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The hydration characteristics and expansion machanism of expansive cement at lowW/B ratio
Journal of Wuhan University of Technology-Mater. Sci. Ed., 2003The hydration characteristics and expansion impetus of three kinds of cement paste under free-and confined-curing conditions were investigated, which were respectively mixed with three different kinds of expansive agent at low W/B ratio. The results show that the hydration products of pure cement paste and paste mixed with expansive agent are same, but
Lu Lin-nu +4 more
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Implementation of Parameters in the Expansion Ratio of Mesh Skin Grafts
Plastic & Reconstructive Surgery, 1997Expansion of a mesh skin graft depends on factors pertaining to the graft itself as well as on parameters of the meshing device. With regard to the graft, we examine the efficiency of graft handling and thickness of the skin graft. With regard to the parameters of the meshing apparatus, which determine the expansion ratio: (1) d equals the distance ...
J J, Vandeput, J C, Tanner, J, Boswick
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On the two-dimensional flow in a sudden expansion with large expansion ratios
Physics of Fluids, 2005In this Brief Communication, the two-dimensional laminar flow of an incompressible viscous jet through a channel with a sudden expansion is analyzed in the case of a large expansion ratio. It is shown that, when the jet Reynolds number is sufficiently large, the momentum exchange between the incoming jet and the recirculating fluid determines the ...
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OPTIMUM EXPANSION RATIO OF CASTELLATED STEEL BEAMS
Engineering Optimization, 1975Abstract In this paper, the authors present a numerical analysis for the optimum expansion ratio based on the elastic as well as the plastic method of analysis. The elastic analysis program is based on an iterative process and involves the calculation of allowable loads corresponding to potentially critical flexural and shear stresses at each increment
A. R. GALAMBOS +2 more
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The threshold expansion ratio of water vapour
Physica, 1947Abstract The threshold expansion pressure ratio for condensation on ions resp. spontaneous condensation Ep1 and Ep2 are determined, applying an expansion to a fixed pressure, Ep being the ratio of the pressure before and after the expansion. The result is Ep1 = 0.741 ± 0.001, Ep2 = 0.716 ± ± 0.002.
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Continued-fraction expansions for ratios of generalized polynomials
Applied Mathematics and Computation, 1980Continued-fraction expansions of Stieltjes and second Cauer from are considered for a ratio of polynomials expressed relative to an arbitrary real orthogonal polynomials basis. Simple tabular arrays are developed for obtaining the coefficients in the expansions. Inverse procedures are also obtained.
Maroulas, John, Barnett, Stephen
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Compression and Expansion of the Market P/E Ratio
The Journal of Investing, 2008Compression and expansion of the average market P/E ratio significantly affected U.S. equity returns in both the bear market of 1969–1981 and the bull market of 1982–1999. We compare two models of the market P/E ratio to determine which paradigm is most useful for financial analysts and portfolio strategists as they anticipate the future direction of ...
Robert A. Weigand, Robert Irons
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Approximation ratio of the digits in Oppenheim series expansion
Publicationes Mathematicae Debrecen, 2008Summary: This paper is concerned with the Hausdorff dimensions of some sets determined by the approximation ratio of the digits in Oppenheim series expansion. We give a general characterization on the Hausdorff dimensions of such sets. As its corollaries, we answer questions posed by J. Galambos.
Wang, Baowei, Wu, Jun
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On critical expansion ratio of natural gas in turboexpanders
Safety and Reliability of Power Industry, 2020В последние годы в российской энергетике среди ученых различных университетов и организаций возник интерес к использованию детандер-генераторных агрегатов (ДГА), или просто турбодетандеров, на тепловых электростанциях.
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The Proceedings of Mechanical Engineering Congress, Japan, 2019
Takeshi IGATASHI +2 more
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Takeshi IGATASHI +2 more
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