Physical Sciences and Mathematics Commons^™

Mouse4: An Improved Implementation Of The Ratfor Preprocessor, Douglas E. Comer

Department of Computer Science Technical Reports

No abstract provided.

Certainty And Chance In The Physical Sciences, Wytse Van Dijk

Pro Rege

No abstract provided.

The Effect Of Solvent Polarity On The S1-T2 Energy Gap In 9- And 2-Substituted Anthracene Derivatives In Aromatic And Non-Aromatic Solvents, John S. Facci

Honors Theses

Fluorescence quantum yields, fluorescence lifetimes, energies and intersystem crossing activation energies were measured for methyl-2-anthroate and methyl-9-anthroate in various polar, non-polar and aromatic solvents.

The Decomposition Of Phenyl-Benzoyl-Diazamethane And Its Relevance To Alkyne Ozonolysis, Joy A . Sawyer

Honors Theses

The thermal or photolytic decomposition of diazo compounds is known to produce a carbonyloxide in the presence of oxygen. Analogously, ∝-diazoketones should produce acyl carbonyloxides. This intermediate is identical to one proposed for the ozonolysis of alkynes and its substantiation is the purpose of this study. By examining the products of the thermal, copper catalyzed phenylbenzoyldiazomethane decomposition, one should be able to determine the intermediate’s presence. Benzoic anhydride, benzil and methyl diphenyl-acetate have been identified as products and tetraphenylglycolide is also thought to be present. Methyl diphenyl-acetate is the result of Wolff rearrangement, while the other three are proposed to …

Mechanisms Of Saponification Of Sterically Hindered Esters By Optical Activity And Kinetic Studies, George A. Walrath

Honors Theses

This thesis presents methods for preparation of sterically hindered organic acid esters. The secondary- and tertiary-butyl esters of 2,2’ dimethylpropanoic acid (pivalic acid, neo-pentanoic acid, or trimethyacetic acid) were prepared by suggested methods. The best method proved to be that suggested by Bochkova, Proskuryakov, Pirozhkoc and Eidus, where the esters of neo-acids are prepared through their respective acid chlorides. In the case studies in this thesis, the acid chloride of neopentanoic acid (pivaloyl chloride) was reacted with secondary or tertiary-butyl alcohol. Kinetic studies of the saponification of secondary-butyl pivaloate were made at various temperatures, and from the data obtained, the …

The Study Of Gas Decomposition Due To Laser Stimulation, James A. Burke

Honors Theses

A survey of various gases known to emit radiation when pumped with a laser was undertaken to discover whether or no these gases would decompose as a result of the laser stimulation. A literature search provided some previous work in this area but left many gases unstudied. Methanol, 1,1-difluoroethylene, ethanol, methylene chloride and methyl iodide were subjected to laser irradiation, Using an infrared spectrophotometer as a detector, none of these five gases showed clear evidence of decomposition, Because of inherent limitations of the IR detection system, a mass spectrometer was put into operation. Calibration of this instrument was performed, Results …

Synthetic Approaches To Specifically Labeled Dimethyl-Dideuterionaphthalenes, Armand J. Scatena

Honors Theses

The purpose of this work was the study of synthetic approaches to specifically labeled deuterated 1, 4-dimethylnaphthalenes. Alkylation of ortho- and para-dibromobenzenes eventually led to the formation of some 1, 4-dimethylnaphthalene although deuteration was rather poor. Under the conditions employed, much isomerization of Friedel-Crafts products resulted. Not only did the bromines rearrange intramolecularly, but substantial rearrangement of the alkylating moiety may also have occurred. The major products of these reactions were dibromophenylcyclohexanes. It appears from the products obtained by the methods employed in our work that specific monodeuteration rather than specific dideuteration should be used to attain the desired product.

The Carbon Dioxide Laser Induced Decomposition Of Freon 113, Curtland Chester Brown Iii

Honors Theses

The carbon dioxide laser irradiation of Freon 113, 1,1,2 trichlorotrifluoroethane, yielded Freons 11, trichloro­fluoromethane, l2, dichlorodifluoromethane, and 13, chloro­trifluoromethane, along with chlorotrifluoroethylene and unidentified products. Product formation was found to increase as the pressure of the starting material and laser power were increased, although no formal pressure or power dependenry could be determined. The Freon products were identified using a gas chromatograph in the flame ionization mode with a molecular sieve column. Chlorotrifluoroethylene was identified with an infrared spectrophotometer. The buildup of unidentifiPd brown tars was observed on the glass walls of irradiated cells. The pyroysis of Freon 113 has …

Hydrothermal Growth Of Quartz, Samuel J. Casella

Honors Theses

The hydrothermal method of crystal growth utilizes a solvent at high temperature and under high pressure to grow large single crystals. A suitable aparatus was constructed for research ith this unique method.

