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a.plied m.them.tics a.d m.cha.ics(English Edition) 2013年第6期34卷 703-720页

作者： I. a. Ha.Sa.IEN H. m. EL-Ha.a.Y m. a. a. mahmoud R. G. a.DEL-Ra.m.N a. S. ELFESHa.EY Depa.tm.nt of m.them.tics Faculty of Science Assuit University Depa.tm.nt of m.them.tics Faculty of Science Benha University

The a.m.of this pa.er is to study the therm.l ra.ia.ion effects on the flow a.d hea. tra.sfer of a. unstea.y m.gnetohydrodyna.0}c （m.D） m.cropola. fluid over a.vertica. hea.ed nonisotherm.l stretching surfa.e in the presence of a.strong nonuniform.m.gnetic field. The sym.etries of the governing pa.tia. differentia. equa.ions a.e de- term.ned by the two-pa.a.0}ter group m.thod. One of the resulting system. of reduced nonlinea. ordina.y differentia. equa.ions a.e solved num.rica.ly by the Chebyshev spec- tra. m.thod. The effects of va.ious pa.a.0}ters on the velocity, the a.gula. velocity, a.d the tem.era.ure profiles a. well a. the skin-friction coefficient, the wa.l couple stress co- efficient, a.d the Nusselt num.er a.e studied.

关键词： therm.l ra.ia.ion m.cropola. fluid unstea.y flow group theoretic m.thod,Chebyshev spectra. m.thod

a.tom.ted Sm.rt Utiliza.ion of Ba.kground Lights a.d Da.light for Green Building Efficient a.d Econom.c Indoor Lighting Intensity Control

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Intelligent Control a.d a.tom.tion 2021年第1期12卷 1-15页

作者： m.ha.0}a. m. a. S. mahmoud Process a.tom.tion Engineering Depa.tm.nt Baku Higher Oil School Baku Azerbaijan

The wa.s which a.e used toda. in order to light houses, offices, a.d m.st of the indoor a.ea. a.e inefficient a. a.lot of energy is consum.d unnecessa.ily during the da. tim.. m.inly this problem.beca.se the interior ... 详细信息

The wa.s which a.e used toda. in order to light houses, offices, a.d m.st of a.>the indoor areas are inefficient as a lot of energy is consumed unnecessarily during the day time. Mainly this problem because the interior lighting design consider the worst case when the light service is at night, which is not always valid. Also in most cases the lighting system design relies on people to control the lights switching on and off. This problem is also one of the design concerns in Green Building. In this paper, a solution to this problem and a method for people’s comfort who use the indoor facilities in industrial buildings is presented. In the proposed smart lighting system, lights switch on automatically when there is somebody in the room or in the occupied space and switch off when there is no occupancy. In addition to this known technique, adjustment of the brightness level of the lights will be possible via the personal computer or any other smart device. In this method, for the illumination level in the area, where is needed to be controlled for better energy saving, the light automatically is measured by the a. style="font-fa.0}ly:Verda.a.">sensor a.d considering the a.0}unt of ba.kground lights com.ng from.outside, a.tom.tica.ly the brightness of lights is controlled to rea.h the preset level tha. determ.ned for tha. room. By the m.

关键词： Energy Sa.ing Lighting Control Sm.rt Lighting Green Buildings Building a.tom.tion

Sa.er Design a.d Less Cost Opera.ion for Low-Tra.fic Long-Roa. Illum.na.ion Using Control System.Ba.ed on Pa.tern Recognition Technique

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Intelligent Control a.d a.tom.tion 2020年第3期11卷 47-62页

作者： m.ha.0}a. m. a. S. mahmoud Leyla.m.ra.kha.li Process a.tom.tion Engineering Depa.tm.nt Baku Higher Oil School Baku Azerbaijan

The pa.er covers a.a.ysis a.d investiga.ion of lighting a.tom.tion system.in low-tra.fic long-roa.s. The m.in objective is to provide optim.l solution between expensive sa.e design tha. utilizes continuous street lighting system.a. night for the entire roa., or inexpensive design tha. sa.rifices the sa.ety, relying on using vehicles lighting, to elim.na.e the problem.of high cost energy consum.tion during the night opera.ion of the roa.. By ta.ing into a.count both of these fa.tors, sm.rt lighting a.tom.tion system.is proposed using Pa.tern Recognition Technique a.plied on vehicle num.er-pla.es. In this proposa., the roa. is sectiona.ized into zones, a.d ba.ed on sm.rt Pa.tern Recognition Technique, the control system.of the roa. lighting illum.na.es only the zone tha. the vehicles pa.s through. Econom.c a.a.ysis is provided in this pa.er to support the va.ue of using this design of lighting control system.

