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Testing Miller Wavelength Scaling of the Second-Order Nonlinear Coefficients of KNbO{sub 3}, KTiOPO{sub 4}, KTiOAsO{sub 4}, LiNbO{sub 3}, LiIO{sub 3}, B-BaB{sub 2}O{sub 4}, KH{sub 2}OP{sub 4}, and LiB{sub 3}O{sub 5}
None
Date:
October 20, 2000
Creator:
ALFORD,WILLIAM J. & SMITH,ARLEE V.
Object Type:
Article
System:
The UNT Digital Library
Neutronic Benchmarks for the Utilization of Mixed-Oxide Fuel: Joint U.S./Russian Progress Report for Fiscal Year 1997 - Volume 4, Part 2--Saxton Plutonium Program Critical Experiments
Critical experiments with water-moderated, single-region PuO{sub 2}-UO{sub 2} or UO{sub 2}, and multiple-region PuO{sub 2}-UO{sub 2}- and UO{sub 2}-fueled cores were performed at the CRX reactor critical facility at the Westinghouse Reactor Evaluation Center (WREC) at Waltz Mill, Pennsylvania in 1965 [1]. These critical experiments were part of the Saxton Plutonium Program. The mixed oxide (MOX) fuel used in these critical experiments and then loaded in the Saxton reactor contained 6.6 wt% PuO{sub 2} in a mixture of PuO{sub 2} and natural UO{sub 2}. The Pu metal had the following isotopic mass percentages: 90.50% {sup 239}Pu; 8.57% {sup 239}Pu; 0.89% {sup 240}Pu; and 0.04% {sup 241}Pu. The purpose of these critical experiments was to verify the nuclear design of Saxton partial plutonium cores while obtaining parameters of fundamental significance such as buckling, control rod worth, soluble poison worth, flux, power peaking, relative pin power, and power sharing factors of MOX and UO{sub 2} lattices. For comparison purposes, the core was also loaded with uranium dioxide fuel rods only. This series is covered by experiments beginning with the designation SX.
Date:
October 12, 2000
Creator:
Abdurrahman, NM
Object Type:
Report
System:
The UNT Digital Library
NEW PARADIGM IN SEPARATIONS: MOLECULAR RECOGNITION MEMBRANES
None
Date:
October 1, 2000
Creator:
Abney, K.D. & Barr, M.E.
Object Type:
Article
System:
The UNT Digital Library
EARLY ENTRANCE COPRODUCTION PLANT
The overall objective of this project is the three phase development of an Early Entrance Coproduction Plant (EECP) which produces at least one product from at least two of the following three categories: (1) electric power (or heat), (2) fuels, and (3) chemicals. The objective is to have these products produced by technologies capable of using synthesis gas derived from coal and/or other carbonaceous feedstock. The objective of Phase I is to determine the feasibility and define the concept for the EECP located at a specific site and to develop a Research, Development, and Testing Plan (RD and T) for implementation in Phase II. The objective of Phase II is to implement the RD and T as outlined in the Phase I RD and T Plan to enhance the development and commercial acceptance of coproduction technology that produces high-value products, particularly those that are critical to our domestic fuel and power requirements. The project will resolve critical knowledge and technology gaps on the integration of gasification and downstream processing to coproduce some combination of power, fuels, and chemicals from coal and other feedstocks. The objective of Phase III is to develop an engineering design package and a financing plan for …
Date:
October 26, 2000
Creator:
Abughazaleh, John S.; Ahmed, Mushtaq; Anand, Ashok; Anderson, John H.; Benham, Charles; Brent, Fred D. et al.
Object Type:
Report
System:
The UNT Digital Library
Micromilling of Metal Alloys with Focused Ion Beam-Fabricated Tools
None
Date:
October 3, 2000
Creator:
Adams, D.P.; Vasile, M.J.; Benavides, G.L. & Campbell, A.N.
