Publications by authors named "N D Kien"
Article Synopsis
- - The study analyzes how different weather information sources influence the effects of extreme heat on hospitalized individuals in Central Vietnam, revealing that both official channels and social media can lower the economic costs associated with heat-related illnesses.
- - Social media was highlighted as a particularly effective means for climate adaptation, emphasizing the importance of clear and accessible weather information for households of different income levels.
- - The research suggests that demographic factors like age and gender should shape communication strategies, especially for those with pre-existing health conditions, to enhance policy efforts aimed at improving climate resilience in vulnerable communities.
In this study, Eu ion singly doped and Eu/Sm ions co-doped ZnS semiconductor quantum dots (QDs) were successfully synthesized using a wet chemical method in 1-octadecene (ODE) solvent. The successful doping of Sm and Eu ions into the ZnS host lattice and the composition and valence of the elements present in the sample were confirmed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Structural and morphological studies revealed the presence of Eu-doped ZnS and Eu/Sm co-doped ZnS QDs of about 3-4 nm size with a zinc blende structure.
View Article and Find Full Text PDFNaGdF:Dy nanocrystals (NCs) have been synthesized using a precipitation technique. The structural characteristics and morphology of the materials were analyzed using X-ray diffraction patterns and scanning electron microscopy images, respectively. The photoluminescence excitation spectra, emission spectra and decay curves of all samples were recorded at room temperature.
View Article and Find Full Text PDFArticle Synopsis
- The study focuses on creating cost-effective and efficient nanocomposite photocatalysts, specifically TiO/activated carbon (TiO/AC) composites, using a straightforward preparation method involving mechanical pounding, ultrasonic mixing, and mild thermal annealing.
- Characterization techniques like XRD, SEM-EDS, and UV-Vis spectroscopy were used to analyze the structural and photocatalytic properties of these composites, revealing that the optimal TiO/AC ratio (4:1) showed the best performance in degrading methylene blue.
- The enhanced photocatalytic activity of the TiO/AC composites is attributed to the combination of activated carbon's high adsorption capacity and titanium oxide's photocatalytic efficiency, which together help