Digital Commons Network^™

4th Annual Umr-Dnr Conference On Energy -- Entire Proceedings, University Of Missouri--Rolla

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

No abstract provided.

19th Annual Conference On Analytical Chemistry

Rocky Mountain Conference on Magnetic Resonance

Program and abstracts from the 19th annual meeting of the Conference on Analytical Chemistry, co-sponsored by the Rocky Mountain Section of the Society for Applied Spectroscopy and the Rocky Mountain Chromatography Discussion Group. Held in Denver, Colorado, August 1-3, 1977.

High Pressure Liquid Chromatographic Methods For The Separations Of Derivatized Alpha-Keto Acids And Thiamine Phosphate Esters, Bruce Clark Hemming

Theses and Dissertations

Improved methods have been developed for separation of a-keto acid derivatives and for thiamine and its phosphate esters. Linear gradient reverse phase chromatography using ion-pair formation provides baseline resolution for a seven-component homologous series of a-keto acid dinitrophenylhydrazones having increasing carbon chain lengths. Branched-chain keto acids can also be separated. Aldehyde derivatives were examined as possible interfering compounds. Peak identification in biological material was confirmed for pyruvate by an enzymic peak shift technique. Monitoring near 365 nm permits low nanogram detection. Preliminary studies of keto acids in biological material illustrate the method's applicability. The same system with slight changes separates …

Comparisons Between Oriented Film And Solution Tertiary Structure Of Various Nucleic Acids, Douglas R. C. Priore

Chemistry and Chemical Biology ETDs

It was desired to help establish whether or not the tertiary structure of a biomolecule is the same in a cry­stal (or an oriented film) as it is in solution. Generally it is accepted that the structures in these diverse environ­ments are similar, if not identical. By comparing the extinction coefficients obtained from oriented film data to those obtained from solution data it was hoped that this question might further be resolved. To this end an electric dichroism instrument built in our lab was used to measure the dichroic signal so as to calculate, with the help of the ultraviolet …

Infrared-To-Visible Upconversion In Rare Earth Doped Materials, Deon G. Ettinger

Chemistry and Chemical Biology ETDs

Upconversion materials have been prepared which may be stimulated by incident 970 nm radiation to emit in the visible region. The couples Yb⁺³-Ho⁺³ in a YF₃ host and Yb⁺³-Er⁺³ in YF₃, YPO₄, Li₃PO₄ and Y₂O₂S hosts have been studied at temperatures from 9K to 273K. For (Y_.80Yb_.19Er_.01)F₃ emission bands at 657 nm, 538 nm, 520 nm, 409 nm and 379 nm have been detected and determined to result from 3-, 2-, 2-, 3-, and 3-photon …

Conversion Of Farnesyl Pyrophosphate And Squalene To Sterols By Rat Liver Microsomal Enzymes: Specificity Of Sterol Carrier Protein₁, Kathleen Lobaugh Gavey

Chemistry and Chemical Biology ETDs

The conversion of farnesyl pyrophosphate to squalene by rat liver microsomes was investigated. The enzyme exhibited an apparent maximum velocity at a substrate concentration of 30 μM. No evidence of substrate inhibition was seen at concentrations up to 65 μM. Phosphatases present in the microsomes or in the 105,000 x g supernatant (S105) did not interfere with squalene synthesis under the experimental conditions used.

s₁₀₅ slightly enhanced the biosynthesis of squalene at the lowest concentrations of microsomal protein studied. The effect was reversed at higher concentrations of microsomes. A 1O-fold increase in the concentration of s₁₀₅ did not …

Light Scattering Studies Of Transverse Sound Wave And Molecular Motion In Benzonitrile, Scott L. Whittenburg, C. H. Wang

Chemistry and Biochemistry Faculty Publications

The zero‐frequency shear wave dip appearing in the depolarized Rayleigh spectrum in benzonitrile has been studied as a function of concentration and temperature. The solution study was carried out at constant viscosity equal to the viscosity of liquid benzonitrile at each temperature. The result indicates that the presence of shear wave fine structure does not depend on the collective orientational fluctuations. The orientational and vibrational relaxation times of benzonitrile were measured at various concentrations and temperatures. The orientational relaxation times show no concentration dependence at any temperature, suggesting that the pair correlation is negligible at all concentrations. The orientational relaxation …

Light Scattering Studies Of Rotational And Vibrational Relaxations Of Acetonitrile In Carbon Tetrachloride, Scott L. Whittenburg, C. H. Wang

Chemistry and Biochemistry Faculty Publications

The rotational and vibrational relaxation times of acetonitrile–carbon tetrachloride solutions were investigated as a function of concentration, viscosity, and temperature using depolarized Rayleigh and Raman scattering. Using a Fabry‐Perot interferometer and single frequency laser source, we have shown that reliable results for the single particle orientational correlation times (τ_s) for CH₃CN can be obtained by carrying out a concentration dependent depolarized Rayleigh scattering study. Raman scattering was shown to yield inconsistent results for τ_s in CH₃CN. At constant viscosity, it was found that the Rayleigh scatteringrelaxation time (τ_Ray) of CH_{3 …}

Charge Transfer Photochemistry Of Some Chromium (Iii) Complexes, Yohn Sik Kang

Chemistry and Chemical Biology ETDs

The photolyses of a series of chromium(III) complexes Cr(en)3 3+, Cr(den)2 3+, Cr(tn)3 3+, and Cr(pn)3 3+, where en= ethylenediamine, den= diethylenetriamine, tn = trimethylenediamine, and pn = propylenediamine, have been investigated. Experiments were carried out on unbuffered and buffered (pH= 2.00) solutions containing 10^-3 – 10^-2 M chromium(III) complexes at room temperature and 10°C. While purging with argon or oxygen, the irradiation was performed with 184.9-253.7 nm u.v. light, corresponding to the charge transfer bands of the complex.

Chromium(Iii) Tartrates, Gerald Lynn Robbins

Chemistry and Chemical Biology ETDs

The binuclear tartrate-bridged complexes [Cr₂ (tartH)₂ (L)₂] and Na[Cr₂ (tart) (tartH) (L)₂]("tart" = C₄H₂O₆^4-, "tartH" = C₄H₃O₆^3- and "L"= 1,10-phenanthroline or 2,2'-bipyridyl) have been synthesized where each complex contains either two optically active or two meso bridging ligands. A discussion of the number of isomers and symmetries of these complexes is presented, as well as a complete description of the syntheses of the complexes and their sodium salts. Steric constraints force the octahedral coordination geometry for the dimer containing two …

The Dependence Of The Apparent Pk Of Ion Exchange Celluloses Of Ionic Strength, Paul Cyril Gillespie

Theses and Dissertations

Diethylaminoethyl cellulose was titrated with acid and base in various concentrations of NaCl. The pK values were determined from titration curves using a graphical technique. Two titratable groups were observed from the acid titration curve, a major and a minor group. The minor group, which represented 20% of the acid titration, was barely detectable in the base titration curve and had a salt-independent pK of 6.0. The pK of the major group was strongly salt-dependent and was approximately a linear function of log N NaCl. An equilibrium shift caused by the counter ion may explain the salt dependence. Hydrogen bonding …

Intermolecular Potential Surfaces From Electron Gas Methods. Ii. Angle And Distance Dependence Of The A’ And A” Ar–No(X^2ii) Interactions, Glen C. Nielson, Gregory A. Parker, Russell T. Pack

Faculty Publications

Angle dependent intermolecular potential energy surfaces for the two states (2A’ and 2A”) that arise from the interaction of ground (X^2II) state NO with Ar are calculated using the electron gas model to obtain the short range interactions. The average and difference of the two interaction energies are fit to analytic forms convenient for use in scattering calculations and joined smoothly onto the long range van der Waals potential previously determined. The results, which appear to be of useful accuracy, and the applicability of the electron gas model to such open shell–closed shell interactions are discussed.

