Information Technology: Comments on Proposed OMB Guidance for Implementing the Government Paperwork Elimination Act (open access)

Information Technology: Comments on Proposed OMB Guidance for Implementing the Government Paperwork Elimination Act

Correspondence issued by the General Accounting Office with an abstract that begins "GAO commented on the "Proposed Office of Management and Budget (OMB) Procedures and Guidance on Implementing the Government Paperwork Elimination Act.""
Date: July 2, 1999
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
Food Stamp Program: Various Factors Have Led to Declining Participation (open access)

Food Stamp Program: Various Factors Have Led to Declining Participation

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed states' efforts to reduce participation in the Food Stamp Program, focusing on: (1) the reasons for the recent drop in food stamp participation; and (2) any problems that households with eligible children have experienced in obtaining food stamps."
Date: July 2, 1999
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Dietary Supplements: Uncertainties in Analyses Underlying FDA's Proposed Rule on Ephedrine Alkaloids (open access)

Dietary Supplements: Uncertainties in Analyses Underlying FDA's Proposed Rule on Ephedrine Alkaloids

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the analyses underlying the Food and Drug Administration's (FDA) proposed rule on the food supplements, ephedrine alkaloids, focusing on: (1) the scientific basis for FDA's proposed rule; and (2) FDA's adherence to the regulatory analysis requirements for federal rulemaking."
Date: July 2, 1999
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Tax Administration: IRS' Abatement Process in Selected Locations (open access)

Tax Administration: IRS' Abatement Process in Selected Locations

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO described the Internal Revenue Service's (IRS) abatement process, focusing on IRS': (1) process for making abatements from initiation through final review in selected IRS locations; and (2) efforts to improve the abatement process."
Date: July 2, 1999
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Development of Alkaline Oxidative Dissolution Methods for Chromium (III) Compounds Present in Hanford Site Tank Sludges (open access)

Development of Alkaline Oxidative Dissolution Methods for Chromium (III) Compounds Present in Hanford Site Tank Sludges

The high-level radioactive waste sludge in the underground storage tanks at the Hanford Site contains various chromium(III)solid phases. Dissolution and removal of chromium from tank waste sludges is desirable prior to high-level waste vitrification because increased volume is required to incorporate the residual chromium. Unfortunately, dissolution of chromium from the sludge to form Cr(OH){sub 4}{sup {minus}} through treatment with heated NaOH solution (also used to dissolve aluminum phases and metathesize phosphates to sodium salts) generally has been unsuccessful in tests with both simulated and genuine Hanford waste sludges. Oxidative dissolution of the Cr(III) compounds to form soluble chromate has been proposed as an alternative chromium solid phase dissolution method and results of limited prior testing have been reported.
Date: July 2, 1999
Creator: Krot, N. N.; Shilov, V. P.; Fedoseev, A. M.; Budantseva, N. A.; Nikonov, M. V.; Yusov, A. B. et al.
Object Type: Report
System: The UNT Digital Library
Map of the Physical Sciences (open access)

Map of the Physical Sciences

Various efforts to map the structure of science have been undertaken over the years. Using a new tool, VxInsight{trademark}, we have mapped and displayed 3000 journals in the physical sciences. This map is navigable and interactively reveals the structure of science at many different levels. Science mapping studies are typically focused at either the macro-or micro-level. At a macro-level such studies seek to determine the basic structural units of science and their interrelationships. The majority of studies are performed at the discipline or specialty level, and seek to inform science policy and technical decision makers. Studies at both levels probe the dynamic nature of science, and the implications of the changes. A variety of databases and methods have been used for these studies. Primary among databases are the citation indices (SCI and SSCI) from the Institute for Scientific Information, which have gained widespread acceptance for bibliometric studies. Maps are most often based on computed similarities between journal articles (co-citation), keywords or topics (co-occurrence or co-classification), or journals (journal-journal citation counts). Once the similarity matrix is defined, algorithms are used to cluster the data.
Date: July 2, 1999
Creator: Boyack, Kevin W.
Object Type: Article
System: The UNT Digital Library
CUB DI (Deionization) column control system (open access)

