Long term stability of the NBS design Debye dielectric coaxial line waveshaping filter (open access)

Long term stability of the NBS design Debye dielectric coaxial line waveshaping filter

By means of analysis of NBS laboratory notebooks for the period of 1976--1982 in conjunction with recent LANL P14 measurements it is shown that the Model 100-1, S/N 1 Debye Coaxial Line is stable. From the date of its inception in July 1977 to the present, at a temperature of 30 C the transition duration of the filter insertion step response has remained a 125.8 ps while the relative dielectric constant has remained at 2.7. Also, capacitance measurements on the NBS--held Model 100-2, S/N 2 have demonstrated that the capacitance has remained at 32.3 pF since 1979.
Date: December 28, 1993
Creator: Nahman, N.S.
Object Type: Report
System: The UNT Digital Library
Long term stability of the NBS design Debye dielectric coaxial line wave shaping filter (open access)

Long term stability of the NBS design Debye dielectric coaxial line wave shaping filter

By means of analysis of NBS laboratory notebooks for the period of 1976--1982 in conjunction with recent LANL P14 measurements it is shown that the Model 100-1, S/N 1 Debye Coaxial Line is stable. From the date of its inception in July 1977 to the present, at a temperature of 30 C the transition duration of the filter insertion step response has reexamined a 125.8 ps while the relative dielectric constant has remained at 2.7. Also, capacitance measurements on the NBS--held Model 100-2, S/N 2 have demonstrated that the capacitance has remained at 32.3 pF since 1979.
Date: December 28, 1993
Creator: Nahman, N.S.
Object Type: Report
System: The UNT Digital Library
Novel Approaches to the Production of Higher Alcohols From Synthesis Gas (open access)

Novel Approaches to the Production of Higher Alcohols From Synthesis Gas

None
Date: April 28, 1993
Creator: Roberts, George W. & Kow, Shirley
Object Type: Report
System: The UNT Digital Library
Apparatus and method for two-stage oxidation of wastes (open access)

Apparatus and method for two-stage oxidation of wastes

An apparatus and method for oxidizing wastes in a two-stage process. The apparatus includes an oxidation device, a gas-liquid contacting column and an electrocell. In the first stage of the process, wastes are heated in the presence of air to partially oxidize the wastes. The heated wastes produce an off-gas stream containing oxidizable materials. In the second stage, the off-gas stream is cooled and flowed through the contacting column, where the off-gas stream is contacted with an aqueous acid stream containing an oxidizing agent having at least two positive valence states. At least a portion of the oxidizable materials are transferred to the acid stream and destroyed by the oxidizing agent. During oxidation, the valence of the oxidizing agent is decreased from its higher state to its lower state. The acid stream is flowed to the electrocell, where an electric current is applied to the stream to restore the oxidizing agent to its higher valence state. The regenerated acid stream is recycled to the contacting column.
Date: September 28, 1993
Creator: Fleischman, S. D.
Object Type: Patent
System: The UNT Digital Library
Scaling laws for specialized hohlraums (open access)

Scaling laws for specialized hohlraums

The author presents scaling laws for the behavior of hohlraums that are somewhat more complex than a simple sphere or cylinder. In particular the author considers hohlraums that are in what has become known as a {open_quotes}primary{close_quotes} {open_quotes}secondary{close_quotes} configuration, namely geometries in which the laser is absorbed in a primary region of a hohlraum, and only radiation energy is transported to a secondary part of the hohlraum that is shielded from seeing the laser light directly. Such hohlraums have been in use of late for doing LTE opacity experiments on a sample in the secondary and in recently proposed {open_quotes}shimmed{close_quotes} hohlraums that use gold disks on axis to block a capsule`s view of the cold laser entrance hole. The temperature/drive of the secondary, derived herein, scales somewhat differently than the drive in simple hohlraums.
Date: September 28, 1993
Creator: Rosen, M.D.
Object Type: Report
System: The UNT Digital Library
Emergency evacuation/transportation plan update: Traffic model development and evaluation of early closure procedures. Final report (open access)

Emergency evacuation/transportation plan update: Traffic model development and evaluation of early closure procedures. Final report

Prolonged delays in traffic experienced by Laboratory personnel during a recent early dismissal in inclement weather, coupled with reconstruction efforts along NM 502 east of the White Rock Wye for the next 1 to 2 years, has prompted Los Alamos National Laboratory (LANL) to re-evaluate and improve the present transportation plan and its integration with contingency plans maintained in other organizations. Facilities planners and emergency operations staff need to evaluate the transportation system`s capability to inefficiently and safely evacuate LANL under different low-level emergency conditions. A variety of potential procedures governing the release of employees from the different technical areas (TAs) requires evaluation, perhaps with regard to multiple emergency-condition scenarios, with one or more optimal procedures ultimately presented for adoption by Lab Management. The work undertaken in this project will hopefully lay a foundation for an on-going, progressive transportation system analysis capability. It utilizes microscale simulation techniques to affirm, reassess and validate the Laboratory`s Early Dismissal/Closure/Delayed Opening Plan. The Laboratory is required by Federal guidelines, and compelled by prudent practice and conscientious regard for the welfare of employees and nearby residents, to maintain plans and operating procedures for evacuation if the need arises. The tools developed during this process can …
Date: October 28, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Development of biological coal gasification (MicGAS process); 14th Quarterly report (open access)

