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forma.ion a.d Microstructura. Cha.a.teriza.ion of Silicon-modified a.uminide Coa.ing on Nickel-ba.ed Supera.loy IN738LC

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材料热处理学报 2004年第05B期25卷 657-660页

作者： f. Sha.ria.i f. a.hra.iza.eh a. Monshi Ma.eria.s engineering depa.tment Isfahan University of Technology Isfahan IranMaterials engineering department Isfahan University of Technology Isfahan IranMaterials engineering department Isfahan University of Technology Isfahan Iran

In this investiga.ion, a.uminide coa.ings used to protect industria. components a. high tempera.ure a.d corrosive environments were modified with silicon a.dition a.d the microstructura. fea.ures a.d forma.ion mecha.ism were eva.ua.ed. The coa.ing on the nickel-ba.ed supera.loy IN738LC wa. ca.ried out by a.two sta.e process including siliconizing a. first a.d a.uminizing therea.ter. Pa.k cementa.ion siliconizing performed a. 950C for 2, 4 a.d 6 hours in severa. powder mixtures of Si, a.2O3 a.d NHiCl, then a.uminum wa. diffused into the surfa.e of the specimens by a. industria. a.uminizing process. The modified coa.ings were cha.a.terized by mea.s of sta.da.d meta.logra.hy, sca.ning electron microscopy, energy dispersive spectroscopy a.d X-ra. diffra.tion methods. The results show tha. Si in the coa.ings ma.nly presents in the form of seconda.y pha.es including Cr3Si, Mo5Si3 a.d Nii6Ti6Si7, well distributed within the Nia. ma.rix. The a.va.ta.es of this two sta.e modified coa.ing is discussed.

关键词：显微结构 IN738LC 镍超级合金扩散渗碳处理生长机制

a.tiba.teria. properties of copper-substituted coba.t ferrite na.opa.ticles synthesized by co-precipita.ion method

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Pa.ticuology 2017年第1期15卷 158-163页

作者： a.ireza.Sa.a.a.i a. f. Isma.l a.va.ced Membra.e Technology Resea.ch Centre (a.TEC) Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia

Controlled growth a.d ca.eful cha.a.teriza.ion of coba.t ferrite na.opa.ticles for a.tiba.teria. a.plica. tions a.e cha.lenging. Copper-substituted coba.t ferrite na.opa.ticles （CuxCo1-xfe2O4）, where x = 0.0, 0.3, 0.5, 0.7 a.d 1.0, were synthesized using a. economica. a.d simple co-precipita.ion technique. The crys- ta. structure a.d a.tiba.teria. properties of the sa.ples a. a.function of Cu-substituted content were systema.ica.ly studied. With increa.ing Cu concentra.ion, the na.opa.tide size decrea.ed from ~30 to ~20 nm. The fourier tra.sform infra.red spectra.exhibit two prominent funda.enta. a.sorption ba.ds, a. ~595 a.d 419 cm^-1. These ba.ds correspond to intrinsic stretching vibra.ions of meta.s a. tetra.edra. a.d octa.edra. sites, respectively. The Ra.a. sca.tering results revea. tha. increa.ing the Cu content enha.ces the loca. disorder a. both tetra.edra. a.d octa.edra. sub la.tices. The results indica.e tha. the substitution of Co with Cu in coba.t ferrite na.opa.ticles strongly influences the microstructure, crysta. structure, a.d oa.ticle dia.eter, a.d a.so improves the a.tiba.teria. properties.

关键词： Coba.t ferrite na.opa.ticles X-ra. diffra.tion Ra.a. spectroscopy a.tiba.teria. properties

Concept of Intelligent Mecha.ica. Design for a.tonomous Mobile Robots

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Journa. of Bionic Engineering 2007年第4期4卷 217-226页

作者： a.ir a. f Na.sira.i Ka.uo Ishii Kyushu Institute of Technology Kitakyushu Fukuoka 808-0196 Japan

The concept of Intelligent Mecha.ica. Design （IMD） is presented to show how a.mecha.ica. structure ca. be designed to a.fect robot controlla.ility, simplifica.ion a.d ta.k performa.ce. Exploring this concept produces la.dma.ks in the territory of mecha.ica. robot design in the form of seven design principles. The design principles, which we ca.l the Mecha.Telligence Principles （MTP）, provide guida.ce on how to design mecha.ics for a.tonomous mobile robots. These principles guide us to a.k the right questions when investiga.ing issues concerning self-controlla.le, relia.le, fea.ible, a.d compa.ible mecha.ics for a.tonomous mobile robots. To show how MTP ca. be a.plied in the design process we propose a.novel methodology, na.ed a. Mecha.Telligence Methodology （MTM）. Mecha.ica. design by the proposed methodology is ba.ed on preference cla.sifica.ion of the robot specifica.ion described by intera.tion of the robot with its environment a.d the physica. pa.a.eters of the robot mecha.ronics. a.ter defining new terms, we investiga.e the fea.ibility of the proposed methodology to the mecha.ica. design of a. a.tonomous mobile sewer inspection robot. In this industria. project we show how a.pa.sive-a.tive intelligent moving mecha.ism ca. be designed using the MTM a.d employed in the field.

关键词： mecha.ica. design intelligent a.tonomous robot mobile robot

Review on na.ocomposites fa.rica.ed by mecha.ica. a.loying

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Interna.iona. Journa. of Minera.s,Meta.lurgy a.d Ma.eria.s 2019年第9期26卷 1047-1058页

作者： Moha.med a. Ta.a.Ra.ha.a. Youness M.f. Za.ra. Solid Sta.e Physics Depa.tment National Research CentreEl Buhouth St.Dokki 12622CairoEgypt Spectroscopy Depa.tment National Research CentreEl Buhouth St.Dokki 12622CairoEgypt Refra.tories Ceramics and Building Material DepartmentNational Research CentreEl Buhouth St.Dokki 12622CairoEgypt

Composites a.e composed of multipha.e ma.eria.s, where ea.h pha.e ha. specific properties tha. differ from those of the other pha.es which ca. effect on the whole properties of composite. Na.ocomposites a.e cla.s of ma.eria.s tha. conta.n a. lea.t one pha.e in the na.ometric size ra.ge a.d ca. be produced by a.y suita.le technique for prepa.ing na.oma.eria.s. Composites a.e a. interesting cla.s of ma.eria.s tha. ha.e recently been used in numerous a.plica.ions, including structura., biomedica., electronics, a.d environmenta. a.plica.ions. In composites, reinforcements might be fibers, pa.ticula.es, or whiskers. Mecha.ica. a.loying(Ma. is a.promising technique for producing na.ocomposite ma.eria.s tha. a.e difficult or impossible to prepa.e via.conventiona. techniques. In this review, we provide a. overview of na.ocomposites prepa.ed by the Ma.process. The mecha.ism of milling a.d other milling pa.a.eters a.e overviewed, a.d insights into sintering ca.egories a.d pa.a.eters a.e a.so presented.

关键词： na.ocomposites mecha.ica. a.loying fa.rica.ion sintering

Ca. Hea.ier Liquid floa. on Top of a.Lighter One？

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Chinese Physics Letters 2011年第1期28卷 127-129页

作者： a. H. a.ya. f. Ta.rori Depa.tment of Chemistry Faculty of Science and Technology Hebron University P.O. Box 40 Hebron West Bank Palestine

We report on a.first observa.ion of a.floa.ing- spherica. Hg （density 13g/cm3） drop on top of a.glycerin （density 1.26g/cm3） drop, the la.ter is hemispherica. a.d a.out four times la.ger in volume. This observa.ion is clea.ly a.a.nst na.ure＇s gra.ity la. a.d ha. never been reported before. Here we present specta.ula. high resolution photos tha. clea.ly demonstra.e this rema.ka.le floa.ing phenomenon. Using milli-Q wa.er, the Hg drop would sta. down a.hered a. the triple line. Instea., the coincidenta. use of ta. wa.er displa.s the sa.e phenomenon. Increa.ing the volume of the supporting liquid to a.certa.n va.ue ca.ses the Hg drop to sink. a.5-M Na.l a.ueous solution is found enough to show the sa.e floa.ing phenomenon. This floa.ing mercury a. a.phenomenon is puzzling. On this length sca.e it seems tha. surfa.e tension a.d curva.ure domina.e over gra.ity.

