Resource Type

THE FATIGUE BEHAVIOR OF Pu-1.0 w/o Ga DELTA-STABILIZED PLUTONIUM (open access)

THE FATIGUE BEHAVIOR OF Pu-1.0 w/o Ga DELTA-STABILIZED PLUTONIUM

None
Date: January 22, 1965
Creator: Gardner, H.R.
System: The UNT Digital Library
Properties of thermally contracting tantalum tungstates. [Ta/sub 22/W/sub 4/O/sub 67/, Ta/sub 2/WO/sub 8/, Ta/sub 16/W/sub 18/O/sub 94/] (open access)

Properties of thermally contracting tantalum tungstates. [Ta/sub 22/W/sub 4/O/sub 67/, Ta/sub 2/WO/sub 8/, Ta/sub 16/W/sub 18/O/sub 94/]

None
Date: February 22, 1977
Creator: Holcombe, Jr., C. E.; Smith, D. D.; Richards, H. L. & Lore, J. D.
System: The UNT Digital Library
LMFBR safety. 2. Review of current issues and bibliography of literature, 1970--1972 (open access)

LMFBR safety. 2. Review of current issues and bibliography of literature, 1970--1972

This report discusses the current status of liquid-metal fast breeder reactor (LMFBR) development and one of the principal safety issues, a hypothetical core-disruptive accident (HCDA). Bibliographic information on worldwide LMFBRs relative to the development of the breeder reactor as a safe source of nuclear power is presented for the period 1970 through 1972. The bibliography consists of approximately 1620 abstracts covering early research and development and operating experiences leading up to the present design practices that are necessary for the licensing of breeder reactors. Key-word, author, and permuted-title indexes are included for completeness.
Date: November 22, 1976
Creator: Buchanan, J. R. & Keilholtz, G. W.
System: The UNT Digital Library
Science & Technology Review March/April 2008 (open access)

Science & Technology Review March/April 2008

This month's issue has the following articles: (1) Science and Security in Sharp Focus--Commentary by William H. Goldstein; (2) Extending the Search for Extrasolar Planets--The Gemini Planet Imager will delve deep into the universe to identify planets that cannot be detected with current instrumentation; (3) Standardizing the Art of Electron-Beam Welding--The Laboratory's EBeam Profiler makes electron-beam welds consistent and improves quality control; (4) Molecular Building Blocks Made of Diamonds--Livermore physicists are exploring the electrical properties of diamondoids, tiny molecules of diamond; and (5) Animation Brings Science to Life--Animation helps scientists and engineers effectively communicate their ideas and research in a visually compelling way.
Date: January 22, 2008
Creator: Chinn, D J
System: The UNT Digital Library
Laboratory Directed Research and Development FY2010 Annual Report (open access)

Laboratory Directed Research and Development FY2010 Annual Report

A premier applied-science laboratory, Lawrence Livermore National Laboratory (LLNL) has at its core a primary national security mission - to ensure the safety, security, and reliability of the nation's nuclear weapons stockpile without nuclear testing, and to prevent and counter the spread and use of weapons of mass destruction: nuclear, chemical, and biological. The Laboratory uses the scientific and engineering expertise and facilities developed for its primary mission to pursue advanced technologies to meet other important national security needs - homeland defense, military operations, and missile defense, for example - that evolve in response to emerging threats. For broader national needs, LLNL executes programs in energy security, climate change and long-term energy needs, environmental assessment and management, bioscience and technology to improve human health, and for breakthroughs in fundamental science and technology. With this multidisciplinary expertise, the Laboratory serves as a science and technology resource to the U.S. government and as a partner with industry and academia. This annual report discusses the following topics: (1) Advanced Sensors and Instrumentation; (2) Biological Sciences; (3) Chemistry; (4) Earth and Space Sciences; (5) Energy Supply and Use; (6) Engineering and Manufacturing Processes; (7) Materials Science and Technology; Mathematics and Computing Science; (8) Nuclear …
Date: March 22, 2011
Creator: Jackson, K J
System: The UNT Digital Library
Stress-Dependent Interactions Between Cesium and Other Materials. Summary Report, February 15, 1962-February 15, 1963 (open access)

Stress-Dependent Interactions Between Cesium and Other Materials. Summary Report, February 15, 1962-February 15, 1963

