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Palladium deposited on kieselguhr (Pd/K) for the Replacement Tritium Facility (RTF)

Description: Palladium deposited on kieselguhr (Pd/K) will be used for several applications in the Replacement Tritium Facility (RTF). The Pd/K procured for the RTF consists of three batches. All three batches meet the specified particle size distribution that 80 weight percent be between 30 and 50 mesh. One batch contains 53.6% palladium which is less than the specified minimum of 55%. Another batch has a chlorine content of 311 ppm which is slightly in excess of the specified maximum of 250 ppm. These non… more
Date: January 11, 1990
Creator: Mosley, W. C.
Item Type: Refine your search to only Article
open access

Palladium deposited on kieselguhr (Pd/K) for the Replacement Tritium Facility (RTF)

Description: Palladium deposited on kieselguhr (Pd/K) will be used for several applications in the Replacement Tritium Facility (RTF). The Pd/K procured for the RTF consists of three batches. All three batches meet the specified particle size distribution that 80 weight percent be between 30 and 50 mesh. One batch contains 53.6% palladium which is less than the specified minimum of 55%. Another batch has a chlorine content of 311 ppm which is slightly in excess of the specified maximum of 250 ppm. These non… more
Date: January 11, 1990
Creator: Mosley, W. C.
Item Type: Refine your search to only Article
open access

Mechanical support for straw tubes

Description: A design is proposed for mounting a large number of straw tubes to form an SSC central tracking chamber. The assembly is precise and of very low mass. The fabrication is modular and can be carried out with a minimum of tooling and instrumentation. Testing of modules is possible prior to the final assembly. 4 figs.
Date: March 11, 1990
Creator: Joestlein, H.
Item Type: Refine your search to only Report
open access

Ta and Nb reinforced MoSi sub 2

Description: MoSi{sub 2} matrix composites have been recognized lately as potential materials for structural applications at elevated temperatures. Specifically, MoSi{sub 2} composites may exhibit useful properties at temperatures to 1400{degrees}C. Previous work improved the yield strength of MoSi{sub 2} at 1400{degrees}C by a factor of five through SiC whisker reinforcement. Current research is directed towards increasing the fracture toughness of MoSi{sub 2} through the addition of ductile phase reinforc… more
Date: April 11, 1990
Creator: Carter, D. H. & Martin, P. L.
Item Type: Refine your search to only Article
open access

Guidelines for structural bolting in accordance with the AISC (American Institute of Steel Construction) eighth edition manual of steel construction''

Description: This paper specifies the usage of structural bolts in terms of their design, selection and application, in accordance with the American Institute of Steel Construction (AISC) Eighth Edition. Manual of Steel Construction.'' 1 tab.
Date: May 11, 1990
Creator: Western, J. L. & Johns, D. M.
Item Type: Refine your search to only Report
open access

The Flux and Recovery of Bioactive Substances in the Surface Sediments of Deep Basins Off Southern California

Description: Sediment microbial community biomass and activity in Santa Monica Basin, a nearshore basin in the California Continental Borderland, were examined in October 1985, 1986 and 1987, May 1986, April 1987 and January 1990. Millimeter-scale ATP profiles and incubation of intact cores with {sup 3}H-adenine indicated a high-biomass interface microbial population in the low-oxygen central basin, which was absent in samples from the basin slope sediments. A majority of microbial activity and organic matt… more
Date: June 11, 1990
Creator: Jahnke, R. A.
Item Type: Refine your search to only Report
open access

Opto-mechanical support services. Final report

Description: This subcontract was for Optomec`c support of the Los Alamos National Laboratory`s (LANL`s) Group MEE-12 in the technical specialty area of opto-mechanical design, engineering and fabrication. Two individual tasks were defined by MEE-12 and completed by Optomec personnel. Edward J. Yavornik acted as Principal Investigator on the Wire and Fluorescent Fiber Offset Grid (WAFFOG) for the Neutral Particle Beam (NPB) GTA (Ground Test Accelerator) Experiment, and Thomas Swann acted as Principal Invest… more
Date: June 11, 1990
Item Type: Refine your search to only Report
open access

