Tag: "waves" at biology news
Bursts of waves drive immune system 'soldiers' toward invaders
...tists have discovered that torrents of microscopic waves
propel white blood cells toward invading microbes....very high-resolution light microscope, the dynamic waves
are made of a signaling protein that directs cell movement. This protein and a second key player wer...
Computer graphics spills from milk to medicine
...axwells equation for scattering of electromagnetic waves
by a homogenous, spherical particle embedded in a non-absorbing medium. The Lorenz-Mie theory has been around for more than a century and was introduced to graphics in 1995. In computer graphics, it has been used to compute the optical properties of ...
Human knowledge is based upon directed connectivity between brain areas
... unfamiliar during the registration of their brain waves
(EEG). Unfamiliar objects represented complex visual patterns, physically resembling the familiar ones in every possible way, except for familiarity. Familiar objects represented objects of every day's life such as cup, dog or violin. Actually, in t...
St. Jude study solves mystery of mammalian ears
...n it would be if the cells were absent. As sound waves
race into the inner ear at hundreds of miles per h...although dissipated by the cochlear fluidgenerates waves
in the fluid, somewhat like the tiny waves
made by a pebble thrown into a pond. This energy causes t...
American Chemical Society's Weekly PressPac -- July 18, 2007
...ological fluids or other liquids, using ultrasonic waves
as the energy source. It sets a solid foundation for self-powering implantable and wireless nanodevices and nanosystems in biofluid and any other type of liquid, the report states. ARTICLE #2 FOR IMMEDIATE RELEASE Integrated Nanogenerators in Biofl...
Changing climate will challenge Northeast agriculture, CU expert warns
...ortheast can also expect more frequent summer heat waves
that could compromise the health of crops, livestock and humans, said Wolfe. What will happen in the future, he said, depends "on whether we as a society follow the business as usual [higher] emissions scenario or begin taking action now to reduce gr...
How pain distracts the brain
...ical technique, harmless magnetic fields and radio waves
are used to scan the brain to determine blood flow across regions, which reflects brain activity. The researchers experiments identified a brain region called the lateral occipital complex (LOC) as the cognitive-related area affected by both workin...
Bright future for nano-sized light source
...onics, a technology in which the movement of light waves
replaces the movement of electrons as information carriers, promises computers and networks that are thousands of times faster than what we have today. Lasers, waveguides, non-linear optical converters and photodetectors are all important component...
Gene responsible for common hearing loss identified for first time
...rowing bone in the middle ear interrupts the sound waves
passing to the inner ear. While the causative factors remain unknown, now one of the genetic components has been identified, Ms Thys told the conference. The gene in which the variant is located points to a pathway that contributes to the disease. Th...
Caribbean frogs started with a single, ancient voyage on a raft from South America
...han earlier. "The asteroid impact generated giant waves
that devastated the islands, probably eliminating any existing fauna at that time," Hedges said. The original frogs that successfully colonized the Caribbean islands likely hitched a ride on floating mats of vegetation called flotsam, which is the ...
Modeling the restless brain
... when people are at rest. In this "resting state," waves
of neural activity ripple through the brain, creating fluctuating and ever-changing patterns. Sporns and Honey's work on modeling this brain activity sheds new light on how and when these mysterious fluctuations occur and offers insights into what th...
A first: Simultaneous PET/MR images of the brain debut, increase molecular imaging capabilities
...of the body's biological functions. MRI uses radio waves
and a strong magnetic field to provide clear and detailed pictures of internal organs and tissues. Functional MRI (fMRI) is a procedure that uses MR imaging to measure the quick, tiny metabolic changes that take place in an active part of the brain. ...
Research finds evidence tropical cyclones have climate-control role
...llent source of inertial oscillations, or internal waves
that cause mixing in the upper layer of the ocean,...ion to other processes." Tropical cyclones cause waves
below the surface of the ocean that break, just like what can be seen on the beach shore. When the w...
Magnetic field uses sound waves to ignite sun's ring of fire
escaping the sun's interior create fountains of ho...ave energy from its interior, permitting the sound waves
to travel through thin fountains upward and into the solar chromosphere. The magnetic fountains form...
A living memory chip, black holes on the loose, and a clearer picture of ocean currents
...Two merging black holes can generate gravitational waves
so powerful that the merged hole shoots out of its host galaxy at a speed of up to 2,500 miles per second, according to a new simulation. This research, led by Manuela Campanelli at the Rochester Institute of Technology, demonstrates for the first ti...
In new statistical approach, data decide model
...ttering, the researchers use the scattered seismic waves
to reconstruct the scattering structures. In that ...sity used the numeric technique to analyze seismic waves
and infer the shape and temperature of Earth's core-mantle boundary region. The researchers reported...
Dinosaur hearing, listening to muscle noise, quieter cubicles
...ical conditions in office cubicles" How can sound waves
diagnose and monitor muscle activity" These and ...urface sensors follow the passing of natural shear waves
traveling along the muscle fibers. By the way, the Scripps scientists were originally interested in...
Satellites shed light on global warming
...anding oceanic planetary waves, which are internal waves
that have major effects on large-scale ocean circulation and thus on climate. These very long waves
travel slowly across the oceanic basins influencing the major oceanic currents and are believed to p...
Terahertz imaging goes the distance
...ve lingered over whether it is possible to use THz waves
to image objects that are far away, because water vapor in air absorbs THz radiation so strongly that most of it never reaches the object to be imaged. At the upcoming CLEO/QELS meeting in Baltimore, an MIT-Sandia team will demonstrate the first re...
Envisat Symposium 2007 kicks off in Switzerland
..., volcanoes, earthquakes, floods, fires, winds and waves
and oil spills, among others. The conference will also include a special session dedicated to the joint ESA/European Commission Global Monitoring for Environment and Security (GMES) programme, including the GMES space component, Sentinel missions ...
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