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Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Note: Spatial resolution of Fuji BAS-TR and BAS-SR imaging plates  

SciTech Connect (OSTI)

The spatial resolution of two types of imaging plates, Fuji BAS-TR and Fuji BAS-SR, has been measured using a knife-edge x-ray source of 8-keV Cu K{sub {alpha}} radiation. The values for the spatial resolution, defined as the distance between 10% and 90% levels of the edge spread function, are 94 {mu}m and 109 {mu}m, respectively. The resolution values are important for quantitative analysis of x-ray and particle imaging and spectroscopic diagnostics.

Fiksel, G.; Marshall, F. J.; Mileham, C.; Stoeckl, C. [Laboratory for Laser Energetics, University of Rochester, 250 East River Rd., Rochester, New York 14623-1299 (United States)

2012-08-15T23:59:59.000Z

2

An early history of pure shear in the upper plate of the raft...  

Open Energy Info (EERE)

early history of pure shear in the upper plate of the raft river metamorphic core complex- black pine mountains, southern Idaho Jump to: navigation, search OpenEI Reference...

3

Upper mantle structure beneath the Caribbean-South American plate boundary from surface wave tomography  

E-Print Network [OSTI]

Upper mantle structure beneath the Caribbean-South American plate boundary from surface wave velocity structure of the crust and upper mantle of the Caribbean-South American boundary region American continental lithosphere, the Venezuelan archipelago, and the Caribbean oceanic lithosphere

Niu, Fenglin

4

A normal-faulting seismic sequence triggered by the 2011 off the Pacific coast of Tohoku Earthquake: Wholesale stress regime changes in the upper plate  

E-Print Network [OSTI]

: Wholesale stress regime changes in the upper plate Aitaro Kato*1 , Shin'ichi Sakai1 , and Kazushige Obara1 1

Kato, Aitaro

5

BAS C. VAN FRAASSEN CLARENDON PRESS -OXFORD  

E-Print Network [OSTI]

THE SCIENTIFIC IMAGE BAS C. VAN FRAASSEN CLARENDON PRESS - OXFORD #12;18 ARGUMENTS CONCERNING adequate, ones whose models fit the observable phenomena. while recognizing that what counts

Fitelson, Branden

6

Seismogenic zone input: the upper plate contribution in Costa Rica. Structural analysis of the Osa Mlange.  

E-Print Network [OSTI]

transformations, or fluid pressure changes is leading to the locking and onset of earthquakes with depth along drilling experiment designed to reach the seismogenic portion of the plate boundary. Recent drilling has

Royal Holloway, University of London

7

Operational Effectiveness in Use fo BAS  

E-Print Network [OSTI]

, making it an under-utilized resource. We do not have an established industry baseline of how operators use BAS nor what best practices might be. An ASHRAE research project is surveying operators to investigate desirable ?dashboard? interfaces...-to-machine feedback is most advanced in the area of Demand Response, where initiation of a special mode activates prioritized load-shedding to meet a pre- determined kw level. The major controls manufacturers have prototypes for machine-to- machine oversight...

Bobker, M.; Joseph, M.; Ascazubi, M.; Brown, T.; Thorpe, K.; Essman, J.

2013-01-01T23:59:59.000Z

8

A Logic of Emotions for Intelligent Agents Bas R. Steunebrink  

E-Print Network [OSTI]

A Logic of Emotions for Intelligent Agents Bas R. Steunebrink Department of ICS Utrecht University Utrecht, The Netherlands bass@cs.uu.nl Mehdi Dastani Department of ICS Utrecht University Utrecht, The Netherlands mehdi@cs.uu.nl John-Jules Ch. Meyer Department of ICS Utrecht University Utrecht, The Netherlands

Dastani, Mehdi

9

Chapter 19: HVAC Controls (DDC/EMS/BAS) Evaluation Protocol  

SciTech Connect (OSTI)

The HVAC Controls Evaluation Protocol is designed to address evaluation issues for direct digital controls/energy management systems/building automation systems (DDC/EMS/BAS) that are installed to control heating, ventilation, and air-conditioning (HVAC) equipment in commercial and institutional buildings. (This chapter refers to the DDC/EMS/BAS measure as HVAC controls.) This protocol may also be applicable to industrial facilities such as clean rooms and labs, which have either significant HVAC equipment or spaces requiring special environmental conditions. This protocol addresses only HVAC-related equipment and the energy savings estimation methods associated with installing such control systems as an energy efficiency measure. The affected equipment includes: Air-side equipment (air handlers, direct expansion systems, furnaces, other heating- and cooling-related devices, terminal air distribution equipment, and fans); Central plant equipment (chillers, cooling towers, boilers, and pumps). These controls may also operate or affect other end uses, such as lighting, domestic hot water, irrigation systems, and life safety systems such as fire alarms and other security systems. Considerable nonenergy benefits, such as maintenance scheduling, system component troubleshooting, equipment failure alarms, and increased equipment lifetime, may also be associated with these systems. When connected to building utility meters, these systems can also be valuable demand-limiting control tools. However, this protocol does not evaluate any of these additional capabilities and benefits.

Romberger, J.

2014-11-01T23:59:59.000Z

10

Nuclear reactor alignment plate configuration  

DOE Patents [OSTI]

An alignment plate that is attached to a core barrel of a pressurized water reactor and fits within slots within a top plate of a lower core shroud and upper core plate to maintain lateral alignment of the reactor internals. The alignment plate is connected to the core barrel through two vertically-spaced dowel pins that extend from the outside surface of the core barrel through a reinforcement pad and into corresponding holes in the alignment plate. Additionally, threaded fasteners are inserted around the perimeter of the reinforcement pad and into the alignment plate to further secure the alignment plate to the core barrel. A fillet weld also is deposited around the perimeter of the reinforcement pad. To accomodate thermal growth between the alignment plate and the core barrel, a gap is left above, below and at both sides of one of the dowel pins in the alignment plate holes through with the dowel pins pass.

Altman, David A; Forsyth, David R; Smith, Richard E; Singleton, Norman R

2014-01-28T23:59:59.000Z

11

Building automation systems (BAS) are concerned with control and monitoring of buildings, while aiming to  

E-Print Network [OSTI]

Building automation systems (BAS) are concerned with control and monitoring of buildings, while alarm systems or physical access control), · control the climate in the building/supervise and control operating and energy costs Realization and Experiences with a Low-Cost Building Automation Security Testbed

Behnke, Sven

12

Building Application Stack (BAS) Andrew Krioukov, Gabe Fierro, Nikita Kitaev, David Culler  

E-Print Network [OSTI]

Building Application Stack (BAS) Andrew Krioukov, Gabe Fierro, Nikita Kitaev, David Culler Computer.fierro@berkeley.edu, kitaev@berkeley.edu, culler@cs.berkeley.edu Abstract Many commercial buildings have digital controls, detecting faults, improving comfort, etc. However, buildings are custom designed, lead- ing to differences

California at Berkeley, University of

13

Endovascular Embolization of Bronchial Artery Originating from the Upper Portion of Aortic Arch in Patients with Massive Hemoptysis  

SciTech Connect (OSTI)

PurposeOur experience with endovascular embolization (EVE) of the bronchial artery (BA) originating from the upper portion of the aortic arch (AA) in six patients is described.MethodsAltogether, 818 patients with hemoptysis underwent multidetector row computed tomography angiography (MDCTA) before EVE or AA angiography during EVE. Aberrant BAs originating from the upper portion of the AA were the source of massive hemoptysis in six patients (0.73 %). MDCT angiograms and/or Digital subtraction angiograms were retrospectively reviewed. Selective catheterization and embolization were performed.ResultsThe ostia of the BAs were located on the superior surface of the AA between the brachiocephalic trunk and left common carotid artery in three patients, the junction of the aorta and medial surface of the left subclavian artery in two, and the posterior wall of the upper portion of the AA in one. The six BAs comprised two common trunks, three single right sides, and one single left side. The targeted vessels were successfully catheterized and embolized by a coaxial microcatheter system using polyvinyl alcohol particles. Other pathologic BAs and nonbronchial systemic arteries also were embolized. Bleeding was immediately controlled in all patients with no recurrence of hemoptysis. No procedure-related complications occurred.ConclusionsApplication of EVE of anomalous origin of BAs in patients with hemoptysis is important, as demonstrated in the six reported patients. MDCTA before EVE or AA angiography during EVE is critical to avoid missing a rare aberrant BA originating from the upper portion of the AA.

Jiang, Sen, E-mail: jasfly77@vip.163.com; Sun, Xi-Wen, E-mail: xwsun@citiz.net; Yu, Dong, E-mail: yudong_mail@126.com; Jie, Bing, E-mail: jbshh@163.com [Tongji University School of Medicine, Department of Radiology, Shanghai Pulmonary Hospital (China)

2013-05-15T23:59:59.000Z

14

Electroless copper plating  

DOE Patents [OSTI]

An optimized electroless copper plating technique suitable for plating electroless copper upon ceramics.

McHenry, Michael R. (Lee's Summit, MO)

1998-12-15T23:59:59.000Z

15

Electroless copper plating  

DOE Patents [OSTI]

An optimized electroless copper plating technique is described suitable for plating electroless copper upon ceramics. 12 figs.

McHenry, M.R.

1998-12-15T23:59:59.000Z

16

A new refined theory of plates with transverse shear deformation for moderately thick and thick plates  

E-Print Network [OSTI]

In this paper we propose a new refined shear deformation plate theory which possesses a series of desirable features, the most salient of which are as follows: (i) The loads, which are generally considered to be applied on the middle surface of the plate, act on the upper surface of the plate; (ii) The equations are applicable to the calculation of the stresses in isotropic plates and provide the same order of accuracy as several theories with second order shear deformation effects; (iii) It constitutes a theory, in the sense defined by Love, since it gives easy expressions for application to problems in different fields in architecture and civil engineering

Valle, Jose Miguel Martinez

2015-01-01T23:59:59.000Z

17

Upper bound analysis for drag anchors in soft clay  

E-Print Network [OSTI]

This study presents an upper bound plastic limit analysis for predicting drag anchor trajectory and load capacity. The shank and fluke of the anchor are idealized as simple plates. The failure mechanism involves the motion of the anchor about a...

Kim, Byoung Min

2007-04-25T23:59:59.000Z

18

Earth's Decelerating Tectonic Plates  

SciTech Connect (OSTI)

Space geodetic and oceanic magnetic anomaly constraints on tectonic plate motions are employed to determine a new global map of present-day rates of change of plate velocities. This map shows that Earth's largest plate, the Pacific, is presently decelerating along with several other plates in the Pacific and Indo-Atlantic hemispheres. These plate decelerations contribute to an overall, globally averaged slowdown in tectonic plate speeds. The map of plate decelerations provides new and unique constraints on the dynamics of time-dependent convection in Earth's mantle. We employ a recently developed convection model constrained by seismic, geodynamic and mineral physics data to show that time-dependent changes in mantle buoyancy forces can explain the deceleration of the major plates in the Pacific and Indo-Atlantic hemispheres.

Forte, A M; Moucha, R; Rowley, D B; Quere, S; Mitrovica, J X; Simmons, N A; Grand, S P

2008-08-22T23:59:59.000Z

19

Managing Upper extremity Fx's Sweden 10-Managing Pediatric  

E-Print Network [OSTI]

Managing Upper extremity Fx's Sweden 10- 05 1 Managing Pediatric Fractures Andrew Pennock, M extremity Fx's Sweden 10- 05 2 Children Are Not Miniature Adults! · Open Growth Plates · Remodeling is Changing "Citius, Altius, Fortius" - Faster, Higher, Stronger #12;Managing Upper extremity Fx's Sweden 10

Squire, Larry R.

20

Universit europenne d't 2005 "Val de Loire -patrimoine mondial" Tours-Angers-Nantes 26 au 30 septembre 2005 Le patrimoine culturel et industriel du Bas-Uruguay (Argentine,  

E-Print Network [OSTI]

septembre 2005 1 Le patrimoine culturel et industriel du Bas-Uruguay (Argentine, Uruguay) : typologie (Uruguay) Courriel : rboretto@adinet.com.uy Zone fluviale frontalière entre l'Argentine et l'Uruguay (v. cartouche fig. 1), le Bas- Uruguay (environ 350 km du nord au sud) est délimité à l'amont par le vaste lac

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Upper internals arrangement for a pressurized water reactor  

DOE Patents [OSTI]

In a pressurized water reactor with all of the in-core instrumentation gaining access to the core through the reactor head, each fuel assembly in which the instrumentation is introduced is aligned with an upper internals instrumentation guide-way. In the elevations above the upper internals upper support assembly, the instrumentation is protected and aligned by upper mounted instrumentation columns that are part of the instrumentation guide-way and extend from the upper support assembly towards the reactor head in hue with a corresponding head penetration. The upper mounted instrumentation columns are supported laterally at one end by an upper guide tube and at the other end by the upper support plate.

Singleton, Norman R; Altman, David A; Yu, Ching; Rex, James A; Forsyth, David R

2013-07-09T23:59:59.000Z

22

Absolute calibration of image plates for electrons at energy between 100 keV and 4 MeV  

SciTech Connect (OSTI)

We measured the absolute response of image plate (Fuji BAS SR2040) for electrons at energies between 100 keV and 4 MeV using an electron spectrometer. The electron source was produced from a short pulse laser irradiated on solid density targets. This paper presents the calibration results of image plate photon stimulated luminescence per electron at this energy range. The Monte Carlo radiation transport code MCNPX results are also presented for three representative incident angles onto the image plates and corresponding electron energy depositions at these angles. These provide a complete set of tools that allows extraction of our absolute calibration to other spectrometer setting at this electron energy range.

Chen Hui; Back, Norman L.; Eder, David C.; MacPhee, Andrew G.; Ping Yuan; Song, Peter M.; Throop, Alan [Lawrence Livermore National Laboratory, Livermore, California 94550-9234 (United States); Bartal, Teresa; Beg, F. N. [University of California, San Diego, La Jolla, California 92093 (United States); Link, Anthony J.; Van Woerkom, Linn [Ohio State University, Columbus, Ohio 43210 (United States)

2008-03-15T23:59:59.000Z

23

Surface preparation and plating  

SciTech Connect (OSTI)

This chapter covers electroplating and electroless nickel plating since coatings of this type play an important role in diamond turning technology. Items to be discussed include preparation of substrates prior to coating, plating defects such as pits and nodules and their influence on optics, the influence of stress in coatings, plating details for copper, gold, silver, and electroless nickel, and the importance of additives and their influence on grain size and structure of deposits. Some comments are made on future challenges that could be presented to the plating community to further improve the quality of coatings applied for diamond turning purposes. 60 references, 8 figures, 9 tables.

Dini, J.W.; Waldrop, F.B.; Reno, R.W.

1982-10-06T23:59:59.000Z

24

Nitrided Metallic Bipolar Plates  

Broader source: Energy.gov (indexed) [DOE]

nitrided surface treatment. In this approach, an electrically-conductive and corrosion-resistant chromium-nitride surface layer is formed on the bipolar plate component by...

25

A free plate surface and weak oceanic crust produce single-sided subduction on Earth  

E-Print Network [OSTI]

A free plate surface and weak oceanic crust produce single-sided subduction on Earth F. Crameri,1 P features of terrestrial plates: (1) the presence of a free deformable upper surface and (2) the presence of weak hydrated crust atop subducting slabs. We show that assuming a free surface, rather than

Kaus, Boris

26

Geochemical and rheological constraints on the dynamics of the oceanic upper mantle  

E-Print Network [OSTI]

I provide constraints on mantle convection through observations of the rheology and composition of the oceanic upper mantle. Convection cannot be directly observed, yet is a fundamental part of the plate tectonic cycle. ...

Warren, Jessica Mendelsohn

2007-01-01T23:59:59.000Z

27

Aperture-based antihydrogen gravity experiment: Parallel plate geometry  

SciTech Connect (OSTI)

An analytical model and a Monte Carlo simulation are presented of an experiment that could be used to determine the direction of the acceleration of antihydrogen due to gravity. The experiment would rely on methods developed by existing antihydrogen research collaborations. The configuration consists of two circular, parallel plates that have an axis of symmetry directed away from the center of the earth. The plates are separated by a small vertical distance, and include one or more pairs of circular barriers that protrude from the upper and lower plates, thereby forming an aperture between the plates. Antihydrogen annihilations that occur just beyond each barrier, within a “shadow” region, are asymmetric on the upper plate relative to the lower plate. The probability for such annihilations is determined for a point, line and spheroidal source of antihydrogen. The production of 100,000 antiatoms is predicted to be necessary for the aperture-based experiment to indicate the direction of free fall acceleration of antimatter, provided that antihydrogen is produced within a sufficiently small antiproton plasma at a temperature of 4 K.

Rocha, J. R.; Hedlof, R. M.; Ordonez, C. A. [Department of Physics, University of North Texas, Denton, Texas 76203 (United States)] [Department of Physics, University of North Texas, Denton, Texas 76203 (United States)

2013-10-15T23:59:59.000Z

28

Nitrided Metallic Bipolar Plates  

SciTech Connect (OSTI)

The objectives are: (1) Develop and optimize stainless steel alloys amenable to formation of a protective Cr-nitride surface by gas nitridation, at a sufficiently low cost to meet DOE targets and with sufficient ductility to permit manufacture by stamping. (2) Demonstrate capability of nitridation to yield high-quality stainless steel bipolar plates from thin stamped alloy foils (no significant stamped foil warping or embrittlement). (3) Demonstrate single-cell fuel cell performance of stamped and nitrided alloy foils equivalent to that of machined graphite plates of the same flow-field design ({approx}750-1,000 h, cyclic conditions, to include quantification of metal ion contamination of the membrane electrode assembly [MEA] and contact resistance increase attributable to the bipolar plates). (4) Demonstrate potential for adoption in automotive fuel cell stacks. Thin stamped metallic bipolar plates offer the potential for (1) significantly lower cost than currently-used machined graphite bipolar plates, (2) reduced weight/volume, and (3) better performance and amenability to high volume manufacture than developmental polymer/carbon fiber and graphite composite bipolar plates. However, most metals exhibit inadequate corrosion resistance in proton exchange membrane fuel cell (PEMFC) environments. This behavior leads to high electrical resistance due to the formation of surface oxides and/or contamination of the MEA by metallic ions, both of which can significantly degrade fuel cell performance. Metal nitrides offer electrical conductivities up to an order of magnitude greater than that of graphite and are highly corrosion resistant. Unfortunately, most conventional coating methods (for metal nitrides) are too expensive for PEMFC stack commercialization or tend to leave pinhole defects, which result in accelerated local corrosion and unacceptable performance.

Brady, Michael P [ORNL; Tortorelli, Peter F [ORNL; Pihl, Josh A [ORNL; Toops, Todd J [ORNL; More, Karren Leslie [ORNL; Meyer III, Harry M [ORNL; Vitek, John Michael [ORNL; Wang, Heli [National Renewable Energy Laboratory (NREL); Turner, John [National Renewable Energy Laboratory (NREL); Wilson, Mahlon [Los Alamos National Laboratory (LANL); Garzon, Fernando [Los Alamos National Laboratory (LANL); Rockward, Tommy [Los Alamos National Laboratory (LANL); Connors, Dan [GenCell Corp; Rakowski, Jim [Allegheny Ludlum; Gervasio, Don [Arizona State University

2008-01-01T23:59:59.000Z

29

Plating under reduced pressure  

SciTech Connect (OSTI)

Plating under reduced pressure was evaluated for both electroless nickel and electrodeposited copper systems. The objective was to reduce pitting of these coatings thereby further enhancing their usage for diamond turning applications. Cursory experiments with electroless nickel showed reduced porosity when deposition was done at around 500 torr. Detailed experiments with electrodeposited copper at around 100 torr provided similar results. Scanning tunneling microscopy was effectively used to show the improvement in the copper deposits plated under reduced pressure. Benefits included reduced surface roughness and finer and denser grain structure.

Dini, J.W.; Beat, T.G.; Cowden, W.C. (Lawrence Livermore National Lab., CA (United States)); Ryan, L.E.; Hewitt, W.B. (TRW, Inc., Redondo Beach, CA (United States))

1992-06-01T23:59:59.000Z

30

elementsair ceramic plate  

E-Print Network [OSTI]

many current day applications. Anything that creates waste heat (e.g. engines, computers, electronicsearth elementsair L ceramic plate Thermoelectric Module Construction for Low Temperature Gradient Power Generation Y. Meydbray, R. Singh, Ali Shakouri University of California at Santa Cruz, Electrical

31

Plates with incompatible prestrain  

E-Print Network [OSTI]

We study the effective elastic behavior of incompatibly prestrained plates, where the prestrain is independent of thickness as well as uniform through the thickness. We model such plates as three-dimensional elastic bodies with a prescribed pointwise stress-free state characterized by a Riemannian metric $G$ with the above properties, and seek the limiting behavior as the thickness goes to zero. Our results extand the prior analysis in M. Lewicka, M. R. Pakzad ESAIM Control Optim. Calc. Var. 17 (2011), no. 4. We first establish that the $\\Gamma$-limit is a Kirchhoff type bending. Further, we show that the minimum energy configuration contains non-trivial Kirchhoff type bending -- i.e., the scaling of the three-dimensional energy is of the order of the cube of the plate thickness -- if and only if the Riemann curvatures $R^3_{112}, R^3_{221}$ and $ R_{1212}$ of $G$ do not identically vanish. We demonstrate through examples, the existence of a new regime where the three above curvatures of $G$ vanish (while the mid-plane of the plate may or may not be flat), but the limiting configuration still has energy that is of the order of F\\"oppl - von K\\'arm\\'an plates. Finally, we apply these results to a model of nematic glass, including a characterization of the condition when the metric is immersible, for $G=\\mbox{Id}_3 +\\gamma\\vec n\\otimes \\vec n$ given in terms of the inhomogeneous unit director field distribution $\\vec n\\in\\mathbb{R}^3$.

Kaushik Bhattacharya; Marta Lewicka; Mathias Schäffner

2014-01-08T23:59:59.000Z

32

Fuel cell end plate structure  

DOE Patents [OSTI]

The end plates (16) of a fuel cell stack (12) are formed of a thin membrane. Pressure plates (20) exert compressive load through insulation layers (22, 26) to the membrane. Electrical contact between the end plates (16) and electrodes (50, 58) is maintained without deleterious making and breaking of electrical contacts during thermal transients. The thin end plate (16) under compressive load will not distort with a temperature difference across its thickness. Pressure plate (20) experiences a low thermal transient because it is insulated from the cell. The impact on the end plate of any slight deflection created in the pressure plate by temperature difference is minimized by the resilient pressure pad, in the form of insulation, therebetween.

Guthrie, Robin J. (East Hartford, CT); Katz, Murray (Newington, CT); Schroll, Craig R. (Glastonbury, CT)

1991-04-23T23:59:59.000Z

33

Channel plate for DNA sequencing  

DOE Patents [OSTI]

This invention is a channel plate that facilitates data compaction in DNA sequencing. The channel plate has a length, a width and a thickness, and further has a plurality of channels that are parallel. Each channel has a depth partially through the thickness of the channel plate. Additionally an interface edge permits electrical communication across an interface through a buffer to a deposition membrane surface. 15 figs.

Douthart, R.J.; Crowell, S.L.

1998-01-13T23:59:59.000Z

34

Carbon-assisted flyer plates  

DOE Patents [OSTI]

A laser driven flyer plate utilizing an optical fiber connected to a laser. The end of the optical fiber has a layer of carbon and a metal layer deposited onto it. The carbon layer provides the laser induced plasma which is superior to the plasma produced from most metals. The carbon layer plasma is capable of providing a flatter flyer plate, converting more of the laser energy to driving plasma, promoting a higher flyer plate acceleration, and providing a more uniform pulse behind the plate. In another embodiment, the laser is in optical communication with a substrate onto which a layer of carbon and a layer of metal have been deposited.

Stahl, David B. (Los Alamos, NM); Paisley, Dennis L. (Santa Fe, NM)

1994-01-01T23:59:59.000Z

35

Metal vapor arc ion plating  

DOE Patents [OSTI]

A method and apparatus for ion plating are described. The apparatus uses more negative than a first electrode voltage in a vacuum arc remelt system to attract low energy ions from the anode electrode to the article to be plated. 2 figs.

Bertram, L.A.; Fisher, R.W.; Mattox, D.M.; Zanner, F.J.

1986-09-09T23:59:59.000Z

36

Results of irradiated cladding tests and clad plate experiments  

SciTech Connect (OSTI)

Two aspects critical to the fracture behavior of three-wire stainless steel cladding were investigated by the Heavy-Section Steel Technology (HSST) Program: (1) radiation effects on cladding strength and toughness, and (2) the response of mechanically loaded, flawed structures in the presence of cladding (clad plate experiments). Postirradiation testing results show that, in the test temperature range from /minus/125 to 288/degree/C, the yield strength increased, and ductility insignificantly increased, while there was almost no change in ultimate tensile strength. All cladding exhibited ductile-to-brittle transition behavior during Charpy impact testing. Radiation damage decreased the Charpy upper-shelf energy by 15 to 20% and resulted in up to 28/degree/C shifts of the Charpy impact transition temperature. Results of irradiated 12.5-mm-thick compact specimens (0.5TCS) show consistent decreases in the ductile fracture toughness, J/sub Ic/, and the tearing modulus. Results from clad plate tests have shown that (1) a tough surface layer composed of cladding and/or heat-affected zone has arrested running flaws under conditions where unclad plates have ruptured, and (2) the residual load-bearing capacity of clad plates with large subclad flaws significantly exceeded that of an unclad plate. 13 figs., 1 tab.

Haggag, F.M.; Iskander, S.K.

1988-01-01T23:59:59.000Z

37

High loading uranium fuel plate  

DOE Patents [OSTI]

Two embodiments of a high uranium fuel plate are disclosed which contain a meat comprising structured uranium compound confined between a pair of diffusion bonded ductile metal cladding plates uniformly covering the meat, the meat having a uniform high fuel loading comprising a content of uranium compound greater than about 45 Vol. % at a porosity not greater than about 10 Vol. %. In a first embodiment, the meat is a plurality of parallel wires of uranium compound. In a second embodiment, the meat is a dispersion compact containing uranium compound. The fuel plates are fabricated by a hot isostatic pressing process.

Wiencek, Thomas C. (Bolingbrook, IL); Domagala, Robert F. (Indian Head Park, IL); Thresh, Henry R. (Palos Heights, IL)

1990-01-01T23:59:59.000Z

38

Carbon-assisted flyer plates  

DOE Patents [OSTI]

A laser driven flyer plate is described utilizing an optical fiber connected to a laser. The end of the optical fiber has a layer of carbon and a metal layer deposited onto it. The carbon layer provides the laser induced plasma which is superior to the plasma produced from most metals. The carbon layer plasma is capable of providing a flatter flyer plate, converting more of the laser energy to driving plasma, promoting a higher flyer plate acceleration, and providing a more uniform pulse behind the plate. In another embodiment, the laser is in optical communication with a substrate onto which a layer of carbon and a layer of metal have been deposited. 2 figures.

Stahl, D.B.; Paisley, D.L.

1994-04-12T23:59:59.000Z

39

Plates for vacuum thermal fusion  

DOE Patents [OSTI]

A process for effectively bonding arbitrary size or shape substrates. The process incorporates vacuum pull down techniques to ensure uniform surface contact during the bonding process. The essence of the process for bonding substrates, such as glass, plastic, or alloys, etc., which have a moderate melting point with a gradual softening point curve, involves the application of an active vacuum source to evacuate interstices between the substrates while at the same time providing a positive force to hold the parts to be bonded in contact. This enables increasing the temperature of the bonding process to ensure that the softening point has been reached and small void areas are filled and come in contact with the opposing substrate. The process is most effective where at least one of the two plates or substrates contain channels or grooves that can be used to apply vacuum between the plates or substrates during the thermal bonding cycle. Also, it is beneficial to provide a vacuum groove or channel near the perimeter of the plates or substrates to ensure bonding of the perimeter of the plates or substrates and reduce the unbonded regions inside the interior region of the plates or substrates.

Davidson, James C. (Livermore, CA); Balch, Joseph W. (Livermore, CA)

2002-01-01T23:59:59.000Z

40

Upper Los Alamos Canyon Cleanup  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

septic tanks, sanitary and industrial waste lines, storm drains, incinerators, transformer sites, and areas in which soil has been contaminated. The Upper Los Alamos Canyon...

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Next Generation Bipolar Plates for Automotive PEM Fuel Cells  

SciTech Connect (OSTI)

The results of a successful U.S. Department of Energy (DoE) funded two-year $2.9 MM program lead by GrafTech International Inc. (GrafTech) are reported and summarized. The program goal was to develop the next generation of high temperature proton exchange membrane (PEM) fuel cell bipolar plates for use in transportation fuel cell applications operating at temperatures up to 120 °C. The bipolar plate composite developed during the program is based on GrafTech’s GRAFCELL? resin impregnated flexible graphite technology and makes use of a high temperature Huntsman Advanced Materials resin system which extends the upper use temperature of the composite to the DoE target. High temperature performance of the new composite is achieved with the added benefit of improvements in strength, modulus, and dimensional stability over the incumbent resin systems. Other physical properties, including thermal and electrical conductivity of the new composite are identical to or not adversely affected by the new resin system. Using the new bipolar plate composite system, machined plates were fabricated and tested in high temperature single-cell fuel cells operating at 120 °C for over 1100 hours by Case Western Reserve University. Final verification of performance was done on embossed full-size plates which were fabricated and glued into bipolar plates by GrafTech. Stack testing was done on a 10-cell full-sized stack under a simulated drive cycle protocol by Ballard Power Systems. Freeze-thaw performance was conducted by Ballard on a separate 5-cell stack and shown to be within specification. A third stack was assembled and shipped to Argonne National Laboratory for independent performance verification. Manufacturing cost estimate for the production of the new bipolar plate composite at current and high volume production scenarios was performed by Directed Technologies Inc. (DTI). The production cost estimates were consistent with previous DoE cost estimates performed by DTI for the DoE on metal plates. The final result of DTI’s analysis for the high volume manufacturing scenario ($6.85 /kW) came in slightly above the DoE target of $3 to $5/kW. This estimate was derived using a “Best Case Scenario” for many of the production process steps and raw material costs with projections to high volumes. Some of the process improvements assumed in this “Best Case Scenario” including high speed high impact forming and solvent-less resins, have not yet been implemented, but have a high probability of potential success.

Orest Adrianowycz; Julian Norley; David J. Stuart; David Flaherty; Ryan Wayne; Warren Williams; Roger Tietze; Yen-Loan H. Nguyen; Tom Zawodzinski; Patrick Pietrasz

2010-04-15T23:59:59.000Z

42

Corrosion resistant metallic bipolar plate  

DOE Patents [OSTI]

A corrosion resistant, electrically conductive component such as a bipolar plate for a PEM fuel cell includes 20 55% Cr, balance base metal such as Ni, Fe, or Co, the component having thereon a substantially external, continuous layer of chromium nitride.

Brady, Michael P. (Oak Ridge, TN); Schneibel, Joachim H. (Knoxville, TN); Pint, Bruce A. (Knoxville, TN); Maziasz, Philip J. (Oak Ridge, TN)

2007-05-01T23:59:59.000Z

43

Landscape Evolution at an Active Plate Margin  

E-Print Network [OSTI]

Landscape Evolution at an Active Plate Margin edited and compiled by David R. Jessey and Robert E;32009 Desert Symposium Table of contents Landscape evolution at an active plate margin: a field trip

de Lijser, Peter

44

CNEA Fresh Fuel Plate Characterization Summary Report  

SciTech Connect (OSTI)

Characterization summary report outlining the findings of the fresh fuel examinations of the plates received from CNEA.

D. Keiser; F. Rice

2012-02-01T23:59:59.000Z

45

2011 Vibrations -1 VIBRATION OF PLATES & BARS  

E-Print Network [OSTI]

of plates of different shapes using Chladni patterns. APPARATUS: Function generator in FFTSCOPE, long and short flat bars, Chladni plates, salt, salt trays INTRODUCTION he equations of vibrational motion. The solutions become very complicated for the free boundary condition at the perimeter of the plate. The Chladni

Glashausser, Charles

46

Draft Inventory Upper Snake Province  

E-Print Network [OSTI]

Draft Inventory Upper Snake Province Submitted To The Northwest Power and Conservation Council Portland, Oregon Prepared by December 2004 #12;BOI043620012.DOC/KG ii Contents Section Page Inventory

47

Electroless metal plating of plastics  

DOE Patents [OSTI]

Process for plating main group metals on aromatic polymers is carried out by the use of a nonaqueous solution of a salt of an alkali metal in a positive valence state and a main group metal in a negative valence state with contact between the solution and polymer providing a redox reaction causing the deposition of the main group metal and the reduction of the polymer. Products from the process exhibit useful decorative and electrical properties.

Krause, Lawrence J. (Chicago, IL)

1986-01-01T23:59:59.000Z

48

Electroless metal plating of plastics  

DOE Patents [OSTI]

Process for plating main group metals on aromatic polymers is carried out by the use of a nonaqueous solution of a salt of an alkali metal in a positive valence state and a main group metal in a negative valence state with contact between the solution and polymer providing a redox reaction causing the deposition of the main group metal and the reduction of the polymer. Products from the process exhibit useful decorative and electrical properties.

Krause, L.J.

1982-09-20T23:59:59.000Z

49

Electroless metal plating of plastics  

DOE Patents [OSTI]

Process for plating main group metals on aromatic polymers is carried out by the use of a nonaqueous solution of a salt of an alkali metal in a positive valence state and a main group metal in a negative valence state with contact between the solution and polymer providing a redox reaction causing the deposition of the main group metal and the reduction of the polymer. Products from the process exhibit useful decorative and electrical properties.

Krause, Lawrence J. (Chicago, IL)

1984-01-01T23:59:59.000Z

50

Separator plate for a fuel cell  

DOE Patents [OSTI]

A separator plate is described for a fuel cell comprising an anode current collector, a cathode current collector and a main plate, the main plate disposed between the anode current collector and the cathode current collector. The anode current collector forms a flattened peripheral wet seal structure and manifold wet seal structure on the anode side of the separator plate and the cathode current collector forms a flattened peripheral wet seal structure and manifold wet seal structure on the cathode side of the separator plate. In this manner, the number of components required to manufacture and assemble a fuel cell stack is reduced. 9 figs.

Petri, R.J.; Meek, J.; Bachta, R.P.; Marianowski, L.G.

1996-04-02T23:59:59.000Z

51

Separator plate for a fuel cell  

DOE Patents [OSTI]

A separator plate for a fuel cell comprising an anode current collector, a cathode current collector and a main plate, the main plate disposed between the anode current collector and the cathode current collector. The anode current collector forms a flattened peripheral wet seal structure and manifold wet seal structure on the anode side of the separator plate and the cathode current collector forms a flattened peripheral wet seal structure and manifold wet seal structure on the cathode side of the separator plate. In this manner, the number of components required to manufacture and assemble a fuel cell stack is reduced.

Petri, Randy J. (Crete, IL); Meek, John (Downers Grove, IL); Bachta, Robert P. (Chicago, IL); Marianowski, Leonard G. (Mount Prospect, IL)

1996-01-01T23:59:59.000Z

52

Measurement of two-phase flow at the core upper plenum interface under simulated reflood conditions  

SciTech Connect (OSTI)

Objectives of the Instrument Development Loop program were to simulate flows at the core/upper plenum interface during the reflood phase of a LOCA and to develop instruments for measuring mass-flows at this interface. A tie plate drag body was developed and tested successfully, and the data obtained were shown to be equivalent to pressure drops. The tie-plate drag body gave useful measurements in pure downflow, and the drag/turbine combination correlates with mass flow for high upflow. (DLC)

Thomas, D.G.; Combs, S.K.; Bagwell, M.E.

1980-01-01T23:59:59.000Z

53

An early history of pure shear in the upper plate of the raft river  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCT Biomass Facility Jump to:Operations at the Cosoappraisal

54

Rapidly Moving Divertor Plates In A Tokamak  

SciTech Connect (OSTI)

It may be possible to replace conventional actively cooled tokamak divertor plates with a set of rapidly moving, passively cooled divertor plates on rails. These plates would absorb the plasma heat flux with their thermal inertia for ~10-30 sec, and would then be removed from the vessel for processing. When outside the tokamak, these plates could be cooled, cleaned, recoated, inspected, and then returned to the vessel in an automated loop. This scheme could provide nearoptimal divertor surfaces at all times, and avoid the need to stop machine operation for repair of damaged or eroded plates. We describe various possible divertor plate designs and access geometries, and discuss an initial design for a movable and removable divertor module for NSTX-U.

S. Zweben

2011-05-16T23:59:59.000Z

55

Zirconium Plate Measuring Instrument (ZPMI) Design Report  

SciTech Connect (OSTI)

This report describes the design of a device intended to measure radiation-induced strain in zirconium plate specimens as a function of neutron fluence.

K. Davies; J. H. Jackson

2013-10-01T23:59:59.000Z

56

Fuel cell cooler-humidifier plate  

DOE Patents [OSTI]

A cooler-humidifier plate for use in a proton exchange membrane (PEM) fuel cell stack assembly is provided. The cooler-humidifier plate combines functions of cooling and humidification within the fuel cell stack assembly, thereby providing a more compact structure, simpler manifolding, and reduced reject heat from the fuel cell. Coolant on the cooler side of the plate removes heat generated within the fuel cell assembly. Heat is also removed by the humidifier side of the plate for use in evaporating the humidification water. On the humidifier side of the plate, evaporating water humidifies reactant gas flowing over a moistened wick. After exiting the humidifier side of the plate, humidified reactant gas provides needed moisture to the proton exchange membranes used in the fuel cell stack assembly. The invention also provides a fuel cell plate that maximizes structural support within the fuel cell by ensuring that the ribs that form the boundaries of channels on one side of the plate have ends at locations that substantially correspond to the locations of ribs on the opposite side of the plate.

Vitale, Nicholas G. (Albany, NY); Jones, Daniel O. (Glenville, NY)

2000-01-01T23:59:59.000Z

57

Flat-Plate Photovoltaic Module Basics  

Broader source: Energy.gov [DOE]

Flat-plate photovoltaic (PV) modules are made of several components, including the front surface materials, encapsulant, rear surface, and frame.

58

AGU Monograph, Plate Boundary Zones, in press. Page 1 Crustal Block Rotations and Plate Coupling  

E-Print Network [OSTI]

AGU Monograph, Plate Boundary Zones, in press. Page 1 Crustal Block Rotations and Plate Coupling that considering both block rotations and fault locking significantly improves the fit to the data over models by locking on #12;AGU Monograph, Plate Boundary Zones, in press. Page 2 block-bounding faults and apply

McCaffrey, Robert

59

Calibration of a Thomson parabola ion spectrometer and Fujifilm imaging plate detectors for protons, deuterons, and alpha particles  

SciTech Connect (OSTI)

A Thomson parabola ion spectrometer has been designed for use at the Multiterawatt (MTW) laser facility at the Laboratory for Laser Energetics (LLE) at University of Rochester. This device uses parallel electric and magnetic fields to deflect particles of a given mass-to-charge ratio onto parabolic curves on the detector plane. Once calibrated, the position of the ions on the detector plane can be used to determine the particle energy. The position dispersion of both the electric and magnetic fields of the Thomson parabola was measured using monoenergetic proton and alpha particle beams from the SUNY Geneseo 1.7 MV tandem Pelletron accelerator. The sensitivity of Fujifilm BAS-TR imaging plates, used as a detector in the Thomson parabola, was also measured as a function of the incident particle energy over the range from 0.6 MeV to 3.4 MeV for protons and deuterons and from 0.9 MeV to 5.4 MeV for alpha particles. The device was used to measure the energy spectrum of laser-produced protons at MTW.

Freeman, C. G.; Canfield, M. J.; Graeper, G. B.; Lombardo, A. T.; Stillman, C. R.; Padalino, S. J. [Physics Department, SUNY Geneseo, Geneseo, New York 14454 (United States); Fiksel, G.; Stoeckl, C.; Mileham, C.; Sangster, T. C. [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States); Sinenian, N.; Frenje, J. A. [Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

2011-07-15T23:59:59.000Z

60

Whole Earth Structure and Plate Tectonics  

E-Print Network [OSTI]

Whole Earth Structure and Plate Tectonics Earth Structure (2nd Edition), 2004 W.W. Norton & Co, New York Slide show by Ben van der Pluijm © WW Norton; unless noted otherwise #12;© EarthStructure (2nd ed evolution of Earth: from continental drift (early 1900's) to sea-floor spreading (early 1960's) to plate

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Vacuum fusion bonding of glass plates  

DOE Patents [OSTI]

An improved apparatus and method for vacuum fusion bonding of large, patterned glass plates. One or both glass plates are patterned with etched features such as microstructure capillaries and a vacuum pumpout moat, with one plate having at least one hole therethrough for communication with a vacuum pumpout fixture. High accuracy alignment of the plates is accomplished by a temporary clamping fixture until the start of the fusion bonding heat cycle. A complete, void-free fusion bond of seamless, full-strength quality is obtained through the plates; because the glass is heated well into its softening point and because of a large, distributed force that is developed that presses the two plates together from the difference in pressure between the furnace ambient (high pressure) and the channeling and microstructures in the plates (low pressure) due to the vacuum drawn. The apparatus and method may be used to fabricate microcapillary arrays for chemical electrophoresis; for example, any apparatus using a network of microfluidic channels embedded between plates of glass or similar moderate melting point substrates with a gradual softening point curve, or for assembly of glass-based substrates onto larger substrates, such as in flat panel display systems.

Swierkowski, Steve P. (Livermore, CA); Davidson, James C. (Livermore, CA); Balch, Joseph W. (Livermore, CA)

2001-01-01T23:59:59.000Z

62

Vacuum fusion bonding of glass plates  

DOE Patents [OSTI]

An improved apparatus and method for vacuum fusion bonding of large, patterned glass plates. One or both glass plates are patterned with etched features such as microstructure capillaries and a vacuum pumpout moat, with one plate having at least one hole therethrough for communication with a vacuum pumpout fixture. High accuracy alignment of the plates is accomplished by a temporary clamping fixture until the start of the fusion bonding heat cycle. A complete, void-free fusion bond of seamless, full-strength quality is obtained through the plates; because the glass is heated well into its softening point and because of a large, distributed force that is developed that presses the two plates together from the difference in pressure between the furnace ambient (high pressure) and the channeling and microstructures in the plates (low pressure) due to the vacuum drawn. The apparatus and method may be used to fabricate microcapillary arrays for chemical electrophoresis; for example, any apparatus using a network of microfluidic channels embedded between plates of glass or similar moderate melting point substrates with a gradual softening point curve, or for assembly of glass-based substrates onto larger substrates, such as in flat panel display systems.

Swierkowski, Steve P. (Livermore, CA); Davidson, James C. (Livermore, CA); Balch, Joseph W. (Livermore, CA)

2000-01-01T23:59:59.000Z

63

Fuel Cell Stack Components BipolarPlate  

E-Print Network [OSTI]

Fuel Cell Stack Components Fuel Processor BipolarPlate Cathode+ Anode- Electrolyte H+ H+ HYDROGEN · Low-Platinum and Platinum-Free Catalysts for Oxygen Reduction at PEM Fuel Cell Cathodes · Low-Platinum-Loading Catalysts for Fuel Cells · Scale-Up of Carbon/Carbon Composite Bipolar Plates #12;Stack Component Projects

64

Shock wave absorber having apertured plate  

DOE Patents [OSTI]

The shock or energy absorber disclosed herein utilizes an apertured plate maintained under the normal level of liquid flowing in a piping system and disposed between the normal liquid flow path and a cavity pressurized with a compressible gas. The degree of openness (or porosity) of the plate is between 0.01 and 0.60. The energy level of a shock wave travelling down the piping system thus is dissipated by some of the liquid being jetted through the apertured plate toward the cavity. The cavity is large compared to the quantity of liquid jetted through the apertured plate, so there is little change in its volume. The porosity of the apertured plate influences the percentage of energy absorbed.

Shin, Yong W. (Western Springs, IL); Wiedermann, Arne H. (Chicago Heights, IL); Ockert, Carl E. (Vienna, VA)

1985-01-01T23:59:59.000Z

65

Shock wave absorber having apertured plate  

DOE Patents [OSTI]

The shock or energy absorber disclosed herein utilizes an apertured plate maintained under the normal level of liquid flowing in a piping system and disposed between the normal liquid flow path and a cavity pressurized with a compressible gas. The degree of openness (or porosity) of the plate is between 0.01 and 0.60. The energy level of a shock wave travelling down the piping system thus is dissipated by some of the liquid being jetted through the apertured plate toward the cavity. The cavity is large compared to the quantity of liquid jetted through the apertured plate, so there is little change in its volume. The porosity of the apertured plate influences the percentage of energy absorbed.

Shin, Y.W.; Wiedermann, A.H.; Ockert, C.E.

1983-08-26T23:59:59.000Z

66

Undrained behavior of plate anchors subjected to general loading  

E-Print Network [OSTI]

This study presents a method for predicting the undrained behavior of plate anchors, including out-of-plane loading of simple plates and performance of suction embedded plate anchors (SEPLA). Three dimensional finite element models are used...

Yang, Ming

2010-01-14T23:59:59.000Z

67

Upper Great Plains Home page  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearchScheduledProductionCCEIResearch Upper Great Plains Service

68

The effect of periodic unsteady wakes on boundary layer transition and heat transfer on a curved plate  

E-Print Network [OSTI]

generator cross section looking upstream: l. Upper wall, 2. Lower wall, 3. Side wall, 4 Timing belt pulley, 5. Rotating disk, 6. 2. 0 mm diameter cylindrical rod. Test Section: 1. Traversing system, 2. Nozzle, 3. Wake generator, 4. Electric motor, 5...-dimensional mean velocity at different s/s. locations on the heat transfer plate for 0= 0. 0 (0 rods). 39 41 43 Figure 13. Figure 14. Figure 15. Figure 16. Non-dimensional mean velocity at different s/s, locations on the heat transfer plate for Q= 1. 033...

Wright, Lance Cole

1996-01-01T23:59:59.000Z

69

automatic license plate readers: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to causalism, building on Frankfurts concept of guidance. Ezio Di Nucci 151 Lesson 3. Plate Tectonics Overview Geosciences Websites Summary: Lesson 3. Plate Tectonics...

70

Plate subrotations Marco Cuffaro,1,2  

E-Print Network [OSTI]

to compute relative motion of two plates not sharing a margin. [3] Relative motions are important contemporaneous rotation about its axis, or as a car that starts swinging while traveling. [8] In this paper, we

Doglioni, Carlo

71

Characterization of Tri-lab Tantalum Plate.  

SciTech Connect (OSTI)

This report provides a detailed characterization Tri-lab Tantalum (Ta) plate jointly purchased from HCStark Inc. by Sandia, Los Alamos and Lawrence Livermore National Laboratories. Data in this report was compiled from series of material and properties characterization experiments carried out at Sandia (SNL) and Los Alamos (LANL) Laboratories through a leveraged effort funded by the C2 campaign. Results include microstructure characterization detailing the crystallographic texture of the material and an increase in grain size near the end of the rolled plate. Mechanical properties evaluations include, compression cylinder, sub-scale tension specimen, micohardness and instrumented indentation testing. The plate was found to have vastly superior uniformity when compare with previously characterized wrought Ta material. Small but measurable variations in microstructure and properties were noted at the end, and at the top and bottom edges of the plate.

Buchheit, Thomas E.; Cerreta, Ellen K.; Deibler, Lisa Anne; Chen, Shu-Rong; Michael, Joseph R.

2014-09-01T23:59:59.000Z

72

Geology of the upper James River area Mason County, Texas  

E-Print Network [OSTI]

of tbe Riley foraation ~ ~ ~ ~ . ~ ~ ~ i 19 XV. Weathered surfaoo of bish' exhibiting typioal eoabbago- bead stru001zo ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ a ~ ~ ~ ~ ~ ~ ~ ~ ~ V, Rfohera @bish ooours 1n ths. aiddlo of tho Poiat Peak shale aeabor, Tho biobera bas Man... froa the outcrop aad lies in an 0'1eFCRI$04 positions ~ ~ ~ i ~ ~ ~ ~ ~ ~ ~ VI, Point peak shale on the nest bask of Roy Crmk near the northern interseotion of Rey Creek and the Jaaes RiVsr Roadp ' ~ ~ ~ ~ ~ ~ i...

White, Dixon Nesbit

1961-01-01T23:59:59.000Z

73

Composite bipolar plate for electrochemical cells  

DOE Patents [OSTI]

A bipolar separator plate for fuel cells consists of a molded mixture of a vinyl ester resin and graphite powder. The plate serves as a current collector and may contain fluid flow fields for the distribution of reactant gases. The material is inexpensive, electrically conductive, lightweight, strong, corrosion resistant, easily mass produced, and relatively impermeable to hydrogen gas. The addition of certain fiber reinforcements and other additives can improve the properties of the composite material without significantly increasing its overall cost.

Wilson, Mahlon S. (Los Alamos, NM); Busick, Deanna N. (Los Alamos, NM)

2001-01-01T23:59:59.000Z

74

The analysis of orthogonally stiffened plates  

E-Print Network [OSTI]

THE ANALTSIS OP ORTHOGONALLY STIPPENED PLATES A Thesis By VIRGIL O'HEAL BBNNBTT, JR. Submitted to the Graduate College of the Texas A&M University in partial fulfi. llment of the requirements for the degree of MASTER OP SCIENCB Msy 1966... Major Subject. "Aerospace Engineering THE ANALYSIS OF ORTHOGONALLY BTIFFBNED PLATES A Thesis By VIRGIL O'NBAL BBNNETT, JR. Approved as to style and content by: (Chai. n Committee) (Head of Department) (Ne er) (Member ) Hsy 1966 ACKNOWLEICMENTS...

Bennett, Virgil O'Neal

2012-06-07T23:59:59.000Z

75

Lighting system with heat distribution face plate  

DOE Patents [OSTI]

Lighting systems having a light source and a thermal management system are provided. The thermal management system includes synthetic jet devices, a heat sink and a heat distribution face plate. The synthetic jet devices are arranged in parallel to one and other and are configured to actively cool the lighting system. The heat distribution face plate is configured to radially transfer heat from the light source into the ambient air.

Arik, Mehmet; Weaver, Stanton Earl; Stecher, Thomas Elliot; Kuenzler, Glenn Howard; Wolfe, Jr., Charles Franklin; Li, Ri

2013-09-10T23:59:59.000Z

76

Corrosion test cell for bipolar plates  

DOE Patents [OSTI]

A corrosion test cell for evaluating corrosion resistance in fuel cell bipolar plates is described. The cell has a transparent or translucent cell body having a pair of identical cell body members that seal against opposite sides of a bipolar plate. The cell includes an anode chamber and an cathode chamber, each on opposite sides of the plate. Each chamber contains a pair of mesh platinum current collectors and a catalyst layer pressed between current collectors and the plate. Each chamber is filled with an electrolyte solution that is replenished with fluid from a much larger electrolyte reservoir. The cell includes gas inlets to each chamber for hydrogen gas and air. As the gases flow into a chamber, they pass along the platinum mesh, through the catalyst layer, and to the bipolar plate. The gas exits the chamber through passageways that provide fluid communication between the anode and cathode chambers and the reservoir, and exits the test cell through an exit port in the reservoir. The flow of gas into the cell produces a constant flow of fresh electrolyte into each chamber. Openings in each cell body is member allow electrodes to enter the cell body and contact the electrolyte in the reservoir therein. During operation, while hydrogen gas is passed into one chamber and air into the other chamber, the cell resistance is measured, which is used to evaluate the corrosion properties of the bipolar plate.

Weisbrod, Kirk R. (Los Alamos, NM)

2002-01-01T23:59:59.000Z

77

Denaturing Urea PAGE -Large Gel Preparation of Glass Plates  

E-Print Network [OSTI]

for short glass plate. Wear gloves. 3. Place long glass plate on 2 foam rectangles. Set up spacers and short32 Denaturing Urea PAGE - Large Gel Preparation of Glass Plates 1. Clean glass plates and comb pipette, add 5 drops of dichlorodimethylsilane (Aldrich D6,082-6) to 5 mls of acetone in diposable glass

Aris, John P.

78

REVIEW OF SCIENTIFIC INSTRUMENTS 82, 073301 (2011) Calibration of a Thomson parabola ion spectrometer and Fujifilm imaging  

E-Print Network [OSTI]

accelerator. The sensitivity of Fujifilm BAS-TR imaging plates, used as a detector in the Thomson parabola

79

Upper Cumberland EMC- Energy Efficiency Rebate Programs  

Broader source: Energy.gov [DOE]

Upper Cumberland Electric Membership Corporation (UCEMC), in collaboration with the Tennessee Valley Authority, offers incentives for its customers to purchase and install energy efficient...

80

Recovery process for electroless plating baths  

DOE Patents [OSTI]

A process for removing, from spent electroless metal plating bath solutions, accumulated byproducts and counter-ions that have deleterious effects on plating. The solution, or a portion thereof, is passed through a selected cation exchange resin bed in hydrogen form, the resin selected from strong acid cation exchangers and combinations of intermediate acid cation exchangers with strong acid cation exchangers. Sodium and nickel ions are sorbed in the selected cation exchanger, with little removal of other constituents. The remaining solution is subjected to sulfate removal through precipitation of calcium sulfate hemihydrate using, sequentially, CaO and then CaCO.sub.3. Phosphite removal from the solution is accomplished by the addition of MgO to form magnesium phosphite trihydrate. The washed precipitates of these steps can be safely discarded in nontoxic land fills, or used in various chemical industries. Finally, any remaining solution can be concentrated, adjusted for pH, and be ready for reuse. The plating metal can be removed from the exchanger with sulfuric acid or with the filtrate from the magnesium phosphite precipitation forming a sulfate of the plating metal for reuse. The process is illustrated as applied to processing electroless nickel plating baths.

Anderson, Roger W. (Farragut, TN); Neff, Wayne A. (Knoxville, TN)

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Recovery process for electroless plating baths  

DOE Patents [OSTI]

A process is described for removing, from spent electroless metal plating bath solutions, accumulated byproducts and counter-ions that have deleterious effects on plating. The solution, or a portion thereof, is passed through a selected cation exchange resin bed in hydrogen form, the resin selected from strong acid cation exchangers and combinations of intermediate acid cation exchangers with strong acid cation exchangers. Sodium and nickel ions are sorbed in the selected cation exchanger, with little removal of other constituents. The remaining solution is subjected to sulfate removal through precipitation of calcium sulfate hemihydrate using, sequentially, CaO and then CaCO[sub 3]. Phosphite removal from the solution is accomplished by the addition of MgO to form magnesium phosphite trihydrate. The washed precipitates of these steps can be safely discarded in nontoxic land fills, or used in various chemical industries. Finally, any remaining solution can be concentrated, adjusted for pH, and be ready for reuse. The plating metal can be removed from the exchanger with sulfuric acid or with the filtrate from the magnesium phosphite precipitation forming a sulfate of the plating metal for reuse. The process is illustrated as applied to processing electroless nickel plating baths. 18 figs.

Anderson, R.W.; Neff, W.A.

1992-05-12T23:59:59.000Z

82

Highly conductive composites for fuel cell flow field plates and bipolar plates  

DOE Patents [OSTI]

This invention provides a fuel cell flow field plate or bipolar plate having flow channels on faces of the plate, comprising an electrically conductive polymer composite. The composite is composed of (A) at least 50% by weight of a conductive filler, comprising at least 5% by weight reinforcement fibers, expanded graphite platelets, graphitic nano-fibers, and/or carbon nano-tubes; (B) polymer matrix material at 1 to 49.9% by weight; and (C) a polymer binder at 0.1 to 10% by weight; wherein the sum of the conductive filler weight %, polymer matrix weight % and polymer binder weight % equals 100% and the bulk electrical conductivity of the flow field or bipolar plate is at least 100 S/cm. The invention also provides a continuous process for cost-effective mass production of the conductive composite-based flow field or bipolar plate.

Jang, Bor Z; Zhamu, Aruna; Song, Lulu

2014-10-21T23:59:59.000Z

83

The Statistical Upper Mantle Assemblage Anders Meibom*  

E-Print Network [OSTI]

Mantle Assemblage', which forms as the result of long-term plate tectonic recycling of sedimentary-3] and noble gases [4] has led to the notion that the source region for "normal" MORB (N-MORB), referred

Anderson, Don L.

84

Quality assurance in small plating shops  

SciTech Connect (OSTI)

The potential for electroless nickel coatings in oilfield and petrochemical applications is quite high. The greatest obstacle to their use has been a reputation for poor quality due to a lack of quality control in many plating shops. To overcome this, electroless nickel shops should not only have a quality control program in their operation, but must also document its use and success. This article describes how a plating shoe can develop the necessary procedures, manuals, and paperwork trail to offer quality assurance and to satisfy customers.

McNabb, W.J. (Electroless Nickel Plating of Louisiana, Hammond, LA (United States))

1993-10-01T23:59:59.000Z

85

Ponderomotive phase plate for transmission electron microscopes  

DOE Patents [OSTI]

A ponderomotive phase plate system and method for controllably producing highly tunable phase contrast transfer functions in a transmission electron microscope (TEM) for high resolution and biological phase contrast imaging. The system and method includes a laser source and a beam transport system to produce a focused laser crossover as a phase plate, so that a ponderomotive potential of the focused laser crossover produces a scattering-angle-dependent phase shift in the electrons of the post-sample electron beam corresponding to a desired phase contrast transfer function.

Reed, Bryan W. (Livermore, CA)

2012-07-10T23:59:59.000Z

86

Upper White River Watershed Alliance Upper White River Watershed Alliance (UWRWA)  

E-Print Network [OSTI]

Upper White River Watershed Alliance Upper White River Watershed Alliance (UWRWA) P.O. Box 2065 integrity of the White River ecosystem. To successfully accomplish the vision of UWRWA, a 16-county was formed. It exists to improve and protect water quality on a watershed basis in the larger Upper White

87

Fabrication of nickel microbump on aluminum using electroless nickel plating  

SciTech Connect (OSTI)

Fabrication of nickel microbumps on an aluminum electrode using a nickel displacement and a direct nickel plating process was investigated. Electroless nickel plating reaction with hypophosphite as a reducing agent was not initiated on the aluminum substrate, because aluminum does not have catalytic action on the oxidation of hypophosphite. Accordingly, nickel was initially deposited on the aluminum using nickel displacement plating for the initiation of the electroless plating. Nickel bumps on the aluminum electrode were fabricated by treatment of the nickel displacement plating followed by electroless nickel plating. Nickel microbumps also can be formed on the aluminum electrode without the displacement plating process. Activation of the aluminum surface is an indispensable process to initiate electroless nickel plating. Uniform bumps 20 {micro}m wide and 15 {micro}m high with good configuration were obtained by direct nickel plating after being activated with dimethyl amine borane.

Watanabe, H.; Honma, H. [Kanto Gakuin Univ., Yokohama, Kanagawa (Japan). Faculty of Engineering

1997-02-01T23:59:59.000Z

88

Metallic Bipolar Plates with Composite Coatings  

E-Print Network [OSTI]

that is available in sheet form For corrosion resistance, apply a coating that is a composite of two materials: ­ Filler to provide electrical conductivity · Candidate Materials: graphite, carbon black, TiB2 and CaB6Metallic Bipolar Plates with Composite Coatings Jennifer Mawdsley Argonne National Laboratory Fuel

89

Brazed bipolar plates for PEM fuel cells  

DOE Patents [OSTI]

A liquid-cooled, bipolar plate separating adjacent cells of a PEM fuel cell comprises corrosion-resistant metal sheets brazed together so as to provide a passage between the sheets through which a dielectric coolant flows. The brazement comprises a metal which is substantially insoluble in the coolant. 6 figs.

Neutzler, J.K.

1998-07-07T23:59:59.000Z

90

Titanium carbide bipolar plate for electrochemical devices  

DOE Patents [OSTI]

A corrosion resistant, electrically conductive, non-porous bipolar plate is made from titanium carbide for use in an eletrochemical device. The process involves blending titanium carbide powder with a suitable binder material, and molding the mixture, at an elevated temperature and pressure.

LaConti, Anthony B. (Lynnfield, MA); Griffith, Arthur E. (Lynn, MA); Cropley, Cecelia C. (Acton, MA); Kosek, John A. (Danvers, MA)

2000-07-04T23:59:59.000Z

91

Fabrication procedures for HFIR control plates  

SciTech Connect (OSTI)

The HFIR control system uses Alclad cylindrically shaped components, which have regions containing 31 vol % Eu/sub 2/O/sub 3/ and 38 vol % Ta, respectively. Exacting control of the water passage between these components and adjacent reactor parts is mandatory, and precise dimensional control of the finished products is required. This report describes the procedures developed for manufacturing outer control plates and inner control cylinders. Results are cited which demonstrate that circular-shaped outer control plates can be produced with less than 0.025-in. variation from the specified 9.300-in. radius in any region of the plate. Other results show that, by the exercise of careful control, inner control, inner control plates can be welded into cylindrical geometry with diametrical variations held to less than +- 0.010 in. of the intended 17.846-in. average diam. The cylinders can then be explosively sized, while under compression, with diametric variations of less than 0.005 in. while controlling roundness variations to less than 0.030 in. from the specified 17.842-in. finished diam.

Bowden, G.A.; Hicks, G.R.; Knight, R.W.

1984-10-01T23:59:59.000Z

92

Metalization of lipid vesicles via electroless plating  

SciTech Connect (OSTI)

The encapsulation of metallic particles and metallic oxides within lipid vesicles has recently been of interest for applications such as catalysis, water splitting, and magnetic control of spin coupling. In this communication the authors introduce the concept and practice of the deposition of metal on vesicles by using electroless plating techniques. Coordination of low valent transition metals to organic functional groups on the surface of the bilayer membrane provides a means of binding metal atoms to vesicles. Chemical reduction produced zero valent atoms which serve as sites for further metal deposition by the chemical reduction techniques of electroless plating. Specifically, this procedure involved the binding of a small amount of tetrachloropalladate to the vesicle bilayer, reduction of the palladium(II) to palladium(0), followed by the deposition of much larger amounts of metal from an electroless plating solution. Electroless plating solutions were used for the deposition of palladium, nickel, cobalt, or copper metal onto the catalytic palladium centers. Since the metallic particles were associated with the vesicles, colloids were formed that were stable in water for much longer periods than the control metal particles formed in water alone. If the vesicles were composed in part of unsaturated lipids, with the olefinic groups on the hydrocarbon chains, the initial evidence suggests the transition metal was directed into the bilayer, rather than staying on the surface.

Ferrar, W.T.; O'Brien, D.F.; Warshawsky, A.; Voycheck, C.L.

1988-01-06T23:59:59.000Z

93

Ground Turkey and Potato Plate Ingredients  

E-Print Network [OSTI]

Ground Turkey and Potato Plate Ingredients: 1 onion 1/2 pound ground turkey 1 cup ketchup, low sodium 4 medium potatoes 4 ounces cheddar cheese, low-fat Directions 1. Cut the ends off of the onion. Meanwhile pierce potatoes in several places with fork. Place on baking dish in microwave oven. Microwave

Liskiewicz, Maciej

94

Titanium Carbide Bipolar Plate for Electrochemical Devices  

SciTech Connect (OSTI)

Titanium carbide comprises a corrosion resistant, electrically conductive, non-porous bipolar plate for use in an electrochemical device. The process involves blending titanium carbide powder with a suitable binder material, and molding the mixture, at an elevated temperature and pressure.

LaConti, Anthony B.; Griffith, Arthur E.; Cropley, Cecelia C.; Kosek, John A.

1998-05-08T23:59:59.000Z

95

Brazed bipolar plates for PEM fuel cells  

DOE Patents [OSTI]

A liquid-cooled, bipolar plate separating adjacent cells of a PEM fuel cell comprising corrosion-resistant metal sheets brazed together so as to provide a passage between the sheets through which a dielectric coolant flows. The brazement comprises a metal which is substantially insoluble in the coolant.

Neutzler, Jay Kevin (Rochester, NY)

1998-01-01T23:59:59.000Z

96

Spectral characterization of storage phosphor imaging plates  

SciTech Connect (OSTI)

This work presents attenuation and sensitivity measurements of radiographic imaging plates (IPs) with quasimonoenergetic X-rays in the 8–60 kiloelectronvolt range. The measurements are used to validate theoretical predictions. A short overview of the theoretical model is given. The model can be used to describe the sensitivity of different detector types to a wide range of X-ray energies.

Deresch, A.; Jechow, M.; Gollwitzer, C. [Federal Institute for Materials Research and Testing Unter den Eichen 87, 12205 Berlin (Germany)

2014-02-18T23:59:59.000Z

97

Bending Energy of Rods and Plates  

E-Print Network [OSTI]

descriptors DUH HFFHQWULFLW\\ VSKHULFLW\\ 3$ SHULPHWHU VTXDUHG GLYLGHG E\\ WLPHV area) and bending energy185 Chapter 9 Bending Energy of Rods and Plates Integrated curvature and bending energy of a closed curvature/energy values over a chain-code description of the contour (as in binary length estimators). We

van Vliet, Lucas J.

98

Fuel cell plates with improved arrangement of process channels for enhanced pressure drop across the plates  

DOE Patents [OSTI]

A plate for a fuel cell has an arrangement of ribs defining an improved configuration of process gas channels and slots on a surface of the plate which provide a modified serpentine gas flow pattern across the plate surface. The channels are generally linear and arranged parallel to one another while the spaced slots allow cross channel flow of process gas in a staggered fashion which creates a plurality of generally mini-serpentine flow paths extending transverse to the longitudinal gas flow along the channels. Adjacent pairs of the channels are interconnected to one another in flow communication. Also, a bipolar plate has the aforementioned process gas channel configuration on one surface and another configuration on the opposite surface. In the other configuration, there are not slots and the gas flow channels have a generally serpentine configuration.

Spurrier, Francis R. (Whitehall Boro, PA); Pierce, Bill L. (Whitehall Boro, PA); Wright, Maynard K. (Bethel Park, PA)

1986-01-01T23:59:59.000Z

99

A slotted orifice plate used as a flow measurement device  

E-Print Network [OSTI]

The standard orifice plate is used extensively by the natural gas industry for the metering of fuel. Because of the costs associated with errors in flow measurement inherent with the use of a standard orifice plate, any improvements upon...

Macek, Michael Lee

2012-06-07T23:59:59.000Z

100

A fuel cell stack with Heterogeneous composite bipolar plate.  

E-Print Network [OSTI]

??The design of the bipolar plates decides most of the cost of Fuel Cell.Bipolar plate has a great influence in Fuel Cell performance.We choose carbon… (more)

Lai, Cheng-chih

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Tensor rank : some lower and upper bounds  

E-Print Network [OSTI]

The results of Strassen [25] and Raz [19] show that good enough tensor rank lower bounds have implications for algebraic circuit/formula lower bounds. We explore tensor rank lower and upper bounds, focusing on explicit ...

Forbes, Michael Andrew

2011-01-01T23:59:59.000Z

102

Preliminary Measurements From A New Flat Plate Facility For Aerodynamic Research  

SciTech Connect (OSTI)

This paper details the design and preliminary measurements used in the characterisation of a new flat plate research facility. The facility is designed specifically to aid in the understanding of entropy generation throughout the boundary layer with special attention given to non-equilibrium flows. Hot-wire measurements were obtained downstream of two turbulence generating grids. The turbulence intensity, integral and dissipation length scale ranges measured are 1.6%-7%, 5mm-17mm and 0.7mm-7mm, respectively. These values compared well to existing correlations. The flow downstream of both grids was found to be homogenous and isotropic. Flow visualisation is employed to determine aerodynamic parameters such as flow 2-dimensionality and the effect of the flap angle on preventing separation at the leading edge. The flow was found to be 2-dimensional over all measurement planes. The non-dimensional pressure distribution of a modern turbine blade suction surface is simulated on the flat plate through the use of a variable upper wall. The Reynolds number range based on wetted plate length and inlet velocity is 70,000-4,000,000.

