Non-coherent scattering in transfer problems in spherical shell media

1973 ◽  
Vol 25 (1) ◽  
pp. 247-261
Author(s):  
T. H. Kho ◽  
K. K. Sen
Keyword(s):  
Spherical Shell ◽  
Coherent Scattering ◽  
Transfer Problems

Non-coherent scattering in transfer problems in spherical shell media

1973 ◽  
Vol 21 (1) ◽  
pp. 237-255 ◽  
Author(s):  
T. H. Kho ◽  
K. K. Sen
Keyword(s):  
Spherical Shell ◽  
Coherent Scattering ◽  
Transfer Problems

Non-coherent scattering in transfer problems in spherical shell media

1973 ◽  
Vol 21 (1) ◽  
pp. 39-57 ◽  
Author(s):  
T. H. Kho ◽  
K. K. Sen
Keyword(s):  
Spherical Shell ◽  
Coherent Scattering ◽  
Transfer Problems

scholarly journals Application of Monte Carlo Methods in Transfer Problems

1970 ◽  
Vol 2 ◽  
pp. 119-119
Author(s):  
C. Magnan
Keyword(s):  
Monte Carlo ◽  
Continuous Spectrum ◽  
Monte Carlo Methods ◽  
Constant Velocity ◽  
Coherent Scattering ◽  
Monte Carlo Techniques ◽  
Flat Disk ◽  
Transfer Problems ◽  
Formal Communication ◽  
Isothermal Atmosphere

I have not prepared any formal communication. Nevertheless I would like to mention the types of calculation that are now in progress in Paris.I am handling transfer problems in moving atmospheres by using Monte Carlo techniques. A twolevel atom and an isothermal atmosphere are always assumed. Two types“of geometry are considered: a spherical atmosphere with a constant velocity of expansion, or a flat disk with constant velocities of expansion and rotation. Non-coherent scattering (either entirely incoherent or partially coherent) is assumed with respect to the “local frequency“ (as seen by the absorbing atoms).Concerning the “creation” of photons, two problems have been handled: the photons are created via absorption of a continuous spectrum produced by an underlying photosphere (the Schuster problem) or they are created within the envelope via electronic collision or recombination from ionized states.The most typical results concern the Schuster problem.

Crystal Structure Determination of Glycerol-Containing Lipids from Electron Diffraction Data. Use of Analog Compounds Based upon Configurational Isomers of Cyclopentane-1, 2, 3-TRIOL

1977 ◽  
Vol 35 ◽  
pp. 24-25
Author(s):  
Douglas L. Dorset ◽  
Anthony J. Hancock
Keyword(s):  
Crystal Structure ◽  
Electron Diffraction ◽  
Diffraction Data ◽  
Structure Determination ◽  
Crystal Surface ◽  
Coherent Scattering ◽  
Crystal Structure Determination ◽  
Electron Diffraction Data ◽  
Polar Group ◽  
Axis Orientation

Lipids containing long polymethylene chains were among the first compounds subjected to electron diffraction structure analysis. It was only recently realized, however, that various distortions of thin lipid microcrystal plates, e.g. bends, polar group and methyl end plane disorders, etc. (1-3), restrict coherent scattering to the methylene subcell alone, particularly if undistorted molecular layers have well-defined end planes. Thus, ab initio crystal structure determination on a given single uncharacterized natural lipid using electron diffraction data can only hope to identify the subcell packing and the chain axis orientation with respect to the crystal surface. In lipids based on glycerol, for example, conformations of long chains and polar groups about the C-C bonds of this moiety still would remain unknown.One possible means of surmounting this difficulty is to investigate structural analogs of the material of interest in conjunction with the natural compound itself. Suitable analogs to the glycerol lipids are compounds based on the three configurational isomers of cyclopentane-1,2,3-triol shown in Fig. 1, in which three rotameric forms of the natural glycerol derivatives are fixed by the ring structure (4-7).

A neutron-diffraction study of potassium bromide

1973 ◽  
Vol 137 (4) ◽  
Author(s):  
G. E. Bacon ◽  
D. H. Titterton ◽  
C. R. Walker
Keyword(s):  
Neutron Diffraction ◽  
Diffraction Data ◽  
Diffuse Scattering ◽  
Scattering Amplitude ◽  
Coherent Scattering ◽  
Neutron Diffraction Study ◽  
Potassium Bromide ◽  
Neutron Diffraction Data ◽  
Thermal Diffuse Scattering ◽  
Thermal Diffuse

AbstractNeutron-diffraction data have been collected from a KBr single crystal. 380 reflections were measured, reducing to 23 when averaged over equivalents. Data were corrected for extinction and thermal diffuse scattering and refinement yielded a neutron coherent scattering amplitude

Heat Transfer Problems of Bypass Laminar-Turbulent Transition

1998 ◽  
Vol 29 (1-3) ◽  
pp. 54-65
Author(s):  
E. P. Dyban ◽  
Eleonora Ya. Epik
Keyword(s):  
Heat Transfer ◽  
Turbulent Transition ◽  
Transfer Problems ◽  
Laminar Turbulent Transition
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