Big Chemical Encyclopedia

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

Articles Figures Tables About

Taylor critical

Clarke, Kassel, and Storeh5 interpret the slow adsorption on chromic oxide gel as in part a diffusion of an already adsorbed layer to secondary centres of adsorption but Burwell and Taylor criticize the whole diffusion hypothesis, partly on the grounds that the temperature coefficient of the rate of adsorption is not that to be expected for diffusion.6 It may not, however, be easy to distinguish between the gross characteristics of an activated diffusion along the surface, and of an activated adsorption indeed it seems just admissible to consider the former as a localized form of the latter. [Pg.270]

Trautz and Wachenheim have studied the formation of NOCl from NO and CI2 by following the change in total pressure as a function of time. They suggest that reactions (I) and (2) are not adequate to account for their observations since CI2 enhances the rate coefficient of the reaction. Welinsky and Taylor criticize this interpretation because of the manner in which Trautz and Wachenheim handled their data. Upon recalculating the rates in a more reliable manner it is shown that within experimental error no effect of chlorine on the rate coefficient is observed. This appears to be consistent with the data of Welinsky and Taylor, Waddington and Tolman, Kiss ", and Krauss and Saracini . In every case the production of NOCl (1) follows the third-order rate equation. All of these workers followed the reaction via the change in total pressure with time. [Pg.239]

R. O. LEANER, D. F. BANLEN, G. M. HAMILTON, and E. G. TAYLOR, Critical Experiments Performed with Clustered and Uniform Arrays of Rodded Absorbers, WCAP-3269-39 (Nov. 1965). [Pg.538]

This is the well known equal areas mle derived by Maxwell [3], who enthusiastically publicized van der Waal s equation (see figure A2.3.3. The critical exponents for van der Waals equation are typical mean-field exponents a 0, p = 1/2, y = 1 and 8 = 3. This follows from the assumption, connnon to van der Waals equation and other mean-field theories, that the critical point is an analytic point about which the free energy and other themiodynamic properties can be expanded in a Taylor series. [Pg.445]

Domb C 1996 The Critical Point. A Historical Introduction to the Modern Theory of Critical Phenomena (London Taylor and Francis)... [Pg.557]

To evaluate the fibrillation behavior of dispersed TLCP domains according to the - 5 relation discussed previously, different - 5 graphs were calculated by eliminating the thickness variable x. The result is reported in Fig. 18. It is obvious that all the points obtained are found to be relatively close to the critical curve by Taylor. The Taylor-limit is also shown in the figure with a solid curve. One finds that all the values calculated on sample 1 are completely above the limit, while all those determined on sample 4 are completely below the limit. The other two samples, 2 and 3, have the We - 5 relation just over the limit. [Pg.695]

According to the criteria, the dispersed phase embedded in the matrix of sample 1 must have been deformed to a maximum aspect ratio and just began or have begun to break up. By observing the relative position of the experimental data to the critical curve, the deformational behavior of the other samples can be easily evaluated. Concerning the fibrillation behavior of the PC-TLCP composite studied, the Taylor-Cox criteria seems to be valid. [Pg.695]

Shull, H., and Lowdin, P.-O., J. Chew. Phys. 23, 1362, "Role of the continuum in superposition of configurations." Criticism of Taylor and Parr (1952). Emphasis of the work by Hylleraas (1928). [Pg.345]

The Earth is a highly unusual planet because life did evolve on it and it thrived to the extent that the surface and atmosphere of the planet were greatly modified. The Earth is unique in this respect relative to all known astronomical bodies (Taylor, 1999). The Earth s location, composition, and evolutionary history are all significant factors in the planet s success in nurturing life. Critical factors include its temperature, its atmosphere, its oceans, its long-term stability and its "just right" abundance of water and other light element compounds. [Pg.27]

Davies, W.J., Schurr, U., Taylor, G. Zhang, J. (1987). Hormones as chemical signals involved in root to shoot communication of effects of changes in the soil environment. In Hormone Action in Plant Development - A Critical Appraisal, ed. G.U. Hoad, M.B. Jackson, J.R. Lenton and R. Atkin, pp. 201-6. London Butterworths. [Pg.90]

However, several flow transition regimes have been identified between laminar and fully turbulent flow. The cessation of laminar Couette flow is marked by the appearance of Taylor vortices in the gap between the two cylinders. For the case of stationary outer cylinder, the critical angular velocity, C0crit> of inner cylinder at which these flow instabilities first appear can be estimated by using the following equations [102] ... [Pg.104]

Rhodes, C.J. (Ed.), Toxicology of the Human Environment The Critical Role ofEree Radicals, Taylor Francis, London, 2000, 512. [Pg.20]

Further considerations here do not depend critically on the accuracy of the working model of Fig. 2. Indeed, the interdomain cleft may as well be at the side of the molecule near the surface of the membrane as can be imagined from inspection of the structures proposed by Taylor et al. [75] and Stokes and Green [76] for the Ca -ATPase. It is only important to stipulate that the molecule contains at least two domains and a cluster of membrane-embedded helices. [Pg.128]

Alley RB, Mayewski PA, Sowers T, Stuiver M, Taylor KC, Clark PU (1997) Holocene climatic instability A prominent, widespread event 8200 yr ago. Geology 25 483-486 Amelin Y, Zaitsev AN (2002) Precise geochronology of phoscorites and carbonatites The critical role of U-series disequilibrium in age interpretations. Geochim Cosmochim Acta 66 2399-2419 Amundson RG, Chadwick OA, Sowers JM, Doner HE (1988) Relationship between climate and vegetation and the stable carbon isotope chemistry of soils in the eastern Mojave Desert, Nevada. Ouat Res 29 245-254... [Pg.450]

FIGURE 10-3. Expected neurohumoral response to hypovolemia. ACTH, adrenocorticotropic hormone ADH, antidiuretic hormone CNS, central nervous system Na, sodium. (Reprinted from Jimenez EJ. Shock. In Civetta JM, Taylor RW, Kirby RR, eds. Critical Care. New York Lippincott-Raven 1997 369, with permission.)... [Pg.198]

Jimenez EJ. Shock. In Civetta JM, Taylor RW, Kirby RR, eds. Critical Care. New York Lippincott-Raven 1997 359-387. [Pg.207]

Schultz AA, Ashby-Hughes B, Taylor R, Gillis DE, Willkins M Effects of pectin on diarrhea in critically ill tube-fed patients receiving antibiotics. Am J Crit Care 2000 9 430-411. [Pg.88]

When the shear rate reaches a critical value, secondary flows occur. In the concentric cylinder, a stable secondary flow is set up with a rotational axis perpendicular to both the shear gradient direction and the vorticity axis, i.e. a rotation occurs around a streamline. Thus a series of rolling toroidal flow patterns occur in the annulus of the Couette. This of course enhances the energy dissipation and we see an increase in the stress over what we might expect. The critical value of the angular velocity of the moving cylinder, Qc, gives the Taylor number ... [Pg.11]

The first three studies by Newman, Freeman and Holzinger (Newman, Freeman, Holzinger, 1937), Juel-Nielsen (Juel-Nielsen, 1980), and Shields (Shields, 1962) have been savaged by critics (Taylor, 1980). The data, however, have stood up to these criticisms quite well (Bouchard, 1982 Bouchard, 1983 Bouchard, 1996c). This is not to say they are without flaws. No experiment of nature is. The more interesting fact is that they... [Pg.127]

FIGURE 5.19 Schematic state diagram of temperature vs % weight of water for an aqueous solution of a hypothetical, glass-forming, small carbohydrate. Reprinted from Critical Reviews in Food Science and Nutrition, Vol.30, Slade and Levine (1991), Beyond water activity Recent advances based on an alternative approach to the assessment of food quality and safety. Pages 115-359, with permission from Taylor and Francis (http / www.informaworld.com). [Pg.257]

Taylor, S. (1986). Histamine food poisoning toxicology and clinical aspects. Critical Reviews in Food Science and Nutrition, 17, CRC Press, Boca Raton, p. 91. [Pg.158]

A classical equation of state is normally composed of a truncated Taylor series in the independent variables, normalized to the critical point conditions (e.g., van der Waals, virial expansion, etc.). All these sorts of equations yield similar (so-called classical ) asymptotic behavior in their derivative properties at the critical point. [Pg.489]


See other pages where Taylor critical is mentioned: [Pg.175]    [Pg.175]    [Pg.99]    [Pg.48]    [Pg.242]    [Pg.702]    [Pg.590]    [Pg.72]    [Pg.115]    [Pg.47]    [Pg.252]    [Pg.416]    [Pg.419]    [Pg.5]    [Pg.214]    [Pg.320]    [Pg.26]    [Pg.304]    [Pg.86]    [Pg.167]    [Pg.261]    [Pg.328]    [Pg.329]    [Pg.102]    [Pg.280]    [Pg.215]    [Pg.453]    [Pg.199]    [Pg.127]   
See also in sourсe #XX -- [ Pg.173 ]




SEARCH



© 2024 chempedia.info