Dixon classifications

Powder Classification Techniques. The Geldart (1973) fluidization, and Dixon (1981) slugging classifications have been found useful in explaining ... 

The following comments are based on the findings of Wypych (1989b) who compared the actual conveying characteristics of several materials with the slugging classifications of Dixon (1979) and Dixon (1981). 

For a product that is well contained inside a particular group (i.e., A, B, C or D), the Dixon (1981) slugging diagram and classifications generally provide a good initial indication of what to expect when the product is conveyed in the dense-phase mode. 

Classify the bulk solid according to the Dixon (1979, 1981) slugging diagram that matches the existing or proposed diameter of pipeline. Based on the research and consulting experience of the author, the following possibilities are proposed in relation to the Dixon (1979) classifications. 

SuSNOW, R.G. and Dixon, S.L. Use of robust classification techniques for the prediction of human cytochrome P450 2D6 inhibition. J. Chem. Inf. Comput. 

Dixon, S.L. and Villar, H.O. (1999). Investigation of Classification Methods for the Prediction of Activity in Diverse Chemical Libraries. J.Comput.Aid.Molec.Des., 13,533-545. 

Classiflcations of Fluidization Behavior Geldart [Powder Technology, 7, 285 (1973)] and later Dixon [Pneumatic Conveying, Plastics Conveying and Bulk Storage, Butters (ed.). Applied Science Publishers, 1981] developed a classification of fluidization/aeration behavior from studies of fluidized beds and slugging in vertical tubes. 

FIG. 21-28 Geldart s classification of aeration behavior with Dixon and Gel-dart boundaries. From Mason, Ph.D. thesis, Thornes Polytechnic, London, 1991, with permission.)... 

S.L. Dixon, H.O. Villar, Investigation of classification methods for the prediction of activity in diverse chemical libraries, J. Comput.-Aided Mol. Des. 1999, 13, 533-45. 

Dixon, M. et al.. Classification and grading of gastritis the updated Sydney system, J. 

A third edition of the well-known book Enzymes by Dixon and Webb reflects the changes and developments which have occurred in the area of enzyme chemistry. Enzyme techniques, isolation, kinetics, classification, specificity, mechanisms, inhibition and activation, co-factors, structure, biosynthesis, and biology are all covered. Most of the material has been rewritten but, despite the wealth of new material included, the book retains the general form of the previous editions. 

For a simple introduction to the chemistry of enzyme action, see Williams (1969), for a list of enzymes with discussion, see Dixon and Webb (1979), and for a multivolume work on enzymes, see Boyer (1970-1983). Isoenzymes and isofunctional enzymes were discussed in Section 4.2. For the classification of enzymes, see International Union of Biochemistry (1978). 

In the same way that Brotherus (1901-1909) cnlminated the era in which classification of pleurocarpous mosses was dominated by the gametophyte, later on Brotherus (1924, 1925) took Fleischer s lead in sporophytic emphasis and applied it across the board to the pleurocarps in the second edition of Die natilrlichen Pflanzenfamilien. Dixon (1932) summarized this philosophy in Verdoom s Manual of Bryology. 

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