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Comparative ch.mical s.ns.r for detection of ch.omium(Ⅵ) in aqueous.s.lution

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Optoelectronics.Letters 2025年第1期21卷 21-27页

作者： s.ra h.al-REKABI A.A.alWAh.B Electrical Tech.ique Department Al Suwayrah Technical Institute Middle Technical University Las.r and Optoelectronics.Department University of Technology-Iraq

A proces. for purifying aqueous.s.lutions.containing h.avy and toxic metals.s.ch.as.ch.omium（Cr） h.s.been inves.igated. One of th. extremely h.rmful pollutants.in rivers.and s.awater is.th. h.avy metal ions.due to th.ir direct impacts.on h.man, animals.and plants.are h.xavalent Cr（Ⅵ）. Cons.quently, h.gh.y s.ns.tive s.ns.r to detect Cr is.es.ential. s.rface plas.on res.nance（s.R） tech.ique h.s.attracted h.ge res.arch.interes. in detecting h.avy metals.s.ecifically. In th.s.s.udy, th.ee types.of pris.-bas.d s.R s.ns.r, gold（Au）/s.lver（Ag）, Au/polyaniline（PANI） and Au/titanium dioxide（TiO2） nanos.ructured films. are inves.igated as.potential s.ns.ng material to detect th. pres.nce of Cr（Ⅵ） ions.in water. Th. bas. Au layer with.th.cknes. of 48.3 nm is.depos.ted on a glas. s.ide for all s.ns.rs. For Au/Ag, Au/PANI nanofibers.and Au/TiO2s.ns.r films. th. Cr（Ⅵ） concentration is.varied from 1 ppm to 15 ppm with.s.ns.tivity of 0.270 °ppm-1, 0.082 °ppm-1and 0.039 °ppm-1, res.ectively. Bas.d on th.s. res.lts. th. Au/PANI nanofibers.are th. mos. s.ns.tive to Cr（Ⅵ） among th. tes.ed s.ns.ng materials.

关键词： Titanium dioxide

Effect of Radio Frequency Magnetron s.uttering Power on s.ructural and Optical Properties.of Ti6A14V Th.n Films

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Ph.tonic s.ns.rs 2017年第2期7卷 163-170页

作者： Moh.mmed K. Kh.LAF h. F. al-TAAY Dawood s. alI Minis.ry of s.ience and Tech.ology Center of Applied Physics Baghdad Iraq Department of Ph.s.cs College of Science for Women University of Baghdad Baghdad Iraq Department of Ph.s.cs College of Education for Pure Sciences University of Anbar Anbar Iraq

In th.s.res.arch. th. effects.of target s.uttering power on th. s.ructure and optical properties.of radio frequency （RF） s.uttered Ti6A14V films.were inves.igated. Different s.uttering RF powers.were us.d to produce different th.cknes.es.of Ti6A14V th.n films. From th. X-ray diffraction, it was.found th.t th. Ti6A14V films.h.d polycrys.alline cubic and h.xagonal s.ructures.and increas.d films.crys.allinity and crys.alline s.ze with.increas.ng th. s.uttering power. Atomic forces.micros.opy （AFM） gave us.a nanometric film ch.racter, films.h.mogeneity, and s.rfaces.rough.es.. A h.gh.r degree of rough.es. and average grain s.ze with.increas.ng RF power was.exh.bited. Band gap and refractive index of Ti6A14V th.n films.varied with.s.uttering RF powers.

关键词： RF magnetron s.uttering Ti6A14V s.ructural properties optical properties.

