Small angular scale simulations of the microwave sky (open access)

Small angular scale simulations of the microwave sky

None
Date: June 21, 1996
Creator: Saez, D.; Holtmann, E. & Smoot, G. F.
Object Type: Article
System: The UNT Digital Library
Performance of VJRR, Six O’clock Valve Boxes and Circulating Compressor (open access)

Performance of VJRR, Six O’clock Valve Boxes and Circulating Compressor

None
Date: November 21, 1996
Creator: Wu, K. C.
Object Type: Report
System: The UNT Digital Library
Automating Pro/Engineer Using Trail Files and External Programs (open access)

Automating Pro/Engineer Using Trail Files and External Programs

Keyboard macros provide shortcuts to many repetitive command sequences in Pro/Engineer. They map any number of frequently used command sequences to user-selected keyboard keys. They may be nested within each other and may also include user keyboard entry within the macro. Another powerful feature of Pro/Engineer is adding menu options. Menu options may be added to any Pro/Engineer menu and is an effective way to graphically display keyboard macros to make them more accessible. Command sequences are mapped to a single user-defined menu option added to the bottom of any Pro/Engineer window. The '{at}setbutton' command added to the 'menu{_}def.pro' file specifies the commands to associate with added menu options. Menu options may also be used to execute non-Pro/Engineer commands. The associated command is linked to a menu option within Pro/Engineer's Utilities menu (in the Misc menu) and is issued whenever the menu option is selected. Such a feature is useful for adding menu options to start the Pro/Engineer User Guide utility, start a text editor from within Pro/Engineer, or perform system level actions. The '{at}setbutton{_}exec' command is used in the 'menu{_}def.pro' file for non-Pro/Engineer commands. A more detailed description of adding menu options can be found in the Pro/Engineer Fundamentals …
Date: May 21, 1996
Creator: Chow, K.
Object Type: Report
System: The UNT Digital Library
Covert Action: An Effective Instrument of U. S. Foreign Policy? (open access)

Covert Action: An Effective Instrument of U. S. Foreign Policy?

This report addresses the statutory basis for covert actions, criteria for their use in the post-Cold War world, and procedures for their planning, conducting, and funding.
Date: October 21, 1996
Creator: Best, Richard A., Jr.
Object Type: Report
System: The UNT Digital Library
Europe and China — An Emerging Relationship (open access)

Europe and China — An Emerging Relationship

None
Date: June 21, 1996
Creator: Sutter, Robert G.
Object Type: Report
System: The UNT Digital Library
Homosexuality and the Federal Constitution: A Legal Analysis of the U.S. Supreme Court Ruling in Romer v. Evans (open access)

Homosexuality and the Federal Constitution: A Legal Analysis of the U.S. Supreme Court Ruling in Romer v. Evans

None
Date: June 21, 1996
Creator: Dale, Charles V.
Object Type: Report
System: The UNT Digital Library
New Welfare Law: The Personal Responsibility and Work Opportunity Reconciliation Act of 1996 (open access)

New Welfare Law: The Personal Responsibility and Work Opportunity Reconciliation Act of 1996

None
Date: November 21, 1996
Creator: Burke, Vee; Richardson, Joe; Solomon-Fears, Carmen; Spar, Karen & Vialet, Joyce C.
Object Type: Report
System: The UNT Digital Library
Radcalc for Windows 2.0 transportation packaging software to determine hydrogen generation and transportation classification (open access)

Radcalc for Windows 2.0 transportation packaging software to determine hydrogen generation and transportation classification

Radclac for Windows is a user friendly menu-driven Windows compatible software program with applications in the transportation of radioactive materials. It calculates the radiolytic generation of hydrogen gas in the matrix of low-level and high-level radioactive wastes. It also calculates pressure buildup due to hydrogen and the decay heat generated in a package at seal time. It computes the quantity of a radionuclide and its associated products for a given period of time. In addition, the code categorizes shipment quantities as reportable quantity (RQ), radioactive Type A or Type B, limited quality (LQ), low specific activity (LSA), highway road controlled quality (HRCQ), and fissile excepted using US Department of Transportation (DOT) definitions and methodologies.
Date: October 21, 1996
Creator: Green, J.R.
Object Type: Article
System: The UNT Digital Library
340 Representative sampling verification tank sampling and analysis plan (open access)

340 Representative sampling verification tank sampling and analysis plan

This Sampling and Analysis Plan contains requirements for characterizing the 340 vault tank 1. The objective of the sampling and characterization is to determine if the tank is homogeneous when agitated and which sampling method provides the most representative sample. A secondary objective is to collect and characterize solid samples.
Date: August 21, 1996
Creator: Olander, A.R., Westinghouse Hanford
Object Type: Report
System: The UNT Digital Library
Test report for K Basin MK I lid removal and replacement system (open access)

