Scott test

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. 

Thanks go to Dr. Michael McKee at Auburn University and the Alabama Research and Education Network, both of which allowed software to be tested on their computers. Thanks are also due the Nichols Research Corporation and Computer Sciences Corporation and particularly Scott von Laven and David Ivey for being so tolerant of employees engaged in such job-related extracurricular activities. 

Equation (5) was examined by Scott and Reese [1] employing mixtures of nitrobenzene and fully deuterated nitrobenzene as the test sample. Their retention times were 8.927 min. and 9.061 min., respectively, giving a difference of 8.04 seconds. The separation ratio of the two solutes was 1.023 and the efficiencies of the front and rear portions of the peaks were 5908 and 3670 theoretical plates, respectively. The detector was, not surprisingly, found to have the same response to both solutes, i.e., a = (3. Thus, inserting these values in equation (5),... 

Soil resistivity The role of soil in the electrical circuitry of corrosion is now apparent. Thus the conductivity of the soil represents an important parameter. Soil resistivity has probably been more widely used than any other test procedure. Opinions of experts vary somewhat as to the actual values in terms of ohm centimetres which relate to metal-loss rates. The extended study of the US Bureau of Standards presents a mass of data with soil-resistivity values given. A weakness of the resistivity procedure is that it neither indicates variations in aeration and pH of the soil, nor microbial activity in terms of coating deterioration or corrosion under anaerobic conditions. Furthermore, as shown by Costanzo rainfall fluctuations markedly affect readings. Despite its short comings, however, this procedure represents a valuable survey method. Scott points out the value of multiple data and the statistical nature of the resistivity readings as related to corrosion rates (see also Chapter 10). 

Scott, P. M., Chemistry effects in corrosion fatigue , in ASTM STP 801, Corrosion fatigue mechanics, chemistry and engineering, American Society for Testing and Materials, pp. 319-345 (1983)... 

Dynamic mechanical measurements for elastomers that cover wide ranges of frequency and temperature are rather scarce. Payne and Scott [12] carried out extensive measurements of /a and /x" for unvulcanized natural mbber as a function of test frequency (Figure 1.8). He showed that the experimental relations at different temperatures could be superposed to yield master curves, as shown in Figure 1.9, using the WLF frequency-temperature equivalence, Equation 1.11. The same shift factors, log Ox. were used for both experimental quantities, /x and /x". Successful superposition in both cases confirms that the dependence of the viscoelastic properties of rubber on frequency and temperature arises from changes in the rate of Brownian motion of molecular segments with temperature. 

SCOTT RIEKE Tensile and Flexure Test System... 

Scott et al. [45] prepared diimine derivatives of 2,2 -diamino-6,6 -dimethyl-biphenyl (as structure 37 in Scheme 19) as copper chelates for the catalyzed cyclopropanation reaction. All catalysts were active in this reaction but enan-tioselectivities varied importantly according to the substitution pattern of the imine aryl group only ortho-substituted ligands (by chloride or methyl groups) led to products with measurable enantioselectivity for the model test reaction (up to 57% ee with 37). 

TESTING DRUGS FOR PHYSICAL DEPENDENCE POTENTIAL AND ABUSE LIABILITY. Joseph V. Brady, Ph.D., and Scott E. Lukas, Ph.D., eds. 

Mice Manure-fertilised wheat versus conventional feed Less testes degeneration and similar reproductive performance in mice fed manure-fertilised wheat. (Scott et aL, 1960)... 

Baughman, D.S., D.W. Moore, and G.I. Scott. 1989. A comparison and evaluation of field and laboratory toxicity tests with fenvalerate on an estuarine crustacean. Environ. Toxicol. Chem. 8 417-429. 

Observations are made in metaphase cells arrested with a spindle inhibitor such as colchicine or colcemid to accumulate cells in a metaphase-like stage of mitosis (c-metaphase) before hypotonic treatment to enlarge cells and fixation with alcohol-acetic acid solution. Cells are then dispersed on to microscope slides and stained and slides are randomized, coded and analyzed for chromosome aberrations with high-power light microscopy. Details of the procedure are given in Dean and Danford (1984) and Preston et al. (1981, 1987). The UKEMS guidelines (Scott et al., 1990) recommend that all tests be repeated regardless of the outcome of the first test and... 

Scott, D., Danford, N., Dean, B., Kirkland, D. and Richardson, C. (1983). In vitro chromosome aberration assays. In UKEMS Subcommittee on Guidelines for Mutagenicity Testing, Report Part I, Basic Test Battery (Dean, B.J., Ed.). UKEMS, Swansea, U.K., pp. 63-86. 

Pollutants emitted by various sources entered an air parcel moving with the wind in the model proposed by Eschenroeder and Martinez. Finite-difference solutions to the species-mass-balance equations described the pollutant chemical kinetics and the upward spread through a series of vertical cells. The initial chemical mechanism consisted of 7 species participating in 13 reactions based on sm< -chamber observations. Atmospheric dispersion data from the literature were introduced to provide vertical-diffusion coefficients. Initial validity tests were conducted for a static air mass over central Los Angeles on October 23, 1968, and during an episode late in 1%8 while a special mobile laboratory was set up by Scott Research Laboratories. Curves were plotted to illustrate sensitivity to rate and emission values, and the feasibility of this prediction technique was demonstrated. Some problems of the future were ultimately identified by this work, and the method developed has been applied to several environmental impact studies (see, for example, Wayne et al. ). 

---