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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

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

Studies on Immunological effect and Immunological Mechanism Avian encephalomyelitis Oil emulsion Inactivated Vaccine

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Agricultural Sciences in China 2002年第7期1卷 811-815页

作者： ri Mudema Animal Science and Medicine Institute Agriculture University of Inner Mongolia Huhhot 010018 P.R.China

Oil emulsion inactivated vaccine was prepared by susceptible embryos, with different strains of AeV. Four groups of normal chickens of 2 - 7 days of age were given injections for immunization, respectively. Another group was used as control. This study was expected to evaluate the immunological effect and discuss the immunological mechanism by means of five different experiments, i.e. the agar-gel precipitin test, the isolation of lymphokine, the isolation, purification and analysis of blood serum IgG, embryo-susceptibility test, and clinical and pathological examination. The results of these experiments indicated that oil emulsion inactivated vaccine is safe and effective. The chickens were normal when inoculated with Ae strong virus after immunity at 4 and 37 weeks. Immunological mechanism is that the humoral immunity played an important role and celluar immunity exists, but it is not important in the process of the resistance to AeV.

关键词： Chickens Avian encephalomyelitis Inactivated vaccine

Fundamental solutions for axi-symmetric translational motionof a microstretch fluid

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Acta Mechanica Sinica 2012年第3期28卷 605-611页

作者： h.h.Sherief M.S.Faltas e.A.Ashmawy Department of Mathematics Faculty of ScienceAlexandria University

The fundamental solution for the axi-symmetric translational motion of a microstretch fluid due to a concen- trated point body force is obtained. A general formula for the drag force exerted by the fluid on an axi-symmetric rigid par- ticle translating in it is then deduced. As an application to the obtained drag formula, this paper has discussed the problem of creeping translational motion of a rigid sphere in a mi- crostretch fluid. The slip boundary condition on the surface of the spherical particle is applied. The drag force and the other physical quantities are obtained and represented graph- ically for various values of the micropolarity and slip param- eters.

关键词： Drag force Fundamental solution Mi-crostretch fluid Slip condition

exact solution for the unsteady flow of a semi-infinite micropolar fluid

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Acta Mechanica Sinica 2011年第3期27卷 354-359页

作者： h.h. Sherief M.S. Faltas e.A. Ashmawy Department of Mathematics Faculty of ScienceAlexandria University

The unsteady motion of an incompressible micropolar fluid filling a half-space bounded by a horizontal infinite plate that started to move suddenly is considered. Laplace transform techniques are used. The solution in the Laplace transform domain is obtained by using a direct approach. The inverse Laplace transforms are obtained in an exact manner using the complex inversion formula of the transform together with contour integration techniques. The solution in the case of classical viscous fluids is recovered as a special case of this work when the micropolarity coecient is assumed to be zero. Numerical computations are carried out and represented graphically.

关键词： Unsteady motion . Laplace transform . Microp-olar fluid

Crystal Structure of a Novel Sandwich Inclusion Complex of β-Cyclodextrin with α-Naphthylacetic Acid

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Chemical Research in Chinese Universities 2011年第5期27卷 730-733页

作者： WANG en-ju CheN Guang-ying hAN Chang-ri hainan Provincial Key Laboratory of Tropical Pharmaceutical herb Chemistry School of Chemistry ＆ Chemical Engineering Hainan Normal University Haikou 571158 P. R. China

A supramolecular inclusion complex between β-cyclodextrin（β-CD） and α-naphthylacetic acid was prepared, and its crystal structure was investigated by single-crystal X-ray crystallography. The complex contains two β-CD molecules, one α-naphthylacetic acid, two ethanols and twenty-eight water molecules in the asymmetric unit, which could be formulated as [（C42h70O35）2·（C12h10O2）·（C2h5Oh）2·28h2O]. Two β-CD molecules constitute a dimer by face-to-face contact of their secondary hydroxyl sides. At the interface of the dimer, one α-naphthylacetic acid molecule is sandwiched between two β-CD molecules. each β-CD unit of the dimer includes one ethanol molecule in its cavity. The β-CD dimers are linked together via hydrogen bonding to form layers that are stacked in a brickwork-like pattern. The comparative study of some sandwich complexes elucidates that the interface of the β-CD dimer has a stronger inclusion capacity than the cavity of β-CD for some suitable planar guest molecules. The novel inclusion structure results from the competitive inclusion of α-naphthylacetic acid and ethanol.

