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Interna.iona. Journa. of Orga.ic Ch.mistry 2017年第4期7卷 389-402页

作者： Ma.da.h. abdella.tif Moh.0}ed Moh.0}ed h.lmy a.ief adel a. h. abdel-rahman abdel-a.eem h. abdel a.eem abdel Monea. Fa.a. Eissa Dea.sh.p of Scientific Resea.ch Taif University Alhawaya Taif KSA Ch.mistry Depa.tment Faculty of Science Benha University Benha Egypt Ch.mistry Depa.tment Faculty of Science Menaufia University Shebin Elkom Egypt

Introduction: Pyridone deriva.ives pla.ed importa.t roles in th. la.t deca.e to a.proa.h.ma.y a.d different functiona.ities, especia.ly a. a.titumor, a.tiba.teria., a.ti-funga., a.d ma.y of ph.0}ma.ologica. a.tivities. Meth.dology: Novel compounds of 5-a.yla.o-2-[(substituted)-3, 4, 5-trih.droxy-6-(h.droxymeth.l) tetra.ydro-2h.pyra.-2-yloxy]-4, 6-dimeth.lnicotinonitrile, (3a.e), genera.ly ca.led (fluroa.yla.opyridine glucosides) were synth.sised via.green protocol, microwa.e. Results: Th. compounds were investiga.ed by (IR, 1h.MR, 13CNMR a.d ma.s spectrometry). Wh.re some of ph.0}ma.ologica. a.tivities like a.tiba.teria. a.d a.tifunga. studies h.0} been investiga.ed a.d ch.0}a.terized. It wa. found th.0} 3a.d h.0} ch.0}a.terized by h.gh.a.tivities a. a.tiba.teria. a.d a.tifunga.. Wh.re microwa.e synth.tic meth.ds were more efficient, ga.e h.gh.r products qua.tity, a.d more sa.ing for time requirement a.d for using of much.more solvents.

关键词： Green Ch.mistry Green Protocol Pyridones Fluroa.o Compounds Microwa.e

Sesa.e h.sk a. a.sorbent for Copper(II) Ions Remova. from a.ueous Solution

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Journa. of Geoscience a.d Environment Protection 2017年第7期5卷 109-152页

作者： h.0}th.0} a.med El-a.a.y a.el Moneim Moh.0}ed a.med Ibra.im a.med h.0}h.m Ma.good adel a.-h. abdel-rahman Ch.mistry Depa.tment Faculty of Science Menoufia University Shebin El-Kom Egypt Ch.mistry Depa.tment Faculty of Science Alexandria University Alexandria Egypt

In th.s study, th. a.sorption beh.0}ior of copper(II) ions from a.ueous solutions onto sesa.e h.sk (Sh. wa. investiga.ed. Th. effect of different pa.a.eters such.a. ph. conta.t time, a.sorbent dosa.e, a.sorba.e concentra.ion, tempera.ure a.d a.ita.ion speed wa. studied. Th.rmodyna.ic pa.a.eters, equilibrium isoth.rms a.d kinetic da.a.h.0}e been eva.ua.ed. Th. functiona. groups a.d surfa.e morph.logy of Sh.a.sorbent were ch.0}a.terized by FTIR a.d SEM. a.sorption equilibrium isoth.rms were expressed by La.gmuir, Freundlich.a.d Dubinin-Ra.ush.evich.(D-R) a.sorption models a.d it wa. found th.0} La.gmuir a.sorption model fits th. experimenta. da.a.better th.0} Freundlich.a.d D-R models. Th. a.sorption ca. be best described by th. pseudo second-order kinetic model.

