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11,813 Matching Results
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A Multi-TeV Linear Collider Based on CLIC Technology : CLIC Conceptual Design Report
None
Date:
February 13, 2014
Creator:
Aicheler, M; Burrows, P.; Draper, M.; Garvey, T.; Lebrun, P.; Peach, K. et al.
System:
The UNT Digital Library
Improving paper machine efficiency through on-line control of stock delivery, headbox and forming hydrodynamics. Quarterly report
None
Date:
February 1, 2000
Creator:
Aidun, Cyrus K.
System:
The UNT Digital Library
The Grand Challenge of Managing the Petascale Facility.
This report is the result of a study of networks and how they may need to evolve to support petascale leadership computing and science. As Dr. Ray Orbach, director of the Department of Energy's Office of Science, says in the spring 2006 issue of SciDAC Review, 'One remarkable example of growth in unexpected directions has been in high-end computation'. In the same article Dr. Michael Strayer states, 'Moore's law suggests that before the end of the next cycle of SciDAC, we shall see petaflop computers'. Given the Office of Science's strong leadership and support for petascale computing and facilities, we should expect to see petaflop computers in operation in support of science before the end of the decade, and DOE/SC Advanced Scientific Computing Research programs are focused on making this a reality. This study took its lead from this strong focus on petascale computing and the networks required to support such facilities, but it grew to include almost all aspects of the DOE/SC petascale computational and experimental science facilities, all of which will face daunting challenges in managing and analyzing the voluminous amounts of data expected. In addition, trends indicate the increased coupling of unique experimental facilities with computational facilities, …
Date:
February 28, 2007
Creator:
Aiken, R. J. & Science, Mathematics and Computer
System:
The UNT Digital Library
Characterizing the fabric of the urban environment: A case study of Salt Lake City, Utah
Urban fabric data are needed in order to estimate the impact of light-colored surfaces (roofs and pavements) and urban vegetation (trees, grass, shrubs) on the meteorology and air quality of a city, and to design effective implementation programs. In this report, we discuss the result of a semi-automatic Monte-Carlo statistical approach used to develop data on surface-type distribution and city-fabric makeup (percentage of various surface-types) using aerial color orthophotography. The digital aerial photographs for Salt Lake City covered a total of about 34 km2 (13 mi2). At 0.50-m resolution, there were approximately 1.4 x 108 pixels of data. Four major land-use types were examined: (1) commercial, (2) industrial, (3) educational, and (4) residential. On average, for the areas studied, vegetation covers about 46 percent of the area (ranging 44-51 percent), roofs cover about 21 percent (ranging 15-24 percent), and paved surfaces about 26 percent (ranging 21-28 percent). For the most part, trees shade streets, parking lots, grass, and sidewalks. In most non-residential areas, paved surfaces cover 46-66 percent of the area. In residential areas, on average, paved surfaces cover about 32 percent of the area. Land-use/land-cover (LU/LC) data from the United States Geological Survey were used to extrapolate these results …
Date:
February 28, 2001
Creator:
Akbari, Hashem & Rose, L. Shea
System:
The UNT Digital Library
Bond Strength of Cementitious Borehole Plugs in Welded Tuff
Axial loads on plugs or seals in an underground repository due to gas, water pressures and temperature changes induced subsequent to waste and plug emplacement lead to shear stresses at the plug/rock contact. Therefore, the bond between the plug and rock is a critical element for the design and effectiveness of plugs in boreholes, shafts or tunnels. This study includes a systematic investigation of the bond strength of cementitious borehole plugs in welded tuff. Analytical and numerical analysis of borehole plug-rock stress transfer mechanics is performed. The interface strength and deformation are studied as a function of Young`s modulus ratio of plug and rock, plug length and rock cylinder outside-to-inside radius ratio. The tensile stresses in and near an axially loaded plug are analyzed. The frictional interface strength of an axially loaded borehole plug, the effect of axial stress and lateral external stress, and thermal effects are also analyzed. Implications for plug design are discussed. The main conclusion is a strong recommendation to design friction plugs in shafts, drifts, tunnels or boreholes with a minimum length to diameter ratio of four. Such a geometrical design will reduce tensile stresses in the plug and in the host rock to a level …
Date:
February 1, 1991
Creator:
Akgun, H. & Daemen, J. J. K.
System:
The UNT Digital Library
Cost analysis of energy storage systems for electric utility applications
Under the sponsorship of the Department of Energy, Office of Utility Technologies, the Energy Storage System Analysis and Development Department at Sandia National Laboratories (SNL) conducted a cost analysis of energy storage systems for electric utility applications. The scope of the study included the analysis of costs for existing and planned battery, SMES, and flywheel energy storage systems. The analysis also identified the potential for cost reduction of key components.
