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The potential of vertebrate microfossils for marine to non-marine correlation in the Late Jurassic

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Progress in Natural Science:Materials International 2007年第6期17卷 655-663页

作者： detlev Thies Alexander Mudroch Susan Turner Institute of Geology und Paleontology University of HannoverD-30167 HannoverGermany Independent Palaeobiologist Bcklinplatz 4D-30177 HannoverGermany School of Geosciences Monash UniversityVictoria 3800AustraliaQueensland MuseumGeology/Palaeontology122 Gerler RoadHendraQueensland 4011Australia

Fish (cartilaginous: elasmobranch and bony: osteichthyan actinopterygian) and reptile (crocodile) microfossils comprising scales and teeth have been examined from a series of limestone samples in the Upper Jurassic of France and Germany to gauge the possibilities of using them for correlation between fully marine and hypo-or hyper-saline (non-marine) deposits.

关键词： Upper Jurassic Kimmeridgian chondrichthyans actinopterygians crocodilians microfossils biostratigraphy

Spatial separation effects in a guiding procedure in a modified ion-beam-sputtering process

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Light(Science & Applications) 2015年第1期4卷 109-116页

作者： Sina Malobabic Marco Jupé detlev Ristau Laser Zentrum Hannover e.V. Hollerithallee 8D-30419 HannoverGermany QUEST:Centre for Quantum Engineering and Space-Time Research Leibniz Universität HannoverHannoverGermany

In the present state of the art,ion beam sputtering is used to produce low-loss dielectric *** the manufacturing of a dielectric layer stack,the deposition material must be changed,which requires rapid mechanical movement of vacuum *** mechanical components can be regarded as a risk factor for contamination during the coating process,which limits the quality of high-end laser *** minimize the particle contamination,we present a novel deposition concept that does not require movable components to change the coating material during the coating process.A magnetic field guiding technique has been developed,which enables the tuning of the refractive index in the layer structure by sputtering mixtures with varying compositions of two materials using a single-ion *** versatility of this new concept is demonstrated for a highreflection mirror.

关键词： EM field separation ion beam sputtering plasma guiding

Contactins in the central nervous system: role in health and disease

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Neural Regeneration Research 2019年第2期14卷 206-216页

作者： Madhurima Chatterjee detlev Schild Charlotte E.Teunissen Amsterdam UMC VU University Medical Center Department of Clinical Chemistry Amsterdam Neuroscience Institute of Neurophysiology and Cellular Biophysics University of G?ttingen DFG Research Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB) University of G?ttingen DFG Excellence Cluster 171 University of G?ttingen

Contactins are a group of cell adhesion molecules that are mainly expressed in the brain and play pivotal roles in the organization of axonal domains, axonal guidance, neuritogenesis, neuronal development, synapse formation and plasticity, axo-glia interactions and neural regeneration. Contactins comprise a family of six members. Their absence leads to malformed axons and impaired nerve conduction. Contactin mediated protein complex formation is critical for the organization of the axon in early central nervous system development. Mutations and differential expression of contactins have been identified in neuro-developmental or neurological disorders. Taken together, contactins are extensively studied in the context of nervous system development. This review summarizes the physiological roles of all six members of the Contactin family in neurodevelopment as well as their involvement in neurological/neurodevelopmental disorders.

关键词： cell adhesion molecule Contactins axonal domain,neurogenesis synaptogenesis autism spectrum disorder neuro-developmental disorder neurological disease

Waterproof coatings for high-power laser cavities

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Light(Science & Applications) 2019年第1期8卷 1063-1068页

作者： Xinbin Cheng Siyu Dong Song Zhi Sebastian Paschel Istvan Balasa detlev Ristau Zhanshan Wang MOE Key Laboratory of Advanced Micro-Structured Materials Shanghai 200092China Institute of Precision Optical Engineering School of Physics Science and EngineeringTongji UniversityShanghai 200092China IFSA Collaborative Innovation Center Shanghai Jiao Tong UniversityShanghai 200240China Laser Zentrum Hannover e.V. Laser Components DepartmentHannover 30419Germany

