2001 Gordon Research Conference on Organometallic Chemistry. Final progress report [agenda and attendee list] (open access)

2001 Gordon Research Conference on Organometallic Chemistry. Final progress report [agenda and attendee list]

The Gordon Research Conference on Organometallic Chemistry was held at Salve Regina University, Newport, Rhode Island, July 22-27, 2001. The conference had 133 participants. The attendees represented the spectrum of endeavor in this field, coming from academia, industry, and government laboratories, and included US and foreign scientists, senior researchers, young investigators, and students. Emphasis was place on current unpublished research and discussion of the future target areas in this field. There was a conscious effort to stimulate lively discussion about the key issues in the field today. Time for formal presentations was limited in the interest of group discussions; poster sessions were held.
Date: July 27, 2001
Creator: Burns, Carol
Object Type: Report
System: The UNT Digital Library
Breeding 10{sup 10}/s Radioactive Nuclei in a Compact Plasma Focus Device (open access)

Breeding 10{sup 10}/s Radioactive Nuclei in a Compact Plasma Focus Device

In the early 90's, it was discovered that a Plasma Focus (PF) system self-creates a plasma-tarp in which high energy-threshold nuclear-reactions occur at high reaction rates. Short life radioisotopes (SLR)s such as {sup 18}F, {sup 17}F, {sup 15}O, {sup 14}O, {sup 13}N have been generated (10{sup 6} - 10{sup 8} per pulse) with a PF-machine using 7 kJ energy storage to produce the plasmas. {beta}{sup -} radioactivity from the SLRs is measured with rugged, Geiger counters inserted into the PF-chamber, and a specific SLR is identified by its half-life. The PF chamber (before discharge) is filled with a mixture of gases that constitutes the latter plasma-target--beam system, e.g., the elements required to produce specific SLRs through nuclear reactions. In this paper, arguments are presented showing that a modest sized PF-machine, using a 50-75 kJ fast capacitor-bank, when operated at pulse frequencies of 1-10 Hz can produce {ge} 10{sup 9} SLRs/pulse. This paper reports the result s of testing a PF as a breeder of SLRs with dual applications for: (1) Secondary Radioactive Nuclear Beams ion-sources (Z < 35), and (2) as a breeder of radioisotopes for biomedicine (Z {le} 10) and/or PET imaging.
Date: July 27, 2001
Creator: Brzosko, JANS.
Object Type: Article
System: The UNT Digital Library
A case study in application I/O on Linux clusters. (open access)

A case study in application I/O on Linux clusters.

A critical but often ignored component of system performance is the I/O system. Today's applications expect a great deal from underlying storage systems and software, and both high performance distributed storage and high level interfaces have been developed to fill these needs. In this paper they discuss the I/O performance of a parallel scientific application on a Linux cluster, the FLASH astrophysics code. This application relies on three I/O software components to provide high performance parallel I/O on Linux clusters: the Parallel Virtual File System (PVFS), the ROMIO MPI-IO implementation, and the Hierarchical Data Format (HDF5) library. First they discuss the roles played by each of these components in providing an I/O solution. Next they discuss the FLASH I/O benchmark and point out its relevance. Following this they examine the performance of the benchmark, and through instrumentation of both the application and underlying system software code they discover the location of major software bottlenecks. They work around the most inhibiting of these bottlenecks, showing substantial performance improvement. Finally they point out similarities between the inefficiencies found here and those found in message passing systems, indicating that research in the message passing field could be leveraged to solve similar problems in …
Date: July 27, 2001
Creator: Ross, R.; Nurmi, D.; Cheng, A. & Zingale, M.
Object Type: Article
System: The UNT Digital Library
Energy Efficiency: Budget, Oil Conservation, and Electricity Conservation Issues (open access)

Energy Efficiency: Budget, Oil Conservation, and Electricity Conservation Issues

Energy security, a major driver of federal energy efficiency programs in the past, came back into play as oil and gas prices rose late in the year 2000. Also, the electricity shortages in California have brought a new emphasis to the role that energy efficiency and energy conservation may play in dampening electricity demand.
Date: July 27, 2001
Creator: Sissine, Fred
Object Type: Report
System: The UNT Digital Library
Hazardous Waste: EPA's National and Regional Ombudsmen Do Not Have Sufficient Independence (open access)

Hazardous Waste: EPA's National and Regional Ombudsmen Do Not Have Sufficient Independence

