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Development of On-line Instrumentation and Techniques to Detect and Measure Particulates Quarterly Technical Progress Report Number 12
In this final quarter, we have continued to collect more field data. Here, in this report representative data collected in the field with turbine engine are presented. We also made substantial progress in calibration of standard particles using MOUDI. During the 12th quarter of this project, we collected a myriad of field data at our industrial partner's test site. These data verified the system performances. (1) The system could detect light scattering signal for all 9 wavelength lasers under different load conditions--We verified that the ELIS1024 chip could reliably collect light scattering signal from the 9 wavelength lasers, even the weakest wavelength at 355nm, thanks to our effort in improving the signal to noise ratio of the detector. (2) The data collected for each wavelength channel under the same load is consistent and repeatable--Although different wavelength channel has drastically different signal to noise ratio, after certain averages, we are able to repeat the scattering signal under the same engine conditions. (3) The data collected for each channel under different load conditions are qualitatively consistent with prediction--The data collected for each channel under different load conditions change according to the predictions. We are conducting simulation models to simulate the data and …
Date:
October 31, 2005
Creator:
Wu, Sheng; Palm, Steve; Tang, Yongchun & Goddard, William A., III
System:
The UNT Digital Library
Science & Technology Review December 2005
This month's issue has the following articles: (1) Helping NNSA Managers Chart the Future Stockpile--Commentary by Bruce T. Goodwin; (2) Modeling the Future--Livermore researchers have developed a computational tool that simulates the effects of changing demands on the nuclear weapons complex; (3) A Peculiar Burst of Stars--By combining computer simulations with optical and radio astronomical techniques, astrophysicists can better understand how stars form; (4) Exploring the Link between Diet and Cancer--Scientists combine experiments and simulations to demonstrate how food mutagens could promote hormone-sensitive cancers; and (5) When Lightning Strikes at Site 300--Electrical engineers are certifying that Livermore's Site 300 provides a safe work environment, even during a lightning storm.
Date:
October 31, 2005
Creator:
Aufderheide, M. B., III
System:
The UNT Digital Library
Generation, Transport and Deposition of Tungsten-Oxide Aerosols at 1000 C in Flowing Air-Steam Mixtures.
Experiments were conducted to measure the rates of oxidation and vaporization of pure tungsten rods in flowing air, steam and air-steam mixtures in laminar flow. Also measured were the downstream transport of tungsten-oxide condensation aerosols and their region of deposition, including plateout in the superheated flow tube, rainout in the condenser and ambient discharge which was collected on an array of sub-micron aerosol filters. The nominal conditions of the tests, with the exception of the first two tests, were tungsten temperatures of 1000 C, gas mixture temperatures of 200 C and wall temperatures of 150 C to 200 C. It was observed that the tungsten oxidation rates were greatest in all air and least in all steam, generally decreasing non-linearly with increasing steam mole fraction. The tungsten oxidation rates in all air were more than five times greater than the tungsten oxidation rates in all steam. The tungsten vaporization rate was zero in all air and increased with increasing steam mole fraction. The vaporization rate became maximum at a steam mole fraction of 0.85 and decreased thereafter as the steam mole fraction was increased to unity. The tungsten-oxide was transported downstream as condensation aerosols, initially flowing upwards from the tungsten …
Date:
October 1, 2001
Creator:
Greene, G. A. & Finfrock, C. C.
