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60
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1.06 μm 150 psec laser damage study of diamond turned, diamond turned/ polished and polished metal mirrors
Using a well characterized 1.06 μm 150 ps glass laser pulse the damage characteristics for diamond turned, diamond turned/ polished, and polished copper and silver mirrors less than 5 cm diameter were studied. Although most samples were tested with a normal angle of incidence, some were tested at 45$sup 0$ with different linear polarization showing an increase in damage threshold for S polarization. Different damage mechanisms observed will be discussed. Laser damage is related to residual surface influences of the fabrication process. First attempts to polish diamond turned surfaces resulted in a significant decrease in laser damage threshold. The importance of including the heat of fusion in the one dimensional heat analysis of the theoretical damage threshold and how close the samples came to the theoretical damage threshold is discussed. (auth)
Date:
July 24, 1975
Creator:
Saito, T. T.; Milam, D.; Baker, P. & Murphy, G.
Object Type:
Article
System:
The UNT Digital Library
The (178m2)Hf Controversy
Since its discovery in the 1960's the {sup 178m2}Hf isomer has garnered high attention from both the basic and applied communities in nuclear science. It's combination of high spin (16+), long half life (31 yrs), and high excitation energy (2.446 MeV) offer unique possibilities as an energy storage medium. Interest in the isomer was rekindled beginning in 1999 when a series of publications began to appear from a group (referred to here as the ''Texas collaboration'') primarily based at the University of Texas, Dallas [1]. They reported observations that some of the stored energy could be released (''triggered'') when the isomer was exposed to a fluence of photons in the energy range {approx}10 to {approx}60 keV. The implications of this observation are profound. Even though the claimed cross section for the process was {approx}7 orders of magnitude greater than would be predicted from the known systematics of photon absorption by nuclei in this mass range [2], such a highly efficient method for triggering the isomeric deexcitation immediately suggested applications utilizing the explosive or the controlled gradual energy release from a very compact source. The prospect of such applications has focused considerable interest on realizing the promise that is implicit in …
Date:
July 24, 2003
Creator:
Becker, J. A.; Gemmell, D. S.; Schiffer, J. P. & Wilhelmy, J. B.
Object Type:
Report
System:
The UNT Digital Library
1987 Gordon Research Conference on Physical Metallurgy.
None
Date:
July 24, 1987
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
1997 evaluation of tritium removal and mitigation technologies for Hanford Site wastewaters
This report contains results of a biennial assessment of tritium separation technology and tritium nitration techniques for control of tritium bearing wastewaters at the Hanford Site. Tritium in wastewaters at Hanford have resulted from plutonium production, fuel reprocessing, and waste handling operations since 1944. this assessment was conducted in response to the Hanford Federal Facility Agreement and Consent Order.
Date:
July 24, 1997
Creator:
Jeppson, D. W.; Biyani, R. K.; Duncan, J. B.; Flyckt, D. L.; Mohondro, P. C. & Sinton, G. L.
Object Type:
Report
System:
The UNT Digital Library
1A HEAT EXCHANGER LEAK TEST. CORE I, SEED 2. Test Evaluation. Section 2
An investigation was conducted to determine which tubes of the 1A loop heat exchanger are leaking. Air pressure and probing tests are inconclusive and cannot be used to verify chemical sampling. (J.R.D.)
Date:
July 24, 1961
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
2002 Update of the 155mm Lightweight Howitzer
Correspondence issued by the General Accounting Office with an abstract that begins "This report describes the schedule, cost, and technical status of the 155mm Lightweight Howitzer program. The Army-Marine Corps Lightweight Howitzer Joint Program Office directs this program's development, with a British company as the prime contractor. Since GAO's April 2000 report (See GAO-01-603R), all key milestones have slipped because a 2-year low-rate initial production phase has been added to provide production representative howitzers for operational testing. Correspondingly, the full-rate production decision has slipped from September 2002 to October 2004. Since April 2001, total program cost estimates have increased from $1,209.0 million to $1,365.2 million, principally as the result of the large number of design modifications resulting from developmental testing and restructuring the program to add a low-rate initial production phase. In addition, the costs for the towed artillery digitization increased by $51 million. Technical problems--such as the durability of the optical fire control, bore sight retention, and accuracy--have been addressed through design changes. However, some of these changes have not yet been tested, and the Marine Corps Operational Test and Evaluation Activity has yet to review test data that the program office believes shows the howitzer has met accuracy …
Date:
July 24, 2002
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
2007 SB14 Source Reduction Plan/Report
Aqueous solutions (mixed waste) generated from various LLNL operations, such as debris washing, sample preparation and analysis, and equipment maintenance and cleanout, were combined for storage in the B695 tank farm. Prior to combination the individual waste streams had different codes depending on the particular generating process and waste characteristics. The largest streams were CWC 132, 791, 134, 792. Several smaller waste streams were also included. This combined waste stream was treated at LLNL's waste treatment facility using a vacuum filtration and cool vapor evaporation process in preparation for discharge to sanitary sewer. Prior to discharge, the treated waste stream was sampled and the results were reviewed by LLNL's water monitoring specialists. The treated solution was discharged following confirmation that it met the discharge criteria. A major source, accounting for 50% for this waste stream, is metal machining, cutting and grinding operations in the engineering machine shops in B321/B131. An additional 7% was from similar operations in B131 and B132S. This waste stream primarily contains metal cuttings from machined parts, machining coolant and water, with small amounts of tramp oil from the machining and grinding equipment. Several waste reduction measures for the B321 machine shop have been taken, including the …
Date:
July 24, 2007
Creator:
Chang, L
Object Type:
Report
System:
The UNT Digital Library
2009 MICROBIAL POPULATION BIOLOGY GORDON RESEARCH CONFERENCES JULY 19-24,2009
The 2009 Gordon Conference on Microbial Population Biology will cover a diverse range of cutting edge issues in the microbial sciences and beyond. Firmly founded in evolutionary biology and with a strongly integrative approach, past Conferences have covered a range of topics from the dynamics and genetics of adaptation to the evolution of mutation rate, community ecology, evolutionary genomics, altruism, and epidemiology. The 2009 Conference is no exception, and will include sessions on the evolution of infectious diseases, social evolution, the evolution of symbioses, experimental evolution, adaptive landscapes, community dynamics, and the evolution of protein structure and function. While genomic approaches continue to make inroads, broadening our knowledge and encompassing new questions, the conference will also emphasize the use of experimental approaches to test hypotheses decisively. As in the past, this Conference provides young scientists and graduate students opportunities to present their work in poster format and exchange ideas with leading investigators from a broad spectrum of disciplines. This meeting is never dull: some of the most significant and contentious issues in biology have been thrashed out here. The 2009 meeting will be no exception.
Date:
July 24, 2009
Creator:
Dean, Anthony
Object Type:
Article
System:
The UNT Digital Library
The 2010 Deepwater Horizon Oil Spill: Natural Resource Damage Assessment Under the Oil Pollution Act
Report that examines the Natural Resources Damage Assessment (NRDA) process under the Oil Pollution Act (OPA) in the context of the Deepwater Horizon spill.
Date:
July 24, 2013
Creator:
Vann, Adam & Meltz, Robert
Object Type:
Report
System:
The UNT Digital Library
2013 Snapshot of NGSI Human Capital Development and Future Roadmap
N/A
Date:
July 24, 2013
Creator:
Scholz, Melissa; Dewji, Shaheen; Poe, Sarah & Finklea, Lauren
Object Type:
Report
System:
The UNT Digital Library
5171 - A-H - Community Correspondence Army - Hawthorne Army Depot - NV
Letter To Commissioners From Jan Bunning, Vice Chairmean Mina Town Advisory Council
Date:
July 24, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
78th Texas Legislature, First Called Session, House Concurrent Resolution 4
Concurrent resolution introduced by the Texas House of Representatives and Senate relating to recognizing October 24, 2003, as Presbyterian Children's Homes and Services Day in Texas.
Date:
July 24, 2003
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, First Called Session, House Concurrent Resolution 7
Concurrent resolution introduced by the Texas House of Representatives and Senate relating to granting the legislature the permission to adjourn for more than three days during the period beginning on Thursday, July 10, 2003, and ending on Tuesday, July 15, 2003.
Date:
July 24, 2003
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, First Called Session, House Concurrent Resolution 8
Concurrent resolution introduced by the Texas House of Representatives and Senate relating to congratulating Carly Bender on being crowned Preteen Miss Majorette of Texas and recognizing July 21-27, 2003, as National Baton Twirling Week.
Date:
July 24, 2003
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
A26 - Base Input Army - Hawthorne Army Depot - NV
Letter to Mr. Delgado From Johnny M. Summers Lieutenant Colonel, U.S. Army Commanding
Date:
July 24, 2005
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Abstracts Pertaining to Seaplanes
Report discussing about 400 references pertaining to the hydrodynamic design of seaplanes have been compiled, and the information is presented in the form of abstracts classified under six main headings.
Date:
July 24, 1947
Creator:
Bidwell, Jerold M. & King, Douglas A.
Object Type:
Report
System:
The UNT Digital Library
Acceptance test report for portable exhauster POR-007/Skid E
This document describes Acceptance Testing performed on Portable Exhauster POR-007/Skid E. It includes measurements of bearing vibration levels, pressure decay testing, programmable logic controller interlocks, high vacuum, flow and pressure control functional testing. The purpose of Acceptance testing documented by this report was to demonstrate compliance of the exhausters with the performance criteria established within HNF-0490, Rev. 1 following a repair and upgrade effort at Hanford. In addition, data obtained during this testing is required for the resolution of outstanding Non-conformance Reports (NCR), and finally, to demonstrate the functionality of the associated software for the pressure control and high vacuum exhauster operating modes provided for by W-320. Additional testing not required by the ATP was also performed to assist in the disposition and close out of receiving inspection report and for application design information (system curve). Results of this testing are also captured within this document.
Date:
July 24, 1998
Creator:
Kriskovich, J.R.
