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Eva.ua.ion of urea.brea.h test a. a.dia.nostic tool for Helicoba.ter pylori infection in a.ult dyspeptic pa.ients

World Journa. of Ga.troenterology 2024年第17期30卷 2302-2307页

作者： Zeina. nabil ahmed Sa.d a.ma. Moha.ed El-Na.ser Depa.tment of Medica. Microbiology&Immunology Faculty of Medicine for Girls Al-Azhar UniversityNasr City 11754CairoEgypt

In this editoria.,we discuss the a.ticle in the World Journa. of *** a.ticle conducts a.meta.a.a.ysis of the dia.nostic a.cura.y of the urea.brea.h test(UBT),a.non-inva.ive method for detecting Helicoba.ter pylori(***)infection in *** is ba.ed on ra.ionuclide-la.eled *** methods,both inva.ive a.d non-inva.ive,a.e a.a.la.le for dia.nosing *** infection,inclu-ding endoscopy with biopsy,serology for immunoglobulin titers,stool a.tigen a.a.ysis,a.d *** guidelines recommend UBTs a. the prima.y choice for dia.nosing *** infection a.d for reexa.ining a.ter era.ica.ion *** is used to be the first choice non-inva.ive test due to their high a.cura.y,specificity,ra.id results,a.d ***,its performa.ce rema.ns una.fected by the distribution of *** in the stoma.h,a.lowing a.high flow of pa.ients to be *** its widesprea. use,the performa.ce cha.a.teristics of UBT ha.e been inconsistently described a.d rema.n incompletely *** a.e two UBTs a.a.la.le with Food a.d Drug a.ministra.ion a.prova.:The 13C a.d 14C *** tests a.e a.forda.le a.d ca. provide rea.-time *** ma. prefer the 13C test beca.se it is non-ra.ioa.tive,compa.ed to 14C which uses a.ra.ioa.tive isotope,especia.ly in young children a.d pregna.t *** there wa. heterogeneity a.ong the studies rega.ding the dia.nostic a.cura.y of both UBTs,13C-UBT consistently outperforms the *** ma.es the 13C-UBT the preferred dia.nostic ***,the provided findings of the meta.a.a.ysis empha.ize the significa.ce of precise considera.ions when choosing urea.dosa.e,a.sessment timing,a.d mea.urement techniques for both the 13C-UBT a.d 14C-UBT,to enha.ce dia.nostic precision.

关键词： Helicoba.ter pylori Urea.brea.h test Dia.nosis Dia.nostic test a.cura.y Meta.a.a.ysis

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Surfa.e a.tiva.ion of viscose textiles via.a.r,a.gon,a.d oxygen dielectric ba.rier discha.ge pla.ma.influence of pea. volta.e

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Pla.ma.Science a.d Technology 2024年第7期26卷 134-147页

作者： Shrouk ELa.HRY Usa.a.M.Ra.HED Mosta.a.a.Wa.Ba.Hend M.ahmed nabil M.ELSIRa.Y Pla.ma.La.ora.ory Physics DepartmentFaculty of scienceTanta UniversityTanta 31527Egypt Physics Depa.tment Faculty of Science(Male)Al-Azhar UniversityCairo 11651Egypt Textile Resea.ch Industria. Division National Research CentreDokkiGiza 12622Egypt

This pa.er discusses the use of a.mospheric pressure dielectric ba.rier discha.ge(DBD)pla.ma.trea.ment to enha.ce the surfa.e qua.ities of viscose *** study explores the effects of different pla.ma.ga.es,discha.ge volta.es,a.d exposure times on the trea.ed *** findings empha.ize the importa.ce of optimizing the pla.ma.s pea. volta.e to a.hieve the desired surfa.e trea.ment *** document a.so presents da.a.on colour strength,wetta.ility,colour fa.tness,a.d tensile strength of the trea.ed fa.rics,a. well a. sca.ning electron microscopy(SEM)a.a.ysis of surfa.e morphology a.d chemica. a.a.ysis using fouriertra.sition infra.ed spectroscopy(FTIR)a.d energy dispersive X-ra.(EDX).The results show tha. trea.ment a. a.pea. volta.e of 11.83 k V is more efficient,except for the tensile strength which is enha.ced a. a.pea. volta.e of 8.92 k *** oxygen pla.ma.trea.ment significa.tly improves the colour strength,which exhibits a. increa.e from 11 to *** intensified colour wa. a.tributed to the significa.t influence of electrosta.ic intera.tions between the cha.ged hydroxyl groups of the oxygen pla.ma.trea.ed viscose textiles a.d the dye molecules,which enha.ce the *** oxygen DBD pla.ma.exhibits a.higher a.ility to enha.ce the properties of textiles when compa.ed to a.r a.d a.gon *** study presents a.susta.na.le,economica.,secure,a.d ecologica.ly friendly a.proa.h to explore new fa.rics for specific uses.

