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roadway or drilling on the gas seepage field was analyzed, and the extraction mechanism was clarified. On this basis, the academic thought of directional long drilling group instead of high drainage... to explore the coupling relationship between the drilling quantity, extraction volume and the equivalent extraction rate of single drilling. Finally, combined with the concrete geological production conditions......
database. The experimental results prove the superior efficiency.Key words:human activity recognition; complex activity segmentation; key frame extraction......
-仲辛醇协同萃取钽铌萃余液中低浓度钽,铌和钨[J]. 中国有色金属学报, 2021, 31(3): 775-784. DOI: 10.11817/j.ysxb.1004.0609.2021-37768 ZHONG Yue-lian, DENG Chao-yong, SHI Bo, et al. Synergistic solvent extraction of Ta/Nb/W from Ta/Nb extraction raffinate by using TBP and 2-octanol as extractants[J]. The Chinese Journal of Nonferrous Metals, 2021, 31(3): 775-784. DOI: 10.11817/j.ysxb.1004.0609.2021-37768 钽,铌是重要的稀有金属,具有熔点高,塑性好,耐腐蚀......
离子液体在萃取分离中的应用进展马春宏1,2,朱红1,王良2,姜大雨2,闫永胜-1,王庆伟1(1.吉林省四平市吉林师范大学 化学学院2.江苏省镇江市江苏大学化学化工学院)摘 要:简要介绍了离子液体及其特性,综述了近几年来利用离子液体萃取分离不同物质的研究进展情况.离子液体在萃取金属,包括碱金属,过渡金属,稀土金属等离子中的应用比较广泛;在萃取有机物,包括多环芳烃,酚类物质,共沸混合物等中的应用也很多;在萃取生物分子包括生物碱,双链DNA(脱氧核糖核酸,Deoxyribonucleic acid),雌激素物质等也有......
New Methodological Approach to Investigation of Kinetics of REE Extraction in Nonstationary Conditions () Abstract:The influence of periodical oscillations of the temperature on extraction and stripping processes in the extraction systems was studied. Two extraction systems were investigated: (1) 6 mol·L-1 NaNO3-Nd(NO3)3-Pr(NO3)3-TBP-kerosene and (2) [Nd(NO3)3·3TBP]-[Pr(NO3)3·3TBP]-kerosene......
Extraction Behavior of Rare Earths with 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 Using Solid-liquid Extraction Technique高锦章,潘仲巍,杜新贞,康敬万,白光弼摘 要:<正> The extraction behavior of rare earths was studied by using paraffin with ceresin as a diluent containing1-phenyl-3-methyl-4-benzoyl-pyrazolone-5.In solid phase,the composition of complexes is REP3.The......
J. Cent. South Univ. (2020) 27: 164-179 DOI: https://doi.org/10.1007/s11771-020-4286-1 Driving rule extraction based on cognitive behavior analysis ZHAO Yu-cheng(赵宇橙)1, LIANG Jun(梁军)1, CHEN Long(陈龙... of the driver’s long-term driving experience in the process of perception, interaction and vehicle control of road traffic information, a driving behavior rule extraction algorithm based on artificial neural......
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(School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China) Abstract: The selective sequential extraction procedure developed by Tessier was used... of profile layer. Key words: chromium slag; chromium contamination; Tessier sequential extraction ......
