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Deep Learning-Based Automatic Detection and Evaluation on Concrete Surface Bugholes

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Computer Modeling in Engineering & Sciences 2022年第5期131卷 619-637页

作者： Fujia Wei Liyin Shen Yuanming Xiang xingjie zhang Yu Tang Qian Tan School of Management Science and Real Estate Chongqing UniversityChongqing400044China CMCU Engineering Co. Ltd.Chongqing400039China

Concrete exterior quality is one of the important metrics in evaluating construction project *** 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 *** paper presents a deep learning-based method for detecting concrete surface bugholes in a more objective and automatic *** bugholes are identified in concrete surface images by Mask *** evaluation metric is developed to indicate the scale of concrete *** 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 *** demonstration,a total of 273 raw concrete surface images taken by mobile phone cameras are collected as a *** test results show that the average precision(AP)of bughole masks is 90.8%.

关键词： Defect detection engineering concrete quality deep learning instance segmentation

Design and synthesis of novel water-soluble amino acid derivatives of chlorin p6 ethers as photosensitizer

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Chinese Chemical Letters 2019年第1期30卷 247-249页

作者： xingjie zhang Zhi Meng Zhiqiang Ma Junhong Liu Guiyan Han Fujia Ma Ningyang Jia Zhenyuan Miao Wannian zhang Chunquan Sheng Jianzhong Yao Department of Medicinal Chemistry School of Pharmacy Second Military Medical University Department of Pharmacy 455th Hospital of Chinese People’s Liberation Army Department of Radiology Shanghai Eastern Hepatobiliary Surgery Hospital Second Military Medical University

Eight new water-soluble amino acid conjugates 6 a-h of chlorin p6 ethers(5 a-d) were synthesized and preliminarily investigated for their in vitro PDT antitumor activity and structure-activity relationship(SAR). The results showed that all compounds exhibited much higher phototoxicity against tumor cells than talaporfin. SAR analysis indicated that PDT antitumor effect enhanced with the increase of carbon chain length of alkoxyl ether bonds at 3~1-position, and L-aspartic acid was superior to L-glutamic acid. In particular, the IC_50 values of most phototoxic compound 6 d were 0.20 mmol/L against A549 cell and0.41υmmol/L against B16-F10 cell, which individually represented 31-and 24-fold increase of antitumor potency compared to talaporfin, suggesting that it was a promising candidate photosensitizer(PS) for PDT applications due to its strong absorption at long wavelength, high phototoxicity, low dark cytotoxicity and good water-solubility.

关键词： Photodynamic therapy (PDT) Photosensitizer Silkworm excrement Chlorin P6 Antitumor

Constituents from leaves of Macaranga hemsleyana

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Chinese Herbal Medicines 2024年第3期16卷 481-486页

作者： Joseph Sakah Kaunda Jia Liu Yaojun Xu Yuansi Chen Chenfang Yue xingjie zhang Ruihan zhang Muhammad Amin Weilie Xiao Hongliang Li Xiaoli Li Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of EducationYunnan Characteristic Plant Extraction LaboratoryYunnan Provincial Center for Research&Development of Natural ProductsState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of PharmacySchool of MedicineChemical Science and TechnologyYunnan UniversityKunming 650500China Yunnan Key Laboratory of Pharmacology for Natural Products Haiyuan CollegeKunming Medical UniversityKunming 650500China

Objective:To study constituents of the leaves of Macaranga hemsleyana,and evaluate their inhibitory effects against NOD-like receptor thermal protein domain associated protein 3(NLRP3)inflammasome activation,and antiproliferative ***:The constituents were isolated and purified by column chromatography on MCI gel CHP20P/P120,silica gel,Sephadex LH-20,and *** structures of compounds were determined by 1D,2D NMR,and HR-ESI-MS *** inhibitory effect of compounds on inflammasome activation was determined by lactate dehydrogenase(LDH)*** antiproliferative activity was evaluated using MTT ***:The study led to the isolation of 23 compounds,including one new compound,identified as(2Z)-3-[4-(β-D-glucopyranosyloxy)-2′-hydroxy-5′-methoxyphenyl]-2-propenoic acid(1),together with 22 known compounds recognized as 1,4-dihydro-4-oxo-3-pyridinecarbonitrile(2),methyl 4-methoxynicotinate(3),4-methoxynicotinonitrile(4),1-(3-O-β-D-glucopyranosyl-4,5-dihydroxyphenyl)-ethanone(5),neoisoastilbin(6),isoastilbin(7),aromadendrin(8),neoastilbin(9),astilbin(10),quercitrin(11),neoschaftoside(12),apigenin 6,8-bis-C-α-L-arabinoside(13),vitexin(14),bergenin(15),scopoletin(16),glucopyranoside salicyl(17),koaburside(18),benzylβ-D-glucoside(19),icariside B5(20),roseoside(21),loliolide(22),and adenosine(23).The tested compounds did not show LDH inhibition nor antiproliferative ***:Compound 1 was a new *** 2 and 3 were obtained for the first time from natural *** 22 known compounds constituted of alkaloids(2–4,23),phenolics(5,15,17,18),flavonoids(6–14),coumarin(16),benzyl glycoside(19),and norsesquiterpenes(20–22).All the compounds,1–23,were revealed from *** for the first *** is the initial uncovering of molecules 1–10,12,13,17–19,and 23 from the genus *** isolated compounds,11,14–16,and 20–22 established taxonomic classification of *** in Euphorbiaceae *** were outstanding as

