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Open Journa. of Inorga.ic Chemistry 2016年第1期6卷 66-75页

作者： Moha.ed a. El-Sa.ed hoda a. elwakeil a.med H. a.del Sa.a. Hemma. a. Elba.a.y Chemistry Depa.tment Faculty of Science Alexandria University Alexandria Egypt Chemistry Depa.tment Faculty of Science University of Jeddah Jeddah Saudi Arabia Chemistry Depa.tment Faculty of Science University of Tabuk Tabuk Saudi Arabia

In this work, novel oxida.ive coupling complexes, [(Pip)4nCu4X4(CO3)2] (n = 1 or 2, X = Cl or Br, Pip = piperidine), a.e synthesized from the rea.tion of well cha.a.terized Lewis ba.e [(Pip)4nCu4X4O2] with ca.bon dioxide a. a.Lewis a.id in CH2Cl2. 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. CH2Cl2or phNO2. Cryoscopic mea.urements support tetra.uclea. structure for a.l of them. Electronic spectra.in the nea. infra.ed with high molecula. a.sorptivity ma. be expla.ned for tetra.uclea. cuba. structure to fulfil 3 ha.o-liga.ds for ea.h copper centre in [(Pip)4nCu4X4(CO3)2]. The EPR spectra.for [(Pip)4nCu4X4(CO3)2] complexes a.e a.ia. type of spectra.(dx2-y2 G.S) suggesting elonga.ed tetra.ona. distortion for a.l of them. Cyclic volta.mogra.s for [(Pip)4nCu4X4(CO3)2] a.e irreversible in cha.a.ter. These tetra.uclea. ca.bona.o complexes show ca.a.ytica. a.tivity. They initia.e the oxida.ion of 2,6-dimethylphenol (DMP) to 3,3’,5,5’-tetra.ethyl-4,4’-diphenoquinone (DPQ).

关键词： Complexes Tetra.uclea. Cuba. Ca.bona.o Bridge Copper

Kinetics of Oxida.ion of 2,6-Dimethylphenol (DMP) Using Novel μ-Ca.bona.o [(Pip)_4nCu₄X₄(CO₃)₂] Complexes

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Open Journa. of Inorga.ic Chemistry 2016年第3期6卷 183-194页

This pa.er reports the kinetics of the oxida.ion of 2,6-dimethylphenol (DMP) to get 3,3’,5,5’-tetra. methyl-4,4’-diphenoquinone (DPQ) using novel oxida.ive coupling complexes [(Pip)4nCu4X4-(CO3)2] (n = 1 or 2, X = Cl or Br, Pip = piperidine). The new prepa.ed tetra.uclea. complexes were cha.a.terized using cryoscopic mea.urements, electronic spectra. FTIR, EPR a.d cyclic volta.metry techniques. These complexes a.e ca.a.ytica.ly a.tive. The proposed mecha.ism of the ca.a.ytic oxida.ive coupling ca. be illustra.ed a. a.pre-equilibrium, K, between the ca.a.yst a.d DMP to form a.complex intermedia.e which is converted to a.tiva.ed complex through the ra.e determining step, k2, to form the fina. product. The inverse of the observed ra.e consta.ts kobsd versus 1/[DMP]2 gives a.stra.ght line with intercept. From the slope a.d the intercept, both K a.d k2 a.e obta.ned. a. different tempera.ures, thermodyna.ic a.d kinetic pa.a.eters a.e eva.ua.ed. It is worth to mention tha., the dependence of kobsd on [DMP]2 indica.es tha. the coordina.ion number for every copper center in both n = 1 or 2 in [(Pip)4nCu4X4(CO3)2] is equa. to six. Therefore, ca.bona.o bridging centers in n = 1 a.ts a. a.tridenta.e liga.d, while for n = 2 a.ts a. a.bidenta.e liga.d.

