H Control

Figure 7.2 Batch cooling crystallization, (a) Uncontrolled rapid cooling without seed crystals, (h) Controlled cooling with seed crystals added after Griffiths, 1928)...

Some workover fluids can produce high corrosion rates. Corrosion control can be accomplished through H control, inhibitors or bactericides. The practical corrosivity limit is 0.05 lb/ft= per operation. 

Fig. 3-2. A, Phosphor-photoelectric detector B, sample cell C, sample D, CA-5 x-ray tube and housing E, milliammeter F, amplifier and rectifier vacuum tubes G, regulated power supply for amplifier tubes and multiplier phototube H, control panel.

Heimbach, P., and Schenkluhn, H. Controlling Factors in Homogeneous Transition-Metal Catalysis. 92, 45-107 (1980). 

Papangelakis, V. G. Georgiou, D. Rubisov, D. H. Control of iron during the sulfuric acid pressure leaching of limonitic laterites. Iron Control and Disposal, Proceedings of the International Symposium on Iron Control in Hydro-metallurgy, 2nd, Ottawa, Oct. 20-23, 1996, 263-274. 

It should be noted that, for establishment of a 1-h Emergency Exposure Guidance Level (EEGL) for another halocarbon, the NRC (NRC 1996 Bakshi et al. 1998) recommended application of a single interspecies UF of 10 to the cardiac sensitization test with the dog. Because blood concentrations of several halocarbons rapidly reached equilibrium, the NRC also extrapolated this 10-min test to the longer time period of 1 h. Controlled human data were not available for many of the materials considered by the NRC, whereas human data are available for HCFC-141b. 

Table 10.10 Separation results of the mixtures of two minerals (1 1) among galena, sphalerite and pyrite by h controlled flotation (pH modified by lime, grinding time for 5 min, in Fe medium)...

Thus, sodium azide and a,p-dinitrocumene do not react unless subjected to the action of light (48 h control period). In contrast to sodium azide, the lithium salt of 2-nitropropane reacts with a,p-dinitrocumene in the dark for 3 h, giving the product of a-substitution in 87% yield. When a,p-dinitrocumene (1 mol) is treated with sodium azide (2 mol) in the presence of the lithium salt of 2-nitropropane (only 0.1 mol), the initial a,p-dinitrocumene quantitatively converts into p-nitrocumyl azide for 3 h. The product is extremely pure, and the reaction requires no UV irradiation (Kornblum et al. 1970) (Scheme 5.6). 

Stewart B.A. Wollhlser, D.A. Wlschmeler, W.H. Caro, J.H. Frere, M.H, "Control of Water Pollution from Cropland Volume I. A Manual for Guideline Development", 1975, Agricultural Research Service, U.S. Dept, of Agriculture, EPA-600/2-75-026a USDA ARS-H-5-1. 

Unger, Stephen H., Controlling Technology Ethics and the Responsible Engineer, Wiley, 1994. 

A Fig. 6.1.7a-k (continued) h control blood i blood PTPS deficiency j blood DHPR deficiency blood GTPCH deficiency. Neo Neopterin, Pri primapterin... 

Nash, H. Controlled release systems for contraception, in Langer, R., and Wise, D. (eds.), Medical Applications of Controlled Release, Vol. 2. Boca Raton, FL CRC Press, 1984, pp. 35-64. 

Robinson, J. R., and Lee, V. H. Controlled Drug Delivery Fundamentals and Applications. New York Marcel Dekker, 1987. 

Theobald, J. A., Oxtoby, N. S., Phillips, M. A., Champness, N. R., Beton, P. H., Controlling molecular deposition and layer structure with supramolecular surface assemblies. Nature 2003, 424, 1029-1031. 

Schooler, P. Wheatley, A. E. H. Controlling chemoselectivity in the lifhiation of substituted aromatic tertiary amides. Angew. Chem. 

Henry, W. H., "Control of abscission in agricultural crops and its physiological basis", Plant Physiol. (1968)... 

Figure 8.6 Effect of development, surgery and hormone treatments on (Z)-9-tricosene production in male and female houseflies. Radio-GLCs of in vivo incorporation of labeled acetate into the alkenes of A ovarian stage 2,3 females, B stage 4 females, C day-6 control female, D day-6 female which had the CA, CC removed within 6 h of emergence, E day-6 female which was ovariectomized within 6 h of emergence, F day-6 female ovariectomized at emergence and treated with one dose of 5 pg 20-HE, G day-6 female ovariectomized at emergence and treated with three closes of 5 pg 20-HE at 24 h intervals, H control male and I males treated with three doses of 5 pg 20-HE at 24 h intervals.

Lagerkvist A, Chen H. Control of two-step anaerobic degradation of municipal solid waste (MSW) by enzyme addition. Water Sci Technol 1993 27 47-56. 

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