Index Catalog // ScholarsArchive@OSU

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:: and Chaetosiphon fragaefolii (Cockerell) Abstract approved: Redacted for Privacy Richard G. Clarke

Aphid age and in-vector virus concentration as factors influencing pea enation mosaic virus transmission by the pea aphid

Creator:: Suharto, Hendarsih
Abstract:: The relationship between pea enation mosaic virus (PEMV) and aging pea aphids was studied. Although this research initially emphasized the relationship between the decline in the rate of PEMV transmission and the 'concentration of PEMV within pea aphids, aphid age was found to be the principle factor influencing transmission. Enzymelinked...
Resource Type:: Masters Thesis
Full Text:: sincere gratitude to my major professor, Dr. Richard G. Clarke, for his encouragement, guidance

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:: committee, Drs. Clarke, Berry, Ticknor, Brooks, and Petersen, which was required to assist me in the

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:: . Clarke Two types of exogenous mortality factors, density-independent and density-dependent, were

Mathematical modeling of selection and crossbreeding in beef cattle

Creator:: Clarke, Stephen Emil
Abstract:: A mathematical model was developed to simulate alternative selection and crossbreeding strategies for commercial beef production. Biological and economic constraints were selected to represent typical pasture production of calves in the Northwest. The crossbreeding study evaluated the relative economic efficiency of different 1) mating plans when sire breeds of several...
Resource Type:: Dissertation
Full Text:: Beef Cattle AN ABSTRACT OF THE THESIS OF STEPHEN EMIL CLARKE for the degree of DOCTOR OF PHILOSOPHY

Subdivision of the genus Klebsiella on the basis of DNA-DNA membrane filter hybridization

Creator:: Woodward, Barton Clarke
Abstract:: The molecular relationship of 39 biochemically identified strains of Klebsiella pneumoniae was determined by DNA-DNA hybridization experiments. Cultures examined were isolated from vegetables, pulp mills, drinking water and clinical (human and animal) habitats. These organisms produced reassociation values of 7% to 100% with ATCC 13882 K. pneumoniae as the labeled...
Resource Type:: Masters Thesis
Full Text:: membrane filter hybridization AN ABSTRACT OF THE THESIS OF BARTON CLARKE WOODWARD for the degree MASTER

A microdetermination of hydroxyl and acetate contents of sugars and glycosides

Creator:: Clarke, Ray Allen
Resource Type:: Masters Thesis
Full Text:: s1ihtly to be applicable for lipid.s and. hy- droxylated. fatty acids. M. reed. and. H. ilk. iynne (14

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

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:: of the Glen Aiken Creek Embankment Failure AN ABSTRACT OF THE THESIS OF JAMES DENNIS CLARKE for

ScholarsArchive@OSU

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

Aphid age and in-vector virus concentration as factors influencing pea enation mosaic virus transmission by the pea aphid

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

Mathematical modeling of selection and crossbreeding in beef cattle

Subdivision of the genus Klebsiella on the basis of DNA-DNA membrane filter hybridization

A microdetermination of hydroxyl and acetate contents of sugars and glycosides

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

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

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