UNT Libraries Government Documents Department - 205 Matching Results

Search Results

open access

2002 Wastewater Land Application Site Performance Reports for the Idaho National Engineering and Environmental Laboratory

Description: The 2002 Wastewater Land Application site Performance Reports for the Idaho National Engineering and Environmental Laboratory describe site conditions for the facilities with State of Idaho Wastewater Land Application Permits. Permit-required monitoring data are summarized, and permit exceedences or environmental impacts relating to the operation of the facilities during the 2002 permit year are discussed.
Date: February 20, 2003
Creator: Meachum, T. R. & Lewis, M. G.
open access

3D Adaptive Mesh Refinement Simulations of Pellet Injection in Tokamaks

Description: We present results of Adaptive Mesh Refinement (AMR) simulations of the pellet injection process, a proven method of refueling tokamaks. AMR is a computationally efficient way to provide the resolution required to simulate realistic pellet sizes relative to device dimensions. The mathematical model comprises of single-fluid MHD equations with source terms in the continuity equation along with a pellet ablation rate model. The numerical method developed is an explicit unsplit upwinding treatment… more
Date: October 20, 2003
Creator: Samtaney, R.; Jardin, S. C.; Colella, P. & Martin, D. F.
open access

4th International Plant Biomechanics Conference Proceedings (Abstracts)

Description: The 4th International Plant Biomechanics Conference facilitated an interdisciplinary exchange between scientists, engineers, and educators addressing the major questions encountered in the field of Plant Biomechanics. Subjects covered by the conference include: Evolution; Ecology; Mechanoreception; Cell Walls; Genetic Modification; Applied Biomechanics of Whole Plants, Plant Products, Fibers & Composites; Fluid Dynamics; Wood & Trees; Fracture Mechanics; Xylem Pressure & Water Transport; Modeli… more
Date: July 20, 2003
Creator: Telewski, Frank W.; Koehler, Lothar H. & Ewers, Frank W.
open access

Abortion: Legislative Response

Description: The primary focus of this issue brief is legislative action in the 108th Congress with respect to abortion. However, discussion of those legislative proposals necessarily involves a brief discussion of the leading U.S. Supreme Court decisions concerning a woman’s right to choose whether to terminate her pregnancy. For a more detailed discussion of the relevant case law, see CRS Report 95-724, Abortion Law Development: A Brief Overview.
Date: March 20, 2003
Creator: Lewis, Karen J.; Shimabukuro, Jon O. & Ely, Dana
open access

Adaptive low mach number simulations of a premixed turbulent laboratory burner

Description: A parallel adaptive low Mach number model is used to study an experimental lean premixed turbulent methane V-flame that is stabilized on a rod spanning the exit plane of a circular nozzle. The fuel is turbulent due to an upstream perforated-plate, and the resulting flame extends downstream of the rod. We present three-dimensional time-dependent simulations of this configuration. The computations incorporate detailed reaction chemistry and transport using a dynamically adaptive block-structured … more
Date: October 20, 2003
Creator: Day, M.S.; Bell, J.B.; Lijewski, M.J.; Johnson, M.; Cheng, R.K. & Shepherd, I.G.
open access

Adaptive low Mach number simulations of nuclear flame microphysics

Description: We introduce a numerical model for the simulation of nuclear flames in Type Ia supernovae. This model is based on a low Mach number formulation that analytically removes acoustic wave propagation while retaining the compressibility effects resulting from nuclear burning. The formulation presented here generalizes low Mach number models used in combustion that are based on an ideal gas approximation to the arbitrary equations of state such as those describing the degenerate matter found in stell… more
Date: March 20, 2003
Creator: Bell, J. B.; Day, M. S.; Rendleman, C. A.; Woosley, S. E. & Zingale, M. A.
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: May 20, 2003
Creator: Copson, Raymond W.
open access

AISI/DOE Technology Roadmap Program: Development of an O2-Enriched Furnace System for Reduced CO2 and NOx Emissions For the Steel Industry