关键词： Ca.a.ysts Kinetics Thermodyna.ic Copper Complexes

a.a.tive Interva. Type-2 Fuzzy Controller for Va.ia.le-speed Wind Turbine

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Journa. of Modern Power Systems a.d Clea. Energy 2022年第2期10卷 524-530页

作者： Da.ya. Busta. hoda Moodi Qucha. University of Technology QuchanIran

In this pa.er,a. a.a.tive interva. type-2 fuzzy controller is proposed for va.ia.le-speed a.d va.ia.le-pitch wind *** of a.tra.tive fea.ures of the well-known wind turbine ba.eline controller,the proposed controller a.ts a. a. a.gmented controller a.d works in pa.a.lel to the ba.eline *** typica. va.ia.le-speed wind turbines ha.e different controllers for different opera.ion regions,for ea.h opera.ion region,a.dedica.ed interva. tvpe-2 fuzzy controller is *** of the uncerta.nty in wind speed mea.urement,modern control techniques try to estima.e this ***,in contra.t to these modern control techniques,the proposed controller is independent of the wind speed ***,there is a.better sa.ing in cost a.d computa.iona. *** eva.ua.e the effectiveness of the proposed controller,simula.ions a.e conducted with wind profiles which spa. a.l opera.ion *** show tha.,compa.ed with the ba.eline controller,the proposed controller enha.ces power genera.ions a.d reduces mecha.ica. loa.s concurrently.

关键词： Interva. type-2 fuzzy control ba.eline controller wind speed mea.urement wind turbine

Projectile a.gula.-differentia. cross sections for single electron tra.sfer in fa.t He^+-He collisions

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Chinese Physics B 2015年第3期24卷 127-135页

作者： Ebra.im Gha.ba.i-a.ivi hoda Gha.a.inia Depa.tment of Physics a.d Isfa.a. Qua.tum Optics Group (IQOG) Faculty of ScienceUniversity of Isfahan

The four-body Coulomb–Born distorted wa.e a.proxima.ion is a.plied to investiga.e the integra. a. well a. projectile a.gula.-differentia. cross sections for single-electron ca.ture in the collision of energetic singly positive cha.ged helium ions with helium a.oms in their ground sta.es. The forma.ism sa.isfies the correct bounda.y conditions. The influence of the dyna.ic electron correla.ions on the cross sections is studied by considering the inter electronic intera.tions in the complete perturba.ion potentia.s in post form. a.so, the sensitivity of the cross sections to the sta.ic electronic correla.ions is studied by using the single-zeta.a.d the highly correla.ed Byron–Joa.ha.n wa.e functions to describe the initia. bound sta.e of the a.tive electrons. The obta.ned results for the energy ra.ge of 40–5000 ke V/a.u a.e reported a.d compa.ed with other three- a.d four-body theoretica. da.a.a.d a.a.la.le experimenta. mea.urements. The compa.ison lea.s us to discuss the va.idity of the a.plied a.proa.h a.d survey the intera.tion effects on the cross sections by recognizing the electron–electron intera.tion. Pa.ticula.ly, for differentia. cross sections, the compa.ison of the present four-body method with the experiment shows tha. the a.reement is not a. good a. tha. for its three-body version.

关键词： Coulomb–Born distorted-wa.e a.proxima.ion four-body a.proxima.ion Coulomb bounda.y conditions differentia. a.d tota. cross secti

Influence of electron correla.ions on double-ca.ture process in proton helium collisions

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Chinese Physics B 2015年第7期24卷 219-225页

作者： hoda Gha.a.inia.Ebra.im Gha.ba.i-a.ivi Depa.tment of Physics Faculty of SciencesUniversity of Isfahan

The first-order correct-bounda.y Coulomb–Born distorted-wa.e a.proxima.ion is used to study the double-electron ca.ture by protons from the ground-sta.e helium a.oms a. intermedia.e a.d high impa.t energies. The differentia. double ca.ture cross sections a.e obta.ned a. a.function of the projectile sca.tering a.gle a.d the tota. cross sections a. a.function of the impa.t energy. In the considered ra.ge of impa.t energy, our ca.cula.ion shows tha. a.though the results a.e not so sensitive to the sta.ic inter-electronic correla.ions in the initia. cha.nel, the strong fina.-sta.e correla.ions ha.e a.la.ge effect on the ma.nitudes of the double ca.ture cross sections. The ca.cula.ed differentia. a.d integra. cross sections a.e compa.ed with their a.a.la.le experimenta. va.ues. The compa.ison shows a.good a.reement between the present ca.cula.ions a.d the mea.urements. The compa.ison of the integra. cross sections shows tha. the present a.proa.h is compa.ible with other theories.

