Search

Your search keyword '"Weng, Zhi"' showing total 594 results
Start Over Author "Weng, Zhi"
594 results on '"Weng, Zhi"'

107. Review of Research and Application of Fluid Flow Detection Based on Computer Vision

Author

Fengshan Bai, Ding Han, Yanling Lan, Zhong Zhaonan, and Weng Zhi

Subjects
Measurement method, Flow (mathematics), business.industry, Computer science, Fluid dynamics, Image processing, Computer vision, Artificial intelligence, Production efficiency, business, Automation, Displacement (fluid), Flow measurement
Abstract

As an important parameter in various industries such as metal processing, agriculture, and medicine, the measurement of liquid flow can not only help us ensure the quality of production, but also improve production efficiency. In recent years, the development of computer vision has driven the development of flow detection towards intelligence. As a non-contact, fast measurement, high degree of automation, and high-precision measurement method, image processing technology has gradually been applied to various industries. Many researchers have invested a lot of research work on flow measurement. The representative research and solutions are summarized for more than 20 years, and describes the six main methods used in the flow detection of each fluid. It includes the following aspects: obtaining the flow through the liquid level detection; measuring the volume change rate by detecting the contour of the droplet; detecting the flow through a water ruler; adding markers such as tracer particles and tracer fluid to the liquid; using the interframe displacement of the water surface texture method. The article points out that the accuracy of the flow measurement is mainly affected by the liquid environment, and there are still many problems in the selection of light sources and algorithm research, and the true non-contact has not been achieved. At the same time, the future research trends and development directions are given. Through a large number of literature reviews, a review of the detection of fluid flow is provided, which provides many ideas for the next topic of milk flow detection.

Published
2020

111. Synthesis and antitumor activity of benzophenone compound

Author

Zhou, Bei-Dou, primary, Wei, Rong-Rong, additional, Li, Jia-Li, additional, Yu, Zi-Han, additional, Weng, Zhi-Min, additional, Ruan, Zhi-Peng, additional, Lin, Jian, additional, Fang, Yuan-Yuan, additional, Xu, Gui-Fen, additional, and Hu, Dong-Bao, additional

Published
2021
Full Text
View/download PDF

129. Synthesis and antitumor activity of benzophenone compound.

Author

Zhou, Bei-Dou, Wei, Rong-Rong, Li, Jia-Li, Yu, Zi-Han, Weng, Zhi-Min, Ruan, Zhi-Peng, Lin, Jian, Fang, Yuan-Yuan, Xu, Gui-Fen, and Hu, Dong-Bao

Subjects
BENZENE derivatives, MYCOPLASMA, ANTINEOPLASTIC agents, CHEMICAL reagents, CELL lines
Abstract

Seven benzophenone compounds were synthesized in one or two steps, then their antitumor activity was evaluated. The total yields ranged from 9% to 44%. Compounds 3c–5c exhibited obvious antitumor activity. Among them, compounds 3c and 4c exhibited excellent and broad-spectrum antitumor activity. Compound 3c exhibited much stronger inhibitory activities against fourteen cancer cells than cisplatin. In particular, compound 3c exhibited stronger cytotoxicity against hepatocarcinoma SMMC-7721 cells than Taxol, with a half maximal inhibitory concentration (IC50) of approximately 0.111 μM. These results demonstrated that compounds 3c, 4c and 5c were very promising antitumor leads for further structural modification. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

133. Phage-Guided Targeting, Discriminative Imaging, and Synergistic Killing of Bacteria by AIE Bioconjugates

Author

He, Xuewen, primary, Yang, Yujun, additional, Guo, Yongcan, additional, Lu, Shuguang, additional, Du, Yao, additional, Li, Jun-Jie, additional, Zhang, Xuepeng, additional, Leung, Nelson L. C., additional, Zhao, Zheng, additional, Niu, Guangle, additional, Yang, Shuangshuang, additional, Weng, Zhi, additional, Kwok, Ryan T. K., additional, Lam, Jacky W. Y., additional, Xie, Guoming, additional, and Tang, Ben Zhong, additional

