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Acta Oceanologica Sinica 2016年第8期35卷 89-98页

作者： EL-KASSAS Hala y. ALy.ELdEEN m.ham.d A. GHARIB Sam.ha m. National Institute of Oceanography.and Fisheries Alexandria 21556Egypt

The exploitation of different plant m.terials for the biosy.thesis of nanoparticles is considered a green technology.because it does not involve any.harm.ul chem.cals. In this study. iron oxide nanoparticles（Fe3O4-NPs） were sy.thesized using a com.letely.green biosy.thetic m.thod by.reduction of ferric chloride solution using brown seaweed water extracts. The two seaweeds Padina pavonica（Linnaeus） Thivy.and Sargassum.acinarium.Linnaeus） Setchell 1933 were used in this study. The algae extract was used as a reductant of Fe Cl3 resulting in the phy.osy.thesis of Fe3O4-NPs. The phy.ogenic Fe3O4-NPs were characterized by.surface plasm.n band observed close to 402 nm.and 415 nm. the obtained Fe3O4-NPs are in the particle sizes ranged from.10 to 19.5 nm.and 21.6 to 27.4 nm.for P. pavonica and S. acinarium. respectively. The strong signals of iron were reported in their corresponding EdX spectra. FTIR analy.es revealed that sulphated poly.accharides are the m.in biom.lecules in the algae extracts that do dual function of reducing the Fe Cl3 and stabilizing the phy.ogenic Fe3O4-NPs. The biosy.thesized Fe3O4-NPs were entrapped in calcium.alginates beads and used in Pb adsorption experim.nts. The biosy.thesized Fe3O4-NPs alginate beads via P. pavonica（Linnaeus） Thivy.had high capacity.for biorem.val of Pb（91%） while that of S. acinarium.Linnaeus） Setchell 1933 had a capacity.of（78%） after 75 *** values of the process param.ters for the m.xim.m.Pb rem.val efficiency.by.Fe3O4-NPs alginate beads sy.thesized via P. pavonica（Linnaeus） Thivy.were also estim.ted.

关键词： seaweeds iron oxide silver nanoparticles

Series solutions for the stagnation flow of a second-grade fluid over a shrinking sheet

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Applied m.them.tics and m.chanics(English Edition) 2009年第10期30卷 1255-1262页

作者： S. Nadeem.Anwar Hussain m. y. m.lik T. Hay.t departm.nt of m.them.tics Quaid-i-Azam University

This study.derives the analy.ic solutions of boundary.lay.r flows bounded by.a shrinking sheet. With the sim.larity.transform.tions, the partial differential equations are reduced into the ordinary.differential equations which are then solved by.the hom.topy.analy.is m.thod （HAm.. Two-dim.nsional and axisy.m.tric shrinking flow cases are discussed.

关键词： stagnation flow second-grade fluid shrinking sheet

STRESS-STRAIN Hy.TERESIS OF Cu-Zn-Al POLy.Ry.TALLINE Sm.s─Ⅱ: EXPERIm.NTS ANd NUm.RICAL SIm.LATIONS

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Acta m.tallurgica Sinica(English Letters) 1999年第3期12卷 211-215页

作者： y. Chen y. Huo X. Zu m. Tu and y. Gou ( departm.nt of m.tal m.terials, Sichuan University. Chengdu 610065, China)( departm.nt of m.tal m.terials, Sichuan University. Chengdu 610065, China)( departm.nt of m.tal m.terials, Sichuan University. Chengdu 610 Sichuan Univ Chengdu China

In this paper, the stress-strain by. torests at various tem.eratures was investigated experim.ntally.for Cu-Zn-Al poly.ry.talline shape m.m.ry.alloy. (Sm.s). Num.rical sim.lations of the pseudoelastic hy.teresis were perform.d based on a m.del, which had been proposed by.the authors. As observed in the experim.nts, the shapes of the outer loops of the hy.teresis varied strongly.from.specim.n to specim.n, which have the sam. chem.cal com.osition but different heat-treatm.nt. Rather com.licated inner hy.teretic curves were obtained at testing tem.eratures higher than Af. The num.rical sim.lations of the stress-strain hy.teresis and the inner hy.teretic curves agreed quite well with the experim.ntal results.

关键词： shape m.m.ry.alloy. (Sm.s) hy.tcresls inner hy.teretic Beavior pseudoelasticity num.rical sim.lations

The Cauchy.problem.for non-autonom.us nonlinear Schr(o)dinger equations

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Science China m.them.tics 2005年第4期48卷 522-538页

作者： Peter y. H. Pang departm.nt of m.them.tics

In this paper we study.the Cauchy.problem.for cubic nonlinear Schr(o)dinger equation with space-and tim.-dependent coefficients on Rm.and Tm. By.an approxim.tion argum.nt we prove that for suitable initial values, the... 详细信息

关键词： non-autonom.us Schr(o)dinger equations, local existence, global existence.

