Artificial Recharge in the Northern Part of Chino Ground-Water Basin, Upper Santa Ana Valley, California (open access)

Artificial Recharge in the Northern Part of Chino Ground-Water Basin, Upper Santa Ana Valley, California

Purpose and Scope: The purpose of this study was to evaluate the geohydrologic characteristics that influence sustained artificial recharge and to determine long-term infiltration rates in the northern part of Chino ground-water basin. Results of this study will help management to design and implement a recharge-recapture system in Chino Basin. Nine test holes were drilled, long-term infiltration tests were made, and drillers' logs and water-level data were evaluated to determine the probable effects of recharging the ground-water basin. The study was concentrated in the northern part of Chino Basin, where recharge is proposed.
Date: June 1983
Creator: Koehler, J. H.
Object Type: Report
System: The UNT Digital Library
Assessment of advanced coal-gasification processes. [AVCO high throughput gasification in process; Bell High Mass Flux process; CS-R process; and Exxon Gasification process] (open access)

Assessment of advanced coal-gasification processes. [AVCO high throughput gasification in process; Bell High Mass Flux process; CS-R process; and Exxon Gasification process]

This report represents a technical assessment of the following advanced coal gasification processes: AVCO High Throughput Gasification (HTG) Process, Bell Single - Stage High Mass Flux (HMF) Process, Cities Service/Rockwell (CS/R) Hydrogasification Process, and the Exxon Catalytic Coal Gasification (CCG) Process. Each process is evaluated for its potential to produce SNG from a bituminous coal. In addition to identifying the new technology these processes represent, key similarities/differences, strengths/weaknesses, and potential improvements to each process are identified. The AVCO HTG and the Bell HMF gasifiers share similarities with respect to: short residence time (SRT), high throughput rate, slagging and syngas as the initial raw product gas. The CS/R Hydrogasifier is also SRT but is non-slagging and produces a raw gas high in methane content. The Exxon CCG gasifier is a long residence time, catalytic fluidbed reactor producing all of the raw product methane in the gasifier.
Date: June 1, 1981
Creator: McCarthy, J.; Ferrall, J.; Charng, T. & Houseman, J.
Object Type: Report
System: The UNT Digital Library
Civilian and military missions SP-100 preliminary user requirements (open access)

Civilian and military missions SP-100 preliminary user requirements

This document defines the top level requirements of potential users of a space based nuclear electric power supply. This provides the SP-100 Project and information required to design the modular (10-1000 KWe) space power systems to meet the needs of most potential users.
Date: June 29, 1987
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Coastal Cliff Sediments, San Diego Region, Dana Point to the Mexican Border (open access)

Coastal Cliff Sediments, San Diego Region, Dana Point to the Mexican Border

From Summary: This study documents the temporally episodic cliff and bluff erosion occurs; namely, at San Onofre State Park, Camp Joseph Pendleton Marine Reservation, and Torrey Pines City and State Parks.
Date: June 1987
Creator: Inman, D.
Object Type: Report
System: The UNT Digital Library
Energy conservation in citrus processing. Technical progress report, October 1, 1979-March 31, 1980 (open access)

Energy conservation in citrus processing. Technical progress report, October 1, 1979-March 31, 1980

The Sunkist Citrus Plant in Ontario, California, processes about 6 million pounds of citrus fruit per day to make products which include frozen concentrated juice; chilled, pasteurized, natural strength juice; molasses from peel; dried meal from peel; pectin; citrus oil; and bioflavonoids. The energy intensive operations at the plant include concentration, drying, and refrigeration. The objective of the two-year two-phase project is to identify an economically viable alternative to the existing method of meeting energy requirements. Progress on the technical work of Phase I is reported. The following are summarized: requirements (energy price projection, atmospheric emission requirements, citrus juice quality constraints, economic evaluations); characterization (basic citrus processing operations, energy consumption and fruit processed vs time, identification and measurement of energy uses, energy balance for a typical citrus juice evaporator); and thermodynamic analysis (heat pump model, thermal evaporator, and co-generation model).
Date: June 15, 1980
Creator: unknown
Object Type: Report
System: The UNT Digital Library
A Geologic Summary of the Owens Valley Drilling Project, Owens and Rose Valleys, Inyo County, California (open access)

A Geologic Summary of the Owens Valley Drilling Project, Owens and Rose Valleys, Inyo County, California

A report discussing the Owens Valley Drilling project, with the goal of obtaining subsurface data relevant to the Coso Formation that would permit more reliable estimates of the uranium resources potential of the project and adjacent areas.
Date: June 1981
Creator: Schaer, Davis W.
Object Type: Report
System: The UNT Digital Library

[A Geologic Summary of the Owens Valley Drilling Project, Owens and Rose Valleys, Inyo County, California. Appendix A: Petrographic Data]

The following slides contain petrographic photos from the Owens Valley drilling project.
Date: June 1981
Creator: Schaer, Davis W.
Object Type: Photograph
System: The UNT Digital Library
Mission Bay Harbor, California, Design for Wave and Surge Protection and Flood Control: Hydraulic Model Investigation (open access)

Mission Bay Harbor, California, Design for Wave and Surge Protection and Flood Control: Hydraulic Model Investigation

