26 Matching Results

Search Results

Results: 1 - 24 next
open access

Exploring novel silicon-containing polymers---From preceramic polymers to conducting polymers with nonlinear optical properties

Description: Several new types of silicon-containing preceramic polymers, i.e., poly(diorganosilacetylene) and poly(diorganosilvinylene) have been synthesized with molecular weights from 10,000 to 120,000. These polymers could be thermally converted to SiC with a moderate to high char yields. Ready solubility and good processability made these types of polymers attractive in their applications to ceramics. The thermal polymerization of diethynyldiphenyl-silane, which was reported in 1968 to afford poly(diph… more
Date: October 7, 1991
Creator: Pang, Yi.
Partner: UNT Libraries Government Documents Department
open access

A miniature inexpensive, oxygen sensing element

Description: An exhaustive study was conducted to determine the feasibility of Nernst-type oxygen sensors based on ceramics containing Bi{sub 2}O{sub 3}. The basic sensor design consisted of a ceramic sensing module sealed into a metal tube. The module accommodated an internal heater and thermocouple. Thermal-expansion-matched metals, adhesives, and seals were researched and developed, consistent with sequential firings during sensor assembly. Significant effort was devoted to heater design/testing and to m… more
Date: October 7, 1991
Creator: Arenz, R. W.
Partner: UNT Libraries Government Documents Department
open access

Acceleration using total internal reflection

Description: This report considers the use of a dielectric slab undergoing total internal reflection as an accelerating structure for charged particle beams. We examine the functional dependence of the electromagnetic fields above the surface of the dielectric for polarized incident waves. We present an experimental arrangement for testing the performance of the method, using apparatus under construction for the Grating Acceleration experiment at Brookhaven National Laboratory. 13 refs., 4 figs., 2 tabs.
Date: June 7, 1991
Creator: Fernow, R.C.
Partner: UNT Libraries Government Documents Department
open access

The Savannah River Site's Groundwater Monitoring Program, second quarter 1990

Description: The Environmental Protection Department/Environmental Monitoring Section (EPD/EMS) administers the Savannah River Site's (SRS) Groundwater Monitoring Program. During second quarter 1990 (April through June) EPD/EMS conducted routine sampling of monitoring wells and drinking water locations. EPD/EMS established two sets of flagging criteria in 1986 to assist in the management of sample results. The flagging criteria aid personnel in sample scheduling, interpretation of data, and trend identifica… more
Date: February 7, 1991
Partner: UNT Libraries Government Documents Department
open access

Simulation of longitudinal coupled-bunch instabilities

Description: The purpose of this note is to document some work done as part of the effort directed at designing and simulating a bunch-by-bunch feedback system to control longitudinal coupled bunch instabilities in the B-factory. In particular, I discuss the ring model used in the simulation program developed to study this feedback system. Basically the simulation is a simple tracking program in which the rf drive voltage, the wakefields due to all the bunches, the synchrotron radiation losses, and the kick… more
Date: February 7, 1991
Creator: Thompson, K.A.
Partner: UNT Libraries Government Documents Department
open access

Petroleum marketing monthly, November 1991. [Contains glossary]

Description: The Petroleum Marketing Monthly is designed to give information and statistical data about a variety of crude oils and refined petroleum products. The publication provides statistics on crude oil costs and refined petroleum products sales for use by industry, government, private sector analysts, educational institutions, and consumers. Data on crude oil include the domestic first purchase price, the f.o.b. and landed cost of imported crude oil, and the refiners' acquisition cost of crude oil. S… more
Date: November 7, 1991
Partner: UNT Libraries Government Documents Department
open access

Colorado State University program for developing, testing, evaluating and optimizing solar heating and cooling systems

Description: This report discusses the following tasks; solar heating with isothermal collector operation and advanced control strategy; solar cooling with solid desiccant; liquid desiccant cooling system development; solar house III -- development and improvement of solar heating systems employing boiling liquid collectors; generic solar domestic water heating systems; advanced residential solar domestic hot water (DHW) systems; management and coordination of Colorado State/DOE program; and field monitorin… more
Date: January 7, 1991
Partner: UNT Libraries Government Documents Department
open access

