Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"EspI"”.
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Electronic Speckle Pattern Interferometry (ESPI) NDE of cracks in pressure vessels with FEA modelling
… Electronic Speckle Pattern Interferometry (ESPI) is a coherent optical measurement technique that produces a contour map of the surface displacement of an object when it is stressed. The sensitivity of the techniques is of the order of half the Wavelength of light. The objective of the study …
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Vibration excitation of aerospace composite materials for defect determination using optical NDT techniques (ESPI/Shearography)
… damage in aerospace composite materials using ESPI and/or Shearography. ESPI and shearography are both laser based digital interferometric techniques used to non-destructively identify defects in small and large structures. Vibration excitation is proposed to be used as the excitation method …
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Residual Stress Measurements of Unblasted and Sandblasted Mild Steel Specimens Using X-Ray Diffraction, Strain-Gage Hole Drilling, and Electronic Speckle Pattern Interferometry (ESPI) Hole Drilling Methods
… and electronic speckle pattern interferometry (ESPI) hole drilling, and to validate the new ESPI hole drilling method by comparing its measurement results to those produced by the SGHD method. Both the XRD and SGHD methods were selected because they are accurate and well-verified approaches for …
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Beschreibung und Charakterisierung einer neuen Pathogenitätsinsel, integriert in das selC-Gen von "Locus of enterocyte effacement"-negativen, Shiga-Toxin-produzierenden Escherichia coli
… Restgenom. Zur weiteren Charakterisierung des espI-Genprodukts wurde espI subkloniert. Bei der Untersuchung von Kulturüberständen zeigte sich, dass der Subklon DH5/pzh4 ein Protein von etwa 110 kDa sezernierte. In weiteren Experimenten konnte gezeigt werden, dass die Serinprotease des Stammes …
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Tomographisch - interferometrisches Verfahren zur Vermessung und Optimierung der Schallfelder von Vielwandlersystemen für die akustisch optische Hohlstellenerkennung an historischen Wandmalereien
… Elektronischen Specklemuster-Interferometrie (ESPI) als sehr leistungsfähig. Für deren Weiterentwicklung wird ein akustisches Anregungssystem im Audiobereich mit hoher Richtwirkung benötigt. Hierfür wurde ein parametrisches System aufgebaut, bei dem gerichteter Audioschall durch nichtlineare …
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Explicitly structured physics instruction
… of Explicitly Structured Physics Instruction (ESPI) was developed to teach problem solving skills explicitly. It is designed to help students organize their work, increase their accuracy, eliminate initial panic or lack of direction in approaching a problem, increase confidence in problem …
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An experimental and finite element analysis of the thermal deformation of an open sleeve piston
… study on the use of the holographic method and ESPI (electronic speckle pattern interferometry) for the measurement of piston deformation has also been carried out. In this part of the study, a simplified ESPI method was used for measuring two displacement components simultaneously using an …
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Speckle-Messtechniken mit unterschiedlicher Kohärenz zur Diagnostik des mechanischen Verhaltens geschichteter historischer Farbaufträge auf Kulturgütern
… führt. Es werden Messungen mit einem Mikroskop-ESPI-System durchgeführt (Electronic Speckle Pattern Interferometry), mit dem Verformungsgebiete mit einem Durchmesser von einigen 10 mym aufgelöst werden können. Um das System besonders für schnell auftretende Verformungen nutzen zu können, wird …
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Regulation of mitotic exit in Saccharomyces cerevisiae
… FEAR network consists of at least two branches. ESPI and SLK19 function in parallel to SP012 and FOBI. I then characterized the Spol2-Fobl branch in detail. My results suggest that Fobl prevents Cdc14 activation prior to anaphase.
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Optical measurement of deformation fields and surface processes with digital speckle correlation
… comparable to interferometric techniques (e.g. ESPI). In the second part, different theoretical approaches to describe the scattering at random rough surfaces, including perturbation theory, Kirchhoff theory and the two-scale model, are advanced to determine the correlation of the scattered …
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Quantitative analysis of axon elongation : a novel application of stochastic modeling techniques to long-term, high-resolution time-lapse microscopy of cortical axons
Axons exhibit a rich variety of behaviors, such as elongation, turning, branching, and fasciculation, all in service of the complex goal of wiring up the brain. In order to quantify these behaviors, I have developed a system for in vitro imaging of axon growth cones with time-lapse fluorescence …