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X-band Region Characterization of Neoprene Rubber Reinforced Cd-Zn Ferrite Composite Material 氯丁橡胶增强Cd-Zn铁氧体复合材料的x波段表征
Journal of Kufa - Physics Pub Date : 2019-06-10 DOI: 10.31257/2018/JKP/2019/110116
F. A. Najim, Wissam Adel Hussien
{"title":"X-band Region Characterization of Neoprene Rubber Reinforced Cd-Zn Ferrite Composite Material","authors":"F. A. Najim, Wissam Adel Hussien","doi":"10.31257/2018/JKP/2019/110116","DOIUrl":"https://doi.org/10.31257/2018/JKP/2019/110116","url":null,"abstract":"","PeriodicalId":16215,"journal":{"name":"Journal of Kufa - Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88512065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Radar cross section of conducting bodies of revolution coated by dielectric layer 覆有介质层的旋转导体的雷达截面
Journal of Kufa - Physics Pub Date : 2019-06-10 DOI: 10.31257/2018/JKP/2019/110104
Rua’a Raheem Helan, Aqeel Sami Taher, Zeki Ahmed
{"title":"Radar cross section of conducting bodies of revolution coated by dielectric layer","authors":"Rua’a Raheem Helan, Aqeel Sami Taher, Zeki Ahmed","doi":"10.31257/2018/JKP/2019/110104","DOIUrl":"https://doi.org/10.31257/2018/JKP/2019/110104","url":null,"abstract":"Received: 10 MAY, 2018 Accepted: 8 JUL, 2018 Available Online: 22 JUN, 2019 In this paper, the electromagnetic (EM) scattering from conducting bodies of revolution coated by dielectric layer was calculated by using moment of method with Galerkin's approach, and applying the equivalence principle to determine the electric and magnetic currents on the surface. The mathematical analysis and the programs were checked to know the validity of the formulation by comparing our results with the published results. The computed results revealed the significant effect of the coated layer on the Radar cross section reduction with respect to the conducting body. Finally, this formulation was applied to study a proposed rocket which is more complex body than the previous shape, and calculate its radar cross section, and study of the effect of the dielectric constant and the thickness of the dielectric layer on the RCS. DIO.: http://dx.doi.org/10.31257/2019/JKP/110104","PeriodicalId":16215,"journal":{"name":"Journal of Kufa - Physics","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82285208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study the optical and structure properties of CdTe nanoparticles prepared by pulsing laser ablation in distilled water 研究了在蒸馏水中脉冲激光烧蚀法制备的CdTe纳米颗粒的光学性质和结构性质
Journal of Kufa - Physics Pub Date : 2019-06-10 DOI: 10.31257/2018/JKP/2019/110111
Raad S. Alnaily, Murtadha L. Sheqnab
{"title":"Study the optical and structure properties of CdTe nanoparticles prepared by pulsing laser ablation in distilled water","authors":"Raad S. Alnaily, Murtadha L. Sheqnab","doi":"10.31257/2018/JKP/2019/110111","DOIUrl":"https://doi.org/10.31257/2018/JKP/2019/110111","url":null,"abstract":"Article history: Received: 12 AUG, 2018 Accepted: 5 SEP, 2018 Available Online: 22 JUL, 2019 In this paper, an easy and effective method to preparation of cadmium telluride nanoparticles with high purity and concentration have been presented. CdTe nanoparticles were synthesized by pulsed laser ablation in distilled water using Q-switched Nd-YAG laser at (100 mj, 1064 nm, 10ns, 6Hz) and with various laser pulses. The absorption spectra of the CdTe nanoparticles were measured using the UV-Vis spectrophotometer, and found to be affected by concentration of nanoparticles according to the number of applied laser pulses. Formation of the pure CdTe nanoparticles is confirmed using AFM image analysis whose showed that generated CdTe nanoparticles were a spherical shape whit average size in nanoscale. The structural and morphology properties of these nanoparticles were studied using X-ray diffraction analysis and SEM micrograph. Finally, the energy dispersive X-ray spectroscopy (EDX)was employed for the elemental analysis and chemical characterization of a prepared samples, it confirmed that prepared samples was high purity and presence of Cd and Te with high ratio. DIO.: http://dx.doi.org/10.31257/2018/JKP/2019/110111","PeriodicalId":16215,"journal":{"name":"Journal of Kufa - Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83029200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of Polyurethane Based on (Resol Novolac Resin- Polyethylene Glycol) Copolymer and Their Analytical Study 树脂-聚乙二醇共聚物合成聚氨酯及其分析研究