Metals and alloys germane to thermionic energy converter usage were screened for embrittlement by liquid cesium. Techniques are described for more detailed studies of ceramics and susceptible metals. Definite reductions in tensile ductility were observed for 302 stainless steel and molybdenum. Bend ductility was lowered in titanium, titanium-8 aluminum-4 vanadium alloy, niobium, tantalum, and silver-- copper eutectic solder. Some difficulty in reproducibly wetting samples was evident. Slightly contaminating the cesium with oxygen (or water) was observed to increase cesium wettability. (auth)
Date: March 22, 1963
Creator: Levinson, D. W.
System: The UNT Digital Library
Atwater Valley Deep-Towed Sidescan Sonar Imagery and Bathymetric Survey (open access)

Atwater Valley Deep-Towed Sidescan Sonar Imagery and Bathymetric Survey

The purpose of this project was to conduct detailed surface mapping of one of the areas drilled by the Joint Industry Project with ChevronTexaco to understand gas hydrates in the Gulf of Mexico. The gently sloping, mostly flat floor of the Mississippi Canyon is interrupted by mounds and depressions that presumably reflect the complex geology and geohydrology related to turbidite deposition and pervasive salt tectonism. The seafloor mounds we mapped in this study occur in approximately 1300 water depth along the floor of the Mississippi Canyon in lease block areas Atwater Valley 13 and 14. High resolution sidescan sonar (100 kHz and 500 kHz) backscatter imagery, and chirp sub-bottom profiler data were collected using the DT1 deep-towed oceanographic mapping instrument, concentrating on the region directly adjacent to and surrounding two mounds identified as, mounds D and F, and in the region directly adjacent to and surrounding the mounds. The backscatter data have been mosaiced and normalized to provide information on the shape and extent of the mounds, the possible lateral extent of fauna, such as mussel and clam fields on the mounds, possible seep related flows and the occurrence of carbonate material. The extent of a mudflow can be mapped …
Date: November 22, 2005
Creator: Gardner, Joan M.; Czarnecki, Mike; Hagen, Rick; Nishimura, Clyde; Wood, Warren; Vaughn, Chad et al.
System: The UNT Digital Library
Laser power beaming for satellite applications (open access)

Laser power beaming for satellite applications

A serious consideration of laser power beaming for satellite applications appears to have grown out of a NASA mission analysis for transmitting power to lunar bases during the two week dark period. System analyses showed that laser power beaming to the moon in conjunction with efficient, large area solar cell collection panels, were an attractive alternative to other schemes such as battery storage and nuclear generators, largely because of the high space transportation costs. The primary difficulty with this scheme is the need for very high average power visible lasers. One system study indicated that lasers in excess of 10 MW at a wavelength of approximately 850 nm were required. Although such lasers systems have received much attention for military applications, their realization is still a long term goal.
Date: September 22, 1993
Creator: Friedman, H. W.
System: The UNT Digital Library
End-Of-Life Vehicle Recycling: State of the Art of Resource Recovery From Shredder Residue (open access)

End-Of-Life Vehicle Recycling: State of the Art of Resource Recovery From Shredder Residue

Each year, more than 25 million vehicles reach the end of their service life throughout the world, and this number is rising rapidly because the number of vehicles on the roads is rapidly increasing. In the United States, more than 95% of the 10-15 million scrapped vehicles annually enter a comprehensive recycling infrastructure that includes auto parts recyclers/dismantlers, remanufacturers, and material recyclers (shredders). Today, over 75% of automotive materials, primarily the metals, are profitably recycled via (1) parts reuse and parts and components remanufacturing and (2) ultimately by the scrap processing (shredding) industry. The process by which the scrap processors recover metal scrap from automobiles involves shredding the obsolete automobile hulks, along with other obsolete metal-containing products (such as white goods, industrial scrap, and demolition debris), and recovering the metals from the shredded material. The single largest source of recycled ferrous scrap for the iron and steel industry is obsolete automobiles. The non-metallic fraction that remains after the metals are recovered from the shredded materials - commonly called shredder residue - constitutes about 25% of the weight of the vehicle, and it is disposed of in landfills. This practice is not environmentally friendly, wastes valuable resources, and may become uneconomical. …
Date: February 22, 2011
Creator: Jody, B. J.; Daniels, E. J.; Duranceau, C. M.; Pomykala, J. A. & Spangenberger, J. S. (Energy Systems)
System: The UNT Digital Library
Shielded room measurements, Final report (open access)

