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  1. Artikel ; Online: Risk analysis of heavy metal concentration in surface waters across the rural-urban interface of the Wen-Rui Tang River, China.

    Qu, Liyin / Huang, Hong / Xia, Fang / Liu, Yuanyuan / Dahlgren, Randy A / Zhang, Minghua / Mei, Kun

    Environmental pollution (Barking, Essex : 1987)

    2018  Band 237, Seite(n) 639–649

    Abstract: ... heavy metals (As, Pb, Cd, Cr, Hg, Cu, Zn) from 14 sites spanning the rural-urban interface of the Wen-Rui Tang ...

    Abstract Heavy metal pollution is a major concern in China because of its serious effects on human health. To assess potential human health and ecological risks of heavy metal pollution, concentration data for seven heavy metals (As, Pb, Cd, Cr, Hg, Cu, Zn) from 14 sites spanning the rural-urban interface of the Wen-Rui Tang River watershed in southeast China were collected from 2000 to 2010. The heavy metal pollution index (HPI), hazard index (HI) and carcinogenic risk (CR) metrics were used to assess potential heavy metal risks. Further, we evaluated the uncertainty associated with the risk assessment indices using Monte Carlo analysis. Results indicated that all HPI values were lower than the critical level of 100 suggesting that heavy metal levels posed acceptable ecological risks; however, one site having an industrial point-source input reached levels of 80-97 on several occasions. Heavy metal concentrations fluctuated over time, and the decrease after 2007 is due to increased wastewater collection. The HI suggested low non-carcinogenic risk throughout the study period (HI < 1); however, nine sites showed CR values above the acceptable level of 10
    Mesh-Begriff(e) Arsenic/analysis ; China ; Ecology ; Environmental Monitoring ; Environmental Pollution/analysis ; Humans ; Mercury/analysis ; Metals, Heavy/analysis ; Risk Assessment ; Rivers/chemistry ; Water Pollutants, Chemical/analysis
    Chemische Substanzen Metals, Heavy ; Water Pollutants, Chemical ; Mercury (FXS1BY2PGL) ; Arsenic (N712M78A8G)
    Sprache Englisch
    Erscheinungsdatum 2018-06
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 280652-6
    ISSN 1873-6424 ; 0013-9327 ; 0269-7491
    ISSN (online) 1873-6424
    ISSN 0013-9327 ; 0269-7491
    DOI 10.1016/j.envpol.2018.02.020
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  2. Artikel: Risk analysis of heavy metal concentration in surface waters across the rural-urban interface of the Wen-Rui Tang River, China

    Qu, Liyin / Hong Huang / Fang Xia / Yuanyuan Liu / Randy A. Dahlgren / Minghua Zhang / Kun Mei

    Environmental pollution. 2018 June, v. 237

    2018  

    Abstract: ... heavy metals (As, Pb, Cd, Cr, Hg, Cu, Zn) from 14 sites spanning the rural-urban interface of the Wen-Rui Tang ...

    Abstract Heavy metal pollution is a major concern in China because of its serious effects on human health. To assess potential human health and ecological risks of heavy metal pollution, concentration data for seven heavy metals (As, Pb, Cd, Cr, Hg, Cu, Zn) from 14 sites spanning the rural-urban interface of the Wen-Rui Tang River watershed in southeast China were collected from 2000 to 2010. The heavy metal pollution index (HPI), hazard index (HI) and carcinogenic risk (CR) metrics were used to assess potential heavy metal risks. Further, we evaluated the uncertainty associated with the risk assessment indices using Monte Carlo analysis. Results indicated that all HPI values were lower than the critical level of 100 suggesting that heavy metal levels posed acceptable ecological risks; however, one site having an industrial point-source input reached levels of 80–97 on several occasions. Heavy metal concentrations fluctuated over time, and the decrease after 2007 is due to increased wastewater collection. The HI suggested low non-carcinogenic risk throughout the study period (HI < 1); however, nine sites showed CR values above the acceptable level of 10−4 for potential cancer risk from arsenic in the early 2000s. Uncertainty analysis revealed an exposure risk for As at all sites because some CR values exceeded the 10−4 level of concern; levels of Cd near an old industrial area also exceeded the Cd exposure standard (2.6% of CR values > 10−4). While most metrics for human health risk did not exceed critical values for heavy metals, there is still a potential human health risk from chronic exposure to low heavy metal concentrations due to long-term exposure and potential metal interactions. Results of this study inform water pollution remediation and management efforts designed to protect public health in polluted urban area waterways common in rapidly developing regions.
    Schlagwörter Monte Carlo method ; arsenic ; cadmium ; chromium ; chronic exposure ; copper ; heavy metals ; human health ; lead ; mercury ; neoplasms ; public health ; remediation ; risk ; risk assessment ; rivers ; surface water ; uncertainty ; uncertainty analysis ; urban areas ; wastewater ; water pollution ; watersheds ; waterways ; zinc ; China
    Sprache Englisch
    Erscheinungsverlauf 2018-06
    Umfang p. 639-649.
    Erscheinungsort Elsevier Ltd
    Dokumenttyp Artikel
    ZDB-ID 280652-6
    ISSN 1873-6424 ; 0013-9327 ; 0269-7491
    ISSN (online) 1873-6424
    ISSN 0013-9327 ; 0269-7491
    DOI 10.1016/j.envpol.2018.02.020
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  3. Artikel ; Online: Spatial distribution and source apportionment of water pollution in different administrative zones of Wen-Rui-Tang (WRT) river watershed, China.