System:
The UNT Digital Library
Metabolic Engineering to Develop a Pathway for the Selective Cleavage of Carbon-Nitrogen Bonds
The objective of the project is to develop biochemical pathways for the selective cleavage of C-N bonds in molecules found in petroleum. The initial phase of the project was focused on the isolation or development of an enzyme capable of cleaving the C-N bond in aromatic amides, specifically 2-aminobiphenyl. The objective of the second phase of the research will be to construct a biochemical pathway for the selective removal of nitrogen from carbazole by combining the carA genes from Sphingomonas sp. GTIN11 with the gene(s) encoding an appropriate deaminase. The objective of the final phase of the project will be to develop derivative C-N bond cleaving enzymes that have broader substrate ranges and to demonstrate the use of such strains to selectively remove nitrogen from petroleum. During the first year of the project (October, 2002-September, 2003) enrichment culture experiments resulted in the isolation of microbial cultures that utilize aromatic amides as sole nitrogen sources, several amidase genes were cloned and were included in directed evolution experiments to obtain derivatives that can cleave C-N bonds in aromatic amides, and the carA genes from Sphingomonas sp. GTIN11, and Pseudomonas resinovorans CA10 were cloned in vectors capable of replicating in Escherichia coli. During …
Date:
October 1, 2004
Creator:
Kilbane, John J., II
System:
The UNT Digital Library
Metabolic Engineering to Develop a Pathway for the Selective Cleavage of Carbon-Nitrogen Bonds
The objective of the project is to develop a biochemical pathway for the selective cleavage of C-N bonds in molecules found in petroleum. Specifically a novel biochemical pathway will be developed for the selective cleavage of C-N bonds in carbazole. The cleavage of the first C-N bond in carbazole is accomplished by the enzyme carbazole dioxygenase, that catalyzes the conversion of carbazole to 2-aminobiphenyl-2,3-diol. The genes encoding carbazole dioxygenase were cloned from Sphingomonas sp. GTIN11 and from Pseudomonas resinovorans CA10. The selective cleavage of the second C-N bond has been challenging, and efforts to overcome that challenge have been the focus of recent research in this project. Enrichment culture experiments succeeded in isolating bacterial cultures that can metabolize 2-aminobiphenyl, but no enzyme capable of selectively cleaving the C-N bond in 2-aminobiphenyl has been identified. Aniline is very similar to the structure of 2-aminobiphenyl and aniline dioxygenase catalyzes the conversion of aniline to catechol and ammonia. For the remainder of the project the emphasis of research will be to simultaneously express the genes for carbazole dioxygenase and for aniline dioxygenase in the same bacterial host and then to select for derivative cultures capable of using carbazole as the sole source of …
Date:
October 1, 2005
Creator:
Kilbane, John J., II
System:
The UNT Digital Library
Development of a Versatile Laser-Ultrasonic System and Application to the Online Measurement for Process Control of Wall Thickness and Eccentricity of Seamless Tubes
A system for the online, non-contact measurement of wall thickness in steel seamless mechanical tubing has been developed and demonstrated at a tubing production line at the Timken Company in Canton, Ohio. The system utilizes laser-generation of ultrasound and laser-detection of time of flight with interferometry, laser-doppler velocimetry and pyrometry, all with fiber coupling. Accuracy (<1% error) and precision (1.5%) are at targeted levels. Cost and energy savings have exceeded estimates. The system has shown good reliability in measuring over 200,000 tubes in its first six months of deployment.
Date:
October 23, 2002
Creator:
Kolarik, Robert V., II
System:
The UNT Digital Library
Dimensional Measurements of Three Tubes by Computed Tomography
Low density polyethylene (LDPE), copper (Cu), and gold (Au) tubes were scanned on KCAT to identify and evaluate the impact of phase effects on quantitative object recovery. These tubes are phantoms for high energy density capsules.[Logan, et al. 2004] Digital radiographs for each tube are shown in Figure 1. The LDPE tube was scanned at 60 kV, while the Cu and the Au tubes were scanned at 140 kV. All tubes were scanned at a magnification of 3, with approximately 100-mm distance between the exit plane of the tube and the scintillator. Notice the prominence of the outer bright and inner dark edges for the LDPE tube DR, and their absence from the Cu and Au tube DRs. The bright and dark edges are a result of change in phase of the x-rays. The x-ray fluence is partly attenuated and partly refracted. The location near the outer edge of the tube appears to be more attenuating since those x-rays have refracted to locations just outside the tube. Alternatively, the added counts from the refraction result in intensities that are greater than the incident intensity effectively representing a ''negative attenuation''. This results in more counts in that location than in the …
Date:
October 5, 2004
Creator:
Schneberk, D. J.; Martz, H. E., Jr. & Brown, W. D.