Shielded room measurements, Final report

The attenuation of electro-statically and electro-magnetically shielded rooms in the ``E,`` ``R,`` ``I,`` and ``T`` Buildings was measured so that corrective measure could be taken if the attenuation was found to be low. If remedial measures could not be taken, the shortcomings of the rooms would be known. Also, the men making the measurements should oversee construction and correct errors at the time. The work was performed by measuring the attenuation at spot frequencies over the range of from 150 kilocycles to 1280 megacycles with suitable equipment mounted in small rubber-tried trucks. The attenuation was determined by ``before and after`` shielding and/or ``door open and door closed`` measurements after installation of copper shielding. In general, attenuation in the frequency range of approximately 10 to 150 mc. was good and was of the order expected. At frequencies in the range of 150 mc. to 1280 mc., the attenuation curve was more erratic; that is, at certain frequencies a severe loss of attenuation was noted, while at others, the attenuation was very good. This was mainly due to poor or faulty seals around doors and pass windows. These poor seals existed in the ``T,`` ``E,`` and ``I`` Buildings because the doors were …
Date: February 22, 1949
Creator: Stanton, J.S.
System: The UNT Digital Library
Survey of plutonium and uranium atom ratios and activity levels in Mortandad Canyon (open access)

Survey of plutonium and uranium atom ratios and activity levels in Mortandad Canyon

For more than three decades Mortandad Canyon has been the primary release area of treated liquid radioactive waste from the Los Alamos National Laboratory (Laboratory). In this survey, six water samples and seven stream sediment samples collected in Mortandad Canyon were analyzed by thermal ionization mass spectrometry (TIMS) to determine the plutonium and uranium activity levels and atom ratios. Be measuring the {sup 240}Pu/{sup 239}Pu atom ratios, the Laboratory plutonium component was evaluated relative to that from global fallout. Measurements of the relative abundance of {sup 235}U and {sup 236}U were also used to identify non-natural components. The survey results indicate the Laboratory plutonium and uranium concentrations in waters and sediments decrease relatively rapidly with distance downstream from the major industrial sources. Plutonium concentrations in shallow alluvial groundwater decrease by approximately 1000 fold along a 3000 ft distance. At the Laboratory downstream boundary, total plutonium and uranium concentrations were generally within regional background ranges previously reported. Laboratory derived plutonium is readily distinguished from global fallout in on-site waters and sediments. The isotopic ratio data indicates off-site migration of trace levels of Laboratory plutonium in stream sediments to distances approximately two miles downstream of the Laboratory boundary.
Date: September 22, 1997
Creator: Gallaher, B. M.; Benjamin, T. M.; Rokop, D. J. & Stoker, A. K.
System: The UNT Digital Library
Reverse Osmosis for Water Desalination (open access)

Reverse Osmosis for Water Desalination

Report issued by the Office of Saline Water over studies conducted on the reverse-osmosis program. The methods of desalination through osmosis are discussed. This report includes tables, illustrations, and photographs.
Date: May 22, 1964
Creator: Lonsdale, H. K.; Merten, U.; Riley, R. L.; Vos, K. D. & Westmoreland, J. C.
System: The UNT Digital Library
Hanford Site National Environmental Policy Act (NEPA) Characterization Report (open access)

Hanford Site National Environmental Policy Act (NEPA) Characterization Report

This document describes the U.S. Department of Energy's (DOE) Hanford Site environment. It is updated each year and is intended to provide a consistent description of the Hanford Site environment for the many National Environmental Policy Act (NEPA) documents being prepared by DOE contractors. No statements of significance or environmental consequences are provided. This year's report is the sixteenth revision of the original document published in 1988 and is (until replaced by the seventeenth revision) the only version that is relevant for use in the preparation of Hanford NEPA, State Environmental Policy Act (SEPA), and Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) documents. The two chapters included in this document (Chapters 4 and 6) are numbered to correspond to the chapters where such information is typically presented in environmental impact statements (Weiss) and other Hanford Site NEPA or CERCLA documentation. Chapter 4.0 (Affected Environment) describes Hanford Site climate and meteorology, geology, hydrology, ecology, cultural, archaeological, and historical resources, socioeconomics, occupational safety and health, and noise. Chapter 6.0 (Statutory and Regulatory Requirements) describes federal and state laws and regulations, DOE directives and permits, and presidential executive orders that are applicable to the NEPA documents prepared for Hanford Site activities.
Date: September 22, 2004
Creator: Neitzel, Duane A.; Bunn, Amoret L.; Cannon, Sandra D.; Duncan, Joanne P.; Fowler, Richard A.; Fritz, Brad G. et al.
System: The UNT Digital Library
Annual Report of the Boy Scouts of America: 1961 (open access)

Annual Report of the Boy Scouts of America: 1961

Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1961, activities, public relations, finance, organizational leadership, and other information about scouting programs.
Date: March 22, 1961
Creator: Boy Scouts of America
System: The Portal to Texas History
Method of Estimating the Stick-Fixed Longitudinal Stability of Wing-Fuselage Configurations Having Unswept or Swept Wings (open access)

