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COVID‐19 and social work practice for older adults in China
Lin Wenyi,Yin Wanxia 한국사회복지학회 2021 Asian Social Work and Policy Review Vol.15 No.1
After the spread of COVID-19, the Chinese central government has issued a series of policies and regulations to guide the prevention and control of the epidemic in the elderly care industry. Social workers provided a series of services for older adults in nursing homes and in the community. All efforts made by government agencies and social workers have helped older adults go through the difficult time.
Turnover intention predictors among social workers in China
Wenyi Lin,Mengyuan Deng 한국사회복지학회 2019 Asian Social Work and Policy Review Vol.13 No.1
The purpose of this study was to examine factors that best predict turnover among social workers in nonprofit organizations in Guangzhou, Guangdong Province of China. A sample of 312 social workers was selected to complete a self‐administered anonymous survey in 2014. A multiple logistical regression model was used to explain the different factors that influence social workers’ intention to leave their current jobs. The findings showed that age, education, perceived working condition, the perceived prospect of the social work profession, and social support predict turnover intention among social workers.
Jiang Lin,He Wenyi,Du Guangchao,Zheng Hao,Peng Yi 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.10
Vanadium precipitation with acidic ammonium salt is widely applied in industrial practice of vanadium pentoxide production. However, the ammonia wastewater produced in the precipitation process and resultant environmental issues have been paid increasing attention. With the intention of reducing wastewater and extra cost, an enhancement in the vanadium content of basic qualified solution is the most directly effective method. Unfortunately, high vanadium concentration brings about a low precipitation rate and a high Na content in ammonium polyvanadate, as a result of hydrolysis existence in the precipitation process. The effect of hydrolytic vanadium reaction on acidic ammonium salt precipitation has rarely been reported. Therefore, the whole precipitation process, including the effect of pH value, reaction temperature and vanadium concentration on precipitation result were clarified by analyzing the thermodynamic form of vanadate radicals in this work. Simultaneously, a study on technological parameters was inquired based on the theoretical analysis. The phase composition and crystal morphology of precipitates were also inspected using XRD and SEM-EDS. The results show the negative reaction of vanadium hydrolysis cannot be eliminated in the process of vanadium precipitation with acidic ammonia salt. When vanadium content is higher than 35g/L, Na in APV is easy to exceed 0.6%. Na mainly precipitates in V2O5·H2O in the formation of amorphous body or chemical absorption. The results in this work provide a fundamental guide for the application of high concentration vanadium precipitation technology.
Xin Lin,Junda Gong,Hang Li,Haiyun Zhang,Yang Yu,Wenyi Tan 대한환경공학회 2023 Environmental Engineering Research Vol.28 No.1
Solar-powered electrocoagulation (EC) process is proven to be an alternative option for wet flue gas desulfurization (WFGD) wastewater treatment, due to simultaneous removal of multiple pollutants efficiently and reduce the operation costs significantly. Rapid and stable photoelectricity response is necessary for the removal efficiency of pollutants (eg. COD and turbudity), especially in low solar irradiation intensity. In this paper, dimensionally stable anode (DSA) and operation voltages in EC process driven by solar cells were investigated, for the purpose of the optimized removal of pollutants, including COD, turbidity, (free residual chlorine and chlorine dioxide). The results show that the removal efficiency of COD and turbidity can respectively reach 59.12% and 39.11% within 30 min of illumination time (the enhanced solar radiation = 915.8 W m<SUP>-2</SUP>), when Ti-based plates were adopted. The concentration of free residual chlorine and chlorine dioxide can reach 2.70 and 5.31 mg L<SUP>-1</SUP>, indicating that chlorine ions present in WFGD wastewater have been converted into active chlorine partly. Solar-powered EC equipped with Ti-based plates have a potential prospect in EC process for WFGD wastewater treatment.