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 18 of 18 for “"layer systems"”.
-
Electromechanics of fluid double-layer systems.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1971. Ph.D.
-
Layer-by-Layer Systems for Craniomaxillofacial Bone Repair
… that can potentially meet this challenge is layer-by-layer (LBL) self-assembly, which can be used to coat defect-relevant implants with nanoscale thickness films that elute growth factors with tunable release kinetics and dose. In this work, we first developed LBL film architectures deliver …
-
Preparation and investigation of polymer-foam films and polymer-layer systems for ferroelectrets
… Ferroelectrets are functional polymer systems for electromechanical transduction, with elastically heterogeneous cellular structures and internal quasi-permanent dipole moments. The piezoelectricity of ferroelectrets stems from linear changes of the dipole moments in response to …
-
Estimation of cavity pressures in air-permeable, multi-layer systems using a lumped-leakage approach
… tests. But in the case of air-permeable multi-layer systems, which have gaps or porosity in the external layer along with a cavity between the external and inner layers, the estimation of wind loading across the external layer or in the inner cavity by wind tunnel tests can be quite difficult …
-
Evaluating least absolute deviation regression as an inverse model in groundwater flow calibration
… MODFLOW groundwater model works well with single layer geologic systems; however, it does not work well with multi-layer systems. This dissertation provides the Least sum Absolute Deviation regression and Expectation Maximization procedures. These new FORTRAN procedures were added to the parameter …
-
Modeling of Foam Flow in Porous Media for Subsurface Environmental Remediation
… of surfactant/foam displacement in multi-layer systems. Part 1 investigates six scenarios such as different levels of foam strength (i.e., gas mobility reduction factors), different initial conditions (i.e., initially oil/water or oil/water/gas present), foam stability affected by water …
-
Experiments with withdrawal-induced resonant internal waves
… Theory appropriate to internal waves in two layer systems has been presented with an extension to deal with the effect of viscosity. The study shows that modulated pumping is a viable method of generating internal waves experimentally and may have applications in controlled reservoirs on …
-
Präparation von Ni-C-Multischichten und Mischsystemen mit dem PLD-Zweistrahlverfahren und Untersuchung der thermischen Stabilität der Schichtsysteme
… method for the preparation of thin films and nm layer systems. In this work a cross beam PLD system is used as a special development for reduction of macro particle contamination in the growing layer. Two plasma plumes which overlap under a defined angle are produced on separated targets by two …
-
DGCNN : learning point cloud representations by dynamic graph CNN
… acts on graphs dynamically computed in each layer of the network. It is differentiable and can be plugged into existing architectures. Compared to existing modules operating in extrinsic space or treating each point independently, EdgeConv has several appealing properties: It incorporates …
-
Wind-Induced Pressures in Air Permeable, Double-Layer Roof Systems in Regions of Separated Flow
… distribution acting on air permeable, double-layer roof systems placed on low-rise buildings. Because of the pressure transmission into the cavity between layers, the pressure difference in the double-layer systems differs significantly from that in a single layer. The interior pressures (in …
-
Analysis of soil penetrometer using Eulerian finite element method
… Strain Path Method. Further calculations for two-layer systems illustrate the potential of the Eulerian formulation to handle realistic layered soil profiles. A more limited study confirms the complexity of drained penetration in sands, where the predicted tip resistance is affected by soil …
-
Near-Field Pressure Distributions to Enhance Sound Transmission into Multi-Layer Materials
… transmission, the wave propagation through multi-layer materials must be considered to give an full accounting of power transmission into structures. A model for wave propagation in multi-layer systems of solids and fluids was developed using wave potentials in each layer, allowing for coupling …
-
Centrifugal instability of the wake dominated curved compressible mixing layers
… aligned with the centreline of a curved mixing layer system. The Görtler modes were previously found to exist within the curved compressible mixing layers by Owen et al. (1997). This study extends the work of Owen et al. (1997) and attempts to demonstrate the effect a wake has on the growth rate …
-
Numerical Simulation And Control Of Thermocapillary Convection In Cavities And Liquid Layers
… convection in cavities and liquid layers in the absence of gravity is studied. The flow is driven by a temperature gradient parallel to the interface.;An effective algorithm for analysis of the above problem has been developed. The algorithm is based on a coordinate transformation …
-
Toward a drug delivery coating for intraocular lenses
Layer-by-layer assembly has become a quintessential tool for the creation of versatile, dynamic nanostructured materials able to dictate cellular behavior through exquisite surface functionality and delivery of bioactive agents. The primary aim of this work was to use layer-by-layer assembly to …
-
Valence losses at interfaces in aluminium alloys
… of this project was to investigate EELS from two-layer systems and relate the results to the existing theory. Two systems were investigated, magnesium silicide platelets within an aluminium matrix and silicon precipitates within an aluminium matrix. Both systems were prepared through thermal …
-
Einfluß der magnetischen Dipolkopplung auf den Tunnelmagnetowiderstand in Schichtsystemen und strukturierten Elementen
… increase of the dipole coupling between magnetic layers with decreasing barrier thickness as predicted by the model. Deviations from the theoretical predictions are observed for the case of thinner soft magnetic layers, which can be explained by reduced magnetisation in very thin films. We …
-
Optical transport of pseudo-random coatings
… range of properties that can be achieved by such systems. Unfortunately, the theoretical techniques to model the complex and often pseudo-random nature of structured coatings are not yet fully adequate. In this thesis I will address this problem. Specifically, I will develop improved techniques …