Greenwald

Leslie J. Friedman C. Gail Greenwald Arthur D. Little, Inc. 

Many finely divided metal powders in suspension in air are potential e] losion hazards, and causes for ignition of such dust clouds are numerous [Hartmann and Greenwald, Min. MetalL, 26, 331 (1945)]. Concentration of the dust in air and its particle size are important fac tors that determine explosibility. Below a lower Umit of concentration, no explosion can result because the heat of combustion is insufficient to propagate it. Above a maximum limiting concentration, an explosion cannot be produced because insufficient oxygen is available. The finer the particles, the more easily is ignition accomplished and the more rapid is the rate of combustion. This is illustrated in Fig. 20-7. 

Refs 1) I. Hartman H.P. Greenwald, The ExplosiMlity of Metal-Powder Dust Clouds , Mining Metallurgy 26, 331 (1954) 2) M. 

Although phosphorus ylids also react with esters, that reaction is too slow to interfere Greenwald, R. Chaykovsky, M. Corey, E.J. J. Org. Chem., 1963, 28, 1128. 

GREENWALD P, NIXON D W, MALONE W F, KELLOFF G J, STERN H R and WITKIN K M (1990) Concepts in cancer chemoprevention research . Cancer, 65, 1483-90. 

Greenwald, RA., Moy, W.W. and Lazarus, D. (1976). Degradation of cartilage proteoglycans and collagen by superoxide anions. Arthritis Rheum. 19, 799-806. 

Roy, R.S. and McCord, J.M. (1983). Superoxide and ischaemia conversion of xanthine dehydrogenase to xanthine oxidase. In Oxyradicals and their Scavenging Systems , Vol. 2 (eds. K Greenwald and G. Cohen) pp. 145-153. Elsevier, New York. 

G. Koren, Z. Baryilay, and Greenwald, Tenfold errors in drug administration for children, Pediatrics, 77, 848,... 

Cohen, R.M., Mercer, J.W., and Greenwald, R.M., EPA Groundwater Issue, Design Guidelines for Conventional Pump-and-Treat Systems, EPA 540/S-97/504, September. Available at www.epa.gov/ada/ issue.html, 1998. 

Albanes, D, Heinonen, OP, Huttunen, JK, Taylor, PR, Virtamo, J, Edwards, BK, Haapakoski, J, Rautalahti, M, Hartman, AM, Palmgren, J, and Greenwald, P, 1995. Effects of alpha-tocopherol and beta-carotene supplements on cancer incidence in the alpha-tocopherol beta-carotene cancer prevention study. Am J... 

Yochem, J., Tuck, S., Greenwald, I. and Han, M. (1999) A gp330/megalin-related protein is required in the major epidermis of Caenorhabditis elegans for completion of molting. Development 126, 597-606. 

Steffan JS, Kazantsev A, Spasic-Bosko-vic O, Greenwald M, Zhu YZ, Gohler H, Wanker EE, Bates GP, Housman DE, Thompson LM. Proc Natl Acad Sci USA 2000 97 6763-6768. 

Weissman MM, Bland RC, Canino GJ, Faravelli C, Greenwald S, Hwu HG et al. Cross-national epidemiology of major depression and bipolar disorder. JAMA 1996 276 293-299. 

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