Search is not available for this dataset
query stringlengths 1 13.4k | pos stringlengths 1 61k | neg stringlengths 1 63.9k | query_lang stringclasses 147
values | __index_level_0__ int64 0 3.11M |
|---|---|---|---|---|
Simulations of drift resistive ballooning L-mode turbulence in the edge plasma of the DIII-D tokamaka) | Results from simulations of electromagnetic drift-resistive ballooning turbulence for tokamak edge turbulence in realistic single-null geometry are reported. The calculations are undertaken with the BOUT three-dimensional fluid code that solves Braginskii-based fluid equations [X. Q. Xu and R. H. Cohen, Contrib. Plasma... | Abstract Mathematical modelling for a class of flexible robot with two links and three joints is considered in this paper. Assume that one of the two links is elastic and that the deformatin of the elastic link happens along any direction perpendicular to the longitudinal axis of the elastic link. Using the dynamics an... | eng_Latn | 4,300 |
Studies of the contribution of alternating electromagnetic fields toward material fatigue in 100Cr6 | Purpose – The purpose of this paper is to show how controlled exposure of electromagnetic fields toward bearing steel vulnerates the microstructure. The ability of Barkhausen Noise signal processing is used for detecting phenomena such as dislocation and subgrain formation processes as the beginning of later failures.D... | We theoretically propose a method to identify $\ifmmode\pm\else\textpm\fi{}s$-wave order parameter in recently discovered Fe-pnictide superconductors. Our idea uses the Riedel anomaly in ac-Josephson current through a $\text{SI}(\ifmmode\pm\else\textpm\fi{}\text{S})$ (single-band $s$-wave superconductor/insulator/$\ifm... | eng_Latn | 4,301 |
Multicarrier transmitter for transmitting a plurality of spatial signal streams, multicarrier receiver, and method | Multicarrier transmitter space to encode multicarrier signals for transmission on multiple spatial channels - including the frequency coder - Frequency interleaver and space. | We report on the first direct numerical simulation of drift-Alfven wave turbulence in three-dimensional magnetic field geometries. It is found that the local metric has significant influence on instability and transport and that local shear contributes as the principal damping mechanism in low-global-shear field config... | eng_Latn | 4,302 |
Suppression of sawtooth oscillations by lower-hybrid current drive in the ASDEX tokamak. | The sawtooth oscillations in tokamak discharges with Ohmic and neutral-beam heating could be suppressed when a large part of the plasma current was driven by lower-hybrid waves (I/sub HF//I/sub p/approx. =0.5). The stabilization is due to a flattening of the current profile j(r) and an increase of q(0) above 1. Higher ... | This paper describes the features and applications of ADAM5000TCP and ADAM5511 in control system of picosecond accelerator,and mainly recounts the skillful data processing of Kingview 6.5 used as upper-layer platform,including the linear form,database,file and bit operation.Actually experience indicates that the adopti... | eng_Latn | 4,303 |
Feasibility study on a high current density, large-scale superconductors by dynamic stabilization. II Stability margin. | In succession of part I of this paper, the stability margin of a tape superconductor is analysed theoretically in order to prove scientific feasibility of high current density, large-scale superconductors. As a typical example, Cu-Nb3Sn-Cu conductor is investigated: The thickness of Cu and Nb3Sn are 1mm and 50μm, respe... | Bliss [Bliss, C., 2008. Multiple equilibrium in the Diamond capital model. Economics Letters 100, 143–145] finds numerically that the Diamond OLG model can have uncountably many steady states. We use log preferences and show analytically that a continuum of steady states can still exist. | eng_Latn | 4,304 |
Planetary Science: What would happen if you stood on Jupiter? Would you fall into the core, since it has no physical surface? | What would happen if you stood on Jupiter? | I made a plasma vortex at my home, but why doesn't it produce a zapping sound like at time when we see sparks and does the air nearby it, ionizes? | eng_Latn | 4,305 |
Light is a high frequency electromagnetic wave. Can an LC oscillation circuit emit visible light? As we all know, light is a kind of high-frequency electromagnetic waves. Can LC oscillation circuit emit visible light? | Can an LC oscillator be used to generate visible light? The LC oscillator is most commonly used to generate radio waves for practical use and the frequency $\omega$ of the LC oscillator equals that of the electromagnetic wave so produced. So, can they in principle be used to emit visible light? The frequency of visibl... | What exactly happens to the signals hitting a common mode choke? I'm trying to better understand the principles behind the common mode choke. I made a few drawings to clarify. Differential Mode Signals Differential currents (driven by differential voltages) create equal but opposite magnetic fields B in the in... | eng_Latn | 4,306 |
Metal foams for electromagnetic shielding: a plasma model | Metal foams are highly versatile new materials with interesting structural and electromagnetic properties. In this work, their use in electromagnetic shielding problems is investigated. More specifically, the shielding effectiveness of an aluminium foam slab is studied on the basis of an effective medium approach. Furt... | Abstract In this paper finite element analysis of the large deflection behaviour of skew plates has been done. A high precision conforming triangular plate bending element has been used. The central deflection, bending and membrane stresses have been reported for simply supported and clamped rhombic plates. The variati... | eng_Latn | 4,307 |
Confinement in electron cyclotron heating experiments on Doublet III | Electron Cyclotron Heating experiments have been performed on the Doublet III tokamak in the expanded boundary divertor configuration. Effective ECH heating is found even at densities twice the cutoff density, with no decrease in the global energy confinement time when the cutoff is exceeded. Analysis of the behavior o... | Abstract We present a new formulation of Chern-Simons theory on a three-dimensional lattice, with either the linear gauge group R or the finite cyclic gauge group Z N . By coupling extended objects called dumb-bells to the lattice Chern-Simons field, we obtain a model exhibiting fractional statistics in the continuum l... | eng_Latn | 4,308 |
Effect of finite boundary layer on the ionization instability in non-equilibrium MHD generators | Abstract This paper presents an investigation of the effect of boundary layer on the ionization instability in non-equilibrium MHD plasmas: the Boltzmann transfer equation has been employed in the analysis. It is concluded that the effect of finite boundary layer thickness is to reduce the growth rate. Moreover, the gr... | The structure of GMA is introduced. Static displacement-force model and magnetism-machine coupling model for helping understand the magnetostriction and establishes simulation model are given. Simulation result shows that response time of machine part is slowness. It brings some disbennifit affection if minish damp. Fo... | eng_Latn | 4,309 |
Propagation of nonlinear slow waves produced by pressure pulses along the Io flux tube | Abstract A pressure enhancement in the vicinity of Io can be created in the course of the torus plasma flow around Io due to mass loading or it can be produced by volcanic outbursts on Io. For a given magnetic flux tube crossed by Io, a pressure pulse generates two slow magnetosonic waves propagating along the tube to ... | A solution for the early flow around an impulsively started sphere in a viscous fluid has been developed in powers of the time from the start of the motion. The boundary-layer solution considered by E. Boltze has been extended and solutions of this type have been developed to include the effect of finite Reynolds numbe... | eng_Latn | 4,310 |
The Three-dimensional Structure of Plasminostreptin, a Bacterial Protein Protease Inhibitor, at 2.8Å Resolution | The three-dimensional structure of plasminostreptin, a bacterial protein protease inhibitor from Streptomyces antifibrinolyticus, was determined at 2.8A resolution by the multiple isomorphous replacement technique. A dimer with the molecular weight of 11,402×2 was included in an asymmetric unit of the crystal. The mono... | A new method of analyzing plasma performance over large regions of density and temperature space with time-dependent multidimensional transport codes is presented. Contour plots of global plasma parameters are shown to be a valuable tool for determining the impact of very detailed physics on plasma performance. Tokamak... | eng_Latn | 4,311 |
