Physical Sciences and Mathematics Commons^™

Are The Needs Of Industry For Data Processing Programmers Being Adequately Supported By Technical Training Programs In Oklahoma, Dale I. Sare

Electronic Theses & Dissertations

In 1970 over 40,000 computers were in use in the United States and 1,000 more on order from manufacturers. Every major newspaper had published at least one news article or editorial about computers during 1970. These articles reported how computers function, the speed at which they function, their limitations and how they have, and are continuing to become, a complex part of the business world and social affairs of man.

A Zooplankton Study Of Stumpy Lake, Virginia Beach, Virginia, Jose E. Hernandez

Biological Sciences Theses & Dissertations

A one year study was made of the zooplankton composition in Stumpy lake, a reservoir in the city of Virginia Beach, Virginia. Quantitative and qualitative -parameters were investigated under field conditions. The analysis of the data presents information on the monthly dynamics or the zooplankton and other fluctuations in the lake environment. It is the intention or this study to emphasize the seasonal changes in the zooplankton community and their relationship to the ecological factors responsible for these variations.

Complexes Of The 2,2'-Bisacylhydrazide Of 3,3'-Bipyridine And The Dipicolinic Acid Dihydrazide Ligand Systems, William Leo Johnson Iii

Chemistry & Biochemistry Theses & Dissertations

The copper(II) complexes of the picolinic acid bydrazide (PH), the dipicolinic acid dibydrazide (DPH), and the 2,2'-bisacylbydrazide of 3,3'-bipyridine (DAR) ligand systems have been prepared and have been characterized by infrared spectroscopy. Coordination has been proposed to occur between the terminal amine, the amide nitrogen, and the ring nitrogen in each of the respective complexes.

Evidence for the loss of the amide hydrogen upon complexation of PH, DPH, and DAH with copper(II) has been observed by the n.m.r. study of the zinc(II) complexes of the PH and DAH ligand systems. This is in support of the structures proposed above for …

Particle Size Distribution And Small-Scale Bed-Forms On Sand Waves, Chesapeake Bay Entrance, Virginia, John T. Wells

OES Theses and Dissertations

The relationship between sediment texture and topography has been studied along five series of sand waves in Chesapeake Bay entrance, Virginia. Results indicate that two types of sand waves with reference to mean grain size are present: sand waves with coarse sediment on crests and fine in troughs, and sand waves with fine sediment on crests and coarse in troughs. Asymmetrical, migrating sand waves exhibit the first type; near-symmetrical, non-migrating sand waves exhibit the second type. In general, bimodal sediment is present on crests of migrating sand waves and in troughs of stationary sand waves. There is a progressive decrease …

Phycosociology Of The Estuarine Eulittoral Of Smith Island Virginia: A Quantitative Approach To Seasonal Periodicity, William M. Willis

OES Theses and Dissertations

Seasonal periodicity of benthic algae of the estuarine eulittoral of Smith Island, Virginia, (37°07’55” N, 75°55’ W), has been investigated on a qualitative and quantitative basis. Forty-three taxa of benthic eucaryiotic algae were found to be present; of these, twenty-one were quantitatively significant at least once during the course of the study. Five species represent additions to the Virginia flora, and, at the same time, also represent southern extensions of the known U.S. east coast range. The range of three other species has been extended, though they are not new to Virginia.

Review of the literature suggests two models of …

Food And Feeding Of Fishes From Magothy Bay, Virginia, Joseph J. Kimmel

OES Theses and Dissertations

No abstract provided.

A Comparative Limnological Survey Of Brackish-Water Lake And A Fresh-Water Lake At Mount Trashmore, Virginia Beach, Virginia, Gene Ramon Cocke

Biological Sciences Theses & Dissertations

No abstract.

Man And Environment In Rural Thailand, James A. Hafner Emeritus Professor

James A Hafner

No abstract provided.

The Bedrock Geology Of The Southwest Part Of The Kachess Lake Quadrangle, Washington, David Carl Lofgren

Dissertations and Theses

The southwestern part of the Kachess Lake quadrangle lies between Lakes Cle Elum and Kachess, on the east flank of the central Cascade Range of Washington. The region lies between the North and South Cascade petrologic provinces, and includes rocks typical of each. Pre-Tertiary Easton Schist (called the Shuksan Suite farther north), and the Late Cretaceous-Paleocene Swauk Formation occur widely in the North Cascades, while the Tertiary Silver Pass Volcanics and Teanaway Basalt are typical of South Cascade volcanic sequences. Diabasic dikes of the Teanaway dike swarm occur throughout the vicinity.