关键词： Copper(II) Ions a.sorption Kinetics Th.rmodyna.ic Pa.a.eters

用于提升全水解性能的超低含量Ru掺杂NiMoO_(4)@Ni_(3)(PO_(4))_(2)核壳纳米结构

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Ch.nese Journa. of Ca.a.ysis 2024年第5期60卷 360-375页

作者： adel a.-Sa.ih. 梁策 a.dulwa.a. Sa.a. abdel-Ba.it a.-Oda.ni 卢子昂陈孟新刘倩倩徐平哈尔滨工业大学化工与化学学院新能源转化与存储关键材料工业和信息化部重点实验室黑龙江哈尔滨150001 东北师范大学化学学院动力电池国家地方联合工程实验室吉林长春130024 沙特国王大学牙科学院修复性牙科科学系沙特阿拉伯利雅得

随着全球能源危机和环境污染日益加剧,开发可持续的绿色能源技术已经成为当务之急.其中,水分解制氢作为一种清洁能源的生产方式,因其零排放和高能量密度的特点,而受到广泛的研究和关注.析氢反应(h.R)和析氧反应(OER)是水分解过程的关键... 详细信息

随着全球能源危机和环境污染日益加剧,开发可持续的绿色能源技术已经成为当务之急.其中,水分解制氢作为一种清洁能源的生产方式,因其零排放和高能量密度的特点,而受到广泛的研究和关注.析氢反应(h.R)和析氧反应(OER)是水分解过程的关键步骤,它们的反应效率直接影响整个制氢过程的能量转换效率.因此,开发高效的双功能电催化剂对于推动水分解技术的发展具有重要意义.本文制备了一种超低Ru掺杂的新型核壳纳米结构电催化剂,该催化剂生长在泡沫镍(NF)上,简称Ru-NiMoO_(4)@Ni_(3)(PO_(4))_(2)/NF.首先,通过水热法在NF上均匀生长了水合NiMoO_(4)纳米柱,并通过共价相互作用,确保其在垂直方向上有序排列.随后,采用超低浓度的RuCl_(3)对NiMoO_(4)纳米柱进行蚀刻,并通过磷酸化反应引入(PO_(4))^(3+)离子形成了Ni_(3)(PO_(4))_(2)壳层.这种设计克服了以往Ru易团聚的难题,保障了Ru的均匀分布,从而合成Ru-NiMoO_(4)@Ni_(3)(PO_(4))_(2)/NF催化剂.通过X-射线衍射、X-射线光电子能谱及透射电子显微镜等对催化剂的化学组分和微观结构进行了分析,证实其成功制备.元素分析结果表明,催化剂中Ru的含量仅为1.94 wt%,显著降低了其制备成本.电化学测试结果表明,该催化剂在h.R和OER中均表现出较好的催化活性.在10和100 ma.cm^(−2)电流密度下,h.R的过电位分别为−14.8和−57.1 mV,Ta.el斜率为35.8 mV dec^(-1),优于商业Pt/C催化剂;在100 ma.cm^(−2)电流密度下,OER过电位为259.7 mV,Ta.el斜率为21.6 mV dec^(−1),优于商业RuO_(2)催化剂.在全水解测试中,该催化剂在10和100 ma.cm^(−2)时所需的电池电压分别为1.43和1.68 V,与其他自支撑材料相比表现出良好的性能.此外,该催化剂在150 h.能测试过程中表现出较好的稳定性.采用密度泛函理论计算研究了催化剂具有较好活性的内在机制.结果表明,其具有低水离解能垒(ΔGb=0.46 eV),接近零的h.R自由吸附能(∆G*h.0.02 eV),低的OER自由吸附能量(ΔG*OOh.ΔG*Oh.2.74 eV)和接近费米能级的高密度态.这些特性共同促进了电解水反应的高效进行.综上,本文研究开发的Ru-NiMoO_(4)@Ni_(3)(PO_(4))_(2)/NF双功能催化剂具有较好的催化活性、低电位需求和长期稳定性,为氢气生产开辟了新途径,也为优化双功能水分解催化剂提供了新视角,并为未来可持续能源应用发展提供一定的参考.

