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Synthesis, Structura. Cha.a.teriza.ion, a.d a.timicrobia. a.tivities of mn（II）, Co（II）, Ni（II）, Cu（ll） a.d Zn（II） Complexes of Tria.ole-ba.ed a.odyes

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Chinese Journa. of Chemistry 2011年第6期29卷 1124-1132页

作者： khedr, a.da.la.m. Ga.er, moha.ed a.d ei-Za.er, Ema. H. Chemistry depa.tment Faculty of Science Tanta University Tanta Egypt Bota.y depa.tment Faculty of Science Tanta University Tanta Egypt

The synthesis a.d cha.a.teriza.ion of new tra.sition meta. complexes of mn（ll）, Co（II）, Ni（II）, Cu（II） a.d Zn（II） with 3-（2-hydroxyna.h-l-yla.o）-1,2,4-tria.ole （HL1） a.d 3-（2-hydroxy-3-ca.boxyna.h-l-yla.o）-1,2,4-tria.ole （HL2） ha.e been ca.ried out. Their structures were confirmed by elementa. a.a.yses, therma. a.a.yses, spectra. a.d ma.netic da.a. The IR a.d 1H NmR spectra.indica.ed tha. HL1 a.d HL2 coordina.ed to the meta. ions a. bidenta.e monoba.ic liga.ds via.the hydroxyl O a.d a.o N a.oms. The UV-Vis, ESR spectra.a.d ma.netic moment da.a.revea.ed the forma.ion of octa.edra. complexes [mnL1（a.O）（H2O）3] （1）, [CoL1（a.O）（HzO）3]·H2O （2）, [mnL2- （a.O）（H20）3] （6） a.d [CoL2（a.O）（H2O）3] （7）, [NiL1（a.O）（H2O）] （3）,[ZnLI（a.O）（HzO）]·H2O （5）, [NiL2- （a.O）（H2O）] （8）, [ZnL2（a.O）（H2O）]·H2O （10） ha.e tetra.edra. geometry, wherea. [CuLI（a.O）（H2O）2] （4） a.d [CuL2（a.O）（H2O）2]·5H2O （9） ha.e squa.e pyra.ida. geometry.. The ma.s spectra.of the complexes under ei-con- ditions showed the highest pea.s corresponding to their molecula. weights, ba.ed on the a.omic weights of 55mn, 59Co, 58Ni, 63Cu a.d 64Zn isotopes; besides, other pea.s conta.ning other isotopes distribution of the meta.. kinetic a.d thermodyna.ic pa.a.eters of the therma. decomposition sta.es were computed from the therma. da.a.using Coa.s-Redfern method. HL2 a.d complexes 6--10 were found to ha.e modera.e a.timicrobia. a.tivities a.a.nst Sta.hylococcus＇ a.reus （gra. positive）, Escherichia.coli （gra. nega.ive） a.d Sa.monella.sp ba.teria. a.d a.tifunga. a.tivity a.a.nst Fusa.ium oxysporum, a.pergillus niger a.d Ca.dida.a.bica.s. a.so, in most ca.es, meta.la.ion increa.ed the a.tivity compa.ed with the free liga.d.

关键词： a.a.ytica. a.d inorga.ic chemistry tria.ole a.odyes meta.(II) chela.es a.timicrobia. a.tivities

Corrosion Beha.iour of Sta.nless Steel in a.idic Wa.er-Orga.ic Solvent mixtures

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Journa. of ma.eria.s Science & Technology 1994年第6期10卷 411-417页

作者： a..a.khedr I.Z.Selim k.m.El-sobki a.d O.S.Sheha.a.Physica. Chemistry dept., Na.iona. Resea.ch Centre, dokki, Ca.ro, Egypt) Na.l Resea.ch Cent Cairo Egypt

Electrochemica. beha.iour of sta.nless steel type 430 in a.idic solutions of metha.ol, etha.ol a.d in their bina.y mixtures with wa.er (from 0 to 100% a.cohol) a. 25℃ ha. been studied. using potentiosta.ic poIa.iza.ion technique a.d weight loss method. It wa. found tha. the corrosion ra.e of the meta. wa. a.fected by the physico-chemica. properties of the media.such a., viscosity, sta.e of solva.ion, mola. volume contra.tion, proton a.a.la.ility a.d dielectric consta.t, it wa. demonstra.ed from the potentiosta.ic study tha. the a.tive pa.sive tra.sition strongly depended on the concentra.ion of the a.id, a.d on the wa.er content of the media.

关键词： Beha.iour vent Singh centra.ion a.cohol viscosity Figure tra.tion mined Fa.a.a.

Effect of Ni^(+2)-substituted Fe_2TiO_5 on the H_2-reduction a.d CO_2 Ca.a.ytic decomposition Rea.tions a. 500℃

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Journa. of ma.eria.s Science & Technology 2006年第6期22卷 846-850页

作者： m.H.khedr Chemistry depa.tment Faculty of ScienceBenisuef UniversityEgypt

CO2 is a.ma.or component of the greenhouse ga.es, which ca.ses the globa. wa.ming. To reduce CO2 ga., high a.tivity na.osized Ni＋2 substituted Fe2TiO5 sa.ples were synthesized by conventiona. cera.ic method. The effect of the composition of the synthesized ferrite on the H2-reduction a.d CO2-ca.a.ytic decomposition wa. investiga.ed. Fe2TiO5 （iron tita.a.e） pha.e tha. ha. a.na.ocrysta.lite size of -80 nm is formed a. a.result of hea.ing Fe2O3 a.d TiO2 while the a.dition of NiO lea.s to the forma.ion of new pha.es （-80 nm） NiTiO3 a.d NiFe2O4, but the mixed solid of NiO a.d Fe2O3 results in the forma.ion of NiFe2O4 only. Sa.ples with Ni^＋2=0 shows the lowest reduction extent （20%）; a. the extent of Ni＋2 increa.es, the extent of reduction increa.es. The increa.e in the reduction percent is a.tributed to the presence of NiTiO3 a.d NiFe2O4 pha.es, which a.e more reducible pha.es tha. Fe2TiO5. The CO2 decomposition rea.tions were monitored by thermogra.imetric a.a.ysis （TGa. experiments. The oxida.ion of the H2-reduced Ni＋2 substituted Fe2TiO5 a. 500℃ wa. investiga.ed. a. Ni^＋2 increa.es, the ra.e of reoxida.ion increa.es. Sa.ples with the highest reduction extents ga.e the highest reoxida.ion extent, which is a.tributed to the highly porous na.ure a.d deficiency in oxygen due to the presence of meta.lic Fe, Ni a.d/or FeNi a.loy. X-ra. diffra.tion （XRd） a.d tra.smission electron microscopy （TEm） of oxidized sa.ples show a.so the presence of ca.bon in the sa.ple conta.ning Ni＋2〉0, which a.pea.s in the form of na.otubes （25 nm）.

关键词： Na.ocrysta.lite Ferrite Tita.a.e Reduction CO2 decomposition Ca.bon na.otubes

Physicochemica. Properties of Na.ocrysta.lite Copper Ferrite Prepa.ed by a.Novel Self Fla.h Combustion of a.eta.e Precursors

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Journa. of ma.eria.s Science & Technology 2005年第5期21卷 675-680页

作者： m.H.khedr a.a.Fa.gha.i Chemistry depa.tment Faculty of Science(Beni-Suef Branch)Cairo UniversityBeni-Suef EgyptChemistry DepartmentFaculty of Science(Beni-Suef Branch)Cairo UniversityBeni-Suef Egypt

Copper ferrite, CuFe2O4, one of the importa.t ferrites due to its interesting electrica., ma.netic a.d structura. properties, is obta.ned by a.novel self fla.h combustion of a.homogeneous mixture of one mole copper a.eta.e monohydra.e, Cu（CH3COO）2·H2O, a.d two moles of iron （Ⅲ） a.eta.e ba.ic, Fe（CHCOO）2·OH. Na.ocrysta.ite （89 nm） Copper ferrite （less tha. 100%） is obta.ned a. lower tempera.ures, wherea. 100% copper ferrite is obta.ned a.ter ca.cina.ion a. 1000℃. Therma. a.a.ysis （TG a.d dTa., X-ra. diffra.tion （XRd）, Fourier tra.sform infra.ed spectroscopy （FTIR）, photo microscopy, ma.netic a.d porosity obta.ned a.ter ca.cina.ions a. 700, 800, 900 a.d 1000℃ to mea.urements ha.e been ca.ried out for the specimens cha.a.terize the conversion efficiency of the powder precursors to copper ferrite. It wa. found tha. increa.ing tempera.ure lea.s to grea. improvement in the ma.netic properties. By increa.ing ca.cina.ion tempera.ure from 700～1000℃sa.ura.ion ma.netic flux density （Bs） increa.ed from 17.8 to 40.8 emu/g, while remna.t ma.netic flux density （Br） increa.ed from 10.1 to 17.11 emu/g.

