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Some Comments on the La Primavera Geothermal Field, Mexico

Description: 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 fluid… more
Date: December 15, 1983
Creator: A., Bernardo Dominguez & Lippmann, Marcelo J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Crustal Rock Fracture Mechanics for Design and Control of Artificial Subsurface Cracks in Geothermal Energy Extraction Engineering ({Gamma}-Project)

Description: 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 … more
Date: December 15, 1983
Creator: Abe, Hiroyuki & Takahashi, Hideaki
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Behaviors of Crack-Like Reservoirs by Means of Fracturing at Nigorikawa and Kakkonda Geothermal Fields

Description: 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
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Power Contro Energy Management and Market Systems

Description: More efficient use of the nation's electrical energy infrastructure will result in minimizing the cost of energy to the end user. Using real time electrical market information coupled with defined rules, market opportunities can be identified that provide economic benefit for both users and marketers of electricity. This report describes the design of one such system and the features a fully functional system would provide. This report documents several investigated methods of controlling load … more
Date: December 15, 2005
Creator: Addison, Tom & Stanbury, Andrew
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Urban Form Energy Use and Emissions in China: Preliminary Findings and Model Proof of Concept

Description: Urbanization is reshaping China's economy, society, and energy system. Between 1990 and 2008 China added more than 300 million new urban residents, bringing the total urbanization rate to 46%. The ongoing population shift is spurring energy demand for new construction, as well as additional residential use with the replacement of rural biomass by urban commercial energy services. This project developed a modeling tool to quantify the full energy consequences of a particular form of urban reside… more
Date: December 15, 2010
Creator: Aden, Nathaniel; Qin, Yining & Fridley, David
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Advancing Reverse Electrowetting-on-Dielectric from Planar to Rough Surface Electrodes for High Power Density Energy Harvesting

Description: Article presenting electrical and multiphysics-based modeling approaches of REWOD energy harvester using structured rough surface electrodes. By enhancing the overall available surface area, an increase in the overall capacitance is achieved.
Date: December 15, 2021
Creator: Adhikari, Pashupati R.; Patwary, Adnan B.; Kakaraparty, Karthik; Gunti, Avinash; Reid, Russell C. & Mahbub, Ifana
Item Type: Refine your search to only Article
Partner: UNT College of Engineering
open access

Restoring Sustainable Forests on Appalachian Mined Lands for Wood Products, Renewable Energy, Carbon Sequestration, and Other Ecosystems Services Quarterly Report

Description: The overall purpose of this project is to evaluate the biological and economic feasibility of restoring high-quality forests on mined land, and to measure carbon sequestration and wood production benefits that would be achieved from forest restoration procedures. In this segment of work, our goal was to review methods for estimating tree survival, growth, yield and value of forests growing on surface mined land in the eastern coalfields of the USA, and to determine the extent to which carbon se… more
Date: December 15, 2003
Creator: Aggett, Jonathan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Gamma-ray optical counterpart search experiment (GROCSE)

Description: The requirements of a gamma-ray burst optical counterpart detector are reviewed. By taking advantage of real-time notification of bursts, new instruments can make sensitive searches while the gamma-ray transient is still in progress. A wide field of view camera at Livermore National Laboratories has recently been adapted for detecting GRB optical counterparts to a limiting magnitude of 8. A more sensitive camera, capable of reaching m{sub upsilon} = 14, is under development.
Date: December 15, 1993
Creator: Akerlof, C.; Fatuzzo, M.; Lee, B.; Bionta, R.; Ledebuhr, A.; Park, H. S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Reactor and Materials Technology monthly report 02 Program, November 1965

Description: Metallic fuel development is reported concerning N-reactor fuel element failures, target element development, target element closure welds, alternate target element closure systems, alternate uranium compositions, N-fuel support development, hot die size fuel cladding, improved closures for ThO{sub 2} elements, and N-reactor meltdown tests in the IRP. Corrosion and water quality studies are proceeding with emphasis on downstream pitting of aluminium process tubes, hydride formation in zircaloy … more
Date: December 15, 1965
Creator: Albaugh, F. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Neutrino telescopes as a direct probe of supersymmetrybreaking

