| 词汇 | example_english_magnetic |
| 释义 | Examples of magneticThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Therefore, the resulting expression for p proves to be the same as in the case of nonregularized magnetic islands. Non-ergodicity can be manifested in the appearance of coherent structure as long as magnetic or parallel helicity is invariant. However, in some tokamak experiments correlations between electrostatic and magnetic fluctuations at the plasma edge have been reported [9-11]. If the background plasma flow is null, the background magnetic field must be in the direction of the tube axis. The magnetic field has no influence since it is parallel to the normal of the bow shock. During the propagation of the disturbance, the evolution of the magnetic field has also been simulated in the numerical simulation. In the unperturbed state both velocity and magnetic field are non-zero and have in general both poloidal and toroidal components. We shall address two-dimensional features in the context of grey-scale plots of polarization and density-magnetic-energy correlations. The magnetohydrodynamic equilibrium of a helical-axis heliotron with large-vacuum magnetic islands is investigated. Another magnetic sensor is attached to the wand to detect its position and direction. Thus, the magnetic islands produced by reconnection may then interact with the plasmons, and this causes a nonlinear equilibrium. When > 0, (2.2) and (2.3) make it possible to model a sufficiently broad class of magnetic fields with a dipole-like configuration of field lines. Let us designate this magnetic shell as the plasmapause of the fir st type. However, our emphasis is not the formation and width of magnetic islands. In this method, an electron beam is launched on a vacuum magnetic surface of a toroidal confinement device. Thalamic abnormalities in schizophrenia visualized through magnetic resonance image averaging. Repetitive transcranial magnetic stimulation is as effective as electroconvulsive therapy in the treatment of non-delusional major depressive disorder : an open study. In their paper the shear flow was taken to be antisymmetric, with symmetric and antisymmetric stratification of the magnetic field. They are computed self-consistently at each point together with the magnetic field strength, temperature and density. Repetitive transcranial magnetic stimulation increases the release of dopamine in the mesolimbic and mesostriatal system. Figure 3 shows the deviation of the beam when a magnetic field is applied. The very important result that the value of the magnetic permeability is unity will be obtained. The collisionless plasma under the influence of a magnetic field is neither para, ferro, or diamagnetic. Magnetic fields do not penetrate more than a few centimetres below the surface of the skull, and thus not all brain areas are accessible. Within neophtonic cosmologies, song and the spirit had a special magnetic affinity for one another, turning song almost into a living thing. We first study the equilibrium problem for a single tubule subject to a magnetic field, disregarding all other tubules in the assembly. Magnetic acceleration of a superconducting solenoid to hypervelocities. The signal profile of magnetic probe in air indicates the absence of the negative peak which is due to the magnetic field of the ions. Instabilities are also observed due to plasma oscillations in magnetic field. The larmour radius of the plasma species increases under the influence of the transverse magnetic field. First positive peak is due to the magnetic field generated by the electrons. Dynamics of laser produced carbon plasma expanding in a nonuniform magnetic field. The behaviors persist in the presence of smooth density gradients or strong applied magnetic fields. The detailed study of this process shows that it is of the threshold character and is defined by the magnetic field action on an atom. The symmetry of the quasi-static magnetic field is important to collimate accelerated protons. Auditory hallucinations and the temporal cortical response to speech in schizophrenia : a functional magnetic resonance imaging study. Finding the depth of magnetic brain stimulation : a re-evaluation. Tissue impedance has no impact upon the efficiency of stimulation with magnetic fields. Repetitive transcranial magnetic stimulation is as effective as electroconvulsive therapy in the treatment of nondelusional major depressive disorder : an open study. Statistical-mechanical theory of irreversible processes. i. general theory and simple applications to magnetic and conduction problems. Fusion reactions and matter-antimatter annihilation for space propulsion ing magnetic field coils. A number of models have been introduced to study the dynamic processes of magnetic field diffusion into a plasma [2-6]. In general, we choose our magnetic field strength, length scale, and dust mass density. In our paper we discuss the results of the first three-dimensional multi-fluid simulations of magnetic reconnection in a dusty plasma. We present the results of three-dimensional self-consistent multi-fluid simulations of magnetic reconnection in a dusty plasma. The magnetic topology of each example indicates a correlation between resistivity and reconnection. In these new approaches should be also added the conditions under which involving baryons might enhance the magnetic energy to even higher values. The present results may describe the salient features of localized magnetosonic solitons in forthcoming laboratory experiments in strong magnetic fields. The results of solving the problem are independent of the sign of the 