Endangered turtles' trek along ocean currents revealed by satellite
...eter (RA) instrument. By firing thousands of radar pulses off the surface of the sea every second extremely precise ocean height measurement is made possible. Height anomalies detected by this type of sensor are often indicators of the presence of ocean currents and eddies: warm currents can stand up to a m...UC Riverside researcher takes snapshots of the movement of molecules in a billionth of a second
...pper substrate when hit with extremely rapid laser pulses - a femtosecond is one millionth of a nanosecond - and tracks their movements. "It was possible to identify the individual site-to-site displacements of molecules undergoing ultra-fast dynamics induced by femtosecond laser pulses," Bartels said...AGU journal highlights - 29 July 2004
... report that the soundpressure from compressed-air pulses used in seismic experiments can reverberatefrom the seafloor in shallow waters, magnifying and enhancing the exposure oflow-frequency acoustic waves through the ocean ecosystem. The authors alsofound that sounds in deep regions within the Gulf of Mex...Epilepsy: Signals 'brake' in brain impaired
...icroprocessor and transmits as a result electrical pulses via a special projection, the axon, to the dendrit...leaks'; on their journey through the dendrites the pulses therefore level out more and more. 'In rats with what we call a temporal lobe epilepsy some dendrite...Ocean scientists assess impact of seismic pulses in effort to protect whales
...tigating the possible effect of underwater seismic pulses on marine mammals have conducted a series of tests...o better understand how strongly and how far sound pulses travel, both in shallow and deep water. The Maurice Ewing cruise was a step in that direction. Using...Climate may play role in lynx's hunting ability
...o seeing." This cycle forms one of the fundamental pulses in the boreal forest ecosystem. The hare is the prime herbivore in the system and if it were to disappear, it would have major implications to other species like predators and the structure of the plant community would be altered substantially, sai...Microscopy scans show how brain cells process energy
...The procedure begins when extremely short, intense pulses of laser light are directed at cells below the surface. The rapid-fire nature of multiphoton microscopy increases the probability that two or three photons will interact with individual biological molecules at the same time, combining their energies....Carnegie Mellon U. imaging study reveals sex-based differences that persist as mice enter adulthood
...toms when they are exposed to a magnetic field and pulses of radio waves. MRM uses stronger magnets to capture images at a resolution 10-100 times finer than conventional MRI. Using MRM, Ahrens and his colleagues imaged the brains of male and female mice, aged 1 month (adolescent) and 3 months (adult). Kos...New study confirms process leading to disorder causing male characteristics in women
... contrasts with acute P responses to endogenous LH pulses during the luteal phase. Conclusions The authors conclude that that near-physiological ovarian stimulation via intermittent (pulse-like) rhLH administration produces exaggerated 17-hydroxyprogesterone secretion in patients with PCOS, supporting ear...Strengthening independent junior research groups in collaborative research centres
...he Friedrich Wilhelms University, Bonn) The pulses of new lasers only last for attoseconds, a quintillionth of a second, but produce an energy output of several petawatts, i.e., quadrillions of watts. They thus create energy densities greater than those in the interior of the sun. Scientists at the T...3-D micro-imaging technology licensed to Carl Zeiss Jena
...The procedure begins when extremely short, intense pulses of laser light are directed at cells below the surface. The rapid-fire nature of multiphoton microscopy increases the probability that two or three photons will interact with individual biological molecules at the same time, combining their energies....High Flux Isotope Reactor marks 400th cycle
...eams of neutrons, the SNS will produce neutrons in pulses from an accelerated beam striking a target. HFIR and SNS will be equipped with a suite of state of the art instruments for neutron scattering experiments. Neutron scattering is a powerful tool for determining the structure and properties of materials...Are you slow in coordinating your thoughts?
...nerve cells in the brain communicate by exchanging pulses via synaptic connections. Unlike atoms in a crystal which are arranged on a regular, e.g cubic lattice, nerve cells in the brain grow synaptic connections in a highly specific but irregular fashion. In such systems, a particular question is how rapid...Envisat concludes a busy second year in orbit
...timetry-2 (RA-2), which bounces thousands of radar pulses each second off the sea surface in order to detect ocean eddies and currents. "Our model for forecasting has a maximum five km mesh size, which is demanding in terms of computing power, but which we need to resolve surface features like major curren...DFG establishes 14 new research units
...n is based on optical data networks in which light pulses are transmitted along glass fibres. Diverse proble...sociated with this process. For example, the light pulses change their modal structure and fan out to the side. The newly established Research Unit at the Uni...Optically recording millisecond brain nerve impulses
...of living animals, and secondly, the intense laser pulses can cause phototoxic damage." These obstacles were overcome by using a less-toxic dye, a longer illumination wavelength and by limiting the duration and intensity of the laser pulses. "Also, we conducted the first demonstration of this technique in a...Lasers create new possibilities for biological technology
...a femtosecond laser - a laser that generates light pulses with durations as short as 100 trillionth of a second - through a gas-filled tube called a waveguide, they were able to create more efficient "laser-like" beams in regions of the spectrum that were previously inaccessible. The wavelength region ove...Could a specific protein contribute to erectile dysfunction for the diabetic and obese?
...e MPG ranged from 1 to 6 volts delivered in 5 msec pulses at a frequency of 12 Hz. The duration of stimulation was 1 minute with rest periods of 5 minutes between subsequent stimulations. Isolated Cavernosal Tissue Force Measurements: Cavernosal strips were bathed in a physiological salt solution and ga......0 km-high polar orbit it sends 1800 separate radar pulses down to Earth per second then records how long their echoes take to return timing their journey down to under a nanosecond to calculate the exact distance to the planet below. Radar altimeters were first flown in space back in the 1970s, aboard NAS......illionth of a sec) in world record quantities. The pulses are short enough to interact with molecular bonds ...ials research and chemical synthesis. These short pulses also give chemists the potential to dial in specific chemical reactions allowing for much more effic...