3篇
您的检索式：作者名="Markus Obel"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Pectin May Hinder the Unfolding of Xyloglucan Chains during Cell Deformation: Implications of the Mechanical Performance of Arabidopsis Hypocotyls with Pectin Alterations显示文摘种房间墙,象大量的其它一样生物材料,是自然增强纤维的合成材料。他们的机械性质自己高度依赖于生硬含纤维的阶段和软矩阵阶段的相互影响并且在矩阵变丑上。用特定的 Arabidopsis thaliana 异种,我们与改变的 xyloglucan 和果胶作文在胚轴的主要房间墙中学习了矩阵集会的机械角色。标准 microtensile 测试和周期的装载协议象少些展出 50% 的 qua2 一样与影响 RGII 硼酸盐 diester 交叉结合和妨碍的 xyloglucan fucosylation 在 mur1 胚轴上被执行 homogalacturonan 与相比野类型。作为控制,野类型的植物(Col-0 ) 和在果胶网络展出特定的 xyloglucan fucosylation 和没有差别的 mur2 被利用。在标准张力的测试,有果胶改变的异种的胚轴的最终的压力层次(张力的力量)(mur1, qua2 ) 是相当未受影响的,而他们的张力的僵硬显著地与 Col-0 相比被减少。周期的装载测试显示了一在首先拉紧然而,其度为 mur1 和 qua2 胚轴是高得多的期间在第一个周期和塑料变丑以后所有胚轴使硬。基于机械数据和当前的房间墙模型,在纤维素纤丝之间的合拢的 xyloglucan 链可以趋于在胚轴拉紧期间展开,这被假定。这回答被几何限制可能由于果胶刚硬妨碍。 | Willie Abasolo Michaela Eder Kazuchika Yamauchi Nicolai Obel Antje Reinecke Lutz Neumetzler John W.C. Dunlop Gregory Mouille Markus Pauly Herman Hofte Ingo Burgert | 2009 | Molecular Plant2009，2，5： | 2 |
| 2 | Microanalysis of Plant Cell Wall Polysaccharides显示文摘当结合时,介绍的奥利戈萨查赖德·马斯(OLIMP ) 允许对房间墙聚合物结构的一个快、敏感的评价矩阵帮助了飞行集体 Spectrometry (MALDITOF MS ) 的激光解吸附作用 Ionisation 时间。为样品准备和分析要求的短时间使大量植物机关的学习可能,揭示在象 cross-linking glycan xyloglucan 和果胶的多糖 homogalacturonan 那样的墙聚合物的替换模式的异质的高度。MALDITOF 的高敏感允许样品的小数量的使用,因此使当材料是时,调查单个房间类型的墙结构可能是由如此的方法收集了激光微解剖。作为一个例子,在叶房间的 xyloglucan 结构的分析打外部外皮层,全部外皮房间层,栅叶肉房间,和脉管的捆被调查。OLIMP 对顺从在 situ 墙分析,在没有首先孤立,墙聚合物自己在无准备的植物织物上被分析的地方,房间围。另外, OLIMP 在充实 Golgi 的部分启用墙聚合物的分析,初生的矩阵多糖生合成的地点,墙生合成对免职以后的 apoplastic 新陈代谢的过程的创新分离。这些新工具将在崭新的水平使房间墙的半量的分析可能。 | Nicolai Obel Veronika Erben Tatjana Schwarz Stefan Kuhnel Andrea Fodor Markus Pauly | 2009 | Molecular Plant2009，2，5： | 1 |
| 3 | A holistic approach for the investigation of lining response to mechanized tunneling induced construction loadings显示文摘Design methods for segmental tunnel linings used in mechanized tunnel constructions typically employ numerical bedded beam mod-els and/or classical analytical solutions for the determination of structural forces(i.e.moments and shear and axial forces)and simple load spreading assumptions for the design of the reinforcement in joint areas.However effcient such methods may be,many physical details are often overlooked and/or oversimplified in the process of reducing the actual structure to a structural beam model,e.g.ana-lytically derived loadings are employed,the grouting and ground reactions are reduced to a spring bedding,and the confinement due to grouting at the longitudinal joint is largely not considered in reinforcement design.Such a design process is not able to account for,or predict,the susceptibility of tunnel linings to often observed damages that,although they may not be structurally relevant,lead to ser-viceability or durability issues,such as crack development or chipping at the segment corners.Numerical methods,such as the Finite Element Method,provide an opportunity to model the segmental tunnel lining and its response to the entire TBM construction process and to explicitly model the crack development within individual segments using modern methods to model the discontinuities in struc-tures.In this contribution,a holistic modeling procedure for the representation of the tunnel lining within the tunneling process is pro-posed and compared to traditional lining models.A 3D process oriented Finite Element model is used to calculate the predicted forces on the tunnel lining and the obtained results are compared with those generated by traditional methods.Subsequently,the predicted defor-mations are then transferred to a detailed segment model in which the nonlinear response of the segment at the longitudinal joint is mod-eled using an interface element based approach to simulate concrete cracking. | Vojtech Ernst Gall Ahmed Marwan Mario Smarslik Markus Obel Peter Mark Gunther Meschke | 2018 | Underground Space2018，3，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员