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왕효성(Xiaocheng Wang) 한국중원언어학회 2012 언어학연구 Vol.0 No.22
Mother tongue have a great influence on learning a foreign language. When using a foreign language, people tend to think in their mother tongue first and translate them into the foreign language, which usually leads to some syntax errors and non-fluent statements. Cross-linguistic comparisons can help foreign language learners avoid the errors due to the mother tongue thinking. In this study, we compare the plural markings of Korean ‘deul(들)’ and Chinese ‘men(們)’. We analyse the similarities and differences in grammatical category, meaning, and combination relationship. This paper draw fours conclusions: 1)Both ‘deul’ and ‘men’ are suffix to combine with noun and pronoun, 2) In the case of noun combination, ‘deul’ can be combined with not only a proper noun but also other nouns for expressing plural meaning, but ‘men’ can not be combined with the nouns that express object and the nouns of animals, unless the nouns of animals have already be anthropomorphized. 3)In the case of pronoun combination, ‘deul’ can not be combined with personal pronoun‘na(나)/, neo(너)’ directly, but can be combined in a way of ‘jeo hui deul(저희들), neo hui deul(너희들)’, however the usage of ‘men’ doesn’t have the same limitations, but cannot combine with demonstrative pronouns.
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Babar Ali,Xiaocheng Lan,Muhammad Tahir Arslan,Syed Zulfiqar Ali Gilani,Huanjun Wang,Tiefeng Wang 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.88 No.-
Glycerol dehydration to value-added acrolein over zeolite catalysts is a useful approach to offer asustainable economic route for the biodiesel industry. Glycerol dehydration over H-ZSM-5 withconventional morphology often exhibits a significant mass transfer limitation and inhibits the access toactive sites in the micropores, which causes low activity, selectivity, and severe catalyst deactivation. Inthis study, a significant impact of b-axis channel length on acrolein selectivity and catalyst activity wasrevealed by using H-ZSM-5 synthesized with varied channel length in b-axis of 60, 130, 180, and 250 nm. Complete glycerol conversion and high acrolein selectivity (88%) were observed over H-ZSM-5 with60 nm channels length in b-axis, due to high availability of active sites and enhanced diffusion throughthe shortest channels, which dramatically suppressed the coke formation. The catalysts with long b-axischannels exhibited a slow internal diffusion, leading to increased polymerization side reactions and cokeformation.
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A Simplified Li-ion Battery SOC Estimating Method
Xiaoqiang Zhang,Xiaocheng Wang,Wei-ping Zhang,Geyang Lei 한국전기전자재료학회 2016 Transactions on Electrical and Electronic Material Vol.17 No.1
The ampere-hour integral method and the open circuit voltage method are integrated via the extended Kalman filter method so as to overcome insufficiencies of the ampere-hour integral method and the open circuit voltage method for estimating battery SOC. The process noise covariance and the measurement noise covariance of the extended Kalman filter method are simplified based on the Thevenin equivalent circuit model, with a proposed simplified SOC estimating method. Verification of DST experiments indicated that the battery SOC estimating method is simple and feasible, and the estimated SOC error is no larger than 2%.
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A Simplified Li-ion Battery SOC Estimating Method
Zhang, Xiaoqiang,Wang, Xiaocheng,Zhang, Weiping,Lei, Geyang The Korean Institute of Electrical and Electronic 2016 Transactions on Electrical and Electronic Material Vol.17 No.1
The ampere-hour integral method and the open circuit voltage method are integrated via the extended Kalman filter method so as to overcome insufficiencies of the ampere-hour integral method and the open circuit voltage method for estimating battery SOC. The process noise covariance and the measurement noise covariance of the extended Kalman filter method are simplified based on the Thevenin equivalent circuit model, with a proposed simplified SOC estimating method. Verification of DST experiments indicated that the battery SOC estimating method is simple and feasible, and the estimated SOC error is no larger than 2%.
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Yafei Li,Xiaocheng Lan,Boyang Liu,Tiefeng Wang 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.107 No.-
A stable and highly efficient supported Cu-Ni catalysts for the conversion of ethyl levulinate (EL) toc-valerolactone (GVL) was developed. The catalysts were characterized by XRD, TEM, TPD, TPR, andXPS. The support effect of metal oxides (Al2O3, SiO2, ZrO2, and TiO2) revealed that Cu-Ni supported onAl2O3 showed the highest activity for EL hydrogenation to ethyl 4-hydroxypentanoate (EHP) and thesubsequent intramolecular esterification of EHP to GVL. EHP intramolecular esterification to GVL in theethanol solution was a reversible reaction with an equilibrium constant of 24 at 453 K. A simplified reactionkinetic network was established. The solvent had a significant influence on the reaction equilibriumand the catalyst stability. Cu-Ni/Al2O3 in n-hexane solvent gave a higher GVL yield than that in ethanolsolvent, and showed better recyclability than that in toluene solvent. With optimizing the conditions, Cu-Ni/Al2O3 gave 99.9% conversion and 98% selectivity to GVL with a space–time yield of 1.13 gGVL gcat-1 h1 inn-hexane solvent with good recyclability.
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Kim, Seungju,Shamsaei, Ezzatollah,Lin, Xiaocheng,Hu, Yaoxin,Simon, George P.,Seong, Jong Geun,Kim, Ju Sung,Lee, Won Hee,Lee, Young Moo,Wang, Huanting Elsevier 2018 Journal of membrane science Vol.549 No.-
<P><B>Abstract</B></P> <P>This paper reports the preparation of mixed matrix membranes (MMMs) by incorporating a two-dimensional zeolitic imidazolate framework-L (ZIF-L) into a highly gas permeable hydroxyl group-containing polyimide (PI) for hydrogen separation. ZIF-L has a leaf-shaped morphology with excellent CO<SUB>2</SUB> adsorption properties due to strong interaction between ZIF-L and CO<SUB>2</SUB> molecules. The dispersion of ZIF-L crystals in the polymer phase increased CO<SUB>2</SUB> adsorption and restricted CO<SUB>2</SUB> transport through MMMs, resulting in a significant increase of H<SUB>2</SUB> selectivity over CO<SUB>2</SUB>. The gas transport properties of MMMs with a ZIF-L loading up to 20wt% were investigated, and the results showed such MMMs had a H<SUB>2</SUB> permeability of 260 Barrers and ideal H<SUB>2</SUB>/CO<SUB>2</SUB> selectivity of 13.4 at room temperature. The membranes presented here have the potential for large-scale fabrication for hydrogen separation applications.</P> <P><B>Highlights</B></P> <P> <UL> <LI> MMMs were fabricated by incorporating two-dimensional ZIF-L into polyimides. </LI> <LI> ZIF-L loading could be up to 20% (w/w), improving CO<SUB>2</SUB> sorption capacity. </LI> <LI> The resulting MMMs showed a dramatic increase in H<SUB>2</SUB>/CO<SUB>2</SUB> selectivity. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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