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MAPPING INDUCED POLARIZATION WITH NATURAL ELECTROMAGNETIC FIELDS FOR EXPLORATION AND RESOURCES CHARACTERIZATION BY THE MINING INDUSTRY
In this first quarter we made an organizational change in the project that should allow us to more easily meet the project milestones. This change consists of designing a new systems that will allow to simplify field operation and reduce survey costs. The new system design has been completed and we are in the process of completing the manufacture and test of the first prototype. Production of the final system for the survey should be completed by end of July. The new acquisition and processing software is in progress and will be ready by the end of July. The new processing software will include the robust processing developed by Larsen and Egbert.
Date:
April 15, 2001
Creator:
Nichols, Edward
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Police Interview]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 15, 2001
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Puffy Arrest]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 15, 2001, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Royal Lane]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 15, 2001, 10:00 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Royal Lane]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 15, 2001, 10:00 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Serial rapist]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 15, 2001, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Oral History Interview with Roy Sistos, April 15, 2001
Interview with Roy Sistos, an infantryman in the US Marine Corps during Korea. He answers questions about his service to the military and life during the war abroad.
Date:
April 15, 2001
Creator:
Flores, Jessica & Sistos, Roy
Object Type:
Sound
System:
The Portal to Texas History
The Panola Watchman (Carthage, Tex.), Vol. 128, No. 31, Ed. 1 Sunday, April 15, 2001
Semiweekly newspaper from Carthage, Texas that includes local, state, and national news along with advertising.
Date:
April 15, 2001
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 86, No. 182, Ed. 1 Sunday, April 15, 2001
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 15, 2001
Creator:
Quinnelly, Lorrie J.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Seminole Sentinel (Seminole, Tex.), Vol. 94, No. 52, Ed. 1 Sunday, April 15, 2001
Semiweekly newspaper from Seminole, Texas that includes local, state, and national news along with extensive advertising.
Date:
April 15, 2001
Creator:
Dow, M. Gene & Fisher, David
Object Type:
Newspaper
System:
The Portal to Texas History
Structural aspects of the fivefold quasicrystalline Al-Cu-Fe surface from STM and dynamical LEED Studies
We investigate the atomic structure of the fivefold surface of an icosahedral Al-Cu-Fe alloy, using scanning tunneling microscopy (STM) imaging and a special dynamical low energy-electron diffraction (LEED) method. STM indicates that the step heights adopt (primarily) two values in the ratio of tau, but the spatial distribution of these two values does not follow a Fibonacci sequence, thus breaking the ideal bulk-like quasicrystalline layer stacking order perpendicular to the surface. The appearance of screw dislocations in the STM images is another indication of imperfect quasicrystallinity. On the other hand, the LEED analysis, which was successfully applied to Al-Pd-Mn in a previous study, is equally successful for Al-Cu-Fe. Similar structural features are found for both materials, in particular for interlayer relaxations and surface terminations. Although there is no structural periodicity, there are clear atomic planes in the bulk of the quasicrystal, some of which can be grouped in recurring patterns. The surface tends to form between these grouped layers in both alloys. For Al-Cu-Fe, the step heights measured by STM are consistent with the thicknesses of the grouped layers favored in LEED. These results suggest that the fivefold Al-Cu-Fe surface exhibits a quasicrystalline layering structure, but with stacking defects.
Date:
April 15, 2001
Creator:
Cai, T.; Shi, F.; Shen, Z.; Gierer, M.; Goldman, A. I.; Kramer, M. J. et al.
Object Type:
Article
System:
The UNT Digital Library
ULTRA-LIGHTWEIGHT CEMENT
The objective of this project is to develop an improved ultra-lightweight cement using ultralight hollow glass spheres (ULHS). Work reported herein addresses Task 1: Assess Ultra-Lightweight Cementing Problems and Task 3: Test Ultra-Lightweight Cements. Results reported this quarter include a review and summary of Halliburton Energy Services (HES) and BJ Services historical performance data for lightweight cement applications. These data are analyzed and compared to ULHS cement and foamed cement performances. Similar data is expected from Schlumberger, and an analysis of this data will be completed in the following phases of the project. Quality control testing of materials used to formulate ULHS cements in the laboratory was completed to establish baseline material performance standards. A testing protocol was developed employing standard procedures as well as procedures tailored to evaluate ULHS and foamed cement. This protocol is presented and discussed. Results of further testing of ULHS cements are presented along with an analysis to establish cement performance design criteria to be used during the remainder of the project. Finally, a list of relevant literature on lightweight cement performance is compiled for review during the next quarter.
