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15th Street News (Midwest City, Okla.), Vol. 29, No. 7, Ed. 1 Friday, October 22, 1999
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 22, 1999
Creator:
Ming, Holly
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Aggregation of dialkyl-substituted diphosphonic acids and its effect on metal ion extraction.
Solvent extraction reagents containing the diphosphonic acid group exhibit an extraordinary affinity for tri-, tetra- and hexavalent actinides. Their use has been considered for actinide separation and pre-concentration procedures. Solvent extraction data obtained with P,P{prime}-di(2-ethylhexyl) methane-, ethane- and butanediphosphonic acids exhibit features that are difficult to explain without Knowledge of the aggregation state of the extractants. Information about the aggregation of the dialkyl-substituted diphosphonic acids in aromatic diluents has been obtained using the complementary techniques of vapor pressure osmometry (VPO), small angle neutron scattering (SANS), infrared spectroscopy and molecular mechanics. The results from these techniques provide an understanding of the aggregation behavior of these extractants that is fully compatible with the solvent extraction data. The most important results and their relevance to solvent extraction are reviewed in this paper.
Date:
October 22, 1999
Creator:
Chiarizia, R.; Barrans, R. E., Jr.; Ferraro, J. R. Herlinger, A. W. & McAlister, D. R.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 100, No. 184, Ed. 1 Friday, October 22, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 22, 1999
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The APS control system network upgrade.
When it was installed,the Advanced Photon Source (APS) control system network was at the state-of-the-art. Different aspects of the system have been reported at previous meetings [1,2]. As loads on the controls network have increased due to newer and faster workstations and front-end computers, we have found performance of the system declining and have implemented an upgraded network. There have been dramatic advances in networking hardware in the last several years. The upgraded APS controls network replaces the original FDDI backbone and shared Ethernet hubs with redundant gigabit uplinks and fully switched 10/100 Ethernet switches with backplane fabrics in excess of 20 Gbits/s (Gbps). The central collapsed backbone FDDI concentrator has been replaced with a Gigabit Ethernet switch with greater than 30 Gbps backplane fabric. Full redundancy of the system has been maintained. This paper will discuss this upgrade and include performance data and performance comparisons with the original network.
Date:
October 22, 1999
Creator:
Sidorowicz, K. v.; Leibfritz, D. & McDowell, W. P.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 306, Ed. 1 Friday, October 22, 1999
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
October 22, 1999
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 94, No. 85, Ed. 1 Friday, October 22, 1999
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
October 22, 1999
Creator:
Keasling, Edna & Fierro, Jennifer
Object Type:
Newspaper
System:
The Portal to Texas History
The Brand (Abilene, Tex.), Vol. 87, No. 6, Ed. 1, Friday, October 22, 1999
Weekly student newspaper from Hardin-Simmons University in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
October 22, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 104, No. 85, Ed. 1 Friday, October 22, 1999
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
October 22, 1999
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
[Clipping: "Face to face: Falwell meeting with gay Christian activists may be milestone", Dallas Morning News]
Newspaper clipping from the Dallas Morning News, by Leonard Pitts of the Miami Herald, dated Friday, October 22, 1999. The article discusses a meeting between a group of "200 socially conservative Christians" led by the Rev. Jerry Falwell, and "an equal number of gay, lesbian, bisexual and transgender people of faith, led by the Rev. Mel White, a gay clergyman." The article includes a cartoon depicting a group of people sitting at a table, engaged in conversation, with speech bubbles coming from their mouths.
Date:
October 22, 1999
Creator:
Pitts, Leonard & Scott, Margaret
Object Type:
Clipping
System:
The UNT Digital Library
[Clipping: Whole Lotta Livin' to Do: Mary Franklin Talks about Surviving Breast Cancer]
1 newspaper sheet featuring the story "Whole Lotta Livin' to Do: Mary Franklin Talks about Surviving Breast Cancer" in the Texas Triangle, October, 22, 1999. Newspaper sheet has multiple creases and on the right side of the front cover has tears. The front side of the newspaper sheet features the article and the back side features the pet page and advertisements.
Date:
October 22, 1999
Creator:
Ford, Nancy
Object Type:
Clipping
System:
The UNT Digital Library
Coarsening in Multicomponent Multiphase Systems [Final Report, November 1, 1995--October 31, 1998]
The goal of the project was to extend the theory of particle coarsening, which is well established for binary systems, to the case of multicomponent and multiphase alloys. The theoretical approach involved three stages: (1) a mean field description based on the Lifshitz-Slyozov-Wagner (LSW) [1,2] formulation (recently published in Acta Mater. [3]), (2) an analytical description of coarsening valid at small volume fractions where the Marqusee and Ross [4] model was employed and (3) a numerical simulation of three phase coarsening where the boundary integral method of Akaiwa and Voorhees [5] was implemented. The main result of the mean field analysis can be stated as follows. The growth rate of a particle from a particular phase in a multiphase system is precisely the same as that derived for a single phase, multicomponent system. Also, it was found that the scaled particle size distribution for each phase in the system has exactly the same form as that originally derived by LSW. Since it neglects particle interactions, the mean field theory is clearly unrealistic and as such the formulation of coarsening in low volume fraction multiphase systems was undertaken.
