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Effects of irregula.ity a.d initia. stresses on the dyna.ic response of viscoela.tic ha.f-spa.e due to a.moving loa.

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a.ta.Mecha.ica.Solida.Sinica 2017年第3期30卷 306-317页

作者： a.K. Singh a. Da. a. La.shma. a. Negi a. Cha.topa.hya. Depa.tment of a.plied Ma.hema.ics Indian Institute of Technology (Indian School of Mines) Dhanbad 826004 Jharkhand India

The present a.ticle dea.s with the stresses developed in a. initia.ly stressed irregula. viscoela.tic ha.f-spa.e clue to a.loa. moving with a.consta.t velocity a. a.rough free surfa.e. Expressions for norma. a.d shea. stresses a.e obta.ned in closed form. The substa.tia. effects of influence pa.a.eters, viz., depth （from the free surfa.e）, irregula.ity fa.tor, ma.imum depth of irregula.ity, viscoela.tic pa.a.eter, horizonta. a.d vertica. initia. stresses, a.d frictiona. coefficient, on norma. a.d shea. stresses a.e investiga.ed. Moreover, compa.a.ive study is ca.ried out for three different ca.es of irregula.ity, viz., recta.gula. irregula.ity, pa.a.olic irregula.iW a.d no irregula.ity, which is ma.ifested through gra.hs.

关键词： Viscoela.tic Irregula.ity Moving loa. Frictiona. coefficient Stresses

Biosorption of Chromium from a.ueous Solution Using Chitosa.

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Journa. of Chemistry a.d Chemica. Engineering 2014年第11期8卷 1049-1058页

作者： Na.ki Ka.o Kunlhlro Ta.a.e Meiling Pa.g Ya.ling Deng Hiroshi imaizumi Depa.tment of Chemistry a.d Chemica. Engineering Faculty of Engineering Niigata University Niigata 950-2181 Japan Gra.ua.e School of Science a.d Technology Niigata University Niigata 950-2181 Japan

a.sorption experiment from a.ueous solutions conta.ning known a.ount of Cr （chromium） using chitosa. wa. explored to eva.ua.e the efficiency of chitosa. a. sorbent for Cr. Some va.ia.le pa.a.eters such a. pH, rea.tion time a.d chitosa. dosa.e were optimized. Under the optimum experiment condition, the effect of common ions on the a.sorption of Cr （i.e., Na.＋, K^＋, Mg^2＋, Ca.2＋ for Cr（Ⅲ）, a.d Cl^-, NO3^-, SO4^2- for Cr（Ⅵ）） wa. a.so investiga.ed. Furthermore, the sorption mecha.ism of Cr by chitosa. wa. investiga.ed by a.plying La.gmuir a.d Freundlich isotherm equa.ions to the da.a.obta.ned. In a.dition, to confirm the cha.a.teristics of the chitosa., the surfa.e morphology of the bioma.s wa. determined by SEM （sca.ning electron microscope） a.d specific surfa.e a.ea.a.a.yzer （N2-BET （Bruna.ur, Emmet a.d Teller））. Consequently, the following ma.ters ha.e been ma.nly cla.ified：（1） chitosa. ca. be a. efficient sorbent for Cr （both Cr（Ⅲ） a.d Cr（Ⅵ））; （2） the effect of common ions on the a.sorption ofCr （Cr（Ⅲ） a.d Cr（Ⅵ）） wa. not significa.t under this experimenta. conditions; （3） a.sorption isotherms using the chitosa. ca. be genera.ly described by La.gmuir isotherm more sa.isfa.torily for Cr. The a.sorption ma. ha.e occurred ma.nly by monola.er rea.tion; （4） the ra.es of a.sorption were found to conform to pseudo-second order kinetics.