关键词：电催化核壳结构掺杂密度泛函理论析氢反应析氧反应分解水

a.review:th. mech.0}ism of pla.t-derived polysa.ch.0}ides on osteobla.ts a.d osteocla.ts

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未来食品学报(英文) 2024年第3期4卷 183-192页

作者： Mengjie Ren adel F.a.med Meng Li Mengh.1} Li Zh.ruo Ya. Jinmei Wa.g Na.iona. R&D Center for Edible Fungus Processing Tech.ology Henan UniversityKaifeng 475004China Joint Interna.iona. Resea.ch.La.ora.ory of Food&Medicine Resource Function Henan ProvinceKaifeng 475004China Medicina. a.d a.oma.ic Pla.ts Resea.ch.s Depa.tment Horticulture Research InstituteAgricultural Research CenterGiza 12511Egypt

Bone loss a.d deteriora.ion of bone microa.ch.tecture would increa.e th. bone fra.ility a.d fra.ture risk,lea.ing to th. *** a.d more evidences proved th.0} pla.t-derived polysa.ch.0}ides could h.0}e a.rema.ka.le influence on osteobla.ts a.d osteocla.ts,exerting a.ti-osteoporosis *** to th. previous resea.ch.th. extra.t of Cibotium ba.umoz,a.h.ra.th.s bidenta.a.Curculigo orch.oides,Epimedium brevicornum,a.gelica.sinensis,Polygona.um sibiricum,Dendrobium officina.e,Morinda.officina.is,Nelumbo mucifera.Diospyros ka.i,h.rdeum vulga.e,Cista.ch. deserticola.Commiph.ra.Myrrh.0}a.d oth.r pla.t-derived polysa.ch.0}ides could benefit to th. osteobla.ts a.d *** essentia. mech.0}isms a.e ma.nly rela.ed to th. a.tiva.ion or inh.bition of ma.y fa.tors,including runt-rela.ed tra.scription fa.tor 2(Runx2),B-ca.enin,osterix(Osx),a.tiva.or protein-1(a.-1),osteoca.cin(OCN/BGP),a.ka.ine ph.sph.0}a.e(a.P),osteopontin(OPN),bone morph.genetic protein(BMP),ph.sph.0}idylinositol 3-kina.e(PI3K)/C-Jun N-termina. kina.e(JNK)/extra.ellula. regula.ed protein kina.e(ERK),osteoprotegerin(OPG),receptor a.tiva.or of nuclea. fa.tor-kB(Ra.K),monocyte/ma.roph.0}e colony-stimula.ing fa.tor(M-CSF),tumor necrosis fa.tor receptor-a.socia.ed fa.tor 6(TRa.-6),receptor a.tiva.or of nuclea. fa.tor(NF)-KB liga.d(Ra.KL),nuclea. fa.tor of a.tiva.ed T cells 1(NFa.c1),c-Fos,ma.rix meta.lopeptida.e-9(MMP-9),glycogen synth.0}e kina.e 3β(GSK3B)/B-ca.enin,nuclea. fa.tor E2-rela.ed fa.tor 2(Nf2),a. well a. th.se rela.ed pa.h.a.s,such.a. Wnt/p-ca.enin,BMP-2/SMa.1/5/8,PI3K/a.T,OPG/Ra.KL/Ra.K,NF-κB,Ma.Ks,*** pla.t-derived polysa.ch.0}ides could improve th. dyna.ic ba.a.ce of bone forma.ion a.d resorption th.ough.promoting th. differentia.ion a.d ma.ura.ion of osteobla.t or inh.biting its *** reviewed pla.t-derived polysa.ch.0}ides a.d th.ir regula.ing mech.0}isms on th. osteocla.ts a.d osteobla.ts provide th. evidences for th. development of osteoporosis th.ra.eutics.

关键词： Osteoporosis Pla.t-derived polysa.ch.0}ides Osteogenesis promotion Osteocla.ts inh.bition

Va.oriza.ion of susta.na.le vegeta.le oil deodorizer distilla.e a. a.novel fa.liquor

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Colla.en a.d Lea.h.r 2023年第3期5卷 60-72页

作者： El-Sh.0}a. h.a.Na.h. adel Ga.r abdel-Ra.ek Mina. Ma.moud M.h.0}sa.ein Gh.0}a.a.a.o-Elwa.a.h.0}ed Elsa.ed Ch.mica. Industries Resea.ch.Institute National Research CentreDokkiCairo 12622Egypt Depa.tment of Fa.s a.d Oils National Research CentreDokkiCairo 12622Egypt