Journal of Kufa - Physics Pub Date : 2019-06-10 DOI: 10.31257/2018/JKP/2019/110118
Maiada Abdulla Adnan
{"title":"Synthesis of Polyurethane Based on (Resol Novolac Resin- Polyethylene Glycol) Copolymer and Their Analytical Study","authors":"Maiada Abdulla Adnan","doi":"10.31257/2018/JKP/2019/110118","DOIUrl":"https://doi.org/10.31257/2018/JKP/2019/110118","url":null,"abstract":"Article history: Received: 8 JUL, 2018 Accepted: 13 NOV, 2018 Available Online: 26 JUL, 2019 Resol novolac resin was prepared by condensation of novolac resin with formalin solution in the presence of sodium hydroxide as catalyst, then new copolymer were prepared by reaction of this resin with polyethylene glycol. This new copolymer was supported on polyurethane foam as solid phase and applied to separation a mixture of Cr(III) and Cd(II) ions from aqueous solutions prior to the determination by flame atomic absorbtion spectrometry. The optimum conditions of some parameters effect on recovery of the ions such as acidity, eluent condition, shaking time, and eluent flow rate were investigated. At pH 4,5, the maximum recovery (90%) of Cd(II) by stripping with 40 ml of (1N) nitric acid ,while for Cu (11) was 80 % with 50 mL of (2N) nitric acid .On the other hand thermal stability for the prepared polyurethane was evaluated by TGA. DOI.: http://dx.doi.org/10.31257/2018/JKP/2019/110118","PeriodicalId":16215,"journal":{"name":"Journal of Kufa - Physics","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91523821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Analyzing and Quantifying Rainfall Changes in Erbil Area 1992 – 2014 Using Standard Normal Period WMO-SNP 1992 - 2014年埃尔比勒地区标准正常期WMO-SNP降水变化分析与量化
Journal of Kufa - Physics Pub Date : 2019-06-10 DOI: 10.31257/2018/JKP/2019/110106
Huner A. Khayya, A. J. Sharif, M. Crespi
{"title":"Analyzing and Quantifying Rainfall Changes in Erbil Area 1992 – 2014 Using Standard Normal Period WMO-SNP","authors":"Huner A. Khayya, A. J. Sharif, M. Crespi","doi":"10.31257/2018/JKP/2019/110106","DOIUrl":"https://doi.org/10.31257/2018/JKP/2019/110106","url":null,"abstract":"Rainfall is one of the vital climatic factors that can indicate climate change. Spatial and temporal changes of rainfall would influence runoff, soil moisture and groundwater reserves. Analysis of precipitation trends is important in studying the impacts of climate change for water resources planning and management. The present study was conducted to determine changes in the annual and seasonal total rainfall over Erbil Area region in Iraqi Kurdistan Region using 23 years (1992-2014) monthly rainfall data at three rain-gauge stations, the widely used WMO 1961 – 1990 (61 – 90) standard normal period is compared to other consecutive 30-year normal periods in detail. The results indicated that a decreasing trend varied between 11.6 mm/year at Pirmam station and 10.8 mm/year at Erbil station, and 28.0 mm/year at Makhmur station. The presence of trend in annual and seasonal rainfall series determined by the widely used WMO 1961 – 1990 (61 – 90) standard normal period which is compared to other consecutive 23-year normal periods in detail and the analysis is being made of the seasonal and annual average of rainfall in the period (1992-2014) by analyzing their deviation from the average of the SNP (1961-1990) .","PeriodicalId":16215,"journal":{"name":"Journal of Kufa - Physics","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81693910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrical characterization of thermoelectric generators based on p-type Yb0.6Co4Sb12 and n-type Fe2.0Co2.0Sb12 thermoelectric materials 基于p型Yb0.6Co4Sb12和n型Fe2.0Co2.0Sb12热电材料的热电发电机的电学特性