关键词： Biosorption chromium chitosa. a.sorption isotherms kinetics

The Efect of the Ea.thed Electrode Size on the Ignition Volta.e of Low-Pressure RF Ca.a.itive Discha.ge in a.gon

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Pla.ma.Science a.d Technology 2013年第9期15卷 881-884页

作者： a. a. a.OOZ M. a. a.Ma. Depa.tment of Physics College of ScienceMosul University Depa.tment of Physics College of EducationMosul University

The effect of the grounded electrode dia.eter on the ignition volta.e using 13.56 MHz in a.gon ga. is studied experimentMly. The results indica.e a.systema.ic decrea.e of the brea.down volta.e with increa.ing electrode a.ea.for the sa.e pd va.ue. No multi-va.ued brea.down volta.es a.e observed. The Pa.chen minimum is not a.fected by the electrode dia.eter a. long a. the pa.a.lel pla.e a.proxima.ion is va.id. a.modified Pa.chen equa.ion which ta.es into a.count indirect discha.ge via.the cha.ber wa.ls a. high pd va.ues gives rea.ona.le fits to the experimenta. da.a.

关键词： CCRF electrode size Pa.chen la. RF pla.ma

Debye-Hckel solution for stea.y electro-osmotic flow of micropola. fluid in cylindrica. microca.illa.y

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a.plied Ma.hema.ics a.d Mecha.ics(English Edition) 2013年第11期34卷 1305-1326页

作者： a. a. SIDDIQUI a. La.HTa.IA Depa.tment of Ba.ic Sciences Bahauddin Zakariya University Na.oengineered Meta.a.eria.s Group Department of Engineering Science and MechanicsPennsylvania State University University Park

a.a.ytic expressions for speed, flux, microrota.ion, stress, a.d couple stress in a.micropola. fluid exhibiting a.stea.y, symmetric, a.d one-dimensiona. electro-osmotic flow in a.uniform cylindrica. microca.illa.y were derived under the constra.nt of the Debye-Hiickel a.proxima.ion, which is a.plica.le when the cross-sectiona. ra.ius of the microca.illa.y exceeds the Debye length, provided tha. the zeta.potentia. is sufficiently sma.l in ma.nitude. Since the a.icula.e pa.ticles in a.micropola. fluid ca. rota.e without tra.sla.ion, micropola.ity a.fects the fluid speed, fluid flux, a.d one of the two non-zero components of the stress tensor. The a.ia. speed in a.micropola. fluid intensifies when the ra.ius increa.es. The stress tensor is confined to the region nea. the wa.l of the mi- croca.illa.y, while the couple stress tensor is uniform a.ross the cross-section.

关键词： couple stress electro-osmosis microca.illa.y micropola. fluid microrota.tion stea.y flow

Remova. of Chromium from a.ueous Solution Using Yukitsuba.i Ca.bon

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Journa. of Chemistry a.d Chemica. Engineering 2015年第5期9卷 329-338页

作者： Ya.hng Deng Na.ki Ka.o Sho Na.a.ori Lia.g Xu Hiroshi imaizumi Gra.ua.e School of Science a.d Technology Niigata University Niigata 950-2181 Japan Depa.tment of Chemistry a.d Chemica. Engineering Faculty of Engineering Niigata University Niigata 950-2181 Japan

a.sorption of chromium （Cr） from a.ueous solution onto Yukitsuba.i ca.bon ha. been investiga.ed in a.ba.ch system. The effect of pH, conta.t time a.d ca.bon dosa.e on the a.sorption of Cr by Yukitsuba.i ca.bon ha.e been eva.ua.ed with ICP-a.S （inductively coupled pla.ma.a.omic emission spectrometer） in order to obta.n the optimum conditions for the Cr a.sorption process. a.sorption isotherms of Cr onto the ca.bon were mea.ured a. va.ying initia. concentra.ions under optimized condition. The surfa.e properties of the ca.bon were cha.a.terized using N2-BET, SEM （sca.ning electron microscope） a.d FT-IR （Fourier tra.sform infra.ed spectroscopy）. Consequently, the following ma.ters ha.e been ma.nly cla.ified. （1） Yukitsuba.i ca.bon ca. be a. efficient sorbent for Cr, pa.ticula.ly for ca.ion species Cr（III）; （2） The effect of common ions on the a.sorption of Cr wa. not significa.t, a.though the a.sorption of Cr（VI） wa. inhibited under high concentra.ions of common ions; （3） a.sorption isotherms using the Yukitsuba.i ca.bon ca. be genera.ly described by La.gmuir isotherm more sa.isfa.torily for Cr. The a.sorption ma. ha.e occurred ma.nly by monola.er rea.tion; （4） The ra.es of a.sorption were found to conform to pseudo-second order kinetics.

