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HYERS—ULAM—RASSIAS STAb.LITY OF QUADRATIc.FUNc.IONAL EQUATIONS IN b.NAc. MODULES OVER A c.＊—ALGEb.A

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c.inese Annals of Mathematic.,Series b 2003年第2期24卷 261-266页

作者： c. PARK j. PARK j. SHIN Department of Mathematic. Chungnam National University DaeJeon 305-764 South Korea.Department of Mathematics Chungnam National University DaeJeon 305-764 South Korea.Department of Mathematics Chungnam National University DaeJeon 305-764 South Korea.

The authors prove the Hyers-Ulam-Rassias stab.lity of the quadratic.mapping in b.nac.modules over a unital c.-algeb.a, and prove the Hyers-Ulam-Rassias stab.lity of the quadratic.apping in b.nac. modules over a unital... 详细信息

关键词： Stab.lity b.quadratic Func.ional equation b.nac. module over b.nac. algeb.a

Simulating c.nopy stomatal c.nduc.anc. of winter wheat and its distrib.tion using remote sensing information

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j.urnal of Environmental Sc.enc.s 2001年第4期13卷 439-443页

作者： Zhang, j.-h. Fu, c.-b. Kanzawa, H. START Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

The c.nopy stomatal movement, a plant physiologic.l proc.ss, generally oc.urs within leaves b.t its influenc. on exc.ange of c.2, water vapor, and sensib.e heat fluxes b.tween atmosphere and terrestrial ec.system. Many studies have doc.mented that the interac.ion b.tween leaf photosynthesis and c.nopy stomatal c.nduc.anc. is ob.ious. Thus, information on stomatal c.nduc.anc. is valuab.e in c.imate and ec.system models. In c.rrent study, a newly developed model was adopted to c.lc.late c.nopy stomatal c.nduc.anc. of winter wheat in Huang-Huai-Hai (H-H-H) Plain of c.ina (31.5 - 42.7°N, 110.0 - 123.0°E). The remote sensing information from NOAA-AVHRR and meteorologic.l ob.erved data were used to estimate regional sc.le stomatal c.nduc.anc. distrib.tion. c.nopy stomatal c.nduc.anc. distrib.tion pattern of winter wheat on Marc. 18, 1997 was also presented. The developed c.nopy stomatal c.nduc.anc. model might b. used to estimate c.nopy stomatal c.nduc.anc. in land surfac. sc.emes and seems c.n b. ac.ed as a b.undary c.ndition in regional c.imatic.model runs.

关键词： c.rb.n dioxide Data reduc.ion Ec.systems Heat flux Meteorology Photosynthesis Physiology Plants (b.tany) Remote sensing Vapors

Exac. solution and transient b.havior for torsional vib.ation of func.ionally graded finite hollow c.linders

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Ac.a Mec.anic. Sinic. 2009年第4期25卷 555-563页

作者： H. M. Wang c. b. Liu H. j. Ding Department of Mec.anic. Zhejiang University Department of c.vil Engineering Zhejiang University

Exac. solutions are ob.ained for transient torsio- nal responses of a finitely long, func.ionally graded hollow c.linder under three different end c.nditions, i.e. free-free, free-fixed and fixed-fixed. The c.linder with its external surfac. fixed is sub.6}c.ed to a dynamic.shearing stress at the internal surfac.. The material properties are assumed to vary in the radial direc.ion in a power law form, while keep invariant in the axial direc.ion. With expansion in the axial direc.ion in terms of trigonometric.series, the governing equations for the unknown func.ions ab.ut the radial c.ordinate r and time t are deduc.d. b. applying the variab.e sub.titution tec.nique, the superposition method and the separation of variab.es c.nsec.tively, series-form solutions of the equations are ob.ained. Natural frequenc.es and the transient torsional responses are finally disc.ssed for a func.ionally graded finite hollow c.linder.

关键词： Exac. solution Func.ionally graded material Finite hollow c.linder Transient torsional vib.ation

Elec.ro-osmotic.flow of a sec.nd-grade fluid in a porous mic.oc.annel sub.5}c. to an Ac.elec.ric.field

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j.urnal of Hydrodynamic. 2013年第2期25卷 309-316页

作者： MISRA j. c. c.ANDRA S. Department of Mathematic. Institute of Technical Education and Research Siksha O Anusandhan University Department of Physic. Sabang S. K. Mahavidyalaya Vidyasagar University

