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Dissertations / Theses on the topic 'Water engineering'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 September 2023

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1

Choi, Siwon (Siwon Chloe). "Microfluidic engineering of water purification." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111415.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>The demand for clean water has been increasing for several reasons, such as rapid industrialization of developing countries, environmental pollution and climate change, and development of biofuels and the resulting irrigation growth. To meet the needs for this growing demand for clean water, desalination has become an appealing solution as saline water (brackish water, seawater and brine) are the most abundant water

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2

Rudolph, Karl-Ulrich, Andreas Kluska, and Van Long Nguyen. "Water Doctoral Network of Engineering and Management." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-88542.

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The lack of highly qualified labour force in the Vietnamese water and environmental sector as well as the problems in the mutual admission of doctoral students between German and Vietnamese Universities have motivated the Institute of Environmental Engineering and Management (IEEM) at the University of Witten/Herdecke to initiate the Water Doctoral Network (WDN). This network shall not be limited to tuition and conferral of doctorates in water sciences, engineering and economics, but serve as nursery for new, innovative research potentials and projects within the international academic co-oper

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3

Zafirakou, Antigoni Koulouris. "Statistical analysis techniques in water resources engineering /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2000.

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Thesis (Ph. D.)--Tufts University, 2000.<br>Adviser: Richard M. Vogel. Submitted to the Dept. of Civil and Environmental Engineering. Includes bibliographical references (leaves 206-214). Access restricted to members of the Tufts University community. Also available via the World Wide Web;

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4

Yeung, Connie Mei Yu. "Nano-engineering of water-gas shift catalysts." Thesis, University of Reading, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414559.

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5

Joorabchi, Amirhassan. "Intelligent Predictive Models for Water resources Engineering." Thesis, Griffith University, 2009. http://hdl.handle.net/10072/367450.

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Fresh water is considered to be one of the most important resources for humans and the environment. Due to the increase in population and the currently unsustainable usage of this limited resource, more attention is needed in the management of water resources. Advanced computational methods can help in attaining a better understanding of all aspects of water. Indeed, a better understanding of water resources requires a vast knowledge of a wide variety of fields such as atmospheric science, geology, hydrology, hydraulics and mathematics etc. To assist in this process computing techniques have b

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6

Ren, Yuheng. "A modelling investigation into the water exchange timescales in estuarine waters." Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/64132/.

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Based on the concepts of water exchange timescales, a three-dimensional model has been refined to predict the age of water (AW). The model has been applied to two estuaries with very different characteristics. One estuary is a partially stratified micro-tidal estuary, i.e., the Pearl River Estuary (PRE), China and the other one is a well-mixed macro-tidal estuary, i.e., the Severn Estuary and Bristol Channel, UK (SEBC). The focus of this study is to investigate the influence of density-induced circulation on the estuarine water exchange process. A comparison between the predictions made using

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7

Santos, Roman Deborah Matilde. "Systematization of water allocation systems: an engineering approach." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4909.

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The allocation of water resources is typically accomplished within the framework of water allocation systems (WAS). In general, a WAS sets priorities, applies rules, and organizes responses to a range of water allocation scenarios. This research presents a comprehensive study of water allocation strategies and provides a conceptual framework of principles and guidelines for designing, assessing, implementing and supporting WAS. The voluminous compilation of international treaties and conventions, interstate compacts, intrastate administrative documentation, and scientific/engineering literatur

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8

Morillo, Sebastian. "Engineering solutions to water quality problems in lakes." University of Western Australia. Centre for Water Research, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0153.

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Lake restoration and management strategies focus on reducing the negative impacts of enriched or polluted inflows. These strategies become of paramount importance when lakes are used for recreational and/or drinking water purposes. Long term control of eutrophication and turbidity problems associated with large inflow loads is usually oriented to catchment management. Although it has been suggested that this is the correct long term approach, public concerns usually require a short term solution. In addition, due to political and economic costs related to changes in catchment management, in-la

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9

Li, Fusheng. "Design of Water Splitting Devices via Molecular Engineering." Doctoral thesis, KTH, Organisk kemi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-181107.