Date:
April 15, 2001
Creator:
Sabins, Fred
Object Type:
Report
System:
The UNT Digital Library
[Wheeler Avenue Baptist Church Bulletin: April 15, 2001]
Church bulletin listing the order of worship for the 7:30 and 11:00 Sunday morning services at the Wheeler Avenue Baptist Church, as well as various notes about upcoming events, congregational news, and other information of relevance to church members.
Date:
April 15, 2001
Creator:
Wheeler Avenue Baptist Church (Houston, Tex.)
Object Type:
Pamphlet
System:
The Portal to Texas History
Advances in Low-Defect Multilayers for EUVL Mask Blanks
Low-defect multilayer coatings are required to fabricate mask blanks for Extreme Ultraviolet Lithography (EUVL). The mask blanks consist of high reflectance E W multilayers on low thermal expansion substrates. A defect density of 0.0025 printable defects/cm{sup 2} for both the mask substrate and the multilayer is required to provide a mask blank yield of 60%. Current low defect multilayer coating technology allows repeated coating-added defect levels of 0.05/cm{sup 2} for defects greater than 90 nm polystyrene latex sphere (PSL) equivalent size for lots of 20 substrates. Extended clean operation of the coating system at levels below 0.08/cm{sup 2} for 3 months of operation has also been achieved. Two substrates with zero added defects in the quality area have been fabricated, providing an existence proof that ultra low defect coatings are possible. Increasing the ion source-to-target distance from 410 to 560 mm to reduce undesired coating of the ion source caused the defect density to increase to 0.2/cm{sup 2}. Deposition and etching diagnostic witness substrates and deposition pinhole cameras showed a much higher level of ion beam spillover (ions missing the sputter target) than expected. Future work will quantify beam spillover, and test designs to reduce spillover, if it is confirmed …
Date:
April 15, 2002
Creator:
Folta, J. A.; Davidson, J. C.; Larson, C. C.; Walton, C. C. & Kearney, P. A.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 104, No. 26, Ed. 1 Monday, April 15, 2002
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 15, 2002
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Sun (Alvin, Tex.), Vol. 111, No. 31, Ed. 1 Monday, April 15, 2002
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
April 15, 2002
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 80, No. 140, Ed. 1 Monday, April 15, 2002
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
April 15, 2002
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
BOILER MATERIALS FOR ULTRASUPERCRITICAL COAL POWER PLANTS
The principal objective of this project is to develop materials technology for use in ultrasupercritical (USC) plant boilers capable of operating with 760 C (1400 F), and up to 5500 psi with emphasis upon 35 MPa (5000 psi) steam. In the 21st century, the world faces the critical challenge of providing abundant, cheap electricity to meet the needs of a growing global population while at the same time preserving environmental values. Most studies of this issue conclude that a robust portfolio of generation technologies and fuels should be developed to assure that the United States will have adequate electricity supplies in a variety of possible future scenarios. The use of coal for electricity generation poses a unique set of challenges. On the one hand, coal is plentiful and available at low cost in much of the world, notably in the U.S., China, and India. Countries with large coal reserves will want to develop them to foster economic growth and energy security. On the other hand, traditional methods of coal combustion emit pollutants and CO{sub 2} at high levels relative to other generation options. Maintaining coal as a generation option in the 21st century will require methods for addressing these environmental …
Date:
April 15, 2002
Creator:
Viswanathan, R.
Object Type:
Report
System:
The UNT Digital Library
Clean Air Act Issues in the 107th Congress
In the 107th Congress, the most prominent air quality issue has been whether state and federal regulations designed to protect air quality are having a negative impact on energy production, and, if so, whether legislation should be enacted to reform such regulations. The early discussion focused primarily on California, but with the release of the Administration’s energy policy recommendations in May 2001 and subsequent congressional action, attention shifted to issues more national in scope.
Date:
April 15, 2002
Creator:
McCarthy, James E.
