Index Catalog // ScholarsArchive@OSU

Fluorescence studies on the bases of the nucleic acids in solution at room temperature

Creator:: Hauswirth, William Walter
Abstract:: Fluorescence of adenine, guanine, thymine, cytosine, and uracil has been detected at room temperature in neutral aqueous solution using a digital signal accumulation technique and right angle fluorescence detection from solutions with absorbances between 0. 4 and 0. 7. The quantum yields are respectively 2.6 x 10⁻⁴, 3.0 x 10⁻⁴,...
Resource Type:: Dissertation
Full Text:: School Date thesis is presented r)ctv-Iceic.) /6 /97O Typed by Barbara Eby for William Walter Hauswirth

A study of the photolysis of the aqueous thymine system at 214 nm, 229 nm and 254 nm

Creator:: Satcher, Robert Lee
Abstract:: The photolysis of the aqueous thymine system has been investigated at 214 nm, 229 nm and 254 nm at room temperature. Products of photolysis have been identified as hydrogen peroxide, 6-hydroxy-5- hydroperoxy thymine and tentatively 5-hydroxy-6-hydroperoxy thymine. These together with thymine loss, were determined quantitatively under a variety of conditions....
Resource Type:: Dissertation
Full Text:: Molecular Orbital Configurations 21 Part B. Photochemistry of Thymine 22 Thymine Dime r s 24 Nature of

Studies of time-resolved fluorescence spectroscopy and resolved absorption spectra of nucleic acid components

Creator:: Fu, Yingxian
Resource Type:: Dissertation
Full Text:: 0 O I 1"I U, R'=H R=H C, R H Urd, 'R' =H R= ribose Cyd, R= ribose UMP, H R= ribose phosphate

Hydroperoxide formation in the radiolysis of aqueous DNA and the pyrimidine bases

Creator:: Schwiebert, Maris Carol
Abstract:: The formation of cytosine hydroperoxide was detected in aqueous cytosine solutions irradiated with Co-60 γ-rays at pH 2. The nucleotide of cytosine, cytidylic acid, forms a hydroperoxide which was detected in neutral solution. The stability of the hydroperoxides of cytosine, thymine, and their nucleotides was found to be a function...
Resource Type:: Masters Thesis
Full Text:: atoms will lead to the production of molecular hydrogen. RH + H -» R- + H, A primary product is the

Structure and radiolysis of concentrated nitrate solutions

Creator:: Kiwi, John Tichauer
Resource Type:: Dissertation
Full Text:: solvent and Vin 3 would simply be Trr 3 N where r is the crystallo- graphic radius and N the number of

Reactions and stereochemistry of thiolato and sulfenato cobalt (III) complexes

Creator:: Herting, Daniel L.
Abstract:: This thesis describes a study of the synthesis, stereochemistry, and reactivity of cobalt(III) cysteinato (CyS) and related thiolato complexes. The preparation of [Co(en)₂CyS]⁺ resulted in a product solution containing a mixture of diastereomers in the ratio 2.3:1 (Δ:A). The isomers were separated by ion exchange chromatography, and their absolute configurations...
Resource Type:: Dissertation
Full Text:: cobalt (III) complexes AN ABSTRACT OF THE THESIS OF DANIEL L. HERTING for the degree of DOCTOR OF

A study of the free radical addition of thiophenol to substituted a-methylstyrenes and vinylarenes

Creator:: Church, Daniel Frank
Resource Type:: Dissertation
Full Text:: substituted a-methylstyrenes and vinylarenes AN ABSTRACT OF THE THESIS OF Daniel Frank Church for the

Porous metal-organic materials for gas capture

Creator:: Rookard, Tanner Daniel
Abstract:: Metal-organic polyhedra (MOPs) are discrete molecules comprised of a metal and interconnecting ligands. The resulting MOP structures are porous cages, and to date, they have shown great promise toward gas capture. Ammonia is a hazardous gas that is produced in enormous quantities for use in fertilizers. In this talk, I...
Resource Type:: Capstone Project
Full Text:: capture by Tanner Daniel Rookard A PROJECT submitted to Oregon State

Unlocking Water's Potential for Energy Storage: Abundant Materials for a Ubiquitous Problem

Creator:: Leonard, Daniel P.
Abstract:: Water is an absolute necessity for life as we know it. It provides a useful medium in which chemical reactions take place that allowed for the development of single cellular organisms. When combined with the evolutionary accident that was pho- tosynthesis, water became not only a useful medium chemical reactions,...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Daniel Philip Leonard for

A study of the mechanism of the abnormal claisen rearrangement

Creator:: Anderson, Daniel Richard
Resource Type:: Dissertation
Full Text:: by DANIEL RICHARD ANDERSON A THESIS submitted to OREGON STATE UNIVERSITY in partial

Computational Rationalizations of Mechanism and Stereocontrol in Small-Molecule Lewis Base Organocatalysis

Creator:: McCauley-Walden, Daniel W.
Abstract:: My work has focused on investigating synthetic organic reactions using applied computational methods. Non-covalent interactions are critical to catalysis, mechanism, and stereoselectivity, with the most prominent interaction for isothioureas being the S···O contact between the catalyst sulfur atom and the oxygen of the acyl group. A comprehensive joint experimental and...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Daniel McCauley-Walden for the degree of Doctor of Philosophy in

A detailed study of the carrier concentration method of analysis of uranium oxide

Creator:: Daniel, J. L. (Jack Leland), 1924-
Resource Type:: Dissertation
Full Text:: OXIDE by JACK LE LAND DANIEL A THESIS submitted to OREGON STATE COLLEGE in partial

Giant modulation of the electronic band gap of carbon nanotubes by dielectric screening

Creator:: Aspitarte, Lee, McCulley, Daniel R., Bertoni, Andrea, Island, Joshua O., Ostermann, Marvin, Rontani, Massimo, Steele, Gary A., and Minot, Ethan D.
Abstract:: Ion pairs and solubility related to ion-pairing in water influence many processes in nature and in synthesis including efficient drug delivery, contaminant transport in the environment, and self-assembly of materials in water. Ion pairs are difficult to observe spectroscopically because they generally do not persist unless extreme solution conditions are...
Resource Type:: Article
Full Text:: of the electronic band gap of carbon nanotubes by dielectric screening Lee Aspitarte1, Daniel R

