27 Matching Results

Results open in a new window/tab.

Acid measurements via near-infrared spectroscopy (open access)

Acid measurements via near-infrared spectroscopy

We were able to predict acid concentration to {plus_minus}0.08M HNO{sub 3}. In the presence of Al{sup 3} interference, the prediction dropped to {plus_minus}0.29 mols/liter over the range 0 to 9M HNO{sub 3}. Temperature affects the prediction of acid adversely and would have to be modelled out or the sample cell thermostated prior to using this method. 10 refs, 12 figs.(DLC)
Date: February 13, 1991
Creator: Buchanan, B. R.
System: The UNT Digital Library
Acid measurements via near-infrared spectroscopy (open access)

Acid measurements via near-infrared spectroscopy

We were able to predict acid concentration to {plus minus}0.08M HNO{sub 3}. In the presence of Al{sup 3} interference, the prediction dropped to {plus minus}0.29 mols/liter over the range 0 to 9M HNO{sub 3}. Temperature affects the prediction of acid adversely and would have to be modelled out or the sample cell thermostated prior to using this method. 10 refs, 12 figs.(DLC)
Date: February 13, 1991
Creator: Buchanan, B. R.
System: The UNT Digital Library
Development of Rotating Shadowband Spectral Radiometers and GCM Radiation Code Test Data Sets in Support of ARM. Technical Progress Report, September 15, 1990--September 14, 1991 (open access)

Development of Rotating Shadowband Spectral Radiometers and GCM Radiation Code Test Data Sets in Support of ARM. Technical Progress Report, September 15, 1990--September 14, 1991

Three separate tasks are included in the first year of the project. Two involve assembling data sets useful for testing radiation models in global climate modeling (GCM) codes, and the third is concerned with the development of advance instrumentation for performing accurate spectral radiation measurements. Task 1: Three existing data sets have been merged for two locations, one in the wet northeastern US and a second in the dry western US. The data sets are meteorological data from the WBAN network, upper air data from the NCDC, and high quality solar radiation measurements from Albany, New York and Golden, Colorado. These represent test data sets for those modelers developing radiation codes for the GCM models. Task 2: Existing data are not quite adequate from a modeler`s perspective without downwelling infrared data and surface albedo, or reflectance, data. Before the deployment of the first CART site in ARM the authors are establishing this more complete set of radiation measurements at the Albany site to be operational only until CART is operational. The authors will have the site running by April 1991, which will provide about one year`s data from this location. They will coordinate their measurements with satellite overpasses, and, to …
Date: March 13, 1991
Creator: Harrison, L. & Michalsky, J.
System: The UNT Digital Library
Molecular biological enhancement of coal desulfurization. Eleventh quarterly technical progress report (open access)

Molecular biological enhancement of coal desulfurization. Eleventh quarterly technical progress report

The objective of this project is to produce one or more microorganisms capable of removing the organic and inorganic sulfur in coal. The original specific technical objectives of the project were to: clone and characterize the genes encoding the enzymes of the ``4S`` pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; return multiple copies of genes to the original host to enhance the biodesulfurization activity of the organism; transfer this pathway into a fast-growing chemolithotrophic bacterium; conduct a batch-mode optimization/analysis of scale-up variables.
Date: March 13, 1991
Creator: Litchfield, J. H.; Zupancic, T. J.; Kittle, J. D. Jr.; Baker, B.; Palmer, D. T.; Traunero, C. G. et al.
System: The UNT Digital Library
Molecular biological enhancement of coal desulfurization. [Thiobacillus cuprinus] (open access)

Molecular biological enhancement of coal desulfurization. [Thiobacillus cuprinus]

