Resource Type
Collection
Serial/Series Title
United States Geological Survey Reports
365
Trace elements investigations report
143
United States Department of Energy Grand Junction Office Reports
79
Atomic Energy Commission Reports
73
GJBX
73
Trace elements memorandum report
66
United States Bureau of Mines Reports
64
Water Resources Investigations Reports
55
U.S. Geological Survey bulletin
32
Geological Survey bulletin
23
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Design, Construction, and Testing of a Residential Solar Heating and Cooling System. Progress Report, 1 September 1973--31 January 1974
None
Date:
March 1, 1974
Creator:
Lof, G.O.G. & Ward, D.S.
System:
The UNT Digital Library
Palladium Catalyzed Coupling Reactions: Mechanism of Reductive Elimination. Progress Report, October 1, 1979-September 30, 1980. [Ethane Elimination]
The 1,1-reductive elimination of ethane from three cis-bis(phosphine)-dimethylpalladium complexes, L/sub 2/Pd(CH/sub 3/)/sub 2/ (L = PPh/sub 3/, PPh/sub 2/,CH/sub 3/ and L/sub 2/ = Ph/sub 2/PCH/sub 2/CH/sub 2/PPh/sub 2/), and three trans analogs (L = PPh/sub 3/, PPh/sub 2/CH/sub 3/ and L/sub 2/ = 2,11-bis(diphenylphosphinomethyl)benzo(c)phenanthrene (TRANSPHOS)) was carried out. The three cis complexes underwent reductive elimination in the presence of coordinating solvents (DMSO, DMF, and THF). The trans complexes which could isomerize to cis (L = PPh/sub 3/, PPh/sub 2/CH/sub 3/) did so in polar solvents and then underwent reductive elimination. TRANSPHOS dimethylpalladium would not undergo reductive elimination of ethane. The eliminations from the cis isomers were intramolecular and displayed first order kinetics. Although TRANSPHOS dimethylpalladium(II) would not undergo a 1,1-reductive elimination of ethane, the addition of CD/sub 3/I to a DMSO solution of this complex at 25/sup 0/C rapidly produced CD/sub 3/-CH/sub 3/, implicating a transient palladium(IV) intermediate. E- and Z-bromostyrylbis(diphenylmethylphosphine)palladium(0) react with methyl lithium in THF at ambient temperature to give the E- and Z- propenylbenzenes, respectively. At -78/sup 0/C, the intermediate E- and Z-styrylmethylbis(diphenylmethylphosphine)palladium(II) complexes (9a,b) can be isolated. On raising the temperature of solutions of 9a,b in THF, E- and Z-propenylbenzenes are produced. The reductive elimination …
Date:
September 1, 1980
Creator:
Stille, J. K.
System:
The UNT Digital Library
Planetary-Wave Behavior and Arctic Air Pollution
An attempt was made to relate episodes of air pollution at Barrow, Alaska, containing vanadium, to the behavior of planetary waves in middle and high latitudes. A stationarity index for planetary waves is defined as the ratio between amplitudes computed from monthly mean maps and the mean amplitudes computed on a daily basis and averaged over the same month, irrespective of phase angle. Longitude-time sections of 500-mb height anomalies at various latitudes are related to vanadium pollution episodes at Barrow.
Date:
January 1, 1979
Creator:
Reiter, Elmar R.
System:
The UNT Digital Library
Geology and Hydrology of the Project Rulison Exploratory Hole, Garfield County, Colorado.
None
Date:
April 4, 1969
Creator:
unknown
System:
The UNT Digital Library
Rio Blanco Massive Hydraulic Fracture: Project Definition
The Piceance Basin in Colorado contains an estimated 600 trillion cu ft of natural gas in place. Both the Rulison and Rio Blanco events have been detonated to determine the feasibility of nuclear fracturing to stimulate natural gas production in this basin. A demonstration program to test the relative effectiveness of massive hydraulic fracturing (MHF) to achieve natural gas production stimulation from the same gas reservoir is presented. Details are included on MHF design parameters, including surface and subsurface equipment, pumping requirements, evaluation of fracturing results, and all associated test programs; site characteristics and preparation; proposal for gas utilization program; environmental surveillance and comparative analysis of environmental aspects of MHF and nuclear stimulation; gas delivery estimates; project administration; and costs and scheduling.
Date:
1973~
Creator:
unknown
System:
The UNT Digital Library
Colorado: basic data for thermal springs and wells as recorded in GEOTHERM
GEOTHERM sample file contains 225 records for Colorado. Three computer-generated indexes are found in appendices A, B, and C of this report. The indexes give one line summaries of each GEOTHERM record describing the chemistry of geothermal springs and wells in the sample file for Colorado. Each index is sorted by different variables to assist the user in locating geothermal records describing specific sites. Appendix A is sorted by the county name and the name of the source. Also given are latitude, longitude (both use decimal minutes), township, range, section, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix B is sorted by county, township, range, and section. Also given are name of source, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix C is first sorted into one-degree blocks by latitude, and longitude, and then by name of source. Adjacent one-degree blocks which are published as a 1:250,000 map are combined under the appropriate map name. Also given are GEOTHERM record identifier, and temperature (/sup 0/C). A bibliography is given in Appendix D.
Date:
May 1, 1983
Creator:
Bliss, J. D.
System:
The UNT Digital Library
Novel Concepts in Electrochemical Solar Cells. Third Quarterly Progress Report, November 15, 1979-January 15, 1980. [Molten Salt Electrolytes]
Efforts have been primarily directed toward evaluation of the room temperature molten salt electrolyte in terms of its overall performance for photovoltaic cells. Mass transport processes may prove to be the rate-limiting factor for such electrolytes, unless the concentration of the photo-active redox component can be increased and the solvent viscosity reduced. Acid-base surface chemistry of n-GaAs as occurs in aqueous systems, has been found present and its consequences will be further explored. The selection and optimization of PEC electrolytes is a complex task and we believe that a systems approach would facilitate in identifying the basic electrolyte properties needed. A preliminary analysis reveals that although some of the criteria for an electrolyte are definable precisely, others do require empirical experimentation. It can be concluded that relatively few electrolytes in current use are adequate and it would appear that greater efforts to develop electrolytes would be advantageous. The various types of electrolytes that could be used for PEC's have been identified. Good quality MoSe/sub 2/ single crystals can be grown and short circuit currents greater than previously reported have been achieved in an I/sub 2//I/sup -//Pt cell. A novel technique to produce photo-active films by anodization is being investigated, initially …
Date:
January 1, 1980
Creator:
DuBow, J.; Job, R. & Krishnan, R.
System:
The UNT Digital Library
Diosmacycloalkanes as models for the formation of hydrocarbons from surface methylenes
We are making progress on our investigation of the mechanism of olefin exchange with Os{sub 2}(C{sub 2}H{sub 4})(CO){sub 8}. We are probing this system by kinetic study of the reaction of Os{sub 2}(C{sub 2}H{sub 4})(CO){sub 8} with butyl acrylate (BA) under various pressures of ethylene.
Date:
May 1, 1992
Creator:
Norton, J.R.
System:
The UNT Digital Library
Wind Load Reduction for Heliostats
This report presents the results of wind-tunnel tests supported through the Solar Energy Research Institute (SERI) by the Office of Solar Thermal Technology of the US Department of Energy as part of the SERI research effort on innovative concentrators. As gravity loads on drive mechanisms are reduced through stretched-membrane technology, the wind-load contribution of the required drive capacity increases in percentage. Reduction of wind loads can provide economy in support structure and heliostat drive. Wind-tunnel tests have been directed at finding methods to reduce wind loads on heliostats. The tests investigated primarily the mean forces, moments, and the possibility of measuring fluctuating forces in anticipation of reducing those forces. A significant increase in ability to predict heliostat wind loads and their reduction within a heliostat field was achieved.
Date:
May 1, 1986
Creator:
Peterka, J. A.; Hosoya, N.; Bienkiewicz, B. & Cermak, J. E.
System:
The UNT Digital Library
Development of a Mobile Compressor and Utility Station
Report issued by the U.S. Bureau of Mines on the development of a mobile compressor and utility station in the oil-shale mine near Rifle, Colorado during 1949. The report includes photographs and illustrations of the mobile station.
Date:
July 1950
Creator:
Wright, Fred D. & Ballinger, Homer J.
System:
The UNT Digital Library
Mining Program: Bureau of Mines Oil-Shale Project, Rifle, Colorado
Report issued by the Bureau of Mines on the development of efficient mining methods for producing oil shale. Characteristics of the oil shale deposits of the Green River are presented. The results of core drilling and sampling in this area are also listed. This report includes tables, illustrations, maps, and photographs.
Date:
April 1948
Creator:
Gardner, E. D.
System:
The UNT Digital Library
The Leadville Drainage Tunnel, Lake County, Colorado
Report issued by the Bureau of Mines over the Leadville Drainage Tunnel. Descriptions and details about the tunnel are presented. This report includes tables, maps, illustrations, and photographs.
Date:
August 1949
Creator:
Elgin, Robert A.; Volin, M. E. & Townsend, James W.
System:
The UNT Digital Library
Lead-Zinc-Silver in the Poughkeepsie District and Part of the Upper Uncompahgre and Mineral Point Districts, Ouray and San Juan Counties, Colorado
Report issued by the Bureau of Mines over mining districts in Colorado. As noted in the introduction, "in this report the physical features, climate, and ore deposits of the districts are described, and a brief history of mining and production of lead, zinc, and silver is given" (p. 4). This report includes tables, illustrations, and maps.
