Browse by Creator

Article

de Lacy Costello, B. , Ledochowski, M. and Ratcliffe, N. M. (2013) The importance of methane breath testing: A review. To be published in Journal of Breath Research, 7 (2). ISSN 1752-7155 [In Press]

Ahmed , I. , Greenwood, R. , de Lacy Costello, B. , Ratcliffe, N. M. and Probert, C. (2013) An investigation of fecal volatile organic metabolites in irritable bowel syndrome. PLoS ONE, 8 (3). ISSN 1932-6203

Khalid, T. , Saad, S. , Greenman, J. , de Lacy Costello, B. , Probert, C. and Ratcliffe, N. M. (2013) Volatiles from oral anaerobes confounding breath biomarker discovery. Journal of Breath Research, 7 (1). ISSN 1752-7155

Raman, M. , Ahmed, I. , Gillevet, P. , Probert, C. , Ratcliffe, N. M. , Smith, S. , Greenwood, R. , Sikaroodi, M. , Lam, V. , Crotty, P. , Bailey, J. , Myers, R. and Rioux, K. (2013) Fecal microbiome and volatile organic compound metabolome in obese humans with nonalcoholic fatty liver disease. To be published in Clinical Gastroenterology and Hepatology, 11 (5). [In Press]

Ahmed, I. , Probert, C. , Ratcliffe, N. M. and Greenwood, R. (2010) W1908 diagnostic potential of volatile organic compounds in inflammatory bowel disease. Gastroenterology (supplement), 138 (5). S763.

Smith, S. , White, P. , Redding, J. , Ratcliffe, N. M. and Probert, C. S. (2010) Application of similarity coefficients to predict disease using volatile organic compounds. IEEE Sensors Journal, 10 (1). pp. 92-96. ISSN 1530-437X

Urban, I. , Ratcliffe, N. M. , Duffield, J. , Elder, G. and Patton, D. (2010) Functionalized paramagnetic nanoparticles for waste water treatment. Chemical Communications, 46. pp. 4583-4585. ISSN 1359-7345

Garner, C. E. , Ewer, A. K. , Elasouad, K. , Power, F. , Greenwood, R. , Ratcliffe, N. M. , Costello, B. d. L. and Probert, C. S. (2009) Analysis of faecal volatile organic compounds in preterm infants who develop necrotising enterocolitis: A pilot study. Journal of Pediatric Gastroenterology and Nutrition, 49 (5). pp. 559-565. ISSN 0277-2116

de Lacy Costello, B. , Jahan, I. , Adamatzky, A. and Ratcliffe, N. M. (2009) Chemical tessellations. International Journal of Bifurcation and Chaos, 19 (2). pp. 619-622. ISSN 0218-1274

de Lacy Costello, B. , Jahan, I. , Ratcliffe, N. M. and Armstrong, J. (2009) Fine control and selection of travelling waves in Inorganic Pattern Forming Reactions. International Journal of Nanotechnology and Molecular Computation, 1 (3). pp. 26-36. ISSN 1941-6138

de Lacy Costello, B. , Ewen, R. , Ratcliffe, N. M. and Richards, M. (2008) The characteristics of novel low-cost sensors for volatile biomarker detection. Journal of Breath Research, 2 (3). 037017. ISSN 1752-7155

de Lacy Costello, B. , Ewen, R. , Ratcliffe, N. M. and Richardson, M. (2008) Highly sensitive room temperature sensors based on the UV-LED activation of zinc oxide nanoparticles. Sensors and Actuators B: Chemical, 134 (2). pp. 945-952. ISSN 0925-4005

Garner, C. E. , Smith, S. , Elviss, N. C. , Humphrey, T. J. , White, P. , Ratcliffe, N. M. and Probert, C. (2008) Identification of campylobacter infection in chickens from volatile faecal emissions. Biomarkers, 13 (4). pp. 413-421. ISSN 1354-750X

Garner, C. E. , Smith, S. , Elviss, N. C. , Humphrey, T. J. , White, P. , Ratcliffe, N. M. and Probert, C. S. (2008) Identification of campylobacterinfection in chickens from volatile faecal emissions. Biomarkers, 13 (4). pp. 413-421. ISSN 1354-750X

de Lacy Costello, B. , Ewen, R. , Ewer, A. , Garner, C. , Probert , C. , Ratcliffe, N. M. and Smith, S. (2008) An analysis of volatiles in the headspace of the faeces of neonates. Journal of Breath Research, 2 (3). 037023. ISSN 1752-7155

