10 (micro)m and 5 (micro)m Pinhole-Assisted Point-Projection Backlit Imaging for NIF (open access)

10 (micro)m and 5 (micro)m Pinhole-Assisted Point-Projection Backlit Imaging for NIF

Pinhole-assisted point-projection backlighting with 10{micro}m and 5 {micro}m pinholes placed a small distance of order 1 mm away from the backlighter produces images with large field of view and high resolution. Pinholes placed closely to high-power backlighter sources can vaporize and close due to x-ray driven ablation, thereby limiting the usefulness of this method. A study of streaked 1-D backlit imaging of 25 {micro}m W wires using the OMEGA laser is presented. The pinhole closure timescale for 10 {micro}m pinholes placed 0.45 mm and 1 mm distant from the backlighter is 1.3 ns and 2.2 ns, respectively. Similar timescales for 5 {micro}m pinholes is also presented. Successful wire imaging prior to pinhole closure is clearly demonstrated.
Date: June 5, 2001
Creator: Bullock, A. B.; Landen, O. L. & Bradley, D. K.
Object Type: Article
System: The UNT Digital Library
80th Texas Legislature, Regular Session, House Bill 1, Chapter 1428 (open access)

80th Texas Legislature, Regular Session, House Bill 1, Chapter 1428

Bill introduced by the Texas House of Representatives relating to appropriating money for the support of the Judicial, Executive, and Legislative Branches of the State government, for the construction of State buildings, and for State aid to public junior colleges, for the period beginning September 1, 2007 and ending August 31, 2009; authorizing and prescribing conditions, limitations, rules, and procedures for allocating and expending the appropriated funds; and declaring an emergency. Includes a proclamation issued by the Governor of the State of Texas, issuing a line-item veto of the General Appropriations Bill.
Date: 2007-06-05/2007-06-15
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History
Acquisition of Leased Space for the U.S. Patent and Trademark Office (open access)

Acquisition of Leased Space for the U.S. Patent and Trademark Office

Correspondence issued by the General Accounting Office with an abstract that begins "This report reviews the data, assumptions, and conclusions reached by the General Services Administration (GSA) and the Patent and Trademark Office (PTO) on the acquisition of about two million square feet of leased space for the consolidation of PTO activities. This build-to-suit lease, valued at approximately $1.2 billion over its 20-year term, was signed in June 2000. this report responds to allegations and questions from two public interest groups about the PTO lease acquisition. One public interest group alleged that during the procurement process for the lease (1) GSA improperly awarded the lease to an offeror who had not complied with the solicitation's stated requirements, (2) GSA failed to compete the construction of the interior finishes phase of the project as required by law, and (3) GSA used an illegal cost-plus-a-percentage-of-cost contract. The second public interest group asked (1) whether the requirements in GSA's Solicitation for Offers for the PTO lease transformed the lease from an operating lease to a capital lease under Office of Management and Budget (OMB) Circular A-11; (2) whether the new facility will be able to house all PTO employees and contractors throughout the …
Date: June 5, 2001
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
Advanced Techniques for In-Situ Monitoring of Phase Transformations During Welding Using Synchrotron-Based X-Ray Diffraction (open access)

Advanced Techniques for In-Situ Monitoring of Phase Transformations During Welding Using Synchrotron-Based X-Ray Diffraction

Understanding the evolution of microstructure in welds is an important goal of welding research because of the strong correlation between weld microstructure and weld properties. To achieve this goal it is important to develop a quantitative measure of phase transformations encountered during welding in order to ultimately develop methods for predicting weld microstructures from the characteristics of the welding process. To aid in this effort, synchrotron radiation methods have been developed at Lawrence Livermore National Laboratory (LLNL) for direct observation of microstructure evolution during welding. Using intense, highly collimated synchrotron radiation, the atomic structure of the weld heat affected and fusion zones can be probed in real time. Two synchrotron-based techniques, known as spatially resolved (SRXRD) and time resolved (TRXRD) x-ray diffraction, have been developed for these investigations. These techniques have now been used to investigate welding induced phase transformations in titanium alloys, low alloy steels, and stainless steel alloys. This paper will provide a brief overview of these methods and will discuss microstructural evolution during the welding of low carbon (AISI 1005) and medium carbon (AISI 1045) steels where the different levels of carbon influence the evolution of microstructures during welding.
Date: June 5, 2005
Creator: Elmer, J. W.; Palmer, T. A.; Zhang, W. & DebRoy, T.
Object Type: Article
System: The UNT Digital Library
ADVANCES IN IMPEDANCE THEORY (open access)

ADVANCES IN IMPEDANCE THEORY

We review recent progress in the following areas of the impedance theory: calculation of impedance of tapers and small angle collimators; optical approximation and parabolic equation for the high-frequency impedance; impedance due to resistive inserts in a perfectly conducting pipe.
Date: June 5, 2009
Creator: Stupakov, G.
Object Type: Article
System: The UNT Digital Library
Afghanistan: Government Formation and Performance (open access)

Afghanistan: Government Formation and Performance

This report discusses the current Afghan government, which is rife with corruption and very limited in power, hence the continued presence of the Taliban and general worldwide pessimism about Afghanistan stabilization efforts. This report addresses issues such as ethnic diputes, President Hamid Karzai's re-election bid for August 2009, and the U.S.-Afghanistan relationship in particular. The Obama Administration is currently promoting, among other Afghanistan stabilization efforts, a "civilian surge" of additional U.S. personnel to Afghanistan.
Date: June 5, 2009
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Air Force Aerial Refueling Methods: Flying Boom versus Hose-and-Drogue (open access)

Air Force Aerial Refueling Methods: Flying Boom versus Hose-and-Drogue

Decisions on the composition of the Air Force aerial refueling fleet were made decades ago, when the primary mission was to refuel long-range strategic bombers. Modifications have been made to many of these tanker aircraft (KC-135s and KC-10s) to make them more effective in refueling fighter aircraft. This report examines the balance between two different refueling methods in today's refueling fleet -- "flying boom" and "hose-and-drogue."
Date: June 5, 2006
Creator: Bolkcom, Christopher
Object Type: Report
System: The UNT Digital Library
Air Force Aerial Refueling Methods: Flying Boom Versus Hose-and-Drogue (open access)

Air Force Aerial Refueling Methods: Flying Boom Versus Hose-and-Drogue

This report considers the refueling fleet for the Air Force. The report examines two different refueling methods.
Date: June 5, 2006
Creator: Bolkcom, Christopher
Object Type: Report
System: The UNT Digital Library
Air Force FB-22 Bomber Concept (open access)

Air Force FB-22 Bomber Concept

The Air Force has expressed interest in developing a bomber variant of the F-22A Raptor to "bridge the gap" between today's bombers and a follow-on bomber in 2037. Questions exist regarding the FB-22's feasibility, cost, and combat potential.
Date: June 5, 2006
Creator: Bolkcom, Christopher
Object Type: Report
System: The UNT Digital Library
Alaska's North Slope: Requirements for Restoring Lands After Oil Production Ceases (open access)

Alaska's North Slope: Requirements for Restoring Lands After Oil Production Ceases

A chapter report issued by the General Accounting Office with an abstract that begins "This report discusses the nature and extent of dismantlement, removal, and restoration requirements for oil industry activities that are occurring on both federal and state lands located on the North Slope of the state of Alaska. The state of Alaska, which owns the lands where most of the North Slope's current oil production occurs, has adopted general dismantlement, removal, and restoration requirements that contain no specific stipulations on what infrastructure must be removed or to what condition the lands used for oil industry activities must be restored once production ceases. Alaska's requirements are similar to those of some states but less explicit than those of other states, which create a fixed obligation to fully restore the land according to specific requirements. Until the state of Alaska defines the condition in which it would like its lands returned, there is no way to accurately estimate the cost of dismantling and removing the infrastructure and restoring the disturbed land on Alaska's North Slope. Existing financial assurances, such as bonding requirements, ensure the availability of only a small portion of the funds that are likely to be needed to …
Date: June 5, 2002
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Ambient Radon-222 Monitoring in Amargosa Valley, Nevada (open access)

Ambient Radon-222 Monitoring in Amargosa Valley, Nevada

As part of a program to characterize and baseline selected environmental parameters in the region around the proposed repository at Yucca Mountain, Nevada, ambient radon-222 monitoring was conducted in the rural community of Amargosa Valley, the community closest to the proposed repository site. Passive integrating radon monitors and a continuous radon monitoring instrument were deployed adjacent to the Community Environmental Monitoring Program (CEMP) (http://www.cemp.dri.edu/index.html) station located in the Amargosa Valley Community Center near the library. The CEMP station provided real-time ambient gamma exposure and meteorological data used to correct the integrated radon measurements as well as verify meteorological data collected by the continuous radon monitoring instrument. Additionally, different types of environmental enclosures that housed the monitors and instrument were used to determine if particular designs influenced the ambient radon measurements.
Date: June 5, 2008
Creator: Karr, L. H.; Tappen, J. J.; Shafer, D. & Gray, K. J.
Object Type: Article
System: The UNT Digital Library
Analysis and Summary Report of Historical Dry Well Gamma Logs for the 241-B Tank Farm 200 East (open access)

Analysis and Summary Report of Historical Dry Well Gamma Logs for the 241-B Tank Farm 200 East

This report provides a summary of the gross gamma ray data for the 241-B Tank Farm and is intended to identify changes in the gamma activity of gamma-emitting radionuclide contaminants around each accessible borehole, and is not intended to provide interpretation of the data relative to vadose zone mechanics. Trends in data, as well as areas where additional information would be helpful in evaluating the unusual nature of some of the data, are discussed.
Date: June 5, 2000
Creator: SYDNOR, H.A.
Object Type: Report
System: The UNT Digital Library
Analysis and Summary Report of Historical Dry Well Gamma Logs for the 241-T Tank Farm 200 West (open access)

Analysis and Summary Report of Historical Dry Well Gamma Logs for the 241-T Tank Farm 200 West

This report provides a summary of the gross gamma ray data for the 241-T Tank Farm and is intended to identify changes in the gamma activity of gamma-emitting radionuclide contaminants around each accessible borehole.
Date: June 5, 2000
Creator: SYDNOR, H.A.
Object Type: Report
System: The UNT Digital Library
ANNUAL RADIOACTIVE WASTE TANK INSPECTION PROGRAM- 2007 (open access)

ANNUAL RADIOACTIVE WASTE TANK INSPECTION PROGRAM- 2007

Aqueous radioactive wastes from Savannah River Site (SRS) separations and vitrification processes are contained in large underground carbon steel tanks. The 2007 inspection program revealed that the structural integrity and waste confinement capability of the Savannah River Site waste tanks were maintained. A very small amount of material had seeped from Tank 12 from a previously identified leaksite. The material observed had dried on the tank wall and did not reach the annulus floor. A total of 5945 photographs were made and 1221 visual and video inspections were performed during 2007. Additionally, ultrasonic testing was performed on four Waste Tanks (15, 36, 37 and 38) in accordance with approved inspection plans that met the requirements of WSRC-TR-2002- 00061, Revision 2 'In-Service Inspection Program for High Level Waste Tanks'. The Ultrasonic Testing (UT) In-Service Inspections (ISI) are documented in a separate report that is prepared by the ISI programmatic Level III UT Analyst. Tanks 15, 36, 37 and 38 are documented in 'Tank Inspection NDE Results for Fiscal Year 2007'; WSRC-TR-2007-00064.
Date: June 5, 2008
Creator: West, B & Ruel Waltz, R
Object Type: Report
System: The UNT Digital Library
The Argentine Financial Crisis: A Chronology of Events (open access)

