http://journals.iucr.org/a/journalhomepage.html Acta Crystallographica Section A: Foundations of Crystallography publishes articles reporting fundamental advances in all areas of crystallography in the broadest sense. This includes metacrystals such as photonic or phononic crystals, i.e. structures on the meso- or macroscale that can be studied with crystallographic methods. The central themes are, on the one hand, experimental and theoretical studies of the properties and arrangements of atoms, ions and molecules in condensed matter, periodic, quasiperiodic or amorphous, ideal or real, and, on the other, the theoretical and experimental aspects of the various methods to determine these properties and arrangements. In the case of metacrystals, the focus is on the methods for their creation and on the structure-property relationships for their interaction with classical waves. en-gb Copyright (c) 2013 International Union of Crystallography International Union of Crystallography International Union of Crystallography http://journals.iucr.org urn:issn:0108-7673 Acta Crystallographica Section A: Foundations of Crystallography publishes articles reporting fundamental advances in all areas of crystallography in the broadest sense. This includes metacrystals such as photonic or phononic crystals, i.e. structures on the meso- or macroscale that can be studied with crystallographic methods. The central themes are, on the one hand, experimental and theoretical studies of the properties and arrangements of atoms, ions and molecules in condensed matter, periodic, quasiperiodic or amorphous, ideal or real, and, on the other, the theoretical and experimental aspects of the various methods to determine these properties and arrangements. In the case of metacrystals, the focus is on the methods for their creation and on the structure-property relationships for their interaction with classical waves. text/html Acta Crystallographica Section A Foundations of Crystallography text daily 1 2002-01-01T00:00+00:00 med@iucr.org Acta Crystallographica Section A Foundations of Crystallography Copyright (c) 2013 International Union of Crystallography urn:issn:0108-7673 http://journals.iucr.org/logos/rss10a.gif http://journals.iucr.org/a/journalhomepage.html Still image http://journals.iucr.org/a/services/forthcoming.html#eo5024 A method is presented that will facilitate the determination of the subgroup structure of crystallographic Coxeter groups, including determining torsion free subgroups. Copyright (c) 2013 International Union of Crystallography urn:issn:0108-7673 Eden Delight B. Provido et al. doi: International Union of Crystallography A method is presented that will facilitate the determination of the subgroup structure of crystallographic Coxeter groups, including determining torsion free subgroups. en CRYSTALLOGRAPHIC COXETER GROUPS; CRYSTALLOGRAPHIC GROUPS; SUBGROUPS OF CRYSTALLOGRAPHIC GROUPS; TORSION FREE SUBGROUPS; COLOR SYMMETRY A method is presented that will facilitate the determination of the subgroup structure of crystallographic Coxeter groups, including determining torsion free subgroups. text/html On Subgroups of Crystallographic Coxeter Groups text http://journals.iucr.org/a/services/forthcoming.html#eo5023 Copyright (c) 2013 International Union of Crystallography urn:issn:0021-8898 W. Cocke doi: International Union of Crystallography en ; ; ; text/html Nonequivalent Periodic Subsets of the Lattice text http://journals.iucr.org/a/services/forthcoming.html#eo5022 The symmetry group of two special types of carbon nanotori is studied using a group-theoretical result. Copyright (c) 2013 International Union of Crystallography urn:issn:0108-7673 Staic and Petrescu-Nita doi:10.1107/S0108767313010325 International Union of Crystallography The symmetry group of two special types of carbon nanotori is studied using a group-theoretical result. en CARBON NANOTORI; CAYLEY HYPERGRAPHS The symmetry group of two special types of carbon nanotori is studied using a group-theoretical result. text/html Symmetry group of two special types of carbon nanotori text http://journals.iucr.org/a/services/forthcoming.html#td5013 Computer control of beam tilt and image capture allows the collection of electron diffraction patterns over a large angular range, without any overlap in diffraction data and from a region limited only by the size of the electron beam. This results in a significant improvement in data volumes and ease of interpretation. Copyright (c) 2013 International Union of Crystallography urn:issn:0108-7673 Richard Beanland et al. doi:10.1107/S0108767313010143 International Union of Crystallography Computer control of beam tilt and image capture allows the collection of electron diffraction patterns over a large angular range, without any overlap in diffraction data and from a region limited only by the size of the electron beam. This results in a significant improvement in data volumes and ease of interpretation. en ELECTRON DIFFRACTION; SYMMETRY DETERMINATION; CBED; LACBED; COMPUTER CONTROL Computer control of beam tilt and image capture allows the collection of electron diffraction patterns over a large angular range, without any overlap in diffraction data and from a region limited only by the size of the electron beam. This results in a significant improvement in data volumes and ease of interpretation. text/html Digital electron diffraction – seeing the whole picture text http://journals.iucr.org/a/services/forthcoming.html#sc5059 The tolerance of δ recycling phases to missing data-collection corrections and to deviations from kinematical behaviour of electron ADT intensities is analysed in detail. It has been found that Wilson-plot scaling is largely insensitive to sample thickness variations and missing absorption corrections. Copyright (c) 2013 International Union of Crystallography urn:issn:0108-7673 Jordi Rius et al. doi:10.1107/S0108767313009549 International Union of Crystallography The tolerance of δ recycling phases to missing data-collection corrections and to deviations from kinematical behaviour of electron ADT intensities is analysed in detail. It has been found that Wilson-plot scaling is largely insensitive to sample thickness variations and missing absorption corrections. en [DELTA] RECYCLING; DIRECT METHODS; STRUCTURE SOLUTION; ELECTRON DIFFRACTION; AUTOMATED DIFFRACTION TOMOGRAPHY; NANO ELECTRON DIFFRACTION; PRECESSION ELECTRON DIFFRACTION; NANOCRYSTALS The tolerance of δ recycling phases to missing data-collection corrections and to deviations from kinematical behaviour of electron ADT intensities is analysed in detail. It has been found that Wilson-plot scaling is largely insensitive to sample thickness variations and missing absorption corrections. text/html Application of δ recycling to electron automated diffraction tomography data from inorganic crystalline nanovolumes text http://journals.iucr.org/a/services/forthcoming.html#eo5021 ∊-Machine spectral reconstruction theory, a method for finding planar disorder in close-packed structures, is applied to four simulated diffraction patterns. Copyright (c) 2013 International Union of Crystallography urn:issn:0108-7673 D. P. Varn et al. doi:10.1107/S0108767313008738 International Union of Crystallography ∊-Machine spectral reconstruction theory, a method for finding planar disorder in close-packed structures, is applied to four simulated diffraction patterns. en X-RAY DIFFRACTION; DIFFUSE SCATTERING; ONE-DIMENSIONAL DISORDER; POLYTYPES; PLANAR FAULTS; COMPUTATIONAL MECHANICS ∊-Machine spectral reconstruction theory, a method for finding planar disorder in close-packed structures, is applied to four simulated diffraction patterns. text/html Inferring planar disorder in close-packed structures via ∊-machine spectral reconstruction theory: examples from simulated diffraction patterns text http://journals.iucr.org/a/services/forthcoming.html#pc5026 A new statistical interpretation of the σA parameter is provided. Copyright (c) 2013 International Union of Crystallography urn:issn:0108-7673 B. Carrozzini et al. doi:10.1107/S010876731300768X International Union of Crystallography A new statistical interpretation of the σA parameter is provided. en [SIGMA]A ESTIMATE; JOINT PROBABILITY DISTRIBUTION APPROACH; STRUCTURE-FACTOR DISTRIBUTIONS; CORRELATION FACTORS A new statistical interpretation of the σA parameter is provided. text/html A new interpretation of the σA parameter text http://journals.iucr.org/a/services/forthcoming.html#pc5025 A tabulation of complete irreducible representations at all k points of three-dimensional crystallographic space groups and their extensions to (3 + d)-dimensional superspace groups is presented. Copyright (c) 2013 International Union of Crystallography urn:issn:0108-7673 Harold T. Stokes et al. doi:10.1107/S0108767313007538 International Union of Crystallography A tabulation of complete irreducible representations