Test report for K Basin MK I lid removal and replacement system

This report provides the results of acceptance testing of sampling equipment for use in the Hanford K Basin. The equipment, MK I Lid Removal/Replacement Tools, were designed to remove/replace MK I Spent Fuel Canister lids so that other equipment may be used to sample the canister contents. The tools were determined to be acceptable for their intended use.
Date: August 21, 1996
Creator: Omberg, R. P. & Roe, N. R.
Object Type: Report
System: The UNT Digital Library
Criticality parameters for tank waste evaluation (open access)

Criticality parameters for tank waste evaluation

A summary is provided of basic parameters used to evaluate criticality safety of high-level tank waste at the Hanford Site.Critical sizes and plutonium concentrations are based on a conservative waste model with reduced neutron absorption and optimized water. Figures were provided of sphere and slab minimum critical dimensions and plutonium critical masses.Minimum subcritical limit absorber/plutonium mass ratios are provided for selected waste components. Component contributions to subcriticality can be combined by adding the individual actual-to-minimum subcritical mass fractions. A discussion is provided of the margin of safety inherent in tank waste.
Date: August 21, 1996
Creator: Rogers, C.A. & Harris, H.
Object Type: Report
System: The UNT Digital Library
CALDERON COKEMAKING PROCESS/DEMONSTRATION PROJECT (open access)

CALDERON COKEMAKING PROCESS/DEMONSTRATION PROJECT

This project deals with the demonstration of a full size commercial coking retort using Calderon's novel process for making metallurgical coke. Tests are currently being conducted on a heat resistant alloy by subjecting such alloy to raw gases from an actual operating coke oven at LTV Steel's coke plant in Warren, Ohio to determine the effects of sulfurous gases on the alloy before ordering 232,000 lbs of this alloy for the full size commercial coking retort. Design engineering is proceeding.
Date: June 21, 1996
Creator: CALDERON, ALBERT
Object Type: Report
System: The UNT Digital Library
Test report for calibration grooming and alignment of the LDUA purge air supply (LDUA SYSTEM 5230) (open access)

Test report for calibration grooming and alignment of the LDUA purge air supply (LDUA SYSTEM 5230)

The Light Duty Utility Arm (LDUA) is a remotely operated manipulator used to enter into underground waste tanks through one of the tank risers. National Electric Code requirements mandate that the in-tank portions of the LDUA be maintained at a positive pressure for entrances into a flammable atmosphere. The LDUA Purge Air Supply System (PASS) uses small portable air compressors to provide a constant low flow of instrument grade air for this purpose. This document contains the results, conclusions and recommendations arrived at by the calibration grooming and alignment tests performed on the PASS in accordance with WHC-SD-WM-TC-070.
Date: May 21, 1996
Creator: Potter, J. D.
Object Type: Report
System: The UNT Digital Library
Imaging Sciences Workshop Proceedings (open access)

Imaging Sciences Workshop Proceedings

This report contains the proceedings of the Imaging Sciences Workshop sponsored by C.A.S.LS., the Center for Advanced Signal & Image Sciences. The Center, established primarily to provide a forum where researchers can freely exchange ideas on the signal and image sciences in a comfortable intellectual environment, has grown over the last two years with the opening of a Reference Library (located in Building 272). The Technical Program for the 1996 Workshop include a variety of efforts in the Imaging Sciences including applications in the Microwave Imaging, highlighted by the Micro-Impulse Radar (MIR) system invented at LLNL, as well as other applications in this area. Special sessions organized by various individuals in Speech, Acoustic Ocean Imaging, Radar Ocean Imaging, Ultrasonic Imaging, and Optical Imaging discuss various applica- tions of real world problems. For the more theoretical, sessions on Imaging Algorithms and Computed Tomography were organized as well as for the more pragmatic featuring a session on Imaging Systems.
Date: November 21, 1996
Creator: Candy, J.V.
Object Type: Article
System: The UNT Digital Library
Desalination with carbon aerogel electrodes (open access)

