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Wyszukujesz frazę "Chen, Ting" wg kryterium: Autor

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Photo-oxidative Aging Behaviors of Acrylic Coatings during UV Irradiation Investigated by Positron Annihilation Spectroscopy
    Autorzy:
    Zhao, Xipo
    Cai, Xiaolin
    Liu, Chang
    Chen, Ting
    He, Chunqing
    Fang, Pengfei
    Peng, Shaoxian
    Powiązania:
    https://bibliotekanauki.pl/articles/1033253.pdf
    Data publikacji:
    2017-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    Acrylic coating
    UV irradiation
    positron annihilation spectroscopy
    Opis:
    Slow positron annihilation spectroscopy, contact angle and scanning electron microscope (SEM) were employed to investigate the surface polarity and morphologies as functions of aging time in acrylic coatings during UV-a irradiation. The S parameter plots of each exposed sample are lower than that of the virgin sample in the whole range of E. The S parameter plots become lower as the exposing longer time, indicated that the irradiation generated more polar groups and increased the oxidation layer depth. Combined with surface morphology and the surface energy of acrylic coating, the variation of contact angle, and surface energy, polar component and dispersive component is related with surface polarity and morphologies.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 5; 1527-1530
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface modification of fly ash spheroidal particles and their application in the adsorption of phosphorus and chromium(VI) from single and competitive solute systems
    Autorzy:
    Chen, Chen
    Cheng, Ting
    Zhang, Xiao
    Zhang, Minte
    Lv, Ruiyang
    Powiązania:
    https://bibliotekanauki.pl/articles/2032957.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    fly ash
    Langmuir isotherm
    adsorption phosphorus
    popiół lotny
    izoterma Langmuira
    adsorpcja fosforu
    Opis:
    This work focuses on the surface modification of fly ash spheroidal particles and their application in phosphorus and chromium(VI) adsorption. The results show that through surface modification, amorphous silica-alumina gels precipitated on the spheroidal particle surface (by which the microsurface area of the reaction products is effectively enlarged) and the surface zeta potential was changed to fit for adsorbing anions. During the adsorption experiment (single and competitive solute systems), chromium(VI) was easier to adsorb. The surface zeta potential and the existence of competitive ions should be recognized as two important factors affecting adsorption efficiency. A higher temperature could improve the adsorption efficiencies of the two solute systems. The fitting results of the pseudo-second-order model (single and competitive solute systems) show better agreement than those of the pseudo-first-order model at every temperature. The Langmuir adsorption isotherm equation can better simulate the adsorption process in single solute sy039stems, but only the chromium(VI) adsorption process can be fitted by the competitive Langmuir adsorption isotherm in competitive solute systems.
    Źródło:
    Environment Protection Engineering; 2020, 46, 3; 39-59
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effects of Mobile Game Based Application on High School Students’ TOEIC Vocabulary Learning
    Autorzy:
    Lu, Ting-I
    Tzu-Ching Chen, Kate
    Powiązania:
    https://bibliotekanauki.pl/articles/1964345.pdf
    Data publikacji:
    2021-12-31
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    mobile learning
    mobile app
    vocabulary learning
    TOEIC
    EFL
    Opis:
    The purpose of this study was to explore whether students’ vocabulary learning can be improved via mobile apps and to further enhance their TOEIC scores. Seventy English as a Foreign Language (EFL) senior high school students in Taiwan were recruited. TOEIC tests were used for pre-and post-testing to gather quantitative data. Qualitative data were collected from classroom observations and interviews. The results indicated that there was no significant difference in TOEIC scores between the experimental and the control group. However, students’ attitudes towards the app were positive and believed that it helped improve their vocabulary learning for the TOEIC exam.
    Źródło:
    The New Educational Review; 2021, 66; 108-119
    1732-6729
    Pojawia się w:
    The New Educational Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of MoO3 as an efficient catalyst for wet air oxidation treatment of pharmaceutical wastewater (Experimental and DFT study)
    Autorzy:
    Chen, Chen
    Cheng, Ting
    Wang, Lei
    Tian, Yuan
    Deng, Qin
    Shi, Yisu
    Powiązania:
    https://bibliotekanauki.pl/articles/1845416.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wet air oxidation
    catalytic wet air oxidation
    pharmaceutical wastewater
    DFT
    Opis:
    In this work, a highly effective catalyst (MoO3) is synthesized and applied for catalytic wet air oxidation (CWAO) treatment of pharmaceutical wastewater. The catalyst is systematically characterized to investigate the morphology, crystal structure and chemical composition, and the findings demostrated that MoO3 catalyst is successfully synthesized. The degradation mechanism is also illustrated by the density functional theory (DFT) calculation. The degradation experiments confirm that MoO3 catalyst exhibits excellent catalytic performance in CWAO, and the removal rate of TOC (Total Organic Carbon) and COD (Chemical Oxygen Demand) is achieved to more than 93%. The catalyst doses, reaction temperature and reaction time have a significant impact on the removal of pollutants. The degradation process of pollutants in CWAO could be satisfactorily fitted by the second-order kinetics. Besides, MoO3 displays a favorable stability as CWAO catalyst. DFT calculation illustrates that MoO3 catalyst is a typical indirect band gap semiconductor. Moreover, the high temperature environment provides the thermal excitation energy, which favors to the free electrons nearing Fermi level to escape the material surface, and excites them to the conduction band, then directly reduces the pollutants in CWAO. These findings demonstrate that MoO3 can be used as an efficient and excellent catalyst for CWAO of pharmaceutical wastewater.
    Źródło:
    Archives of Environmental Protection; 2021, 47, 2; 47-60
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of flocculation performance and mechanism of ultrafine montmorillonite particles with NPAM
    Autorzy:
    Wang, Lujun
    Min, Fanfei
    Chen, Jun
    Wang, Ting
    Zhou, Zhuang
    Powiązania:
    https://bibliotekanauki.pl/articles/2146901.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    montmorillonite
    flocculant
    nonionic polyacrylamide
    density functional theory
    Opis:
    Ultrafine montmorillonite particles are the main clay minerals in industrial wastewater. In order to explore the flocculation performance and mechanism of flocculant with montmorillonite, the effects of nonionic polyacrylamide (NPAM) dosage and molecular weight on flocculation effect were studied using a flocculation sedimentation experiment. The morphology of flocs was observed by metallographic microscope and scanning electron microscope, and the microscopic adsorption mechanism was studied utilizing density functional theory (DFT). The results show that the best reagent system for the montmorillonite sample is that the molecular weight of NPAM is 14 million and the added amount is 100 g/t. The floc size increases with rising NPAM dosage, forming a unique multi-level compact space network structure through polymer bridging. The adsorption energy of acrylamide on the Na-(001) surface of montmorillonite is -108.81 kJ/mol, which is significantly higher than -50.66 kJ/mol on the None-(001) surface. Hydrogen bonding is not the main reason for the adsorption of acrylamide on the montmorillonite surface. NPAM mainly causes the flocculation and sedimentation of montmorillonite through the processes of polymer bridging and electrostatic attraction. This study can provide a theoretical basis for the design and synthesis of new flocculants.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2022, 58, 3; art. no. 147790
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Factors influencing the mental health status of support nurses and their workload during the COVID-19 epidemic
    Autorzy:
    Dai, Zhen-Juan
    Xu, Shen-Ting
    Xue, Fang-Ying
    Zhou, Jian-Ying
    Chen, Jian-Qin
    Wang, Xue-Min
    Powiązania:
    https://bibliotekanauki.pl/articles/23369109.pdf
    Data publikacji:
    2023-12-15
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    COVID-19
    mental health
    epidemic prevention and control
    general mental health questionnaire
    NASA-TLX
    support nurse
    Opis:
    Objectives The authors used the National Aeronautics and Space Administration Task Load Index (NASA-TLX) and general health questionnaire to analyze the factors influencing the mental health status and the workload of support nurses during the COVID-19 epidemic. Material and Methods The authors conducted a cross-sectional survey of 349 support nurses in April–October 2022. Using QuestionStar, a powerful online survey tool, the authors administered surveys to the participants, collected data on the mental health status and workload of support nurses, and analyzed the influencing factors based on the collected data. Results A total of 316 questionnaires were successfully collected, with an effective rate of 98.75%. The proportion of support nurses with mental health problems was 25% and the value of the NASA-TLX questionnaire was: M±SD 68.91±7.28 pts. Multi-factor analysis revealed that the number of children, family support, and nursing support location were the influencing factors of mental health status, while the multivariate analysis revealed that the presence of symptoms, nursing support location, support work type, and total 12-item General Health Questionnaire (GHQ-12) score were the influencing factors of the workload of support nurses. Conclusions Compared to their counterparts in the plains, nurses working in isolated plateau regions who were caring for children and lacked family support, were more likely to have mental health issues. There was a positive correlation between the changes in GHQ-12 and NASA-TLX scores of the study participants. Compared to their counterparts in the plains and the tropical regions, nurses working in plateau regions had a heavier workload. As part of the follow-up measures to prevent and treat patients impacted by the COVID-19 epidemic, it is important to improve the mental health evaluation, consultation, and treatment of the support nurses to guarantee the high quality of the first-line support work.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2023, 36, 6; 761-772
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Curcumin Prevents Free Fatty Acid-Induced Lipid Accumulation via Targeting the miR-22-3p/CRLS1 Pathway in HepG2 Cells
    Autorzy:
    Mei, Yuanyuan
    Sun, Xiaoting
    Huang, Shi-Ying
    Wu, Xiaowen
    Ho, Kuo-Ting
    Lu, Liming
    Chen, Chaoxiang
    Li, Jian
    Liu, Jingwen
    Li, Guiling
    Powiązania:
    https://bibliotekanauki.pl/articles/28408450.pdf
    Data publikacji:
    2024-02-13
    Wydawca:
    Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
    Tematy:
    polyphenol
    epigenetics
    liver
    steatosis
    mitochondria
    Opis:
    Dysregulated lipid metabolism in liver is an important hallmark of non-alcoholic fatty liver disease (NAFLD), which may be modulated by dietary polyphenols or microRNAs (miRNAs). However, the underlying epigenetic regulatory mechanism of polyphenols remain unclear. The current study aimed to address how miRNA mediates hepatic lipid metabolic control of curcumin, a polyphenolic food supplement. The results showed that 24 h treatment with 5 - 20 μM curcumin prevented free fatty acid-induced lipid accumulation by around 10 ~ 50% in HepG2 cells, which was attenuated by pre-transfection with 40 nM miR-22-3p mimic for 48 h. In consequence, transfection with 40 nM miR-22-3p inhibitor for 48 h significantly reduced lipid accumulation by around 10%. And 48 h overexpression of miR-22-3p targeting cardiolipin synthase 1 (CRLS1) gene, which encodes a mitochondrial phospholipid synthase, showed a similar regulatory effect. Thus, miR-22-3p and CRLS1 showed opposite effects in modulating lipid metabolism, which probably involved mitochondrial control. In summary, this study demonstrated that curcumin improved hepatic lipid metabolism via targeting the miR-22-3p/CRLS1 pathway. Identification of the epigenetic regulatory mechanism underlying lipid metabolism may thereby facilitate alleviation of metabolic disorders by natural polyphenols.
    Źródło:
    Polish Journal of Food and Nutrition Sciences; 2024, 74, 1; 59-68
    1230-0322
    2083-6007
    Pojawia się w:
    Polish Journal of Food and Nutrition Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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