Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Bifurcation (1)
- Brightness (1)
- CdO;PbO composite (1)
- Chaos (1)
- Chua (1)
-
- Contrast (1)
- Correlation (1)
- Covid-19. unSupervisors classification (1)
- CuFe2O4 (1)
- Cupric Oxide (1)
- Current density (1)
- Diffraction patterns (1)
- Egg Shell (1)
- Entropy (1)
- Equiliprium point (1)
- Fe2O3 (1)
- Finite Element Method (1)
- Glass substrate (1)
- Heat capacity (1)
- Liquid crystal (LC) (1)
- Lorenz (1)
- Magnetic properties (1)
- Mechanical properties (1)
- PLD (1)
- Photonic crystal fibers (PCFs) (1)
- Polypropylene (1)
- Pulsed laser deposition (1)
- RF Magnetron Sputtering (1)
- Refractive Index (n) (1)
- Skewness (1)
Articles 1 - 9 of 9
Full-Text Articles in Physics
The Refractive Index Of Photonic Crystal Fibers As A Function Of Some Parameters And Temperature, Mohammed Altaie
The Refractive Index Of Photonic Crystal Fibers As A Function Of Some Parameters And Temperature, Mohammed Altaie
Al-Qadisiyah Journal of Pure Science
Photonic crystal fibers in the late period occupied a wide range of studies and research because of the ease of dealing with them in terms of design and installation, as there is a group of parameters used in them that can affect the refractive index of the pulse propagation through it, including the diameter of the air holes, the distance between the air holes and their number, as this study showed in addition to the aforementioned parameters The effect of temperature on the refractive index was also studied. It has been observed that with an increase in the diameter of …
Effect Of Annealing On The Structural, Surface Morphology And Optical Properties For Cdo:Pbo Composite Thin Films, Rasha Hamid Ahmed, Maad Mohammed Ameen
Effect Of Annealing On The Structural, Surface Morphology And Optical Properties For Cdo:Pbo Composite Thin Films, Rasha Hamid Ahmed, Maad Mohammed Ameen
Al-Qadisiyah Journal of Pure Science
Thin films of pure cadmium oxide films (CdO) and composite with lead oxide (PbO) at different atomic ratios were prepared by pulsed laser deposition under vacuum usingpulsed laser of ND-YAG from CdO and CdO:PbO targets. The prepared thin films were characterized by different technique before and after annealing. The X-ray diffraction shows polycrystalline structures of cubic CdO phase convert tosample of mixed phases for composites. The AFM images illustratedecreasing the particle diameter and increasingsurface roughness with increasing the PbO ratio in composite. While, annealing cause to increase the particle size and reduce roughness. The optical absorbance increased with the PbO …
Quantitative And Qualitative Comparison Study Between Classification Methods On Normal And Abnormal (With A Coronavirus ) Lung Images, Hala Kadhim Hasan, Ayad A. Al-Ani, Noor Z. Al-Khazraji
Quantitative And Qualitative Comparison Study Between Classification Methods On Normal And Abnormal (With A Coronavirus ) Lung Images, Hala Kadhim Hasan, Ayad A. Al-Ani, Noor Z. Al-Khazraji
Al-Qadisiyah Journal of Pure Science
Classification is concerned with establishing criteria that can be used to identify or distinguish different populations of objects that appear in images. In this paper Supervised and unsupervised classification method applied on normal, abnormal (with a coronavirus) ct- lung images (which it took from Al shaikh zaeid Hospital) to study the quantitative and qualitative properties of these two categories. The analysis of performance with default quantitative parameters revealed that (kurtosis, skewness, entropy, Stander deviation (STD), mean). We found that: Qualitative (as seen) of abnormal lung images after applying Supervisors classification are better than the qualitative of abnormal lung images after …
Applying Many Of The Methods To Synchronization Of Chaoson The Electronic Circuit Chaotic From Type Memductance, Abo-Talib Y. Abbas
Applying Many Of The Methods To Synchronization Of Chaoson The Electronic Circuit Chaotic From Type Memductance, Abo-Talib Y. Abbas
Al-Qadisiyah Journal of Pure Science
the attractor chaotic from the type Chua’ attractors, was obtained at study one types of electronic circuit chaotic affiliate for family Chua’ circuit, where, the nonlinear part from type memductance, after we succeeded in found the attractor chaotic for circuit, we study many from the methods of synchronization chaos. It was the first method is Pecora and Carroll (PC), but it failed to reach for case complete synchronization, because the ratio of error not equal zero. The same as of result can reach for it, when we applying the method of adaptive-observer, at choose the value of feedback gain c=10. …
