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  1. Article ; Online: Analysis of human health effects under ozone exposure in the oasis area of Hetao Plain.

    Wang, Lanzhi / Ju, Tianzhen / Li, Bingnan / Xia, Xuhui / Huang, Cheng / Lv, Zhichao / Gu, Zhenrong

    Environmental monitoring and assessment

    2024  Volume 196, Issue 5, Page(s) 426

    Abstract: This article, based on OMI data products, utilizes spatial distribution, ozone-sensitive control areas, Pearson correlation methods, and the Ben-MAP model to study the changes in ozone column concentration from 2018 to 2022, along with the influencing ... ...

    Abstract This article, based on OMI data products, utilizes spatial distribution, ozone-sensitive control areas, Pearson correlation methods, and the Ben-MAP model to study the changes in ozone column concentration from 2018 to 2022, along with the influencing factors and the health of populations exposed to ozone. The findings suggest a spatial variation in the ozone column concentration within the study area, with an increasing trend observed from west to east and from south to north. Over time, the ozone column concentration exhibits an initial increase followed by a subsequent decrease, with the peak concentration observed in 2019 at 37.45 DU and the nadir recorded in 2022 at 33.10 DU. The monthly mean distribution exhibits an inverted V-shaped pattern during the warm season from April to September, with a peak in July (46.71 DU) and a trough in April (35.29 DU). The Hetao Plain Oasis area is primarily a NOx control area in sensitive control areas. The concentrations of O
    MeSH term(s) Humans ; Environmental Monitoring ; Mortality, Premature ; Ozone/toxicity ; Seasons ; Temperature
    Chemical Substances Ozone (66H7ZZK23N)
    Language English
    Publishing date 2024-04-04
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 782621-7
    ISSN 1573-2959 ; 0167-6369
    ISSN (online) 1573-2959
    ISSN 0167-6369
    DOI 10.1007/s10661-024-12579-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Z 5186: Show issues

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  2. Article: [Establishing quality assurance system of processed Chinese medicine to ensure clinical effect of traditional Chinese medicine].

    Xiao, Yongqing / Zhang, Cun / Li, Li / Jiang, Yun / Xu, Dongjin / Gu, Zhenrong / Wang, Yongyan

    Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica

    2012  Volume 37, Issue 14, Page(s) 2178–2180

    Abstract: For the purpose of stabilizing and enhancing the clinical effect, the author suggested that it should develop the key technology of integrated innovation research such as origin producing area processing technology, medicinal parts and energy-saving ... ...

    Abstract For the purpose of stabilizing and enhancing the clinical effect, the author suggested that it should develop the key technology of integrated innovation research such as origin producing area processing technology, medicinal parts and energy-saving rapid drying technology, process control technology, quality evaluation key technology, packaging and bar code identification technology to establish the quality assurance system of processed Chinese medicine, which is the key to ensure the clinical effect of traditional Chinese medicine.
    MeSH term(s) Drugs, Chinese Herbal/standards ; Humans ; Medicine, Chinese Traditional/standards ; Quality Control ; Technology, Pharmaceutical
    Chemical Substances Drugs, Chinese Herbal
    Language Chinese
    Publishing date 2012-07
    Publishing country China
    Document type English Abstract ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1004649-5
    ISSN 1001-5302 ; 0254-0029
    ISSN 1001-5302 ; 0254-0029
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 3056: Show issues Location:
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  3. Article: Purification and characterization of a novel chitinase from Bacillus brevis.

    Li, Sheng / Zhao, Zhi-An / Li, Ming / Gu, Zhen-Rong / Bai, Chen / Huang, Wei-Da

    Sheng wu hua xue yu sheng wu wu li xue bao Acta biochimica et biophysica Sinica

    2002  Volume 34, Issue 6, Page(s) 690–696

    Abstract: An extracellular chitinase secreted by Bacillus brevis was purified to homogeneity by a combination of ammonium sulfate precipitation, Phenyl-Sepharose hydrophobic-interaction chromatography and DEAE anion-exchange chromatography. On SDS-polyacrylamide ... ...

    Abstract An extracellular chitinase secreted by Bacillus brevis was purified to homogeneity by a combination of ammonium sulfate precipitation, Phenyl-Sepharose hydrophobic-interaction chromatography and DEAE anion-exchange chromatography. On SDS-polyacrylamide gel electrophoresis analysis, the purified enzyme showed a mass of 85 kD even in the presence of beta mercaptoethanol, but shifted to 48 kD when heated in boiling water or treated with 8 mol/L urea at 50 degrees for 10 min. The depolymerization of subunits was accompanied with the loss of chitinase activity, and removing denaturing factors by dialysis could restore the dimer structure and enzymatic activity. The enzyme had an isoelectric point of 5.5 and an optimal temperature of 60 degrees, and was most active at pH 8.0. The enzymatic activity was stable at pH 6-10, and inhibited by Ag(+). Ten N-terminal amino acids were determined to be AVSNSKIIGY, demonstrating that the purified enzyme was a novel one. The hydrolysis pattern of the purified enzyme indicated that the chitinase was an endochitinase. The extraordinary thermo-stability and high resistance to proteolysis provide the enzyme with a good prospect to be used as a new tool for biocontrol.
    MeSH term(s) Bacillus/enzymology ; Chitin/analogs & derivatives ; Chitin/metabolism ; Chitinases/chemistry ; Chitinases/isolation & purification ; Chitinases/metabolism ; Chitosan ; Chromatography, High Pressure Liquid ; Enzyme Stability ; Hydrogen-Ion Concentration ; Hydrolysis ; Molecular Weight ; Sequence Analysis, Protein ; Temperature
    Chemical Substances Chitin (1398-61-4) ; Chitosan (9012-76-4) ; Chitinases (EC 3.2.1.14)
    Language English
    Publishing date 2002-11
    Publishing country China
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2175256-4
    ISSN 1745-7270 ; 0582-9879 ; 1672-9145
    ISSN (online) 1745-7270
    ISSN 0582-9879 ; 1672-9145
    Database MEDical Literature Analysis and Retrieval System OnLINE

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