A letter report issued by the General Accounting Office with an abstract that begins "Through the impartial and independent investigation of citizens' complaints, federal ombudsmen provide the public with an informal and accessible avenue of redress. Ombudsmen help federal agencies be more responsive to persons who believe that their concerns have not been dealt with fully or fairly through normal problem-solving channels. A national hazardous waste ombudsman was established at the Environmental Protection Agency (EPA) in 1984. In recent years, that ombudsman has increasingly investigated citizen complaints referred by Members of Congress. As the number and significance of the ombudsman's investigations have increased, so have questions about the adequacy of available resources and whether other impediments exist to fulfilling the ombudsman's responsibilities. This report (1) compares the national ombudsman's operations with professional standards for independence and other factors and (2) determines the relative roles and responsibilities of EPA's national and regional ombudsmen. GAO found that key aspects of EPA's national hazardous waste ombudsman differ from professional standards for ombudsmen who deal with inquiries from the public. For example, an effective ombudsman must have independence from any person who may be the subject of a complaint or inquiry. However, EPA's national …
Date: July 27, 2001
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
HIV/AIDS Drugs, Patents and the TRIPS Agreement: Issues and Options (open access)

HIV/AIDS Drugs, Patents and the TRIPS Agreement: Issues and Options

This report considers the current dispute between the research-based pharmaceutical industry, on one hand, and certain foreign governments, patient advocacy groups and generic manufacturers, on the other, regarding patented HIV/AIDS pharmaceuticals. It then describes contemporary international controversies regarding patents on HIV/AIDS drugs and the potential consequences of these disputes for entrepreneurial drug companies.
Date: July 27, 2001
Creator: Thomas, John R.
Object Type: Report
System: The UNT Digital Library
IMPROVEMENT OF WEAR COMPONENT'S PERFORMANCE BY UTILIZING ADVANCED MATERIALS AND NEW MANUFACTURING TECHNOLOGIES: CASTCON PROCESS FOR MINING APPLICATIONS (open access)

IMPROVEMENT OF WEAR COMPONENT'S PERFORMANCE BY UTILIZING ADVANCED MATERIALS AND NEW MANUFACTURING TECHNOLOGIES: CASTCON PROCESS FOR MINING APPLICATIONS

A tungsten carbide monolithic preform was produced by Advanced Ceramics. MTU conducted various sintering tests on the preform to determine conditions for removing the organic binder and improving the mechanical properties. The originally selected parameters for sintering did not perform as anticipated and further testing is underway.
Date: July 27, 2001
Creator: Huang, Xiaodi & Gertsch, Richard
Object Type: Report
System: The UNT Digital Library
Kosovo Air Operations: Need to Maintain Alliance Cohesion Resulted in Doctrinal Departures (open access)

Kosovo Air Operations: Need to Maintain Alliance Cohesion Resulted in Doctrinal Departures

A letter report issued by the General Accounting Office with an abstract that begins "The North Atlantic Treaty Organization (NATO) alliance achieved the goals of Operation Allied Force--Yugoslavian forces were removed from Kosovo; refugees returned; and a peacekeeping force was put in place, with no allied combat fatalities. Through it all, the NATO allies stayed united and learned much about working together as a combat force. These achievements did not come easily, however, and the departures from accepted U.S. military doctrine were troubling for many U.S. military commanders and planners. The Department of Defense (DOD) has tried to address these and other issues by changing its doctrine. Nevertheless, GAO has two observations on the nature of conducting military operations in a multinational environment. First, the challenges of dealing with the constraints of working within a multinational environment may not be completely resolved through the development of new joint multinational operations doctrine and revisions to joint and service doctrine. These revisions to doctrine are likely to be unable to provide conclusive solutions to these issues because each multinational operation will differ according to the nations that participate and the extent of their interests. Second, future multinational operations, particularly those in which …
Date: July 27, 2001
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
LLNL Identification Program: Regional Body-Wave Correction Surfaces and Surface-Wave Tomography Models to Improve Discrimination (open access)

LLNL Identification Program: Regional Body-Wave Correction Surfaces and Surface-Wave Tomography Models to Improve Discrimination

