and Thomas...New taxon of Galpagos tortoise identified
... lineages that are yet to be formally named. While visible characteristics, like the shapes of their shells, were the basis for previous classification of the tortoises, this research team used a variety of molecular genetic and analytical tools including mitochondrial DNA analysis from extinct taxa. The com...Endangered North Atlantic right whale study says population in crisis
...and sink gillnets. Cuts from ship strikes are also visible on many whales....Genetic links could unlock clues to leading cause of blindness
...uch as blue light, part of the spectrum of natural visible light. Frequent exposure to blue light rays has been linked to macular degeneration. If the disease is going to be treated early, Dawson said researchers must know the significance of these factors. Aside from studying early environmental risks, the ...'Achilles' heel' of the herpes virus possibly found
...ave genital herpes and millions more have the more visible oral variety. Once someone is infected, they're infected for a lifetime. New medicines for herpes infection are badly needed; currently, antiviral drugs can quell symptoms of an outbreak, but not eliminate the virus. And, there's increasing evidence ...Don Quixote's home shows way to future Earth Observation missions
...borne Spectral Imager-3 (CASI-3) that works in the visible to near-infrared, built by Canadian firm ITRES. To provide complementary measurements into the shortwave infrared and thermal infrared a new sensor called the Airborne Hyperspectral Scanner (AHS) was flown on aircraft operated by Spain's National Ins...Tips from the journals of the American Society for Microbiology
...ria That Infects the Human Stomach Treatment with visible light may kill the bacteria that commonly cause ul...otosensitivity. When the cultures were exposed to visible broadband light, results showed both virulent and drug-resistant strains of H. pylori were killed. B...Sensory deprivation affects brain's nerve connections
...namic unfolds. The scientists were able to deliver visible evidence of the effect of sensory deprivation. It is well known that a growing child learns many skills. "What is less known," says Dr. Gan, "is that during childhood until puberty in the human brain, as well as in the monkey and mouse, you...Study in Royal Society journal on world's only horned rodent
... first time, that immune (MHC) genes are linked to visible (facial) traits and that smell and face information are integrated to choose the optimal mate. Contact: Dr S. Craig Roberts, School of Biological Sciences, University of Liverpool, Biosciences Building, LIVERPOOL, L69 7ZB, United Kingdom Migrating l...Programming organic transistors with light; the unusual origin of peacock brown; rotating nanowires
...voltage of organic transistors by exposing them to visible light, making it possible to essentially "reprogra...uminating a single-crystal organic transistor with visible light and applying a gate voltage at the same time, they can controllably vary the threshold voltage...