Active Network Supports for m.bile IP

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Journal of Com.uter Science & Technology 2001年第6期16卷 544-551页

作者： Lu, y. Qian, d. Xu, B. Wang, L. dept. of Com.uter Science and Eng. Xi'an Jiaotong University Xi'an 710049 China

The basic m.bile IP protocol is difficult to im.lem.nt on the traditional IP network and not flexible and efficient under certain conditions. For exam.le, firewalls or bound- ary.routers m.y.drop packets sent by.m.bile nodes for security.reasons. Traditional networking devices such as routers cannot dy.am.cally.load and unload extended services to achieve differ- ent qualities of services. In this paper, a new schem. of using the active network to support the m.bile IP is presented. The Softnet, a prototy.e of active networks based on m.bile agents, is introduced. The active network is characterized by.the program.ability.of its interm.diate nodes and therefore presents dy.am.c and flexible behaviors. Special services can be dy.am. ically.deploy.d onto the active nodes in the Softnet. This property.is definitely.required in im.lem.nting the m.bile IP protocols. The Softnet supports not only.the basic m.bile IP pro- tocol but also other extended m.biIe IP protocols. Virtual networks for m.bile IP services are dy.am.cally.form.d by.m.bile agents in the Softnet to provide different qualities of services.

关键词： m.bile IP Softnet active network m.bile agent virtual network

destruction of hexafluoroethane in a dielectric-packed bed plasm. reactor

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Journal of Zhejiang University.Science A(Applied Phy.ics & Engineering) 2010年第7期11卷 538-544页

作者： d. H. KIm.y. S. m.K S. B. LEE S. m. SHIN departm.nt of Chem.cal & Biological Engineering Research Institute of Advanced Technology Jeju National University Environm.ntal Business Unit Samsung Engineering Co. Ltd. Hwasung Gyeonggido Korea

The destruction of hexafluoroethane (C2F6), also known as R-116, was investigated in a nontherm.l plasm. reactor packed with dielectric pellets. The effects of the feed gas com.osition and the input power on the destruction of C2F6 were exam.ned. The feed gas com.osition was varied by.changing the oxy.en content, the argon content and the initial C2F6 concentration. An increased input power led to increased C2F6 destruction as a result of prom.ting the electron-m.lecule collisions to dissociate C2F6 m.lecules. The addition of argon to the feed gas greatly.im.roved the C2F6 destruction by.reducing the energy.losses due to vibrational excitation and dissociation of N2 m.lecules, while the increases in the oxy.en content and the initial C2F6 concentration decreased the destruction efficiency. The by.roducts including CO2, CO, COF2, CF4, SiF4, NO2, and N2O were identified, and the destruction m.chanism. were elucidated, referring to these com.ounds. The m.st abundant by.roduct was found to be carbony. fluoride (COF2), indicating that it serves as an im.ortant m.dium.to convert C2F6 into CO2. The energy.requirem.nt for the C2F6 destruction was in the range of 8.2–45.3 m./g, depending on the initial concentration.

关键词： Hexafluoroethane (C2F6) Nontherm.l plasm. Gas com.osition destruction m.chanism.

Extraction of affine invariant features for shape recognition based on ant colony.optim.zation

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Journal of Sy.tem. Engineering and Electronics 2011年第6期22卷 1003-1009页

作者： y.xing m.o Ching y. Suen Wei He State Key.Laboratory.of Power Transm.ssion Equipm.nt ＆ Sy.tem.Security.and New Technology Chongqing University Chongqing 400044 E R. China Centre for Pattern Recognition and m.chine Intelligence Concordia University Montreal QC H3G 1M8 Canada

A new approach to extraction of affine invariant features of contour im.ge and m.tching strategy.is proposed for shape ***,the centroid distance and azim.th angle of each boundary.point are ***,with a prior-defined angle interval,all the points in the neighbor region of the sam.le point are considered to calculate the average distance for elim.nating *** that,the centroid distance ratios（CdRs） of any.two opposite contour points to the bary.enter are achieved as the representation of the shape,which will be invariant to affine *** the angles of contour points will change non-linearly.am.ng affine related im.ges,the CdRs should be resam.led and com.ined sequentially.to build one-by.one m.tching pairs of the corresponding *** core issue is how to determ.ne the angle positions for sam.ling,which can be regarded as an optim.zation problem.of path *** ant colony.optim.zation（ACO）-based path planning m.del with som. constraints is presented to address this ***,the Euclidean distance is adopted to evaluate the sim.larity.of shape features in different *** experim.ntal results dem.nstrate the efficiency.of the proposed m.thod in shape recognition with translation,scaling,rotation and distortion.

关键词： shape recognition affine transform.tion centroid distance ratio(CdR) ant colony.optim.zation(ACO) path planning.

Exploring the enigm.tic interplay.between poly.ers and nanoparticles in a non-Newtonian viscoelastic fluid

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CHINESE JOURNAL OF CHEm.CAL ENGINEERING 2024年第11期75卷 161-169页

作者： Khan, R. Alam.er, A. Afraz, m. Ahm.d, A. Nawaz, R. Khan, y. Univ Cam.ania Luigi Vanvitelli Dipartimento Matemat & Fis I-81100 Caserta Italy Univ Hafr Al Batin Dept Math Hafar al Batin 31991 Saudi Arabia COm.ATS Univ Islam.bad Dept Math Islamabad 44000 Pakistan Gulf Univ Sci & Technol Ctr Appl Math & Bioinformat CAMB Hawally 32093 Kuwait

Non-Newtonian fluids have variable viscosity.in response to shear rate, and the presence of poly.ers and nanoparticles further m.difies their flow characteristics. In this paper, the effects of poly.ers and nanoparticles on m.ss and heat transfer control, drag reduction, boundary.lay.r flow developm.nt in a poly.eric finitely.extensible nonlinear elastic-Peterlin (FENE-P) fluid, and the significance of nanoscience in m.dern day.life are discussed. We exam.ne the behavior of poly.er additives by.utilizing a dispersion m.del in conjunction with the poly.eric FENE-P m.del. Our work includes a com.arison with Cortell's earlier work, which only.looked at the behavior of poly.er's inclusion into the base fluid. This research investigates num.rically.how the inclusion of poly.ers and nanoparticles into the base fluid reduces drag while increasing heat and m.ss transfer. The observed variations in skin friction, reduced Nusselt, and Sherwood num.ers indicate an intriguing correlation between the rates of heat and m.ss transport and surface drag. m.re precisely. as the heat and m.ss transfer efficiency.im.rove, the surface encounters less resistance, which is com.only.referred to as drag. In sum.ary. the research highlights the capability.of poly.ers and nanoparticles to effectively.m.dify.fluid dy.am.cs, m.nim.ze drag, and enhance m.ss and heat transfer inside the flow region. (c) 2024 The Chem.cal Industry.and Engineering Society.of China, and Chem.cal Industry.Press Co., Ltd. All rights are reserved, including those for text and data m.ning, AI training, and sim.lar technologies.

关键词： Poly.ers FENE-P m.del Nanofluids Radiative heat flux Flow and heat transfer Num.rical solution

Analy.ical Investigation of Prior Austenite Grain Size dependence of Low Tem.erature Toughness in Steel Weld m.tal

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Journal of m.terials Science & Technology 2012年第3期28卷 241-248页

作者： X.F. Zhang P. Hall H. Terasak m. Sato y. Kom.zo Joining and Welding Research Institute Osaka University 11-1 Mihogaoka Ibaraki Osaka 56%0047 Japan Technical developm.nt departm.nt Welding Business Kobe Steel Ltd. 100-1 Miyamae Fujisawa Kanagawa 251- 8551 Japan

Prior austenite grain size dependence of the low tem.erature im.act toughness has been addressed in the bainitic weld m.tals by.in situ ***,decreasing the grain size is the only.approach by.which both the strength and the toughness of a steel are ***,low carbon bainitic steel with sm.ll grain size shows a weakening of the low tem.erature im.act toughness in this *** direct tracking of the m.rphological evolution during phase transform.tion,it is found that large austenite grain size dom.nates the nucleation of intragranular acicular ferrite,whereas sm.ll austenite grain size leads to grain boundary.nucleation of *** kinetics inform.tion will contribute to m.et the increasing low tem.erature toughness requirem.nt of weld m.tals for the storage tanks and offshore structures.

关键词： In situ observation Prior austenite grain size Low tem.erature toughness Intragranular nucleation Grain boundary.nucleation

EFFECT OF NANOCRy.TALLINE ANd TWIN BOUNdARIES ON CORROSION BEHAVIOR OF 316L STAINLESS STEEL USING Sm.T

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Acta m.tallurgica Sinica(English Letters) 2006年第3期19卷 183-189页

作者： A.Q. Lü y. Zhang y. Li G. Liu Q.H. Zang C.m. Liu School of m.terials and m.tallurgy Northeastern University Shenyang 110004 China Jiuquan Iron ＆ Steel （Group） Go. Ltd Jiayuguan 735100 China State Key.Laboratory.for Corrosion and Protection of m.tals Institute of Metal Research The Chinese Academy of Sciences Shenyang 110015 China Shenyang National Laboratory.for m.terials Science Institute of Metal Research The Chinese Academy of Science Shenyang 110016 China

By.m.ans of surface m.chanical attrition treatm.nt （ Sm.T）, the groin size with a diam.ter of aboat 60hm.form.d at about 20μm.depth and num.rous m.chanical twins at about 50μm. depth from.the treated surface were sy.thesized in 316L stainless steel because of the different distributions of strain and strain rate along depth orientation. For instance the m.xim.m.strain rate reached 10^3-10^4s^-1 on the top surface. The relationship between the m.crosturcture and the corrosion property.was studied in 0.05m.H2SO4＋ 0.25m.Na2SO4 aqueous solution, and the results show an extrem. im.rovem.nt of corrosion resistance owing to the appearance of twin boundaries and the obvious reduction in corrosion resistance attributed to the presence of nanocry.taline boundaries.

关键词： surface m.chanical attrition treatm.nt 316L stainless steel corrosion property twin boundary nanocry.taline boundary