734 Matching Results

Search Results

Results: 1 - 24 next
open access

Interactions of tailings leachate with local liner materials found at Canonsburg, Pennsylvania.

Description: The mill tailings site at Canonsburg, Pennsylvania is the first mill site to receive remedial action under the Department of Energy's Uranium Mill Tailings Remedial Action Program. Part of this remedial action will require excavating the 53,500 m/sup 3/ (70,000 yd/sup 3/) of tailings on the site having a specific activity exceeding 100 pCi/g, and encapsulating these contaminated tailings in a clay-lined cell. As part of the remedial action effort, Pacific Northwest Laboratory has been studying … more
Date: April 1, 1984
Creator: Dodson, M.E.; Gee, G.W. & Serne, R.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanical transport in two-dimensional networks of fractures

Description: The objectives of this research are to evaluate directional mechanical transport parameters for anisotropic fracture systems, and to determine if fracture systems behave like equivalent porous media. The tracer experiments used to measure directional tortuosity, longitudinal geometric dispersivity, and hydraulic effective porosity are conducted with a uniform flow field and measurements are made from the fluid flowing within a test section where linear length of travel is constant. Since fluid … more
Date: April 1, 1984
Creator: Endo, H.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photodegradation of mutagens in solvent-refined coal liquids

Description: The purpose of this investigation was to evaluate any changes in the chemical composition and microbial mutagenicities of two representative solvent-refined coal (SRC) liquids as a function of exposure time to sunlight and air. This information was desired to assess potential health hazards arising from ground spills of these liquids during production, transport and use. Results of microbial mutagenicity assays using Salmonella typhimurium TA98, conducted after exposure, showed that the mutagen… more
Date: April 1, 1984
Creator: Kalkwarf, D. R.; Stewart, D. L.; Pelroy, R. A. & Weimer, W. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Facile reaction/extraction of coal with supercritical fluids. Quarterly technical progress report, January 1-March 31, 1984

Description: Arylmethyl phenyl ethers undergo competing reactions when treated with Lewis acids in benzene solvent. Apparently, benzene is insufficiently reactive to compete with intramolecular (intrapolymer) nucleophiles and, consequently, no increase in solubility accompanies the cleavages of ether links upon addition of benzene. When better nucleophiles, naphthalene and phenanthene, are provided, carbonium ions generated from ether cleavages are capped and the product is lower in molecular weight and mor… more
Date: April 20, 1984
Creator: Venier, C. G. & Squires, T. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of temperature on the absolute permeability of consolidated sandstone

Description: The effect of temperature on absolute permeability has been a point of disagreement in the petroleum literature for many years. Recent work at Stanford University has shown no dependence on temperature of the absolute permeability to water of unconsolidated sand cores. The objective of this report is to extend the investigation to consolidated sandstone by following similar experimental procedures and observing whether any temperature effects exist. Fontainebleau sandstone was chosen as the cor… more
Date: April 1, 1984
Creator: McKay, W.I. & Brigham, W.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Long-term protection of uranium mill tailings

Description: US Environmental Protection Agency standards for the cleanup and disposal of inactive tailings sites require that control measures for disposal of tailings be designed to be effective for up to 1000 years if reasonably achievable, and, in any case, for 200 years at least. To control the escape of contaminants over such long periods, containment systems must be capable of adjusting to changing environmental conditions. Elements of a containment system include surface covers, biotic barriers, rad… more
Date: April 1, 1984
Creator: Beedlow, P. A. & Hartley, J. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Survey and analysis of materials research and development at selected federal laboratories

Description: This document presents the results of an effort to transfer existing, but relatively unknown, materials R and D from selected federal laboratories to industry. More specifically, recent materials-related work at seven federal laboratories potentially applicable to improving process energy efficiency and overall productiviy in six energy-intensive manufacturing industries was evaluated, catalogued, and distributed to industry representatives to gauge their reaction. Laboratories surveyed include… more
Date: April 1, 1984
Creator: Reed, J.E. & Fink, C.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

First-year evaluation of a nondestructive assay system for the examination of ORNL TRU waste

