本发明涉及一种制备Ｌ－肉碱的方法，其包括如下步骤；步骤１（如图）步骤２（如图）其中，步骤１采用不对称催化氢化反应，步骤２采用相转移反应、碱性催化剂和低温反应条件，从而大大提高了产物Ｌ－肉碱的收率，总收率高达７０％
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The present invention disclosed a foot massage apparatus which comprises: a housing; a pair of replaceable footprint plates with holes arranged according to a particular foot massage pattern, which are placed on an upper plate of the housing; protrusions protruding from the holes of each replaceable.....
[Detail]
The invention relates to an FRP (fiber reinforce plastic) tube-concrete-steel tube combined tube tower comprising an inner steel tube, an FRP outer tube and a concrete layer, wherein the inner steel tube is formed by connecting a plurality of steel tube segments, the FRP outer tube is formed by conn.....
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Methods of preparing quinoline derivative compounds, and administering such compounds in the treatment of solid and non-solid tumors, notably on liver cancer.
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一种跌倒监测和预防系统包括：跌倒监测和预防设备、装有数据分析模型的服务器和电子接收终端。跌倒监测和预防设备包括依次连接的传感器单元、模数转换器、微控制器以及微控制器的外围电路和扩展模块。本发明公开的一种跌倒监测和预防方法通过综合分析运动数据、环境数据、生理参数、位置数据和图片等信息，能够实时监测佩戴者，特别是老年人是否处于跌倒或近于跌倒的危险状态，并发出报警信号。根据这些信息可以生成关于跌倒和近于跌倒事件的数量、频率、类型和时间的记录，看护人可以给患者提供更好的建议和预防方法。由于同时利用当前数据和以前记录的数据进行分析本系统能够更加精确的监测和预防跌倒事件的发生。
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