Partner
Oklahoma Historical Society
531
UNT Libraries Government Documents Department
301
UNT Libraries Special Collections
294
UNT Libraries
124
Texas Historical Commission
55
UT San Antonio Libraries Special Collections
35
Sterling Municipal Library
27
Cooke County Library
26
Calhoun County Public Library
23
Keystone Crossroads Historical Society
15
78 More
Collection
Oklahoma Publishing Company Photography Collection
371
Texas Digital Newspaper Program
369
KXAS-NBC 5 News Collection
230
Office of Scientific & Technical Information Technical Reports
219
Tocker Foundation Grant
186
Oklahoma Digital Newspaper Program
185
UNT Theses and Dissertations
103
THC National Register Collection
51
Texas Cultures Online
36
Texas State Publications
34
133 More
Degree Department
Department of Psychology
15
Department of Higher and Adult Education
8
Department of Chemistry
5
School of Music
5
Department of Biological Sciences
4
Department of Management
4
Graduate Studies in English
4
College of Education
3
Department of Biochemistry
3
Department of Counselor Education
3
37 More
Degree Discipline
Degree Level
Country
States
Year
Month
Language
Results:
1 - 24 of
1,745
next
65 Minutes, May-August 1988
Bimonthly newsletter of Denton Boy Scout Troop 65 containing a list of upcoming events, news and announcements, and other information for members.
Date:
August 1988
Creator:
Boy Scouts of America. Troop 65 (Denton, Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
1952 ALF Eng. (8-88)
Photograph of ECFD 1952 American LaFrance engine. Photo taken on the east side of the station. (August, 1988)
Date:
August 1988
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
1987 Annual Report on Low-Level Radioactive Waste Management Progress: Report to Congress in Response to Public Law 99-240
In response to Section 7(b) of the Low-Level Radioactive Waste Policy Amendments Act of 1985 (Public Law 99-240), this report summarizes the progress of states and low-level radioactive waste compacts in 1987 in establishing new low-level waste disposal facilities. It also reports the volume of low-level waste received for disposal in 1987 by commercially operated low-level waste disposal facilities.
Date:
August 1, 1988
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
[1988-89 Calendar of Events]
Document listing planned events for the years 1988 and 1989 for the Junior Black Academy of Arts and Letters.
Date:
August 1988
Creator:
Junior Black Academy of Arts and Letters
Object Type:
Text
System:
The UNT Digital Library
Acoustical properties of drill strings
The recovery of petrochemical and geothermal resources requires extensive drilling of wells to increasingly greater depths. Real-time collection and telemetry of data about the drilling process while it occurs thousands of feet below the surface is an effective way of improving the efficiency of drilling operations. Unfortunately, due to hostile down-hole environments, telemetry of this data is an extremely difficult problem. Currently, commercial systems transmit data to the surface by producing pressure pulses within the portion of the drilling mud enclosed in the hollow steel drill string. Transmission rates are between two and four data bits per second. Any system capable of raising data rates without increasing the complexity of the drilling process will have significant economic impact. One alternative system is based upon acoustical carrier waves generated within the drill string itself. If developed, this method would accommodate data rates up to 100 bits per second. Unfortunately, the drill string is a periodic structure of pipe and threaded tool joints, the transmission characteristics are very complex and exhibit a banded and dispersive structure. Over the past forty years, attempts to field systems based upon this transmission method have resulted in little success. This paper examines this acoustical transmission problem …
Date:
August 1, 1988
Creator:
Drumheller, D.S.
Object Type:
Report
System:
The UNT Digital Library
Activation characteristics of different steel alloys proposed for near-term fusion reactors
Analyses have been made for different structural alloys proposed for the International Thermonuclear Experimental Reactor (ITER). Candidate alloys include austenitic steels stabilized with nickel (NiSS) or manganese (MnSS). The radioactivity, the decay heat, and the waste disposal rating of each alloy have been calculated for the inboard shield of the ITER design option utilizing water cooled solid breeder blanket. The results show, for the 55 cm inboard shield and after 3 MW.yr/m2 fluence, that the long term activation problems, e.g., radioactive waste, of the MnSS are much less than that of the NiSS. All the MnSS alloys considered are qualified as Class C or better low level waste. Most of the NiSS alloys are not qualified for near surface burial. However, the short term decay heat generation rate for the MnSS is much higher than that of the NiSS. 6 refs., 8 figs., 2 tabs.
