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THE INTERACTION OF THE Eco RI RESTRICTION ENZYME FROM E.coli WITH NUCLEOTIDES

Description: The Eco R1 restriction enzyme can be shown to be inhibited by nucleotides which correspond to any part of its known site of phosphodiesterase activity. A series of di-, tetra-, and hexa-nucleotide fragments were synthesized and their effect on the activity of the enzyme upon superhelical Co1 E1 DNA studied. The inhibition caused by the individual mononucleotides were also studied. In general all the nucleotide fragments showed some form of interaction with the enzyme system. Tetranucleotides were stronger inhibitors than dinucleotides, which in turn were stronger inhibitors than the mononucleotides. Within each category of inhibitors, those containing the phosphodiester bond which is acted upon by the enzyme were the strongest inhibitors. Only those fragments which were consistent with the enzymes site of activity showed competitive inhibition kinetics. Nucleotides which do not fit within the site of phosphodiesterase activity show non-competitive inhibition kinetics.
Date: November 1, 1979
Creator: Hollis, Donald F.
Partner: UNT Libraries Government Documents Department

INDEPENDENT PARTICLE ASPECTS OF NUCLEAR DYNAMICS

Description: A generalization of the independent particle model from nuclear statics to nuclear dynamics is sought. Attention is centered on the average behavior of nuclear dynamics, as opposed to detailed behavior, such as that characteristic of shell effects in nuclear statics. In many situations, all that is needed is a model of dissipation in nuclear dynamics. Completely independent nucleons produce dissipation only when they interact with the surface of a nucleus or when they cross from one nucleus to another. The first possibility manifests itself whenever a nuclear surface deforms. Dissipation is then described by a simple 'wall formula.' The second mechanism for dissipation is relevant whenever two nuclei are moving relative to one another and are in sufficient contact that nucleons can move between them. Another simple expression, the 'window formula,' describes dissipation in this case. Neither of the two formulae has any free parameters.
Date: May 1, 1979
Creator: Robel, M.C.
Partner: UNT Libraries Government Documents Department

A comparison of thermogenesis by selected substrates on hypothermic rat liver

Description: The thermogenic effects in hypothermia of four substrates--alanine, glycine, ethano, and pyruvate - were studied in seventeen experiments. Albino rats were decapitated, and their livers were removed. The livers were homogenized with phosphate buffer at -5° C. After equilibration in a refrigerated Warburg apparatus at 20° C, the substrates were added and tissue respiration was recorded over three hours.
Date: August 1979
Creator: Long, James T.
Partner: UNT Libraries

Iron status of students at North Texas State University

Description: Hematocrit, serum-iron and iron-binding capacity were used to test the iron status of a sample of fifty-six volunteer students. Subjects completed a questionnaire to examine whether a correlation exists between iron status and iron knowledge.
Date: May 1979
Creator: Orgeron, Judy
Partner: UNT Libraries

An investigation of the preparation methods and needs of elementary school teachers visiting the Dallas Museum of Fine Arts

Description: This study concerned the methods in which fourth and fifth grade teachers in one of the larger suburbs of Dallas, Texas, prepared themselves and their classes for a visit to the Dallas Museum of Fine Arts. Twenty teachers who had visited the Dallas museum in the last two years were interviewed using a validated interview questionnaire.
Date: August 1979
Creator: Stubbs, Vicki Ann
Partner: UNT Libraries

An assessment of the stock market effects of proposed accounting changes in the oil and gas industry

Description: This dissertation research addresses the question of whether the issuance of the FASB and SEC proposals had any effect on the common stock values of oil and gas producers. Of primary interest is a determination of the differential impact of these proposals on stock values of full-cost versus successful efforts firms.
Date: August 1979
Creator: Etebari-Khorasgani, Ahmad
Partner: UNT Libraries

The development and management of human resources in Iran

Description: The problem with which this study is concerned is that of determining and analyzing the problems of human resources created in Iran. These problems are rooted deeply and stream from Iranian history, culture, and social environment. The main purposes of this study are three. The first is to determine and analyze problems of human resources created in Iran, including social environment, education, and employment. The second is to study and evaluate the manpower policy of Iranian economic development. The third is to apply human resource development in planning, educating, training, and developing the human resources required for the economic development of Iran.
Date: May 1979
Creator: Sharifzadeh, Mansour
Partner: UNT Libraries

British socialists and the Second International, 1885-1914

Description: The purpose of the present study is to identify the participants in the British socialist movement who worked in the Second International. The Second International was a confederation of socialist groups from over twenty nations who tried to carry on the work of Marx in the years of its existence, from 1889 to the outbreak of World War One in 1914. the study explains the political work of the Independent Labour Party, the Social Democratic Federation, and the Fabian Society, all of which gained focus from their membership in the International.
Date: August 1979
Creator: Nash, Carolyn Sue Kirby
Partner: UNT Libraries

The organ works of Ottorino Respighi together with three recitals of selected works of J. S. Bach, W. Bolcom, J. Guillou, J. Langlais, F. Liszt, C. Tournemire and L. Vierne

Description: This dissertation deals with Respighi's output for the organ which consists of the Three Preludes for organ solo, a Suite in G for strings and organ, two transcriptions (the Vitali Ciaccona, and a Suit by Bach), both for violin and organ, and various organ parts in the symphonic poems, operas, and orchestral works.
Date: August 1979
Creator: Ferré, Susan
Partner: UNT Libraries

A study to determine the effect of a program of rhythmic training on the ability to perform music at sight

Description: The purpose of this study was to determine the effect of a program of rhythmic training upon the ability to perform music at sight. In addition to examining the overall sight-reading improvement, rhythm reading improvement was also investigated. The program of rhythmic training utilized the Temporal Acuity Products (TAP) system as the rhythm training aid.
Date: May 1979
Creator: Massingale, George W.
Partner: UNT Libraries

Studies of Electron Correlation in the Photoionization Process

Description: Electron correlation is a result of the interaction of two or more electrons confined in a region of space, and may conveniently be treated under the formalism of configuration interaction (CI). Photoionization provides a rather direct experimental method for studying configuration interaction. The types of CI involved in the photoionization process can be divided into three categories: initial state configuration interaction (ISCI), final ionic state configuration interaction (FISCI), and continuum state configuration interaction (CSCI). This thesis deals with experimental studies which reveal how the various types of CI may become manifested in photoionization. The experimental methods utilized in this work are photoelectron spectroscopy (PES), electron impact spectroscopy (EIS), and time-resolved fluorescence spectroscopy. The EIS was carried out following the discovery that the UV lamp on a Perkin-Elmer photoelectron spectrometer could be utilized as a source of low energy electrons. The time-resolved fluorescence work utilized both the tunability and the time structure of the radiation available at the Stanford Synchrotron Radiation Laboratory (SSRL). A commercial photoelectron spectrometer equipped with a conventional UV lamp (Hei, Nei) was employed for some of the PES studies, and a novel time-of-flight photoelectron spectrometer was developed for the PES work performed using synchrotron radiation. The PES of Ba, Sm, Eu, and Yb was studied using both Hei (22.22 eV) and Nei (16.85 eV) radiation. Satellite structure observed in these spectra using Nei (and for Yb, Hei also) radiation could be satisfactorily explained by ISCI alone. The Hei spectra of Sm, Eu, and, in particular, Ba showed dramatic changes in the satellite population which could only be explained by a new mechanism, autoionization, which is a special form of CSCI. The detailed nature of this mechanism was explored in Ba using synchrotron radiation. It was found that the autoionizing level decays preferentially via an Auger type mechanism. ...
Date: March 1, 1979
Creator: Rosenberg, Richard Allen
Partner: UNT Libraries Government Documents Department