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Proof of concept testing of an integrated dry injection system for SO sub x /NO sub x control

Description: The objectives of the subscale test program were designed to provide sorbent and additive selection guidance, and, in so doing, supply answers to the questions posed in the preceding section. The objectives are: Identify the best commercial hydrate sorbent and the best enhanced hydrate sorbent from a list of nine types, based upon S0{sub 2} removal at Ca/S=2. Determine the relative effectiveness of sodium sesquicarbonate versus sodium bicarbonate for S0{sub 2} and NO{sub x} control over the tem… more
Date: January 1, 1989
Creator: Helfritch, D.J.; Bortz, S.J. (Research-Cottrell, Inc., Somerville, NJ (United States). Environmental Services and Technologies Div.) & Beittel, R. (Riley Stoker Corp., Worcester, MA (United States))
Partner: UNT Libraries Government Documents Department
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(The fate of nuclides in natural water systems)

Description: Our research at Yale on the fate of nuclides in natural water systems has three components to it: the study of the atmospheric precipitation of radionuclides and other chemical species; the study of the behavior of natural radionuclides in groundwater and hydrothermal systems; and understanding the controls on the distribution of radionuclides and stable nuclides in the marine realm. In this section a review of our progress in each of these areas is presented.
Date: January 1, 1989
Creator: Turekian, K.K. (Yale Univ., New Haven, CT (USA). Dept. of Geology and Geophysics)
Partner: UNT Libraries Government Documents Department
open access

Development of mild gasification process

Description: Under a previous contract with Morgantown Energy Technology Center (METC), Department of Energy (DOE) Contract No. AC21-84MC21108, UCC Research Corporation (UCCRC) built and tested a 1500 lb/day Mild Gasification Process Development Unit (MGU). The MGU, as tested under the previous contract, is shown in Figure 1. Testing completed under the previous contract showed that good quality hydrocarbon liquids and good quality char can be produced in the MGU. However, the MGU is not optimized. The prim… more
Date: January 1, 1989
Creator: Chu, C.I.C. & Williams, S.W.
Partner: UNT Libraries Government Documents Department
open access

Fire and explosion hazards of oil shale

Description: The US Bureau of Mines publication presents the results of investigations into the fire and explosion hazards of oil shale rocks and dust. Three areas have been examined: the explosibility and ignitability of oil shale dust clouds, the fire hazards of oil shale dust layers on hot surfaces, and the ignitability and extinguishment of oil shale rubble piles. 10 refs., 54 figs., 29 tabs.
Date: January 1, 1989
Partner: UNT Libraries Government Documents Department
open access

High accuracy electron-impact photoemission cross section measurements for the EUV radiometric standard

Description: This project was concerned with high-accuracy measurements of electron-impact photoemission cross sections for transitions of atoms and molecules in the EUV spectral region (30 nm to 200 nm). The spectrometer-detector system that was employed in the measurements was calibrated using well-parameterized synchrotron radiation. The 58.4 resonance line of He was chosen to establish the overall accuracy of the apparatus and data collection procedures. The measurement of this line can be compared to a… more
Date: January 1, 1989
Creator: Risley, J. S.
Partner: UNT Libraries Government Documents Department
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Development and process evaluation of improved Fischer-Tropsch slurry catalysts

Description: The objective of this contract is to develop a consistent technical data base on the use of iron-based catalysts in Fischer-Tropsch (FT) synthesis reactions. This data base will be developed to allow the unambiguous comparison of the performance of these catalysts with each other and with state-of-the-art iron catalyst compositions. Particular attention will be devoted to generating reproducible kinetic and selectivity data and to developing reproducible improved catalyst compositions.
Date: January 1, 1989
Creator: Withers, H.P. (Air Products and Chemicals, Inc., Allentown, PA (United States)); Bukur, D.B. & Rosynek, M.P. (Texas A and M Univ., College Station, TX (United States))
Partner: UNT Libraries Government Documents Department
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Aromatics oxidation and soot formation in flames

Description: Work during this contract period has been concerned with the mechanisms through which aromatics are formed and destroyed in flames, and the processes responsible for soot formation. Recent progress has been primarily in two areas: experiments and modeling of the soot nucleation process in low pressure benzene flames and preparation for experiments on the destruction mechanisms of benzene. In addition, we have incorporated weak collision'' formalisms into a fall-off computer code.
Date: January 1, 1989
Creator: Howard, J. B.
Partner: UNT Libraries Government Documents Department
open access