Description: The Oak Ridge National Laboratory has been selected as the demonstration site for a new transuranic neutron assay system (NAS) developed at the Los Alamos National Laboratory. In addition, in order to meet specific ORNL program objectives, an upgraded segmented gamma-ray drum scanner has been integrated into the nondestructive assay (NDA) system to serve as a radioisotope identifier and as a quantitative assay backup to the NAS. A verification study, wherein selected waste drums will be emptied… more
Date: April 1, 1984
Creator: Schultz, F. J.; Haff, K. W.; Coffey, D. E.; Norris, L. B.; Caldwell, J. T.; Close, D. A. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of the fire performance of building insulation in full-scale and laboratory fire tests

Description: Twenty-two insulations are exposed to fire tests including the 25 ft Tunnel test, the Attic Floor Radiant Panel test and actual fire conditions of a simulated attic configuration. The insulations consisted of a number of cellulose fiber insulations, utilizing various chemical treatments, glass fiber and mineral fiber insulations. The fire performance characteristics of the insulations were measured in each of the three test scenarios and the report compares their results.
Date: April 1, 1984
Creator: Kleinfelder, W. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quarterly technical progress report, October 1-December 30, 1983

Description: Several new initiatives were begun in coal preparation, including a project to develop a liquid CO/sub 2/ coalescence process that will produce a superclean coal containing less than 1% ash. Another new project in this area is focusing on chemical coal cleaning for the removal of harmful trace elements, such as arsenic, lead, and zinc. Milestones were reached in both of our major electron beam flue gas cleanup projects. In the area of coal-water mixtures, our major industrial contracts are now … more
Date: April 1, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of H/sub 2/S on molten carbonate fuel cells

Description: This report summarizes the results of a literature survey conducted by the Institute of Gas Technology (IGT) under Phase I of a multi-phase program to investigate and identify the mechanism(s) responsible for molten carbonate fuel cell (MCFC) performance losses when operating on sulfur-containing gases. The objective of this literature survey was twofold: (1) to review the reported data on the interaction of H/sub 2/S with nickel-containing materials; and (2) to review reported investigations o… more
Date: April 1, 1984
Creator: Remick, R. J. & Anderson, G. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Smolt Passage Behavior and Flow-Net Relationships in the Forebay of John Day Dam, 1983 Annual Report of Research.

Description: During 1983, the research program had three separate but complementary phases - monitoring current patterns in the forebay, defining fish distribution with purse seine sampling, and describing the migration routes of salmonid smolts using radio tracking techniques. Preliminary results from the radio-tracking and purse seining operations in FY 1983 suggest that the discharge from the John Day River and the turbid plume it forms in the forebay may have a pronounced effect on the distribution of s… more
Date: April 1, 1984
Creator: Giorgi, Albert E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced coal liquefaction research. Quarterly technical progress report, July 1, 1983-September 30, 1983

Description: Work this quarter focused on staged liquefaction. The effect of residence time on conversion in single pass experiments was found to be quite different for the subbituminous Belle Ayr Mine and bituminous Illinois No. 6 coals studied. With bituminous coal, conversion to soluble material is quite high and the limit of conversion is approached in only a few minutes. With a subbituminous coal, however, conversion is much lower and the limit of conversion is approached much more slowly. Short contac… more
Date: April 1, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

INFIL1D: a quasi-analytical model for simulating one-dimensional, constant flux infiltration

Description: The program INFIL1D is designed to calculate approximate wetting-front advance into an unsaturated, uniformly moist, homogeneous soil profile, under constant surface-flux conditions. The code is based on a quasi-analytical method, which utilizes an assumed invariant functional relationship between reduced (normalized) flux and water content. The code uses general hydraulic property data in tabular form to simulate constant surface-flux infiltration. 10 references, 4 figures.
Date: April 1, 1984
Creator: Simmons, C.S. & McKeon, T.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mathematical and numerical modeling considerations for radionuclide ion migration in porous media

Description: The equations governing radionuclide transport in sorbing, porous media are presented using phenomenological coefficients. Both equilibrium controlled and simple rate controlled chemistry are summarized. Several simplified models are discussed. Finally, various numerical problems are considered. 25 references.
Date: April 1, 1984
Creator: Treadway, A.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dependence of liquefaction behavior on coal characteristics. Part V. Penetration of solvent vapor into coal particles. Final technical report, March 1981-February 1984