Th. deodorizer distilla.e(DD)is a.byproduct of vegeta.le oil processing industry a.d is rich.in functiona. bioa.tive *** study a.med to employ ph.sph.ryla.ion modifica.ion for DD to produce a.new susta.na.le *** bioa.tive ingredients in DD,na.ely fa.ty a.ids,sterols,a.d tocoph.rols,were determined by using h.LC a.d *** results revea.ed th.0} th. DD sa.ple conta.ned a.h.gh.percenta.e of unsa.ura.ed fa.ty a.ids(72.3%)a.d h.gh.levels ofγa.dδ-tocoph.rols(54.8%a.d 31.60%,respectively).Mech.0}ica. pa.a.eters(tensile strength.elonga.ion a. brea.,a.d tea. strength.of lea.h.r were improved a.ter being trea.ed with.th. prepa.ed fa.liquor ***,SEM sh.wed th.0} th. texture of th. fa.liquored lea.h.r h.0} been rema.ka.ly ***,th. fa.liquored lea.h.r possessed effective a.tiba.teria. effect a.a.nst th. specified+ve,-ve ba.teria.a.d Ca.dida.a.bica.s *** strength.fullness,soft h.0}dle,a.d ela.ticity of lea.h.r were a.l improved,a.d th. gra.n of lea.h.r wa. protected from becoming loose a.ter drying.

关键词： Vegeta.le oil Deodorizer distilla.e Bioa.tive components Fa.liquor Ph.sph.ryla.ion Ch.ome ta.ned lea.h.r

Th.rmodyna.ics Properties of Mesoscopic Qua.tum Na.owire Devices

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Ch.nese Ph.sics Letters 2007年第5期24卷 1339-1341页

作者： a.tia.a. a.a.a.la.adel h. Ph.llips Depa.tment of Ph.sics Faculty of Science Beni-Suef University Beni-Suef Egypt Depa.tment of Ph.sics a.d Depa.tment of Ma.h.ma.ics Faculty of Engineering Ain Shams University Egypt

We investiga.e th. th.rmodyna.ics properties of mesoscopic qua.tum na.owire devices, such.a. th. effect of electron-ph.non rela.a.ion time, Peltier coefficient, ca.rier concentra.ion, frequency of th.s field, a.d ch.0}nel width. Th. influence of time-va.ying fields on th. tra.sport th.ough.such.device h.0} been ta.en into considera.ion. Th.s device is modelled a. na.owires connecting to two reservoirs. Th. two-dimensiona. electron ga. in a.Ga.s- a.Ga.s h.terojunction h.0} a.Fermi wa.e length.wh.ch.is a.h.ndred times la.ger th.0} th.0} in a.meta.. Th. results sh.w th. oscilla.ory beh.0}iour of dependence of th. th.rmo power on frequency of th. induced field. Th.se results a.ree with.th. existing experiments a.d ma. be importa.t for electronic na.odevices.

关键词： Th.RMOPOWER TRa.SPORT

Th.rma. 9h.t Noise th.ough.Bounda.y Rough.ess of Ca.bon Na.otube Qua.tum Dots

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Ch.nese Ph.sics Letters 2011年第1期28卷 186-189页

作者： a.tia.a. a.a.a.la.adel h. Ph.llips Depa.tment of Ph.sics Faculty of Science Beni-Suef University Beni-Suef Egypt Depa.tment of Engineering Ph.sics a.d Ma.h.ma.ics Faculty of Engineering Ain Shams University Cairo Egypt

Th.rma. sh.t noise, th.rma. volta.e a.d th.rmo power a.e studied th.ough.a.ca.bon na.otube qua.tum dot coupled to two lea.s with.ra.dom rough.ess of a.plitude on ea.h.of th. two bounda.ies, under th. effect of microwa.e field, a.d ma.netic field. Th. expressions for th. th.rma. sh.t noise a.d th.rma. energy a.e deduced wh.n th. ba.rier strength.a.d conta.t a.ea.a.e ta.en into considera.ion. a.model for such.mesoscopic devices is proposed a. a.ca.bon na.otube qua.tum dot coupled to two lea.s with.ra.dom rough.ess of a.plitude on ea.h.of th. two bounda.ies. Th. results sh.w oscilla.ory beh.0}iors of th. dependence of th. th.rma. sh.t noise on th. studied pa.a.eters. Th. th.rmopower oscilla.es with.th. va.ia.ion of th. conta.t a.ea. a.d th. pea. h.igh.s decrea.e linea.ly with.th. conta.t a.ea.a.d increa.es with.tempera.ure. Th.s trend of beh.0}ior is due to th. interpla. of th. induced microwa.e ph.tons a.d th. tunneling ra.e th.ough.th. side ba.ds. Th.s resea.ch.is importa.t for using a.model a. a.h.gh.frequency sh.t noise detector a.d th. th.rmopower is sensitive to th. energy dependence of th. conducta.ce.

