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特殊模具在数控冲床中的应用

锻造与冲压 2006年第12期 58-60页

作者： mate.Precision Tooling mate.Precision Tooling

数控冲床作为金属板材冲压加工的关键设备，已经被越来越多的企业所接受。很多企业在选用数控冲床以后，如何充分利用数控冲床完成更多的加工工作，充分发挥数控冲床的功效，显得越来越重要。数控冲床功效的发挥除了数控冲床本身的功能... 详细信息

数控冲床作为金属板材冲压加工的关键设备，已经被越来越多的企业所接受。很多企业在选用数控冲床以后，如何充分利用数控冲床完成更多的加工工作，充分发挥数控冲床的功效，显得越来越重要。数控冲床功效的发挥除了数控冲床本身的功能以外，数控冲床加工用模具的选择也非常重要。

关键词：数控冲床模具冲压加工金属板材企业功效

Elastic and Inelastic Response of Structural Systems in Seismic Pounding

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Open Journal of Civil Engineering 2016年第1期6卷 50-73页

作者： N. U. mate.S. V. Bakre O. R. Jaiswal K. K. Sayyad Civil Engineering Department Amrutvahini College of Engineering Sangamner India Department of Applied Mechanics Visvesvaraya National Institute of Technology (VNIT) Nagpur India

The present paper addresses the comparative study of three adjacent single-degree-of freedom structures for elastic and inelastic system with and without pounding under seismic excitations. For the gap between three adjacent structures, the simulation is done by using linear spring element without damping. The entire numerical simulation is done in time domain by considering the inputs of four real ground motions. The results of the study show that the response of elastic system is much different to that of response of inelastic system in the absence and presence of pounding, especially in lighter or more flexible structures. Elastic structures show much severe pounding response than inelastic structures. Modeling of colliding structures behaving inelastically is really needed in order to obtain the accurate structural pounding involved response under seismic excitation.

关键词： Seismic Pounding Gap Element MDOF Elastic and Inelastic Stick System Time History Analysis Spectral Acceleration Response

Transport Cooperation across Borders:Towards Common Transport Policy in the Western Balkans

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Journal of Traffic and Transportation Engineering 2019年第4期7卷 171-180页

作者： mate.Gjorgjievski Transport Law Expert South East Europe Transport ObservatoryBelgradeRepublic of Serbia

The implementation of infrastructure projects with cross-border significance,and pursuing a common transport policy in the Western Balkans which supports the regulatory and institutional reforms,have a substantial impact on the regional *** contribute to the opening of the regional markets and boosting the intraregional and international *** a region which suffered tremendously during the 1990’s and saw brutal abruption of the transport network across the region,leaving fragmented pieces of what used to be a nearly single transport system,the coordination of investments for large transport infrastructure projects and policies which facilitates such investments,is of utmost *** transport policy and investment coordination on regional level is conducted under the South East Europe Transport Observatory(SEETO),aiming to promote development of the multimodal SEETO Comprehensive Network,which now forms part of the Trans-European Transport Networks(TEN-T Comprehensive Network).The paper will firstly focus on the general conditions of the Network and elaborate the methodology and coordination mechanisms for prioritization of regional-scale projects,the investments in which,have reached€10.8 billion in 2007-2011 *** significant progress of the network conditions is apparent,the investments needs of the regional transport network are still quite high:€8.6 billion.(source:SEETO).Parallel to the development of the Network,the countries from the region endeavor to carry out measures that transform and modernize their national transport system in line with the EU Transport *** paper will look at these soft/horizontal measures that aim at alleviation of the regulatory and institutional deficiencies,thus bringing added value to the regional transport ***,the paper will recommend further incentives for transport collaboration across border and actions at regional level which are likely to have greater impact on the transport

关键词： Transport infrastructure transport service transport network

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不同牙桩修复材料的三维有限元应力分析

山东大学学报（工学版） 2003年第2期33卷 107-109页

作者：梁栋科朱瑞富吕宇鹏李木森山东大学材料科学与工程学院山东济南250061

利用三维建模软件建立桩修复的仿真模型,并利用有限元技术对其进行应力分析,根据设定的约束及受力条件,确定其应力分布状态,结果显示:桩的应力值明显高于牙本质,合金桩与复合桩材料的整体应力值较小,树脂桩应力值较大且比较集中.结论:... 详细信息

利用三维建模软件建立桩修复的仿真模型,并利用有限元技术对其进行应力分析,根据设定的约束及受力条件,确定其应力分布状态,结果显示:桩的应力值明显高于牙本质,合金桩与复合桩材料的整体应力值较小,树脂桩应力值较大且比较集中.结论:建议采用高强度、高模量的桩材料.

关键词：牙科工艺学计算机化仿真有限元分析材料科学

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N-acetyl-L-cysteine combined with mesalamine in the treatment of ulcerative colitis: Randomized,placebo-controlled pilot study

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World Journal of Gastroenterology 2008年第18期14卷 2851-2857页

作者： Luis G Guijarro Jose mate.Javier P Gisbert Jose Luis Perez-Calle Ignacio Marín-Jimenez Encarna Arriaza Tomás Olleros Mario Delgado Maria S Castillejo David Prieto-Merino Venancio Gonzalez Lara Amado Salvador Pea Department of Biochemistry and Molecular Biology CIBERehd Alcalá University Alcalá de Henares Madrid Spain Gastroenterology Unit CIBERehd La Princesa University Hospital Autonomous University Madrid Spain Gastroenterology Unit Gregorio Maraón University Hospital Complutense University Madrid Spain Group Farmasierra SL. Ctra N-Ⅱ Km 26.200 San Sebastián de los Reyes Madrid Spain Laboratory of Immunogenetics Department of Pathology VU University Medical Center Amsterdam The Netherlands

AIM: To evaluate the effectiveness and safety of oral N-acetyl-L-cysteine (NAC) co-administration with mesalamine in ulcerative colitis (UC) patients. METHODS: Thirty seven patients with mild to moderate UC were randomized to receive a four-wk course of oral mesalamine (2.4 g/d) plus N-acetyl-L-cysteine (0.8 g/d) (group A) or mesalamine plus placebo (group B). Patients were monitored using the Modified Truelove-Witts Severity Index (MTWSI). The primary endpoint was clinical remission (MTWSI ≤ 2) at 4 wk. Secondary endpoints were clinical response (defined as a reduction from baseline in the MTWSI of ≥ 2 points) and drug safety. The serum TNF-α, interleukin-6, interleukin-8 and MCP-1 were evaluated at baseline and at 4 wk of treatment. RESULTS: Analysis per-protocol criteria showed clinical remission rates of 63% and 50% after 4 wk treatment with mesalamine plus N-acetyl-L-cysteine (group A) and mesalamine plus placebo (group B) respectively (OR = 1.71; 95% CI: 0.46 to 6.36; P = 0.19; NNT = 7.7). Analysis of variance (ANOVA) of data indicated a significant reduction of MTWSI in group A (P = 0.046) with respect to basal condition without significant changes in the group B (P = 0.735) during treatment. Clinical responses were 66% (group A) vs 44% (group B) after 4 wk of treatment (OR = 2.5; 95% CI: 0.64 to 9.65; P = 0.11; NNT = 4.5). Clinical improvement in group A correlated with a decrease of IL-8 and MCP-1. Rates of adverse events did not differ significantly between both groups. CONCLUSION: In group A (oral NAC combined with mesalamine) contrarily to group B (mesalamine alone), the clinical improvement correlates with a decrease of chemokines such as MCP-1 and IL-8. NAC addition not produced any side effects.

关键词：白细胞间介素大肠溃疡 N-乙酰基-L-半胱氨酸治疗方法

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环形件摆动辗压接触区域的压力分布

山东工业大学学报 1997年第4期27卷 312-314页

作者：王广春山东工业大学材料科学与工程学院

将有限元数值方法引入摆动辗压工艺的研究之中，对环形件摆动辗压变形进行了三维刚塑性有限元分析，给出了环形件摆动辗压接触区域的压力分布，符合摆辗变形的实际情况，对摆辗生产环类件具有重要的指导意义．

关键词：压力分布有限元环形件摆动辗压

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织物上使用的杀菌剂

文物保护与考古科学 1991年第1期 51-55页

作者： M.P.Nugari G.F.Prior D.mate. F.Scala 解玉林

本文认为在艺术品的修复期间,杀菌剂可以作为一种预防措施.该八种杀菌荆的杀菌性能在其它领域早已广泛进行了试验.我们用这些杀菌剂对通常在修复上使用的三种类型的织物进行杀菌性能试验,试验时间28天.通过紫外线辐照条件下人工老化的... 详细信息

本文认为在艺术品的修复期间,杀菌剂可以作为一种预防措施.该八种杀菌荆的杀菌性能在其它领域早已广泛进行了试验.我们用这些杀菌剂对通常在修复上使用的三种类型的织物进行杀菌性能试验,试验时间28天.通过紫外线辐照条件下人工老化的前、后测得的织物反射率的变化来评价杀菌剂与织物间的相互作用,确认了可以在修复期间使用的杀菌剂,并对它们已知的毒性予以了考虑.

关键词：丝织物化合物光泽度紫外线辐照

MEASUREMENTAL RESEARCH ON THE MAGNETOMECHANICAL COUPLING PROPERTIES OF RARERARTH GIANT MAGNETOSTRICTION mate.IALS

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Acta Metallurgica Sinica(English Letters) 1999年第4期12卷 357-360页

作者： C.Y. Li1) , H.Q. Yuan2) , F.X. Meng3) and Z. Zhou4) 1) Institute of Liaoning Technology,Jinzhou 121001 ,China 2) Northeastern University ,Shenyang 10006 ,China 3) Shenyang University ,Shenyang 110044 ,China 4) Xincheng Rare Earth Magnetostrictive mate

The physical modelanditsequivalentcircuitoftestapparatusissetup by meansofimpedanceanalysis method. The magnetostriction coefficient, magnetomechanicalcoupling coefficient,frequency and anti- frequency of TbxDy1 - xFe2 - z(0 27 ≤x ≤0 3 ,0 ≤z ≤0 1) rod are measured. Somecoupling problems with mechanicalstress and electromagnetic field such as flux leakage in magnetic path are discussed. The comparing calculated with tested resultsshowsthe accuracyof measurementand thesimplification of model.

关键词： magnetostriction mate.ial magnetomechanicalcoupling properties experi ment

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