Smith, S. , Burden, H. , Persad, R. , Whittington, K. , de Lacy Costello, B. , Ratcliffe, N. M. and Probert, C. S. (2008) A comparative study of the analysis of human urine headspace using gas chromatography–mass spectrometry. Journal of Breath Research, 2 (3). 037022. ISSN 1752-7155

Garner, C. E. , Smith, S. , de Lacy Costello, B. , White, P. , Spencer, R. , Probert, C. and Ratcliffe, N. M. (2007) Volatile organic compounds from feces and their potential for diagnosis of gastrointestinal disease. The FASEB Journal, 21 (8). pp. 1675-1688. ISSN 1530-6860

Garner, C. E. , Smith, S. , de Lacy Costello, B. , White, P. , Spencer, R. , Probert, C. and Ratcliffe, N. M. (2007) Volatile organic compounds from feces and their potential for gastrointestinal disease diagnoses. The Journal of the Federation of American Societies for Experimental Biology, 21 (8). pp. 1675-1688. ISSN 0892-6638

de Lacy Costello, B. , Sivanand, P. S. , Ratcliffe, N. M. and Reynolds, D. M. (2005) The rapid detection of methyl tert-butyl ether (MtBE) in water using a prototype gas sensor system. Water Science & Technology, 52 (8). pp. 117-123. ISSN 0273-1223

de Lacy Costello, B. , Ratcliffe, N. M. , Adamatzky, A. , Zanin, A. , Liehr, A. and Purwins, H. (2004) The formation of voronoi diagrams in chemical and physical systems: Experimental findings and theoretical models. International Journal of Bifurcation and Chaos , 14 (7). pp. 2187-2210. ISSN 0218-1274

Ewen, R. , Jones, P. R. , Ratcliffe, N. M. and Spencer-Phillips, P. T. (2004) Identification by gas chromatography-mass spectrometry of the volatile organic compounds emitted from the wood-rotting fungi Serpula lacrymans and Coniophora puteana, and from Pinus sylvestris timber. Mycological Research, 108 (7). pp. 806-814. ISSN 0953-7562

de Lacy Costello, B. , Hantz, Péter and Ratcliffe, N. M. (2004) Voronoi diagrams generated by regressing edges of precipitation fronts. The Journal of Chemical Physics, 120 (5). pp. 2413-2416. ISSN 0021-9606

Adamatzky, A. , de Lacy Costello, B. , Ratcliffe, N. M. and Melhuish, C. (2003) Experimental reaction–diffusion chemical processors for robot path planning. Journal of Intelligent and Robotic Systems, 37 (3). pp. 233-249. ISSN 0921-0296

de Lacy Costello, B. , Ewen, R. , Ratcliffe, N. M. and Sivanand, P. S. (2003) Thick film organic vapour sensors based on binary mixtures of metal oxides. Sensors and Actuators B: Chemical, 92 (1-2). pp. 159-166. ISSN 0925-4005

Campbell, S. , Ewen, R. , Ratcliffe, N. M. , Smith, J. and Teare, G. (2003) Syntheses and polymerizations of (E)-2-styrylfurans and an investigation of their electrorheological properties. Smart Materials and Structures, 12 (1). pp. 129-138. ISSN 0964-1726

de Lacy Costello, B. , Ewen, R. , Gunson, H. , Ratcliffe, N. M. , Sivanand, P. and Spencer-Phillips, P. T. (2003) A prototype sensor system for the early detection of microbially linked spoilage in stored wheat grain. Measurement Science and Technology, 14 (4). pp. 397-409. ISSN 0957-0233

Honeychurch, K. C. , Hart, J. P. , Pritchard, P. , Hawkins, S. and Ratcliffe, N. M. (2003) Development of an electrochemical assay for 2,6-dinitrotoluene, based on a screen-printed carbon electrode, and its potential application in bio-analysis, occupational and public health. Biosensors and Bioelectronics, 19 (4). pp. 305-312. ISSN 0956-5663

de Lacy Costello, B. , Ewen, R. , Guernion, N. and Ratcliffe, N. M. (2002) Highly sensitive mixed oxide sensors for the detection of ethanol. Sensors and Actuators B:Chemical, 87 (1). pp. 207-210. ISSN 0925-4005

Adamatzky, A. , de Lacy Costello, B. and Ratcliffe, N. M. (2002) Experimental reaction–diffusion pre-processor for shape recognition. Physics Letters A, 297 (5-6). pp. 344-352. ISSN 0375-9601

