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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
62-TeV center of mass hadron collider with superbunch beams
The scheme of a 62-TeV center of mass p-p collider with superbunch beams at Fermilab is proposed as a practical and realistically achievable future project. It will be built in two stages, using the same tunnel, first with a 2 Tesla low field magnet collider ring and later with a 10 Tesla high field magnet collider ring. Both low and high field magnets have twin bore aperture and will be installed in the tunnel with the circumference of 87.25 km. In each bore a proton beam is accelerated, using induction cavities to increase luminosity. In the first stage they install a 7 TeV accelerator ring with operating field of 2 Tesla, based on the superferric transmission-line design. This ring will be operated at a 14-TeV center of mass collider. This will have the same energy as the LHC, but it will have 15 times higher luminosity, namely 1.5 x 10{sup 35}/cm{sup 2}/sec. The estimated synchrotron radiation is negligible with this machine. The existing Fermilab accelerator system, including the 150 GeV main injector, will be used as the injector system. Its rough cost estimation and schedule for this first stage are presented. In the second stage proton beams are accelerated, also …
Date:
November 5, 2001
Creator:
al., Ryuji Yamada et
Object Type:
Article
System:
The UNT Digital Library
80 HP PLASMA ASSISTED CATALYST SYSTEM
The US economy is linked to efficient heavy vehicle transportation and diesel remains the fuel of choice for mass transportation of goods and services. Diesel engines remain the most reliable and cost effective system for commerce. Recent deleterious effects of diesel exhaust on health and environment have led to an urgent need for cost effective technologies that would bring about reduction in NOx and PM. CARB estimates on-road diesel mobile source will contribute almost 50% NOx and 78% PM emissions by 2010. As a result recent Federal and State mandates have been adopted to reduce emissions from diesel exhaust to 1 Gm/bhp.-Hr of NOx and 0.05 Gm/bhp-hr of PM by the year 2007. The 2007 standard is to be achieved in a stepwise manner starting with the standards for 2002 namely 2 Gm/bhp-hr NOx and 0.1 Gm/bhp-hr of PM. 2002 standards are likely to be met by most engine manufacturer by some modified form of exhaust gas recirculation (EGR) system or by employing a sophisticated engine control system. Importance of cost effective technology requirement is further exaggerated by the fact that in recent years diesel engine production have increased dramatically see figure 1 and has out stripped the gasoline engine …
Date:
August 5, 2001
Creator:
Slone, Ralph
Object Type:
Article
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 31, No. 5, Ed. 1 Friday, October 5, 2001
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 5, 2001
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
1995 NPTS Databook
Policymakers rely on transportation statistics, including data on personal travel behavior, to formulate strategic transportation policies and to improve the safety and efficiency of the U.S. transportation system. Data on personal travel trends are needed to examine the reliability, efficiency, capacity, and flexibility of the Nation's transportation system to meet current demands and accommodate future demands; to assess the feasibility and efficiency of alternative congestion-alleviating technologies (e.g., high-speed rail, magnetically levitated trains, intelligent vehicle and highway systems); to evaluate the merits of alternative transportation investment programs; and to assess the energy-use and air-quality impacts of various policies. To address these data needs, the Department of Transportation (DOT) initiated an effort in 1969 to collect detailed data on personal travel. The 1969 survey was the first Nationwide Personal Transportation Survey (NPTS). The survey was conducted again in 1977, 1983, 1990, and 1995. The 1995 survey was cosponsored by four DOT agencies: Federal Highway Administration (FHWA), Bureau of Transportation Statistics (BTS), Federal Transit Administration (FTA), and National Highway Traffic Safety Administration (NHTSA). The primary objective of the survey was to collect trip-based data on the nature and characteristics of personal travel. Commercial and institutional travel were not part of the survey.
Date:
December 5, 2001
Creator:
Hu, P. S.
Object Type:
Report
System:
The UNT Digital Library
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
Africa Backgrounder: History, U.S. Policy, Principal Congressional Actions
Congressional interest in Africa seems certain to continue, not only because the region is affected by a number of serious problems, some of which could have grave humanitarian consequences, but also because of the potential Africa offers for U.S. trade and investment should these problems ease. Africa's problems and prospects will likely assure continuing constituent interest as well, stimulated in part by the churches, relief organizations, and other non-governmental organizations active on African issues. This report is intended to introduce congressional readers to the region by providing an overview of Africa's history, a summary of U.S. policy toward Africa, and a listing of principal congressional actions affecting the region. The paper concludes with suggestions for further reading and a list of selected Congressional Research Service (CRS) products.
