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in subjects: "Zones"

open access

Interpretation of a dipole-dipole electrical resistivity survey, Colado geothermal area, Pershing County, Nevada

An electrical resistivity survey in the Colado geothermal area, Pershing County, Nevada has defined areas of low resistivity on each of five lines surveyed. Some of these areas appear to be fault controlled. Thermal fluids encountered in several drill holes support the assumption that the hot fluids may be associated with areas of low resistivity. The evidence of faulting as interpreted from modeling of the observed resistivity data is therefore particularly significant since these structures m… more

Date: September 1, 1980

Creator: Mackelprang, C.E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

California solar data manual

Factors that determined the data contents of the manual are presented. Estimates of errors in the data are provided, and the impact of these errors on solar design is discussed. The state is divided into 15 solar zones of roughly similar solar radiation conditions, which are illustrated along with page references to the most relevant solar and climate data. A guide to the data tables and graphs is provided, which are displayed under solar, climate, and sky charts. A guide is given to simplified… more

Date: January 1, 1978

Creator: Berdahl, P.; Grether, D.; Martin, M. & Wahlig, M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Solar envelope zoning: application to the city planning process. Los Angeles case study

Solar envelope zoning represents a promising approach to solar access protection. A solar envelope defines the volume within which a building will not shade adjacent lots or buildings. Other solar access protection techniques, such as privately negotiated easements, continue to be tested and implemented but none offer the degree of comprehensiveness evident in this approach. Here, the City of Los Angeles, through the Mayor's Energy Office, the City Planning Department, and the City Attorney's O… more

Date: June 1, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Cassette blanket and vacuum building: key elements in fusion reactor maintenance

The integration of two concepts important to fusion power reactors is discussed. The first concept is the vacuum building which improves upon the current fusion reactor designs. The second concept, the use of the cassette blanket within the vacuum building environment, introduces four major improvements in blanket design: cassette blanket module, zoning concept, rectangular blanket concept, and internal tritium recovery. (MHR)

Date: October 3, 1977

Creator: Werner, R.W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Adaptive-mesh zoning by the equipotential method

An adaptive mesh method is proposed for the numerical solution of differential equations which causes the mesh lines to move closer together in regions where higher resolution in some physical quantity T is desired. A coefficient D > 0 is introduced into the equipotential zoning equations, where D depends on the gradient of T . The equations are inverted, leading to nonlinear elliptic equations for the mesh coordinates with source terms which depend on the gradient of D. A functional form of D … more

Date: April 1, 1981

Creator: Winslow, A.M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Research drilling in young silicic volcanoes

Magmatic activity, and particularly silicic magmatic activity, is the fundamental process by which continental crust forms and evolves. The transport of magma from deep crustal reservoirs to the surface is a neglected but important aspect of magmatic phenomena. It encompasses problems of eruptive behavior, hydrothermal circulation, and ore deposition, and must be understood in order to properly interpret deeper processes. Drilling provides a means for determining the relationship of shallow int… more

Date: June 30, 1989

Creator: Eichelberger, J.C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Development of an assessment methodology for geopressured zones of the upper Gulf Coast based on a study of abnormally pressured gas fields in South Texas. Progress report, 1 March 1976--31 May 1976

During the fourth quarterly reporting period project change-in-scope was approved extending the study area to include Brooks, the remainder of Kenedy and Live Oak Counties. An interim progress report covering that reporting period is presented. Effort during the quarter was directed toward (1) locating drillstem and production test results from geopressured formations, (2) determining formation parameters in an additional large number of producing wells, and (3) searching production records for… more

Date: May 1976

Creator: Swanson, R. K.; Oetking, P.; Osoba, J. S. & Hagens, R. C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Spatial and temporal variability of microbes in selected soils at the Nevada Test Site

Large areas encompassing almost 800 hectares on the Nevada Test Site, Nellis Air Force Range and the Tonopah Test Range are contaminated with plutonium. Decontamination of plutonium from these sites may involve removal of plants and almost 370,000 cubic meters of soil. The soil may be subjected to a series of processes to remove plutonium. After decontamination, the soils will be returned to the site and revegetated. There is a paucity of information on the spatial and temporal distribution of … more

Date: December 31, 1993

Creator: Angerer, J. P.; Winkel, V. K.; Ostler, W. K. & Hall, P. F.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Dynamical zoning within a Lagrangian mesh by use of DYN, a stellar pulsation code

No Description Available.