A New Slotted-Pipe Kicker Magnet for Bepcii Storage Ring | For the severe requirements of BEPCII injecting kicker magnets, the two schemes of low impedance kicker magnets used in other accelerator labs in the world are not adaptive to the BEPCII storage ring. A new scheme of kicker magnets proposed in this article solves the difficult problem of BEPCII kicker magnet design. An... | FIELD: food industry. SUBSTANCE: according to the proposed method one applies the first graphic image on the first retrievable insert and the second graphic image on the second retrievable insert. One inserts the first retrievable insert into the frame attached to the outer surface of the products cooling body. The fra... | kor_Hang | 4,312 |
Plan power supply for static rectifiers | Static rectifiers are widely used for HVDC conversion and in industrial plants. Rectifiers disturb a power system by generating harmonic-frequency voltages and currents which affect power system equipment in many ways. The planning required so that a rectifier plant will have the least detrimental effect on a power sys... | In support of the TCV experimental campaign aiming at studying H-mode plasmas with snowflake (SF) divertor, free boundary equilibrium and stability studies were performed with the SPIDER and KINX codes. Due to the high flexibility of plasma shaping capabilities of TCV, SF divertor conditions can be reached for various pl... | eng_Latn | 4,313 |
The Thomson scattering system on the lithium tokamak experiment | The lithium tokamak experiment (LTX) is a spherical tokamak with R0=0.4m, a=0.26m, BTF∼3.4kG, IP∼400kA, and pulse length ∼0.25s. The goal of LTX is to investigate tokamak plasmas that are almost entirely surrounded by a lithium-coated plasma-facing shell conformal to the last closed magnetic flux surface. Based on prev... | Abstract A numerical scheme, based upon the Kobayashi-Tranter method with certain modifications, is given for axisymmetric punch and crack problems in elasticity. The problems are reduced to solving a system of linear algebraic equations instead of a Fredholm integral equation of the second kind. A standard program thu... | eng_Latn | 4,314 |
Estimates on the mean current in a sphere of plasma | Several turbulent dynamo models predict the concentration of the magnetic field in chaotic plasmas in sheets with the field vector pointing alternatively in opposite directions, which should produce strong current sheets. It is proved that if the plasma is contained in a rigid sphere with perfectly conducting boundary ... | This paper presents a discharge arc model which can represent approximately both static and dynamic characteristics of a typical fluorescent lamp controlled by a power electronic circuit. The proposed model was developed from the combination and modifications of the classical Cassie and Mayr equations. The equations ha... | eng_Latn | 4,315 |
130 MM aperture quadrupoles for the LHC luminosity upgrade | Several studies for the LHC luminosity upgrade pointed out the need for low-beta quadrupoles with apertures larger than the present baseline (70 mm). In this paper we focus on the design issues of a 130 mm aperture quadrupole. We first consider the Nb-Ti option, presenting a magnetic design with the LHC dipole and quad... | 4 pages.-- PACS numbers: 05.45.Xt, 87.10.+e.-- ArXiv pre-print: http://arxiv.org/abs/nlin.CD/0512009.-- Final full-text version of the paper available at: http://dx.doi.org/10.1103/PhysRevE.73.055202. | eng_Latn | 4,316 |
Anomalous transport modelling of tokamak plasmas | Theory based transport simulations of DIII-D, JET, ITER are compared to experimental data using a combination of anamolous transport models. The Multiple-mode Transport Model is calibrated to a give set of L-mode and H-mode discharges with an emphasis on testing the adequacy of anomalous flux contributions from drift/{... | Background: Fanconi Aneamia is a rare genomic instability inherited syndrome. Allo-BMT for life-threatening aplastic aneamia is associated to acute toxicity and secondary tumours. Gene therapy is an attractive alternative while obstacles need to be overcome: (i) the scarcity of BM-stem cells; (ii) their flimsiness (iii... | eng_Latn | 4,317 |
Spin dependent momentum distributions of proton-deuteron clusters in 3He from electron scattering on polarized 3He: Theoretical predictions | The process $\overrightarrow{^3{\rm He}}(e,e'\vec{p})d $ (or $\overrightarrow{^3{\rm He}}(e,e'\vec{d})p $) is studied theoretically in a Faddeev treatment with the aim to have access to the spin-dependent momentum distribution of ${\vec p} {\vec d} $ clusters in polarized $^3$He. Final state interactions and meson exch... | Abstract Helium glow discharge cleaning (He-GDC) is frequently applied to reduce impurities like oxygen on the plasma facing materials in many plasma confinement devices, including large helical device (LHD). However, there are few reports which evaluated the wall conditioning effect from the point of view of the micro... | eng_Latn | 4,318 |
The onset of plasma potential locking | In this paper, we provide insight into the role and impact that a positively biased electrode (anode) has on bulk plasma potential. Using two-dimensional Particle-in-Cell simulations, we investigate the plasma potential as an anode transitions from very small (“probe” mode) to large (“locking” mode). Prior theory provi... | We investigated the field-induced shift of the blue phase diffraction bands. The temperature dependence of the electrostriction tensor components is determined for the first time. In the blue phase BPI at constant field strength ${\bf E}/\!\!/~[001]$, a change of the temperature leads to a change of both the unit cell ... | eng_Latn | 4,319 |
RARE CAUSE OF CHRONIC ODYNOPHAGIA | A 63-year-old Chinese gentleman, a non-smoker with less than 5 units of alcohol intake per week, presented with persistent progressive odynophagia for 1 year with sudden onset of hoarseness for 1 month. Oral and neck examinations were normal. Flexible laryngoscopy showed left false cord fullness with reduced mobility o... | In order to realize an efficient ECRH and also to reduce stray radiation due to non-absorbed power during ECRH, it is necessary to excite a wave that is absorbed well near the electron cyclotron resonance. In the normal fusion magnetic field confinement machine and in the electron cyclotron frequency range, WKB approxi... | yue_Hant | 4,320 |
Physics Aspects of the Dynamic Ergodic Divertor (DED) | The Dynamic Ergodic Divertor (DED) is presently being installed in the TEXTOR tokamak. It consists of 16 helical coils wound helically around the torus at the high fietd side (HFS). The perturbation currents in these coils generate predominantly islands of m=10...14 and n=4leading both to rather closed ergodic and to o... | This paper presents direction-of-arrival estimation and adaptive beamforming for smart antenna systems. DOA estimation is based on the MUSIC algorithm for identifying the direction of the source signals incident on the sensor array comprising the smart antenna system. Adaptive beamforming achieved using the LMS algorit... | eng_Latn | 4,321 |
Energy confinement of high-density tokamaks | Neoclassical ion heat conduction is the major energy loss mechanism in the center of an ohmically heated high-d. tokamak discharge (n>3 * 1020 m-3). This fixes the mutual dependence of plasma quantities on the axis and leads to scaling laws for the poloidal b and energy confinement time, given the empirical fact that t... | In the context of structural health monitoring (SHM) applications, this article first presents an example of damage detection uncertainty in a typical fiberglass woven thermoplastic plate structure with pre-embedded disbonds of various sizes and locations. A Taguchi experimental design has been implemented to statistic... | eng_Latn | 4,322 |
The discharging stability of the pulsed vacuum arc deposition | The pulsed vacuum arc deposition(PVAD) is a new technique of coating,which is developed in recent decades,and have widely promising usage.But the stabiliyt of the discharging is influenced by the failure discharge and the stretching discharge,which lead to the poor quality of the film and the low efficiency of the coat... | A plasma CVD technology was developed that can deposit high-quality Ta20S thin film, suitable for stacked capacitor dielectric film of 64 Mbit-DRAM and beyond. Ta20S films, as thin as 30 A Si02 equivalen� thickness, deposited by this newly | eng_Latn | 4,323 |
Thermally Stable Operation of Engineering Test Reactor Tokamaks | It is desirable for the plasma operating points of future Engineering Test Reactor (ETR) tokamaks to be in parameter regimes that are inherently stable to thermal fluctuations; in other words, thermal equilibrium is maintained by properties of the power balance terms themselves without an active burn control system. Me... | A year after a tsunami triggered meltdown at a Japanese nuclear plant, New Scientist examines the knock-on effects | eng_Latn | 4,324 |
