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Development of improved iron Fischer-Tropsch catalysts

Description: The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date: April 30, 1990
Creator: Bukur, D.B.; Patel, S.A.; Dalai, A.K.; Jayanthi, G. & Ledakowicz, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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[Informational document: New Infromation on didanosine]

Description: A note to physicians from the Division of Acquired Immunodeficiency Syndrome (AIDS) at the National Institute of Health requesting for doctors and clinics to refer HIV positive patients to didanosine (ddI) trials as promptly as possible.
Date: July 30, 1990
Creator: National Institutes of Health (U.S.)
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
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[A living tribute in Lee Park

Description: A group of documents pertaining to the committees involved with the remodeling of the Robert E. Lee park purposely excluding the gay and lesbian community and prevented the addition of an AIDS memorial plaque to the park.
Date: June 30, 1990
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
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Global evaluation of mass transfer effects: In-duct injection flue gas desulfurization

Description: Sorbent injection is a low capital cost, low operating cost approach to SO{sub 2} control targeted primarily at older boilers for which conventional fuel gas desulfurization is not economically viable. Duct injection is one variation of this concept in which the sorbent, either a dry powder or a slurry, is injected into the cooler regions of the boiler, generally downstream of the air heaters. The attractiveness of duct injection is tied to the fact that it avoids much of the boiler heat transf… more
Date: September 30, 1990
Creator: Cole, J. A.; Newton, G. H.; Kramlich, J. C. & Payne, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

(Tribology conferences and forums)

Description: The principal meeting attended during this trip was the Japan International Tribology Conference Nagoya 1990. The conference encompassed a wide range of topics, including the tribology of ceramics, the tribology in high-performance automobiles, and many aspects of lubrication technology. Associated forums were also held on the tribology of advanced ceramics, on solid lubrication, and on automotive lubricants. Presentations made during the latter forum discussed anticipated trends in engine deve… more
Date: November 30, 1990
Creator: Yust, C.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Natural and anthropogenic climate change

Description: This report covers the project progress of grant DE-FG02-86ER60422 for the period March 1, 1990--October 1, 1990. The research program includes three tasks: General Circulation Models (GCM) intercomparison and improvement, climate data-model statistics, and China project science coordination. This work has been performed in collaboration with our subcontractor, Dr. Wei-Chyung Wang, SUNY/Albany. 8 refs.
Date: September 30, 1990
Creator: Gutowski, W.J.; Portman, D.A.; Iacono, M.J. (Atmospheric and Environmental Research, Inc., Cambridge, MA (USA)) & Wang, W.C. (State Univ. of New York, Albany, NY (USA). Atmospheric Sciences Research Center)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Stress-strain gage measurements on a Nevada Test Site (NTS) event using pairs of triple foil gages

Description: A triple-material stress-strain gage containing foils of ytterbium, manganin, and constantan was tested at LLNL. This gage yields three independent piezoresistance measurements from which an independent set of principal strains and principal stresses can be inferred. We have analyzed the signals from a gage at a specific location buried at a distance from the center of energy of an event at NTS. We inverted the resistivity signals to calculate the stress and strain histories as sensed by the fo… more
Date: November 30, 1990
Creator: Kansa, E. J. & Stout, R. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A guide to using material model No. 11 in NIKE2D: An internal variable, viscoplasticity model

Description: The need to accurately model the superplastic forming process which is highly rate and temperature dependent motivated the evaluation of Bammann's internal variable, viscoplasticity material model. The model is based upon the concepts of unified creep plasticity, but employs a yield surface for efficient implementation into large-scale numerical computer codes. It has proven elsewhere to be quite successful in describing large strain, thermal-mechanical behavior of crystalline materials. Featur… more
Date: October 30, 1990
Creator: Flower, E. C. & Nikkel, D. J. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Oral History Interview with W. J. Brooks, September 30, 1990

Description: Interview with W. J. Brooks, Civilian Conservation Corps employee during the Great Depression. He discusses his childhood in Kentucky; joining the CCC; assignment to Company 547 at Camp Robinson near Jackson, Kentucky and Company 2513 at Camp Panaca in Panaca, Nevada; and experiences while employed by the Civilian Conservation Corps.
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: September 30, 1990
Creator: Dreyer, Janice & Brooks, W. J.
Item Type: Refine your search to only Book
Partner: UNT Oral History Program
open access

A 5-cm dipole for the SSC-DE-1

Description: A 5cm SSC superconducting dipole that develops 6.6 tesla at 5790 A is proposed. The two layer magnet has 12% more transfer function than the present design as a result of using thin collars and close in'' iron. The thin collars provide precise positioning of the coils; they also provide minimum prestress (perhaps 2000 psi) as aid for magnet assembly. A welded skin around the iron provides the final prestress and shapes and the coil geometry. A prestressed aluminum bar placed between the vertica… more
Date: April 30, 1990
Creator: Caspi, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characterization of disruptions in the Microwave Tokamak Experiment, MTX

Description: The Microwave Tokamak Experiment (MTX) has a substantial number of fast diagnostics, especially for electrons, as part of its mission for pulsed, high-power electron cyclotron heating. As part of its contribution to ITER R D, these diagnostics are being used to characterize disruptions in MTX. This report is the first of two, with the second planned for submittal in September 1990, at the end of the ITER conceptual design activity. Here, we analyze the characteristics of disruptions during norm… more
Date: March 30, 1990
Creator: Hooper, E. B. & Makowski, M. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Action plan for the Tiger Team assessment report

Description: This document contains responses and planned actions that address the findings of the Tiger Team Assessment of Brookhaven National Laboratory, June 1990. In addition, the document contains descriptions of the management and organizational structure to be used in conducting planned actions, root causes for the problems identified in the findings, responses, planned actions, schedules and milestones for completing planned actions, and, where known, costs associated with planned actions.
Date: August 30, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Progress report for a research program in physics of the early universe

Description: Since June 1989 most of my research has been devoted to early Universe cosmology. The four focal points have been: Galaxy and large-scale structure formation with cosmic strings. Quantum field theoretical effects near cosmic strings and their observational signatures. Dynamics of inflationary Universe models. Quantum particle production and formation of topological defects during phase transitions.
Date: June 30, 1990
Creator: Brandenberger, R.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reactor tank UT acceptance criteria

Description: The SRS reactor tanks are constructed of type 304 stainless steel, with 0.5 inch thick walls. An ultrasonic (UT) in-service inspection program has been developed for examination of these tanks, in accordance with the ISI Plan for the Savannah River Production Reactors Process Water System (DPSTM-88-100-1). Prior to initiation of these inspections, criteria for the disposition of any indications that might be found are required. A working group has been formed to review available information on … more
Date: January 30, 1990
Creator: Daugherty, W.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A quantum theory of the mind-brain interface

Description: The Heisenberg quantum mechanical conception of nature is extended and applied to the brain. Strict adherence to the principle of parsimony, and to quantum thinking, produces naturally, on the basis of an overview of brain operation compatible with the information provided by the brain sciences, a unified description of the physical and mental aspects of nature that can account in principle for the full content of felt human experience. 33 refs.
Date: July 30, 1990
Creator: Stapp, Henry P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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3D simulations of axially confined heavy ion beams in round and square pipes

Description: We have been using the 3d PIC code WARP6 to model the behavior of beams in a heavy ion induction accelerator; such linacs are candidates for an ICF driver. Improvements have been added to the code to model an axially confined beam using comoving axial electric fields to simulate the confining ears'' applied to the accelerating pulses in a real system. We have also added a facility for modeling a beam in a round pipe, applying a capacity matrix to each axial Fourier mode in turn. These additions… more
Date: November 30, 1990
Creator: Grote, D. P.; Friedman, A. (Lawrence Livermore National Lab., CA (USA)) & Haber, I. (Naval Research Lab., Washington, DC (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Report of Foreign Travel of G. Malcolm Stocks, November1990

Description: The traveler presented invited lectures Parallelizing the Multiple Scattering KKR and KKR-CPA Codes'' at a workshop on Parallel Codes and Algorithms for Electronic Structure of Solids,'' held at the Science and Engineering Research Council (SERC) Daresbury Laboratory, and SCF-KKR-CPA Calculations'' at a meeting on KKR'' and related scattering theory, held at the University of Bristol. The Daresbury meeting reviewed the use of massively parallel computers in condensed matter physics, an area in … more
Date: November 30, 1990
Creator: Stocks, G. Malcolm
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hanford Site Waste Management and Environmental Restoration Integration Plan

Description: The Hanford Site Waste Management and Environmental Restoration Integration Plan'' describes major actions leading to waste disposal and site remediation. The primary purpose of this document is to provide a management tool for use by executives who need to quickly comprehend the waste management and environmental restoration programs. The Waste Management and Environmental Restoration Programs have been divided into missions. Waste Management consists of five missions: double-shell tank (DST) … more
Date: April 30, 1990
Creator: Merrick, D.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CO2 Measurements Along WOCE P-16 and 19 Sections in the South Pacific Ocean: A Joint LDGO/WHOI program

Description: This report covers the progress made since June 1, 1990, the beginning of this grant. The objective of the six-month period covered by this grant is to prepare for the field operations in the South Pacific Ocean. The coulometer and gas chromatograph systems, which will be used for the measurements of the total CO{sub 2} concentration and pCO{sub 2} aboard research ships, are being calibrated presently. Various spare parts needed for the expedition are being ordered, and the Pure-Air generators … more
Date: July 30, 1990
Creator: Takahashi, Taro
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

3D Particle Simulation of Beams Using the Warp Code: Transport Around Bends

Description: WARP is a discrete-particle simulation program which was developed for studies of space charge dominated ion beams. It combines features of an accelerator code and a particle-in-cell plasma simulation. The code architecture, and techniques employed to enhance efficiency, are briefly described. Current applications are reviewed. In this paper we emphasize the physics of transport of three-dimensional beams around bends. We present a simple bent-beam PIC algorithm. Using this model, we have follo… more
Date: November 30, 1990
Creator: Friedman, A.; Grote, D. P.; Callahan, D. A.; Langdon, A. B. & Haber, I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Heavy-element nucleosynthesis

Description: New measurements and theoretical studies of nuclear properties, together with new astronomical data on the growth of heavy-element abundances during the early history of the Galaxy, now provide a clearer picture of where in nature the elements heavier than iron are produced by rapid (r-process) and show (s-process) neutron capture reactions. The nuclear data suggest that the r-process involves a high-neutron-density beta-flow equilibrium environment and that the s-process may have occurred at a… more
Date: October 30, 1990
Creator: Mathews, G. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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