Object Type:
Report
System:
The UNT Digital Library
Daily Journal (Perry, Okla.), Vol. 109, No. 75, Ed. 1 Monday, April 15, 2002
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 15, 2002
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Design, operational experiences and beam results obtained with the SNS H- ion source and LEBT at Berkeley Lab
The ion source and Low-Energy Transport (LEBT) system that will provide H{sup -} ion beams to the Spallation Neutron Source (SNS)** Front End and the accelerator chain have been developed into a mature unit that fully satisfies the operational requirements through the commissioning and early operating phases of SNS. Compared to the early R&D version, many features of the ion source have been improved, and reliable operation at 6% duty factor has been achieved producing beam currents in the 35-mA range and above. LEBT operation proved that the purely electrostatic focusing principle is well suited to inject the ion beam into the RFQ accelerator, including the steering and pre-chopping functions. This paper will discuss the latest design features of the ion source and LEBT, give performance data for the integrated system, and report on commissioning results obtained with the SNS RFQ and Medium-Energy Beam Transport (MEBT) system. Prospects for further improvements will be outlined in concluding remarks.
Date:
April 15, 2002
Creator:
Keller, R.; Thomae, R.; Stockli, M. & Welton, R.
Object Type:
Article
System:
The UNT Digital Library
Disruption of NBS1 gene leads to early embryonic lethality in homozygous null mice and induces specific cancer in heterozygous mice
Nijmegen breakage syndrome (NBS) is a rare autosomal recessive chromosome instability syndrome characterized by microcephaly, growth retardation, immunodeficiency, and cancer predisposition, with cellular features similar to that of ataxia telangiectasia (AT). NBS results from mutations in the mammalian gene Nbs1 that codes for a 95-kDa protein called nibrin, NBS1, or p95. To establish an animal model for NBS, we attempted to generate NBS1 knockout mice. However, NBS1 gene knockouts were lethal at an early embryonic stage. NBS1 homozygous(-/-) blastocyst cells cultured in vitro showed retarded growth and subsequently underwent growth arrest within 5 days of culture. Apoptosis, assayed by TUNEL staining, was observed in NBSI homozygous(-/-) blastocyst cells cultured for four days. NBSI heterozygous(+/-) mice were normal, and exhibited no specific phenotype for at least one year. However, fibroblast cells from NBSI heterozygous(+/-) mice displayed an enhanced frequency of spontaneous transformation to anchorage-independent growth as compared to NBS1 wild-type(+/+) cells. Furthermore, heterozygous(+/-) mice exhibited a high incidence of hepatocellular carcinoma after one year compared to wild-type mice, even though no significant differences in the incidence of other tumors such as lung adenocarcinoma and lymphoma were observed. Taken together, these results strongly suggest that NBS1 heterozygosity and reduced NBSI expression induces …
Date:
April 15, 2002
Creator:
Kurimasa, Akihiro; Burma, Sandeep; Henrie, Melinda; Ouyang, Honghai; Osaki, Mitsuhiko; Ito, Hisao et al.
Object Type:
Report
System:
The UNT Digital Library
District of Columbia: Performance Report Reflects Progress and Opportunities for Improvement
A letter report issued by the General Accounting Office with an abstract that begins "This report examines the progress the District of Columbia has made with its fiscal year 2001 performance accountability report and highlights continuing challenges facing our nation's capital. The District must submit a performance accountability plan with goals for the coming fiscal year and, at the end of the fiscal year, a performance accountability report on the extent to which it achieved these goals. GAO found that the District's Performance Accountability Report for Fiscal Year 2001 provided a more complete picture of its performance and made progress in complying with statutory reporting requirements by using a consistent set of goals. This allowed the District to measure and report progress toward the goals in its 2001 performance plan. Specifically, it reported information on the level of performance achieved, the titles of managers and their supervisors responsible for each goal, and described the status of certain court orders. The District has made progress over the last three years in its performance accountability reports and established positive direction for enhancements in court orders, its fiscal year 2003 performance based budgeting pilots, and performance goals and measures."
Date:
April 15, 2002
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Documentation for FY2002 BTS GPRA Metrics
PNNL estimated the FY2002 energy, environmental, and financial benefits (i.e., metrics) of the technologies and practices in the U.S. Department of Energy's (DOE's) Office of Building Technology, State and Community Programs (BTS). BTS uses the estimates of benefits as part of its annual budget request. This report includes an overview of the analytical approaches used to estimate energy savings for the FY2002 appropriated budget for BTS. The report also includes descriptions of key assumptions and the methodology that is used to calculate energy savings estimates for each BTS program.
Date:
April 15, 2002
Creator:
Hostick, Donna J.; Belzer, David B.; Cort, Katherine A. & Dirks, James A.
Object Type:
Report
System:
The UNT Digital Library