LLNL identification research is focused on the problem of correctly discriminating small-magnitude explosions from a background of earthquakes, mining tremors, and other events. The goal is to reduce the variance within the population of each type of event, while increasing the separation between the explosions and the other event types. We address this problem for both broad categories of seismic waves: body waves and surface waves. First, we map out the effects of propagation and source size in advance so that they can be accounted for and removed from observed events. This can dramatically reduce the population variance. Second, we try to optimize the measurement process to improve the separation between population types. For body waves we focus on the identification power of the short-period regional phases Pn, Pg, Sn and Lg, which can often be detected down to very small magnitudes. Many studies have shown that particular ratios of these phases, such as 6-to 8-Hz Pn/Lg, can effectively discriminate between closely located explosions and earthquakes. To extend this discrimination power over broad areas, we use our revised Magnitude and Distance Amplitude Correction (MDAC2) procedure. This joint source and path model fits the observed spectra and removes magnitude and distance …
Date: July 27, 2001
Creator: Walter, W.; Rodgers, A. J.; Pasyanos, M. E.; Mayeda, K. M.; Sicherman, A. & Harris, D. B.
Object Type: Article
System: The UNT Digital Library
LLNL Seismic Locations: Validating Improvement Through Integration of Regionalized Models and Empirical Corrections (open access)

LLNL Seismic Locations: Validating Improvement Through Integration of Regionalized Models and Empirical Corrections

The monitoring of nuclear explosions on a global basis requires accurate event locations. As an example, a typical size used for an on-site inspection search area is 1,000 square kilometers or approximately 17 km accuracy, assuming a circular area. This level of accuracy is a significant challenge for small events that are recorded using a sparse regional network. In such cases, the travel time of seismic energy is strongly affected by crustal and upper mantle heterogeneity and large biases can result. This can lead to large systematic errors in location and, more importantly, to invalid error bounds associated with location estimates. Calibration data and methods are being developed and integrated to correct for these biases. Our research over the last few years has shown that one of the most effective approaches to generate path corrections is the hybrid technique that combine both regionalized models with three-dimensional empirical travel-time corrections. We implement a rigorous and comprehensive uncertainty framework for these hybrid approaches. Qualitative and quantitative validations are presented in the form of single component consistency checks, sensitivity analysis, robustness measures, outlier testing along with end-to-end testing of confidence measures. We focus on screening and validating both empirical and model based calibrations …
Date: July 27, 2001
Creator: Schultz, C. A.; Flanagan, M. P.; Myers, S. C.; Pasyanos, M. E.; Swenson, J. L.; Hanley, W. et al.
Object Type: Article
System: The UNT Digital Library
Media Marketing Accountability Act: First Amendment Analysis (open access)

Media Marketing Accountability Act: First Amendment Analysis

None
Date: July 27, 2001
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Metropolitan Area Acquisition (MAA) Implementation Issues (open access)

Metropolitan Area Acquisition (MAA) Implementation Issues

Correspondence issued by the General Accounting Office with an abstract that begins "The General Services Administration (GSA) began its Metropolitan Area Acquisition (MAA) program in 1997 to achieve immediate, substantial, and sustained price reductions for local voice and selected data communications services in selected metropolitan areas. As of June 2001, GSA has awarded 37 MAA contracts for 20 metropolitan areas. The transition from existing GSA contracts to the MAA contracts is still underway. This correspondence answers congressional questions about GAO's June 2001 testimony on MAA implementation issues."
Date: July 27, 2001
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
Military Readiness: Management of Naval Aviation Training Munitions Can Be Improved (open access)

Military Readiness: Management of Naval Aviation Training Munitions Can Be Improved

A letter report issued by the General Accounting Office with an abstract that begins "During the last several years, senior Navy officials have testified before Congress on the effects of shortages in training resources on the readiness of aviation units. This report examines one of these resources--ordnance for air-to-ground training--to assess the potential for enhancing Navy and Marine Corps tactical aviation unit readiness by improving training ordnance management. The availability of Navy and Marine training ordnance depends on an accurate requirements determination process, a procurement program that supports identified needs, and an allocation process that puts the right amount of ordnance where it is needed for training. The Navy program has problems with all three of these elements. Neither the Navy nor Marine Corps provides request data that reflect the training needs identified in its training instruction. Although both services have linked their ordnance requirements to readiness in their training instructions, neither services' request indicates that its instruction serves as the basis for identifying its needs. GAO believes each service has the knowledge and ability to develop more accurate and justifiable training ordnance requirements. Training ordnance shortages limit the amount of training and exercises aircrews can carry out and reportedly …
Date: July 27, 2001
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Modeling of Short-Pulse-Driven Nickel-Like X-Ray Lasers and Recent Experiments (open access)

