The aim of the present study was to evaluate the properties of linear andnonlinear optics of the Schiff base Salen. Crystal structure of nanoparticles wasdetermined by a Bruker make diffractometer, Cu-K X-rays of wavelength (=1.5406Å). The XRD patterns were recorded in the 2 range of 10–90o with a step width of 0.02s-1. The UV-Vis Spectra recorded on a computerized double - beam Shimadzu 255...

This paper provides an extended level set (X-LS) based topology optimization method for multi-material design. In the proposed method, each zero of a function ϕab represents boundary between materials and b. A change sign corresponds to material two materials. approach reduces dependence initial configuration in calculation simplifies sensitivity analysis. First, problem is formulated X-LS repr...

Partial correlation based variable selection method was proposed for normal linear regression models by Bühlmann, Kalisch and Maathuis (2010) as a comparable alternative method to regularization methods for variable selection. This paper addresses two important issues related to partial correlation based variable selection method: (a) whether this method is sensitive to normality assumption, an...

A direct and exact method for calculating the density of states for systems with localized potentials is presented. The method is based on explicit inversion of the operator E−H. The operator is written in the discrete variable representation of the Hamiltonian, and the Toeplitz property of the asymptotic part of the obtained infinite matrix is used. Thus, the problem is reduced to the inversio...

Due to good biocompatibility, corrosion and mechanical properties, magnesium (Mg) is considered promising degradable material for orthopedic applications. In this work, Mg-MgZnx (x= 1, 2, 3 and 4) nanocomposites scaffolds with different porosities were synthesized via powder metallurgy method. The microstructure, composition, in vitro corrosion and mechanical properties of porous magnesium-zinc...

This paper is concerned with the choice of the materials to minimise the deformation of mechanical components caused by extraneous thermal and vibrational inputs. First, material ‘performance indices’ (combinations of material properties) are derived for systems subjected to low frequency sinusoidal vibration inputs and for systems subjected to broad– band excitation. A methodology is developed...

We consider a two dimensional stationary Lamé system with variable coefficients. We prove the uniqueness in the inverse source problem of determining polygonal supports of distributing force by observations of surface displacement and stress. Our method is based on the regularity property of solutions to the Poisson equation in a polygonal domain.