The area is bounded on the west by a …

Water Resources News, Volume 5, No. 6, June 1973

Water Current Newsletter

From the Desk of the Director
Deadlines for Research Proposals
Dr. Stanton Ware Visits
Regional Research Workshop
Summer Institutes at the University of Nebraska
Seminar Proceedings Available
Nitrogen in Nebraska's Environment
National Water Commission Report Issued
Water Pollution Control Research Fellowships
State Environmental Center Measure Revived
HR 5464 Approved by House

Aromatic Solvent Induced Shifts Of Trifluoromethyl Pyrazoles, Manuel Constantine Bourlas

Master's Theses

Nuclear Magnetic Resonance (NMR) has been used to study the keto-enol equilibrium in a number of trifluoro­methyl S-diketones as well as the dihydropyrazoles obtained when these S- diketones are reacted with thiosemicarbazide. The technique of Aromatic Solvent-Induced Shifts (ASIS) has been used to study the geometry of the collision complex and the strength of the association between solute and solvent. From the data presented, the stereochemistry of these pyrazoles has been determined and a reaction mechanism for their formation has been proposed.

Cephalometrics For The Oral Surgeon In The Diagnosis Of Facial Deformities, Frederick J. Mantz

Loma Linda University Electronic Theses, Dissertations & Projects

Surgical orthodontics presents a challenge to the oral surgeon. By the nature of the oral surgeon's training and discipline he should be the one best qualified to treat the surgical aspect of the surgical orthodontic case. The establishment of a proper diagnosis and means of communication between the oral surgeon and orthodontist are essential in achieving a good final result for the surgically treated case. Fortunately, a scientific method of diagnosis is available that can provide both specialties with a common language. Computerized cephalometric analysis can provide the diagnosis and link of communication for the discussion of goals and treatment. …

The Investigation Of The Use Of Fluorescein As A Spectral Probe Of Protein Environment, Michael Andrew Martin

Honors Theses

The study was iniated to investigate the properties of fluorescein as a reporter group or spectral probe of protein environment. Through spectral and flourescence studies it was determined that the flourescein binding sites were non-polar relative to bulk water. The spectral study also showed a lowering of pKA for the first one or two flourescein molecules to bind to the protein.

Formation Of An Isoquinoline In The Reaction Of A Diazoketone With Boron Trifluoride, Marc Maller

Honors Theses

It has been reported through work in the field of diazo chemistry that normal reactions of diazo ketones with certain acids can result in some unusual products. In the normal type reaction substituted methyl ketones are the resulting products which occur as a result of the elimination of nitrogen. However, the presence of a nucleophilic center at the ortho position of an aromatic diazo ketone can override the normal replacement and result in a cyclization product with the elimination of nitrogen. In these reactions it was found that addition of excess neoleophile still did not form open-chain products. Both four-and …

Liquid Crystals: Low Melting Nematic 4, 4'-Bis-(Alkylbenzal)-2-Chloro-1,4-Phenylenediamines, Herbert S. Cole Jr.

Honors Theses

Several homologues of the 4,4'-bis-(alkoxybenzal)-2-chloro-1,4-phenylene series were synthesized and their mesomorphic behavior characterized. Furthermore a new series of liquid crystalline compounds, 4,4 1 -bis­ (alkylbenzal)-chloro-l,4-phenylenediamines, have been synthesized and the mesomorphic behavior characterized up to the c carbon chain length. All homologues showed nematic behavior with broad mesophases and particularly low melting points.

A Study Of Indole-Ring Compounds In The Retina Of The Eye Of The Cow (With Special Emphasis Given To Melatonin And Serotonin), James Howard Kaye

Honors Theses

The literature justifies the hypothesis that there might be either serotonin or melatonin present in the retina of higher verta­brates. Serotonin has been demonstrated in nervous tissues from animals in all parts of the animal kingdom. As the retina is part of the central nervous system, it is a logical place to look for the presence of serotonin. Serotonin has also been found in the brain of ungulate fetuses. Serotonin has been measured in isolated bovine fetal brain some seventy-five to ninety days following gestation.

