Search results for " Kent"
showing 10 items of 25 documents
Quantum interference and the time-dependent radiation of nanojunctions
2021
Using the recently developed time-dependent Landauer-B\"uttiker formalism and Jefimenko's retarded solutions to the Maxwell equations, we show how to compute the time-dependent electromagnetic field produced by the charge and current densities in nanojunctions out of equilibrium. We then apply this formalism to a benzene ring junction, and show that geometry-dependent quantum interference effects can be used to control the magnetic field in the vicinity of the molecule. Then, treating the molecular junction as a quantum emitter, we demonstrate clear signatures of the local molecular geometry in the non-local radiated power.
Pulsed electromagnetic field therapy in the treatment of pain and other symptoms in fibromyalgia : a randomized controlled study
2018
Low-energy pulsed electromagnetic field (PEMF) therapy has been suggested as a promising therapy to increase microcirculation, which is of great concern in patients with fibromyalgia. This study evaluated the effectiveness of PEMF therapy on the treatment of fibromyalgia. A group of 108 women with fibromyalgia were allocated to a 12-week treatment period with an active Bio-Electro-Magnetic-Energy-Regulation (BEMER) device and a similar treatment period with an inactive device. Each patient received active and sham treatments in a random order. Pain and stiffness were assessed on a visual analog scale (VAS, scale 0-100mm), and functional status was assessed by the Fibromyalgia Impact Questio…
Las líderes silenciadas: el debate parlamentario sobre el sufragio femenino
2023
Durante los años de la II República, la mujer española experimenta una incipiente emancipación, sancionada por la Constitución de 1931, en la que se reconocía el voto de la mujer en condiciones de igualdad con el hombre (art. 36), aprobado el 1 de octubre. En el debate participaron dos de las tres diputadas de la Primera Legislatura de la República: Clara Campoamor (Partido Republicano Radical) y Victoria Kent (Partido Republicano Radical Socialista). Sus intervenciones, a favor y en contra respectivamente, constituyen el objeto de este trabajo. Para mi análisis, me he basado en el modelo de la lingüística pragmática de Fuentes Rodríguez y la organización en niveles de su análisis. Asimismo…
Synthetic electromagnetic knot in a three-dimensional skyrmion
2018
We experimentally simulate a quantum-mechanical particle interacting with knotted electromagnetic fields.
Ei ole verkkotaidetta ilman sitä kummallista tietoboksia edessämme : verkkotaiteen vastaanottajien käsityksiä verkkotaiteesta
2008
Tarkastelen pro gradu -tutkielmassani sitä, minkälaiseksi taideilmiöksi verkkotaidetta vastaanottavat henkilöt verkkotaiteen kuvaavat, kuinka he sitä määrittävät ja miten he paikantavat sen taiteen kentälle. Samalla olen tarkastellut, mihin taidetta ja yhteiskuntaa koskeviin keskusteluihin verkkotaide tutkimuksen aineistossa paikannetaan. Tutkimuksen aineisto on kerätty kirjoituspyynnön avulla. Kirjoituspyyntöä levitettiin sähköpostin avulla ja se julkaistiin myös internetissä. Olen lähestynyt aineistoa diskurssianalyyttisestä näkökulmasta. Tätä kautta tarkastelen tässä tutkimuksessa, millaiseksi ilmiöksi verkkotaidetta vastaanottavat ihmiset sen kirjoituksissaan tuottavat. Tutkimuksen aine…
Material, mental, and moral progress : American conceptions of civilization in late 19th century studies on "things Chinese and Japanese"
2015
Tutkimuksen kohteena vuorovaikutuksen käytänteet ja keinot
2021
100-vuotiaan Suomen kielet
2018
Dynamics of Two Ferromagnetic Insulators Coupled by Superconducting Spin Current.
2021
A conventional superconductor sandwiched between two ferromagnets can maintain coherent equilibrium spin current. This spin supercurrent results from the rotation of odd-frequency spin correlations induced in the superconductor by the magnetic proximity effect. In the absence of intrinsic magnetization, the superconductor cannot maintain multiple rotations of the triplet component but instead provides a Josephson type weak link for the spin supercurrent. We determine the analog of the current-phase relation in various circumstances and show how it can be accessed in experiments on dynamic magnetization. In particular, concentrating on the magnetic hysteresis and the ferromagnetic resonance …
Electromagnetic wave propagation in non-homogeneous waveguides
2015
We investigate an electromagnetic waveguide, having several cylindrical ends. The waveguide is assumed to be empty and to have a perfectly conductive boundary. We study the electromagnetic field, excited in the waveguide in the presence of charges and currents. The field can be described as a solution of the stationary Maxwell system with conductive boundary conditions and “intrinsic” radiation conditions at infinity. We prove the problem to be well-posed. Electromagnetic waves propagation in the waveguide can be described by means of a scattering matrix. We introduce such a matrix for all values of the spectral parameter k in the waveguide continuous spectrum and study its properties. Moreove…