Physical Sciences and Mathematics Commons^™

Pressure Calibration To 100 Kbar Based On The Compression Of Nacl, R. N. Jeffrey, J. Dean Barnett, H. B. Vanfleet, H. Tracy Hall

Faculty Publications

An independent determination has been made of the transformation pressures assigned to the high-pressure transformations in Ba and Bi which are generally used for calibration points. The metals were imbedded in NaCl, and the transitions were detected by the resistance change of the metal while the NaCl lattice parameter was simultaneously measured by x-ray diffraction. The NaCl compression values determined at the fixed points were related to pressure by reference to the semiempirical compression curve of Decker. The Ba I-II and Bi III-V transformations at room temperature were assigned thermodynamic equilibrium values of 53.3 ±1.2 kbar and 73.8 ±1.3 kbar, …

A Survey Of The Applications Of Difference Equations, Roberta Lanice Harkey

Mathematics & Statistics ETDs

In asserting that people in other fields often tend to be afraid to use mathematics, F.K. Mechta, an economist, expressed an uncertainty which contributes to the hesitancy to use mathematics. “Mathematics is tricky, it maintains silence, does its work quietly; and when we do not understand its ways and misinterpret its message, it just smiles. It never loses its temper, never laughs; we can observe a suppressed smile on its lips. Such is mathematics.” It is the purpose of this paper to conduct a brief survey of the applications of difference equations. The use of these equations is often rather …

Liquid Scintillators. The Stability Of Organic Scintillator Solutes Toward Ultra-Violet Radiation. The Photooxidation Of 2, 5-Diphenyloxazole., Harold A. Mackay

Chemistry and Chemical Biology ETDs

An insight has been gained concerning the stability of organic scintillator solutes in toluene on exposure to ultraviolet light while in the presence of oxygen and water. Oxygen and water, from either solute or solvent, not only function as quenchers but may continue to react with the solute molecule via a photooxidation process. Removal of these materials from the 2, 5-diphenyloxazole toluene system resulted in a marked improvement in stability of the system on exposure to ultraviolet light. The choice of scintillator solute, in addition to water and oxygen, and the time of ultraviolet irradiation, has a pronounced effect on …

Angular Distribution Of Neutrons In Atmosphere Produced By Protons, Donald Stuart

Physics & Astronomy ETDs

In connection with the balloon flown directional neutron detector experiments in progress, the following theoretical problem presented itself. Find the angular distribution of neutrons incident upon a detector. This is investigated under varying conditions using a computor program prepared for this problem. Two models for the problem are considered in this paper. In the first model we choose the simplest conditions that approximate a possible physical situation. This consisted of considering that the system was completely isotropic. For certain altitudes this gave very good results as can be seen by the curves. Then modifications to the theory are discussed. This …

Geometrical Representations Of Relativistic Motion, Jeffrey H. Robbins

Physics & Astronomy ETDs

This investigation begins with the development of a transformation or mapping in velocity space of such a character that velocities are mapped into a quantity that adds linearly, while velocities add non-linearly according to the Einstein Law of Addition, and has no upper limit to its magnitude, i.e., when the speed of an object approaches that of light in a vacuum, this quantity becomes infinitely large. Kinematic relationships, in Newtonian form, for a particle undergoing acceleration, are developed in a frame of reference that remains attached to the particle using the new variable (W). It is found that relativistic energy …

Coulomb Excitation Of The Ytterbium Isotopes., John M. Palms

Physics & Astronomy ETDs

Coulomb excitation studies have been performed on the ytterbium isotopes 171, 172, 173, 174, and 176 using oxygen ions having energies up to 55 MeV. Resulting de-excitation gamma rays have been observed in particle coincidence with a NaI(Tl) detector and as single spectra with a Ge(Li) detector. The ground state rotational bands of the Yb171 and Yb173 isotopes have been excited to the 13/2- level. The 13/2- and 11/2-levels of both nuclei have not been reported before. In addition to the transitions from the ground state band, gamma rays were observed from Yb171 and Yb173 coming from other bands. A …

Investigation Of Propagation Of Light Through Gases And Air Structures Treated As Wave Guides., Richard W. Christiansen

Physics & Astronomy ETDs

The equations defining the propagation of electromagnetic radiation down cylindrical dielectric wave guides are developed. A Helium-Neon laser is used to illuminate several different cylindrical wave guides. The propagation nodes are recorded on photographic plates. Using the field equations, the electric field on a transverse plane is plotted and used to explain some HE_im modes observed. The patterns recorded on the photographic plates are described and discussed in terms of the propagation modes.