Modeling of Short-Pulse-Driven Nickel-Like X-Ray Lasers and Recent Experiments

The technique of using a nsec pulse to preform and ionize the plasma followed by a psec pulse to heat the plasma has enabled low-Z nickel-like ions to achieve saturated output when driven by small lasers with less than ten joules of energy. We model experiments done using the COMET laser at LLNL and the P 102 laser at Limeil to produce Ni-like Pd and Ag lasers. The COMET experiments use a 2 J, 600 ps prepulse followed 700 psec later by a 6 J, 6 psec drive pulse in a 1.6 cm long line focus. The P102 experiments used a somewhat larger energy and were able to use different combinations of frequency doubled light for both the prepulse and short pulse drive. The LASNEX code is used to calculate the hydrodynamic evolution of the plasma and provide the temperatures and densities to the CRETIN code, which then does the kinetics calculations to determine the gain. The temporal and spatial evolution of the plasmas are studied both with and without radiation transport included to understand the role of the self photopumping process on the gain of the Ni-like 4f {yields} 4d laser lines as well as the gain of the …
Date: July 27, 2001
Creator: Nilsen, J & Dunn, J
Object Type: Article
System: The UNT Digital Library
National Ignition Facility Incorporates P2/E2 in Aqueous Parts Cleaning of Optics Hardware (open access)

National Ignition Facility Incorporates P2/E2 in Aqueous Parts Cleaning of Optics Hardware

When completed, Lawrence Livermore National Laboratory's (LLNL) National Ignition Facility (NIF) will be the world's largest laser with experimental capabilities applicable to stockpile stewardship, energy research, science and astrophysics. As construction of the conventional facilities nears completion, operations supporting the installation of specialized laser equipment have come online. Playing a critical role in the precision cleaning of mechanical parts from the NIF beamline are three pieces of aqueous cleaning equipment. Housed in the Optics Assembly Building (OAB), adjacent to NIF's laser bay, are the large mechanical parts gross cleaner (LMPGC), the large mechanical parts precision cleaner (LMPPC), and the small mechanical parts gross and precision cleaner (SMPGPC). These aqueous units, designed and built by Sonic Systems, Inc., of Newtown, Pennsylvania, not only accommodate parts that vary greatly in size, weight, geometry, surface finish and material, but also produce cleaned parts that meet the stringent NIF cleanliness standards (MIL-STD-1246C Level 83 for particles and A/10 for non-volatile residue). Each unit was designed with extensive water- and energy-conserving features, and the technology used minimizes hazardous waste generation associated with solvent wipe cleaning, the traditional method for cleaning laser mechanical components. The LMPGC provides preliminary gross cleaning for large mechanical parts. Collection, filtration …
Date: July 27, 2001
Creator: Gabor, K
Object Type: Report
System: The UNT Digital Library
NOx Control Options and Integration for US Coal Fired Boilers Quarterly Progress Report: April-June 2001 (open access)

NOx Control Options and Integration for US Coal Fired Boilers Quarterly Progress Report: April-June 2001

This is the third Quarterly Technical Report for DOE Cooperative Agreement No: DE-FC26-00NT40753. The goal of the project is to develop cost effective analysis tools and techniques for demonstrating and evaluating low NOx control strategies and their possible impact on boiler performance for firing US coals. The Electric Power Research Institute (EPRI) is providing cofunding for this program. This program contains multiple tasks and good progress is being made on all fronts. A Rich Reagent Injection (RRI) design has been developed for a cyclone fired utility boiler in which a field test of RRI will be performed later this year. Initial evaluations of RRI for PC fired boilers have been performed. Calibration tests have been developed for a corrosion probe to monitor waterwall wastage. Preliminary tests have been performed for a soot model within a boiler simulation program. Shakedown tests have been completed for test equipment and procedures that will be used to measure soot generation in a pilot scale test furnace. In addition, an initial set of controlled experiments for ammonia adsorption onto fly ash in the presence of sulfur have been performed that indicates the sulfur does enhance ammonia uptake.
Date: July 27, 2001
Creator: Bockelie, Mike; Cremer, Marc; Davis, Kevin; Hurt, Bob & Eddings, Eric
Object Type: Report
System: The UNT Digital Library
Numerical Errors: Reliable Numerical Simulations (open access)

