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165 results on '"Wang, Haidan"'

43. Gut commensalParabacteroides distasonisalleviates inflammatory arthritis

Author

Sun, Haijian, primary, Guo, Yunke, additional, Wang, Haidan, additional, Yin, Ailing, additional, Hu, Jing, additional, Yuan, Tianjie, additional, Zhou, Shuxin, additional, Xu, Weichen, additional, Wei, Peng, additional, Yin, Shusheng, additional, Liu, Panru, additional, Guo, Xi, additional, Tang, Yizhao, additional, Yan, Yujiao, additional, Luo, Zichen, additional, Wang, Majie, additional, Liang, Qingqing, additional, Wu, Peng, additional, Zhang, Aifeng, additional, Zhou, Zhuxiu, additional, Chen, Yueyue, additional, Li, Yongming, additional, Li, Jing, additional, Shan, Jinjun, additional, and Zhou, Wei, additional

Published
2023
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48. Toward Deepening Cultural and Language Understanding: The Design and Practice of a Hybrid Business Chinese Course

Author

Wang, Haidan

Abstract

This article introduces an ongoing effort to use Internet resources in an Advanced Business Chinese for Professionals (ABCP) course in order to deepen learners' language and cultural understanding. This course blends face-to-face (F2F) classroom instruction and online communications using Brix, an online course management system developed by the University of Hawai'i. This article starts with the rationale and necessity of a hybrid course for ABCP and presents an overview of a traditional F2F business Chinese class with its strengths and weaknesses. Following the overview, this article outlines the design of a hybrid environment for this course, detailing its structure, content, and instructional processes. Illustrations of the F2F and online alternations in classroom teaching, online tasks with instructor's guidance and feedback, and online forum discussion for each unit are offered. Experiences gained in this process regarding instructional intervention, projected learners' learning outcomes, and interactive peer learning through the Internet will also be shared. Reflections and suggestions on aspects that may impact the success of this approach are proposed for future improvement in an ideal hybrid business language course.

Published
2014
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49. Colorimetric assay of NO2−and Hg2+through on–off strategy of the Cu, Mo-CDs nanozyme

Author

Pu, Hongmei, Cui, Yifan, Wang, Haidan, Yu, Lijuan, Yang, Dezhi, Yang, Yaling, and Li, Hong

Abstract

Until now, there have been many reports on the regulation of inorganic metal ions on the catalytic activity of nanozymes, but few reports on the regulation of anions (such as NO2−) on enzyme activity. In this work, a copper-molybdenum doped carbon dots (Cu, Mo-CDs) with peroxidase-like (POD) activity was synthesized by simple one-step microwave digestion method. The Cu, Mo-CDs + NO2−system can promote 3,3′,5,5′-tetramethylbenzidine (TMB) oxidizing to blue oxidative product (oxTMB) due to the formation of ∙NO2free radical. While Hg2+was introduced into the system, the POD-like activity of Cu, Mo-CDs + NO2−system was inhibited due to the strong interaction and the electron transfer between Cu, Mo-CDs and Hg2+. The formation of ∙NO2and the electron transfer capability of Cu, Mo-CDs + Hg2+were confirmed through ESR spectra and FMN experiments. The bioenzyme-free colorimetric assay based on Cu, Mo-CDs nanozyme is used for detection of NO2−and Hg2+, showing lower detection limit (LOD) of 1.63 µg/L for NO2−, 0.13 µg/L for Hg2+, respectively and good recovery from 90.79 to 108.90%. The work paves a new way to design a nanozyme-based colorimetric protocol for traces NO2−and Hg2+residues in food analysis.

Published
2024
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