carbon nanotube, a new structure of carbon element, is composed of graphene sheets rolled into closed concentric cylinders with diameter of the order of nanometers and length of micrometers. liquid arc discharge was used for fabrication of carbon nanotubes, and subsequently a modified acid treatment method applied for purification stage. a statistical design of experimental (doe) (taguchi metho...

In the current energy scenario, due to increment in power generation from renewable sources, importance of electrical storage systems has increased significantly, and as a consequence, study improvement its efficiency design new also increased. Superconducting material permits Magnetic Energy Storage (SMES). The main problem SMEs is low density they have, what make optimization be one keys for ...

Abstract In order to demonstrate the key functionalities of large-scale LEO navigation constellations, this paper investigates small-scale experimental constellation design problem. The major requirements include achieving quadruple coverage specific ground target areas. regional consists four satellites distributed on two orbit planes. Considering sustainable navigation, it is expected that or...