a trend of significant increase in municipal solid waste generation has been recorded worldwide. this has been found due to over population growth rate, industrialization, urbanization and economic growth. consumerism speed has been found very high covering around more then 50% of total population since last decade due to higher economic growth, which has ultimately resulted in increased solid ...

Introduction: Given the high spread and mortality rate of COVID-19, it is of great importance to find solutions to prevent it. In this study, the role of physical activity and body mass index in the development or prevention of COVID-19 was investigated. Materials and methods: In this cross-sectional study, participants included 155 patients with coronavirus selected as the experimental group ...

Objective: Epidemiological evidence shows that the prevalence of patients with comorbidity of diabetes mellitus (DM), in Coronavirus disease 2019 (COVID-19) is remarkable and they have poor prognosis. We aimed to investigate the comorbidity of diabetes and covid-19 in positive Polymerase Chain Reaction people in Yazd. Materials and Methods: This retrospective cohort study included data of 570 ...

The material recovery methods used by dust-yards in early 19 th century London, England and the conditions that led to their development, success and decline are reported. The overall system developed in response to the market value of constituents of municipal waste, and particularly the high coal ash content of household 'dust.' The emergence of lucrative markets for 'soil' and 'breeze' produ...

Background The novel coronavirus (SARS-CoV-2 [2019-nCoV]) is the origin of several cases of pneumonia in Wuhan, Hubei province, China. According to the reported data, children are less common to be infected by COVID-19. Besides, their mortality rate is almost zero. Case Presentation In this article, we investigated six childr...