System:
The UNT Digital Library
Advanced Technologies for Stripper Gas Well Enhancement
As part of Task 1 in the Advanced Technologies for Stripper Gas Well Enhancement, Schlumberger--Holditch Reservoir Technologies (H-RT) has partnered with two Appalachian Basin producers, Great Lakes Energy (formerly Range Resources) and Belden and Blake Corporation, to develop methodologies for the identification and enhancement of stripper wells with economic upside potential. These industry partners have provided data for over 700 wells in northwestern Pennsylvania. Phase 1 goals of this project are to develop and validate methodologies that can quickly and cost-effectively identify wells with enhancement potential. We are currently in the final stages of developing and testing our new Access/Excel based software and processing this well data to generate a list of potential candidate wells that can be used in Phase 2 to validate these methodologies.
Date:
October 1, 2000
Creator:
Boyer, C. M., II; Fairchild, N. R., Jr. & MacDonald, R. J.
System:
The UNT Digital Library
ADVANCED TECHNOLOGIES FOR STRIPPER GAS WELL ENHANCEMENT
As part of Phase 1 in the Advanced Technologies for Stripper Gas Well Enhancement, Schlumberger--Holditch Reservoir Technologies (H-RT) has partnered with two Appalachian Basin producers, Great Lakes Energy (formerly Range Resources) and Belden & Blake Corporation, to develop methodologies for the identification and enhancement of stripper wells with economic upside potential. These industry partners have provided data for over 700 wells in northwestern Pennsylvania. Phase 1 goals of this project are to develop and validate methodologies that can quickly and cost-effectively identify wells with enhancement potential. We are currently processing the production and well data and developing our new Access/Excel based software that incorporates our identification methodologies. Upon completion we will generate a list of potential candidate wells that can be used in Phase 2 to validate these methodologies.
Date:
October 1, 2000
Creator:
Boyer, C. M., II; Fairchild, N. R., Jr. & P.G., R.J. MacDonald
System:
The UNT Digital Library
Using Chemicals to Optimize Conformance Control in Fractured Reservoirs
This report describes work performed during the third and final year of the project, Using Chemicals to Optimize Conformance Control in Fractured Reservoirs. This research project had three objectives. The first objective was to develop a capability to predict and optimize the ability of gels to reduce permeability to water more than that to oil or gas. The second objective was to develop procedures for optimizing blocking agent placement in wells where hydraulic fractures cause channeling problems. The third objective was to develop procedures to optimize blocking agent placement in naturally fractured reservoirs.
Date:
October 29, 2001
Creator:
Seright, Randall S.; Liang, Jenn-Tai; Schrader, Richard; Hagstrom, John, II; Wang, Ying; Kumar, Ananad et al.
System:
The UNT Digital Library
Development of an Environmentally Benign Microbial Inhibitor to Control Internal Pipeline Corrosion
The overall program objective is to develop and evaluate environmentally benign agents or products that are effective in the prevention, inhibition, and mitigation of microbially influenced corrosion (MIC) in the internal surfaces of metallic natural gas pipelines. The goal is to develop one or more environmentally benign (a.k.a. ''green'') products that can be applied to maintain the structure and dependability of the natural gas infrastructure. Previous testing indicated that the growth, and the metal corrosion caused by pure cultures of sulfate reducing bacteria were inhibited by hexane extracts of some pepper plants. This quarter tests were performed to determine if chemical compounds other than pepper extracts could inhibit the growth of corrosion-associated microbes and to determine if pepper extracts and other compounds can inhibit corrosion when mature biofilms are present. Several chemical compounds were shown to be capable of inhibiting the growth of corrosion-associated microorganisms, and all of these compounds limited the amount of corrosion caused by mature biofilms to a similar extent. It is difficult to control corrosion caused by mature biofilms, but any compound that disrupts the metabolism of any of the major microbial groups present in corrosion-associated biofilms shows promise in limiting the amount/rate of corrosion.
