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On-Chip Capillary Electrophoresis (Chip-CE) with Optical On-Chip Leaky-Waveguide-Based Detection

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American Journal of Analytical Chemistry 2014年第4期5卷 243-248页

作者： christoph Doering Matthias Grewe Ingo Steingoetter Henning Fouckhardt Integrated Optoelectronics and Microoptics Research Group Physics Department Kaiserslautern University of Technology Kaiserslautern Germany

Capillary electrophoresis (CE) suffers from a relatively small sensitivity—at least in case of optical detection transversely to the capillary axis due to the small capillary inner diameters in the range of 50 - 100 μm. Different concepts like bubble, U-, or z-cells have been used to tackle that problem already in the nineties of the last century. But the U- and z-cells have typically been extra cells with larger inner channel diameters and no optimization for optical waveguiding and the bubble cell per se did not allow for optical waveguiding. In the case of on-chip capillary electrophoresis (chip-CE) a U-cell can be implemented quite easily on the chip. Here we show how leaky optical waveguiding can be employed to improve optical detection. Proper U-channel design and preparation by wet-chemical etching of the fused silica sub- and superstrate, making the U-channel bend a part of the optical input lens system, can help to achieve high coupling efficiency with loss coefficients around 2 dB and low waveguiding loss.

关键词： On-Chip Capillary Electrophoresis Optical Aetection Leaky Waveguides

The effect of temperature changes and K supply on the reproduction and growth of Bolboschoenus planiculmis

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Journal of Plant Ecology 2021年第2期14卷 337-347页

作者： Ying Liu christoph Bachofen Yanjing Lou zhi Ding Ming Jiang Xianguo Lü Nina Buchmann The Three Gorges Institute of Ecological Environment Chongqing Institute of Green and Intelligent TechnologyChinese Academy of SciencesChongqing 400714China Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130012China Institute of Agricultural Sciences Department of Environmental Systems ScienceETH ZürichZürich 8092Switzerland Plant Ecology Research Lab—PERL Environmental Engineering InstituteSchool of ArchitectureCivil and Environmental EngineeringEPFL LausanneLausanne 1015Switzerland Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions College of Environment and PlanningHenan UniversityKaifeng 475004China

Aims Climate warming and agricultural non-point source pollution both resulting from anthropogenic activities have been projected to affect plant reproduction and growth in wetlands *** order to predict and mitigate impacts of these anthropogenic activities,it is important to investigate how marsh plants respond to such environmental *** In this study,Bolboschoenus planiculmis,a tuberous sedge with a wide distribution range in Eurasia,was selected to examine the effect of air temperature changes(15,20 and 25°C over 24 h;20/10 and 30/15°C,day/night)and K supply(0,1,3,9 and 18 mmol/L)on its reproductive and growth traits in climate *** Findings We found that high constant temperatures(20 and 25°C)were more beneficial for tuberization of *** than high alternating temperatures(30/15°C),whereas aboveground biomass and shoot height were generally largest at high temperatures(30/15 and 25°C).Both reproductive and growth traits of *** showed hump-shaped relationships with K supply,with an optimum K concentration of around 1–3 mmol/*** combination of high constant temperatures and optimal K concentrations promoted reproductive traits the most,whereas the combination of higher temperatures(30/15 and 25°C)and K concentrations up to 9 mmol/L increased growth traits *** therefore conclude that population abundance of *** might benefit from global warming and the additional K supply.

关键词： climate warming non-point source pollution functional traits clonal reproduction wetland plants marsh

System Design for a Direct-Boost Turbocharged SI Engine Using a Camshaft Driven Valve

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System Design for a Direct-Boost Turbocharged SI Engine Usin...

