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Start Over Author "Zhang, Guilin" Publisher elsevier bv
47 results on '"Zhang, Guilin"'

7. New empirical evidence from ancient foxtail millet seeds and panicles reveals phenotype divergence during its dispersal

Author

Zhang, Guilin, primary, Zhou, Xinying, additional, Li, Xiaoqiang, additional, Wang, Yongqiang, additional, Dang, Zhihao, additional, Li, Wenying, additional, Spate, Michael, additional, Shang, Xue, additional, Wang, Jing, additional, Sun, Shaobo, additional, Song, Jixiang, additional, Chen, Tao, additional, Betts, Alison, additional, Wu, Xianzhu, additional, Zhao, Keliang, additional, Liu, Huan, additional, Zhang, Shanjia, additional, Xu, Hai, additional, and Jiang, Hongen, additional

Published
2022
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10. Study of WO3/Pt hydrogen sensitive film fabricated by Sol-Gel method

Author

Wei Shuangjiao, Bian Zhenglan, Wang Xingquan, Miao Xiaokang, Zhang Guilin, Xue Liang, Hu Anduo, Li Gaofang, and Chu Fenghong

Subjects
Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2022

11. Performance of transmitted optical fiber hydrogen sensing system based on orthogonal demodulation method

Author

Shuangjiao Wei, Fenghong Chu, Zhenglan Bian, Liang Xue, Zhang Guilin, Anduo Hu, and Xingquan Wang

Subjects
Materials science, Optical fiber, Hydrogen, business.industry, chemistry.chemical_element, Optical power, Noise (electronics), Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, Optics, chemistry, law, Demodulation, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, business, Sensitivity (electronics), Refractive index, Hydrogen production
Abstract

A transmitted optical fiber sensing system based on orthogonal demodulation algorithm is used for hydrogen detection in this paper. WO3/Pt fabricated by sol–gel method was used as sensing material. WO3 film reacts with hydrogen by the catalysis of Pt and refractive index of the sensing film changed, by measuring the transmitted optical power the concentration of hydrogen can be detected. Orthogonal demodulation algorithm was used to demodulate the weak transmitted optical intensity signals. Compared with the traditional ratio-type transmitted optical fiber hydrogen sensing system, the noise reduced by 28 times. The limit of detection is 495ppm and with good repeatability and stability. In order to improve the sensitivity of the system, three pieces of sensing film were used to increase the interaction length of the sensing material with hydrogen and the sensitivity increased by 2.592 times. With the orthogonal demodulated technique and multi pieces of sensing film, high sensitivity, fast response and low cost hydrogen sensing system was implemented and is very promising for the monitoring of hydrogen leakage in the field of hydrogen production, transportation, and storage.

Published
2022

12. An active disturbance rejection control guidance law based collision avoidance for unmanned aerial vehicles

Author

Wendong Gai, Jing Zhang, Zhang Guilin, and Ning Zhang

Subjects
0209 industrial biotechnology, Computer science, 020208 electrical & electronic engineering, Aerospace Engineering, Inversion (meteorology), 02 engineering and technology, Collision, Active disturbance rejection control, Computer Science::Robotics, Nonlinear system, Stability conditions, 020901 industrial engineering & automation, Obstacle, Law, 0202 electrical engineering, electronic engineering, information engineering, Circle criterion, State observer
Abstract

In this paper, an active disturbance rejection control guidance law is proposed for the problem of unmanned aerial vehicle (UAV) collision avoidance. First, a linear time-varying collision avoidance model based on a collision cone is established. Then the active disturbance rejection control guidance law is designed to ensure the security of UAV collision avoidance. In addition, the stability of a nonlinear active disturbance rejection system with an extended state observer is proved by the circle criterion, and the stability conditions are used to design the guidance coefficients. A simulation system based on a six-degrees-of-freedom UAV model is used to demonstrate the performance of this guidance law. The results conclusively demonstrate that this method can achieve collision avoidance in the presence of sensor noise, an unknown acceleration of an obstacle, and wind disturbance. Moreover, the manoeuvring range of collision avoidance using this method is narrower than the collision avoidance method based on nonlinear dynamic inversion guidance.

