Chemistry Commons^™

Second S.R. Romania-U.S.A. Seminar On Polymer Science, Otto Vogl, Viorica Dobrescu

Emeritus Faculty Author Gallery

No abstract provided.

Polymer Science And Technology In Universities In Sweden, Otto Vogl, Bengt Ranby

Emeritus Faculty Author Gallery

No abstract provided.

Heterocyclic Syntheses Utilizing Aryl Cyanates, Joseph Eugene Drumm

Masters Theses

No abstract provided.

Polymer Science And Technology In Universities In Sweden, Otto Vogl, Bengt Ranby

Otto Vogl

No abstract provided.

Second S.R. Romania-U.S.A. Seminar On Polymer Science, Otto Vogl, Viorica Dobrescu

Otto Vogl

No abstract provided.

The Application Of Multiderivative Infrared Spectroscopy To Iodine Number Determination, Jeffrey C. Lowry

Masters Theses

The Food and Drug Administration requires the disclosure of total unsaturation of commercial products as an indication of nutritional value. This unsaturation is a guide to the expected stability of food additives, such as edible oils and foods in which they are used. Unsaturation is typically evaluated as an iodine number, calculated for these additives based on their consumption of iodine through addition across the carbon-carbon double bonds. This titration method can typically take 45 minutes.

The investigation presented develops an alternative method for determining iodine numbers of some common oils using a computerized infrared spectophotometer. The analysis time, as …

Kinetics Of The Formation Of The Nickel(Ii) Complex With N, N' -Dimethylethylenediaminediacetic Acid And The Metal Exchange Reaction Between N,N'-Dimethylethylenediaminediacetatonickel(Ii) And Copper(Ii), Roger A. Karel

Masters Theses

The kinetics of the reaction of aquonickel (II) ion with N'N'-dimethlethylenediaminediacetic acid has been studied at 25°C and 0.1M iconic strength over a pH range of 6.0 to 9.3 using stopped-flow techniques. Formation reactions in all cases were first-order in Ni (II) and in ligand. The formation rate constant for the protonated and unprotonated species were evaluated and compared to their theoretical value. The rate-determining step is shown to be ring closure. A comparison of this system with other studies involving complexation of nickel (II) confirm the magnitude of the internal conjugate base effect and also shows a correlation between …

The Kinetics Of The Metal Exchange Reaction Between N-(2-Hydroxyethyl) Iminodiacetatonickelate (Il) And Copper(Ii), Craig R. Weed

Masters Theses

The reaction between copper(II) and N -(2-hydroxyethyl)iminodiacetatonickelate( II) (NiHEIDA) was studied between pH 4.0 and 5.6 over a 70 fold variation in copper concentration at an ionic strength of 1.25 and a temperature of 25° C. The reaction order in both NiHEIDA and Cu(U) is first. The reaction rate is pH sensitive and a hydrogen dependent pathway as w ell as copper dependent and copper and hydrogen independent pathways were found.

Evidence is given for a stepwise mechanism for the unwrapping of HEIDA from its nickel complex, follow ed by copper attack to give a dinuclear intermediate, which then breaks …

A Proposal To Fertilize The Overton Arm And Gregg Basin Areas Of Lake Mead, Larry J. Paulson

Publications (WR)

Several limnological studies have been conducted in Lake Mead during the past decade. The recent studies clearly show that most of Lake Mead is deficient in nutrients, especially phosphorus, and very low in productivity. The reservoir-wide average total phosphorus concentration for 1981 - 1982 was only 9 mg/m³. This is below levels found In most oligotrophic lakes and reservoirs. Algal biomass, as measured by chlorophyll-a, averaged only 1.5 mg/m³. That also places Lake Mead in the oligotrophic range. Transparency, as measured by a Secchi disc, averaged 9-5 m in Lake Mead during 1981-1982. That far exceeds …

Polymer Science In Academy Institutes In Northern China (North Of The Yangtze): Part Ii: Changchun, Otto Vogl, B. Huang

Emeritus Faculty Author Gallery

No abstract provided.

Iupac 6th International Symposium On Cationic Polymerization And Related Processes, Otto Vogl, Etienne Schacht

Emeritus Faculty Author Gallery

No abstract provided.

Iupac 6th International Symposium On Cationic Polymerization And Related Processes, Otto Vogl, Etienne Schacht

Otto Vogl

No abstract provided.

Polymer Science In Academy Institutes In Northern China (North Of The Yangtze): Part Ii: Changchun, Otto Vogl, B. Huang

Otto Vogl

No abstract provided.

Polymer Science And Engineering In Academy Institutes In The Northern Part Of The People's Republic Of China (North Of The Yangtze): Part I: Beijing", Otto Vogl, L. Shi

Emeritus Faculty Author Gallery

No abstract provided.

