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3-D Measurement of Deformation Microstructure of Al(0.2%)Mg Using Submicron Resolution White X-Ray Microbeams
We have used submicron-resolution white x-ray microbeams on the MHATT-CAT beamline 7-ID at the Advanced Photon Source to develop techniques for three-dimensional investigation of the deformation microstructure in a 20% plane strain compressed Al(0.2%)Mg tri-crystal. Kirkpatrick-Baez mirrors were used to focus white radiation from an undulator to a 0.7 x 0.7 {micro}m{sup 2} beam that was scanned over bi- and tri-crystal regions near the triple-junction of the tri-crystal. Depth resolution along the x-ray microbeam of less than 5 microns was achieved by triangulation to the diffractibn source point using images taken at a series of CCD distances from the microbeam. Computer indexing of the deformation cell structure in the bi-crystal region provided orientations of individual subgrains to {approximately}0.01 degrees, making possible detailed measurements of the rotation axes between individual cells.
Date:
November 29, 1999
Creator:
Larson, B. C.; tamura, N.; Chung, J.-S.; Ice, G. E.; Budai, J. D.; Tischler, J. Z. et al.
Object Type:
Article
System:
The UNT Digital Library
AZ-101 Mixer Pump Demonstration Data Acquisition System and Gamma Cart Data Acquisition Control System Software Configuration Management Plan
This Software Configuration Management Plan (SCMP) provides the instructions for change control of the AZ1101 Mixer Pump Demonstration Data Acquisition System (DAS) and the Sludge Mobilization Cart (Gamma Cart) Data Acquisition and Control System (DACS).
Date:
December 29, 1999
Creator:
White, D. A.
Object Type:
Report
System:
The UNT Digital Library
241-Z-361 Sludge Characterization Sampling and Analysis Plan
This sampling and analysis plan (SAP) identifies the type, quantity, and quality of data needed to support characterization of the sludge that remains in Tank 241-2-361. The procedures described in this SAP are based on the results of the 241-2-361 Sludge Characterization Data Quality Objectives (DQO) (BWHC 1999) process for the tank. The primary objectives of this project are to evaluate the contents of Tank 241-2-361 in order to resolve safety and safeguards issues and to assess alternatives for sludge removal and disposal.
Date:
July 29, 1999
Creator:
BANNING, D.L.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 28, No. 15, Ed. 1 Friday, January 29, 1999
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
January 29, 1999
Creator:
Pace, Joshua
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 28, No. 33, Ed. 1 Thursday, July 29, 1999
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
July 29, 1999
Creator:
Pace, Joshua
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 29, No. 8, Ed. 1 Friday, October 29, 1999
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 29, 1999
Creator:
Ming, Holly
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
2000 Census: Local Address Review Program Has Had Mixed Results to Date
Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the implementation of the Local Update of Census Addresses (LUCA) program, focusing on: (1) the Bureau of the Census' operational experience to date in implementing LUCA; and (2) local governments' views of the adequacy of local resources to conduct LUCA and of the quality of materials and assistance the Bureau has provided."
Date:
September 29, 1999
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Acceleration amplifications in nif structures subjected to earthquake base motions
NIF technical staff have questioned the possibility of obtaining acceleration amplifications (i.e. amplification of the ground acceleration values) in a structure which are significantly higher than the acceleration amplification exhibited across the period range in the input response spectrum. This note utilizes a simple example to illustrate that the acceleration amplification resulting from the dynamic response of a structural system can indeed be significantly higher than the amplifications indicated in the response spectrum, and that the GEMINI program is computing the appropriate acceleration levels for a simple MDOF system.
Date:
November 29, 1999
Creator:
McCallen, D.
Object Type:
Report
System:
The UNT Digital Library
Acceleration of Polarized Protons to High Energy.
High energy polarized beam collisions will open up the unique physics opportunities of studying spin effects in hard processes. However, the acceleration of polarized beams in circular accelerators is complicated by the numerous depolarizing spin resonances. Using a partial Siberian Snake and a rf dipole that ensure stable adiabatic spin motion during acceleration has made it possible to accelerate polarized protons to 25 GeV at the Brookhaven AGS. Full Siberian Snakes and polarimeters are being developed for RHIC to make the acceleration of polarized protons to 250 GeV possible. A similar scheme is being studied for the 800 GeV HERA proton accelerator.
Date:
March 29, 1999
Creator:
Roser, T.
Object Type:
Article
System:
The UNT Digital Library
Acceleration Stages for a Muon Collider.
None
Date:
March 29, 1999
Creator:
Berg, J. S.
Object Type:
Article
System:
The UNT Digital Library
Adiabatic Excitation of Longitudinal Bunch Shape Oscillations.
By modulating the rf voltage at near twice the synchrotron frequency we are able to modulate the longitudinal bunch shape. We show experimentally that this can be done while preserving the longitudinal emittance when the rf voltage modulation is turned on adiabatically. Experimental measurements will be presented along with theoretical predictions.
