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Interna.iona. Journa. of Orga.ic Chemis.ry 2011年第4期1卷 207-214页

作者： Fa.hi a. a.u-s.a.a. sayed a. s. mousa E. a. Es.a. a.med Z. sayed a.med a.-Ha.ra.i Depa.tment of Chemis.ry Faculty of Science Al-Azhar University

Rea.tion of N,N’-dimethylforma.ide dimethyl a.eta. (DMFDMa. with ma.ononitrile dimer 8 (1:1) mole a.forded 9 while, this.rea.tion when ca.ried out in (2:1) mole to give a.idine 11 which ca. be us.d for the prepa.a.ion of pyrimidine 13, a.idine 14 a.d pyridine 19 when rea.ted with 4-nitroa.iline, 4-methyla.iline a.d a.koxide res.ectively. Ma.ononitrile dimer rea.ted with dia.onium chloride to give pyrida.ine 21, which ca. be rea.ted with DMFDMa. a.OH/HCl a.d cya.oa.eta.ide to give pyrida.ine 22, 23 a.d pyrido[4,3-c] pyrida.ine 24 res.ectively. The la.ter rea.ted with DMFDMa.to a.ford tricyclic compound 25.

关键词： DMFDMA Ma.ononitrile Dimer Pyrida.ine-3 5-ca.bonitrile Pyridine-4-a.koxide

Prepa.a.ion of Polyfunctiona.ly s.bs.ituted Pyridine-2(1<i>H</i>)-Thione Deriva.ives.a. Precurs.rs.to Bicycles.a.d Polycycles

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Interna.iona. Journa. of Orga.ic Chemis.ry 2014年第5期4卷 319-330页

作者： Fa.hi a. a.u-s.a.a. sayed a. s. mousa s.erif M. s.erif Moha.ed I. Ha.s.0} Depa.tment of Chemis.ry Faculty of Science Al-Azhar University Assiut Egypt Depa.tment of Chemis.ry Faculty of Science Gazan University Gazan KSA Depa.tment of Chemis.ry Faculty of Science Cairo University Giza Egypt

Rea.tion of a.etyla.etone with 1 mole of dimethylforma.ide dimethyl a.eta. (DMFDMa. a.fords.ena.ine 2a.which rea.ts.with cya.othioa.eta.ide to give pyridinethione 3a. Pyridinethione 3a.rea.ts.with methyl iodide, ha.ogena.ed compounds. a.oma.ic a.dehyde a.d ma.ononitrile/elementa. s.lfur to yiled compounds.7-10 res.ectively. Rea.tions.of thioether 7 in etha.olic K2CO3, 1 mole DMFDMa.a.d 4-(dimethyla.ino)benza.dehyde give compounds.11, 13, 14 res.ectively. Ena.inone 12 ca. be prepa.ed by rea.tion of compound 11 with DMFDMa. We ha.e demons.ra.ed s.me rea.tions.in order to s.ow the potentia. us.fulnes. of the prepa.ed compounds.for the prepa.a.ion of new bipyridyl compounds.15, 16, 18, bicyclic compounds.17 a.d uncommon tricyclic compounds.20, 21, 22 a.d 23 res.ectively us.ng DMFDMa.

关键词： a.etyl a.etone DMFDMA Ma.ononitrile Dimmer Bipyridyl 5-a.etylpyridinethione

Dimethylforma.ide Dimethyl a.eta. (DMFDMa. in Heterocyclic s.nthes.s. s.nthes.s.of Polys.bs.ituted Pyridines. Pyrimidines. Pyrida.ine a.d Their Fus.d Deriva.ives

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s.nthes.s.a.d rea.tions.of s.me 6-a.yl a.d 2,6-dia.yl-4-(4'-a.tipyrinyl)-2,3,4,5-tetra.ydropyrida.in-3-ones.a.d s.reening for their a.tiba.teria. a.tivities

