Padmakar V. Khadikar

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A novel topological index, PI (Padmakar-Ivan index), is derived in this paper. The index is very simple to calculate and has disseminating power similar to that of the Wiener (W) and the Szeged (Sz) indices. The comprehensive studies show that the proposed PI index correlates highly with W and Sz as well as with physicochemical properties and biological(More)
Present paper deals with the examination of Balaban F and G indices for estimating 13C NMR chemical shift sums of alkanes. Set of 66 alkanes were used for this purpose, which have been divided into training set (50 compounds) and test set (16 compounds). The results have shown that Balaban G Index along with connectivity indices yields the best model. The(More)
The terms bioaccumulation and bioconcentration refer to the uptake and build-up of chemicals that can occur in living organisms. Experimental measurement of bioconcentration is time-consuming and expensive, and is not feasible for a large number of chemicals of potential regulatory concern. A highly effective tool depending on a quantitative(More)
Comparative quantitative structure-activity relationship studies on para-substituted aromatic sulphonamides carbonic anhydrase II (CAII) inhibitors are reported in this paper. The study is made utilizing (i) information indices along; (ii) distance-based and connectivity indices and (iii) combination of information, distance-based and connectivity type(More)
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