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EVALUATION OF TEMPORAL VARIATIONS IN HYDRAULIC CAPTURE DUE TO CHANGING FLOW PATTERNS USING MAPPING AND MODELING TECHNIQUES
Robust performance evaluation represents one of the most challenging aspects of groundwater pump-and-treat (P&T) remedy implementation. In most cases, the primary goal of the P&T system is hydraulic containment, and ultimately recovery, of contaminants to protect downgradient receptors. Estimating the extent of hydraulic containment is particularly challenging under changing flow patterns due to variable pumping, boundaries and/or other conditions. We present a systematic approach to estimate hydraulic containment using multiple lines of evidence based on (a) water-level mapping and (b) groundwater modeling. Capture Frequency Maps (CFMs) are developed by particle tracking on water-level maps developed for each available water level data set using universal kriging. In a similar manner, Capture Efficiency Maps (CEMs) are developed by particle tracking on water-levels calculated using a transient groundwater flow model: tracking is undertaken independently for each stress period using a very low effective porosity, depicting the 'instantaneous' fate of each particle each stress period. Although conceptually similar, the two methods differ in their underlying assumptions and their limitations: their use together identifies areas where containment may be reliable (i.e., where the methods are in agreement) and where containment is uncertain (typically, where the methods disagree). A field-scale example is presented to illustrate these …
Date:
April 7, 2011
Creator:
AA, SPILIOTOPOULOS; LC, SWANSON; R, SHANNON & MJ, TONKIN
Object Type:
Article
System:
The UNT Digital Library
Simulation of a Production Facility with an Automated Transport System
A model was needed to assess material throughput and validate the conceptual design of a production facility, including equipment lists and layout. The initial desire was to use a commercially available discrete event simulation package. However, the available software was found to be too limited in capability. Database interface software was used to develop autonomous intelligent manufacturing workstations and material transporters. The initial Extend model used to assess material throughput and develop equipment lists for the preconceptual design effort was upgraded with software add-ons from Simulation Dynamics, Inc. (SDI). Use of the SDI database interface allowed the upgraded model to include: 1. a material mass balance at any level of detail required by the user, and 2. a transport system model that includes all transport system movements, time delays, and transfers between systems. This model will assist in evaluating transport system capacity, sensitive time delays in the system, and optimal operating strategies. An additional benefit of using the SDI database interface is dramatically improved run time performance. This allows significantly more runs to be completed to provide better statistics for overall plant performance. The model has all system and process parameters entered into sub-component accessible tables. All information for the …
Date:
April 7, 2004
Creator:
ABRAMCZYK, GLENN
Object Type:
Report
System:
The UNT Digital Library
Chamber and target technology development for inertial fusion energy
Fusion chambers and high pulse-rate target systems for inertial fusion energy (IFE) must: regenerate chamber conditions suitable for target injection, laser propagation, and ignition at rates of 5 to 10 Hz; extract fusion energy at temperatures high enough for efficient conversion to electricity; breed tritium and fuel targets with minimum tritium inventory; manufacture targets at low cost; inject those targets with sufficient accuracy for high energy gain; assure adequate lifetime of the chamber and beam interface (final optics); minimize radioactive waste levels and annual volumes; and minimize radiation releases under normal operating and accident conditions. The primary goal of the US IFE program over the next four years (Phase I) is to develop the basis for a Proof-of-Performance-level driver and target chamber called the Integrated Research Experiment (IRE). The IRE will explore beam transport and focusing through prototypical chamber environment and will intercept surrogate targets at high pulse rep-rate. The IRE will not have enough driver energy to ignite targets, and it will be a non-nuclear facility. IRE options are being developed for both heavy ion and laser driven IFE. Fig. 1 shows that Phase I is prerequisite to an IRE, and the IRE plus NIF (Phase II) is prerequisite …
Date:
April 7, 1999
Creator:
Abdou, M.; Besenbruch, G.; Duke, J.; Forman, L.; Goodin, D.; Gulec, K. et al.
Object Type:
Report
System:
The UNT Digital Library
[RE: Time for Reform]
Photocopy of a memo from Julie Abel, program associate for the Getty Center for Education in the Arts, to the Regional Institute Directors, Sheila Brown, Phyllis Scott Johnson, Jessie Lovano-Kerr, William McCarter, Joyce Wright, Virginia Gembica, Anne Lindsey, Nancy MacGregor and Susan Rotilie. The memo is in regards to an enclosed copy of the Time for Reform by Susanna Purnell and Paul Hill, published by RAND that Vicki Rosenberg thought the directors would find interesting and beneficial. cc'd on the memo, Jack Davis, Edith Curtis Johnson, Margaret DiBlasio and Nancy Roucher.
