Tag: "waves" at biology news
Core Spins Faster Than Earth, Scientists Find
...e directions and creates a "fast track"for seismic waves
in a near north-south direction. More recentstudie...scovery. Dr. Songand Dr. Richards studied seismic waves
from 38 earthquakes thatoccurred between 1967 and 1995 near the South Sandwich Islandsat the bottom ...
Hibernation: The Opposite of Sleep?
...eks, virtually braindead, with no detectable brain waves
or signs of breathing. Once or twice a month, however, it stokes up its metabolic furnace andlaboriously rewarms itself. The cyclical rewarming, which costs more than 80 percent of the squirrel's stored body fat, has stumped scientists for more than...
North America Hit Hard By Asteroid Strike In Yucatan 65 Million Years Ago
...at of the atmosphere and planetary surface to send waves
ofground-hugging, vaporous fireballs onward, the s...s,which show that gaseous material is propelled in waves
downrange after anobject strikes a planetary surface at an oblique angle. Schultz used a high-power...
The CIA Would Like To Know What Scientists Are Seeing Over The Rainbow
...l karyotyping," translates computer-gathered light waves
into a full-color palette and assigns each chromosome its own distinct hue. With all 23 pairs of human chromosomes identified by a different color, scientists can more easily examine the entire group of chromosomes for changes that could lead to dis...
Merging Physics And Neuroscience: First Evidence Of Self-Organized Criticality In Brain Networks
...ting point for a completenew way of thinking about waves
in the brain and diseaseprocesses." Jung and Dr. ...t. Louis, noticed similarities between calcium ion waves
thatCornell-Bell observed and mathematical models of noise-enhancedpattern formation developed by Ju...
Doublecortin : A Novel Gene Involved In Cortical Development
...ral cortex is formed bythe migration of successive waves
of neurons. It is well established thatdefective neuronal migration can lead to severe cortical malformations, but thefactors involved in this phenomenon are poorly understood. An interestingcandidate is the Doublecortin gene, which has just been ide...
STS-89 Will Carry Five Science Payloads From NASA/Marshall
...ears,that under certain conditions - such as shock waves
produced during an earthquakeor the collapse of a grain silo - that what looks like a gigantic mass ofsolidly packed-together materials - like sand or grain or agricultural productsin a process conveyor belt - will suddenly behave as if they were a f...
At Life's Most Sensitive Stage, Embryos Cope With Stress
...tures in asingle day range from the chill of ocean waves
to the sun-baked heat of atidepool. She found that the embryos of snails, laid in gelatinous masses in tidepools,began expressing heat shock proteins 30 hours or more into their development; atthat point, the proteins offered some protection from te...
When To Reproduce? It's All In The Timing
...r team reasoned that when water is being churnedby waves
or tidal currents, the plants are constantly receiving new supplies ofcarbon. Gametes are not released under such circumstances. That changes, however, when the water is calm. Without turbulence, thecarbon supply begins to run out. The UMain...
Mathematics Reveals New Pattern Of Brain Cell Activity
...appens. Terman speculated as to why smooth waves
formed by inhibitory signalsshould travel through neurons so much slower than excitatory signals. Whatever message the neurons are sending, it may be that the brainis trying to keep that information around longer, he said. If the brai...
Echocardiography Is Effective In Measuring Microvascular Damage From Heart Attacks
may be as effective as magnetic resonance imaging ...phy (CE) -- using acontrast medium with ultrasound waves
to study heart function -- could detectblockage of the small vessels of the heart leading to a reduc...
Scientists Find Further Global Warming Evidence In Temperature Reconstruction Study
... frequent extremeweather events, Mann said. "Heat waves
and droughts could become more common,and more intense." Climatologists are also concerned about the degrees of uncertaintysurrounding increased or accelerated global warming. "We have a sense of whatmight happen to the planet as a whole, bu...
New Airway's 'Smarts' Ensure That Patients Get Plenty Of Oxygen
...as one of the fundamental properties of ultrasonic waves
-- thatthey don't travel through air," says Jack Mottley, associateprofessor of electrical engineering. "If a transducer-equippedendotracheal tube is accidentally placed in the esophagus, theultrasonic wave it emits won't reach a receiver mounted on ...
Biggest Acoustics Meeting Ever
...ted to the heavenly tones of a violin? Could sound waves
replace hypodermic needles and scalpels inthe hosp...e exciting progress toward demonstrating how sound waves
may someday replacescalpels and stitches in many forms of surgery. Roy Martin of the University of W...
First TableTop Source Of Concentrated X-Rays Built
...cancel each other out, much like overlapping water waves
neutralize eachother if their peaks and troughs coincide. The canceled waves
produce very dim,diffuse X-ray patterns on the detector. But by adjusting the pressure of thegas in...
Effect of "High-Dose" SWL (8000 Shocks at 24kV) to One Renal Pole on Bilateral Hemodynamics and Tubular Function
...to test the hypothesis that a high "dose" of shock waves
(8000 shocks at 24 kilovolts) to one kidney would cause great, sustained impairment of hemodynamics in both kidneys. Consequently, they used sham lithotripsy, 2000 shocks, or 8000 shocks to the right kidney of six-week-old anesthetized pigs. The fo...
UNMC, Boys Town National Research Hospital Researchers Locate Gene That Causes Combined Deafness And Blindness
...s have tiny hair-like fibers which help turn sound waves
into electricalimpulses that travel to the brain via the auditory nerve. Current research under way at UNMC and Boys Town National ResearchHospital is focused on understanding how the Usher syndrome Type IIa proteinfunctions. Based up...
Researchers Link Gene Defects To The Course Of A Deadly Form Of Heart Disease
...found a strangely long interval betweenthe Q and T waves
on her electrocardiogram tracing. The Q-wave on an electrocardiogram denotes when the cells thatmake up the heart muscle begin to "electrically recharge" aftereach pump, and the T-wave signifies the end of the rechargingcycle, when the heart is ready...
Bat Sonar Sharper Than Thought; Much Better Than Man-Made Gear
...ough sonar, sending out high-frequency sound waves
and registering returning sounds - echoes -from ...ing to Simmons, bats process returning sound waves
in two different ways inorder to form a single, high-definition image. One set of brain-based ...
New Research Shows Loggerhead Sea Turtles Sustain Delicate Dunes
...ive nourishment from rainwater, algae tossed up by waves
and terrestrial animals from behind thedune system that wander across the sand. But sea turtles provide a muchgreater quantity of nutrients to the dune system than these other sources,which is why it is important to understand their role. Bou...
1 2 3 4 5 6 7 8 9 10