We have developed the 2.0T permanent magnetic circuit for NMR/MRI (figure1). In the previous study, the maximum field strength of permanent magnets for MRI was 1.0T [1, 3]. With using NdFeB magnetic materials and a special magnetic circuit design, it has been achieved that the magnetic field strength of 2.03 Tesla, H center frequency of 86.3MHz, air gap of 60 mm, 10 ppm-homogeneous volume of 30...

This article presents the electromagnetic and mechanical design analyses of a 7.67:1 gear ratio magnetic (MG) for wave energy converter demonstrator. A 2-D 3-D magnetostatic finite-element analysis (FEA) was conducted to maximize mass torque density. To increase without increasing diameter, unique dual-stack rotor topology used along with 12-segment per pole-pair inner Halbach array four-segmen...

Magnetic fields have the potential to noninvasively direct and focus therapy to disease targets. External magnets can apply forces on drug-coated magnetic nanoparticles, or on living cells that contain particles, and can be used to manipulate them in vivo. Significant progress has been made in developing and testing safe and therapeutic magnetic constructs that can be manipulated by magnetic fi...

In this paper, a novel maglev coupling based on the opposed Halbach array is proposed as interface between linear electro-mechanical converter and 2D valve body. This non-contact possesses several advantages over existing mechanical couplings such zero friction wear, low vibration noise, no lubrication, which expected to greatly improve control accuracy life cycle of valve. A detailed analytica...

In this paper, we designed a new detecting system of bridge cables with a snake-shaped robot. It can solve the problems such as inefficiency and danger of aloft work in the bridge detecting by workers. The detecting system of the bridge cables includes: a snake-shaped robot; a multiple and monocular vision detection module; a nondestructive magnetic leakage detecting module; a magnetostrictive ...

Answering a question formulated by Halbach (2009), I show that a disquotational truth theory, which takes as axioms all positive substitutions of the sentential T-schema, together with all instances of induction in the language with the truth predicate, is conservative over its syntactical base. §