Acta Crystallographica Section A
Acta Crystallographica
Section A FOUNDATIONS AND ADVANCES

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FOUNDATIONS
ADVANCES

Volume 31| Part 1

ISSN: 2053-2733

January 1975 issue

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research papers

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The use of a three-axis spectrometer on an angled reactor channel

B. C. G. Haywood

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Diffraction by dispersion of spherical membrane vesicles. I. The basic equations

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The relation between reduced and conventional unit cells for centred monoclinic lattices

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Arrangements of point charges having zero electric-field gradient

O. Knop, E. M. Palmer and R. W. Robinson

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The nature of Kikuchi lines in the Bragg case in reflexion high-energy electron diffraction

S. Miyake, K. Hayakawa, T. Kawamura and Y.-H. Ohtsuki

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Discrepancy factors for use in crystal structure analysis. II. Normalized index $\overline{\it R}$ ₂ for crystals with a few heavy atoms in the asymmetric unit belonging to the triclinic, monoclinic and orthorhombic systems

V. Parthasarathi and S. Parthasarathy

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Diffraction patterns of thin perfect crystals and their applicability to the determination of structure factors

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X-ray diffuse scattering from neutron-irradiated uranium dioxide crystals

S. Szarras and E. M. Hörl

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The application of phase relationships to complex structures. VlI. Magic integers

P. S. White and M. M. Woolfson

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The effect of Coulombic interactions on the calculated crystal structures of benzene at atmospheric and 25 kbar pressure

D. Hall and D. E. Williams

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Contrast of 180° domains of PbTiO₃ in an electron microscopic image

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Structure analysis of the γ-phase in the vanadium oxide system by electron diffraction studies

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Identification of enantiomorphism in crystals by electron microscopy

O. Van der Biest and G. Thomas

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Schwinger and anomalous scattering of neutrons from CdS

G. P. Felcher and S. W. Peterson

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A calculation of the molecular orientational disorder in crystalline anthrone

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Internal strain of GaAs. I. Longitudinal case

C. N. Koumelis and E. K. Rozis

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Automorphismengruppen von Raumgruppen und die Zuordnung von Punktlagen zu Konfigurationslagen

E. Koch and W. Fischer

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Thermal diffuse X-ray scattering for small samples and small coherent scattering domains

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Charge-density analyses for molecular crystals using Bragg diffraction data: the effects of error

A. J. Allen-Williams, W. T. Delaney, R. Furina, E. N. Maslen, B. H. O'Connor, J. N. Varghese and Young Fook Hong

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Dislocation contrast from phonon-scattered electrons in weak-beam images

A. Melander and R. Sandström

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Antiphase domains in a lunar pigeonite: determination of the average shape, size and orientation from a measurement of three-dimensional intensity profiles of diffuse (h + k = odd) reflections

M. M. Hamil, S. Ghose and R. A. Sparks

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Direct structure determination of asymmetric membrane systems from X-ray diffraction

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Optical anisotropies of some organic molecules

M. A. Lasheen and I. H. Ibrahim

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High-precision orientation of crystals using the Laue method with characteristic X-rays

G. Christiansen, L. Gerward and I. Alstrup

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Rapid calculation of X-ray absorption correction factors for cylinders to an accuracy of 0.1%

C. W. Dwiggins Jnr

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Some statistical results for structures with pseudosymmetry

V. Parthasarathi and S. Parthasarathy

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short communications

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Comments on Multiple diffraction of X-rays and the phase problem by R. Colella

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Reply to Post's comments on my paper Multiple diffraction of X-rays and the phase problem. Computational procedures and comparison with experiment

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Schottky defects in KI and RbI

P. D. Pathak and N. M. Pandya

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The root-mean-square vibrational displacements of sodium and fluorine ions in sodium fluoride: erratum

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An X-ray determination of the thermal expansion of silver and copper-base alloys at high temperature. II. Cu–Ga

S. K. Halder and S. P. Sen Gupta

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notes and news

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Notes and News

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Advances

Recently published Advances articles are given below.

Interpretation of angular symmetries in electron nanodiffraction patterns from thin amorphous specimens. A. C. Y. Liu, G. R. Lumpkin, T. C. Petersen, J. Etheridge & L. Bourgeois (2015). Acta Cryst. A71, doi:10.1107/S2053273315011845.

Identification of inversion domains in KTiOPO₄ via resonant X-ray diffraction. F. Fabrizi, P. A. Thomas, G. Nisbet & S. P. Collins (2015). Acta Cryst. A71, 361-367.

Partial order among the 14 Bravais types of lattices: basics and applications. H. Grimmer (2015). Acta Cryst. A71, 143-149.

SHELXT - Integrated space-group and crystal-structure determination. G. M. Sheldrick (2015). Acta Cryst. A71, 3-8.

Special issues

Mathematical Crystallography

Bragg centennial issue

Laue centennial issue

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