The Experts below are selected from a list of 30 Experts worldwide ranked by ideXlab platform

Rabah A. Khalil - One of the best experts on this subject based on the ideXlab platform.

  • A new approach to NMR chemical shift additivity parameters using Simultaneous Linear Equation method.
    Spectrochimica acta. Part A Molecular and biomolecular spectroscopy, 2006
    Co-Authors: Yosif A. Shahab, Rabah A. Khalil
    Abstract:

    Abstract A new approach to NMR chemical shift additivity parameters using Simultaneous Linear Equation method has been introduced. Three general nitrogen-15 NMR chemical shift additivity parameters with physical significance for aliphatic amines in methanol and cyclohexane and their hydrochlorides in methanol have been derived. A characteristic feature of these additivity parameters is the individual Equation can be applied to both open-chain and rigid systems. The factors that influence the 15 N chemical shift of these substances have been determined. A new method for evaluating conformational equilibria at nitrogen in these compounds using the derived additivity parameters has been developed. Conformational analyses of these substances have been worked out. In general, the results indicate that there are four factors affecting the 15 N chemical shift of aliphatic amines; paramagnetic term (p-character), lone pair–proton interactions, proton–proton interactions, symmetry of alkyl substituents and molecular association.

Yosif A. Shahab - One of the best experts on this subject based on the ideXlab platform.

  • A new approach to NMR chemical shift additivity parameters using Simultaneous Linear Equation method.
    Spectrochimica acta. Part A Molecular and biomolecular spectroscopy, 2006
    Co-Authors: Yosif A. Shahab, Rabah A. Khalil
    Abstract:

    Abstract A new approach to NMR chemical shift additivity parameters using Simultaneous Linear Equation method has been introduced. Three general nitrogen-15 NMR chemical shift additivity parameters with physical significance for aliphatic amines in methanol and cyclohexane and their hydrochlorides in methanol have been derived. A characteristic feature of these additivity parameters is the individual Equation can be applied to both open-chain and rigid systems. The factors that influence the 15 N chemical shift of these substances have been determined. A new method for evaluating conformational equilibria at nitrogen in these compounds using the derived additivity parameters has been developed. Conformational analyses of these substances have been worked out. In general, the results indicate that there are four factors affecting the 15 N chemical shift of aliphatic amines; paramagnetic term (p-character), lone pair–proton interactions, proton–proton interactions, symmetry of alkyl substituents and molecular association.

Henry Ehimetalor - One of the best experts on this subject based on the ideXlab platform.

  • New Method Of Solving Systems Of Simultaneous Linear Equations
    Imperial journal of interdisciplinary research, 2017
    Co-Authors: Henry Ehimetalor
    Abstract:

    The research work is solely aimed at solving ystem of Linear Equation is a different way. System of solving Linear Equation may result into rectangular Augmented matrix or square Augmented matrix. The methods used this research work has led to a new way or technique in solving system of Linear Equation – be it in the rectangular or square Augmented matrix form. Most pairs of Simultaneous Linear Equations are usually represented by square augmented matrices with unknown variables, usually 2 x 2 and 3 x 3 matrices. From this research work, it is now possive to: a.       Solve Simultaneous equatin arising from rectangular Augmented matrix of 3 x 2 and 4 x2 order b.       Find the determinant of 2 x 2 and 3 x 3 with a different method – that never existed before. c.        Solve 2 x 2 and 3 x 3 and 4 x 4 aquare Augmented matrix with a new method using determinant but quite different from that of crammer’s rule or method. Take for instance, the pair of Simultaneous Linear Equation given below. x + y = 2 2x + z = 4                                              x = 1, y = 1, z = 2 5y + 3z = 11 It is possible to solve the Equation above using Elimination method, Substitution method, Cramer’s or determinant method and Gauss’s or matrix method provided that the augmented matrices are squares. With a little adjustment of Cramer’s rule, it is now possible to solve these pairs of Linear Simultaneous Euqation with a new formula known as “Ehimetalor’s formula for solving Rectangular or Square Augmented matrix with many unknown variables.”(Research Topic) These formulars will help to solve this problems Simultaneous Linear Equation with Rectangular or Square Augmented Matrix with ease

Giorgio Calzolari - One of the best experts on this subject based on the ideXlab platform.

Asad Naik - One of the best experts on this subject based on the ideXlab platform.

  • Linear Equation solver in Android using OCR
    IOSR Journal of Engineering, 2013
    Co-Authors: Amey Chavan, Asad Naik
    Abstract:

    In this paper we demonstrate an Android application that takes a camera image of a Simultaneous Linear Equation and displays the solution. Application can solve hand written or computer printed Equations. In this paper we demonstrate method for Optimizing Image for better accuracy of OCR.