Magnetron sputtering: basic physics and application to cylindrical magnetrons | Magnetron sputtering sources can be defined as diode devices in which magnetic fields are used in concert with the cathode surface to form electron traps which are so configured that the E×B electron‐drift currents close on themselves. Coaxial cylindrical magnetron sputtering sources in which post or hollow cathodes ar... | A series of low pressure shock experiments were conducted at the one-stage light gas gun for MB2 magnesium alloy.The resulting wave profiles containing corresponding dynamic behavior of material are obtained with VISAR technique.Using an analytical method considering interaction of elastic wave and plastic wave,low pre... | eng_Latn | 4,325 |
Resistive Magnetohydrodynamic Simulations of Relativistic Magnetic Reconnection | Resistive relativistic magnetohydrodynamic (RRMHD) simulations are applied to investigate the system evolution of relativistic magnetic reconnection. A time-split Harten-Lan-van Leer method is employed. Under a localized resistivity, the system exhibits a fast reconnection jet with an Alfvenic Lorentz factor inside a n... | We address the problem of effectiveness of the high resolution techniques applied to the conditional model. The rationale is based on a definition of the probability of resolution of maximum likelihood estimators which is computable in the asymptotic region of operation (in SNR and/or in large number of snapshots). The... | eng_Latn | 4,326 |
The electrical design of thick film planar filter connectors | A simple method for the design of thick-film planars is established. The minimization of the inductance inherent in the internal filter capacitor is found to be important. An insertion-loss test fixture is investigated and used to measure the insertion loss of two filters. The performance of the higher-inductance filte... | Numerical modeling of dependences ``critical current -- external magnetic field'' for geometrically symmetric $0-\pi$ Josephson junctions is performed. The calculation of critical current is reduced to non-linear eigenvalue problem. The critical curve of the contact is obtained as an envelope of the bifurcation curves ... | eng_Latn | 4,327 |
Electromagnetic instability and stopping power of plasma for relativistic electron beams | The stopping power of a plasma for a relativistic electron beam (REB) is derived by taking a Weibel-type electromagnetic instability into account in a collisionless plasma. A quasi-linear theory is developed to derive the stopping power of the plasma due to the electromagnetic instability. The wave–particle interaction... | Industrial processes involving the manufacture of heat treatment salts such as BaCl at high pressures are becoming possible. Hence, there is a need to search for a specific form of BaCl with excellent thermal properties. Motivated by this, the potential energy surface of BaCl is extensively explored using the unbiased ... | eng_Latn | 4,328 |
Transport of fast particles in turbulent fields | In light of planned ITER operation, it is important to improve understanding of fast particle behavior. This work focuses on the influence of both electrostatic and electromagnetic background microturbulent fields by studying passive fast ions in gyrokinetic turbulence simulations. Since magnetic fluctuations are the p... | This paper deals with the development of a mathematical model for very high power density actively shielded air-core superconducting (SC) machines. The interacting forces of SC coils in the actively shielded SC machine are studied using a two-dimensional analytical approach. The transfer relation methodology is employe... | eng_Latn | 4,329 |
Symmetrical Progressive Erythrokeratoderma. | A case of symmetrical progressive erythrokeratoderma in a 32 year old male patient noticed at the age of 27 years has been described. | A self-similar solution, for the equatorial propagation of axisymmetric point explosion into an inhomogeneous ideal gas permeated by a current-free azimuthal magnetic field, are obtained. The model has been considered here in which the magnetic field is proportional tor−1, but the total energy of the wave is of the inc... | eng_Latn | 4,330 |
Influence of biased electrode on plasma confinement in the Tohoku University Heliac | Observations of an increase in electron density triggered by electrode biasing are reported in the Tohoku University Heliac (TU-Heliac). The biased electrode, which is located deep inside the plasma, induces a strong positive radial electric field, after which the line density increases by a factor of 2, the electron d... | Comparative measurements of the absorption edge of p‐type GaAs and compensated GaAs over a wide temperature range demonstrate that the shape of the edge in such materials is not dependent on phonon interactions, and is attributable to the state of charge of impurities in the material. | eng_Latn | 4,331 |
Flow in a metal hydride chromatographic column | The flow of hydrogen isotopes in a metal hydride chromatographic column is calculated by a one-dimensional finite difference method. The Ergun equation is used to define the gas flow; and equilibrium pressure isotherms are used to define the column holdup. Solid phase loadings are shown to move as a wave front on absor... | As part of the LANL/VNIIEF collaboration a high velocity cylindrical liner driven Hugoniot experiment is being designed to be driven by a VNIEF Disk Explosive Magnetic (flux compression) Generator (DEMG). Several variations in drive current and liner thickness have been proposed. This presentation will describe the LAN... | eng_Latn | 4,332 |
Radiation Hydrodynamics of Gas‐Puff Z‐Pinch Plasmas | Non‐LTE radiation hydrodynamic numerical simulations in 1‐D and 2‐D are performed for multi‐terawatt driven argon and krypton gas puff loads. The influence of enhanced transport coefficients on the plasmas' implosion dynamics and the effects it has on the radiation yield and spectral distribution are discussed. Also pr... | The paper proposes a model of a space power station composed of a Curzon-Ahlborn engine driven by the heat flux supplied by a solar collector. Both design and operational optimizations are envisaged. Universal graphs are drawn for the optimum ratio between the collector and radiator area and for a non-dimensional maxim... | eng_Latn | 4,333 |
Nonlinear effects associated with kinetic Alfvén wave in magnetic islands | Observations show that kinetic Alfven waves (KAWs) play a very important role in turbulence as well as in magnetic reconnection and have also been a topic of debate in the context of particle heating. In this paper, we aim to investigate the effect of magnetic islands on the dynamics of the nonlinear KAW. The formation... | Abstract Some Icelandic concreting materials undergo alkali-aggregate reaction when used with high alkali cement. Due to the low average temperatures in Iceland, the risk of alkali expansion is diminished. Sufficient quantity of Icelandic natural pozzolans can prevent damaging expansion in concretes with reactive aggre... | eng_Latn | 4,334 |
A chain rule in \(L^{1}\left({\operatorname*{div};\Omega}\right)\) and its applications to lower semicontinuity | A chain rule in the space \(L^{1}\left(\operatorname*{div};\Omega\right) \) is obtained under weak regularity conditions. This chain rule has important applications in the study of lower semicontinuity problems for general functionals of the form \(\int_{\Omega}f(x,u,\nabla u) dx\) with respect to strong convergence in... | As part of the LANL/VNIIEF collaboration a high velocity cylindrical liner driven Hugoniot experiment is being designed to be driven by a VNIEF Disk Explosive Magnetic (flux compression) Generator (DEMG). Several variations in drive current and liner thickness have been proposed. This presentation will describe the LAN... | eng_Latn | 4,335 |
Superfluid and unconventional superconductors | Abstract The properties of superfluid 3 He as a well-studied model system of unconventional superfluidity are reviewed. This will include a discussion of BCS theory extended to spin triplet p-wave states, the nodal structure of the energy spectrum and its implications for the thermodynamic and transport properties. Sim... | Abstract : The report contains a brief analysis of the following items: (a) Two-dimensional steady flow (variational method), (b) One-dimensional unsteady flow (variational method), (c) Plasma with finite conductivity (exact solutions), (d) Approximate solutions and linearized equations, (e) New numerical methods, (f) ... | eng_Latn | 4,336 |
Fusion reactor plasma-performance modeling: POPCON analysis | A new method of analyzing plasma performance over large regions of density and temperature space with time-dependent multidimensional transport codes is presented. Contour plots of global plasma parameters are shown to be a valuable tool for determining the impact of very detailed physics on plasma performance. Tokamak... | The fuel oil system and its problems in Zhanjiang Power Plant are summarized in this paper. The application of KMY bubble atomization combustion technology is discussed together with its social and economical benefits. | eng_Latn | 4,337 |
