Results 81 to 90 of about 37,597 (261)
Journal of Ultrasound in Medicine, EarlyView.Objectives To evaluate the value of the thickness of the frontal lobe (TFL) and foramen magnum‐to‐cranium distance (FCD) for predicting poor neurodevelopmental outcomes in fetuses with a small head circumference (HC). Methods This retrospective observational study included 39 fetuses with HC < −2 standard deviations (SD) and 592 prospectively collected
Xi Du +8 more
wiley +1 more source
Structural Mechanics of Engineering Constructions and Buildings, 2017 Having taken curvilinear coordinates on the middle surface of shells in the lines of principle curvatures, we can determine the simplest system of 17 governing equations of the linear theory of shells.
S N Krivoshapko
doaj
Autonomy for MRI Field Cameras: Synchronization, Self‐Calibration, and Sequence Detection
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose This work aims to provide a workflow for operating NMR field probes in MR scanners independently of pulse programming, scanner TTL trigger pulses and dedicated calibration sequences. Methods An independent timing system and limited prior knowledge about relative probe positions enable synchronous field measurement, probe position ...
Oskar Björkqvist, Klaas P. Pruessmann
wiley +1 more source
On the helical pipe flow with a pressure-dependent viscosity
Theoretical and Applied Mechanics Letters, 2014 We address the flow of incompressible fluid with a pressure-dependent viscosity through a pipe with helical shape. The viscosity-pressure relation is defined by the Barus law.
Igor Pažanin
doaj +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Geometrically nonlinear static analysis of materially imperfect composite doubly curved shells is investigated via the generalised differential quadrature method. The effects of both shear and thickness deformation are considered through a thickness‐ and shear‐deformable third‐order theory formulated in curvilinear coordinates, while the ...
Behrouz Karami +3 more
wiley +1 more source
Nonlocal theory of curved rods. 2-D, high order, Timoshenko’s and Euler-Bernoulli models
Curved and Layered Structures, 2017 New models for plane curved rods based on linear nonlocal theory of elasticity have been developed. The 2-D theory is developed from general 2-D equations of linear nonlocal elasticity using a special curvilinear system of coordinates related to the ...
Zozulya V.V.
doaj +1 more source
Boundary-layer equations in generalized curvilinear coordinates [PDF]
A set of higher-order boundary-layer equations is derived valid for three-dimensional compressible flows. The equations are written in a generalized curvilinear coordinate system, in which the surface coordinates are nonorthogonal; the third axis is ...
Panaras, Argyris G.
core +1 more source
Back to the Mission. Revisiting Slack in Nonprofits and Introducing Tappable Slack
Nonprofit Management and Leadership, EarlyView.ABSTRACT This article contributes to and develops the previous literature on excess resources (“slack”) in nonprofit organizations through a conceptual analysis of the implications that the organizational distinctiveness of nonprofits carries for our understanding of slack in these organizations.
Marta Reuter +2 more
wiley +1 more source
2-D Modeling of hyperconcentrated fluid flow in curvilinear coordinates: dam break study
Applied Water ScienceThe hyperconcentrated fluid flow occurs as a result of heavy rainfall, during which a large amount of sediments from the upstream basin is washed away and suddenly increases the flow concentration of the alluvial channels.
Rasool Ghobadian
doaj +1 more source
Generalized characteristics method for elastic wave propagation problems [PDF]
Characteristic equations are derived in generalized curvilinear coordinates. Linear elastic, isotropic, and homogeneous constitutive equations have been used in the derivation.
Ziv, M.
core +1 more source