More on the Flux-Line System

2005 ◽  
pp. 199-246
Keyword(s):  
Flux Line ◽  
Line System

DEPINNING TRANSITION IN FLUX-LINE SYSTEM OF TYPE-II SUPERCONDUCTORS

2005 ◽  
Vol 19 (01n03) ◽  
pp. 455-457 ◽  
Author(s):  
MENG-BO LUO ◽  
XIAO HU
Keyword(s):  
Flux Line ◽  
Sudden Increase ◽  
Zero Temperature ◽  
Force Curve ◽  
Flow Paths ◽  
Line System ◽  
Type Ii Superconductors ◽  
Flux Lines ◽  
Large Fluctuations ◽  
Bragg Glass

Zero temperature velocity-force curve of a flux-line system driven by Lorentz force in the presence of quenched random point-like disorders is simulated. The velocity shows a sudden increase at the depinning force Fc for both systems with Bragg glass (BG) annealed ground state and vortex glass (VG) one. At driving force slightly above Fc all flux lines move forward incoherently with large fluctuations in velocity as well as in the transverse direction, resulting in winding flow paths and no channel.

Structure and Freezing of a Disordered Flux Line System

2002 ◽  
Vol 75 (4-5) ◽  
pp. 477-486 ◽  
Author(s):  
G.I. Menon
Keyword(s):  
Flux Line ◽  
Line System

scholarly journals Suppression of the melting line in a weakly disordered flux-line system

2012 ◽  
Vol 85 (6) ◽  
Author(s):  
Gautam I. Menon ◽  
G. Ravikumar ◽  
M. J. Higgins ◽  
S. Bhattacharya
Keyword(s):  
Flux Line ◽  
Melting Line ◽  
Line System

Organization of flux line system and voltage oscillations in superconducting MgB2

2011 ◽  
Vol 110 (11) ◽  
pp. 113917 ◽  
Author(s):  
A. Kiliç ◽  
M. Olutaş ◽  
K. Kiliç ◽  
A. Altinkok
Keyword(s):  
Flux Line ◽  
Line System

Ultrastructure of superficial neuromasts in the mottled sculpin, Cottus bairdi

1989 ◽  
Vol 47 ◽  
pp. 958-959
Author(s):  
W.R. Jones ◽  
S. Coombs ◽  
J. Janssen
Keyword(s):  
Hair Cells ◽  
Lateral Line System ◽  
Electron Microscopic ◽  
Line System ◽  
Dense Cores ◽  
Sensory Hair Cells ◽  
Cytoplasmic Vesicles ◽  
Cottus Bairdi ◽  
Mottled Sculpin ◽  
Upper Third

The lateral line system of the mottled sculpin, like that of most bony fish, has both canal (CNM) and superficial (SNM) sensory end organs, neuromasts, which are distributed on the head and trunk in discrete, readily identifiable groupings (Fig. 1). CNM and SNM differ grossly in location and in overall size and shape. The former are located in subdermal canals and are larger and asymmetric in shape, The latter are located directly on the surface of the skin and are much smaller and more symmetrical It has been suggested that the two may differ at a more fundamental level in such functionally related parameters as extent of myelination of innervating fibers and the absence of efferent innervation in SNM. The present study addresses the validity of these last two features as distinguishing criteria by examining the structure of those SNM populations indicated in Fig. 1 at both the light and electron microscopic levels.All of the populations of SNM examined conform in general to previously published descriptions, consisting of a neuroepithelium composed of sensory hair cells, support cells and mantle cells, Several significant differences from these accounts have, however, emerged. Firstly, the structural composition of the innervating fibers is heterogeneous with respect to the extent of myelination. All SNM groups, with the possible exception of the TRrs and CFLs, possess both myelinated and unmyelinated fibers within the neuroepithelium proper (Fig. 2), just as do CNM. The extent of myelina- tion is quite variable, with some fibers sheath terminating just before crossing the neuroepithelial basal lamina, some just after and a few retaining their myelination all the way to the base of the hair cells in the upper third of the neuroepithelium. Secondly, all SNMs possess fibers that may, on the basis of ultrastructural criteria, be identified as efferent. Such fibers contained numerous cytoplasmic vesicles, both clear and with dense cores. In regions where such fibers closely apposed hair cells, subsynaptic cisternae were observed in the hair cell (Fig. 3).

