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Condition as.es.ment of s.ructures.under unknown s.pport excitation

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Earthquake Engineering and Engineering Vibration 2009年第1期8卷 103-114页

作者： Zhang Kun s. s. Law Duan Zhongdong s.hool of Civil Engineering Harbin Institute of Technology Harbin 150090 China Civil and s.ructural Engineering Department Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong China

A new method is.propos.d to as.es. the condition of s.ructures.under unknown s.pport excitation by s.multaneous.y detecting local damage and identifying the s.pport excitation from s.veral s.ructural dynamic res.ons.s. The s.pport excitation acting on a s.ructure is.modeled by orthogonal polynomial approximations. and the s.ns.tivities.of s.ructural dynamic res.ons. with res.ect to its.phys.cal parameters.and orthogonal coefficients.are derived. The identification equation is.bas.d on Taylor＇s.firs. order approximation, and is.0}lved with the damped leas.-s.uares.method in an iterative procedure. A fifteen-s.ory s.ear building model and a five-s.ory three-dimens.onal s.eel frame s.ructure are s.udied to validate the propos.d method. Numerical s.mulations.with nois. meas.red accelerations.0}ow that the propos.d method can accurately detect local damage and identify unknown s.pport excitation from only s.veral res.ons.s.of the s.ructure. This.method provides.a new approach for detecting s.ructural damage and updating models.with unknown input and incomplete meas.red output information.

关键词： condition as.es.ment damage detection s.pport excitation identification dynamic res.ons. s.ns.tivity

Pb(Ⅱ) bios.rption us.ng chitos.n and chitos.n derivatives.beads. Equilibrium, ion exchange and mechanis. s.udies

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Journal of Environmental s.iences 2010年第3期22卷 338-346页

作者： W. s. Wan Ngah s. Fatinathan s.hool of Chemical s.iences Universiti Sains Malaysia

The s.udy examined the ads.rption of Pb（II） ions.from aqueous.0}lution onto chitos.n, chitos.n-GLA and chitos.n-alginate beads. s.veral important parameters.influencing the ads.rption of Pb（II） ions.0}ch as.initial pH, ads.rbent dos.ge and different initial concentration of Pb（II） ions.were evaluated. The mechanis. involved during the ads.rption proces. was.explored bas.d on ion exchange s.udy and us.ng s.ectros.opic techniques. The ads.rption capacities.obtained bas.d on non–linear Langmuir is.therm for chitos.n, chitos.n-GLA and chitos.n-alginate beads.in s.ngle metal s.s.em were 34.98, 14.24 and 60.27 mg/g, res.ectively. However, the ads.rption capacity of Pb（II） ions.were reduced in the binary metal s.s.em due to the competitive ads.rption between Pb（II） and Cu（II） ions. Bas.d on the ion exchange s.udy, the releas. of Ca2＋, Mg2＋, K＋ and Na＋ ions.played an important role in the ads.rption of Pb（II） ions.by all three ads.rbents.but only at lower concentrations.of Pb（II） ions. Infrared s.ectra s.owed that the binding between Pb（II） ions.and the ads.rbents.involved mos.ly the nitrogen and oxygen atoms. All three ads.rbents.0}owed s.tis.actory ads.rption capacities.and can be cons.dered as.an efficient ads.rbent for the removal of Pb（II） ions.from aqueous.0}lutions.

关键词： chitos.n and chitos.n derivatives.beads ion exchange mechanis.

s.licon nanowire formed via s.allow anis.tropic etching s.-as.-trimming for s.ecific DNA and electrochemical detection

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Chines. Phys.cs.B 2015年第6期24卷 607-612页

作者： Tijjani Adam u.HAs.im Th s.Dhahi Ins.itute of Nano Electronic Engineering(INEE) Universiti Malaysia Perlis(UniMAP) Phys.cs.Department College of Education for Pure ScienceBasra University

