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76,567 Matching Results

Start Over Access Open Access Day 10th Language English

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Results: 1 - 24 of 76,567 next
Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
Single particle behavior in plasmas (open access)

Single particle behavior in plasmas

The paper follows the history of a neutral atom or molecule into a plasma--ionization, dissociation, radiation,--until it becomes a set of charged particles moving in the electromagnetic fields of the plasma system. The various useful forms of the method of averaging are displayed and applied to calculation of constants of motion. The breakdown of these constants is discussed along with some of the implications for fusion systems.
Date: March 10, 1977
Creator: McNamara, B.
Object Type: Report
System: The UNT Digital Library
Analysis of Paraho oil shale products and effluents: an example of the multi-technique approach (open access)

Analysis of Paraho oil shale products and effluents: an example of the multi-technique approach

Inorganic analysis of solid, liquid and gaseous samples from the Paraho Semiworks Retort was completed using a multitechnique approach. The data were statistically analyzed to determine both the precision of each method and to see how closely the various techniques compared. The data were also used to determine the redistribution of 31 trace and major elements in the various effluents, including the offgas for the Paraho Retort operating in the direct mode. The computed mass balances show that approximately 1% or greater fractions of the As, Co, Hg, N, Ni, S and Se are released during retorting and redistributed to the product shale oil, retort water or product offgas. The fraction for these seven elements ranged from almost 1% for Co and Ni to 50 to 60% for Hg and N. Approximately 20% of the S and 5% of the As and Se are released. The mass balance redistribution during retorting for Al, Fe, Mg, V and Zn was observed to be no greater than .05%. These redistribution figures are generally in agreement with previous mass balance studies made for a limited number of elements on laboratory or smaller scale pilot retorts. 7 tables.
Date: June 10, 1979
Creator: Fruchter, J. S.; Wilkerson, C. L.; Evans, J. C. & Sanders, R. W.
Object Type: Article
System: The UNT Digital Library
Supporting Analysis for Thermal Suitability of Fuel Elements for SM-1A Core I Loading (open access)

Supporting Analysis for Thermal Suitability of Fuel Elements for SM-1A Core I Loading

A recommended SM-1A Core I loading chart was derived from available, metallurgically acceptable elements at the SM-1A and SM-1 sites. The derivation was based on local thermal and hydraulic considerations of minimum elementto- element coolant channel clearances. These clearances were determined from field inspection measurements of outer fuel plate spacing, as modified by analytical calculations of plate ripple growth during exposure to reactor operating thermal stresses. (auth)
Date: January 10, 1962
Creator: Brondel, J. O.
Object Type: Report
System: The UNT Digital Library
Extracted current densities from surface conversion sources of negative ions (open access)

Extracted current densities from surface conversion sources of negative ions

The condition for extracting a maximum negative ion current density is found when the product of the radius of the negative ion conversion electrode, the cross-section for negative and positive ion recombination, and the density of positive ions in the ion source equals one. The optimum output is obtained at the highest positive ion density and the smallest electrode radius.
Date: February 10, 1982
Creator: Fink, J.H.
Object Type: Report
System: The UNT Digital Library
Proceedings of the symposium on experiments using enriched antiproton, polarized proton, and polarized antiproton beams at Fermilab energies (open access)

Proceedings of the symposium on experiments using enriched antiproton, polarized proton, and polarized antiproton beams at Fermilab energies

The conference included 10 papers, one of which appeared previously under conference number Conf: 770675-1. Separate abstracts were prepared for the remaining nine papers. (JFP)
Date: June 10, 1977
Creator: Yokosawa, A. (ed.)
Object Type: Article
System: The UNT Digital Library
SOME EXPERIENCES IN THE WELD FABRICATION OF REFRACTORY METALS (open access)

SOME EXPERIENCES IN THE WELD FABRICATION OF REFRACTORY METALS

Discussion is given on the welding fabrication of tungsten, molybdenum, niobium, and tantalum. Properties which make the four refractory metals important are tabulatcd along with titanium which is given for comparison. Extensive evaluation was conducted using the gas, tungsten arc welding process employing both manual and machine welding. Design data were obtained exclusively from machine welded sheet materials. Flash welding, resistance spot welding and brazing, electron beam welding, and high frequency resistance welding processes were also applied to molybdenum alloys. The oxidation of molybdenum, tantalum, and niobium in flowing air at 2000 deg F is also given. (P.C.H.)
Date: February 10, 1961
Creator: Thompson, E.G.
Object Type: Report
System: The UNT Digital Library
Phase I of the Near-Term Hybrid Vehicle Program. Final report (open access)

