A novel azo-ligand was synthesized by condensation of 2-hydroxy-5-(p-tolyldiazenyl) benzaldehyde, with 2-(phenylamino) acetohydrazide. The ligand as well as its complexes have been characterized by various spectroscopic and analytical techniques. The spectral data confirmed that the ligand adopted either a neutral bidentate or a dibasic tridentate mode, bonded to the metal ions through the oxygen atom of the carbonyl group, azomethine nitrogen atom and/or deprotonated phenolic oxygen atom forming either a tetragonally distorted octahedral, an octahedral or a square planer geometry. X-ray powder diffraction analysis of complexes [Cu(H2L)2Cl2].2H2O and [Cu(L)(H2O)3] indicated that the complexes are crystalline in nature and have monoclinic structures. The antibacterial, as well as the antifungal activities of the ligand and its complexes, were evaluated against Escherichia coli and Aspergillus niger by well- diffusion method. The results showed that complex [VO(H2L)2(SO4)]H2O exhibits the highest antifungal activity while complex [Cu(L)(H2O)3] exhibits the highest antibacterial activity among the tested complexes

Microwave-Assisted organic synthesis of aromatic nitriles and oximes was performed using aromatic aldehydes in the presence of hydroxylamine hydrochloride NH2OH-HCl and solid acids as catalysts to give good yields in short reaction times. The effect of the heterogeneous catalysts such as mixed oxides and TiO2 were discussed. This efficient method enabled us to synthesize a variety of useful nitriles and oximes.

The thick target yields for the nuclear reactions natNi(p,x)57Ni, natCo(p,x)58(m+g)Co and natMo(p,x)95g,96(m+g)Tc were measured, as a function of target thickness, using the thin foil activation technique with proton energy of 26.5 MeV. Haver material foils were used as a target, since it contains the natNi , natCo, and natMo with accurately certified concentrations. The measured yields, as a function of target thicknesses were, measured for proton activation analysis purposes. Haver alloy was used, as a reference for the analysis of some steel samples or iron-based matrices, since it has almost the same stopping power for the accelerated protons. The produced gamma activities in the target due to these nuclear reactions were estimated for the same purposes. The measured yield values were compared to some previously estimated values when it was possible

We are considering the problem of solving a nonlinear differential equation in the Banach space of real functions which are continuous on a bounded and closed interval. By means of the fixed point theory for a strict set contraction operator, this paper investigates the existence, nonexistence, and multiplicity of positive solutions for a nonlinear higher-order boundary value problem.

Magic squares have turned up throughout history, some in a mathematical context, others in philosophical or religious contexts . They have always had a great influence upon mankind’s attitude. Although a definitive judgment of early history of magic squares is not available, it has been suggested that magic squares probably date back to India and pre-Islamic Persian origins. A magic square is a square array of numbers where the rows, columns, diagonals and co-diagonals add up to the same number. The paper discuss about a well-known class of magic squares; the strongly magic square. The strongly magic square is a magic square with a stronger property that the sum of the entries of the subsquares taken without any gaps between the rows or columns is also the magic constant. In this paper, a generic definition for Strongly Magic Squares is given. The matrix properties of 4 × 4 strongly magic squares, different properties of eigenvalues, and eigenvectors are discussed in detail.

By applying series reversion method a formula for inverse cubic spline interpolation is derived and illustrated and the computer programme for inverse cubic spline interpolation is also given.