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Encyclopedia results for Biological thermodynamics

Biological thermodynamics





Encyclopedia results for Biological thermodynamics

  1. Biological thermodynamics

    Biological thermodynamics is a phrase that is sometimes used to refer to bioenergetics , the study of energy transformation in the biological science s. Biological thermodynamics may be defined as the quantitative .... Biological thermodynamics may address the question of whether the benefit associated with any particular ... rather than photosynthesis. The focus of thermodynamics in biology The field of biological thermodynamics is focused on principles of chemical thermodynamics in biology and biochemistry . Principles covered include the first law of thermodynamics , the second law of thermodynamics , Gibbs free energy , statistical thermodynamics , reaction kinetics , and on hypotheses of the origin of life. Presently, biological thermodynamics concerns itself with the study of internal biochemical dynamics .... ref Haynie, Donald T. Biological Thermodynamics. Cambridge Cambridge UP, 2001. Print. ref From the first ... by an increase in the entropy of the universe. ref Haynie, Donald T. Biological Thermodynamics ... of the thermodynamics of enzyme catalyzed reactions journal J Biol Chem volume 279 issue 27 pages ... jbc.X400003200 ref was the first major publication on the thermodynamics of biochemical reactions. In addition ... medicine krebss.htm Hans Krebs 1935 ref Non equilibrium thermodynamics has been applied for explaining how biological organisms can develop from disorder. Ilya Prigogine developed methods for the thermodynamic ... sunlight energy which reaches Earth. The energy transformations in biological communities ... First Law of Thermodynamics The First Law of Thermodynamics is a statement of the conservation of energy ... of Biological and Medical Physics. New York McGraw Hill Book, 1955. Print. ref Second Law of Thermodynamics The Second Law of Thermodynamics is primarily concerned with whether or not a given ... at Equilibrium. Chichester, West Sussex Wiley, 1983. Print. ref Gibbs Free Energy In biological ... in Gibbs Free Energy is the basic principle behind all enzymatic action in biological organisms ...   more details



  1. Gibbs Society of Biological Thermodynamics

    Orphan date April 2010 Infobox Non profit Non profit name Gibbs Society of Biological Thermodynamics Non profit logo Non profit type founded date 1986 tax id registration id founder Gary Ackers, Wayne Bolen, Ernesto Freire, Stan Gill, & Jim Lee location this parameter modifies Headquarters origins key people area served Physical Chemistry , Thermodynamics , Biophysics product mission focus method revenue endowment num volunteers num employees num members subsid owner Non profit slogan homepage official http mljohnson.pharm.virginia.edu gibbs society dissolved footnotes The Gibbs Society of Biological Thermodynamics is composed of scientists involved in the field of Biophysics , with the group meeting annually in the Fall. Recent meetings have been held at the http www.ton.siu.edu Touch of Nature Conference Center in Carbondale, Illinois . Current incarnations have begun with a meet and greet on Saturday night, followed by two and a half days of lectures and two nights of poster sessions. Poster sessions often end with several attendees creating a bonfire at a nearby beach. The last night of the meeting is known for its food, a selection of beef cooked over an open flame, with attendees affectionately calling it the Buffalo Tro . The 24th annual meeting of the Gibbs Society of Biological Thermodynamics will be held http gibbs.biology.lsu.edu from September 25 28, 2010 . The Keynote speaker is http biochemistry.tamu.edu ?ch faculty&sec name&pp pace C. Nick Pace, Texas A&M University . In 2009, the http mljohnson.pharm.virginia.edu gibbs society Ackers.pdf Gary K. Ackers Lecture in Biothermodynamics was instituted, with http www.einstein.yu.edu home faculty profile.asp?id 2584 Michael Brenowitz giving the inaugural lecture. Tim Lohman , Washington University in St. Louis , will be giving the Ackers lecture at the 2010 meeting. Current Officers http www.science.oregonstate.edu ... DEFAULTSORT Gibbs Society Of Biological Thermodynamics Category Biophysics ...   more details



  1. Thermodynamics

    Biological Thermodynamics edition 2 author Donald T. Haynie publisher Cambridge University Press ... , the letters labeled according to the stopping points in Carnot cycle . Thermodynamics Thermodynamics ... and Work thermodynamics work . It defines macroscopic variables such as temperature , entropy , and pressure ... and by what laws they change with time. Thermodynamics does not describe the microscopic constituents of matter, and its laws can be derived from statistical mechanics . Thermodynamics can ... , chemical reactions , transport phenomena , and even black holes . The results of thermodynamics ..., H.C., Abbott, M.M. title Introduction to Chemical Engineering Thermodynamics publisher McGraw Hill year 2005 isbn 0 07 310445 0 oclc 56491111 ref ref cite book author Haynie, Donald, T. title Biological Thermodynamics publisher Cambridge University Press year 2001 isbn 0 521 79549 4 oclc 43993556 ref Thermodynamics is one of the best logically structured branches of physics and has become one of the classical ... content of thermodynamics is contained in its four laws of thermodynamics laws . The first law specifies that energy can be exchanged between physical systems as heat and Work thermodynamics thermodynamic work . ref cite book author Van Ness, H.C. title Understanding Thermodynamics publisher Dover ... Taylor and Francis year 1998 isbn 0 7484 0569 0 oclc 36457809 ref Historically, thermodynamics ... was the first to formulate a concise definition of thermodynamics in 1854 ref name kelvin1854 cite ... of heat to electrical agency. Initially, the thermodynamics of heat engines concerned mainly the thermal ... explicitly concerned with the relation between energy exchanges by heat and work. Chemical thermodynamics ... N. coauthors Randall, Merle title Thermodynamics and the Free Energy of Chemical Substances publisher McGraw Hill Book Co. Inc. year 1923 ref ref name Guggenheim 1933 Guggenheim, E.A. 1933 . Modern Thermodynamics ..., R., translated by D.H. Everett title Chemical Thermodynamics year 1954 publisher Longmans, Green ...   more details



