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A 3-Dimensional discrete fracture network generator to examine fracture-matrix interaction using TOUGH2
Water fluxes in unsaturated, fractured rock involve the physical processes occurring at fracture-matrix interfaces within fracture networks. Modeling these water fluxes using a discrete fracture network model is a complicated effort. Existing preprocessors for TOUGH2 are not suitable to generate grids for fracture networks with various orientations and inclinations. There are several 3-D discrete-fracture-network simulators for flow and transport, but most of them do not capture fracture-matrix interaction. We have developed a new 3-D discrete-fracture-network mesh generator, FRACMESH, to provide TOUGH2 with information about the fracture network configuration and fracture-matrix interactions. FRACMESH transforms a discrete fracture network into a 3 dimensional uniform mesh, in which fractures are considered as elements with unique rock material properties and connected to surrounding matrix elements. Using FRACMESH, individual fractures may have uniform or random aperture distributions to consider heterogeneity. Fracture element volumes and interfacial areas are calculated from fracture geometry within individual elements. By using FRACMESH and TOUGH2, fractures with various inclinations and orientations, and fracture-matrix interaction, can be incorporated. In this paper, results of flow and transport simulations in a fractured rock block utilizing FRACMESH are presented.
Date:
April 9, 2003
Creator:
Ito, Kazumasa & Yongkoo, Seol
Object Type:
Article
System:
The UNT Digital Library
8-oxoguainine enhances bending of DNA that favors binding of glycosylases
Molecular dynamics (MD) simulations were carried out on the DNA oligonucleotide GGGAACAACTAG:CTAGTTGTTCCC in its native form and with guanine in the central G19:C6 base pair replaced by 8-oxoguanine (8oxoG). A box of explicit water molecules was used for solvation and Na+ counterions were added to neutralize the system. The direction and magnitude of global bending were assessed by a technique used previously to analyze simulations of DNA containing a thymine dimer. The presence of 8oxoG did not greatly affect the magnitude of DNA bending; however, bending into the major groove was significantly more probable when 8oxoG replaced G19. Crystal structures of glycosylases bound to damaged-DNA substrates consistently show a sharp bend into the major groove at the damage site. We conclude that changes in bending dynamics that assist the formation of this kink are a part of the mechanism by which glycosylases of the base excision repair pathway recognize the presence of 8oxoG in DNA.
Date:
April 23, 2003
Creator:
Miller, John H.
Object Type:
Article
System:
The UNT Digital Library
9-11 Commission Hearing #1, April 1, 2003, Part 1
Recording of the first public hearing held by the National Commission on Terrorist Attacks upon the United States on April 1, 2003 at the Alexander Hamilton U.S. Custom House. This hearing specifically addresses the topics of borders, money, and transportation; law enforcement, domestic intelligence, and homeland security; and immediate response to the attacks. This section includes testimony on the topic of borders, money, and transportation security from representatives of the U.S. Department of Justice, Boies, Schiller, & Flexner LLP, and the U.S. General Accounting Office. It also includes a question and answer session.
Date:
April 1, 2003
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #1, April 1, 2003, Part 3
Recording of the first public hearing held by the National Commission on Terrorist Attacks upon the United States on April 1, 2003 at the Alexander Hamilton U.S. Custom House in New York City.This hearing specifically addresses the topics of borders, money, and transportation; law enforcement, domestic intelligence, and homeland security; and immediate response to the attacks. This section includes testimony from representatives of RAND, the Markle Foundation, and the ANSER Institute on the topic of law enforcement, domestic intelligence, and homeland security, in addition to a question and answer session.
Date:
April 1, 2003
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #1, April 1, 2003, Part 4
Recording of the first public hearing held by the National Commission on Terrorist Attacks upon the United States on April 1, 2003 at the Alexander Hamilton U.S. Custom House in New York City.This hearing specifically addresses the topics of borders, money, and transportation; law enforcement, domestic intelligence, and homeland security; and immediate response to the attacks. This section includes the question and answer session on law enforcement, domestic intelligence, and homeland security.
Date:
April 1, 2003
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #1, April 1, 2003, Part 5
Recording of the first public hearing held by the National Commission on Terrorist Attacks upon the United States on April 1, 2003 at the Alexander Hamilton U.S. Custom House in New York City.This hearing specifically addresses the topics of borders, money, and transportation; law enforcement, domestic intelligence, and homeland security; and immediate response to the attacks.This section begins the testimony from representatives of the Arlington County Fire Department, the American Society of Civil Engineers, and the New York Department of Design and Construction on the topic of immediate response to the 9/11 attacks.
Date:
April 1, 2003
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #1, April 1, 2003, Part 6
Recording of the first public hearing held by the National Commission on Terrorist Attacks upon the United States on April 1, 2003 at the Alexander Hamilton U.S. Custom House in New York City.This hearing specifically addresses the topics of borders, money, and transportation; law enforcement, domestic intelligence, and homeland security; and immediate response to the attacks.This section continues the question and answer session on the topic of the immediate response to the attacks.
Date:
April 1, 2003
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #3, July 9, 2003, Part 2
Recording of the third public hearing held by the National Commission on Terrorist Attacks upon the United States on July 9, 2003 at the Russell Senate Office Building in Washington, D.C. The one-day session focused on "Terrorism, al Qaeda, and the Muslim World." This section includes the second panel on States and Terrorism, and the third panel on The Challenge within the Muslim World with testimony from experts on transnational terrorism.
Date:
April 1, 2003
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
16-APR-03 Final Release of ENDF/B-V for use with LLNL Codes
The new data files were prepared in two steps. First, the ENDF/B-V database was translated to an ENDL-format ascii database. The ENDL ascii format is a point-wise tabular storage scheme where intermediate values are extracted via interpolation. Sufficient point-wise information was generated in the translation to insure an extraction tolerance of 0.1% for most of the data. The only exception is along the incident neutron energy axis of the outgoing particle energy probability density function where a 0.5% tolerance was maintained. Second, processed files were generated from the translated database. Since the translated ENDF/B-V data is in ENDL-format, the standard processing codes were used to generate the new processed data files. To the best of our knowledge, these processed data files are accurate representations of the ENDF/B-V database to within the stated tolerances. However, there are several issues that users must be aware of and they are listed in this report.
Date:
April 16, 2003
Creator:
Hill, T S; McNabb, D P; Hedstrom, G W; Beck, B & Hagmann, C A
Object Type:
Report
System:
The UNT Digital Library
AN-102 Simulant Sr/TRU Precipitation and Ultrafiltration
The objective of these tests was to gather data on performance of the single-tube crossflow ultrafilter unit to de-water the simulant precipitate derived from a project approved tank 241-AN-102 simulant. Upon completion of the objectives with the approved R1 simulant, the simulant specification was changed and additional work at modified precipitation conditions was requested.
Date:
April 28, 2003
Creator:
Zamecnik, J. R.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 32, No. 23, Ed. 1 Friday, April 4, 2003
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 4, 2003
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 32, No. 24, Ed. 1 Friday, April 11, 2003
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 11, 2003
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 32, No. 25, Ed. 1 Friday, April 18, 2003
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 18, 2003
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 32, No. 26, Ed. 1 Friday, April 25, 2003
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 25, 2003
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[2003 World Dance Alliance V General Assembly of The Americas attendees dance at closing ceremony dinner]
Photograph of attendees of the 2003 World Dance Alliance V General Assembly of The Americas dancing at the closing ceremony dinner. The dinner venue was the Museum of the Royal Houses (Museo de las Casas Reales) in the Dominican Republic.
Date:
April 26, 2003
Creator:
World Dance Alliance
Object Type:
Photograph
System:
The UNT Digital Library
[3rd annual "First Ladies Luncheon" tape 1 of 2]
Video recording from The Black Academy of Arts and Letters recorded during the 3rd annual "First Ladies Luncheon" held on April 12th, 2003. The lunch was held to recognize the wives of Dallas/Fort Worth area religious leaders for their work in supporting the Academy. The footage shows various speakers addressing a room of well-dressed women.
Date:
April 12, 2003
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
[6th Annual Miss Dragonfly]
Photograph of the winner of the sixth annual Miss Dragonfly Pageant. They are standing on stage and are wearing a and gold-detailed dress. They are holding a large bouquet of roses and have a blue sash and tiara on. The audience is visible in front of them.
Date:
April 5, 2003
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[6th Annual Miss Dragonfly court]
Photograph of the winner of the sixth annual Miss Dragonfly Pageant and other contestants. They are gathered on stage and are wearing outfits and evening gowns. The winner is sitting on their throne and have a tiara and sash on. Other contestants are standing behind them in a line and the host is to the side.
Date:
April 5, 2003
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[6th Annual Miss Dragonfly winner and court]
Photograph of the winner of the sixth annual Miss Dragonfly Pageant and other contestants. They are gathered on stage and are wearing outfits and evening gowns. The winner is sitting on their throne and have a tiara and sash on. Other contestants are standing behind them.
Date:
April 5, 2003
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[6th Miss Dragonfly Pageant contestant]
Photograph of the back of a contestant from the sixth annual Miss Dragonfly pageant. They are standing on the edge of the stage and are wearing a gown decorated with rhinestones and matching gloves. Members of the audience are visible past them.
Date:
April 5, 2003
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[6th Miss Dragonfly Pageant contestant performing]
Photograph of a contestant from the sixth annual Miss Dragonfly pageant. They are standing on the stage and are wearing a gown decorated with rhinestones and matching gloves. They are singing into the microphone and behind them is a rainbow cloth draped over a box.
Date:
April 5, 2003
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
78th Texas Legislature, Regular Session, House Bill 535, Chapter 12
Bill introduced by the Texas House of Representatives relating to a name change for and a change in the terms of the board of directors of the Colorado Valley Groundwater Conservation District.
Date:
2003-04/2003-05
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, Regular Session, House Bill 829, Chapter 180
Bill introduced by the Texas House of Representatives relating to jurisdiction to enter certain orders in a failure to attend school proceeding.
Date:
2003-04/2003-05
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, Regular Session, House Bill 831, Chapter 467
Bill introduced by the Texas House of Representatives relating to regulation of the use of laser pointers; providing a criminal penalty.
Date:
2003-04/2003-06
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History