UNT Libraries Government Documents Department - 401 Matching Results

Search Results

Results: 1 - 24 next
open access

Absorbed XFEL Dose in the Components of the LCLS X-Ray Optics

Description: There is great concern that the short, intense XFEL pulse of the LCLS will damage the optics that will be placed into the beam. We have analyzed the extent of the problem by considering the anticipated materials and position of the optical components in the beam path, calculated the absorbed dose as a function of photon energy, and compared these doses with the expected doses required (i) to observe rapid degradation due to thermal fatigue, (ii) to reach the melting temperature, or (iii) to act… more
Date: December 3, 2010
Creator: Hau-Riege, Stefan
Item Type: Refine your search to only Report
open access

Addendum 1 to CSER 78-001 PWR Core 2 Blanket Fuel Storage Cell 4 221T building

Description: Irradiated pressurized water reactor (PWR) Core 2 (PWR-2) blanket fuel assemblies from the Shippingport PWR have been stored in the 221-T canyon water pool for twenty years. The fuel is in the form of small wafers of UO{sub 2}, which were initially natural enriched uranium (0.72% {sup 235}U). The uranium oxide wafers have a pyrolytic carbon coating, which prevents the fuel from reacting with a zircaloy-4 grid which provides structural strength and holds the wafers in place to form fuel plates. … more
Date: December 3, 1999
Creator: Goldberg, H. J.
Item Type: Refine your search to only Report
open access

Adjoint-Based Implicit Uncertainty Analysis for Figures of Merit in a Laser Inertial Fusion Engine

Description: A primary purpose of computational models is to inform design decisions and, in order to make those decisions reliably, the confidence in the results of such models must be estimated. Monte Carlo neutron transport models are common tools for reactor designers. These types of models contain several sources of uncertainty that propagate onto the model predictions. Two uncertainties worthy of note are (1) experimental and evaluation uncertainties of nuclear data that inform all neutron transport m… more
Date: December 3, 2010
Creator: Seifried, J. E.; Fratoni, M.; Kramer, K. J.; Latkowski, J. F.; Peterson, P. F.; Powers, J. J. et al.
Item Type: Refine your search to only Article
open access

Adopting A Long-Term Budget Focus: Challenges and Proposals

Description: This report focuses on the current federal budget process, including criticisms of that process. This report will provide information on (1) the current horizons used in the budget process, including already existing long-term components; (2) the rationale for increased focus on longterm budgeting; (3) general challenges to long-term budgeting; and (4) an analysis of general proposals that have been made to increase the focus of long-term budgeting in the budget process.
Date: December 3, 2010
Creator: Lynch, Megan Suzanne; Labonte, Marc & Levit, Mindy R.
Item Type: Refine your search to only Report
open access

Advanced Emissions Control Development Program

Description: McDermott Technology, Inc. (MTI) is conducting a five-year project aimed at the development of practical, cost-effective strategies for reducing the emissions of hazardous air pollutants (commonly called air toxics) from coal-fired electric utility plants. The need for air toxic emissions controls may arise as the U. S. Environmental Protection Agency proceeds with implementation of Title III of the Clean Air Act Amendment (CAAA) of 1990. Data generated during the program will provide utilities… more
Date: December 3, 1998
Creator: Holmes, M. J.
Item Type: Refine your search to only Report
open access

Advanced Emissions Control Development Program

Description: Babcock & Wilcox (B&W) is conducting a five-year project aimed at the development of practical, cost-effective strategies for reducing the emissions of hazardous air pollutants (commonly called air toxics) from coal-fired electric utility plants. The need for air toxic emissions controls may arise as the U. S. Environmental Protection Agency proceeds with implementation of Title III of the Clean Air Act Amendment (CAAA) of 1990. Data generated during the program will provide utilities with the … more
Date: December 3, 1998
Creator: Evans, A. P.
Item Type: Refine your search to only Report
open access

Advanced Emissions Control Development Program

Description: McDermott Technology, Inc. (MTI) is conducting a five-year project aimed at the development of practical, cost-effective strategies for reducing the emissions of hazardous air pollutants (commonly called air toxics) from coal-fired electric utility plants. The need for air toxic emissions controls may arise as the U. S. Environmental Protection Agency proceeds with implementation of Title III of the Clean Air Act Amendment (CAAA) of 1990. Data generated during the program will provide utilities… more
Date: December 3, 1998
Creator: Holmes, M. J.
Item Type: Refine your search to only Report
open access

