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81st Legislature of Texas
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"25" Critically Consultation with J. W. Morfitt : April 3, 1950
Summary: "Criticality was considered impossible in any contingency encountered in practice under either of the following conditions which include no safety factor: (a) In any isolated cylinder not more than 5 in. in disruptor, if the total amount of U235 present does not exceed 7.5 Eg. (b) In an isolated vessel of any shape and size, if the total amount of U235 present does not exceed 880 g. An "isolated" vessel is one which does not "see" more than 0.1 [...] other vessels containing fissionable material."
Date:
April 3, 1950
Creator:
Merrill, E. T. & Sege, G.
Object Type:
Report
System:
The UNT Digital Library
2006 Electrochemistry Gordon Research Conference - February 12-17-2006
This report is a descriptive journey of 2006 Electrochemistry Gordon Research Conference.
Date:
April 3, 2007
Creator:
Abruna, Hector D.
Object Type:
Article
System:
The UNT Digital Library
2020 Census: Prioritized Information Technology Research and Testing Is Needed for Census Design Decisions
A letter report issued by the Government Accountability Office with an abstract that begins "The Census Bureau (Bureau) has made progress in researching and testing information technology (IT) options for the 2020 Decennial Census, but several of the supporting projects lack schedules and plans, and it is uncertain whether they will be completed in time to inform the decision on the operational design for the 2020 census, planned for September 2015. Specifically, it has begun research on six IT-related projects, such as using the Internet for survey response and using employees' personal smartphones to collect census data. However, four of the projects lacked finalized schedules, and three lacked plans for gauging progress. Moreover, the two projects with completed schedules are not estimated to be completed until after the September 2015 design decision date (see figure)."
Date:
April 3, 2014
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
81st Texas Legislature, House Concurrent Resolution, House Bill 36
Concurrent resolution introduced by the Texas House of Representatives and Senate relating to commending all those in Denton County who participated in the emergency response to Hurricane Ike.
Date:
April 3, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, House Concurrent Resolution, House Bill 83
Concurrent resolution introduced by the Texas House of Representatives and Senate relating to in memory of Horace Arnold Durham of Pecan Gap.
Date:
April 3, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, House Concurrent Resolution, House Bill 84
Concurrent resolution introduced by the Texas House of Representatives and Senate relating to congratulating the Sulphur Springs Wildcats football team on winning the 2008 UIL 4A Division 2 state championship.
Date:
April 3, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, House Concurrent Resolution, House Bill 92
Concurrent resolution introduced by the Texas House of Representatives and Senate relating to commemorating the 100th anniversary of the Denton Chamber of Commerce.
Date:
April 3, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, House Concurrent Resolution, House Bill 98
Concurrent resolution introduced by the Texas House of Representatives and Senate relating to commending Michael William Heskett for his 26 years of service to the Texas State Library and Archives Commission.
Date:
April 3, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, House Concurrent Resolution, House Bill 133
Concurrent resolution introduced by the Texas House of Representatives and Senate relating to honoring Calvin Nelson Clyde, Jr., of Tyler on his 88th birthday.
Date:
April 3, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Senate Concurrent Resolutions 28
Concurrent resolution introduced by the Texas Senate and House of Representatives relating to recognizing William F. Mullican III on the occasion of his retirement from the Texas Water Development Board.
Date:
April 3, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Senate Concurrent Resolutions 37
Concurrent resolution introduced by the Texas Senate and House of Representatives relating to welcoming members of the Texas Organization of Rural and Community Hospitals and the Texas Rural Health Association to the Capitol.
Date:
April 3, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Senate Concurrent Resolutions 44
Concurrent resolution introduced by the Texas Senate and House of Representatives relating to commemorating the 60th anniversary of the creation of the Texas Legislative Council.
Date:
April 3, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Senate Concurrent Resolutions 50
Concurrent resolution introduced by the Texas Senate and House of Representatives relating to recognizing Arturo E. Guerra, Jr., for his contributions to the justice system in Texas.
Date:
April 3, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
83rd Texas Legislature, Regular Session, Senate Concurrent Resolution 32
Concurrent resolution introduced by the Texas House of Representatives and Senate granting the legislature permission to adjourn for more than three days.
