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Counting particle measurement within the size range from soot to pollen

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Counting particle measurement within the size range from soo...

Environmental Impacts of the Yangtze Three Gorges Project: An Overview of the Chinese-German Research Cooperation

第九届全国气溶胶会议暨第三届海峡两岸气溶胶技术研讨会

作者： martin Schmidt Sven Schütz leander m lter Palas~ GmbH Greschbachstr.3b76229 KarlsruheGermany

In many gaseous multi-phase systems,like in the atmosphere,in exhaust gases etc.,there are particles which are too small to be measured directly by conventional detection mechanisms with regard to their number and to their *** temporally resolved detection of these parameters is however important because the particle size and particle number can have a substantial influence on the health *** the breathing air,or they may affect the efficiency and the lifetime of filters *** technology. To measure the number of small particles within the range of 5 nm to 1 μm condensation nucleus counters,so called CNCs,are *** CNCs are developed usually for laboratory measurements and are sensitive in relation to fluctuations of the temperature and of the air pressure in the atmosphere. The combination of a new condensation module,the CNC-04,with the white light aerosol spectrometer welas and the passive collector Sigma-2 makes possible an almost accurate time-resolved determination of the particle number within the range of approx.10 nm to 40 μm. With the welas-system a temporally high-resolved particle size determination is possible in the ranges 0,3-17 μm or 0.7-40 μm also in high concentrations up to 10 particles/cm. Due to the combination of the welas with the new CNC-04 module,the number of smallest particles down to 10 nm can,for the first time,be accurately determined with a counting procedure also in concentrations up to 10 particles/***,the new device combination is suitable particularly for measurements in the outside air, the more so as the number concentration of atmospheric particles＜100 nm can increase easily up to 10 particles/cm. Since for the high-resolved size and quantity determination of particles＞0.3 μm one uses the same device as for the counting of the up-condensed smaller particles,both measurements are identical concerning the counting ***,the measurement results can be clearly combined computationally. Furthermor

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Journal of Earth Science 2010年第6期21卷 817-823页

作者： Günter Subklew Julia Ulrich leander Fürst Agnes Hltkemeier Forschungszentrum Jülich GmbH

The construction of the Three Gorges Dam on the Yangtze River in China has a great influence on the ecosystems involved. In order to investigate these environmental effects in the Yangtze catchment area as well as downstream of the dam, Forschungszentrum Julich has organized a research network for the Chinese and Germaa partners. In the research fields of （1） interaction water/ sediment/contaminants, （2） vegetation/biodiversity, （3） changing land use/erosion/mass movements, and （4） atmosphere, the partners have accumulated a great deal of expertise in handling major issues and also in developing models and recommendations for action. The following provides an overview of the research network and the research tasks. On the German side, five projects in research field （3） have been in operation since 2008. The results are reported in contributions by Ehret et al., Jaehnig and Cai, Schonbrodt et al., and Seeber et al.. Another five projects in research field （1） have started by September 2010. The research tasks undertaken in these five projects are presented below.

关键词： Three Gorges Dam Yangtze River environmental research ecosystem.

Highly Precise Corneal Surgery and All-Optical Histology with Femtosecond Lasers

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光学学报 2003年第S1期23卷 811-812页

作者： leander Zickler meng Han Guenter Giese Josef FBille Frieder HLoesel University of Heidelberg Kirchhoff-Institute fuer PhysikIm Neuenheimer Feld 227D-69120HeidelbergGermany 20/10 Perfect Vision Optische Geraete GmbHAm Taubenfeld 21/1D-6912 Heidelberg Germany’Max-Planck-Institut fuer medizinische ForschungJahnstrasse 29D-69120HeidelbergGermany

We present an optimized femtosecond laser system for intrastromal tissue manipulation, application studies of commercial fs-LASIK procedures and results from the first successful demonstration of nonlinear (SHG) imagi... 详细信息

关键词： femtosecond laser

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全球烧结金属含油轴承评定

粉末冶金技术 2008年第1期26卷 65-70页

作者： Howard Ⅰ.Sanderow leander F.Pease 韩凤麟 President Management & Engineering TechnologiesMET Group Inc.161 Copperfield DriveDaytonOhio 45415-1264USA President Powder-Tech AssociatesInc.31 Flagship DriveNorth AndoverMassachusetts01845-6194USA

烧结金属含油轴承是当今全世界最早生产和使用最广的粉末冶金产品。以前对一种组成为中等石墨-青铜的轴承研究发现,北美制造的轴承和欧洲生产的同样产品之间有显著差异。为此,对北美、欧洲及日本提供的轴承,进行了比较详细的研究。每一... 详细信息

烧结金属含油轴承是当今全世界最早生产和使用最广的粉末冶金产品。以前对一种组成为中等石墨-青铜的轴承研究发现,北美制造的轴承和欧洲生产的同样产品之间有显著差异。为此,对北美、欧洲及日本提供的轴承,进行了比较详细的研究。每一地区至少提供二个生产厂商和二种不同合金的轴承试件。合金范围包括青铜、铁-铜及铁-石墨。测试结果证实了以前的发现,欧洲制造的青铜轴承和北美与日本生产的轴承不同,现在认为这是由于铜基粉末不同所致。还发现北美和日本制造的铁-石墨轴承的压溃强度不同。提出了这些研究的结果,包括证实力学性能不同的显微照片。另外,还评价了和国际标准ISO 5755有关的结论。

关键词：粉末冶金含油轴承烧结金属全球评定

PEP7 acts as a peptide ligand for the receptor kinase SIRK1 to regulate aquaporin-mediated water influx and lateral root growth

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molecular Plant 2022年第10期15卷 1615-1631页

作者： Jiahui Wang Lin Xi Xu Na Wu Stefanie Konig leander Rohr Theresia Neumann Jan Weber Klaus Harter Waltraud X.Schulze Department of Plant Systems Biology University of Hohenheim70593 StuttgartGermany School of Life Science Center for Life SciencesYunnan University650091 KunmingPeople's Republic of China Center for Plant molecular Biology University of Tubingen72076 TubingenGermany

Plant receptors constitute a large protein family that regulates various aspects of development and responses to external *** characterization of this protein family and the identification of their ligands remain major challenges in plant ***,we identified plasma membrane-intrinsic sucrose-induced receptor kinase 1(SIRK1)and Qian Shou kinase 1(QSK1)as receptor/co-receptor pair involved in the regulation of aquaporins in response to osmotic conditions induced by *** this study,we identified a member of the elicitor peptide(PEP)family,namely PEP7,as the specific ligand of th receptor kinase ***7 binds to the extracellular domain of SIRK1 with a binding constant of 1.44±0.79μm and is secreted to the apoplasm specifically in response to sucrose *** of a signaling complex involving SIRK1,QSK1,and aquaporins as substrates is mediated by alterations in the external sucrose concentration or by PEP7 ***,the presence of PEP7 induces the phosphorylation of aquaporins in vivo and enhances water influx into *** water influx,in turn,led to delayed lateral root development in the pep7 *** loss-of-function mutant of SIRK1 is not responsive to external PEP7 treatment regarding kinase activity,aquaporin phosphorylation,water influx activity,and lateral root *** together,our data indicate that the PEP7/SIRK1/QSK1 complex represents a crucial perception and response module that mediates sucrose-controlled water flux in plants and lateral root development.

关键词： receptor kinase peptide signaling receptor-ligand pair sugar signaling regulation of water influx

欧洲与北美制造的烧结青铜含油轴承性能的比较

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粉末冶金技术 2006年第4期24卷 304-309页

作者： Haward I.Sanderrow leander F.Pease 韩凤麟 President Management & Engineering TechnologiesMET Group Inc. President Powder-Tech AssociatateInc.

多孔性青铜含油轴承是全世界都在生产的,最早与最无处不用的现代粉末冶金产品。然而,各地区产品之间仍存在着明显差异。近期发布的粉末冶金材料的全球标准ISO5755,其中有2个描述轴承材料性能的数据表。其中列举的几项关键性轴承特性和m... 详细信息

多孔性青铜含油轴承是全世界都在生产的,最早与最无处不用的现代粉末冶金产品。然而,各地区产品之间仍存在着明显差异。近期发布的粉末冶金材料的全球标准ISO5755,其中有2个描述轴承材料性能的数据表。其中列举的几项关键性轴承特性和mPIF标准35或相应的ASTm标准中列出的轴承性能有所不同。因此,mPIF标准委员会进行一项小型试验,对标准90%(质量分数)Cu-10%(质量分数)Sn轴承的关键特性进行了对比。这项研究的样品零件来自欧洲与北美的大批量生产厂家。数据证实孔隙度与径向压溃强度不同,这种差异是原料粉与制造工艺的微妙差异所致。最终用户应该了解这些差异,和确认ISO5755中列举的特性能满足他们对轴承的要求。

关键词：粉末冶金轴承性能青铜含油轴承

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追求能源效率是材料研发的动力

工程塑料应用 2009年第5期37卷 109-111页

作者： leander Bergmann Thomas Wutke Akro-Plastic/德国

在发动机舱内的塑料必须能承受发动机舱内持续生高的温度.

关键词：能源效率发动机

Plasma Cutting of Structured Sheet metals in Comparison with Laser Beam Cutting

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材料科学与工程（中英文B版） 2015年第3期5卷 135-144页

作者： leander Schleuss Thomas Richter Ralf Ossenbrink Vesselin michailov Department of Joining and Welding Brandenburg University of Technology Cottbus-Senftenberg Cottbus 03046 Germany

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一种简单的溶胶-凝胶法制备二氧化锆介质层

四川大学学报（自然科学版） 2016年第4期53卷 843-846页

作者：李国安杜惊雷 leander Schulz 四川大学物理科学与技术学院成都610065

在电子产业中,能够进行低压操作以及能够在非常薄的薄层上进行器件设计的材料备受关注.并且,这些材料需要使用方法简单、快速、可靠.作者提出一种简单且快速可靠的沉积高k二氧化锆介电层的方法.整个过程从原来常规过程的140分钟缩短到1... 详细信息

在电子产业中,能够进行低压操作以及能够在非常薄的薄层上进行器件设计的材料备受关注.并且,这些材料需要使用方法简单、快速、可靠.作者提出一种简单且快速可靠的沉积高k二氧化锆介电层的方法.整个过程从原来常规过程的140分钟缩短到10分钟.这种改进的方法在操作流程方面有显著的提升.这种溶胶凝胶法制备的样品介电层厚度远小于与之前报道的样品,其厚度约为原方法制备样品的25%.在优化操作过程与降低介电层厚度的同时,二氧化锆的介电性质并没有被影响.作者进一步研究了样品的介电特性,在90K到300K之间介电性质的变化小于10%.

关键词：二氧化锆溶胶-凝胶法电介质