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1,308 Matching Results

Start Over Access Open Access Year 1994 Day 31st

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(open access)

A 250 GHz microwave interferometer for divertor experiments on DIII-D

A new 250 GHz, two-frequency microwave interferometer system has been developed to diagnose divertor plasmas on DIII-D. This diagnostic will measure the line-averaged density across both the inner and outer, lower divertor legs. With a cut-off density of over 7 {times} 10{sup 14} cm{sup {minus}3}, temporal measurements of ELMs, MARFs and plasma detachment are expected. The outer leg system will use a double pass method while the inner leg system will be single pass. Two special 3D carbon composite tiles are used, one to protect the microwave antennas mounted directly under the strike point and the other as the outer leg reflecting surface. Performance, design constraints, and the thermalmechanical design of the 3D carbon composite tiles are discussed.

Date: January 31, 1994

Creator: James, R. A.; Nilson, D. G.; Stever, R. D.; Hill, D. N. & Casper, T. A.

Object Type: Article

System: The UNT Digital Library

(open access)

Altus Times (Altus, Okla.), Vol. 93, No. 277, Ed. 1 Monday, January 31, 1994

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.

Date: January 31, 1994

Creator: Lomenick, Rick

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

Balanced Dairying: Economics, Volume 14, Number 1, January 1994

Newsletter of the Texas Agricultural Extension Service discussing topics related to economic aspects of raising dairy cows, dairy production, and managing dairy operations. This issue has a feature article about: "Investments in Free Stall Dairy Housing: Estimated Costs, Returns and Risk"

Date: January 31, 1994

Creator: Texas Agricultural Extension Service

Object Type: Journal/Magazine/Newsletter

System: The Portal to Texas History

(open access)

The Baytown Sun (Baytown, Tex.), Vol. 72, No. 79, Ed. 1 Monday, January 31, 1994

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.

Date: January 31, 1994

Creator: Dobbs, Gary

Object Type: Newspaper

System: The Portal to Texas History

(open access)

Burleson Star (Burleson, Tex.), Vol. 29, No. 32, Ed. 1 Monday, January 31, 1994

Semi-weekly newspaper from Burleson, Texas that includes local, state, and national news along with advertising.

Date: January 31, 1994

Creator: Ellertson, Sally

Object Type: Newspaper

System: The Portal to Texas History

(open access)

Chickasha Daily Express (Chickasha, Okla.), Vol. 103, No. 278, Ed. 1 Monday, January 31, 1994

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.

Date: January 31, 1994

Creator: Ferris, Terry

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

Coal-fueled diesel technology development. Final report, March 3, 1988--January 31, 1994

Since 1979, the US Department of Energy has been sponsoring Research and Development programs to use coal as a fuel for diesel engines. In 1984, under the partial sponsorship of the Burlington Northern and Norfolk Southern Railroads, GE completed a 30-month study on the economic viability of a coal-fueled locomotive. In response to a GE proposal to continue researching the economic and technical feasibility of a coal-fueled diesel engine for locomotives, DOE awarded a contract to GE Corporate Research and Development for a three-year program that began in March 1985 and was completed in 1988. That program was divided into two parts: an Economic Assessment Study and a Technical Feasibility Study. The Economic Assessment Study evaluated the benefits to be derived from development of a coal-fueled diesel engine. Seven areas and their economic impact on the use of coal-fueled diesels were examined; impact on railroad infrastructure, expected maintenance cost, environmental considerations, impact of higher capital costs, railroad training and crew costs, beneficiated coal costs for viable economics, and future cost of money. The Technical Feasibility Study used laboratory- and bench-scale experiments to investigate the combustion of coal. The major accomplishments of this study were the development of injection hardware for …

Date: January 31, 1994

Creator: unknown

Object Type: Report

System: The UNT Digital Library

(open access)

Development of the Integrated Environmental Control Model: Cost Models of Selective Catalytic Reduction (SCR) No{sub X} Control Systems. Quarterly Progress Report, October--December 1993

Selective catalytic reduction (SCR) is a process for the post-combustion removal of NO{sub x} from the flue gas of fossil-fuel-fired power plants. SCR is capable of NO{sub x} reduction efficiencies of up to 80 or 90 percent. SCR technology has been applied for treatment of flue gases from a variety of emission sources, including natural gas- and oil-fired gas turbines, process steam boilers in refineries, and coal-fired power plants. SCR applications to coal-fired power plants have occurred in Japan and Germany. Full-scale SCR systems have not been applied to coal-fired power plants in the U.S., although there have been small-scale demonstration projects. Increasingly strict NO{sub x} control requirements are being imposed by various state and local regulatory agencies in the U.S. These requirements may lead to U.S. SCR applications, particularly for plants burning low sulfur coals (Robie et al.). Furthermore, implicit in Title IV of the 1990 Clean Air Act Amendment is a national NO{sub x} emission reduction of 2 million tons per year. Thus, there may be other incentives to adapt SCR technology more generally to U.S. coal-fired power plants with varying coal sulfur contents. However, concern remains over the applicability of SCR technology to U.S. plants burning high …

Date: January 31, 1994

Creator: Frey, H. C. & Rubin, E. S.