Date:
October 22, 1999
Creator:
Hoyt, J.J.
Object Type:
Report
System:
The UNT Digital Library
A Combined Statistical-Microstructural Model for Simulation of Sintering
Sintering theory has been developed either as the application of complex diffusion mechanisms to a simple geometry or as the deformation and shrinkage of a continuum body. They present a model that can treat in detail both the evolution of microstructure and the sintering mechanisms, on the mesoscale, so that constitutive equations with detail microstructural information can be generated. The model is capable of simulating vacancy diffusion by grain boundary diffusion, annihilation of vacancies at grain boundaries resulting in densification, and coarsening of the microstructural features. In this paper, they review the stereological theory of sintering and its application to microstructural evolution and the diffusion mechanism, which lead to sintering. They then demonstrate how these stereological concepts and diffusion mechanisms were incorporated into a kinetic Monte Carlo model to simulate sintering. Finally, they discuss the limitations of this model.
Date:
October 22, 1999
Creator:
BRAGINSKY,MICHAEL V.; DEHOFF,ROBERT T.; OLEVSKY,EUGENE A. & TIKARE,VEENA
Object Type:
Article
System:
The UNT Digital Library
Dallas Voice (Dallas, Tex.), Vol. 16, No. 25, Ed. 1 Friday, October 22, 1999
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:
October 22, 1999
Creator:
Vercher, Dennis
Object Type:
Newspaper
System:
The UNT Digital Library
Deposition and Characterization of Highly Oriented Mg(3)(VO(4))(2) Thin Film Catalyst
Magnesium vanadates are potentially important catalytic materials for the conversion of alkanes to alkenes via oxidative dehydrogenation. However, little is known about the active sites at which the catalytic reactions take place. It may be possible to obtain a significant increase in the catalytic efficiency if the effects of certain material properties on the surface reactions could be quantified and optimized through the use of appropriate preparation techniques. Given that surface reactivity is often dependent upon surface structure and that the atomic level structure of the active sites in these catalysts is virtually unknown, we desire thin film samples consisting of a single magnesium vanadate phase and a well defined crystallographic orientation in order to reduce complexity and simplify the study of active sites. We report on the use of reactive RF sputter deposition to fabricate very highly oriented, stoichiometric Mg{sub 3}(VO{sub 4}){sub 2} thin films for use in these surface analysis studies. Deposition of samples onto amorphous substrates resulted in very poor crystallinity. However, deposition of Mg{sub 3}(VO{sub 4}){sub 2} onto well-oriented, lattice-matched thin film ''seed'' layers such as Ti(0001), Au(111), or Pt(111) resulted in very strong preferential (042) crystallographic orientation (pseudo-hexagonal oxygen planes parallel to the substrate). This …
Date:
October 22, 1999
Creator:
Rodriguez, Mark A.; Ruffner, Judith A.; Sault, Allen G. & Tissot, Ralph G., Jr.
Object Type:
Article
System:
The UNT Digital Library
Development of wear-resistant coatings for cobalt-base alloys
The level of nuclear plant radiation exposure due to activated cobalt wear debris could potentially be reduced by covering the cobalt-base materials with a wear resistant coating. Laboratory pin-on-disc and rolling contact wear tests were used to evaluate the wear performance of several coatings. Based on the results of these tests, multilayer Cr-nitride coatings and ion nitriding are the most promising approaches.
Date:
October 22, 1999
Creator:
Cockeram, B.V.
Object Type:
Article
System:
The UNT Digital Library
Energy Efficiency Campaign for Residential Housing at the Fort Lewis Army Installation
Energy Efficiency Campaign for Residential Housing at the Fort Lewis Army Installation
Date:
October 22, 1999
Creator:
McMakin, Andrea H.; Lundgren, Regina E. & Malone, Elizabeth L.
Object Type:
Report
System:
The UNT Digital Library
Environmental Protection Agency: FY2000 Budget Issues
State and local wastewater and drinking water capital needs were the most prominent budgetary issues. Senate and House authorizing and appropriating chairmen expressed concern over the requested 17% decrease in the State and Tribal Assistance Grants account from $3.41 billion in FY1999 to $2.84 billion in FY2000. The conference agreement on H.R. 2684 provides a total of $3.47 billion. For clean water state revolving funds, the conference committee approved the Senate's level of $1.35 billion, about $175 million more than the House approved and roughly $550 million more than requested. The conference agreement included $332 million for special project grants, about $73 million more than the House's proposal, roughly $232 million more than the Senate approved, and about $304 million more than requested. For drinking water state revolving funds, the conference committee approved $820 million, $45 million more than the House's amount and $5 million less than the Senate approved and the President requested. The conference committee also approved the Administration's request of $885 million for state and tribal administrative grants, which is roughly the same as the amount enacted for FY1999.
