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Aboveground Oil Storage Tanks: More Complete Facility Data Could Improve Implementation of EPA's Spill Prevention Program
A letter report issued by the Government Accountability Office with an abstract that begins "Oil leaks from aboveground tanks have contaminated soil and water, threatening human health and wildlife. To prevent damage from oil spills, the Environmental Protection Agency (EPA) issued the Spill Prevention, Control, and Countermeasure (SPCC) rule in 1973. EPA's 10 regions inspect oil storage facilities to ensure compliance with the rule. EPA estimates that about 571,000 facilities are subject to this rule. Some states also regulate oil storage tanks. GAO determined (1) how EPA regions implement the SPCC program, (2) the data EPA has to implement and evaluate the program, and (3) whether some states' tank programs suggest ways for EPA to improve its program. GAO surveyed all 10 EPA regions and interviewed officials in EPA and six states selected on the basis of experts' recommendations, among other criteria."
Date:
April 30, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Afghanistan: Post-War Governance, Security, and U.S. Policy
This report considers the debate on the efficacy of U.S. efforts to stabilize Afghanistan. Moreover, the report discusses how the Bush Administration's review of the progress resulted as inadequate, and thus ways of changing progress are being considered. The report also discusses the NATO led troops in the region.
Date:
April 30, 2008
Creator:
Katzman, Kenneth
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 109, No. 285, Ed. 1 Wednesday, April 30, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 30, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Archaeological Survey of the City of Weinert's Wastewater Treatment Plant Improvements, Haskell County, Texas
A report of an archaeological survey of the city of Weinert for the proposed modifications to the existing wastewater treatment plant.
Date:
April 30, 2008
Creator:
Todd, Jesse
Object Type:
Report
System:
The Portal to Texas History
The Baryon Anomaly: Evidence for Color Transparency and Direct Hadron Production at RHIC
We show that the QCD color transparency of higher-twist contributions to inclusive hadroproduction cross sections, where baryons are produced directly in a short distance subprocess, can explain several remarkable features of high-p{sub T} baryon production in heavy ion collisions which have recently been observed at RHIC: (a) the anomalous increase of the proton-to-pion ratio with centrality (b): the increased power-law fall-off at fixed x{sub T} = 2p{sub T}/{radical}s of the charged particle production cross section in high centrality nuclear collisions, and (c): the anomalous decrease of the number of same-side hadrons produced in association with a proton trigger as the centrality increases. We show that correlations between opposite-side hyperons and kaons can provide a clear signature of higher-twist contributions. These phenomena emphasize the importance of understanding hadronization at the amplitude level in QCD illustrate how heavy ion collisions can provide sensitive tools for interpreting and testing fundamental properties of QCD.
Date:
April 30, 2008
Creator:
Brodsky, Stanley J. & Sickles, Anne
Object Type:
Article
System:
The UNT Digital Library
Basin Analysis and Petroleum System Characterization and Modeling, Interior Salt Basins, Central and Eastern Gulf of Mexico
None
Date:
April 30, 2008
Creator:
Mancini, Ernest
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 88, No. 120, Ed. 1 Wednesday, April 30, 2008
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
April 30, 2008
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Berry Amendment: Requiring Defense Procurement to Come from Domestic Sources
None
Date:
April 30, 2008
Creator:
Grasso, Valerie Bailey
Object Type:
Report
System:
The UNT Digital Library
The Bureau of Reclamation’s Aging Infrastructure
This report describes Reclamation's approach to managing aging infrastructure as well as that of two other agencies--- the Army Corps of Engineers and the natural Resources Conservative Service--- involved with significant portfolios of dams and related infrastructures.
Date:
April 30, 2008
Creator:
Lane, Nic
Object Type:
Report
System:
The UNT Digital Library
Cherokeean Herald (Rusk, Tex.), Vol. 159, No. 10, Ed. 1 Wednesday, April 30, 2008
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
April 30, 2008
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 113, No. 18, Ed. 1 Wednesday, April 30, 2008
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
April 30, 2008
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Coastal Zone Management: Background and Reauthorization Issues
This report contains background and an overview of the reauthorization issues of the coastal zone management.
Date:
April 30, 2008
Creator:
Upton, Harold F. & Zinn, Jeffrey A.
Object Type:
Report
System:
The UNT Digital Library
The Collegian (Hurst, Tex.), Vol. 20, No. 25, Ed. 1 Wednesday, April 30, 2008
Weekly student newspaper published in Hurst, Texas serving the Tarrant County College District that includes school news and information along with advertising.
Date:
April 30, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Colony Courier-Leader (The Colony, Tex.), Vol. 27, No. 13, Ed. 1 Wednesday, April 30, 2008
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
April 30, 2008
Creator:
Monk, Devin
Object Type:
Newspaper
System:
The Portal to Texas History
Comprehensive Nuclear-Test-Ban Treaty: Background and Current Developments
This report provides a background on the comprehensive Nuclear-Test-Ban treaty and its current developments.
