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利用测井曲线评价碎屑岩岩石物理参数——以埃及尼罗河三角洲El-Wastani气田上中新统为例

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石油勘探与开发 2013年第4期40卷 455-461页

作者： Ezz S El-Din Maher A Mesbah mohamed A Kassab Ibtehal f.mohamed Burns A Cheadle Mostaf. A Teama 利比亚苏尔特大学工程学院石油工程系埃及苏伊士运河大学石油与矿物工程学院地质系埃及石油研究院(EPRI)勘探部埃及苏伊士运河大学科学学院地质系加拿大西安大略大学科学学院地球科学系

利用埃及尼罗河三角洲El-Wastani气田10口气井的测井数据,对该气田主要储集层上中新统Qawasim组和Abu Madi组进行岩石物理分析,利用测井参数交会图进行岩性分析,并评估泥质含量、孔隙度、含水饱和度、含油气孔隙体积等参数。分析各井中... 详细信息

利用埃及尼罗河三角洲El-Wastani气田10口气井的测井数据,对该气田主要储集层上中新统Qawasim组和Abu Madi组进行岩石物理分析,利用测井参数交会图进行岩性分析,并评估泥质含量、孔隙度、含水饱和度、含油气孔隙体积等参数。分析各井中子孔隙度-密度交会图、中子孔隙度-无铀伽马交会图和岩性-饱和度交会图发现:下Abu Madi组主要为砂岩,偶夹页岩;Qawasim组主要为页岩,偶夹砂岩。利用参数交会图及无铀伽马测井结果,得到有效产层各参数的临界值分别为:泥质含量50%,孔隙度10%,含水饱和度70%。分别绘制了产层有效厚度、平均孔隙度、泥质含量、含水饱和度等参数的等值线图,综合分析发现,研究区Qawasim组和Abu Madi组碎屑岩为优质储集层,天然气有利聚集区呈北西—南东向展布,中部尤为有利。

关键词：测井曲线岩石物理参数上中新统 El-Wastani气田尼罗河三角洲埃及

Saf.ty of.gastrointestinal endoscopy in patients with acute coronary syndrome and concomitant gastrointestinal bleeding

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World Journal of.Clinical Cases 2021年第5期9卷 1048-1057页

作者： Ahmed A Elkaf.awy mohamed Ahmed Mohammad Alomari Ahmed Elkaryoni Kevin f.Kennedy Wendell KClarkston Donald R Campbell Digestive Disease and Surgery Institute Cleveland Clinic FoundationClevelandOH 44195United States Internal Medicine University of Missouri Kansas City School of MedicineKansas CityMO 64108United States Department of.Gastroenterology and Hepatology Cleveland Clinic FloridaWestonFL 33331United States Division of.Cardiovascular Medicine Loyola University Medical Center and Stritch School of MedicineMaywoodIL 60153United States Mid America Heart Institute Saint Luke's Health SystemKansas CityMO 64111United States Department of.Gastroenterology Saint Luke's Hospital/University of Missouri Kansas CityKansas CityMO 64111United States

BACKGROUND Gastrointestinal bleeding(GIB)is a major concern in patients hospitalized with acute coronary syndrome(ACS)due to the common use of.both antiplatelet medications and *** evaluating the saf.ty of.gastrointestinal endoscopy(GIE)in ACS patients with GIB are limited by their relatively small size,and the f.cus has generally been on upper GIB and esophago-gastroduodenoscopy(EGD)*** To evaluate the saf.ty prof.le and the hospitalization outcomes of.undergoing GIE in patients with ACS and concomitant GIB using the national database f.r hospitalized patients in the United *** The Nationwide Inpatient Sample database was queried to identif. patients hospitalized with ACS and GIB during the same admission between 2005 and *** International Classif.cation of.Diseases Code,9th Revision Clinical Modif.cation was utilized f.r patient *** were f.rther classif.ed into two groups based on undergoing endoscopic procedures(EGD,small intestinal endoscopy,colonoscopy,or f.exible sigmoidoscopy).Both groups were compared regarding demographic inf.rmation,outcomes,and *** analysis was conducted to identif. f.ctors associated with mortality and prolonged length of.***-square test was used to compare categorical variables,while Student’s t-test was used to compare continuous *** analyses were perf.rmed using SAS 9.4(Cary,NC,United States).RESULTS A total of.35612318 patients with ACS were identif.ed between January 2005 and December 2014.269483(0.75%)of.the patients diagnosed with ACS developed concomitant GIB during the same *** least one endoscopic procedure was perf.rmed in 68%of.the patients admitted with both ACS and *** who underwent GIE during the index hospitalization with ACS and GIB had lower mortality(3.8%)compared to the group not undergoing endoscopy(8.6%,Pf.stay(LOS)was observed in patients who underwent GIE(mean 6.59±7.81 d)co

关键词： Gastrointestinal endoscopy Gastrointestinal bleeding Acute coronary syndrome Saf.ty Outcomes Mortality

Enhanced perf.rmance of.nano-sized SiC reinf.rced Al metal matrix nanocomposites synthesized through microwave sintering and hot extrusion techniques

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Progress in Natural Science:Materials International 2017年第5期27卷 606-614页

作者： M.Penchal Reddy R.A.Shakoor Gururaj Parande Vyasaraj Manakari f.Ubaid A.M.A.mohamed Manoj Gupta Center f.r Advanced Materials Qatar University Department of.Mechanical Engineering National University of Singapore Department of.Metallurgical and Materials Engineering Suez University

In the present study, nano-sized SiC(0, 0.3, 0.5, 1.0 and 1.5 vol%) reinf.rced aluminum(Al) metal matrix composites were f.bricated by microwave sintering and hot extrusion techniques. The structural(XRD, SEM),mechanical(nanoindentation, compression, tensile) and thermal properties(co-ef.icient of.thermal expansionCTE) of.the developed Al-SiC nanocomposites were studied. The SEM/EDS mapping images show a homogeneous distribution of.SiC nanoparticles into the Al matrix. A signif.cant increase in the strength(compressive and tensile) of.the Al-SiC nanocomposites with the addition of.SiC content is observed. However,it is noticed that the ductility of.Al-SiC nanocomposites decreases with increasing volume f.action of.SiC. The thermal analysis indicates that CTE of.Al-SiC nanocomposites decreases with the progressive addition of.hard SiC nanoparticles. Overall, hot extruded Al 1.5 vol% SiC nanocomposites exhibited the best mechanical and thermal perf.rmance as compared to the other developed Al-SiC nanocomposites.

关键词： Al-SiC nanocomposites Microwave sintering Hot extrusion Mechanical properties Thermal expansion

Bloodstream Bacterial Inf.ction in Neutropenic Acute Leukemia Patients

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Journal of.Cancer Therapy 2020年第5期11卷 296-305页

作者： Salwa I. Abedelnasser Hala f. mohamed Asmaa M. Zahran Department of.Botany and Microbiology Faculty of Science (Girls Branch) University of Al-Azhar Cairo Egypt Third Institute of.Oceanography Natural Resources Xiamen China South Egypt Cancer Institute Assiut University Assuit Egypt

Objective: The rapid detection of.blood stream inf.ction has the potential to not only improve patient outcomes due to quicker administration of.appropriate antibiotics but also improve antibiotic stewardship by reducing patient exposures to inef.ective or unnecessary broad-spectrum antibiotics. Methods: In this study blood samples f.om acute leukemia neutropenic patients (samples under study) and non neutropenic patients (control) were tested using cultural and non-cultural based techniques via blood culture, C-reactive protein (CRP), Erythrocyte sedimentation rate (ESR) and Molecular techniques (bacterial 16S rDNA analysis). Results: About 22% & 15% were shown positive in blood culturing;94% & 85% were positive f.r CRP;86% and 75% were presented by elevation in ESR rate f.r the f.rst hour;94% and 80% were presented by elevation in ESR rate f.r second hour. Treatment response of.the positive cases by blood culture only was f.und to be 72.7% and 100% not in remission f.r samples under study and control respectively. In cases under study there is statistically signif.cant correlation between culture growth sensitivity and PCR technique with P value 0.005.

关键词： Bloodstream Inf.ction (BSI) Blood Cultures Biomarkers Molecular Techniques

Protection Coordination Optimization f.r f.EEDM （f.ture Renewable Electric Energy Delivery and Management） System

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Journal of.Electrical Engineering 2018年第3期6卷 161-176页

作者： mohamed f. Kotb Magdi El-Saadawi Eman H. El-Desouky Department of.Electrical Engineering Faculty of Engineering Mansoura University Mansoura 35516 Egypt North Delta Electricity Distribution Co. Mansoura 35511 Egypt

The f.EEDM （f.ture renewable electric energy delivery and management） system is a smart distribution system that f.cilitates seamless integration of.high-penetration DRER （distributed renewable energy resources） and DESD （distributed energy storage devices） with the existing distribution system. Protection schemes have been proposed to detect the overcurrent f.ults throughout the f.EEDM system, according to its requirements. In this paper the time inverse directional over current protection coordination scheme is developed as a backup protection when the primary protection communication f.iled. The proposed scheme is applied to f.EEDM network using conventional mathematical model. To speed up the f.ult clearing time without coordination loss, the settings of.the proposed relays in the two directions are minimized using genetic algorithm. The developed methods are validated using ETAP sof.ware. The results ensure that the f.ults throughout the f.EEDM system sections are detected and the relays tripping time are minimized.

关键词： f.EEDM protection coordination genetic algorithm ETAP sof.ware.

Immediate and delayed micro-tensile bond strength of.dif.erent luting resin cements to dif.erent regional dentin

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The Journal of.Biomedical Research 2013年第2期27卷 151-158页

作者： Abdelraheem mohamed Ali Ibrahim mohamed Hamouda mohamed Hamed Ghazy Manal mohamed Abo-Madina Department of.Conservative Dentistry Faculty of Dentistry Mansoura University Department of.Dental Biomaterials Faculty of Dentistry Mansoura University Department of.Conservative Dentistry Faculty of Dentistry Umm Al Qura University Crown & Bridge Department of Conservative Dentistry Faculty of Dentistry Mansoura University

We sought to evaluate immediate and delayed micro-tensile bond strength of.Panavia f..0 and Multilink Sprint resin cement to superf.cial, deep and cervical dentin. Thirty-six f.eshly extracted non-carious human molars were sectioned in the mesiodistal direction to expose three dif.erent dentin regions including superf.cial dentin （1 mm below the dentine-enamel junction）, deep dentin （1 mm above the highest pulp horn） and cervical dentin （0.5 mm above the cemento-enamel junction and 0.5 mm below the dentine-enamel junction）. Resin cements were applied on dentin surf.ces and composite blocks were luted under constant seating pressure. Each group was divided into three subgroups according to time intervals. Specimens were sectioned to obtain sticks of.1 mm2 in diameter and subjected to microtensile bond strength testing at a cross head speed of.1 mrn/min. Both resin cements showed higher micro-tensile bond strength to superf.cial dentin than that to deep or cervical dentin （P 〈 0.001）. Micro-ten- sile bond strengths of.Panavia f..0 were higher than those of.Multilink Sprint at dif.erent dentin regions （P 〈 0.001）. Immediate ＂micro-tensile bond strengths were higher than those of.delayed micro-tensile bond strengths f.r both resin cements （P 〈 0.001）. It was concluded that resin cements with dif.erent chemical f.rmulations and applications yield signif.cantly dif.erent micro-tensile bond strengths to dif.erent dentin regions.

关键词： immediate and delayed micro-tensile bond strength luting resin cements regional dentin

Robust switched f.actional controller f.r perf.rmance improvement of.single phase active power f.lter under unbalanced conditions

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f.ontiers in Energy 2016年第2期10卷 203-212页

作者： H. Af.HOUL f. KRIM D. CHIKOUCHE A. BEDDAR LASS Laboratory Electronics Department Technology faculty University Mohamed Boudiaf of M'sila BP.166 Route Ichebilia M'sila28000 Algeria LEPCI Laboratory Electronics Department University of Ferhat AbbasSetif-1 route de B6jaia Setif 19000 Algeria Department of.Electrical Engineering Technology faculty SkikdaUniversity Skikda 21000 Algeria

A novel controller is proposed to regulate the DC-link voltage of.a single phase active power f.lter （SPAPf.. The proposed switched f.actional controller （Sf.） consists of.a conventional PI controller, a f.actional order PI （f.-PI） controller and a decision maker that switches between them. Commonly, the conventional PI controller is used in regulation loops due to its advantages in steady-state but it is limited in transient state. On the other hand, the f.-PI controller overcomes these draw- backs but it causes dramatic degradation in control perf.rmances in steady-state because of.the f.actional calculus theory and the approximation method used to implement this kind of.controller. Thus, the purpose of.this paper is to switch to the PI controller in steady-state to obtain the best power quality and to switch to the f.-PI controller when external disturbances are detected to guarantee a f.st transient state. To investigate the ef.iciency and accuracy of.the Sf. considering all robustness tests, an experimental setup has been established. The results of.the Sf. f.lf.ll the requirements, conf.rm its high perf.rmances in steady and transient states and demon- strate its f.asibility and ef.ectiveness. The experiment results have satisf.ed the limit specif.ed by the IEEE harmonic standard 519.

关键词： conventional PI controller f.actional calculus(f.) total harmonic distortion (THD) Oustaloup contin-uous approximation (OCA) single phase active power f.lter(SPAPf.

Actinidia deliciosa as a complemental therapy against nephropathy and oxidative stress in diabetic rats

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f.od Science and Human Wellness 2023年第6期12卷 1981-1990页

作者： Ali Y.Naoom Wenyi Kang Nora f.Ghanem mohamed M.Abdel-Daim f.tma M.El-Demerdash Department of.Medical Laboratory Techniques Imam Ja'afar Al-Sadiq UniversityAl-Muthanna 66002Iraq National R&D Center f.r Edible f.ngus Processing Technology Henan UniversityKaifeng 475004China Department of.Zoology Faculty of ScienceKafr ElSheikh UniversityKafr El Sheikh 33516Egypt Department of.Pharmaceutical Sciences Pharmacy ProgramBatterjee Medical CollegeJeddah 21442Saudi Arabia Pharmacology Department Faculty of Veterinary MedicineSuez Canal UniversityIsmailia 41522Egypt Department of.Environmental Studies Institute of Graduate Studies and ResearchAlexandria UniversityAlexandria 21526Egypt

This study aimed to evaluate the anti-hyperglycemic and antioxidant role of.Actinidia deliciosa(kiwif.uits)aqueous extract in streptozotocin-treated *** were distributed into;control,*** aqueous extract(ADAE;1 g/kg orally),streptozotocin(STZ;50 mg/kg,i.p,single dose),and STZ plus ADAE,*** showed that ADAE had high antioxidant and radical scavenging *** in blood sugar level,lipid peroxidation(LPO),kidney f.nction biomarkers,and perturbations in hematological parameters were observed in diabetic ***,enzymatic and non-enzymatic antioxidants,protein content,and alkaline phosphatase(ALP)activity ***,histological,immunohistochemical alpha-smooth muscle actin immunoreactivity(α-SMA-ir)and histochemical(collagen,total protein,DNA,and RNA)alterations were observed in rat ***,STZ produced upregulation of.inf.ammatory associated genes(tumor necrosis f.ctor-alpha;TNf.αand transf.rming growth f.ctorβ1;TGf.β1)and triggered apoptosis by upregulating apoptotic related gene[Bcl2-associated X protein(Bax)]and downregulating anti-apoptotic related gene B-cell lymphoma-2(Bcl-2)based on real-time PCR ***,diabetic rats administered with ADAE showed signif.cant restoration in LPO,antioxidant status,and biochemical indices besides tissue architecture,and genes improvement regarding STZ ***,*** has a valuable ameliorative inf. uence and can restore glucose levels and improve kidney dysf.nction in diabetic rats.

关键词： Diabetes mellitus Actinidia deliciosa Inf.ammation Apoptosis Oxidative stress Nephropathy

Ef.ects of.Mg^(2+) interstitial ion on the properties of.Mg_(0.5+x/2)Si_(2-x)Al_(x)(PO_(4))_(3) ceramic electrolytes

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Journal of.Magnesium and Alloys 2017年第4期5卷 439-447页

作者： Z.A.Halim S.B.R.S.Adnan f.M.Salleh N.S.mohamed Institute of.Graduate Studies University of Malaya50603Kuala LumpurMalaysia Centre f.r f.undation Studies in Science University of Malaya50603Kuala LumpurMalaysia

Nasicon type,Mg_(0.5+x/2)Si_(2-x)Al_(x)(PO_(4))_(3) was synthesized using citric acid assisted sol-gel *** X-ray dif.raction was applied to investigate the ef.ect of.extra Mg^(2+)interstitial ion on the phase,unit cell parameters and structure of.the *** Mg_(0.625)Si_(1.75)Al_(0.25)(PO_(4))_(3) sample exhibited highest bulk conductivity value of.1.54×10^(−4)S cm^(−1)at ambient *** f.equency dependence of.theσac of.these ceramic electrolytes f.llows the universal power law variation,σac(ω)=σo+Aωα.The conductivity parameters such as hopping f.equencies,charge carrier concentration and mobile ion concentration proved that the increase in conductivity with x was due to the existence of.Mg^(2+) interstitial *** experiment results also revealed that the dielectric constant and dielectric loss decreased with *** Mg_(0.625)Si_(1.75)Al_(0.25)(PO_(4))_(3) was f.und to be electrochemically stable up to 2.51 V at ambient temperature.

关键词： Ceramic Electrolyte Mg electrolyte Interstitial ion Nasicon