Biological And Chemical Evaluation Of The Aquatic Environment Of Selected Undeveloped Kentucky Lake Embayments, Marshall Gordon, Morgan E. Sisk

KWRRI Research Reports

This report describes research involving biological and chemical analysis of two undeveloped embayments on Kentucky Lake, namely Anderson and Vickers Bays. Field and laboratory studies were made to assess current biotic standing crops, limnological conditions, levels of inorganic and organic pollutants in the embayments.

A Review Of The Limnology Of And Water Quality Standards For Lake Mead, Charles R. Goldman

Publications (WR)

1. The waters of Las Vegas Bay, a heavily utilized recreational resource, receive discharges from a variety of municipal and industrial waste sources. The U.S. Environmental Protection Agency has determined, on the basis of numerous studies, that the present water quality violates state and federal standards and constitutes a public nuisance. Consultants have advised the Sewage and Wastewater Advisory Committee that rapid abatement of the alleged pollution conditions can be achieved by an advanced wastewater treatment (AWT) plant.

2. The major problems in Las Vegas Bay are an objectionable water color, excessive turbidity, noxious odors, and oxygen depletion in certain …

Effect Of Glycosylation On The In Vivo Circulating Half-Life Of Ribonuclease, John W. Baynes, Finn Wold

Faculty Publications

The circulating half-lives of the four isozymes of bovine pancreatic ribonuclease (RNases A, B, C, and D) have been determined in normal and in nephrectomized rats. The isozymes differ only in their glycosyl content. While A contains no sugars, B has a simple oligosaccharide (GlcNAc, Man,+), and C and D each have a complex oligosaccharide (GlcNAc, Man,., Gal, Fuc NeuAc%, and GlcNAc, Mans Gal, Fuc NeuAc,, respectively) attached to Asn-34 of the polypeptide chain. All four isozymes were cleared rapidly in normal rats (t,,, = 2 to 3 min), as expected on the basis of the established role of the …

A Comparison Of The Rough Sphere Rotational Diffusion Model With Experimental Results For Liquid Methyl Iodide, Dane R. Jones, Scott L. Whittenburg, C. H. Wang

Chemistry and Biochemistry Faculty Publications

No abstract available.

18th Annual Rocky Mountain Spectroscopy Conference

Rocky Mountain Conference on Magnetic Resonance

Final program and abstracts from the 18th annual meeting of the Rocky Mountain Spectroscopy Conference, sponsored by the Rocky Mountain Section of the Society for Applied Spectroscopy. Held in Denver, Colorado, August 2-3, 1976.

An Fe (Iii) - Initiated Oxidase Reaction With Ferroxidase-Ii, Glenn Alexander Hegamyer

Master's Theses

A reaction involving iron as an intermediary electron carrier for the coupling of electron transfer from an endogenous substrate to ferroxidase-I has been proposed.

The enzymic nature of the reacti on has been established and studies with iron chelating agents have demonstrated the involvement of Fe(III). The kinetic parameters of ferroxidase-11 with Fe (lll) were found to be quite similar to those previously established for Fe(Il). The participation by the copper associated with ferroxi dase-11 was ascertained by use of the copper chelating agent, diethyl -di thio-carbamate .

