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Altus Times (Altus, Okla.), Vol. 98, No. 242, Ed. 1 Tuesday, December 30, 1997
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 30, 1997
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Ambient-temperature passive magnetic bearings: Theory and design equations
Research has been underway at the Lawrence Livermore National Laboratory to build a theoretical and experimental base for the design of ambient-temperature passive magnetic bearings for a variety of possible applications. in the approach taken the limitations imposed by Earnshaw`s theorem with respect to the stability of passive magnetic bearing systems employing axially symmetric permanent-magnet elements are overcome by employing special combinations of elements, as follows: Levitating and restoring forces are provided by combinations of permanent-magnet-excited elements chosen to provide positive stiffnesses (negative force derivatives) for selected displacements (i.e., those involving translations or angular displacement of the axis of rotation). As dictated by Eamshaw`s theorem, any bearing system thus constructed will be statically unstable for at least one of the remaining possible displacements. Stabilization against this displacement is accomplished by using periodic arrays (`Halbach arrays`) of permanent magnets to induce currents in close-packed inductively loaded circuits, thereby producing negative force derivatives stabilizing the system while in rotation. Disengaging mechanical elements stabilize the system when at rest and when below a low critical speed. The paper discusses theory and equations needed for the design of such systems.
Date:
December 30, 1997
Creator:
Post, R. F. & Ryutov, D. D.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 76, No. 51, Ed. 1 Tuesday, December 30, 1997
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 30, 1997
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 93, No. 104, Ed. 1 Tuesday, December 30, 1997
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
December 30, 1997
Creator:
Aldridge, Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Char Crystalline Transformations During Coal Combustion and Their Implication for Carbon Burnout
Recent work at Sandia National Laboratories, Imperial College, and the U.K. utility PowerGen, has identified an important mechanism believed to have a large influence on unburned carbon levels from pulverized coal fired boilers. That mechanism is char carbon crystalline rearrangements on subsecond times scales at temperatures of 1800 - 2500 K, which lead to char deactivation in the flame zones of furnaces. The so-called thermal annealing of carbons is a well known phenomenon, but its key role in carbon burnout has only recently been appreciated, and there is a lack of quantitative data in this time/temperature range. In addition, a new fundamental tool has recently become available to study crystalline transformations, namely high resolution transmission electron microscopy (HRTEM) fringe imaging, which provides a wealth of information on the nature and degree of crystallinity in carbon materials such as coal chars. Motivated by these new developments, this University Coal Research project has been initiated with the following two goals: to determine transient, high-temperature, thermal deactivation kinetics as a function of parent coal and temperature history. to characterize the effect of this thermal treatment on carbon crystalline structure through high-resolution transmission electron microscopy and specialized, quantitative image analysis. Work is …
Date:
December 30, 1997
Creator:
Hurt, Robert H.
Object Type:
Report
System:
The UNT Digital Library
Chickasha Daily Express (Chickasha, Okla.), Ed. 1 Tuesday, December 30, 1997
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 30, 1997
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Daily Chickasha Star (Chickasha, Okla.), Vol. 96, No. 167, Ed. 1 Tuesday, December 30, 1997
Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 30, 1997
Creator:
Settle, David
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Dose and volume specification for reporting interstitial therapy
The ICRU has previously published reports dealing with Dose Specification for Reporting External Beam Therapy with Photons and Electrons (ICRU Report 29, ICRU, 1978), Dose Specification for Reporting External Beam Therapy (ICRU Report 50, ICRU, 1993) and Dose and Volume Specification for Reporting Intracavitary Therapy in Gynecology (ICRU Report 38, ICRU, 1985). The present report addresses the problem of absorbed dose specification for report interstitial therapy. Although specific to interstitial therapy, many of the concepts developed in this report are also applicable to certain other kinds of brachytherapy applications. In particular, special cases of intraluminal brachytherapy and plesio-brachytherapy via surface molds employing x or gamma emitters are addressed in this report.
Date:
December 30, 1997
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Garber Billings News (Garber, Okla.), Vol. 98, No. 12, Ed. 1 Tuesday, December 30, 1997
Weekly newspaper from Garber, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 30, 1997
Creator:
Hogan, Vickie Lee
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Immobilized low-activity waste interim storage facility, Project W-465 conceptual design report
This report outlines the design and Total Estimated Cost to modify the four unused grout vaults for the remote handling and interim storage of immobilized low-activity waste (ILAW). The grout vault facilities in the 200 East Area of the Hanford Site were constructed in the 1980s to support Tank Waste disposal activities. The facilities were to serve project B-714 which was intended to store grouted low-activity waste. The existing 4 unused grout vaults, with modifications for remote handling capability, will provide sufficient capacity for approximately three years of immobilized low activity waste (ILAW) production from the Tank Waste Remediation System-Privatization Vendors (TWRS-PV). These retrofit modifications to the grout vaults will result in an ILAW interim storage facility (Project W465) that will comply with applicable DOE directives, and state and federal regulations.
Date:
December 30, 1997
Creator:
Pickett, W.W.
Object Type:
Report
System:
The UNT Digital Library
The Mannford Star (Mannford, Okla.), Vol. 2, No. 123, Ed. 1 Tuesday, December 30, 1997
Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 30, 1997
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
MELT INSLUSIONS IN COMPOSITIONALLY ZONED TUFF, SOUTHWESTERN NEVADA VOLCANIC FIELD
None
Date:
December 30, 1997
Creator:
DICKERSON, ROBERT
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Apt. Fire]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 5:00 P.M.
Date:
December 30, 1997
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: X- mas sales package]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
December 30, 1997, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
PDJ Daily Journal (Perry, Okla.), Vol. 104, No. 259, Ed. 1 Tuesday, December 30, 1997
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 30, 1997
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Reprocessing of Shallow Seismic Reflection Data to Image Faults Near a Hazardous Waste Site on the Oak Ridge Reservation, Tennessee
Shallow seismic reflection data from Bear Creek Valley on the Oak Ridge Reservation demonstrates that spectral balancing and tomographic refraction statics can be important processing tools for shallow seismic data. At this site, reprocessing of data which had previously yielded no useable CMP stacked sections was successful after application of these processing techniques.
Date:
December 30, 1997
Creator:
Doll, William E.
Object Type:
Report
System:
The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 83, No. 91, Ed. 1 Tuesday, December 30, 1997
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 30, 1997
Creator:
Diehl, Don
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Sensitivity analysis and model reduction of nonlinear differential-algebraic systems. Final progress report
Differential-algebraic equations arise in a wide variety of engineering and scientific problems. Relatively little work has been done regarding sensitivity analysis and model reduction for this class of problems. Efficient methods for sensitivity analysis are required in model development and as an intermediate step in design optimization of engineering processes. Reduced order models are needed for modelling complex physical phenomena like turbulent reacting flows, where it is not feasible to use a fully-detailed model. The objective of this work has been to develop numerical methods and software for sensitivity analysis and model reduction of nonlinear differential-algebraic systems, including large-scale systems. In collaboration with Peter Brown and Alan Hindmarsh of LLNL, the authors developed an algorithm for finding consistent initial conditions for several widely occurring classes of differential-algebraic equations (DAEs). The new algorithm is much more robust than the previous algorithm. It is also very easy to use, having been designed to require almost no information about the differential equation, Jacobian matrix, etc. in addition to what is already needed to take the subsequent time steps. The new algorithm has been implemented in a version of the software for solution of large-scale DAEs, DASPK, which has been made available on the …
Date:
December 30, 1997
Creator:
Petzold, Linda R. & Rosen, J. Ben
Object Type:
Report
System:
The UNT Digital Library
TWRS safety SSCs: Requirements and characteristics
Safety Systems, Structures, and Components (SSCs) have been identified from hazard and accident analyses. These analyses were performed to support the Tank Waste Remediation System (TWRS) Final Safety Analysis Report (FSAR) and Basis for Interim Operation (BID). The text identifies and evaluates the SSCs and their supporting SSCs to show that they either prevent the occurrence of the accident or mitigate the consequences of the accident to below the acceptance guidelines. The requirements for the SSCs to fulfill these tasks are described.
Date:
December 30, 1997
Creator:
Smith-Fewell, M. A.
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 98, No. 217, Ed. 1 Sunday, November 30, 1997
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 30, 1997
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Alvin Sun-Advertiser (Alvin, Tex.), Vol. 107, No. 32, Ed. 1 Sunday, November 30, 1997
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
November 30, 1997
Creator:
Schwind, Jim & Dodson, Doug
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 76, No. 25, Ed. 1 Sunday, November 30, 1997
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
November 30, 1997
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
The Behavior and Effects of the Noble Metals in the DWPF Melter System
Governments worldwide have committed to stabilization of high-level nuclear waste (HLW) by vitrification to a durable glass form for permanent disposal. All of these nuclear wastes contain the fission-product noble metals: ruthenium, rhodium, and palladium. SRS wastes also contain natural silver from iodine scrubbers. Closely associated with the noble metals are the fission products selenium and tellurium which are chemical analogs of sulfur and which combine with noble metals to influence their behavior and properties. Experience has shown that these melt insoluble metals and their compounds tend to settle to the floor of Joule-heated ceramic melters. In fact, almost all of the major research and production facilities have experienced some operational problem which can be associated with the presence of dense accumulations of these relatively conductive metals and/or their compounds. In most cases, these deposits have led to a loss of production capability, in some cases, to the point that melter operation could not continue. HLW nuclear waste vitrification facilities in the United States are the Department of Energy`s Defense Waste Processing Facility (DWPF) at the Savannah River Site, the planned Hanford Waste Vitrification Plant (HWVP) at the Hanford Site and the operating West Valley Demonstration Project (WVDP) at West …
Date:
November 30, 1997
Creator:
Smith, M. E. & Bickford, D. F.
Object Type:
Report
System:
The UNT Digital Library
Chickasha Daily Express (Chickasha, Okla.), Ed. 1 Sunday, November 30, 1997
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 30, 1997
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History