The Structural, Magnetic, And Optical Properties Of Cu1-Xcoxfe2o4 Spinel Ferrite And Its Applications, Saleem Hamza Trier, Mohammed Sami Abdali
The Structural, Magnetic, And Optical Properties Of Cu1-Xcoxfe2o4 Spinel Ferrite And Its Applications, Saleem Hamza Trier, Mohammed Sami Abdali
Al-Qadisiyah Journal of Pure Science
In this paper, the nanoparticles of the spinel ferrite (Cu1-xCoxFe2O4) 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 …
Egg Shell Powder Reinforced Polypropylene (Pp)Composite: Effect Of Mechanical And Heat Capacity, Shaymaa H. Jasim, Wisam A. Radhi Alhassan, Ziyad T. Almalki
Egg Shell Powder Reinforced Polypropylene (Pp)Composite: Effect Of Mechanical And Heat Capacity, Shaymaa H. Jasim, Wisam A. Radhi Alhassan, Ziyad T. Almalki
Al-Qadisiyah Journal of Pure Science
The mechanical properties of Polypropylene (PP): Egg Shell powder composite was assessed with respect to the effect of filler content shells powder Egg varying from 1% to 10% by weight of the composite. Apparent amelioration in the mechanical parameters has recorded best ratios 5% and 7% weight. The mechanical properties of prepared film have examined through diverse parameters concerning the elastic deformity based on calculated the load – elongation properties. The conduct of the stress - strain curve was investigated in terms of the cold drawing model. The elastic behavior decreased at 5% composite Egg Shell powder. The specific heat …
Optical Patterns Controlled By Computerized Spatial Light Modulator, Hayder A. Naser
Optical Patterns Controlled By Computerized Spatial Light Modulator, Hayder A. Naser
Al-Qadisiyah Journal of Pure Science
In this work, a contemporary optical system is designed using a technology of spatial light modulator (SLM). This system is depending on the ability of altering light beam into different optical patterns according to a signal feedback injected computationally to the SLM. The effects of control parameters on the SLM operation are studied such us brightness (B) which determines the constant DC voltage applied to SLM pixels, and contrast (C) determines the maximum AC voltage amount that can be applied to the SLM. The influences of the transmission linearity of image intensity are controlled by the gamma adjustment which can …
Structural Behavior Of Rf Magnetron Sputtered Cupric Oxide (Cuo) Films, Ali Nadhim Khilkhal, Abdalhussain A. Khadayeir
Structural Behavior Of Rf Magnetron Sputtered Cupric Oxide (Cuo) Films, Ali Nadhim Khilkhal, Abdalhussain A. Khadayeir
Al-Qadisiyah Journal of Pure Science
In this paper a CuO thin film, has been deposited using RF sputtering technique, then the thin film has been characterized by XRD, result obtained showed that strongest peak was 48.6503 degree, and FWHM was 0.145 degree, while lattice constant was 4.65 Aº, and the average grain size was 62.78 nm. While AFM analysis showed that the increasing of another four samples temperature led to increase of roughness average from (3.77 to 15.7) nm, root mean square from (4.66 to 18.8) nm and ten points height from (22.6 to 52.6) at 250,300,350 and 400 C respectively. On the other hand …
Study The Current Density-Voltage (J-V) Characteristics Of Α-Fe2o3thin Film Prepared By Spray Pyrolysis Technique, Mohammed Sami Abd Ali, Ahmed Shaker Hussein, Hayder Mohammed Hadi
Study The Current Density-Voltage (J-V) Characteristics Of Α-Fe2o3thin Film Prepared By Spray Pyrolysis Technique, Mohammed Sami Abd Ali, Ahmed Shaker Hussein, Hayder Mohammed Hadi
Al-Qadisiyah Journal of Pure Science
In this work was measured characteristics (current - voltage) for the (fe2o3 )thin films . The characteristics of the current density-voltage(J-V) were calculated at in both dark and light (100 mw/cm2) conditions. The parameters for this research of the photovoltaic samples, that is, were obtained directly from the curves of the resulting characteristics on the basic variables for the solar cell: the short circuit current density (Jsc ( , saturation current (Jo ), open-circuit voltage (Voc) , fill factor ( FF), and efficiency of solar energy conversion (yield) ƞ ,