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tEsts ON stRUCtURALLY DEFICIENt RC sLABs stRENGtHENED WItH FIBRE REINFORCED POLYMER (FRP) COMPOs.t.s

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工业建筑 2004年第Z1期34卷 -页

作者： s.t. smith Centre for Built Infrastructure Research Faculty of Engineering Univers.t. of technology Sydney PO Box 123 Broadway NSW 2007 Australia

［1］Arduini, M., Nanni, A. and Romagnolo, M. (2004) "Performance of one-way reinforced concrete slabs with externally bonded fiber-reinforced polymer strengthening", ACI structural Journal, Vol.101, No. 2, pp. 193-201.［2］As 1012 Methods of testing Concrete, standards Australia, sydney, Australia.［3］As1391 (1991)Methods for tensile testing of Metals, standards Australia, sydney, Australia.［4］As3600 (2001) Concrete structures, standards Australia, sydney, Australia.［5］As/NZs4671 (2001) steel Reinforcing Materials, standards Australia, sydney, Australia.［6］Lam, L. and teng, J.G. (2001) “strength of RC cantilever slabs bonded with GFRP strips”,Journal of Compos.t.s for Construction, AsCE, Vol. 5, No. 4, pp. 221-227.［7］seim, W., Horman, M. Karbhari, V. and seible, F. (2001) “External FRP poststrengthening of scaled concrete slabs”, Journal of Compos.t.s for Construction, AsCE, Vol. 5, No. 2, pp. 67-75.［8］smith, s.t. and Gilbert, R.I. (2003) “tests on RC slabs reinforced with 500 MPa welded wire fabric”, Proceedings (CD-ROM), Concrete in the 3rd Millennium, CIA 2003, 21st Biennial Conference, Concrete Institute of Australia (CIA), Brisbane, Australia, 17-19 July.［9］teng, J.G., Lam, L, Chan, W. and Wang, J. (2000) “Retrofitting of deficient RC cantilever slabs using GFRP strips”, Journal of Compos.t.s for Construction, AsCE, Vol. 4, No. 2, pp. 75-84.［10］teng, J.G., Chen, J.F., smith, s.t. and Lam, L. (2002) FRP-strengthened RC structures, John Wiley & sons, Chichester, West sussex, U.K., 245 pp.［11］teng, J.G., smith, s.t., Yao, J. and Chen, J.F. (2003) “Intermediate crack induced debonding in RC beams and slabs”, Construction and Building Materials, Vol. 17, No. 6-7, pp.

关键词： steel reinforcement reinforced concrete reinforced polymer

Evaluation of red soil-bentonite mixtures for compacted clay liners

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第2期16卷 697-710页

作者： A.s.Devapriya t.thyagaraj Department of Civil Engineering Indian Institute of Technology MadrasChennai600036India

Compacted clay liners are an integral part of the waste landfills,which are provided to contain the leachate within the landfills and protect the surrounding ***,locally available natural soils are used for the construction of compacted clay liners if they s.t.sfy the design ***,not all soils in their natural state s.t.sfy all the design criteria for the liner ***,there is a definite need to modify the locally available natural soils by blending with bentonite to meet the required design criteria for the *** view of this.t.e present study evaluates.t.e suitability of an Indian red soil enhanced with bentonite as a liner *** achieve this,a series of experiments were carried out using locally available red soil and ***,the suitability of the red soil was evaluated as a liner *** experimental results showed that the red soil met all the selection criteria stipulated by the Environmental Protection Agencies(EPAs)for the liners except the hydraulic conductivity ***,the red soil was mixed with bentonite contents of 10%,20%and 30%,and the red soil-bentonite mixtures were evaluated for their suitability for liners in their compacted ***,as.t.e liners in the arid and semi-arid regions are subjected to moisture variations due to seasonal moisture fluctuations and other factors.t.e red soil-bentonite mixtures were subjected to wetdry cycles,and their suitability was evaluated after wet-dry *** experimental results revealed that all the red soil-bentonite mixtures met the stipulated EPA criteria for the liners in the as-compacted ***,the red soil-bentonite mixtures with 20%and 30%bentonite contents only s.t.sfied the hydraulic conductivity requirement even after wet-dry *** experimental findings were supplemented with the microstructural insights captured through digital camera images,scanning electron microscopy(sEM),and mercury intrusion porosimetry(M