Phase I of the Near-Term Hybrid Vehicle Program. Final report

Heat engine/electric hybrid vehicles offer the potential of greatly reduced petroleum consumption, compared to conventional vehicles, without the disadvantages of limited performance and operating range associated with pure electric vehicles. This report documents a hybrid vehicle design approach which is aimed at the development of the technology required to achieve this potential, in such a way that it is transferable to the auto industry in the near term. The development of this design approach constituted Phase I of the Near-Term Hybrid Vehicle Program. The major tasks in this program were: mission analysis and performance specification studies; design tradeoff studies; and preliminary design. Detailed reports covering each of these tasks are included as appendices to this report. A fourth task, sensitivity studies, is also included in the report on the design tradeoff studies. Because of the detail with which these appendices cover methodology and results, the body of this report has been prepared as a brief executive summary of the program activities and results, with appropriate references to the detailed material in the appendices.
Date: September 10, 1979
Creator: unknown
Object Type: Report
System: The UNT Digital Library
HANFORD STUDIES FOR EGCR COMBUSTION CHARACTERISTICS. Summary Report (open access)

HANFORD STUDIES FOR EGCR COMBUSTION CHARACTERISTICS. Summary Report

The temperature, geometry, and flow conditions which exist in the EGCR were duplicated in a mock-up designated as the EGCR Burning Rig to establish the combustion conditions in the reactor. The conditions under which the EGCR Burning Rig will ignite were established and an analytical model was developed which predicts these conditions. Because the Burning Rig cannot exactly dupIicate the reactor situation the final prediction of the safety of the EGCR must rest on computer calculations employing the above analytical model. No advantage in retarding combustion was found in using silicon carbide coated fuel sleeves. The negative results of these tests are due both to the particular geometry of the EGCR moderator and sleeves as well as to the fact that all sleeves tested contained imperfections in the coatings. Chlorine was demonstrated to be an effective agent for extinguishing graphite fires. Concentrations in air of about 1% were observed to extinguish graphite fires at temperatures as high as 1000 deg C. (auth)
Date: October 10, 1961
Creator: de Halas, D.R.; Dahl, R.E. & Jackson, J.L.
Object Type: Report
System: The UNT Digital Library
Tar sand extraction by steam stimulation and steam drive: measurement of physical properties (open access)

Tar sand extraction by steam stimulation and steam drive: measurement of physical properties

The measurement of the following thermophysical properties of Utah tar sands is in progress: thermal conductivity, specific heat relative permeability, and viscosity (of the recovered bitumen). During the report period (October 1, 1978 to November 1, 1979), experimental procedures have been developed and a basic data set has been measured. Additionally, standard core analysis has been performed for four drill sites in the Asphalt Ridge, Utah area.
Date: September 10, 1980
Creator: Linberg, W.R.
Object Type: Report
System: The UNT Digital Library
Delayed Failure Hydrogen Embrittlement of Zirconium. Summary Report, September 15, 1961 to September 14, 1962 (open access)

Delayed Failure Hydrogen Embrittlement of Zirconium. Summary Report, September 15, 1961 to September 14, 1962

The extent to which zirconium and zirconium alloys exhibit delayed failure (static fatigue) as caused by a combination of absorbed hydrogen and applied stress was investigated. Susceptibility to time-dependent fracture was evaluated for unalloyed zirconium and Zircaloy-2 with 200 and 500 ppm hydrogen as well as for an experimental Zr Al-Sn-Mo alloy and the Canadian Zr-2.5Nb cladding material. For unalloyed zirconium and Zircaloy-2 containing up to 500 ppm hydrogen, no room-temperature, timedependent fracture occurred which could be definitely attributed to the delayed failure phenomenon; an increased grain size, 20% cold deformation by rolling, or corrosion in 750 deg F steam did not significantly affect this behavior. The curve of applied stress versus time to failure at room temperature for the high-strength Zr-Al-Sn--Mo alloy containing 500 ppm hydrcgen established a strong susceptibility to delayed failure due to hydrogen absorption; studies on vacuum-annealed material showed no failures. Further, reduced temperature indicated that the occurrence of static fatigue is temperature dependent. Data for heattreated Zr 2.5Nb containing 500 ppm hydrogen indicated that this material is moderately sensitive to delayed failure at room temperature; higher hydrogen contents caused a greatly increased susceptibility to time-dependent fracture. (auth)
Date: October 10, 1962
Creator: Weinstein, D. & Holtz, F. C.
Object Type: Report
System: The UNT Digital Library
REACTIVITY CALIBRATIONS AND FISSION-RATE DISTRIBUTIONS IN AN UNMODERATED, UNREFLECTED URANIUM-MOLYBDENUM ALLOY RESEARCH PROGRAM (open access)