Object Type: Report

System: The UNT Digital Library

(open access)

Development & testing of industrial scale, coal fired combustion system, phase 3. Eighth quarterly technical progress report, 1 October, 1993--31 December, 1993

The primary objective of the present Phase 3 effort is to perform the final testing at a 20 MMBtu/hr commercial scale of an air cooled, slagging coal combustor for application to industrial steam boilers and power plants. The focus of the test effort will be on combustor durability, automatic control of the combustor`s operation, and optimum environmental control of emissions inside the combustor. In connection with the latter, the goal is to achieve 0.4 lb/MMBtu of SO{sub 2} emissions, 0.2 lb/MMBtu of NO{sub x} emissions, and 0.02 lb particulates/MMBtu. Meeting the particulate goal will require the use of a baghouse or electrostatic precipitator to augment the nominal slag retention in the combustor. The NO{sub x} emission goal will require a modest improvement over maximum reduction achieved to date in the combustor to a level of 0.26 lb/MMBtu. To reach the SO{sub 2} emissions goal may require a combination of sorbent injection inside the combustor and sorbent injection inside the boiler, especially in high (>3.5%) sulfur coals. Prior to the initiation of the project, SO{sub 2} levels as low as 0.6 lb/MMBtu, equal to 81% reduction in 2% sulfur coals, were measured with boiler injection of calcium hydrate. The final objective …

Date: January 31, 1994

Creator: Zauderer, B.

Object Type: Report

System: The UNT Digital Library

(open access)

Dose rate estimates from irradiated light-water-reactor fuel assemblies in air

It is generally considered that irradiated spent fuel is so radioactive (self-protecting) that it can only be moved and processed with specialized equipment and facilities. However, a small, possibly subnational, group acting in secret with no concern for the environment (other than the reduction of signatures) and willing to incur substantial but not lethal radiation doses, could obtain plutonium by stealing and processing irradiated spent fuel that has cooled for several years. In this paper, we estimate the dose rate at various distances and directions from typical pressurized-water reactor (PWR) and boiling-water reactor (BWR) spent-fuel assemblies as a function of cooling time. Our results show that the dose rate is reduced rapidly for the first ten years after exposure in the reactor, and that it is reduced by a factor of {approx}10 (from the one year dose rate) after 15 years. Even for fuel that has cooled for 15 years, a lethal dose (LD50) of 450 rem would be received at 1 m from the center of the fuel assembly after several minutes. However, moving from 1 to 5 m reduces the dose rate by over a factor of 10, and moving from 1 to 10 m reduces the dose …

Date: January 31, 1994

Creator: Lloyd, W. R.; Sheaffer, M. K. & Sutcliffe, W. G.

Object Type: Report

System: The UNT Digital Library

captions transcript

[Drama and Dr. Culp's Class]

A video of students performing various activates from rehearsing a play, working in a science lab, and working with computers.

Date: January 31, 1994

Creator: University of North Texas. Center for Media Production.

Object Type: Video

System: The UNT Digital Library

(open access)

[Funeral Program for Ollie M. Blanchard, January 31, 1994]

Funeral program for Mrs. Ollie M. Blanchard, born February 27, 1941 and died January 25, 1994. The funeral was held Monday, January 31, 1994 at Second Baptist Church, officiated by Robert L. Jemerson. Funeral arrangements were made through Lewis Funeral Home and she was buried in Fort Sam Houston National Cemetery near San Antonio, Texas.

Date: January 31, 1994

Creator: unknown

Object Type: Pamphlet

System: The Portal to Texas History

(open access)

Heteronuclear probes of coal structure and reactivity. Quarterly report, October--December 1993

This progress report highlights seven achievements on the project. Vacuum impregnation of Ill. No. 6 with PBu{sub 3} raised the sulfur removal from 92 to 99%. Pre-drying the coal does not alter this result. Whereas partial sulfur removal by PBu{sub 3} from dibenzothiophene is catalyzed by Ill. No. 6, graphite is not a catalyst. Whereas FeCl{sub 3} catalyzes quantitative sulfur removal by PBu{sub 3} from dibenzothiophene, zerovalent iron solubilized as Fe(PBu{sub 3}){sub x} in PBu{sub 3} is not. An initial attempt to perform HDS on Ill. No. 6 catalyzed by PBu{sub 3} failed. The {sup 31}P NMR peak at 32 ppm tentatively assigned to PHBu{sub 3}{sup +} was placed in doubt owing to its persistence in the presence of superbase P(MeNCH{sub 2}CH{sub 2}){sub 3}N. Optimum HPLC parameters were established for SOH and ASOH oils (CONSOL coal resids).