Date:
August 1, 1988
Creator:
Attaya, H.; Gohar, Y.; Smith, D. & Baker, C. C.
Object Type:
Article
System:
The UNT Digital Library
Adenylate Energy Charge Determinations of Soil Bacteria Grown in Soil Extract Medium
The adenylate energy charge values of twenty bacteria isolated from soil and cultured in a medium consisting of soil and distilled water were determined by the luciferin-luciferase bioluminescense method. The purpose of this study was to examine the growth and energy charge values of these organisms in soil extract medium, and to determine what effect the addition of glucose has on their energy charge values. Three of the organisms employed in this study showed energy charge values similar to those reported for bacteria grown in enriched media. The remainder of the isolates demonstrated low energy charge values, and scant growth in the soil medium.
Date:
August 1988
Creator:
Rodriguez, Luis A. (Luis Antonio)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Advanced Light Source at Lawrence Berkeley Laboratory
The Advanced Light Source is a national user facility for the production of high brightness and partially coherent X-ray and ultraviolet synchrotron radiation, which is now under construction at Lawrence Berkeley Laboratory. The facility is based on a low emittance electron storage ring, photon beamlines and user support facilities. The lattice optics is optimized for undulator operation and can accommodate up to 11 insertion devices in the straight sections and up to 48 ports in the bending magnets. The nominal electron energy is 1.5 GeV, the horizontal emittance 10/sup -8/ m rad, the circulating current 400 mA in the multibunch mode of operation. The parameters are chosen to cover the photon spectrum from about 5 eV to 1 keV with undulators and up to 10 keV with wigglers. The choice of energy is dictated by the need to cover the above photon energy range with an undulator gap not smaller than 1.4 cm. The facility is now in its second year of construction and is planned to be completed in late 1992 at a total cost of $98.7 million. 4 refs., 8 figs., 1 tab.
Date:
August 1, 1988
Creator:
Cornacchia, M.
Object Type:
Article
System:
The UNT Digital Library
The Age, Volume 9, Number 8, August 1988
Monthly publication containing information related to Chambers County, Texas, including current events of the Chambers County Historical Commission, the Wallisville Heritage Park, and the Chambers County historical and genealogical societies; reprinted newspaper articles about county events and citizens; and historical news and records.
Date:
August 1988
Creator:
Wallisville Heritage Park (Organization)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Albeni Falls Wildlife Protection, Mitigation, and Enhancement Plan, Final Report 1987.
A wildlife impact assessment and mitigation plan has been developed for the US Army Corps of Engineers Albeni Falls Project in northern Idaho. The Habitat Evaluation Procedure (HEP) was used to evaluate pre- and post-construction habitat conditions at the Albeni Falls Project. There were 6617 acres of wetlands converted to open water due to development and operation of the project. Eight evaluation species were selected with impacts expressed in numbers of Habitat Units (HU's). For a given species, one HU is equivalent to one acre of prime habitat. The Albeni Falls Project resulted in estimated losses of 5985 mallard HU's, 4699 Canada goose HU's, 3379 redhead HU's, 4508 breeding bald eagle HU's, 4365 wintering bald eagle HU's, 2286 black-capped chickadee HU's, 1680 white-tailed deer HU's, and 1756 muskrat HU's. The yellow warbler gained 71 HU's. Therefore, total target species estimated impacts were 28,587 HU's. Impacts on peregrine falcons were not quantified in terms of HU's. Projects have been proposed by an interagency team of biologists to mitigate the impacts of Albeni Falls on wildlife. The HEP was used to estimate benefits of proposed mitigation projects to target species. Through a series of proposed protection and enhancement actions, the mitigation plan …
Date:
August 1, 1988
Creator:
Martin, Robert C.
