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A Field Test of Selected Insects and Pathogens for Control of Waterhyacinths, Report 1: Preliminary Results for the 1975-76 Season

Description: "During the growing season of 1975, a field experiment was initiated on Lake Concordia, Louisiana, to test the potential effectiveness of selected organisms as control agents against waterhyacinths, Eichhornia crassipes (Mart.) Solms. [...] This report describes the experiment, presents the collected data, and summarizes the observations. Statistical analyses and interpretation of the data are also presented" (abstract).
Date: September 1977
Creator: Addor, Eugene E.
Partner: UNT Libraries Government Documents Department

D-ORBITAL DIRECTED PHOTOEMISSION FROM MANGANESE FLUORIDE SINGLE CRYSTALS USING A1Kalpha RADIATION

Description: Angle-resolved photoemission energy distributions (PED's) were obtained from valence bands of MnF{sub 2} single crystals using AlK{alpha} radiation. A pronounced variation in the PED's was observed as the electron take-off angle was varied relative to the crystalline axes, for the (111) crystal face. The observed variation is attributed to the t{sub 2g} and e{sub g} symmetry properties of the manganese 3d initial state wave functions and is well described by an angle-dependent transition-matrix model. The results are in good agreement with the multi-configurational Hartree-Fock calculations of Viinikka and Bagus.
Date: September 1, 1977
Creator: Sherwood, P.M.A.; McFeely, F.R.; Kowalczyk, S.P. & Shirley, D.A.
Partner: UNT Libraries Government Documents Department

CURRENT RESEARCH TOWARDS IMAGING BIOLOGICAL MOLECULES USING FIELD DESORPTION MICROSCOPY AND FIELD ION MICROSCOPY OF DIAMOND

Description: Work is currently in progress investigating the possibility of imaging large organic and biological molecules in a modification of field desorption microscopy (FDM). A field ion microscope (FIM) is being converted to an FDM by installation of a chevron channel tron electron multiplier array (CEMA), commonly called a chevron channel plate. The chevron CEMA has a gain of over 10{sup 7} and can thus produce enough light from single field desorbed ions to be readily photographed. In field desorption microscopy, a fine metal tip is subjected to positive electric fields high enough to field evaporate the metal as positive ions. These ions follow the field lines radially away from the tip and strike the CEMA. One therefore gets a greatly magnified image of the tip by field evaporated ions. The magnification, M equals R/{beta}r where R is the tip to screen distance, typically 5-10 cm, r is the tip radius, typically 100-1000 {angstrom} and {beta} is an electrostatic compression factor due to the field lines being Slightly compressed at the tip. Magnifications of over 10{sup 6} are easily obtained and at low temperatures, metal atoms field evaporating from adjacent lattice positions on the tip will strike the CEMA within separate areas. Therefore the resolution is less than 3 {angstrom}. A large amount of work has been done attempting to image molecules on tips by FIM and field emission microscopy (FEM). In FEM, the resolution is normally limited to about 25{angstrom} due to the large transverse momentum of the emitted electrons. The images of molecules obtained have therefore been of low resolution and hard to interpret due to effects which are still controversial in interpretation. By reversing the field and adding an imaging gas one would hope to be able to get high resolution FIM images of adsorbed molecules. It turns ...
Date: November 1, 1977
Creator: Hirsch, G. & Washburn, J.
Partner: UNT Libraries Government Documents Department

Gravity and ground magnetic surveys of the Thermo Hot Springs KGRA region, Beaver County, Utah

Description: During the period June to September 1976, gravity and ground magnetic surveys were made in the Thermo Hot Springs KGRA region which is located southwest of the town of Milford, Beaver County, Utah. The regional surveys comprised 273 new gravity and magnetic stations and incorporated 104 previous gravity stations over an area of approximately 620 km{sup 2}. The detailed surveys consisted of 9 east-west profiles in the immediate vicinity of the Thermo Hot Springs KGRA. The gravity data were reduced and are presented as terrain-corrected Bouguer gravity anomaly maps. Terrain corrections were made to a distance of 18.8 km. The regional gravity map shows the following features: (1) a large north-south trend with total relief of 5 mgal extending through the central portion of the study area; (2) an east-west trend with relief of about 7-8 mgal south of the Star Range and Shauntie Hills; (3) a north-south trend with 5 mgal relief east of Blue Mountain; and (4) a broad low of approximately 5 mgal closure southwest of the Shauntie Hills. The trends are probably caused by major faults and the gravity low is probably caused by the southern end of the Wah Wah Valley graben. The detailed gravity map indicates two possible east-west trending faults intersecting a major north-south trending fault in the immediate vicinity of the Thermo Hot Springs. The location of the hot springs appears to be fault controlled. To facilitate interpretation of the gravity data, the following processing and modeling techniques were used: (1) high-pass frequency filtering; (2) polynomial fitting; (3) second derivative; (4) strike filtering; (5) two-dimensional modeling; and (6) three-dimensional modeling. These techniques proved helpful as they more clearly delineated features of interest. The residual maps outlined an elongate north-south graben that extends through the survey area. The strike-filtered maps emphasize the major ...
Date: August 1, 1977
Creator: Sawyer, Robert F. & Cook, Kenneth L.
Partner: UNT Libraries Government Documents Department

