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Wyniki wyszukiwania dla: magnetic paint
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Magnetic and structural phase transition in Ni50Mn35.5In14.5 ribbon
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Magnetic field microsensor based on GaAs MESFET
PublikacjaA novel concept of the drain separation design in a horizontally-split-drain GaAs MAGFET sensor, based on epitaxial layer growth, was developed. Proper choice of GaAs/AlAs/GaAs epitaxial layer sequence provided good electrical isolation between the drain regions. The measured leakage current between the drain regions was in the range of nA for up to 2V drain voltage bias difference. Performed analytical and numerical calculations...
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Magnetic deep eutectic solvents – Fundamentals and applications
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Electron magnetic resonance study of the Ni47Co3Mn35.5In14.5 ribbons
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On splitting of the NICS(1) magnetic aromaticity index
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Magnetic properties of the garnet and glass forms of Mn3Al2Si3O12
PublikacjaPrezentujemy wyniki pomiarow podatności magnetycznej i ciepła właściwego dla Mn3Al2Si3O12 w formie krystalicznej i amorficznej. W ten sposób przeprowadzamy porównania stopnia magnetycznej frustracji dla obu form tego samego związku chemicznego.
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Magnetic Relaxation in Bismuth Ferrite Micro-Cubes
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Automatic cuts for magnetic scalar potential formulations
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Preparation and characterization of biopolymeric films with magnetic properties
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Magnetic properties of the garnet and glass forms ofMn3Al2Si3O12
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Simulation of compensator of magnetic interference caused by an aircraft .
PublikacjaW badaniach geologicznych Ziemi wykorzystuje się m.in. metodę magnetometryczną. Metoda ta polega na pomiarze indukcji magnetycznej na badanym obszarze. Na podstawie rozkładu pola magnetycznego można zlokalizować różnego rodzaje złoża mineralne. Poszukiwania geologiczne wykonywane są na dużych obszarach z wykorzystaniem samolotu. Samolot w swoim otoczeniu zniekształca pole magnetyczne, dlatego też system pomiarowy musi zawierać...
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Research of leakage magnetic field in deenergized transformer
PublikacjaThe article deals with the issue of the numerical analysis of the magnetic field occurring around the transformer after it has been powered down. The main goal of this analysis was to examine if it is possible to identify the residual fluxes in the transformer legs based on this fields’ measurements. It was also intended to determine the type and the location of magnetic sensors. Numerical analysis of the magnetic field was performed....
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Magnetoacoustic heating in a quasi-isentropic magnetic gas
PublikacjaThe nonlinear heating of a plasma which associates with the transfer of energy of magnetoacoustic waves into that of the entropy mode, is analytically studied. A plasma is uniform and motionless at equilibrium. Perturbations in a plasma are described by a system of ideal magnetohydrodynamic equations. The equilibrium straight magnetic strength and the wave vector form a constant angle which varies from 0 to π/2. There exist four...
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Electric and magnetic properties of Lanthanum Barium Cobaltite
PublikacjaThe cubic Ba0.5La0.5CoO3‐δ was synthesized using solid state reaction. The structural properties were determined by the simultaneous refinement of Synchrotron Powder X‐ray Diffraction and Neutron Powder Diffraction data. Iodometric titration was used to examine the oxygen stoichiometry and average cobalt oxidation state. Low‐temperature magnetic studies show soft ferromagnetic character of fully oxidized material, with θP = 198(3)...
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Reduction of Inrush Current by Demagnetization of Magnetic Core
PublikacjaW artykule przedstawiono demagnetyzację rdzenia transformatora jako metodę ograniczania prądu załączeniowego. W zaproponowanej metodzie źródłem energii wykorzystywanej do rozmagnesowania jest kondensator. W przeprowadzonych obliczeniach symulacyjnych rozważono różne wartości pojemności kondensatora i wartości napięcia w celu określenia optymalnych wartości tych parametrów. Następnie obliczono strumienie szczątkowe, jakie ustalają...
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MAKING OF FERROMAGNETIC ELLIPTICAL SHELL IN TRANSVERSE MAGNETIC
PublikacjaA ferromagnetic object, located in the Earth’s magnetic field, changes its distribution. Through measuring such disturbances, one can locate the object and destroy it. To conceal the object, a special winding is placed inside its ferromagnetic shell, and its task is to eliminate the disturbances in the distribution of the Earth’s magnetic field.
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Mathemathical model of radial passive magnetic bearing
PublikacjaIn the article mathematical radial model of passive magnetic bearings to ocean engineering units has been presented. The units application in underwater thrusters should increase propulsion systems durability and gives lower maintenance costs. The rotor of electric motor is hanging in magnetic field taken from radial passive magnetic bearings. However axial direction maintenance must be controlled with electromagnets and their...