Statistical Section (June 1966), Central Bank Of Nigeria Cbn

Economic and Financial Review

This section of the EFR reports the statistics of the Central Bank of Nigeria (CBN) from 1960 to the first half 1966. This includes the Bank’s statement of assets and liabilities as well as its rediscount operations. Other sections include: currency in circulation, money supply, commercial banking activities, money and capital markets, public finance, national savings, external assets and international trade. The remaining sections include: Production (agricultural produce, mineral production), fuel and power, electricity generation and consumption.

Handbook Of Nebraska Trees: A Guide To The Native And Most Important Introduced Species (Revised 1951), Raymond J. Pool

School of Natural Resources: Faculty Publications

Nebraska is not to be classified as a forested state since less than 3 per cent of the area of the state is covered by natural timber. However our native forest trees are numerous as to different kinds and their distribution in the state is characterized by many interesting facts. The every-day life of our people is not so commonly associated with trees as is that of peoples in the more wooded states where lumbering and the wood-working industries are very important occupations because of the proximity of great forests of coniferous or broadleaved trees. The people of Nebraska use …

The Toluene-Aluminum Chloride-Hydrogen Chloride Complex, William Spencer Cassedy

Honors Theses

It was the aim of the project to: 1- Develop analytical techniques to determine the relative amounts of the aluminum chloride, hydrogen chloride, and toluene in the dark liquid catalyst. 2 - Determine the change in the relative amounts of aluminum chloride, hydrogen chloride, and toluene with time as the addition of hydrogen chloride was discontinued and the reaction mixture was left standing, prot cted fro moisture by a drying tube.

Synthesis Of 2--Aryl--Tetrahydro--3--Methyl--4--H--1,3--Thiazine--4--One--1,1--Dioxides And Chloromrthylation Of P--Dichloro-Benzene, Robert Nye Downer

Honors Theses

Extensive background material and experimentation on the synthesis of 2--aryl--tetrahydro--3--methyl--4--H--1,3--thiazine--4--one--1,1--dioxides and chloromrthylation of p--dichloro-benzene.

Attempted Rearrangement Of N-Nitrosolactams, Richard Albert Dybas

Honors Theses

This research was concerned with the preparation and subsequent atempted rearrangement of 5,8-dimenthyl-N-nitrosohydrocarbostyril (I).

Quiet-Mercury-Pool Voltammetry Of Copper In Aluminum Alloys, Winfield Scott Bigelow

Honors Theses

Several workers have demonstrated the analytical usefulness of the quiet-mercury-pool. Voltammetry at the QMP possesses a considerable advantage in sensitivity over "ordinary" polarography. Its demonstrated potentialities have prompted this study into the possibility of developing a technique, based on the quiet pool, for the routine determination of copper in aluminum alloys.

Tellurium (Vi): Polarography And Polyol Complexes, Peter T. Kissinger

Honors Theses

In 1782 the element tellurium was discovered by Baron Franz Joseph Miller Von Reichenstein. Muller first isolated the element from Transylvanian gold ore (2). Klaproth verified this work and in 1978 proposed that the substance be called tellurium. The etymology of the work begins with the Latin noun tellus, meaning earth. Students of Roman mythology will recall the ancient deity, Tellus, goddess of marriage and fertility. The history of the discovery of tellurium is a particularly interesting one. Serious students of the element will enjoy reading the account given by Mary Eliva Weeks (3, 4, 5). Telluric acid is a …

Basicity As A Function Of Water Concentration In Mixed Solvent, Dimethysulfoxide-Water Solution, Philip Mauro French

Honors Theses

The pH and pOH functions of, respectively, acid and base are meaningful measures of the acidity of dilute—i.e. up to about one Molar—solitons. Outside this range however, they are almost useless, and the establishment of other measure of acidity is necessary. Unfortunately, the results were far from conclusive, and, if anything opposed to the hypothesis. It seems safe to conclude that the use of aldehydes as an indicator series is prohibited in solution containing DMSO. Too many such indicators are totally barred from usage by its strong absorption below 260 mμ. Even those which were available for study yielded completely …

Cyclooctatrieneium Dicarbonium Ion, Carl George Seefried Jr.

