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  1. Article ; Online: Risk assessment of geohazards along Cheng-Kun railway using fuzzy AHP incorporated into GIS

    Qian Zheng / Hai-Min Lyu / Annan Zhou / Shui-Long Shen

    Geomatics, Natural Hazards & Risk, Vol 12, Iss 1, Pp 1508-

    2021  Volume 1531

    Abstract: This article presents a case study on the risk assessment of geohazards along Cheng-Kun ... railway line. Cheng-Kun railway passes through a region of highly varied elevation and faults and the operation ... of Cheng-Kun railway has been frequently interrupted owing to geological disasters. A hybrid method via ...

    Abstract This article presents a case study on the risk assessment of geohazards along Cheng-Kun railway line. Cheng-Kun railway passes through a region of highly varied elevation and faults and the operation of Cheng-Kun railway has been frequently interrupted owing to geological disasters. A hybrid method via integrating triangular fuzzy number (TFN) and the analytic hierarchy process (AHP) (here after simply call TFN-AHP) into a geographic information system (GIS) is employed in this study to perform the geohazards assessment. The assessment results showed that TFN-AHP with GIS can effectively predict the distribution of geohazards risk in the study region within the last 10 years. The results also showed that the TFN-AHP method is more efficient in identifying high-risk areas compared with using original AHP. Based on the assessment results, prospective management measures to prevent risk are recommended.
    Keywords risk assessment ; railway management ; fuzzy ahp ; gis ; sustainability recommendation ; Environmental technology. Sanitary engineering ; TD1-1066 ; Environmental sciences ; GE1-350 ; Risk in industry. Risk management ; HD61
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Taylor & Francis Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article: Effect of extraction on the acoustic vibrational properties of Picea jezoensis var. microsperma (Lindl.) W.C.Cheng & L.K.Fu

    Miao, Yuanyuan / Li, Rui / Qian, Xiaodong / Yin, Yuxue / Yang, Yang / Jin, Xianglong / Lin, Bin / Liu, Yixing / Liu, Zhenbo

    Annals of forest science. 2021 Mar., v. 78, no. 1

    2021  

    Abstract: ... Lindl.) W.C.Cheng & L.K.Fu) were improved by extraction treatment with deionized water, dichloromethane ...

    Abstract • KEY MESSAGE : The specific dynamic elastic modulus, acoustic radiation, logarithmic decrement, sound transmission parameter, and acoustic conversion efficiency of spruce wood (Picea jezoensis var. microsperma (Lindl.) W.C.Cheng & L.K.Fu) were improved by extraction treatment with deionized water, dichloromethane, benzyl alcohol, and ethanol. A larger improvement was achieved after extraction with benzoyl alcohol and dichloromethane extraction than by using ethanol and deionized water. • CONTEXT : It is necessary to improve the acoustic vibrational properties of wood to solve the problem of resource shortage of wood with excellent acoustic vibrational properties for the soundboards of musical instruments and to improve the use value of wood. • AIMS : The effects of extraction treatment with deionized water, dichloromethane, benzyl alcohol, and ethanol on the acoustic vibrational properties of spruce wood were evaluated. • METHODS : After the acoustic vibrational properties of untreated wood samples were measured using the free-free flexural vibration test method with a fast Fourier transform spectrum analyzer (FFT, CF-5220Z), extraction treatment of the wood samples was separately performed with deionized water, dichloromethane, benzyl alcohol, and ethanol for 15 days at room temperature and pressure, followed by drying. The acoustic vibrational properties of the treated wood samples were then measured, and the effect of extraction treatment on the acoustic vibrational properties was analyzed. • RESULTS : The increase in the specific dynamic elastic modulus was highest (14.5%) after the benzyl alcohol treatment. The acoustic radiation clearly improved after the ethanol treatment (18.1%). The acoustic impedance of the wood treated by dichloromethane extraction decreased significantly (−4.35%), while the logarithmic decrement was significantly reduced (−52.0%) by benzyl alcohol treatment. From the viewpoint of energy utilization, with benzyl alcohol treatment, the acoustic conversion efficiency and transmission parameter increased by 124% and 125%, respectively. • CONCLUSION : The degree of improvement in the acoustic vibrational properties of wood differed depending on the solvent used. Greater improvement was observed after extraction with benzoyl alcohol and dichloromethane as compared to ethanol and deionized water.
    Keywords Picea jezoensis ; acoustic impedance ; ambient temperature ; benzyl alcohol ; energy ; ethanol ; forests ; methylene chloride ; modulus of elasticity ; solvents ; vibration ; wood
    Language English
    Dates of publication 2021-03
    Size p. 24.
    Publishing place Springer Paris
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 1464978-0
    ISSN 1297-966X ; 1286-4560
    ISSN (online) 1297-966X
    ISSN 1286-4560
    DOI 10.1007/s13595-021-01048-1
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 2166: Show issues