Description: An oxygen-enriched furnace system for reduced CO2 and NOx emission has been developed. The furnace geometry, with a sidewall-mounted burner, was similar to configurations commonly encountered in a steel reheat furnace. The effect of stack oxygen concentration, oxygen enrichment level and air infiltration on fuel savings/CO2 reduction, NOx emissions and scale formation were investigated. The firing rate required to maintain the furnace temperature at 1100 C decreased linearly with increasing oxy… more
Date: January 20, 2003
Creator: Grandmaison, Edward W.; Poirier, David J. & Boyd, Eric
open access

The AmeriFlux Network of Long-Term CO{sub 2} Flux Measurement Stations: Methodology and Intercomparability

Description: A portable flux measurement system has been used within the AmeriFlux network of CO{sub 2} flux measurement stations to enhance the comparability of data collected across the network. No systematic biases were observed in a comparison between portable system and site H, LE, or CO{sub 2} flux values although there were biases observed between the portable system and site measurement of air temperature and PPFD. Analysis suggests that if values from two stations differ by greater than 26% for H, … more
Date: May 20, 2003
Creator: Hollinger, D. Y. & Evans, R. S.
open access

Amtrak Issues in the 108th Congress

Description: This report discusses a number of issues connected with Amtrak that Congress may consider. Amtrak does not earn enough revenue, or receive enough assistance, to cover its operating costs and capital needs. As a result, Amtrak is regularly on the verge of insolvency.
Date: February 20, 2003
Creator: Peterman, D. R.
open access

Applying Agreed-Upon Procedures: Airport and Airway Trust Fund Excise Taxes

Description: Correspondence issued by the General Accounting Office with an abstract that begins "We have performed the procedures contained in the enclosure to this report, which we agreed to perform and with which the Inspector General (IG) concurred, solely to assist it in ascertaining whether the net excise tax revenue distributed to the Airport and Airway Trust Fund (AATF) for the fiscal year ended September 30, 2003, is supported by the underlying records. As agreed, we evaluated fiscal year 2003 acti… more
Date: November 20, 2003
Creator: United States. General Accounting Office.
open access

Applying Agreed-Upon Procedures: Highway Trust Fund Excise Taxes

Description: Correspondence issued by the General Accounting Office with an abstract that begins "The Inspector General (IG) of the Department of Transportation requested that GAO perform procedures to assist the IG's office in ascertaining whether the net excise tax revenue distributed to the Highway Trust Fund (HTF) for the fiscal year ended September 30, 2003, is supported by the underlying records. GAO evaluated fiscal year 2003 activity affecting distributions to the HTF."
Date: November 20, 2003
Creator: United States. General Accounting Office.
open access

The approach curve method for large anode-cathode distances

Description: An important technique used to characterize field emission is the measurement of the emitted current against electric field (IxE). In this work we discuss a procedure for obtaining IxE data based on multiple approach curves. We show that the simulated features obtained for an idealized uniform surface matches available experimental data for small anode-cathode distances, while for large distances the simulation predicts a departure from the linear regime. We also discuss the shape of the approa… more
Date: September 20, 2003
Creator: Mammana, Victor P.; Monteiro, Othon R. & Fonseca, Leo R.C.
open access

Argonne National Laboratory-East summary site environmental report for calendar year 2001.

