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136
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131
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63
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45
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Facility Availability Brookhaven Graphite Research Reactor: January 1951 - March 1962
This technical report details and outlines the BGRR facility's operations and performance record over a period of twelve years. The author of this report finds that the reactor is "one of the most stable and dependable in the business." The report includes two figures.
Date:
May 18, 1962
Creator:
Thompson, Dudley
Object Type:
Report
System:
The UNT Digital Library
Optimizing the heat pipe for operation in a magnetic field when liquid-metal working fluids are used
A novel method for reducing the magnetohydrodynamic (MHD) pressure drops in the liquid metal flow in a heat pipe wick is described. By flattening the heat pipe, the eddy current return path in the metallic heat pipe wall is inreased significantly, thereby increasing the effective wall resistance. This, in turn, reduces the magnitude of the MHD pressure drop. The same principle can also be applied to flows of liquid metal coolants in a magnetic field.
Date:
May 18, 1981
Creator:
Werner, R. W. & Hoffman, M. A.
Object Type:
Report
System:
The UNT Digital Library
High temperature thermodynamics and vaporization of the zirconium--niobium--oxygen system
The vaporization behavior of the Zr--Nb--O system was studied by means of successive vaporization, Knudsen effusion-target collection experiments, and mass spectrometric analysis of the vapors effusing from a Knudsen crucible. The successive vaporization experiments were performed on two ternary samples in open crucibles. X-ray powder diffraction patterns of the residues and x-ray fluorescence analysis of the condensates and residues indicated the preferential vaporization of niobium-containing species with the composition of the residue subsequently becoming closer to that of congruently vaporizing ZrO/sub 2-x/. The Knudsen effusion-target collection experiments were employed on two samples, pure NbO/sub 2/(s) and a two-phase ZrO/sub 2/--NbO/sub 2/ mixture, in order to obtain information on the activity of NbO/sub 2/ in the two-phase mixture. Second law enthalpies and entropies of sublimation as well as third law enthalpies were obtained for both systems. The vaporization behaviors of five compositions in the Zr--Nb--O system, NbO/sub 2/, NbO, a ZrO/sub 2/--NbO/sub 2/ two-phase mixture, Nb/sub 2/O/sub 5/, and Zr/sub 6/Nb/sub 2/O/sub 17/, were investigated. Above Nb/sub 2/O/sub 5/ and the fully oxidized Zr/sub 6/Nb/sub 2/O/sub 17/ oxygen is preferentially lost; over NbO/sub 2/, the two-phase ZrO/sub 2/--NbO/sub 2/ system, and NbO the principal gaseous species is NbO/sub 2/.
Date:
May 18, 1978
Creator:
Rinehart, G.H.
Object Type:
Report
System:
The UNT Digital Library
Shock wave effects and metallurgical parameters
This review summarizes results from some principal investigations of shock-strain effects in metals. The strain contribution indeed plays a role in residual microstructures, particularly, if the strain becomes dominant as in ''under trapped'' experiments of low or moderate pressure or for that matter, of ''well trapped'' high pressure experiments. Not only does this strain contribution affect the microstructure by increasing deformation, a concommitant strain heat is generated and absorbed by the shocked material. This strain heat, if large enough (relative to the homologous temperature of the material), can and does have an annealing effect on the residual microstructure. This strain heat is over and above the values typically calculated for materials implying little or no strain. Although the accumulative effects of associated strain are not completely definite, the collective picture presented is one in which shock-induced strains, when large enough, have a significant effect on the residual microstructure. 43 refs., 20 figs.
Date:
May 18, 1987
Creator:
Staudhammer, K.P.
Object Type:
Article
System:
The UNT Digital Library
Atmospheric attenuation of solar radiation
The attenuation of solar radiation by the atmosphere between the heliostat and receiver of a Central Receiver solar energy system has been computed for a number of atmospheric conditions and tower-heliostat distances. The most important atmospheric variable is found to be the atmospheric aerosol content. No dependence of atmospheric water vapor is found and only a weak dependence on solar zenith angle. For a 500 m heliostat-tower distance two to four percent reductions are expected under typical desert conditions (50 to 120 km visibility). The reduction is approximately linear with heliostat-tower distance. A representative value of the attenuation coefficient is 0.051 km/sup -1/.
Date:
May 18, 1977
Creator:
Randall, C.M.
Object Type:
Report
System:
The UNT Digital Library
Molecular potentials and relaxation dynamics
The use of empirical pseudopotentials, in evaluating interatomic potentials, provides an inexpensive and convenient method for obtaining highly accurate potential curves and permits the modeling of core-valence correlation, and the inclusion of relativistic effects when these are significant. Recent calculations of the X/sup 1/..sigma../sup +/ and a/sup 3/..sigma../sup +/ states of LiH, NaH, KH, RbH, and CsH and the X/sup 2/..sigma../sup +/ states of their anions are discussed. Pseudopotentials, including core polarization terms, have been used to replace the core electrons, and this has been coupled with the development of compact, higly-optimized basis sets for the corresponding one- and two-electron atoms. Comparisons of the neutral potential curves with experiment and other ab initio calculations show good agreement (within 1000 cm/sup -1/ over most of the potential curves) with the difference curves being considerably more accurate. In the method of computer molecular dynamics, the force acting on each particle is the resultant of all interactions with other atoms in the neighborhood and is obtained as the derivative of an effective many-body potential. Exploiting the pseudopotential approach, in obtaining the appropriate potentials may be very fruitful in the future. In the molecular dynamics example considered here, the conventional sum-of-pairwise-interatomic-potentials (SPP) approximation is …
Date:
May 18, 1981
Creator:
Karo, A.M.
Object Type:
Article
System:
The UNT Digital Library
U.S. Department of State Personnel: Background and Selected Issues for Congress
This report discusses the background and current status of the U.S. Department of State and Foreign Service, as well as issues for Congress to consider in regard to the personnel of these departments.
Date:
May 18, 2018
Creator:
Gill, Cory R.
Object Type:
Report
System:
The UNT Digital Library
Plasma crowbars in cylindrical flux compression experiments
We have done a series of one- and two-dimensional calculations of hard-core Z-pinch flux compression experiments in order to study the effect of a plasma on these systems. These calculations show that including a plasma can reduce the amount of flux lost during the compression. Flux losses to the outer wall of such experiments can be greatly reduced by a plasma conducting sheath which forms along the wall. This conducting sheath consists of a cold, dense high ..beta.., unmagnetized plasma which has enough pressure to balance a large field gradient. Flux which is lost into the center conductor is not effectively stopped by this plasma sheath until late in the implosion, at which time a layer similar to the one formed at the outer wall is created. Two-dimensionl simulations show that flux losses due to arching along the sliding contact of the experiment can be effectively stopped by the formation of a plasma conducting sheath.
Date:
May 18, 1979
Creator:
Suter, L.J.
Object Type:
Article
System:
The UNT Digital Library
Newsmap. Monday, May 18, 1942 : week of May 8 to May 15
Text describes action on various war fronts: Jap advance lines cut -- U.S. bombers in India -- Jap defeat in China -- Tribute to team work -- Tokyo raid confirmed -- Axis attack forecast -- Subs in St. Lawrence -- Plan relief corps -- WAAC bill passes -- State laws 'brake' war -- Deal at Martinique -- Raid Jap settlements -- Peru's president here -- Freight by plane -- Gas rationing starts -- Indies fliers here -- British announce war casualties -- R.A.F. pushes attacks -- Gort to Malta command -- Mission to Africa -- Spring offensive on -- Norway plant wrecked. Large world map is keyed to text and illustrates time zones around the world. Inset map shows German and Russian advances near the Black Sea. Includes photographs: Lt. Gen. Stillwell -- Vice Pres. Wallace -- Lt. Gen. Somervell -- New bombs piled underground awaiting delivery -- Lord Gort -- Russian troop answer the Nazi assault -- British troops practice street fighting tactics. Includes 1 cartoon.
Date:
May 18, 1942
Creator:
[United States]. Army Orientation Course.
Object Type:
Poster
System:
The UNT Digital Library
Combination-Tool.
Patent for a combination tool "specifically adapted for use as a pan or plate lifter or a stove-lid lifter and which may also be used for holding dishes while being washed" (lines 4-7), including illustrations.
Date:
May 18, 1897
Creator:
Swenson, Charles E. & Swenson, Olive C.
Object Type:
Patent
System:
The Portal to Texas History
Ant-Trap.
Patent for a "trap designed to be placed around an ant-hill and adapted to capture ants leaving or returning to the ant-hill." (Lines 11-13) Includes instructions and illustrations.
Date:
May 18, 1897
Creator:
Bond, William Beebe
Object Type:
Patent
System:
The Portal to Texas History
Balance Staff and Wheel for Watches
Patent for an improved design of a balance staff and wheel used for watch repair. The new design allows for an easier repair when replacing a broken staff and decreases the chance that the wheel would be damaged when replacing the staff. Included are instructions and illustrations.
Date:
May 18, 1880
Creator:
Bugbee, George G.
Object Type:
Patent
System:
The Portal to Texas History
Texas Register, Volume 18, Number 38, Pages 3221-3259, May 18, 1993
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:
May 18, 1993
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Register, Volume 15, Number 38, Pages 2777-2832, May 18, 1990
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:
May 18, 1990
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 699, Chapter 143
Bill introduced by the Texas Senate relating to the use of only parts of driver's license and social security numbers in certain court documents.
Date:
May 18, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 336, Chapter 138
Bill introduced by the Texas Senate relating to the notice required for the lease of real property by certain counties when responding to particular emergency circumstances.
Date:
May 18, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 1832, Chapter 144
Bill introduced by the Texas Senate relating to the billing of anatomic pathology services; providing penalties.
Date:
May 18, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 823, Chapter 132
Bill introduced by the Texas House of Representatives relating to the liability of certain licensed or registered professionals for damages arising from certain services provided during an emergency.
Date:
May 18, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 85, Chapter 130
Bill introduced by the Texas House of Representatives relating to credit card marketing activities at postsecondary educational institutions; providing a civil penalty.
Date:
May 18, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 389, Chapter 139
Bill introduced by the Texas Senate relating to the capacity of the permanent school fund bond guarantee program.
Date:
May 18, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 399, Chapter 140
Bill introduced by the Texas Senate relating to postponement of jury service in certain counties.
Date:
May 18, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Concurrent Resolution 51
Concurrent resolution introduced by the Texas Senate and House of Representatives recognizing the Lubbock Independent School District on the occasion of its 100th anniversary.
Date:
May 18, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Concurrent Resolution 54
Concurrent resolution introduced by the Texas Senate and House of Representatives commending the members of the Texas Young Lawyers Association for their service to the community.
Date:
May 18, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Concurrent Resolution 10
Concurrent resolution introduced by the Texas House of Representatives and Senate relating to in memory of Mattie Katherine Bills of Paris, Texas.
Date:
May 18, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History