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254 Matching Results
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Multifoil insulation study for weight reduction. Technical information report
The purpose of the present task is to develop high temperature multi-foil insulation suitable for use in the SP-100 thermoelectric converter project. Part of this task involves careful examination of alternative foil and foil spacing materials with the goal of effecting significant weight savings over current state-of-the-art foil insulation. This task involved the determination of the state-of-the-art foils, ascertaining what data is available, what additional data is required, preliminary assessment of the suitability of alternate foil and spacer materials, and specific recommendations for additional tests required to qualify new and existing insulation designs for use in the SP-100.
Date:
January 1, 1984
Creator:
Glazer, S. D.
Object Type:
Report
System:
The UNT Digital Library
SP-100 attitude control pathfinder study. Technical information report
This report delineates the scope of Jet Propulsion Laboratory`s FY`83 effort in the attitude control area in support of the SP-100 program. Dynamic modeling of the baseline beam configuration has been conducted and is presented herein. As a first cut, the beam is treated as rigid. Its inherent flexibility is then integrated via the hybrid coordinates method. Using the resulting dynamical equations, a preliminary look at attitude control is taken. Only one axis of rotational one flexible mode are included. An alternative to the beam configuration is one that envisions connecting basebody to user via a long, lightweight, flexible tether. A literature search has been conducted in this area and the resulting bibliography is presented. The tether option is not considered viable near term. However, it offers several potentially significant advantages and thus deserves serious consideration for the next generation space power system. This report also treats attitude control constraints imposed by the high temperature and radiation environment and addresses the issue of hardware requirements and availability. Recommendations for FY`84 tasks include assembling and exercising a simulation program for the beam configuration dynamic model and conducting a technology assessment in the area of tether dynamics and control.
Date:
March 1, 1984
Creator:
Eke, F. O.; Graff, S. H.; Laskin, R. A. & Swan, P. A.
Object Type:
Report
System:
The UNT Digital Library
Technical Proposal Salton Sea Geothermal Power Pilot Plant Program
The proposed Salton Sea Geothermal Power Pilot Plant Program comprises two phases. The objective of Phase 1 is to develop the technology for power generation from high-temperature, high-salinity geothermal brines existing in the Salton Sea known geothermal resources area. Phase 1 work will result in the following: (a) Completion of a preliminary design and cost estimate for a pilot geothermal brine utilization facility. (b) Design and construction of an Area Resource Test Facility (ARTF) in which developmental geothermal utilization concepts can be tested and evaluated. Program efforts will be divided into four sub-programs; Power Generation, Mineral Extraction, Reservoir Production, and the Area Resources Test Facility. The Power Generation Subprogram will include testing of scale and corrosion control methods, and critical power cycle components; power cycle selection based on an optimization of technical, environmental and economic analyses of candidate cycles; preliminary design of a pilot geothermal-electric generating station to be constructed in Phase 2 of this program. The Mineral Extraction Subprogram will involve the following: selection of an optimum mineral recovery process; recommendation of a brine clean-up process for well injection enhancement; engineering, construction and operation of mineral recovery and brine clean-up facilities; analysis of facility operating results from environmental, economical …
Date:
March 28, 1975
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Mining Practices and Safety at the Lava Cap Gold Mining Corporation Mines, Nevada City-Grass Valley District, California
Report issued by the Bureau of Mines discussing mining safety in the Grass Valley mining district. As stated in the introduction, "the purpose of this paper is not to present an outstanding safety record but to show that gold mining can be pursued with the same degree of safety and improvement as any other industry, if and when the management recognizes that it can and must be done" (p. 1). This report includes tables, maps, illustrations, and photographs.
Date:
1941
Creator:
Ash, S. H.
Object Type:
Report
System:
The UNT Digital Library
Safety Factors in Construction and Ventilation, Wawona Vehicular Tunnel, Yosemite National Park, California
Report issued by the Bureau of Mines discussing the safety and ventilation hazards presented during the construction of the Wawona tunnel in Yosemite National Park. Safety precautions and procedures used during the construction are presented. This report includes tables, illustrations, and photographs.
Date:
1940
Creator:
Ash, S. H.
Object Type:
Report
System:
The UNT Digital Library
SP-100 planetary mission/system preliminary design study. Final report, technical information report
This report contains a discussion on many aspects of a nuclear electric propulsion planetary science mission and spacecraft using the proposed SP-100 nuclear power subsystem. A review of the science rationale for such missions is included. A summary of eleven nuclear electric propulsion planetary missions is presented. A conceptual science payload, mission design, and spacecraft design is included for the Saturn Ring Rendezvous mission. Spacecraft and mission costs have been estimated for two potential sequences of nuclear electric propulsion planetary missions. The integration issues and requirements on the proposed SP-100 power subsystems are identified.
