Search Results

open access

Evaluation of the fuel-conservation potential of truck aerodynamic-drag-reduction devices

Description: A study of commercially available and prototype aerodynamic drag reduction devices which can be retrofitted onto this nation's trucks to achieve significant fuel savings by 1980 was conducted. The results of the study are presented in seven sections. An overview of the basic study results is given in the Summary Section, and a brief introduction to the general nature of the truck drag problem and the study scope is contained in Section 1. Section 2 provides a more detailed discussion of the aer… more
Date: June 30, 1976
Partner: UNT Libraries Government Documents Department
open access

Mathematical model for the preliminary analysis of dual-mode space nuclear fission solid core power and propulsion systems, NUROC3A. AMS report No. 1239a

Description: The three-volume report describes a dual-mode nuclear space power and propulsion system concept that employs an advanced solid-core nuclear fission reactor coupled via heat pipes to one of several electric power conversion systems. Such a concept could be particularly useful for missions which require both relatively high acceleration (e.g., for planetocentric maneuvers) and high performance at low acceleration (e.g., on heliocentric trajectories or for trajectory shaping). The first volume dev… more
Date: June 30, 1976
Creator: Grey, J. & Chow, S.
Partner: UNT Libraries Government Documents Department
open access

Computer code and users' guide for the preliminary analysis of dual-mode space nuclear fission solid core power and propulsion systems, NUROC3A. AMS report No. 1239b

Description: The three-volume report describes a dual-mode nuclear space power and propulsion system concept that employs an advanced solid-core nuclear fission reactor coupled via heat pipes to one of several electric power conversion systems. The second volume describes the computer code and users' guide for the preliminary analysis of the system.
Date: June 30, 1976
Creator: Nichols, R. A. & Smith, W. W.
Partner: UNT Libraries Government Documents Department
open access

Advisability of seismic scram

Description: The study assesses the value of seismic trip (scram) systems on commercial nuclear power plants. Five topics were specifically addressed: (1) the likelihood that existing instrumentation would trip the plant; (2) the consequences of spurious trips; (3) the consequences of tripping during an earthquake; (4) the advantages of a controlled shutdown; and (5) the desirability of continuing operation. A comparative risk assessment was made based on evaluation of fault trees constructed for plants wit… more
Date: June 30, 1976
Creator: Cummings, G. E.; Wells, J. E.; Lambert, H. E. & Leger-Barter, G. S.
Partner: UNT Libraries Government Documents Department
open access

Thorium utilization program. Quarterly progress report for the period ending May 31, 1976. [Fuel element crushing, solids handling, fluidized-bed combustion, aqueous separations, solvent extraction, off-gas studies, semiremote handling systems, alternative head-end processing, and fuel recycle design]

Description: The work reported includes the development of unit processes and equipment for reprocessing of High-Temperature Gas-Cooled Reactor (HTGR) fuel and the design and development of an integrated line to demonstrate the head end of HTGR reprocessing using unirradiated fuel materials. Work is also described on trade-off studies concerning the required design of recycle facilities for the large-scale recycle of HTGR fuels in order to guide the development activities for HTGR fuel recycle.
Date: June 30, 1976
Partner: UNT Libraries Government Documents Department
open access

Application of nuclear energy to agriculture. Final report

Description: The following research projects in radiation botany were conducted: mutation breeding of beans and cassava; biological response of coffee plants; and radiosensitivity of tropical plants. In the field of entomology experiments were conducted on radiosterilization of the Mediterranean fruit fly, the coffee leaf miner, the torsalo and the meliaceous shootborer. The following research projects in plant physiology were conducted: physiology of cassava plants; effects of temperature on germination of… more
Date: June 30, 1976
Creator: Moh, C. C.
Partner: UNT Libraries Government Documents Department
open access

In situ measurement of residual plutonium

Description: Nondestructive assay techniques were developed and implemented to permit the measurement of residual plutonium in glove boxes, conveyors, and tanks in areas of varying background using both gamma and neutron portable detection equipment. The gamma detector was a 2 x 2 inch sodium iodide detector collimated to view a well defined area. The neutron detector consisted of /sup 3/He tubes in a polyethylene case with a small amount of directionality. Application of the described techniques to equipme… more
Date: June 30, 1976
Creator: Kindle, C. H.
Partner: UNT Libraries Government Documents Department
open access

Effects of whole-body. gamma. -irradiation on the biosynthesis of certain serum proteins. Final report, November 29, 1967--June 30, 1976. [Rats]