CUB DI (Deionization) column control system

For the old MR (Main Ring), deionization was done with two columns in CUB, using an ion exchange process. Typically 65 GPM of LCW flew through a column, and the resistivity was raised from 3 Mohm-cm to over 12 Mohm-cm. After a few weeks, columns lost their effectiveness and had to be regenerated in a process involving backwashing and adding hydrochloric acid and sodium hydroxide. For normal MR operations, LCW returned from the ring and passed through the two columns in parallel for deionization, although the system could have been operated satisfactorily with only one in use. A 3000 gallon reservoir (the Spheres) provided a reserve of LCW for allowing water leaks and expansions in the MR. During the MI (Main Injector) construction period, the third DI column was added to satisfy requirements for the MI. When the third column was added, the old regeneration controller was replaced with a new controller based on an Allen-Bradley PLC (i.e., SLC-5/04). The PLC is widely used and well documented, and therefore it may allow us to modify the regeneration programs in the future. In addition to the above regeneration controller, the old control panels (which were used to manipulate pumps and valves …
Date: July 2, 1999
Creator: Seino, K. C.
Object Type: Report
System: The UNT Digital Library
Recent results from the Tevatron fixed target and collider experiments (open access)

Recent results from the Tevatron fixed target and collider experiments

We present a review of recent QCD related results from the Fermilab Tevatron fixed target and collider experiments. Topics include jet and boson production, W boson and top quark mass measurements, and studies of CP violation.
Date: July 2, 1999
Creator: Gerber, Cecilia E.
Object Type: Article
System: The UNT Digital Library
Inclusive jets at the Tevatron (open access)

Inclusive jets at the Tevatron

Results from CDF and D0 collaborations on the inclusive jet cross sections at 1800 and 630 GeV and strong coupling constant are presented. The statistical uncertainties are significantly reduced relative to the previous results and experimental systematic uncertainties are comparable with the uncertainties in the theoretical predictions. Despite observed discrepancies with theory, which could be accommodated by modifications of parton distribution functions, the inclusive jet cross sections can be described by perturbative Quantum Chromodynamics.
Date: July 2, 1999
Creator: Mesropian, C.
Object Type: Article
System: The UNT Digital Library
Fisher Helium Purge Flow Control Valve and Relay (open access)

Fisher Helium Purge Flow Control Valve and Relay

Fisher-Helium Purge Flow Control Valve and Relay.
Date: July 2, 1999
Creator: Van Katwijk, Carl
Object Type: Report
System: The UNT Digital Library
Cold Vacuum Drying facility sanitary sewage collection system design description (SYS 27) (open access)

Cold Vacuum Drying facility sanitary sewage collection system design description (SYS 27)

This document describes the Cold Vacuum Drying Facility (CVDF) sanitary sewage collection system. The sanitary sewage collection system provides collection and storage of effluents and raw sewage from the CVDF to support the cold vacuum drying process. This system is comprised of a sanitary sewage holding tank and pipes for collection and transport of effluents to the sanitary sewage holding tank.
Date: July 2, 1999
Creator: PITKOFF, C.C.
Object Type: Report
System: The UNT Digital Library
Searches for new phenomena at the Tevatron: SUSY and technicolor (open access)

Searches for new phenomena at the Tevatron: SUSY and technicolor

We present some of the latest updated results on searches for physics beyond the Standard Model at the Tevatron Collider using the full Run 1 data sample of p{anti p} collisions at {radical}s = 1.8 TeV collected with the CDF and D0 detectors. Results are reported relative to searches for squarks and gluinos, scalar top and bottom quarks and superlight gravitino. 95% CL exclusion limits are presented for degenerate states of Technicolor particles {rho}<sub>T</sub> and {omega}<sub>T</sub>.
Date: July 2, 1999
Creator: Rolli, S.
Object Type: Article
System: The UNT Digital Library
Cold Vacuum Drying facility deionized water system design description (SYS 25) (open access)

Cold Vacuum Drying facility deionized water system design description (SYS 25)

This document describes the Cold Vacuum Drying Facility (CVDF) de-ionized water system. The de-ionized water system is used to provide clean, conditioned water, free from contaminants, chlorides and iron for the CVD Facility. Potable water is supplied to the deionized water system, isolated by a backflow prevention device. After the de-ionization process is complete, via a packaged de-ionization unit, de-ionized water is supplied to the process deionization unit.
Date: July 2, 1999
Creator: PITKOFF, C.C.
Object Type: Report
System: The UNT Digital Library
Cold Vacuum Drying facility potable water system design description (SYS 26) (open access)

Cold Vacuum Drying facility potable water system design description (SYS 26)

This document describes the Cold Vacuum Drying Facility (CVDF) potable water (PW) system. The PW system provides potable water to the CVDF for supply to sinks, water closets, urinals, showers, custodial service sinks, drinking fountains, the decontamination shower, supply water to the non-PW systems, and makeup water for the de-ionized water system.
Date: July 2, 1999
Creator: PITKOFF, C.C.
Object Type: Report
System: The UNT Digital Library
Cold Vacuum Drying (CVD) Facility Safety Class Instrumentation and Control System Design Description SYS 93-2 (open access)

