Pressure comparison

Diffraction of detonation from a tube (0=52 mm) to half-space through an annular orifice with central conical obstacle ( = 15°) in a C2H2 + 2.5O2 mixture at 33 mbar initial pressure. Comparison of experimental soot patterns with numerical simulations. (Courtesy of B. A. Khasainov.)... 

The thermodynamic constants of THF polymerization have been investigated by a number of authors. A variety of experimental techniques have been utilized including determinations of conversion to polymer, combustion, heat capacities eind vapor pressure. Comparison of our results with some previously published data shows that our results are within the range of the values reported (Table 3). 

A more sophisticated approach would be to tie the barometer to a string. Swing it as a pendulum. Calculate the value of g at the street and again at the top of the building. From the difference between the two values of g the height of the building, at least in principle, could be calculated. The student smiled and stated that he knew the conventional atmospheric pressure comparison answer, but that was neither the best practical answer nor the most accurate answer. 

The chemical potential of a gas therefore increases logarithmically with the pressure. Comparison of (10.8), (10.10) and (10.11) shows that, for a perfect gas,... 

Figure 1.11 Pressure comparisons when barometer reading is 29.1 in Hg.

It is of interest to note that (d P/dT )v is zero for a van der Waals gas, as well as for an ideal gas hence, Cv should also be independent of the volume (or pressure) in the former case. In this event, the effect of pressure on Cp is equal to the variation of Cp — Cv with pressure. Comparison of equations (21.4) and (21.13), both of which are based on the van der Waals equation, shows this to be true. For a gas obeying the Berthelot equation or the Beattie-Bridgeman equation (d P/dT )v would not be zero, and hence some variation (f Cv with pressure is to be expected. It is probable, however, that this variation is small, and so for most purposes the heat capacity of any gas at constant volume may be regarded as being independent of the volume or pressure. The maximum in the ratio y of the heat capacities at constant pressure and volume, respectively, i.e., Cp/Cv, referred to earlier ( lOe), should thus occur at about the same pressure as that for Cp, at any temperature. 

The oil yield in an N2 atmosphere is less than Fischer assay because of the high pressure used here (15,16). The oil yield in an H2 atmosphere is 117% of Fischer assay and 130% of the yield in at the same pressure. Comparison of the two oils shows that they have similar carbon and hydrogen contents and aromaticities, but oil produced in an H2 atmosphere has a higher nitrogen content and lower sulfur content. The elemental and NMR oil analyses are similar to results for Fischer Assay and IGT Hytort (Hg) shale oils (17). 

Fig. 10. Undersaturation of the partial CO2 pressure, comparison between sink (10) and karst (13) water — sampled month to month (A—R) and week to week (1—8). The variation of the carbon dioxide undersaturation is entirely identical between the different data points (for calculation of the carbon dioxide undersaturation, see explanation in the text).

For dissolution, the maximum values occurred at low spray rates and high temperatures across all values of air pressure. Comparison of the three contour plots across levels of air pressure showed little effect of air pressure on... 

Figure 4 Variations of the dilational modulus as a function of the surface pressure. Comparison between the model (range II for a medium value of a) (a) and the experimental data (b)...

Colloc h, N., Sopkova-de Oliveira Santos, J., et al. (2007). Protein crystallography under xenon and nitrous oxide pressure Comparison with in vivo pharmacology studies and implications for the mechanism of inhaled anesthetic action. Biophysical Journal, 92(1), 217-224. 

Fig. 11.3 Catalytic activities in the hydrogenation of anisole under hydrogen pressure. Comparison of aqueous suspensions of rhodium and iridium stabilized with HEAisCl.

THERMAL CONDUCTIVITY OF BINARY MIXTURES OF CARBON DIOXIDE, NITROGEN, AND ETHANE AT HIGH PRESSURES. COMPARISON WITH CORRELATION AND THEORY. 

Figure 2. Methane solubility in aqueous solutions as a function of temperature, at constant pressures. Comparison of theoretical predictions (dashed-dotted lines) and experimental data (symbols). Experimental data sets are from (a) Servio and Englezos [19], (b) Seo et al., [20] (c) Kim et al., [21], and (d) Luetal., [18].

Fig. 18.25 (Left) spray configuration at pg = 1.0 MPa (right) droplet-size distiibutirais at different atomization pressures, comparison between experimental data [4, 28] and simulation results based on TAB (log-normal) model, liquid-mass-flow rate 180 kg/h...

Masonry Modeling, Fig. 11 Masonry infill wall subjected to blast pressure comparison among deformed shapes at t = 400 ps for (a) homogenized limit analysis... 

Figure 17.2. Variation of the site fraction of the electronic part of the defect with the oxygen pressure, comparison of the exact solution and the approximate solution obtained from a...

Abstract. Isopiestic vapor pressure comparison measurements were performed with aqueous mixtures of sodium chloride (B) with sodium polystyrenesulfonate, NaPSS, (C) and with polyvinylbenzyltri-methyl ammonium chloride, PVR4NCI, (C) to determine molal osmotic coefficients, for typical strong electrolyte-strong polyelectrolyte systems. The McKay-Perring method was applied to compute the stoichiometric mean molal activity coefficients, yn, of NaCl and y c of NaPSS or PVR4NCI, respectively, in the mixtures as a function of the osmolal concentration, m, and of the osmolal fraction of polyelectrolyte, yc. 

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