Date: February 1, 1977

Creator: Castor, J. I.; Davis, C. G. & Davison, D. K.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Volume calculation and geometry checking in a Monte Carlo transport code. [For checking TARTNP input]

An algorithm for finding cross-sectional areas of zones in a Monte Carlo transport code is given. The method is well suited to problems involving thin shells, and includes the capability of checking for gaps and overlaps. 1 table.

Date: July 1, 1977

Creator: Dubois, P. F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Propagation of Normal Zones in Composite Superconductors

This paper describes calculations of propagation velocities of normal zones in composite superconductors. Full accounting is made for (1) current sharing, (2) the variation with temperature of the thermal conductivity of the copper matrix, and the specific heats of the matrix and the superconductor, and (3) the variation with temperature of the steady-state heat transfer at a copper-helium interface in the nucleate-boiling, transition, and film-boiling ranges. The theory, which contains no adju… more

Date: August 1, 1976

Creator: Dresner, Lawrence

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

InterTechnology Corporation proposed systems level plan for solar heating and cooling commercial buildings. National Solar Demonstration Program. Executive summary

The goals of the National Solar Heating and Cooling Demonstration Program for non-residential buildings are embodied in the following: (1) Demonstrate the ultimate economic and technical feasibility of solar heating and combined heating and cooling. (2) Stimulate industry to produce and market solar equipment. (3) Stimulate a commercial market for solar systems. The systems level plan is designed to address the above stated goals as they relate to the building community associated with the comm… more

Date: May 1, 1976

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Utilization of seismic exploration technology for high resolution mapping of a geothermal reservoir. Final report

A seismic reflection survey using the ''Vibroseis'' technique and a combination of both compressional and horizontally polarized shear waves has been successfully completed over the East Mesa Geothermal Field. The interpreted results of the survey demonstrate that: (1) The compressional waves have the resolving power to detect anomalous conditions such as faults and fracture zones of critical importance in geothermal reservoir investigations. (2) The shear waves have penetrated to the target de… more

Date: April 1, 1977

Creator: Goupillaud, P. L. & Cherry, J. T.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Preliminary studies of tunnel interface response modeling using test data from underground storage facilities.

In attempting to detect and map out underground facilities, whether they be large-scale hardened deeply-buried targets (HDBT's) or small-scale tunnels for clandestine border or perimeter crossing, seismic imaging using reflections from the tunnel interface has been seen as one of the better ways to both detect and delineate tunnels from the surface. The large seismic impedance contrast at the tunnel/rock boundary should provide a strong, distinguishable seismic response, but in practice, such s… more

Date: November 1, 2010

Creator: Sobolik, Steven Ronald & Bartel, Lewis Clark

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Ultrasonic Attenuation in Lead

The absorption of longitudinal ultrasonic waves was studied as a function of transverse magnetic field in pure single crystals of lead at 1.2 deg K. The results were found to be generally consistent with the Fermi surface of lead suggested by Gold. In particular a detailed study of the magneto-acoustic oscillations, as a function of sample orientation and field direction, allowed the determination of some of the dimensions of the hole surface in the second Brillouin zone and revealed a number o… more

Date: January 1, 1963

Creator: Mackintosh, A.R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Using hyperspectral plant signatures for CO2 leak detection during the 2008 ZERT CO2 sequestration field experiment in Bozeman, Montana

Hyperspectral plant signatures can be used as a short-term, as well as long-term (100-yr timescale) monitoring technique to verify that CO2 sequestration fields have not been compromised. An influx of CO2 gas into the soil can stress vegetation, which causes changes in the visible to nearinfrared reflectance spectral signature of the vegetation. For 29 days, beginning on July 9th, 2008, pure carbon dioxide gas was released through a 100-meter long horizontal injection well, at a flow rate of 30… more

Date: November 1, 2009

Creator: Male, E. J.; Pickles, W. L.; Silver, E. A.; Hoffmann, G. D.; Lewicki, J.; Apple, M. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Pressure perturbations from geologic carbon sequestration: Area-of-review boundaries and borehole leakage driving forces

We investigate the possibility that brine could be displaced upward into potable water through wells. Because of the large volumes of CO2 to be injected, the influence of the zone of elevated pressure on potential conduits such as well boreholes could extend many kilometers from the injection site-farther than the CO2 plume itself. The traditional approach to address potential brine leakage related to fluid injection is to set an area of fixed radius around the injection well/zone and to examin… more