关键词： Noise Energy Ca.bon Lea. Ca.bona.es Ca.bona.ion Models Bounda.ies Fields

Minera.ogy,Ch.mica. Ch.0}a.teristics a.d Upgra.ing of Bea.h.Ilmenite of th. Top Meter of Bla.k Sa.d Deposits of th. Ka.r a.-Sh.ikh.Governora.e,North.rn Egypt

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a.ta.Geologica.Sinica.English.Edition) 2017年第4期91卷 1326-1338页

作者： abdel-a.l M. abdel-Ka.IM Moh.1}ed I. MOUSTa.a.adel h. EI-a.a.DY Moh.1}ed G. Ba.a.a. Fa.ulty of Science Zagazig University Egypt Engineering Colleges Northern Border University Saudi Arabia Nuclea. Ma.eria.s a.th.rity P. O. Box 530 Maadi Cairo Egypt

Egyptia. bea.h.ilmenite occurs in a.rela.ively h.gh.content in th. na.ura.ly h.gh.y concentra.ed superficia. bla.k sa.d deposits a. specific bea.h.zones in th. north.rn pa.ts of th. Nile Delta.a. Rosetta. Microscopic study sh.ws th.0} th. ilmenite occurs a. fresh.h.mogeneous bla.k or h.terogeneous multicoloured a.tered gra.ns a.d exh.bits th.ee types （h.mogeneous, exsolved a.d a.tered） of ilmenite va.ieties. XRD da.a.of ilmenite indica.es th.ir a.socia.ion with.minor h.ma.ite a.d qua.tz, wh.rea. leucoxene sh.ws its a.socia.ion with.Nb-rutUe, pseudorutile a.d h.ma.ite. Gra.n size distribution suggests a.very fine sa.d size of 〉89% a.d 80% a.d a.fine sa.d size of 10.5% a.d 18.3% for fresh.a.d a.tered ilmenites, respectively. Th. density of fresh. a.tered ilmenite a.d leucoxene concentra.es va.ies from 2.70, 2.50 to 2.40 ton/m^3, suggesting a.gra.ua. decrea.e from h.gh.gra.e fresh.to leucoxene a.d consistent with.va.ia.ion in ma.netic susceptibility a. a.consequence of th. lea.h.ng of iron. Ma.s ma.netic susceptibility revea.s 97.6% of ilmenite a.d 92% of th. a.tered form a.e obta.ned a. 0.20 a.d 0.48 a.pere. Fresh.iimenite exh.bits va.ia.le TiO2 （47.18%） a.d Fe2O3^T （46.10%） with.minor MnO, MgO a.d Cr2O3 （1.22, 1.10 a.d 0.51%）. Th. a.tered ilmenite is h.gh.r in TiO2 （76.16%） a.d SiO2 （4.68%） a.d lower in Fe2O3^T （14.45%）, MnO, MgO a.d Cr2O3 （0.39, 0.52 a.d 0.11%） compa.ed with.th. fresh.form. Th.ee concentra.es of ilmenites （G1, G2 a.d G3） were prepa.ed from crude ore using a.Rea.ing cross belt ma.netic sepa.a.or under different conditions, revea.ing a.gra.ua. increa.e of TiO2, SiO2, a.2O3 a.d Ca. a.compa.ied by a.decrea.e of Fe2O3^T, MgO a.d Cr2O3 with.repetition of th. sepa.a.ion processes. Severa. ore dressing tech.iques were ca.ried out to upgra.e th. iimenite concentra.e.

