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pro vyhledávání: '"Romain D. Arnal"'
Autor:
Romain D, Arnal, Rick P, Millane
Publikováno v:
Acta Crystallographica Section A Foundations and Advances. 78:249-261
Filamentary and rod-like assemblies are ubiquitous in biological systems, and single such assemblies can form one-dimensional (1D) crystals. New, intense X-ray sources, such as X-ray free-electron lasers, make it feasible to measure diffraction data
Publikováno v:
IVCNZ
X-ray free-electron lasers (XFELs) are opening new frontiers in structural biology. The extreme brilliance of these highly coherent X-ray sources allows for ever smaller crystals to be used while still being able to diffract enough photons to provide
Publikováno v:
Acta Crystallographica Section A Foundations and Advances. 74:537-544
Phasing of diffraction data from two-dimensional crystals using only minimal molecular envelope information is investigated by simulation. Two-dimensional crystals are an attractive target for studying membrane proteins using X-ray free-electron lase
Publikováno v:
IVCNZ
The crystallographic phase problem is routinely solved when imaging small molecules but remains a key component and difficult step in protein crystallography. Current phasing approaches are either experimentally based or rely on the knowledge of an h
Publikováno v:
IVCNZ
Many inverse problems in imaging involve solving an optimization problem. In many cases, the problem is high-dimensional and non-convex, requiring the solution of a difficult, non-convex, global optimization problem. Such problems can be made tractab
Autor:
Estelle Mossou, David H. Wojtas, P. Lourdu Xavier, Carolin Seuring, V. Trevor Forsyth, Rick P. Millane, Romain D. Arnal, Henry N. Chapman, Alke Meents, Anton Barty, Kartik Ayyer, Miriam Barthelmess, Gisel Pena
Publikováno v:
2018 International Conference on Image and Vision Computing New Zealand (IVCNZ)
IVCNZ
IVCNZ
The application of a new generation of x-ray sources called X-ray Free Electron Lasers (XFELs) to diffractive imaging has allowed structural studies of specimens not previously accessible. Specimens of reduced crystallinity are of particular interest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c69d93947e4d2b0f441e49293e5308c1
https://hdl.handle.net/21.11116/0000-0003-446A-A21.11116/0000-0003-446C-8
https://hdl.handle.net/21.11116/0000-0003-446A-A21.11116/0000-0003-446C-8
Autor:
Romain D. Arnal, Rick P. Millane
Publikováno v:
Acta crystallographica. Section A, Foundations and advances. 73(Pt 6)
Properties of the phase problem for two-dimensional crystals are examined. This problem is relevant to protein structure determination using diffraction from two-dimensional crystals that has been proposed using new X-ray free-electron laser sources.
Autor:
Rick P. Millane, Romain D. Arnal
Publikováno v:
IVCNZ
The phase problem is a main limitation in diffraction imaging. Uniqueness properties of the phase problem are important, and are well characterised for well-sampled Fourier amplitude data. Here we consider uniqueness of the phase problem is cases whe
Publikováno v:
IVCNZ
X-ray free-electron lasers are new x-ray sources that are revolutionising high resolution molecular imaging. These sources produce extremely bright and extremely brief x-ray pulses that can overcome limitations of crystal growth and radiation damage
Autor:
Oleksandr Yefanov, Rick P. Millane, Romain D. Arnal, Phil Bones, Joe P. J. Chen, John C. H. Spence, Richard Bean, Andrew J. Morgan, Richard A. Kirian, David H. Wojtas, Kenneth R. Beyerlein, Henry N. Chapman
Publikováno v:
SPIE Proceedings.
Serial femtosecond nanocrystallography (SFX) is a form of x-ray coherent diffraction imaging that utilises a stream of tiny nanocrystals of the biological assembly under study, in contrast to the larger crystals used in conventional x-ray crystallogr