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1024篇 您的检索式:作者名="Keil"
    题名 作者 年代 出处 被引量
1Acoustic Measurements for Determination of the Materials Damping Using A Sound Source Localisation System显示文摘Noise measurements are especially a problem when the object under investigation is largely dimensioned and can only be measured from the distance. To obtain information about the location of noise generation, a measurement technique which makes sound visible in order to introduce further specific technical measures is advantageous. The question is if the time dependence of the signal got from such a non touching and non destructive acoustic method has the potential to calculate the materials damping from. Using a small sound source localization system (Microflown TM probe), specimens of magnesium alloys with different grain sizes obtained by hydrostatic extrusion were investigated. It has been demonstrated that the fine grained microstructure led to a lower damping and its dependence on the strain was reduced. In this context, acoustic measurements by a sound source localisation system which makes materials characterization possible could be used as a quality tool to detect changes in highly stressed components. This approach allows to promote a selective substitution of conventional materials by more innovative ones. The offshore sector is considered to be a field of application: Wind turbines produce noise emission which stems mainly from turbulences at the tips of the rotor blades and vibrations of components inside the nacelle (e.g. gearbox, generator, ··· ). If the vibration amplitudes are too high, microcracks of components can lead to failure over the long term. The monitoring of microstructural changes using a larger type of a sound source localisation system is considered as an innovative technical approach with respect to maintenance activities.J. Gken J. Swiostek H. Hurdelbrink U. Keil 2013Acta Metallurgica Sinica(English Letters)2013,26,2:2
2放射性铀、铯、硒在盐环境中吸附研究显示文摘一、引言被长期贮存或处置的放射性物质能回到人类环境中来的最可能途径是通过地下水的流动,这种核素迁移的过程可能会因放射性核素和地质介质以及其他物质间相互作用而被阻滞.毛家骏 CH. Keiling G.Marx 1991核科学与工程1991,11,4:2
3Transient and sustained activity in a distributed neural system for human working memory显示文摘Courtney S M Ungerleider L Keil K 1997Nature1997,,386:1
4Electro-optic sampling using an aluminum gallium arsenide probe 显示文摘 Kopf R F Keil U D 1993Appl Phys Lett1993,62,15:1
5Efficiency and toxicity of liposome-mediated gene transfer to corneal endothelial cells显示文摘Pleyer U Groth D Hinz B Keil O Bertelmann E Rieck P 2002Exp Eye Res2002,73,1:1
6Identification and characterization of the bovine herpesvirus 1 UL7 gene and gene product which are not essential for virus replication in cell culture 显示文摘Schmitt J Keil G M 1996J Virol1996,70,2:1
7A leucine- rich repeat protein of carrot that exhibits antifreeze activity显示文摘Meyer K Keil M Naldrett M J 1999FEBS Lett1999,447,:1
8Acylphosphine oxides as photoiniators for pigmented coatings 显示文摘Beck E Keil E Lokaiet M M 1998Modern Paint and Coatings1998,88,3:1
9Lipid emulsion improves re- covery from bupivacaine-induced cardiac arrest,hut not from ropi- vacaine- or mepivacainc-induced cardiac arrest显示文摘Zausig YA Zink W Keil M 2009Anesth Analg2009,109,4:1
10Can progressive resistance training twice a week improve mobility, muscle strength, and quality of life in very elderly nursing-home residents with impaired mobility? A pilot study显示文摘Lilian Krist Fernando Dimeo Thomas Keil 2013Dovepress2013,,4:1
11Control in internal and outsourced software projects显示文摘Tiwana A Keil M 0,,03:1
12How software project risk affects project performance: An investigation of the di- mensions of risk and an exploratory model显示文摘Wallace L Keil M Rai A 2004Decision Sciences2004,35,2:1
13Understanding Software Project Risk:A Cluster Analysis显示文摘 KEIL M RAI A 2004Information and Management2004,42,1:1
14A tiered approach to deterministic models for indoor air exposures显示文摘KEIL C B 2000Applied Occupational and Environmental Hygiene2000,15,14:1
15Toxicity and microcystin content of extracts from a Planktothrix bloom and two laboratory strains显示文摘KEIL C FORCHERT A FASTNER J 2002Water Research2002,,36:1
16The response of ships to underwater explosions 显示文摘Keil A H 1961Annual Meeting of The SNAME New York1961,69,:1
17Comparing senior executive and project manager perceptions of IT project risk: A Chinese Delphi study显示文摘Liu Shan Zhang Jinlong Keil M 2010Information Systems Journal2010,20,4:1
18Identifying Software Project Risks:An International Delphi Study显示文摘 LYYTINEN K KEIL M 2001Journal of Management Information Systems2001,17,4:1
19A leucine-rich repeat protein of carrot that exhibits antifreeze activity显示文摘Meyer K Keil M Naldrett M J 1999FEBS Lett1999,447,23:1
20Corporate venture capital,disembodied experimentation and capability development显示文摘Keil T Autio E George G 2008Journal of Management Studies2008,45,8:1
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