Object Type:
Article
System:
The UNT Digital Library
Quarterly Progress Report - Biological Monitoring Program for East Fork Poplar Creek
In May 1985, a National Pollutant Discharge Elimination System (NPDES) permit was issued for the Oak Ridge Y-12 Plant. As a condition of the permit, a Biological Monitoring and Abatement Program (BMAP) was developed to demonstrate that the effluent limitations established for the Y-12 Plant protect the classified uses of the receiving stream (East Fork Poplar Creek; EFPC), in particular, the growth and propagation of aquatic life (Loar et al. 1989). A second objective of the BMAP is to document the ecological effects resulting from the implementation of a water pollution control program designed to eliminate direct discharges of wastewaters to EFPC and to minimize the inadvertent release of pollutants to the environment. Because of the complex nature of the discharges to EFPC and the temporal and spatial variability in the composition of the discharges, a comprehensive, integrated approach to biological monitoring was developed. A new permit was issued to the Y-12 Plant on April 28, 1995 and became effective on July 1, 1995. Biological monitoring continues to be required under the new permit. The BMAP consists of four major tasks that reflect different but complementary approaches to evaluating the effects of the Y-12 Plant discharges on the aquatic integrity …
Date:
October 18, 2000
Creator:
Adams, S. M.; Christensen, S. W.; Greeley, M. S. Jr; Hill, W. R.; McCarthy, J. F.; Peterson, M. J. et al.
Object Type:
Report
System:
The UNT Digital Library
MAXIMA-1: A Measurement of the Cosmic Microwave Background Anisotropy on Angular Scales of 10' to 5 Degrees
We present a map and an angular power spectrum of the anisotropy of the cosmic microwave background (CMB) from the first flight of MAXIMA. MAXIMA is a balloon-borne experiment with an array of 16 bolometric photometers operated at 100 mK. MAXIMA observed a 124 deg region of the sky with 10' resolution at frequencies of 150, 240 and 410 GHz. The data were calibrated using in-flight measurements of the CMB dipole anisotropy. A map of the CMB anisotropy was produced from three 150 and one 240 GHz photometer without need for foreground subtractions. Analysis of this CMB map yields a power spectrum for the CMB anisotropy over the range 36 {le} {ell} {le} 785. The spectrum shows a peak with an amplitude of 78 {+-} 6 {mu}K at {ell} {approx_equal} 220 and an amplitude varying between {approx} 40 {mu}K and {approx} 50 {mu}K for 400 {approx}< {ell} {approx}< 785.
Date:
October 2, 2000
Creator:
Ade, P.; Balbi, A.; Bock, J.; Borrill, J.; Boscaleri, A.; deBernardis, P. et al.
Object Type:
Article
System:
The UNT Digital Library
InGaP/GaAs/Ge Multi-Junction Solar Cell Efficiency Improvements Using Epitaxial Germanium
None
Date:
October 17, 2000
Creator:
Aiken, Daniel James
Object Type:
Article
System:
The UNT Digital Library
Probing Dissolution Surface Structure in Phosphate Glasses Using 1H-31 Cross-Polarization Edited Radio Frequency Dipolar Recoupling Experiments
None
Date:
October 2, 2000
Creator:
Alam, T.M. & Lang, D.P.
Object Type:
Article
System:
The UNT Digital Library
The effect of bulk composition on swelling and radiation-induced segregation in austenitic alloys.
None
Date:
October 10, 2000
Creator:
Allen, T. R.; Cole, J. I.; Dietz, N. L.; Wang, Y.; Was, G. S. & Kenik, E. A.
Object Type:
Article
System:
The UNT Digital Library
Research Needs for Coatings on Glass
None
Date:
October 29, 2000
Creator:
Allendorf, Mark d.
Object Type:
Article
System:
The UNT Digital Library
Southwest Retort, Volume 53, Number 2, October 2000
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
October 2000
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
The Newsletter of the Texas Chapter of the American Fisheries Society, Volume 26, Number 3, Fall 2000
Newsletter of the Texas Chapter of the American Fisheries Society containing information about the organization, membership, and field of aquaculture and ecosystem management.
