Results 331 to 340 of about 14,074,967 (383)
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Control of the shell structure of ZnO–ZnS core-shell structure
Journal of Nanoparticle Research, 2011Nanostructured ZnO–ZnS core-shell powders were synthesized through a solution method using a thioacetamide (TAA) solution in deionized water. ZnO powder and TAA solution were employed to supply zinc and sulfur ions to form the ZnO–ZnS core-shell structures.
Woo Hyun Nam +4 more
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LISM Structure — Fragmented Superbubble Shell?
Space Science Reviews, 1996Small scale structure in local interstellar matter (LISM) is considered. Overall morphology of the local cloud complex is inferred from Ca II absorption lines and observations of H I in white dwarf stars. Clouds with column densities ranging from 2–100 x 1017 cm-2 are found within 20 pc of the Sun.
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Reversible loss of core–shell structure for Ni–Au bimetallic nanoparticles during CO2 hydrogenation
Nature Catalysis, 2020Xiaoben Zhang +13 more
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Structural optimization of shell structures
Computers & Structures, 1994A previous computer program (due to \textit{J. Kiusalaas} and \textit{G. B. Reddy}) has been modified so as to be applied to the structural optimization of thin shell structures subjected to stress and displacement constraints. In the modified program, the torsional spring elements are eliminated (by modifying the membrane stiffness matrix of the ...
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2017
Formulae are given for the bending and shear stress in a long shell structure such as an aircraft wing, together with formulae for the different modes of buckling. These are used in the optimization of some reinforced shell structures. Alternative methods for modelling the reinforcement are discussed. At higher stresses, yielding of the material causes
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Formulae are given for the bending and shear stress in a long shell structure such as an aircraft wing, together with formulae for the different modes of buckling. These are used in the optimization of some reinforced shell structures. Alternative methods for modelling the reinforcement are discussed. At higher stresses, yielding of the material causes
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2014
In this paper the connection of double-curved double glass elements with a translucent polymer is described together with a first prototype of a double glass structure with translucent connections without any other additional supporting structure. With this technique, it is possible to make translucent shell structures of double glass elements. In this
Pronk, A.D.C. +2 more
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In this paper the connection of double-curved double glass elements with a translucent polymer is described together with a first prototype of a double glass structure with translucent connections without any other additional supporting structure. With this technique, it is possible to make translucent shell structures of double glass elements. In this
Pronk, A.D.C. +2 more
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Hyperbolic Paraboloid Shell Structures
SP-110: Hyperbolic Paraboloid Shells, 1988Shell st1·uctures mobilize geomet1·y to activate both the membrane and the flexural intemal force systems to efficiently suppo1·t any distl'ibuted loads applied to those st1·uctures. Based p1·ima1·ily on theit· efficiency, these geometric structural fo1·ms are employed in a number of industrial applications such as p1·essure vessels, containment stl ...
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Shell Structure of Exotic Nuclei
2008A basic introduction to the nuclear shell model is presented, with illustrative explanations of shell-model concepts and procedures. All details of many-body theories are avoided. First, we explain how magic numbers and shell structures appear from fundamental properties of nuclei such as the short-range attractive interaction and density saturation ...
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Portable acoustical shell structure
The Journal of the Acoustical Society of America, 1997A portable acoustical shell for the performing arts and the like, and which includes a plurality of generally quadrilateral, and preferably trapezoidal, sound reflecting panels arranged together as an assembly along adjacent long side edge margins in substantially abutting juxtaposed relation to form a forwardly open, arch-like configuration.
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Journal of Sound and Vibration, 1981
Abstract In this paper the stresses obtained for various (thin) shell structures by using two types of doubly curved finite elements are compared with published information. One of the elements—a ring shell element—is designed to analyze axisymmetric structures such as cylinders and hyperboloids.
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Abstract In this paper the stresses obtained for various (thin) shell structures by using two types of doubly curved finite elements are compared with published information. One of the elements—a ring shell element—is designed to analyze axisymmetric structures such as cylinders and hyperboloids.
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