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Pattern of Thermal Fluctuations in a Recovery Boiler Floor

Description: The floor of a black liquor recovey boiler at a mill in central Canada has experienced cracking and delamination of the composite tubing near the spout wall and deformation of the floor panels that is most severe in the vicinity of the spout wall. One possible explanation for the observed damage is impacts of salt cake falling from the convective section onto the floor. In order to determine if such impacts do occur, strain gauges and thermocouples were installed on the boiler floor in areas wh… more
Date: April 25, 1999
Creator: Abdullah, Z.; Gorog, J. P.; Keiser, J. R.; Meyers, L. E. & Swindeman, R. W.
Partner: UNT Libraries Government Documents Department
open access

Damage Accumulation in MgAl{sub 2}O{sub 4} and Yttria-Stabilized ZrO{sub 2} by Xe-Ion Irradiation

Description: Magnesium-aluminate spinel (MAS) and yttria-stabilized zirconia (YSZ) are being considered for use as ceramic matrices in proliferation resistant fuels and radioactive storage systems, and may be used either as individual entities or as constituents in multicomponent ceramic systems. It is worthwhile, therefore, to compare radiation damage in these two potentially important materials when subjected to similar irradiation conditions, e.g., ion beam irradiation. To compare radiation damage proper… more
Date: April 25, 1999
Creator: Afanasyev-Charkin, I.V.; Gritsyna, V.T.; Cooke, D.W.; Bennett, B.L. & Sickafus, K.E.
Partner: UNT Libraries Government Documents Department
open access

Can Cavitation Be Anticipated?

Description: The major problem with cavitation in pumps and hydraulic systems is that there is no effective (conventional) method for detecting or predicting its inception. The traditional method of recognizing cavitation in a pump is to declare the event occurring when the total head drops by some arbitrary value (typically 3%) in response to a pressure reduction at the pump inlet. However, the device is already seriously cavitating when this happens. What is actually needed is a practical method to detect… more
Date: April 25, 1999
Creator: Allgood, G. O.; Dress, W. B.; Hylton, J. O. & Kercel, S. W.
Partner: UNT Libraries Government Documents Department
open access

THE Epsilon*/Lambda BRANCHING RATIO OF Y*1

Description: Recently a T = 1 resonance in the {Lambda}{pi} system called Y*{sub 1} has been observed with a mass of 1385 Mev. Two types of resonances have been predicted that might relate this observation to other elementary-particle interactions: (1) P 3/2 resonances in the {Lambda}{pi} and {Sigma}{pi} systems predicted by global symmetry corresponding to the (3/2, 3/2) resonance of the {pi}N system; (2) a spin-1/2 Y-{pi} resonance resulting from a bound state in the KN system. The position and width of t… more
Date: April 25, 1961
Creator: Alston, Margaret H.; Alvarez, Luis W.; Eberhard, Philippe; Good,Myron L.; Graziano, William; Ticho, Harold K. et al.
Partner: UNT Libraries Government Documents Department
open access

Automated DNA Sequencing System

Description: Oak Ridge National Laboratory (ORNL) is developing a core DNA sequencing facility to support biological research endeavors at ORNL and to conduct basic sequencing automation research. This facility is novel because its development is based on existing standard biology laboratory equipment; thus, the development process is of interest to the many small laboratories trying to use automation to control costs and increase throughput. Before automation, biology Laboratory personnel purified DNA, com… more
Date: April 25, 1999
Creator: Armstrong, G. A.; Ekkebus, C. P.; Hauser, L. J.; Kress, R. L. & Mural, R. J.
Partner: UNT Libraries Government Documents Department
open access

Health and safety guide for inorganic compounds and metals used in the fabrication of superconductive alloys

Description: This health and safety guide was written to satisfy two objectives: to summarize the toxicity of metals and alloys used in superconductivity for the benefit of those who work with these materials, and to summarize and describes the basic principles of a highly technical field from a health and safety point-of-view for the benefit of health professionals. The guide begins with a profile of the superconductivity industry, including a list of current and potential applications, a literature review… more
Date: April 25, 1990
Creator: Arnold, S. D. & Talley, G. M.
Partner: UNT Libraries Government Documents Department
open access

Toward automating the database design process

Description: One organization's approach to designing complex, interrelated databases is described. The problems encountered and the techniques developed are discussed. A set of software tools to aid the designer and to produce an initial database design directly is presented. 5 figures.
Date: April 25, 1979
Creator: Asprey, P.L.
Partner: UNT Libraries Government Documents Department
open access

