An improved procedure based on the intercept method of measuring the grain size of single-phase microstructures has been developed that provides a quantitative description of the grain size yet is fast. The procedure combines the statistical advantage of using large numbers with the advantage of interpreting the data as a normal distribution, as verified by the chi square test. Application of the procedure to ferritic microstructures representative of best and worst case conditions indicates that accuracies on the order of 3 percent at a 95 percent confidence level can be achieved. In addition, the procedure is sensitive enough to distinguish a randomly mixed duplex grain structure. The measurements associated with a two-phase microstructure can be more precisely quantified through determination of volume fractions using a Pp measurement based on the use of an appropriate grid network, the coefficient of variation statistic, and the Poisson distribution. The analysis is demonstrated for an a priori system for which the percent accuracy and confidence level can be specified for the volume fraction measurement simply from calculation of the average value for Pp.
Spectrochemical Abstracts
The electric field intensity is 5–10 mV/m in the natural environment near the earth's surface. ... (Samsonov. 2010). Mechanical Impact Mechanical action is understood as a violation of the integrity of the geological array and ...
Sideboxes allow for the discussion of other methods, including mass spectrometry and NMR spectroscopy, throughout the text.
Quantitative Analysis: Gravimetric, Volumetric and Instrumental Analysis
[ 76 ] V. G. Berezkin and T. Yu . Chernysheva , J. Chromatog . , 1977 , 141 , 241 . [ 77 ] J. M. Petruzzi , Anal . Chem . , 1977 , 49,1217A . [ 78 ] Analyst , 1977 , 102 , 321 . [ 79 ] J. M. Petruzzi , Anal . Chem . , 1975 , 47,1277A .
Fundamentals of Analytical Chemistry
This guidebook is different from the majority of existing Excel books in that it emphasizes the design of solutions to unique problems rather than simply the mechanics of spreadsheet use.
How to Take Good Notes a There are several steps involved in producing a good notebook - one which will help you in your study of a subject . Although what follows is written for a chemistry lecture notebook , it can be adapted with ...
Modern Analytical Chemistry is a one-semester introductory text that meets the needs of all instructors.
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