density gauss apos s law and divergence
CHAPTER 8: THE STEADY MAGNETIC FIELDAt pps
Ngày tải lên :
07/08/2014, 20:23
... foolish answers The Biot-Savart law may also be expressed in terms of distributed sources, such as current density J and surface current density K Surface current flows in a sheet of vanishingly small ... helps us solve problems Á more easily is known as AmpeÁre 's circuital law, sometimes called Ampere 's work law This law may be derived from the Biot-Savart law, and the derivation Á is accomplished ... that the same problems could be solved much more easily by using Gauss' s law whenever a high degree of symmetry was present Again, an analogous procedure exists in magnetic fields Here, the law that...
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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
... discussed The values of gk and g\ were also estimated The mechanisms responsible for the observed effects were discussed briefly 591 References M Ziese, M.J Thornton (eds.), Spin Electronics, ... are estimated and their dependences on h are discussed The values of the longitudinal and transverse components of the electron g-factor are also estimated Experimental Investigated samples were ... excitation Results and Discussion The PL was measured in the right (r?) and left (r-) circularly polarizations under r? light excitation in the presence of external bias and magnetic field, and Pr was calculated...
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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
... phonons, in this section, we will evaluate, plot and discuss the expression of the NAC for the case of the GaAs − Al0.3 Ga0.7 As compositional superlattices We use some results to make the comparision ... PHONONS It is well known that in the compositional superlattices, the motion of electrons is restricted in one dimension, so that they can flow freely in two dimensions In this article, we assume ... that the quantization direction is in z direction and only consider intersubband transitions (n = n ) and intrasubband transitions (n=n’) We consider a compositional superlattice with a magnetic...
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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
... difficulties, the stainless steel washers were not protected against corrosion, differing thus from those used by Lemons and Natiella [17] Martensitic stainless steel relates to the classification described ... deposition Areas limited by the washers showed fibrous tissue associated to osteoclastic activity Medullary space was extensively invaded by bone trabecules and vascularized hematopoietic tissue (Figure ... (Physics Institute, UFRGS), Marcel Fasolo de Paris (Oral and Maxillofacial Surgeon, Hospital Moinhos de Vento) and Isabel Regina Pucci (Manager, Instituto Puricelli & Associados) This study is...
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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
... electron gas, the expression only obtained if the condition in Eq.(9) is satisfied III NUMERICAL RESULTS AND DISCUSSION In the paper, we consider a GaAs quantum wire The parameters used in the ... is given |Gpz ,qz |2 = |Λ| 2ρωqz Where Λ is the deformation potential constant and ρ is the crystal density of the RQW In Eq.(5), the first term is the expression of the density of the acoustoelectric ... [10] and was observed experimentally in bismuth [11] In past times, there are more and more interests in studying and discovering this effect in a bulk monopolar semiconductor [12], in a bulk semiconductor...
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Báo cáo toán học: " A Combinatorial Derivation of the PASEP Stationary Stat" pps
Ngày tải lên :
07/08/2014, 13:21
... normalisations and in section we describe path model interpretations of the stationary states and normalisations In section proofs of the propositions and theorems stated in the earlier sections are ... other cases It is common practise to, without loss of generality, set η = Unless otherwise indicated, we follow this practise in this paper See an example of the state space and transitions for ... k ≤ l and X = X The first assertion is true since the first • in X is in position i1 + 1, so both x1 = ◦ and xi1 = ◦ and removing them give the same result The other assertions are showed similarly...
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The intellectual structure and substance of the knowledge utilization field: A longitudinal author co-citation analysis, 1945 to 2004 pdf
Ngày tải lên :
11/08/2014, 05:21
... co-citation entries in the form of a visual map We assessed the goodness-of-fit of each of the co-citation maps produced using Kruskal 's Stress measure [51] Values for Kruskal 's Stress [49] measure were ... truly occurs we need to study demand characteristics, such as users' ability and willingness to seek and process innovations Knowledge utilization Carol Weiss was most cited for her works "Knowledge ... Indicators and Analysis of Research Systems: Methods and Examples Paris: OECD; 1997 Bibliometrics as a Research Field: A Course on Theory and Application of Bibliometric Indicators: Course Handouts...
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báo cáo khoa học: " The intellectual structure and substance of the knowledge utilization field: A longitudinal author co-citation analysis, 1945 to 2004" potx
Ngày tải lên :
11/08/2014, 16:21
... co-citation entries in the form of a visual map We assessed the goodness-of-fit of each of the co-citation maps produced using Kruskal 's Stress measure [51] Values for Kruskal 's Stress [49] measure were ... truly occurs we need to study demand characteristics, such as users' ability and willingness to seek and process innovations Knowledge utilization Carol Weiss was most cited for her works "Knowledge ... Indicators and Analysis of Research Systems: Methods and Examples Paris: OECD; 1997 Bibliometrics as a Research Field: A Course on Theory and Application of Bibliometric Indicators: Course Handouts...
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on the galois groups of the 2-class field towers of some imaginary quadratic fields
Ngày tải lên :
13/11/2014, 09:08
... classes 233 through 272 form the subset of S of subgroup classes of index at most A sequence of commands in MAGMA which tests whether a representative subgroup is abelian shows that class 235 is ... L8 This gives him sets of subgroups He applies his procedure using all sets and obtains two candidates for Gal(k nr,2 /k) Bush √ finds that k = Q( −1595) has degree subextensions with subfield ... is surjection satisfying the necessary requirements Bush iterates his method and the sequence of lists terminates to give 81 candidates for G To further isolate G, Bush incorporates two more subgroups...
