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340 results on '"Yang, Jiangtao"'

117. Sub-Wavelength Metal-Grating Polarizer Fabricated on a Flexible Substrate

Author

胡啸 Hu Xiao, 王健安 Wang Jian'an, 王银 Wang Yin, and 杨江涛 Yang Jiangtao

Subjects
Metal grating, Materials science, business.industry, law, Optoelectronics, Substrate (printing), Electrical and Electronic Engineering, Polarizer, business, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Sub wavelength, law.invention
Published
2020

119. Evaluation of Lucas-Kanade based optical flow algorithm

Author

Tang Jun, Liu Xiaochen, Liu Jun, Yang Jiangtao, Wang Linwei, Shen Chong, Wang Yubo, Xiong Yufeng, and Liu Xiaojie

Subjects
Lucas–Kanade method, Computer science, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Optical flow, ComputerApplications_COMPUTERSINOTHERSYSTEMS, Pyramid (image processing), Algorithm, Urban environment
Abstract

Since the performance of pyramid Lucas-Kanade (LK) based optical flow algorithm would be influenced by different environments, this paper evaluates the simulation accuracy of the pyramid LK algorithm in cities, plains and mountains, respectively. The simulation results show that the LK algorithm can maintain high precision under the large motion, and the flight strategy of UAV under different environment is given according to the algorithm’s accuracy, In order to ensure the high accuracy of the optical flow sensor in different environments. For example, in the urban environment, when the UAV’s velocity is 12m/s-l5m/s, the best altitude is 80m-l50m. Simulation verification experiments are carried out in different environments. The simulation results show that the proposed UAV flight strategy is generally correct.

Published
2018

131. Upgrading and practice of early warning mode of geological disaster special group combination in Zigong City.

Author

YANG Jiangtao, LI Bo, LI Boxuan, and LUO Lan

Subjects
NATURAL disasters, NATURAL disaster warning systems, GEOLOGY, RESEARCH, SUSTAINABILITY
Abstract

The traditional mass monitoring and prevention system has the problems of finding early warning, personnel inspection and deformation monitoring, while the scientific research professional monitoring equipment has the problems of high cost and high power consumption, which is difficult to promote. Zigong City adopts the universal geological disaster monitoring and early warning technology with low power consumption, low cost, data and real-time as the supplement of traditional monitoring and early warning to improve the monitoring and early warning ability of geological disasters; the geological disaster monitoring and early warning mode is composed of the traditional group measurement and prevention early warning mode, the professional monitoring and early warning mode of human technology combination, and the comprehensive monitoring and early warning and prediction of "three unified, two points and one assessment" The three-level transformation of the mode will further improve the effectiveness and sustainability of monitoring and early warning of geological disaster automation specialty. [ABSTRACT FROM AUTHOR]

Published
2020
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132. Light-Excited Antibiotics for Potentiating Bacterial Killing via Reactive Oxygen Species Generation

Author

Jiang, Qi, E, Fangjie, Tian, Jingxiao, Yang, Jiangtao, Zhang, Jiangyan, and Cheng, Yongqiang

Abstract

The irrational or excessive use of antibiotics causes the emergence of bacterial resistance, making antibiotics less effective or ineffective. As the number of resistant antibiotics increases, it is crucial to develop new strategies and innovative approaches to potentiate the efficacy of existing antibiotics. In this paper, we report that some existing antibiotics can produce reactive oxygen species (ROS) directly under light irradiation. Thus, a novel antibacterial photodynamic therapy (PDT) strategy is proposed by using existing antibiotics for which the activities are potentiated via light-activation. This antibiotic-based PDT strategy can achieve efficient bacteria killing with a low dosage of antibiotics, indicating that bacterial killing can be enhanced by the light-irradiated antibiotics. Moreover, the specific types of ROS produced by different antibiotics under light irradiation were studied for better elucidation of the antibacterial mechanism. The findings can extend the application of existing antibiotics and provide a promising strategy for treatment of bacterial infections and even cancers.

Published
2024
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146. Solar Autonomous-Positioning Method Based on Rayleigh Atmosphere Polarization Pattern and Its Implementation

Author

申冲 Shen Chong, 唐军 Tang Jun, 王晨光 Wang Chenguang, 潘梓文 Pan Ziwen, 朱志飞 Zhu Zhifei, 刘文耀 Liu Wen-yao, and 杨江涛 Yang Jiangtao

Subjects
Physics, symbols.namesake, Optics, business.industry, symbols, Electrical and Electronic Engineering, Rayleigh scattering, Rayleigh sky model, business, Polarization (waves), Atomic and Molecular Physics, and Optics
Published
2017

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