Iodination Of Aromatic Compounds, Paul T. Kabb

Honors Theses

Iodination of aromatic compounds was accomplished using the procedure given by Durand, with a few slight modifications introduced. Benzene was reacted with sulphuric acid, fuming sulphuric acid, and iodine to give hexaiodobenzene. Ethylbenzene was reacted with the mixture of sulphuric acids and iodine to give a mixture of less iodo-substituted products. Reduction using hydrogen atoms was accomplished. Hexaiodobenzene in the presence of dimethyl sulfoxide and sodium hydride was reduced to a mixture of less iodo-substituted products.

The Cationic Copolymerization Of B-Pinene And Styrene, William David Mciver

Honors Theses

The Catatonic polymerization process is least well known of the polymerization mechanisms. Copolymerization by cationic initiation is not well understood. Charles Snyder began investigating the copolymerization of B-pinene and styrene in the fall of 1971, and found some intersting things. He reported, however, that the project was incomplete. This project was based on the work that Snyde began. The products he made, in addition to several others, were completely analyzed in an effort to obtain information about the cationic polymerization process. DSC, GPC, and solvent studies, along with VPO, were the methods of analysis.

The Preparation Of 2,4,4',6,6'-Pentamethyldiborazinyl-1-2' By The Reaction Of B-Trichloroborazine With Grignard Reagent, David C. Sertl

Honors Theses

The goal of this research was to prepare crystals of 2,3,3',6,6'-pentamethyldibroazinyl1-1,2' in order to obtain vapor pressure data and a gas-phase, infrared spectrum.

Reactions Of Alkyl Halides In Dimethyl Sulfoxide Under Friedel-Crafts Conditions, Robert Wallace Dean Jr.

Honors Theses

When dimethyl sulfoxide, ethyl bromide, and 5 mole­-percent of ferric chloride are heated together, a yellow precipitate is formed. The product partially decomposes at 172 degrees, with evolution of gas. It is very soluble in water, but only slightly soluble in methanol. It contains 7.18% by weight of iron (III), suggesting a compound of high molecular weight or a mixture. It appears that a Friedel-Crafts alkylation of DMSO has taken place, perhaps giving an ethyldimethyloxosulfon­ium salt, however, the IR and NMR spectra do not substantiate this. The absence of alkoxydimethylsulfonium salts in the above reaction mixture has been demonstrated. An …

The Prairie Naturalist Volume 5, No.2. June 1973

The Prairie Naturalist

SOME ASPECTS OF MINK-WATERFOWL RELATIONSHIPS ON PRAIRIE WETLANDS ▪ Robert T. Eberhardt

SUMMER AND FALL FOODS OF MINK ON THE J. CLARK SALYER NATIONAL WILDLIFE REFUGE ▪ Wayne F. Cowan and James R. Reilly

GIANT CANADA GEESE ▪ S. O. Kolstoe

SOME LICHENS OF BOG AND PAPER BIRCH FROM NORTH DAKOTA ▪ Dennis T. Disrud and Thomas D. Trana

A PALEOCENE FOSSIL LOCALITY IN SOUTHEASTERN SASKATCHEWAN: THE SHORT CREEK SECTION ▪ Paul L. Broughton

NOTE: A new orchid for North Dakota ▪ Robert E. Stewart

Effects Of Dipolar Aprotic Solvents And Ion Pairing On Elimination Reactions, David Andrew Benko

Honors Theses

An improved method for preparing t-butylacetylene was developed. Starting with t-butyl chloride, aluminum trichloride and vinyl bromide and followed by didehydroalogenation using potassium hydroxide in dimethyl sulfoxide, t-butylacetylene has been prepared in a better than 70% yield. In the process the effect of ion pairing on the orientation of elimination reactions was determined. From this a system for converting 2-haloalkanes directly into 2-alkenes was developed.

Synthesis Of N-Methyl-N-Benzyl-Beta-Chloro (Substituted Beta-Phenyl) Ethylamine Hychochloride, Mark Stuart Shulman

Honors Theses

β-haloalkyl amines are effective sympathetic blocking agents. An attempt was made to synthesize two β –haloakyl-amines, N-methyl, N-benzyl-β-chloro-β-(p-bromophenyl and 3,5 dichloro phenyl) ethylamine hydrochloride, in hopes that the compounds would have the pharmacological properties of a rapid onset, long duration, low toxicity, and few side effects. The basic criteria that β-haloalkylamine must have in order to display blocking properties are: tertiary amine, a β-haloakylamine group capable of forming an intermediate ethylenimonium ion, and an unsaturated ring substitute attached to the amine to allow ring stabilization. The compounds being synthesized display all these characteristics. The synthesis of N-methyl, N-benzyl- β-chloro β-(p-bromo-phenyl) …

Study Of Serotonin And Melatonin In The Bovine Retina, Paul Michael Parker

Honors Theses

The purpose of this research was to determine the presence of absence of the indoles serotonin and melatonin in the bovine retina. Their presence in the bovine pineal had been known for some time but no findings have been reported in the literature for bovine retinal tissue. Retinal tissue was extracted according to several procedures suggested by the literature. The extracts were tested against known samples of these indoles by thin layer chromatography and fluorescence spectra examined on the Hitachi-Perkin Elmer MPF-2 Fluorescence Spectrophotometer. The presence of melatonin in the bovine retina was qualitatively determined while not more than 0.01 …

Adrenergic Blocking Agents, Jeffrey Bruce Alifanz

Honors Theses

β-Haloalkylamines are a series of sympathetic blocking compounds. Phenoxybenzamine, the only commercially available β-haloalkylamine, goes under the trade name of dibenzyline and has an onset of sympathetic blocking effect of forty-five minutes and lasts for twenty-four to thirty-six hours. It requires a dose of 10-15 mg./kg. in previously anesthetized animals for full blocking effect and obviously its slowness of onset curtails its usefulness. N-Methyl-N-benzyl-β-chloro-β-phenyl-ethylaminehydrochloride also known as BMEA (for benzyl, methyl, phenethyl amine) differs by having an onset of sympathetic blockade of only five minutes and still has a duration in excess of seventeen hours. In addition, it is about …

Investigation Of The Relationship Of The Excited State Geometry Change And The Solvent Dependent Fluorescence Of 9-Methyl Anthroate, Ronald Michael Hoffman

Honors Theses

Due to a geometry difference, the polarity of the first excited singlet state of 9-methyl anthroate is shown to be greater than that of the ground state. This polarity difference results in solvent dependent fluorescence properties for this molecule. From the Stokes shift variations of 9-methyl anthroate fluorescence in polar aprotic solvents, the excited state dipole moment is 4.5 D larger than the ground state value. In protic solvents, the Stokes shifts are larger than in polar aprotic solvents indicating a large hydrogen bond contribution to excited state solvation in the former solvents. In non-polar and some polar aprotic solvents, …

Thermoluminescence And Electron Paramagnetic Resonance Of Libyan Desert Silica Glass, Kamal A Rashid

Archived Theses and Dissertations

No abstract provided.

Initial Feasible Solutions Of Three Dimensional Transportation Problems, Mamoru Aiga

Masters Theses

The purpose of this paper is to investigate methods to obtain initial feasible solutions of three dimensional transportation problems. Schell's procedure was tested on various randomly generated problems, and it was determined that this algorithm did not always yield an initial feasible solution. Thus a modified Schell procedure was developed.

Computer programs were written to compare the modified Schell procedure with Phase I of Simplex method. It was concluded, from cases tested, that the modified Schell procedure requires much less computing time and generally gives a feasible solution closer to the optimum solution.

The Theoretical Distribution Of Forces In The Rigid Component Of The Buccal Arch Positioner, Dennis H. Teruya

Loma Linda University Electronic Theses, Dissertations & Projects

The distribution of an applied force to the rigid component of the Buccal Arch Positioner was determined with a theoretically formulated model. The rigid component was assumed to be a free body without the semi-rigid attachments and was evaluated at four points for the force distribution. The summation of the forces and the moments were equated to zero and were utilized to derive equations to solve for the unknown forces. The unknown forces at each point of the rigid component were solved for in terms of the given force applications.

A laterally directed force application at one of the posterior …

A Method Of Analyzing Mandibular Movement, Richard B. Mccoy

Loma Linda University Electronic Theses, Dissertations & Projects

Mandibular movement is considered to be a fundamental factor in the study, analysis, and treatment of occlusion. For many years, dentists have realized that dental health depends upon the compatibility of mandibular movements and occlusion. This realization has led to the development of new methods and techniques for recording accurately and scientifically the movements of the mandible. In order for this data to be of scientific value, it must be stored in a usable form which is easily available for analysis.

The purpose of this research project was to develop a procedure for storing and recalling mandibular-movement information. Before such …