You don't apply the same force to walk on a wooden floor as you do to walk through snow or mud, for example. Nerve cells in your leg muscle spindles sense the position of the floor and feedback information to the brain. You do not have to look at the floor to know where it is. This system has sensors (nerve cells, muscle spindles), actuators (muscles) and a controller (brain/spinal cord). In this article, we will find out how biomechatronic devices work using these components, explore the current progress of biomechatronics research and learn about the benefits of such devices. Biosensors detect the user's "intentions." Depending upon the impairment and type of device, this information can come from the user's nervous and/or muscle system. The biosensor relates this information to a controller located either externally or inside the device itself, in the case of a prosthetic. Biosensors also feedback from the limb and actuator (such as the limb position and applied force) and relate this information to the controller or the user's nervous/muscle system.
It’s a natural part of living in the information age: You start to feel sick, so you Google your symptoms. Both the common cold and the flu will make you feel miserable, and because both are respiratory infections with similar symptoms - coughing, aching, headache, you know the drill - it can be difficult to know which one has you in its grip. Every year, anywhere from five to 20 percent of the U.S. While many sufferers will find relief in over-the-counter medicines, influenza can be serious. Influenza-related complications may require hospitalization, and sometimes complications can be fatal. Influenza, together with pneumonia (both are lower respiratory infections), ranked as the eighth leading cause of death in the U.S. For its tracking purposes, the CDC considers a fever of at least 100 degrees Fahrenheit (37.8 degrees Celsius) with a cough and/or a sore throat to be an ILI. Beginning on the 40th week of the year - which is the beginning of the October to May flu season - the CDC distributes weekly influenza activity reports.
Like backscatter X-ray machines, millimeter wave scanners produce detailed full-body images of passengers, but they do it with ultrahigh-frequency millimeter wave radiation rather than X-rays. If you went on name alone, you might think "advanced imaging technology machines" could help doctors hunt for tumors or other medical conditions. In reality, the label -- euphemism, if you're cynical -- adopted by the U.S. Transportation Security Administration (TSA) describes the whole-body scanners found at airports that detect weapons, explosives or other threats being carried on passengers. According to the TSA's Web site, the agency had installed 800 advanced imaging technology machines at 200 U.S. November 2012. The machines come in two flavors, based on the type of electromagnetic radiation they use to make a scan. Backscatter machines -- about 30 percent of the installations -- send low-energy X-rays to bounce off a passenger's body. Millimeter wave (mmw) scanners emit energy more akin to microwaves. Both see through clothing to produce a 3-D image of the person standing in the machine.
The Play Station was envisioned as the core of a home multimedia center. Sony only manufactured about 200 of them before deciding to retool the design. The component hardware inside the console was revamped as well, to ensure an immersing and responsive gaming experience. Launched in Japan in December of 1994, and in the United States and Europe in September of 1995, the PlayStation quickly became the most popular system available. When you look inside a PlayStation, you can see the processor and memory chips. Let's take a look at the components inside a PlayStation, and what their capabilities are. The CPU in the PSX is a RISC processor. RISC stands for reduced instruction set computer, and means that the instructions and computations performed by the processor are simpler and fewer. Also, RISC chips are superscalar -- they can perform multiple instructions at the same time. This combination of capabilities, performing multiple instructions simultaneously and completing each instruction faster because it is simpler, allows the CPU to perform better than many chips with a much faster clock speed.
The 1995 space shuttle Columbia mission included an experiment to demonstrate how food could be grown in greenhouses by astronaut pioneers on the moon. This experiment consisted of a small greenhouse fitted with a special device to reduce the amount of ethylene buildup. Comprising carbon and hydrogen, this gas is produced naturally by plants and helps them ripen. In the sealed environment of a space greenhouse, ethylene gas can build up, making food plants ripen too quickly and begin to spoil. In order to increase the lifespan of crops grown in space, the ethylene has to be removed. NASA invented a device called an ethylene scrubber, which circulates the greenhouse air through tubes coated in titanium dioxide and then exposes it to ultraviolet light. The resulting chemical reaction converts the ethylene gas to water. Carbon dioxide -- both of which are good for plants. Aboard the Columbia, the ethylene scrubber successfully preserved a batch of potato seedlings for the duration of the mission.
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Russia begins to mobilize military reinforcements for Ukraine as casualties mount, Pentagon says
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