Description: We consider supersymmetric models where the scale of supersymmetry breaking lies between 5 x 10{sup 6} GeV and 5 x 10{sup 8} GeV. In this class of theories, which includes models of gauge mediated supersymmetry breaking, the lightest supersymmetric particle is the gravitino. The next to lightest supersymmetric particle is typically a long lived charged slepton with a lifetime between a microsecond and a second, depending on its mass. Collisions of high energy neutrinos with nucleons in the eart… more
Date: December 15, 2003
Creator: Albuquerque, Ivone; Burdman, Gustavo & Chacko, Z.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Physics of arcing, and implications to sputter deposition

Description: Arcing is a well-known, unwanted discharge regime observed on the surface of sputtering targets. The discharge voltage breaks down to less than 50 V while the current jumps to elevated levels. Arcing is unwanted because it prevents uniform deposition and creates particulates. The issue of arcing has been dealt with by target surface conditioning and by using modern power supplies that have arc suppression incorporated. With increasing quality requirements in terms of uniformity of coatings, and… more
Date: December 15, 2003
Creator: Anders, Andre
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Heavy leptons at the SSC

Description: It is argued that detection of heavy leptons at the Superconducting Super Collider seems to be very difficult but perhaps not impossible. The feasibility is shown to depend critically upon the ability to identify events with W's decaying hadronically and missing transverse momentum. (LEW)
Date: December 15, 1987
Creator: Anderson, G. & Hinchliffe, I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Regional Heat Sources and the Active and Break Phases of Boreal Summer Intraseasonal Variability

Description: The boreal summer intraseasonal variability (BSISV) associated with the 30-50 day mode is represented by the co-existence of three components, poleward propagation of convection over the Indian and tropical west Pacific longitudes and eastward propagation along the equator. The hypothesis that the three components influence each other has been investigated using observed OLR, NCEP-NCAR reanalysis, and solutions from an idealized linear model. The null hypothesis is that the three components are… more
Date: December 15, 2003
Creator: Annamalai, H & Sperber, K R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Balloon-Borne Gamma-Ray Polarimeter (PoGO) to Study Black Holes, Pulsars, and AGN Jets: Design and Calibration(SULI)

Description: Polarization measurements at X-ray and gamma-ray energies can provide crucial information on the emission region around massive compact objects such as black holes and neutron stars. The Polarized Gamma-ray Observer (PoGO) is a new balloon-borne instrument designed to measure polarization from such astrophysical objects in the 30-100 keV range, under development by an international collaboration with members from United States, Japan, Sweden and France. The PoGO instrument has been designed by … more
Date: December 15, 2005
Creator: Apte, Zachary & /SLAC, /Hampshire Coll.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reactor Engineering Division Quarterly Report September 1, 1952 through November 30, 1952

Description: Report issued by the Argonne National Laboratory covering the quarterly report from the Reactor Engineering Division. A summary of reactor programs, designs, development, and experiments are presented. This report includes tables, illustrations, and photographs.
Date: December 15, 1952
Creator: Argonne National Laboratory. Reactor Engineering Division.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reactor Engineering Division Quarterly Report September 1, 1953 through November 30, 1953

Description: Report issued by the Argonne National Laboratory covering the quarterly report from the Reactor Engineering Division. A summary of reactor programs, designs, development, and experiments are presented. This report includes tables, illustrations, and photographs.
Date: December 15, 1953
Creator: Argonne National Laboratory. Reactor Engineering Division.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The SPEAR3 Vacuum System - An Analysis of the First Two Years of Operation (2004 and 2005)

Description: SPEAR 3, a synchrotron radiation source at the Stanford Linear Accelerator Center, has been in operation for the past two years. SPEAR 3 was designed to achieve high beam lifetimes while operating at a higher current level than previously achieved with SPEAR 2. Maintaining high electron beam lifetimes within the ring allows users to perform their experiments with a consistent supply of high current synchrotron radiation. The purpose of this analysis is to evaluate the SPEAR 3 vacuum system's pe… more
Date: December 15, 2005
Creator: Armenta, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Gas Chemistry in Geothermal Systems

Description: Five new gas geothermometers are introduced. They are useful for predicting subsurface temperatures in water dominated geothermal systems. The geothermometers use data on CO{sub 2}, H{sub 2}S and H{sub 2} concentrations in fumarole steam as well as CO{sub 2}/H{sub 2} and H{sub 2}S/H{sub 2} ratios. It is demonstrated that the gas composition of fumarole steam may be used with or withour drillhole data to evaluate steam condensation in the upflow zones of geothermal systems. Uncertainty exists, h… more
Date: December 15, 1983
Creator: Arnorsson, Stefan & Gunnlaugsson, Einar
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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