Description: The investigation of the sorption of solvent vapor into high volatile bituminous coal at temperatures up to 175/sup 0/C indicates that the solvent weight gain involves a complex coupling of several phenomena including adsorption, sorption into the coal matrix, capillary condensation and extraction into the condensed vapor phase. It appears that the sorption in untreated coal is dominated by capillary condensation induced by solvent extraction. As a result, an equilibrium state is not attainable… more
Date: April 1, 1984
Creator: Hsieh, S. T. & Duda, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

HOTSPUR progress report: neutron source spectrum characterization, and /sup 6/Li(n,x. cap alpha. ) and /sup 7/Li(n,x. cap alpha. ) cross section determination

Description: As a prerequisite to high accuracy measurements involving the bulk configuration of /sup 6/LiD we must have a good grasp of the details of the RTNS-I neutron source energy spectrum. Experiments to this end involving neutron yield vs deuteron energy, ratios of foil activation of selected elements, and pulse height distributions of a Si surface barrier detector are described. With this knowledge, the /sup 4/He-production cross sections for /sup 6/Li and /sup 7/Li are found experimentally to be 0.… more
Date: April 2, 1984
Creator: Goldberg, E. & Haight, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Two-point model for divertor transport

Description: Plasma transport along divertor field lines was investigated using a two-point model. This treatment requires considerably less effort to find solutions to the transport equations than previously used one-dimensional (1-D) models and is useful for studying general trends. It also can be a valuable tool for benchmarking more sophisticated models. The model was used to investigate the possibility of operating in the so-called high density, low temperature regime.
Date: April 1, 1984
Creator: Galambos, J. D. & Peng, Y. K. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Clinch River breeder reactor sodium fire protection system design and development

Description: To assure the protection of the public and plant equipment, improbable accidents were hypothesized to form the basis for the design of safety systems. One such accident is the postulated failure of the Intermediate Heat Transfer System (IHTS) piping within the Steam Generator Building (SGB), resulting in a large-scale sodium fire. This paper discusses the design and development of plant features to reduce the consequences of the accident to acceptable levels. Additional design solutions were ma… more
Date: April 13, 1984
Creator: Foster, K.W.; Boasso, C.J. & Kaushal, N.N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Stability of Tubes Conveying Fluid

Description: Tests and analysis are made for tubes conveying fluid for two types of support conditions. The objectives are to study the characteristics of different types of instability, the transition of one instability mechanism to another, and the control of instability.
Date: April 1984
Creator: Chen, Shoei-Sheng & Jendrzejczyk, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Automated Reasoning System ITP

Description: This report describes a system designed to provide a portable environment for the study of automated reasoning. The system is built on the LMA automated reasoning subroutine package. This program is not part of LMA itself but illustrates the level of inference-based system that can be constructed from the LMA package of tools. It is a clause-based reasoning system supporting a wide variety of techniques which have proven valuable over the years in a long-running automated deduction research pro… more
Date: April 1984
Creator: Lusk, Ewing L. & Overbeek, Ross A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Design Philosophy for Reliable Systems, Including Control

Description: This report develops a framework for a universe of discourse usable by such non-human experts. It is based on the idea that a design has many features of a contract and may be described as a contract between humans and a machine, defining what each must do to attain a goal. Several points are discussed: the use of techniques in analytical redundancy and their place as analogues in administrative control for conventional techniques in physical control; the use of redundant computer systems to pr… more
Date: April 1984
Creator: Gabriel, John R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DIF3D: A Code to Solve One-, Two-, and Three-Dimensional Finite-Difference Diffusion Theory Problems

Description: The mathematical development and numerical solution of the finite-difference equations are summarized. The report provides a guide for user application and details the programming structure of DIF3D. Guidelines are included for implementing the DIF3D export package on several large scale computers. Optimized iteration methods for the solution of large-scale fast-reactor finite-difference diffusion theory calculations are presented, along with their theoretical basis. The computational and data … more
Date: April 1984
Creator: Derstine, K. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Logic Machine Architecture Inference Mechanisms: Layer 2 User Reference Manual Release 2.0

Description: Logic Machine Architecture (LMA) is a package of software tools for the construction of inference-based systems. This document is the reference manual for layer 2 of LMA. It contains the information necessary to write LMA-based systems at the level of layer 3. Such systems include theorem provers, reasoning components for expert systems, and customized deduction components for a variety of application systems.
Date: April 1984
Creator: Lusk, Ewing L. & Overbeek, Ross A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen