Resource Type

Thermal Effects on Thin Laser-Peened Ferritic-Martensitic Samples (open access)

Thermal Effects on Thin Laser-Peened Ferritic-Martensitic Samples

None
Date: May 17, 2007
Creator: Caro, M.; Zalesky, T.; Hosemann, P.; El-dasher, B. S.; Halsey, W. G. & Stuart, B.
System: The UNT Digital Library
Refinery Integration of By-Products from Coal-Derived Jet Fuels Semi-Annual Progress Report: September 2005 - March 2006 (open access)

Refinery Integration of By-Products from Coal-Derived Jet Fuels Semi-Annual Progress Report: September 2005 - March 2006

This report summarizes the accomplishments toward project goals during the first six months of the third year of the project to assess the properties and performance of coal based products. These products are in the gasoline, diesel and fuel oil range and result from coal based jet fuel production from an Air Force funded program. Specific areas of progress include generation of coal based material that has been fractionated into the desired refinery cuts, acquisition and installation of a research gasoline engine, and modification of diesel engines for use in evaluating diesel produced in the project. Characterization of the gasoline fuel indicates a dominance of single ring alkylcycloalkanes that have a low octane rating; however, blends containing these compounds do not have a negative effect upon gasoline when blended in refinery gasoline streams. Characterization of the diesel fuel indicates a dominance of 3-ring aromatics that have a low cetane value; however, these compounds do not have a negative effect upon diesel when blended in refinery diesel streams. The desulfurization of sulfur containing components of coal and petroleum is being studied so that effective conversion of blended coal and petroleum streams can be efficiently converted to useful refinery products. Equipment is …
Date: May 17, 2006
Creator: Clifford, Caroline E. Burgess; Boehman, Andre; Song, Chunshan; Miller, Bruce & Mitchell, Gareth
System: The UNT Digital Library
Methods for Attribute Measurement and Alternatives to Multiplicity Counting (open access)

Methods for Attribute Measurement and Alternatives to Multiplicity Counting

The Attribute Measurement System with Information Barrier (AMS/IB) specification is being developed in support of the Defense Threat Redcution Agency's (DTRA's) Cooperative Threat Reduction (CTR) program for the Mayak Fissile Material Storage Facility. This document discusses the technologies available for attribute measurement, and advantages and disadvantages of alternatives.
Date: May 17, 2000
Creator: Kouzes, Richard T. & Geelhood, Bruce D.
System: The UNT Digital Library
Pi-decay muons from the SLC positron source (open access)

Pi-decay muons from the SLC positron source

This note extends the calculations presented in CN-295 (''additional muon calculations for the SLC positron source'') by taking into account the photoproduction of pions in the SLC positron target with subsequent decay into muons. By taking into account the probability of pion interaction in the target/wave guide/solenoid complex versus decay in drift reqions, we have concluded that this source of muons will not significanly contribute to the overall levels presented in the previous note.
Date: May 17, 1985
Creator: Nelson, W. R. & Shore, R. A.
System: The UNT Digital Library
Potassium terbium fluoride crystal growth development for faraday rotator discs fabrication, 6 July 1978--6 February 1979 (open access)

Potassium terbium fluoride crystal growth development for faraday rotator discs fabrication, 6 July 1978--6 February 1979

Crystal growth experiments were performed and growth of KTb/sub 3/F/sub 10/ crystals were accomplished. The crystal growth experiments consisted of hot zone modification and development of growth parameters. Several boules of KTb/sub 3/F/sub 10/ 30 to 40mm in diameter and one boule 50mm in diameter were grown at rates varying from .5mm/hr to 3.0mm/hr. The crystals evaluated display excellent optical quality. The optical path distortion was less than 0.5 fringe/cm at 633nm as viewed in Twyman--Green interferometry. Growth of large crystals has been limited by mechanical cleavage.
Date: May 17, 1979
Creator: unknown
System: The UNT Digital Library
Removal of cesium from uranium recovery process wastes (open access)