Date: January 31, 1994

Creator: Verkade, J. G. & Hall, G.

Object Type: Report

System: The UNT Digital Library

(open access)

International Petroleum Statistics Report, January 1994

The International Petroleum Statistics Report presents data on international oil production, demand, imports, exports, and stocks. The report has four sections. Section 1 contains time series data on world oil production, and on oil demand and stocks in the organization for Economic Cooperation and Development (OECD). This section contains annual data beginning in 1985, and monthly data for the most recent two years. Section 2 presents an oil supply/demand balance for world. This balance is presented in quarterly intervals for the most recent two years. Section 3 presents data on oil imports by OECD countries. This section contains annual data for the most recent year, quarterly data for the most recent two quarters, and monthly data for the most recent twelve months. Section 4 presents annual time series data on world oil production and oil stocks, demand, and trade for the years 1970 through 1992; OECD stocks from 1973 through 1992; and OECD trade from 1982 through 1992.

Date: January 31, 1994

Creator: unknown

Object Type: Report

System: The UNT Digital Library

(open access)

An investigation of the radiolytic stability of a resorcinol-formaldehyde ion exchange resin

Developing and demonstrating waste separations technologies are the principal objectives of the Underground Storage Tank -Integrated Demonstration (UST-ID) Program carried out by Pacific Northwest Laboratories (PNL) at the DOE Hanford site. One planned separation technique utilizes ion exchange for removal of cesium and strontium from high-level liquid supernates. A resorcinol-formaldehyde resin, which is a polycondensation-type cation exchange resin for cesium removal, has been developed at the Savannah River Technology Center (SRTC) and has demonstrated superlative performance in testing at SRS, Oak Ridge and PNL. Advantages of this resin relative to other media for cesium removal are its high capacity for cesium and its compatibility with the high pH and aluminum and sodium concentrations of both Hanford and SRS high-level liquid wastes.

Date: January 31, 1994

Creator: Crawford, C. L. & Bibler, N. E.

Object Type: Report

System: The UNT Digital Library

(open access)

Low severity upgrading of F-T waxes with solid superacids. Quarterly report, September 1, 1993--November 30, 1993

During the last quarter we characterized the acidity of platinum-promoted solid superacids by TPD (temperature-programmed desorption) and investigated the effect of sulfate concentration on the activity of Pt/ZrO{sub 2}/SO{sub 4} catalysts for isomerization and hydrocracking of n-hexadecane. The activities of Pt/ZrO{sub 2} promoted by different anions (SO{sub 4}{sup 2 {minus}}, MoO{sub 4}{sup 2{minus}} and WO{sub 4}{sup 2{minus}}), to give Pt/ZrO{sub 2}/SO{sub 4}, Pt/ZrO{sub 2}/MoO{sub 4} and Pt/ZrO{sub 2}/WO{sub 4}, were compared and the results related to their acidity and acid strength determined by TPD. TPD was an effective tool for the rapid evaluation of the acidity of metal-promoted solid superacids; this technique provided a good indication of the activity of the bifunctional solid superacids. The activity of the Pt/ZrO{sub 2}/SO{sub 4} catalyst at 160{degrees}C was compared with a Pt/{gamma}-Al{sub 2}O{sub 3} reforming catalyst at 160{degrees}C and also at 400{degrees}C (350 psig H{sub 2}), respectively. The Pt/{gamma}-Al{sub 2}O{sub 3} catalyst was not effective at 160{degrees}C but gave a 6.2 wt% conversion of the n-hexadecane to isomerized and cracked products at 400{degrees}C. The isomerization and hydrocracking of long-chain paraffins over metal-promoted solid superacids were carried out in the presence of selected aromatic compounds. It appears that the presence of aromatics changes the …

Date: January 31, 1994

Creator: Tierney, J. W. & Wender, I.

Object Type: Report

System: The UNT Digital Library

(open access)

Mixed Waste Management Facility: Monthly report summary, October--December 1993

As the initial monthly report, this document will overview activities through the first three months of FY94. Subsequent reports will be based on the previous month`s activities. During the first three months of FY94 the primary focus has been directed towards the Conceptual Design. The author completed a series of {open_quotes}Point Design{close_quotes} meetings leading to definition of process flow and functional flow diagrams. A formal 30% Conceptual Design Review was held in December with a panel of senior Laboratory and outside reviewers, including DOE. Although awaiting formal input from the Scientific Advisory Board, the input provided during the wrap-up session supported the Project effort in completing the CDR activities. A number of assurances milestones/markers were completed, including issuing of the Quality Assurance Plan, and initiating a contract with Roy W. Weston for the Preliminary Safety Analysis Report. In the Program Support area, a draft Project Management Plan was issued to DOE for review, and a number of key Project personnel (including Project Control Manager and Project Engineers) were selected.

Date: January 31, 1994

Creator: Streit, R.

Object Type: Report

System: The UNT Digital Library