Patterns of lipid changes with growth of chick sciatic nerve

Creator:: Munn, Hector John
Abstract:: Phospholipids and cerebrosides of the normal chick sciatic nerve were extracted by Folch procedures and separated with silica gel thin-layer chromatography using various chloroform-methanol solvents. The subsequent chemical assays were expressed as a function of the developmental stages of the chick from 15 days of incubation to 7 days after...
Resource Type:: Dissertation
Full Text:: SCIATIC NERVE Redacted for privacy Abstract approved: R. 4r. Newburgh Phospholipids and cerebrosides of

Development of Methods for Stereoselective Carbon-Carbon Bond Formation

Creator:: Wu, Zhenhua
Abstract:: Three distinct methods to achieve the stereoselective synthesis of carbon-carbon bonds were investigated, encompassing: (i) the formation of axially chiral biaryl molecules by enantioselective Suzuki cross-coupling, (ii) the synthesis of α-phenylalkylboronic esters by enantioselective chain extension, and (iii) the stereospecific synthesis of alkenes by eliminative cross-coupling of enantioenriched sp³-hybridized carbenoids....
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Paul R. Blakemore Three distinct methods to achieve the stereoselective synthesis of

Total Synthesis of Isotopologues of Xanthohumol and its Congeners for Biological Studies

Creator:: Plagmann, Layhna S.
Abstract:: Xanthohumol [XN, (E)-6´-methoxy-3´-(3-methylbuten-2-yl)-2´,4´,4´´-trihydroxychalcone], the principal prenylated chalcone from hops, and its 2,3-dihydro- (DXN) and O6-desmethyl-2,3-dihydro- (DDXN) congeners, are of potential utility for the amelioration of metabolic syndrome; however, their complex bioactivity profiles cannot be properly studied and understood without access to appropriately produced synthetic materials. In the first part of...
Resource Type:: Masters Thesis
Full Text:: R. Blakemore Xanthohumol [XN, (E)-6´-methoxy-3´-(3-methylbuten-2-yl)-2´,4´,4

Trace analysis of halogenated polycyclic aromatic hydrocarbons from an electronic waste recycling area and Guangzhou, China

Creator:: Gonzales, Leah R.
Abstract:: Halogenated Polycyclic Aromatic Hydrocarbons (X-PAHs) are ubiquitous contaminants that are thought to be generated by processes such as chemical industries and incomplete combustion, including waste incineration and electronic waste (e-waste) burning. X-PAHs are a concern for environmental and human health because they are toxic, mutagenic, and are expected to be...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF Leah R. Gonzales for the degree of Master of Science in Chemistry

Development and application of an analytical technique for the determination of methylmercury compounds in environmental samples based on isolation by distillation, followed by purge-and-trap sample concentration and GC/MS separation and detection, after aqueous phase ethylation with sodium tetraethylborate

Creator:: Rice, William R.
Abstract:: An analytical technique has been developed for the determination of methylmercury compounds in environmental samples. The technique is based on a two-stage procedure. In the first stage, methylmercury compounds are isolated from the sample matrix as methylmercury chloride (MeRgCl) by distillation. The distillation procedure is based on a series of...
Resource Type:: Masters Thesis
Full Text:: ethylation with sodium tetraethylborate AN ABSTRACT OF THE THESIS OF William R Rice for the degree of

On the Properties and Characteristics of Solution Processed Hafnium Based Thin-Films from Aqueous Precursors

Creator:: Decker, Shawn R.
Abstract:: Aqueous hydroxo Hf nanoclusters enable studies to identify and codify steps in the deposition of Hf-based oxide thin films from solution precursors. HfOCl2 reacts with combinations of H2O2(aq), acids, and TMAH to produce polymetal species at high pH and low pH. X-ray scattering and spectroscopic methods reveal the nature of...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Shawn R. Decker

The relation of a soluble factor to phosphorylation during the oxidation of reduced nicotinamide adenine dinucleotides

Creator:: Smith, Karin Ann
Resource Type:: Masters Thesis
Full Text:: her gratitude to her professors, especially Dr. R. W. Newburgh and Dr. Vernon H. Cheldelin, for

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
Full Text:: those on my advisory committee; Dr, R. W, l çwburgh, Dr, J, L. Kice and Dr. H. J. Evans is greatly

The kinetic and radiolytic aspects of control of the redox speciation of neptunium in solutions of nitric acid

Creator:: Precek, Martin
Abstract:: Neptunium, with its rich redox chemistry, has a special position in the chemistry of actinides. With a decades-long history of development of aqueous separation methods for used nuclear fuel (UNF), management of neptunium remains an unresolved issue because of its not clearly defined redox speciation. Neptunium is present in two,...
Resource Type:: Dissertation
Full Text:: . Loveland, Dr. Philip R. Watson, Dr. Manish Gupta, Dr. Taifo Mahmud, and Dr. Abi T. Farsoni, who have

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...
Resource Type:: Dissertation
Full Text:: of (R)- and (S)- MTPA esters of 166…….. 1H NMR Spectra of Synthetic (a) and Natural (b

Computational Investigation and Prediction of Mechanisms and Stereocontrol in Complex Organic Reactions

Creator:: Pattawong, Ommidala
Abstract:: Complex organic transformations, such as the addition of pyrrole to ketene using planar chiral organocatalyst (*PPY), the four-component anhydride- Manniach reactions, and the site-selective desymmetrization of meso-1,2-diol, are remarkable synthetic reactions that provide high yield and high selectivity. However, the exact mechanism and origins of stereocontrol for theses synthetic organic...
Resource Type:: Dissertation
Full Text:: Johnson, Lindsay Wills, TJ Mustard, Maduka Ogba, Daniel McCauley-Walden, and Kevin Snyder, thank you for

Catalyst selective and regiodivergent O- to C- or N-carboxyl transfer of pyrazolyl carbonates: synthetic and computational studies

Creator:: Gould, Eoin, Walden, Daniel M., Kasten, Kevin, Johnston, Ryne C., Wu, Jiufeng, Slawin, Alexandra M., Mustard, Thomas J. L., Johnston, Brittany, Davies, Tony, Cheong, Paul Ha-Yeon, and Smith, Andrew D.
Abstract:: The regiodivergent O- to C- or N-carboxyl transfer of pyrazolyl carbonates is described, with DMAP giving preferential N-carboxylation and triazolinylidenes promoting selective C-carboxylation (both with up to >99 : 1 regioselectivity). An enantioselective O- to C-carboxyl variant using NHC catalysis is demonstrated (up to 92% ee), while mechanistic and DFT studies outline...
Resource Type:: Article
Full Text:: and computational studies Gould, E., Walden, D. M., Kasten, K., Johnston, R. C., Wu, J., Slawin, A. M

