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Silo 3 Waste Treatment Phase I Physical Testing Final Report
A characterization study of the Fernald Silo 3 waste was performed at the request of Rocky Mountain Remedial Services, LLC (RMRS) to support treatment of the waste with the Envirobond reagents and Envirobrick process. The Savannah River Technology Center (SRTC) performed the characterization under a Work for Others Agreement WOF-00-007. Physical property testing was subcontracted to the Clemson Environmental Technologies Laboratory (CETL). This report is intended to transmit the results of the physical property testing conducted at the CETL. Results of the physical property testing are summarized in a final report from Steve Hoeffner, CETL.
Date:
March 13, 2001
Creator:
Langton, C. A.
Object Type:
Report
System:
The UNT Digital Library
SINGLE CRYSTAL NEUTRON DIFFRACTION.
Single-crystal neutron diffraction measures the elastic Bragg reflection intensities from crystals of a material, the structure of which is the subject of investigation. A single crystal is placed in a beam of neutrons produced at a nuclear reactor or at a proton accelerator-based spallation source. Single-crystal diffraction measurements are commonly made at thermal neutron beam energies, which correspond to neutron wavelengths in the neighborhood of 1 Angstrom. For high-resolution studies requiring shorter wavelengths (ca. 0.3-0.8 Angstroms), a pulsed spallation source or a high-temperature moderator (a ''hot source'') at a reactor may be used. When complex structures with large unit-cell repeats are under investigation, as is the case in structural biology, a cryogenic-temperature moderator (a ''cold source'') may be employed to obtain longer neutron wavelengths (ca. 4-10 Angstroms). A single-crystal neutron diffraction analysis will determine the crystal structure of the material, typically including its unit cell and space group, the positions of the atomic nuclei and their mean-square displacements, and relevant site occupancies. Because the neutron possesses a magnetic moment, the magnetic structure of the material can be determined as well, from the magnetic contribution to the Bragg intensities. This latter aspect falls beyond the scope of the present unit; for …
Date:
March 13, 2001
Creator:
Koetzle, T. F.
Object Type:
Book
System:
The UNT Digital Library
SINGLE CRYSTAL NEUTRON DIFFRACTION.
Single-crystal neutron diffraction measures the elastic Bragg reflection intensities from crystals of a material, the structure of which is the subject of investigation. A single crystal is placed in a beam of neutrons produced at a nuclear reactor or at a proton accelerator-based spallation source. Single-crystal diffraction measurements are commonly made at thermal neutron beam energies, which correspond to neutron wavelengths in the neighborhood of 1 Angstrom. For high-resolution studies requiring shorter wavelengths (ca. 0.3-0.8 Angstroms), a pulsed spallation source or a high-temperature moderator (a ''hot source'') at a reactor may be used. When complex structures with large unit-cell repeats are under investigation, as is the case in structural biology, a cryogenic-temperature moderator (a ''cold source'') may be employed to obtain longer neutron wavelengths (ca. 4-10 Angstroms). A single-crystal neutron diffraction analysis will determine the crystal structure of the material, typically including its unit cell and space group, the positions of the atomic nuclei and their mean-square displacements, and relevant site occupancies. Because the neutron possesses a magnetic moment, the magnetic structure of the material can be determined as well, from the magnetic contribution to the Bragg intensities. This latter aspect falls beyond the scope of the present unit; for …
Date:
March 13, 2001
Creator:
Koetzle, T. F.
Object Type:
Book
System:
The UNT Digital Library
Soil Vapor Extraction Testing of Selected Wells in the Northern Sector of A-Area
The purpose of this testing was to determine if a vadose zone source for the contamination remains and to begin collecting data to assist with determining the location of any significant source.
Date:
March 13, 2001
Creator:
Dixon, K.L.
Object Type:
Report
System:
The UNT Digital Library
Turkey: Financial Crises in Context
None
Date:
March 13, 2001
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Welfare Reform Research: What Do We Know About Those Who Leave Welfare?
