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  • Unidirectional error correcting/detecting codes

    Creator:
    Lin, Der Jei
    Abstract:
    An extensive theory of symmetric error control coding has been developed in the last few decades. The recently developed VLSI circuits, ROM, and RAM memories have given an impetus to the extension of error control coding to include asymmetric and unidirectional types of error control. The maximal numbers of unidirectional...
    Resource Type:
    Dissertation
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    -EC/AUED) code, which uses fewer checkbits than any of the previous methods, is developed. It is

  • New bioactive natural products from marine algae and cyanobacteria

    Creator:
    Sabry, Omar Mohamed
    Abstract:
    This thesis is an account of investigation on the natural products deriving from various marine algae and has resulted in the discovery of eleven novel bioactive metabolites. Isolation and characterization of these new molecules were carried out using different chromatographic techniques and by analyses of different spectroscopic data, respectively. Using...
    Resource Type:
    Dissertation
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    agent that is currently in phase Ill clinical trial is ecteinascidin 743 (11 ),22 isolated from the

  • Cultural controls for suppressing Phytophthora cinnamomi root rot of blueberry

    Creator:
    Yeo, John R.
    Abstract:
    Phytophthora cinnamomi is a soilborne pathogen that causes root rot disease of highbush blueberry (Vaccinium corymbosum L.). When new installations of susceptible blueberry cultivars are infected with P. cinnamomi, plants often fail to grow significant new tissue, greatly reducing yields over the life of the planting. Chemical fungicides are available...
    Resource Type:
    Dissertation
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    increase soil electrical conductivity (EC) beyond current recommended salinity guidelines for blueberries

  • Alternatives to the DNA precursor-synthesizing enzyme complex hypothesis

    Creator:
    Weitz, Stephen L.
    Abstract:
    Investigators have been studying an aggregate containing enzymes of deoxyribonucleoside triphosphate biosynthesis in T4-phage infected bacteria. They suggest that it behaves as an organized complex, efficiently channeling DNA precursors to the replication apparatus. Previous work has suggested that about 10 enzyme activities remain associated through several fractionation steps. This multi-enzyme...
    Resource Type:
    Dissertation
    Full Text:
    it and the cellular dCTP deaminase display moonier:se EC DNA polymoroso EC \ dCMP

  • Root symbionts and soil microorganisms associated with actinorrhizal plants

    Creator:
    Rose, Sharon Lee
    Abstract:
    Symbiotic associations are established between non-leguminous (actinorrhizal) nitrogen-fixing flowering plants and two categories of microorganisms: mycorrhizal fungi and a filamentous actinomycete. The actinomydete induces nodule formation and produces nitrogenase, the enzyme responsible for the reduction of atmospheric nitrogen to a form available to higher plants. The mycorrhizal fungus is found...
    Resource Type:
    Dissertation
    Full Text:
    vesicular-arbuscular mycorrhiza. VII. Growth and nodulation of some herbage legumes. New Phytol. 73:743-752

  • Three essays on constrained markets

    Creator:
    Siegel, Ryan
    Abstract:
    The three essays in this dissertation progressively answer the following questions: (a) How important are constraints? (b) Who benefits from removing constraints? (c) When does a constraint for a single market predominantly affect closely related markets? These questions are applied in the context of time, weather, and minimum wage constraints,...
    Resource Type:
    Dissertation
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    3 Region 4 Region 5 Region 7 Region 8 Avg. Subsample Size 237 774 462 627 1194 743 83 Time (LT

  • Effects of volatile fungicides on Sphaerotheca pannosa on rose

    Creator:
    Gallian, John J.
    Resource Type:
    Dissertation
    Full Text:
    The experimental fungicides nuarimol 9.46% EC (EL-228) [a-(2- chloropheny1)-a-(4-fluoropheny1)-5

  • Evaluation of bacterial community indicators of stream sanitary and ecological condition

    Creator:
    Bracken, Caragwen L.
    Abstract:
    The focus of this research was to develop bacterial community indicators of stream sanitary and ecological condition. The first study compared substrate utilization patterns between centrifuged and uncentrifuged split samples. We found a shift in the relative proportion of each group of bacteria following centrifugation, with a marked increased in...
    Resource Type:
    Dissertation
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    (FC), E. coli (EC), and the maximum Biolog Average Well Color Development (Max AWCD) and percent

  • Biologically active cyclic depsipeptides from marine cyanobacteria

    Creator:
    Medina, Rebecca A.
    Abstract:
    This thesis describes the chemical investigation of marine cyanobacteria collected in Madagascar and Panama with an emphasis on the isolation and structure elucidation of medicinally relevant secondary metabolites. A collection of the marine cyanobacterium Lyngbya majuscula from the Radames Islands, Madagascar yielded two new cyclic depsipeptides, radamamides A and B,...
    Resource Type:
    Dissertation
    Full Text:
    addition, ET-743 was granted orphan drug status from the European Commission (EC) and the U.S. Food and

  • Error control techniques for the Z-channel

    Creator:
    Oprisan, Paul
    Abstract:
    The asymmetric nature of bit errors in several practical applications provides grounds for efficient error control techniques. The Z-channel model and special classes of codes like asymmetric error detection codes and t-asymmetric error correcting/d-asymmetric error detecting codes can be successfully used in ARQ protocols for feedback error control enhancement. This...
    Resource Type:
    Dissertation
    Full Text:
    .................................... 47 4.3 The probability of undetected error of 2 t-EC/d-AED codes ........ 48 4.4 A 2-EC/8-AED code