Retrospective Case Studies

Description: This project, Retrospective Case Studies (RCS) operates directly under DGE's Resource Exploration and Assessment program. The overall objectives of this project are: (1) to improve the general and specific level of understanding of geothermal systems, and (2) to improve tools and technology for geothermal exploration and assessment.
Date: September 1, 1977
Creator: Wright, Phillip M.
Partner: UNT Libraries Government Documents Department

State-coupled direct heat program, western states

Description: DGE's objective in this project is to facilitate discovery, assessment and development of low temperature geothermal resources in the US. One strategy for reaching this objective is the initiation with selected states of cooperative programs. The objectives of these state cooperative programs are: (1) to extend the inventory of geothermal resources in the state to include the low temperature reservoirs most suitable for direct heat applications; and (2) to stimulate reservoir confirmation studies at sites with an apparent but unquantified potential for direct heat application development.
Date: September 1, 1977
Creator: Wright, Phillip M.
Partner: UNT Libraries Government Documents Department

Environmental research needs for geothermal resources development. Volume I

Description: A detailed analysis was conducted to determine the adequacy of the total research efforts regarding the potential environmental impacts related to the exploration, drilling, production, and transmission stages of vapor-dominated, liquid-dominated, geopressured, and hot-dry-rock geothermal resources. The following environmental considerations were selected and analyzed in detail: air emissions (hydrogen sulfide, ammonia, mercury, boron, radon, etc.); liquid emissions (brine, and toxic chemicals); land subsidence; seismic activity; and noise. Following the definition of the problem and the assessment of the past and ongoing research efforts, environmental research needs were then recommended based on: (1) the severity of the environmental problems as perceived by literature and contacts with the research community; (2) probability of occurrence; (3) and the research dependency for a solution to that particular problem. The recommended research needs consisted of: (1) an evaluation of the past and ongoing research efforts to ascertain gaps in knowledge for a particular pollutant, process, or control technology; (2) baseline studies of air, soil, water, and ecology around the existing geothermal facilities and in the locations scheduled for future geothermal development; (3) need for the development of appropriate models for predicting concentration and dispersion of pollutants; (4) development of predictive models for potential health and environmental effects associated with geothermal operations; and (5) development of appropriate control technology to destroy, remove or reduce harmful emissions in order to prevent the occurrence of environmental and health hazards and to comply with existing standards and criteria.
Date: April 1, 1977
Creator: Carstea, D.
Partner: UNT Libraries Government Documents Department

Chemical Characterization of Basalt Flows

Description: The ARHCO chemical data which includes trace elements, can be used to distinguish, with a high degree of confidence, between flows in the upper (and part of the middle) Yakima basalts. They also can be used to distinguish between groupings of flows in the middle Yakima basalts, and between the lower basalts and the others. The quality of the measurements, however, was not well-controlled. The atomic absorption measurements were generally useful, but contained a significant number of poor values. The quality of the neutron activation data, with the exception of the Cr values, was generally well below that which can presently be done. Almost all data was either poorly calibrated (Sc, Co, Eu,Ba), had variations in calibration over an extended group of samples (La, Sm, Th, Ta), or had poor precision (Tb). The poorly (but consistently) calibrated data were useful for the basalt characterization and in particular the Cr measurements were very useful. The gamma ray spectroscopy measurements, which determined K, U and Th abundances, were generally of poor precision and not very useful for characterization of the basalts. They were helpful, however, in evaluating K and Th data taken by other methods. The emission spectroscopy measurements, with few exceptions, were almost useless.
Date: April 1, 1977
Creator: Asaro, Frank & Michel, Helen V.
Partner: UNT Libraries Government Documents Department

Economic Study for Geothermal Steam Production of Electric Power

Description: This report presents the results of economic analyses of geothermal electric power production facilities using selected geothermal resource temperature characteristics and relates the cost of power and rate of return on investment thus obtained to those being experienced at present and as projected from nuclear and fossil-fuel generating facilities. The results are set down in a manner to permit easy economic comparison of the various options of electric power generation. It is intended that this study will be a management assist in evaluating the rate of return on invested project capital and the resulting cost of electricity generated from geothermal resources as related to existing alternative generation methods. The resulting electric energy cost is compared with the selected alternative electric generation and their costs.
Date: March 18, 1977
Partner: UNT Libraries Government Documents Department

