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Effect of Amino Acids on Growth and Cartenogenesis in Corynebacterium Species Strain 7E1C

Description: Studies were evaluated on the effects of known growth factors on the growth and carotenogenesis of Corynebacterium species strain 7ElC. The complex medium, Tryptic Soy Broth,was found to stimulate growth and production of more pigment in the light and in the dark than did a mineral salts-glucose medium. A complete amino acid mixture added to LSG enhanced carotenogenesis in the dark in Corynebacterium 7ElC, while B-vitamins retarded carotenogenesis. No absolute requirement for one or more amino … more
Date: May 1977
Creator: Coughran, Carolyn S.
Partner: UNT Libraries
open access

Debussy's Use of the Motive in Thematic Construction as Found in "Images I" for Piano

Description: This study seeks to discover the extent and manner of Debussy's use of the motive in thematic material. A total of 40 melodic examples were analyzed in order to show their relationship to a single motive, a three-note figure having a step-leap relationship. Using eighty-four series of examples, the study shows the melodies analyzed to be 85% motive-derived. The study concludes, therefore, that Images I is a remarkably economical work, using a single three-note motive as a unifying and developme… more
Date: May 1977
Creator: Sheridan, John F.
Partner: UNT Libraries
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The Effect of Light on Carotenoid Synthesis in Corynebacterium 7E1C

Description: The effects of light, light "mimicking" chemicals, and protein synthesis inhibitors on the photo-induced carotenogenesis of Corynebacterium 7EIC were studied. Changes in the dosage of fluorescent light applied to dark grown cells showed a dose related carotenogenic response. Maintaining the same dosage but varying the wavelength of monochromatic light revealed that light with a wavelength of 280 to 450nm was responsible for photo-induction. It further showed a peak of photo-induction between th… more
Date: May 1977
Creator: Endicott, George R.
Partner: UNT Libraries
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Chemical shift anisotropies of /sup 1/H in H/sub 2/O(s), H/sub 2/S(s), and C/sub 6/H/sub 6/(s)

Description: The proton NMR in powdered samples of H/sub 2/O(s), H/sub 2/S(s), and C/sub 6/H/sub 6/(s) have been studied by multiple pulse line narrowing techniques. The resultant spectra provide nuclear magnetic shielding tensors that are (at least approximately) axially symmetric. The anisotropy is 34.2 +- 1.0 ppM for ice, 11.1 +- 1.0 ppM for the highest-temperature phase of solid hydrogen sulfide, and -5.3 +- 0.3 for benzene. Comparisons are made with previous experimental and theoretical work.
Date: October 1, 1977
Creator: Ryan, L. M.
Partner: UNT Libraries Government Documents Department
open access

Target Thickness Dependence of Cu K X-Ray Production for Ions Moving in Thin Solid Cu Targets

Description: Measurements of the target thickness dependence of the target x-ray production yield for incident fast heavy ions are reported for thin solid Cu targets as a function of both incident projectile atomic number and energy. The incident ions were F, Al, Si, S, and CI. The charge state of the incident ions was varied in each case to study the target x-ray production for projectiles which had an initial charge state, q, of q = Z₁, q = Z₁ - 1, and q < Z₁ - 1 for F, Al, Si, and S ions and q = Z₁ - 1 a… more
Date: December 1977
Creator: Gardner, Raymond K.
Partner: UNT Libraries
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OPTICAL DIFFERENCE FREQUENCY GENERATION OF FAR INFRARED RADIATION

Description: Three investigations of difference frequency generation (DFG) of far-infrared radiation by optical mixing are described: a theory of DFG by monochromatic, focused Gaussian pump laser beams, a theory of DFG by a picosecond pump laser pulse, and an experiment using ruby-pumped dye lasers. First, the theory of far-infrared generation by optical mixing of monochromatic, focused Gaussian beams in a uniaxial crystal is developed, taking into account the effects of diffraction, absorption, double refr… more
Date: July 1, 1977
Creator: Morris, J. R.
Partner: UNT Libraries Government Documents Department
open access

The Relation Between Carbon Assimilation and Biomass Dynamics in a Phytoplankton Community

Description: Production dynamics in the phytoplankton community of a mesotrophic Texas reservoir were measured weekly over a four month period using 14C incubation and ATP assay methodologies. Assimilation values of 14C ranged from 0.2 to 45 ug C 1 hr1 - . Significant positive and occasionally negative changes in biomass (i.e. viable organic carbon) were observed in short term (4 hr) in situ incubations juxtapo-sitioned with the 14C experiments; viable organic carbon production, estimated with the ATP assay… more
Date: December 1977
Creator: Wilcox, Douglas P.
Partner: UNT Libraries
open access

