Index Catalog // ScholarsArchive@OSU

Electroluminescent and photoluminescent phosphor development and a facile approach to synthesis of refractory silicates at low temperatures

Creator:: Clark, Benjamin L.
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Benjamin L. Clark for the degree of Doctor of Philosophy in Chemistry presented on May 3

Gene Activation Strategies in Filamentous Fungi for Natural Products Discovery

Creator:: Adpressa, Donovon A.
Abstract:: Fungi have long been a prolific source of clinically approved drugs. The antibiotic penicillin, the cholesterol lowering statins, and the immunosuppressant cyclosporine have changed the treatment of human diseases in the last century. Recently, genome analysis of filamentous fungi has revealed that the biosynthetic potential for natural product expression is...
Resource Type:: Dissertation

Total Synthesis of Cephalotaxus Alkaloids and Synthetic Studies toward Bazzanin K

Creator:: Ju, Xuan
Abstract:: Dearomatization reactions exist broadly in biosynthesis and chemical synthesis. The highly functionalized atoms of arenes can be masked by it aromaticity, and upon dearomatization, those reactive atoms can be readily applied to bond formation and further manipulation. The total synthesis of (–)-cephalotaxine and (–)- homoharringtonine is described via an oxidative...
Resource Type:: Dissertation

Drug Discovery from Diverse Bacteria – Bioactivity-guided Isolation of Known and New Metabolites

Creator:: Zhu, Chenxi
Abstract:: Exploring bioactive natural products has contributed largely to clinically approved drugs we have been using over the last 100 years. Especially among the anti-infective drugs, around 70% of currently used antibiotics were discovered or derived from microbial secondary metabolites, among them compounds like vancomycin, chloramphenicol, and erythromycin. Facing the unavoidable...
Resource Type:: Dissertation

Designing Dielectric Materials through Complex Metal Oxides

Creator:: Nikkel, Jason W.
Abstract:: This dissertation demonstrated that the electrical properties of complex oxide-based perovskite materials could be controlled through the careful modification of both material composition and structure. This was first shown through the modification of lead zirconate titanate (Pb(Zr0.52Ti0.48)O3, PZT) solid solutions with bismuth indate (BiInO3, BI) where the relative stability of...
Resource Type:: Dissertation
Full Text:: David P. Cann This dissertation demonstrated that the electrical properties of complex oxide

Design of a digital repetitive titrator

Creator:: Wendlick, Joseph David
Abstract:: An automatic digital titrator for use in potentiometric titrations is described. The automatic titrator described provides a permanent digital and analog record of all titrations. The modular units which combine to form the automatic titrator are described individually. Accuracy achieved by the titrator on successive acid-base titrations of ammonia in...
Resource Type:: Masters Thesis
Full Text:: THE THESIS OF Joseph David Wendlick for the Master of Science in Chemistry (Name) (Degree) (Major

Conformation and reactivity studies of some bicyclo(3.3.1) nonane derivatives

Creator:: Sturmer, David Michael
Abstract:: New syntheses for 2-bicyclo(3.3.1)nonanone and 7-bicyclo-(3.3.1)nonen-2-one were developed. The saturated ketone was prepared from phenol and acrylonitrile via a novel intramolecular S[subscript N]2 cyclization process. A Friedel-Crafts cyclization of 3-(3-cyclohexenyl)propanoyl chloride permitted synthesis of the unsaturated ketone from 4-cyclohexene carboxaldehyde. The formation of the bicyclo(3.3.1)nonane rather than a bicyclo(3.2.2)nonane skeleton...
Resource Type:: Dissertation
Full Text:: )Nonane Derivatives AN ABSTRACT OF THE THESIS OF DAVID MICHAEL STURMER for the Ph. D. in Chemistry

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
Full Text:: advisor, Dr. David Horne, for his encouragement as well as many hours of attention and guidance he has

Expediting the Generation and Analysis of Amorphous Oxide Computational Models: Modeling Complex Systems Swiftly

Creator:: Buchanan, Jacob C.
Abstract:: In this dissertation, the process of computational modeling of amorphous oxide materials is studied. Amorphous oxides have random atomic arrangements with no long-range structural order which makes it difficult to study structure-property relationships. Despite the difficulties, amorphous oxides have great uses as semiconductors and dielectrics in thin-film transistors. The ability...
Resource Type:: Dissertation
Full Text:: , Professor Douglas Keszler, Professor May Nyman, Professor David Cann, and Associate Professor Davide

Aqueous niobium chemistry at low pH : new precursors for oxide thin films

Creator:: Park, Deok-Hie
Abstract:: Phosphate and peroxide stabilize new oxo-hydroxo niobium clusters in water at low pH. The clusters open a new chapter in aqueous niobium chemistry under acidic conditions. The clusters also produce atomically smooth, amorphous niobium oxide phosphate (NbPOx) thin films. Reaction pathways from cluster solutions to amorphous niobium oxide phosphate solids...
Resource Type:: Dissertation
Full Text:: Nyman, Mas Subramanian, David Cann, and Brady Gibbons. Their lectures during the coursework and

Structure-property Relationships of Transition Metal Oxides Containing Precious Metals

Creator:: Hapuraja Pathirannehelage, Vidhara H. P.
Abstract:: This dissertation presents a study of structure-property relationships within 3d/4d metal oxides containing precious metals through detailed structure refinements using high-resolution neutron and X-ray diffraction data along with exploration of the resultant properties. Oxides of 4d or 5d transition metals tend to show new topological phases due to significant spin-orbit...
Resource Type:: Dissertation
Full Text:: opportunity to thank my close research mates Grace Lin, Ashjan Alharbi, and Benjamin Clark, for their

New Inorganic Pigments from Mineral Structures

Creator:: Schettini Mejia, Carlo A.
Abstract:: The discovery of new blue pigments is a field of great interest, as commercially available pigments present properties that make them undesirable such as poor sustainability, cost, and stability. By researching solid solutions with the melilite structure, we discovered a new solid solution Sr2Zn1-xNixGe2O7, with 0.1 ≤ x ≤ 0.6,...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ David Ji, Committee Member, representing Chemistry

Carbon dioxide fixation and biosynthesis of amino acids in yeast (Saccharomyces cerevisiae)

Creator:: Davis, James Wendell
Resource Type:: Dissertation
Full Text:: coli, II. Journal of biological Eemistry 198:173-178. 1952. 5. Alexander, Benjamin, Greta Landwehr

Wide band gap semiconductors and insulators : synthesis, processing and characterization

Creator:: Hersh, Peter A.
Abstract:: The work presented here is focused on applying basic principles of solid-state chemistry to the study and development of new wide band-gap semiconductors and insulators for photovoltaic and electronic-device applications. Analysis of crystal structure, band structure, optical band gap, morphology and transport properties provides fundamental insight into materials performance as...
Resource Type:: Dissertation
Full Text:: refinement, John Donovan with electron probe microanalysis, Kurt Langworty with SEM, Benjamin Schmid with

Studies on the mechanism of formation of n-phenylpyridinium salts from 1,7-diaza-1,3,5-heptatrienes

Creator:: Shahidi, Iraj Khatib
Resource Type:: Dissertation

Synthesis and study of oxides and chalcogenides : thin films and crystals

Creator:: Park, Sangmoon
Abstract:: Several types of solid-state inorganic materials are prepared and characterized. By using the SILAR (Successive Ionic Layer Adsorption and Reaction) deposition method in conjunction with hydrothermal dehydration both low-temperature deposition and crystallization of oxide thin films are achieved. Various aspects of new transparent p-type materials are studied by examining both...
Resource Type:: Dissertation
Full Text:: Yanagi, Matthew F. Price. I also thank Dr. Gregory S. Herman, Dr. David M. Schut, Dr. Alex Yokochi and

Lattice effects of lithium hydroxide : isotopic effects and factor group analysis

Creator:: Lilley, Suetta Albin
Abstract:: The infrared absorption spectrum from 3200 cm⁻¹ to 4025 cm⁻¹ of thin crystals of ⁶LiOH (99%⁶Li.) is presented and compared to the spectrum of [superscript]NLiOH (93%⁷Li). A shift in only one of the band pairs supports the lattice combinations model and assists in making assignments for the major features of...
Resource Type:: Masters Thesis
Full Text:: and Phonon Interactions. New York, Benjamin, 1964. 640 p. 2. Brewer, Leo and John Margrave. The vapor

Characterization of naturally occurring beta-methylcholine phosphatide and related studies

Creator:: Bieber, Loran Lamoine
Resource Type:: Dissertation

New luminescent materials and high-performance solution-processed oxide thin films

Creator:: Jiang, Kai
Abstract:: Crystals of an incongruent-melting compound, Ba₃MgSi₂O₈, were grown by the flux method and its structure was determined by single crystal X-ray diffraction methods. Ba₃MgSi₂O₈ crystallizes in trigonal space group P-3[bar]m1 with a = 5.6123(3) Å, c = 7.2667(9) Å and Z = 1. Eu²⁺ ions prefer one crystallographic Ba site...
Resource Type:: Dissertation
Full Text:: ., John Wagers Group in EECS, Janet Tate Group in Physics, David Johnson Group in Chemistry and