Journal of Kufa - Physics Pub Date : 2019-06-10 DOI: 10.31257/2018/JKP/2019/110114
Mustafa Kadhim Salman, Arshad Hmood Abd Alkadhim
{"title":"Electrical characterization of thermoelectric generators based on p-type Yb0.6Co4Sb12 and n-type Fe2.0Co2.0Sb12 thermoelectric materials","authors":"Mustafa Kadhim Salman, Arshad Hmood Abd Alkadhim","doi":"10.31257/2018/JKP/2019/110114","DOIUrl":"https://doi.org/10.31257/2018/JKP/2019/110114","url":null,"abstract":"In this study, thermoelectric power generation (TEPG) device (D) was fabricated. The device based on p-Yb 0.6 Co 4 Sb 12 and n-Fe 2.0 Co 2.0 Sb 12 , fabricated by using the solid state microwave. 8-couples of legs connected and attached to alumina substrates by Ag paste–Cu plate–Ag paste electrodes, with dimensions of 25 mm by 25 mm were used to fabricate the device. The maximum output power (P max ) and the open-circuit voltage (V oc ) was estimated based on the temperature difference (∆T) of 210 K and the hot-side temperature (T H ) of 603 K  for the module. We found the obtained open-circuit voltage (V oc ) was 18.046 mV and the maximum output power (P max ) was 12.732 μW. DIO.: http://dx.doi.org/10.31257/2018/JKP/2019/110114","PeriodicalId":16215,"journal":{"name":"Journal of Kufa - Physics","volume":"16 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72633065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study the Effect of Different Silicon Substrate Resistivities on the Photoluminescence Results 研究不同硅衬底电阻率对光致发光结果的影响
Journal of Kufa - Physics Pub Date : 2019-06-10 DOI: 10.31257/2018/JKP/2019/110109
N. Numan
{"title":"Study the Effect of Different Silicon Substrate Resistivities on the Photoluminescence Results","authors":"N. Numan","doi":"10.31257/2018/JKP/2019/110109","DOIUrl":"https://doi.org/10.31257/2018/JKP/2019/110109","url":null,"abstract":"The silicon-based electroluminescent devices are most commonly used in recent years, especially in optical equipment. The physical properties of the photoluminescence are investigated experimentally in this paper. The silicon substrate resistivity is tested dependence of the photoluminescence of porous. The formation current density of p-type and highly doped p-type silicon are studied. It is found that using 40 mA/cm 2 as a formation current density produced a large number of contributing nano crystals. The applied low current caused a weak photoluminescence intensity, and the increasing of the formation current density led to increase the contributing Nano crystallizes. For the optimum case with smaller nanocrystallite sizes, the photoluminescence intensity decreased by the fast etching process, and the high current density produced a small number of nanocrystallite sizes and very weak photoluminescence. The higher resistivity doesn’t give a higher intensity and better results in photoluminescence of used porous silicon","PeriodicalId":16215,"journal":{"name":"Journal of Kufa - Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77348871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural and Morphological Properties of Fe2O3 and TiO2:Fe2O3 Thin Films Prepared by Spray Pyrolysis Technique 喷雾热解法制备Fe2O3和TiO2薄膜的结构和形态特性
Journal of Kufa - Physics Pub Date : 2019-06-10 DOI: 10.31257/2018/JKP/2019/110105
Asia Hussein Kadhim, N. Hasan
