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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:: Chaetosiphon thomas Hille Ris Lambers and Chaetosiphon fragaefolii (Cockerell) AN ABSTRACT OF.THE THESIS OF

A revision of the genus Deraeocoris Kirschbaum (Heteroptera:Miridae) from western America north of Mexico

Creator:: Razafimahatratra, Vincent de Paul
Abstract:: The genus Deraeocoris Kirschbaum of western America north of Mexico was revised. Approximately 10,000 specimens from the Nearctic Region were examined. Taxonomic characters used by previous authors were reevaluated. In addition to the male parameres, the male vesica and the female posterior wall of the bursa copulatrix and sclerotized rings...
Resource Type:: Dissertation
Full Text:: , D. cochise, D. gilen- sis, D. knightonius, and D. schuhi are described. D. incertus variety

Synthesis of two subunits of avermectin B1a

Creator:: Dantanarayana, Anura Pathmasiri
Abstract:: Avermectins are a group of potent anthelmintic agents produced by Streptomyces avermitilis. They are active at extremely low dosages and are now in commercial use. In this study, the synthesis of two segments of avermectin B[subscript 1a] are described. The synthesis of the hexahydrobenzofuran subunit (segment A) began with the...
Resource Type:: Dissertation
Full Text:: approved: Redacted for privacy (it James D. White Avermectins are a group of potent anthelmintic agents

A revision of the black grass bug genus Irbisia Reuter (Heteroptera:Miridae)

Creator:: Schwartz, Michael David
Abstract:: The black grass bug genus Irbisia Reuter was revised. Over 18,000 specimens were examined and information concerning the biology, host plant and distributional relationships of the species was compiled. In addition to external characters, the male claspers and vesica, and the female dorsal libiate plate of the bursa copulatrix and...
Resource Type:: Masters Thesis
Full Text:: ) Abstract approved: Redacted for privacy John D. Lattin The black grass bug genus Irbisia Reuter was

Relationship between pore size, particle size, aggregate size and water characteristics

Creator:: Wu, Laosheng
Abstract:: Soil pore size distribution and water characteristics are important for water storage, water movement, and soil-plant interaction studies. Laboratory determinations of water characteristics and pore size distribution are time consuming and costly. Investigators have proposed many models to predict them from routinely available data. Most of the models are related...
Resource Type:: Masters Thesis
Full Text:: equation d pore = R x d x , where R x is the ratio coefficient of pore diameter to the diameter of

Structural characterization of the cardiac muscarinic acetylcholine receptor

Creator:: Rosenbaum, Larry C.
Abstract:: The physical properties of the purified cardiac muscarinic acetylcholine receptor have been examined by D₂O/H₂O sucrose gradient sedimentation and sephacryl S-300 gel filtration in Triton X-405 and dodecyl-β-maltoside. From the sedimentation experiments, the partial specific volume of the receptor-Triton X-405 complex were 0.813 cm³/g and 5.30 S, respectively and the...
Resource Type:: Masters Thesis
Full Text:: Biophysics Redacted for Privacy Dean of Graduat School d Date thesis is presented May 4, 1987 Typed by

Phosphorus characterization in Sri Lankan Alfisols : Soprition, fractions, plant availability and soil test suitablitiy

Creator:: Sattell, Robert R.
Abstract:: Twelve Sri Lankan Alfisols were characterized for P. Soils were incubated for three weeks with sufficient P applied (P2) to elevate soil solution P to 0.2 ug P/g solution as determined by sorption curves, with 75 percent of P2 (P1), and without P (P0). For PO treatments, (a) organic P,...
Resource Type:: Masters Thesis
Full Text:: NaOH extractable "moderately labile" inorganic P, and (d) concentrated HC1 extractable residual P

Influences of environmental acidification on salmonid reproduction

Creator:: Weiner, Gary S.
Abstract:: Reproduction of salmonid fishes in acidic water was studied using the rainbow trout (Salmo gairdneri). Adult trout were exposed to various levels of hydrogen ion (pH levels 4.5, 5.0, 5.5, and control [6.5 to 7.1]) during the final 6 weeks of reproductive maturation. Reduced survival rates of the progeny of...
Resource Type:: Masters Thesis
Full Text:: Privacy Head of Department of Fisheries and Wildlife Redacted for Privacy Dean of G u te School d Date

Performance analysis of network based file systems

Creator:: Garimella, Krishna S.
Abstract:: The performance of multi-user workstations that access files over a local area network is studied. Such file systems, called distributed file systems, provide access of remote file systems with a great degree of transparency. The main objectives are To study the principles of distributed file systems. specifically NFS from Sun...
Resource Type:: Masters Thesis
Full Text:: results are a summary of tests done by Joshua Levy of Atherton Corporation [4] . 1.3 Conclusions The

Characterization of the replication, incompatibility, and recombination regions of Pseudomonas syringae pv. phaseolicola plasmid pEXC8080

Creator:: Poplawsky, Alan R.
Resource Type:: Dissertation
Full Text:: INTRODUCTION 1 I. Plasmids 1 A. General 1 B. Replication 3 C. Partitioning 6 D. Incompatibility 8 II. Plasmid

ScholarsArchive@OSU

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

A revision of the genus Deraeocoris Kirschbaum (Heteroptera:Miridae) from western America north of Mexico

Synthesis of two subunits of avermectin B1a

A revision of the black grass bug genus Irbisia Reuter (Heteroptera:Miridae)

Relationship between pore size, particle size, aggregate size and water characteristics

Structural characterization of the cardiac muscarinic acetylcholine receptor

Phosphorus characterization in Sri Lankan Alfisols : Soprition, fractions, plant availability and soil test suitablitiy

Influences of environmental acidification on salmonid reproduction

Performance analysis of network based file systems

Characterization of the replication, incompatibility, and recombination regions of Pseudomonas syringae pv. phaseolicola plasmid pEXC8080

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