The old process of vacuum arc remelting in the specialty metals industry dates back decades, but the Department of Energy has developed a way to address the crucial issues of process control and safety. The arc position sensing technology works by providing a new degree of control over the melting cycle by flagging and automatically avoiding hazardous conditions such as side-arcing.
Samsung Electronics is preparing to transform the cinema experience with a screen that requires no projector. The screen assembles 96 light-emitting diode cabinets for a display that's sharper and nearly 10 times brighter than any kind of projected image, allowing for showings in lighter settings than the typical movie theater.
A test of General Dynamics Mission Systems' Knifefish unmanned underwater vehicle revealed its effectiveness detecting mines, possibly serving to replace the dolphins and sea lions currently used for that mission. The torpedolike drone is powered by a lithium-ion battery and can operate up to 16 hours, recording the location of mines to be uploaded later to a parent ship.
China cites changing weather patterns and El Nino and La Nina events for record-high sea levels last year. The rising waters are said to raise the risk of storm tides, floods and coastal erosion, as well as seawater encroachment.
It was "Christmas in March" over the marshlands of Louisiana's Bayou Sauvage National Wildlife Refuge as National Guard helicopters dropped thousands of used Christmas trees. "The trees provide important habitat for waterfowl and fish, crab, crawfish and shrimp ... [and the measure] reverses shoreline erosion," said refuge manager Shelley Stiaes.
Green infrastructure -- bioswales, permeable pavement, rain gardens and more -- can help reduce the overloading of sewer systems, and Washington, D.C.'s, Stormwater Retention Credit incentivizes property owners to use it.
The program also "provides flexibility in complying with stormwater standards issued to D.C. through the US Environmental Protection Agency's MS4 (Municipal Separate Storm Sewer System) permit," this article states.
Planting cover crops to take root before the cold months is one way Wisconsin farmers are fighting the runoff from manure used as fertilizer on their fields. But now federal funding that has helped foster the effort may be reduced.
The Chesapeake Bay is benefiting from the use of Step Pool Conveyance Systems by several Maryland jurisdictions to slow stormwater runoff before it reaches the bay. The systems incorporate stair-stepped pools with cobble riffles between that allow water to seep into the ground while filter media and vegetation capture pollutants.
New Jersey's South Seaside Park section of Berkeley Township, noted for the dune system that saved it from Superstorm Sandy's floodwaters, is not yet included in the Army Corps of Engineers' beach replenishment plans. Area officials have not yet obtained the necessary access easements.
Citing environmentalists' concerns over possible harm to air quality and wildlife habitat in Southern California's Hahamongna Watershed Park, a court has called a halt to a sediment-removal project behind Devil's Gate Dam. An environmental impact report on the project was deemed insufficient.
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