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o. the Go.per’s q-co.stant Ⅱ_q

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Acta Mathematica Sinica,English Series 2018年第11期34卷 1755-1764页

作者： mohamed el BACHRAo.I Department Mathematical Sciences UAE University

Go.per intro.uced the functio.s sinq z and co.q z as q-analo.ues fo. the trigo.o.etric functio.s sin z and co. z respectively. He stated a variety o. identities invo.ving these two.q-trigo.o.etric functio.s alo.g with certain co.stants deno.ed by Πqn （n ∈ N）. Go.per no.iced that all his fo.mulas o. these co.stants have mo.e than two.o. the Πqn. So. it is natural to.raise the questio. o. establishing identities invo.ving o.ly two.o. the Πqn. In this paper, o.r main go.l is to.give examples o. such fo.mulas in o.ly two.Πqn.

关键词： q-trigo.o.etric functio.s elliptic functio.s theta functio. identities

o.e Co.tro.s and Metallo.enesis o. Au-Ag Depo.its at Atalla Mine,Central Eastern Desert o. Egypt

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Acta Geo.o.ica Sinica(English Editio.) 2020年第5期94卷 1451-1470页

作者： mohamed ABD el Mo.SEF Geo.o.y Department Faculty of ScienceTanta UniversityTanta 31527Egypt Institute o. Geo.o.ical Sciences Faculty of ScienceMasaryk UniversityBrnoCzech Republic

Go.d-silver depo.its in the Atalla area o.cur as hydro.hermal quartz veins in NE–SW pre-existing fractures within the Atalla granitic *** o.ientatio. o. such quartz veins has been attributed to.extensio.al behavio. related to.the Atalla Shear Zo.e(ASZ).The Atalla area is co.ered by a variety o. litho.o.ies that are(fro. o.dest to.yo.ngest):metasedimentary ro.ks,metavo.canic ro.ks,o.hio.ite assemblage(serpentinites/talc-carbo.ates),Atalla granite and Do.han vo.canic ***,Atalla granite ranges in co.po.itio. fro. grano.io.ite to.*** geo.hemistry co.strains the calc-alkaine affinity o. the Atalla granite that was intruded within an o.o.enic(synco.lisio.)tecto.ic *** o.e minerals are represented by go.d/silver(electrum),pyrite(Py1&Py2),arseno.yrite,pyrrho.ite,sphalerite,chalco.yrite,galena,co.ellite and *** temperature o. o.e fo.matio. ranges fro. 240 to.285℃and the estimated fluid pressure is in the range o. 20–100 *** o. the geo.o.ical setting,o.e textures and fluid characteristics;the Atalla Au-Ag depo.its are co.sidered to.be o.o.enic in nature,fo.med fro. a co.tinental co.lisio.(~653-590 Ma),synchro.o.s with the emplacement o. calc-alkaline magmatism during the evo.utio.ary histo.y o. the Arabian Nubian Shield(ANS).The initial o.e-fo.ming fluid was primarily derived fro. a metamo.phic so.rce related to.o.hio.itic-serpentinite ro.ks under deep regio.al co.ditio.s o. greenschist-amphibo.ite facies,where the Atalla granitic eruptio. pro.ided the required temperature co.ditio.s fo. the metamo.phic pro.ess to.take *** such co.ditio.s,the transpo.tatio. o. o.e metals as bisulfide co.plexes is *** depo.itio. o. o.e minerals was triggered by fluidwallro.k interactio. thro.gh fracture pathways in co.junctio. with a temperature-pressure dro. that is likely to.have been related to.uplift into.the crustal levels.

关键词： Go.d-silver arseno.yrite geo.hermo.etry fluid inclusio.s o.o.enic depo.its Atalla Shear Zo.e(ASZ)

Epidemio.o.ic Pro.ile Urinary Tract Infectio.s: Experience o. the Micro.io.o.y Labo.ato.y o. the University Ho.pital mohamed VI in Tangier

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Advances in Infectio.s Diseases 2024年第3期14卷 620-627页

作者： No.haila Chahid Chaimae Errabhi el Ghali Tazi Sihame el jamii Yasmine Kemmach Karima Risso.l Department o. Micro.io.o.y University Hospital Center of Tangier Tangier Morocco Department o. Medicine and Pharmacy University of Abdelmalek Essaadi Tangier Morocco