Date:
March 29, 1999
Creator:
Bai, M.; Brown, K.; Fischer, W.; Roser, T.; Smith, K.; Tsoupas, N. et al.
Object Type:
Article
System:
The UNT Digital Library
Advanced Combustor Design Concept to Control NOx and Air Toxics: Final Technical Report
Direct coal combustion needs to be a primary energy source for the electric utility industry and for heavy manufacturing during the next several decades because of the availability and economic advantage of coal relative to other fuels and because of the time required to produce major market penetration in the energy field. However, the major obstacle to coal utilization is a set of ever-tightening environmental regulations at both the federal and local level. It is, therefore, critical that fundamental research be conducted to support the development of low-emission, high-efficiency pulverized coal power systems. The objective of this program was to develop fundamental understanding regarding the impact of fuel and combustion changes on NOx formation, carbon burnout and air toxic emissions from pulverized coal (pc) combustion. During pc combustion, nitrogen in the coal can be oxidized to form nitrogen oxides (NO{sub x}). The 1990 Clean Air Act Amendments established much stricter NO{sub x} emissions limits for new and existing coal-fired plants, so there has been renewed interest in the processes by which NO{sub x} forms in pc flames. One of the least understood aspects of NO{sub x} formation from pc combustion is the process by which char-N (nitrogen remaining in the …
Date:
March 29, 1999
Creator:
Eddings, Eric G.; Pershing, David W.; Molina, Alejandro; Sarofim, Adel F.; Spinti, Jennifer P. & Veranth, John
Object Type:
Report
System:
The UNT Digital Library
Advanced Eddy current NDE steam generator tubing.
As part of a multifaceted project on steam generator integrity funded by the U.S. Nuclear Regulatory Commission, Argonne National Laboratory is carrying out research on the reliability of nondestructive evaluation (NDE). A particular area of interest is the impact of advanced eddy current (EC) NDE technology. This paper presents an overview of work that supports this effort in the areas of numerical electromagnetic (EM) modeling, data analysis, signal processing, and visualization of EC inspection results. Finite-element modeling has been utilized to study conventional and emerging EC probe designs. This research is aimed at determining probe responses to flaw morphologies of current interest. Application of signal processing and automated data analysis algorithms has also been addressed. Efforts have focused on assessment of frequency and spatial domain filters and implementation of more effective data analysis and display methods. Data analysis studies have dealt with implementation of linear and nonlinear multivariate models to relate EC inspection parameters to steam generator tubing defect size and structural integrity. Various signal enhancement and visualization schemes are also being evaluated and will serve as integral parts of computer-aided data analysis algorithms. Results from this research will ultimately be substantiated through testing on laboratory-grown and in-service-degraded tubes.
Date:
March 29, 1999
Creator:
Bakhtiari, S.
Object Type:
Article
System:
The UNT Digital Library
Advanced Fingerprint Analysis Project Fingerprint Constituents
The work described in this report was focused on generating fundamental data on fingerprint components which will be used to develop advanced forensic techniques to enhance fluorescent detection, and visualization of latent fingerprints. Chemical components of sweat gland secretions are well documented in the medical literature and many chemical techniques are available to develop latent prints, but there have been no systematic forensic studies of fingerprint sweat components or of the chemical and physical changes these substances undergo over time.
Date:
October 29, 1999
Creator:
Mong, GM; Petersen, CE & Clauss, TRW
Object Type:
Report
System:
The UNT Digital Library
Age-Related Degradation of Nuclear Power Plant Structures and Components
This paper summarizes and highlights the results of the initial phase of a research project on the assessment of aged and degraded structures and components important to the safe operation of nuclear power plants (NPPs). A review of age-related degradation of structures and passive components at NPPs was performed. Instances of age-related degradation have been collected and reviewed. Data were collected from plant generated documents such as Licensing Event Reports, NRC generic communications, NUREGs and industry reports. Applicable cases of degradation occurrences were reviewed and then entered into a computerized database. The results obtained from the review of degradation occurrences are summarized and discussed. Various trending analyses were performed to identify which structures and components are most affected, whether degradation occurrences are worsening, and what was the most common aging mechanisms. The paper also discusses potential aging issues and degradation-susceptible structures and passive components which would have the greatest impact on plant risk.
Date:
March 29, 1999
Creator:
Braverman, J.; Chang, T.-Y.; Chokshi, N.; Hofmayer, C.; Morante, R. & Shteyngart, S.
Object Type:
Article
System:
The UNT Digital Library
AGE-RELATED DEGRADATION OF NUCLEAR POWER PLANT STRUCTURES AND COMPONENTS.
