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(a) A low-magnification tunneling electron microscope (TEM) image of Gr–Si nanoparticle (NP). (b) A higher-magnification image for the same Gr–Si NP from the white box in a. (Insets) The line profiles from the two red boxes indicate that the interlayer spacing between graphene layers is ~3.4 Å, in good agreement with that of typical graphene layers based on van der Waals interaction. (c) A high-magnification TEM image visualizing the origins (red arrows) from which indivi ...
Detecting explosives at a “standoff” distance—defined as a meter or two--remains an important, yet elusive, capability requirement of the Department of Homeland Security (DHS) in their effort to protect government facilities. Currently, vehicle screening methods consist of visual inspections and occasional random security officer or canine inspections. Although these measures offer substantial deterrence value, they provide very limited discrimination capabilities against harml ...
It's pretty well known that for mould to flourish it needs a wet and warm environment. So what better place than a Food & Beverage plant where you can find high pressure washers, fluctuating temperatures and organic substances.   We know this is not a revelation to the Food and Beverage industry; hence the stringent hygiene requirements that are rightfully put in place to ensure factories meet the standards we expect as consumers.   However what F&B manufacturers may not be a ...
Mockup of E-plane  version 2.0   The E-fan plane from Airbus Group is a fully electric aircraft that operates exclusively via twin 30kw fan engines powered by 120 lithium polymer batteries stored in its 31 ft. wings. Built of carbon fiber composites it weighs only 1100 pounds and can stay aloft from 45 to 60 minutes. Its batteries can be recharged in one hour, according to Airbus. The two-seater is CO2 emission-free and nearly silent in flight. Since its first flight on 11 March 2014, ...
Our Engineering a Connected World geocaching campaign has caught the eye of a few media outlets since it launched last week. They include:   Power Systems Design - element14 kicks off geocaching treasure hunt Electronics Purchasing Strategies - element14 Kicks Off Geocaching Treasure Hunt   Stay tuned for more! ...
Unless you’ve been living in a cave these past few years, and possibly even then, you know about Instagram, the popular online vehicle for photo-sharing, video-sharing and social networking that enables its users to take pictures and videos and share them on platforms such as Facebook and Twitter. Now, if Google has its way you will soon be able to use Instagram to calculate the calories in pictures of food you post on the social media site.   A new Google experimental app called Im2C ...
When you were young and your Dad--and/or Mom--took you to a baseball game and you walked into a magical place named Wrigley or Fenway or Yankee Stadium, just after they tore your ticket (in my case it was long before bar code scanners) you were immediately serenaded with the following chant: “Scorecard! Get your Scorecard here! Ya Can't Tell the Players Without a Scorecard!” The scorecard was an essential part of the day’s occupation because with the exception of some w ...
Northrop Grumman Corp. has formed a scientific advisory board to guide its efforts to develop a lighter-than-air vehicle to explore Venus's environment. The company's Venus Atmospheric Maneuverable Platform (VAMP) concept is a long-lived, maneuverable, semi-buoyant platform that would coast through Venus's clouds gathering atmospheric data. The board will help define specific science goals, measurement requirements, and identify possible instruments for VAMP missions. It will also serve as a sci ...
An additional “leap” second will be added on to the end of the day on June 30, 2015, resulting in an unusual 61-second minute. . This decision was made by the International Earth Rotation and Reference Systems Service (IERS), the global timekeeping body, in order to reconcile atomic clocks with the Earth's rotation around its own axis, which is gradually slowing down, although very slowly. Two components are used to determine time. Coordinated Universal Time (UTC) utilizes 200 ...
Lidar is a remote-sensing technology that measures distance by illuminating a target with a laser and analyzing the reflected light. It is used by autonomous vehicles to perceive their surroundings and is also applicable to several essential military capabilities—including chemical-biological sensing, precision targeting and communications, which increasingly rely upon laser-scanning technologies. One drawback of Lidar systems is that they require mechanical assemblies to sweep the laser ...

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