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Browsing Urban Institute Ireland Research Collection by Title

Browsing Urban Institute Ireland Research Collection by Title

Now showing items 86-105 of 151

Leachability and leaching patterns from aluminium-based water treatment residual used as media in laboratory-scale engineered wetlands

Babatunde, A.O. ; Zhao, Y.Q. (Springer, 2010-08)

Concept and purpose Virtually all water treatment facilities worldwide generate an enormous amount of water treatment residual (WTR) solids for which environmentally-friendly end-use options are continually being sought ...
Micro vs. macro models for predicting building damage underground movements

Truong Hong, Linh ; Laefer, Debra F. (2008-11)

For over 30 years various micro and macro models have been used for analysing masonry, but no strong consensus within the structural engineering community exists as to usage. Selection remains driven by field scenarios, ...
Modeling same-direction two-lane traffic for bridge loading

O'Brien, Eugene J. ; Enright, Bernard (Elsevier, 2011-07)

Many highway bridges carry traffic in two same-direction lanes, and modeling the traffic loading on such bridges has been the subject of numerous studies. Different assumptions have been used to model multiple-presence ...
Multivariate-parameter optimization of acid blue-7 wastewater treatment by Ti/TiO2 photoelectrocatalysis via Box-Behnken design

Fu, J.F. ; Zhao, Y.Q. ; Xue, X.D. ; Li, W.C. ; Babatunde, A.O. (Elsevier, 2009-07)

The aim of this study is to obtain optimal decolourization conditions for Acid blue-7 (AB7) wastewater treatment by Ti/TiO2 photoelectrocatalysis using response surface methodology (RSM). On the basis of a three-variable ...
Need for baseline data characteristics for GIS-based disaster management systems

Laefer, Debra F. ; Koss, Alison ; Pradhan, Anu (American Society of Civil Engineers, 2006-09)

An effective disaster management system requires collection of baseline data that is comprehensive, accurate, timely, and accessible. Without these four characteristics, an effective, economical, and task-oriented disaster ...
A new multi-parallel condition assessment scale for estimating tunnel-induced damage

Laefer, Debra F. ; Conry, B. ; Murphy, D. ; Ceribasi, Seyit (2008-06)

Traditional means to predict tunnel-induced damage for large groups of potentially affected above ground structures has generally focused on creating a settlement trough and estimating subsequent building response limited ...
New possibilities for damage prediction from tunnel subsidence using aerial LiDAR data

Laefer, Debra F. ; Hinks, Tommy ; Carr, Hamish (2010-06)

Computation modelling has not been fully exploited for predicting building damage due to tunnel-induced subsidence, because of the expense and time required to create computational meshes for the vast quantity of buildings ...
A novel alum-sludge based constructed wetland system to reduce pollution effects of agricultural runoff : first results

Babatunde, A.O. ; Zhao, Y.Q. (Inderscience, 2007-01)

This paper is a research brief highlighting the development of a novel alum sludge based constructed wetland system, aimed at reducing the pollution effects of agricultural run-offs. Alum sludge is a by-product of drinking ...
On the fit of statistical and k-C* models to projecting treatment performance in a constructed wetland system

Babatunde, A.O. ; Zhao, Y.Q. ; Doyle, R.J. ; Rackard, S.M. ; Kumar, J.L.G. ; Hu, Y.S. (Taylor & Francis, 2011-04)

The objective of this study was to assess the suitability of statistical and the k-C* models to projecting treatment performance of constructed wetlands by applying the models to predict the final effluent concentrations ...
On the necessity of sludge conditioning with non-organic polymer : AOP approach

Zhao, Y.Q. ; Keogh, C. ; Tony, Maha A. (DEStech Publications, 2009-07)

Organic polymers have long been used as sludge conditioners to improve its dewaterability in sludge management practice. Although polymers can bring about a great dewatering performance of the sludge, their potential health ...
On the role of gypsum (CaSO_4.2H_2O) in conditioning and dewatering of a waterworks sludge

Zhao, Y.Q. ; Allen, Stephen ; Sun, Guangzhi (Guangzhou University, 2004)

Problems concerning the management and utilization of sludge derived from water treatment processes are still not fully solved. A common approach is direct discharge to a landfill site. This study provides experimental ...
An open source vision for HAZUS

Moffatt, Stuart ; Laefer, Debra F. (American Society of Civil Engineering (ASCE), 2010-01)
Opportunities and impediments to the use of 3D laser scanning for adjacent excavations

Laefer, Debra F. ; Carr, Hamish ; Morrish, Sean ; Kalkan, Erol (American Society of Civil Engineering (ASCE), 2006-02)

Although three-dimensional laser (3DLS) scanning has been used to document and monitor individual excavation walls and structures on a limited basis, impediments remain to its use for major infrastructure projects. This ...
Optimising photoelectrocatalytic oxidation of fulvic acid using response surface methodology

Fu, J.F. ; Zhao, Y.Q. ; Wu, Qiuli (Elsevier, 2007-06-01)

In this paper, statistics-based experimental design with response surface methodology (RSM) was employed to investigate the effect of operation conditions on photoelectrocatalytic oxidation of fulvic acid (FA) using a ...
Optimising the performance of a lab-scale tidal flow reed bed system treating agricultural wastewater

Zhao, Y.Q. ; Sun, Guangzhi ; Lafferty, C. ; Allen, Stephen (IWA Publishing, 2004)

A gravel-based tidal flow reed bed system was operated with three different strategies in order to investigate its optimal performance for the treatment of high strength agricultural wastewaters. According to the three ...
Overview of measures to control pollution of water resources

Magette, W. L. (University College Dublin, 2010)
Peat slope failure in Ireland

Boylan, Noel ; Jennings, Paul ; Long, Michael (Michael M.) (Geological Society of London, 2008-02)

Recent peat failures in Ireland in the autumn of 2003 at Pollatomish, County Mayo and Derrybrien, County Galway have focused attention on such events. However, peat failures are not a recent phenomenon with possible ...
Performance evaluation and prediction for a pilot two-stage on-site constructed wetland system employing dewatered alum sludge as main substrate

Babatunde, A.O. ; Zhao, Y.Q. ; Doyle, R.J. ; Rackard, S.M. ; Kumar, J.L.G. ; Hu, Y.S. (Elsevier, 2011-05)

Dewatered alum sludge, a widely generated by-product of drinking water treatment plants using aluminium salts as coagulants was used as main substrate in a pilot on-site constructed wetland system treating agricultural ...
Performance expectations for microcrystalline waxes for the seismic protection of art objects

Crowley, Anne ; Laefer, Debra F. (Getty Publications, 2006-05)

Use of microcrystalline waxes for the protection of ceramic art objects from seismic events is an inexpensive and relatively popular technique in museum exhibition practice (Fig. 1). Unfortunately, because of the high ...
Performance expectations of early 20th century urban American building foundations

Laefer, Debra F. (American Society of Civil Engineering (ASCE), 2008-03)

Foundation reuse is a tricky business at the best of times. For structures predating the mid-20th century, the challenge is exacerbated by the presence of a variety of foundation types, techniques, and materials no longer ...