Now showing items 1-20 of 45

  • Accumulation and detoxication responses of the gastropod Lymnaea stagnalis to single and combined exposures to natural (cyanobacteria) and anthropogenic (the herbicide RoundUp® Flash) stressors. 

    Lance, Emilie; Desprat, Julia; Holbech, Bente Frost; Gérard, Claudia; Bormans, Myriam; Lawton, Linda A.; Edwards, Christine; Wiegand, Claudia (Elsevier http://dx.doi.org/10.1016/j.aquatox.2016.05.024, 2016-05-23)
    LANCE, E., DESPRAT, J., HOLBECH, B.F., GERARD, C., BORMANS, M., LAWTON, L.A., EDWARDS, C. and WIEGAND, C. 2016.Accumulation and detoxication responses of the gastropod lymnaea stagnalis to single and combined exposures to natural (cyanobacteria) and anthropogenic (the herbicide RoundUp® Flash) stressors. Aquatic toxicology [online], 177, pages 116-124. Available from: https://dx.doi.org/10.1016/j.aquatox.2016.05.024
    Freshwater gastropods are increasingly exposed to multiple stressors in the field such as the herbicide glyphosate in Roundup formulations and cyanobacterial blooms either producing or not producing microcystins (MCs), ...
  • Archaeological medicinal earths as antibacterial agents: the case of the Basel Lemnian sphragides. 

    Photos-Jones, Effie; Edwards, Christine; Haner, F.; Lawton, Linda A.; Keane, C.; Leanord, A.; Perdikatsis, V. (Geological Society https://doi.org/10.1144/SP452.6, 2017-02-02)
    PHOTOS-JONES, E., EDWARDS, C., HANER, F., LAWTON, L., KEAN, C., LEANORD, A. and PERDIKATSIS, V. 2017. Archaeological medicinal earths as antibacterial agents: the case of the Basel Lemnian sphragides. Geological society: special publications. Geology and medicine: historical connections [online], 452, pages 141-153. Available from: https://doi.org/10.1144/SP452.6
    This paper presents the scientific investigation of three Lemnian sphragides (terra sigillata), a famed medicinal clay (earth) of antiquity, dated to the 16th-17th century, and presently in the collection of the Museum for ...
  • Bioavailability of organic contaminants in sediments. 

    Yates, Kyari (The Robert Gordon University Department of Pharmacy and Life Sciences, 2008-03)
    The bioavailability of polycyclic aromatic hydrocarbons (PAHs) and chlorobiphenyls (CBs) in sediments is largely dependent on the freely dissolved concentration of these pollutants. However, measuring these is challenging, ...
  • Cell lysis and detoxification of cyanotoxins using a novel combination of microbubble generation and plasma microreactor technology for ozonation. 

    Pandhal, Jagroop; Siswanto, Anggun; Kuvshinov, Dmitriy; Zimmerman, William B.; Lawton, Linda A.; Edwards, Christine (Frontiers Media https://doi.org/10.3389/fmicb.2018.00678, 2018-04-05)
    PANDHAL, J., SISWANTO, A., KUVSHINOV, D., ZIMMERMAN, W.B., LAWTON, L. and EDWARDS, C. 2018. Cell lysis and detoxification of cyanotoxins using a novel combination of microbubble generation and plasma microreactor technology for ozonation. Frontiers in microbiology [online], 9, article ID 678. Available from: https://doi.org/10.3389/fmicb.2018.00678.
    There has been a steady rise in the incidences of algal blooms globally, and worryingly, there is increasing evidence that changes in the global climate are leading to a shift toward cyanobacterial blooms. Many cyanobacterial ...
  • Cellulose II as bioethanol feedstock and its advantages over native cellulose. 