Trace gas emission data bases for atmospheric chemistry studies

Description: Global data bases of trace gas emissions to the atmosphere have been compiled for the use in atmospheric chemistry studies. The resolution provided is a 1{degree} latitude by 1{degree} longitude. A series of 3 data bases has been provided. The first is an inventory of emissions of NO{sub x} from fossil fuel combustion, while the second is an inventory of SO{sub 2} emissions from the same anthropogenic source. The third database includes a global inventory of the emissions of NO{sub x} from terr… more
Date: October 7, 1991
Creator: Dignon, J.
Partner: UNT Libraries Government Documents Department
open access

Systematic preparation of selective heterogeneous catalysts

Description: The Single Turnover (STO) procedure, involving pulses of hydrogen and 1-butene, was developed for studying the types of active sites present on supported metal catalysts. The STO procedure was used to study direct saturated sites and other topics. Frontier molecular orbital studies were also made.
Date: November 7, 1991
Creator: Augustine, R.L.
Partner: UNT Libraries Government Documents Department
open access

Reactor Restart Division trend analysis report, second quarter 1991

Description: This document provides a trend analysis for the Savannah River Reactor Restart Program. The data contained in this report is comprised of Nonconformance Report (NCR), Surveillance Reports, and Corrective Action Reports (CAR). The data trended now includes six quarters and provides the capability of looking at changing patterns in the various performance categories over time.
Date: October 7, 1991
Creator: Castles, R.B.
Partner: UNT Libraries Government Documents Department
open access

(Centralized reliability data organization for liquid metal reactor components)

Description: The Centralized Reliability Data Organization is a data bank and data analysis center, focusing on reliability, availability, and maintainability (RAM) data for components (e.g., valves, pumps, etc.) operating in liquid metal reactors and test facilities. PNC staff are using the CREDO data base as a resource for their development of a probabilistic safety assessment (PSA) for the MONJU fast breeder reactor now under construction. The meeting was held to discuss: (a) progress in FY 1989, (b) res… more
Date: February 7, 1991
Creator: Smith, M.S. & Manneschmidt, J.F.
Partner: UNT Libraries Government Documents Department
open access

Reactor Restart Division trend analysis report, second quarter 1991

Description: This document provides a trend analysis for the Savannah River Reactor Restart Program. The data contained in this report is comprised of Nonconformance Report (NCR), Surveillance Reports, and Corrective Action Reports (CAR). The data trended now includes six quarters and provides the capability of looking at changing patterns in the various performance categories over time.
Date: October 7, 1991
Creator: Castles, R. B.
Partner: UNT Libraries Government Documents Department
open access

The Savannah River Site`s Groundwater Monitoring Program, second quarter 1990

Description: The Environmental Protection Department/Environmental Monitoring Section (EPD/EMS) administers the Savannah River Site`s (SRS) Groundwater Monitoring Program. During second quarter 1990 (April through June) EPD/EMS conducted routine sampling of monitoring wells and drinking water locations. EPD/EMS established two sets of flagging criteria in 1986 to assist in the management of sample results. The flagging criteria aid personnel in sample scheduling, interpretation of data, and trend identifica… more
Date: February 7, 1991
Partner: UNT Libraries Government Documents Department
open access

Working Group 7.1 on environmental transport, US-USSR Joint Coordinating Committee on Civilian Nuclear Reactor Safety. Progress report update

Description: This report contains brief summaries of the status of projects of the Environmental Transport Group of the US-USSR Joint Coordinating Committee of Civilian Nuclear Reactor Safety. Projects reported on include: Management and Administration; Atmospheric Transport; Resuspension; External Dose; Terrestrial Food Chains; Aquatic Food Chains; Hydrological Transport; and Intercalibration
Date: September 7, 1991
Creator: Anspaugh, L. R. & Hendrickson, S. M.
Partner: UNT Libraries Government Documents Department
open access

[Report: Dallas Com]

Description: A report on Ron Ruggless' commercial property including estimated value and tax information.
Date: January 7, 1991
Partner: UNT Libraries Special Collections
open access

