Tag: "worn" at biology news

Shifting liquid crystals may serve as personal, portable chemical sensors, Science researchers report

...osure. We wanted to create something that could be worn like a badge, like those worn to detect radiation," says Abbott. The sensor devised by Abbott and co-author Rahul R. Shah of the 3...

Ancient reptile is efficient chewer

...noted, the scientists observed that one end of the worn surface showed a deeper "divot" at the junction between the hard surface enamel and the softer dentine than the other. The shape of this dentine surface indicated where sand and other particles had been jammed against the enamel, proving that the mot...

Scientists isolate premature ovarian failure gene

...tion of cells and even regenerate tissues that are worn out. In the next phase of research, investigators will likely look for the underlying mechanisms that cause women with this genetic mutation to produce fewer eggs, Dr. Schlessinger said. The mutation, for instance, may arrest normal egg follicle d...

A new way for cells to die

...led in dying cancer cells, it appears to be a well worn path in brain cells, and therefore a potentially important therapeutic target." Dr. Sabina Sperandio, lead author, said that the next steps for this research will involve a "functional genomic characterization of the pathway, involving follow-up of ...

Discovery of armored viruses may inspire new designs for nanotechnology

...his virus - remarkably similar to chain mail suits worn by medieval knights - had been predicted but never...," says Johnson, referring to the chain mail suits worn by knights in the Middle Ages. These protective outfits - made of interwoven rings of iron - were de...

The ultimate pocket protector--radiation detection made easy

...r tangibly through vibrations. Small enough to be worn on a belt, the dosimeter is discrete-a plus for Customs workers, and the availability of comprehensive real-time data enables the quick responses needed to apprehend potential smugglers. "The mathematics are simple," insists Aryaeinejad, "but no on...

Cloning reverses aging in cow cells, Scienceauthors say

...s can't repair themselves, they are usually slowly worn away over time--shorter telomeres are often found in older cells. Scientists spotted this telltale sign of maturity in Dolly. Her chromosomes were shorter than those of normal sheep of the same age, suggesting that she had inherited the "age" of her ...

SIDS prevention tactic leads to epidemic of 'misshapen head' in infants

... He was also fitted with a custom-made "helmet" -- worn virtuallyaround the clock for four months -- to help reform his head and reposition hisfeatures. Treatment of the condition includes neck physical therapy to correct themuscular torticollis along with repositioning techniques and/or helmet therapyto ...

Growth Factor Contributes To Angiogenesis

...itself of cells it no longer needs -- for example, worn out or damaged cells or cells that have done their jobs and are not longer needed. The researchers showed that VEGF protects blood vessel cells from cell death. The U-M team first demonstrated this effect in culture dishes in whichnutrients ...

Bones of Crocodile-like Beasts Tell Tale of Global Warming

...ars - in mostplaces the layer doesn't exist or has worn away," says Tarduno, a geophysicistwho studies Earth's magnetic field. "We were walking along a ridge, and wespotted a layer between the brown volcanic rocks and the black marine shale.From a distance we knew that these rocks represented an environme...

Digging In And Taking Cover

... to absorb that, until eventually the radiation is worn down. Oddly, one of the better ways to stop radiation is with lightweight materials - hydrogen, boron, and lithium. The nuclei of heavy elements in cosmic rays can be shattered by lightweight atoms without producing additional hazardous recoil pro...

Study Shows Athletes Get No Kick From Nasal Strips

...on Sciences. "We wanted to see if the strips, when worn correctly, have any effect at this level of performance. The answer is, they don't." The strips are designed to hold the nostrils open. They make breathing through the nose easier during low or moderate activity, such as a slow jog or leisurely...

New Machine Slashes Time, Cost To Make Unique Lenses

... many opticaldevices, such as night-vision goggles worn by soldiers. Replacingbulky groupings of three or four spherical lenses with an asphereor two would make the goggles 30 percent smaller and lighter,Pollicove says, while also boosting image quality andresolution. But aspheres' subtly irregular c...

Microsurgery Made More Accurate With Virtual Measuring Tool

...nput device. Active liquid shutter glasses must be worn to visualize the pointer and video images in stereo. To test the accuracy of the system, seven subjects used the VTM to measure distances between two dot models placed under the operating microscope. The absolute distance between the two dots ranged ...

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