Date:
February 1, 1986
Creator:
Jones, R. M.
Object Type:
Report
System:
The UNT Digital Library
Proceedings of the 2014 NOAA Economics of Protected Resources Workshop, September 9-11, 2014, La Jolla, California
The following document provides the results of a three-day workshop held in September of 2014 by the National Marine Fisheries Service (NMFS). This workshop was the first NMFS workshop focused exclusively on the economics of PR. The primary goal was to initiate the process of identifying national PR social science research needs and best practices.
Date:
September 2015
Creator:
Bisack, Kathryn D.; Squires, Dale E.; Lipton, Douglas W.; Hilger, James R.; Holland, Daniel S.; Johnson, Denise H. et al.
Object Type:
Report
System:
The UNT Digital Library
U.S. Pacific Marine Mammal Stock Assessment: 2012
This is an assessment report based on the population of marine mammals along the Pacific coastline in the year 2012. It is a working document that will continue to be updated as data changes.
Date:
January 2013
Creator:
Carretta, James V.; Oleson, Erin; Weller, David W.; Lang, Aimee R.; Forney, Karin A.; Baker, Jason et al.
Object Type:
Report
System:
The UNT Digital Library
U.S. Pacific Marine Mammal Stock Assessments: 2011
This is an assessment report on the population of marine mammals along the U.S. Pacific coastline. These reports are ever-growing and subject to change annually.
Date:
December 15, 2011
Creator:
Caretta, James V.; Forney, Karin A.; Oleson, Erin; Martien, Karen; Muto, Marcia M.; Lowry, Mark S. et al.
Object Type:
Report
System:
The UNT Digital Library
Guadalupe River and Bypass Culvert, San Jose, California: Hydraulic Model Investigation
From abstract: The ultimate goal of numerous experiments is to develop the desired flow split for the design discharge of 14,600 cfs while maintaining acceptable water-surface elevations in the upstream channel.
Date:
February 1998
Creator:
Hite, John E., Jr.
Object Type:
Report
System:
The UNT Digital Library
Changing Oceans and Changing Fisheries: Environmental Data for Fisheries Research and Management
The following report is the proceedings of a workshop convened at NOAA's Pacific Fisheries Environmental Group in Pacific Grove, California, on July 16-18 1996, to examine the uses of environmental data for fisheries.
Date:
April 1997
Creator:
Boehlert, George W. & Schumacher, James D.
Object Type:
Report
System:
The UNT Digital Library
Navy - Air War Center, Technical Centers and Labs, China Lake, CA - Data Call (Part 1 of 2) June 15, 1994
Navy - Air War Center, Technical Centers and Labs, China Lake, CA - Data Call (Part 1 of 2) June 15, 1994. Box 175, L-107.
Date:
unknown
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Navy - Air War Center, Technical Centers and Labs, China Lake, CA - Data Call (Part 2 of 2) June 15, 1994
Navy - Air War Center, Technical Centers and Labs, China Lake, CA - Data Call (Part 2 of 2) June 15, 1994. Box 175, L-107.
Date:
unknown
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Isabella Dam Spillway, Kern River, California: Hydraulic Model Investigation
Abstract: "Tests were conducted on a 1:50-scale model of Isabella Dam Spillway to determine the adequacy of proposed spillway, dam, and channel improvements. The model reproduced an area of the reservoir 800 ft wide by 1,100 ft long, the spillway, and the entire length of the exit channel. Unsatisfactory flow conditions were observed in the vicinity of the spillway crest due to approach conditions to the spillway. Large cross waves, present in the exit channel just downstream of the spillway, resulted in occasional overtopping of the right wall. A grouted rock dike that provided satisfactory flow conditions at the spillway and downstream throughout the exit channel was placed adjacent to the existing spillway approach wall."
Date:
August 1987
Creator:
Davis, W. G.
Object Type:
Report
System:
The UNT Digital Library
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
Arguello Area (ARMS-II)
"An Aerial Radiographic Measuring Survey (ARMS) of the Arguello area was made for the Civil Effects Test Operations, Division of Biology and Medicine, U.S. Atomic Energy Commission, by Edgerton, Germeshausen & Grier, Inc.(EG&G), between Apr. 5 and Apr. 29, 1962. The survey was part of a nationwide program to measure the present environmental levels of gamma radiation" (p. 5).
Date:
May 1965
Creator:
Guillou, R. B.
Object Type:
Report
System:
The UNT Digital Library
HYBRID VEHICLE POTENTIAL ASSESSMENT. Volume 9: Power Train Summary, Component Descriptions, and HYVEC Vehicle Simulator
None
Date:
September 30, 1979
Creator:
Liddle, S. G. & DeGrey, S. P.
Object Type:
Report
System:
The UNT Digital Library
State Input – Regional Hearing, Los Angeles, Presentation to the BRAC
State Input – Regional Hearing, Los Angeles, Presentation to the BRAC : Engineer, Technical, Ancillary, and Operational Support Services Contract in Support of Naval Surface Warfare Center, Corona Division; CA Joint Warfare Assessment Laboratory Data Sheet
Date:
July 26, 2005
Creator:
unknown
Object Type:
Legal Document
System:
The UNT Digital Library
Condition Survey: Beale Air Force Base, California
The purpose of this report is to present the results of a condition survey performed at Beale Air Force Base (BAFB), California, during 4-7 November 1972. The two major areas of interest considered in this condition survey were the structural condition of the primary airfield pavements and the condition of pavement repairs and the types of maintenance materials that have been used at this airfield.
Date:
April 1973
Creator:
Vedros, Philip J.
Object Type:
Report
System:
The UNT Digital Library
Conservation assessment for the Siskiyou Mountains salamander and Scott Bar salamander in northern California.
The purpose of this conservation assessment is to summarize existing knowledge regarding the biology and ecology of the Siskiyou Mountains salamander and Scott Bar salamander, identify threats to the two species, and identify conservation considerations to aid federal management for persistence of the species. The conservation assessment will serve as the basis for a conservation strategy for the species.
Date:
October 20, 2006
Creator:
Vinikour, W. S.; LaGory, K. E.; Adduci, J. J. & Division, Environmental Science
Object Type:
Report
System:
The UNT Digital Library
Data Call - Naval Command, Control and Ocean Surveillance Center, Research Development Test Evaluation Division - San Diego, CA
Data Call - Naval Command, Control and Ocean Surveillance Center, Research Development Test Evaluation Division - San Diego, CA. Data Call #5 Technical Centers. Box 186, L-118.
Date:
unknown
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Low-cost silicon solar array project. First annual report, January 1975--March 1976
The Low-Cost Silicon Solar Array Project (LSSA) was established to greatly reduce the price of solar arrays by the improvement of manufacturing technology, by adaptation of mass production techniques, and by helping achievement of user acceptance. The Project's approach includes the development of technology, its transfer by industry to commercial practice, the evaluation of the economics involved, and the stimulation of market growth. The activities and progress of the LSSA Project during its first year are described in this document which covers all Project activities, with primary emphasis on the technical plans and accomplishments. The development of manufacturing technology is now and will continue to be performed principally by industries and universities. To date, 24 contractors are working on new silicon-refinement processes, silicon-sheet-growth techniques, encapsulants, and automated-assembly studies. Nine more contractors have been selected to perform additional technology investigations and their contracts are being negotiated. Additional contracts will be issued in the future as promising ideas appear. (WDM)
Date:
August 9, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Condition Survey: March Air Force Base, California
"The purpose of this report is to present the results of a condition survey performed at March Air Force Base (MAFB), California, during 30 November-6 December 1972. The two major areas of interest considered in this condition survey were the structural condition of the primary airfield pavements and the condition of pavement repairs and the types of maintenance materials that have been used at this airfield" (p. 1).
Date:
May 1973
Creator:
Jackson, Ralph D.
Object Type:
Report
System:
The UNT Digital Library
Report on Applicability of Residential Ventilation Standards in California
The California Energy Commission is considering updating its requirements for residential ventilation in the next round of its energy code, known as ''Title 24''. This report contains recommendations for potential changes to the code. These recommendations must be further developed into specific wording before they can be formally considered. Residential ventilation standards always address local and whole-house ventilation rates and some basic source control requirements, but there are many interactions with building systems that must also be considered. McKone and Sherman [8] laid out a set of additional issues that should be addressed before any specific changes to the code should be made. Those key issues included the following: Adventitious Air Flow; Air Distribution; Filtration and Air Cleaning; Occupant Acceptability and Control; Outdoor Air; Peak Demand; Unusual Sources and High-Polluting Events; and Window Operation. McWilliams and Sherman reviewed the literature on residential ventilation and in particular these key issues. They also reviewed codes, standards and guidelines relevant to residential ventilation. That literature serves as the technical basis for this report.
Date:
June 1, 2005
Creator:
Sherman, Max H. & McWilliam, Jennifer A.
Object Type:
Report
System:
The UNT Digital Library