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Effect of restoration technique on resistance to fracture of endodontically treated anterior teeth with flared root canals 预览
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作者 Sary S Borzangy Samah M Saker Walid A Al-Zordk 《生物医学研究杂志:英文版》 CAS CSCD 2019年第2期131-138,共8页
This study was designed to compare the impact of post and core systems on resistance to fracture of endodontically treated anterior teeth with flared root canals and to assess their fracture pattern. Sixty central inc... This study was designed to compare the impact of post and core systems on resistance to fracture of endodontically treated anterior teeth with flared root canals and to assess their fracture pattern. Sixty central incisors were cut horizontally 2 mm coronal to the cementoenamel junction(CEJ). After root canal therapy, teeth were assigned into 6 groups(n = 10 each) based on a post system and used as follows: Group C, non-flared root received size #1 glass fiber posts(Control);Group AP, flared root restored with anatomical post;Group RC, flared root restored with size #1 fiber post and cemented with thick layer of resin cement;Group CR, flared root restored with size #1 and reinforced with composite resin;Group CM, cast post-core;Group CP, CAD/CAM polymer-infiltrated ceramic post and core.Following post cementation, core build-up and crown insertion, the specimens were thermo-cycled up to 10,000 cycles(5 C/55 C;30 seconds dwell time, 6 seconds transition time) and then statically loaded at 1 mm/minute crosshead speed using a universal testing machine. One-way ANOVA and Tukey HSD post hoc test(α= 0.05) were used for data analysis. Group C recorded significantly higher resistance to fracture values [(826.9±39.1) N] followed by group CP [(793.8±55.6) N] while group RC yielded the lowest fracture resistance values [(586.7±51.4) N]. The resistance to fracture of wide root canals can be enhanced by using one-piece CAM/CAM post and core as an alternative to the use of either glass fiber post, relined with composite resin increasing the thickness of luting cement or the use of cast post and core system. However, this was an in vitro investigation and further in vivo studies are necessary. 展开更多
关键词 ANATOMICAL POST customized POST endodontically TREATED teeth flared ROOT CANAL
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Wooden Grave Posts of the Hungarians:A Hungaricum 预览
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作者 Laszlo Ferenc Novák 《美中外语:英文版》 2019年第3期125-140,共16页
The wooden grave-marker cult, which has evolved in the Protestant burial ritual, is characteristic of the Hungarian folk culture. Protestantism took root in the middle of the 16th century and its Calvinist branch, tha... The wooden grave-marker cult, which has evolved in the Protestant burial ritual, is characteristic of the Hungarian folk culture. Protestantism took root in the middle of the 16th century and its Calvinist branch, that became a Hungarian religion at the age of Turkish subjection, guaranteed the survival of the Hungarian nation. Protestants did not use crosses as grave-markers;they set up carved wooden posts instead of them from the end of the 17th century. The system of decorative elements illustrates the ancient culture of the Hungarians. This is proper anthropomorphism: The