, 1995 利用电解液电反射谱研究了In_(0.2)Ga_(0.5)As/GaAs短周期超晶格中微带电子态随电场的演化过程,不仅清楚地观察到弱场Franz-Keldysh效应和强场Wannier-Stark局域化效应,面且观察到了从弱场过度到强场过程中Franz-Keldysh效应和Wannier ...
江德生, 王若桢, 张耀辉, 刘伟
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[Neuroregulatory Mechanisms of Lung Cancer Progression and Clinical Treatment Challenges from the Perspective of Cancer Neuroscience]. [PDF]
Zhongguo Fei Ai Za ZhiWang N +7 more
europepmc +1 more source
[Dynamic changes and physiological regulation of common carotid artery blood flow during general anesthesia in elderly patients: a prospective study]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoLiu X, Wu J, Ye C, Wang E, Hu H.
europepmc +1 more source
, 1991 为了改善快速流化床底部空隙率径向不均匀分布，本研究在Φ90 mm的快速流化床上进行了实验，将其底部扩大至Φ180 mm，高1m。实验结果表明，底部扩大段可消除径向平均空隙率的不均匀分布。由于颗粒的加速运动，快速流化床底部的流体力学特性与其稳定段显著不同。底部加速段的压降由颗粒重量、颗粒的加速运动以及颗粒与壁面磨擦叠加成的，因此，不能直接用测得的压降计算加速段内的空隙率。本文在考虑了颗粒加速运动基础上，给出了快速流化床加速段内的空隙率与压力梯度的关系式 ...
华彬
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[Expert consensus on the clinical diagnosis and treatment of coagulation disorders related to liver disease]. [PDF]
Zhonghua Gan Zang Bing Za ZhiNational Clinical Research Center for Infectious Diseases +4 more
europepmc +1 more source
Gaoya dianqi柔性直流输电系统故障电流上升速度快、幅值大，现有的直流断路器（DCCB）故障切断速度、开断容量受到了极大的挑战。基于此，提出一种主要由换流支路和阻感限流支路所构成的直流限流器，利用换流支路将故障电流转移至阻感限流支路上，实现阻感限流，并通过吸能电阻达到加速故障电流清除、缓解直流断路器开断压力的目的。根据直流故障暂态特性，结合该阻感型直流限流电路与混合式直流断路器的配合策略，分阶段对该阻感型直流限流电路的工作原理进行理论分析，通过数学推导给出所提阻感型直流限流电路的参数设计原则。最后 ...
李鑫 +4 more
doaj
[Management of accidental tooth root displacement into the mandibular canal during tooth extraction]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiSu L, Zhao J.
europepmc +1 more source
[State-of-the-art in peripheral nerve injury diagnosis and therapy]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiSun J, Chen L.
europepmc +1 more source
[Sex-specific hemoglobin thresholds for oxygen saturation: A non-linear regression analysis based on Tibetan inpatients]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanGongjue Z, Mao Y, Dawa P, Laba C, Yan Q.
europepmc +1 more source
[Application and research progress of mandibular distraction osteogenesis in craniofacial microsomia]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiLi L, Zhang Z.
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