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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 18 of 18 for “"Barrier systems"”.
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On the Rumpling Instability in Thermal Barrier Systems
"Thermal barrier coatings (TBCs) are protective multi-layered metal-ceramic coatings used in hot sections of jet engines and gas turbines. The TBCs are composed of a superalloy substrate, an intermediate metallic bond coat (BC) and a ceramic topcoat. The TBCs are beset by reliability problems …
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Waste containment barrier systems subject to seismic loading
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Quantifying overwash flux in barrier systems : an example from Martha’s Vineyard, Massachusetts, USA
Coastal barriers are particularly susceptible to the predicted effects of accelerated of sea-level rise and the potential for increased impacts of intense storms. Over centennial scales, barriers are maintained via overtopping during storms, causing deposition of washover fans on their landward …
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Quantifying overwash flux in barrier systems : an example from Martha's Vineyard, Massachusetts, USA
Coastal barriers are particularly susceptible to the predicted effects of accelerated of sea-level rise and the potential for increased impacts of intense storms. Over centennial scales, barriers are maintained via overtopping during storms, causing deposition of washover fans on their landward …
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Enhanced solubility and transport in membrane-copolymer barrier systems for containment of aromatics in contaminated groundwater
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1993.
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Al/ti(x)w(1-X) Metal/diffusion-Barrier Systems: Interfacial Reaction Paths and Kinetics as a Function of Composition and Microstructure
… of WAl$\sb{12}$ formation. In Ti deficient TiW barriers ($<$0.06 at% Ti) sputter deposited in Ar, the WAl$\sb4$ layer is discontinuous and the activation energy for barrier failure is 2.7 eV. In TiW barriers sputtered in Xe (0.33 at% Ti), the diffusion of Ti to the surface creates a counterflux …
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Long and Short-Term Morphologic Evolution and Stratigraphic Architecture of a Transgressive Tidal Inlet, Little Pass Timbalier, Louisiana
The majority of changes to barrier island shorelines can be attributed to tidal inlet processes, and therefore an understanding of these processes is important to effectively manage barrier systems. High rates of relative sea-level rise within the Mississippi River delta plain have resulted in …
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Field Performance of Exposed Geosynthetic Composite Liner Systems
Geosynthetic clay liners (GCL) overlain by a geomembrane (GMB) in a geosynthetic composite liner system in landfill liner and other waste containment applications can be left exposed for weeks, months, or in some extreme cases, even years. Three known consequences of leaving a GMB-GCL composite …
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Alongshore coupling of eco-geomorphological variables in a beach-dune system
ABSTRACT: Coastal dune systems are becoming increasingly vulnerable to erosion and washover due to sea-level rise and changes in storm activity with changing climate. The impact, however, is not consistent within and across coastal barriers and there is a need to examine the alongshore variability …
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Acoustical characterization and parameter optimization of polymeric noise control materials
… thermoplastic materials designed to be used as barrier systems in the automotive and consumer industries have certain acoustical characteristics that vary in function of the stiffness and density of the selected material. The validity and applicability of existing theory is explored, and since …
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Development of engineering tools to analyze and design flexible structures in open ocean environments
… and examining the response of flexible systems in various environmental conditions. Practical applications of the numerical model are presented, focusing on the design, analysis and deployment of a submerged grid mooring 10 km from Portsmouth, NH. The system was recovered after a seven …
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Evaluation of Contaminant Containment at Regina Landfill
… on natural or engineered low permeability barriers placed above or within the vadose zone to prevent contaminant migration into the groundwater system. Numerical estimates of design lives for assessment of barrier system performance are generally acceptable under numerous landfill …
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GEOLOGICAL LEGACY OF A HISTORIC WAVE-DOMINATED TIDAL INLET, CENTRAL NEW JERSEY
… and leave a geological legacy within coastal barrier systems. Background document analysis of the historic Cranbury Inlet (also known as New or Cranbury Inlet, New Jersey, USA), suggests much debate surrounding the years of its opening and a relatively poorly constrained migration history. …
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Factors Influencing Topotecan CNS Penetration in Mouse Models
… be partially attributed to the presence of two barrier systems in the brain, the blood brain barrier (BBB) and blood cerebrospinal fluid (CSF) barrier (BCB). Further investigations have demonstrated multiple ATP-binding cassette (ABC) transporters are present at the two barriers. Camptothecin …
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Analytical Modeling of Bentonite Swelling and Numerical Reactive Transport Modeling in Nuclear Waste Disposal Systems
… the transport of nuclear waste through the barrier and maintain the sealing ability of barrier even with the deformation of bentonite, respectively. Montmorillonite is considered as the primary constituent of bentonite, which is a major expandable mineral. However, many researches have …
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Investigation of Temperature, Solution Strength, and Applied Stress Effects on Cation Exchange Processes in Geosynthetic Clay Liners
… stresses experienced by cover and bottom liner systems, respectively) which are all representative of geoenvironmental conditions observed in MSW landfill barrier systems. Cation exchange in the bentonite component of all conditioned Na-B GCL specimens was quantified by measuring the bound …
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CNS Penetration of Tyrosine Kinase Inhibitors in Mouse Models
… sanctuary of the brain is protected by several barrier systems such as the blood-brain barrier (BBB) and the blood-cerebrospinal fluid barrier (BCSFB). These barriers restrict the passage of anti-cancer drugs into the brain via several protective mechanisms.</p> <p>In the present study, we used …