REACTIVITY CALIBRATIONS AND FISSION-RATE DISTRIBUTIONS IN AN UNMODERATED, UNREFLECTED URANIUM-MOLYBDENUM ALLOY RESEARCH PROGRAM

Completion of zero-power critical experiments with the ORNL Health Physics Research Reactor is reported. A description is given concerning these experiments which were used to determine the critical size, fission-rate distributions, reactivity calibrations of its movable parts, the temperature coefficient of reactivity, and the reactivity effects of the presence of neutron- reflecting materials adjacent to the reactor. (J.R.D.)
Date: May 10, 1962
Creator: Mihalczo, J.T.
Object Type: Report
System: The UNT Digital Library
Petroleum marketing monthly, October 1991. [Contains glossary] (open access)

Petroleum marketing monthly, October 1991. [Contains glossary]

This report is designed to give information and statistical data about a variety of crude oils and refined petroleum products. The publication provides statistics on crude oil costs and refined petroleum products sales for use by industry, government, private sector analysts, educational institutions, and consumers. Data on crude oil include the domestic first purchase price, the f.o.b. and landed cost of imported crude oil, and the refiner's acquisition cost of crude oil. Sales data for motor gasoline, distillates, residuals, aviation fuels, kerosene, and propane are presented. 12 figs., 55 tabs.
Date: October 10, 1991
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Kilowatt Isotope Power System: component test report for the ground demonstration system accumulator. 77-KIPS-100 (open access)

Kilowatt Isotope Power System: component test report for the ground demonstration system accumulator. 77-KIPS-100

The purpose of this test was to demonstrate that the system accumulator for the developmental program to be conducted on the Kilowatt Isotope Power System (KIPS) fulfilled the requirements of the test procedure (TP 400) test objectives. The results of the expulsion testing performed on the system accumulator are presented.
Date: October 10, 1977
Creator: Brainard, E.L.
Object Type: Report
System: The UNT Digital Library
The Military Selective Service Act of 1967: A Survey of Proposals and Studies Concerning Its Revision or Replacement (open access)

The Military Selective Service Act of 1967: A Survey of Proposals and Studies Concerning Its Revision or Replacement

This report documents major proposals asking for the reform of the Universal Military Training and Service Act, along with the opinions of the Marshall Commission, Clark Panel, and the President on each proposal.
Date: April 10, 1968
Creator: Stillson, Albert C.
Object Type: Report
System: The UNT Digital Library
A Summary of Task Force Report: Organized Crime (open access)

A Summary of Task Force Report: Organized Crime

This report addresses the Organized Crime Task Force and a summary of the basic report.
Date: April 10, 1969
Creator: Vialet, Joyce
Object Type: Report
System: The UNT Digital Library
[News Script: Mum growers meet] (open access)

[News Script: Mum growers meet]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: November 10, 1968
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[Letter from Albert Thomas to Bill McCarter and Jack Davis, November 10, 1993] (open access)

[Letter from Albert Thomas to Bill McCarter and Jack Davis, November 10, 1993]

Photocopy of a letter from Albert Thomas, Superintendent of Denton ISD, to Jack Davis and Bill McCarter, co-directors of North Texas Institute for Educators on the Visual Arts. To confirm Denton ISD's commitment as full partner to NTIEVA. Thomas writes that Sandra Parker, Associate Director and Site Coordinator for Denton ISD, will contribute 5% of her time during the 1993 - 1994 calendar year to activities related to staff development and implementation efforts of the discipline-based art education (DBAE). Along with six other art teachers who will devote time towards the program. Attached to the letter is a stipend worksheet for the faculty involved with the institute based on current salaries.
Date: November 10, 1993
Creator: Thomas, Albert
Object Type: Letter
System: The UNT Digital Library
[Letter from T.A. Fassburg to Jack Davis, April 10, 1990] (open access)

[Letter from T.A. Fassburg to Jack Davis, April 10, 1990]

Photocopy of a letter from T.A. Tassburg, Vice President of Public Affairs at Frito-Lay, Inc., to Jack Davis. Tassburg thanks Davis for his invitation to be apart of the North Texas Institute for Educators on the Visual Arts committee, but humbly declines due to conflicting schedules and time constraints.
Date: April 10, 1990
Creator: Fassburg, T.A.
Object Type: Letter
System: The UNT Digital Library
[Letter from Nancy Reynolds to Vicki Rosenberg, November 10, 1992] (open access)

[Letter from Nancy Reynolds to Vicki Rosenberg, November 10, 1992]

