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3-D Mapping Technologies for High Level Waste Tanks
This research investigated four techniques that could be applicable for mapping of solids remaining in radioactive waste tanks at the Savannah River Site: stereo vision, LIDAR, flash LIDAR, and Structure from Motion (SfM). Stereo vision is the least appropriate technique for the solids mapping application. Although the equipment cost is low and repackaging would be fairly simple, the algorithms to create a 3D image from stereo vision would require significant further development and may not even be applicable since stereo vision works by finding disparity in feature point locations from the images taken by the cameras. When minimal variation in visual texture exists for an area of interest, it becomes difficult for the software to detect correspondences for that object. SfM appears to be appropriate for solids mapping in waste tanks. However, equipment development would be required for positioning and movement of the camera in the tank space to enable capturing a sequence of images of the scene. Since SfM requires the identification of distinctive features and associates those features to their corresponding instantiations in the other image frames, mockup testing would be required to determine the applicability of SfM technology for mapping of waste in tanks. There may be …
Date:
August 31, 2010
Creator:
Marzolf, A. & Folsom, M.
Object Type:
Article
System:
The UNT Digital Library
D = 5 Maximally Supersymmetric Yang-Mills Theory Diverges at Six Loops
None
Date:
October 31, 2012
Creator:
Bern, Zvi; Carrasco, John Joseph; Dixon, Lance J.; Douglas, Michael R.; von Hippel, Matt & Johansson, Henrik
Object Type:
Article
System:
The UNT Digital Library
A 12 GHZ 50 MW Klystron for Support of Accelerator Research
A 12 GHz 50MW X-band klystron is under development at the SLAC National Accelerator Laboratory Klystron Department. The klystron will be fabricated to support programs currently underway at three European Labs; CERN, PSI, and INFN Trieste. The choice of frequency selection was due to the CLIC RF frequency changing from 30 GHz to the European X-band frequency of 11.99 GHz in 2008. Since the Klystron Department currently builds 50MW klystrons at 11.424 GHz known collectively as the XL4 klystrons, it was deemed cost-effective to utilize many XL4 components by leaving the gun, electron beam transport, solenoid magnet and collector unchanged. To realize the rf parameters required, the rf cavities and rf output hardware were necessarily altered. Some improvements to the rf design have been made to reduce operating gradients and increase reliability. Changes in the multi-cell output structure, waveguide components, and the window will be discussed along with testing of the devices. Five klystrons known as XL5 klystrons are scheduled for production over the next two years.
Date:
May 31, 2011
Creator:
Sprehn, Daryl; Haase, Andrew; Jensen, Aaron; Jongewaard, Erik; Nantista, Christopher & Vlieks, Arnold
Object Type:
Article
System:
The UNT Digital Library
100 LPW 800 Lm Warm White LED
An illumination grade warm white (WW) LED, having correlated color temperature (CCT) between 2800 K and 3500K and capable of producing 800 lm output at 100 lm/W, has been developed in this program. The high power WW LED is an ideal source for use as replacement for incandescent, and Halogen reflector and general purpose lamps of similar lumen value. Over the two year period, we have made following accomplishments: developed a high power warm white LED product and made over 50% improvements in light output and efficacy. The new high power WW LED product is a die on ceramic surface mountable LED package. It has four 1x1 mm{sup 2} InGaN pump dice flip chip attached to a ceramic submount in 2x2 array, covered by warm white phosphor ceramic platelets called Lumiramic⢠and an overmolded silicone lens encapsulating the LED array. The performance goal was achieved through breakthroughs in following key areas: (1) High efficiency pump LED development through pump LED active region design and epi growth quality improvement (funded by internal programs). (2) Increase in injection efficiency (IE) represented by reduction in forward voltage (V{sub f}) through the improvement of the silver-based p-contact and a reduction in spreading resistance. The …
Date:
October 31, 2010
Creator:
Sun, Decai
Object Type:
Report
System:
The UNT Digital Library
The 2010 Oil Spill: Criminal Liability Under Wildlife Laws
This report highlights the possible ways to prosecute those who caused the 2010 oil spill in the Gulf of Mexico. The report suggests that prosecution can be done under laws such as the ESA (Endangered Species Act) or the MMPA (Marine Mammal Protection Act) both of which provide for civil and criminal punishment. However, the most likely law to be used will be the MBTA (Migratory Bird Treatment Act) which makes it a crime to kill migratory birds. The report suggests that the MBTA would be the best method to prosecute for criminal liability.
