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ON THE MECHANISM OF YIELDING AND FLOW IN IRON

Description: The activation energy, activation volume, snd frequency factor were evaluated for yielding (delay time for yielding, upper yield stress, lower yield stress, and Luders band propagation) and flow (friction stress, flow stress, and dislocation mobility) for various irons and steels from data in the literature. It was found that the values of these flow parameters and their stress dependence were the same, within experimental error, for both yielding and flow, and for all the materials considered. This suggests that either the same dislocation mechanism is controlling in every case, or that one or more mechanisms possees approximately the same values for these parameters. The dislocation mechanism for which there was closest agreement between theoretical calculations snd experimental data was overcoming the Peierls stress. On the basis of the available experimental data and the present analysis, it is suggested that the upper and lower yield stresses in iron and steel may represent the sudden generation of a large number of dislocations by the double cross-slip mechanism of Koehler and Orowan, rather than the breaking away from a Cottrell atmosphere. (auth)
Date: May 30, 1961
Creator: Conrad, H
Partner: UNT Libraries Government Documents Department

FY2013 Budget Documents: Internet and GPO Availability

Description: This report provides brief descriptions of the budget volumes and related documents, together with Internet addresses, Government Printing Office (GPO) stock numbers, and prices for obtaining print copies of these publications. It also explains how to find the locations of government depository libraries, which can provide both printed copies for reference use and Internet access to the online versions.
Date: April 2, 2012
Creator: Nagel, Jared Conrad
Partner: UNT Libraries Government Documents Department

The trumpet in chamber music during the 20th century

Description: The purpose of this thesis is to trace the history of the trumpet in chamber music through the first half of the 20th century. It aims to discuss the technical advances in the instrument and demonstrate the importance of the trumpet in this medium. Chamber music is defined, in this thesis, as all serious instrumental music for two or more instruments played with one instrument to a part. The selections have been chosen on the basis of recognized merit of the composer, the variety of instrumentation, and the availability of music.
Date: August 1958
Creator: Bauschka, Conrad Romuald
Partner: UNT Libraries

Network model of free convection within internally heated porous media. [LMFBR]

Description: A hypothetical core-disruptive accident (HCDA) in a liquid metal fast breeder reactor (LMFBR) may result in the formation of an internally heated debris bed. Considerable attention has been given to postulated mechanisms by which such beds may be cooled. It is the purpose of the work described to demonstrate a method for computing the heat transfer from such a bed to the overlying sodium pool due to single-phase, free convection.
Date: January 1, 1977
Creator: Conrad, P.W.
Partner: UNT Libraries Government Documents Department

Past Government Shutdowns: Key Resources

Description: This report provides an annotated list of historical documents and other resources related to several past government shutdowns. The report also includes links to full-text documents when available. There is limited information and guidance related to shutdowns, and it is difficult to predict what might happen in the event of one, but information about past events may help inform future deliberations.
Date: April 8, 2011
Creator: Nagel, Jared Conrad & Murray, Justin
Partner: UNT Libraries Government Documents Department

Past Government Shutdowns: Key Resources

Description: This report provides an annotated list of historical documents and other resources related to several past government shutdowns. The report also includes links to full-text documents when available. There is limited information and guidance related to shutdowns, and it is difficult to predict what might happen in the event of one, but information about past events may help inform future deliberations.
Date: November 25, 2013
Creator: Nagel, Jared Conrad & Murray, Justin
Partner: UNT Libraries Government Documents Department

A Set of Six

Description: Collection of fictional short stories written by Joseph Conrad including "A Romantic Tale" (Gaspar Ruiz), "An Ironic Tale" (The Informer), "An Indignant Tale" (The Brute), "A Desperate Tale" (An Anarchist), "A Military Tale" (The Duel), and "A Pathetic Tale" (Il Conde). The publisher's catalog is printed at the end of the book.
Date: 1908
Creator: Joseph Conrad, 1857-1924
Partner: UNT Libraries Special Collections

Engineering Task Plan for a vapor treatment system on Tank 241-C-103

Description: This Engineering Task Plan describes tasks and responsibilities for the design, fabrication, test, and installation of a vapor treatment system (mixing system) on Tank 241-C-103. The mixing system is to be installed downstream of the breather filter and will use a mixing blower to reduce the chemical concentrations to below allowable levels.
Date: March 9, 1995
Creator: Conrad, R.B.
Partner: UNT Libraries Government Documents Department

