Results 211 to 220 of about 100,034 (331)

A model reduction approach to numerical inversion for a parabolic partial differential equation [PDF]

, 2014
Liliana Borcea, Vladimir Druskin, A. Mamonov, Mikhail Zaslavsky   +3 more
openalex   +1 more source

Velocity Spectrum Imaging Using Velocity Encoding Preparation Pulses

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose The goal of this article is to introduce a technique to measure the velocity distribution of water inside each voxel of an MR image. The method is based on the use of motion sensitizing gradients with changing first moment to encode velocity. As such, it is completely non‐invasive and requires no contrast injections.
Luis Hernandez‐Garcia, Alberto L. Vazquez, Douglas C. Noll   +2 more
wiley   +1 more source

Finite Element Approximation of Lyapunov Equations Related to Parabolic Stochastic PDEs. [PDF]

Appl Math Optim
Andersson A, Lang A, Petersson A, Schroer L.   +3 more
europepmc   +1 more source

Optimality of adaptive Galerkin methods for random parabolic partial differential equations

, 2013
Claude Jeffrey Gittelson, Roman Andreev, Christoph Schwab   +2 more
openalex   +2 more sources

An Improved Mesh Stiffness Model for a Gear Tooth With Double Cracks on Both Sides Considering Opened and Closed States

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Research on the failure mechanisms of gears with multiple cracks has gained widespread attention. Among these, the study of the mesh stiffness characteristics of gears with multiple cracks is crucial for optimizing gear design and improving transmission reliability.
Luyan Xu, Xin Yu, Yunyun Sun
wiley   +1 more source

Soliton solutions with bifurcation, sensitivity, chaotic and stability analysis of the (2+1)-dimensional Zoomeron equation using generalized Riccati equation mapping method. [PDF]

Sci Rep
Zainab A, Saad KM, Abbas M, Hamanah WM, Yousaf MZ, Birhanu A.   +5 more
europepmc   +1 more source

The von Neumann Stability Analysis of the Fixed‐Stress Schemes in Poroelastodynamics

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT We investigate splitting schemes based on the fixed‐stress sequential approach for poroelastodynamic problems. To assess numerical stability, we perform the von Neumann stability analysis on several fixed‐stress schemes for poroelastodynamics, including staggered, stabilized, and iterative methods. Our analysis reveals that while the staggered
Jihoon Kim, Sanghyun Lee, Mary F. Wheeler   +2 more
wiley   +1 more source

Study on the Lost Circulation Mechanism of Polymer-Based Drilling Fluid Systems in Deep Fractured Shale. [PDF]

Polymers (Basel)
Zang Y, Chen Z, Wang Y, Zhang Y, Xu S, Xie J, Chen W.   +6 more
europepmc   +1 more source

Molecular phylogeny and morphological characterization revealed Candolleomyces mianwaliensis Psathyrellaceae, Agaricales, a new species from Punjab, Pakistan

Nordic Journal of Botany, EarlyView.
Candolleomyces mianwaliensis is described as a new species from Mianwali District, Punjab Pakistan. The species is characterized by spherical to plane pileus bearing pale orange irregular scales scattered over smooth dark orange surface when young, turning into off‐white scales over brown to dark brown surface towards maturity, and a double membranous ...
Mehboobullah Khan, Memoona Azeem, Hira Ijaz, Wasiqa Arshad, Aasma Tufail, Sana Jabeen   +5 more
wiley   +1 more source

Thermodynamic quantum phase transition by the structural-stability-based catastrophe theory. [PDF]

iScience
Wu JH, Niu J, Liu HL, Zhou K.
europepmc   +1 more source