Andy Sleigh is Lecturer in Fluid Mechanics in the School of Civil Engineering at the University of Leeds. He has 9 years post doctoral research experience in the numerical modelling of fluid flows, and has authored and co-authored a number of papers in this field. He has considerable experience of a variety of computational fluid dynamics (CFD) packages and is an active member of the EPSRC Computation Fluid Dynamics Club and the International Association for Hydraulic Research (IAHR).

Dr. L Fletcher is a research fellow in the School of Civil Engineering at the University of Leeds . She has 8 years postdoctoral experience as an applied microbiologist within the field of pathogen control. She is currently lead microbiologist in the PCE currently investigating the susceptibility of nosocomial pathogens to negative air ions. Previous experience includes UV disinfection, bioaerosol production during composting and more generally the microbiology associated with waste treatment processes.

Dr. Cath Noakes is a lecturer in Building Services Engineering and has expertise in mathematical modelling including computational fluid dynamics (CFD) simulations. Her research interests lie in understanding how the design of an environment and the indoor air flows influence the transport and control of airborne pathogens. She has developed CFD models to evaluate engineering controls of airborne infection in hospital environments including the effect of partitions and ventilation design (ref Lima), coupling airflow and biological models of UVGI disinfection and the performance of negative air ionisers. She is also interested in modelling the risk of infection in indoor environments and has developed models to link airborne transmission with classical epidemic models as well as considering stochastic and proximity effects.

Katherine Roberts is a PhD student in the School of Civil Engineering, Leeds University. Her research involves investigating the risk posed by aerosol particles produced by various activities undertaken in hospital wards. Previous work includes completing a research Masters in Civil Engineering, Leeds University , which investigated the use of UV light to disinfect airborne pathogens with respect to bioterrorism.

Abigail is carrying out her PhD in CFD modelling of pathogen transport due to human activity. Previous to this she completed her Masters degree in Architectural Engineering and worked abroad in structural engineering and the development of balcony connection systems with improved thermal properties.

Prof Duncan Mara: D.D.Mara@leeds.ac.uk

Prof Mara has interests in public health and environmental engineering, especially tropical public health engineering and tropical sanitary microbiology (water, wastes and health in developing countries; low-cost wastewater treatment and reuse). For further information see his web page.

Prof Ed Stentiford: E.I.Stentiford@leeds.ac.uk

Two current theme of Prof Stentifords research are in the following areas :

• Composting process optimisation in which there are a series of projects running which cover process aspects such as: sanitisation, stabilisation, design and rate of biodegradation.
• Bioaerosol generation, dispersion and control
  The mechanisms which govern the growth of microorganisms such as Aspergillus fumigatus during waste treatment are being studied. This study extends to site work to determine conditions which promote generation and dispersion and also systems which can be used, such as biofilters, to restrict the rate of release. For further information see his web page.