Computer programming basics

Here is an equation for relative humidity (RH) and a short BASIC computer program that enhances its value. The average difference between the equation and actual values runs only 0.33 percentage points and the highest absolute difference seen in comparisons w as 2 percentage points. 

Hsu [124] presents equations for directly calculating random packings based on published data and which are adaptable for computer programming and thereby studying the effects of variables. The basic data are essentially a match with Figure 9-21D. 

An important step toward the understanding and theoretical description of microwave conductivity was made between 1989 and 1993, during the doctoral work of G. Schlichthorl, who used silicon wafers in contact with solutions containing different concentrations of ammonium fluoride.9 The analytical formula obtained for potential-dependent, photoin-duced microwave conductivity (PMC) could explain the experimental results. The still puzzling and controversial observation of dammed-up charge carriers in semiconductor surfaces motivated the collaboration with a researcher (L. Elstner) on silicon devices. A sophisticated computation program was used to calculate microwave conductivity from basic transport equations for a Schottky barrier. The experimental curves could be matched and it was confirmed for silicon interfaces that the analytically derived formulas for potential-dependent microwave conductivity were identical with the numerically derived nonsimplified functions within 10%.10... 

A system of computer programs to perform size exclusion chromatography has been written for the IBM-type family of microcomputers. The programs are written in BASIC and are used in compiled form. 

The pre-gel model calculates the weight average molecular weight of the reaction mixture, while the post-gel model calculates the weight of the sol fraction and the effective crosslink density. A simple computer program using the derived expressions has been written in BASIC and runs on IBM-PC compatible computers. The importance of secondary reactions on cure in typical coatings is discussed. 

Coman et al. [82] used a new modeling of the chromatographic separation process of some polar (hydroxy benzo[a]pyrene derivatives) and nonpolar (benzo[a]pyrene, dibenz[a,/ ]anthracene, and chrysene) polycyclic aromatic compounds in the form of third-degree functions. For the selection of the optimum composition of the benzene-acetone-water mobile phase used in the separation of eight polycyclic aromatic compounds on RP-TLC layers, some computer programs in the GW-BASIC language were written. 

The computer programs available for flow-sheeting in process design can be classified into two basic types ... 

More complicated reactions schemes, including first-order reversible consecutive processes and competitive consecutive reactions, are considered in a textbook by Irwin [89]. Professor Irwin s textbook also includes computer programs written in the BASIC language. These programs can be used to fit data to the models described. 

Robinson and Baker,18 and Wai and Yates 19 below 71 wt% they can be converted to other temperatures using partial molal enthalpies calculated from the relative enthalpies given by Bidinosti and Biermann.47 Similar values for HC1 in Tables 7 and 8 are obtained from Randall and Young48 and Akerlof and Teare,49 quoted by Bunnett,50 and can be converted to other temperatures using coefficients supplied by Liu and Gren.51 The author uses computer programs, written in Microsoft Basic for the Macintosh, that compute these quantities and others. 

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