共搜索到11575条信息，每页显示10条信息，共1158页。用时：0小时0分0秒784毫秒
J. Cent. South Univ. Technol. (2007)04-0580-04 DOI: 10.1007/s11771-007-0111-3 Quality evaluation of layerlike backfilling and flow pattern of backfill slurry in stope PENG Xin(彭 欣), LI Xi...) ______________________________________________________________________________ Abstract:Stability condition and quality evaluation formula of layerlike backfilling roof, Q≥C, where Q denotes is quality index depending on allowable compressive or tensile......
they would be consumed by the discontinuously-recrystallized grains (cube-oriented grains) in subsequent annealing. On the other hand, the pattern quality index of recrystallized grains shows dependence on the crystal orientation which might introduce some errors into evaluating volume fraction of recrystallization by integrating pattern quality index of EBSD. Key words: high purity aluminum......
(PCA) Principal component analysis (PCA) has been widely applied in water quality data analysis [14], which is a powerful pattern recognition tool to identify the underlying factors or variables from... J. Cent. South Univ. (2019) 26: 3252-3260 DOI: https://doi.org/10.1007/s11771-019-4250-0 Surface water quality and potential health risk assessments in Changsha-Zhuzhou-Xiangtan section......
Establishment of water quality index (Na+, Ca2+) for purified water reused to zinc electrolysis process CHAI Li-yuan(柴立元), XIAO Hai-juan(肖海娟), WANG Yun-yan(王云燕), PEI Fei(裴 斐... experiments, and the water quality index of reused water was established. The results show that the conductivity of the solution and the current efficiency decrease as these two kinds of positive ions......
A systematic method based on statistical pattern recognition for estimating product quality on-lineGuang Li, Huade Li, Shaoyuan Sun, and Zhengguang XuInformation Engineering School, University... of the object, a systematic method based on statistical pattern recognition is developed in order to estimate the product quality on-line. The mapping relationship between a feature space and a product......
based on experimental data. According to the experimental data of the typical flow pattern, the expression of parameter C is obtained, and index and parameter are a=6.23, b=1.05, d=1850, g=0.85 and h... J. Cent. South Univ. (2019) 26: 2528-2542 DOI: https://doi.org/10.1007/s11771-019-4192-6 Flow pattern and pressure drop of gas-liquid two-phase swirl flow in a horizontal pipe RAO Yong-chao(饶永超)1......
J. Cent. South Univ. (2016) 23: 2321-2328 DOI: 10.1007/s11771-016-3290-y Experiment study of optimization on prediction index gases of coal spontaneous combustion NIU Hui-yong(牛会永)1, 2, DENG Xiang... tested in laboratory. The data obtained from laboratory determination were initialized for the value which was defined as "K". The ratio of each index gas and value of "K", and the ratio of combination......
. In comparison with the steady piercing process, the variables in relation with the tube hollow quality exclude the entry temperatures of the upper roll and the lower roll. Quantitative index of the tube hollow... important tube hollow quality index [13]. The transversal thickness unevenness is defined as the ratio of the maximum thickness deviation to the nominal thickness: ......
significantly improve the quality of ERT image reconstruction. Key words: electrical resistance tomography; adaptive sensor; sparse representation; flow pattern identification Cite this article as: WANG Pai... reconstruction quality. Table 6 Image reconstruction results for three flow patterns Continued 5 Conclusions Due to the inherent soft field effect of the ERT sensor, the flow pattern has a great......
decreases, pressure sweep efficiency and deliverability index increase; meantime, the deliverability index of rectangular well pattern has much more rational increase. Under the same drawdown pressure...Experimental evaluation on well pattern adaptability of ultra-low permeability reservoir using sandstone flat modelXIAO Qian-hua(肖前华)1, WEI Guo-qi(魏国齐)1, 2, YANG Zheng-ming(杨正明)1, 2, XU Xuan(徐轩)2......