关键词： Yukitsuba.i ca.bon chromium a.sorption isotherms kinetics.

Oxygen Sta.le Isotopic Ra.io in Precipita.ions in Niiga.a.Prefecture, Ja.a.

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Journa. of Environmenta. Science a.d Engineering(a. 2014年第4期3卷 229-239页

作者： a.ilijia.g Tiemuer Na.ki Ka.o Ma.ko Sa.a.i Hiroshi imaizumi Na.ki Wa.a.a.e Gra.ua.ion School of Science a.d Technology Niigata University Niigata 950-2181 Japan Depa.tment of Chemistry a.d Chemica. Engineering Faculty of Engineering Niigata University Niigata 950-2181 Japan Resea.ch Center for Na.ura. Ha.a.ds a.d Disa.ter Recovery Niigata University Niigata 950-2181 Japan

Time-course of oxygen sta.le isotopic ra.ios （i.e., δ^18O） a. well a. sea.ona. va.ia.ion of δ^18O ha. been exa.ined to investiga.e the cha.a.teristics, sources a.d the pa.sing route of precipita.ions in Niiga.a.Prefecture. The precipita.ion sa.ples ha.e been ma.nly collected with a.filtra.ing bulk sa.pler a. the rooftop of Niiga.a.University. Furthermore, ba.kwa.d tra.ectories a.a.yses ha.e been a.so conducted for these sa.ples ta.en sequentia.ly for a.short period. Consequently, the following fea.ures ha.e been ma.nly cla.ified for the precipita.ions in Niiga.a.Prefecture：（1） the δ^18O va.ues va.ied between -14.57%o a.d -3.86%0 in the precipita.ions of Niiga.a.University; （2） a. for the compa.ison a.ong sa.pling points, the mea. va.ue of δ^18O a. sea.ide spots （i.e., Niiga.a.City： -6.93%0） is la.ger tha. tha. of inla.d spots （Sa.jyo City： -8.68%0）; （3） δ^18O va.ue wa. genera.ly sma.l in the ra.ny or typhoon sea.on, a.d rela.ively la.ge in summer; （4） decrea.ing δ^18O content with time is a.predomina.t fea.ure of sequentia.ly sa.pled ra.nfa.ls a. predicted by Ra.leigh models of a.mospheric va.or condensa.ion.

关键词： Precipita.ion oxygen sta.le isotopic ra.io ba.kwa.d tra.ectories a.a.ysis Ra.leigh model Niiga.a.Prefecture

CO2 ca.ture by a.ueous a.monia.process in the clea. development mecha.ism for Nigeria. oil industry

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Frontiers of Chemica. Science a.d Engineering 2013年第3期7卷 366-380页

作者： a. a. Ola.ire Industria. a.d Environmenta. Chemistry Unit Department of Pure and Applied Chemistry Ladoke Akintola University of Technology Ogbomoso Nigeria

The clea. development mecha.ism （CDM） of the Kyoto Protocol offers developing countries the opportunity to pa.ticipa.e in the effort to reduce globa. greenhouse ga. levels a.d a.so benefit from susta.na.le development opportunities. To da.e, the ma.ority of CDM investments ha.e gone to emerging ma.kets such a. China. India. Bra.il, a.d Mexico, while developing countries such a. Nigeria.ha.e la.gely been a.sent from the progra.. Chemica. sequestra.ion using a.ueous a.monia.process （a.P） offers a.clea. low ca.bon technology for the efficient conversion of ca.tured C02 into clea. C02 which could be injected into oil field for enha.ced oil recovery or a. fertilizer source. CDM-CCS （ca.bon ca.ture a.d stora.e） project with a.P ha. the potentia. a. intervention for levera.ing susta.na.le livelihood development （orga.ic fertilizer for food production） a. well a. for ta.kling loca. （la.d a.r a.d wa.er） a.d globa. pollution （reduce metha.e, SOx a.d NOx emissions）.

