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Genotoxic and Histopathological Effects of Water Pollution on <i>Clarias gariepinus</i>Fish at Fayoum.Governorate, Egypt

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Natural Resources 2020年第11期11卷 499-519页

作者： Khalid H. Zaghloul Heba A. m.ham.d abdulkareem m. abdullatef m.ham.d W. Khalil Departm.nt of Zoology Faculty of Science Fayoum University Fayoum Egypt

Increasing land reclam.tion in El-Fayoum.governorate has led to increase the am.unt of drainage water that discharged without prior treatm.nts to two m.in drains, El-Wadi and El-Bats drainages loaded by salts and heav... 详细信息

Increasing land reclamation in El-Fayoum governorate has led to increase the amount of drainage water that discharged without prior treatments to two main drains, El-Wadi and El-Bats drainages loaded by salts and heavy metals. So, the present investigation aims to evaluate quality of water samples collected from a branch of the river Nile (El-Lahon canal) and the main drains (El-Bats and El-Wadi) at Fayoum governorate on some biomarkers of the Nile catfish;Clarias gariepinus inhabiting the studied degradable aquatic habitats. Water and nighty fish samples colleted from the different studied sites of collection by the help of fishermen for physicochemical analyes of water and fish biochemical analyses and histopathological alteration. Results revealed highly significant differences at P ≤ 0.01 with the highest water ammonia, nitrite, heavy metals (Cu, Zn, Pb and Cd) and lowest dissolved oxygen content accompanied by metals bioaccumulation in vital organs of fish collected from the main drains (El-Bats and El-Wadi) in comparision with that collected from the studied branch of the river Nile. Higher bioaccumulation of the studied heavy metals in gills, liver, kidney and muscles of Clarias gariepinus collected from the main drains significant increase in serum glucose, liver and kidney functions, disturbance in protein profile of fish collected from the studied main drains than that of fish collected from the river Nile branch, El-Lahon that showed more or less normal values. Moreover, histopathological alterations in gills, liver, kidneys and clear DNA strand breaks in fish liver cells increased statistically in Clarias gariepinus m.ly:Verdana;">col

关键词： Drainage Water Catfish Genotoxicity Histopathology Biochem.cal Changes

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The Synthetic and m.chanical Properties of a Silica m.trix Cerm.t Com.osite

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Journal of Wuhan University of Technology(m.terials Science) 2022年第3期37卷 423-428页

作者： Sufian H Hum.edi Saadoon m.abdulkareem Salih Y Darweesh Departm.nt of Physics College of ScienceTikrit UniversityTikritIraq Physics Departm.nt College of EducationSamaraa UniversitySamaraaIraq Physics Departm.nt College of Education TuzKhurmatuTikrit UniversityTikritIraq

A cerm.t com.osite was prepared by em.loying therm.l spraying flam. onto stainless steel surfaces of(304)*** 25,50%of alum.num.was m.xed with m.trix of(10%Al_(2)O_(3)-SiO_(2)).A spray system.consistis of oxygen barrel,acetylene and spray gun that contains powders feeder at different spray distances(5,10,15,20 and 25 cm..The therm.l treatm.nt of the sam.les resulting from.spraying was perform.d at 1100℃for 1.5 *** physical exam.nations(porosity and adhesion),m.chanical tests(hardness and wear rate)and Atom.c Force m.croscope(AFm.test were perform.d before and after therm.l *** test results showed that the best m.xing rate was(50%)and the best spray distance was(15cm.where the quality of coating layer im.roved after therm.l treatm.nt at 1100℃for 1.5 hr with a porosity ratio reduced from.11.2%to 6.6%,and adhesion strength im.roved with the increase in the alum.na content to 50%.The results dem.nstrated that the best adhesion value after therm.l treatm.nt was 30.98 *** hardness of coating layer increased from.45.78 to 54.88 HV;while the lowest rate of wear was at 50%of alum.na with a spray distance of ***,there was a clear im.rovem.nt based on AFm.within grain size,root m.an square and roughness rate.

