scholarly journals Some features of nanodispersed and micron-size nickel powders produced by hydrogen reduction in the eddy magnetic field

2016 ◽  
pp. 4-11 ◽  
Author(s):  
V. M. Nguyen ◽  
Yu. V. Konyukhov ◽  
D. I. Ryzhonkov ◽  
S. I. Kotov
Keyword(s):  
Magnetic Field ◽  
Hydrogen Reduction ◽  
Nickel Powders ◽  
Micron Size

scholarly journals The influence of an external magnetic field on the dynamics of magnetite reduction with hydrogen

RSC Advances ◽  
2021 ◽  
Vol 11 (25) ◽  
pp. 15422-15427
Author(s):  
Petr A. Chernavsky ◽  
Nellie V. Kim ◽  
Victor A. Andrianov ◽  
Yurii D. Perfiliev ◽  
Alla A. Novakova ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Magnetic Fields ◽  
Hydrogen Reduction ◽  
Kinetics Of

The kinetics of hydrogen reduction of magnetite was investigated in different magnetic fields.

A micron‐size Hall probe for precision magnetic field mapping

1979 ◽  
Vol 50 (4) ◽  
pp. 2945-2947 ◽  
Author(s):  
H. T. Minden ◽  
M. F. Leonard
Keyword(s):  
Magnetic Field ◽  
Hall Probe ◽  
Field Mapping ◽  
Magnetic Field Mapping ◽  
Micron Size

Utilization of Biocompatible Ferrous Particles for a New Cancer Therapy

2009 ◽  
Author(s):  
Cahit A. Evrensel ◽  
Lisbeth A. Welniak ◽  
Alan Fuchs ◽  
Jigar Patel ◽  
William J. Murphy ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Tumor Growth ◽  
Cell Activation ◽  
System Response ◽  
Iron Particles ◽  
Dendritic Cell Activation ◽  
Scanning Calorimetry ◽  
Carrier Fluid ◽  
Grafted Polymer ◽  
Micron Size

Magneto-rheologiacal Fluid (MRF), suspensions of polarizable micron size particles, is synthesized from suspensions of iron particles (micron and nano size) in phosphate buffered saline (PBS). The iron particles have been surface coated using atom transfer radical polymerization (ATRP) with various polymers, such as poly(N-isopropylacrylamide) (poly(NIPAAm)), and poly(acrylamide) (poly(AAm)). The surface grafted polymer has been characterized using differential scanning calorimetry (DSC), and properties of resulting fluid have been measured using a rheometer. A mathematical model is developed to explore the force induced by the particles on the neighboring tissue under externally applied magnetic field. This force results in the damage of the tumor cell lines and trigger the immune system response. The effect of MRF on primary and metastasized tumor growth were evaluated by using an orthotopic murine breast cancer model (4T1). Tumors were evaluated by growth measurements and histological changes following injection of MRF or carrier fluid alone into the tumor and the effects of subsequent application of a magnetic field to the site. Results indicate slowed tumor growth and increased dendritic cell activation with this therapy and they are encouraging.

Anisotropy of magnetostatic wave group velocities in ferromagnetic waveguides

2016 ◽  
Author(s):  
Гришин ◽  
S. Grishin ◽  
Садовников ◽  
A. Sadovnikov ◽  
Романенко ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetostatic Wave ◽  
Bias Magnetic Field ◽  
External Bias ◽  
Micron Size ◽  
Magnetostatic Waves ◽  
Phase And Group Velocities ◽  
Axis Of Symmetry ◽  
The Difference ◽  
Group Velocities