  1. History of thermodynamics

    thermodynamics 1941 Small systems thermodynamics 1960s Biological thermodynamics 1957 Ecosystem ... c. 1970s Geological thermodynamics c. 1970s Biological evolution thermodynamics 1978 Geochemical ... steam engine built by Thomas Savery thermodynamics cTopic History and Culture The history of thermodynamics ... of science in general. Owing to the relevance of thermodynamics in much of science and technology ... , internal combustion engine , cryogenics and electricity generation . The development of thermodynamics ... new directions in probability and statistics see, for example, the timeline of thermodynamics . History See also Timeline of thermodynamics Contributions from ancient and medieval times See also History ... between thermodynamics and statistical mechanics. Ancient thinkers such as Leucippus and Democritus ... to place the subject of thermodynamics on a solid footing. William Thomson, 1st Baron Kelvin William ... which became known as thermochemistry . Phenomenological thermodynamics File Robert Boyle ... s law 1802 Birth of thermodynamics as a modern science At its origins, thermodynamics was the study ... Carnot Sadi Carnot , the father of thermodynamics , who in 1824 published Reflections on the Motive Power of Fire , a discourse on heat, power, and engine efficiency. This marks the start of thermodynamics ... left thumb Sadi Carnot 1796 1832 the father of thermodynamics Most cite Nicolas L onard Sadi Carnot ... as the starting point for thermodynamics as a modern science. Carnot defined motive power to be the expression ... modern day thermodynamics. In 1843, James Joule experimentally found the mechanical equivalent of heat ... Prescott Joule The Discovery of the Mechanical Equivalent of Heat ref The name thermodynamics, however ... William Thomson, 1st Baron Kelvin William Thomson Lord Kelvin coined the term thermodynamics ... and physicist James Clerk Maxwell formulated a new branch of thermodynamics called Statistical Thermodynamics , which functions to analyze large numbers of particles at thermodynamic equilibrium ...   more details



  1. Chemical thermodynamics

    Chemical thermodynamics is the study of the interrelation of heat and thermodynamic work work with chemical ... of thermodynamics . Chemical thermodynamics involves not only laboratory measurements of various ... questions and the spontaneity of processes. The structure of chemical thermodynamics is based on the first two laws of thermodynamics . Starting from the first and second laws of thermodynamics, four ... simple mathematics. This outlines the mathematical framework of chemical thermodynamics. ref name Book1 cite book last Ott first Bevan J. coauthors Boerio Goates, Juliana title Chemical Thermodynamics ... Image Willard Gibbs.jpg right thumb J. Willard Gibbs founder of chemical thermodynamics In 1865 ... of thermodynamics . ref Clausius, R. 1865 . The Mechanical Theory of Heat with its Applications ... laws of thermodynamics could be measured graphically and mathematically to determine both the thermodynamic ... processes, and thus established the foundation of the science of chemical thermodynamics. The first was the 1923 textbook Thermodynamics and the Free Energy of Chemical Substances by Gilbert N. Lewis ... Thermodynamics by the methods of Willard Gibbs written by E. A. Guggenheim . In this manner, Lewis, Randall, and Guggenheim are considered as the founders of modern chemical thermodynamics because of the major contribution of these two books in unifying the application of thermodynamics to chemistry . ref name Book1 Overview The primary objective of chemical thermodynamics is the establishment ... Klotz, I. 1950 . Chemical Thermodynamics. New York Prentice Hall, Inc. ref In this manner, chemical thermodynamics is typically used to predict the energy exchanges that occur in the following processes ... concern in chemical thermodynamics Internal energy U Enthalpy H . Entropy S Gibbs free energy G Most identities in chemical thermodynamics arise from application of the first and second laws of thermodynamics, particularly the Conservation of energy law of conservation of energy , to these state ...   more details