Using Computational and Statistical Methods as an Aid to Study Environmentally Relevant Organic Molecules

Creator:: Dorn, Shelby E.
Abstract:: In this report, three studies are presented that utilize computations to predict transformations, identities, and properties of environmental organic molecules. Each study shows how computations can lead to models of chemical behavior. The importance of this research is rooted in the need for understanding how human behavior and health intersect...
Resource Type:: Masters Thesis
Full Text:: 2: Dr. Ivan A. Titaley, Dr. Daniel M. Walden, and Dr. O. Maduka Ogba contributed to the research

Elucidating the Origins of Trends and Selectivities of Organic Reactions through Computations and Data Analysis Techniques

Creator:: Richardson, H. Camille
Abstract:: In this dissertation, a novel method for analyzing computed transition states (TS) for organic reactions is disclosed. It introduces the use of localization-delocalization matrices as parameters in a linear free energy relationship to determine the transition state interactions responsible for differences in energy between the major and minor TS in...
Resource Type:: Dissertation
Full Text:: differences in energy in these P-N heterocycles due to R substituents, most notably a multiple linear

Studies on the synthesis of the "northern" and "southern" segments of boromycin and aplasmomycin

Creator:: Kang, Myung Chol
Abstract:: The stereocontrolled synthesis of the southern lactone 17 of boromycin and of the northern segments of both boromycin and aplasmomycin are described. The syntheses begin with enantioselective epoxidation of 3-buten-2-ol (42) to provide the optically active 2(S),3(R) epoxy alcohol 43. The absolute configuration was confirmed by preparing 43 from (-)-2,3-dihydroxybutyric...
Resource Type:: Dissertation
Full Text:: begin with enantioselective epoxidation of 3-buten-2-ol (42) to provide the optically active 2(S),3(R

CoLocalized Excitation Emission Resolution : A CLEER approach for multicolor fluorescence analysis

Creator:: Almlie, C. Kyle
Abstract:: Fluorescence has proven to be a robust and powerful method of analysis in numerous fields: forensics, pharmaceutics, geology, food science, and environmental sciences have all developed a large collection of fluorescence instruments and methods to overcome application-specific challenges. Biological applications saw the same development of a fluorescence toolkit with methods...
Resource Type:: Dissertation
Full Text:: Complex’ (R+P) miRNA biosensor that reduced degradation and off analyte binding. Chapter 2

Use of Targeted and Non-Targeted Analysis to Study Complex PAH Environmental Mixtures

Creator:: Chibwe, Leah
Abstract:: Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous contaminants formed from the incomplete combustion of organic material. These contaminants are of concern because of their widespread presence in the environment and toxic properties. In addition, PAHs encompass a class of diverse compounds with varying physicochemical properties and exist in the environment as...
Resource Type:: Dissertation
Full Text:: access database using the R platform to share mass spectral information of halogenated organic

Centrifugal Partition Chromatography, Microfabrication, and a Smartphone-based Detection Platform : Analytical Chemistry from Preparative-scale Separation to Micro-scale Analysis

Creator:: Boonloed, Anukul
Abstract:: Analytical chemistry is an area of chemistry primarily focused on the study and use of instruments for separation, identification, and quantification of an analyte of interest. Specifically, separation science within analytical chemistry often refers to the process of dividing mixtures into their small component parts based on differences in their...
Resource Type:: Dissertation
Full Text:: . Jintana Nammoonnoy, Dr. Esha Chatterjee, Dr. Tae-Hyeong Kim, Sara Townsend, and Daniel Huynh. I am

Comprehensive, Low-Cost Wicking Microfluidic Analytical Devices for Clinical Diagnostics and Environmental Analysis

Creator:: Bandara, Gayan C.
Abstract:: Analytical techniques are utilized in a wide variety of applications. Traditionally, analytical measurements are achieved by trained personnel in a laboratory setting using expensive scientific instruments, which limits their applicability in resource-limited areas and point-of-care applications. Therefore, the concept of enabling these laboratory-based qualitative and quantitative assays in microfluidic device...
Resource Type:: Dissertation
Full Text:: order to quantitatively detect different analytes. A digital image based red (R), green (G), and blue

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

The synthesis and spectral properties of 2,4-dioxabicyclo [3.3.1] nonanes

Creator:: Provant, Stephen Glenn
Abstract:: 3-Methyl-2,4-dioxabicyclo [3.3.1] nonane and 7-hydroxy-3-methyl-2, 4-dioxabicyclo [3.3.1] nonane were synthesized by the method of Croxall, Glavis and Neher, although in low yields. The structure of both compounds was proven by analytical methods and analysis of their spectral properties. Tentative configuration of C-3 in both compounds was assigned on the assumption...
Resource Type:: Masters Thesis
Full Text:: SYNTHESIS AND SPECTRAL PROPERTIES OF SOME 2,4- DroxABrcYCLo [r. :. ,] NoNANES by STEPHEN GLENN PROVAN'I A

Dielectric relaxation in crystalline V₂O₅

Creator:: Mar, Kenneth Mow
Resource Type:: Dissertation
Full Text:: group, especially Drs. A. Gudat, J. Paul, and R. Chaney are due thanks for their technical assistance

Prediction and Measurement of Polycyclic Aromatic Hydrocarbons (PAHs) Transformation Products in the Environment.

