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Fundamental studies of catalytic processing of synthetic liquids

Description: This project revolves around understanding the fundamental processes involved in the catalytic removal of harmful oxygenated organics present in coal liquids. We will model the complex type of sulfided Mo catalyst proposed for these reactions with a simple single crystal surfaces that display a controlled range and number of reaction sites and can be extensively characterized by surface science techniques.
Date: April 10, 1990
Creator: Watson, P. R.
Partner: UNT Libraries Government Documents Department
open access

Dynamics and pattern selection at the crystal-melt interface

Description: This paper discusses dendritic sidebranching; anisotropic surface tension; light scattering at the crystal-melt interface; and succinonitrite-dye mixtures.
Date: December 10, 1990
Creator: Cummins, H. Z.
Partner: UNT Libraries Government Documents Department
open access

Mechanistic studies on reactivities of organometallic macrocyclic complexes of chromium and cobalt

Description: Reaction pathways leading to the formation and cleavage of a transition metal-carbon bond at various oxidation states of the metal occupy a central position in understanding many enzymatic reactions and designing catalysts. The report is divided into six parts that (1) focus on the homolysis vs heterolysis of a C-Cr(III) bond, (2) describes a unique chain reaction and a S{sub E}2 reaction I{sub 2} and RCrL{sup 2+}, (3) concerns the oxidation of organochromium(III) complexes by dihalide and pseu… more
Date: December 10, 1990
Creator: Shi, Shu.
Partner: UNT Libraries Government Documents Department
open access

Radiation studies in the antiproton source

Description: Experiment E760 has a lead glass (Pb-G) calorimeter situated in the antiproton source tunnel in the accumulator ring at location A50. This location is exposed to radiation from several sources during antiproton stacking operations. A series of radiation studies has been performed over the last two years to determine the sources of this radiation and as a result, some shielding has been installed in the antiproton source in order to protect the lead glass from radiation damage.
Date: September 10, 1990
Creator: Church, M.
Partner: UNT Libraries Government Documents Department
open access

(Studies of non-linear dynamics of dissipative systems)

Description: In the period of this grant I worked on three main areas: (1) Symmetries in inviscid flow equations in one, two, and three dimensions and related nonlinear stability theorems for these flows; (2) applications of Hamiltonian mechanics to the problems of shallow water equations and internal wave dynamics in oceanic flows; and, (3) analysis of signals from chaotic systems with an eye toward learning how to build models of chaotic systems in nature.
Date: September 10, 1990
Creator: Abarbanel, D.I.
Partner: UNT Libraries Government Documents Department
open access

Secure resource management: Specifying and testing secure operating systems

Description: Much work has been devoted to methods for reasoning about the specifications of operating system specifications, the goal being to develop specifications for an operating system that are verified to be secure. Before the verification should be attempted, the specifications should be tested. This paper presents tools that can assist in the security testing of specifications. The first tool is based on the final Algebra Specification and Execution (FASE) system, and would be used to test specific… more
Date: April 10, 1990
Creator: Archer, M.; Frincke, D.A. & Levitt, K. (California Univ., Davis, CA (USA). Div. of Computer Science)
Partner: UNT Libraries Government Documents Department
open access

A novel process for manufacture of methanol

Description: To determine the effect of alternate catalysts on the synthesis. This will include copper chromite catalysts impregnated with alkali metals such as potassium, rubidium and cesium as well as their use as homogenous catalysts in the form of methoxides or similar salts. The use of various copper chromite catalysts with different compositions will be studied: e.g. substituting barium for manganses in copper chromite catalyst has a beneficial effect. To determine the nature of the active catalysts i… more
Date: January 10, 1990
Creator: Tierney, J.W. & Wender, I.
Partner: UNT Libraries Government Documents Department
open access

Indirect fluorometric detection techniques on thin layer chromatography and effect of ultrasound on gel electrophoresis

Description: Thin-layer chromatography (TLC) is a broadly applicable separation technique. It offers many advantages over high performance liquid chromatography (HPLC), such as easily adapted for two-dimensional separation, for whole-column'' detection and for handling multiple samples, etc. However, due to its draggy development of detection techniques comparing with HPLC, TLC has not received the attention it deserves. Therefore, exploring new detection techniques is very important to the development of T… more
Date: December 10, 1990
Creator: Yinfa, Ma.
Partner: UNT Libraries Government Documents Department
open access

DYNA3D example problem manual

Description: This manual describes in detail the solution of ten example problems using the explicit nonlinear finite element code DYNA3D. The sample problems include solid, shell, and beam element types, and a variety of linear and nonlinear material models. For each example, there is first an engineering description of the physical problem to be studied. Next, the analytical techniques incorporated in the model are discussed and key features of DYNA3D are highlighted. INGRID commands used to generate the … more
Date: October 10, 1990
Creator: Lovejoy, S.C. & Whirley, R.G.
Partner: UNT Libraries Government Documents Department
open access

