Solar powered vapor absorption system using propane and alkylated benzene AB300 oil

This paper describes experimental work on a solar assisted vapour absorption air conditioning system using Propane (refrigerant) and Alkylated Benzene (AB300-refrigeration lubrication oil, absorbent). Preliminary experiments to assess the miscibility of propane in various lubricating oils namely Shell Clavus oils 32 and 64 and Alkylated Benzene oils AB150 and AB300 indicated that Propane is most miscible in Alkylated Benzene AB300. The vapour absorption system is a single stage absorption consisting of evaporator, absorber, generator and condenser. The system is equipped with heat pipes installed between the absorber and the pre-generator to recover the heat of absorption. The heat applied to the generator replicated the solar thermal energy based on the climatic conditions of Jamaica using flat plate collectors commonly used in Jamaica. Experiments at various evaporator, absorber and generator temperatures showed that the coefficient of performance of the system increases with increasing the generator temperature and with decreasing the absorber temperatures. The solar fraction for the flat plate collectors to produce the generator temperature needed to drive the absorption system is up to 50%

The Impact of Board Size on Green Innovation in China’s Heavily Polluting Enterprises: The Mediating Role of Innovation Openness

Among the many reasons to encourage enterprises to implement green innovation, external factors such as market mechanisms and policy regulation both have the greatest probability of failure. Therefore, the idea of exploring ways to promote green innovation from internal factors has gradually attracted attention. This study is based on an internal perspective to explore the relationship between board size, openness, and green innovation by using data from the heavily polluting enterprises listed in China’s A-share market from 2015 to 2020. The regression results show that board size has a significant positive impact on green innovation, and the openness breadth plays a partial mediating role. This indicates that more board members are conducive to the implementation of green innovation strategies, as well as expanding the innovation openness breadth, so as to obtain external knowledge and resources to promote green innovation. Through further heterogeneity analysis, we found that the above relationship is more significant in state-owned enterprises. Finally, this study provides new theoretical evidence for the debate over whether board size promotes or inhibits green innovation. Furthermore, it provides a path and practical guidance for enterprises to implement green innovation more effectively by relying on their directors’ networks and increasing their own openness

The Impact of Board Size on Green Innovation in China’s Heavily Polluting Enterprises: The Mediating Role of Innovation Openness

Among the many reasons to encourage enterprises to implement green innovation, external factors such as market mechanisms and policy regulation both have the greatest probability of failure. Therefore, the idea of exploring ways to promote green innovation from internal factors has gradually attracted attention. This study is based on an internal perspective to explore the relationship between board size, openness, and green innovation by using data from the heavily polluting enterprises listed in China’s A-share market from 2015 to 2020. The regression results show that board size has a significant positive impact on green innovation, and the openness breadth plays a partial mediating role. This indicates that more board members are conducive to the implementation of green innovation strategies, as well as expanding the innovation openness breadth, so as to obtain external knowledge and resources to promote green innovation. Through further heterogeneity analysis, we found that the above relationship is more significant in state-owned enterprises. Finally, this study provides new theoretical evidence for the debate over whether board size promotes or inhibits green innovation. Furthermore, it provides a path and practical guidance for enterprises to implement green innovation more effectively by relying on their directors’ networks and increasing their own openness

Implications of COVID-19: a meta-synthesis review of the psychological experience in managing the frontline nurses based on the JBI-SUMARI System

The global COVID-19 pandemic is spreading rapidly, which creating pressure and challenges for nursing workers. The future epidemic prevention and control, mental health intervention and nursing management research were significant. The purpose of this research was to examine the psychological experience of front-line nurses responsible for nursing infected patients at the early stage of the global pandemic of COVID-19. The studies describing the psychological experience of first-line clinical nurses in the early stage of the COVID-19 pandemic. The subjects and narrative statements were extracted from the literature of APAPsyArticles, CINAHL, MEDLINE, Scopus, JBI, Web Of Science, Cochrane Library, CNKI, Wanfang Database, VIP Database, CBM Database as well as using the standards of the Australian JBI Evidence-based Health Care Center, the QARI system, and the SUMARI data extraction tool. The results showed that there are three outcomes of the synthesis: positive mental state, negative mental state, and demands/expectations. Positive and negative emotions of nurses coexist in the front line of the clinical outbreak. Nursing managers should pay attention to nurses' demands and expectations and encourage front-line nurses' psychological adaptation to changes in the working environment. Government, media and the public should fulfill their social responsibilities in eliminating the social stigma of COVID-19