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574
Large Plate Lysimeter Efficiency for Collecting Water Transported from Soil to Ground Water
A large, zero-tension, plate lysimeter (3.05 x 2.13 m) was installed to intercept percolating soil water at Bikini Atoll (11 35'N, 165 25'E), a former nuclear test-site. In two experiments controlled amounts of irrigation water were applied over the lysimeter and leachate water was collected. Evapotranspiration (ET) calculations were made using the Penman-Monteith equation and climate data collected at the atoll. The efficiency of the lysimeter was essentially 100% in contrast to low efficiencies reported for smaller plate lysimeters. Lysimeter design, installation, and water balance results are discussed.
Date:
April 14, 2004
Creator:
Robison, W. L.; Stone, E. L. & Hamilton, T. F.
Object Type:
Article
System:
The UNT Digital Library
Improved Operation and Modeling of the SSPX Spheromak
None
Date:
April 14, 2004
Creator:
Wood, R.; Cohen, B.; Cohen, R.; Hill, D.; Hooper, E.; LoDestro, L. et al.
Object Type:
Article
System:
The UNT Digital Library
A high-resolution compact Johann crystal spectrometer with the Livermore electron beam ion trap.
A compact high-resolution ({lambda}/{Delta}{lambda} {approx} 10000) spherically bent crystal spectrometer in the Johann geometry was recently installed and tested on the Lawrence Livermore National Laboratory SuperEBIT electron beam ion trap. The curvature of the mica (002) crystal grating allows for higher collection efficiency compared to the flat and cylindrically bent crystal spectrometers commonly used on the Livermore electron beam ion traps. The spectrometer's Johann configuration enables orientation of its dispersion plane to be parallel to the electron beam propagation. Used in concert with a crystal spectrometer, whose dispersion plane is perpendicular to the electron beam propagation, the polarization of x-ray emission lines can be measured.
Date:
April 14, 2004
Creator:
Robbins, D. L.; Chen, H.; Beiersdorfer, P.; Faenov, A. Y.; Pikuz, T. A.; May, M. J. et al.
Object Type:
Article
System:
The UNT Digital Library
ITER Model Coil Tests Overview: Nb3Sn Strand Properties in Cable-in-Conduit-Conductors
During the ITER Model Coil Program two large coils and three Insert coils were built and tested. The test campaigns provided very valuable data on the Conductor in Conduit Cable (CICC) properties. The tests showed that the Nb3Sn strands in CICC behave differently than so-called witness strands, which underwent the same heat treatment. The paper describes Volt-temperature characteristics (VTC) and Volt-Ampere characteristics (VAC) measured in the tests, presents comparisons with the witness strands, and interprets the test results.
Date:
April 14, 2003
Creator:
Martovetsky, N. N.
Object Type:
Article
System:
The UNT Digital Library
A Review of the U.S. Department of Energy's Inertial Fusion Energy Program
None
Date:
April 14, 2004
Creator:
Linford, R K
Object Type:
Article
System:
The UNT Digital Library
AB INITIO AND CALPHAD THERMODYNAMICS OF MATERIALS
Ab initio electronic structure methods can supplement CALPHAD in two major ways for subsequent applications to stability in complex alloys. The first one is rather immediate and concerns the direct input of ab initio energetics in CALPHAD databases. The other way, more involved, is the assessment of ab initio thermodynamics {acute a} la CALPHAD. It will be shown how these results can be used within CALPHAD to predict the equilibrium properties of multi-component alloys.
Date:
April 14, 2004
Creator:
Turchi, P A
Object Type:
Article
System:
The UNT Digital Library
Longitudinal Gluon Polarization in RHIC Double-Spin Asymmetries
The longitudinally polarized gluon density is probed sensitively in hard collisions of polarized protons under the condition that the dominant dynamics are perturbative and of leading twist origin. First data have recently been presented by PHENIX on the double-spin asymmetry A{sub LL}{sup {pi}} for {pi}{sup 0} production at moderate transverse momentum p {perpendicular} {approx_equal} 1 {divided_by} 4 GeV and central rapidity. By means of a systematic investigation of the relevant degrees of freedom we show that the perturbative QCD framework at leading power in p{perpendicular} produces an asymmetry that is basically positive definite in this kinematic range, i.e. A{sub LL}{sup {pi}} {approx}> {Omicron}(-10{sup -3}).
Date:
April 14, 2004
Creator:
Jager, B.; Stratmann, M.; Kretzer, S. & Vogelsang, W.
Object Type:
Article
System:
The UNT Digital Library
NEUTRINO-PRODUCTION OF CHARM AND THE STRANGENESS ASYMMETRY OF THE NUCLEON.
Interest in the strange nucleon sea has been renewed when it was realized that the strangeness asymmetry s{sup -} = s - {bar s} plays a prominent role in the interpretation of the NuTeV weak mixing angle anomaly. The author reviews the NLO QCD calculation of the neutrino-production of opposite-sign dimuons as the experimental signature of the strange quark parton density. Results from a recent CTEQ fit are presented and discussed with respect to their stability under NLO corrections and their impact on the NuTeV measurement.
Date:
April 14, 2004
Creator:
KRETZER,S.
Object Type:
Article
System:
The UNT Digital Library
Evaluating Progress on TARP Foreclosure Mitigation Problems
April report of the U.S. Congressional Oversight Panel describing their activities and findings regarding the state of the U.S. Treasury's mitigation programs in addition to an overview of the economy and housing markets.
Date:
April 14, 2010
Creator:
United States. Congressional Oversight Panel.
