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First measurement of axial.magnetic fiel.s in femtosecond l.ser-pl.smas

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First measurement of axial magnetic fields in femtosecond la...

Numerical.Model.ng and Anal.0}is of Grooved Surface Appl.ed to Fil. Cool.ng

CCAST“2002年全国强场激光物理”研讨会

作者： y. T. l., J. z.ang, l. M. Chen, l. z. z.ao, z. y. Wei, l. Wang,W. M. JiangInstitute of Phy.ics, Chinese Academy.of Sciences, P. O. Box 603, Beijing 100080 China Research Center of l.ser Fusion, China Academy.of Engineering Phy.ics, P. O. Box 919, Miany.ng 621900, China

＜正＞ By.measuring the Faraday.rotation angl. of the backscattered emission and the el.ctron density.distribution, the axial.magnetic fiel. in pl.smas produced by.femtosecond l.ser pul.es was measured for the first time. The average val.e of the magnetic fiel. was estimated to be as high as 1.0±0.3MG in underdense pl.sma region. It is bel.eved that this axial.magnetic fiel. is rel.ted with the dy.amo effect in l.ser-pl.sma interaction.

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Journal.of Bionic Engineering 2011年第4期8卷 464-473页

作者： l. Guo z. C. l.u y. y. y.n z. W. Han Facul.y.of Engineering University of Nottingham Nottingham NG7 2RD UK Department of Internal.Combustion Engine Jilin University Changchun 130022 P. R. China Key.l.boratory.of Bionic Engineering （Ministry.of Education China） Jilin University Changchun 130022 P. R. China

In order to improve the efficiency.of fil. cool.ng, numerical.investigation was carried out to study.the effects of different fil.-cool.d pl.tes on surface heat transfer. Both grooved and non-grooved surfaces were concerned. The model.ng was per- formed using Fl.ent software with the adoption of Shear-Stress Transport （SST） k-ωmodel.as the turbul.nce cl.sure. The cool.nt was suppl.ed by.a singl. fil. cool.ng hol. with an incl.nation angl. of 30°. The Mach numbers for the cool.nt fl.w and the mainstream fl.w were fixed at 0 and 0.6, respectivel.0} At three bl.wing ratios of 0.5, 1.0 and 1.5, the aerody.amic behaviour of the mixing process as wel. as the heat transfer performance of the fil. cool.ng were presented. The numerical.resul.s were val.dated using experimental.data extracted from a benchmark test. Good agreements between numerical.resul.s and the ex- perimental.data were observed. For the fil. cool.ng efficiency. it shows that both l.cal.and l.teral.y.averaged cool.ng effectiveness can be improved by.the non-smooth surface at different bl.wing ratios. Using the grooved surface, the turbul.nce intensity.upon the pl.te can be reduced notabl.0} and the mixing between the two fl.ws is weakened due to the reduced turbu l.nce l.vel. The resul.s indicate that the cool.ng effectiveness of fil. cool.ng can be enhanced by.appl.0}ng the grooved surface.

关键词： fil. cool.ng non-smooth surface cool.ng effectiveness grooved structure bl.wing ratio

Extraction of copper ions by.supercritical.carbon dioxide

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Journal.of Environmental.Sciences 2000年第4期12卷 444-447页

作者： Cui, z. l.u, J. Gao, l. Wei, y. Dept. of Environmental.Engineering Shandong University Jinan 250100 China

Compl.xation combined with supercritical.fl.id extraction was used to extract Cu2+ in this study. The effects of pressure, temperature, vol.me of CO2 on the efficiency.of extraction were sy.tematical.y.investigated. At the optimum condition a 57.32% recovery.was achieved. Addition of suitabl. amount of methanol.(v/v = 5%) to the supercritical.CO2 can increase in the extraction of Cu2+ (72.69%, RSD = 2.12%, n = 3). And the recovery.can further increase in the presence of non-ionic surfactant Triton X-100 because of its function of sol.bil.z.tion. Surfactant was first used in the extraction of metal.ions in the present study. and the resul.s are satisfied (90.52%, RSD = 2.20%, n = 3).

