PUBCHEM CHEMICAL STRUCTURE STANDARDIZATION

PubChem chemical structure standardization

Abstract Background PubChem is a chemical information repository, consisting of three primary databases: Substance, Compound, and BioAssay.When individual data contributors submit chemical substance descriptions to Substance, the unique chemical structures are extracted and stored into Compound through an automated process called structure standard

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Mechanical Properties of Lightweight Concrete Using Recycled Cement-Sand Brick as Coarse Aggregates Replacement

This paper presents the result of replacing natural course aggregate with recycled cement-sand brick (CSB) towards the mechanical properties of concrete.Natural aggregates were used in this study as a control sample to compare with recycled coarse aggregates.This study was also carried to determine the optimum proportion of coarse aggregates replac

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