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  1. Article ; Online: Depression, anxiety and stress among healthcare workers in the context of the COVID-19 pandemic: a cross-sectional study in a tertiary hospital in Northern Vietnam.

    Thu Pham, Hien / Viet Cao, Tung / Bich Le, Ngoc / T-T Nguyen, Nhung / Thi Ngoc Vuong, Bich / Vu Dieu Pham, Linh / Thu Hoang, Trang / Thi Hanh Pham, Trang / Ngoc Nguyen, Thuy / Thi Thu Bui, Huong / Van Tran, Tho / Thuy Vu, Linh / Thi Le, Phuong

    Frontiers in public health

    2023  Volume 11, Page(s) 1231326

    Abstract: Introduction: The outbreak of coronavirus severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) had significant effects on the mental well-being in general, particularly for healthcare professionals. This study examined the prevalence of ... ...

    Abstract Introduction: The outbreak of coronavirus severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) had significant effects on the mental well-being in general, particularly for healthcare professionals. This study examined the prevalence of depression, anxiety, and stress, and identified the associated risk factors amongst healthcare workers during the COVID-19 outbreak in a tertiary hospital located in Vietnam.
    Methods: We conducted a cross-sectional study at a tertiary-level hospital, where the Depression Anxiety and Stress Scale 21 (DASS-21) web-based questionnaire was employed. We analyzed the determinant factors by employing multivariate logistic models.
    Results: The prevalence of depression, anxiety, and stress symptoms were 19.2%, 24.7%, and 13.9%, respectively. Factors such as engaging in shift work during the pandemic, taking care of patients with COVID-19, and staff's health status were associated with mental health issues among health professionals. In addition, having alternate rest periods was likely to reduce the risk of stress.
    Conclusion: The prevalence of mental health problems in healthcare workers during the COVID-19 pandemic was relatively high. Having resting periods could potentially mitigate the development of stress among health professionals. Our findings could be taken into account for improving mental health of the health professional population.
    MeSH term(s) Humans ; COVID-19/epidemiology ; Pandemics ; Cross-Sectional Studies ; SARS-CoV-2 ; Depression/epidemiology ; RNA, Viral ; Tertiary Care Centers ; Vietnam/epidemiology ; Anxiety/epidemiology ; Health Personnel/psychology
    Chemical Substances RNA, Viral
    Language English
    Publishing date 2023-09-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2711781-9
    ISSN 2296-2565 ; 2296-2565
    ISSN (online) 2296-2565
    ISSN 2296-2565
    DOI 10.3389/fpubh.2023.1231326
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: MoO2 nanocrystals interconnected on mesocellular carbon foam as a powerful catalyst for vanadium redox flow battery

    Thu Pham, Hien Thi / Jo, Changshin / Lee, Jinwoo / Kwon, Yongchai

    RSC advances. 2016 Feb. 11, v. 6, no. 21

    2016  

    Abstract: To increase the performance of vanadium redox flow battery (VRFB), the rate of the reaction of the VO2+/VO2+ redox couple, known as the rate determining reaction, should be increased. To increase the rate of this reaction, molybdenum dioxide nanocrystals ...

    Abstract To increase the performance of vanadium redox flow battery (VRFB), the rate of the reaction of the VO2+/VO2+ redox couple, known as the rate determining reaction, should be increased. To increase the rate of this reaction, molybdenum dioxide nanocrystals interconnected on mesocellular carbon foam (MoO2/MSU-F-C) are suggested as a new catalyst. Initially, the optimal amount of MoO2 embedded on MSU-F-C is determined, whereas its activity, reversibility and charge–discharge behavior are investigated. The specific surface area, crystal structure, surface morphology and component analysis of the composite are also measured using BET, XRD, TEM, TGA, EELS and XPS. As a result, the MoO2/MSU-F-C results in a high peak current, small peak potential difference and high electron transfer rate constant, confirming that the composite is an excellent catalyst for the VO2+/VO2+ redox reaction. In terms of multiple charge–discharge tests, a VRFB single cell, including MoO2/MSU-F-C, induces high voltage and energy efficiencies with high specific capacity and a low capacity loss rate. These results are attributed to the intercalation of MoO2 by metal cations such as VO2+ and VO2+ and the existence of hydrophilic functional groups on the surface of MoO2/MSU-F-C. The intercalated MoO2 plays an excellent conductor role in promoting fast ionic and electron transfer and reducing overpotential, whereas the hydrophilic functional groups improve the VO2+/VO2+ redox reaction by lowering its activation energy.
    Keywords X-ray diffraction ; X-ray photoelectron spectroscopy ; activation energy ; batteries ; carbon ; catalysts ; crystal structure ; electric potential difference ; electron transfer ; energy efficiency ; foams ; hydrophilicity ; metal ions ; moieties ; molybdenum ; nanocrystals ; surface area ; thermogravimetry ; transmission electron microscopy ; vanadium ; vanadyl ions
    Language English
    Dates of publication 2016-0211
    Size p. 17574-17582.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ISSN 2046-2069
    DOI 10.1039/c5ra24626a
    Database NAL-Catalogue (AGRICOLA)

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