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Canaveral ODMDS Dredged Material Erosion Rate Analysis
In this study, the erosion properties of four sediments related to the Canaveral Ocean Dredged Material Disposal Site have been determined as a function of density, consolidation, and shear stress by means of a high shear stress sediment erosion flume at Sandia National Laboratories. Additional analysis was completed for each sediment to determine mineralogy, particle size, and organic content. This was done to support numerical modeling efforts, aid in effective management, and minimize environmental impact. The motivation for this work is based on concerns of dredged material transporting beyond the designated site and estimates of site capacity.
Date:
July 1, 2001
Creator:
Jepsen, Richard A.; Roberts, Jesse D.; Lucero, Amy L. & CHAPIN, D. MICHAEL, JR.
Object Type:
Report
System:
The UNT Digital Library
Canyon of the Eagles: Close to Nature
Draft of an article published in the July 2001 issue of Texas Highways magazine about Canyon of the Eagles Lodge & Nature Park in Burnet, Texas.
Date:
2001-07~
Creator:
Mallory, Randy
Object Type:
Text
System:
The UNT Digital Library
[Canyon of the Eagles research]
Research for an article published in the July 2001 issue of Texas Highways magazine about Canyon of the Eagles Lodge & Nature Park in Burnet, Texas.
Date:
July 2001
Creator:
Mallory, Randy
Object Type:
Text
System:
The UNT Digital Library
[Canyon of the Eagles resources]
Resources for an article published in the July 2001 issue of Texas Highways magazine about Canyon of the Eagles Lodge & Nature Park in Burnet, Texas.
Date:
2001-07~
Creator:
Mallory, Randy
Object Type:
Text
System:
The UNT Digital Library
CARBON DIOXIDE CAPTURE FROM FLUE GAS USING DRY REGENERABLE SORBENTS
Sodium based sorbents including sodium carbonate may be used to capture carbon dioxide from flue gas. A relatively concentrated carbon dioxide stream may be recoverable for sequestration when the sorbent is regenerated. Electrobalance tests indicated that sodium carbonate monohydrate was formed in a mixture of helium and water vapor at temperatures below 65 C. Additional compounds may also form, but this could not be confirmed. In the presence of carbon dioxide and water vapor, both the initial reaction rate of sodium carbonate with carbon dioxide and water and the sorbent capacity decreased with increasing temperature, consistent with the results from the previous quarter. Increasing the carbon dioxide concentration at constant temperature and water vapor concentration produced a measurable increase in rate, as did increasing the water vapor concentration at constant carbon dioxide concentration and temperature. Runs conducted with a flatter TGA pan resulted in a higher initial reaction rate, presumably due to improved gas-solid contact, but after a short time, there was no significant difference in the rates measured with the different pans. Analyses of kinetic data suggest that the surface of the sodium carbonate particles may be much hotter than the bulk gas due to the highly exothermic reaction …
Date:
July 1, 2001
Creator:
Green, David A.; Turk, Brian S.; Gupta, Raghubir P.; Lopez-Ortiz, Alejandro; Harrison, Douglas P. & Liang, Ya
Object Type:
Report
System:
The UNT Digital Library
Catalog of the University of North Texas, 2001-2002, Graduate
The UNT Graduate Bulletin includes information about class offerings as well as general information about the university (academic calendar, admissions and degree requirements, financial information, etc.) about research, and about the colleges and schools on campus. Index starts on page 451.
Date:
July 2001
Creator:
University of North Texas
Object Type:
Book
System:
The UNT Digital Library
Catalog of the University of North Texas, 2001-2002, Undergraduate
The UNT Undergraduate Bulletin includes information about class offerings as well as general information about the university (academic calendar, admissions and degree requirements, financial information, etc.) about research, and about the colleges and schools on campus. Index starts on page 491.
Date:
July 2001
Creator:
University of North Texas
Object Type:
Book
System:
The UNT Digital Library
A CHARACTERIZATION METHODOLOGY FOR POST-WILDFIRE FLOOD HAZARD ASSESSMENTS
None
Date:
July 1, 2001
Creator:
LIN, S. G. MC; EECKHOUT, M. E. VAN & AL, ET
Object Type:
Article
System:
The UNT Digital Library
Characterization of the Air Source and the Plume Source at FLAME
None
Date:
July 1, 2001
Creator:
BLANCHAT,THOMAS K.
