For the first time, a powder of W-5Ni-2Fe composition with spherical particles from 15 to 50 microns and tungsten grain size 0.5 3 was obtained using new technological approach, developed by authors, based on plasma spheroidization granules made nanoparticles synthesized in chemical process. The possibility spheroidized process selective laser melting (SLM) has been proved. microstructure, phys...

one major branch in mathematical sciences, which recently has been given especial attention, is optimization, including various methods such as linear programming, integer programming, and dynamic programming. due to the unique characteristics of air treatment systems, specifically multistage nature of such systems, dynamic programming has been widely applied. the purpose of this paper is to fi...

ports are the most important economic, political and military bottlenecks. this puts shoreline structures (port) in the class of important structures and they have a crucial role in the countries’ life. pile and deck wharf and their access bridges and offshore deck (jetties), are one of the parts which are supplier of coupling between the land and the waterfront. correct and exact estimation of...