...获得左心房侧壁、下壁、前壁及后壁的应变率曲线,检测舒张早期左心房各壁的峰值应变率(SRe)、舒张晚期左心房各壁的峰值应变率(SRa)和收缩期左心房峰值应变率(SRS)。对比以上参数在各组间的区别及与左心房射血力(LAF)、左心房主动排空分数(LAAEF)的相关性。
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...《新疆医科大学》2007年硕士论文 期(contractile,CT)、充盈期(reservoir,R)和通道期(conduit,CD)的峰值应变率(peak strain rate,PSR),同时测量左房前后径(LAD)、室间隔(IVS)、左室后壁(LVPW)、二尖瓣口舒张早期峰值流速(E..
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分析了应变率对混凝土弹性模量、峰值应力时的应变、泊松比和混凝土吸能能力的影响。
The relationships between strain rate and the elastic modulus, critical strain, Poisson's ratio and energy absorption capacity of concrete are still studied.
用12个区域来测量收缩期圆周应变时间和应变率，并用应不峰值时间和应不率的标准差来表示心肌不同步。
Time to peak systolic circumferential strain and strain rate were measured in 12 segments, and myocardial dyssynchrony was expressed as the SD of time to peak strain and strain rate.
结论表明，在此应变率段花岗岩材料具有明显的应变率硬化效应，峰值应力前应力-应变曲线的跃进特性。
The results show that the granite has strain rate effect, hardening effect and jumping behaviors of stress-strain curve.
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