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  1. Book: Zhan zheng, she hui yu yi liao

    Zhang, Ling

    kang zhan shi qi Sichuan gong gong wei sheng jian she yan jiu

    2015  

    Author's details Zhang Ling zhu
    MeSH term(s) Public Health Administration/history ; World War II ; History, 20th Century
    Keywords China
    Language Chinese
    Size 2, 231 pages :, illustrations, map ;, 24 cm
    Edition Di 1 ban.
    Document type Book
    ISBN 9787516161944 ; 7516161942
    Database Catalogue of the US National Library of Medicine (NLM)

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  2. Book: Bian jiang min zu she hui ai zi bing liu xing xian zhuang, fa zhan qu shi yu she hui kong zhi yan jiu

    Zhang, Jinpeng

    Bianjiang minzushehui aizibing liuxingxianzhuang fazhanqushi yu shehuikongzhi yanjiu

    (Yunnan min zu da xue xue shu wen ku)

    2012  

    Title variant Bianjiang minzushehui aizibing liuxingxianzhuang fazhanqushi yu shehuikongzhi yanjiu
    Author's details Zhang Jinpeng zhu
    Series title Yunnan min zu da xue xue shu wen ku
    MeSH term(s) Acquired Immunodeficiency Syndrome/ethnology ; Minority Groups
    Keywords China
    Language Chinese
    Size 4, 5, 342 p. :, ill.
    Edition Di 1 ban.
    Publisher Zhongguo she hui ke xue chu ban she
    Publishing place Beijing
    Document type Book
    ISBN 9787500492399 ; 7500492391
    Database Catalogue of the US National Library of Medicine (NLM)

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  3. Book: Zhongguo hong shi zi hui chu qi fa zhan zhi yan jiu

    Zhang, Jianqiu

    2007  

    Institution Chinese Red Cross Society
    Author's details Zhang Jianqiu zhu
    MeSH term(s) Red Cross/history ; History, 20th Century
    Keywords China
    Language Chinese
    Size 4, 3, 316 p. ;, 21 cm.
    Edition Beijing di 1 ban.
    Publisher Zhonghua shu ju
    Publishing place Beijing Shi
    Document type Book
    ISBN 9787101050158 ; 7101050158
    Database Catalogue of the US National Library of Medicine (NLM)

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  4. Article ; Online: A new method for estimating ore grade based on sample length weighting.

    Liu, Zhan-Ning / Deng, Yang-Yang / Tian, Rui / Liu, Zhan-Hui / Zhang, Peng-Wei

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 6208

    Abstract: Estimation of ore grade is very important for the value evaluation of ore deposits, and it directly affects the development of mineral resources. To improve the accuracy of the inverse distance weighting (IDW) method in ore grade estimation and reduce ... ...

    Abstract Estimation of ore grade is very important for the value evaluation of ore deposits, and it directly affects the development of mineral resources. To improve the accuracy of the inverse distance weighting (IDW) method in ore grade estimation and reduce the smoothing effect of the IDW method in grade estimation, the weight calculation method involved in the IDW method was improved. The length parameter of the ore sample was used to calculate the weight of the IDW method. The length of the ore samples was used as a new factor of the weighting calculation. A new method of IDW integrated with sample length weighting (IDWW) was proposed. The grade estimation of Li, Al, and Fe in porcelain clay ore was used as a case study. A comparative protocol for grade estimation via the IDWW method was designed and implemented. The number of samples involved in the estimation, sample combination, sample grade distribution, and other factors affecting the grade estimation were considered in the experimental scheme. The grade estimation results of the IDWW and the IDW methods were used for comparative analysis of grades of the original and combined samples. The estimated results of the IDWW method were also compared with those of the IDW method. The deviation analysis of the estimated grade mainly included the minimum, maximum, mean, and coefficient of variation of the ore grade. The estimation effect of IDWW method was verified. The minimum deviations of the estimated grade of Li, Al, and Fe were between 9.129% and 59.554%. The maximum deviations were between 4.210 and 22.375%. The mean deviations were between - 1.068 and 7.187%. The deviations in the coefficient of variation were between 3.076 and 36.186%. The deviations in the maximum, minimum, mean, and coefficients of variation of the IDWW were consistent with those of the IDW, demonstrating the accuracy and stability of the IDWW method. The more the samples involved in the estimation, the greater the estimation deviations of IDW and IDWW methods. The estimated deviations of Li, Al, and Fe were affected by the shape of the grade distribution, when the same estimation parameters were used. The grade distribution pattern of the samples significantly influenced the grade estimation results. The IDWW method offers significant theoretical advantages and addresses the adverse effects of uneven sample lengths on the estimates. The IDWW method can effectively reduce the smoothing effect and improves the utilization efficiency of the original samples.
    Language English
    Publishing date 2023-04-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-33509-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Design, Synthesis and Characterization of Palladium-Functionalized Covalent Organic Framework and Its Application as Heterogeneous Catalysis for C-H Arylation of Azoles.

    Li, Wen-Jing / Chen, Yu-Xuan / Kang, Shi-Long / Mo, Li-Ping / Zhang, Zhan-Hui

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2023  Volume 29, Issue 44, Page(s) e202301310

    Abstract: A novel triazine-based covalent organic framework (TFPT-Bz COF) has been constructed by the condensation of 2,4,6-tris(5-formyl-2-pyridinoxy)-1,3,5-triazine (TFPT) and benzidine (BZ) with deep eutectic solvent (DES) as the reaction medium. After the ... ...

    Abstract A novel triazine-based covalent organic framework (TFPT-Bz COF) has been constructed by the condensation of 2,4,6-tris(5-formyl-2-pyridinoxy)-1,3,5-triazine (TFPT) and benzidine (BZ) with deep eutectic solvent (DES) as the reaction medium. After the introduction of Pd ions through strong coordination to TFPT-Bz COF matrix, the constructed TFPT-Bz COF/Pd composite exhibited excellent catalytic activity for C-H arylation of azoles with aryl halides in 2-methyltetrahydrofuran. The protocol allows the arylation of a variety of substituted azoles with diverse aryl halides in high to excellent yield. Moreover, the TFPT-Bz COF/Pd catalyst can be recycled several times without significantly reducing its activity.
    Language English
    Publishing date 2023-07-21
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478547-X
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.202301310
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Visible-Light-Mediated Oxidative Amidation of Aldehydes by Using Magnetic CdS Quantum Dots as a Photocatalyst.

    Xu, Ling / Zhang, Shuai-Zheng / Li, Wei / Zhang, Zhan-Hui

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2021  Volume 27, Issue 17, Page(s) 5483–5491

    Abstract: A magnetic CdS quantum dot ( ... ...

    Abstract A magnetic CdS quantum dot (Fe
    Language English
    Publishing date 2021-02-25
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478547-X
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.202005138
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

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  7. Book: Wei jin nan bei chao nong min zhan zheng shi liao hui bian

    Zhang, Zexian / Zhu, Dawei

    1980  

    Author's details Zhang ze xian, zhu da wei bian
    Language Chinese
    Size S. 445-852
    Edition Di 1 ban
    Publisher Zhong hua shu ju
    Publishing place Bei jing
    Document type Book
    Database Former special subject collection: coastal and deep sea fishing

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  8. Book: Wei jin nan bei chao nong min zhan zheng shi liao hui bian

    Zhang, Zexian / Zhu, Dawei

    1980  

    Author's details Zhang ze xian, zhu da wei bian
    Language Chinese
    Size 3, 41, 444 S
    Edition Di 1 ban
    Publisher Zhong hua shu ju
    Publishing place Bei jing
    Document type Book
    Database Former special subject collection: coastal and deep sea fishing

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  9. Book: Wei jin nan bei chao nong min zhan zheng shi liao hui bian

    Zhang, Zexian / Zhu, Dawei

    1980  

    Author's details Zhang ze xian, zhu da wei bian
    Keywords Peasant uprisings ; China
    Language Chinese
    Size 2 v. (3, 41, 780 p.), 21 cm
    Edition Di 1 ban
    Publisher Zhong hua shu ju
    Publishing place Bei jing
    Document type Book
    Note Includes bibliographical references (pages 846-852)
    Database Former special subject collection: coastal and deep sea fishing

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  10. Book: Tang wu dai nong min zhan zheng shi liao hui bian

    Zhang, Zexian

    1979  

    Author's details Zhang ze xian bian
    Language Chinese
    Size 2 v. (3, 18, 778 p.), 21 cm
    Edition Di 1 ban
    Publisher Zhong hua shu ju
    Publishing place Bei jing
    Document type Book
    Note Bibliography: p. 767-778
    Database Former special subject collection: coastal and deep sea fishing

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