关键词： Compacted clay lines Hydraulic conductivity Wet-dry cycles Microstructure

Physics of porous materials under extreme laser-generated conditions

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Matter and Radiation at Extremes 2024年第3期9卷 1-3页

作者： V.t.tikhonchuk s.Weber Extreme Light Infrastructure ERIC ELI Beamlines Facility25241 DolníBrezanyCzech Republic CELIA University of Bordeaux33405 TalenceFrance

Porous materials offer unique possibilities for the production of plasmas with controlled dens.t. profiles for experiments on laser–matter *** are of growing relevance to many applications,such as inertial confinement fusion,fundamental research,and secondary *** the processes of transformation of a porous solid into a plasma is of fundamental interest and is needed for producing materials with desired properties.

关键词： interaction. properties. porous

Facile synthesis of intra-nanogap enhanced Raman tags with different shapes

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Nano Research 2024年第9期17卷 8415-8423页

作者： sanjun Fan Brian t.scarpitti Zhewen Luo Abigail E.smith Jian Ye Zachary D.schultz Department of Chemistry and Biochemistry The Ohio State UniversityColumbusOhio 43210USA school of Biomedical Engineering Shanghai Jiao Tong UniversityShanghai 200030China

Hot spot engineering in plasmonic nanostructures plays a significant role in surface-enhanced Raman scattering(sERs)for bioanalysis and cell ***,creating stable,reproducible,and strong sERs signals remains challenging due to the potential interference from surrounding chemicals and locating sERs-active analytes into hot-spot ***,we developed a straightforward approach to synthesize intra-gap nanoparticles encapsulating 4-nitrobenzenethiol(4-NBt)as a reporter molecule within these gaps.t. avoid outside *** made three kinds of intra-gap nanoparticles using nanorods,bipyramids,and nanospheres as cores,in which the nanorods based intra-gap nanoparticles exhibit the highest sERs *** advantage of our method is.t.e ease of preparation of high-yield and stable intra-gap nanoparticles characterized by a short incubation time(10 min)with 4-NBt and quick synthesis without requiring an additional step to centrifuge for the purification of core *** intense localized field in the synthesized hot spots of these plasmonic gap nanostructures holds great promise as a sERs substrate for a broad range of quantitative optical applications.

关键词： hot spot engineering surface enhanced Raman scattering intra-gap nanoparticles 4-nitrobenzenethiol

tensor force impact on shell evolution in neutron-rich si and Ni is.t.pes

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Chinese Physics C 2024年第4期48卷 95-106页

作者： s.V.sidorov A.s.Kornilova t.Yu.tretyakova Faculty of Physics Lomonosov Moscow State UniversityMoscow 119991Russia skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State UniversityMoscow 119991Russia

the influence of the tensor interaction of nucleons on the characteristics of neutron-rich silicon and nickel is.t.pes was studied in this *** forces are considered within the framework of the Hartree-Fock approach with the skyrme *** addition of a tensor component of interaction is shown to improve the description of the splittings between different single-particle states and decrease nucleon-nucleon pairing correlations in silicon and nickel *** attention was directed toward the role of isovector tensor forces relevant to the interaction of like nucleons.

关键词： nuclear shell model tensor interaction silicon is.t.pes nickel is.t.pes

Harnessing endothelial cells and vascularization strategies for nerve regeneration

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Neural Regeneration Research 2024年第11期19卷 2337-2338页

作者： Papon Muangsanit Poppy smith Virology and Cell technology Research team National Center for Genetic Engineering and Biotechnology(BIOTEC)National Science and Technology Development Agency(NSTDA)PathumthaniThailand UCL Centre for Nerve Engineering UCLLondonUK Department of Pharmacology UCL School of PharmacyUCLLondonUK

Peripheral nerves are essential components of the human body’s communication system,transmitting signals between the central nervous system and various body *** resulting from trauma or disease can result in debilitating sensory and motor *** injuries,particularly those resulting in significant gaps in the nerve tissue,pose a formidable challenge for clinicians and *** their limitations,including limited availability and donor s.t. morbidity,nerve autografts remain the clinical gold standard for treating nerve injuries.