Creator:: Titaley, Ivan A.
Abstract:: Polycyclic aromatic hydrocarbons (PAHs) are a group of environmental contaminants consisting of fused benzene rings. Parent-PAHs, methylated-PAHs (MPAHs), and PAHs with molecular weight of 302 a.m.u (MW302-PAHs) are considered as unsubstituted-PAHs. These unsubstituted-PAHs undergo transformation reactions resulting in the formation of PAH-transformation products (PAH-TPs), or substituted-PAHs, including nitrated-, oxygenated-, and...
Resource Type:: Dissertation
Full Text:: . Maduka Ogba, Dr. Robert L. Tanguay, Dr. Lisa Truong, and Daniel M. Walden. Thank you to various

Mannich reactions involving the use of acetaldehyde, monochloroacetaldehyde and dichloroacetaldehyde

Creator:: Schaeffer, William Donald
Resource Type:: Masters Thesis
Full Text:: of 0nedurlr 8.rhe*1 D*t thrrtr tr lfrrrf*$r{ . , g$tobrr Ig, L$$t . . ffprd by l{r Mh

Investigating Low-Frequency Vibrations in Condensed Matter Using Time-Resolved Third-Harmonic Generation Spectroscopy

Creator:: Wang, Liang
Abstract:: In this thesis, I present a new method we developed to study low frequency (< 700 cm⁻¹) vibrational dynamics: Time-resolved third-harmonic generation (TRTHG) spectroscopy. Among a variety of vibrational spectroscopy techniques, TRTHG differentiates itself with robustness, versatility, and simplicity. In TRTHG experiment, that involves only two ultrashort laser pulses, the...
Resource Type:: Masters Thesis
Full Text:: . Fang, C.; Frontiera, R. R.; Tran, R.; Mathies, R. A., Mapping GFP structure evolution during proton

The reaction between O-ions and F centers

Creator:: Staible, Thomas Fredrick
Abstract:: The photochemical reaction between O⁻ ions and F centers was investigated. The activation energy was determined by the Arrhenius law to be 0.10 + 0.04 eV for temperature below 180°K. The diffusion of alpha centers towards the oxide ion was eliminated as the rate limiting step and the low trapping...
Resource Type:: Masters Thesis
Full Text:: Bleach Time (mins) Figure 2 n vs. Bleaching Time 15.60 15.50 15.40 0 r:4 15.30 nn 0 15.20 15.10

The effect of oxide impurity on the conductivity of potassium chloride

Creator:: Kouts, Daberath
Abstract:: Direct current conductivity measurements on KC1:O[superscript]= crystals were used to determine an enthalpy of 0.42 ev for the dissociation for anion-vacancy-oxide ion complex. The entropy of dissociation was found to be approximately -4x 10⁻⁴ev deg⁻¹. The intrinsic "activation" energy was found to be 1.91 ev as compared to 1.95 ev,...
Resource Type:: Masters Thesis
Full Text:: from the thesis of R. E. Seevers. The National Science Foundation must also be thanked for their

Heats of immersion and swelling of quaternary ammonium complexes of montmorillonites

Creator:: St. Clair, Akos Dominic
Abstract:: Heats of immersion were obtained for four different organophilic clay complexes in a series of normal alcohol-heptane mixtures with alcohols of increasing chain length. The immersion calorimeter employed was the Dewar type with a sensitivity of approximately 5 x 10⁻⁵°C. Gel volumes were determined for two of the clay complexes...
Resource Type:: Masters Thesis
Full Text:: , and is therefore termed a .? Q. -Q, , 1 \ , I i I a . / . , \ . , / r ,\ iy,' i

Determination of fluorochemicals in waste-dominated aqueous systems

Creator:: Huset, Carin A.
Abstract:: While fluorochemicals have been detected all over the world and in wastewater treatment plants, the effect of wastewater effluent on the receiving waters has not been evaluated. In the first study, the mass flow of fluorochemicals emanating from wastewater treatment plants along the Glatt River in Switzerland was evaluated. The...
Resource Type:: Dissertation
Full Text:: , 28, 49-57. (8) Seacat, A. M.; Thomford, P. J.; Hansen, K. J.; Clemen, L. A.; Eldridge, S. R

A continuous amperometric monitor for aqueous sulfite solutions using bipolar current readout

Creator:: Porter, Miles John
Abstract:: A continuous amperometric monitor for aqueous sulfite solutions has been developed employing the electro-oxidation of sulfur (IV) in 0. 1 M sulfuric acid at a glassy carbon test electrode. The monitor employs a hydrodynamic flow cell, in which the solution stream enters the cell through an orifice impinging on the...
Resource Type:: Masters Thesis
Full Text:: -) ( +) 1B Rf 0 Eout = R f .i B U, 6 configuration. The operational amplifier will cause a positive

Synthesis and study of new optical hosts

Creator:: Orf, Christopher B.
Resource Type:: Masters Thesis
Full Text:: . Moulton, R. M. Osgood, Optics Let., 4, 184 (1979). 3. J. W. Baer, M. G. Knights, E. P. Chiklis, H. P

Classification of stationary phases in gas chromatography

Creator:: Chong, Elee Elizabeth
Abstract:: Ultraviolet spectroscopy and dispersive solubility parameters correlated to the ratios of retention times have proven valuable in classification of gas chromatography stationary phases by the donor-acceptor properties. Iodine was directly dissolved into stationary phases and the absorption frequency shift of complexes was correlated with the carbon tetrachloride/chloroform retention ratio on...
Resource Type:: Masters Thesis
Full Text:: interaction n the refractive index R the molar refraction M molecular weight d the density in grams per cm

Semi-volatile organic compounds as molecular markers for atmospheric and ecosystem transport

Creator:: Genualdi, Susan A.
Abstract:: The use of semi-volatile organic compounds (SOCs) as molecular markers to identify the contributions of regional and long-range atmospheric transport, as well as current and historic sources, and contaminant deposition in remote ecosystems of the Western U.S. was investigated. Trans-Pacific air masses influenced by Siberian biomass burning events had elevated...
Resource Type:: Dissertation
Full Text:: ). LITERATURE CITED (1) Bailey, R.; Barrie, L. A.; Halsall, C. J.; Fellin, P.; Muir, D. C. G. Journal of

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:: Conshocken PA, USA [4] D. T. Stevenson and R. J. Keyes, J. Appl. Phys., 26, 190 (1955) [5] S. M. Sze

A study of certain novel reactions of 4,6-dimethoxy-5-nitropyrimidine

Creator:: Harper, Richard Waltz
Abstract:: Reaction of 4, 6-dimethoxy-5-nitropyrimidine [I], with refluxing pyridine, was discovered to yield the methylpyridinium salt of 1, 6-dihydr -4-hydroxy-1-methyl-5-nitro-6-oxopyrimidine [III]. Possible use of I as a general N-methylating agent was explored. No appreciable reaction occurred between I and refluxing excess n-butyl alcohol. Similar reaction involving quinoline failed to yield an...
Resource Type:: Masters Thesis
Full Text:: -5 -nit r o -6 - oxopyrimidine. 31 EXPERIMENTAL All melting points were taken on a Fischer