    Nagarajan, Sanjay; Skillen, Nathan; Irvine, John T. S.; Lawton, Linda A.; Robertson, Peter K. J. (Elsevier https://doi.org/10.1016/j.rser.2017.03.118, 2017-04-12)
    NAGARAJAN, S., SKILLEN, N.C., IRVINE, J.T.S, LAWTON, L.A. and ROBERTSON, P.K. 2017. Cellulose II as bioethanol feedstock and its advantages over native cellulose. Renewable and sustainable energy reviews [online], 77, pages 182-192. Available from: https://doi.org/10.1016/j.rser.2017.03.118
    Alternative renewable energy must emerge to sustainably meet the energy demands of the present and future. Current alternatives to fossil fuels are electricity from solar, wind and tidal energies and biofuels. Biofuels, ...
  • Comparative assessment of visible light and UV active photocatalysts by hydroxyl radical quantification. 

    Nagarajan, Sanjay; Skillen, Nathan; Fina, Federica; Zhang, Guan; Randorn, Chamnan; Lawton, Linda A.; Irvine, John T. S.; Robertson, Peter K. J. (Elsevier http://dx.doi.org/10.1016/j.jphotochem.2016.10.034, 2016-11-03)
    NAGARAJAN, S., SKILLEN, N.C., FINA, F., ZHANG, G., RANDORN, C., LAWTON, L.A., IRVINE, J.T.S. and ROBERTSON, P.K.J. 2016. Comparative assessment of visible light and UV active photocatalysts by hydroxyl radical quantification. Journal of photochemistry and photobiology A: chemistry [online], 334, pages 13-19. Available from: http://dx.doi.org/10.1016/j.jphotochem.2016.10.034
    A simple method for determining hydroxyl radical yields on semiconductor photocatalysts is highly desirable, especially when comparing different photocatalyst materials. This paper reports the screening of a selection of ...
  • A comparison of the effectiveness of TiO2 photocatalysis and UVA photolysis for the destruction of three pathogenic micro-organisms. 

    Robertson, Jeanette M. C.; Robertson, Peter K. J.; Lawton, Linda A. (Elsevier http://dx.doi.org/10.1016/j.jphotochem.2005.04.033, 2005-09)
    ROBERTSON, J. M. C., ROBERTSON, P. K. J. and LAWTON, L. A., 2005. A comparison of the effectiveness of TiO2 photocatalysis and UVA photolysis for the destruction of three pathogenic micro-organisms. Journal of Photochemistry and Photobiology A: Chemistry, 175 (1), pp. 51-56.
    TiO2 photocatalysis has demonstrated efficacy as a treatment process for water contaminated with chemical pollutants. When exposed to UVA light TiO2 also demonstrates an effective bactericidal activity. The mechanism of ...
  • Controlled periodic illumination in semiconductor photocatalysis. 

    Tokode, Oluwatosin; Prabhu, Radhakrishna; Lawton, Linda A.; Robertson, Peter K. J. (Elsevier http://dx.doi.org/10.1016/j.jphotochem.2015.12.002, 2015-12-12)
    TOKODE, O., PRABHU, R., LAWTON, L.A. and ROBERTSON, P.K.J. 2015. Controlled periodic illumination in semiconductor photocatalysis. Journal of photochemistry and photobiology A: chemistry [online], 319-320, pages 96-106. Available from: http://dx.doi.org/10.1016/j.jphotochem.2015.12.002
    Controlled periodic illumination is a hypothesis postulated in the early 1990s for enhancing the efficiency of semiconductor photocatalytic reactions. This technique has been proposed to improve photocatalytic efficiency ...
  • Degradation of microcystin-LR by aquatic bacteria 

    Ghimire, Buddhi Sagar (The Robert Gordon University School of Pharmacy and Life Sciences, 2007-06)
    Microcystins are cyclic heptapeptide toxins produced by cyanobacteria. They are potentially a threat to human and domestic animals so are of worldwide interest. Microcystin-LR is stable in various environmental conditions. ...
  • The degradation of microcystin-LR using doped visible light absorbing photocatalysts. 