Object Type:
Report
System:
The UNT Digital Library
An alternate method for designing dipole magnet ends
Small bore superconducting dipole magnets, such as those for the SSC, often have problems in the ends. These problems can often be alleviated by spreading out the end windings so that the conductor sees less deformation. This paper presents a new procedure for designing dipole magnet ends which can be applied to magnets with either cylindrical or conical bulged ends to have integrated field multipoles which meet the constraints imposed by the SSC lattice. The method described here permits one to couple existing multiparameter optimization routines (i.e., MINUIT with suitable independent parameter constraints) with a computer code DIPEND, which describes the multiples, so that one can meet any reasonable objective (i.e., minimizing integrated sextupole and decapole). This paper will describe how the computer method was used to analyze the bulged conical ends for an SSC dipole. 6 refs, 6 figs, 2 tabs.
Date:
August 1, 1988
Creator:
Pope, W. L.; Green, M. A.; Peters, C.; Caspi, S. & Taylor, C. E.
Object Type:
Article
System:
The UNT Digital Library
Alternate Substrates and Isotope Effects as a Probe of the Malic Enzyme Reaction
Dissociation constants for alternate dirmcleotide substrates and competitive inhibitors suggest that the dinucleotide binding site of the Ascaris suum NAD-malic enzyme is hydrophobic in the vicinity of the nicotinamide ring. Changes in the divalent metal ion activator from Mg^2+ to Mn^2+ or Cd^2+ results in a decrease in the dinucleotide affinity and an increase in the affinity for malate. Primary deuterium and 13-C isotope effects obtained with the different metal ions suggest either a change in the transition state structure for the hydride transfer or decarboxylation steps or both. Deuterium isotope effects are finite whether reactants are maintained at saturating or limiting concentrations with all the metal ions and dinucleotide substrates used. With Cd^2+ as the divalent metal ion, inactivation of the enzyme occurs whether enzyme alone is present or is turning over. Upon inactivation only Cd^2+ ions are bound to the enzyme which becomes denatured. Modification of the enzyme to give an SCN-enzyme decreases the ability of Cd^2+ to cause inactivation. The modified enzyme generally exhibits increases in K_NAD and K_i_metai and decreases in V_max as the metal size increases from Mg^2+ to Mn^2+ or Cd^2+, indicative of crowding in the site. In all cases, affinity for malate greatly …
Date:
August 1988
Creator:
Gavva, Sandhya Reddy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 66, No. 183, Ed. 1 Monday, August 1, 1988
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 1, 1988
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Analysis of a third-integral resonance
In preparation for the Aladdin experiments, I will give an analytic treatment of a third-integral resonance. By starting from the equations for an actual ring, we can then connect the analytic parameters with the real ring.
Date:
August 1, 1988
Creator:
Symon, K.
Object Type:
Report
System:
The UNT Digital Library
An Analysis of Achievement Test Scores to Determine the Effectiveness of a Remedial English Program in a Small University
Freshmen at Sul Ross State University are required to take tests which are used for placement purposes. One of the tests given is the Nelson-Denny Reading Test which measures comprehension, vocabulary, and reading rate. The scores are used with American College Test or Standard Achievement Test scores to place students in either remedial or regular freshman English. Remedial students, who score below the tenth-grade competency level, are placed in English 1300. Regular students are placed in English 1301 or 1302. Twelve studies were found which had been done in this area since 1980. One was directly related to this study. The Anglo and Hispanic population of the freshman class of 1987 was tested. Blacks were not included as they comprised less than 9 percent of the freshman class. There were 69 students in the experimental group and 162 in the control group. A pretest-posttest design was used. A three-way analysis of variance set up data for statistical testing. The Alpha level was set at .05. The findings indicate a significant difference for Hypothesis 1, which predicted no significant difference in the posttest performance of students required to take English 1300 and the pretest performance of students who were not. Therefore …
Date:
August 1988
Creator:
Grimm, J. Ed (Joseph Ed)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Analysis of Acid Gas Emissions in the Combustion of the Binder Enhanced d-RDF by Ion Chromatography
Waste-to-energy has become an attractive alternative to landfills. One concern in this development is the release of pollutants in the combustion process. The binder enhanced d-RDF pellets satisfy the requirements of environmental acceptance, chemical/biological stability, and being storeable. The acid gas emissions of combusting d-RDF pellets with sulfur-rich coal were analyzed by ion chromatography and decreased when d-RDF pellets were utilized. The results imply the possibility of using d-RDF pellets to substitute for sulfur-rich coal as fuel, and also substantiate the effectiveness of a binder, calcium hydroxide, in decreasing emissions of SOx. In order to perform the analysis of the combustion sample, sampling and sample pretreatment methods prior to the IC analysis and the first derivative detection mode in IC are investigated as well. At least two trapping reagents are necessary for collecting acid gases: one for hydrogen halides, and the other for NOx and SOx. Factors affecting the absorption of acid gases are studied, and the strength of an oxidizing agent is the main factor affecting the collection of NOx and SOx. The absorption preference series of acid gases are determined and the absorption models of acid gases in trapping reagents are derived from the analytical results. To prevent …