Date:
October 22, 1999
Creator:
Lee, Martin R.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of oxide dispersion strengthened (ODS) molybdenum and molybdenum-rhenium Alloys
Oxide dispersion strengthened (ODS) molybdenum alloys being developed for high temperature applications possess excellent high temperature strength and creep resistance. In addition they exhibit a ductile-to-brittle transition temperature (DBIT) in the worked and stress-relieved condition under longitudinal tensile load well below room temperature. However, in the recrystallized condition, the DBTT maybe near or above room temperature, depending on the volume fraction of oxide dispersion and the amount of prior work. Dilute rhenium additions (7 and 14 wt.%) to ODS molybdenum were evaluated to determine their effect on low temperature ductility. The addition of 7 wt.% rhenium to the ODS molybdenum did not significantly enhance the mechanical properties. However, the addition of 14 wt.% rhenium to the ODS molybdenum resulted in a DBTT well below room temperature in both the stress-relieved and recrystallized condition. Additionally, the tensile strength of ODS Mo-14Re is greater than the base ODS molybdenum at 1,000 to 1,250 C.
Date:
October 22, 1999
Creator:
Mueller, A.J.; Bianco, R. & Buckman, R.W. Jr.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Friday, October 22, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 22, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Extending Molecular Theory to Steady-State Diffusing Systems
Predicting the properties of nonequilibrium systems from molecular simulations is a growing area of interest. One important class of problems involves steady state diffusion. To study these cases, a grand canonical molecular dynamics approach has been developed by Heffelfinger and van Swol [J. Chem. Phys., 101, 5274 (1994)]. With this method, the flux of particles, the chemical potential gradients, and density gradients can all be measured in the simulation. In this paper, we present a complementary approach that couples a nonlocal density functional theory (DFT) with a transport equation describing steady-state flux of the particles. We compare transport-DFT predictions to GCMD results for a variety of ideal (color diffusion), and nonideal (uphill diffusion and convective transport) systems. In all cases excellent agreement between transport-DFT and GCMD calculations is obtained with diffusion coefficients that are invariant with respect to density and external fields.
Date:
October 22, 1999
Creator:
FRINK,LAURA J. D.; SALINGER,ANDREW G. & THOMPSON,AIDAN P.
Object Type:
Article
System:
The UNT Digital Library
Field-Induced Rheology in Uniaxial and Biaxial Fields
Steady and oscillatory shear 3-D simulations of electro- and magnetorheology in uniaxial and biaxial fields are presented, and compared to the predictions of the chain model. These large scale simulations are three dimensional, and include the effect of Brownian motion. In the absence of thermal fluctuations, the expected shear thinning viscosity is observed in steady shear, and a striped phase is seen to rapidly form in a uniaxial field, with a shear slip zone in each sheet. However, as the influence of Brownian motion increases, the fluid stress decreases, especially at lower Mason numbers, and the striped phase eventually disappears, even when the fluid stress is still high. In a biaxial field, an opposite trend is seen, where Brownian motion decreases the stress most significantly at higher Mason numbers. to account for the uniaxial steady shear data they propose a microscopic chain model of the role played by thermal fluctuations on the rheology of ER and MR fluids that delineates the regimes where an applied field can impact the fluid viscosity, and gives an analytical prediction for the thermal effect. In oscillatory shear, a striped phase again appears in uniaxial field, at strain amplitudes greater than {approx} 0.15, and the …
Date:
October 22, 1999
Creator:
MARTIN, JAMES E.
Object Type:
Article
System:
The UNT Digital Library
[Funeral Program for Augusta Musgrove Brown, October 22, 1999]
Funeral program for Mrs. Augusta Musgrove Brown, born May 24, 1910. The funeral was held Friday, October 22, 1999 at Emmanuel African Methodist Episcopal Church, officiated by Rev. I. V. Tolbert, Pastor. Funeral arrangements were made through Lewis Funeral Home and she was buried in Fort Sam Houston National Cemetery near San Antonio, Texas.
Date:
October 22, 1999
Creator:
unknown
Object Type:
Pamphlet
System:
The Portal to Texas History
High Resolution, High-Speed Photography, an Increasingly Prominent Diagnostic in Ballistic Research Experiments
High resolution, high-speed photography is becoming a prominent diagnostic in ballistic experimentation. The development of high speed cameras utilizing electro-optics and the use of lasers for illumination now provide the capability to routinely obtain high quality photographic records of ballistic style experiments. The purpose of this presentation is to review in a visual manner the progress of this technology and how it has impacted ballistic experimentation. Within the framework of development at LLNL, we look at the recent history of large format high-speed photography, and present a number of photographic records that represent the state of the art at the time they were made. These records are primarily from experiments involving shaped charges. We also present some examples of current photographic technology, developed within the ballistic community, that has application to hydro diagnostic experimentation at large. This paper is designed primarily as an oral-visual presentation. This written portion is to provide general background, a few examples, and a bibliography.
Date:
October 22, 1999
Creator:
Shaw, L. & Muelder, S.
Object Type:
Article
System:
The UNT Digital Library
Homecoming '99: Flight of the Century
Supplement to the North Texas Daily, a student newspaper from the University of North Texas in Denton, Texas. Homecoming 1999 features information on homecoming activities and traditions at the University of North Texas.
Date:
October 22, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History