Index Catalog // ScholarsArchive@OSU

The chemistry of selected carbene and radical ion intermediates

Creator:: Pugh, James K.
Resource Type:: Dissertation
Full Text:: Intermediates AN ABSTRACT OF THE THESIS OF James K. Pugh for the degree of Doctor of Philosophy in Chemistry

Gas-phase fragmentation chemistry of protonated peptide ions

Creator:: Bythell, Benjamin James
Abstract:: The fragmentation characteristics of protonated peptides have been investigated using tandem mass spectrometry (MS/MS) under various fragmentation regimes and detailed density functional theory (DFT) reaction pathway calculations. The DFT calculations predict novel salt-bridge stabilized transition structures as well as consecutive reactions occurring in proton-bound dimers for some of the ions...
Resource Type:: Dissertation
Full Text:: 2 AN ABSTRACT OF THE DISSERTATION OF Benjamin James Bythell for the degree of Doctor of

Synthesis of furanoeremophilane sesquiterpenoids

Creator:: Shanmugham, Meenakshi Sundaram
Abstract:: Two approaches to the tricyclic core of the furanoeremophilane sesquiterpenoids are described. The first approach entails a projected Diels-Alder/retro Diels-Alder reaction of an acetylenic oxazole 64. Construction of the pivotal aldehyde 67 commenced from ketone 68. The acetyenic moiety was then introduced via a Felkin-Ahn addition of lithiopropyne to aldehyde...
Resource Type:: Dissertation
Full Text:: FURANOEREMOPHILANE SESQUITERPENOIDS Abstract approved: James D. White Two approaches to the tricyclic core of the

Simple models for the structure and dynamics of polyatomic fluids

Creator:: James, Corinne Patricia
Abstract:: Three areas of liquid state theory are considered. First, Monte Carlo computer simulation of a two-dimensional hard disk fluid with an imbedded ellipse was undertaken to determine how a non-spherical molecule affects intermolecular ordering. The elliptical molecule (with axial ratios of 2, 5 and 10) altered the isotropic distribution of...
Resource Type:: Dissertation
Full Text:: Fluids AN ABSTRACT OF THE THESIS OF Corinne Patricia James for the degree of Doctor of Philosophy in

Development of automated on-line ion exchange systems for the determination of chemical speciation of trace metals in natural waters

Creator:: Liu, Yan
Abstract:: An automated on-line ion exchange trace enrichment system has been developed to improve the detection limits of flame atomic absorption (AA) spectrophotometry in the determination of trace metals in natural waters. The sample solution is passed through a column of Chelex-100 chelating resin by a carrier buffer stream delivered from...
Resource Type:: Dissertation
Full Text:: Speciation of Trace Metals in Natural Waters Abstract approved : Redacted for privacy James D. Ingle, Jr

Development of methodology and instrumentation for determination of chloroform in water

Creator:: Yang, Ying, 1969-
Resource Type:: Dissertation
Full Text:: the Determination of Chloroform in Water Abstract approved: James D. Ingle, Jr. Spectrophotometric

Total synthesis of (+)-bourgeanic acid and conformational analysis of its dilactone

Creator:: Johnson, Alan T. (Alan Thomas), 1957-
Resource Type:: Dissertation
Full Text:: Conformational Analysis of its Dilactone Abstract approved: _Redacted for Privacyj James u. wnite The total

Quantitative determination of emerging contaminants, solvent stabilizers and fullerene nanomaterials, in biological and environmental systems

Creator:: Isaacson, Carl W.
Abstract:: To determine the impact of emerging environmental contaminants on human and environmental health, quantitative analytical methods are required. Analysis of emerging contaminants is hampered by their widely varying physical-chemical properties. Therefore quantitative analytical methods must be developed to determine the behavior of emerging contaminants in environmental systems. A quantitative analytical...
Resource Type:: Dissertation
Full Text:: committee members (Douglas Barofsky, James Ingle, and Mark Dolan) for their investment of time and support

The cyclization reactions of certain 5-amino-4-chloro-6-hydrazinopyrimidines with phosgene

