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| 1 | Deep Learning-Based Automatic Detection and Evaluation on Concrete Surface Bugholes显示文摘Concrete exterior quality is one of the important metrics in evaluating construction project quality.Among the defects affecting concrete exterior quality,bughole is one of the most common imperfections,thus detecting concrete bughole accurately is significant for improving concrete exterior quality and consequently the quality of the whole project.This paper presents a deep learning-based method for detecting concrete surface bugholes in a more objective and automatic way.The bugholes are identified in concrete surface images by Mask R-CNN.An evaluation metric is developed to indicate the scale of concrete bughole.The proposed approach can detect bugholes in an instance level automatically and output the mask of each bughole,based on which the bughole area ratio is automatically calculated and the quality grade of the concrete surfaces is assessed.For demonstration,a total of 273 raw concrete surface images taken by mobile phone cameras are collected as a dataset.The test results show that the average precision(AP)of bughole masks is 90.8%. | Fujia Wei Liyin Shen Yuanming Xiang Xingjie Zhang Yu Tang Qian Tan | 2022 | Computer Modeling in Engineering & Sciences2022，，5： | 1 |
| 2 | Identifying risk factors of urban-rural conflict in urbanization: A case of China显示文摘 | Ann T.W. Yu Yuzhe Wu Bibo Zheng Xiaoling Zhang Liyin Shen | 2014 | Habitat International2014，，： | 1 |
| 3 | Dendritic cells maturation facilitated by group-adjustable lipopolysaccharide analogues synthesized via RAFT polymerization显示文摘Transforming immature DCs into mature state to activate cellular immunity is a critical step in initiating immunoprophylaxis and immunotherapy.Lipopolysaccharides(LPS)can promote DCs maturation by binding receptor on DCs surface,but their clinical application is limited due to biological toxicity.Although many LPS analogues have been developed,complex synthesis and purification hinder their practical application.Here,we propose a novel and simple strategy to synthesize LPS analogues with adjustable structural units.Using monomer units similar to the key functional groups of LPS,we synthesize LPS analogues with different group ratios by RAFT polymerization.The obtained analogues have little negative effect on cell viability.Compared with LPS,the analogues show greater promoting effect on DCs maturation.And the analogues can be applied to different scenarios since the degrees of promoting DCs maturation by LPS analogues with different group ratios are different.This strategy provides a new direction for synthesizing LPS analogues,and it has the potential to produce LPS analogues on a large scale with tunable promoting DCs maturation effect. | Xingyu Heng Ruyan Feng Lijuan Zhu Liyin Yu Gaojian Chen Hong Chen | 2022 | Chinese Chemical Letters2022，33，9： | 0 |
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