Physical Sciences and Mathematics Commons^™

A Study Of Isospin Mixing In 16O Near 18 Mev Exitation Energy, Li-Yun Kuo

Masters Theses

No abstract provided.

Average Solid Angle For Detection Of Photon Pair Positron Annihilations, Albert S. Ferrari

Masters Theses

No abstract provided.

The Response Of The Micro-Adsorption Detector To Inorganic Cations, David P. Mckay

Masters Theses

No abstract provided.

Energy Calibration Of The Western Michigan University Model En Tandem Accelerator, Michael Joseph Parrott

Masters Theses

No abstract provided.

Elastic Scattering Of Alpha Particles From 12C, Hsi-Chiu Liu

Masters Theses

No abstract provided.

Lower Bounds In The Stekloff Problem, Shrikant Narayan Rao

Masters Theses

No abstract provided.

Construction Of A Small Vacuum Ultraviolet Spectrograph, Dale A. Eding

Masters Theses

No abstract provided.

The *S-Product Of Arithmetic Functions, Kathryn Diane Kopec

Masters Theses

No abstract provided.

Hydrostatic Pressure Effects On The Epr Spectrum Of V2+:Al203, Jonathan Lloyd Albain

Masters Theses

No abstract provided.

Lorentz-Invariant And Lorentz-Noninvariant Approximation Techniques In The Spin-Parity Analysis Of Four-Pion Resonances, Wilson C. Lu

Masters Theses

No abstract provided.

Mass Fraction And The Isotopic Anomalies Of Xenon And Krypton In Ordinary Chondrites, Edward W. Hennecke

Masters Theses

"The abundance and isotopic composition of all noble gases are reported in the Wellman chondrite, and the abundance and isotopic composition of xenon and krypton are reported in the gases released by stepwise heating of the Tell and Scurry chondrites. Major changes in the isotopic composition of xenon result from the presence of radiogenic Xe¹²⁹ and from isotopic mass fractionation. The isotopic composition of trapped krypton in the different temperature fractions of the Tell and Scurry chondrites also shows the effect of isotopic fractionation, and there is a covariance in the isotopic composition of xenon with krypton in the manner …

Thermal Expansivity And Refractive Index Determinations For Some Hydrosol Systems And Their Similarity To Properties Ascribed To "Anomalous" Water, Gerald Wayne Chappue

Masters Theses

"The characteristic thermal expansion and refractive index of aqueous dispersions of SiO₂ and NaOH were determined for samples contained in quartz micro-capillaries. Comparison is made with the expansivity and refractive properties of anomalous water or polywater as reported by other investigators. The similarity between the properties and behavior of various hydrosol systems and those ascribed to anomalous water is cited as a serious challenge to the hypothesized existence of an allotropic modification of water"--Abstract, page ii.

The Halogen And Uranium Content Of Sedimentary Rocks, Tektites, Impact Glasses, And Obsidians, Victor J. Becker Jr.

Masters Theses

"The iodine and uranium concentrations in sedimentary rocks were measured by irradiating the samples in a neutron flux, radiochemically separating iodine, and ß-counting the resulting activity. The values obtained for uranium are in good agreement with previous estimates of the uranium content in sedimentary rocks. The values obtained for iodine define a distribution pattern similar to that reported for chlorine and bromine, in contrast with the distribution pattern previously reported for iodine in sedimentary rocks. The concentrations of chlorine, bromine, iodine and uranium were determined in tektites, obsidians and impact glasses by neutron activation. The uranium content found in tektites …

Distribution, Petrology, And Environment Of The St. Louis-Ste. Genevieve Transition Zone In Missouri, Donald Howerton Fielding

Masters Theses

"In eastern Missouri, southeastern Iowa, and western Illinois - a transition zone, a body of rock consisting of several lithosomes which has a geographic extent measured in scores to hundreds of miles and which lies between a single overlying formation and a single underlying formation and which has lithologic and/or paleontologic properties common to both the overlying and the underlying formations, was found to exist between the St. Louis and the Ste. Genevieve formations. This transition zone is called the St. Louis-Ste. Genevieve Transition Zone, and is shown to possibly be due to continuous deposition between these two times and …

Inclusion Theorems For Boundary Value Problems For Delay Differential Equations, Leon M. Hall

Masters Theses

"In this thesis existence and uniqueness of solutions to certain second and third order boundary value problems for delay differential equations is established. Sequences of upper and lower solutions similar to those used by Kovač and Savčenko are defined by means of an integral operator, and conditions are given under which these sequences converge monotonically from above and below to the unique solution of the problem. Some numerical examples for the second order case are presented. Existence and uniqueness is also proved for the case where the delay is a function of the solution as well as the independent variable"--Abstract, …