Date:
October 30, 2004
Creator:
Bogan, Bill W.; Lamb, Brigid M. & Kilbane, John J., II
System:
The UNT Digital Library
U.S. Food and Agricultural Imports: Safeguards and Selected Issues
None
Date:
October 3, 2007
Creator:
Becker, Geoffrey S.
System:
The UNT Digital Library
Terrorism, the Future, and U.S. Foreign Policy
None
Date:
October 18, 2002
Creator:
Lee, Rensselaer & Perl, Raphael F.
System:
The UNT Digital Library
The U.S. Commission on Civil Rights: History, Funding, and Current Issues
None
Date:
October 28, 2008
Creator:
Laney, Garrine P.
System:
The UNT Digital Library
Veterans’ Health Care Issues in the 109th Congress
None
Date:
October 26, 2006
Creator:
Panangala, Sidath Viranga
System:
The UNT Digital Library
Legal Issues Relating to State Health Care Regulation: ERISA Preemption and Fair Share Laws
None
Date:
October 24, 2008
Creator:
Shimabukuro, Jon O. & Staman, Jennifer
System:
The UNT Digital Library
International Food Aid and the 2007 Farm Bill
This report discusses the reauthorization of United States food aid programs by Congress as part of the 2007 farm bill. This includes past international and domestic applications of food aid, its issues, and congressional action. Report updated on January 25, 2008.
Date:
October 31, 2007
Creator:
Hanrahan, Charles E.
System:
The UNT Digital Library
Iraq: Oil-For-Food Program, International Sanctions, and Illicit Trade
This report discusses the "oil-for-food" program (OFFP) as the centerpiece of a long-standing U.N. Security Council effort to alleviate human suffering in Iraq while maintaining key elements of the 1991 Gulf war-related sanctions regime. The program, in operation from December 1996 until March 2003, is detailed.
Date:
October 27, 2004
Creator:
Katzman, Kenneth
System:
The UNT Digital Library
India-U.S. Relations
This report summarizes India-US relations from 1947 in preparation for the 2004 National elections, including information about bilateral relations, nuclear testing, separatist movements, and human rights issues.
Date:
October 9, 2003
Creator:
Kronstadt, K. Alan
System:
The UNT Digital Library
Aviation Security Technologies and Procedures: Screening Passengers and Baggage
Following the terrorist attacks on September 11, 2001, there is intense congressional interest in improving the security screening process for airline passengers and their baggage. In the United States, screening is the responsibility of the airlines, which generally contract the work out to screening companies. The Federal Aviation Administration has regulatory authority, deploys security equipment in airports, and conducts research and development on security technology. Congress has begun to consider several bills in this area that have been introduced since the September 11 attacks, as well as Administration proposals and actions.
Date:
October 26, 2001
Creator:
Morgan, Daniel
System:
The UNT Digital Library
Importing Prescription Drugs — Comparison of the Drug Import Provisions in the Medicare Reform Bills, H.R. 2427, and Current Law
This report discusses the debate to permit the importation of FDA-approved drugs from less expensive foreign sources as the prices of prescription drugs has risen, considering issues such as cost, safety, policy, consumer protections, and international ramifications.
Date:
October 8, 2003
Creator:
Randall, Blanchard, IV; Thaul, Susan & Vogt, Donna U.
System:
The UNT Digital Library
Meat and Poultry Inspection Issues
This report discusses the U.S. Department of Agriculture's (USDA's) Food Safety and Inspection Service (FSIS) responsibility for inspecting most meat, poultry, and processed egg products for safety, wholesomeness, and proper labeling while detailing the results of congressional action in reducing the presence of pathogens and food-borne illness in facilities and food products.
Date:
October 29, 2002
Creator:
Rawson, Jean M.
System:
The UNT Digital Library
Iran: U.S. Concerns and Policy Options
Report discussing U.S. concerns with Iran, including concerns relating to endorsements given to terrorist organizations by the Iranian government, nuclear weaponry, and human rights practices.
Date:
October 4, 2006
Creator:
Katzman, Kenneth
System:
The UNT Digital Library