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Structural Design and Dynamic Characteristics of Overloaded Horizontal Servo Cylinder for Resisting Dynamic Partial Load

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Chinese Journal of Mechanical Engineering 2019年第1期32卷 103-112页

作者： Linan Ma Qingxue Huang Lifeng Ma Qiangjun Ma Wenze zhang heyong Han Collaboration Innovation Center of Taiyuan Heavy Machinery Equipment Taiyuan University of Science and Technology Taiyuan University of Technology

When an output curve force is applied to a horizontal servo cylinder with a heavy load, the piston rod bears a dynamic partial load based on the installation and load characteristics, which significantly a ects the frequency response and control accuracy of the servo cylinder. Based on this partial load, increased friction can lead to cylinder bore scu ng, leakage, lack of output power, or even system failure. In this paper, a novel asymmetric static-pressure support structure is proposed based on the principle of hydrostatic support. The radial component force of a dynamic partial load is balanced by cooperation between the support oil cushion of the variable hydraulic pressure support structure, oil cushion of the supportive force, and the damper. Adaptive control of the servo cylinder piston rod, guide sleeve, and piston, as well as the cylinder oil film friction between lubricated surfaces is achieved. In this paper, theoretical design and analysis of the traditional hydrostatic bearing structure and novel structure are presented. A hydraulic dynamic shear scissor is used as a research target to derive a structural dynamic model. Comparative simulations are performed using Matlab Simulink. Additionally, flow field analysis of the novel structure is performed, which verifies the rationality and feasibility of the proposed structure and system.

关键词： Dynamic partial load Servo cylinder Asymmetrical static-pressure support structure Bearing characteristics

The Effects of Unsaturated Factors on Ring C to Chemical Propertiesof Podophyllotoxin Analogues

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Journal of Chinese Pharmaceutical Sciences 2001年第2期10卷 81-84页

作者： heyong MaWeiyong zhangChunnian ShanghaiInstituteofPharmaceuticalIndustry 1320BeijingXiRoadShanghai200040

Podophyllotoxone, 4β-hydroxy-2,3-en-apopicropodophyllin, and 4-deoxy-4β-azado-2,3-en-apo-picropodophyUin can easily transform to 4-hydroxy-dehydropicropodophyUin, dehydroanhydropicropodophllyin and4-amino-dehydropicropodophyllin respectively in different conditions. These properties remind .us to be careful inhandling related compounds in similar conditions.

关键词：足叶草霉素类似物不饱和物质化学药品

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当今《诗经》研究之困境与心理学的思考

广东社会科学 2010年第1期 80-85页

作者：张敏申荷永复旦大学社会学博士后流动站博士后上海200433 广州市教育科学研究所副编审广州510250 复旦大学社会发展与公共政策学院教授、博士生导师上海200433

当今《诗经》研究面临的困境有《诗经》文本的不确定性、历史文献与"地下证据"难以取舍、《诗经》中诗歌的起源观点的不统一以及《诗经》研究能否达到客观性等疑惑。国外研究者采用认知诗学等方法论对《荷马史诗》进行的研究,有深远的... 详细信息

当今《诗经》研究面临的困境有《诗经》文本的不确定性、历史文献与"地下证据"难以取舍、《诗经》中诗歌的起源观点的不统一以及《诗经》研究能否达到客观性等疑惑。国外研究者采用认知诗学等方法论对《荷马史诗》进行的研究,有深远的借鉴意义,而从心理的客观性的视角来进行研究,可成为《诗经》研究的新思路。

关键词：《诗经》研究困境《荷马史诗》认知诗学心理的客观性

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黑塞与心理分析

学术研究 2007年第4期 44-48页

作者：张敏申荷永华南师范大学心理系

黑塞是1946年诺贝尔文学奖得主,一生获得文学奖项无数,为我们提供了深邃而富含心灵写意的作品,同时也为我们提供了20世纪经典的心理分析个案。他曾经是荣格及其学生的病人,经历过300余小时的心理分析。心理分析不仅帮助黑塞度过了心理危... 详细信息

