mathematical crystallography
foundations
Acta Cryst. (2014). A70, 95-105 [ doi:10.1107/S2053273313033573 ] Prospects for mathematical crystallographyG. McColmSynopsis: Considered as an emerging field, how mathematical crystallography grows during the 21st century may depend on how it addresses demand and attracts recruits within the chemical, physical and mathematical communities. Online 12 February 2014 |
Acta Cryst. (2014). A70, 106-125 [ doi:10.1107/S2053273313029082 ] Effects of merohedric twinning on the diffraction patternM. Nespolo, G. Ferraris and B. SouvignierSynopsis: The effect of merohedric twinning on the reflection conditions and the symmetry of the diffraction pattern is analysed systematically and criteria to confirm or exclude the presence of twinning are presented. Online 12 February 2014 |
Acta Cryst. (2014). A70, 126-137 [ doi:10.1107/S205327331303091X ] Brillouin-zone database on the Bilbao Crystallographic ServerM. I. Aroyo, D. Orobengoa, G. de la Flor, E. S. Tasci, J. M. Perez-Mato and H. WondratschekSynopsis: The Brillouin-zone database of the Bilbao Crystallographic Server (http://www.cryst.ehu.es) is presented. Recent improvements and modifications of the database are discussed and illustrated by several examples. Online 12 February 2014 |
Acta Cryst. (2014). A70, 138-142 [ doi:10.1107/S2053273313033585 ] On physical property tensors invariant under line groupsD. B. LitvinSynopsis: Materials invariant under infinite subsets of line groups are shown to have physical property tensors of the same form. Online 18 February 2014 |
Acta Cryst. (2014). A70, 143-153 [ doi:10.1107/S2053273313032038 ] Direct phasing in femtosecond nanocrystallography. I. Diffraction characteristicsJ. P. J. Chen, J. C. H. Spence and R. P. MillaneSynopsis: The diffraction of X-ray free-electron laser pulses by protein nanocrystals and the implications for direct phasing are investigated. Online 15 January 2014 |
Acta Cryst. (2014). A70, 154-161 [ doi:10.1107/S2053273313032725 ] Direct phasing in femtosecond nanocrystallography. II. Phase retrievalJ. P. J. Chen, J. C. H. Spence and R. P. MillaneSynopsis: A selective sampling scheme is described to improve the noise tolerance of direct phasing based on shape transform diffraction between Bragg reflections in nanocrystallography using X-ray free-electron lasers. Online 15 January 2014 |
Acta Cryst. (2014). A70, 162-167 [ doi:10.1107/S2053273313034220 ] Viruses and fullerenes - symmetry as a common thread?P.-P. Dechant, J. Wardman, T. Keef and R. TwarockSynopsis: Carbon onions from affine extensions are considered in analogy with virus work. Online 18 February 2014 |
Acta Cryst. (2014). A70, 168-180 [ doi:10.1107/S2053273313034219 ] Alternative approaches to onion-like icosahedral fullerenesA. JannerSynopsis: The carbon atomic positions obtained by a quantum-chemical computation are compared with model ones having six integral indices. In one approach these indices follow from affine extensions of the icosahedral group and in another one from crystallographic scaling transformations. Online 20 February 2014 |
Acta Cryst. (2014). A70, 181-185 [ doi:10.1107/S2053273313034384 ] What periodicities can be found in diffraction patterns of quasicrystals?J. Wolny, B. Kozakowski, P. Kuczera, L. Pytlik and R. StrzalkaSynopsis: The structure of quasicrystals is aperiodic; however, their diffraction patterns comprise periodic series of peaks, which can be used to retrieve essential features of the quasicrystalline structure. Online 20 February 2014 |
Acta Cryst. (2014). A70, 186-198 [ doi:10.1107/S2053273313033822 ] Symmetry of helicoidal biopolymers in the frameworks of algebraic geometry: -helix and DNA structuresM. Samoylovich and A. TalisSynopsis: The chain of algebraic geometry and topology constructions permits one to single out a special class of discrete helicoidal structures. The symmetry of these structures determines the structural parameters of the -helix and topology of the A, B and Z forms of DNA. Online 26 February 2014 |
Acta Cryst. (2014). A70, 199-202 [ doi:10.1107/S2053273313032919 ] Essentials of CrystallographyOnline 20 February 2014 |
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