Results 151 to 160 of about 1,117,265 (213)

[Joint predictive effect of systolic blood pressure variability and sleep patterns on stroke]. [PDF]

open access: yesZhong Nan Da Xue Xue Bao Yi Xue Ban
Wang X   +5 more
europepmc   +1 more source

[<i>Qingda</i> Granules inhibit cerebral microvascular endothelial cell apoptosis in hypertensive mice by suppressing the P53 signaling pathway]. [PDF]

open access: yesNan Fang Yi Ke Da Xue Xue Bao
Lin Y   +8 more
europepmc   +1 more source

特高压钢管塔微风振动稳态幅值估计方法研究

open access: yes
钢管塔在我国特高压输电线路中应用广泛。在微风作用下圆形截面构件会形成稳定的卡门涡旋,从而导致构件发生微风振动,极易诱发螺栓松动、连接疲劳等问题,危及特高压钢管塔结构安全。针对特高压钢管塔,建立了斜材的力学模型,得到了斜材微风振动的弯曲振动微分方程,给出了其固有频率计算方法,研究了轴力大小和连接刚度对斜材横向弯曲振动频率的影响。运用能量平衡法,考虑风输入能量和螺栓滑移耗能,给出了斜材稳态振幅计算方法。针对SJ3021型特高压钢管塔斜材,研究了风速和连接刚度对斜材振动稳态幅值的影响 ...
江文强, 冯立言, 王彤, 霍仕康
core  

[Gout of the manubriosternal joints: A case report]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Gan D, Fu Q, Tang X, Li C, Shu Z.
europepmc   +1 more source

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