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Solar-thermal energy conversion and storage: cyclohexane dehydrogenation. Progress report, 30 September 1977-30 June 1978

Description: The objective of this project is to provide research support for the benzene/cyclohexane heat pipe development program at Sandia. The kinetics of the cyclohexane decomposition (energy collection) reaction over a commercially available naphtha reforming catalyst (RD-150, Englehard Industries) in the temperature range 400 to 800/sup 0/F and pressures of 1 to 40 atmospheres were measured. Significant amounts of side products such as toluene and butane were identified at temperatures above 550/sup … more
Date: July 1, 1978
Creator: Ritter, A.B.; DeLancey, G.B.; Schneider, J. & Silla, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermo-chemical energy conversion and storage. Final report

Description: Research support for the cyclohexane/benzene heat pipe development program at Sandia Laboratories is reported. The apparent kinetics of the gas-phase catalytic dehydrogenation of cyclohexane to benzene in an internally recirculated (gradientless) reactor over the temperature range from 500 to 800/sup 0/F at 1 atm at various space velocities was studied. A kinetic model was developed based on a reversible mass-action rate expression and a catalyst effectiveness factor which is able to correlate … more
Date: September 1, 1978
Creator: Ritter, A.B.; DeLancey, G.B.; Schneider, J. & Silla, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Kilowatt Isotope Power System: component report for the Ground Demonstration System Accumulator

Description: The Model Number ORC1A3A01 System Accumulator for the Kilowatt Isotope Power System was expulsion tested and demonstrated to be in compliance with the requirements of Sundstrand Explusion Test Procedure, TP 400. Test requirements of TP 400 were extracted from the Kilowatt Isotope Power System, Ground Demonstration System Test Plan.
Date: January 31, 1978
Creator: Brainard, E.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Diagnosing vegetation injury caused by air pollution

Description: The structure and function of plants in relation to air pollution injury is discussed. The sources, atmospheric chemistry, monitoring data, symptomatology, factors affecting plant response, injury threshold doses, air quality standards, relative sensitivity of plants, and leaf tissue analysis are discussed for major air pollutants. Among the pollutants discussed are: the photochemical oxidants (ozone, PAN, nitrogen oxides, sulfur dioxide, and fluorides). Minor pollutants discussed in the same f… more
Date: February 1, 1978
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Extraction and identification of organic materials present in soot from a natural gas flame

Description: Aliphatic and polynuclear aromatic hydrocarbons are readily extracted from soot formed from a natural gas flame using methylene chloride and ultrasonic agitation. Identification of 24 organic compounds via capillary column GC retention times and GC-MS data is reported along with details of experimental procedures.
Date: January 1, 1978
Creator: Vick, R.D. & Avery, M.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Excited state electron spin coherence (ESESC) studies of triplet states in molecular solids

Description: The field of coherent spectroscopy of two-level systems is applied to the lowest triplet state of organic molecules. By neglecting the triplet sublevel not coupled by the field, it is possible to describe the remaining two levels with Feynman-Vernon-Hellwarth geometrical representation of a general two-level system. The equations of motion of the pseudomagnetization are derived after transformation to the rotating frame, as are Bloch-type equations which include phenomenological relaxation time… more
Date: February 1, 1978
Creator: Tarrasch, M.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Excision repair in mammalian cells. [uv radiation, N-acetoxy-2-acetylaminofluorene]

Description: Excision repair after combined treatments of uv and N-acetoxy-2-acetylaminofluorene (AAAF) was studied by three different techniques in cells proficient in uv excision repair and in cells deficient in uv repair. Two patterns of repair were observed: in repair proficient cells total repair was additive, and in repair deficient cells total repair was much less than additive--usually less than observed for separate treatments--and AAAF inhibited dimer excision. We conclude that in the 1st class of… more
Date: January 1, 1978
Creator: Ahmed, F.E. & Setlow, R.B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Geothermal well completions: an overview of existing methods in four types of developments

Description: Existing practices and capabilities for completing producing and injection wells for geothermal application in each of four categories of geothermal environments are discussed. Included are steam wells in hard, fractured rocks (The Geysers, California), hot water wells in sedimentary formations (Imperial Valley, California), hot, dry impermeable rocks with circulating water systems (Valles Caldera, New Mexico), and geopressured, geothermal water wells with associated hydrocarbon production on t… more
Date: January 1, 1978
Creator: Snyder, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cell-mediated mutagenesis by chemical carcinogens