The Prairie Naturalist Volume 9, No. 2. June 1977

The Prairie Naturalist

PROPAGULE DISPERSAL AMONG FOREST ISLANDS IN SOUTHEASTERN SOUTH DAKOTA ▪ J. W. Ranney and W. C. Johnson

GENERAL WEATHER CONSIDERATIONS FOR THE PRESCRIDED BURNING OF PRAIRIE IN NORTHWEST MINNESOTA ▪ W. D. Svedarsky and R. W. Sands

YELLOW-CROWNED NIGHT HERONS SIGHTED IN NORTH DAKOTA ▪ D. G. Jorde, G. L. Krapu, and R. K. Green

Metal-Ion Oxidative Decarboxylations. 9. Reaction Of Benzilic Acid With Cerium(Iv) In Acidic Perchlorate And Sulfate Media, Samir B. Hanna, Sezai A. Sarac

Chemistry Faculty Research & Creative Works

The kinetics of oxidation of benzylic acid (HLH) to benzophenone by cerium (IV) has been studied in several media using the stopped-flow technique. In HClO₄-Na₂SO₄-NaClO₄ media, which allow for the variation and control of the concentrations of the various Ce(IV) species at constant [H⁺] and ionic strength, the rate data suggest CeSO₄²⁺ as the kinetically relevant species. In HClO₄ the observed first-order rate constants, tetrad, first increase with increasing HLH concentration, then decrease slightly at higher substrate concentrations suggesting the intermediacy of two complexes: a reactive [Ce(IV)HL] and …

Micellar Solutions Versus Microemulsions, Derek G. Rance, Stig Friberg

Chemistry Faculty Research & Creative Works

No abstract provided.

Stochastic Models For Precipitation, Peter Purdue, Z. Govindarajulu

KWRRI Research Reports

In this project a stochastic model, using Semi-Markov Processes, was developed to simulate daily rainfall patterns in Kentucky. This model contains many of the currently used models as special cases and is applicable at any station in Kentucky as well as elsewhere.

For use in Kentucky an 8 state Semi-Markov Process is developed and the parameters of the model are determined from historical rainfall data. The model is tested at 4 different stations in Kentucky and the simulated and actual rainfall processes are found to be in good agreement. Finally some long run probabilities are calculated as well as mean …

Optimal Systems Of Storm Water Detention Basins In Urban Areas, D. K. Mynear, C. T. Haan

KWRRI Research Reports

Flood retention basins are commonly used in urban areas to reduce the impact of urbanization on downstream flooding. When more than a few acres are developed, systems of retention basins are often required. A procedure has been developed whereby the optimum (least cost) system of basins can be determined to meet a given downstream flow requirement. The method considers several design options including basins on all subwatersheds, basins on only some of the subwatersheds, basins of various sizes and basins with various stage-discharge characteristics. The procedure has been developed in the form of a computer program to aid the designer …

Simulation Of The Sedimentology Of Sediment Detention Basins, A. J. Ward, C. T. Haan, B. J. Barfield

KWRRI Research Reports

Sediment detention basins are a widely used means of controlling downstream sediment pollution resulting from stripmining and construction activities. A mathematical model for describing the sedimentation characteristics of detention basins has been developed. This model requires as inputs the inflow hydrograph, inflow sediment graph, sediment particle size distribution, detention basin stage-area relationship and detention basin stage-discharge relationship. Based on this information the model routes the water and sediment through the basin. In this routing process the outflow sediment concentration graph, the pattern of sediment deposition in the basin and the sediment trapping efficiency are estimated. Comparison of predicted results with …

Intensive Hydrographical And Water Quality Survey Of The Chincoteague/Sinepuxent/Assawoman Bay Systems Volume I: Study Program, C. S. Fang, A. Rosenbaum, J. P. Jacobson, P. V. Hyer

Reports

No abstract provided.