Modeling of Integrated Environmental Control Systems for Coal-Fired Power Plants: Conventional Froth Flotation for the IEC Coal Cleaning Plant Model

Description: This report describes the addition of a conventional froth flotation circuit into the FORTRAN coal cleaning module of the Integrated Environmental Control (IEC) model. The purpose of this modification is to include froth flotation as an option to clean the coal fines. The current model has three beneficiation: levels (2, 3, and 4) in which different streams are washed by specific gravity equipment. Level 2 washes only the coarse stream. Level 3 washes the coarse and medium streams. Level 4 wash… more
Date: January 1, 1989
Creator: Rubin, E. S.
Partner: UNT Libraries Government Documents Department
open access

Surface electrochemical control for the fine coal and pyrite separation

Description: Ongoing work includes the characterization of coal pyrites, the floatability evaluation of typical US coal samples, the flotation behavior of coal pyrites, the electrochemical measurement of the surface properties of coal pyrites, and the characterization of species produced at pyrite surfaces.
Date: January 1, 1989
Creator: Chen, Wanxiong; Hu, Weibai; Wann, Jyi-Perng; Zhu, Ximeng & Wadsworth, M. E.
Partner: UNT Libraries Government Documents Department
open access

Yttria-stabilized zirconia solid oxide electrolyte fuel cells, monolithic solid oxide fuel cells

Description: Small cell size, thin ceramic components, and high operating temperature are the key features of the MSOFC. The small size of individual cells in the monolithic structure increases the active surface area. For example, an MSOFC with channels about 1 mm in diameter has a ratio of active surface area to volume of about 9.4 sq cm/cu cm. This is about seven times the ratio for conventional fuel cells. On this basis alone, an MSOFC with a channel diameter of 1 mm should produce the same power as a c… more
Date: January 1, 1989
Partner: UNT Libraries Government Documents Department
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(In vivo mutagenicity and clastogenicity of ionizing radiation in nuclear medicine)

Description: The overall goals of our research remains to investigate the mutagenic and clastogenic effects of exposure to low levels of ionizing radiation in human lymphocytes. We are studying hospital patients referred to a nuclear medicine department for diagnostic cardiac imaging and nuclear medicine technologists who administer radionuclides.
Date: January 1, 1989
Partner: UNT Libraries Government Documents Department
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Analysis of general circulation model results and comparison with regional climatic data, Task 3

Description: On time scales of greater than one year the variability of weather and climate on a large path of the Earth is dominated by the Southern Oscillation. While current theories of this phenomenon have clarified the role of the interaction between the ocean and the atmosphere in maintaining this oscillation it has so far been unclear whether the Southern Oscillation originates in the ocean, in the atmosphere or during the interaction between the ocean and the atmosphere. In this study we compared si… more
Date: January 1, 1989
Creator: Cess, R.D. & Hameed, S.
Partner: UNT Libraries Government Documents Department
open access

(Radiopharmacokinetics: Utilization of nuclear medicine)

Description: The work performed in the 1986/1989 period can be characterized as one of testing and documenting that the Radiopharmacokinetic technique is both feasible and applicable to human studies, as well as developing spectroscopic methods for undertaking noninvasive human studies. Main accomplishments include studies which: show that drug targeting can be monitored noninvasively using radiolabeled drugs. The study that documented this finding involved an analysis of the comparative kinetics of biodist… more
Date: January 1, 1989
Creator: Wolf, W.
Partner: UNT Libraries Government Documents Department
open access

Development of a current collection loss management system for SDI homopolar power supplies

Description: High speed, high power density current collection systems have been identified as an enabling technology required to construct homopolar power supplies to meet SDI missions. This work is part of a three-year effort directed towards the analysis, experimental verification, and prototype construction of a current collection system designed to operate continuously at 2 kA/cm{sup 2}, at a rubbing speed of 200 m/s, and with acceptable losses in a space environment. To data, no system has achieved th… more
Date: January 1, 1989
Creator: Brown, D. W.
Partner: UNT Libraries Government Documents Department
open access

Comparison of pressure ransient response in intensely and sparsely fractured reservoirs

Description: A comprehensive analytical model is presented to study the pressure transient behavior of a naturally fractured reservoir with a continuous matrix block size distribution. Geologically realistic probability density functions of matrix block size are used to represent reservoirs of varying fracture intensity and uniformity. Transient interporosity flow is assumed and interporosity skin is incorporated. Drawdown and interference pressure transient tests are investigated. The results show distinct… more
Date: January 1, 1989
Creator: Johns, R. T.
Partner: UNT Libraries Government Documents Department
open access

