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Chinese Physics Letters 2013年第1期30卷 165-168页

作者： Ahmet kaya Şemsettin Altındal YaseminŞafak Asar Zekayi Sönmez Department of Physics Faculty of SciencesGazi University06500AnkaraTurkey

An Al/SiO_(2)/p-Si(MOS)capacitor with a thick(826Å)interfacial oxide layer(SiO_(2))which is formed by using the thermal oxidation method is fabricated to investigate both frequency and applied bias voltage dependences of real and imaginary parts of dielectric constant(ϵ'andϵ")and electric modulus(M'and M"),loss tangent(tanδ)and ac electrical conductivity(σ_(ac))in a wide frequency range from 1 kHz to 1 MHz at room *** dielectric properties of the MOS capacitor are obtained using the forward and reverse bias capacitance-voltage(C–V)and conductance-voltage(G/ω–V)measurements in the applied bias voltage range 1.4–5.6 *** values ofϵ',ϵ",tanδ,M',M"and σ_(ac) are found to be strong functions of frequency and applied bias voltage in the depletion region due to excess capacitance Cex and conductance G_(ex)/ω especially at low *** experimental results show that the interfacial polarization can occur at low frequencies more easily,consequently contributing to the dispersion inϵ',ϵ",tanδ,M',M"and σ_(ac) values of the MOS *** other reason for dispersion in the dielectric properties may be attributed to a particular density distribution of interface states(nss)localized at the Si/SiO_(2) interface,as well as space charge carriers and inhomogeneity of interfacial oxide *** increase in conductivity with increasing frequency can be attributed to the hopping type conduction *** can be concluded that theϵ',ϵ",tanδ,M',M"and σ_(ac) values of the Al/SiO_(2)/p-Si(MOS)capacitor are strongly dependent on both the frequency and applied bias voltage especially in the depletion region.

关键词： polarization dielectric interfacial

Petrology,geochemistry and source characteristics of the Burpala alkaline massif,north Baikal

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Geoscience Frontiers 2017年第4期8卷 711-719页

作者： n.V.Vladykin i.A.Sotnikova Vinogradov institute of Geochemistry Siberian BranchRussian Academy of Sciences

The Burpala alkaline massif contains rocks with more than 50 minerals rich in Zr,nb,Ti,Th,Be and rare earth elements（REE）.The rocks vary in composition from shonkinite,melanocratic syenite,nepheline and alkali syenites to alaskite and alkali granite and contain up to 10%LiLE and HSFE,3.6%of REE and varying amounts of other trace elements（4%Zr,0.5%Y,0.5%nb,0.5%Th and 0.1%U）.Geological and geochemical data suggest that all the rocks in the Burpala massif were derived from alkaline magma enriched in rare earth *** extreme products of magma fractionation are REE rich pegmatites,apatite-fiuorite bearing rocks and *** Sr and nd isotope data suggest that the source of primary melt is enriched mantle（EM-Ⅱ）.We correlate the massif to mantle plume impact on the active margin of the Siberian continent.

关键词： Syenite Pegmatite Rare metal and rare earths Petrology Geochemistry

2 nd Mid-European Clay Conference

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Episodes 2005年第1期28卷 57-59页

作者： Viczián, i Geol inst Hungary H-1143 Budapest Hungary

The 2nd Mid-European Clay Conference (MECC'04) was held between 20-24th September 2004, in Miskolc, Hungary. The idea to hold common conferences was accepted by the national clay groups of four neighbouring countries, Poland, Slovakia, Hungary and Croatia, during the EUROCLAY Meeting in Cracow, Poland, in 1999. The first conference was held in 2001 at Stará Lesná, in the High Tatra Mts. in Slovakia.

关键词：欧洲粘土地质学会议学术成果土壤科学

Anisotropy of Critical Fields in MgB_2: Two-Band Ginzburg-Landau Theory for Layered Superconductors

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Communications in Theoretical Physics 2009年第3期51卷 563-569页

作者： i.n.Askerzade B.Tanatar institute of Physics Azerbaijan National Academy of Sciences Department of Physics Bilkent University Department of Computer Engineering Engineering Faculty of Ankara University

The temperature dependence of the anisotropy parameter of upper critical field γHe2 （T） = Hc2^‖ （T） /Hc2^⊥ （T） and London penetration depth γλ （T） = λ‖（T）/λ⊥ （T） are calculated using two-band Ginzburg-Landau theory for layered superconductors. it is shown that, with decreasing temperature the anisotropy parameter γHc2 （T） is increased, while the London penetration depth anisotropy γλ（T） reveals an opposite behavior. Results of our calculations are in agreement with experimental data for single crystal MgB2 and with other calculations..Results of an analysis of magnetic field Hc1 in a single vortex between superconducting layers are also presented.

