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3-D Cavern Enlargement Analyses

Description: Three-dimensional finite element analyses simulate the mechanical response of enlarging existing caverns at the Strategic Petroleum Reserve (SPR). The caverns are located in Gulf Coast salt domes and are enlarged by leaching during oil drawdowns as fresh water is injected to displace the crude oil from the caverns. The current criteria adopted by the SPR limits cavern usage to 5 drawdowns (leaches). As a base case, 5 leaches were modeled over a 25 year period to roughly double the volume of a 1… more
Date: March 1, 2002
Creator: EHGARTNER, BRIAN L. & SOBOLIK, STEVEN R.
Item Type: Refine your search to only Report
open access

100-Picometer Interferometry for EUVL

Description: Future extreme ultraviolet lithography (EWL) steppers will, in all likelihood, have six-mirror projection cameras. To operate at the diffraction limit over an acceptable depth of focus each aspheric mirror will have to be fabricated with an absolute figure accuracy approaching 100 pm rms. We are currently developing visible light interferometry to meet this need based on modifications of our present phase shifting diffraction interferometry (PSDI) methodology where we achieved an absolute accur… more
Date: March 18, 2002
Creator: Sommargren, G. E.; Phillion, D. W.; Johnson, M. A.; Nguyen, N. O.; Barty, A.; Snell, F. J. et al.
Item Type: Refine your search to only Article
open access

2000 Census: Coverage Evaluation Matching Implemented as Planned, but Census Bureau Should Evaluate Lessons Learned

Description: A letter report issued by the General Accounting Office with an abstract that begins "The U.S. Census Bureau conducted the Accuracy and Coverage Evaluation (ACE) survey to estimate the number of people missed, counted more than once, or otherwise improperly counted in the 2000 Census. On the basis of uncertainty in the ACE results, the Bureau's acting director decided that the 2000 Census tabulations should not be adjusted in order to redraw the boundaries of congressional districts or to distr… more
Date: March 14, 2002
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
open access

21st Century Community Learning Centers in P.L. 107-110: Background and Funding

Description: Most Elementary and Secondary Education Act (ESEA) programs, including the 21st Century Community Learning Centers (21st CCLC) program, expired at the end of FY2000.1 Included in the No Child Left Behind Act is the reauthorization of the 21st CCLC, with, a new location (Title IV, Part B, 21st Century Schools), and several substantive changes. On December 13 and 18, 2001, respectively, the House and Senate adopted the conference version of H.R. 1, The No Child Left Behind Act. The President sign… more
Date: March 4, 2002
Creator: McCallion, Gail
Item Type: Refine your search to only Report
open access

235U Holdup Measurements in the 321-M Exhaust Elbows

Description: The Analytical Development Section of Savannah River Technology Center (SRTC) was requested by the Facilities Disposition Division (FDD) to determine the holdup of enriched uranium in the 321-M facility as part of an overall deactivation project of the facility. The 321-M facility was used to fabricate enriched uranium fuel assemblies, lithium-aluminum target tubes, neptunium assemblies, and miscellaneous components for the production reactors. The facility also includes the 324-M storage build… more
Date: March 22, 2002
Creator: Salaymeh, S.R.
Item Type: Refine your search to only Report
open access

Aberration correction for analytical in situ TEM - the NTEAM concept.

Description: Future aberration corrected transmission electron microscopes (TEM) will have a strong impact in materials science, since such microscopes yield information on chemical bonding and structure of interfaces, grain boundaries and lattice defects at an atomic level. Beyond this aberration correction offers new possibilities for in situ experiments performed under controlled temperature, magnetic field, strain etc. at atomic resolution. Such investigations are necessary for solving problems arising … more
Date: March 5, 2002
Creator: Kabius, B.; Allen, C. W. & Miller, D. J.
Item Type: Refine your search to only Article
open access

Adsorption of Pure Methane, Nitrogen, and Carbon Dioxide and Their Mixtures on San Juan Basin Coal