D. M. McEligot; D. W. Nigg; E. J. Walsh; D. Hernon; M.R.D. Davies

2005-03-01T23:59:59.000Z

103

Selective Electroless Nickel Plating of Particle Arrays on Polyelectrolyte Multilayers  

E-Print Network [OSTI]

Selective Electroless Nickel Plating of Particle Arrays on Polyelectrolyte Multilayers Ilsoon Lee Received June 30, 2003. Revised Manuscript Received September 25, 2003 Selective electroless nickel plating, it was demonstrated that selective electroless nickel plating on complex 3-D microstructures with submicron resolution

Lee, Ilsoon

104

Wave turbulence served up on a plate  

E-Print Network [OSTI]

Wave turbulence in a thin elastic plate is experimentally investigated. By using a Fourier transform profilometry technique, the deformation field of the plate surface is measured simultaneously in time and space. This enables us to compute the wavevector-frequency Fourier ($\\mathbf k, \\omega$) spectrum of the full space-time deformation velocity. In the 3D ($\\mathbf k, \\omega$) space, we show that the energy of the motion is concentrated on a 2D surface that represents a nonlinear dispersion relation. This nonlinear dispersion relation is close to the linear dispersion relation. This validates the usual wavenumber-frequency change of variables used in many experimental studies of wave turbulence. The deviation from the linear dispersion, which increases with the input power of the forcing, is attributed to weak non linear effects. Our technique opens the way for many new extensive quantitative comparisons between theory and experiments of wave turbulence.

Pablo Cobelli; Philippe Petitjeans; Agnes Maurel; Vincent Pagneux; Nicolas Mordant

2009-10-28T23:59:59.000Z

105

Your Mission: To become familiar with the major plate boundaries through exploration of plate tectonic features using Google Earth.  

E-Print Network [OSTI]

boundaries through exploration of plate tectonic features using Google Earth. Your Supplies: (1) A computer with internet access and the Google Earth program of Earth's tectonic plates using Google Earth. To do this, login

Smith-Konter, Bridget

106

Vibrations of circular steel plates with damping  

E-Print Network [OSTI]

distributed. Usually, the prime objection to vibrations produced by machines is their effect on humans. These are high frequency vibrations that produce troublesome noise. Low frequency vibrations are often trans- mitted and these may damage nearby... materials used with fans, motors, engines, presses, turbines and similar machines. Byars (1)* studied vibrations of a circular plate on three supports for node patterns, amplitudes and frequencies. Ballentine (2) investigated the vibrations of circular...

Sheth, Prafulchandra Naginlal

1967-01-01T23:59:59.000Z

107

Syneresis and delayed detachment in agar plates  

E-Print Network [OSTI]

Biogels made of crosslinked polymers such as proteins or polysaccharides behave as porous soft solids and store large amount of solvent. These gels undergo spontaneous aging, called syneresis that consists in the shrinkage of the gel matrix and the progressive expulsion of the solvent, which eventually leads to the gel detachment from its container. Here we report on the syneresis phenomena in agar plates that consist in Petri dishes filled with a gel mainly composed of agar. Direct observations and speckle pattern correlation analyses allow us to rationalize the delayed detachment of the gel from the sidewall of the Petri dish. The detachment time $t^*$ is mainly controlled by the gel minimum thickness $e_{min}$ along the periphery of the plate: $t^*$ increases as a robust function of $e_{min}$ that neither depends on the age of the gel nor on any previous mass loss. Time-resolved correlation spectroscopy reveals that the speckle decorrelation rate increases a few hours before $t^*$ and that the gel detachment can be anticipated. This work provides quantitative observables to predict the shelf life of agar plates and highlights the key role of the competition between the syneresis and the gel adhesion to the wall in the detachment process.

Thibaut Divoux; Bosi Mao; Patrick Snabre

2014-10-30T23:59:59.000Z

108

Particle Transport in Parallel-Plate Reactors  

SciTech Connect (OSTI)

A major cause of semiconductor yield degradation is contaminant particles that deposit on wafers while they reside in processing tools during integrated circuit manufacturing. This report presents numerical models for assessing particle transport and deposition in a parallel-plate geometry characteristic of a wide range of single-wafer processing tools: uniform downward flow exiting a perforated-plate showerhead separated by a gap from a circular wafer resting on a parallel susceptor. Particles are assumed to originate either upstream of the showerhead or from a specified position between the plates. The physical mechanisms controlling particle deposition and transport (inertia, diffusion, fluid drag, and external forces) are reviewed, with an emphasis on conditions encountered in semiconductor process tools (i.e., sub-atmospheric pressures and submicron particles). Isothermal flow is assumed, although small temperature differences are allowed to drive particle thermophoresis. Numerical solutions of the flow field are presented which agree with an analytic, creeping-flow expression for Re < 4. Deposition is quantified by use of a particle collection efficiency, which is defined as the fraction of particles in the reactor that deposit on the wafer. Analytic expressions for collection efficiency are presented for the limiting case where external forces control deposition (i.e., neglecting particle diffusion and inertia). Deposition from simultaneous particle diffusion and external forces is analyzed by an Eulerian formulation; for creeping flow and particles released from a planar trap, the analysis yields an analytic, integral expression for particle deposition based on process and particle properties. Deposition from simultaneous particle inertia and external forces is analyzed by a Lagrangian formulation, which can describe inertia-enhanced deposition resulting from particle acceleration in the showerhead. An approximate analytic expression is derived for particle velocity at the showerhead exit as a function of showerhead geometry, flow rate, and gas and particle properties. The particle showerhead-exit velocity is next used as an initial condition for particle transport between the plates to determine whether the particle deposits on the wafer, as a function of shower-head-exit particle velocity, the plate separation, flow rate, and gas and particle properties. Based on the numerical analysis, recommendations of best practices are presented that should help tool operators and designers reduce particle deposition in real tools. These guidelines are not intended to replace detailed calculations, but to provide the user with a general feel for inherently-clean practices.

Rader, D.J.; Geller, A.S.

1999-08-01T23:59:59.000Z

109

Spatial homogenization for plate-type critical assemblies. [LMFBR  

SciTech Connect (OSTI)

Standard calculational models of plate-type LMFBR critical assemblies do not explicitly represent individual plates. Instead, detailed plate-by-plate calculations are performed only for each representative cell type, and homogenized cross sections are defined by flux-volume weighting of individual plate cross sections. Subsequent reactor calculations are performed by modeling each cell type with homogenized cross sections. The homogenized cross sections are sensitive to the manner in which the cell leakage is modeled. The intent of this paper is to present a method of representing the cell leakage which results in more accurate homogenized cross sections than the methods presently in use.

Rempe, K.R.; Smith, K.S.

1983-01-01T23:59:59.000Z

110

ON COMPUTING UPPER LIMITS TO SOURCE INTENSITIES  

SciTech Connect (OSTI)

A common problem in astrophysics is determining how bright a source could be and still not be detected in an observation. Despite the simplicity with which the problem can be stated, the solution involves complicated statistical issues that require careful analysis. In contrast to the more familiar confidence bound, this concept has never been formally analyzed, leading to a great variety of often ad hoc solutions. Here we formulate and describe the problem in a self-consistent manner. Detection significance is usually defined by the acceptable proportion of false positives (background fluctuations that are claimed as detections, or Type I error), and we invoke the complementary concept of false negatives (real sources that go undetected, or Type II error), based on the statistical power of a test, to compute an upper limit to the detectable source intensity. To determine the minimum intensity that a source must have for it to be detected, we first define a detection threshold and then compute the probabilities of detecting sources of various intensities at the given threshold. The intensity that corresponds to the specified Type II error probability defines that minimum intensity and is identified as the upper limit. Thus, an upper limit is a characteristic of the detection procedure rather than the strength of any particular source. It should not be confused with confidence intervals or other estimates of source intensity. This is particularly important given the large number of catalogs that are being generated from increasingly sensitive surveys. We discuss, with examples, the differences between these upper limits and confidence bounds. Both measures are useful quantities that should be reported in order to extract the most science from catalogs, though they answer different statistical questions: an upper bound describes an inference range on the source intensity, while an upper limit calibrates the detection process. We provide a recipe for computing upper limits that applies to all detection algorithms.

Kashyap, Vinay L.; Siemiginowska, Aneta [Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 (United States); Van Dyk, David A.; Xu Jin [Department of Statistics, University of California, Irvine, CA 92697-1250 (United States); Connors, Alanna [Eureka Scientific, 2452 Delmer Street, Suite 100, Oakland, CA 94602-3017 (United States); Freeman, Peter E. [Department of Statistics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213 (United States); Zezas, Andreas, E-mail: vkashyap@cfa.harvard.ed, E-mail: asiemiginowska@cfa.harvard.ed, E-mail: dvd@ics.uci.ed, E-mail: jinx@ics.uci.ed, E-mail: aconnors@eurekabayes.co, E-mail: pfreeman@cmu.ed, E-mail: azezas@cfa.harvard.ed [Physics Department, University of Crete, P.O. Box 2208, GR-710 03, Heraklion, Crete (Greece)

2010-08-10T23:59:59.000Z

111

Casimir interaction energies for magneto-electric ?-function plates  

E-Print Network [OSTI]

We present boundary conditions for the electromagnetic fields on a \\delta-function plate, having both electric and magnetic properties, sandwiched between two magneto-electric semi-infinite half spaces. The optical properties for an isolated \\delta-function plate are shown to be independent of the longitudinal material properties of the plate. The Casimir-Polder energy between an isotropically polarizable atom and a magneto-electric \\delta-function plate is attractive for a purely electric \\delta-function plate, repulsive for a purely magnetic \\delta-function plate, and vanishes for the simultaneous perfect conductor limit of both electric and magnetic properties of the \\delta-function plate. The interaction energy between two identical \\delta-function plates is always attractive. It can be attractive or repulsive when the plates have electric and magnetic properties interchanged and reproduces Boyer's result for the interaction energy between perfectly conducting electric and magnetic plates. The change in the Casimir-Polder energy in the presence of a \\delta-function plate on a magneto-electric substrate is substantial when the substrate is a weak dielectric.

Kimball A. Milton; Prachi Parashar; Martin Schaden; K. V. Shajesh

2013-02-01T23:59:59.000Z

112

A novel plating process for microencapsulating metal hydrides  

SciTech Connect (OSTI)

One approach to increasing the lifetime of the metal hydride electrode has been the use of conventional electroless plating to produce a coating of copper or nickel on the surface of the metal hydride powders. In this paper, a novel method for microencapsulating the active electrode powders is presented. This new plating technique takes advantage of the reducing power of hydrogen already stored inside the metal hydride to plate a variety of metals onto metal hydride materials. This method greatly simplifies electroless plating for these powders, eliminating the need for stabilizers and additives typically required for conventional electroless plating solutions. Metals that can be electrolessly plated with stored hydrogen have been identified based on thermodynamic considerations. Experimentally, micrometers thick coatings of copper, silver, and nickel have been plated on several metal hydrides.

Law, H.H.; Vyas, B.; Zahurak, S.M.; Kammlott, G.W. [AT and T Bell Labs., Murray Hill, NJ (United States)

1996-08-01T23:59:59.000Z

113

Materials selection for the US INTOR divertor collector plate  

SciTech Connect (OSTI)

The divertor collector plate in the INTOR reactor will be subjected to high heat, particle, and neutron fluxes, making it the most severely damaged torus component. The collector plate is composed of a protection plate, which is directly exposed to the particle flux, and a heat sink which provides support for the protection plate and carries the water coolant. The high-Z refractory metals have been considered for use as the protection plate material, and austenitic stainless steels and copper alloys have been considered as the heat sink material. Tungsten and Type 316 stainless steels have been selected for the protection plate and heat sink, respectively. The protection plate has a sputtering lifetime of 1.75 y at a 50% duty factor, while the heat sink is expected to last the lifetime of the reactor.

Mattas, R.F.; Misra, B.; Smith, D.L.; Morgan, G.D.; Delaney, M.; Gold, R.

1981-01-01T23:59:59.000Z

114

Upper Snake Provincial Assessment May 2004 APPENDIX 4-1--UPPER SNAKE PROVINCE PROJECT INVENTORY  

E-Print Network [OSTI]

Upper Snake Provincial Assessment May 2004 1 APPENDIX 4-1--UPPER SNAKE PROVINCE PROJECT INVENTORY The purpose of the project inventory is to provide a generalized picture of the types of fish and wildlife team participants through the project inventory website or through direct submission. Additional

115

Aspects of electroless nickel plating on molybdenum  

SciTech Connect (OSTI)

A process for depositing an adherent coating of an electroless nickel-phosphorus alloy on molybdenum was developed. The required pretreatment processes included an anodic etch in a chromic acid-nitric acid solution, an anodic etch in a phosphonic acid solution, and an oxide stripping step in a chromic acid-nitric acid solution. Initiation of the electroless nickel plating was accomplished through a series of strikes in the nickel bath. Scale up from laboratory parts to large components involved optimization of parameters such as pretreat time, current density, anode to cathode ratio and strike time.

Mikkola, R.D.; Daugherty, C.E.; Harris, G.E.; Neff, W.A.; Owens, W.W.

1984-07-01T23:59:59.000Z

116

Sampling Plan for Assaying Plates Containing Depleted or Normal Uranium  

SciTech Connect (OSTI)

This paper describes the rationale behind the proposed method for selecting a 'representative' sample of uranium metal plates, portions of which will be destructively assayed at the Y-12 Security Complex. The total inventory of plates is segregated into two populations, one for Material Type 10 (depleted uranium (DU)) and one for Material Type 81 (normal [or natural] uranium (NU)). The plates within each population are further stratified by common dimensions. A spreadsheet gives the collective mass of uranium element (and isotope for DU) and the piece count of all plates within each stratum. These data are summarized in Table 1. All plates are 100% uranium metal, and all but approximately 60% of the NU plates have Kel-F{reg_sign} coating. The book inventory gives an overall U-235 isotopic percentage of 0.22% for the DU plates, ranging from 0.19% to 0.22%. The U-235 ratio of the NU plates is assumed to be 0.71%. As shown in Table 1, the vast majority of the plates are comprised of depleted uranium, so most of the plates will be sampled from the DU population.

Ivan R. Thomas

2011-11-01T23:59:59.000Z

117

Elastocapillary coalescence of plates and pillars  

E-Print Network [OSTI]

When a fluid-immersed array of lamellae or filaments that is attached to a substrate is dried, evaporation leads to the formation of menisci on the tips of the plates or pillars that bring them together. Similarly, when hair dries it clumps together due to capillary forces induced by the liquid menisci between the flexible hairs. Building on prior experimental observations, we use a combination of theory and computation to understand the nature of this instability and its evolution in both the two-dimensional and three-dimensional setting of the problem. For the case of lamellae, we explicitly derive the interaction torques based on the relevant physical parameters. A Bloch-wave analysis for our periodic mechanical system captures the critical volume of the liquid and the 2-plate-collapse eigenmode at the onset of instability. We study the evolution of clusters and their arrest using numerical simulations to explain the hierarchical cluster formation and characterize the sensitive dependence of the final structures on the initial perturbations. We then generalize our analysis to treat the problem of pillar collapse in 3D, where the fluid domain is completely connected and the interface is a surface with the uniform mean curvature. Our theory and simulations capture the salient features of both previous experimental observations and our own in terms of the key parameters that can be used to control the kinetics of the process.

Zhiyan Wei; Tobias Schneider; Jungchul Kim; Ho-Young Kim; Joanna Aizenberg; L. Mahadevan

2014-08-04T23:59:59.000Z

118

C6 plate puncture testing report.  

SciTech Connect (OSTI)

There are numerous scenarios where critical systems could be subject to penetration by projectiles or fixed objects (e.g., collision, natural disaster, act of terrorism, etc.). It is desired to use computational models to examine these scenarios and make risk-informed decisions; however, modeling of material failure is an active area of research, and new models must be validated with experimental data. The purpose of this report is to document the experimental work performed from FY07 through FY08 on the Campaign Six Plate Puncture project. The goal of this project was to acquire experimental data on the puncture and penetration of metal plates for use in model validation. Of particular interest is the PLH failure model also known as the multilinear line segment model. A significant amount of data that will be useful for the verification and validation of computational models of ductile failure were collected during this project were collected and documented herein; however, much more work remains to be performed, collecting additional experimental data that will further the task of model verification.

Vangoethem, Douglas J.; Cordova, Theresa Elena; Reu, Phillip L.

2013-04-01T23:59:59.000Z

119

POSTGRADUATE Upper Level, Otto Beit Building  

E-Print Network [OSTI]

FUNDING YOUR POSTGRADUATE STUDIES AT UCT Upper Level, Otto Beit Building University Avenue North, the Postgraduate Funding Office and Postgraduate Centre were established at the University of Cape Town to provide apply for funding from both the University and from as many other sources of support as possible

Jarrett, Thomas H.

120

Draft Management Plan Upper Snake Province  

E-Print Network [OSTI]

.......................................................................................4-5 Consistency with Idaho's Water Quality Management Plan...........................4-5 303(dDraft Management Plan Upper Snake Province Submitted To The Northwest Power and Conservation Quality Anti-Degradation Policy (39-3603) ............................................4-8 ESA and CWA

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Catalytic bipolar interconnection plate for use in a fuel cell  

DOE Patents [OSTI]

A bipolar interconnection plate for use between adjacent fuel cell units in a stacked fuel cell assembly. Each plate is manufactured from an intermetallic composition, examples of which include NiAl or Ni.sub.3 Al which can catalyze steam reforming of hydrocarbons. Distributed within the intermetallic structure of the plate is a ceramic filler composition. The plate includes a first side with gas flow channels therein and a second side with fuel flow channels therein. A protective coating is applied to the first side, with exemplary coatings including strontium-doped or calcium-doped lanthanum chromite. To produce the plate, Ni and Al powders are combined with the filler composition, compressed at a pressure of about 10,000-30,000 psi, and heated to about 600.degree.-1000.degree. C. The coating is then applied to the first side of the completed plate using liquid injection plasma deposition or other deposition techniques.

Lessing, Paul A. (Idaho Falls, ID)

1996-01-01T23:59:59.000Z

122

Catalytic bipolar interconnection plate for use in a fuel cell  

DOE Patents [OSTI]

A bipolar interconnection plate is described for use between adjacent fuel cell units in a stacked fuel cell assembly. Each plate is manufactured from an intermetallic composition, examples of which include NiAl or Ni{sub 3}Al which can catalyze steam reforming of hydrocarbons. Distributed within the intermetallic structure of the plate is a ceramic filler composition. The plate includes a first side with gas flow channels therein and a second side with fuel flow channels therein. A protective coating is applied to the first side, with exemplary coatings including strontium-doped or calcium-doped lanthanum chromite. To produce the plate, Ni and Al powders are combined with the filler composition, compressed at a pressure of about 10,000--30,000 psi, and heated to about 600--1000 C. The coating is then applied to the first side of the completed plate using liquid injection plasma deposition or other deposition techniques. 6 figs.

Lessing, P.A.

1996-03-05T23:59:59.000Z

123

Behavior of plate trunnions subjected to shear loads  

SciTech Connect (OSTI)

The use of fabricated trunnions in heavy lift installation of offshore and marine structures is becoming widespread. This paper presents the results of a parametric study, with systematic variation of relevant geometric parameters, on the elasto-plastic responses of plate trunnions subjected to shear loads from the sling eyes. Two distinctive failure modes, associated with main plate dominated and shear plate/trunnion pipe dominated responses are identified and the corresponding results summarized. A proportional limit load, P{sub yl}, is defined for each specimen based on its load-displacement response. It is observed that a plate trunnion possesses significant reserve strength beyond its limit load and that current industry practice, which considers the shear plate only to transfer the total sling load into the main plate, is overly conservative.

Choo, Y.S.; Padmanaban, K.; Shanmugam, N.E.; Liew, J.Y.R. [National Univ. of Singapore (Singapore). Faculty of Engineering

1995-12-31T23:59:59.000Z

124

Tests of a Novel Design of Resistive Plate Chambers  

E-Print Network [OSTI]

A novel design of Resistive Plate Chambers (RPCs), using only a single resistive plate, is being proposed. Based on this design, two large size prototype chambers were constructed and were tested with cosmic rays and in particle beams. The tests confirmed the viability of this new approach. In addition to showing an improved single-particle response compared to the traditional 2-plate design, the novel chambers also prove to be suitable for calorimetric applications.

Bilki, B; Freund, B; Neubüser, C; Onel, Y; Repond, J; Schlereth, J; Xia, L

2015-01-01T23:59:59.000Z

125

Investigation of metallic bipolar plates for PEM fuel cells.  

E-Print Network [OSTI]

?? High cost and a short lifetime are the two main reasons why the PEM fuel cell is yet to be commercialized. The bipolar plate… (more)

Lædre, Sigrid

2011-01-01T23:59:59.000Z

126

The StarScan plate measuring machine: overview and calibrations  

E-Print Network [OSTI]

The StarScan machine at the U.S. Naval Observatory (USNO) completed measuring photographic astrograph plates to allow determination of proper motions for the USNO CCD Astrograph Catalog (UCAC) program. All applicable 1940 AGK2 plates, about 2200 Hamburg Zone Astrograph plates, 900 Black Birch (USNO Twin Astrograph) plates, and 300 Lick Astrograph plates have been measured. StarScan comprises of a CCD camera, telecentric lens, air-bearing granite table, stepper motor screws, and Heidenhain scales to operate in a step-stare mode. The repeatability of StarScan measures is about 0.2 micrometer. The CCD mapping as well as the global table coordinate system has been calibrated using a special dot calibration plate and the overall accuracy of StarScan x,y data is derived to be 0.5 micrometer. Application to real photographic plate data shows that position information of at least 0.65 micrometer accuracy can be extracted from course grain 103a-type emulsion astrometric plates. Transformations between "direct" and "reverse" measures of fine grain emulsion plate measures are obtained on the 0.3 micrometer level per well exposed stellar image and coordinate, which is at the limit of the StarScan machine.

Norbert Zacharias; Lars Winter; Ellis Holdenried; Jean-Pierre de Cuyper; Ted Rafferty; Gary Wycoff

2008-06-02T23:59:59.000Z

127

A Pilot Search for Evidence of Extrasolar Earth-analog Plate Tectonics  

E-Print Network [OSTI]

Relative to calcium, both strontium and barium are markedly enriched in Earth's continental crust compared to the basaltic crusts of other differentiated rocky bodies within the solar system. Here, we both re-examine available archived Keck spectra to place upper bounds on n(Ba)/n(Ca) and revisit published results for n(Sr)/n(Ca) in two white dwarfs that have accreted rocky planetesimals. We find that at most only a small fraction of the pollution is from crustal material that has experienced the distinctive elemental enhancements induced by Earth-analog plate tectonics. In view of the intense theoretical interest in the physical structure of extrasolar rocky planets, this search should be extended to additional targets.

Jura, M; Xu, S; Young, E D

2014-01-01T23:59:59.000Z

128

Perspective on plating for precision finishing  

SciTech Connect (OSTI)

This paper is intended as an overview on platings for precision finishing operations. After a brief review of the two processes (polishing and precision machining) by which a coating on a part can be converted to a precision surface, the coatings which work successfully in these applications will be discussed. Then adhesion and stress aspects of deposits will be covered. Electroless nickel, which is a particularly attractive coating for precision finishing applications, will be discussed in some detail, from its early years as the Kanigen'' process to the present. Since microstructural changes in deposits are important for precision parts, this aspect will be covered for electroless nickel, copper and silver deposits. Lastly, some words will be directed at potential future electrodeposited coatings including nickel-phosphorus alloys, and various silver alloys. 41 refs., 16 figs., 1 tab.

Dini, J.W.

1991-04-01T23:59:59.000Z

129

Geothermal Casimir phenomena for the sphere-plate and cylinder-plate configurations  

E-Print Network [OSTI]

We investigate the nontrivial interplay between geometry and temperature in the Casimir effect for the sphere-plate and cylinder-plate configurations. At low temperature, the thermal contribution to the Casimir force is dominated by this interplay, implying that standard approximation techniques such as the PFA are inapplicable even in the limit of small surface separation. Thermal fluctuations on scales of the thermal wavelength lead to a delocalization of the thermal force density at low temperatures. As a consequence, the temperature dependence strongly differs from naive expectations. Most prominently, thermal forces can develop non-monotonic behavior below a critical temperature. We perform a comprehensive study of such geothermal phenomena in these Casimir geometries, using analytical and numerical worldline techniques for Dirichlet scalar fluctuations.

Alexej Weber; Holger Gies

2010-03-17T23:59:59.000Z

130

Geothermal Casimir phenomena for the sphere-plate and cylinder-plate configurations  

E-Print Network [OSTI]

We investigate the nontrivial interplay between geometry and temperature in the Casimir effect for the sphere-plate and cylinder-plate configurations. At low temperature, the thermal contribution to the Casimir force is dominated by this interplay, implying that standard approximation techniques such as the PFA are inapplicable even in the limit of small surface separation. Thermal fluctuations on scales of the thermal wavelength lead to a delocalization of the thermal force density at low temperatures. As a consequence, the temperature dependence strongly differs from naive expectations. Most prominently, thermal forces can develop non-monotonic behavior below a critical temperature. We perform a comprehensive study of such geothermal phenomena in these Casimir geometries, using analytical and numerical worldline techniques for Dirichlet scalar fluctuations.

Weber, Alexej

2010-01-01T23:59:59.000Z

131

Sub-Seafloor Carbon Dioxide Storage Potential on the Juan de Fuca Plate, Western North America  

SciTech Connect (OSTI)

The Juan de Fuca plate, off the western coast of North America, has been suggested as a site for geological sequestration of waste carbon dioxide because of its many attractive characteristics (high permeability, large storage capacity, reactive rock types). Here we model CO2 injection into fractured basalts comprising the upper several hundred meters of the sub-seafloor basalt reservoir, overlain with low-permeability sediments and a large saline water column, to examine the feasibility of this reservoir for CO2 storage. Our simulations indicate that the sub-seafloor basalts of the Juan de Fuca plate may be an excellent CO2 storage candidate, as multiple trapping mechanisms (hydrodynamic, density inversions, and mineralization) act to keep the CO2 isolated from terrestrial environments. Questions remain about the lateral extent and connectivity of the high permeability basalts; however, the lack of wells or boreholes and thick sediment cover maximize storage potential while minimizing potential leakage pathways. Although promising, more study is needed to determine the economic viability of this option.

Jerry Fairley; Robert Podgorney

2012-11-01T23:59:59.000Z

132

Vacuum fusion bonded glass plates having microstructures thereon  

DOE Patents [OSTI]

An improved apparatus and method for vacuum fusion bonding of large, patterned glass plates. One or both glass plates are patterned with etched features such as microstructure capillaries and a vacuum pumpout moat, with one plate having at least one hole therethrough for communication with a vacuum pumpout fixture. High accuracy alignment of the plates is accomplished by a temporary clamping fixture until the start of the fusion bonding heat cycle. A complete, void-free fusion bond of seamless, full-strength quality is obtained through the plates; because the glass is heated well into its softening point and because of a large, distributed force that is developed that presses the two plates together from the difference in pressure between the furnace ambient (high pressure) and the channeling and microstructures in the plates (low pressure) due to the vacuum drawn. The apparatus and method may be used to fabricate microcapillary arrays for chemical electrophoresis; for example, any apparatus using a network of microfluidic channels embedded between plates of glass or similar moderate melting point substrates with a gradual softening point curve, or for assembly of glass-based substrates onto larger substrates, such as in flat panel display systems.

Swierkowski, Steve P. (Livermore, CA); Davidson, James C. (Livermore, CA); Balch, Joseph W. (Livermore, CA)

2001-01-01T23:59:59.000Z

133

Heterogeneous cavitation in liquid helium 4 near a glass plate  

E-Print Network [OSTI]

Heterogeneous cavitation in liquid helium 4 near a glass plate X. Chavanne, S. Balibar and F wave to study cavitation, i.e. the nucleation of bubbles, in liquid helium 4 near a clean glass plate and threshold pressures in the range 0 to -3 bar, significantly less negative than for homogeneous cavitation

Caupin, Frédéric

134

Impact of graphene coating on the atom-plate interaction  

E-Print Network [OSTI]

Using the recently proposed quantum electrodynamical formalism, we calculate the Casimir-Polder free energies and forces between the ground state atoms of Rb, Na, Cs and He${}^{\\ast}$ and the plates made of Au, Si, sapphire and fused silica coated with a graphene sheet. It is shown that the graphene coating has no effect on the Casimir-Polder interaction for metallic plates, but influences significantly for plates made of dielectric materials. The influence of graphene coating increases with decreasing static dielectric permittivity of the plate material and the characteristic frequency of an atomic dynamic polarizability. Simple analytic expressions for the classical limit of the Casimir-Polder free energy and force between an atom and a graphene-coated plate are obtained. From the comparison with the results of numerical computations, the application region of these expressions is determined.

G. L. Klimchitskaya; V. M. Mostepanenko

2014-06-23T23:59:59.000Z

135

An Integrated Geophysical Analysis Of The Upper Crust Of The...  

Open Energy Info (EERE)

Of The Upper Crust Of The Southern Kenya Rift Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: An Integrated Geophysical Analysis Of The Upper...

136

Seismic tomography constraints on reconstructing the Philippine Sea Plate and its margin  

E-Print Network [OSTI]

The Philippine Sea Plate has been surrounded by subduction zones throughout Cenozoic time due to the convergence of the Eurasian, Pacific and Indian-Australian plates. Existing Philippine Sea Plate reconstructions have been made based primarily...

Handayani, Lina

2005-02-17T23:59:59.000Z

137

Effect of polyurea on dynamic response and fracture resistance of steel plates under impulsive loads  

E-Print Network [OSTI]

on the dynamic response of steel plates, 2006 SEM AnnualPenetration protection of steel plates with polyurea layer,the post-failure motion of steel plates subjected to blast

Amini, Mahmoud Reza

2007-01-01T23:59:59.000Z

138

Seafloor geodetic measurements and modeling of Nazca-South America plate convergence  

E-Print Network [OSTI]

3. Nazca-South America plate convergence . II GPS-acousticIII.2: Nazca-South America plate convergenceDecelerat- ing Naza-South America and Nazca-Pac?c plate

Gagnon, Katie L.

2007-01-01T23:59:59.000Z

139

Perforated plates for cryogenic regenerators and method of fabrication  

DOE Patents [OSTI]

Perforated plates (10) having very small holes (14) with a uniform diameter throughout the plate thickness are prepared by a "wire drawing" process in which a billet of sacrificial metal is disposed in an extrusion can of the plate metal, and the can is extruded and restacked repeatedly, converting the billet to a wire of the desired hole diameter. At final size, the rod is then sliced into wafers, and the wires are removed by selective etching. This process is useful for plate metals of interest for high performance regenerator applications, in particular, copper, niobium, molybdenum, erbium, and other rare earth metals. Er.sub.3 Ni, which has uniquely favorable thermophysical properties for such applications, may be incorporated in regions of the plates by providing extrusion cans (20) containing erbium and nickel metals in a stacked array (53) with extrusion cans of the plate metal, which may be copper. The array is heated to convert the erbium and nickel metals to Er.sub.3 Ni. Perforated plates having two sizes of perforations (38, 42), one of which is small enough for storage of helium, are also disclosed.

Hendricks, John B. (Huntsville, AL)

1994-01-01T23:59:59.000Z

140

Regenerate metal-plating baths to cut waste and save  

SciTech Connect (OSTI)

During electrode-based metal plating of equipment components, the formation of an electrical field causes metal deposits to be thicker at edges and seams, and thinner on flat surfaces. And, electrode-based methods consume large amounts of energy. Electroless-nickel (EN) -- or autocatalytic -- plating systems were pioneered in the 1940s to solve these problems. EN plating produces a more uniform coating, irrespective of the complexity of the part, and it consumes less electricity, since to electric current is required during plating. Plating in an EN system results from a chemical reaction between nickel in the bath and the substrate of the equipment component. The downside of electroless plating, however, is the limited life of the nickel bath, and the large volume of metal waste produced by bath disposal. Ionsep Corp. (Wilmington, Del.) has developed an electrodialytic system that continuously reforms the EN plating baths, to give them longer life. Its patented system has been successfully laboratory tested in a 1-ft{sup 2} cell, and the firm recently won a $250,000 grant from the US Dept. of Energy (Washington, D.C.) and Environmental Protection Agency (Washington, D.C.), to design and engineer a commercial-scale version of the system.

NONE

1995-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Large-Area Zone Plate Fabrication with Optical Lithography  

SciTech Connect (OSTI)

Zone plates as condenser optics for x-ray microscopes offer simple optical designs for both illumination and spectral resolution when used as a linear monochromator. However, due to the long write times for electron beam lithography, both the availability and the size of zone plates for condensers have been limited. Since the resolution provided by the linear monochromator scales almost linearly with the diameter of the zone plate, the full potential for zone plate monochromators as illumination systems for x-ray microscopes has not been achieved. For example, the 10-mm-diameter zone plate has demonstrated a spectral resolution of E/{Delta}E = 700[1], but with a 26-mm-diameter zone plate, the calculated spectral resolution is higher than E/{Delta}E = 3000. These large-area zone plates are possible to fabricate with the leading edge semiconductor lithography tools such as those available at the College of Nanoscale Science and Engineering at the University at Albany. One of the lithography tools available is the ASML TWINSCAN XT: 1950i with 37-nm resolution [2]. A single 300-mm wafer can contain more than 60 fields, each with a large area condenser, and the throughput of the tool can be more than one wafer every minute.

Denbeaux, G. [College of Nanoscale Science and Engineering, University at Albany, 255 Fuller Road, Albany, NY 12203 (United States)

2011-09-09T23:59:59.000Z

142

Perforated plates for cryogenic regenerators and method of fabrication  

DOE Patents [OSTI]

Perforated plates having very small holes with a uniform diameter throughout the plate thickness are prepared by a [open quotes]wire drawing[close quotes] process in which a billet of sacrificial metal is disposed in an extrusion can of the plate metal, and the can is extruded and restacked repeatedly, converting the billet to a wire of the desired hole diameter. At final size, the rod is then sliced into wafers, and the wires are removed by selective etching. This process is useful for plate metals of interest for high performance regenerator applications, in particular, copper, niobium, molybdenum, erbium, and other rare earth metals. Er[sub 3]Ni, which has uniquely favorable thermophysical properties for such applications, may be incorporated in regions of the plates by providing extrusion cans containing erbium and nickel metals in a stacked array with extrusion cans of the plate metal, which may be copper. The array is heated to convert the erbium and nickel metals to Er[sub 3]Ni. Perforated plates having two sizes of perforations, one of which is small enough for storage of helium, are also disclosed. 10 figures.

Hendricks, J.B.