Desalination with carbon aerogel electrodes

An electrically regenerated electrosorption process known as carbon aerogel CDI was developed for continuously removing ionic impurities from aqueous streams. A salt solution flows in a channel formed by pairs of parallel carbon aerogel electrodes. Each electrode has a very high BET surface area and very low resistivity. After polarization, anions and cations are removed from electrolyte by the electric field and electrosorbed onto the carbon aerogel. The solution is thus separated into two streams, brine and water. Based on this, carbon aerogel CDI appears to be an energy-efficient alternative to evaporation, electrodialysis, and reverse osmosis. The energy required by this process is about QV/2, plus losses. Estimated energy requirement for sea water desalination is 18-27 Wh gal{sup -1}, depending on cell voltage and flow rate. The requirement for brackish water desalination is less, 1.2-2.5 Wh gal{sup -1} at 1600 ppM. This is assuming that stored electrical energy is reclaimed during regeneration.
Date: October 21, 1996
Creator: Farmer, J.C.; Richardson, J.H. & Fix, D.V.
Object Type: Report
System: The UNT Digital Library
Free energy of hydration of niobium oxide (open access)

Free energy of hydration of niobium oxide

Some of the glasses being formulated by SRTC researchers contain niobium oxide. In this report, the free energy of hydration of the oxide is calculated from the free energies of formation of the oxide, the hydroxide, and water. This value can be used in calculations of the free energy of hydration of glasses containing niobium.
Date: August 21, 1996
Creator: Plodinec, M.J.
Object Type: Report
System: The UNT Digital Library
Systems and economic analysis of microalgae ponds for conversion of CO{sub 2} to biomass. Final report (open access)

Systems and economic analysis of microalgae ponds for conversion of CO{sub 2} to biomass. Final report

There is growing evidence that global warming could become a major global environmental threat during the 21st century. The precautionary principle commands preventive action, at both national and international levels, to minimize this potential threat. Many near-term, relatively inexpensive, mitigation options are available. In addition, long-term research is required to evaluate and develop advanced, possibly more expensive, countermeasures, in the eventuality that they may be required. The utilization of power plant CO{sub 2} and its recycling into fossil fuel substitutes by microalgae cultures could be one such long-term technology. Microalgae production is an expanding industry in the U.S., with three commercial systems (of approximately 10 hectare each) producing nutriceuticals, specifically beta-carotene, extracted from Dunaliella, and Spirulina biomass. Microalgae are also used in wastewater treatment. Currently production costs are high, about $10,000/ton of algal biomass, almost two orders of magnitude higher than acceptable for greenhouse gas mitigation. This report reviews the current state-of-the-art, including algal cultivation and harvesting-processing, and outlines a technique for achieving very high productivities. Costs of CO{sub 2} mitigation with microalgae production of oils ({open_quotes}biodiesel{close_quotes}) are estimated and future R&D needs outlined.
Date: March 21, 1996
Creator: Benemann, John R. & Oswald, William J.
Object Type: Report
System: The UNT Digital Library
First positron annihilation lifetime measurement of Pu (open access)

First positron annihilation lifetime measurement of Pu

We have made the first measurement of defects in an aged sample of {delta} phase, Ga stabilized Pu, using positron annihilation lifetime spectroscopy. This measurement validates the procedure necessary to perform measurements on this highly toxic material and obtain data representative of sample conditions. Comparison of the positron annihilation lifetime analysis of the data with calculated values suggests that He filled vacancies or vacancy clusters dominate the defect population. Such defects are the necessary precursor to void growth and swelling. The evolution of defects resulting from the radioactive decay of Pu during its life in the stockpile is one of the unknown quantities affecting our confidence in predictions of the limit on stockpile components. Radiation damage leads to changes in the size and strength of metals studied for reactor and accelerator use and similar effects may be expected in Pu. The evolution of radiation produced vacancies into larger void structures and accompanying macroscopic swelling may occur in Pu at some age. A detailed understanding of the defects in self irradiated Pu is required to predict the time scale of void swelling and related radiation effects. 1 fig.
Date: November 21, 1996
Creator: Colmenares, C.; Howell, R.H.; Ancheta, D.; Cowan, T.; Hanafee, J. & Sterne, P.
Object Type: Report
System: The UNT Digital Library
Compact tokamak reactors part 2 (numerical results) (open access)

Compact tokamak reactors part 2 (numerical results)

The authors describe a numerical optimization scheme for fusion reactors. The particular application described is to find the smallest copper coil spherical tokamak, although the numerical scheme is sufficiently general to allow many other problems to be solved. The solution to the steady state energy balance is found by first selecting the fixed variables. The range of all remaining variables is then selected, except for the temperature. Within the specified ranges, the temperature which satisfies the power balance is then found. Tests are applied to determine that remaining constraints are satisfied, and the acceptable results then stored. Results are presented for a range of auxiliary current drive efficiencies and different scaling relationships; for the range of variables chosen the machine encompassing volume increases or remains approximately unchanged as the aspect ratio is reduced.
Date: October 21, 1996
Creator: Wiley, J.C.; Wootton, A.J. & Ross, D.W.
Object Type: Report
System: The UNT Digital Library
Final report for tank 241-AN-102, grab samples 2AN-95-1 through 2AN-95-6 and 102-AN-1 through 102-AN-4 (open access)

