World's first X-ray free electron laser is on course to completion
...n Source and other light-source facilities. The pulses of X-ray laser light from LCLS, a fourth-generation light-source, will be shorter and a billion times brighter than can be produced by any other X-ray source available now or in the near future. These advanced characteristics will aid scientists i...Electric fish conduct electric duets in aquatic courtship
...chniques for separating and documenting electrical pulses based on sex. They video recorded four pair of mating mormyrids (a feat in itself, since the species rarely breeds successfully in captivity) and identified nine common motor displays and 11 specific pulse sequences common to courtship and mating. ...News tips from the Journal of Neuroscience
...e presented with unpredictably timed neutral sound pulses showed greater c-Fos expression in the basolateral...t amygdalar responses to unpredictably timed sound pulses compared with predictable ones. When these subjects were presented with threatening stimuli, in the ...Catching cancer's spread by watching hemoglobin
...at different wavelengths (colors) send ultra-short pulses (lasting only a femtosecond, or a quadrillionth of a second) on a blood vessel. The hemoglobin absorbs light from both of these lasers at the same time, in a process known as "two-photon absorption," and then gives off signals that can be detected to...Satellites shed light on global warming
...meters work by sending thousands of separate radar pulses down to Earth per second then recording how long their echoes take to bounce back to the satellite platform. The sensor times its pulses' journey down to under a nanosecond to calculate the distance to the planet below to a maximum accuracy of two ce...Quantum secrets of photosynthesis revealed
...es sequentially flashing a sample with femtosecond pulses of light from three laser beams. A fourth beam is ...ndwidths of energy using different colors of light pulses to map out everything that is going on, not just energy transfer. Ultimately, the idea is to gain a ...New way to catch cancer's spread, rapid 3-D retinal imaging, more at CLEO/QELS 2007
...t technique will allow them to create even shorter pulses well below 100 attoseconds. These isolated attosecond pulses promise to probe electron phenomena such as "wavepackets"specially tailored electron waves inside at......, which involves subjecting the patient to intense pulses of light, has been shown as another effective treatment for various forms of depression. "The indication that GSK-3 is at the same time a mediator of light effect and a clock molecule in Drosophila raises interesting prospects for understanding the...A 'traffic light' for neurons means 'go' for improving brain research
... Combined, the two genes can now make neurons obey pulses of light like drivers obey a traffic signal: Blue ... genetically altered motor neurons were exposed to pulses of yellow light focused through a microscope. In some experiments, exposure to blue light caused the...MIT: Pulsing light silences overactive neurons
...nted a way to reversibly silence brain cells using pulses of yellow light, offering the prospect of controlling the haywire neuron activity that occurs in diseases such as epilepsy and Parkinson's disease. Such diseases often must be treated by removing neurons that fire incorrectly. The new MIT research ...Climate changes, Cod collapse have altered North Atlantic ecosystems
...Since the late 1980s, scientists have noticed that pulses of fresh water from increased precipitation and melting of ice on land and sea in the Arctic have flowed into the North Atlantic Ocean and made the water less salty. At the same time, climate-driven shifts in Arctic wind patterns have redirected oce......"firing" of nerve cells, when they send electrical pulses - like a Morse code - to other cells of the brain. This process depends on the exact dynamics of the neuronal activity. When the brain receives sensory input, calculates or remembers, it processes information encoded in a series of neuronal impulses ...A simple feedback resistor switch keeps latent HIV from awakening
...ral concentration. According to the authors, these pulses of viral activation may be due either to random increases of Tat activity or to environmental inhibitors of the SirT1 enzyme, such as dihydrocoumarin, a natural flavoring agent found in clover....American Chemical Society's Weekly PressPac -- December 6, 2006
... "These tests show that broadband incoherent light pulses can be effective in removal of lead paint from architectural materials," the researchers report. With the concept for the new stripper proven on small samples of paint, they plan to move on to more extensive studies of the technology. ARTICLE #2 F...Extreme life, marine style highlights 2006 ocean census
...ter, their chemistry allows them to withstand heat pulses that approach the boiling point up to 80C. Shrimp were seen on the walls of the vent chimney. Others in the habitat include mussels and clams. All somehow tolerate an environment of extreme temperature changes within a few centimeters and high co...The power of one: A simpler, cheaper method for cell fusion
...along an electrical field before zapping them with pulses of electricity. Lu's technology is more precise. "In my device, the narrow section in the microfluidic channel is so small that only two to three cells fit into it," Lu said. Lu said he believes that his device may be developed to have a higher t...Edge density key to controlling gypsy moth spread
...pulsed expansion occur, but it mimics the historic pulses of the gypsy moth population from 1960 to 2002 found in the quarantine records. Currently, the containment program for gypsy moths aims at controlling outbreaks outside the current population boundaries. The researchers suggest that "the invasion mig...News tips from the Journal of Neuroscience
...gions by measuring responses to painful electrical pulses with functional magnetic resonance imaging. The participants either thought that they could stop the painful stimuli at will or that another person or a computer held control. Participants were also asked to rate the intensity of the pain they experi......eveloped a new quantum technology which uses laser pulses to control quantum processes. The method, which is described in the October 13th web release by the world's leading scientific journal, Science, was illustrated by changing the outcome a chemical reaction. Quantum technologies make use of the molec...