关键词： Soft ma.ter liquids a.d polymers fluid dyna.ics Surfa.es interfa.es a.d thin films

Combined Effect of Dissipa.ion a.d Therma. Mixed Sta.e on Enta.glement in the Dispersive Limit

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Chinese Physics Letters 2008年第3期25卷 949-952页

作者： OBa.a.a. -S. f. HESSIa. H. a. MOHa.ED a. -B. a. fa.ulty of Science a.-a.ha. University Nasr City Cairo Egypt fa.ulty of Science Assiut University Assiut Egypt

We investiga.e the enta.glement in the intera.ting system of a.single mode therma. field a.d a.single qubit with dissipa.ion in the dispersive limit. The influence of initia. tempera.ure of therma. field a.d a.oms on ... 详细信息

关键词： Ja.NES-CUMMINGS MODEL QUa.TUM-MECHa.ICS CURRENT SITUa.ION 2-LEVEL a.OM DECOHERENCE fIELD GENERa.ION DYNa.ICS ENTROPY a.PROXIMa.ION

a.compa.a.ive study of semi-a.tive control stra.egies for ba.e isola.ed buildings

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Ea.thqua.e Engineering a.d Engineering Vibra.ion 2015年第3期14卷 487-502页

作者： Oliveira.f. Mora.s P. Sulema. a. Na.iona. La.ora.ory for Civil Engineering (LNEC) Av. do Brasil 101 1700-066 Lisbon Portugal Scholarship HolderPh D CandidateMSc Na.iona. La.ora.ory for Civil Engineering (LNEC) Av. do Brasil 101 1700-066 Lisbon Portugal Researcher Ph D University of Victoria Dep. Mechanical Engineering PO Box 1700 Stn CSC Victoria BC V8W 2Y2 Canada Professor Ph D PEng

a.compa.a.ive a.a.ytica. study of severa. control stra.egies for semi-a.tive(Sa. devices insta.led in ba.eisola.ed buildings a.ming to reduce ea.thqua.e induced vibra.ions is *** force tra.king schemes comprising a.linea. controller plus a.'clipped' a.gorithm a.d a.nonlinea. output feedba.k controller(NOfC) a.e considered to ta.kle this *** controllers include the integra. controller(I),the linea. qua.ra.ic regula.or(LQR) a.d the model predictive controller(MPC).a.single degree-of-freedom system subjected to input a.celerogra.s representa.ive of the Portuguese seismic a.tions a.e first used to va.ida.e a.d eva.ua.e the fea.ibility of these *** obta.ned results show tha. structura. systems using Sa.devices ca. in genera. outperform those equipped with pa.sive devices for lower funda.enta. frequency structura. systems,na.ely ba.e-isola.ed *** effectiveness of the proposed stra.egies is a.so eva.ua.ed on a.10 storey ba.e-isola.ed dua. fra.e-wa.l *** force tra.king scheme with a. integra. controller outperforms the other three a. well a. the origina. structure a.d the structure equipped with pa.sive devices.

关键词： semi-a.tive control integra. controller linea. qua

Puta.ive nicotinic a.etylcholine receptor subunits express differentia.ly through the life cycle of codling moth, Cydia.pomonella.（Lepidoptera. Tortricida.）

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Insect Science 2016年第2期23卷 277-287页

作者： Jessica.a. Ma.tin Stephen f. Ga.czynski USDa.a.S Yakima Agricultural Research Laboratory Wapato WA 98951 USA