TOWARDS A NEW CLASS OF MESOPOROUS MATERIALS FOR APPLICATIONS IN PETROLEUM REFINING

Description: This project focuses on the synthesis of mesoporous aluminophosphates, silicates and aluminosilicates as catalysts for applications in the conversion of large petroleum feedstock compounds to useful middle distillates and naphtha transportation fuels. Summarized herein is our research progress from September 1, 2003, to August 31, 2004. In previous reports it was demonstrated that mesoporous aluminophosphates with neutral framework (containing Al, P and O) could be synthesized, but their thermal stabilities were limited. In general, the materials' pore structure collapsed when calcined at 500-550 C in air or extracted in ethanol/HCl mixture to remove the surfactants, which were used as synthesis templates. New methods to improve the thermal stability of the materials needed to be explored. It was conceived that by adding divalent metals cations, such as Mg and Co, not only that the acid sites would be created by balancing the negatively charged framework (balanced by H{sup +}), but the thermal stability of the materials would be improved. In addition, methods to facilitate the interaction of hydrocarbon substrates with acid sites within the mesoporous are also needed. One concept towards improving this was to incorporate organic functional groups within or attached to the otherwise purely inorganic aluminophosphate (containing Co or Mg) or aluminosilicate pore walls of the mesopores. In the last report we detailed that mesoporous organosilicates were synthesized using block copolymer under acid conditions containing silica and phenylene (-C{sub 6}H{sub 4}-). Materials prepared with phenylene group among the silica pore walls was found to be thermally stable up to 550 C which is almost 100 C higher than the temperature used for the mild hydrocracking of petroleum. It was also highlighted that this area was the subject of recent intense research activities by other researchers. Building on precedence of the last report and on the results of other researchers, ...
Date: March 21, 2005
Creator: Ingram, Conrad & Mitchell, Mark
Partner: UNT Libraries Government Documents Department

IMPROVED CATALYSTS FOR HEAVY OIL UPGRADING BASED ON ZEOLITE Y NANOPARTICLES ENCAPSULATED IN STABLE NANOPOROUS HOSTS

Description: The focus of this project is to improve the catalytic performance of zeolite Y for heavy petroleum hydrocracking by synthesizing nanoparticles of the zeolite ({approx}20-30 nm) inside nanoporous silicate or aluminosilicate hosts of similar pore diameters. The encapsulated zeolite nanoparticles are expected to possess pores of reduced diffusional path lengths, hence hydrocarbon substrates will diffuse in, are converted and the products quickly diffused out. This is expected to prevent over-reaction, hence minimizing pore blockage and active sites deactivation. In this phase of the project, research activities were focused on refining procedures to: (a) improve the synthesis of ordered, high surface area nanoporous silica, such as SBA-15, with expanded pore size using trimethylbenzene as additive to the parent SBA-15 synthesis mixture; and (b) reduce the particle size of zeolite Y such that they can be effectively incorporated into the nanoporous silicas. The synthesis of high surface ordered nanoporous silica containing enlarged pores of diameter of 25 nm (larger than the standard size of 8.4 nm) using trimethylbenzene as a pore size expander was accomplished. The synthesis of zeolite Y nanoparticles with median pore size of approximately 50 nm (smaller than the 80 nm typically obtained with TMAOH) using combined TMABr/TMAOH as organic additives was also accomplished.
Date: June 30, 2004
Creator: Ingram, Conrad & Mitchell, Mark
Partner: UNT Libraries Government Documents Department