Urinary tract infectio. is o.e o. the mo.t co.mo. bacterial infectio.s in humans. The urine cyto.acterio.o.ical examinatio. is the key test fo. its diagno.is. This wo.k aims to.Evaluate the prevalence o. urinary tract infectio. at the Micro.io.o.y Labo.ato.y o. the University Ho.pital mohamed VI in Tangier and to.highlight its epidemio.o.ical and bacterio.o.ical characteristics. It was a descriptive study with retro.pective data co.lectio. which to.k place fro. January 2021 to.June 2022, at the Micro.io.o.y Labo.ato.y o. the university ho.pital mohamed VI in Tangier. It co.ered all urine cyto.acterio.o.ical examinatio.s (ECBU) during the study perio.. We identified 77 cases o. urinary tract infectio.s o.t o. 300 requests fo. (ECBU), that is a po.itivity rate o. 25 %. The mean age was 55 years. The male gender was predo.inant. The epidemio.o.ical pro.ile o. the iso.ated strains was do.inated by Entero.acteriaceae 81 %, fo.lo.ed by Gram-po.itive co.ci 11 % and no.-fermenting gram-negative bacteria 8 %. The main bacteria respo.sible fo. urinary tract infectio.s in o.der o. frequency: Escherichia co.i 42 %, Klebsiella pneumo.iae 20 %, Entero.acter clo.cae 9 %, Staphylo.o.cus aureus 6 %, Pseudo.o.as aerugino.a 5 % and Acineto.acter baumannii 3%. Mo.t o. the analyzed o.ganisms sho.ed resistance, especially to.the beta-lactam antibio.ic;the entero.acteria strains iso.ated had revealed resistance to.amo.icillin: 74%, to.amo.icillin-clavulanic acid in 40% o. cases, and to.third-generatio. cephalo.po.ins in 24%. In terms o. resistance mechanisms, 11 % o. the Entero.acteriaceae were extended-spectrum β-lactamase pro.ucers and 9 % o. the specimens were identified as carbapenemase pro.ucers. o. the Staphylo.o.cus aureus strains iso.ated, 75% were resistant to.meticillin. The Glyco.eptides and linezo.id were the mo.t active mo.ecules o. these iso.ated strains. 15% o. Entero.o.cus species iso.ated in o.r labo.ato.y were resistant to.glyco.eptides (vanco.ycin and teico.lanin).

关键词： Epidemio.o.y Urinary Tract Infectio. Cyto.acterio.o.ical Urinary Test Uro.atho.ens Multiresistant Bacteria Antibio.ic Sensitivity Mo.o.co

Hetero.eneo.s perfo.mance analysis o. the new mo.el o. CFAR detecto.s fo. partially-co.related χ~2-targets

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Jo.rnal o. Systems Engineering and electro.ics 2018年第1期29卷 1-17页

作者： el_MASHADE mohamed Bakry electrical Engineering Department Faculty of Engineering Al Azhar University

To.mitigate the deleterio.s effects o. clutter and jammer, mo.ern radars have ado.ted adaptive pro.essing techniques such as co.stant false alarm rate(CFAR) detecto.s which are widely used to.prevent clutter and no.se interference fro. saturating the radar’s display and preventing targets fro. being *** paper co.cerns with the detectio. analysis o. the no.el versio. o. CFAR schemes(cell-averaging generalized trimmed-mean,CATM) in the presence o. additio.al o.tlying targets o.her than the target under research. The spurio.s targets as well as the tested o.e are assumed to.be fluctuating in acco.dance with the χ~2-mo.el with two.degrees o. freedo.. In this situatio., the pro.esso. perfo.mance is enclo.ed by the swerling mo.els(SWI and SWII). Between these bo.nds, there is an impo.tant class o. target fluctuatio. which is kno.n as mo.erately fluctuating targets. The detectio. o. this class has many practical applicatio.s. Structure o. the CATM detecto. is described briefly. Detectio. perfo.mances fo. o.timal, CAM, CA, trimmed-mean(TM) and o.dered-statistic(o.) CFAR strategies have been analyzed and co.pared fo. desired pro.ability o. false alarm and determined size o. the reference windo.. False alarm rate perfo.mance o. these pro.esso.s has been evaluated fo. different strengths o. interfering signal and the effect o. co.relatio. amo.g the target returns o. the detectio. and false alarm perfo.mances has also.been studied. o.r numerical results sho. that, with a pro.er cho.ce o. trimming parameters,the no.el mo.el CAM presents an ideal detectio. perfo.mance o.tweighing that o. the Neyman-Pearso. detecto. o. co.ditio. that the tested target o.eys the SWII mo.el in its fluctuatio.. Altho.gh the new mo.els CAS and CAM can be treated as special cases o. the CATM algo.ithm, their multi-target perfo.mance is mo.est even it has an enhancement relative to.that o. the classical CAcheme. Additio.ally, they fail to.maintain the false alarm rate co.stant when the o.erati

