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Chemical Separation of Isotopes Section Semiannual Progress Report for Period Ending June 30, 1955

Description: The countercurrent gas-liquid system BF3(g)—anisole·BF3(l) for the concentration of boron isotopes has been studied. The single-storage separation factor varies from 1.039 at 0°C to 1.029 at 30°C. Rate of exchange is rapid, and, with efficient contacting equipment, complete exchange may be obtained in less than 15 sec. A total separation of 1.525 has been realized in laboratory equipment. The critical-product reflux reaction is quite efficient. Only about 55 moles of BF3 remain in each million … more
Date: February 23, 1956
Creator: Clewett, G. H. & Drury, J. S.
Partner: UNT Libraries Government Documents Department
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A Monte Carlo Estimation of the High Energy Neutron Flux Distribution in the ORNL Graphite Reactor

Description: The flux through a given region is proportional to the total lengths of the neutron flight paths that intersect that region. The analytical Monte Carlo procedure manufactured neutron flight paths and totaled the lengths of all paths intercepted by the regions illustrated in Figure 1. The procedure was designed to utilize the various symmetries in the lattice. / Consider a portion of the lattice whose planar cross-section is shown in Figure 5. If R is the region in which the flux is to be estima… more
Date: February 23, 1955
Creator: Moshman, Jack
Partner: UNT Libraries Government Documents Department
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A Partially Degenerate, Relativistic, Ideal Electron Gas

Description: Tables of the electron pressure and kinetic energy for a partially degenerate, relativistic, ideal electron gas are computed by numerical integration using an IBM 7090 electronic calculator. These are given in terms of log10(B) and log10(0), where B is the ratio of the temperature to the rest mass of the electron and (O) is proportional to the numerical density of electrons. The tables include values of T from 5 million to 400 billion degrees and cover the range of electron densities from the r… more
Date: February 23, 1961
Creator: Grasberger, William H.
Partner: UNT Libraries Government Documents Department
open access

Deposit Summary

Description: Deposit summary to American National Bank of Texas of $2,788.30 made on February 23, 2009.
Date: February 23, 2009
Partner: UNT Libraries Special Collections
open access

Determination of the rate and efficiency of nitrogen transfer from phytoplankton to zooplankton using nitrogen-15 as a tracer. Final report

Description: The rate of assimilated nitrogen transfer from phytoplankton to zooplankton was measured under field conditions for natural mixed zooplankton populations using a nitrogen-15 tracer technique. The variability in rates, which ranged from 0.261 to 1.792 gram-atoms of phytoplankton nitrogen/gram-atoms of zooplankton nitrogen/24 hours, are thought to reflect a variability in the age frequency distribution of the zooplankton population. The data were used to calculate assimilation efficiencies which … more
Date: February 23, 1976
Creator: Harris, V M
Partner: UNT Libraries Government Documents Department
open access

Quantitative analysis of thin foils using backscattering measurements. [He implants in Pd; composite Al/parylene]

Description: Backscattering of 1.25-MeV protons and alpha particles from thin foils is used for a nondestructive quantitative elemental analysis of thin foils. The detection of helium that had previously been implanted into a 1350 A palladium foil and the analysis of a composite aluminum and parylene foil are presented as examples of this technique.
Date: February 23, 1971
Creator: Mervine, L. R.; Der, R. C.; Fortner, R. J.; Kavanagh, T. M. & Khan, J. M.
Partner: UNT Libraries Government Documents Department
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Equilibrium water vapor pressure and total moisture content measurements on TATB

Description: Equilibrium water vapor pressure and total moisture content were measured for samples of TATB-10 percent Kel-F, TATB-6 percent Estane, and TATB-9 percent Viton in a temperature range from 296 to 365/sup 0/K. Heats of vaporization were obtained for temperatures from 296 to 333/sup 0/K. Below 333/sup 0/K the water in the samples behaved as dissolved water and the Clausius-Clapeyron equation was applicable, while above 333/sup 0/K the water dissolved in the samples became very mobile and for pract… more
Date: February 23, 1976
Creator: Colmenares, C. & McDavid, L. C.
Partner: UNT Libraries Government Documents Department
open access

