http://qu.edu.iq/journalsc/index.php/JOPS/issue/feed Al-Qadisiyah Journal Of Pure Science 2020-05-29T17:27:54+00:00 Al-Qadisiyah Journal Of Pure Science scijou@qu.edu.iq Open Journal Systems <h2 style="text-align: center;"><span style="text-decoration: underline;"><em><strong>Scientific journal published by the college of science</strong></em></span></h2> <p style="text-align: center;"><em><strong>Is quarterly&nbsp; scientific peer reviewed journal published by the College<br><em><strong>of science - University of Al-Qadisiyah</strong></em></strong></em></p> <h2 style="text-align: center;">&nbsp;</h2> <p style="text-align: center;">&nbsp;</p> http://qu.edu.iq/journalsc/index.php/JOPS/article/view/1115 Some fixed point theorems in n-normed spaces 2020-05-16T20:56:59+00:00 Hanan Sabah Lazam sabahhanan68@gmail.com Salwa Salman Abed salwaalbundi@yahoo.com <p>In this article, we recall the definition of a real <em>n-</em>normed space and some basic properties. fixed point theorems for types of Kannan, Chatterge, Zamfirescu, -Weak contraction and&nbsp; - (,)-Weak contraction mappings in &nbsp;Banach spaces.</p> 2020-05-14T00:00:00+00:00 Copyright (c) 2020 Salwa Salman Abed http://qu.edu.iq/journalsc/index.php/JOPS/article/view/1118 Temperature-Dependent Viscosity Effect on the Peristaltic Transport of (MHD) blood flow Ree-Eyring Fluid Through Porous Medium in an Inclined Asymmetric Channel 2020-05-16T20:56:54+00:00 Rasha Yousif rashamath80@yahoo.com Hayat Adil Ali 100048@uotechnology.edu.iq <p style="margin: 0px; text-align: justify; line-height: normal; unicode-bidi: embed; direction: ltr;"><span style="margin: 0px; font-family: 'Times New Roman','serif'; font-size: 12pt;"><span style="margin: 0px;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>In this article the peristaltic transport of blood flow Ree</span><span style="margin: 0px; font-family: 'Times New Roman','serif'; font-size: 12pt;">-Eyring electrically conducting fluid in a porous medium under the effect of magnetohydrodynamic</span><span style="margin: 0px; font-family: 'Times New Roman','serif'; font-size: 12pt;"> and temperature dependent viscosity through asymmetric channel is examined. Governing flow problem based on momentum, and energy equations are mathematically modelled and investigated in a wave frame of reference moving with the velocity of the wave, by considering the assumption of long wavelength approximation compared to small Renold’s number they simplified and reduced into couple partial differential equations. Exact solution for the temperature profile has been obtained whereas perturbation method employed to find the approximate solution for the stream function. The impact of <span style="margin: 0px;">&nbsp;</span><span style="margin: 0px;">&nbsp;</span>important physical pertinent parameters on flow phenomena are discussed graphically. The graphs depict that the dimensionless viscosity parameter has mixed effect on velocity profile moreover the two Ree-Eyring fluid parameters </span> <span style="margin: 0px; font-family: 'Times New Roman','serif'; font-size: 12pt;"><span style="margin: 0px;">&nbsp;</span>and </span> <span style="margin: 0px; font-family: 'Times New Roman','serif'; font-size: 12pt;"><span style="margin: 0px;">&nbsp;</span>has opposite influence on velocity profile. </span></p> 2020-05-15T00:00:00+00:00 Copyright (c) 2020 Rasha Yousif, Hayat Adil Ali http://qu.edu.iq/journalsc/index.php/JOPS/article/view/1096 On Semi Feebly Open Set and its Properties 2020-05-29T17:27:54+00:00 Raad Aziz Hussan Al-Abdulla raad.hussain@qu.edu.iq . Othman Rhaif Madlooi Al-Chrani othmanr706@gmail.com <p>In this research, we presented a new Style of sets named semi-feebly open sets that were studied and identified some of its properties and found relationships with other sets where we obtained some results that show the relationship between sets through theories that were obtained using the set from Style ( -open).</p> 2020-05-29T14:28:52+00:00 Copyright (c) 2020 Raad Aziz Hussan Al-Abdulla, . Othman Rhaif Madlooi Al-Chrani http://qu.edu.iq/journalsc/index.php/JOPS/article/view/1122 The structural, magnetic, and optical properties of Cu1-xCoxFe2O4 spinel ferrite and its applications 2020-05-23T09:50:09+00:00 Saleem Hamza Trier 1967saleemhamza@gmail.com Mohammed Sami Abdali mohammed.sami68@yahoo.com <p>&nbsp;&nbsp;&nbsp;&nbsp; In this paper, the nanoparticles of the&nbsp; spinel ferrite (Cu<sub>1-x</sub>Co<sub>x</sub>Fe<sub>2</sub>O<sub>4</sub>) were prepared using the sol-gel method at a calcined temperature of 600 °C for 6 hours at the cobalt content (x = 0, 0.3, 0.5). The XRD analysis of the nanoparticles confirmed the formation of a tetragonal spinel structure free of unwanted phases , single-phase and transform into a cubic spinel structure when cobalt content ratio (x = 0.5). The crystalline size and lattice constants increase with increasing cobalt content there was a significant increase in the density of x-rays when the crystal structure turned into a cubic system. SEM images showed that spherical nanoparticles of pure copper ferrite films were distributed of regularly over a substrate of glass&nbsp; their crystalline size (62.25-60.0) nm, and their crystalline size&nbsp; decreased to (31.25 - 33.33) nm ,and their accumulation increases when proportion of cobalt content(x = 0.5). EDX established that nanosamples contained the elements&nbsp; Fe, Mg, Co, and O, and that there were no additional elements, and when the proportion of cobalt content increased (x = 0.5), the iron ions decreased at the tetrahedral site A. The magnetic properties of the copper ferrite&nbsp; powder were studied using the (VSM), and it was noted that the tetragonal system shifted to a cubic system when the ratio of the cobalt content (x = 0.5). The significant increase in magnetic parameters (Ms, Mr and n<sub>B</sub> (m<sub>B</sub>)) and the tightness of the hysteresis loop make it a soft magnetic material, so it can be used in high frequency magnetic equipment. The properties of optical the membranes prepared by UV-Is&nbsp; spectroscopy were studied and showed high transmittance at the percentage of cobalt content (x = 0.5) between (80-90)% in the visible and infrared region. At the ratio (x = 0.5) the energy gap and the dielectric constant increase, making it useful for devices photodetector and gas sensors.</p> 2020-05-23T02:14:15+00:00 Copyright (c) 2020 Saleem Hamza Trier, Mohammed Sami Abdali