You selected: Engineering
From: Geophysical Research-Solid Earth
A small plastic strip can do “weight training” to effortlessly lifts many times its own weight, driven by cyclic changes in the humidity of the surrounding air. This strong “artificial arm” is based on the interaction between microgels and a layer of polycations that shrinks as it dries, according to a report presented by Canadian researchers in the journal Angewandte Chemie.
Anyone who has ever worked in a laboratory has seen them: magnetic stirrers that rotate magnetic stir bars in liquids to mix them. The stir bars come in many different forms—now including nanometer-sized. In the journal Angewandte Chemie, researchers from Singapore have now introduced chains made of 40 nm iron oxide particles that act as the world’s smallest magnetic stir bars, effectively stirring picoliter-sized drops of emulsion with a commercial magnetic stirrer.
Drinking Water from the Sea: Electrochemically mediated seawater desalination in microfluidic systems
A new method for the desalination of sea water has been reported by a team of American and German researchers in the journal Angewandte Chemie. In contrast to conventional methods, this technique consumes little energy and is very simple. This electrochemically mediated seawater desalination is based on a system of microchannels and a bipolar electrode.
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Jackets with built-in mobile phones, sports clothes that warn you when your heart rate gets too high, wallpaper with glowing patterns—these are not concepts from a science fiction movie, some of them are actually already available, and they may soon become commonplace. These applications require electrically conductive fibrous materials. Korean researchers have now developed a new process for rendering paper and textile fibers conductive with aluminum. Their report appears in the journal Angewandte Chemie.
From: Journal of Industrial Ecology
Making Colors from Black and White: Colorfast pigments made from amorphous arrays of silicon dioxide and carbon black
It is very annoying when colors fade over time, sometimes simply from exposure to light. In the journal Angewandte Chemie, Japanese scientists have now introduced a new type of colorfast, environmentally friendly pigment. These consist of submicrometer-sized silicon dioxide particles and carbon black and are simply sprayed on to the desire surface. The resulting color is tough and does not fade.
George E. P. Box talking about Statistical Methods
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“Salted” Catalysts for Chemical Energy Storage: Basic alkali–metal salts improve a catalyst for steam reforming of methanol
The storage of hydrogen in the form of methanol is a highly promising method for using excess energy produced by wind and solar power plants. However, this technology requires an effective catalyst for regenerating the hydrogen. German scientists have now introduced a new platinum catalyst for this reaction, known as the steam reforming of methanol, in the journal Angewandte Chemie. The secret of their success lies in a special coating made from molten basic alkali metal salts.
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Fuel cells are a highly promising means of producing electricity. However, the hydrogen they require is still largely obtained from coal, oil, or natural gas. Producing hydrogen from less expensive biomass is an attractive alternative, but has not produced sufficient yields to date. In the journal Angewandte Chemie, a team of American and Mexican researchers has now introduced a cell-free biosystem of thirteen enzymes that can produce hydrogen from xylose, one of the main components of plants, in yields of over 95 %.
John Wiley & Sons, Inc, announced today that the majority of Wiley’s journals in its open access publishing program now offers authors funded by The Wellcome Trust and Research Councils UK the opportunity to publish their articles under a Creative Commons Attribution CC BY license when paying an Article Publication Charge (APC).
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Inspired by Audio Cassettes: Economical nanostructured iron–cobalt catalysts for the Fischer–Tropsch synthesis
Audio cassettes make the production process for fuels less expensive: To produce nanoparticles made of inexpensive iron oxide cores with a very thin cobalt shell, an international team of researchers modified a method developed for the production of magnetic audio tapes. As the researchers report in the journal Angewandte Chemie, their particles are easily accessible on a large scale, and are excellent Fischer–Tropsch catalysts for the production of good diesel fractions.