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Seismic assessment of unanchored steel storage tanks by endurance time method

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earthquake engineering and engineering Vibration 2011年第4期10卷 591-603页

作者： m. Alembagheri H.e. estekanchi Department of Civil engineering Sharif University of Technology (SUT)

Liquid storage tanks are essential structures that are often located in residential and industrial areas; thus an assessment of their seismic performance is an important engineering issue. In this paper, the seismic response ofunanchored steel liquid storage tanks is investigated using the endurance time （eT） dynamic analysis procedure and compared to responses obtained for anchored tanks under actual ground motions and intensifying eT records. In most cases, the results from ground motions are properly obtained with negligible differences using eT records. It is observed that uplifting of the tank base, which is closely related to the tank aspect ratio, has the greatest significance in the responses of the tank and can be predicted with reasonable accuracy by using currently available eT records.

关键词： steel liquid storage tanks endurance time method seismic assessment intensifying dynamic excitation tank base uplifting

Sintering behaviour of feldspar and influence of electric charge effects

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International Journal of minerals,metallurgy and materials 2011年第2期18卷 132-137页

作者： W.Gallala m.e.Gaied earth Sciences Department Faculty of Sciences GabesCité RiadhZirig

The characterization of feldspar for electric porcelain and the behaviour of these materials after heating at 1230°C were studied. X-ray diffraction （XRD） and scanning electronic microscopy （Sem） were used to identify the present phases and the densification level. Feldspar sand was treated by flotation. The floated feldspar is constituted by microcline, quartz, and minor amounts of albite. The micro-structure of sintered feldspar at 1230°C is essentially vitreous with open microporosities. The dielectrical properties of composites were characterized by using the induced courant method （ICm）, which indicates that the charge trapping capacity depends on the mineralogical and chemical composition of feldspar.

关键词： potash ore treatment feldspar sintering microstructure dielectric properties

modelling, parameter estimation and assessment of partial shading conditions of photovoltaic modules

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Journal of modern Power Systems and Clean energy 2019年第1期7卷 55-64页

作者： S.LYDeN m.e.HAQUe School of engineering University of Tasmania School of engineering Deakin University

This paper proposes a method for assessing the effect that different features of partial shading conditions(PSC) may have on the operation of a photovoltaic(PV)*** studies, based on an experimentally validated model of a PV system, are used to assess the influence of *** classifications of PSC are defined based on the timescale of their influence on the irradiance experienced by the PV module and the relative location of the voltage at which the global maximum power point occurs is *** case studies are presented to illustrate the application of the proposed PSC assessment *** results have implications for the design of future maximum power point tracking methods.

关键词： Photovoltaic modelling Partial shading maximum power point

Landau damping in a dipolar Bose–Fermi mixture in the Bose–einstein condensation(BeC) limit

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Chinese Physics B 2016年第12期25卷 367-376页

作者： S m moniri H Yavari e Darsheshdar Department of Physics University of Isfahan

By using a mean-field approximation which describes the coupled oscillations of condensate and noncondensate atoms in the collisionless regime, Landau damping in a dilute dipolar Bose-Fermi mixture in the BeC limit where Fermi superfluid is treated as tightly bounded molecules, is investigated. In the case of a uniform quasi-two-dimensional （2D） case, the results for the Landau damping due to the Bose-Fermi interaction are obtained at low and high temperatures. It is shown that at low temperatures, the Landau damping rate is exponentially suppressed. By increasing the strength of dipolar interaction, and the energy of boson quasiparticles, Landau damping is suppressed over a broader temperature range.

关键词： Landau damping mixtures of Bose and Fermi superfluids dipole-dipole interaction

effect of weak measurement on quantum correlations

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Chinese Physics B 2020年第11期29卷 174-181页

作者： L Jebli m Amzioug S e ennadifi N Habiballah m Nassik ePTHe Department of PhysicsFaculty of SciencesIbn Zohr UniversityAgadirMorocco Faculty of Applied Sciences Ibn Zohr UniversityAit-MelloulMorocco Abdus Salam International Center for Theoretical Physics Strada Costiera11 I-34151TriesteItaly LHeP-mS Department of PhysicsFaculty of Science Mohammed V UniversityRabatMorocco Department of Physics Ecole Normale Sup´eieure(ENS)Mohammed V UniversityRabatMorocco

We investigate the local quantum uncertainty(LQU)in weak *** expression of weak LQU is explicitly ***,we consider some cases of three special X states,Werner state,circulant two-qubit states,and Heisenberg model via L... 详细信息

关键词： local quantum uncertainty weak measurement weak local quantum uncertainty

Bulk etch rates of CR-39 at high etchant concentrations:diffusionlimited etching

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Nuclear Science and Techniques 2020年第12期31卷 41-49页

