Equilibrium States of Mechanically Loaded Saturated and Unsaturated Polymer Gels

2009 ◽  
Vol 99 (1) ◽  
pp. 39-73 ◽  
Author(s):  
Hua Deng ◽  
Thomas J. Pence
Keyword(s):  
Polymer Gels ◽  
Equilibrium States ◽  
Unsaturated Polymer

Freeze-etch TEM of aqueous polymer gel network morphology

1986 ◽  
Vol 44 ◽  
pp. 796-797
Author(s):  
J. A. N. Zasadzinski ◽  
R. K. Prud'homme
Keyword(s):  
Metal Ion ◽  
Polymer Network ◽  
Polymer Gels ◽  
Polymer Gel ◽  
Deformation History ◽  
Crosslinked Polymer ◽  
Aqueous Polymer ◽  
History Of ◽  
Gel Network ◽  
Network Morphology

The rheological and mechanical properties of crosslinked polymer gels arise from the structure of the gel network. In turn, the structure of the gel network results from: thermodynamically determined interactions between the polymer chain segments, the interactions of the crosslinking metal ion with the polymer, and the deformation history of the network. Interpretations of mechanical and rheological measurements on polymer gels invariably begin with a conceptual model of,the microstructure of the gel network derived from polymer kinetic theory. In the present work, we use freeze-etch replication TEM to image the polymer network morphology of titanium crosslinked hydroxypropyl guars in an attempt to directly relate macroscopic phenomena with network structure.

Macroeconomic Equilibrium Theory in the Context of Methodological Problems of Contemporary Economic Science

2008 ◽  
pp. 77-88
Author(s):  
M. Likhachev
Keyword(s):  
Empirical Analysis ◽  
Equilibrium States ◽  
Equilibrium Theory ◽  
Economic Systems ◽  
Economic Science ◽  
The Real ◽  
Theoretical Status ◽  
Methodological Problems ◽  
Real Stability

The article is devoted to the analysis of methodological problems in using the conception of macroeconomic equilibrium in contemporary economics. The author considers theoretical status and relevance of equilibrium conception and discusses different areas and limits of applicability of the equilibrium theory. Special attention is paid to different epistemological criteria for this theory taking into account both empirical analysis of the real stability of economic systems and the problem of unobservability of equilibrium states.

Fulfillment of Arbitrary Movement Transfer Control between Equilibrium States for a Double Pendulum Robot

2011 ◽  
Vol 36 (12) ◽  
pp. 1720-1731 ◽  
Author(s):  
Zu-Shu LI ◽  
Yuan-Hong DAN ◽  
Xiao-Chuan ZHANG ◽  
Lin XIAO ◽  
Zhi TAN
Keyword(s):  
Equilibrium States ◽  
Double Pendulum

Progress of polymer gels for conformance control in oilfield

2021 ◽  
Vol 289 ◽  
pp. 102363
Author(s):  
Wanli Kang ◽  
Xin Kang ◽  
Zeeshan Ali Lashari ◽  
Zhe Li ◽  
Bobo Zhou ◽  
...  
Keyword(s):  
Polymer Gels ◽  
Conformance Control

Timing Matters

2021 ◽  
Vol 9 (2) ◽  
pp. 1-22
Author(s):  
Shuchi Chawla ◽  
Joseph (Seffi) Naor ◽  
Debmalya Panigrahi ◽  
Mohit Singh ◽  
Seeun William Umboh
Keyword(s):  
Network Design ◽  
Equilibrium States ◽  
Game Dynamics ◽  
Central Controller

This article studies the equilibrium states that can be reached in a network design game via natural game dynamics. First, we show that an arbitrarily interleaved sequence of arrivals and departures of players can lead to a polynomially inefficient solution at equilibrium. This implies that the central controller must have some control over the timing of agent arrivals and departures to ensure efficiency of the system at equilibrium. Indeed, we give a complementary result showing that if the central controller is allowed to restore equilibrium after every set of arrivals/departures via improving moves , then the eventual equilibrium states reached have exponentially better efficiency.

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