Method of Estimating the Stick-Fixed Longitudinal Stability of Wing-Fuselage Configurations Having Unswept or Swept Wings

Memorandum presenting a method for calculating the stick-fixed longitudinal stability of a wing-fuselage configuration at subcritical Mach numbers. The method applies to unswept- and swept-wing configurations. The stability parameters estimated by the method show reasonable agreement with the experimental values for the 23 configurations used in the comparison.
Date: January 22, 1952
Creator: McLaughlin, Milton D.
System: The UNT Digital Library
Study of B Meson Decays to ppbarh Final States (open access)

Study of B Meson Decays to ppbarh Final States

B mesons are unique among well-established non-quarkonium mesons in their ability to decay into baryons. Baryonic B decays offer a wide range of interesting areas of study: they can be used to test our theoretical understanding of rare decay processes involving baryons, search for direct CP violation and study low-energy QCD. This thesis presents measurements of branching fractions and a study of the decay dynamics of the charmless three-body decays of B meson into p{bar p}h final states, where h = {pi}{sup +}, K{sup +}, K{sub S}{sup 0}, K*{sup 0} or K*{sup +}. With a sample of 232 million {Upsilon}(4S) {yields} B{bar B} events collected with the BaBar detector, we report the first observation of the B {yields} p{bar p}K*{sup 0} decay, and provide improved measurements of branching fractions of the other modes. The distribution of the three final-state particles is of particular interest since it provides dynamical information on the possible presence of exotic intermediate states such as the hypothetical pentaquark states {Theta}*{sup ++} and {Theta}{sup +}in the m{sub pK{sup +}} and m{sub pK{sub S}{sup 0}} spectra, respectively, or glueball states (such as the tensor glueball f{sub J}(2220)) in the m{sub p{bar p}} spectrum. No evidence for exotic states …
Date: March 22, 2006
Creator: Hryn'ova, Tetiana B.
System: The UNT Digital Library
Preliminary Report on the Ultrasonic Properties of Uranium (open access)

Preliminary Report on the Ultrasonic Properties of Uranium

This report discusses preliminary results acquired from investigations made on the ultrasonic properties of uranium, such as sonic vibrations in the megacycle frequency range.
Date: October 22, 1952
Creator: Worlton, D. C. & Wood, E. C.
System: The UNT Digital Library
Sensor systems for the Altair Lunar Lander: (open access)

Sensor systems for the Altair Lunar Lander:

The Altair Lunar Lander will enable astronauts to learn to live and work on the moon for extended periods of time, providing the experience needed to expand human exploration farther into the solar system. My overriding recommendation: Use independent and complementary [sometimes referred to as 'orthogonal'] techniques to disambiguate confounding/interfering signals. E.g.: a mass spectrometer ['MS'], which currently serves as a Majority Constituent Analyzer ['MCA'] can be very valuable in detecting the presence of a gaseous specie, so long as it falls on a mass-to-charge ratio ['m/z'] that is not already occupied by a majority constituent of cabin air. Consider the toxic gas, CO. Both N{sub 2} and CO have parent peaks of m/z = 28, and CO{sub 2} has a fragment peak at m/z = 28 [and at 16 and 12], so the N{sub 2} and CO{sub 2} m/z=28 signals could mask low, but potentially-dangerous levels of CO. However there are numerous surface-sensitive CO detectors, as well as tunable-diode-laser-based CO sensors that could provide independent monitoring of CO. Also, by appending a gas chromatograph ['GC'] as the front-end sample processer, prior to the inlet of the MS, one can rely upon the GC to separate CO from N{sub 2} …
Date: December 22, 2009
Creator: Mariella, Raymond, Jr.
System: The UNT Digital Library
Hanford Site Environmental Restoration Program 1994 fiscal year work plan. Work breakdown structure 2.0: Revision 1 (open access)

Hanford Site Environmental Restoration Program 1994 fiscal year work plan. Work breakdown structure 2.0: Revision 1

Site Management System (SMS) guidance requires a Fiscal Year Work Plan (FYWP) to be prepared for the Environmental Restoration (ER) Mission Area and all related programs. This revision is a complete update to cover the FY 1994 time period. This document describes the overall ER Missions Area and provides FYWP appendices for each of the following five program areas: Remedial Action (RA); Decontamination and Decommissioning (D&D); Project Management and Support (PM&S); Surveillance and Maintenance (S&M); and Disposal Facilities (DF).
Date: December 22, 1993
Creator: unknown
System: The UNT Digital Library
Pulsed Neutron Scattering Studies of Strongly Fluctuating solids, Final Report (open access)