Synthesis and characterization of polymer electrolytes and related nanocomposites

Creator:: Sloop, Steven E.
Resource Type:: Dissertation
Full Text:: VCH: New York, 1991; ch 1. 5. Laid ler, K. J.; Mieser, J. H. Physical Chemist?), Benjamin/Cummings

Some features influencing the valence isomerism of cis-dienones to α-pyrans

Creator:: Gosink, Thomas A. (Thomas Anthony)
Resource Type:: Dissertation

The synthesis of nonactic acid

Creator:: Arco, Manuel Jose
Abstract:: Alkylation of propylene oxide with 2-lithiofuran gave alcohol I, which was smoothly converted to acetylfuran II. hydrogenation of II over rhodium on charcoal followed by Jones' oxidation afforded ketone III. Further transformation into IV was accomplished via a Wittig reaction followed by saponification with methanolic sodium hydroxide. Hydroboration of the...
Resource Type:: Dissertation
Full Text:: not least, my deepest gratitude to Judy and David for their moral support, patience, and inspiration

Employing capillary electrophoresis as a separation method for pharmaceutical analysis

Creator:: Lessard, Laura L.
Abstract:: Capillary electrophoresis as a technique has many applications in a broad range of fields including forensics, environmental analysis, and biological analysis and as a separation method for samples such as oligonucleotides, peptides, proteins, and pharmaceuticals. The research conducted herein is for the antibiotic pharmaceutical ciprofloxacin HCl and three impurities. Sample...
Resource Type:: Masters Thesis
Full Text:: is dedicated to Keitha, David, Benjamin, Peggy and Daniel. I couldn't have done this without you

Evidence for a soluble high energy intermediate of oxidative phosphorylation in mitochondria from blowflies

Creator:: Sun, Albert Yung-Kwang
Resource Type:: Dissertation

Some biochemical studies of phenylmercuric acetate and mercuric acetate toxicity in rats

Creator:: Ellis, Robert William
Abstract:: Biochemical studies of phenylmercuric acetate (PMA) and mercuric acetate toxicity in rats carried out during this investigation were (1) the metabolism of ²⁰³Hg(Ac)₂ and ²⁰³Hg-PMA within kidney and liver tissues following oral ingestion, (2) the effect on some soluble enzyme activities and determinations of ²⁰³Hg binding in the enzyme fractions,...
Resource Type:: Dissertation

The synthesis and chemistry of strained bicyclic systems

Creator:: Scerbo, Louis
Abstract:: A facile route to bicyclo(2.1.1)hexanes was developed involving the intramolecular photocyclization of 1, 5-hexadien-3-one to bicyclo(2.1.1)hexan-2-one. A study of the chemistry of bicyclo-(2.1.1)hexan-2-one was undertaken. Deuterium exchange and borohydride reduction demonstrated the strain present in the ketone. Further evidence was obtained from the failure to introduce substituents alpha to the...
Resource Type:: Dissertation

Biosynthesis of aminodicarboxylic acids in Acetobacter suboxydans

Creator:: Maragoudakis, Michael Emmanuel
Resource Type:: Dissertation

Purification and characterization of a cytoplasmic apyrase plumules of Pisum sativum

Creator:: Nishikawa, Alfred Hirotoshi
Abstract:: The 105,000 x g supernatant fluid (S[subscript HS]) from extracts of pea seedlings (Pisum sativum, var. Alaska) etiolated for 60 hours yielded a very potent adenosine triphosphatase activity. This activity was designated as an apyrase when the reaction stoichiometry indicated that adenosine triphosphate (ATP) was hydrolyzed to adenosine monophosphate (AMP)...
Resource Type:: Dissertation

Low temperature thermal analysis of some boron halide complexes with weak Lewis bases

Creator:: Lerch, Ronald Edwin
Abstract:: Thermal analysis was used to investigate the following seven systems: H₂S-B₂F₄, SOF₂-B₂F₄, COC1₂-B₂F₄, SF₄-B₂F₄, Xe-BF₃, NF₃-BF₃, and NF₃-BC1₃. In two of the seven systems compound formation was observed. In the system, H₂S-B₂F₄ the compounds H₂S[superscript .]B₂F₄ and 2H₂S[superscript .]B₂F₄ are formed. The compound H₂S[superscript .]B₂F₄ has a melting point of...
Resource Type:: Dissertation