Establishment and maintenance of a coal sample bank and data base

Description: In this Project Status Report for 7/9/89--10/8/89, results of a comparative study of coal sample deterioration in several container types were presented. In April 1990, one year after the initial analyses, the set of analyses was repeated on the most important container types. The new results are included in Table 2. During the current reporting period a total of 42 data printouts were distributed. In addition, 7 special data requests were fulfilled by either search/sort and printout or creatio… more
Date: July 11, 1990
Creator: Davis, A.
Item Type: Refine your search to only Report
open access

Establishment and maintenance of a coal sample bank and data base. [Quarterly] project status report, April 9, 1990--July 8, 1990

Description: In this Project Status Report for 7/9/89--10/8/89, results of a comparative study of coal sample deterioration in several container types were presented. In April 1990, one year after the initial analyses, the set of analyses was repeated on the most important container types. The new results are included in Table 2. During the current reporting period a total of 42 data printouts were distributed. In addition, 7 special data requests were fulfilled by either search/sort and printout or creatio… more
Date: July 11, 1990
Creator: Davis, A.
Item Type: Refine your search to only Report
open access

Supersymmetry breaking from superstrings and the gauge hierarchy

Description: The gauge hierarchy problem is reviewed and a class of effective field theories obtained from superstrings is described. These are characterized by a classical symmetry, related to the space-time duality of string theory, that is responsible for the suppression of observable supersymmetry breaking effects. At the quantum level, the symmetry is broken by anomalies that provide the seed of observable supersymmetry breaking, and an acceptably large gauge hierarchy may be generated. 39 refs.
Date: July 11, 1990
Creator: Gaillard, M.K. (Lawrence Berkeley Lab., CA (USA) California Univ., Berkeley, CA (USA). Dept. of Physics)
Item Type: Refine your search to only Article
open access

Autoionization of Be-like ions following double electron capture in C sup 4+ , O sup 6+ and Ne sup 8+ ions

Description: This paper describes electron emission following the autoionization of doubly excited states in Be-like ions. The Be-like Auger states are produced by two electron capture in slow C{sup 4+}, O{sup 6+} and Ne{sup 8+} ions. These measurements were performed by means of high resolution Auger electron spectroscopy on different target gases and at different projectile energies. Line assignments and relative cross sections are given for the investigated doubly excited states and the excitation mechan… more
Date: September 11, 1990
Creator: McDonald, J.W.
Item Type: Refine your search to only Report
open access

An information-theoretic look at branch-prediction

Description: Accurate branch-prediction is necessary to utilize deeply pipelined and Very Long Instruction-Word (VLIW) architectures. For a set of program traces we show the upper limits on branch predictability, and hence machine utilization, for important classes of branch-predictors using static (compiletime) and dynamic (runtime) program information. A set of optimal superpredictors'' is derived from these program traces. These optimal predictors compare favorably with other proposed methods of branch-p… more
Date: September 11, 1990
Creator: Ponder, C.G. (Lawrence Livermore National Lab., CA (USA)) & Shebanow, M.C. (Motorola, Inc., Austin, TX (USA))
Item Type: Refine your search to only Report
open access

Mathematical modelling of part voltage and weld current in resistance welders

Description: A mathematical model is presented to describe the part voltage and weld current that occur in a single-phase resistance welder. Developing an accurate model of part voltage and current is the first step toward understanding instrumentation, testing, calibration, and measurement requirements. Measurement requirements for dynamic part resistance, calculated from these basic process variables, can ultimately be determined using this analysis. This model utilizes electrical characteristics of the w… more
Date: September 11, 1990
Creator: Destefan, D.E.
Item Type: Refine your search to only Report
open access

Photoionization and electron transfer in ionic crystals

Description: Three lines of work have been completed since our previously submitted proposal. These are: spectroscopy of Ce{sup 3+} {minus} Na{sup +} pairs in CaF{sub 2} and SrF{sub 2}, photoionization studies of Sm{sup 2+}, Eu{sup 2+} and Yb{sup 2+} in CaF{sub 2} and SrF{sub 2}; and infrared-detected two-photon spectroscopy of MgO:Ni{sup 2+}, and other two-photon spectroscopy studies. These are discussed in this report.
Date: September 11, 1990
Creator: McClure, D.S.
Item Type: Refine your search to only Report
open access

X-ray diffraction measurement of residual stresses in delta plutonium

Description: Residual stresses in delta plutonium can be measured by the x-ray diffractometer method. This was accomplished with the aid of an experimental tantalum x-ray target. Preliminary experiments are encouraging and indicate that stresses may be determined precisely and rapidly. Future work will involve determination of x-ray elastic constants, instrument calibration with stress-free standards, higher x-ray power and more sophisticated monochromatization methods. 4 refs., 4 figs., 1 tab.
Date: September 11, 1990
Creator: Steinmeyer, P.A.
Item Type: Refine your search to only Report
open access

Acceleration of compact toruses and fusion applications

Description: The Compact Torus (Spheromak-type) is a near ideal plasma confinement configuration for acceleration. The fields are mostly generated by internal plasma currents, plasma confinement is toroidal, and the compact torus exhibits resiliency and stability in virtue of the ``rugged`` helicity invariant. Based on these considerations we are developing a coaxial rail-gun type Compact Torus Accelerator (CTA). In the CTA, the CT ring is formed between coaxial electrodes using a magnetized Marshall gun, i… more
Date: October 11, 1990
Creator: Hartman, C. W.; Eddleman, J. L.; Hammer, J. H.; Logan, B. G.; McLean, H. S. & Molvik, A. W.
Item Type: Refine your search to only Article
open access

Deactivation by Carbon of Iron Catalysts for Indirect Liquefaction

Description: This report describes recent progress in a fundamental, three-year investigation of carbon formation and its effects on the activity and selectivity of promoted iron catalysts for Fischer-Tropsch (FT) synthesis, the objectives of which are: determine rates and mechanisms of carbon deactivation of unsupported Fe and Fe/K catalysts during CO hydrogenation over a range of CO concentrations, CO:H{sub 2} ratios, and temperatures; model the rates of deactivation of the same catalysts in fixed-bed rea… more
Date: October 11, 1990
Creator: Bartholomew, C. H.
Item Type: Refine your search to only Report
open access

End Cap Calorimeter Inner Hadronic Module Installation

Description: The fixture used to hold the IH module while the EC Calorimeter is pul led over it consists of two tripod frames with a double wide flange between them. The two tripods have legs made of 6-inch Schedule 40 pipe, these legs are tied together with 2-inch Schedule 40 pipe. One of the legs sits on and is attached to a box made of 3/4-inch plates. The fixture was analyzed using ANSYS. The element used was a 3-D beam (STIF4). Equivalent properties were figured for the double wide flange. The legs of … more
Date: October 11, 1990
Creator: Stredde, H. J.
Item Type: Refine your search to only Report
open access

(Resonance ionization spectroscopy)

Description: J. P. Young attended the Fifth International Symposium on Resonance Ionization Spectroscopy and presented an invited oral presentation on research he and coworkers had carried out in applying diode lasers to resonance ionization mass spectrometry. A summary of the conference is given along with an assessment of some of the presentations that the author found of interest. Young also visited Professor Marassi at the University of Camerino to present a seminar and discuss mutual interests in a new… more
Date: October 11, 1990
Creator: Young, J.P.
Item Type: Refine your search to only Report
open access

(Resonance ionization spectroscopy and its applications)

Description: The Fifth International Symposium in Resonance Ionization Spectroscopy and Its Applications was attended. The Joint Research Centre of the European Communities at Ispra, Italy was also visited. The traveler presented an invited talk, chaired a meeting session and gave an impromptu presentation on how current laser technology limits the development of commercial instrumentation based upon Resonance Ionization Spectroscopy. The conference was truely international with scientists from 19 countries… more
Date: October 11, 1990
Creator: Ramsey, J. M.
Item Type: Refine your search to only Report
open access

The US petroleum refining industry in the 1980's

Description: As part of the EIA program on petroleum, The US Petroleum Refining Industry in the 1980's, presents a historical analysis of the changes that took place in the US petroleum refining industry during the 1980's. It is intended to be of interest to analysts in the petroleum industry, state and federal government officials, Congress, and the general public. The report consists of six chapters and four appendices. Included is a detailed description of the major events and factors that affected the d… more
Date: October 11, 1990
Item Type: Refine your search to only Report
open access

Winter Fuels Report: Week Ending October 5, 1990

Description: 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 for all PADD's and product supplied on a US level; propane net production, imports and stocks for Petroleum Administration for Defense Districts (PADD) I, II, and III; natural gas supply and disposition and underground storage, for the United States… more
Date: October 11, 1990
Item Type: Refine your search to only Report
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