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 9 of 9 for “"flux gradient"”.
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Effects of neutron flux gradient and detector-vibrator geometry on the local-global responses of the UTR-10 reactor
<p>http://www.worldcat.org/oclc/8741798</p>
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Advanced nodal methods for MOX fuel analysis
… MOX and U02 assemblies creates a large thermal flux gradient at the interface between these assemblies. Current nodal methods, which use a transverse leakage approximation, have difficulty modeling this gradient. In this thesis, an advanced nodal method is introduced which uses a …
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The atmospheric boundary layer above the Agulhas current
… effects on the overlying atmosphere. Air-sea fluxes of momentum, sensible and latent heat and resultant boundary layer characteristics demonstrate high horizontal inhomogeneity. The results suggest that this inhomogeneity is permanent. The spatial heat flux gradient is reflected in the …
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Field measurement of the fate of atmospheric H₂ in a forest environment : from canopy to soil
… lab measurements. In the field, ecosystem-scale flux measurements of atmospheric H₂ were made both above and below the forest canopy for over a year using a custom, automated instrument at the Harvard Forest. H₂ fluxes were derived using a flux-gradient technique from the H₂ concentration …
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The biogeochemistry of 210Pb and 210Po in fresh waters and sediments
… that might influence the distribution and fluxes of the radionuclide in ways that could effect 210Pb sediment dating. A mass balance for the epilimnion showed that 210Pb inputs by precipitation were matched by outputs on settling particles, indicating that direct uptake by bottom sediments …
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Representation of eddies in climate models by a potential vorticity flux
… equations. This force manifests itself as a flux of potential vorticity (PV) - a quantity that incorporates both eddy momentum and heat transporting properties. Moreover, the dynamic velocities are those of the residual mean circulation, a much more relevant velocity for understanding heat …
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Representation of eddies in climate models by a potential vorticity flux
… equations. This force manifests itself as a flux of potential vorticity (PV) - a quantity that incorporates both eddy momentum and heat transporting properties. Moreover, the dynamic velocities are those of the residual mean circulation, a much more relevant velocity for understanding heat …
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Biosphere-atmosphere exchange of ammonia from a fertilized corn canopy in Central Illinois
… This research seeks to provide new measured NH3 fluxes through an experimental field campaign in central Illinois, to investigate dependence of NH3 flux on environmental conditions and field management practices, and to evaluate closure of field measurements and modeled NH3 fluxes. Two …
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A study on the ion temperature gradient driven turbulence in tokamak plasmas
… in the necessity of minimizing the heat fluxes out of the plasma. The heat fluxes observed experimentally in tokamak plasmas are much higher than those that can be ascribed to collisions. This so called anomalous transport is largely controlled by the destabilization of low frequency …