Microscopic damage of materials exposed to glow discharge cleanings in LHD | Abstract Helium glow discharge cleaning (He-GDC) is frequently applied to reduce impurities like oxygen on the plasma facing materials in many plasma confinement devices, including large helical device (LHD). However, there are few reports which evaluated the wall conditioning effect from the point of view of the micro... | This paper briefly introduced the generation,preventive methods and the experience feedback learned from foreign nuclear power stations about electromagnetic-disturbance.At the same time,considering the results of electromagnetic-disturbance test on the site of Ling-ao Nuclear Power Station(I),this paper analyzed the e... | eng_Latn | 4,338 |
Optimization of the snowflake diverted equilibria in the TCV tokamak | In support of the TCV experimental campaign aiming at studying H-mode plasmas with snowflake (SF) divertor, free boundary equilibrium and stability studies were performed with the SPIDER and KINX codes. Due to the high flexibility of plasma shaping capabilities of TCV, SF divertor conditions can be reached for various pl... | Conditions are derived for the construction of total variation diminishing difference schemes with multi-point support. These conditions, which are proved for explicit, implicit, and semi-discrete schemes, correspond in a general sense to the introduction of upwind biasing. | eng_Latn | 4,339 |
Dust-Acoustic Shock Waves in a Self-Gravitating Opposite Polarity Dusty Plasmas With Trapped Ions | The basic characteristics of dust-acoustic (DA) shock waves (DASHWs) in self-gravitating dusty plasmas containing massive dust of opposite polarity, trapped ions, and Boltzmann electrons has been studied. The reductive perturbation technique has been employed to derive standard modified Burgers equation (mBE). The basi... | In this paper a study for very high efficiency targeting 99 % range converter is described. We have proposed a new soft switching boost type chopper based on snubber assisted zero voltage and zero current transition (SAZZ) with output diode fabricated “SiC schottky diode”. The output power of 8 kW with the efficiency o... | eng_Latn | 4,340 |
Peculiarities of Distribution of Electromagnetic and Hydrodynamic Fields for Conductive Electric Current Treatment of Melts in Different Modes | The peculiarities of the redistribution of electromagnetic and hydrodynamic fields for conductive electric current treatment in different modes and with various electrode systems are shown. Mathematical simulation is performed to determine that, depending on the type of the electrode system and the mode of the electric... | In the following lines we present a method for the computation of the characteristic values of the parameter contained in linear differential equations. This method is applicable in certain cases when the equation cannot be reduced to the hypergeometric type. As the special example with which to illustrate our procedur... | eng_Latn | 4,341 |
Linear design considerations for TO-10 candidate experiment | As part of the LANL/VNIIEF collaboration a high velocity cylindrical liner driven Hugoniot experiment is being designed to be driven by a VNIEF Disk Explosive Magnetic (flux compression) Generator (DEMG). Several variations in drive current and liner thickness have been proposed. This presentation will describe the LAN... | The main result of this paper identities certain derived cones to the reachable sets of nonsmooth control systems in terms of quasitangent variational inclusions that generalize the classical variational equation in the theory of O.D.E.. This result extends to nonsmooth control systems an earlier result of the second a... | eng_Latn | 4,342 |
Pulsated convective MHD flow with Hall current, heat source and viscous dissipation along a vertical porous plate | The convective MHD flow past a uniformly moving infinite vertical porous plate with Hall current, viscous dissipation, heat source and variable suction has been analyzed. The free stream velocity oscillates about a mean value. A pulsated suction is taken into account. Analytical solutions are obtained using perturbatio... | Dynamical properties of hole carriers introduced in the strongly correlated electron systems, i.e. the Mott-Hubbard insulators, are theoretically studied by using both the moment method and the operator transformation method. Particular emphasis is put on effects of the quantum spin fluctuation on the dynamics. | eng_Latn | 4,343 |
Non-inductive current drive using second harmonic electron cyclotron waves on the WT-3 tokamak | A plasma current of up to 70 kA has been sustained in WT-3 discharges by second harmonic (2Ωe) electron cyclotron (EC) waves alone, with zero loop voltage, after shutting off the Ohmic heating power. Further, in the case of high power EC wave injection, ramp-up discharges have been obtained. Pulse height analysis of ha... | Warp yarns in their different applications during weaving processes are often required to support loads, either in a static manner (simple tensile) or in a dynamic one (fatigue). For this reason, the investigation into the variations of the mechanical behavior of warp yarns during weaving condition is important. The pu... | eng_Latn | 4,344 |
Linear tearing modes calculation for diverted tokamak configurations | Writing the expression of the potential energy in terms of the perturbation of the flux function, and performing an Euler minimization, one obtains a system of ordinary differential equations in that perturbation. For a diverted configuration, the usual vanishing boundary conditions for the perturbed flux function at t... | Conditions are derived for the construction of total variation diminishing difference schemes with multi-point support. These conditions, which are proved for explicit, implicit, and semi-discrete schemes, correspond in a general sense to the introduction of upwind biasing. | eng_Latn | 4,345 |
Controlling the Plasma Potential Distribution in Segmented-Electrode Hall Thruster | Segmented electrodes and ceramic spacers (CSs) placed along the Hall thruster channel are shown to produce strong modifications of axial and radial plasma potential distributions as compared to conventional non segmented thruster. These modifications are associated with differences in secondary-electron-emission proper... | This work was supported by the UK Engineering and Physical Sciences Research Council (EPSRC) grant EP/K02924X/1. E.O.R. is supported by an EPSRC DTA studentship (University of Cambridge), and F.D.D. is supported by the Honorary Vice-Chancellor’s Award and a Qualcomm/DTA Studentship. | eng_Latn | 4,346 |
Design of Nonlinear Transmission Lines Comb Generator | A comb generator is designed based the theory of harmonic generation of nonlinear transmission lines(NLTL)and the theory of soliton wave.To simulate the comb generator,the gradually scaled nonlinear transmission lines are used consisting of five segments which have different Bragg cutoff frequency.The test results show... | Abstract Reducing the specimen-probe spacing to increase the sensitivity of measurement of weak remanence in geological samples, etc. introduces potential inaccuracies. These are analysed by comparing the field distributions derived for transversely magnetized cylinders with those for dipoles and for nulling coils. An ... | eng_Latn | 4,347 |
Operational characteristics and discharge mechanisms of quasisteady magnetoplasmadynamic(MPD) arcjet for space propulsion. | Experimental researches on the operational performance and the arc structure of a quasisteady magnetoplasmadynamic (MPD) arcjet was made to develop a high-performanceaccelerator in space. The results showed that the current pattern, which depended strongly on gas species and discharge current levels, influenced the thr... | Microwave-driven smart material actuators were first envisioned and developed as the best option to simplify the complexity and weight of hard wired networked power and control for smart actuator arrays. A power allocation and distribution scheme (PAD) was originally devised to simplify the wiring of thousands of contr... | eng_Latn | 4,348 |
Semi-empirical Evaluation of the Plasma Internal Inductance in Tokamaks | In this paper we presented an analytical and experimental approach for measurement of the plasma internal inductance in IR-T1 tokamak. For this purpose, a diamagnetic loop with its compensation coil, and also an array of magnetic probes were designed, constructed, and installed on outer surface of the IR-T1 tokamak cha... | This chapter contains sections titled: Introduction Identification of the Best Linear Approximation Using Random Excitations Generation of Uncertainty Bounds? Identification of the Best Linear Approximation Using Periodic Excitations Advises and Conclusions ]]> | eng_Latn | 4,349 |
