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  1. Article: Variation characteristics of extreme climate events in Southwest China from 1961 to 2017.

    Wang, Chunxue / Chen, Chao / Zhang, Shunqian / Ma, Zhenfeng / Pang, Yanmei

    Heliyon

    2023  Volume 9, Issue 9, Page(s) e19648

    Abstract: ... ...

    Abstract Climate
    Language English
    Publishing date 2023-08-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2023.e19648
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Dinitrogen Activation and Functionalization Affording Chromium Diazenido and Hydrazido Complexes.

    Wang, Gao-Xiang / Yin, Zhu-Bao / Wei, Junnian / Xi, Zhenfeng

    Accounts of chemical research

    2023  

    Abstract: ConspectusThe activation and functionalization of ... ...

    Abstract ConspectusThe activation and functionalization of N
    Language English
    Publishing date 2023-11-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1483291-4
    ISSN 1520-4898 ; 0001-4842
    ISSN (online) 1520-4898
    ISSN 0001-4842
    DOI 10.1021/acs.accounts.3c00476
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Unusual Electronic Structures of an Electron Transfer Series of [Cr(μ-η

    Wang, Gao-Xiang / Shan, Chunxiao / Chen, Wang / Wu, Botao / Zhang, Peng / Wei, Junnian / Xi, Zhenfeng / Ye, Shengfa

    Angewandte Chemie (International ed. in English)

    2024  Volume 63, Issue 13, Page(s) e202315386

    Abstract: In dinitrogen ( ... ...

    Abstract In dinitrogen (N
    Language English
    Publishing date 2024-02-22
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2011836-3
    ISSN 1521-3773 ; 1433-7851
    ISSN (online) 1521-3773
    ISSN 1433-7851
    DOI 10.1002/anie.202315386
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  4. Article ; Online: From service capacity to spatial equity: Accurately and comprehensively evaluating urban park green space distribution under multi-trips mode.

    Zhou, Yanhai / Xie, Huili / Liu, Xingzhao / Wang, Xinke / Wang, Zhenfeng

    PloS one

    2024  Volume 19, Issue 1, Page(s) e0296629

    Abstract: The health of city inhabitants is considerably impacted by the urban park green spaces (UPGS). Existing studies lack an assessment of the UPGS equity from different perspectives and are limited to poor accuracy. This study reviews the definition and ... ...

    Abstract The health of city inhabitants is considerably impacted by the urban park green spaces (UPGS). Existing studies lack an assessment of the UPGS equity from different perspectives and are limited to poor accuracy. This study reviews the definition and determination methods of UPGS, as well as UPGS accessibility and spatial equity related studies. Then, a spatial equity evaluation system is established from the dimensions of equity in providing UPGS services and equity in supply and demand matching. This study extrapolates from micro to macro analysis using network big data and census data to pinpoint the population down to the building level in the main urban area of Fuzhou City, China. The network analysis method, improved Gaussian floating catchment area method, Gini coefficient, and Lorenz curve measurement help to evaluate UPGS service euquity, explore the similarities and differences of UPGS fairness under different travel modes. It also helps to understand the service relationship between UPGS service and population demand under objective space, and to pinpoint the weak supply area using the locational entropy method. The results show that: (1) The overall accessibility and per capita accessibility show similar spatial distribution patterns under different travel modes, which are "high around and low in the middle" and "centered on the Minjiang River and dispersed to the north and south, respectively" in study area. (2) The supply of UPGS services in Fuzhou is relatively adequate and at a relatively equity level, while varies in the allocation of UPGS services among sub-districts. The spatial equity of different traveling modes varies widely. (3) The sub-districts on the periphery of the study area should be subject to increased UPGS and improvements to the road network and public infrastructure. Sub-district with high population density and old neighborhoods should implement micro-renewal and build community parks. Our study presents a new idea for spatial equity research.
    MeSH term(s) Humans ; Parks, Recreational ; Urban Population ; Cities ; China ; Travel
    Language English
    Publishing date 2024-01-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0296629
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  5. Article: Editorial: The physiology, molecular biology and biochemistry in ripening and stored fruit.

    Li, Chunhong / Cao, Shifeng / Yang, Zhenfeng / Watkins, Christopher B / Wang, Kaituo

    Frontiers in plant science

    2023  Volume 14, Page(s) 1296816

    Language English
    Publishing date 2023-09-29
    Publishing country Switzerland
    Document type Editorial
    ZDB-ID 2613694-6
    ISSN 1664-462X
    ISSN 1664-462X
    DOI 10.3389/fpls.2023.1296816
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  6. Article ; Online: Correction to: Molecular characterization of a novel amalgavirus infecting lilium spp. in China.

    Yuan, Zhihao / Li, Zhenfeng / Lu, Yuexia / Cao, Mengji / Hong, Ni / Wang, Guoping / Cai, Li

    Archives of virology

    2023  Volume 168, Issue 8, Page(s) 207

    Language English
    Publishing date 2023-07-18
    Publishing country Austria
    Document type Published Erratum
    ZDB-ID 7491-3
    ISSN 1432-8798 ; 0304-8608
    ISSN (online) 1432-8798
    ISSN 0304-8608
    DOI 10.1007/s00705-023-05826-2
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    In stock of ZB MED Cologne/Königswinter

    Ud II Zs.110: Show issues Location:
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  7. Article ; Online: Tooth CT Image Segmentation Method Based on the U-Net Network and Attention Module

    Sha Tao / Zhenfeng Wang

    Computational and Mathematical Methods in Medicine, Vol

    2022  Volume 2022

    Abstract: Traditional image segmentation methods often encounter problems of low segmentation accuracy and being time-consuming when processing complex tooth Computed Tomography (CT) images. This paper proposes an improved segmentation method for tooth CT images. ... ...

    Abstract Traditional image segmentation methods often encounter problems of low segmentation accuracy and being time-consuming when processing complex tooth Computed Tomography (CT) images. This paper proposes an improved segmentation method for tooth CT images. Firstly, the U-Net network is used to construct a tooth image segmentation model. A large number of feature maps in downsampling are supplemented to downsampling to reduce information loss. At the same time, the problem of inaccurate image segmentation and positioning is solved. Then, the attention module is introduced into the U-Net network to increase the weight of important information and improve the accuracy of network segmentation. Among them, subregion average pooling is used instead of global average pooling to obtain spatial features. Finally, the U-Net network combined with the improved attention module is used to realize the segmentation of tooth CT images. And based on the image collection provided by West China Hospital for experimental demonstration, compared with other algorithms, our method has better segmentation performance and efficiency. The contours of the teeth obtained are clearer, which is helpful to assist the doctor in the diagnosis.
    Keywords Computer applications to medicine. Medical informatics ; R858-859.7
    Subject code 006
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Hindawi Limited
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Syntheses and Characterizations of Hetero-Bimetallic Chromium-Dinitrogen Transition-Metal Complexes.

    Wang, Xueli / Wang, Yixi / Wu, Yue / Wang, Gao-Xiang / Wei, Junnian / Xi, Zhenfeng

    Inorganic chemistry

    2023  Volume 62, Issue 45, Page(s) 18641–18648

    Abstract: In the domain of ... ...

    Abstract In the domain of N
    Language English
    Publishing date 2023-10-31
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.3c02944
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  9. Article ; Online: Tooth CT Image Segmentation Method Based on the U-Net Network and Attention Module.

    Tao, Sha / Wang, Zhenfeng

    Computational and mathematical methods in medicine

    2022  Volume 2022, Page(s) 3289663

    Abstract: Traditional image segmentation methods often encounter problems of low segmentation accuracy and being time-consuming when processing complex tooth Computed Tomography (CT) images. This paper proposes an improved segmentation method for tooth CT images. ... ...

    Abstract Traditional image segmentation methods often encounter problems of low segmentation accuracy and being time-consuming when processing complex tooth Computed Tomography (CT) images. This paper proposes an improved segmentation method for tooth CT images. Firstly, the U-Net network is used to construct a tooth image segmentation model. A large number of feature maps in downsampling are supplemented to downsampling to reduce information loss. At the same time, the problem of inaccurate image segmentation and positioning is solved. Then, the attention module is introduced into the U-Net network to increase the weight of important information and improve the accuracy of network segmentation. Among them, subregion average pooling is used instead of global average pooling to obtain spatial features. Finally, the U-Net network combined with the improved attention module is used to realize the segmentation of tooth CT images. And based on the image collection provided by West China Hospital for experimental demonstration, compared with other algorithms, our method has better segmentation performance and efficiency. The contours of the teeth obtained are clearer, which is helpful to assist the doctor in the diagnosis.
    MeSH term(s) Algorithms ; Attention ; Humans ; Image Processing, Computer-Assisted ; Neural Networks, Computer ; Tomography, X-Ray Computed
    Language English
    Publishing date 2022-08-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2252430-7
    ISSN 1748-6718 ; 1748-670X ; 1027-3662
    ISSN (online) 1748-6718
    ISSN 1748-670X ; 1027-3662
    DOI 10.1155/2022/3289663
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 6373: Show issues Location:
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  10. Article: The Effect of Fe/Al Ratio and Substrate Hardness on Microstructure and Deposition Behavior of Cold-Sprayed Fe/Al Coatings.

    Wang, You / Deng, Nan / Tong, Zhenfeng / Zhou, Zhangjian

    Materials (Basel, Switzerland)

    2023  Volume 16, Issue 2

    Abstract: Fe/Al composite coatings with compositions of Fe-25 wt.% Al, Fe-50 wt.% Al and Fe-75 wt.% Al were deposited on pure Al and P91 steel plates by a cold spray, respectively. The microstructure of the cross-section of the fabricated coatings was ... ...

    Abstract Fe/Al composite coatings with compositions of Fe-25 wt.% Al, Fe-50 wt.% Al and Fe-75 wt.% Al were deposited on pure Al and P91 steel plates by a cold spray, respectively. The microstructure of the cross-section of the fabricated coatings was characterized by SEM and EDX. The bonding strength between the coatings and substrates was measured and analyzed. The effects of the Fe/Al ratios and substrate hardness on the deposition behavior were investigated. It was interesting to find fragmented zones in all fabricated coatings, which were composed of large integrated Al particles and small fragmented Al particles. Meanwhile, the fraction of fragmented zones varied with the fraction of the actual Fe/Al ratio. An Fe/Al ratio of 50/50 appeared to be an optimized ratio for the higher bonding strength of coatings. The in situ hammer effect caused by larger and harder Fe particles played an important role in the cold spray process. The substrate with the higher hardness strengthened the in situ hammer effect and further improved the bonding strength.
    Language English
    Publishing date 2023-01-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma16020878
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