Results 31 to 40 of about 645,178 (305)

Effects of non-uniform elbow inflow on the unsteady flow and energy development characteristics of a centrifugal pump

open access: yesThe Physics of Fluids, 2023
A non-uniform inflow caused by an elbow structure is one of the main reasons for the low energy transformation efficiency of a centrifugal pump. Prototype experiments for the centrifugal pump are used to analyze the transformation rule of pump energy ...
Ye Yuan, Yujian Fang, Lingdi Tang
semanticscholar   +1 more source

Micro-Scale Flow Excitation under Imposition of Uniform Magnetic Field and Electrical Current

open access: yesMetals, 2022
Mass transfer is often the rate-determining step for solid-liquid chemical reactions. Decreasing the concentration boundary layer thickness is essential to intensify the chemical reaction.
Guangye Xu, Kazuhiko Iwai
doaj   +1 more source

Non-standing spin-waves in confined micrometer-sized ferromagnetic structures under uniform excitation [PDF]

open access: yesApplied Physics Letters, 2019
A non-standing characteristic of directly imaged spin-waves in confined micrometer-sized ultrathin Permalloy ( Ni 80 Fe 20) structures is reported along with evidence of the possibility to alter the observed state by modifications to the sample geometry.
S. Pile   +12 more
semanticscholar   +1 more source

Research on the Forward Solving Method of Defect Leakage Signal Based on the Non-Uniform Magnetic Charge Model

open access: yesItalian National Conference on Sensors, 2023
Pipeline magnetic flux leakage inspection is widely used in the evaluation of material defect detection due to its advantages of having no coupling agent and easy implementation.
Pengfei Gao   +3 more
semanticscholar   +1 more source

Low-lying magnon excitations in integer-spin ladders and tubes [PDF]

open access: yes, 2004
We consider low-energy excitation structures of N-leg integer-spin ladder and tube systems with an antiferromagnetic (AF) intrachain coupling and a uniform external field.
Affleck   +19 more
core   +3 more sources

Low Sidelobe Coupled Broadband Microstrip Array Antenna With Non-Uniform Spacing and Variable Groove Length

open access: yesIEEE Access, 2020
To reduce the sidelobe level (SLL) and widen the bandwidth, this article uses the differential evolution algorithm to optimize the array element spacing and excitation amplitude, and designs an 8-element coupled microstrip array antenna with non-uniform ...
Fenggan Zhang, Tongmin Xu, Minli Yao
doaj   +1 more source

Vector chiral states in low-dimensional quantum spin systems

open access: yes, 2007
A class of exact spin ground states with nonzero averages of vector spin chirality, $$, is presented. It is obtained by applying non-uniform O(2) rotations of spin operators in the XY plane on the SU(2)-invariant Affleck-Kennedy-Lieb-Tasaki (AKLT) states
Dillenschneider, Raoul   +2 more
core   +1 more source

The Improvement of Flaw Detection by the Configuration of Uniform Eddy Current Probes

open access: yesSensors, 2019
In this review, the principles to detect flaws with uniform eddy currents were presented based on the shape and orientation of the excitation coils and detection coils of the probe.
Ageng S. Repelianto, Naoya Kasai
doaj   +1 more source

Matrix product states for gauge field theories [PDF]

open access: yes, 2014
The matrix product state formalism is used to simulate Hamiltonian lattice gauge theories. To this end, we define matrix product state manifolds which are manifestly gauge invariant.
Buyens, Boye   +4 more
core   +3 more sources

Imaging of Subsurface Corrosion Using Gradient-Field Pulsed Eddy Current Probes with Uniform Field Excitation

open access: yesSensors, 2017
A corrosive environment leaves in-service conductive structures prone to subsurface corrosion which poses a severe threat to the structural integrity.
Yong Li   +4 more
doaj   +1 more source

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