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Filtering by: Creator Choi, Chang-Ho Remove constraint Creator: Choi, Chang-Ho Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.) File Format application/pdf Remove constraint File Format: application/pdf

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  • Development of solution-based reaction processes for micro- and nano-structured semiconductors

    Creator:
    Lee, Doo-Hyoung
    Abstract:
    The focus of this study is to develop a general and low-cost solution-based process to fabricate micro- and nano-structured semiconductors that are suitable for electronics. This process uses simple metal halide precursors dissolved in a solvent (organic or aqueous) and is capable of forming uniform and continuous thin films via...
    Resource Type:
    Dissertation
    Full Text:
    -Structured Semiconductors Abstract approved: Chih-Hung Chang The focus of this

  • Structure elucidation of bioactive natural products from Madagascar marine algae and cyanobacteria

    Creator:
    Andrianasolo, Eric Hajaniriana
    Abstract:
    This thesis is an investigation of the natural products deriving from marine algae and cyanobacteria and has resulted in the discovery of eleven new secondary metabolites. The structure elucidations of these new molecules were performed using a variety of spectroscopic techniques. Four new macrolides were isolated and characterized from the...
    Resource Type:
    Dissertation
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    O HO OH HO Ara-A (3) N O HO OH HO Ara-C (4) N O NH2 N O HO OH HO Spongouridine (1

  • Control of p53 tumor suppressor and peroxiredoxin activity through shifts incellular redox balance

    Creator:
    Stoner, Christopher S.
    Abstract:
    Aerobic organisms have evolved many sensory mechanisms that allow response to oxidants in the environment. One area of interest is the relationship between the activity of the tumor suppressor protein p53 and the redox state of thioredoxin. Human p53 activity is severely compromised in budding yeast lacking thioredoxin reductase. Evidence...
    Resource Type:
    Dissertation

  • The relationship between individualism vs. collectivism and the culturally intelligent behavior of counselor trainees

    Creator:
    James, Gene M.
    Abstract:
    Multicultural competency has been established as important component of communicating within a cross-cultural ecology. Yet, there is evidence that many counselors struggle to communicate and interact outside of their own cultural communication norms. Until this study, no one has attempted to integrate culture and intelligence as a unitary counseling construct....
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    Dissertation
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    individualists think in terms of the individual separate from the group (Kim, Triandis, Kâğitçibaşi, Choi

  • Some potential mechanisms for finely-tuned regulation of phospholipase C-β isozymes : studies of dimerization and phosphatidylinositol 3,4,5-trisphosphate activation

    Creator:
    Zhang, Yong
    Abstract:
    Phospholipase C-β (PLC-β) isozymes are key effectors in G protein-coupled signaling pathways. Prior research suggested that some isoforms of PLC-β may exist and function as dimers, but little is known about dimerization of PLC-β. Data from coimmunoprecipitation assays of differentially-tagged PLC-β constructs and sizeexclusion chromatography of native PLC-β support homodimerization...
    Resource Type:
    Dissertation
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    - current in Xenopus oocytes (Choi et al., 2001; Ma et al., 1993). Turkey PLC-β (PLC-βT), most similar to

  • Performance-improving techniques for wireless systems

    Creator:
    Ozdural, Orhan Can
    Abstract:
    In this thesis, maximum likelihood Doppler frequency estimation and phase noise suppression algorithms for Orthogonal Frequency Division Multiplexing (OFDM) systems are presented. A novel handover decision algorithm for wireless systems, called predictive base station switching (PBSS), is also introduced. The maximum Doppler Frequency is the ratio of the speed of...
    Resource Type:
    Dissertation
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    to my supervisors at Intel Corporation, Dr. Ali Sadri, Dr. Sasan H. Ardalan and Dr. Yang-Seok Choi

  • Total synthesis of phorboxazole A

    Creator:
    Lee, Tae Hee
    Abstract:
    The total synthesis of a highly potent cytotoxic marine natural product, phorboxazole A, is described. Both a palladium(II)-mediated and a palladium(II)-catalyzed intramolecular alkoxycarbonylation were used as key steps for the preparation of the two cis-2,6-disubstituted tetrahydropyran rings (C22-C26 and C11-C15) of phorboxazole A. The synthesis used a convergent approach involving...
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    Dissertation
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    synthesis of phorboxazole A. I would also like to thank Younggi Choi, Dr. Chang-Sun Lee, Dr. Jongtae Yang

  • Studies towards the total synthesis of (-)-kendomycin

    Creator:
    Smits, Helmars
    Abstract:
    Studies towards the total synthesis of (−)-kendomycin (1), a bacterial metabolite with a unique molecular architecture and pronounced biological activity, are described. These studies resulted in the synthesis of advanced intermediate 208, containing all of the carbon atoms of 1. A Dötz annulation between alkyne 122 and novel chromium carbenoid...
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    Dissertation
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    testing as well as for the synthesis of analogs. O O OH O HO HO 13 16 18 20 1 4 4a 57 9

  • Exploration of the feasibility of developing a winter hardy 'Marion' blackberry through genetic engineering

    Creator:
    Meng, Rengong
    Abstract:
    Experiments focusing on plant growth regulators’ concentrations and combination, mineral salt formulations and TDZ pretreatment formations were conducted to optimize in vitro shoot regeneration from leaf and petiole explants of 'Marion' blackberry. Optimum shoot formation was obtained when stock plants were incubated in TDZ pretreatment medium for three weeks before...
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    Dissertation
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    Michael Dossett), Chen Lab (Dr. Jeffrey Skinner, Steven Tygart, Dr. Yongjan Chang, Dr. Eung Jun Park

  • Low-power design techniques for low-voltage analog-to-digital converters

    Creator:
    Kim, Min Gyu
    Abstract:
    The demand for portable electronic systems and the continued down-scaling of device dimensions resulted in rapid improvement in the performance of integrated systems. Several low-voltage design techniques have been proposed to operate analog circuits with sub-1V supply. However, these techniques require higher power consumption to achieve large dynamic range while...
    Resource Type:
    Dissertation
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    , Korea, Hee-Cheol Choi at Sogang University, Korea, and Cheol-Hee Park at LG Chemistry, Korea for the