木材损伤断裂过程声发射信号小波析取

Analysis and the Utilization of Lipid Regulating Agents in Beijing, Shanghai, Tianjin, Guangzhou, Hangzhou, and Chengdu

为了获取木材声发射信号波形,采用高速数据采集设备构建了一种多通道声发射信号采集系统,同时,基于LabVIEW软件设计了相应的信号小波包分析与处理系统。通过三点弯矩试验实际测量多种木材试样损伤与断裂信号,最后,针对不同种类信号的频谱特性得出木材在损伤断裂过程中的特点,实现了对木材损伤断裂过程的在线监控。研究结果表明：三点弯矩试验过程中信号呈现3种形态,可根据不同形态信号分析得出木材具体损伤断裂过程的阶段。

Objective： To analyze and compare the utilization of lipid regulating agents in Beijing, Shanghai, Tianjin, Guangzhou, Hangzhou, and Chengdu. Methods： Name, specification, prescription number, dispensary quantity and amount of lipid regulating agents were summarized. Results： Data in different cities were provided in detail as following. Conclusions： was the major group who are suffering from hyperlipidemia.Department of Cardiology was the department which used lipid regulating drugs most frequently, and followed by department of neurology and department of general medicine. Statins are still the major lipid regulating drugs, and Rosuvastatin maintains rapid growth.