1994-03-29T23:59:59.000Z

143

Conductivity fuel cell collector plate and method of fabrication  

DOE Patents [OSTI]

An improved method of manufacturing a PEM fuel cell collector plate is disclosed. During molding a highly conductive polymer composite is formed having a relatively high polymer concentration along its external surfaces. After molding the polymer rich layer is removed from the land areas by machining, grinding or similar process. This layer removal results in increased overall conductivity of the molded collector plate. The polymer rich surface remains in the collector plate channels, providing increased mechanical strength and other benefits to the channels. The improved method also permits greater mold cavity thickness providing a number of advantages during the molding process.

Braun, James C. (Juno Beach, FL)

2002-01-01T23:59:59.000Z

144

Oxidation studies of CrAlON nanolayered coatings on steel plates...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

coatings on steel plates. Abstract: The requirements of low cost and high-temperature corrosion resistance for bipolar interconnect plates in solid oxide fuel cell stacks have...

145

E-Print Network 3.0 - aluminum plate spent Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Diode Laser 77 Top View Side View Aluminum damping plate Aluminum base plate Thermoelectric cooler... was attached to an ... Source: Steck, Daniel A. - Oregon Center for...

146

E-Print Network 3.0 - american-caribbean plate boundary Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

American-Caribbean plate boundary, asthenospheric flow... along the margin of northern South America accommodating east-west South American-Caribbean plate motion... - Caribbean...

147

Method for regeneration of electroless nickel plating solution  

SciTech Connect (OSTI)

An electroless nickel(EN)/hypophosphite plating bath is provided employing acetic acid/acetate as a buffer and which is, as a result, capable of perpetual regeneration while avoiding the production of hazardous waste. A regeneration process is provided to process the spent EN plating bath solution. A concentrated starter and replenishment solution is provided for ease of operation of the plating bath. The regeneration process employs a chelating ion exchange system to remove nickel cations from spent EN plating solution. Phosphites are then removed from the solution by precipitation. The nickel cations are removed from the ion exchange system by elution with hypophosphorous acid and the nickel concentration of the eluate adjusted by addition of nickel salt. The treated solution and adjusted eluate are combined, stabilizer added, and the volume of resulting solution reduced by evaporation to form the bath starter and replenishing solution.

Eisenmann, Erhard T. (5423 Vista Sandia, NE., Albuquerque, NM 87111)

1997-01-01T23:59:59.000Z

148

Method for regeneration of electroless nickel plating solution  

SciTech Connect (OSTI)

An electroless nickel(EN)/hypophosphite plating bath is provided employing acetic acid/acetate as a buffer and which is, as a result, capable of perpetual regeneration while avoiding the production of hazardous waste. A regeneration process is provided to process the spent EN plating bath solution. A concentrated starter and replenishment solution is provided for ease of operation of the plating bath. The regeneration process employs a chelating ion exchange system to remove nickel cations from spent EN plating solution. Phosphites are then removed from the solution by precipitation. The nickel cations are removed from the ion exchange system by elution with hypophosphorus acid and the nickel concentration of the eluate adjusted by addition of nickel salt. The treated solution and adjusted eluate are combined, stabilizer added, and the volume of resulting solution reduced by evaporation to form the bath starter and replenishing solution. 1 fig.

Eisenmann, E.T.

1997-03-11T23:59:59.000Z

149

Next Generation Bipolar Plates for Automotive PEM Fuel Cells  

Broader source: Energy.gov (indexed) [DOE]

Bipolar Plates for Automotive PEM Fuel Cells (Topic 4) GrafTech International, Ltd. * Funding DOE Cost Share Recipient Cost Share TOTAL 2,325,943 581,486 2,907,429 80% 20% 100%...

150

Melt generation in the Earth's mantle at Convergent Plate Margins  

E-Print Network [OSTI]

The five geologic studies presented in this thesis document how the recycling of tectonic plates at subduction zones has a profound effect on the melting behavior of the Earth's mantle. Two experimental studies (Chapters ...

Till, Christy B

2011-01-01T23:59:59.000Z

151

Using Plate Heat Exchangers to Increase Energy Efficiency  

E-Print Network [OSTI]

"In recent years, there has been an increasing awareness of Plate Heat Exchangers (PHE's) in industrial processes around the world. While PHE's have historically been classified as compact heat exchangers, compactness is often a secondary advantage...

Bailey, K.

152

Determination of plate efficiencies for conventional distillation columns  

E-Print Network [OSTI]

DETERMINATION OF PLATE EFFICIENCIES FOR CONVENTIONAL DISTILLATION COIUMNS A Thesis By Thomas Raymond Harris Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1962 Ma)or Sub)ect t Chemical Engineering DETERMINATION OF PLATE EFFICIENCIES FOR CONVENTIONAL DISTILLATION COLUMNS A Thesis Thomas Raymond Harris Approred as to style and content bye Chairman of ommittee Head...

Harris, Thomas Raymond

2012-06-07T23:59:59.000Z

153

Dynamic optimization of a plate reactor start-up  

E-Print Network [OSTI]

Dynamic optimization of a plate reactor start-up Staffan Haugwitz, Per Hagander and John Bagterp Jørgensen Lund-Lyngby-�lborg-dagen 061101 Staffan Haugwitz et al Control of a plate reactor #12;Process configurations : 2 inj. / 1 cool zone T T T T T T T T T T Reactor outletReactant A Reactant B Cooling water uB1 u

154

Understanding nuclei in the upper sd - shell  

SciTech Connect (OSTI)

Nuclei in the upper-sd shell usually exhibit characteristics of spherical single particle excitations. In the recent years, employment of sophisticated techniques of gamma spectroscopy has led to observation of high spin states of several nuclei near A ? 40. In a few of them multiparticle, multihole rotational states coexist with states of single particle nature. We have studied a few nuclei in this mass region experimentally, using various campaigns of the Indian National Gamma Array setup. We have compared and combined our empirical observations with the large-scale shell model results to interpret the structure of these nuclei. Indication of population of states of large deformation has been found in our data. This gives us an opportunity to investigate the interplay of single particle and collective degrees of freedom in this mass region.

Sarkar, M. Saha; Bisoi, Abhijit; Ray, Sudatta [Nuclear Physics Division, Saha Institute of Nuclear Physics, Kolkata 700064 (India); Kshetri, Ritesh [Nuclear Physics Division, Saha Institute of Nuclear Physics, Kolkata 700064, India and Sidho-Kanho-Birsha University, Purulia - 723101 (India); Sarkar, S. [Indian Institute of Engineering Science and Technology, Shibpur, Howrah - 711103 (India)

2014-08-14T23:59:59.000Z

155

Highly conductive, multi-layer composite precursor composition to fuel cell flow field plate or bipolar plate  

DOE Patents [OSTI]

This invention provides a moldable, multiple-layer composite composition, which is a precursor to an electrically conductive composite flow field plate or bipolar plate. In one preferred embodiment, the composition comprises a plurality of conductive sheets and a plurality of mixture layers of a curable resin and conductive fillers, wherein (A) each conductive sheet is attached to at least one resin-filler mixture layer; (B) at least one of the conductive sheets comprises flexible graphite; and (C) at least one resin-filler mixture layer comprises a thermosetting resin and conductive fillers with the fillers being present in a sufficient quantity to render the resulting flow field plate or bipolar plate electrically conductive with a conductivity no less than 100 S/cm and thickness-direction areal conductivity no less than 200 S/cm.sup.2.

Jang, Bor Z. (Centerville, OH); Zhamu, Aruna (Centerville, OH); Guo, Jiusheng (Centerville, OH)

2011-02-15T23:59:59.000Z

156

An elastic plate model for interseismic deformation in subduction Ravi V. S. Kanda1  

E-Print Network [OSTI]

the subducting and overriding plates, as well as zero net steady state vertical offset between the two plates, 1983]. The BSM accomplishes this zero net strain in the overriding plate by parameterizing interseismic case of zero plate thickness, thereby providing an alternative motivation for the BSM. The ESPM also

157

Ultrasonic measurement of the residual stresses in patch welded steel plates  

E-Print Network [OSTI]

, structural steel plates. The two 1.2 in (48 in.) square plates were patch welded in the center to create a residual stress field; and subsequently, one of the plates was stress relieved. The LCR travel-time measurements on the plates not only differentiated...

Junghans, Paul Gerard

1994-01-01T23:59:59.000Z

158

Apparatus for tensile testing plate-type ceramic specimens  

DOE Patents [OSTI]

Apparatus is described for gripping a plate-type tensile specimen having generally T-shaped end regions in a dynamic tension fatigue testing apparatus comprising an annular housing having an open-ended elongated cavity therein, a plurality of hydraulic piston means supported by the housing in a spaced array about the cavity, and a specimen-supporting plate means overlying the piston means at one end of the elongated cavity and displaceable by said piston means in a longitudinal direction with respect to the longitudinal axis of the cavity, said apparatus for gripping a flat plate-type tensile specimen comprising: a pair of elongated pull rods each having oppositely disposed first and second end regions; a pair of mounting means carried by said plate means with each mounting means for pivotally attaching the first end region of each of said pull rods in a central region of said plate means for supporting said pair of elongated pull rods in a side-by-side relationship along a common longitudinal centerline within said cavity; recess means in the second end region of each of said pull rods in adjacently disposed surface regions thereof with said recess means facing one another and each adapted to receive one side of one of the generally T-shaped end regions of the plate-type tensile specimen; and load-bearing means positionable in each of said recess means and adapted to bear against a shoulder on each side of the generally T-shaped end region of the plate-type tensile specimen when a tensile loading is applied thereon.

Liu, K.C.

1993-08-24T23:59:59.000Z

159

Crust and Upper Mantle P Wave Velocity Structure Beneath Valles...  

Open Energy Info (EERE)

Crust and Upper Mantle P Wave Velocity Structure Beneath Valles Caldera, New Mexico- Results from the Jemez Teleseismic Tomography Experiment Jump to: navigation, search OpenEI...

160

Upper crustal faulting in an obliquely extending orogen, structural...  

Open Energy Info (EERE)

eastern California Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: Upper crustal faulting in an obliquely extending orogen,...

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Schlumberger soundings in the Upper Raft River and Raft River...  

Open Energy Info (EERE)

Schlumberger soundings in the Upper Raft River and Raft River Valleys, Idaho and Utah Abstract In 1975, the U.S. Geological Survey made seventy Schlumberger resistivity...

162

Upper crustal structure of an obliquely extending orogen, central...  

Open Energy Info (EERE)

search OpenEI Reference LibraryAdd to library Conference Proceedings: Upper crustal structure of an obliquely extending orogen, central Coso Range, eastern California...

163

Low Cost PEM Fuel Cell Metal Bipolar Plates  

SciTech Connect (OSTI)

Bipolar plate is an important component in fuel cell stacks and accounts for more than 75% of stack weight and volume. The technology development of metal bipolar plates can effectively reduce the fuel cells stack weight and volume over 50%. The challenge is the metal plate corrosion protection at low cost for the broad commercial applications. This project is aimed to develop innovative technological solutions to overcome the corrosion barrier of low cost metal plates. The feasibility of has been demonstrated and patented (US Patent 7,309,540). The plan is to further reduce the cost, and scale up the technology. The project is built on three pillars: 1) robust experimental evidence demonstrating the feasibility of our technology, 2) a team that consists of industrial leaders in fuel cell stack application, design, and manufactures; 3) a low-risk, significant-milestone driven program that proves the feasibility of meeting program objectives The implementation of this project will reduce the fuel cell stack metal bipolar separator plate cost which accounts 15-21% of the overall stack cost. It will contribute to the market adoption of fuel cell technologies. In addition, this corrosion protection technology can be used similar energy devices, such as batteries and electrolyzers. Therefore, the success of the project will be benefit in broad markets.

Wang, Conghua [TreadStone Technologies, Inc.

2013-05-30T23:59:59.000Z

164

Numerical analysis of laminar fluid flow and heat transfer in a parallel plate channel with normally in-line positioned plates  

E-Print Network [OSTI]

NUMERICAL ANALYSIS OF LAMINAR FLUID FLOW AND HEAT TRANSFER IN A PARALLEL PLATE CHANNEL WITH NORMALLY IN-LINE POSITIONED PLATES A Thesis by JOHN GRADY iVICMATH Submitted to the Office of Graduate Studies of Texas AkM University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1991 Major Subject: Mechanical Engineering NUMERICAL ANALYSIS OF LAMINAR FLUID FLOW AND HEAT TRANSFER IN A PARALLEL PLATE CHANNEI WITH NORMALLY IN-LINE POSITIONED PLATES A...

McMath, John Grady

2012-06-07T23:59:59.000Z

165

Laser-based characterization of nuclear fuel plates  

SciTech Connect (OSTI)

Ensuring the integrity of fuel-clad and clad-clad bonding in nuclear fuels is important for safe reactor operation and assessment of fuel performance, yet the measurement of bond strengths in actual fuels has proved challenging. The laser shockwave technique (LST) originally developed to characterize structural adhesion in composites is being employed to characterize interface strength in a new type of plate fuel being developed at Idaho National Laboratory (INL). LST is a non-contact method that uses lasers for the generation and detection of large-amplitude acoustic waves and is well suited for application to both fresh and irradiated nuclear-fuel plates. This paper will report on initial characterization results obtained from fresh fuel plates manufactured by different processes, including hot isostatic pressing, friction stir welding, and hot rolling.

Smith, James A.; Cottle, Dave L.; Rabin, Barry H. [Idaho National Laboratory, Fuel Performance and Design, P.O. Box 1625, Idaho Falls, Idaho, 83415-6188 (United States)

2014-02-18T23:59:59.000Z

166

Fuel cell repeater unit including frame and separator plate  

DOE Patents [OSTI]

An example fuel cell repeater includes a separator plate and a frame establishing at least a portion of a flow path that is operative to communicate fuel to or from at least one fuel cell held by the frame relative to the separator plate. The flow path has a perimeter and any fuel within the perimeter flow across the at least one fuel cell in a first direction. The separator plate, the frame, or both establish at least one conduit positioned outside the flow path perimeter. The conduit is outside of the flow path perimeter and is configured to direct flow in a second, different direction. The conduit is fluidly coupled with the flow path.

Yamanis, Jean; Hawkes, Justin R; Chiapetta, Jr., Louis; Bird, Connie E; Sun, Ellen Y; Croteau, Paul F

2013-11-05T23:59:59.000Z

167

Laser shockwave technique for characterization of nuclear fuel plate interfaces  

SciTech Connect (OSTI)

The US National Nuclear Security Agency is tasked with minimizing the worldwide use of high-enriched uranium. One aspect of that effort is the conversion of research reactors to monolithic fuel plates of low-enriched uranium. The manufacturing process includes hot isostatic press bonding of an aluminum cladding to the fuel foil. The Laser Shockwave Technique (LST) is here evaluated for characterizing the interface strength of fuel plates using depleted Uranium/Mo foils. LST is a non-contact method that uses lasers for the generation and detection of large amplitude acoustic waves and is therefore well adapted to the quality assurance of this process. Preliminary results show a clear signature of well-bonded and debonded interfaces and the method is able to classify/rank the bond strength of fuel plates prepared under different HIP conditions.

Perton, M.; Levesque, D.; Monchalin, J.-P.; Lord, M. [National Research Council Canada, 75 de Mortagne Blvd, Boucherville, Quebec, J4B 6Y4 (Canada); Smith, J. A.; Rabin, B. H. [Idaho National Laboratory, P.O. Box 1625, Idaho Falls, ID 83415-6188 (United States)

2013-01-25T23:59:59.000Z

168

Laser Shockwave Technique For Characterization Of Nuclear Fuel Plate Interfaces  

SciTech Connect (OSTI)

The US National Nuclear Security Agency is tasked with minimizing the worldwide use of high-enriched uranium. One aspect of that effort is the conversion of research reactors to monolithic fuel plates of low-enriched uranium. The manufacturing process includes hot isostatic press bonding of an aluminum cladding to the fuel foil. The Laser Shockwave Technique (LST) is here evaluated for characterizing the interface strength of fuel plates using depleted Uranium/Mo foils. LST is a non-contact method that uses lasers for the generation and detection of large amplitude acoustic waves and is therefore well adapted to the quality assurance of this process. Preliminary results show a clear signature of well-bonded and debonded interfaces and the method is able to classify/rank the bond strength of fuel plates prepared under different HIP conditions.

James A. Smith; Barry H. Rabin; Mathieu Perton; Daniel Lévesque; Jean-Pierre Monchalin; Martin Lord

2012-07-01T23:59:59.000Z

169

Laser-Based Characterization of Nuclear Fuel Plates  

SciTech Connect (OSTI)

Ensuring the integrity of fuel-clad and clad-clad bonding in nuclear fuels is important for safe reactor operation and assessment of fuel performance, yet the measurement of bond strengths in actual fuels has proved challenging. The laser shockwave technique (LST) originally developed to characterize structural adhesion in composites is being employed to characterize interface strength in a new type of plate fuel being developed at Idaho National Laboratory (INL). LST is a non-contact method that uses lasers for the generation and detection of large-amplitude acoustic waves and is well suited for application to both fresh and irradiated nuclear-fuel plates. This paper will report on initial characterization results obtained from fresh fuel plates manufactured by different processes, including hot isostatic pressing, friction stir welding, and hot rolling.

James A. Smith; David L. Cottle; Barry H. Rabin

2013-07-01T23:59:59.000Z

170

Diversity in the upper management of leading Texas contractors  

E-Print Network [OSTI]

of the overall sample, Gender, Position, or Ethnicity categories. It was found that the Ethnic make up of upper management is not representative of the Ethnic make up of the Texas or national construction workforces, while the Gender make up of upper management...

Lawrence, Anne Nicole

2003-01-01T23:59:59.000Z

171

Upper bounds for multiphase composites in any dimension  

E-Print Network [OSTI]

We prove a rigorous upper bound for the effective conductivity of an isotropic composite made of several isotropic components in any dimension. This upper bound coincides with the Hashin Shtrikman bound when the volume ratio of all phases but any two vanish.

Luis Silvestre

2010-10-12T23:59:59.000Z

172

Scale-up of Carbon/Carbon Bipolar Plates  

SciTech Connect (OSTI)

This project was focused upon developing a unique material technology for use in PEM fuel cell bipolar plates. The carbon/carbon composite material developed in this program is uniquely suited for use in fuel cell systems, as it is lightweight, highly conductive and corrosion resistant. The project further focused upon developing the manufacturing methodology to cost-effectively produce this material for use in commercial fuel cell systems. United Technology Fuel Cells Corp., a leading fuel cell developer was a subcontractor to the project was interested in the performance and low-cost potential of the material. The accomplishments of the program included the development and testing of a low-cost, fully molded, net-shape carbon-carbon bipolar plate. The process to cost-effectively manufacture these carbon-carbon bipolar plates was focused on extensively in this program. Key areas for cost-reduction that received attention in this program was net-shape molding of the detailed flow structures according to end-user design. Correlations between feature detail and process parameters were formed so that mold tooling could be accurately designed to meet a variety of flow field dimensions. A cost model was developed that predicted the cost of manufacture for the product in near-term volumes and long-term volumes (10+ million units per year). Because the roduct uses lowcost raw materials in quantities that are less than competitive tech, it was found that the cost of the product in high volume can be less than with other plate echnologies, and can meet the DOE goal of $4/kW for transportation applications. The excellent performance of the all-carbon plate in net shape was verified in fuel cell testing. Performance equivalent to much higher cost, fully machined graphite plates was found.

David P. Haack

2009-04-08T23:59:59.000Z

173

Vibration of circular plates, of several thicknesses, with three supports  

E-Print Network [OSTI]

~ ~ ~ ~ ~ ~ e ~ o ~ ~ i Prccedure and DeeoriPt'alen Of APPSXat'aua ~ ~ e ~ a ~ 0 ~ ~ i EmPirioal Ccrrelabicn Of Dataa ~ ~ ~ 1 ~ ~ ~ 01 ~ ~ ~ ~ ~ ~ ~ ~ i Kathemat, ical Theory of Thin Plates ~ a ~ ~ ~ ~ ~ 1 ~ a ~ ~ ~ Heeultaa ~ ~ ~ ~ ~ a... (cps) e M = symmetric mode, ie. 1, 2, 3, and 4. h= thickness of circular plate, in, Vhen there are mox'e than-thoro variables involved in the x esult, s of an experimental research, an empirical xelat, ionsh1p concerning the several variables may...

Ballentine, John Richard

2012-06-07T23:59:59.000Z

174

Optical processing furnace with quartz muffle and diffuser plate  

DOE Patents [OSTI]

An optical furnace for annealing a process wafer comprising a source of optical energy, a quartz muffle having a door to hold the wafer for processing, and a quartz diffuser plate to diffuse the light impinging on the quartz muffle; a feedback system with a light sensor located in the door or wall of the muffle is also provided for controlling the source of optical energy. The quartz for the diffuser plate is surface etched (to give the quartz diffusive qualities) in the furnace during a high intensity burn-in process.

Sopori, Bhushan L. (Denver, CO)

1995-01-01T23:59:59.000Z

175

Multi-well sample plate cover penetration system  

DOE Patents [OSTI]

An apparatus for penetrating a cover over a multi-well sample plate containing at least one individual sample well includes a cutting head, a cutter extending from the cutting head, and a robot. The cutting head is connected to the robot wherein the robot moves the cutting head and cutter so that the cutter penetrates the cover over the multi-well sample plate providing access to the individual sample well. When the cutting head is moved downward the foil is pierced by the cutter that splits, opens, and folds the foil inward toward the well. The well is then open for sample aspiration but has been protected from cross contamination.

Beer, Neil Reginald (Pleasanton, CA)

2011-12-27T23:59:59.000Z

176

Global coupling at 660 km is proposed to explain plate tectonics and the generation of the earth's magnetic field  

E-Print Network [OSTI]

The presence of low viscosity layers in the mantle is supported by line of geological and geophysical observations. Recent high pressure and temperature investigations indicated that partial carbonate melt should exist at the bottom of the lithosphere and at 660 km. The presence of few percent carbonate melt reduces the viscosity by several order of magnitude. The globally existing 660 km very low viscosity layer allows the development of differential rotation between the upper and lower mantle. This differential rotation between the 660 km outer shell and the rest of the earth offers a plausible explanation for plate tectonics and for the generation of the earth's magnetic field. Simple dynamo model is proposed, which able to reproduce all of the features of the contemporary and, within reasonable uncertainty, the paleomagnetic field. The model is also consistent with geological and geophysical observations.

Jozsef Garai

2007-09-10T23:59:59.000Z

177

Modified Visible and Infrared Optical Design for the ITER Upper Ports  

SciTech Connect (OSTI)

This document reports the results of a follow-on optical design study of visible-light and infrared optics for the ITER upper ports, performed by LLNL under contract for the US ITER Project Office. The major objectives of this work are to move the viewing aperture closer to the plasma so that the optical path does not cut through any adjacent blanket shield module other than the module designated for the port; move optics forward into the port tube to increase the aperture size and therefore improve the spatial resolution; assess the trade-off between spatial resolution and spatial coverage by reducing the field of view; and create a mechanical model with a neutron labyrinth. Here we show an optical design incorporating all these aspects. The new design fits into a 360 mm ID tube, as did the previous design. The entrance aperture is increased from 10 mm to 21 mm, with a corresponding increase in spatial resolution. The Airy disk diameter for 3.8 {micro}m wavelength IR light is 5.1 mm at the most distant target point in the field of view. The field of view is reduced from 60 toroidal degrees (full toroidal coverage with 6 cameras) to 50 toroidal degrees. The 10 degrees eliminated are those nearest the camera, which have the poorest view of the divertor plate and in fact saw little of the plate. The Cassegrain telescope that was outside the vacuum windows in the previous design is now in vacuum, along with lenses for visible light. The Cassegrain for visible light is eliminated. An additional set of optical relay lenses is added for the visible and for the IR.

Lasnier, C; Seppala, L; Morris, K

2008-04-24T23:59:59.000Z

178

Film cooling on a flat plate: investigating density  

E-Print Network [OSTI]

This study is an investigation of two specific effects on turbine blade film cooling. The effect of coolant to mainstream density ratio and upstream steps was studied. The studies were conducted on two flat plates with 4mm cylindrical film cooling...

Grizzle, Joshua Peter Fletcher

2009-05-15T23:59:59.000Z

179

Optical processing furnace with quartz muffle and diffuser plate  

DOE Patents [OSTI]

An optical furnace for annealing a process wafer comprising a source of optical energy, a quartz muffle having a door to hold the wafer for processing, and a quartz diffuser plate to diffuse the light impinging on the quartz muffle; a feedback system with a light sensor located in the wall of the muffle is also provided for controlling the source of optical energy.

Sopori, Bhushan L. (Denver, CO)

1996-01-01T23:59:59.000Z

180

Microwave sintering of single plate-shaped articles  

DOE Patents [OSTI]

Apparatus and method are disclosed for high temperature sintering of plate-shaped articles of alumina, magnesia, silica, yttria, zirconia, and mixtures thereof using microwave radiation. An article is placed within a sintering structure located within a sintering container which is placed in a microwave cavity for heating. The rates at which heating and cooling take place is controlled. 2 figs.

Katz, J.D.; Blake, R.D.

1995-07-11T23:59:59.000Z

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Low Cost PEM Fuel Cell Metal Bipolar Plates  

Broader source: Energy.gov (indexed) [DOE]

manufacture. - Demonstrate our metal plate application in portable, stationary and automobile fuel cell systems. 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50...

182

anterior locking plates: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

acq(A)2; rel(A)3; acq(C)10; rel(C)11; Q : acq(B)6; rel(B)7; acq(D)14; rel(D)15 Mller-Olm, Markus 277 MICROPLATES OptiPlates (white and black) Biology and Medicine Websites...

183

Enhanced radiative heat transfer between nanostructured gold plates  

E-Print Network [OSTI]

We compute the radiative heat transfer between nanostructured gold plates in the framework of the scattering theory. We predict an enhancement of the heat transfer as we increase the depth of the corrugations while keeping the distance of closest approach fixed. We interpret this effect in terms of the evolution of plasmonic and guided modes as a function of the grating's geometry.

R. Guérout; J. Lussange; F. S. S. Rosa; J. -P. Hugonin; D. A. R. Dalvit; J. -J. Greffet; A. Lambrecht; S. Reynaud

2012-03-07T23:59:59.000Z

184

STEEL PLATE SHEAR WALL BUILDINGS: DESIGN REQUIREMENTS AND RESEARCH  

E-Print Network [OSTI]

STEEL PLATE SHEAR WALL BUILDINGS: DESIGN REQUIREMENTS AND RESEARCH Michel Bruneau, P.E. 1 Dr. Bruneau is conducting research on the seismic evaluation and retrofit of existing steel bridges, steel of this research, and has co- authored the book "Ductile Design of Steel Structures" published in 1997 by Mc

Bruneau, Michel

185

Cost Effective Surface Modification For Metallic Bipolar Plates  

E-Print Network [OSTI]

.g. stamping or corrugation) ·Gas impermeable ·Higher electrical and thermal conductivities Relates to DOE R&D Plan Component Technical Barriers Task 14 "Alternative bipolar plate materials/coatings that are low an electrical- conductive and corrosion-resistant nitride surface layer during thermal (gas) nitriding ·Existing

186

Plate-Based Fuel Processing System Final Report  

SciTech Connect (OSTI)

On-board reforming of liquid fuels into hydrogen is an enabling technology that could accelerate consumer usage of fuel cell powered vehicles. The technology would leverage the convenience of the existing gasoline fueling infrastructure while taking advantage of the fuel cell efficiency and low emissions. Commercial acceptance of on-board reforming faces several obstacles that include: (1) startup time, (2) transient response, and (3) system complexity (size, weight and cost). These obstacles are being addressed in a variety of projects through development, integration and optimization of existing fuel processing system designs. In this project, CESI investigated steam reforming (SR), water-gas-shift (WGS) and preferential oxidation (PrOx) catalysts while developing plate reactor designs and hardware where the catalytic function is integrated into a primary surface heat exchanger. The plate reactor approach has several advantages. The separation of the reforming and combustion streams permits the reforming reaction to be conducted at a higher pressure than the combustion reaction, thereby avoiding costly gas compression for combustion. The separation of the two streams also prevents the dilution of the reformate stream by the combustion air. The advantages of the plate reactor are not limited to steam reforming applications. In a WGS or PrOx reaction, the non-catalytic side of the plate would act as a heat exchanger to remove the heat generated by the exothermic WGS or PrOx reactions. This would maintain the catalyst under nearly isothermal conditions whereby the catalyst would operate at its optimal temperature. Furthermore, the plate design approach results in a low pressure drop, rapid transient capable and attrition-resistant reactor. These qualities are valued in any application, be it on-board or stationary fuel processing, since they reduce parasitic losses, increase over-all system efficiency and help perpetuate catalyst durability. In this program, CESI took the initial steam reforming plate-reactor concept and advanced it towards an integrated fuel processing system. A substantial amount of modeling was performed to guide the catalyst development and prototype hardware design and fabrication efforts. The plate-reactor mechanical design was studied in detail to establish design guidelines which would help the plate reactor survive the stresses of repeated thermal cycles (from start-ups and shut-downs). Integrated system performance modeling was performed to predict system efficiencies and determine the parameters with the most significant impact on efficiency. In conjunction with the modeling effort, a significant effort was directed towards catalyst development. CESI developed a highly active, sulfur tolerant, coke resistant, precious metal based reforming catalyst. CESI also developed its own non-precious metal based water-gas shift catalyst and demonstrated the catalysts durability over several thousands of hours of testing. CESI also developed a unique preferential oxidation catalyst capable of reducing 1% CO to < 10 ppm CO over a 35 C operating window through a single pass plate-based reactor. Finally, CESI combined the modeling results and steam reforming catalyst development efforts into prototype hardware. The first generation 3kW(e) prototype was fabricated from existing heat-exchanger plates to expedite the fabrication process. This prototype demonstrated steady state operation ranging from 5 to 100% load conditions. The prototype also demonstrated a 20:1 turndown ratio, 10:1 load transient operation and rapid start-up capability.

Carlos Faz; Helen Liu; Jacques Nicole; David Yee

2005-12-22T23:59:59.000Z

187

Statistical Confirmation of a Stellar Upper Mass Limit  

E-Print Network [OSTI]

We derive the expectation value for the maximum stellar mass (m_max) in an ensemble of N stars, as a function of the IMF upper-mass cutoff (m_up) and N. We statistically demonstrate that the upper IMF of the local massive star census observed thus far in the Milky Way and Magellanic Clouds clearly exhibits a universal upper mass cutoff around 120 - 200 M_sun for a Salpeter IMF, although the result is more ambiguous for a steeper IMF.

M. S. Oey; C. J. Clarke

2005-01-07T23:59:59.000Z

188

Normal and lateral Casimir forces between deformed plates  

SciTech Connect (OSTI)

The Casimir force between macroscopic bodies depends strongly on their shape and orientation. To study this geometry dependence in the case of two deformed metal plates, we use a path-integral quantization of the electromagnetic field which properly treats the many-body nature of the interaction, going beyond the commonly used pairwise summation (PWS) of van der Waals forces. For arbitrary deformations we provide an analytical result for the deformation induced change in the Casimir energy, which is exact to second order in the deformation amplitude. For the specific case of sinusoidally corrugated plates, we calculate both the normal and the lateral Casimir forces. The deformation induced change in the Casimir interaction of a flat and a corrugated plate shows an interesting crossover as a function of the ratio of the mean plate distance H to the corrugation length {lambda}: For {lambda}<>H. The amplitude of the lateral force between two corrugated plates which are out of registry is shown to have a maximum at an optimal wavelength of {lambda}{approx_equal}2.5 H. With increasing H/{lambda} > or approx. 0.3 the PWS approach becomes a progressively worse description of the lateral force due to many-body effects. These results may be of relevance for the design and operation of novel microelectromechanical systems (MEMS) and other nanoscale devices.

Emig, Thorsten; Hanke, Andreas; Golestanian, Ramin; Kardar, Mehran [Institut fuer Theoretische Physik, Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Cologne (Germany); Institut fuer Theoretische Physik, Universitaet Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart (Germany); Institute for Advanced Studies in Basic Sciences, Zanjan 45195-159 (Iran, Islamic Republic of); Institute for Studies in Theoretical Physics and Mathematics, P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of); Physics Department, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

2003-02-01T23:59:59.000Z

189

Laminated exfoliated graphite composite-metal compositions for fuel cell flow field plate or bipolar plate applications  

DOE Patents [OSTI]

An electrically conductive laminate composition for fuel cell flow field plate or bipolar plate applications. The laminate composition comprises at least a thin metal sheet having two opposed exterior surfaces and a first exfoliated graphite composite sheet bonded to the first of the two exterior surfaces of the metal sheet wherein the exfoliated graphite composite sheet comprises: (a) expanded or exfoliated graphite and (b) a binder or matrix material to bond the expanded graphite for forming a cohered sheet, wherein the binder or matrix material is between 3% and 60% by weight based on the total weight of the first exfoliated graphite composite sheet. Preferably, the first exfoliated graphite composite sheet further comprises particles of non-expandable graphite or carbon in the amount of between 3% and 60% by weight based on the total weight of the non-expandable particles and the expanded graphite. Further preferably, the laminate comprises a second exfoliated graphite composite sheet bonded to the second surface of the metal sheet to form a three-layer laminate. Surface flow channels and other desired geometric features can be built onto the exterior surfaces of the laminate to form a flow field plate or bipolar plate. The resulting laminate has an exceptionally high thickness-direction conductivity and excellent resistance to gas permeation.

Zhamu, Aruna; Shi, Jinjun; Guo, Jiusheng; Jang, Bor Z

2014-05-20T23:59:59.000Z

190

Buoyancy of the continental upper mantle Robyn K. Kelly  

E-Print Network [OSTI]

Buoyancy of the continental upper mantle Robyn K. Kelly Department of Geology and Geophysics, MIT). Received 21 June 2002; Revised 11 October 2002; Accepted 15 October 2002; Published 18 February 2003. Kelly

191

Characterization of Sea Turtle Nesting on the Upper Texas Coast  

E-Print Network [OSTI]

Nearly annual record Kemp’s ridley sea turtle (Lepidochelys kempii) nesting activity on the upper Texas coast (UTC; defined as beaches from Sabine Pass to Matagorda Peninsula), where scientifically verifiable nesting commenced in 2002, has occurred...

