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Chinese Physics B 2015年第6期24卷 334-340页

作者： N Asili Firouzabadi m K Tavassoly m.j Faghihi Atomic and molecular Group Faculty of PhysicsYazd University The Laboratory of Quantum Information Processing Yazd University Physics and Photonics Department Graduate University of Advanced Technology

Recently, nonlinear displaced number states （NDNSs） have been manually introduced, in which the deformation function f（n） has been artificially added to the previously well-known displaced number states （DNSs）. Indeed, just a simple comparison has been performed between the standard coherent state and nonlinear coherent state for the formation of NDNSs. In the present paper, after expressing enough physical motivation of our procedure, four distinct classes of NDNSs are presented by applying algebraic and group treatments. To achieve this purpose, by considering the DNSs and recalling the nonlinear coherent states formalism, the NDNSs are logically defined through an algebraic consideration. In addition, by using a particular class of Gilmore-Perelomov-type of SU（1,1） and a class of SU（2） coherent states, the NDNSs are introduced via group-theoretical approach. Then, in order to examine the nonclassical behavior of these states, sub-Poissonian statistics by evaluating mandel parameter and Wigner quasi-probability distribution function associated with the obtained NDNSs are discussed, in detail.

关键词： displaced number state nonlinear coherent state Wigner function nonclassical state

REITERATED HOmOGENIZATION OF DEGENERATE NONLINEAR ELLIPTIC EQUATIONS

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Chinese Annals of mathematics,Series B 2002年第3期23卷 325-334页

作者： j.BYSTRm.j.ENGSTRm P.WALL Dedicated to the memory of jacques-Louis Lions Dedicated to the memory of Jacques-Louis LionsDedicated to the memory of Jacques-Louis Lions

The authors study homogenization of some nonlinear partial differential equations of the form -div (?(hx, h2x,Duh)) =f, where a is periodic in the first two arguments and monotone in the third. In particular the case where a satisfies degenerated structure conditions is studied. It is proved that uh converges weakly in W01,1 (?) to the unique solution of a limit problem as h ? '. moreover, explicit expressions for the limit problem are obtained.

关键词： Homogenization Reiterated monotone Degenerated

Two-fluid modeling of Geldart A particles in gas-fluidized beds

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Particuology 2008年第6期6卷 540-548页

作者： m.A. van der Hoef j.A.m. Kuipers Faculty of Science & Technology University of Twente

We have investigated the effect of cohesion and drag models on the bed hydrodynamics of Geldart A particles based on the two-fluid （TF） model. For a high gas velocity U0 = 0.03 m/s, we found a transition from the homogeneous fluidization to bubbling fluidization with an increase of the coefficient C1, which is used to account for the contribution of cohesion to the excess compressibility. Thus cohesion can play a role in the bed expansion of Geldart A particles. Apart from cohesion, we have also investigated the influence of the drag models. When using the Wen and Yu drag correlation with an exponent n = 4.65, we find an under-prediction of the bed expansion at low gas velocities （U0 = 0.009 m/s）. When using a larger exponent （n = 9.6）, as reported in experimental studies of gas-fluidization, a much better agreement with the experimental bed expansion is obtained. These findings suggest that at low gas velocity, a scale-down of the commonly used drag model is required. On the other hand, a scale-up of the commonly used drag model is necessary at high gas velocity （U0 = 0.2 and 0.06 m/s）. We therefore conclude that scaling the drag force represent only an ad hoc way of repairing the deficiencies of the TF model, and that a far more detailed study is required into the origin of the failure of the TF model for simulating fluidized beds of fine powders.