The objective of this project is to produce one or more microorganisms capable of removing the organic and inorganic sulfur in coal. The original specific technical objectives of the project were to: clone and characterize the genes encoding the enzymes of the 4S'' pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; return multiple copies of genes to the original host to enhance the biodesulfurization activity of the organism; transfer this pathway into a fast-growing chemolithotrophic bacterium; conduct a batch-mode optimization/analysis of scale-up variables.
Date: March 13, 1991
Creator: Litchfield, J. H.; Zupancic, T. J.; Kittle Jr., J. D.; Baker, B.; Palmer, D. T.; Traunero, C. G. et al.
System: The UNT Digital Library
Salton Sea Scientific Drilling Project Archival Reference, Final Draft (open access)

Salton Sea Scientific Drilling Project Archival Reference, Final Draft

This report provides an archival reference to the scientific information and other pertinent documents and materials associated with the Salton Sea Scientific Drilling Project (SSDP). This archiving process ensures that valuable technical data and information obtained during the life of the project can be retrieved, organized and maintained as a historical record for future reference. This paper describes the background of the project and the process used for archiving the materials. [DJE-2005]
Date: March 13, 1991
Creator: unknown
System: The UNT Digital Library
EC Hydraulic Drive Cylinder Load Test (open access)

EC Hydraulic Drive Cylinder Load Test

This engineering note documents the testing of the EC hydraulic drive cylinder. The test was done to insure that the cylinder could operate at the desired compression. The purpose of the test was to determine the deflection of the cylinder rod at a pressure of 7000 psi. This note includes an explanation of the procedure used and a summary of the result of the testing done on May 1, 1991 by Gary Trotter. The purpose for load testing the cylinder was to insure that it could operate at the pressures required. These pressures were calculated in EN 254, with the appropriate safety factors included. Another engineering note to refer to is note 3740.510-EN-298, which explains the testing of the cylinder relief valve, and the effect of the difference in cross-sectional areas on the forces involved. The general result of this load test was that the cylinder could operate safely at the design pressures. Since the rod was tested in compression, calculations were required in order to determine the buckling force of the rod. The maximum cylinder test pressure was based on the allowable force on the rod for elastic buckling. This force was calculated using two methods, a simple Euler …
Date: May 13, 1991
Creator: Wu, J.
System: The UNT Digital Library
Stanford Geothermal Program [quarterly technical report, January--March 1991] (open access)

Stanford Geothermal Program [quarterly technical report, January--March 1991]

Progress was reported on adsorption work in experimental, theoretical and field projects. The reinjection task is now nearing completion of the work on optimizing injection into the Palinpinon geothermal field in the Philippines. Well test analysis research has been expanded with the initiation of a new project on multiwell interference test interpretation.
Date: May 13, 1991
Creator: unknown
System: The UNT Digital Library
Stanford Geothermal Program (quarterly technical report, January--March 1991) (open access)

Stanford Geothermal Program (quarterly technical report, January--March 1991)

Progress was reported on adsorption work in experimental, theoretical and field projects. The reinjection task is now nearing completion of the work on optimizing injection into the Palinpinon geothermal field in the Philippines. Well test analysis research has been expanded with the initiation of a new project on multiwell interference test interpretation.
Date: May 13, 1991
Creator: unknown
System: The UNT Digital Library
[Wing 1 radiation survey and contamination report]. Final report (open access)

[Wing 1 radiation survey and contamination report]. Final report

We have completed the 5480.11 survey for Wing 1. All area(s)/item(s) requested by the 5480.11 committee have been thoroughly surveyed and documented. Decontamination/disposal of contaminated items has been accomplished. The wing 1 survey was started on 8/13/90 and completed 9/18/90. However, the follow-up surveys were not completed until 2/18/91. We received the final set of smear samples for wing 1 on 1/13/91. A total of 5,495 smears were taken from wing 1 and total of 465 smears were taken during the follow-up surveys. There were a total 122 items found to have fixed contamination and 4 items with smearable contamination in excess of the limits specified in DOE ORDER 5480.11 (AR 3-7). The following area(s)/item(s) were not included in the 5480.11 survey: Hallways, Access panels, Men`s and women`s change rooms, Janitor closets, Wall lockers and item(s) stored in wing 1 hallways and room 1116. If our contract is renewed, we will include those areas in our survey according to your request of April 15, 1991.
Date: May 13, 1991
Creator: Olsen, K.
System: The UNT Digital Library
Debuncher Cooling Limitations to Stacking (open access)

