Searched for: subject:"scattering"
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Fang, H. (author)
Solid-state phase transformations in steels cover a broad range of aspects. The underlying physics behind these phase transformations usually include nucleation, diffusion, lattice reconstruction and interactions between solutes and grain boundaries and interfaces. These features and the fact that the events take place at high temperatures, in...
doctoral thesis 2019
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Dadisman, Ryan (author), Shen, Jiazhou (author), Feng, Hao (author), Crow, Lowell (author), Jiang, Chenyang (author), Wang, Tianhao (author), Zhang, Yuxuan (author), Bilheux, Hassina (author), Parnell, S. (author), More Authors (author)
Several methods of polarized neutron scattering call for a zero magnetic field (ZF) region to reduce magnetic field integral aberrations while preserving the neutron polarization. Though the design for large angle neutron scattering has been presented in various places, the design characterization and tuning has not been discussed before. In...
journal article 2019
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Karuna, A. (author), Masia, Francesco (author), Wiltshire, Marie (author), Errington, Rachel (author), Borri, Paola (author), Langbein, Wolfgang (author)
Quantitative determination of the chemical composition of unstained samples, non-invasively, with high three- dimensional spatio-temporal resolution, will accelerate progress in cell biology. The current state of the art in bioimaging is dominated by either chemically non-specific or invasive methods. In this work, we demonstrate label-free,...
conference paper 2019
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Leijsen, R.L. (author), Fuchs, P.S. (author), Brink, W. (author), Webb, A. (author), Remis, R.F. (author)
The main objective of electrical-property tomography (EPT) is to retrieve dielectric tissue parameters from B <sub>1</sub> <sup>+</sup> data as measured by a magnetic-resonance (MR) scanner. This is a so-called hybrid inverse problem in which data are defined inside the reconstruction domain of interest. In this paper, we discuss recent and...
journal article 2019
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Li, Fankang (author), Shen, Jiazhou (author), Parnell, S. (author), Thaler, Alex N. (author), Matsuda, Masaaki (author), Keller, Thomas (author), Delaire, Olivier (author), Pynn, Roger (author), Fernandez-Baca, Jaime A. (author)
The energy resolution of the conventional way of measuring a small change in a phonon dispersion curve using neutron scattering is restricted by the relatively coarse intrinsic resolution ellipsoid of the neutron triple-axis spectrometer (TAS). By implementing inelastic neutron spin echo on the host TAS using the Larmor precession of the...
journal article 2019
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Iashina, Ekaterina G. (author), Filatov, Mikhail V. (author), Pantina, Rimma A. (author), Varfolomeeva, Elena Y. (author), Bouwman, W.G. (author), Duif, C.P. (author), Honecker, Dirk (author), Pipich, Vitaliy (author), Grigoriev, Sergey V. (author)
This paper reports on the two-scale fractal structure of chromatin organization in the nucleus of the HeLa cell. Two neutron scattering methods, small-angle neutron scattering (SANS) and spin-echo SANS, are used to unambiguously identify the large-scale structure as being a logarithmic fractal with the correlation function (r) - ln(r/E). The...
journal article 2019
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Yang, M. (author), Lopez Dekker, J.F. (author), Dheenathayalan, P. (author), Biljecki, Filip (author), Liao, Mingsheng (author), Hanssen, R.F. (author)
Persistent scatterers (PSs) are coherent measurement points obtained from time series of satellite radar images, which are used to detect and estimate millimeter-scale displacements of the terrain or man-made structures. However, associating these measurement points with specific physical objects is not straightforward, which hampers the...
journal article 2019
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Zheng, Siming (author), Antonini, A. (author), Zhang, Yongliang (author), Greaves, Deborah (author), Miles, Jon (author), Iglesias, Gregorio (author)
The integration of oscillating water column (OWC) wave energy converters into a coastal structure (breakwater, jetty, pier, etc.) or, more generally, their installation along the coast is an effective way to increase the accessibility of wave power exploitation. In this paper, a theoretical model is developed based on the linear potential flow...
journal article 2019
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Prins, Peter J. (author), Wahls, S. (author)
Several non-linear fluid mechanical processes, such as wave propagation in shallow water, are known to generate solitons: localized waves of translation. Solitons are often hidden in a wave packet at the beginning and only reveal themselves in the far-field. With a special signal processing technique known as the non-linear Fourier transform ...
