Results 211 to 220 of about 154,550 (267)

The fundamentals of crystal orientation

Acta Crystallographica Section A Foundations and Advances, 2018
The method described in this paper improves the old methods of crystal orientation, applies new parametric equations for crystallography, and increases the precision and accuracy of measurements. The method applies to inorganic and organic crystals. A breakthrough in crystal orientation happened about 25 years ago when two equations dependent on the ...
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Oriented crystallization in polymers

Journal of Macromolecular Science, Part B, 1967
Molten crystallizable polymer is extruded through an orifice. Opposite the orifice on the upstream side is a fixed surface arranged so as to provide in the molten polymer a line of uniaxial extension or a plane of pure shear passing through the orifice.
A. Keller, M. J. Machin
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Computerized Crystal Orientation

Review of Scientific Instruments, 1973
A computer program has been developed for accurately and rapidly determining the Miller indices for any number of Laue diffraction spots for a crystal of any symmetry and with arbitrary orientation relative to the x-ray beam. Using the xy coordinates of each Laue spot the program goes directly to the assignment and verification of the Miller indices ...
J. Lisbôa, David F. Edwards
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Oriented Crystallization of Glass

2003
[no abstract available]
Keding, R., Carl, G., Rüssel, C.
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Orientational relaxation and orientational structure of C60 crystal

International Journal of Inorganic Materials, 2001
Abstract The site occupancies of orientational angle 98° and 38° of C 60 molecules versus temperature is investigated by an extremal dynamic model in the temperature range between order–disorder phase transition and glassy transition. The site occupancy of orientational angle 38° calculated by the model are 0.1699, 0.1828 and 0.3732, which are ...
W.Q Cao, Y.F Cheng, J.D Liu
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Orientation of Hexagonal Crystals

American Journal of Physics, 1970
Interplanar angles and stereographic projections are described for hexagonal structures. Graphs of the variations of some interplanar angles with c/a are given. The four systems of indexing hexagonal lattices are compared.
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Protein crystals orientation in a magnetic field

Acta Crystallographica Section D Biological Crystallography, 1998
Nucleation and crystal growth of hen egg-white lysozyme, bovine pancreatic trypsin inhibitor and porcine pancreatic alpha-amylase were carried out in the presence of a magnetic field of 1.25 T produced by small permanent magnets. Crystals were oriented in the magnetic field, except when heterogeneous nucleation occurred.
Astier, Jean Pierre, Veesler, Stéphane, Boistelle, Roland   +2 more
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Crystal Sphere Orienter

Review of Scientific Instruments, 1963
A crystal sphere orienter for nonopaque crystals has been designed. It is used in conjunction with a petrographic microscope to orient crystal spheres optically.
J. J. Papike, R. C. Bright, T. Zoltai
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Oriented crystallization of inorganic salts in collagen

Experientia, 1955
Wenn gestreckte Kollagenfasern in einer alkalischen Losung gewisser anorganischer Salze gelassen und dann getrocknet werden, so kristallisieren die Salze mit einer ihrer Achsen in paralleler Orientierung zur Faserachse. Die Periode parallel dieser Achse liegt zwischen 3,2 und 3,75 A oder einem Vielfachen dieser Werte.
G N, RAMACHANDRAN, G K, AMBADY
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Orientation of Single Crystals

1974
The orientation of single crystals involves two basic tasks: the determining an unknown orientation and setting a sample in desired orientation. In order to explain our method we proceed in the following manner: First we describe the experimental setup for taking pictures of Laue back-reflection patterns and the conventional back-reflection Laue method
Eduard Preuss, Bernhard Krahl-Urban, Rainer Butz   +2 more
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