Interna.iona. Journa. of Orga.ic Chemis.ry 2011年第4期

作者： Fa.hi a. a.u-s.a.a. sayed a. s. mousa E. a. Es.a. a.med Z. sayed a.med a.-Ha.ra.i

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Chines. Journa. of Chemis.ry 1992年第5期10卷 475-480页

作者： sayed G. H. s.IBa.s. a. Ra.Wa. a. MOHa.ED s. M. KHa.IL M. Chemis.ry Depa.tment Faculty of Science Ain Shams University Abbassia Cairo Egypt a.-a.ha. Univers.ty for Girls Abbassia Cairo Egypt

s.me new pyrida.inone deriva.ives.3) were s.nthes.zed through a.dition of a.tipyrin to β- a.oyla.rylic a.ids.(1) followed by cycliza.ion of the a.ducts. Rea.tions.of 3 with ethyl bromoa.eta.e, benzenes.lfonyl chloride, benzoyl chloride a.d POCl_3 give N-s.bs.ituted products.a.d monochloros.b- s.ituted pyrida.ines.(4), res.ectively. The rea.tions.of the la.ter with thiourea.give unexpected dithio- deriva.ives.5), which rea.t with phenylhydra.ine to give pyra.olopyrida.ino pyrida.ine deriva.ives.(6). Rea.tions.of 2 with NH_2OH in etha.ol a.d pyridine a.ford oxime a.d oxa.inone deriva.ives.7 a.d 8, tes.ectively. The a.tiba.teria. a.tivities.of s.vera. compounds.were s.reened.

关键词： a.tipyrinyl tetra.ydropyrida.in-3-ones.a.d s.reening for their a.tiba.teria. a.tivities s.nthes.s.a.d rea.tions.of s.me 6-a.yl a.d 2,6-dia.yl-4

Microbia. detoxifica.ion of meta.a.yl in a.ua.ic s.s.em

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Journa. of Environmenta. s.iences 2008年第3期20卷 262-267页

作者： a.med H. Ma.s.ud a.y s. Derba.a. El-sayed. B. Bela. Pes.icides.Depa.tment Faculty of Agriculture Kafr El-Sheikh University. Kafr El-Sheikh 33516 Egypt a.riculture Microbiology Agriculture Botany Department Faculty of Agriculture Kafr El-Sheikh University Kafr El-Sheikh 33516 Egypt

Four microorga.is.s. Ps.udomona. s.. （ER2）, a.pergillus.niger （ER6）, Cla.os.orium herba.um （ER4） a.d Penicilluim s.. （ER3）, were is.la.ed from cucumber lea.es.previous.y trea.ed with meta.a.yl us.ng enrichment technique. Thes. is.la.es.were eva.ua.ed for detoxifica.ion of meta.a.yl a. the recommended dos. level in a.ua.ic s.s.em. The effect of pH a.d tempera.ure on the growth a.ility of the tes.ed is.la.es.wa. a.s. inves.iga.ed by mea.uring the intra.ellula. protein a.d mycelia.dry weight for ba.teria. a.d funga. is.la.es. res.ectively. Moreover, the toxicity of meta.a.yl a.ter 28 d of trea.ment with the tes.ed is.la.es.wa. eva.ua.ed to confirm the complete remova. of a.y toxic ma.eria.s.（meta.a.yl a.d its.meta.olites.. The res.lts.s.owed tha. the optimum degree pH for the growth of meta.a.yl degra.ing is.la.es.（ba.teria. a.d funga. is.la.es. wa. 7. The tempera.ure 30℃ a.pea.ed to be the optimum degree for the growth of either funga. or ba.teria. is.la.es. The res.lts.s.owed tha. Ps.udomona. s.. （ER2） wa. the mos. effective is.la.e in meta.a.yl degra.a.ion followed by a.pergillus.niger （ER6）, Cla.os.orium herba.um （ER4） a.d Penicilluim s.. （ER3）, res.ectively. There is.no toxicity of meta.a.yl detected in the s.pema.a.t a.ter 28 d of trea.ment with Ps.udomona. s.. （ER2）. The res.lts.s.gges. tha. bioremedia.ion by Ps.udomona. s.. （ER2） is.la.e wa. cons.dered to be effective method for detoxifica.ion of meta.a.yl in a.ueous.media.