Date:
August 1988
Creator:
Jen, Jen-Fon
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Analysis of Smoothing of Proved Oil and Gas Reserve Quantities and an Analysis of Bias and Variability in Revisions of Previous Estimates of Proved Oil and Gas Reserve Quantities
The purpose of this study is to determine whether oil and gas producing companies smooth their ending reserve quantities. Smoothing is defined as a reduction in variance in the trend of ending reserve quantities over time compared to the trend of ending reserve quantities less the hypothesized smoothing variable over time. This study focuses on two variables that are most susceptible to manipulation—revisions of previous estimates and additions. This study also examines whether revisions are positively or negatively biased and the variability of the revisions. The sample consists of 70 companies chosen from oil & Gas Reserve Disclosures: 1980-1984 Survey of 400 Public Companies by Arthur Andersen and Company. For each company, ending reserve quantities for the years 1978-1984 were regressed over time, and the standard deviation of the estimate (SDE) was calculated. Then the ending reserve quantities less the hypothesized smoothing variable were regressed over time, and the SDE was calculated. A linear model and a semi-logarithmic model were used. A smoothing ratio (SR) was determined by dividing the SDE of reserves less the hypothesized smoothing variable by the SDE of ending reserve quantities. An SR greater than one indicates smoothing, and an SR less than one indicates that …
Date:
August 1988
Creator:
Campbell, Alan D.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Analysis of the Elderhostel Experience at One University
This ethnographic, descriptive case study is concerned with an analysis of the Elderhostel experience at one specific university. Questionnaires, evaluation documents, observations, phototographs, and interviews were used in this study to describe the 1988 Elderhostel experience at North Texas State University. Thirty-three persons were initially asked to participate in this study. Twenty-nine agreed and actually completed the questionnaires, and 26 completed the program evaluation. The study is organized and presented in the following manner: Chapter I introduces the study. Chapter II presents a review of related literature addressing those studies directly concerned with the Elderhostel experience, those addressing motivational reasons for participation in adult education, and those dealing with learning abilities, interests, and goals of the elderly in general. Chapter III includes the methods and procedures used to collect and analyze the data. Chapter IV presents the descriptive and statistical analysis of the data, and Chapter V includes the summary, interpretations, conclusions, and recommendations that were derived from the analysis. Major findings of this study include a description of the organization and administration of the program, a description of the educational and co-curricular activities offered and how they were evaluated by the participants, and demographic and motivational data of the …
Date:
August 1988
Creator:
Patterson, Mary Frances, 1948-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Analysis of the Perceptions of Physics Teaching Effectiveness as Viewed by Students and Physics Instructors in Universities in Thailand
The purpose of this study was to investigate the perceptions of the physics instructors, major-physics students, and nonmajor-physics students regarding actual teaching performance and effective teaching performance. The sample consisted of a total of 56 physics instructors, 120 major-physics students, and 120 nonmajor-physics students at eight public universities in Thailand. A total of 53 physics instructors or 94.64 percent, 101 major-physics students or 84.17 percent, and 107 nonmajor-physics students or 89.17 percent responded in this study. Multivariate analysis of variance, univariate analysis, one-way analysis of variance, and multiple regression were used in the follow-up assessment, with the .05 level of significance. The physics instructors, major-physics students, and nonmajor-physics students perceived actual teaching performance in class to be significantly different from effective teaching performance. The three groups rated actual teaching performance on every factor to be less than sffective teaching. There was a significant difference between the physics instructors' perceptions and the major-physics students' perceptions regarding actual teaching performance, and also there was a significant difference between the physics instructors' perceptions and the nonmajor-physics students' perceptions regarding actual teaching performance. However, there was no significant difference between major-and nonmajor-physics students' perceptions regarding actual teaching performance. There was no significant difference among …
Date:
August 1988
Creator:
Chayan Boonyaraksa
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Analysis, Volume 9, Number 8, August 1988
Periodic newsletter discussing information related to legislation, state finance, and other topics related to Texas government. This issue focuses on changes in the Texas economy, including gross state product, examinations of selected industries, budget actions, and more.
