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Some Comments on the La Primavera Geothermal Field, Mexico
The La Primavera geothermal field is located about 20 km west of the city of Guadalajara, Jalisco, in the western part of the Mexican Neovolcanic Axis. Initial results of five deep exploration wells (down to 2000 m depth) were very promising; measured downhole temperatures exceed 300/sup 0/C. During production, however, downhole temperatures dropped, and the chemistry of the fluids changed. The analysis of geologic, mineralogic, geochemical, and well completion data indicate that colder fluids flow down the wellbore from shallower aquifers cooling the upper zones of the geothermal reservoir. This problem is attributed to inadequate well completions. Doubts have arisen about continuing the exploration of the field because of the somewhat disappointing drilling results. However, a more thorough analysis of all available data indicates that a good geothermal prospect might exist below 3000 m, and that it could be successfully developed with appropriately located and completed wells.
Date:
December 1, 1983
Creator:
A., B. Dominguez & Lippmann, M. J.
Object Type:
Article
System:
The UNT Digital Library
Some Comments on the La Primavera Geothermal Field, Mexico
The La Primavera geothermal field is located about 20 km west of the city of Guadalajara, Jalisco, in the western part of the Mexican Neovolcanic Axis. Initial results of five deep exploration wells (down to 2000 m depth) were very promising; measured downhole temperatures exceed 300{degrees}C. During production, however, downhole temperatures dropped, and the chemistry of the fluids changed. The analysis of geologic, mineralogic, geochemical, and well completion data indicate that colder fluids flow down the wellbore from shallower aqifers cooling the upper zones of the gothermal reservoir. This problem is attributed to inadequate well completions. Doubts have arisen about continuing the exploration of the field because of the somewhat disappointing drilling results. However, a more thorough analysis of all available data indicates that a good geothermal prospect might exist below 3000 m, and that it could be successfully developed with appropriately located and completed wells.
Date:
December 15, 1983
Creator:
A., Bernardo Dominguez & Lippmann, Marcelo J.
Object Type:
Article
System:
The UNT Digital Library
[AIDS Resource Center PSA]
Flyer for the AIDS Resource Center advertising services that the organization provides as part of its community outreach and educational programming.
Date:
[1983..1988]
Creator:
AIDS Resource Center
Object Type:
Text
System:
The UNT Digital Library
Conceptual Design of a Rapid-Cycling Synchrotron for the KFA-Juelich Spallation Neutron Source
An accelerator group was established at ANL by the request of KFA-Juelich to carry out a conceptual design study and cost estimate for a rapid-cycling synchrotron as a possible first stage program on spallation neutron sources at KFA-Juelich. This set of notes is the individual notes which form the basis of the final report under this proposal prepared in January 1983. This document contains 37 papers/notes for Advanced Accelerator Development - Neutron Source Series Notes...numbered AAD-N-1 through AAD-N-37. Each note or paper is written by various authors.
Date:
January 1983
Creator:
ANL-KFA Study Group
Object Type:
Report
System:
The UNT Digital Library
Aquatic pathways model to predict the fate of phenolic compounds
Organic materials released from energy-related activities could affect human health and the environment. To better assess possible impacts, we developed a model to predict the fate of spills or discharges of pollutants into flowing or static bodies of fresh water. A computer code, Aquatic Pathways Model (APM), was written to implement the model. The computer programs use compartmental analysis to simulate aquatic ecosystems. The APM estimates the concentrations of chemicals in fish tissue, water and sediment, and is therefore useful for assessing exposure to humans through aquatic pathways. The APM will consider any aquatic pathway for which the user has transport data. Additionally, APM will estimate transport rates from physical and chemical properties of chemicals between several key compartments. The major pathways considered are biodegradation, fish and sediment uptake, photolysis, and evaporation. The model has been implemented with parameters for distribution of phenols, an important class of compounds found in the water-soluble fractions of coal liquids. Current modeling efforts show that, in comparison with many pesticides and polyaromatic hydrocarbons (PAH), the lighter phenolics (the cresols) are not persistent in the environment. The properties of heavier molecular weight phenolics (indanols, naphthols) are not well enough understood at this time to make …
Date:
April 1, 1983
Creator:
Aaberg, R.L.; Peloquin, R.A.; Strenge, D.L. & Mellinger, P.J.