Date:
August 31, 2010
Creator:
Alexander, Kristina
Object Type:
Report
System:
The UNT Digital Library
2012 ACCOMPLISHMENTS - TRITIUM AGING STUDIES ON STAINLESS STEELS
This report summarizes the research and development accomplishments during FY12 for the tritium effects on materials program. The tritium effects on materials program is designed to measure the long-term effects of tritium and its radioactive decay product, helium-3, on the structural properties of forged stainless steels which are used as the materials of construction for tritium reservoirs. The FY12 R&D accomplishments include: (1) Fabricated and Thermally-Charged 150 Forged Stainless Steel Samples with Tritium for Future Aging Studies; (2) Developed an Experimental Plan for Measuring Cracking Thresholds of Tritium-Charged-and-Aged Steels in High Pressure Hydrogen Gas; (3) Calculated Sample Tritium Contents For Laboratory Inventory Requirements and Environmental Release Estimates; (4) Published report on “Cracking Thresholds and Fracture Toughness Properties of Tritium-Charged-and-Aged Stainless Steels”; and, (5) Published report on “The Effects of Hydrogen, Tritium, and Heat Treatment on the Deformation and Fracture Toughness Properties of Stainless Steels”. These accomplishments are highlighted here and references given to additional reports for more detailed information.
Date:
January 31, 2013
Creator:
Morgan, M.
Object Type:
Report
System:
The UNT Digital Library
2012 SRNL-EM VANE RHEOLOGY RESULTS
The vane method has been shown to be an effective tool in measuring the yield stress of both settled and mixed slurries in laboratory bench scale conditions in supporting assessments of both actual and simulant waste slurries. The vane has also been used to characterize dry powders and granular solids, the effect of non-cohesive solids with interstitial fluids and used as a guide to determine if slip is present in the geometries typically used to perform rheological flow curve measurements. The vane has been extensively characterized for measuring the shear strength in soils in both field and laboratory studies. The objectives for this task are: Fabricate vane instrument; Bench top testing to further characterize the effect of cohesive, non-cohesive, and blends of cohesive/non-cohesive simple simulants; Data from measurement of homogenized and settled bed of Kaolin sludge and assessment of the technology. In this document, the assessment using bench scale measurements of non-cohesive materials (beads) and cohesive materials (kaolin) is discussed. The non-cohesive materials include various size beads and the vane was assessed for depth and deaeration (or packing) via tapping measurements. For the cohesive (or non-Newtonian) materials, flow curves and yield stress measurements are performed using the vane and this …
Date:
August 31, 2012
Creator:
Hansen, E.; Marzolf, A. & Hera, K.
Object Type:
Report
System:
The UNT Digital Library
2018 Census: Games in Libraries
Presentation for Games in Libraries, University of Wisconsin-Eau Claire 2019. This presentation provides a snapshot of the previous census and discusses about the current state of gaming in libraries including types of games and equipment, online digital games, licensing, staffing budgets issues. Based on the analysis and synthesis of the survey feedback, the presentation speculates about common issues and what the future bring.
Date:
May 31, 2019
Creator:
Robson, Diane; Dewitt-Miller, Erin & Brannon, Sian
Object Type:
Presentation
System:
The UNT Digital Library
82nd Texas Legislature, Regular Session, House Bill 2403, Vetoed
Proclamation issued by Governor Rick Perry vetoing a bill passed by the Texas House of Representatives relating to retailers engaged in business in this state for purposes of sales and use taxes.
Date:
May 31, 2011
Creator:
Texas. Governor (2000- : Perry)
Object Type:
Legislative Document
System:
The Portal to Texas History
83rd Texas Legislature, Regular Session, House Concurrent Resolution 27
Concurrent resolution introduced by the Texas House of Representatives and Senate granting the legislature permission to adjourn for more than three days during the period beginning on Wednesday, January 16, 2013, and ending on Tuesday, January 22, 2013.
