نتایج جستجو برای: electromagnetic fields radiation

تعداد نتایج: 509824  

Journal: :Physical review letters 2004
K V R M Murali Z Dutton W D Oliver D S Crankshaw T P Orlando

Superconductive quantum circuits comprise quantized energy levels that may be coupled via microwave electromagnetic fields. Described in this way, one may draw a close analogy to atoms with internal (electronic) levels coupled by laser light fields. In this Letter, we present a superconductive analog to electromagnetically induced transparency that utilizes superconductive quantum circuit desig...

Journal: :Radiation protection dosimetry 2010
Malka N Halgamuge Chathurika D Abeyrathne Priyan Mendis

Electricity is used substantially and sources of electric and magnetic fields are, unavoidably, everywhere. The transportation system is a source of these fields, to which a large proportion of the population is exposed. Hence, investigation of the effects of long-term exposure of the general public to low-frequency electromagnetic fields caused by the transportation system is critically import...

2014
Irene Calvente Cristina Dávila-Arias Olga Ocón-Hernández Rocío Pérez-Lobato Rosa Ramos Francisco Artacho-Cordón Nicolás Olea María Isabel Núñez Mariana F. Fernández

OBJECTIVE To characterize the exposure to electric fields and magnetic fields of non-ionizing radiation in the electromagnetic spectrum (15 Hz to 100 kHz) in the dwellings of children from the Spanish Environment and Childhood-"INMA" population-based birth cohort. METHODOLOGY The study sample was drawn from the INMA-Granada cohort. Out of 300 boys participating in the 9-10 year follow-up, 123...

Journal: :Physical review. D, Particles and fields 1995
Gasperini Giovannini Veneziano

In the inflationary scenarios suggested by string theory, the vacuum fluctuations of the electromagnetic field can be amplified by the time-evolution of the dilaton background, and can grow large enough to explain both the origin of the cosmic magnetic fields and of the observed CMB anisotropy. The normalization of the perturbation spectrum is fixed, and implies a relation between the perturbat...

2011
Worawut Khunsin Björn Brian Jens Dorfmüller Moritz Esslinger Ralf Vogelgesang Christoph Etrich Carsten Rockstuhl Alexandre Dmitriev Klaus Kern

In nanoscopic systems, size, geometry, and arrangement are the crucial determinants of the light-matter interaction and resulting nanoparticles excitation. At optical frequencies, one of the most prominent examples is the excitation of localized surface plasmon polaritons, where the electromagnetic radiation is coupled to the confined charge density oscillations. Here, we show that beyond direc...

2013
Dimitris J. Panagopoulos Olle Johansson George L. Carlo

PURPOSE To evaluate SAR as a dosimetric quantity for EMF bioeffects, and identify ways for increasing the precision in EMF dosimetry and bioactivity assessment. METHODS We discuss the interaction of man-made electromagnetic waves with biological matter and calculate the energy transferred to a single free ion within a cell. We analyze the physics and biology of SAR and evaluate the methods of...

2015
Grzegorz Redlarski Bogdan Lewczuk Arkadiusz Żak Andrzej Koncicki Marek Krawczuk Janusz Piechocki Kazimierz Jakubiuk Piotr Tojza Jacek Jaworski Dominik Ambroziak Łukasz Skarbek Dawid Gradolewski

Current technologies have become a source of omnipresent electromagnetic pollution from generated electromagnetic fields and resulting electromagnetic radiation. In many cases this pollution is much stronger than any natural sources of electromagnetic fields or radiation. The harm caused by this pollution is still open to question since there is no clear and definitive evidence of its negative ...

2017

Submit Manuscript | http://medcraveonline.com Abbreviations: EMFs: Electromagnetic Fields; MWR: Microwave Radiation; NIR: Non-Ionizing Radiation; RF-EMW: Radiofrequency Electromagnetic Waves; RF: Radiofrequency; EMW: Electromagnetic Wave; SNS: Sympathetic Nervous System; PNS: Parasympathetic Nervous System; PRA: Plasma Renin Activity; AMI: Acute Myocardial Infarction; SNAP: N-AcetylSnitrosoDl-P...

2008
Vasily E Tarasov

The dielectric susceptibility of a wide class of dielectric materials follows, over extended frequency ranges, a fractional power-law frequency dependence that is called the ‘universal’ response. The electromagnetic fields in such dielectric media are described by fractional differential equations with time derivatives of non-integer order. An exact solution of the fractional equations for a ma...

2010
Anirudh Pradhan Rekha Singh J. P. Shahi

Two new cylindrically symmetric inhomogeneous string cosmological models are investigated in presence of magnetic field. We have assumed that F12 is the only non-vanishing component of electromagnetic field tensor Fij . The Maxwell’s equations show that F12 is the function of x alone whereas the magnetic permeability μ̄ is the function of x and t both. To get the deterministic solution, it has b...

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