0 longitudinal magnetic field [31]. The angle between the interplanetary magnetic field and the magnetospheric field is 45m in this initial condition. In another situation, the filament does not initially lie along the interplanetary magnetic field. Both reach the hydrodynamic growth rate (dotted line) at right, in the limit of weak initial magnetic field. Then the kinetic pressure will become larger than the magnetic pressure and the plasma radius increases. In systems that lack magnetic shear and in which plasma compressibility is not significant, the socalled 'universal' instability is always present [1]. The topology of the magnetic field in the propagating wave packet is consistent with [15]. The evolution of the two wave packets then leads to the formation of a magnetic null line. Here denotes vector potential (ea /c) a double average over the magnetic surface and the ensemble. With sufficient separation, when the shock front is in radial motion, the magnetic piston is still moving axially. Spontaneously excited magnetic fields can produce cross-field transport of the polaritons at quantum scales. Figure 1 (d) shows a circular-loop antenna with axis aligned along the magnetic field. Each row had magnet pole faces pointing in the same direction, and the rows alternated in magnetic pole orientation. Combining the internal plasma current and external coil currents, we generate twisted magnetic field lines in the plasma. A high-pitch magnetic field has a large free energy that can excite torsional magnetic fluctuations. There is no force associated with the flux-rope magnetic field that can counteract the drag forces. A flux rope is a compressible magnetic structure whose structure can be influenced by its interaction with a plasma flow. There is neither a toroidal current nor a poloidal magnetic field imposed on the plasma, and hence no poloidal transform exists. In the unperturbed state, both velocity and magnetic field are non-zero and have in general both poloidal and toroidal components. To leading order in the drift parameter, the magnetic moment evaluated at the guiding-centre position and thus x are also invariants. Then we can calculate the magnetic field and current density. In the magnetic case, note the absence of data at t = 1.2 and the disagreement after t = 3.4, where no accurate fits are possible. One of the most interesting aspects of the simulation is the appearance of the low-frequency magnetic field perturbation associated with the density structures. Magnetic reconnection occur s when field lines are brought together, break and rejoin with other field lines. The code allows for an exter nally applied magnetic field. Finally, we introduce a local rectangular coordinate system with the magnetic field along the z axis and x as the radial direction. The magnetic field of the solar wind is assumed, at the moment, to be orthogonal to the solar wind flow velocity. Since we are dealing with a weakly dissipative plasma, the viscosity and the magnetic diffusivity are essential only in the dissipative layer. The equilibrium magnetic field lines are unidirectional and parallel with the z axis. In a three-dimensional situation, one may expect the appearance of a proton cavity bounded by a piled-up magnetic field and a heavy-ion shock. All runs have initial kinetic and magnetic energ y equal to one half. Given that a broadband pool of magnetic fluctuations exists, j x b will be significant provided that j and b are not nearly parallel. Many recent investigations of the emerging flux regions have showed that the magnetic flux may already be twisted below the photosphere. The magnetosonic wave propagates perpendicularly to an exter nal magnetic field, and is usually an undamped mode. The recommended monitoring is based on annual rate of relapses, neurological deterioration, and evidence of disease activity on brain magnetic resonance imaging scans. The remaining short wavelength magnetic anomalies lie between two zones of longer wavelength anomalies. Between the two is a large area of relatively low magnetic field. Large urban hospitals regularly use mobile magnetic imaging units, laboratory and clinic trailers and storage sheds for temporary facilities. All of these nine patients showed regurgitant bloodflowby magnetic resonance imaging, including in these all four cases with moderate reflux. In summary, the reliability of magnetic resonance imaging in delineating splenic location, number, and size has not been proven in the heterotaxy syndromes. Direct quantitation of right and left ventricular volumes using nuclear magnetic resonance imaging in patients with primary pulmonary hypertension. Like computed tomography, magnetic resonance imaging provides no functional information about splenic activity, unless a spleen-specific agent is used. The nonlinearity in the magnetic system is due to the dependence of the permeability on the induction in ferromagnetic materials. The radial component of the magnetic induction is zero at the cuts. After approximately 1.5 ms, the air gap is decreased considerably, which causes a stronger raise of the magnetic force in the geometrically nonlinear simulation. The magnetic field is discretized by means of edge elements. We mention that must not consider the jump of the magnetic permeability at the interface of the ferromagnetic material. Here the applied field has systematically been magnetic. The bifurcation from a normally conducting state to a superconducting state in a decreasing magnetic field is studied for a slab geometry. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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