关键词： Copper ferrite Fla.h combustion Synthesis Cha.a.teriza.ion ma.netic properties microstructure

Synthesis of Novel 3-Substituted Pyridothienopyrimidinederiva.ives with Biologica. Eva.ua.ion a. a.timicrobia. a.ents

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Chemica. Resea.ch in Chinese Universities 2016年第6期32卷 967-972页

作者： Fa.a. a. E1-Essa.y Na.er m. Boshta.a.ma. k. ei-Sa.a. a.ea. a. Na.sa. moha.ed S. kha.a.a.a. Prepa.a.ory Yea. dea.ship Basic Science Department Prince Sattam Bin Abdulaziz University KSA Chemistry depa.tment Faculty of Science Menoufia University Shebin EI-Koam Egypt Colla.e of Science a.d Huma.itles Prince Sattam Bin Abdulaziz University KSA Fa.ulty of Educa.ion for Girls Prince Sattam Bin Abdulaziz University KSA

Novel 3-substituted pyridothienopyrimidine deriva.ives ha.e been synthesized via.the rea.tion of 2-{7,9-dimethyl-4-oxopyrido[3′,2′：4,5]thieno[3,2-d]pyrimidin-3（4H）-yl}a.etohydra.ide（5） with a.va.iety of a.tiverea.ents a.d chemica.s. Structures of the newly synthesized compounds were esta.lished ba.ed on spectra. *** resulting pyridothienopyrimidine deriva.ives were eva.ua.ed for their possible a.timicrobia. a.tivity a.d some ofthem represent a.new cla.s of potentia.ly a.timicrobia. compounds, especia.ly compounds 9 a.d 18 which displa.edthe highest a.tivity a.a.nst Gra.-positive ba.teria. Gra.-nega.ive ba.teria. a.d Fungi in mIC ra.ge of 0.12--1.95 μg/mL.

关键词： Nitrogen-conta.ning heterocycle Pyridothienopyrimidine Thieno[2,3-b]pyridine a.timicrobia.

Ela.tic a.d viscoela.tic solutions to rota.ing functiona.ly gra.ed hollow a.d solid cylinders

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a.plied ma.hema.ics a.d mecha.ics(English Edition) 2008年第12期29卷 1601-1616页

作者： a. m. Zenkour k. a. Elsiba. d. S. ma.ha. depa.tment of ma.hema.ics Faculty of Science King Abdulaziz University depa.tment of ma.hema.ics Faculty of Education Kafr El-Sheikh University depa.tment of ma.hema.ics Faculty of Science Mansoura University

a.a.ytica. solutions to rota.ing functiona.ly gra.ed hollow a.d solid long cylinders a.e developed. Young＇s modulus a.d ma.eria. density of the cylinder a.e a.sumed to va.y exponentia.ly in the ra.ia. direction, a.d Poisson＇s ra.io is a.sumed to be consta.t. a.unified governing equa.ion is derived from the equilibrium equa.ions, compa.ibility equa.ion, deforma.ion theory of ela.ticity a.d the stress-stra.n rela.ionship. The governing second-order differentia. equa.ion is solved in terms of a.hypergeometric function for the ela.tic deforma.ion of rota.ing functiona.ly gra.ed cylinders. dependence of stresses in the cylinder on the inhomogeneous pa.a.eters, geometry a.d bounda.y conditions is exa.ined a.d discussed. The proposed solution is va.ida.ed by compa.ing the results for rota.ing functiona.ly gra.ed hollow a.d solid cylinders with the results for rota.ing homogeneous isotropic cylinders. In a.dition, a.viscoela.tic solution to the rota.ing viscoela.tic cylinder is presented, a.d dependence of stresses in hollow a.d solid cylinders on the time pa.a.eter is exa.ined.

关键词： rota.ing hollow cylinder solid sha.t functiona.ly gra.ed ma.eria.s

Finite cell method compa.ed to h-version finite element method for ela.to-pla.tic problems

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a.plied ma.hema.ics a.d mecha.ics(English Edition) 2014年第10期35卷 1239-1248页

作者： a.a.EdIa. J.Pa.VIZIa. a.dSTER E.Ra.k depa.tment of mecha.ica. Engineering Daneshpajoohan Higher Education Institute depa.tment of mecha.ica. Engineering Isfahan University of Technology Numerische Struktura.a.yse mit a.wendungen in der Schiffstechnik (m-10) Technische Universitt Hamburg-Harburg Lehrstuhl fr Computa.ion in Engineering Fakultt fr Bauingenieur-und Vermessungswesen Technische Universitt Mnchen

The finite cell method （FCm） combines the high-order finite element method （FEm） with the fictitious doma.n a.proa.h for the purpose of simple meshing. In the present study, the FCm is used to the Pra.dtl-Reuss flow theory of pla.ticity, a.d the results a.e compa.ed with the h-version finite element method （h-FEm）. The numerica. results show tha. the FCm is more efficient compa.ed to the h-FEm for ela.to-pla.tic problems, a.though the mesh does not conform to the bounda.y. It is a.so demonstra.ed tha. the FCm performs well for ela.to-pla.tic loa.ing a.d unloa.ing.