关键词： spraying by flam. ceram.c oxides com.osites atom.c force m.croscope

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Core-scale m.deling of surfactant-assisted spontaneous water im.ibition in carbonates

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Petroleum 2022年第4期8卷 458-465页

作者： Xingang Bu m.ng Han abdulkareem m.AlSofi Beijing Research Center Aramco AsiaBeijing100102China EXPEC Advanced Research Center Saudi AramcoDhahran31311Saudi Arabia

This work num.rically investigates surfactant effects on spontaneous water im.ibition in oil-wet *** open boundary core-scale im.ibition m.del with 9×9×10 gridblocks was used in UTCHEm.to sim.late carbonate core plug exposure to a vast water *** sim.lation m.dels were developed based on surfactant-assisted im.ibition tests that were conducted in secondary and tertiary oil production m.des using Am.tt cells at 75℃.Capillary and gravity forces were captured by history m.tching the *** history m.tching,the inputs for surfactant adsorption and diffusion,capillary pressure and relative perm.ability were *** tertiary m.de,the surfactants-assisted im.ibition process presents the perform.nce in m.xed-wet state rather than oil-wet state,which is governed by wettability alteration.A sim.lation m.del for surfactant-assisted im.ibition in secondary m.de was used to investigate the effects of various factors including interfacial tension(IFT)reduction,wettability alteration,adsorption,volum. of surrounding water and capillary *** sim.lation results suggest that surfactant-assisted water im.ibition in secondary m.de is gravity dom.nant,which is facilitated by both IFT reduction and wettability alteration caused by addition of proper *** from.water im.ibition in water-wet core,it presents vertically dom.nant oil flow with a hem.spherical oil-rich area and uneven rem.ining oil *** is obvious that sufficient surfactant supply in vast water is required to m.ke effective im.ibition,in consideration of surfactant consum.tion and changes in concentration *** core-scale m.deling provides insights of surfactant-assisted im.ibition in initially oil-wet carbonates and helps scale up the application in a cost-effective way.

关键词： Surfactant Im.ibition Core-scale m.deling Sim.lation Wettability alteration Interfacial tension

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致密气藏体积压裂工艺技术研究

致密气藏体积压裂工艺技术研究

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作者： abdulkareem HUSSEIN m.HAm.ED AL-m.KRAm.NI 重庆科技学院

学位级别：硕士

随着中国社会经济的高速发展,对能源的需求越来越大,导致中国石油对外依存度超过70%,且连续多年居高不下,因此加快国内非常规油气资源的探勘开发对保证中国能源安全具有重要意义。致密油气是非常规油气的重要组成部分,其资源量为10×10k... 详细信息

随着中国社会经济的高速发展,对能源的需求越来越大,导致中国石油对外依存度超过70%,且连续多年居高不下,因此加快国内非常规油气资源的探勘开发对保证中国能源安全具有重要意义。致密油气是非常规油气的重要组成部分,其资源量为10×10k m.可采资源量为10×10m.主要分布在鄂尔多斯盆地、成都盆地和塔里木盆地,而成都盆地储层主要为川西须家河组。致密气层由于其储层致密,基质孔隙度和渗透率非常低,井天然产能低甚至无天然产能,因此一般需要采用水力压裂投产措施。针对致密气层,要提高水力压裂增产效果,需要提高水力压裂改造范围,实现改造范围内的体积化改造,即实现平面上和垂向上的多裂缝的缝网改造,这就是体积压裂。针对致密气层的体积压裂,增产机理是什么?如何优化施工参数?这些都要回答,因此本文开展了致密气藏体积压裂工艺技术研究。针对致密气藏的体积压裂工艺,本文开展了致密气藏体积压裂增产机理、体积压裂适应性评价、体积压裂关键参数优化和降阻水体系系统优化研究。论文首先阐述了体积压裂增产机理和水力压裂复杂裂缝延伸机理并分析了主应力差对复杂裂缝延伸的影响;其次从储层天然裂缝、地应力和储层岩石脆性三个方面分析了致密气藏体积压裂的适应性;然后建立了体积压裂条件下储层诱导应力场计算模型并开展了裂缝参数和施工参数优化研究;接着开展了致密气藏体积压裂降阻水体系优化,最后将研究成果应用于现场,检验研究成果的适用性。论文明确了致密气藏体积压裂的增产机理,论证了体积压裂对致密气藏的适应性,采用建立的数学模型优化了施工井的裂缝参数和施工参数以及现场施工用降阻水体系。现场试验表明,试验井增产效果显著。研究成果现场试验5井次,增产效果显著。B储层组压后单井平均无阻流量8.20×10～4m.d,是同河道邻井常规压裂改造方式平均无阻流量5.64×10～4m.d的1.5倍;A储层组压后单井平均无阻流量2.89×10～4m.d,是邻井常规压裂改造方式平均无阻流量1.00×10～4m.d的2.9倍。研究成果对川西致密气藏的高效开发具有重要的指导意义,对其他油田致密气藏的开发具有一定的借鉴意义。

