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Chinese Journal of Electronics 2018年第4期27卷 783-791页

作者： zhang Qingchuan ZUO Min CAO Qian CAO Caifeng BI Mingwen zhang ruifang Beijing Key Laboratory of Big Data Technology for Food Safety School of Computer and Information EngineeringBeijing Technology and Business University

Taking the technical requirements for the dynamicity and flexibility of software system in open network environment as cut-in points, this paper put forward a novel dynamic component model named Soft Man component(SMC) which was well-formed and *** then a distributed multi-task collaboration mechanism based on game theory in Soft Man component dynamic evolution system is put forward in order to maximize the utilization of computing resources and resolve multi-tasks collaboration problem. Three kinds of experiments are designed to test the feasibility, robustness and performance of distributed multi-tasks collaboration mechanism. Results show that distributed multi-tasks collaboration mechanism based on game theory has a higher success rate and accuracy with good algorithm stability and reliability.

关键词： Component model Open software system Distributed collaboration Multi-tasks Game theory

A Sensitivity Mapping Technique for Tensile Force and Case Depth Characterization Based on Magnetic Minor Hysteresis Loops

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Chinese Journal of Mechanical Engineering 2020年第6期33卷 93-104页

作者： Cunfu He Wenqiao Dou Xiucheng Liu Meng Yang ruifang zhang Faculty of Materials and Manufacturing Beijing University of TechnologyBeijing 100124China

In the nondestructive testing and evaluation area,magnetic major hysteresis loop measurement technology are widely applied for ferromagnetic material *** the characterization ability of major hysteresis loop measurement technology greatly varies as the evaluated target *** solve this limitation,magnetic minor hysteresis loops,which reflect the responses of ferromagnetic material magnetization in a systematic way,is *** by plenty of information carried by the minor loops,the sensitivity mapping technique was developed to achieve the highest sensitivity of minor-loop parameters to the nondestructively evaluated *** this study,for the first time,the sensitivity mapping technique is used to measure the tensile force in a steel strand and evaluate the effective case depth in induction-hardened steel *** method and procedures for the sensitivity mapping technique are given before experimental *** obtained experimental results indicate that the linear correlation between the induced voltage(or the magnetic induction intensity)and the tensile force(or effective case depth)exists at most of the locations in the cluster of minor *** obtained sensitivity maps can be used to optimize the applied magnetic field(or excitation current)and the analyzed locations at the minor loops for achieving the highest *** the purpose of tensile force measurement,it is suggested that the strand should be firstly magnetized to the near-saturation state and then restored to the remanent *** this way,the highest sensitivity is obtained as about 15.26 mV/*** for the induction-hardened steel rods,the highest sensitivity of magnetic induction intensity to the effective case depth occurs under low magnetic field conditions and the absolute value of the highest sensitivity is about 0.1110 T/*** indicates that if the highest sensitivity is required in the case depth evaluation,the induction-hardened steel rods are

关键词： Sensitivity mapping technique Magnetic minor hysteresis loop Tensile force Case depth

Improving analytic hierarchy process applied to fire risk analysis of public building

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Chinese Science Bulletin 2009年第8期54卷 1442-1450页

作者： SHI Long zhang ruifang XIE QiYuan FU LiHua State Key Laboratory of Fire Science University of Science and Technology of China Hefei 230027 China

The structure importance in Fault Tree Analysis(FTA) reflects how important Basic Events are to Top *** at alternative level in Analytic Hierarchy Process(AHP) also reflect its importance to general *** on the coherence of these two methods,an improved AHP is put *** this improved method,how important the attribute is to the fire safety of public building can be analyzed more credibly because of the reduction of subjective *** venues are very important public buildings in *** fire safety evaluation of them will be a big issue to *** AHP is a useful tool to the safety evaluation to these Olympic venues,and it will guide the evaluation in other areas.

关键词：改进层次分析法公共建筑风险分析消防安全评价火灾奥运场馆故障树分析安全性评价

Duality for Multiobjective Bilevel Programming Problems with Extremal-Value Function

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Journal of Mathematical Research with Applications 2015年第3期35卷 311-320页

作者： Haijun WANG ruifang zhang Department of Mathematics Taiyuan Normal University

For a multiobjective bilevel programming problem(P) with an extremal-value function,its dual problem is constructed by using the Fenchel-Moreau conjugate of the functions *** some convexity and monotonicity assumption... 详细信息

关键词： multiobjective optimization bilevel programming problems conjugate duality convex programming composed convex functions

Experimental research of pEGFP-C1-wtp53 plasmid transfecting to murine glioma C6 cell by Ultrasound-mediated SonoVue microbubbles

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Experimental research of pEGFP-C1-wtp53 plasmid transfecting...