Guernion, N. , de Lacy Costello, B. and Ratcliffe, N. M. (2002) The synthesis of 3-octadecyl- and 3-docosylpyrrole, their polymerisation and incorporation into novel composite gas sensitive resistors. Synthetic Metals, 128 (2). pp. 139-147. ISSN 0379-6779

Guernion, N. , Ewen, R. , Pihlainen, K. , Ratcliffe, N. M. and Teare, G. (2002) The fabrication and characterisation of a highly sensitive polypyrrole sensor and its electrical responses to amines of differing basicity at high humidities. Synthetic Metals, 126 (2-3). pp. 301-310. ISSN 0379-6779

Smith, J. , Cox, P. , Ratcliffe, N. M. and Campbell, S. (2002) Conducting polymers as coatings: Electrochemical and density functional theory investigations of the polymerisation. Transactions of the Institute of Metal Finishing , 80 (2). pp. 52-55. ISSN 0020-2967

de Lacy Costello, B. , Evans, P. , Ewen, R. , Gunson, H. , Jones, P. R. , Ratcliffe, N. M. and Spencer-Phillips, P. T. (2001) Gas chromatography-mass spectrometry analyses of volatile organic compounds from potato tubers inoculated with Phytophthora infestans or Fusarium coeruleum. Plant Pathology, 50 (4). pp. 489-496. ISSN 0032-0862

Dun, C. , Blac, M. , Cowell, D. , Penaul, C. , Ratcliffe, N. M. , Spence, R. and Teare, C. (2001) Ammonia vapour in the mouth as a diagnostic marker for helicobacter pylori infection: Preliminary 'proof of principle' pharmacological investigations. British Journal of Biomedical Science, 58 (2). pp. 66-75. ISSN 0967-4845

Guernion, N. , Ratcliffe, N. M. , Spencer-Phillips, P. T. and Howe, R. (2001) Identifying bacteria in human urine: Current practice and the potential for rapid, near-patient diagnosis by sensing volatile organic compounds. Journal of Clinical Chemistry and Laboratory Medicine, 39 (10). pp. 893-906. ISSN 1434-6621

Hawkins, S. and Ratcliffe, N. M. (2000) A study of the effects of acid on the polymerisation of pyrrole, on the oxidative polymerisation of pyrrole and on polypyrrole. Journal of Materials Chemistry, 9 (9). pp. 2057-2062. ISSN 0959-9428

de Lacy Costello, B. , Ewen, R. , Gunson, H. , Ratcliffe, N. M. and Spencer-Phillips, P. T. (2000) The development of a sensor system for the early detection of soft rot in stored potato tubers. Measurement Science and Technology, 11 (12). p. 1685. ISSN 0957-0233

Dowman, A. and Ratcliffe, N. M. (2000) A study of methods for evaluating the integrity of plate type heat exchangers used in the dairy industry. International Journal of Dairy Technology, 53 (1). pp. 13-20. ISSN 1471-0307

de Lacy Costello, B. , Evans, P. , Ewen , R. , Gunson, H. , Ratcliffe, N. M. and Spencer-Phillips, P. T. (1999) Identification of volatiles generated by potato tubers (Solanum tuberosum CV : Maris Piper) infected by erwinia carotovora, bacillus polymyxa and arthrobacter sp. Plant Pathology, 48 (3). pp. 345-351. ISSN 0032-0862

Jones, P. , Ewen, R. and Ratcliffe, N. M. (1998) Simple methods for the extraction and identification of amine malodurs from spoiled foodstuffs. Journal of Food Composition and Analysis, 11 (3). pp. 274-279. ISSN 0889-1575

Hawkins, S. , Ratcliffe, N. M. and Sagastizabal, A. (1998) The use of thin silver films for the detection of low concentrations of hydrogen sulphide. Analytica Chimica Acta, 359 (1-2). pp. 125-132. ISSN 0003-2670

de Lacy Costello, B. , Evans, P. , Ewen, R. , Honeybourne, C. and Ratcliffe, N. M. (1996) Novel composite organic–inorganic semiconductor sensors for the quantitative detection of target organic vapours. Journal of Materials Chemistry, 6 (3). pp. 289-294. ISSN 0959-9428

Evans, P. , Smith , J. , Ratcliffe, N. M. and Campbell, S. (1996) Synthesis and gas sensing properties of poly[tetra(pyrrol-1-yl)silane]. Journal of Materials Chemistry, 6 (3). pp. 295-299. ISSN 0959-9428

