45 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Perry, D."  
Results: 1 - 24 next
open access

Calculated neutron spectrum from 800-MeV protons incident on a copper beam stop

Description: A Monte Carlo calculation was performed to obtain the neutron spectrum generated by 800-MeV protons incident on the LAMPF main copper beam stop. The total flux is calculated to be of the order of 10$sup 13$ n/cm$sup 2$-sec-mA at full-beam intensity of 1 mA, with flux spectra calculated for angles of 20$sup 0$, 30$sup 0$, 60$sup 0$, 90$sup 0$, 120$sup 0$, and 150$sup 0$. (auth)
Date: October 1, 1975
Creator: Perry, D.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

PDP 11/03 based, dual-parameter data acquisition system

Description: A system was built using a PDP-11/03 to acquire nuclear spectroscopic data either as dual-parameter coincidence data or as two single-parameter spectra. Two nuclear spectroscopy ADC's are connected through a locally built interface to a PDP-11/03. The computer will either store the data from the ADC's as two independent spectra or store the data in two-parameter list format depending on the program used. Some initial examination of the dual-parameter data can be done to eliminate bad points fro… more
Date: January 1, 1977
Creator: Giesler, G. C. & Perry, D. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Philosophy of a computer-automated counting system

Description: The LAMPF Nuclear Chemistry computer system is designed to provide both real-time control of data acquisition and facilities for data processing for a large variety of users. It is a PDP-11/34 connected to a parallel CAMAC branch highway as well as a large variety of peripherals. The philosophy for the design of this system is discussed; such points as use of the computer for control only versus direct data acquisition by the computer, why a CAMAC system was chosen, and the advantages and disad… more
Date: January 1, 1979
Creator: Perry, D. G. & Giesler, G. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Future directions of C3 research at DARPA (Defense Advanced Research Projects Agency)

Description: Research into C3 related problems is a major effort of the Information Science and Technology Office of the Defense Advanced Research Projects Agency. The major thrusts of projects is in the area of future, high-risk efforts, often resulting in the development of a conceptual model or prototype. Some of these prototypes are then further developed to provide an infrastructure for future research. The programs can be divided into two groups: base technology research programs and testbed programs.… more
Date: January 1, 1987
Creator: Perry, D.G. & Dahmann, J.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Who's protecting you from hazardous substances

Description: Employee accidents, life endangering spills of harmful chemicals, toxic materials leaching into drinking water, polluted air, crippling side effects of wonder metals and products, and human and animal deaths made it apparent that in order to protect and preserve the community and the environment, the community needed to be aware/knowledgeable of chemical uses and related possible dangers, i.e., it was time to establish rules and regulations for the use and disposal of hazardous substances and c… more
Date: January 1, 1993
Creator: Perry, D.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Molecular Eigenstate Spectroscopy: Application to the Intramolecular Dynamics of Some Polyatomic Molecules in the 3000 to 7000 Cm-1 Region. Progress Report, September 1, 1990--January 31, 1993

Description: This project uses high resolution infrared spectroscopy to probe the mechanism of intramolecular vibrational redistribution (IVR) in ultracold isolated polyatomic molecules. Single resonance spectra of 1-butyne and ethanol show that qualitatively different coupling mechanisms dominate in each case anharmonic and Coriolis coupling respectively. A random matrix method for simulation of these spectra has been implemented which allows estimation of the strength of the various mechanisms at each sta… more
Date: January 1, 1993
Creator: Perry, D. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Who`s protecting you from hazardous substances?

Description: Employee accidents, life endangering spills of harmful chemicals, toxic materials leaching into drinking water, polluted air, crippling side effects of wonder metals and products, and human and animal deaths made it apparent that in order to protect and preserve the community and the environment, the community needed to be aware/knowledgeable of chemical uses and related possible dangers, i.e., it was time to establish rules and regulations for the use and disposal of hazardous substances and c… more
Date: May 1, 1993
Creator: Perry, D. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Molecular Eigenstate Spectroscopy: Application to the Intramolecular Dynamics of Some Polyatomic Molecules in the 3000 to 7000 Cm-1 Region: Progress Report for Period September 1, 1990 -- January 31, 1993.

Description: This project uses high resolution infrared spectroscopy to probe the mechanism of intramolecular vibrational redistribution (IVR) in ultracold isolated polyatomic molecules. Single resonance spectra of 1-butyne and ethanol show that qualitatively different coupling mechanisms dominate in each case anharmonic and Coriolis coupling respectively. A random matrix method for simulation of these spectra has been implemented which allows estimation of the strength of the various mechanisms at each sta… more
Date: January 1, 1993
Creator: Perry, D. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SUMMAR OF DISCUSSIONS OF USES OF THE ADVANCED LIGHT SOURCE (ALS)FOR EARTH SCIENCES RESEARCH: WORKSHOP REPORT OF THE ALS USERS'ASSOCIATION ANNUAL MEETING, LAWRENCE BERKELEY LABORATORY, BERKELEY,CA,JUNE 2-3, 1988

Description: A workshop to discuss opportunities for research using the Advanced Light Source (ALS) was held as a part of the first annual ALS users meeting at the Berkeley Convention Center, Berkeley, California, June 2--3, 1988. The participants were from university and governmental laboratories, and some of those attending had had experience using synchrotron light sources. Because the Earth Science interests had not been voiced or considered in previous workshops or meetings of the ALS groups, it was th… more
Date: September 1, 1988
Creator: Dillard, J.; Wallenberg, H. & Perry, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of the mechanism of catalytic reactions with catalysts effective in the gasification of carbon solids and the oxidative coupling of methane. Quarterly report, October 1--December 31, 1993

Description: This report covers the time period from October 1 through December 31, 1993. A description of tasks for fiscal year 1994 is included in this report. Highlights and progress of work performed during this quarter is reported in (a) catalytic steam gasification of coals and cokes; (b) oxidative coupling of methane; and (c) synthesis and characterization of catalysts. Attached to this report is a copy of a manuscript submitted to Proceeding of Fuels Technology Contractors Meeting {open_quotes}Stead… more
Date: December 1, 1993
Creator: Heinemann, H.; Iglesia, E. & Perry, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of the mechanism of catalytic reactions with catalysts effective in the gasification of carbon solids and the oxidative coupling of methane. Quarterly report, 1 January--31 March 1994

Description: This report describes work in progress on three tasks: (1) Catalytic steam gasification of coals and cokes; (2) Oxidative coupling of methane; and (3) Synthesis and characterization of catalysts. Since Task 1 is complete, a final report has been written. This report describes membrane reactors, cyclic methane conversion reactors, theoretical descriptions of reaction-separation schemes, and time-space relationships in cyclic and membrane reactors, all subtasks of Task 2. Initial studies under Ta… more
Date: March 1, 1994
Creator: Iglesia, E.; Heinemann, H. & Perry, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of the mechanism of catalytic reactions with catalysts effective in the gasification of carbon solids and the oxidative coupling of methane. Quarterly report, April 1, 1994--June 30, 1994

Description: Catalytic gasification work has been completed and no other work is planned in the general area of catalytic gasification of coals and chars has operated without a post-doctoral fellow because of budget limitations during the first two quarters of FY1994. Dr. S. Sundararajan joined the group in April 1994 and will be assigned to the project throughout the remaining of the fiscal year. Results published by Hamakawa, et al. in The Journal of the Electrochemical Society have confirmed the concept … more
Date: June 1, 1994
Creator: Iglesia, E.; Perry, D. L. & Heinemann, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of the mechanism of catalytic reactions with catalysts effective in the gasification of carbon solids and the oxidative coupling of methane. Quarterly report, January 1, 1995--March 31, 1995

Description: The synthesis of ethane and ethylene from methane and oxygen will be carried out in novel hydrogen transport inorganic membranes and in cyclic reactors in order to prevent undesirable secondary reactions of C{sub 2} molecules to CO and CO{sub 2}. Neither inorganic membrane reactors nor cyclic tubular reactors are presently used in commercial processes. Their application to catalytic reactions represents a novel application of engineering and solid-state chemistry concepts to catalytic reactions… more
Date: March 1, 1995
Creator: Iglesia, E.; Perry, D.L. & Heinemann, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Steady-state and transient catalytic oxidation and coupling of methane

Description: Four papers have been published on mechanisms and site requirements for oxidative coupling of methane to ethane and ethylene and on synthesis of thin catalytic films during fiscal 1993. These publications also describe a unique inhibiting effect of water on the rate of undesired full oxidation pathways during oxidative coupling. Five quarterly reports have been written and submitted during the covered period. These findings and recently reported models of surface and gas phase reactions of meth… more
Date: December 31, 1993
Creator: Heinemann, H.; Iglesia, E. & Perry, D. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of the mechanism of catalytic reactions with catalysts effective in the gasification of carbon solids and the oxidative coupling of methane. Quarterly report, July 1, 1994--September 30, 1994

Description: Research continued on the study of catalysts and membrane materials involved in the oxidative coupling of methane and coal gasification processes. Membranes studied and fabricated included Sr-Zr-Y-O, Sr-Zr-Y, and Sr-Ce-Y-O systems.
Date: September 1, 1994
Creator: Iglesia, E.; Perry, D.L. & Heinemann, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of the mechanism of catalytic reactions with catalysts effective in the gasification of carbon solids and the oxidative coupling of methane. Quarterly report, October 1, 1994--December 31, 1994

Description: This report describes research on the oxidative coupling of methane and catalysts involved in coal gasification. Topics include methane pyrolysis and catalysts, and magnetic properties of the coal gasification catalyst Ca-Ni-K-O system.
Date: December 1, 1994
Creator: Iglesia, E.; Perry, D.L. & Heinemann, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Steady-state and transient catalytic oxidation and coupling of methane

Description: This project addresses the conversion of methane from natural gas into ethane, ethylene and higher hydrocarbons. Our research explores the mechanistic and practical implications of carrying out the methane oxidative coupling reaction in reactor designs other than conventional packed-beds with co-fed reactants. These alternate reactor designs are needed to prevent the full oxidation of methane, which limits C{sub 2}, yields in methane oxidative coupling reactions. The research strategy focuses o… more
Date: June 1, 1995
Creator: Iglesia, E.; Perry, D.L. & Heinemann, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Monitor for detecting nuclear waste leakage in a subsurface repository

Description: The remote fiber fluorimetric portion of the program is slightly ahead of schedule and proceeding well technically. Proof of principle has been demonstrated over a 0.2 km path length using an organic tracer material. Performance and design calculations have been made for the fiber optic components of the system. Optimized fibers have been ordered and special jigs and optical couplings are presently being fabricated. Progress on the high-sensitivity analyzer using coprecipitation techniques has … more
Date: November 5, 1980
Creator: Klainer, S.; Hirschfeld, T.; Bowman, H.; Milanovich, F.; Perry, D. & Johnson, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of the mechanism of catalytic reactions with catalysts effective in the gasification of carbon solids and the oxidative coupling of methane. Quarterly report, April 1, 1992--June 30, 1992

Description: Work continued on the catalytic conversion of methane to produce C{sub 2}, C{sub 3},and C{sub 4} hydrocarbons. Progress is reported on the catalytic effects of Lithium Oxide and Magnesium Oxide catalysts.
Date: June 1, 1992
Creator: Heinemann, H.; Somorjai, G. A. & Perry, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of the mechanism of catalytic reactions with catalysts effective in the gasification of carbon solids and the oxidative coupling of methane. Quarterly report, January 1, 1993--March 31, 1993

Description: Work continued on the development of catalysts for the steam gasification of chars and for the oxidative coupling of methane. Testing of the catalysts Ni-Ca-K-oxides and Co-Ca-K-oxides are described for gasification research; results of the testing of a Co-Mg-oxide catalysts for methane conversion are also described.
Date: March 1, 1993
Creator: Heinemann, H.; Somorjai, G. A. & Perry, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of the mechanism of catalytic reactions with catalysts effective in the gasification of carbon solids and the oxidative coupling of methane. Quarterly report, January 1--March 31, 1992

Description: Work will continue on the oxidative coupling reaction of methane over ternary oxide catalysts to produce C{sub 2}, C{sub 3} and C{sub 4} hydrocarbons and particularly olefins with high selectivity. The work which has shown that close to 100% selectivity can be obtained has received wide attention and has resulted in collaborative efforts with industry (CRADA) towards the development of a commercial process. An immediate purpose of additional work is to increase the conversion without diminishin… more
Date: March 1, 1992
Creator: Heinemann, H.; Somorjai, G. A. & Perry, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of the mechanism of catalytic reactions with catalysts effective in the gasification of carbon solids and the oxidative coupling of methane

Description: Work will continue on the oxidative coupling reaction of methane over ternary oxide catalysts to produce C{sub 2}, C{sub 3} and C{sub 4} hydrocarbons and particularly olefins with high selectivity. The work which has shown that close to 100% selectivity can be obtained has received wide attention and has resulted in collaborative efforts with industry (CRADA) towards the development of a commercial process. An immediate purpose of additional work is to increase the conversion without diminishin… more
Date: March 1, 1992
Creator: Heinemann, H.; Somorjai, G. A. & Perry, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of the mechanism of catalytic reactions with catalysts effective in the gasification of carbon solids and the oxidative coupling of methane. Quarterly report, July 1--September 30, 1992

Description: Work will continue on the oxidative coupling reaction of methane over ternary oxide catalysts to produce C{sub 2}, C{sub 3} and C{sub 4} hydrocarbons and Particularly Olefins with high selectivity. The work which has shown that close to 100% selectivity can be obtained has received wide attention and has resulted in collaborative efforts with industry (CRADA) towards the development of a commercial process. An immediate purpose of additional work is to increase the conversion without diminishin… more
Date: September 1, 1992
Creator: Heinemann, H.; Somorjai, G. A. & Perry, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen