Print ISSN: 1681-6900

Online ISSN: 2412-0758



Research Paper

Improvement of Harris Algorithm Based on Gaussian Scale Space

Abdul Amir A. Karim; Rafal A. Sameer

Engineering and Technology Journal, 2019, Volume 37, Issue 1B, Pages 1-5
DOI: 10.30684/etj.37.1B.1

Features is the description of the image contents which could be corner, blob or edge. Corners are one of the most important feature to describe image, therefore there are many algorithms to detect corners such as Harris, FAST, SUSAN, etc. Harris is a method for corner detection and it is an efficient and accurate feature detection method. Harris corner detection is rotation invariant but it isn’t scale invariant. This paper presents an efficient harris corner detector invariant to scale, this improvement done by using gaussian function with different scales. The experimental results illustrate that it is very useful to use Gaussian linear equation to deal with harris weakness.

Synthesis, Characterization and Antibacterial activities of Uracil and Uracil–Oxalate Complexes with Cr(III) and Fe(III)

Shatha M.H. Obaid

Engineering and Technology Journal, 2019, Volume 37, Issue 1B, Pages 6-16
DOI: 10.30684/etj.37.1B.2

New complexes of the some trivalent transition metal ions of the uracil such as [M(Ura)3Cl3] and mixed ligand metal complexes with uracil and oxalic acid [M(Ura)2(OA)(OH2)Cl].H2O type, where (Ura)=Uracil, (OA= Oxalic acid dihydrate, (M= Cr+3 and Fe+3) were synthesized and characterized by the elemental analysis, FT.IR, electronic spectra, mass spectra and magnetic susceptibility as well as the conductivity measurements. Six–coordinated metal complexes were suggested for the isolated complexes of Cr+3 and Fe+3 with molecular formulas dependent on the nature of uracil and oxalic acid present. The proposed molecular structure for all complexes with their ions is octahedral geometries. The antibacterial efficiency was tested of metal salts, ligands and metal complexes to the pathogenic bacteria activity have been studied.

Morphological and Optical Properties of Porous Silicon

Mohammed S. Mohammed; Ruqaya A. Shlaga

Engineering and Technology Journal, 2019, Volume 37, Issue 1B, Pages 17-20
DOI: 10.30684/etj.37.1B.3

In this work photo-electrochemical etching was used to synthesize uniform and non-uniform macro porous silicon from n-type with orientation (100). Specimens were anodized in a sol of 25% HF: C2H2OH at 1:1 rate. Morphology and porosity of the samples were studied. Optical characteristics (reflection and photoluminescence) of PS samples by changing current density (10, 12, 14 and 16 mA/cm2 ) for fixed etching time (8min) and power density (17mW/cm2 ) by using red laser illumination wavelength (645nm) were investigated. Porous silicon samples imaged via scanning electron microscope (SEM), which showed the topography of silicon surface and pores distribution.

Preparation and Study the Structure of Pure and Impure Barium Titanate with Zr4+ Ion

Mojahid M. Najim; Wasan A. Hekmat

Engineering and Technology Journal, 2019, Volume 37, Issue 1B, Pages 21-24
DOI: 10.30684/etj.37.1B.4

In this research, pure and impure barium titanate with Zr4+ ion with two molar ratios x= (5, 10) % have been synthesized by solid-state reaction technique. The powders calculations at two temperatures (950°C and 1400°C). An XRD technique was used in order to study the crystal structure of pure and impure barium titanate, which confirmed the formation of the tetragonal phase of BaTiO3, then calculate the lattice parameters of pure and impure barium titanate, the addition of zirconium ion Zr4+ lead to increases lattice parameters.

Properties of Fuzzy Closed Linear Operator

Jehad R. Kider; Noor A. Kadhum

Engineering and Technology Journal, 2019, Volume 37, Issue 1B, Pages 25-31
DOI: 10.30684/etj.37.1B.5

In this paper we recall the definition of fuzzy norm of a fuzzy bounded linear operator and the fuzzy convergence of sequence of fuzzy bounded linear operators in order to prove the uniform fuzzy bounded theorem and fuzzy open mapping theorem. The definition of fuzzy closed linear operators on fuzzy normed spaces is introduced in order to prove the fuzzy closed graph theorem.