Collection
Office of Scientific & Technical Information Technical Reports
244
Defense Base Closure and Realignment Commission
106
Congressional Research Service Reports
61
Texas Patents
47
Texas Attorney General Opinions
35
Technical Report Archive and Image Library
19
Government Accountability Office Reports
15
National Advisory Committee for Aeronautics Collection
10
Texas Register
8
TRAIL Microcard Collection
7
4 More
Country
546 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
546
next
Texas Register, Volume 48, Number 41, Pages 5869-6052, October 13, 2023
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
October 13, 2023
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
EXPIRE - A Reactivity Lifetime Calculation
EXPIRE is a calculation which predicts the reactivity-lifetime, instantaneous and integrated effective multiplication constants and instantaneous and integrated effective multiplication constants and instantaneous conversion ratio for heterogeneous reactors. The concentration of all the isotopes of interest from Th232 to Am243 are calculated as a function of time using the average reactor power density and a uniform flux distribution. The equations have been programmed for the IBM-704 computer and the average running time is approximately two minutes per reactor lifetime.
Date:
October 13, 1960
Creator:
Jaye, S.
Object Type:
Report
System:
The UNT Digital Library
Decontamination of EGCR Charge and Service Machines
Methods for the noncorrosive removal of volatile fission products and UO2 dust from carbon steel and stainless steel have been developed. Procedures for applying these methods to the decontamination of the EGCR charge and service machines are described.
Date:
October 13, 1960
Creator:
Meservey, A. B.; Chilton, J. M. & Ferguson, D. E.
Object Type:
Report
System:
The UNT Digital Library
Determination of Free Acid in Highly Radioactive Solutions by Remotely Controlled Conductometric Titration
A conductometric titration method described by Goldstein was adapted for use in a remote analytical facility. The results obtained by mean of experiments made prior to this adaptation indicated that methanol is the most satisfactory medium in which to determine excess sulfuric acid in uranyl sulfate solutions that stimulate Homogeneous Reactor type fuel. When methanol is used, the complexation of hydrolyzable ions with sodium fluoride, as described by Pepkowitz, Sabol, and Dustin, is not required.
Date:
October 13, 1960
Creator:
Corcoran*, R. E.; Zittel, H. E.; Dinsmore, S. R. & Koskela, U.
Object Type:
Report
System:
The UNT Digital Library
Attack on Uranium by Lithium at 600 C
The tests described in this report were static tests devised to afford a basis for a quick evaluation of the resistance of uranium to attack by lithium. The work was done at the same time as the tests of beryllium, thorium, and various engineering metals in lithium (described in ANL-4990); but the results with uranium are given in the present classified report so that the results of the other tests can be published as an unclassified document. The procedure for carrying out the tests is described in ANL-4990.
Date:
October 13, 1950
Creator:
Wilkinson, Walter D. & Yaggee, Frank L.
Object Type:
Report
System:
The UNT Digital Library
Three-Velocity Neutron Diffusion Calculations for an Untamped Oralloy Sphere
The results of a series of neutron diffusion calculations relating to an untamped Orally sphere are presented in detail in this report. The three-velocity neutron transport theory was taken as the basis for the analytical work preceding the computations. This particular theory, also known as the transport approximation, is defined in LA-1271 and known to be quite accurate for assemblies primarily involving materials of large atomic weight. For a sphere of uniform density and atomic composition the transport theory has another advantage. It can readily be formulated in terms of simultaneous integral equations (in our case three), relatively simple in form, involving the collision densities [formula] and a set of parameter values describing the materials. Nb(r) is , as indicated, a function of the radial distance [formula] and the velocity index g, g - 1, 2, 3. The parameters, fifteen in number for the three-velocity theory, are comprised of the velocities, the inverse mean free paths, and the transfer coefficients.
Date:
October 13, 1951
Creator:
Carlson, Bengt
Object Type:
Report
System:
The UNT Digital Library
The Equation of State of Solids at Low Temperature
Technical report describing and evaluating the the three experimental methods for obtaining equation of state data at low temperatures; (1) approximate measurement of the PVT relationship by a piston-displacement technique, (2) the measurement of a heat capacity at constant volume as a function of molar volume and temperature, and (3) direct measurement of the pressure variation of the elastic constants using ultrasonic techniques. X-ray methods also might be applicable.
Date:
October 13, 1961
Creator:
Bernardes, N. (Newton), 1931- & Swenson, C. A.
Object Type:
Report
System:
The UNT Digital Library
Summary of the Research Progress Meeting of September 1, 1949
The absolute excitation functions for the production of fission by charged particle bombardment in several substances were investigated at both high and low energies. The low energy work was done at the 60-inch Crocker cyclotron with alpha particles and deuterons, while the high energy work was done at the 184-inch cyclotron with alpha particles, deuterons, and protons.
Date:
October 13, 1949
Creator:
Wakerling, R. K. (Raymond Kornelious), 1914-
Object Type:
Report
System:
The UNT Digital Library
Characterization of SAES St198 zirconium-iron-tin alloy
A waste minimization program to develop a non-oxidative stripper system based on metallic getters is being conducted. Initial development is being performed using a Zr-Fe-Sn intermetallic alloy getter procured as Stl98 from SAES Gefters/USA., Inc. This memorandum describes characterizations of physical and compositional properties of SAES Stl98. SAES Stl98 getter was supplied as very durable, cylindrical pellets made by compaction of. granules of Zr-Fe-Sn alloy up to 150 [mu]m in size. Pellet density was 5.2 g/mL corresponding to 24.8% open porosity and very little closed porosity. Bulk composition of Stl98 was 73.6 weight percent (w/o) Zr, 23.3 w/o Fe and 1.2 w/o Sn. Stl98 consists of Zr[sub 2]Fe primary phase along with four secondary phases (ZrFe[sub 2], Zr[sub 5]FeSn, [alpha]-zirconium, and [eta]-Zr[sub 4]Fe[sub 2]O[sub 0.6]). Hydriding characteristics of Stl98 are expected to differ slightly from those of Zr[sub 2]Fe because [alpha]-zirconium and, possibly, Zr[sub 5]FeSn also react with hydrogen.
Date:
October 13, 1992
Creator:
Mosley, W. C.
Object Type:
Report
System:
The UNT Digital Library
Research in neutron velocity spectroscopy. Final report. [Summaries of research activities at Columbia Univ]
A brief summary of papers published since the last progress report (June 1974) is presented. The research represents contributions to neutron resonance spectroscopy below 100 keV. (SDF)
Date:
October 13, 1976
Creator:
Rainwater, J.
Object Type:
Report
System:
The UNT Digital Library
Online high sensitivity measurement system for transuranic aerosols
A measurement system for transuranic aerosols has been designed that will be able to withstand the corrosive nature of stack effluents and yet have extremely high sensitivity. It will be capable of measuring 1 maximum permissible concentration (MPC) of plutonium or americium in 30 minutes with a fractional standard deviation of less than 0.33. Background resulting from /sup 218/Po is eliminated by alpha energy discrimination and a decay scheme analysis. A microprocessor controls all data acquisition, data reduction, and instrument calibration.
Date:
October 13, 1976
Creator:
Kordas, J. F. & Phelps, P. L.
Object Type:
Article
System:
The UNT Digital Library
Computerized data management: the key to laser plasma interaction data analysis
Data processing for the laser systems in operation at LLL is discussed. Methods for automatic storage, reduction and display using the computers and the Octopus system at LLL are described. This paper briefly describes how this data is compiled, correlated, and displayed. (MOW)
Date:
October 13, 1975
Creator:
Pettipiece, K. J. & Eddleman, H. E.
Object Type:
Article
System:
The UNT Digital Library
High resolution, large through-put x-ray microscopes for target diagnostics
The imaging properties and design principles for an axisymmetric x-ray microscope using a hyperboloid surface preceding an ellipsoidal reflecting surface are discussed. The results of a design study investigating the off-axis resolution of x-ray microcopes are presented. (MOW)
Date:
October 13, 1975
Creator:
Palmieri, T. M.; Boyle, M. J.; Ahlstrom, H. G. & Monjes, J. A.
Object Type:
Article
System:
The UNT Digital Library
Texas Disease Prevention News, Volume 57, Number 21, October 1997
Newsletter of the Texas Department of Health discussing the news, activities, and events of the organization and other information related to health in Texas.
Date:
October 13, 1997
Creator:
Texas. Department of Health.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Preventable Disease News, Volume 44, Number 41, October 13, 1984
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 13, 1984
Creator:
Texas. Bureau of Disease Control and Epidemiology.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Block Matching for Object Tracking
Models which describe road traffic patterns can be helpful in detection and/or prevention of uncommon and dangerous situations. Such models can be built by the use of motion detection algorithms applied to video data. Block matching is a standard technique for encoding motion in video compression algorithms. We explored the capabilities of the block matching algorithm when applied for object tracking. The goal of our experiments is two-fold: (1) to explore the abilities of the block matching algorithm on low resolution and low frame rate video and (2) to improve the motion detection performance by the use of different search techniques during the process of block matching. Our experiments showed that the block matching algorithm yields good object tracking results and can be used with high success on low resolution and low frame rate video data. We observed that different searching methods have small effect on the final results. In addition, we proposed a technique based on frame history, which successfully overcame false motion caused by small camera movements.
Date:
October 13, 2003
Creator:
Gyaourova, A; Kamath, C & Cheung, S
Object Type:
Report
System:
The UNT Digital Library
Stochastic Kinetic Monte Carlo algorithms for long-range Hamiltonians
We present a higher order kinetic Monte Carlo methodology suitable to model the evolution of systems in which the transition rates are non- trivial to calculate or in which Monte Carlo moves are likely to be non- productive flicker events. The second order residence time algorithm first introduced by Athenes et al.[1] is rederived from the n-fold way algorithm of Bortz et al.[2] as a fully stochastic algorithm. The second order algorithm can be dynamically called when necessary to eliminate unproductive flickering between a metastable state and its neighbors. An algorithm combining elements of the first order and second order methods is shown to be more efficient, in terms of the number of rate calculations, than the first order or second order methods alone while remaining statistically identical. This efficiency is of prime importance when dealing with computationally expensive rate functions such as those arising from long- range Hamiltonians. Our algorithm has been developed for use when considering simulations of vacancy diffusion under the influence of elastic stress fields. We demonstrate the improved efficiency of the method over that of the n-fold way in simulations of vacancy diffusion in alloys. Our algorithm is seen to be an order of magnitude …
Date:
October 13, 2003
Creator:
Mason, D R; Rudd, R E & Sutton, A P
Object Type:
Article
System:
The UNT Digital Library
Structure, Stability and ELM Dynamics of the H-Mode Pedestal in DIII-D
Experiments are described that have increased understanding of the transport and stability physics that set the H-mode edge pedestal width and height, determine the onset of Type-I edge localized modes (ELMs), and produce the nonlinear dynamics of the ELM perturbation in the pedestal and scrape-off layer (SOL). Predictive models now exist for the n{sub e} pedestal profile and the p{sub e} height at the onset of Type-I ELMs, and progress has been made toward predictive models of the T{sub e} pedestal width and nonlinear ELM evolution. Similarity experiments between DIII-D and JET suggested that neutral penetration physics dominates in the relationship between the width and height of the n{sub e} pedestal while plasma physics dominates in setting the T{sub e} pedestal width. Measured pedestal conditions including edge current at ELM onset agree with intermediate-n peeling-ballooning (P-B) stability predictions. Midplane ELM dynamics data show the predicted (P-B) structure at ELM onset, large rapid variations of the SOL parameters, and fast radial propagation in later phases, similar to features in nonlinear ELM simulations.
Date:
October 13, 2004
Creator:
Fenstermacher, M. E.; Leonard, A. W.; Osborne, T. H.; Snyder, P. B.; Thomas, D. M.; Boedo, J. A. et al.
Object Type:
Article
System:
The UNT Digital Library
The National Ignition Facility: The World's Largest Laser
The National Ignition Facility (NIF), currently under construction at the Lawrence Livermore National Laboratory, is a stadium-sized facility containing a 192-beam, 1.8-Megajoule, 500-Terawatt, ultraviolet laser system together with a 10-meter diameter target chamber with room for nearly 100 experimental diagnostics. When completed, NIF will be the world's largest and most energetic laser experimental system, providing an international center to study inertial confinement fusion and the physics of matter at extreme energy densities and pressures. NIF's 192 energetic laser beams will compress fusion targets to conditions required for thermonuclear burn, liberating more energy than required to initiate the fusion reactions. Other NIF experiments will allow the study of physical processes at temperatures approaching 10{sup 8} K and 10{sup 11} Bars, conditions that exist naturally only in the interior of stars, planets and in nuclear weapons. NIF has now completed the first phases of its laser commissioning program. The first four beams of NIF have generated 106 kilo-joules of infrared light, exceeding design requirements. Operation of single beams at the second harmonic (531 nm) and third harmonic (351 nm) at greater than 10 kilojoules have also exceeded the performance criteria. NIF's target experimental systems are being commissioned and experiments have begun. This …
Date:
October 13, 2003
Creator:
Moses, E I
Object Type:
Article
System:
The UNT Digital Library
Non-Scaling Fixed Field Gradient Optimization.
Optimization of the non-scaling FFAG lattice for the specific application of the muon acceleration with respect to the minimum orbit offsets, minimum path length and smallest circumference is described. The short muon lifetime requires fast acceleration. The acceleration is in this work assumed to be with super-conducting cavities. This sets up a condition of acceleration at the top of the sinusoidal RF wave.
Date:
October 13, 2004
Creator:
Trbojevic, D.
Object Type:
Article
System:
The UNT Digital Library
Adjusted Field Profile for the Chromaticity Cancellation in FFAG Accelerators.
In an earlier report they have reviewed four major rules to design the lattice of Fixed-Field Alternating-Gradient (FFAG) accelerators. One of these rules deals with the search of the Adjusted Field Profile, that is the field non-linear distribution along the length and the width of the accelerator magnets, to compensate for the chromatic behavior, and thus to reduce considerably the variation of betatron tunes during acceleration over a large momentum range. The present report defines the method for the search of the Adjusted Field Profile.
Date:
October 13, 2004
Creator:
Ruggiero, A. G.
Object Type:
Article
System:
The UNT Digital Library
DESIGN CRITERIA OF A PROTON FFAG ACCELERATOR.
There are two major issues that are to be confronted in the design of a Fixed-Field Alternating-Gradient (FFAG) accelerator, namely: (1) the stability of motion over the large momentum range needed for the beam acceleration, and (2) the compactness of the trajectories over the same momentum range to limit the dimensions of the magnets. There are a numbers of rules that need to be followed to resolve these issues. In particular, the magnet arrangement in the accelerator lattice and the distribution of the bending and focusing fields are to be set properly in accordance with these rules. In this report they describe four of these rules that ought to be applied for the optimum design of a FFAG accelerator, especially in the case of proton beams.
Date:
October 13, 2004
Creator:
Ruggiero, Alessandro G.
Object Type:
Article
System:
The UNT Digital Library
ERHIC INTERACTION REGION DESIGN.
This paper presents the current interaction region design status of the ring-ring version of the electron-ion collider eRHIC (release 2.0).
Date:
October 13, 2003
Creator:
MONTAG,C. PARKER,B. PTITSYN,V. TEPIKIAN,S. WANG,D. WANG,F.
Object Type:
Article
System:
The UNT Digital Library
Chandra X-ray Observations of WZ Sge in Superoutburst
We present seven separate Chandra observations of the 2001 superoutburst of WZ Sge. The high-energy outburst was dominated by intense EUV emission lines, which we interpret as boundary layer emission scattered into our line of sight in an accretion disc wind. The direct boundary layer emission was hidden from view, presumably by the accretion disc. The optical outburst orbital hump was detected in the EUV, but the common superhump was not, indicating a geometric mechanism in the former and a dissipative mechanism in the latter. X-rays detected during outburst were not consistent with boundary layer emission and we argue that there must be a second source of X-rays in dwarf novae in outburst.
Date:
October 13, 2004
Creator:
Wheatley, P J & Mauche, C W
Object Type:
Article
System:
The UNT Digital Library