Date:
April 3, 2013
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
Absolute and Relative Surrogate Measurements of the 236U(n,f) Cross Section as a Probe for Angular Momentum Effects
Using both the absolute and relative surrogate techniques, the {sup 236}U(n,f) cross section was deduced over an equivalent neutron energy range of 0 to 20 MeV. A 42 MeV {sup 3}He beam from the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory was used to perform a ({sup 3}He,{alpha}) pickup reaction on targets of {sup 235}U (J{sup {pi}}=7/2{sup -}) and {sup 238}U (J{sup {pi}}=0{sup +}) and the fission decay probabilities were determined. The {sup 235}U({sup 3}He,{alpha}f) and {sup 238}U({sup 3}He,{alpha}f) were surrogates for {sup 233}U(n,f) and {sup 236}U(n,f), respectively. The cross sections extracted using the Surrogate Method were compared to directly measured cross sections. The sensitivity of these cross sections to the J{sup {pi}}-population distributions was explored.
Date:
April 3, 2007
Creator:
Lyles, B; Bernstein, L; Burke, J; Escher, J; Thompson, I; Dietrich, F et al.
Object Type:
Article
System:
The UNT Digital Library
THE ABSORPTION OF HYDROGEN ON LOW PRESSURE HYDRIDE MATERIALS
For this study, hydrogen getter materials (Zircaloy-4 and pure zirconium) that have a high affinity for hydrogen (and low overpressure) have been investigated to determine the hydrogen equilibrium pressure on Zircaloy-4 and pure zirconium. These materials, as with most getter materials, offered significant challenges to overcome given the low hydrogen equilibrium pressure for the temperature range of interest. Hydrogen-zirconium data exists for pure zirconium at 500 C and the corresponding hydrogen overpressure is roughly 0.01 torr. This manuscript presents the results of the equilibrium pressures for the absorption and desorption of hydrogen on zirconium materials at temperatures ranging from 400 C to 600 C. The equilibrium pressures in this temperature region range from 150 mtorr at 600 C to less than 0.1 mtorr at 400 C. It has been shown that the Zircaloy-4 and zirconium samples are extremely prone to surface oxidation prior to and during heating. This oxidation precludes the hydrogen uptake, and therefore samples must be heated under a minimum vacuum of 5 x 10{sup -6} torr. In addition, the Zircaloy-4 samples should be heated at a sufficiently low rate to maintain the system pressure below 0.5 mtorr since an increase in pressure above 0.5 mtorr could possibly …
Date:
April 3, 2012
Creator:
Morgan, G. & Korinko, P.
Object Type:
Article
System:
The UNT Digital Library
Accelerated/abbreviated test methods, Study 4 of Task 3 (encapsulation) of the Low-Cost Silicon Solar Array Project. Eighth quarterly progress report, January--March 1978
To meet the goals of the LSSA program, solar cell encapsulants must provide protection for 20 years. Consequently, the objective of the present program is to develop methodology for making confident predictions of encapsulant performance at any exposure site in the U.S.A. During the first year of the program, inherent weatherability was studied. Inherent weatherability is controlled by the three weather factors common to all exposure sites: insolation, temperature, and humidity. Emphasis was focused on the transparent encapsulant portion of miniature solar cell arrays by eliminating weathering effects on the substrate and circuitry (which are also parts of the encapsulant system). The most extensive data were for yellowing, which was measured conviently and precisely. Considerable data also were obtained on tensile strength. Changes in these two properties after outdoor exposure were predicted very well from accelerated exposure data. Although more outdoor exposure data will be received, mathematical modeling studies are continuing. This first part of the program can be said to be successfully concluded. In continuation of the inherent weatherability study, the power output of solar cells was monitored under accelerated test conditions and is being followed for outdoor exposures. For this purpose, Universal Test Specimens (UTS's) with nine different …
Date:
April 3, 1978
Creator:
Kolyer, J. M.
Object Type:
Report
System:
The UNT Digital Library
Acetylene-Gas Generator.
Patent for an acetylene gas generator, which claims to improve upon this device by simplifying the "means for feeding carbid to the water," (line 14) hence making it "more efficient and durable in use and less expensive to manufacture." (lines 19-21)
Date:
April 3, 1906
Creator:
Dulaney, John B.