Hughes, Christi Lynn

2014-05-06T23:59:59.000Z

192

Hydrology and Glaciers in the Upper Indus Basin  

E-Print Network [OSTI]

Examines the state of the science associated with the snow and ice hydrology in the Upper Indus Basin (IUB), reviewing the literature and data available on the present and projected role of glaciers, snow fields, and stream ...

Yu, Winston

193

Improvable upper bounds to the piezoelectric polaron ground state energy  

E-Print Network [OSTI]

It was shown that an infinite sequence of improving non-increasing upper bounds to the ground state energy (GSE) of a slow-moving piezoeletric polaron can be devised.

A. V. Soldatov

2014-12-31T23:59:59.000Z

194

Upper bounds on minimum distance of nonbinary quantum stabilizer codes  

E-Print Network [OSTI]

The most popular class of quantum error correcting codes is stabilizer codes. Binary quantum stabilizer codes have been well studied, and Calderbank, Rains, Shor and Sloane (July 1998) have constructed a table of upper bounds on the minimum distance...

Kumar, Santosh

2005-11-01T23:59:59.000Z

195

Sandia National Laboratories: Upper Rio Grande Simulation Model...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Energy-Water Planning Upper Rio Grande Simulation Model (URGSiM) Contact Jesse Roach jdroach@sandia.gov (505) 284-9367 Last Updated: April 23, 2012 Go To Top ...

196

E-Print Network 3.0 - anisotropic plates subjected Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

in a Langmuir trough experiment is the Wilhelmy plate.1... The plate measures the net tension on the surface. The reported surface pressure is then the tension ... Source: Lee,...

197

Development of fabrication techniques for europia/iron cermet reactor control-arm plates  

SciTech Connect (OSTI)

Dense europia spheroids were dispersed in iron powder prior to pressing and sintering. The plates had adequate strength and possessed a neutron absorption worth in excess of comparable cadmium plates. 4 refs.

Moore, D.A.; Tarrant, E.A.

1982-06-01T23:59:59.000Z

198

Buckling and vibration of orthotropic plates with an internal line hinge  

E-Print Network [OSTI]

locations, and edge support conditions. In particular, buckling factors are determined for plates with modulus ratios of 1, 3, 10 and 25 using the classical plate theory and first order shear deformation theory. Vibration frequencies are obtained...

Gupta, Praveen R.

2001-01-01T23:59:59.000Z

199

Vibration suppression of laminated composite plates using embedded smart material layers  

E-Print Network [OSTI]

In this study, a complete theoretical formulation of laminated composite plates with integrated smart material layers that serve as sensors and/or actuators is presented for the vibration suppression of laminated composite plates. The third...

Krishnan, Sivasubramaniam

2000-01-01T23:59:59.000Z

200

Vibration control in plates by uniformly distributed PZT actuators interconnected via electric networks  

E-Print Network [OSTI]

improve the performances of piezoelectric actuation. internal resonance / equivalent circuits 1Vibration control in plates by uniformly distributed PZT actuators interconnected via electric vibrations of plates by means of a set of electrically-interconnected piezoelectric actuators is described

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

E-Print Network 3.0 - automated microbiology plating Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

need to be performed as part of (automated version of) assay 1.1.2. Identify appropriate micro-plate... plates? Does the automation (material handling robot) have sufficient...

202

New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print Wednesday, 31 August 2005 00:00...

203

Invited Paper Shape Control of Composite Material Plates Using Piezoelectric Actuators  

E-Print Network [OSTI]

of smart structures. These material include piezoelectric polymers and ceramics, shape memory alloysInvited Paper Shape Control of Composite Material Plates Using Piezoelectric Actuators Brij N control of composite material plates using piezoelectric actuators. A finite element formulation

204

Manufacturing of composite violin top plates and design of composite tailpieces By : Maxime Beaulieu  

E-Print Network [OSTI]

the Chladni pattern method and Tap Tone method. ·A qualitative analysis of the acoustics when the plates

Barthelat, Francois

205

Geology, volcanology and geochemistry Drainage pattern and regional morphostructure at Melka Kunture (Upper Awash, Ethiopia) ........................83  

E-Print Network [OSTI]

at Melka Kunture (Upper Awash, Ethiopia) ........................83 Guillaume Bardin, Jean-Paul Raynal, Guy Kieffer Volcanic markers in coarse alluvium at Melka Kunture (Upper Awash, Ethiopia (Upper Awash, Ethiopia) ....................................................103 Gérard Poupeau, Guy

Paris-Sud XI, Université de

206

Preservation of contrasting geothermal gradients across the Caribbean-North America plate  

E-Print Network [OSTI]

Preservation of contrasting geothermal gradients across the Caribbean-North America plate boundary the North American and Caribbean plates, document a sharp cooling age discontinuity across the fault the Caribbean-North America plate boundary (Motagua Fault, Guatemala), Tectonics, 32, 993­1010, doi:10.1002/tect

Paris-Sud XI, Université de

207

Effect of Plating Variables on Whisker Formation in Pure Tin Films  

E-Print Network [OSTI]

Effect of Plating Variables on Whisker Formation in Pure Tin Films Stephanie Miller Advisors & Materials Engineering, Washington State University Introduction Tin whiskers are single-crystal filaments the effect of plating variables on whisker growth in tin-plated copper samples, with the goal of finding

Collins, Gary S.

208

Electroless iron plating on pure magnesium for biomedical applications Xingkai Zhang a  

E-Print Network [OSTI]

: Biomaterials Deposition Corrosion Thin films a b s t r a c t Electroless nickel plating is usually adopted geometries. Electroless nickel plating [10] is usually used to protect the magnesium alloy from corrosionElectroless iron plating on pure magnesium for biomedical applications Xingkai Zhang a , Wei Han a

Zheng, Yufeng

209

Antiproton, positron, and electron imaging with a microchannel plate/phosphor detector  

E-Print Network [OSTI]

Antiproton, positron, and electron imaging with a microchannel plate/phosphor detector ALPHA; accepted 2 November 2009; published online 1 December 2009 A microchannel plate MCP /phosphor screen Microchannel plate MCP /phosphor screen based diag- nostics have proved invaluable in studying the evolution

Fajans, Joel

210

Author's personal copy Investigation of effect of polyurea on response of steel plates  

E-Print Network [OSTI]

Author's personal copy Investigation of effect of polyurea on response of steel plates to impulsive the results of the response of monolithic steel plates and steel-polyurea bilayer plates to impulsive blast), it will magnify the initial shock effect and promote fail- ure. These experimental results are paralleled

Nemat-Nasser, Sia

211

FRACTURE INVESTIGATION IN FRP PLATE DEBONDING and C.J. Burgoyne1  

E-Print Network [OSTI]

1 FRACTURE INVESTIGATION IN FRP PLATE DEBONDING G.X. Guan1 and C.J. Burgoyne1 1 Department. The plate debonding is clearly a fracture event that is initiated from the inevitable flaws in the concrete fracture observation for the plate debonding failure that occurs in the concrete cover layer. This paper

Burgoyne, Chris

212

Response of a slotted plate flow meter to horizontal two phase flow  

E-Print Network [OSTI]

meter is always better in performance and accuracy than the standard orifice plate flow meter. This study is primarily based on how a slotted plate responds to horizontal two-phase flow with air and water being used as the working fluids. The plates...

Muralidharan, Vasanth

2005-02-17T23:59:59.000Z

213

On the effective plate thickness of monolayer graphene from flexural wave propagation  

E-Print Network [OSTI]

On the effective plate thickness of monolayer graphene from flexural wave propagation Sung Youb Kim utilize classical molecular dynamics to study flexural, or transverse wave propagation in monolayer) mode of wave propagation in a thin plate with plate thickness of h ¼ 0:104 nm. Finally, we find

Lin, Xi

214

Optimal piezo-electro-mechanical coupling to control plate vibrations  

E-Print Network [OSTI]

A new way of coupling electrical and mechanical waves, using piezoelectric effect, is presented here. Since the energy exchange between two systems supporting wave propagation is maximum when their evolution is governed by similar equations, hence, an optimal electromechanical coupling is obtained by designing an electric network which is "analog" to the mechanical structure to be controlled. In this paper, we exploit this idea to enhance the coupling, between a Kirchhoff-Love plate and one possible synthesis of its circuital analog, as obtained by means of a set of piezoelectric actuators uniformly distributed upon the plate. It is shown how this approach allows for an optimal energy exchange between the mechanic and the electric forms independent of the modal evolution of the structure. Moreover, we show how an efficient electric dissipation of the mechanical energy can be obtained adding dissipative elements in the electric network.

S. Alessandroni; F. dell'Isola; F. Frezza

2010-08-30T23:59:59.000Z

215

Optical processing furnace with quartz muffle and diffuser plate  

DOE Patents [OSTI]

An optical furnace for annealing a process wafer is disclosed comprising a source of optical energy, a quartz muffle having a door to hold the wafer for processing, and a quartz diffuser plate to diffuse the light impinging on the quartz muffle; a feedback system with a light sensor located in the wall of the muffle is also provided for controlling the source of optical energy. 5 figs.

Sopori, B.L.

1996-11-19T23:59:59.000Z

216

Electroless plating of graphite with copper and nickel  

SciTech Connect (OSTI)

Decommissioning in the European Union of gas-cooled nuclear reactors using graphite as the moderator will generate a large amount of irradiated graphite as waste. Graphite is a radioactive waste of relatively low activity and consequently the options considered for the management of the waste may include: (i) incineration, (ii) ocean bed disposal, (iii) deep geological disposal, and (iv) shallow land burial. In case the last is the selected mode, an appropriate conditioning procedure is necessary before final disposal, by covering the graphite with a material avoiding or reducing the emission of radionuclides to its surrounding. This work analyses the possibility of conditioning graphite pieces (with a large proportion of pores of different sizes up to 100 {micro}m) with a metal coating of copper or nickel produced by electroless plating, with the aim of completely isolating the graphite from its surrounding. Electroless plating with copper results in a very large proportion of pores filled or covered, but a fraction of the pores remain in the graphite, which decreases with increasing thickness of metal deposit. Furthermore, the copper plating is permeable to liquids and consequently the graphite does not become completely isolated from the surrounding. The percentage of porosity filled or covered by nickel deposits is similar to copper, but they are not permeable to liquids, at least when the thickness is relatively high, and consequently the access of the liquids to the graphite is rather limited. However, when electroless plating with copper is followed by nickel deposition the graphite becomes isolated from the exterior.

Caturla, F.; Molina, F.; Molina-Sabio, M.; Rodriguez-Reinoso, F. [Univ. de Alicante (Spain). Dept. de Quimica Inorganica; Esteban, A. [CIEMAT, Madrid (Spain)

1995-12-01T23:59:59.000Z

217

Low Cost PEM Fuel Cell Metal Bipolar Plates  

E-Print Network [OSTI]

Low Cost PEM Fuel Cell Metal Bipolar Plates CH Wang TreadStone Technologies, Inc. Fuel Cell Project, stationary and automobile fuel cell systems. $0.00 $0.05 $0.10 $0.15 $0.20 $0.25 $0.30 $0.35 $0.40 $0.45 $0. · The technology has been evaluated by various clients and used in portable fuel cell power systems. Corporate

218

Evaluation of tracking flat plate and concentrator PV systems  

SciTech Connect (OSTI)

Arizona Public Service Company has conducted side-by-side field tests of most of the leading tracking flat plate and concentrating PV technologies. The results verify the added value due to tracking, but show that additional reliability improvements are needed in most cases. Concentrator PV systems can be high performers in sunny regions. In addition, a novel inverter system design by Raytheon has demonstrated excellent performance and promises to be more reliable and have lower cost than competing technologies.

Lepley, T. [Phasor Energy Co., Phoenix, AZ (United States); Hammond, B.; Harris, A. [Arizona State Univ., Tempe, AZ (United States)

1997-12-31T23:59:59.000Z

219

Distributed Roughness Receptivity in a Flat Plate Boundary Layer  

E-Print Network [OSTI]

- Distributed Receptivity . . . . . 6 2. FACILITY DESCRIPTION - THE KLEBANOFF–SARIC WIND TUNNEL 11 2.1 Test Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2 Fan and Motor... of this dissertation describes the Klebanoff–Saric Wind Tunnel facility, which was used for this experiment. Section 3 describes the experimental setup (roughness design and the flat plate model) and defines the metrics by which the flow field is decomposed...

Kuester, Matthew Scott

2014-04-18T23:59:59.000Z

220

aux propositions Monte Verit Le Congressi Stefano Franscini, plate-  

E-Print Network [OSTI]

Appel aux propositions Monte Verità Le Congressi Stefano Franscini, plate- forme de congrès de l'Ecole polytechnique fédérale de Zurich, offre la possibilité d'or- ganiser des conférences de recherche au Monte senior et junior, séjournant au Monte Verità pendant toute la durée de la conférence Le formulaire de

Richner, Heinz

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Magnetostructural phase transition in electroless-plated Ni nanoarrays  

SciTech Connect (OSTI)

Ni nanoarrays were synthesized by electroless-plating and shaped by an anodic aluminum oxide template. The as-plated arrays exhibited superparamagnetic (SM) ordering resulting from nanocrystalline microstructure. Ferromagnetic (FM) ordering was found to be restored as the arrays' crystallinity was enhanced upon post-annealing. The microstructure (crystallinity) and the FM ordering are strongly coupled, revealing a magneto-structural correlation for the arrays. The magnetostructural properties of the arrays can be controlled by post-annealing, where the magnetization is proportional to the annealing temperature. The electroless-plated arrays synthesized in this work display magnetic anisotropy not found in electroplated ones. This is likely attributed to the nature of the clusterlike microstructure, whose cluster-boundaries may confine the FM rotation within the cluster. The spin-polarization was probed by x-ray magnetic circular dichroism while the arrays underwent the SM{yields}FM phase transition. The sum-rules results reveal that the total magnetization of the arrays is dominated by spin moment (m{sub spin}). The change in m{sub spin} is responsible for the SM{yields}FM phase transition upon annealing, as well as for the loss of magnetization upon temperature increase that we observed macroscopically.

Huang, Chun-Chao; Lo, Chih-Chieh; Tseng, Yuan-Chieh; Liu, Chien-Min; Chen, Chih [Department of Materials Science and Engineering, National Chiao Tung University 1001, Ta Hsueh Road, Hsin-Chu 30010, Taiwan (China)

2011-06-01T23:59:59.000Z

222

Micromechanisms of ductile fracturing of DH-36 steel plates under impulsive loads and influence of polyurea reinforcing  

E-Print Network [OSTI]

of ductile fracturing of DH-36 steel plates under impulsiveductile fracturing of DH-36 steel plates subjected to blast-microstructure of the deformed steel samples also revealed

Amini, M. R.; Nemat-Nasser, S.

2010-01-01T23:59:59.000Z

223

Possibility of corrector plate tuning of x-ray focusing  

SciTech Connect (OSTI)

Schemes for focusing a hard x-ray beam to a small spot are described. The theoretical minimum spot size, assuming perfect mirror shape, is shown to be 4 nm FWHM, independent of x-ray wavelength. This is less than the 10 nm previously said to be the minimum achievable diffraction-limited x-ray spot size. While providing the penetrating power only possible with x rays, this approaches the resolution needed to image individual atoms or atomic layers. However, the perfect mirror assumption is physically unrealistic. This paper discusses the compensation of mirror shape errors by a corrector plate and shows that the tolerances for corrector plate shape are far looser than are tolerances for mirror shape. The full eventual success of achieving theoretical minimum resolution will require mirror shape precision considerably better than has been achieved at this time, though far looser than would be required for simpleminded paraboloidal focusing. Two variants of the scheme, subject to the same mathematical treatment, are described. (i) The ''corrector plate'' name is copied from the similarly functioning element of the same name in a Schmidt camera. The focusing is achieved using glancing, yet coherent, reflection from a high-Z paraboloidal mirror. The strategy is to obtain dominant focusing from reflection and to compensate with weak refractive focusing. The reflective focusing is strong and achromatic but insufficiently accurate. The refractive focusing is weak and chromatic but highly accurate. The corrector plate improves resolution the way eyeglasses help a person to see. It can, for example, be ''fitted'' the same trial-and-error way an optometrist establishes a prescription for glasses. Dimensional tolerances for the compensator are far looser than would be needed for a mirror to achieve the same resolution. Unlike compound refractive lenses, attenuation will be small, at least for wavelengths longer than 1 A, because the compensation layer is thin. (ii) For this variant, the corrector plate is a washer-shaped refractive or Fresnel lens, and the mirror is (theoretically) a perfect cone. All focusing is provided by the lens. Even though the cone provides no focusing, it improves the resolution by increasing the numerical aperture of the device. Compared to a paraboloidal shape, it is assumed that the conical shape can be more accurately fabricated. Of the two variants, only the first variant is, in principle, capable of achieving the theoretical minimum resolution. Configurations are suggested, in both case (i) and case (ii), that use currently possible construction precisions to produce resolutions better than have been achieved to date. However, both results will remain well above the theoretical minimum until fabrication techniques have been developed that provide greater precision than is possible at this time.

Talman, Richard

2009-05-01T23:59:59.000Z

224

FULL SIZE U-10MO MONOLITHIC FUEL FOIL AND FUEL PLATE FABRICATION-TECHNOLOGY DEVELOPMENT  

SciTech Connect (OSTI)

Full-size U10Mo foils are being developed for use in high density LEU monolithic fuel plates. The application of a zirconium barrier layer too the foil is applied using a hot co-rolling process. Aluminum clad fuel plates are fabricated using Hot Isostatic Pressing (HIP) or a Friction Bonding (FB) process. An overview is provided of ongoing technology development activities, including: the co-rolling process, foil shearing/slitting and polishing, cladding bonding processes, plate forming, plate-assembly swaging, and fuel plate characterization. Characterization techniques being employed include, Ultrasonic Testing (UT), radiography, and microscopy.

G. A. Moore; J-F Jue; B. H. Rabin; M. J. Nilles

2010-03-01T23:59:59.000Z

225

Wet electrostatic precipitator having removable nested hexagonal collector plates and magnetic aligning and rapping means  

SciTech Connect (OSTI)

A wet electrostatic precipitator including a plurality of removable nested collecting electrodes or plates forming a repeating pattern of hexagonal collecting zones throughout the precipitator. Each collecting plate is formed with a sixty degree bend along two opposing longitudinal edges so as to allow three plates to form a self-nesting Y-shaped intersection point. Six points form a hexagonal collecting zone. The plates are removable thereby expediting replacement. A plurality of strategically placed spray nozzles provide wash fluid to the plates. Magnet sets provide for discharge electrode alignment and rapping.

Young, C.E.; Drzewiecki, G.

1984-04-10T23:59:59.000Z

226

Modal parameters for a flat plate supported by an oil film.  

SciTech Connect (OSTI)

This paper examines the resonant frequencies, Mode shapes, and damping values for a square plate suppcirted by an oil film. Such a study is motivated by interesl: in oil-supported slip tables used for vibration testing. Rtssonant frequencies and percent critical damping were measured for four cases: plate freely suspended; plate with free end conditions and suppoited by an oil film; plate fixed at several locations; and plate fixed at several locations while supported by an oil film. Analytical estimates of the modal properties and modal propertie!j derived from measured data are compared and discrepancies discussed.

Jauhola, A. G. (Andrew G.); Kinzel, E. C. (Edward C.); Reding, D. (Derek); Hunter, N. F. (Norman F.)

2003-01-01T23:59:59.000Z

227

Wave-plate structures, power selective optical filter devices, and optical systems using same  

DOE Patents [OSTI]

In an embodiment, an optical filter device includes an input polarizer for selectively transmitting an input signal. The device includes a wave-plate structure positioned to receive the input signal, which includes first and second substantially zero-order, zero-wave plates arranged in series with and oriented at an angle relative to each other. The first and second zero-wave plates are configured to alter a polarization state of the input signal passing in a manner that depends on the power of the input signal. Each zero-wave plate includes an entry and exit wave plate each having a fast axis, with the fast axes oriented substantially perpendicular to each other. Each entry wave plate is oriented relative to a transmission axis of the input polarizer at a respective angle. An output polarizer is positioned to receive a signal output from the wave-plate structure and selectively transmits the signal based on the polarization state.

Koplow, Jeffrey P. (San Ramon, CA)

2012-07-03T23:59:59.000Z

228

The Light Velocity Casimir Effect Does the Velocity of Light Increase when Propagating Between the Casimir Plates?  

E-Print Network [OSTI]

We propose experiments that might be set up to detect the increase in the velocity of light in a vacuum in the laboratory frame for photons travelling between (and perpendicular to) the Casimir plates in a vacuum. The Casimir plates are two closely spaced, conductive plates, where an attractive force is observed to exist between the plates called the 'Casimir Force'. We propose that the velocity of light in a vacuum increases when propagating between two transparent Casimir Plates. We call this effect the 'Light Velocity Casimir Effect' or LVC effect. The LVC effect happens because the vacuum energy density in between the plates is lower than that outside the Casimir plates. The conductive plates disallow certain frequencies of electrically charged virtual particles to exist inside the plates, thus lowering the inside vacuum particle density, compared to the density outside the plates. The reduced (electrically charged) virtual particle density results in fewer photon scattering events inside the plates, whic...

Ostoma, T; Ostoma, Tom; Trushyk, Mike

1999-01-01T23:59:59.000Z

229

Upper Oceanic Energy Response to Tropical Cyclone Passage JOHN A. KNAFF AND MARK DEMARIA  

E-Print Network [OSTI]

Upper Oceanic Energy Response to Tropical Cyclone Passage JOHN A. KNAFF AND MARK DEMARIA NOAA is investigated using a 6-yr daily record of data-driven analyses of two measures of upper ocean energy content information and the upper ocean response. Upper oceanic energy decreases in these metrics are shown to persist

Schubert, Wayne H.

230

Wave interaction with a fixed vertical flat plate  

E-Print Network [OSTI]

. Hydrofoil definition sketch. The sharp-edged gust problem and the problem of a step-wise cnange in the velocity perpendicular to the foil offers insight into the response of a foil subject to an oscillating fluid. A sharp-edged gust with an initial... forces on a thin flat plate with a standard hydrofoil thickness was determined experimentally in a two-dimensional wave tank. Non-dimensional parameters were plotted and used to evaluate the data. It was shown that lift can be generated on a flat...

Glover, Lanny Bruce

1985-01-01T23:59:59.000Z

231

An experimental study of the vibration of modified cantilever plates  

E-Print Network [OSTI]

wings and larger sweep angles. For complete vibration and flutter anal- ysis of these components it is necessary that the modes and frequencies of natural vibration be closely established. Flat cantilever plates (I). serve as a good analogy... of the wings for vibration study. The wings, however, are not usually true cantilevers but are fastened along two lines. One of these lines is along the skin of the fuselage and the other is along the center line of the craft. JL moment is applied...

Read, James McPherson

1954-01-01T23:59:59.000Z

232

The plate is not available in electronic format  

Office of Legacy Management (LM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment ofof EnergyYou$0.C.Green River,The Secretary of Energy 0,The plate

233

Architecture of the upper Sego Sandstone, Book Cliffs, Utah  

E-Print Network [OSTI]

................................................................................................................... 22 SEDIMENTOLOGY.................................................................................................... 26 Marine Shale with Wavy Sandstones............................................................... 26 Highly... surfaces. The cross-section defines an 8.5 kilometer section that begins in Sego Canyon outside of Thompson Springs, Figure 12-Bedding diagram of major facies transitions with sedimentary logs overlain. SEDIMENTOLOGY Upper Sego Sandstone deposits can...

Birkhead, Stanley Scott

2006-04-12T23:59:59.000Z

234

Upper Snake Provincial Assessment May 2004 6. Participants and Affiliations  

E-Print Network [OSTI]

for the Upper Snake Provincial Assessment Idaho Department of Fish and Game: Gregg Servheen Jon Beals Lance Chad Colter Shoshone-Bannock Tribes Larry Dickerson US Fish and Wildlife Service John Fred Shoshone-Bannock Tribes Jim Fredericks Idaho Fish and Game Dan Garren Idaho Fish and Game Lauri Hanauska-Brown Idaho Fish

235

Simulating Sustainability: Conjunctive Land and Water Management in the Upper  

E-Print Network [OSTI]

Simulating Sustainability: Conjunctive Land and Water Management in the Upper Santa Cruz River Water Issue: Introduction and Context This research project addresses a chronic water management issue in Arizona: management and allocation of water supplies in areas undergoing rapid growth and land use changes

Fay, Noah

236

METHANE SOURCES AND SINKS IN UPPER OCEAN WATERS  

E-Print Network [OSTI]

METHANE SOURCES AND SINKS IN UPPER OCEAN WATERS A DISSERTATION SUBMITTED TO THE GRADUATE DIVISION the distribution of dissolved methane in ocean surface waters were investigated. Water column and sediment trap and Antarctic waters to the oliogotrophic ocean off Hawaii. The methane concentrations in most of the surface

Luther, Douglas S.

237

Transdichotomous algorithms without multiplication some upper and lower bounds  

E-Print Network [OSTI]

Trans­dichotomous algorithms without multiplication ­ some upper and lower bounds Andrej Brodnik 1 that on a RAM with addition, subtraction, bitwise Boolean operations and shifts, but no multiplication; 1g w of w­bit bit strings (or numbers between 0 and 2 w \\Gamma 1). An increasingly popular

Brodnik, Andrej "Andy"

238

Measurement of two-phase flow at the core/upper plenum interface for a PWR geometry under simulated reflood conditions  

SciTech Connect (OSTI)

The Instrument Development Loop (IDL) Program is part of the International 2D/3D Refill and Reflood Experimental and Analytical Research Program. Among the objectives of the International Program are: the study of the steam binding effect during reflood flow distribution (chimney effect) in a heated core; and the study of flow hydrodynamics in the core, downcomer and upper plenum during refill and reflood. Three experimental facilities were used in these studies: a one-bundle air/water loop, a three-bundle air/water loop, and a one-bundle steam/water loop. The loops represent full-scale vertical sections of the UPTF, extending from spray nozzles to the top of the upper plenum and including a short length of dummy fuel rods, upper end boxes, core support plate and control rod guide tubes. Three flow regimes were identified and studied: (1) all liquid down; (2) countercurrent flow in which gas (or vapor) goes up and liquid goes both up and down; and (3) cocurrent flow in which both gas (or vapor) and liquid go up.

Thomas, D.G.; Combs, S.K.

1983-08-01T23:59:59.000Z

239

The thermal Casimir effect for rough metallic plates  

E-Print Network [OSTI]

We propose a new theory of thermal Casimir effect, holding for the experimentally important case of metallic surfaces with a roughness having a spatial scale smaller than the skin depth. The theory is based on a simple phenomenological model for a rough conductor, that explicitly takes account of the fact that ohmic conduction in the immediate vicinity of the surface of a conductor is much impeded by surface roughness, if the amplitude of roughness is smaller than the skin depth. As a result of the new model, we find that surface roughness strongly influences the magnitude of the thermal correction to the Casimir force, independently of the plates separation. Our model, while consistent with recent accurate measurements of the Casimir force in the submicron range, leads to a new prediction for the not yet observed thermal correction to the Casimir force at large plates separation. Besides the thermal Casimir problem, our model is relevant for the correct theoretical interpretation of current experiments probing other proximity effects between conductors, like radiative heat transfer and quantum friction.

G. Bimonte

2007-11-04T23:59:59.000Z

240

Thermodynamics, Structure, and Dynamics of Water Confined between Hydrophobic Plates  

E-Print Network [OSTI]

We perform molecular dynamics simulations of 512 water-like molecules that interact via the TIP5P potential and are confined between two smooth hydrophobic plates that are separated by 1.10 nm. We find that the anomalous thermodynamic properties of water are shifted to lower temperatures relative to the bulk by $\\approx 40$ K. The dynamics and structure of the confined water resemble bulk water at higher temperatures, consistent with the shift of thermodynamic anomalies to lower temperature. Due to this $T$ shift, our confined water simulations (down to $T = 220$ K) do not reach sufficiently low temperature to observe a liquid-liquid phase transition found for bulk water at $T\\approx 215$ K using the TIP5P potential. We find that the different crystalline structures that can form for two different separations of the plates, 0.7 nm and 1.10 nm, have no counterparts in the bulk system, and discuss the relevance to experiments on confined water.

Pradeep Kumar; Sergey V. Buldyrev; Francis W. Starr; Nicolas Giovambattista; H. Eugene Stanley

2005-07-05T23:59:59.000Z

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Waste Minimization Plans and activities in the MFD Plating Shop  

SciTech Connect (OSTI)

The Plating Shop (Building 322), provides processes such as electroplating, electroless plating, anodizing, cleaning, etching, electroforming and chemical milling. We in MFD are committed to an active program on waste minimization, and the purpose of this document is to outline the plan of action. Our short range minimization goals are threefold: (1) Reduce our major waste stream by 90%, (2) Minimize discharge of rinse water to sewer system, and (3) Eliminate vapor degreasing in the shop. The intermediate goals consist of characterizing the waste streams and evaluating recovery processes. To do this, we first need to have the distillation unit operational and time to determine its effectiveness. If it proves to be as effective as we anticipate, we will perhaps purchase a second unit. Regardless, the streams that we can identify include: nickel, copper, rinses, acids, alkalies, electropolish and miscellaneous. Our goal is to utilize electrolytic processes to recover metals such as nickel and copper and processes such as ion exchange for some of the other streams. We intend to evaluate the full gamut of recycling processes available for these streams. We anticipate completing this phase of the minimization program by January 1993. The long range goal is zero discharge or since this could prove extremely difficult, development of processes that will allow us to produce a sludge cake that could be handled by our Hazardous Waste Management Group.

Dini, J.W.; Steffani, C.P.

1991-02-01T23:59:59.000Z

242

Heat Pipe Embedded AlSiC Plates for High Conductivity - Low CTE Heat Spreaders  

SciTech Connect (OSTI)

Heat pipe embedded aluminum silicon carbide (AlSiC) plates are innovative heat spreaders that provide high thermal conductivity and low coefficient of thermal expansion (CTE). Since heat pipes are two phase devices, they demonstrate effective thermal conductivities ranging between 50,000 and 200,000 W/m-K, depending on the heat pipe length. Installing heat pipes into an AlSiC plate dramatically increases the plate’s effective thermal conductivity. AlSiC plates alone have a thermal conductivity of roughly 200 W/m-K and a CTE ranging from 7-12 ppm/ deg C, similar to that of silicon. An equivalent sized heat pipe embedded AlSiC plate has effective thermal conductivity ranging from 400 to 500 W/m-K and retains the CTE of AlSiC.

Johnson, Matthew (DOE/NNSA Kansas City Plant (United States)); Weyant, J.; Garner, S. (Advanced Cooling Technologies, Inc. (Lancaster, PA (United States)); Occhionero, M. (CPS Technologies Corporation, Norton, MA (United States))

2010-01-07T23:59:59.000Z

243

Corrosion-resistant, electrically-conductive plate for use in a fuel cell stack  

DOE Patents [OSTI]

A corrosion resistant, electrically-conductive, durable plate at least partially coated with an anchor coating and a corrosion resistant coating. The corrosion resistant coating made of at least a polymer and a plurality of corrosion resistant particles each having a surface area between about 1-20 m.sup.2/g and a diameter less than about 10 microns. Preferably, the plate is used as a bipolar plate in a proton exchange membrane (PEMFC) fuel cell stack.

Carter, J. David (Bolingbrook, IL); Mawdsley, Jennifer R. (Woodridge, IL); Niyogi, Suhas (Woodridge, IL); Wang, Xiaoping (Naperville, IL); Cruse, Terry (Lisle, IL); Santos, Lilia (Lombard, IL)

2010-04-20T23:59:59.000Z

244

Evaluation of Novel and Low-Cost Materials for Bipolar Plates in PEM Fuel Cells.  

E-Print Network [OSTI]

??Bipolar plate material and fabrication costs make up a significant fraction of the total cost in a polymer electrolyte membrane fuel cell stack. In an… (more)

Desrosiers, Kevin Campbell

2002-01-01T23:59:59.000Z

245

Characteristics of countercurrent vapor-liquid flow at a perforated plate  

E-Print Network [OSTI]

of heat-sens1tive materials. Also, a column with low liqu1d holdup is more responsive to operating controls than 1s a column conta1n- 1ng a large inventory of liquid. It was found that for the plates having hole areas of 23 and 40 per cent... to the plate above by the impetus of the vapor Jetting through the liquid on the plate. In this case, the velocity of the vapor through the holes in the plate, (or slots, in the case of bubble-caps) would be the 38 controlling factor. This mechanism...

Sutherland, Samuel Shelton

2012-06-07T23:59:59.000Z

246

Variables Affecting Smooth Particle Hydrodynamics Simulation of High-Velocity Flyer Plate Impact Experiments  

SciTech Connect (OSTI)

This paper describes our work to characterize the variables affecting the smoothed particle hydrodynamics (SPH) method in the LS-DYNA package for simulating high-velocity flyer plate impact experiments. LS-DYNA simulations are compared with one-dimensional experimental data of an oxygen-free high-conductivity (OFHC) copper flyer plate impacting another plate of the same material. The comparison is made by measuring the velocity of a point on the back surface of the impact plate using the velocity interferometer system for any reflector (VISAR) technique.

Somasundaram, Deepak S [UNLV; Trabia, Mohamed [UNLV; O'Toole, Brendan [UNLV; Hixson, Robert S [NSTec

2014-01-23T23:59:59.000Z

247

E-Print Network 3.0 - auto-catalytic electroless plating Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

electroless plating Page: << < 1 2 3 4 5 > >> 1 Preparation of highly dispersed PEM fuel cell catalysts using electroless deposition methods Summary: (ED). ED is a catalytic...

248

The fabrication of a heterogeneous composite bipolar plate with 3D printing technique.  

E-Print Network [OSTI]

??Bipolar plates used in a PEMFC must have high electric conductivity, good mechanical and chemical stability, low gas permeability, and low cost. For portable applications,… (more)

Jian, Siang-he

2014-01-01T23:59:59.000Z

249

A NEW PEMFC FLOW FIELD PLATE OPTIMIZATION COMPARISON - ANSYS FLUENT FUEL-CELL SIMULATION.  