Description: The cell-mediated mutation system, with the proper choice of metabolizing cells, can be used to detect the mutagenic activities of different classes of chemical carcinogens. When fibroblastic cells were used as the metabolizing cells, a correlation between the in vivo carcinogenic activity and the in vitro mutagenic activity of 11 aromatic polycyclic hydrocarbons was observed. When primary liver cells were used as the metabolizing cells, three known liver carcinogens were demonstrated to be mut… more
Date: January 1, 1978
Creator: Huberman, E. & Langenbach, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Investigative study of engine limiting

Description: An experimental study was conducted to determine the effect of cylinder cut-out or ''engine limiting'' on fuel consumption and exhaust emissions for a current technology V-type 8-cylinder engine. Increases in energy conversion efficiency while operating with only 4 cylinders ranged from 10 to 40% compared to operation with 8 cylinders at the same power outputs. The speeds and loads chosen were representative of those required to operate a 4,500-lb vehicle at speeds up to 60 mph. Hydrocarbon emi… more
Date: February 1, 1978
Creator: Bechtold, R.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Liquid fuels production from biomass. Progress report No. 5, July 1-September 30, 1978

Description: The current program to convert biomass into liquid hydrocarbon fuels is an extension of the previous program to ferment marine algae to acetic acid. In that study, it was found that marine algae could be converted to higher aliphatic organic acids and that these acids could be readily removed from the fermentation both by membrane or liquid-liquid extraction. It was then proposed to convert these higher organic acids to aliphatic hydrocarbons via Kolbe Electrolysis, which may be used as a diese… more
Date: January 1, 1978
Creator: Sanderson, J.E. & Wise, D.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Biological conversion of biomass to methane. Quarterly progress report

Description: Progress in comparative studies of complete-mix and multi-stage reactors for use in the anaerobic fermentation of organic solids for methane production is reported. Results indicate that if a balanced population of organisms can be maintained in the initial stage, multi-stage fermentation is more efficient than a complete-mix system. However, if the system is stressed, failure of the multi-staged system is more rapid. When the first stage is not inhibited due to a short retention time, the wast… more
Date: January 1, 1978
Creator: Pfeffer, J T
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Quantitative mammalian cell genetic toxicology: study of the cytotoxicity and mutagenicity of 70 individual environmental agents related to energy technologies and 3 subfractions of a crude synthetic oil in the CHO/HGPRT system. [Hamsters]

Description: Conditions necessary for quantifying mutation-induction to 6-thioguanine resistance, which selects for >98% mutants deficient in the activity of hypoxanthine-guanine phosphoribosyl transferase (HGPRT) in a near-diploid Chinese hamster ovary (CHO) cell line, referred to as CHO/HGPRT system, have been defined. Employing this mutation assay, we have determined the mutagenicity of diversified agents including 11 direct-acting alkylating agents, 16 nitrosamines, 10 heterocyclic nitrogen mustards,… more
Date: January 1, 1978
Creator: Hsie, A. W.; Neill, J. P. & San Sebastian, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Direct uses of hot water (geothermal) in dairying

Description: Digital computer simulation was used to investigate the peak, steady energy utilization of a geothermal energy-supported dairy. A digital computer program was also written to assess the lifetime economics of the dairy operation. A dynamic simulation program was written to design water storage tanks under diurnal transient loading. The geothermal site specified is the artesian spring named Hobo Wells near Susanville, California. The dairy configuration studies are unique, but consist of conventi… more
Date: January 1, 1978
Creator: Barmettler, E.R. & Rose, W.R. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Organic Photochemical Storage of Solar Energy. Progress Report, July 1, 1977--Feburary 28, 1978

Description: The prospects for driving endoergic reactions of simple, relatively abundant organic chemicals by photochemical means have been examined. Strategies for utilization of light of varying wavelength involve sensitization mechanisms which depend on the redox properties of energy storing substrates and photosensitizers. Of principal interest is valence isomerization which can be induced by electron donor-acceptor interaction between substrate and sensitizer in an excited complex or exciplex. Photoph… more
Date: March 1, 1978
Creator: Jones, G., II
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Proceedings of the Workshop on Hydrocarbon Processing Mixing and Scale-Up Problems

Description: A workshop was convened by the Division of Fossil Fuel Utilization of the US Department of Energy in cooperation with the Particulate and Multiphase Process Program of the National Science Foundation to identify needs for fundamental engineering support for the design of chemical reactors for processing heavy hydrocarbon liquids. The problems associated with dispersing liquid hydrocarbons in a reacting gas and mixing within the gas phase are of primary concern. The transactions of the workshop … more
Date: December 1978
Creator: Gabor, J. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Liquid fuels production from biomass. Progress report No. 6, 1 October-31 December 1978

