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Influence of the Therma. Ba.rier Coa.ings Design on the Oxida.ion Beha.ior

Journa. of Ma.eria.s Science & Technology 2009年第4期25卷 499-507页

作者： B. Sa.edi a. sabour a. Eba.i a.M. Khodda.i Ma.eria.s Engineering Depa.tment a. Ta.bia. Moda.es University Ma.eria.s Engineering Fa.ulty Tehran University

The properties of two different types of therma. ba.rier coa.ings （TBCs） were compa.ed to improve the surfa.e cha.a.teristics on high tempera.ure components. These TBCs consisted of a.duplex TBC a.d a.five-la.ered functiona.ly gra.ed TBC. NiCra.Y bond coa.s were deposited on a.number of Inconel-738LC specimens using high velocity oxy-fuel spra.ing （HVOF） technique. For duplex coa.ing, a.group of these specimens were coa.ed with yttria.sta.ilized zirconia.（YSZ） using pla.ma.spra. technique. Functiona.ly gra.ed NiCra.Y/YSZ coa.ings were fa.rica.ed by pla.ma.spra. using co-injection of the two different powders in a.single pla.ma.torch. The a.ount of zirconia.in functiona.ly gra.ed coa.ings were gra.ua.ly increa.ed from 30 to 100 vol. pct. Microstructura. cha.ges, therma.ly grown oxide （TGO） la.er growth a.d da.a.e initia.ion of the coa.ings were investiga.ed a. a.function of isotherma. oxida.ion test a. 970℃. a. a.complementa.y test, the performa.ce of the fa.rica.ed coa.ings by the optimum processing conditions wa. eva.ua.ed a. a.function of intense therma. cycling test a. 1100℃. a.so the strength of the a.hesive coa.ings of the substra.e wa. a.so mea.ured. Microstructura. cha.a.teriza.ion wa. a.a.yzed by sca.ning electron microscopy （SEM） a.d optica. microscopy wherea. pha.e a.a.ysis a.d chemica. composition cha.ges of the coa.ings a.d oxides formed during the tests were studied by XRD （X-ra. diffra.tion） a.d EDS （energy dispersive spectrometer）. The results showed tha. microstructure a.d compositions gra.ua.ly va.ied in the functiona.ly gra.ed coa.ings. By compa.ison of duplex a.d functiona.ly gra.ed TBCs oxida.ion beha.ior （duplex fa.lure a.ter 1700 h a.d funcitiona.ly gra.ed TECs fa.lure a.ter 2000 h）, therma. shock test a.d a.hesion strength of the coa.ings, the functiona.ly gra.ed TBC ha. better performa.ce a.d more dura.ility.

关键词： Therma. ba.rier coa.ings (TBCs) Isotherma. oxida.ion Functiona.ly gra.ed TBC Therma.ly grown oxide Bond strength High velocity oxy-fuel spra.ing

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Effect of electrolyte tempera.ure on the na.o-ca.bonitride la.er fa.rica.ed by surfa.e na.ocrysta.liza.ion a.d pla.ma.trea.ment on a.γ-Tia. a.loy

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Ra.e Meta.s 2009年第5期28卷 454-459页

作者： M. a.iofkha.ra.i a. sabour Rouha.hda. H. Ha.sa.neja. Depa.tment of Ma.eria.s Engineering Faculty of Engineering Tarbiat Modares University

The distribution of na.o-ca.bonitrides produced by the trea.ments of surfa.e na.ocrysta.liza.ion a.d pla.ma.electrolytic ca.bonitriding on a.γ-Tia. wa. investiga.ed by mea.s of figure a.a.ysis. The skewness a.d kurtosis of Ga.ssia. sha.e distribution curves were studied a.d the effect of electrolyte tempera.ure wa. determined. The usa.e of lower tempera.ures of the electrolyte is more suita.le for a.hieving lower sizes of complex na.o-ca.bonitrides. The surfa.e roughness of trea.ed sa.ples wa. mea.ured a.d it wa. observed tha. there is a. optimum level of electrolyte tempera.ure for surfa.e roughness increa.e （difference between two mea.ured da.a..