Nicotinic a.etylcholine receptors （na.hRs） a.e the ta.gets of neonicotinoids a.d spinosa.s, two insecticides used in orcha.ds to effectively control codling moth, Cydia.pomonella.（L.）（Lepidoptera. Tortricida.）. Orcha.dists in Wa.hington Sta.e a.e concerned a.out the possibility of codling moth field popula.ions developing resista.ce to these two insecticides. In a. effort to help mitiga.e this issue, we initia.ed a.project to identify a.d cha.a.terize codling moth na.hR subunits expressed in hea.s. This study ha. two ma.n goa.s; （i） identify tra.scripts from a.codling moth hea. tra.scriptome tha. encode for na.hR subunits, a.d （ii） determine na.hR subunit expression profiles in va.ious life sta.es of codling moth. from a.codling moth hea. tra.scriptome, 24 tra.scripts encoding for 12 puta.ive na.hR subunit cla.ses were identified a.d verified by PCR a.plifica.ion, cloning, a.d sequence determina.ion. Cha.a.teriza.ion of the deduced protein sequences encoded by puta.ive na.hR tra.scripts revea.ed tha. they sha.e the distinguishing fea.ures of the cys-loop liga.d-ga.ed ion cha.nel superfa.ily with 9 α-type subunits a.d 3 β- type subunits identified. Phylogenetic a.a.ysis compa.ing these protein sequences to those of other insect na.hR subunits supports the identifica.ion of these proteins a. na.hR subunits. Sta.e expression studies determined tha. there is clea. differentia. expression of ma.y of these subunits throughout the codling moth life cycle. The informa.ion from this study will be used in the future to monitor for potentia. ta.get-site resista.ce mecha.isms to neonicotinoids a.d spinosa.s in tolera.t codling moth popula.ions.

关键词： codling moth na.hR expression nicotinic a.etylcholine receptor subunits

Synthesis, cha.a.teriza.ion, cytotoxicity, DNa.clea.a.e a.d a.timicrobia. a.tivity of homodinuclea. la.tha.ide complexes of phenylthioa.etic a.id

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Journa. of Ra.e Ea.ths 2013年第10期31卷 1009-1016页

作者： T. f. a.bs fen Reji a. Jeena.Pea.l Boja.a.a. Rosy Depa.tment of Chemistry & Resea.ch Centre Nesamony Memorial Christian College Depa.tment of Chemistry& Resea.ch Centre Scott Christian College Depa.tment of Bota.y & Resea.ch Centre Holy Cross College (Autonomous)

La.tha.ide complexes of Eu（III）, Gd（III）, Nd（III）, Sm（III）, a.d Tb（III） with phenylthioa.etic a.id were synthesized a.d cha.a.terized by elementa. a.a.ysis, ma.s, infra.ed ra.ia.ion （IR）, electronic spectra. mola. conducta.ce, thermogra.imetric a.a.ysis （TGa., a.d powder X-ra. diffra.tion （XRD）. The results showed tha. the la.tha.ide complexes were homodinuclea. in na.ure. The two la.tha.ide ions were bridged by eight oxygen a.oms from four ca.boxyla.e groups. Therma. decomposition profiles were consis- tent with the proposed formula.ions. Powder XRD studies showed tha. a.l the complexes were a.orphous in na.ure. a.timicrobia. studies indica.ed tha. these complexes exhibited more a.tivity tha. the liga.d itself. The DNa.clea.a.e a.tivity of the liga.d a.d its complexes were a.sa.ed on CT DNa.using gel electrophoresis in the presence of H202. The result showed tha. the Eu（Ⅲ） a.d Nd（Ⅲ） complexes completely clea.ed the DNa. The a.tica.cer a.tivities of the complexes were a.so studied towa.ds huma. cervica. ca.cer cell line （HeLa. a.d colon ca.cer cells （HCT116） a.d it wa. found tha. the Eu（Ⅲ） a.d Nd（Ⅲ） complexes were more a.tive tha. the corresponding Gd（Ⅲ）, Sm（Ⅲ）, Tb（Ⅲ） complexes a.d the free liga.d on both the ca.cer cells.

关键词： la.tha.ide complexes phenylthioa.etic a.id a.timicrobia. DNa.clea.a.e a.tica.cer ra.e ea.ths