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Exploring metal-organic frameworks in electrochemistry by a bibliometric analysis
Weimin Ye,Wang Yang 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.109 No.-
Considering the great significance of metal organic framework (MOF) in the field of electrochemistry andthe knowledge gap in its development trend and research direction, this study collects 2,353 related publicationsindexed by Web of Science Core Collection published in the past 20 years. The analysis and mappingresults reveal key information such as time series, countries/region, institutions, publication sourcesand citations. Furthermore, this study identifies the development trend and research hotspot of MOF,including nine valuable topics such as hydrogen storage, battery/capacitor materials, electrocatalysisand MOF composite energy storage. The findings and suggestions of this study can provide helpful referenceand guidance for understanding the application and prospect of MOF in electrochemistry.
Yang, Letian,Gu, Zhifu,Zhao, Xuejun,Zhang, Weimin Techno-Press 2013 Wind and Structures, An International Journal (WAS Vol.16 No.2
The flow around two rectangular cylinders with aspect ratio of 0.5 in a tandem arrangement, was investigated using pressure measurements (in a wind tunnel) and flow visualizations (in a water tunnel) in the range of P/h from 0.6 to 4.0. Four flow patterns were identified, and processes of shear layers wrapping around, the shear layer reattachment, vortices wrapping around and vortices impingement, were observed. Mean and rms pressure distributions, flow visualizations and Strouhal numbers were presented and discussed. The paper revealed that the variations of Strouhal numbers were associated with the shear layers or vortex interference around two cylinders.
Letian Yang,Zhifu Gu,Xuejun Zhao,Weimin Zhang 한국풍공학회 2013 Wind and Structures, An International Journal (WAS Vol.16 No.2
The flow around two rectangular cylinders with aspect ratio of 0.5 in a tandem arrangement, was investigated using pressure measurements (in a wind tunnel) and flow visualizations (in a water tunnel) in the range of P/h from 0.6 to 4.0. Four flow patterns were identified, and processes of shear layers wrapping around, the shear layer reattachment, vortices wrapping around and vortices impingement, were observed. Mean and rms pressure distributions, flow visualizations and Strouhal numbers were presented and discussed. The paper revealed that the variations of Strouhal numbers were associated with the shear layers or vortex interference around two cylinders.
A New Phenolic Glycoside from Mussaenda pubescens
Zhao, Weimin,Xu, Rensheng,Qin, Guowei,Wu, Houming,Jiang, Shaokai,Yang, Genjin The Korean Society of Pharmacognosy 1996 Natural Product Sciences Vol.2 No.1
A new phenolic glycoside named mussaendoside L (1), along with four known iridoidal glycosides $(2{\sim}5)$ were isolated from the aerial parts of Mussaenda pubescens Ait.f. Their structures were elucidated on the basis of chemical and spectroscopic evidence.
Random weighting M-estimation for linear errors-in-variables models
Jiang, Rong,Yang, Xiaohan,Qian, Weimin 한국통계학회 2012 Journal of the Korean Statistical Society Vol.41 No.4
In this paper, we extend the random weighting method to linear errors-in-variables models and propose random weighting M-estimators (RWME) for parameters. Its large sample properties are studied and the consistency and asymptotic normality are proved under mild conditions. In addition, the results facilitate the construction of confidence regions and hypothesis testing for the unknown parameters. Extensive simulations are reported, showing that the proposed method works well in practical settings. The proposed methods are also applied to a data set from an AIDS clinical trial group study.
Ranran Jian,Weimin Yang,Pengcheng Xie 한국고분자학회 2017 폴리머 Vol.41 No.1
The effects of different surface treatments of an injection molding screw have been investigated using light guide plates as a representative precision component. The quality of the fabricated light guide plates was compared for different screw coatings, using the stripping performance, surface microstructure and adhesion strength as criteria. In addition, the results obtained using different combinations of screw coatings were analyzed in order to identify the optimum screw surface treatment method for the large scale production of polycarbonate light guide plates. It was found that light guide plate parts fabricated using a screw with a TiAlN/Cr multi-coating had the best performance, with a defect percentage of only 0.11%, much lower than the value of 19.21% obtained using a screw with a conventional hard chrome coating.
Sida Wu,Weimin Yang,Jin Zhan,Hua Yan,Xianghao Kong,Xiahua Zuo 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.8
A new enhanced drainage parallel (EDP) flow field was designed that not only enhances under-rib convectionbut also enables a more uniform distribution of hydrogen and oxygen. Through the optimization of the model, weestablished the influence of the flow field size, relative humidity, and stoichiometric ratio on cell performance. Whenthe rib width is reduced, the maximum power density is improved. Compared with the parallel flow field and serpentineflow field, the maximum power density of the EDP flow field was increased by 69.4% and 7.9%, respectively. Under optimal conditions, the net power of the EDP flow field can reach 0.56 W/cm2. In the single-cell test, the maximumpower density of the EDP flow field can reach 1.19 W/cm2. This implies that the EDP flow field has potentialapplication of proton exchange membrane fuel cells.