Nuclear quadrupole resonance (NQR) combines the spatial localization capability and convenience of metal detection or ground-penetrating radar (GPR) with the compound specific detection capability offered by chemical detection techniques. Starting in the mid-1990s, groups at Quantum Magnetics Inc. and the Naval Research Laboratory made considerable improvements in the basic scientific and instr...

The increasing use of expensive computer simulations in engineering places a serious computational burden on associated optimization problems. Surrogate modelling becomes standard practice in analyzing such expensive blackbox problems. Moreover, surrogate based optimization (SBO) is able to drastically reduce the number of needed function evaluations with respect to traditional methods. This pa...

Magnetics, ferroelectrics and multiferroics have attracted great attentions because they are not only extremely important for investigating fundamental physics, but also applications in information technology. Here, recent computational studies on magnetism ferroelectricity reviewed. We first give a brief introduction to magnets, ferroelectrics, multiferroics. Then, theoretical models correspon...

Abstract Hopfions are three-dimensional (3D) topological states discovered in field theory, magnetics, and hydrodynamics that resemble particle-like objects physical space. inherit the features of Hopf fibration, a homotopic mapping from unit sphere 4D space to 3D Here we design demonstrate dynamic scalar optical hopfions shape toroidal vortex expressed as an approximate solution Maxwell’s equa...

In this study we demonstrated the inactivation of E. coli, C. difficile, meshophilic bacteria and Salmonella spp. through Pulsed Electric Field (PEF) technology. First, a simulation using Finite Element Method Magnetics Mathematical Modeling was used to obtain electric field values be in electro-pasteurization tunnel. Then, practical tests were carried out by an industrial scale apparatus set w...