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Novel concept development of an internal recirculation catalyst for mild gasification
The objective of this program is to provide an overall evaluation of a novel process concept for mild gasification by completing work in three major tasks: (1) Laboratory-Scale Experiments, (2) Bench-Scale Tests, and (3) Proof-of-Concept Tests and Evaluation (optional). During this quarter, experimental work involving zinc chloride as a potential recirculating catalyst for coal, initiated in the previous quarter, was continued. The design of an all-quartz laboratory-scale isothermal free-fall reactor was completed, and construction was begun. One free-fall experiment was performed in an existing stainless-steel free-fall reactor with methanol-treated Illinois No. 6 high-volatile bituminous coal. 1 ref., 2 figs., 2 tabs.
Date:
September 1, 1988
Creator:
Knight, R. A. & Babu, S. P.
Object Type:
Report
System:
The UNT Digital Library
Precollege Newsletter, Number 10, September 1, 1988
Issue of the Precollege Newsletter from the Study of Mathematically Precocious Youths at Johns Hopkins University. It discusses girls in gifted programs, the University of Chicago, Rice University, Stanford University, how to pay for college tuition, and other subjects related to college programs for gifted children.
Date:
September 1, 1988
Creator:
Stanley, Julian C.; Brody, Linda; Lupkowski, Ann E.; Sandhofer, Lois; Wade, Mary Beth & Stanley, Barbara
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
[University Academy Contact List]
List of addresses for science and mathematics academies at various universities, including names and information for the presidents of the universities and the academy contacts.
Date:
September 1, 1988
Creator:
Texas Academy of Mathematics and Science
Object Type:
Text
System:
The UNT Digital Library
[Photograph 2012.201.B0156.0226]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Edward J. DeBartolo, president and chairman of the board of Remington Park, his family and entourage."
Date:
September 1, 1988
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
New approaches to linear and nonlinear programming
This report describes technical progress during the past twelve months on DOE Contract DE-FG-87ER25030 and requests support for the third year. The project involves study of the theoretical properties and computational performance of techniques that solve linear and nonlinear programs by means of nonlinear transformations. The group at the Systems Optimization Laboratory (SOL) were the first to recognize the connection between Karmarkar's projective method and the logarithmic barrier method. It is now generally recognized that essentially all interior-point methods for linear programming inspired by Karmarkar's method are closely related to application of Newton's method to a sequence of barrier functions. Each barrier function is defined from the objective function and a barrier term that is infinite along the boundary of the feasible region. As the weight on the barrier term is reduced to zero, the solution of the subproblem becomes closer to the solution of the original problem.
Date:
September 1, 1988
Creator:
Murray, W. & Saunders, M.A.
Object Type:
Report
System:
The UNT Digital Library
Variable temperature effects on release rates of readily soluble nuclides
In this paper we study the effect of temperature on the release rate of readily soluble nuclides, as affected by a time-temperature dependent diffusion coefficient. In this analysis ground water fills the voids in the waste package at t = 0 and one percent of the inventories of cesium and iodine are immediately dissolved into the void water. Mass transfer resistance of partly failed container and cladding is conservatively neglected. The nuclides move through the void space into the surrounding rock under a concentration gradient. We use an analytic solution to compute the nuclide concentration in the gap or void, and the mass flux rate into the porous rock. 8 refs., 4 figs.
Date:
September 1, 1988
Creator:
Kim, C. L.; Light, W. B.; Lee, W. W. L.; Chambre, P. L.; Pigford, T. H. (Korea Advanced Energy Research Inst., Daeduk (Republic of Korea) & Lawrence Berkeley Lab, C A (USA))
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0156.0233]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
September 1, 1988
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0261C.0494]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Barbara Shook, Ann Hoover and Pat Edwards, from left, have a balcony view."
Date:
September 1, 1988
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0113.0626]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Three murder defendants accused of beating then burning a Midwest City man are to appear in court today for the first time."
