Tag: "plastic" at medical news

Transcranial Magnetic Stimulation Enhances Short-Term Brain Plasticity

...ide of the brain, the brain?s responsiveness inthe plastic cortex decreased. This shows that stimulation of the non-plasticcortex somehow inhibits plasticity on the opposite side of the brain. "This paper addressed the possibility of modulating reorganization in anon-invasive way," says Dr. Cohen. ...

X-ray Microscope Designed To Study Jet Engine Components Now Probes Tooth Dentin

...s between the natural material of the tooth andthe plastic filling. Strong bonds form easily between restorative materials and the surfaceenamel of teeth because about 97 percent of the hard surface material ismineral. But because tooth decay eats through the enamel and into theunderlying layer of the...

Tiny Pellets Could Deliver Alzheimer's Drugs

...olyethyleneglycol, giving the protein a protective plastic shell. This has the potential of being injected directly into the brain via a large-bore needle or catheter. Belcheva has modified the NGF molecule chemically so that it will bind with the polymer. The microspheres have not yet been tested in rat b...

Sunlight Poses Universal Cataract Risk

...f protecting theireyes." Even inexpensive, plastic sunglasses are good absorbers of UV-B,according to West, and how dark the glasses are isn't an issue, since anyplastic eyewear will absorb the invisible UV-B light. For children, however,the glasses should be shatterproof to prevent eye injury in ca...

Safe Water, Medicines, Insecticides Greatest Needs After Mitch

...fication including granular hypochloride, 5-gallon plastic water jugs, andequipment to measure residual chlorine. Dr. Prado emphasized that PAHO does notsupport indiscriminate sending of medicines, which can clog the supply deliverysystem. Without improvements in sanitary conditions, health problems most li...

Radically New Type Of Surgery Tested On First Patient

...nger-sized hole in thepatient's skull. He placed a plastic bolt in the hole to provide a subsequententryway f...wasattached to a guidewire, which was covered by a plastic catheter. "The catheteris much narrower than a drinking straw but a bit fatter than spaghetti," says...

Bone Cement Used In Total Hip Replacements Slowly Degrades In Body Over Time, According To UCSF Study

...tal hip replacement, he said, is the metal balland plastic socket may become loose, resulting in pain. If loosening issignificant, a revision of the joint replacement may be needed. About 90percent of hip replacements last 10 years and 80 percent last 20 years. In the current study, Ries and research co...

'Glitches' discovered and fixed in animal study make surgery for human pituitary tumors quicker, safer and less painful

... in 1996, Dr. Shahinian trained ingeneral surgery, plastic surgery, microsurgery,craniofacial surgery and skullbase surgery. This 'hybrid' education provides him with a unique set of skillsthat is perfectly suited to treating pituitary tumors and other disorders thatcommonly occur at the base of the skull....

UNC-CH study shows compressed air sleeve prevents blood clots during hip replacement

...tonto make them a sterile version of an inflatable plastic sleeve they could havepatients wear for the first time during operations. Other doctors had fittedpatients with non-sterile sleeves only after surgery, but that seemed likely tobe less effective, the two thought. More than 500 hip replacements later...

Sound of silence: "Quiet Curtains" combine audio privacy and aesthetics for nursing homes, hospitals, hotels and offices

...re retention andstrength. Finally, they selected a plastic materialto use as noise shielding material for the Quiet Curtains nursing homeprototype. In benchmark studies, the prototype reduced noise by about 7 decibels (dB).What's more, by adding a floor extension and valance, noise droppedapproximately 12 ...

Self-assembly of new microstructured material defies textbook physics

... is to remember that objects in water, such as the plastic beads,are surrounded by an invisible cloud of ions. Under the experiment's conditions,these ions spontaneously migrate in such a way as to overwhelm the membrane'sown positive charge, and effectively reverse it in the region not covered bybeads. The ...

Researchers learn how stress slows wound healing

...ter, covered the wound with plastic and then filled the smallblister "well" with a sterile solution. The wounds were thensealed. After five hours, the fluid at four of the blister siteswas removed for testing. Fluid ...

12-year-old Oregon girl is first child to receive new bone growth material in her skull

...., OHSU department of surgery(division chairman of plastic and reconstructive surgery) and chief of plasticsurgery at Doernbecher. Emily was born with several congenital deformities. Her physicians say sheprobably has Antley-Bixler which caused her elbows and legs to fuse together, craniosynostosis that fuse...

You have to break a few (hundred) eggs to make a good crystal

...and his team grew the crystals in trays with small plastic wells filledwith solutions containing a trace of salt to help stimulate crystal growth.Temperatures ranged from 4 to 18 deg C (39-64 deg F) and pH from 4.0 to 5.2(slightly acidic; pure water theoretically has a pH of 7). Judge also varied thedriving ...

'Plug and patch' method of hernia repair an effective replacement for old surgical methods

...e hole is then coveredwith a specially formulated, plastic mesh patch, which is placed over the entiregroin area for reinforcement before the incision is sewn up. Total time forthis surgery is often about 30 minutes and because the patient is on localanesthesia there is no grogginess to overcome. "Most of m...

Scientists grow heart tissue in Bioreactor

... be fooled into thinking they are in abody. With a plastic lattice to help direct their growth, cells can beencouraged to grow in predefined shapes, just as the vine-covered barn givesshape to vines. Between September 1996 and January 1997, Freed and Vunjak-Novakovic with NASAcolleagues achieved the first su...

New plastic heals damaged nerves

...ed by auto accidents, gunshot wounds, lacerations, plastic surgery and nerve cancer - are even more common th...o grow. The nerve continues growing even after the plastic has degraded, reaching its muscle target weeks or months later. Researchers have explored the us...

Synthetic rubber kills germs on contact

... of polymers mixed with special disinfectants. The plastic slowly releases the disinfectant over time, killin...h its surface. When the disinfectant runs out, the plastic permanently looses its disease-fighting ability. Worley's technology introduces a chemical s...

"Radical" Discovery Advances Medicine and Plastics

...anufacturing nearly half the polymers we use, from plastic packaging to latex paint. More recently, organic free radicals have played a pivotal role in basic research. They explain why some oxidation processes support life and others cause disease. They enhance our understanding of how the cardiovascular sy...

Product design and drug development breakthroughs help the environment

...eveloped the EnvirogluvJ method to label glass and plastic containers in a cost-effective, environmentally fr... U Using water, not hazardous solvents to spray on plastic coating (Pittsburgh, Pa.) - Scientists with Bayer Corporation, in Pittsburgh, Pa., devised polyureth...

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