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 156 for “"Plumbing"”.
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Two Issues in Premise Plumbing: Contamination Intrusion at Service Line and Choosing Alternative Plumbing Material
… enter into the drinking water as the home plumbing system is a passive recipient from the water main. While the major (municipal) system is readily recognized as a vast infrastructure system of nearly 1,409,800 km of piping within the United States, the minor (plumbing) system that is at …
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A locational analysis of plumbing cooperatives
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1994.
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Investigation of reverse plumbing in rotary seals
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2003.
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Our plumbing, ourselves : a public bath house
… This thesis will consider: --how developments in plumbing and sewage and their related fixtures, kitchens and baths, parallel cultural changes throughout history. Though these relationships are not necessarily causal, they may indicate what (critical) roles rituals in contemporary baths can take …
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Methylobacterium spp.: Emerging Opportunistic Premise Plumbing Pathogens
Opportunistic premise plumbing pathogens (OPPPs) are responsible for many infections linked to drinking water. The annual cost of disease caused by these waterborne pathogens is $850 million. Key characteristics of these opportunistic waterborne pathogens include: disinfectant- resistant, biofilm …
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Simulation to assess plumbing and fire protection innovations
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.
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Decision Support Tool for Optimal Replacement of Plumbing Systems
Pinhole corrosion leak in home plumbing has emerged as a significant issue. In the major water distribution system managed by municipalities and water utilities the costs are distributed among all subscribers. The home plumbing repair/replacement cost and possible water damage cost must be …
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Professionalization and market closure : the case of plumbing in India
… occupational closure. Using the case of plumbing in India, I demonstrate how the Indian Plumbing Association (IPA), a newly formed organization of internationally-trained plumbing contractors and consultants, is using the rhetoric and structures of professionalization to threaten …
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Critical factors controlling regrowth of opportunistic pathogens in premise plumbing
… human-made water systems, particularly premise plumbing, are now the primary source of water-borne disease in developed countries. The prevention and control of opportunistic pathogens is a new challenge in premise plumbing due to the limited knowledge concerning the factors driving their …
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An Evaluation and Pressure-Driven Design of Potable Water Plumbing Systems
… water distribution systems, also referred to as plumbing water distribution systems, run from the upstream node of the water service line to all interior plumbing fixtures and demand nodes associated with the building. Most texts and research papers focus on major systems, while only a small …
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Impact of Polymeric Plumbing Materials on Drinking Water Quality and Aesthetics
… use of polymer pipes is now very common in home plumbing and other parts of the drinking water distribution system. Many taste and odor complaints in drinking water are known to originate from contact of water with materials. The ability of polymer pipes used in home plumbing to affect drinking …
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Water Hammer: An Analysis of Plumbing Systems, Intrusion, and Pump Operation
… look at water hammer with an emphasis on home plumbing systems. The mathematics of water hammer are explained, including the momentum and continuity equations for conduits, system construction, and the four-point implicit finite difference scheme to numerically solve the problem. This paper …
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Noise performance of erbium-doped fiber amplifiers with forward and reverse plumbing
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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Microbial Ecology of Acanthamoeba polyphaga and Sulfate-Reducing Bacteria in Premise Plumbing
Great advances have been made in the last 100 years in the effort to provide safe and reliable potable water. Unfortunately, organisms surviving the water treatment process still cause illnesses in the population. Acanthamoebae are ubiquitous in the environment and are resistant to commonly used …
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Relationship Between Organic Carbon and Opportunistic Pathogens in Simulated Premise Plumbing Systems
… bacteria and pathogens within premise plumbing. This thesis is the first systematic examination of opportunistic pathogen persistence and amplification in simulated glass water heaters (SGWH) as a function of influent organic matter concentration. The role of plumbing conditions that …
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Practical Impacts of Galvanic Corrosion in Water Service Lines and Premise Plumbing
… dielectrics in water service lines and premise plumbing.
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Plumbing the Depths of the Shallow End: Exploring Persistent Homology Using Small Data
<p>Persistent homology is a prominent tool in topological data analysis. This thesis is designed to be an introduction and guide to a beginner in persistent homology. This comprehensive overview discusses the math used behind it, the code needed to apply it, and its current place in the field. We …
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Microanalytical Constraints on the Geometry and Chemical Evolution of Kīlauea’s Volcanic Plumbing System
… paradigm shift in our understanding of volcanic plumbing systems, moving away from a model where large vats of melt are stored in the crust, to a model dominated by extensive piles of settled crystals. This thesis examines the petrological evidence for this ‘mush-dominated’ model at Kīlauea …
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Growth of Opportunistic Pathogens in Domestic Plumbing: Building Standards, System Operation, and Design
… of OP survival and proliferation in domestic plumbing systems. In a cross-sectional survey of water- and energy-efficient buildings, domestic water age ranged from 8 days to 6 months and resulted in pH and temperature fluctuations, rapid disinfectant residual decay up to 144 times faster than …
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Nitrification in premise plumbing and its effect on corrosion and water quality degradation
… least some circumstances. Moreover, that certain plumbing materials would inhibit nitrification, but that in other situations the plumbing materials would enhance nitrification. Experiments verified that nitrification could affect the relative efficacy of chlorine versus chloramine in controlling …
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