primary statue set up on the grave mound symbolizes human life and a secondary manifestation of it, i.e., a sphere motif symbolizes the human head;the trunk is decorated with star-, tulip-, and ring-shaped and even jardinière motifs. These decorative carvings change the carved wooden grave post into a “tree of life symbol”. The grave post cult of Protestant folk art flourished at the end of the 19th century and at the beginning of the 20th century. The use of “wooden headboards” and the masterpieces of folk art have spread since the middle of the 20th century. The decoratively carved wooden headboards were decorated with the decorative motifs on the wooden head posts. Wooden headboards appear at historical memorial places throughout the country and they symbolize various historical events. However, they are not identical with the wooden grave posts, which are the local specific manifestations of folk art: They are Hungaricum. 展开更多
关键词 grave-markers carved WOODEN GRAVE POSTS WOODEN headboard as national commemorative POST TREE of life Hungaricum
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基于“5个对接”的高职院校医学生实习管理督导的探讨 预览
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作者 聂振传 莫小卫 《教育教学论坛》 2019年第22期24-25,共2页
本文通过对高职院校医学生实习管理进行调查,了解他们对高职院校医学生实习管理教学督导、督导结果等问题的看法,构建实习生实习管理督导流程与质量监控环节的对接机制,以充分发挥教学督导在高职医学专业学生实习管理中的作用为目标,构... 本文通过对高职院校医学生实习管理进行调查,了解他们对高职院校医学生实习管理教学督导、督导结果等问题的看法,构建实习生实习管理督导流程与质量监控环节的对接机制,以充分发挥教学督导在高职医学专业学生实习管理中的作用为目标,构建符合高职院校医学实习教学的"五位一体"督导模式。 展开更多
关键词 医学生实习 管理督导 岗位
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近代江苏邮政研究述评 预览
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作者 王泽京 王芬 张继格 《科教导刊》 2019年第2期161-162,共2页
近代江苏邮政研究经历了一个从无到有,从少到多,有零散到较为系统的过程、产生了一些比较重要的学术成果。但在研究对象主体、研究时段和研究区域等方面亟待加强。
关键词 近代 江苏 邮政 述评
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Insight into removal of dissolved organic matter in post pharmaceutical wastewater by coagulation-UV/H2O2
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作者 Feng Qian Mengchang He +2 位作者 Jieyun Wu Huibing Yu Liang Duan 《环境科学学报:英文版》 SCIE EI CAS CSCD 2019年第2期329-338,共10页
The removal of four dissolved organic matter (DOM) fractions, non-acid hydrophobics, hydrophobic acids, hydrophilics and transphilics, was achieved by coagulation-UV/H2O2 oxidation in post-pharmaceutical wastewater (P... The removal of four dissolved organic matter (DOM) fractions, non-acid hydrophobics, hydrophobic acids, hydrophilics and transphilics, was achieved by coagulation-UV/H2O2 oxidation in post-pharmaceutical wastewater (PhWW). Coagulation with Polyferric chloride (PFC), Polymeric ferric sulfate (PFS) and Polymeric aluminum ferric chloride (PAFC) was studied separately to evaluate the effects of the initial pH and coagulant dosage. The coagulation-UV/H2O2 oxidation method resulted in much higher reduction rates for dissolved organic carbon (DOC) (by 75%) and UV254 (by 92%) than coagulation or UV/H2O2 oxidation alone. The proportion of non-acid hydrophobics, hydrophobic acids, transphilics and hydrophilics removed by coagulation was 54%, 49%, 27% and 12 %, while the combined treatment removed 92%, 87%, 70% and 39%, respectively. Parallel factor analysis (PARAFAC) of fluorescence measurements revealed that the humic-like fluorescent component C4 showed the highest removal (by 44%) during the coagulation stage. After coagulation-UV/H2O2 