Physical Sciences and Mathematics Commons^™

Nmr Instrumentation With Solid State Devices, Syed M. Ahmed

Masters Theses

No abstract provided.

A Feasibility Study Concerning The Use Of Alternate Energy Sources In Taiwan, Li-Juan Lee

Masters Theses

No abstract provided.

Paleoecology Of The Spiriferid Brachiopods Of The Silica Shale Formation (Middle Devonian), S.E. Michigan And N.W. Ohio, Darioush T. Ghahremani

Masters Theses

Spiriferid brachiopods of the Middle Devonian Silica Formation in northwestern Ohio and southeastern Michigan show many Features that are useful For paleoecologic interpretation. This study is undertaken to examine and interpret the paleoecology and paleobiology of six spiriferid brachiopods Mucrospirifer prolificus, Mucrospirifer grabaui, Mucrospirifer profundus, Mucrospirifer mucronatus, Paraspirifer bownockeri and Spinocyrtia euryteines. All are very abundant and can be easily collected from quarries in the Silica Formation near Sylvania, Ohio.

Fourteen different morphologic characteristics have been tabulated for all specimens used in this study. These characteristics allow interpretations of the ontogenetic de velopment and ecologic relationships of the six studied …

Structural Effects On Micellar Catalyzed Reaction Of Hydroxamic Acids, Nop Utrapiromsuk

Masters Theses

Introduction

For many years scientists have tried to find a model which resembles a biological system, so that they can use this model for studying biological systems in human and in living organisms. Micelle systems provide the environment to mimic enzyme systems to some degree.¹

Soaps and detergents generate micelles. Soaps and detergents have been used as cleansing agents for a long time. Their cleansing properties are related to micelle formation. Actually, soap is simply a mixture of sodium salts of long chain fatty acids, R-COO^- Na⁺, and some detergents are general sodium salts of straight …

The Effects Of Electron-Donating And Electron-Withdrawing Groups On The Alkylation Sites Of Para-Substituted Phenylacetones, Abraham L. Faburada

Masters Theses

The dianions of phenylacetone and its para-substituted derivatives were generated using potassium hydride and n-butyl lithium in tetrahydrofuran. Methyl, ethyl, and n-butyl iodides were used to alkylate the dianions. The results of alkulation indicated that C₁ is preferentially attacked by the less active ethyl and n-butyl iodides. The results further show that terminal alkylation is enhanced by electron-donating groups at the para-position of the phenyl ring. The results are rationalized in terms of the difference in electron density at C₁ and at C₃ in the dianion, on the basis of resonance theory. The regio-selectivity of alkylation as …

The Unexpected Preferential Formation Of 1-Alkyl-1-Phenyl-2–Propanones On Monoalkylation Of The 1-Phenyl-2-Propanone Dianion, Jack M. Hinkley

Masters Theses

No abstract provided.

The Analysis Of N-Methylscopolamine Bromide By High Speed Ion Pair Partition Chromatography, John L. Nappier

Masters Theses

No abstract provided.

The Response Of The Micro-Adsorption Detector To Inorganic Anions, Maria E. Munera

Masters Theses

No abstract provided.

Structural Analysis Of The Great Smoky Thrust Sheet Along The Little Tennessee River, John E. Livingston

Masters Theses

This study involves a structural analysis of a portion of the Great Smoky thrust sheet in the Great Smoky Mountains of Tennessee. Four groups of folds and related structures have been identified in this area. the earliest folds include second-order mesoscopic F1 folds with a slaty cleavage axial plane foliation (S1). These folds occur on the limbs of first-order macroscopic F1 folds which are discordant to the Great Smoky fault. In several places, the F1 folds are overprinted by mesoscopic F2 folds which are characterized by crenulation cleavage axial plane foliation (S2). F2 folds include tight to isoclinal folds with …

Shallow Water High-Magnesium Calcite Mud Production And Dispersal, St. Croix, U.S. Virgin Islands, Jonathan A. Fuller

Masters Theses

Boiler Bay, on the northeast coast of St. Croix, is 200 m wide, 800 m long, and about 3-5 m. deep. The hay is separated from the open Caribbean by a barrier reef. Winds from the east drive currents westward across a narrow carbonate platform (where they entrain platform-derived carbonate mud) and into the east end of the bay. Longshore currents continue westward through the bay, and the entrained platform- derived suspended load is combined with bay-produced carbonate mud and swept northwestward off the platform after passing through a 6 km complex of bays along the northeastern shore. The suspended …

Theoretical Thermodynamic Functions For Krypton Gas, A-Hamid Aidinejad

Masters Theses

No abstract provided.

Generalization Of The Form Of The T Matrix Operator Of Non-Relativistic Scattering Theory, Francis Leone

Masters Theses

No abstract provided.