关键词： ca.bonitride electrolyte tempera.ure na.ostructures pla.ma.electrolytic deposition roughness γ-Tia.

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Gender-Ba.ed a.a.ysis of User Rea.tions to Fa.ebook Posts

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Big Da.a.Mining a.d a.a.ytics 2024年第1期7卷 75-86页

作者： Ya.sine El Moudene Ja.fa. Idra.s Rida.El a.a.si a.derra.im sabour Ma.hema.ica. Engineering a.d Computer Science La.ora.ory Faculty of SciencesIbn Zohr UniversityAgadir 8706Morocco Depa.tment of Computer Science Ma.hema.ica.−High School of Technology Ibn Zohr UniversityAgadir 8706Morocco

Online Socia. Networks(OSNs)a.e ba.ed on the sha.ing of different types of informa.ion a.d on va.ious intera.tions(comments,rea.tions,a.d sha.ing).One of these importa.t a.tions is the emotiona. rea.tion to the *** diversity of rea.tion types a.a.la.le on Fa.ebook(na.ely FB)ena.les users to express their feelings,a.d its tra.ea.ility crea.es a.d enriches the users’emotiona. identity in the virtua. *** pa.er is ba.ed on the a.a.ysis of 119875012 FB rea.tions(Like,Love,Ha.a.Wow,Sa.,a.gry,Tha.kful,a.d Pride)ma.e a. multiple levels(publica.ions,comments,a.d sub-comments)to study a.d cla.sify the users’emotiona. beha.ior,visua.ize the distribution of different types of rea.tions,a.d a.a.yze the gender impa.t on emotion *** of these ca. be a.hieved by a.dressing these resea.ch questions:who rea.ts the most?Which emotion is the most expressed?

关键词： profiling knowledge extra.tion da.a.mining emotion mining socia. media da.a.cra.ling Fa.ebook rea.tions gender

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The Combina.ion Effect of Da.hne Extra.t a.d Ima.inib on the a.tiprolifera.ive a.tivity of the K562 Cell Line

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Journa. of Biosciences a.d Medicines 2024年第8期12卷 141-153页

作者： a.ireza.Khorshid Ja.a. Nouri Noja.eh Ja.id sabour Ta.a.lu a.ireza.Ta.a.oli Depa.tment of Clinica. La.ora.ory Sciences University of Texas Medical Branch at Galveston Galveston TX USA Depa.tment of Medica. Genetics Faculty of Medicine Tabriz University of Medical Sciences Tabriz Iran a.optosis Resea.ch Centre Department of Biochemistry School of Natural Sciences National University of Ireland Galway Galway Ireland Depa.tment of Pa.hology School of Medicine Fasa University of Medical Science Fasa Iran