Date:
September 1, 1988
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
SUMMAR OF DISCUSSIONS OF USES OF THE ADVANCED LIGHT SOURCE (ALS)FOR EARTH SCIENCES RESEARCH: WORKSHOP REPORT OF THE ALS USERS'ASSOCIATION ANNUAL MEETING, LAWRENCE BERKELEY LABORATORY, BERKELEY,CA,JUNE 2-3, 1988
A workshop to discuss opportunities for research using the Advanced Light Source (ALS) was held as a part of the first annual ALS users meeting at the Berkeley Convention Center, Berkeley, California, June 2--3, 1988. The participants were from university and governmental laboratories, and some of those attending had had experience using synchrotron light sources. Because the Earth Science interests had not been voiced or considered in previous workshops or meetings of the ALS groups, it was the principal task of the group to explore the capabilities of the ALS appropriate to the Earth Sciences, to identify areas of research where the ALS would be of significant benefit, and to provide input regarding desired insertion devices. Discussions of synchrotron radiation phenomena and applications of synchrotron radiation in earth sciences have been highlighted in the literature and in a recent report of a workshop held at Argonne National Laboratory. A summary outline of some typical potential uses and the information to be gained from the use of synchrotron radiation is given. This is not an exhaustive list of earth sciences applications, but indicates the breadth of applications that can be addressed: (A) X-Ray Absorption Near Edge Structure (XANES) Spectroscopy (Oxidation state …
Date:
September 1, 1988
Creator:
Dillard, J.; Wallenberg, H. & Perry, D.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Morgan Family]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date:
September 1, 1988
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Baggage]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date:
September 1, 1988
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Fatal Folo]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date:
September 1, 1988
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: The Outdoorsman]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 5pm.
Date:
September 1, 1988
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
The Canadian Record (Canadian, Tex.), Vol. 98, No. 35, Ed. 1 Thursday, September 1, 1988
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
September 1, 1988
Creator:
Ezzell, Ben & Ezzell, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 80, No. 35, Ed. 1 Thursday, September 1, 1988
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
September 1, 1988
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
Limiting values of radionuclide intake and air concentration and dose conversion factors for inhalation, submersion, and ingestion: Federal guidance report No. 11
Radiation protection programs for workers are based, in the United States, on a hierarchy of limitations stemming from Federal guidance approved by the President. This guidance, which consists of principles, policies, and numerical primary guides, is used by Federal agencies as the basis for developing and implementing their own regulatory standards. The primary guides are usually expressed in terms of limiting doses to workers. The protection of workers against taking radioactive materials into the body, however, is accomplished largely through the use of regulations based on derived guides expressed in terms of quantities or concentrations of radionuclides. The values of these derived guides are chosen so as to assure that workers in work environments that conform to them are unlikely to receive radiation doses that exceed the primary guides. The purpose of the present report is to set forth derived guides that are consistent with current Federal radiation protection guidance. They are intended to serve as the basis for regulations setting upper bounds on the inhalation and ingestion of, and submersion in, radioactive materials in the workplace. The report also includes tables of exposure-to-dose conversion factors, for general use in assessing average individual committed doses in any population that is …
Date:
September 1, 1988
Creator:
Eckerman, K.F.; Wolbarst, A.B. & Richardson, A.C.B.
Object Type:
Report
System:
The UNT Digital Library
New topological invariants for non-abelian antisymmetric tensor fields from extended BRS algebra
Extended non-linear BRS and Gauge transformations containing Lie algebra cocycles, and acting on non-abelian antisymmetric tensor fields are constructed in the context of free differential algebras. New topological invariants are given in this framework. 6 refs.
Date:
September 1, 1988
Creator:
Boukraa, S.; Maillet, J.M. & Nijhoff, F.
Object Type:
Article
System:
The UNT Digital Library
Molecular thermodynamics of polymer melts at interfaces
A lattice model is developed for the prediction of structure and thermodynamic properties at free polymer melt surfaces and polymer melt/solid interfaces. Density variations in the interfacial region are taken into account by introducing voids in the lattice, in the spirit of the equation of state theory of Sanchez and Lacombe. Intramolecular energy (chain stiffness) effects are explicitly incorporated. The model is derived through a rigorous statistical mechanical and thermodynamic analysis, which is based on the concept of availability. Two cases are considered: ''full equilibrium,'' whereby the interfacial polymer is taken as free to exchange heat, work and mass with a bulk polymer phase at given temperature and pressure; and ''restricted equilibrium,'' whereby a thin polymer film is allowed to equilibrate locally in response to ambient temperature and pressure, but in which chains do not necessarily have the same chemical potential as in the unconstrained bulk. Techniques are developed for calculating surface tension, adhesion tension, density profiles, chain shape, bond orientation, as well as the distribution of segments of various orders in the interfacial region. 28 refs., 6 figs.
Date:
September 1, 1988
Creator:
Theodorou, D.N.
Object Type:
Report
System:
The UNT Digital Library
Partitioning of hydrogen in the vanadium-lithium-hydrogen system at elevated temperatures
Equilibrium concentrations of hydrogen in vanadium-base alloys exposed to flowing lithium at temperatures from 350 to 550/degree/C in a forced-circulation loop were measured by residual gas analysis and the vacuum fusion method. Residual gas analysis and removal of material from the surface allowed a determination of the spatial hydrogen distribution in the alloys. These experimental results were compared with calculated thermodynamic distribution coefficients for hydrogen in the vanadium/lithium system. Small amounts of other solutes in the molten lithium and in the alloys affected the solubility, diffusivity, and resultant distribution of hydrogen. Thermodynamic calculations demonstrated the importance of major alloying elements to the partitioning of hydrogen. 12 refs., 5 figs., 2 tabs.
