Results 281 to 290 of about 131,197 (331)
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Dihedral angles between alveolar septa
Journal of Applied Physiology, 1988To determine the dihedral angle, alpha, at the characteristic three-way septal junctions of lung parenchyma, we examined photomicrographs of sections. The three angles, A, formed where three septal traces meet on section, were measured and found to range between approximately 50 and 170 degrees. Theoretical considerations predicted that the dispersion
E H, Oldmixon, J P, Butler, F G, Hoppin
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On Dihedral Angle Sums of Prisms and Hexahedra
International Journal of Computational Geometry & Applications, 2023Various angle characteristics are used (e.g. in finite element methods or computer graphics) when evaluating the quality of computational meshes which may consist, in the three-dimensional case, of tetrahedra, prisms, hexahedra and pyramids. Thus, it is of interest to derive (preferably tight) bounds for dihedral angle sums, i.e.
Sergey Korotov, Jon Eivind Vatne
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Dihedral Angles in Cyclic Molecules
Journal of Structural Chemistry, 2003The experimental and quantum-chemical values of dihedral angles are analyzed for mono- and bicyclic molecules. Correlations have been found for the bond and dihedral angles.
E. G. Atavin, L. V. Vilkov
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Dihedral angles in silicon carbide
Ceramics International, 2003The commonly accepted hypothesis says that the role of sintering activators such as carbon and boron consists in modifying the relation between the energy of surface and that of grain boundaries in SiC. This means that dihedral angles in samples containing one of the activators, both of them or none should be different.
Agnieszka Gubernat, Ludosław Stobierski
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Protein secondary structure prediction with dihedral angles
Proteins: Structure, Function, and Bioinformatics, 2005AbstractWe present DESTRUCT, a new method of protein secondary structure prediction, which achieves a three‐state accuracy (Q3) of 79.4% in a cross‐validated trial on a nonredundant set of 513 proteins. An iterative set of cascade–correlation neural networks is used to predict both secondary structure and ψ dihedral angles, with predicted values ...
Matthew J, Wood, Jonathan D, Hirst
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Stereology of Dihedral Angles II: Distribution Function
SIAM Journal on Applied Mathematics, 1987Summary: [For part I see the preceding review, Zbl 0637.60019.] A field of randomly dispersed dihedrals in space is sliced by a plane. This results in a field of angles in the slicing plane whose sizes A will be random, even if the original dihedrals all have the same nonrandom size \(\alpha\).
Reeds, James A., Butler, James P.
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Backbone Dihedral Angle Prediction
2016More than two decades of research have enabled dihedral angle predictions at an accuracy that makes them an interesting alternative or supplement to secondary structure prediction that provides detailed local structure information for every residue of a protein.
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Note: Smooth torsional potentials for degenerate dihedral angles
The Journal of Chemical Physics, 2017A general method is proposed for smoothing torsional potentials when the dihedral angle becomes undefined.
Michael P. Howard +2 more
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Stereology of Dihedral Angles I: First Two Moments
SIAM Journal on Applied Mathematics, 1987Summary: A gelatin dessert has wedge-shaped fruit slices with angle \(\alpha\) dispersed in it randomly. A knife makes a planar slice through the dessert. Each dihedral angle of a fruit wedge cut by a knife shows up as an angle A in the slicing plane.
Butler, James P., Reeds, James A.
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Improved retrodirective flattened dihedral using incidence angle correction
2016 Loughborough Antennas & Propagation Conference (LAPC), 2016In this paper, a study on a flattened dihedral using reflect array approach is presented and a method is proposed to improve its performance. The dihedral-equipped with phase-shifting cells-obeys the retro directive phase law to redirect the wave back in the same direction of incidence.
Srour, Hussein +3 more
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