关键词： antiproliferative activity chemotaxonomic significance flavonoids glycoside Macaranga hemsleyana Pax et Hoffm NLRP3 inflammasome

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农村家庭劳动力外出的生产要素基础分析

中州学刊 2008年第5期 132-134页

作者：张兴杰张沁洁华南农业大学公共管理学院广东广州510642

从农村家庭所具有的生产要素基础,即人力资本和物质资本两个层面的五个自变量,对12个省份共2202户农村家庭的劳动力是否外出务工所进行的实证分析表明:家庭人力资本越足,家庭有劳动力外出务工的可能性越大;家庭土地类物质资本越足,家庭... 详细信息

从农村家庭所具有的生产要素基础,即人力资本和物质资本两个层面的五个自变量,对12个省份共2202户农村家庭的劳动力是否外出务工所进行的实证分析表明:家庭人力资本越足,家庭有劳动力外出务工的可能性越大;家庭土地类物质资本越足,家庭劳动力外出务工的可能性越小;有劳动力外出的不同家庭,虽受家庭生产要素的共同作用,但人力资本和物质资本的作用并非一样,人力资本是关键。在土地不具再生性的前提下,农业发展首先要保障农业劳动力的供给,但要相应控制家庭人口规模,因为农业劳动力与家庭人口规模之间并非正比关系。

关键词：家庭劳动力生产要素劳动力外流

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新农村建设中的农村收入差距问题

社会主义研究 2006年第3期 57-59页

作者：张兴杰杨慧华南农业大学公共管理学院

“收入差距”大小是衡量农村小康水平和新农村建设成效的重要指标;众多权威数据表明,目前农村收入差距过大,已到了令人担忧的程度;农村收入差距过大后果严重,必须采取切实可行的措施遏止农村收入差距继续拉大。

关键词：农村新农村小康收入差距

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公共服务均等化:制度障碍与发展理路

浙江社会科学 2011年第6期 26-32,155-156页

作者：张开云张兴杰华南农业大学公共管理学院副教授博士广州510642

当前,公共服务非均等不但存在于城乡之间和地区之间,更存在于社会不同群体之间,导致多样化的社会矛盾和不稳定。公共服务非均等有其深刻的制度根源与路径依赖性。推进公共服务均等化的思路应以民主政治制度变革创造有效的制度环境,以硬... 详细信息

当前,公共服务非均等不但存在于城乡之间和地区之间,更存在于社会不同群体之间,导致多样化的社会矛盾和不稳定。公共服务非均等有其深刻的制度根源与路径依赖性。推进公共服务均等化的思路应以民主政治制度变革创造有效的制度环境,以硬约束性法治制度安排为保障,以均等化体系建设为重点,以公共财政制度安排调整为支点,借助社会力量和市场力量,实现城乡之间、地区之间、不同社会群体之间均等地享有应有的公共服务。公共服务均等化体系建设需要系统规划和注重制度间的协调匹配性,形成制度合力,才能有效实现公共服务均等化战略。

关键词：公共服务均等化制度障碍发展理路

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农村教育:缩小农村居民收入差距的关键

东岳论丛 2009年第4期30卷 167-171页

作者：张兴杰谢小蓉华南农业大学公共管理学院华南农业大学经济管理学院广东广州510642

农村居民收入差距日益扩大已成为当前农村最突出的经济社会问题之一。本文利用笔者2007年对广东、黑龙江、浙江、湖南、四川等13个省的91个村开展农村居民贫富差距调查所获得的2331份有效问卷进行分析,研究表明,农村教育是缩小农村居民... 详细信息

农村居民收入差距日益扩大已成为当前农村最突出的经济社会问题之一。本文利用笔者2007年对广东、黑龙江、浙江、湖南、四川等13个省的91个村开展农村居民贫富差距调查所获得的2331份有效问卷进行分析,研究表明,农村教育是缩小农村居民收入差距的关键。如何缩小农村居民收入差距?一要加强农村教育的政策取向,二要创建适合农村特点的多元化人力资本投入机制,三是建立健全农村社会保障体系。

关键词：收入差距农村教育农村居民

民办学校成为农民工子女就学主渠道的原因、问题与对策分析--以东莞市为例

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中国行政管理 2010年第4期 100-104页

作者：张兴杰杨慧华中科技大学社会学系华南农业大学公共管理学院华南农业大学公共管理学院社会学系南京大学社会学系博士生广州510642

进城农民工子女的义务教育问题,充分折射出我国与户籍制度绑定的义务教育福利制度与城市化进程之间的矛盾。东莞市相关数据表明:民办学校已成为该市进城农民工子女就学的主渠道。本文结合调查与访谈资料,分析了进城农民工子女教育问题... 详细信息

进城农民工子女的义务教育问题,充分折射出我国与户籍制度绑定的义务教育福利制度与城市化进程之间的矛盾。东莞市相关数据表明:民办学校已成为该市进城农民工子女就学的主渠道。本文结合调查与访谈资料,分析了进城农民工子女教育问题产生的原因,探讨了由这一现象所引发的问题与导致的后果,并结合实际提出了相关对策。

关键词：进城农民工子女民办学校公办学校义务教育

Incremental Mining Item Sets Based on H-Mine and XML

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Incremental Mining Item Sets Based on H-Mine and XML