Colchicine Reversibly Inhibits Electrical Activity in Arthropod Mechanoreceptors

Description: Dendrites of cockroach tibial spine mechanoreceptors contain hundreds of free microtubules, which may have some relation to the generation of electrical activity. Deflection of a spine produces a train of action potentials. Continuous perfusion over a period of 4 hours results in no response decrement. Perfusion with 10mM colchicine reversibly inhibits the response within 5-7 minutes. Irreversible inhibition is produced by perfusion with 1mM vinblastine sulfate in perfusion solution containing … more
Date: August 1977
Creator: Reagan, Paul D.
Partner: UNT Libraries
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Hydrodenitrogenation of Quinoline and Acridine

Description: The hydrodenitrogenation of quinoline and of acridine was studied in a batch autoclave reactor between 342 and 353/sup 0/C and between 500 and 2000 psig. The several commercial hydrotreating catalysts examined decreased in activity in the following order for quinoline hydrodenitrogenation: Ni--Mo/Al/sub 2/O/sub 3/, Ni--W/Al/sub 2/O/sub 3/, Ni--W/SiO/sub 2/--Al/sub 2/O/sub 3/, and Co--Mo/Al/sub 2/O/sub 3/. The total nitrogen removal rate for quinoline was slightly greater than that for acridine … more
Date: June 1977
Creator: Reiff, Edward Kenneth, Jr.
Partner: UNT Libraries Government Documents Department
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Low temperature heat capacity of lutetium and lutetium hydrogen alloys

Description: The heat capacity of high purity electrotransport refined lutetium was measured between 1 and 20/sup 0/K. Results for theta/sub D/ were in excellent agreement with theta values determined from elastic constant measurements. The heat capacity of a series of lutetium-hydrogen solid solution alloys was determined and results showed an increase in ..gamma.. from 8.2 to about 11.3 mJ/g-atom-K/sup 2/ for hydrogen content increasing from zero to about one atomic percent. Above one percent hydrogen ..g… more
Date: October 1, 1977
Creator: Thome, D. K.
Partner: UNT Libraries Government Documents Department
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Boundary Conditions of Several Variables Relative to the Robustness of Analysis of Variance Under Violation of the Assumption of Homogeneity of Variances

Description: The purpose of this study is to determine boundary conditions associated with the number of treatment groups (K), the common treatment group sample size (n), and an index of the extent to which the assumption of equality of treatment population variances is violated (Q) with regard to user confidence in application of the one-way analysis of variance F-test for determining equality of treatment population means. The study concludes that the analysis of variance F-test is robust when the number … more
Date: December 1977
Creator: Grizzle, Grady M.
Partner: UNT Libraries
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Characterization of sialon-type materials

Description: Four sialon-type materials using volcanic ash as a raw material were characterized and some of their properties were determined. The M3 and M4 materials were identified as ..beta../sup 1/--Si/sub 3/N/sub 4/ sialons; their principal constituent is silicon. The M2 material was identified as a 15R-A1N polytype sialon whose principal constituent is aluminum. The M1 material is a mixture of the two types. An overview of results showing the general structural formulae and the relative order of the ma… more
Date: June 1, 1977
Creator: Spencer, P. N.
Partner: UNT Libraries Government Documents Department
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A Validity and Reliability Study of Value Systems Analysis in Counseling and Psychotherapy

Description: The purposes of the study were (1) to assess the validity and reliability of Values for Helpers, (2) to determine whether the test would be a usable instrument for analysis of value systems of mental health professionals, (3) to provide information on possible utilization of the test as a measurement tool for assessing the quality of relationship skills of helpers, and (4) to provide information of a heuristic nature for future research with Values for Helpers. To accomplish these purposes, the… more
Date: May 1977
Creator: Rishe, Harvey Lawrence
Partner: UNT Libraries
open access

The Effects of Hypothermia on the Release of Cardiac Enzymes

Description: The myocardium is known to release CPK, LDH1 , and GOT in response to ischemia as a result of myocardial infarction. This study was designed to induce the release of cardiac enzymes without adversely effecting the myocardium by perfusion hypothermia, thereby suggesting that these enzymes are not as specific in the diagnosis of myocardial infarction as once thought. Hypothermia was by in vivo perfusion of the left anterior descending coronary artery. Enzyme activity was measured from sera sample… more
Date: August 1977
Creator: Strawn, William B.
Partner: UNT Libraries
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Use of a semiconductor laser in infrared spectroscopy

Description: A semiconductor laser has certain properties which makes its use desirable as a continuous monitor of atmospheric pollutants. Its energy output is concentrated in widely separated energy modes of very narrow bandwidths (less than 10/sup -5/ cm/sup -1/) which can be centered on one infrared absorption line of one gas. This makes the laser quite selective. The energy in each mode is typically greater than 200 ..mu.. watts, and, because of the laser&#x27;s small size, its light energy can be colli… more
Date: December 1, 1977
Creator: Morris, R. N.
Partner: UNT Libraries Government Documents Department
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A Study of Timbre Modulation Using a Digital Computer, with Applications to Composition