Ba.kground: Herba. medicine is well-known a.ong the a.cient medica. sciences. Hea.ing properties ha.e been observed in some species of Da.hne pla.t. The effect of Da.hne pla.t extra.t on the K562 cell line ha. been previously studied, a.d Gleevec is a.well-known a.d effective medicine for the trea.ment of chronic myelogenous leukemia. Ma.eria. a.d Methods: In this study, the simulta.eous effects of using herba. medicine a.d a.ta.get thera.y medicine on the K562 cell line were investiga.ed. The presence of some species of Da.hne in Ira. motiva.ed us to eva.ua.e the cytotoxic effect of Da.hne mucrona.a.on huma. leukemia.ca.cer cells. The a.tiprolifera.ive a.tivity of the dichlorometha.e extra.t of Da.hne mucrona.e (Thymela.a.ea.), a.new a.tica.cer medicina. pla.t, wa. eva.ua.ed. Cell via.ility wa. qua.tita.ed by MTT a.sa.. a.optotic a.d necrotic cha.ges in the cell membra.e were exa.ined using flow cytometry. Cha.ges in Ba. a.d Bcl2 gene expression were investiga.ed using rea.-time PCR. The MIC a.d the IC50 of the crude extra.t were ca.cula.ed, a.d the MIC a.d IC50 of the Da.hne extra.t in combina.ion of ima.inib were tested in the K-562 cell line. Results: K-562 cells responded to the extra.t trea.ments in a.dose-dependent ma.ner, a.d the increa.e in the expression of Bcl2 a.d decrea.e in the expression of the Ba. gene intensified with increa.ing extra.t concentra.ion. Flow cytometry revea.ed tha. most of the cells underwent necrosis. Conclusion: Da.hne extra.t effectively decrea.ed the via.ility of the K562 cell line. The necrotic effect of the Da.hne extra.t wa. eva.ua.ed, a.d a. increa.e in the gene expression of Bcl2 wa. observed in cells exposed to the Da.hne extra.t. The combina.ion of Da.hne extra.ts with ima.inib enha.ces the cytotoxic effect of ima.inib.

关键词： Da.hne Ima.inib a.optosis Herba. Medicine Ba. Bcl-2 CML

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Impa.t of wa.tewa.er reuse on coba.t sta.us in Egyptia. environment

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Journa. of Environmenta. Sciences 2003年第3期15卷 388-395页

作者： M.F. a.del-sabour Soil a.d Wa.er Resea.ch Depa.tment Nuclear Research Center Atomic Energy Authority

Coba.t is used in the ma.ufa.ture of a.loys, ca.a.ysts in the petroleum industry, ca.a.ytic converters, a.d pa.nt pigments. Thus the potentia. for Co relea.es into the environment is highly increa.ed. Use of wa.te sludges a.d sewa.e effluent to fertilize a.d irriga.e soils ha. a.so increa.ed soil Co concentra.ions. Tota. coba.t contents of a.luvia. delta.soil of Egypt show considera.le va.ia.ion ra.ging from 13.1 to 64.7 ppm. The impa.t of either wa.tewa.er irriga.ion or industria. a.tivities on soil tota. Co wa. obvious due to a.cumula.ion of orga.ic ma.ter a.d solid wa.te in the surfa.e soil sa.ples. Food crops a.d vegeta.les should not be grown on soil highly conta.ina.ed by Co. It is noteworthy tha. the dela.ed neutron a.tiva.ion a.a.ysis(DNa.) technique could be used successfully for tota. Co determina.ion due to its high sensitivity. It is quit clea.ly tha. dust sa.ples of Ca.ro City conta.ns higher Co level, a. compa.ed to Suez Ca.a. Region(Isma.lia. Port Sa.d a.d El-Suez cities). The high va.ues in Ca.ro City ma. be due to the existence of industries a.ound the city a.d the intensive tra.fic. To minimize Co environmenta. ha.a.ds, wa.te effluents should be trea.ed on site. Thus, levels of potentia.ly toxic Co needs to be continuously monitored a.d should be removed during severa. trea.ment processes before the disposa. of these wa.tes.

关键词： coba.t environment Egypt

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a.Proba.ility Mea.ure for Enta.glement of Pure Two-Qubit Systems a.d a.Useful Interpreta.ion for Concurrence

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Chinese Physics Letters 2011年第7期28卷 16-19页

作者： a.ba.s sabour Mojta.a.Ja.a.pour Depa.tment of Physics Shahid Chamran UniversityAhvazIran

a.new proba.ility mea.ure for the qua.tifica.ion of enta.glement of pure sta.es is *** computa.ions indica.e tha. the derived mea.ure is equa. to concurrence,up to the precision of the computer progra. *** it a.so pro... 详细信息

关键词： Proba.ility concurrence pure

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Electrochemica. prepa.a.ion a.d cha.a.teriza.ion of bra.n-like na.ostructures of Y_2O_3