Date: July 1, 2009

Creator: Nicot, J.-P.; Oldenburg, C.M.; Bryant, S.L. & Hovorka, S.D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

100-N Area Strontium-90 Treatability Demonstration Project: Food Chain Transfer Studies for Phytoremediation Along the 100-N Columbia River Riparian Zone

Strontium-90 (90Sr) exceeds the U.S. Environmental Protection Agency’s drinking water standards for groundwater (8 picocuries/L) by as much as a factor of 1000 at several locations within the Hanford 100-N Area and along the 100-N Area Columbia River shoreline). Phytoextraction, a managed remediation technology in which plants or integrated plant/rhizosphere systems are employed to phytoextract and/or sequester 90Sr, is being considered as a potential remediation system along the riparian zone … more

Date: April 1, 2009

Creator: Fellows, Robert J.; Fruchter, Jonathan S. & Driver, Crystal J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Geochemical Analyses of Surface and Shallow Gas Flux and Composition Over a Proposed Carbon Sequestration Site in Eastern Kentucky

Using soil gas chemistry to detect leakage from underground reservoirs (i.e. microseepage) requires that the natural range of soil gas flux and chemistry be fully characterized. To meet this need, soil gas flux (CO{sub 2}, CH{sub 4}) and the bulk (CO{sub 2}, CH{sub 4}) and isotopic chemistry ({delta}{sup 13}C-CO2) of shallow soil gases (<1 m, 3.3 ft) were measured at 25 locations distributed among two active oil and gas fields, an active strip mine, and a relatively undisturbed research fore… more

Date: December 31, 2009

Creator: Parris, Thomas; Solis, Michael & Takacs, Kathryn

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Analysis of Stresses and Deflections in Top Support Grid, PWR Reactor. Final Report

The top grid of the PWR reactor core assembly is treated as a simply supported circular plate. The theory of plate is applied to the grid umder mechanical loads. The thermal stress problem is analyzed by treating the plate as under combined action of a laterally distributed load and forces in the middle plane of the plate. The load distribution is calculated from the temperature variation over the grid. The thermal stress problem then is equivalent to two problems: one, of bendimg of plate; and… more

Date: June 1, 1957

Creator: Yen, T. C. & Vining, R. E., Jr.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Geomechanical response of permafrost-associated hydrate deposits to depressurization-induced gas production

In this simulation study, we analyzed the geomechanical response during depressurization production from two known hydrate-bearing permafrost deposits: the Mallik (Northwest Territories, Canada) deposit and Mount Elbert (Alaska, USA) deposit. Gas was produced from these deposits at constant pressure using horizontal wells placed at the top of a hydrate layer (HL), located at a depth of about 900 m at the Mallik and 600 m at the Mount Elbert. The simulation results show that general thermodynami… more

Date: February 1, 2009

Creator: Rutqvist, J.; Moridis, G.J.; Grover, T. & Collett, T.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Assessment of geothermal resource potential - Pasco Basin and Vicinity, Washington

The geothermal resource potential of the Pasco Basin and vicinity was assessed and found to be limited to the potential occurrence of low-temperature (less than 90/sup 0/C) geothermal systems. High- and intermediate-temperature systems are believed not to exist because of the apparent lack of a sufficient heat source. Potential low-temperature systems would be hydrothermal convection systems in which meteoric water circulating in the normal heat flow of the region is heated to temperatures of a… more

Date: August 1, 1981

Creator: Murphy, P. J. & Johnpeer, G. D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Advanced Neutron Source Reactor zoning, shielding, and radiological optimization guide

In the design of major nuclear facilities, it is important to protect both humans and equipment excessive radiation dose. Past experience has shown that it is very effective to apply dose reduction principles early in the design of a nuclear facility both to specific design features and to the manner of operation of the facility, where they can aid in making the facility more efficient and cost-effective. Since the appropriate choice of radiological controls and practices varies according to th… more

Date: August 1995

Creator: Westbrook, J. L. & DeVore, J. R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Purification of Uranium by Zone-Refining Techniques.

No Description Available.

Date: January 1, 1967

Creator: Bieber, J. L.; Schreyer, J. M. & Williams, E. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department