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 41 for “"small sizes"”.
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Facilitated diffusion in rabbit erythrocytes
… because they are relatively non-toxic and their small sizes allow penetration of the erythrocyte membrane within a reasonable length of time.</p>
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Mathematical simulation of gas and water coning in petroleum reservoirs by the dynamic material balance technique
… Because of the convergent flow patterns and small sizes of the inner grid blocks, the radial coordinate models used to study the problem have a tendency to become unstable. Since several hundred pore volumes may flow through the inner grid blocks during a rather small time interval, …
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TROPHIC ECOLOGY OF JUVENILE LEAN AND SISCOWET LAKE TROUT (SALVELINUS NAMAYCHUSH) FROM U.S. WATERS OF LAKE SUPERIOR
… by δ 15N) was similar for both ecotypes at small sizes (mm), but Siscowet exhibited a higher trophic position than Lean Lake Trout at larger sizes (>400mm) and older ages (>5 years). Base of production (as measured by δ 13C) was similar for small Lean and Siscowet. Isotopes of sulfur (δ 34S) …
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Large-Scale Constraint-Based Pattern Mining
… graph, and focused on mining patterns of large sizes. Colossal patterns in each data formats are studied to discover pruning properties that are useful for direct mining of these patterns. For item-set data, we observed robustness of colossal patterns. By defining the concept of core patterns, …
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Variation in Thamnocortus insignis - genetically and environmentally plastic?
… and this was due to the relatively very small sizes of the seedlings when the measurements were taken. Genetic variation was investigated by using isozyme electrophoresis of the EST locus. One population (Puntjie) showed significant deviation from the Hardy-Weinberg equilibrium, whilst …
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Large-Signal Characterization of Piezoelectric Resonators for Power Conversion
… to their size, weight, and poor performance at small sizes. Piezoelectric devices, when operated in their inductive regime, can serve a purpose similar to that of magnetic components and offer favorable scaling properties as components are miniaturized. Several sources have demonstrated the …
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Physio-morphological effects of abrupt thermal stress on diatoms
… power plants, not economically feasible in small sizes, are being constructed to generate even more electrical energy per unit than the new conventional units. Nuclear power facilities produce heat less efficiently and, thus, require approximately fifty percent more cooling per BTU than …
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Transgenic Tools in Ants and the Representation of Alarm Pheromones in the Ant Antennial Lobe
… chemical communication, together with their small sizes and relatively simple brains, make ants intriguing model systems for many topics in neurobiology. While many ant species possess brains no larger than the wellcharacterized vinegar fly, the primary olfactory processing centers (antennal …
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The effect of chaotropic magnesium chloride on the growth of microbes
… further testing is needed to confirm this as the small sizes of suspected flocks render visual confirmation difficult. Identification and improved knowledge on chaophiles and chaotolerant microbes would have implications for astrobiology and in the search for extra-terrestrial life or the …
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Polymer- and Bioadditives-Assisted Synthesis and Surface Modification of Anisotropic Gold Nanocrystals
… the reproducible and scalable syntheses of small anisotropic nanocrystals in high yield utilizing a polymer and small thiolated compounds as shape-directing agents during growth, which enhance the long-term shape stability and colloidal stability after functionalization. Chapter 1 is a …
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Hydrothermal Processing of Barium Strontium Titanate Composites on Printed Circuit Board for Thin Film Varactor Applications
… powder. Low-temperature derived powders are the smallest in size, in the nanometer range. Due to such small sizes, the ferroelectric properties are lost, leading to no tunability and very low dielectric constant. The permittivity ranges from 30 to 55. Sol-gel derived powders are very reactive to …
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Power Electronics Meet Piezoelectrics: Converters, Components, and Miniaturization
… pose inherent size and performance challenges at small scales. This thesis explores how we can leverage an alternative passive component technology – piezoelectric components – to eliminate magnetics and unlock a new era of miniaturization for power electronics. Piezoelectrics offer several …
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Active Thermal Augmentation and Ultra Dense MEMS-Based Electrospray Thrusters
… their unique scalability down to extremely small sizes, their use of nontoxic propellants that do not require special storage or pressurization, and their ability to be operated in a bipolar mode, eliminating the need for bulky and complex neutralizers. Electrosprays still lag behind other …
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Chest X-Ray Image Classification with Deep Learning
… most diseases existing in CXRs usually happen in small, localized areas, we propose to localize the local discriminative regions and integrate the global and local cues into an attention guided convolution neural network (AG-CNN) to identify thorax diseases. AG-CNN consists of three branches …
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Dielectric micro-cavity surface-emitting lasers
… realized because it is believed that their small sizes can actually bring large potential in the next-generation dense photonic integration and optical interconnects. However, the absorption loss in the metal fundamentally impedes the practical use of metal-cavity nano-lasers, as most of the …
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Hydrogen powered hybrid wing body freighter systems analysis and conceptual design using the ACS tool
… as many airports as possible. The mid-sized and small sizes had reduced Balanced Field Lengths allowing many airports to be serviced. Ultimately the Hydrogen powered option is cleaner and lighter, allowing for environmentally friendly transport of cargo.
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Assessing Black-capped Vireo (Vireo atricapillus) Breeding Habitat based on Size, Spatial Distribution, and Plant Species in Shrub Mottes at Kerr Wildlife Management Area, Texas
… semiopen containing frequent mottes of various small sizes closely spaced with several plant species. Unsuitable BCV habitat was characterized as less heterogeneous and dense containing few, large mottes spaced far apart with few species.
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Determination of the Structural and Functional Mechanisms of Perfluorocarbon-based Nanoemulsion Particle Interactions with Model Biomembrane Systems
… based nanoemulsion particles: PFC-NEPs) are very small sized: ~ 250 nm in diameter) greasy droplets that are enclosed by emulsifying phospholipid monolayer. PFC-NEPs have been extensively developed for target-specific delivery of therapeutic agents such as imaging agents and drug molecules. …
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Investigations into Building Block Structure and Method of Preparation on the Properties of Nanomaterials
… from a novel hyperbranched fluoropolymer with small sizes able to pass the blood brain barrier were synthesized: Chapter 3). After conjugation with F3 peptide which targets to nucleolin in most tumor cells, and loaded with doxorubicin as the drug to kill the tumor cells, both in vitro and in …
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Development Challenges for Chinese Private Manufacturing Firms in Globalisation
… Chinese leading private firms of both large and small sizes individually, and discussing how the interaction of foreign and indigenous firms in both domestic and international markets shapes the global competitiveness of Chinese private firms. The dissertation mainly conducts qualitative inquiry …
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