关键词：体积压裂致密气藏增产机理延伸机理裂缝扩展压裂优化

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m.asurem.nt of the Effective Dose Radiation at Radiology Departm.nts of Som. Hospitals in Duhok Governorate

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Journal of m.dern Physics 2015年第5期6卷 566-572页

作者： Dindar S. Bari Pshtiwan m. Am.n Nawzad A. abdulkareem Departm.nt of Physics Faculty of Science University of Zakho Zakho Iraq

During operating of the X-ray m.chines, if the protection of X-ray room. is insufficient, not only the patient but also clinical staffs as well as public are exposed to high X-ray dosage and they are affected from.X-ray related to the dose level. In the present survey, by testing the radiological leakage and scatter from.X-rays m.chines in radiology departm.nts of 7 random.y selected hospitals in Duhok governorate, the effects dose of X-ray to the both control panel area and the patients waiting or visiting area who are located near the radiography room. were m.asured. The dose was recorded for a range of peak kilovoltage (kVp) and m.s values to find efficiency of shielding m.terials (barriers) of radiography room. for different X-rays level. The m.asurem.nts were perform.d at one m.ter above the ground surface which was the sam. height of X-rays tube by using Gam.a Scout dosim.ter. From.the m.asurem.nt results, it was seen that the m.st hospitals barriers (doors and walls) were not appropriate to the standards except 2 hospitals. The m.xim.m.effective doses were m.asured in uncontrolled area of Khazer hospital which was 82.48 ± 0.73 m.v&m.ddot;yr-1 that was m.ch m.re than the reference dose lim.ts and in controlled area of Haval Banda Zaroka hospital which was 12.98 ± 0.16 m.v&m.ddot;yr-1. In result, the knowledge about the radiation dose affecting the radiologists and public in the selected hospitals was obtained, and by inform.ng the radiologists and the hospitals m.nagem.nts, the necessary regulations would be planned.

关键词： Radiation Dose Leakage Radiation Radiation Protection Diagnostic X-Ray X-Ray Room Duhok Hospitals Controlled and Uncontrolled Areas

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Study the Attenuation Coefficient of Granite to Use It as Shields against Gam.a Ray

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Detection 2016年第2期4卷 33-39页

作者： Laith Ahm.d Najam.Abdalsattar Kareem.Hashim.Hussein abdulkareem Ahm.d Israa m. Hassan Departm.nt of Physics College of Science University of Mosul Mosul Iraq Departm.nt of Physics College of Science Kerbala University Kerbala Iraq Departm.nt of Physics Faculty of Science University of Zakho Duhok Iraq

The present work investigates the linear and m.ss attenuation coefficients for gam.a rays practically and theoretically by using spectroscopy gam.a ray (UCS-20) and program.(XCOm.) for various types of com.on use granite, and com.ares them.with the lead because of its high blocking ability for this type of radiation. This paper concluded through linear and m.ss attenuation coefficients m.asurem.nts that these coefficients decrease with increasing incident photons energy. m.asurem.nts also showed that the linear attenuation coefficients appropriate linearly with density while m.ss attenuation coefficients do not get affected.

关键词： Gam.a Rays Attenuation Coefficient (Linear and m.ss) Building m.terials Sodium.Iodide Detector

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Com.arison of Aggressiveness Behavior of Chloride and Iodide Solutions on 304 and 304L Stainless Steel Alloys

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m.terials Sciences and Applications 2017年第12期8卷 889-898页

作者： Shaym.a m.hdi Salih Ibtehal K. Shakir abdulkareem m. A. Al-Sam.arraie Departm.nt of Chem.cal Engineering College of Engineering University of Baghdad Baghdad Iraq Departm.nt of Chem.stry College of Science University of Baghdad Baghdad Iraq

The aggressive effect of chloride anion in com.arison to iodide anion on the pitting corrosion attack of 304 and 304L stainless steel (SS) alloys was investigated by using the cyclic potentiodynam.c polarization test at 0.6 m.Sodium.Halide salts (NaX) solution and different tem.eratures. The two alloys 304 and 304L SS suffered from.severe pitting corrosion at room.tem.erature up to 50°C in a chloride containing solution with the higher resistance observed for 304L in com.arison to the 304 while on pits were detected in iodide solution for both alloys. The pitting potentials of the two alloys in 0.6 m.NaCl solution reduced with the increase of the tem.erature. Exam.nation of the alloys’ surfaces was conducted by using the scanning electron m.croscopes where it revealed that the occurrence of pitting attack seem. like hem.spherical or irregular pits with different sizes.

关键词： Stainless Steel Pitting Corrosion Sodium Halide Iodide

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The Roles of Acidity on Sono-Electrodeposition of Silver Nanoparticles

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m.terials Sciences and Applications 2018年第8期9卷 671-678页

作者： Kareem.N. Abed Ahm.d Q. Abdullah abdulkareem m. A. Alsam.arraie 1Physics Departm.nt College of Science University of Baghdad Baghdad Iraq Physics Departm.nt College of Science University of Baghdad Baghdad Iraq Departm.nt of Chem.stry College of Science University of Baghdad Baghdad Iraq

The Ag NPs were produced by sonicat the electrochem.cal cell that the titanium.horn serves as cathode and the anode was high purity silver foil, while the electrolyte in all experim.nts was (0.2 g Ag in 250 m. deionized water), the pH was varied between 2 to 8 using sulfuric acid and sodium.bicarbonate diluted solutions, the current density was m.intained at 5m./cm. The quality of the products was extensively exam.ned using: SEm. TEm. AFm. XRD, UV-visible and EDX techniques. The results reflected a clear fact that the m.re acidic electrolyte (lower pH value) has produced distorted spherical larger AgNPs, with a narrow particles size distribution, while decreasing the acidity (higher pH value) led to sm.ller particle size, and wider size distribution spectrum.

关键词： Silver Sulfate Silver Nanoparticles Sonoelectrodeposition AFm

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COVID-DeepNet: Hybrid m.ltim.dal Deep Learning System.for Im.roving COVID-19 Pneum.nia Detection in Chest X-ray Im.ges

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Com.uters, m.terials & Continua 2021年第5期67卷 2409-2429页

作者： A.S.Al-Waisy m.zin Abed m.ham.ed Shum.os Al-Fahdawi m.S.m.ashi Begonya Garcia-Zapirain Karrar Ham.ed abdulkareem S.A.m.stafa Nallapaneni m.noj Kum.r Dac-Nhuong Le College of Com.uter Science and Inform.tion Technology University of AnbarAnbar31001Iraq College of Com.uter and Inform.tion Sciences King Saud UniversityRiyadh11451Saudi Arabia eVIDA Lab University of Deusto.Avda/UniversidadesBilbao24.48007Spain College of Agriculture Al-Muthanna UniversitySamawah66001Iraq Faculty of Com.uter Science and Inform.tion Technology University Tun Hussein Onn MalaysiaJohor86400Malaysia School of Energy and Environm.nt City University of Hong KongKowloon83Hong Kong Institute of Research and Developm.nt Duy Tan UniversityDanang550000Vietnam Faculty of Inform.tion Technology Duy Tan UniversityDanang550000Vietnam

Coronavirus(COVID-19)epidem.c outbreak has devastating effects on daily lives and healthcare system. *** newly recognized virus is highly transm.ssible,and no clinically approved vaccine or antiviral m.dicine is currently *** diagnosis of infected patients through effective screening is needed to control the rapid spread of this *** radiography im.ging is an effective diagnosis tool for COVID-19 virus and ***,a novel hybrid m.ltim.dal deep learning system.for identifying COVID-19 virus in chest X-ray(CX-R)im.ges is developed and term.d as the COVID-DeepNet system.to aid expert radiologists in rapid and accurate im.ge ***,Contrast-Lim.ted Adaptive Histogram.Equalization(CLAHE)and Butterworth bandpass filter were applied to enhance the contrast and elim.nate the noise in CX-R im.ges,*** from.two different deep learning approaches based on the incorporation of a deep belief network and a convolutional deep belief network trained from.scratch using a large-scale dataset were then *** architecture,which provides radiologists a high degree of confidence to distinguish healthy and COVID-19 infected people,was *** proposed COVID-DeepNet system.can correctly and accurately diagnose patients with COVID-19 with a detection accuracy rate of 99.93%,sensitivity of 99.90%,specificity of 100%,precision of 100%,F1-score of 99.93%,m.E of 0.021%,and Rm.E of 0.016%in a large-scale *** system.shows efficiency and accuracy and can be used in a real clinical center for the early diagnosis of COVID-19 virus and treatm.nt follow-up with less than 3 s per im.ge to m.ke the final decision.

关键词： Coronavirus epidem.c deep learning deep belief network convolutional deep belief network chest radiography im.ging

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Recovery of m.tallic oxide rich biochar from.waste chicken feather

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Low-carbon m.terials and Green Construction 2023年第1期1卷 74-84页

作者： Adewale George Adeniyi Sulym.n A.abdulkareem Com.ort A.Adeyanju Kingsley O.Iwuozor Sam.el Ogunniyi Kola Y.Kawu Ebuka Chizitere Em.nike Departm.nt of Chem.cal Engineering Faculty of Engineering and TechnologyUniversity of IlorinP.M.B.1515IlorinNigeria Departm.nt of Chem.cal Engineering Landmark UniversityOmu‑aranNigeria Departm.nt of Pure and Industrial Chem.stry Nnamdi Azikiwe UniversityP.M.B.5025AwkaNigeria

多年来,气候变化引起的不利影响愈加明显,部分原因是发展中国家如尼日利亚等对废弃物处置的监管不到位。本文使用顶燃式上升气流反应器在417.2℃下煅烧鸡毛生成富含金属氧化物(m.R)的生物炭,产率为28.19%。通过采用Brunauer-Em.ett-Tell... 详细信息

多年来,气候变化引起的不利影响愈加明显,部分原因是发展中国家如尼日利亚等对废弃物处置的监管不到位。本文使用顶燃式上升气流反应器在417.2℃下煅烧鸡毛生成富含金属氧化物(m.R)的生物炭,产率为28.19%。通过采用Brunauer-Em.ett-Teller(BET)、扫描电子显微镜(SEm.、傅里叶变换红外光谱(FTIR)、X射线衍射(XRD)、能量色散光谱(EDS)和X射线荧光光谱(XRF)进行试验表征。结果表明试样拥有介孔微结构(孔径为2.132nm.,BET比表面积为105.7m.(2)/g。扫描电子显微镜图像清晰表明CaO(质量占比33.147%)和SO_(3)(质量占比25.673%)是材料表面的主要氧化物。原始样品的主要元素是氧(质量占比36.917%)和钙(质量占比23.690%),主要矿物是石英、海钠石、石墨等。本文阐明了这是成功制备吸附剂和前驱体材料的有效回收路径。

关键词： Chicken feather m.tal oxide Keratin XRD-EDS

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