  1. Equilibrium thermodynamics

    thermodynamics cTopic Branches Equilibrium Thermodynamics is the systematic study of transformations of matter and energy in systems as they approach equilibrium. The word equilibrium implies a state of balance. Equilibrium thermodynamics, in origins, derives from analysis of the Carnot cycle . Here, typically a system, as cylinder of gas, is set out of balance via heat input from a combustion combustion reaction . Then, through a series of steps, as the system settles into its final equilibrium state, work is extracted. In an equilibrium state there are no unbalanced thermodynamic potential potentials , or driving forces, within the system. A central aim in equilibrium thermodynamics is given a system in a well defined initial state thermodynamic state , subject to accurately specified constraints, to calculate what the state of the system will be once it has reached equilibrium. An equilibrium state is obtained by seeking the extrema of a thermodynamic potential function, whose nature depends on the constraints imposed on the system. For example, a chemical reaction at constant temperature ... of their entropy . Equilibrium thermodynamics differs from non equilibrium thermodynamics , in that, with the latter ... by dissipative thermodynamic fluxes. In equilibrium thermodynamics, by contrast, the state of the system ... Ruppeiner geometry is a type of information geometry used to study thermodynamics. It claims ... these equilibrium states is related to the fluctuation between them. See also Non equilibrium thermodynamics Thermodynamics References Adkins, C.J. 1983 . Equilibrium Thermodynamics, 3rd Ed . Cambridge Cambridge University Press. Cengel, Y. & Boles, M. 2002 . Thermodynamics an Engineering Approach, 4th Ed. textbook . New York McGraw Hill. Kondepudi, D. & Prigogine, I. 2004 . Modern Thermodynamics ... . A to Z of Thermodynamics dictionary . New York Oxford University Press. Category Thermodynamics Category Branches of thermodynamics fa ro Echilibru termodinamic ...   more details



  1. Quantum thermodynamics

    In the physical sciences, quantum thermodynamics is the study of heat and Work thermodynamics work dynamics in quantum systems. Approximately, quantum thermodynamics attempts to combine thermodynamics ... can be quantized, as based on the first two laws of thermodynamics as described by Rudolf Clausius ... objective in quantum thermodynamics is the quantitative and qualitative determination of the laws of thermodynamics at the quantum level in which uncertainty and probability begin to take effect. A fundamental question is what remains of thermodynamics if one goes to the extreme limit of small quantum systems having a few degrees of freedom? If thermodynamics applies at this level, does the second law of thermodynamics remain unchanged, or is there a more universal formulation than the many existing ... on. The search for a more universal formulation of the second law of thermodynamics on the quantum level has perplexed physicists for many years. Mechanical quantum and equilibrium thermodynamics ... and dynamics of the two systems mechanical and equilibrium thermodynamics are compared in relation to entropy and the second law of thermodynamics .A more universal description of the laws of thermodynamics is needed to rationalize the two seemingly conflicting notions of mechanical and equilibrium thermodynamics into relative subsets of a completely generalized law. Maxwell explained ... view of thermodynamics and has produced many beneficial results including the Boltzmann equation ... between mechanics and equilibrium thermodynamics. Keenan Thermodynamics The keenan School of thermodynamics ... verses equilibrium thermodynamics problem while still maintaining the formalism implied by the traditional ..., formulated a resolution of a unified quantum theory of mechanics and thermodynamics ... as both time independent and dependant. vi The entropy of quantum thermodynamics is a measure of the spatial ... Is Quantum Thermodynamics? Web. 1 Dec. 2011. http www.ing.unibs.it beretta www.quantumthermodynamics.org ...   more details



  1. Endoreversible thermodynamics

    Thermodynamics cTopic Thermodynamic system Systems Endoreversible thermodynamics is a subset of irreversible thermodynamics aimed at making more realistic assumptions about heat transfer than are typically made in reversible thermodynamics. It gives an upper bound on the energy that can be derived from a real process that is lower than that predicted by Carnot for a Carnot cycle , and accommodates the exergy destruction occurring as heat is transferred irreversibly. Endoreversible thermodynamics was discovered in simultaneous work by Novikov ref name Novikov1958 I. I. Novikov. The Efficiency of Atomic Power Stations . Journal Nuclear Energy II, 7 125 128, 1958. translated from Atomnaya Energiya, 3 1957 , 409. ref and Chambadal. ref name Chambadal1957 Chambadal P 1957 Les centrales nucl aires . Armand Colin, Paris, France, 4 1 58 ref , although sometimes mistakenly attributed to Curzon & Ahlborn ref name Curzon1975 F.L. Curzon and B. Ahlborn, American Journal of Physics, vol. 43, pp. 22 24 1975 ref Novikov engine Image NovikovEngine.png 500px thumb right Novikov engine showing irreversible heat transfer between T H and T iH, coupled to a Carnot cycle operating between T iH and T C ref name Wagner2008 . An equation for the efficiency of a semi ideal heat engine operating at maximum power output in which heat transfer is irreversible but other components are ideal can be shown to have ... name Callan1985 Callen, Herbert B. 1985 . Thermodynamics and an Introduction to Thermostatistics 2nd ... thermodynamics is given in the thesis by Katharina Wagner ref name Wagner2008 M.Sc. Katharina Wagner, A graphic based interface to Endoreversible Thermodynamics , TU Chemnitz, Fakult t f r Naturwissenschaften ... . It is also introduced by Hoffman et al. ref K. H. Hoffmann. An introduction to endoreversible thermodynamics .... Endoreversible Thermodynamics. J. Non Equilib. Thermodyn., 22 4 311 355, 1997. ref . A thorough discussion ... Thermodynamics Category Thermodynamics ...   more details