treatment, the humic-like fluorescent component C3 had the highest removal (by 72%), whereas xenobiotic organic fluorescent components C1 and C4 remained recalcitrant to decomposition. Significant correlations (R2 >0.8) between C1 and the hydrophobic acids and non-acid hydrophobics suggested the possibility of using fluorescence spectroscopy as an effective tool to assess variations in DOM fraction treatment efficacy in coagulation-UV/H2O2 systems. After the combined treatment, toxic inhibition of cellular activity by post PhWW decreased from 88% to 47% and biodegradability increased from 0.1 to 0.52. 展开更多
关键词 POST PhWW COAGULATION UV/H2O2 PARAFAC DOM FRACTIONATION Toxicity
Multiple Roles of HIV-1 Capsid during the Virus Replication Cycle
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作者 Mariia Novikova Yulan Zhang +1 位作者 Eric O. Freed Ke Peng 《中国病毒学:英文版》 CAS CSCD 2019年第2期119-134,共16页
Human immunodeficiency virus-1 capsid(HIV-1 CA) is involved in different stages of the viral replication cycle. During virion assembly, CA drives the formation of the hexameric lattice in immature viral particles, whi... Human immunodeficiency virus-1 capsid(HIV-1 CA) is involved in different stages of the viral replication cycle. During virion assembly, CA drives the formation of the hexameric lattice in immature viral particles, while in mature virions CA monomers assemble in cone-shaped cores surrounding the viral RNA genome and associated proteins. In addition to its functions in late stages of the viral replication cycle, CA plays key roles in a number of processes during early phases of HIV-1 infection including trafficking, uncoating, recognition by host cellular proteins and nuclear import of the viral preintegration complex. As a result of efficient cooperation of CA with other viral and cellular proteins, integration of the viral genetic material into the host genome, which is an essential step for productive viral infection, successfully occurs. In this review, we will summarize available data on CA functions in HIV-1 replication, describing in detail its roles in late and early phases of the viral replication cycle. 展开更多
关键词 Human IMMUNODEFICIENCY virus-1 (HIV-1) CAPSID (CA) Assembly Post ENTRY UNCOATING and nuclear IMPORT Inhibitor
基于岗位能力的项目化教学在纺织品生态与安全性能检测课程中的实践 预览
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作者 李颖 葛俊伟 《纺织科技进展》 CAS 2019年第4期58-59,62共3页
纺织品生态与安全性能检测是纺织品检验与贸易专业人才培养方案依据岗位能力要求新增的一门专业核心课程,课程教学设计全部依据生态纺织品检测岗位对应的工作内容和岗位所需的工作能力,课程考核采用过程考核为主,知识考核和实践考核并重... 纺织品生态与安全性能检测是纺织品检验与贸易专业人才培养方案依据岗位能力要求新增的一门专业核心课程,课程教学设计全部依据生态纺织品检测岗位对应的工作内容和岗位所需的工作能力,课程考核采用过程考核为主,知识考核和实践考核并重,达到了较为满意的效果。 展开更多
关键词 岗位 项目化 课程设计 考核
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Functionalized Polyphosphoester via Living Ring-opening Polymerization and Photochemical Thiol-ene Click Reaction
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作者 WANG Ying WANG Qiliao +3 位作者 HOU Liman ZHOU Mingdong DONG Dewen ZHANG Ning 《高等学校化学研究:英文版》 SCIE CAS CSCD 2019年第2期340-344,共5页
Poly(ethylene phosphonate)was synthesized via the living ring-opening polymerization of cyclic phos-phonate monomer catalyzed by organocatalyst.The pendant vinyl ftmctionalities were employed to perform the pho-tochem... Poly(ethylene phosphonate)was synthesized via the living ring-opening polymerization of cyclic phos-phonate monomer catalyzed by organocatalyst.The pendant vinyl ftmctionalities were employed to perform the pho-tochemical click reactions wi&tMols.We demonstrated that both small thiol molecules and macromolecular thiols could be efficiently coupled into the PPE side chains,enabling the rapid and efficient functionalization of polyphos-phoesters(PPE). 展开更多
