Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 330 for “"water systems"”.
-
Multiscale modeling of clay-water systems
… are highly affected by clay content and clay-water interactions. However, existing macro-scale continuum models have no length scale to describe the evolution of the clay microstructure and its role in affecting macroscopic properties. This research proposes a bottom-up multiscale modeling …
-
Sustainable Development: Implementation in Urban Water Systems
… thinking, more commonly referred to as systems thinking. Thus, System Dynamics, one branch of systems thinking which operates in a whole-system fashion, is put forward as a powerful methodology to deal with the issue. Using a system dynamics approach, the thesis introduces the idea of …
-
Surface Freezing in Surfactant/Alkane/Water Systems
Surface freezing transitions in mixed monolayers of a homologous series of cationic surfactants, the alkyltrimethyl ammonium bromides (CnTAB where n = 12, 14, 16, 18), as well as a range of non-ionic, zwitterionic and biological surfactants, have been investigated ellipsometrically with a range of …
-
International comparative analysis of urban water systems
… global diversity for a large number of urban water systems, so that trends observed in a small number of cases can contribute to a more general understanding of the spectrum of contemporary sustainability challenges faced by cities around the world. The two-part approach first uses a large …
-
An evaluation of rural public water systems
… communities in nonurban areas where a public water system is needed. In recent years the Farmers Home Administration has provided the stimulus for development of these systems in rural and suburban areas. With greater awareness of the FHA program, two opposing views developed: (1) FHA design …
-
Characterizing Waterborne Lead in Private Water Systems
… fetal death with the consumption of drinking water containing high levels of lead. Although the federal Environmental Protection Agency (USEPA) strives to minimize lead exposure from water utilities through the Lead and Copper Rule (LCR), an estimated 47 million U.S. residents reliant on …
-
Molecular self assembly in flurocarbon surfactant / water systems
… perfluoroalkylcarboxylate surfactants in water. These systems showed phase behaviour uncharacteristic of ionic perfluorocarbon surfactant systems in that they exhibit a clouding phenomenon with increasing temperature. This behaviour was ascribed to the tight association of the large, …
-
The Properties of Clay - Water Systems Under Pressure
Made available in DSpace on 2014-12-09T20:34:17Z (GMT). No. of bitstreams: 1 6511817.pdf: 2382350 bytes, checksum: 46df25210d0e172a457792f255b35468 (MD5) Previous issue date: 1965
-
Biogeochemical Cycling of Manganese in Drinking Water Systems
… and chemical manganese (Mn) cycling in drinking water systems using concepts and tools from civil and environmental engineering, microbiology, chemistry, surface science, geology, and applied physics. Microorganisms were isolated from four geographically diverse drinking water systems using …
-
Reliability of Integrated Municipal Water Systems: Implications of Drought
… risk to the performance of integrated municipal water systems (MWS). They subject MWS to a combined effect of increased demands and decreased supplies. Both water supplies and demands are driven by variability of climate conditions such as rainfall and temperature.
-
Comparison of high pressure water systems for fire protection
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1923.
-
Swelling properties of some montmorillonite clays in water systems
Soil clays relatively high in montmorillonite were examined and compared to the reference material.
-
Cooperative Infrastructures for Small Water Systems: A Case Study
… for a cooperative structure in rural small water systems (SWS) located in Carroll County, Virginia. It is hypothesized that, by organizing as a cooperative, SWS in Virginia can obtain operational efficiency and meet the National Primary Drinking Water Standards (NPDWS) through economies of …
-
iWISE: A Framework for Implementation of Intelligent Water Systems
… have placed significant strains on wastewater and stormwater systems. Consequently, there has been a rise in instances of Combined and Sanitary Sewer Overflows (CSOs and SSOs), among other related problems. These challenges have intensified the impact of sewershed issues on both society …
-
A Rule Based Expert System Framework for Small Water Systems
… an expert system framework that can help small water system operators make informed decisions regarding compliance with various EPA rules that may apply to them. To support both types of questions mentioned earlier, the system incorporates two expert system shells: JESS for answering data-driven …
-
Building a Knowledge Graph for Food, Energy, and Water Systems
… a knowledge graph for the Food, Energy, and Water (FEW) systems given the vast amount of data that is available from federal agencies like the United States Department of Agriculture (USDA), the National Oceanic and Atmospheric Administration (NOAA), the U.S. Geological Survey (USGS), and the …
-
A THERMO-ECONOMIC STUDY OF SOLAR COOLING/HOT WATER SYSTEMS
… performance could be improved by incorporating a water heating loop in the basic cooling system so that the collectors could be utilised for hot water production during such "idle" periods. Commercial applications for such hybrid systems exist in installations such as hotels and hospitals where …
-
Management of disinfection byproduct production in small drinking water systems
… (DBPs) currently regulated in drinking water are trihalomethanes (THMs) and haloacetic acids (HAAs). The objective of this research was to better understand how the water treatment processes employed at four smaller municipal water treatment utilities affects THM and HAA formation by …
-
The Photodecomposition of Polynuclear Aromatic Hydrocarbons in Natural Water Systems
Made available in DSpace on 2014-12-10T22:22:12Z (GMT). No. of bitstreams: 1 7500369.pdf: 4717469 bytes, checksum: 84e976154b5e37f7d47fe09e72006861 (MD5) Previous issue date: 1974
Page 1 of 17