关键词： Coulomb–Born a.proxima.ion double-electron ca.ture Coulomb bounda.y conditions differen-tia. a.d tota. cross sections

Demonstra.ion of the Symmetry Properties of Gra.ita.iona. Metric Fields

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Chinese Physics Letters 2002年第4期19卷 470-473页

作者：邵亮 H.hoda 等 Gra.ua.eSchoolofSciencea.dEngineering IbarakiUniversityMito310-8512Japan Depa.tmentofMa.hema.ica.Sciences IbarakiUniversityMito310-8512Japan

We ca.cula.e some Wilson loop functiona.s in a.sta.ic sphere-symmetrica. dia.ona. metric field a.d a.gra.ita.iona. metric field esta.lished by a.cosmic string. Using the direction cha.ge of vector when it is pa.a.lel ... 详细信息

关键词： Metric Symmetry Cloning Vectors Metronida.ole Fields Cosmic strings FUNCTIONa.S

Study on the Numerica. Model of Tra.sonic Wind Tunnel Test Section

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Journa. of Therma. Science 2021年第1期30卷 231-241页

作者： LOUDa.Petr PŘÍhoda Ja.omír Institute of Thermomecha.ics of the Czech a.a.emy of Sciences Prague 818200Czech Republic Fa.ulty of Mecha.ica. Engineering Czech Technical UniversityPrague 212135Czech Republic

The a.thors consider numerica. simula.ions of tra.sonic flows through va.ious turbine ca.ca.es in a.confined cha.nel which a.proxima.es bounda.ies of rea. wind *** bounda.ies of the wind tunnel a.e impermea.le or there ca. be permea.le ta.lboa.ds to diminish shock wa.e *** ma.hema.ica. model is ba.ed on Fa.re-a.era.ed Na.ier-Stokes equa.ions closed by a.turbulence model a.d model of tra.sition to *** ma.hema.ica. model is solved by a. implicit finite volume method with multi-block *** types of turbine bla.e ca.ca.es with subsonic or supersonic inlet a.e *** results a.e compa.ed with optica. mea.urements a.d simula.ions of periodic *** va.idity of experimenta. reference flow pa.a.eters in rela.ion to computed flow pa.terns is discussed.

关键词： perfora.ed wa.l model tra.sonic wind tunnel turbine bla.e ca.ca.e

Effect of na.otechnology on hea.y meta. remova. from a.ueous solution

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Journa. of Centra. South University 2016年第10期23卷 2526-2535页

作者： hoda Ka.rizi a.i Ba.ka. Ma.umeh Fa.a.a.i a.ricultura. Fa.ulty Razi University a.ricultura. Fa.ulty Gonbad Kavous University

The effect of na.otechnology on ca.mium a.d zinc remova. from a.ueous solution wa. investiga.ed. In order to cha.a.terize micro a.d na.o phra.mites a.stra.is a.sorbent, we a.a.yzed the da.a.via.FTIR, SEM, PSa. a.d EDX. The effect of va.ious pa.a.eters such a. p H, conta.t time, a.ount of a.sorbent a.d initia. concentra.ion, wa. investiga.ed. The optimum p H for the remova. of ca.mium for micro a.d na.o phra.mites a.stra.is a.sorbent wa. 7, a.d for the remova. of zinc by the micro a.sorbent wa. 7 a.d by na.o a.sorbent wa. 6. The equilibrium time of zinc wa. 90 min a.d for the a.sorption of ca.mium by micro a.d na.o a.sorbent were 90 a.d 30 min, respectively. The optimum dose of micro a.sorbent for the remova. of ca.mium wa. 0.7 g, a.d the other dose for the remova. of zinc a.d ca.mium wa. 0.5 g. The eva.ua.ion of a.sorbent's distribution coefficient showed tha. the highest ra.es of distribution coefficient with initia. concentra.ion of 5, 10, 30, a.d 50 mg/L were 394.83, 587.62, 759.39 a.d 1101.52 L/kg, respectively, which were observed in na.o a.sorbent. Desorption experiments for the na.o a.sorbent in three cycles were done. a.ong kinetics models, our experimenta. da.a.were more consistent with Hoo kinetic model a.d for isotherm models, Freundlich isotherm wa. more consistent. The results show tha. na.otechnology could increa.e the performa.ce of a.sorbents a.d enha.ce the efficiency of the a.sorption of ca.mium a.d zinc ions.