关键词 Cyclic PHOSPHONATE RING-OPENING polymerization THIOL-ENE click reaction Post modification
Early immune response in post endoscopic retrograde cholangiopancreatography pancreatitis as a model for acute pancreatitis 预览
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作者 Ivana Plavsic Ivana Zitinic +3 位作者 Vera Tulic Goran Poropat Marinko Marusic Goran Hauser 《世界荟萃分析杂志》 2019年第3期96-100,共5页
This opinion review summarizes comparison of clinical presentation and immunology of post-endoscopic pancreatitis and acute pancreatitis (AP) of other etiology. The rationale for this topic was found in studies that m... This opinion review summarizes comparison of clinical presentation and immunology of post-endoscopic pancreatitis and acute pancreatitis (AP) of other etiology. The rationale for this topic was found in studies that mention differences in clinical presentation between these entities, stating that severe form of AP after endoscopic retrograde cholangiopancreatography was more severe than AP of other etiology. Found difference in clinical presentation may have a background in different immunology that needs to be further investigated. 展开更多
关键词 INNATE immunity PANCREATITIS IMMUNOLOGY POST endoscopic retrograde CHOLANGIOPANCREATOGRAPHY PANCREATITIS
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基于岗位双创的高校创新创业教育模式的探讨 预览
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作者 宋松 夏春晓 +1 位作者 徐静 武杰 《赤峰学院学报:汉文哲学社会科学版》 2019年第5期158-160,共3页
近几年来,我国高等院校创新创业教育取得了显著的成果,各种创新创业比赛如火如荼地进行,好的创新创业项目不断涌现。但是,这些好的创新创业项目真正落地,取得成果的却很少。反思其原因,是因为创新创业教育属于素质教育的范畴,素质教育... 近几年来,我国高等院校创新创业教育取得了显著的成果,各种创新创业比赛如火如荼地进行,好的创新创业项目不断涌现。但是,这些好的创新创业项目真正落地,取得成果的却很少。反思其原因,是因为创新创业教育属于素质教育的范畴,素质教育要取得效果需要长时间的教育和实践,但高校开展的创新创业教育时间短,内容多和压力大,会导致教育的学生意识有了,思维有了,但实践能力却缺乏了。因此,结合学生实际和社会环境,提出基于岗位上的创新创业教育,此种双创教育是对我国现阶段高校创新创业教育内容的补充和完善。 展开更多
关键词 岗位 双创教育 探讨
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高职学前教育专业课程教学改革研究——基于课岗证赛融合视角 预览 被引量:1
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作者 杨云舒 《辽宁高职学报》 2019年第1期65-68,共4页
课、岗、证、赛融合是指职业教育与岗位要求之间的相互融合,学生通过课程学习,考取所需职业资格证书,参加专业技能大赛,掌握未来工作岗位所需具备的专业能力。通过分析高职院校学前教育专业课程教学现状,分析了当前存在的问题,并指出在... 课、岗、证、赛融合是指职业教育与岗位要求之间的相互融合,学生通过课程学习,考取所需职业资格证书,参加专业技能大赛,掌握未来工作岗位所需具备的专业能力。通过分析高职院校学前教育专业课程教学现状,分析了当前存在的问题,并指出在课岗证赛融合形式下,高职院校要注重“课程教学改革-岗位所需专业能力-职业资格考证能力-技能大赛能力要求”的相互融合,培养学生未来工作岗位所需能力。 展开更多
关键词 高职教育 课岗证赛 学前教育专业
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国内外医生助理岗位对比分析及启示 预览
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作者 曹璐璐 何梅 +1 位作者 崔丽君 李桂荣 《中国卫生质量管理》 2019年第2期62-65,共4页
医生助理有利于缓解医疗资源短缺问题,提高患者就医满意度,是使用现有资源创造价值的一种方式。文章从医生助理定义、岗位职责、准入条件、培养方式和管理等方面结合现有文献,对国内外医生助理概况进行了总结和分析,指出了其发展过程中... 医生助理有利于缓解医疗资源短缺问题,提高患者就医满意度,是使用现有资源创造价值的一种方式。文章从医生助理定义、岗位职责、准入条件、培养方式和管理等方面结合现有文献,对国内外医生助理概况进行了总结和分析,指出了其发展过程中的不足,启示我国应拓展医生助理服务范围,形成系统培养体系,制定相关政策法规,以优化医生助理执业环境,推动我国医生助理岗位工作向前发展。 展开更多
关键词 医生助理 岗位 职责 培养方式 护理质量
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Synthesis,physical properties,and annealing investigation of new layered Bi-chalcogenide LaOBiHgS3