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Performance of lubricated sliding contact in magnetic field
PublikacjaResults of experimental studies concerning theinfluence of permanent magnetic field on wear of lubricatedsliding contact operating at short stroke and highfrequency are presented. It was found that horizontalmagnetic is affecting performance of the contact. Thejagged delamination regions produced in the presence of amagnetic field can be regarded as easily undergoing oxidisationbecause oxygen is readily adsorbed there. Magneticfield...
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Site-selective magnetic order of neptunium inNp2Ni17
PublikacjaWe present the results obtained by superconducting quantum interference device (SQUID) magnetometry, specific heat, and Mossbauer spectroscopy measurements carried out on Np2Ni17 polycrystalline samples. We show that long-range magnetic order, with a moment mu((2b)) similar to 2.25 mu(B), occurs below T-N = 17.5 K on the Np (2b) sites. A nontrivial situation is observed in that the other Np sites (2d) do not take part to the order...
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Recent applications and future prospects of magnetic biocatalysts
PublikacjaMagnetic biocatalysts combine magnetic properties with the catalytic activity of enzymes, achieving easy recovery and reuse in biotechnological processes. Lipases immobilized by magnetic nanoparticles dominate. This review covers an advanced bibliometric analysis and an overview of the area, elucidating research advances. Using WoS, 34,949 publications were analyzed and refined to 450. The prominent journals, countries, institutions, and...
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Magnetic switching of Kerker scattering in spherical microresonators
PublikacjaMagneto-optical materials have become a key tool in functional nanophotonics, mainly due to their ability to offer active tuning between two different operational states in subwavelength structures. In the long-wavelength limit, such states may be considered as the directional forward- and back-scattering operations, due to the interplay between magnetic and electric dipolar modes, which act as equivalent Huygens sources. In this...
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Magnetic deep eutectic solvents – Fundamentals and applications
PublikacjaMagnetic deep eutectic solvents (MDES), a relatively new subclass of conventional deep eutectic solvents (DES) containing additional paramagnetic components in their structure. MDES exhibit a strong response toward external magnetic fields, thus they can improve many industrial and analytical applications. In addition, this new group of solvents present unique physicochemical properties that can be easily tuned by selecting the...
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Structural, magnetic and spectral properties of tetrahedral cobalt(II) silanethiolates: a variety of structures and manifestation of field-induced slow magnetic relaxation
PublikacjaBlue crystals of five heteroleptic cobalt(II) silanethiolates 1–5 have been obtained by the reaction of [Co{SSi (tBuO)3}2(NH3)]2 with aminopyridines and aminomethylpyridines at an appropriate molar ratio and their structural, spectral, thermal and magnetic properties have been established and described. All complexes 1–5 contain Co(II) ions in a tetrahedral CoN2S2 environment formed by (tBuO)3SiS− residues and pyridines and present...
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Evaluation of the Combination of Muscle Energy Technique and Trigger Point Therapy in Asymptomatic Individuals with a Latent Trigger Point
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Fixed point indices of iterates of a low-dimensional diffeomorphism at a fixed point which is an isolated invariant set
PublikacjaLet f be an R^n-diffeomorphism, where n = 2, 3, for which {0} is an isolated invariant set. We determine all possible forms of the sequences of fixed point indices of iterates of f at 0, {ind(f n, 0)}_n, confirming in R3 the conjecture of Ruiz del Portal and Salazar (J Differ Equ 249, 989–1013, 2010).
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Multi-fidelity aerodynamic design trade-off exploration using point-by-point Pareto set identification
PublikacjaAerodynamic design is inherently a multi-objective optimization (MOO) problem. Determining the best possible trade-offs between conflicting aerodynamic objectives can be computationally challenging when carried out directly at the level of high-fidelity computational fluid dynamics simulations. This paper presents a computationally cheap methodology for exploration of aerodynamic design trade-offs. In particular, point-by-point...
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Point cloud in archaeological and historical survey
PublikacjaIn the last decade the potential of using the point clouds in archaeological research has been noted. Therefore, a number of guidelines concerning aspects of data acquisition (resolution and format) were developed. They also included the way of searching the imaged area to identify archaeological and historical cultural heritage sites. The purpose of this research was to analyze the point cloud for selected woodland survey. Forest...
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Point cloud unification with optimization algorithm
PublikacjaTerrestrial laser scanning is a technology that enables to obtain three-dimensional data – an accurate representation of reality. During scanning not only desired objects are measured, but also a lot of additional elements. Therefore, unnecessary data is being removed, what has an impact on efficiency of point cloud processing. It can happen while single point clouds are displayed – user decides what he wants...
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Magnetic anisotropy and structural flexibility in the f ield-induced single ion magnets [Co{(OPPh2) (EPPh2)N}2], E = S, Se, explored by experimental and computational methods
PublikacjaDuring the last few years, a large number of mononuclear Co(II) complexes of various coordination geometries have been explored as potential single ion magnets (SIMs). In the work presented herein, the Co(II) S = 3/2 tetrahedral [Co{(OPPh2)(EPPh2)N}2], E = S, Se, complexes (abbreviated as CoO2E2), bearing chalcogenated mixed donor-atom imidodiphosphinato ligands, were studied by both experimental and computational techniques. Specifically,...
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Rapid multi-objective antenna design using point-by-point Pareto set identification and local surrogate models
PublikacjaAntenna design is inherently a multicriterial problem.Determination of the best possible tradeoffs between conflicting objectives (a so-called Pareto front), such as reflection response, gain, and antenna size, is indispensable from the designer’s point of view, yet challenging when high-fidelity electromagnetic (EM) simulations are utilized for performance evaluation. Here, a novel and computationally...
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Structural and magnetic properties of Cu-alloyed FePd films
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The influence of compensate coils on own ship magnetic field
PublikacjaA ferromagnetic object placed in the earth magnetic field causes a local disturbance in this field distribution. The field distribution disturbance is a function of many arguments like the dimensoins and shape of the object, its ferromagnetic properties ande its positon in relation to the earth magnetic field. in order to minimize the influence of this disturbance one places compensate coils on the ship. Some chosen results of...
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The study of influence of a rotating magnetic field on mixing efficiency
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A new magnetic-hybrid photoreactor for photocatalytic water disinfection
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TiO2-Modified Magnetic Nanoparticles (Fe3O4) with Antibacterial Properties
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The Effect of a Rotating Magnetic Field on the Regenerative Potential of Platelets
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Magnetic properties of BiFeO3micro-cubes synthesized by microwave agitation
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Preparation and characterization of 3D collagen materials with magnetic properties
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Influence of magnetic interaction on lattice dynamics of FeBO 3
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Use of magnetic monitoring of vehicles for proactive strategy development
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Methods of Bacteriophages Production with Application of Alternate Magnetic Field
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Synthesis and magnetic properties of (Ba,Bi)_1.54Rh_8O_16 hollandite.
PublikacjaW pracy przedstawiono wyniki badań nad syntezą, strukturą, właściwościami elektrycznymi i magnetycznymi holandytu (Ba,Bi)_1.54Rh_8O_16. Dodanie bizmutu stabilizuje strukturę hollondytu Ba_xRh_8_O_16. Materiał jest Curie-Weiss paramagnetykiem. Nie zaobserwowano nadprzewodnictwa do temperatury 300mK.
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Rich magnetic phase diagram of the kagome-staircase compoundMn3V2O8
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Nanometer structural columns and frustration of magnetic ordering inNb12O29
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Synthesis and magnetic properties of (Ba,Bi)1.54Rh8O16 hollandite
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System magnetometryczny na samolocie = Magnetic system on an airplane
PublikacjaW badaniach geologicznych Ziemi oraz w wykrywaniu obiektów ferromagnetycznych znajdujących się w wodzie lub w ziemi stosowane są m.in. systemy magnetometryczne zainstalowane na śmigłowcach lub samolotach. W systemach tych stosowane są magnetometry pompowane optycznie oraz SQUID. Pomiary pola magnetycznego na samolocie wymagają kompensacji zakłóceń magnetycznych generowanych przez samolot. W pracy przedstawiono model matematyczny...
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Analysis of magnetic field of Hemholtz's coils and ferromagnetic objects
PublikacjaThe 3-axis fluxgate magnetometer requires conducting a precise calibration in the magnetic field whose value is determined and which is characterized by the high uniformity of the distribution of the field, especially along the axis of the sensors. The generation of the magnetostatic field characterized by the high uniformity, can be achieved by using the Helmholtz's coils. The requirements of the uniformity of distribution of...
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Disturbances of magnetic field in surrounding of mobile, metalic plate
PublikacjaThe uniform magnetic field of the Earth in the surrounding of a mobile, metalic object undergoes deformation by eddy currents. The influence of the moving conducting object on total magnetic field of the Earth depends on the object's shape, position and speed of the changes relative to the magnetic field's vector of the Earth as well as the electric conductivity and the relative magnetic permeability of the material. The disturbances...
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The influence of the filler on the magnetic field distribution in ferromagnetic objects.
PublikacjaDuże obiekty ferromagnetyczne umieszczone w zewnętrznym polu magnetycznym (np. ziemskim polu magnetycznym) ulegają namagnesowaniu. W pewnych przypadkach konieczna jest demagnetyzacja obiektu ferromagnetycznego. Demagnetyzacja polega na umieszczeniu obiektu w wytworzonym w układzie zewnętrznym polu magnetycznym o określonych właściwościach. Jeżeli obiekt ferromagnetyczny posiada duże rozmiary, wówczas jego demagnetyzacja jest problemem...
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Nanometer structural columns and frustration of magnetic ordering in Nb12O29
PublikacjaDyskutowana jest synteza i właściwości magnetyczne tlenku niobu Nb12O29. Polimorfizm Nb12O29 przejawia się występowaniem dwóch faz: jednoskośnej i ortorombowej. Pomiar podatności magnetycznej pokazuje, że faza jednoskośna wykazuje antyferromagnetyczne przejście ok. 12K.