Advanced Emissions Control Development Program

Description: McDermott Technology, Inc. (MTI) is conducting a five-year project aimed at the development of practical, cost-effective strategies for reducing the emissions of hazardous air pollutants (commonly called air toxics) from coal-fired electric utility plants. The need for air toxic emissions controls may arise as the U. S. Environmental Protection Agency proceeds with implementation of Title III of the Clean Air Act Amendment (CAAA) of 1990. Data generated during the program will provide utilities… more
Date: December 3, 1998
Creator: Evans, A. P.
Item Type: Refine your search to only Report
open access

Aerodynamic characteristics at Mach number of 4.06 of a typical supersonic airplane model using body and vertical-tail wedges to improve directional stability

Description: Report presenting an investigation at Mach number 4.06 on a typical supersonic airplane model with a 40 degree sweptback wing. The purpose of the investigation was to determine the effectiveness of using wedges on the body and on the vertical tail to increase the static directional stability. Results regarding the longitudinal characteristics and lateral characteristics are provided.
Date: December 3, 1957
Creator: Dunning, Robert W.
Item Type: Refine your search to only Report
open access

Aerodynamic characteristics at subsonic and supersonic Mach numbers of a thin triangular wing of aspect ratio 2 2: maximum thickness at midchord

Description: "The lift, drag, and pitching-moment characteristics of a triangular wing, having an aspect ratio of 2 and a symmetrical double-wedge profile of 5-percent-chord maximum thickness at midchord, have been evaluated from wind-tunnel tests at Mach numbers from 0.50 to 0.975 and from 1.09 to 1.49 and at Reynolds numbers ranging from 0.67 to 0.85 million. The lift, drag, and pitching-moment coefficients of the triangular wing with a leading-edge sweepback of approximately 63 degrees did not exhibit th… more
Date: December 3, 1948
Creator: Walker, Harold J. & Berggren, Robert E.
Item Type: Refine your search to only Report
open access

Aerodynamic Characteristics of a Model of an Escape Capsule for a Supersonic Bomber-Type Airplane at a Mach Number of 2.49

Description: Report discussing an investigation of the aerodynamic characteristics of a model of an escape capsule with and without stabilizing fins for a supersonic bomber-type airplane. Lift, drag, longitudinal and lateral stability characteristics, and photographs of the capsule model are presented.
Date: December 3, 1957
Creator: Presnell, John G., Jr.
Item Type: Refine your search to only Report
open access

Afghanistan: Current Issues and U.S. Policy

Description: The United States and its allies are helping Afghanistan emerging from more than 22 years of warfare, although substantial risk to Afghan stability remains. Before the U.S. military campaign against the orthodox Islamist Taliban movement began on October 7, 2001, Afghanistan had been mired in conflict since the Soviet invasion of Afghanistan in 1979. The defeat of the Taliban has enabled the United States and its coalition partners to send forces throughout Afghanistan to search for Taliban and… more
Date: December 3, 2002
Creator: Katzman, Kenneth
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: December 3, 2002
Creator: Copson, Raymond W.
Item Type: Refine your search to only Report
open access

Age changes in human bone: an overview

Description: The human skeleton steadily changes structure and mass during life because of a variety of internal and external factors. Extracellular substance and bone cells get old, characteristic structural remodeling occurs with age and these age-related changes are important in the discrimination between pathological and physiological changes. Perhaps 20 percent of the bone mass is lost between the fourth and the ninth decades, osteoblasts function less efficiently and gradual loss of bone substance is … more
Date: December 3, 1977
Creator: Sharpe, W.D.
Item Type: Refine your search to only Report
open access

Agriculture and Fast Track Trade Legislation

Description: This report considers the issue of new "fast track" in Congress. The report discusses that the new legislation could be used to negotiate new trade deals with countries in Latin America and Asia. Moreover, the report summarizes the agricultural debates on the issue.
Date: December 3, 1997
Creator: Becker, Geoffrey S. & Hanrahan, Charles E.
Item Type: Refine your search to only Report
open access

Agriculture and Fast Track Trade Legislation

Description: Senate and House committees in October reported legislation for new fast track authority enabling the Administration to negotiate trade agreements with foreign countries and to submit them to Congress for consideration under expedited procedures. Many agricultural and food industry interests are among the export-dependent enterprises that support new fast track authority, arguing that foreign trading partners will not seriously negotiate with an Administration that lacks it. However, some agric… more
Date: December 3, 1997
Creator: Becker, Geoffrey S. & Hanrahan, Charles E.
Item Type: Refine your search to only Report
open access

