Magnetic Fields

General physics 2: Electricity & Magnetism products about Electric Charge and Field (Electric Charges; Coulomb’s Law; Electric Fields; Electric Field of a Continuous Charge Distribution; Motion of Charged Particles in a Uniform Electric Field).

38p tuanvipnk 14-03-2015 76 5   Download

Lecture Physics A2: Magnetic fields - PhD. Pham Tan Thi present the content analysis model particle in a magnetic field, magnetic field lines, magnetic force, an electron moving in a magnetic field, representations of magnetic field lines perpendicular to the page,...

58p xusong 21-07-2021 14 2   Download

This thesis derives closed form equations to describe electromagnetic device characteristics for a toroid, solenoid and a case study induction machine. By considering stored magnetic field energy, this approach allows the relationship between electrical, magnetic and kinetic energy to be quantified and analyzed in ways that allows improved accuracy compared with conventional magnetic circuit modeling methods. This thesis also provides insights into how geometric parameters impact energy transfer and operational characteristics of electromagnetic devices.

112p runthenight04 02-02-2023 18 2   Download

This paper proposes a control strategy of open winding permanent magnet synchronous motor (OW PMSM) in field weakening modes. There are two inverters. One of them connected to the traction battery.

8p lucastanguyen 01-06-2020 13 3   Download

Influence of substitution of 3d metals for Mn on properties of La0.67Ca0.33Mn0.9 TM0.1O3 (TM = Fe, Co, Ni) compounds was studied. Ferromagnetic – paramagnetic and metals – insulator transitions were significantly affected by Mn-site substitution. However, no observable difference was found in their crystal structure from X-ray diffraction analysis. At room temperature the structure characterization of these compounds gave the single phase and structure is the distortion orthorhombic cell with space group symmetry Pnma.

12p 12120609 01-06-2020 15 2   Download

Purposes of the thesis: Propose physical mechanism to investigate metamaterial absorber operating in THz region. Design, simulation, and characterizations of MA in THz region. Optimize parameter structure to increase absorption and broaden operating wavelength region, modify operating wavelength by external factors.

27p xacxuoc4321 09-07-2019 34 4   Download

Research targets of the thesis: (i) To thereticallystudy the overall characteristics of MIH and their impacts based on theoretical calculation (ii) To carry out experiments on the influence of alternating magnetic field, particle size and viscosity on specific loss power for CoFe2O4 and MnFe2O4, chosen as representative of respectively high K and low K magnetic nanoparticles; and to compare the experimental behavior with that obtained by theroretical calculations.

23p xacxuoc4321 08-07-2019 56 3   Download

Modeling and simulation of dynamic systems is Pham Huy Hoang Electromotive force (emf) voltage (electromotance): is that which tends to cause current (actual electrons and ions) to flow, is the external work expended per unit of charge to produce an electric potential difference across two open-circuited terminals.

13p 1love123 30-08-2017 58 4   Download

Research objectives: Collect and process the magnetic data from CHAMP satellite and from the magnetic observatories within 6 years (from 2002-2007); study the method to separate magnetic field caused by EEJ from the observed data; identify some parameters of EEJ in all over meridians and study the variation of EEJ in space and time. The variation of EEJ in longitude, latitude and local time.

26p change03 06-05-2016 48 2   Download

This paper introduces a new analytical method for performing the output torque calculations of an interior permanent magnet synchronous motor (IPMSM) including both permanent magnet and reluctance torque components.

5p dunghjt 09-11-2013 56 4   Download

Operation A 3 phase motor self starts due to a rotating magnetic field in the windings If a single phase was applied to one winding, it would simply pulse and produce no torque If we could simply ‘push’ the rotor, it would begin to spin for the same reasons in a 3 phase motor

11p viet82vp 16-08-2012 67 11   Download

 NMR in solids, like solution-state, relies on the behavior of nuclear spin energy levels in a magnetic field. However, the interactions that affect NMR spectra act differently.  In liquids, molecules reorient and diffuse quickly, leading to narrow isotropic resonances.  In solids, the fixed orientation of individual crystallites leads to a range of resonance frequencies for anisotropic interactions.

14p qdung92ct 03-07-2012 84 5   Download

NMR is an experiment in which the resonance frequencies of nuclear magnetic systems are investigated. NMR always employs some form of magnetic field (usually a strong externally applied field B0) NMR is a form of both absorption and emission spectroscopy, in which resonant radiation is absorbed by an ensemble of nuclei in a sample, a process causing detectable emissions via a magnetically induced electromotive force.

20p qdung92ct 03-07-2012 117 10   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Electron States and Light Absorption in Strongly Oblate and Strongly Prolate Ellipsoidal Quantum Dots in Presence of Electrical and Magnetic Fields

8p sting10 07-03-2012 42 5   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Binding Energy of Hydrogen-Like Impurities in Quantum Well Wires of InSb/GaAs in a Magnetic Field

4p sting10 07-03-2012 50 6   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Histological analysis of the effects of a static magnetic field on bone healing process in rat femurs

9p panasonic05 22-12-2011 44 4   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Transmembrane potential induced on the internal organelle by a time-varying magnetic field: a model study

15p panasonic01 12-12-2011 51 5   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: The permeability of SPION over an artificial three-layer membrane is enhanced by external magnetic field

9p toshiba25 08-12-2011 44 4   Download

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Genetic effects of static magnetic fields. Body size increase and lethal mutations induced in populations of Drosophila melanogaster after chronic exposure

0p toshiba20 12-11-2011 58 4   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành y đề tài: Impairment of chondrocyte biosynthetic activity by exposure to 3-tesla high-field magnetic resonance imaging is temporary...

11p thulanh13 14-10-2011 31 3   Download