Date:
August 1988
Creator:
Texas Research League
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Analytical approximations for x-ray cross sections III
This report updates our previous work that provided analytical approximations to cross sections for both photoelectric absorption of photons by atoms and incoherent scattering of photons by atoms. This representation is convenient for use in programmable calculators and in computer programs to evaluate these cross sections numerically. The results apply to atoms of atomic numbers between 1 and 100 and for photon energiesgreater than or equal to10 eV. The photoelectric cross sections are again approximated by four-term polynomials in reciprocal powers of the photon energy. There are now more fitting intervals, however, than were used previously. The incoherent-scattering cross sections are based on the Klein-Nishina relation, but use simpler approximate equations for efficient computer evaluation. We describe the averaging scheme for applying these atomic results to any composite material. The fitting coefficients are included in tables, and the cross sections are shown graphically. 100 graphs, 1 tab.
Date:
August 1, 1988
Creator:
Biggs, F & Lighthill, R
Object Type:
Report
System:
The UNT Digital Library
Application of high temperature ceramic superconductors (CSC) to commercial tokamak reactors
Ceramic superconductors operating near liquid nitrogen temperature may experience higher heating rates without losing stability, compared conventional superconductors. This will permit cable design with less stabilizer, reducing fabrication costs for large fusion magnets. Magnet performance is studied for different operating current densities in the superconductor, and cost benefits to commercial tokamak reactors are estimated. It appears that 10 kA /center dot/ cm/sup /minus/2/ (at 77 K and /approximately/10 T) is a target current density which must be achieved in order for the ceramic superconductors to compete with conventional materials. At current densities around 50 kA /center dot/ cm/sup /minus/2/ most potential benefits have already been gained, as magnet structural steel begins to dominate the cost at this point. For a steady state reactor reductions of /approximately/7% are forecast for the overall capital cost of the power plant in the best case. An additional /approximately/3% cost saving is possible for pulsed tokamaks. 9 refs., 4 figs., 8 tabs.
Date:
August 1, 1988
Creator:
Ehst, D. A.; Kim, S.; Gohar, Y.; Turner, L.; Smith, D. L. & Mattas, R.
Object Type:
Article
System:
The UNT Digital Library
[Article: AIDS, Judges, and the Right to Medical Care]
Article from the Hastings Center Report about the legal difficulties facing AIDS patients in getting medical care.
Date:
August 1988
Creator:
Hastings Center Report
Object Type:
Article
System:
The UNT Digital Library
Artificial insemination: practice in the United States: summary of a 1987 survey
This background paper presents the results of a study of physician and sperm bank practice of artificial insemination in the United States. It documents the number of women undergoing artificial insemination each year, the annual cost, medical and social screening criteria for women seeking artificial insemination and men who donate semen, the genealogical recordkeeping available to the resulting children, and physician attitudes toward possible changes in artificial insemination practice.
Date:
August 1988
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library