Browsing Civil Engineering (Scholarly Articles) by Title
Now showing items 186-205 of 291
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Nested circulation modelling of inter-tidal zones: details of a nesting approach incorporating moving boundaries
(2010)Nested circulation models developed to date either exclude the flooding and drying process or prohibit flooding and drying of nested boundaries; they are therefore ill-suited to the accurate modelling of inter-tidal areas. ... -
Nitrate removal rate, efficiency and pollution swapping potential of different organic carbon media in laboratory denitrification bioreactors.
(Ecological Engineering, 2012-01-01)Laboratory denitrifying bioreactors, which use an organic carbon (C) rich media to enhance microbial reduction of nitrate (NO3-) to nitrogen (N) gases, are used worldwide to protect surface and groundwater. To highlight ... -
Nitrification in a vertically moving biofilm system
(Elsevier, 2006-03)A laboratory continuous feed biofilm reactor, comprising a bulk fluid reactor, a biofilm plastic module, a feed tank, and pneumatic devices and controls, was operated for a total period of 257 days, including seeding time, ... -
Nitrification in a vertically moving biofilm system.
(Journal of Environmental Management, 2006-06-01)A laboratory continuous feed biofilm reactor, comprising a bulk fluid reactor, a biofilm plastic module, a feed tank, pneumatic devices and controls, was operated for a total period of 257 days, including seeding time, to ... -
Nitrogen-limitation-induced carbon and phosphorus fluxes in anaerobic/aerobic sequencing batch reactors
(Elseiver, 2010)Enhanced biological phosphorus removal (EBPR) has been applied widely in wastewater treatment plants. However, deterioration or failure of EBPR often happens because: (i) of the dominance of glycogen-accumulating organisms ... -
A novel BIM-based process workflow for building retrofit
(Elsevier, 2022-02-06)The European Union (EU) has developed policies aimed at accelerating the retrofit of existing buildings, with the vision of a decarbonised building stock by 2050. Retrofitting of existing buildings offers significant ... -
A novel hybrid coagulation-constructed wetland system for the treatment of dairy wastewater
(Elsevier, 2022-07-29)Constructed wetlands (CWs) are a cost-effective and sustainable treatment technology that may be used on farms to treat dairy wastewater (DWW). However, CWs require a large area for optimal treatment and have poor long-term ... -
A novel hybrid coagulation-intermittent sand filter for the treatment of dairy wastewater
(Elsevier, 2022-08-06)An intermittent sand filter (ISF) is a simple and cost-effective treatment method that may be adopted on farms to treat dairy wastewater (DWW). However, the use of ISFs has been limited due to the large area required for ... -
A novel hybrid filter for the treatment of septic tank effluent
(ASCE, 2006)Intermittent sand filtration is a common and effective method for treating septic tank effluent. However, if the loading rate is too high, clogging and ponding of the sand filter surface layer can occur due to the accumulation ... -
A novel hybrid filter for the treatment of septic tank effluent.
(ASCE Journal of Environmental Engineering, 2006-06-01)Intermittent sand filtration is a common and effective method for treating septic tank effluent. However, if the loading rate is too high, clogging and ponding of the sand filter surface layer can occur due to the accumulation ... -
A novel image processing-based system for turbidity measurement in domestic and industrial wastewater
(IWA Publishing, 2018-01-19)Wastewater treatment facilities are continually challenged to meet both environmental regulations and reduce running costs (particularly energy and staffing costs). Improving the efficiency of operational monitoring at ... -
A novel method to rapidly assess the suitability of water treatment residual and crusted concrete for the mitigation of point and nonpoint source nutrient pollution
(Elsevier, 2019-07-02)Freshwater ecosystems worldwide are at risk of becoming degraded as a result of excessive inputs of phosphorus (P) associated with terrestrial activities. This study describes a novel methodology to rapidly assess the ... -
A novel reduced order model technology framework to support the estimation of the energy savings in building retrofits
(Elsevier, 2021-03-13)Energy Performance Contracting (EPC), as a tool to enhance energy efficiency of buildings, can accelerate investment in cost-effective energy conservation measures (ECMs) for existing buildings. However, there are many ... -
Novel use of peatlands as future locations for the sustainable intensification of freshwater aquaculture production - A case study from the Republic of Ireland
(Elsevier, 2019-12-10)There has been an increasing interest in enhancing freshwater aquaculture processes without hindering the progress of the Water Framework Directive. This constitutes the first study to describe a new concept in integrated ... -
Numerical investigation of reinforcement of timber elements in compression perpendicular to the grain using densified wood dowels
(Elsevier, 2021-03-27)In recent years, the construction industry has seen a greater focus on the use of sustainable construction materials to reduce the environmental impact of buildings. Timber is one such material that has seen a revival in ... -
Numerical model for steel brace members incorporating a fatigue model
(2013)The aim of this paper is to develop a robust numerical model for cold-formed steel square and rectangular structural hollow sections for use as axial loaded members in earthquake engineering applications. Pseudo-static ... -
Numerical modelling of pile foundation angular distortion
(Elsevier, 2015-05-16)In this paper, the PLAXIS 3-D Foundation finite element (FE) software package, in conjunction with the nonlinear Hardening Soil (HS) constitutive model, is employed in an extensive parametric study of the angular distortion ... -
Numerical modelling of the improvements to primary and creep settlements offered by granular columns
(Springer-Verlag, 2013)Analytical vibro-replacement design approaches typically quantify the settlement reduction using a dimensionless settlement improvement factor, defined as the ratio of the settlements without and with treatment. Most ... -
Numerical modelling to aid in the structural health monitoring of wave energy converters
(2013)A vital aspect of ensuring the cost effectiveness of wave energy converters (WECs) is being able to monitor their performance remotely through structural health monitoring, as these devices are deployed in very harsh ... -
Numerical simulation of linear water waves and wave-structure interaction
(2012)One of the main stages in the design of wave energy converters (WEC's) is the numerical modelling of a given converter. In this paper, the numerical simulation of both linear deep water waves and linear waves for the finite ...