Buying time in suspended animation

Article Abstract:

Many organisms are naturally able to slow or arrest their life processes and their suspended state confers protection from environmental conditions that would normally kill them, such as prolonged oxygen deprivation. Hydrogen sulfide, a chemical produced naturally by our bodies, blocks cells from using oxygen and triggers suspended animation in mice, and therefore acts as a natural regulator of cellular energy production that could be employed to induce a protective suspended state in humans.

Hydrogen Sulfide, Cellular control mechanisms, Cell regulation, Chemical properties

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Thwarting nuclear terrorism

Article Abstract:

An additional threat has arisen that a terrorist organization might acquire highly enriched uranium (HEU) that could build and detonate a rudimentary but effective atomic bomb relatively easy without even testing them. A high-level government attention and a comparatively small additional monetary investment could prove a long way toward solving the problem.

General services, Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Uranium Metal, Reprocessed Activated Uranium, Safety and security measures, Control, Storage, Uranium, Nuclear reactors, Nuclear terrorism

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Making silicon lase

Article Abstract:

Scientists have developed a hybrid approach for producing silicon-based laser that relies on adding a piece of gallium arsenide or indium phosphide to the top of a silicon substrate. The silicon electrophotonics might provide a near-term commercial path to a silicon-based laser.

Silicon, Electric properties, Laser beams, Optical properties, Gallium arsenide

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