نتایج جستجو برای: pulsed electromagnetic field

تعداد نتایج: 867068  

Journal: :Physical review letters 2003
A V Avdeenkov John L Bohn

We predict that pairs of polar molecules can be weakly bound together in an ultracold environment, provided that a dc electric field is present. The field that links the molecules together also strongly influences the basic properties of the resulting dimer, such as its binding energy and predissociation lifetime. Because of their long-range character, these dimers will be useful in disentangli...

Journal: :Occupational and Environmental Medicine 1998

Journal: :IEEE Transactions on Magnetics 1982

2001
M. E. Reeves F. J. Rachford

The dielectric permittivity, tunability ~De/e!, and loss tangent of Ba12xSrxTiO3 ~BST! films grown by pulsed-laser deposition are studied by near-field microwave microscopy. Based on theoretical simulations, a method is developed to measure the uniaxial dielectric anisotropy, e' /e i , in BST films grown at different oxygen pressures. The measured e' /e i decreases with the film-growth oxygen p...

2006
Giorgio A. Ascoli Gerald A. Goldin

In the first sections of this article, we discuss two variations on Maxwell’s equations that have been introduced in earlier work—a class of nonlinear Maxwell theories with well-defined Galilean limits (and correspondingly generalized Yang-Mills equations), and a linear modification motivated by the coupling of the electromagnetic potential with a certain nonlinear Schrödinger equation. In the ...

Journal: :Digital Signal Processing 2008
Dean Cvetkovic Elif Derya Übeyli Irena Cosic

This paper presents the experimental pilot study to investigate the effects of pulsed electromagnetic field (PEMF) at extremely low frequency (ELF) in response to photoplethysmographic (PPG), electrocardiographic (ECG), electroencephalographic (EEG) activity. The assessment of wavelet transform (WT) as a feature extraction method was used in representing the electrophysiological signals. Consid...

2008
HONG-MING YIN H. M. YIN

Superheating is a phenomenon in which the temperature in a solid phase is higher than the melting temperature. This phenomenon is common when a microwave or an induction heating method is used during a melting process. The classical interface conditions (Stefan conditions) have to be modified in order to model this phenomenon. In this paper we study a melting process for highly conductive mater...

Journal: :Headache 1998
R A Sherman L Robson L A Marden

Two studies were conducted during which 23 patients with chronic migraine were exposed to pulsing electromagnetic fields over the inner thigh. In an open study, 11 subjects kept a 2-week headache log before and after 2 to 3 weeks of exposure to pulsing electromagnetic fields for 1 hour per day, 5 days per week. The number of headaches per week decreased from 4.03 during the baseline period to 0...

Journal: :Nanoscale 2014
Gaspar Armelles Blanca Caballero Patricia Prieto Fernando García Alfonso Cebollada Maria Ujué González Antonio García-Martin

In this work we analyse the magnetic field effects on the chirooptical properties of magnetoplasmonic chiral structures. The structures consist of two-dimensional arrays of Au gammadions in which thin layers of Co have been inserted. Due to the magnetic properties of the Au/Co interface the structures have perpendicular magnetic anisotropy which favours magnetic saturation along the surface nor...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2006
Sjoerd Stallinga

The conservation of energy, linear momentum, and angular momentum of the electromagnetic field in linear dielectric media with arbitrary dispersion and absorption is studied in the framework of an auxiliary field approach in which the electric and magnetic fields are complemented by a material field. This material field depends on a continuous variable omega, and describes harmonic motions of t...

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