1 measurement of magnetic field intensity
báo cáo khoa học: " Histological evaluation of the influence of magnetic field application in autogenous bone grafts in rats" doc
Ngày tải lên :
11/08/2014, 20:20
... influence of magnetic stimulation on tissue repair are hampered by the scarcity of reports in the literature and lack of consensus on the intensity of the magnetic fields to be tested The intensity of ... the need of daily application of an electromagnetic field, long duration of the treatment and the need to connect to a source of electricity during application of the electromagnetic field [12] ... [15] Most of the studies in this field investigate the influence of electromagnetic fields on bone healing pseudoarthrosis or delayed healing [6,8,12] In most of them, the magnetic fields are...
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THE INFLUENCE OF ELECTROMAGNETIC WAVE ON THE RELATIVE MAGNETORESISTANCE IN QUANTUM WELLS WITH PARABOLIC POTENTIAL IN THE PRESENCE OF MAGNETIC FIELD
Ngày tải lên :
31/10/2015, 10:43
... parameters such as : the intensity of electromagnetic waves, the magnetic field B, the frequency of the radiation, the relaxation time of carrier, the temperature and the parameters of the quantum well ... frequency of the acoustic phonon is low so we can skip ω− q in the delta function in the Eq.(5) Considering the distribution of phonons to be symmetric, in the presence of the magnetic field, the ... DISCUSSION In order to clarify the mechanism for the RMR in QWPP in the presence of magnetic field under the influence of electromagnetic wave, in this section, we will evaluate, plot and discuss the RMR...
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DSpace at VNU: On the amplifiction of sound (acoustic phonons) by absorption of laser radiation in cylindrical quantum wires with parabolic potential in the presence of magnetic field
Ngày tải lên :
14/12/2017, 19:52
... tion / 1/( ), z varies with th e intensity of the laser radiation field (A = — ), shows th a t the amplification of sound depends on the intensity of the radiation field w ith order greater than ... the ranges of value of phonon wave vector, laser frequency and tem perature a t which the am plification of sound happens Magnetic field has certain influences on the am plification of sound A ... um of the amplification of sound, a t q = 4.7106m “ l , ÍÌ = 130T H z , T = 100 K Com pare these results w ith quantum wires in the absence of m agnetic field, we realize th at m agnetic field...
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Detection of breast cancer cells using targeted magnetic nanoparticles and ultra-sensitive magnetic field sensors potx
Ngày tải lên :
22/03/2014, 17:20
... order of 100,000 nanoparticles per cell [11,12] A magnetizing pulse of less than second is applied with a set of Helmholtz coils to achieve a uniform magnetizing field over the sample A field of ... to a magnetizing field of approximately 40 gauss for 0.75 seconds followed by a delay of 35 milliseconds and subsequent detection every millisecond of the relaxing magnetic field for 2.2 seconds ... short times to obtain the magnetic field amplitude at each sensor position [6] To solve the electromagnetic inverse problem, we fit the spatial dependence of the magnetic field by modeling the sample...
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báo cáo hóa học: " Topological confinement in an antisymmetric potential in bilayer graphene in the presence of a magnetic field" pptx
Ngày tải lên :
21/06/2014, 02:20
... Panel 4(b) presents the oscillator strength as function of magnetic field for several values of ky The presence of an external magnetic field decreases the oscillator strength at large momentum ... from the continuum of free states It is seen that the spectrum of confined states is very weakly influenced by the magnetic field That is a consequence of the strong confinement of the states in ... function of the magnetic field and the potential parameters I Numerical Results Figure 2(a) shows the spectrum for a potential kink as function of the wavevector along the kink for zero magnetic field...
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báo cáo hóa học: " The investigation of frequency response for the magnetic nanoparticulate assembly induced by time-varied magnetic field" ppt
Ngày tải lên :
21/06/2014, 02:20
... increasing, the magnetic relaxation time of cluster is more and more Page of above the period of external field (The relaxation time is constant while the period of field is the reciprocal of frequency) ... of external field is low enough, the field will be incapable of inducing the assembly of magnetic Figure SEM images of DMSA-coated g-Fe2O3 nanoparticles after solvent drying In the presence of ... alternating magnetic field, the field- treated sample re-showed the amorphous aggregates to some extent, meaning that the alternating magnetic field of the frequency had not induced the assembly of g-Fe2O3...
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Báo cáo hóa học: " Influence of Landau level mixing on the properties of elementary excitations in graphene in strong magnetic field" docx
Ngày tải lên :
22/06/2014, 00:20
... in magnetic field there exists a conserving 2D vector of magnetic momentum, equal in our gauge to P = p1 + p2 − e [H × (r1 − r2 )] 2c (8) and playing the role of a center -of- mass momentum The magnetic ... obtain Hamiltonian of the hole in magnetic field from the electron Hamiltonian (2) by complex conjugation and reversal of the sign of the vector potential A(r2 ) In the representation of sublattices ... pairs of Landau levels, changing the resulting energies of elementary excitations Characteristic energy of Coulomb interaction in magnetic field is e2 /εlH , where ε is a dielectric permittivity of...