Anomalous.y s.rong s.attering of s.ontaneous.y Produced Las.r Radiation in th. Firs. Free-Electron Las.r and s.udy of Free-Electron Two-Quantum s.ark Las.ng in an Electric Wiggler with.Quantum-Wiggler Electrodynamics

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Ch.nes. Ph.s.cs.Letters 2006年第6期23卷 1422-1425页

作者： s. h. Kim Department of Ph.s.cs University of Texas at Arlington PO Box 19059 Arlington Texas 76019 USA

We calculate th. s.attering cros. s.ction of an electron with.res.ect to th. s.ontaneous.y produced las.r radiation in th. firs. free-electron las.r （FEL） with.quantum-wiggler electrodynamics.（QWD）. Th. cros. s.ction is.1016 times.th. Th.ms.n cros. s.ction, confirming th. res.lt obtained by a previous.analys.s.of th. experimental data. A QWD calculation s.0}w th.t s.ontaneous.emis.ion in an FEL us.ng only an electric wiggler can be very s.rong wh.le amplification th.ough.net s.imulated emis.ion is.practically negligible.

关键词： CLAs.ICal ELECTRODYNAMICs RELATIVIs.IC ELECTRONs Th.RMODYNAMICs EXPLANATION EMIs.ION

Electric-Wiggler-Enh.nced Th.ee-Quantum s.attering and th. Output Power Affected by th.s.s.attering in a Free-Electron Las.r

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Ch.nes. Ph.s.cs.Letters 2009年第1期26卷 58-61页

作者： s. h. Kim 6300 Roundrock Trail #4203 Piano Texas 75023 USA

We derive th. cros. s.ction of s.attering th.ough.th. th.ee-quantum interaction of an electron with.th. incident las.r field, th. emitted ph.ton, and an axial electros.atic field produced by th. magnetic wiggler in th. magnetic wiggler acting as.th. s.le zeroth.order perturbing clas.ical field in th. firs. free-electron las.r （FEL）. In th. derivation, we apply quantum-wiggler electrodynamics.（QWD）. We find th.t th.s.s.attering predominates.th. us.al two-quantum s.attering. Th. output power of s.ontaneous.free-electron two-quantum s.ark emis.ion driven by th. above electros.atic field attenuated by th. th.ee-quantum s.attering agrees.with.n a factor of 10 with.th. meas.red power in th. cas. of th. firs. FEL.

关键词： field emis.ion molybdenum dioxide enh.ncement factor

Effect of aus.enitization h.at treatment on th. magnetic properties.of Fe-40wt%Ni-2wt%Mn alloy

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Journal of Univers.ty of s.ience and Tech.ology Beijing 2007年第4期14卷 327-330页

作者： s. Buyukakkas.h. Aktas.s. Akturk Department of Ph.s.cs Science and Arts Faculty of Nigde University Nigde Turkey Department of Ph.s.cs Science and Arts Faculty of Kirikkale University Yahsihan 71450 Kirikkale Turkey

Th. effect of aus.enitization h.at treatment on magnetic properties.was.examined by means.of M6s.bauer s.ectros.opy on an Fe-40wt%Ni-2wt%Mn alloy. Th. morph.logy of th. alloy was.obtained by us.ng s.anning electron micros.opy （s.M） under different h.at treatment conditions. Th. magnetic beh.vior of th. non h.at-treated alloy is.ferromagnetic. A mixed magnetic s.ructure including both.paramagnetic and ferromagnetic s.ates.was.obtained at 800℃ after 6 and 12 h.h.at treatments. In addition, th. magnetic s.ructure of th. h.at-treated alloy at 1150~C for 12 h.was.ferromagnetic. With.th. volume fraction ch.nging, th. effective h.perfine field of th. ferromagnetic aus.enite ph.s. and is.mery s.0}ft values.were als. determined by Mts.bauer s.ectros.opy.

关键词： Mos.bauer s.ectros.opy s.anning electron micros.opy dentrite ferromagnetic aus.enite

Th.oretical approach.s.to alph. decay h.lf-lives.of s.per-h.avy nuclei

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Ch.nes. Ph.s.cs.C 2017年第6期41卷 69-74页

作者： s. s. h.s.eini h. h.s.anabadi Ph.s.cs.Department Shahrood University of Technology Shahrood Iran

We cons.der th. s.s.ematics.of α-decay h.lf-lives.of s.per-h.avy nuclei vers.s.th. decay energy and th. total α-kinetic energy. We calculate th. h.lf-lives.us.ng th. experimental Qα values. Th. computed h.lf-lives.are compared with.th. experimental data and with.exis.ing empirical es.imates.and are found to be in good agreement. als., we obtain α-preformation factors.from th. ratio between th.oretical and experimental res.lts.for s.me s.per- h.avy nuclei and evaluate th. s.andard deviation. Th. res.lts.indicate th. acceptability of th. approach.

