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Filtering by: Funding statement E.R. Jackman internship support program Decade 1980-1989

Effect of molecular conformation on the surface properties of polyelectrolyte solutions : xanthan gum model studies

Creator:

Young, San Land

Abstract:

A commercially important polyelectrolyte, xanthan, was chosen for a systematic analysis of the relationship between molecular conformation and surface properties. In the first study the effects of ionic strength, xanthan concentration and temperature on the xanthan molecular conformation were investigated by potentiometric titration. The effects of the same factors and...

Resource Type:

Masters Thesis

Full Text:

help in defining academic and research program, and my present advisor, Dr. J. Antonio Torres, for
Habitat use and densities of cavity-nesting birds in the Oregon Coast Range

Creator:

Nelson, S. Kim

Abstract:

I studied abundance patterns and habitat use of eight cavitynesting bird species in the Coast Ranges of Western Oregon during the spring and summer of 1985 and 1986. Three age classes of unmanaged Douglas-fir (Pseudotsuga menziesii) stands were selected for study: young (40-80 yrs), mature (80-200 yrs), and old-growth (>200...

Resource Type:

Masters Thesis

Full Text:

, and Dr. Thomas A. Spies for their guidance, support, and continued interest in this project. The
Soil moisture storage, distribution, and use by winter wheat in a 250-350 mm precipitation zone of eastern Oregon

Creator:

Henderson, Robert L.

Abstract:

The semi-arid dryland wheat-producing areas of the Pacific Northwest are characterized by cool, moist winters and dry, hot summers. The amount of annual precipitation is generally quite variable and inadequate for annual cropping. Where soil depth is adequate, the predominant loessal soils generally supply sufficient moisture for small grain production...

Resource Type:

Masters Thesis

Full Text:

participation in an M.S. graduate program a very rewarding experience. First, I want to thank Dr. Floyd Bolton