Real-time observation of vortex lattices in a superconductor

1993 ◽  
Vol 51 ◽  
pp. 1050-1051
Author(s):  
K. Harada ◽  
T. Matsuda ◽  
J.E. Bonevich ◽  
M. Igarashi ◽  
S. Kondo ◽  
...  
Keyword(s):  
Real Time ◽  
Flux Line ◽  
Electron Holography ◽  
Lorentz Microscopy ◽  
Vortex Lattices ◽  
Flux Lines ◽  
Magnetic Flux Lines ◽  
Time Observation ◽  
Thin Superconductor ◽  
Real Time Observation

Previous observations of magnetic flux-lines (vortex lattices) in superconductors, such as the field distribution of a flux-line, and flux-line dynamics activated by heat and current, have employed the high spatial resolution and magnetic sensitivity of electron holography. And recently, the 2-D static distribution of vortices was also observed by this technique. However, real-time observations of the vortex lattice, in spite of scientific and technological interest, have not been possible due to experimental difficulties. Here, we report the real-time observation of vortex lattices in a thin superconductor, by means of Lorentz microscopy using a 300 kV field emission electron microscope. This technique allows us to observe the dynamic motion of individual vortices and record the events on a VTR system.The experimental arrangement is shown in Fig. 1. A Nb thin film for transmission observation was prepared by chemical etching. The grain size of the film was increased by annealing, and single crystals were observed with a thickness of 50∼90 nm.

On the influence of specimen thickness in TEM images of super-conducting vortices

1996 ◽  
Vol 54 ◽  
pp. 724-725
Author(s):  
J. Bonevich ◽  
D. Capacci ◽  
G. Pozzi ◽  
K. Harada ◽  
H. Kasai ◽  
...  
Keyword(s):  
Flux Line ◽  
Analytical Form ◽  
Realistic Model ◽  
Electron Holography ◽  
Specimen Thickness ◽  
Flux Tubes ◽  
Analytical Expression ◽  
Flux Lines ◽  
Normal Core ◽  
Two Parameters

The successful observation of superconducting flux lines (fluxons) in thin specimens both in conventional and high Tc superconductors by means of Lorentz and electron holography methods has presented several problems concerning the interpretation of the experimental results. The first approach has been to model the fluxon as a bundle of flux tubes perpendicular to the specimen surface (for which the electron optical phase shift has been found in analytical form) with a magnetic flux distribution given by the London model, which corresponds to a flux line having an infinitely small normal core. In addition to being described by an analytical expression, this model has the advantage that a single parameter, the London penetration depth, completely characterizes the superconducting fluxon. The obtained results have shown that the most relevant features of the experimental data are well interpreted by this model. However, Clem has proposed another more realistic model for the fluxon core that removes the unphysical limitation of the infinitely small normal core and has the advantage of being described by an analytical expression depending on two parameters (the coherence length and the London depth).

Impact of Line System on Assam Politics during the Late Colonial Period

Think India ◽  
2019 ◽  
Vol 22 (3) ◽  
pp. 102-108
Author(s):  
Dr. Fakrul Islam Laskar
Keyword(s):  
Colonial Period ◽  
Line System ◽  
Muslim Politics ◽  
District Administration

The execution of the Line System in Assam in order to restrict the settlements of immigrant from Bengal was one of the important issues that influenced the Assam politics, most particularly the Muslim politics, during the late colonial period. It was first implemented in 1920 in Nowgong district and also in the Barpeta sub-division of Kamrup district. The Bengali speaking immigrants, mostly peasants, resisted against the Line System designed by the district administration and in that they got the support of the Assam Provincial Muslim League. The provincial league under the leadership of Maulana Abdul Hamid Khan Bhasani condemned the Line System and protested against its implementation. The Muslim League organized meetings, demonstrations and hartals throughout the province to get it abolished. The indigenous inhabitants, however, strongly advocated the retention of the Line System and demonstrated their support for the Line System.

SIGN IN Welcome!Log into your account your username your password Forgot your password Privacy policy PASSWORD RECOVERY Recover your password your email Struktol Home New fast measuring method for process optimization of sucrose crystallization New fast measuring method for process optimization of sucrose crystallization

2020 ◽  
pp. 49-52
Author(s):  
Trine Aabo Andersen
Keyword(s):  
Image Analysis ◽  
Process Optimization ◽  
Crystal Size ◽  
Measuring Method ◽  
Sieve Analysis ◽  
Image Analysis System ◽  
Line System ◽  
Non Invasive ◽  
Analysis System ◽  
User Friendly

A new fast measuring method for process optimization of sucrose crystallization using image analysis based on high quality images and algorithms is introduced. With the mobile, non-invasive at-line system all steps of the sucrose crystallization can be measured to determine the crystal size distribution. The image analysis system is easy to operate and is as well an efficient laboratory solution with user-friendly and customized software. In comparison to sieve analysis, image analyses performed with the ParticleTech Solution have been proven to be reliable.

Sign in / Sign up

Export Citation Format

Share Document