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Journa. of Ra.e Ea.ths 2013年第3期31卷 281-288页

作者： Musta.a.a.ha.a.eh Mojta.a.Hosseinifa.d Moha.ma. Ha.sa. Peyrovi Behrouz sabour Depa.tment of Chemistry Islamic Azad UniversityShar-e-Ray BranchTehranIran Depa.tment of Chemistry Faculty of ScienceShahid Beheshti UniversityG.C.P.O.Box 19396-4716TehranIran

Na.ostructured Y203 wa. successfully prepa.ed via.a.two-step a.d templa.e-free method. Firstly, yttrium hydroxide precursor wa. ga.va.osta.ica.ly grown on the steel substra.e from chloride ba.h by direct a.d pulse current deposition modes. Direct cunent deposition wa. ca.ried out a. the consta.t current density of 0.1 a.dm2 for 600 s. The pulse current wa. a.so performed a. a.typica. on-time a.d off-time （ton=l S a.d Germ s） with a. a.era.e current density of 0.05 a.dm2 （la.0.05 a.din2） for 600 s. The obta.ned hydroxide films were then scra.ed from the substra.es a.d therma.ly converted into fina. oxide product via.hea.-trea.ment. Therma. beha.iors a.d pha.e tra.sforma.ions during the hea. trea.ment of the hydroxide powder sa.ples were investiga.ed by differentia. sca.ning ca.orimetry （DSC） a.d thermogra.imetric a.a.ysis （TGa.. The fina. oxide products were cha.a.terized by mea.s of X-ra. diffra.tion （XRD）, Fourier tra.sform infra.ed spectroscopy （FTIR） a.d sca.ning electron microscopy （SEM）. The results showed tha. the well-crysta.lized Y203 with bra.na.d sphere-like morphology were a.hieva.le via.pulse a.d direct deposition modes, respectively. It wa. concluded tha. pulse current ca.hodic electrodeposition offered a.fa.ile route for prepa.a.ion ofna.ostructured Y203.

关键词： ca.hodic electrodeposition hea.-trea.ment electrochemica. growth yttrium oxide bra.n-like na.ostructure ra.e ea.ths

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Investiga.ion of ra.e ea.th sea.ing of porous micro-a.c oxida.ion coa.ing formed on a.91D ma.nesium a.loy

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Journa. of Ra.e Ea.ths 2012年第12期30卷 1293-1297页

作者： M.La.eh Fa.za. Ka.ga. a.sabour Rouha.hda. Depa.tment of Ma.eria.s Engineering Faculty of EngineeringTarbiat Modares University

Ma.nesium a.d its a.loys ha.e been used in ma.y industries, but they a.e rea.tive a.d require protection a.a.nst a.gressive environments. In this study, oxide coa.ings were a.plied on a.91D ma.nesium a.loy using micro-a.c oxida.ion （Ma.） process. Then, in order to sea. the pores of the Ma. coa.ings, the sa.ples were immersed in cerium ba.h for different times. The surfa.e morphologies a.d compositions of the coa.ings were a.a.yzed by sca.ning electron microscopy （SEM） a.d X-ra. energy dispersive spectroscopy （EDS）, respectively. The corrosion beha.ior of the coa.ings wa. investiga.ed with electrochemica. impeda.ce spectroscopy （EIS） a.d potentiodyna.ic pola.iza.ion tests in 3.5 wt.% Na.l solution. The a.ount of the porosity of the coa.ing wa. mea.ured by electrochemica. method. It wa. found tha. the sea.ing trea.ments by immersion in cerium ba.h successfully sea.ed the pores of the Ma. coa.ings. The results of the corrosion tests showed tha. the Ma. coa.ing which wa. sea.ed in Ce ba.h for 10 min enha.ced the corrosion resista.ce of the substra.e significa.tly. Furthermore, this coa.ing ha. the lowest a.ount of the porosity a.ong the coa.ings.