The effects of tributyl phosphate on a polymeric ultrafilter

Description: The purpose of this project was to determine the effects that tributyl phosphate (TBP) would have on a polysulfone crossflow ultrafilter. Aqueous simulant solutions containing TBP (100 or 1000 mg/L) and Fe(III), Si(IV), Al(III), and NaNO{sub 3} were examined. Results obtained from simulant solutions containing 100 mg/L TBP were virtually identical to those obtained in the absence of TBP. However, a solution containing higher concentrations of TBP (1000 mg/L) very rapidly reduced the permeate fl… more
Date: August 10, 1990
Creator: Stewart, C.A.
Partner: UNT Libraries Government Documents Department
open access

Report of Foreign Travel of F. Plasil. August 1990

Description: The traveler spent eleven intense days at CERN, Switzerland. His time was divided between daytime, when he worked mainly on L* issues, and evenings/nights, when he performed shift work during the current run of the WA80 collaboration. It was decided to reduce the size and cost of the proposed L* experiment. Strategy for SSC subsystem proposals was discussed, and several relevant decisions were made.
Date: September 10, 1990
Creator: Plasil, F.
Partner: UNT Libraries Government Documents Department
open access

The CSMS (Configurable Seismic Monitoring System) Poorboy deployment: Seismic recording in Pinedale, Wyoming, of the Bullion NTS (Nevada Test Site) nuclear test under the verification provisions of the new TTBT protocol

Description: The Configurable Seismic Monitoring System (CSMS), developed at the Lawrence Livermore National Laboratory (LLNL) was deployed in a 13-m deep vault on the AFTAC facility at Pinedale, Wyoming to record the Bullion nuclear test. The purpose of the exercise was to meet all provisions of the new TTBT protocol on in-country seismic recording at a Designated Seismic Station (DSS). The CSMS successfully recorded the Bullion event consistent with and meeting all requirements in the new treaty protocol.… more
Date: July 10, 1990
Creator: Harben, P. E.; Rock, D. W. & Carlson, R. C.
Partner: UNT Libraries Government Documents Department
open access

Pacific Missile Test Center Information Resources Management Organization (code 0300): The ORACLE client-server and distributed processing architecture

Description: Computing architectures using distributed processing and distributed databases are increasingly becoming considered acceptable solutions for advanced data processing systems. This is occurring even though there is still considerable professional debate as to what truly'' distributed computing actually is and despite the relative lack of advanced relational database management software (RDBMS) capable of meeting database and system integrity requirements for developing reliable integra… more
Date: June 10, 1990
Creator: Beckwith, A. L. & Phillips, J. T.
Partner: UNT Libraries Government Documents Department
open access

Report of Foreign Travel of J. D. White, Program Manager, September 1990

Description: While on vacation, the traveler attended the European Nuclear Conference in Lyon, France. This trip was part of an outside activity approved by DOE. The traveler is a consultant to Loyola College, serving as chairman of a panel to assess the state of the art in the controls and instrumentation technology in the European nuclear community. This study is being conducted by Loyola College under subcontract to the National Science Foundation. The traveler was surprised by the level of automation cl… more
Date: October 10, 1990
Creator: White, J. D.
Partner: UNT Libraries Government Documents Department
open access

The effect of slightly faster strain rates and internal hydrogen on uranium-0. 8 weight percent titanium alloy mechanical properties

Description: Mechanical testing of uranium-0.8 wt % titanium (U-0.8 wt % Ti) alloys can affect the outcome of mechanical properties, primarily ductility, by varying the crosshead velocity, which changes the strain rate. However, most specifications that govern mechanical properties of this alloy reference ASTM E-8, which limits the speed to 0.5 in./in. of gage length per minute. Our current procedure for testing U-0.8 Ti is not at the maximum speed permitted in ASTM E-8, so an experiment was designed to eva… more
Date: October 10, 1990
Creator: Bird, E. L.
Partner: UNT Libraries Government Documents Department
open access

Electromagnetic interactions with nuclei and nucleons

Description: This report discusses the following topics: general LEGS work; photodisintegration of the deuteron; progress towards other experiments; LEGS instrumentation; major LEGS software projects; NaI detector system; nucleon detector system; waveshifting fibers; EGN prototype detector for CEBAF; photon beam facility at CEBAF; delta electroproduction in nuclei; quasielastic scattering and excitation of the Delta by {sup 4}He(e,e{prime}); and quasielastic scattering at high Q{sup 2}.
Date: November 10, 1990
Creator: Thornton, Stephen T. & Sealock, Richard M.
Partner: UNT Libraries Government Documents Department
open access