关键词： ca.mium isotherm model kinetic a.sorption zinc na.otechnology

Synthesizing a.d cha.a.terizing the ma.netic EDTa.chitosa./CeZnO na.ocomposite for simulta.eous trea.ing of chromium a.d phenol in a. a.ueous solution

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Chinese Journa. of Chemica. Engineering 2023年第6期58卷 76-88页

作者： Ma.oumeh Sheikh Hosseini Lori Moha.ma. Delna.a. hoda Khoshva.ht Fa.ulty of Engineering Civil Engineering DepartmentKharazmi UniversityTehran 15719-14911Iran

a.new ma.netic na.ocomposite chitosa./EDTa.CeZnO(MEC-CeZnO)is synthesized a. a. efficient a.d eco-friendly bio-compound for the remova. of chromium Cr(VI)meta. ions a.d phenol orga.ic ma.ters from a.ueous *** a.e cha.a.terized using field emission sca.ning electron microscope,energy dispersive X-ra. spectroscopy,tra.smission electron microscope,X-ra. diffra.tion,X-ra. photoelectron spectroscopy,Fourier tra.sform infra.ed spectroscopy,diffuse reflection spectroscopy,a.d PL *** reduction ra.e of Cr(VI)ions a.d phenol degra.a.ion is eva.ua.ed under va.ious experimenta. conditions,sepa.a.ely a.d *** a.era.e pore dia.eter a.d specific surfa.e of MEC-CeZnO na.ocomposite a.e obta.ned 50 nm a.d 210 m^(2)·g^(-1)respectively,which suggest the successful synthesis of the na.ocomposite beca.se of the increa.ed surfa.e a.ea.a.d reduced pores in compa.ison to previous ***,the best Cr(VI)a.d phenol reduction efficiencies a.e 98%a.d 92%a. 180 min of retention time,both following the La.gmuir-Hinshelwood first-order *** mecha.isms of Cr(VI)a.d phenol remova. from a.ueous solutions involved Cr(VI)reduction,phenol oxida.ion,a.d *** the reusa.ility of MEC-CeZnO showed tha. both degra.a.ion a.d recovery ca.a.ity is sta.le in 5 cycles.

关键词： Ma.netic chitosa. Chromium Phenol Photochemistry Na.opa.ticles Experimenta. va.ida.ion

Eva.ua.ions of Chris-Jerry Da.a.Using Genera.ized Progressive Hybrid Stra.egy a.d Its Engineering a.plica.ions

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Computer Modeling in Engineering & Sciences 2024年第9期140卷 3073-3103页

作者： Refa. a.ota.bi hoda Rezk a.med Elsha.ha. Depa.tment of Ma.hema.ica. Sciences College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Depa.tment of Sta.istics Al-Azhar UniversityCairo11884Egypt Fa.ulty of Technology a.d Development Zagazig UniversityZagazig44519Egypt

a.new one-pa.a.eter Chris-Jerry distribution,crea.ed by mixing exponentia. a.d ga.ma.distributions,is discussed in this a.ticle in the presence of incomplete lifetime *** exa.ine a.novel genera.ized progressively hybrid censoring technique tha. ensures the experiment ends a. a.predefined period when the model of the test pa.ticipa.ts ha. a.Chris-Jerry(CJ)*** the indica.ed censored da.a.is present,Ba.es a.d likelihood estima.ions a.e used to explore the CJ pa.a.eter a.d relia.ility indices,including the ha.a.d ra.e a.d relia.ility *** a.quire the estima.ed a.ymptotic a.d credible confidence interva.s of ea.h unknown ***,via.the squa.ed-error loss,the Ba.es’estima.ors a.e obta.ned using ga.ma.*** Ba.es estima.ors ca.not be expressed theoretica.ly since the likelihood density is crea.ed in a.complex ma.ner;nonetheless,Ma.kov-cha.n Monte Ca.lo techniques ca. be used to eva.ua.e *** effectiveness of the investiga.ed estima.ions is a.sessed,a.d some recommenda.ions a.e given using Monte Ca.lo ***,a. a.a.ysis of two engineering a.plica.ions,such a. mecha.ica. equipment a.d ba.l bea.ing da.a.sets,shows the a.plica.ility of the proposed a.proa.hes tha. ma. be used in rea.-world settings.

关键词： Chris-Jerry model genera.ized censoring likelihood a.d Ba.es estima.ions MCMC a.gorithms engineering a.plica.ions