Results 21 to 30 of about 180,159 (256)
Induced connections of two types on a surface of an affine space
Дифференциальная геометрия многообразий фигур, 2019 In the affine space the fundamental-group connection in the bundle associated with a surface as a manifold of tangent planes is investigated. The principal bundle contains a quotient bundle of tangent frames, the typical fiber of which is a linear group ...
A. Shults
doaj +1 more source
Chirality in the Solid State: Chiral Crystal Structures in Chiral and Achiral Space Groups
Materials, 2022 Chirality depends on particular symmetries. For crystal structures it describes the absence of mirror planes and inversion centers, and in addition to translations, only rotations are allowed as symmetry elements.
G. Fecher, J. Kübler, C. Felser
semanticscholar +1 more source
Subarachnoid Space Measurements in Apparently Healthy Fetuses Using MR Imaging
American Journal of Neuroradiology, 2023 BACKGROUND AND PURPOSE: The fetal subarachnoid space size serves as an indicator of normal brain development. The subarachnoid space is commonly measured by an ultrasound examination.
A. Wandel +3 more
semanticscholar +1 more source
Method for Calculating Excited Electronic States Using Density Functionals and Direct Orbital Optimization with Real Space Grid or Plane-Wave Basis Set. [PDF]
Journal of Chemical Theory and Computation, 2021 A direct orbital optimization method is presented for density functional calculations of excited electronic states using either a real space grid or a plane-wave basis set.
A. Ivanov +3 more
semanticscholar +1 more source
The joys and pitfalls of Fermi surface mapping in Bi2Sr2CaCu2O8+d using angle resolved photoemission [PDF]
, 1999 : On the basis of angle-scanned photoemission data recorded using unpolarized radiation, with high (E,k) resolution, and an extremely dense sampling of k space, we resolve the current controversy regarding the normal state Fermi surface (FS) in Bi(2)Sr(2)
S. Borisenko +9 more
semanticscholar +1 more source
Frontiers in Psychology, 2016 Reaction time (RT) can strongly be influenced by a number of stimulus properties. For instance, there was converging evidence that perceived size rather than physical (i.e. retinal) size constitutes a major determinant of RT.
Thorsten Plewan, Gerhard Rinkenauer
doaj +1 more source
Momentum space design of high-Q photonic crystal optical cavities [PDF]
, 2002 The design of high quality factor (Q) optical cavities in two dimensional photonic crystal (PC) slab waveguides based upon a momentum space picture is presented.
Painter, Oskar, Srinivasan, Kartik
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Topological barriers for locally homeomorphic quasiregular mappings in 3-space
, 2017 We construct a new type of locally homeomorphic quasiregular mappings in the 3-sphere and discuss their relation to the M.A.Lavrentiev problem, the Zorich map with an essential singularity at infinity, the Fatou's problem and a quasiregular analogue of ...
Apanasov, Boris N.
core +1 more source
Enhancement of Wigner crystallization in quasi low-dimensional solids [PDF]
, 2006 The crystallization of electrons in quasi low-dimensional solids is studied in a model which retains the full three-dimensional nature of the Coulomb interactions.
E. Y. Andrei +9 more
core +3 more sources
, 2017 Metal crystals with tetrahedral packing are known as Frank-Kasper phases with large unit cells with the number of atoms from hundreds to thousands. The main factors of the formation and stability of these phases are the atomic size ratio and the number ...
Afonikova, Natalia S +1 more
core +2 more sources