A variety of substances normally found in blood were surveyed as possible …

Esr Study Of Free Radicals In Irradiated Single Crystals Of Potassium Hydroxylamine Disulfonate, B. J. Wilson, Robert W. Holmberg

Faculty Publications

Two free radicals formed when single crystals of potassium hydroxylamine disulfonate are irradiated with gamma rays at 77degrees K were studied by ESR. The ESR spectra result from a predominant center (radical A) exhibiting large 14N and 1H hyperfine splittings and from lesser amounts of Fremy's radical [O-dotN(SO3)2-2]. The g and hyperfine tensors of these radicals have been evaluated and are discussed. Radical A, whose identity remains in doubt, may be regarded as the precursor to Fremy's radical; on warming its lines decay and those of Fremy's radical are formed. Lines from radical A decrease in strength and those of …

The Addition Of Sf5br To Unsaturated Systems, Qui-Chee Wendy Wang

Dissertations and Theses

Addition reactions of pentafluorosulfur bromide with unsaturated substrates were studied and four new compounds containing the pentafluorosulfur group have been prepared.

The mechanism for these reactions seems to involve a radical addition pathway. In reaction with CH₂=CFC1, CF₃C≡CH and CH₃C≡CH the SF₅ radical attacks the carbon atoms carrying the most hydrogens. The reaction with CF₂=CHCl is interesting, as by analogy with other fluoroolefins, the SF₅ primary attack should occur.at the CHCl group, however, SF₅CF₂CHC1Br was found as the only product for this reaction. The reaction of …

Bulletin No 3993 - The Control Of Saffron Thistle, G. A. Pearce

Bulletins - 3000 - 3999

Saffron thistle is a primary noxious weed and is widespread throughout the drier parts of Western Australia. When growing in pasture its prickly growth habit discourages animals from grazing amongst it so that its presence results in the loss of feed. In crops it reduces yield and results in dockage when seed is found in harvested grain.

The Synthesis Of Analogs Of Toxoflavin And Fervenulin As Potential Antimetabolites, Bernadette Kuo Billings

Theses and Dissertations

The synthesis of analogs of toxoflavin: 1,3,4,6-tetramethyl-1,5,6, 7-tetrahydropyrimido[4,5-c]-5,7-pyridazinedione; 1,6-dimethyl-3,4-diphenyl-1,5,6,7-tetrahydropyrimido[4,5-c]-5,7-pyridazinedione; 3,5,7-trimethyl-8-phenyl-2,3,4,8-tetrahydropyrido[2,3-d]-2,4-pyrimidinedione are discussed. The synthesis of analogs of fervenulin: 3,4,6-trimethyl-5,6,7,8-tetrahydropyrimido[4,5-c]-5,7-pyridazinedione; 6-methyl-3,4-diphenyl-5,6,7,8-tetrahydropyrimido[4,5-c]-5,7-pyridazinedione; 2-hydroxy-3,5,7-trimethyl-4(3H)pyrido[2,3-d]-2,4-pyrimidinone are discussed. Several intermediates have been prepared: 6 -methylamino-3-methyluracil by a new method; 6-n-propylamino-3-methyluracil: 6-n-butylamino-3-methyluracil and 3-ethyl-2-ethylthio-2-hydroxy-4(3H)pyrimidinone.

Reactions Of N-Ethoxycarbonylthioamides With Dinucleophilic Reagents, Babu George

Chemistry and Chemical Biology ETDs

When an N-ethoxycarbonylthioamide is treated with dinucleophilic reagents containing a primary or secondary amino group and another nucleophilic group, reaction occurs initially between the amino group of the reagent and the thiocarbonyl of the substrate with elimination of hydrogen sulfide and formation of a carbon, nitrogen double bond. The intermediate thus formed may subsequently cyclize in either of two different manners depending upon the relative positions of the two nucleophilic groups in the reagent. A. If the second nucleophilic group is adjacent to the amino group, or separated from it by one carbon atom, cyclization involves nucleophilic attack at the …

Van Der Waals Interactions Of Ii-State Linear Molecules With Atoms. C6 For No(X 2Π) Interactions, Glen C. Nielson, Gregory A. Parker, Russell T. Pack

Faculty Publications

Formulas are derived for the van der Waals Cn coefficients for the interaction of a diatomic molecule in a II electronic state with an S-state atom. Two triatomic states arise from the degenerate IIstate. The average of the two energies has the usual Legendre polynomial (PL) angular dependence, but the difference in energies of the two states is shown to have associated Legendre polynomial (PML with M=2) angular dependence. Procedures for including spin orbit coupling are included, and the extension to interactions of Delta- and Phi-state molecules is discussed. Values of the spherical part of the C6 coefficients for the …

Van Der Waals Interactions Of Carbon Monoxide, Gregory A. Parker, Russell T. Pack

Faculty Publications

Pade approximant methods and experimental frequency dependent polarizabilities are used to calculate reliable van der Waals C6 coefficients for the interaction of CO with He, Ne, Ar, Kr, Xe, H, Li, Na, K, Rb, Cs, H2, N2, O2, CO2, and CO. Error bounds are given for the C6 coefficients and for the CO oscillator strength sums.

Syntheses Directed Toward The Construction Of 1-Deaza-1-Thialysergic Acid, Nicholas Richards Beller

Chemistry and Chemical Biology ETDs

With the goal of synthesizing 1-deaza-1-thialysergic acid (31), a series of substituted 2-stilbazole precursors of 31 was prepared.

313, R₁=SCH₃, R₂=H

314, R₁=SOCH₃, R₂=H

315, R₁=SO₂CH₃, R₂=H

173, R₁=H, R₂=COOC₂H₅

152, R₁ =SCH₃, R₂=COOC₂H₅

162, R₁=SOCH₃, R₂=COOC₂H₅

153, R₁=SO₂CH₃, R₂=COOC₂H₅

In connection with the synthesis …

Comment On ''Inelastic Scattering In Atom-Diatomic Molecule Collisions. I. Rotational Transitions In The Sudden Approximation'', Russell T. Pack

Faculty Publications

It is argued that conflicting approximations in a recent paper [J. R. Stallcop, J. Chem. Phys. 61, 5085 (1974)] render the resulting theory invalid.

Experimental Testing Program In Elementary Chemistry: A Preliminary Report, Billie G. Broach, Howard L. Hodges

Journal of the Arkansas Academy of Science

An experimental testing program is described which utilizes questions that are partly computer composed, in addition to a section composed by the instructor, and a retesting option to the student. Results from a trial of the program for one term indicate that (1) course grades were improved, (2) the student withdrawal failure rate was unaffected, and (3) the employed students took greater advantage of the retest than did the unemployed students.

The Synthesis Of Some Potential Antimalarials : The 3-(4- Choloropheny1) -5, 7- Dichloronaphthylaminoalcohols, Dwight Allen Shamblee

Master's Theses

A new scheme is presented for the preparation of 3~(4-chlorophenyl)-5,7-dichloro-l-methylnaphthalene, from which, four derivatives, 3~(4-chlorophenyl)-~-di(n-butyl)aminomethyl~5,7-dichloro-l-naphthalene-methanol hydrochloride, 3-(4-chlorophenyl)-5,7-dichloro-~-(2-piperidyl)-1-naphthalenemethanol acetate, l-[3-(4-chlorophenyl)-5,77dichloro-lnaphthyl]-3-di(n-butyl)aminopropanol hydrochloride, and 1-[3-(4-chlorophenyl)-5, 7-dichloro-l-naph,thyl]-2-(2-piperidyl) ethanol hydrochloride, were prepared. These four derivatives were submitted to Walter Reed Army Institute of Research for. the determination of their potential as antimalarial agents.

Interactive Pace Approach To Learning In Physics : Method And Materials, Mario Amézquita

University of the Pacific Theses and Dissertations

This study has the following general objectives: first, to present in detail the techniques that the author has developed and used in designed the course and the final materials produced for am introductory physics course in Mechanics; second, to state and examine the important blended ingredients used to get a new strategy for teaching-learning in which and individualized pace together with a group interaction is used; third, to analyze a combination of structural and operational course where concept, structure formation, and problem solving are emphasized.