Published
2020
Full Text
View/download PDF

140. Design of Intelligent Control Medical Nursing Bed

Author

Jing-Yu Yang, Yu-Qi Yang, Cheng-Rui Gao, Shi-Yu Huan, Chen Zhe, and Weng Zhi

Subjects
Nursing, Computer science, Control (management), Intelligent control
Abstract

This article introduces an intelligent control medical nursing bed under the control of a single chip microcomputer. It can realize remote monitoring and complete any angle turning. Thus, it will not only be beneficial to recover the patients' condition and prevent the decubitus ulcer, but also ease off the pressure of the family members to take care of the patients.

Published
2018

147. An Improved Motion Detection Algorithm Based on ViBe

Author

Yun-xiao Ma, Qiu Shusheng, Zhang Su, Jiang Yufan, Weng Zhi, and Feng Jiawei

Subjects
Background subtraction, Artifact (error), Computer science, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Image processing, Motion detection, 02 engineering and technology, Similarity measure, 021001 nanoscience & nanotechnology, 01 natural sciences, 010309 optics, Background noise, Histogram, 0103 physical sciences, Noise (video), 0210 nano-technology, Algorithm
Abstract

ViBe (Visual Background Extractor) algorithm is a kind of fast and accurate background subtraction algorithm, which is universally applied in video monitoring. The only drawback is the moving target in the first frame would introduce an artifact called ghost. In order to solve this problem, an eliminating ghost algorithm was designed in this paper. The algorithm depended on the foreground and the adjacent background area histogram and similarity measure. Because dynamic background video was easily influenced by background noise and interference, morphological image processing method was used in this paper. Experiments results show that the improved algorithm can quickly solve the ghost, foreground noise and holes problem.

Published
2017

149. Syntheses of xanthone derivatives and their bioactivity investigation.

Author

Zhou, Bei-Dou, Weng, Zhi-Min, Tong, Yu-Gui, Ma, Ze-Tong, Wei, Rong-Rong, Li, Jia-Li, Yu, Zi-Han, Xu, Gui-Fen, Fang, Yuan-Yuan, and Ruan, Zhi-Peng

Subjects
*BIOCHEMISTRY, *ANTIFUNGAL agents, *LIPASES, *PANCREAS, *IN vitro studies, *EXPERIMENTAL design, *AMPHOTERICIN B, *CELL culture, *HETEROCYCLIC compounds, *EDIBLE mushrooms, *ANTINEOPLASTIC agents, *ANTIOXIDANTS, *NUCLEAR magnetic resonance spectroscopy, *PHENOMENOLOGY, *RESEARCH funding, *DESCRIPTIVE statistics, *CELL proliferation, *MASS spectrometry, *MOLECULAR structure, *BIOLOGICAL assay, *OXIDOREDUCTASES, *CELL lines, *CANDIDA albicans, *FREE radical scavengers, *THIN layer chromatography, *PHARMACODYNAMICS, *CHEMICAL inhibitors
Abstract

Sixteen substituted 1-hydroxy-3-methylxanthones were synthesized in one step. The yields ranged from 33 to 76%. Then, the antitumor, antioxidant, anti-tyrosinase, anti-pancreatic lipase, and antifungal activities of compounds 1–16 were evaluated. Compounds 10–12 and 14 inhibited tyrosinase and pancreatic lipase activity to a certain extent, respectively. Compound 16 exhibited obvious cytotoxicity against fifteen cancer cells, moderate antioxidant activity, and moderate inhibitory activity against Candida albicans. In particular, compound 16 exhibited strong inhibitory activity against A-549 and A549/Taxol cells. These results demonstrated that compounds 10–12, 14, and 16 are promising leads for further structural modification. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results