Biofilm as a threat in food production and processing facilities
dr n. tech. ANNA ŁAWNICZEK-WAŁCZYK , prof. dr hab. n. med. RAFAŁ L. GÓRNY
The development of biofilm-forming microorganisms on usable surfaces in food production and processing facilities often results in food spoilage and poses a serious threat to public health. Particularly dangerous to human health are biofilms formed by pathogenic bacteria such as Campylobacter jejuni, pathogenic strains of Escherichia coli, Listeria monocytogenes, Pseudomonas aeruginosa, Salmonella enterica, Staphylococcus aureus and yeasts of the genus Candida. The purpose of this article is to provide readers with an overview of the mechanisms of biofilm formation, the risks associated with the spread of biofilm-forming pathogens, and methods of biofilm prevention and removal in food production and processing plants.
DOI: 10.54215/BP.2022.03.6.Lawniczek-Walczyk
Cyberbullying in the workplace – based on a review of recent research
MAGDALENA WARSZEWSKA-MAKUCH
Over the past few years, technological change has radically altered the way we work. Nowadays, many employees communicate with their colleagues using new information and communication technologies. These changes also affect the area of violence at work. Research results show that workplace cyberbullying can occur at a higher intensity than traditional workplace bullying and the lack of preparation of organizations to deal with this problem can have a detrimental effect not only on the effectiveness but also on the level of employee engagement. The article attempts to explain what cyberbullying at work is, in particular focusing on the differences between this phenomenon and traditional form of violence, i.e. workplace bullying. Furthermore, the negative effects of cyberbullying on both individual employees and the organisation as a whole are presented.
DOI: 10.54215/BP.2022.03.7.Warszewska-Makuch
The impact of the use of side air supply on the efficiency of removing air pollution emission from a welding station
dr inż. TOMASZ JANKOWSKI , mgr inż. PIOTR SOBIECH
The correct design of the ventilation system at the welding station requires the determination of the welding fumes flows and the definition of the basic welding process parameters. On the basis of the review of ventilation solutions used to protect man against air pollution occurring during welding work and conducted analysis of the work environment of welders, guidelines and normative documents, it is possible to choose the best variant of air flow through the devices and local exhausts. The existing solutions for the installation of ventilation of welding stations are not fully effective in terms of capturing particles of welding dust and fumes. If they already provide a sufficiently effective removal of welding fumes, this requires the use of large exhaust air streams. Based on the test results, it was found that the lateral supply support allows to increase the capture efficiency and reduce the flow of welding fumes from the welding work zone to the upper zone. The use of supportive ventilation allowed to improve the range of effective local exhaust ventilation in the welding process.
DOI: 10.54215/BP.2022.03.8.Jankowski
