Výsledky vyhledávání - "D B Williams"

Theory of rotational columnar structures of soft spheres

Autor: D. B. Williams, Denis Weaire, Adil Mughal, Stefan Hutzler, J. Winkelmann

Publikováno v: Physical Review E. 99

There is a growing interest in cylindrical structures of hard and soft particles. A promising new method to assemble such structures has recently been introduced by Lee et al. [T. Lee, K. Gizynski, and B. Grzybowski, Adv. Mater. 29, 1704274 (2017)].

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6687d808cf9daaa24d9c8be17421e027
https://doi.org/10.1103/physreve.99.020602

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Optimization of image acquisition techniques for dual-energy imaging of the chest

Autor: R. Van Metter, Jeffrey H. Siewerdsen, Samuel Richard, A. C. Dhanantwari, John Yorkston, N. A. Shkumat, D. B. Williams, Narinder Paul

Publikováno v: Medical Physics. 34:3904-3915

Experimental and theoretical studies were conducted to determine optimal acquisition techniques for a prototype dual-energy (DE) chest imaging system. Technique factors investigated included the selection of added x-ray filtration, kVp pair, and the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9aca662e0f99bb1df39cf89fad33b921
https://doi.org/10.1118/1.2777278

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Optimal kVp selection for dual-energy imaging of the chest: Evaluation by task-specific observer preference tests

Autor: A. C. Dhanantwari, Jeffrey H. Siewerdsen, Daniel J. Tward, John Yorkston, D. B. Williams, Samuel Richard, N. A. Shkumat, Narinder Paul, R. Van Metter

Publikováno v: Medical Physics. 34:3916-3925

Human observer performance tests were conducted to identify optimal imaging techniques in dual-energy (DE) imaging of the chest with respect to a variety of visualization tasks for soft and bony tissue. Specifically, the effect of kVp selection in lo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::28934a54bece602cfece5740f455fbc5
https://doi.org/10.1118/1.2776239

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Improvements in the X-Ray Analytical Capabilities of a Scanning Transmission Electron Microscope by Spherical-Aberration Correction

Autor: Niklas Dellby, D. B. Williams, Z.S. Szilagyi, Christopher J. Kiely, Ondrej L. Krivanek, Andrew Burrows, Masashi Watanabe, M.F. Murfitt, D.W. Ackland

Publikováno v: Microscopy and Microanalysis. 12:515-526

A Nion spherical-aberration (Cs) corrector was recently installed on Lehigh University's 300-keV cold field-emission gun (FEG) Vacuum Generators HB 603 dedicated scanning transmission electron microscope (STEM), optimized for X-ray analysis of thin s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ebd4b8883d20f3794f5b5861c60122f
https://doi.org/10.1017/s1431927606060703

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Quantitative characterization of nanoprecipitates in irradiated low-alloy steels: advances in the application of FEG-STEM quantitative microanalysis to real materials

Autor: D. B. Williams, Jonathan M. Hyde, Masashi Watanabe, M.G. Burke

Publikováno v: Journal of Materials Science. 41:4512-4522

The characterization of the solute-enriched features (clusters or nanoprecipitates in irradiated low-alloy steels) requires extremely high spatial and elemental resolution, previously necessitating analysis using atom probe field-ion microscopy. In t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8c0d9e2a1d80f35d7485a6212bcd8eba
https://doi.org/10.1007/s10853-006-0084-x

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