Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Modeling energy, analysis

Electric Power Research Institute. "Air Quality Models Update Decision Frameworks and Risk Assessment Models. Energy Analysis and Environment Division Technical Newsletter, Issue 1. February 10, 1984. [Pg.371]

Lehner, B., Czisch, G. and Vassolo, S. (2005). The impact of global change on the hydropower potential of Europe a model-based analysis. Energy Policy, 33 (7), 839-855. [Pg.165]

Flory, Marie, and Abe (194) carried out a statistical mechanics analysis of vinyl polymers on the basis of a three rotational state model. Energy maps have been calculated both for m and r dyads as a function of the rotation angles around the bonds astride the methylene groups (CHR—CH2—CHR). These maps differ from those examined for crystalline polymers where rotations around... [Pg.57]

Abraham, M.H. and Ibrahim, A. (2006) Gas to olive oil partition coefficients a linear free energy analysis. Journal of Chemical Information and Modeling, 46, 1735-1741. [Pg.111]

Recently, stress analysis has been carried out for the determination of stress distribution around inclusions in particulate filled composites. A model based on the energy analysis has led to the determination of debonding stress [8]. This stress, which is necessary for the separation of the matrix and filler, was shown to depend on the reversible work of adhesion (see Eq. 16) and it is closely related to parameter B. [Pg.136]

For a same molecular ratio of aqueous NaY solutions (Y = OH, Cl), experimental data underlines specific effects of nascent OH radicals on transient UV and near-IR electronic configurations. Complex investigations of PHET reactions in the polarization CTTS well of aqueous CT and OH ions are in progress. We should wonder whether a change in the size of ionic radius (OH -1.76 A vs Cl" 2.35 A) or in the separation of the energy levels influence early branchings of ultrafast electronic trajectories. A key point of these studies is that the spectroscopic predictions of computed model-dependent analysis are compared to a direct identification of transient spectral bands, using a cooled Optical Multichannel Analyzer... [Pg.235]

While these "energies" are necessarily approximate, they afford a basis for clear discrimination between sterically allowed and sterically forbidden structures. The "energy" approach also offers a means to extrapolate experimental studies (nmr, X-ray, etc.) on the conformation of small model compounds to the polynucleotide level and to test the relevance of the data in a helical complex. In addition, the method provides a starting point for a refined potential energy analysis of double helical conformation and stability. [Pg.261]

Lottes, Steven A., et a1. (2008), Modelling and Analysis of Calcium Bromide Hydrolysis , accepted for publication in Inti), of Hydrogen Energy, doi 10.1016/j.ijhydene.2008.07.127. [Pg.278]

The degree of ionization/ and the scaled expansion parameter l as a function of the various parameters that enter the model are obtained by minimizing the total free energy. Analysis revels that the degree of ionization decreases if the chain flexibility or the salt concentration increases [48]. This decease is also observed if the chain length or the dielectric constant is decreased [48],... [Pg.154]

Shylakhter AI (1994) Uncertainty estimates in scientific models Lessons from trends in physical measurements, population and energy projections. In Ayyub BM, Gupta MM, eds. Uncertainty modelling and analysis Theory and applications. Amsterdam, Elsevier Science B.V., pp. 477 196... [Pg.93]

The electron affinity can also be deduced from the measurement of the spectrum of the photoelectron emission with monochromatic UV light. This technique is ultra-violet (UV) photoelectron emission spectroscopy (or UV photoemission spectroscopy or UPS). The UPS technique involves directing monochromatic UV light to the sample to excite electrons from the valence band into the conduction band of the semiconductor. Since the process occurs near the surface, electrons excited above the vacuum level can be emitted into vacuum. The energy analysis of the photoemitted electrons is the photoemission spectrum. The process is often described in terms of a three step model [8], The first step is the photoexcitation of the valence band electrons into the conduction band, the second step is the transmission to the surface and the third step is the electron emission at the surface. The technique of UPS is probably most often employed to examine the electronic states near the valence band minimum. [Pg.99]

Figure 6. Determination of the desorption energy dcs from a model-independent analysis of thermal desorption data. The analysis is carried out for an artificially chosen coverage of 0 = 0.15 (a) TDS data (b) integration of the TDS data to give 0 versus T plots (c) plot of In d0/dr versus 1/Tto determine des according to eq 14. The basis for the diagram arc data for Ag/Ru(0001) [58],... Figure 6. Determination of the desorption energy dcs from a model-independent analysis of thermal desorption data. The analysis is carried out for an artificially chosen coverage of 0 = 0.15 (a) TDS data (b) integration of the TDS data to give 0 versus T plots (c) plot of In d0/dr versus 1/Tto determine des according to eq 14. The basis for the diagram arc data for Ag/Ru(0001) [58],...
The activation energy of reaction (19) was assumed to be linearly dependent on the coverage of the catalyst surface. Physically this can be interpreted either as an effect of the adsorbed species, which interact with one another, or as an effect of surface heterogeneity, which would also cause coverage-dependent activation energies. Analysis of this model revealed regions where bifurcations and oscillations were predicted, and it thus became one of the first successful mathematical models in this field. [Pg.77]

Spakovsky, M., Olsommer, B. (2002). Fuel cell systems and system modeling and analysis perspectives for fuel cell development. Energy Conversion Management 43,1249-1257. [Pg.434]

Kulczycki, A. (1985) The correlation between results of different model friction tests in terms of an energy analysis of friction and lubrication. Wear 103 67-75. [Pg.288]


See other pages where Modeling energy, analysis is mentioned: [Pg.89]    [Pg.286]    [Pg.101]    [Pg.244]    [Pg.103]    [Pg.308]    [Pg.202]    [Pg.386]    [Pg.267]    [Pg.165]    [Pg.953]    [Pg.117]    [Pg.143]    [Pg.437]    [Pg.483]    [Pg.160]    [Pg.294]    [Pg.272]    [Pg.6051]    [Pg.307]    [Pg.42]    [Pg.462]    [Pg.207]    [Pg.577]    [Pg.248]    [Pg.286]    [Pg.2]    [Pg.346]    [Pg.23]    [Pg.123]    [Pg.245]    [Pg.175]    [Pg.183]   
See also in sourсe #XX -- [ Pg.161 , Pg.162 , Pg.163 ]




SEARCH



Model analysis

Molecular modelling conformational analysis energy

More familiar models distance-energy analyses

© 2024 chempedia.info