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Converting solar energyto fuels such as hydrogen by the reaction of water splitting is a promising solution for the future sustainable energy systems. The theme of this thesis is to design water splitting devices via molecular engineering; it concerns the studies of both electrochemical-driven and photo-electrochemical driven molecular functional devices for water splitting. The first chapter presents a general introduction about Solar Fuel Conversion. It concerns molecular water splitting catalysts, light harvesting materials and fabrication methods of water splitting devices. The second chap

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10

Xu, Xiaomin. "Engineering of Perovskite Oxides for Electrochemical Water Splitting." Thesis, Curtin University, 2020. http://hdl.handle.net/20.500.11937/82587.

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While electrochemical water splitting offers an alluring prospect of carbon-neutral H₂ production from renewable resources, its efficiency is limited by the slow kinetics of the anodic/cathodic half-reactions. This thesis centres on the engineering of non-precious metal-based perovskite oxides as electrocatalysts to drive the water electrolysis. By fine-tuning the chemical compositions and structures, perovskite oxides with improved catalytic efficiency are developed. A deepened understanding of the structure–activity relationship of the perovskite electrocatalysts is also provided.

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Valsalan, Rincy. "Electronic Water Heater." Thesis, Högskolan i Halmstad, Halmstad Embedded and Intelligent Systems Research (EIS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-37922.

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The main aim of my project is to develop a hardware implementation of the electronic waterheater by choosing different components and minimize the errors in the same. I have consideredseveral options depending on the availability of components, cost, reliability, implementation,financial budget, specification and thinking about the professional technical skills required. Inthis project I designed and implemented, an AVR micro controller based water temperaturemeasurement system using Atmega328p microcontroller.The idea of the project came from a company called Relek production AB, Sweden and t

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12

Aubin, Eric. "Impact of water table management on ground water contamination by two herbicides." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55410.

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Two field investigations were undertaken to study the role of water table management in reducing herbicide pollution of ground water. One of the three-year studies (1992-1995) was conducted in a sandy field near Joliette (Laurin farm), (Quebec) to monitor the herbicide metribuzin where potatoes were grown. Two water table management systems were evaluated, namely subsurface drainage and subirrigation. Soil and ground water samples were taken at two week intervals, once before and six times after the herbicide application.<br>The amount of rainfall received in the first few weeks following herb

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13

Ward, Kate Alice. "Engineering exploration of the water supply system of Constantinople." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/33033.

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Before this research study began, relatively little was understood of the water supply in Constantinople, particularly within the walls of the city. Archaeological work had focused on collecting details of 160 cisterns and a small number of channels and pipes were incidental finds in other excavations. Although no-one had considered the water supply in Constantinople as a whole, the evidence seemed to indicate a sophisticated water management system. With the available data fragmented, and the potential for more evidence limited to serendipitous finds associated with construction work, the onl

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Dalton, James A. "Contribution of upward soil water flux to crop water requirements." Thesis, University of Southampton, 2006. https://eprints.soton.ac.uk/344938/.

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15

Hsieh, Chi-hsu. "Engineering bioretention for treatment of urban storm water runoff." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/239.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2004.<br>Thesis research directed by: Civil Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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Browne, Brigid. "Ecotechnology as interdisciplinary method : ecological engineering of water quality." Thesis, Cranfield University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393623.

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17

Voight, Dana Evans. "Engineering considerations for privatizing water and wastewater utility systems." Tallahassee, Florida : Florida State University, 2009. http://etd.lib.fsu.edu/theses/available/etd-11042009-182807/.

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Thesis (M.S.)--Florida State University, 2009.<br>Advisor: Amy Chan Hilton, Florida State University, FAMU-FSU College of Engineering, Dept. of Civil and Environmental Engineering. Title and description from dissertation home page (viewed on Mar. 8, 2010). Document formatted into pages; contains xi, 147 pages. Includes bibliographical references.

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Magagna, Davide. "Oscillating water column wave pump : a wave energy converter for water delivery." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/349009/.

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The research presented in this dissertation investigates the development and the performances of a new type of Wave Energy Converter (WEC) aimed to provide water delivery and energy storage in the form of potential energy. The Oscillating Water Column Wave Pump (OWCP) concept was proposed and tested through a series of experimental investigations supported by scientific theory. The OWCP was developed after an extensive study of the existing wave energy technology available, from which it emerged that the Oscillating Water Column (OWC) device could be further implemented for water delivery purp

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19

Agharazi-Dormani, Nader. "Modeling of radial water/oil displacement in water-wet porous media." Thesis, University of Ottawa (Canada), 1991. http://hdl.handle.net/10393/5706.

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The effects of five operating variables and four dimensionless groups on oil recovery and finger formation during the immiscible radial displacement of oil by water in a consolidated water-wet porous medium were investigated using statistical model building techniques. Two different approaches were used. In the first approach, experiments were carried out according to a central composite design with partial replication over the following operating region: (UNFORMATTED TABLE OR EQUATION FOLLOWS)$$\vbox{\halign{#\hfil&&\quad#\hfil\cr &Flow rate of injection fluid&0.65 $\le$ Q $\le$ 510.00 (mL/h)

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Grover, David J. (David Joseph). "Modeling water chemistry and electrochemical corrosion potential in boiling water reactors." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/39772.

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21

Frey, Walter C. "Water for life : fighting water pollution in Eastern Europe." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/45738.

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22

Hassan, Ahmad. "The contribution by the water table to crop water use." Thesis, University of Newcastle Upon Tyne, 1990. http://hdl.handle.net/10443/142.

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The contribution by the water table to crop water use was evaluated in the absence of surface water application from lysimetric studies in a glassliouse during 1988, 1989 and 1990. The water table contribution was measured for beans, barley and lettuce in the presence of constant water tables 60, 90 and 120 cm deep. The water table contributed to about 27.0, 16.4 and 11.4% of evapotranspiration of barley with water tables 60, 90 and 120 cm deep, respectively. The contribution in lettuce was found to be 34.7, 13.5 and 6.0% for the 60, 90 and 120 cm water tables, respectively. The water table co

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23

Morrison, Wilke. "Water treatment analysis guide." Master's thesis, Faculty of Engineering and the Built Environment, 2019. http://hdl.handle.net/11427/30896.

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The treatment of water up to potable/drinkable standards is a complex process, with many variables and parameters impacting on each other. In South Africa drinking water delivered to consumers must meet the requirements as recorded in the South African National Standards (SANS). Today, more so than ever, there are a number water sources that can be exploited and treated to provide safe drinking water, namely; surface water (dams and rivers), sea water, ground water and treated wastewater. The focus of this dissertation is on surface water; however, reference is made in the first sections with

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24

Metje, Nicole. "Sediment suspension under water waves." Thesis, University of Birmingham, 2002. http://etheses.bham.ac.uk//id/eprint/5264/.

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Data collected in a large scale laboratory wave flume by a research team using the autonomous bottom boundary layer rig, (STABLE) was the subject of this study. The near bed suspension processes were examined relating them to the hydrodynamics. The deployment of a number of sensors allowed the assessment of their individual performance including the analysis of the pump-sampling and acoustic concentration data. Wavelet analysis was applied to identify the influence of STABLE on the vortex ripples in the vicinity of the rig. It revealed that the modification of the ripple dimensions around STAB

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25

Nagavalli, Venkata Raja Satya Teja. "Smart Discrete Water Quality Sensor." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1449272008.

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26

House, Margaret A. "Water quality indices." Thesis, Middlesex University, 1986. http://eprints.mdx.ac.uk/13379/.

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Given the present constraints on capital expenditure for water quality improvements, it is essential that best management practices be adopted whenever possible. This research provides an evaluation of existing practices in use within the water industry for surface water quality classification and assesses water quality indices as an alternative method for monitoring trends in water quality. To this end, a new family of indices have been developed and evaluated and the management flexibility provided by their application has been examined. It is shown that water-quality indices allow the reduc

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27

Carnell, John. "Calculating the balance between water resources and water demands an approach using risk analysis." Thesis, Aston University, 1999. http://publications.aston.ac.uk/13269/.