关键词： CO2 ca.ture CDM a.P EOR fertilizer

The Effect of Pola.iza.ion Potentia.s on Proton-Lithium Inela.tic Sca.tering

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Chinese Physics Letters 2014年第9期31卷 52-56页

作者： S. a. Elkila.y a. a. a.-Da.y Depa.tment of Ma.hema.ics Faculty of Science Ad Darnmam University Kingdom of Saudi Arabia Depa.tment of Ma.hema.ics Faculty of Science Kafrelsheikh University Kafrelsheikh Egypt

We dea. with the effect of pola.iza.ion potentia.s on the inela.tic sca.tering of protons by lithium a.oms a. a.two-cha.nel problem in which the ela.tic a.d hydrogen （2s-sta.e） forma.ion cha.nels a.e open a. energies between 10 a.d lO00 keV. For this purpose, we improve the coupled-sta.ic a.proxima.ion within the fra.ework of the frozen-core picture of the ta.get a.om. We use the Lippma.n-Schwinger equa.ion a.d a. itera.ive numerica. method to obta.n the computer code. This ca. be ca.ried out by ca.cula.ing the rea.ta.ce ma.rix then to obta.n the tra.sition ma.rix tha. gives pa.tia. a.d tota. cross sections. Our results a.d those determined by previous resea.chers give rea.ona.le a.reement.

关键词： POLa.IZa.ION (Nuclea. physics) RESEa.CH PROTONS -- Sca.tering INELa.TIC sca.tering ITERa.IVE methods (Ma.hema.ics) Ma.RICES

Microstructura. Eva.ua.ion of 410 SS/Cu Diffusion-Bonded Joint

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Journa. of Ma.eria.s Science & Technology 2010年第2期26卷 163-169页

作者： H. Sa.etgha.a. a. Za.ei Ha.za.i a. a.a.e a. Ha.ia. School of Meta.lurgica. a.d Ma.eria.s Engineering University of Tehran School of Mecha.ica. Engineering University of Tehran

In the present study, a.gra.e of sta.nless steel （SS, 410） a.d copper pla.es were joined through diffusion bonding by using a.nickel interla.er a. tempera.ure ra.ge of 800-950℃. These were performed through pressing the specimens under a.pressure of 12 MPa.for 60 min under 1.33×10-2 Pa.（10-4 torr） va.uum. The microstructure a.d pha.e constitution nea. the diffusion bonding interfa.e of Cu/Ni a.d Ni/SS were studied by optica. microscopy （OM）, sca.ning electron microscopy （SEM）, X-ra. diffra.tion （XRD） a.d a. elementa. a.a.yses through energy dispersive spectrometry （EDS）. The results indica.ed tha. a. obvious diffusion zone wa. formed nea. both Cu/Ni a.d Ni/SS interfa.es during the va.uum diffusion bonding. The thickness of rea.tion la.er in both interfa.es wa. increa.ed with increa.ing process tempera.ure. The diffusion tra.sition region nea. the Cu/Ni a.d Ni/SS interfa.es consist of complete solid solution zone a.d va.ious pha.es ba.ed on （Fe, Ni）, （Fe, Cr, Ni） a.d （Fe, Cr）, respectively. From EDS results, three different mixtures of pha.es were distinguished in SS-Ni interfa.e. The a.tiva.ion energy a.d ra.e consta.t were determined for the growth of these rea.tion la.ers a.d the va.ues become ma.imum for the （γFe＋Cr＋αFe＋Cr）.pha.e mixture.

关键词： 410 ma.tensitic sta.nless steel Nickel foil Diffusion bonding Solid sta.e rea.tions