Acta Crystallographica Section A: Foundations of Crystallography Volume 65, Part 3 (May 2009) Copyright (c) International Union of Crystallography 2009 ----------------------------------------------------------------- [Issue Author Index][Volume Author Index] * feature articles * research papers ----------------------------------------------------------------- feature articles ----------------------------------------------------------------- [Open access] Acta Cryst. (2009). A65, 167-182 [ doi:10.1107/S0108767309007235 ] 60 years of IUCr journals A. Authier Synopsis: The birth and growth of the publications and journals of the International Union of Crystallography from 1948 to 2008 are described. Details are given of the pre-war history that led up to their creation and development. Online 2 April 2009 ----------------------------------------------------------------- research papers ----------------------------------------------------------------- Acta Cryst. (2009). A65, 183-189 [ doi:10.1107/S0108767309003687 ] Correcting electron-density resolution bias in reciprocal space A. Altomare, C. Cuocci, C. Giacovazzo, S. Maggi, A. Moliterni and R. Rizzi Synopsis: Atomic scattering factors are modified to correct the resolution bias in electron-density maps. Online 13 March 2009 ----------------------------------------------------------------- Acta Cryst. (2009). A65, 190-201 [ doi:10.1107/S0108767309007508 ] Depth profiling of polymer films with grazing-incidence small-angle X-ray scattering M. A. Singh and M. N. Groves Synopsis: A procedure for obtaining depth-specific scattering profiles of laterally defined nanostructure using grazing-incidence small-angle X-ray scattering is described. Online 2 April 2009 ----------------------------------------------------------------- Acta Cryst. (2009). A65, 202-212 [ doi:10.1107/S0108767309006096 ] Topological relations between three-periodic nets. II. Binodal nets V. A. Blatov and D. M. Proserpio Synopsis: The TOPOS program package was used to generate all subnets of 3- to 12-coordinated binodal nets taken from the Reticular Chemistry Structure Resource database. 38 304 binodal nets with novel topologies were revealed and stored in the TTD collection. Online 2 April 2009 ----------------------------------------------------------------- Acta Cryst. (2009). A65, 213-226 [ doi:10.1107/S0108767309003638 ] Crystal topologies - the achievable and inevitable symmetries G. Thimm Synopsis: On the basis of a link between a graph-theoretical description of crystal structures and their symmetries, atom positions are constrained. Examples show the presence of implicit and forbidden symmetries. Online 13 March 2009 ----------------------------------------------------------------- Acta Cryst. (2009). A65, 227-231 [ doi:10.1107/S0108767309004966 ] Temperature-dependent Debye-Waller factors for semiconductors with the wurtzite-type structure M. Schowalter, A. Rosenauer, J. T. Titantah and D. Lamoen Synopsis: The Debye-Waller factors of wurtzite-type semiconductors are calculated from ab initio force constants and fitted in the temperature range from 0.1 to 1000 K. Online 13 March 2009 ----------------------------------------------------------------- Acta Cryst. (2009). A65, 232-239 [ doi:10.1107/S0108767309009714 ] Relationship between the atomic pair distribution function and small-angle scattering: implications for modeling of nanoparticles C. L. Farrow and S. J. L. Billinge Synopsis: The exact relationship between the atomic pair distribution function and small-angle-scattering equations is established and discussed. This has implications for the structural modeling of nanoparticles. Online 2 April 2009 ----------------------------------------------------------------- Acta Cryst. (2009). A65, 240-248 [ doi:10.1107/S0108767309004292 ] Discrete tomography of icosahedral model sets C. Huck Synopsis: The main problems in the discrete tomography of mathematical quasicrystals with icosahedral symmetry are investigated. Online 13 March 2009 ----------------------------------------------------------------- Acta Cryst. (2009). A65, 249-252 [ doi:10.1107/S0108767309008228 ] The full symmetry and irreducible representations of nanotori M. Arezoomand and B. Taeri Synopsis: The full symmetry groups of carbon nanotori are investigated and the irreducible representations and characters of the symmetry groups of chiral and achiral nanotori are discussed. Online 2 April 2009 -----------------------------------------------------------------