  1. Atmospheric thermodynamics

    Atmospheric thermodynamics is the study of heat to work transformations and the reverse in the earth ... thermodynamics , atmospheric thermodynamics studies such phenomena as properties of moist air, formation .... Atmospheric thermodynamics forms a basis for cloud microphysics and convection parametrization ..., including convective equilibrium climate models. Overview Atmospheric thermodynamics focuses on water ... dynamics of the atmosphere. The major role of atmospheric thermodynamics is expressed in terms of adiabatic ... Gibbs published Graphical Methods in the Thermodynamics of Fluids. Image Skew T.gif thumb Thermodynamic ... towards the development of theoretical models of atmospheric thermodynamics which drew the attention of the best minds. Papers on atmospheric thermodynamics appeared in the 1860s that treated ... he published voluminous work entitled On the thermodynamics of the atmosphere . ref Zur Thermodynamik ... thermodynamics as a branch of science began to take root. The term atmospheric thermodynamics , itself ... the standpoint of atmospheric thermodynamics Occasional scientific papers of the Westwood Astrophysical ... thermodynamics is an integral part of weather forecasting. Chronology 1751 Charles Le Roy recognized ... temperature Chemical thermodynamics Cloud physics Equilibrium thermodynamics Fluid dynamics Non equilibrium thermodynamics Thermodynamics Special topics Lorenz, E. N., 1955, Available potential energy ... author Bohren, C.F., and B. Albrecht title Atmospheric Thermodynamics publisher Oxford University Press year 1998 isbn 0 19 509904 4 Curry, J.A. and P.J. Webster, 1999, Thermodynamics of Atmospheres ... Press . ISBN 0 19 506630 8 thermodynamics of tropical cyclones . Iribarne, J.V. and Godson, W.L., Atmospheric thermodynamics, Dordrecht, Boston, Reidel basic textbook . Petty, G.W., http www.sundogpublishing.com AtmosThermo Announcement.html A First Course in Atmospheric Thermodynamics , Sundog Publishing ..., A. title An Introduction to Atmospheric Thermodynamics publisher Cambridge University Press ...   more details



  1. Laws of thermodynamics

    Thermodynamics cTopic Laws of thermodynamics Laws The four laws of thermodynamics define fundamental ... such as perpetual motion . The four laws of thermodynamics are ref name Guggenheim 1985 Guggenheim, E.A. 1985 . Thermodynamics. An Advanced Treatment for Chemists and Physicists , seventh edition, North ... name Adkins 1968 Adkins, C.J. 1968 . Equilibrium Thermodynamics , McGraw Hill, London, ISBN 0 07 084057 1. ref ref name Kondepudi 2008 Kondepudi D. 2008 . Introduction to Modern Thermodynamics , Wiley .... 2008 . Understanding Non equilibrium Thermodynamics. Foundations, Applications, Frontiers , Springer ... PT355 ref Zeroth law of thermodynamics If two systems are in thermal equilibrium with a third system ... . First law of thermodynamics Heat and work are forms of energy transfer. While conservation of energy .... Second law of thermodynamics The entropy of any isolated system not in thermal equilibrium ... machine s of the second kind are impossible. Third law of thermodynamics The entropy of a system ... is zero. Classical thermodynamics describes the exchange of work and heat between systems. It has a special ... 1962 De Groot, S.R., Mazur, P. 1962 . Non equilibrium Thermodynamics , North Holland, Amsterdam. ref ... of thermodynamics are important fundamental Physical law law s in physics and they are applicable in other natural sciences . Zeroth law The zeroth law of thermodynamics may be stated as follows quote ... equilibrium is fundamental to thermodynamics, the need to state it explicitly as a law ... The first law of thermodynamics may be expressed by several forms of the fundamental thermodynamic ... the net Work thermodynamics work done by the system. More specifically, the First Law encompasses the following ... gives the first law of thermodynamics. Second law The second law of thermodynamics asserts the existence ... forms in the external parameters . ref ilhav , M. 1997 . The Mechanics and Thermodynamics ... that wider scope of the law. According to the second law of thermodynamics, in a reversible heat ...   more details



  1. Work (thermodynamics)

    For other uses of Work in physics Work physics Work electrical Thermodynamics cTopic List of thermodynamic properties System properties In thermodynamics , work performed by a system is the energy transferred ... in thermodynamics. Therefore, all energy changes in a system not a result of heat transfer ... be chemical ref name Guggenheim 1985 Guggenheim, E.A. 1985 . Thermodynamics. An Advanced Treatment ..., Bludman, S.A. 2005 . The nonequilibrium thermodynamics of radiation interaction , Chapter 12, pages ... 2009 North, G.R., Erukhimova, T.L. 2009 . Atmospheric Thermodynamics. Elementary Physics ... The first law of thermodynamics relates changes in the internal energy of a thermodynamic system to two ... between work and heat is the crucial essence of thermodynamics . Work refers to forms ... Thermodynamics , Chapter 4 Work and heat , 3rd edition ref , or by thermal radiation ref name Prevost ..., D. 2008 . Introduction to Modern Thermodynamics , John Wiley and Sons, Chichester, ISBN 9780470015988 ... matter with its internal energy. The zeroth law of thermodynamics allows only one kind of temperature ... to temperature, namely entropy . Formal definition According to the first law of thermodynamics ... D. 2008 . 12th Edition. Chapter 19 First Law of Thermodynamics, page 656. Pearson Addison Wesley, San ... in chemical thermodynamics . pV work is represented by the following differential equation ref ... thermodynamics reversible process of a closed system . The first law of thermodynamics can therefore ... law of thermodynamics states math dU dW dQ math . For an adiabatic process, math dQ 0 math and thus ... is determined by the second law of thermodynamics . Under many practical situations this can be represented ... See also Mechanical work Thermodynamics Electrical work Chemistry Chemical reactions References reflist G.J. Van Wylen and R.E. Sonntag 1985 , Fundamentals of Classical Thermodynamics , John Wiley & Sons, Inc., New York ISBN 0 471 82933 1 DEFAULTSORT Work Thermodynamics Category Thermodynamics ar ...   more details