    Yang, Liping / Mei, Kun / Liu, Xingmei / Wu, Laosheng / Zhang, Minghua / Xu, Jianming / Wang, Fan

    Environmental science and pollution research international

    2013  Band 20, Heft 8, Seite(n) 5341–5352

    Abstract: ... Rui-Tang (WRT) river watershed, near the East China Sea. The 12 monitoring sites were divided ...

    Abstract Water quality degradation in river systems has caused great concerns all over the world. Identifying the spatial distribution and sources of water pollutants is the very first step for efficient water quality management. A set of water samples collected bimonthly at 12 monitoring sites in 2009 and 2010 were analyzed to determine the spatial distribution of critical parameters and to apportion the sources of pollutants in Wen-Rui-Tang (WRT) river watershed, near the East China Sea. The 12 monitoring sites were divided into three administrative zones of urban, suburban, and rural zones considering differences in land use and population density. Multivariate statistical methods [one-way analysis of variance, principal component analysis (PCA), and absolute principal component score-multiple linear regression (APCS-MLR) methods] were used to investigate the spatial distribution of water quality and to apportion the pollution sources. Results showed that most water quality parameters had no significant difference between the urban and suburban zones, whereas these two zones showed worse water quality than the rural zone. Based on PCA and APCS-MLR analysis, urban domestic sewage and commercial/service pollution, suburban domestic sewage along with fluorine point source pollution, and agricultural nonpoint source pollution with rural domestic sewage pollution were identified to the main pollution sources in urban, suburban, and rural zones, respectively. Understanding the water pollution characteristics of different administrative zones could put insights into effective water management policy-making especially in the area across various administrative zones.
    Mesh-Begriff(e) Analysis of Variance ; Arsenic/analysis ; Biological Oxygen Demand Analysis ; China ; Copper/analysis ; Environmental Monitoring ; Fluorine/analysis ; Linear Models ; Nitrogen/analysis ; Oxygen/analysis ; Principal Component Analysis ; Quaternary Ammonium Compounds/analysis ; Rivers ; Water Pollution/analysis ; Water Supply ; Zinc/analysis
    Chemische Substanzen Quaternary Ammonium Compounds ; Fluorine (284SYP0193) ; Copper (789U1901C5) ; Zinc (J41CSQ7QDS) ; Arsenic (N712M78A8G) ; Nitrogen (N762921K75) ; Oxygen (S88TT14065)
    Sprache Englisch
    Erscheinungsdatum 2013-02-13
    Erscheinungsland Germany
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-013-1536-x
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel: Spatial distribution and source apportionment of water pollution in different administrative zones of Wen-Rui-Tang (WRT) river watershed, China

    Yang, Liping / Mei, Kun / Liu, Xingmei / Wu, Laosheng / Zhang, Minghua / Xu, Jianming / Wang, Fan

    Environmental science and pollution research. 2013 Aug., v. 20, no. 8

    2013  

    Abstract: ... Rui-Tang (WRT) river watershed, near the East China Sea. The 12 monitoring sites were divided ...

    Abstract Water quality degradation in river systems has caused great concerns all over the world. Identifying the spatial distribution and sources of water pollutants is the very first step for efficient water quality management. A set of water samples collected bimonthly at 12 monitoring sites in 2009 and 2010 were analyzed to determine the spatial distribution of critical parameters and to apportion the sources of pollutants in Wen-Rui-Tang (WRT) river watershed, near the East China Sea. The 12 monitoring sites were divided into three administrative zones of urban, suburban, and rural zones considering differences in land use and population density. Multivariate statistical methods [one-way analysis of variance, principal component analysis (PCA), and absolute principal component score—multiple linear regression (APCS-MLR) methods] were used to investigate the spatial distribution of water quality and to apportion the pollution sources. Results showed that most water quality parameters had no significant difference between the urban and suburban zones, whereas these two zones showed worse water quality than the rural zone. Based on PCA and APCS-MLR analysis, urban domestic sewage and commercial/service pollution, suburban domestic sewage along with fluorine point source pollution, and agricultural nonpoint source pollution with rural domestic sewage pollution were identified to the main pollution sources in urban, suburban, and rural zones, respectively. Understanding the water pollution characteristics of different administrative zones could put insights into effective water management policy-making especially in the area across various administrative zones.
    Schlagwörter analysis of variance ; fluorine ; land use ; linear models ; nonpoint source pollution ; point source pollution ; pollutants ; population density ; principal component analysis ; rivers ; sewage ; water distribution ; water pollution ; water quality ; watersheds ; China ; East China Sea
    Sprache Englisch
    Erscheinungsverlauf 2013-08
    Umfang p. 5341-5352.
    Erscheinungsort Springer-Verlag
    Dokumenttyp Artikel
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-013-1536-x
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  5. Buch ; Online: Advanced Energetic Materials: Testing and Modeling

    Liu, Rui / Wen, Yushi / Pang, Weiqiang

    2023  

    Schlagwörter Research & information: general ; Physics ; 5-amino-1H-tetrazole ; tear gas mixture ; combustible agent ; combustion pyrolysis characteristics ; dynamics research ; aluminum ; oxidation process ; reaction mechanism ; modification method ; development trend ; N-oxides ; cyclization reaction ; synthesis ; detonation performance ; insensitive munition ; JEOL ; cook-off ; ignition characteristic ; Ni/Al energetic structural materials ; thermal reaction ; reaction kinetic model ; two reaction stages ; DNTF ; CL-20 ; nanoindentation ; explosive crystals ; micromechanical properties ; composite explosives ; microfluidic ; laser ignition ; RDX@FOX-7 ; thermal analysis ; micro-Raman ; high-energy permanent magnets ; (Sm, Zr)(Co ; Cu ; Fe)z alloys ; as-cast state ; coherent 1:5 phase ; micromagnetic simulation ; sandwich model ; MuMax3 ; high-energy materials genome ; artificial neural networks ; burning rate ; multifactor computational models ; 3,4-Bis(3-nitrofurazan-4-yl) furozan (DNTF) ; crystallization ; energetic binder GAP ; mechanical sensitivity ; molecular dynamics simulation ; safety engineering ; fragmentation impact ; high-energy HTPB propellant ; shock initiation ; equation of state ; numerical simulation ; friction sensitivity ; ignition ; cast PBX ; mesoscopic model ; mitigation structure ; pressure relief area ; pressure relief effect ; low-melting crystal ; n/a
    Sprache Englisch
    Umfang 1 electronic resource (226 pages)
    Verlag MDPI - Multidisciplinary Digital Publishing Institute
    Erscheinungsort Basel
    Dokumenttyp Buch ; Online
    Anmerkung English
    HBZ-ID HT030645548
    ISBN 9783036594576 ; 3036594574
    Datenquelle ZB MED Katalog Medizin, Gesundheit, Ernährung, Umwelt, Agrar

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  6. Artikel: [A multicenter randomized phase II trial of domestic product of rhG-CSF(Rui Xue Xin) in preventing leukopenia caused by chemotherapy in patients with lung cancer].

    Zhou, Q / Qiu, M / Hou, M / Ren, L / Li, L / Yi, C / Yang, Y / Liu, L / Li, Z / Xu, Y / Luo, D / Wang, Q / Zhang, L / Lin, J / Shi, J

    Zhongguo fei ai za zhi = Chinese journal of lung cancer

    2000  Band 3, Heft 3, Seite(n) 161–165

    Abstract: Background: To evaluate the effect and toxicity of the domestic product of rhG-CSF (Rui Xue Xin ... plus injection of Rui Xue Xin) , and the second cycle was a control cycle (chemotherapy alone) in AB ... the side effect of Rui Xue Xin were observed and compared between the trial cycle and control cycle.: Results ...

    Abstract Background: To evaluate the effect and toxicity of the domestic product of rhG-CSF (Rui Xue Xin) in preventing leukopenia caused by chemotherapy in patients with lung cancer.
    Methods: 67 patients in multicenter were randomly devided into AB group and BA group. The first cycle was a trial cycle (chemotherapy plus injection of Rui Xue Xin) , and the second cycle was a control cycle (chemotherapy alone) in AB group. On the contrast , the first cycle was a control cycle , and the second cycle was a trial cycle in BA group. The changes of white blood cell (WBC) and absolute neutrophil counts (ANC) , and the side effect of Rui Xue Xin were observed and compared between the trial cycle and control cycle.
    Results: Of the 67 patients , 6 cases were out of the trial because of patient compliance , and the another one case due to fever , and the other 61 cases could be used to analyze and to evaluate the effects and toxicity of Rui Xue Xin. The duration of leukopenia and neutropenia in cycle A was significantly shorter than that in cycle B ( P < 0. 01) . The nadirs of WBC and ANC following chemotherapy were remarkably higher in cycle A than those in cycle B ( P < 0. 01) . The incidence of chemotherapy delay due to WBC < 4. 0 *109 /L on the 21st day after chemotherapy in cycle A was also significantly lower than that in cycle B ( P < 0. 01) . The total rate of side effects of Rui Xue Xin was 26. 2 % , including pain and scleroma on the injection sites , weakness , fever. But , all of them were mild and didn't need to give any treatment.
    Conclusions: The results demonstrate that Rui Xue Xin is able to reduce the degree of leukopenia and neutropenia , and to shorten the duration of leukopenia and neutropenia caused by chemotherapy in patients with lung cancer. The toxicity is also slight.
    Sprache Chinesisch
    Erscheinungsdatum 2000-06-20
    Erscheinungsland China
    Dokumenttyp English Abstract ; Journal Article
    ZDB-ID 2438672-8
    ISSN 1999-6187 ; 1009-3419
    ISSN (online) 1999-6187
    ISSN 1009-3419
    DOI 10.3779/j.issn.1009-3419.2000.03.01
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel: A promising area of research in medicine: recent advances in properties and applications of Lactobacillus-derived exosomes.

    Liu, Rui

    Frontiers in microbiology

    2024  Band 15, Seite(n) 1266510

    Abstract: Lactobacillus-derived exosomes, small extracellular vesicles released by bacteria, have emerged as a promising area of research in recent years. These exosomes possess a unique structural and functional diversity that allows them to regulate the immune ... ...

    Abstract Lactobacillus-derived exosomes, small extracellular vesicles released by bacteria, have emerged as a promising area of research in recent years. These exosomes possess a unique structural and functional diversity that allows them to regulate the immune response and promote gut health. The isolation and purification of these exosomes are crucial for their effective use as a therapeutic agent. Several isolation and purification methods have been developed, including differential ultracentrifugation, density gradient centrifugation, and size-exclusion chromatography. Lactobacillus-derived exosomes have been demonstrated to have therapeutic potential in various diseases, such as inflammatory bowel disease, liver disease, and neurological disorders. Moreover, they have been shown to serve as effective carriers for drug delivery. Genetic engineering of these exosomes has also shown promise in enhancing their therapeutic potential. Overall, Lactobacillus-derived exosomes represent a promising area of research for the development of novel therapeutics for immunomodulation, gut health, and drug delivery.
    Sprache Englisch
    Erscheinungsdatum 2024-04-15
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article ; Review
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2024.1266510
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  8. Buch ; Online: Magnetic Flux Ropes: From the Sun to the Earth and Beyond

    Liu, Rui / Zhang, Jie / Wang, Yuming / Song, Hongqiang

    2020  

    Schlagwörter Science: general issues ; Astronomy, space & time ; Sun ; magnetic flux rope ; magnetic twist ; coronal mass ejection ; filament eruption ; magnetic cloud
    Umfang 1 electronic resource (126 pages)
    Verlag Frontiers Media SA
    Dokumenttyp Buch ; Online
    Anmerkung English ; Open Access
    HBZ-ID HT021230684
    ISBN 9782889663361 ; 2889663361
    Datenquelle ZB MED Katalog Medizin, Gesundheit, Ernährung, Umwelt, Agrar

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  9. Artikel ; Online: Preschool teachers' predicaments of teaching online and strategies employed during the COVID-19 pandemic: A literature review.

    Liu, Zi Rui

    Work (Reading, Mass.)

    2024  

    Abstract: Background: The COVID-19 pandemic accelerated the transition to remote preschool education, highlighting the crucial role of preschool teachers in navigating pedagogical transformations, adapting to technology, and addressing the challenges of distance ... ...

    Abstract Background: The COVID-19 pandemic accelerated the transition to remote preschool education, highlighting the crucial role of preschool teachers in navigating pedagogical transformations, adapting to technology, and addressing the challenges of distance learning.
    Objective: This study delved into the intricate challenges confronted by educators specializing in early childhood education within the realm of remote instruction during the COVID-19 pandemic. Additionally, it scrutinized a spectrum of tactics and interventions implemented to overcome the challenges, presenting nuanced insights to enhance the effectiveness of online pedagogy.
    Methods: Conducting a systematic literature review, this study comprehensively analysed academic sources to synthesize challenges faced by preschool teachers and their adaptive strategies during the transition to remote instruction induced by the COVID-19. The investigation focused on online teaching strategies, COVID-19 implications, and the broader landscape of remote learning.
    Results: The review illuminated intricate challenges, encompassing technological constraints, pedagogical adjustments, and psychological adaptations. These challenges compelled the deployment of a diverse range of strategies, underscoring educators' resilience and resourcefulness in maintaining vibrant online teaching and learning ecosystems.
    Conclusion: This study offers a valuable compendium of insights, providing a comprehensive view of the evolving landscape of remote pedagogy. By fostering a nuanced understanding of the challenges and strategies, educators, administrators, and policymakers can collaboratively devise informed interventions. This collaborative effort optimizes online teaching practices, fostering enriched learning outcomes within the digital epoch.
    Sprache Englisch
    Erscheinungsdatum 2024-01-18
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article ; Review
    ZDB-ID 1394194-x
    ISSN 1875-9270 ; 1051-9815
    ISSN (online) 1875-9270
    ISSN 1051-9815
    DOI 10.3233/WOR-230321
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  10. Artikel ; Online: The construction of the inheritance performance evaluation system for inheritors of intangible cultural heritage of traditional sports

    Rui Liu

    SN Applied Sciences, Vol 5, Iss 6, Pp 1-

    2023  Band 14

    Abstract: Abstract This paper shows the construction of a performance evaluation system for the inheritance of traditional sports intangible cultural inheritors. In order to ensure the scientific nature and rationality of the indicators, a theoretical model of ... ...

    Abstract Abstract This paper shows the construction of a performance evaluation system for the inheritance of traditional sports intangible cultural inheritors. In order to ensure the scientific nature and rationality of the indicators, a theoretical model of performance evaluation content is first established. Then, based on the theoretical model, the preliminary selection of indicators is completed, and then the expert screening of indicators is further completed by Delphi method, and the weights of each indicator are established through analytic hierarchy. Finally, in order to verify the application effect of the indicator system in practice, this study conducts an empirical study on the system from the perspective of regional performance evaluation. The results show that the discriminating power and applicability of the evaluation indicator are effective, and the evaluation system has a very distinct epochal and people-centered character. In conclusion, the construction of this evaluation system is of great significance to improve the scientific and standardized level of evaluation of Intangible cultural heritage inheritors.
    Schlagwörter Intangible cultural heritage (ICH) ; Traditional sports ; Indicators ; Evaluation ; Performance ; Science ; Q ; Technology ; T
    Thema/Rubrik (Code) 650
    Sprache Englisch
    Erscheinungsdatum 2023-05-01T00:00:00Z
    Verlag Springer
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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