Economic Study of Geothermal Steam Production and Power Generation

Description: This report presents the results of the study to determine the required selling price of geothermal flash steam in order for Phillips Petroleum Company to obtain a rate of return on investment of 10, 15 or 20% on its discovery in Nevada. The economic evaluations are based on an order-of-magnitude type of estimate of capital costs for the flash steam production, steam gathering and brine reinjection system to supply steam to a 55 MW (Gross) geothermal power generating plant, using mixed pressure (double flash steam) and turbine design. Geothermal well costs, brine quality and well productivity data were provided by Phillips Petroleum Company and are based on the discovery wells in Nevada. Power plant costs are based on current technology and available hardware, under construction at the present time. Costs have been escalated to 1977.
Date: February 1, 1977
Partner: UNT Libraries Government Documents Department

Geothermal Loan Guaranty Program

Description: Presently the US imports a large proportion of its petroleum requirements. This dependence on foreign petroleum has had a major impact on our economy. As a result, the Federal government is sponsoring programs to offset this foreign reliance by conservation of oil and gas, conversion of petroleum using facilities to coal and nuclear energy and the development of alternate sources of energy. One of the most acceptable alternate resources is geothermal. It offers an environmentally sound energy resource, can be developed at reasonable cost in comparison to other forms of energy and has a long term production capacity. On September 3, 1974, the Geothermal Energy Research Development and Demonstration Act was enacted to further the research, development and demonstration of geothermal energy technologies. This Act also established the Geothermal Loan Guaranty Program to assist in the financing of geothermal resource development, both electrical and non-electrical. The highlights of that Guaranty Program are detailed in this report.
Date: November 17, 1977
Partner: UNT Libraries Government Documents Department

Report on Geothermal Power Plant Cost and Comparative Cost of Geothermal and Coal Fired Steam Power Plants

Description: This report is to be used by Utah Power and Light Company (UP and L) in making studies of geothermal power plants. The dollars per kilowatt comparison between a geothermal plant and a UP and L coal-fired plant is to be developed. Geothermal gathering system costs and return to owner are to be developed for information.
Date: July 1, 1977
Partner: UNT Libraries Government Documents Department

RDT & E Plan for Marine Safety

Description: Abstract: This report presents the results of a study of future research needs in marine safety and environmental protection.
Date: May 1977
Creator: Cheaney, Edward S.; Leis, R. D. & Coyle, A. J.
Partner: UNT Libraries Government Documents Department

Design Disclosure for the Ocean Dumping Surveillance System's Dump Control Subsystem

Description: Abstract: The Coast Guard initiated a study to determine if a Dump Control Subsystem was feasible for use with an Ocean Dumping Surveillance System. This report contains a summary of the dump mechanisms on various Ocean Dumping vessels and recommended designs for Dump Control Subsystems.
Date: February 18, 1977
Creator: Weber, John E.
Partner: UNT Libraries Government Documents Department

Transfer, Installation and Flight Testing of the Modified Airborne Oil Surveillance System (AOSS II) in a HC-130B Aircraft

Description: Abstract: The prototype airborne oil surveillance system (AOSS I) developed for the U.S. Coast Guard by Aerojet ElectroSystems under Contract DOT-CG-22170A was modified and transferred from a HU-16 aircraft to a HC-130B aircraft. The added capabilities of the new system configuration were verified by a flight test program.
Date: August 1977
Creator: Meeks, D. C.; Bommarito, J. J.; Schwantje, R. S. & Edgerton, A. T.
Partner: UNT Libraries Government Documents Department

Capsizing/Swamping Accident Investigations for 1976 Season

Description: Abstract: This report summarizes the criteria for selection of those accidents to be investigated, the investigation procedures, and the accident data obtained for the 28 in depth investigations.
Date: September 1977
Creator: Bowman, J. & Smith, Betty
Partner: UNT Libraries Government Documents Department

