'Total entropy' diaporamas de présentation

Experimental results on the fluctuations in two out of equilibrium systems

Firenze, 16 February 2009. Experimental results on the fluctuations in two out of equilibrium systems S. Joubaud , P.Jop, A. Petrossyan and S.C. Laboratoire de Physique, ENS de Lyon, UMR5672 CNRS. Outline. Motivation for experiments.

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Tony Rothman

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4C8

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Special Topics in Text Mining

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Objectives:

AH. Objectives:. Define entropy to quantify the 2nd-law effects. The increase of entropy principle . Calculate the entropy changes Examine isentropic processes Reversible steady-flow work relations. Isentropic efficiencies for steady-flow devices. Intro to Entropy.

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Introduction to Statistical Thermodynamics of Soft and Biological Matter

Introduction to Statistical Thermodynamics of Soft and Biological Matter. Dima Lukatsky FOM Institute for Atomic and Molecular Physics [AMOLF], Amsterdam Email: Lukatsky@amolf.nl. Acknowledgements: Samuel Safran, Weizmann Institute of Science

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ITC (Isothermal Titration Calorimetry)

ITC (Isothermal Titration Calorimetry). ITC. A single experiment sufficient to obtain all of the thermodynamic components Stoichiometry of the interaction (n) Association constant (K a ) & Dissociation constant ( K d ) Enthalpy ( ? H b ) Free energy ( ? G b ) Entropy ( ? S b )

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Students' Ideas About Entropy and the Second Law of Thermodynamics*

Students' Ideas About Entropy and the Second Law of Thermodynamics*. Warren Christensen and David E. Meltzer Iowa State University PERG *Supported in part by NSF grants #DUE-9981140 and #PHY-0406724. Thermodynamics Project.

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Dr Roger Bennett R.A.Bennett@Reading.ac.uk Rm. 23 Xtn. 8559

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Thermodynamic Potentials

Thermodynamic Potentials. Why are thermodynamic potentials useful. Consider U=U(T,V). Complete knowledge of equilibrium properties of a simple thermodynamic System requires in addition. P=P(T,V). equation of state. U=U(T,V) and P=P(T,V). complete knowledge of equilibrium properties.

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Evaluating entropy changes

Evaluating entropy changes. Since entropy is a property, the entropy change between two specified states does not depend on the process (reversible or irreversible) that occurs between the two states.

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ENTROPY

ENTROPY. Second Law is not Conserved. ENTROPY. Second Law is not Conserved Total entropy of the universe is increasing. ? S = ? S SYST + S ENVIR > 0. ENTROPY. Second Law is not Conserved Total entropy of the universe is increasing.

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Warren Christensen and David E. Meltzer Iowa State University PERG

Student understanding of entropy and the second law of thermodynamics in an introductory physics course *. Warren Christensen and David E. Meltzer Iowa State University PERG *Supported in part by NSF grants #DUE-9981140 and #PHY-0406724. Thermodynamics Project.

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Thermodynamics

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Chapter 7: Thermodynamic Driving Forces

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Amy Vanderbilt ~ Vin Taylor ~ Martin Taylor ~ Mark Nixon ~ Jan Terje Bjorke

Information-Theoretic Considerations of Graph/Network Topology. Amy Vanderbilt ~ Vin Taylor ~ Martin Taylor ~ Mark Nixon ~ Jan Terje Bjorke Sven Brueckner ~ Zack Jacobson ~ Jason Moore ~ Rusty Bobrow. Amy K. C. S. Vanderbilt, Ph.D. TITLE.

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Practice questions

Practice questions. Chapters 19 & 20. Practice questions from chapter 19&20 1. For a particular process, q = 20 kJ and w = 15 kJ. Which of the following statements is true? a) Heat flows from the system to the surroundings. b) The system does work on the surroundings. c) ? U = 35 kJ.

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Thermodynamics: Spontaneity, Entropy and Free energy

Thermodynamics: Spontaneity, Entropy and Free energy. Definitions: Spontaneous process : a process that can proceed without any outside intervention. Remember: Kinetics tells us about a rates of a reaction Entropy (S) - a measure of the randomness of a system.

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Entropy

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Entropy

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