Measuring in situ reductive dechlorination rates in trichloroethene-contaminated groundwater

Creator:: Hageman, Kimberly J.
Abstract:: Trichloroethene (TCE) is the most frequently detected organic contaminant in groundwater, is classified as a probable human carcinogen, and exhibits toxicological effects on the human endocrine, immune, developmental, and reproductive systems. While significant research efforts have been devoted to the development of strategies for remediating TCE-contaminated groundwater, their advancement is...
Resource Type:: Dissertation
Full Text:: ............................... 27 3.1. Test Set I, Test 1, R(A) = R(B) = 5. Total (aqueous plus sorbed) concentrations of the

An investigation of the simultaneous diffusion of PB⁺⁺ and Cd⁺⁺ in NaCl crystals and KCl crystals

Creator:: Krause, Jerry Lee
Resource Type:: Dissertation
Full Text:: 1. 50 1. 00 w 0. 50 O 0 0 0 80 160 240 320 400 480 560 640 D IS T A N C E ( m) 0- C R Y S

Metabolism of pyrrolizidine alkaloids by ruminal microbes

Creator:: Hovermale, Jeannette Talbot
Abstract:: The plant Senecio jacobaea (tansy ragwort) produces several macrocyclic pyrrolizidine alkaloids which cause irreversible liver cirrhosis. All of the pyrrolizidine alkaloids in Senecio jacobaea are macrocyclic diesters of the necine base retronecine, with the two most predominant being seneciphylline and jacobine. Unlike horses and cattle, sheep and goats are generally...
Resource Type:: Dissertation

Fate and transport of the surfactant linear alkylbenzenesulfonate in a sewage-contaminated aquifer

Creator:: Krueger, Carolyn J.
Abstract:: Linear alkylbenzenesulfonate (LAS) is the most widely used anionic surfactant in commercial detergent formulations. The environmental fate of LAS is of interest because of its disposal to wastewater treatment facilities and subsequent occurrence as a micropollutant in surface waters and groundwater. While LAS fate in wastewater treatment systems and surface...
Resource Type:: Dissertation
Full Text:: , D. L.; Daniel, S. R. J. Contain. Hydra 1992, 9, 55. (30) Kimerle, R. A.; Swisher, R. D. Wat. Res

Donor centers in vanadium pentoxide

Creator:: Yerke, John Fredric
Abstract:: The dielectric relaxation of V₂ 0₅ was investigated using the method of Davidson and Cole. By means of an Argand diagram, deviation from an exact Debye dielectric was established. This was done with the parameter β. For a Debye dielectric β= 1. The largest value of β for V₂O₅ was...
Resource Type:: Masters Thesis
Full Text:: is treated by Frohlich (5) and Daniel (2). The effective field acting on a dipole is generally not

Electrode potentials of nickel and cobalt in a fused electrolyte

Creator:: Hamby, Drannan Carson, 1933-
Resource Type:: Masters Thesis
Full Text:: polarography and associated techniques in fused salts. The thesis of R. A. Osteryoung of this group

High resolution ionization-detected simulated Raman spectroscopy

Creator:: Crew, Marshall D.
Abstract:: A new experimental apparatus was built at Oregon State University to perform high resolution stimulated Raman spectroscopy in a pulsed molecular jet at state densities of the order of 10¹¹ cm⁻³. The technique uses a stimulated Raman step to first populate a vibrational/rotational level and then a resonantly enhanced multiphoton...
Resource Type:: Dissertation
Full Text:: Philosophy thesis of Marshall D. Crew presented on February 24, 1997 APPROVED: Major o essor, r resenting

Development of automated flow injection apparatus and a novel flow cell for chemi- and bioluminescence determinations

Creator:: Gander, Stuart C.
Abstract:: A practical and versatile instrument has been developed both to optimize the chemistry of bio- and chemiluminescence reactions and to measure ultra-trace quantities of associated analytes. The instrument consists of a pneumatic flow injection system linked to a detection cell and a signal processing and readout system. The disk-like cell...
Resource Type:: Masters Thesis
Full Text:: Types of Flow Cells for CL Detection and the Continuous Mixing of Reagents (R) and Sample (S). 4 7

Analysis of semi-volatile organic compounds in high elevation lake sediments

Creator:: Wang, Yunzhu
Abstract:: The transport and deposition of airborne contaminants, including semivolatile organic compounds (SOCs), to high elevation ecosystems is recognized as a potential threat to these ecosystems. The objectives of this research were to develop an analytical method to measure a wide range of SOCs in high elevation lake sediment and to...
Resource Type:: Masters Thesis
Full Text:: 210Pb in sediment of age t years must satisfy: Co(t)*r(t) = const (Eqt 1-1) Where r(t) g/cm2yr is

Fluorinated and deuterated surrogates for quantifying microbial transformation of chlorinated ethenes and ethanes in anaerobic groundwater

Creator:: Ennis, Elliot G.
Abstract:: Chlorinated aliphatic hydrocarbons (CAHs) such as vinyl chloride (VC) and 1,-2 dichioroethane (DCA), are wide-spread groundwater pollutants found at many contaminated field sites around the world. Quantitative tools are needed to determine the in situ rates of VC and DCA transformation to ethene in contaminated groundwater. The objective of this...
Resource Type:: Masters Thesis
Full Text:: signature below authorizes release of my thesis to any reader upon r~quest. Elliot G. Ennis, Author

Kinetics of F-center aggregate formation

Creator:: Paul, James Leonard
Resource Type:: Dissertation
Full Text:: compared with other experimental values. The identity of the N1 and R bands, as postulated by Lehmann

The normal vibrational analysis of polyacetaldehyde

Creator:: Lee, Dorothy
Abstract:: A method of calculating the normal vibrations of polymer molecules is presented in detail. The method is based on that used by Schachtschneider and Snyder in their analysis of polypropylene but has not heretofore been published. The factoring of the infinite matrix and reduction to the coordinates of the unit...
Resource Type:: Dissertation
Full Text:: H=T+V r = rlzD A? Ly=rlzDXrof i W'here the Q's are the rnass weighted generalized norrnal

