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苯乙烯产品储罐聚合物含量超标原因分析与对策 被引量:3
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作者 祁洪胜 杨克 《炼油技术与工程》 CAS 2023年第6期45-49,共5页
某炼化公司苯乙烯装置在2020年和2021年出现产品储罐聚合物含量超标、产品不合格的问题,对装置的正常生产和产品的出厂影响很大。经清罐检查,储罐罐底、罐壁及外部安全附件等均未发现明显的易导致聚合反应发生的因素。经多次讨论、分析... 某炼化公司苯乙烯装置在2020年和2021年出现产品储罐聚合物含量超标、产品不合格的问题,对装置的正常生产和产品的出厂影响很大。经清罐检查,储罐罐底、罐壁及外部安全附件等均未发现明显的易导致聚合反应发生的因素。经多次讨论、分析及排查发现:苯乙烯产品聚合物含量超标问题与储罐储存温度、储罐储量、苯乙烯产品在储罐中停留时间都有关系,是这几种因素综合作用的结果。根据前期分析结果,2022年夏季生产时对相应的工艺参数进行了调整:降低高温时期产品储罐储量、减少产品在储罐中停留时间等,并对储罐进行预防性清罐处理,整个夏季未出现储罐产品聚合物含量超标问题。 展开更多
关键词 苯乙烯 产品储罐 聚合物含量超标 储存温度 阻聚剂 储存时间 预防性清罐 循环水温度
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改性魔芋葡甘聚糖纳米晶对聚乙烯醇薄膜性能的影响 被引量:3
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作者 陈秀玲 高山俊 +2 位作者 沈春晖 齐宏生 刘洒文 《中国塑料》 CAS CSCD 北大核心 2020年第5期38-44,共7页
通过硫酸水解魔芋葡甘聚糖(KGM)得到魔芋葡甘聚糖纳米晶(NKGM),再表面接枝3-(三甲氧基硅丙基)十八烷基氯化铵,与壬基酚聚氧乙烯醚硫酸钠反应等过程得到改性KGM纳米晶类流体(NKGMf);然后采用溶液流延法制备了含NKGM和NKGMf的聚乙烯醇(PVA... 通过硫酸水解魔芋葡甘聚糖(KGM)得到魔芋葡甘聚糖纳米晶(NKGM),再表面接枝3-(三甲氧基硅丙基)十八烷基氯化铵,与壬基酚聚氧乙烯醚硫酸钠反应等过程得到改性KGM纳米晶类流体(NKGMf);然后采用溶液流延法制备了含NKGM和NKGMf的聚乙烯醇(PVA)薄膜;通过傅里叶变换红外光谱仪、透射电子显微镜、扫描电子显微镜、热失重分析仪、拉伸测试仪等对NKGM、NKGMf的结构和PVA薄膜的性能进行表征。结果表明,经改性后,NKGM的片状结构得以保留,在PVA基质中的分散性增加,薄膜的起始分解温度提高了23℃,拉伸强度提高了34.7%,其中,NKGMf的最佳含量为3%(质量分数,下同)。 展开更多
关键词 魔芋葡甘聚糖纳米晶 纳米类流体 聚乙烯醇 力学性能
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聚乳酸/聚丁二酸丁二酯扩链改性材料研究 被引量:3
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作者 刘洒文 高山俊 +2 位作者 沈春晖 齐宏生 陈秀玲 《工程塑料应用》 CAS CSCD 北大核心 2020年第3期7-13,共7页
以左旋乳酸(L–LA)为原料合成聚左旋乳酸(PLLA),再与及聚丁二酸丁二酯(PBS)共混,通过使用高效的反应型扩链剂2,2'–(1,3–亚苯基)–二恶唑啉(PBO)和4,4'–二苯基甲烷二异氰酸酯(MDI)合成新的嵌段聚合物。第一步利用PBO易与羧基... 以左旋乳酸(L–LA)为原料合成聚左旋乳酸(PLLA),再与及聚丁二酸丁二酯(PBS)共混,通过使用高效的反应型扩链剂2,2'–(1,3–亚苯基)–二恶唑啉(PBO)和4,4'–二苯基甲烷二异氰酸酯(MDI)合成新的嵌段聚合物。第一步利用PBO易与羧基反应而对脂肪醇呈惰性的特点,生成端基多为羟基的共混体系,并用酸值滴定法验证了PBO对羧基的反应选择性;第二步再加入易与羟基反应的MDI,使得分子链进一步增长,并且提高两相相容性。对产物分别进行了核磁共振谱、傅里叶变换红外光谱、扫描电子显微镜、差示扫描量热、热重分析、熔体流动速率及力学性能测试。结果表明,反应生成了酰胺基团,并验证了PBO对羧基的反应选择性,通过增容扩链,改善了PLLA/PBS的相容性、加工流动性和热稳定性。随着PBO和MDI加入量的增加,材料的拉伸强度和断裂伸长率呈先增大后减小的趋势,且冲击强度显著提高,改变了材料的脆性特征。 展开更多
关键词 聚乳酸 聚丁二酸丁二酯 扩链改性 复合材料
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深基坑智能联网监测与预警系统的研究及开发 被引量:24
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作者 齐红升 肖成志 +1 位作者 王子寒 孙重阳 《深圳大学学报(理工版)》 EI CAS CSCD 北大核心 2020年第1期97-102,共6页
基坑开挖会对支护结构及周围环境产生应力与应变,因此在工程建设中对基坑进行监测十分必要.为解决基坑监测信息化程度低、人工方式采集数据效率低的问题,采用C/S模式、C#编程语言、关系型数据库MySql、全球导航卫星系统、导轮式固定测... 基坑开挖会对支护结构及周围环境产生应力与应变,因此在工程建设中对基坑进行监测十分必要.为解决基坑监测信息化程度低、人工方式采集数据效率低的问题,采用C/S模式、C#编程语言、关系型数据库MySql、全球导航卫星系统、导轮式固定测斜仪和自主研发的太阳能自供电传感器,以无线传输的方式,开发一套深基坑智能联网监测与预警系统.该系统实现了信息集中管理,监测数据实时读取、自动存储查询、计算和分析,图表自动绘制、自动预警报警,具有数据预测、事故处理分析和快速生成报表的功能.该系统通过监测仪器自动采集基坑信息,并进行数据分析及预警,提升了监测效率和安全保障. 展开更多
关键词 基坑工程 基坑监测 基坑支护 数据库 信息化施工 无线传输 自动采集数据
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新工科背景下应用型高校概率统计课程的教学探索 被引量:3
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作者 亓洪胜 孙西超 《科教导刊》 2018年第18期118-119,共2页
本文以作者的教学实践为例,探讨了新工科背景下的概率统计课程教学,提出了:归纳总结,注重知识背景;问题驱动,强调思想方法;直观演示,引入数学软件;设计有趣案例,激发学生学习兴趣的教学方法等。
关键词 新工科 概率统计 教学
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大学男女生数学成绩的差异性分析——以蚌埠学院为例 被引量:2
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作者 亓洪胜 梅玉娟 马月红 《许昌学院学报》 CAS 2019年第5期5-7,共3页
以蚌埠学院的部分专业学生为研究对象,利用SPSS软件,采用独立样本t检验方法,针对大学男女生数学成绩进行分析,并对现象成因进行分析,提出有针对性的建议,为提高教育教学水平提供有益的借鉴.
关键词 数学成绩 T检验 性别差异
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Toward quantum unmanned systems
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作者 CHENG ShuMing qi hongsheng +3 位作者 SUN Yue LIU LiJun XIE ShaoRong REN Xiaoqiang 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2024年第7期2277-2280,共4页
1 Quantum information technology Quantum information technology utilizes physical systems at the microscopic level, such as photon, atom, ion, and superconducting, to accomplish information-processing tasks that are i... 1 Quantum information technology Quantum information technology utilizes physical systems at the microscopic level, such as photon, atom, ion, and superconducting, to accomplish information-processing tasks that are impossible for the classical macroscopic world. During the past decade, significant process has been achieved in the pursuit of quantum technology into practical applications,generating great research interest from various domains, with the potential to radically change our information infrastructure [1–3]. 展开更多
关键词 QUANTUM utilize GENERATING
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Algorithm Design and Approximation Analysis on Distributed Robust Game 被引量:1
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作者 XU Gehui CHEN Guanpu qi hongsheng 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2023年第2期480-499,共20页
This paper designs a distributed algorithm to seek generalized Nash equilibria of a robust game with uncertain coupled constraints.Due to the uncertainty of parameters in set constraints,the authors aim to find a gene... This paper designs a distributed algorithm to seek generalized Nash equilibria of a robust game with uncertain coupled constraints.Due to the uncertainty of parameters in set constraints,the authors aim to find a generalized Nash equilibrium in the worst case.However,it is challenging to obtain the exact equilibria directly because the parameters are from general convex sets,which may not have analytic expressions or are endowed with high-dimensional nonlinearities.To solve this problem,the authors first approximate parameter sets with inscribed polyhedrons,and transform the approximate problem in the worst case into an extended certain game with resource allocation constraints by robust optimization.Then the authors propose a distributed algorithm for this certain game and prove that an equilibrium obtained from the algorithm induces anε-generalized Nash equilibrium of the original game,followed by convergence analysis.Moreover,resorting to the metric spaces and the analysis on nonlinear perturbed systems,the authors estimate the approximation accuracy related toεand point out the factors influencing the accuracy ofε. 展开更多
关键词 APPROXIMATION distributed algorithm e-Nash equilibrium robust game
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Distributed Consensus-Based K-Means Algorithm in Switching Multi-Agent Networks 被引量:3
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作者 LIN Peng WANG Yinghui +1 位作者 qi hongsheng HONG Yiguang 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2018年第5期1128-1145,共18页
This paper discusses a distributed design for clustering based on the K-means algorithm in a switching multi-agent network, for the case when data are decentralized stored and unavailable to all agents. The authors pr... This paper discusses a distributed design for clustering based on the K-means algorithm in a switching multi-agent network, for the case when data are decentralized stored and unavailable to all agents. The authors propose a consensus-based algorithm in distributed case, that is, the double- clock consensus-based K-means algorithm (DCKA). With mild connectivity conditions, the authors show convergence of DCKA to guarantee a distributed solution to the clustering problem, even though the network topology is time-varying. Moreover, the authors provide experimental results on vari- ous clustering datasets to illustrate the effectiveness of the fully distributed algorithm DCKA, whose performance may be better than that of the centralized K-means algorithm. 展开更多
关键词 Consensus-based algorithm distributed K-means clustering multi-agent network switching topology.
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Vector Space Structure of Finite Evolutionary Games and Its Application to Strategy Profile Convergence 被引量:2
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作者 qi hongsheng WANG Yuanhua +1 位作者 LIU Ting CHENG Daizhan 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2016年第3期602-628,共27页
A vector space structure is proposed for the set of finite games with fixed nmnbers of players and strategies for each players. Two statical equivalences are used to reduce tile dimension of finite games. Under the ve... A vector space structure is proposed for the set of finite games with fixed nmnbers of players and strategies for each players. Two statical equivalences are used to reduce tile dimension of finite games. Under the vector space structure the subspaces of exact and weighted potential games are investigated. Formulas are provided to calculate them. Then the finite evolutionary games (EGs) are considered. Strategy profile dynamics is obtained using different strategy updating rules (SURs). Certain SURs, which assure the convergence of trajectories to pure Nash equilibriums, are investigated. Using the vector space structure, the projection of finite games to the subspace of exact (or weighted) potential games is considered, and a simple formula is given to calculate the projection. The convergence of near potential games to an c-equilibrium is studied. Further more, the Lyapunov function of EGs is defined and its application to the convergence of EGs is presented. Finally, the near potential function for an EG is defined, and it is proved that if the near potential function of an EG is a Lyapunov function, the EG will converge to a pure Nash equilibrium. Some examples are presented to illustrate the results. 展开更多
关键词 Evolutionary game Lyapunov function Nash equilibrium near potential ihmction potential.
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