Content-based facial image retrieval using common vector

FISITA 2012 World Automotive Congress--Volume 3:Future Automotive Powertrains

作者： christoph Voser christopher Onder Lino Guzzella Institute for Dynamic Systems and Control ETH ZrichZurichSwitzerland

Downsizing and turbocharging for retaining the maximal power is a common approach to improve the fuel economy of SI internal combustion *** to the additional turbocharger dynamics,small engines suffer from a significant time lag of the torque *** injection of pressurized air into the combustion chamber during the compression phase,also called direct-boost,can recover the *** far,expensive and complex fully variable valve-trains have been proposed for the air exchange between the air tank and the combustion *** this paper,a direct-boost system using a camshaft driven valve is *** appropriate control strategy is *** transient performance of the complete system and the feasibility of the control strategy are demonstrated on a modified0.75 1 turbocharged two-cylinder test bench engine.

关键词： Downsizing Turbocharging Turbo lag-Driveability Direct-boost

来源： cnki会议评论

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通讯和计算机（中英文版） 2008年第9期5卷 5-11,50页

作者： WANG zhi-fang SONG Chen NIU Xia-mu christoph Busch Harbin Institute of Technology Harbin 150001 China NISlab Gjcvik University College Norway N-2802 Norway

Facial image retrieval is an essential application of content-based image retrieval. Based on the analysis of the practical application background, this paper proposes a new facial image retrieval scheme. In this scheme, the input query image is firstly transformed by four different methods to generate virtual samples and enlarge the training set. Moreover common vector method is applied to span the feature space for the training set whose images just belong to one class. To prove the feasibility of the scheme, a series of experiments are performed on the ORL face database.

关键词：面部形象图象处理矢量计算机技术

Arctic spring: the arrival biology of migrant birds

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动物学报 2004年第6期50卷 948-960页

作者： John C.WINGFIELD Noah OWEN-ASHLEY z.Morgan BENOWITz-FRED-ERICKS Sharon E.LYNN Thomas P.hahn Haruka WADA Creagh BRE-UNER Simone L.MEDDLE L.Michael ROMERO Department of zoology Box 351800.University of WashingtonScattleWashington 98195USA Department of zoology Box 351800University of Wsshington.Scattle.Washington 98195USA Department of Biology College of WoosterWoasterOhio 44691USA Section of Neurobiology Physiology and BehaviorUniversity of CaliforniaDavisCalifornis 95616USA Integrative Biology Patterson LabsRm 141University of TexasAustinTexas 78712USA Laboratory of Neuroendocrinology School of Biomedical and Clinical Laborstory SciencesUnivereity of Edinburgh.Hugh Robson BuildingGeorge SquareEdinbungh EH89XD.UK Department of Biology Tuftus UniversityMedfordMassachusetts 02155.USA

On arrival in the Arctic, migrant birds must adjust their physiology and behavior to unpredictable snow cover, weather, food sources and predator pressure. In other words they must be resistant to environmental perturbations (stress) so that they can migrate to their tundra nesting areas and settle on territories as soon as possible. They can then begin breeding as soon as when environmental conditions become favorable. They do this partly by using micro-habitats such as areas where snow depth is low, and patches of tundra that melt out rapidly (especially near willows Salix sp). Ground temperatures increase dramatically within hours after exposure to sun; and invertebrate activity begins simultaneously. Wind speeds are attenuated almost completely within 10 cm of the ground in willows and tussock tundra. The combination of these conditions provides an ideal refuge, especially for passerine migrants in early spring. However, if conditions worsen, the birds can leave. There are adjustments of the adrenocortical responses to stress because arctic conditions in spring are potentially severe, at least compared with wintering grounds to the south. Secretion of corticosterone in response to acute stress is enhanced at arrival in males, accompanied by a decrease in sensitivity to negative feedback and a change in responsiveness of the adrenal cortex cells to adrenocorticotropin. There is also an increase in levels of corticosterone-binding globulin (CBG) so that the actions of corticosterone are buffered according to the severity of environmental conditions. Regulation at the level of genomic receptors, particularly the low affinity glucocorticosteroid-like receptor for corticosterone in brain and liver, may be important; and non-genomic actions of corticosterone may play a major role too. In other words, the hormone-behavior system associated with arrival biology is highly flexible.