Description: This report is a summary of the actions taken by Argonne National Laboratory in 2001 to keep the public and environment safe. Over the last year, Argonne has monitored, evaluated, and taken steps to control problems or potential problems on its DuPage County site. The problems that have or might occur are things like spilled or leaked radiological waste, non-radiological wastes or hazardous materials. Argonne is keeping its promise to be a good neighbor, and this report confirms its commitment … more
Date: February 20, 2003
Creator: Golchert, N. W. & Kolzow, R. G.
open access

Armenia, Azerbaijan, and Georgia: Political Developments and Implications for U.S. Interests

Description: The United States recognized the independence of all the former Soviet republics by the end of 1991, including the South Caucasus states of Armenia, Azerbaijan, and Georgia. The United States has fostered these states' ties with the West in part to end the dependence of these states on Russia for trade, security, and other relations. The FREEDOM Support Act of 1992 provides authorization for assistance to the Eurasian states for humanitarian needs, democratization, and other purposes. In the af… more
Date: March 20, 2003
Creator: Nichol, Jim
open access

An Assessment of Energy-Related Career Paths of Senior Industrial Assessment Center Program Alumni

Description: The purpose of this study was to assess the career paths of alumni from the U.S. Department of Energy's Industrial Assessment Center (IAC) program. IAC was originally named the Energy Analysis and Diagnostic Center (EADC) program when it began in association with four schools in 1976. The current IAC program provides funding to 26 engineering colleges, located in centers across the United States, to conduct energy, waste, and productivity assessments for small- to medium-sized manufacturing est… more
Date: October 20, 2003
Creator: Martin, M.A.
open access

Autonomous Control of Nuclear Power Plants

Description: A nuclear reactor is a complex system that requires highly sophisticated controllers to ensure that desired performance and safety can be achieved and maintained during its operations. Higher-demanding operational requirements such as reliability, lower environmental impacts, and improved performance under adverse conditions in nuclear power plants, coupled with the complexity and uncertainty of the models, necessitate the use of an increased level of autonomy in the control methods. In the opi… more
Date: October 20, 2003
Creator: Basher, H.
open access

Aviation Security: Efforts to Measure Effectiveness and Strengthen Security Programs

Description: Testimony issued by the General Accounting Office with an abstract that begins "Commercial aviation has been a long-standing target for terrorists. Since the tragic attacts of September 11, 2001, substantial changes have been made to enhance security--including the creation of the Transportation Security Administration (TSA) and the federalization of the passenger screener workforce. However, despite these changes, vulnerabilities in aviation security continue to exist. Accordingly, GAO was ask… more
Date: November 20, 2003
Creator: United States. General Accounting Office.
open access

BOILER MATERIALS FOR ULTRASUPERCRITICAL COAL POWER PLANTS

Description: The principal objective of this project is to develop materials technology for use in ultrasupercritical (USC) plant boilers capable of operating with 760 C (1400 F), 35 MPa (5000 psi) steam. This project has established a government/industry consortium to undertake a five-year effort to evaluate and develop of advanced materials that allow the use of advanced steam cycles in coal-based power plants. These advanced cycles, with steam temperatures up to 760 C, will increase the efficiency of coa… more
Date: October 20, 2003
Creator: Viswanathan, R.; Coleman, K.; Swindeman, R.W.; Sarver, J.; Blough, J.; Mohn, W. et al.
open access

BOILER MATERIALS FOR ULTRASUPERCRITICAL COAL POWER PLANTS

Description: The principal objective of this project is to develop materials technology for use in ultrasupercritical (USC) plant boilers capable of operating with 760 C (1400 F), 35 MPa (5000 psi) steam. In the 21st century, the world faces the critical challenge of providing abundant, cheap electricity to meet the needs of a growing global population while at the same time preserving environmental values. Most studies of this issue conclude that a robust portfolio of generation technologies and fuels shou… more
Date: January 20, 2003
Creator: Viswanathan, R. & Coleman, K.
open access

Broadband Internet Access and the Digital Divide: Federal Assistance Programs

Description: Some policymakers, believing that disparities in broadband access across American society could have adverse economic and social consequences on those left behind, assert that the federal government should play a more active role to avoid a “digital divide” in broadband access. One approach is for the federal government to provide financial assistance to support broadband deployment in underserved areas. Others, however, believe that federal assistance for broadband deployment is not appropriat… more
Date: February 20, 2003
Creator: Kruger, Lennard G.
Back to Top of Screen