Date:
February 1, 1997
Creator:
Akhil, A.; Swaminathan, S. & Sen, R.K.
System:
The UNT Digital Library
CSDP: the seismology of continental thermal regimes. Final technical report, January 1, 1975-December 31, 1984
Research progress is reported in the development of new seismological tools to define and characterize the geometry, mechanical construction and mass transport process of a geothermal system, and their application to various geothermal systems including the Fenton Hill Hot Dry Rock System, New Mexico, Kilauea and Kilauea Iki, Hawaii, Mt. St. Helens, Washington, and Long Valley, California. (ACR)
Date:
February 1, 1985
Creator:
Aki, K.
System:
The UNT Digital Library
Investigation of syngas interaction in alcohol synthesis catalysts. Quartery technical progress report, July 1, 1995--September 31, 1995
This report presents the work done on {open_quotes}Investigation of Syngas Interaction in Alcohol Synthesis Catalysts{close_quotes} during the last three months. In this report the results of the work done on the effect of CO adsorption on the magnetic character of cobalt in the Cu/Co/Cr catalysts is discussed.
Date:
February 1, 1996
Creator:
Akundi, M. A.
System:
The UNT Digital Library
Pacific Northwest Laboratory monthly activities report, January 1968
Analysis of Columbia River temperature trends indicates conformity with those previously reported. Despite unusually high average temperatures, the temperatures of the upper and lower extremes continued to converge on the mean. The construction of the John Day Dam is expected to have little temperature effect other than a delay of ten days in the timing of the annual temperature peak. Measurements of radioactivity in 465 children were completed at the third Pasco elementary school on January 12. Whole-body counting at the fourth school began on January 24, following lectures to the staff and 17 classrooms. The whole-body counter was recalibrated for K{sup 40} and Zn{sup 65} in late January. Only small modifications in the calibration factors over those currently employed are expected. Washington State Game Department personnel have supplied sufficient pheasant and quail samples shot near the Columbia River for comparison of radionuclide content between species and collection of these samples has been discontinued. The Department of Game continues to supply ``road-kills`` for radiochemical analysis in exchange for x-ray data on the number of birds which contain shot. A game-bird questionnaire for mailing to a statistical sample of Tri-City hunting license holders was drafted in January.
Date:
February 1, 1968
Creator:
Albaugh, F. W.
System:
The UNT Digital Library
HTGR accident initiation and progression analysis status report. Volume V. AIPA fission product source terms
The primary objective of the Accident Initiation and Progression Analysis (AIPA) Program is to provide guidance for high-temperature gas-cooled reactor (HTGR) safety research and development. Among the parameters considered in estimating the uncertainties in site boundary doses are uncertainties in fission product source terms generated under normal operating conditions, i.e., fuel body inventories, circulating coolant activity, total plateout activity in the primary circuit, and plateout distributions. The volume presented documents the analyses of these source term uncertainties. The results are used for the detailed consequence evaluations, and they provide the basis for evaluation of fission products important for HTGR maintenance and shielding.
Date:
February 1, 1976
Creator:
Alberstein, D.; Apperson, C. E. Jr.; Hanson, D. L.; Myers, B. F. & Pfeiffer, W. W.
System:
The UNT Digital Library
SuperB: a Linear High-Luminosity B Factory
This paper is based on the outcome of the activity that has taken place during the recent workshop on ''SuperB in Italy'' held in Frascati on November 11-12, 2005. The workshop was opened by a theoretical introduction of Marco Ciuchini and was structured in two working groups. One focused on the machine and the other on the detector and experimental issues.. The present status on CP is mainly based on the results achieved by BABAR and Belle. Establishment of the indirect CP violation in B sector in 2001 and of the direct CP violation in 2004 thanks to the success of PEP-II and KEKB e{sup +}e{sup -} asymmetric B Factories operating at the center of mass energy corresponding to the mass of the {Upsilon}(4S ). With the two B Factories taking data, the Unitarity Triangle is now beginning to be over constrained by improving the measurements of the sides and now also of the angles {alpha}, and {gamma}. We are also in presence of the very intriguing results about the measurements of sin2{beta} in the time dependent analysis of decay channels via penguin loops, where b {yields} s{bar s}s and b {yields} s{bar d}d. {tau} physics, in particular LFV search, …
Date:
February 8, 2006
Creator:
Albert, J.; Bettarini, S.; Biagini, M.; Bonneaud, G.; Cai, Y.; Calderini, G. et al.
System:
The UNT Digital Library
Temporal aspects of tumorigenic response to individual and mixed carcinogens. [Response of mouse skin to benzo(a)pyrene]
Results are reported from experiments that involved either single or multiple doses of benzo(a)pyrene in mouse skin followed by prolonged observation. Preliminary results indicate linearity in dose and time and no evidence of recovery or enhancement for multiple doses of initiator given for extended periods of time. (auth)
Date:
February 1, 1976
Creator:
Albert, R. E. & Burns, F. J.
