A humble spice found in nearly every kitchen could yield a safer, simpler way to produce gold nanoparticles, according to a new study. Researchers say the cinnamon-infused particles can even be used to fight cancer.
Almost exactly one year ago, two Chinese women earned the distinction of becoming the first humans to be killed by nanotechnology, after nanoparticles in a paint used in their poorly ventilated factory took residence in their lungs, causing respiratory failure. Now a team of researchers at North Carolina State have developed a method of modeling the way nanoparticles interact with biological systems, giving medical and nanotech researchers their first means to predict how a given particle will move through a human body.
Your dentist may soon be moving from needle drugs to a snort-able variety. Researchers have found that local anesthesia delivered through an inhalable nasal spray quickly travels down one of the face’s primary nerves to the mouth, which could be more effective than injecting it into the gums with a needle.
Carbon nanotubes may not be so bad for you after all. Past studies have suggested that carbon nanotubes are biopersistent -- that the human body cannot break them down -- but a team of Swedish and American researchers has discovered that an enzyme found in white blood cells can break down nanotubes into harmless water and carbon dioxide.
Medics still use morphine to relieve the pain of wounded soldiers on the modern battlefield, but have to watch out for morphine reducing breathing and blood pressure to dangerous levels. That may all change with a DARPA-backed combination drug that has successfully limited morphine delivery when it detects low blood oxygen levels.
When surgeons need to deliver a payload directly to a patient's brain, it usually involves a rather invasive procedure that opens the skull and leaves the delicate grey matter inside inflamed. But researchers at the University of Minnesota have discovered that patients with brain maladies can simply snort stem cells through the nose and directly to the brain, offering an effective and fast alternative to complicated neuro-surgical procedures.
Engineers copy a toxic-jet-spewing beetle to design better drug-delivery devices, fire extinguishers and more
By Gregory MonePosted 04.02.2008 at 11:13 am 0 Comments
The bombardier beetle spits out a dangerous jet of venom to ward off predators, and scientists are now figuring out how it expels the toxic stuff.
According to an article in April's issue of Physics World, the beetle's abdomen essentially harbors a small chemical lab and combustion chamber. The gases react inside the confined chamber, eventually cranking up the heat and pressure to a point at which a valve is forced upon, and the toxic jet spurts out.