Description: This paper presents a means of modulating timbre in digital sound synthesis using additive processes . A major portion of the paper is a computer program, written in Pl/1, which combines this additive method of timbre modulation with several other sound manipulation ideas to form a compositional program. This program-which is named CART for Computer Aided Rotational Translation-provides input for the Music 360 digital sound synthesis program. The paper contains three major parts: (1) a discussi… more
Date: December 1977
Creator: Hamilton, Richard L.
Partner: UNT Libraries
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Polarized electronic spectra for the crystals of three compounds, potassium tetrabromoplatinate(II) dihydrate, tetraethylammonium hexabromodiplatinate(II), and tetra-. mu. -glycine-dimolybdenum (II) sulfate tetrahydrate

Description: The polarized absorption spectra for K/sub 2/PtBr/sub 4/ . 2H/sub 2/O, (N(C/sub 2/H/sub 5/)/sub 4/)/sub 2/PtBr/sub 6/, and Mo/sub 2/(O/sub 2/CCH/sub 2/NH/sub 3/)/sub 4/(SO/sub 4/)/sub 2/ . 4H/sub 2/O have been recorded at 300 and 15/sup 0/K. In K/sub 2/PtBr/sub 4/ . 2H/sub 2/O the bands at 24,000 and 27,000 cm/sup -1/ in both a- and b-polarizations appear to be vibronically induced. The energy spacing of the vibrational structure was noted to be somewhat higher at 180 cm/sup -1/ than for the an… more
Date: June 1, 1977
Creator: Peters, T. J.
Partner: UNT Libraries Government Documents Department
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Effect of 2,450 MHz Microwave Radiation on Microorganisms

Description: The effect of microwave radiation on soil bacteria in situ has been studied in both lab and field conditions. Radiation and thermal profiles show that heterotrophic bacteria, spores, fungi, and actinomycetes were not affected by total microwave radiations over the range 0 to 80 seconds of exposure at a net input of 1 KW of intensity. Nitrogen-fixing bacteria and nitrifying bacteria were also resistant to these doses. The soil microorganisms were inactivated as a function of microwave radiation … more
Date: May 1977
Creator: Wu, Jung Fu
Partner: UNT Libraries
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Blessed are the Meek

Description: Blessed are the Meek is an original composition by John Loring Emery for cello choir and features a narrative story.
Date: August 1977
Creator: Emery, John Loring -- 1955
Partner: UNT Libraries
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Identification of Basic Characteristics of Managing Higher Education by Objectives

Description: The main purpose of this study was to identify basic characteristics of managing higher education by objectives (HEBO). Six interrelated and interdependent research questions , which reflected other purposes of the study, were established. A sixty-two-statement questionnaire, from the review of MBO literature, was developed to use in the study. Statements were categorized into (1) philosophy of the educational enterprise, (2) identification of institutional goals, (3) specification of objective… more
Date: August 1977
Creator: Hedayatnia, Mostafa
Partner: UNT Libraries
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The Formulation of a Theoretical Construct and the Development of an Instrument for the Evaluation of Curricula in Nursing

Description: The problem of this investigation was the development of a systematic method for the evaluation of curricula in baccalaureate nursing programs. The literature in nursing and general education was used to extrapolate theories and concepts for the formulation of a theoretical construct. This construct served as the basis for the evaluation instrument. The major concepts were identified as (1) underlying structure, (2) content of courses within the curriculum, and (3) methods and activities. Eleme… more
Date: May 1977
Creator: Hicks, Frances M.
Partner: UNT Libraries
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Environmental Pollution, Material Scarcity and the Development of Aluminum Recycling Reverse Channels of Distribution

Description: The purpose of this study was to analyze the developing organizational and management paradigms in the aluminum packaging and container industry, where reverse channels of distribution offer an excellent vehicle for studying organizations which are "closing the distribution circle." Based on the analysis, several conclusions are offered. 1. The extent to which primary manufacturers have entered aluminum packaging and container recycling and subsequently developed effective reverse channels of d… more
Date: August 1977
Creator: Ginter, Peter M.
Partner: UNT Libraries
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Magnetic properties of MnPt

Description: The magnetic properties of quenched and annealed powder specimens of MnPt were investigated using x-ray diffraction, magnetization measurements and neutron diffraction techniques. Thin films of MnPt were prepared by rf sputtering techniques and the films were investigated by x-ray diffraction and magnetization measurements. The powder specimens of MnPt were found to be typically antiferromagnetic in an L1/sub 0/ structure with Mn atoms occupying the (001) planes. The Mn moments were antiparalle… more
Date: June 1, 1977
Creator: Severin, C. S.
Partner: UNT Libraries Government Documents Department
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