Parker formula

Rotational-rotational (RR) and rotational-translational (RT) energy transfer processes are usually non-adiabatic and fast, because rotational quanta and, therefore, the Massey parameter are small. As a result, the collision of a rotator with an atom or another rotator can be considered a classical collision accompanied by essential energy transfer. The Parker formula for calculation of number of collisions, Zrot, required for RT relaxation was proposed by Parker (1959) and Bray and Jonkman (1970) ... 

Rotational RT Relaxation. Using the Parker formula and data from Table 2-24, calculate the energy well depth of the intermolecular attraction potential T and the probability of RT Relaxation in pure molecular nitrogen at a translational gas temperature of 400 K. 

One borderline circumstance, which should be considered as intentional chemistry for purposes of managing chemical reactivity hazards, is hydration. For example, anhydrous copper sulfate is a white solid with the formula CuS04. When it is crystallized from water, a blue crystalline solid with the formula CuS04-5H20 results, and the water molecules are an integral part of the crystal (Parker 1997). 

Hughes, J. A., West, N. X., Parker, D. M., Newcombe, R. G., and Addy, M. (1999). Development and evaluation of a low erosive blackcurrant juice drink. Final drink and concentrate, formulae comparison in situ and overview of the concept. /. Dent. 27,345-350. 

Parker and Siesser, 1972). (b)-(f) Scatter diagrams of selected elements for additional samples from Namibia (Watkins et ah, 1995), East Australia (O Brien et ah, 1990), Peru and Chili (Burnett, 1977), as well as seamount phosphorites from the equatorial Pacific (Hein et al., 1993). The dotted lines in (b) and (c) are the slopes for shale. The dotted lines in (d) and (e) are slopes for carbonate fluorapatites with possible formulas of Nao.5Ca5(P04)2.s (C03)F... 

Lea and Parker were considering that this formula is vahd only for alumina ratio higher than 0.64. However, as correctly Welch is stating, it is vahd also for lower value of this ratio, since the earlier given plane is corresponding approximately to the plane C3S- C2A -C AF, and the line C2A -C AF embraced, as it was explained earlier, all members of alumina-ferrite sohd solutions, till C2F. 

Since the main procedure in this GEMC method is similar to other Monte Carlo methods for gas flows, the program for it can therefore use many techniques borrowed from the DSMC method, such as the indexing and sample techniques the codes were developed on the basis of the standard DSMC code of Bird [3]. The internal energy exchange model, i.e., the Borgnakke-Larsen model, for the generalized collision model was also modified on the basis of Parker s formula [13]. 

Landslide volume is calculated based on a scaling relationship to convert area of individual landslide to volume, as shown in formula (1) (Parker et al., 2011) ... 

A soln. of l-(p-methoxybenzylidene)semicarbazide in H2S04-acetic acid electrolyzed at a Pt-gauze electrode with a constant current of 200 mA 2-amino-5-p-methoxyphenyl-l,3,4-oxadiazole. Y 85%. Formulas s. Synth. Meth. 18, 305. -z 2-l,2,4-Triazolin-3-ones (cf. Synth. Meth. 27, 501) are obtained under strictly anhydrous conditions by adding acetic anhydride. F. e. s. O. Hammerich and V. D. Parker, Soc. Perkin I 1972, 1718 cf. F. L. Scott, T. M. Lambe, and R. N. Butler, ibid. 1972, 1918. 

Scheme 4.8 Selected cyclen-based ligands from Parker s group and formulae of citric, ascorbic and uric acids...

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