Removal of cesium from uranium recovery process wastes

The Uranium Recovery Process (TBP Process) at Hanford extracts and decontaminates uranium from the Metal Waste produced in the Bismuth Phosphate Process. Aqueous waste, approximately equal in volume to that of the Metal Waste itself, results from the process. Although of several years' age, these wastes are still sufficiently radioactive that they must be returned to underground tanks for storage. For several years aqueous wastes of low radioactive content have been discharged to ground at Hanford. Polyvalent cations are strongly absorbed by the soil. Monovalent cations are poorly absorbed if present in solutions of high salt content. Ground waters migrate toward the Columbia River very slowly. These observations point out the desirability of removing, from wastes to be cribbed, those long-lived radioactive constituents which are poorly absorbed by soil. Cesium (Cs-137) and strontium (Sr-90) are the principal constituents of Hanford wastes which possess these characteristics. Strontium, while more hazardous biologically, is of somewhat less concern than cesium because it is better absorbed from high-salt solutions by soils. This report describes research done to develop on inexpensive process for the removal of fission products, especially cesium, from Uranium Recovery Process Wastes. 4 refs., 13 tabs.
Date: May 17, 1954
Creator: Burns, R. E.; Brandt, R. L. & Clifford, W. E.
System: The UNT Digital Library
Loft Heater Pin Thermocouple Attachment Testing. Heater Rod Blowdown Tests (open access)

Loft Heater Pin Thermocouple Attachment Testing. Heater Rod Blowdown Tests

Blowdown/reflood testing of two heater rods containing laser welded thermocouple attachments is described. Two series of tests were conducted, one of three and another of nine blowdowns. Test parameters were controlled such that the blowdown/reflood cycles duplicated those predicted for the LOFT reactor. Thermocouple performance throughout the test series was very good in that the only failures observed were caused by bowing of the heater rod. Data from all tests are included as are photographs of laser welds taken at various times during the test series. Although heater rod bowing did cause failure of some of the welds, actual fuel pins are restrained and thus not expected to bow to this extent. When weld failure does occur it appears in the form of a separation at the bond between the Titanium fillet and Zircaloy. This does not impair either the performance or the integrity of the fuel cladding in any way.
Date: May 17, 1973
Creator: Meservey, R. H. & Jensen, M. F.
System: The UNT Digital Library
DT fusion neutron irradiation of LLL stainless steel tensile specimens, February 23, 1978 (open access)

DT fusion neutron irradiation of LLL stainless steel tensile specimens, February 23, 1978

The DT fusion neutron irradiation of nine LLL stainless steel tensile specimens is described. The sample position, beam-on time and dose record are given. The maximum neutron fluence on any sample was 2.20 x 10/sup 17/ neutrons/cm/sup 2/.
Date: May 17, 1978
Creator: MacLean, S.C.
System: The UNT Digital Library
Fiscal year 1977 DT fusion neutron irradiations and dosimetry at the LLL Rotating Target Neutron Source, October 26, 1977 (open access)

Fiscal year 1977 DT fusion neutron irradiations and dosimetry at the LLL Rotating Target Neutron Source, October 26, 1977

The DT fusion neutron irradiation of 352 samples during 16 irradiation periods (beam-on time of more than 1219 hours) is described. Experiments from 16 individuals representing eight institutions are summarized. Maximum flux in any of the room temperature runs was 9 x 10'' neutrons/cm/sup 2/-sec for an 80 hour irradiation. The number of the UCID dosimetry reports detailing each of the irradiations are given.
Date: May 17, 1978
Creator: MacLean, S.C.
System: The UNT Digital Library
DT fusion neutron irradiation of LLL niobium, March 29, 1978 (open access)

DT fusion neutron irradiation of LLL niobium, March 29, 1978

The DT fusion neutron irradiation of February 13 to 17, 1978 is briefly outlined by the neutron dose record and the neutron fluences on 19 dosimetry foils.
Date: May 17, 1978
Creator: MacLean, S.C.
System: The UNT Digital Library
[Computer simulated images of radiopharmaceutical distributions in anthropomorphic phantoms] (open access)

[Computer simulated images of radiopharmaceutical distributions in anthropomorphic phantoms]

We have constructed an anatomically correct human geometry, which can be used to store radioisotope concentrations in 51 various internal organs. Each organ is associated with an index number which references to its attenuating characteristics (composition and density). The initial development of Computer Simulated Images of Radiopharmaceuticals in Anthropomorphic Phantoms (CSIRDAP) over the first 3 years has been very successful. All components of the simulation have been coded, made operational and debugged.
Date: May 17, 1991
Creator: unknown
System: The UNT Digital Library
DT fusion neutron irradiation of LLL NbTi superconductor wires at 4. 2/sup 0/K and University of Oxford Cu/sub 3/Au TEM specimens at room temperature, April 7, 1978 (open access)

DT fusion neutron irradiation of LLL NbTi superconductor wires at 4. 2/sup 0/K and University of Oxford Cu/sub 3/Au TEM specimens at room temperature, April 7, 1978

The DT fusion neutron irradiation of two LLL NbTi superconductor wires at 4.2/sup 0/K and 14 University of Oxford Cu/sub 3/Au TEM specimens at room temperature is described. The sample position, beam-on time, and neutron dose record are given. The results from four profile dosimetry foils measuring the lateral variation in neutron flux are given.
Date: May 17, 1978
Creator: MacLean, S.C.
System: The UNT Digital Library
Summer investigations into the metabolic diversity of the microbial world (open access)

Summer investigations into the metabolic diversity of the microbial world

The philosophy of the course described here is to underscore the essence of microbiology which is diversity>: diversity of morphology and cellular development, behavior, and metabolic and physiological functions. Emphasis is on microbes other than those customarily covered in conventional microbiology courses and includes: the archaebacteria, extremophiles, and array of obligate anaerobes, various phototrophs, and those microbes exhibiting complex developmental cycles. Also included are microbes carrying out a variety of transformations of organic and inorganic compounds, as well as those which normally occur in symbiotic association with other microbes or with higher forms of life.
Date: May 17, 1993
Creator: Breznak, J. & Dworkin, M.
System: The UNT Digital Library
Integrated system for production of neutronics and photonics calculational constants. Volume 15, Part D, Rev. 1. The LLL Evaluated Nuclear Data Library (ENDL): descriptions of individual evaluations for Z = 0--98 (open access)

Integrated system for production of neutronics and photonics calculational constants. Volume 15, Part D, Rev. 1. The LLL Evaluated Nuclear Data Library (ENDL): descriptions of individual evaluations for Z = 0--98

Descriptions of evaluated nuclear data sets for 86 isotopes in the range Z = 0 to 98 are presented. The evaluation procedures that were used are discussed. At the beginning of the discussion for each individual isotope, a computer-generated listing is given which summarizes the main properties of the data sets that are contained in the evaluation.
Date: May 17, 1978
Creator: Howerton, R.J. & MacGregor, M.H.
System: The UNT Digital Library
Uranium blending (open access)

Uranium blending

None
Date: May 17, 1954
Creator: Smith, A. E.
System: The UNT Digital Library
[Computer simulated images of radiopharmaceutical distributions in anthropomorphic phantoms]. Performance report (open access)

[Computer simulated images of radiopharmaceutical distributions in anthropomorphic phantoms]. Performance report

We have constructed an anatomically correct human geometry, which can be used to store radioisotope concentrations in 51 various internal organs. Each organ is associated with an index number which references to its attenuating characteristics (composition and density). The initial development of Computer Simulated Images of Radiopharmaceuticals in Anthropomorphic Phantoms (CSIRDAP) over the first 3 years has been very successful. All components of the simulation have been coded, made operational and debugged.
Date: May 17, 1991
Creator: unknown
System: The UNT Digital Library
Summer investigations into the metabolic diversity of the microbial world. Progress report, May 5, 1992--April 30, 1993 (open access)

Summer investigations into the metabolic diversity of the microbial world. Progress report, May 5, 1992--April 30, 1993

The philosophy of the course described here is to underscore the essence of microbiology which is diversity>: diversity of morphology and cellular development, behavior, and metabolic and physiological functions. Emphasis is on microbes other than those customarily covered in conventional microbiology courses and includes: the archaebacteria, extremophiles, and array of obligate anaerobes, various phototrophs, and those microbes exhibiting complex developmental cycles. Also included are microbes carrying out a variety of transformations of organic and inorganic compounds, as well as those which normally occur in symbiotic association with other microbes or with higher forms of life.
Date: May 17, 1993
Creator: Breznak, J. & Dworkin, M.
System: The UNT Digital Library
Radiographic examination of production fuels (open access)

Radiographic examination of production fuels

None
Date: May 17, 1963
Creator: Blasewitz, A. G.
System: The UNT Digital Library
Turbidity coagulant for Columbia River water (open access)

Turbidity coagulant for Columbia River water

In this document, information about the need for a better compound to for filtering process water from the production reactors. It was found that the natural turbidity in the Columbia River was high enough to necessitate the use of a coagulant to minimize the passage of iron through filters. Tests indicated that Ferrisul was the better of the two compounds tested.
Date: May 17, 1945
Creator: Kidder, C. P.
System: The UNT Digital Library
Audit of Mound Plant`s reduction in force (open access)

Audit of Mound Plant`s reduction in force

Objective of this audit was to determine whether the Mound Plant`s Fiscal Year 1992 reduction in force (RIF) was effectively managed and implemented properly by DOE. DOE established policy to encourage contractors to reduce staffing by voluntary separations without unreasonable separation costs. EG&G Mound`s FY 1992 RIF was accomplished by voluntary separations; however, its implementation unreasonably increased costs because DOE did not have adequate criteria or guidelines for evaluating contractors` RIF proposals, and because EG&G Mound furnished inaccurate cost data to DOE evaluators. The unreasonable costs amounted to at least $21 million. Recommendations are made that DOE develop and implement guidelines to impose limitations on voluntary separation allowances, early retirement incentive payments, and inclusion of crucial employee classifications in voluntary RIFs.
Date: May 17, 1993
Creator: unknown
System: The UNT Digital Library
Engineering development of advanced coal-fired low-emission boiler systems. Technical progress report No. 6, January--March 1994 (open access)

Engineering development of advanced coal-fired low-emission boiler systems. Technical progress report No. 6, January--March 1994

Work continued as planned and scheduled. Total expenditures are below budget. Tasks 2 and 3 are complete. Task 5 was started early. Task 6 will start in April. The following major deliverables were issued: (1) Slides and narrative for PETC Audio/Visual combustion 2000 Exhibit; (2) Technical Paper for the 19th International Technical Conference on Coal Utilization & Fuel Systems; and (3) Draft of Technical Paper (for internal review) for the 1994 International Joint Power Generation Conference. Two advisors were added to the Team -- Richmond Power & Light and Peridot chemicals, Inc. RP&L is an excellent candidate for the POC host. Peridot has expertise in the production and marketing of sulfuric acid. A regular Quarterly Review Meeting was held with DOE-PETC.
Date: May 17, 1994
Creator: unknown
System: The UNT Digital Library
Fractional heat generation rates in Hanford reactors after shutdown (open access)

Fractional heat generation rates in Hanford reactors after shutdown

The knowledge of the fraction of decay-heat which is absorbed in fuel elements after a reactor is shutdown is important for many reasons. For example, allowable, reduced flow-rates after shutdown are very sensitive to the manner in which the decay-heat is distributed. Also, the temperature-rise in a discharged, uncooled fuel element is dependent on the total heat generated in the slug. Apart from any heat consideration, the escape of rays from a discharged fuel element is also of importance in certain applications. A significant refinement in the knowledge pertaining to decay-heat in irradiated uranium in recent years warrants a complete review of the fractional heat generation in the Hanford reactors. Earlier work was based on very qualitative aspects of fission product decay rates and energy spectra following reactor shutdown. The results of these early calculations on the original, solid, Hanford slug indicated that about 20 per cent of the energy generated in a fuel element from both fission product decay and delayed fission escaped from slug. The results reported here show a much smaller escape-fraction. Also, the time-dependence of the escape-fraction is considered for times greater than 100 seconds after reactor shutdown. Fractional heat-generation rates are calculated for various Hanford …
Date: May 17, 1961
Creator: Nilson, R. & Meichle, R. H.
System: The UNT Digital Library
Inspection of management of excess personal property at Rocky Flats (open access)

Inspection of management of excess personal property at Rocky Flats

Inspection revealed that immediate management attention is needed to properly control, store, and dispose of excess personal property at Rocky Flats. Current system of operation does not allow for efficient, timely, cost effective management; current storage and disposal practices are not consistent with contract requirements or DOE policies and procedures. Other deficiencies are pointed out. Results of inspection are divided into 4 sections: contract changeover issues, moratorium issues, additional excess property issues, and award fee observations. Recommendations are outlined.
Date: May 17, 1993
Creator: unknown
System: The UNT Digital Library
Parallel mathematical software. Annual report, September 15, 1991--August 31, 1993 (open access)

Parallel mathematical software. Annual report, September 15, 1991--August 31, 1993

This report discusses parallel software for nonlinear systems of equations.
Date: May 17, 1993
Creator: Watson, L. T. & Ribbens, C. J.
System: The UNT Digital Library