Final report for tank 241-AN-102, grab samples 2AN-95-1 through 2AN-95-6 and 102-AN-1 through 102-AN-4

Ten grab samples (2AN-95-1, 2, 3, 4A, 5A; 102-AN-1, 2, 3(A), 3(B), and 4) and one field blank (2AN-95-6) were taken from tank 241-AN-102. In support of the safety screening program, total organic carbon and cyanide were performed as secondary analyses because the differential scanning calorimetry results exceeded the notification limit. These were compared to safety screening limits at a confidence level of 95%. Waste compatibility analyses were performed on the 3 supernate samples and the field blank from the latest sampling event. Results presented in the 45 day and in this report show that the waste in Tank 241-AN-1D2 has energetics greater than 480 J/g (dry) and total organic carbon > 3 wt%; however, with a moisture content > 17 wt%, the tank may be considered ``conditionally`` safe in accordance with the Data Quality Objective to Support Resolution of the Organic Complexant Safety Issue.
Date: March 21, 1996
Creator: Esch, R.A.
Object Type: Report
System: The UNT Digital Library
An improved pinhole spatial filter (open access)

An improved pinhole spatial filter

Lasers generate phase aberrated light that can damage laser glass, frequency conversion crystals, lenses, and mirror coatings and can also reduce extractable energy and power. Spatial pinhole filters can partly eliminate such ``hot spots.`` Problems are that the pinhole closes during the laser pulse and has to be made too large initially. Debris from the pinhole can coat or damage spatial filter lenses. This paper presents a novel design for a more robust pinhole filter. Phase distorted (hot spot) light refracts at grazing incidence by plasma on the wall of a funnel shaped filter resulting in less absorption and debris. Refracted light absorbs at low intensities on the vacuum wall. We present 2D hydrodynamic computer simulations and compare the two types of filters with experiment.
Date: August 21, 1996
Creator: Estabrook, K.; Celliers, P.; Murray, J.; Wallace, R.; Stone, G.; Van Wonterghem, B. et al.
Object Type: Article
System: The UNT Digital Library
N2 vs H20 as purge/hydrostatic head (open access)

N2 vs H20 as purge/hydrostatic head

This document provides the information to explain to the customer the ETP for the N2 vs H20 as Purge/Hydrostatic Head. This ETP follows the format described in Issurance of New Characterization Equipment Engineering Desk Instructions, 75200-95-013.
Date: March 21, 1996
Creator: Mast, J.C.
Object Type: Report
System: The UNT Digital Library
Museum in a School (reaching the unreachable audience). Final report, February 2, 1993--December 14, 1995 (open access)

Museum in a School (reaching the unreachable audience). Final report, February 2, 1993--December 14, 1995

SciTech, an interactive science and technology center located 45 miles west of Chicago, is dedicated to providing hands-on and minds-on experiences that explore the spectrum of science and mathematics. SciTech opened at its present location during the summer of 1990 in Aurora, a changing community with a large minority population. Since then, SciTech has received over 331,000 visitors from the entire Chicago metropolitan area. There are now more than 250 exhibits housed in the museum. SciTech has grown quickly in part due to the strong volunteer support from the research and development corridor population it serves, as well as through international ties. SciTech has become known as an innovative force in the science museum community for its original exhibits and unique youth and school programs. SciTech`s traveling outreach program, ``Museum in a School,`` has served over 391 public and private schools in 111 districts in the Chicago metropolitan area, and has reached over 3,099 teachers and 98,837 students throughout its history. This program serves a wide variety of students, including bilingual, economically depressed, and learning impaired. SciTech is concerned with every American`s need for increasing basic science literacy.
Date: February 21, 1996
Creator: Diaz, O.
Object Type: Report
System: The UNT Digital Library
Acceptance test report, 241-AW air inlet filter station pressure decay test (open access)

Acceptance test report, 241-AW air inlet filter station pressure decay test

This is the acceptance test report for pressure decay tests performed on newly-installed 241-AW Tank Farm primary ventilation system air inlet filter stations.
Date: February 21, 1996
Creator: Tuck, J.A.
Object Type: Report
System: The UNT Digital Library