Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 23 for “"double cross"”.
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Studies on pollinations and male-sterility in reciprocals of a double-cross corn hybrid
Call number: LD2668 .T4 1948 V35
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Studies on pollinations and male-sterility in reciprocals of a double-cross corn hybrid
Call number: LD2668 .T4 1948 V35
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The validation, cross-validation and double cross-validation of two indices of job satisfaction
Thesis (M.A.)--Michigan State University of Agriculture and Applied Science. Dept. of Psychology, 1955
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Ploidy Level Effects and Effects of Inbreeding on Single and Double Cross Performance in Autotetraploid Maize
… suggests that in autotetraploids performance of double crosses (DC) is expected to exceed that of single crosses (SC) if the SC parents are inbred. The objectives of this study were to determine (1) the effects of ploidy level per se on morphological traits and grain and stover yields in maize, …
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1. Reinvestigation of a catalytic, enantioselective alkene dibromination and chlorohydroxylation, 2. Double cross-coupling reactions of siloxaborolates, 3. The enantioselective synthesis of 3-substituted morpholines using computer-guided catalyst design
… of chemistry, in the Nobel Prizewinning field of cross-coupling. A bench-stable, crystalline siloxaborolate is described, capable of double cross-coupling reactions to form ortho-teraryls. The initial Suzuki reaction proceeded with high yields but the second, Hiyama-Denmark reaction proved …
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Deformation and tearing of uniformly blast-loaded quadrangular stiffened plates
… and 4x7mm; and configurations; none, single, double, cross and double cross; to provide the impulse required to give deformations up to plate tearing. In all the tests of Mode I category of large inelastic deformation, the plate profiles are characterised by a uniform global dome. The results …
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Maize variety performance under different management and environmental conditions
… x 4 management levels). Each type, i.e. single cross, double cross, three-way cross arid open pollinated, was represented by three entries. A split plot experimental design with three replications was used, the four management levels were the main plots and cultivars as subplots. The parameters …
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Maize variety performance under different management and environmental conditions
… x 4 management levels). Each type, i.e. single cross, double cross, three-way cross arid open pollinated, was represented by three entries. A split plot experimental design with three replications was used, the four management levels were the main plots and cultivars as subplots. The parameters …
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Isolation and characterization of new mutants of the cytochrome d terminal oxidase of Escherichia coli
… into a recBC sbcBC mutant of E. coli. A double cross-over event exchanges the wild-type and plasmid-encoded alleles to effect a replacement. This double cross-over event is screened for by the use of a positive drug marker linked to the replacement allele.
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Interaction cross sections needed for simulation of secondary electron emission spectra from thin metal foils after fast proton impact
… fast proton impact require reliable interaction cross sections with the target under consideration. Total and energy differential inelastic cross sections have been derived for aluminum, copper, and gold thin-metal foils within the plane-wave first Born approximation (PWFBA) that factorizes the …
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Quasi-four-dimensional characterization of dislocation interactions in FCC and HCP systems
… determined criteria for slip transfer across grain boundaries hold true at elevated temperature as well as room temperature. Details of the interactions observed at elevated temperatures, however, varied in that raising the temperature resulted in the interactions reaching higher levels …
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The association between divorce and patterns of child adjustment
… was investigated via internal replication and a double-cross validation using multiple discriminant analysis. The clusters obtained from the main sample did not evidence a high level of consistency across different subsets of the sample and the correct classification rates were low thus …
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Investigation of the prevalence of opportunistic gram negative pathogens in the water supply of a haematology unit, and the application of point-of-use filtration as an intervention.
… (POU-F) as a control measure. In a two-year double cross-over trial, water samples and swabs were taken weekly from 39 showers/taps on the unit. Four study phases alternated between non-filtered (Phases 1 & 3), and filtered outlets (Phases 2 & 4) using Pall AquasafeTM 14-day filters. In …
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Advancing Language Equity and Sample Efficiency in Task-Oriented Dialogue Systems
… translation, enables systematic evaluation of cross-lingual and cross-domain transfer abilities. COD is collected via a new outline-based generation protocol aimed to mitigate translation-induced unnaturalness in language and content. The analyses and experiments on both highlight the disparity …
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Projecting acceptance into Millersville University's Department of Industry and Technology using high school rank, social capital, SAT scores, sex, age, and race
… divided into two groups for the purpose of cross-validation. Multiple regression was used for both the overall group and the two subgroups to create equations which predicted sophomore GPA, using the following independent variables: SAT scores, high school rank, age, sex, race and human …
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Adventures in polyene chemistry
… These new approaches involve sequences of cross-coupling reactions. Explorations into the chemical reactivity of these compounds have also been carried out. Chapter 1 is a review of the literature of multi C(sp2)-C(sp2) bond couplings involving alkene reaction partners. Chapter 2 explores …
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Adventures in polyene chemistry
… These new approaches involve sequences of cross-coupling reactions. Explorations into the chemical reactivity of these compounds have also been carried out. Chapter 1 is a review of the literature of multi C(sp2)-C(sp2) bond couplings involving alkene reaction partners. Chapter 2 explores …
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Introgression of desirable traits from temperate maize Zea mays L.)into tropical maize for low phosphorus soils
… soils in Zambia. Twenty-four (24) single-cross hybrids and 9 local checks were evaluated in a 3 x11 α-lattice design with 2 replications at Mutanda station under low P soil condition. Highly significant differences (P ≤ 0.01) among genotypes were found for grain yield (GY), harvest index …
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Introgression of desirable traits from temperate maize Zea mays L.)into tropical maize for low phosphorus soils
… soils in Zambia. Twenty-four (24) single-cross hybrids and 9 local checks were evaluated in a 3 x11 α-lattice design with 2 replications at Mutanda station under low P soil condition. Highly significant differences (P ≤ 0.01) among genotypes were found for grain yield (GY), harvest index …
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Characterizing the effect of mutation recombination and reassortment on the genetic diversity of African horse sickness virus genomes
… South Africa. The AHSV genome comprises of ten double stranded RNA segments and is replicated by an RNA-dependent-RNA polymerase which lacks proof-reading abilities and is therefore prone to mutations. The virus could potentially undergo genetic recombination and reassortment during the …
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