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作者 于一 汪春昌 +4 位作者 李亮 李秋菊 程超 王舒婷 张昌锦 《中国物理B:英文版》 SCIE EI CAS CSCD 2019年第1期580-583,共4页
The transport and thermoelectric properties together with annealing of the new layered Bi-chalcogenide LaOBiHgS3 are studied. On the transport part, the insulating behavior of the as-grown sample is evidently depresse... The transport and thermoelectric properties together with annealing of the new layered Bi-chalcogenide LaOBiHgS3 are studied. On the transport part, the insulating behavior of the as-grown sample is evidently depressed by post annealing.A hump-like abnormality appears around 170 K. The thermoelectric performance of the sample is observably improved by the annealing, mainly because of the enhanced electrical conductance. The present results suggest that the physical properties of LaOBiHgS3 are sensitive to post annealing and the possible micro adjustments that follow, indicating the layered Bi-chalcogenide family to be an ideal platform for designing novel functional materials. 展开更多
关键词 THERMOELECTRIC material Bi-chalcogenide POST ANNEALING
Unit 8 Is there a post office near here? Section A(1a—2c)教学设计 预览
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作者 冯媛 王兰英(指导) 郑玲(指导) 《英语教师》 2019年第9期56-59,共4页
一、教学内容本堂课的教学内容是人教版新目标《英语》七年级(下)Unit 8 Is there a post office near here?Section A(1a—2c),课型为听说课。主要学习内容有两部分:一是使用there be句型说明某处是否有某物;二是学习where引导的特殊... 一、教学内容本堂课的教学内容是人教版新目标《英语》七年级(下)Unit 8 Is there a post office near here?Section A(1a—2c),课型为听说课。主要学习内容有两部分:一是使用there be句型说明某处是否有某物;二是学习where引导的特殊疑问句和本堂课出现的新介词,并用这些介词描述某物的具体地理位置。 展开更多
关键词 OFFICE POST 教学设计 IS 教学内容 学习内容 地理位置 七年级
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后"伊斯兰国"背景下完善我国反恐怖主义法治研究 预览
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作者 马陇平 《兰州大学学报:社会科学版》 CSSCI 北大核心 2019年第2期191-200,共10页
国际反“伊斯兰国”联盟是对“伊斯兰国”挑战现代国际关系秩序与现代民族国家主权这一极端意识形态的反击,“伊斯兰国”在生成国的消失已成定局,但是“伊斯兰国”在与“基地”组织从依从到脱离的发展过程中,夺得的国际恐怖主义领袖地... 国际反“伊斯兰国”联盟是对“伊斯兰国”挑战现代国际关系秩序与现代民族国家主权这一极端意识形态的反击,“伊斯兰国”在生成国的消失已成定局,但是“伊斯兰国”在与“基地”组织从依从到脱离的发展过程中,夺得的国际恐怖主义领袖地位的影响力不会消亡,因此在“伊斯兰国”背景下提前布局推动国际合作,形成打击恐怖主义国际共识,完善我国反恐怖主义法治建设,预防后“伊斯兰国”恐怖主义意识形态扩散显得尤为重要。从恐怖主义概念分歧产生的历史根源与国际意识形态矛盾根源入手,寻找以国际公约的方式推进国际反恐怖主义与反极端主义合作,并寻求实现普遍管辖权的契机,提出中国应针对未来可能出现的大规模回流人员做出相关法律应对预案设定,同时应尽快实现安全检查的法定化标准,以消除后“伊斯兰国”背景下恐怖主义与极端主义对我国恶性影响的可能性。 展开更多
关键词 后“伊斯兰国” 恐怖主义 反恐怖主义法 国际合作
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供给侧与产业协同视角下的中高本衔接标准构建研究——以市场营销专业为例 预览
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作者 李胜 李欣蕾 平建恒 《北京财贸职业学院学报》 2019年第1期55-60,25共7页
当前中高本职业教育衔接的难点未能有效突破,课程内容缺乏层次性,重复严重,难以符合分段培养、能力递进的现代职业教育体系建设要求,中高本职业教育的无缝对接未能真正实现。本文通过构建市场营销类标准岗位分类和分级体系、市场营销类... 当前中高本职业教育衔接的难点未能有效突破,课程内容缺乏层次性,重复严重,难以符合分段培养、能力递进的现代职业教育体系建设要求,中高本职业教育的无缝对接未能真正实现。本文通过构建市场营销类标准岗位分类和分级体系、市场营销类岗位能力要素项目、市场营销类岗位能力辞条进行分级描述,设计标准岗位能力说明书,进而构建中高本市场营销专业人才培养衔接标准理论框架,以期破解当前中高本职业教育衔接的难点,实现中高本职业教育的无缝对接。 展开更多
关键词 中高本 衔接标准 市场营销 岗位
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基于RSA算法的PHP网站用户登录数据加密研究 预览
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作者 王小洁 《太原学院学报:自然科学版》 2018年第2期56-59,共4页
PHP以自身特有的优势,已经成为当前WEB开发领域的主流技术之一,备受开发人员青睐。使用PHP开发WEB应用程序时,经常需要设计用户注册或登录界面,要求用户输入用户名和密码等个人信息,PHP开发人员应对这些用户信息进行正确的加密保护。用... PHP以自身特有的优势,已经成为当前WEB开发领域的主流技术之一,备受开发人员青睐。使用PHP开发WEB应用程序时,经常需要设计用户注册或登录界面,要求用户输入用户名和密码等个人信息,PHP开发人员应对这些用户信息进行正确的加密保护。用户信息数据在PHP中一般采用POST或GET传输方式,RSA算法能有效对POST、GET传输数据进行加密、不易破解,能有效保护用户信息在网络传输过程中不被泄露和拦截。文章也研究了使用RSA算法对用户登录数据进行加密、解密的代码实现方法。 展开更多