Debuncher Cooling Limitations to Stacking

During the January studies period we performed studies to determine the effect that debuncher cooling has on the stacking rate. Two different sets of measurements were made separated by about a week. Most measurements reported here are in PBAR log 16, page 243-247. These measurements were made by changing the accelerator timeline to give about 6 seconds between 29's, and then gating the cooling systems to simulate reduced cycle times. For the measurement of the momentum cooling effectiveness the gating switches could not be made to work, so the timeline was changed for each measurement. The cooling power of all three systems was about 800 watts for the tests reported here. We now regularly run at 1200 watts per system.
Date: August 13, 1991
Creator: Halling, Mike
System: The UNT Digital Library
Gaussian dispersion and dosimetric modeling sensitivity to area-specific 1982--86 meteorological data collected at the Savannah River Site (open access)

Gaussian dispersion and dosimetric modeling sensitivity to area-specific 1982--86 meteorological data collected at the Savannah River Site

Radiological dose to the offsite maximum individual or the 50-mile population is often estimated assuming that operational atmospheric releases originate from the geographical center of the Savannah River Site. Historically, meteorological data collected from instrumentation on the H-Area tower have been utilized to estimate atmospheric dispersion from centrally located releases.'' This paper examines the effect on dose predictions using meteorological data from seven onsite towers located at A, C, D, F, H, K, and P areas to describe meteorological conditions at the central release location. Maximum individual dose estimates using both annual and short-term average air concentrations are well within 20% of the mean prediction. Population dose estimates are also within 20% of the mean prediction. Population dose estimates are also within 20% of the mean except for two-hour doses using H-Area meteorological data, which is less than the average estimate by about 30%.
Date: September 13, 1991
Creator: Hamby, D. M. & Parker, M. J.
System: The UNT Digital Library
Gaussian dispersion and dosimetric modeling sensitivity to area-specific 1982--86 meteorological data collected at the Savannah River Site (open access)

Gaussian dispersion and dosimetric modeling sensitivity to area-specific 1982--86 meteorological data collected at the Savannah River Site

Radiological dose to the offsite maximum individual or the 50-mile population is often estimated assuming that operational atmospheric releases originate from the geographical center of the Savannah River Site. Historically, meteorological data collected from instrumentation on the H-Area tower have been utilized to estimate atmospheric dispersion from centrally located ``releases.`` This paper examines the effect on dose predictions using meteorological data from seven onsite towers located at A, C, D, F, H, K, and P areas to describe meteorological conditions at the central release location. Maximum individual dose estimates using both annual and short-term average air concentrations are well within 20% of the mean prediction. Population dose estimates are also within 20% of the mean prediction. Population dose estimates are also within 20% of the mean except for two-hour doses using H-Area meteorological data, which is less than the average estimate by about 30%.
Date: September 13, 1991
Creator: Hamby, D. M. & Parker, M. J.
System: The UNT Digital Library
Innovative clean coal technology (ICCT): 500 MW demonstration of advanced wall-fired combustion techniques for the reduction of nitrogen oxide (NO sub x ) emissions from coal-fired boilers (open access)

Innovative clean coal technology (ICCT): 500 MW demonstration of advanced wall-fired combustion techniques for the reduction of nitrogen oxide (NO sub x ) emissions from coal-fired boilers

