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15 results on '"Liu, Gongquan"'

12. A substation monitoring and warning system based on infrared technology and image separating

Author

Zheng Jianmin, Liu Gongquan, Lin Lihua, Chen Bing, and Liu Jian

Subjects
Knowledge-based systems, Electric power system, Tilt (optics), Infrared, Computer science, business.industry, Component (UML), Detector, Computer vision, Image processing, Artificial intelligence, business, Temperature measurement
Abstract

To find the defects of the apparatus in a substation in the early stage, an infrared temperature measurement based monitoring system is established. An infrared-visible hybrid detector consists of an uncooled infrared focal plane array detector and a visible light camera, the lenses of both are of the same specification. As a result, the graphs are exactly matched. The hybrid detector is implanted on a PAN/TILT, which is scanning in a pre-programmed manner. An image separating approach is introduced to identify each apparatus or each component of an apparatus (they are called as objects), with which, the temperature information can be collected in an object-oriented basis. A database of the temperature information of apparatus and their components are established, based on which, a knowledge-based system is established. With the proposed system, there is no need to transfer bulk infrared images all the time, instead, only the collected temperature information of the objects are transferred to the monitoring center. Not only the efficiency can be remarkably increased, but the defeats can also be automatically detected by the knowledge-based rules without need of experienced staffs. The practical application shows the feasibility and advantage of the proposed approach.

Published
2008

15. Molecular Deceleration Regulates Toxicant Release to Prevent Cell Damage in Pseudomonas putidaS16 (DSM 28022)

Author

Tang, Hongzhi, Zhang, Kunzhi, Hu, Haiyang, Wu, Geng, Wang, Weiwei, Zhu, Xiongyu, Liu, Gongquan, and Xu, Ping

Abstract

Flavin-dependent amine oxidases have received extensive attention because of their importance in drug metabolism, Parkinson’s disease, and neurotransmitter catabolism. However, the underlying molecular mechanisms remain relatively poorly understood. Here, combining the crystal structure of NicA2 (an enzyme in the first step of the bacterial nicotine degradation pathway in Pseudomonas putidaS16 (DSM 28022)), biochemical analysis, and mutant construction, we found an intriguing exit passage in which bulky amino acid residues occlude the release of the toxic product of NicA2, in contrast to other, related structures. The selective product exportation register for NicA2 has proven to be beneficial to cell growth. Those seeking to produce cytotoxic compounds could greatly benefit from the use of such an export register mechanism.

Published
2020
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