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An inability to calculate the balance between supply and demand may mean an inability to meet standards of service or, arguably worse, an excessive provision of water resources and excessive costs to customers. United Kingdom Water Industry Research Limited (UKWIR) Headroom project in 1998 provided a simple methodology for the calculation of planning margins. This methodology, although well received, was not, however, accepted by the Regulators as a tool sufficient to promote resource development. This thesis begins with considering the history of water resource planning in the UK, moving on t

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28

Goh, Jung Hean. "Real time water pipes leak detection using electromagnetic waves for the water industry." Thesis, Liverpool John Moores University, 2011. http://researchonline.ljmu.ac.uk/6013/.

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This project concerns the use of an electromagnetic sensor for the detection of leaks/cracks in water pipes. As old metal pipes corrode they start to become brittle, resulting in the potential for cracks to appear in the pipes. In addition corrosion can build up resulting in a restricted flow of water in the pipe. Using an electromagnetic (EM) wave sensor to monitor the signal reflected from the pipes in real time, provides the necessary information to determine where a leak in the pipe has occurred. Analysis of the reflected signal can provide the operator with information about the condition

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Bourke, Simone. "Measured and simulated water balances for agricultural fields under water table management." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107741.

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In southern Quebec, uncertain rainfall and weather patterns can be detrimental to crop growth even though fresh water is an abundant resource. It is therefore desirable to have a good understanding of the water fluxes that occur in the soil profile of a drained agricultural field. Performing a soil water balance is a way to determine the water uses and losses within the soil profile. A seasonal study conducted in 2010 on a 4.2 ha agricultural field in Saint Emmanuel, Quebec aimed to quantify the water fluxes due to both lateral and vertical seepage in conventional (FD) and controlled drainage/

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Hetherington, David Cameron. "Mathematical modelling and optimisation of a water to water heat pump." Thesis, Aston University, 1988. http://publications.aston.ac.uk/8065/.

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The purpose of the work described here has been to seek methods of narrowing the present gap between currently realised heat pump performance and the theoretical limit. The single most important pre-requisite to this objective is the identification and quantitative assessment of the various non-idealities and degradative phenomena responsible for the present shortfall. The use of availability analysis has been introduced as a diagnostic tool, and applied to a few very simple, highly idealised Rankine cycle optimisation problems. From this work, it has been demonstrated that the scope for impro

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Neupane, Kamal. "Bacterial Inhibition in Waste-Water/Fracking Water Using Copper Ion Solution." Youngstown State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1463931102.

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32

Sulaimani, Abdulaziz. "Residential Water Consumption in Saudi Arabia." Digital Commons at Loyola Marymount University and Loyola Law School, 2015. https://digitalcommons.lmu.edu/etd/437.

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The rate of residential water consumption m Saudi Arabia are unsustainable given the country's limited freshwater supply and steady population growth; currently, water consumption per capita is 91 % above the global average. To address this growing problem, several possible solutions are considered: Better informing the public about the need for conservation, increasing and restructuring the pricing of residential water, and implementing "greywater" recycling systems at the individual household level. Based upon surveyed residents' preferences, the implementation of greywater recycling systems

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33

Abah, Colette P. (Colette Patricia). "A tissue tensioner to limit water injection during high pressure water jet debridement." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98947.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 53-55).<br>Removing necrotic tissue and foreign materials from wounds is a critical step in the management and treatment of chronic wounds. MIT's BioInstrumentation Laboratory developed a novel debridement technology that uses two high-speed impinging water jets to excise necrotic tissue. However, this device potentially causes accidental injection of water into healthy tissue beneath the wound bed, which can cau

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Bomminayuni, Sandeep Kumar. "Modelling tidal flow for assessment of hydro-kinetic energy and bathing water quality in coastal waters." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/70060/.

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In this study, a hydro-environmental numerical model is utilised to further demonstrate the applicability of computer models to predict tidal flow in coastal waters. In particular, high resolution model simulations are performed at two selected sites: the Ogeechee Estuary, USA to assess the hydro-kinetic energy potential near Rose Dhu Island, a small island in the estuary; and at Swansea Bay, UK to assess faecal coliform pollution levels in the bay. Model results from the Ogeechee Estuary simulations revealed that better representation of branching smaller creeks located inshore enhanced the m

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di, Pierro Francesco. "Many-objective evolutionary algorithms and applications to water resources engineering." Thesis, University of Exeter, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493636.

