Selected recent articles are presented here with a brief description of their subject. Below these are full lists of journal and conference publications.

1. Air ionisation and colonisation/infection with methicillin-resistant Staphylococcus aureus and Acinetobacter species in an intensive care unit. Kerr, K.G.; Beggs, C.B.; Dean, S.G.; Thornton, J.; Donnelly, J.; Todd N.J.; Sleigh, P.A.; Qureshi, A.; Taylor, C.C. (2006) Intensive Care Medicine, 32(2), pp.315-317.

This paper describes the outcomes of a clinical trial in an intensive care ward in which a number of industrial ionisers were placed. The results shown almost complete elimination of one infection which was previously endemic on that ward. Interestingly infections caused by other organisms remained unchanged.

2. Use of CFD Analysis in Modifying a TB Ward in Lima , Peru . Noakes, C.J.; Sleigh, P.A.; Escombe, A.R.; Beggs, C.B. (2006) Indoor and Built Environment, 15(1), pp.41-47.

   This paper has arisen out of a collaborative link with an Imperial College Welcome Trust project based in Lima, Peru. As part of a wider study into preventing nosocomial TB transmission, a CFD study was carried out to examine how changes in the design of a mechanically ventilated TB ward may reduce the risk of infection for patients, visitors and healthcare workers. The study demonstrated how physical partitions and changes to the ventilation system design may significantly reduce the spread of bioaersols between zones. This information was used by architects and engineers to remodel the ward and its ventilation system.

3. Bioaerosol Production on a Respiratory Ward. Roberts, K.; Hathway, E.A.; Fletcher, L.A.; Beggs, C.B.; Elliott M.W.; Sleigh, P.A. (2006) Indoor and Built Environment, 15(1), pp.35-40.

This reports on a preliminary hospital based study taking measurement designed to identify the bioburden of the air in hospital wards. It also looks at the relationship between activities in the ward and their effects on the level of airborne organisms.

4. Acinetobacter spp. and the Clinical Environment. Beggs, C.B.; Kerr K.G.; Snelling A.M.; Sleigh, P.A. (2006) Indoor and Built Environment, 15(1), pp.19-24.

   The proliferance of Acineterbacter spp. in hospitals and the significance of this is examined.

5. Health risks in wastewater irrigation: Comparing estimates from quantitative microbial risk analyses and epidemiological studies. Mara, D.D.; Sleigh, P.A.; Blumenthal U.J.; Carr R.M. (2006) Journal of Water and Health, pp.x-xx.

Monte Carlo methods are used to assess the risk to consumers of lettuce that have been irrigated using wastewater. Assessments are made to show the allowable levels of contamination in wastewater such that the risk to health is acceptable.

6. Modelling the Transmission of Airborne Infections in Enclosed Spaces. Noakes, C.J.; Beggs, C.B.; Sleigh, P.A.; Kerr, K.G. (2006) Epidemiology and Infection.

   This paper presents two analytical zone mixing models for evaluating the performance of upper-room ultraviolet disinfection devices. The predicted results are compared to a CFD simulation of the same room that incorporates a biological decay model of microorganisms in the presence of UV light. The study demonstrates that with the selection of appropriate mixing factors the simple models can be used with some confidence in the design of UV systems or to carry out risk assessments. However the study highlights the limitations of these models and demonstrates through CFD the complex interaction between the room airflow and UV disinfection process.

