Browsing by Author "Cornwell, E."
Now showing items 1-11 of 11
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Cornwell, E. (Real Academia Nacional de Farmacia, 2007)Un nuevo parámetro topográfico (Vc3) aplicado a la disciplina QSPR se utiliza para la reducción del número de variables independientes a una sola variable denominada Vc3. La reducción está basada en la relación de las ...
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Cornwell, E.; Cordano, G. (SOCIEDAD CHILENA DE QUIMICA, 2004-03)Using QSRR modelling, an E index was designed based on the H. P. Schultz MTI index. The E index is a molecular descriptor consisting of a vector and adjacent and distant matrices. Linear regressions were obtained by means ...
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Cornwell, E.; Larrazábal Rojas, Guillermo; Decinti Weiss, Emilio (Sociedad Chilena de Química, 2003)Descriptor combinations, consisting of the electrotopological state (E-state) indexes of some skeletal groups, the first-order 'ҳ molecular connectivity index and the logarithm of the statistical factor, are employed to ...
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Cornwell, E. (SOCIEDAD CHILENA DE QUIMICA, 2006-03)In QSRR discipline an easy novel to used parameter was designed (Vc) for evaluated classical topological index (W, (1)chi, Z, MTI) and two new generation ones (Xu, (1)chi(h)). Regression between Vc and (1)chi(h) presented ...
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Cornwell, E. (SOCIEDAD CHILENA DE QUIMICA, 2000-12)A new vector (V-c) is proposal for structure the topological index of H. P. Schultz (2-MTI). This vector contain elements that correspond to the electron charge density soported on the carbon atoms of the molecule and ...
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Cornwell, E. (Sociedad Chilena de Química, 2002)En este trabajo se demuestra que el uso del algoritmo correspondiente al índice de conectividad de valencia tridimensional corregido [Λ(q)], utilizado a un valor de exponente óptimo, produce un valor máximo para el índice ...
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Cornwell, E. (SOCIEDAD CHILENA DE QUIMICA, 2002-03)In this work one demostrates that the use of the algorithm corresponding to the corrected three-dimensional valence connectivity index [Lambda(q)], used at a value of optimal exponent, produces a maximun value for the ...
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Arancibia, Aquiles; Borie B., Gilda; Cornwell, E.; Medrano, C. (La Societá, 1981)A urinary excretion study was conducted in six healthy male subjects to evaluate the percutaneous absorption of p-aminobenzoic acid (PABA) from three sunscreen preparations. The study was a crossover design and urine ...
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Eyzaguirre, Jaime; Cornwell, E.; Borie B., Gilda; Ramírez, B. (American Society of Microbiology, 1973)Cell-free extract supernatant fluids of Pseudomonas aeruginosa were shown to lack malic dehydrogenase but possess a nicotinamide adenine dinucleotide (NAD) - or NAD phosphate (NADP)-dependent enzymatic activity, with ...
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Cornwell, E.; Cordano, G. (SOCIEDAD CHILENA DE QUIMICA, 2003-06)This work presents two new topological indices, C(u) and C-A(u), that permit their application to organic molecules containing oxygen, nitrogen, sulfur and halogens. These indices are obtained by modifying Schultz molecular ...
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Cornwell, E. (SOC CHILENA QUIMICA, 2007-09)The aim of this work is based in the reduction of independent variables in multivariate regression analysis to one by means a vector dot product (E-3). By this way, it is omit the orthogonalized procedure to obtained valid ...