With the ever-increasing laser power and repetition rate,thermal control of laser media is becoming increasingly *** for widely used air cooling or a bonded heat sink,water cooling of a laser medium is more effective in removing waste ***,how to protect deliquescent laser media from water erosion is a challenging ***,novel waterproof coatings were proposed to shield Nd:Glass from water *** clarifying the dependence of the waterproof property of single layers on their microstructures and pore characteristics,nanocomposites that dope SiO_(2) in HfO_(2) were synthesized using an ion-assisted co-evaporation process to solve the issue of a lack of a highindex material that simultaneously has a dense amorphous microstructure and wide ***_(0.7)Si_(0.3)O_(2)/SiO_(2) multifunctional coatings were finally shown to possess an excellent waterproof property,high laser-induced damage threshold(LIDT)and good spectral performance,which can be used as the enabling components for thermal control in high-power laser cavities.

关键词： power high property

激光薄膜特性参数测试方法标准化进展(特邀)

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光子学报 2022年第9期51卷 32-41页

作者：李斌成王静 RISTAU detlev 电子科技大学光电科学与工程学院成都610054 汉诺威莱布尼兹大学量子光学研究所德国汉诺威30167

综述了近年来激光薄膜元件反射率/透过率、吸收损耗、散射损耗和激光损伤阈值等主要性能参数测试方法的标准化进展。重点分析了分光光度法、激光比率法和光腔衰荡法三种标准的反射率/透过率测试方法的优缺点,指出了分光光度法和光腔衰... 详细信息

综述了近年来激光薄膜元件反射率/透过率、吸收损耗、散射损耗和激光损伤阈值等主要性能参数测试方法的标准化进展。重点分析了分光光度法、激光比率法和光腔衰荡法三种标准的反射率/透过率测试方法的优缺点,指出了分光光度法和光腔衰荡法的适用范围。分析了激光量热法测量薄膜元件吸收损耗的优点和不足,介绍了正在制定中的光热吸收测量国际标准的主要内容和进展情况,明确激光量热法主要适用于实验室薄膜元件吸收损耗绝对值的确定,而光热法更适用于大口径元件吸收损耗的确定和吸收型缺陷分布的成像测量。介绍了激光损伤阈值测试方法目前正在修订版本的主要技术内容和区别,修订后的激光损伤阈值测试方法国际标准将考虑客户的测试要求,测试结果可更满足工程应用需求。最后介绍了中国主持国际标准制定修订情况及国际标准在中国的转化情况。

关键词：标准化测试方法激光损伤阈值反射率/透过率吸收损耗散射损耗

Advanced control and modeling of deposition processes

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Chinese Optics Letters 2013年第13期11卷 30-35页

作者： detlev Ristau Henrik Ehlers Centre of Quantum Engineering and Space-Time Research Hannover Germany Department of Laser Components Laser Zentrum Hannover e.V. Hannover Germany

During the last decade, striking improvements could be achieved for the precise control of deposition processes in optical coating technology. For example, as a consequence of enormous progresses in measure- ment and computer technology, direct optical monitoring in a broad spectral range can be considered as a common tool in many production environments nowadays. Besides the development of the corresponding hardware and measurement channels, advanced approaches for the evaluation of the acquired data and new multiple sensor monitoring strategies moved into the focus of modern research on the way towards de- terministic deposition techniques. In this context, also innovative concepts for the simulation of deposition processes to forecast the result for a specified coating design and automatic online correction algorithms gained of importance to reduce the risk of failure in coating production. The present contribution will be dedicated to selected aspects in this field, especially addressing broad band optical monitoring systems. A short review on examples for existing hardware configurations and software tools will be presented illus- trating the advantages of modern process control techniques. Novel approaches based on the modeling of thin film growth are discussed as an additional strategy to improve the predictability of coating processes.

