Results 121 to 128 of about 84,069 (128)

一种压电陶瓷和碳材料的复合制备方法

open access: yes, 2016
本发明提供的是一种压电陶瓷和碳材料的复合制备方法。采用顺丁烯二酸分别对压电陶瓷粒子与碳材料(碳纳米管、碳纤维或石墨烯等)进行表面修饰,利用顺丁烯二酸具有双头羧酸的特性,实现压电陶瓷和碳材料(碳纳米管、碳纤维或石墨烯等)的复合制备,以期提高其作为压电导电相的高分子复合材料阻尼性能。该技术弥补了现有在高分子材料中混掺压电相与导电相工艺的不足,降低了两相接触的随机性 ...
陈猛, 王育人, 冯亚菲, 姜恒
core  

基于环境参数模型的定电压MPPT控制算法研究

open access: yes, 2015
根据光伏电池模型和最大功率跟踪(MPPT)原理,提出了一种基于环境参数的最大功率工作点(MPP)电压模型,改进了固定电压跟踪法。该方法实现简单,可以快速稳定地找到MPP,解决了光伏电池跟踪效率和跟踪控制精度难以兼得的矛盾。实验证明,光伏电池环境参数模型演算合理,改进的固定电压跟踪法能快速准确地跟踪MPP ...
戴志威, 舒杰, 吴昌宏
core  

[Guidelines for the diagnosis and management of hepatic encephalopathy in cirrhosis]. [PDF]

open access: yesZhonghua Gan Zang Bing Za Zhi, 2018
Chinese Society of Hepatology   +1 more
europepmc   +1 more source

[Expert Consensus on the Diagnosis and Treatment of Bone Metastasis in Lung Cancer (2019 Version)]. [PDF]

open access: yesZhongguo Fei Ai Za Zhi, 2019
Youth Specialists Committee of Lung Cancer   +2 more
europepmc   +1 more source

[Guidelines of the European Respiratory Society and the European Society of Thoracic Surgeons for the management of malignant pleural mesothelioma]. [PDF]

open access: yesZhongguo Fei Ai Za Zhi, 2010
Scherpereel A   +19 more
europepmc   +1 more source

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