关键词： β-Cyclodextrin α-Naphthylacetic acid Inclusion complex Sandwich complex Competitive inclusion

Corrosion Inhibition from Thiol Self-assembly Layer: A high Pressure Perspective

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Journal of Wuhan University of Technology(Materials Science) 2018年第6期33卷 1334-1343页

作者： ReN quanqiang QIU ri School of Materials Science and engineering Wuhan University of Technology State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research Institute Key Laboratory of Marine environmental Corrosion and Bio-fouling Institute of Oceanology Chinese Academy of Sciences

Taking dodecanethiol as the representative, we investigated the corrosion inhibition performance of SAL in seawater under pressures from 0.1 to 9 MPa. By using scanning Kelvin probe, the dodecanethiol SAL is confirmed to build on Cu surface, and the modification of SAL has positively shifted the surface potential to realize the inertness. electrochemical techniques, such as electrochemical impedance spectroscopy and potentiodynamic polarization were used to reveal the corrosion behavior of Cu modified by SAL under the different pressure, i e, 0.1, 3, 6, and 9 MPa. It is indicated that the longer modification time affords better corrosion resistance to Cu. higher static pressure is easier to deteriorate the corrosion inhibition capability due to the penetration effect. A plausible mechanism is proposed to illustrate the degradation process of SAL in the high pressure seawater environment.

关键词： high pressure corrosion self-assembled layer copper dodecanethiol

Communication Atmosphere in humans and Robots Interaction Based on Fuzzy Analytical hierarchy Process 36

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Communication Atmosphere in Humans and Robots Interaction Ba...

Statistical research on the motion properties of the magnetotail current sheet:Cluster observations

第36届中国控制会议

作者： ri Zhang Yong he Zhen-Tao Liu School of Automation China University of Geosciences hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems

ISBN: (纸本)9781538629185

Communication atmosphere in human-Robot Interaction（hri） is estimated by integrating emotional states of humans and robots based on the concept of Fuzzy Atmosfleld（FA）,where human emotion is estimated from bimodal communication cues（i.e.,speech and facial expression） and robot emotion is generated by emotional expression *** Analytical hierarchy Process（FAhP） is used for dynamic weight calculation of emotional states of humans and robots in the FA model,in which a three-level hierarchy is adopted for the analysis of communication atmosphere and four acoustic cues（i.e.,volume,rate,pitch,and duration） are utilized to calculate the dynamic *** is conducted in a multi-modal emotional communication based humans-robots interaction（MeC-hri） system,by which experimental results demonstrate the validity of proposed FA *** the communication atmosphere can help to facilitate smooth communication between humans and robots by adjusting robot behavior for emotion *** proposal is being planned for an atmosphere representation system for realizing causal communication in hri and background music is being considered for the FA model.

关键词： Communication Atmosphere human-Robot Interaction Fuzzy Analytical hierarchy Process Dynamic Weight

来源： cnki会议评论

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Science China(Technological Sciences) 2010年第6期53卷 1732-1738页

作者： h.ReMe e.LUCeK Centre D'etude Spatiale des Rayonnements University Paul SabatierUniversity of ToulouseToulouseFrance UMR 5187 CNRSToulouseFrance Space and Atmospheric Physics Group Blackett LaboratoryImperialCollegeLondonUK

The origin of the flapping motion of the earth’s magnetotail current sheet is one of the most important problems in the magnetotail *** Cluster data,we make a statistical research on the motion properties of the magnetotail current sheet of 2001 and *** calculate the velocities of the magnetotail current sheet using new methods and obtain the distribution of the magnetotail current sheet velocities in the X-Y plane in GSe coordinate *** results show that although most of the current sheets were propagating toward the tail flanks and those of the exceptions lay in dusk side,which is consistent with previous studies,the proportions of the current sheet which were propagating toward midnight (where |YGSe|=0) were higher than those in previous *** of the current sheet in the middle area (|YGSe|e) of the magnetotail are *** high value of the Z component of the velocity further confirms that the middle area of the magnetotail might be a source region for the motion of the current sheets which were propagating towards the tail *** to our case studies,the way the current sheets propagated toward midnight area differs significantly from that toward dusk and dawn side,from which we infer that there might be two different kinds of current sheet motions originated from different *** statistical results of this paper may give some clues for further studies on the origin of the flapping motion of the magnetotail current sheet.

关键词： magnetotail current sheet flapping motion source