In recent years, semi-autonomous and teleoperated mobile robots have been designed implemented to perform various disinfection tasks in different environments. Since the end of 2019 new created or modified contribute needs caused by COVID-19 pandemic. Most these platforms currently use are based on means either UVC rays approved chemical products. this paper, description a robot against SARS-Co...

Salmonella and Campylobacter are generally regarded as the most important foodborne pathogens in the world. Reduction or elimination of these pathogens in the first part of the food chain (on-farm) is important to prevent disease among consumers of animal products. Rodents are frequently associated with infrastructural damages and eating or spoiling of stored feed and products, but the veterina...

We report our ten-year experience of hyperchlorination, thermal shock, chlorine dioxide, monochloramine, boilers and point-of-use filters for controlling legionella contamination in a hospital hot water distribution system. Shock disinfections were associated with a return to pre-treatment contamination levels within one or two months. We found that chlorine dioxide successfully maintained leve...

Drinking water biofilm development is affected by the available nutrient levels and the presence of disinfectants. Phosphorus is recognized as another important limiting nutrient besides organic carbon. In this study, drinking water biofilms were developed in annular reactors to examine the effects of phosphorus on the biofilm disinfections with free chlorine and monochloramine. Phosphorus addi...

This article reviews the history of ideas regarding yellow fever and ways to combat disease. Miasmatic theories, then competing germ theories were overthrown at turn from 19th 20th century when prevailed theory that guided campaigns led by Oswaldo Cruz other public health authorities. Yellow came be seen as a disease transmitted single mosquito species, with no known etiological agent, only one...