Results 251 to 260 of about 182,806 (308)

Orientation of Apatite Crystals in Bone

Nature, 1954
FROM the earliest experiments on X-ray diffraction by specimens of bone, it has been well known that in long bones, for example, femora, the c-axes of the hexagonal apatite crystals are preferentially orientated parallel to the long axis of the bone.
S M, CLARK, J, IBALL
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Light scattering by randomly oriented crystals

Applied Optics, 1989
The scattering phase function and the degree of linear polarization for small crystals oriented randomly in space have been computed using the geometric ray tracing theory and assuming that the crystals are homogeneous and isotropic. Calculations have been carried out for the main crystal geometries.
MUINONEN, K, LUMME, K, PELTONIEMI, J, Irvine, William M.   +3 more
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Program for orientating crystal surfaces

Computers & Chemistry, 1991
Abstract Optional surfaces or terraces and steps belonging to a given surface of a crystal lattice are constructed and then rotated in order to get them parallel to the xy-plane of the coordinate system. The cartesian coordinates of the lattice points before and after rotation are obtained.
Gyula Dömötör, Miklós I. Bán
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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 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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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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