Improved Measurement of CP Violation in Neutral BDecays to \ccbar s

Description: The authors present updated measurements of time-dependent CP asymmetries in fully-reconstructed neutral B decays to several CP eigenstates containing a charmonium meson. The measurements use a data sample of (383 {+-} 4) x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II B factory. They determine sin2{beta} = 0.714 {+-} 0.032(stat) {+-} 0.018(syst) and |{lambda}| = 0.952 {+-} 0.022(stat) {+-} 0.017(syst).
Date: April 25, 2007
Creator: Aubert, B.; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J. P.; Poireau, V. et al.
Partner: UNT Libraries Government Documents Department
open access

Measurement of Decay Amplitudes of B to (ccbar) K^* withan Angular Analysis, for (ccbar)=J/Psi,Psi(2S) and Chi_c1

Description: The authors perform the first three-dimensional measurement of the amplitudes of B {yields} {psi}(2S)K* and B {yields} {chi}{sub c1}K* decays and update the previous measurement B {yields} J/{psi}K*. They use a data sample collected with the BABAR detector at the PEP-II storage ring, corresponding to 232 million B{bar B} pairs. The longitudinal polarization of decays involving a J{sup PC} = 1{sup ++} {chi}{sub c1} meson is found to be larger than that with a 1{sup --} J/{psi} or {psi}(2S) meson… more
Date: April 25, 2007
Creator: Aubert, B.; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J. P.; Poireau, V. et al.
Partner: UNT Libraries Government Documents Department
open access

Measurement of the Absolute Branching Fraction of D0 to K- pi+

Description: The authors measure the absolute branching fraction for D{sup 0} {yields} K{sup -} {pi}{sup +} using partial reconstruction of {bar B}{sup 0} {yields} D*{sup +}X{ell}{sup -}{bar {nu}}{sub {ell}} decays, in which only the charged lepton and the pion from the decay D*{sup +} {yields} D{sup 0}{pi}{sup +} are used. Based on a data sample of 230 million B{bar B} pairs collected at the {Upsilon}(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC, they obtain {Beta… more
Date: April 25, 2007
Creator: Aubert, B.; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J. P.; Poireau, V. et al.
Partner: UNT Libraries Government Documents Department
open access

Fabrication and In Vitro Deployment of a Laser-Activated Shape Memory Polymer Vascular Stent

Description: Vascular stents are small tubular scaffolds used in the treatment of arterial stenosis (narrowing of the vessel). Most vascular stents are metallic and are deployed either by balloon expansion or by self-expansion. A shape memory polymer (SMP) stent may enhance flexibility, compliance, and drug elution compared to its current metallic counterparts. The purpose of this study was to describe the fabrication of a laser-activated SMP stent and demonstrate photothermal expansion of the stent in an i… more
Date: April 25, 2007
Creator: Baer, G. M.; Small, W., IV; Wilson, T. S.; Benett, W. J.; Matthews, D. L.; Hartman, J. et al.
Partner: UNT Libraries Government Documents Department
open access

Obstacles to Laser Safety

Description: The growth of laser development & technology has been remarkable. Unfortunately, a number of traps or obstacles to laser safety have also developed with that growth. The goal of this article is to highlight those traps, in the hope that an aware laser user will avoid them. These traps have been the cause or contributing factor of many a preventable laser accident.
Date: April 25, 2005
Creator: Barat, K.
Partner: UNT Libraries Government Documents Department
open access

Killing Two Birds with One Stone: Can Real-Time Pricing SupportRetail Competition and Demand Response?

Description: As retail choice states reach the end of their transitional, rate-cap periods, state regulators must decide what type of default supply service to provide to customers that have not switched to a competitive retail supplier. In a growing number of states, regulators have adopted real-time pricing (RTP) as the default service for large commercial and industrial (C&I) customers. Although this trend is driven chiefly by policy objectives related to retail competition, default service RTP may h… more
Date: April 25, 2006
Creator: Barbose, Galen; Bharvirkar, Ranjit; Goldman, Charles; Hopper,Nicole & Neenan, Bernie
Partner: UNT Libraries Government Documents Department
open access

Three Dimensional, Integrated Characterization and Archival System for Remote Facility Contaminant Characterization

Description: The largest problem facing the Department of Energy's Office of Environmental Management (EM) is the cleanup of the Cold War legacy nuclear production plants that were built and operated from the mid-forties through the late eighties. EM is now responsible for the remediation of no less than 353 projects at 53 sites across the country at, an estimated cost of $147 billion over the next 72 years. One of the keys to accomplishing a thorough cleanup of any site is a rigorous but quick contaminant … more
Date: April 25, 1999
Creator: Barry, R.E.; Gallman, P.; Jarvis, G. & Griffiths, P.
Partner: UNT Libraries Government Documents Department
open access