关键词： meta.a.yl biodegra.a.ion microorga.is.s. toxicity

Experimenta. a.d ma.hema.ica. modeling of Cr(Ⅵ) remova. us.ng na.o-ma.netic Fe3O4-coa.ed perlite from the liquid pha.e

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Chines. Journa. of Chemica. Engineering 2020年第6期28卷 1582-1590页

作者： Is.a.l M.a.med Mos.a.a.M.Ha.ed sayed s.Metwa.ly Chemis.ry Depa.tment College of ScienceJouf UniversitySkakaSaudi Arabia Hot La.ora.ories.a.d Wa.te Ma.a.ement Center Atomic Energy Authority13759 CairoEgypt

Modifica.ion of perlite us.ng na.o-ma.netic iron oxide wa. implemented to produce na.o-ma.neticFe3O4-coa.ed perlite compos.te(Fe3O4/Perlite).The prepa.ed compos.te wa. cha.a.terized us.ng s.a.ning Electron Micros.opy,Fourier-Tra.s.orm Infra.ed s.ectros.opy a.d Powder X-ra. *** potentia.ity of both perlite a.d Fe3O4/Perlite compos.te to elimina.e Cr(VI)from the environmenta.ly releva.t wa.er wa. *** influence of ma.n fa.tors.which could a.fect the a.s.rption wa. s.udied including;pH of medium,s.a.ing time a.d Cr(VI)ions.*** experimenta. outcome demons.ra.ed tha. the modifica.ion of perlite by na.o-ma.netic Fe3O4 s.owed a.s.gnifica.tly enha.ced Cr(VI)remova. efficiency rela.ive to tha. of unmodified *** the kinetic s.udies.the experimenta. da.a.fitted well with the ps.udo-s.cond-order ***,it propos.s.tha. La.gmuir is.therm is.more a.equa.e tha. the Freundlich is.therm for both perlite a.d modified *** res.lts.recommended tha. Fe3O4/Perlite compos.te ha. a.grea. potentia. a. a. economic a.d efficient a.s.rbent of Cr(VI)from conta.ina.ed wa.er,which ha. huge a.plica.ion potentia..

关键词： Na.o-ma.netic Compos.te Kinetics Is.therm Perlite a.s.rption

Eva.ua.ing Biotic Elicita.ion with Phenyla.a.ine a.d/or Yea.t for Ros.ma.y (<i>Ros.a.inus.officina.s.lt;/i>L.) s.s.a.na.le Improvement under Tra.itiona. a.d Orga.ic a.riculture

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a.ricultura. s.iences 2021年第3期12卷 273-292页

作者： Ta.ek Elsayed s. a. El sayed s. a. Ra.iois.topes.Depa.tment Nuclear Research Center Egyptian Atomic Energy Authority Cairo Egypt

Ros.ma.y (Ros.rinus.officina.s. is.one of the mos. importa.t medicina. pla.ts.wa. cultiva.ed for two s.bs.quent s.a.ons.field experiment tria. (Ma.ch 2018, 2019) des.gned a. fa.toria. s.lit-plot des.gn with three repl... 详细信息

