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 186 for “"aspen"”.
-
An analysis of the Aspen housing market
Aspen, Colorado, has a booming economy, and there is the potential for working residents to earn substantial incomes. Purchasing a home is not an option for most wage earners, though, because the average home price is over a million dollars. Much of the existing housing stock in Aspen and Pitkin …
-
Aspen mycorrhizae: ecology, syntheses and growth studies
The ectomycorrhizal communities of three aspen-covered sites in southwestern Montana and southeastern Idaho with varying stand age, conditions, and soil types were compared. In all, 39 species of ectomycorrhizal fungi were associated with P. tremuloides. Dominant fungal species varied by site. …
-
Late-Mississippian paleokarst in the Aspen, Colorado area
Includes bibliographical references.
-
Optimization of Great Plains Coal Gasification Using Aspen/SP
… plant's operations is of prime importance. An ASPEN/SP model of a Lurgi coal gasifier that will predict the impact of variable input parameters, such as coal composition and reactant feed flows, on production rates and efficiency is the first step in constructing a model of the entire plant to …
-
Ecological and taxonomic studies of ectomycorrhizal fungi associated with Aspen
A discrete aspen clone was sampled for ectomycorrhizal sporocarps over 4 years in an area impacted by copper mining in Butte, Montana. Locations of sporocarps were noted and species identified. A majority of the mycorrhizal fungi found in the aspen stand were early colonizers or species …
-
A computer model of the rectisol process using the Aspen Simulator
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1982.
-
A comparison of Aspen and Pine Communities in the Northern Black Hills
Three study areas, each containing an aspen (Populus tremuloides) community, a pine (Pinus ponderosa) community, and a mixed aspen-pine community, were studied during the summers of 1968, 1969, and 1970. Soil chemistry, plant chemistry, overstory density, understory production, and use by whitetail …
-
Modeling Of USS Gasification To Evaluate New Gasifier Design In Aspen Plus
… completed at Ohio. The RGIBBS reactor module in ASPEN PLUS, which performs calculation using the Gibbs free energy minimization concept is used to simulate the gasification process. The model compositions were then compared with the experimental syngas composition. The simulation was performed …
-
Habitat influences on avian diversity and reproductive success in western aspen forests
Aspen forests hold a high diversity of organisms, but these forests are declining in western North America. A major correlate of aspen decline is conifer encroachment, where conifer trees gradually replace aspen trees through competition for space and light. Conifer encroachment on an aspen stand …
-
Habitat influences on avian diversity and reproductive success in western aspen forests
Aspen forests hold a high diversity of organisms, but these forests are declining in western North America. A major correlate of aspen decline is conifer encroachment, where conifer trees gradually replace aspen trees through competition for space and light. Conifer encroachment on an aspen stand …
-
Process simulation and economic evaluation of a solar power plant using Aspen
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1980.
-
Utilization of Aspen Pellets as a Partial Roughage Replacement for Lactating Dairy Cows
… containing either (A) 30% dry matter from aspen pellets, 30% OM from corn silage, and 40% DM from a 28% crude protein· concentrate mix, or (B) 60% OM from corn silage and 40% OM from the concentrate mix, to determine if aspen could serve as a partial roughage for lactating dairy cows. All …
-
Elk hunting on Turnbull National Wildlife Refuge: impacts on elk movement and aspen regeneration
<p>"In the arid West, quaking aspen (Populus tremuloides) cover less than 10% of the forest landscape, yet support a disproportionate diversity of native plants and animals. When elk (Cervus elaphus) become overabundant, browsing prevents aspen regeneration, reduces survival, and consequently …
Page 1 of 10