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X-ray crystallography is the experimental science determining the atomic and molecular structure of a crystal, in which the crystalline structure causes a beam of incident X-rays to diffract into many specific directions. By measuring the angles and intensities of these diffracted beams, a crystallographer can produce a three-dimensional picture of the density of electrons within the crystal. From this electron density, the positions of the atoms in the crystal can be determined, as well as their chemical bonds, crystallographic disorder, and various other information.
Olga Kennard, Lady Burgen was a Hungarian-born British scientist who specialised in crystallography. She was the founder of the Cambridge Crystallographic Data Centre.
Michael Mark Woolfson was a British physicist and planetary scientist. His research interests were in the fields of x-ray crystallography, biophysics, colour vision and the formation of stars and planets.
Crystallographic Information File (CIF) is a standard text file format for representing crystallographic information, promulgated by the International Union of Crystallography (IUCr). CIF was developed by the IUCr Working Party on Crystallographic Information in an effort sponsored by the IUCr Commission on Crystallographic Data and the IUCr Commission on Journals. The file format was initially published by Hall, Allen, and Brown and has since been revised, most recently versions 1.1 and 2.0. Full specifications for the format are available at the IUCr website. Many computer programs for molecular viewing are compatible with this format, including Jmol.
Multi-wavelength anomalous diffraction is a technique used in X-ray crystallography that facilitates the determination of the three-dimensional structure of biological macromolecules via solution of the phase problem.
Nikolay Vasilyevich Belov was a Soviet and Russian crystallographer, geochemist, academician (1953), and Hero of Socialist Labour (1969).
The International Union of Crystallography (IUCr) is an organisation devoted to the international promotion and coordination of the science of crystallography. The IUCr is a member of the International Council for Science (ICSU).
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Andrew Richard Lang FRS CBE was a British scientist and crystallographer.
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Quantum crystallography is a branch of crystallography that investigates crystalline materials within the framework of quantum mechanics, with analysis and representation, in position or in momentum space, of quantities like wave function, electron charge and spin density, density matrices and all properties related to them. Like the quantum chemistry, Quantum crystallography involves both experimental and computational work. The theoretical part of quantum crystallography is based on quantum mechanical calculations of atomic/molecular/crystal wave functions, density matrices or density models, used to simulate the electronic structure of a crystalline material. While in quantum chemistry, the experimental works mainly rely on spectroscopy, in quantum crystallography the scattering techniques play the central role, although spectroscopy as well as atomic microscopy are also sources of information.
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Durward William John Cruickshank, often known as D. W. J. Cruickshank, was a British crystallographer whose work transformed the precision of determining molecular structures from X-ray crystal structure analysis. He developed the theoretical framework for anisotropic displacement parameters, also known as the thermal ellipsoid, for crystal structure determination in a series of papers published in 1956 in Acta Crystallographica.
This is a timeline of crystallography.
Ross John Angel is an internationally recognized researcher in mineralogy, expert in crystallography and elastic properties of geological materials and key industrial materials, which he studies with experimental and analytical approaches. He is the lead author or co-author of over 240 articles in international scientific journals, he received the Dana Medal from the Mineralogical Society of America in 2011 and is currently a director of research at the Institute of Geosciences and Geo-resources of the National Research Council (Italy).
The German Crystallographic Society is a non-profit organization based in Berlin. As a voluntary association of scientists working in crystallography or interested in crystallography and other people and institutions, its goal is to promote crystallography in teaching, research and industrial practice as well as in the public, in particular by fostering the exchange of experience and ideas as well as further education at national and international level Frame. Working groups are dedicated to specific areas of crystallography. The Society has just over 1000 members.
References
- ↑ "Life story interview with John Helliwell, crystallographer". Oral history of British science. British Library.
- ↑ "Memoir - John R. Helliwell"
- ↑ "Prof John Helliwell DSc"
- ↑ "PDB depositions authored by John R. Helliwell"
- ↑ "John R. Helliwell, ALBA SAC Chair, Awarded with the 2014 ACA Patterson Prize"
- ↑ "John R. Helliwell Awarded The Max Perutz Prize"
- ↑ The Eighth Max Perutz Prize of the European Crystallographic Association
- ↑ International Union of Crystallography (2000). "Professor K. Banerjee Endowment Lecture Silver Medal". Journal of Applied Crystallography . 33 (6): 1450. doi: 10.1107/S0021889800017672 .
- ↑ Helliwell, J.R. (2002). "New opportunities in biological and chemical crystallography". Journal of Synchrotron Radiation . 9 (1): 1–8. doi:10.1107/S0909049501018465. hdl: 10821/5714 .
- ↑ "Honorary members of the National Institute of Chemistry"
- ↑ "Fellows of the American Crystallographic Association | Class of 2015"
- ↑ "About the British Biophysical Society"
- ↑ "Honorary Members of the BCA"
- ↑ "The Academy - Reial Acadèmia de Ciències i Arts de Barcelona"
- 1 2 "World Directory of Crystallographers - Professor John Richard Helliwell"
- ↑ International Union of Crystallography (1996). "New Editor-in-Chief of IUCr journals". Journal of Applied Crystallography . 29 (5): 614. doi: 10.1107/S002188989609961X .
- ↑ "Committee on Data"
- ↑ "Composition of ECA Executive Committees"
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