Ros.ma.y (Ros.rinus.officina.s./em>) is.one of the mos. importa.t medicina. pla.ts.wa. cultiva.ed for two s.bs.quent s.a.ons.field experiment tria. (Ma.ch 2018, 2019) des.gned a. fa.toria. s.lit-plot des.gn with three replica.es. The ma.n fa.tor 4 biotic elicitors. control (Es.b>1s.b>), phenyla.a.ine (Es.b>2s.b>), yea.t (Es.b>3s.b>) a.d (E4), E2 + F3 Wherea., the s.b-ma.n fa.tor, four fertilizers. (F1) NPK, (F2) 1/2NPK + PGPB a.d humic a.id + PGPB (Fs.b>3s.b>), a.d moringa.dry lea.es.extra.t. + PGPB (Fs.b>4s.b>). s.a.is.ica. a.a.ys.s.for collected da.a.revea.ed s.gnifica.t promotion for growth tra.ts.lea.ing to s.gnifica.t increment bioma.s.yield, s.conda.y meta.olites.production a.d qua.ity. Tota. phenolics. tota. fla.onoids.a.d es.entia. oil its.terpenes.contents.in which s.lita.y, E2, E3 a.ted pos.tive s.gnifica.t impa.t while E4exhiboted s.gnifica.t pos.tive impa.t over E1 wherea., F1-4 a.hieved s.gnifica.t increment in which, biofertils.r f4 > f3 > f2 over NPK biofertils.r, while pa.red E1-4 with F1-4 performed E4E4 exceeded E3F3 exceeded E3F2 tha. exceeded E1F1. Therefore, multi-repea.ing elicita.ion with E2, 3, 4 coupled with Biofertilizers.F2, 4 could be cons.dered a. eco-friendly innova.ive relia.le pra.tica. a.plica.ion for s.s.a.na.le improvement a.d s.s.a.na.le us. tha. exceeded s.gnifica.tly over tra.itiona. a.riculture NPK a.one or 1/2 NPK-PGPB for R. officina.s./em>.

关键词： Ros.ma.y a.oma.ic Pla.t Medicina. Pla.t Elicita.ion Biotic Elicitor

Ba.es.a. belief-ba.ed model for relia.ility improvement of the digita. rea.tor protection s.s.em

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Nuclea. s.ience a.d Techniques 2020年第10期31卷 55-73页

作者： Ha.a. Torkey a.a.y s.s.0}er Moha.ed K.s.a.t a.ma. El-sayed Ma.wa.a.s.ouma. Fa.ulty of Electronic Engineering Menoufia UniversityCairoEgypt Nuclea. Res.a.ch Center Egyptian Atomic Energy AuthorityCairoEgypt

The digita. rea.tor protection s.s.em(RPs.is.one of the mos. importa.t digita. ins.rumenta.ion a.d control(I&C)s.s.ems.utilized in nuclea. power pla.ts.NPPs..It ens.res.a.s.0}e rea.tor trip when the s.0}ety-rela.ed pa.a.eters.viola.e the opera.iona. limits.a.d conditions.of the *** high relia.ility a.d a.a.la.ility of digita. RPs.is.es.entia. to ma.nta.ning a.high degree of rea.tor s.0}ety a.d cos. *** ma.n objective of this.s.udy is.to develop a.genera. methodology for improving the relia.ility of the RPs.in NPP,ba.ed on a.Ba.es.a. Belief Network(BBN)*** s.ructure of BBN models.is.ba.ed on the incorpora.ion of fa.lure proba.ility a.d downtime of the RPs.I&C *** a.chitectures.with dua.-s.a.e nodes.for the I&C components.were developed for relia.ility-s.ns.tive a.a.ys.s.a.d a.a.la.ility optimiza.ion of the RPs.a.d to demons.ra.e the effect of I&C components.on the fa.lure of the entire s.s.em.a.relia.ility fra.ework cla.ified a. a.relia.ility block dia.ra. tra.s.ormed into a.BBN repres.nta.ion wa. cons.ructed for ea.h a.chitecture to identify which one will fit the required *** res.lts.s.owed tha. the highes. a.a.la.ility obta.ned us.ng the propos.d method wa. *** a.e 120 experiments.us.ng two common component importa.ce mea.ures.tha. a.e a.plied to define the impa.t of I&C modules.which revea.ed tha. s.me modules.a.e more ris.y tha. others.a.d ha.e a.la.ger effect on the fa.lure of the digita. RPs.

关键词： Nuclea. power pla.ts Rea.tor protection s.s.em Ba.es.a. belief network

s.cret Key Optimiza.ion for s.cure s.eech Communica.ions

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Computers. Ma.eria.s.& Continua 2022年第8期72卷 3025-3037页

作者： Os.0}a.s.Fa.a.a.la. Ma.moud Fa.ouk Ha.a.s.El-sayed Depa.tment of Informa.ion Technology College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Depa.tment of Computer s.ience a.d Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf 32952Egypt Depa.tment of Electrica. Engineering Faculty of EngineeringMenoufia UniversityShebin El-Kom 32511Egypt

This.pa.er a.s.ers.three es.entia. ques.ions.for a.dio s.eech cryptos.s.ems.in time a.d dis.rete tra.s.orm *** firs. ques.ion is.wha. a.e the bes. va.ues.of s.b-keys.tha. mus. be us.d to get the bes. qua.ity a.d s.curity for the a.dio cryptos.s.em in time a.d dis.rete tra.s.orm *** s.cond ques.ion is.the rela.ion between the number of s.b-keys.the number of s.cret keys.us.d,a.d the a.dio s.eech s.gna. block’s.***,how ma.y pos.ible s.cret keys.ca. be us.d to get the bes. qua.ity a.d s.curity res.lts.for the a.dio s.eech cryptos.s.em in time a.d dis.rete tra.s.orm *** a.dio cryptos.s.em dis.us.ed before in recent res.a.ch is.a.plied to a.s.er the three previous.*** s.mula.ion res.lts.a.d a.a.ys.s.a.s.er a.l three ques.ions.firs.,there is.no s.ecific,well-defined forma. or rule for s.b-key va.ues.tha. mus. be us.d to get a.better *** the s.cond ques.ion,yes.there is.a.direct rela.ions.ip between the number of a.plica.le keys.number of a.a.la.le s.b-keys.a.d block s.ze of s.eech a.dio s.gna. a.d formula.ed into a.firs.-order *** the third ques.ion,ea.h dis.rete tra.s.orm doma.n ha. a.s.ecific a.cepta.le ra.ge of s.b-keys.tha. imply a.pa.ticula. number of keys.tha. ca. be us.d to get a.better cryptos.s.em.

关键词： a.dio cryptos.s.em cha.tic ba.er ma. s.cret key s.ze

Yttria.Tetra.ona. Zirconia.Bioma.eria.s.Kinetic Inves.iga.ion

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Journa. of Ma.eria.s.s.ience & Technology 2011年第4期27卷 332-337页

作者： Ezza. s.Els.a.ly s.M.El-Hout M.El-sayed a.i Depa.tment of Mecha.ica. Engineering Virginia Commonwealth University Depta.tment of Meta.lurgy Nuclear Research CenterAtomic Energy Authority

The low tempera.ure a.ing beha.ior of polycrys.a.line tetra.ona. zirconia.wa. inves.iga.ed to explore the effects.on pha.e tra.s.orma.ion occurring during the proces.. XRD a.a.ys.s.wa. conducted for the pha.e identifica.ion a.d the tetra.ona. to monoclinic pha.e tra.s.orma.ion wa. determined. The a.ing of tetra.ona. zirconia.polycrys.a.s.doped with 3 mol% Y203 triggers.tetra.ona. to monoclinic pha.e tra.s.orma.ion on the s.rfa.e of the s.ecimen only, while the penetra.ion ins.de the bulk of the s.ecimen is.very limited. a.s.ight decrea.e in the mecha.ica. properties.wa. a.s. obs.rved a.ter a.ing for 40 h. The tra.s.orma.ion kinetics.s.ow a.nuclea.ion a.d growth mecha.is. on the s.ecimen s.rfa.e to be domina.t in the low tempera.ure a.ing in wa.er environment.

关键词： Low tempera.ure degra.a.ion 3Y-TZP Kinetics