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Báo cáo hóa học: " Electron-Spin Precession in Dependence of the Orientation of the External Magnetic Field" docx
Ngày tải lên :
22/06/2014, 00:20
... presence of external bias and magnetic field, and Pr was calculated from the measured data Figure shows the kinetics of Pr, where the variations in the dynamics of Pr with the direction h of the magnetic ... amplitude of the oscillating component also decreases An analysis of the oscillating part of the signal has been performed The result has shown Fig Variation of Pr with the orientation (h) of the magnetic ... dependence of the orientation (h) of the magnetic field The spin precession frequency, amplitude, and decay rate as a function of h are estimated and their dependences on h are discussed The values of...
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Báo cáo hóa học: " Binding Energy of Hydrogen-Like Impurities in Quantum Well Wires of InSb/GaAs in a Magnetic Field" pdf
Ngày tải lên :
22/06/2014, 18:20
... the binding energy of the hydrogen-like impurity increases when the size of the confining potential is of the order or less of than the Bohr radius [23] The binding energy of the hydrogen-like ... hydrogen-like impurity in a QWW of A3B5 semiconductors has been calculated in [24] as a function of the radius of the wire and the location of the impurity with respect to the axis of the wire, using a ... function of the radius of the wire and the location of the impurity with respect to the axis of the wire, using a variational approach It is shown that when wire radius is less than the Bohr radius of...
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báo cáo khoa học: "The permeability of SPION over an artificial three-layer membrane is enhanced by external magnetic field" pptx
Ngày tải lên :
11/08/2014, 00:22
... the absence of an external magnetic field Any external magnetic force exerted on the particle is a translational force directed along the applied field vector and is dependent on the magnetic properties ... vivo heating of magnetic nanoparticles in alternating magnetic field Med Phys 2004, 31(8):2219-2221 Wang J, Zhang K, Zhu Y: Synthesis of SiO2-coated ZnMnFe2O4 nanospheres with improved magnetic properties ... dependent on the magnetic properties of the particle and the surrounding medium, the size and shape of the particles and the product of the magnetic flux density and the field gradient Deafness due to...
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báo cáo khoa học:" Histological analysis of the effects of a static magnetic field on bone healing process in rat femurs" pptx
Ngày tải lên :
11/08/2014, 23:22
... objective of the present study is to contribute to the understanding of processes involved in the response of bone to electromagnetic fields, by evaluation of cortical and trabecular bone neoformation ... by the generation of a magnetic field through buried magnets, which resulted in a constant field with no need for reactivation during the experimental period A 41 G magnetic field was used, significantly ... Distribution of screws and washers, outlining the borders of the surgical bone cavity A distance of 1.3 mm separates the washers over the surgical cavity, corresponding to the area where the magnetic field...
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ANTIFERROMAGNETIC HEISENBERG SPIN 1 2 MODEL ON a TRIANGULAR LATTICE IN a MAGNETIC FIELD
Ngày tải lên :
30/10/2015, 20:47
... with nearest neighbouring spins aligning at angles of to each others We choose the z-x plane of a fixed global coordinate system to decribe the magnetic order Supposing that in the classical ground ... classical ground state consists of three sublattice A, B, C with an angle of 120o between the sublattice spin, i.e we have θA = 0; θB = 2π/3 and θC = 4π/3 As the magnetic field is applied along ... monotonically as the external magnetic field B increases The numerical result of Eq (18) show that the quantum correction to the energy is very small At T = as the magnetic fields B increases, the...
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MAGNETIC FIELD DEPENDENCE OF MAGNETIC CASIMIR EFFECT
Ngày tải lên :
30/10/2015, 20:53
... always that magnetic permeability of ferromagnetic plates is equal to unity So, for two similar plates made of ferromagnetic metal the influence of magnetic properties on the magnitude of the Casimir ... energy is positive for the case of D = 100 nm III.2 Dependence of the Casimir force on direction of magnetic field To study the influence of the direction on the magnetic field on the Casimir effect, ... change of sign happens, we present in Fig.4a, MAGNETIC FIELD DEPENDENCE OF MAGNETIC CASIMIR EFFECT 287 Fig Magnetic Casimir energy between the plates as a function of separation distances of plates...
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THE ACOUSTOMAGNETOELECTRIC CURRENT OF a RECT ANGULAR QUANTUM WIRE WITH AN INFINITE POTENTIAL IN THE PRESENCE OF AN EXTERNAL MAGNETIC FIELD
Ngày tải lên :
30/10/2015, 20:58
... mass of free electron In the figure 1, we show the dependence of the AME current on the acoustic wave number qz with the area of cross-sectional a = b = 100˚ A, the intensity of the magnetic field ... first term is the expression of the density of the acoustoelectric current and the second term is the expression of the density of the AME current If the external magnetic field does not exist, then ... longitudinal (relative to the quantum wire axis) component of the quasi-momentum The density of the acoustoelectric current in the presence of magnetic field can be written in the form [15] 116 NGUYEN...
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IMPACT OF THE EXTERNAL MAGNETIC FIELD AND THE CONFINEMENT OF PHONONS ON THE NONLINEAR ABSORPTION COEFFICIENT OF a STRONG ELECTROMAGNETIC WAVE BY CONFINED ELECTRONS IN COMPOSITIONAL SUPERLATTICES
Ngày tải lên :
31/10/2015, 10:40
... case of absence of an external magnetic with a specific of the GaAs − Al0.3 Ga0.7 As compositional superlattices II CALCULATIONS OF THE NONLINEAR ABSORPTION COEFFICIENT OF A STRONG ELECTROMAGNETIC ... case of absence of an external magnetic field, there are only two maxima of nonlinear absorption coefficient Another point is that the absorption coefficient in the presence of an external magnetic ... the density of resonance peaks is greater and the value of absorption coefficients is higher than in case IMPACT OF THE EXTERNAL MAGNETIC FIELD Fig The dependence of α on Ω in case of confined...
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ON THE HALL EFFECT IN PARABOLIC QUANTUM WELLS WITH AN IN PLANE MAGNETIC FIELD IN THE PRESENCE OF a STRONG ELECTROMAGNETIC WAVE (LASER RADIATION)
Ngày tải lên :
31/10/2015, 10:41
... in the presence of a strong EMW (laser field) for two cases: the magnetic field and the electric field of the EMW are perpendicular [11], and are parallel [12] The existence of the odd magnetoresistance ... the magnetic field is oriented in the plane of free motion of electrons (in-plane magnetic field) , the electron - optical phonon interaction has been taken into account and the influence of a ... crossed dc electric field (EF) E1 = (0, 0, E1 ) and magnetic field B = (0, B, 0) in the presence of a strong electromagnetic wave (laser radiation) characterized by electric field E = (E0 sin Ωt,...
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TRANSPORT PROPERTIES OF a QUASI TWO DIMENSIONAL ELECTRON GAS IN a sisige HETEROSTRUCTURE TEMPERATURE AND MAGNETIC FIELD EFFECTS
Ngày tải lên :
31/10/2015, 10:44
... [1] We study the dependence of the mobility and resistivity on the impurity position, temperature and magnetic field Our results maybe of help in checking the validity of Gold’s assumptions experimentally ... author of Ref [1] has supposed two kinds of charged impurities: remote impurity of density Nid located at zi = 490˚ A and interface impurity of density Ni0 located at zi = The values of zi are ... represents the average height of the roughness perpendicular to the Q2DEG and Λ represents the correlation length parameter of the roughness in the plane of the Q2DEG The mobility of the unpolarized and...
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Geophysics lecture chapter 3 the magnetic field of the earth
Ngày tải lên :
04/12/2015, 00:25
... it is CHAPTER THE MAGNETIC FIELD OF THE EARTH 86 difficult to study the conductivity in the deeper part of the lower mantle 3.4 The magnetic induction due to a magnetic dipole Magnetic fields are ... CHAPTER THE MAGNETIC FIELD OF THE EARTH 88 Intermezzo 3.2 Magnetic field induced by electrical current There is no such thing as a magnetic “charge” or “mass” or “monopole” that would make a magnetic ... CHAPTER THE MAGNETIC FIELD OF THE EARTH 98 Table 7.1 of Stacey and eq (3.43) we deduce that the relaxation time of the dipole is about 1000 years; in other words, the current rate of change of the...
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Effect of electro magnetic field
Ngày tải lên :
05/12/2016, 17:04
... Effect of Electro -Magnetic Field (EMF) on Human Health Dr R S Sharma Sr Deputy Director General & Scientist-G Division of RCH Indian Council of Medical Research New Delhi –110 029 Typical sources of ... heated by rotations of polar molecules induced by the electromagnetic field • In the case of a person using a cell phone, most of the heating effect will occur at the surface of the head, causing ... Regulatory Authority of India, 1997-2007 and 2014 Factors Influencing effect of EMF on Human Health i ii iii iv Mass, shape and size of the body, The orientation of the body with the field vectors...
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Hardware of the 3D Surface Magnetic Field Distribution Testing Apparatus (Hardware Instruction)
Ngày tải lên :
21/12/2016, 10:38
... connects to magnetic flux input wire of the testing bus ⑱ I/O Interface of Magnetic Field Intensity Testing: cores and Q9 aviation receptacles for input and output of the magnetic intensity testing ... or internal surface of cylinder testing of magnetic flux density (In cross testing of magnetic flux): About the initial testing point, Z-axis should be set at the bottom of the workpiece, and ... cross testing of magnetic flux density (In the external or internal surface of cylinder testing of magnetic flux): About the initial testing point, Y-axis should be set at the rightward of the workpiece,...
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