The US Department of Energy has recently introduced a plan that says that by 2030, about 20 percent of the energy needs of the United States will be supplied by wind power. The plan is undoubtedly very ambitious, but thanks to the efforts of scientists from Sandia National Laboratories, its implementation is quite possible.
Wind farms are currently one of the most efficient methods of producing electricity. The problem is that windmills are not very popular with the public because they occupy a lot of land, spat landscapes, and do not always blow enough wind to produce energy. That is why it is increasingly installed in the ocean just near the coast, where the wind is stronger and more stable. However, this solution is much more expensive, so its efficiency is falling significantly.
Sandia National Laboratories has developed a technology that can change that. Engineers have created a completely new 195-meter turbine blades for two football pitches that will be able to produce as much as50 megawatts of power. This way one colossus can produce enough energy to feed 10,000. So a wind farm consisting of several dozen turbines could supply a large city with energy.
The special blade design, unlike conventional windmills, allows them to move with the wind so they do not have to be so tough, which in turn reduces their weight. In addition, the shovels can fold in the direction of the wind, and this greatly reduces the risk of damaging them in the event of strong winds.
Researchers from the University of Manchester, together with Oxford BioElectronics, are working on a new method that could significantly speed up wound healing. It could help in the faster treatment of patients after surgery and accelerate the recovery of athlete injuries.
Technological progress has made treatment of patients today much simpler and more effective than decades ago. And ongoing research brings new inventions that can further improve this process. The latest idea is being developed by researchers at the University of Manchester, in collaboration with Oxford BioElectronics and is concerned with accelerating wound healing by electrostimulation of wounded areas.
A recent 40 volunteer test gave very promising results. Each patient had an identical wound on both arms. The left was treated in the traditional way, while in the right case a small electrical impulse was used, which was applied four times over a period of two weeks. These pulses stimulate a process called angiogenesis that accelerates the formation of new blood vessels and leads to increased blood flow to the damaged area. After 10 days, the wound was much smaller and deeper than this treated in the normal way, so it healed much faster. You can see this very accurately in the image below.
Ardeshir Bayat, head of the study, says the new method may be particularly useful for treating chronic wounds but also for any other type of lesion, much faster putting the patient on foot.