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  Partner: UNT Libraries Government Documents Department
 Decade: 1980-1989
 Language: English
 Collection: Technical Report Archive and Image Library
Ecology and Biology of the Pacific Walrus, Odobenus Rosmarus Divergens Illiger

Ecology and Biology of the Pacific Walrus, Odobenus Rosmarus Divergens Illiger

Date: 1982
Creator: Fay, Francis H.
Description: Pacific walrus is summarized, including distribution and migrations by month, general morphology and growth, skin and hair, dentition, food and feeding behavior, reproduction, morbidity and mortality, and population.
Contributing Partner: UNT Libraries Government Documents Department
Mammals of the La Selva-Braulio Carrillo Complex, Costa Rica

Mammals of the La Selva-Braulio Carrillo Complex, Costa Rica

Date: December 1989
Creator: Timm, Robert M.
Description: Summary of 142 species of mammals of Costa Rica, including geographical distribution, subspecies, last documented sighting in Costa Rica, and origin of specimen examined for each species.
Contributing Partner: UNT Libraries Government Documents Department
Birds of the St. Croix River Valley: Minnesota and Wisconsin

Birds of the St. Croix River Valley: Minnesota and Wisconsin

Date: 1981
Creator: Faanes, Craig A.
Description: Summary of the birds of the St. Croix River Valley, including descriptions of each species' migration status and times of year, nesting season distribution, and habitat.
Contributing Partner: UNT Libraries Government Documents Department
ANL/HTP: A Computer Code for the Simulation of Heat Pipe Operation

ANL/HTP: A Computer Code for the Simulation of Heat Pipe Operation

Date: November 1983
Creator: McLennan, G. A.
Description: ANL/HTP is a computer code for the simulation of heat pipe operation, to predict heat pipe performance and temperature distributions during steady state operation. Source and sink temperatures and heat transfer coefficients can be set as input boundary conditions, and varied for parametric studies. Five code options are included to calculate performance for fixed operating conditions, or to vary any one of the four boundary conditions to determine the heat pipe limited performance. The performance limits included are viscous, sonic, entrainment capillary, and boiling, using the best available theories to model these effects. The code has built-in models for a number of wick configurations - open grooves, screen-covered grooves, screen-wrap, and arteries, with provision for expansion. The current version of the code includes the thermophysical properties of sodium as the working fluid in an expandable subroutine. The code-calculated performance agrees quite well with measured experiment data.
Contributing Partner: UNT Libraries Government Documents Department
Analysis of Cracked Core Spray Injection Line Piping from the Quad Cities Units 1 and 2 Boiling Water Reactors

Analysis of Cracked Core Spray Injection Line Piping from the Quad Cities Units 1 and 2 Boiling Water Reactors

Date: December 1983
Creator: Diercks, D. R.
Description: Elbow assemblies and adjacent piping from the loops A and B core spray injection lines of Quad Cities Units 1 and 2 Boiling Water Reactors have been examined in order to determine the nature and causes of coolant leakages and flaw indications detected during hydrostatic tests and subsequent ultrasonic inspections. The elbow assemblies were found to contain multiple intergranular cracks in the weld heat-affected zones. The cracking was predominantly axial in orientation in the forged elbow and wedge components, whereas mixed axial and circumferential cracking was seen in the wrought piping pieces. In at least two instances, axial cracks completely penetrated the circumferential weld joining adjacent components. Based upon the observations made in the present study, the failures were attributed to intergranular stress corrosion cracking caused by the weld-induced sensitized microstructure and residual stresses present; dissolved oxygen in the reactor coolant apparently served as the corrosive species. The predominantly axial orientation of the cracks present in the forged components is believed to be related to the banded microstructure present in these components. The metallographic studies reported are supplemented by x-radiography, chemical analysis and mechanical test results, determinations of the degree of sensitization present, and measurements of weld metal delta ferrite ...
Contributing Partner: UNT Libraries Government Documents Department
Waste Heat Recovery Fluids for Heavy-Duty Transportation Bottoming Cycle Systems : A Summary Report

Waste Heat Recovery Fluids for Heavy-Duty Transportation Bottoming Cycle Systems : A Summary Report

Date: September 1983
Creator: Krazinski, J. L.; Uherka, K. L.; Holtz, Robert E. & Ash, J. E.
Description: Working fluids used in Rankine bottoming cycle systems for heat recovery from long-haul trucks, marine vessels, and railroad locomotives are examined. Rankine bottoming cycle systems improve fuel economy by converting the exhaust heat from the prime mover into useful power. The report assesses fluid property requirements on the basis of previous experience with bottoming cycle systems. Also, the exhaust gas characteristics for the transportation modes of interest are summarized and compared. Candidate working fluids are discussed with respect to their potential for use in Rankine bottoming cycle systems. Analytical techniques are presented for calculating the thermodynamic properties of single-component working fluids. The resulting equations have been incorporated into a computer code for predicting the performance of Rankine bottoming cycle systems. In evaluating candidate working fluids, the code requires the user to input only a minimal amount of fluid property data.
Contributing Partner: UNT Libraries Government Documents Department
An Approach to Programming Multiprocessing Algorithms on the Denelcor HEP

An Approach to Programming Multiprocessing Algorithms on the Denelcor HEP

Date: December 1983
Creator: Lusk, Ewing L. & Overbeek, Ross A.
Description: In the process of learning how to write code for the Denelcor HEP, we have developed an approach that others may well find useful. We believe that the basic synchronization primitives of the HEP (i.e., asynchronous variables), along with the prototypical patterns for their use given in the HEP FORTRAN 77 User's Guide, form too low-level a conceptual basis for the formulation of multiprocessing algorithms. We advocate the use of monitors, which can be easily implemented using the HEP primitives. Attempts to solve substantial problems without introducing higher-level constructs such as monitors can produce code that is unreliable, unintelligible, and restricted to the specific dialect of FORTRAN currently supported on the HEP. Our experience leads us to believe that solutions which are both clear and efficient can be formulated using monitors.
Contributing Partner: UNT Libraries Government Documents Department
Fuel Cycle Programs, Quarterly Progress Report: July-September 1978

Fuel Cycle Programs, Quarterly Progress Report: July-September 1978

Date: January 1980
Creator: Steindler, M. J.; Ader, M.; Bernstein, G.; Flynn, K.; Gerding, T.; Jardine, L. J. et al.
Description: Quarterly report of the Argonne National Laboratory Chemical Engineering Division regarding activities related to properties and handling of radioactive materials, operation of nuclear reactors, and other relevant research. Fuel cycle work reported for this period includes testing of hydraulic performance and extraction efficiency of eight-stage centrifugal contactors, testing of a flowsheet for the Aralex process, evaluation of ruthenium and zirconium extraction in a miniature centrifugal contactor, study of zirconium aging in the organic phase and its effect on zirconium extraction and hydraulic testing of the 9-cm-ID contactor.
Contributing Partner: UNT Libraries Government Documents Department
The Influence of Dissolved Organic Substances in Groundwater on Sorption Behavior of Americium and Neptunium

The Influence of Dissolved Organic Substances in Groundwater on Sorption Behavior of Americium and Neptunium

Date: January 1984
Creator: Boggs, Sam & Seitz, M.
Description: Report discussing the results of experiments to determine whether disssolved organic substances can enhance the tranport of radionuclides through the groundwater system.
Contributing Partner: UNT Libraries Government Documents Department
Fully-Coupled Solution of Pressure-Linked Fluid-Flow Equations

Fully-Coupled Solution of Pressure-Linked Fluid-Flow Equations

Date: August 1983
Creator: Vanka, S. P. & Leaf, G. K.
Description: A robust and efficient numerical scheme has been developed for the solution of the finite-differenced pressure linked fluid flow equations. The algorithm solves the set of nonlinear simultaneous equations by a combination of Newton's method and efficient sparse matrix techniques. In tests on typical recirculating flows the method is rapidly convergent. The method does not require any under-relaxation or other convergence-enhancing techniques employed in iterative schemes. It is currently described for two-dimensional steady state flows but is extendible to three dimensions and mildly time-varying flows. The method is robust to changes in Reynolds number, grid aspect ratio, and mesh size. This paper reports the algorithm and the results of calculations performed.
Contributing Partner: UNT Libraries Government Documents Department
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