at all k points of three-dimensional crystallographic space groups and their extensions to (3 + d)-dimensional superspace groups is presented. en IRREDUCIBLE REPRESENTATIONS; SPACE GROUPS; DISTORTIONS; ORDER PARAMETER A tabulation of complete irreducible representations at all k points of three-dimensional crystallographic space groups and their extensions to (3 + d)-dimensional superspace groups is presented. text/html Tabulation of irreducible representations of the crystallographic space groups and their superspace extensions text http://journals.iucr.org/a/services/forthcoming.html#pf0109 Copyright (c) 2013 International Union of Crystallography urn:issn:0108-7673 Massimo Nespolo doi:10.1107/S0108767313006624 International Union of Crystallography en BOOK REVIEW text/html Crystallography – An Introduction, 3rd ed. By Walter Borchardt-Ott. Springer, 2012. Pp. xvi + 357. Price (paperback) EUR 42.75. ISBN 978-3-642-16451-4. text http://journals.iucr.org/a/services/forthcoming.html#mq5011 Sir W. H. Bragg was an outstanding teacher capable of exciting the minds of intelligent young people and addressing them to science in general and chemistry in particular. Both Primo Levi, a well known Italian writer, and Dorothy Hodgkin, Nobel laureate for her pioneering work in crystallography, decided that they would become chemists after reading, at the age of sixteen, Bragg's book Concerning the Nature of Things. Copyright (c) 2013 International Union of Crystallography urn:issn:0108-7673 Davide Viterbo doi:10.1107/S0108767313006508 International Union of Crystallography Sir W. H. Bragg was an outstanding teacher capable of exciting the minds of intelligent young people and addressing them to science in general and chemistry in particular. Both Primo Levi, a well known Italian writer, and Dorothy Hodgkin, Nobel laureate for her pioneering work in crystallography, decided that they would become chemists after reading, at the age of sixteen, Bragg's book Concerning the Nature of Things. en PRIMO LEVI; WILLIAM HENRY BRAGG; ATOMIC THEORY OF MATTER Sir W. H. Bragg was an outstanding teacher capable of exciting the minds of intelligent young people and addressing them to science in general and chemistry in particular. Both Primo Levi, a well known Italian writer, and Dorothy Hodgkin, Nobel laureate for her pioneering work in crystallography, decided that they would become chemists after reading, at the age of sixteen, Bragg's book Concerning the Nature of Things. text/html Primo Levi, William Henry Bragg and the atomic theory of matter text http://journals.iucr.org/a/services/forthcoming.html#dm5032 By using Lie group theory, the symmetry of displacively modulated structures may be described in the usual three-dimensional space. Moreover, when calculating the Fourier transform of such crystals, the structure factor may be clearly exhibited without requiring additional dimensions. Copyright (c) 2013 International Union of Crystallography urn:issn:0108-7673 Philippe Kocian doi:10.1107/S0108767313005990 International Union of Crystallography By using Lie group theory, the symmetry of displacively modulated structures may be described in the usual three-dimensional space. Moreover, when calculating the Fourier transform of such crystals, the structure factor may be clearly exhibited without requiring additional dimensions. en MODULATED STRUCTURES; LIE GROUPS; STRUCTURE FACTORS By using Lie group theory, the symmetry of displacively modulated structures may be described in the usual three-dimensional space. Moreover, when calculating the Fourier transform of such crystals, the structure factor may be clearly exhibited without requiring additional dimensions. text/html Incommensurate crystallography without additional dimensions text http://journals.iucr.org/a/services/forthcoming.html#sc5058 Ab initio model reconstruction from fluctuation X-ray scattering data is described. Copyright (c) 2013 International Union of Crystallography urn:issn:0108-7673 Haiguang Liu et al. doi:10.1107/S0108767313006016 International Union of Crystallography Ab initio model reconstruction from fluctuation X-ray scattering data is described. en THREE-DIMENSIONAL ZERNIKE POLYNOMIALS; FLUCTUATION X-RAY SCATTERING; FEMTOSECOND X-RAY DIFFRACTION; STRUCTURE Ab initio model reconstruction from fluctuation X-ray scattering data is described. text/html Three-dimensional single-particle imaging using angular correlations from X-ray laser data text