in the present work, the structural and electronic properties, and conductivity of (5,5) and (6,6) single walled carbon nanotubes in the ground state have done by using the hartree-fock and density functional theory dft-b3lyp/6-31g* level. delocalization of charge density between the bonding or lone pair and antibonding orbitals calculated by nbo (natural bond orbital) analysis. these methods a...

This article discusses the optimum layout of coils a superconducting magnet system for magnetic density separation (MDS). MDS is novel technology that combines vertical field gradient with ferrofluid to separate mixtures non-magnetic particles based on their mass density. The process can more than two types in single step, thereby distinguishing it from other techniques using ferrofluid. author...

In this study, we discuss about the energy saving in different type of building walls by using optimum insulation thickness with suitable insulation material. The energy saving is maintained by reducing the energy consumption in buildings. Heat losses from building envelope have a major share in waste of energy. So it is essential to save the energy by using optimum insulation thickness. The in...