Algorithms to Automate LCLS Undulator Tuning

Description: Automation of the LCLS undulator tuning offers many advantages to the project. Automation can make a substantial reduction in the amount of time the tuning takes. Undulator tuning is fairly complex and automation can make the final tuning less dependent on the skill of the operator. Also, algorithms are fixed and can be scrutinized and reviewed, as opposed to an individual doing the tuning by hand. This note presents algorithms implemented in a computer program written for LCLS undulator tuning… more
Date: December 3, 2010
Creator: Wolf, Zachary
Item Type: Refine your search to only Report
open access

Alternatives to diesel fuel in California - fuel cycle energy and emission effects of possible replacements due to the TAC diesel particulate decision.

Description: Limitations on petroleum-based diesel fuel in California could occur pursuant to the 1998 declaration by California's Air Resources Board (CARB) that the particulate matter component of diesel exhaust is a carcinogen, therefore a toxic air contaminant (TAC) subject to the state's Proposition 65. It is the declared intention of CARB not to ban or restrict diesel fuel per se, at this time. Assuming no total ban, Argonne National Laboratory (ANL) explored two feasible mid-course strategies, each o… more
Date: December 3, 1999
Creator: Saricks, C. L.; Rote, D. M.; Stodolsky, F. & Eberhardt, J. J.
Item Type: Refine your search to only Article
open access

AMPS automated message processing system, LER 76-101701A. [For preparing SACNET messages off line]

Description: This report describes the operation and use of the LLL Automated Message Processing System (AMPS), which is used for off-line preparation of messages for SACNET (Secure Automatic Communications Network). The preparation of teletype messages before AMPS required typing on a teletype to create a paper tape in ASCII code compatible with SACNET. AMPS uses a MCS-80 microprocessor, CRT with keyboard, and a teletype to create the SACNET messages. Through processor control and CRT edit capabilities, th… more
Date: December 3, 1976
Creator: Benge, W. & Spann, J.
Item Type: Refine your search to only Report
open access

An Analysis of Energy Savings Possible Through Advances in Automotive Tooling Technology

Description: The use of lightweight and highly formable advanced materials in automobile and truck manufacturing has the potential to save fuel. Advances in tooling technology would promote the use of these materials. This report describes an energy savings analysis performed to approximate the potential fuel savings and consequential carbon-emission reductions that would be possible because of advances in tooling in the manufacturing of, in particular, non-powertrain components of passenger cars and heavy … more
Date: December 3, 2004
Creator: Rick Schmoyer, RLS
Item Type: Refine your search to only Report
open access

Analysis of Savannah Survey Sediment Collections of 30 Sep 04

Description: This report summarizes laboratory radiochemical analyses of sediment samples collected by the Defense Threat Reduction Agency during the DoD Savannah Survey operations of Sep 04. The analytic goal was to determine if Wassaw Sound sediment collections of 30 Sep 04 display evidence for local anthropogenic uranium, as distinct from the recognized regional background stemming from the Savannah River Site (SRS). Radiochemical methods were selected to maximize detection sensitivity for such anthropog… more
Date: December 3, 2004
Creator: Wimer, N. G.; Hutcheon, I. D.; Esser, B. K. & Ramon, E. C.
Item Type: Refine your search to only Report
open access

An Analytic Study of the Perpendicularly Propagating Electromagnetic Drift Instabilities in the Magnetic Reconnection Experiment

Description: A local linear theory is proposed for a perpendicularly propagating drift instability driven by relative drifts between electrons and ions. The theory takes into account local cross-field current, pressure gradients and modest collisions as in the Magnetic Reconnection Experiment (MRX) [10]. The unstable waves have very small group velocities in the direction of the pressure gradient, but have a large phase velocity near the relative drift velocity between electrons and ions in the direction of… more
Date: December 3, 2008
Creator: Wang, Y.; Kulsrud, R. & Ji, H.
Item Type: Refine your search to only Report
open access

ANWR Development: Economic Impacts

Description: This report briefly discusses Congressional considerations on whether to continue to protect the ecosystem on the coastal plain of the Arctic National Wildlife Refuge (ANWR) or to open it to oil and gas development.
Date: December 3, 2001
Creator: Gelb, Bernard A.
Item Type: Refine your search to only Report
Back to Top of Screen