关键词： Gas-fluidized bed Geldart A particles Two-fluid model Cohesive force Drag correlation

Two-fluid modelling for cylindrical fluidized beds using kinetic theory for rough spheres

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Particuology 2020年第3期18卷 25-34页

作者： Lei Yang j.T.Padding j.A.m.Kuipers Helmholtz Institute Erlangen-Nürnberg for Renewable Energy(IEK-11) Fürther Straβe 24890429 NurnbergGermany Department of Process and Energy Delft University of Technology2628CB DelftThe Netherlands Department of Chemical Engineering and Chemistry Eindhoven University of Technology5600MB EindhovenThe Netherlands

Recently,we have extended the kinetic theory of granular flow (KTGF) to include friction between the spherical particles and tested it in rectangular *** this study,the extended KTGF implemented in cylindrical coordinates is used to model the more-commonly employed cylindrical bubbling fluidized *** attention is paid to the anti-symmetric part of the velocity gradient in the solids stress *** verification of the implementation,a comparison of the present model in the limit of zero friction with the original (frictionless) KTGF model was ***,simulations of bubbling fluidized beds of inelastic particles were performed using our extended KTGF and an effective KTGF model for inelastic particles of jenkins and *** simulation results show good agreement for the time-averaged solids volume fraction distribution and solids circulation ***,our model is validated by predicting the individual bubble behavior in dense bubbling fluidized beds containing different granular materials in a comparison with experimental data from Verma et al.(2014).The extended KTGF leads to an improved agreement with experimental bubble *** to previous work (Yang et al.,2016b,2017c),and by introducing cylindrical coordinates,the current work demonstrates that the extended KTGF improves predictions for the temporal bubble behavior of cylindrical fluidized beds.

关键词： Fluidization Frictional collision Rough particles Cylindrical bed hydrodynamics Two-fluid model

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线性规划最近的发展及新方向（上）

现代科技译丛（大连） 1992年第1期 49-58页

作者： Todd,m.j 朱纪宪

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气田的射孔完井动态

油气井测试 1989年第4期 24-37页

作者： m.j lchara 唐愉拉

虽然确定油井射孔完井动态的研究工作已经进行,但人们对气井的射孔完井动态却所知不多。本文的目的就是要填补这个空白。本研究用一个有限元程序详细地研究了射孔几何参数和地层特性对气井完井动态的影响。尤其是(i)孔密、(ii)孔深、(i... 详细信息

虽然确定油井射孔完井动态的研究工作已经进行,但人们对气井的射孔完井动态却所知不多。本文的目的就是要填补这个空白。本研究用一个有限元程序详细地研究了射孔几何参数和地层特性对气井完井动态的影响。尤其是(i)孔密、(ii)孔深、(iii)相位、(iv)地层渗透率、(v)地层的各向异性和(vi)紊流因子的影响。结果包括如下几点:(1)在压差大约为Δp^2=6.75×10~6psi^2(Δp=1500psi)的气藏中,当水平渗透率小于或等于10md 时,紊流的影响可以忽略不计,但当渗透率为1达西左右或更高时,紊流的影响就可能很显著;(2)在紊流效应不占优势的情况下,孔深和相位能影响产能比;(3)在非均质地层中,为了使射孔井的产能高于裸眼井,需要采用深穿透(≥15in)和高孔密(≥12孔/ft)的射孔;(4)在高渗地层,紊流效应将导致74%的产量损失。本文制作的诺模图可以用来预测气藏的产能比和表皮系数。

关键词：渗透率射孔完井气藏产能比非均质孔隙介质几何参数表皮系数气体流量位角

Composition and evolution of the continental crust:Retrospect and prospect

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Geoscience Frontiers 2022年第5期13卷 1-15页

作者： j.L.R.Touret m.Santosh j.m.Huizenga Institut de minéralogie Physique des MatériauxCosmochimieSorbonne Universités4 Place JussieuF-75005 ParisFrance 121 Rue de la Réunion 75020 ParisFrance School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China Department of Earth Science University of AdelaideAdelaideSA 5005Australia Faculty of Environmental Sciences and Natural Resource management Norwegian University of Life SciencesP.O.Box 5003NO-1432ÅsNorway EGRU(Economic Geology Research Centre) James Cook UniversityTownsvilleQueensland 4811Australia Department of Geology University of JohannesburgPO Box 524Auckland Park 2006South Africa

Until the middle of the 20th century,the continental crust was considered to be dominantly *** hypothesis was revised after the Second World War when several new studies led to the realization that the continental crust is dominantly made of metamorphic *** rocks were emplaced at peak metamorphic conditions in domains,which can be defined by geophysical *** to medium-grade metamorphic rocks constitute the upper crust,granitic migmatites and intrusive granites occur in the middle crust,and the lower crust,situated between the Conrad and moho discontinuities,comprises charnockites and *** continental crust acquired its final structure during metamorphic episodes associated with mantle upwelling,which mostly occurred in supercontinents prior to their disruption,during which the base of the crust experienced ultrahigh temperatures(>1000℃,ultrahigh temperature granulite-facies metamorphism).Heat is provided by underplating of mantle-derived mafic magmas,as well as by a massive influx of low H_(2)O activity mantle fluids,***-density CO_(2) and highsalinity *** fluids are initially stored in ultrahigh temperature domains,and subsequently infiltrate the lower crust,where they generate anhydrous granulite mineral *** brines can reach upper crustal levels,possibly even the surface,along m.jor shear zones,where granitoids are generated through brine streaming in addition to those formed by dehydration melting in upper crustal levels.

关键词： Brines CO_(2) Continental crust Granulite Lower crust

Amylopectin structure and crystallinity explains variation in digestion kinetics of starches across botanic sources in an in vitro pig model

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journal of Animal Science and Biotechnology 2019年第1期10卷 115-127页

作者： Bianca m.j.martens Walter j.j.Gerrits Erik m.A.m.Bruininx Henk A.Schols Laboratory of Food Chemistry Wageningen University and Research Animal Nutrition Group Wageningen University and Research Royal Agrifirm Group Agrifirm North West Europe

Background: Starch is the main source of energy in commonly used pig *** effects related to the extent of starch digestion,also several effects related to variation in digestion rate have recently been demonstrated in *** rates of starch digestion in animals and in in vitro models have been reported,depending on the botanic origin of *** from different botanic sources differ widely in structural and molecular *** the effect of starch properties on in vitro digestion kinetics based on existing literature is hampered by incomplete characterization of the starches,or by a selective choice of starches from a limited number of botanic *** research aimed to analyse the relationships between starch properties and in vitro digestion kinetics of pure starches isolated from a broad range of botanic origins,which are used in non-ruminant diets or have a potential to be used in the *** we studied starch digestion kinetics of potato,pea,corn,rice,barley,and wheat starches,and analysed the granule diameter,number of pores,type and amount of crystalline structure,amylose content and amylopectin side-chain length of all ***: multivariate analysis revealed strong correlations among starch properties,leading us to conclude that effects of most starch characteristics are strongly *** all analysed botanic sources,crystalline type and amylopectin chain length showed the strongest correlation with in vitro digestion *** percentages of A–type crystalline structure and amylopectin side chains of DP 6–24 both increased the rate of *** addition,within,but not across,(clusters of) botanic sources,a decrease in amylose content and increase in number of pores correlated positively with digestion ***: The type of crystalline structure and amylopectin chain length distribution of starch correlate significantly with digestion kinetics of starches ac

关键词： Amylopectin side chain distribution Amylose Granule diameter In vitro digestion kinetics Pores

Techtextil——闻名于世的品牌战略

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国际纺织导报 2000年第2期 70-71页

作者： m.jnecke 陈廷崔运花法兰克福展览公司!德国

Emerging Techniques for Cardiovascular PET

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Cardiovascular Innovations and Applications 2019年第B4期4卷 13-24页

作者： Austin A.Robinson,mD jamieson m.Bourque,mD,mHS Cardiovascular Division and the Cardiovascular Imaging Center Department of MedicineUniversity of Virginia Health SystemCharlottesvilleVAUSA Department of Radiology University of Virginia Health SystemCharlottesvilleVAUSA

Positron emission tomography(PET)has been successfully applied to an increasing number of cardiovascular *** review will highlight the status of cardiovascular PET,including the present state of the art and the expanding pool of clinical evidence guiding its ***,we highlight upcoming developments in the fi eld,including the development of new tracers and applications of PET to novel indications within cardiovascular medicine.

关键词： positron emission tomography(PET) absolute blood fl ow metabolic imaging novel tracers coronary artery disease(CAD) coronary microvascular dysfunction cardiac infection congestive heart failure