Design and Main Parameters of the High Energy Booster Quadrupole Cold Mass for the SSC | CEA/Saclay has a long standing tradition in the area of High Energy Physics, both in equipement and experiments. In the field of Superconducting magnets for accelerators, one can recall the HERA Superconducting quadrupoles1, and the work presently being made on the LHC Superconducting quadrupoles2. | A parasitic compensated single amplifier SC biquadratic filter exactly equivalent to Fleischer-Laker two-OA biquad is described. | eng_Latn | 4,350 |
Giant sawtooth oscillations in the Doublet III tokamak | Large-amplitude sawtooth oscillations have been observed in the soft-X-ray emission, central electron temperature, neutron production rate, radiated power, Dα emission, fast-neutral flux and one-turn voltage during beam-heating experiments in the Doublet III tokamak. The necessary conditions for the appearance of giant... | This study investigates the effects of Pierson-Moskowitz, Jonswap spectrum that are typical irregular wave spectrums for wind turbine system with jacket support structure. Also various offshore environmental parameters based on korean local condition were used in our study. The loads acting on the system was considered... | eng_Latn | 4,351 |
Magnetic Field Variation Caused by Rotational Speed Change in a Magnetohydrodynamic Dynamo | We have performed numerical magnetohydrodynamic dynamo simulations in a spherical shell with rotational speed or length-of-day (LOD) variation, which is motivated by correlations between geomagnetic field and climatic variations with ice and non-ice ages. The results show that LOD variation leads to magnetic field vari... | Abstract Mathematical modelling for a class of flexible robot with two links and three joints is considered in this paper. Assume that one of the two links is elastic and that the deformatin of the elastic link happens along any direction perpendicular to the longitudinal axis of the elastic link. Using the dynamics an... | eng_Latn | 4,352 |
Overview of nonlinear theory of kinetically driven instabilities | An overview is presented of the theory for the nonlinear behavior of instabilities driven by the resonant wave particle interaction. The approach should be applicable to a wide variety of kinetic systems in magnetic fusion devices and accelerators. Here the authors emphasize application to Alfven were driven instabilit... | A new version of the noncoherent method for estimating the signal/noise parameter β K of the ionospheric signal (IS) is proposed. The comparative analysis is performed, and it is shown that the analytical (relative) accuracy of determination of β K by the new method exceeds the accuracy of a widely used standard proced... | eng_Latn | 4,353 |
Modes of perturbation of a diffuse linear pinch: the Bessel function model | The low frequency wave and instability spectrum of a cylindrical, uniform density, zero beta plasma in a Bessel function magnetic field is analysed. The analysis has application to wave heating of reversed field pinches and energy propagation in, and instabilities of, twisted solar coronal loops. A surface Alfven wave ... | In this paper, a numerical method is given for solving fuzzy Fredholm integral equations of the second kind, by using Bernstein piecewise polynomial, whose coefficients determined through solving dual fuzzy linear system. Numerical examples are presented to illustrate the proposed method, whose calculations were implem... | eng_Latn | 4,354 |
Electric and magnetic fields of 50 Hz are not associated with sudden infant death syndrome | Sudden infant death syndrome (SIDS) is a multifactorial condition. Power frequency magnetic fields have been implicated in SIDS. Through the use of a case-control study measuring 50 Hz electric and magnetic fields at the SIDS baby's last head position, no association could be found between SIDS and either electric (p =... | In support of the TCV experimental campaign aiming at studying H-mode plasmas with snowflake (SF) divertor, free boundary equilibrium and stability studies were performed with the SPIDER and KINX codes. Due to the high flexibility of plasma shaping capabilities of TCV, SF divertor conditions can be reached for various pl... | eng_Latn | 4,355 |
On a Ballistic Method for Double Layer Regeneration in a Vlasov-Poisson Plasma | Double layers generated by a current‐driven instability are usually alive for only a short time and destroyed by emitting solitons and other nonlinear waves. It is analytically shown that they can be regenerated in a one‐dimensional Vlasov–Poisson plasma system where the upstream velocity distribution is swiftly heated... | In this paper, we consider the second order wave equation discretized in space by summation-by-parts-simultaneous approximation term (SBP-SAT) technique. Special emphasis is placed on the accuracy analysis of the treatment of the Dirichlet boundary condition and of the grid interface condition. The result shows that a ... | eng_Latn | 4,356 |
Modeling of Surface-Wave-Sustained Plasmas in Static Magnetic Fields: A Tool for the Study of Magnetically Assisted HF Plasmas | It is now well recognized that magnetically assisted high frequency (HF) plasmas exhibit a number of characteristics that are of interest for thin film deposition or for the reproduction of narrow patterning during the fabrication of electronic components. Such plasma reactors are now in use in Japanese factories but t... | A new multi-sensor optimal information fusion criterion weighted by scalars is presented in the linear minimum variance sense. The criterion considers the correlation among local estimate errors, and only computing the weighted scalar coefficients is needed. Therefore the computational burden can obviously be reduced, ... | eng_Latn | 4,357 |
[Effect of purified pre-beta 1 HDL on efflux of 3H-cholesterol loaded in human smooth muscle cells]. | OBJECTIVE ::: To compare the effects of different HDL subclasses on the efflux of 3H-cholesterol loaded human smooth muscle cells (SMCS). ::: ::: ::: METHODS ::: 3H-cholesterol loaded human SMCS were incubated with purified pre-beta 1 HDL, alpha-HDL and apoE-deficient HDL3 respectively. The cholesterol effluxing capaci... | In this paper, the steady magnetohydrodynamic (MHD) mixed convection boundary layer flow of an incompressible, viscous and electrically conducting fluid over a stretching vertical flat plate is theoretically investigated with Hall effects taken into account. The governing equations are solved numerically using an impli... | eng_Latn | 4,358 |
MHD stability in a nonparaxial open system with ring-shaped mirrors | The flute stability of a low-pressure plasma in a system containing end confinement systems, formed on the side away from the axis, in necks with a divergent magnetic flux, is analyzed. When a confinement system of this sort is combined with a ''steep'' mirror system in which a certain layer is stable with respect to t... | In an earlier paper by the author the problem of determining the optimum symmetrical weighting factors for a video MTI radar was discussed. This paper extends this work so as to remove the symmetrical restriction from the problem. In addition, for a staggered pulse system, optimum times of transmission are determined. ... | eng_Latn | 4,359 |
Effect of hydrogen on the magnetic properties of Y2Fe14B | The effects of hydrogen on the intrinsic magnetic properties (saturation magnetization, anisotropy, Mossbauer spectra) of Y2Fe14BHx are studied for 0⩽x⩽3.37. The increase in Curie temperature, dTc/dx⋍30 K for x<1, is related to a slight increase in iron moment on hydrogenation. there is a sharp fall in the anisotropy c... | As part of the LANL/VNIIEF collaboration a high velocity cylindrical liner driven Hugoniot experiment is being designed to be driven by a VNIEF Disk Explosive Magnetic (flux compression) Generator (DEMG). Several variations in drive current and liner thickness have been proposed. This presentation will describe the LAN... | eng_Latn | 4,360 |
What is "Meissner effect" Use for?? | It is not really of great practical use because it only occurs with superconductors, most effectively with type 1 supercondustors which have to be cooled to around -265 Centigrade. This is not very practical. The Meissner effect is also quenched by large magnetic fields. | YES. Mitchell & Ness could tell you. \nThey are a very reputable business. \nTheir products are outstanding.\nCheck them out.\nhttp://home.mitchellandness.com/mn/home.html | eng_Latn | 4,361 |
If plasma (4th stage of matter) can be controlled by thermo, magnetic or electro fields, just what are examples of how it's done by/with each?\n\nI'm trying to understand practical (even theoretical) applications for plasma but with a little bit of a layman's explanation. Not just the "what" but a brief explanation of... | Well most plasmoids are charged, since they are ionic in nature, allowing for fairly easy control via electromagnetic fields.\n\nEasiest practical example is a plasma torch (also called a plasma cutter) used in the steel industry. A VERY powerful electric arc is created at the front end of a nozzle through which a very... | Monkeys, dogs, rabbits, and mice are just a few of the animals used in research. Wikipedia.org has a very comprehensive article detailing the types of animal and tests performed on them. An example: rabbits were used to test mascara and eye since their eyes didn't tear, IAMS uses dogs to test new foods. Peta.org is ... | eng_Latn | 4,362 |