A Remotely Deployed Laser System for Viewing/Metrology

Description: A metrology system is being developed for in-vessel inspection of present day experimental, and next generation fusion reactors. It requires accurate measuring capability to verify sub-millimeter alignment of plasma-facing components in the reactor vessel. A metrology system capable of achieving such accuracy for next generation reactors must be compatible with the vessel environment of high gamma radiation, high vacuum, elevated temperature, and magnetic field. This environment requires that t… more
Date: April 25, 1999
Creator: Barry, Robert E.; Herndon, Joseph N.; Menon, Madhavan M. & Spampinato, Philip T.
Partner: UNT Libraries Government Documents Department
open access

Electrical conductivity of fluid oxygen at high pressures

Description: Electrical conductivities of fluid oxygen were measured between 30 and 80 GPa at a few 1000 K. These conditions were achieved with a reverberating shock wave technique. The measured conductivities were several orders of magnitude lower than measured previously on the single shock Hugoniot because of lower temperatures achieved under shock reverberation. Extrapolation of these data suggests that the minimum metallic conductivity of a metal will be reached near 100 GPa.
Date: April 25, 2000
Creator: Bastea, M; Mitchell, A C & Nellis, W J
Partner: UNT Libraries Government Documents Department
open access

Hysteresis in Thin-Film Rechargeable Lithium Batteries

Description: Discharge - charge cycling of thin-film rechargeable lithium batteries with an amorphous or nanocrystalline LiXMn2.Y04 cathode reveals evidence for a true hysteresis in the lithium insertion reaction. This is compared with an apparent hysteresis attributed to a kinetically hindered phase transition near 3 V for batteries with either a crystalline or a nanocrystalline LiJ@Yo4 cathode.
Date: April 25, 1999
Creator: Bates, J. B.; Dudney, N. J.; Evans, C. D. & Hart, F. X.
Partner: UNT Libraries Government Documents Department
open access

Lifetime Response of a Hi-Nicalon Fiber-Reinforced Melt-Infiltrated SiC Matrix Composites

Description: Lifetime studies in four-point flexure were performed on a Hi-Nicalon<sup>TM</sup> fiber-reinforced SiC matrix composite over a temperature range of 700 degrees to 1150 degrees C in air. The composite consisted of ~40 vol. % Hi-Nicalon<sup>TM</sup> fiber (8-harness weave) with a 0.5 Mu-m BN fiber coating and a melt-infiltration SiC matrix wand was tested with as-machined surfaces. Lifetime results indicated that the composite exhibited a stress-dependent lifetime at stress levels above an appar… more
Date: April 25, 1999
Creator: Becher, P. F.; Lin, H. T. & Singh, M.
Partner: UNT Libraries Government Documents Department
open access

Unbound Particles in Dark Matter Halos

Description: No Description Available.
Date: April 25, 2013
Creator: Behroozi, Peter S.; /KIPAC, Menlo Park /Stanford U., Phys. Dept. /SLAC; Loeb, Abraham; U., /Harvard; Wechsler, Risa H. & /KIPAC, Menlo Park /Stanford U., Phys. Dept. /SLAC
Partner: UNT Libraries Government Documents Department
open access

On-Shell Methods in Perturbative QCD

Description: We review on-shell methods for computing multi-parton scattering amplitudes in perturbative QCD, utilizing their unitarity and factorization properties. We focus on aspects which are useful for the construction of one-loop amplitudes needed for phenomenological studies at the Large Hadron Collider.
Date: April 25, 2007
Creator: Bern, Zvi; Dixon, Lance J. & Kosower, David A.
Partner: UNT Libraries Government Documents Department
open access

New capabilities in the HENP grand challenge storage access systemand its application at RHIC

Description: The High Energy and Nuclear Physics Data Access GrandChallenge project has developed an optimizing storage access softwaresystem that was prototyped at RHIC. It is currently undergoingintegration with the STAR experiment in preparation for data taking thatstarts in mid-2000. The behavior and lessons learned in the RHIC MockData Challenge exercises are described as well as the observedperformance under conditions designed to characterize scalability. Up to250 simultaneous queries were tested and… more
Date: April 25, 2000
Creator: Bernardo, L.; Gibbard, B.; Malon, D.; Nordberg, H.; Olson, D.; Porter, R. et al.
Partner: UNT Libraries Government Documents Department
open access

Self-contained Kondo effect in single molecules

Description: Kondo coupling of f and conduction electrons is a common feature of f-electron intermetallics. Similar effects should occur in carbon ring systems (metallocenes). Evidence for Kondo coupling in Ce(C{sub 8}H{sub 8}){sub 2} (cerocene) and the ytterbocene Cp*{sub 2}Yb(bipy) is reported from magnetic susceptibility and L{sub III}-edge x-ray absorption spectroscopy. These well-defined systems provide a new way to study the Kondo effect on the nanoscale, should generate insight into the Anderson Latt… more
Date: April 25, 2005
Creator: Booth, Corwin H.; Walter, Marc D.; Daniel, Million; Lukens, WayneW. & Andersen, Richard A.
Partner: UNT Libraries Government Documents Department
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