Smith, J. , Ratcliffe, N. M. and Campbell, S. (1995) Polyheterocycles containing alkene spacer linkages Part II. Synthesis and polymerization of (E)-2-styrylthiophenes and (E)-2-styrylpyrrole. Synthetic Metals, 73 (2). pp. 171-182. ISSN 0379-6779

Smith, J. , Cox, P. , Campbell, S. and Ratcliffe, N. M. (1995) Application of density functional theory in the synthesis of electroactive polymers. Journal of the Chemical Society, Faraday Transactions , 91 (15). pp. 2331-2338. ISSN 0368-1769

Smith, J. , Campbell, S. , Dunleavy, M. and Ratcliffe, N. M. (1994) Polyheterocycles containing alkene spacer linkages Part I. Synthesis and electropolymerization of 3-styrylthiophenes. Synthetic Metals, 63 (3). pp. 233-243. ISSN 0379-6779

Ratcliffe, N. M. (1990) The simple preparation of a conducting and transparent polypyrrole film. Synthetic Metals, 38 (1). pp. 87-92. ISSN 0379-6779

Ratcliffe, N. M. (1990) Polypyrrole-based sensor for hydrazine and ammonia. Analytica Chimica Acta, 239. pp. 257-262. ISSN 0003-2670

Barton, J. , Buhaenko, M. , Moyle, B. and Ratcliffe, N. M. (1988) A promising material for non-linear optics: Observation of second harmonic generation from 4-[N-(4-carboxypentyl)-N-methylamino]-4′-nitrostilbene-coated substrates. Journal of the Chemical Society, Chemical Communications (7). pp. 488-489. ISSN 0368-1769

Jones, C. , Petty, M. , Roberts, G. , Davies, G. , Yarwood, J. , Ratcliffe, N. M. and Barton, J. (1987) IR studies of pyroelectric Langmuir-Blodgett films. Thin Solid Films, 155 (2). pp. 187-195. ISSN 0040-6090

Smith, G. , Ratcliffe, N. M. , Roser, S. and Daniel, M. (1987) Pyroelectric behaviour of Langmuir-Blodgett films containing polar chromophores. Thin Solid Films, 151 (1). pp. 9-15. ISSN 0040-6090

Smith, G. , Daniel, M. , Barton, J. and Ratcliffe, N. M. (1985) Pyroelectric activity in non-centrosymmetric Langmuir-Blodgett multilayer films. Thin Solid Films, 132 (1-4). pp. 125-134. ISSN 0040-6090

Book Section

Spencer-Phillips, P. T. , Wallington, A. , Kockenberger, W. , Gunson, H. and Ratcliffe, N. M. (2006) Post-harvest spoilage of wheat grains: Malodour formation and the infection process. In: Bailey, M. , Lilley, A. K. , Timms-Wilson, T. and Spencer-Phillips, P. T. , eds. (2006) Microbial Ecology of Aerial Plant Surfaces. First. Wallingford: CAB International, pp. 287-303. ISBN 9781845930615

de Lacy Costello, B. , Ewen, R. , Garner, K. , Probert, C. , Ratcliffe, N. M. and Smith, S. (2005) Rapid diagnosis of gastro-intestinal infections using faecal odour. In: Amann, A. and Smith, D. , eds. (2005) Breath Analysis For Clinical Diagnosis And Therapeutic Monitoring. World Scientific Publishing Company, pp. 429-436. ISBN 9789812562845

de Lacy Costello, B. , Ewen, R. , Gunson, H. , Ratcliffe, N. M. and Spencer-Phillips, P. T. (2001) The use of a minimal number of vapour sensors for the assessment of food quality. In: Clark, S. , Thompson, K. , Keevil, C. and Smith, M. , eds. (2001) Rapid Detection Assays. Royal Society of Chemistry, pp. 148-152. ISBN 0854047794

Abbass, A. , de Lacy Costello, B. , Cooper, L. , Evans, P. , Ewen, R. , Hart, J. and Ratcliffe, N. M. (1999) A pilot-plant study of an automated quality control electronic nose for the monitoring of dry cured hams. In: Hurst, W. , ed. (1999) Electronic Noses & Sensor Array Based Systems - Design & Applications, Fifth International Symposium Proceedings. Pennsylvania, USA: CRC Press, pp. 211-224. ISBN 9781566767804