Date:
October 2000
Creator:
American Fisheries Society. Texas Chapter.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Chopping effect observed at cathodic arc initiation
This article is about the Chopping effect observed at cathodic arc initiation. It is argued that current chopping at the rising edge is similar to the current chopping effect that is well-known for the arc current approaching current-zero.
Date:
October 1, 2000
Creator:
Anders, Andre
Object Type:
Article
System:
The UNT Digital Library
System Configuration Management Implementation Procedure for the Cold Vacuum Drying Facility Monitoring and Control System
The purpose of this document is to establish the System Configuration Management Implementation Procedure (SCMIP) for the Cold Vacuum Drying Facility (CVDF) Monitoring and Control System (MCS). This procedure provides configuration management for the process control system. The process control system consists of equipment hardware and software that controls and monitors the instrumentation and equipment associated with the CVDF processes. Refer to SNF-3090, Cold Vacuum Drying Facility Monitoring and Control System Design Description, HNF-3553, Annex B, Safety Analysis Report for the Cold Vacuum Drying Facility, and AP-CM-6-037-00, SNF Project Process Automation Software and Equipment Configuration. This SCMIP identifies and defines the system configuration items in the control system, provides configuration control throughout the system life cycle, provides configuration status accounting, physical protection and control, and verifies the completeness and correctness of these items.
Date:
October 11, 2000
Creator:
Anglesey, M. O.
Object Type:
Report
System:
The UNT Digital Library
An Innovative Reactor Analysis Methodology Based on a Quasidiffusion Nodal Core Model. Nuclear Energy Research Initiative (NERI) Program. Quarterly Technical Progress Report, July 1 - September 30, 2000
Status Summary of Nuclear Energy Research Initiative (NERI) Tasks: Task 1--The development of the following methods in ID slab geometry: (1) Homogenization and definition of discontinuity factors, (2) Group constants functionalization using assembly transport solution of multigroup eigenvalue problem with albedo boundary conditions, and (3) Solving coarse-mesh effective few-group 1D QD moment equations using tables of data parametrized with respect to the ratio {rvec n} {center_dot} {rvec {tilde J}{sup G}}/{tilde {phi}{sup G}} on boundaries. Task 2--Development of a numerical method for solving the 2D few-group moment QD equations: (1) Development of a nodal discretization method for 2D moment QD equations, and (2) Development of an efficient iteration method for solving the system of equations of the nodal discretization method for 2D moment QD equations. Task 3--The development of the following methods in 2D X-Y geometry: (1) homogenization and definition of discontinuity factors, (2) group constants functionalization using assembly transport solution of multigroup eigenvalue problem with albedo boundary conditions, and (3) solving coarse-mesh effective few-group QD moment equations using tables of data parametrized with respect to the ratio {rvec n} {center_dot} {rvec {tilde J}{sup G}}/{tilde {phi}{sup G}} on boundaries. Task 4--Development of a numerical method for solving the few-group moment QD …
Date:
2000-10~
Creator:
Anistratov, Dmitriy Y.; Adams, Marvin L.; Palmer, Todd S. & Smith, Kord S.