journal article 2019
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Haji Heidari Varnosfaderani, Mehdi (author), Mozaffarzadeh, M. (author), Upputuri, Paul Kumar (author), Pramanik, Manojit (author)
Traditional optical devices rely on light propagation along a straight path. However, when the light propagates through a blurred medium, its direction get scattered by microscopic particles. This inhomogeneous distortion results in a diffused focus point. Light scattering is one of the main limitations for the optical imaging. This...
conference paper 2019
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Ioannidou, C. (author), Arechabaleta Guenechea, Z. (author), Navarro Lopez, A. (author), Rijkenberg, Arjan (author), Dalgliesh, Robert M. (author), Kölling, S. (author), Bliznuk, Vitaliy (author), Pappas, C. (author), Sietsma, J. (author), van Well, A.A. (author), Offerman, S.E. (author)
The precipitation kinetics of vanadium carbides and its interaction with the austenite-to-ferrite phase transformation is studied in two micro-alloyed steels that differ in vanadium and carbon concentrations by a factor of two, but have the same vanadium-to-carbon atomic ratio of 1:1. Dilatometry is used for heat-treating the specimens and...
journal article 2019
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Gaida, T.C. (author), Ali, Tengku Afrizal Tengku (author), Snellen, M. (author), Amiri Simkooei, A. (author), van Dijk, T.A.G.P. (author), Simons, D.G. (author)
Multi-frequency backscatter data collected from multibeam echosounders (MBESs) is increasingly becoming available. The ability to collect data at multiple frequencies at the same time is expected to allow for better discrimination between seabed sediments. We propose an extension of the Bayesian method for seabed classification to multi...
journal article 2018
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Wei, L. (author)
doctoral thesis 2018
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Chimot, J.J. (author)
The main objective of this thesis is to design a new aerosol layer height retrieval in order to improve the operational NO2 retrieval, both in the troposphere, from space-borne instruments for highly polluted events and under cloud-free conditions. This thesis focuses on the exploitation of the OMI satellite measurements acquired in the visible...
doctoral thesis 2018
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Lindner, F. (author), Weemstra, C. (author), Walter, F. (author), Hadziioannou, C. (author)
In seismology, coda wave interferometry (CWI) is an effective tool to monitor time-lapse changes using later arriving, multiply scattered coda waves. Typically, CWI relies on an estimate of the medium's impulse response. The latter is retrieved through simple time-averaging of receiver-receiver cross-correlations of the ambient field, that is...
journal article 2018
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Mirebeau, I. (author), Martin, N (author), Deutsch, M. (author), Bannenberg, L.J. (author), Pappas, C. (author), Chaboussant, G. (author), Cubitt, R (author), Decorse, C. (author), Leonov, A.O. (author)
journal article 2018
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Meles, G.A. (author), Wapenaar, C.P.A. (author), Thorbecke, J.W. (author)
Marchenko redatuming is a novel scheme used to retrieve up- and downgoing Green's functions in an unknown medium.Marchenko equations are based on reciprocity theorems and are derived on the assumption of the existence of functions exhibiting space-time focusing properties once injected in the subsurface. In contrast to interferometry but...
journal article 2018
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Sadykov, Ravil (author), Pappas, C. (author), Bannenberg, L.J. (author), Dalgliesh, Robert M. (author), Falus, Péter (author), Goodway, Christopher (author), Lelièvre-Berna, Eddy (author)
We have developed and realised a compact high-pressure clamp cell of the piston-cylinder type for Small Angle Neutron Scattering (SANS) and Neutron Spin Echo (NSE) spectroscopy measurements. The cell can pressurise φ5 mm samples up to 1.5 GPa. It is non-magnetic, produces a sufficiently low and flat SANS background with a relatively good...
journal article 2018
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Kol, T.R. (author)
The ubiquity of large virtual worlds and their growing complexity in computer graphics require efficient representations. This means that we need smart solutions for the underlying storage of these complex environments, but also for their visualization. How the virtual world is best stored and how it is subsequently shown to the user in an...
doctoral thesis 2018
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Harmankaya, U (author), Kaslilar, A. (author), Wapenaar, C.P.A. (author), Draganov, D.S. (author)
Unexpected geological structures can cause safety and economic risks during underground excavation. Therefore, predicting possible geological threats while drilling a tunnel is important for operational safety and for preventing expensive standstills. Subsurface information for tunneling is provided by exploratory wells and by surface...
journal article 2018
Searched for: subject:"scattering"
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