The major objectives of the project are to: (1) demonstrate the performance of three combustion NO{sub x} control technologies; (2) determine the short-term NO{sub x} emission trends for each of the operating configurations; (3) determine the dynamic long-term NO{sub x} emission characteristics for each of the operating configurations using sophisticated statistical techniques; (4) evaluate progressive cost-effectiveness (i.e., dollars per ton of NO{sub x} removed) of the low NO{sub x} combustion technologies tested; and (5) determine the effects on other combustion parameters (e.g., CO production, carbon carry-over, particulate characteristics) of applying the low NO{sub x} combustion technologies. (VC)
Date: September 13, 1991
Creator: unknown
System: The UNT Digital Library
Molecular biological enhancement of coal biodesulfurization. Ninth quarterly technical progress report (open access)

Molecular biological enhancement of coal biodesulfurization. Ninth quarterly technical progress report

The objective of this project is to produce one or more microorganisms capable of removing the organic and inorganic sulfur in coal. The original specific technical objectives of the project were to: clone and characterize the genes encoding the enzymes of the ``4S`` pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; return multiple copies of genes to the original host to enhance the biodesulfurization activity of that organism; transfer this pathway into a fast-growing chemolithotropic bacterium; conduct a batch-mode optimization/analysis of scale-up variables.
Date: September 13, 1991
Creator: Litchfield, J. H.; Zupancic, T. J.; Baker, B.; Palmer, D. T.; Fry, I. J.; Tranuero, C. G. et al.
System: The UNT Digital Library
Molecular biological enhancement of coal biodesulfurization. [Thiobacillus cuprinus] (open access)

Molecular biological enhancement of coal biodesulfurization. [Thiobacillus cuprinus]

The objective of this project is to produce one or more microorganisms capable of removing the organic and inorganic sulfur in coal. The original specific technical objectives of the project were to: clone and characterize the genes encoding the enzymes of the 4S'' pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; return multiple copies of genes to the original host to enhance the biodesulfurization activity of that organism; transfer this pathway into a fast-growing chemolithotropic bacterium; conduct a batch-mode optimization/analysis of scale-up variables.
Date: September 13, 1991
Creator: Litchfield, J. H.; Zupancic, T. J.; Baker, B.; Palmer, D. T.; Fry, I. J.; Tranuero, C. G. et al.
System: The UNT Digital Library
The production of sulfate particles through the radiolytic oxidation of sulfur dioxide (open access)

The production of sulfate particles through the radiolytic oxidation of sulfur dioxide

The production of hydroxyl radicals by the radiolytic decomposition of water vapor following alpha decay of {sup 222}Rn can be used to produce an ultrafine sulfuric acid aerosol in the presence of SO{sub 2}. In the past, the production of this aerosol appeared to have a limiting threshold in as much as sufficient conversion of SO{sub 2} to SO{sub 4} must be attained to achieve the concentration required for nucleation. This appeared to occur when the bulk average acidity reached an adequately high value. The threshold curve for the onset of the sulfuric acid aerosol formation is a function of the H{sub 2}O, SO{sub 2} and Rn concentrations. The hydroxyl radical formation is dependent on the H{sub 2}O and Rn concentrations. The mass conversion rate of SO{sub 2} to H{sub 2}SO{sub 4} has been studied by measuring the airborne H{sub 2}SO{sub 4} concentration by ion chromatography after it has been collected on a filter and leached into solution. 39 refs., 9 figs.
Date: September 13, 1991
Creator: Karpen-Hayes, K.
System: The UNT Digital Library
Site development plan for Oak Ridge National Laboratory, Martin Marietta Energy Systems (open access)

Site development plan for Oak Ridge National Laboratory, Martin Marietta Energy Systems