Object Type:
Patent
System:
The Portal to Texas History
Acid Formation in the Radiolysis of Phosphorus Esters
The radiolytic decomposition of tributyl phosphate has been show by burr to product gases, acids, and polymers. the acids that are formed can limit the usefulness of tributyl phosphate for the processing of radioactive materials. The study of acid formation on radiolysis therefor becomes important to us for the understanding of the mechanism of acid formation, the influence of added materials and the effect of the structure of organo- phosphorous compounds. Samples of purified esters have been irradiated in the ORNL cobalt source. Conclusions: (1) The formation of acid from tributyl phosphate during irradiation with cobalt gamma rays involves a mechanism that is not a primary step. Evidence has been obtained for a secondary reaction that is minimized by the presence of certain compounds. (2) Toluene acting as an inhibitor for radiolytic formation of acid may indicate the usefulness of an aromatic hydrocarbon diluent in processing. (3) The aromatic hydrocarbon, when phenyl, was not effective when it was part of the molecule. (4) First tests revealed that dibutyl butyl-phosphonate produced less acid the TBP and may warrant further consideration for process application.
Date:
April 3, 1957
Creator:
Baldwin, W. H.
Object Type:
Report
System:
The UNT Digital Library
Afghanistan: Background and U.S. Policy In Brief
This report provides an overview of current political and military dynamics, with a focus on the Trump Administration's new strategy for Afghanistan and South Asia, the U.S.-led coalition and Afghan military operations, and recent political developments, including prospects for peace talks and elections.
Date:
April 3, 2018
Creator:
Thomas, Clayton
Object Type:
Report
System:
The UNT Digital Library
Africa Command: U.S. Strategic Interests and the Role of the U.S. Military in Africa
This report provides information on U.S. Africa Command or (AFRICOM), including AFRICOM's mission, structure, interagency coordination, and its basing and manpower requirements. The report also gives a broad overview of U.S. strategic interests in Africa and the role of U.S. military efforts on the continent as they pertain to the creation of Africa Command.
Date:
April 3, 2010
Creator:
Ploch, Lauren
Object Type:
Report
System:
The UNT Digital Library
Aging and Phase Stability Studies of Alloy 22 FY08 Final Report
This report is a compilation of work done over the past ten years in support of phase stability studies of Alloy 22 for the Yucca Mountain Project and contains information previously published, reported, and referenced. Most sections are paraphrased here for the convenience of readers. Evaluation of the fabrication processes involved in the manufacture of waste containers is important as these processes can have an effect on the metallurgical structure of an alloy. Because material properties such as strength, toughness, aging kinetics and corrosion resistance are all dependent on the microstructure, it is important that prototypes be built and evaluated for processing effects on the performance of the material. Of particular importance are welds, which have an as-cast microstructure with chemical segregation and precipitation of complex phases resulting from the welding process. The work summarized in this report contains information on the effects of fabrication processes such as solution annealing, stress mitigation, heat-to-heat variability, and welding on the kinetics of precipitation, mechanical, and corrosion properties. For a waste package lifetime of thousands of years, it is impossible to test directly in the laboratory the behavior of Alloy 22 under expected repository conditions. The changes that may occur in these materials …
Date:
April 3, 2008
Creator:
Torres, S G
Object Type:
Report
System:
The UNT Digital Library
Agricultural Biotechnology: Background, Regulation, and Policy Issues
This report discusses on going issues regarding biotechnology, which refers primarily to the use of recombinant DNA techniques to genetically modify or bioengineer plants and animals. Ongoing policy issues include the impacts of genetially engineered (GE) crops on the environment (e.g., pest and weed resistance), whether GE foods should be labeled, their potential contamination of conventionally raised and organic plants, and issues of liability.
Date:
April 3, 2013
Creator:
Cowan, Tadlock
Object Type:
Report
System:
The UNT Digital Library
Agricultural Trade Issues in the 108th Congress
This report considers the value of U.S. agricultural exports. According to the report, these exports make up the equivalent of one fourth of the gross income of U.S. farmers. Moreover, the report lists a series of trade policies that the future of agriculture depends on.
Date:
April 3, 2003
Creator:
Hanrahan, Charles E.; Becker, Geoffrey S.; Jurenas, Remy & Schnepf, Randy
Object Type:
Report
System:
The UNT Digital Library