Honors Theses

The peculiar group of chemical molecules termed aromatic have had particular significance in all fields of chemistry because of the unusual reactions they undergo. These reactions occur because of the additional stabilization energy that these molecules possess. This stability arises from the arrangement of delocalized π - electrons in the molecules.

A Study Of Sodium Phenylsiliconate, John Henry Daane

Honors Theses

The application of modern silicone chemistry knowledge and new analytical techniques to the elucidation of the structure of the hitherto uncharacterized, crystalline salt, sodium phenysiliconate, has been achieved. This salt, produced in 1914 by J. A. Meads and F. S. Kipping,. had been left structurally uncharacterized. This thesis builds upon the early work by applying to the problem the recent knowledge developed by J. F. Brown, Jr., and coworkers at the General Electric Research Laboratory.

Derivatives of the salt were made and characterized by a variety of analytical techniques. The silanols produced by the acidification of the sodium phenylsiliconate are …

A Donor Function For Methanolic Sodium Methanolic Sodium Methoxide Solutions, Edgar William Knaub

Honors Theses

A directly measured donor function was determined in .1 to 5 molar methanolic sodium methoxide solutions at 25 degree celsius using three of the substituted benzaldehyde indicators that were used by MacGregor to develop a donor function for aqueous alkalide hydroxide solutions.

Platinized Asbestos As A Fuel Cell Electrocatalyst, Howard Irwin Zeliger

Honors Theses

Platinized asbestos electrocatalysts were prepared by a variety of procedures. These catalysts were incorporated into test electrodes which were electrochemically evaluated in hydrogen - oxygen ambient temperature fuel cells. Catalysts were further scrutinized by the measurement of their specific platinum surface areas, and by the examination of electron micrographs of the materials. Fabrication procedure and composition of platinized asbestos containing electrodes were optimized, and fuel cell performances of electrodes containing the test catalysts were compared with the specific platinum surface areas of the catalysts.

The Kolbe Electrolysis Of Benzoic Acid, David Perry Beiter

Honors Theses

The synthesis of diphenyl from benzoic acid was accomplished by the Kolbe electrolysis. The complete inhibition, as found in aqueous solvents, was thus overcome by using the non-aqueous solvents, was thus overcome by using the non-aqueous mixture of pyridine and diethylamine. However, the yield was not sufficient to warrant consideration of the Kolbe electrolysis as a synthetic method, until improvements are made. Suggestions were offered for the possible increase in the yield of diphenyl. Should reasonably high yields be achieved, the method could be applied to the synthesis of substituted diphenyls.

Rapid Quantitative Analysis Of Basic Amino Acids By Ion Exchange Resin Paper Chromatography, John Ennis Coutant

Honors Theses

In partition chromatography a solid is used to hold a film of liquid and the distribution of a substance is between the liquid phase and another immiscible liquid phase. Because most substances have slightly different distribution coefficient between two immiscible solvents, a series of successive extractions will cause a separation. This is the predominant factor in the paper chromatography. The paper itself is an inert support holding a stationary aqueous phase. As the immiscible solvent flows past an area containing the solute, by capillary flow, partition occurs. When the immiscible solvent reaches an area not containing any solute, partition again …

Electrophoretic Analysis Of The Interaction Of Adenosinetriphosphate With Actomyosin, William Gordon Hunt

Honors Theses

The phenomenon of muscular contraction has long been of particular interest to physiologists, biochemists and pharmacologists. Much work has been done in an effort to elucidate the chemical interactions and the mechanisms of converting chemical energy to mechanical work in muscle. The application of electrophoresis to biological problems evolved rapidly after Tiselius adapted the electrophoretic apparatus in 1937. The modern apparatus for free flowing moving boundary work with its low temperature bath, U-tubes with precision ground optical faces and the ingenious schlieren optical system constitutes a powerful method for molecular-level research.