Pulsed Neutron Scattering Studies of Strongly Fluctuating solids, Final Report

The conventional description of a solid is based on a static atomic structure with small amplitude so-called harmonic fluctuations about it. This is a final technical report for a project that has explored materials where fluctuations are sufficiently strong to severely challenge this approach and lead to unexpected and potentially useful materials properties. Fluctuations are enhanced when a large number of configurations share the same energy. We used pulsed spallation source neutron scattering to obtain detailed microscopic information about structure and fluctuations in such materials. The results enhance our understanding of strongly fluctuating solids and their potential for technical applications. Because new materials require new experimental techniques, the project has also developed new techniques for probing strongly fluctuating solids. Examples of material that were studied are ZrW2O8 with large amplitude molecular motion that leads to negative thermal expansion, NiGa2S4 where competing interactions lead to an anomalous short range ordered magnet, Pr1- xBixRu2O7 where a partially filled electron shell (Pr) in a weakly disordered environment produces anomalous metallic properties, and TbMnO3 where competing interactions lead to a magneto-electric phase. The experiments on TbMnO3 exemplify the relationship between research funded by this project and future applications. Magneto-electric materials may produce a magnetic …
Date: June 22, 2006
Creator: Broholm, Collin
System: The UNT Digital Library
Deflection and Stress Analysis of the Yankee Core Support Structure (open access)

Deflection and Stress Analysis of the Yankee Core Support Structure

The deflection and stresses of a medel of the Yankee lower core support structure, conslstlng of two clrcular perforated plates joined together by a clrcular reinforclng rib and 76 cylindrical spacers, were obtained experimentally. The relationships between the tests on the model and reference design were determined by an application of dimensional analysis. Experimental investigations are described in which various design parameters were determined and the structural rigidity of the assembly was obtained. A rational methed of semitheoretical analysis of the problem is suggested based on Reissner's small deflectlon theory which takes into account the effect of transverse shear and normal stress deformation. (auth)
Date: September 22, 1958
Creator: Eng, G. H.
System: The UNT Digital Library
Criminal Procedure: Brief Summaries of Major Decisions of the "Warren Court" Relating to the Rights of Persons Accused of Crime (open access)

Criminal Procedure: Brief Summaries of Major Decisions of the "Warren Court" Relating to the Rights of Persons Accused of Crime

This report discusses Supreme Court decisions made during the tenure of Earl Warren as Chief Justice from 1953 to 1969 related to criminal procedure and the rights of the accused.
Date: August 22, 1969
Creator: Hutton, E. Jeremy
System: The UNT Digital Library
Criminal Procedures: Brief Summaries of Major Decisions of The "Warren Court" Relating to the Rights of Persons Accused of Crime (open access)

Criminal Procedures: Brief Summaries of Major Decisions of The "Warren Court" Relating to the Rights of Persons Accused of Crime

This report is a summary of case holdings that pertain to expanding the rights of people accused of or under investigation for crimes.
Date: August 22, 1969
Creator: Hutton, E. Jeremy
System: The UNT Digital Library
Medicaid: Source of Screening Affects Women's Eligibility for Coverage of Breast and Cervical Cancer Treatment in Some States (open access)

Medicaid: Source of Screening Affects Women's Eligibility for Coverage of Breast and Cervical Cancer Treatment in Some States

A letter report issued by the Government Accountability Office with an abstract that begins "Tens of thousands of women die each year from breast or cervical cancer. While screening and early detection through mammograms and Pap tests--followed by treatment--can improve survival, low-income, uninsured women are often not screened. In 1990, Congress authorized the Centers for Disease Control and Prevention (CDC) to fund screening and diagnostic services for such women, which led CDC to establish the National Breast and Cervical Cancer Early Detection Program. The Breast and Cervical Cancer Prevention and Treatment Act of 2000 was also enacted to allow states to extend Medicaid eligibility to women screened under the Early Detection Program and who need breast or cervical cancer treatment. Screened under the program is defined, at a minimum, as screening paid for with CDC funds. GAO examined the Early Detection Program's screening of eligible women, states' implementation of the Treatment Act, Medicaid enrollment and spending under the Treatment Act, and alternatives available to women ineligible for Medicaid under the Treatment Act. To do this, GAO compared CDC data on women screened by the Early Detection Program from 2002 to 2006 with federal estimates of the eligible population, surveyed program …
Date: May 22, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library