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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: January 15, 1990
Creator: Bukur, D.B. & Patel, S.A.
Partner: UNT Libraries Government Documents Department
open access

Molecular biological enhancement of coal biodesulfurization. [Rhodococcus]

Description: The objective of this project is to produce one or more microorganisms capable of removing the organic and inorganic sulfur in coal. The original specific technical objectives of the project were to: Clone and characterize the genes encoding the enzymes of the 4S'' pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; Return multiple copies of genes to the original host to enhance the biodesulfurization activity of that organism; Transfer this pathway into a fas… more
Date: March 15, 1990
Creator: Litchfield, J. H.; Fry, I.; Wyza, R. E.; Palmer, D. T.; Zupancic, T. J. & Conkle, H. N.
Partner: UNT Libraries Government Documents Department
open access

ASHRAE Standard 62-1989: Energy, Cost, and Program Implications.

Description: ASHRAE Standard 62-1989 (Standard 62-89) Ventilation for Acceptable Indoor Air Quality'' is the new heating, ventilating, and air-conditioning (HVAC) industry consensus for ventilation air in commercial buildings. Bonneville Power Administration (Bonneville) references ASHRAE Standard 62-81 (the predecessor to Standard 62-89) in their current environmental documents for required ventilation rates. Through its use, it had become evident to Bonneville that Standard 62-81 needed interpretation. No… more
Date: October 15, 1990
Creator: Steele, Tim R. & Brown, Marilyn A.
Partner: UNT Libraries Government Documents Department
open access

Technical studies on a composite groundwater sample from F- and H-Area

Description: A composite sample of groundwater from F- and H-Areas was collected by Waste Management Tech and delivered to the Savannah River Laboratory to use in preliminary experiments that would test three remediation technologies under consideration. The three technologies are pH adjustment and filtration, decontamination with a strong acid ion exchange resin, and decontamination with a chelating ion exchange resin.
Date: August 15, 1990
Creator: Bibler, J. P.
Partner: UNT Libraries Government Documents Department
open access

Determination of the effect of various hydrogen bonding functionalities on the viscosity of coal liquids

Description: The objective of this program was to differentiate and quantitate the effects of various hydrogen bonding functionalities on the viscosity of coal liquids. Emphasis was on separating and measuring the individual effect of phenolic (acidic) and aromatic amino (basic) hydrogen bonding functionalities on the viscosity of coal liquids. The elimination of both acidic and basic hydrogen bondings was attempted by using trifluoroacetyl chloride and butyric acid in derivatization; and the elimination of… more
Date: November 15, 1990
Creator: Wei, Jing-Fong.
Partner: UNT Libraries Government Documents Department
open access

In-beam studies of high-spin states of actinide nuclei

Description: High-spin states in the actinides have been studied using Coulomb- excitation, inelastic excitation reactions, and one-neutron transfer reactions. Experimental data are presented for states in {sup 232}U, {sup 233}U, {sup 234}U, {sup 235}U, {sup 238}Pu and {sup 239}Pu from a variety of reactions. Energy levels, moments-of-inertia, aligned angular momentum, Routhians, gamma-ray intensities, and cross-sections are presented for most cases. Additional spectroscopic information (magnetic moments, M… more
Date: November 15, 1990
Creator: Stoyer, M.A. (Lawrence Berkeley Lab., CA (USA). Nuclear Science Div. California Univ., Berkeley, CA (USA). Dept. of Chemistry)
Partner: UNT Libraries Government Documents Department
open access

Cyclone performance and optimization

Description: The objectives of this project are: to characterize the gas flow pattern within cyclones, to revise the theory for cyclone performance on the basis of these findings, and to design and test cyclones whose dimensions have been optimized using revised performance theory. This work is important because its successful completion will aid in the technology for combustion of coal in pressurized, fluidized beds. This quarter, an empirical model for predicting pressure drop across a cyclone was develop… more
Date: September 15, 1990
Creator: Leith, D.
Partner: UNT Libraries Government Documents Department
open access

Deconvolution using a neural network

Description: Viewing one dimensional deconvolution as a matrix inversion problem, we compare a neural network backpropagation matrix inverse with LMS, and pseudo-inverse. This is a largely an exercise in understanding how our neural network code works. 1 ref.
Date: November 15, 1990
Creator: Lehman, S.K.
Partner: UNT Libraries Government Documents Department
open access

