A two-mode photonic crystal fiber includes a core of a substantially transparent core material. The core material has a core refractive index and a length, and has a core diameter. The fiber also includes a cladding region surrounding the length of core material. The cladding region has a first subs.....
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The invention relates to a method for cooling and drying enclosed environment by a direct-expansion air conditioner, comprising the following steps: 1. setting one preset value aiming at the enclosed environment and storing the values in memory of a control mechanism; 2. acquiring measurement values.....
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The present invention teaches methods and systems for transmitting signals in a building utilizing the reinforced steel bar structure in the building. The methods and systems allow the transmission and receipt of signals in residences and offices in older buildings while avoiding system reconfigurat.....
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