Partial abstract: A 1:100-scale (undistorted) hydraulic model, reproducing Mission Bay Harbor, approximately 3 miles of shoreline, and sufficient offshore area to permit generation of the required test waves, was used to investigate the arrangement and design of proposed structures for (a) improving hazardous entrance conditions, (b) reducing surge inside the harbor, and (c) eliminating potential flood hazards. The original proposal for harbor improvement consisted of a 2,200-ft-long offshore breakwater. The proposed structures for river flood control consisted of (a) a 1,200-ft-long weir in the middle jetty, (b) various south jetty extensions, and (c) diversion dikes on the middle jetty.
Date: June 1983
Creator: Curren, Charles R.
Object Type: Report
System: The UNT Digital Library
National Uranium Resource Evaluation: Klamath Falls Quadrangle, Oregon and California (open access)

National Uranium Resource Evaluation: Klamath Falls Quadrangle, Oregon and California

From Introduction: "The Klamath Falls Quadrangle, in south-central Oregon between lat 42º and 43º N. and long 120º and 122º W. (Fig. 1), was evaluated to identify geologic environments and delineate areas with characteristics favorable for the occurrence of uranium deposits."
Date: June 1982
Creator: Castor, Stephen B.; Berry, M. R. & Robins, Jerold W.
Object Type: Report
System: The UNT Digital Library

National Uranium Resource Evaluation: Klamath Falls Quadrangle, Oregon and California, Appendix A-E

Appendices containing survey data of the Klamath Falls Quadrangle in Oregon for uranium availability to accompany a report on U.S uranium resources in Oregon.
Date: June 1982
Creator: Castor, Stephen B.; Berry, M. R. & Robins, Jerold W.
Object Type: Dataset
System: The UNT Digital Library
National Uranium Resource Evaluation: Trona Quadrangle, California (open access)

National Uranium Resource Evaluation: Trona Quadrangle, California

From Purpose and Scope: "The Trona Quadrangle in the southeastern desert of California (Fig. 1) was evaluated to identify and delineate areas and geologic units that exhibit characteristics favorable for the occurrence of uranium deposits. It consisted of three phases: Phase I (6.0 man-months) encompassed literature review, preliminary map preparation, and preparation of a work plan. Phase II (23.4 man-months) consisted of fieldwork and data gathering. Phase III (5.1 man-months) concerned data evaluation and completion of this report."
Date: June 1982
Creator: Bushnell, Marjorie M. & Morton, Paul K.
Object Type: Report
System: The UNT Digital Library

National Uranium Resource Evaluation: Trona Quadrangle, California, Appendix A-D

Appendix containing data on uranium availability in the Trona Quadrangle to accompany a report on U.S. uranium resources in California.
Date: June 1982
Creator: Bushnell, Marjorie M. & Morton, Paul K.
Object Type: Dataset
System: The UNT Digital Library
PEGASUS: a multi-megawatt nuclear electric propulsion system (open access)

PEGASUS: a multi-megawatt nuclear electric propulsion system

With the Space Transportation System (STS), the advent of space station Columbus and the development of expertise at working in space that this will entail, the gateway is open to the final frontier. The exploration of this frontier is possible with state-of-the-art hydrogen/oxygen propulsion but would be greatly enhanced by the higher specific impulse of electric propulsion. This paper presents a concept that uses a multi-megawatt nuclear power plant to drive an electric propulsion system. The concept has been named PEGASUS, PowEr GenerAting System for Use in Space, and is intended as a ''work horse'' for general space transportation needs, both long- and short-haul missions. The recent efforts of the SP-100 program indicate that a power system capable of producing upwards of 1 megawatt of electric power should be available in the next decade. Additionally, efforts in other areas indicate that a power system with a constant power capability an order of magnitude greater could be available near the turn of the century. With the advances expected in megawatt-class space power systems, the high specific impulse propulsion systems must be reconsidered as potential propulsion systems. The power system is capable of meeting both the propulsion system and spacecraft power requirements.
Date: June 1, 1985
Creator: Coomes, Edmund P.; Cuta, Judith M.; Webb, Brent J. & King, David Q.
Object Type: Article
System: The UNT Digital Library
Transport vehicle for manned Mars missions powered by inertial confinement fusion (open access)

Transport vehicle for manned Mars missions powered by inertial confinement fusion

Inertial confinement fusion (ICF) is an ideal engine power source for manned spacecraft to Mars because of its inherently high power-to-mass ratios and high specific impulses. We have produced a concept for a vehicle powered by ICF and utilizing a magnetic thrust chamber to avoid plasma thermalization with wall structures and the resultant degradation of specific impulse that are unavoidable with the use of mechanical thrust chambers. This vehicle is capable of 100-day manned Mars missions with a 100-metric-ton payload and a total vehicle launch mass near 6000 metric tons, based on advanced technology assumed to be available by A.D. 2020. Such short-duration missions minimize radiation exposures and physiological deterioration of astronauts.
Date: June 26, 1987
Creator: Orth, C.D.; Klein, G.; Sercel, J.; Hoffman, N.; Murray, K. & Chang-Diaz, F.
Object Type: Article
System: The UNT Digital Library