

Cover illustration: Example of a threedimensional reciprocalspace map recorded from a sample of GaAs nanowires grown on GaAs. Courtesy of Schlepütz et al. [J. Appl. Cryst. (2011), 44, 7383]. 
J. Appl. Cryst. (2012). 45, 621626 [ doi:10.1107/S0021889812026830 ] Mirror symmetries in multiple diffraction patterns of facecentred cubic crystalsC. B. R. Parente, V. L. Mazzocchi, J. M. Sasaki and L. P. CardosoSynopsis: In this work, a study of the mirror symmetries appearing in multiple diffraction patterns of facecentred cubic crystals is carried out. It is shown that isomorphic and anamorphic mirrors coexist in these patterns. Online 14 July 2012 
J. Appl. Cryst. (2012). 45, 627643 [ doi:10.1107/S0021889812026854 ] On the determination of singlecrystal plasticity parameters by diffraction: optimization of a polycrystalline plasticity model using a genetic algorithmT. Skippon, C. Mareau and M. R. DaymondSynopsis: A genetic algorithm was used to successfully optimize the work hardening coefficients of a polycrystalline plasticity model. Online 14 July 2012 
J. Appl. Cryst. (2012). 45, 644651 [ doi:10.1107/S002188981202064X ] Structural analysis of magnetic nanocrystals embedded in silicate glasses by anomalous smallangle Xray scatteringV. S. Raghuwanshi, D. Tatchev, S. Haas, R. Harizanova, I. Gugov, C. Rüssel and A. HoellSynopsis: The anomalous smallangle Xray scattering technique is applied to determine quantitative information about the structure and composition of magnetic nanoparticles and their environment in silicate glasses. Online 20 June 2012 
J. Appl. Cryst. (2012). 45, 652661 [ doi:10.1107/S0021889812019164 ] Reduction of radiation damage and other benefits of short wavelengths for macromolecular crystallography data collectionR. Fourme, V. Honkimäki, E. Girard, K. Medjoubi, A.C. Dhaussy and R. KahnSynopsis: Xray photons with energy higher than usual improve both the number and the quality of diffraction data from a given macromolecular crystal. Online 12 June 2012 
J. Appl. Cryst. (2012). 45, 662673 [ doi:10.1107/S0021889812020298 ] Quantitative smallangle scattering on mesoporous silica powders: from morphological features to specific surface estimationJ. Cambedouzou and O. DiatSynopsis: Smallangle scattering profiles of mesoporous materials are measured in absolute units and quantitatively compared with calculated profiles. This treatment allows the determination of the mesoporous specific surface of these materials without resorting to gas adsorption measurements. Online 20 June 2012 
J. Appl. Cryst. (2012). 45, 674678 [ doi:10.1107/S0021889812024557 ] An antisettling sample delivery instrument for serial femtosecond crystallographyL. Lomb, J. Steinbrener, S. Bari, D. Beisel, D. Berndt, C. Kieser, M. Lukat, N. Neef and R. L. ShoemanSynopsis: A simple and robust instrument, which overcomes the crystal settling that impairs serial femtosecond crystallography experiments, is described. Online 4 July 2012 
J. Appl. Cryst. (2012). 45, 679685 [ doi:10.1107/S0021889812016822 ] Unidirectional crystal growth and crystalline perfection of Larginine phosphate monohydrateB. Riscob, M. Shakir, N. Vijayan, K. K. Maurya, M. A. Wahab and G. BhagavannarayanaSynopsis: A large and unidirectional single crystal of technologically important Larginine phosphate monohydrate has been grown for the first time by the recently invented SankaranarayananRamasamy method. The crystalline perfection and the mechanical and dielectric properties have been assessed and correlated. Online 12 June 2012 
J. Appl. Cryst. (2012). 45, 686692 [ doi:10.1107/S0021889812019784 ] Neutron protein crystallography at ultralow (<15 K) temperaturesD. A. A. Myles, F. Dauvergne, M. P. Blakeley and F. MeilleurSynopsis: Techniques used to cryocool large protein crystals (16 mm^{3}) successfully are described. Highresolution cryoneutron crystallography data were collected at 15 K for three test systems. Online 20 June 2012 