关键词： Arctic Migration Stress Adrenal Corticosterone Receptor

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内部物流的技术创新

现代制造 2008年第9期 24-24页

作者： christoph hahn-Woernle

内部物流行业与不同贸易以及特殊领域间的相互合作,在性质上存在着明显的区别,包括成套工程.控制技术.传感技术和信息技术,本篇文章内容范围涉及到各学科前沿的诸多问题,代表了技术创新的最根本基础。

关键词：技术创新物流行业成套工程控制技术信息技术传感技术学科前沿

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内部物流已经步入正轨

现代制造 2006年第33期 32-32页

作者： christoph hahn-Woernle 德国机械设备制造商联合会内部物流论坛的发言人

全球化正在不断加速,电子商务解决方案不断地在扩大,对于内部物流(intralogistics)的需求也在与日俱增。客户的新型订购方法以及较小的订货批量等各种要求给内部物流制造厂家提出了问题和挑战,迫使他们寻求新的解决方案。

关键词：物流电子商务制造厂家订货批量全球化客户

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物流技术创新带来经济发展优势

现代制造 2008年第27期 26-26页

作者： christoph hahn-Woernle CeMAT展览委员会斯图加特Viastore Systems公司

新技术的应用，让宝贵的时间、资金和环境资源得到了有效而充分的利用。无论是整机供货商，还是零部件供货商，在历届CeMAT这一物流行业的世界领先贸易博览会上都全面地展示了整个物流行业的创新成果。同时，据VDMA协会预测，德国物流行... 详细信息

新技术的应用，让宝贵的时间、资金和环境资源得到了有效而充分的利用。无论是整机供货商，还是零部件供货商，在历届CeMAT这一物流行业的世界领先贸易博览会上都全面地展示了整个物流行业的创新成果。同时，据VDMA协会预测，德国物流行业2008年的增长率可达到8％。

关键词：物流行业技术创新经济发展优势贸易博览会 CeMAT 环境资源供货商

A universal route to efficient non-linear response via Thomson scattering in linear solids

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National Science Review 2023年第7期10卷 203-212页

作者： Yongzheng Wen Flavio Giorgianni Igor Ilyakov Baogang Quan Sergey Kovalev Chen Wang Carlo Vicario Jan-christoph Deinert Xiaoyu Xiong Joe Bailey Min Chen Alexey Ponomaryov Nilesh Awari Andrea Rovere Jingbo Sun Roberto Morandotti Luca Razzari Gabriel Aeppli Junjie Li Ji zhou State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Paul Scherrer Institut Helmholtz-zentrum Dresden-Rossendorf Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Institut de Physique école Polytechnique Fédérale de Lausanne (EPFL) Institut National de la Recherche Scientifique (INRS) Centreénergie Matériaux et Télécommunications (EMT) Department of Physics and Quantum Center ETH Zürich

Non-linear materials are cornerstones of modern optics and *** dependence on the intrinsic properties of particular materials,however,inhibits the at-will extension of demanding non-linear effects,especially those second-order ones,to widely adopted centrosymmetric materials(for example,silicon) and te chnologically important burgeoning spectral domains(for example,terahertz frequencies).Here we introduce a universal route to efficient non-linear responses enabled by exciting non-linear Thomson scattering,a fundamental process in electrodynamics that was known to occur only in relativistic electrons in metamaterial composed of linear *** a mechanism modulates the trajectory of charges,either intrinsically or extrinsically provided in solids,at twice the driving frequency,allowing second-harmonic generation at terahertz frequencies on crystalline silicon with extremely large non-linear susceptibility in our proof-of-concept *** offering a substantially material-and frequency-independent platform,our approach opens new possibilities in the fields of on-demand non-linear optics,terahertz sources,strong field light-solid interactions and integrated photonic circuits.

关键词： non-linear optical materials terahertz harmonic generation Thomson scattering magneto-electric coupling metamaterial