IMPROVED CATALYSTS FOR HEAVY OIL UPGRADING BASED ON ZEOLITE Y NANOPARTICLES ENCAPSULATED STABLE NANOPOROUS HOST

Description: The objectives of this project are to synthesis nanocrystals of highly acidic zeolite Y, encapsulate them within the channels of mesoporous (nanoporous) silicates or nanoporous organosilicates and evaluate the ''zeolite Y/Nanoporous host'' composites as catalysts for the upgrading of heavy petroleum feedstocks. Our results to date are summarized as follows. The synthesis of high surface ordered nanoporous silica of expanded pore diameter of 25 nm (larger than the standard size of 8.4 nm) using trimethylbenzene as a pore size expander was accomplished. The synthesis of zeolite Y nanoparticles with median pore size of approximately 50 nm (smaller than the 80 nm typically obtained with TMAOH) using combined TMABr/TMAOH as organic additives was also accomplished. The successful synthesis of zeoliteY/Nanoporous host composite materials by sequential combination of zeolite precursors and nanoporous material precursor mixtures was implied based on results from various characterization techniques such as X-Ray diffraction, infrared spectra, thermal analysis, porosimetry data. The resulting materials showed pore sizes up to 11 nm, and infrared band at 570 cm{sup -1} suggesting the presence of both phases. Work in the immediate future will be focused on the following three areas: (1) Further characterization of all-silica and aluminosilicate mesoporous materials with expanded pore sizes up to 30 nm will continue; (2) Research efforts to reduce the average particle size of zeolite nanoparticles down to 35-30 nm will continue; (3) Further synthesis of polymer-SBA15 nanocomposites will be conducted by changing the amount and chemistry of the zeolitic precursors added; and (4) Investigation on the catalytic properties of the materials using probe catalytic reactions (such as cumene cracking), followed by catalytic testing for heavy oil conversion.
Date: March 21, 2005
Creator: Ingram, Conrad & Mitchell, Mark
Partner: UNT Libraries Government Documents Department

A NEW CLASS OF MESOPOROUS ALUMINOPHOSPHATES FOR APPLICATION IN PERTOLEUM REFINING

Description: This project focuses on the synthesis of mesoporous aluminophosphate and aluminosilicates as catalysts for application in the conversion of large petroleum feedstock compounds to useful middle distillates and naphtha transportation fuels. Summarized herein, is our research progress for September 1, 2001 to August 31, 2002. The synthesis of aluminophosphates in the presence of nonionic surfactants and block co-polymers were explored over a wide range of synthesis variables such as temperature, Al/P ratio, pH and surfactants/polymer concentrations. In most cases, the resulting products were found to be amorphous. A partially ordered aluminophosphate mesophase was obtained in the presence of Brij 56 non-ionic surfactant. Further characterization to determine the phase type (e.g. hexagonal lamellar or cubic) of this product is pending. The amorphous nature of the products obtained using these classes of surfactants are in contrast to highly ordered aluminophosphates mesophases obtained in the presence of cationic quaternary ammonium surfactants, such as cetyltrimethylammonium detailed in a previous report. The synthesis of pure-silica and aluminosilicate mesophases of different type and quality were also conducted over a wide range of variables such as temperature, Si/Al ratio, pH and surfactants/polymer concentrations. However characterization of the phase type and quality of the materials produced is pending due to a severe and extended malfunction of the X-Ray Diffractometer. Nitrogen porosimetry of selected calcined samples showed various absorption isotherm with some samples showing type IV with a large step in the mesoporous range. Surface area of the samples varied and maximized at approximately 1000 m{sup 2}/g, which is typically reported for materials of this type. Further characterization of the sample will be conducted following repair of the X-Ray Diffractometer.
Date: February 12, 2003
Creator: Conrad Ingram, Ph.D.
Partner: UNT Libraries Government Documents Department

Preliminary Analysis of Performance of Turbojet Engines Used as Pumps for Boundary-Layer Control

Description: Memorandum presenting a determination of the effects on engine performance of using turbojet engines for boundary-layer control by suction at the engine inlet or by bleeding air from the compressor outlet for three current production engines. Results regarding bleed, suction, and variable-area turbine are provided.
Date: August 16, 1955
Creator: Conrad, E. William
Partner: UNT Libraries Government Documents Department

Investigation of Static Longitudinal Stability Characteristics at Transonic Speeds of 30 Degree Sweptback Wing in Wing-Body Configuration With and Without Horizontal Tail

Description: Memorandum presenting an investigation of the static longitudinal stability characteristics of two wings of different construction and slightly different flexibilities in the 16-foot transonic tunnel. The wings had the same external dimensions but one had a steel construction and the other was made of plastic reinforced by a steel core.
Date: April 22, 1957
Creator: Willis, Conrad M.
Partner: UNT Libraries Government Documents Department

