Objectives: Coronavirus disease 2019 (COVID-19) first broke-out in Wuhan China in December 2019, and spread throughout the entire country within a short time. This cross-sectional study investigated the prevalence of depression and anxiety and associated risk factors were analysed in patients with COVID-19. Methods: This single-center cross-sectional study focussed on measuring depression and anxiety using self-report scales. Linear regression was used to determine independent predictors for depression and anxiety. Results: A total of 78 patients who were confirmed to have COVID-19 were enrolled in the study. Prevalence of depression and anxiety symptoms were diagnosed in 35.9% and 38.5% of the patients, respectively. Multivariate linear regression analysis found female gender was an independent predictor for higher depression severity index. Having family members who were diagnosed with COVID-19 and family members who died from COVID-19 were independently associated with higher depression severity index and anxiety score. Conclusions: Patients with COVID-19 especially those who had family members diagnosed with COVID-19 or died from COVID-19 were more susceptible to depression and anxiety than were other patients. Effective strategies should be pursued to improve the mental health of this patient population. KEY POINTS Patients with COVID-19 showed a significantly high prevalence of depression and anxiety. Female patients were associated with higher risk of depression. Patients with family members diagnosed as COVID-19 or died from this disease were associated with higher risk of depression and anxiety.

In the manufacturing industry of the Coal-Electricity integration, due to the high-level of coal price, thermal power enterprises are in severe situations currently. This paper analyzes the relationship between the coal manufacturing industry and power manufacturing industry in China, and points out that coal-electricity integration is one important way to develop China's power industry. It also makes a comprehensive analysis and evaluation on the advantages and disadvantages of coal-electricity integration manufacturing industry. Thermal power enterprises should estimate the coming risk in the process of coal-electricity integration, and spare their efforts to improve the adaptability, thereby enhances the comprehensive ability to resist risks.

In this study, Nano-TiO2films are incorporated with heavy metal Pt by the Sol-Gel Dip-Coating (SGDC) method to change their photo-catalytic properties. The Pt and Pt/TiO2sol is prepared first, then it was used for coating on the ITO by the Dip-Coating method; finally, through calcination under the high temperature, the desired Pt and Pt/TiO2film can be obtained. The film structure was tested by the photoelectric test, XRD and AFM. Results showed that the best preparation conditions is identified as 10ml of Tetrabutyltitanate, 20ml of Anhydrous ethanol and 3ml of Tri-ethanolamine, with a 450°C of calcination temperature lasting for 3h; 3 layers of coating is also suggested with the Pt content being 0.30mol %.

The reaction efficiency of rigid PU foam alcoholysis in different conditions is studied in this research. The 1,2-propanediol and DEA are respectively used as alcoholysis agent and catalyst in the experiment. The influence of 1,2- propanediol/rigid and DEA/rigid PU foam weight ratios on the decomposed product is examined, and the respective alcoholysis efficiencies are also investigated. According to the experiment, two weight ratios (i.e. 2:1 for 1,2-PDO/rigid PU foam, and 0.1:1 for DEA/rigid PU foam) can be identified to make the reaction more efficient with less 1,2-PDO and DEA inputs.