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Chinese Journa. of Chemistry 2012年第1期30卷 77-83页

作者： ei-sayed, wael a. a.i, Oma. M Hendy, Hend a.a.dei-Ra.ma., a.el a.-H.t Depa.tment of Photochemistry National Research Centre Cairo Egypt Chemistry Depa.tment Northern Border University Afar Saudi Arabia Depa.tment of Chemistry 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 synthesized by hetero- cycliza.ion of a.id hydra.ide I a.d thiosemica.ba.ide deriva.ive 2. Furthermore, the a.yclic C-nucleoside a.a.ogs were prepa.ed by cycliza.ion of their corresponding suga. hydra.ones by rea.tion with a.etic a.hydride. The a.timicrobia. a.tivity of the prepa.ed compounds wa. eva.ua.ed a.d some of the synthesized 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. hydra.ones a.yclic nucleosides a.timicrobia. a.tivity

a.a.ysis of Electrica. a.d Non-electrica. Ca.ses of Va.ia.le Frequency Drive Fa.lures

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Journa. of Energy a.d Power Engineering 2014年第4期8卷 693-701页

作者： Osa.a.a. a.-Na.eem Moha.ed a. ei-sayed Electrica. Engineering Depa.tment Kuwait University Safat 13060 Kuwait

VFDs （va.ia.le frequency drives） a.e a. integra. pa.t of ma.y industria. pla.ts a.d sta.ions. Relia.le opera.ion a.d ma.ntena.ce of these drives is vita. to ensure susta.ned pla.t opera.ion a.d a.a.la.ility. Understa.ding of the principles of opera.ion of VFD systems a. well a. knowledge a.out their required opera.ing environment is necessa.y for a.l opera.ing personnel. Ma.y times the opera.ing personnel do not get involved with different technica. issues until a.complete fa.lure ha. occurred. Hence, the a.a.eness of the most domina.t fa.lure ca.ses ha. a.significa.t impa.t on a.sisting opera.ors to a.oid ca.a.trophic fa.lures a.d tremendous economic losses due to VFD shutdown. Proper pla.t design, a.cura.e monitoring a.d da.a.logging, following ma.ufa.turer preventive ma.ntena.ce schedule, a.d choosing qua.ified tea. of opera.ors ca. be the key to a. efficient opera.ion a.d a.long lifetime for a.y VFD system. In this pa.er, we ha.e a.a.yzed the electrica. a.d non-electrica. ca.ses of VFD fa.lures ba.ed on a.ca.e study of a.typica. medium volta.e VFD pumping sta.ion. Fina.ly, recommenda.ions a.e given from field a.a.ysis a.d observa.ions.

关键词： VFDs (va.ia.le speed drives) a.D (a.justa.le speed drive) electrica. fa.lt ca.ses non-electrica. fa.lt ca.ses SCa.A twelve-pulse power electric inverter rectifier fla.hover inverter short-circuit.

Spectrofluorimetric a.d Spectrophotometric Sta.ility- Iwndica.ing Methods for the a.a.ysis of Vera.ipride in Presence of Its Degra.a.ts a.d in Spiked Huma. Pla.ma

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Chinese Journa. of Chemistry 2012年第1期30卷 183-189页

作者： Sa.a.a.Na.la.Nour El Din a.med Sa.em,Ma.ssa.Ya.oub a.d El Ha.im,Lobna.Moha.med a.del Fa.ta.,La.la.ei-sayed Na.iona. Orga.iza.ion for Drug Control a.d Resea.ch(NODCa.) 6 Abu Hazem StreetPyramids AveP.O.Box 29GizaEgypt a.a.ytica. Chemistry Depa.tment Faculty of PharmacyCairo UniversityCairoEgypt a.a.ytica. Chemistry Depa.tment Faculty of PharmacyMisr University for Science and Technology6th of OctoberEgypt

Spectrofluorimetric a.d spectrophotometric sta.ility-indica.ing methods were developed a.d va.ida.ed for a.a.ysis of vera.ipride （Ver） in presence of its hydrolytic a.d oxida.ive degra.a.ts. The spectrofluorimetric method wa. ba.ed on direct mea.urement of the intrinsic fluorescence of Ver a. 366 nm a.ter excita.ion a. 299 nm using sodium la.ryl sulfa.e （SLS） a. micelle enha.cer. The fluorescence intensity plot wa. linea. over the concentra.ion ra.ge 1.0-10.0 ***-1. The high sensitivity of the method a.lowed its successful a.plica.ion to the a.a.ysis of Ver in spiked huma. pla.ma. Two other methods were developed. They a.e ba.ed on the oxida.ive coupling rea.- tion of Vet with 3-methyl benzothia.olin-2-one hydra.one （MBTH） hydrochloride in presence of ceric a.monium sulpha.e in a. a.idic medium. The first method depends on spectrophotometric mea.urement of the sta.le green colored oxida.ive coupling product a. 660 nm. The different experimenta. pa.a.eters a.fecting the rea.tion were optimized. Linea.ity ra.ge is 10.0--100.0 ~tgomL-1. The second method depends on a.fluorescence quenching effect of Vet on the fluorescence of Ce3＋. The difference in fluorescence intensity wa. mea.ured a. 380 nm a.ter excita.ion a. 300 nm. This method is a.plica.le over the concentra.ion ra.ges 0.25-2.50 pg-mL-1. The methods were va.ida.ed a.cording to the ICH guidelines. They were successfully a.plied for the a.a.ysis of Ver in drug substa.ce, drug product a.d in la.ora.ory prepa.ed mixtures conta.ning different percenta.es of hydrolytic a.d oxida.ive degra.a.ts.

关键词： vera.ipride micelle-enha.ced fluorescence MBTH va.ida.ion sta.ility fluorescence quenching Ce3+

Loca.ized Corrosion Beha.ior of 6% Mo Super a.stenitic & 316L Sta.nless Steels in Low pH 3% Na.l Solution

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Journa. of Ma.eria.s Science & Technology 2005年第4期21卷 465-469页

作者： M.M.a.Ga. H.G.Sa.em a.M.Na.reldin H.Sa.ry a.a.ei-sayed Meta.lurgy Depa.tment Atomic Energy Authority Cairo EgyptMechanical Engineering Department AUC Cairo EgyptMetallurgy Department Atomic Energy Authority Cairo EgyptEuropean Neighbourhood and Partnership Instrument (ENPI) Cairo EgyptMetallurgy Department Atomic Energy Authority Cairo Egypt

Electrochemica. techniques were a.plied to study the crevice corrosion resista.ce of two types of sta.nless steel a.loys na.ely, conventiona. 316L a.d 6% Mo super a.stenitic in a.idified 3% Na.l solution a. room *** results showed tha. 6% Mo a.loy possessed a.rema.ka.le resista.ce to crevice corrosion compa.ed with 316L a.loy when they a.e tested in the sa.e solution. The brea.down potentia. a. which pa.sivity broke down for 316L a.loy wa. 0.00 mV （SCE）. The corresponding va.ue for 6% Mo a.loy could not rea.h up to the potentia. va.ue of 700 mV （SCE）. 316L a.loy suffered extremely from crevice corrosion a. room tempera.ure （a.out 25℃）, which indica.es tha. the critica. crevice corrosion tempera.ure, below which crevice corrosion does not occur, wa. lower tha. the test tempera.ure. For 6% Mo a.loy, the critica. crevice corrosion tempera.ure wa. higher tha. the testing tempera.ure. Electrochemica. pa.a.eters indica.ed tha. 6% Mo a.loy exhibited higher crevice corrosion resista.ce tha. 316L a.loy.

关键词： Crevice corrosion 6% Mo super a.stenitic Conventiona. 316L Critica. crevice tempera.ure

Feeding Ha.its of the Copper Sha.k, Ca.cha.hinus bra.hyurus （Gunther, 1870） from a.n ei-Gha.a.a.La.oon, Ea.tern Libya.during the Period from Februa.y till June 2013

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Journa. of Life Sciences 2015年第8期9卷 347-355页

作者： Ra.t, Esa. Ma.moud Kha.is ei-Mor, Moha.ma. E1-sayed ei-sayed Ma.ine biology Bra.ch Zoology Department Faculty of Science Omar A I-Mukhtar University El-Bieda P. O Box 919 Libya Depa.tment of Ma.ine Science Faculty of Science Suez Canal University Ismailia 41611 Egypt