Cash welfare caseloads have declined 57% since peaking in 1994 at 5.1 million cases, with the largest declines occurring since the passage of the Personal Responsibility and Work Opportunity Reconciliation Act of 1996 (PRWORA). PRWORA ended the entitlement program of Aid to Families with Dependent Children (AFDC), and replaced it with a block grant program to the states, the Temporary Assistance for Needy Families (TANF) program. Unlike AFDC, under TANF most adults are required to work as a condition of receiving benefits, and assistance from federal funds is time-limited.
Date:
March 13, 2001
Creator:
Devere, Christine
Object Type:
Report
System:
The UNT Digital Library
Work Opportunity Tax Credit: Employers Do Not Appear to Dismiss Employees to Increase Tax Credits
A letter report issued by the General Accounting Office with an abstract that begins "In 1997, 4,369 corporations earned a total of $135 million in Work Opportunity Tax Credits (WOTC). The employers who earned most of the credit were large companies with gross receipts exceeding $1 billion and engaged in nonfinancial services and retail trade. GAO's analysis of state agency data for California and Texas from 1997 through 1999 showed that three percent of participating employers accounted for 82 percent of all hires of WOTC-certified workers. Many employers who participated in the tax credit program in those two states in 1999 say that, besides the opportunity to obtain the credit, their participation in the program was also greatly influenced by such factors as the need to address a labor shortage and the opportunity to be a good corporate citizen. The results of GAO's two state analysis indicate a low probability of replacing employees who were not eligible for the tax credit."
Date:
March 13, 2001
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 30, No. 23, Ed. 1 Friday, April 13, 2001
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 13, 2001
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 26, Ed. 1 Friday, April 13, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 13, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baytown Sun (Baytown, Tex.), Vol. 79, No. 138, Ed. 1 Friday, April 13, 2001
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
April 13, 2001
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 96, No. 30, Ed. 1 Friday, April 13, 2001
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
April 13, 2001
Creator:
Keasling, Edna & Pritchett, Melissa
Object Type:
Newspaper
System:
The Portal to Texas History
Brady Standard-Herald and Heart O' Texas News (Brady, Tex.), Ed. 1 Friday, April 13, 2001
Semiweekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
April 13, 2001
Creator:
Stewart, James E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 106, No. 30, Ed. 1 Friday, April 13, 2001
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
April 13, 2001
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Concurrent Multiscale Modeling of Embedded Nanomechanics
We discuss concurrent multiscale simulations of dynamic and temperature-dependent processes found in nanomechanical systems coupled to larger scale surroundings. We focus on the behavior of sub-micron Micro-Electro-Mechanical Systems (MEMS), especially micro-resonators. The coupling of length scales methodology we have developed for MEMS employs an atomistic description of small but key regions of the system, consisting of millions of atoms, coupled concurrently to a finite element model of the periphery. The result is a model that accurately describes the behavior of the mechanical components of MEMS down to the atomic scale. This paper reviews some of the general issues involved in concurrent multiscale simulation, extends the methodology to metallic systems and describes how it has been used to identify atomistic effects in sub-micron resonators.
Date:
April 13, 2001
Creator:
Rudd, R E
Object Type:
Article
System:
The UNT Digital Library
Daily Journal (Perry, Okla.), Vol. 108, No. 74, Ed. 1 Friday, April 13, 2001
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 13, 2001
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Dallas Voice (Dallas, Tex.), Vol. 17, No. 50, Ed. 1 Friday, April 13, 2001
Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date:
April 13, 2001
Creator:
Vercher, Dennis
Object Type:
Newspaper
System:
The UNT Digital Library
Evaluations of the 253U/238U Isotope Ratio through Thick-Walled Containers using the 185.7 keV and 1001.0 keV Gamma Rays
The non-destructive determination of isotope ratios (NDA) present in plutonium- and uranium-bearing materials is best accomplished with a MultiGroup Analysis methodology on spectral data obtained with high-resolution germanium detector systems. This methodology is currently employed in codes such as MGA, MGAU or U235. The MGA code, for example, works well on Pu samples and employs a number of isolated spectral lines in the analysis. The algorithm uses Gaussian and Lorentzian peak shapes that are empirically modified to account for various physical and instrumental effects. Additional effects due to external absorbers, sample self-attenuation and detector relative efficiency are also included. Uranium samples are analyzed with MGAU and U235 using a simpler but similar algorithm in the narrow energy range between 85- and 100-keV. Although the details can be complex, the problem described above is ultimately reduced to evaluating a simple ratio. Applied to uranium, for example, one evaluates where the subscripts A and B refer to quantities associated with {sup 235}U and {sup 238}U, respectively. Specifically, N{sub 235U}/N{sub 238U} is the isotope ratio {sup 235}U/{sup 238}U, I is the measured gamma-ray peak intensity, and E is the counting efficiency, BR is the appropriate branching ratio, t is the appropriate half-life, {alpha}{sup …
Date:
April 13, 2001
Creator:
Lanier, R G; Hayden, C F; Clark, D & Parker, W E
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Friday, April 13, 2001
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 13, 2001
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Grandview Tribune (Grandview, Tex.), Vol. 106, No. 34, Ed. 1 Friday, April 13, 2001
Weekly newspaper from Grandview, Texas that includes local, state, and national news along with advertising.
Date:
April 13, 2001
Creator:
Bosher, Casey & Marten, Donna K.
Object Type:
Newspaper
System:
The Portal to Texas History
The Hopkins County Echo (Sulphur Springs, Tex.), Vol. 206, No. 14, Ed. 1 Friday, April 13, 2001
Weekly newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.
Date:
April 13, 2001
Creator:
Keys, Scott & Alsobrook, Bruce
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 44, No. 28, Ed. 1 Friday, April 13, 2001
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
April 13, 2001
Creator:
Lynch, Mary Louise
Object Type:
Newspaper
System:
The Portal to Texas History
Human Capital: The Role of the Ombudsmen in Dispute Resolution
A letter report issued by the General Accounting Office with an abstract that begins "Federal agencies have created ombudsmen offices to expedite the resolution of employees' complaints about workplace issues. An ombudsman provides an informal alternative to more formal administrative processes in the workplace, using various techniques and often working "outside the box" to deal with conflicts and other organizational disputes. GAO found that the number of ombudsman offices handling workplace issues in federal agencies is small but is expected to grow. These offices deal with a wide range of workplace issues, from helping employees get answers to questions about agency policies and cutting through "red tape" to more serious situations, such as allegations about employment discrimination. In studying the ombudsmen offices at the National Institutes of Health (NIH), the International Broadcasting Bureau (IBB), and the U.S. Secret Service, GAO found some common approaches as well as some differences in their operations. Common to all three offices was their broad responsibility and authority to deal with almost any workplace issue, their ability to bring systemic issues to management's attention, and the way in which they worked with other agency offices in providing assistance to employees. But how they were structured …
Date:
April 13, 2001
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
[Lally Family Videos, No. 11 - Lauren goes Swimming]
This home movie excerpt documents baby Lauren Lindsey in a swimming pool.
Date:
April 13, 2001
Creator:
Lally
Object Type:
Video
System:
The Portal to Texas History
Methods and Techniques Used to Convey Total System Performance Assessment Analyses and Results for Site Recommendation at Yucca Mountain, Nevada, USA
Total System Performance Assessment (TSPA) is used as a key decision-making tool for the potential geologic repository for high level radioactive waste at Yucca Mountain, Nevada, USA. Because of the complexity and uncertainty involved in a post-closure performance assessment, an important goal is to produce a transparent document describing the assumptions, the intermediate steps, the results, and the conclusions of the analyses. An important objective for a TSPA analysis is to illustrate confidence in performance projections of the potential repository given a complex system of interconnected process models, data, and abstractions. The methods and techniques used for the recent TSPA analyses demonstrate an effective process to portray complex models and results with transparency and credibility.
Date:
April 13, 2001
Creator:
Mattie, P. D.; McNeish, J. A.; Sevougian, D. S. & Andrews, R. W.
Object Type:
Report
System:
The UNT Digital Library