Area G Perimeter Surface-Soil and Single-Stage Water Sampling: Environmental Surveillance for Fiscal Years 1996 and 1997, Group ESH-19

Description: Area Gin Technical Area 54, has been the principal facility at Los Alamos National Laboratory for the storage and disposal of low-level, solid mixed, and transuranic radioactive waste since 1957. Soil samples were analyzed for tritium, isotopic plutonium, americium-241, and cesium-137. Thirteen metals-silver, arsenic, barium, beryllium, cadmium, chromium, mercury, nickel, lead, antimony, selenium, thallium and zinc-were analyzed on filtered-sediment fractions of the single-stage samples using standard analytical chemistry techniques. During the two years of sampling discussed in this report elevated levels of tritium (as high as 716,000 pCi/L) in soil were found for sampling sites adjacent to the tritium burial shafts located on the south- central perimeter of Area G. Additionally, tritium concentrations in soil as high as 38,300 pCi/L were detected adjacent to the TRU pads in the northeast comer of Area G. Plutonium-238 activities in FY96 soils ranged from 0.001-2.866 pCi/g, with an average concentration of 0.336& 0.734 pCdg. Pu-238 activities in FY97 soils ranged from 0.002-4.890 pCi/g, with an average concentration of 0.437 & 0.928 pCdg. Pu-239 activities in FY96 soils ranged from 0.009 to 1.62 pCdg, with an average of 0.177- 0.297 pCdg. Pu-239 activities in FY97 soils ranged from 0.005 to 1.71 pCi/g, with an average of 0.290- 0.415 pCi/g. The locations of elevated plutonium readings were consistent with the history of plutonium disposal at Area G. The two areas of elevated Am-241 activity reflected the elevated activities found for plutonium, the average values for Am-241 on soils were 0.6-2.07 pCi/g, and 0.10-0.14 pCi/g respectively for samples collected in FY96 and FY97. CS-137 activities in soils had average values of 0.33 pCi/g, and 0.28 pCi/g respectively for samples collected in FY96 and 97. There was no perimeter area where soil concentrations of CS-137 were significantly elevated.
Date: October 1, 1998
Creator: Childs, Marquis & Conrad, Ron
Partner: UNT Libraries Government Documents Department

Federal Disaster Assistance after Hurricanes Katrina, Rita, Wilma, Gustav, and Ike

Description: Report that provides information on federal financial assistance provided to the Gulf States after major disasters were declared in Alabama, Florida, Louisiana, Mississippi, and Texas in response to the widespread destruction that resulted from Hurricanes Katrina, Rita, and Wilma in 2005 and Hurricanes Gustav and Ike in 2008. This includes a brief summary of each hurricane and a discussion concerning federal to state cost-shares.
Date: July 5, 2013
Creator: Lindsay, Bruce R. & Nagel, Jared Conrad
Partner: UNT Libraries Government Documents Department

Phase I Archaeological Investigation Cultural Resources Survey, Hawaii Geothermal Project, Makawao and Hana Districts, South Shore of Maui, Hawaii (DRAFT )

Description: This report details the archaeological investigation of a 200 foot wide sample corridor extending approximately 9 miles along the southern portion of Maui within the present districts of Hana and Makawao. A total of 51 archaeological sites encompassing 233 surface features were documented. A GPS receiver was used to accurately and precisely plot locations for each of the documented sites. Analysis of the locational information suggests that archaeological sites are abundant throughout the region and only become scarce where vegetation has been bulldozed for ranching activities. At the sea-land transition points for the underwater transmission cable, both Ahihi Bay and Huakini Bay are subjected to seasonal erosion and redeposition of their boulder shorelines. The corridor at the Ahihi Bay transition point runs through the Moanakala Village Complex which is an archaeological site on the State Register of Historic Places within a State Natural Area Reserve. Numerous other potentially significant archaeological sites lie within the project corridor. It is likely that rerouting of the corridor in an attempt to avoid known sites would result in other undocumented sites located outside the sample corridor being impacted. Given the distribution of archaeological sites, there is no alternative route that can be suggested that is likely to avoid encountering sites. A total of twelve charcoal samples were obtained for potential taxon identification and radiocarbon analysis. Four of these samples were subsequently submitted for dating and species identification. Bird bone from various locations within a lava tube were collected for identification. Sediment samples for subsequent pollen analysis were obtained from within two lava tubes. With these three sources of information it is hoped that paleoenvironmental data can be recovered that will enable a better understanding of the setting for Hawaiian habitation of the area. A small test unit was excavated at one habitation site. Charcoal, ...
Date: March 1, 1994
Creator: Erkelens, Conrad
Partner: UNT Libraries Government Documents Department