关键词： 310.1860 Deposition and fabrication 310.6845 Thin film devices and applications 280.4788 Optical sensing and sensors

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激光量热法测量光学薄膜微弱吸收

中国激光 2006年第6期33卷 823-826页

作者：李斌成熊胜明 Holger Blaschke detlev Ristau 中国科学院光电技术研究所四川成都610041 汉诺威激光中心德国汉诺威30419

按照国际标准ISO 11551研制了用于测量光学薄膜微弱吸收的激光量热装置。典型情况下吸收测量灵敏度优于10-6,测量误差估计为10%左右。在1064 nm波长测量1 mm厚石英玻璃基板的绝对吸收为3.4×10-6,测量灵敏度达到1.5×10-7。测量了不同... 详细信息

按照国际标准ISO 11551研制了用于测量光学薄膜微弱吸收的激光量热装置。典型情况下吸收测量灵敏度优于10-6,测量误差估计为10%左右。在1064 nm波长测量1 mm厚石英玻璃基板的绝对吸收为3.4×10-6,测量灵敏度达到1.5×10-7。测量了不同膜层设计、不同使用角度、不同镀膜技术镀制的全介质高反膜样品;使用离子束溅射(IBS)技术镀制的Ta2O5/SiO2多层0°反射镜的吸收仅为1.08×10-5,而使用离子束辅助沉积(IAD)技术镀制的HfO2/SiO2多层45°反射镜的吸收测量值为6.83×10-5。

关键词：测量技术微弱吸收激光量热法光学薄膜

EXPERIMENTAL STUDY OF THE ROLE OF INITIAL AND BOUNDARY CONDITIONS IN MESOSCALE NUMERICAL WEATHER PREDICTION

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Journal of Tropical Meteorology 2003年第2期9卷 134-142页

作者：闫敬华 detlev Majewski Guangzhou Institute of Tropical & Marine Meteorology CMA Guangzhou 510080 China Duetscher Wetterdinst Offenbach Germany

Based on the real case of a frontal precipitation process affecting South China, 27 controlled numerical experiments was made for the effects of hydrostatic and non-hydrostatic effects, different driving models, combinations of initial/boundary conditions, updates of lateral values and initial time levels of forecast, on model predictions. Features about the impact of initial/boundary conditions on mesoscale numerical weather prediction (NWP) model are analyzed and discussed in detail. Some theoretically and practically valuable conclusions are drawn. It is found that the overall tendency of mesoscale NWP models is governed by its driving model, with the initial conditions showing remarkable impacts on mesoscale models for the first I0 hours of the predictions while leaving lateral boundary conditions to take care the period beyond; the latter affect the inner area of mesoscale predictions mainly through the propagation and movement of weather signals (waves) of different time scales; initial values of external model parameters such as soil moisture content may affect predictions of more longer time validity, while fast signals may be filtered away and only information with time scale 4 times as large as or more than the updated period of boundary values may be introduced, through lateral boundary, to mesoseale models, etc. Some results may be taken as important guidance on mesoseale model and its data *** developments of the future.

关键词： numerical weather prediction mesoseale initial condition boundary condition

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中尺度数值预报模式初边值作用的试验研究

热带气象学报 2003年第4期19卷 337-344页

作者：闫敬华 MAJEWSKI detlev 中国气象局广州热带海洋气象研究所广东广州510080 Duetscher Wetterdinst OffenbachGermany

通过一次影响华南地区的锋面降水过程实例,进行了静力与非静力中尺度模式、不同驱动模式、不同初边值组合、不同边值更新周期、不同起报时次等27组对比试验。较全面细致地从不同侧面分析讨论了初、边值对中尺度模式的影响规律及特点,得... 详细信息

通过一次影响华南地区的锋面降水过程实例,进行了静力与非静力中尺度模式、不同驱动模式、不同初边值组合、不同边值更新周期、不同起报时次等27组对比试验。较全面细致地从不同侧面分析讨论了初、边值对中尺度模式的影响规律及特点,得出了一些有学术和应用价值的结论。如中尺度模式预报的总体趋势决定于其驱动模式,初值仅显著影响中尺度模式大约前10小时的预报,以后的预报趋势则主要决定于边值的信息;边值对模式内区的影响主要通过各种时间尺度天气信息(天气波动)的传播和移动来实现;土壤含水量等模式外参量初值可影响较长时效的预报;模式通过边界只能引入大于等于边值更新周期4倍的时间尺度的信息,更快的信息则被过滤掉;等等。其中一些结论对今后发展中尺度数值预报及其资料同化具有参考价值。

关键词：数值预报中尺度初值边值