Date:
September 1949
Creator:
Hazen, Scott W., Jr.
System:
The UNT Digital Library
Effect of Oil-Base Drilling Fluid Filtrate on Analysis of Cores from South Coles Levee, California, and Rangely, Colorado Fields
Report issued by the U.S. Bureau of Mines on the study of contamination of cores obtained with conventional core barrels. The effect of the oil-based drilling fluid and analysis of the cores are presented. The report includes tables, graphs, and illustrations.
Date:
August 1950
Creator:
Gates, Gates L.; Morris, Frank C. & Caraway, W. Hodge
System:
The UNT Digital Library
Some Innovations in Equipment For Scaling High Roofs and Mine Walls
Report issued by the U.S. Bureau of Mines describing the methods and equipment developed at the oil-shale mine near Rifle, Colorado. This report includes photographs and illustrations documenting this equipment.
Date:
October 1950
Creator:
Brown, Brinton C.; Wright, Fred D. & Ballinger, Homer J.
System:
The UNT Digital Library
Properties of Crude Oil From the Greasewood Flat Area in Colorado
Report issued by the U.S. Bureau of Mines on two samples of crude oil collected from the Greasewood Flat area of northwestern Colorado. These samples were analyzed for many characteristics, and an approximate summary of those characteristics are presented. The report contains two tables of data.
Date:
May 1932
Creator:
Rue, H. P.
System:
The UNT Digital Library
Investigation of Coal Deposits in the Coal Creek District, Gunnison County, Colorado: Progress Report 1
Report issued by the Bureau of Mines on studies of coal deposits of the Coal Creek district. The physicality, geology, and characteristics of samples are listed. This report includes tables, and a map.
Date:
April 1947
Creator:
Toenges, Albert L.; Turnbull, Louis A.; Davis, J. D. & Reynolds, D. A.
System:
The UNT Digital Library
Size Consist, Chemical Analysis, and Physical Properties of 2-1/2-Inch Subbituminous Slack from the Denver, Colorado Region
Report issued by the U.S. Bureau of Mines on sub-bituminous slack from Denver, Colorado. The characteristics and properties of 2-1/2 inch slack samples are listed. This report includes tables, graphs, maps, illustrations, and photographs.
Date:
August 1942
Creator:
Parry, V. F. & Landers, W. S.
System:
The UNT Digital Library
Trends in the Use of Energy in the Western States, With Particular Reference to Coal
Report issued by the U.S. Bureau of Mines on energy consumption in the western United States. A focus on coal as the primary energy source is presented. This report includes tables, graphs, maps, and illustrations.
Date:
January 1943
Creator:
Parry, V. F.
System:
The UNT Digital Library
Briquetting Subbituminous Coal
Report issued by the Bureau of Mines over briquetting of coal for development of more effective fuel. Materials, equipment, and processes are discussed. This report includes tables, illustrations, and photographs.
Date:
June 1943
Creator:
Parry, V. F. & Goodman, John B.
System:
The UNT Digital Library
Alert Systems for Missing Adults in Eleven States: Background and Issues for Congress
This report discusses the emerging development of nationwide alert systems to recover missing adults, such as those with mental impairment (such as Alzheimer's disease), developmental disabilities, or suicidal tendencies. This report provides an overview of such alert systems in 11 states: Colorado, Delaware, Florida, Georgia, Kentucky, North Carolina, Ohio, Oklahoma, Rhode Island, Texas, and Virginia. This report also provides a discussion of issues for Congress to consider with respect to the federal role, if any, in developing state alert programs for missing adults.
Date:
May 7, 2009
Creator:
Fernandes, Adrienne L. & Colello, Kirsten J.
System:
The UNT Digital Library
Exploration of Lead-Zinc Deposits in the Ross Basin-Lake Como Area, San Juan County, Colorado
Report issued by the Bureau of Mines over exploration of lead-zinc deposits in Colorado. The geology, location, and physical features of the deposits are discussed. This report includes tables, maps, photographs, and illustrations.
Date:
1959
Creator:
Hild, John H. & Rose, C. K.
System:
The UNT Digital Library
Exploration for Lead and Zinc at the Madonna Mine, Monarch Mining District, Chaffee County, Colorado
Report issued by the Bureau of Mines over exploration of the lead and zinc deposits of the Madonna Mine. Descriptions of the deposits are presented. This report includes tables, maps, and illustrations.
Date:
May 1956
Creator:
Hazen, Scott W., Jr.
System:
The UNT Digital Library
Origin of Primary and Diagenetic Carbonates in the Lacustrine Green River Formation (Eocene), Colorado and Utah
A report that used isotopic, mineralogic, and oil-yield data to delineate major hydrologic states, establish the origin of carbonate mineral phases, and determine the controls on the geochemical cycles of carbon and oxygen.
Date:
1996
Creator:
Pitman, Janet K.
System:
The UNT Digital Library