{"title":"Structural and Morphological Properties of Fe2O3 and TiO2:Fe2O3 Thin Films Prepared by Spray Pyrolysis Technique","authors":"Asia Hussein Kadhim, N. Hasan","doi":"10.31257/2018/JKP/2019/110105","DOIUrl":"https://doi.org/10.31257/2018/JKP/2019/110105","url":null,"abstract":"Various doping percentage (1, 3 and 5 %) of titanium dioxide TiO 2 were successfully introduced into the iron oxide Fe 2 O 3 thin films obtained by spray pyrolysis technique (SPT) on a glass substrates. The effect of TiO 2 doping on structural and morphological properties of deposited thin films was studied by X-ray diffraction analysis and atomic forces microscope (AFM) respectively. XRD result showed that all samples are polycrystalline and the crystallite size decrease with increasing percentage of (TiO 2 ). All films have peaks appears at (110), (211), (101), (222), (210), (202), (312), (332), (310) and (432) planes with preferred orientation along (211). The (AFM) results shows that the grain size, roughness rate and the root mean square decreases with increasing dopant ratios .","PeriodicalId":16215,"journal":{"name":"Journal of Kufa - Physics","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81031016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesized and Characterizing of (Au@Pt) Ultra Fine Nanoparticles Prepared by Pulsed Laser Ablation in Liquids 液体中脉冲激光烧蚀制备(Au@Pt)超细纳米颗粒的合成与表征
Journal of Kufa - Physics Pub Date : 2019-06-10 DOI: 10.31257/2018/JKP/2019/110103
A. Nasria, S. Thahab, S. Hussain
{"title":"Synthesized and Characterizing of (Au@Pt) Ultra Fine Nanoparticles Prepared by Pulsed Laser Ablation in Liquids","authors":"A. Nasria, S. Thahab, S. Hussain","doi":"10.31257/2018/JKP/2019/110103","DOIUrl":"https://doi.org/10.31257/2018/JKP/2019/110103","url":null,"abstract":"Gold(Au), Platium (Pt) and Gold –Coated Platinum (Au@Pt) ultra Fine(UF) nanoparticles (NPs) were preperd by Pulsed Laser Ablation in Liquids method with (Q-switched, 1064 doubled frequency-Nd: YAG). The laser ablation of Au ,Pt metal plates and (Au@Pt) has been performed by immersing these metal plates in two different liquid deionised water (DIW) and ethanol alcohol . (PLAL) process preformed with 100 pulse energy of 700 mJ and liquid depth is 2cm. The nanoparticles of the gold element were coated with platinum(Au@Pt) in two steps. The nanotubes of the gold element were first examined and the platinum metal was then immersed in the liquid from the first step. The formation efficiency of PLAL process was quantified in term of the absorption spectrum peaks. The absorption spectra ( Pt) in DIW shows a sharp and single peak around 234nm,and (Au@Pt) shows a sharp and single peak for Au at 516nm and for Pt 221nm.The TEM images show that the nanoparticles are rather spherical in shape .While the average size for all the samples was in rang from(2-5)nm .There was an increase in size when using ethanol alcohol. Changing the way of the fluid environment is a simple and flexible way to control the size and strength of Au and Pt and (Au@Pt)","PeriodicalId":16215,"journal":{"name":"Journal of Kufa - Physics","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88107384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study Point Spread Function for Eccentric Circular Aperture with Gaussian Illumination 研究高斯光照下偏心圆孔径的点扩展函数
Journal of Kufa - Physics Pub Date : 2019-06-10 DOI: 10.31257/2018/JKP/2019/110115
Farah Mohammed Faisal, S. Hasan
{"title":"Study Point Spread Function for Eccentric Circular Aperture with Gaussian Illumination","authors":"Farah Mohammed Faisal, S. Hasan","doi":"10.31257/2018/JKP/2019/110115","DOIUrl":"https://doi.org/10.31257/2018/JKP/2019/110115","url":null,"abstract":"Article history: Received: 13 AUG, 2018 Accepted: 9 OCT, 2018 Available Online: 22 JUL, 2019 In this research we studied the effect of Gaussian filter on point spread function(PSF) for an optical system consisted of circular aperture with non-central circular obscuration with Gaussian Illumination. The study was in case present different types of first and third order aberrations, and searched to get better combination of them to made optimum balance of third order aberration with first order error to get","PeriodicalId":16215,"journal":{"name":"Journal of Kufa - Physics","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78120939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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