  1. Timeline of thermodynamics

    Unreferenced date August 2010 A Chronology timeline of events related to thermodynamics . Before 1800 1650  Otto von Guericke builds the first vacuum pump 1660  Robert Boyle experimentally discovers Boyle s Law , relating the pressure and volume of a gas published 1662 1665  Robert Hooke stated Heat being nothing else but a very brisk and vehement agitation of the parts of a body. 1669 ... law of thermodynamics , and initiating the science of thermodynamics 1827  Robert Brown ..., and the process reversible process thermodynamics reversed 1843  John James Waterston ... of energy, the first law of thermodynamics 1848 1899 1848  William Thomson, 1st Baron Kelvin William ... Clausius gives the first clear joint statement of the First Law of Thermodynamics first and Second Law of Thermodynamics second law of thermodynamics, abandoning the caloric theory, but preserving Carnot ... space , and publishes his H theorem 1874  Thomson formally states the second law of thermodynamics ... force behind chemical reaction s, and chemical thermodynamics in general. Citation needed .... 1889  Walther Nernst relates the voltage of electrochemical cells to their chemical thermodynamics ... of random molecular motion 1906  Nernst presents a formulation of the third law of thermodynamics ...  Constantin Carath odory develops an axiomatic system of thermodynamics 1910  Einstein and Marian ... considers the thermodynamics of atomic spectral line s and predicts stimulated emission 1919  James .... 1957  Edwin T. Jaynes gives Maximum entropy thermodynamics MaxEnt interpretation of thermodynamics ... See also History of physics History of thermodynamics Timeline of information theory List of notable textbooks in statistical mechanics Physics Thermodynamics DEFAULTSORT Timeline Of Thermodynamics Category History of ideas Thermodynamics, statistical mechanics, and random processes Category History of thermodynamics Category Physics timelines Thermodynamics, statistical mechanics, and random processes ...   more details



  1. Volume (thermodynamics)

    for the general geometric concept volume Thermodynamics cTopic List of thermodynamic properties System properties In thermodynamics , the volume of a thermodynamic system system is an important extensive parameter for describing its thermodynamic state . The specific volume , an intensive property , is the system s volume per unit of mass. Volume is a function of state and is interdependent with other thermodynamic properties such as pressure and thermodynamic temperature temperature . For example, volume is related to the pressure and thermodynamic temperature temperature of an ideal gas by the ideal gas law . The physical volume of a system may or may not coincide with a control volume used to analyze the system. Overview The volume of a thermodynamic system typically refers to the volume of the working fluid, such as, for example, the fluid within a piston. Changes to this volume may be made through an application of work thermodynamics work , or may be used to produce work. An isochoric process however operates at a constant volume, thus no work can be produced. Many other thermodynamic process es will result in a change in volume. A polytropic process , in particular, causes changes to the system so that the quantity math pV n math is constant where math p math is pressure, math V math is volume, and math n math is the polytropic index , a constant . Note that for specific polytropic indexes a polytropic process will be equivalent to a constant property process. For instance ... in the form of work is involved. Volume is one of a pair of conjugate variables thermodynamics ... energy of the system. The second law of thermodynamics describes constraints on the amount of useful ... Yunus A. last2 Boles first2 Michael A. title Thermodynamics an engineering approach year 2002 publisher ... flow rate References reflist DEFAULTSORT Volume Thermodynamics Category Atmospheric thermodynamics Category Gases Category Physical chemistry Category Standards Category Thermodynamics Category Volume ...   more details



  1. Component (thermodynamics)

    Refimprove date April 2007 In thermodynamics, a component is a chemically independent constituent of a system. The number of components represents the minimum number of independent species necessary to define the composition of all phases of the system. ref name Atkins Peter Atkins and Julio de Paula, Physical Chemistry 8th Edition W.H. Freeman 2006 , p.175 176 ref Calculating the number of components in a system is necessary, for example, when applying Gibbs phase rule in determination of the number of degrees of freedom physics and chemistry degrees of freedom of a system. The number of components is equal to the number of distinct chemical species constituents , minus the number of chemical reactions between them, minus the number of any constraints like charge neutrality or balance of molar quantities . Examples Water A system that contains water in the liquid state also contains hydronium cations and hydroxyl anions according to the reaction 2 H sub 2 sub O math rightleftharpoons math H sub 3 sub O sup sup OH sup sup The number of components in such a system is 3 chemical constituents 1 chemical reaction 1 constraint charge neutrality 1. CaCO sub 3 sub CaO CO sub 2 sub system This is an example of a system with several phases, which at ordinary temperatures are two solids and a gas. There are three chemical species CaCO sub 3 sub , CaO and CO sub 2 sub and one reaction CaCO sub 3 sub math rightleftharpoons math CaO CO sub 2 sub . The number of components is then 3 1 2 ref name Atkins . If the composition of the same system is instead expressed in terms of ions, the number of independent components does not change. There are now 4 chemical species Ca sup 2 sup , CO sub 3 sub sup 2 sup , O sup 2 sup and CO sub 2 sub and the number of components is calculated as 4 chemical constituents 1 chemical reaction 1 constraint charge neutrality 2. Water Hydrogen Oxygen The reactions .... ref name Atkins References references Category Chemical thermodynamics hu Komponens k mia nl Component ...   more details



