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526 Newest Publications in journal of applied crystallography
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An electrically assisted device for protein crystallization in a vapor‐diffusion setup
15-05-2013 | Edith Flores‐Hernández, Vivian Stojanoff, Roberto Arreguín‐Espinosa, Abel Moreno, Nuria Sánchez‐Puig, Journal of Applied Crystallography, 2013
A new easy‐to‐use device has been designed and implemented for electric field‐induced protein crystallization in a vapor‐diffusion configuration. The device not only controls crystal nucleation by means of the electrical current, but also favors crystal growth owing to its vapor‐diffusion ...
Analytical model for neutron diffraction peak shifts due to the surface effect
15-05-2013 | Jan Šaroun, Joana Rebelo Kornmeier, Michael Hofmann, Pavol Mikula, Miroslav Vrána, Journal of Applied Crystallography, 2013
Residual strains measured by neutron diffraction near sample boundaries can be biased by the surface effect as a result of incomplete filling of the instrumental gauge volume. This effect is manifested as anomalous shifts of diffraction lines, which can be falsely interpreted as a lattice ...
Using a non‐monochromatic microbeam for serial snapshot crystallography
15-05-2013 | Catherine Dejoie, Lynne B. McCusker, Christian Baerlocher, Rafael Abela, Bruce D. Patterson, Martin Kunz, Nobumichi ..., Journal of Applied Crystallography, 2013
The new X‐ray free‐electron laser source (SwissFEL) that is currently being developed at PSI will provide a broad‐bandpass mode with an energy bandwidth of about 4%. By using the full energy range, a new option for structural studies of crystalline materials may become possible. The proof ...
Using GPUs to compute fast Fourier transforms for crystal structure solution and refinement
15-05-2013 | ElSayed Mohamed Shalaby, Miguel Afonso Oliveira, Journal of Applied Crystallography, 2013
In the past few years, new hardware tools have become available for computing using the graphical processing units (GPUs) present in modern graphics cards. These GPUs allow efficient parallel calculations with a much higher throughput than microprocessors. In this work, fast Fourier ...
Twiny: from morphology to twin element and vice versa
15-05-2013 | Massimo Nespolo, Cristian Iordache, Journal of Applied Crystallography, 2013
Twiny is a small Fortran program for identification or confirmation of the twin element from the morphological analysis of twins. It takes as input the twin element and computes the angle between corresponding [uvw] directions in two individuals of the twin: the result can be used by the ...
Structural, optical and thermal properties of Zr–Fe co‐doped congruent LiNbO3 single crystals
15-05-2013 | B. Riscob, R. Bhatt, N. Vijayan, Indranil Bhaumik, S. Ganesamoorthy, M. A. Wahab, , G. Bhagavannarayana, Journal of Applied Crystallography, 2013
Zr–Fe‐doped congruent lithium niobate single crystals were grown by the Czochralski technique. The crystal structure and lattice parameter of the grown crystals were assessed by powder X‐ray diffraction and the strain developed as a result of doping has been calculated (−1.19 × 10−3) by ...
Rat‐tail tendon fiber SAXS high‐order diffraction peaks recovered by a superbright laboratory source and a novel restoration algorithm
15-05-2013 | Liberato De Caro, Davide Altamura, Teresa Sibillano, Dritan Siliqi, Giovanni Filograsso, Oliver Bunk, Cinzia Giannini, Journal of Applied Crystallography, 2013
The nanoscale structural order of air‐dried rat‐tail tendon is investigated using small‐angle X‐ray scattering (SAXS). SAXS fiber diffraction patterns were collected with a superbright laboratory microsource at XMI‐LAB [Altamura, Lassandro, Vittoria, De Caro, Siliqi, Ladisa & Giannini ...
A cautionary tale on the use of GE‐7031 varnish: low‐temperature thermal expansion studies of ScF3
15-05-2013 | Cody R. Morelock, Matthew R. Suchomel, Angus P. Wilkinson, Journal of Applied Crystallography, 2013
GE‐7031 varnish, a commonly used low‐temperature adhesive and electrical insulator owing to its high thermal conductivity and mechanical strength at low temperatures, was used as a sample matrix for low‐temperature powder X‐ray diffraction measurements of the negative thermal expansion ...
Determination of the distribution of elements with similar electron counts: a practical guide for resonant X‐ray scattering
15-05-2013 | Simon Welzmiller, Philipp Urban, Felix Fahrnbauer, Loredana Erra, Oliver Oeckler, Journal of Applied Crystallography, 2013
This article attempts to present straightforward and easy‐to‐understand guidelines for the determination of element distribution in compounds lacking X‐ray scattering contrast because they have similar electron counts. Different sources of anomalous dispersion correction terms (especially ...
Determination of crystal symmetry for Bi4Ti3O12‐based ferroelectrics by using electron diffraction
15-05-2013 | Wanneng Ye, Chaojing Lu, Peng You, Kun Liang, Yichun Zhou, Journal of Applied Crystallography, 2013
In recent years, inconsistent space groups of monoclinic B1a1 and orthorhombic B2cb have been reported for the room‐temperature ferroelectric phases of both Bi4Ti3O12 and lanthanide‐substituted Bi4Ti3O12. In this article, the electron diffraction technique is employed to unambiguously ...
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