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H.M.YOUSSEF 《应用数学和力学(英文版)》2013,34(1):63-74
In this work,a model of two-temperature generalized thermoelasticity without energy dissipation for an elastic half-space with constant elastic parameters is constructed.The Laplace transform and state-space techniques are used to obtain the general solution for any set of boundary conditions.The general solutions are applied to a specific problem of a half-space subjected to a moving heat source with a constant velocity.The inverse Laplace transforms are computed numerically,and the comparisons are shown in figures to estimate the effects of the heat source velocity and the two-temperature parameter. 相似文献
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A. Bürger M. Stanoiu F. Azaiez Zs. Dombrádi A. Algora A. Al-Khatib B. Bastin G. Benzoni R. Borcea Ch. Bourgeois P. Bringel E. Clément J.-C. Dalouzy Z. Dlouhý A. Drouart C. Engelhardt S. Franchoo Zs. Fülöp A. Görgen S. Grévy H. Hübel F. Ibrahim W. Korten J. Mrázek A. Navin F. Rotaru P. Roussel-Chomaz M.-G. Saint-Laurent G. Sletten D. Sohler O. Sorlin Ch. Theisen C. Timis D. Verney S. Williams 《The European physical journal. Special topics》2007,150(1):89-91
An experiment was performed to extend the knowledge of excited
states in neutron-deficient Ca isotopes.
In particular, the first excited state in 36Ca was searched for
to obtain information on the isospin dependence of the
nucleon-nucleon interaction near the proton drip line from a
comparison with its stable mirror nucleus, 36S.
The 36Ca ions were produced using a two-step fragmentation
technique with a 37Ca secondary beam, and in-beam γ-rays
were measured.
First results are the energy of the first 2+ state in 36Ca,
E(2+)=3036(11) keV, and the cross section for the reaction
37Ca → 36Ca at 61.A MeV.
In addition, the de-excitaion of the first 2+ state in 28S
has been observed. 相似文献
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A. Al-Khatib H. Hübel P. Bringel C. Engelhardt A. Neußer-Neffgen G. B. Hagemann C. R. Hansen B. Herskind G. Sletten A. Bracco F. Camera G. Benzoni P. Fallon R. M. Clark M. P. Carpenter R. V. F. Janssens T. L. Khoo T. Lauritsen P. Chowdhury H. Amro A. K. Singh R. Bengtsson 《The European Physical Journal A - Hadrons and Nuclei》2008,36(1):21-29
Excited states in 124Xe were populated in the reaction 82Se(48Ca, 6n)124Xe and γ -ray coincidence relationships were measured with the Gammasphere spectrometer. Two new bands are observed and several
of the previously known bands are extended in the high- as well as in the low-spin region. Two irregular high-spin structures
are also added. The irregularities are a fingerprint of a transition from collective to non-collective behaviour. Configuration
assignments to the new structures are proposed on the basis of systematics and by comparing experimental properties with calculations
within the framework of the cranking model. 相似文献
4.
H. Hübel A. Bürger T. R. Saito H. Grawe P. Reiter J. Gerl M. Górska H. J. Wollersheim A. Al-Khatib A. Banu T. Beck F. Becker P. Bednarczyk G. Benzoni A. Bracco S. Brambilla P. Bringel F. Camera E. Clément P. Doornenbal H. Geissel A. Görgen J. Grębosz G. Hammond M. Hellström M. Kavatsyuk O. Kavatsyuk M. Kmiecik I. Kojouharov W. Korten N. Kurz R. Lozeva A. Maj S. Mandal B. Million S. Muralithar A. Neußer-Neffgen Zs. Podolyák N. Saito A. K. Singh H. Weick O. Wieland M. Winkler C. Wheldon 《Acta Physica Hungarica A》2006,25(2-4):197-202
The first excited 2+ states in neutron-rich 54,56,58Cr were populated by relativistic Coulomb excitation and B (E2, 2 1 + → 0+) values were determined for 56Cr and 58Cr. The B(E2) values show a minimum for 56Cr providing evidence for a subshell closure at N=32. 相似文献
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本文提出了一种新型、易于用传统光学干涉仪测量的非球面。该非球面的检测主要基于Zemax光学程序软件设计的多重配置特性。第一配置为易于测量非球面,第二配置为采用平行平面玻璃板或单透镜作为零位校正器,用于检测第一配置的非球面。本文通过一些实例,说明了易测量非球面检测技术的应用和优势,证实了与圆锥或普通非球面相比,易测量非球面更易于操作与检测,同时有利于减小光学像差。 相似文献
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V. M. Kochkodan N. Hilal V. V. Goncharuk L. Al-Khatib T. I. Levadna 《Colloid Journal》2006,68(3):267-273
Composite polymer membranes with chemically different surfaces are prepared by the photochemical modification of Millipore microfiltration poly(vinylidene fluoride) and polysulfone membranes using 2-acrylamido-2-methyl-1-propanesulfonic acid, 2-hydroxyethyl methacrylate, and 2-(dimethylamino)ethyl methacrylate quaternized with methyl chloride. It is shown that, during the filtration of an E. coli suspension, the membrane flux substantially decreases with time owing to the fouling of the membrane surface by bacterial cells. The membranes with the hydrophilic surface are less susceptible to fouling than hydrophobic membranes, while the ability to recover the performance upon washing is higher for the membranes with a chemically neutral surface than for charged membranes. It is shown that the susceptibility of membranes to microbiological fouling reduces with a decrease in the roughness of the membrane surface. It is established that the membranes modified with the quaternized 2-(dimethylamino)ethyl methacrylate possess antibacterial properties. These membranes proved to be the most efficient in the filtration of natural surface water in a noncontinuous regime, a result that is explained by the ability of membranes to prevent the formation of a fouling biofilm on their surfaces. 相似文献
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