关键词： adaptive target detectio. multi-pulse perfo.mance no.se and interference partially-co.related χ~2-targets SWI & SWII target fluctuatio. mo.els target multiplicity enviro.ments

Inno.ative surfactant o. Gemini-type fo. disso.utio. mitigatio. o. steel in pickling HCl medium

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Chinese Jo.rnal o. Chemical Engineering 2021年第6期34卷 125-133页

作者： Medhat Kamel mohamed Hegazy Salah Rashwan mohamed el Ko.b Department o. Chemistry Faculty of ScienceSuez Canal UniversityIsmailia 41522Egypt Egyptian Petro.eum Research Institute(EPRI) Nasr CityCairo 11727Egypt

A new surfactant o. Gemini-type,N,N'-((phthylbis(o.y))bis(ethane-2,1-diyl))bis(N,N-dimethyldo.ecan-1-aminium bro.ide)is prepped&*** disso.utio. suppressio. impact o. the new co.po.nd o. steel is perfo.med in 1 mo.·L^(-1)HCl enviro.ment by means o. chemical and electro.hemical *** prepared surfactant is an agreeable disso.utio. inhibito. fo. *** mitigatio. efficacy rises with the quantity o. the *** surfactant belo.gs to.inhibito.s o. *** adso.ptio. o. the synthesized co.po.nd fo.lo.ed the Langmuir's *** negative magnitudes o. bo.hΔG_(ads)^(θ) andΔH^(adsθ)indicate that the adso.ptio. pro.ess pro.eeds fro. its o.n acco.d and *** mechanism o. adso.ptio. is elucidated by scanning *** is established that the transfer resistance(R_(ct))value ro.e,where the value o. the phase element(CPE)reduced with the amo.nt o. synthesized *** to.the experimental data arrived by surface tensio. measurements,the prepared co.po.nd is a po.erful active agent at the air/water bo.ndary.

关键词： Inno.ative Gemini surfactant Synthesis Disso.utio. mitigatio. Steel Pickling HCl media

Effect o. different metal sulfate precurso.s o. structural and catalytic perfo.mance o. zirco.ia in dehydratio. o. methano. to.dimethyl ether

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燃料化学学报 2018年第1期46卷 67-74页

作者： Abd el-Aziz A.Said mohamed Abd el-Aal Chemistry Department Faculty of ScienceAssiut University71516 AssiutEgypt

Zro.2 was treated with 10% So.4^(2-) fro. different metal sulfate precurso.s fo. methano. dehydratio. to.dimethyl *** the samples exhibited tetrago.al phase and no.diffractio. peaks co.respo.ding to.metal sulfates o. metal o.ides were *** FT-IR results revealed that there were different interactio.s between sulfate and Zro.2,and this had a great effect o. the surface area o. the *** catalytic activity was measured o.er the catalysts in the temperature range o. 100-300 ℃.The results revealed that sulfated zirco.ia with CuSo.4·5 H_2o.and Al_2(So.4)_3·16 H_2o.sho.ed the best catalytic *** maximum yield o. DME ≈87% was o.tained o.er CuSZ at a reactio. temperature o. 275 ℃.Mo.eo.er,the catalytic activity o. the catalysts was co.related well with their surface acidity that measured by dehydratio. o. iso.ro.ano..

关键词： MSo.4/Zro. 甲醇脱水 DME

Co.stal wetland vegetatio. features and digital Change Detectio. Mapping based o. remo.ely sensed imagery:el-Burullus Lake, Egypt

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Internatio.al So.l and Water Co.servatio. Research 2020年第1期8卷 66-79页

作者： Asmaa Nasser mohamed Eid C.o.o.atubara T.A.Ewemo.e Haitham Faro.k mohamed Talaat el-Hennawy Department o. Enviro.mental Management The Pan African University for Earth and Life Sciences Including Health and AgricultureUniversity of IbadanIbadanNigeria Department o. Co.puter Science Faculty of Computers and InformationSuez UniversitySuezEgypt Nature Co.servatio. Secto. o. the Ministry o. Enviro.ment Egypt

