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163. Background and Current Status

Author

Liu, Yushan, primary, Abu-Rub, Haitham, additional, Ge, Baoming, additional, Blaabjerg, Frede, additional, Loh, Poh Chiang, additional, and Ellabban, Omar, additional

Published
2016
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173. Tumor microenvironment pH-responsive pentagonal gold prism-based nanoplatform for multimodal imaging and combined therapy of castration-resistant prostate cancer

Author

Tan, Haisong, primary, Liu, Yanlei, additional, Hou, Nan, additional, Cui, Shengsheng, additional, Liu, Bin, additional, Fan, Shanshan, additional, Yu, Guopeng, additional, Han, Chao, additional, Zheng, Dachao, additional, Li, Wenzhi, additional, Liu, Yushan, additional, Xu, Bin, additional, Wang, Zhong, additional, and Cui, Daxiang, additional

Published
2022
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175. Active power dynamic interval control based on operation data mining for wind farms to improve regulation performance in AGC

Author

Jia Chengzhen, Guo Dongjie, Wang Lingmei, Yin Shaoping, Meng Enlong, Liming Chen, Huming Jia, and Liu Yushan

Subjects
Wind power, Automatic Generation Control, business.industry, Computer science, 020209 energy, 020208 electrical & electronic engineering, Process (computing), Energy Engineering and Power Technology, 02 engineering and technology, Interval (mathematics), AC power, computer.software_genre, Turbine, Wind speed, Power (physics), Control and Systems Engineering, 0202 electrical engineering, electronic engineering, information engineering, Data mining, Electrical and Electronic Engineering, business, computer
Abstract

With the real-time changes of wind speed and operating conditions, it is a challenge to fully tap the active power regulation ability and improve the control performance of automatic generation control (AGC) in a wind farm (WF). The essence of tapping the active power regulation ability is to realise the coordination and complementarity of each wind turbine's (WT's) dynamic adjustment performance (DAP). To address this, a novel data mining method is developed to derive the internal relations between WTs’ output power and pitch angle, impeller speed and pitch angle during the power adjustment process, and a unified mechanism model is established to describe DAP of WTs. Based on the discovered relationship between WTs’ DAP and its operating states, an active power distribution algorithm and a dynamic interval control method are proposed. Then, an active power dynamic interval control strategy that has been implemented using Java script in MyEclipse for WFs is further developed. The control strategy has been tested and applied in a 50 MW WF in northwest China. The preliminary results showed that the control strategy has improved the rapidity and accuracy of AGC in the WF.

Published
2020

178. Carbon Doping Triggered Efficient Electrochemical Hydrogen Evolution of Cross‐Linked Porous Ru‐MoO2 Via Solid‐Phase Reaction Strategy.

Author

Cai, Jialin, Yang, Jianye, Xie, Xin, Ding, Jie, Liu, Leyan, Tian, Wanyu, Liu, Yushan, Tang, Zhiyong, Liu, Baozhong, and Lu, Siyu

Subjects
DOPING agents (Chemistry), HYDROGEN evolution reactions, HYDROGEN, ELECTRONIC structure, OXIDATION-reduction reaction, ACID dyeing (Textiles), CERAMICS
Abstract

The defect‐free structure of Mo‐based materials is a "double‐edged sword", which endows the material with excellent stability, but limits its chemical versatility and application in electrochemical hydrogen evolution reaction (HER). Carbon doping engineering is an attractive strategy to effectively improve the performance of Mo‐based catalyst and maintain their stability. Herein, we report a cross‐linked porous carbon‐doped MoO2 (C–MoO2)‐based catalyst Ru/C–MoO2 for electrochemical HER, which is prepared by the convenient redox solid‐phase reaction (SPR) of porous RuO2/Mo2C composite precursor. Theoretical studies reveal that due to the presence of carbon atoms, the electronic structure of C–MoO2 has been properly adjusted, and the loaded small Ru nanoparticles provide a fast water dissociation rate and moderate H adsorption strength. In electrochemical studies under a pH‐universal environment, Ru/C–MoO2 electrocatalyst exhibits a low overpotential at a current density of 10 mA cm−2 and has a low Tafel slope. Meanwhile, Ru/C‐MoO2 has excellent stability for more than 100 h at an initial current density of 100 mA cm−2. [ABSTRACT FROM AUTHOR]

Published
2023
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179. Polar O–Co–P Surface for Bimolecular Activation in Catalytic Hydrogen Generation.

Author

Zhang, Huanhuan, Zhang, Ke, Ashraf, Saima, Fan, Yanping, Guan, Shuyan, Wu, Xianli, Liu, Yushan, Liu, Baozhong, and Li, Baojun

Subjects
INTERSTITIAL hydrogen generation, BORANES, BOROHYDRIDE, ELECTRONEGATIVITY, ACTIVATION energy
Abstract

Boron hydrides release an abundant amount of hydrogen in the presence of a suitable catalyst. Accelerating bimolecular activation kinetics is the key to designing cost‐effective catalysts for borohydride hydrolysis. In this study, the bimolecular activation of a polar O–Co–P site demonstrated superior hydrogen‐generation kinetics (turnover frequency, TOF = 37 min−1, 298 K) and low activation energy (41.0 kJ mol−1) close to that of noble‐metal‐based catalysts. Through a combination of experiments and theoretical calculations, it was revealed that the activated dangling oxygen atom in the Co–O precursor effectively replaced via surface‐phosphorization because of strong electronic interactions between the dangling oxygen and P atoms. This substitution modulated the local coordination environment and electronegativity around the surface Co sites and formed a new polar O–Co–P active site for optimizing the activation kinetics of ammonia borane and water. This strategy based on bimolecular activation may create new avenues in the field of catalysis. [ABSTRACT FROM AUTHOR]

Published
2023
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180. Type II Left Pulmonary Artery Sling Associated with Double-Outlet Right Ventricle Diagnosed by Fetal Echocardiography and Postnatal Computer Tomography.

Author

Zhou, Dan, Yao, Longmei, Liu, Yushan, and Zeng, Shi

Subjects
FETAL echocardiography, PULMONARY artery, PRENATAL diagnosis, TOMOGRAPHY, COMPUTED tomography
Abstract

Introduction: Left pulmonary artery sling (LPAS) is a rare congenital vascular anomaly which can be isolated or associated with other malformations. Patients with LPAS usually have symptoms of airway obstruction. Case Presentation: We present a case of LPAS with double-outlet right ventricle diagnosed by fetal echocardiography at 33 weeks' gestation. Postnatal computed tomography echocardiography confirmed the diagnosis. Additional bronchial bridge and left main bronchial stenosis found by computed tomography led to a diagnosis of type II LPAS. Conclusion: It is crucial to trace pulmonary artery branches in the prenatal diagnosis. Prenatal diagnosis of LPAS will facilitate postnatal care and timely treatment. [ABSTRACT FROM AUTHOR]

Published
2022
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