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开孔泡沫铜的压-压疲劳行为 被引量:1
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作者 杨洋 陈荐 +1 位作者 李聪 姜雪傲 《机械工程材料》 CAS CSCD 北大核心 2021年第7期17-21,共5页
对具有相同孔径的开孔泡沫铜进行单轴准静态压缩和压-压疲劳试验,分析开孔泡沫铜的压缩特性和疲劳行为,并讨论了疲劳失效方式及破坏机理。结果表明:开孔泡沫铜的压缩应力-应变曲线由弹性变形阶段、平台应力阶段、密实阶段3个阶段组成;在... 对具有相同孔径的开孔泡沫铜进行单轴准静态压缩和压-压疲劳试验,分析开孔泡沫铜的压缩特性和疲劳行为,并讨论了疲劳失效方式及破坏机理。结果表明:开孔泡沫铜的压缩应力-应变曲线由弹性变形阶段、平台应力阶段、密实阶段3个阶段组成;在压-压疲劳过程中开孔泡沫铜主要经历了疲劳损伤积累区、应变激增区和持续破坏区3个阶段,应力水平越低开孔泡沫铜的寿命越长;在剪切力作用下,开孔泡沫铜中间部位形成一条与水平方向存在一定角度的挤压带,随着累积应变的增加,挤压带中孔洞结构持续破坏而形成一条几乎水平的压溃带;开孔泡沫铜的疲劳失效机理为孔棱表皮脱落、颈缩、断裂以及棱柱结的开裂。 展开更多
关键词 开孔泡沫铜 压-压疲劳行为 孔棱 棱柱结
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Study on Immunochemical Assays for the Organophosphorus Insecticide Chlorpyrifos
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作者 WUGang HUANGYa-li +2 位作者 ZHUGuo-nian WUHui-ming licong 《Agricultural Sciences in China》 CAS CSCD 2004年第5期371-375,共5页
The anti-chlorpyrifos polyclonal antibodies were obtained by using the artificial immuneantigen to immune in New Zealands white rabbits. The enzyme-tagged antibodies wereprepared by coupling horseradish peroxidase (HR... The anti-chlorpyrifos polyclonal antibodies were obtained by using the artificial immuneantigen to immune in New Zealands white rabbits. The enzyme-tagged antibodies wereprepared by coupling horseradish peroxidase (HRP) to the purified antibody with themodified sodium periodate method. The indirect competitive enzyme linked immuno-sorbentassays (ELISA) and the HRP-tagged antibody direct ELISA (E-Ab) were established, respectively.The limit of detection (LOD) for the indirect ELISA and E-Ab were 0.0033 and 0.0042 gmL-1, respectively. The linear detection ranged well from 0.005 to 2.0 g mL-1. 展开更多
关键词 CHLORPYRIFOS ANTIBODY Immunochemical assays
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Preliminary Research on Intelligent Management and Control Platform Project of Smart Highway Police and Road Coordination
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作者 licong MENGYuwen YANGGang 《外文科技期刊数据库(文摘版)工程技术》 2022年第1期205-210,共6页
The Smart Expressway Police Coordination and Intelligent Management and Control Platform uses new generation of electronic information technologies, such as big data, artificial intelligence, mobile internet, internet... The Smart Expressway Police Coordination and Intelligent Management and Control Platform uses new generation of electronic information technologies, such as big data, artificial intelligence, mobile internet, internet of things and cloud computing, to fully sense the operation status of the highway, carry out effective data fusion analysis and prediction, and apply these information to the expressway command and control system, which can ensure the safety and smoothness of the expressway and create a high-quality, efficient, safe and smooth traffic environment. 展开更多
关键词 police and road coordination intelligent control accurate perception data fusion
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Research on the Office Management of Private Colleges and Universities in the New Situation
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作者 licong 《外文科技期刊数据库(文摘版)教育科学》 2022年第7期087-091,共5页
As the comprehensive management department of colleges and universities, the office of private colleges and universities plays an important role in the internal and external communication of colleges and universities.... As the comprehensive management department of colleges and universities, the office of private colleges and universities plays an important role in the internal and external communication of colleges and universities. With the acceleration of the development of private colleges and universities, the structure, level and quality of private colleges and universities are constantly improving, and the connotation and difficulty of office management in private colleges and universities are constantly improving. 展开更多
关键词 new situation private colleges and universities office management
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