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  • Studies toward the synthesis of halichlorine and pinnaic acid

    Creator:
    Korf, Eric A.
    Abstract:
    Three approaches toward the core of halichlorine and pinnaic acid are described. The first approach entails a racemic transannular nitrone-olefin [3+2] cycloaddition from nitrone 238. Construction of the nitrone 238 began with aldehyde 241. Another key feature in this route involved a ring-closing metathesis for the formation of a 14-membered...
    Resource Type:
    Dissertation
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    ……..………..………..………..………..………..…...5 1.4. Synthetic studies……..………..………..………..………..………..………..…...6 1.4.1. Danishefsky’s total

  • Studies toward the total synthesis of alkaloids : nagelamide A and D, agelastatin D, dragmacidin A-C, salacin and almazoles

    Creator:
    Tonsiengsom, Sorasaree
    Abstract:
    Studies toward the total syntheses of highly potent cytotoxic alkaloids including the bromopyrrole alkaloids and indole alkaloids were conducted and are described. Studies carried out in the course of this dissertation consist of five total syntheses of natural products that include bromopyrrole alkaloids nagelamide A, D and agelastatin D as...
    Resource Type:
    Dissertation
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    homologue of 1.7 and lacks an N-methyl group. There is no report of any biological 23 activity for

  • Polarization spectroscopy and photodissociation studies of nitroaromatic compounds in the gas phase

    Creator:
    Abbott, James E.
    Abstract:
    The central purpose of this dissertation was to explore and expand the use of an uniform electric field for orientation and for subsequent spectroscopic investigation of asymmetric polar molecules in the gas phase. The systems of study were nitrobenzene (NB) and the nitrotoluene (NT) isomers. We were able to quantitatively...
    Resource Type:
    Dissertation
    Full Text:
    dissociation process by analyzing the internal energy distribution of the Nitric Oxide (NO) photofragment

  • Tracking semi-volatile organic pollutants in remote lake systems

    Creator:
    Usenko, Sascha
    Abstract:
    SOCs volatility and persistence properties cause many SOCs to become ubiquitous in the environment as well as accumulate in areas with lower temperatures such as polar or orographic regions. Many anthropogenic SOCs pose a serious risk to human and ecosystem health because of their persistent, bioaccumulative, and toxic properties in...
    Resource Type:
    Dissertation
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    understanding of the fate and transport of many SOCs have been made with research in polar or orographic

  • Analysis of semi-volatile organic contaminants and their accumulation in remote aquatic ecosystems of the western US

    Creator:
    Ackerman, Luke K.
    Abstract:
    Many pesticides, polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and polycyclic aromatic hydrocarbons are persistent, bio-accumulative, and toxic. These semi-volatile organic compounds (SOCs) can undergo atmospheric transport and deposition in cold, remote ecosystems. A better understanding of their accumulation in the fish of these ecosystems is important to better predict...
    Resource Type:
    Dissertation
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    ……………………………………………............. 4 1.4 References………...……………………………………………............. 5 2. Quantitative Analysis of 39

  • Biological oxidation of sorbitol

    Creator:
    Cummins, Joseph Thomas
    Abstract:
    The oxidation of sorbitol by soluble extracts of A. suboxydans proceeds by two pathways depending upon which pyridine nucleotide is present. In the presence of TPN, sorbose is formed. In the presence of DPN fructose is produced. Both products of the oxidation of sorbitol have been identified by paper chromatography,...
    Resource Type:
    Dissertation
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    3 21 Figure 4 24 Figure 5 28 Figure 6 35 Figure 7 !14 Figure 8 45 LIST OF TABLES

  • Development, validation and the application of a congener specific photodegradation model for PBDEs

    Creator:
    Zeng, Xia
    Abstract:
    The thermodynamic properties of 39 PBDEs have been calculated using Gaussian 03 on the B3LYP/6-31G(d)//B3LYP/6-31G(d) level. The PBDE congeners' enthalpies of formation increase with increasing number of bromines and show a strong dependence on the bromine substitution pattern. The effects of bromine substitution pattern have been quantitatively studied by GAM...
    Resource Type:
    Dissertation
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    REFERENCE………………………………………………………………..... 94 CHAPTER 5. CONCLUSIONS…………………………………………………….. 107 REFERENCE

  • Solution deposition and characterization of the thin film inorganic materials

    Creator:
    Özmen, Bahar
    Abstract:
    The general emphasis of this work has been synthesis, characterization, and applications of n- and p-type inorganic oxide thin films that are deposited from solutions. In particular, a study of n-type transparent semiconductor films of tin (IV) oxide and zinc-doped tin (IV) oxide has been performed by spin coating. Solution...
    Resource Type:
    Masters Thesis
    Full Text:
    semiconducting thin films using new TCO semiconductors, however there is no report on the preparation of a p

  • Trans-Pacific and regional atmospheric transport of anthropogenic semivolatile organic compounds in the western U.S.

    Creator:
    Primbs, Toby
    Abstract:
    The atmospheric transport of anthropogenic semivolatile organic compounds (SOCs) from Asian sources to the Western U.S. was investigated. In addition, the SOC extraction method was optimized. Hansen solubility parameter plots were used to aid in the pressurized liquid extraction (PLE) solvent selection of air sampling media in order to minimize...
    Resource Type:
    Dissertation
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    installation (Chapters 4 and 5), in addition to sample collection (Chapter 3). Glenn Wilson provided guidance

  • Studying fusion reactions for effect of PCN on heavy nucleus formation and for nuclear structure effects

    Creator:
    Naik, Radhika
    Abstract:
    The fusion reaction ²⁰⁸Pb (⁵⁰Ti, xn) ²⁵⁸⁻x Rf (x = 1-3) was studied to determine PCN (probability that the mononucleus system evolves to form a compound nucleus inside the fission saddle point) and to establish the value of Wsur (survival probability) for the given reaction experimentally. The fission excitation function...
    Resource Type:
    Dissertation
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    Fellowship, the Benedict Award, the Director of Office of Energy Research, Division of Nuclear Physics of