Object Type:
Report
System:
The UNT Digital Library
Chemical Compatibility Testing Final Report Including Test Plans and Procedures
This report provides an independent assessment of information on mixed waste streams, chemical compatibility information on polymers, and standard test methods for polymer properties. It includes a technology review of mixed low-level waste (LLW) streams and material compatibilities, validation for the plan to test the compatibility of simulated mixed wastes with potential seal and liner materials, and the test plan itself. Potential packaging materials were reviewed and evaluated for compatibility with expected hazardous wastes. The chemical and physical property measurements required for testing container materials were determined. Test methodologies for evaluating compatibility were collected and reviewed for applicability. A test plan to meet US Department of Energy and Environmental Protection Agency requirements was developed. The expected wastes were compared with the chemical resistances of polymers, the top-ranking polymers were selected for testing, and the most applicable test methods for candidate seal and liner materials were determined. Five recommended solutions to simulate mixed LLW streams are described. The test plan includes descriptions of test materials, test procedures, data collection protocols, safety and environmental considerations, and quality assurance procedures. The recommended order of testing to be conducted is specified.
Date:
July 1, 2001
Creator:
Nimitz, Jonathan S.; Allred, Ronald E.; Gordon, Brent W.; Nigrey, Paul J. & Mcconnell, Paul E.
Object Type:
Report
System:
The UNT Digital Library
The Christian Chronicle (Oklahoma City, Okla.), Vol. 58, No. 7, Ed. 1, July 2001
Monthly newspaper from Oklahoma City, Oklahoma that includes news and information about the Churches of Christ along with advertising.
Date:
July 2001
Creator:
McBride, Bailey & LaMascus, R. Scott
Object Type:
Newspaper
System:
The Portal to Texas History
A Chronological Reliability Model to Assess Operating Reserve Allocation to Wind Power Plants: Preprint
As the use of wind power plants increases worldwide, it is important to understand the effect these power sources have on the operations of the grid. This paper focuses on the operating reserve impact of wind power plants. Many probabilistic methods have been applied to power system analysis, and some of these are the basis of reliability analysis. This paper builds on a probabilistic technique to allocate the operating reserve burden among power plants in the grid. The method was originally posed by Strbac and Kirschen [1] and uses an allocation that prorates the reserve burden based on expected energy not delivered. Extending this method to include wind power plants allows the reserve burden to be allocated among different plants using the same method, yet incorporates information about the intermittent nature of wind power plants.
Date:
July 1, 2001
Creator:
Milligan, M. R.
Object Type:
Article
System:
The UNT Digital Library
Church & Synagogue Libraries, Volume 35, Number 1, July/August 2001
Bimonthly publication of the Church and Synagogue Library Association, containing news and events related to the organization and its members, reviews of books and other materials, and stories of interest to the management of congregational libraries.
Date:
July 2001
Creator:
Church and Synagogue Library Association
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Closure Report for Corrective Action Unit 230: Area 22 Sewage Lagoons and Corrective Action Unit 320: Area 22 Desert Rock Airport Strainer Box Nevada Test Site, Nevada
This Closure Report (CR) describes the remediation activities performed and the results of verification sampling conducted at Corrective Action Unit (CAU) 230, Area 22 Sewage Lagoons and CAU 320, Area 22 Desert Rock Airport Strainer Box. The CAU is currently listed in Appendix III of the Federal Facility Agreement and Consent Order (FFACO, 1996). The CAU is located in Area 22 of the Nevada Test Site (NTS) (Figure 1) and consists of the following Corrective Action Sites (CASs): 22-03-01- Sewage Lagoon (CAU 230); and 22-99-01- Strainer Box (CAU 320). Included with CAS 22-99-01 is a buried Imhoff tank and a sludge bed. These CAUs will be collectively referred to in this plan as the Area 22 Sewage Lagoons site. Site characterization activities were done during September 1999. Characterization of the manholes associated with the septic system leading to the Imhoff tank was done during March 2000. The results of the characterization presented in the Corrective Action Decision Document (CADD) indicated that only the sludge bed (CAS 22-99-01) contained constituents of concern (COC) above action levels and required remediation (U.S. Department of Energy, Nevada Operations Office [DOE/NV], 2000a).
Date:
July 1, 2001
Creator:
Tobiason, D. S.
Object Type:
Report
System:
The UNT Digital Library
COAL DERIVED MATRIX PITCHES FOR CARBON-CARBON COMPOSITE MANUFACTURE/PRODUCTION OF FIBERS AND COMPOSITES FROM COAL-BASED PRECURSORS
The Consortium for premium Carbon Products from Coal, with funding from the US Department of Energy, National Energy Technology Laboratory continue with the development of innovative technologies that will allow coal or coal-derived feedstocks to be used in the production of value-added carbon materials. In addition to supporting eleven independent projects during budget period 3, three meetings were held at two separate locations for the membership. The first was held at Nemacolin Woodlands Resort on May 15-16, 2000. This was followed by two meetings at Penn State, a tutorial on August 11, 2000 and a technical progress meeting on October 26-27.
Date:
July 1, 2001
Creator:
Stansberry, Peter G. & Zondlo, John W.
Object Type:
Report
System:
The UNT Digital Library
Comments, July 2001
Newsletter of the Gulf Coast Waste Disposal Authority discussing news and updates related to the organization's meetings and activities, changes to regulations, and other relevant information.
Date:
July 2001
Creator:
Gulf Coast Waste Disposal Authority
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Comparison of Centerline Velocity Measurements Obtained Around 2D and 3D Building Arrays in a Wind Tunnel
None
Date:
July 1, 2001
Creator:
Brown, Michael. J.; Lawson, Robert. E.; DeCroix, David S. & Lee, Robert L.
Object Type:
Article
System:
The UNT Digital Library
Comparison of Methodologies for Computing Sky View Factor in Urban Environments
Sky view factor ({Psi}{sub sky}) is used in radiation balance schemes for the partitioning of longwave and shortwave radiation within urban and forest canopies and complex terrain. In the urban environment, ({Psi}{sub sky}) and 1-({Psi}{sub sky}) give a measure of how much radiation penetrates the canopy and how much will be intercepted by the canopy, respectively. As part of the Oct. 2000 URBAN field Experiment in Salt Lake City (Shinn et al., 2001), photographs were taken in the downtown area at ground level shooting upwards using a fisheye lens. Utilizing image analysis and in-house processing software, ({Psi}{sub sky}) was computed for each photograph. Sky view factor was also computed from 3D building databases using the methodology developed by Ratti and Richens (1999). Although photographic methods for obtaining sky view factor are very accurate, they are time consuming to acquire. Commercial 3D building databases are becoming increasingly more available and sky view factor can be computed from them quite easily. In the future, 3D building datasets might be used to readily compute sky view factor for cities and therefore better estimates of the urban climate could be made. Comparisons of the two methods for computing sky view factor are compared in …
Date:
July 1, 2001
Creator:
Brown, Michael. J.; Grimmond, Sue & Ratti, Carlo
Object Type:
Article
System:
The UNT Digital Library
Comparison of Three Plot Selection Methods for Estimating Change in Temporally Variable, Spatially Clustered Populations.
Monitoring population numbers is important for assessing trends and meeting various legislative mandates. However, sampling across time introduces a temporal aspect to survey design in addition to the spatial one. For instance, a sample that is initially representative may lose this attribute if there is a shift in numbers and/or spatial distribution in the underlying population that is not reflected in later sampled plots. Plot selection methods that account for this temporal variability will produce the best trend estimates. Consequently, I used simulation to compare bias and relative precision of estimates of population change among stratified and unstratified sampling designs based on permanent, temporary, and partial replacement plots under varying levels of spatial clustering, density, and temporal shifting of populations. Permanent plots produced more precise estimates of change than temporary plots across all factors. Further, permanent plots performed better than partial replacement plots except for high density (5 and 10 individuals per plot) and 25% - 50% shifts in the population. Stratified designs always produced less precise estimates of population change for all three plot selection methods, and often produced biased change estimates and greatly inflated variance estimates under sampling with partial replacement. Hence, stratification that remains fixed across time …
Date:
July 1, 2001
Creator:
Thompson, William L.
Object Type:
Report
System:
The UNT Digital Library
The complete mitochondrial genome of Articulate Brachiopod Terebratal ia transversa
We have sequenced the complete mitochondrial DNA (mtDNA) of the articulate brachiopod Terebratalia transversa. The circular genome is 14,291 bp in size, relatively small compared to other published metazoan mtDNAs. The 37 genes commonly found in animal mtDNA are present; the size decrease is due to the truncation of several tRNA, rRNA, and protein genes, to some nucleotide overlaps, and to a paucity of non-coding nucleotides. Although the gene arrangement differs radically from those reported for other metazoans, some gene junctions are shared with two other articulate brachiopods, Laqueus rubellus and Terebratulina retusa. All genes in the T. transversa mtDNA, unlike those in most metazoan mtDNAs reported, are encoded by the same strand. The A+T content (59.1 percent) is low for a metazoan mtDNA, and there is a high propensity for homopolymer runs and a strong base-compositional strand bias. The coding strand is quite G+T-rich, a skew that is shared by the confamilial (laqueid) specie s L. rubellus, but opposite to that found in T. retusa, a cancellothyridid. These compositional skews are strongly reflected in the codon usage patterns and the amino acid compositions of the mitochondrial proteins, with markedly different usage observed between T. retusa and the two laqueids. …
Date:
July 1, 2001
Creator:
Helfenbein, Kevin G.; Brown, Wesley M. & Boore, Jeffrey L.
Object Type:
Article
System:
The UNT Digital Library
THE COMPLEXITY OF COMPARING REACTION SYSTEMS
None
Date:
July 1, 2001
Creator:
ETTINGER, J. M.
Object Type:
Article
System:
The UNT Digital Library
THE CONCEPTUAL DESIGN ASSESSMENT FOR THE CO-FIRING OF BIO-REFINERY SUPPLIED LIGNIN PROJECT
The major aspects of this project are proceeding toward completion. Prior to this quarter, design criteria, tentative site selection, facility layout, and preliminary facility cost estimates were completed and issued. Processing of bio-solids was completed, providing material for the pilot operations. Pilot facility design, equipment selection, and modification were completed during the fourth quarter of 2000. Initial pilot facility shakedown was completed during the fourth quarter. After some unavoidable delays, a suitable representative supply of MSW feed material was procured. During this first quarter of 2001, shredding of the feed material and final feed conditioning were completed. Pilot facility hydrolysis production was completed to produce lignin for co-fire testing. During this quarter, TVA completed the washing and dewatering of the lignin material produced from the MSW hydrolysis. Seven drums of lignin material were washed to recover the acid and sugar from the lignin and provide an improved fuel for steam generation. Samples of both the lignin and bio-solids fuel materials for co-fire testing were sent to the co-fire facility (EERC) for evaluation. After sample evaluation, EERC approved sending the material and all of the necessary fuel for testing was shipped to EERC. EERC has requested and will receive coal typical …
Date:
July 1, 2001
Creator:
Berglund, Ted; Ranney, Jeffrey T.; Babb, Carol L. & Broder, Jacqueline G.
Object Type:
Report
System:
The UNT Digital Library
Congressional Record: Proceedings and Debates of the 107th Congress, First Session, Volume 147, Part 10
The Congressional Record contains the records for sessions of the U.S. Congress including summaries of proceedings, letters, and speeches for the Senate and House of Representatives.
Date:
July 2001
Creator:
United States. Congress.
Object Type:
Book
System:
The UNT Digital Library
COST-EFFECTIVE CONTROL OF NOx WITH INTEGRATED ULTRA LOW-NOx BURNERS AND SNCR
Coal-fired electric utilities are facing a serious challenge with regards to curbing their NO{sub x} emissions. At issue are the NO{sub x} contributions to the acid rain, ground level ozone, and particulate matter formation. Substantial NO{sub x} control requirements could be imposed under the proposed Ozone Transport Rule, National Ambient Air Quality Standards, and New Source Performance Standards. McDermott Technology, Inc. (MTI), Babcock and Wilcox (B and W), and Fuel Tech are teaming to provide an integrated solution for NO{sub x} control. The system will be comprised of an ultra low-NO{sub x} pulverized coal (PC) burner technology plus a urea-based, selective non-catalytic reduction (SNCR) system. This system will be capable of meeting a target emission limit of 0.15 lb NO{sub x}/10{sup 6} Btu and target ammonia (NH3) slip level targeted below 5 ppmV for commercial units. Our approach combines the best available combustion and post-combustion NO{sub x} control technologies. More specifically, B and W's DRB-4Z TM ultra low-NO{sub x} PC burner technology will be combined with Fuel Tech's NO{sub x}OUT (SNCR) and NO{sub x}OUT Cascade (SNCR/SCR hybrid) systems and jointly evaluated and optimized in a state-of-the-art test facility at MTI. Although the NO{sub x}OUT Cascade (SNCR/SCR hybrid) system will not …
Date:
July 1, 2001
Creator:
Farzan, Hamid
Object Type:
Report
System:
The UNT Digital Library