  1. Thermodynamics of the universe

    orphan date August 2010 The thermodynamics of the universe is dictated by which form of energy dominates it relativistic particle s which are referred to as radiation , or non relativistic particles which are referred to as matter. The former are particles whose rest mass is zero or negligible compared to their energy, and therefore move at the speed of light or very close to it the latter are particles whose kinetic energy is much lower than their rest mass and therefore move much slower than the speed of light. The intermediate case is not treated well analytic solution analytically . Energy density in the expanding universe If the universe is not undergoing a phase transition , one can approximate its thermodynamics by neglecting interactions between particles, and assuming all the energy is in the form of heat . Then by the first law of thermodynamics math 0 dQ dU P dV math Where math Q math is the total heat which is assumed to be constant, math U math is the internal energy of the matter and radiation in the universe, math P math is the pressure and math V math the volume. One then finds an equation for the energy density math u equiv U V math , and so math du d left U over V right dU over V U dV over V 2 p u dV over V 3 p u da over a math where in the last equality we used the fact that the total volume of the universe is proportional to math a 3 math , math a math being the Scale factor Universe scale factor of the universe. In fact this equation can be directly obtained from the equations of motion governing the Friedmann Lema tre Robertson Walker metric by dividing the equation above with math dt math and identifying math rho u math the energy density , we get one of the Friedmann Lema tre Robertson Walker metric Interpretation FLRW equations of motions . In the comoving coordinates , math u math is equal to the mass density math rho math . For radiation, math ... Cosmic inflation Thermodynamics First law of thermodynamics Category Physical cosmology ...   more details



  1. Biological engineering

    Automata and Nearest Neighbor Interactions Biological engineering , biotechnological engineering or bioengineering including biological systems engineering is the application of concepts and methods ... inanimate tools, structure s and Process engineering processes , biological engineering uses primarily ... of living organisms . The differentiation between biological engineering and overlap with Biomedical ... engineers are specifically focused on applying biological and other sciences toward medical innovations, whereas biological engineers are focused principally on applying biology but not necessarily to medical uses. Neither biological engineering nor biomedical engineering is wholly contained within the other, as there are non biological products for medical needs and biological products for non ... is a branch of biological engineering which strives to find ways in which the structures and functions ... process of recognition of the structure, function, and precise method of operation of complex biological systems. Thus biological engineering is a science based discipline founded upon the biological ... between engineering and biology in biological engineering design, Int J Engng Ed 2005, 21, 1 7 ref Biological engineering can be differentiated from its roots of pure biology or classical engineering in the following way. Biological studies often follow a reductionist approach in viewing a system ..., approaches, and technologies from component concepts. Biological engineering utilizes both kinds ... Journal of Biological Engineering, Journal of Biological Engineering 1,1, 2007, http www.jbioleng.org, ref In addition, because it is an engineering discipline, biological engineering is fundamentally ... knowledge to solve real world problems in a cost effective way. Although engineered biological systems ... and reliably engineer biological systems that behave as expected is at present less well developed ... Engineering and Biological Engineering however, the differences are quite small. Biomedical ...   more details



  1. First law of thermodynamics

    Thermodynamics cTopic Laws of thermodynamics Laws The first law of thermodynamics is a version of the law ... of heat supplied to the system, minus the amount of Work thermodynamics work performed ... system is constant. Original statements The first explicit statement of the first law of thermodynamics ... , translation here taken from Truesdell, C.A. 1980 . The Tragicomical History of Thermodynamics ... gallica.bnf.fr ark 12148 bpt6k15164w f400.image . ref Description The first law of thermodynamics was expressed ... to a combination of heat added to the system and Work thermodynamics work done by the system. Taking ... of the internal energy. Evidence for the first law of thermodynamics The first law of thermodynamics ..., C.A. 1980 Truesdell, C.A. 1980 . The Tragicomical History of Thermodynamics, 1822 1854 , Springer .... This evidence leads to a statement of one aspect of the first law of thermodynamics For all adiabatic ... the first law of thermodynamics for finite processes composed of distinct adiabatic and isothermal .... In other words W P d V where P is pressure and V is Volume thermodynamics volume . As such a quasistatic ... inhomogeneous systems Classical thermodynamics is focused on homogeneous systems e.g. Planck 1897 1903 ref Planck, M. 1897 1903 . Treatise on Thermodynamics , translated by A. Ogg, Longmans, Green ... in terms of kinetic and potential energies. ref Bailyn, M. 1994 . A Survey of Thermodynamics , American ... flow, is an important quantity in non equilibrium thermodynamics . This is a serious difficulty ... Robert Meyer.jpg thumb 140px Julius Robert von Mayer The discovery of the first law of thermodynamics ... law. ref Truesdell, C.A. 1980 . The Tragicomical History of Thermodynamics, 1822 1854 , Springer ... of Nature as quoted in Lehninger, A. 1971 . Bioenergetics the Molecular Basis of Biological ... of thermodynamics Entropy production Perpetual motion Relativistic heat conduction References reflist ... Thermodynamics an engineering approach publisher McGraw Hill Higher Education year 2007 isbn 0 07 125771 ...   more details



  1. Non-equilibrium thermodynamics

    thermodynamics has been successfully applied to describe biological systems such as Protein Folding ...thermodynamics cTopic Branches Non equilibrium thermodynamics is a branch of thermodynamics that deals ... reactions. Non equilibrium thermodynamics is concerned with transport processes and with the rates of chemical reactions. ref Fowler, R., Guggenheim, E.A. 1939 . Statistical Thermodynamics , Cambridge ... systems requires more general concepts than are dealt with by equilibrium thermodynamics . One fundamental difference between equilibrium thermodynamics and non equilibrium thermodynamics lies ... which are not considered in equilibrium thermodynamics of homogeneous systems. This is discussed ... Thermodynamics Foundations, Applications, Frontiers , Springer Verlag, Berlin, e ISBN 9783540742524. ref Overview Non equilibrium thermodynamics is a work in progress, not an established edifice ... thermodynamics include time rate of dissipation of energy Rayleigh 1873, ref name Rayleigh 1873 Cite ..., I. 1970 . Non equilibrium Thermodynamics. Field Theory and Variational Principles , translated by E. Gyarmati and W.F. Heinz, Springer, Berlin. ref ref name Lavenda 1978 Lavenda, B.H. 1978 . Thermodynamics ... 1970 Non equilibrium Thermodynamics. Field Theory and Variational Principles , translated by E. Gyarmati ... variant system time variation . One initial approach to non equilibrium thermodynamics might be called quasi zero dimensional . There are other approaches to non equilibrium thermodynamics, for example extended irreversible thermodynamics , ref name Lebon Jou Casas V zquez 2008 ref name JCVL 1993 but they are hardly touched on in the present article. Quasi radiationless non equilibrium thermodynamics ... Wildt first R. year 1972 title Thermodynamics of the gray atmosphere. IV. Entropy transfer and production ... journal last Essex first C. year 1984a title Radiation and the irreversible thermodynamics of climate ... of bilinearity in the irreversible thermodynamics of irreversible processes journal Planetary ...   more details



  1. Critical line (thermodynamics)

    In thermodynamics , a critical line is the higher dimensional equivalent of a Critical point thermodynamics critical point ref B. Windom, Theory of Phase Equilibrium , J. Phys. Chem 1996 , 13190 13199 ref . It is the locus of contiguous critical points in a phase diagram . These lines cannot occur for a single substance due to the Gibbs phase rule phase rule , but they can be observed in systems with more variables, such as mixtures. Two critical lines may meet and terminate in a tricritical point . References references States of matter Category Thermodynamics Category Critical phenomena ...   more details



  1. Biological model

    A biological model may refer to a model organism a mathematical model of a biological system the Model of Abnormality The Biological .28Medical.29 Model biological medical model of abnormality disambig ...   more details



  1. The Journal of Chemical Thermodynamics

    Infobox journal title The Journal of Chemical Thermodynamics cover discipline Thermodynamics editor A. P dua, J.P.M. Trusler, R. Weir website http www.elsevier.com wps find journaldescription.cws home 622860 description description publisher Elsevier country abbreviation J. Chem. Thermodyn. history 1969 present frequency Monthly impact 1.966 impact year 2009 link1 http www.sciencedirect.com science journal 00219614 link1 name Online access ISSN 0021 9614 eISSN CODEN JCTDAF LCCN 70005751 OCLC 01243408 The Journal of Chemical Thermodynamics is a monthly Peer review peer reviewed scientific journal covering experimental thermodynamics and thermophysics including bio thermodynamics, calorimetry , phase equilibria, equilibrium thermodynamic properties and transport properties. It is published by Elsevier . The Editor in chief editors in chief are A. P dua, J.P.M. Trusler, and R. Weir. Abstracting and indexing The journal is abstracted and indexed in Chemical Abstracts Service Chemical Abstracts , Science Citation Index Chemistry Citation Index , Current Contents Physics, Chemical, & Earth Sciences, CSA database company Engineered Materials Abstracts , Inspec Physics Abstracts , Reactions Citation Index , Science Citation Index , and Scopus . External links Official http www.elsevier.com wps find journaldescription.cws home 622860 description description DEFAULTSORT Journal Of Thermodynamics, The Category Monthly journals Category Elsevier academic journals Category Publications established in 1969 Category English language journals Category Chemistry journals de The Journal of Chemical Thermodynamics ...   more details



  1. Social thermodynamics theory

    Orphan date September 2009 Technical date September 2009 Expert subject Physics date September 2009 In physics , social thermodynamics theory attempts to describe Social phenomenon social phenomena using an approach with the mathematical structure of thermodynamics . It is based on the general variational minimum Fisher information principle of minimization of Fisher information , which is known that can be used as formal generator of Thermodynamic equilibrium equilibrium and non equilibrium thermodynamics . This aim born with the derivation of Zipf s Law from first principle s ref Cite doi 10.1016 j.physleta.2009.10.027 ref , the prediction of scale Free Ideal Gas scale free ideal gas es ref Cite doi 10.1016 j.physa.2009.09.054 ref , both the reproduction of city size distributions and electoral results with competitive cluster growth processes on Scale Free Ideal Network scale free ideal network s, and the demonstration of the Dunbar s number as the cause of the six degrees of separation . ref Unravelling the size distribution of social groups with information theory on complex networks, A. Hernando, D. Villuendas, C. Vesperinas, M. Abad, A. Plastino, submitted to European Physics Journal B http arxiv.org abs 0905.3704 ref In fiction The idea of social thermodynamics shows some similarities to the fictional science of psychohistory fictional psychohistory in Isaac Asimov s Foundation series . References references DEFAULTSORT Social Thermodynamics Theory Category Thermodynamics Category Social systems Category Information theory Category Scale invariant systems Category Sociodynamics ...   more details



  1. Biological data

    Unreferenced stub auto yes date December 2009 Biological data are data or measurement s collected from biological sources, which are often stored or exchanged in a digital form. Biological data are commonly stored in files or databases. Examples of biological data are DNA sequence DNA base pair sequences , and population data used in ecology . See also Bioinformatics Biological database Biological model disambiguation Data modeling DNA sequencing Data mining DEFAULTSORT Biological Data Category Data Category Biology Biology stub ar ...   more details



  1. Biological determinism

    to criminality. Biological determination also biologism is the interpretation of humans and human life from a strictly biological point of view, and it is closely related to genetic determinism . Another definition is that biological determinism is the hypothesis that biological factors such as an organism ... taste in music , committing murder , or writing poetry . A biological determinist would posit that such behaviours, and personality traits in general, are mediated primarily by biological factors, such as genotype genetic makeup . An extreme variant of biological determinism might assert that an organism s behavior is determined entirely by biological factors, and that all of these factors are innate to that organism e.g. DNA . By asserting that biological factors are the primary determinants of behaviour, biological determinism implies of course that non biological factors, such as social convention ..., a variant of biological determinism might consider non innate biological factors, such as the biological ... innate biological factors. Biologists sometimes regard a charge of biological determinism as a straw man , as there is currently no support for strict biological determinism in the field of genetics ... of biological determinism. However, individual scientists may disagree as to the role that genetic ... between genes and environment. In terms of the nature versus nurture debate, biological determinism ... view point. However, the tendency to see biological determinism and social determinism as polar ... is, at least to some extent, pre determined. In this sense the opposite of the biological ... which influence behaviour c.f. free will . The key difference between the theories of biological ... may influence behaviour. A critique has been developed against the uncritical use of biological determinism .... Proponents of eugenics, based on biological determinism, wanted to improve the human species through ... also Anthropological criminology Biological determination sociology Conscious Robots Epigenetics ...   more details



  1. Zeroth law of thermodynamics

    Thermodynamics cTopic Laws of thermodynamics Laws The zeroth Laws of thermodynamics law of thermodynamics .... If A , B , and C are distinct thermodynamic system s, the zeroth law of thermodynamics can be expressed ... of Classical Thermodynamics year 1966 publisher Cambridge University Press page 73 ref blockquote ... D. Kondepudi title Introduction to Modern Thermodynamics year 2008 publisher Wiley page 7 url http www.amazon.com Introduction Modern Thermodynamics Dilip Kondepudi ref blockquote If A is in thermal ... scale s, and justifies the use of the second law of thermodynamics to provide an absolute, or thermodynamic ... 1980 Truesdell, C.A. 1980 . The Tragicomical History of Thermodynamics, 1822 1854 , Springer, New York ... , pages 3 32, especially page 6, in New Perspectives in Thermodynamics , edited by J. Serrin, Springer ... have equal temperatures. ref Beattie, J.A., Oppenheim, I. 1979 . Principles of Thermodynamics , Elsevier ... of the zeroth law of thermodynamics, Am. J. Phys. 30 294 296. ref Clifford Truesdell Truesdell ... to the other. ref Truesdell, C.A. 1980 . The Tragicomical History of Thermodynamics, 1822 1854 , Springer ... on Thermodynamics , translated by A. Ogg, Longmans, Green, London, page 2. ref Planck repeated ... of thermodynamics began to appear in textbooks to refer to statements of this kind, though now stripped ... example is in the textbook of statistical thermodynamics of Fowler and Guggenheim 1939 1965 . ref Fowler, R., Guggenheim, E.A. 1939 1965 . Statistical Thermodynamics. A version of Statistical Mechanics ... of the thermodynamics states of the assemblies, which may be called the temperature t , any one of the assemblies ... of the Existence of temperature could with advantage be known as the zeroth law of thermodynamics ... formulation of homogeneous system macroscopic thermodynamics is undoubtedly that of Carath odory page ... mechanical by Bailyn, ref Bailyn, M. 1994 . A Survey of Thermodynamics , American Institute ... and fundamental presupposition to thermodynamics, without actually labelling it as a numbered law ...   more details




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