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  1. Article ; Online: The Impact of Scientific and Technological Innovation on High-Quality Economic Development in the Yangtze River Delta Region

    Jianyu Han / Min He / Honglin Xie / Tao Ding

    Sustainability, Vol 14, Iss 14346, p

    2022  Volume 14346

    Abstract: According to the new development pattern, implementing the development strategy driven by scientific and technological innovation (STI) is an important measure for each region to improve the quality of regional economic development. Exploring the effect ... ...

    Abstract According to the new development pattern, implementing the development strategy driven by scientific and technological innovation (STI) is an important measure for each region to improve the quality of regional economic development. Exploring the effect of STI on the regional high-quality economic development (HED) is helpful to break the bottleneck and enhance the momentum of regional economic development. The Yangtze River Delta, located in the east coast of China, is the frontier of STI and economic development. Based on theoretical analysis, this paper uses the entropy method to calculate the STI index of the Yangtze River Delta from 2009 to 2018, and systematically investigates the impact of STI on HED in Yangtze River Delta by using two-way fixed effect, spatial Dubin model, panel threshold model and moderation effect model. The research finds that: First, under the control of other factors, STI has significantly promoted the HED of Yangtze River Delta region, while it also produces a spatial spillover effect. Second, the impact of STI on HED in the Yangtze River Delta has a double threshold effect based on the advanced industrial structure. Third, the analysis of adjustment mechanism shows that the scale of higher education has a positive adjustment effect in the relationship between STI and HED. Fourth, with the further analysis of regional heterogeneity, the economic effect of STI in central cities is significantly greater than that in noncentral cities. These findings provide theory-based direction and policy inspiration for improving the institutional mechanism of STI and accelerating the promotion of HED in Yangtze River Delta region.
    Keywords Yangtze River Delta ; STI ; HED ; spatial measurement model ; threshold model ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
    Subject code 910
    Language English
    Publishing date 2022-11-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Electron-Level Mechanistic Insights into Ce Doping for Enhanced Efficiency Degradation of Bisphenol A under Visible Light Irradiation

    Qi Zeng / Chu-Ya Wang / Bo-Xing Xu / Jianyu Han / Xin Fang / Guangcan Zhu

    Nanomaterials, Vol 12, Iss 8, p

    2022  Volume 1382

    Abstract: Bismuth oxybromide (BiOBr), with its special layered structure, is known to have potential as a visible-light-driven photocatalyst. However, the rapid recombination and short lifetime of the photogenerated carriers of BiOBr restrict its photocatalytic ... ...

    Abstract Bismuth oxybromide (BiOBr), with its special layered structure, is known to have potential as a visible-light-driven photocatalyst. However, the rapid recombination and short lifetime of the photogenerated carriers of BiOBr restrict its photocatalytic efficiency for the degradation of organic pollutants. Given the similar ionic size of Ce and Bi, Ce atoms might be easily introduced into the crystal of BiOBr to tailor its band structure. In this study, Ce doped BiOBr (Ce-BiOBr) samples with different percentages of Ce contents were prepared via a hydrothermal method. The intrinsic photocatalytic efficiency of Ce 0.2 -BiOBr for the degradation of bisphenol A (BPA) was 3.66 times higher than that of pristine BiOBr under visible light irradiation. The mechanism of Ce-doping modification for the enhanced photocatalytic performance was demonstrated based on a series of experiments and DFT calculation. The narrowed bandgap, the enhanced charge separation efficiency and Ce-doping energy level contributed to the remarkable photocatalytic performance of Ce-BiOBr.
    Keywords bismuth oxybromide (BiOBr) ; Ce-doping modification ; doping energy level ; visible light ; bisphenol A (BPA) ; Chemistry ; QD1-999
    Subject code 500
    Language English
    Publishing date 2022-04-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article: Hydrogen bonding improved atom transfer radical polymerization of methyl methacrylate with a glycerol/1,3‐dimethyl‐2‐imidazolidinone green system

    Tian, Mengying / Jirong Wang / Jun Zhou / Jianyu Han / Feipeng Du / Zhigang Xue

    Journal of polymer science. 2018 Feb. 1, v. 56, no. 3

    2018  

    Abstract: 1,3‐Dimethyl‐2‐imidazolidinone (DMI) was used as an efficient media in iron‐catalyzed atom transfer radical polymerizations (ATRPs) and AGET ATRPs of MMA. Both of these systems presented relatively high reaction rate and well controllability even ...

    Abstract 1,3‐Dimethyl‐2‐imidazolidinone (DMI) was used as an efficient media in iron‐catalyzed atom transfer radical polymerizations (ATRPs) and AGET ATRPs of MMA. Both of these systems presented relatively high reaction rate and well controllability even in the presence of limited amount of DMI. In iron‐catalyzed AGET ATRPs, a variety of alcohols were served as reducing agents and all the polymerizations behaved excellent activity features, especially for glycerol. The hydrogen‐bond interaction between DMI and glycerol was also studied, which may release the reducing ability of glycerol by decreasing the viscosity of glycerol similar to deep eutectic solvents (DESs). © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 282–289
    Keywords glycerol ; hydrogen bonding ; polymerization ; polymers ; reducing agents ; solvents ; viscosity
    Language English
    Dates of publication 2018-0201
    Size p. 282-289.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ISSN 0887-624X
    DOI 10.1002/pola.28893
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Initiator‐free atom transfer radical polymerization of methyl methacrylate based on FeBr3(PPh3)n system

    Yang, Danfeng / Jianyu Han / Jirong Wang / Mohd Yusuf Khan / Xiaolin Xie / Zhigang Xue

    Journal of polymer science. 2017 Dec. 1, v. 55, no. 23

    2017  

    Abstract: A tricomponent system, constituting monomer (methyl methacrylate, MMA), higher oxidation state transition‐metal catalyst (FeBr₃) and a ligand (triphenylphosphine, PPh₃), MMA/FeBr₃/PPh₃ system without external initiator (alkyl halide) has been ... ...

    Abstract A tricomponent system, constituting monomer (methyl methacrylate, MMA), higher oxidation state transition‐metal catalyst (FeBr₃) and a ligand (triphenylphosphine, PPh₃), MMA/FeBr₃/PPh₃ system without external initiator (alkyl halide) has been studied extensively with different spectroscopic analyses. To figure out the mechanism, a series of explicit model reactions were conducted with a molar ratio of [MMA]₀/[FeBr₃]₀/[PPh₃]₀ = 200/1/n (n = 0.1–3.0) at 80 °C, and the corresponding polymerization behaviors were investigated. Combined with theoretical deduction and spectroscopic evidences, the composition of the in‐situ generated initiators was gradually confirmed, which were redox products of FeBr₃ and PPh₃. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 3842–3850
    Keywords catalysts ; ligands ; models ; oxidation ; polymerization ; polymers ; spectral analysis
    Language English
    Dates of publication 2017-1201
    Size p. 3842-3850.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ISSN 0887-624X
    DOI 10.1002/pola.28768
    Database NAL-Catalogue (AGRICOLA)

    Full text online

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    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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