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Hybrid computer simulation of wind-driven ocean currents

Creator:: Vithayathil, Francis Joseph
Abstract:: A simulation method using a hybrid computer is developed in this dissertation to enhance the study of wind-driven ocean circulation. The simulation is based on the mathematical model developed by Ekman. Pure digital simulation is not economical due to excessive computer time required for the solution of the partial differential...
Resource Type:: Dissertation
Full Text:: . Saunders and H. F. Davis for supervising his doctoral program, Due to the interdisciplinary nature of this

Seasonal distribution of nutrients off the coast of Oregon, 1968

Creator:: Ball, David Stephen
Abstract:: Phosphate, silicate and nitrate concentrations in the sea off the coast of Oregon were determined to study their seasonal distribution patterns. The water samples were collected monthly along the east-west hydrographic line off Newport, Oregon, from the shore to 165 miles (310 km) offshore. The samples were analyzed by both...
Resource Type:: Masters Thesis
Full Text:: drafts. I also acknowledge Dr. Lawrence F. Small, Dr. Edward H. Piepmeier and Dr. Gerald E. Davis for

Sediment characteristics and the trophic status of four Oregon lakes

Creator:: Meyerhoff, Roger Dean
Abstract:: There is evidence that recent ecological changes in lakes and their watersheds can be detected from analysis of lake sediments. This study was initiated to correlate changes in some sediment characteristics of four Oregon lakes with past cultural developments of the lakes and their watersheds. The lakes chosen for this...
Resource Type:: Masters Thesis
Full Text:: various aspects of this project. I wish to thank L. Lamperti, E. Robinson-Wilson, and F. Hutchinson for

An examination of the Clarno Formation in the vicinity of the Mitchell Fault, Lawson Mountain and Stephenson Mountain Area, Jefferson and Wheeler Counties, Oregon

Creator:: Owen, Philip C.
Resource Type:: Masters Thesis

A comparison of in vivo and in vitro techniques for the evaluation of varying roughage-concentrate rations

Creator:: Klett, Ramon Hollis
Abstract:: The objective of this study was to compare the total collection (in vivo), nylon bag, and in vitro digestibility techniques under standardized conditions. Twin steers were used simultaneously to measure the digestibility of five rations consisting of the following ratios of alfalfa hay to steamed roller barley: 4:0 (I), 3:1...
Resource Type:: Dissertation
Full Text:: during my stay at Oregon State University. Dr. F. L. Hisaw Jr. and Dr. P. H. Weswig who so capably

Nitrate-nitrogen accumulation in the surface soil during the fallow period under different precipitation levels and tillage systems

Creator:: Senel, Atila Huseyin
Abstract:: The effects of different fallow moisture levels and tillage systems on the amount of nitrate-nitrogen accumulation in the 0-30 cm soil profile were studied. Fallow moisture treatments simulating typical dry, normal and wet precipitation cycles were established on trial plots. Data were obtained for nitrate-nitrogen, soil moisture and nitrogen mineralization...
Resource Type:: Masters Thesis
Full Text:: thanks to Dr. Floyd E. Bolton for his encouragement, help and friendship. I thank Dr. D. F. Grabe and Dr

Productivity and nesting habitat of Great Basin Canada geese : Umatilla National Wildlife Refuge

Creator:: McCabe, Thomas R.
Abstract:: Great Basin Canada goose (Branta canadensis moffitti) productivity and nesting habitat utilization were studied on the Columbia River within the boundaries of the Umatilla National Wildlife Refuge during the springs of 1974 and 1975. Five islands, BL-1, BL-2, SD-1, SD-2, and Telegraph Island (TI), contained 88 percent of the nesting...
Resource Type:: Masters Thesis
Full Text:: Jarvis, Dr. A. H. Winward, and Dr. F. Conklin for their time and critical review of my thesis. Also, I

Search for a western North American stratotype for the Lower-Middle Devonian boundary in Eureka County, Nevada

Creator:: Brown, James Oliver
Resource Type:: Masters Thesis
Full Text:: - atic paleontology and the accompanying SEN photographs. K. F. Oles and W. H. Taubeneck helped review

Ternary arithmetic in direct digital control systems

Creator:: Seamans, David Alvin
Abstract:: The development of new electronic devices and design procedures applicable to ternary switching circuits suggests that it might be desirable to use ternary arithmetic in direct digital control systems. The advantages of decimal, binary, and ternary arithmetic in digital computers are discussed and a set of rules for signed -digit...
Resource Type:: Dissertation
Full Text:: encouragement during the preparation of this dissertation and to Professors L. J. Weber~ F. H. Young, and H

Physiology of senescence of the shoot apex in Pisum sativum L.

Creator:: Ecklund, Paul Richard, 1941-
Abstract:: Shoot apex senescence is defined as the collective progressive and deteriorative processes which ultimately terminate the functional life of the shoot apex. Senescence of shoot apices of Pisum sativum L. 'Alaska' as measured by cessation of stem elongation was delayed by removal of flowers and by treatment with gibberellin A₃...
Resource Type:: Dissertation
Full Text:: also expressed to Drs. H. J. Evans, F. H. Smith and R. R. Becker for their service on my committee

ScholarsArchive@OSU

Hybrid computer simulation of wind-driven ocean currents

Seasonal distribution of nutrients off the coast of Oregon, 1968

Sediment characteristics and the trophic status of four Oregon lakes

An examination of the Clarno Formation in the vicinity of the Mitchell Fault, Lawson Mountain and Stephenson Mountain Area, Jefferson and Wheeler Counties, Oregon

A comparison of in vivo and in vitro techniques for the evaluation of varying roughage-concentrate rations

Nitrate-nitrogen accumulation in the surface soil during the fallow period under different precipitation levels and tillage systems

Productivity and nesting habitat of Great Basin Canada geese : Umatilla National Wildlife Refuge

Search for a western North American stratotype for the Lower-Middle Devonian boundary in Eureka County, Nevada

Ternary arithmetic in direct digital control systems

Physiology of senescence of the shoot apex in Pisum sativum L.

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