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  3. Article: Characterization of the complete chloroplast genome sequence of Tsuga longibracteata W. C. Cheng (Pinaceae)

    Chen, Lin / Li, Longna / Yang, Guodong / Qian, Huirong / Li, Mingzhi

    Conservation genetics resources. 2019 June, v. 11, no. 2

    2019  

    Abstract: Tsuga longibracteata W. C. Cheng is an endangered coniferous species endemic to China. Here ...

    Abstract Tsuga longibracteata W. C. Cheng is an endangered coniferous species endemic to China. Here, the complete chloroplast genome of this species was assembled and characterized from high-throughput sequencing data. The circular genome of T. longibracteata was 120,900 bp in size, with a pair of inverted repeat regions of 34,239 bp. The chloroplast genome contains 127 genes including 88 protein-coding genes (PCGs), 34 tRNAs and five rRNAs. Most of genes occurred in a single copy, while 29 PCGs, 11 tRNAs and one rRNA are totally duplicated. The overall AT content of the genome is 60.6%. A phylogenetic tree reconstructed by 20 gymnosperm chloroplast genomes reveals all the species of Pinaceae formed a monophyletic clade with high resolution value and T. longibracteata is most related with T. chinensis. This study will pave the way for future research to understand the genomic information and conservation of this endangered endemic relict plant.
    Keywords Tsuga chinensis ; chloroplast genome ; genes ; genomics ; high-throughput nucleotide sequencing ; monophyly ; nucleotide sequences ; ribosomal RNA ; transfer RNA ; China
    Language English
    Dates of publication 2019-06
    Size p. 117-120.
    Publishing place Springer Netherlands
    Document type Article
    ZDB-ID 2508018-0
    ISSN 1877-7260 ; 1877-7252
    ISSN (online) 1877-7260
    ISSN 1877-7252
    DOI 10.1007/s12686-017-0974-z
    Database NAL-Catalogue (AGRICOLA)

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  4. Book: Hua Tuo yan jiu ji cheng

    Qian, Chaochen

    (Zhonghua gu dai ming yi ming zhu yan jiu ji cheng)

    2008  

    Author's details Qian Chaochen, Wen Changlu zhu bian
    Series title Zhonghua gu dai ming yi ming zhu yan jiu ji cheng
    MeSH term(s) Medicine, Chinese Traditional
    Language Chinese
    Size 2, 11, 1432 p., [2] p. of plates :, ill. (some col.) ;, 26 cm.
    Edition Di 1 ban.
    Publisher Zhong yi gu ji chu ban she
    Publishing place Beijing
    Document type Book
    ISBN 9787801745361 ; 7801745361
    Database Catalogue of the US National Library of Medicine (NLM)

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  5. Article ; Online: Simultaneous Determination of Eight Alkaloids in Rat Plasma by UHPLC-MS/MS after Oral Administration of Coptis deltoidea C. Y. Cheng et Hsiao and Coptis chinensis Franch.

    Liu, Lu / Wang, Zhi-Bin / Song, Yang / Yang, Jing / Wu, Li-Jun / Yang, Bing-You / Wang, Qiu-Hong / Wang, Li-Qian / Wang, Ru-Xuan / Yang, Chun-Juan

    Molecules (Basel, Switzerland)

    2016  Volume 21, Issue 7

    Abstract: ... components in Coptis deltoidea C. Y. cheng et Hsiao (CCY) and Coptis chinensis Franch (CF ...

    Abstract A ultra-high performance liquid chromatography-electrospray ionization tandem mass spectrometry (UHPLC-ESI-MS/MS) method was successfully developed and validated for the identification and determination of eight alkaloids: tetrahydropalmatine (A); palmatine (B); magnoflorine (C); columbamine (D); berberine (E); worenine (F); berberrubine (G) and coptisine (H) in rat plasma, which are the active components in Coptis deltoidea C. Y. cheng et Hsiao (CCY) and Coptis chinensis Franch (CF). The chromatographic separation of analytes was successfully achieved on an Agilent SB-C18 column (1.8 µm, 150 mm × 2.1 mm) using a programme with a mobile phase consisting of acetonitrile and water containing 0.3% acetic acid at a flow rate of 0.25 mL/min. The analytes were detected with a triple quadrupole tandem MS in multiple reaction monitoring (MRM) mode and an electrospray ionization (ESI) source in positive mode. The validated method showed good linearity over a wide concentration range (r² > 0.991), and lower limits of quantification (LLOQ) less than 1.1 ng/mL for all analytes, and matrix effects ranged from 85.2% to 106.8%. The mean extraction recoveries were no less than 86.4%, and the precision and accuracy were within the acceptable limits. All analytes were proven to be stable during sample storage and analysis procedures. The method validation results demonstrated that the proposed method was sensitive, specific, and reliable, which could lay a foundation for the pharmacokinetic study of eight analytes after oral administration of CCY and CF in subsequent studies.
    MeSH term(s) Administration, Oral ; Alkaloids/administration & dosage ; Alkaloids/chemistry ; Alkaloids/pharmacokinetics ; Animals ; Chromatography, High Pressure Liquid ; Drug Stability ; Drugs, Chinese Herbal/administration & dosage ; Drugs, Chinese Herbal/chemistry ; Drugs, Chinese Herbal/pharmacokinetics ; Male ; Rats ; Reproducibility of Results ; Sensitivity and Specificity ; Tandem Mass Spectrometry
    Chemical Substances Alkaloids ; Drugs, Chinese Herbal
    Language English
    Publishing date 2016-07-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules21070913
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.MO 81: Show issues

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  6. Book: Cheng shi yi liao fu wu ti xi zheng he de li lun yu shi zheng yan jiu

    Qian, Dongfu

    (Ren wen yi xue yu wei sheng guan li cong shu)

    2014  

    Author's details Qian Dongfu zhu
    Series title Ren wen yi xue yu wei sheng guan li cong shu
    MeSH term(s) Urban Health Services
    Keywords China
    Language Chinese
    Size ix, 232 pages :, illustrations.
    Edition Di 1 ban.
    Document type Book
    ISBN 9787030408037 ; 7030408039
    Database Catalogue of the US National Library of Medicine (NLM)

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  7. Book: Zhang Zihe yan jiu ji cheng

    Qian, Chaochen

    (Zhonghua gu dai ming yi ming zhu yan jiu ji cheng ; 5)

    2006  

    Author's details Qian Chaochen, Wen Changlu zhu bian
    Series title Zhonghua gu dai ming yi ming zhu yan jiu ji cheng ; 5
    MeSH term(s) Medicine, Chinese Traditional
    Language Chinese
    Size 1, 3, 11, 1120 :, ill. ;, 27 cm.
    Edition Di 1 ban.
    Publisher Zhong yi gu ji chu ban she
    Publishing place Beijing
    Document type Book
    ISBN 9787801744494 ; 7801744497
    Database Catalogue of the US National Library of Medicine (NLM)

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  8. Book: Sun Simiao yan jiu ji cheng

    Qian, Chaochen

    2006  

    Title translation Collection of studies on Sun Simiao.
    Author's details Qian Chaochen, Wen Changlu zhu bian
    MeSH term(s) Medicine, Chinese Traditional
    Language Chinese
    Size 2, 4, 13, 1486 p. :, ill. ;, 27 cm.
    Edition Di 1 ban.
    Publisher Zhong yi gu ji chu ban she
    Publishing place Beijing
    Document type Book
    ISBN 9787801744036 ; 7801744039
    Database Catalogue of the US National Library of Medicine (NLM)

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  9. Article ; Online: Simultaneous Determination of Eight Alkaloids in Rat Plasma by UHPLC-MS/MS after Oral Administration of Coptis deltoidea C. Y. Cheng et Hsiao and Coptis chinensis Franch

    Lu Liu / Zhi-Bin Wang / Yang Song / Jing Yang / Li-Jun Wu / Bing-You Yang / Qiu-Hong Wang / Li-Qian Wang / Ru-Xuan Wang / Chun-Juan Yang

    Molecules, Vol 21, Iss 7, p

    2016  Volume 913

    Abstract: ... components in Coptis deltoidea C. Y. cheng et Hsiao (CCY) and Coptis chinensis Franch (CF ...

    Abstract A ultra-high performance liquid chromatography-electrospray ionization tandem mass spectrometry (UHPLC-ESI-MS/MS) method was successfully developed and validated for the identification and determination of eight alkaloids: tetrahydropalmatine (A); palmatine (B); magnoflorine (C); columbamine (D); berberine (E); worenine (F); berberrubine (G) and coptisine (H) in rat plasma, which are the active components in Coptis deltoidea C. Y. cheng et Hsiao (CCY) and Coptis chinensis Franch (CF). The chromatographic separation of analytes was successfully achieved on an Agilent SB-C18 column (1.8 µm, 150 mm × 2.1 mm) using a programme with a mobile phase consisting of acetonitrile and water containing 0.3% acetic acid at a flow rate of 0.25 mL/min. The analytes were detected with a triple quadrupole tandem MS in multiple reaction monitoring (MRM) mode and an electrospray ionization (ESI) source in positive mode. The validated method showed good linearity over a wide concentration range (r2 > 0.991), and lower limits of quantification (LLOQ) less than 1.1 ng/mL for all analytes, and matrix effects ranged from 85.2% to 106.8%. The mean extraction recoveries were no less than 86.4%, and the precision and accuracy were within the acceptable limits. All analytes were proven to be stable during sample storage and analysis procedures. The method validation results demonstrated that the proposed method was sensitive, specific, and reliable, which could lay a foundation for the pharmacokinetic study of eight analytes after oral administration of CCY and CF in subsequent studies.
    Keywords alkaloids ; UHPLC-MS/MS ; method development ; rat plasma ; Organic chemistry ; QD241-441
    Subject code 540
    Language English
    Publishing date 2016-07-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Book ; Online: Handbook of Teaching Competency Development in Higher Education

    Cheng, Jiangang / Han, Wei / Zhou, Qian / Wang, Shuyan / Zhou, Qian

    2024  

    Keywords Teacher training ; Higher & further education, tertiary education ; Education ; Teacher Professional Development in Higher Education ; Teaching Competencies in Higher Education ; Teaching Competencies in the Information Age ; Structure of Teaching Competencies ; Standard Framework of Teaching Competencies in Higher Education ; Assessment of Teaching Competencies ; Government's Efforts in Improving Teaching Competencies ; Laws and Policies for Teaching Competency Improvement ; Teaching Competence Standards and Norms ; Framework for Improving Teaching Competency in Higher Education ; Teacher Development Model ; Good Practice in Higher Education
    Language English
    Size 1 electronic resource (158 pages)
    Publisher Springer Nature
    Publishing place Singapore
    Document type Book ; Online
    Note English
    HBZ-ID HT030613116
    ISBN 9789819962723 ; 9819962722
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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