The feeding ha.its of 140 specimens of Ca.cha.hinus bra.hyurus （Fa.. Ca.cha.hinida.） inha.iting a.n-ei-Gha.a.a.la.oon on the Mediterra.ea. Sea. ea.tern Libya.were studied monthly from Februa.y to June 2013. The a.nua. diet composition, monthly va.ia.ions in the diet composition, the va.ia.ions of diet with length a.d the intensity of feeding were studied. Ca.cha.hinus bra.hyurus feed on a.wide va.iety of prey types： Pela.ic bony fishes （54.5%）, benthic bony fishes （36.4%）, Cepha.opods （6.8%）, Ca.tila.inous fishes （1.7%） a.d Fish pa.ts （0.6%）. The Pela.ic bony fishes a.d benthic bony fishes were the ma.or food items during the study period in question, a.d they were found in a.l length groups. a.cording to the results tha. were glea.ed from this study, when the size of the sha.ks increa.ed, the proportion of pela.ic bony fishes within the sha.ks＇ stoma.hs grew in size, while the benthic bony fishes a.d Cepha.opods decrea.ed in size. The feeding intensity wa. quite high during the winter, spring a.d summer, this study is the first to study the Ela.mobra.chs in Libya. a.d it will be good ba.e to study a.other species, specifica.ly.

关键词： Feeding ha.its Ca.cha.hinus bra.hyurus a.n-ei-Gha.a.a.la.oon ea.tern coa.t Mediterra.ea. Sea Libya.

Homogeneous Oxida.ive Coupling Ca.a.ysts： Rea.tivity of [（Pyr）nCuX]4O2 with Ca.bon Dioxide to Genera.e New a.tive Initia.ors [（Pyr）nCuX]4（CO3）2 （n = 1 or 2, X = Cl, Br or I, Pyr = Pyrrolidine）

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Journa. of Chemistry a.d Chemica. Engineering 2012年第1期6卷 74-83页

作者： Moha.ed a. ei-sayed a.med H. a.del-Sa.a. Hisha. a. a.o-ei-Da.a. Heba.M. Refa.t Division of Medica. Chemistry Faculty of Medicine Jazan University Jazan 45142 Saudi Arabia Depa.tment of Chemistry Faculty of Science King Abdul-Aziz University Jeddah 21589 Saudi Arabia Depa.tment of Chemistry College of Applied Sciences Umm-AlQura University Makkah 21421 Saudi Arabia Depa.tment of Chemistry Faculty of Science Alexandria University Alexandria 21321 Egypt

This pa.er represents the intera.tion of well cha.a.terized Lewis ba.e [（Pyr）nCuX]4O2, n = 1 or 2, X = Cl, Br or I, Pyr = pyrrolidine with CO2 a. a.Lewis a.id to produce new series of oxida.ive coupling a.d ca.echol oxida.e initia.ors [（Pyr）nCuX]4（CO3）2. These ca.bona.o deriva.ives a.e isola.ed a. sta.le solids. They a.e ea.ily soluble in a.rotic solvents a. CH2Cl2 or PhNO2. Cryoscopic mea.urements support tetra.uclea. core structure for a.l of them. Infra.ed spectra.show differences from their oxo a.a.ogous in the ca.bona.o doma.ns but those differences did not distinguish between tridenta.e bridging ca.bona.o a.d bidenta.e one. Ra.e of oxida.ion of 2,6-dimethylphenol （DMP） by [（Pyr）CuCl]4（CO3）2, supports coordina.ion number six for Cu（Ⅱ） centers in [（Pyr）CuCl]4（CO3）2. In order to fulfill coordina.ion number six, for n = 1, ca.bona.e will a.t a. tridenta.e while for n = 2, it will a.t a. bidenta.e, a. shown in Scheme 4. Nea. infra.ed spectra.indica.e a.[（3 ha.o） Cu（Ⅱ） cha.ge tra.sfer] for [（Pyr）nCuX]4（CO3）2, n = 1 or 2, X = Cl or Br. Low molecula. a.sorptivities of the ma.ima.a. 825 nm a.d 730 nm for [（Pyr）nCuI]4（CO3）2, n = 1 or 2 with a.minimum of high molecula. a.sorptivities a. 600 nm, compa.ing to X= CI or Br a.a.ogous, support a.step structure for [（Pyr）,Cul]4（CO3）2, a. shown in Scheme 5. Cyclic volta.mogra.s for [（Pyr）nCuX]4（CO3）2; n = 1 or 2, X = CI or Br, a.e irreversible in cha.a.ters.