Study of Drift Tube Resolution Using Numerical Simulations

Description: The results off a simulation of straw tube detector response are presented. These gas ionization detectors and the electronics which must presumably go along with them are characterized in a simple but meaningful manner. The physical processes which comprise the response of the individual straw tubes are broken down and examined in detail. Different parameters of the simulation are varied and resulting predictions of drift tube spatial resolution are shown. In addition, small aspects of the pre… more
Date: October 10, 1990
Creator: Lundin, Mark C.
Partner: UNT Libraries Government Documents Department
open access

Roles of additives and surface control in slurry atomization

Description: Airblast atomization of micronized coal water slurry is carried out using twin-fluid jet atomizers of various distributor designs. Drop size and size distribution are measured using the laser diffraction technique. We found that the atomized drop sizes of micronized coal water slurries substantially decrease as the atomizing air pressure exceeds a threshold value. We also found that the atomized drop size, represented by the mass median diameter (MMD) can be described by the wave mechanism-base… more
Date: July 10, 1990
Creator: Tsai, S.C.
Partner: UNT Libraries Government Documents Department
open access

Milliwatt Generator Heat Source Progress Report, January--December 1989

Description: All hardware shipments to LANL were made on or ahead of schedule, thus satisfying all War Reserve and other hardware/yttrium requirements for the reporting period January--December 1989. A special investigation was conducted to determine the source of a surface staining'' problem observed on some T-111 components. Although the cause was not positively identified, the actions taken as a result of the investigation dramatically reduced both the frequency of occurrence and the magnitude of the pro… more
Date: September 10, 1990
Creator: Saylor, Ranny W.
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of catalytic processing of synthetic liquids. Quarterly progress report, January 1, 1990--March 31, 1990

Description: This project revolves around understanding the fundamental processes involved in the catalytic removal of harmful oxygenated organics present in coal liquids. We will model the complex type of sulfided Mo catalyst proposed for these reactions with a simple single crystal surfaces that display a controlled range and number of reaction sites and can be extensively characterized by surface science techniques.
Date: April 10, 1990
Creator: Watson, P. R.
Partner: UNT Libraries Government Documents Department
open access

D-Zero Central Calorimeter Inner Vessel Pumpdown Information

Description: The information presented in this engineering note can be of value to others who wish to predict pumping times and water content of vessels containing G-IO material. Four predictions of the water content of the G-IO in the D-Zero Central Calorimeter (CC) are given. Experience from pumping on the NW A cryostat was used to help predict the pumpdown time required for the CC. The actual pumpdown time and water removal from the CC agrees quite well with those predicted which gives confidence for fut… more
Date: December 10, 1990
Creator: Rucinski, R.
Partner: UNT Libraries Government Documents Department
open access

Linac BPM (Beam Position Monitor) modification program status

Description: In the fall of 1988 the Beam Position Monitor (BPM) Task Force recommended that linac BPM processors be pulled out of the linac, modified, adjusted for offsets, recalibrated, and reinstalled. As of the end of 1989 this process had been completed on all linac type BPM processors. This paper discusses these modifications and tests.
Date: February 10, 1990
Creator: Smith, S. & Williams, S.
Partner: UNT Libraries Government Documents Department
open access

Molten-caustic-leaching (Gravimelt) system integration project. Quarterly report, October--December 1989

Description: Operation of the Gravimelt Integrated Test Circuit for desulfurization and demineralization of coal was completed in a previous quarter when a 48-test process matrix was performed over 750 hours of operational time resulting in the production of 3,000 pounds of treated coal suitable for further test and evaluation. Analysis of the large quantity of data collected continued during the current quarter. Assessment of trace elements in the feed and product coal for two runs (one with Pittsburgh No.… more
Date: January 10, 1990
Partner: UNT Libraries Government Documents Department
open access

Chemical and nuclear properties of lawrencium (element 103) and hahnium (element 105)

Description: The chemical and nuclear properties of Lr and Ha have been studied, using 3-minute {sup 260}Lr and 35-second {sup 262}Ha. The crystal ionic radius of Lr{sup 3+} was determined by comparing its elution position from a cation-exchange resin column with those of lanthanide elements having known ionic radii. Comparisons are made to the ionic radii of the heavy actinides, Am{sup 3+} through Es{sup 3+}, obtained by x-ray diffraction methods, and to Md{sup 3+} and Fm{sup 3+} which were determined in t… more
Date: September 10, 1990
Creator: Henderson, Roger Alan
Partner: UNT Libraries Government Documents Department
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