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Chemical Regulation: Actions are Needed to Improve the Effectiveness of EPA's Chemical Review Program

Description: Testimony issued by the Government Accountability Office with an abstract that begins "Chemicals play an important role in everyday life, but some may be harmful to human health and the environment. Chemicals are used to produce items widely used throughout society, such as cleansers and plastics as well as industrial solvents and additives. However, some chemicals, such as lead and mercury, are highly toxic at certain doses and need to be regulated because of health and safety concerns. In 197… more
Date: August 2, 2006
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Border Security: Continued Weaknesses in Screening Entrants into the United States

Description: Testimony issued by the Government Accountability Office with an abstract that begins "Currently, U.S. citizens are not required to present a passport when entering the United States from countries in the Western Hemisphere. However, U.S. citizens are required to establish citizenship to a CBP officer's satisfaction. On its Web site, U.S. Customs and Border Protection (CBP) advises U.S. citizens that an officer may ask for identification documents as proof of citizenship, including birth certif… more
Date: August 2, 2006
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Capitol Visitor Center: Update on Status of Project's Schedule and Cost As of August 2, 2006

Description: Testimony issued by the Government Accountability Office with an abstract that begins "Our remarks will focus on the Architect of the Capitol's (AOC) progress in achieving selected project milestones and in managing the project's schedule since Congress's June 28, 2006, hearing on the project. As part of this discussion, we will address a number of key challenges and risks that continue to face the project, as well as actions AOC has taken or plans to take to address these risks. In addition, w… more
Date: August 2, 2006
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

A Core-Particle Model for Periodically Focused Ion Beams with Intense Space-Charge

Description: A core-particle model is derived to analyze transverse orbits of test particles evolving in the presence of a core ion beam described by the KV distribution. The core beam has uniform density within an elliptical cross-section and can be applied to model both quadrupole and solenoidal focused beams in periodic or aperiodic lattices. Efficient analytical descriptions of electrostatic space-charge fields external to the beam core are derived to simplify model equations. Image charge effects are a… more
Date: August 2, 2006
Creator: Lund, S M; Barnard, J J; Bukh, B; Chawla, S R & Chilton, S H
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Workforce Investment Act of 1998 (WIA): Reauthorization of Job Training Programs in the 109th Congress

Description: This report discusses the Workforce Investment Act of 1998 (WIA), P.L. 105-220, which is the nation’s chief job training legislation, authorizes several job training programs, including Youth, Adult, and Dislocated Worker Activities; and Job Corps.
Date: August 2, 2006
Creator: Lordeman, Ann
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Columbia River Component Data Evaluation Summary Report

Description: The purpose of the Columbia River Component Data Compilation and Evaluation task was to compile, review, and evaluate existing information for constituents that may have been released to the Columbia River due to Hanford Site operations. Through this effort an extensive compilation of information pertaining to Hanford Site-related contaminants released to the Columbia River has been completed for almost 965 km of the river.
Date: August 2, 2006
Creator: Cearlock, C.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sub-nanometer-scale measurements of the interaction of ultrafast soft x-ray free-electron-laser pulses with matter

Description: Femtosecond pulses from soft-x-ray free-electron lasers (FELs) [1] are ideal for directly probing matter at atomic length scales and timescales of atomic motion. An important component of understanding ultrafast phenomena of light-matter interactions is concerned with the onset of atomic motion which is impeded by the atoms inertia. This delay of structural changes will enable atomic-resolution flash-imaging [2-3] to be performed at upcoming x-ray FELs [4-5] with pulses intense enough to record… more
Date: August 2, 2006
Creator: Hau-Riege, S.; Chapman, H.; Krzywinski, J.; Sobierajski, R.; London, R.; Bionta, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Results From an International Simulation Study on Couples Thermal, Hydrological, and Mechanical (THM) Processes Near Geological Nuclear Waste Repositories

Description: As part of the ongoing international DECOVALEX project, four research teams used five different models to simulate coupled thermal, hydrological, and mechanical (THM) processes near waste emplacement drifts of geological nuclear waste repositories. The simulations were conducted for two generic repository types, one with open and the other with back-filled repository drifts, under higher and lower postclosure temperatures, respectively. In the completed first model inception phase of the projec… more
Date: August 2, 2006
Creator: Rutqvist, J.; Barr, D.; Birkholzer, J.T.; Chijimatsu, M.; Kolditz, O.; Liu, Q. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Normal and Pathological NCAT Image and PhantomData Based onPhysiologically Realistic Left Ventricle Finite-Element Models

Description: The 4D NURBS-based Cardiac-Torso (NCAT) phantom, whichprovides a realistic model of the normal human anatomy and cardiac andrespiratory motions, is used in medical imaging research to evaluate andimprove imaging devices and techniques, especially dynamic cardiacapplications. One limitation of the phantom is that it lacks the abilityto accurately simulate altered functions of the heart that result fromcardiac pathologies such as coronary artery disease (CAD). The goal ofthis work was to enhance … more
Date: August 2, 2006
Creator: Veress, Alexander I.; Segars, W. Paul; Weiss, Jeffrey A.; Tsui,Benjamin M.W. & Gullberg, Grant T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

LFR Demonstrator Materials Viability

Description: Interest in fast reactor development has increased with the Department of Energy's introduction of the Global Nuclear Energy Partnership (GNEP) [1]. The GNEP program plans development of a sodium cooled Advanced Burner Reactor (ABR) that can be used to reduce the amount spent LWR fuel in storage and the number of high level waste sites needed for expansion of nuclear power throughout the world over the 21st century. In addition, the program proposes to make nuclear power more available while re… more
Date: August 2, 2006
Creator: Caro, M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Resolution Analysis of Two Geophysical Imaging Methods For Characterizing and Monitoring Hydrologic Conditions in the Vadose Zone

Description: The objective of this research project was to analyze the resolution of two geophysical imaging techniques: electrical resistivity tomography (ERT) and cross-borehole ground penetrating radar (XBGPR) for monitoring subsurface flow and transport processes within the vadose zone. This was accomplished through a coupled approach involving very fine-scale unsaturated flow forward modeling, conversion of the resultant flow and solute fields to geophysical property models, forward geophysical modelin… more
Date: August 2, 2006
Creator: D. Alumbaugh, D. LaBreque, J. Brainard and G. Hammond
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Efficient Electron Injection Into Plasma Waves Using Higher-Orderlaser Modes

Description: Using higher-order transverse laser modes as drivers forplasma wave excitation, and, in particular, using a ring laser beam withmaximum intensity off-axis, results in reversal of the focusinganddefocusing phase regions in a laser wakefield accelerator. Thisresults in improved performance of self-trapping and laser injectionschemes. Specifically, the trapping threshold required foropticalinjection is decreased and the maximum energy gain of the trappedelectrons is increased. This scheme could al… more
Date: August 2, 2006
Creator: Michel, P.; Esarey, E.; Schroeder, C. B.; Shadwick, B. A. & Leemans, W. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

China and Proliferation of Weapons of Mass Destruction and Missiles: Policy Issues

Description: Congress has long been concerned about whether U.S. policy advances the national interest in reducing the role of the People's Republic of China (PRC) in the proliferation of weapons of mass destruction (WMD) and missiles that could deliver them. China has taken some steps to mollify U.S. concerns about its role in weapons proliferation. Skeptics question whether China's cooperation in weapons nonproliferation has warranted President Bush's pursuit of stronger bilateral ties. This report discus… more
Date: August 2, 2006
Creator: Kan, Shirley A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chemical Facility Security

Description: Facilities handling large amounts of potentially hazardous chemical (i.e., chemical facilities) might be of interest to terrorists, either as targets for direct attacks meant to release chemicals into the community or as a source of chemicals for use elsewhere. For any individual facility, the risk is very small, but the risks may be increasing -- with potentially severe consequences for human health and the environment. Congress might choose to rely on existing efforts in the public and privat… more
Date: August 2, 2006
Creator: Schierow, Linda-Jo
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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