The Oak Ridge National Laboratory (ORNL) is responsible for developing new and environmentally acceptable energy technologies that will offer the nation safe options for energy supply and efficient systems for energy use. Martin Marietta Energy Systems, Inc., (Energy Systems) operates ORNL under a management and operating contract. The purpose of the audit was to review and evaluate the effectiveness of site development planning activities at ORNL. A site development plan is a long-range master plan for the acquisition, development, utilization, and disposal of land and physical facilities at a specific US Department of Energy (DOE) facility. ORNL did not have a current site development plan and had not submitted updates to the old plan. This condition existed because the DOE Field Office, Oak Ridge (OR), and ORNL management had not implemented their responsibilities set forth in applicable DOE orders for site development planning. As a result, DOE had no assurance that ORNL real property holdings would be planned and developed economically and efficiently.
Date: September 13, 1991
Creator: unknown
System: The UNT Digital Library
Interim Action Proposed Plan Metallurgical Laboratory Hazardous Waste Management Facility Closure Savannah River Site Department of Energy, Aiken County, South Carolina (open access)

Interim Action Proposed Plan Metallurgical Laboratory Hazardous Waste Management Facility Closure Savannah River Site Department of Energy, Aiken County, South Carolina

This proposed plan describes the interim action selected to address potential contamination associated with the Metallurgical Laboratory Hazardous Waste Management Facility located at the Savannah River Site, Aiken, South Carolina.
Date: November 13, 1991
Creator: Palmer, E.
System: The UNT Digital Library
Molecular biological enhancement of coal biodesulfurization (open access)

Molecular biological enhancement of coal biodesulfurization

The objective of this project is to produce one or more microorganisms capable of removing the organic and inorganic sulfur in coal. The specific technical objectives of the project are to: clone and characterize the genes encoding the enzymes of the 4S'' pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; return multiple copies of genes to the original host to enhance the biodesulfurization activity of that organism; transfer this pathway into a fast-growing chemolithotrophic bacterium; and conduct a batch-mode optimization/analysis of scale-up variables.
Date: December 13, 1991
Creator: Litchfield, J. H.; Zupancic, T. J.; Kittle, J. D.; Baker, B.; Palmer, D. T.; Fry, I. J. et al.
System: The UNT Digital Library
Molecular biological enhancement of coal biodesulfurization. Tenth quarterly technical progress report, [September--December 1991] (open access)

Molecular biological enhancement of coal biodesulfurization. Tenth quarterly technical progress report, [September--December 1991]

The objective of this project is to produce one or more microorganisms capable of removing the organic and inorganic sulfur in coal. The specific technical objectives of the project are to: clone and characterize the genes encoding the enzymes of the ``4S`` pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; return multiple copies of genes to the original host to enhance the biodesulfurization activity of that organism; transfer this pathway into a fast-growing chemolithotrophic bacterium; and conduct a batch-mode optimization/analysis of scale-up variables.
Date: December 13, 1991
Creator: Litchfield, J. H.; Zupancic, T. J.; Kittle, J. D.; Baker, B.; Palmer, D. T.; Fry, I. J. et al.
System: The UNT Digital Library
Quantities of uranium-235 buried in disposal boxes, 1985--1991 (open access)

Quantities of uranium-235 buried in disposal boxes, 1985--1991

IWT was asked by J. R. Schornhorst of NPSR to determine the distribution of the quantity of enriched uranium per disposal box (B-25) of the years 1985--1991 to provide input to an uptake of the E Area Safety Analysis. This information was considered important since the issue of criticality is an important concern in safety analyses. Information found in the COBRA data base shows no disposal containers exceeded 100 grams of U-235. The COBRA data base was queried in a two-step process. First a short program in the NATURAL language was used to retrieve all records beginning with January 1983 having a Burial Code of less than 4, indicating low-level waste disposed in trenches. These records were then passed to a temporary storage file and read into a program written in Statistical Analysis System (SAS) language. SAS was used to eliminate waste from the Naval Fuel Facility, which will not operate in the future, and to sort the records in order of increasing amounts of U-235. The SAS procedure FREQ was then used to produce a cumulative frequency distribution of grams of U-235. A total of 53,198 packages were disposed of during this time period, 277 of which contained U-235. …
Date: December 13, 1991
Creator: Cook, J. R.
System: The UNT Digital Library