The ear's cochlea is a natural ion-bearing battery, which means it can produce a weak voltage. Recently, researchers from the Massachusetts Institute of Technology (MIT) have developed a microchip that can operate with only a weak voltage, so that it can be powered by the ear. Konstantina Stankovic, an ear and ear doctor at the Massachusetts Hospital, pointed out that in the past, people often thought that implanting a chip in the human body was a very dangerous thing, but now it is different. The current technology can completely allow such surgery. The medical profession has been a natural battery in the cochlea for 60 years, but no one has tried to use it to supply electricity.
It is reported that MIT researchers implanted this miniature electronic device in the ears of Guinea pigs. The result of the experiment was not only that the device was operating properly, but also that the pig's hearing test page was normal.
However, the current research results are still not mature. According to the researchers, in order to maintain the normal hearing of the recipient, this power supply process can only last for about 4 minutes and 20 seconds.
A fitting is any part used in a piping system to change direction or function and joined to that system by some mechanical means or by welding. The simplest way to change the direction of a pipe would be to bend it.However, besides restricting the flow, this method often distorts the shape of the pipe and reduces the wall strength. Another method of altering direction is with mitered joints, I.e. straight piecesof pipe cut for the required turn and welded together. This type lowers flow efficiency considerably by creating greater turbulence. A single mitered bend has about six times the resistance of a smooth elbow. Fittings are preferable for most piping systems where rate of flow, internal pressure and protection against a corrosive environment are primary design considerations
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