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Differential transmission of strawberry mottle virus by Chaetosiphon thomas Hille Ris Lambers and Chaetosiphon fragaefolii (Cockerell)

Creator:: Eulensen, Gustav Egon
Abstract:: The transmission of strawberry mottle virus (SMV) to Fragaria vesca L. by Chaetosiphon thomasi and C. fragaefolii was studied to determine differences between the two species. Acquisition, inoculation, and retention phases of transmission were described. In all phases, C. fragaefolii was found to be the more efficient vector. Mean transmission...
Resource Type:: Masters Thesis
Full Text:: Gustav E. Eulensen for the degree of Master of Science in Entomology presented on December 12, 1980

Life history of the Obscure Root Weevil, Sciopithes obscurus (Horn), on rhododendron

Creator:: Bell, Harry Thomas
Abstract:: The life history of the Obscure Root Weevil, Sciopithes obscurus (Horn), on Rhododendron was studied at four sites in the Willamette Valley. This research was conducted in an effort to provide information necessary to develop adequate methods to control this Curculionid pest on Rhododendron in the Willamette Valley. Five larval...
Resource Type:: Masters Thesis
Full Text:: . Pleasant Hill, Oregon. a) C rq C D t) cn 1-4 Ch (D NO CD Clq 0 H O U S E S E C A S E C .3 o 7

Examination of factors affecting larval mortality of the black vine weevil, Otiorhynchus sulcatus Fab., on container grown rhododendrons

Creator:: La Lone, Ralph Stanley
Abstract:: Two types of exogenous mortality factors, density-independent and density-dependent, were identified for the black vine weevil, Otiorhynchus sulcatus Fab., developing on container grown rhododendrons. The addition of the insecticide acephate, (O.S.- Dimethyl acetylphosphoramidothioate, Orthene®)75S) to the rhizosphere of rhododendrons in which larval O. sulcatus develop was categorized as a density-independent...
Resource Type:: Masters Thesis
Full Text:: H 2 0 d Total number of larvae in four replications. e Adjusted mortality = treatment - water

Some aspects of Western religious thought and man's use of land

Creator:: Bryant, Robert Edman
Abstract:: This study examines a limited number of selected themes in Judeo-Christian, or Western, religious thought and their implications for man's use of land, with the objective of discovering the influence of Western religion on attitudes toward nature and land. Five themes are examined: dominion of man; stewardship; contempt for, and...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for privacy Ronald O.'Clarke, Professor of Religious Studies This study

A study of the whole job (multi-position) approach as compared to the traditional (single-position) approach in the development of arc welding skills

Creator:: Stemmer, Roland Clarke
Abstract:: The major consideration of this study was the testing of the superiority of the whole or part method for developing basic arc welding skills. Data were also generated which facilitated investigation of: (1) the relationship of welding skill development to cognitive attainment of welding information as measured by welding proficiency...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF ROLAND CLARKE STEMMER for the

The synthesis of amino alcohols derived from pyrimidines

Creator:: Clarke, Ray Allen
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS 0F Ray Allen Clarke for the

A microdetermination of hydroxyl and acetate contents of sugars and glycosides

Creator:: Clarke, Ray Allen
Resource Type:: Masters Thesis
Full Text:: . B. E. Christensen Thr his generous assistance and. encouragement d.uring the course o±' this 'vork

The design, construction and calibration of a low-energy, low exposure-rate ionization chamber

Creator:: Clarke, Arthur Porter
Abstract:: A low-energy, low-exposure-rate, guarded-field ionization chamber system with a sensitive volume of approximately 1040 cm³ and an exposure-rate range from 60 mR/h to less than 0.5 mR/h was designed, constructed and calibrated. The calibration was effected by constructing and calibrating a 60 cm³ volume transfer chamber of similar design against...
Resource Type:: Masters Thesis
Full Text:: Instrumentation. C 1 - Chambe r C2 Capacitor H - Chamber high voltage P - Potentiomete r E - Electrometer S

Prostate cancer prevention with broccoli : from cellular to human studies

Creator:: Clarke, John D.
Abstract:: Prostate cancer is the second leading cause of cancer related death in American men. Epidemiologic studies suggest that cruciferous vegetable intake may lower the risk for many cancers, including prostate and colon. Isothiocyanates (ITC) are phytochemicals derived from cruciferous vegetables such as broccoli, Brussels sprouts, cauliflower, and cabbage that may...
Resource Type:: Dissertation
Full Text:: Human Studies John D. Clarke, Roderick H. Dashwood, Emily Ho

The evaluation of the field vane shear strength analysis of the Glen Aiken creek embankment failure

Creator:: Clarke, James Dennis
Abstract:: A post-failure investigation of a highway embankment constructed over organic and sensitive subsoils was made with a series of field vane tests. The results indicated that the embankment was quite stable, and, therefore, the reliabilities of both the Φ = 0 slip-circle analysis and the field vane results seemed to...
Resource Type:: Masters Thesis
Full Text:: Graduate School Date thesis is presented e. E? Typed by Marion F. Palmateer for James Dennis Clarke a

ScholarsArchive@OSU

Differential transmission of strawberry mottle virus by Chaetosiphon thomas Hille Ris Lambers and Chaetosiphon fragaefolii (Cockerell)

Life history of the Obscure Root Weevil, Sciopithes obscurus (Horn), on rhododendron

Examination of factors affecting larval mortality of the black vine weevil, Otiorhynchus sulcatus Fab., on container grown rhododendrons

Some aspects of Western religious thought and man's use of land

A study of the whole job (multi-position) approach as compared to the traditional (single-position) approach in the development of arc welding skills

The synthesis of amino alcohols derived from pyrimidines

A microdetermination of hydroxyl and acetate contents of sugars and glycosides

The design, construction and calibration of a low-energy, low exposure-rate ionization chamber

Prostate cancer prevention with broccoli : from cellular to human studies

The evaluation of the field vane shear strength analysis of the Glen Aiken creek embankment failure

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