Ecological Study Of The Tidal Segment Of The James River Encompassing Hog Point : 1976 Final Technical Report, R. A. Jordan, P. A. Goodwin, R. K. Carpenter, J. V. Merriner, A. D. Estes, R. K. Dias

Reports

• Section I: : Contents River Biota Studies at the VEPCO Surry Nuclear Power Station by R. A. Jordan, P. A. Goodwin, and R. K. Carpenter
• Section II a: Plant Entrainment of Ichthyoplankton at the VEPCO Nuclear Power Plant by J. V. Merriner, A. D. Estes, and R. K. Dias
• Section II b: Thermal Plume Entrainment of Ichthyoplankton at VEPCO Nuclear Power Station by J. V. Merriner, A. D. Estes, and R. K. Dias

Oshkosh Sw, Nebraska—Garden County, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Oshkosh SW, Nebraska—Garden County

7.5 minute series (topographic), scale 1:24,000

102°22'30" to 102°30'

41°15' to 41°22'30"

Tmo Ogalalla, Tφb Brule, Ash Hollow, Devil's Washbasin, Wild Horse Canyon

June 1977

Metal-Ion Oxidative Decarboxylations. 10. Substituent Effects In The Cerium(Iv)-Benzilic Acids Reaction, Samir B. Hanna, Sezai A. Sarac

Chemistry Faculty Research & Creative Works

The rates of oxidation by cerium (IV) of several substituted benzylic acids (unsubstituted, 2,2′-dichloro, 4,4′-dichloro, 4,4′-dimethyl, 4,4′-dimethoxy, and 4,4′-dinitro) to the corresponding benzophenones have been studied spectrophotometrically in aqueous H₂SO₄, aqueous HClO₄-HOAc, and acetonitrile. The rates are much slower in H₂SO₄ than in the other two media, probably because of heavy sulfato complexation of cerium(IV). The px as of the various acids were determined potentiometrically. The Hammett p values in acetonitrile and HClO₄-HOAc media, derived from correlations with several sets of σ constants and with the newly determined pK …

The Effect Of Endodontic Therapy On The Incidence Of Radiation Caries In Dogs, James A. Abbott

Loma Linda University Electronic Theses, Dissertations & Projects

Endodontic therapy was evaluated as a possible control or prevention modality of radiation type dental caries in dogs. Two adult male dogs with permanent dentitions had endodontic therapy performed on alternating teeth in each jaw. The nontreated teeth served as controls.

The dogs were irradiated with 7000 rad Cobalt-60 radiation fractionated over an eight week period. The dogs were killed at 60 and 182 days post-irradiation. The teeth were removed from the jaws and immersed in methylene blue dye, sectioned, and the dye penetration pattern photographed. Diffusion of the dye into the tooth structure was quantified and statistically analyzed.

A …

Buffalo National River Ecosystem - Part Iii, M. D. Springer, E. B. Smith, D. G. Parker, R. L. Meyer, E. E. Dale, R. E. Babcock

Technical Reports

Samples for water quality analyses and phycological studies were taken from the nine standard sampling locations on the Buffalo River nine times during the period from March 1976 through February 1977. The April-June 1976 samples represent nearly identical conditions throughout the spring period; therefore, emphasis was placed on taxonomic research. As the early January sample was considered sufficient~y reflective of stable winter conditions, the December and February periods were. used for detailed microscopic examination of the rich and diverse diatom flora that was found in the river this year. A total of 273 taxa of diatoms were identified from the …

Fragments Of 1st-Order Logic, I: Universal Horn Logic, George F. Mcnulty

Faculty Publications

No abstract provided.

Sobolev Type Differential Equations, M. E. Lord, V. Lakshmikantham

Mathematics Technical Papers

An imbedding method for solving linear Fredholm integral equations was introduced by Sobolev [3] which involves the solution of the following differential equation with initial value for the resolvent kernel [see pdf for notation]. The differential equation in (1.1) is unusual in that the solution K(t,y,x) is evaluated at different combinations of the independent variables (t,y,x) . We will refer to any differential equation with this property as a Sobolev type differential equation. We introduce a Sobolev type differential equation which generalizes (1.1) and consider conditions for existence and uniqueness. A Picard type theorem is obtained, which by way of …

Anclote Power-Station Post-Operational Plankton Monitoring Program Volume I: Technical Discussion, Westinghouse Electric Corporation, Environmental Systems (Pa), Florida Power Corporation

Reports

As part of the National Pollutant Discharge Elimination System the U.S. Environmental Protection Agency has required that Florida Power Corporation (FPC) demonstrate that .operation of the Anclote Power Station does not adversely affect the aquatic community of the Anclote River and Anchorage. In response to this requirement FPC initiated the Anclote Post-operational Ecological Monitoring Program and contracted with Westinghouse Environmental Systems Department to conduct the plankton monitoring portion of the program.