Description: The major objectives of this project were to (a) measure the adsorption behavior of pure methane, nitrogen, CO{sub 2} and their binary and ternary mixtures on wet Tiffany coal at 130 F and pressures to 2000 psia; (b) correlate the equilibrium adsorption isotherm data using the extended Langmuir model, the Langmuir model, the loading ratio correlation and the Zhou-Gasem-Robinson equation of state; and (c) establish sorption-time estimates for the pure components. Specific accomplishments are sum… more
Date: March 1, 2002
Creator: Gasem, K. A. M.; Robinson, R. L. & Reeves, S. R.
Item Type: Refine your search to only Report
open access

Advanced Reservoir Characterization and Development through High-Resolution 3C3D Seismic and Horizontal Drilling: Eva South Marrow Sand Unit, Texas County, Oklahoma

Description: The Eva South Morrow Sand Unit is located in western Texas County, Oklahoma. The field produces from an upper Morrow sandstone, termed the Eva sandstone, deposited in a transgressive valley-fill sequence. The field is defined as a combination structural stratigraphic trap; the reservoir lies in a convex up -dip bend in the valley and is truncated on the west side by the Teepee Creek fault. Although the field has been a successful waterflood since 1993, reservoir heterogeneity and compartmentali… more
Date: March 11, 2002
Creator: Wheeler,David M.; Miller, William A. & Wilson, Travis C.
Item Type: Refine your search to only Report
open access

ADVANCED TURBINE SYSTEMS PROGRAM

Description: The market for power generation equipment is undergoing a tremendous transformation. The traditional electric utility industry is restructuring, promising new opportunities and challenges for all facilities to meet their demands for electric and thermal energy. Now more than ever, facilities have a host of options to choose from, including new distributed generation (DG) technologies that are entering the market as well as existing DG options that are improving in cost and performance. The mark… more
Date: March 1, 2002
Creator: Ali, Sy
Item Type: Refine your search to only Report
open access

Africa: U.S. Foreign Assistance Issues

Description: This report discusses the issue of U.S. economic assistance to sub-Saharan Africa, highlighting the importance of continued assistance in light of U.S. national security and also various U.S.-led efforts to promote reform amongst African citizens themselves. U.S. assistance finds its way to Africa through a variety of channels, including the USAID-administered DA program, food aid programs, and indirect aid provided through international financial institutions and the United Nations.
Date: March 29, 2002
Creator: Copson, Raymond W.
Item Type: Refine your search to only Report
open access

Agricultural Conservation: Survey of USDA State Technical Committee Members

Description: A letter report issued by the General Accounting Office with an abstract that begins "This report presents the views of members of state technical committees on (1) the effectiveness of USDA's conservation efforts in addressing environmental concerns related to agriculture, (2) any program elements that hinder the achievement of related environmental objectives, and (3) any program characteristics that current or new programs might include to better meet these objectives. GAO summarizes the res… more
Date: March 1, 2002
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
open access

Agricultural Trade Issues in the 107th Congress

Description: The 107th Congress is considering trade issues with implications for the U.S. agricultural sector. Trade in agricultural commodities and food products affects farm income and rural employment, and it also generates economic activity beyond the farm gate. With agricultural export sales the equivalent of one-quarter of farm income, some policymakers view U.S. efforts to develop market opportunities overseas as vital to the sector’s financial health. Decisions taken by the Bush Administration, and… more
Date: March 13, 2002
Creator: Hanrahan, Charles E.; Becker, Geoffrey S. & Jurenas, Remy
Item Type: Refine your search to only Report
open access

AIDS in Africa

Description: Sub-Saharan Africa has been far more severely affected by AIDS than any other part of the world. The United Nations reports that 25.3 million adults and children are infected with the HIV virus in the region, which has about 10% of the world's population but more than 70% of the worldwide total of infected people. This report discusses this issue in detail, including the cause of the African AIDS epidemic, the social and economic consequences, response and treatment, and U.S. policy.
Date: March 8, 2002
Creator: Copson, Raymond W.
Item Type: Refine your search to only Report
open access