Object Type:
Report
System:
The UNT Digital Library
Texas Disease Prevention News, Volume 57, Number 8, April 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:
April 14, 1997
Creator:
Texas. Department of Health.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Preventable Disease News, Volume 44, Number 15, April 14, 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:
April 14, 1984
Creator:
Texas. Bureau of Disease Control and Epidemiology.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Thermophysical measurements on liquid metals above 4000 K
Thermophysical data are presented for liquid niobium up to approximately 6000/sup 0/K and for liquid lead up to approximately 5000/sup 0/K. These new results are summarized along with previously obtained high temperature data for liquid molybdenum, tantalum, tungsten, and uranium.
Date:
April 14, 1977
Creator:
Shaner, J. W.; Gathers, G. R. & Hodgson, W. M.
Object Type:
Article
System:
The UNT Digital Library
Limitations of rock mechanics in energy-resource recovery and development
Rock-mechanics problems which limit energy-resource recovery and development are assessed. The most serious limitations were found in the fields of geothermal exploration, mining and in-situ recovery, nuclear-waste disposal, oil and gas recovery, underground storage, and under-ocean tunneling. Recommendations include research to determine and predict porosity, permeability, and fluid flow in situ; research to develop better methods for determining and obtaining shallow and deep in situ stresses; research to improve the ability to map fracture patterns, particularly major fractures and faults, at depth; research to improve the understanding of rock-fragmentation processes for increasing the effectiveness of drilling and excavation systems; research to increase understanding of the relation of laboratory-measured quantities to in situ conditions; and research to provide the thermophysical and thermomechanical properties of rock, including fractured rock. (JRD)
Date:
April 14, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Masses of the Heavy Isotopes
Radioactive decay data are used to calculate the atomic masses of the heavy isotopes, A> 203. The four radioactive families are then connected by means of neutron binding energies known from reactions on various isotopes. Finally all the masses are collectively adjusted for the best fit with mass spectrographic information available in this region. The masses so calculated are presented. Differences between masses of isotopes are estimated to have an of (plus/minus) 0.00020 mas units or about 200 Kev; the position of the masses taken collectively is in doubt by about 1.5 Mev.
Date:
April 14, 1952
Creator:
Stern, Martin O.
Object Type:
Report
System:
The UNT Digital Library
Equilibria in the Oxide Systems of Praseodymium and Americium
The thermal decomposition of the higher oxides of praseodymium and americium have been investigated.
Date:
April 14, 1949
Creator:
Asprey, L. B. & Cunningham, Burris Bell, 1912-1971
Object Type:
Report
System:
The UNT Digital Library
Preliminary Report on the Green River Desert Area, Utah
Technical report on the geological investigation of the Green River desert area, Utah, studying uranium deposits in the area.
Date:
April 14, 1952
Creator:
Morehouse, George E.
Object Type:
Report
System:
The UNT Digital Library
Photography Exposure Meter
Patent for a Photography Exposure Meter, whereby the correct exposures may be obtained in the taking of pictures irrespective of weather conditions and the period of the day.
Date:
April 14, 1918
Creator:
Cady, Silas J.
Object Type:
Patent
System:
The Portal to Texas History
Effects of Metal Purity and Heat Treatment on the Corrosion of Uranium in Boiling Water
Corrosion rates of present reactor grade uranium were measured in boiling distilled water and were found to have higher values almost by a factor of two then previously reported corrosion rates of uranium. Mallinckrodt biscuit metal showed corrosion rates in the same medium somewhat lower than reactor grade uranium, and high purity metal prepared at Argonne National Laboratory corroded considerably less rapidly than the biscuit metal.
Date:
April 14, 1953
Creator:
Draley, Joseph Edward, 1919- & McWhirter, J. W.
Object Type:
Report
System:
The UNT Digital Library
The Pile Safety Circuit
The present report is concerned with the electronic relay which, upon the reaching of a pre-determined value of ionization current in the associated chamber, actuates the safety rod release mechanism. The are here proposed two independent suggestions: (1) An improved trip circuit of such sensitivity and stability as to allow it to be actuated by a signal directly from the chamber without the necessity of interposing intermediate amplifier stages. The value of chamber current at which tripping occurs is stable to +- 0.4%. (2) A triple-wound relay to prevent shut-downs of the pile which would otherwise be caused by development of defects in the safety circuits.
Date:
April 14, 1944
Creator:
Nierman, Leonard G.
Object Type:
Report
System:
The UNT Digital Library
Calculation of the Temperature Distribution in a Slug With a Solid Aluminum Cap
Calculations were made to determine the temperature at various points of a thick disc and cap, on the assumptions that the heat production rate is uniform throughout the slug and that the slug is in perfect thermal contact with the cap. Results obtained by different methods of computation are compared with each other and with results obtained by Drew on the Paschkis electrical network computer at Columbia University.
Date:
April 14, 1944
Creator:
Murray, F. H.; Karush, William; Ginsburg, M. & Young, G.
Object Type:
Report
System:
The UNT Digital Library
The Stability of Three Base Metal Thermocouples in Helium-Carbon Dioxide, Carbon Dioxide and Air at 300 C
In support of an in-reactor thermocouple stability testing program now in progress, laboratory studies were made relative to the stability of thermocouple bundles similar to those projected for in-reactor use. Two sets of chromel-alumel, copper-constantan and iron-constantan thermocouples were held for extended periods at 300 C in successive atmospheres of 75% helium-25% carbon dioxide. 100% carbon dioxide and air. Thermocouple stability was verified by measuring emf's at the freezing point of lead. The results of these tests are to be used to evaluate data obtained from like thermocouples subjected to condition similar to the laboratory tests with the added facet of reactor irradiation.
Date:
April 14, 1959
Creator:
Sako, J. H.
Object Type:
Report
System:
The UNT Digital Library
Texas Register, Volume 48, Number 15, Pages 1893-2016 April 14, 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:
April 14, 2023
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History