Date:
April 7, 1993
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
The Oklahoma Daily (Norman, Okla.), Vol. 18, No. 156, Ed. 1 Friday, April 7, 1933
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes local and campus news along with advertising.
Date:
April 7, 1933
Creator:
Abrams, Samuel K.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Comparison of flight performance of AN-F-58 and AN-F-32 fuels in J35 turbojet engine
Report presenting a flight investigation to determine the comparative performance of AN-F-58 and AN-F-32 fuels in a 4000-pound-thrust turbojet engine. The fuels were equivalent over the range of conditions investigated. Results regarding corrected net thrust, corrected jet-fuel consumption, variation of corrected tail-pipe temperature, combustor blow-out speeds, and visual observations of the jet exhaust are provided.
Date:
April 7, 1949
Creator:
Acker, Loren W. & Kleinknecht, Kenneth S.
Object Type:
Report
System:
The UNT Digital Library
Top physics: measurement of the tt-bar production cross section in p anti-p collisions at s**(1/2) = 1.96 tev using lepton + jets events with secondary vertex b-tagging
We present a measurement of the t{bar t} production cross section using events with one charged lepton and jets from p{bar p} collisions at a center-of-mass energy of 1.96TeV. In these events, heavy flavor quarks from top quark decay are identified with a secondary vertex tagging algorithm. From 162 pb{sup -1} of data collected by the Collider Detector at Fermilab, a total of 48 candidate events are selected, where 13.5 {+-} 1.8 events are expected from background contributions. We measure a t{bar t} production cross section of 5.6{sub -1.1}{sup _1.2}(stat.){sub -0.6}{sup +0.9}(syst.)pb.
Date:
April 7, 2005
Creator:
Acosta, D.
Object Type:
Report
System:
The UNT Digital Library
The Breckenridge American (Breckenridge, Tex.), Vol. 9, No. 132, Ed. 1, Sunday, April 7, 1929
Daily newspaper from Breckenridge, Texas that includes local, state and national news along with extensive advertising.
Date:
April 7, 1929
Creator:
Adair, A. Garland
Object Type:
Newspaper
System:
The Portal to Texas History
Indian Chieftain. (Vinita, Indian Terr.), Vol. 5, No. 30, Ed. 1, Thursday, April 7, 1887
Weekly newspaper from Vinita, Indian Territory. Coverage includes local, territory, and United States news, along with advertising.
Date:
April 7, 1887
Creator:
Adair, John L.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Pawhuska Daily Journal-Capital (Pawhuska, Okla.), Vol. 73, No. 68, Ed. 1 Wednesday, April 7, 1982
Daily newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 7, 1982
Creator:
Adams, Bill
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Pawhuska Daily Journal-Capital (Pawhuska, Okla.), Vol. 74, No. 71, Ed. 1 Thursday, April 7, 1983
Daily newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 7, 1983
Creator:
Adams, Bill
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Harper County Democrat (Buffalo, Okla.), Vol. 10, No. 1, Ed. 1 Friday, April 7, 1916
Weekly newspaper from Buffalo, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 7, 1916
Creator:
Adams, E. Lee
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Production of e+e- Pairs Accompanied by Nuclear Dissociation in Ultra-peripheral Heavy Ion Collisions
We present the first data on e{sup +}e{sup -} pair production accompanied by nuclear breakup in ultra-peripheral gold-gold collisions at a center of mass energy of 200 GeV per nucleon pair. The nuclear breakup requirement selects events at small impact parameters, where higher-order corrections to the pair production cross section should be enhanced. We compare the pair kinematic distributions with two calculations: one based on the equivalent photon approximation, and the other using lowest-order quantum electrodynamics (QED); the latter includes the photon virtuality. The cross section, pair mass, rapidity and angular distributions are in good agreement with both calculations. The pair transverse momentum, p{sub T}, spectrum agrees with the QED calculation, but not with the equivalent photon approach. We set limits on higher-order contributions to the cross section. The e{sup +} and e{sup -} p{sub T} spectra are similar, with no evidence for interference effects due to higher-order diagrams.