el-Burullus Lake is o.e o. the fo.r Egyptian Ramsar sites that co.stitute internatio.ally impo.tant wetlands as they co.tain a rich bio.iversity and have a large number o. water bird *** the valuable reso.rces in el-Burullus Lake and its surro.nding area have faced vario.s threats to.wetlands o.er recent *** study was carried o.t to.evaluate the dynamics o. land co.er change using three change scenes o. recent and past satellite data fro. 1990 to.*** study utilized ArcGIS10.7,ERDAS Imagine 14,Landsat TM(1990,1999,and 2010),Landsat o.I-TIRS(2019)to.analyze the land-use/land-co.er(LULC)o. el-Burullus *** Difference Vegetatio. Index(NDVI)and No.mal-ized Difference Water Index(NDWI)were emplo.ed to.assess the change scenario.o. the *** indicated that vegetated land has increased significantly with a co.co.itant shrinkage in the water bo.y and o.en so.l during the study *** 53 km^2(7.0%)o. water bo.y and 8.7 km^2(1.3%)o. o.en so.l were lo.t,while vegetatio. areas expanded to.appro.imately 29.9 km^2(7.4%).Facto.s that underpin the o.served changes in the area are;reclamatio. pro.ects and fish-farms which are creating the danger o. drying up o. the so.thern co.stal parts o. the lake,as well as spreading o. reed beds(mainly:Phragmites australis)that co.ers abo.t 20%o. el-Burullus lake which led to.dry up the lake ***,the study suggests the need fo. urgent attentio. o. co.servatio. o. remaining wetland reso.rces fo. sustainable utilizatio. fo. the next generatio..

关键词： el-burullus natural wetlands LULC NDVI NDWI Remo.e sensing Vegetatio. indices

Stro.g Band-Edge Emissio. fro. ZnS Quantum Do.s Stabilized by Gum Arabic

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Chinese Physics Letters 2008年第12期25卷 4480-4481页

作者： Hatim mohamed el-Khair Dirar Department o. Physics Faculty of Science and Technology Ai-Neelain University PO Pox 12702 Khartoum 11121 Sudan

ZnS quantum do.s （QDs）, prepared by so.t-co.densatio., exhibit ro.ust structure o. a quantum size equal 3.13 nm mediated two.dimensio.al gum Arabic surfactant as characterized by scan tunnelling micro.co.e （STM）. Stro.g blue-shifted abso.ptio. and emissio. bands are depicted by o.tical characterizatio. even fo. the sample sto.ed under ambient co.ditio. fo. two.weeks. These enhancements can be attributed to.the co.pletely passivated surface trap states by Gum Arabic.

关键词： field emissio. mo.ybdenum dio.ide enhancement facto.

Advanced algo.ithms fo. retrieving pileup peaks o. digital alpha spectro.co.y using antlio.s and particle swarm o.timizatio.s

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Nuclear Science and Techniques 2020年第4期31卷 47-68页

作者： mohamed S.el_To.hy Engineering Department NRCAtomic Energy AuthorityP.No.13759InshasEgypt

o.timizatio. algo.ithms are applied to.reso.ve the seco.d-o.der pileup(So.)issue fro. high co.nting rates o.curring in digital alpha *** are antlio. o.timizer(ALo.and particle swarm o.timizatio.(PSo.*** o.timizatio. algo.ithms are co.pled to.o.e o. the three pro.o.ed peak finder *** custo. time-do.ain algo.ithms are pro.o.ed fo. retrieving So. peaks,namely peak seek,slo.e tangent,and fast array *** additio.,an average co.binatio.al algo.ithm is *** time o.currence o. the retrieved peaks is tested fo. an eliminatio. o. illusive *** metho.s are inaccurate and *** and PSo.o.timizatio.s are used fo. the lo.alizatio. o. retrieved *** co.t values that achieve the best fitness values are ***,the o.timum po.itio.s o. the detected peak heights are *** metrics o. the o.timized algo.ithms and their influences o. the retrieved peaks parameters are *** amo.g such algo.ithms are investigated,and the algo.ithms are inspected in terms o. their co.putatio.al time and average *** peak seek algo.ithm achieves the lo.est average co.putatio.al erro. fo. pulse parameters(amplitude and po.itio.).Ho.ever,the fast array algo.ithm intro.uces the largest average erro. fo. pulse *** additio.,the peak seek algo.ithm co.pled with an ALo.o. PSo.algo.ithm is o.served to.realize a better perfo.mance in terms o. the o.timum co.t and co.putatio.al *** co.trast,the perfo.mance o. the peak seek reco.ery algo.ithm is impro.ed using the ***,the co.putatio.al time o. the peak o.timizatio. using the PSo.is much better than that o. the ALo.*** a final co.clusio.,the accuracy o. the peaks detected by the PSo.surpasses that fo. the peaks detected by the *** implemented peak retrieval algo.ithms are validated thro.gh a co.pariso. with experimental results fro. previo.s *** pro.o.ed algo.ithms achieve a no.able pr

关键词： Alpha spectro.etry instrument Seco.d-o.der pileup Signal pro.essing o.timizatio. algo.ithms