Conference or Workshop Item

Abuelnnor, N. , Jones, P. , Ratcliffe, N. M. , de Lacy Costello, B. and Spencer-Phillips, P. T. (2010) Investigation of the semiochemicals of confused flour beetle Tribolium confusum Jaquelin du Val and grain weevil Sitophilus granarius (L.) in stored wheat grain and flour. In: 10th International Working Conference on Stored Product Protection, Estoril Congress Center, Portugal, 27 June - 2 July 2010 , Estoril Congress Center, Portugal, 27 June - 2 July 2010. Proceedings of the 10th International Working Conference on Stored Product Protection,Julius-Kühn-Archiv : Julius-Kühn-Archiv, pp. 72-75

de Lacy Costello, B. , Ewen, R. , Garner, C. , Greenwood, R. , Osborne, A. , Probert, C. , Ratcliffe, N. M. and Smith, S. (2009) Analyses of volatile organic compounds to diagnose clostridium difficile and campylobacter. In: BREATH 2009 International Conference on Breath and Breath Odor Research, Dortmund, Germany, 26-30 April 2009.

Khalid, T. , Ratcliffe, N. M. , de Lacy Costello, B. , Ewen, R. , White, P. , Shenoy, A. and Probert, C. (2009) Analysis of volatile organic compounds in exhaled breath from liver cirrhotics. In: BREATH 2009 International Conference on Breath and Breath Odor Research, Dortmund, Germany, 26-30 April 2009.

Khalid, T. , Ratcliffe, N. M. , de Lacy Costello, B. , Greenman, J. and Saad, S. (2009) Volatiles from oral anaerobes. In: BREATH 2009 International Conference on Breath and Breath Odor Research, Dortmund Germany, 26-30 April 2009.

de Lacy Costello, B. , Ewen, R. , Garner, K. , Probert, C. , Ratcliffe, N. M. and Stevens, S. (2009) The measurement of breath volatiles for correlation with blood glucose levels and an assessment of their usefulness in diagnosing and managing diabetes. In: BREATH 2009 International Conference on Breath and Breath Odor Research, Dortmund, Germany, 26-30 April 2009.

Stevens, S. , de Lacy Costello, B. , Ewen, R. , Khalid, T. , Probert , C. and Ratcliffe, N. M. (2009) 'A simple, low-cost device for the collection of volatile organic compounds in patients' breath and the hospital bedside. In: BREATH 2009 International Conference on Breath and Breath Odor Research, Dortmund, Germany, 26-30 April 2009.

Honeychurch, K. C. , Hart, J. P. , Pritchard, P. , Hawkins, S. and Ratcliffe, N. M. (2002) Electrochemical behaviour of 2,6-dinitrotoluene at a screen-printed sensor and its possible application in occupational hygiene and environmental studies. In: Biosensors 2002, Kyoto, Japan, 2002.

Honeychurch, K. C. , Hart, J. P. , Pritchard, P. , Hawkins, S. and Ratcliffe, N. M. (2002) Voltammetric behaviour of 2,6-dinitrotoluene at a screen-printed carbon electrode and its possible redox mechanisms. In: Electrochem 2002, Preston, UK, 2002.

Patent

Ratcliffe, N. M. , de Lacy Costello, B. , Ewen, R. and Probert, C. (2012) A diagnostic apparatus for analysing a sample to diagnose disease. University of the West of England / University of Bristol. 10788038.

Lam, J. , Ratcliffe, N. M. and Smith, S. (2011) Method and apparatus for monitoring gas concentration in a fluid. Airbus ltd. US 20090141280 A1.

Ratcliffe, N. M. , de Lacy Costello, B. , Ewen, R. and Probert, C. (2011) A diagnostic apparatus for analysing a sample to diagnose disease. University of the West of England/ University of Bristol. EP2010/067859.

Ratcliffe, N. M. , de Lacy Costello, B. and Richards, W. (2010) Gas sensor. University of the West of England. US20110259080 / WO2009037289A1.

Probert, C. S. J. and Ratcliffe, N. M. (2008) Detection of disease by analysis of emissions. University of Bristol. 08103463.

Ratcliffe, N. M. , Teare, C. , Dunn, C. , Cowell, D. , Penault, C. , Chambers, P. and Black, M. (2003) Detection of helicobacter pylori. University of the West of England / University of Bristol / Hypoguard Ltd. 09/903,902.

Ratcliffe, N. M. (1992) Preparation of conductive films. British Aerospace Public Limited Company. EP0411793A2.

Ratcliffe, N. M. (1991) Preparation of conductive films and their use as gas sensors. British Aerospace Public Limited Company. EP0411793A3 / US5089294.

Smith, G. , Daniel, M. , Barton, J. and Ratcliffe, N. M. (1987) Langmuir blodgett films. THE SECRETARY OF STATE FOR DEFENCE IN HER BRITANNI . PCT/GB1986/000371 .