关键词： two-band superconductivity Ginzburg-Landau theory layered superconductors critical magnetic fields

Asian Revitalization: Adaptive Reuse in Hong Kong, Shanghai, and Singapore, edited by Katie Cummer and Lynne D. DiStefano. Hong Kong University Press, Hong Kong, 2021. iSBn 978-988-8528-55-4

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Built Heritage 2022年第2期6卷 102-105页

作者： Deniz ikiz kaya Department of the Built Environment Eindhoven University of TechnologyPO Box 513Eindhoven 5600 MBThe Netherlands

Reuse of abandoned or underused historic buildings and sites has become an increasing global trend within the built environment in the past two decades(Bullen and Love 2011;Gravagnuolo et al.2017).Bypassing the wasteful processes of demolition and new construction,adaptive reuse prolongs the lifespan of cultural heritage,contributes to environmental sustainability and enhances urban livability(ikiz kaya et al.2021).Focusing on three Asian global cities—Hong Kong,Shanghai and Singapore,the book of Asian Revitalization:Adaptive Reuse in Hong Kong,Shanghai,and Singapore,edited by Cummer and DiStefano,provides a needed analysis of adaptive reuse trends,policies and practices in Asian context.

关键词： Stefan Singapore Asian

numerical Analysis of the Tip Leakage Flow Field in a Transonic Axial Compressor with Circumferential Casing Treatment

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Journal of Thermal Science 2010年第3期19卷 198-205页

作者： G.Legras n.Gourdain i.Trebinjac LMFA-UMR CnRS 5509 Ecole Centrale de Lyon /Université Lyon 1 /INSA69134EcullyFrance CERFACS Computational Fluid Dynamics Team31057ToulouseFrance

This paper reports on numerical investigations aimed at understanding the influence of circumferential casing grooves on the tip leakage flow and its resulting vortical *** results and conclusions are based on steady state 3D numerical simulations of the well-known transonic axial compressor nASA Rotor 37 near stall operating *** calculations carried out on the casing treatment configuration reveal an important modification of the vortex topology at the rotor tip *** grooves limit the expansion of the tip leakage vortex in the direction perpendicular to the blade chord,but generate a set of secondary tip leakage vortices due to the interaction with the leakage mass ***,a deeper investigation of the tip leakage flow is proposed.

关键词： transonic axial compressor casing treatment circumferential groove tip leakage vortex

Transition from oceanic subduction to continental collision:insights from volcanogenic-sedimentary rocks of the Tannuola terrane(northern Central Asian Orogenic Belt)

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Geoscience Frontiers 2024年第4期15卷 41-60页

作者： E.V.Vetrov n.i.Vetrova V.S.Sobolev institute of Geology and Mineralogy SB RAS Koptyuga ave.3NovosibirskRussia

Magmatism associated with oceanic subduction plays a dominant role in crustal growth during the Earth's *** Tannuola terrane,situated in the northern Central Asian Orogenic Belt(CAOB),is a key area to understanding oceanic subduction and initial collision processes in the northern *** order to investigate the switch from subduction to collision settings,detailed field mapping,zircon SHRiMP U-Pb geochronological and whole-rock geochemical studies of volcanogenic-sedimentary rocks from the Tannuola terrane were carried *** U-Pb ages indicate multi-stage volcanism lasted at least 30 Ma from~540 to~510 Ma,that can be divided into three events:the late Ediacaran(before~540 Ma),the early Cambrian(~520 Ma)and the middle Cambrian(~510 Ma).These ages are inter-preted to the initial,main and final stages of oceanic subduction during the late Proterozoic-early *** the late Ediacaran,tholeiitic basalts with highεnd(t)values(from+7.4 to+8.5)were *** forming by the 10%-30%partial melting of spinel-garnet mantle source during slab *** the early Cambrian,transitional from tholeiitic to calc-alkaline basaltic rocks withεnd(t)value(+5.6)and coeval intermediate-felsic volcanic rocks with similarεnd(t)values(+5.9 and+6.5)*** early Cambrian basaltic rocks are interpreted to be derived by 10%-30%partial melt-ing of a depleted mantle source metasomatized by slab-derived fluids released from the subducting ocea-nic *** middle Cambrian calcalkaline basaltic rocks withεnd(t)value of+6.2 might be emplaced as a result of low(5%-10%)degree partial melting of a metasomatized mantle followed by fractional crys-tallization of clinopyroxene and *** intermediate-felsic volcanic rocks withεnd(t)values from+6.0 to+6.8 were formed through fractionation of the juvenile neoproterozoic *** middle Cambrian volcanism is interpreted to be triggered by the slab break-off during the transition to a collisional se

关键词： island-arc magmatism Ediacaran Cambrian zircon U-Pb dating nd isotopes Central asian orogenic belt

Unsteady Pressure Measurements in a High-Speed Centrifugal Compressor

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Journal of Thermal Science 2010年第1期19卷 34-41页

作者： n.Bulot X.Ottavy i.Trebinjac Laboratoire de Mécanique des Fluides et d'Acoustique(LMFA) UMR CNRS 5509 Ecole Centrale de LyonUCBLyon IINSA 36 av.Guy de Collongue69134 Ecully cedexFrance

This paper presents the unsteady data acquisition system used to measure the pressure field in high speed *** and electronic sketches are given for the conditioners developed in-house that have been used to amplify and to filter the pressure signal with the aim of acquiring data up to 150 kHz.A discussion of the experimental results carried out in a centrifugal compressor is *** different processing of the pressure signals and a comparison with URAnS simulations,the excitation of the pressure transducers by the pressure waves generated by shock waves that occur between the impeller and the diffuser is *** levels of pressure fluctuations measured when entering into surge are also presented and reveal very repetitive behaviour of the flow instabilities.

关键词： unsteady pressure measurements conditioner high frequency high speed centrifugal compressor.

Solutions of the Schrdinger Equation with Quantum Mechanical Gravitational Potential Plus Harmonic Oscillator Potential

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Communications in Theoretical Physics 2014年第2期61卷 149-152页

作者： B.i.ita A.i.ikeuba A.n.ikot Theoretical Quantum Chemistry Group Department of Chemistry University of Calabar Theoretical Physics Group Department of Physics University of Uyo

The solutions of the Schrodinger equation with quantum mechanical gravitational potential plus harmonic oscillator potential have been presented using the parametric nikiforov-Uvarov method. The bound state energy eigen values and the corresponding un-normalized eigen functions are obtained in terms of Laguerre polynomials. Also a special case of the potential has been considered and its energy eigen values are obtained.

关键词： Schrodinger equation quantum mechanical gravitational potential harmonic oscillator nikiforov-Uvarov method Laguerre polynomials

influence of elastic foundations and carbon nanotube reinforcement on the hydrostatic buckling pressure of truncated conical shells

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Applied Mathematics and Mechanics(English Edition) 2020年第7期41卷 1011-1026页

作者： A.H.SOFiYEV i.T.PiRMAMEDOV n.KURUOGLU Department of Civil Engineering Suleyman Demirel UniversityIsparta 32260Turkey Department of Mathematics Azerbaijan Technical UniversityBaku 1073Azerbaijan Department of Civil Engineering Gelisim UniversityIstanbul 34310Turkey

in this study,the effects of elastic foundations(EFs)and carbon nanotube(CnT)reinforcement on the hydrostatic buckling pressure(HBP)of truncated conical shells(TCSs)are *** first order shear deformation theory(FOSDT)is generalized to the buckling problem of TCSs reinforced with CnTs resting on the EFs for the first *** material properties of composite TCSs reinforced with CnTs are graded linearly according to the thickness *** Winkler elastic foundation(W-EF)and Pasternak elastic foundation(P-EF)are considered as the *** basic relations and equations of TCSs reinforced with CnTs on the EFs are obtained in the framework of the FOSDT and solved using the Galerkin *** of the innovations in this study is to obtain a closed-form solution for the HBP of TCSs reinforced with CnTs on the ***,the effects of the EFs and various types CnT reinforcements on the HBP are investigated *** obtained results are compared with the results in the literature,and the accuracy of results is confirmed.

关键词： truncated conical shell(TCS) carbon nanotube(CnT) Winkler elastic foundation(W-EF) Pasternak elastic foundation(P-EF) hydrostatic pressure buckling