关键词： Lissa.ous dia.ra.s printa.ility wetta.ility tensile strength SEM EDX FTIR

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a. overview of occult hepa.itis B virus infection

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World Journa. of Ga.troenterology 2011年第15期17卷 1927-1938页

作者： Zeina. nabil ahmed Sa.d Depa.tment of Microbiology a.d Immunology Faculty of Medicine (for girls) Al-Azhar University Cairo 1047 Egypt

Occult hepa.itis B virus (HBV) infection (OBI), a.terna.ively defined a. occult hepa.itis B (OHB), is a.cha.lenging clinica. entity. It is recognized by two ma.n cha.a.teristics: a.sence of HBsa., a.d low vira. replica.ion. The previous two deca.es ha.e witnessed a.rema.ka.le progress in our understa.ding of OBI a.d its clinica. implica.ions. a.propria.e dia.nostic techniques must be a.opted. Sensitive HBV DNa.a.plifica.ion a.sa. is the gold sta.da.d a.sa. for detection of OBI. Vira. a. well a. host fa.tors a.e implica.ed in the pa.hogenesis of OBI. However, published da.a.reporting the infectivity of OBI by tra.sfusion a.e limited. Severa. a.pects including OBI tra.smission, infectivity a.d its rela.ion to the development of chronic liver disea.es a.d hepa.ocellula. ca.cinoma.ha.e to be resolved. The a.m of the present review is to highlight recent da.a.on OBI with a.focus on its virologica. dia.nosis a.d clinica. outcome.

关键词： Hepa.itis B virus Occult infection Occult hepa.itis B virus infection Occult hepa.itis B Chronic liver disea.e Hepa.ocellula. ca.cinoma Hepa.itis B surfa.e a.tigen

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Dia.nosis a.d ma.a.ement of choledocha. cyst: 20 yea.s of single center experience

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World Journa. of Ga.troenterology 2014年第22期20卷 7061-7066页

作者： nabil Ga.elha. ahmed Shehta.Hosa. Ha.ed Depa.tment of Surgery Gastrointestinal Surgical CenterMansoura UniversityManoura 35516DakahleyyaEgypt

We report the first ca.e series from a.rica.a.d the Middle Ea.t on choledocha. cyst, a.disea.e which shows significa.t geogra.hica. distribution with high incidence in the a.ia. popula.ion. In this study, the epidemiologica. da.a.of the pa.ients a.e presented a.d a.a.yzed. a.tention wa. pa.d to dia.nostic ima.ing a.d its a.cura.y in the dia.nosis a.d cla.sifica.ion of choledocha. cyst. Most ca.es of choledocha. cyst disea.e ha.e type I a.d IV-a.cysts a.cording to the Toda.i cla.sifica.ion system, which support the etiologica. theories of choledocha. cyst, especia.ly Ba.bitt’s theory of the a.oma.ous pa.crea.icobilia.y duct junction, which a.e clea.ly sta.ed. The difficulties a.d ha.a.ds of surgica. ma.a.ement a.d methods used to a.oid opera.ive complica.ions a.e cla.ified. Ea.ly a.d la.e postopera.ive complica.ions a.e a.so included. This study should be followed by multicenter studies throughout Egypt to help a.sess the incidence of choledocha. cysts in one of the la.gest popula.ions in a.rica.a.d the Middle Ea.t.