Object Type:
Report
System:
The UNT Digital Library
Aquatic Pathways Model to predict the fate of phenolic compounds. Appendixes A through D
Organic materials released from energy-related activities could affect human health and the environment. We have developed a model to predict the fate of spills or discharges of pollutants into flowing or static bodies of fresh water. A computer code, Aquatic Pathways Model (APM), was written to implement the model. The APM estimates the concentrations of chemicals in fish tissue, water and sediment, and is therefore useful for assessing exposure to humans through aquatic pathways. The major pathways considered are biodegradation, fish and sediment uptake, photolysis, and evaporation. The model has been implemented with parameters for the distribution of phenols, an important class of compounds found in the water-soluble fractions of coal liquids. The model was developed to estimate the fate of liquids derived from coal. Current modeling efforts show that, in comparison with many pesticides and polyaromatic hydrocarbons (PAH), the lighter phenolics (the cresols) are not persistent in the environment. For the twelve phenolics studied, biodegradation appears to be the major pathway for elimination from aquatic environments. A pond system simulation of a spill of solvent-refined coal (SRC-II) materials indicates that phenol, cresols, and other single cyclic phenolics are degraded to 16 to 25 percent of their original concentrations within …
Date:
April 1, 1983
Creator:
Aaberg, R.L.; Peloquin, R.A.; Strenge, D.L. & Mellinger, P.L.
Object Type:
Report
System:
The UNT Digital Library
An Analysis of an Environmental Performance with the use of Light and Projected Photographic Imagery
The primary objective of this creative project was to create an environmental performance through the use of light as the principal medium. Most of the photographic imagery had been completed. The remaining task involved creating an effective and workable system to integrate the projected imagery with the neon light placements. Each system, illustrated in the figures, attempted to create a different approach in using the light mediums.
Date:
May 1983
Creator:
Aaboe, Richard David
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Convergence of Infinite Series
The purpose of this paper is to examine certain questions concerning infinite series. The first chapter introduces several basic definitions and theorems from calculus. In particular, this chapter contains the proofs for various convergence tests for series of real numbers. The second chapter deals primarily with the equivalence of absolute convergence, unconditional convergence, bounded multiplier convergence, and c0 multiplier convergence for series of real numbers. Also included in this chapter is a proof that an unconditionally convergent series may be rearranged so that it converges to any real number desired. The third chapter contains a proof of the Silverman-Toeplitz Theorem together with several applications.
Date:
August 1983
Creator:
Abbott, Catherine Ann
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Mechanical design of a heavy-ion RFQ
The mechanical design and construction of a 199.3 MHz heavy ion RFQ for charge states q/A as low as 0.14 is described. The vane supports and positioning adjustments are significant features of this design. They provide the capability of achieving the precision vane alignment required. The maximum difference between calculated and measured apertures between the vanes is 0.0035 inches, and the average difference is 0.0010 inches. Various important aspects of the design and construction including material selection and plating, RF joints, thermal loading and vacuum system are described. Assembly techniques, methods of mechanical measurement, alignment and structure stability are discussed in detail.
Date:
March 1, 1983
Creator:
Abbott, S.; MacGill, R. & Yourd, R.
Object Type:
Article
System:
The UNT Digital Library
INTOR Impurity Control and First Wall System
The highlights of the recent INTOR effort on examining the key issues of the impurity control/first wall system are summarized. The emphasis of the work was an integrated study of the edge-region physics, plasma-wall interaction, materials, engineering and magnetic considerations associated with the poloidal divertor and pump limiter. The development of limiter and divertor collector plate designs with an acceptable lifetime was a major part of the work.