Photocopy of a letter from Nancy Reynolds, NTIEVA, to Vicki Rosenberg, program officer for the Getty Center, in regards to Rosenberg's interest in the Boys & Girls Clubs of Fort Worth. Reynolds states the the Club initially wanted NTIEVA to develop an art program for the six branches of Fort Worth, however, the person in charge of the program has no real power to implement the art program and their program director is opposed to the idea in general. Reynolds writes that the participants of the seminars feel that an art program is important and they want to implement programs into their branches, but unsure if progress will be made.
Date: November 10, 1992
Creator: Reynolds, Nancy
Object Type: Letter
System: The UNT Digital Library
[Letter from Bill McCarter to Howard Dunn and Janice Wiggins, March 10, 1990] (open access)

[Letter from Bill McCarter to Howard Dunn and Janice Wiggins, March 10, 1990]

Photocopy of a letter from Bill McCarter, co-director of North Texas Institute for Educators on the Visual Arts, to Howard Dunn and Janice Wiggins, Dallas ISD. Inviting Dallas Independent School District into a five year plan with NTIEVA, since their last minute implementation process prevented Dallas from becoming part of the Institute previously. Details about what is required from the district is written at the end of the letter and that McCarter will be happy to discuss further details of financial obligations.
Date: May 10, 1990
Creator: McCarter, William
Object Type: Letter
System: The UNT Digital Library
[Letter from Jack Davis, Bill McCarter and Nancy Reynolds to Gert K. Peck, March 10, 1994] (open access)

[Letter from Jack Davis, Bill McCarter and Nancy Reynolds to Gert K. Peck, March 10, 1994]

Photocopy of a letter from Jack Davis, Bill McCarter and Nancy Reynolds, North Texas Institute for Educators on the Visual Arts, to Gert K. Peck, Superintendent for Anthony ISD. Inviting Peck to attend the "Learning through Art: The Integration of Art Across the Curriculum" at El Paso ISD Professional Development Center, on March 31, 1994. The seminar is being presented by North Texas Institute for Educators on the Visual Arts, and will address the correlation between art and Texas Assessment of Academic Skills, TAAS. The presentation will also focus on the discipline-based art education, DBAE. Davis, McCarter and Reynolds hope Peck can attend.
Date: March 10, 1994
Creator: Davis, Donald Jack; McCarter, William & Reynolds, Nancy
Object Type: Letter
System: The UNT Digital Library
[Letter from Nancy Cason to Sue Pacey, October 10, 1991] (open access)

[Letter from Nancy Cason to Sue Pacey, October 10, 1991]

Photocopy of a letter from Nancy Cason, Project Coordinator of North Texas Institute for Educators on the Visual Arts, to Sue Pacey, Young Audiences of Greater Dallas. Inviting Pacey and other staff members of Young Audiences to three live, interactive teleworkshops on the arts. Cason writes that their institute has arranged for viewing space and the use of an 800 telephone line in Chilton Hall of UNT campus for the upcoming events. Attached to the letter is an program list of the teleworkshops and their description details.
Date: October 10, 1991
Creator: Cason, Nancy
Object Type: Letter
System: The UNT Digital Library
[Letter from Chad Woolery to Bill McCarter, Jack Davis and Nancy Reynolds, May 10, 1994] (open access)

[Letter from Chad Woolery to Bill McCarter, Jack Davis and Nancy Reynolds, May 10, 1994]

Photocopy of a letter from Chad Woolery, General Superintendent of Dallas ISD, to Bill McCarter, Jack Davis and Nancy Reynolds, North Texas Institute for Educators on the Visual Arts. Thanking McCarter and co., for his invitation to a special Administrators Day at the Dallas Museum of Art, however, Woolery is concerned that there are only five of the Dallas I.S.D. areas being represented in the group of invitee and that within his letter he asks the area directors to ensure that all ten areas are included on that day by replacement or addition. Woolery ends the letter by stating that due to his schedule, it will not permit for his full attendance but he'll share lunch and some of the afternoon's agenda what he can. Copied on the letter is Bill Cormack.
Date: May 10, 1994
Creator: Woolery, Chad
Object Type: Letter
System: The UNT Digital Library
[Letter from Nancy Reynolds to Allison Perkins, August 10, 1992] (open access)

[Letter from Nancy Reynolds to Allison Perkins, August 10, 1992]

Photocopy of a letter from Nancy Reynolds, Project Coordinator of North Texas Institute for Educators on the Visual Arts, to Allison Perkins, Amon Carter Museum. To discuss the upcoming newsletter that Reynolds would like to distribute in September but needs information from Perkins on the Charlie Russell presentation scheduled for October. As well as inform Perkins that the institute is planning to offer a retreat for the consortium members at Ghost Ranch Conference Center in Abiquiu, New Mexico from March 14 - 18, 1993, and requests some Georgia O'Keefee's slides for a short presentation at the conference.
Date: August 10, 1992
Creator: Reynolds, Nancy
Object Type: Letter
System: The UNT Digital Library