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  1. Article: Green synthesis of

    Tam, Khieu Thi / Thuy, Nguyen Thi / Ngan, Nguyen Thi Kim / Khai, Nguyen Manh / Van Thanh, Dang

    Royal Society open science

    2023  Volume 10, Issue 2, Page(s) 220819

    Abstract: A green synthetic approach to synthesize silver nanoparticles (AgNPs) using the stem extract ... ...

    Abstract A green synthetic approach to synthesize silver nanoparticles (AgNPs) using the stem extract of
    Language English
    Publishing date 2023-02-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 2787755-3
    ISSN 2054-5703
    ISSN 2054-5703
    DOI 10.1098/rsos.220819
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Prevalence of internet addiction and anxiety, and factors associated with the high level of anxiety among adolescents in Hanoi, Vietnam during the COVID-19 pandemic.

    Dien, Tran Minh / Chi, Pham Thi Lan / Duy, Pham Quang / Anh, Le Ha / Ngan, Nguyen Thi Kim / Hoang Lan, Vu Thi

    BMC public health

    2023  Volume 23, Issue 1, Page(s) 2441

    Abstract: Background: The COVID-19 pandemic and the resulting isolation measures created an increase in the usage of smart devices and internet among adolescents. This study aims to estimate the prevalence of internet addiction, the prevalence of high level of ... ...

    Abstract Background: The COVID-19 pandemic and the resulting isolation measures created an increase in the usage of smart devices and internet among adolescents. This study aims to estimate the prevalence of internet addiction, the prevalence of high level of anxiety as well as to examine factors associated with the high level of anxiety among adolescents in Hanoi, Vietnam during the COVID-19 pandemic.
    Method: Data was collected using respondent-driven sampling and Google online survey forms from a sample of 5,325 school students aged 11-17 in Hanoi between October and December 2021. A short scale consisting of 5 items was used to measure internet addiction and the GAD-7 was used to measure adolescent anxiety level.
    Results: The findings revealed that 22.8% and 7.32% of adolescents experienced moderate and severe anxiety. About 32.7% of the study sample exhibited at least three internet addiction indicators. Logistic regression analysis identified significant predictors for high levels of adolescent anxiety. Being female, family experiencing economic difficulties, and exposure to domestic violence were associated with higher risk of anxiety disorder (OR 1.78, 1.45, and 2.89, respectively). Both average daily online time and internet addiction demonstrated gradient association with high level of anxiety.
    Conclusion: The prevalence of internet addiction and high level of anxiety were high among adolescents in Hanoi, Vietnam during the COVID-19 pandemic. The study highlights the importance of implementing measures at the family and school levels to promote a balanced and healthy approach to smart device use among adolescents.
    MeSH term(s) Adolescent ; Female ; Humans ; Male ; Anxiety/epidemiology ; Anxiety Disorders/epidemiology ; Behavior, Addictive/epidemiology ; COVID-19/epidemiology ; Cross-Sectional Studies ; Internet ; Internet Addiction Disorder/epidemiology ; Pandemics ; Prevalence ; Vietnam/epidemiology
    Language English
    Publishing date 2023-12-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 2041338-5
    ISSN 1471-2458 ; 1471-2458
    ISSN (online) 1471-2458
    ISSN 1471-2458
    DOI 10.1186/s12889-023-17348-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Removal of arsenic from water using crumpled graphite oxide

    Son Ha Xuan / Hao Pham Van / Vinh Hac Van / Hai Nguyen Thanh / Ngan Nguyen Thi Kim / Minh Dang Nhat / Minh Phan Ngoc / Hong Phan Ngoc / Thanh Dang Van

    Green Processing and Synthesis, Vol 7, Iss 5, Pp 404-

    2018  Volume 408

    Abstract: In this work, we fabricated crumpled graphite oxides (CGOs) from discharged electrodes of waste batteries by the cathodic plasma electrolysis process and applied it for arsenic (As) removal from water solutions. Several factors that affect the removal ... ...

    Abstract In this work, we fabricated crumpled graphite oxides (CGOs) from discharged electrodes of waste batteries by the cathodic plasma electrolysis process and applied it for arsenic (As) removal from water solutions. Several factors that affect the removal efficiency of As(III) were investigated, including pH, initial concentrations, and contact time. After 120 min of experiment [10 mg of CGO in 40 ml of 1 mg/l As(III) solution], the removal efficiency reached to as high as 98.6%. From the Langmuir isotherm model, the calculated maximum adsorption capacity (qmax) was found to be 47.39 mg/g. The results from this study showed that CGOs could be an effective adsorbent for As(III) removal from the water environment and acts as a promising adsorbent for other heavy metals from contaminated water.
    Keywords adsorption ; arsenic ; graphite oxides ; plasma electrolysis ; Chemistry ; QD1-999
    Language English
    Publishing date 2018-10-01T00:00:00Z
    Publisher De Gruyter
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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