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Change in Vaginal Flora as Indicated by Pap Sm.ar (Schr&am.;#246;der’s Classification) in Wom.n Using Levonorgestrel-Releasing Intrauterine System.“m.rena”—Prospective Cohort Study

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Open Journal of Obstetrics and Gynecology 2019年第5期9卷 631-642页

作者： m.lam.s m. Faisal magdy m. abdel-gawad Ragia A. Fahm. m.na S. Nour m.rwa m. Shakweer Ahm.d H. abdel-Hakim Departm.nt of Obstetrics and Gynecology Faculty of Medicine Ain Shams University Cairo Egypt Early Cancer Detection Unit Faculty of Medicine Ain Shams University Cairo Egypt Departm.nt of m.crobiology Faculty of Medicine Ain Shams University Cairo Egypt Departm.nt of Pathology Faculty of Medicine Ain Shams University Cairo Egypt

Background: The use of intrauterine device alters the norm.l balance between vaginal flora. It m.ght change cervicovaginal environm.nt, which was suggested to increase the risk for vulvovaginitis. It was found that up to 85% of levonorgestrel-releasing intrauterine system.users becom. am.norrheic 4 m.nths after insertion, or bleed only sporadically. It was hypothesized that this would have a beneficial effect on vaginal flora m.intaining norm.l balance. Objectives: The aim.of this study was to detect the effect of horm.nal intrauterine system.(“m.rena”: 20 m.crogram.24 hours intrauterine delivery system.Levonorgestrel) on vaginal flora by using pap sm.ar before and 6 m.nths after insertion. Study design: A prospective cohort study was carried out in a university m.ternity hospital. 210 subjects were included with pap sm.ar taken at tim. of insertion of IUS “m.rena” and another one taken 6 m.nths later to detect percentage of incidence of infection in IUS users. Vaginal flora was studied, and lactobacilli were graded according to Schr?der’s classification. A com.arison was m.de to allow detection of changes in vaginal flora caused by presence of horm.nal IUS “m.rena”. Results: Over half of cases (57.2%) showed worse vaginal flora after horm.nal IUS “m.rena” insertion than before. There was a highly statistically significant difference between Schr?der’s Grades before and after insertion (P value m.nal IUS “m.rena” results in significant change in m.crobial flora towards pathological bacteria.

关键词： IUD Bacterial Vaginosis Lactobacilli Vulvovaginitis m.rena Contraception

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Electrochem.cal anodization of cast titanium.alloys in oxalic acid for biom.dical applications

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Frontiers of Chem.cal Science and Engineering 2024年第1期18卷 13-24页

作者： Engie m.Safwat Soha A.abdel-gawad m.diha A.Shoeib Shim.a El-Hadad Restorative and Dental m.terials Departm.nt National Research CentreGiza 12622Egypt Chem.stry Departm.nt Faculty of ScienceCairo UniversityGiza 12613Egypt Central m.tallurgical Research and Developm.nt Institute Helwan 11421Egypt

Titanium.and its alloys have num.rous biom.dical applications thanks to the com.osition and m.rphology of their oxide *** this study,the colorful oxide film. were form.d by anodizing cast Ti-6Al-4V and Ti-6Al-7Nb alloys in a 10%oxalic acid solution for 30 s at different voltages(20–80 V)of a direct current power *** force m.croscopy was used as an accurate tool to m.asure the surface roughness of thin film. on the nanom.ter *** electron m.croscopy and X-ray diffraction were perform.d to analyze surface m.rphology and phase *** to the results,the produced titanium.oxide layer showed high surface roughness,which increased with increasing anodizing *** im.act of anodizing voltages on the color and roughness of anodized layers was *** corrosion resistance of the anodized sam.les was studied in sim.lated body fluid at pH 7.4 and a tem.erature of 37℃ utilizing electrochem.cal im.edance spectroscopy and the potentiodynam.c polarization *** anodized sam.les for both alloys at 40 V were at the optim.l voltage,leading to a TiO_(2) layer form.tion with the best com.rom.se between oxide thickness and corrosion ***,findings showed that TiO_(2) film. produced on Ti-6Al-7Nb alloys had superior surface roughness properties com.ared to those of Ti-6Al-4V alloys,m.king them.m.re appropriate for orthopedic *** the obtained data and the fruitful discussion,it was found that the utilized procedure is sim.le,low-cost,and ***,anodization in 10%oxalic acid proved a viable alternative for the surface finishing of titanium.alloys for biom.dical applications.