黑塞是1946年诺贝尔文学奖得主,一生获得文学奖项无数,为我们提供了深邃而富含心灵写意的作品,同时也为我们提供了20世纪经典的心理分析个案。他曾经是荣格及其学生的病人,经历过300余小时的心理分析。心理分析不仅帮助黑塞度过了心理危机,并影响着黑塞重新省察生命的意义,为其文学创作提供了来源和契机。同时,黑塞对心理学分析的创造和发挥,也能够为当代心理分析的发展提供重要的启迪。

关键词：黑塞荣格心理分析原型

Interfacing nanoHPLC and ICP-MS with an in-column high pressure nebulizer for mercury speciation

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Interfacing nanoHPLC and ICP-MS with an in-column high press...

Graphene oxide as a stationary phase for metal speciation analysis using HPLC with ICP-MS detection

第五届全国原子光谱及相关技术学术会议

作者： heyong Cheng Wenwen zhang Yuanchao Wang Jinhua Liu College of Material Chemistry and Chemical Engineering Hangzhou Normal University

Metal speciation analysis of microsamples in biological and forensic fields is of importance to elucidate its toxicity,mobility and metabolic behaviors .This is usually achieved by nanoliter high performance liquid chromatography(nano HPLC) hyphenated with inductively coupled plasma mass spectrometry(ICP-MS) .An in-column high pressure nebulizer(ICHPN) was developed to facilitate sensitivity and separation efficiency of the sheathless *** ICHPN consisted of two concentric fused-silica capillaries with tapered tips via a PEEK tee,where C18 silica particles were packed in the tapered inner capillary based on keystone *** a heated single pass spray chamber with the addition of a makeup gas,the ICHPN was capable of optimizing the nebulization and transport efficiency *** ICHPN offered high sensitivities,low detection limits and good precisions at nanoflow *** with commercial nebulizers,the fabrication was simple,rapid,reproducible and *** implementing the ICHPN,we achieved rapid separation of four mercury species,i.e.,Hg and methyl-,ethyl-and phenyl-mercuric chloride,within 8.0 min with good *** present nanoHPLC-ICP-MS is a potential alternative to conventional HPLC-ICP-MS for mercury speciation,especially in samples of limited volume.

关键词： in-column high pressure nebulizer interface inductively coupled plasma mass spectrometry nanoliter high performance liquid chromatography mercury speciation

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Graphene oxide as a stationary phase for metal speciation an...

SO_4^(2-)/ZrO_2上异丁烷重构化反应机理的原位核磁共振研究

第五届全国原子光谱及相关技术学术会议

作者： heyong Cheng Wenwen zhang Yuanchao Wang Jinhua Liu College of Material Chemistry and Chemical Engineering Hangzhou Normal University

Graphene oxide(GO) exhibits huge specific surface area and rich π electrons,which facilitate wide applications in sample pretreatment,separation and *** work demonstrates GO as stationary phase for high performance liquid chromatography with inductively coupled plasma mass spectrometric detection(HPLC-ICP-MS) in elemental speciation analysis for the first *** shown in Scheme 1,inorganic mercuric and organomercuric compounds coordinate with thiosalicylic acid(TSA) to form Hg-TSA complexes,which are retained by GO owing to its strong π electron stacking toward *** anions of arsenic and selenium,and organoarsenicals are electrostatically attracted by aromatic quaternary ammonium cations in mobile phases whereas organoarsenicals can also be drawn by long alkyl groups in quaternary ammonium compounds owing to solvophobic *** aromatic quaternary ammonium compounds are of high affinity to GO because of strong π electron stacking,leading to effective retention of these As/Se anions on the GO based column.