关键词： Choledocha. cyst Hepa.ic cyst Hepa.icojejunostomy Ca.oli disea.e Hepa.ectomy

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Swa.ming Beha.ior of Ha.ris Ha.ks Optimizer for a.a.ic Opinion Mining

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Computers, Ma.eria.s & Continua 2021年第12期69卷 4129-4149页

作者： Dia. Sa.a. a.d Elmina.m nabil Negga. Ibra.im a.dula.ief ahmed ahmed El Sa.y a.ouelya.ed Depa.tment of Informa.ion Systems Faculty of Computers and Artificial IntelligenceBenha University12311Egypt Depa.tment of Computer Science Faculty of Computer ScienceMisr International UniversityEgypt Universite des Sciences a. de la.Technologie d’Ora. Moha.ed Boudia. USTO-MBBP 1505EL M’naouer31000 OranLaboratoire Signal Image Parole(SIMPA)Department d’informatiqueFaculte des Mathematiques et InformatiqueAlgerie Depa.tment of Computer Science Faculty of Computers and Artificial IntelligenceBenha University12311Egypt Depa.tment of Computer Science Obour High Institute for Computers and InformaticsEgypt

a. present,the immense development of socia. networks a.lows genera.ing a.significa.t a.ount of textua. da.a.which ha. fa.ilita.ed resea.chers to explore the field of opinion *** a.dition,the processing of textua. opinions ba.ed on the term frequency-inverse document frequency method gives rise to a.dimensiona.ity *** study a.ms to detect the na.ure of opinions in the a.a.ic la.gua.e employing a.swa.m intelligence(SI)-ba.ed a.gorithm,Ha.ris ha.ks a.gorithm,to select the most releva.t *** experimenta. study ha. been tested on two da.a.ets:a.a.ic Jorda.ia. Genera. Tweets a.d Opinion Corpus for *** terms of a.cura.y a.d number of fea.ures,the results a.e better tha. those of other SI ba.ed a.gorithms,such a. grey wolf optimizer a.d gra.shopper optimiza.ion a.gorithm,a.d other a.gorithms in the litera.ure,such a. differentia. evolution,genetic a.gorithm,pa.ticle swa.m optimiza.ion,ba.ic a.d enha.ced wha.e optimizer a.gorithm,sla. swa.m a.gorithm,a.d a.t–lion optimizer.

关键词： a.a.ic opinion mining Ha.ris ha.ks optimizer fea.ure selection a.GT a.d OCa.da.a.ets

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适合低压大电流直流输入的软开关局部PDM PWM高频DC-DC功率变换器

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电力电子 2005年第5期3卷 28-32页

作者： Hideka.u Mura.ka.Osa.u Noro Kenya.Sa.a.oto nabil a. ahmed Hyun Woo-Lee Mutsuo Na.a.ka Ma.itime Technology Depa.tment Hiroshima National College of Maritime Technology Ka.a.a.i Hea.y Industry Co.Ltd Division of Ocea. Mecha.ica. Engineering Kobe University Electric Energy Sa.ing Resea.ch Center Kungnum University

本文特别针对24V电池输入条件下的低电压,大电流特性,设计了一种新颖的PWM软开关DC-DC前向式功率变换器模型。在局部运行区域,利用了ZCS PWM DC-DC前向式功率变换器的附加控制模式来实现软开关。这种新型功率变换器在低负载条件下可支持... 详细信息

本文特别针对24V电池输入条件下的低电压,大电流特性,设计了一种新颖的PWM软开关DC-DC前向式功率变换器模型。在局部运行区域,利用了ZCS PWM DC-DC前向式功率变换器的附加控制模式来实现软开关。这种新型功率变换器在低负载条件下可支持PWM-PDM双模控制一疗式,研究结果征实,在ZCS 和有功电压钳位开关条件下,基于PWM-PDM双模控制的软开关前向式功率变换器可在较大的负载范围内改善运行效率。

关键词： DC-DC功率变换器软开关 PWM 低压大电流直流输入局部 PDM 高频控制方式负载条件

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Ma.hine lea.ning-supported seismic stra.igra.hy of the Pa.eozoic Nubia.Forma.ion(SW Gulf of Suez-rift):Implica.ions for pa.eoenvironmentpetroleum geology of a.la.ustrine-fa. delta

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Petroleum 2023年第2期9卷 301-315页

作者： Moha.ma. a.a.delwa.ha. nabil a.a.delha.ez ahmed M.Emba.i Geology Depa.tment Faculty of ScienceAl-Azhar UniversityNasr CityCairoEgypt

Steeply dipping progra.ing fa. delta. possess high reservoir qua.ity fa.ies tha. could be excellent ta.gets while exploring for *** to their complex sta.king na.ure,a.d limited exa.ples,delinea.ing their a.chitectura. elements is still *** this pa.er we ma.nly performed sedimenta.y fa.ies a.a.ysis;a.plying va.ious disciplines *** stra.igra.hy,seismic stra.igra.hy,GR-log motifs,a.d seismic wa.eform segmenta.ion;so a. to a.equa.ely depict the reservoir heterogeneity a.d qua.ity of the Pa.eozoic Nubia.cla.tics in West Esh El Ma.la.a.Concession(southwest Gulf of Suez rift).Orga.ic ma.urity prediction,to confirm the hydroca.bon cha.ging from source units to reservoir interva.s,wa. a.so of most importa.ce in this ***,1D ba.in model wa. esta.lished to define the pa.t geologic events;subsidence,a.d therma. ma.urity;a.d their controls on sedimenta.y ba.in evolution a.d a.socia.ed petroleum *** utilized severa. key-informa.ion sca.es;*** logs,a.d seismic *** different disciplines a.plied in this study points to a.successful integra.ed reservoir cha.a.teriza.ion workflow ca.a.le of unfolding a.cient environments a.d the a.socia.ed hydroca.bon *** results show tha. Nubia.Forma.ion wa. built during the lowsta.dtra.sgressive pha.e of a.3rd order depositiona. *** encompa.ses fluvio-la.ustrine system with eight sedimenta.y fa.ies a.socia.ions;form source to *** cha.nels a.d mouth ba.s,settled in suba.ria. a.d suba.ueous settings respectively,represent the most significa.t reservoir fa.ies in the *** best hydroca.bon-reservoir qua.ity,the delta.c mouth ba.s ought to a.tra.t a.tention of further oilfield development pla.s a.d be considered while investiga.ing simila. settings.

关键词： Seismic stra.igra.hy Nubia.forma.ion Pa.eoenvironment Petroleum geology West Esh El Ma.la.a.concession Gulf of Suez

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Interference Ma.a.ement for Dyna.ic TDD in C-Ra.

Interference Management for Dynamic TDD in C-RAN

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作者： ahmed nabil Ha.ZA 北京邮电大学

学位级别：硕士

移动手机用户爆炸式的业务量增长为未来5G移动蜂窝网络提出了挑战。研究预测在2025年时网络将会呈现“1000倍的数据业务需求增长”。显然,当前的蜂窝网络无法应对上述需求。多输入多输出(Multiple-input multiple-output,MIMO)技术可以... 详细信息

移动手机用户爆炸式的业务量增长为未来5G移动蜂窝网络提出了挑战。研究预测在2025年时网络将会呈现“1000倍的数据业务需求增长”。显然,当前的蜂窝网络无法应对上述需求。多输入多输出(Multiple-input multiple-output,MIMO)技术可以提供空间自由度并能够有效支持多用户通信。同时,动态时分双工(Dyna.ic Time DivisionDuplex,D-TDD)系统具出有效控制用户业务流的强大潜力。在D-TDD系统中,上行(Uplink,UL)及下行(Downlink,DL)资源可以在多小区中被灵活调度以满足业务需求。然而,D-TDD中存在的干扰可能影响系统性能的提升。目前,针对传统蜂窝网络和异构网络已有很多干扰管理方案提出,但是关于D-TDD中的干扰管理研究还相对较少。最近,云无线接入网(Cloud Ra.io a.cess Network,C-Ra.)已被提出,并有望通过集中式的管理有效提升网络的频谱效率、能量效率,同时能够降低网络运维成本。建立在C-Ra.结构之上,本文将考虑多小区、多用户MIMOD-TDD系统中的干扰管理问题,其中每一个小区有一个M天线的基站和N个具备L天线的用户。一般而言,D-TDD系统中的基站可以依据瞬时的业务需求进行上行或者下行传输。针对MU-MIMO在D-TDD系统中的应用,系统中将呈现两类主要干扰,分别是:小区内干扰,主要由小区内MU-MIMO传输造成;小区间干扰,主要由不同小区间的上下行非同步传输造成。为了消除D-TDD系统中存在的各类干扰,本文提出了基于机会干扰对齐(Opportunistic Interference a.ignment,OIa.的传输方案体系,即OIa.DTDD。其中,本文首先提出了基于参考信号空间(Reference Signa. Spa.e,RSS)的干扰觉知用户调度方案,仅选取合适的用户参与通信。通过合理的用户调度,小区内以及小区间的干扰都可以得到有效控制。更进一步,本文提出了基于RSS的基站收发机设计以消除小区之间的干扰。在D-TDD系统中,本文所提的OIa.DTDD整体方案设计显示出较传统非干扰觉知方案更好的干扰消除能力。

关键词：异构网络动态十分双工云无线接入网多输入多输出机会干扰对齐

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3D-sta.ic reservoir a.d ba.in modeling of a.la.ustrine fa.-delta.c system in the Gulf of Suez,Egypt

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Petroleum Resea.ch 2023年第1期8卷 18-35页

作者： Moha.ma. a.a.delwa.ha. nabil a.a.delha.ez ahmed M.Emba.i Geology Depa.tment Faculty of ScienceAl-Azhar UniversityNasr CityCairo11884Egypt

La.ustrine-fa. delta. fea.ure high reservoir-qua.ity lithounits tha. a.e critica. ta.gets to hydroca.bon explora.ion a.d ***,depicting their intrica.e sedimenta.y a.chitectura. elements is still cha.lenging due to complex sta.king-pa.terns a.d limited *** this study,both 3D-sta.ic geocellula. reservoir modeling a.d 1D-ba.in modeling a.proa.hes were combined a. a. esta.lished effective workflow tha. is ca.a.le of efficiently delinea.ing reservoir-heterogeneities a.d confirming *** integra.ion wa. for the purpose of unlocking the ultima.e petroleum potentia. of fluvio-la.ustrine units,Nubia.Forma.ion,in the southwest of the Gulf of Suez rift(West Esh-ElMa.la.a.Concession,Egypt).Pixel-ba.ed stocha.tic-simula.ion wa. a.plied,constra.ned by a. esta.lished depositiona.-model developed a.ter a.equa.e integra.ed-fa.ies a.a.ysis,upon geocellula.ly modeling rock a.d fluid properties of Nubia.reservoir interva.s;utilizing severa. key-informa.ion sca.es(seismic-profiles,well-logs).The results revea. a.lowsta.d-tra.sgressive systems tra.t encompa.sing fluvio-la.ustrine depositiona.-systems subdivided into eight fa.ies-a.socia.ions,of which fluvia.cha.nels a.d delta.c mouth ba.s represent significa.t reservoir-qua.ity *** efficient reservoir-qua.ity,mouth sa.d-ba.s deserve specia. considera.ion,a.d testing,while running further oilfield development-endea.ours a.d investiga.ing simila.-settings.

关键词： Fa.ies a.a.ysis 3D-sta.ic reservoir modeling Ba.in modeling Pa.eoenvironment-petroleum geology Gilbert-type fa.-delta. Gulf of suez rift

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a.Pa.a.etric Study of Mesh Free Interpola.ion Ba.ed Recovery Techniques in Finite Element Ela.tic a.a.ysis

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Computer Modeling in Engineering & Sciences 2019年第11期121卷 687-786页

作者： Mohd.ahmed Moha.ed Hechmi El Ouni Devinder Singh nabil Ben Ka.la College of Engineering Main CampusGregarK.K.UniversityAbha61421KSA Minitry of Informa.ion Soochan BhavanCGO ComplexDelhi110003India

The pa.er presents a.pa.a.etric study on interpola.ion techniques ba.ed postprocessed error estima.ion in finite element ela.tic a.a.ysis by va.ying importa.t pa.a.eters of recovery,interpola.ion scheme a.d type of pa.ch *** qua.ity of error estima.ion with recovery pa.a.eters is compa.ed in terms of loca. a.d globa. effectivity of error estima.ion,ra.e of error convergence,a.d a.a.tively refined meshes.a.mesh free moving lea.t squa.e interpola.ion technique with proven relia.ility a.d effectivity is introduced for improving the recovery of finite element solution *** post-processed finite element solutions of ela.tic problems a.e presented for performa.ce study under different pa.a.eters of recovery *** study concludes tha. recovery pa.a.eters of interpola.ion method ha.e pronounced effect on the recovery of finite element solution error a.d a.a.ysis in a.a.tive environment.

关键词： Effectivity error norm moving lea.t squa.e interpola.ion lea.t squa.e interpola.ion recovery techniques

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