关键词 PHP RSA POST GET 登录加密
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预制复合保温墙体单面受火后轴压承载力试验研究 预览
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作者 付倩 朱筱俊 +4 位作者 梁书亭 杨建 李向民 许清风 高明珠 《东南大学学报:英文版》 EI CAS 2018年第2期220-228,共9页
为了研究内、外页钢筋混凝土墙板、EPS板及钢套筒连接件组成的预制复合保温墙体火灾后的轴压承载能力,对4个预制复合保温墙体试件(2个常温试件及2个火后试件)进行了火灾后轴压承载力试验.观察了其破坏形态、裂缝开展情况;测试了其轴压... 为了研究内、外页钢筋混凝土墙板、EPS板及钢套筒连接件组成的预制复合保温墙体火灾后的轴压承载能力,对4个预制复合保温墙体试件(2个常温试件及2个火后试件)进行了火灾后轴压承载力试验.观察了其破坏形态、裂缝开展情况;测试了其轴压承载力、墙体面外位移、混凝土及钢筋应变.试验结果表明:火后试件的抗压极限承载力均低于常温试件的极限承载力;保温层厚度40mm,降幅为20.8%,厚度为60mm,降幅为16.8%;火后墙体的最大平面外位移值明显比常温墙体大,在相同荷载作用下,保温层厚度越大,墙体的平面外位移越大;火后墙体的混凝土、钢筋应变总是比常温墙体的大,保温厚度较大墙体的混凝土、钢筋应变均大于保温层厚度较小墙体的应变. 展开更多
关键词 预制复合保温墙体 膨胀聚苯乙烯板 火灾 保温层 受火后 轴压性能
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普光智能气田岗位数据流分析方法 预览
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作者 陈惟国 易建锋 +3 位作者 张捍卫 付培晨 李涛 杨晓燕 《天然气工业》 CSCD 北大核心 2018年第10期47-51,共5页
岗位数据采集是数据资源中心建设的重要组成部分之一且直接关系到后者的质量和水平,普光气田数据采集过程中存在着各专业数据库异构建设、数据无法共享、标准不一、多头采集、冗余存储、管理困难等问题。为了实现面向生产岗位、全业务... 岗位数据采集是数据资源中心建设的重要组成部分之一且直接关系到后者的质量和水平,普光气田数据采集过程中存在着各专业数据库异构建设、数据无法共享、标准不一、多头采集、冗余存储、管理困难等问题。为了实现面向生产岗位、全业务链提供数据服务和应用,在岗位中实现数据采、存、管、用一体化的目标,基于中国石化勘探开发数据模型及源头数据结构设计,结合普光气田的实际业务,分析岗位业务关系、数据流业务流程和业务数据元素,以紧密相关的一组数据作为数据集合,分析数据的传递和相互间的作用,建立了满足普光智能气田建设要求的岗位数据流分析方法,形成了一套较为完善的资产化数据资源管理体系,并进行了现场应用验证。结论认为:①较之于传统的数据分析方法,普光智能气田岗位业务数据流分析方法创新了数据流向分析,以业务流程为驱动、岗位场景为验证,实现了岗位数据的统一采集、集中存储、共享使用和统一管理,取得了良好的应用效果;②该研究成果提供了技术路线、可行方法和标准模板,可推广复用。 展开更多
关键词 普光气田 智能化 岗位 数据流 数据集 分析方法 编码 应用 采存管用一体化
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Effect of organic amine alkali and inorganic alkali on benzotriazole removal during post Cu-CMP cleaning
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作者 Liu Yang Baimei Tan +5 位作者 Yuling Liu Baohong Gao Yilin Liu Chunyu Han Qi Wang Siyu Tian 《半导体学报:英文版》 EI CAS CSCD 2018年第12期218-222,共5页
Benzotriazole(BTA), an anticorrosion agent of slurry, is the main organic pollutant remaining after CMP of multilayer copper wiring, and also the main removal object of post CMP cleaning. The adsorption of BTA onto th... Benzotriazole(BTA), an anticorrosion agent of slurry, is the main organic pollutant remaining after CMP of multilayer copper wiring, and also the main removal object of post CMP cleaning. The adsorption of BTA onto the copper could form a dense Cu-BTA film, which makes the copper surface strongly passivated. According to this characteristic, quantitative analysis of BTA residue after cleaning is carried out by contact angle measurement and electrochemical measurement in this paper. A scanning electron microscope(SEM) with EDX was used to observe and analyze the BTA shape and elements. The efficiencies of organic alkali and inorganic alkali on the removal of BTA were studied. The corresponding reaction mechanism was also analyzed. The results show that the adsorption structure of Cu(I)-BTA cannot be destroyed in an alkaline environment with a pH less than 10; the effect of BTA removal by inorganic alkali is worse than that of the organic amine alkali with the coordination structure under the same pH environment; the FA/O Ⅱ chelating agent with the fraction of 200 ppm can effectively remove BTA residue on the surface of copper wafer. 展开更多
关键词 POST CMP CLEANING BENZOTRIAZOLE (BTA) organic AMINE ALKALI electrochemical measurement
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