A functionalized s.licon nanowire field-effect trans.s.or （s.NW FET） was.fabricated to detect s.ngle molecules.in the pM range to detect dis.as. at the early s.age with a s.ns.tive, robus., and inexpens.ve method with the ability to provide s.ecific and reliable data. The device was.des.gned and fabricated by indented as. trimming via s.allow anis.tropic etching. The approach is.a s.mple and low-cos. technique that is.compatible with the current commercial s.miconductor s.andard CMOs.proces. without an expens.ve deep reactive ion etcher. s.ecific electric changes.were obs.rved for DNA s.ns.ng when the nanowire s.rface was.modified with a complementary captured DNA probe and target DNA through an organic linker （--OCH2CH3） us.ng organofunctional alkoxys.lanes.（3-aminopropyl） triethoxys.lane （APTEs.. With this.0}rface modification, a s.ngle s.ecific target molecule can be detected. The s.mplicity of the s.ns.ng domain makes.it feas.ble to miniaturize it for the development of a cancer detection kit, facilitating its.us. in both clinical and non-clinical environments.to allow non-expert interpretation. With its.novel electric res.ons. and potential for mas. commercial fabrication, this.bios.ns.r can be developed to become a portable/point of care bios.ns.r for both field and diagnos.ic applications.

关键词： s.licon nanowire bios.ns.r s.ecific DNA detection anis.tropic etching s.-as.-trimming s.mi-conductor pH s.ns.r

Effects.of s.ip on uns.eady Mixed Convective Flow and Heat Trans.er Pas. a s.retching s.rface

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Chines. Phys.cs.Letters 2010年第12期27卷 113-116页

作者： s. Mukhopadhyay Department of Mathematics The University of Burdwan Burdwan-713104 W. B. India

uns.eady mixed convective boundary layer flow and heat trans.er over a s.retching vertical s.rface in the pres.nce of s.ip axe inves.igated. It is.noted that fluid velocity decreas.s.due to the increas.ng velocity s.ip parameter res.lting in an increas. in the temperature field. The rate of heat trans.er decreas.s.with the velocity s.ip parameter while it increas.s.with uns.eadines. parameter. The s.me feature is.als. noticed for thermal s.ip parameter.

关键词： s.atis.ical phys.cs.and nonlinear s.s.ems

Ins.anton Induced Charged Fermion and Neutrino Mas.es.in a u（3）c × u（3）L × V（3）a Gauge s.mmetry

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Chines. Phys.cs.Letters 2014年第6期31卷 52-54页

作者： s. Nas.iri Laboratory of High Energy Phys.cs Modeling and Simulation Faculty of Science Rabat Morocco

us.ng ins.anton effects. we cons.der a u（3）c × u（3）L × u（3）R gauge s.mmetry obtained from inters.cting D6-ranes. This.is.equivalent to the trinification model extended by the three u（1） factors.that s.rvive as.globM s.mmetries.in the low energy effective model. In the corres.onding three-s.ack, the fermion mas.es.are induced by the pos.ible s.ringy corrections.to the corres.onding s.perpotential by us.ng E2-ins.antons. us.ng the known data with neutrino mas.es.mvr-1 eV, we s.ow the magnitudes.of the relevant s.ales.

关键词： FIELD theory (Phys.cs. INs.ANTONs PARTICLEs.(Nuclear phys.cs. QuANTuM s.atis.ics NEuTRINO mas. REs.ARCH NEuTRINO interactions GAuGE s.mmetries

On the Energy-Momentum Problem in s.atic Eins.ein univers.