Date:
January 5, 2001
Creator:
Copson, Raymond W.
Object Type:
Report
System:
The UNT Digital Library
AISI/DOE Technology Roadmap Program: Behavior of Phosphorus in DRI/HBI During Electric Furnace Steelmaking
Many common scrap substitutes such as direct reduced iron pellets (DRI), hot briquetted iron (HBI), iron carbide, etc., contain significantly higher levels of phosphorus steelmaking for the production of higher quality steels, control of phosphorus levels in the metal will become a concern. This study has developed a more complete understanding of the behavior of phosphorus in DRI during EAF steelmaking, through a thorough investigation of the kinetics and thermodynamics of phosphorus transfer in the EAF based upon laboratory and plant experiments and trials. Laboratory experiments have shown that phosphorus mass transfer between oxide and metallic phases within commercial direct reduced iron pellets occurs rapidly upon melting according to the local equilibrium for these phases. Laboratory kinetic experiments indicate that under certain conditions, phosphorus mass transfer between slag and metal is influenced by dynamic phenomena, which affect the mass transfer coefficient for the reaction and/or the slag metal interfacial area. Plant trials were conducted to directly evaluate the conditions of mass transfer in the electric furnace and to determine the effects of different scrap substitute materials upon the slag chemistry, the behavior of phosphorus in the steel, and upon furnace yield. The data from these trials were also used to …
Date:
October 5, 2001
Creator:
Frueham, Richard J. & Manning, Christopher P.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 125, No. 45, Ed. 1 Thursday, April 5, 2001
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
April 5, 2001
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 126, No. 6, Ed. 1 Thursday, July 5, 2001
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
July 5, 2001
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
Alcoa North American Extrusions Implements Energy Use Assessments at Multiple Facilities: Office of Industrial Technologies (OIT) BestPractices Aluminum Assessment Case Study
This case study is the latest in a series on industrial firms who are implementing energy efficient technologies and system improvements into their manufacturing processes. The case studies document the activities, savings, and lessons learned on these projects.
Date:
August 5, 2001
Creator:
Energy, U.S. Department of
Object Type:
Book
System:
The UNT Digital Library
Algorithms for deriving crystallographic space-group information. II: Treatment of special positions
Algorithms for the treatment of special positions in 3-dimensional crystallographic space groups are presented. These include an algorithm for the determination of the site-symmetry group given the coordinates of a point, an algorithm for the determination of the exact location of the nearest special position, an algorithm for the assignment of a Wyckoff letter given the site-symmetry group, and an alternative algorithm for the assignment of a Wyckoff letter given the coordinates of a point directly. All algorithms are implemented in ISO C++ and are integrated into the Computational Crystallography Toolbox. The source code is freely available.
Date:
October 5, 2001
Creator:
Grosse-Kunstleve, Ralf W. & Adams, Paul D.
Object Type:
Article
System:
The UNT Digital Library
Allocations and Subdivisions in the Congressional Budget Process
This report briefly explains how the annual budget resolution sets forth total spending and revenue levels, which are then allocated to the appropriate House and Senate committees, which in turn help Congress determine how best to enforce spending once a budget resolution is adopted.
Date:
March 5, 2001
Creator:
Heniff, Bill, Jr.
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 101, No. 254, Ed. 1 Friday, January 5, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 5, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 280, Ed. 1 Monday, February 5, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 5, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 304, Ed. 1 Monday, March 5, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 5, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 19, Ed. 1 Thursday, April 5, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 5, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 71, Ed. 1 Tuesday, June 5, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 5, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 97, Ed. 1 Thursday, July 5, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 5, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 133, Ed. 1 Sunday, August 5, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 5, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 160, Ed. 1 Wednesday, September 5, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 5, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 186, Ed. 1 Friday, October 5, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 5, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 212, Ed. 1 Monday, November 5, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 5, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 103, No. 238, Ed. 1 Wednesday, December 5, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 5, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History