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RESEARCH ON THE FLOW RATE CHARACTERISTIC OF PNEUMATIC COMPONENT AND CIRCUIT

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RESEARCH ON THE FLOW RATE CHARACTERISTIC OF PNEUMATIC COMPON...

LD抽运的Nd^(3+):YAG-Cr^(4+):YAG组合单晶自调Q激光器的研究

第四届流体传动国际会议

作者： Zhao Ming Zhou Hong Chen Ying The state key lab of Fluid Power Transmission and Control, zhejiang university, hangzhou, P.R. china 31002. ** Festo (china) Ltd. Shanghai, P.R.china 201206

This paper at first deals with the mathematic model of a pneumatic system and analyses the effects of some important parameters to the results of dynamic simulation;secondly, discusses the measure methods of component sonic conductance;at last carries out the relationship between the value of circuit flow-rate characteristic and that of each component according to the experience and measurement results.

关键词： pneumatic sonic conductance critical pressure ratio measure mathematic model

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中国激光 2003年第6期30卷 481-484页

作者：陈军葛剑虹周涛沈永行浙江大学现代光学仪器国家重点实验室浙江杭州310027 浙江大学物理系浙江杭州310027

用激光二极管 (LD)连续抽运单体复合型Cr4+∶YAG Nd3 +∶YAG单晶微棒 ,获得重复频率为 10kHz ,脉冲宽度为 10ns的调Q激光输出。输出平均功率为 18mW 。

关键词：激光技术组合掺杂YAG激光器 LD抽运自调Q

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基于手绘草图的三维cad系统

计算机工程与应用 2004年第18期40卷 116-119页

作者：胡华强彭维刘袆玮叶修梓浙江大学计算机科学与技术学院 CAD&CG国家重点实验室杭州310027

Post-IMP界面是下一代用户界面的主要范式。该文研究并实现了一种新型的基于笔的手绘草图三维cad系统。实现手绘草图三维cad系统的关键是设计一个自然、合理、高效的草图语义表达与获取框架,它要着眼于解决用户在做什么和在哪里做这两... 详细信息

Post-IMP界面是下一代用户界面的主要范式。该文研究并实现了一种新型的基于笔的手绘草图三维cad系统。实现手绘草图三维cad系统的关键是设计一个自然、合理、高效的草图语义表达与获取框架,它要着眼于解决用户在做什么和在哪里做这两方面的问题。该文详细地讨论了草图语义表达和获取框架的设计思路及实现方法,并开发出一个原型系统,该系统以一支手写笔和一块手写板为交互输入设备,能够较自然高效地进行一些复杂的三维实体和三维场景设计。

关键词：三维cad系统基于草图的交互草图语义草图识别手势

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齿轮点蚀的多通道数据融合识别方法

振动．测试与诊断 2014年第1期34卷 63-68,190页

作者：熊炘杨世锡甘春标叶红仙浙江大学液压传动及控制国家重点实验室杭州310027 上海大学机电工程与自动化学院上海200072 杭州电子科技大学机械工程学院杭州310018

针对齿轮箱振动信号中混杂其他零部件振动频率的问题,提出一种基于小波包分解独立分量分析(wavelet package independent component analysis,简称WPICA)和多维经验模式分解(multivariate empirical mode decomposition,简称MEMD)的齿轮箱齿面点蚀故障信号的多通道数据融合识别方法。首先,利用一种窄带独立分量分析(sub-band decomposition independent component analysis,简称SDICA)方法—WPICA,从水泵机组多通道信号中提取齿轮箱振源,确定齿轮箱振动包含的特征频率成分;其次,借助MEMD分解多通道机组振动信号,将所获得的多维固有模式函数(intrinsic mode function,简称IMF)进行矩阵互信息运算,完成多通道数据的融合;最后,通过定义IMF故障敏感因子,确定故障敏感IMF的阶数并获得了齿轮点蚀故障的特征频率。数据分析结果证明了本研究方法的有效性。

关键词：齿轮箱齿轮点蚀小波包分解独立分量分析多维经验模式分解

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装载机正转八连杆机构工作装置的优化设计

同济大学学报（自然科学版） 2001年第12期29卷 1499-1502页

作者：潘双夏刘慧斌冯培恩浙江大学cad&cg国家重点实验室浙江杭州310027

对正转八连杆工作装置进行了运动学分析 ,归纳出了其运动过程中必须满足的各种条件 ,建立了优化模型 ,进行了优化设计。

关键词：工作装置正转八连杆机构优化建模优化设计装载机

Effect of 1,25-dihydroxyvitamin D3 on preventing allograft from acute rejection following rat orthotoic liver transplantation

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World Journal of Gastroenterology 2003年第5期9卷 1067-1071页

作者： Ai-Bin Zhang Shu-Sen Zheng Chang-Ku Jia Yan Wang Department of Hepatobiliary Pancreatic Surgery,The First Affiliated Hospital of Medicine School,zhejiang university,key lab of Combined Multi-Organ Transplantation,Ministry of Public Health,hangzhou 310003,zhejiang Province,china Ai-Bin Zhang Shu-Sen Zheng Chang-Ku Jia Yan Wang Department of Hepatobiliary Pancreatic Surgery The First Affiliated Hospital of Medicine School Zhejiang University Key Lab of Combined Multi-Organ Transplantation Ministry of Public Health Hangzhou 310003 Zhejiang Province China

