scholarly journals Variational Models of Network Formation and Ion Transport: Applications to Perfluorosulfonate Ionomer Membranes

Polymers ◽  
2012 ◽  
Vol 4 (1) ◽  
pp. 630-655 ◽  
Author(s):  
Nir Gavish ◽  
Jaylan Jones ◽  
Zhengfu Xu ◽  
Andrew Christlieb ◽  
Keith Promislow
Keyword(s):  
Ion Transport ◽  
Network Formation ◽  
Variational Models ◽  
Ionomer Membranes

Variational Models of Pore Networks in Ionomer Membranes: The Role of Electrostatics

2013 ◽  
Vol 50 (2) ◽  
pp. 161-173 ◽  
Author(s):  
K. Promislow ◽  
J. Jones ◽  
Z. Xu ◽  
N. Gavish ◽  
A. Christlieb
Keyword(s):  
Variational Models ◽  
Pore Networks ◽  
Ionomer Membranes

Characterization of acetylcholine-induced ion transport in human duodenum

2001 ◽  
Vol 120 (5) ◽  
pp. A532-A532
Author(s):  
R LARSEN ◽  
M HANSEN ◽  
N BINSLEV ◽  
A MERTZNIELSEN
Keyword(s):  
Ion Transport

Overview of Particle and Heavy Ion Transport Code System PHITS

2014 ◽  
Author(s):  
Tatsuhiko Sato ◽  
Koji Niita ◽  
Norihiro Matsuda ◽  
Shintaro Hashimoto ◽  
Yosuke Iwamoto ◽  
...  
Keyword(s):  
Ion Transport ◽  
Heavy Ion ◽  
Code System ◽  
Transport Code

Nasal epithelia cultures of patients with chronic rhinosinusitis show altered ion transport capacities

Pneumologie ◽  
2016 ◽  
Vol 70 (07) ◽  
Author(s):  
JJ Salomon ◽  
T Albrecht ◽  
H Scheuermann ◽  
I Baumann ◽  
MA Mall
Keyword(s):  
Ion Transport ◽  
Chronic Rhinosinusitis

Platelet Microtubules in Clot Structure Formation and Contractile Force Generation: Investigation of a Controversy

1986 ◽  
Vol 56 (01) ◽  
pp. 023-027 ◽  
Author(s):  
C J Jen ◽  
L V McIntire
Keyword(s):  
Network Formation ◽  
Contractile Force ◽  
Second Phase ◽  
Clot Retraction ◽  
Forming Process ◽  
Microtubule Organization ◽  
Physiological Processes ◽  
Fibrin Network ◽  
Two Parameters

SummaryWhether platelet microtubules are involved in clot retraction/ contraction has been controversial. To address this question we have simultaneously measured two clotting parameters, clot structural rigidity and isometric contractile force, using a rheological technique. For recalcified PRP clots these two parameters began rising together at about 15 min after CaCl2 addition. In the concentration range affecting microtubule organization in platelets, colchicine, vinca alkaloids and taxol demonstrated insignificant effects on both clotting parameters of a recalcified PRP clot. For PRP clots induced by adding small amounts of exogenous thrombin, the kinetic curves of clot rigidity were biphasic and without a lag time. The first phase corresponded to a platelet-independent network forming process, while the second phase corresponded to a platelet-dependent process. These PRP clots began generating contractile force at the onset of the second phase. For both rigidity and force parameters, only the second phase of clotting kinetics was retarded by microtubule affecting reagents. When PRP samples were clotted by adding a mixture of CaCl2 and thrombin, the second phase clotting was accelerated and became superimposed on the first phase. The inhibitory effects of micro tubule affecting reagents became less pronounced. Thrombin clotting of a two-component system (washed platelets/ purified fibrinogen) was also biphasic, with the second phase being microtubule-dependent. In conclusion, platelet microtubules are important in PRP clotted with low concentrations of thrombin, during which fibrin network formation precedes platelet-fibrin interactions. On the other hand they are unimportant if a PRP clot is induced by recalcification, during which the fibrin network is constructed in the presence of platelet-fibrin interactions. The latter is likely to be more analogous to physiological processes in vivo.

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