Description: Whole-body exposure of rats to ionizing radiations yielded an increased incorporation of labeled amino acids into serum albumin in in vivo studies suggesting a stimulation of biosynthesis. Actually this may have been caused by an elevated hepatic transport of labeled amino acids (see below). A suppressed biosynthesis of albumin was observed when the experiments were performed in vitro using liver microsomes. Impaired biosynthesis appeared to be caused by a reduced mRNA production. Irradiation s… more
Date: June 30, 1976
Creator: Neuhaus, O. W.
Partner: UNT Libraries Government Documents Department
open access

Geothermal energy in California: Status report

Description: The potential for electric energy from geothermal resources in California is currently estimated to be equivalent to the output from 14 to 21 large (1000 MW) central station power plants. In addition, since over 30 California cities are located near potential geothermal resources, the non-electric applications of geothermal heat (industrial, agriculture, space heating, etc.) could be enormous. Therefore, the full-scale utilization of geothermal resources would have a major impact upon the energ… more
Date: June 30, 1976
Creator: Citron, O.; Davis, C.; Fredrickson, C.; Granit, R.; Kerrisk, D.; Leibowitz, L. et al.
Partner: UNT Libraries Government Documents Department
open access

Computerized mass spectrometer data system at LLL

Description: The data systems on the three mass spectrometers at LLL are computer-controlled, pulse-counting systems synchronized to a repeatedly swept magnetic field. The data are accumulated in the memory of the computer or in a Nuclear Data ND 180 in a multi-scaler mode of operation. This mode of data acquisition allows a continuous check of the background stability and makes tune-up easier. But the main benefit is a reduction in the required ion emission rate stability. By the use of standards to set th… more
Date: June 30, 1976
Creator: Friesen, R. D. & Dupzyk, R. J.
Partner: UNT Libraries Government Documents Department
open access

HTGR fuels and core development program. Quarterly progress report for the period ending May 31, 1976. [Graphite and fuels irradiation; fission product release]

Description: The work reported includes studies of reactions between core materials and coolant impurities, basic fission product transport mechanisms, core graphite development and testing, the development and testing of recyclable fuel systems, and physics and fuel management studies. Materials studies include irradiation capsule tests of both fuel and graphite. Experimental procedures and results are discussed and the data are presented in tables, graphs, and photographs.
Date: June 30, 1976
Partner: UNT Libraries Government Documents Department
open access

Seismic evaluation of critical facilities at the Lawrence Livermore Laboratory. [Evaluation of effects of severe earthquake loading]

Description: The performance of critical facilities at the Lawrence Livermore Laboratory (LLL) are being evaluated for severe earthquake loading. Facilities at Livermore, Site-300 and the Nevada Test Site are included in this study. These facilities are identified, the seismic criteria used for the analysis are indicated, the various methods used for structural analysis are discussed and a summary of the results of facilities analyzed to date are presented.
Date: June 30, 1976
Creator: Murray, R. C. & Tokarz, F. J.
Partner: UNT Libraries Government Documents Department
open access

Fast rabbit and rapid chemistry: a control system for automated chemical analysis

Description: The complete microcomputer controlled system consists of two interrelated subsystems. The first is the fast rabbit system for moving the sample in and out of the reactor at specified times and the second is the receiving station for the rapid automated chemical program for the irradiated sample and its disposal. The system allows operator interaction. (JSR)
Date: June 30, 1976
Creator: Bourret, S. C.
Partner: UNT Libraries Government Documents Department
open access

Comparison of the inelastic response of steel building frames to strong earthquake and underground nuclear explosion ground motion

Description: Analytic studies were made of the adequacy of simulating earthquake effects at the Nevada Test Site for structural testing purposes. It is concluded that underground nuclear explosion ground motion will produce inelastic behavior and damage comparable to that produced by strong earthquakes. The generally longer duration of earthquakes compared with underground nuclear explosions does not appear to significantly affect the structural behavior of the building frames considered. A comparison of ma… more
Date: June 30, 1976
Creator: Murray, R. C. & Tokarz, F. J.
Partner: UNT Libraries Government Documents Department
open access

Design techniques and measured performance for a uniformly-pumped 4-cm diameter rod amplifier

Description: A solid-state laser rod amplifier of moderate aperture achieving a high degree of spatial gain uniformity has been constructed and its performance evaluated. Digital and analogue techniques were used to optimize the amplifier design for performance in a laser fusion application. Results of simple 2-D computer simulations and experimental evaluations of amplifier performance are presented.
Date: June 30, 1976
Creator: Linford, G. J. & Yarema, S. M.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen