Engineering
Top stories summarized by our editors
4/21/2017

Athletes use the Nordic hamstring exercise to strengthen those pesky, cordlike but crucial muscles in the back of the thigh known as hamstrings. Now they have a way to measure their progress with the NordBord, a device that facilitates the exercise while measuring the athlete's progress with an array of sensors gauging isometric and eccentric strength.

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ASME.org
4/21/2017

Glass normally consigned to waste bins takes the place of graphite in electrodes for lithium-ion batteries and does a better job, according to engineers at the University of California at Riverside. Their research, built on previous findings that nanostructured silicon anodes can be 10 times as efficient as graphite, uses a three-step technique that grinds glass into powder, creates a reaction with magnesium to reduce it to nanostructured particles and then coats the result in carbon.

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The Engineer (U.K.)
4/20/2017

Efforts to quickly restore environments after nature's disasters may ultimately yield more harm than good by disturbing the natural cycle of recovery. A disruptive that we regard as a catastrophe may in fact prove an opening for needed renewal if human beings only refrain from intervening, says Australian National University ecologist David Lindenmayer.

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Scienceline
4/20/2017

The USS Gerald R. Ford has completed its first sea trials and is back at home in Hampton Roads, Va. Huntington Ingalls Industries said systems, components and compartments were all tested during the trials of the Ford, the first of three new carriers.

4/20/2017

The USS Providence is back to the Navy 23 days ahead of schedule after a Pre-Inactivation Restricted Availability project at Portsmouth Naval Shipyard. "It is our commitment to safety and quality that enables us to deliver these submarines on or ahead of schedule and provide the combatant commanders with the assets they need, when they are needed," said Navy Capt. Dave Hunt, commander of the shipyard.

4/20/2017

Finland's Wartsila will produce a package of engines and propulsion machinery for a new cutter suction dredger, or CSD, vessel. The system is intended for Spartacus, the most powerful CSD yet and the first to be powered by liquefied natural gas.

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liquefied natural gas, Wartsila
4/20/2017

The USS Carl Vinson carrier strike group has not yet set sail for waters off North Korea despite repeated indications that it would. However, it's expected to be in the area next week, and its deployment has been extended by 30 days.

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Carl Vinson, North Korea
4/20/2017

BAE Systems is to continue providing canisters to support the Navy's MK 41 Vertical Launching Systems under a $40 million contract modification. The systems are integrated with guided-missile destroyers such as Arleigh Burke-class and Ticonderoga-class vessels.

4/20/2017

Nine hybrid electric drive systems from Leonardo DRS Technologies will outfit the Coast Guard's new Offshore Patrol Vessels. The systems will be attached to the ships' main propulsion gearboxes to allow them to run quietly during loitering operations.

4/20/2017

The Coast Guard has concluded Operation Taconite, its icebreaking chore this season on the Great Lakes. The operation cleared a path for ore boats from Minnesota's Iron Range to reach steel mills in Indiana.