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This paper presents new improvements and real result of a stand-alone photovoltaic power system for LED lighting that was developed previously. The actual system, …
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A Better Method of Measuring Optical Performance. Move over P-V and make way for Strehl. The amateur astronomical community has become comfortable with a method of rating optical quality that is,
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Learn all of the sewing basics like how to gather fabric and how to thread a sewing machine. With so many sewing for beginners guides, along with easy tutorials and more, you will be ready to expand
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