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Frame work on an on-line regulations expert permit server, Semi-annual technical progress report, September 25, 1996--March 24, 1997

Description: The Interstate Oil and Gas Compact Commission and its member states have become increasingly concerned about environmental compliance costs for the petroleum exploration and production industry with estimated costs for 1990 at about $2 billion. Over the last decade, these costs have increased at a rate of 3 to 5% per year. At a time when regulatory and environmental needs and costs are increasing, major oil companies are restructuring and reducing staffs. The places an increased burden on the r… more
Date: March 24, 1997
Creator: Hansen, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Proposal for a cryogenic magnetic field measurement system for SSC dipole magnets

Description: This proposal describes the research and development required, and the subsequent fabrication of, a system capable of making integrated magnetic multipole measurements of cryogenic 40-mm-bore SSC dipole magnets utilizing a cryogenic probe. Our experience and some preliminary studies indicate that it is highly unlikely that a 16-meter-long probe can be fabricated that will have a twist below several milliradians at cryogenic temperatures. We would anticipate a twist of several milliradians just … more
Date: March 1, 1991
Creator: Green, M.I. & Hansen, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Pressure as a probe of the glassy state of ferroelectrics with random site disorder

Description: Results on lanthanum-modified lead zirconate-titanates (PLZTs) have revealed a pressure-induced crossover from a normal ferroelectric to a relaxor state and the continuous evolution of the dynamics and energetics of the relaxation process. This crossover appears to be a general feature of soft mode ferroelectrics with random site dipolar impurities or polar nanodomains and results from a large decrease in the correlation radius among polar nanodomains -- a unique property of soft mode ferroelec… more
Date: March 10, 1998
Creator: Samara, G.A. & Hansen, L.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Physical and mechanical properties of degraded waste surrogate material

Description: This paper discusses rock mechanics testing of surrogate materials to provide failure criteria for compacted, degraded nuclear waste. This daunting proposition was approached by first assembling all known parameters such as the initial waste inventory and rock mechanics response of the underground setting after the waste is stored. Conservative assumptions allowing for extensive degradation processes helped quantify the lowest possible strength conditions of the future state of the waste. In th… more
Date: March 1, 1998
Creator: Hansen, F. D. & Mellegard, K. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design and development of the vacuum systems for the APT project ED & D cryomodule

Description: The mechanical design for both the insulating vacuum system and the cavity vacuum system of the APT ED and D Cryomodule is summarized. The pre-cooldown pressure limits for the insulating vacuum and the cavity vacuum are 10{sup {minus}5} Torr and 10{sup {minus}6} Torr, respectively. In addition, the cold cavity operating pressure limits are 10{sup {minus}6} Torr for the insulating system and 10{sup {minus}8} Torr for the cavity system. The designs of these systems utilize both turbomolecular pum… more
Date: March 25, 1999
Creator: Hansen, G.; Kishiyama, K.; Shen, S. & Shoaff, P. V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Circular intensity differential scattering (CIDS) measurements in the soft x-ray region of the spectrum (@16 eV to 500 eV)

Description: We propose the use of recently developed techniques of circular intensity differential scattering (CIDS), as extended to the soft x-ray region of the spectrum (16 eV to 500 eV), to study the higher order organization of the eukaryotic chromosome. CIDS is the difference in scattering power of an object when illuminated by right circularly polarized vs. left circularly polarized electromagnetic radiation of arbitrary wavelength. CIDS has been shown to be a very sensitive measure of the helical or… more
Date: March 1, 1991
Creator: Maestre, M .F.; Bustamante, C.; Snyder, P.; Rowe, E. & Hansen, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A data distributed, parallel algorithm for ray-traced volume rendering

Description: This paper presents a divide-and-conquer ray-traced volume rendering algorithm and its implementation on networked workstations and a massively parallel computer, the Connection Machine CM-5. This algorithm distributes the data and the computational load to individual processing units to achieve fast, high-quality rendering of high-resolution data, even when only a modest amount of memory is available on each machine. The volume data, once distributed, is left intact. The processing nodes perfo… more
Date: March 30, 1993
Creator: Ma, Kwan-Liu; Painter, J. S.; Hansen, C. D. & Krogh, M. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Estimation of costs for applications of remediation technologies for the Department of Energy`s Programmatic Environmental Impact Statement

Description: The Programmatic Environmental impact Statement (PEIS) being developed by the US Department of Energy (DOE) for environmental restoration (ER) and waste management (WM) activities expected to be carried out across the DOE`s nationwide complex of facilities is assessing the impacts of removing, transporting, treating, storing, and disposing of waste from these ER and WM activities. Factors being considered include health and safety impacts to the public and to workers, impacts on the environment… more
Date: March 1, 1994
Creator: Villegas, A. J.; Hansen, R. I.; Humphreys, K. K.; Paananen, J. M. & Gildea, L. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The performance assessment impacts of disposal of high-moisture, low-level radioactive waste at the Nevada Test Site

Description: A panel of independent scientists was convened by the Department of Energy to assess the performance impacts of disposal of low-level radioactive waste from the Fernald Environmental Management Project. This waste stream was involved in a transportation incident in December 1997. A resulting outgrowth of investigations of the transportation incident was the recognition that the waste was transported and disposed in stress-fractured metal boxes and some of the waste contained excess moisture (hi… more
Date: March 1, 1999
Creator: Crowe, B.M.; Hansen, W.; Hechnova, A.; Jacobson, R.; Voss, C.; Waters, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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