NH_(3)/CH_(4)/CH_(3)OH多孔介质燃烧特性模拟研究

中国超声医学工程学会第十三届全国超声心动图学术会议

作者： zhang ruifang liu haiyan Department of Ultrasound the First Affiliated Hospital of Zhengzhou University

Objective:To discusses the feasibility of ultrasound-mediated SonoVue microbubble irradiation enhanced pEGFP-C1-wtp53 gene transfection in glioma C6 cell,and optimize the parameters of ultrasound microbubbles concentration and plasmid ***:The in vitro cultured murine glioma C6 cells suspension could be divided into blank control group,the plasmid group,plasmid + ultrasonic group,ultrasonic +microbubble group,microbubble + plasmid group,plasmid + ultrasonic + microbubble *** 1 MHZ frequency,sound intensity 0.8 W/cm,20%of the empty,irradiation time 50 s,under the condition of 37 ℃ and 5%CO culture 24 h-48 h,with fluorescence microscope cell observing transfection rate,Trypan blue staining method detecting cell mortality,RT-PCR detecting of transfection cells wtp53 mRNA expression and MTT colorimetry to detect cell growth inhibition rate,flow cytometry instrument analysising of the cell cycle ***:Compared with blank control group,plasmid±ultrasound±microbubble group of cell survival rate decreased;Compared with each other group,the difference of the cell mortality rate isn’t statistically significant(all p>0.05).Plasmid±ultrasound±microbubble is the highest transfection efficiency group,the wtp53 mRNA expression of transfection cells increase obviously,flow cytometry instrument analysis of the cell cycle G0/G1 phase cell number increase;Compared with other experimental group and control group differences are statistically significant(all P<0.05).Conclusion:Ultrasound-mediated SonoVue microbubble irradiation enhanced pEGFP-C1-wtp53 gene transfection in murie glioma C6 cell,and wtp53 gene could be stably expression,thus inhibiting the growth of murie glioma cell,for the future of gene therapy provides a new method of transfection.

关键词： Ultrasound Microbubbles wtp53 gene Glioma Transfection

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中国电机工程学报 2024年第1期44卷 174-181,I0014页

作者：李亮张瑞方张扬张海热科学与动力工程重点实验室(清华大学能源与动力工程系) 北京市海淀区100084

氨(NH_(3))是一种无碳燃料,有望作为热能发电的替代燃料降低碳排放。多孔介质燃烧是一种可提高燃烧速率和稳定性的燃烧技术,实验表明其用于氨与反应性更强的燃料进行混燃可以同时提高燃烧强度和燃烧稳定性,但缺乏相应的模型研究。该文... 详细信息

氨(NH_(3))是一种无碳燃料,有望作为热能发电的替代燃料降低碳排放。多孔介质燃烧是一种可提高燃烧速率和稳定性的燃烧技术,实验表明其用于氨与反应性更强的燃料进行混燃可以同时提高燃烧强度和燃烧稳定性,但缺乏相应的模型研究。该文基于多孔介质导热强度高的特性,其内部燃烧满足一维假设,建立了一维多孔介质燃烧模型,对NH_(3)分别与甲烷(CH_(4))、甲醇(CH_(3)OH)掺混时的燃烧特性进行模型计算。计算结果显示多孔介质对两种混合燃料的作用不同,对于CH_(4)/NH_(3)燃料,多孔介质可以明显提高燃烧速率并降低富燃状态的NH_(3)残留;对于CH_(3)OH/NH_(3)燃料,提高燃烧速率和降低NH_(3)残留的效果较差;对两种混合燃料,可燃气体预混后直接送入多孔介质燃烧都增加一定的NOx排放,增加效果相同,而分级燃烧可以显著降低NOx排放。

关键词：多孔介质氨燃烧模拟研究燃烧速率 NOx排放

Synthesis of[(C_5H_5)Y(η~2-PzMe_2)(μ-PzMe_2)]_2 and [Y(η~2-PzMe_2)_2(μ-PzMe_2)(μ-THF)]_2 and the insertion of Me_2SiO into the Y-N bond

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Chinese Science Bulletin 2001年第9期46卷 723-726页

作者： ZHOU Xigeng, zhang Libei, RUAN Ruyi, zhang Lixin , CAI ruifang & WENG LinhongDepartment of Chemistry, Fudan University, Shanghai 200433, China State Key Laboratory of Elemental Organic Chemistry, Nankai University, Tianjin 300071, China Department of Chemistry Fudan University Shanghai China State Key Laboratory of Elemental Organic Chemistry Nankai University Tianjin China