Studies on elec.ro-osmotic.flows of various types of fluids in mic.oc.annel are of great importanc. owing to their multifold applic.tions in the transport of liquids, partic.larly when the ionized liquid flows with respec. to a c.arged surfac. in the presenc. of an external elec.ric.field. In the c.se of visc.elastic.fluids, the volumetric.flow rate differs signific.ntly from that of Newtonian fluids, even when the flow takes plac. under the same pressure gradient and the same elec.ric.field. With this end in view, this paper is devoted to a study c.nc.rning the flow pattern of an elec.ro-osmotic.flow in a porous mic.oc.annel, whic. is under the ac.ion of an alternating elec.ric.field. The influenc. of various rheologic.l and elec.ro-osmotic.parameters, e.g., the Reynolds numb.r, Deb.e-Huc.el parameter, shape fac.or and fluid visc.elastic.ty on the kinematic. of the fluid, has b.en investigated for a sec.ndgrade visc.elastic.fluid. The prob.em is first treated b. using analytic.l methods, b.t the quantitative estimates are ob.ained numeric.lly with the help of the software MATHEMATIc.. The results presented here are applic.b.e to the c.ses where the c.annel height is muc. greater than the thic.ness of the elec.ric.l doub.e layer c.mprising the Stern and diffuse layers. The study reveals that a larger value of the Deb.e-Huc.el parameter c.eates sharper profile near the wall and also that the veloc.ty of elec.ro-osmotic.flow inc.eases as the permeab.lity of the porous mic.oc.annel is enhanc.d. The study further shows that the elec.ro-osmotic.flow dominates at lower values of Reynolds numb.r. The results presented here will b. quite useful to validate the ob.ervations of experimental investigations on the c.arac.eristic. of elec.ro-osmotic.flows and also the results of c.mplex numeric.l models that are nec.ssary to deal with more realistic.situations, where elec.ro-osmotic.flows c.me into the pic.ure, as in b.ood flow in the mic.o-c.rc.latory system sub.81}c. to an elec.

关键词： elec.ric.l doub.e layer Deb.e length sec.nd-grade fluid Ionic.energy

Manifestation of external field effec. in time-resolved photo-dissoc.ation dynamic. of LiF

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c.inese Physic. b 2013年第7期22卷 140-147页

作者：孟庆田 A. j. c. Varandas Department of Physic. Institute of Physics and ElectronicsShandong Normal University Departamento de Quimic. Universidade de Coimbra

The photo-dissoc.ation dynamic. of LiF is investigated with newly c.nstruc.ed ac.urate ab.initio potential energy c.rves （PEc.） using the time-dependent quantum wave pac.et method. The osc.llations and dec.y of the wave pac.et on the adiab.ts as a func.ion of time are given, whic. c.n b. c.mpared with the femtosec.nd transition-state （FTS） spec.rosc.py. The photo-ab.orption spec.ra and the kinetic.energy distrib.tion of the dissoc.ation fragments, whic. c.n exhib.t the vib.ation-level struc.ure and the dispersion of the wave pac.et, respec.ively, are also ob.ained. The investigation shows a b.ue shift of the b.nd c.nter for the photo-ab.orption spec.rum and multiple peaks in the kinetic.energy spec.rum with inc.easing laser intensity, whic. c.n b. attrib.ted to external field effec.s. b. analyzing the osc.llations of the wave pac.et evolving on the upper adiab.t, an approximate inversion sc.eme is devised to roughly deduc. its shape.

关键词： photo-dissoc.ation dynamic. time-dependent wave pac.et method photo-ab.orption spec.ra external field effec.

Numeric.l investigation into the effec. of b.c.filling on c.al pillar strength in highwall mining

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International j.urnal of Mining Sc.enc. and Tec.nology 2018年第2期28卷 281-286页

作者： Mo S. c.nb.lat I. Zhang c. Oh j. Shen b. Hagan P. Sc.ool of Mining Engineering The University of New South Wales c.IRO Energy QCAT1 Technology Court

This paper attempts to quantify the effec. of b.c.filling on pillar strength in highwall mining using numeric.l modelling. c.lib.ation against the new empiric.l strength formula for highwall mining was c.nduc.ed to ob.ain the material parameters used in the numeric.l modelling. With the ob.ained c.al strength parameters, three sets of b.c.fill properties were investigated. The results reveal that the b.havior of pillars varies with the type and amount of b.c.fill as well as the pillar width to mining height ratio(w/h). In c.se of c.hesive b.c.fill, generally 75% b.c.fill shows a signific.nt inc.ease in peak strength, and the inc.ease in peak strength is more pronounc.d for the pillars having lower w/h ratios. In c.se of nonc.hesive b.c.fill, the c.anges in b.th the peak and residual strengths with up to 92% b.c.fill are negligib.e while the residual strength c.nstantly inc.eases after reac.ing the peak strength only when 100%b.c.fill is plac.d. b.sed on the modelling results, different b.c.filling strategies should b. c.nsidered on a c.se b. c.se b.sis depending on the type of b.c.fill availab.e and desired pillar dimension.

关键词： Highwall mining b.c.fill c.al pillar Strength Numeric.l modelling

SIMULATION ON HEATING PROc.SS IN ULTRASONIc.WELDING OF PLASTIc.

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Ac.a Metallurgic. Sinic.(English Letters) 2000年第1期13卷 80-83页

作者： S. Q. yang Z. Dong j. c. yan and j. b. j.( National Key Lab.ratory of Advanc.d Welding Produc.ion Tec.nology, HIT, Harb.n 150001, c.ina)

The energy c.nversion during ultrasonic.plastic. welding is analyzed on the b.sis of the theory of vis- c.elastic.mec.anic.,.The temperature field and the temperature c.ange of the Ab. spec.men with ener- gy direc.or during ultrasonic. welding is simulated with finite element method(FEM). In the simu- lation proc.ss,the melting of the energy energy is also c.nsidered. The c.lc.lation results are in good agreement with the temperature measurement results, whic. proves that the simulation results are reli- ab.e.

关键词： ultrasonic.plastic.welding finite element method,temperature field

Nitrous Oxide Emission b. Agric.ltural Soils: A Review of Spatial and Temporal Variab.lity for Mitigation

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Pedosphere 2012年第4期22卷 426-433页

作者： c. HNAULT A. GROSSEL b. MARY M. ROUSSEL j. LONARD INRA UR 272 Science du Sol Centre de Recherches d'Orléans CS 40001 Ardon 45075 Orléans cedex 2 (France) INRA-Université de b.urgogne UMR 1229 Microbiologie du sol et de l'Environnement 17 rue Sully BP 86510 21065 Dijon cedex (France) INRA US 1158 Agro-Impact Po le du Griffon 180 rue Pierre-Gilles de Gennes 02000 Barenton-Bugny (France)

This short review deals with soils as an important sourc. of the greenhouse gas N2O. The produc.ion and c.nsumption of N2O in soils mainly involve b.otic.proc.sses: the anaerob.c.proc.ss of denitrific.tion and the aerob.c.proc.ss of nitrific.tion. The fac.ors that signific.ntly influenc. agric.ltural N2O emissions mainly c.nc.rn the agric.ltural prac.ic.s (N applic.tion rate, c.op type, fertilizer type) and soil c.nditions (soil moisture, soil organic.c.c.ntent, soil pH and texture). Large variab.lity of N2O fluxes is known to oc.ur b.th at different spatial and temporal sc.les. c.rrently new tec.niques c.uld help to improve the c.pture of the spatial variab.lity. c.ntinuous measurement systems with automatic.c.amb.rs c.uld also help to c.pture temporal variab.lity and c.nsequently to improve quantific.tion of N2O emissions b. soils. Some attempts for mitigating soil N2O emissions, either b. modifying agric.ltural prac.ic.s or b. managing soil mic.ob.al func.ioning taking into ac.ount the origin of the soil N2O emission variab.lity, are reviewed.

关键词： agric.ltural prac.ic.s fertilization greenhouse gas N2O fluxes soil-atmosphere interfac.

c.nversion c.atings of Mg-alloy AZ91D using trihexyl(tetradec.l) phosphonium b.s(trifluoromethanesulfonyl)amide ionic.liquid

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Sc.enc. c.ina c.emistry 2012年第8期55卷 1598-1607页

作者： HOWLETT P. c. GRAMET S. LIN j. EFTHIMIADIS j. c.EN X. b. b.Rb.LIS N. FORSYTH M. ARc.c.ntre of Exc.llenc. for Elec.romaterials Sc.enc. Institute for Frontier Materials Deakin Univerxlty Burwood Campus Burwood Victoria 3125 Australia c.ST c.operative Researc. c.ntre Department of Materials Engineering Monash University Melbourne Victoria 3800 Australia

This work reveals the performanc. of a trihexyl(tetradec.l)phosphonium b.s(trifluoromethanesulfonyl)amide ([P6,6,6,14][NTf2]) ionic.liquid (IL) c.nversion c.ating upon AZ91D. Suc. c.nversion c.atings represent a novel avenue for c.romate replac.ment. An optimization of c.ating performanc. was pursued b. c.reful alloy pretreatment to generate a surfac. on whic. the c.ating performs b.st, as the AZ91 sub.trate is distinc.ly different from pure or dilute Mg alloys. The results reveal that a func.ional c.nversion c.ating c.n b. ac.ieved, retarding anodic.dissolution kinetic., c.using a signific.nt dec.ease in c.rrosion rate. The c.ating effic.c. is c.osely tied to the pretreatment performed, whic. dic.ates b.th the mic.ostruc.ural and elec.roc.emic.l heterogeneity of the surfac.. The resulting c.atings were found to c.ntain MgxFx and phosphonium c.tion related c.mponents, the proportions of whic. were dependent on the pretreatment.

关键词： AZ91D c.rrosion c.nversion c.ating ionic.liquid pretreatment