Experimental and numerical investigation of a phase-only control mechanism in the linear intensity regime

2018 ◽  
Vol 148 (21) ◽  
pp. 214310 ◽  
Author(s):  
Elisabeth Brühl ◽  
Tiago Buckup ◽  
Marcus Motzkus
Keyword(s):  
Numerical Investigation ◽  
Control Mechanism ◽  
Intensity Regime ◽  
Linear Intensity

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.

Self-Damping Mechanism in Blood Coagulation

1974 ◽  
Vol 32 (01) ◽  
pp. 057-064 ◽  
Author(s):  
Y Nemerson ◽  
S.A Silverberg ◽  
J Jesty
Keyword(s):  
Tissue Factor ◽  
Blood Coagulation ◽  
Calcium Ions ◽  
Control Mechanism ◽  
Factor Vii ◽  
Damping Factor ◽  
Factor V ◽  
Factor X ◽  
Extrinsic Pathway ◽  
Two Systems

SummaryTwo reactions of the extrinsic pathway of coagulation, the activations of Factor X and prothrombin, have been studied in purified systems and shown to be self-damping. Factor X was activated by the tissue factor - Factor VII complex, and prothrombin by two systems: the coagulant protein of Taipan venom, and the physiological complex of activated Factor X, Factor V, lipid, and calcium ions. In each case the yield of enzyme, activated Factor X or thrombin, is a function of the concentration of activator. These and other observations are considered as a basis for a control mechanism in coagulation.

McDeleuze: What's More Rhizomal than the Big Mac?

2010 ◽  
Vol 4 (1) ◽  
pp. 42-59 ◽  
Author(s):  
Kane X. Faucher
Keyword(s):  
Control Mechanism ◽  
Deleuze And Guattari ◽  
Big Business ◽  
Entire World

The popularity of Deleuze and Guattari is an undeniable precedent in current theoretical exchanges, and it could be stated without much contention that one's theoretical positioning must at some point deal with the salient conceptual offerings of Deleuze and Guattari, especially their double-opus, Anti-Oedipus and A Thousand Plateaus wherein a wealth of critique abounds. However, the significant trends concerning Deleuze and Guattari ‘scholarship’ may be jeopardised by the (ab)use of certain conceptual themes and methods in their work that are distorted and employed by big business looking to secure their legacies of power by means of a control mechanism that looks to subjugate an entire world by means of (to borrow a term from Mihai Spariosu) ‘globalitarianism’. Our aim here will be to use McDonald's Corporation as an example of how the theoretical offerings of Deleuze and Guattari have been indirectly and hastily deployed for corporate ends, how these attempts are counter-Deleuzian, and to answer at least one of Žižek's criticisms against Deleuze.

Numerical Investigation of Discharge Current Path in a Hydrogen MPD Thruster

2016 ◽  
Vol 136 (3) ◽  
pp. 141-146 ◽  
Author(s):  
Akira Kawasaki ◽  
Kenichi Kubota ◽  
Ikkoh Funaki ◽  
Yoshihiro Okuno
Keyword(s):  
Numerical Investigation ◽  
Discharge Current ◽  
Current Path
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