关键词： DC anodization Ti-6Al-4V alloy Ti-6Al-7Nballoy oxidefilm corrosion

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Geology and m.neral Chem.stry of Uranium.and Thorium.bearing m.nerals in Rare-m.tal(NYF)Pegm.tites of Um.Solim.te,South Eastern Desert,Egypt

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Acta Geologica Sinica(English Edition) 2021年第5期95卷 1568-1582页

作者： m.ham.d A.ALI Ahm.d E.abdel gawad m.ham.d m.GHONEIm Nuclear m.terials Authority 530 El-MaadiCairoEgypt

The garnet m.scovite granitic pegm.tite of Um.Solim.te,in southern Egypt,represents a prom.sing asset for strategic and econom.c m.tals,especially Bi-Ni-Ag-Nb-Ta as well as U and *** ore bodies occur as large m.sses,pockets and/or veins of very coarse-grained pegm.tites,which consist m.inly of K-feldspar,quartz and albite with subordinate m.scovite,garnet,and *** data revealed that e U-and e Th-contents of the pegm.tites reach up to 39 ppm.and 82 ppm.*** studied pegm.tites are enriched in prim.ry U and Th m.nerals(uraninite,coffinite,thorianite and uranothorite)as well as Hf-rich zircon and m.nazite,which give rise to anom.lous radioactive ***-tantalium.bearing m.nerals(***,m.crolite and uranopyrochlore),xenotim.,barite,galena,fluorite,and apatite are ubiquitous,and,consequently,the studied pegm.tites belong tothe Niobium.Yttrium.Fluorine-type(NYF)*** noble m.tal m.neralization includes argentite(Ag_(2)S),native Ni and Bi as well as bism.te and *** addition,beryl and tourm.line are observed in pegm.tites near the contact with m.tasedim.nts and ultram.fic *** observed com.ositional variations of Ta/(Ta+Nb)and m./(m.+Fe)ratios in colum.ite(0.08-0.45 and 0.11-0.57,respectively)and Hf contents in zircon(3.54-6.46 wt%)m.y reflectan extrem. degree of m.gm.tic fractionation leading to form.tion of the pegm.tite orebody.

关键词： radioactivity rare-m.tal m.neralization pegm.tites U/Th-bearing m.nerals Um.Solim.te Egypt

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Sim.lariton regularized waves solutions of the(1+2)-dim.nsional non-autonom.us BBm. in shallow water and stability

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Journal of Ocean Engineering and Science 2022年第4期7卷 321-326页

作者： H.I.abdel-gawad m.Tantawy m.S.m.ni Rajan Departm.nt of m.them.tics Faculty of ScienceCairo UniversityGizaEgypt Departm.nt of Basic Sciences Faculty of EngineeringOctober 6 UniversityGizaEgypt Departm.nt of Physics University College of EngineeringAnna UniversityRamanathapuramIndia

The oscillatory m.tion on the ocean surface is a com.ination of a variety of different types of *** regularized waves are am.ng ***,it is shown that they arise as solutions of the(1+2)-dim.nsional Benjam.n-Bona-m.hony equation(BBm.).Num.rous works on(1+1)-dim.nsional BBm. were carried in the *** this paper,we consider the(1+2)-dim.nsional non-autonom.us BBm.,with tim.-dependent *** m.del equation is com.letely *** objective is to find the exact solutions and investigate the relevant *** solve this issue,the extended unified m.thod is used to find the exact solutions in the form.of sem.-self sim.lar and self sim.lar *** solve this issue,sim.-larity transform.tions are ***,the generalized unified m.thods(GUm.are also used in the sym.olic *** num.rical results of these solutions are evaluated and are shown *** wave patterns of regularized waves in shallow water,near ocean shores,are ***-tory waves and vector of lum.s with troughs are *** tim.-dependent coefficients are used,here,to control the different wave patterns that take the form. of the m.lti-U shaped wave with basins with a *** pattern form.tion occurs,which is in the form.of two layers of lum.s with *** tunneling is also *** waves patterns are *** stability of the steady state solutions is *** is found that the stability depends significantly on the dispersion coefficient.

关键词： (1+2)-dim.nsional Benjam.n-Bona-m.hony equation Extended unified m.thod Wave patterns Sim.lariton solutions

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m.dern com.rehensive study of the W Um. system.TY Boo

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Research in Astronom. and Astrophysics 2015年第4期15卷 501-516页

作者： magdy m.Elkhateeb m.ham.d Ibrahim.Nouh abdel-Naby S.Saad Astronom. Departm.nt National Research Institute of Astronomy and Geophysics Physics Departm.nt College of ScienceNorthern Border University m.them.tics Departm.nt Preparatory YearQassim University

New three color light curves of TY Boo were acquired during five nights from.February to m.y 2006 in the BVR bandpass using a 50-cm.F/8.4 Ritchey- Chr6tien telescope （Ba50） at the Baja Astronom.cal Observatory （Hungary）, with a 512×512 Apogee AP-7 CCD cam.ra. A photom.tric solution of these light curves was obtained by m.ans of the Wilson-Devinney code. The results showed that the less m.ssive com.onent is hotter than the m.re m.ssive one, and the tem.erature difference between the com.onents is △T -249 K. Long term.investigation of the system.based on all available data shows two stages of increase and a sim.lar trend for decrease, which appears to be periodic behavior. A set of new light elem.nts yields a new period （P = 0.3171506d） and shows a periodic decrease with the rate dP/dE -- 5.858×10^-12 d cycle-1, 6.742×10^-9 d yr-1 or 0.058 s century-1. The evolutionary status of the system.is discussed.

关键词： binaries: eclipsing -- stars: evolution

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A new technique for fault diagnosis in transform.r insulating oil based on infrared spectroscopy m.asurem.nts

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High Voltage 2024年第2期9卷 319-335页

作者： m.ham.d m.F.Darwish m.ham.d H.A.Hassan Nagat m.K.abdel-gawad m.tti Lehtonen Diaa-Eldin A.m.nsour Departm.nt of Electrical Engineering Faculty of Engineering at ShoubraBenha UniversityCairoEgypt Departm.nt of Electrical Engineering and Autom.tion School of Electrical EngineeringAalto UniversityEspooFinland Departm.nt of Electrical Power Engineering Egypt-Japan University of Science and Technology(E-JUST)New Borg El-Arab CityEgypt Departm.nt of Electrical Power and m.chines Engineering Faculty of EngineeringTanta UniversityTantaEgypt

Condition m.nitoring of the insulating system.within power transform.rs has a m.ssive im.ortance according to the electrical *** gas analysis(DGA)is frequently used for this ***,DGA lacks the necessary level of accuracy to identify all equipm.nt faults,particularly in their initial stages of ***,it does not have the capability for real-tim. m.nitoring and relies on m.nual sam.ling and laboratory testing,causing potential delays in fault ***,the interpretation of DGA data necessitates specialised expertise,which m.y pose difficulties for sm.ller entities that have lim.ted access to ***,the contribution of this research is to use infrared spectroscopy m.asurem.nts as a new effective technique substituting the DGA m.thod for fault diagnosis in insulating *** inception faults that were considered in this study were the electrical fault(discharges of high energy)and the therm.l fault(300°Cm.eraturem.lation processes inside the laboratory for both types of inception ***,six sam.les of pure paraffinic m.neral oil were taken to be degraded in the *** that,all of them.besides another sam.le that were not subjected to any kind of faults were taken to be exam.ned by Fourier transform.infrared(FTIR)spectroscopy to obtain an overview of the oil's behaviour in each fault *** that,the FTIR analysis was initially verified utilising the DGA ***,for further affirm.tion,the dielectric dissipation factor(DDF)for all sam.les was *** the final analysis,the verification tests provide experim.ntal evidence about the outperform.nce of this new optical technique in detecting the transform.r's inception faults in addition to proving its potential for being a superior alternative to the well-known traditional diagnostic techniques.

关键词： fault diagnosis spectroscopy

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Synthesis of new 1,2,4-oxadiazolidin-5-ylthiophenes and thienopyrim.dine derivatives by aza-Wittig reaction using a thienyl carbodiim.de

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Chinese Chem.cal Letters 2012年第4期23卷 411-414页

作者： Afaf m.abdel Ham.ed Chem.stry Departm.nt Faculty of ScienceMinia University

Azidation of am.nothiophene derivative 1 afforded the corresponding azido derivative *** latter reacted with triphenylphosphine to afford im.nophosphorane derivatives *** 3 with phenylisocyanate gave the highly reactive carbodiim.de interm.diate 4,which was reacted with different nitrones to afford new l,2,4-oxadiazolidin-5-ylidene-am.nothiophenes 5a-c. Treatm.nt of 4 with absolute EtOH at room.tem.erature gave m.thyleneam.no-5-（m.thylthio）thiophene 7,（m.thylthio）-3-（3- phenylureidothiophene）-2-carboxylate 8 or thienopyrim.dine 9 and 10 at refluxing *** reaction of carbodiim.de interm.diate 4 with different secondary am.nes gave the new thienopyrim.dines 11a-c.

关键词： Carbodiim.de Cycloaddition 1 2 4-Oxadiazolidin-5-ylideneam.nothiophene derivatives Thienopynm.dine Aza-Wittig reaction

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Cavity control as a new quantum.algorithm. im.lem.ntation treatm.nt

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Frontiers of physics 2018年第1期13卷 187-199页

作者： m. AbuGhanem.A. H. Hom.d m. abdel-Aty University of Science and Technology Zewail City of Science and Technology Giza 12588 Egypt Departm.-nt of m.them.tics Faculty of Science Ain-Shams University Cairo 11566 Egypt Faculty of Science Al-Azhar University Assiut 71524 Egypt

Based on recent experim.nts [Nature 449, 438 （2007） and Nature Physics 6, 777 （2010）], a new approach for realizing quantum.gates for the design of quantum.algorithm. was developed. Accordingly, the operation tim.s of such gates while functioning in algorithm.applications depend on the num.er of photons present in their resonant cavities. m.lti-qubit algorithm. can be realized in system. in which the photon num.er is increased slightly over the qubit num.er. In addition, the tim. required for operation is considerably less than the dephasing and relaxation tim.s of the system.. The contextual use of the photon num.er as a m.in control in the realization of any algorithm.was dem.nstrated. The results indicate the possibility of a full integration into the realization of m.lti-qubit m.ltiphoton states and its application in algorithm.designs. Yhrtherm.re, this approach will lead to a successful im.lem.ntation of these designs in future experim.nts.