Published
2018

23. Evaluation of SrSc0.175Nb0.025Co0.8O3-δ perovskite as a cathode for proton-conducting solid oxide fuel cells: The possibility of in situ creating protonic conductivity and electrochemical performance

Author

Zhu, Ankang, primary, Zhang, Guilin, additional, Wan, Tingting, additional, Shi, Tingting, additional, Wang, Hong, additional, Wu, Mingzai, additional, Wang, Chunchang, additional, Huang, Shouguo, additional, Guo, Youmin, additional, Yu, Hao, additional, and Shao, Zongping, additional

Published
2018
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26. Ritt-Wu's characteristic set method for ordinary difference polynomial systems with arbitrary ordering

Author

Zhang Guilin, Yuan Chunming, and Gao Xiaoshan

Subjects
Discrete mathematics, Polynomial, General Mathematics, ComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATION, Decomposition (computer science), Zero (complex analysis), General Physics and Astronomy, Wu's method of characteristic set, Mathematics, Matrix polynomial, Characteristic polynomial
Abstract

In this paper, a Ritt-Wu's characteristic set method for ordinary difference systems is proposed, which is valid for any admissible ordering. New definition for irreducible chains and new zero decomposition algorithms are also proposed.

Published
2009

30. Influence of implanted Fe on the Kerr effect of Co6Ag94 granular films

Author

Cai Yingwen, Wang Changzheng, Wei Lun, Li Jianguo, Wang Song-You, and Zhang Guilin

Subjects
Kerr effect, Materials science, Mössbauer effect, Magnetic moment, Annealing (metallurgy), Precipitation (chemistry), Mechanical Engineering, Analytical chemistry, Condensed Matter Physics, Crystallography, Mechanics of Materials, X-ray crystallography, Mössbauer spectroscopy, General Materials Science, Thin film
Abstract

A magneto-optical chip of Fe-(Co6Ag94) granular films was fabricated by using of combinatorial Fe ions implanting into co-sputtered Co6Ag94 films and 16 units with different Fe content were prepared via binary masking scheme. The structures and surface morphologies of as-prepared and annealed Fe-Co6Ag94 films were analyzed by X-ray diffraction and atomic force microscopy respectively. It reveals that the Co, Fe and FeCo granules precipitate, grow and then form nanoparticles embedded in the Ag matrix during annealing. In addition, the measurement of the magneto-optic polar Kerr effect shows that Kerr rotation increases with increasing Fe content, which contributes to the magnetic moment. Precipitation and growth of the magnetic granules during annealing also increase the Kerr rotation due to the size effects. Further, Mossbauer study confirms that the formation of granules with certain size plays a principal role in the enhancement of magneto-optic polar Kerr effect. (C) 2003 Elsevier Ltd. All rights reserved.

Published
2003

31. An anomaly of positron parameter appearing in the study of an electron brush-plated material — Is it possible to use positron to detect molecular hydrogen content?

Author

Zheng Wan-hui, Qin Yun-jie, Zhang Guilin, and Wang Jing-cheng

Subjects
Antiparticle, Materials science, Hydrogen, Proton, General Engineering, chemistry.chemical_element, Electron, Crystallographic defect, Positron, chemistry, Antimatter, Physics::Accelerator Physics, Physics::Atomic Physics, Atomic physics, Hydrogen embrittlement
Abstract

On account of the ease with which positron annihilation experiments may be made and the well-known manner in which positrons behave much in the way that hydrogen protons do, the positron technique is thus commonly used to study hydrogen-charging and hydrogen-absorbed metals and alloys. Indeed, the positron technique has been an indispensable and powerful tool to investigate the influence of hydrogen on microstructures and properties of materials, thus a lot of the related papers have been published. However, papers regarding the use of positrons to detect molecular hydrogen content are few in the literature. This is because hydrogen-charging of metallic materials is a quite complicated process. Generally speaking, when hydrogen-charging, the content of hydrogen increases but occasionally it becomes lower instead of higher with increasing charging time. In addition, positrons, after entering a material, are affected not only by the old defects and the newly generated defects, but by hydrogen proton screening as well. Therefore, the existence of certain relationships between the measured positron parameter and hydrogen content in the material has not been found. Among the curves of positron parameter as a function of charging time which appeared in publications, the one which has a wavelike characteristic was frequentlymore » seen. In this letter, the author found that the measured Doppler lineshape parameter happens to be roughly directly proportional to the molecular hydrogen content involved in a particular material.« less

Published
1994

41. Characterization of PM2.5 in the ambient air of Shanghai city by analyzing individual particles

Author

Yue, Weisheng, primary, Li, Xiaolin, additional, Liu, Jiangfeng, additional, Li, Yan, additional, Yu, Xiaohan, additional, Deng, Biao, additional, Wan, Tianmin, additional, Zhang, Guilin, additional, Huang, Yuying, additional, He, Wei, additional, Hua, Wei, additional, Shao, Longyi, additional, Li, Weijun, additional, and Yang, Shushen, additional

Published
2006
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