Results 281 to 290 of about 137,105 (301)

Prevalence and clinical correlates of Peyronie's disease in patients with Dupuytren's disease: a cross-sectional study from a tertiary andrology center. [PDF]

Sex Med
Çeker G, Arıkız E, Erbin A, Anıl H, Canat HL.   +4 more
europepmc   +1 more source

Research on the effects of curvature and shear keys on torsional stiffness and interfacial stress of segmented U-shaped curved bridge. [PDF]

Sci Rep
Zhang S, Wang C, Qu H, Xu W, Xiao L, Fan Q, Wang C, Han Y.   +7 more
europepmc   +1 more source

Correlation between refractive errors and ocular biometric parameters at Al-Mustaqbal University, Iraq. [PDF]

BMC Ophthalmol
Aljaberi HA, Rahmani S, Naji AM.
europepmc   +1 more source

Assessing Trunk Cross-Section Geometry and Spinal Postures with Noninvasive 3D Surface Topography: A Study of 108 Healthy Young Adults. [PDF]

Sensors (Basel)
Żurawski AŁ, Friebe D, Zaleska S, Wojtas K, Gawlik M, Wilczyński J.   +5 more
europepmc   +1 more source

Characterizing growth and early hemodynamic inefficiencies: Phase-contrast magnetic resonance imaging analysis of the aorta in post-Fontan hypoplastic left heart syndrome.

JTCVS Struct Endovasc
Fernandes JF, Bellsham-Revell H, Sattwika PD, Ghahfarokhi M, Yap HY, Kiely A, Ferez XM, Camara O, Sotelo J, Wong J, Barron D, Salih C, Pushparajah K, Lewandowski AJ, Lamata P, de Vecchi A.   +15 more
europepmc   +1 more source

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GENERAL RELATIVITY AND SECTIONAL CURVATURE

International Journal of Geometric Methods in Modern Physics, 2006
A discussion is given of the sectional curvature function on a four-dimensional Lorentz manifold and, in particular, on the space–time of Einstein's general relativity theory. Its tight relationship to the metric tensor is demonstrated and some of its geometrical and algebraic properties evaluated.
openaire   +1 more source

Cross-sectional design with curvature constraints

Computer-Aided Design, 2005
A practical example of B-spline curve control points manipulation for the geometric construction of a free form shape is presented. Elements of a cross-sectional design methodology are used in conjunction with a skinning type operator for the definition of a B-spline surface.
Anas Bentamy, François Guibault, Jean Yves Trépanier   +2 more
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Sectional Curvatures and Characteristic Classes

The Annals of Mathematics, 1964
We are concerned here with the relationship between the curvature properties of a riemannian manifold X and the global topological and differential invariants of X. An interesting result in this direction is Chern's theorem [6] that if X is compact, orientable, and has constant riemannian sectional curvature, then all Pontrjagin classes of X (with real
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Negative ξ-sectional Curvature

2002
The purpose of this chapter is to introduce some special directions that belong to the contact subbundle of a contact metric manifold with negative sectional curvature for plane sections containing the characteristic vector field ξ or more generally when the operator h admits an eigenvalue greater than 1; these directions were introduced by the author ...
openaire   +1 more source