The Method Of Nonlinear Variation Of Constants For Difference Equations, M. E. Lord

Mathematics Technical Papers

A method of nonlinear variation of constants for discrete difference equations is developed, which generalizes a well-known linear variation of constants formula. The method is shown to be useful in studying asymptotic behavior of perturbed nonlinear difference equations.

Ultrasonic Versus Hand Filing Of The Human Root Canal System, Howard W. Scholz Jr.

Loma Linda University Electronic Theses, Dissertations & Projects

A comparison was made of ultrasonic filing versus hand filing using three solutions to flood the canals of 24 extracted human maxillary central incisors. A modified PR-30 Cavitron insert was used in a Cavitron 1010 unit for the ultrasonic filing. The clinical crown was removed with a diamond saw and water spray at the cemento-enamel junction. The two major groups were ultrasonic filing versus hand filing; the three subgroups were solution/solvents - 10% EDTA, 2.0% NaOCl, and distilled water.

After filing, the roots were grooved longitudinally with a high speed bur and cracked opened with a mallet and chisel. The …

Community Health Nursing Assessment And Counseling Of The Breast-Feeding Primipara, Donita Rotherham

Loma Linda University Electronic Theses, Dissertations & Projects

An experimental study was conducted with twenty-one breast-feeding primiparas during the initial four-week post-partal period to test the effect of in-home community health nursing assessment and counseling on the breast-feeding success rate. It was hypothesized that mothers receiving assessment and counseling regarding physical, informational and psychosocial needs, would be more successful than those who were not counseled.

Criteria for success were: (1) breast-feeding at four weeks postpartum, (2) an adequate milk supply as evidenced by no need for formula supplementation to keep the baby satisfied, (3) an infant weight gain of one to two pounds during the four-week period, and …

Community Health Nursing Assessment And Counseling Of The Breast-Feeding Primipara, Donita Rotherham

Loma Linda University Electronic Theses, Dissertations & Projects

An experimental study was conducted with twenty-one breast-feeding primiparas during the initial four-week post-partal period to test the effect of in-home community health nursing assessment and counseling on the breast-feeding success rate. It was hypothesized that mothers receiving assessment and counseling regarding physical, informational and psychosocial needs, would be more successful than those who were not counseled.

Criteria for success were: (1) breast-feeding at four weeks postpartum, (2) an adequate milk supply as evidenced by no need for formula supplementation to keep the baby satisfied, (3) an infant weight gain of one to two pounds during the four-week period, and …

Xeroradiography & Conventional Radiography : Comparative Imaging Of The Temporomandibular Joint, Nelson R. Gatov

Loma Linda University Electronic Theses, Dissertations & Projects

An investigation was conducted to evaluate the application of Xeroradiography for imaging the Temporomandibular Joint using the Updegrave and Weinberg positioning boards and to compare these images to those obtained by conventional radiography using the same positioning boards.

A cadaver head in which three spherical radiopaque implants had been placed was used in this study. A General Electric Model 1000 (Dental Unit) was the source of radiation. The conventional radiographs were produced on Dupont Cronex 2DC film and processed by a Phillips 810 automatic processed by a Xerox "125 System".

MAGNIFICATION

A comparison of the implant sphere diameters and the …

A Consciousness Simulation Model, R. Edward Mitchell Jr.

Theses

The thesis titled "A Consciousness Simulation Model" by R. Edward Mitchell (1977) explores the theoretical design of a digital model aimed at simulating human consciousness. The model is structured around a collection of independent processing modules that mimic various human cognitive and emotional processes. These modules include components for thought selection, ego/achievement, memory, and emotion processing, which interact with one another in a fashion that simulates aspects of human thought and behavior.

Mitchell's primary goal is to develop a system that could behave more like a human, particularly in communication and decision-making processes, to improve human-machine interaction. The thesis highlights …