Final report, intermediate-depth, hole No. 1-78-U1, Socorro Prospect, New Mexico

Description: During the period May 19, 1977 to July 22, 1977, fourteen heat flow boreholes were completed on the Socorro Prospect, New Mexico. Rock types encountered ranged from unconsolidated Quaternary alluvium to dense volcanic rocks. Depths of the holes were from 60 to 440 feet with an average total depth of 288 feet. Geothermal gradients from the fourteen boreholes ranged from 0.32 to 7.58 F/100 ft. Thermal conductivity values of 3.6 to 7.5 mcal/cm-sec C were obtained from a total of 76 samples of drill cuttings. Individual heat flow values range from 0.3 to 5.4 HFU (1 HFU-1 {micro}cal/cm{sup 2}-sec). The linearity of the gradients for these holes suggests that heat transport in the shallow subsurface penetrated by these boreholes is predominantly by conduction; however, the magnitude of the heat flow for eight of the boreholes indicates that they are disturbed by groundwater movement. Based on published data as well as the results of the present survey, a value of about 2.5 HFU is probably representative of the background heat flow in the area of the Socorro Prospect. The heat flow determination of 5.4 HFU in borehole No. 5-77-B20 could indicate a prospect of commercial quality. Heat flow values greater than 3 HFU require either melting within the shallow crust or convective transport of heat by water or magma. This heat flow value, therefore, supports the observation of modern uplift in the Socorro area over a postulated magma chamber situated at a depth of 11 {+-} miles. Based on the data collected during this exploration project, they recommend that a second phase program of more closely-spaced heat flow boreholes be drilled on the Socorro Prospect to determine the lateral extent of the high heat flow zone characterized by hole No. 5-77-B20.
Date: November 1, 1977
Creator: Quiett, Steve & Combs, Jim
Partner: UNT Libraries Government Documents Department

Geothermal Handbook

Description: This handbook is intended to assist the physicist, chemist, engineer, and geologist engaged in discovering and developing geothermal energy resources. This first section contains a glossary of the approximately 500 most frequently occurring geological, physical, and engineering terms, chosen from the geothermal literature. Sections 2 through 8 are fact sheets that discuss such subjects as geothermal gradients, rock classification, and geological time scales. Section 9 contains conversion tables for the physical quantities of interest for energy research in general and for geothermal research in particular.
Date: June 1, 1977
Creator: Leffel, C.S., Jr. & Eisenberg, R.A.
Partner: UNT Libraries Government Documents Department

Nuclear-Powered GPS Spacecraft Design Study

Description: This is the final report of a study to investigate the potential benefits of a nuclear (radioisotope) - powered satellite for advanced phases of the Global Positioning System (GPS) program. The critical parameters were: power to user; mean mission duration; orbital predictability; thermal control of on-board frequency standards; and vulnerability. The reference design approach is described, and input data are given for two power systems that are under development: an organic Rankine system and a Brayton cycle system. Reference design details are provided and structural design and analysis are discussed, as well as thermal design and analysis. A higher altitude version is also considered.
Date: May 1977
Creator: Raab, Bernard
Partner: UNT Libraries Government Documents Department

RIA 1-2 Experiment Specification Document

Description: The current status of Reactivity Initiated Accident (RIA) irradiated fuel behavior knowledge, based primarily on the review of the NSRR and SPERT data and the fuel rod modeling studies presented in the Experiment Requirements Document (ERD), is discussed. The hardware specifications are provided, including the test assembly and the test rods. The measurement requirements needed to meet the objectives of the test are presented. Some of the reactor operation requirements associated with the RIA 1-2 test are listed.
Date: July 1, 1977
Creator: Martinson, Z. R. & Eaton, A. M.
Partner: UNT Libraries Government Documents Department

INDEX-SUMMARIZED WIND DATA

Description: This Index provides a description of all wind summaries available at the National Climatic Center.
Date: September 1, 1977
Creator: Changery, M. J.; Hodge, W. T. & Ramsdell, J. V.
Partner: UNT Libraries Government Documents Department

Annual Report of the Wind Characteristics Program Element for the Period April 1976 Through June 1977

Description: The Wind Characteristics Program Element (WCPE) is a service element to provide meteorological information to other parts of the Wind Energy Conversion Program. In this role, the WCPE has as its general objective acceleration of the development, commercialization and utilization of reliable and economically viable wind energy conversion systems (WECS). This report discusses the work undertaken in the areas of design and performance evaluation, site selection, and presiting evaluation from April 1976 through June 1977. A systematic evaluation of wind descriptors has begun in the Design and Performance Evaluation Program Areas and is leading to the preparation of handbooks of meteorological information for use in design and performance evaluation. A conceptual framework has been established within the Site Selection Program Area that clearly defines the relationships between siting tools. The Presiting Evaluation Program Area is involved in the identification of large areas of high wind energy potential throughout the United States, and in the determination of wind characteristics related to the economic viability of wind energy conversion within these areas.
Date: July 1, 1977
Creator: Elderkin, C. E. & Ramsdell, J. V.
Partner: UNT Libraries Government Documents Department