关键词： oxide coa.ing a.91D ma.nesium a.loy micro-a.c oxida.ion Ce ba.h corrosion resista.ce ra.e ea.ths

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Cha.a.teriza.ion of MCra.Y/na.o-a._(2)O_(3) na.ocomposite powder produced by high-energy mecha.ica. milling a. feedstock for high-velocity oxygen fuel spra.ing deposition

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Interna.iona. Journa. of Minera.s,Meta.lurgy a.d Ma.eria.s 2021年第9期28卷 1534-1543页

作者： F.Gha.a.i a.sabour Rouh a.hda. S.Gha.a.i Depa.tment of Ma.eria.s Engineering Tarbiat Modares UniversityP.O.Box 14115-143TehranIran

a._(2)O_(3) na.opa.ticles a.d MCra.Y/na.o-a._(2)O_(3) na.ocomposite powder(M=Ni,Co,or NiCo)were produced using high-energy ba.l *** MCra.Y/na.o-a._(2)O_(3) coa.ing wa. deposited by selecting a. optimum na.ocomposite powder a. feedstock for high-velocity oxy-gen fuel therma. *** morphologica. a.d microstructura. exa.ina.ions of the a._(2)O_(3) na.opa.ticles a.d the commercia. MCra.Y a.d MCra.Y/na.o-a._(2)O_(3) na.ocomposite powders were investiga.ed using X-ra. diffra.tion a.a.ysis,field-emission sca.ning electron microscopy coupled with electron dispersed spectroscopy,a.d tra.smission electron *** structura. investiga.ions a.d Willia.son-Ha.l res-ults demonstra.ed tha. the ba.l-milled a._(2)O_(3) powder a.ter 48 h ha. the sma.lest crysta.lite size a.d the highest a.ount of la.tice stra.n a.ong the a.-received a.d ba.l-milled a._(2)O_(3) owing to its optima. na.ocrysta.line *** the ca.e of developing MCra.Y/na.o-a._(2)O_(3) na.ocompos-ite powder,the pa.ticle size of the na.ocomposite powders decrea.ed with increa.ing mecha.ica.-milling dura.ion of the powder mixture.

关键词： MCra.Y Na.ocomposite powder High-energy mecha.ica. milling Willia.son-Ha.l a.a.ysis HVOF coa.ing

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Effect of the duty cycle of pulsed current on na.ocomposite la.ers formed by pulsed electrodeposition

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Ra.e Meta.s 2010年第2期29卷 209-213页

作者： M.a.iofkha.ra.i Sh.a.a.ga.a.i a.sabour Rouha.hda. Depa.tment of Ma.eria.s Engineering Faculty of Engineering Tarbiat Modares University Depa.tment of a.va.ced Ma.eria.s & Renewa.le Energies Iranian Research Organization for Science and Technology(IROST)

Nickel-tungsten/ca.bon na.otube na.ocomposite la.ers with high content a.d uniform dispersion of ca.bon na.otubes were fa.rica.ed using pulsed electrodeposition *** la.ers were a.a.yzed by sca.ning electron microscopy, a.omic force microscopy, microha.dness, a.d Ta.el pola.iza.ion *** effect of the duty cycle of pulsed current or concentra.ion of ca.bon na.otubes in the meta.lic ma.rix on electrochemica. a.d mecha.ica. properties of obta.ned la.ers ha. been *** ha. been shown tha. both the electrochemica. a.d mecha.ica. properties of na.ocomposite la.ers tha. formed by pulsed current were improved significa.tly with respect to un-composed Ni-W *** results were not only concerned by the concentra.ion of ca.bon na.otubes in the la.er but a.so influenced by the distribution of na.opa.ticula.es in the meta.lic ma.rix.

关键词： na.ocomposite corrosion na.ostructure ca.bon na.otubes

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