An anti-counterfeit system and method for passive radio frequency label are disclosed, the system includes: the anti-counterfeit module of label, by the user interface, the production owner adopts the general international coding scheme to convert the true EPC code into the fake EPC code and the fak.....
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The invention provides a cascade controller with analog single-phase active power filter, which includes a control circuit and connected to the main circuit, the control circuit includes a first proportional integral controller, a multiplier, a subtractor, feedforward control , a second PI controlle.....
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本发明提供一种水基嵌段聚氨酯及其制备方法，其特征在于它含有由用于形成软段相的（Ａ）组组分的反应产物与用于形成硬段相的（Ｂ）组组分的反应产物所形成的预聚物在水中继续反应所得的聚合物。（Ａ）：催化剂０．０１－０．２重量份；聚醚或聚酯二元醇３０－１００重量份；芳香族或脂肪族二异氰酸酯５－３０重量份；扩链剂短链脂肪族二元醇２－１０重量份；（Ｂ）：芳香族二异氰酸酯５－２０重量份；交联剂三羟基多元醇０．１－２．０重量份；扩链剂短链脂肪族二元醇２－１０重量份；含羧基的短链脂肪族二元醇２－１０重量份；短链脂肪族有机叔胺类中和剂２－１０重量份。本发明还提供通过施用所述聚氨酯所得的具有防水、保暖、透湿性的材料。
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本发明涉及河豚毒素的生物合成方法，包括获取具有一种或多种弧菌的培养，如通过种菌培养；将弧菌培养和产生TTX有机体的组织提取物加入发酵器中的培养基中；和从所述发酵器分离纯化TTX。本发明的方法在约3-5天的时间得到大约0.5mg/L的TTX产出，TTX的纯度至少为90％
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A Chinese-medicinal pulse state sensor, a pulse state tester with closed-loop control for testing the pulse pressure, and its test method are disclosed. Said pulse state sensor has a probe and two ormore strain beams with both ends fixed to the surface of said probe and the semiconductor strain foil.....
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