Date:
April 1, 1983
Creator:
Abdou, M. A.
Object Type:
Report
System:
The UNT Digital Library
Demonstration Tokamak Power Plant
A conceptual design for a tokamak demonstration power plant (DEMO) was developed. A large part of the study focused on examining the key issues and identifying the R and D needs for: (1) current drive for steady-state operation, (2) impurity control and exhaust, (3) tritium breeding blanket, and (4) reactor configuration and maintenance. Impurity control and exhaust will not be covered in this paper but is discussed in another paper in these proceedings, entitled Key Issues of FED/INTOR Impurity Control System.
Date:
January 1, 1983
Creator:
Abdou, M.; Baker, C.; Brooks, J.; Ehst, D.; Mattas, R.; Smith, D. L. et al.
Object Type:
Article
System:
The UNT Digital Library
Crustal Rock Fracture Mechanics for Design and Control of Artificial Subsurface Cracks in Geothermal Energy Extraction Engineering ({Gamma}-Project)
Recently a significant role of artificial and/or natural cracks in the geothermal reservoir has been demonstrated in the literatures (Abe, H., et al., 1983, Nielson, D.L. and Hullen, J.B., 1983), where the cracks behave as fluid paths and/or heat exchanging surfaces. Until now, however, there are several problems such as a design procedure of hydraulic fracturing, and a quantitative estimate of fluid and heat transfer for reservoir design. In order to develop a design methodology of geothermal reservoir cracks, a special distinguished research project, named as ''{Lambda}-Project'', started at Tohoku University (5 years project, 1983-1988). In this project a basic fracture mechanics model of geothermal reservoir cracks is being demonstrated and its validation is being discussed both theoretically and experimentally. This paper descibes an outline of ''{Lambda}-Project''.
Date:
December 15, 1983
Creator:
Abe, Hiroyuki & Takahashi, Hideaki
Object Type:
Article
System:
The UNT Digital Library
Behaviors of Crack-Like Reservoirs by Means of Fracturing at Nigorikawa and Kakkonda Geothermal Fields
A basic concept of the geothermal reservoir as a set of cracks is first presented. Extensions of subsurface cracks during well stimulation treatments at Nigorikawa(Mori) and closure operations of production well-head valves at Kakkonda are analysed and their behaviors are demonstrated based on results of long-distance AE Measurements.
Date:
December 15, 1983
Creator:
Abe, Hiroyuki; Takahashi, Hideaki; Nakatsuka, Katsuto; Niitsuma, Hiroaki & Takanohashi, Morihiko
Object Type:
Article
System:
The UNT Digital Library
Elastic Neutrino-Electron Scattering: A Progress Report on Exp734 at Brookhaven
I will report preliminary results on elastic neutrino-electron scattering from data taken with the 200 ton segmented liquid scintillator - proportional drift-tube neutrino detector at Brookhaven. Features of the detector (such as the active target and long radiation length) permit a uniquely clean signal. Prospects of results from the completed analysis and further data taking are discussed.
Date:
January 1, 1983
Creator:
Abe, K.; Ahrens, L. A. & Amako, K.
Object Type:
Report
System:
The UNT Digital Library
Progress in an Experiment to Measure Elastic Nu. Mu. E. -->. Nu. Mu. E Scattering
The experimental setup and preliminary results of nu..mu.. + e elastic scattering measurements are described. (WHK)
Date:
January 1, 1983
Creator:
Abe, K.; Ahrens, L. A. & Amako, K.
