[Relationship Between Pain and Depressive Symptoms in Middle-aged and Older Chinese Adults: A Cross-Lagged Longitudinal Analysis]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanXia H +5 more
europepmc +1 more source
[Inductance calculation method for transcranial magnetic stimulation figure-8 coils Accounting for spatial mutual inductance]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiFan Y +9 more
europepmc +1 more source
[Multimodal assessment of lower limb muscle fatigue and variable stiffness impedance control method for exoskeletons]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLi R +7 more
europepmc +1 more source
, 2009 提出一种地平面刻蚀共面紧凑型微波光子晶体(PBG)的共面波导结构,介绍了微波光子晶体的基本单元结构,并设计出具有90°弯折的共面波导样品.使用矢量网络分析仪测试该结构的散射参数,测量结果显示,其传输特性比普通的共面波导在高频部分具有较大的提高.同时,相比于传统的三维微波光子晶体,该结构具有导体损耗小,加工工艺简单 ...
哈森其其格 +6 more
core
Haiyang gongcheng zhuangbei yu jishu采用研究连续系统振动问题的分析方法，对深水钻井隔水导管建立其弹性体连续系统的振动二阶偏微分方程。该方程考虑了隔水导管作为均质连续弹性体，在轴线方向上所受的作用力及约束条件，包括在海床井口处的约束、隔水导管张力器影响以及钻井平台在竖直方向上因波浪升沉而产生的影响。建立了杆件的纵向振动微分方程，并求解得出了隔水导管纵向振动的频率方程。研究结果显示，深水钻井隔水导管的纵向振动频率与隔水导管的截面面积、管体的杨氏模量、体积质量、隔水导管张力器的弹簧系数、波浪运动的波高、水深等6个主要参数有关 ...
刘贤权, 姜伟
doaj
[A method for measuring the thickness of biological tissues based on piezoelectric effect and deep learning]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiHu J +8 more
europepmc +1 more source
Jianzhu Gangjiegou Jinzhan对2根螺栓连接波纹腹板钢梁试件进行疲劳试验研究，获得了钢梁试件的疲劳性能指标以及失效破坏形态，分析了钢梁截面的应力分布以及循环荷载作用下的应力和刚度变化。汇总现有的焊接波纹腹板钢梁疲劳试验结果，比较分析了焊接钢梁与螺栓连接钢梁的疲劳寿命差异。采用有限元软件ABAQUS建立了螺栓连接波纹腹板钢梁的精细数值模型，根据疲劳试验结果验证了数值模型的准确性。利用经验证的数值模型，对疲劳破坏位置附近的应力分布进行有限元分析，结果表明螺栓孔边应力集中是疲劳裂纹萌生和引发疲劳破坏的主要原因。基于有限元分析结果，利用FE-
袁焕鑫, 李晗, 高立强, 王奥迪
doaj
[Bidirectional longitudinal associations of perceived stress with anxiety and depressive symptoms among medical students: A three<b>-</b>wave cross<b>-</b>lagged panel study]. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanChen Z, Shen L, Wang L, Xiao Q.
europepmc +1 more source
[Finite-element simulation and experimental investigation of nanosecond transcranial pulsed electric field propagation and distribution in a three-dimensional brain model]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiChen Y, Yao C, Yan F, Xiao P, Lu X.
europepmc +1 more source
[Family Environmental Unpredictability and Adolescent Physiological and Psychological Health: The Buffering Role of Positive School Climate]. [PDF]
Xin Li Xue Bao倩 高 +15 more
europepmc +1 more source