Date:
April 7, 2004
Creator:
Adams, J.; Adler, C.; Aggarwal, M. M.; Ahammed, Z.; Allgower, C.; Amonett, J. et al.
Object Type:
Article
System:
The UNT Digital Library
Yoakum Daily Herald (Yoakum, Tex.), Vol. 17, No. 98, Ed. 1 Saturday, April 7, 1923
Daily newspaper from Yoakum, Texas that includes local, state, and national news along with extensive advertising.
Date:
April 7, 1923
Creator:
Adams, W. F., Jr.
Object Type:
Newspaper
System:
The Portal to Texas History
The Edmond Enterprise (Edmond, Okla.), Vol. 27, No. 10, Ed. 1 Thursday, April 7, 1927
Weekly newspaper from Edmond, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 7, 1927
Creator:
Adamson, Royce B.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 31, Ed. 1 Friday, April 7, 1967
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
April 7, 1967
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 11, No. 31, Ed. 1 Friday, April 7, 1967
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
April 7, 1967
Creator:
Addington, Dianne; Brown, Julia & Gilmore, Joyce
Object Type:
Newspaper
System:
The Portal to Texas History
Pawhuska Daily Journal-Capital (Pawhuska, Okla.), Vol. 72, No. 67, Ed. 1 Tuesday, April 7, 1981
Daily newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 7, 1981
Creator:
Adkisson, Larry R.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
A DATA-CENTERED COLLABORATION PORTAL TO SUPPORT GLOBAL CARBON-FLUX ANALYSIS
Carbon-climate, like other environmental sciences, has been changing. Large-scalesynthesis studies are becoming more common. These synthesis studies are often conducted by science teams that are geographically distributed and on datasets that are global in scale. A broad array of collaboration and data analytics tools are now available that could support these science teams. However, building tools that scientists actually use is hard. Also, moving scientists from an informal collaboration structure to one mediated by technology often exposes inconsistencies in the understanding of the rules of engagement between collaborators. We have developed a scientific collaboration portal, called fluxdata.org, which serves the community of scientists providing and analyzing the global FLUXNET carbon-flux synthesis dataset. Key things we learned or re-learned during our portal development include: minimize the barrier to entry, provide features on a just-in-time basis, development of requirements is an on-going process, provide incentives to change leaders and leverage the opportunity they represent, automate as much as possible, and you can only learn how to make it better if people depend on it enough to give you feedback. In addition, we also learned that splitting the portal roles between scientists and computer scientists improved user adoption and trust. The fluxdata.org portal …
Date:
April 7, 2009
Creator:
Agarwal, Deborah A.; Humphrey, Marty; Beekwilder, Norm; Jackson, Keith; Goode, Monte & van Ingen, Catharine
Object Type:
Article
System:
The UNT Digital Library
The Cuero Record (Cuero, Tex.), Vol. 53, No. 86, Ed. 1 Monday, April 7, 1947
Daily newspaper from Cuero, Texas that includes local, state, and national news along with advertising.
Date:
April 7, 1947
Creator:
Aldridge, C. C., Jr.
Object Type:
Newspaper
System:
The Portal to Texas History
The Cuero Record (Cuero, Tex.), Vol. 54, No. 82, Ed. 1 Wednesday, April 7, 1948
Daily newspaper from Cuero, Texas that includes local, state, and national news along with advertising.
Date:
April 7, 1948
Creator:
Aldridge, C. C., Jr.
Object Type:
Newspaper
System:
The Portal to Texas History
[Letter from Craig Alexander to Joseph A. Carroll, April 7, 1856]
Letter from Craig Alexander to Joseph A. Carroll telling him news from Missouri, and asking after Thomas, who went to western Texas and has disappeared.
Date:
April 7, 1856
Creator:
Alexander, Craig
Object Type:
Letter
System:
The Portal to Texas History
[Receipt of List of Clothing, Camp and Garrison Equipage from H. K. Redway, April 7, 1865]
List of clothing, camp and garrison equipage from H. K. Redway to John W. Alexander. Items include: caps, coats, camp kittles.
Date:
April 7, 1865
Creator:
Alexander, John W.
Object Type:
Text
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 20, No. 13, Ed. 1 Thursday, April 7, 2005
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
April 7, 2005
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History