    Graham, Douglas J. L.; Kisch, Horst; Lawton, Linda A.; Robertson, Peter K. J. (Elsevier http://dx.doi.org/10.1016/j.chemosphere.2009.12.003, 2010-02)
    GRAHAM, D., KISCH, H., LAWTON, L. A. and ROBERTSON, P. K. J., 2010. The degradation of microcystin-LR using doped visible light absorbing photocatalysts. Chemosphere, 78 (9), pp. 1182-1185.
    Microcystins are one of the primary hepatotoxic cyanotoxins released from cyanobacteria. The presence of these compounds in water has resulted in the death of both humans and domestic and wild animals. Although microcystins ...
  • The destruction of 2-methylisoborneol and geosmin using titanium dioxide photocatalysis. 

    Lawton, Linda A.; Robertson, Peter K. J.; Robertson, Russell F.; Bruce, Fiona G. (Elsevier http://www.elsevier.com/wps/find/journaldescription.cws_home/523066/description#description, 2003-08-08)
    LAWTON, L., ROBERTSON, P., ROBERTSON, R. and BRUCE, F., 2003. The destruction of 2-methylisoborneol and geosmin using titanium dioxide photocatalysis. Applied Catalysis B. Environmental. Volume 44 (1) pp. 9-13
    Geosmin (GSM) and 2-methylisoborneol (MIB) are semi-volatile compounds produced by cyanobacteria in surface waters. These compounds present problems to the drinking water industry and in aquaculture because they can taint ...
  • Destruction of cyanobacterial toxins by semiconductor photocatalysis. 

    Robertson, Peter K. J.; Lawton, Linda A.; Munch, Burkhard; Rouzade, Julien (Royal Society of Chemistry http://www.rsc.org/Publishing/Journals/CC/Index.asp, 1997)
    ROBERTSON, P., LAWTON, L., MUNCH, B. and ROUZADE, J., 1997. Destruction of cyanobacterial toxins by semiconductor photocatalysis. Chemical Communications. Issue 4, pp. 393-394
    The rapid destruction of microcystin, a cyanobacterial toxin, using a titanium dioxide photocatalyst is observed; the process is extremely efficient with high concentrations of toxin completely undetectable within 10–40 ...
  • Detection, analysis, and photocatalytic destruction of the freshwater taint compound geosmin 

    Bellu, Edmund (The Robert Gordon University Faculty of Health and Social Care. School of Life Sciences., 2007-04)
    A significant issue affecting the aquaculture and water industries is the presence of off-flavour compounds in water, which cause problems by imparting an undesirable earthy/musty flavour and smell to water and fish. ...
  • Development and single-laboratory validation of a UHPLC-MS/MS method for quantitation of microcystins and nodularin in natural water, cyanobacteria, shellfish and algal supplement tablet powders. 

    Turner, Andrew D.; Waack, Julia; Lewis, Adam; Edwards, Christine; Lawton, Linda A. (Elsevier https://doi.org/10.1016/j.jchromb.2017.12.032, 2017-12-28)
    TURNER, A.D., WAACK, J., LEWIS, A., EDWARDS, C. and LAWTON, L. 2018. Development and single-laboratory validation of a UHPLC-MS/MS method for quantitation of microcystins and nodularin in natural water, cyanobacteria, shellfish and algal supplement tablet powders. Journal of chromatography B [online], 1074-1075, pages 111-123. Available from: https://doi.org/10.1016/j.jchromb.2017.12.032
    A simple, rapid UHPLC-MS/MS method has been developed and optimised for the quantitation of microcystins and nodularin in wide variety of sample matrices. Microcystin analogues targeted were MC-LR, MC-RR, MC-LA, MC-LY, ...
  • The effect of pH on the photonic efficiency of the destruction of methyl orange under controlled periodic illumination with UV-LED sources. 