J. Appl. Cryst. (2012). 45, 693704 [ doi:10.1107/S0021889812025563 ] A fast methodology to determine the characteristics of thousands of grains using threedimensional Xray diffraction. I. Overlapping diffraction peaks and parameters of the experimental setupH. Sharma, R. M. Huizenga and S. E. OffermanSynopsis: A fast and robust methodology is developed for the analysis of twodimensional diffraction data containing peak overlap, acquired from polycrystalline materials consisting of thousands of grains using threedimensional Xray diffraction. This first part outlines the procedure for the accurate identification and characterization of overlapping diffraction peaks and the determination of the parameters of the experimental setup without the need for calibration samples. Online 14 July 2012 
J. Appl. Cryst. (2012). 45, 705718 [ doi:10.1107/S0021889812025599 ] A fast methodology to determine the characteristics of thousands of grains using threedimensional Xray diffraction. II. Volume, centreofmass position, crystallographic orientation and strain state of grainsH. Sharma, R. M. Huizenga and S. E. OffermanSynopsis: A fast and robust methodology is developed for the analysis of twodimensional diffraction data acquired from samples containing thousands of grains using threedimensional Xray diffraction. This second part deals with the procedure for the determination of grain characteristics. The volume, crystallographic orientation, centreofmass position and strain state of individual grains can be determined simultaneously. Online 14 July 2012 
J. Appl. Cryst. (2012). 45, 719725 [ doi:10.1107/S002188981202599X ] Characterization of an anomaly in the crystallographic orientation of platelike carbides precipitated in a wrought Nibase superalloyH. W. Jeong, I. S. Kim, S. M. Seo, Y. S. Yoo, B. G. Choi and C. Y. JoSynopsis: In the present study, the precipitation of a facecentred cubic carbide in a facecentred cubic matrix was observed for the first time in the absence of the cubecube orientation relationship. This crystallographic orientation anomaly was characterized by a new method using transmission electron microscopy. Online 14 July 2012 
J. Appl. Cryst. (2012). 45, 726737 [ doi:10.1107/S0021889812016809 ] Highpressure phase transitions and equations of state in NiSi. II. Experimental resultsO. T. Lord, L. Vocadlo, I. G. Wood, D. P. Dobson, S. M. Clark and M. J. WalterSynopsis: The highpressure structures of NiSi and their roomtemperature equations of state have been investigated using synchrotron Xray diffraction in a diamond anvil cell, coupled with laser annealing. An FeSistructured phase was found to form above 13 GPa and a CsClstructured phase above 61 GPa. Online 12 June 2012 
J. Appl. Cryst. (2012). 45, 738747 [ doi:10.1107/S0021889812018109 ] Untangling diffraction intensity: modulation enhanced diffraction on ZrO_{2} powderW. van Beek, H. Emerich, A. Urakawa, L. Palin, M. Milanesio, R. Caliandro, D. Viterbo and D. ChernyshovSynopsis: Atomic selectivity in Xray diffraction has been achieved by varying the Xray energy, and thus the resonant scattering contributions, using the recently proposed modulation enhanced diffraction approach. A general experimental recipe is given, and possible schemes for data analysis are introduced, tested and discussed. Online 12 June 2012 
J. Appl. Cryst. (2012). 45, 748757 [ doi:10.1107/S0021889812024892 ] Realtime synchrotron Xray diffraction study on the isothermal martensite transformation of maraging steel in high magnetic fieldsD. San Martin, E. JiménezMelero, J. A. Duffy, V. Honkimäki, S. van der Zwaag and N. H. van DijkSynopsis: Timedependent microbeam Xray diffraction experiments have been performed on the isothermal austenitetomartensite transformation in maraging steel. The transformation behaviour of a set of individual austenite grains is monitored in detail and correlated to the microstructural features. Online 4 July 2012 
J. Appl. Cryst. (2012). 45, 758765 [ doi:10.1107/S0021889812025757 ] A gradual desiccation method for improving the efficiency of protein crystallization screeningQ.Q. Lu, X.Z. Xie, R.Q. Chen, Z.Q. Wu, Q.D. Cheng, P. Shang and D.C. YinSynopsis: A modification to the vapor diffusion protein crystallization method, named the gradual desiccation method, is reported. It was found that this method can significantly enhance crystallization of proteins. Online 14 July 2012 