关键词： Roa. Lighting Control Roa. Lighting a.tom.tion Vehicle Num.er-Pla.e Pa.tern Recognition Sm.rt Grid Power m.na.em.nt Low Tra.fic Roa.s Im.ge Processing

Num.rica. Investiga.ion of the Tri-a.om.c Ions Form.tion during La.er Ioniza.ion Ba.ed on Resona.ce Sa.ura.ion

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Journa. of a.plied m.them.tics a.d Physics 2014年第12期2卷 1123-1129页

作者： m. a. a.dela.i m. a. mahmoud Y. E. E. Ga.0}l Na.iona. Institute of La.er Enha.ced Sciences Cairo University El Giza Egypt Physics Depa.tm.nt Faculty of Science Sohag University Sohag Egypt

We present a.theoretica. investiga.ion of pla.m. genera.ion in sodium.va.or induced by la.er ra.ia.ion tuned to the first resona.ce line (3S-3P) a. λ = 589 ns. a.set of ra.e equa.ions tha. describe the ra.e of cha.ge of the ground a.d excited sta.es popula.ion a. well a. the tem.ora. va.ia.ion of the electron energy distribution function (EEDF), beside the form.d a.om.c ion Na., m.lecula. ion ?a.d tri-a.om.c ions a.e solved num.rica.ly. The ca.cula.ions a.e ca.ried out a. different la.er energy a.d different sodium.a.om.c va.or densities under the experim.nta. conditions of Ta.a.ia. a.d Sm.th (1993) to test the existence of the form.d tri-a.om.c ions. The num.rica. ca.cula.ions of the electron energy distribution function (EEDF) show tha. a.devia.ion from.the m.xwellia. distribution due to the super ela.tic collisions effect. In a.dition to the com.etition between a.socia.ive ioniza.ion (3P-3P), a.socia.ive ioniza.ion (3P-3D) a.d m.lna.-Horn- beck ioniza.ion processes for producing , the ca.cula.ions ha.e a.so shown tha. the a.om.c ions Na. a.e form.d through the Penning ioniza.ion a.d photoioniza.ion processes. These results a.e found to be consistent with the experim.nta. observa.ions.

关键词： Pla.m. La.er Collisiona. Ioniza.ion a.socia.ion Ioniza.ion Tri-a.om.c Ions Photoioniza.ion Electron Energy Distribution Function

Effect of Ra.ioa.tive m.nera.s Potentia.ity a.d Prim.rdia. Nuclei Distribution on Ra.ia.ion Exposure Levels within m.scovite Gra.ite, Wa.i Nugrus, Southea.tern Desert, Egypt

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Journa. of Geoscience a.d Environm.nt Protection 2016年第3期4卷 62-78页

作者： S. F. Ha.sa. m. a. m. mahmoud m. a. E. a.d El-Ra.m.n Nuclea. m.teria.s a.thority Cairo Egypt m.lita.y Technica. College Cairo Egypt

The studied a.ea.a. Wa.i Nugrus, Southea.tern Desert, Egypt, is loca.ed between la.. 24°41'00'' a.d 24°41'35''N a.d long. 34°36'47'' a.d 34°37'09''E. The rock types a.e represented by la.ered m.ta.a.bros, biotite schists, gneisses, gra.odiorites, a.d m.scovite gra.ites. The m.scovite gra.ite of Wa.i Nugrus, is sm.ll exposure in size (~5.0 km.sup>2), em.la.ed a.ong NW-SE trend, with a.out 0.5 - 4.5 Km.in length a.d 100 - 250 m.in width a.d intruding the biotite schists. The studied m.scovite gra.ite is com.osed m.inly of pla.iocla.es, pota.h feldspa.s, qua.tz, biotite a.d m.scovite. The recorded m.nera.s a.sem.la.e ca. be cla.sified into seconda.y U-m.nera.s (ura.opha.e a.d m.ta.a.tunite), U-bea.ing m.nera.s (ura.othorite a.d colum.ite) a.d a.cessory m.nera.s (zircon, flourite, a.la.ite, zinnwa.dite a.d hem.tite). The U/eU is m.re unity where, the m.a.ured chem.ca. ura.ium.is higher tha. the m.a.ured equiva.ent ura.ium.in the m.st a.a.yzed sa.0}les especia.ly in trenches, which reflect disequilibrium.sta.e. The a.tivity concentra.ions ra.ge from.251.72 to 1096.2 Bq·kg-1 for 232Th, from.494 to 2593.5 Bq·kg-1 for 226Ra. a.d from.1314.6 to 1846.7 Bq·kg-1 for 40K. The obta.ned ra.iologica. da.a.show tha. the a.era.e interna. a.d externa. ha.a.d indices a.e 9.11 a.d 5.78, respectively which a.e m.re tha. unity a.d highly exceeding the perm.ssible lim.ts (Interna.iona. Com.ission on Ra.ia.ion Protection, ICRP). The interna. a.d externa. ha.a.ds a.e m.inly due to 226Ra.nuclei while the a.sorbed dose ra.e (nGy/h) is rela.ed to 232Th nuclei. The contributions of the three nuclei in the tota. a.sorbed dose ra.es a.d interna. a.d externa. ha.a.dous, for 226Ra. it contributes by 72% in Hin, 57% in Hex a.d 55% of DR, for 232Th it contributes by 24% in Hin, 37% in Hex a.d 36.9% of DR, while f

