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建设科技 2018年第17期 52-55,82页

作者： christian scherer Ernst Semar Harald Becker Wolfgang Wittwer Jens Wolthaus Thomas scherer 李晶科梅林化工集团

本文介绍了一项创新性反应型丁基隔条技术。这项技术使采用结构装配的建筑外立面中的中空玻璃单元具备国际先进的暖边性能与优越的气密性。在极端的环境条件下,中空玻璃单元中的二道密封胶能够承受由于风荷载和极端温度而产生的高应力... 详细信息

本文介绍了一项创新性反应型丁基隔条技术。这项技术使采用结构装配的建筑外立面中的中空玻璃单元具备国际先进的暖边性能与优越的气密性。在极端的环境条件下,中空玻璃单元中的二道密封胶能够承受由于风荷载和极端温度而产生的高应力。为了适应上述应力,科技人员设计了一套反应型丁基系统,该系统融合了隔条、干燥剂与丁基密封胶的各项功能。相比于刚性隔条,这套隔条系统利用中空玻璃单元的整个内部空间来吸收由于环境应力引起的形变。该隔条与玻璃和第二道硅酮密封胶的化学粘合保证了封边条卓越的耐久性。由于在产品应用中采用电脑控制,再加上隔条的极低的渗透性,在正常大规模生产条件下,中空玻璃单元也能达到EN 1279-3(气密性)标准的要求。这就使三玻两腔的中空玻璃的制作变得尤为简单,更易于制作高精度的大板结构中空玻璃,造型设计也更加自由。创新的反应型隔条系统已成为中空玻璃单元技术领域的里程碑,为建筑外立面带来了卓越的耐久性和节能效果,使建筑外立面的能源可持续性迈出了辉煌的一步。

关键词：暖边系统丁基隔条

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角膜转位移植的效果自体和异体内皮细胞损失的比较

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美国医学会眼科杂志（中文版） 2005年第3期17卷 182-182页

作者： Eckart Bertelmann christian Hartmann Matthias scherer Peter Rieck 许珂（译）

背景：异体角膜移植植片的慢性内皮损失特点尚不清楚。可能的原因是细胞移行到植床和慢性亚临床免疫反应。目的：比较自体角膜转位移植术和同种异体角膜移植术后内皮细胞损失的情况，并观察角膜转位移植术后的临床效果。

关键词：异体角膜移植内皮细胞损转位移植自体角膜移植术后同种异体角膜免疫反应细胞移行临床效果

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Comparing two IBM implementations for the simulation of uniform packed beds

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Particuology 2024年第3期86卷 1-12页

作者： christian Gorges Maximilian Brommer Christin Velten Siegmar Wirtz Enric Illana Mahiques Viktor scherer Katharina Zahringer Berend van Wachem Mechanical Process Engineering Otto-von-Guericke-Universitat MagdeburgUniversitatsplatz 239106MagdeburgGermany Department of Energy Plant Technology Ruhr-Universitat BochumUniversitatsstraBe 15044780BochumGermany Laboratory of Fluid Dynamics and Technical Flows Otto-von-Guericke-Universitat MagdeburgUniversitatsplatz 239106MagdeburgGermany

Nowadays,the design of fixed packed bed reactors still relies on empirical correlations,which,especially for small tube to particle diameter ratios,are mostly too inaccurate because of the presence of wall ***,the simulation of fixed packed bed reactors plays an important role to predict and control the flow and process parameters in such,nowadays and in the *** of its straightforward applicability to non-uniform packings with particles of arbitrary shapes,the immersed boundary method(IBM)has advantages over other numerical methods and is used more and more *** paper compares two approaches of IBMs for the simulation of fixed bed reactors with spherical shaped *** classic,smooth approach is compared to the straightforward to implement blocked-off method for velocity fields above the fixed bed for particle Reynolds numbers of 300 and *** from experimental inline PIV-measurements of the reactor to be simulated serve as a basis for *** good agreement with the experiment is found for both simulation methodologies with higher resolutions,considering the more stable flow at a particle Reynolds number of *** in the different IBM approaches occurred for the more unsteady flow at a particle Reynolds number of *** to the blocked-off method,the smooth IBM reflects the formation of additional jets and recirculation zones better right above the bed,though increasing the fluid mesh resolution improves the accuracy of the blocked-off ***,a more diffusive behaviour is found for the blocked-off simulations due to the stairstep representation,which is avoided by using interpolation stencils as in the smooth *** higher mesh refinement in the blocked-off IBM this effect can be reduced,but this also increases the computational effort.

关键词： Immersed boundary method Packed bed reactor Uniform particle packing

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On the combined effect of soil fertility and topography on tree growth in subtropical forest ecosystems—a study from SE China

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Journal of Plant Ecology 2017年第1期10卷 111-127页

作者： Thomas Scholten Philipp Goebes Peter Kühn Steffen Seitz Thorsten Assmann Jürgen Bauhus Helge Bruelheide Francois Buscot Alexandra Erfmeier Markus Fischer Werner Härdtle Jin-Sheng He Keping Ma Pascal A.Niklaus Michael scherer-Lorenzen Bernhard Schmid Xuezheng Shi Zhengshan Song Goddert von Oheimb christian Wirth Tesfaye Wubet Karsten Schmidt Department of Geosciences Soil Science and GeomorphologyUniversity of TübingenRümelinstraße 19-2372070 TübingenGermany Institute of Ecology Leuphana University LüneburgScharnhorststr.121335 LüneburgGermany Faculty of Forest and Environmental Sciences SilvicultureUniversity of FreiburgTennenbacherstraße 479085 Freiburg im BreisgauGermany Institute of Biology/Geobotany and Botanical Garden Martin Luther University Halle WittenbergAm Kirchtor 106108 HalleGermany German Centre for Integrative Biodiversity Research(iDiv)Halle-Jena-Leipzig Deutscher Platz 5e04103 LeipzigGermany Helmholtz Centre for Environmental Research UFZ Theodor-Lieser-Straße 406120 HalleGermany Department of Plant Sciences University of BernAltenbergrain 213013 BernSwitzerland Peking University No.5 Yiheyuan RoadHaidian DistrictBeijing 100871China Institute of Botany Chinese Academy of SciencesNo.20 NanxincunXiangshanBeijing 100093China Institute of Evolutionary Biology and Environmental Studies University of ZürichWinterthurerstrasse 1908057 ZürichSwitzerland Faculty of Biology Department of GeobotanyUniversity of FreiburgSchänzlestraße 179104 FreiburgGermany Institute of Soil Science Chinese Academy of SciencesNo.71 East Beijing RoadNanjingChina TU Dresden Biodiversity and Nature ConservationPienner Straße 701737 TharandtGermany Department of Systematic Botany and Functional Biodiversity University of LeipzigJohannisallee 2104103 LeipzigGermany

Aims The aim of our research was to understand small-scale effects of topography and soil fertility on tree growth in a forest biodiversity and ecosystem functioning(BEF)experiment in subtropical SE *** Geomorphometric terrain analyses were carried out at a spatial resolution of 5×5 *** samples of different depth increments and data on tree height were collected from a total of 566 plots(667 m2 each).The soils were analyzed for carbon(soil organic carbon[SOC]),nitrogen,acidity,cation exchange capacity(CEC),exchangeable cations and base saturation as soil fertility *** plots were classified into geomorphological *** of variance and linear regressions were applied to all terrain,soil fertility and tree growth *** Findings In general,young and shallow soils and relatively small differences in stable soil properties suggest that soil erosion has truncated the soils to a large extent over the whole area of the *** explains the concurrently increasing CEC and SOC stocks downslope,in hollows and in ***,colluvial,carbon-rich sediments are missing widely due to the convexity of the footslopes caused by uplift and removal of eroded sediments by adjacent *** results showed that soil fertility is mainly influenced by ***-Carlo flow accumulation(MCCA),curvature,slope and aspect significantly affected soil ***,soil fertility was affected by the different geomorphological positions on the experimental sites with ridge and spur positions showing lower exchangeable base cation contents,especially potassium(K),due to *** geomorphological effect of soil fertility is most pronounced in the topsoil and decreases when considering the subsoil down to 50 cm *** soil fertility attributes affect tree height after 1-2 years of growth,among which C stocks proved to be most important while pH_(KCl)and CEC only played minor ***,soil acidity and a hig

关键词： soil fertility topography soil erosion matter transport biodiversity DSM carbon stocks tree forest BEF-China China

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