关键词： injuries nerves donor

Mathematical modelling of ball and plate system with experimental and correlation function-based model validation

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Control theory and technology 2024年第2期22卷 326-341页

作者： t.R.Dil Kumar s.J.Mija Department of Electrical Engineering National Institute of Technology CalicutKozhikode673601KeralaIndia

the ball and plate system is an inherently nonlinear under actuated benchmark system used for validating the performance of various control schemes. A mathematical model depicting the dynamics close to that of the system is very much required for such a test bed. In this correspondence, the complete nonlinear model, a simplified nonlinear model, and a linearized model of the ball and plate system are developed. the system comprises a ball and plate mechanism and a rotary servo unit. the ball and plate mechanism is modelled using the Euler–Lagrange method, whereas.t.e rotary servo subsystem is modelled from the first principles. the nonlinear model of the combined system is developed by including the dynamics of the servo motor with gear and rolling resistance between the ball and the plate. the simplified nonlinear model of the system is obtained with suitable assumptions. the model is linearized around the operating point using the Jacobian. the validity of the developed models is investigated through correlation function analysis. the open-loop response of the three models, viz., nonlinear, simplified nonlinear, and linearized models, is analyzed in the MAtLAB/simulink platform. since the open-loop system is unstable, the experimental validation of the model is performed with a double-loop PsO (particle swarm optimization) PID control scheme.

关键词： Ball and plate system Correlation function Model validation Particle swarm optimization(PsO) PsO PID controller

Grazing Pressure and Plant Functional types in Puna Highlands,Northwestern Argentina

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Phyton-International Journal of Experimental Botany 2024年第5期93卷 1067-1080页

作者： Quiroga Mendiola Mariana tálamo Andrés IPAF NOA—INtA(National Institute for Agricultural technology) Posta de HornillosJujuy4622Argentina Facultad de Ciencias Naturales Universidad Nacional de SaltaSalta4400Argentina Instituto de Bio y Geociencias del NOA(IBIGEO) UNSa-CONICET.Laboratorio de Ecología Aplicada a la Conservación(LEAC)Facultad de Ciencias NaturalesUniversidad Nacional de SaltaSalta4400Argentina Maestría en Gestión Ambiental Escuela de NegociosUniversidad Católica de Salta(UCASAL)Salta4400Argentina

the Puna grasslands support grazing systems.t.at produce meat and wool in multi-species herds,especially from llama(Lama glama)and ***,it is yet unknown whether grazing pressure can modify grassland structure and Plant Functional types divers.t. and cover in Puna *** analyzed the relationship between grazing pressure and Plant Functional types by comparing transects located near stockyards(high grazing pressure)and far from them(low pressure)and by evaluating the relationship between the Plant Functional types cover to a Grazing Pressure Index(GPI).this index incorporates.t.e heterogeneity of traditional pastoral *** two ecological s.t.s(Ciénego and tolar),we sampled paired transects(near-far).Plots near and far from corrals were similar in all the variables measured except for plots in tolar,which tend to have higher total cover,possibly due to fecal fertilization near ***,we recorded an increase in total cover and grass cover at higher GPI in Ciénego,while in tolar we found lower values of total cover and herbaceous dicotyledonous cover at intermediate intens.t.es of *** only negative relationship found was.t.e cover of clonal and non-clonal shrubs,possibly explained by the greater use of these shrubs as firewood near *** summary,our study does not show important changes in Plant Functional types as a function of grazing pressure in the studied grasslands probably because grazing pressure is diluted or diminished when livestock rotates in different areas and grazing durations ***,the long grazing history with which the Puna has evolved could also contribute to the co-structuration between native vegetation and livestock farming.

关键词： Natural grasslands Puna herbivory ecological perturbation

QCD sum rule study of J^(P)=1^(±)exotic states with two heavy quarks in the molecular picture

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Chinese Physics C 2024年第6期48卷 31-37页

作者： t.M.Aliev s.Bilmis M.savcı Department of Physics Middle East Technical UniversityAnkara06800Turkey tUBItAK ULAKBIM Ankara06510Turkey

In this study,the spectroscopic parameters of exotic molecular states composed of mesons containing two heavy quarks(scalar-axial and pseudoscalar-axial meson combinations)are investigated within the QCD sum *** findings reveal that molecular states containing charm quarks do not form bound states,whereas states with b-quarks can form exotic molecular *** observation has significant implications for understanding the structure of these exotic states.

关键词： QCD sum rules exotic mesons molecular states