Children with hearing loss are at risk of having difficulties in developing social-emotional competences compared to their peers. In Vietnam, so far, there has been no research on the social-emotional competence of hearing-impairedchildren. This paper aims to evaluate the reliability of the DASSE mini scale in using it to assess the social-emotional competence of children with hearing loss. This study used SPSS.20 software to evaluate the reliability and exploratory factor analysis (EFA) of the scale. A cross-sectional study on assessing social-emotional competence with the DASSE mini scale was conducted on 50 hearing-impaired students aged 6-12 years with varying degrees of impairment. The results of the evaluation of predictive validity show that the scale has high reliability and has good and suitable predictive value: Cronbach's Alpha = 0.928, KMO = 0.869 (> 0.05), sig. = 0.000 (sig Bartlett's Test < 0.05). The average score of the DASSE mini scale is: Mean =16.67. There are 56% of the students with social-emotional competence scores in the range of "Typical scores" and 44% with scores of "Need for instruction". There was no significant difference between male and female students in the study (t(50) = .377, p > .05), but the results showed annegative correlation between one’s degree of hearing loss and their social-emotional competence (r = -549, sig < .005).

This research aims to synthesize MoS2 thin film for the hydrogen evolution reaction (HER) by the electrochemical way. We investigated various electrochemical conditions, including the pH of electrolyte, the applied current density, and electrolysis time to find optimal synthesis mode. The obtained samples were characterized by scanning electron microscopy (SEM) images and X-ray diffraction (XRD) patterns to determine the morphology and crystal structure. The polarization curve confirmed the HER activity of MoS2 thin film. The results indicated that the synthesized MoS2 film had a perfect catalytic activity, as shown by the overpotential value at 10 mA/cm2 and Tafel slope reached 144 mV and 56.2 mV/dec, respectively.

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Photoelectrochemical water splitting is of great attention due to its environmentally friendly generation of clean fuels. Hematite (α-Fe2O3) is considered a promising candidate due to its intrinsic properties for the high-performance photoelectrochemical electrode, such as favorable bandgap (2.0–2.2 eV), a suitable energy band position non-toxicity, low cost, and excellent chemical stability. Herein, we report about Sn-doped hematite nanorods and their implementation as photoanodes for photoelectrochemical water splitting. We provide the simple but efficient route to incorporate the Sn into the hematite without structural damage in the nanostructure and scrutinize the effect of Sn dopant on the photoelectrochemical activity of the hematite. Sn can be successfully incorporated into the hematite by the two-step heat treatment process, which reveals the enhanced photoelectrochemical responses compared with undoped hematite.  We elaborate on the effect of Sn dopant in the hematite on the photoelectrochemical activities, thereby suggesting the optimum concentration of Sn dopant.