From patterns to space groups and the eigensymmetry of crystallographic orbits: a reinterpretation of some symmetry diagrams in IUCr Teaching Pamphlet No. 14
نویسندگان
چکیده
Laboratorio de Cristalografı́a, Estado Sólido y Materiales (Cryssmat-Lab)/DETEMA, Facultad de Quı́mica, Universidad de la República, Avenida Gral Flores 2124, 11800 Montevideo, Uruguay, and Université de Lorraine, Faculté des Sciences et Technologies, Institut Jean Barriol FR 2843, Cristallographie, Résonance Magnétique et Modélisations (CRM2), UMR – CNRS 7036, Boulevard des Aiguillettes, BP 70239, F54506 Vandoeuvre-lès-Nancy Cedex, France. Correspondence e-mail: [email protected]
منابع مشابه
Analysis of the structural continuity in twinned crystals in terms of pseudo-eigensymmetry of crystallographic orbits
The reticular theory of twinning gives the necessary conditions on the lattice level for the formation of twins. The latter are based on the continuation, more or less approximate, of a substructure through the composition surface. The analysis of this structural continuity can be performed in terms of the eigensymmetry of the crystallographic orbits corresponding to occupied Wyckoff positions ...
متن کاملOrbit Spaces Arising from Isometric Actions on Hyperbolic Spaces
Let be a differentiable action of a Lie group on a differentiable manifold and consider the orbit space with the quotient topology. Dimension of is called the cohomogeneity of the action of on . If is a differentiable manifold of cohomogeneity one under the action of a compact and connected Lie group, then the orbit space is homeomorphic to one of the spaces , , or . In this paper we suppo...
متن کاملCrystallographic preferred orientations analysis of quartz crystals in Psammite using electron backscatter diffraction,western Ireland
The present study investigates the crystal preferred orientation (CPO) of quartz crystals in psammitic rocks to ascertain the deformationmechanism using electron backscatter diffraction (EBSD) on quartz crystals from north of the Renvyle-Bofin Slide (RBS) nearLetterfrack in western Ireland. Complete crystallographic orientations were determined for several thousand individual quartz crystalsin ...
متن کاملComparison of Two Methods of Direct and Indirect Education on Osteoporosis Preventive Behaviors among Female Students
Background Osteoporosis is the most common metabolic bone disease that decreases bone mass, causes destruction and eventually friability. This disease is preventable, and because adolescent females are the high-risk population, teaching this age group is of the utmost importance. The aim of this study was to compare the effects of the two educational methods (Lecture and Pamphlet) on osteoporos...
متن کاملThis Electronic Edition May Be Freely Copied and Redistributed for Educational or Research Purposes Only. Series Preface Teaching Aims
It may not be soM for profit nor incorporated in any product soM for profit without the express pernfission of The Executive Secretary, International The long-term aim of the Commission on Crystallographic Teachihg in establishing this pamphlet programme is to produce a large collection of short statements each dealing with a specific topic at-a specific level. The emphasis is on a particular t...
متن کامل