Acoustics meeting in San Diego
...in the arm and thigh). By directing ultrasound at simulated fractures of various widths, they found that (1) fracture size influenced the amount of ultrasound that was re-radiated from the bone beyond the fracture and (2) even small fractures dramatically reduced, or "attenuated," the amount of ultrasound t...For inferring the biological tree of life, simple is better
...lationships correctly recovered that tree from the simulated data. They found that a simple logical method know...zkowski were not convinced by these studies, which simulated evolution using a simplistic and unrealistic process in which the various parts of a gene evolve at ...UF scientist: 'Brain' in a dish acts as autopilot, living computer
...cientist has grown a living "brain" that can fly a simulated plane, giving scientists a novel way to observe ho...e it's a live computation device." To control the simulated aircraft, the neurons first receive information from the computer about flight conditions: whether t...Mail-order drugs exposed to extreme heat become less effective
...e- and postdispensation were obtained to calculate simulated drug delivery. Results showed that filter weights of heated medications were less than half of those unexposed to heat, showing that a significantly less amount of the drug had been dispensed after it had been heated. In addition, capsules exposed ...Sea change: Skeletons of ancient corals different from today's
... under special lights called "PowerCompacts" which simulated true daylight by emitting a wavelength commensurate to sunrise and sunset in the morning and evening, as well as normal sunlight during the rest of the day. Ries fed the growing corals with plankton particles, and monitored each tank's pH level -- ...Acetaminophen shows positive in vivo cardioprotective effects in heart attack, arrhythmia
..., specifically by measuring the infarct size" in a simulated heart attack, according to Gary F. Merrill, the lead author. The team found that acetaminophen significantly reduced the infarct size by 60% or more by three different key measurements in treated dogs, compared with a physiologically identical but un...Computer analysis shows scientists could reconstruct the genome of the mammalian common ancestor
... various pathways of mammalian evolution to create simulated modern DNA sequences for 20 different species. Then they used their reconstruction procedure (a completely separate process that incorporates no information from the simulation process) to recreate the ancestral sequence. Comparing the reconstructed ...Science to restore the nation's ecosystems
...nd sets the stage for companion posters describing simulated water management operations developed at the USGS Fort Collins Science Center to improve fish restoration. The South Florida Information Access (SOFIA) System , Heather S. Henkel, USGS Coastal and Watershed Studies, St. Petersburg, FL, 5:00-7:00pm...Balancing 'hysteria and suspicion': Doctors face new responsibilities in 'bioterrorism era'
...education programs and community drills (such as a simulated smallpox scenario Evans and Clements developed for the CDC for use by state and local health departments) are critical in preparing doctors, they said. The exercises are designed to help physicians see how things may unfold in an atypical outbreak of...Weizmann Insitute scientists show how proteins beat the evolutionary stakes
...tely random manner. Evolutionary pressure was then simulated by selecting those mutants with higher levels of activity in one of the promiscuous traits. After several rounds of mutation and selection, the scientists looked at their enzymes to see what had changed. As expected, they had managed to increase...MSI releases 'moleculizer' - a new approach to simulation of intracellular biochemical networks
...s in analyzing data and in testing hypotheses with simulated outcomes before testing them experimentally. The predictive capabilities of computer simulations can also aid biologists in viewing cellular activity over a period of time, by taking advantage of the power of computers to generate the thousands of po...No blind mice, thanks to UF scientists
...he formation of SDF-1 in the eyeballs of mice with simulated retinopathy, ending the explosive blood vessel growth that characterizes the condition. Researchers effectively silenced SDF-1's signal to activate normally helpful blood stem cells, which become too much of a good thing within the close confines of...Communication during a terrorist attack; Workshop in Austin, Texas
...agers, scientists, and engineering experts -- in a simulated response to a terrorist attack in their hometown. The workshop is designed to educate participants on the challenges and importance of getting accurate and timely information to the public during a crisis. DETAILS: The workshop is on Jan. 27 from 9...Brain 'avalanches' may help store memories
...rain avalanches, Beggs and IU senior Clay Haldeman simulated the spreading activity of brain cells in a computer model. When the activity was tuned to mimic the avalanches seen in brain tissue, a large number of stable activity patterns appeared. Stable activity patterns are thought to be important for memory,...VCU research shows erectile dysfunction drug reduces death of heart cells in heart attack model
...lular model where heart attack-like conditions are simulated in a Petri dish, they demonstrated that NO produced from sildenafil inhibits cell death by stabilizing mitochondria, increasing the level of the anti-death protein, Bcl-2, and inhibiting caspase 3, the protein considered to be the ultimate weapon in ...Flocking together: Study shows how animal groups find their way
...ere to go. First, the researchers programmed their simulated animals with a basic urge to stay near others, but not collide with them. This instinct alone caused individuals to form close-knit, evenly spaced groups like those of real animals, which pay a high price -- such as being eaten -- if they stray from ...Melatonin shrinks bird gonads. What does the popular supplement do in humans?
...der different lighting conditions. Quail raised in simulated short days, which would be expected to produce high levels of melatonin in the brain, had correspondingly higher levels of GnIH than did quail raised with longer periods of light, which would be expected to produce less melatonin. In addition, the sh...Communication during a Terrorist Attack; Workshop in Atlanta, Georgia
...agers, scientists, and engineering experts -- in a simulated response to a terrorist attack in their hometown. The workshop is designed to educate participants on the challenges and importance of getting accurate and timely information to the public during a crisis. DETAILS: The workshop is on March 24 from ......an antibiotic in people living for a few days in a simulated zero-gravity atmosphere. "This approach is not just limited to anti-infectives," Derendorf added. "We can expand it to other classes of drugs. It may be useful to answer many, many different questions." The PK/PD approach aims to ensure that doses te...Poplar trees redirect resources in response to simulated attack
...tion of nutrients in poplar trees in response to a simulated insect attack. The research provides new insights on a long-debated theory about how plants respond to environmental stress, and shows that radiotracer imaging can be a big help in unraveling plant biochemistry. Done in collaboration with scientists...