Target rapidity baryon distributions in {sup 28}Si + {sup 197}Au and {sup 197}Au + {sup 197}Au collisions at 14.6 and 11.7 A{center_dot}GeV/c (open access)

Target rapidity baryon distributions in {sup 28}Si + {sup 197}Au and {sup 197}Au + {sup 197}Au collisions at 14.6 and 11.7 A{center_dot}GeV/c

Proton and deuteron kinetic energy spectra have been measured at target rapidities for both minimum bias and central collisions of 14.6 A{center_dot}GeV/c {sup 28}Si and 11.7 A{center_dot}GeV/c {sup 197}Au beams with a {sup 197}Au target. The spectra were measured from a low energy threshold of approximately E{sub kin}=35 MeV to well over 200 MeV for laboratory angles of 50{degree} to 130{degree} ({vert_bar}{eta}{vert_bar} {le}0.76). The acceptance-corrected spectra have been fit over a limited range of kinetic energies using a Boltzmann distribution. The integrated yields and the inverse slope parameters are presented as a function of centrality for the {sup 28}Si + {sup 197}Au reaction and as a function of trigger for the {sup 197}Au + {sup 197}Au reaction. These quantities are also compared with the proton spectra generated using both the ARC and RQMD codes.
Date: February 25, 1993
Creator: Sangster, T.C.; Costales, J.B.; Namboodiri, M.N. & Collaboration, E802
Object Type: Article
System: The UNT Digital Library
Cable tracking system proposal (open access)

Cable tracking system proposal

The Experimental Facilities Division requires a labeling system to identify and catalog the instrumentation, control, and computer cables that will run throughout the building. Tom Sheridan from the MIS Group has already made some general suggestions about the information that could be included in an Oracle-based Cable Tracking System (E-mail text distributed by Gary Gunderson on the 27th of August). Glenn Decker`s LS Note No. 191 is also relevant to the subject since it addresses name assignment rules for the storage ring devices. The intent of this note is to recommend a mechanism for tracking wires/cables, with enough specifics, to which all groups in the Division would adhere when pulling cables. Because most cables will run between various beamline devices, hutch safety components, and equipment racks, any method of tracking cables is related to the Equipment Tracking System. That system has been developed by the APS Project personnel and is described in the APS Project Equipment Tracking System Guidelines (DRAFT). It can be adopted to XFD`s needs. Two essential features of the Cable Tracking System are: 1) Each cable shell have a unique Identifier, and 2) Cable label must contain information that is helpful during troubleshooting in the field. The …
Date: June 25, 1993
Creator: Friedman, N.
Object Type: Report
System: The UNT Digital Library
Testing the validity of a receptor kinetic model via TcNGA functional imaging of liver transplant recipients. Final report (open access)

Testing the validity of a receptor kinetic model via TcNGA functional imaging of liver transplant recipients. Final report

The author had accomplished the expertise for I-125-HSA plasma volume, galactose clearance for determination of hepatic plasma flow as well as finalizing the kinetic model. They have just completed modifying the microscale Scatchard assay for greater precision of receptor measurement using only 5--10 mg of liver tissue. In addition, he determined during the past year that the most practical method and clinically reasonable measurement of liver volume was to measure the transplanted liver in vivo using Tc-NGA images in the anterior, posterior, and right lateral projections, using the method of Rollo and DeLand. Direct measurement of liver weight obtained during transplant operation was not reliable due to variability of fluid retention in the donor liver secondary to ischemia, preservation fluid, etc., which thereby did not reflect an accurate liver weight which is needed in the kinetic analysis comparison, i.e., V{sub h} (hepatic plasma volume).
Date: March 25, 1993
Creator: Stadalnik, R. C.
Object Type: Report
System: The UNT Digital Library
Magnetic measurements of the wedge-pole prototype undulator (open access)

