If Superman and Stretch Armstrong produced offspring in some hideous experiment, they might hope to create a new, upgraded iron alloy with super-elastic powers which allow it to keep its original shape even after stretching. Now Japanese researchers have done just that with added bonuses such as better ductility and a change in magnetization, Reuters reports. That may lead to better surgical interventions and even quake-proof structures.
Every year, 800,000 Americans elect to have a tiny metal-mesh tube inserted into their coronary artery to prop it open and improve blood flow to cardiac muscle tissue. It's an easy choice — the alternative entails cracking open the chest and operating on a stopped heart. The tube, or stent, is permanent, but the vessel hardens over it within months. After that, it becomes a nuisance. The metal blocks x-rays and MRI scans, and it can catch blood cells and form a dangerous clot. Now medical-equipment manufacturer Abbot Laboratories has developed a stent that opens the artery and then simply disintegrates.
Fat sticks around in your bloodstream when you're uptight.
By Gail DuttonPosted 04.11.2002 at 3:00 pm 0 Comments
Stressed out? Forget that fat-laden comfort food and have something light. Researchers led by Catherine Stoney at Ohio State University have found that fat sticks around in your bloodstream when you're uptight. First the researchers injected calm people with triglycerides (any fat that comes from an animal or plant) and found that the fat left their bloodstreams at a rate of 3.2 percent per minute. But when the same subjects were asked to give a speech, solve a word problem, or quickly subtract two numbers, their bodies cleared a mere 2.8 percent of the fat each minute.