Pneumatic punch reversal mechanism

1984 ◽  
Vol 20 (4) ◽  
pp. 283-287
Author(s):  
A. D. Kostylev ◽  
K. K. Tupitsyn ◽  
S. K. Tupitsyn ◽  
V. D. Plavskikh
Keyword(s):  
Pneumatic Punch ◽  
Reversal Mechanism

Domains and domain nucleation in magnetron-sputtered CoCr thin films

1993 ◽  
Vol 51 ◽  
pp. 1046-1047
Author(s):  
B. G. Demczyk
Keyword(s):  
Thin Films ◽  
Domain Structure ◽  
Magnetic Domain ◽  
Domain Size ◽  
Film Plane ◽  
Magnetic Domain Structure ◽  
Perpendicular Magnetization ◽  
Columnar Grains ◽  
Reversal Mechanism ◽  
Lorentz Transmission Electron Microscopy

CoCr thin films have been of interest for a number of years due to their strong perpendicular anisotropy, favoring magnetization normal to the film plane. The microstructure and magnetic properties of CoCr films prepared by both rf and magnetron sputtering have been examined in detail. By comparison, however, relatively few systematic studies of the magnetic domain structure and its relation to the observed film microstructure have been reported. In addition, questions still remain as to the operative magnetization reversal mechanism in different film thickness regimes. In this work, the magnetic domain structure in magnetron sputtered Co-22 at.%Cr thin films of known microstructure were examined by Lorentz transmission electron microscopy. Additionally, domain nucleation studies were undertaken via in-situ heating experiments.It was found that the 50 nm thick films, which are comprised of columnar grains, display a “dot” type domain configuration (Figure 1d), characteristic of a perpendicular magnetization. The domain size was found to be on the order of a few structural columns in diameter.

Role of the Cilia Membrane in Control of Microtubule Sliding

1980 ◽  
Vol 38 ◽  
pp. 612-615
Author(s):  
Edna S. Kaneshiro
Keyword(s):  
Control Mechanism ◽  
Beat Frequency ◽  
Surface Membrane ◽  
Ciliary Membrane ◽  
Ciliary Beating ◽  
Ciliary Reversal ◽  
Voltage Dependent ◽  
Reversal Mechanism ◽  
And Function

It is currently believed that ciliary beating results from microtubule sliding which is restricted in regions to cause bending. Cilia beat can be modified to bring about changes in beat frequency, cessation of beat and reversal in beat direction. In ciliated protozoans these modifications which determine swimming behavior have been shown to be related to intracellular (intraciliary) Ca2+ concentrations. The Ca2+ levels are in turn governed by the surface ciliary membrane which exhibits increased Ca2+ conductance (permeability) in response to depolarization. Mutants with altered behaviors have been isolated. Pawn mutants fail to exhibit reversal of the effective stroke of ciliary beat and therefore cannot swim backward. They lack the increased inward Ca2+ current in response to depolarizing stimuli. Both normal and pawn Paramecium made leaky to Ca2+ by Triton extrac¬tion of the surface membrane exhibit backward swimming only in reactivating solutions containing greater than IO-6 M Ca2+ Thus in pawns the ciliary reversal mechanism itself is left operational and only the control mechanism at the membrane is affected. The topographic location of voltage-dependent Ca2+ channels has been identified as a component of the ciliary mem¬brane since the inward Ca2+ conductance response is eliminated by deciliation and the return of the response occurs during cilia regeneration. Since the ciliary membrane has been impli¬cated in the control of Ca2+ levels in the cilium and therefore is the site of at least one kind of control of microtubule sliding, we have focused our attention on understanding the structure and function of the membrane.

Structure and magnetization reversal mechanism in L10 FePt films with perpendicular magnetic anisotropy

2012 ◽  
Vol 520 (17) ◽  
pp. 5746-5751 ◽  
Author(s):  
S.J. Zhang ◽  
Jian-Guo Zheng ◽  
Z. Shi ◽  
S.M. Zhou ◽  
L. Sun ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetization Reversal ◽  
Perpendicular Magnetic Anisotropy ◽  
Reversal Mechanism

Working cycle of a pneumatic punch, taking into account the mobility of the air distribution pipe

1983 ◽  
Vol 19 (6) ◽  
pp. 510-514
Author(s):  
Kh. B. Tkach ◽  
I. I. Reznikov
Keyword(s):  
Pneumatic Punch ◽  
Air Distribution ◽  
Working Cycle

scholarly journals A detailed study of the polarity reversal mechanism in a numerical dynamo model

2004 ◽  
Vol 5 (3) ◽  
Author(s):  
Johannes Wicht ◽  
Peter Olson
Keyword(s):  
Polarity Reversal ◽  
Dynamo Model ◽  
Reversal Mechanism

Reversal Mechanism of Exchange-Biased CoFeB/IrMn Bilayers Observed by Lorentz Electron Microscopy

2009 ◽  
Vol 45 (10) ◽  
pp. 3873-3876 ◽  
Author(s):  
A. Kovacs ◽  
A. Kohn ◽  
J. Dean ◽  
T. Schrefl ◽  
A. Zeltser ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Reversal Mechanism

scholarly journals Magnetization reversal mechanism in .GAMMA.-Fe2O3 thin films.

1991 ◽  
Vol 15 (2) ◽  
pp. 93-96 ◽  
Author(s):  
O. Ishii ◽  
F. Yoshimura ◽  
S. Hirono
Keyword(s):  
Thin Films ◽  
Magnetization Reversal ◽  
Reversal Mechanism

A new circular pneumatic punch for geological exploration well drilling

1985 ◽  
Vol 21 (2) ◽  
pp. 151-154 ◽  
Author(s):  
A. D. Kostylev ◽  
B. B. Danilov ◽  
B. N. Smolyantiskii ◽  
Yu. N. Syryamin ◽  
D. I. Kogan ◽  
...  
Keyword(s):  
Pneumatic Punch ◽  
Geological Exploration ◽  
Well Drilling ◽  
Exploration Well
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