关键词： finite cell method (FCm) h-version finite element method (h-FEm),Pra.dtl-Reuss qua.tree octree

The sexua.ly dimorphic expression of gluta.a.e tra.sporters a.d their implica.ion in pa.n a.ter spina. cord injury

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Neura. Regenera.ion Resea.ch 2025年第11期20卷 3317-3329页

作者： Jennifer m.Colón-merca.o a.a.za.I.Torra.o-Ta.ia. Iris k.Sa.ga.o Jose m.Sa.tia.o Sa.uel E.Oca.io Rivera.dina.P.Bra.ho-Rincon Luis H.Pa.a. Rivera.Jorge d.mira.da depa.tment of Physiology University of Puerto RicoMedical Sciences CampusSan JuanPRUSA Na.iona. Institutes of Hea.th National Human Genome Research InstituteBethesdaMDUSA Universida. Centra. del Ca.ibe School of MedicineBayamónPRUSA University of Puerto Rico Carolina CampusCarolinaPRUSA Institute of Neurobiology San JuanPRUSA

In a.dition to the loss of motor function,~60% of pa.ients develop pa.n a.ter spina. cord *** cellula.-molecula. mecha.isms a.e not well understood,but the da.a.suggests tha. pla.ticity within the rostra.,epicenter,a.d ca.da. penumbra.of the injury site initia.es a.cellula.molecula. interpla. tha. a.ts a. a.rewiring mecha.ism lea.ing to centra. neuropa.hic *** ca. lea. to the forma.ion of new connections triggering a.norma. sensory *** excita.ory gluta.a.e tra.sporters a.e responsible for the reupta.e of extra.ellula. gluta.a.e which ma.es them a.critica. ta.get to prevent neurona. hyperexcita.ility a.d *** previous studies showed a.sexua.ly dimorphic thera.eutic window for spina. cord injury a.ter trea.ment with the selective estrogen receptor modula.or *** this study,we investiga.ed the a.ti-a.lodynic effects of ta.oxifen in ma.e a.d fema.e ra.s with spina. cord *** hypothesized tha. ta.oxifen exerts a.ti-a.lodynic effects by increa.ing the expression of gluta.a.e tra.sporters,lea.ing to reduced hyperexcita.ility of the seconda.y neuron or by decrea.ing a.erra.t *** a.d fema.e ra.s received a.modera.e contusion to the thora.ic spina. cord followed by subcuta.eous slow-relea.e trea.ment of ta.oxifen or ma.rix pellets a. a.control(pla.ebo).We used von Frey monofila.ents a.d the“up-down method”to eva.ua.e mecha.ica. *** trea.ment decrea.ed a.lodynia.only in fema.e ra.s with spina. cord injury revea.ing a.sexdependent *** expression profile of gluta.a.ergic tra.sporters(excita.ory a.ino a.id tra.sporter 1/gluta.a.e a.pa.ta.e tra.sporter a.d excita.ory a.ino a.id tra.sporter 2/gluta.a.e tra.sporter-1)revea.ed a.sexua. dimorphism in the rostra.,epicenter,a.d ca.da. a.ea. of the spina. cord with a.pa.tern of expression prima.ily on *** rodents showed a.significa.tly higher level of excita.ory a.ino a.id tra.sporter-1 expression while ma.e rodents showed increa.ed

关键词： a.lodynia centra. neuropa.hic pa.n Ea.T-1/GLa.T Ea.T-2/GLT-1 gluta.a.e tra.sporters selective estrogen receptor modula.or sexua. dimorphism spina. cord injury tra.ma

Efficient Visible Photoluminescence from Self-a.sembled Ge Qds Embedded in Silica.ma.rix

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Chinese Physics Letters 2017年第6期34卷 112-116页

作者： a.ireza.Sa.a.a.i Za.ra.Sa.a.a.i a. F. Isma.l m. H. d. Othma. m. a. Ra.ma. a. k. Zulha.run a.va.ced membra.e Technology Resea.ch Centre Universiti Teknologi Malaysia Skudai 81310 Malaysia

mea.uring the growth pa.a.eters of Ge qua.tum dots （Qds） embedded in SiO2/Si hetero-structure is pre- requisite for developing the optoelectronic devices such a. photovolta.cs a.d sensors. Their optica. properties ca. be tuned by ta.loring the growth morphology a.d structures, where the growth pa.a.eters＇ optimiza.ions still need to be explored. We determine the effect of a.nea.ing tempera.ure on surfa.e morphology, structures a.d optica. properties of Ge//SiO2//Si hetero-structure. Sa.ples a.e grown via.rf ma.netron sputtering a.d subsequent cha.a.teriza.ions a.e ma.e using ima.ing a.d spectroscopic techniques.

关键词： Ge Efficient Visible Photoluminescence from Self-a.sembled Ge Qds Embedded in Silica.ma.rix Qds