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Research Repository UCD
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7846 Publications
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  • Hydrogen sulphide gas production from spent mushroom compost under field and laboratory conditions

    Velusami, Balasubramanian; Adjeh, Bolanle; Curran, Thomas P.; Grogan, Helen (2011)
    Hydrogen sulphide (H2S) gas production was monitored during the disturbance of four heaps of Spent Mushroom Compost (SMC) that were stored for up to 12 months either outdoors or under cover (indoors). QRAE (www.raesystems.eu) and ITX (www.indsci.com) gas monitors with data logging facilities were used to measure the 10-second average concentration of H2S released into the air above the heaps of SMC as they were being disturbed. The highest concentrations of up to 2083 ppm were ...

    A non-linear operator based method for harmonic feature extraction from speech signals

    Kavanagh, Darren F.; Boland, Frank (2007)
    An important pre-processing stage in speech recognition systems is that of extracting phonetically pertinent acoustic features from the speech signal. These features form the basis for discriminative classification and serve as cues for the identification of phonetic events in speech. The paper addresses this by presenting a novel method for the classification of harmonic (short-term periodic) and non-harmonic segments in speech signals. Classification is accomplished by proposing two new fea...

    Treatment of fluoroacetate by a Pseudomonas fluorescens biofilm grown in membrane aerated biofilm reactor

    Heffernan, Barry; Murphy, Cormac D.; Syron, Eoin; Casey, Eoin (2009)
    Fluorinated organic compounds have widespread applications, and their accumulation in the environment is a concern. Biofilm reactors are an effective technology for the treatment of contaminated wastewater, yet almost no research has been conducted on the effectiveness of biofilms for the biodegradation of fluorinated aliphatic compounds. In this paper we describe experiments undertaken to investigate the degradation of fluoroacetate using a membrane aerated biofilm reactor (MABR) by Pseudomo...

    The Bishop's Role in Two Non-Catholic States: The Cases of Ireland and Turkish Hungary Considered

    Ó hAnnracháin, Tadhg (2015)
    This paper contrasts contrast the very different roles played by the Catholic hierarchy in Ireland, on the one hand, and Turkish-occupied Hungary, on the other, in the movement of early modern religious reform. It suggests that the decision of Propaganda Fide to adopt an Episcopal model of organisation in Ireland after 1618, despite the obvious difficulties posed by the Protestant nature of the state, was a crucial aspect of the consolidation of a Catholic confessional identity within the isl...

    Residential exposure to port noise: a case study of Dublin, Ireland

    Murphy, Enda; King, Eoin A. (2012)
    The World Health Organisation (WHO) has recently acknowledged that contrary to the trend for other environmental stressors, noise exposure is increasing in Europe. While a considerable amount of research has recently been undertaken assessing the extent of noise from road, rail and air transportation in the EU, relatively little research has been conducted internationally assessing the extent of environmental noise within the vicinity of major European shipping ports. Accordingly, this paper...
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