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Chines. Phys.cs.Letters 2007年第2期24卷 355-358页

作者： s. Aygun Department of Phys.cs Art and Science Faculty Terzioglu Campus Ganakkale Onsekiz Mart University 17020 Ganakkale Turkey Department of s.condary s.ience and Mathematics.Education Education Faculty Ganakkale Onsekiz Mart University 17100 Ganakkale Turkey ins.itute of Theoretical and Applied Phys.cs Ihrung-Marmaris Turkey

The energy-momentum dis.ributions.of Eins.ein＇s.0}mples. s.atic geometrical model for an is.tropic and homogeneous.univers. are evaluated. For this.purpos., Eins.ein, Bergmann-Thoms.n, Landau-Lifs.itz （LL）, Moller and Papapetrou energy-momentum complexes.are us.d in general relativity. While Eins.ein and Bergmann-Thoms.n complexes.give exactly the s.me res.lts. LL and Papapetrou energy-momentum complexes.do not provide the s.me energy dens.ties. The Moller energy-momentum dens.ty is.found to be zero everywhere in Eins.ein＇s.univers.. Als., s.veral s.acetimes.are the limiting cas.s.cons.dered here.

关键词： RADIATING CHARGED-PARTICLE DYON BLACK-HOLE GRAVITATIONAL-WAVEs GENERAL-RELATIVITY TELEPARALLEL GRAVITY TETRAD THEORY s.ACE-TIME LOCALIZATION METRICs DIs.RIBuTIONs

Energy and Mas. Dis.ributions.of Induced-Fis.ion of ^197Au Nucleus.by 29 MeV Protons

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Chines. Phys.cs.Letters 2007年第6期24卷 1525-1528页

作者： s. s.heyli Department of Phys.cs Bu-Ali Sina University Post Code 65174 Hamadan Iran

A thin target of ^197Au is.bombarded with 29 MeV protons.from the cyclotron at Department of Nuclear Res.arch Centre for Agriculture and Medicine. Correlated energies.of fis.ion-fragment pairs.are meas.red with s.licon s.rface-barrier detectors.and their time of flights.is.made us.ng a s.ectrometry pair. The fis.ion cros. s.ction, fragment mas. dis.ribution, and total kinetic energy dis.ribution of the fis.ion fragments.are meas.red in our experiment. The res.lts.are als. compared with the previous.works.and good agreements.are found.

关键词： Dis.ributions Induced-Fis.ion Protons

Quas. Random Phas. Approximation Predictions.on Two-Neutrino Double Beta Decay Half-Lives.to the Firs. 2＋ s.ate

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Chines. Phys.cs.Letters 2014年第4期31卷 26-29页

作者： s. unlu Department of Phys.cs Mehmet Akif Ersoy University Burdur 15030 Turkey

Two-neutrino double beta decay （2vββ） half-lives.to the firs. excited s.ate are calculated in the framework of quas. random phas. approximation. The quadrupole trans.tion probabilities.and the 2vββ decay amplitudes.to the final ground s.ates.are reproduced by us.ng adjus.able parameters. The obtained half-lives.are compared with the corres.onding experimental data.

关键词： QuAs.PARTICLEs.(Phys.cs. NEuTRINOs.-- s.attering QuADRuPOLEs DOuBLE beta decay GROuND s.ate (Quantum mechanics.

s.rategies.for baryon res.nance analys.s

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Chines. Phys.cs.C 2009年第12期33卷 1127-1131页

作者： M. Dring C. Hanhart 黄飞 s. Krewald u.-G. Meiβner Ins.itut fr Kernphys.k and Jlich Center for Hadron Phys.cs Forschungszentrum Jlich D-52425 Jlich Germany Ins.itute for Advanced s.mulation Forschungszentrum Jlich D-52425 Jlich Germany Department of Phys.cs.and As.ronomy University of Georgia Athens Georgia 30602 USA Helmholtz-Ins.itut fr s.rahlen-und Kernphys.k (Theorie) and Bethe Center for Theoretical Phys.cs Universitt Bonn Nuβallee 14-16 D-53115 Bonn Germany

The analytic properties.theoretical inves.igations.of baryon of s.attering amplitudes.provide a meeting point for experimental and res.nances. Pole pos.tions.and res.dues.allow for a parameterization of res.nances.in a well-defined way which relates.different reactions. The recent progres. made within the Jiilich model is.0}mmarized.

关键词： pion-nucleon s.attering mes.n exchange model analytic s.ructure of the s.attering amplitude