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Over the last ten years, Multi-Objective Evolutionary Algorithms (MOEAs) have undergone tremendous development and have been successfully applied in various fields to solve complex problems that were formulated typically with two or three objectives. However, an increasingly expanding basis of our knowledge of natural processes and engineering requirements, and the need of taking into account sustainability indicators in order to compensate for the socio-environmental damage caused by the human activity, has increasingly led to formulation of the real world optimisation problems requiring a la

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Viehoff, V. A. "Engineering modernity : the provision of water for Tangier 1840-1956." Thesis, University College London (University of London), 2009. http://discovery.ucl.ac.uk/18948/.

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The problem of urban water supply is not a recent phenomenon, but its character has altered dramatically since the nineteenth century. This thesis explores the history of urban water supply in Tangier, Morocco, concentrating on the period from 1840 to 1956. Focusing on specific contested issues and turning points in the history of Tangier’s water supply system, the relationship between urban infrastructure systems, differing conceptions of modernity, economic developments, and the exertion of colonial power are examined. Despite resistance against a marketisation of the system a private conces

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Marques, Guilherme Fernandes. "Economic representation of agricultural activities in water resources systems engineering /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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Sempewo, Jotham Ivan. "Transitioning of urban water distribution systems." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4227/.

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The upgrade of urban water distribution systems (UWDS) amidst uncertain global change pressures is a challenging problem. To deal with this dilemma water utilities require approaches that enable UWDS to be transitioned at a minimal technical and socio-economic impact as uncertainties become known. A review of approaches for upgrading UWDS shows that existing cost models are skewed towards operation and maintenance costs without consideration for future transitionability. This thesis describes approaches for the sustainable transition of UWDS and their application on case studies. The thesis de

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Tukker, Mary Jean. "Water quality information system for integrated water resource management." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/52054.

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Thesis (MEng)--University of Stellenbosch, 2000.<br>ENGLISH ABSTRACT: The processes of monitoring, modelling and managing the water quality of a catchmerit system including all its unique complexities and interrelationships requires an innovative tool or set of tools to help water managers with their decision making. Numerous methods and tools have been developed to analyse and model the real world. However, many of these tools require a fair degree of technical expertise and training to operate correctly and their output may have to be translated or converted to meaningful information

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Tubman, Ian McCrea. "AN ANALYIS OF WATER FOR WATER-SIDE FOULING POTENTIAL INSIDE SMOOTH AND AUGMENTED COPPER ALLOY CONDENSER TUBES IN COOLING TOWER WATER APPLICATIONS." MSSTATE, 2002. http://sun.library.msstate.edu/ETD-db/theses/available/etd-12122002-092733/.

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This thesis investigates the potential for fouling in plain and augmented tubes in cooling tower applications. Three primary factors that affect fouling potential are examined: inside tube geometry, water velocity, and water quality. This paper presents a literature survey for in general precipitation fouling, particulate fouling, cooling water fouling, and fouling in enhanced tubes. This thesis also attempts to determine water qualities that are typical of those found in actual cooling towers. The water quality was determined by taking water samples from cooling towers throughout the country

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Hansen, Allison Jean. "Water quality analysis of the piped water supply in Tamale, Ghana." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90019.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 55-56).<br>The United Nation's Millennium Development Goal Target 7.C is to "halve, by 2015, the proportion of the population without sustainable access to safe drinking water". While the UN claimed to have met this goal, studies have shown that the "improved" sources used as a metric to track progress do not always supply safe water. One example of these improved sources is the piped water in Tam

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Close, Timothy Mark. "Diesel injection of coal-water slurry." Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/79447.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, and (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1986.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.<br>Bibliography: leaves 66-67.<br>by Timothy Mark Close.<br>M.S.

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Rodriguez-Gotopo, Rossanny. "A Solution Proposal for the Bottled Water Problem Through Systems Engineering." Digital Commons at Loyola Marymount University and Loyola Law School, 2012. https://digitalcommons.lmu.edu/etd/422.

