研究显示,常规临床检测高血压人群的心脏机能过程中,患有原发性高血压的病人左侧心室的Tei指数与心脏机能正常的人群相比偏大。尽管成年人体的Tei指数不会伴随年龄的增长出现较大变化,但是处于中老年阶段的人体Tei指数随着年龄的增长是否会出现大幅变动在医学界尚没有明确定论。本次实验围绕心脏左侧心室的Tei指数在老年女性原发性高血压患者左侧心室机能评价效果中的作用进行观察和分析,取得了一定成效,具体报道如下。
张芳 +5 more
doaj
针对传统部分包覆组合柱(PEC柱)中腹板易变形屈曲,以及与混凝土协同作用较弱、易分离等问题,提出一种将腹板形式由平钢板改为波形钢板的波形腹板PEC柱。考虑强弱轴方向、波形腹板方向、横向系杆间距、偏心距4个关键因素,设计10个波形腹板PEC柱试件并进行偏心加载试验。试验结果表明:波形腹板PEC柱试件在偏心受压下的破坏形态基本一致,均表现为受压侧翼缘鼓曲变形和混凝土压碎失效。试件在强轴方向的承载力较弱轴方向的承载力最大增幅为61.20%,延性最大增幅为63.06 ...
王威 +4 more
doaj +2 more sources
[Development of a liquid chromatography-tandem mass spectrometry method for steroid hormone detection during pregnancy and consistency analysis with chemiluminescence immunoassay]. [PDF]
Wu WX +5 more
europepmc +1 more source
[Performance validation and consistency assessment of three liquid chromatography-tandem mass spectrometry methods for detecting fat-soluble vitamins]. [PDF]
Li BC +8 more
europepmc +1 more source
[Eccentric kyphotic distraction reduction technique for treatment of lower cervical dislocation with locked facet joints]. [PDF]
Li Y +6 more
europepmc +1 more source
绕组变形是导致变压器故障的主要原因之一,频率响应分析法是一种常用的检测绕组变形故障的方法。文中针对实际应用中,因频率响应数据解释不足导致的绕组故障诊断效果不佳、抗噪性能差和故障程度指标与实际故障程度的单调性不良等问题,提出了基于动态时间DTW(dynamic time warping)规整路径与K最邻近算法(KNN,K-nearest neighbor)的变压器绕组状态判别法、基于DTW偏离度的变压器绕组故障程度表征法。通过在一台实际变压器及一台模型变压器上的运用 ...
谭珊 +4 more
doaj
[Establishment and international comparison of reference methods for glycated hemoglobin]. [PDF]
Wang M +6 more
europepmc +1 more source
[Positive cortical support reduction in treatment of trochanteric femur fractures: history in theory establishment and its inspiration for clinical innovations]. [PDF]
Chang S.
europepmc +1 more source
[U-shaped association between hematocrit and resting pulse oxygen saturation in Tibetan plateau population]. [PDF]
Guo Y, Li R, Laba C, Yan Q.
europepmc +1 more source
[A case report of benign paroxysmal vertigo of childhood complicated with patent foramen ovale and emotional disorder]. [PDF]
Wu D, Zeng X.
europepmc +1 more source