Kinetic studies of some reactions of sulfinate and sulfonate esters

Creator:: Walters, Charlene Ann
Resource Type:: Dissertation

Effects of washing and aging on the metabolism of red beet root slices

Creator:: Kolattukudy, Pappachan Ettoop
Abstract:: The rate of the C¹⁴0₂ release from glucose, specifically labeled with C¹⁴ at 1, 2, 3+4, and positions, was used to study the relative participation of pathways of glucose catabolism in red beet slices. Evidence was obtained which indicated that in mature red beets glucose was catabolized mainly via glycolysis-tricarboxylic...
Resource Type:: Dissertation

Ultrasonic dispersion in gaseous allene, ammonia and carbon suboxide observed by optical diffraction

Creator:: Hancock, James Kent
Resource Type:: Dissertation

Large-D limit for correlation methods in atoms

Creator:: Summerfield, John H.
Resource Type:: Dissertation

Certain aspects of electron and coupled energy transfer in cardiac muscle

Creator:: Kettman, John Rutherford
Abstract:: The first area of investigation involves the electron transport of sub-mitochondrial particles and their components. The second area is the synthesis of ATP and other energy linked reactions and components of the energy conservation and transfer apparatus. Investigations on the nature of the tetramethyl-p-phenylenediamine (TMPD) shunt indicated that tetrachlorohydroquinone (TCHQ)...
Resource Type:: Dissertation

Investigation of the structural influence on the properties of functional inorganic oxides

Creator:: Laurita-Plankis, Geneva
Abstract:: While properties are extremely important from an application point of view, it is crucial to have a detailed understanding of the underlying structural influence. Once a concrete correlation between the structure and the observed property is established, rational design of novel materials with optimized properties can be realized. These optimized...
Resource Type:: Dissertation
Full Text:: Decker, Dr. Romain Berthelot, Dr. Jun Li, Dr. Rosa Grajczyk, and Dr. Benjamin Hanken. I would

The study of the influence of the nitro substituent on the hydrazinolysis of certain substituted 5-nitropyrimidines

Creator:: Stahl, Quade Russell
Abstract:: The unique reaction between 4, 6-dimethoxy-5-nitropyrimidine and methylhydrazine was investigated. The reaction product was identified as 4-hydrazino-6-hydroxypyrimidine from (a) spectral data, (b) by direct synthesis of the product via 4-chloro-6-hydroxypyrimidine and hydrazine, and (c) by conversion of the product to the known 4-amino-6-hydroxypyrimidine using Raney nickel. The product was not...
Resource Type:: Dissertation

Absolute stereochemistry and total synthesis of botryococcene

Creator:: Reddy, Guvvala Nagabhushana
Abstract:: Studies were carried out to determine the absolute stereochemistry of botryococcene (1). The natural product was degraded to two sets of 'y- and 8- valerolactones. All enantiomeric variations of these lactones were synthesized in optically pure form starting from (S)- and (R)-methyloxiranes. 1H NMR correlation of natural and synthetic materials...
Resource Type:: Dissertation

Rationalization and innovative design of asymmetric organocatalysts through computational investigation

Creator:: Johnston, Ryne Connell
Abstract:: My work on computing complex catalyzed organic transformations reveals that only a few subtle chemical factors, e.g. non-classical hydrogen bonding, (hyper)conjugation and steric effects, common across different catalyst manifolds are critical for catalysis and selectivity. Rational manipulation and exploitation of these factors has led to improved catalyst designs, which has...
Resource Type:: Dissertation

Synthesis and study of transparent p- and n-type semiconductors and luminescent materials

Creator:: Park, Cheol-Hee
Abstract:: New transparent p- and n-type semiconductors and luminescent materials have been prepared and characterized. Synthesis, structures, optical and electrical properties of new chalcogenide fluoride p-type transparent semiconductors MCuQF (M=Ba, Sr; Q=S, Se, Te) are described. Band-gap tuning and improvement in conductivity through p-type doping are demonstrated in the family. The...
Resource Type:: Dissertation
Full Text:: , Benjamin C. Nielsen, Price F. Matthew, James Osborn, Dr. Jeffrey P. Bender, Melinda M. Valencia, Hai

Poly- and perfluorinated alkyl substance release from landfills and landfill model reactors

Creator:: Allred, Brent McKay
Abstract:: Research and public concern of poly and perfluoroalkyl substances (PFASs) as environmental contaminants has increased significantly due to the increasing number of reports of their detection in humans and wildlife. PFASs have a number of commercial applications including surfactants, coatings, polymers, and levelers, which are used on consumer products like...
Resource Type:: Dissertation
Full Text:: construction and execution: Dr. Alex Brewer, Dr. Benjamin Place, Dr. William Backe, Matthew Perkins, Krista

A kinetic investigation of the mechanism and intermediates of the chromium(VI)-Iodide reaction

Creator:: Gaswick, Dennis Charles
Resource Type:: Dissertation

Studies on advanced intermediates in the biosynthesis of streptonigrin

Creator:: Erickson, W. Randal
Abstract:: Early studies on the biosynthesis of the quinoline quinone portion of streptonigrin, 1, had suggested the intermediacy of novel aromatic amino acids. In order to test this hypothesis, a series of compounds was synthesized and tested for potential incorporation. [4-¹⁵N] 4-Aminoanthranilic acid, 4 5 a , [4-² H] 7-aminoquinaldinic acid,...
Resource Type:: Dissertation

Structural and synthetic studies of higher terpenoids : Part I. The absolute configuration of (-)-botryococcene : Part II. Total synthesis of (±)-2-desoxystemodinone

Creator:: Somers, Todd Charles
Resource Type:: Dissertation

Mass spectrometric analysis of UV-crosslinked protein-nucleic acid complexes

Creator:: Doneanu, Catalin E.
Abstract:: The DNA-binding domains of E. coli uracil-DNA glycosylase (Ung) and human replication protein A (hRPA) were studied using a general protocol developed in our laboratory for probing protein-DNA interactions. The procedure involves purification and mass spectrometric analysis of the nucleopeptide-products of a tryptically digested UV-crosslinked protein-nucleic acid complex. In the...
Resource Type:: Dissertation

High quantum-yield phosphors via quantum splitting and upconversion

Creator:: Jeong, Joayoung
Abstract:: The Gd3+ ion has been used to induce quantum splitting in luminescent materials by using cross-relaxation energy transfer (CRET). In Nd:LiGdF4, quantum splitting results from a two-step CRET between Gd3+ and Nd3+, first involving a transition 6G→6I on Gd3+ and an excitation within the 4f3 configuration of Nd3+ followed by...
Resource Type:: Dissertation
Full Text:: . Liping Guo, Robert Kykyneshi, Benjamin C. Nielsen, Paul Newhouse, Dr. Hai Chiang, David Hong, Doo

Per- and Polyfluoroalkyl Substances (PFAS) in Environmental Air-Water Matrices and Light Non-Aqueous Phase Liquids (LNAPL)

Creator:: Schwichtenberg, Trever J.
Abstract:: The presence of per- and polyfluoroalkyl substances (PFAS), organic contaminants first synthesized in the 1940s, has been reported worldwide in a variety of environmental matrices and ultimately in biological systems including humans. Ongoing research into PFAS has included identifying novel PFAS, assessing their fate and transport in the environment, and...
Resource Type:: Dissertation

Comprehensive Analysis of The Brain Metabolome Using Mass Spectrometry in Conjunction with Data Analysis Techniques

Creator:: Khorani, Mona
Abstract:: Metabolomics has recently gained momentum in biomolecule research and complements the genomics and proteomics research space. Metabolomics strives to detect, identify, and quantify all metabolites present in biological samples. In particular, biomolecular analysis using ultra-performance liquid chromatography combined with mass spectrometry (UPLC-MS) has become increasingly important for metabolomic analyses. Similarly,...
Resource Type:: Dissertation
Full Text:: . Yuan Jiang, Dr. Neal Sleszynski, and Prof. Benjamin Philmus. Their invaluable feedback, motivation

Computational Investigations of Transition Metal Catalyses and Amorphous Metal Oxides : Accelerating Scientific Discovery Through Automation

Creator:: Mustard, Thomas J. L.
Abstract:: Automation of computational chemistry, while only an engineering feat, has the potential to accelerating computational research be removing all by the science. The work in this thesis mainly discusses fundamental understanding of complex chemical systems. What is not obvious are the numerous tasks necessary for this fundamental understanding. Under the...
Resource Type:: Dissertation
Full Text:: . Fast, and Prof. Michelle R. Dolgos conducted the experimental PDF study for this project. Benjamin E

Computational Investigation into the Mechanisms and Origins of Selectivity in Selected Organic and Organometallic Chemical Processes

Creator:: Harper, Jordan L.
Abstract:: Put generally, the work I have conducted in my time at Oregon State University has been to answer two questions. The first of these is “Why do I get this particular product from this particular chemical reaction?” and the second is “How do the reagents in this chemical reaction lead...
Resource Type:: Dissertation

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