作者： e.m.Awad m.A.Rana mushtaq Abed Al-Jubbori Physics Department Faculty of ScienceMenoufia UniversityShebin El-KoomMenoufia 32511Egypt meRADD Instrumentation Control and Computer Complex(ICCC)PARAS Building18-KM Multan RoadP.O.ChungLahorePakistan Department of Physics College of Education for Pure SciencesUniversity of MosulMosul 41001Iraq

Systematic CR-39 bulk etching experiments were conducted over a wide range of concentrations(2–30 N)of NaOH-based *** analysis and a deep discussion of the results are presented.A comprehensive nuclear track chemical etching data bank was *** regimes of CR-39 bulk etching were *** I spans etchant concentrations from 2 to 12 *** II spans concentrations from 12 to 25 *** call this the dynamic bulk etching *** III is for concentrations greater than 25 *** this regime,the bulk etch rate is saturated with respect to the etchant *** classification is discussed and *** role of ethanol in NaOH-based etchants is explored and discussed.A parameter called the “reduced bulk etch rate” is defined here,which helps in analyzing the dependence of bulk etching on the amount of ethanol in the *** bulk etch rate shows a natural logarithmic dependence on the density of ethanol in the etchant.

关键词： CR-39 detector ethanol Bulk etch rate Reduced bulk etch rate Diffusion-limited etching Concentration-limited etching

exact Solutions of Kolmogorov-Petrovskii-Piskunov equation Using the modified Simple equation method

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Acta mathematicae Applicatae Sinica 2014年第3期30卷 749-754页

作者： e.m.e.Zayed S.A.Hoda Ibrahim mathematics Department Faculty of ScienceZagazig University

The modified simple equation method is employed to find the exact solutions of the nonlinear Kolmogorov-Petrovskii-Piskunov （KPP） equation. When certain parameters of the equations are chosen to be special values, the solitary wave solutions are derived from the exact solutions. It is shown that the modified simple equation method provides an effective and powerful mathematical tool for solving nonlinear evolution equations in mathematical physics.

关键词： modified simple equation method Kolmogorov-Petrovskii-Piskunov equation exact solutions solitary wave solutions

Fabrication of Biomimetic Transparent and Flexible Pectin/PeG Composite Film for Temperature Sensing Applications

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Journal of Bionic engineering 2023年第1期20卷 47-56页

作者： m.e.Harikumar Sudip K.Batabyal Department of electronics and Communication engineering Amrita School of EngineeringAmrita Vishwa VidyapeethamCoimbatore641112India Department of Science Amrita School of Physical SciencesAmrita Vishwa VidyapeethamCoimbatore641112India Amrita Center for Industrial Research&Innovation(ACIRI) Amrita School of EngineeringAmrita Vishwa VidyapeethamCoimbatore641112India

In the field of robotics to enhance the interaction with humans in real-time and in the bioengineering field to develop prosthetic devices, the need for artificial skin is in high demand. In this work, the hydrogen-bonded complex network structure of the Pectin/PeG composite has been designed, resulting in the free-standing film functioning as a temperature-sensing device. With the gelation technique and the addition of PeG, the film’s flexibility and conductivity were enhanced. The fabricated device worked at a low voltage of 1 V supply with high throughput. With different dimensions, three devices were fabricated, and the maximum-induced ionic current was 34 µA ± 5%. The device has an average sensitivity of 1.3–2.7 µA/°C over the range of 30 °C to 42 °C. The device's fastest response time to sense the temperature change was 2 s ± 5%. The present device exhibits good stability for a long duration of time. These pectin/PeG films can be used as biomimetic skin to improve the efficiency in sensing the temperature.

关键词： Pectin film Temperature sensor Ionic current.Thermo-reversible Thin-film NTC

Generalized and Improved(G′/G)-expansion method Combined with Jacobi elliptic equation

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Communications in Theoretical Physics 2014年第6期61卷 669-676页

作者： m.Ali Akbar Norhashidah Hj.mohd.Ali e.m.e.Zayed School of mathematical Sciences Universiti Sains Malaysia Department of Applied mathematics University of Rajshahi mathematics Department Faculty of Science Zagazig University

In this article, we propose an alternative approach of the generalized and improved （G＇/G）-expansion method and build some new exact traveling wave solutions of three nonlinear evolution equations, namely the Boiti- Leon-Pempinelle equation, the Pochhammer-Chree equations and the Painleve integrable Burgers equation with free parameters. When the free parameters receive particular values, solitary wave solutions are constructed from the traveling waves. We use the Jacob/elliptic equation as an auxiliary equation in place of the second order linear equation. It is established that the proposed algorithm offers a further influential mathematical tool for constructing exact solutions of nonlinear evolution equations.

关键词： Boiti-Leon-Pempinelle equation Painleve integrable burgers equation Pochhammer-Chree equa-tion (GI/G)-expansion method traveling wave solutions