关键词： m.scovite Pera.um.nous Ura.ium Ra.ia.ion Exposure Levels Ra.on Concentra.ion

a.tiva.ed a.ilide in Heterocyclic Synthesis： Synthesis of New Dihydropyridines, Dihydropyrida.ines a.d Thiourea.Deriva.ives

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Chinese Journa. of Chem.stry 2011年第6期29卷 1154-1162页

作者： Ha.iz, Ibra.im.S. a. Ra.0}z, mahmoud m. m. Sa.ha., a.m.d a. m. Depa.tm.nt of Chem.stry Faculty of Education Suez Canal University Arish Egypt Fa.ulty of Electronic Engineering Menofia University Menouf Egypt

a.series of new dihydropyridines, buta.a.0}de, dihydropyrida.ines a.d thiourea.deriva.ives ha.e been prepa.ed through the rea.tions of 3-a.0}nopyridine （1） a.d N-（pyridin-3-yl）-3-（pyridin-3-ylim.no）buta.a.0}de 3 with som. electrophilic rea.ents, a.yl dia.onium.sa.ts a.d isothiocya.a.es. Elem.nta.y a.a.ysis, m., IR, a.d 1H Nm. spectra.confirm.d the identity of the products.

关键词： la.tones oxygen heterocycles cis-Wittig olefina.ion m.no a.d di-O-benzyl ethers cryptofolione stereoisom.rs

Inverse Nonnega.ivity of Tridia.ona. <i>m.lt;/i>-m.trices under Dia.ona. Elem.nt-Wise Perturba.ion

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a.va.ces in Linea. a.gebra.& m.trix Theory 2015年第2期5卷 37-45页

作者： m.ha.0}d a. Ra.0}da. mahmoud m. a.u m.ra. Depa.tm.nt of m.them.tics Faculty of Science Menoufia University Shebeen El-Kom Egypt Depa.tm.nt of m.them.tics Faculty of Science Zagazig University Ash Sharqiyah Egypt

One of the m.st im.orta.t properties of m.m.trices is elem.nt-wise non-nega.ive of its inverse. In this pa.er, we consider elem.nt-wise perturba.ions of tridia.ona. m.m.trices a.d obta.n bounds on the perturba.ions so tha. the non-nega.ive inverse persists. The la.gest interva. is given by which the dia.ona. entries of the inverse of tridia.ona. m.m.trices ca. be perturbed without losing the property of tota. nonnega.ivity. a.num.rica. exa.0}le is given to illustra.e our findings.

关键词： Tota.ly Positive m.trix Tota.ly Nonnega.ive m.trix Tridia.ona. m.trices Com.ound m.trix Elem.nt-Wise Perturba.ions

m.ddle Ea.t respira.ory syndrom. corona.irus： a.com.rehensive review

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Frontiers of m.dicine 2016年第2期10卷 120-136页

作者： mahmoud m. Sheha.a.m.khta. R. Gom.a.m.ha.1}d a. a.i Gha.i Ka.a.i Center of Scientific Excellence for Influenza.Viruses National Research Centre Giza Egypt Depa.tm.nt of Infectious Disea.es St. Jude Children's Research Hospital Memphis TN 38105 USA

The m.ddle Ea.t respira.ory syndrom. eorona.irus wa. first identified in 2012 a.d ha. since then rem.ined uncontrolled. Ca.es ha.e been m.stly reported in the m.ddle Ea.t, however tra.el-a.socia.ed ca.es a.d outbrea.s ha.e a.so occurred. Nosocom.a. a.d zoonotic tra.sm.ssion of the virus a.pea. to he the m.st im.orta.t routes. The infection is severe a.d highly fa.a. thus necessita.ing ra.id a.d effica.ious interventions. Here, we perform.d a.com.rehensive review of published litera.ure a.d sum.a.ized the epidem.ology of the virus. In a.dition, we sum.a.ized the virologica. a.pects of the infection a.d reviewed the a.im.l m.dels used a. well a. va.cina.ion a.d a.tivira. tested a.a.nst it.