AIM: To study the mechanism and the preventive role of 1,25-dihydroxyvitamin D3 in acute rejection following orthotopic liver ***: Rats were randomly divided as donors or recipients for orthotopic liver allotransplantation model. Four groups were designed in the study, Group Ⅰ: syngenic control (Wistar to Wistar); Group Ⅱ: acute rejection (SD to Wistar);Group Ⅲ: acute rejection treated with cyclosporine A, and Group Ⅳ: acute rejection treated with 1,25-(OH)2D3. Liver function, rejection activity index and mRNA of IFN-γ, IL-10intragraft in recipients were measured on day t, 5, 7, 15,30 posttransplant for assessing graft function, severity of acute rejection and immune state of ***: Survival time of recipients in Group Ⅳ was significantly prolonged (4/6 recipients survived for over 100days. vs Group Ⅱ, P＜0.001; vs Group Ⅲ, P＞0.05). After treatment with 1,25-(OH)2 D3, mean value of all the assay tested on each experimental time was compared, liver function in group Ⅳ was significantly improved (AST 127±41U/L-360±104 U/L, BIL 13±5 mmol/1-38±11 mmol/l; vs Group Ⅱ, P＜0.05; vs Group Ⅲ, P＞0.05. Rejection activity index was significantly decreased (0-3.3±1.6; vsGroup Ⅱ, P＜0.05;vsGroup Ⅲ, P＞0.05). Level of hepatic IFN-γ, mRNA in group Ⅳ was decreased, while level of hepatic IL-10 mRNA was increased (vs Group Ⅱ, P＜0.05; vs Group Ⅲ, P＞0.05).CONCLUSION: Our results indicated that 1,25-(OH)2D3induced the secretion of cytokine toward to Th2 type, which would alleviate acute rejection, protect liver function and prolong survival of recipient after orthotopic liver transplantation.

关键词： 1,25-二羟基维生素D3 同种异体移植急性排斥反应矫形肝移植术动物实验作用机制

Texture Advection Based Simulation of Dynamic Cloud Scene

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Texture Advection Based Simulation of Dynamic Cloud Scene

Applications of Complete Orthogonal V-system with Multiresolution Property

2007 10th IEEE International Conferences on Computer Aided Design and Computer Graphics(cad/Graphics 2007)

作者： Shiguang Liu 1,Ruoguan Huang 2,Zhangye Wang 2,Qunsheng Peng 2,Jiawan Zhang 1,Jizhou Sun 1 1 School of Computer Science and Technology,Tianjin university,Tianjin 300072,P.R.china 2 state key lab of cad&cg,zhejiang university,hangzhou 31002.,P.R.china

Fast display of realistic dynamic cloud scene is a challenging task for researchers in Computer *** paper describes a novel method of simulating animations of *** first model the motion of cloud based on the physical theory of cloud ***,the physical model of cloud is solved in discrete sparse ***,we can get approximate motion of ***,we advect texture image using the calculated velocity field to add the local detail of dynamic cloud *** the texture image we used is Perlin noise *** color of arbitrary point in the simulation space is got by calculating the product of the density texture and the regenerated Perlin noise ***,by changing different noise maps,realistic dynamic cloud scenes in different light environment are generated at high rendering rates.

关键词： Texture Advection Based Simulation of Dynamic Cloud Scene

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Applications of Complete Orthogonal V-system with Multiresol...

Preparation and Characterization of Hybrid Films with a TCF Acceptor-based Chromophore for Nonlinear Optical Applications

2007 10th IEEE International Conferences on Computer Aided Design and Computer Graphics(cad/Graphics 2007)

作者： Xiaochun Wang 1,Yanyan Liang 2,Hui Ma 2,Ruixia Song 3,4 1 College of Sciences,Beijing Forestry university,Beijing 100083,china 2 Faculty of Information Tech.,Macau university of Science and Tech.,Macau,china 3 The state key lab of cad&cg,zhejiang university,hangzhou 31002.,china 4 College of Sciences,North china university of Tech.,Beijing 100041,china

V-system,a new class of complete orthogonal system in L 2 [0,1],is the generalization of the well-known Haar system and consists of not only smooth functions but also discontinuous functions at ***,the Vsystem can be applied to represent the information with both continuous and discontinuous signals,which is fundamentally different from that of Fourier orthogonal *** this paper,we first describe the multiresolution property of the V-system,then point out that a graphics group can be reconstructed precisely by finite terms of the V-series,finally discuss the classification and recognition of graphics groups using the *** shows from the experiments that the V-system can be applied to the fields of reconstruction of graphics group and pattern recognition.

关键词： Applications of Complete Orthogonal V-system with Multiresolution Property

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Journal of Wuhan university of Technology(Materials Science) 2007年第B12期22卷 794-798页

作者：金学峰钱国栋 Department of Materials Science and Engineering State Key Lab of Silicon MaterialsZhejiang University

A tricyanofuran （TCF） acceptor-based nonlinear optical （NLO） chromophore （2-（3-cyano-4-（4-（（2- hydroxyethyl）（methyl）amino）styryl）-5,5-dimethylfuran-2（5H）-ylidene）malononitrile abbr. FS） was synthesized and then reacted with 3-isocyannatopropyl triethoxysilane （ICTES） to form a functionalized silicon alkoxide precursor （named ICTES-FS）. Sol solutions were obtained after co-hydrolysis/condensation of ICTES-FS, tetraethoxysilane （TEOS） and 3-（Trimethoxysilyl）propyl methacrylate （TSPM）. Transparent films were only fabricated with the sol containing high concentration of TSPM. Higher concentration of TSPM was found useful to abate dipolar chromophore interactions and consequent aggregation problems. Second- order NLO properties and temporal stability of sol-gel films were also investigated by virtue of in situ second harmonic generation （SHG）.

关键词： nonlinear optics poled polymer sol-gel second harmonic generation