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The bottled water industry has rapidly grown in the past ten years, and more people around the globe are choosing bottled water as their preferred beverage. Much has been written about bottled water in recent years, this paper will provide literature that will tackle individual elements of the phenomenon, particularly information on market growth, the differences between tap water and bottled water, and the industry's harmful effects on the environment. This project will attempt to provide a creative solution to minimize the consumption of the bottled water in the South Bay area of Los Angeles

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Vågerö, Oskar. "Automating Residential Water Filters." Thesis, KTH, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-245228.

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It is not uncommon to install private water filters in Malaysia, to rid the water of heavy metal contaminants, chlorine and bacteria. The main objective of this study was to redesign the base structure of a commercially available water filter (by Blöndal Water Group) in order to allow for an automated backwashing and rinsing function of the filter. Additional focus was laid on creating an energy efficient mechanism for compatibility with different power sources, including solar energy. The study consists of two parts, firstly a literature study of selected relevant areas necessary to understan

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Xie, Xiongfei. "Operation Optimization and Water Quality Simulation of Potable Water Distribution System." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5406.

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A potable water distribution system (WDS) consists of pipes, pumps, valves, storage tanks, control and supporting components. Traditionally, it has two basic functions. First, provides end users with potable water at sufficient pressures and good water quality. Second, provides sufficient pressure and flow for fire fighting. Currently, potable water is still the least expensive material for fire fighting. To accomplish these two goals, water utilities have to consider the integrity and security of the water network. As a result, this research selected three research topics that are closely rel

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Iacomini, Christine Schroeder. "Combined carbon dioxide/water solid oxide electrolysis." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/290073.

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Solid oxide electrolysis of a mixture of water and carbon dioxide has many applications in space exploration. It can be implemented in propellant production systems that use Martian resources or in closed-loop life support systems to cleanse the atmosphere of facilities in extraterrestrial bases and of cabin spacecrafts. This work endeavors to quantify the performance of combined water and carbon dioxide electrolysis, referred to as "combined electrolysis", and to understand how it works so that the technology can be best applied. First, to thoroughly motivate the research, system modeling is

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Xie, Mingyu. "Model predictive control of water quality in drinking water distribution systems considering disinfection by-products." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7207/.

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The shortage in water resources have been observed all over the world. However, the safety of drinking water has been given much attention by scientists because the disinfection will react with organic matters in drinking water to generate disinfection by-products (DBPs) which are considered as the cancerigenic matters. Although much research has been carried out on the water quality control problem in DWDS, the water quality model considered is linear with only chlorine dynamics. Compared to the linear water quality model, the nonlinear water quality model considers the interaction between ch

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48

Singh, Ajay. "Water and nitrogen use efficiency of corn (Zea mays L.) under water table management." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=116989.

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Drainage and water table management are essential for crop production in humid regions. Water table management not only increases crop yield, but also reduces nitrate leaching to water bodies. This study investigated the water and nitrogen use efficiency of corn under two water management conditions and three nitrogen fertilizer levels. The sap flow heat balance method was used to measure the daily water uptake of corn, over an extended period of the growing season. The impacts of climate change on grain corn and biomass yield in eastern Canada under tile drained conditions was also evaluated

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49

Hendrickson, Kelli L. "Navier-Stokes simulations of steep breaking water waves with a coupled air-water interface." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33559.

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Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2005.<br>Includes bibliographical references (p. 367-378).<br>Wave breaking on the ocean surface significantly facilitates the transfer of mass, momentum, heat and energy across the air-sea interface. In the context of the near field flow about a surface ship, the breaking bow wave is a key element to the bubbly signature and an appreciable portion of the wave drag of the ship. Yet, despite its direct effect on many aspects of ocean engineering, this phenomenon is not well understood even at a basic level. Most

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50

Humplik, Thomas. "Investigating the adsorption and transport of water in MFI zeolite pores for water desalination." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62533.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 71-74).<br>The permeability of reverse osmosis membranes is limited by the diffusive transport of water across a non-porous polyamide active layer. Alternatively, fabricating a microporous active layer capable of rejecting salt ions while allowing for water transport would increase the permeability while maintaining high salt rejection. Zeolites provide a model porous network which is capable of performing this type of

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