Muthanna Journal of Pure Science (MJPS)

Barium strontium Titanate (BST) is a solid solution consist of BaTiO3 and SrTiO3 that mixed with suitable ratio. Barium strontium Titanate oxide (Ba0.8Sr0.2TiO3) thin films prepared by sol gel technique. Barium strontium Titanate thin films deposited on Si substrate and annealed at [400,500, 600 and 700] ºC. The characterization of BST films investigated by a different technique, the X-Ray Diffraction (XRD) and Scanning Electron Macroscopy (SEM) revealed the phases, crystal structure and surface topography of the films. XRD pattern shows tetragonal phase for Ba0.8Sr0.2TiO3 perovskite structure with many peaks for different plans. The films annealed at the different temperature that indicated intermediate phases on perovskite structure of Ba0.8Sr0.2TiO3.

In this study, new azetidine [A1-A5] compounds were prepared by the reaction five of schiff bases compounds with chloroacetyl chloride in 1,4-dioxane. The prepared compounds were characterized by physical properties, UV-Vis, 1H-NMR and FT-IR spectral and C.H.N analysis. TLC checked the purity for these compounds. The antibacterial activities were studied against different kinds of bacteria, namely Staphylococcus epidermidis and Staphylococcus aureus Gram (+) ve, Eschershia coli, and Klebsiella Pneumonia Gram (-) ve. Also, evaluation of laser efficacy is shown for the compounds (A1-A5) were laser radiated to (10, 20, 30) seconds. When the melting point and color were measured, it was found that the compounds were not affected or polymerized.

Due it difficult to find applications in topological spaces, which are branches of pure mathematics. The importance of this paper is to find applications in graph theory. So, We Introduced (semi, pre, b, semi-pre)-open subgraph to graph theory. The relations among them were studied. At least many theorems were proofed as a characterization and some examples introduced to explain the subject.

Nanophotonics technology is the study of the confinement of electromagnetic fields on a subwavelength scale and surface plasmons plays a major role in advancing this arising field. They can take various forms, ranging from freely propagating electron density waves along metal surfaces to localized electron oscillations on metal nanoparticles. The interaction between the free electrons' oscillations and electromagnetic waves of light gives the surface plasmons their appealing characteristics. Their ability of light confinement and propagation through subwavelength structures grants the construction of photonic devices with minimum size, hence the characterize and design of plasmonic devices can be resolved using numerical simulation. This review starts with general introduction about Plasmonic photonic crystal fiber. This is followed by a historical background and literature review of Plasmonic PCF. Some types of designs are illustrated. Finally, the applications of Plasmonic PCF are mentioned dependent on the types of design including the circular plasmonic photonic crystal fiber technique.