Theoretical Study Of Silylene Insertion Into N-H, O-H, F-H, P-H, S-H, And Cl-H Bonds, Krishnan Raghavachari, Jayaraman Chandrasekhar, Mark S. Gordon, Ken Dykema

Mark S. Gordon

The potential energy surfaces for the insertion reactions of silylene into NH3, Hp, HF, PH3, H2S, and HCl have been characterized in detail by using ab initio molecular orbital theory, including electron correlation and zero-point corrections. All the interactions involve the initial formation of a donor-acceptor complex followed by a proton shift via an unsymmetrical high-energy transition state. The binding energies of the complexes as well as the rearrangement barriers for the hydrogen migration of these complexes to give the normal valent compounds have been calculated in all cases. The complex between SiH2 and NH3 exists in a deep minimum …

Polymer Science And Engineering In Academy Institutes In The Northern Part Of The People's Republic Of China (North Of The Yangtze): Part I: Beijing", Otto Vogl, L. Shi

Otto Vogl

No abstract provided.

Expression Of Epstein-Barr Virus (Ebv) Dna And Cloned Dna Fragments In Human Lymphocytes Following Sendai Virus Envelope-Mediated Gene Transfer, David J. Volsky, Thomas Gross, Faruk Sinangil, Charles Kuszynski, Ronald Bartzatt, Timothy Dambaugh, Elliott Kieff

Chemistry Faculty Proceedings & Presentations

Purified EBV DNA and cloned DNA fragments were trapped in Sendai virus (SV) envelopes during envelope reconstitution. The DNA-loaded reconstituted envelopes (RSVE/DNA) served as gene-transfer vehicles using the capability of RSVE to fuse with normal and tumor cells. The efficiency of RSVE-mediated EBV DNA transfer into lymphoid tumor cells and fresh human lymphocytes was 5-10% of the enveloped 3H-labeled EcoRI fragment B of EBV DNA. Purified intracellular EBV (B95-8 strain) DNA induced EBV nuclear antigen (EBNA) in 0.2-1% of human lymphocytes, transiently stimulated cellular DNA synthesis, but did not fully transform cells. Cloned Sal I F1 fragment [approximately equal to …

Characterization Of Glycated Proteins By 13C Nmr Spectroscopy, Carolyn I. Neglia, Helga J. Cohen, Albert R. Garber, Suzanne R. Thorpe, John W. Baynes

Faculty Publications

13C NMR spectroscopy has been used to characterize Amadori (ketoamine) adducts formed by reaction of [2-13C]glucose with free amino groups of protein. The spectra of glycated proteins were acquired in phosphate buffer at pH 7.4 and were interpreted by reference to the spectra of model compounds, N alpha-formyl-N epsilon-fructose-lysine and glycated poly-L-lysine (GlcPLL). The anomeric carbon region of the spectrum (approximately 90-105 ppm) of glycated cytochrome c was superimposable on that of N alpha-formyl-N epsilon-fructose-lysine, and contained three peaks characteristic of the alpha- and beta-furanose and beta-pyranose anomers of Amadori adducts to peripheral lysine residues on protein (pK alpha approximately …

Polymer Science And Engineering In The Southern Part Of The People's Republic Of China (South Of The Yangtze): Part I: “Shanghai Area", Otto Vogl, T. Yu, B. Qian, S. J. Li

Emeritus Faculty Author Gallery

No abstract provided.

Ab Initio Study Of The Insertions Of Methylene And Silylene Into Methane, Silane, And Hydrogen, Mark S. Gordon, David R. Gano

Mark S. Gordon

The transition states for several insertion reactions have been determined at the 3-21G level of theory. While the insertions of CH2 and SiH2 into the CH and SiH bonds of methane and silane, respectively, all have nonzero SCF barriers, only the insertion of silylene into methane retains a nonzero barrier when third-order Moller-Plesset perturbation theory corrections are included with the 6-31G* basis set. The intrinsic reaction coordinates for the carbene and silylene insertions into methane are used to provide a pictorial view of these reactions and to relate the calculations to earlier studies. The insertion of silylene into H2 is …

Polymer Science And Engineering In The Southern Part Of The People's Republic Of China (South Of The Yangtze): Part I: “Shanghai Area", Otto Vogl, T. Yu, B. Qian, S. J. Li

Otto Vogl

No abstract provided.

Ftir Analysis Of Aviation Fuel Deposits, Larry S. Helmick, Gary T. Seng

Science and Mathematics Faculty Publications

Five modes of operat1on (absorpt1on, em1ssion, single reflectance, attenuated total reflectance, and photoacoust1c) of a N1colet 7199 Fourier Transform Infrared Spectrophotometer have been 1nvest1gated in order to determ1ne which modes were most su1table for qualitative analysis of jet fuel depos1ts. The absorption and emission modes were'found to be the most advan~ tageous for invest1gation of the bulk and surface propert1es of accelerated storage/thermal depos1ts where relat1vely large quantit1es of depos1t are generally ava1lable.

