نتایج جستجو برای: axial field

تعداد نتایج: 829038  

2014
Bastien Dolisy Thierry Lubin Smail Mezani Jean Lévêque

In this paper, we propose an analytical method for modeling a permanent magnets axial field magnetic coupling. The three-dimensional model takes into account the radial fringing effects of the coupler. The analytical solution requires resolving the Laplace equation in low permeability subdomains. The magnetic field calculation allows the determination of global quantities like axial force and t...

Journal: :Physical review letters 2009
P S Salter G Carbone E J Botcherby T Wilson S J Elston E P Raynes

We introduce a novel imaging technique adopting remote focusing for resolving the axial dynamics in the director field for liquid crystals. The high axial time resolution of our approach is demonstrated by imaging directly the evolution of the director field for an initially splayed nematic layer subject to a sudden voltage pulse. Images of the switching dynamics are presented, revealing transi...

2016
Xusan Yang Hao Xie Eric Alonas Yujia Liu Xuanze Chen Philip J Santangelo Qiushi Ren Peng Xi Dayong Jin

Axial excitation confinement beyond the diffraction limit is crucial to the development of next-generation, super-resolution microscopy. STimulated Emission Depletion (STED) nanoscopy offers lateral super-resolution using a donut-beam depletion, but its axial resolution is still over 500 nm. Total internal reflection fluorescence microscopy is widely used for single-molecule localization, but i...

2005
S. Elborai

We report flow instabilities with simultaneous, in-plane-rotating and dc-axial uniform magnetic fields. In uniform dc-axial magnetic fields, a ferrofluid drop in a Hele-Shaw cell with an ,1.0-mm gap forms the familiar labyrinth pattern. With subsequent application of an ,100-G rms in-plane, 20–40-Hz rotating uniform magnetic field, smooth spirals form. If the rotating magnetic field is applied ...

Journal: :مدیریت دولتی 0
محمدرضا پورعابدی استادیار مدیریت منابع انسانی، جهاد دانشگاهی، تهران، ایران

. by using theorical sampling and using sampling techniques targeted (judgment) sampling and application of snowball (chain) and purposive sampling was carried out on the basis of 16 interviews with administrators, faculty and academic experts of acecr which were experienced in the field of exploitation and exploration and are expert in both fields. analysis of interview data in the process of ...

Journal: :J. Applied Mathematics 2008
Kh. S. Mekheimer

We carry out the effect of the induced magnetic field on peristaltic transport of an incompressible conducting micropolar fluid in a symmetric channel. The flow analysis has been developed for low Reynolds number and long wavelength approximation. Exact solutions have been established for the axial velocity, microrotation component, stream function, magnetic-force function, axialinduced magneti...

Journal: :Optics communications 2008
M E Durst G Zhu C Xu

Simultaneous spatial and temporal focusing (SSTF), when combined with nonlinear microscopy, can improve the axial excitation confinement of wide-field and line-scanning imaging. Because two-photon excited fluorescence depends inversely on the pulse width of the excitation beam, SSTF decreases the background excitation of the sample outside of the focal volume by broadening the pulse width every...

Journal: :Physical review letters 2013
Xu-Guang Huang Jinfeng Liao

We study a relativistic plasma containing charged chiral fermions in an external electric field. We show that with the presence of both vector and axial charge densities, the electric field can induce an axial current along its direction and thus cause chirality separation. We call it the chiral electric separation effect (CESE). On a very general basis, we argue that the strength of CESE is pr...

A. R. Azimian,

In this paper it is attempted to investigate the behavior of an inviscid flow in the meridional plane of an axial flow compressor. For this purpose the 3-D unsteady Euler equations in cylindrical coordinate are averaged in tangential direction. Therefore, the equations are reduced to a 2-D system. By averaging the tangential component of momentum equation, a blade force will result. Axial and r...

2014
W. Hourani E. Martinez P. Periwal G. Patriarche F. Bassani J. M. Fabbri T. Baron

Si/Si1-xGex axial heterostructured nanowires (hNW) are under investigation for downscaling of metaloxide-semiconductor field-effect transistors (MOSFETs). New architectures based on vertically aligned nanowires tunnel-FETs are promising candidates for reduced power dissipation and low voltage operation [1]. The axial growth of lattice mismatched heterostructures would allow band-gap engineering...

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