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The majority of electric arc injury wounds are deep second-degree or mixed depth wounds. Traditional treatment methods in these types of injuries have many shortcomings. This randomized prospective study evaluated the use of a minimally invasive hydrosurgery system for precise debridement, followed by the application of autologous skin cell suspension prepared utilizing the RECELL® Autologous Cell Harvesting Device (AVITA Medical). Compared with traditional methods, the cases treated with hydrosurgical debridement and autologous skin cell suspension had improved healing times and scar appearance after healing. The combination of these two treatment modalities appears to restore function and appearance for electric arc injuries.

A facile method, by sintering commercially available TiO2 in inert gas at high temperature, was used to obtain Ti3+ self-doping blue rutile TiO2 ceramic powder. Our results indicate that Ti3+ ions exist in bulk of TiO2 and the reduced TiO2 exhibits enhanced visible-light absorption. The reduced TiO2 possesses superior photocatalytic ability in photodegradation of methylene blue under Xe light illumination. Moreover, the reduced TiO2 exhibits good stability even after 12 months. This method provides an economical and universally applicable way to synthesize commercially available TiO2 powder with high and stable photocatalytic performance, which may have the promise for solar applications.

Nanomaterials with hollow structures have been the focus of attention in recent years because of their widespread applications. In this article, we successfully developed an effective method to synthesize polyhedral CoS2 hollow nanostructure using ZIF-67 as the sacrificial template. When assessed as the adsorbents for fluorescein sodium and Pb(II) removal, the adsorption isotherm show a good fit with the Langmuir model, with the maximum adsorption capacities of 289 and 758 mg g−1, respectively. In addition, the as-prepared CoS2 also has a good recycling ability in the removal of fluorescein sodium dye, and the adsorption efficiency remains 98% after the four cycles. The superior performance for adsorption of dye and heavy metal ion make the polyhedral CoS2 hollow nanostructure have potential applications in water treatment.

Compared with pure MOFs, core-shell heterostructures of noble-metal@MOFs have attracted tremendous interest due to their unique structure and extensive applications. In the present study, we have successfully synthesized well-defined core-shell Ag@ZIF-8 nanowires. The products growth process has been investigated by examining the products obtained at different intervals and the thickness of ZIF-8 shell ranging from 30 to 100 nm can be technically obtained by tuning the quantity of Ag nanowires. Ag@ZIF-8 has been proven to possess large specific surfaces and high thermal stability. Additionally, the antibacterial activity of Ag@ZIF-8 is further tested against Bacillus subtilis and Escherichia coli BL21. The results reveal that Ag@ZIF-8 core-shell heterostructure nanowires have effective activities against the two types of bacterial strains.

A novel gradual charge appointment concept is proposed to provide a clear physical insight of RESURF effects in bulk silicon lateral power devices. Due to the expandable substrate depletion region in silicon power device, the Linearly Graded Approximation is unable to fully describe the 2-D coupling effects between vertical and lateral junction. In this paper, by defining a charge appointment line, the lateral abrupt junction behaves as an effective gradual junction, thus resulting in the wider depletion layer, lower field peak and higher breakdown voltage. Based on the hypothesis, a simple 1-D model is proposed to quantify the breakdown voltage of the bulk silicon RESURF device and formulize the surface electric field. To our knowledge, the proposed model is the first 1-D model for bulk silicon RESURF device which can accurately describe the surface field profiles under various applied voltages and structure parameters. Furthermore, we provide a new RESURF criterion to explore the sensitivity of the breakdown voltage to structure parameters. Fair agreements among the analytical, numerical and experimental results verify the availability of the proposed concept and model.

Textile wastewater is commonly treated with activated sludge process technology. However, its treatment performance has not been demonstrated to be very effective. In this study, the effects of micronutrient thiamine on removal efficiencies of dissolved organic carbon (DOC) and chemical oxygen demand (COD) of textile wastewater in a batch test, together with its effect on the oxygen uptake rate (OUR) of activated sludge, were evaluated. Significant improvements were observed in the removal rates of DOC, COD and OUR with 121%, 156% and 121% of those of the control, respectively, when 0.5-2.0 mg/L thiamine was added to the wastewater treatment system. Thiamine could be probably used to improve the treatment performance of textile wastewater.