Formation of alkyl-and dialkylcarbenes. The 3-cyclohexenyl carbinyl carbene system

Creator:: Crouse, Dale McClish
Abstract:: The 3-cyclohexenyl carbinyl carbene species was formed by the thermal decomposition of the p-toluenesulfonylhydrazone sodium salt and by oxidation of the hydrazone. Several oxidizing agents were studied. The products were investigated under aprotic and protic conditions and at various temperatures. The diazocompound was formed as an intermediate and found to...
Resource Type:: Masters Thesis
Full Text:: 1.12 R. To show these new species had only one carbon, 60% C 13 diazomethane was irradiated. Only one

A study of the Mn⁺² and Pb⁺²-Mn⁺² impurity systems in alkali chlorides

Creator:: Mannion, William Alphonsus
Resource Type:: Dissertation
Full Text:: for the Ph. D. (Name) (Degree) in CHEMISTRY presented on (Major) 222 ( Da te r Title: A STUDY OF

The identification and quantitation of complex polycyclic aromatic hydrocarbon mixtures in environmental samples using comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry

Creator:: Manzano, Carlos A.
Abstract:: Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous contaminants and are mostly products of the incomplete combustion of organic material. PAHs are often found in environmental samples as a complex mixture of isomers. In addition, the same sources that produce complex PAH mixtures also produce other poorly characterized mixtures of organic compounds,...
Resource Type:: Dissertation
Full Text:: , P.; Vilanova, R. M.; Grimalt, J. O., Sediment Fluxes of Polycyclic Aromatic Hydrocarbons in

An investigation of the metaborate monomer and trimer ions in alkali halide crystals

Creator:: Becker, Charles Ransford
Abstract:: The infrared spectra of the metaborate monomer and trimer ions in NaC1, KC1, and KBr were studied. These spectra contain bands due to the trimer in solid solution, in a second phase of the appropriate potassium or sodium salt, and perhaps on adjacent lattice sites. Furthermore, complex equilibria exist between...
Resource Type:: Dissertation
Full Text:: acknowledged. A note of appreciation is also due R. J. Murray for adapting the computer program and for

Synthesis and study of new borate optical hosts

Creator:: Alekel, Theodore
Resource Type:: Dissertation
Full Text:: resulted from a collaboration of Dr. Kathleen I. Schaffers, Dr. Paul D. Thompson, myself, James R. Cox

A contribution to the development of wide band-gap nonlinear optical and laser materials

Creator:: Stone-Sundberg, Jennifer L.
Abstract:: The primary focus of this work is on examining structure-property relationships of interest for high-power nonlinear optical and laser crystals. An intuitive and simply illustrated method for assessing the nonlinear optical potential of structurally characterized noncentrosymmetric materials is introduced. This method is applied to materials including common quartz and tourmaline...
Resource Type:: Dissertation
Full Text:: summed according to the directional cosines or orientation functions (R) of the individual groups and

The formation of radioactive lysine and histidine from CH₃C¹⁴OOH and CH₃C¹⁴O COOH in yeast

Creator:: Davis, James Wendell
Resource Type:: Masters Thesis
Full Text:: that a good education is a priceless possession. TM3L OF CONT1NT3 PaEe INLRoDuc».r ION

Automation of the Pearl-Benson method for spent sulfite liquor

Creator:: Olson, Gary Gilman
Abstract:: An automatic, continuous analyzer has been developed which is suitable for estimating the level of spent sulfite liquors (SSL) in laboratory samples. The analyzer makes use of a version of the Pearl-Benson, or nitroso method, and, in its present form, is useful for samples whose actual SSL solids concentrations are...
Resource Type:: Dissertation
Full Text:: felt that the Durrum Dial -A- Pump (Durrum Instrument Corp. , Palo Alto, Calif. ) would be par

Atmospheric transport of anthropogenic semi-volatile organic compounds to the Olympic Peninsula of Washington State

Creator:: Killin, Robert K.
Abstract:: Ambient high-volume (hi-vol) air samples were collected between March 15th and May 30th 2002, at Cheeka Peak Observatory (CPO), located on the tip of the Olympic Peninsula, Washington State. This sampling campaign was in conjunction with the 2002 Inter-Continental Transport and Chemical Transformation (ITCT 2K2) Campaign and the Photochemical Ozone...
Resource Type:: Masters Thesis
Full Text:: spring of 2002. Robert K. Kuhn', Staci L. Simonich1'2, Daniel A. Jaffe3, Cindy L. DeForest"4, Glenn R

New Treatments for HIV and Cancer: Uncovering Bioactive Compounds from Small Molecule Sources

Creator:: Overacker, Ross D.
Abstract:: Small molecule drugs have been instrumental in our fight against diseases, beginning when some of the earliest ancient cultures used plant remedies to treat illnesses. More recently, the skill of isolating and characterizing the active ingredients within bioactive plants and microbial extracts has led to the isolation and design of...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Ross Daniel Overacker for the degree of Doctor of Philosophy in Chemistry

Suspect Screening of Hydrocarbon surfactants in AFFFs and AFFF-Contaminated Groundwater by High Resolution Mass Spectrometry

Creator:: Garcia, Raymmah A.
Abstract:: Aqueous film forming foams (AFFFs) are proprietary mixtures containing hydrocarbon surfactants and per-and polyfluoroalkyl substances (PFASs) that are used to extinguish hydrocarbon-based fuel fires. There is limited information on hydrocarbon surfactants in AFFFs and AFFF-contaminated groundwater even though they are more abundant (5-10% w/w) than PFASs (0.9-1.5% w /w) in...
Resource Type:: Masters Thesis
Full Text:: -film-foam/ (October 16), 5. Buck, R. C.; Murphy, P. M.; Pabon, M., Chemistry, Properties, and Uses

Precursor Chemistry and Film Structure and Properties via Solution Deposition

Creator:: Huang, Yu
Abstract:: Chemistry of preparing dense film from solution deposition is explored with several cases in this thesis. Surface dense structure, conversion at melting point, and ion exchange in aqueous solution are the main topics covered here for the thin films of aluminum oxide phosphate and tin dioxide. Thin film density, optical...
Resource Type:: Dissertation
Full Text:: limited to 2.2 nm. [9] Similarly, Daniel E. Walker, et al. also prepared IZO film with mobility at 19.7