3,5-Dimethylpyrazole (HPzMe2) reacted with (C5H5)3Y in THF to yield dinuclear complexes [(C5H5)Y-(η2-PzMe2)(μ-PzMe2)]2 ( I ) and [Y(η2-PzMe2)2(μ-PzMe2)-(μ-THF)]2 (II), revealing a new method for synthesizing tris(pyrazolate) complexes of lanthanide metals. The X-ray crystallographic analysis showed that complex II crystallizes in space group P 1 , with unit cell dimensions a = 1.0798(1), b = 1.0818(1), c = 1.1313(1) nm, a = 76.914(2)°,(B = 68.940(2)°, γ= 60.510(2)°, V = 1.0715(2) nm3, Z = 1. The final R factor is 0.0445. The investigation results showed that Me2SiO can only be inserted into the Y-N (bridging) bond of complex I to form [(C5H5)Y(η2-PzMe2)(μ-OSiMe2 PzMe2)]2 (Ⅲ), but cannot be inserted into the Y-N (bridging) bond of complex II due to the bulky crowding of the tetraple bridge structure.

关键词： yttrium pyrazolate crystal structure synthesis insertion cyclopentadienyl.

CT manifestations of childhood pancreatoblastoma

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World Journal of Pediatric Surgery 2022年第3期5卷 187-191页

作者： Meijun Sheng ruifang zhang XiaoHui Ma Haichun Zhou Surgical Intensive Care Unit Zhejiang University School of Medicine Children's HospitalHangzhouZhejiangChina Department of Radiology Zhejiang University School of Medicine Children's HospitalHangzhouZhejiangChina

Pancreatoblastoma is the most common type of malignant pancreatic tumor in children under 10 years old,accounting for 25%of pancreatic tumors.1 The imaging findings of pancreatoblastoma are non-specific,and most of tumors are lobulated masses with well-circumscribed or partially circumscribed margins,accompanied by necrosis and enhancing septations on contrast-enhanced CT.2 When a large tumor originates in the pancreas,pancreatoblastoma is one of the top differential diagnoses in children because of its relative frequency in this age group.

关键词： tumor pancreas finding

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氨燃料在燃烧设备中的应用及展望

洁净煤技术 2024年第5期30卷 46-55页

作者：张瑞方张扬张海清华大学能源与动力工程系、热科学与动力工程教育部重点实验室北京100084

在碳中和战略背景下,氨(NH_(3))作为一种无碳燃料受到广泛关注,近年来在全面开展氨燃料燃烧基础研究的同时,也在多种工业设备上开展应用研究和工程示范。介绍多种应用场景氨燃料经济性的最新进展,综述了氨燃料在燃煤锅炉等燃烧设备中的... 详细信息

在碳中和战略背景下,氨(NH_(3))作为一种无碳燃料受到广泛关注,近年来在全面开展氨燃料燃烧基础研究的同时,也在多种工业设备上开展应用研究和工程示范。介绍多种应用场景氨燃料经济性的最新进展,综述了氨燃料在燃煤锅炉等燃烧设备中的应用研究进展,重点关注各类应用研究在克服氨燃烧性质较差、NO_(x)排放高两大技术挑战上采取的措施,展望了氨燃料燃烧技术发展前景。工业应用研究表明,氨燃料可通过与原有燃料或H_(2)、甲烷等高活性燃料掺混燃烧提高燃烧强度,甚至可通过预热、催化分解及富氧等措施实现单独燃烧;在各类燃烧设备中降低NO_(x)最普遍有效方法是空气分级燃烧。内燃机中NH_(3)较易稳定燃烧,但NO_(x)排放偏高,控制NO_(x)排放是未来工作重点。NH_(3)燃料在燃气轮机的应用研究主要集中在数值模拟和少量小型燃机试验,实现NH_(3)稳定、低NO_(x)燃烧,但缺乏大型燃机工业研究。NH_(3)燃料在锅炉上应用研究集中在煤粉锅炉中氨煤混燃,我国近期在300 MW煤粉锅炉上开展最大掺NH_(3)热值比为35%的工业试验。发展更高掺NH_(3)比燃烧技术是该应用方向发展的重点。循环流化床(CFB)锅炉NH_(3)燃烧技术具有独特优势,建议重点关注。

关键词：氨燃料燃烧工业应用碳中和

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Comparison of Aortic Annulus Diameter Measurement between Multi-Detector Computed Tomography and Echocardiography:A Meta-Analysis

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Comparison of Aortic Annulus Diameter Measurement between Mu...