April - June 2020
Webinar Series on Cleaning Challenges posed by the COVID-19 Pandemic
When: every Friday at 11:30 starting 24th April
Note: webinars are open to all
Webinar recordings: available here
- Following weeks: TBA
- 22nd May: Ivan Parkin (University College London)
Title: Photo Disinfection of Surfaces.
Abstract: The talk will cover a cross section of the work we have done for the last 20 years on light activated antimicrobial coatings. It will cover both hard and soft surfaces- from glass to polymers. It will show how these surfaces can function under normal room lighting and be effective at inactivating a range of microbes from Bacteria to Fungi to Viruses. It will show how in one system the mode of action is formation of hydrogen peroxide under the action of room lighting and humidity. The talk will also cover chemical reagents such as copper and silver in inactivating microbes.
- 15th May: Catherine Noakes (University of Leeds)
Title: Modelling the control of airborne infection by ventilation and GUV disinfection
Abstract: Transmission of infection is conventionally regarded as either a human behaviour or a medical challenge, yet the process can also be influenced significantly by the environment. This is particularly the case for airborne transmission of infection where the dispersion, transport and survival of microorganisms in the air depends on the complex fluid dynamics of aerosol release together with the airflow characteristics and environmental conditions in the room. Environmental design has long been advocated as a key part of controlling airborne infection, yet there are numerous challenges in establishing what are the right technologies and approaches, and in understanding how effective the measures might be. As there is emerging evidence that SARS-CoV-2 may be transmitted by air under certain conditions, it is important that these measures are considered in both healthcare and the wider environment. This talk introduces the complexity of airborne infection and considers what we know about SARS-CoV-2 so far. Engineering and modelling strategies that can be used to understand mechanisms for airborne infection are discussed to consider the role of ventilation approaches and the potential application for germicidal ultraviolet (GUV) disinfection. The talk discusses how research findings may be used to support practice, and where there are needs for further research to both understand fundamental processes and the real performance of engineering solutions.
- 1st May: Jonathan Reid (University of Bristol)
Title: SARS-CoV-2: Aerosols, droplets and airborne transmission
- 24th April: 1st part, Keith Paver (virologist, MMU); 2nd part, Dudley Hewlett and Jonathan Jones (DASA, Dstl)
Title (K. Paver): Virus survival outside the body, the epidemiologist's nightmare
Abstract: Viruses are obligate parasites of living cells and are reliant on their host species for their continued survival. Once outside the body their viability will fall over time until they are no longer capable of causing infection. This denaturation may occur for diverse reasons but the factors affecting viral survival are partly due to the basic structure and characteristics of the virus, but perhaps even more importantly, depend on the environment into which they are released.
Title (D. Hewlett & J. Jones): DASA – COVID19 Fast Track
Abstract: An overview of the Defence and Security Accelerator function and its current involvement in the national response to COVID-19. A brief description of DASA’s current COVID19 Fast Track call will be given.
9 June 2017
9:00 - 10:30am
The Science of cleaning in place, illustrated by cleaning by impinging jets
Ian Wilson, Professor of soft solids and surfaces
Department of Chemical Engineering and Biotechnology, University of Cambridge