Chemical used in marine paint may damage hearing in whales
... negative affect on cochlear amplification. "This observation identifies a new environmental threat for marine mammals by TBT, which is known to accumulate in the food chain," Santos-Sacchi said. "It also is now important to assess the impact of TBT exposure on marine mammal communication."...UCLA researchers detail the evolution of quantum dot imaging in the journal Science
...high-resolution cellular imaging and the long-term observation of individual molecules and their movement within cells, according to a UCLA-led team of chemistry and biochemistry researchers that includes scientists from Stanford University. The researchers assess this emerging field and highlight two recent adv...Wider use of simpler cervical cancer screening could benefit women in developing countries
...nute. Then, the health worker performs a naked-eye observation of the cervix to see whether the epithelium, a protective tissue layer, turns white. This would indicate precancerous lesions. Dr. Jeronimo said that "it has always been said that this VIA method was only applicable" in low-income developing nations...Physics team puts new twist on spin hall effect
...ysics Today along with an independent and parallel observation of the effect in conventional bulk semiconductors. Team members say the more than 10 times larger signal detected in the Hitachi device can be attributed to the special layered design of the semiconductor chip that yielded operation in a regime close...Falling ants glide back to trunk to avoid dangers of forest floor
...nd drop those to see what they do." "Steve's first observation may be leading to a whole Pandora's Box of gliding arthropods," added Kaspari. "Steve, Robert and I right now are exploring how pervasive such directed descent might be we are, in fact, finding it in a variety of wingless arthropods that glide in us...New system can measure productivity of oceans
...the old standard for monitoring phytoplankton, the observation of chlorophyll."The growth rate of phytoplankton can change dramatically based on such factors as water temperature, nutrients and light," Behrenfeld said. "And it's the growth rate of phytoplankton we have to know, to really take the pulse of the oc...Amgen's decision to block reinstatement of GDNF is faulted by a leading Parkinson's advocacy group
...y and efficacy of the treatment. Furthermore, the observation of increased fluorodopa uptake in PET scans needs to be carefully followed over time to determine if this will eventually translate into clinical improvement. Giving up this opportunity to learn is, in our view, a mistake." "In good faith, the 48 pa......d by the limitations of their recording and visual observation abilities. Suddenly you realize that the whales sense of scale is ocean basin sized one song note is 20 miles long and can illuminate the entire basin, he says. Clark has observed that the distribution of singers is closely matched to the distributi...Technological revolutions in sensors, robotics, and telecommunications allow new views of ocean
... years, but populations are now dwindling. Direct observation on the sea floor is the only way to discern links among corals, rockfish, and other deep sea creatures information critical to developing effective protection measures. "It's a different experience," explains Yoklavich. "You're in the medium, in t...2005's highest engineering honors awarded
...d operation of Corona, the first space-based earth observation system." LELAND C. CLARK JR. will receive the Fritz J. and Dolores H. Russ Prize -- a $500,000 biennial award that recognizes bioengineering achievement that significantly improves the human condition -- "for bioengineering membrane-based sensors t...Scientists discover that three overlapping signals in embryo help get the backbone right
...ifornia, Berkeley, finally explains an 80-year-old observation that revolutionized the way biologists think about... set the stage for the stem cell debate. That 1924 observation in newts by Hans Spemann and Hilde Mangold earned Spemann the Nobel Prize in 1935 and generated the ...Scientists identify new model Of NK cell development
...mph nodes, too." Freud also makes the provocative observation that lymph nodes, while full of CD56 bright cells, are significantly lacking in their counterparts, the CD56 dim cells. "Our next goal is to determine if there is some developmental continuum at work here, supporting the notion that CD56 bright cells...UF science discovery raises questions about origin of African mammals
...all-bodied, hopping mammal, is consistent with the observation that other mammals, including primates, also moved around the world during the course of their history, Bloch said. "It is at least possible that primates, like primitive elephant shrews, evolved in North America and spread from there into Europe, A...Autism linked to mirror neuron dysfunction
...ought to be involved not only in the execution and observation of movement, but also in higher cognitive processes language, for instance, or being able to imitate and learn from others' actions, or decode their intentions and empathize with their pain. Because autism is characterized, in part, by deficits in ...New findings about protection against pneumococcal disease
...e natural mechanism of protection. "An interesting observation is that HIV-infected children, whose CD4+ cells are depleted by the virus, are at about a 200-fold higher risk for pneumococcal disease," Malley adds. "Our experiments in mice may provide an explanation for that vulnerability." The whole-cell vaccine...Forsyth scientists find blue light fights gum disease culprits
... Soukos said. The current research stemmed from an observation by Max Goodson DDS, PhD, Director of Clinical Research at Forsyth, that the blue light used in a tooth whitening procedure appeared to decrease inflammation of the gums. The team is currently developing a hand-held, light-based device that might, on...Viagra shows selective effects in hypertensive pregnancy on mother, fetus
...whose weights were reduced by more than 20%. "This observation also supports an effect on uterine blood flow since it well known that restriction of uterine blood flow during pregnancy is associated with reduced fetal weight, which is a serious clinical problem," Osol added. 3. "Third, and most surprisingly, Via...Radar tracking reveals that butterflies follow decisive flight paths
...up to 1km away. Previous studies had to use visual observation (difficult over 50m) or indirect mark-recapture techniques. Butterflies were tracked undertaking fast, directed flights to potential feeding sites or interspersing periods of foraging with looping "orientation" flights. Knowing how butterflies navi...Fibril shape is the basis of prion strains and cross-species prion infection
...ilities. With the help of atomic-level microscopic observation of prions in humans, mice, and hamsters, Jones and Surewicz discovered that it is the specific shape of the amyloid fibrils, and not the amino acid sequences, that may allow prions from one species to infect another. In a second Cell study, Jonathan ...Mouse with designer liver has enhanced glucose tolerance and improved insulin response
...anism for control of liver insulin signaling. Our observation might be instrumental for understanding better the pathogenesis of type II diabetes and designing anti-diabetes drugs." Co-authors on this study from Dr. Feng's laboratory were Emilie Bard-Chapeau, Ph.D., and Shinong Long, Ph.D., postdoctoral fellows...