Object Type:
Report
System:
The UNT Digital Library
CO-FIRING COAL: FEEDLOT AND LITTER BIOMASS FUELS
The following are proposed activities for quarter 1 (6/15/00-9/14/00): (1) Finalize the allocation of funds within TAMU to co-principal investigators and the final task lists; (2) Acquire 3 D computer code for coal combustion and modify for cofiring Coal:Feedlot biomass and Coal:Litter biomass fuels; (3) Develop a simple one dimensional model for fixed bed gasifier cofired with coal:biomass fuels; and (4) Prepare the boiler burner for reburn tests with feedlot biomass fuels. The following were achieved During Quarter 5 (6/15/00-9/14/00): (1) Funds are being allocated to co-principal investigators; task list from Prof. Mukhtar has been received (Appendix A); (2) Order has been placed to acquire Pulverized Coal gasification and Combustion 3 D (PCGC-3) computer code for coal combustion and modify for cofiring Coal: Feedlot biomass and Coal: Litter biomass fuels. Reason for selecting this code is the availability of source code for modification to include biomass fuels; (3) A simplified one-dimensional model has been developed; however convergence had not yet been achieved; and (4) The length of the boiler burner has been increased to increase the residence time. A premixed propane burner has been installed to simulate coal combustion gases. First coal, as a reburn fuel will be used to …
Date:
October 24, 2000
Creator:
Annamalai, Dr. Kalyan; Sweeten, Dr. John & Mukhtar, Dr. Sayeed
Object Type:
Report
System:
The UNT Digital Library
Color transparency and pion valence quark distributions from di-jet events in Fermilab E791
Diffractive, exclusive di-jet events produced by 500 GeV/c {pi}{sup {minus}} scattered off nuclei were used to measure their A-dependence, and to make the first direct measurement of the valence-quark momentum distribution in pions. Data on the latter are compared to two limiting predictions for the pion light-cone wave-function. The results show that the asymptotic wave-function of perturbative QCD describes the data well for Q{sup 2} of 10 GeV{sup 2} and above. The measured A-dependence is consistent with observation of point-like configurations in the pion and color-transparency calculations.
Date:
October 10, 2000
Creator:
Appel, Jeffrey A.
Object Type:
Article
System:
The UNT Digital Library
Neutrino masses at v3/2
Theories in which neutrino masses are generated by a conventional see-saw mechanism generically yield masses which are O(v{sup 2}) in units where M{sub Pl} = 1, which is naively too small to explain the results from SuperKamiokande. In supersymmetric theories with gravity mediated supersymmetry breaking, the fundamental small parameter is not v/M{sub Pl}, but m{sub I}/M{sub Pl}, where m{sub I} is the scale of supersymmetry breaking in the hidden sector. We note that m{sub I}{sup 3}/M{sub Pl}{sup 2} is only slightly too large to explain SuperKamiokande, and present two models that achieve neutrino masses at this order in m{sub I}, one of which has an additional suppression {lambda}{sub {tau}}{sup 2}, while the other has additional suppression arising from a loop factor. The latter model shares a great deal of phenomenology with a class of models previously explored, including the possibility of viable sneutrino dark matter.
Date:
October 10, 2000
Creator:
Arkani-Hamed, Nima; Hall, Lawrence; Murayama, Hitoshi; Smith,David & Weiner, Neal
Object Type:
Report
System:
The UNT Digital Library
Radionuclide Transport Simulation Using Particle Tracking with Rock Matrix Diffusion
None
Date:
October 26, 2000
Creator:
Arnold, Bill W.; Zhang, Hubao & Robinson, Bruce A.
Object Type:
Article
System:
The UNT Digital Library
Cantilever Epitaxy: A simple Lateral Growth Technique for Reducing Dislocation Densitites in GaN and Other Nitrides
None
Date:
October 24, 2000
Creator:
Ashby, Carol I.; Willan, Christine C.; Han, Jung; Missert, Nancy A.; Provencio, Paula P.; Follstaedt, David M. et al.
Object Type:
Article
System:
The UNT Digital Library
GCMS Analyses of Chemical Vapor Deposition Precursors
None
Date:
October 2, 2000
Creator:
BARTRAM,MICHAEL E.
Object Type:
Article
System:
The UNT Digital Library
Canister Storage Building (CSB) Acceptance for Beneficial Use Index Roadmap of Supporting Documents
None
Date:
October 18, 2000
Creator:
BAZINET, G.D.
Object Type:
Report
System:
The UNT Digital Library
Fracture Behavior of Double-Ion-Exchanged Glass
None
Date:
October 27, 2000
Creator:
BEAUCHAMP,EDWIN KNIGHT
Object Type:
Article
System:
The UNT Digital Library