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 2618 for “"porous"”.
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Jet impingement on porous surfaces
… of planar and axisymmetric jets onto a porous surface. Six different porous surfaces with open area ratios of 23, 26, 31, 37, 44 and 54% (? = 0.23, 0.26, 0.31, 0.37, 0.44 and 0.54) were placed in low speed (usually 40m/s exit velocity) air jets sufficiently far from the jet exit for the …
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Porous Silicon applications in biotechnology
… Nanostructured materials, and among them porous silicon (PS), appear to be good candidates for coupling with biological molecules because of their peculiar characteristics. In the case of porous silicon, the most noticeable are the very large specific area, which allows the loading of …
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Adsorption Hysteresis in Porous Media
The phenomenon of adsorption hysteresis in porous media is studied from a microscopic point of view via computer simulations based on statistical mechanics principles.
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Scattering by porous aerofoil adaptations
… thesis, we consider the effect on scattering of porous adaptations to aerofoils. Since any material adaptation will have a finite extent, it is interesting to understand interference effects between scattered fields arising from the additional material junctions. This can be achieved by solving …
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Sorption in disordered porous media
The lattice-gas model of sorption in disordered porous media is studied for a variety of settings, using existing, updated and newly developed numerical techniques. Firstly, we construct an efficient algorithm to calculate the exact partition function for small lattice-gas systems. The exact …
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Porous metals and metallic foams
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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Plasticity of anisotropic porous metals.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1970.
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Studies in living porous media
… nutrients and ventilation. Unlike many nonliving porous media, they modify themselves to meet these demands; they are active. Using a combination of experiment, theory, and computation, we investigate several living porous media. First we consider termite mounds, meter-sized structures built by …
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Infiltration of deformable porous media
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1992.
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Non-equilibrium thermodynamics in porous media : battery degradation, and sorption and transport in porous materials
Porous media offer many interesting problems in physics and engineering due to the interaction of phase transitions, surface effects and transport. In this thesis I examine two such problems: the degradation of lithium-ion batteries, and sorption and transport of fluids in porous materials. The …
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The Effects Of Diffusion, Capillary Heterogeneity, And Porous Media Morphology On CO2 Migration In Porous Media
… Ionic Liquid (RTIL) membrane. A metallic porous membrane was thoroughly saturated with Emim(Tf2N) and placed in a diffusion chamber. CO2 gas was injected into the upper diffusion chamber and was alloto completely diffuse through the RTIL into the lower diffusion chamber. Lag-time technique …
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Novel processing of porous bioceramic structures
… (HA) have been used to promote bone growth. Porous bioceramic structures have found uses as scaffolds which act as frameworks to support and guide tissue growth in tissue engineering applications. There is constant demand for new processing methods for producing structures of both graded and …
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Charge Transfer Reactions in Porous Materials
Porous materials, such as sol-gels and zeolites, contain nanometer-scale spaces in which molecules are confined, leading to significant changes in their chemical dynamics. In this dissertation, the effects of confinement on chemical behavior are studied. By understanding how the properties of a …
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Shrinkage of concrete using porous aggregates
During its service life, concrete undergoes volume changes which can affect quality and durability of the concrete. There are several types of volume changes, but shrinkage is the type of volume change which is often responsible for cracking of the concrete. Shrinkage can be categorized due to …
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