Object Type:
Article
System:
The UNT Digital Library
Shallow land burial technology - ARID
Scope of the tasks being performed by Los Alamos will be identified. Emphasis will be placed upon the geotechnical work. Important geotechnical properties of a low-level waste disposal site include hydraulic conductivity consolidation, and shear strength of the applicable medium. The hydraulic conductivity of crushed Bandelier tuff has been assessed using the instantaneous profile method. The best fit of hydraulic conductivity as a function of water content was found to be a power function. The coefficient of consolidation was difficult to measure because of the relatively high hydraulic conductivity. The repose angle for crushed tuff is higher than the normally expected range. This is probably because of a higher than average angularity and surface roughness. The high coefficient of consolidation and high internal friction angle make finely crushed tuff a material with ideal mechanical characteristics. The drawback is that a high coefficient of consolidation is linked to a high hydraulic conductivity.
Date:
January 1, 1983
Creator:
Abeele, W. V.; DePoorter, G. L.; Hakonson, T. E. & Nyhan, J. W.
Object Type:
Article
System:
The UNT Digital Library
Singin' Texas
Collected information about popular folk music of Texas, including songs about hunting, love, nature, dancing, and religion, as well as information about the history of folk music in the state. The index begins on page 181.
Date:
1983
Creator:
Abernethy, Francis Edward
Object Type:
Book
System:
The UNT Digital Library
Singin' Texas
Sound recording of classic Texas songs performed by Francis Edward (F. E.) Abernethy. This recording was produced to accompany the first edition of Abernethy's book Singin' Texas, Texas Folklore Society publication number ExB 18. Some of the songs are complete but others are only partially performed. Between songs are short spoken portions explaining the lyrics and history of the music. Some of the songs are supported and woven together by a narrative while others are only partially performed, leaving the rest of the song to be described and summarized by Abernethy. The songs "Cuba" and "Great God, Attend" are sung by the congregation at Harris Chapel near Marshall, Texas for their 100th Anniversary in 1967. The song "Give the World a Smile" comes from the Stamps-Baxter Music Company archive. And the song "The Great Speckled Bird" is performed by the East Texas Strings Ensemble.
Date:
1983
Creator:
Abernethy, Francis Edward
Object Type:
Sound
System:
The UNT Digital Library
Singin' Texas
Sound recording of classic Texas songs performed by Francis Edward (F. E.) Abernethy. This recording was produced to accompany the first edition of Abernethy's book Singin' Texas, Texas Folklore Society publication number ExB 18. Some of the songs are complete but others are only partially performed. Between songs are short spoken portions explaining the lyrics and history of the music. Some of the songs are supported and woven together by a narrative while others are only partially performed, leaving the rest of the song to be described and summarized by Abernethy.
Date:
1983
Creator:
Abernethy, Francis Edward
Object Type:
Sound
System:
The UNT Digital Library
[Abilene City Council Minutes: 1983]
Ledger containing minutes of the City Council in Abilene, Texas documenting the group's discussions and activities from January to July 1983.
Date:
1983-01/1983-07
Creator:
Abilene (Tex.)
Object Type:
Book
System:
The Portal to Texas History
[Abilene City Council Minutes: 1983-1984]
Ledger containing minutes of the City Council in Abilene, Texas documenting the group's discussions and activities from August 1983 to December 1984.
Date:
1983-08-04/1984-12-20
Creator:
Abilene (Tex.)
Object Type:
Book
System:
The Portal to Texas History
[Abilene City Ordinances: 1983]
Ledger containing ordinances/resolutions passed by the city of Abilene, Texas during calendar year 1983.
Date:
1983
Creator:
Abilene (Tex.)
Object Type:
Legal Document
System:
The Portal to Texas History
[Abilene City Resolutions: 1983]
Ledger containing resolutions passed by the city of Abilene, Texas during calendar year 1983.
Date:
1983
Creator:
Abilene (Tex.)
Object Type:
Legal Document
System:
The Portal to Texas History
Abilene Fire Department Annual Report: 1984
Annual report of the Abilene Fire Department describing the organization and administration, with updates on goals, activities, and accomplishments during fiscal year 1983/1984.
Date:
1983/1984
Creator:
Abilene (Tex.). Fire Department.
Object Type:
Report
System:
The Portal to Texas History