The results of theoretical and experimental study of anisotropic propagation of magnetostatic waves (MSW) in ferromagnetic thin-film microsize waveguides are presented. Electrodynamic model of tangentially magnetized ferromagnetic waveguide is developed. On the base of the model, the main features in rotation of group velocity vector of volume MSW (VMSW) by rotating a wave vector and a vector of an external bias magnetic field relative to the axis of symmetry of the waveguide are demonstrated. It is shown, that a decrease in a width of the waveguide to the micron size leads to non-reciprocal propagation of VMSW and to increase of angular divergence between the phase and group velocities of VMSW. The experimental research of T-shaped ferromagnetic microwaveguide demonstrates the difference in power levels of a signal that is branched in the shoulders of T-shaped waveguide when the bias magnetic field is rotated in the waveguide plane.

scholarly journals Influence of magnetic field on hydrogen reduction and co-reduction in the Cu/CuSO4 system

2010 ◽  
Vol 55 (28) ◽  
pp. 8664-8672 ◽  
Author(s):  
Dámaris Fernández ◽  
Zhu Diao ◽  
Peter Dunne ◽  
J.M.D. Coey
Keyword(s):  
Magnetic Field ◽  
Hydrogen Reduction ◽  
Co Reduction

SOME NEW POSSIBILITIES OF SUPERHEATED SUPERCONDUCTING GRAIN (SSG) DETECTOR CHARACTERISTICS IMPROVEMENT

1995 ◽  
Vol 09 (13n14) ◽  
pp. 1575-1594 ◽  
Author(s):  
S.G. GEVORGYAN
Keyword(s):  
Magnetic Field ◽  
Applied Magnetic Field ◽  
Operating Mode ◽  
X Rays ◽  
Preparation Technology ◽  
Optimal Operating ◽  
New Methods ◽  
Study Results ◽  
Micron Size ◽  
Spherical Grains

This work is devoted to presentation the detail study results concerning the superconductivity destruction processes in solid colloids of superheated superconducting tin grains (SSG) under the influence of x rays of various energy and intensity, at different values of temperature and applied magnetic field. The research results have revealed the existence of a SSG detector optimal operating mode, permitting the formulation of some practical recipes for improvement of its characteristics. While solving the problem, our group came to the conclusion that more or less serious step forward in the creation of up-to-date and moreover future SSG detectors of ionizing radiation and exotic elementary particles could only be made by significantly improving the preparation technology of micron-size grains and colloids on their basis, and the detailed study of the physics of metastable superheated state of grained superconducting system, as well as by perfecting the old traditional and elaborating the new methods of researches of the above mentioned and analogous objects. This has required the preparation and investigation of a great number of solid colloids of tin spherical grains in paraffin matrix with different sizes of granules and with various average distances between the grains in suspension.

Morphology of Aluminum Nanopowder Combustion Products in a Magnetic Field in Air

2016 ◽  
Vol 685 ◽  
pp. 516-520 ◽  
Author(s):  
Andrei V. Mostovshchikov ◽  
Alexander P. Ilyin ◽  
Irina K. Zabrodina
Keyword(s):  
Magnetic Field ◽  
Homogeneous Magnetic Field ◽  
Combustion Products ◽  
Inhomogeneous Magnetic Field ◽  
Oxidation Products ◽  
Structural Units ◽  
Electron Microscope Investigation ◽  
Aluminum Nanopowder ◽  
Micron Size ◽  
Thermal Flows

The microstructure of aluminum nanopowder combustion crystalline products in air and the influence of a constant magnetic field (with induction of 0.3 T) on their structures have been studied. It was revealed that in the combustion products of free-poured aluminum nanopowder two-level whiskers are present. Hexagonal single crystals are formed by combustion in air in a homogeneous magnetic field, and in case of inhomogeneous magnetic field (with induction of 0.3 T) faceted elongated crystals of micron size are generated. The crystallites of such structure are formed due to the mass transfer of the combustion products in the direction of thermal flows. Ordered six-sided crystal structures are formed by overcooling the oxidation products by the action of magnetic field and by increasing the mobility of their structural units in recrystallization thermal wave. According to electron- microscope investigation the formation of the faceted crystals is possible with optimal sizes of combustion product particles.

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