Description: The current program to convert biomass into liquid hydrocarbon fuels is an extension of the previous program to ferment marine algae to acetic acid. In that study, it was found that marine algae could be converted to higher aliphatic organic acids and that these acids could be readily removed from the fermentation both by membrane or liquid-liquid extraction. It was then proposed to convert these higher organic acids to aliphatic hydrocarbons via Kolbe Electrolysis, which may be used as a diese… more
Date: January 1, 1978
Creator: Sanderson, J.E. & Wise, D.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preliminary study of uranium favorability of the Wilcox and Claiborne Groups (Eocene) in Texas

Description: Rocks of the Wilcox and Claiborne Groups crop out in the Texas Gulf Coastal Plain and are represented by a series of sands and shales which reflect oscillation of the strandline. The Wilcox Group (lower Eocene), usually undifferentiated in Texas, consists of very fine sands and clays and abundant lignite. The Claiborne Group (middle Eocene) comprises, in ascending order, Carrizo Sand, Reklaw Formation (clay), Queen City Sand, Weches Formation (clay), Sparta Sand, Cook Mountain Formation (clay),… more
Date: January 1, 1978
Creator: Wilbert, W. P. & Templain, C. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Anaerobic fermentation of agricultural residue: potential for improvement and implementation. Final report

Description: The results of studies designed to evaluate the potential of rapidly improving the technology of anaerobic fermentation of agricultural residues and methods of implementing it in existing agricultural operations are reported. The main objectives of this study were to: identify simple and low cost anaerobic fermentor design criteria that would be appropriate in small agricultural operations, develop high rate fermentor concepts that would enable multiple product recovery from the reactor, expand… more
Date: February 1, 1978
Creator: Jewell, W. J.; Capener, H. R. & Dell'orto, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geopressured-geothermal test of the EDNA Delcambre No. 1 well, Tigre Lagoon Field, Vermilion Parish, Louisiana: geology of the Tigre Lagoon Field, Planulina Basin. Final report

Description: The geology and hydrology of the Tigre Lagoon Gas Field and the structural and depositional basin in which it occurs, as described, define a hydrodynamic system which has been in operation for millions of years. Fluid entrapment and geopressuring of the deposits has resulted in steepened geothermal gradients, accelerated maturation and thermal degradation (cracking) of fluid hydrocarbons, thermal diagenesis of certain clay minerals with release of much bound and intracrystalline water as free p… more
Date: October 1, 1978
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental impact of using fly ash in concrete

Description: An attempt was made to estimate the chemical composition of fly ash using the known chemical composition of coals from numerous regions of the country and the known behavior of elements in a limited number of coal and fly-ash samples. This technique assumes that each element in every piece of coal in the United States partitions itself into fly ash to the same extent and leaches from fly ash at the same rate. Using these limited data, enrichment factors were then calculated by dividing the comp… more
Date: September 1, 1978
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Synthesis, pathways, effects, and fate of chlorination by-products in freshwater, estuarine and marine environments. Annual report, September 10, 1976--September 30, 1977

Description: The study is composed of analytical chemistry and biological divisions with freshwater and marine biological subdivisions. The objective of the analytical phase is to identify those chemical compounds, other than the free and combined available halogen, which result from the addition of chlorine to fresh or saltwater. The objectives of the biological studies are to investigate the immediate and relatively long-term toxicity of several chlorination by-products to selected aquatic biota; to follo… more
Date: June 1, 1978
Creator: Anderson, D. R.; Bean, R. M.; Gibson, C. I. & Thatcher, T. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Availability of alternate petroleum fuels to offset natural gas curtailments for the 1978--1979 heating season (November 1--March 31)

Description: Data on the availability of propane, middle distillates, and residual fuel oils, covering the role of these petroleum products both as primary and alternate fuels, indicate that the national supply/demand situation is favorable for the 1978--79 winter. Propane inventories, 89.9 million barrels on November 1, plus production and imports should be adequate to satisfy demand even if the 1978--79 winter is as severe as the 1976--77 winter. The inventory level of middle distillate (heating oil) at t… more
Date: December 1, 1978
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of a practical photochemical energy storage system. Quarterly report

Description: A study of a series of copper(I) compounds which contain a strongly absorbing chromophore (e.g., CuBr(PPh/sub 3/)-(2,2'-bipyridine)) for use as sensitizers in photochemical energy storage systems is described. The generally low sensitization efficiencies of these compounds preclude their use as sensitizers in a practical photochemical energy storage system. Nevertheless, some interesting mechanistic information has emerged from this study, the full details of which are being written for publica… more
Date: September 15, 1978
Creator: Hautala, R.R. & Kutal, C.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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