what is icp-ms used for | Inductively coupled plasma (ICP) mass spectrometry (MS) is routinely used in many diverse research fields such as earth, environmental, life and forensic sciences and in food, material, chemical, semiconductor and nuclear industries. | An inductively coupled plasma (ICP) is a type of plasma source. Electromagnetic induction creates energy in the source by causing ions to circulate. Movement of the ions generates energy in the form of heat.peration [change | change source]. Inductively coupled plasma sources usually use argon as a fuel. Unfortunately,... | eng_Latn | 4,363 |
what are the characteristics of plasma | A plasma is a hot ionized gas consisting of approximately equal numbers of positively charged ions and negatively charged electrons. The characteristics of plasmas are significantly different from those of ordinary neutral gases so that plasmas are considered a distinct fourth state of matter.. | A plasma is more like a gas than any of the other states of matter because the atoms are not in constant contact with each other, but it behaves differently from a gas. It has what scientists call collective behavior. | eng_Latn | 4,364 |
Pedestal break-point formation of fusion plasma profiles - a possible tool for diagnostics | An analysis is made of the central expansion form of solution for a nonlinear reaction-diffusion equation in order to determine the break-point (knee) in the profile of a bounded fusion plasma. A suggestion is made of using the break-point as a check-point for numerical studies or as a tool for diagnostic purposes. | In this paper, we have presented an effective yield improvement methodology that can help both manufacturing ::: foundries, fabless and fab-lite companies to identify systematic failures. It uses the physical addresses of failing bits ::: from wafer sort results to overlay to inline wafer defect inspection locations. T... | eng_Latn | 4,365 |
Plasma Wake Accelerators: Introduction and Historical Overview | Fundamental questions on the nature of matter and energy have found answers thanks to the use of particle accelerators. Societal applications, such as cancer treatment or cancer imaging, illustrate the impact of accelerators in our current life. Today, accelerators use metallic cavities that sustain electricfields with... | No matter the size of the hydro plant, if it has a long waterway and will operate in peaking mode, the project designer needs to address the issue of hydraulic transients-known as water hammer-early in the design. This article describes the application of transient analysis to the design of a 20-MW hydro plant in Calif... | kor_Hang | 4,366 |
Improvement of Energy Efficiency for Combined Heat and Power System via Kuhn-Tucker Algorithm | This paper presents a novel design procedure for optimizing power distribution strategy in combined heat and power system. The optimal control problem was formulated as a nonlinear optimization problem subject to set of constraints. The resulting problem was solved using the Kuhn-Tucker method. Computer simulation resu... | A Chandra LETGS X-ray observation of α Centauri with an exposure time of 81.5 ks is presented with the two components (K1V and G2V) spectrally resolved for the first time. We use the emission lines from the individual spectra to determine plasma temperatures and find similar temperatures as for the Sun with higher temp... | eng_Latn | 4,367 |
Generation of Field Aligned Current During Substorm | A mechanism for the generation of field aligned currents during magnetospheric substorms is presented. The energy which is injected to the geomagnetic tail is converted into plasma flow energy in solar and anti-solar directions. When the flow meets the inner magnetosphere, a viscous interaction occurs. This interaction... | To overcome the nonlinear harmonic distortion,which is introduced by the inconsistencies between the frequency response of the loudspeaker units in digital loudspeaker system,three mismatch-shaping dynamic element matching algorithms are designed and implemented based on the 3 bit modulation coding,in reference to prev... | eng_Latn | 4,368 |
Radial variations of large‐scale magnetohydrodynamic fluctuations in the solar wind | Two time periods are studied for which a relatively complete set of magnetic field and plasma measurements are available at both 1 AU (from IMP 8 and ISEE 3) and near 4 to 5 AU (from Voyager 1). One of these periods is characterized by the predominance of corotating streams, whereas many transient flows were observed i... | This paper presents the methodology and the physical models implemented in our computational code to predict the flow field over a Mars Sample Return Orbiter entering a Mars-like atmosphere. Because no validation against flight data or experiments can be done at present, the results obtained here are compared to other ... | eng_Latn | 4,369 |
Ball Lightning as a Self-Organized Complexity | The ball lightning phenomenon is explained in the frame of a self-organization scenario suggested by experiments performed on the spontaneously generated complex spherical space charge configuration in plasma. Originated in a hot plasma, suddenly created in a point where a lightning flash strikes the Earth surface, the... | Abstract Perturbed correction to the heteroclinic orbit of a rf-driven Josephson system is derived from a direct perturbation technique. Theoretical analysis reveals that boundedness conditions of the orbit contain Melnikov criterion for the onset of chaos. Current–voltage characteristic associated with the bounded cha... | eng_Latn | 4,370 |
Bifurcation of nonlinear elliptic system from the first eigenvalue, Electron | We study the following bifurcation problem in a bounded domain in IR N : 8 : pu = juj jvj v + f(x; u; v; ) in qv = juj jvj u + g(x; u; v; ) in (u; v) 2 W 1;p 0 () W 1;q 0 () : We prove that the principal eigenvalue 1 of the following eigen- value problem 8 | It is shown that a finite-amplitude ion-acoustic wave in a uniform magneto- plasma can enhance two-dimensional plasma vortices. The latter results from a modulational instability. The growth rates are obtained analytically. | eng_Latn | 4,371 |
Phased high frequency current for energy collection in solar arrays | Abstract The new method for collecting energy from large area solar arrays in space is suggested. The solar array is made as thin film covering the rotating disk of a large radius. Electric power generated in the disk due to solar radiation absorption is converted into HF (High Frequency) current, but not into direct c... | In this paper we use the SSWICH-SW software to calculate the (nonlinear) plasma potential near the ASDEX Upgrade 3-strap antenna for various operating parameters, and compare it with the (linear) parallel electric field strength and the (linear) RF potential. It is believed that the plasma potential is the cause of ion... | eng_Latn | 4,372 |
Magnetic field generation by pointwise zero-helicity three-dimensional steady flow of incompressible electrically conducting fluid | We introduce six families of three-dimensional space-periodic steady solenoidal flows, whose kinetic helicity density is zero at any point. Four families are analytically defined. Flows in four families have zero helicity spectrum. Sample flows from five families are used to demonstrate numerically that neither zero ki... | The first two parts of this series have developed the analysis of solid rotor machines for both flat and cylindrical models of infinite length. 1,2 The objective of this part is to present a representation of a finite length, flat model so that a correction for end effects may be incorporated in the operational impedan... | eng_Latn | 4,373 |
Experimental Studies of Seed-Free Pure-Inert-Gas Working MHD Power Generation | We describe the first MHD power generation experiment with seed-free high temperature inert gas (argon) plasma in a linear shaped Faraday type generator. The working gas with a total pressure and total temperature of 0.15 MPa and 9000 K, and a thermal input to the generator of 0.18 MW was produced using a single-pulsed... | The survival of energy plants during the construction of the Three-Gorges Reservoir Project was investigated based on the specific geography and climate characteristics in this area.Some protective measures for energy plants were put forward in order to support government decision-making for development of biomass ener... | kor_Hang | 4,374 |