Journal Articles

• Kerr, K.G.; Beggs, C.B.; Dean, S.G.; Thornton, J.; Donnelly, J.; Todd N.J.; Sleigh, P.A.; Qureshi, A.; Taylor, C.C. (2006) Air ionisation and colonisation/infection with methicillin-resistant Staphylococcus aureus and Acinetobacter species in an intensive care unit. Intensive Care Medicine, 32(2), pp.315-317.
• Noakes, C.J.; Sleigh, P.A.; Escombe, A.R.; Beggs, C.B. (2006) Use of CFD Analysis in Modifying a TB Ward in Lima , Peru . Indoor and Built Environment, 15(1), pp.41-47.
• Roberts, K.; Hathway, E.A.; Fletcher, L.A.; Beggs, C.B.; Elliott M.W.; Sleigh, P.A. (2006) Bioaerosol Production on a Respiratory Ward. Indoor and Built Environment, 15(1), pp.35-40.
• Beggs, C.B.; Kerr K.G.; Snelling A.M.; Sleigh, P.A. (2006) Acinetobacter spp. and the Clinical Environment . Indoor and Built Environment, 15(1), pp.19-24.
• Mara, D.D.; Sleigh, P.A.; Blumenthal U.J.; Carr R.M. (2006) Health risks in wastewater irrigation: Comparing estimates from quantitative microbial risk analyses and epidemiological studies. Journal of Water and Health, pp.x-xx.
• Noakes, C.J.; Beggs, C.B.; Sleigh, P.A.; Kerr, K.G. (2006) Modelling the Transmission of Airborne Infections in Enclosed Spaces. Epidemiology and Infection.
• Beggs, C.B.; Noakes, C.J.; Sleigh, P.A.; Fletcher, L.A.; Kerr, K.G. (2005) Methodology for determining the susceptibility of airborne microorganisms to irradiation by an upper-room UVGI system. Journal of Aerosol Science.
• Banda, C.G.; Sleigh, P.A.; Mara, D.D. (2005) Escherichia coli removal in waste stabilization ponds: a comparison of modern and classical designs. Water Science and Technology, 51(12), pp.75-81.
• Noakes, C.J.; Beggs, C.B.; Sleigh, P.A. (2004) Evaluating the Performance of Upper Room UVGI Systems in Ventilated Rooms. IAQ Applications.
• Noakes, C.J.; Beggs, C.B.; Sleigh, P.A. (2004) Modelling the Performance of Upper Room Ultraviolet Germicidal Irradiation Devices in Ventilated Rooms: Comparison of Analytical and CFD Methods. Indoor and Built Environment, 6(13), pp.477-507.
• Noakes, C.J.; Fletcher, L.A.; Beggs, C.B.; Sleigh, P.A.; Kerr, K.G. (2004) Development of a numerical model to simulate the biological inactivation of airborne microorganisms in the presence of ultraviolet light. Journal of Aerosol Science, 35(4), pp.489-507.
• Horan, N.J.; Fletcher, L.A. ; Betmal, S.M. (2004) Die-off of Enteric Bacterial Pathogens During Mesophilic Anaerobic Digestion. Water Research, 38(5), pp.1113-1120.
