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104
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40
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Estimation of Reaction and Heat Release Rates for Graphite Oxidation
A literature study has been made of rates for the reaction of oxygen with high-purity artificial graphite. Values from a number of sources have been expressed on a common basis which provides approximate correction for the retarding effects of oxygen diffusion in the graphite pores. The corrected rates can be correlated by the equation k = 7.24 x 10^9 exp (-22 100/T), where k has units of weight fraction oxidized per hour and T as in °K. Effects of oxygen concentration, solid and gas-phase contaminants, and radiation on the observed rates are discussed. Methods for estimating rates and spatial distribution of heat release during graphite oxidation are presented. These should be of value in analyzing the hazard of a graphite fire following a coolant system rupture in a gas-cooled, graphite-moderated reactor.
Date:
October 19, 1960
Creator:
Prados, John W.
Object Type:
Report
System:
The UNT Digital Library
A Rotating Source for Calibration Purposes
This paper discusses a remotely operated system developed to transport (raise and lower) a 1/2 gram radium gamma radiation source for calibration of the HAPO film badges and finger rings. The system employs the rotometer principle for positioning the source for operating purposes. An accurate timer is utilized to assure the desired exposure time.
Date:
October 19, 1959
Creator:
Kocher, L. F.
Object Type:
Report
System:
The UNT Digital Library
Plutonium Oxalate Disk Filter and Filter Media Studies
Presently rotary drum filters are being used for plutonium oxalate slurry filtration in the 234-5 Building. Changing of the filter cloth used on a rotary drum is a time consuming operation which involves ever increasing radiation exposure to maintenance personnel. Consequently, studies were conducted in the 321 Building on a disk type filter which could be adapted for simple and quick ("one-nut") replacement of the filter medium.
Date:
October 19, 1959
Creator:
Rey, George
Object Type:
Report
System:
The UNT Digital Library
Accuracy of Volume Measurements in a Large Process Vessel
The Non-Production Fuel Reprocessing Program involves the chemical processing of valuable reactor fuels received from privately owned power reactors. It is necessary therefore, to accurately measure the fuel material received in order to insure proper payment to reactor operator and to provide the Atomic Energy Commission with appropriate accountability data. The volume measurement study described herein was conducted in order to determine the limits of accuracy that could be obtained in measuring relatively large volumes of solution under plant processing conditions.
Date:
October 19, 1959
Creator:
Pleasance, C. L.
Object Type:
Report
System:
The UNT Digital Library
Wave Functions for Antishielding Factors of Ions and for the Electronic Polarisabilities of the Alkali Atoms
The purpose if this paper is to present tables of perturbed wave functions which have been obtained in three recent investigations: (1) wave functions v1'(nℓ→ℓ') which pertains to the perturbation of the d electrons of various ions as a result of the potential due to a nuclear quadrupole moment Q3 (2) wave functions v1',H(nℓ→ℓ) which represent the antishielding of the d electrons for a possible nuclear hexadecapole moment H; (3) wave functions u2'(ns→p) which pertain to the dipole perturbation of the valence (ns) electrons of the alkali atoms. Throughout this paper, the notation is the same as in a previous report in which a similar tabulation of perturbed wave function was made.
Date:
October 19, 1962
Creator:
Sternbeiner R. M.
Object Type:
Report
System:
The UNT Digital Library
Aeroplane-Kite.
Patent for a new aeroplane-kite which can be "readily dismantled and folded for shipping and easily assembled and placed in position for flying without the use of numerous fastenings and detachable parts, thereby making for simplicity and practicability" (lines 12-17). Also includes wind tunnels and a fuselage frame which is so easily assembled that a child can do it.
Date:
October 19, 1920
Creator:
McLaughlin, James T.
Object Type:
Patent
System:
The Portal to Texas History
Air-Pump.
Patent for a new and improved air pump capable of releasing air from the cylindrical casing in one motion. The updated design will also eliminate any lubricating oil from leaking into a tire.
Date:
October 19, 1920
Creator:
Lawley, Ira
Object Type:
Patent
System:
The Portal to Texas History
Boll-Weevil Catcher.
Patent for agricultural devices and more particularly to a device to be attached to a cultivator for catching boll weevil or the like, during the cultivation of cotton.