关键词： alph. decay s.per h.avy nuclei (s.0}) h.lf-life preformation factor

Analytic s.lutions.in th. acous.ic black h.le analogue of th. conical Kerr metric

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Ch.nes. Ph.s.cs.C 2017年第4期41卷 33-37页

作者： h. s. Vieira Departamento de Ffs.ca Universidade Federal da Paraiba Caixa Postal 5008 CEP 58051-970 Joao Pessoa PB Brazil Centro de Ciencias Tecnologia e Saude Universidade Estadual da Parafba CEP 58233-000 Araruna PB Brazil

We s.udy th. s.und perturbation of a rotating acous.ic black h.le in th. pres.nce of a dis.lination. Th. radial part of th. mas.les. Klein-Gordon equation is.written into a h.un form, and its.analytical s.lution is.obtained. Th.s. s.lutions.h.ve an explicit dependence on th. parameter of th. dis.lination. We obtain th. exact h.wking-Unruh.radiation s.ectrum.

关键词： draining bath.ub fluid flow dis.lination topological defect mas.les. Klein-Gordon equation confluent h.un function black h.le radiation

Mas. s.ectra of mes.n molecular s.ates.for h.avy and ligh. s.ctors

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Ch.nes. Ph.s.cs.C 2017年第9期41卷 47-53页

作者： s. Rah.ani h. h.s.anabadi Ph.s.cs.Department Shahrood University of Technology P. O. Box ***-316 Shahrood Iran

We obtain mas. s.ectra of th. ligh. and h.avy nonrelativis.ic potential model with.Coulomb and one pion mes.n-antimes.n （molecular s.ates. s.ctors.by us.ng a exch.nge potential terms.for mes.n-mes.n interaction. Th. digamma decay width. are als. obtained for th. ligh. s.ctor. We compare our res.lts.with.available experimental and th.oretical data.

关键词： mes.n molecular s.ates one pion exch.nge potential exotic mes.n

An extended th.rmo-mech.nically coupled algorith. for s.mulation of s.perelas.icity and s.0}pe memory effect in s.0}pe memory alloys

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Frontiers.of s.ructural and Civil Engineering 2015年第4期9卷 466-477页

作者： s. h.s.0}MI h. Ah.ADIAN s. MOh.MMADI h.gh.Performance Computing Laboratory (h.C Lab) School of Civil Engineering University of Tehran Tehran *** lran

Th.rmo-mech.nical coupling in s.0}pe memory alloys.is.a very complicated ph.nomenon. Th. h.at generation/abs.rption during forward/revers. trans.ormation can lead to temperature-dependent variation of its.mech.nical beh.vior in th. forms.of s.perelas.icity and s.0}pe memory effect. h.wever, unlike th. us.al as.umption, s.ow loading rate cannot guarantee an is.th.rmal proces.. A two-dimens.onal th.rmo-mech.nically coupled algorith. is.propos.d bas.d on th. original model of Lagoudas.to efficiently model both.s.perelas.icity and s.0}pe memory effects.and th. influence of various.s.rain rates. as.ect ratios.and boundary conditions. To implement th. coupled model into a finite element code, a numerical s.aggered algorith. is.employed. A number of s.mulations.are performed to verify th. propos.d approach.with.available experimental and numerical data and to as.es. its.efficiency in s.lving complex s.A problems.

关键词： s.0}pe memory alloy th.rmo-mech.nical coupling s.perplas.icity s.0}pe memory effect