关键词： Graphene oxide Stationary phase Metal speciation HPLC-ICP-MS

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催化学报 2010年第1期31卷 61-67页

作者：张丽岳斌钱林平贺鹤勇复旦大学化学系上海市分子催化和功能材料重点实验室先进材料实验室上海200433

采用原位魔角旋转固体核磁共振技术研究了2-13C-异丁烷在SO42-/ZrO2上的重构化反应机理,考察了反应温度和H2气氛对反应的影响.结果表明,反应初期,异丁烷在SO42-/ZrO2上的重构化反应以单分子机理为主,之后向双分子机理转变;反应温度的升... 详细信息

采用原位魔角旋转固体核磁共振技术研究了2-13C-异丁烷在SO42-/ZrO2上的重构化反应机理,考察了反应温度和H2气氛对反应的影响.结果表明,反应初期,异丁烷在SO42-/ZrO2上的重构化反应以单分子机理为主,之后向双分子机理转变;反应温度的升高有利于单分子机理向双分子机理的转变;H2的存在抑制了异丁烷的重构化反应,特别对其双分子机理的反应有较强的抑制作用.

关键词：硫酸氧化锆核磁共振异丁烷重构化

GaxCs(2.5-3x)H(0.5)PW12O40的固相法制备及其催化正丁烷异构化反应的活性(英文)

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催化学报 2011年第4期32卷 521-524页

作者：张丽岳斌冯素姣钱林平贺鹤勇复旦大学化学系上海市分子催化与功能材料重点实验室上海200433

利用室温固相法制备了一系列掺镓的钨磷酸铯盐催化剂GaxCs2.5-3xH0.5PW12O40(x=0.05,0.1,0.15).与钨磷酸铯盐相比,掺镓的钨磷酸铯盐催化剂的结构未产生变化,但其酸强度提高,在正丁烷异构化反应中催化活性增强,其中以Ga0.1Cs2.2-H0.5PW12... 详细信息

利用室温固相法制备了一系列掺镓的钨磷酸铯盐催化剂GaxCs2.5-3xH0.5PW12O40(x=0.05,0.1,0.15).与钨磷酸铯盐相比,掺镓的钨磷酸铯盐催化剂的结构未产生变化,但其酸强度提高,在正丁烷异构化反应中催化活性增强,其中以Ga0.1Cs2.2-H0.5PW12O40和Ga0.15Cs2.05H0.5PW12O40最为显著.

关键词：镓钨磷酸铯盐固相合成正丁烷异构化酸性

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海拉尔盆地坡折带成藏类型与勘探突破方向

石油学报 2006年第B12期27卷 7-13页

作者：董万百吴河勇齐玉林秦龙卜张恒发中国地质大学能源学院北京100083 大庆油田有限责任公司勘探开发研究院黑龙江大庆163712

以层序地层学等理论为指导,以LANDMARK工作站的SEISWORK-3D地震解释、GEOPROBE地震岩性圈闭识别和储层预测等技术为手段,对海拉尔盆地贝尔断陷贝西斜坡主要勘探目的层系进行了层序、体系域的划分及层间扇体的刻画,统一了全区层序及体系... 详细信息

以层序地层学等理论为指导,以LANDMARK工作站的SEISWORK-3D地震解释、GEOPROBE地震岩性圈闭识别和储层预测等技术为手段,对海拉尔盆地贝尔断陷贝西斜坡主要勘探目的层系进行了层序、体系域的划分及层间扇体的刻画,统一了全区层序及体系域的界限。应用坡折带理论,根据形态特征将贝西斜坡的坡折带划分为反向断阶型、简单弯折型、多级断折型和多级坡折型4种类型。坡折类型不同,其油气藏的形成和富集特征也不同:反向断阶型有利于构造油气藏的形成和富集;断折型和坡折型有利于构造-岩性油气藏的形成;简单弯折型有利于岩性油气藏的发育。通过乌东斜坡带与贝西斜坡带的类比研究,提出了海拉尔盆地中坡折带为下步勘探的突破方向。

关键词：海拉尔盆地坡折带成藏类型油气勘探突破方向