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Some results on the spectral decomposition of the axial m-index assignment problem
(1999)
In this paper, axial m-index assignment problem is reformulated as a linear programming problem and several algebraic characterizations of the coefficient matrix A of its problem are derived from known characterizations ...
Sorption of methylene blue from water by organoclays
(1999)
Isotherms were measured for sorption of methylene blue by organoclays. The organoclays were prepared from kaolinite and bentonite by replacing the natural exchangable cations of the quaternary ammonium ions HDTMA ...
Ab initio study of the protometric tautomerism of adenine
(1999)
Eight tautomers of adenine have been studied by using ab initio theory in the gas phase and in solution. Their stability order has been determined by using the HF/3-21G approximation. The HF/3-21G level calculations predict ...
Catalytic-oxidative destruction of benzo-b-thiophene by Fenton' s reagent
(1999)
In order to determine the oxidation behaviour of benzo-b-thiophene, destructive oxidation using Fenton's reagent was studied. Benzo-b-thiophene was converted to benzo-b-thiophene-S,S-dioxide but oxidation resulted mainly ...
Theoretical investigation of the E/Z isomerization and molecular geometries of enamines
(1999)
The E/Z İsomerization of some simple enamines (H2NCH=CHR, R=NO2, CHO, CN, COCH3, COOH) has been investigated by means of quantum-chemical calculations at the HF level using 6-31G* and 6-31+G** basis sets. The single- point ...