Magnetic fluid

In what follows the magnetoviscosity phenomenon is analyzed by formulating the local ferrohydrodynamic model, the upscaled volume-average model in porous media with the closure problem, and solution and discussion of a simplified zero-order steady-state isothermal incompressible axisymmetric model for non-Darcy-Forchheimer flow of a Newtonian ferrofluid in a porous medium of the [Pg.379]

Muller type [24, 25]. No turbulence will be accounted for in the present treatment. The Shliomis [26] magnetization relaxation equation has been written in the fluid compressible form according to Felderhof [27]. [Pg.380]

2 gathers the auxiliary equations for the relaxation time, T, ferrofluid dynamic [Pg.380]

Application of magnetic fluids in ultrasonic non-destructive testing [1-3] opens the real perspectives for automation of the testing methods, based on the surface waves. This report presents the results of investigations aimed at the creation of the transducer of the surface waves for the automated control. The basic attention is drawn to the analysis of the position of the front meniscus of the contact liquid when the surface waves excite through the slot gap. [Pg.876]

Calculation of an ultrasonic magnetic system for retaining of a contact magnetic fluid must solve two main problems. [Pg.877]

The calculation on the base of solution (2) and experimental investigations have allowed to choose some constructions of magnetic systems for retaining of a magnetic fluid on the transducer surface for magnetic and non-magnetic materials. [Pg.879]

Baev A.R., Prokhorenko P.P., Konovalov G.E. Acoustical properties and application of Magnetic Fluids to Applied Acoustics - 13 th World Congress on Acoustics. - Belgrade,... [Pg.881]

Prokhorenko P.P., Baev A.R., Grintsevich E.M. Physical Principles and Application of Magnetic Fluids to Ultrasonic Testing -. Journal of Magnetism and Magnetic Materials. -... [Pg.881]

Magnetic fluids Magnetic flux leakagf Magnetic inductions Magnetic level indicator Magnetic materials... [Pg.588]

Dry dense medium (pneumatic fluidized-bed) separation has been used, but has not received wide attention by the industry. An area of promise for future development is the use of magnetically stabilized dense medium beds by using ferro or magnetic fluids (2,10). Laboratory and pilot-scale units such as Magstream are available. In this unit, material is fed into a rotating column of water-based magnetic fluid. Particles experience centtifugal forces and... [Pg.407]

Magnetic separation for ferrous materials eddy-current separation for aluminum electrostatic separation for glass from wastes free of ferrous and aluminum scrap magnetic fluid separation for uouferrous materials from processed wastes... [Pg.2243]

The magnetism of nanocrystallites contained in graphitic cages is intriguing, not only for scientific research, but also for applications such as magnetic fluids, magnetic ink, and so on. [Pg.162]

The first evaluation of a medical procedure using placebo controls occurred some 200 years later. The procedure was mesmerism - now more commonly called hypnosis - as practised by the disciples of the 18th-century Viennese physician Franz Anton Mesmer. Mesmer believed that many illnesses were caused by a bodily imbalance of an invisible magnetic fluid that permeated the universe. Just as antidepressants are used today to restore a presumed chemical imbalance, so Mesmer and his followers used magnetic treatment to restore the magnetic imbalance that they believed was the cause of their patients illnesses. [Pg.104]

Papell, S.S.Low viscosity magnetic fluid obtained by the colloidal suspension of magnetic particles. US Patent (1965) 3,215,572. [Pg.79]

Massart, R.Magnetic fluids and precrursors for obtaining them. US Patent (1982) 4,329,241. [Pg.79]

Moumen, N. and Pileni, M.P. (1996) Control of the size of cobalt ferrite magnetic fluid. Journal of Physical Chemistry, 100 (5), 1867-1873. [Pg.81]

Sulfide minerals were formed mostly hydrothermally from post-magnetic fluids it appears remarkable that the formation of many ore deposits cannot be conclusively explained because of the very low solubility of the corresponding sulfide. Though it was postulated earlier (28, 29, 95) that polysulfido complexes might have been responsible for the transport of metals and sulfur together (80), it was later proved that many discrete polysulfido complexes and clusters of metals exist in polysulfide solutions (see, e.g., 136,138). [Pg.89]

Donselaar, L.N., Philipse, A.P Suurmond, J. (1997) Sedimentation of dilute magnetic fluids and magnetic silica dispersions. Langmuir 6018-6025... [Pg.575]

Stripped magnetite particles. Applications of the double surfactant layer. Principle in the preparation of water based magnetic fluids. J. Colloid Interface Sci. 149 98-104 Wuehn, M, JosephJ., Bagus, P.S. Niklewski.A., Puettner, R., Reis,S., Weiss,W., Martins, M.,... [Pg.644]

Hayashi, S., Saha, S., and Hamaguchi, H.-O., A new class of magnetic fluids bmimJFeGlJ and nbmim[FeCl4] ionic liquids, IEEE Trans. Magn., 42, 12-14,... [Pg.137]

Fig. 8.1.10 Schematic illustration of the apparatus for vapor-liquid reaction. (Reprinted from J Mag Mag. Mater, 122, Iron-nitride magnetic fluids prepared by vapor-liquid reaction and their magnetic properties, 1 Nakatani et al., pp 10-14. Copyrighi 1993. with permission from Elsevier Science.)...

Nanometer-Scale Magnetic Particles and Magnetic Fluids... [Pg.665]

The magnetite particles so produced were stabilized by protective colloids such as gelatin for use in magnetic domain observations. These precipitated magnetite particles are used for production of magnetic fluids, as we describe later. [Pg.665]

Fig. 13.1.4 Schematic picture of dispersion states of particles in magnetic flu ids (a) core particle (b) oil-based magnetic fluid (c) water-based magnetic fluid.

Since the magnetic fluid appeared, techniques for l he production of variety of magnetic fluids including water-based and oil-based magnetic fluids were developed. Recently a number of magnetic fluids prepared by a variety of methods are on markets (19). [Pg.668]

See also in sourсe #XX -- [ Pg.667 , Pg.668 ]

See also in sourсe #XX -- [ Pg.4 , Pg.8 , Pg.70 , Pg.242 , Pg.464 , Pg.491 ]

See also in sourсe #XX -- [ Pg.855 ]

See also in sourсe #XX -- [ Pg.270 ]

See also in sourсe #XX -- [ Pg.218 ]

See also in sourсe #XX -- [ Pg.367 , Pg.378 ]

See also in sourсe #XX -- [ Pg.52 ]

See also in sourсe #XX -- [ Pg.294 ]

See also in sourсe #XX -- [ Pg.14 , Pg.20 , Pg.21 ]

See also in sourсe #XX -- [ Pg.107 ]

See also in sourсe #XX -- [ Pg.177 , Pg.192 ]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...