J. Appl. Cryst. (2012). 45, 766777 [ doi:10.1107/S0021889812022583 ] Ferroelectric domains in PZT ceramics at the morphotropic phase boundary. Can the splitting of reflections in SAED patterns be used for the distinction of different pseudocubic phases?R. Schierholz and H. FuessSynopsis: Selected area electron diffraction (SAED) patterns along the main pseudocubic axes, which show a splitting of reflections, are calculated for tetragonal and rhombohedral distortions present around the morphotropic phase boundary of PbZr_{1x}Ti_{x}O_{3} (PZT). If a defined splitting is observed it might be used to estimate the lattice distortion, although for a detailed analysis, especially to distinguish the monoclinic phase, convergentbeam electron diffraction is required. Online 20 June 2012 
J. Appl. Cryst. (2012). 45, 778784 [ doi:10.1107/S0021889812018900 ] Threedimensional Bragg coherent diffraction imaging of an extended ZnO crystalX. Huang, R. Harder, S. Leake, J. Clark and I. RobinsonSynopsis: A complex threedimensional quantitative image of an extended zinc oxide crystal has been obtained using Bragg coherent diffraction imaging integrated with ptychography. Online 20 June 2012 
J. Appl. Cryst. (2012). 45, 785788 [ doi:10.1107/S0021889812024545 ] Fineneedle capillary mounting for protein microcrystalsM. Makino, I. Wada, N. Mizuno, K. Hirata, N. Shimizu, T. Hikima, M. Yamamoto and T. KumasakaSynopsis: It is demonstrated that a cryocrystallographic mounting method using a fineneedle capillary is suitable for protein microcrystals. Online 4 July 2012 
J. Appl. Cryst. (2012). 45, 789797 [ doi:10.1107/S002188981201953X ] COVMAP: a new algorithm for structure model optimization in the EXPO packageA. Altomare, C. Cuocci, C. Giacovazzo, A. Moliterni and R. RizziSynopsis: A new method for recovering atom positions missing in a structure model obtained at the end of the ab initio solution process has been developed. Online 4 July 2012 
J. Appl. Cryst. (2012). 45, 798806 [ doi:10.1107/S0021889812025058 ] Apparent lattice expansion in ordered nanoporous silica during capillary condensation of fluidsJ. Prass, D. Müter, M. Erko and O. ParisSynopsis: A Bragg peak shift suggests a pore lattice expansion in ordered nanoporous silica at the onset of capillary condensation of fluids. In depth analysis by a numerical and an analytical approach leads to the conclusion that this shift is due not to a mechanical deformation of the pore lattice but to a subtle interplay between the form factor and the structure factor from crystallites of finite size. Online 4 July 2012 
J. Appl. Cryst. (2012). 45, 807813 [ doi:10.1107/S0021889812023321 ] A novel event correlation scheme for Xray photon correlation spectroscopyY. Chushkin, C. Caronna and A. MadsenSynopsis: Structural relaxations in a molecular glass former were probed by Xray photon correlation spectroscopy. The timedependent intermediate scattering function was calculated using a novel event correlation algorithm that takes both single and multiplephoton events into account. Online 20 June 2012 
J. Appl. Cryst. (2012). 45, 814825 [ doi:10.1107/S0021889812018043 ] Data representations of Zeeman spatial beam splitting in polarized neutron reflectometryS. Kozhevnikov, F. Ott and F. RaduSynopsis: The different Zeeman energy effects in neutron reflectivity experiments and their influence on beam splitting are reviewed. The representation of Zeeman splitting data in several coordinate systems is discussed, and the use of such data to directly extract information on magnetic thinfilm systems is examined. Online 14 July 2012 
J. Appl. Cryst. (2012). 45, 826833 [ doi:10.1107/S0021889812027665 ] Strains in lightionimplanted polycrystals: influence of grain orientationA. Richard, H. Palancher, É Castelier, J.S. Micha, M. Gamaleri, G. Carlot, H. Rouquette, P. Goudeau, G. Martin, F. Rieutord, J. P. Piron and P. GarciaSynopsis: Micro Xray diffraction and mechanical modeling on lowenergy (60 keV) lightion (He)implanted polycrystals have shown that the strain tensor has only three nonzero components, which depend on grain orientation. Online 14 July 2012 
