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.
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Showing 1 to 20 of 55 for “"SCMS"”.
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Influence of stormwater control measures on watershed hydrology and biogeochemical cycling
… aesthetic value. Stormwater control measures (SCMs) are a management strategy that can mitigate these impacts urbanization, ultimately preserving those valuable stream ecosystems.</p> <p>While the effects of urban development and individual SCMs on water quantity and quality have been well …
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A review on the efficiency of different supplementary cementitious materials as a partial replacement for Portland cement in concrete
… to as supplementary cementitious materials (SCMs). Apart from the potential benefits of these SCMs for the properties of concrete, they also bring about a reduction in the amount of waste in landfill sites, as these wastes can cause land, water, and air pollution, thereby posing threats to …
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Principal Curves in High Dimensions
… insights to the structure of the data. SCMS is an elegant and robust method for recovering the principal curves of a dataset. However, its dependence on evaluating the Hessian of the density function at every step and the need for an abundance of probes make it prohibitively …
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Impacts of Stormwater Management Practices and Climate Change on Flow Regime and Channel Stability
… of various types of stormwater control measures (SCMs), the relationship between urbanization, widespread SCM implementation, and channel stability in headwater streams remains less explored. Additionally, the impact of climate change (CC) on SCMs, with its growing focus due to improved global and …
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Regulatory and Economic Consequences of Empirical Uncertainty for Urban Stormwater Management
… — known as stormwater control measures (SCMs). The MEP regulatory paradigm acknowledges that there is empirical uncertainty regarding SCM pollutant reduction capacity, but that by monitoring, evaluation, and learning, this uncertainty can be reduced with time. The objective of this …
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Advancements in concrete material sustainability : supplementary cementitious material development and pollutant interaction
… fly ash supplementary cementitious materials (SCMs) used in cement based materials were examined for their chemical and mechanical performance, as well as their pollutant interaction. This dissertation addresses three primary research questions, namely: (i) can zincite additions facilitate the …
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Evaluation of cost effective approaches for nutrient removal in urban stormwater and wastewater: City of Fort Collins case study
… Approximately 1,500 stormwater control measures (SCMs) are implemented in Fort Collins at present; however, not all provide water quality treatment. Two alternative stormwater scenarios were evaluated using the Simple Method and include: 1) retrofitting existing flood control SCMs to provide …
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The influence of supply chain management systems on agricultural businesses in Vhembe District of Limpopo Province
… show that supply chain management systems (SCMS) that are in place in the province of Limpopo, focused more on agricultural business. Against this background, this study seeks to explore the influence of SCMS on agricultural businesses in the Vhembe District of Limpopo. The aim of this study …
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Evaluation of Nutrients and Suspended Solids Removal by Stormwater Control Measures Using High Flow Media
… full-scale HFM Stormwater Control Measures (SCMs) in a residential area were monitored over 11 months to assess the removal of Total Suspended Solids (TSS), Nitrogen, and Phosphorus in First Flush (FF) stormwater runoff. Excellent removal of TSS and particulate-bound nutrients was noted, but, …
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Strictly Concentric Magic Squares
… properties of Strictly Concentric Magic Squares (SCMS). Using the known minimum centre cell value of Prime Strictly Concentric Magic Squares (PSCMS) of order 5, some structural properties are established, enabling the production of an algorithm for construction of minimum PSCMS. The number of …
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Surface Sorption Properties of Halophilic Archaea
… interactions. Surface complexation models (SCMs) for metal-Archaeal adsorption reactions were developed by combining sorption data with the results of acid-base titrations of the Archaeal surface. The resulting SCMs were robust and could be utilized to determine metal mass distribution in …
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AI-powered Data Mining for the Development of Sustainable Concrete Materials
… containing supplementary cementitious materials (SCMs). A domain-informed amortized Gaussian process and a shallow multi-layer perceptron (MLP) are shown to possess superior scientific consistency in predicting time-varied compressive strength, and time-invariant slump and air content properties, …
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Impact of vibration-induced disturbances on superconducting magnets
… interaction between the superconducting magnets (SCMs) and the discrete ground coils causes electromagnetic and mechanical vibrations. These disturbances limit the performance of the maglev, as occurred in the Japanese MLU002 maglev. Here I examine how the electromagnetic oscillations are …
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Properties of Western Cape concrete with metakaolin
… the use of Supplementary Cementitious Materials (SCMs) is found to be an appropriate solution, as it contributes to the reduction of cement used in concrete by partially replacing cement with SCMs. However, a challenge arises as to the availability of SCMs. This is mainly because many SCMs such as …
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Evaluation of stormwater control measures for the removal and fate of legacy and emerging contaminants
… receiving waters. Stormwater control measures (SCMs) are designed to reduce and treat this runoff before discharge, but their effectiveness depends on both the type of contaminant and the phase in which it is present (i.e. dissolved or particle bound). Evaluating SCM performance for legacy …
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Understanding the role of scale in assessing sediment and nutrient loads from Coastal Plain watersheds delivered to the Chesapeake Bay
… a variety of stormwater control measures (SCMs) are implemented. Despite the importance of the Coastal Plain on water quality and quantity, few studies are available that focus on prediction of nutrient and sediment runoff loads from Coastal Plain watersheds. The overall goals of my …
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Chloride binding and desorption mechanism in blended cement containing supplementary cementitious materials exposed to de-icing brine solutions
… containing supplementary cementitious materials (SCMs) like fly ash, slag, and silica fume. Results indicated that the type of cation in the brine solution influenced bound chloride levels, with SCMs improving chloride binding capacity. Slag inclusion was effective in promoting chloride binding, …
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Experimental studies of sorption and transport of moisture in cement based materials with supplementary cementitious materials
… amounts of supplementary cementitious materials (SCMs) to limit CO2 emissions from concrete production. Knowledge about the moisture properties of concrete made from these blended cements is limited. This project has therefore been an attempt to further develop our understanding of the moisture …
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Macro - and Microstructure Evaluation and Field Applications of Concrete with Recycled Glass Pozzolan
… with supplementary cementitious materials (SCMs), consisting mainly of fly-ash (FA) and ground granulated blast furnace slag (GGBS or Slag). The addition of SCMs is necessary to achieve high strength, increased durability, and lower permeability of deleterious substances such as salt …
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Soil-derived dissolved organic matter cycling at terrestrial-aquatic interfaces: Implications for wetland-dominated landscapes, stormwater control measures, and drinking water supply
… a proxy for soil-derived DOM, from the soils of SCMs to explore how SCMs design influences DOM cycling in urban settings. There were low quantities of WSOM, regardless of SCM type. The composition of WSOM was similar to other WSOM studies in natural soil ecosystems. The composition of WSOM was …
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