Date:
October 19, 1920
Creator:
Stanalan, William
Object Type:
Patent
System:
The Portal to Texas History
Liquid Coating Composition
Patent for improved non-flammable paint and multi-purpose byproduct of paint production process.
Date:
October 19, 1920
Creator:
McKay, Arthur N. & Willis, William L.
Object Type:
Patent
System:
The Portal to Texas History
Liquid Dispensing Machinemm
Patent for a machine can dispense potable liquids to several customers at the same time.
Date:
October 19, 1920
Creator:
Ogden, Clayton N.
Object Type:
Patent
System:
The Portal to Texas History
Well-Boring Apparatus
Patent for "new and useful improvements in well boring apparatus. The object of the invention is to provide an apparatus of the character described embodying a rotary table and a novel means for connecting the same to the string of pipe, which extends down into the well and which is rotated by said table and in turn rotates the boring tool carried by the lower end of said spring of pipe" (lines 9-18) including instructions and illustrations.
Date:
October 19, 1920
Creator:
Decker, Harry R.
Object Type:
Patent
System:
The Portal to Texas History
Cotton Blocking Machine
Patent for an inexpensive attachment to a cotton cultivator/checking machine to improve the intake capacity of the cultivator itself. The blocking machine would be used to replace the manual labor task of chopping cotton before insertion into the cultivator for processing.
Date:
October 19, 1920
Creator:
Ford, Barnie S.
Object Type:
Patent
System:
The Portal to Texas History
Train Signaling And Stopping Device.
Patent for Train Signaling And Stopping Device improvements intended to be of low cost, simple, durable, and run on electricity.
Date:
October 19, 1920
Creator:
McGregor, Charles Thomas
Object Type:
Patent
System:
The Portal to Texas History
Surface-Treating Machine
Patent for a machine that treats surfaces. Illustration is included.
Date:
October 19, 1920
Creator:
Clarke, Alex A.
Object Type:
Patent
System:
The Portal to Texas History
Surface-Treating Machine.
Patent for a surface treating machine that improves support, where the surface treating member is "driven by intermediate means from a motor displaced from the member, together with means of effecting adjustments of the surface treating member with relation to the work" (lines 13-15), with illustrations.
Date:
October 19, 1920
Creator:
Clarke, Alex A.
Object Type:
Patent
System:
The Portal to Texas History
Surface-Treating Device.
Patent for a surface cleaning device that provides a continuously moving surface treating member which is bodily adjustable in a suitable support.
Date:
October 19, 1920
Creator:
Clark, Alex A.
Object Type:
Patent
System:
The Portal to Texas History
Texas Fourth Court of Appeals District Annual Financial Report: 2018
Annual financial report of the Fourth Court of Appeals District documenting income, expenditures, and other relevant financial information for fiscal year 2018.
Date:
October 19, 2018
Creator:
Texas. Court of Appeals (4th)
Object Type:
Report
System:
The Portal to Texas History
Megachannel. gamma. --. gamma. coincidence system using a PDP-8/E computer and moving-head disks
A megachannel pulse-height analysis system using a PDP-8/E computer and two moving-head disk memories has been developed. The system has a storage capacity of 220 memory locations, is capable of processing 1100 events/s, and provides on-line sorting and disk storage. An X- or Y-pulse-height spectrum in coincidence with one or several arbitrary pulse-height windows can be assembled in core for scope display and spectral analysis within 2 to 20 seconds. Reconstruction of a complete X- or Y-pulse-height spectrum requires about 3 minutes.
Date:
October 19, 1976
Creator:
Ruhter, W. D.; Camp, D. C.; Mann, L. G.; Niday, J. B. & Siemens, P. D.
Object Type:
Article
System:
The UNT Digital Library
Imperial Valley Environmental Project: progress report
Progress is reported in six areas of research: air quality, water quality, ecosystem quality, subsidence and seismicity, socioeconomic effects, and integrated assessment. A major goal of the air quality element is to evaluate the rate of emission of H/sub 2/S, CO/sub 2/, H/sub 2/, N/sub 2/, CH/sub 4/, and C/sub 2/H/sub 6/ from the operation of the geothermal loop experimental facility at Niland. Concentrations of H/sub 2/S were found to vary between 1500 to 4900 ppM by volume at the Niland facility. To distinguish between geothermal fluids and other waters, extensive sampling networks were established. A major accomplishment was the installation of a high-resolution subsidence-detection network in the Salton Sea geothermal field area, centered on the test facility at Niland. A major effort went into establishing a background of data needed for subsequent impact assessments related to socioeconomic issues raised by geothermal developments. Underway are a set of geothermal energy scenarios that include power development schedules, technology characterizations, and considerations of power-plant-siting criteria. A Gaussian air-pollution model was modified for use in preliminary air-quality assessments. A crop-growth model was developed to evaluate impacts of gases released from geothermal operations on various agricultural crops. Work is also reported on the legal …
Date:
October 19, 1977
Creator:
Phelps, Paul L. & Anspaugh, Lynn R.
Object Type:
Report
System:
The UNT Digital Library
Mass spectrometric analytical services and research activities to support coal-liquid characterization research. Quarterly report, June 9, 1976--October 5, 1976. [10 refs]
Low-resolution field ionization and high-resolution 70-eV electron-impact mass spectra data were obtained for 28 GPC fractions acquired from Bartlett, Kansas, heavy petroleum by members of the Separation and Characterization group at the Bartlesville Energy Research Center. This group was supplied with most-probable empirical formulas deduced from the high resolution electron-impact data. Analysis of the qualitative and quantitative analytical data previously obtained for GPC fractions from a Synthoil sample by high- and low-resolution field-ionization and high-resolution 70-eV electron-impact mass spectrometry is essentially complete. A study of field-ionization sensitivities for saturates and mixtures of saturates and aromatics is in progress. Components required to modify the combined FI/EI ion source to permit operation in the field desorption mode have been ordered.
Date:
October 19, 1976
Creator:
Scheppele, S. E.
Object Type:
Report
System:
The UNT Digital Library
Texas Preventable Disease News, Volume 45, Number 42, October 19, 1985
Newsletter of the Texas Bureau of Disease Control and Epidemiology discussing the news, activities, and events of the organization and other information related to health in Texas.
Date:
October 19, 1985
Creator:
Texas. Bureau of Disease Control and Epidemiology.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
A Dynamically Adaptive Arbitrary Lagrangian-Eulerian Method for Hydrodynamics
A new method that combines staggered grid Arbitrary Lagrangian-Eulerian (ALE) techniques with structured local adaptive mesh refinement (AMR) has been developed for solution of the Euler equations. The novel components of the combined ALE-AMR method hinge upon the integration of traditional AMR techniques with both staggered grid Lagrangian operators as well as elliptic relaxation operators on moving, deforming mesh hierarchies. Numerical examples demonstrate the utility of the method in performing detailed three-dimensional shock-driven instability calculations.
Date:
October 19, 2002
Creator:
Anderson, R W; Pember, R B & Elliott, N S
Object Type:
Article
System:
The UNT Digital Library
The raw disk i/o performance of compaq storage works RAID arrays under tru64 unix
We report on the raw disk i/o performance of a set of Compaq StorageWorks RAID arrays connected to our cluster of Compaq ES40 computers via Fibre Channel. The best cumulative peak sustained data rate is l17MB/s per node for reads and 77MB/s per node for writes. This value occurs for a configuration in which a node has two Fibre Channel interfaces to a switch, which in turn has two connections to each of two Compaq StorageWorks RAID arrays. Each RAID array has two HSG80 RAID controllers controlling (together) two 5+p RAID chains. A 10% more space efficient arrangement using a single 1l+p RAID chain in place of the two 5+P chains is 25% slower for reads and 40% slower for writes.
Date:
October 19, 2000
Creator:
Uselton, A C
Object Type:
Report
System:
The UNT Digital Library
A study of transient particle coarsening
Efforts were concentrated on numerically modeling the time-dependent particle coarsening (Ostwald ripening) process. Four models were included: Lifshsitz-Slyozov-Wagner, Brailsford and Wynblatt, Marqusee and Ross, and Marder. The simulations monitored the particle size distribution (PSD) as a function of time; initial PSDs were derived from classical nucleation theory. The ripening kinetics can be represented as a plot of the second moment of normalized PSD vs time. A geometric correction factor is discussed. Future research is planned on Al-Li.
Date:
October 19, 1992
Creator:
Hoyt, J. J.
Object Type:
Report
System:
The UNT Digital Library