Mammalian heart cytochrome oxidase

Creator:: Kuboyama, Morio
Abstract:: Preparation of a cytochrome c-cytochrome oxidase complex was achieved, using crystalline beef cytochrome c and purified cytochrome oxidase from beef heart muscle, or from the Keilin-Hartree preparation. Succinate oxidase was reconstituted with the complex. A mixture of cytochrome oxidase, solubilized with nonionic detergent, and excess cytochrome c was exposed to...
Resource Type:: Dissertation
Full Text:: Fig~r~ Page l Sephadexcolumnchromatography of the sonically irradiated mixture of cytochrome £ and

Studies toward the total synthesis of phorboxazole A

Creator:: Kuntiyong, Punlop
Abstract:: Studies toward the total synthesis of a highly potent cytotoxic marine natural product, phorboxazole A, were conducted and resulted in a route to an advanced intermediate, C4-C32, for this purpose. A key feature of our approach is the stereoselective synthesis of two cis-2,6-disubstituted tetrahydropyrans present in the macrolide portion of...
Resource Type:: Dissertation
Full Text:: anisotropy between (S)- and (R)-MTPA ester derivatives.11 Since the relative stereochemistry of the

Synthetic studies on marine natural products : Part 1. Synthesis of the sesquiterpenoid dihydropallescensin D via manganese(III)- mediated carbocyclization. Part 2. Approaches toward the synthesis of prianosin and discorhabdin alkaloids

Creator:: Yager, Kraig M.
Resource Type:: Dissertation
Full Text:: . However, according to Scheuer, "...isolation of two unusual nucleosides (5, R =H, Me) from the Jamaican

Certain chemical and sense-perceptible changes resulting from the gamma irradiation of meats and model systems

Creator:: Jones, Dallas Eugene
Resource Type:: Masters Thesis
Full Text:: degree of MASTER OF SCIENCE June 1958 r}trnoYmr Redacted for Privacy Alrosl.etc Frofasfisr of

The effect of impurities on the gamma-ray coloration of potassium chloride crystals

Creator:: Hinks, David George
Abstract:: The incorporation of europium and dysprosium in potassium chloride crystals was investigated. The crystals were prepared by the Kyropoulos method from melts containing the rare-earth chlorides. The concentration of these rare-earth ions in the crystals was determined by neutron-activation analysis. The distribution coefficient of europium and dysprosium between the molten...
Resource Type:: Dissertation
Full Text:: argon in the apparatus. Then the water cooled r o d, which held a seed crystal, was lowered until the

Catalytic desymmetrization of D₂d̳-symmertic proprochiral tetrasubstituted biphenyl compounds: a novel approach to the synthesis of axially chiral C₂-symmetric molecules

Creator:: Gunderson, Jeremey Tyson
Abstract:: Many D2d-symmetric 2,2',6,6'-tetrasubstituted biphenyls are readily prepared via net oxidative dimerization of appropriate 1,3-disubstituted benzenes. Conversion of such proprochiral compounds to useful C2-symmetric chiral biphenyls requires formal replacement of two substituents on opposing aryl ring units with alternate groups. This under exploited desymmetrization tactic has been demonstrated for the generation...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Paul R. Blakemore Many D2d-symmetric 2,2',6,6'-tetrasubstituted biphenyls are

Synthesis of the boron-boron bond

Creator:: Schaad, Lewis Hyde
Resource Type:: Masters Thesis
Full Text:: , Daniel R. Vapor pressure of pure substances. Industrial and Engineering Chemistry 39:517-550. 1947. 32

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
Full Text:: Science 2006, 144(1), 31-43. (2) Addison, R. F. PCB replacements in dielectric fluids. Environmental

Synthetic studies on natural products : Part I. The total synthesis of ±-euonyminol and ±-3,4-dideoxymaytol : Part II. The absolute configuration and enantioselective synthesis of curacin A

Creator:: Kim, Tae-Seong
Resource Type:: Dissertation
Full Text:: synthesized from methyl (R)-3-hydroxy-2-methylpropionate (86) in six steps and compared with the same

Organic chemistry of bark phenolic acid

Creator:: Fahey, Michael Duncan
Resource Type:: Dissertation
Full Text:: J3lsulfite Soluble Products from Nitrobenzene Oxidation of Methylated Phenolic AcId . . . . . . ........ r

Mass spectrometric studies on glycoprotein oligosaccharides : a modified procedure for the liquid secondary ion mass spectrometric analysis of glycoprotein oligosaccharides. Studies on the nature of glycosylation on baculovirus-expressed mouse interleukin-3

Creator:: Hogeland, Kenneth Eden
Resource Type:: Dissertation
Full Text:: 106 108 109 I 1 1 113 List of Schemes Scheme Page 2.1: R eductive Amination of

Luminescent sulfides and solution-deposited oxide thin films

Creator:: Anderson, Jeremy T.
Abstract:: Solid state luminescent sulfides are prepared as powders in order to elucidate the relationship between structure and light emission. While the sulfides studied in this dissertation are known phosphors, materials are investigated in a variety of new ways. Elementary properties and structures of MgS are reviewed, and preparation of MgS...
Resource Type:: Dissertation
Full Text:: . Keszler, and R. E. Presley, Transparent Electronics, Springer, New York, 2007. [11] J. Robertson, Rep

An investigation of solid alkali halide phosphors

Creator:: Fredericks, William John
Resource Type:: Dissertation
Full Text:: distilled water. The crucib]a o. E ° (J UI Ja 2 ( o VI 4. r.] J. Ih.. 28 ° 2M

Pathways of glucose utilization and ribose synthesis in the chick embryo

Creator:: Coffey, Ronald Gibson
Abstract:: The production of C¹⁴O₂ metabolized from glucose labeled in specific carbon atoms by homogenates of chick embryonic and adult heart was compared by the radiorespirometric technique. Homogenates of early (two to five days of incubation) embryo hearts were found to utilize the phosphogluconate pathway of glucose catabolism to a greater...
Resource Type:: Dissertation
Full Text:: triphospho tone -l-C , 14 which was metabolized to c o14 2 to a grea.te r extent than glucose- U -C

Stationary electrode voltammetry and chronoamperometry in an alkali metal carbonate-borate melt

