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All Outputs (107)

Volatiles from oral anaerobes (2009)
Presentation / Conference
Khalid, T., Ratcliffe, N. M., de Lacy Costello, B., Greenman, J., & Saad, S. (2009, April). Volatiles from oral anaerobes. Paper presented at BREATH 2009 International Conference on Breath and Breath Odor Research, Dortmund Germany

A Low-Cost Portable Device for Monitoring Oxygen Concentration in Breath (2009)
Presentation / Conference
Osborne, A., Osborne, D., Ratcliffe, N. M., & Smith, S. (2009, April). A Low-Cost Portable Device for Monitoring Oxygen Concentration in Breath. Paper presented at BREATH 2009 International Conference on Breath and Breath Odor Research, Dortmund, Germany

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

Chemical tessellations (2009)
Journal Article
de Lacy Costello, B., Jahan, I., Adamatzky, A., & Ratcliffe, N. M. (2009). Chemical tessellations. International Journal of Bifurcation and Chaos, 19(2), 619-622. https://doi.org/10.1142/S0218127409023238

We report a simple set of chemical reactions based on the reaction of a range of metal salts with potassium ferricyanide loaded gels that spontaneously produce complex and colorful tessellations of the plane. These reactions provide a great resource... Read More about Chemical tessellations.

Fine control and selection of travelling waves in Inorganic Pattern Forming Reactions (2009)
Journal Article
de Lacy Costello, B., Jahan, I., Ratcliffe, N. M., & Armstrong, J. (2009). Fine control and selection of travelling waves in Inorganic Pattern Forming Reactions. International Journal of Nanotechnology and Molecular Computation, 1(3), 26-36. https://doi.org/10.4018/jnmc.2009070103

Under normal reaction conditions [AlCl3 0.28-0.34M and NaOH 2.5M A.Volford et al.] spontaneous spiral and circular travelling precipitate waves were observed. We constructed a phase diagram for the reaction and identified a large controllable region... Read More about Fine control and selection of travelling waves in Inorganic Pattern Forming Reactions.

Highly sensitive room temperature sensors based on the UV-LED activation of zinc oxide nanoparticles (2008)
Journal Article
de Lacy Costello, B., Ewen, R. J., Ratcliffe, N. M., & 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), 945-952. https://doi.org/10.1016/j.snb.2008.06.055

This study describes novel work on the use of UV-light emitting diodes (LEDs) to enhance the room temperature gas sensitivity of thick film zinc oxide sensors. Sensors based on nanoparticulates of zinc oxide activated with a UV-LED of peak wavelength... Read More about Highly sensitive room temperature sensors based on the UV-LED activation of zinc oxide nanoparticles.

The characteristics of novel low-cost sensors for volatile biomarker detection (2008)
Journal Article
de Lacy Costello, B., Ewen, R. J., Ratcliffe, N. M., & Richards, M. (2008). The characteristics of novel low-cost sensors for volatile biomarker detection. Journal of Breath Research, 2(3), 037017. https://doi.org/10.1088/1752-7155/2/3/037017

For breath analyses, volatile detectors capable of sensing extremely low concentrations in the sub-ppm range are required. Novel room temperature sensors were fabricated based on ultraviolet light activation of nanoparticulate metal oxide surfaces us... Read More about The characteristics of novel low-cost sensors for volatile biomarker detection.

A comparative study of the analysis of human urine headspace using gas chromatography-mass spectrometry (2008)
Journal Article
Smith, S., Burden, H., Persad, R., Whittington, K., de Lacy Costello, B., Ratcliffe, N. M., & 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. https://doi.org/10.1088/1752-7155/2/3/037022

First-void urine samples were obtained from 24 elderly, asymptomatic men (median age 62.9 years). The headspace above pH adjusted urine samples were extracted using a carboxen/polydimethylsiloxane solid phase micro-extraction fibre and the volatile o... Read More about A comparative study of the analysis of human urine headspace using gas chromatography-mass spectrometry.