Object Type:
Report
System:
The UNT Digital Library
Acceptance test report for portable exhauster POR-008/Skid F
Portable Exhauster POR-008 was procured via HNF-0490, Specification for a Portable Exhausted System for Waste Tank Ventilation. Prior to taking ownership, acceptance testing was performed at the vendors. However at the conclusion of testing a number of issues remained that required resolution before the exhausters could be used by Project W-320. The purpose of acceptance testing documented by this report was to demonstrate compliance of the exhausters with the performance criteria established within HNF-O49O, Rev. 1 following a repair and upgrade effort at Hanford. In addition, data obtained during this testing is required for the resolution of outstanding Non-conformance Reports (NCR), and finally, to demonstrate the functionality of the associated software for the pressure control and high vacuum exhauster operating modes provided for by W-320. Additional testing not required by the ATP was also performed to assist in the disposition and close out of receiving inspection report and for application design information (system curve). Results of this testing are also captured within this document.
Date:
July 24, 1998
Creator:
Kriskovich, J.R.
Object Type:
Report
System:
The UNT Digital Library
Acetylene-Gas-Generating Apparatus.
Patent for "improvements in apparatus for generating acetylene , and comprises the novel features." (lines 8-10) including illustration.
Date:
July 24, 1900
Creator:
Metcalf, Charles Wesley
Object Type:
Patent
System:
The Portal to Texas History
ActiveSpaces on the Grid: The Construction of Advanced Visualization and Interaction Environments
The Futures Lab group at Argonne National Laboratory and the University of Chicago are designing, building, and evaluating a new type of interactive computing environment that couples in a deep way the concepts of direct manipulation found in virtual reality with the richness and variety of interactive devices found in ubiquitous computing. This environment provides the interactivity and collaboration support of teleimmersive environments with the exibility and availability of desktop collaboration tools. The authors call these environments ActiveSpaces. An ActiveSpace is a physical domain that has been augmented with multiscale multiscreen displays, environment-specific and device-specific sensors, body and object trackers, human-input and instrument-input interfaces, streaming audio and video capture devices, and force feedback devices--and has then been connected to other such spaces via the Grid.
Date:
July 24, 2000
Creator:
Childers, Lisa; Disz, Terry; Hereld, Mark; Hudson, Randy; Judson, Ivan; Olson, Robert et al.
Object Type:
Article
System:
The UNT Digital Library
Afghanistan: Post-Taliban Governance, Security, and U.S. Policy
This report examines the current political state of Afghanistan at length, discussing the political background, security policy, and regional relations.
Date:
July 24, 2017
Creator:
Katzman, Kenneth & Thomas, Clayton
Object Type:
Report
System:
The UNT Digital Library
Afghanistan Security: Long-standing Challenges May Affect Progress and Sustainment of Afghan National Security Forces
Testimony issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) and the North Atlantic Treaty Organization (NATO) report progress developing capable Afghan National Security Forces (ANSF), but tools used to assess the performance of ANSF units have changed several times. In April 2012, DOD reported progress increasing the number and capability of ANSF, with 7 percent of army units and 9 percent of police units rated at the highest level of capability. GAO has previously found the tools used by DOD and NATO to assess ANSF reliable enough to support broad statements regarding capability. However, issues related to these tools exist. When GAO reported on ANA capability in January 2011, the highest capability rating level was independentmeaning that a unit was capable of executing the full spectrum of its missions without assistance from coalition forces. As of August 2011, the highest level had changed to independent with advisorsmeaning that a unit was capable of executing its mission and can call for coalition forces when necessary. DOD reports, these changes, as well as the elimination of certain requirements for validating units, were partly responsible for the increase in ANSF units rated at the highest …
Date:
July 24, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
African Growth and Opportunity Act (AGOA): Background and Reauthorization
This report discusses the African Growth and Opportunity Act (AGOA), which is a nonreciprocal trade preference program that provides duty-free treatment to U.S. imports of certain products from eligible sub-Saharan African (SSA) countries.
Date:
July 24, 2014
Creator:
Williams, Brock R.
Object Type:
Report
System:
The UNT Digital Library
Agencies Believe Strengthening International Agreements to Improve Collection of Antidumping and Countervailing Duties Would Be Difficult and Ineffective
Correspondence issued by the Government Accountability Office with an abstract that begins "The United States and many of its trading partners have enacted laws to remedy the unfair trade practices of other countries and foreign companies that cause injury to domestic industries. U.S. law authorizes the imposition of additional duties on importers to remedy these unfair trade practices. Specifically, antidumping (AD) duties are imposed on imports that are "dumped" in the United States (i.e., sales in the U.S. market at less than the market price in the item's home market) and countervailing (CV) duties are imposed on imports that are subsidized by foreign governments. Importers are responsible for paying all duties, taxes, and fees on products when they are brought into the United States (including AD/CV duties). Importers can be located either domestically or overseas. Since fiscal year 2001, U.S. Customs and Border Protection (CBP), which is responsible for collecting import duties, has been unable to collect hundreds of millions of dollars in AD/CV duties. In March 2008, we reported that over $600 million in AD/CV duties were uncollected. Our analysis revealed four key factors contributing to uncollected AD/CV duties: (1) the retrospective component of the U.S. AD/CV duty system, …
Date:
July 24, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library