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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 20 of 82 for “"mesh size"”.
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A Study of Techniques to Solve the Disparate Mesh Size Problem With an Application to Sinuous Antennas
The disparate mesh size problem has only recently been recognized as a major impediment to solving large-scale electromagnetic radiation and scattering problems. This problem first came to the author's attention when trying to apply the fast multipole method (FMM) to a particular wideband antenna, …
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Roles of mesh size, segmental dynamic, glass transition temperature and molecular structure on penetrant diffusion in dense vitrimers
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-05-01
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Evaluating alternative macroinvertebrate sampling methodologies in wetlands: Influence of sieve mesh size on relationships between environmental and assemblage variables
… is large enough to be retained on a 500-à µm mesh sieve. Although macroinvertebrates (hereafter invertebrates) are important in food webs and sensitive to environmental conditions, they are often omitted from wetland condition monitoring programs because use of this fine-mesh sieve makes …
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Size reduction characteristics of an experimental swing hammermill
Size-reduction of materials is an important operation in many chemical industries. The purpose of size-reduction are: (a) for specific mesh size product; (b) grinding for release, or unlocking grinding for purposes of surface exposure or locked-in products for chemical or physical attack; (c) …
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Response to parameter variation of a one-inch diameter hydrocyclone for pyritic sulfur removal
… duplicated the coal with respect to particle size, shape, and specific gravity distribution. The synthetic coal had the advantage of not degrading during the course of the experiment. Three coals were simulated for the purposes of this experiment. Pocahontas 113 coal served as the "light" …
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Anisotropic output-based adaptation with tetrahedral cut cells for compressible flows
Anisotropic, adaptive meshing for flows around complex, three-dimensional bodies remains a barrier to increased automation in computational fluid dynamics. Two specific advances are introduced in this thesis. First, a finite-volume discretization for tetrahedral cut-cells is developed that makes …
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Adaptive fabrication of biofunctional decellularized extracellular matrix niche towards complex engineered tissues
… high-loading of key ECM proteins, single-layered mesh membrane with controllable mesh size, and flexibility for supporting a range of cell culture configurations. Decellularized extracellular matrix (dECM) powder was used to fabricate this protein scaffold, as a close replicate of the chemical …
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Distribuição espaço-temporal da classe Copepoda na Baía de Guanabara, RJ, Brasil
… 8 sites, using a conic-cylindrical net of 200μm mesh size. Vertical tows at Guanabara Bay entrance site were done to complement the species list. Twenty-five species of copepods were identified, and the most abundant and frequent ones were Acartia tonsa, Acartia lilljebörgi and Paracalanus …
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Phase field modeling of dynamic brittle fracture at finite strains
… confirm that the choice of length-scale and mesh size influences the solutions. In this regard, a small value of the length-scale converges to the sharp crack topology and yields a larger stress value. On the other hand, a large length-scale parameter combined with a too coarse mesh size can …
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Pore-scale Study of Flow and Transport in Energy Georeservoirs
… effects of mixed proppants of different sizes and types on the fracture conductivity were also investigated. The simulation results demonstrate that a proppant pack with a smaller diameter coefficient of variation (COV), defined as the ratio of standard deviation of diameter to mean …
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Heparanoid hydrogels for cardiovascular tissue regeneration
… Gelation times, viscoelasticity, swelling, mesh size, Hep/HS elution and activity, as well as GF incorporation and release were studied in vitro. Type 2D gels with covalently incorporated (CI) Hep and GFs were evaluated in vivo as ingrowth matrices in porous polyurethane (PU) scaffolds for …
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Bioenergetics of Rainbow Trout in Lake Oahe, South Dakota
… amount of effort during July. The 25- and 38-mm mesh sizes caught more fish than any other mesh size in all three net locations. The 38-mm mesh effectively sampled rainbow trout ranging from 300 to 455 mm. This study demonstrated that mean CPUE is influenced by net placement and mesh size of …
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A Study of On-line Analysis of Hydrogen Chloride Evolution During Coal Combustion
… as a function of the chlorine content and mesh size of the coal. It was determined that combined TG-FTIR and TG-MS systems offer the user an efficient means to investigate the mechanism of hydrogen chloride evolution from coal combustion. From the HC1 evolution profiles, it was determined …
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Dynamics of nanoparticles in complex fluids.
… of the chain but comparable to the average mesh size of the fluctuating polymer network. The diffusion coefficient (D) of the particles decreased monotonically with polymer concentration and it can be fitted with a stretched exponential function. At high concentration of the polymer, a clear …
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A Numerical Evaluation of Hypersonic Inward-Turning Inlets at Off-Design Conditions
… adaptation approach with relatively modest final mesh size. Axisymmetric inward-turning inlets are shown to be relatively insensitive to performance losses at Mach numbers near design conditions until sudden unstart is reached. Equilibrium vibrational thermodynamic effects are not found to have a …
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Effect of cross-linking on the diffusion of water, ions and small molecules in hydrogels
… been commonly used to tune key parameters like mesh size and molecular weight between cross-linkers, in order to change macroscopic properties of hydrogels. In this thesis, molecular dynamics investigations of chemically-cross-linked poly(ethylene glycol) (PEG) hydrogels are reported with the …
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A computer simulation of the population dynamics of the Cape hakes (Merluccius capensis and M. paradoxus)
… indicated a substantial decrease in the stock size over the period 1955-74; consequently, a catch projection model was designed to investigate the hake population. Where appropriate, available data have been included in the model; however, some further research was required: 1. The monthly …
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Mechanical properties of F-actin network
… also characterized in terms of filament length, mesh size, and degree of bundling.
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Some of the factors affecting the operation of a screw conveyor type mixer
… investigations also showed the maximum particle size usable in the mixer without obtaining excessive size reduction during mixing. In addition to the above, the investigations showed that in tests where a difference in the density of these materials existed as well as a difference in their …
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Extrinsic Cohesive Modeling of Dynamic Fracture and Microbranching Instability Using a Topological Data Structure
… by the CZM simulations. To better analyze mesh size dependence of the numerical scheme, an investigation of cohesive zone size is also presented, which indicates limitations of conventional cohesive zone size estimates in dynamic and rate-dependent problems.
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