Magnetic measurements of the wedge-pole prototype undulator

The Advanced Photon Source (APS), a 7-GeV positron storage ring, will have as many as 34 straight sections available for installation of multiple insertion devices (IDs). The size and the taper of the gap of the IDs will be able to be varied to tune the energy of the emitted radiation to the experiments. The IDs must not affect the particle beam motion. Therefore, the disturbances should be kept within tight boundaries to assure that the ring performance parameters are maintained and that the emitted radiation shows little degradation from an ideal device. These requirements are derived from the stability criteria of the beam to be stable within 10% of the emittance: The requirements cannot be met without using closed loop orbit compensation. With such a system installed, it is reasonable to relax the requirements on the ID magnetic field performance.
Date: June 25, 1993
Creator: Vasserman, I.; Pflueger, J. & Gluskin, E.
Object Type: Report
System: The UNT Digital Library
D0 Solenoid Upgrade Project: Pressure Ratings for Some Chimney and Control Dewar Componenets (open access)

D0 Solenoid Upgrade Project: Pressure Ratings for Some Chimney and Control Dewar Componenets

Pressure rating calculations were done for some of the chimney and control dewar components. This engineering note documents these calculations. The table below summarizes the components looked at, and what pressure rating are. The raw engineering calculations for each of the components is given.
Date: May 25, 1993
Creator: Rucinski, R.
Object Type: Report
System: The UNT Digital Library
IGR NO[sub x]/SO[sub x] control technology (open access)

IGR NO[sub x]/SO[sub x] control technology

The technical work during this reporting term has principally involved the continued development, optimization and improvement of freezing drying techniques for solid ceramic oxide electrolyte powder preparation, preliminary optimization of the calcining of the ceramic electrolyte freeze dried powders to allow for optimum processing to the IGR composite, and determining (initial) electrochemical properties of the stabilized ceramic solid electrolyte at a variety of temperatures in air.
Date: April 25, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Corrosion fatigue of iron-chromium-nickel alloys: Fracture mechanics, microstructure and chemistry (open access)

Corrosion fatigue of iron-chromium-nickel alloys: Fracture mechanics, microstructure and chemistry

Phase transformation and cracking during RT aging of charged, high-purity Fe18Cr12Ni alloy and commerical 304 ss were examined; results show that [epsilon]* (hcp) hydride formed on Fe18Cr12Ni upon charging, and it decomposed rapidly to form first [epsilon] and then [alpha]' martensite. Morphology of fracture surfaces of Fe18Cr12Ni produced by corrosion fatigue in NaCl solutions and in hydrogen was found to be identical. Effort was made to examine the approaches and methodologies used in service life predictions and reliability analyses.
Date: January 25, 1993
Creator: Wei, R.P.
Object Type: Report
System: The UNT Digital Library
Geothermal Research and Development Program (open access)

Geothermal Research and Development Program

Results are reported on adsorption of water vapor on reservoir rocks, physics of injection of water into vapor-dominated geothermal reservoirs, earth-tide effects on downhole pressures, injection optimization at the Geysers, effects of salinity in adsorption experiments, interpreting multiwell pressure data from Ohaaki, and estimation of adsorption parameters from transient experiments.
Date: January 25, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Effect of pretreating of host oil on coprocessing (open access)

Effect of pretreating of host oil on coprocessing

The principal objective of this research is to determine the role host petroleum-derived oils (1000[degrees]F+), as well as that of catalytically treated host oils, play when used as liquefaction solvents in coprocessing with coal. The host oils will be extensively characterized and then pretreated in a number of ways which involve catalytic reactions such as hydrogenation, hydrocracking, isomerization, and dehydrogenation. The pretreated oils win then be characterized. The effects of the host oil on coprocessing with coal win be compared to those obtained using catalytically modified heavy oils. When appropriate, model compounds will be used to study specific reactions brought about by the pretreatments. Highly dispersed iron catalysts modified by the addition of small amounts of other metals wig be used to modify the chemical composition of the host oils. Work continued on Task H during this quarter. In the first phase of this task, the test oil, an Amoco resid, is being treated with hydrogenation catalysts such as Mo(CO)[sub 6] and Fe[sub 2]O[sub 3]/SO[sub 4] to determine the conditions necessary to increase the hydrogen content from about 10.2 wt % to about 11.5 wt %. In the second phase, more severe hydrogenation/hydrorefining is being carried out to determine the …
Date: March 25, 1993
Creator: Wender, I. & Tierney, J.W.
Object Type: Report
System: The UNT Digital Library
State policies affecting natural gas consumption (Notice of inquiry issued on August 14, 1992) (open access)

State policies affecting natural gas consumption (Notice of inquiry issued on August 14, 1992)

On August 14, 1992, the United States Department of Energy issued a Request for Comments Concerning State Policies Affecting Natural Gas Consumption. This Notice of (NOI) noted the increasing significance of the role played by states and sought to gain better understanding of how state policies impact the gas industry. The general trend toward a. more competitive marketplace for natural gas, as well as recent regulatory and legislative changes at the Federal level, are driving State regulatory agencies to reevaluate how they regulate natural gas. State action is having a significant impact on the use of natural gas for generating electricity, as well as affecting the cost-effective trade-off between conservation expenditures and gas use. Additionally, fuel choice has an impact upon the environment and national energy security. In light of these dimensions, the Department of Energy initiated this study of State regulation. The goals of this NOI are: (1) help DOE better understand the impact of State policies on the efficient use of gas; (2) increase the awareness of the natural gas industry and Federal and State officials to the important role of State policies and regulations; (3) create an improved forum for dialogue on State and Federal natural gas …
Date: March 25, 1993
Creator: Lemon, R. & Kamphuis-Zatopa, W.
Object Type: Article
System: The UNT Digital Library
Battery testing at Argonne National Laboratory (open access)

Battery testing at Argonne National Laboratory

Argonne National Laboratory's Analysis Diagnostic Laboratory (ADL) tests advanced batteries under simulated electric and hybrid vehicle operating conditions. The ADL facilities also include a post-test analysis laboratory to determine, in a protected atmosphere if needed, component compositional changes and failure mechanisms. The ADL provides a common basis for battery performance characterization and life evaluations with unbiased application of tests and analyses. The battery evaluations and post-test examinations help identify factors that limit system performance and life, and the most-promising R D approaches for overcoming these limitations. Since 1991, performance characterizations and/or life evaluations have been conducted on eight battery technologies (Na/S, Li/S, Zn/Br, Ni/MH, Ni/Zn, Ni/Cd, Ni/Fe, and lead-acid). These evaluations were performed for the Department of Energy's. Office of Transportation Technologies, Electric and Hybrid Propulsion Division (DOE/OTT/EHP), and Electric Power Research Institute (EPRI) Transportation Program. The results obtained are discussed.
Date: March 25, 1993
Creator: DeLuca, W. H.; Gillie, K. R.; Kulaga, J. E.; Smaga, J. A.; Tummillo, A. F. & Webster, C. E.
Object Type: Article
System: The UNT Digital Library
Magnetic field effects on endcap EM calorimetry in SDC (open access)

Magnetic field effects on endcap EM calorimetry in SDC

The SDC calorimeter will be immersed in a strong magnetic field in the endcap region because of the solenoid which supplies the SDC tracking field. This flux must be returned through the endcap region of the electromagnetic (EM) and hadronic (HAD) calorimeters. Since magnetic fields are known to induce changes in the light output of plastic scintillator, the endcap will need to be recalibrated once the solenoid is energized. In addition, gradients in the field will create nonuniformities in the calorimetric response. The induced constant term'' in the EM and HAD calorimeters due to the inhomogeneities induced by the magnetic field are here evaluated in order to see that SDC performance specifications are not compromised.
Date: January 25, 1993
Creator: Green, D.
Object Type: Report
System: The UNT Digital Library
Effect of pretreating of host oil on coprocessing (open access)

Effect of pretreating of host oil on coprocessing

The principal objective of this research is to determine the role host petroleum-derived oils (1000[degrees]F+), as well as that of catalytically treated host oils, play when used as liquefaction solvents in coprocessing with coal. The host oils will be extensively characterized and then pretreated in a number of ways which involve catalytic reactions such as hydrogenation, hydrocracking, isomerization, and dehydrogenation. The pretreated oils will then be characterized. The effects of the host oil on coprocessing with coal will be compared to those obtained using catalytically modified heavy oils. When appropriate, model compounds will be used to study specific reactions brought about by the pretreatments. Highly dispersed iron catalysts modified by the addition of small amounts of other metals will be used to modify the chemical composition of the host oils. To date, five different pretreatment reactions have been carried out on the Amoco oil. Table 1 list some properties of this oil. Details of the reaction conditions used are given in Table 2. An objective of the pretreatment reactions is to increase hydrogen content without too significant a breakdown (cracking) of the hydrocarbon structures. Severe cracking could produce a light hydrocarbon solvent which may not be suitable for coprocessing because …
Date: January 25, 1993
Creator: Wender, I. & Tierney, J.W.
Object Type: Report
System: The UNT Digital Library
Quasi-elastic neutron scattering studies of protein dynamics (open access)