Large diameter melting by sparks | Abstract The causes of serious metallic melting due to discharges in the insulating gas of the Daresbury Tandem are examined. It is concluded that the damage is produced when the return stroke of the discharge experiences an impedance mismatch on re-entering the original single spark channel. The damage is at the site ... | Abstract An exact, three-dimensional, analytical description of the current distribution in the nozzle of an MHD channel, under imposed open conditions, is obtained. Strong vorticity of the current flow and high current concentration in the small regions toward the one side of the sidewalls and near the exit of the cha... | eng_Latn | 4,375 |
Magnetic Pressure as a Scalar Representation of Field Effects in Magnetic Suspensions | Magnetic microsphere suspensions undergo complex motion when exposed to finite sources of the magnetic field, such as small permanent magnets. The computational complexity is compounded by a difficulty in choosing a suitable choice of visualization tools because this often requires using the magnetic force vector field... | The topic of this volume, Particle Acceleration in Cosmic Plasmas, is the first in a series of three broad topics, each intended for a volume in Space Science Reviews and the Space Science Series of ISSI, that cover aspects of astrophysical plasma phenomena on all scales, from the Earth’s magnetosphere to the scale of ... | eng_Latn | 4,376 |
Turbulence and anomalous tokamak transport control by Geodesic Acoustic Mode | The elementary process of turbulence control by Geodesic Acoustic Modes (GAMs) leading to modulation of its level at the GAM frequency is for the first time supported by experimental observations at the FT-2 tokamak. The modulation effect is confirmed by the global total-distribution-function gyrokinetic modelling of t... | The steel structure of Hefei Xinqiao Airport Terminal is long-spanned and complicated,and some beams are truss beams and their sections are inverted triangle,so the simulation analysis of the construction process is necessary to ensure the smooth construction of the project.In this paper,by using the ETABS software,the... | eng_Latn | 4,377 |
Experimentally obtained values of electric field of an atmospheric pressure plasma jet impinging on a dielectric surface | We report on experimentally obtained values of the electric field magnitude on a dielectric surface induced by an impinging atmospheric pressure plasma jet. The plasma plume was striking the dielectric surface at an angle of 45°, at 5 mm from the surface measured at the axis of the jet. The results were obtained using ... | In this paper, we consider the second order wave equation discretized in space by summation-by-parts-simultaneous approximation term (SBP-SAT) technique. Special emphasis is placed on the accuracy analysis of the treatment of the Dirichlet boundary condition and of the grid interface condition. The result shows that a ... | eng_Latn | 4,378 |
[Introduction to partial seizures]. | A short introduction on the history, nature, type, classification and incidence of the partial seizures is done. The most suitable diagnostic studies and the used pharmacological and surgical methods of treatment for these type of seizures and which give a better quality of life. | We propose a simple scheme to start a parton-shower evolution description from a given jet configuration in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation events. This allows a convenient combination of the full angular information content of matrix elements with the detailed sub-jet structure of parton showers, and should... | eng_Latn | 4,379 |
Interactions of a plasma and an incoming ow at Mach 3 | Abstract A mechanical spike is a device used to mechanically act on the bow shock ahead of an airplane in supersonic flight. This action results in improved flight conditions. We will investigate here the eects of the axial generation of a two-hundred-micrometer width cylindrical plasma ahead a quasi-realistic nose pro... | Three phase asynchronous motor speed regulating theory is introduced in details in order to get motor speed regulating mechanical property.Based on matlab M language,it can accomplish speed regulating mechanical property of frequency regulation and slip regulating.M language program is easy and simulation figure is dir... | eng_Latn | 4,380 |
Features of electron density and temperature in the 500–3500 km region of the plasmasphere—(1) Dawn and dusk sectors | Dawn-dusk features of the plasmasphere are examined for intervals in February and September 1969, using electrostatic probe data ofN e andT e from the ISIS-I satellite. Clear plasmatrough formation is seen in the vicinity of 70° geomagnetic latitude in both dawn and dusk sectors in the 1500–3500 km region, but the plas... | A simplified treatment is proposed to study quantitatively the lattice dynamics of CsK, CsRb, and RbK alloy systems. The volume effect on the lattice dynamics of the pure constituent is considered, and the phonon dispersion relations of the local and band modes are obtained forthe Rb0.71K0.29, Rb0.3K0.7, Cs0.7K0.3, Cs0... | eng_Latn | 4,381 |
Energy and angular distributions in dissociative photodetachment of O−4 | An anisotropic product angular distribution has been observed in the dissociative photodetachment of O−4 at 523 nm. Energy and angular distributions of coincident O2 products from the process O−4+hν→O2+O2+e− were measured using translational energy spectroscopy in a fast ion beam. The angular distribution peaks perpend... | In this paper, we extend our previous template analysis of a self-exciting Faraday disc dynamo with a linear series motor to the case of a nonlinear series motor. This introduces two additional nonlinear symmetry-breaking terms into the governing dynamo equations. We investigate the consequences for the identification ... | eng_Latn | 4,382 |
Fan instability and limitation of the runaway-electron current | The effect of the fan instability of the runaway-electron tail on the dynamics of the acceleration of these electrons by the electric field is analyzed. A system of equations describing the conversion of the electron energy from longitudinal to transverse and also describing the anomalous electron thermal conductivity ... | In this paper we study a degenerate evolution system ::: $\mathbf H_t +\nabla \times [|\nabla \times \mathbf H|^{p-2}\nabla \times \mathbf H]=\mathbf F$ in a bounded domain as well as its limit as $p\to \infty$ subject ::: to appropriate initial and boundary conditions. This system governs the evolution ::: of the magn... | eng_Latn | 4,383 |
Kinetic simulation of the Kelvin‐Helmholtz instability at the Venus ionopause | Two dimensional hybrid simulations with particle ions and fluid electrons are used to calculate the kinetic evolution of the Kelvin-Helmholtz instability at a boundary similar to the ionopause at the planet Venus. The magnetic field has been chosen to be essentially transverse to the plasma flow velocity, which is the ... | With the help of maple,new explicit solitrary wave solutions of KdV-Burgers equation was obtained by bifunction method and Wu-eliminition method,thus the bifunction method was further complemented. | eng_Latn | 4,384 |
The magnetic field homogeneity of coils by means of the space harmonics suppression of the current density distribution | Abstract. Electromagnetic coils are ubiquitously used in the modern world in motors, antennas, etc. In many applications (magnetic field coil calibration and nuclear magnetic resonance spectroscopy and imaging) there is a strong need for a homogeneous magnetic field. In this paper, we propose a simple modelling based o... | To apply continuation of potential field in spatial domain,Fredholm integral equation of the first kind has to be solved numerically.Because the coefficient matrix that comes from discretizing integral equation is not sparse and has very large scale,it requires large computer memory to save the matrix,and operation on ... | eng_Latn | 4,385 |
Motion of a two-temperature plasma in the channel of a disc-type magnetohydrodynamic generator | A study was made of the fully developed homogeneous flow of a two-temperature partially ionized plasma in the channel of a disc-type Hall generator. Experiments with a disc-type generator are described in [1, 2]. In a simplified statement, the problem is analogous to that considered in [3]. The present article takes th... | Abstract The convergence properties of Machenhauer’s nonlinar normal-mode initialization scheme are explored. Only adiabatic initialization is considered. Several models are used, including an f-plane model. a numerical weather prediction model, and simple linear models with analytic solutions. The last are used to est... | eng_Latn | 4,386 |
Generation of an electron cyclotron resonance plasma using coaxial‐type open‐ended dielectric cavity with permanent magnets | A high density, uniform, and compact electron cyclotron resonance (ECR) plasma source which utilizes surface‐wave radiation and a near‐surface magnetic field is described. The microwaves propagated through a coaxial waveguide are introduced circularly into the circumferential side of a dielectric Al2O3 disk, which is p... | Abstract In this paper, we delve into the dynamics of a barothropic relaxing medium under pressure perturbations originating from blast wave explosions in the milieu. Analyzing the problem within the viewpoint of the Lyakhov formalism of geodynamic systems, we derive a complex-valued nonlinear evolution equation which ... | eng_Latn | 4,387 |
SADE: The starspot and dynamo explorer | Abstract We propose a mission called SADE, the Starspot And Dynamo Explorer, to study dynamo activity in nearby late-type stars. The onboard instruments will be a Ca-K telescope for magnetically dominated chromospheric emission, and an X-ray grazing incidence telescope to study coronal emission. We design the mission f... | This paper presents the recent development of the pulsed power technology based on inductive energy storage (including Superconducting Magnetic Energy Storage, SMES) and its opening switch. It also introduces several circuit topologies with power electronics/superconducting opening switch. | eng_Latn | 4,388 |
With the symbol Wb what is the unit of magnetic flux? | schoolphysics ::Welcome:: HOME > AGE 16 - 19 > ELECTRICITY AND MAGNETISM > ELECTROMAGNETISM > FLUX AND FLUX DENSITY Flux and flux density To understand the meaning of magnetic flux (Φ) and magnetic flux density (B) think first about an ordinary bar magnet. Around the magnet there is a magnetic field and this gives a �f... | NWS JetStream MAX - Beaufort Wind Force Scale JetStream Max: Beaufort Wind Force Scale Sir Francis Beaufort Rear-Admiral, Sir Francis Beaufort, was born in Ireland in 1774. He entered the Royal Navy at the age of 13 and was a midshipman aboard the Aquilon. By 1800 he had risen to the rank of Commander. In the summer of... | eng_Latn | 4,389 |
How does flatulence travel through the room when opening a window? When the smell in my room seems to be full of flatulence(it wasn't me), what happens with the gases when I open a window? Detail: It is winter and the air outside is cold whereas the air in the room is warm. When I close the window the smell of flatulen... | When I open a window to air out the room, how does the smell disperse? Let's say I'm in a room with some kind of noxious stink, possibly of flatulent nature. The quickest way to right the world that comes to mind is to open a window. When I open a window, how do the stank particles leave the room? | Was Kylo Ren's Blaster Bolt Freezing Really Force Telekinesis? In this questions answer its stated that Kylo Ren freezes the blaster bolt in midair with telekinesis: Because he is extremely skilled in Force telekinesis, Kylo Ren is able to freeze not just objects but even blaster bolts in midair. But as a com... | eng_Latn | 4,390 |
Why do higher level players move between each attack? I always see players move between every attack, even if they are attacking a stationary target (for instance a tower) and there is no theat close that would make their current position worth changing? I think this practice is called "kiting". So why are they doing... | Attack moving or Attack Canceling I watch streams sometimes and i see the high elo Ranged AD move between each shot. Do they gain anything with this? And if so whats a good way to practice it. | Was Kylo Ren's Blaster Bolt Freezing Really Force Telekinesis? In this questions answer its stated that Kylo Ren freezes the blaster bolt in midair with telekinesis: Because he is extremely skilled in Force telekinesis, Kylo Ren is able to freeze not just objects but even blaster bolts in midair. But as a com... | eng_Latn | 4,391 |
Airfoil theory --- Why does air travel faster above? I do not understand, why the air above the airfoil travels faster than the air below it? The air above has to travel faster than the air below so that both streams meet simultaneously at the trailing edge --- why do the streams have to meet simultaneously ? PS : I ... | Why does the air flow faster over the top of an airfoil? I understand the common explanation of lift, which describes the airflow over the top of the wing as moving faster than the air below the wing. However, I don't quite understand why the air moves faster. I've read some explanations citing a circulation effect a... | Was Kylo Ren's Blaster Bolt Freezing Really Force Telekinesis? In this questions answer its stated that Kylo Ren freezes the blaster bolt in midair with telekinesis: Because he is extremely skilled in Force telekinesis, Kylo Ren is able to freeze not just objects but even blaster bolts in midair. But as a com... | eng_Latn | 4,392 |
The original Pons/Fleischmann experiment was deeply flawed, and it seems the same errors are reproduced in followup experiments these past 30 or so years. The Pons/Fleischmann apparatus was not properly purged of He before the experiment. An independent examination of their electrodes, ‘Measuring helium in electrolyzed... | Cold fusion is being mentioned a lot lately because of some new setup that apparently works. This is an unverified claim. See for example: ( of that last link in the Wayback Machine, given frequent from that page.) While we should give the scientific community time to evaluate the set up and eventually repl... | I am sitting inside a closed room with a cement ceiling just above my head. The pressure of the atmosphere is exerted on the ceiling from above(outside). But solid cement not being a fluid does not transport that pressure into my room. But i still feel the atm pressure which has no way to be transported into the room.I... | eng_Latn | 4,393 |
Is a GFCI receptacle device a circuit breaker? I have been told that a GFCI receptacle is a "circuit breaker" in the sense that it will trip under overload. Everything I know, have been told, and have read from experts to manufacturers says this is not the case. So the question stands: Is a GFCI receptacle device a ci... | Does a GFCI receptacle provide overcurrent protection? Does a GFCI receptacle provide over-current protection? (note that I'm not referring to GFCI circuit breakers as may be found in a service panel, nor to specialty devices such as an inline plug-in GFCI that may offer over-current protection) I've checked some GFCI... | What exactly happens to the signals hitting a common mode choke? I'm trying to better understand the principles behind the common mode choke. I made a few drawings to clarify. Differential Mode Signals Differential currents (driven by differential voltages) create equal but opposite magnetic fields B in the in... | eng_Latn | 4,394 |
Will these rods increase chances of a lightning stroke on the metallic structure or they will help to save it. Why we need to place lightining rods on a mettalic structure when the whole building itself is a conductor. Placement of lightning rods will increase the height of the metallic building and will it not more s... | you need to place lightining rods as you call them, i call them " ground" rods is to ground out the building per say, that way if struck by lightining, the path of electric is to be grounded out | In physics and chemistry, a plasma is typically an ionized gas, and is usually considered to be a distinct phase of matter in contrast to solids, liquids and gases. "Ionized" means that at least one electron has been dissociated from a proportion of the atoms or molecules. The free electric charges make the plasma elec... | eng_Latn | 4,395 |
Last week, Iran successfully tested a multi-warhead, intercontinental ballistic missile capable of reaching Israel and US bases in the region. This week, they tested an equally menacing torpedo. | why not as long as others like \nIsreal have it. | A Tokamak is a machine that creates a doughnut-shaped magnetic field; a plasma (basically a bunch of ionized atoms, each with a positive or negative charge) gets trapped in the magnetic field, which we call being “confined” by the field. By manipulating the magnetic field and the quantity of plasma, extremely high pre... | eng_Latn | 4,396 |
How does cold plasma differ from regular plasma? | How is cold plasma different from regular plasma? | Nuclear Fusion: Can magnetically contained plasmas tunnel through the confinement? | eng_Latn | 4,397 |
what is fluxus group | Fluxus is an international avant-garde group or collective that was founded and flourished in the1960s but still continues today. | Flux-Cored Arc Welding was introduced in the 1950s. It is a process that is very closely related to Metal Inert Gas Welding. Both processes use similar equipment and continuous wire feeds, and both MIGW and FCAW use the same type of power supply. | eng_Latn | 4,398 |
I made a plasma vortex at my home, but why doesn't it produce a zapping sound like at time when we see sparks and does the air nearby it ionizes? | I made a plasma vortex at my home, but why doesn't it produce a zapping sound like at time when we see sparks and does the air nearby it, ionizes? | Saying that zero point energy is infinite and that there are infinite potential virtual particles in vacuum is real or a mathematical thing? | eng_Latn | 4,399 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.