Remarkable stability in perovskite solar cells Date: February 6, 2018 Source: DOE/National Renewable Energy Laboratory Summary: Researchers have created an environmentally stable, high-efficiency
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Mar 07, 2013 · The heavy proportion of older skilled-trade workers puts into focus more than just the pending retirement for baby boomers and oft-cited but rarely quantified gap between the skills
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10 days ago · A general officer is an officer of high rank in the army, and in some nations' air forces or marines.. The term "general" is used in two ways: as the generic title for all grades of
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