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An online method to determine chlorine stable isotope composition by continuous flow isotope ratio mass spectrometry (CF-IRMS) coupled with a Gasbench IILIU Yun-de(刘运德)1,2, ZHOU Ai-guo(周爱国)1,2, GAN...) and used as an international reference material.Key words:chlorine stable isotope; continuous flow isotope ratio mass spectrometry; CF-IRMS; GasBench II......
J. Cent. South Univ. (2019) 26: 2661-2667 DOI: https://doi.org/10.1007/s11771-019-4203-7 Effects of ratio of hydrogen flow on microstructure of hydrogenated microcrystalline silicon films deposited... (Ar) and hydrogen (H2) gasses as precursor gas. The effects of the ratio of hydrogen flow (H2/(Ar+H2)%)) on the microstructure were evaluated. Results show that the microstructure, bonding structure......
J. Cent. South Univ. (2012) 19: 471-476 DOI: 10.1007/s11771-012-1027-0 Fluid flow and heat transfer characteristics of spiral coiled tube: Effects of Reynolds number and curvature ratio YOO Geun-jong... number are found to follow the proportionality with square root of the Dean number. Individual effect of flow parameters of Reynolds number and curvature ratio was investigated and effect of Reynolds......
length-diameter ratio on pressure loss. The results show that the Box-Benhnken Design (BBD) model can predict the total pressure loss accurately. The optimal factor level appeared in flow passage... models to investigate the influence of connection type, cavity length and cavity length-diameter ratio on pressure loss based on response surface test with the purpose of reducing flow loss in hydraulic......
as: Siavashi Majid, Jamali Mohammad. Optimal selection of annulus radius ratio to enhance heat transfer with minimum entropy generation in developing laminar forced convection of water-Al2O3 nanofluid flow... nanofluid flow in an annulus by two phase mixture model [J]. International Communications in Heat and Mass Transfer, 2013, 49: 25-35. [14] YANG C, LI W, NAKAYAMA A. Convective heat transfer of nanofluids......
yield similar results, indicating small effects of turbulence models on flow characteristics analysis. Geometric variations include area ratio of main and branch pipes, branch pipe diameter, and connection shape of main and branch pipes. Among these parameters, area ratio and branch diameter and shape show strong effect on flow distribution due to high friction and minor loss. Uniform flow......
was extracted, and the vortex energy ratio was proposed to analyze how the perturbation in the flow affected the measurement performance of the vortex flowmeter. The relationship between the vortex energy ratio of the signal and the flow condition was established. The results show that the vortex energy ratio is sensitive to the flow condition and ideal for the characterization of the vortex......
Effect of CHF3/Ar Gas Flow Ratio on Self-masking Subwavelength Structures Prepared on Fused Silica Surface伍景军1,2,叶鑫2,HUANG Jin2,SUN Laixi2,ZENG Yong2,WEN Jibin1,2,GENG Feng2,YI Zao3,蒋晓东2,张魁宝11. State... and the ion-enhanced chemical reaction of metal atoms. With an increase in CHF3/Ar gas flow ratio, the average height of the SWSs increases, the number of SWSs per specific area increases......
Effect of extrusion ratio on coating extrusion of Pb-GF composite wire by numerical simulation and experimental investigation WANG Xin(王 欣), SUN Hong-fei(孙宏飞), FANG Wen-bin(房文斌) School...; Abstract: The extrusion ratio is one of the key parameters for manufacturing......
Influence of Nitrogen Flow Ratio on the Microstructure, Composition, and Mechanical Properties of DC Magnetron Sputtered Zr-B-O-N FilmsDoo-In Kim,KwangHo KimNational Core Research Center for Hybrid... of nitrogen flow ratio on the film microstructure and characteristics were investigated systematically, including the deposition rate, chemical compositions, phase constituents, grain size, chemical......
