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 20 of 988 for “"Morphologies"”.
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Uncovering Constraints On Organoid Morphologies
… of its original organ, suggesting that organoid morphologies are governed by a set of tissue-specific constraints. Here, we establish a framework to identify constraints on an organoid’s morphological features by quantifying them from microscopy images of organoids exposed to a range of …
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Fracture Morphologies in Particulate Suspensions
Films of a colloidal suspension solidify and crack during drying and discontinuously shearthickening suspensions shear-jam and fracture under applied stress. In both systems, the morphology and dynamics of fracture reveal the internal stresses in the material: craquelures in old paintings reveal …
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Sustainable energy performances of urban morphologies
… in an urban design context, depends on urban morphologies ability to save and conserve energy, be efficient and produce energy from renewable sources without decrease the level of energy services. In other words we can think of a more sustainable energy urban built environment as one that …
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Otolith morphologies in the genus sinocyclocheilus
Sinocyclocheilus is a genus of Cyprinid fish found in southern China. This genus contains 68 species of which 40 species have adaptations for life in cave habitats. A common adaptation seen in fish that live in caves with no light is the loss of vision. Such cavefish must therefore rely on other …
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Contingent [re]occupations : residual urban morphologies
This thesis aims at establishing a dialogs between urban algorithms and individual space in Boston's Back Bay. Using the vehicle of typology as a basis, unit alteration and reprogramming are explored as urban systems. The design implications of introducing these altered forms of domestic morphology …
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Morphologies of PDMS-containing diblock polymers
The morphologies of polydimethylsiloxane (PDMS)-containing diblock polymers are investigated as a function of volume fraction, segregation, processing procedure, and temperature. Strongly segregated polyisoprene-PDMS and polystyrene-PDMS diblocks are prepared according to standard procedures in the …
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Network morphologies in monodisperse and polydisperse multiblock terpolymers.
Multiply continuous network morphologies were previously identified in “monodisperse” (polydispersity index (PDI) < ~1.1 in all blocks) poly(isoprene-bstyrene- b-ethylene oxide) (ISO) triblock terpolymers. This work extends the investigation of multiply continuous network structures to two other …
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Digital reconstructions of fossil morphologies, Nama Group, Nambia
Previously undescribed fossils of weakly calcified metazoans were recently discovered in the terminal Proterozoic Nama Group of central and southern Namibia (Grotzinger et al., 1995), in sediments that contain the terminal Proterozoic index fossil Cloudina. The new fossils are closely associated …
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Synthesis, morphologies and applications of polyoxometalate-containing diblock copolymers
… and film optical properties, self-assembled morphologies and solar cell performances of these hybrids have been studied. It has been found that solar cell devices based on hybrid P3HT exhibited rather poor performances. Fluorescence dynamic studies indicate that the photoinduced electron …
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Generative morphologies of architectural organization in matter force field
This thesis investigates generative methods of architectural form finding in matter force fields that produce spatial subdivision and organizational variation. Unlike the style driven contemporary free-form architecture or decorative computational form making processes, this thesis is interested in …
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Anisotropic Morphologies and Properties in Perfluorosulfonate Ionomer-Based Materials
The overall goal of this investigation was to elucidate specific structure-property relationships in perfluorosulfonate ionomers (PFSIs)-related materials. The project can be broken into two primary foci. First, we explored the current state of understanding related to morphology-property …
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Block copolymer self-assembly - a computational approach towards novel morphologies
… is quite limited. Expanding the range of BCPs morphologies could be attained through the implementation of a host of strategies that could be used concurrently. Using directed self-assembly (DSA), a sphere forming BCP was assembled in a randomly displaced post template to study system …
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Material dialogues : exploring design methodologies in material tectonics through stone morphologies
Stemming from the cultural and technological developments that took place over the last 20 years, the architectural design process has undergone a significant epistemic shift. At the heart of this change lies a rekindled interest in materiality and craft-based experimentation as drivers for teasing …
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Jaw mechanics and muscle behavior in adolescents with different craniofacial morphologies
Jaw mechanics and muscle behavior were evaluated in ten dolichofacial versus ten brachyfacial adolescents. Subjects consented to participate. Numerical modeling predicted TMJ loads for molar biting angles based on minimization of muscle effort and subjects' anatomical geometries (from cephalograms …
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THE CRAYFISH VISUAL SYSTEM: INTRACELLULAR STUDIES AND MORPHOLOGIES OF IDENTIFIED INTERNEURONS
A semi-intact eye-cup preparation was developed which maintains visual responses and enables intracellular recordings to be made from the optic lobes of the crayfish compound eye. Sustaining fibers (SFs) were impaled with lucifer yellow electrodes near their entrance to the second optic ganglion or …
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Equilibrium and transient morphologies of river networks : discriminating among fluvial erosion
… models) produce similar equilibrium morphologies, although some details lead to differences in sensitivity.
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Characterization of new surface morphologies in a hydrogen-bonded multilayer system
… morphology of the film. Different surface morphologies appeared in four different pH regimes. Highly acidic solutions retained the film's original smooth surface, but wrinkled, honeycomb, or globular morphologies appeared as the pH increased. The three different surface morphologies …
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IMPLEMENTATION OF NOVEL RECEPTOR-TRANSDUCTION CONCEPTS AND MATERIAL MORPHOLOGIES IN GAS SENSORICS
Low dimensional nanostructures have defined the frontier of the research in material science for the last two decades. Presented here are the results of experimental research on growth, device fabrication and application of quasi-one dimensional phthalocyanines and metal oxides to gas-sensing. The …
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A system-theoretic approach to global and local regulation in neuron morphologies
… behavior in both abstract and reconstructed morphologies. This study reveals important tradeoffs between robustness, convergence rate, and accuracy of scaling. We first look at synaptic scaling as a “global control action” whose main role is to guarantee a steady level of neural activity. We …
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Improving Seaglider Efficiency: An Analysis of Wing Shapes, Hull Morphologies, and Propulsion Methods
<p>Autonomous underwater gliders are a family of autonomous underwater vehicles used for long-term observation of oceanic environments. These gliders leverage changes in buoyancy and the resulting vertical motion, to generate forward locomotion via hydrodynamic surfaces. In order to function for …
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