An analysis of volatiles in the headspace of the faeces of neonates (2008)
Journal Article
Ewen, R., de Lacy Costello, B., Ewer, A. K., Garner, C. E., Probert, C. S., Ratcliffe, N. M., & Smith, S. (2008). An analysis of volatiles in the headspace of the faeces of neonates. Journal of Breath Research, 2(3), 037023. https://doi.org/10.1088/1752-7155/2/3/037023

A gas chromatography/mass spectrometry (GCMS) analysis of the headspace from the faeces of neonates was undertaken to record the volatiles associated with preterm babies on a neonatal unit. The compounds ethanol, acetone, 2-ethyl-1-hexanol, 3-methylb... Read More about An analysis of volatiles in the headspace of the faeces of neonates.

A sensor system for monitoring the simple gases hydrogen, carbon monoxide, hydrogen sulfide, ammonia and ethanol in exhaled breath (2008)
Journal Article
de Lacy Costello, B., Ewen, R. J., & Ratcliffe, N. M. (2008). A sensor system for monitoring the simple gases hydrogen, carbon monoxide, hydrogen sulfide, ammonia and ethanol in exhaled breath. Journal of Breath Research, 2(3), https://doi.org/10.1088/1752-7155/2/3/037011

A sensor array system was constructed incorporating electrochemical sensors for hydrogen, carbon monoxide, hydrogen sulfide and ethanol, a ceramic sensor for total volatiles and a dye-based optical ammonia sensor. The system was calibrated using stan... Read More about A sensor system for monitoring the simple gases hydrogen, carbon monoxide, hydrogen sulfide, ammonia and ethanol in exhaled breath.

Detection of disease by analysis of emissions (2008)
Patent
Probert, C. S. J., & Ratcliffe, N. M. (2008). Detection of disease by analysis of emissions. 1949852

A method of determining the cause of disease is described, which method uses the detection of "signature" or "fingerprint" volatile compounds in an emission, especially flatus, from a patient.

Identification of Campylobacter infection in chickens from volatile faecal emissions (2008)
Journal Article
Garner, C. E., Smith, S., Elviss, N. C., Humphrey, T. J., White, P., Ratcliffe, N. M., & Probert, C. S. (2008). Identification of Campylobacter infection in chickens from volatile faecal emissions. Biomarkers, 13(4), 413-421. https://doi.org/10.1080/13547500801966443

Volatile organic compounds from chicken faeces were investigated as biomarkers for Campylobacter infection. Campylobacter are major poultry-borne zoonotic pathogens, colonizing the avian intestinal tract. Chicken faeces are the principal source of co... Read More about Identification of Campylobacter infection in chickens from volatile faecal emissions.

A study of methods for evaluating the integrity of plate type heat exchangers used in the dairy industry (2007)
Journal Article
Dowman, A. A., & Ratcliffe, N. M. (2007). 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), 30-20. https://doi.org/10.1111/j.1471-0307.2000.tb02650.x

An overview of leak testing methods for heat exchangers is presented. The problems associated with the presence of residual liquid during testing were assessed as it was shown experimentally that complete drainage of plate type heat exchangers is ver... Read More about A study of methods for evaluating the integrity of plate type heat exchangers used in the dairy industry.

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

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

This book describes how the analysis of the trace gases in exhaled breath can be used for non-invasive clinical diagnosis of disease and for monitoring the effectiveness of therapy. This approach offers an important addition to the diagnostic techniq... Read More about Rapid diagnosis of gastro-intestinal infections using faecal odour.

Voronoi diagrams generated by regressing edges of precipitation fronts (2004)
Journal Article
Hantz, P., de Lacy Costello, B., & Ratcliffe, N. M. (2004). Voronoi diagrams generated by regressing edges of precipitation fronts. Journal of Chemical Physics, 120(5), 2413-2416. https://doi.org/10.1063/1.1635358

The Voronoi diagram generated by regression edges of precipitation fronts was analyzed. In the reaction-diffusion system, one of the reagents penetrates into a gel by diffusion and forms a precipitate with the other reagent homogenized in the gel. It... Read More about Voronoi diagrams generated by regressing edges of precipitation fronts.