Nada E.Omer is an associate professor of physics at Uninersity of Dammam,KSA. Regarding her work; teaching and supervision of research for undergraduate and graduates students in the field of physics and doing researches using available computer software in material sciences as well as doing experimental tresearch on nanoparticle synthesis and its medical applications as well as energy applications.
Green nanoparticle synthesized need to be incorporated into nanotechnologies at the source along with medical applications. This work scopes in the context of potential health effects of nanoparticles. Gold nanoparticles were synthesized using biomaterial mix of Olea europaea fruit and Acacia nilotica extracts, Sivler and Titania nanoparticles were synthesized using Lupin bean extract. The formation of the particles was characterized by x-ray Diffraction followed by Zitasizer for measured particles average size 10-100 nm. Energy-dispersive spectrometer (EDS) equipped with scanning electron microscopy illustrated the morphology and elemental analysis for the nanoparticles. Different shapes for the nanoparticles were examined by Transmission electron microscopy (TEM). The three ecofriendly green synthesized Au, Ag, and Tio2 nanoparticles have shown efficient antibacterial effect towards both Gram-positive and Gram-negative strain which can be very promising for wide variety of applications in nanomedicine.
Mehdi Mehdi is a PhD candidate from the University of Windsor. His education includes a BSc (Hons) in Physics and Mathematics, a MASc in Physics and currently in his final year of PhD studies in Engineering Materials. His research interests include corrosion science (Mg and Al alloys), tribology (Titanium alloys), soft magnetic materials (Si-Fe alloys), recrystallization phenomena and texture analysis. He is also interested in texture simulations, mathematical modeling and magnetic measurements using Barkhausen noise (MBN) and Epstein frame. He has been a researcher at Canmet Materials (Natural Resources Canada since 2015). My other interests include teaching engineering, physics and math. I have been doing that for the past 7years at the University of Windsor and with The Princeton Review.
Non-oriented electrical have found many applications in the industry such as electric motors and generators in order to improve the efficiency of electrical energy to mechanical energy conversion. The magnetic properties of non-oriented electrical steels are high dependent on the overall texture of the material. Thus in order to enhance the <001>//ND texture (the θ fibre) and suppress the unfavourable <111>//ND (γ-fiber) and <110>//RD (α-fiber) an unconventional cold rolling scheme was used in this investigation, in which the cold rolling direction was conducted at various angles relative to the hot rolling direction. This cold rolling scheme is referred to as “skew rolling”, and has shown great potential in enhancing texture in our previous researches. In this investigation three Si Steel samples were hot rolled down to 2.5 mm and then annealed for 60 hours at 850 °C. The samples were then cold rolled at three different directions (i.e. 0o, 22.5o and 45o) relative to HRD to a thickness of 1.25 mm (50% reduction) in 5 passes. This step was followed by an intermediate annealing for 10 minutes at 750 C°. The samples were then rolled to a final thickness of 0.5 mm in 5 passes. A final annealing was carried out at 750 °C for 1 hour. The textures were characterized by electron backscatter diffraction (EBSD) technique at various stages during the processing. The effect of intermediate annealing combined with skew cold rolling on texture evolution was noted.