The general effects of fuel type, stress temperature, stress time, type of sp1k1ng agent, sp1k1ng agent concentration, fuel flow, and postdepos1t1onal treatment on the chem1cal nature of …

Evaluation Of Plasma Polymers Of Silanes As Adhesion Promoters For Organic Paint, Y. Matsuda, H. Yasuda

Chemistry Faculty Research & Creative Works

Plasma-polymerized coatings were prepared in a bell-jar-type reactor equipped with a magnetron system behind parallel aluminum electrodes using an a.c. source of frequency 10 kHz. Tetramethoxysilane, dimethyldimethoxysilane and hexamethyldisilane were used as monomers. Alkyd paint was coated on titanium plates onto which plasma polymer films had been deposited, to investigate the characteristics of the plasma-deposited films as adhesion promoters. The relationship between the adhesion strength for the paint and the conditions for the plasma polymerization was studied. The properties of the plasma polymers are dependent on the conditions of plasma polymerization manifested by two domains, namely the energy-deficient and the …

Preparation Of Gas Separation Membranes By Plasma Polymerization With Fluoro Compounds, H. Nomura, P. W. Kramer, H. Yasuda

Chemistry Faculty Research & Creative Works

Plasma polymerization coatings were applied for the preparation of gas separation membranes. Mainly fluoro compounds were used as coating materials. The membranes showed good separation characteristics with high flux for gaseous systems. The plasma polymerization composite parameter given by W/FM plays an important role in obtaining excellent separation characteristics. The correlation between the conversion rate DR/FM, where DR is the deposition rate of plasma polymer, and W/FM is useful to consider the plasma polymer character under the different plasma polymerization conditions (discharge power W and monomer flow rate F). The proper conditions for membrane preparation lie in the intermediate region …

26th Rocky Mountain Conference

Rocky Mountain Conference on Magnetic Resonance

Program and abstracts from the 26th annual meeting of the Rocky Mountain Conference, 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 7-8, 1984.

Centers Of Polymer Research; Polymer Science And Engineering In Academy Institutes In The Southern Part Of The People's Republic Of China (South Of The Yangtze), Otto Vogl, W. Huang, Z. Ye, Z. Zhang, M. Cao

Emeritus Faculty Author Gallery

No abstract provided.

Centers Of Polymer Research; Polymer Science And Engineering In Academy Institutes In The Southern Part Of The People's Republic Of China (South Of The Yangtze), Otto Vogl, W. Huang, Z. Ye, Z. Zhang, M. Cao

Otto Vogl

No abstract provided.

Aromatic Amine--Haloboranes : Evidence For Trigonal Boronium Cations, Debra H. Reid

Master's Theses

In the last twenty years Lewis adducts of boron trihalides and mixed boron trihalides have been examined using nuclear magnetic resonance spectroscopy. The donor to which the boron trihalide attaches has generally been some type of amine (strong donor), though oxygen, sulfur, phosphorous, and other donors ahve also been studied. The boron trihalide portion serves as the Lewis acid. Various nuclei (1H, 13C, 15N, 11B, 19F) have been examined in such boron trihalide adducts and the general trend in signal position in all 5 nuclei observed is (in order of increasing downfield shift) BF3

The acid strength of the boron …

Influence Of Crystal Fields On The Quasimetallic Reflection Spectra Of Crystals: Optical Spectra Of Polymorphs Of A Squarylium Dye, M. Tristani-Kendra, Craig J. Eckhardt

Craig J. Eckhardt Publications

The reflection and Kramers–Kronig absorption spectra have been obtained from the monoclinic and triclinic polymorphs of a squarylium dye, 2,4-bis(4-diethylamino-2-hydroxy phenyl) cyclobutadienediylium-1,3-diolate. The extremely different optical responses were found to arise from two molecular singlet transitions of essentially long axis polarization. Successful application of a four oscillator molecular exciton–polariton theory required the use of point charge densities rather than point dipoles in an extension of the theory which employed both interactions between the two singlets as well as a frequency dependent lattice damping. An intermolecular charge transfer transition is also assigned. The Journal of Chemical Physics is copyrighted by The …

Impact Of Several Chemical And Physical Properties Of Two H-Coal Recycle Solvent Streams On Their Relative Solvent Quality, Joe Collins

Masters Theses & Specialist Projects

The purpose of this study was to follow the solvent quality curve of the recycle solvent streams of the H-Coal Pilot Plant run by Ashland Petroleum Company at Catlettsburg, Kentucky. This was done with the use of a microautoclave (shaker-bomb liquefaction unit). Several physical and chemical properties of these recycle oils were determined, and these values were correlated with the observed solvent quality. It is shown that the relative, solvent quality of these recycle oils correlate well with many of the chemical and some of the physical properties determined in this study.