Mathematical software for ODEs

Description: No Description Available.
Date: January 1, 1989
Creator: Shampine, L. F.
Partner: UNT Libraries Government Documents Department
open access

Non-local kinetic transport studies of a field-reversed configuration

Description: One of the positive results that came from the work in this period was the development of a series of codes for solving the 2-D equilibrium FRC problem under various basic physics assumptions. The derivation of the models used to determine an FRC equilibrium was presented in the previous annual report, which is to be submitted to Physics of Fluids. The derivation is not repeated in this section; rather, some examples of what has been learned using these codes are presented. To date, the codes h… more
Date: January 1, 1989
Creator: Choi, Chan K.
Partner: UNT Libraries Government Documents Department
open access

Predicting the performance of ceramic filters by the use of silt density index

Description: A series of experiments were conducted to study the rate of filter fouling of several simulants. These solutions contained hydroxides of iron, aluminum, silica, and zinc, using a range of concentration of each under various conditions. Total Solids (TS), Total Suspended Solids (TSS), Total Dissolved Solids (TDS), Silt Density Index (SDI), and conductivity were measured in the studies. The purpose of these experiments was to find out whether or not SDI could be used to accurately predict the per… more
Date: January 1, 1989
Creator: Cain, S.M.
Partner: UNT Libraries Government Documents Department
open access

Neutron scatter studies of chromatin structure related to functions

Description: Neutron scatter studies have been performed at LANSCE, LANL and at the Institute Laue Langevin, Grenoble, France. In the previous progress report (April 1, 1988--July 1, 1988) the following objectives were listed: shape of the histone octamer; location of the N-terminal domains of histone in the nucleosome core particle (specific aim 1 of original grant proposal); effect of acetylation on nucleosome structure (specific aim 2); location of the globular domain of histone H1 (specific aim 6); and … more
Date: January 1, 1989
Creator: Bradbury, E.M.
Partner: UNT Libraries Government Documents Department
open access

Carolina bays of the Savannah River Plant

Description: Much of the research to date on the Carolina bays of the Savannah River Plant and elsewhere has focused on certain species or on environmental features. Different levels of detail exist for different groups of organisms and reflect the diverse interests of previous investigators. This report summarizes aspects of research to date and presents data from numerous studies. 70 refs., 14 figs., 12 tabs.
Date: January 1, 1989
Creator: Schalles, J. F.; Sharitz, R. R.; Gibbons, J. W.; Leversee, G. J. & Knox, J. N.
Partner: UNT Libraries Government Documents Department
open access

Contracting practices for the underground construction of the Superconducting Super Collider

Description: This report was prepared by a specially appointed committee under the auspices of the National Academy of Sciences/National Research Council to address contracting and associated management issues essential to the successful execution of underground construction for the Superconducting Super Collider.
Date: January 1, 1989
Partner: UNT Libraries Government Documents Department
open access

Biological Production of Ethanol From Coal

Description: Two batch and one continuous reactor study involving Clostridium ljungdahlii were carried out. First, the effects of H{sub 2} partial pressure on growth, CO and H{sub 2} uptake and product formation by C. ljungdahlii were investigated in batch culture. Over the concentration range studied, it was observed that CO was preferentially utilized in favor of H{sub 2}. It was also seen that increasing H{sub 2} partial pressures increased the ratio of ethanol to acetate. Finally, a two-stage CSTR syste… more
Date: January 1, 1989
Partner: UNT Libraries Government Documents Department
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Ceriodaphnia survival/reproduction test

Description: This toxicity test was conducted to determine if the effluent causes death (acute toxicity) or reduction in the reproduction of the test organisms (chronic toxicity) during a seven day period. A series of dilutions of the effluent are set to determine how much the effluent must be diluted before toxic effects are not longer noted. Acute toxicity is checked by statistically analyzing whether significantly more organisms die in the effluent dilutions than in the control treatment. Chronic toxicit… more
Date: January 1, 1989
Partner: UNT Libraries Government Documents Department
open access

Arctic hydrology and meteorology

Description: To date, five years of hydrologic and meteorologic data have been collected at Imnavait Creek near Toolik Lake, Alaska. This is the most complete set of field data of this type collected in the Arctic of North America. These data have been used in process-oriented research to increase our understanding of atmosphere/hydrosphere/biosphere/lithosphere interactions. Basically, we are monitoring heat and mass transfer between various spheres to quantify rates. These could be rates of mass movement … more
Date: January 1, 1989
Creator: Kane, D.L.
Partner: UNT Libraries Government Documents Department
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