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Theoretical Studies of the Atmospheric Triatomic Molecules H₂O, N₂O, NO₂, CO₂, O₃, and their Ions

Description: Definitive location of excited energy levels and the delineation of reaction mechanisms were provided by ab initio calculations of the triatomic atmospheric molecules and their ions. Linear geometry to bent geometry correlation diagrams were also determined. These provide simple ways of predicting reaction possibilities. Potential energy surfaces were computed for the ground ²B₁ and ²B₂ states of H2O⁺. Previous theoretical spectra of carbon dioxide were shown to be of limited accuracy and there… more
Date: 1977?
Creator: Wahl, Arnold C.; England, Walter B.; Rosenberg, Bruce J.; Hopper, Darrel G. & Fortune, Patrick J.
Item Type: Refine your search to only Report
open access

Occurrence of Critical Heat Flux During Blowdown with Flow Reversal

Description: A small-scale experiment using Freon-11 at 130 degrees F (54.4 degrees C) and 65 psia (0.45 MPa) in a well-instrumented, transparent annular test section was used to study the occurrence of critical heat flux (CHF) during blow-down with flow reversal. The inner stainless steel tube of the annulus was uniformly heated over its 61-cm length. Inlet and exit void fractions were measured by a capacitance technique. Flow-regime transition was observed with high-speed photography. A 1-hr contact time… more
Date: January 1977
Creator: Leung, J. C. M.
Item Type: Refine your search to only Report
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Materials Science Division Coal Technology Quarterly Report: October-December 1976

Description: Quarterly report of the Argonne National Laboratory Materials Science Division regarding coal technology research and development. This report discusses a project for the economical conversion of coal into cleaner and more usable fuels: evaluation of ceramic-refractories exposed to abrasion-corrosion caused by coal slag, evaluation of ceramic coatings and refractories exposed to erosive environments, development of nondestructive evaluation methods applicable to coal-conversion systems, develo… more
Date: 1977?
Creator: Argonne National Laboratory
Item Type: Refine your search to only Report
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Coal Liquefaction Support Studies

Description: A development program is being carried out to obtain information applicable to the SYNTHOIL process for converting coal to liquid fuel of low sulfur content. This report presents information on (1) the design of a calorimeter to measure heat of reaction of hydrogen with coal slurries, (2) the design of apparatus and calculations for measuring coefficients of heat transfer from SYNTHOIL process feed and effluent products to process vessel walls, (3) tests on the use of additives to facilitate th… more
Date: 1977?
Creator: Fischer, J.; Bump, T. R.; Mulcahey, T. P.; Jonke, A. A.; Lo, R.; Nandi, S. et al.
Item Type: Refine your search to only Report
open access

Weight Losses of Marble and Limestone Briquettes Exposed to Outdoor Environments in the Eastern United States : Results of Exposures, 1984-1988

Description: Gravimetric changes in marble and limestone briquettes exposed to outdoor environment at five sites in the eastern United States have been monitored since 1984. An earlier report describes procedures and results obtained in 1984--1988. This report presents the results of the exposure period 1984--1988 and reviews and summarizes those of prior years. A linear relationship was found between cumulative gravimetric losses and exposure period or rain depth. These losses resulted in an average recess… more
Date: September 1991
Creator: Reimann, K. J.
Item Type: Refine your search to only Report
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Practical Superconductor Development for Electrical Power Applications Semiannual Report: October 1989-June 1990

Description: Progress report for the superconductor program at Argonne National Laboratory discussing the group's activities and research. This report describes technical progress of research and development efforts aimed at producing superconducting components based on the Y-Ba-Cu, Bi-Sr-Ca-Cu, and Tl-Ba-Ca-Cu oxide systems.
Date: June 1990
Creator: Argonne National Laboratory. Materials and Components Technology Division.
Item Type: Refine your search to only Report
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Nuclear Magnetic Resonance Imaging of Green-State Ceramics

Description: Proton (¹H) nuclear magnetic resonance (NMR) imaging techniques are investigated as a means to nondestructively characterize green-state (unfired) Si{sub 3}N{sub 4} ceramic components. Spectroscopic results indicate that the organic additives used in the injection molding of ceramics behave as soft solids, with broad spectral peak widths (T₂ <0.5 ms) and moderate multicomponent spin-lattice relaxation rates (T{sub 1} ranging from 11 ms to 1 s). Because of the intrinsically different spectral ch… more
Date: August 1990
Creator: Gopalsami, Nachappa; Dieckman, S. L.; Ellingson, W. A.; Botto, Robert E.; Wong, P. S.; Yeh, H. C. et al.
Item Type: Refine your search to only Report
open access

Theory Institute in Automated Reasoning : Held at Argonne National Laboratory, August 6-10, 1990

Description: On August 6--10, 1990, Argonne National Laboratory hosted a Theory Institute in Automated Reasoning. The institute was organized by the Mathematics and Computer Science Division and was supported by special funding from Argonne's Physical Research Program Administration. The focus of the Institute was on the obstacles confronting the effective automation of reasoning. The objective was to lay the groundwork for formulating a theory governing the interrelationship of representation, inference ru… more
Date: August 1990
Creator: Wos, Larry
Item Type: Refine your search to only Report
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Guidelines to Achieve Seals with Minimal Leak Rates for HWR-NPR Coolant System Components

Description: Existing technology for seal systems was reviewed with regard to flange, elastomer, valve, and pump design. A technology data base for the designers of the HWR-NPR coolant system was derived from operating experience and seal development work on reactors in the United States, Canada, and Europe. This data base was then used to generate guidelines for the design of seals and/or joints for the HWR-NPR coolant system. Also discussed are needed additional research and development, as well as the ne… more
Date: March 1991
Creator: Finn, P. A.
Item Type: Refine your search to only Report
open access

A Tutorial on the Construction of High-Performance Resolution/Paramodulation Systems

Description: Over the past 25 years, researchers have written numerous deduction systems based on resolution and paramodulation. Of these systems, a very few have been capable of generating and maintaining a formula database "containing more than just a few thousand clauses. These few systems were used to explore mechanisms for rapidly extracting limited subsets of relevant" clauses. We have written this tutorial to reflect some of the best ideas that have emerged and to cast them in a form that makes them … more
Date: September 1990
Creator: Butler, R. & Overbeek, R.
Item Type: Refine your search to only Report
open access

A Portable Generic Elementary Function Package in Ada and an Accurate Test Suite

Description: A comprehensive set of elementary functions has been implemented portably in Ada. The high accuracy of the implementation has been confirmed by rigorous analysis. Moreover, we present new test methods that are efficient and offer a high resolution of 0.005 unit in the last place. These test methods have been implemented portably here and confirm the accuracy of our implemented functions. Reports on the accuracy of other function libraries obtained by our test programs are also presented.
Date: November 1990
Creator: Tang, Ping Tak Peter
Item Type: Refine your search to only Report
open access

Test and Evaluation of the Argonne BPAC10 Series Air Chamber Calorimeter Designed for 20 Minute Measurements

Description: This paper is the final report on DOE-OSS Task ANLE88002 Fast Air Chamber Calorimetry.'' The task objective was to design, construct, and test an isothermal air chamber calorimeter for plutonium assay of bulk samples that would meet the following requirements for sample power measurement: average sample measurement time less than 20 minutes. Measurement of samples with power output up to 10 W. Precision of better than 1% RSD for sample power greater than 1 W. Precision better than 0.010 watt SD… more
Date: October 1990
Creator: Perry, Ronald B.; Fiarman, Sidney; Jung, Erwin A. & Cremers, Teresa
Item Type: Refine your search to only Report
open access

Materials Evaluation and Inspection : New Methods, Materials and Dimensions, Proceedings of the Conference Held at Argonne National Laboratory, September 25-26, 1989

Description: A conference at Argonne National Laboratory for executives and technical personnel in small and medium-size manufacturing companies summarized how materials evaluation and inspection by nondestructive methods are changing and broadening. The application of these rapidly emerging techniques in maintaining and improving the quality and competitiveness of manufactured products was stressed. Individual papers have been cataloged separately.
Date: November 1990
Creator: Nevitt, Michael V. & Peterson, Norman D.
Item Type: Refine your search to only Report
open access

A Theory for Fluidelastic Instability of Tube-Support-Plate Inactive Modes

Description: Fluid-elastic instability of loosely supported tubes, vibrating in a tube-support-plate (TSP) inactive mode, is suspected to be one of the main causes of tube failure in some operating steam generators and heat exchangers. This report presents a mathematical model for fluid-elastic instability of loosely supported tubes exposed to non-uniform cross-flow. The model incorporates all motion-dependent fluid forces based on the unsteady flow theory. In the unstable region associated with a TSP-inact… more
Date: September 1990
Creator: Cai, Y.; Chen, Shoei-Sheng & Chandra, S.
Item Type: Refine your search to only Report
open access

Rationale for the Proposed Standard for a Generic Package of Primitive Functions for Ada

Description: This paper supplements the Proposed Standard for a Generic Package of Primitive Functions for Ada, '' written by the ISO- IEC/JTC1/SC22/WG9 (Ada) Numerics Rapporteur Group. Based on recommendations made jointly by the ACM SIGAda Numerics Working Group and the Ada-Europe Numerics Working Group, the proposed primitive functions standard is the second of several anticipated secondary standards to address the interrelated issues of portability, efficiency, and robustness of numerical software writt… more
Date: December 1990
Creator: Dritz, Kenneth W.
Item Type: Refine your search to only Report
open access

Formal System Specifications : a Case Study of Three Diverse Representations

Description: The only effective way to raise the confidence level of a program significantly is to give a convincing proof of its correctness. But one should not first make the program and then prove its correctness, because then the requirement of providing the proof would only increase the poor programmer's burden. On the contrary: the programmer should let correctness proof and program grow hand in hand.
Date: December 1990
Creator: Chisholm, G. H.; Smith, Brian Thomas & Wojcik, A. S.
Item Type: Refine your search to only Report
open access

COMMIX-1AR/P. a Three-Dimensional Transient Single-Phase Computer Program for Thermal Hydraulic Analysis of Single and Multicomponent Systems

Description: The COMMIX-1AR/P computer code is designed for analyzing the steady-state and transient aspects of single-phase fluid flow and heat transfer in three spatial dimensions. This version is an extension of the modeling in COMMIX-1A to include multiple fluids in physically separate regions of the computational domain, modeling descriptions for pumps, radiation heat transfer between surfaces of the solids which are embedded in or surround the fluid, a k-{var epsilon} model for fluid turbulence, and i… more
Date: July 1991
Creator: Blomquist, R. A.; Garner, P. L. & Gelbard, Ely M.
Item Type: Refine your search to only Report
open access

Two-Phase Flow Patterns and Frictional Pressure Gradients in a Small Rectangular Channel : a Comparison Between Two Horizontal Orientations

Description: In horizontal flow through a rectangular channel, the channel cross section can be oriented so that the long side is either vertical or horizontal. The effect of cross-section orientation on the fluid dynamic characteristics of two-phase flow is of interest in plate-fin heat exchanger design because a heat exchanger can be similarly oriented to operate in either of the two orientations. An earlier study of two-phase flow patterns and frictional pressure gradients in a small rectangular channel … more
Date: November 1990
Creator: Wambsganss, M. W.; Jendrzejczyk, J. A.; France, D. M. & Obot, Nsima T.
Item Type: Refine your search to only Report
open access

Practical Superconductor Development for Electrical Power Applications, Annual Report: 1990

Description: Annual report for the superconductor program at Argonne National Laboratory discussing the group's activities and research. This report describes technical progress of research and development efforts aimed at producing superconducting components based on the Y-Ba--Cu, Bi-Sr-Ca-Cu, Bi-Pb-Sr-Ca-Cu, and TI-Ba-Ca-Cu oxide systems including: synthesis and heat treatment of high-Ta superconductors, formation of monolithic and composite wires and tapes, superconductor/metal connectors, characterizat… more
Date: October 1990
Creator: Argonne National Laboratory. Materials and Components Technology Division.
Item Type: Refine your search to only Report
open access

Stress Corrosion Cracking of Candidate Waste Container Materials

Description: Six alloys have been selected as candidate container materials for the storage of high-level nuclear waste at the proposed Yucca Mountain site in Nevada. These materials are Type 304L stainless steel (SS), Type 316L SS, Incoloy 825, P-deoxidized Cu, Cu-30%Ni, and Cu-7%A1. The present program has been initiated to determine whether any of these materials can survive for 300 years in the site environment without developing through-wall stress corrosion cracks, and to assess the relative resistanc… more
Date: November 1990
Creator: Maiya, P. S.; Soppet, W. K.; Park, J. Y.; Kassner, T. F.; Shack, W. J. & Diercks, D. R.
Item Type: Refine your search to only Report
open access

Local Interfacial Area Concentration Measurement in Bubbly Flow

Description: The interfacial area concentration is one of the most important parameters in a thermal-hydraulic analysis of two-phase flow systems based on the two-fluid model. A theoretical foundation of the measurement method for the time averaged local interfacial area using a double sensor probe is presented. Based on this theory, the double sensor resistivity probe was employed for the measurement of local properties of two-phase flow such as the interfacial velocity, local interfacial area concentratio… more
Date: October 1990
Creator: Ishii, M. & Revankar, Shripad T.
Item Type: Refine your search to only Report
open access

Argonne National Laboratory-East Site Environmental Report for Calendar Year

Description: This report discusses the results of the environmental protection program at Argonne National Laboratory-East (ANL) for 1990. To evaluate the effects of ANL operations on the environment, samples of environmental media collected on the site, at the site boundary, and off the ANL site were analyzed and compared to applicable guidelines and standards.
Date: July 1991
Creator: Golchert, N. W.; Duffy, T. L. & Moos, L. P.
Item Type: Refine your search to only Report
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