• Beggs, C.B.; Noakes, C.J.; Sleigh, P.A.; Fletcher, L.A. ; Siddiqi, K. (2003) The transmission of tuberculosis in confined spaces: an analytical study of alternative epidemiological models. International Journal of Tuberculosis and Lung Disease, 7(11), pp.1015-1026.
• Mavroudaki, P.; Beggs, C.B.; Sleigh, P.A.; Halliday, S. (2002) The potential for solar powered single-stage desiccant cooling in southern Europe . Applied Thermal Engineering, 22(10), pp.1129-1140.
• Halliday, S.; Beggs, C.B.; Sleigh, P.A. (2002) The use of solar desiccant cooling in the UK : a feasibility study. Applied Thermal Engineering, 22(12), pp.1327-1338.
• Barton, P.; Beggs, C.B.; Sleigh, P.A. (2002) A theoretical study of the thermal performance of the TermoDeck hollow core slab system. Applied Thermal Engineering, 22(13), pp.1485-1499.
• Beggs, C.B.; Sleigh, P.A. (2002) A quantitative method for evaluating the germicidal effect of upper room UV fields. Journal of Aerosol Science, 23(12), pp.1681-1699.
• Noakes, C.J.; Thompson, H.M.; Gaskell, P.H.; Lowe, D.C.; Lowe, S.; Osborn, M.J. (2002) Heat transfer characteristics of air flotation dryers. Paper Technology, 43(10), pp.46-50.
• Noakes, C.J.; Thompson, H.M.; Gaskell, P.H.; Lowe, D.C.; Lowe, S.; Osborn, M.J. (2002) Pressure and web stability in the design of air flotation dryers. Paper Technology, 43(6), pp.34-38.
• Noakes, C.J.; Gaskell, P.H.; Thompson, H.M.; Ikin, J.B. (2002) Streak-line defect minimization in multi-layer slide coating systems. Chemical Engineering Research & Design, 80(5), pp.449-463.
• Hornsby, L.A. ; Horan, N.J. (1994) Isolation of filamentous bacteria from activated sludge using micromanipulation. Water Research, 28(9), pp.2033-2034.
• Cairns, G.; Kerr, K.G.; Beggs, C.B.; Sleigh, P.A.; Mooney, L.; Keig, P.; Donnelly, J.K. (2001) Susceptibility of Burkholderia cepacia and other pathogens of importance in cystic fibrosis to ultraviolet light. Letters in Applied Microbiology, 32(3), pp.135-138.
• Thompson, H.M.; Gaskell, P.H.; Summers, J.L.; Sleigh P.A.; Abbott, S.J. (2000) The design and simulation of industrial coating processes. 4, p.1-13.
• Kerr, K.G.; Beggs C.B.; Sleigh P.A.; Cairns G.; Donnelly J.K. (2000) Transmission of tuberculosis. Journal of Hospital Infection, 46(1), pp.77-78.
• Beggs, C.B.; Kerr, K.G.; Donnelly, J.K.; Sleigh, P.A.; Mara, D.D.; Cairns, G. (2000) An engineering approach to the control of Mycobacterium tuberculosis and other airborne pathogens: a UK hospital based pilot study. Royal Society of Tropical Medicine and Hygiene. Transactions, 94, pp.141-146

Conference Articles

• Noakes, C.J.; Beggs, C.B.; Sleigh, P.A. (2004) Effect of room mixing and ventilation strategy on the performance of upper room ultraviolet germicidal irradiation systems In: ASHRAE IAQ Conference, Tampa , USA . 15 - 17th March 2004 , American Society of Heating, Refrigeration and Air-Conditioning Engineers, Inc
• Noakes, C.J.; Beggs, C.B.; Sleigh, P.A.; Fletcher, L.A. (2004) CFD modelling of airborne microorganisms in ventilated rooms and the effectiveness of ultraviolet disinfection devices In: Proceedings of the 1st seminar on Applied Aerobiology, Murcia, Spain, 20th May 2004
• Fletcher, L.A.; Noakes, C.J.; Beggs, C.B.; Sleigh, P.A. (2004) The importance of bioaerosols in hospital infections and the potential for control using germicidal ultraviolet irradiation In: Proceedings of the 1st seminar on Applied Aerobiology, Murcia, Spain, 20th May 2004
• Sanchez-Monedero, M.A.; Fletcher, L.A. ; Stentiford, E.I.; Beggs, C.B. (2004) Novel techniques for the control of bioaerosols at waste handling and treatment facilities In: Biodegradable and Residual Waste Management edited by E K Papadimitriou, E I Stentiford, CalRecovery Europe Ltd , pp.276-283.
• Noakes, C.J.; Fletcher, L.A.; Beggs, C.B.; Sleigh, P.A.; Kerr, K.G. (2003) CFD modelling of upper-room UVGI devices In: IUVA Ultraviolet Air Treatment Conference, Chicago, 5-6th November, 2003 , International UV Association
• Thornton T.J.O.; Fletcher, L.A.; Beggs, C.B.; Elliot, M.W.; Kerr, K.G. (2004) Airborne microflora in a respiratory ward In: ASHRAE IAQ Conference, Tampa, USA, 15-17th March 2004 , American Society of Heating, Refrigeration and Air-Conditioning Engineers, Inc
• Fletcher, L.A.; Noakes, C.J.; Beggs, C.B.; Sleigh, P.A.; Kerr, K.G. (2003) The effect of relative humidity on the UV susceptibility of airborne gram negative bacteria In: IUVA Ultraviolet Air Treatment Conference, Chicago, 5-6th November, 2003 , International UV Association
• Fletcher, L.A. ; Noakes, C.J.; Beggs, C.B.; Sleigh, P.A.; Kerr, K.G. (2003) The ultraviolet susceptibility of aerosolised microorganisms and the role of photoreactivation In: 2nd International Congress of the IUVA, Vienna , 9-11th July 2003 , International UV Association
• Noakes, C.J.; Fletcher, L.A.; Beggs, C.B.; Sleigh, P.A.; Kerr, K.G. (2003) CFD analysis of the UV-C irradiation of airborne microorganisms In: 2nd International Congress of the IUVA, Vienna, 9-11th July 2003 , International UV Association
• Beggs, C.B.; Fletcher, L.A. ; Sleigh, P.A.; Kerr, K.G.; Noakes, C.J. (2003) An experimental method for determining the UV susceptibility of airborne microorganisms using an upper room UV field. In: 2nd International Congress on Ultraviolet Technologies, Vienna , 9-11th July 2003
• Beggs, C.B.; Sleigh, P.A.; Kerr, K.G.; Fletcher, L.A.; Noakes, C.J. (2003) A simple model for predicting the performance of upper-room UV air disinfection systems In: IMechE Heathcare Engineering Conference, London, 25-26th November 2003
• Kerr, K.G.; Beggs, C.B.; Sleigh, P.A.; Noakes, C.J.; Fletcher, L.A. (2003) Airborne infection in hospitals In: IMechE Heathcare Engineering Conference, London, 25-26th November 2003
• Mara, D.D.; Sleigh, P.A. (2003) Wastewater reuse: what are the likely health risks in Europe ? In: Conference on Wastewater Treatment in Constructed Wetlands, Ponds and Related Systems, University of Leipzig , Leipzig 6-7 November
• Cabanas Vargas, D.; Sleigh, P.A.; Stentiford, E.I. (2003) Modelling oxygen profiles inside the composting matrix of maturation piles In: Fourth International Conference of ORBIT Association on Biological Processing of Organics
• Horan, N.J.; Fletcher, L.A. ; Betmal, S.M. (2002) The Removal of Enteric Pathogens During Mesophilic Anaerobic Digestion of Sewage Sludge: Bench and Full-scale Experiences In: Proceedings of the Seventh Symposium on Anaerobic Digestion, Merida , Mexico , pp.246-255.
• Halliday, S.; Beggs, C.B.; Sleigh, P.A. (2001) The solar desiccant cooling cycle In: International Heat Powered Cycles Conference, Paris
• Apps, C.J.; Ikin, J.B.; Thompson, H.M. (1999) Minimisation of streak-line defects in multi-layer coating systems In: Proc. 3rd European Coating Symposium
• Sleigh, P.A.; Gaskell, P.H. (1999) A Two-dimensional Unstructured Solution Algorithm Applied to the Simulation of Dam-break Waves In: IAHR 28th Biennial Congress, Graz, Austria
• Beggs, C.B.; Kerr, K.G.; Donnelly, J.K.; Mara, D.D.; Sleigh, P.A.; Cairns, G. (1999) The optimization of UVGI air disinfection in a UK hospital building In: Indoor Air 99 (Proceedings of the IAIAS International Conference, Edinburgh, 8-13 August) , pp.659-664.

Press Articles

• Fletcher, L.A. (2004) The influence of relative humidity on the UV susceptibility of airborne gram negative bacteria. IUVA News, 6(1), pp.12-19.