Numerical Errors: Reliable Numerical Simulations

Understanding numerical errors in long calculations is a very subtle science and is critical to understanding the reliability of the final answer. We will carefully examine the accumulation of numerical errors over time and discuss how these can lead to reliability estimates. The primary focus will be on a newly uncovered understanding of mode resolution which is at the heart of all numerical computations.
Date: July 27, 2001
Creator: Jameson, L
Object Type: Article
System: The UNT Digital Library
Parliamentary Reference Sources: House of Representatives (open access)

Parliamentary Reference Sources: House of Representatives

This report provides an overview of the three types of parliamentary reference materials and their availability. The types are as follows: official sources such as "House Rules and Manual", publications from offices of the House and of the committees, and documents from leadership organizations and the House party. The report also provides an overview of parliamentary procedures.
Date: July 27, 2001
Creator: Carr, Thomas P.
Object Type: Report
System: The UNT Digital Library
Parliamentary Reference Sources: Senate (open access)

Parliamentary Reference Sources: Senate

This report discusses the types of Senates parliamentary reference materials and provides information on the Senate's parliamentary procedures. The three types of Senate parliamentary reference materials are official sources such as the "Senate Manual", publications from offices of the Senate and of the committees, and the rules of the party conference.
Date: July 27, 2001
Creator: Carr, Thomas P.
Object Type: Report
System: The UNT Digital Library
Radio-isotope production using laser Wakefield accelerators (open access)

Radio-isotope production using laser Wakefield accelerators

A 10 Hz, 10 TW solid state laser system has been used to produce electron beams suitable for radio-isotope production. The laser beam was focused using a 30 cm focal length f/6 off-axis parabola on a gas plume produced by a high pressure pulsed gas jet. Electrons were trapped and accelerated by high gradient wakefields excited in the ionized gas through the self-modulated laser wakefield instability. The electron beam was measured to contain excesses of 5 nC/bunch. A composite Pb/Cu target was used to convert the electron beam into gamma rays which subsequently produced radio-isotopes through (gamma, n) reactions. Isotope identification through gamma-ray spectroscopy and half-life time measurements demonstrated that Cu{sup 61} was produced which indicates that 20-25 MeV gamma rays were produced, and hence electrons with energies greater than 25-30 MeV. The production of high energy electrons was independently confirmed using a bending magnet spectrometer. The measured spectra had an exponential distribution with a 3 MeV width. The amount of activation was on the order of 2.5 uCi after 3 hours of operation at 1 Hz. Future experiments will aim at increasing this yield by post-accelerating the electron beam using a channel guided laser wakefield accelerator.
Date: July 27, 2001
Creator: Leemans, W. P.; Rodgers, D.; Catravas, P. E.; Geddes, C. G. R.; Fubiani, G.; Toth, C. et al.
Object Type: Article
System: The UNT Digital Library
Suspension of Budget Enforcement Procedures During Hostilities Abroad (open access)

Suspension of Budget Enforcement Procedures During Hostilities Abroad

Federal budget policies are enforced by two major statutes—the Congressional Budget Act of 1974 and the Balanced Budget and Emergency Deficit Control Act of 1985. The first act establishes the congressional budget process, involving the annual adoption of a budget resolution; the second act establishes discretionary spending limits and a “pay-as-you-go” (PAYGO) requirement, enforced by sequestration.
Date: July 27, 2001
Creator: Keith, Robert
Object Type: Report
System: The UNT Digital Library
TAFV Alternative Fuels and Vehicles Choice Model Documentation (open access)

TAFV Alternative Fuels and Vehicles Choice Model Documentation

A model for predicting choice of alternative fuel and among alternative vehicle technologies for light-duty motor vehicles is derived. The nested multinomial logit (NML) mathematical framework is used. Calibration of the model is based on information in the existing literature and deduction based on assuming a small number of key parameters, such as the value of time and discount rates. A spreadsheet model has been developed for calibration and preliminary testing of the model.
Date: July 27, 2001
Creator: Greene, D. L.
Object Type: Report
System: The UNT Digital Library
Texas Register, Volume 26, Number 30, Pages 5529-5714, July 27, 2001 (open access)

Texas Register, Volume 26, Number 30, Pages 5529-5714, July 27, 2001

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: July 27, 2001
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
U.S. Prisoners of War and Civilian American Citizens Captured and Interned by Japan in World War II: The Issue of Compensation by Japan (open access)

U.S. Prisoners of War and Civilian American Citizens Captured and Interned by Japan in World War II: The Issue of Compensation by Japan

None
Date: July 27, 2001
Creator: Reynolds, Gary K.
Object Type: Report
System: The UNT Digital Library