S E test

This homogeneity value will become positive when the null hypothesis is not rejected by Fisher s E-test (F < Ei a)Vl)V2) and will be closer to 1 the more homogeneous the material is. If inhomogeneity is statistically proved by the test statistic F > Fi a>VuV2, the homogeneity value becomes negative. In the limiting case F = hom(A) becomes zero. 

Brady, J.V. and Lukas, S.E., Testing Drugs for Physical Dependence Potential and Abuse Liability. NIDA Research Monograph 52, 1984. 

A similar difficulty may arise when the distribution of the background measurement values and/or the standard signals is not normal. This can be tested by the x2 and the Skewedness and excess (S E) test [46]. 

Whereas the jf test only gives information on the distribution of measured values over different classes the S E test gives further information on whether the extreme values are not only systematically too high or too low and whether or not there is an excess of values around the mean. For a number of measured values one determines the parameter (9 [46] ... 

S. E. Stein, D. R. Scott,/. Am. Soc. Mass Spectrom. 1994, 5, 856-866. Optimization and testing of mass spectral library seardi algorithms for compound identification. 

Concern for personnel exposure to hydrazine has led to several innovations in packaging to minimize direct contact with hydrazine, eg, Olin s E-Z dmm systems. Carbohydrazide was introduced into this market for the same reason it is a soHd derivative of hydrazine, considered safer to handle because of its low vapor pressure. It hydrolyzes to release free hydrazine at elevated temperatures in the boiler. It is, however, fairly expensive and contributes to dissolved soHds (carbonates) in the water (193). In field tests, catalyzed hydrazine outperformed both hydrazine and carbohydrazide when the feedwater oxygen and iron levels were critical (194). A pubUshed comparison is available (195) of these and other proposed oxygen scavengers, eg, diethyUiydroxylarnine, ydroquinone, methyethylketoxime, and isoascorbic acid. 

Example 1 Sample Quantity for Composition Quality Control Testing An example is sampling for quality control of a 1,000 metric ton (VFg) trainload of-Ks in (9.4 mm) nominal top-size bentonite. The specification requires silica to be determined with an accuracy of plus or minus three percent for two standard errors (s.e.). With one s.e. of 1.5 percent, V is 0.000225 (one s.e. weight fraction of 0.015 squared). The problem to be solved is thus calculating weight of sample to determine sihca with the specified error variance. 

Example 2 Calculation of Error with Doubled Sample Weight Repeated measurements from a lot of anhydrous alumina for loss on ignition established test standard error of 0.15 percent for sample weight of 500 grams, noting V is the square of s.e. Calculation of variance V and s.e. for a 1000 gram sample is... 

Herbsleb, G. and Schwenk, W., Flow Dependence of the Pitting Corrosion of Cr-Ni Steel in NaCl Solution. 2 Tests with Ultrasonics , Werkst. Korros., 24, 267 (1973) C.A., 79, 56638n El Din Shams, A. M., Bodran, M. M. and Khalil, S. E., Corrosion Behaviour of Manganese-containing Stainless Steel. 3 Their Susceptibility Towards Pitting Corrosion , Werkst. Korros., 24, 290 (1973) C.A., 79, 56642j... 

In this exercise we shall estimate the influence of transport limitations when testing an ammonia catalyst such as that described in Exercise 5.1 by estimating the effectiveness factor e. We are aware that the radius of the catalyst particles is essential so the fused and reduced catalyst is crushed into small particles. A fraction with a narrow distribution of = 0.2 mm is used for the experiment. We shall assume that the particles are ideally spherical. The effective diffusion constant is not easily accessible but we assume that it is approximately a factor of 100 lower than the free diffusion, which is in the proximity of 0.4 cm s . A test is then made with a stoichiometric mixture of N2/H2 at 4 bar under the assumption that the process is far from equilibrium and first order in nitrogen. The reaction is planned to run at 600 K, and from fundamental studies on a single crystal the TOP is roughly 0.05 per iron atom in the surface. From Exercise 5.1 we utilize that 1 g of reduced catalyst has a volume of 0.2 cm g , that the pore volume constitutes 0.1 cm g and that the total surface area, which we will assume is the pore area, is 29 m g , and that of this is the 18 m g- is the pure iron Fe(lOO) surface. Note that there is some dispute as to which are the active sites on iron (a dispute that we disregard here). 

S. E. Lindow and N. J. Panopoulos, Field tests of recombinant ice-Pseudomonas for biological pest control in potato. The Release of Genetically Engineered Microorganisms (M. Sussman, G. H. Collins, F. A. Skinner, and D. E. Stewart-Tull, eds.). Academic Press, London, 1988, p. 121. 

Fig. 7.10 (Continued) (b) VN-x inhibits response to female urine by male guinea-pig X-2 sequential trials (duration, sec. x s.e.) (from Beauchamp et al., 1982). (c) Inter-strain (domestic vs. wild) discrimination by male domestic guinea pig of female urines [sequential testing sec/4 min, s.e., Ss above each bar intact/sham-VN-x. above]. WF= wild female, F = domestic female (from Beauchamp et al., 1982). (d) Effects of VN-x on maternal chemoinvestigation ewe responses to lambs, including tongue-manipulation of palate [c.f. Fig. 7.6(d)], procaine = MOE inhibition, a sign, versus control (from Booth and Katz, 2000).

S.E. Carr and C.R. Moser, Proceedings Inti Coal Testing Conference, Lexington, KY (1990), pp. 52-6. 

Anderson, M.S. Fredrickson, S.E. "Dynamic Etching Tests Aid Fracture Acidizing Treatment Design," SPE/DOE paper 16452, 1987 SPE/DOE Low Permeability Reservoirs Sumposium, Denver. 

Influence on sensitivity can be tested by Student s f-test. The null hypothesis is H0 Sff = S ] 1 where SA]al is the sensitivity under ideal, i.e. robust conditions and Sr]f the sensitivity under the influence of i interferents and j factors ... 

Zeiger E, Haworth S. 1985. Tests with a preincubation modification of the Salmonella/microsome assay. In Ashby J, de Serres FJ, et al., eds. Progress in mutation research. Vol. 5. Evaluation of short-term tests for carcinogens. Amsterdam, The Netherlands Elsevier Science Publishers, 187-199. 

Middaugh, D.P., S.E. Lantz, C.S. Heard, and J.G. Mueller. 1994a. Field-scale testing of a two-stage bioreactor for removal of creosote and pentachlorophenol from ground water chemical and biological assessment. Arch. Environ. Contam. Toxicol. 26 320-328. 

Boyle, T.P., S.E. Finger, R.L. Paulson and C.F. Rabeni. 1985. Comparison of laboratory and field assessment of fluorene. Part II. Effects on the ecological structure and function of experimental pond ecosystems. Pages 134-151 in T.P. Boyle (ed.). Validation and Predictability of Laboratory Methods for Assessing the Fate and Effects of Contaminants in Aquatic Ecosystems. ASTM STP 865. American Society for Testing and Materials, Philadelphia, PA. 

Dillon, S.E., Quintiere, J.G. and Kim, W.H., Discussion of a model and correlation for the ISO 9705 room-comer test, in Fire Safety Science-Proceedings of the 6th International Symposium, IAFSS, 2000, p. 1015-1026. 

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