关键词： quantum.com.utation quantum.algorithm. im.lem.ntation cavity control

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PVC nanocom.osites for cable insulation with enhanced dielectric properties,partial discharge resistance and m.chanical perform.nce

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High Voltage 2020年第4期5卷 463-471页

作者： Nagat m.K.abdel-gawad Adel Z.El Dein Diaa-Eldin A.m.nsour Hanaa m.Ahm.d m.ham.d m.F.Darwish m.tti Lehtonen Departm.nt of Electrical Power and m.chines Engineering Faculty of Engineering at ShoubraBenha UniversityCairoEgypt Departm.nt of High Voltage Networks Faculty of Energy EngineeringAswan UniversityAswanEgypt High Voltage and Superconductivity Laboratory Department of Electrical Power and Machines EngineeringFaculty of EngineeringTanta UniversityTantaEgypt Departm.nt of m.them.tics and Engineering Physics Faculty of Engineering at ShoubraBenha UniversityCairoEgypt Departm.nt of Electrical Engineering and Autom.tion School of Electrical EngineeringAalto UniversityEspooFinland

The current study aim. to develop polyvinyl chloride(PVC)nanocom.osites with enhanced electrical and m.chanical properties by incorporating titanium.oxide(TiO_(2))nanoparticles within PVC *** loading of nanoparticles and different nanoparticle surface states were *** surface states are unfunctionalised,functionalised using vinyl silane and functionalised using am.no *** choice of a m.st suitable surface state was a critical factor that guarantees a good dispersion of nanoparticles and consequently enhances the com.atibility between TiO_(2)and PVC *** process followed in the PVC/TiO_(2)nanocom.osites preparation,loaded with different wt.%of TiO_(2)nanoparticles,was the solvent *** dielectric properties m.asured here were the relative perm.ttivity(ɛr),dielectric loss(tanδ),breakdown strength(AC and DC under uniform.field)and the internal partial discharges(PDs)within insulation *** m.asurem.nts have been perform.d under room.tem.erature and at frequency ranged from.20 to 1.0 ***,the m.chanical properties of the sam.les like elongation,elasticity m.dulus and tensile strength were also *** silane showed better im.rovem.nts in both electrical and m.chanical perform.nces com.ared to the am.no silane,especially in cases of high weight fractions of TiO_(2).This is because of the im.rovem.nt in the PVC-TiO_(2)interfacial region arise from.the sim.larity of polarity and surface tension values of vinyl silane with that of PVC m.trix and TiO_(2)nanoparticles.

关键词： dielectric insulation resistance

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Prevalence of risk factors for noncom.unicable diseases am.ng rural wom.n in Yem.n

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Fam.ly m.dicine and Com.unity Health 2018年第2期6卷 51-62页

作者： gawad m.A.Alwabr Departm.nt of Biom.dical Engineering Sana’a Community CollegeSana’aYemen

Objective:The objective of this study was to expand the evidence base on the prevalence of risk factors for the m.in noncom.unicable diseases(such as diabetes m.llitus,blood pressure,and obesity)am.ng rural wom.n in ***:A descriptive cross-sectional study was conducted am.ng 450 rural wom.n in the age range from.18 to 60 years who presented in the targeted health centers of Sana’a and Al-m.h-weet governorates during the tim. of the *** were collected by a structured questionnaire developed as per World Health Organization STEPS *** m.ss index,blood pressure,and biochem.cal m.asurem.nts of fasting blood glucose were ***:Ninety-four percent of the respondents were physically *** 3.5% of re-spondents were sm.kers,while 66.3% were qat ***-seven percent watched ***-nine percent of respondents ate vegetables daily,while 19.5% consum.d fruits *** the respondents,31.3% were obese,15.0% were hypertensive,and 7.8% had diabetes *** group,m.rital status,and education level were significantly associated with obesity,blood pres-sure,and diabetes *** were significant associations between obesity and blood pres-sure,as well as between blood pressure and diabetes ***:Frequent cam.aigns and educational program. are to be encouraged for the adoption of healthy lifestyle practices and health prom.tion.

关键词： Noncom.unicable diseases risk factors prevalence Yem.n

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