Summary report for 1990 inservice inspection (ISI) of SRS 100-K reactor tank

Description: The integrity of the SRS reactor tanks is a key factor affecting their suitability for continued service since, unlike the external piping system and components, the tanks are virtually irreplaceable. Cracking in various areas of the process water piping systems has occurred beginning in about 1960 as a result of several degradation mechanisms, chiefly intergranular stress corrosion cracking (IGSCC) and chloride-induced transgranular cracking. The purpose of this inspection was to determine if … more
Date: May 15, 1990
Creator: Morrison, J. M. & Loibl, M. W.
Partner: UNT Libraries Government Documents Department
open access

The study of hadronic matter at the highest density; the search for the deconfined quark-gluon phase using 2 TeV anti p -p collisions; and the exclusive study of nuclear fragmentation using the Lawrence Berkeley Laboratory EOS-TPC

Description: This report discusses the: Fermilab experiment 735, a search for the quark-gluon plasma; an exclusive study of nuclear fragmentation using the EOS-TPC; and a study of the central rapidity region at the relativistic heavy ion collider.
Date: August 15, 1990
Creator: Scharenberg, R.P. & Hirsch, A.S.
Partner: UNT Libraries Government Documents Department
open access

Coal Surface Control for Advanced Fine Coal Flotation

Description: The primary objective of this research project is to develop advanced flotation methods for coal cleaning in order to achieve near total pyritic-sulfur removal at 90% Btu recovery, using coal samples procured from six major US coal seams. Concomitantly, the ash content of these coals is to be reduced to 6% or less. Work this quarter concentrated on the following: washability studies, which included particle size distribution of the washability samples, and chemical analysis of washability test … more
Date: August 15, 1990
Creator: Fuerstenau, D. W.; Sastry, K. V. S.; Hanson, J. S.; Harris, G.; Sotillo, F.; Diao, J. et al.
Partner: UNT Libraries Government Documents Department
open access

Level-2 system: Programmers-users manual

Description: This manual describes the design and implementation of particular parts of the system for running high-level filter code in the Level-2 farm'' of MicroVAX computers. The various chapters detail the interfaces to this system both from the point of programming TOOLs for inclusion in the filter-code and from the point of writing VMS programs to perform control and/or monitoring of this system. A lot of detailed descriptions about how this system works are omitted. It is separated into several chap… more
Date: June 15, 1990
Creator: Hoftun, J.S.
Partner: UNT Libraries Government Documents Department
open access

Research in radiobiology

Description: This report discusses the technical progress made during the past year. Good progress has been made in the areas of bones cells at risk, bone cell morphometry, bone cell residence time, microdistribution of plutonium-239, and the calculation of cell-specific radiation dosimetry. 3 figs., 11 tabs. (KJD)
Date: July 15, 1990
Creator: Jee, W.S.S.
Partner: UNT Libraries Government Documents Department
open access

Augmented Fish Health Monitoring, 1990 Annual Report.

Description: Augmented Fish Health Monitoring Contract AI79-87BP35585 was implemented on July 20, 1987. This report briefly describes third-year work being done to meet contract requirements for fish disease surveillance at Service facilities in the Columbia River basin and for histopathological support services provided to participating state agencies. It also summarizes the health status of fish reared at participating Service hatcheries and provides a summary of case history data for calendar year 1989. … more
Date: August 15, 1990
Creator: Warren, James W.
Partner: UNT Libraries Government Documents Department
open access

Thermomechanical properties of Cr:Tm:Ho:Y sub 3 Al sub 5 O sub 12

Description: The thermomechanical properties of Cr:Ho:Tm:Y{sub 3}Al{sub 5}O{sub 12} have been measured and compared to similar measurements on Nd:Y{sub 3}Al{sub 5}O{sub 12}. We find that, in general, the properties are similar, with the single exception being thermal diffusivity. Nd:YAG has substantially higher thermal diffusivity than Cr:Tm:Ho:YAG. Consequently, the intrinsic thermal stress resistance figure of merit which governs a materials resistance to fracture in the presence of a steady thermal gradi… more
Date: May 15, 1990
Creator: Marion, J.E.
Partner: UNT Libraries Government Documents Department
open access

Anatomy of a disruption in MTX (Microwave Tokamak Experiment)

Description: Disruptions are observed in the Microwave Tokamak Experiment, MTX (nee Alcator C), over a wide range of plasma parameters. Indeed, disruptions often occur far from the boundaries of the operating space as defined by Hugill and l{sub i}-q plots. Despite this, the general behavior during the disruptive process is generally similar whatever the operating parameters. This report will describe one disruption in detail in order to provide a detailed anatomy of the event.
Date: October 15, 1990
Creator: Hooper, E. B.; Casper, T. A.; Lasnier, C. J.; Makowski, M. A.; Meyer, W. H.; Moller, J. M. et al.
Partner: UNT Libraries Government Documents Department
open access

(Assessment of the potential of Yunnan Province, China to grow and convert biomass to electricity)

Description: The purpose of the trip was to conduct a preliminary evaluation of biomass energy development in Yunnan Province, China. The evaluation included an assessment of the potential to grow and convert biomass to electricity, and an evaluation of the institutional relationships, which would be critical to the establishment of a collaborative biomass energy development project. This site visit was undertaken to evaluate the potential of an integrated biomass energy project, including the growing and h… more
Date: October 15, 1990
Creator: Perlack, R.D.
Partner: UNT Libraries Government Documents Department
open access

(International Thermonuclear Experimental Reactor support)

Description: This report summarizes the activities under LLNL Purchase Order B089367, the purpose of which is to support the University/Lawrence Livermore National Laboratory Magnetic Fusion Program by evaluating the status of research relative to other national and international programs and assist in long-range plans and development strategies for magnetic fusion in general and for ITER in particular.'' Two specific subtasks are included: to review the LLNL Magnet Technology Development Program in the con… more
Date: October 15, 1990
Creator: Dean, S. O.
Partner: UNT Libraries Government Documents Department
open access

Study of electron-positron interactions

Description: For the past seven years, this group has been interested in the study of tests of the Standard Model of Electroweak interactions. The program has centered about the AMY experiment which examines the nature of the final state products in electron-positron collisions in the center of mass energy range near 60 GeV. Results of these measurements have shown a remarkable consistency with the predictions of the minimal model of 3 quark and lepton generations and single charged and neutral intermediate… more
Date: September 15, 1990
Creator: Abashian, A.; Gotow, K. & Philonen, L.
Partner: UNT Libraries Government Documents Department
open access

(Air flow patterns within buildings)

Description: As Annex 20 enters the final year, deliverables in the form of reports, guidelines, and data formats are nearing completion. The Reporting Guidelines for the Measurement of Air Flows and Related Factors in Buildings will be published by the AIVC next month and was presented to the research community at the 11th AIVC Conference. Measurement guidelines and state-of-the-art equipment descriptions are part of a comprehensive manual, Measurement Techniques Related to Air Flow Patterns Within Buildin… more
Date: October 15, 1990
Creator: Harrje, D. T.
Partner: UNT Libraries Government Documents Department
open access

Circulation in gas-slurry column reactors

Description: Circulation in bubble columns, such as those used in fischer-tropsch synthesis, detracts from their performance in that gas is carried on average more rapidly through the column, and the residence time distribution of the gas in the column is widened. Both of these factors influence mass-transfer operations in bubble columns. Circulation prediction and measurement has been undertaken using probes, one-dimensional models, laser Doppler velocimetry, and numerical modeling. Local void fraction was… more
Date: August 15, 1990
Creator: Clark, N.; Kuhlman, J.; Celik, I.; Gross, R.; Nebiolo, E. & Wang, Yi-Zun.
Partner: UNT Libraries Government Documents Department
open access

Improving line detector by wedge filtering in the Fourier power spectrum domain

Description: This paper reports on the work being performed for the ship wake detection effort. We show that improvements in the detectability of line features in noisy images, using the correlation-spectral line detector, can be achieved through the judicious choice of a wedge filter in the Fourier power spectrum (FPS) domain. 3 refs., 7 figs.
Date: November 15, 1990
Creator: Lehman, S.K.
Partner: UNT Libraries Government Documents Department
open access

Superpressure Stratospheric Vehicle

Description: Our need for wide-band global communications, earth imaging and sensing, atmospheric measurements and military reconnaissance is extensive, but growing dependence on space-based systems raises concerns about vulnerability. Military commanders require space assets that are more accessible and under local control. As a result, a robust and low cost access to space-like capability has become a national priority. Free floating buoyant vehicles in the middle stratosphere can provide the kind of cost… more
Date: September 15, 1990
Creator: Chocol, C.; Robinson, W. & Epley, L.
Partner: UNT Libraries Government Documents Department
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