The invention discloses a thin-film phase shifter of a microwave filter network and a manufacturing method, wherein the phase shifter is formed by a substrate, a ferroelectric thin film, a surface electrode and a base electrode and has a multi-layer structure of a microwave filter network, and the m.....
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The utility model discloses a combined LED lamp holder, which comprises a connecting seat connected with a street lamp fastener, a main bracket connected with the connecting seat and a plurality of lamp components, wherein the lamp components comprise a radiation bracket and an LED component consist.....
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A use of radio frequency identification technology reference positioning system, comprising: a plurality of RFID reference tags, fixed to the coverage of the system within the fixture; plurality of RFID tag object, disposed on the object positioned want; plurality of mobile RFID reader, set on a mob.....
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A method for identifying a person using their finger-joint print including the outer skin around the proximal interphalangeal joint of a finger, the method comprising: capturing (10) an image of the finger-joint print of the person; extracting (12) a region of interest (ROI) based on a local convexi.....
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(-)-EGCG是最丰富的儿茶素，其被认为是化学预防及抗癌剂。然而，(-)-EGCG具有至少一个局限性：其生物利用度差。本发明提供了具有下列通式的化合物，其中R11、R12、R13、R21、R22、R2、R3和R4均各自独立地选自-H和C1-C10酰氧基；以及R5选自-H、C1-C10烷基、C2-C10烯基、C2-C10炔基、C3-C7环烷基、苯基、苯甲基和C3-C7环烯基，同时，最后提到的7个基团中的每一个都可用1到6个卤素原子的任意组合取代；R11、R12、R13、R21、R22、R2、R3和R4中至少有一个是-H，这些化合物被证实比其用作蛋白酶体抑制剂以减少肿瘤细胞生长的未被保护对应物更.....
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