IMPROVED CATALYSTS FOR HEAVY OIL UPGRADING BASED ON ZEOLITE Y NANOPARTICLES ENCAPSULATED IN STABLE NANOPOROUS HOSTS

Description: The focus of this project is to improve the catalytic performance of zeolite Y for petroleum hydrocracking by synthesizing nanoparticles of the zeolite ({approx}20-25 nm) inside nanoporous silicate or aluminosilicate hosts. The encapsulated zeolite nanoparticles are expected to possess reduced diffusional path lengths, hence hydrocarbon substrates will diffuse in, are converted and the products quickly diffused out. This is expected to prevent over-reaction and the blocking of the zeolite pores and active sites will be minimized. In this phase of the project, procedures for the synthesis of ordered nanoporous silica, such as SBA-15, using block copolymers and nonionic surfactant were successful reproduced. Expansion of the pores sizes of the nanoporous silica using trimethylbenzene is suggested based on shift in the major X-Ray Diffraction peak in the products to lower 2 angles compared with the parent SBA-15 material. The synthesis of ordered nanoporous materials with aluminum incorporated in the predominantly silicate framework was attempted but is not yet successful, and the procedures needs will be repeated and modified as necessary. Nanoparticles of zeolite Y of particle sizes in the range 40 nm to 120 nm were synthesized in the presence of TMAOH as the particle size controlling additive.
Date: September 3, 2003
Creator: Ingram, Conrad
Partner: UNT Libraries Government Documents Department

Toward exascale computing through neuromorphic approaches.

Description: While individual neurons function at relatively low firing rates, naturally-occurring nervous systems not only surpass manmade systems in computing power, but accomplish this feat using relatively little energy. It is asserted that the next major breakthrough in computing power will be achieved through application of neuromorphic approaches that mimic the mechanisms by which neural systems integrate and store massive quantities of data for real-time decision making. The proposed LDRD provides a conceptual foundation for SNL to make unique advances toward exascale computing. First, a team consisting of experts from the HPC, MESA, cognitive and biological sciences and nanotechnology domains will be coordinated to conduct an exercise with the outcome being a concept for applying neuromorphic computing to achieve exascale computing. It is anticipated that this concept will involve innovative extension and integration of SNL capabilities in MicroFab, material sciences, high-performance computing, and modeling and simulation of neural processes/systems.
Date: September 1, 2010
Creator: James, Conrad D.
Partner: UNT Libraries Government Documents Department

Measuring the strategic value of information technology investments

Description: Value is often perceived differently by the proponents of new information technologies and those who allocate resources and define priorities. Such differences often become a roadblock to meeting true business needs. Project justifications regularly rely on calculated cost savings, which rarely measure the full benefit of new technologies. In fact, if cost savings provide a complete picture, then the organization is probably just automating routine clerical operations and has abandoned efforts that would provide significant strategic value. Strategic value is not limited to financial calculations, but includes quality, time and risk criteria. This paper describes approaches for measuring strategic value that can provide organizations with proven techniques to improve performance, reengineer processes, benchmark performance against other suppliers, identify outsourcing opportunities, or defend themselves from pressures to outsource. Many organizations respond to tightening budgets by cutting overhead. These measurement approaches can demonstrate how overhead is critical to organizational effectiveness and how cost savings can be found, instead, by measurably improving performance throughout the organization. Finally, the paper describes efforts underway within the Department of Energy and at the Hanford Site to implement the approaches described in this paper.
Date: August 1, 1994
Creator: Conrad, K. W.
Partner: UNT Libraries Government Documents Department