J. Appl. Cryst. (2012). 45, 834837 [ doi:10.1107/S002188981201998X ] From patterns to space groups and the eigensymmetry of crystallographic orbits: a reinterpretation of some symmetry diagrams in IUCr Teaching Pamphlet No. 14L. Suescun and M. NespoloSynopsis: The common misinterpretation of a special orbit in centrosymmetric space groups as a general orbit in a polar subgroup is pointed out through some of the examples in IUCr Teaching Pamphlet No. 14, and an alternative interpretation is given. Online 12 June 2012 
J. Appl. Cryst. (2012). 45, 838839 [ doi:10.1107/S0021889812024879 ] Elastic strain and stress determination by Rietveld refinement: generalized treatment for textured polycrystals for all Laue classes. CorrigendaN. C. Popa and D. BalzarSynopsis: Errors in the article by Popa & Balzar [J. Appl. Cryst. (2001), 34, 187195], caused by an equation from literature used without checking, are corrected. It is expected that other published papers will have been affected as the source error is in a reference book. Online 4 July 2012 
J. Appl. Cryst. (2012). 45, 840843 [ doi:10.1107/S0021889812026751 ] Bonsu: the interactive phase retrieval suiteM. C. Newton, Y. Nishino and I. K. RobinsonSynopsis: Bonsu is an opensource software package primarily for the reconstruction of phase information from coherent Xray diffraction measurements. Online 14 July 2012 
J. Appl. Cryst. (2012). 45, 844848 [ doi:10.1107/S0021889812021152 ] DAJUST: a suite of computer programs for pattern matching, spacegroup determination and intensity extraction from powder diffraction dataO. Vallcorba, J. Rius, C. Frontera, I. Peral and C. MiravitllesSynopsis: The interactive powder diffraction program DAJUST for wholepattern matching, spacegroup determination and extraction of integrated intensities is described. The resulting intensity data files are compatible with the XLENS (Patterson function direct methods) and TALP (directspace multisolution methods) programs of the authors' laboratory (ICMAB, CSIC). Online 20 June 2012 
J. Appl. Cryst. (2012). 45, 849854 [ doi:10.1107/S0021889812029111 ] WinGX and ORTEP for Windows: an updateL. J. FarrugiaSynopsis: The programs WinGX and ORTEP for Windows have been distributed over the internet for about 15 years, and this article describes some of the more modern features of the programs. Online 14 July 2012 
J. Appl. Cryst. (2012). 45, 855861 [ doi:10.1107/S002188981201878X ] FraGen: a computer program for realspace structure solution of extended inorganic frameworksY. Li, J. Yu and R. XuSynopsis: A computer program is reported for the structure solution of extended inorganic frameworks in real space. The space group and cell parameters are the basic inputs required by this program. Prior chemical and crystallographic knowledge can significantly enhance its computation efficiency. Online 12 June 2012 
J. Appl. Cryst. (2012). 45, 862868 [ doi:10.1107/S0021889812027173 ] QPCED2.0: a computer program for the processing and quantification of polycrystalline electron diffraction patternsX.Z. LiSynopsis: A computer program, QPCED2.0, has been developed for the handling of selectedarea electron diffraction patterns for polycrystalline materials. The design and implementation of QPCED2.0 are elucidated and application examples are given. Online 14 July 2012 
J. Appl. Cryst. (2012). 45, 869873 [ doi:10.1107/S0021889812025733 ] Xray microimaging laboratory (XMILAB)D. Altamura, R. Lassandro, F. A. Vittoria, L. De Caro, D. Siliqi, M. Ladisa and C. GianniniSynopsis: A firstgenerationsynchrotronclass Xray laboratory microsource, coupled to a threepinhole camera, is presented. It allows small and wideangle Xray scattering images to be acquired simultaneously, and scanning small and wideangle Xray scattering microscopy to be carried out. Online 4 July 2012 
J. Appl. Cryst. (2012). 45, 874 [ doi:10.1107/S0021889812021139 ] Nonlinear Mechanics of CrystalsOnline 12 June 2012 
J. Appl. Cryst. (2012). 45, 875880 forthcoming meetings and short courses 
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