The Argentine Financial Crisis: A Chronology of Events

Argentina’s current crisis resulted from a confluence of events, some external to Argentina’s policy process, others directly related to its political and economic choices. The following is a summary of these events from before Argentina’s adoption of the currency board in 1991 to developments in early 2002.
Date: June 5, 2003
Creator: Hornbeck, J. F. & Marshall, Meaghan K.
Object Type: Report
System: The UNT Digital Library
Association Health Plans, Health Marts and the Small Group Market for Health Insurance (open access)

Association Health Plans, Health Marts and the Small Group Market for Health Insurance

An estimated 41.2 million people were without health insurance in 2001. Legislation under consideration by the 108th and earlier Congresses is intended to assist small employers in offering health insurance as a benefit to their workers. A new bill, H.R. 4281, introduced on May 5, 2004, The Small Business Health Fairness Act of 2003 (H.R. 6601s. 545), and a number of bills from the earlier Congresses include provisions creating new groups for small firms to join or encouraging the growth of existing groups so that small employers can band together to offer coverage to their employees.
Date: June 5, 2003
Creator: Hearne, Jean P.
Object Type: Report
System: The UNT Digital Library
Atomic resolution of lithium ions in LiCoO{sub 2} (open access)

Atomic resolution of lithium ions in LiCoO{sub 2}

LiCoO{sub 2} is the most common lithium storage material used as positive electrode in lithium rechargeable batteries. Ordering of lithium and vacancies has a profound effect on the physical properties of Li{sub x}CoO{sub 2} and the electrochemical performances of lithium batteries. An exit surface wave (ESW) phase image reconstructed from experimental images obtained on the LBNL One-Angstrom Microscope (OAM) shows all three types of atoms in LiCoO{sub 2}.
Date: June 5, 2003
Creator: Shao-Horn, Yang; Croguennec, Laurence; Delmas, Claude; Nelson, E. Chris & O'Keefe, Michael A.
Object Type: Article
System: The UNT Digital Library
Automated Test System for NIF Flashlamps (open access)

Automated Test System for NIF Flashlamps

This paper describes design and operation of the flashlamp test system, used to evaluate the primary laser flashlamps on the National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory (LLNL) in Livermore, California. The tester delivers repetitive high voltage pulses to a series pair of flashlamps at levels closely simulating those encountered in normal operation. Each lamp pair is subjected to a pre-ionization and main pulse shot sequence, with two minute intervals between shots. This capability allows the manufacturer to test and evaluate the flashlamps for infant mortality and longevity before delivery to NIF. All operations are under computer control with fully automated test and data acquisition capabilities requiring minimal operator input. The system is designed to operate continuously. Typical pre-ionization and main pulse outputs are: (1) Pre-ionization Pulse--V{sub chg} = 27kV, I{sub peak} = 3kA, E = 2.4kJ; Pulse Width--(10%-90%) - 200us; Main Pulse--V{sub chg} = 23kV, I{sub peak} - 24kA, E - 78.6kJ; and Pulse Width--(10%-90%) - 350us.
Date: June 5, 2001
Creator: da Silva, T; Creely, P; Hammon, J; Shaw, R; Boyle, R T & Fulkerson, E S
Object Type: Article
System: The UNT Digital Library
Automatic Extraction of Closed Pixel Clusters for Target Cueing in Hyperspectral Images (open access)

Automatic Extraction of Closed Pixel Clusters for Target Cueing in Hyperspectral Images

Traditional algorithms for automatic target cueing (ATC) in hyperspectral images, such as the RX algorithm, treat anomaly detection as a simple hypothesis testing problem. Each decision threshold gives rise to a different set of anomalous pixels. The clustered Rx algorithm generates target cues by grouping anomalous pixels into spatial clusters, and retaining only those clusters that satisfy target specific spatial constraints. It produces one set of target cues for each of several decision thresholds, and conservatively requires {Omicron}(K{sup 2}) operations per pixel, where K is the number of spectral bands (which varies from hundreds to thousands in hyperspectral images). A novel ATC algorithm, known as ''Pixel Cluster Cueing'' (PCC), is discussed. PCC groups pixels into clusters based on spectral similarity and spatial proximity, and then selects only those clusters that satisfy target-specific spatial constraints as target cues. PCC requires only {Omicron}(K) operations per pixel, and it produces only one set of target cues because it is not an anomaly detection algorithm, i.e., it does not use a decision threshold to classify individual pixels as anomalies. PCC is compared both computationally and statistically to the RX algorithm.
Date: June 5, 2001
Creator: Paglieroni, D W & Perkins, D E
Object Type: Article
System: The UNT Digital Library
Autophosphorylation of the DNA-Dependent Protein Kinase Catalyticsubunit is Required for Rejoining of DNA Double-Strand Breaks (open access)

Autophosphorylation of the DNA-Dependent Protein Kinase Catalyticsubunit is Required for Rejoining of DNA Double-Strand Breaks

This report is a descriptive journey of the Autophosphorylation of the DNA-Dependent Protein Kinase Catalyticsubunit is Required for Rejoining of DNA Double-Strand Breaks.
Date: June 5, 2002
Creator: Chan, Doug W.; Chen, Benjamin Ping-Chi; Yang, Shun-Jen; Singh,Sheela; Murphy, Michael B.; Kurimasa, Akihiro et al.
Object Type: Article
System: The UNT Digital Library
Beam Effects from an Increase of LINAC Current from 40 ma to 49 Milliamperes (open access)

Beam Effects from an Increase of LINAC Current from 40 ma to 49 Milliamperes

On March 25, 2002 the FNAL Linac had been running at a decreased 40 ma of beam current for some time. Both the 400 MeV Linac and the 8GeV Booster had been tuned to optimum running during that time. Optimum running for the Booster was at 4.1e12 per pulse. Losses at injection and at transition were limiting intensity at the time. By March 26, 2002 the Linac beam current had been increased to 49 ma. The optimum Booster intensity immediately jumped to 4.5e12 per pulse and increased in the next few days to 4.8e12 and 5e12 per pulse. Booster was not retuned until early April when a low-loss 5.0e12 was obtained for stacking operations. Linac current had sagged to 47 ma by then. Measurements were made on the 25th at 40 ma and the 26th and 27th at 49 ma. This is a report and discussion of those measurements.
Date: June 5, 2002
Creator: Tomlin, Ray
Object Type: Report
System: The UNT Digital Library
BRAC 2005 Report to the Base Closure and Realignment Commission: Navy Justification Book (open access)

BRAC 2005 Report to the Base Closure and Realignment Commission: Navy Justification Book

Navy Reserve Centers - Cape Girardeau, MO, COBRA Realignment Summary Report
Date: June 5, 2005
Creator: United States. Department of Defense.
Object Type: Book
System: The UNT Digital Library
BRAC 2005 Report to the Base Closure and Realignment Commission: Navy Justification Book (open access)

BRAC 2005 Report to the Base Closure and Realignment Commission: Navy Justification Book

Navy Reserve Centers - Asheville, NC, RECOMMENDATION FOR CLOSURE NAVY RESERVE CENTERS (Disregard Restriction Header and Footer)
Date: June 5, 2005
Creator: United States. Department of Defense.
Object Type: Book
System: The UNT Digital Library
BRAC 2005 Report to the Base Closure and Realignment Commission: Navy Justification Book (open access)

BRAC 2005 Report to the Base Closure and Realignment Commission: Navy Justification Book

Navy Reserve Centers - Asheville, NC, Background (Disregard Restriction Header and Footer)
Date: June 5, 2005
Creator: United States. Department of Defense.
Object Type: Book
System: The UNT Digital Library