Zobrazeno 1 - 10
of 254
pro vyhledávání: '"David M Paganin"'
Autor:
Michelle K. Croughan, David M. Paganin, Samantha J. Alloo, Jannis N. Ahlers, Ying Ying How, Stephanie A. Harker, Kaye S. Morgan
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract In recent years, a novel x-ray imaging modality has emerged that reveals unresolved sample microstructure via a “dark-field image”, which provides complementary information to conventional “bright-field” images, such as attenuation a
Externí odkaz:
https://doaj.org/article/c79c16cd7eeb4ac6b4a36b9f674a79a5
Publikováno v:
Journal of Synchrotron Radiation, Vol 31, Iss 4, Pp 896-909 (2024)
Signal-to-noise ratio and spatial resolution are quantitatively analysed in the context of in-line (propagation based) X-ray phase-contrast imaging. It is known that free-space propagation of a coherent X-ray beam from the imaged object to the detect
Externí odkaz:
https://doaj.org/article/d517a2c59892424f91cf48ed7632b4e3
Autor:
Kaye S Morgan, Martin Donnelley, David M Paganin, Andreas Fouras, Naoto Yagi, Yoshio Suzuki, Akihisa Takeuchi, Kentaro Uesugi, Richard C Boucher, David W Parsons, Karen K W Siu
Publikováno v:
PLoS ONE, Vol 8, Iss 1, p e55822 (2013)
In the airways of those with cystic fibrosis (CF), the leading pathophysiological hypothesis is that an ion channel defect results in a relative decrease in airway surface liquid (ASL) volume, producing thick and sticky mucus that facilitates the est
Externí odkaz:
https://doaj.org/article/2c250819c59c4160ac35740997774c26
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-17 (2023)
Abstract The size of the smallest detectable sample feature in an x-ray imaging system is usually restricted by the spatial resolution of the system. This limitation can now be overcome using the diffusive dark-field signal, which is generated by unr
Externí odkaz:
https://doaj.org/article/c67b7326c0a14b8c8c1f0c65db0fcbf2
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-16 (2023)
Abstract Speckle-based phase-contrast X-ray imaging (SB-PCXI) can reconstruct high-resolution images of weakly-attenuating materials that would otherwise be indistinguishable in conventional attenuation-based X-ray imaging. The experimental setup of
Externí odkaz:
https://doaj.org/article/77f9dc96eb5d4c81bf07ed1d7c4c8e8b
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-1 (2024)
Externí odkaz:
https://doaj.org/article/61cd9dede07642c5b58c273c66715488
Autor:
Trey W. Guest, Richard Bean, Johan Bielecki, Sarlota Birnsteinova, Gianluca Geloni, Marc Guetg, Raimund Kammering, Henry J. Kirkwood, Andreas Koch, David M. Paganin, Grant van Riessen, Patrik Vagovič, Raphael de Wijn, Adrian P. Mancuso, Brian Abbey
Publikováno v:
Journal of Synchrotron Radiation, Vol 29, Iss 4, Pp 939-946 (2022)
Characterizing the properties of X-ray free-electron laser (XFEL) sources is a critical step for optimization of performance and experiment planning. The recent availability of MHz XFELs has opened up a range of new opportunities for novel experiment
Externí odkaz:
https://doaj.org/article/117c3a33c3644ca385b2ecafb42294b5
Autor:
Alexander Kozlov, Timur E. Gureyev, David M. Paganin, Andrew V. Martin, Carl Caleman, Harry M. Quiney
Publikováno v:
IUCrJ, Vol 7, Iss 6, Pp 1114-1123 (2020)
Resolving the electronic structure of single biological molecules in their native state was among the primary motivations behind X-ray free-electron lasers. The ultra-short pulses they produce can outrun the atomic motion induced by radiation damage,
Externí odkaz:
https://doaj.org/article/d7ffa3460cd7469c9fdc941f26e1990f
Autor:
Timur E. Gureyev, Alexander Kozlov, Yakov I. Nesterets, David M. Paganin, Andrew V. Martin, Harry M. Quiney
Publikováno v:
IUCrJ, Vol 5, Iss 6, Pp 716-726 (2018)
It is shown that the average signal-to-noise ratio (SNR) in the three-dimensional electron-density distribution of a sample reconstructed by coherent diffractive imaging cannot exceed twice the square root of the ratio of the mean total number of sca
Externí odkaz:
https://doaj.org/article/92381ebe01e0486c970b5844ed7dc28e
Autor:
Daniele Pelliccia, Margie P. Olbinado, Alexander Rack, Andrew M. Kingston, Glenn R. Myers, David M. Paganin
Publikováno v:
IUCrJ, Vol 5, Iss 4, Pp 428-438 (2018)
An experimental procedure for transmission X-ray ghost imaging using synchrotron light is presented. Hard X-rays from an undulator were divided by a beamsplitter to produce two copies of a speckled incident beam. Both beams were simultaneously measur
Externí odkaz:
https://doaj.org/article/2b621d99cc0343b9bda4618e59ba9096