Stereo Binocular Microscope
All about Stereo Binocular Microscope
Stereo Binocular Microscope Resources
Computer scientist aims for a better-networked military
Computer scientist aims for a better-networked military
Computer scientist aims for a better-networked military
 |
 |
 |
(Washington University in St. Louis) Patrick Crowley, Ph.D., assistant professor of computer science at Washington University in St. Louis, has received a one-year, $499,765 grant from the Defense Advanced Research Projects Agency for research titled "Revolutionizing Defense Communications with a Diversified Internet Infrastructure."This award is the second phase of his participation in the DARPA Computer Science Study Group. Each year, an elite group of 12 pre-tenure academics in computer science and related areas are chosen to participate.
Click Here to read the entire article...
Click Here to read the entire article...
Other Articles:
| • | Isolation, Characterization and Growth Response of Pesticides Degrading Bacteria |
| In Pakistan, insecticides are widely used in agriculture. Despite their biodegradable nature, some are highly toxic and their residues are found in the environment. Moreover, its removal from wastewater generated during manufacture becomes inevitable. Reports on the mineralization of a spectrum of different insecticides by a single potential strain are scarce. In this study, a bacterial strain was isolated from soil using enrichment technique and identified as Pseudomonas sp. by microscopic examination and biochemical tests. Growth curve experiments showed that Pseudomonas strain was able to grow in nutrient medium containing malathion (35-220 mg L-1), methamidophos (80-320 mg L-1), cartap (60-120 mg L-1) and cypermethrin (40-125 mg L-1) pesticide. However, the optimum concentration which support normal bacterial growth during 24 h was found to be 120 mg L-1 malathion, 160 mg L-1 methamidophos, 80 mg L-1 cartap and 60 mg L-1cypermethrin. When compared with the control test, a significant increased in bacterial population was noted at low concentration of each pesticide, however at high concentration lag phase increased but no zone of inhibition observed. These data indicate that the isolated Pseudomonas strain can be used as a microorganism for the bioremediation of pesticide contaminated soil or water. | |
| Click Here to read the entire article... |
|
| • | The velocity of the arterial pulse wave: a viscous-fluid shock wave in an elastic tube |
| Background: The arterial pulse is a viscous-fluid shock wave that is initiated by blood ejected from the heart. This wave travels away from the heart at a speed termed the pulse wave velocity (PWV). The PWV increases during the course of a number of diseases, and this increase is often attributed to arterial stiffness. As the pulse wave approaches a point in an artery, the pressure rises as does the pressure gradient. This pressure gradient increases the rate of blood flow ahead of the wave. The rate of blood flow ahead of the wave decreases with distance because the pressure gradient also decreases with distance ahead of the wave. Consequently, the amount of blood per unit length in a segment of an artery increases ahead of the wave, and this increase stretches the wall of the artery. As a result, the tension in the wall increases, and this results in an increase in the pressure of blood in the artery. Methods: An expression for the PWV is derived from an equation describing the flow-pressure coupling (FPC) for a pulse wave in an incompressible, viscous fluid in an elastic tube. The initial increase in force of the fluid in the tube is described by an increasing exponential function of time. The relationship between force gradient and fluid flow is approximated by an expression known to hold for a rigid tube. Results: For large arteries, the PWV derived by this method agrees with the Korteweg-Moens equation for the PWV in a non-viscous fluid. For small arteries, the PWV is approximately proportional to the Korteweg-Moens velocity divided by the radius of the artery. The PWV in small arteries is also predicted to increase when the specific rate of increase in pressure as a function of time decreases. This rate decreases with increasing myocardial ischemia, suggesting an explanation for the observation that an increase in the PWV is a predictor of future myocardial infarction. The derivation of the equation for the PWV that has been used for more than fifty years is analyzed and shown to yield predictions that do not appear to be correct. Conclusions: Contrary to the theory used for more than fifty years to predict the PWV, it speeds up as arteries become smaller and smaller. Furthermore, an increase in the PWV in small arteries may in some cases be due to decreasing force of myocardial contraction rather than arterial stiffness. | |
| Click Here to read the entire article... |
|
| • | Queen's University Belfast: Research Fellow |
| Research Fellow, Queen's University Belfast, Belfast, United Kingdom. Posted on 25 July 2007. | |
| Click Here to read the entire article... |
|
| • | [LETTERS] Reply: |
| Click Here to read the entire article... |
|
| • | digitalfotoclub.com - Compare digital cameras at Digital Foto Club - Home and portable electronics, appliances, housewares and more |
| accessory starter kits, air conditioners, barbecue grill, barbeque grills, big screen tv, birding binoculars, camcorder battery, camera battery, camera lens, canon camera, canon powershot, digital camcorders, digital cameras, digital photo display, electric razors, electric shavers, espresso machines, espresso makers, fuji finepix, fujifilm finepix, gas grill, gps receivers, gps units, home theater, hunting optics, kitchen appliances, lcd tv, nikon cameras, nikon coolpix, olympus stylus, pentax cameras, portable air conditioner, stereo equipment, video battery | |
| Click Here to read the entire article... |
|
| • | Stereo Microscope |
| Stereoscopic Microscopes and Coins A Useful Tool or a Fun Toy. A recurring theme of the pages that make up this site is the desirability of looking closely at our coins. | |
| Click Here to read the entire article... |
|
EurekAlert! - Policy and Ethics
By editor@weddingssitereviews.com - Copyright 2008 by the American Association for the Advancement of Science - version: v1.5 build A
By editor@weddingssitereviews.com - Copyright 2008 by the American Association for the Advancement of Science - version: v1.5 build A