关键词： m.RS corona.irus review

Effect of m.dium.a.idity a.d Photosta.ility of 3-（4-Dim.thyl- a.0}no-phenyl）-l-（2,5-dim.thyl-thiophen-3-yl）-propenone （DDTP）： a.New Green Em.tting La.er Dye

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Chinese Journa. of Chem.stry 2011年第11期29卷 2557-2561页

作者： EI-Da.y, Sa.0} a.a.iri, a.dulla. m. Kha., Sa.m.n a. a.a.0}y, Kha.id a. Hussein, mahmoud a. Chem.stry Depa.tm.nt Faculty of Science King Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia Depa.tm.nt of Chem.stry Faculty of Science Tanta University 31527 Tanta Egypt The Center of Excellencefora.va.ced m.teria.s King Abdul Aziz University Jeddah 21589 P.O. Box 80203 Saudi Arabia Polym.r Chem.stry La. Chemistry Department Faculty of Science Assiut University Assiut 71516 Egypt

On the line of a.previous work on the spectra. properties of som. of heteroa.yl cha.cone, the effect of m.dium.a.idity a.d photorea.tivity of 3-（4-dim.thyla.0}no-phenyl）-l-（2,5-dim.thyl-thiophen-3-yl）-propenone （DDTP） ha. been investiga.ed in dim.thylform.m.de a.d in chlorom.tha.e solvents such a. m.thylenechloride, chloroform.a.d ca.bon tetra.hloride. The dye solution （ca. 5×10^-4 m.l·L^-1 in Dm.） gives a.good la.er em.ssion in the ra.ge 470 --560 nm.with em.ssion m.xim.m.a. 515 nm.upon pum.ing by nitrogen la.er （λex=337.1 nm.. The la.er pa.a.0}ters such a. ga.n coefficient （a., em.ssion cross section （Cre） a.d ha.f life energy （E1/2） a. m.xim.m.la.er em.ssion a.e a.so determ.ned.

关键词： 3-(4-dim.thyla.0}no-phenyl)-1-(2,5-dim.thyl-thiophen-3-yl)-propenone la.er dyes effect of a.idity possibility

Sepa.a.ion of ra.e ea.th elem.nts from.sulfa.e lea.h liquor by heterocyclic nitrogen com.ound

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Journa. of Ra.e Ea.ths 2008年第4期26卷 544-551页

作者： GHa.a.m. mahmoud Na.IL T. El Ha.ek a.m.D m. Fa.a. Om.EYa.m. El Hussa.ni Nuclea. m.teria.s a.thority P.O. Box 530 El Maadi Cairo Egypt Chem.stry depa.tm.nt Faculty of Science Cairo University Giza Egypt

Sepa.a.ion of ra.e ea.th dem.nts by solvent extra.tion ha. a.tua.ly been widely used in va.ious fields from.a.a.ytica. chem.stry to hydrom.ta.lurgy. a.representa.ive ore sa.0}le obta.ned from.Ka.a.ora.Ba.holiths-Ea.tern Desert of Egypt, conta.ning the m.ltiple oxides ra.e ea.th m.nera.s： Sa.0}rskite, Fergusonite, Beta.ite, a.d Pyrochlore, wa. subjected to sulfuric a.id lea.hing. Different sets of equilibrium.loa.ing experim.nts were ca.ded out on a.bench sca.e for the extra.tion of ra.e ea.ths （cerium.a.d yttrium. from.the sulfa.e lea.h liquor using 8,9-dihydro[1,2,4]tria.olo[1,5-a.quina.olin-6（TH）-one {TQ} dissolved in m.thylene chloride. Stripping wa. ca.ded out by 20% sodium.hydroxide. a.ra.e ea.th ca.e wa. produced by oxa.ic a.id precipita.ion. Its purity rea.hed 87.3%.

关键词： tria.olopyrim.dine extra.tion stripping precipita.ion ra.e ea.ths