Date:
April 30, 2008
Creator:
Medalia, Jonathan
Object Type:
Report
System:
The UNT Digital Library
COUPLING STATE-OF-THE-SCIENCE SUBSURFACE SIMULATION WITH ADVANCED USER INTERFACE AND PARALLEL VISUALIZATION: SBIR Phase I Final Report
This is a Phase I report on a project to significantly enhance existing subsurface simulation software using leadership-class computing resources, allowing researchers to solve problems with greater speed and accuracy. Subsurface computer simulation is used for monitoring the behavior of contaminants around nuclear waste disposal and storage areas, groundwater flow, environmental remediation, carbon sequestration, methane hydrate production, and geothermal energy reservoir analysis. The Phase I project was a collaborative effort between Thunderhead Engineering (project lead and developers of a commercial pre- and post-processor for the TOUGH2 simulator) and Lawrence Berkeley National Laboratory (developers of the TOUGH2 simulator for subsurface flow). The Phase I project successfully identified the technical approaches to be implemented in Phase II.
Date:
April 30, 2008
Creator:
Hardeman, B.; Swenson, D.; Finsterle, S. & Zhou, Q.
Object Type:
Report
System:
The UNT Digital Library
Current Economic Conditions and Selected Forecasts
This report contains the economic conditions and selected forecasts in the U.S. in 2008.
Date:
April 30, 2008
Creator:
Makinen, Gail E.
Object Type:
Report
System:
The UNT Digital Library
Development of an Advanced Fine Coal Suspension Dewatering Process
With the advancement in fine coal cleaning technology, recovery of fine coal (minus 28 mesh) has become an attractive route for the U.S. coal industry. The clean coal recovered using the advanced flotation technology i.e. column flotation, contains on average 20% solids and 80% water, with an average particle size of 35 microns. Fine coal slurry is usually dewatered using a vacuum dewatering technique, providing a material with about 25 to 30 percent moisture. The process developed in this project will improve dewatering of fine (0.6mm) coal slurry to less than 20 percent moisture. Thus, thermal drying of dewatered wet coal will be eliminated. This will provide significant energy savings for the coal industry along with some environmental benefits. A 1% increase in recovery of coal and producing a filter cake material of less than 20 % moisture will amount to energy savings of 1900 trillion Btu/yr/unit. In terms of the amount of coal it will be about 0.8% of the total coal being used in the USA for electric power generation. It is difficult to dewater the fine clean coal slurry to about 20% moisture level using the conventional dewatering techniques. The finer the particle, the larger the surface …
Date:
April 30, 2008
Creator:
Parekh, B. K. & Patil, D. P.
Object Type:
Report
System:
The UNT Digital Library
DFT and time-resolved IR investigation of electron transfer between photogenerated 17- and 19-electron organometallic radicals
The photochemical disproportionation mechanism of [CpW(CO){sub 3}]{sub 2} in the presence of Lewis bases PR{sub 3} was investigated on the nano- and microsecond time-scales with Step-Scan FTIR time-resolved infrared spectroscopy. 532 nm laser excitation was used to homolytically cleave the W-W bond, forming the 17-electron radicals CpW(CO){sub 3} and initiating the reaction. With the Lewis base PPh{sub 3}, disproportionation to form the ionic products CpW(CO){sub 3}PPh{sub 3}{sup +} and CpW(CO){sub 3}{sup -} was directly monitored on the microsecond time-scale. Detailed examination of the kinetics and concentration dependence of this reaction indicates that disproportionation proceeds by electron transfer from the 19-electron species CpW(CO){sub 3}PPh{sub 3} to the 17-electron species CpW(CO){sub 3}. This result is contrary to the currently accepted disproportionation mechanism which predicts electron transfer from the 19-electron species to the dimer [CpW(CO){sub 3}]{sub 2}. With the Lewis base P(OMe){sub 3} on the other hand, ligand substitution to form the product [CpW(CO){sub 2}P(OMe){sub 3}]{sub 2} is the primary reaction on the microsecond time-scale. Density Functional Theory (DFT) calculations support the experimental results and suggest that the differences in the reactivity between P(OMe){sub 3} and PPh{sub 3} are due to steric effects. The results indicate that radical-to-radical electron transfer is a previously …
Date:
April 30, 2008
Creator:
Cahoon, James B.; Kling, Matthias F.; Sawyer, Karma R.; Andersen, Lars K. & Harris, Charles B.