Creator:: Petcoff, Darrell George
Abstract:: The electrochemistry of the lithium-potassium-sodium carbonate-borate melt was explored by voltammetry and chrono-amperometry. In support of this, a controlled-potential polarograph and associated hardware was constructed. Several different types of reference electrodes were tried before choosing a porcelain membrane electrode containing a silver wire immersed in a silver sulfate melt. The...
Resource Type:: Dissertation
Full Text:: help of R. Jay Murray, and both he and John A. Starkovich are thanked for their assistance in this. A

Nonlinear Raman spectroscopy in supersonic jets

Creator:: Pubanz, George A.
Abstract:: The techniques of coherent anti-Stokes Raman spectroscopy (CARS) and inverse Raman spectroscopy (IRS) are used to examine carbon dioxide aggregation in a supersonic jet expansion. To promote the formation of small clusters, a BMW injector valve is modified to permit its use as a pulsed nozzle at very cold temperatures....
Resource Type:: Dissertation
Full Text:: ) where y = Cp/C, is the ratio of the heat capacities for a gas, T is the temperature and r is the gas

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
Full Text:: preparation and review of this manuscript. Chapter 4. Daniel T. Cohen conducted the synthesis and

A study of factors leading to N, N-diacetylation of aminopyrimidines

Creator:: Carson, Bonnie L.
Abstract:: Although 4- and 5-diacetamidopyrimidines have been reported in the literature within the past eleven years, it was not until 1965 that a 2-diacetamidopyrimidine was reported. The current investigation was undertaken to determine whether other 2-diacetamidopyrimi-dines could be synthesized and what the effect of various nuclear substituents would be on the...
Resource Type:: Masters Thesis
Full Text:: (6) 10 1. 5 86 NH2 9(1) 10 1. 5 92 NH2 3(1) 10 1. 5 89 NH2 3(1), 6(6) 10 1. 5 30 NH2 4(1) R 1

An investigation of the crystal growth of the heavy metal sulfides in supercritical hydrogen sulfide

Creator:: Lewis, Leroy Crawford
Abstract:: Solubility studies on the heavy metal sulfides in liquid hydrogen sulfide at room temperature were carried out using the isopiestic method. The results were compared with earlier work and with a theoretical result based on Raoult's Law. A relative order for the solubilities of sulfur and the sulfides of tin,...
Resource Type:: Dissertation
Full Text:: to the reaction SnS r H2S --> H2 + SnS2. (2. 1) Verification that the product formed was stannic

The theory and application of galvanovoltammetry. Design, construction and evaluation of a continuous liquid stream analyzer employing a galvanovoltammetric detector and low cost automatic digital concentration readout

Creator:: Kendall, Donald Ray
Abstract:: The theory and ways of applying a new electroanalytical detectior method were developed. The method, called galvanovoltammetry, consists of the measurement of current from the bipolar electrode of a three electrode cell which consists of a working electrode and a counter electrode, between which a constant current is applied, and...
Resource Type:: Dissertation
Full Text:: teaching has provided. Thanks are also due to Dr. R. Springer, Dr. P. Fehlandt and W. Carruth who so

Design, construction, and characterization of a six-electrode, direct current, variable length plasma source for atomic emmission spectroscopy

Creator:: Shields, James Phillip
Abstract:: The variable length, six-electrode plasma source for atomic emission spectroscopy described here is operated from three compact, simple, and inexpensive direct current power supplies. The vertical arcs formed between the three electrode pairs completely entrain the sample and are typically operated at 40 V and 20 A. Three concentric quartz...
Resource Type:: Dissertation
Full Text:: , Variable Length Plasma Source for Atomic Emission Spectroscopy Abstract approved: Redacted for privacy r

Synthetic studies on necic acids of pyrrolizidine alkaloids

Creator:: Lee, Nadine Chauyi
Resource Type:: Dissertation
Full Text:: the monoterpene (R)-(+)-citronellal (102). The synthesis proved that the original stereochemical

Total synthesis of indole alkaloids: pt. 1. Asymmetric synthesis of (-)-ibogamine. pt. 2. An approach toward the synthesis of koumine

Creator:: Choi, Younggi
Abstract:: PART I. The preparation of (-)-ibogamine (1) in fourteen steps from benzoquinone and in 10% overall yield is a powerful illustration of the value of the asymmetric Diels-Alder reaction as a starting point in a multistep synthesis. All four cycloadducts, 70, 77, 84 and 96, obtained with the (S)-BINOL-TiCl₂ complex...
Resource Type:: Dissertation
Full Text:: , Paul R. Blakemore, Cindy Browder, Rich G. Carter, Bobby Chow, Jorg Deerberg, Nicholas E. Drapela, Uwe

Kinetic studies of some thermal rearrangements

Creator:: Schatz, Bruce Stewart
Resource Type:: Dissertation
Full Text:: 10-5sec-1 at 182', 47 ,;,; _ = _ . r ` ' r c. I ; L, ' k = 3.6 X 10- 5sec -1 at 200

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
Full Text:: intercontinental transport of air pollutants (30). LITERATURE CITED: (1) Simonich, S. L.; Hites, R

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:: : Petasalbine 8: Senemorin R = angelate 9: R = H 0 OH 3: Euryopsin 4: 63-Hydroxyeuryopsin 6: Ligularone 7

A study of the biosynthesis of sterols and related compounds by a bovine aorta preparation

Creator:: Walsh, Marilyn Ruth
Abstract:: Previous investigations of the biosynthesis of sterols by the arterial wall have shown that the intact aorta is capable of low level incorporation of labeled precursor into a sterol digitonide. The biosynthesis of sterols and related lipids by a cell-free preparation of bovine aorta was investigated in the present study....
Resource Type:: Masters Thesis
Full Text:: OF SCIENCE (Name) (Degree) in Chemistry (Biochemistry) presented on (Major) r¿'4 J'7jI`ï (Date

Innovative Bioanalytical Tools & Methods for Combinatorial Non-Coding RNA Analysis

Creator:: Zhang, Lulu
Abstract:: Recently researchers have discovered that groups of small non-coding RNAs (ncRNAs) play regulatory roles in gene expression and participate in various biological processes. For example, pathogenesis of many diseases, cell cycle regulation, and signaling pathways. Intracellular and live cell imaging of small ncRNA groups will reveal their relative expression levels...
Resource Type:: Dissertation

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