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phase diagram
phase diagram
phase diagram Graphical method for examining stability in biological systems, e.g. host-parasite relationships. The system variables (the numbers of host and parasite organisms) at different times are plotted against one another, and the time taken to change is shown by a line connecting the co-ordinate points for successive time values. The form of the resulting curve indicates the stability of the system. A line spiralling inward indicates damped oscillations favouring ultimate stability; an outward spiral suggests ultimate instability. By testing different values for the number of organisms it is possible to establish limits for stability. The technique has considerable practical relevance in agriculture.
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Phase Diagram Calculations in Teaching, Research, and Industry
Magazine article from: Metallurgical and Materials Transactions; 2/1/2006; ; 700+ words
; ...characteristic features of a phase diagram in terms of the relative...stabilities of the phases involved. Advances...computers to calculate phase diagrams has made this exercise...of a Binary Phase Diagram and the Relative Thermodynamic...Stabilities of the Phases ...
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Calculating Phase Diagrams Using PANDAT and PanEngine
Magazine article from: JOM; 12/1/2003; ; 700+ words
; ...databases to calculate the phase equilibria or diagrams and the thermodynamic...is unable to handle phases that have multiple...the correct stable phase diagram. In these cases...thermodynamic parameters of phases and the system constraints...obtain an incorrect phase ...
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Simplify multicomponent crystallization: an informed use of phase diagrams makes it easier to come up with efficient separation sequences. (Feature Report).
Magazine article from: Chemical Engineering; 12/1/2001; ; 700+ words
; ...Number of phases present) = (Number...connection with phase diagrams, the phase rule is useful...consistency of a given diagram. One way to make...maximum number of phases that can be present...number of coexisting phases can be determined...whether a region of a phase ...
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Phase diagrams of important electronic materials
Magazine article from: JOM; 12/1/2002; ; 700+ words
; Commentary A phase diagram is the most concise...in a system. Phase diagrams are indispensable in...stability of a single phase or the chemical (interfacial...stability between multiple phases. The driving forces...even the metastable phase equilibria and the...involving ...
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Meteorites and the iron-nickel phase diagram.
Magazine article from: Advanced Materials & Processes; 7/1/1996; ; 700+ words
; ...the iron-nickel phase diagram was published...metallurgical phase diagrams developed, it was...meteorites. The phase diagram was drawn assuming...nickel equilibrium phase diagram have rarely been questioned...should be noted that the diagram was developed in ...
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Embracing phase diagrams: understanding cosmetic scientists' use of phase diagrams and the powerful insights these diagrams provide illuminates the possibilities for trend-setting products.(CHEMICAL reaction)
Magazine article from: Global Cosmetic Industry; 12/1/2006; ; 700+ words
; ...certain temperature for each phase above which liquids refused...OMITTED] Friberg (1) used phase diagrams in a classic paper on emulsion...presence of liquid crystal phases in the external phase (a diagram is available at www.GCImagazine...
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Working with phase diagrams: a binary ceramic phase diagram can give the researcher or engineer a strong indication of some of the behavior for different compositions of materials at different temperatures.
Magazine article from: Ceramic Industry; 8/1/1993; ; 700+ words
; Phase diagrams show the materials technologist how...popular binary (two-phase) ceramic phase diagram is that for alumina-silica. Fig...interpretation. When we look at the phase diagram, we can get specific information that...
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Computation of Ni-Cr Phase Diagram via a Combined First-Principles Quantum Mechanical and CALPHAD Approach
Magazine article from: Metallurgical and Materials Transactions; 7/1/2006; ; 700+ words
; ...to compute binary phases diagrams for Ni-Cr, Ni...the Ni-Cr binary phase diagram. For this system...portion of the phase diagram, however, must be...the Ni-Cr phase diagram at higher temperatures...in predicting the phase diagrams for certain ordered ...
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Sphingomyelin/phosphatidylcholine/cholesterol phase diagram: Boundaries and composition of lipid rafts
Magazine article from: Biophysical Journal; 10/1/2003; ; 700+ words
; ...temperature is obtained. From the diagram at 23[degrees]C and the binary phase diagrams, a reasonable expectation is drawn for the ternary phase diagram at 37[degrees]C. Several...rules. For the ternary phase diagrams, some tie-lines are calculated...ordered/liquid-disordered ...
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CAD/CAM review: Phase Diagrams database. (computer-aided design/computer-aided manufacturing; Phase Diagrams for Ceramists)
Magazine article from: Ceramic Industry; 10/1/1992; ; 700+ words
; ...month, we will examine the Phase Diagrams for Ceramists database...specifically at the phase diagram effort, let's examine...include in a database of phase diagrams? Should one include the actual diagram? Should one include the...
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Phase Diagrams
Encyclopedia entry from: International Encyclopedia of the Social Sciences
Phase Diagrams Phase diagrams display the characteristics...dynamical system. Phase diagrams have been employed in...dimensional phase space. Phase diagrams can also be used to display...be plotted in a phase diagram. To illustrate these...
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phase diagram
Book article from: A Dictionary of Astronomy
phase diagram A graph showing the range of...physical states are known as phases , and the temperatures and pressures under which each phase exists are represented by an...conditions under which two phases can exist in equilibrium...
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Hertzsprung–Russell diagram
Book article from: A Dictionary of Astronomy
...Hertzsprung–Russell diagram ( HR diagram) A graph on which a measure of...spectral type or colour index). The diagram shows how the luminosities and...hydrogen in its core, and during this phase of its life will remain at a point...
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temperature-composition diagram
Book article from: A Dictionary of Earth Sciences
temperature-composition diagram Graphic representation, usually with...x2019; axis, and composition of a phase or phases (e.g. an isomorphous series...variations in composition of the solid phase and the associated melt .
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Gibbs, Josiah Willard
Book article from: Chemistry: Foundations and Applications
...diagram). Where all three phases (ice, water, and vapor...the triple point, on a phase diagram. In other words, there is...and pressure where all three phases of water are in equilibrium...systems have more intricate phase diagrams, but the phase rule allows...
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