Containers of unknown and possibly hazardous materials are often found at laboratories, industrial buildings, dump sites, and other locations. Labeled containers may have been refilled or their contents chemically changed over time. In addition, corrosion can render containers fragile and prone to rupture when moved. A researcher at the Los Alamos National Laboratory has invented two devices that can open unknown containers--without endangering the operator or the environment. The devices use a remote-controlled, air-powered piston to puncture and vent containers and draw samples. They can contain escaping substances and neutralize or pump out the container's contents. One version straps directly to large containers, such as 55-gal drums, while the second is an adjustable device that holds containers ranging from small milk bottles to 30-gal drums. According to the researcher, the sampling devices are environmentally friendly, inexpensive to produce, and compatible with breathing equipment frequently used by hazardous material teams. E-mail email@example.com.
The choice between helical and spur gears in gearboxes may seem straightforward. But with planetary gearboxes, however, the choice between helical and spur gears requires some additional thought. Here’s what you need to know to make the right choice.
Cas Smith is a biological engineer at Terrapin Bright Green, a consulting firm that specializes in green and sustainable design. At the core of his work is to explore how biomimicry can inform sustainable design. He discussed biomimicry and its implications for design and solving some of the world’s sustainability issues in an interview with Design News.
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