Quasi-elastic neutron scattering studies of protein dynamics

Results that shed new light on the study of protein dynamics were obtained by quasi-elastic neutron scattering. The triple axis instrument H-9 supplied by the cold source was used to perform a detailed study of the quasi-elastic spectrum and the Debye-Waller factor for trypsin in powder form, in solution, and in crystals. A preliminary study of myoglobin crystals was also done. A new way to view the results of quasi-elastic scattering experiments is sketched, and the data on trypsin are presented and analyze according to this new picture.
Date: May 25, 1993
Creator: Rorschach, H.E.
Object Type: Report
System: The UNT Digital Library
Infrared Spectroscopy of Organic Free Radicals Related to Combustion Processes (open access)

Infrared Spectroscopy of Organic Free Radicals Related to Combustion Processes

We will explore a variant of resonant two-photon ionization (R2PI). Development of the IR + UV R2PI experiment is underway. We have used optical R2PI and pulsed field ionization detection to obtain vibrational spectra of the benzyl and phenylsilane cations. In benzyl, we have learned about the vibronic coupling in the mixed 1[sup 2]A[sub 2]-2[sup 2]B[sub 2] system near 450 nm by projecting the mixed states onto the manifold of cation vibrational states. In phenylsilane[sup +], we find that the sixfold barrier to internal rotation of the silyl group is small (V[sub 6]= +19 cm[sup [minus]1]). We are beginning to understand the mechanisms of coupling of torsional states with vibrations, overall rotation, and other electronic states, and we are developing a model of internal rotation in aromatic compounds based on Weinhold's natural resonance theory. 1 tab, 14 refs.
Date: February 25, 1993
Creator: Weisshaar, J C.
Object Type: Report
System: The UNT Digital Library
IGR NO{sub x}/SO{sub x} control technology. [Quarterly] report, April 1, 1993--June 30, 1993 (open access)

IGR NO{sub x}/SO{sub x} control technology. [Quarterly] report, April 1, 1993--June 30, 1993

This reporting term covers the first full quarter subsequent to the program kick-off meeting and the DOE authorization to proceed with the contract work. As such the work of this term principally involves ordering, assembling, and de-bugging equipment as well as the development of the solid electrolyte materials and some initial electrochemical studies. These initial studies make use of the above instrumentation and act as a source of calibration for subsequent studies. Specifically the work during this reporting term has involved the optimization of the sintering of the ceramic electrolyte freeze dried powder to allow for optimum performance of the IGR ceramic composite, the determination of the electrochemical properties in air of the above stabilized ceramic solid oxide electrolyte material over the relevant ranges of applied voltage and temperatures, and the detailed planning, equipment/parts ordering, acquisition, and integration for the computer controlled electrochemical test apparatus for the electrocatalytic materials.
Date: July 25, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
[Oxygenated octane enhancers: Syngas to isobutylene]. Technical progress report No. 8, January 1, 1993--March 31, 1993 (open access)

[Oxygenated octane enhancers: Syngas to isobutylene]. Technical progress report No. 8, January 1, 1993--March 31, 1993

The goal of this program is to develop a catalyst and a process for the conversion of syngas to isobutylene. However, due to the low conversion and selectivity generally experienced by the industry in direct conversion of syngas to isobutylene, indirect conversion via branched C{sub 4} alcohol intermediates is being explored. The objectives of the current program are to develop a catalyst and process for the conversion of syngas to isobutanol and to evaluate the commercial potential of the new process. The research program underway at UOP will identify and optimize key catalyst and process characteristics. This report covers the modification and shake-down of a fixed-bed pilot plant (No. 700) for the testing of catalysts and catalyst combinations. A separate syngas feed system has been added to an existing fixed bed Fischer-Tropsch pilot plant and new reactors are constructed to avoid catalyst cross contamination. Shake-down testing with a commercial Cu/Zn/Al oxide catalyst alone and in combination with a basic Mg/Al MOSS (Metal Oxide Solid Solution) catalyst have demonstrated good CO and H{sub 2} conversion. However, contamination of the product by residual Fischer-Tropsch product in the exit lines and the liquid gas chromatograph (GC) has prevented accurate product analyses. A separate …
Date: October 25, 1993
Creator: Barger, P. T.
Object Type: Report
System: The UNT Digital Library
An assessment of testing requirement impacts on nuclear thermal propulsion ground test facility design (open access)

An assessment of testing requirement impacts on nuclear thermal propulsion ground test facility design

Programs to develop solid core nuclear thermal propulsion (NTP) systems have been under way at the Department of Defense (DoD), the National Aeronautics and Space Administration (NASA), and the Department of Energy (DOE). These programs have recognized the need for a new ground test facility to support development of NTP systems. However, the different military and civilian applications have led to different ground test facility requirements. The Department of Energy (DOE) in its role as landlord and operator of the proposed research reactor test facilities has initiated an effort to explore opportunities for a common ground test facility to meet both DoD and NASA needs. The baseline design and operating limits of the proposed DoD NTP ground test facility are described. The NASA ground test facility requirements are reviewed and their potential impact on the DoD facility baseline is discussed.
Date: October 25, 1993
Creator: Shipers, L. R.; Ottinger, C. A. & Sanchez, L. C.
Object Type: Article
System: The UNT Digital Library
The Effect of Prior Out-of-Plane Damage on the in-Plane Behavior of Unreinforced Masonry Infilled Frames (open access)

The Effect of Prior Out-of-Plane Damage on the in-Plane Behavior of Unreinforced Masonry Infilled Frames

In order to address the effect of prior out-of-plane damage on the in-plane behavior of unreinforced masonry infills, two full-scale (24 feet tall by 28 feet long) structural clay tile infills and one frame-only (no infilling) were constructed and tested. The infilled frame, consisting of two wide flange columns surrounded by masonry plasters and an eccentric wide flange purlin, was identical to many of the infills located at the Oak Ridge Y-12 Plant. The masonry infill was approximately 12.5 inches thick and was composed of individual four- and eight-inch hollow clay tile (HCT) units. One of the infill panels was tested out-of-plane by four quasi-static actuators -- two on each column. The test structure was deflected out-of-plane equally at all four actuator locations in order to simulate the computed deflection path of the top and bottom chords of a roof truss framing into the columns at these locations. Prior to the infill testing, a bare frame was loaded similarly in order to determine the behavior and stiffness contribution of the frame only. Following the out-of-plane test of the infilled panel, the structure was loaded in-plane to failure in order to ascertain residual strength. A second, identical infilled frame was then …
Date: August 25, 1993
Creator: Henderson, R. C.; Jones, W. D.; Burdette, E. G. & Porter, M. L.
Object Type: Article
System: The UNT Digital Library
Equation of state of neutron star matter, limiting, rotational periods of fast pulsars, and the properties of strange stars (open access)

Equation of state of neutron star matter, limiting, rotational periods of fast pulsars, and the properties of strange stars

In this paper the following items will be treated: The present status of dense nuclear matter calculations and constraints on the behavior of the associated equation of state at high densities from data on rapidly rotating pulsars. Recent finding of the likely existence of a mixed phase of baryons and quarks forming a coulomb lattice in the dense cores of neutron stars. Review of important findings of recently performed calculations of rapidly rotating compact stars. These are constructed in the framework of general relativity theory for a representative collection of realistic nuclear equations of state. Establish the minimum-possible rotational periods of gravitationally bound neutron stars and self-bound strange stars. Its knowledge is of fundamental importance for the decision between pulsars that can be understood as rotating neutron stars and those that cannot (signature of hypothetical self-bound matter of which strange stars are the likely stellar candidates. Investigate the properties of sequences of strange stars. Specifically, we answer the question whether such objects can give rise to the observed phenomena of pulsar glitches, which is at the present time the only astrophysical test of the strange-quark-matter hypothesis.
Date: October 25, 1993
Creator: Weber, F. & Glendenning, N. K.
Object Type: Article
System: The UNT Digital Library
Technical review of SRT-CMA-930058 revalidation studies of Mark 16 experiments: J70 (open access)

Technical review of SRT-CMA-930058 revalidation studies of Mark 16 experiments: J70

This study is a reperformance of a set of MGBS-TGAL criticality safety code validation calculations previously reported by Clark. The reperformance was needed because the records of the previous calculations could not be located in current APG files and records. As noted by the author, preliminary attempts to reproduce the Clark results by direct modeling in MGBS and TGAL were unsuccessful. Consultation with Clark indicated that the MGBS-TGAL (EXPT) option within the KOKO system should be used to set up the MGBS and TGAL input data records. The results of the study indicate that the technique used by Clark has been established and that the technique is now documented for future use. File records of the calculations have also been established in APG files. The review was performed per QAP 11--14 of 1Q34. Since the reviewer was involved in developing the procedural technique used for this study, this review can not be considered a fully independent review, but should be considered a verification that the document contains adequate information to allow a new user to perform similar calculations, a verification of the procedure by performing several calculations independently with identical results to the reported results, and a verification of the …
Date: October 25, 1993
Creator: Reed, R. L.
Object Type: Report
System: The UNT Digital Library
State policies affecting natural gas consumption (Notice of inquiry issued on August 14, 1992). Summary of comments (open access)

State policies affecting natural gas consumption (Notice of inquiry issued on August 14, 1992). Summary of comments

On August 14, 1992, the United States Department of Energy issued a Request for Comments Concerning State Policies Affecting Natural Gas Consumption. This Notice of (NOI) noted the increasing significance of the role played by states and sought to gain better understanding of how state policies impact the gas industry. The general trend toward a. more competitive marketplace for natural gas, as well as recent regulatory and legislative changes at the Federal level, are driving State regulatory agencies to reevaluate how they regulate natural gas. State action is having a significant impact on the use of natural gas for generating electricity, as well as affecting the cost-effective trade-off between conservation expenditures and gas use. Additionally, fuel choice has an impact upon the environment and national energy security. In light of these dimensions, the Department of Energy initiated this study of State regulation. The goals of this NOI are: (1) help DOE better understand the impact of State policies on the efficient use of gas; (2) increase the awareness of the natural gas industry and Federal and State officials to the important role of State policies and regulations; (3) create an improved forum for dialogue on State and Federal natural gas …
Date: March 25, 1993
Creator: Lemon, R. & Kamphuis-Zatopa, W.
Object Type: Article
System: The UNT Digital Library
Magnetic field effects on endcap EM calorimetry in SDC (open access)

Magnetic field effects on endcap EM calorimetry in SDC

The SDC calorimeter will be immersed in a strong magnetic field in the endcap region because of the solenoid which supplies the SDC tracking field. This flux must be returned through the endcap region of the electromagnetic (EM) and hadronic (HAD) calorimeters. Since magnetic fields are known to induce changes in the light output of plastic scintillator, the endcap will need to be recalibrated once the solenoid is energized. In addition, gradients in the field will create nonuniformities in the calorimetric response. The ``induced constant term`` in the EM and HAD calorimeters due to the inhomogeneities induced by the magnetic field are here evaluated in order to see that SDC performance specifications are not compromised.
Date: January 25, 1993
Creator: Green, D.
Object Type: Report
System: The UNT Digital Library
Development of an extraction process for removal of heteroatoms from coal liquids. Technical progress report No. 6, 1 July, 1993--30 September, 1993 (open access)

Development of an extraction process for removal of heteroatoms from coal liquids. Technical progress report No. 6, 1 July, 1993--30 September, 1993

The objective of this contract is to develop a CO{sub 2}-water extraction process for the removal of heteroatoms from coal-derived naphtha, diesel, and jet fuel. Coal liquids are characterized by their high content of heteroatoms. Conventional techniques could remove the heteroatoms from coal liquids, but at a high hydrogen consumption and at a high cost. A successful development of the CO{sub 2}-water extraction process will increase the environmental acceptability of coal liquids and reduce the H{sub 2} requirements for the upgrading of coal liquids. This report describes activities under two tasks: Task 2.0, Feed procurement and Task 3.0, Process variable screening studies.
Date: October 25, 1993
Creator: Gala, H. B.
Object Type: Report
System: The UNT Digital Library