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Neutron scattering from surfactants adsorbed at the air/water interfaceJackson, Andrew January 2003 (has links)
No description available.
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Use of time domain reflectometry to measure water content and solute-transport parameters in unsaturated soilsMojid, Mohammed Abdul January 1996 (has links)
No description available.
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Theory and application methods of time domain reflectometry/time domain transmission computed tomography (TDR/TDT CT)Li, Jian. January 2007 (has links)
Thesis ()--University of Delaware, 2007. / Principal faculty advisor: Robert G. Hunsperger, Dept. of Electrical and Computer Engineering. Includes bibliographical references.
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The Application of time domain reflectometry in solute transport experimentsYu, Chunming, January 1998 (has links) (PDF)
Thesis (Ph.D. - Hydrology and Water Resources)--University of Arizona. / Includes bibliographical references (leaves 224-236).
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Monitoring near-surface soil water loss with time domain reflectometry and weighing lysimetersYoung, Michael Howard, January 1995 (has links) (PDF)
Thesis (Ph. D - Soil, Water abd Environmental Science) - University of Arizona. / Includes bibliographical references.
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The use of time domain reflectometry (TDR) to determine and monitor non-aqueous phase liquid (NAPLs) in soilsQuafisheh, Nabil M. January 1997 (has links)
Thesis (M.S.)--Ohio University, March, 1997. / Title from PDF t.p.
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Combining Reflectometry, Ablation and Fluid Collection in a Microstructured FiberSudirman, Azizahalhakim January 2009 (has links)
<p>The purpose of the diploma work is to investigate the possibilities to combine three different areas; reflectometry, microfluidics and laser ablation in a microstructured single-mode fiber, thus obtaining a controlled technique for positioning for ablation and collection of liquids from small inclusions.</p><p>Each of the three areas is thoroughly described in different sections of this report. The first part of the experiments in this diploma work consisted of combining reflectometry and microfluidics, the second part combining reflectometry with laser ablation and the final experiment setup consisted of a combination of all three areas. An artificial system for liquid collection was then designed for that purpose.</p><p>The results obtained from experiments and measurements clearly demonstrate that combining reflectometry, laser ablation and fluid collection in a single optical fiber is promising. Future work will include improvements of the technique towards a medical application for bone marrow transplantation.</p>
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Enhanced accuracy time domain reflection and transmission measurements for IC interconnect characterizationSmolyansky, Dmitry A. 30 September 1994 (has links)
The purpose of this study is to develop accuracy enhancement techniques for the Time
Domain Reflection/Transmission (TDR/T) measurements including the analysis of the
error sources for the Enhanced Accuracy TDR/T (EA-TDR/T). These TDR/T techniques
are used for IC and IC package interconnect characterization and equivalent circuit model
extraction, which are important for evaluating the overall system performance in today's
digital IC design.
The frequency domain error correction has been used to get parameters for a
Device Under Test (DUT) from time domain measurements. The same technique can be
used as an intermediate step for obtaining the EA-TDR/T.
Careful choice of the acquisition window and precise alignment of the DUT and
calibration standard waveforms are necessary to get the accuracy enhancement for the
TDR/T. Improved FFT techniques are used in order to recover the actual spectra of the
step-like time domain waveforms acquired with an acquisition window with a finite time
length. The EA-TDR/T waveform are recovered from error corrected frequency domain
parameters of the DUT by launching an ideal excitation at the DUT and finding the response. The rise time of the ideal excitation can be faster than that of the physical excitation in the measurement system. However, excessive high-frequency noise can enter the system if the rise time of the ideal excitation is chosen to be too high.
The resulting EA-TDR/T waveforms show significantly less aberrations than the conventional TDR/T waveforms, hence allow us to extract accurate equivalent circuit model for the DUT, which in our case is IC interconnects. / Graduation date: 1995
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Characterization and electrical circuit modeling of interconnections and packages using time domain network analysisHayden, Leonard 03 June 1993 (has links)
The improved accuracy of Time Domain Reflection and Transmission (TDR/T)
measurements made possible by the calibration process known as Time Domain
Network Analysis (TDNA) is applied to the problem of characterization and modeling
of electronic interconnect and packaging structures. TDNA uses measurements of
known and partially known calibration standards to characterize the measurement
system allowing for the correction of the raw measurements of an unknown network
to eliminate the effects of system non-idealities and resulting in a significant
improvement of the measurement quality. The correction process is shown to be
analogous to the well established Frequency Domain Vector Network Analyzer
calibrations and to have the same capabilities for high precision metrology
applications.
Methods are developed to extract electrical circuit models from time domain
measurements of lossless, nonuniform, multiconductor transmission lines for two
broad classes of structures. Although unique solutions are not feasible for general
structures that scatter the propagating wave-front, approximate solutions have been
identified using the assumption of a single velocity wave-front, the case for homogeneous media. For structures with identical lines, such as a parallel line bus structure, the propagation behavior (eigenvector matrix) is determined only by the number of conductors, N, and is therefore known a priori for the entire structure allowing decoupling of the system into N orthogonal nonuniform transmission lines. Circuit models have been developed for these decoupled nonuniform lines as well as for the equal modal velocity assumption which relies on a matrix impedance profile to fully describe the system.
The implications of non-ideal grounding of interconnection circuits is explored. Traditional lumped element methods for modeling these effects are examined and typical examples where distributed circuit models are necessary to adequately describe the system are identified. Techniques for examining power-planes and substrate connections in integrated circuits and integrated circuit packages using the distributed ground model are presented. Novel circuit design methods to circumvent the limitations imposed by non-ideal grounds and nonzero length transmission structures are also proposed. / Graduation date: 1994
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Combining Reflectometry, Ablation and Fluid Collection in a Microstructured FiberSudirman, Azizahalhakim January 2009 (has links)
The purpose of the diploma work is to investigate the possibilities to combine three different areas; reflectometry, microfluidics and laser ablation in a microstructured single-mode fiber, thus obtaining a controlled technique for positioning for ablation and collection of liquids from small inclusions. Each of the three areas is thoroughly described in different sections of this report. The first part of the experiments in this diploma work consisted of combining reflectometry and microfluidics, the second part combining reflectometry with laser ablation and the final experiment setup consisted of a combination of all three areas. An artificial system for liquid collection was then designed for that purpose. The results obtained from experiments and measurements clearly demonstrate that combining reflectometry, laser ablation and fluid collection in a single optical fiber is promising. Future work will include improvements of the technique towards a medical application for bone marrow transplantation.
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