Date:
January 31, 2013
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
84th Texas Legislature, Regular Session, Senate Concurrent Resolution 35
Concurrent resolution introduced by the Texas House of Representatives and Senate granting the legislature permission to adjourn for more than three days during the period beginning on Wednesday, March 25, 2015, and ending on Monday, March 30, 2015.
Date:
March 31, 2015
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
85th Texas Legislature, Regular Session, House Bill 4, Chapter 315
Bill introduced by the Texas House of Representatives relating to the relative or other designated caregiver placement program and to monetary assistance provided by the Department of Family and Protective Services to certain relative or designated caregivers; creating a criminal offense; creating a civil penalty.
Date:
May 31, 2017
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
85th Texas Legislature, Regular Session, House Bill 5, Chapter 316
Bill introduced by the Texas House of Representatives relating to the powers and duties of the Department of Family and Protective Services and the transfer of certain powers and duties from the Health and Human Services Commission.
Date:
May 31, 2017
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
85th Texas Legislature, Regular Session, House Bill 7, Chapter 317
Bill introduced by the Texas House of Representatives relating to child protective services suits, motions, and services by the Department of Family and Protective Services and to the licensing of certain facilities, homes, and agencies that provide child-care services.
Date:
May 31, 2017
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
85th Texas Legislature, Regular Session, House Bill 3158, Chapter 318
Bill introduced by the Texas House of Representatives relating to the retirement systems for and the provision of other benefits to police and fire fighters in certain municipalities.
Date:
May 31, 2017
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
85th Texas Legislature, Regular Session, House Concurrent Resolution 46
Concurrent resolution introduced by the Texas House of Representatives and Senate inviting the governor to address a joint session of the legislature on Tuesday, January 31, 2017.
Date:
January 31, 2017
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
85th Texas Legislature, Regular Session, House Concurrent Resolution 47
Concurrent resolution introduced by the Texas House of Representatives and Senate granting the legislature permission to adjourn for more than three days during the period beginning on Wednesday, January 18, 2017, and ending on Tuesday, January 24, 2017.
Date:
January 31, 2017
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
85th Texas Legislature, Regular Session, Senate Bill 11, Chapter 319
Bill introduced by the Texas Senate relating to the provision of child protective services and other health and human services by certain state agencies or under contract with a state agency, including foster care, child protective, relative and kinship caregiver support, prevention and early intervention health care, and adoption services.
Date:
May 31, 2017
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
85th Texas Legislature, Regular Session, Senate Bill 2190, Chapter 320
Bill introduced by the Texas Senate relating to the public retirement systems of certain municipalities.
Date:
May 31, 2017
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
85th Texas Legislature, Regular Session, Senate Concurrent Resolution 10
Concurrent resolution introduced by the Texas House of Representatives and Senate granting the legislature permission to adjourn for more than three days during the period beginning on Wednesday, January 25, 2017, and ending on Monday, January 30, 2017.
Date:
January 31, 2017
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
86th Texas Legislature, Regular Session, House Bill 111, Chapter 303
Bill introduced by the Texas House of Representatives relating to public school policy and training for public school employees addressing the prevention of sexual abuse, sex trafficking, and other maltreatment of certain children.
Date:
May 31, 2019
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
86th Texas Legislature, Regular Session, House Bill 1142, Chapter 304
Bill introduced by the Texas House of Representatives relating to the creation and operations of health care provider participation programs in certain counties.
Date:
May 31, 2019
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
86th Texas Legislature, Regular Session, House Bill 1856, Chapter 305
Bill introduced by the Texas House of Representatives relating to the designation of a portion of U.S. Highway 287 as the Honorable Teel Bivins Memorial Highway.
Date:
May 31, 2019
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
86th Texas Legislature, Regular Session, House Bill 1858, Chapter 306
Bill introduced by the Texas House of Representatives relating to the designation of the portion of United States Highway 259 in Nacogdoches County as the Deputy Sheriff Raymond Bradley Jimmerson Memorial Highway.
Date:
May 31, 2019
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History