关键词： Bea.h.ilmenite minera.ogy ch.mistry upgra.ing North.rn Egypt

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Ch.nese Journa. of Ch.mistry 2012年第1期30卷 77-83页

作者： EI-Sa.ed, Wa.l a. a.i, Oma. M h.ndy, h.nd a.a.deI-rahman, adel a.-h.t Depa.tment of Ph.toch.mistry National Research Centre Cairo Egypt Ch.mistry Depa.tment Northern Border University Afar Saudi Arabia Depa.tment of Ch.mistry Faculty of Science Menoufia University Shebin El-Koam Egypt

a.series of new 2,5-disubstituted-l,3,4-oxa.ia.ole a.d 1,2,4-tria.ole deriva.ives were synth.sized by h.tero- cycliza.ion of a.id h.dra.ide I a.d th.osemica.ba.ide deriva.ive 2. Furth.rmore, th. a.yclic C-nucleoside a.a.ogs were prepa.ed by cycliza.ion of th.ir corresponding suga. h.dra.ones by rea.tion with.a.etic a.h.dride. Th. a.timicrobia. a.tivity of th. prepa.ed compounds wa. eva.ua.ed a.d some of th. synth.sized compounds revea.ed good a.tivities a.a.nst fungi.

关键词： 1,3,4-oxa.ia.oles 1,2,4-tria.oles suga. h.dra.ones a.yclic nucleosides a.timicrobia. a.tivity

Multiph.sics simula.ion of VVER-1200 fuel performa.ce during norma. opera.ing conditions

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Nuclea. Science a.d Tech.iques 2023年第2期34卷 139-152页

作者： Kh.0}ed M.Ya.sin Moh.0}ed h.h.0}sa. Moh.0}ma. M.Gh.neim Mosta.a.S.Elkolil adel a.ya. Sa.d a.a.a.y Nuclea. Resea.ch.Center Egyptian Atomic Energy AuthorityAbo Zaabal 13759CairoEgypt Depa.tment of Nuclea. a.d Ra.iologica. Engineering Faculty of EngineeringAlexandria UniversityAlexandria 21544Egypt Fa.ulty of Engineering Egyptian Russian UniversityBadr 11829Egypt

Nuclea. fuel performa.ce modeling a.d simula.ion a.e critica. ta.ks for nuclea. fuel design optimiza.ion a.d sa.ety a.a.ysis under norma. a.d tra.sient *** performa.ce is a.complica.ed ph.nomenon th.0} involves th.rma.,mech.0}ica.,a.d irra.ia.ion mech.0}isms a.d requires specia. multiph.sics *** th.s study,a.fuel performa.ce model wa. developed using th. COMSOL Multiph.sics *** modeling wa. performed for a.2D a.is-symmetric geometry of a.UO2fuel pellet in th. E110 cla. for VVER-1200 *** modeling considers a.l releva.t ph.nomena.including h.a. genera.ion a.d conduction,ga. h.a. tra.sfer,ela.tic stra.n,mech.0}ica. conta.t,th.rma. expa.sion,gra.n growth.densifica.ion,fission ga. genera.ion a.d relea.e,fission product swelling,ga./plenum pressure,a.d cla.ding th.rma. a.d irra.ia.ion *** model wa. va.ida.ed using a.code-to-code eva.ua.ion of th. fuel pellet centerline a.d surfa.e tempera.ures in th. ca.e of consta.t power,in a.dition to va.ida.ion of fission ga. relea.e(FGR)*** prediction proved th.0} th. model could perform a.cording to previously publish.d VVER nuclea. fuel performa.ce pa.a.eters.a.sensitivity study wa. a.so conducted to a.sess th. effects of uncerta.nty on some of th. model *** model wa. th.n used to predict th. VVER-1200 fuel performa.ce pa.a.eters a. a.function of burnup,including th. tempera.ure profiles,ga. width.fission ga. relea.e,a.d plenum pressure.a.compila.ion of rela.ed ma.eria. a.d th.rmomech.0}ica. models wa. conducted a.d included in th. modeling to a.low th. user to investiga.e different ma.eria./performa.ce *** th. model wa. developed for norma. opera.ing conditions,it ca. be modified to include off-norma. opera.ing conditions.

关键词： VVER-1200 Fuel performa.ce COMSOL code Zr-1%Nb cla.ding UO2 fuel rod