Results 71 to 80 of about 1,311,435 (291)
Kripke's Reduction of Löb's Theorem to the Second Incompleteness Theorem
Theoria, EarlyView.ABSTRACT In this paper, we discuss Kripke's reduction of Löb's Principle to the Second Incompleteness Theorem. We have a closer look at the non‐constructive character of the reduction. We reflect on what the argument has to tell us. In the Appendix, We give a strengthening of Löb's Principle suggested by Kripke's reduction.
Albert Visser
wiley +1 more source
An Analytical Subdomain Model of Torque Dense Halbach Array Motors
Energies, 2018 A two-dimensional mathematical model estimating the torque of a Halbach Array surface permanent magnet (SPM) motor with a non-overlapping winding layout is developed.
Moadh Mallek +5 more
doaj +1 more source
Study of a double permanent magnet and electromagnet hybrid Halbach array electrodynamic suspension
Energy Reports, 2022 In order to reduce the drag force at low speed and control the levitation force of the permanent magnet (PM) electrodynamic suspension (EDS) system, this paper proposes a double PM and electromagnet hybrid Halbach array EDS system, which uses the double ...
Cheng Luo, Jinfa Guan
doaj +1 more source
Superconducting Bearing Design for Outer Rotor Flywheel Using Lumped Parameter Techniques [PDF]
, 2014 This paper describes the application of lumped parameter modeling techniques to designing high temperature superconducting bearings for outer-rotor flywheel energy storage systems.
Chen, D, Longoria, R. G. +2 more
core +1 more source
Analysis of Field Modulated Magnetic Gear with Halbach Permanent Magnet Array
Jixie chuandong, 2017 The field modulated magnetic gear is a kind of non- contact magnetic drive device,and the Halbach permanent magnet array is a new permanent magnet structure which contains permanent magnets with variable magnetizing directions.
Cao Jiayong +3 more
doaj
The development of the magnetic system of sensor for PMR-analyser
Известия высших учебных заведений: Проблемы энергетики, 2020 The enhancement of the measuring instruments accuracy has always been the most crucial task for engineers and scientists. In particular, in the field of nuclear magnetic resonance, the creation of uniform magnetic field often defines the results of ...
A. Y. Svinin +2 more
doaj +1 more source
Quantum gates using electronic and nuclear spins of Yb$^{+}$ in a magnetic field gradient
, 2011 An efficient scheme is proposed to carry out gate operations on an array of trapped Yb$^+$ ions, based on a previous proposal using both electronic and nuclear degrees of freedom in a magnetic field gradient. For this purpose we consider the Paschen-Back
A. Sørensen +41 more
core +1 more source
Optoacoustic‐Guided Magnetic Microrobot Platform for Precision Drug Delivery
Advanced Materials, Volume 38, Issue 5, 22 January 2026.Optoacoustically guided FePt@ZIF‐8‐based microrobots are designed with high drug loading capacity, controllable locomotion, and deep‐tissue imaging capability. By integrating navigation, drug release, and real‐time monitoring into a single platform, they provide a versatile tool for precise intervention, opening new possibilities for treating ...
Fan Wang +12 more
wiley +1 more source
Active shim coils design for Halbach magnet based on inverse boundary element method
Magnetic Resonance Letters, 2022 With advantages of small volume, high field strength, and compact stray field, the Halbach array magnet is of great potential in desktop NMR applications. However, field inhomogeneity poses a main obstacle to its applications.
Yajie Xu +5 more
doaj +1 more source
Three-Dimensional Magnetic Field Modeling of a Cylindrical Halbach Array [PDF]
IEEE Transactions on Magnetics, 2010 A semi-analytical description of the 3-D magnetic field distribution of a cylindrical quasi-Halbach permanent magnet array is derived. This model avoids the necessity of time-consuming finite element analyses and allows for fast parameterization to investigate the influence of the number of segments on the magnetic flux density distribution.
Meessen, K.J. +3 more
openaire +2 more sources