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Energy performance index method

Lavan Method The Levy and Lavan (2006) fully stressed analysis/redesign procedure uses a single active ground motion, selected based on its high displacement or energy demands. A response analysis is performed using this ground motion, and the objective function, or performance index, is calculated as the value of a chosen response parameter at story / normalised by an allowable value. In this study the parameter chosen is the interstory drift 8-. [Pg.38]

Valko et al. [37] developed a fast-gradient RP-HPLC method for the determination of a chromatographic hydrophobicity index (CHI). An octadecylsilane (ODS) column and 50 mM aqueous ammonium acetate (pH 7.4) mobile phase with acetonitrile as an organic modifier (0-100%) were used. The system calibration and quality control were performed periodically by measuring retention for 10 standards unionized at pH 7.4. The CHI could then be used as an independent measure of hydrophobicity. In addition, its correlation with linear free-energy parameters explained some molecular descriptors, including H-bond basicity/ acidity and dipolarity/polarizability. It is noted [27] that there are significant differences between CHI values and octanol-water log D values. [Pg.416]


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Energy performance index

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