Abstract.Harvested rainwater has become an inseparable part of sustainable development a long before term 'sustainability' appeared. Even though domestic systems have been investigated to some extent, there are few recent studies of larger non-domestic systems used in public and commercial buildings, especially in Russia. This paper aims to describe a combined performance evaluation of a configured rainwater harvesting system for a specific study case of public building located in St. Petersburg. The careful analyses of empirical and theoretical data set was applied while calculating water demand, optimal storage sizing and subsequent economical juxtaposition of scenarios. The results provide useful information for optimizing the economic response of every specific scenario in terms of payback period, initial costs and end use.
The aim of the study is to analyze the perception of health workers of their security in the workplace and their assessment of the organization of the labor process healthcare facilities in the context of the COVID-19 pandemic. Methods: For the solution, a cross-sectional online survey was conducted among healthcare workers. The study included 269 people and was analyzed in the R software environment. Results and discussion: It is known that healthcare workers are at risk which are still in direct contact with COVID-19 patients, as well as those whose contact with such patients is not recorded. Differences in subjective assessments of the impact of the pandemic among these groups of health care workers were found. Overall, 84.8% of respondents expressed concern about the COVID-19 pandemic, with 3 times the likelihood of concern in the contact group. The most frequent cause of concern was isolation from family and social environment 76.2%, while the risk of actually infecting oneself or family members worried respondents 2 times less frequently. There is no statistical reason to believe that respondents were more likely to limit social contacts (53.2%) because they considered their work environment «dangerous. Even fewer health care workers tried to isolate themselves from their relatives and friends (37.9%). If such measures were taken, they were statistically more likely to be taken by health care workers in direct contact with COVID-19 patients. The majority of participants rated above-average availability of avoidance of work duties. 5% of respondents indicated that they tried to take time off to avoid going to work because of COVID-19 concerns. Research in this area will help expand the provision of information about the psychological impact of the threat of SARS-CoV-2 infection to health care workers in general, and otorhinolaryngology care in particular.
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