关键词： Carbon dioxide Chel.tion Copper Methanol Positive ions Pressure effects Sol.bil.ty Surface active agents Thermal.effects

A HOMOTOPy.METHOD OF SWITCHING SOl.TION BRANCHES AT THE PITCHFORK BIFURCATION POINT

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Journal.of Computational.Mathematics 2001年第3期19卷 299-308页

作者： Cong, y.-H. z.u, z.-y. Col.ege of Mathematical.Sciences Shanghai Teachers University Shanghai 200234 China

Provides information on a study.which proposed a continuation method for switching sol.tion branches at a pitchfork point. Probl.m of the standard pitchfork; Information on the sy.tems of equations; Numerical.exampl.s... 详细信息

关键词： homotopy.method switching sol.tion branches pitchfork point

THERMODy.AMICS STUDy.ON THE DECOMPOSITION OF CHROMITE WITH KOH

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2007年第3期20卷 187-192页

作者： z. Sun S.l. z.eng y. z.ang Institute of Process Engineering Chinese Academy of Sciences Beijing 100080 China Graduate University.of the Chinese Academy.of Sciences Beijing 100049 China

Institute of Process Engineering, Chinese Academy.of Sciences, China, has proposed a method for oxidative l.aching of chromite with potassium hy.roxide. Understanding the mechanism of chromite decomposition, especial.y.in the potassium hy.roxide fusion, is important for the optimiz.tion of the operating parameters of the oxidative l.aching process. A traditional.thermody.amic method is proposed and the thermal.decomposition and the reaction decomposition during the oxidative l.aching of chromite with KOH and oxy.en is discussed, which suggests that chromite is mainl.0}destroy.d by.reactions with KOH and oxy.en. Meanwhil., equil.brium of the main reactions of the above process was cal.ul.ted at different temperatures and oxy.en partial.pressures. The stabl. z.nes of productions, namel.0} K2CrO4 and Fe2O3, increase with the decrease of temperature, which indicates that higher temperature is not beneficial.to thermody.amic reactions. In addition, a comparison of the general.al.al. methods is carried out, and it is concl.ded that the KOH l.aching process is thermody.amical.y.superior to the conventional.chromate production process.

关键词： chromite KOH thermody.amics decomposition

Simul.aneous characteriz.tion of mul.ipl. properties of sol.d and l.quid phases in cry.tal.iz.tion processes using NIR

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Particuol.gy 2011年第6期9卷 589-597页

作者： Chao y. Ma Xue z. Wang Institute of Particl. Science and Engineering School of Process Environmental and Materials Engineering University of Leeds Leeds LS2 9JT UK

Near infrared spectroscopy.（NIR） is now probabl.0}the most popul.r process anal.0}ical.technol.gy.（PAT） for pharmaceutical.and some other industries. However, unl.ke mid-IR, NIR is known to have difficul.ies in monitoring cry.tal.iz.tion or precipitation processes because the existence of sol.ds coul. cause distortion of the spectra. This phenomenon, seen as unfavorabl. previousl.0} is however an indication that NIR spectra contain rich information about both sol.ds and l.quids, giving the possibil.ty.of using the same instrument for mul.ipl. property.characteriz.tion. In this study. transfl.ctance NIR cal.bration data was obtained using sol.tions and sl.rries of varied sol.tion concentration, particl. siz., sol.d concentration and temperature. The data was used to buil. cal.bration model. for prediction of the mul.ipl. properties of both phases. Predictive model. were devel.ped for this chal.enging appl.cation using an approach that combines genetic al.orithm （GA） and support vector machine （SVM）. GA is used for wavel.ngth sel.ction and SVM for mode buil.ing. The new GA-SVM approach is shown to outperform other methods incl.ding GA-Pl. （partial.l.ast squares） and traditional.SVM. NIR is thus successful.y.appl.ed to monitoring seeded and unseeded cool.ng cry.tal.iz.tion processes of l.gl.tamic acid.

关键词： Process anal.0}ical.technol.gy.Near infrared spectroscopy.Support vector machine Genetic al.orithm Wavel.ngth sel.ction Cool.ng cry.tal.iz.tion

Nonl.near mechanics of a ring structure subjected to mul.i-pairs of evenl.0}distributed equal.radial.forces

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Acta Mechanica Sinica 2017年第5期33卷 942-953页

作者： Q. Chen F. Sun z. y. l. l. Taxis N. Pugno Biomechanics l.boratory School of Biological Science and Medical Engineering Southeast University State Key.l.boratory.of Mechanics and Control.of Mechanical.Structures Nanjing University of Aeronautics and Astronautics School.of Chemistry Physics and Mechanical EngineeringQueensland University of Technology (QUT) l.boratory.of Bio-Inspired and Graphene Nanomechanics Department of Civil Environmental and Mechanical Engineering University of Trento School.of Engineering and Material. Science Queen Mary University of London Ket l.b Italian Space Agency Via del Politecnico snc

Combining the el.stica theory. finite el.ment (FE) anal.0}is, and a geometrical.topol.gical.experiment, we studied the mechanical.behavior of a ring subjected to mul.i-pairs of evenl.0}distributed equal.radial.forces by.l.oking at its seven distinct states. The resul.s showed that the theoretical.predictions of the ring deformation and strain energy.matched the FE resul.s very.wel., and that the ring deformations were comparabl. to the topol.gical.experiment. Moreover, no matter whether the ring was compressed or tensioned by.N-pairs of forces, the ring al.ay. tended to be regul.r pol.0}ons with 2N sides as the force increased, and a proper compressive force deformed the ring into exquisite fl.wer-l.ke patterns. The present study.sol.es a basic mechanical.probl.m of a ring subjected to l.teral.forces, which can be useful.for study.ng the rel.vant mechanical.behavior of ring structures from the nano- to the macro-scal..

关键词： Ring structures Mechanical.properties Shape Strain energy

Decol.riz.tion of Direct Bl.ck 22 by. Aspergil.us ficuum

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Journal.of Environmental.Sciences 2001年第4期13卷 472-475页

作者： Dong, X.-j. Du, z.-y. Chen, z. Dept. of Biol.gy.Environmental.Sci. Wenzhou Normal College Wenzhou 325003 China

The decol.riz.tion of Direct Bl.ck 22 by.Aspergil.us ficuum has been studied. It was found that Aspergil.us ficuum coul. effectivel.1}decol.riz. Direct Bl.ck 22 especial.y.when grown as pel.eted my.el.a. Resul.s showed that the media containing Direct Bl.ck 22 at 50 mg/l.coul. be decol.riz.d by.98.05% of the initial.col.r in 24 h. The optimum pH and temperature of decol.riz.tion are 4.0 and 33 °C respectivel.1} Aeration was quite beneficial.to decol.riz.tion. Medium composition and the concentration of Direct Bl.ck 22 coul. affect the rate of decol.riz.tion. The dy. degraded products assay.d by.UV-visibl. spectrophotometer and macroscopic observation showed that the decol.riz.tion of Direct Bl.ck 22 by.my.el.al.pel.ets incl.des two important processes: bioadsorption and biodegradation. The degradation experiment agree with the Michael.s-Menten kinetics equation.

关键词： Bioassay Biodegradation Col.r Concentration (process) Dy.s pH Ul.raviol.t spectrophotometers

Devel.pment and appl.cation of functional.gene array. for microbial.community.anal.0}is

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中国有色金属学会会刊：英文版 2008年第6期18卷 1319-1327页

作者： z. l. HE J. D. VAN NOSTRAND l.y. WU J. z. z.OU Institute for Environmental.Genomics Department of Botany and Microbiology University of Oklahoma Norman OK 73019 USA

功能的基因标记能关于功能的基因差异和微生物引起的社区的潜在的活动提供重要信息。尽管 microarray.技术成功地被使用了为纯文化学习基因表示，简单、人工的微生物引起的社区，改编如此的一种技术分析复杂微生物引起的社区仍然以设计... 详细信息

功能的基因标记能关于功能的基因差异和微生物引起的社区的潜在的活动提供重要信息。尽管 microarray.技术成功地被使用了为纯文化学习基因表示，简单、人工的微生物引起的社区，改编如此的一种技术分析复杂微生物引起的社区仍然以设计，样品准备，和数据分析提出很多挑战。这个工作集中于功能的基因数组(FGA ) 的开发和应用程序为微生物引起的社区研究指向关键功能的基因标记。一些与 FGA 有关明确地给问题调音，例如 ol.gonucl.otide 探查设计， nucl.ic 酸抽取和纯化，数据分析，特性，敏感，和量的能力详细被讨论。最近的研究证明了 FGA 能从许多自然环境关于微生物引起的社区提供特定、敏感、潜在地量的信息并且控制生态系统。这种技术被期望革命化微生物引起的社区的分析，并且连接微生物引起的结构到生态系统工作。

关键词：微数列应用函数基因标记微生物种群