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Experimental determination of the nuclear magnetic octupole moment of 137ba
Ngày tải lên :
09/09/2015, 11:20
... hyperfine intervals is discussed in Section 3.7 In the final Section 3.8 the imaging system is explained 3.1 Vacuum system Ultra high vacuum is necessary in atomic physics experiments to isolate the ... and a phase term φ(t) associated with the phase fluctuations of the field In the specific case of the rf transitions, phase noise is not an issue when using modern oscillators In the case of the ... single laser, so the two arms are phase coherent For transitions between the 6S1 /2 and 5D levels, this is not the case and phase jitter arises from inherent incoherence between the phases of the...
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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
... Figure shows the oscillator strength and the corresponding transition energy ΔE for the topological states of a single kink profile The results are presented as function of ky (panels (a,c)) and ... free states at zero magnetic field is replaced by a set of Landau levels for ε >ub The spinor components and probability densities associated with the points indicated by arrows in Figure 5(a) and ... units) dispersion relations Figure shows plots of the y-component of the current density as function of x for the states labelled (1) to (6) in panels (a) and (b) of Figure For ky = the results...
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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
... assembly and widen the technological means for the formation of colloidal patterns Methods The synthesis process of bare g-Fe2O3 nanoparticles and DMSA-coated g-Fe2O3 nanoparticles The synthesis ... magnetic repulsive interaction, the size of clusters should be smaller than the original size of aggregates in the suspension This inference is in accordance with the experimental results The schematic ... monodisperse magnetic iron oxide nanoparticles via surface double-exchange with DMSA Colloids and Surfaces A 2008, 316:210-216 Bishop KJM, Wilmer CE, Soh S, Grzybowski BA: Nanoscale forces and...
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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
... author: lozovik@isan.troitsk.ru Email address: AAS: aasokolik@yandex.ru Abstract Massless Dirac electrons in graphene fill Landau levels with energies scaled as square roots of their numbers Coulomb ... observe avoided crossings between dispersions of different magnetoexcitons, and even reversal of a sign of magnetoexciton effective masses (see Figure 1b,c,e,f) Also we see that the high levels ... competing interests Acknowledgments The study was supported by grants of Russian Foundation for Basic Research and by the grant of the President of Russian Federation for Young Scientists MK-5288.2011.2...
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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
... consideration MDCK cells were first seeded on the serosal side of the SIS membrane at a seeding density of 4.4 × 105 cells/cm2 Swiss 3T3 fibroblasts were seeded on the mucosal side of the SIS ... Urothelial cells between passages and 12 and 3T3 cells between passages and 32 Cells were cultured in 100 mm2 culture dishes in DMEM supplemented with 10% FBS for MDCK and 3T3 cells and in KSFM supplemented ... flux density was measured using a Gauss meter Model 5080 (SYPRIS, OrlandoFl) Sigma plot was used for all statistical calculations Histology After 60 minutes of magnetic exposure, the cells were...
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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
... with titanium screws A magnetic field was established in animals of the test groups by placing up the north and south poles of the distal and proximal washers Few studies have assessed the influence ... analyzed on days 15, 45 and 60 after beginning of the experiment The metal devices consisted of commercially pure martensitic stainless steel washers and titanium screws The screws measured 1.0 mm ... hematoxylin and eosin stain (HE) for histological analysis Results On day 15, histological analysis of control samples showed bone neoformation, beginning on the endosteum and surrounding the surgical...
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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
... quantum well and present briefly the basic formulas for the calculation Numerical results and discussion are given in Sec III Finally, remarks and conclusions are shown briefly in Sec IV II HALL ... frequency ωz increases, the value of ωc (the magnetic field) satisfying this condition decreases So the peak shifts to the left (the region of small magnetic field) as ωz increases as we see in the figure ... Russian] V.L Malevich, E.M Epshtein, Fiz Tverd Tela [Sov Phys Solid State] 18 (1976) 1286 [in Russian] V.L Malevich, E.M Epshtein, Izv Vyssh Uchebn Zavad Fiz [Sov Phys J.] (1976) 121 [in Russian]...
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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
... electromagnetic wave, in this section, we will evaluate, plot and discuss the RMR for a specific quantum well : AlAs/AlGaAs The parameters used in the calculations are as follows : εF = 50meV , χ0 = ... EMWF is low enough, the RMR has a sharp drop It remains stable when the EMWF reaches a certain value The RMR is also gets the different values when the magnetic field changes These dependences are ... 12.9, χ∞ = 10.9, m = 0.067m0 with m0 is the mass of a free electron For the sake of simplicity, we also choose N = 0, N = 1, τ = 10−12 s Figure shows the RMR as a function of the electromagnetic...
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Geophysics lecture chapter 3 the magnetic field of the earth
Ngày tải lên :
04/12/2015, 00:25
... magnetic and gravity fields are both potential fields, the fields are the gradient of some potential V , and Laplace s and Poisson s equations apply • For the description and analysis of these fields, spherical ... and ϕm as above) Then we can apply the cosine rule for D: cos θp = cos θm cos s + sin θm sin s cos D (3.83) θp = arccos{cos θm cos s + sin θm sin s cos D} (3.84) < θ < 180◦ (3.85) and with ... of rocks less than Ma old Based on the first time scales one defined epochs as relatively long periods of time of mostly one polarity, and events as relatively short excursions or reversals of the...
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