Air Quality and Electricity: Initiatives to Increase Pollution Controls

Description: This report discusses air quality initiatives (such as the Ozone Transport Rule) that primarily focus on reducing and enforcing emissions from coal-fired electric generating utilities in the Midwest and South. The report also addresses various legislative activity that focuses on multi-pollutant strategies as an alternative to these piecemeal initiatives.
Date: March 19, 2002
Creator: Parker, Larry & Blodgett, John E.
Item Type: Refine your search to only Report
open access

Air Quality: TVA Plans to Reduce Air Emissions Further, but Could Do More to Reduce Power Demand

Description: A letter report issued by the General Accounting Office with an abstract that begins "The Tennessee Valley Authority (TVA) relied on its 11 coal-burning plants to supply 60 percent of its electric power in fiscal year 2001. These plants account for almost all of TVA's emissions of two key air pollutants--sulfur dioxide (SO2), which has been linked to reduced visibility, and nitrogen oxides (NOx), which contribute to the formation of harmful ozone. To meet an increase in demand of 1.7 percent an… more
Date: March 8, 2002
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
open access

Air tightness of new houses in the U.S.: A preliminary report

Description: Most dwellings in the United States are ventilated primarily through leaks in the building shell (i.e., infiltration) rather than by whole-house mechanical ventilation systems. Consequently, quantification of envelope air-tightness is critical to determining how much energy is being lost through infiltration and how much infiltration is contributing toward ventilation requirements. Envelope air tightness and air leakage can be determined from fan pressurization measurements with a blower door. … more
Date: March 1, 2002
Creator: Sherman, Max H. & Matson, Nance E.
Item Type: Refine your search to only Report
open access

ALE3D Model Predictions and Materials Characterization for the Cookoff Response of PBXN-109

Description: ALE3D simulations are presented for the thermal explosion of PBXN-109 (RDX, AI, HTPB, DOA) in support of an effort by the U. S. Navy and Department of Energy (DOE) to validate computational models. The U.S. Navy is performing benchmark tests for the slow cookoff of PBXN-109 in a sealed tube. Candidate models are being tested using the ALE3D code, which can simulate the coupled thermal, mechanical, and chemical behavior during heating, ignition, and explosion. The strength behavior of the solid … more
Date: March 19, 2002
Creator: McClelland, M. A.; Maienschein, J. L.; Nichols, A. L.; Wardell, J. F.; Atwood, A. I. & Curran, P. O.
Item Type: Refine your search to only Article
open access

Alternative Fuels and Chemicals From Synthesis Gas Technical Progress Report: Number 30

Description: The overall objectives of this program are to investigate potential technologies for the conversion of synthesis gas to oxygenated and hydrocarbon fuels and industrial chemicals, and to demonstrate the most promising technologies at DOE's LaPorte, Texas, Slurry Phase Alternative Fuels Development Unit (AFDU). The program will involve a continuation of the work performed under the Alternative Fuels from Coal-Derived Synthesis Gas Program and will draw upon information and technologies generated … more
Date: March 31, 2002
Item Type: Refine your search to only Report
open access

Alternative implementations of the Monte Carlo power method.

Description: We compare nominal efficiencies, i.e. variances in power shapes for equal running time, of different versions of the Monte Carlo eigenvalue computation, as applied to criticality safety analysis calculations. The two main methods considered here are ''conventional'' Monte Carlo and the superhistory method, and both are used in criticality safety codes. Within each of these major methods, different variants are available for the main steps of the basic Monte Carlo algorithm. Thus, for example, d… more
Date: March 18, 2002
Creator: Blomquist, R.N. & Gelbard, E.M.
Item Type: Refine your search to only Report
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