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 77 for “"Source-sink"”.
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Experiments in a rotating source-sink annulus
… of the different flow regimes in a rotating source-sink annulus is described. Both the steady and transient velocities are measured over a large range of Ekman Reynolds number and Rossby number. Differing probe configurations are used to investigate the corresponding motions in spatially …
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Experiments in a rotating source-sink annulus.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1971.
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Signal transduction during defense response and source-sink transition in tomato
… some common elements. Both the induction of sink metabolism and defense response is dependent on signal transduction pathways involving protein phosphorylation. Furthermore, regulation of extracellular invertase (INV) and phenylalanine ammonia lyase (PAL) which are markers for sink metabolism …
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Numerical study of heat source/sink effects on dissipative magnetic nanofluit flow from a non-linear inclined stretching and shirinking sheet
… and shrinking sheet in the presence of heat source/sink and vicious dissipation. The governing coupled nonlinear momentum and thermal boundary layer equation are transform into a system of ordinary differential equations via similarity transformation with appropriate boundary condition. The …
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Unsteady hydromagnetic chemically reacting mixed convection MHD flow over a permeable stretching sheet embedded in a porous medium with thermal radiation and heat source/sink
… a porous medium with thermal radiation and heat source/sink is investigated numerically. The original partial di erential equations are converted into ordinary di erential equations by using similarity transformation. The governing non-linear partial di erential equations of Momentum, Energy, and …
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Evolutionary Debris Modeling of LEO and Cis-Lunar Space
… of space debris evolution in these regions. Source-sink models allow for the study of debris evolution by considering various sources and sinks of debris, including atmospheric drag and fragmentation events. In this thesis, the evolution of the LEO environment is studied using a source-sink …
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Chaos in Pulsed Laminar Flow
… fluid is injected (or extracted) is called a source (or a sink). In a bounded domain, one source and one sink with equal strength operate together as a source-sink pair to conserve the fluid volume. Fluid flow between two closely spaced parallel plates is modeled as Hele-Shaw flow with the …
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MHD stagnation flow of nanofluid past a permeable shrinking surface with various conditions
… study is to analyze the effects of slip and heat source/sink on magnetohydrodynamic stagnation-point flow and heat transfer past a permeable shrinking surface with convective boundary condition. The velocity and temperature profiles are analyzed with respect to the involved parameter such as slip …
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Metabolite Profiling of Leaves and Vascular Exudates in Soybean Grown Under Free-Air Concentration Enrichment
… in the leaves for a better explanation of source-sink relationships. It is hoped that the results will facilitate the phenotyping of C3 species allowing for the breeding of better adapted crops.
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Optimal harvesting theory for predator-prey metapopulations / Asep K. Supriatna.
… and Lagrange multipliers. Rules about harvesting source/sink populations, more/less vulnerable prey subpopulations and more/less efficient predator subpopulations are explored. Strategies for harvesting critical prey subpopulations are suggested.
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Investigating Root Storage and Exudation in the Brachypodium Genus
In plants, sources are the tissues where a specific nutrient is absorbed or fixed into a plant, and sinks are the tissues in the plant where the nutrients are dispersed after they are absorbed or fixed. In the case of carbon, leaves tend to be the source, as most photosynthesis occurs in the …
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Computational analysis of magnetohydrodynamics boundary layer flow of nanofluid over a stretching sheet in the presence of heat generation or absorption and chemical reaction
… Reynolds number, Prandtl number, constant, heat source, Brownian motion, and Thermophoresis are analysed and compared. The numerical results for velocity, temperature, skin friction coefficient, concentration, Sherwood number, and Nusselt number are presented in tabular form and visualized …
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Biogeochemical Controls on Carbon Fluxes in a Restored Coastal Freshwater Forested Wetland
… that promote the accumulation of carbon in sinks and those that govern the release of carbon (e.g. act as carbon sources). The research described here evaluates the role of vegetation in carbon source/sink dynamics in a restored coastal freshwater forested wetland.
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Interrelationships between Soybean Seed Quality Characteristics
… Examination of soybean protein across genetic sources and environments has indicated that the abundance of potentially limiting amino acids within soybean protein may be influenced by the seed protein concentration. Our objective was to evaluate the effects of seed protein concentration on …
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Characterization of signaling pathways underlying key growth and development processes in Populus trichocarpa
… were to manipulate Populus trichocarpa source-sink relationships to optimize this woody crop species for specific agricultural traits such as increased growth rate, stress tolerance and/or improvements in overall biomass accumulation. We targeted specific tissues such as xylem, where …
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Photosynthetic rates of Ilex crenata thunb. 'helleri' during propagation
… levels. These relationships may be indicative of source-sink interactions on the Pn rate of Helleri holly cuttings. An exogenous basal application of indolebutyric acid (IBA) contributed to an increase in cutting Pn, as was the case with the addition of mineral nutrients.
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Development of instrumentation for acoustic monitoring
This thesis describes a source/sink flow acoustic wave sensor for the identification of leaks in gas pipelines. One of the many type of signals associated with the high velocity gas flowing out of a hole in the pipeline is the ramp or step pressure drop.;A large 3-inch diameter diaphragm was …
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Erweiterung der `Localized Near Field' Theorie zur Bestimmung von Quellstärken bei beliebiger thermischer Schichtung in einem Waldbestand
… the relation between concentration profiles and source/sink profiles inside the plant canopy. This work describes a general method based on the LNF to calculate source distributions from measured concentration profiles inside a plant canopy. The LNF is used for the first time to examine the …
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