    Tokode, Oluwatosin; Prabhu, Radhakrishna; Lawton, Linda A.; Robertson, Peter K. J. (Elsevier http://dx.doi.org/10.1016/j.cej.2014.03.002, 2014-03-12)
    TOKODE, O., PRABHU, R., LAWTON, L.A. and ROBERTSON, P.K.J. 2014. The effect of pH on the photonic efficiency of the destruction of methyl orange under controlled periodic illumination with UV-LED sources. Chemical engineering journal [online], 246, pages 337-342. Available from: http://dx.doi.org/10.1016/j.cej.2014.03.002
    The nature of photon interaction and reaction pH can have significant impacts on semiconductor photocatalysis. This paper describes the effect of pH on the photonic efficiency of photocatalytic reactions in the aqueous ...
  • Effects of temperature and salinity on the production of cell biomass, chlorophyll-a and intra- and extracellular nodularins (NOD) and nodulopeptin 901 produced by Nodularia spumigena KAC 66. 

    Hameed, Shaista; Lawton, Linda A.; Edwards, Christine; Khan, Ajmal; Farooq, Umar; Khan, Farhan A. (Springer https://doi.org/10.1007/s10811-017-1115-5, 2017-03-18)
    HAMEED, S., LAWTON, L.A., EDWARDS, C., KHAN, A., FAROOQ, U. and KHAN, F.A. 2017. Effects of temperature and salinity on the production of cell biomass, chlorophyll-a and intra- and extracellular nodularins (NOD) and nodulopeptin 901 produced by Nodularia spumigena KAC 66. Journal of applied phycology [online], 29(4), pages 1801-1810. Available from: https://doi.org/10.1007/s10811-017-1115-5
    Nodularia spumigena is one of the dominant toxic cyanobacteria which produce blooms in the Baltic Sea, a brackish water body, particularly in late summer. Nodularia spp. are known to produce hepatotoxic nodularins (NODs) ...
  • Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water. 

    Prabhu, Radhakrishna; Hewitt, F.; Georgieva, G.; Lawton, Linda A.; Meenakshi, H. N.; Robertson, P. K. J. (IEEE https://doi.org/10.1109/OCEANSE.2017.8085011, 2017-06-19)
    PRABHU, R., HEWITT, F., GEORGIEVA, G., LAWTON, L.A., MEENAKSHI, H.N. and ROBERTSON, P.K.J. 2017. Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water. In Proceedings of the 60th MTS/IEEE OCEANS conference (OCEANS'17): a vision for sustaining our marine futures, 19-22 June 2017, Aberdeen, UK. New York: IEEE [online], article ID 8085011. Available from: https://doi.org/10.1109/OCEANSE.2017.8085011
    Photocatalytic technology using TiO2 is one of the emerging approaches for water treatment, especially as a final step to remove complex organics such as pesticides, hormones or humic acids. Titanium dioxide (TiO2) is a ...
  • Evaluation of methodology for detection and quantification of coliform bacteria and their survival in soil and water 

    Bannister, Elaine (The Robert Gordon University School of Pharmacy and Life Sciences, 2010-02)
    In Aberdeenshire, approximately 25,000 people rely on potable water from private water supplies. Many of these supplies are of questionable quality with regards to microbiological contamination, which is often due to a ...
  • Evidence for functional drift of bacterial isolates in response to cyanobacterial microcystin-lr and multiple peptide degradation in paucibacter toxinivorans. 

    Kreitz, Johanna (Robert Gordon University Faculty of Health and Social care, School of Pharmacy and Life Sciences, 2016-07-01)
    KREITZ, J. 2016. Evidence for functional drift of bacterial isolates in response to cyanobacterial microcystin-lr and multiple peptide degradation in paucibacter toxinivorans. Robert Gordon University, MPhil thesis.
    Bacterial bioremediation has been proposed as an efficient, low cost and ecologically safe method to clean vital water reservoirs from cyanobacterial peptide toxins microcystins (MCs). In previous work carried out in 2008 ...
  • Freshwater bacterial diversity, functions and stability. 

    Giaramida, Luca (Robert Gordon University School of Pharmacy and Life Sciences., 2013-05)
    Biodiversity is declining worldwide with detrimental effects on ecosystems functions and services that it sustains. The relationship between biodiversity and freshwater purification remains unclear. Freshwater purification ...