Freshwater Losses To The Sea And Water Level Decline In Northwest Libya, Mohammed Ahmed Attiga

Masters Theses

"The area studied in this investigation, located in Tripolitania, Libya, between 13º and 16º east longitude and 31º and 33º north latitude, covers about 42,000 square kilometers. It is divided topographically into two parts. They are the coastal zone to the north and the Jebel (plateau) zone to the south. Some wadis which rise in the Jebel drain northward across the area to the sea. The temperature in the area ranges from 5ºC to 19ºC in the winter and from 19ºC to 40ºC in the summer. Precipitation in the area ranges from 380 millimeters to less than 100 millimeters. The …

A Kinetic Study Of The Reductive Abilities Of Four Polyaminocarboxylic Acids (Edta, Cdta, Dtpa And Nta) Towards Cerium(Iv) In Perchloric Acid Media, Salem Ahmed Attiga

Masters Theses

"The reduction of Ce(IV) in HC10₄ solutions by four polyaminocarboxylic acids, which are commonly used as chelating agents, has been studied by the stopped-flow technique. The rates of reduction first increase with increasing acidity, reach maxima which are characteristic of the chelating agent and the medium, then progressively decrease with increasing the acid concentration in the media. At their maximum reactivities, trans-1,2-diaminocyclohexane tetraacetic acid (CDTA) shows the highest reductive ability; this is followed by ethylenedinitrilotetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), and finally nitrilotriacetic acid (NTA). The observed maxima can be qualitatively explained in terms of a mechanism which involves unhydrolyzed …

A Comparative Limnological Study Of Three East Central Illinois Farm Ponds, Charles W. Furrey

Masters Theses

A comparative limnological study was conducted at three east central Illinois farm ponds between March 15 and September 18, 1970, to determine the incidence of nitrogen and phosphorus in the ponds resulting from agricultural sources. All ponds had corn, soybean, winter wheat cropping systems on their watersheds. Corn accounted for the greatest fertilizer application. One pond had significant numbers of livestock on its watershed that contributed high amounts of nitrogen and phosphorus to its waters. Limnological parameters measured at the surface, mid depth, and bottom of a ten foot water column in each pond were water temperature, dissolved oxygen, carbon …

Tungsten Carbonyl Complexes Containing Positively Charged Phosphorus Ligands, Dilip Poonamchand Shah

Masters Theses

Two positively charged complexes, (CO)₅WP(C₆H₅)₂CH₂CH₂-⁺P(C₆H₅)₂(CH₂C₆H₅) Br^- and (CO)₅W(C₆H₅)₂PCH₂⁺P(C₆H₅)₂CH₃ I^-, were synthesized, and their carbonyl stretching frequencies and force constants were compared to those of the uncharged complexes, (CO)₅WP(C₆H₅)₂CH₂CH₂P(C₆H₅)₂ and (CO)₅WP(C₆H₅) …

Studies In The Preparation Of Metal Enolates Of 3,3,5,5-Tetramethylcyclohexanone And Their Reactions With Lead(Iv) And Mercury(Ii) Acetates, Donald Robert Paveska

Masters Theses

No abstract provided.

Pleistocene Aquifers In Coles County, Illinois, James D. Hopkins

Masters Theses

No abstract provided.

Some Ecological Effects Of The Oil Industry On Farmland In East Central Illinois, Dale E. Fruendt

Masters Theses

Between June, 1970 and July, 1971 a two square mile area in East Central Illinois served as a study area for the effects of the oil industry on farm land. Observations were made on several farms concerning the activity of oil companies and interviews with farmers were held. Two areas of farmland were given special attention. One was a clover field where salt water had flooded a portion of the field. The other area was a corn field where oil had flooded approximately eight acres of land. Random samples of invertebrates were taken in both of these areas as well …

Comparison Of Diffusion Coefficients Measured Electrochemically And Non-Electrochemically, Terry Dick Rotsch

Masters Theses

Diffusion coefficients of Co(en)₃I₃⋅H₂O, FeCl₃, and K₃Fe(CN)₆ were measured using the methods of polarography, chronopotentiometry, and diaphragm cell for the purpose of determining any relationships which may exist between these values. A major objective of the present study was to relate diffusion coefficients obtained by a simple non-electrotrochemical method to diffusion coefficients used in electrochemical techniques.

It was found that the polarographically determined diffusion coefficients were all 1.04 times larger than the chronopotentiometric values. This constant factor is probably due to viscosity differences tn the polarographic and chronopotentiometric solutions …

Sediment Properties And Depositional Environment Of The Minnelusa Formation (Permo-Pennsylvanian), Northern Black Hills, South Dakota And Wyoming, El-Magtuf Taleb Taleb

Masters Theses

"Permo-Pennsylvanian sedimentary rocks of the Minnelusa Formation of the Black Hills uplift, South Dakota and Wyoming, can be divided into upper, middle and lower divisions on the basis of lithology. The upper portion of 150 to 200 feet consists of gray and yellow sandstone, with some carbonates and shales in some sections. The middle portion, about 200 to 220 feet thick consists of gray and red sandstone with carbonate members including the prominent dolomite member at the base; some of the carbonates are cherty. The lower portion, 20 to 60 feet thick, consists of pink sandstone, arenaceous dolomite and thin …

A Measurement Of The Capture Coefficient And Of The Vapor Pressure Of Co₂ From 69ºk To 80ºk, Michel Louis Chouarain

Masters Theses

"The capture coefficient of CO₂ gas at 135ºK on a surface of CO₂ at temperatures between 69ºK and 80ºK is measured by means of quartz crystal microbalances. The vapor pressure of CO₂ is measured in the same range of temperature"--Abstract, page ii.

Petrology And Petrography Of The Croweburg Coal, North-Central Missouri, William Keith Wedge

Masters Theses

"Under a grant from the National Air Pollution Control Administration, the Missouri Geological Survey undertook a core drilling program of coals in north-central Missouri. The chemical and petrographic characteristics of five complete samples of the Croweburg coal recovered from this drilling project are major contributions of this study. Detailed lithologic logs of the drill cores are an additional contribution of the investigation. Megascopic lithotypes of vitrain, fusain, clarain, and durain as well as areas of mineral matter are described from polished column samples of the Croweburg coal for the first time in Missouri. Measured Croweburg coal sections from five drill …

Dolomitized Pahasapa Limestone (Mississippian), Northeastern Sector Of The Black Hills, South Dakota, Petrography And Geological Setting, Abdullatif Najjar

Masters Theses

"The carbonates of the Mississippian Pahasapa Limestone in the northeastern sector of the Black Hills outcrops were examined in order to ascertain specific characters of the lithology in this area where the formation is predominantly a dolomite in contrast to adjacent areas where it is mainly a limestone. The Pahasapa seems to be uniform in thickness at the study areas and maintains a thickness of about 550 feet. Because of poor exposures, usually at the base or top, complete sections could not be measured. Much of the Pahasapa consists of coarsely crystalline dolomite containing varying proportions of crinoid plates, gastropods, …

Fossil Otoliths Of Some Lower Cenozoic Perciform Fishes Of The Gulf Coast, Mostafa Juma Salem

Masters Theses

"Nineteen perciform species from the lower Cenozoic and one Recent species are described, and included under eight genera. The main characters that were considered as generic are the outline of the sagitta and the structure of the sulcus. The other features of the otolith were regarded as secondary in importance. The characters that were believed to be valuable at specific level are almost the same as those for the genus but in more detail. These species are considered to be within the Suborder Percoidei. The fossil species of "Nemipterus" were put in the Family Nemipteridae as they resembled the Recent …

The Oxidative Decarboxylation Of Aminopolycarboxylic Acids With Cerium (Iv) In Sulfuric Acid, Rita Kathleen Hessley

Masters Theses

"The rates of oxidation of four chelating agents, NTA, EDTA CDTA, and DTPA with Ce(IV), in sulfuric acid media, were determined spectrophotometrically by a stopped-flow technique. The reductive ability is in the order CDTA>EDTA>DTPA>NTA. The influence of varying the acidity of the medium was studied, and in each case a maximum in the rate constant [H +] plot was observed. A possible interpretation of the reactivities and the influence of acidity is advanced"--Summary, page 1.

Ground Water Of The Uncompahgre Valley Montrose County, Colorado, Ted William Craig

Masters Theses

"Data from water quality tests of 50 wells and from general well information of 309 wells registered with the Colorado Division of Water Resources are presented for the area of Montrose County, Colorado, drained by the Uncompahgre River. This information, along with other pertinent information such as water laws and costs, is evaluated to determine the feasibility of increasing the use of ground water in the area. The drainage basin of the Uncompahgre River within the Montrose area bas three main geologic structures: the Uncompahgre uplift, the Montrose syncline, and the Gunnison uplift. All formations exposed in the area are …