Creator:: Krackov, Mark Harry
Resource Type:: Dissertation
Full Text:: material was recently described by Montgomery and Temple (45), who obtained yields of only 40 percent by

Per- and Polyfluoroalkyl Substances (PFASs): Consumer Products, Protocols, and Percutaneous Absorption

Creator:: Rewerts, Justin N.
Abstract:: Per- and polyfluoroalkyl substances (PFAS) are a group of anthropogenic compounds gaining notoriety as contaminants of emerging concern. With the frequent detection of PFAS in the environment, drinking water, and consumer products, awareness and concern from the public regarding PFAS is increasing. The two most notorious PFAS are perfluorooctanoate (PFOA)...
Resource Type:: Dissertation

Mechanistic studies of polyhalogenated benzenes

Creator:: Herbelin, Sharon Maley
Abstract:: Polyhalogenated benzenes have been analyzed by standard electron capture chemical ionization mass spectrometry (ECCI/MS), and electron monochromator mass spectrometer (EM/MS) systems. The EM/MS experiments distinguished electronegative compounds (especially isomers) by transient negative ions (TNIs) of the same mass but differing energies and/or the formation of distinct TNIs of different masses...
Resource Type:: Dissertation
Full Text:: discussions. I am thankful that Dr. Paul Mazurkiewicz and Dr. James A. Laramée ran my samples on the

Oxidation and phosphorylation by subcell particles from representative members of the plant kingdom

Creator:: Freebairn, Hugh Taylor
Resource Type:: Dissertation

Insights and Patterns from Quantitative and Statistical Analyses of Chemical Systems

Creator:: Grove, Markas Albert
Abstract:: The work presented here is the culmination of efforts in describing complex chemical systems with statistical methods, thereby providing relatively simple quantitative models and easily comprehensible qualitative insights. The following investigations have various goals, such as development of new methods, fundamental understanding, molecular control of chemical species, and advancement of...
Resource Type:: Dissertation

An investigation of the nucleophilic substitution of the chlorosubstituted pyrimidines

Creator:: Nazeeri, Makeen Ahsan
Resource Type:: Masters Thesis

Strategic Application of Computations to Diverse Chemical Systems

Creator:: Brueckner, Alexander C.
Abstract:: My work has focused on streamlining the study of organic compound structure, properties, and reactions by 1) understanding and using available computational software, 2) developing software packages to facilitate data manipulation as well as augment public programs, and 3) applying public and in-house developed software to further the understanding of...
Resource Type:: Dissertation
Full Text:: , Y.; Kitao, O.; Nakai, H.; Vreven, T.; Montgomery, O C H H H CCl3 O N OH N OMe O O CCl3 H

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

Femtosecond Stimulated Raman Studies of Excited State Structural Events

Creator:: Tang, Longteng
Abstract:: Femtosecond stimulated Raman spectroscopy (FSRS) is an ultrafast vibrational technique which allows rapid collection of Raman spectra with simultaneously high temporal and spectral resolution. With the recent development of FSRS methodology, three FSRS techniques (conventional, tunable, and anti-Stokes) have been implemented in our laboratory to dissect the excited state structural...
Resource Type:: Dissertation

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:: Dolgos, James Rustad, and Paul Cheong also assisted in preparation of this manuscript. Chapter 3

Application of Density Functional Theory to Exploration of Reactions

Creator:: Feoktistova, Taisiia
Abstract:: My work has focused on using density functional theory to elucidate mechanisms of organocatalytic and transition metal catalyzed reactions by considering competing mechanisms. In each of the three presented studies computational investigation complemented experimental work by predicting stereoselectivity or revealing origins of stereo, regio, or chemoselectivity. A study on the...
Resource Type:: Dissertation

Gene Expression, Structure Elucidation, and Bioactivity of Aspergillus Natural Products

Creator:: Neuhaus, George F.
Abstract:: The study of natural products (NPs) and their application has shaped humanity. Starting with the idea of using plants as medicine, it has now grown into the science of purifying and identifying organic molecules from nature to study their inherent biological activities. Understanding the molecular structures of NPs is the...
Resource Type:: Dissertation

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