Development of biological coal gasification (MicGAS process); 14th Quarterly report

Reported here is the progress on the Development of Biological Coal Gasification for DOE contract No. DE-AC21-90MC27226 MOD A006. Task 1, NEPA Compliance and Updated Test Plan has been completed. Progress toward Task 2, Enhanced Methane Production, is reported in the areas of bacterial strain improvement, addition of co-substrates, and low cost nutrient amendment. Conclusions reached as a result of this work are presented. Plans for future work are briefly outlined.
Date: January 28, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Novel approaches to the production of higher alcohols from synthesis gas. Quarterly technical progress report No. 9, October 1, 1992--December 31, 1992 (open access)

Novel approaches to the production of higher alcohols from synthesis gas. Quarterly technical progress report No. 9, October 1, 1992--December 31, 1992

Several possible high-temperature reactor oils have been identified and are being evaluated. One candidate, Drakeol{reg_sign} 34 mineral oil, appeared to decompose rapidly during testing at 425{degree}C in the stirred autoclave. However, a thermal stability test in laboratory glassware showed that Drakeol{reg_sign} 34 was stable at about 360{degree}C, suggesting that the decomposition observed in the autoclave was not caused simply by high temperature. Another oil, Ethylflo{reg_sign} 180, also showed no signs of decomposition during thermal stability testing in the laboratory, also at a temperature of about 360{degree}C. The first of three methanol synthesis verification runs was conducted in the stirred autoclave, using the commercial BASF Cu/ZnO catalyst. Gas chromatograph failures and apparent catalyst deactivation prevented collection of any meaningful data during the run.
Date: April 28, 1993
Creator: Roberts, G. W. & Kow, S.
Object Type: Report
System: The UNT Digital Library
[The mechanisms of hydrogen incorporation in coal liquefaction] (open access)

[The mechanisms of hydrogen incorporation in coal liquefaction]

In earlier reports we have describe d our efforts to understand the mechanism of deuterium incorporation during the thermolysis of 1,2-diphenylethane and 2,2,5,5-tetramethyl-3,4-diphenylhexane under D[sub 2] gas in a glass vessel. We have reported that in both of these cases, there is substantial deuterium incorporation. A summary of our conclusions follows: Conclusions previously reported for the 1,2-diphenylethane (DPE) system. 1. Benzyl radicals produced in the thermolysis react mainly with DPE to extract a hydrogen atom and produce undeuterated toluene. 2. The 1,2-diphenylethyl radicals produced are mainly responsible for the reaction with D[sub 2] to give D atoms. 3. D atoms then react with aromatic rings to form adduct radicals which are, at least in part, reconverted to D-substituted aromatics in termination steps. 4.2-Phenylethyl radicals react in a less discriminating manner, 1/3 to 1/2 of the events probably involving direct reaction with D[sub 2]. 5. A reasonable match to major product distribution can be accomplished using a model consisting of the set of ten reactions.
Date: January 28, 1993
Creator: Guthrie, R.
Object Type: Report
System: The UNT Digital Library
[The mechanisms of hydrogen incorporation in coal liquefaction]. Sixth progress report, December 31, 1992 (open access)

[The mechanisms of hydrogen incorporation in coal liquefaction]. Sixth progress report, December 31, 1992

In earlier reports we have describe d our efforts to understand the mechanism of deuterium incorporation during the thermolysis of 1,2-diphenylethane and 2,2,5,5-tetramethyl-3,4-diphenylhexane under D{sub 2} gas in a glass vessel. We have reported that in both of these cases, there is substantial deuterium incorporation. A summary of our conclusions follows: Conclusions previously reported for the 1,2-diphenylethane (DPE) system. 1. Benzyl radicals produced in the thermolysis react mainly with DPE to extract a hydrogen atom and produce undeuterated toluene. 2. The 1,2-diphenylethyl radicals produced are mainly responsible for the reaction with D{sub 2} to give D atoms. 3. D atoms then react with aromatic rings to form adduct radicals which are, at least in part, reconverted to D-substituted aromatics in termination steps. 4.2-Phenylethyl radicals react in a less discriminating manner, 1/3 to 1/2 of the events probably involving direct reaction with D{sub 2}. 5. A reasonable match to major product distribution can be accomplished using a model consisting of the set of ten reactions.
Date: January 28, 1993
Creator: Guthrie, R.
Object Type: Report
System: The UNT Digital Library
Winter Fuels Report: Week Ending October 22, 1993 (open access)

Winter Fuels Report: Week Ending October 22, 1993

The Winter Fuels Report is intended to provide concise, timely information to the industry, the press, policymakers, consumers, analysts, and State and local governments on the following topics: Distillate fuel oil net production, imports and stocks on a US level and for all Petroleum Administration for Defense Districts (PADD) and product supplied on a US level; propane net production, imports and stocks on a US level and for PADD`s I, II, and III; natural gas supply and disposition and underground storage for the US and consumption for all PADD`S; as well as selected National average prices; residential and wholesale pricing data for heating oil and propane for those States participating in the joint Energy Information Administration (EIA)/State Heating Oil and Propane Program; crude oil and petroleum price comparisons for the US and selected cities; and a 6--10 Day, 30-Day, and 90-Day outlook for temperature and precipitation and US total heating degree-days by city.
Date: October 28, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library