Results 321 to 330 of about 8,179,783 (370)

The effect of expansion ratio on the critical Reynolds number in single fracture flow with sudden expansion

, 2016
Flow in a single fracture (SF) is an important research subject in groundwater hydrology, hydraulic engineering, radioactive nuclear waste repository and geotechnical engineering. An abruptly changing aperture is a unique type of SF. This study discusses
Jiazhong Qian, Lei Ma, Hongbin Zhan, Q. Luo, Xiao Wang, Mu Wang   +5 more
semanticscholar   +1 more source

Development of High Expansion Ratio Helium Turbo Expander

1992
The authors developed a high expansion ratio radial inflow turbine for a helium liquefier of 100 L/h capacity for use with a 70 MW superconductive generator. The following results were obtained from this development work: 1)Very stable and highly reliable operation was maintained through use of a externally pressurized thrust bearing and a tilting pad ...
N. Ino, A. Machida, K. Ttsugawa, Y. Arai, M. Matsuki, H. Hashimoto, A. Yasuda   +6 more
openaire   +1 more source

The hydration characteristics and expansion machanism of expansive cement at lowW/B ratio

Journal of Wuhan University of Technology-Mater. Sci. Ed., 2003
The 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, He Yong-jia, Li Yue, Ding Qing-jun, Hu Shu-guang   +4 more
openaire   +1 more source

Effect of Planar Anisotropy on the Hole Expansion Ratio of Cold-Rolled DP 590 Steel

Transactions of the Indian Institute of Metals, 2021
M. Chinara, S. Paul, S. Chatterjee, S. Mukherjee   +3 more
semanticscholar   +1 more source

Measurement Permanent Volumetric Expansion Ratio for Gas Cylinder

2007 8th International Conference on Electronic Measurement and Instruments, 2007
The permanent volumetric expansion ratio is one of the most important parameters in quality estimating of the gas cylinders, and the correctness and accuracy are dependent on the measuring device, which can be improved by the device technical level and weakening the environment influence.
Lv Qiujuan, Zhao Jiuling, Hou Genliang
openaire   +1 more source

Brood sex ratio in expansive and non-expansive tern species in east-central Poland

Bird Study, 2016
Capsule Evidence from two tern species does not support the theory that species in expansion should bias their brood sex ratios towards the more dispersing sex.Aims Sex ratio theory predicts that when a species is in expansion, the sex ratio should be biased towards the more dispersing sex.
Golawski, Artur, Kasprzykowski, Zbigniew, Ledwon, Mateusz, Mroz, Emilia, Morelli, Federico   +4 more
openaire   +3 more sources

On the two-dimensional flow in a sudden expansion with large expansion ratios

Physics of Fluids, 2005
In 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 ...
openaire   +2 more sources

Eternal Time and Temporal Expansion: Proclus’ Golden Ratio

2009
Iamblichus elevated Time from the level of the Soul to the level of the Intellect and elevated Eternity to a level above the Intellect. In doing so, he took several steps beyond Plotinus along the road of hypostatizing grades of reality. Plotinus distinguished between a higher and a lower time (III.7.13, 58ff). Iambichus posited a superior time that is
openaire   +1 more source

Uniform Asymptotic Expansion of Likelihood Ratio for Markov Dependent Observations

Annals of the Institute of Statistical Mathematics, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Expansion Performance and Corrosion Failure of Solid Expandable Tubular Under High Expansion Ratio

SPE Journal
Summary As a repair tool for damaged casing wells, the solid expandable tubular (SET) needs to have good expansion performance and corrosion resistance under high expansion rate conditions. However, there are few research studies on the corrosion performance of SET after downhole expansion.
Changshuai Shi, Tiandi Zhu, Xiaohua Zhu
openaire   +1 more source