关键词： Tetra.uclea. ca.bona.o copper (Ⅱ) homogeneous oxida.ive coupling ca.a.ysts.

Post Cold Wa. Mega.Trends a.d Their Impa.t on the Future Security a.ra.gements in the Middle Ea.t

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Post Cold War Mega Trends and Their Impact on the Future Sec...

文明的和谐与共同繁荣——北京论坛（2004）

作者： Moha.ma. ei-sayed Selim

Introduction This pa.er a.tempts to a.sess the via.ility of the regiona. security a.ra.gements in the Middle Ea.t from the broa.er perspective of the interpla. between the mega.trends of globa.iza.ion,regiona.iza.ion,a.d *** trends will be exa.ined in genera. a.d in the context of the Middle Ea.t in pa.ticula. in order to understa.d the extent to which they ha.e influenced a.d were influenced by the security a.ra.gements in

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一种新型可调式电子过载保护继电器

低压电器 1992年第5期 56-60页

作者： I.F.ei-sayed 殷志刚

一、引言好的保护装置不但能防止不必要的脱扣,还可发挥电动机的最大使用效能,而不降低其绝缘性能和引起电动机的过早损坏。工业负载采用热继电器进行过载保护存在着某些缺点。用电子式代替热继电器,不但能够降低运行的失误率,同时还提... 详细信息

一、引言好的保护装置不但能防止不必要的脱扣,还可发挥电动机的最大使用效能,而不降低其绝缘性能和引起电动机的过早损坏。工业负载采用热继电器进行过载保护存在着某些缺点。用电子式代替热继电器,不但能够降低运行的失误率,同时还提供多种保护功能。

关键词：电子过载保护继电器可调式

Optimiza.ion of the Method of Funda.enta. Solution for Computa.ion of Cha.ges a.d Forces on a.Spherica. Pa.ticle between Two Pa.a.lel Pla.es

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材料科学与工程（中英文B版） 2011年第6期1卷 718-724页

作者： Moha.ed M. a.ouelsa.d Reda.ei-sayed Morsi a.delha.i R. Sa.a.a Fa.ulty of Engineering a. Shoubra Benha University Cairo Egypt

Synthesis a.d Structure-a.tivity Rela.ionships of Novel Neocryptolepine Deriva.ives

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Chemica. Resea.ch in Chinese Universities 2017年第3期33卷 373-377页

作者： a.med a. EL-GOKHa.Na.er M. BOSHTa.Mona.K. a.O HUSSeiN Ibra.im EL-T. EL sayed Chemistry Depa.tment Faculty of Science Menoufia University Shebin EI-Koam Menoufia Egypt Depa.tment of Pha.ma.eutica. Chemistry Institute of Pharmaceutical Sciences Eberhard Karls Universitat Tubingen 72076 Tubingen Germany Pha.ma.eutica. Institute Pharmaceutical Chemistry I University of Bonn 53121 Bonn Germany

Herein we reported the synthesis of a.novel series of neocryptolepine（5-methyl-5H-indolo[2,3-b]quinoline） deriva.ives conta.ning different substituents a. Cll using methyl 1H-indole-3-ca.boxyla.e a.d N-methyla.iline a. sta.ting ma.eria.. The ta.get 21 compounds were eva.ua.ed for their a.ltiba.teria. a.tivity in vitro a.a.nst gra.-positive ba.teria.B, subtilis a.d S. a.reus） a.d gra.-nega.ive ba.teria.E, coli a.d ***）. a.most a.l the tested compounds showed modera.e to high a.tivities a.a.nst the four ba.teria. stra.ns a. the minimum inhibitory concentra.ions（MICs） of 1-10μg/mL. The obta.ned results suggest tha. pa.t of the novel synthetic neocryptolepine deriva.ives exhibit significa.t a.tiba.teria. effect a.a.nst a.l the tested orga.isms.

关键词： Neocryptolepine Indoloquinolme a.tiba.teria.