This paper summarizes and highlights the results of the initial phase of a research project on the assessment of aged and degraded structures and components important to the safe operation of nuclear power plants (NPPs). A review of age-related degradation of structures and passive components at NPPs was performed. Instances of age-related degradation have been collected and reviewed. Data were collected from plant generated documents such as Licensing Event Reports, NRC generic communications, NUREGs and industry reports. Applicable cases of degradation occurrences were reviewed and then entered into a computerized database. The results obtained from the review of degradation occurrences are summarized and discussed. Various trending analyses were performed to identify which structures and components are most affected, whether degradation occurrences are worsening, and what are the most common aging mechanisms. The paper also discusses potential aging issues and degradation-susceptible structures and passive components which would have the greatest impact on plant risk.
Date:
March 29, 1999
Creator:
BRAVERMAN,J.
Object Type:
Article
System:
The UNT Digital Library
Agriculture: Bioconversion of sugar cane molasses
Auxein Corporation is demonstrating for commercial use an organic acid phytochelate, derived from what would otherwise be a discarded portion of sugar cane, that could increase the domestic sugar industry's profit margin from near zero to 7%. Along with helping a struggling industry, the phytochelate will bring substantial improvements to crop and tree production and greatly reduce the environmental threat posed by nitrogen-based fertilizers. Currently, the amount of fertilizer used produces harmful levels of run-off that contaminates ground water with unwanted nitrogen. By utilizing organic acid phytochelates, which assist plant growth by unlocking minerals stored in soil, fertilizer use can be dramatically reduced. This would improve crop yields, remove environmental threats to ground water, and cut fertilizer costs by as much as 50%.
Date:
September 29, 1999
Creator:
Simon, P.
Object Type:
Book
System:
The UNT Digital Library
AGS Resonant Extraction With High Intensity Beams.
The Brookhaven AGS third integer resonant extraction system allows the AGS to provide high quality, high intensity 25.5 GeV/c proton beams simultaneously to four target stations and as many as 8 experiments. With the increasing intensities (over 7 x 10{sup 13} protons/pulse) and associated longer spill periods (2.4 to 3 seconds long), we continue to run with low losses and high quality low modulation continuous current beams.[1] Learning to extract and transport these higher intensity beams has required a process of careful modeling and experimentation. We have had to learn how to correct for various instabilities and how to better match extraction and the transport lines to the higher emittance beams being accelerated in the AGS. Techniques employed include ''RF'' methods to smooth out momentum distributions and fine structure. We will present results of detailed multi-particle tracking modeling studies which enabled us to develop a clear understanding of beam loss mechanisms in the transport and extraction process. We will report on our status, experiences, and the present understanding of the intensity limitations imposed by resonant extraction and transport to fixed target stations.
Date:
March 29, 1999
Creator:
Ahrens, L.; Brown, K.; Glenn, J. W.; Roser, T.; Tsoupas, N. & Vanasselt, W.
Object Type:
Article
System:
The UNT Digital Library
Air Force Supply: Management Actions Create Spare Parts Shortages and Operations Problems
A chapter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the effectiveness of the Air Force Supply Management Activity Group in meeting its military customers needs, focusing on the: (1) extent and impact of military customers not receiving aircraft spare parts when needed; and (2) reasons why parts were not always available when needed."
Date:
April 29, 1999
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 123, No. 48, Ed. 1 Thursday, April 29, 1999
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
April 29, 1999
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 124, No. 9, Ed. 1 Thursday, July 29, 1999
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
July 29, 1999
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
Alternative Fuel News, Vol. 3 No. 3
The alternative fuel industry is heating up. It is a very exciting time to be in the energy business, especially when it comes to transportation. Celebrating of the milestone 75th Clean Cities coalition and kick off of the new Federal Alternative Fuel Vehicle (AFV) USER Program is occurring in cities across the country. Clean Energy for the 21st Century and the events that are happening during Energy Awareness Month are covered in this issue. Spotlighted are niche markets; several airports across the country are successfully incorporating alternative fuels into their daily routines.
Date:
October 29, 1999
Creator:
DOE, Clean Cities Program at
Object Type:
Book
System:
The UNT Digital Library
An Alternative Lattice for the Spallation Neutron Source Accumulator Ring.
As a key component of the Spallation Neutron Source (SNS) Project, the Accumulator Ring will collect the proton beam from the SNS LINAC at an intensity of 2 x 10{sup 14} per pulse at 60 Hz for a total power of 2 MW, exceeding present performance value of existing facilities. Requirements of minimum beam loss for hands-on maintenance and flexibility for future upgrade are essential for the lattice design. In this paper, we study an alternative lattice emphasizing various injection schemes and flexibility for future upgrade. Working points, sextupole families for chromaticity control, and alternate extraction schemes are also considered.
Date:
March 29, 1999
Creator:
Gardner, C. J.; Lee, Y. Y.; Tsoupas, N. & Wei, J.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 99, No. 274, Ed. 1 Friday, January 29, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 29, 1999
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History