Index to Nuclear Safety. A technical progress review by chronology, permuted title, and author. Vol. 11, No. 1--Vol. 17, No. 6

Description: This index to Nuclear Safety covers articles in Nuclear Safety Vol. 11, No. 1 (Jan.-Feb. 1970), through Vol. 17, No. 6 (Nov.-Dec. 1976). The index includes a chronological list of articles (including abstract) followed by KWIC and Author Indexes. Nuclear Safety, a bimonthly technical progress review prepared by the Nuclear Safety Information Center, covers all safety aspects of nuclear power reactors and associated facilities. The index lists over 350 technical articles in the last six years of… more
Date: February 23, 1977
Creator: Cottrell, W. B. & Klein, A.
Partner: UNT Libraries Government Documents Department
open access

COG validation: SINBAD Benchmark Problems

Description: We validated COG, a 3D Monte Carlo radiation transport code, against experimental data and MNCP4C simulations from the Shielding Integral Benchmark Archive Database (SINBAD) compiled by RSICC. We modeled three experiments: the Osaka Nickel and Aluminum sphere experiments conducted at the OKTAVIAN facility, and the liquid oxygen experiment conducted at the FNS facility. COG results are in good agreement with experimental data and generally within a few % of MCNP results. There are several possib… more
Date: February 23, 2004
Creator: Lent, E M; Sale, K E; Buck, R M & Descalle, M
Partner: UNT Libraries Government Documents Department
open access

Diagnostic Systems Approach to Watershed Management

Description: The water quality of discharge from the surface water system is ultimately dictated by land use and climate within the watershed. Water quality has vastly improved from point source reduction measures, yet, non-point source pollutants continue to rise. 30 to 40% of rivers still do not meet water quality standards for reasons that include impact from urban storm water runoff, agricultural and livestock runoff, and loss of wetlands. Regulating non-point source pollutants proves to be difficult si… more
Date: February 23, 2001
Creator: Davisson, M L
Partner: UNT Libraries Government Documents Department
open access

RCRA Assessment Plan for Single-Shell Tank Waste Management Area T at the Hanford Site

Description: A groundwater quality assessment plan was prepared to investigate the rate and extent of aquifer contamination beneath Waste Management Area T at the Hanford Site in Washington State. This plan is an update of a draft plan issued in January 1999, which guided work performed in fiscal year 2000.
Date: February 23, 2001
Creator: Hodges, Floyd N. & Chou, Charissa J.
Partner: UNT Libraries Government Documents Department
open access

HyperFlow Theory Manual

Description: This document presents the underlying theory for an unsteady computational model of the transient aerothermodynamics of a deformable vehicle entering an atmosphere at hypersonic speeds. Many unique features of the problem require unusual computational capabilities. The large accelerations associated with the vehicle's flight dynamics results in the body-fixed reference frame being non-inertial, and the governing equations must be modified to include this effect. The vehicle's structural deforma… more
Date: February 23, 2004
Creator: Felker, F F
Partner: UNT Libraries Government Documents Department
open access

Protein Model Database

Description: The phenomenal success of the genome sequencing projects reveals the power of completeness in revolutionizing biological science. Currently it is possible to sequence entire organisms at a time, allowing for a systemic rather than fractional view of their organization and the various genome-encoded functions. There is an international plan to move towards a similar goal in the area of protein structure. This will not be achieved by experiment alone, but rather by a combination of efforts in cry… more
Date: February 23, 2005
Creator: Fidelis, K; Adzhubej, A; Kryshtafovych, A & Daniluk, P
Partner: UNT Libraries Government Documents Department
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Reconstructing Ocean Circulation using Coral (triangle)14C Time Series

Description: We utilize monthly {sup 14}C data derived from coral archives in conjunction with ocean circulation models to address two questions: (1) how does the shallow circulation of the tropical Pacific vary on seasonal to decadal time scales and (2) which dynamic processes determine the mean vertical structure of the equatorial Pacific thermocline. Our results directly impact the understanding of global climate events such as the El Nino-Southern Oscillation (ENSO). To study changes in ocean circulatio… more
Date: February 23, 2001
Creator: Kashgarian, M. & Guilderson, T. P.
Partner: UNT Libraries Government Documents Department
open access

Computation of Hypersonic Flow about Maneuvering Vehicles with Changing Shapes

Description: Vehicles moving at hypersonic speeds have great importance to the National Security. Ballistic missile re-entry vehicles (RV's) travel at hypersonic speeds, as do missile defense intercept vehicles. Despite the importance of the problem, no computational analysis method is available to predict the aerodynamic environment of maneuvering hypersonic vehicles, and no analysis is available to predict the transient effects of their shape changes. The present state-of-the-art for hypersonic flow calcu… more
Date: February 23, 2004
Creator: Ferencz, R M; Felker, F F & Castillo, V M
Partner: UNT Libraries Government Documents Department
open access

A Discussion of SY-101 Crust Gas Retention and Release Mechanisms

Description: A Discussion of SY-101 Crust Gas Retention and Release Mechanisms
Date: February 23, 1999
Creator: Rassat, Scot D.; Gauglitz, Phillip A.; Caley, Stacie M.; Mahoney, Lenna A. & Mendoza, Donaldo P.
Partner: UNT Libraries Government Documents Department
open access

Industrial pulverized coal low NO{sub x} burner. Phase 1

Description: The objective of Phase 1 of this program is to develop a novel low NO{sub x} pulverized coal burner, which offers near-term commercialization potential, uses preheated combustion air of up to 1000{degree}F, and which can be applied to high-temperature industrial heating furnaces, chemical process furnaces, fired heaters, and boilers. In the low NO{sub x} coal burner concept, the flue gas is recycled to the burner by jet pump action provided by the momentum of the primary air flow. The recycled … more
Date: February 23, 1993
Partner: UNT Libraries Government Documents Department
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Production Test IP-237-A, irradiation of enriched seven-rod cluster elements for ETR testing

Description: Two Zircaloy-2 jacketed seven-rod cluster elements will be irradiated in the 3674 KE front-to-rear test hole to an exposure of 1000 MWD/T and two elements will be irradiated in the 3674 KW front-to-rear test hole to an exposure of 2000 MWD/T. After irradiation, the elements will be sent to the ETR where they will be ruptured during reactor operation to determine the failure characteristics of co-extruded Zircaloy-2 jacketed cluster elements.
Date: February 23, 1959
Creator: Kratzer, W. K.
Partner: UNT Libraries Government Documents Department
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DOE IGCC Project. Fourth quarterly report, [October 1, 1993--December 31, 1993]

Description: We have previously reported a decision to move the simple cycle commercial operation to a date coincident with the July 1, 1996 Integrated Gasification Combined Cycle (IGCC) commercial operation date. This necessitated a major rescheduling of the engineering and construction efforts to ensure a totally coordinated plan. This rescheduling was completed in mid October 1994 and resulted in an integrated engineering and construction schedule. The major effort in the fourth quarter of 1994 centered … more
Date: February 23, 1994
Partner: UNT Libraries Government Documents Department
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[Computer Science and Telecommunications Board activities]

Description: The board considers technical and policy issues pertaining to computer science, telecommunications, and associated technologies. Functions include providing a base of expertise for these fields in NRC, monitoring and promoting health of these fields, initiating studies of these fields as critical resources and sources of national economic strength, responding to requests for advice, and fostering interaction among the technologies and the other pure and applied science and technology. This docu… more
Date: February 23, 1993
Creator: Blumenthal, M. S.
Partner: UNT Libraries Government Documents Department
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Radiation incident

Description: This report discusses a radiation exposure accident of personnel at the Hanford production reactor facilities.
Date: February 23, 1967
Creator: Myers, J. G.
Partner: UNT Libraries Government Documents Department
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