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Provisional Thermodynamic Functions for Para-Hydrogen

Description: The need for thermodynamic functions of para hydrogen, especially in compressed liquid and dense fluid states, prompts the tabulation of these provisional properties, computed by approximate methods utilizing the new PVT data of these reports. Computation and preparation of the tables is discussed under the following: Approximate Computational Methods; Correlation Methods; Discussion of Errors; and Tables of Functions.
Date: December 1961
Creator: Roder, Hans M.
Partner: UNT Libraries Government Documents Department

PRTR second generation shim assembly

Description: From introduction: "This document discusses the design, fabrication, assembly, and testing of a second generation shim rod assembly, and testing of a second generation shim rod assembly prototype for use in the Plutonium Recycle Test Reactor."
Date: November 1964
Creator: Rasmussen, D. E.
Partner: UNT Libraries Government Documents Department

PTA-1: A Computer Program for Analysis of Pressure Transients in Hydraulic Networks, Including the Effect of Pipe Plasticity

Description: The computer program PTA-1 performs pressure-transient analysis of large piping networks using the one-dimensional method of characteristics applied to a fluid-hammer formulation. The effect of elastic-plastic deformation of piping on pulse propagation is included in the computation. The program is particularly oriented toward the analysis of the effects of a sodium/water reaction on the intermediate heat-transport system of a liquid-metal-cooled fast breeder reactor, but may be applied just as usefully to other pulse sources and other piping systems. PTA-1 is capable of treating complex piping networks and includes a variety of junction types. Pipe friction and nonlinear velocity terms are included in the formulation. The program requires a minimum of input-data preparation and is designed to be easily used and modified. This report contains the governing equations, program structure, input requirements, program listing, and other information for PTA-1.
Date: November 1976
Creator: Youngdahl, C. K. & Kot, C. A.
Partner: UNT Libraries Government Documents Department

PTAC: a Computer Program for Pressure-Transient Analysis, Including the Effects of Cavitation

Description: PTAC was developed to predict pressure transients in nuclear-power-plant piping systems in which the possibility of cavitation must be considered. The program performs linear or nonlinear fluid-hammer calculations, using a fixed-grid method-of-characteristics solution procedure. In addition to pipe friction and elasticity, the program can treat a variety of flow components, pipe junctions, and boundary conditions, including arbitrary pressure sources and a sodium/water reaction. Essential features of transient cavitation are modeled by a modified column-separation technique. Comparisons of calculated results with available experimental data, for a simple piping arrangement, show good agreement and provide validation of the computational cavitation model. Calculations for a variety of piping networks, containing either liquid sodium or water, demonstrate the versatility of PTAC and clearly show that neglecting cavitation leads to erroneous predictions of pressure-time histories.
Date: September 1978
Creator: Kot, C. A. & Youngdahl, C. K.
Partner: UNT Libraries Government Documents Department

PTOLEMY : a Program for Heavy-Ion Direction-Reaction Calculations

Description: Many important additions and improvements have been made to Ptolemy since the previously-documented version of February 1976. An indication of this is that the list of keywords has been expanded by thirty. Collective-model inelastic excitement has been added. The computation of the transfer DWBA amplitudes has been significantly improved by the use of interpolation in the Ri +Ro variable. Elastic scattering and reactions involving identical particles may now be computed. Simultaneous optical model fits to several different elastic channels are possible. Significant changes to this manual are marked with a vertical bar in the left margin and should be carefully reviewed. In addition the contents of the manual have been extensively re-ordered.
Date: 1978
Creator: Macfarlane, M. H. & Pieper, Steven C.
Partner: UNT Libraries Government Documents Department

PTOLEMY, a Program for Heavy-Ion Direction-Reaction Calculations

Description: Ptolemy is an IBM/360 program for the computation of nuclear elastic and direct-reaction cross sections. It carries out both optical-model fits to elastic-scattering data at one or more energies, and DWBA calculations for nucleon-transfer reactions. Ptolemy has been specifically designed for heavy-ion calculations. It is fast and does not require large amounts of core. The input is exceptionally flexible and easy to use. This report outlines the types of calculation that Ptolemy can carry out, summarizes the formulas used, and gives a detailed description of its input.
Date: March 1976
Creator: Gloeckner, D. H.; Macfarlane, M. H. & Pieper, Steven C.
Partner: UNT Libraries Government Documents Department

Publications Received in the Library of the National Bureau of Standards, July 1962

Description: Report providing an alphabetical listing of the periodicals, both American and foreign, that are currently being received in the Washington (D.C.) Library of the National Bureau of Standards. Approximately 2,000 titles are cited, together with call numbers indicating the location of each in the NBS Washington Library. Although this information was compiled primarily for the use of the Bureau's scientific staff, it is also of value to libraries, scientific and technical organizations, and research workers.
Date: November 23, 1962
Creator: Hopper, Natalie J.
Partner: UNT Libraries Government Documents Department

Puerto Rico Energy Center Study: Executive Summary

Description: From introduction: The scope of work of the study was to compile and analyze information on the resources and requirements of the southwestern, southeastern, and north-central coastal regions of the Commonwealth, and assess industrial and agricultural activities which in conjunction with the power and desalting plants, might comprise the energy center complex. The study was also to identify the need for any experimental, pilot or demonstration projects which benefit the practical application of the Energy Center concept in Puerto Rico.
Date: July 1970
Creator: Burns and Roe
Partner: UNT Libraries Government Documents Department

Puerto Rico Energy Center Study: Site Selection Supplement

Description: From introduction: The PRWRA has contracted with the AEC to study the application of an Energy Center in Puerto Rico. The authority in turn has retained Burns and Roe, Inc. as a subcontractor and the Dow Chemical Company as a major sub-subcontractor to carry out this study.
Date: July 1970
Creator: Burns and Roe
Partner: UNT Libraries Government Documents Department

Puerto Rico Energy Center Study: Volume 1

Description: From introduction: The scope of work of the study was to compile and analyze information on the resources and requirements of the southwestern, southeastern, and north-central coastal regions of the Commonwealth, and assess industrial and agricultural activities which in conjunction with the power and desalting plants, might comprise the energy center complex. The study was also to identify the need for any experimental, pilot or demonstration projects which benefit the practical application of the Energy Center concept in Puerto Rico.
Date: July 1970
Creator: Burns and Roe
Partner: UNT Libraries Government Documents Department

A Pulse Ammeter

Description: A quantizing pulse ammeter has been designed which brackets an input pulse current peak between two preset current levels. These levels are easily selected by calibration circuits contained on the chassis. Readout is presented in the form of a Nixie visual display as well as an output which is suitable for automatic data recording.
Date: August 1961
Creator: Newman, J. J.
Partner: UNT Libraries Government Documents Department

Pulse Amplifier Manual

Description: Manual for the use and repair of repair pulse amplifiers. This covers general testing routines, specific tests, and a bibliography of related materials.
Date: 1962
Creator: Fairstein, E.
Partner: UNT Libraries Government Documents Department

Pulse Amplifiers Using Transistor Circuits

Description: From Introduction: "The high frequency response remains important even when pulse shaping is introduced. Pulse shaping is used to improve the time resolution of the system, to minimize overload distortion, or to facilitate the action of discriminating and recording circuits. The amplifier response may be optimized by such shaping, but in general the overall characteristics will be fixed by the particular detector system."
Date: January 23, 1958
Creator: Graveson, R. T. & Sadowski, H.
Partner: UNT Libraries Government Documents Department

Pumping Station for Teche-Vermilion Basins, Atchafalaya River, Louisiana: Hydraulic Model Investigation

Description: Abstract: The model study was conducted to evaluate the characteristics of flow in the inlet channel, original sump, energy dissipator (saxophone outlet), and outlet channel and to develop practical modifications required for improving the hydraulic performance of the structure.
Date: March 1980
Creator: Saunders, Peter E. & Fletcher, Bobby P.
Partner: UNT Libraries Government Documents Department

The Purchase of Coal by the Government Under Specifications with Analyses of Coal Delivered for the Fiscal Year 1908-9

Description: From Introduction: "This bulletin is the third of a series showing the results of government purchases of coal according to specifications as its quality and giving typical forms of proposals for supplying coal and general information relating to government coal purchases. This paper gives in detail the results of government purchases of coal for the fiscal year 1908-9 and the list of contracts with abstracts of specifications for the fiscal year 1909-10, and summarizes the information on this subject obtained by the Survey. "
Date: 1910
Creator: Pope, George S.
Partner: UNT Libraries Government Documents Department

Purchase of Coal by the Government Under Specifications: with Analysis of Coal Delivered for the Fiscal Year 1908-9

Description: From Introduction: "This bulletin is the third of a series showing the results of government purchases of coal according to specifications as to its quality and giving typical forms of proposals for supplying coal and general information relating to government coal purchases. This paper gives in detail the results of government purchases of coal for the fiscal year 1908-9 and the list of contracts with abstracts of specifications for the fiscal year 1909-10, and summarizes the information on this subject obtained by the Survey."
Date: 1910
Creator: Pope, George S.
Partner: UNT Libraries Government Documents Department