In this report, thin layers of MoS 2 were in-situ incorporated into graphene oxide (GO) to form MoS 2 /graphene nanocomposite by a facile ultrasonic-assisted hydrothermal method. Xray Diffraction (XRD) and Raman analysis revealed that the as-synthesized MoS 2 nanosheets crystalized in hexagonal phase 2H-MoS 2 while High Resolution Transmission Electron Microscopy (HRTEM) images confirmed that MoS 2 layers with average thickness of ~5-6 nm (6-8 layers) attached on the edges and surfaces of graphene sheets with high density and uniform shape restacking in three-dimensional (3D) architectures. The Scanning Transmission Electron Microscopy -Energy Dispersive X-ray spectrum (STEM-EDX) investigation further confirmed the low impurity of MoS 2 /graphene composite, and the well repairing of defects in GO surfaces during the hydrothermal process. Our approach is promising for a scalable, inexpensive, and accurate strategy to fabricate state-of-the-art materials with a certain structure for various practical applications such as electrode material for Lithium battery or supercapacitor.

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In this study, the effect of hydrothermal temperature of glass cullet (GC) and Ca(OH)2  was study. The batch-mixed sample with the Ca/Si 1.0 were hydrothermal reacted at different temperature such as 100, 150 and 180oC for 48 hour to find the suitable temperture to form the xonotlite. The data indicate that at 180oC for 48 hour, the peak of xonotlite at 2theta of 30 degree is highest, thus suggest for further study on the effect of hydrothermal reaction time to form the xonotlite.

Evidence of health service use and access across different target groups is essential for policy development, health promotion, and promotion of equity in healthcare. This study aims to look at ethnic variations in health service use and access among residents in mountainous areas of Vietnam. A cross-sectional descriptive study was conducted on 321 adults from two mountainous communes in Bac Kan province. Healthcare service use and access were evaluated by using a structured questionnaire. Zero-inflated Poisson regression was used to examine the ethnic variations in the healthcare service use and access. Of 321 mountainous residents, 63.6% used health services in the previous 12 months, of which 24.9% respondents used inpatient services and 47.9% used outpatient services. The number of outpatient medical services used by the Tay participant was higher than that of the Kinh and other ethnic groups ( p < 0.05 ). Multivariate regression results showed that compared to Kinh people, Tay people had a higher number of outpatient service use (Coef. = 0.25, p = 0.04 ), while people in other ethnicities had a lower number of service use (Coef. = −0.64, p = 0.01 ). Meanwhile, no difference was found among groups regarding the number of inpatient service use ( p > 0.05 ). This study showed the ethnic differences in outpatient use of health services among communities living in the northern mountainous setting of Vietnam.