Date:
September 1, 1988
Creator:
Hull, A. B.; Chopra, O. K.; Loomis, B. A. & Smith, D. L.
Object Type:
Article
System:
The UNT Digital Library
An experimental survey of the factors that affect leaching from low-level radioactive waste forms
This report represents the results of an experimental survey of the factors that affect leaching from several types of solidified low-level radioactive waste forms. The goal of these investigations was to determine those factors that accelerate leaching without changing its mechanism(s). Typically, although not in every case,the accelerating factors include: increased temperature, increased waste loading (i.e., increased waste to binder ratio), and decreased size (i.e., decreased waste form volume to surface area ratio). Additional factors that were studied were: increased leachant volume to waste form surface area ratio, pH, leachant composition (groundwaters, natural and synthetic chelating agents), leachant flow rate or replacement frequency and waste form porosity and surface condition. Other potential factors, including the radiation environment and pressure, were omitted based on a survey of the literature. 82 refs., 236 figs., 13 tabs.
Date:
September 1, 1988
Creator:
Dougherty, D.R.; Pietrzak, R.F.; Fuhrmann, M. & Colombo, P.
Object Type:
Report
System:
The UNT Digital Library
Medium energy nuclear physics research
The UMass group has concentrated on using electromagnetic probes, particularly the electron in high-energy scattering experiments at the Stanford Liner Accelerator Center (SLAC). Plans are also being made for high energy work at the Continuous Beam Accelerator Facility (CEBAF). The properties of this accelerator should permit a whole new class of coincidence experiments to be carried out. At SLAC UMass has made major contributions toward the plans for a cluster-jet gas target and detector system at the 16 GeV PEP storage ring. For the future CEBAF accelerator, tests were made of the feasibility of operating wire drift chambers in the vicinity of a continuous electron beam at the University Illinois microtron. At the same time a program of studies of the nuclear structure of more complex nuclei has been continued at the MIT-Bates Linear Accelerator Center and in Amsterdam at the NIKHEF-K laboratory. At the MIT-Bates Accelerator, because of an unforeseen change in beam scheduling as a result of problems with the T{sub 20} experiment, the UMass group was able to complete data acquisition on experiments involving 180{degrees} elastic magnetic scattering on {sup 117}Sn and {sup 41}Ca. A considerable effort has been given to preparations for a future experiment at …
Date:
September 1, 1988
Creator:
Peterson, G. A.; Dubach, J. F.; Hicks, R. S. & Miskimen, R. A.
Object Type:
Report
System:
The UNT Digital Library
Closure plan for Solid Waste Storage Area 6: Volume 1, Closure plan
This Closure Plan for Solid Waste Storage Area 6 (SWSA 6) a disposal area for low-level radioactive wastes and hazardous materials, of the US Department of Energy (DOE) Oak Ridge National Laboratory (ORNL) describes how portions of SWSA 6 will be closed under Resource Conservation and Recovery Act (RCRA) Interim Status per 40 CFR 265 Subpart G (TN Rule 1200-1-11-.05(7)). An overview is provided of activities necessary for final closure and corrective measures for all of SWSA 6. Results of surface waters and groundwater sampling are provided.
Date:
September 1, 1988
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The effect of precipitation on contaminant dissolution and transport: Analytic solutions
We analysed the effect of precipitation on the dissolution and transport rates of a nondecaying contaminant. Precipitation near the waste surface can have a profound effect on dissolution and transport rates. The mass-transfer rate at the waste surface is controlled by the solid-liquid reaction rate to an extent determined by the modified reaction-rate modulus, ..cap alpha... At later times extending to steady state, the mass-transfer rate depends on the location of the precipitation front r/sub p/ and on the solubility ratio C/sub o//C/sub p/. A precipitation front very near the waste surface can change the dissolution mechanism from solubility-diffusion-controlled to chemical-reaction-rate controlled. Precipitation limits the concentration of the contaminant at r > r/sub p/ to C/sub p/, steepening the concentration gradient for dissolution on the waste package side of the front and flattening the gradient for transport in the region outside the front. This increases the rate of contaminant transport from the waste to the front while decreasing the rate of transport away from the front, when compared to the situation without precipitation. The difference in the transport rates at the front is the rate of precipitation. For large changes in solubility, most of the contaminant is immobilized by precipitation, …
Date:
September 1, 1988
Creator:
Light, W. B.; Chambre, P. L.; Pigford, T. H. & Lee, W. W. L.
Object Type:
Report
System:
The UNT Digital Library