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Quantifying the Unproductive Water Lost as Evaporation from Different Irrigation Designs by Analysis of the Soil Stable Water Isotope Compositions

Creator:: Al-Oqaili, Firas M.
Abstract:: The knowledge about the intensive agricultural irrigation is very limited, but the use of irrigation is rapidly increasing. As an outcome, the sympathetic ecosystem is accepting modern irrigation that will play an essential function in the present and future for agricultural products. My dissertation will display the modification for investigation...
Resource Type:: Dissertation
Full Text:: . CONTRIBUTION OF AUTHORS Delete this page if there are no contributing authors. Margins requirements apply

Part I: Synthetic Studies toward C10-functionalized Lycopodium Alkaloids. Part II: Exploration of the Pummerer Cyclization and Its Application to the Total Syntheses of the Abietane Diterpenoids

Creator:: Li, Xin
Abstract:: This dissertation is separated into two parts according to the two major distinct research projects. In Part I, the full account of synthetic studies toward C10-functionalized lycopodium alkaloids is described. In Part II, the detailed discussion on the exploration of the Pummerer cyclization methodology and its application to the total...
Resource Type:: Dissertation

Influences of the duration of periodic sway on the stem form development of four-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Creator:: Carlton, Ronald Roy
Abstract:: Stem form development of trees in response to wind has been established in the literature to be a response to stem sway induced by the wind. The response is manifested in modifications to height and diameter growth which strengthen the stem against wind stresses. Experiments in the literature show that...
Resource Type:: Masters Thesis
Full Text:: seasons of the year. No differences between treatments were found.. Wind strength at the study site may

Controlling water temperatures with buffer strips

Creator:: Brazier, Jon Roger
Abstract:: Buffer strips have been proposed as a method for controlling temperature changes in streams adjacent to clear-cuttings. Nine small mountain streams in Oregon's Coast Range and Cascade Mountains were studied to determine the influence of buffer strips on water temperature. Timber volume in the strip, strip width, and canopy density...
Resource Type:: Masters Thesis

Soil engineering properties and vegetative characteristics for headwall slope stability analysis in the Oregon coast range

Creator:: Bransom, Mark
Abstract:: Six headwalls in the central Oregon coast range were selected for study of soil engineering properties and vegetativecharacteristics important for analysis of slope stability. The headwalls were considered representative of those which would be candidates for timber leave areas due to geomorphic and topographic features, including steepness of slope and...
Resource Type:: Masters Thesis
Full Text:: downslope end. Of the six, only one headwall had evidence of recent debris-avalanche activity. No

The geography of the apple industry of the Chelan Valley, Washington

Creator:: Detering, Floyd John
Abstract:: The Chelan Valley is one of several valleys located on the eastern slope of the Cascade Mountains contributing to the leadership of Washington in apple production. Since the nature of the activity in the Chelan Valley is typical of all these producing areas,it was selected as a case study of...
Resource Type:: Masters Thesis
Full Text:: especially valuable in an economy that stressed self-sufficiency. There was almost no commercial production

Identifying Audiences: A Rhetorical Analysis of Mary Shaw’s Suffrage Plays

Creator:: Wright, Amanda R.
Abstract:: American women’s quest for equality came into focus in the early 1900s. Amidst the cultural and societal forces pushing for suffrage, some chose the mechanism of theater. This thesis is a work of rhetorical criticism. It applies Lloyd Bitzer’s situational approach to two suffrage theater artifacts: Mary Shaw's The Woman...
Resource Type:: Masters Thesis
Full Text:: that suffragists were able to exploit. The characterization of weak-willed women left no room for

Assessing the knowledge of county extension agents on geotextile applications for agricultural practices in Oregon and Idaho

Creator:: Brown, Linda Lee
Abstract:: The purpose of the study was to assess county extension agents' knowledge of geotextiles; to determine their current level of information and their location on an adoption-diffusion curve; and to determine the agents' attitudes toward the potential use of geotextiles in agriculture, specifically in soil erosion control. A questionnaire was...
Resource Type:: Masters Thesis
Full Text:: of, geotextile use in agricultural practices. No significant relationship could be confirmed

Surface-subsurface geology of the middle to upper Eocene sedimentary and volcanic rock units, western Columbia County, northwest Oregon

Creator:: Berkman, Thomas Anthony
Abstract:: The middle to upper Eocene Tillamook Volcanics form the basement in the Rock Creek - Rocky Point area. These tholeiitic to alkalic basalts, basaltic andesites, and andesites were erupted as shield volcanoes seaward of the strandline ontop of an older deep-marine mudstone unit (Yamhill Formation) and an accreted portion of...
Resource Type:: Masters Thesis

Geology of the Antone district of Wheeler County, Oregon

Creator:: Dobell, Joseph Porter
Abstract:: The area studied in detail, known as the Antone District, is located in the southeast corner of Wheeler County, Oregon, , between longitude 119 37. and 119°54 east, and latitude 44°23 and 44°3O' north. Surface elevations range from 3050 feet above sea level in the northeast corner of the district,...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Quantifying the Unproductive Water Lost as Evaporation from Different Irrigation Designs by Analysis of the Soil Stable Water Isotope Compositions

Part I: Synthetic Studies toward C10-functionalized Lycopodium Alkaloids. Part II: Exploration of the Pummerer Cyclization and Its Application to the Total Syntheses of the Abietane Diterpenoids

Influences of the duration of periodic sway on the stem form development of four-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Controlling water temperatures with buffer strips

Soil engineering properties and vegetative characteristics for headwall slope stability analysis in the Oregon coast range

The geography of the apple industry of the Chelan Valley, Washington

Identifying Audiences: A Rhetorical Analysis of Mary Shaw’s Suffrage Plays

Assessing the knowledge of county extension agents on geotextile applications for agricultural practices in Oregon and Idaho

Surface-subsurface geology of the middle to upper Eocene sedimentary and volcanic rock units, western Columbia County, northwest Oregon

Geology of the Antone district of Wheeler County, Oregon

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