D to A Line Tuning

Description: Although in the past the D to A line was well tuned, through the course of years of operations it has not kept up with changes in the Debuncher and Accumulator. The beam is now steered well off center in SEM's 806 and 807, and is possibly scraping in TQ5. In addition, there is some evidence that the beta functions are not matched, causing emmitance blowup of the beam. As the cycle time of the main ring has decreased these limitations have become a significant limitation to the stacking rate.
Date: May 7, 1991
Creator: Halling, Mike
Partner: UNT Libraries Government Documents Department
open access

Structural studies of the metal-rich region in the ternary Ta-Nb-S system

Description: Six new solid solution type compounds have been prepared using high temperature techniques and characterized by means of single crystal x-ray techniques during a study of the metal-rich region of the ternary Ta-Nb-S system. The structures of Nb{sub x}Ta{sub 11-x}S{sub 4} are reminiscent of niobium-rich sulfides, rather than of tantalum-rich sulfides. The coordinations of sulfur are capped trigonal prismatic while the metal coordinations are capped distorted cubic prismatic for Nb{sub x}Ta{sub 1… more
Date: October 7, 1991
Creator: Yao, Xiaoqiang.
Partner: UNT Libraries Government Documents Department
open access

Systematic preparation of selective heterogeneous catalysts. Final report, September 1, 1984--August 31, 1991

Description: The Single Turnover (STO) procedure, involving pulses of hydrogen and 1-butene, was developed for studying the types of active sites present on supported metal catalysts. The STO procedure was used to study direct saturated sites and other topics. Frontier molecular orbital studies were also made.
Date: November 7, 1991
Creator: Augustine, R. L.
Partner: UNT Libraries Government Documents Department
open access

(Limiting the greenhouse effect)

Description: Traveler attended the Dahlem Research Conference organized by the Freien Universitat, Berlin. The subject of the conference was Limiting the Greenhouse Effect: Options for Controlling Atmospheric CO{sub 2} Accumulation. Like all Dahlem workshops, this was a meeting of scientific experts, although the disciplines represented were broader than usual, ranging across anthropology, economics, international relations, forestry, engineering, and atmospheric chemistry. Participation by scientists from … more
Date: January 7, 1991
Creator: Rayner, S.
Partner: UNT Libraries Government Documents Department
open access

Nucleon-Antinucleon Annihilation in Chiral Soliton Model

Description: We investigate annihilation process of nucleons in the chiral soliton model by the path integral method. A soliton-antisoliton pair is shown to decay into mesons at range of about 1fm, defined by the S{bar S} potential. Contribution of the annihilation channel to the elastic scattering is discussed.
Date: September 7, 1991
Creator: Musakhanov, M. M. & Musatov, I. V.
Partner: UNT Libraries Government Documents Department
open access

Japan's World War II Reparations: A Fact Sheet

Description: Japan's war reparations following World War II came in two stages. In the first, 1946-1949, U.S. and allied governments arranged for U.S. occupation authorities to ship about $160 million in Japanese industrial equipment to China, the Philippines, Indonesia, and the British colonies in East Asia.
Date: March 7, 1991
Creator: Niksch, Larry A.
Partner: UNT Libraries Government Documents Department
open access

Nucleon-antinucleon annihilation in chiral soliton model

Description: We investigate annihilation process of nucleons in the chiral soliton model by the path integral method. A soliton-antisoliton pair is shown to decay into mesons at range of about 1fm, defined by the S{bar S} potential. Contribution of the annihilation channel to the elastic scattering is discussed.
Date: September 7, 1991
Creator: Musakhanov, M. M. & Musatov, I. V.
Partner: UNT Libraries Government Documents Department
open access

The Savannah River Site`s groundwater monitoring program: 1990 sampling schedule

Description: This schedule provides a final record of the 1990 sampling schedule for the SRS groundwater monitoring program conducted by the Environmental Protection Department/Environmental Section (EPD/EMS). It includes all the wells monitored by EPD/EMS at SRS during 1990 and identifies the constituents sampled, the sampling frequency, and the reasons for sampling. Sampling requests are incorporated into the schedule throughout the year. Drafts of the schedule are produced and revised quarterly.
Date: February 7, 1991
Creator: Rogers, C.D.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen