Results 81 to 90 of about 4,580 (139)

低初始振动激发van der Waals分子HeI 2 振动预离解三维含时波包动力学研究

open access: yes, 1997
关大任 赵显 邓从豪 Z.John H.Zhang   +1 more
semanticscholar   +1 more source

[Advances in the assessment and management of voice disorders]. [PDF]

open access: yesLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Xu W.
europepmc   +1 more source

准零刚度隔振设计方法研究进展

open access: yesZhendong Ceshi yu Zhenduan
准零刚度(quasi‑zero stiffness,简称QZS)隔振通过引入刚度非线性,有效解决了传统线性隔振在承载能力与隔振带宽之间的固有矛盾,展现出优异的低频隔振性能。如何设计力学结构,使隔振器力‑位移曲线同时具备高静刚度与低动刚度特征,是实现准零刚度隔振的核心问题。围绕准零刚度隔振设计方法,首先,阐述了准零刚度隔振的基本原理,并根据刚度非线性化的实现途径,将传统设计方法归纳为几何运动非线性法、几何变形非线性法、磁非线性法以及应力‑应变非线性法;其次,介绍了基于非线性正刚度结构的新兴准零刚度设计方法,
doaj   +1 more source

[State-of-the-art in peripheral nerve injury diagnosis and therapy]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Sun J, Chen L.
europepmc   +1 more source

[Dynamic Effects of High-Altitude Exposure on Sleep and Mood States and the Underlying Neural Mechanisms]. [PDF]

open access: yesSichuan Da Xue Xue Bao Yi Xue Ban
He W   +12 more
europepmc   +1 more source

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