The Synthesis And Characterization Of Several Copper (Ii) Complexes Of Quinuclidinone-Containing Ligands. Possible Models For Type I Copper Blue Proteins., Victor Thomas Wilcox

Masters Theses

Several copper (II) complexes with bidentate quinuclidinone containing ligands have been synthesized and characterized. These complexes appear to be possible models for the type I copper (II) in the copper "blue" proteins. The spectral and magnetic properties indicate that the complexes have a pseudo tetrahedral microsymrnetry about the central metal ion. The complexes contain chromophores of the following forms: CuN₄, CuN₂O₂, and CuN₂x₂, where X is either Cl or Br. While the spectra of these complexes lack the intense 17,000 cm^-1 band typical of copper "blue" proteins, the optical …

Landsat Image Analysis Of Linears And Lineaments In The Tri-State District, Missouri-Oklahoma-Kansas, Solomon Hartley Toweh

Masters Theses

"Lineations within the Tri-State mining district are classified as megalineaments, lineaments and linears, based on length. One megalineament, 120 lineaments and 205 linears are identified on the LANDSAT imagery. In order of importance a dominant northeast set, northwest set, north-south set and east-west set are recognized. These range from 0.8 miles (1.3 km) to 68 miles (109.4 km) in length.

Major lineation trends spatially relate with trends of mined areas In the Picher field both northeast and northwest lineations generally parallel mined areas. In the Galena field ore and lineations trend northeast while in the Joplin and Duenweg-Webb City-Oronogo field …

Sedimentology Of The Hannibal Formation In Northeastern Missouri And Western Illinois, Michael Harry Deming

Masters Theses

"The Hannibal Formation (Kinderhookian) occurring in northeastern Missouri and western Illinois is a fine-grained, terrigenous, sedimentary unit which can be divided into an upper and a lower portion, based on lithology. The upper portion consists of alternating coarse and argillaceous, fine siltstone units, while the lower portion consists of a silty mudstone with an occasional thin siltstone unit. At the extreme western margin of the formation, near where the Hannibal almost pinches out, the formation consists entirely of a silty claystone. Extending southward along the study area, the coarse siltstone units of the upper Hannibal become thinner, and eventually pinch …

The Effects Of Sulphur Dioxide On Selected Hepatics, Steven L. Gatchel

Masters Theses

Extensive studies have been reported on the air pollutant sulphur dioxide (SO₂), and its effects on vascular and nonvascular plants. It has been shown to interrupt normal physiology, metabolism, reproduction, and alter the plant’s morphology.

Of the cryptogams, lichens have been extensively used as biological indicators of air pollution. More recently, bryophytes have been shown to be as sensitive to contaminates as lichens, and may exhibit responses to the pollutant similar to those of vascular and nonvascular plants. The threshold sensitivity of these cryptogams is about 0.5 ppm over a 12 hour period. However no study to date …

Cost-Effectiveness Of Air Pollution Control In Illinois, 1970-1976, Timothy E. Sullivan

Masters Theses

No abstract provided.

Amperometric Determination Of Chemical Oxygen Demand, Catherine Eckert Hutchins

Masters Theses

A method is described for measuring the low level --5 to 50 ppm-- chemical oxygen demand (COD) of water samples by amperometric titration. The method involves digestion of the sample with potassium dichromate in a 50% sulfuric acid solution using one-fifth the reagents and sample required for the standard COD method. This is followed by an amperometric titration using a standard ferrous ammonium sulfate solution and employing a rotating platinum electrode in a three-electrode potentiostatic system. The titration is carried out at a potential of +0.80 volts versus a saturated calomel electrode, thus eliminating the need for O₂ purging …

Ergosterol Effect On The Desaturation Of 14c-Cis-Vaccenate In Tetrahymena, Tiee-Chyau Miin

Masters Theses

Supplement of ergosterol to the growth medium of the ciliated protozoan Tetrahymena pyriformis W leads to incorporation of the foreign sterol within cell membranes and suppression of synthesis of the native sterol-like compound tetrahymanol, as well as to changes in the fatty acid compositions of several major classes of membrane lipid. Alteration of fatty acid composition is thought to represent a regulatory mechanism whereby optimum membrane fluidity is maintained when the slightly dissimilar foreign sterol is added into the phospholipid bilayer of the membranes.

The present study, using several different conditions of growth temperature, substrate concentrations and incubation time, and …

Thermodynamics Of Ion Association In Aqueous Solutions Of Sodium Sulfate, Sodium Carbonate And Sodium Bicarbonate, Yan-Chun Chung

Masters Theses

Stoichiometric association constants of NaSO₄^-, NaCO₃^- and NaHCO₃^- ion-pairs were determined over the temperature range 10 - 40°C at several ionic strengths by using a sodium ion selective electrode. At zero ionic strength values for K°_A,NaSO₄^- are 15.8 ± .4, 8.5 ± .2 and 4.6 ± .3 at 10°, 25° and 40°C, respectively; like values for K°_A,NaCO₃^- are 17.1 ± 1.4, 19.1 ± .6 and 21.0 ± .7. Values for K°_A,NaHCO₃° are 3.35 ± .07 and 6.75 ± .02 at 25°C …

Ditertiary Phosphines As Monodentate Ligands In Transition Metal Carbonyl Complexes, Yih-Yau York Sun

Masters Theses

Carbonyl complexes of chromium, molybdenum and tungsten have been synthesized in which two potentially chelating tetraphenyldiphosphinoethane molecules (Ph₂PCH₂CH₂PPh₂) are bound as monodentate ligands. The reaction of trans-(CO)₄M(PPh₂CH=CH₂)₂ (M = Cr, Mo, W) with diphenylphosphine (PPh₂H) in the presence of potassium t-butoxide yields trans-(CO)₄M(PPh₂CH₂CH₂PPh₂)₂. The complexes, which represent the first of this type to be synthesized, have been characterized by ³¹P nmr. From the XAA'X' phosphorus-31 spectra of the …