Object Type:
Article
System:
The UNT Digital Library
Digital Television Transition: Majority of Broadcasters Are Prepared for the DTV Transition, but Some Technical and Coordination Issues Remain
A letter report issued by the Government Accountability Office with an abstract that begins "The Digital Television Transition and Public Safety Act of 2005, requires all full-power television stations in the United States to cease analog broadcasting by February 17, 2009, known as the digital television (DTV) transition. Prior to the transition date, the television broadcast industry must take a series of actions to ensure that over-the-air programming will continue to be available to television households once the transition is complete. For example, broadcast stations must obtain, install, and test the necessary equipment needed to finalize their digital facilities, and some stations will need to coordinate the movement of channels on the day the analog signal ceases transmission. This requested report examines (1) the status of broadcast stations in transitioning to digital, (2) the extent to which broadcast stations are encountering issues, and (3) the actions the Federal Communications Commission (FCC) has taken to guide broadcasters in the digital transition. To address these issues, GAO conducted a Web-based survey of full-power television broadcast stations. GAO surveyed 1,682 stations and obtained completed questionnaires from 1,122 stations, for a response rate of 66.7 percent. GAO also reviewed legal, agency, and industry documents …
Date:
April 30, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Dynamic Analysis of Hanford Unirradiated Fuel Package Subjected to Sequential Lateral Loads in Hypothetical Accident Conditions
Large fuel casks present challenges when evaluating their performance in the Hypothetical Accident Conditions (HAC) specified in the Code of Federal Regulations Title 10 part 71 (10CFR71). Testing is often limited by cost, difficulty in preparing test units and the limited availability of facilities which can carry out such tests. In the past, many casks were evaluated without testing by using simplified analytical methods. This paper presents a numerical technique for evaluating the dynamic responses of large fuel casks subjected to sequential HAC loading. A nonlinear dynamic analysis was performed for a Hanford Unirradiated Fuel Package (HUFP) [1] to evaluate the cumulative damage after the hypothetical accident Conditions of a 30-foot lateral drop followed by a 40-inch lateral puncture as specified in 10CFR71. The structural integrity of the containment vessel is justified based on the analytical results in comparison with the stress criteria, specified in the ASME Code, Section III, Appendix F [2], for Level D service loads. The analyzed cumulative damages caused by the sequential loading of a 30-foot lateral drop and a 40-inch lateral puncture are compared with the package test data. The analytical results are in good agreement with the test results.
Date:
April 30, 2008
Creator:
Wu, T.
Object Type:
Article
System:
The UNT Digital Library
Environmental Biosciences Program Quarterly Report
None
Date:
April 30, 2008
Creator:
Mohr, Lawrence C.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of BOC'S Lotox Process for the Oxidation of Elemental Mercury in Flue Gas from a Coal-Fired Boiler
Linde's Low Temperature Oxidation (LoTOx{trademark}) process has been demonstrated successfully to remove more than 90% of the NOx emitted from coal-fired boilers. Preliminary findings have shown that the LoTOx{trademark} process can be as effective for mercury emissions control as well. In the LoTOx{trademark} system, ozone is injected into a reaction duct, where NO and NO{sub 2} in the flue gas are selectively oxidized at relatively low temperatures and converted to higher nitrogen oxides, which are highly water soluble. Elemental mercury in the flue gas also reacts with ozone to form oxidized mercury, which unlike elemental mercury is water-soluble. Nitrogen oxides and oxidized mercury in the reaction duct and residual ozone, if any, are effectively removed in a wet scrubber. Thus, LoTOx{trademark} appears to be a viable technology for multi-pollutant emission control. To prove the feasibility of mercury oxidation with ozone in support of marketing LoTOx{trademark} for multi-pollutant emission control, Linde has performed a series of bench-scale tests with simulated flue gas streams. However, in order to enable Linde to evaluate the performance of the process with a flue gas stream that is more representative of a coal-fired boiler; one of Linde's bench-scale LoTOx{trademark} units was installed at WRI's combustion test …
Date:
April 30, 2008
Creator:
Omar, Khalid
Object Type:
Report
System:
The UNT Digital Library
Experimental Investigation and High Resolution Simulation of In-Situ Combustion Processes
This final technical report describes work performed for the project 'Experimental Investigation and High Resolution Numerical Simulator of In-Situ Combustion Processes', DE-FC26-03NT15405. In summary, this work improved our understanding of in-situ combustion (ISC) process physics and oil recovery. This understanding was translated into improved conceptual models and a suite of software algorithms that extended predictive capabilities. We pursued experimental, theoretical, and numerical tasks during the performance period. The specific project objectives were (i) identification, experimentally, of chemical additives/injectants that improve combustion performance and delineation of the physics of improved performance, (ii) establishment of a benchmark one-dimensional, experimental data set for verification of in-situ combustion dynamics computed by simulators, (iii) develop improved numerical methods that can be used to describe in-situ combustion more accurately, and (iv) to lay the underpinnings of a highly efficient, 3D, in-situ combustion simulator using adaptive mesh refinement techniques and parallelization. We believe that project goals were met and exceeded as discussed.
Date:
April 30, 2008
Creator:
Gerritsen, Margot & Kovscek, Tony
Object Type:
Report
System:
The UNT Digital Library