Nuclear Magnetic Resonance Analysis Of Benzimidazole, Frank Willmott Williams

Honors Theses

The original project was concerned with the determination of the product of the reaction of an alcohol and vanadium 8-hydroxyquinolae. Because of the low solubility of the vanadium compound, this project had to be abandoned. It was then decided to make a detailed NMR spectra study on a single compound.

Surficial Geology Of The Las Vegas Quadrangle, Nevada, Charles Edgar Price Jr

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Las Vegas 15-minute quadrangle, located in the south part of the state of Nevada, includes about 240 square miles in and around the city of Las Vegas; it is in the basin and range province. The quadrangle includes a broad valley floor that was once a lake bottom, a bordering area of badlands and rolling hills developed in Tertiary and Quaternary deposits, an outer marginal area of alluvial fans, and the surrounding mountains.

The mountains constitute about three per cent of the total land surface and are composed of rock ranging in are from Precambrian to Tertiary. The remainder …

A Study Of The Dichlorobis [1,10 Phenathroline] Complex Of Cobalt (Iii), John Orville Ruid

Honors Theses

One of the major fields of inorganic chemistry deals with complex ions or molecules and is called coordination chemistry. A complex ion is merely a central ion, usually a metal, surrounded by a cluster or atoms, ions, or molecules of another species, covalently bound to the central ion.The significance of these compounds can be sensed when one realizes that the hemoglobin of blood and the chlorophyll of the green of plants are both complex ions. Chlorophyll has.magnesium as a central ion while the central ion of hemoglobin is iron.

Embedding A Ring Into A Ring With Identity, Richard F. Maruszewski Jr.

Master's Essays (1922 - )

The presentation of this paper is divided into three sections. The first or these sections is composed of proofs of different ways of embedding rings into rings with identity The material in this section, which constitutes pages 1 - 10 , is quite different from the material in the last two sections. Because of this difference I followed a different method of presentation in the first section. The method used is to present a lecture outline, that is to produce the material just as I would in class. The last two sections ·are presented in a more narrative fashion. In …

Patient Satisfaction With Nursing Care During Labor And Delivery, Afton G. Pratt

Loma Linda University Electronic Theses, Dissertations & Projects

Within the scope of the questionnaire designed for this study, it was proposed to determine the satisfactions and dissatisfactions of obstetrical patients at a selected hospital. The study was concerned with patients' perception of nursing care through labor and delivery. Thirty postpartal clinic patients were interviewed in the hospital, using the interview guide which was constructed by the nurse researcher. Groups of questions in the interview guide corresponded to five categories. These five categories comprised the analysis sheet. The findings of the study are given for each of the following categories: One-A--Congeniality of Nurse to Mother. Friendliness of the admitting …

Availability And Use Of Water In Nebraska, F. Butler Shaffer

Conservation and Survey Division

No abstract provided.

An Anthropometric Study Of The Face And Dentition Of The Pima Indian Population At The Stewart Indian School, Carson City, Nevada, Wilmonte Lee Penner

Loma Linda University Electronic Theses, Dissertations & Projects

Study casts and cephalograms were obtained on 18 female and 21 male Pima Indian students from the Stewart Indian Boarding School, Carson City, Nevada. Dentitional characteristics were assessed both clinically and by study casts. Cranio-facial analyses were performed by utilizing the skeletal and denture pattern variables suggested by the Downs and Riedel cephalometric analyses.

The purpose of this study was two-fold: (1) to determine the extent to which the Pima conforms to the Mongoloid master pattern, and (2) to test whether or not significant differences exist between the Pima and other Mongoloid groups which would allow discrimination.

The results of …

A Comparative Study Of The 5- And 3-Meal Plans In Six Convalescent Hospitals In San Bernardino County, Donna J. Meek

Loma Linda University Electronic Theses, Dissertations & Projects

A study comparing the 3- and 5-meal plans of food service, as used in long-stay geriatric units in San Bernardino County, have been compared. Three homes utilizing the 5-meal plan and three utilizing the 3-meal plan, to serve as controls, were chosen. A random sample of ten patients from each home was observed for three days to find the daily average nutrients in the foods served, eaten, and wasted. Also, interviews to compare factual information and attitudes were utilized for sample patients and personnel. The nutritional data was analyzed on the computer.

The results indicated that those on the 5-meal …