Cold Vacuum Drying (CVD) Facility Safety Class Instrumentation and Control System Design Description SYS 93-2

This document describes the Cold Vacuum Drying Facility (CVDF) Safety Class Instrumentation and Control system (SCIC). The SCIC provides safety functions and features to protect the environment, off-site and on-site personnel and equipment. The function of the SCIC is to provide automatic trip features, valve interlocks, alarms, indication and control for the cold vacuum drying process.
Date: July 2, 1999
Creator: Whitehurst, R.
Object Type: Report
System: The UNT Digital Library
Data Quality Objectives for Tank Farms Waste Compatibility Program (open access)

Data Quality Objectives for Tank Farms Waste Compatibility Program

There are 177 waste storage tanks containing over 210,000 m{sup 3} (55 million gal) of mixed waste at the Hanford Site. The River Protection Project (RPP) has adopted the data quality objective (DQO) process used by the U.S. Environmental Protection Agency (EPA) (EPA 1994a) and implemented by RPP internal procedure (Banning 1999a) to identify the information and data needed to address safety issues. This DQO document is based on several documents that provide the technical basis for inputs and decision/action levels used to develop the decision rules that evaluate the transfer of wastes. A number of these documents are presently in the process of being revised. This document will need to be revised if there are changes to the technical criteria in these supporting documents. This DQO process supports various documents, such as sampling and analysis plans and double-shell tank (DST) waste analysis plans. This document identifies the type, quality, and quantity of data needed to determine whether transfer of supernatant can be performed safely. The requirements in this document are designed to prevent the mixing of incompatible waste as defined in Washington Administrative Code (WAC) 173-303-040. Waste transfers which meet the requirements contained in this document and the Double-Shell …
Date: July 2, 1999
Creator: BANNING, D.L.
Object Type: Report
System: The UNT Digital Library
Texas Register, Volume 24, Number 27, Pages 4931-5077, July 2, 1999 (open access)

Texas Register, Volume 24, Number 27, Pages 4931-5077, July 2, 1999

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: July 2, 1999
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Magnetic properties of Dy in Pb{sub 2}Sr{sub 2}DyCu{sub 3}O{sub 8}. (open access)

Magnetic properties of Dy in Pb{sub 2}Sr{sub 2}DyCu{sub 3}O{sub 8}.

Superconductivity can be induced at high temperatures in Pb{sub 2}Sr{sub 2}RCu{sub 3}O{sub 8} (R - rare earth) by partially doping Ca{sup 2+} for R{sup 3+}. In order to understand the interplay between magnetism and superconductivity, the magnetic properties of the parent compounds, Pb{sub 2}Sr{sub 2}RCu{sub 3}O{sub 8}, have been studied. The work presented here includes magnetic susceptibility and specific heat measurements on R = Dy and extends our previous studies on R = Ce, Pr, Tb, Ho and Er. Specific heat experiments suggest that the Dy ions order antiferromagnetically with an ordering temperature of 1.3K. The magnetic susceptibility data are in good agreement with the susceptibility calculated using crystal field parameters that are extrapolated from previous modeling of the R = Er and Ho analogs of this series.
Date: July 2, 1999
Creator: Movshovich, R.; Skanthakumar, S. & Soderholm, L.
Object Type: Article
System: The UNT Digital Library
Recent Development of Metallic Materials (open access)

Recent Development of Metallic Materials

Metallic materials play a vital role in the development of advanced engineering systems for industrial applications. In this paper, the recent development of two metallic alloy families will be briefly reviewed: (1) ordered intermetallics, and (2) bulk metallic glasses. Ordered intermetallic alloys based on aluminides and silicides possess many promising properties for structural use at elevated temperatures in hostile environments. This is because these alloys have excellent oxidation and corrosion resistance, high temperature strength, and relatively low material density. Bulk metallic glasses containing multiple alloying elements constitute a new and exciting class of metallic materials with attractive mechanical, chemical, and magnetic properties for structural and functional use. Recent development indicates that bulk metallic glasses with high glass forming ability can be readily produced by conventional melting and casting techniques.
Date: July 2, 1999
Creator: Liu, C.T. & Nieh, T.G.
Object Type: Article
System: The UNT Digital Library
Thermal-hydraulic development a small, simplified, proliferation-resistant reactor. (open access)

Thermal-hydraulic development a small, simplified, proliferation-resistant reactor.

This paper addresses thermal-hydraulics related criteria and preliminary concepts for a small (300 MWt), proliferation-resistant, liquid-metal-cooled reactor system. A main objective is to assess what extent of simplification is achievable in the concepts with the primary purpose of regaining economic competitiveness. The approach investigated features lead-bismuth eutectic (LBE) and a low power density core for ultra-long core lifetime (goal 15 years) with cartridge core replacement at end of life. This potentially introduces extensive simplifications resulting in capital cost and operating cost savings including: (1) compact, modular, pool-type configuration for factory fabrication, (2) 100+% natural circulation heat transport with the possibility of eliminating the main coolant pumps, (3) steam generator modules immersed directly in the primary coolant pool for elimination of the intermediate heat transport system, and (4) elimination of on-site fuel handling and storage provisions including rotating plug. Stage 1 natural circulation model and results are presented. Results suggest that 100+% natural circulation heat transport is readily achievable using LBE coolant and the long-life cartridge core approach; moreover, it is achievable in a compact pool configuration considerably smaller than PRISM A (for overland transportability) and with peak cladding temperature within the existing database range for ferritic steel with oxide layer …
Date: July 2, 1999
Creator: Farmer, M. T.; Hill, D. J.; Sienicki, J. J.; Spencer, B. W. & Wade, D. C.
Object Type: Article
System: The UNT Digital Library
Chemical dynamics in the gas phase : quantum mechanics of chemical reactions. (open access)

Chemical dynamics in the gas phase : quantum mechanics of chemical reactions.

This research program focuses on both the development and application of accurate quantum mechanical methods to describe gas phase chemical reactions and highly excited molecules. Emphasis is often placed on time-dependent or integrative approaches that, in addition to computational simplifications, yield useful mechanistic insights. Applications to systems of current experimental and theoretical interest are emphasized. The results of these calculations also allow one to gauge the quality of the underlying potential energy surfaces and the reliability of more approximate theoretical approaches such as classical trajectories and transition state theories.
Date: July 2, 1999
Creator: Gray, S. K.
Object Type: Article
System: The UNT Digital Library
Development of Alkaline Oxidative Dissolution Methods for Chromium (III) Compounds Present in Hanford Site Tank Sludges (open access)

Development of Alkaline Oxidative Dissolution Methods for Chromium (III) Compounds Present in Hanford Site Tank Sludges

The high-level radioactive waste sludge in the underground storage tanks at the Hanford Site contains various chromium solid phases. Dissolution and removal of chromium from tank waste sludges is desirable prior to high-level waste vitrification because increased volume is required to incorporate the residual chromium. Unfortunately, dissolution of chromium from the sludge to form Cr(OH){sub 4}{sup -} through treatment with heated NaOH solution (also used to dissolve aluminum phases and metathesize phosphates to sodium salts) generally has been unsuccessful in tests with both simulated and genuine Hanford waste sludges. Oxidative dissolution of the Cr(III) compounds to form soluble chromate has been proposed as an alternative chromium solid phase dissolution method and results of limited prior testing have been reported. The present systematic tests investigated oxygen gas, hydrogen peroxide, and sodium persulfate oxidants to dissolve Cr(III) under alkaline conditions to form soluble chromate. Permanganate and ozone also were considered for testing but were thought to be of secondary interest because of the insoluble residue (MnO{sub 2} from permanganate) and complex equipment (necessary to generate ozone) implicit with use of these reagents. The oxygen and hydrogen peroxide reagents leave no condensable residue and sodium persulfate only leaves soluble sodium sulfate. Crystalline Cr(OH){sub …
Date: July 2, 1999
Creator: Delegard, Calvin H.; Krot, N. N.; Shilov, V. P.; Fedoseev, A. M.; Budantseva, N. A.; Nikonov, M. V. et al.
Object Type: Text
System: The UNT Digital Library
Estimates of Dose Equivalent Through the Wide Angle Hall End Wall (open access)

Estimates of Dose Equivalent Through the Wide Angle Hall End Wall

None
Date: July 2, 1999
Creator: Kahn, S. & Stevens, A. J.
Object Type: Report
System: The UNT Digital Library
Decision document for the Storage and Maintenance activities of Characterization Long Length Contaminated Equipment Removal System (open access)

Decision document for the Storage and Maintenance activities of Characterization Long Length Contaminated Equipment Removal System

The Long Length Contaminated Equipment Removal System (LLCERS) was designed to aid in the removal of long contaminated equipment from tanks. The equipment has been stored in an open laydown yard with no weather protection. After a review of alternatives for storage of the LLCERS an decision was made to lease a steel rib framed fabric structure to store the equipment.
Date: July 2, 1999
Creator: Boger, R. M.
Object Type: Report
System: The UNT Digital Library