System:
The UNT Digital Library
Temporal aspects of tumorigenic response to individual and mixed carcinogens. Comprehensive progress report, June 1, 1975--May 31, 1978. [Mouse skin, rats, hamsters]
The research proposed here is designed to obtain a better understanding of the temporal kinetics of tumor induction when one or more carcinogens are present simultaneously or sequentially for prolonged periods of time. Studies done to date under this contract have shown that carcinogenesis in mouse skin by polycyclic aromatic hydrocarbon carcinogens is consistent with the induction of dependent and autonomous cell transformations by the carcinogen followed by the conversion of autonomous tumor cells into malignancies at a rate which is determined by the level of carcinogen exposure. Dependent cell transformations remain latent in the skin unless expressed by a promoting agent. Dependent neoplasia appears to follow one-hit kinetics while malignancy is a multihit endpoint. Dose-related and time-related aspects of tumor induction are separable in the initiation-promotion system of mouse skin which along with rat skin and hamster lung is being used as a model for testing hypotheses. Results to date provide the basis for a new interpretation of the linear non-threshold extrapolation model. The broad aim of the study is to provide a basis or rationale for estimating risks associated with prolonged exposures to carcinogens found in the environment and to predict how different tissues and species respond to …
Date:
February 1, 1978
Creator:
Albert, R. E.; Burns, F. J. & Altshuler, B.
System:
The UNT Digital Library
Scale-Up of CdTe Photovoltaic Device Processes for Commercial Application: Cooperative Research and Development Final Report, CRADA Number CRD-06-196
Through this Cooperative Research and Development Agreement, NREL and PrimeStar Solar will work together to scale up the NREL CdTe photovoltaic process from the laboratory to produce photovoltaic devices in a size that is commercially viable. The work in this phase will focus on the transference of NREL CdTe device fabrication techniques to PrimeStar Solar. NREL and PrimeStar Solar will engage in a series of technical exchange meetings and laboratory training sessions to transfer the knowledge of CdTe PV film growth from NREL to PrimeStar Solar. PrimeStar Solar will grow thin films on PrimeStar Solar equipment and interleave them with NREL-grown films in an effort to develop a commercial scale process on PrimeStar Solar equipment. Select NREL film growth equipment will be upgraded either by PrimeStar Solar or at PrimeStar Solar's expense to increase equipment reliability and throughput.
Date:
February 1, 2013
Creator:
Albin, D.
System:
The UNT Digital Library
THE NUCLEAR FUEL CYCLE: PROSPECTS FOR REDUCING ITS COST
Nuclear fuel cost of 1.25 mills/kwh would make nuclear power competitive with conventional power in lowcost coal areas if capital and operating costs can be brought to within about 10 percent of those of coal-fired plants. Substantial decreases in fuel fabrication cost are anticipated by 1970: other costs in the fuel cycle are expccted to remain about the same as at present. Unit costs and irradiation levels that would be needed to give a fuel cost of 1.25 mills/kwh are believed to be attainable by 1970. (auth)
Date:
February 20, 1959
Creator:
Albrecht, W.L.
System:
The UNT Digital Library
Report of the First Confidence Building Exercise For Biomedical Sample Analysis
We participated in the first exercise to build confidence in the analysis of biomedical samples for trace levels of CW agents and/or their degradation, reaction or metabolites.
Date:
February 24, 2010
Creator:
Alcaraz, A. & Gregg, H.
System:
The UNT Digital Library
Sample Proficiency Test exercise
The current format of the OPCW proficiency tests has multiple sets of 2 samples sent to an analysis laboratory. In each sample set, one is identified as a sample, the other as a blank. This method of conducting proficiency tests differs from how an OPCW designated laboratory would receive authentic samples (a set of three containers, each not identified, consisting of the authentic sample, a control sample, and a blank sample). This exercise was designed to test the reporting if the proficiency tests were to be conducted. As such, this is not an official OPCW proficiency test, and the attached report is one method by which LLNL might report their analyses under a more realistic testing scheme. Therefore, the title on the report ''Report of the Umpteenth Official OPCW Proficiency Test'' is meaningless, and provides a bit of whimsy for the analyses and readers of the report.
Date:
February 5, 2006
Creator:
Alcaraz, A.; Gregg, H. & Koester, C.
System:
The UNT Digital Library
Radiation dose measurements of the insertion devices
None
Date:
February 28, 2002
Creator:
Alderman, J & Job, P. K.
System:
The UNT Digital Library
Radiation dose measurements of the insertion devices
The Advanced Photon Source (APS) uses Nd-Fe-B permanent magnets in the insertion devices to produce x-rays for scientific research. Earlier investigations have exhibited varying degrees of demagnetization of these magnets due to irradiation from electron beams, {sup 60}Co {gamma}-rays, and high-energy neutrons. Although no detectable radiation-induced demagnetization has been observed in the APS insertion devices so far, partial demagnetization has been observed in at lest one insertion device at the European Synchrotron Radiation Facility (ESRF), where Nd-Fe-B permanent magnets are also used. A growing concern for the APS insertion devices, as well as the permanent magnets that will be used in next generation high-power light sources, like the FEL, resulted from the partial demagnetization observed in the ESRF devices. This concern in relation to radiation-induced demagnetization spurred a long-term project aimed to measure and analyze the total absorbed doses received by the APS insertion devices. The project required a reliable photon high dose dosimetry technique capable of measuring absorbed doses greater than 10{sup 6} rad, which was not readily available at the APS. Through a collaboration with the National Institute of Standards and Technology (NIST), one such technique using radiachromic films was considered, tested, and calibrated at the APS. This …
Date:
February 28, 2000
Creator:
Alderman, J.; Semones, E. & Job, P.K.
System:
The UNT Digital Library
Achieve Continuous Injection of Solid Fuels into Advanced Combustion System Pressures
This report is a descriptive journey of the Achieve Continuous Injection of Solid Fuels into Advanced Combustion System Pressures.
Date:
February 28, 2008
Creator:
Aldred, Derek L. & Saunders, Timothy
System:
The UNT Digital Library
Public Protection Strategies for Potential Nuclear Reactor Accidents: Sheltering Concepts with Existing Public and Private Structures
Three generic sheltering/relocation strategies are identified and discussed. They are: population relocation only (no specific sheltering response initiated); sheltering at location following by relocation; and preferential sheltering followed by relocation. Shielding factors representative of these strategies are calculated, and the adequacy of using average shielding factors for the calculation of public health effects is discussed.
Date:
February 1, 1978
Creator:
Aldrich, David C.; Ericson, David M. Jr. & Johnson, Jay D.
System:
The UNT Digital Library
Evaluating Ventilation Systems for Existing Homes
During the course of this project, an affordable and high performance ductwork system to directly address the problems of thermal losses, poor efficiency, and air leakage was designed. To save space and enable direct connections between different floors of the building, the ductwork system was designed in such a way that it occupied interior or exterior frame wall cavities. The ductwork system satisfied building regulations for structural support when bridging multiple floors, the spread of fire and smoke, and insulation to reduce the heat flow into or out of the building. Retrofits of urban residential buildings will be the main focus for the application of this ductwork system. Highly reflective foils and insulating materials were used to aid in the increase of the overall R-value of the ductwork itself and the wall assembly. It is expected that the proposed system will increase the efficiency of the HVAC system and the thermal resistance of the building envelope. The performance of the proposed ductwork design was numerically evaluated in a number of different ways. Our results indicate that the duct method is a very cost attractive alternative to the conventional method.
Date:
February 1, 2013
Creator:
Aldrich, R. & Arena, L.
System:
The UNT Digital Library
Development of advanced technologies for photochemical tritium recovery. Bi-quarterly progress report, July 1, 1981-December 31, 1981. [From heavy water]
A process to photochemically remove tritium from heavy water has been described previously. Order-of-magnitude cost estimates for this process have been made, based on the specifications, assumptions, and parameters. The estimated costs of each unit and of the complete system are given. The total capital cost (excluding laser cost) of $650,000 corresponds to a cost of $0.08/Ci tritium removed, for plant amortization over one year. The electrical load is about 154 kW; this is equal to a cost of $0.01/Ci tritium removed (80% capacity factor, $0.05/kWh). Therefore the order-of-magnitude total cost of tritium removal is about $0.09/Ci. Experimental data on the D/sub 2/0/DTO/CDCl/sub 3/ system are needed to permit a detailed design of the exchange unit; the necessary experiments will soon be performed by a summer student. The stripper concept must also be better defined. With a good understanding of these units, the crucial parameters and tradeoffs can be identified and balanced in a final process design. The collaborative effort with the Savannah River Laboratory will help with process development, and will ensure that all Savannah River Plant requirements are met.
Date:
February 3, 1982
Creator:
Aldridge, F. T.; Herman, I. P.; Magnotta, F. & Marling, J. B.
System:
The UNT Digital Library
FLOWTRAN-TF v1. 2 source code
The FLOWTRAN-TF code development effort was initiated in early 1989 as a code to monitor production reactor cooling systems at the Savannah River Plant. This report is a documentation of the various codes that make up FLOWTRAN-TF.
Date:
February 1, 1993
Creator:
Aleman, S. E.; Cooper, R. E.; Flach, G. P.; Hamm, L. L.; Lee, S. & Smith, F. G., III
System:
The UNT Digital Library