You limited your search to:

  Partner: UNT Libraries Government Documents Department
Quantifying magnitudes and distributions of CO sources

Quantifying magnitudes and distributions of CO sources

Date: March 1, 1998
Creator: Dignon, J.; Penner, J. E. & Walton, J. J.
Description: We use a simplified version of the GRANTOUR chemical tracer model to analyze emissions of CO from various sources. The GRANTOUR model has been simplified to include the eigenvalue chemistry solution method of Prather (1994). The analysis includes fossil fuel combustion, biomass burning, hydrocarbon oxidation, ocean, and terrestrial sources of CO. We also present a 1{degree} x 1{degree} emissions inventory of CO from fossil fuel combustion.
Contributing Partner: UNT Libraries Government Documents Department
Commercial-Scale Demonstration of the Liquid Phase Methanol (LOMEOH(TM)) Process

Commercial-Scale Demonstration of the Liquid Phase Methanol (LOMEOH(TM)) Process

Date: March 31, 1996
Creator: None
Description: The Liquid Phase Methanol (LPMEOEP") Demonstration Project at K.ingsport, Tennessee, is a $213.7 million cooperative agreement between the U.S. Department of Energy (DOE) and Air Products Liquid Phase Conversion Company, L, P. (the Partnership). The LPMEOHY Process Demonstration Unit is being built at a site located at the Eastman Chemical Company (Eastman) complex in Kingsport. On 4 October 1994, Air Products and Chemicals, Inc. (Air Products) and signed the agreements that would form the Partnership, secure the demonstration site, and provide the financial commitment and overall project management for the project. These partnership agreements became effective on 15 March 1995, when DOE authorized the commencement of Budget Period No. 2 (Mod. AO08 to the Cooperative Agreement). The Partnership has subcontracted with Air Products to provide the overall management of the project, and to act as the primary interface with DOE. As subcontractor to the Partnership, Air Products will also provide the engineering design, procurement, construction, and commissioning of the LPMEOHTM Process Demonstration Unit, and will provide the technical and engineering supervision needed to conduct the operational testing program required as part of the project. As subcontractor to Air Products, Eastman will be responsible for operation of the LPMEOHTM Process Demonstration ...
Contributing Partner: UNT Libraries Government Documents Department
Advancing manufacturing through computational chemistry

Advancing manufacturing through computational chemistry

Date: December 31, 1995
Creator: Noid, D.W.; Sumpter, B.G. & Tuzun, R.E.
Description: The capabilities of nanotechnology and computational chemistry are reaching a point of convergence. New computer hardware and novel computational methods have created opportunities to test proposed nanometer-scale devices, investigate molecular manufacturing and model and predict properties of new materials. Experimental methods are also beginning to provide new capabilities that make the possibility of manufacturing various devices with atomic precision tangible. In this paper, we will discuss some of the novel computational methods we have used in molecular dynamics simulations of polymer processes, neural network predictions of new materials, and simulations of proposed nano-bearings and fluid dynamics in nano- sized devices.
Contributing Partner: UNT Libraries Government Documents Department
Results from GROCSE I: A real-time search for gamma ray burst optical counterparts

Results from GROCSE I: A real-time search for gamma ray burst optical counterparts

Date: October 27, 1995
Creator: Lee, B.; Akerlof, C. & Ables, E.
Description: The GROCSE I experiment (Gamma-Ray Optical Counterpart Search Experiment) is a rapid slewing wide field of view optical telescope at Lawrence Livermore National Laboratory which responds to triggers from the BATSE GRB data telemetry stream that have been processed and distributed by the BACODINE network. GROCSE 1 has been in continuous automated operation since January 1994. As of October 1995, sky images for 22 GRB triggers have been recorded, in some cases while the burst was still emitting gamma rays. The preliminary analysis of eight of these events are presented here. No optical counterparts have yet been detected. Limits for optical emission are given.
Contributing Partner: UNT Libraries Government Documents Department
Desulfurization of coal with hydroperoxides of vegetable oils. Technical progress report, March 1--May 31, 1995

Desulfurization of coal with hydroperoxides of vegetable oils. Technical progress report, March 1--May 31, 1995

Date: December 31, 1995
Creator: Smith, G.V.; Gaston, R.D.; Song, R.; Cheng, J.; Shi, Feng & Gholson, K.L.
Description: This project proposes a new method for removing organic sulfur from Illinois coals using readily available farm products. It proposes to use air and vegetable oils to disrupt the coal matrix, oxidize sulfur forms, increase volatiles, and desulfurize coal. This will be accomplished by impregnating coals with polyunsaturated oils, converting the oils to their hydroperoxides, and heating. Since these oils are relatively inexpensive and easily applied, this project could lead to a cost effective method for removing organic sulfur from coals. Moreover, the oils are environmentally safe; they will produce no noxious products and will improve burning qualities of solid products. Preliminary experiments showed that IBC 104 coal catalyzes the formation of hydroperoxides in safflower oil and that more sulfur is extracted from the treated than untreated coal. During the first quarter the requirement of an added photosensitizer was eliminated, the catalytic effect of coal was confirmed, and the existence of a complex set of reactions was revealed. During the second quarter, working with IBC-108 coal (2.3% organic S, 0.4% pyrite S), the effects of different extraction solvents were examined. A new pretreatment which combines alkali with linseed oil was discovered. Best organic sulfur removal is approximately 26% using alkali ...
Contributing Partner: UNT Libraries Government Documents Department
The DOE Center of Excellence for the Synthesis and Processing of Advanced Materials: Research briefs

The DOE Center of Excellence for the Synthesis and Processing of Advanced Materials: Research briefs

Date: January 1, 1996
Creator: unknown
Description: This publication is designed to inform present and potential customers and partners of the DOE Center of Excellence for the Synthesis and Processing of Advanced Materials about significant advances resulting from Center-coordinated research. The format is an easy-to-read, not highly technical, concise presentation of the accomplishments. Selected accomplishments from each of the Center`s seven initial focused projects are presented. The seven projects are: (1) conventional and superplastic forming; (2) materials joining; (3) nanoscale materials for energy applications; (4) microstructural engineering with polymers; (5) tailored microstructures in hard magnets; (6) processing for surface hardness; and (7) mechanically reliable surface oxides for high-temperature corrosion resistance.
Contributing Partner: UNT Libraries Government Documents Department
Properties variation with composition of single-crystal Pb(Zr{sub x}Ti{sub 1-x})O{sub 3} thin films prepared by MOCVD

Properties variation with composition of single-crystal Pb(Zr{sub x}Ti{sub 1-x})O{sub 3} thin films prepared by MOCVD

Date: December 1, 1995
Creator: Foster, C.M.; Bai, G.R.; Li, Z.; Jammy, R.; Wills, L.A. & Hiskes, R.
Description: Single-crystal thin films covering the full range of PZT 0{le}x{le}1 have been deposited by metal-organic chemical vapor deposition (MOCVD). The films were grown on epitaxial, RF-sputter-deposited SrRuO{sub 3} thin film electrodes on (001) SrTiO{sub 3} substrates. X-ray diffraction, energy-dispersive electron spectroscopy and optical waveguiding were used to characterize the crystalline structure, composition, refractive index, and film thickness. We found that the PZT films were single-crystalline for all compositions exhibiting cube-on-cube epitaxy with the substrate with very high degrees of crystallinity and orientation. We report the systematic variations in the optical, dielectric, polarization, and transport properties as a function of composition and the epitaxy-induced modifications in the solid-solution phase diagram of this system. These films exhibited electronic properties which showed clear systematic variations with composition. High values of remnant polarization (30--55 {mu}C/cm{sup 2}) were observed at all ferroelectric compositions. Unlike previous studies, the dielectric constant exhibited a clear dependence on composition with values ranging from 225--650. Coercive fields decreased with increasing Zr concentration to a minimum of 20 kV/cm at the (70/30) composition. In addition, these films exhibited both high resistivity and dielectric-breakdown strength ({approximately}10{sup 13} {Omega}-cm at 100 kV/cm and >300 kV/cm, respectively) without any compensative doping.
Contributing Partner: UNT Libraries Government Documents Department
Feasibility of optimizing recovery and reserves from a mature and geological complex multiple turbidite offshore California reservoir through the drilling and completion of a trilateral horizontal well. Quarterly report, January 1--March 31, 1996

Feasibility of optimizing recovery and reserves from a mature and geological complex multiple turbidite offshore California reservoir through the drilling and completion of a trilateral horizontal well. Quarterly report, January 1--March 31, 1996

Date: May 20, 1996
Creator: Coombs, S.F.
Description: The main objective of this project is to devise an effective re-development strategy to combat producibility problems related to the Repetto turbidite sequences of the Carpinteria Field. The lack of adequate reservoir characterization, high-water cut production, and scaling problems have in the past contributed to the field`s low productivity. To improve productivity and enhance recoverable reserves, the following specific goals are proposed: develop an integrated database of all existing data from work done by the former ownership group; expand reservoir drainage and reduce sand problems through horizontal well drilling and completion; operate and validate reservoir`s conceptual model by incorporating new data from the proposed trilateral well; transfer methodologies employed in geologic modeling and drilling multilateral wells to other operators with similar reservoirs. This report is an overview of the work that has been completed since the prior reporting period and is broken out by task number.
Contributing Partner: UNT Libraries Government Documents Department
US statutes of general interest to safeguards and security officers. Revision 12/95

US statutes of general interest to safeguards and security officers. Revision 12/95

Date: December 1, 1995
Creator: Cadwell, J.J. & Ruger, C.J.
Description: This document is one of a three volume set. This document, BNL 52202, it titled, ``US Statutes of General Interest to Safeguards and Security Officers``, and is intended for use by officers.
Contributing Partner: UNT Libraries Government Documents Department
Power spectrum calculations using the fast Fourier transform

Power spectrum calculations using the fast Fourier transform

Date: December 5, 1995
Creator: McCallen, R.
Description: In the analysis of turbulent flow, the evaluation of simulations is difficult because the results are three-dimensional and transient. We have found that analysis of the power spectra from the nodal time histories provides not only insight into the behavior of the flow, but it is a useful tool in determining the solution`s spatial (grid) and temporal (time step) convergence. We have developed a method and computer code for calculating the power spectrum for any set of equal-interval data. The code is called PWRSPEC. This report documents the method used to calculate the power spectrum, provides guidance on how to use the PWRSPEC code, and includes an example problem that was used for code validation.
Contributing Partner: UNT Libraries Government Documents Department