E-Print Network [OSTI]

??The performance of a new cathode flow field plate located on a PEM fuel cell was compared to an industry standard and optimal serpentine design… (more)

Soueidan, Ahmed Yassin

2012-01-01T23:59:59.000Z

250

An experimental investigation of certain flat plates loaded in torsion with end restraint  

E-Print Network [OSTI]

and deflections of flat plates loaded in torsion are oonsidered. Plates of width-Chiohess ratios of 8, 10, 12 and 14 and length- width ratios of 1, 2 ~ 4 and 6 are used Theoretical and expsrinental stress and defleotion ourves are plottedi Sartloular... require high struotural solidities. Ls a result a flat plate nay be used to sienlate wing struotural problens ~ 1 Theoretioal solutions ~ ~ for the stresses and defleotions of flat plates with torsional loads ellninate the effeots of end restraint by as...

Hamner, Bennett Barron

1953-01-01T23:59:59.000Z

251

Emotions as Heuristics for Rational Agents Bas R. Steunebrink  

E-Print Network [OSTI]

Department of Information and Computing Sciences, Utrecht University Technical Report UU-CS-2007-006 www of Information and Computing Sciences Utrecht University Utrecht, The Netherlands bass@cs.uu.nl Mehdi Dastani Department of Information and Computing Sciences Utrecht University Utrecht, The Netherlands mehdi

Utrecht, Universiteit

252

PS-6 From: Bas,JoAnn L -  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006 TheSteven Ashby Dr. Steven Para buscar

253

Building 9401-2 Plating Shop Surveillance and Maintenance Plan  

SciTech Connect (OSTI)

This document provides a plan for implementing surveillance and maintenance (S and M) activities to ensure that Building 9401-2 Plating Shop is maintained in a cost effective and environmentally secure configuration until subsequent closure during the final disposition phase of decommissioning. U.S. Department of Energy (DOE) G430.1A-2, Surveillance and Maintenance During Facility Disposition (1997), was used as guidance in the development of this plan. The S and M Plan incorporates DOE O 430.1A, Life Cycle Asset Management (LCAM) (1998a) direction to provide for conducting surveillance and maintenance activities required to maintain the facility and remaining hazardous and radioactive materials, wastes, and contamination in a stable and known condition pending facility disposition. Recommendations in the S and M plan have been made that may not be requirement-based but would reduce the cost and frequency of surveillance and maintenance activities. During the course of S and M activities, the facility's condition may change so as to present an immediate or developing hazard or unsatisfactory condition. Corrective action should be coordinated with the appropriate support organizations using the requirements and guidance stated in procedure Y10-202, Rev. 1, Integrated Safety Management Program, (Lockheed Martin Energy Systems, Inc. (LMES), 1998a) implemented at the Oak Ridge Y-12 Plant and the methodology of the Nuclear Operations Conduct of Operations Manual (LMES, 1999) for the Depleted Uranium Operations (DUO) organization. The key S and M objectives applicable to the Plating Shop are to: Ensure adequate containment of remaining residual material in exhaust stacks and outside process piping, stored chemicals awaiting offsite shipment, and items located in the Radioactive Material Area (RMA); Provide access control into the facility and physical safety to S and M personnel; Maintain the facility in a manner that will protect the public, the environment, and the S and M personnel; Provide an S and M plan which identifies and complies with applicable environmental, safety, and health safeguards and security requirements; and Provide a cost effective S and M program for the plating shop, Building 9401-2.

None

1999-05-01T23:59:59.000Z

254

Surface modified stainless steels for PEM fuel cell bipolar plates  

DOE Patents [OSTI]

A nitridation treated stainless steel article (such as a bipolar plate for a proton exchange membrane fuel cell) having lower interfacial contact electrical resistance and better corrosion resistance than an untreated stainless steel article is disclosed. The treated stainless steel article has a surface layer including nitrogen-modified chromium-base oxide and precipitates of chromium nitride formed during nitridation wherein oxygen is present in the surface layer at a greater concentration than nitrogen. The surface layer may further include precipitates of titanium nitride and/or aluminum oxide. The surface layer in the treated article is chemically heterogeneous surface rather than a uniform or semi-uniform surface layer exclusively rich in chromium, titanium or aluminum. The precipitates of titanium nitride and/or aluminum oxide are formed by the nitriding treatment wherein titanium and/or aluminum in the stainless steel are segregated to the surface layer in forms that exhibit a low contact resistance and good corrosion resistance.

Brady, Michael P [Oak Ridge, TN; Wang, Heli [Littleton, CO; Turner, John A [Littleton, CO

2007-07-24T23:59:59.000Z

255

System Advisor Model: Flat Plate Photovoltaic Performance Modeling Validation Report  

SciTech Connect (OSTI)

The System Advisor Model (SAM) is a free software tool that performs detailed analysis of both system performance and system financing for a variety of renewable energy technologies. This report provides detailed validation of the SAM flat plate photovoltaic performance model by comparing SAM-modeled PV system generation data to actual measured production data for nine PV systems ranging from 75 kW to greater than 25 MW in size. The results show strong agreement between SAM predictions and field data, with annualized prediction error below 3% for all fixed tilt cases and below 8% for all one axis tracked cases. The analysis concludes that snow cover and system outages are the primary sources of disagreement, and other deviations resulting from seasonal biases in the irradiation models and one axis tracking issues are discussed in detail.

Freeman, J.; Whitmore, J.; Kaffine, L.; Blair, N.; Dobos, A. P.

2013-12-01T23:59:59.000Z

256

Optimal control of plate shape with incompatible strain fields  

E-Print Network [OSTI]

A flat plate can bend into a curved surface if it experiences an inhomogeneous growth field. In this article a method is described that numerically determines the optimal growth field giving rise to an arbitrary target shape, optimizing for closeness to the target shape and for growth field smoothness. Numerical solutions are presented, for the full non-symmetric case as well as for simplified one-dimensional and axisymmetric geometries. This system can also be solved semi-analytically by positing an ansatz for the deformation and growth fields in a circular disk with given thickness profile. Paraboloidal, cylindrical and saddle-shaped target shapes are presented as examples, of which the last two exemplify a soft mode arising from a non-axisymmetric deformation of a structure with axisymmetric material properties.

Gareth Wyn Jones; L. Mahadevan

2014-12-22T23:59:59.000Z

257

Development of Glass Resistive Plate Chambers for INO  

E-Print Network [OSTI]

The India-based Neutrino Observatory (INO) collaboration is planning to build a massive 50kton magnetised Iron Calorimeter (ICAL) detector, to study atmospheric neutrinos and to make precision measurements of the parameters related to neutrino oscillations. Glass Resistive Plate Chambers (RPCs) of about 2m X 2m in size are going to be used as active elements for the ICAL detector. We have fabricated a large number of glass RPC prototypes of 1m X 1m in size and have studied their performance and long term stability. In the process, we have developed and produced a number of materials and components required for fabrication of RPCs. We have also designed and optimised a number of fabrication and quality control procedures for assembling the gas gaps. In this paper we will review our activities towards development of glass RPCs for the INO ICAL detector and will present results of the characterisation studies of the RPCs.

Satyanarayana Bheesette; for the INO collaboration

2008-10-26T23:59:59.000Z

258

Study of electroless nickel plating of ceramic particles  

SciTech Connect (OSTI)

In the production of aluminum-based metal matrix composites (MMC), the wettability of the reinforcement particulates by the matrix is an important factor. The manufacture of MMC reinforced with alumina particles require the use of specialized fabrication techniques such as rheocasting in order to achieve effective particle incorporation. Several surface treatments have been applied to alumina and other reinforcement particulates in order to modify particle wettability. The aim of this study was to investigate the deposition of Ni-P onto several ceramic particulate surfaces without the use of the conventional sensitization and activation steps. This nickel plating treatment, had the potential to improve the incorporation of alumina particles in aluminum melts, with respect to MMC formation by the plasma transferred arc (PTA) surfacing process.

Deuis, R.L.; Subramanian, C.; Strafford, K.N.; Arora, P. [Univ. of South Australia (Australia)] [Univ. of South Australia (Australia); Yellup, J.M. [CSIRO, Woodville North, South Australia (Australia). Div. of Manufacturing Technology] [CSIRO, Woodville North, South Australia (Australia). Div. of Manufacturing Technology

1995-10-15T23:59:59.000Z

259

Phase plate technology for laser marking of magnetic discs  

DOE Patents [OSTI]

An advanced design for a phase plate enables the distribution of spots in arbitrarily shaped patterns with very high uniformity and with a continuously or near-continuously varying phase pattern. A continuous phase pattern eliminates large phase jumps typically expected in a grating that provides arbitrary shapes. Large phase jumps increase scattered light outside of the desired pattern, reduce efficiency and can make the grating difficult to manufacture. When manufacturing capabilities preclude producing a fully continuous grating, the present design can be easily adapted to minimize manufacturing errors and maintain high efficiencies. This continuous grating is significantly more efficient than previously described Dammann gratings, offers much more flexibility in generating spot patterns and is easier to manufacture and replicate than a multi-level phase grating. 3 figs.

Neuman, B.; Honig, J.; Hackel, L.; Dane, C.B.; Dixit, S.

1998-10-27T23:59:59.000Z

260

Current conducting end plate of fuel cell assembly  

DOE Patents [OSTI]

A fuel cell assembly has a current conducting end plate with a conductive body formed integrally with isolating material. The conductive body has a first surface, a second surface opposite the first surface, and an electrical connector. The first surface has an exposed portion for conducting current between a working section of the fuel cell assembly and the electrical connector. The isolating material is positioned on at least a portion of the second surface. The conductive body can have support passage(s) extending therethrough for receiving structural member(s) of the fuel cell assembly. Isolating material can electrically isolate the conductive body from the structural member(s). The conductive body can have service passage(s) extending therethrough for servicing one or more fluids for the fuel cell assembly. Isolating material can chemically isolate the one or more fluids from the conductive body. The isolating material can also electrically isolate the conductive body from the one or more fluids.

Walsh, Michael M. (Fairfield, CT)

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Oscillation modes of dc microdischarges with parallel-plate geometry  

E-Print Network [OSTI]

Two different oscillation modes in microdischarge with parallel-plate geometry has been observed: relaxation oscillations with frequency range between 1.23 and 2.1 kHz and free-running oscillations with 7 kHz frequency. The oscillation modes are induced by increasing power supply voltage or discharge current. For a given power supply voltage, there is a spontaneous transition from one to other oscillation mode and vice versa. Before the transition from relaxation to free-running oscillations, the spontaneous increase of oscillation frequency of relaxation oscillations form 1.3 kHz to 2.1 kHz is measured. Fourier Transform Spectra of relaxation oscillations reveal chaotic behaviour of microdischarge. Volt-Ampere characteristics associated with relaxation oscillations describes periodical transition between low current, diffuse discharge and normal glow. However, free-running oscillations appear in subnormal glow only.

Stefanovi?, Ilija; Škoro, Nikola; Mari?, Dragana; Petrovi?, Zoran Lj; Winter, Jörg

2011-01-01T23:59:59.000Z

262

Drying studies for corroded DOE aluminum plate fuels  

SciTech Connect (OSTI)

The Idaho National Engineering Laboratory (INEL) currently stores a wide variety of spent nuclear fuel. The fuel was originally intended to be stored underwater for a short period of thermal cooling, then removed and reprocessed. However, it has been stored underwater for much longer thank originally anticipated. During this time dust and airborne desert soil have entered the oldest INEL pool, accumulating on the fuel. Also, the aluminum fuel cladding has corroded compromising the exposed surfaces of the fuel. Plans are now underway to move some the the more vulnerable aluminum plate type fuels into dry storage in an existing vented and filtered fuel storage facility. In preparation for dry storage of the fuel a drying and canning station is being built at the INEL. The two primary objectives of this facility are to determine the influence of corrosion products on the drying process and to establish temperature distribution inside the canister during heating.

Lords, R.E.; Windes, W.E. [Idaho National Engineering Lab., Idaho Falls, ID (United States); Crepeau, J.C.; Sidwell, R.W. [Idaho Univ., Idaho Falls, ID (United States) Dept. of Mechanical Engineering

1996-05-01T23:59:59.000Z

263

Phase plate technology for laser marking of magnetic discs  

DOE Patents [OSTI]

An advanced design for a phase plate enables the distribution of spots in arbitrarily shaped patterns with very high uniformity and with a continuously or near-continuously varying phase pattern. A continuous phase pattern eliminates large phase jumps typically expected in a grating that provides arbitrary shapes. Large phase jumps increase scattered light outside of the desired pattern, reduce efficiency and can make the grating difficult to manufacture. When manufacturing capabilities preclude producing a fully continuous grating, the present design can be easily adapted to minimize manufacturing errors and maintain high efficiencies. This continuous grating is significantly more efficient than previously described Dammann gratings, offers much more flexibility in generating spot patterns and is easier to manufacture and replicate than a multi-level phase grating.

Neuman, Bill (Livermore, CA); Honig, John (Livermore, CA); Hackel, Lloyd (Livermore, CA); Dane, C. Brent (Livermore, CA); Dixit, Shamasundar (Livermore, CA)

1998-01-01T23:59:59.000Z

264

Collimator application for microchannel plate image intensifier resolution improvement  

DOE Patents [OSTI]

A collimator is included in a microchannel plate image intensifier (MCPI). Collimators can be useful in improving resolution of MCPIs by eliminating the scattered electron problem and by limiting the transverse energy of electrons reaching the screen. Due to its optical absorption, a collimator will also increase the extinction ratio of an intensifier by approximately an order of magnitude. Additionally, the smooth surface of the collimator will permit a higher focusing field to be employed in the MCP-to-collimator region than is currently permitted in the MCP-to-screen region by the relatively rough and fragile aluminum layer covering the screen. Coating the MCP and collimator surfaces with aluminum oxide appears to permit additional significant increases in the field strength, resulting in better resolution.

Thomas, Stanley W. (Livermore, CA)

1996-02-27T23:59:59.000Z

265

Sensor network based vehicle classification and license plate identification system  

SciTech Connect (OSTI)

Typically, for energy efficiency and scalability purposes, sensor networks have been used in the context of environmental and traffic monitoring applications in which operations at the sensor level are not computationally intensive. But increasingly, sensor network applications require data and compute intensive sensors such video cameras and microphones. In this paper, we describe the design and implementation of two such systems: a vehicle classifier based on acoustic signals and a license plate identification system using a camera. The systems are implemented in an energy-efficient manner to the extent possible using commercially available hardware, the Mica motes and the Stargate platform. Our experience in designing these systems leads us to consider an alternate more flexible, modular, low-power mote architecture that uses a combination of FPGAs, specialized embedded processing units and sensor data acquisition systems.

Frigo, Janette Rose [Los Alamos National Laboratory; Brennan, Sean M [Los Alamos National Laboratory; Rosten, Edward J [Los Alamos National Laboratory; Raby, Eric Y [Los Alamos National Laboratory; Kulathumani, Vinod K [WEST VIRGINIA UNIV.

2009-01-01T23:59:59.000Z

266

Collimator application for microchannel plate image intensifier resolution improvement  

DOE Patents [OSTI]

A collimator is included in a microchannel plate image intensifier (MCPI). Collimators can be useful in improving resolution of MCPIs by eliminating the scattered electron problem and by limiting the transverse energy of electrons reaching the screen. Due to its optical absorption, a collimator will also increase the extinction ratio of an intensifier by approximately an order of magnitude. Additionally, the smooth surface of the collimator will permit a higher focusing field to be employed in the MCP-to-collimator region than is currently permitted in the MCP-to-screen region by the relatively rough and fragile aluminum layer covering the screen. Coating the MCP and collimator surfaces with aluminum oxide appears to permit additional significant increases in the field strength, resulting in better resolution. 2 figs.

Thomas, S.W.

1996-02-27T23:59:59.000Z

267

Modeling pore corrosion in normally open gold- plated copper connectors.  

SciTech Connect (OSTI)

The goal of this study is to model the electrical response of gold plated copper electrical contacts exposed to a mixed flowing gas stream consisting of air containing 10 ppb H{sub 2}S at 30 C and a relative humidity of 70%. This environment accelerates the attack normally observed in a light industrial environment (essentially a simplified version of the Battelle Class 2 environment). Corrosion rates were quantified by measuring the corrosion site density, size distribution, and the macroscopic electrical resistance of the aged surface as a function of exposure time. A pore corrosion numerical model was used to predict both the growth of copper sulfide corrosion product which blooms through defects in the gold layer and the resulting electrical contact resistance of the aged surface. Assumptions about the distribution of defects in the noble metal plating and the mechanism for how corrosion blooms affect electrical contact resistance were needed to complete the numerical model. Comparisons are made to the experimentally observed number density of corrosion sites, the size distribution of corrosion product blooms, and the cumulative probability distribution of the electrical contact resistance. Experimentally, the bloom site density increases as a function of time, whereas the bloom size distribution remains relatively independent of time. These two effects are included in the numerical model by adding a corrosion initiation probability proportional to the surface area along with a probability for bloom-growth extinction proportional to the corrosion product bloom volume. The cumulative probability distribution of electrical resistance becomes skewed as exposure time increases. While the electrical contact resistance increases as a function of time for a fraction of the bloom population, the median value remains relatively unchanged. In order to model this behavior, the resistance calculated for large blooms has been weighted more heavily.

Battaile, Corbett Chandler; Moffat, Harry K.; Sun, Amy Cha-Tien; Enos, David George; Serna, Lysle M.; Sorensen, Neil Robert

2008-09-01T23:59:59.000Z

268

EIS-0408: Upper Great Plains Wind Energy Programmatic EIS  

Broader source: Energy.gov [DOE]

This EIS, being prepared jointly by DOE's Western Area Power Administration and the Department of the Interior’s Fish and Wildlife Service, will evaluate the environmental impacts of wind energy development in Iowa, Minnesota, Montana, Nebraska, North Dakota, and South Dakota – Western’s Upper Great Plains customer service region. Western will use the EIS to implement a comprehensive regional program to manage interconnection requests for wind energy projects.

269

High upper critical field in disordered niobium nitride superconductor  

SciTech Connect (OSTI)

Superconducting Niobium Nitride thin films have been deposited on glass, aluminum nitride buffered glass, and oxidized silicon substrates by reactive DC magnetron sputtering at ambient substrate temperatures. The crystal structure of these thin films has been determined to be cubic fcc B1 structure by Glancing Incidence X-Ray Diffraction analysis. The superconducting transition temperatures of the thin films were measured to be greater than 11.6?K with a maximum of 13.4?K. The negative temperature coefficient of resistance observed in these thin films indicates the presence of disorder. Magneto-resistance measurements have been carried out on these thin films patterned into standard four probe geometry upto a maximum magnetic field of 12?T for two films and upto 15?T for the other two films. The dependence of transition temperature on the applied field is analyzed to estimate the upper critical field. The upper critical field for most of the films was estimated to exceed 35?T, while one of the most disordered films had an estimated upper critical field greater than 70?T.

Baskaran, R., E-mail: baskaran@igcar.gov.in; Thanikai Arasu, A. V.; Amaladass, E. P.; Janawadkar, M. P. [Materials Science Group, IGCAR, Kalpakkam-603102 (India)

2014-10-28T23:59:59.000Z

270

EVALUATION OF U10MO FUEL PLATE IRRADIATION BEHAVIOR VIA NUMERICAL AND EXPERIMENTAL BENCHMARKING  

SciTech Connect (OSTI)

This article analyzes dimensional changes due to irradiation of monolithic plate-type nuclear fuel and compares results with finite element analysis of the plates during fabrication and irradiation. Monolithic fuel plates tested in the Advanced Test Reactor (ATR) at Idaho National Lab (INL) are being used to benchmark proposed fuel performance for several high power research reactors. Post-irradiation metallographic images of plates sectioned at the midpoint were analyzed to determine dimensional changes of the fuel and the cladding response. A constitutive model of the fabrication process and irradiation behavior of the tested plates was developed using the general purpose commercial finite element analysis package, Abaqus. Using calculated burn-up profiles of irradiated plates to model the power distribution and including irradiation behaviors such as swelling and irradiation enhanced creep, model simulations allow analysis of plate parameters that are either impossible or infeasible in an experimental setting. The development and progression of fabrication induced stress concentrations at the plate edges was of primary interest, as these locations have a unique stress profile during irradiation. Additionally, comparison between 2D and 3D models was performed to optimize analysis methodology. In particular, the ability of 2D and 3D models account for out of plane stresses which result in 3-dimensional creep behavior that is a product of these components. Results show that assumptions made in 2D models for the out-of-plane stresses and strains cannot capture the 3-dimensional physics accurately and thus 2D approximations are not computationally accurate. Stress-strain fields are dependent on plate geometry and irradiation conditions, thus, if stress based criteria is used to predict plate behavior (as opposed to material impurities, fine micro-structural defects, or sharp power gradients), unique 3D finite element formulation for each plate is required.

Samuel J. Miller; Hakan Ozaltun

2012-11-01T23:59:59.000Z

271

Plasma-accelerated flyer-plates for equation of state studies  

SciTech Connect (OSTI)

We report on a new technique to accelerate flyer-plates to high velocities ({approx}5 km/s). In this work, a strong shock is created through direct laser ablation of a thin polyimide foil. Subsequent shock breakout of that foil results in the generation of a plasma characterized by a smoothly increasing density gradient and a strong forward momentum. Stagnation of this plasma onto an aluminum foil and the resultant momentum transfer accelerates a thin aluminum flyer-plate. The aluminum flyer-plate is then accelerated to a peak velocity of {approx}5 km/s before impact with a transparent lithium fluoride (LiF) window. Simulations of the stagnating plasma ramp compression and wave reverberations within the flyer-plate suggest that the temperature at the flyer-plate impact surface is elevated by less than 50 Degree-Sign C. Optical velocimetry is used to measure the flyer-plate velocity and impact conditions enabling the shocked refractive index of LiF to be determined. The results presented here are in agreement with conventional flyer-plate measurements validating the use of plasma-accelerated flyer-plates for equation of state and impact studies.

Fratanduono, D. E.; Smith, R. F.; Eggert, J. H.; Braun, D. G.; Collins, G. W. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Boehly, T. R. [Laboratory for Laser Energetic, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)

2012-07-15T23:59:59.000Z

272

Plate interaction in the NE Caribbean subduction zone from continuous GPS observations  

E-Print Network [OSTI]

Plate interaction in the NE Caribbean subduction zone from continuous GPS observations Uri S. ten sites on NE Caribbean islands to evaluate strain accumulation along the North American (NA) ­ Caribbean-Venegas (2012), Plate interaction in the NE Caribbean subduction zone from continuous GPS observations, Geophys

ten Brink, Uri S.

273

DESIGN OPTIMIZATION OF HIGH-PERFORMANCE HELIUM-COOLED DIVERTOR PLATE CONCEPT  

E-Print Network [OSTI]

DESIGN OPTIMIZATION OF HIGH-PERFORMANCE HELIUM-COOLED DIVERTOR PLATE CONCEPT X.R. Wanga , S Consulting, Fliederweg 3, 76351 Linkenheim, Germany A helium-cooled plate-type divertor design concept has of the concept in the high heat flux zone. This paper describes the design optimization of the helium

Raffray, A. René

274

Experimental estimations of viscoelastic properties of multilayer damped plates in broad-band frequency range  

E-Print Network [OSTI]

lightweighting structures for aeronautics, automotive or construction applications, the level of performance's modulus) of "polyethylene thermoplastic / aluminum" bilayer plates. The thermoplastic is chosen for its and manufacture Each plate is constituted of a first layer in aluminum (of thickness 2mm), on which a second layer

Paris-Sud XI, Université de

275

Electrically switchable phase-type fractal zone plates and fractal photon sieves  

E-Print Network [OSTI]

@psu.edu (T. J. H.); exwsun@ntu.edu.sg (X. W. S.) Abstract: Electrically switchable phase-type fractal zoneElectrically switchable phase-type fractal zone plates and fractal photon sieves Yan Jun Liu,1 Hai­1323 (2004). 9. H. T. Dai, J. H. Liu, X. C. Sun, and D. J. Yin, "Programmable fractal zone plates (Fra

276

The Effects of pH Variation on Whisker Growth on Tin Plated Copper  

E-Print Network [OSTI]

The Effects of pH Variation on Whisker Growth on Tin Plated Copper Jeffrey Wu Advisors: Uttara Engineering Introduction: Field Failure Caused by Tin Whisker Short 20 YEARS Whiskers Growing Inside://nepp.nasa.gov/whisker/photos/pom/index.htm) Tin is an element commonly desired to plate on electrical components because of it's corrosion

Collins, Gary S.

277

Hydroelastic analysis of the floating plate optimized for maximum radiation damping  

E-Print Network [OSTI]

Hydroelastic analysis of the floating plate optimized for maximum radiation damping Christopher J t In previous work, the problem of optimizing the shape of a thin floating plate to maximize radiation damping, incompressible ocean of infinite extent. For simplicity, only rigid heave motions were considered and the damping

Damaren, Christopher J.

278

FLAT PLATE HEAT PIPES: FROM OBSERVATIONS TO THE MODELING OF THE CAPILLARY STUCTURE  

E-Print Network [OSTI]

1 FLAT PLATE HEAT PIPES: FROM OBSERVATIONS TO THE MODELING OF THE CAPILLARY STUCTURE Frédéric ABSTRACT This paper presents a synthesis of observations made inside six different flat plate heat pipes to estimate the performance of the heat pipe in a real application with several electronic components

Paris-Sud XI, Université de

279

CORRELATING EVAPORATION HEAT TRANSFER COEFFICIENT OF REFRIGERANT R-134a IN A PLATE HEAT EXCHANGER  

E-Print Network [OSTI]

1 CORRELATING EVAPORATION HEAT TRANSFER COEFFICIENT OF REFRIGERANT R-134a IN A PLATE HEAT EXCHANGER for evaporation heat transfer coefficient of refrigerant R-134a flowing in a plate heat exchanger. Correlation schemes proposed by Yan and Lin (1999b) for modeling the heat transfer coefficient in both a single- phase

Kandlikar, Satish

280

Surface plasmons of a graphene parallel plate waveguide bounded by Kerr-type nonlinear media  

E-Print Network [OSTI]

Surface plasmons of a graphene parallel plate waveguide bounded by Kerr-type nonlinear media H by a graphene parallel plate waveguide (PPWG), surrounded on one or both sides by Kerr-type nonlinear media unchanged, as compared to those of a typical graphene PPWG. Moreover, PL and LL of the SPs are considerably

Leung, Pui-Tak "Peter"

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Free Vibration Analysis of Kirchoff Plates with Damaged Boundaries by the Chebyshev Collocation Method  

E-Print Network [OSTI]

Free Vibration Analysis of Kirchoff Plates with Damaged Boundaries by the Chebyshev Collocation for the free vibration analysis of slender Kirchoff plates with both mixed and damaged boundaries an important role in applications of mechanical, aerospace and civil engineering. Studying the free vibration

Butcher, Eric A.

282

Earth Planets Space, 62, 495502, 2010 Philippine Sea Plate motion since the Eocene estimated from paleomagnetism  

E-Print Network [OSTI]

-Izu-Ogasawara (Bonin)-Mariana (IBM) Arc into the Kyushu-Palau Ridge and the present IBM Arc. The Mariana Trough started in the northern part of the PHS Plate west of the Kyushu-Palau Ridge. The history of PHS Plate motion is not yet

Yamazaki, Toshitsugu

283

Increased Hot-Plate Ignition Probability for Nanoparticle-Laden Diesel Fuel  

E-Print Network [OSTI]

Increased Hot-Plate Ignition Probability for Nanoparticle-Laden Diesel Fuel Himanshu Tyagi, Patrick April 2, 2008 ABSTRACT The present study attempts to improve the ignition properties of diesel fuel, droplet ignition experiments were carried out atop a heated hot plate. Different types of fuel mixtures

Pacheco, Jose Rafael

284

Experimental investigation of response of monolithic and bilayer plates to impulsive loads  

E-Print Network [OSTI]

their blast resistance. We have examined the effectiveness of this approach, focusing on the question) or on the back face of the steel plate would provide a more effective blast mitigating composite of the plate, it may actually enhance the destructive effect of the blast, promoting (rather than mitigating

Nemat-Nasser, Sia

285

Mesoscale Self-Assembly of Hexagonal Plates Using Lateral Capillary Forces: Synthesis Using the "Capillary Bond"  

E-Print Network [OSTI]

Mesoscale Self-Assembly of Hexagonal Plates Using Lateral Capillary Forces: Synthesis Using examines self-assembly in a quasi-two-dimensional, mesoscale system. The system studied here involves and hydrophilic faces on the hexagonal plates led to three outcomes: (i) the extension of the strategies of self-assembly

Prentiss, Mara

286

A METHOD FOR IMAGING CORROSION DAMAGE IN THIN PLATES FROM ELECTROSTATIC DATA  

E-Print Network [OSTI]

A METHOD FOR IMAGING CORROSION DAMAGE IN THIN PLATES FROM ELECTROSTATIC DATA Peter G. Kaup 1 nondestructive evaluation of corrosion in plates is considered. The inpection method uses boundary measurements of currents and voltages to determine the material loss caused by corrosion. The development of the method

Santosa, Fadil

287

FREQUENCY DOMAIN INSTANTANEOUS WAVENUMBER ESTIMATION FOR DAMAGE QUANTIFICATION IN LAYERED PLATE STRUCTURES  

E-Print Network [OSTI]

FREQUENCY DOMAIN INSTANTANEOUS WAVENUMBER ESTIMATION FOR DAMAGE QUANTIFICATION IN LAYERED PLATE, US 3 G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA of promising techniques for the identification and the characterization of damage in plate structures. Among

Boyer, Edmond

288

SPERT Destructive Test - I on Aluminum, Highly Enriched Plate Type Core  

ScienceCinema (OSTI)

SPERT - Special Power Excursion Reactor Tests Destructive Test number 1 On Aluminum, Highly Enriched Plate Type Core. A test studying the behavior of the reactor under destructive conditions on a light water moderated pool-type reactor with a plate-type core.

None

2014-05-07T23:59:59.000Z

289

PROPAGATION OF A-WAVE IN A PLANE PLATE EXPERIMENTAL STUDY  

E-Print Network [OSTI]

PROPAGATION OF A-WAVE IN A PLANE PLATE EXPERIMENTAL STUDY Loïc MARTINEZ Jean DUCLOS Alain TINEL ABSTRACT The propagation of the A-wave is investigated theoretically on a plane brass plate completly a wide development over these ten last years. These studies show that an incident plane wave propagating

Paris-Sud XI, Université de

290

Late Cenozoic partitioning of oblique plate convergence in the Zagros fold-and-thrust belt (Iran)  

E-Print Network [OSTI]

Late Cenozoic partitioning of oblique plate convergence in the Zagros fold-and-thrust belt (Iran of oblique plate convergence in the Zagros fold-and-thrust belt (Iran), Tectonics, 25, TC3002, doi:10.1029/2005TC001860. 1. Introduction [2] The Zagros fold-and-thrust belt of southern Iran, the longest

Paris-Sud XI, Université de

291

Peel and Shear Fracture Characterization of Debonding in FRP Plated Concrete Affected by Moisture  

E-Print Network [OSTI]

polymer CFRP plated concrete systems by mechanically testing accelerated moisture conditioned mesoscalePeel and Shear Fracture Characterization of Debonding in FRP Plated Concrete Affected by Moisture fracture toughness as the quantification parameter of the CFRP-epoxy-concrete trilayer system, which

Entekhabi, Dara

292

Light-scattering properties of plate and column ice crystals generated in a laboratory cold chamber  

E-Print Network [OSTI]

with a diode laser beam. This cloud chamber produces distinct plate and hollow column ice crystal types. The cloud chamber developed at the Desert Re- search Institute has been used to produce ice clouds composedLight-scattering properties of plate and column ice crystals generated in a laboratory cold chamber

Liou, K. N.

293

Horizontal subduction and truncation of the Cocos Plate beneath central Mexico  

E-Print Network [OSTI]

Horizontal subduction and truncation of the Cocos Plate beneath central Mexico Xyoli Pe from a trans-Mexico temporary broadband seismic network centered on Mexico City, we report that the subducting Cocos Plate beneath central Mexico is horizontal, and tectonically underplates the base

Clayton, Robert W.

294

THE FALLACY OF UPPER SNAKE FLOW AUGMENTATION THERE IS NO NEED TO DRAIN IDAHO FOR SALMON  

E-Print Network [OSTI]

APPENDIX 1 THE FALLACY OF UPPER SNAKE FLOW AUGMENTATION THERE IS NO NEED TO DRAIN IDAHO FOR SALMON.......................................................................................................................... 7 Historical Stream Flow Records........................................................................................................ 13 Fish Survival and Upper Snake Flow Augmentation

295

Cognitive Issues in Upper-Division Electricity & Magnetism Steven J. Pollock  

E-Print Network [OSTI]

interventions ­at the upper division. Keywords: physics education research, course reform, electricityCognitive Issues in Upper-Division Electricity & Magnetism Steven J. Pollock and Stephanie V. Chasteen* * Science Education Initiative, University of Colorado, Boulder, CO 80309, USA Department

Colorado at Boulder, University of

296

E-Print Network 3.0 - amputated upper limb Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

daily tasks 7-9. Currently, rotation of upper-limb prostheses... of a small permanent magnet into the distal residual bone of an upper-limb amputee 9. The magnet...

297

Simultaneous laser cutting and welding of metal foil to edge of a plate  

DOE Patents [OSTI]

A method of welding an ultra-thin foil to the edge of a thicker sheet to form a vacuum insulation panel comprising the steps of providing an ultra-thin foil having a thickness less than 0.002, providing a top plate having an edge and a bottom plate having an edge, clamping the foil to the edge of the plate wherein the clamps act as heat sinks to distribute heat through the foil, providing a laser, moving the laser relative to the foil and the plate edges to form overlapping weld beads to weld the foil to the plate edges while simultaneously cutting the foil along the weld line formed by the overlapping beads.

Pernicka, John C. (Fort Collins, CO); Benson, David K. (Golden, CO); Tracy, C. Edwin (Golden, CO)

1996-01-01T23:59:59.000Z

298

Simultaneous laser cutting and welding of metal foil to edge of a plate  

DOE Patents [OSTI]

A method is described for welding an ultra-thin foil to the edge of a thicker sheet to form a vacuum insulation panel comprising the steps of providing an ultra-thin foil having a thickness less than 0.002, providing a top plate having an edge and a bottom plate having an edge, clamping the foil to the edge of the plate wherein the clamps act as heat sinks to distribute heat through the foil, providing a laser, moving the laser relative to the foil and the plate edges to form overlapping weld beads to weld the foil to the plate edges while simultaneously cutting the foil along the weld line formed by the overlapping beads. 7 figs.

Pernicka, J.C.; Benson, D.K.; Tracy, C.E.

1996-03-19T23:59:59.000Z

299

Horizontal Plate Plate  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Metadata also available as Metadata: IdentificationInformation DataQualityInformation SpatialDataOrganizationInformation SpatialReferenceInformation EntityandAttributeI...

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Horizontal Plate Plate  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas inPortalAll NERSC userNewhigh

302

Upper Adjoints for Fast Interprocedural Variable Markus MullerOlm 1 and Helmut Seidl 2  

E-Print Network [OSTI]

Upper Adjoints for Fast Inter­procedural Variable Equalities Markus MË?uller­Olm 1 and Helmut Seidl

Müller-Olm, Markus

303

SECTION 34 Table of Contents 34 Upper Columbia Management Plan..............................................................2  

E-Print Network [OSTI]

and formation of the Subbasin Work Teams and the process used to develop and adopt the management plan can34-1 SECTION 34 ­ Table of Contents 34 Upper Columbia Management Plan .........................................................................25 #12;34-2 34 Upper Columbia Management Plan The Upper Columbia Subbasin Management Plan

304

Upper Digestive Disorders Approved by the UHS Patient Education Committee 02/2012  

E-Print Network [OSTI]

Upper Digestive Disorders Approved by the UHS Patient Education Committee 02/2012 Revised 02/08/12 Page 1 of 2 Upper Digestive Tract Anatomy Esophagus: A long muscular tube in the chest area occurs in the duodenum. Upper Digestive Disorders Reflux with Esophagitis: The flowing back (or reflux

Yener, Aylin

305

Penetration of solar radiation in the upper ocean: A numerical model for oceanic and coastal waters  

E-Print Network [OSTI]

Penetration of solar radiation in the upper ocean: A numerical model for oceanic and coastal waters in the upper ocean, the vertical distribution of solar radiation (ESR) in the shortwave domain plays (2005), Penetration of solar radiation in the upper ocean: A numerical model for oceanic and coastal

Lee, Zhongping

306

Mima mound grasslands of the upper coastal prairie of Texas  

E-Print Network [OSTI]

21 28 31 34 44 47 49 52 55 57 71 74 76 79 87 94 LlST OF TABLES Table Physical and chemical soil characteristics for topographic variations within 3 soil complexes of the upper Coastal Prairie, Texas Page 27 Average absolute... ~ ' ~ ~ ~ ~ ~ O O 8 z z O V) CO iU CC LU O D IZ 31 The landscape had less slope than on Aris-like stands. Intermounds on Crowley/Edna-like soils appear nearly level. Results of physical and chemical analysis were very similar to Aris-like soils...

Butler, Arlene Camille

1979-01-01T23:59:59.000Z

307

Biostratigraphy of the upper cretaceous Austin Group, Travis County, Texas  

E-Print Network [OSTI]

Formation is on the San Gabriel River at the Jonah-Hutto roadcrossing in Williamson County. At the type locality, the upper 35 feet of the Jonah is exposed; the lower 50 feet is exposed two-thirds of a mile upstream. 1he Jonah Formation ranges fr om 120... Forma- tion at Vinson Creek is 25 feet thick and the limestone beds are skeletal packstones. The thinning of the Jonah Formation is caused by the positive influence of the San Marcos Arch during deposition. 20 The contact between the Jonah Formation...

Harris, William Maurice

1982-01-01T23:59:59.000Z

308

Upper limits on charm-changing neutral-current interactions  

E-Print Network [OSTI]

parallel decays can be computed with NII =N„e(l+l )8(c l X), where N„ is the number of cc events, e(1+I ) is the detection efficiency for parallel decays, and 8(c l X) is the average semileptonic branching ratio of the charmed hadrons in the continuum...VOLUME 60, NUMBER 16 PHYSICAL REVIEW LETTERS 18 APRIL 1988 Upper Limits on Charm-Changing Neutral-Current Interactions P. Haas, ' M. Hempstead, ' T. Jensen, ' D. R. Johnson, ' H. Kagan, ' R. Kass, ' P. Baringer, R. L. McIlwain, D. H. Miller, C. R...

Baringer, Philip S.

1988-04-18T23:59:59.000Z

309

Alcator C-Mod Upper Divertor Cryopump Quarterly Progress Report  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICE OF RESEARCH ANDCONTACTS GeorgeLand8 ResearchUpper Divertor

310

Numerical model of mixed convection heat transfer between a series of vertical parallel plates with planar heat sources  

E-Print Network [OSTI]

Heat transfer between a series of vertical parallel plates with planar heat sources has been studied numerically. The series of plates formed a series of channels, or cooling passages, in which fluid could flow. Heat dissipation from the heat...

Watson, James Christopher

2012-06-07T23:59:59.000Z

311

Dynamical thickening transition in plate coating with concentrated surfactant solutions  

E-Print Network [OSTI]

We present a large range of experimental data concerning the influence of surfactants on the well-known Landau-Levich-Derjaguin experiment where a liquid film is generated by pulling a solid plate out of a bath. The thickness h of the film was measured as a function of the pulling velocity V for different kind of surfactant and at various concentrations. Measuring the thickening factor $\\alpha=h/h_{LLD}$, where hLLD is obtained for a pure liquid, in a wide range of capillary ($Ca=\\eta V/\\gamma$), two regimes of constant thickening can be identified: at small capillary number, $\\alpha$ is large due to a confinement and surface elasticity (or Marangoni) effects and at large Ca, $\\alpha$ is slightly higher than unity, due to surface viscous effects. At intermediate Ca, $\\alpha$ decreases as Ca increases along a "dynamic transition". In the case of non-ionic surfactants, the dynamic transition occurs at a fixed Ca, independently of the surfactant concentration, while for ionic surfactants, the dynamic transition depends on the concentration due to the existence of an electrostatic barrier. The control of physico-chemical parameters allowed us to elucidate the nature of the dynamic transition and to relate it to surface rheology.

Jérôme Delacotte; Lorraine Montel; Frédéric Restagno; Benoît Scheid; Benjamin Dollet; Howard A. Stone; Dominique Langevin; Emmanuelle Rio

2011-06-10T23:59:59.000Z

312

Ultrafast gating of proximity-focused microchannel-plate intensifiers  

SciTech Connect (OSTI)

Proximity-focused, microchannel-plate (MCP) image intensifiers have been used at Los Alamos for many years to allow single frame film and video exposure times in the range of 2.5 to 10 ns. There is now a program to reduce gating times to < 1 ns. This paper reviews previous work and the problems in achieving good resolution with gating times of < 1 ns. The key problems involve applying fast electrical gating signals to the tube elements. We present computer modeling studies of the combined tube, tube connection, and pulser system and show that low photocathode surface resistivity must be obtained to permit fast gating between the photocathode and the MCP input. We discuss ways of making low-resistivity S20 photocathodes, using gallium arsenide photocathodes, and various means of gating the tubes. A variety of pulser designs are being experimentally evaluated including spark gaps, avalanche transistors, Krytron tubes with sharpening gaps, step recovery diodes, and photoconductive elements (PCEs). The results of these studies are presented. Because of the high capacitances involved in most gating schemes, the tube connection geometry must be of low-impedance design, and our solution is presented. Finally, ways of testing these high-speed camera systems are discussed.

Lundy, A.S.; Iverson, A.E.

1982-01-01T23:59:59.000Z

313

Combined upper limit for SM Higgs at the Tevatron  

SciTech Connect (OSTI)

We combine results from CDF and D0 on direct searches for a standard model (SM) Higgs boson (H) in p{bar p} collisions at the Fermilab Tevatron at {radical}s = 1.96 TeV. Compared to the previous Higgs Tevatron combination, more data and new channels (WH {yields} {tau}{nu}b{bar b}, VH {yields} {tau}{tau}b{bar b}/jj{tau}{tau}, VH {yields} jjb{bar b}, t{bar t}H {yields} t{bar t}b{bar b}) have been added. Most previously used channels have been reanalyzed to gain sensitivity. We use the latest parton distribution functions and gg {yields} H theoretical cross sections when comparing our limits to the SM predictions. With 2.0-3.6 fb{sup -1} of data analyzed at CDF, and 0.9-4.2 fb{sup -1} at D0, the 95%C.L. upper limits on Higgs boson production are a factor of 2.5 (0.86) times the SM cross section for a Higgs boson mass of m{sub H} = 115 (165) GeV/c{sup 2}. Based on simulation, the corresponding median expected upper limits are 2.4 (1.1). The mass range excluded at 95% C.L. for a SM Higgs has been extended to 160 < m{sub H} < 170 GeV/c{sup 2}.

Penning, Bjorn; /Fermilab

2009-01-01T23:59:59.000Z

314

Visible and Infrared Optical Design for the ITER Upper Ports  

SciTech Connect (OSTI)

This document contains the results of an optical design scoping study of visible-light and infrared optics for the ITER upper ports, performed by LLNL under contract for the US ITER Project Office. ITER is an international collaboration to build a large fusion energy tokamak with a goal of demonstrating net fusion power for pulses much longer than the energy confinement time. At the time of this report, six of the ITER upper ports are planned to each to contain a camera system for recording visible and infrared light, as well as other diagnostics. the performance specifications for the temporal and spatial resolution of this system are shown in the Section II, Functional Specifications. They acknowledge a debt to Y. Corre and co-authors of the CEA Cadarache report ''ITER wide-angle viewing and thermographic and visible system''. Several of the concepts used in this design are derived from that CEA report. The infrared spatial resolution for optics of this design is diffraction-limited by the size of the entrance aperture, at lower resolution than listed in the ITER diagnostic specifications. The size of the entrance aperture is a trade-off between spatial resolution, optics size in the port, and the location of relay optics. The signal-to-noise ratio allows operation at the specified time resolutions.

Lasnier, C; Seppala, L; Morris, K; Groth, M; Fenstermacher, M; Allen, S; Synakowski, E; Ortiz, J

2007-03-01T23:59:59.000Z

315

Laser/matter interactions by laser-launched plates and direct laser shocks  

SciTech Connect (OSTI)

Explosives, gas guns, laser-launched flyer plates, and direct laser-irradiation can be used to generate shocks and high-stress in materials. Each method has a unique diameter and thickness of shock that can be generated. In past years, small laboratory lasers have been used to launch flyer plates 2 - 200-pm thick to terminal velocities 0.1 to 5 k d s . Over the past few years we have been using our TRIDENT laser facility (1kJ in 0.2 to 2ps) to accelerate larger diameter (8 mm) and thicker (0.1 - 1.5 mm) flyer plates. These larger diameters and thicker one-dimensional plates more closely compliment traditional experimental methods such as gas guns. The 8-mm diameter and 1-mm thick flyer plates can impart shocks in metals for constitutive dynamic property measurements. The versatility of laser-driven plates permits spatial and temporal profiles of the flyer plate impact on sample targets. LASNEX models and parameters of the laser drive can be used to optimize optical coupling efficiency. The flyer plate launch, acceleration, terminal velocity, and, depending on the experiment, flyer plate impact on to target materials are recorded using point-interferometry (VISAR), and line-imaging interferometry. These high speed optical and laser experimental methods will be described along with ancillary methods, and material data. Constitutive properties of bulk materials, rate effects, and grain size and/or orientation have been studied for several metals including copper, beryllium, gold, and some alloys.

Paisley, Dennis L.; Swift, D. C. (Damian C.); Kopp, R. A. (Roger A.); Montgomery, D. S. (David S.); Johnson, R. P. (Randall P.); Munson, C. P. (Carter P.); Letzring, S. A. (Samuel A.); Niemczura, J. G. (Johnathan G.)

2003-01-01T23:59:59.000Z

316

Method and apparatus for actively controlling a micro-scale flexural plate wave device  

DOE Patents [OSTI]

An actively controlled flexural plate wave device provides a micro-scale pump. A method of actively controlling a flexural plate wave device produces traveling waves in the device by coordinating the interaction of a magnetic field with actively controlled currents. An actively-controlled flexural plate wave device can be placed in a fluid channel and adapted for use as a micro-scale fluid pump to cool or drive micro-scale systems, for example, micro-chips, micro-electrical-mechanical devices, micro-fluid circuits, or micro-scale chemical analysis devices.

Dohner, Jeffrey L. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

317

Demonstration of 12 nm resolution Fresnel zone plate lens based soft x-ray microscopy  

SciTech Connect (OSTI)

To extend soft x-ray microscopy to a resolution of order 10 nm or better, we developed a new nanofabrication process for Fresnel zone plate lenses. The new process, based on the double patterning technique, has enabled us to fabricate high quality gold zone plates with 12 nm outer zones. Testing of the zone plate with the full-field transmission x-ray microscope, XM-1, in Berkeley, showed that the lens clearly resolved 12 nm lines and spaces. This result represents a significant step towards 10 nm resolution and beyond.

Chao, W.; Kim, J.; Rekawa, S.; Fischer, P.; Anderson, E. H.

2009-06-05T23:59:59.000Z

318

A photoelastic study of rectangular plates in tension with nonsymmetric loading through a single circular hole  

E-Print Network [OSTI]

. 125, respectively. The amount of xnaterial below the hole was reduced in three increments during the course of the research from an initial h/w of 0. 500 to ratios of h/w of 0. 375, 0. 250 and 0. 125 on each plate. To provide a measure of control.... This 14 percent difference which initially existed between the control plate 1A and Frocht's data still cannot be explained, but it can now be considered a constant difference since data from all four plates were used in the comparison noted above...

Love, Richard Meigs

2012-06-07T23:59:59.000Z

319

A parametric analysis of bone fixation plates on fractured equine third metacarpal  

E-Print Network [OSTI]

of metallic materials, were also being investigated and tried clinically. The earliesr types of metal plates to be used were made of nickel-steel, iron, or silver (1). These early plates were generally attached to the fractured Numbers in parentheses...A P~TRIC ANALYSIS OI' BONE FIXATION PLATES ON FRACTURED EQUINE THIRD lKTACARPAL A Thesis by Donald Reagan Ray Submitted to tnk Graduate College of Texas A&N University in partial fulfillment of the requirement for the degree of MASTER...

Ray, Donald Reagan

1970-01-01T23:59:59.000Z

320

21-PWR WASTE PACKAGE WITH ABSORBER PLATES LOADING CURVE EVALUATION  

SciTech Connect (OSTI)

The objective of this calculation is to evaluate the required minimum burnup as a function of initial pressurized water reactor (PWR) assembly enrichment that would permit loading of spent nuclear fuel into the 21 PWR waste package with absorber plates design as provided in Attachment IV. This calculation is an example of the application of the methodology presented in the ''Disposal Criticality Analysis Methodology Topical Report'' (YMP 2003). The scope of this calculation covers a range of enrichments from 0 through 5.0 weight percent U-235, and a burnup range of 0 through 45 GWd/MTU. Higher burnups were not necessary because 45 GWd/MTU was high enough for the loading curve determination. This activity supports the validation of the use of burnup credit for commercial spent nuclear fuel applications. The intended use of these results will be in establishing PWR waste package configuration loading specifications. Limitations of this evaluation are as follows: (1) The results are based on burnup credit for actinides and selected fission products as proposed in YMP (2003, Table 3-1) and referred to as the ''Principal Isotopes''. Any change to the isotope listing will have a direct impact on the results of this report. (2) The results are based on 1.5 wt% Gd in the Ni-Gd Alloy material and having no tuff inside the waste package. If the Gd loading is reduced or a process to introduce tuff inside the waste package is defined, then this report would need to be reevaluated based on the alternative materials. This calculation is subject to the ''Quality Assurance Requirements and Description'' (QARD) (DOE 2004) because it concerns engineered barriers that are included in the ''Q-List'' (BSC 2004k, Appendix A) as items important to safety and waste isolation.

J.M. Scaglione

2004-12-17T23:59:59.000Z

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Biomechancis of biological fixation utilizing a plate with and without an intramedullary rod  

E-Print Network [OSTI]

fixation using both a bone plate and an intrameduhary rod for fracture reduction. The combined system aims at reduction of the incidence of failure of the fixation device, preserving the biological environment and maintaining low levels of interfragmentary...

Nori, Meera

1994-01-01T23:59:59.000Z

322

Torsion properties of biological fixation utilizing a plate with and without an intramedullary rod  

E-Print Network [OSTI]

, and maintain anatomical alignment. This facilitates the healing process, allowing the union of bone segments. The continuing search for improved internal fixation of fractures has led to a new technique that employs a bone plate with an intramedullary rod...

Keiser, Michael

1995-01-01T23:59:59.000Z

323

Accreted oceanic terranes in Ecuador : Southern edge of the Caribbean plate ?  

E-Print Network [OSTI]

Accreted oceanic terranes in Ecuador : Southern edge of the Caribbean plate ? Etienne Jaillard (1 plateau of Ecuador is interpreted as part of the Caribbean ocean- ic plateau (COP), because

Paris-Sud XI, Université de

324

Comparison of direct plating versus filtering of egg shells inoculated with Salmonella typhimurium  

E-Print Network [OSTI]

Comparison of enumeration of egg shell bacterial load by a conventional direct plating method and a neoteric filtering method was evaluated. Egg shells were inoculated with approximately 10³ S. typhimurium organisms. Initial experiments evaluated...

Reynolds, Paige Lea

2012-06-07T23:59:59.000Z

325

Experimental Investigations of Vortex Induced Vibration of A Flat Plate in Pitch Oscillation  

E-Print Network [OSTI]

A bluff structure placed in a flowing fluid, may be subjected to vortex-induced vibrations (VIV). For a flat plate with only rotational degree of freedom, the VIV is rotational oscillation. Based on the experimental investigation, vortex...

Yang, Yi

2012-02-14T23:59:59.000Z

326

E-Print Network 3.0 - angular stable plating Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: a glass plate with grooves, which allows a fast and precise placement of the coil used for calibrating... , the head and thorax are held almost stable, with the head...

327

E-Print Network 3.0 - anisotropic plates restrained Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

results for: anisotropic plates restrained Page: << < 1 2 3 4 5 > >> 1 IOP PUBLISHING SMART MATERIALS AND STRUCTURES Smart Mater. Struct. 17 (2008) 035018 (10pp) doi:10.1088...

328

Detection of NonSymmetrical Damage in Smart PlateLike Structures 1  

E-Print Network [OSTI]

and compared to experimental data obtained from tests on cantilever aluminum plate­like structures damaged such as the aerospace, automotive and machine­tool industries. In particular, smart structures with self actuating

329

Investigation on Wave Propagation Characteristics in Plates and Pipes for Identification of Structural Defect Locations  

E-Print Network [OSTI]

For successful identification of structural defects in plates and pipes, it is essential to understand structural wave propagation characteristics such as dispersion relations. Analytical approaches to identify the dispersion relations...

Han, Je Heon

2013-07-31T23:59:59.000Z

330

Instabilities of jets of non-Newtonian fluids impacting a plate  

E-Print Network [OSTI]

The problem of buckling and coiling of jets of viscous, Newtonian liquids impacting a plate has received a substantial level of attention over the past two decades, both from experimental and theoretical points of view. ...

Varagnat, Matthieu

2008-01-01T23:59:59.000Z

331

Effectiveness of nickel plating in inhibiting atmospheric corrosion of copper alloy contacts  

SciTech Connect (OSTI)

A series of tests was run to determine the effect of Ni plating thickness on connector contact resistance. Copper coupons were plated with an electrolytic nickel strike followed by electroless nickel to produce Ni layers of 10, 20, 55 and 100 {micro}in. The coupons were then exposed to a simulated industrial environment. Pore corrosion was observed after the exposure, which correlated with Ni thickness. In a second series of tests, beryllium-copper four-tine contacts with 50 {micro}in of gold plate over electrolytic nickel strike/electroless-nickel plates of varying thickness were exposed the same corrosive environment. Contact resistance of mated pairs was monitored over a two-month period. The degradation in contact resistance correlated with the Ni thickness used in the connectors.

Ernest, T.; Sorensen, R.; Guilinger, T.

1997-12-31T23:59:59.000Z

332

Evolution of the Galapagos Rise and the Bauer Microplate: implications for the Nazca plate  

E-Print Network [OSTI]

Analysis of the satellite altimetry based predicted bathymetry, magnetic anomalies, and earthquake seismic data relating to the geophysical structure on the Nazca plate indicates that the Galapagos Rise system served as the transitional spreading...

Wright, Jennifer Catherine McGuire

2006-04-12T23:59:59.000Z

333

The effects of emitter-tied field plates on lateral PNP ionizing radiation response  

SciTech Connect (OSTI)

Radiation response comparisons of lateral PNP bipolar technologies reveal that device hardening may be achieved by extending the emitter contact over the active base. The emitter-tied field plate suppresses recombination of carriers with interface traps.

Barnaby, H.J.; Schrimpf, R.D.; Cirba, C.R. [Vanderbilt Univ., Nashville, TN (United States); Pease, R.L. [RLP Research, Inc., Albuquerque, NM (United States); Fleetwood, D.M. [Sandia National Labs., Albuquerque, NM (United States); Kosier, S.L. [VTC Inc., Bloomington, MN (United States)

1998-03-01T23:59:59.000Z

334

a533-b steel plates: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SHEAR WALLS USING DUAL STRIP MODEL Engineering Websites Summary: ANALYTICAL STUDY ON STEEL PLATE SHEAR WALLS USING DUAL STRIP MODEL AND 3D FE MODEL B.QU and M, Taiwan and other...

335

Analysis of three idealized reactor configurations: plate, pin, and homogeneous. [LMFBR  

SciTech Connect (OSTI)

Detailed Monte Carlo calculations have been performed for three distinct configurations of an idealized fast critical assembly. This idealized assembly was based on the LMFBR benchmark critical assembly ZPR-6/7. In the first configuration, the entire core was loaded with the plate unit cell of ZPR-6/7. In the second configuration, the entire core was loaded with the ZPR sodium-filled pin calandria. The actual ZPR pin calandria are loaded with mixed (U,Pu) oxide pins which closely match the composition of the ZPR-6/7 plate unit cell. For the present study, slight adjustments were made in the atom concentrations and the length of the pin calandria in order to make the core boundaries and average composition for the pin-cell configuration identical to those of the plate-cell configuration. In the third configuration, the core was homogeneous, again with identical core boundaries and average composition as the plate and pin configurations.

McKnight, R.D.

1983-01-01T23:59:59.000Z

336

E-Print Network 3.0 - acoustic-transparent thin plates Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Energy Storage, Conversion and Utilization 15 JA sensitivity root assay protocol (using agar plates with shelves) Neva Laurie-Berry Summary: the media at the thin spots, and begin...

337

Nuclear reactor fuel structure containing uranium alloy wires embedded in a metallic matrix plate  

SciTech Connect (OSTI)

A nuclear fuel-containing plate structure for a nuclear reactor is described; such structure comprising a pair of malleable metallic non-fissionable matrix plates having confronting surfaces which are pressure bonded together and fully united to form a bonded surface, and elongated malleable wire-like fissionable fuel members separately confined and fully enclosed between the matrix plates along the interface to afford a high fuel density as well as structural integrity and effective retention of fission products. The plates have separate recesses formed in the confronting surfaces for closely receiving the wire-like fissionable fuel members. The wire-like fissionable fuel members are made of a maleable uranium alloy capable of being formed into elongated wire-like members and capable of withstanding pressure bonding. The wire-like fissionable fuel members are completely separated and isolated by fully united portions of the interface.

Travelli, A.

1988-01-19T23:59:59.000Z

338

Design of Flat-Plate Dehumidifiers for Humidification–Dehumidification Desalination Systems  

E-Print Network [OSTI]

Flat-plate heat exchangers are examined for use as dehumidifiers in humidification–dehumidification (HDH) desalination systems. The temperature and humidity ratio differences that drive mass transfer are considerably higher ...

Sievers, Martin

339

Design of Plate-Fin Tube Dehumidifiers for Humidification-Dehumidification Desalination Systems  

E-Print Network [OSTI]

A two-dimensional numerical model of a plate-fin tube heat exchanger for use as a dehumidifier in a humidification-dehumidification (HDH) desalination systems is developed, because typical heating, ventilating, and air ...

Sievers, Martin

340

Measurement of light capture in solar cells from silver- and tin-plated patterned bus bars  

E-Print Network [OSTI]

Bus bars on solar cells shade silicon from light. When the bus bars are patterned, they can reflect light back onto the silicon using total internal reflection. These patterned bus bars are tin plated and produce 1-2.5% ...

Winiarz, Christine Eve

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

An evaluation of finite element models of stiffened plates subjected to impulsive loading  

E-Print Network [OSTI]

Different finite element models are evaluated for two very common structures, a cantilever beam and a stiffened plate, subjected to impulsive loading. For the cantilever beam case, the finite element models are one, two ...

Pedatzur, Omri

2004-01-01T23:59:59.000Z

342

E-Print Network 3.0 - anchor plates Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

search results for: anchor plates Page: << < 1 2 3 4 5 > >> 1 SURFACE-MICROMACHINED BEAMS WITHOUT SPRING EFFECT OF ANCHOR STEP-UP Summary: SURFACE-MICROMACHINED BEAMS WITHOUT...

343

Characterization of residual stress relaxation in welded steel plate using TAP-NDE and wavelets.  

E-Print Network [OSTI]

??This thesis presents the characterization of residual stress relaxation in a welded ASTM 1018 steel plate by using the Thermo-Acousto-Photonic Nondestructive Evaluation (TAP-NDE) technique and… (more)

Jhun, Choon-Sik

2012-01-01T23:59:59.000Z

344

Numerical Methods in Offshore Geotechnics: Applications to Submarine Landslides and Anchor Plates  

E-Print Network [OSTI]

combined shear and torsion. Plate anchors are increasingly being used instead of typical foundation systems to anchor offshore floating platforms to sustain uplift operating forces. However extreme loading cases would create general loading conditions...

Nouri, Hamid Reza

2013-05-08T23:59:59.000Z

345

Light-Weight, Low-Cost, Single-Phase, Liquid-Cooled Cold Plate (Presentation)  

SciTech Connect (OSTI)

This presentation, 'Light-Weight, Low-Cost, Single-Phase Liquid-Cooled Cold Plate,' directly addresses program goals of increased power density, specific power, and lower cost of power electronics components through improved thermal management.

Narumanchi, S.

2013-07-01T23:59:59.000Z

346

Light-Weight, Single-Phase, Liquid-Cooled Cold Plate (Presentation)  

SciTech Connect (OSTI)

This presentation, 'Light-Weight, Low-Cost, Single-Phase Liquid-Cooled Cold Plate,' directly addresses program goals of increased power density, specific power, and lower cost of power electronics components through improved thermal management.

Narumanchi, S.

2013-07-01T23:59:59.000Z

347

Highly conductive thermoplastic composites for rapid production of fuel cell bipolar plates  

DOE Patents [OSTI]

A low cost method of fabricating bipolar plates for use in fuel cells utilizes a wet lay process for combining graphite particles, thermoplastic fibers, and reinforcing fibers to produce a plurality of formable sheets. The formable sheets are then molded into a bipolar plates with features impressed therein via the molding process. The bipolar plates formed by the process have conductivity in excess of 150 S/cm and have sufficient mechanical strength to be used in fuel cells. The bipolar plates can be formed as a skin/core laminate where a second polymer material is used on the skin surface which provides for enhanced conductivity, chemical resistance, and resistance to gas permeation.

Huang, Jianhua [Blacksburg, VA; Baird, Donald G [Blacksburg, VA; McGrath, James E [Blacksburg, VA

2008-04-29T23:59:59.000Z

348

Response of a grooved plate subjected to out-of-plane contact loading  

E-Print Network [OSTI]

The response of a grooved plate subjected to out-of-plane contact loading is examined. The influence of selected geometric and loading parameters are investigated, as well as the effects of various boundary conditions. The ...

Bastien, Christopher J

2008-01-01T23:59:59.000Z

349

Free Energies of Dilute Bose gases: upper bound  

E-Print Network [OSTI]

We derive a upper bound on the free energy of a Bose gas system at density $\\rho$ and temperature $T$. In combination with the lower bound derived previously by Seiringer \\cite{RS1}, our result proves that in the low density limit, i.e., when $a^3\\rho\\ll 1$, where $a$ denotes the scattering length of the pair-interaction potential, the leading term of $\\Delta f$ the free energy difference per volume between interacting and ideal Bose gases is equal to $4\\pi a (2\\rho^2-[\\rho-\\rhoc]^2_+)$. Here, $\\rhoc(T)$ denotes the critical density for Bose-Einstein condensation (for the ideal gas), and $[\\cdot ]_+$ $=$ $\\max\\{\\cdot, 0\\}$ denotes the positive part.

Jun Yin

2010-12-19T23:59:59.000Z

350

Depositional environments of Pennsylvanian Upper Strawn Group in McCulloch and San Saba Counties, Texas  

SciTech Connect (OSTI)

Upper Strawn Group (Desmoinesean) represents a transition to fluvial facies from progradational deltaic facies. The lower part of the upper Strawn is composed mostly of horizontally bedded, fine-grained sandstones and shales of a distal delta-front origin. These sandstones and shales exhibit foreset bed dips of up to 15/sup 0/. In addition to the dipping foreset beds, the delta-front facies on occasion contain small listric normal faults, resulting from periodic higher rates of sedimentation. The middle parts of the upper Strawn consist predominantly of massive, fine to medium-grained, mature sandstones which represent distributary-mouth-bar deposits, as well as other proximal delta-front deposits such as distributary channels. The upper part of the upper Strawn consists of fluvial trough cross-bedded sandstones and chert-pebble conglomerates. These overlie the deltaic facies and indicate the final stages of upper Strawn deposition. The upper Strawn is overlain by the Adams Branch limestone and shales which represent marine transgression and subsequent shallow-marine deposition. The upper Strawn Group in McCulloch and San Saba Counties, Texas, represents continued filling of the Fort Worth basin during Desmoinesean time. The upper Strawn overlies the lower Strawn, an older, deeper water facies, in most parts of the study area. The upper Strawn overlies the Atokan age Marble Falls Limestone in an isolated section of the study area due to its position there on the Concho arch.

Jamieson, W.H. Jr.

1983-03-01T23:59:59.000Z

351

The effects between two slotted plate flow meter under single, two, three components flow condition  

E-Print Network [OSTI]

THE INTERACTION BETWEEN A TWO SLOTTED PLATE FLOW METER UNDER ONE, TWO, OR THREE COMPONENT FLOW CONDITIONS A Thesis by SANG HYUN PARK Submitted to the Office of Graduate Studies of Texas A&M University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE December 2004 Major Subject: Mechanical Engineering THE INTERACTION BETWEEN A TWO SLOTTED PLATE FLOW METER UNDER ONE, TWO, OR THREE COMPONENT FLOW...

Park, Sang Hyan

2005-02-17T23:59:59.000Z

352

The Casimir Energy for a Hyperboloid Facing a Plate in the Optical Approximation  

E-Print Network [OSTI]

We study the Casimir energy of a massless scalar field that obeys Dirichlet boundary conditions on a hyperboloid facing a plate. We use the optical approximation including the first six reflections and compare the results with the predictions of the proximity force approximation and the semi-classical method. We also consider finite size effects by contrasting the infinite with a finite plate. We find sizable and qualitative differences between the new optical method and the more traditional approaches.

O. Schroeder; A. Scardicchio; R. L. Jaffe

2005-07-21T23:59:59.000Z

353

Microstructural Analysis of Irradiated U-Mo Fuel Plates: Recent Results  

SciTech Connect (OSTI)

Microstructural characterization of irradiated dispersion and monolithic RERTR fuel plates using scanning electron microscopy (SEM) is being performed in the Electron Microscopy Laboratory at the Idaho National Laboratory. The SEM analysis of samples from U-Mo dispersion fuel plates focuses primarily on the behavior of the Si that has been added to the Al matrix to improve the irradiation performance of the fuel plate and on the overall behavior of fission gases (e.g., Xe and Kr) that develop as bubbles in the fuel microstructure. For monolithic fuel plates, microstructural features of interest, include those found in the U-Mo foil and at the U-Mo/Zr and Zr/6061 Al cladding interfaces. For both dispersion and monolithic fuel plates, samples have been produced using an SEM equipped with a Focused Ion Beam (FIB). These samples are of very high quality and can be used to uncover some very unique microstructural features that are typically not observed when characterizing samples produced using more conventional techniques. Overall, for the dispersion fuel plates with matrices that contained Si, narrower fuel/matrix interaction layers are typically observed compared to the fuel plates with pure Al matrix, and for the monolithic fuel plates microstructural features have been observed in the U-10Mo foil that are similar to what have been observed in the fuel particles found in U-Mo dispersion fuels. Most recently, more prototypic monolithic fuel samples have been characterized and this paper describes the microstructures that have been observed in these samples.

D. D. Keiser, Jr.; J. Jue; B. D. Miller; J. Gan; A. B. Robinson; P. V. Medvedev

2012-03-01T23:59:59.000Z

354

Improved design procedure for embedded plates in gravity anchors for precast concrete panels  

E-Print Network [OSTI]

is considered, and second, the shear area of the concrete resisting the applied shear to the studs is considered. Typically, the latter parameter controls the design, since most plate and stud anchorages are installed fairly close to the edge of a wall panel...IMPROVED DESIGN PROCEDURE FOR EMBEDDED PLATES IN GRAVITy ANCHORS FOR PRECAST CONCRETE PANELS A Thesis by Lawrence Fred Fragomeli Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements...

Fragomeli, Lawrence Fred

2012-06-07T23:59:59.000Z

355

Delamination characterization of composite plates with holes/inclusions under general in-plane loading  

E-Print Network [OSTI]

DELAMINATION CHARACTERIZATION OF COMPOSITE PLATES WITH HOLES/INCLUSIONS UNDER GENERAL IN ? PLANE LOADING A Thesis by RONALD BENSE Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1989 KIaj or Subject: Mechanical Engineering DELAMINATION CHARACTERIZATION OF COMPOSITE PLATES WITH HOLES/INCLUSIONS UNDER GENERAL IN ? PLANE LOADING A Thesis by RONALD BENSE Approved as to style and content by...

Bense, Ronald

2012-06-07T23:59:59.000Z

356

On the stress distribution in a thin rectangular plate subjected to shear  

E-Print Network [OSTI]

Average Stress, g difference in these Stresses, %max (Theoretica1) ) 'f max (Experimental), gmax (Exeter. ) vs g of C~ (Theo. ), ~rs. ~ 0 ~ ~ 0 Values of "+~" Ca1culated from ELemen- tary Beam Theory for Plate- (2 x 860) ~ ~ ~ ~ ~ /1 and Mrs t 1...) '( thin rectangu3. ar plate The theory of photoelasticity vas employed throughout the observations Ordinarily, it is assumed Chat such a shear stress is distributed uniformly over the section normal to the axis of the body~ in which case...

Travis, Darol Duane

2012-06-07T23:59:59.000Z

357

NO. RIY. NO. PLATING OF PSE LEVELING STOOL P'AGI 1 OP 4  

E-Print Network [OSTI]

the Type I Process from Document 238046. The Array D Stool, then, is plated: 1. With electroless Nickel 0 - which controls both Type I (Nickel deposit prior to gold as used on the sensor base) and Type II (Silver. 0002 to 0. 0003 per MIL-C-26074A. 2. Bright Nickel 0. 0005 to 0. 0008 per QQ-N-290 Type l 3. Gold Plate

Rathbun, Julie A.

358

Deformation of the Gorda Block of the Juan de Fuca Plate  

E-Print Network [OSTI]

of the northeast Pacific to be understood in the new plate tectonic framework. The area is undergoing active deformation, as evi- denced by non-linear magnetic lineations and a large amount of regional seismicil'y. The deformation began with the change in motion...) ~ ~ . . . , . . . . . . . . . . , . . . . . . . . 27 Figure 12: Velocity space diagram for the Gorda Block and Pacific plate . . . . . . . . . . . . . . . . . , , . . . . . , 31 Figure 13: Numbering scheme for magnetic lineations within the Gorda Block (after Carlson, 1981...

Stoddard, Paul Richard

1982-01-01T23:59:59.000Z

359

Radar cross section of triangular trihedral reflector with extended bottom plate.  

SciTech Connect (OSTI)

Trihedral corner reflectors are the preferred canonical target for SAR performance evaluation for many radar development programs. The conventional trihedrals have problems with substantially reduced Radar Cross Section (RCS) at low grazing angles, unless they are tilted forward, but in which case other problems arise. Consequently there is a need for better low grazing angle performance for trihedrals. This is facilitated by extending the bottom plate. A relevant analysis of RCS for an infinite ground plate is presented. Practical aspects are also discussed.

Brock, Billy C.; Doerry, Armin Walter

2009-05-01T23:59:59.000Z

360

A hierarchical structure of neural network implemented for the recognition of automobile license plate number  

E-Print Network [OSTI]

A HIERARCHICAL STRUCTURE OF NEURAL NETWORK IMPLEMENTED FOR THE RECOGNITION OF AUTOMOBILE LICENSE PLATE NURSER A Thesis by JOONGHO CHANG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfdlment... of the requirements for the degree of MASTER OF SCIENCE August 1994 Major Subject: Electrical Engineering A HIERARCHICAL STRUCTURE OF NEURAL NETWORK IMPLEMENTED FOR THE RECOGNITION OF AUTOMOBILE LICENSE PLATE NUMBER A Thesis by JOONGHO CHANG Submitted...

Chang, Joongho

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
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361

Evaluation of a slotted orifice plate flow meter using horizontal two phase flow  

E-Print Network [OSTI]

EVALUATION OF A SLOTTED ORIFICE PLATE FLOW METER USING HORIZONTAL TWO PHASE FLOW A Thesis by ANITA ELENA FLORES Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 2000 Major Subject: Mechanical Engineering EVALUATION OF A SLOTTED ORIFICE PLATE FLOW METER USING HORIZONTAL TWO PHASE FLOW A Thesis by ANITA ELENA FLORES Submitted to Texas A&M University in partial fulfillment...

Flores, Anita Elena

2000-01-01T23:59:59.000Z

362

A finite element model for laminated composite plates with matrix cracks and delaminations  

E-Print Network [OSTI]

A FINITE ELEMENT MODEL FOR LAMINATED COMPOSITE PLATES WITH MATRIX CRACKS AND DELAMINATIONS A Thesis by KEVIN DANIEL BUIE Submitted to the Office of Graduate Studies of Texas ASM University in partial fulfillment of' the requirements... for the degree of MASTER OF SCIENCE December 1988 Major Subject: Aerospace Engineering A FINITE ELEMENT MODEL FOR LAMINATED COMPOSITE PLATES WITH MATRIX CRACKS AND DELAMINATIONS A Thesis by KEVIN DANIEL BUIE Approved as to style and content by: David H...

Buie, Kevin Daniel

1988-01-01T23:59:59.000Z

363

Analysis and experimental study of a plate-type hydraulic vibration damper for cryogenic rotating machinery  

E-Print Network [OSTI]

ANALYSIS AND EXPERIMENTAL STUDY OF A PLATE-TYPE HYDRAULIC VIBRATION DAMPER FOR CRYOGENIC ROTATING MACHINERY A Thesis by EMMANUEL ANGUSTIA OLAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1991 Major Subject: Mechanical Engineering ANALYSIS AND EXPERIMENTAL STUDY OF A PLATE-TYPE HYDRAULIC VIBRATION DAMPER FOR CRYOGENIC ROTATING MACHINERY A Thesis by EMMANUEL ANGUSTIA OLAN Approved...

Olan, Emmanuel Angustia

1991-01-01T23:59:59.000Z

364

Nuclear reactor fuel structure containing uranium alloy wires embedded in a metallic matrix plate  

DOE Patents [OSTI]

A flat or curved plate structure, to be used as fuel in a nuclear reactor, comprises elongated fissionable wires or strips embedded in a metallic continuous non-fissionable matrix plate. The wires or strips are made predominantly of a malleable uranium alloy, such as uranium silicide, uranium gallide or uranium germanide. The matrix plate is made predominantly of aluminum or an aluminum alloy. The wires or strips are located in a single row at the midsurface of the plate, parallel with one another and with the length dimension of the plate. The wires or strips are separated from each other, and from the surface of the plate, by sufficient thicknesses of matrix material, to provide structural integrity and effective fission product retention, under neutron irradiation. This construction makes it safely feasible to provide a high uranium density, so that the uranium enrichment with uranium 235 may be reduced below about 20%, to deter the reprocessing of the uranium for use in nuclear weapons.

Travelli, A.

1985-10-25T23:59:59.000Z

365

Nuclear reactor fuel structure containing uranium alloy wires embedded in a metallic matrix plate  

SciTech Connect (OSTI)

A flat or curved plate structure, to be used as fuel in a nuclear reactor, comprises elongated fissionable wires or strips embedded in a metallic continuous non-fissionable matrix plate. The wires or strips are made predominantly of a malleable uranium alloy, such as uranium silicide, uranium gallide or uranium germanide. The matrix plate is made predominantly of aluminum or an aluminum alloy. The wires or strips are located in a single row at the midsurface of the plate, parallel with one another and with the length dimension of the plate. The wires or strips are separated from each other, and from the surface of the plate, by sufficient thicknesses of matrix material, to provide structural integrity and effective fission product retention, under neutron irradiation. This construction makes it safely feasible to provide a high uranium density, so that the uranium enrichment with uranium 235 may be reduced below about 20%, to deter the reprocessing of the uranium for use in nuclear weapons.

Travelli, Armando (Hinsdale, IL)

1988-01-01T23:59:59.000Z

366

Heat Transfer -2 A heat generating ( ) flat plate fuel element of thickness 2L is covered with flat plate steel cladding of  

E-Print Network [OSTI]

with flat plate steel cladding of thickness b. The heat generated is removed by a fluid at T, which adjoins on both sides On the sketch show regions where dT/dx is zero, constant and increasing. T , h x LL bb SteelSteel

Virginia Tech

367

Coalbed gases and hydrocarbon source rock potential of upper Carboniferous coal-bearing strata in upper Silesian Coal Basin, Poland  

SciTech Connect (OSTI)

The Upper Silesian Coal Basin (USCB) is one of the major Upper Carboniferous coal basins in the world. Its coalbed gas reserves to the depths of 1,000 m are estimated to be about 350 billion cubic meters (about 12.4 TCF). Coalbed gases in the USCB are variable in both molecular and stable isotope composition [{delta}{sup 13}C(CH{sub 4}), {delta}D(CH{sub 4}), {delta}{sup 13}C(C{sub 2}H{sub 6}), {delta}{sup 13}C(C{sub 3}H{sub 8}), {delta}{sup 13}C(CO{sub 2})]. Such variability suggests the effects of both primary reactions operating during the generation of gases and secondary processes such as mixing and migration. Coalbed gases are mostly thermogenic methane in which depth-related isotopic fractionation has resulted from migration but not from mixing with the microbial one. The stable carbon isotope composition indicates that the carbon dioxide, ethane and higher gaseous hydrocarbons were generated during the bituminous coal stage of the coalification process. The main stage of coalbed gas generation occurred during the Variscan orogeny, and generation was completed after the Leonian and Asturian phases of this orogeny. The coals and carbonaceous shales have high gas generation potential but low potential for generation and expulsion of oil compared to the known Type III source rocks elsewhere. In general, the carbonaceous shales have slightly higher potential for oil generation, but probably would not be able to exceed expulsion thresholds necessary to expel economic quantities of oil.

Kotarba, M.J.J. [Univ. of Mining and metallurgy, Cracow (Poland); Clayton, J.L.; Rice, D.D. [Geological Survey, Denver, CO (United States)

1996-12-31T23:59:59.000Z

368

Hardness and microstructural response to thermal annealing of irradiated ASTM A533B class 1 plate steel  

SciTech Connect (OSTI)

Hardness measurements were used to determine the post-irradiation annealing response of A533B class 1 plate steel irradiated to a fluence of 1 {times} 10{sup 19} n/cm{sup 2} (E > 1 MeV) at 150 C. Rockwell hardness measurements indicated that the material had hardened by 6.6 points on the B scale after irradiation. The irradiation induced hardness increase was associated with a decrease in upper shelf energy from 63.4 J to 5-1.8 J and a temperature shift in the Charpy curve at the 41 J level from 115 C to 215 C. Specimens were annealed after irradiation at temperatures of 343 C (650 F), 399 C (750 F), and 454 C (850 F) for durations of up to one week (168 h). Hardness measurements were made to chart recovery of hardness as a function of time and temperature. Specimens annealed at the highest temperature 454 C recovered the fastest, fully recovering within 144 h. Specimens annealed at 399 C recovered completely within 168 h. Specimens annealed at the lowest temperature, 343 C recovered only {approximately}70% after 168 h of annealing. After neutron irradiation, a new feature of black spot damage was found to be superimposed on the unirradiated microstructure. The density of black spots was found to vary from 2.3 {times} 10{sup 15}/cm{sup 3} to 1.1 {times} 10{sup 16}/cm{sup 3} with an average diameter of 2.85 nm. Following annealing at 454 C for 24 h the black spot damage was completely annealed out. It was concluded that the black spot damage was responsible for 70% of the irradiation-induced hardness.

Reinhart, D.E. [SMS Concast, Inc., Pittsburgh, PA (United States); Kumar, A.S. [Univ. of Missouri, Rolla, MO (United States); Gelles, D.S.; Hamilton, M.L. [Pacific Northwest Lab., Richland, WA (United States); Rosinski, S.T. [Electric Power Research Inst., Charlotte, NC (United States)

1999-10-01T23:59:59.000Z

369

E-Print Network 3.0 - anisotropic upper critical Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

30 A two-dimensional hybrid method for modeling seismic wave propagation in anisotropic media Summary: upper mantle. We calculated the synthetics for a series of laterally...

370

Stratigraphic cyclicity and reservoir heterogeneity within upper San Andres and Grayburg strata (upper Permian-Guadalupian), Maljamar field, Se New Mexico  

E-Print Network [OSTI]

of upper San Andres strata. Cavernous porosity was later plugged with massive anhydrite, resulting in the degradation of reservoir quality. In the overlying Grayburg Formation, cycles consist of mixed sandstone and shallowwater carbonate facies...

Modica, Christopher James

1997-01-01T23:59:59.000Z

371

Determination of thermal accommodation coefficients from heat transfer measurements between parallel plates.  

SciTech Connect (OSTI)

Thermal accommodation coefficients have been derived for a variety of gas-surface combinations using an experimental apparatus developed to measure the pressure dependence of the conductive heat flux between parallel plates at unequal temperature separated by a gas-filled gap. The heat flux is inferred from temperature-difference measurements across the plates in a configuration where the plate temperatures are set with two carefully controlled thermal baths. Temperature-controlled shrouds provide for environmental isolation of the opposing test plates. Since the measured temperature differences in these experiments are very small (typically 0.3 C or less over the entire pressure range), high-precision thermistors are used to acquire the requisite temperature data. High-precision components have also been utilized on the other control and measurement subsystems in this apparatus, including system pressure, gas flow rate, plate alignment, and plate positions. The apparatus also includes the capability for in situ plasma cleaning of the installed test plates. Measured heat-flux results are used in a formula based on Direct Simulation Monte Carlo (DSMC) code calculations to determine the thermal accommodation coefficients. Thermal accommodation coefficients have been determined for three different gases (argon, nitrogen, helium) in contact with various surfaces. Materials include metals and alloys such as aluminum, gold, platinum, and 304 stainless steel. A number of materials important to fabrication of Micro Electro Mechanical Systems (MEMS) devices have also been examined. For most surfaces, coefficient values are near 0.95, 0.85, and 0.45 for argon, nitrogen, and helium, respectively. Only slight differences in accommodation as a function of surface roughness have been seen. Surface contamination appears to have a more significant effect: argon plasma treatment has been observed to reduce thermal accommodation by as much as 0.10 for helium. Mixtures of argon and helium have also been examined, and the results have been compared to DSMC simulations incorporating thermal-accommodation values from single-species experiments.

Gallis, Michail A.; Castaneda, Jaime N.; Rader, Daniel John; Torczynski, John Robert; Trott, Wayne Merle

2010-10-01T23:59:59.000Z

372

Fuel loading and homogeneity analysis of HFIR design fuel plates loaded with uranium silicide fuel  

SciTech Connect (OSTI)

Twelve nuclear reactor fuel plates were analyzed for fuel loading and fuel loading homogeneity by measuring the attenuation of a collimated X-ray beam as it passed through the plates. The plates were identical to those used by the High Flux Isotope Reactor (HFIR) but were loaded with uranium silicide rather than with HFIR`s uranium oxide fuel. Systematic deviations from nominal fuel loading were observed as higher loading near the center of the plates and underloading near the radial edges. These deviations were within those allowed by HFIR specifications. The report begins with a brief background on the thermal-hydraulic uncertainty analysis for the Advanced Neutron Source (ANS) Reactor that motivated a statistical description of fuel loading and homogeneity. The body of the report addresses the homogeneity measurement techniques employed, the numerical correction required to account for a difference in fuel types, and the statistical analysis of the resulting data. This statistical analysis pertains to local variation in fuel loading, as well as to ``hot segment`` analysis of narrow axial regions along the plate and ``hot streak`` analysis, the cumulative effect of hot segment loading variation. The data for all twelve plates were compiled and divided into 20 regions for analysis, with each region represented by a mean and a standard deviation to report percent deviation from nominal fuel loading. The central regions of the plates showed mean values of about +3% deviation, while the edge regions showed mean values of about {minus}7% deviation. The data within these regions roughly approximated random samplings from normal distributions, although the chi-square ({chi}{sup 2}) test for goodness of fit to normal distributions was not satisfied.

Blumenfeld, P.E.

1995-08-01T23:59:59.000Z

373

Environmental assessment for the Plating Shop Replacement, Y-12 Plant, Oak Ridge, Tennessee  

SciTech Connect (OSTI)

The existing of Y-12 Plant Plating Shop provides vital support functions for the US Department of Energy (DOE) Defense Programs operations. In addition to weapon component plating, the facility performs other plating services to support existing operations for the Y-12 Plant, other DOE facilities, and other federal agencies. In addition, the facility would also provide essential deplating services for weapons reclamation and teardown. The existing Y-12 Plant Plating Shop is presently located in a structure which is rapidly deteriorating and obsolete. The existing building structure was originally designed to house a steam plant, not chemical plating operations. As such, vapors from plating operations have deteriorated the structure to a point where a new facility is needed for continued safe operations. The potential environmental impacts of the proposed action was anticipated to be minimal and would affect no environmentally sensitive areas. Some short-term construction- and demolition-related effects would occur in an already highly industrialized setting. These include temporarily disturbing 72,000 square feet of land for the new plating shop and related site preparation activities, constructing a permanent building on part of the area, and using 80 construction personnel over a period of 18 months for site preparation and construction. Demolition effects vary depending on the environmentally suitable option selected, but they could involve as much as 262 cubic yards of concrete rubble and approximately 1600 cubic yards of soil disposed as waste. Either 1600 cubic yards of fresh soil or 1850 yards of clay and fresh soil could be required. Soil erosion would be minimal. Approximately 20 construction personnel would be involved for 12 months in demolition activities.

Not Available

1992-03-01T23:59:59.000Z

374

Experimental constraints on the rheological behavior of olivine at upper mantle conditions  

E-Print Network [OSTI]

Since the discovery of plate tectonics, geophysicists have sought to understand the dynamic system driving the evolution of the earth, both at the surface and in the deep interior. While the deep earth contains far fewer ...

Dixon, Nathaniel Adams

2014-01-01T23:59:59.000Z

375

Bitumen accumulation in Grosmont platform complex, Upper Devonian, Alberta, Canada  

SciTech Connect (OSTI)

The Upper Devonian Grosmont Formation, a broad carbonate platform complex in Alberta, Canada, contains an estimated 300 billion bbl of bitumen. It has been suggested that these vast reserves are related to Lower Cretaceous Athabasca oil sands. Detailed gas chromatographic-mass spectrometric studies of a wide range of biologic marker compounds confirm this suggestion. The Grosmont Formation contains bitumen of similar maturity and source to the Athabasca deposit, but it has been subjected to a greater degree of biodegradation and water washing, possibly as a result of its reservoir rock characteristics. The difference in the degree of biodegradation is manifested by the absence of bicyclic terpanes and by the reduced concentrations of the C/sub 30/ and the 22R epimers of the extended hopanes in the Grosmont bitumen. Also, the greater degree of water washing of the Grosmont bitumen is inferred from the observed distribution of the bicyclic, tricyclic, and tetracyclic terpenoid sulfides, which shows a characteristic loss of the lower molecular weight members in the carbonate bitumen. The correlation established here between the two deposits suggests that if the precursor oil has indeed undergone long-distance migration, the Paleozoic carbonates could have acted as a path for migration. Finally, the observed distribution of steranes in the Grosmont bitumen corresponds to the suggestion that the Mannville Group shales were not the major source rocks of the oil-sand and carbonate bitumen accumulations of northern Alberta. 11 figures, 6 tables.

Hoffmann, C.F.; Strausz, O.P.

1986-09-01T23:59:59.000Z

376

Thermionic converters for an Integrated Solar Upper Stage (ISUS)  

SciTech Connect (OSTI)

The Integrated Solar Upper Stage (ISUS) is a solar bimodal system which combines thermal propulsion and electric power generation in a single integrated system. A thermionic converter was designed and fabricated for the ISUS system. The ISUS thermionic energy converters differ from previous designs, due to the significant changes in operating temperature prior to and during an eclipse, with the emitter temperature increasing from 1,900 K to 2,200 K, and then back again. A complete thermal and electrical model was developed for a planar diode to determine optimum operating dimensions and parameters. The model includes an overall energy balance for the diode, and changes the interelectrode gap spacing due to thermal expansion of the parts as the emitter and/or collector temperatures change. Cesium pressure can be chosen from an external liquid reservoir, an integral reservoir using cesium intercalated into graphite attached to the collector heat pipe, or optimum cesium pressure. With optimum cesium pressure, the maximum efficiency increases from 14% to 16% as the emitter temperature increases from 1,900 K to 2,200 K. The improvement in efficiency is only 2% as the emitter temperature is increased. Optimum efficiency requires an external, actively controlled liquid reservoir.

Anderson, W.G.; Horner-Richardson, K. [Thermacore, Inc., Lancaster, PA (United States)

1996-12-31T23:59:59.000Z

377

Nonlinear analysis of hydraulic buckling instability of ANS involute fuel plates  

SciTech Connect (OSTI)

The hydraulic buckling instability of the involute fuel plates and hydraulic coolant channels in the Advanced Neutron Source (ANS) uranium fission reactor is analyzed nonlinearly using the commercial ABAQUS finite element computer program for the fuel plates in conjunction with a user-written element for the two-dimensional fluid flow in the coolant channels. This methodology has been used for several purposes, including determination of the effect of the aluminum-clad plate plastic behavior and the effect of three-dimensional plate temperature distributions on hydraulic buckling. The present report concentrates on a study of the effect of hydraulic channel imperfections on buckling. The specific form of imperfection considered is an error in fluid channel thickness that is uniform within any one channel but that varies from one channel to the next. The calculated bifurcation (linear buckling) coolant velocity is about 45 m/s, whereas the present design coolant velocity is 25 m/s. At the design velocity, the calculated fluid-induced plate deflection due to the imperfection is somewhat less in magnitude and opposite in direction from the imperfection itself.

Sartory, W.K.

1993-03-01T23:59:59.000Z

378

Characterization of second-phase plates in a Gd5Ge3 intermetallic compound  

SciTech Connect (OSTI)

Rare-earth compounds based on the stoichiometry R5(SixGe1?x)4 (R = rare-earth elements) exhibit many unusual features, including possessing R5(SixGe1?x)3 thin plates which always precipitate from the matrix despite efforts to suppress their formation. In an effort to better understand the unique relationship between these two intermetallic alloy systems, the bulk microstructure of the compound Gd5Ge3 was examined using scanning (SEM) and transmission electron microscopy (TEM) and optical microscopy. Surprisingly, SEM examination revealed a series of thin plates present in the Gd5Ge3 matrix similar to what is seen in Gd5Ge4. TEM observation revealed that a role reversal had occurred, with the thin plates possessing the orthorhombic structure and composition of Gd5Ge4. The orientation relationship between Gd5Ge4 thin plates and the Gd5Ge3 matrix was determined to be Graphic the same relationship reported for Gd5Ge3 plates precipitating from a Gd5Ge4 matrix. However, by exchanging the respective roles of the phases as regards matrix vs. precipitate, the total number of precipitation variants seen can be increased from two to six. The persistence with which these two intermetallic systems co-exist is truly unique. However, understanding exactly the kinetic and thermodynamic conditions that lead to their unique relationship is hampered by the high formation temperatures at which the observed reaction occurs.

Cao, Qing [Ames Laboratory; Chumbley, Leonard S. [Ames Laboratory

2013-05-16T23:59:59.000Z

379

Experimental test results presented for field-damaged orifice meter plates  

SciTech Connect (OSTI)

Tests demonstrate that, unlike other types of meters, there is minimal loss of accuracy with orifice meters even when operational excursions are such that severe damage occurs. Both flange taps and pipe taps effectively have the same general pattern in that the actual coefficient increases with increasing permanent deformation. Of the two types of orifice tap, these data indicate that flange-tapped orifices may be less susceptible to severe deformation. This is probably caused by changes in the local pressure gradients in the vicinity of the plate. Since pipe taps are at such a large distance from the plate, these changes are probably not noticeable due to the turbulent mixing that takes place. With orifice meters, visual inspection of the plates after severe operation is recommended, to tell the user if the plate is beyond specifications. With other types of meters (i.e., other than differential meters) recalibration is the only method of determining if the meter has been affected. Where damage is apparent, the plate (or the meter if it is not of the differential type) should be immediately replaced.

Teyssandier, R.G.; Chisman, W.E.

1984-04-30T23:59:59.000Z

380

Upper Permian vertebrates and their sedimentological context in the South Urals, Russia  

E-Print Network [OSTI]

Upper Permian vertebrates and their sedimentological context in the South Urals, Russia Valentin P,* a Geological Institute of Saratov University, Ulitsa Moskovskaya, 161, Saratov 410075, Russia b Department in the Upper Permian of the Southern Urals area of European Russia. The first sites were found in the 1940s

Benton, Michael

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Simulations of water isotope abundances in the upper troposphere and lower stratosphere and implications  

E-Print Network [OSTI]

fractionation processes. The results indicate that water substance in the upper troposphere does not follow a Rayleigh distillation model due to the presence of condensed phase water. Stratospheric abundances and climate of the upper troposphere and lower stratosphere (UT/LS). It is broadly known that most of the air

Gettelman, Andrew

382

FLUCTUATION IN TRAP-NET CATCHES IN THE UPPER MISSISSIPPI RIVER  

E-Print Network [OSTI]

FLUCTUATION IN TRAP-NET CATCHES IN THE UPPER MISSISSIPPI RIVER if; Marine Biological LabofdiuryKay, Secretary Fish and Wildlife Service, Albert M. Day, Director FLUCTUATION IN TRAP NET CATCHES IN THE UPPER Gear used 3 Methods 5 Statistical considerations 5 Season trends in catch of trap nets 6 Black crappie

383

Novel 16-Channel Receive Coil Array for Accelerated Upper Airway MRI at 3 Tesla  

E-Print Network [OSTI]

Novel 16-Channel Receive Coil Array for Accelerated Upper Airway MRI at 3 Tesla Yoon-Chul Kim,1 a novel 16-channel 3 Tesla receive coil that is highly sensitive to the human upper airway and investigate on articulatory timing may illuminate the general question of how language-specific knowledge is related to motor

Southern California, University of

384

Reduced Order Modeling of the Upper Tropical Pacific Ocean Model Using Proper Orthogonal Decomposition  

E-Print Network [OSTI]

Reduced Order Modeling of the Upper Tropical Pacific Ocean Model Using Proper Orthogonal of a large-scale upper ocean circulation in the tropic Pacific domain. We construct different POD models-scale seasonal variability of the tropic Pacific obtained by the original model is well captured by a low

Aluffi, Paolo

385

Variation of the Thermohaline Structure in the Western Equatorial Pacific Upper Ocean  

E-Print Network [OSTI]

Variation of the Thermohaline Structure in the Western Equatorial Pacific Upper Ocean;Abstract Processes which control the upper ocean thermohaline structure in the western equa- torial Pacific forcing data have indicated that the thick isothermal layer in the western equatorial Pacific is found

Luther, Douglas S.

386

Long-Term Sediment Generation Rates for the Upper Rio Chagres Basin: Implications for Panama  

E-Print Network [OSTI]

Chapter 19 Long-Term Sediment Generation Rates for the Upper Rio Chagres Basin: Implications: We measured in situ-produced cosmogenic 10 Be in 17 sand-sized sediment samples (0.25 to 0.85 mm) to estimate the rate and distribution of sediment generation in the upper Chagres watershed over the last 10

Nichols, Kyle K.

387

PID Admittance Control for an Upper Limb Exoskeleton Wen Yu, Jacob Rosen, Xiaoou Li  

E-Print Network [OSTI]

PID Admittance Control for an Upper Limb Exoskeleton Wen Yu, Jacob Rosen, Xiaoou Li Abstract PID control. Three force sensors in the upper-level send desired trajectories to the lower, a model-free PID type admittance control is applied, whose parameters can be designed by human impedance

Rosen, Jacob

388

Earth Planets Space, 64, 113120, 2012 Upper ionosphere of Mars is not axially symmetrical  

E-Print Network [OSTI]

Earth Planets Space, 64, 113­120, 2012 Upper ionosphere of Mars is not axially symmetrical E to the ionosphere providing momentum and energy transfer to the upper layers of the ionospheric plasma. While dependence rather closely follow the Chapman model (Gurnett et al., 2008; Morgan et al., 2008; Withers, 2009

Gurnett, Donald A.

389

Global empirical wind model for the upper mesosphere/lower thermosphere. I. Prevailing wind  

E-Print Network [OSTI]

Global empirical wind model for the upper mesosphere/lower thermosphere. I. Prevailing wind Y. I. An updated empirical climatic zonally aver- aged prevailing wind model for the upper mesosphere/ lower of monthly mean winds from meteor radar and MF radar measurements at more than 40 stations, well distributed

Paris-Sud XI, Université de

390

HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES,  

E-Print Network [OSTI]

HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES and July 1973 at Shrub and Upper Klawasi mud volcanoes 8 ii #12;HYDROTHERMAL ACTIVITY AND CARBON. Map of diffuse carbon dioxide flow from soils near the summit of Shrub mud volcano 9 TABLES 1

391

Studio optics: Adapting interactive engagement pedagogy to upper-division physics  

E-Print Network [OSTI]

Studio optics: Adapting interactive engagement pedagogy to upper-division physics Christopher M describe the development and implementation of a Studio Optics course for upper-division physics majors course in optics at the junior-senior and first year graduate student level that incorporates the methods

Zollman, Dean

392

Observations on student difficulties with mathematics in upper-division electricity and magnetism  

E-Print Network [OSTI]

Observations on student difficulties with mathematics in upper-division electricity and magnetism Rachel E. Pepper, Stephanie V. Chasteen, Steven J. Pollock, and Katherine K. Perkins Science Education 2011; published 27 March 2012) We discuss common difficulties in upper-division electricity

Colorado at Boulder, University of

393

Crustal and upper mantle structure of southernmost South America inferred from regional waveform inversion  

E-Print Network [OSTI]

Crustal and upper mantle structure of southernmost South America inferred from regional waveform; published 24 January 2003. [1] We determine the crustal and upper mantle structure of southern South America Information Related to Geographic Region: South America; KEYWORDS: niching genetic algorithm, regional

394

GAISUS-1 thermionic converter for the integrated solar upper stage  

SciTech Connect (OSTI)

The Integrated Solar Upper Stage (ISUS) system is a compact orbital transfer vehicle which generates thrust to boost payloads from LEO to higher orbits. It does this by collecting and concentrating solar flux into a sensible thermal storage, graphite receiver which is used to heat hydrogen propellant to temperatures of up to 2500 K. The ISUS receiver also radiates heat into an array of thermionic converters which produce electrical power. The GAISUS-1 thermionic converter is a first generation planar converter designed to produce electrical power when coupled with the ISUS receiver. GAISUS-1 will deliver over 31 W{sub e} at 1900 K. A wrought Re hotshoe accepts radiant heat from the receiver. The back side of the hotshoe forms the emitting surface of the converter. Special attention was paid to optimize the electrical and thermal losses experienced through the sleeve. Triple and single sleeve geometries were thermally modeled and evaluated, resulting in the selection of a single sleeve design. A high temperature metal/ceramic seal isolates the emitter sleeve from the collector. A Nb collector is used and is an integral part of a Nb/Na heat pipe. The heat pipe transports reject heat from the collector surface to a thermal radiator (condenser) portion of the heat pipe. The converter utilizes an integral graphite Cs reservoir. This type of reservoir automatically produces a rise in Cs pressure in response to a rise in emitter/collector temperatures. This Cs pressure feedback mechanism insures adequate Cs coverage of the emitter over a broad range of operating conditions (temperatures).

Begg, L.L.; Heffernan, T.F.; Horner, M.H. [General Atomics, San Diego, CA (United States)

1997-12-31T23:59:59.000Z

395

Evaluating Radiative Closure in the Middle-to-Upper Troposhere  

SciTech Connect (OSTI)

This project had two general objectives. The first is the characterization and improvement of the radiative transfer parameterization in strongly absorbing water vapor bands, as these strongly absorbing bands dictate the clear sky radiative heating rate. The second is the characterization and improvement of the radiative transfer in cirrus clouds, with emphasis on ensuring that the parameterization of the radiative transfer is consistent and accurate across the spectrum. Both of these objectives are important for understanding the radiative processes in the mid-to-upper troposphere. The research on this project primarily involved analysis of data from the First and Second Radiative Heating in Underexplored Bands Campaigns, RHUBC-I and II. This included a climate model sensitivity study using results from RHUBC-I. The RHUBC experiments are ARM-funded activities that directly address the objectives of this research project. A secondary effort was also conducted that investigated the trends in the long-term (~14 year) dataset collected by the Atmospheric Emitted Radiance Interferometer (AERI) at the ARM Southern Great Plains site. This work, which was primarily done by a post-doc at the University of Wisconsin �������¢���������������� Madison under Dr. Turner�������¢����������������s direction, uses the only NIST-traceable instrument at the ARM site that has a well-documented calibration and uncertainty performance to investigate long-term trends in the downwelling longwave radiance above this site.

Tobin, David C; Turner, David D; Knuteson, Robert O

2013-01-02T23:59:59.000Z

396

Quantum States of an Electron Interacting with Various Dielectric Plate Geometries  

E-Print Network [OSTI]

The tunability of binding energies is explored by modulating a finite dielectric slab width in a planar, three dielectric system. After verifying the equivalence of the field method and method of images, three different configurations are explored for possible control of electronic binding energy: A vacuum gap between a Schottky diode, noble gas layers on a metal wall, and an electron confined between two metal plates. In each, varying the width of the finite, middle dielectric was shown to provide control over the binding energy and Bohr radius of the electron. In the case of an electron confined between two plates, it was found that the bound states smoothly connect to the box states as the gap separation was varied. Lastly, forces on the two parallel plates were examined for a possible source of significant repulsion. All numerical calculations were done in MATLAB.

Srihari Sritharan

2013-12-28T23:59:59.000Z

397

Cavitation erosion of silver plated coating at different temperatures and pressures  

SciTech Connect (OSTI)

Cavitation often occurs in inducer pumps used for space rockets. Silver plated coating on the inducer liner faces the damage of cavitation. Therefore, it is important to study about the cavitation erosion resistance for silver plated coating at several operating conditions in the inducer pumps. In this study, the cavitation erosion tests were carried for silver plated coating in deionized water and ethanol at several liquid temperatures (273K–400K) and pressures (0.10MPa–0.48MPa). The mass loss rate is evaluated in terms of thermodynamic parameter ? proposed by Brennen [9], suppression pressure p–p{sub v} (p{sub v}: saturated vapor pressure) and acoustic impedance ?c (?: density and c: sound speed). Cavitation bubble behaviors depending on the thermodynamic effect and the liquid type were observed by high speed video camera. The mass loss rate is formulated by thermodynamic parameter ?, suppression pressure p–p{sub v} and acoustic impedance ?c.

Hattori, Shuji; Motoi, Yoshihiro [Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo, Fuku-shi, Fukui 910-8507 (Japan); Kikuta, Kengo; Tomaru, Hiroshi [IHI Corperation, TOYOSU IHI BUILDING, 1-1, Toyosu 3-chome, Koto-ku, Tokyo 1358710 (Japan)

2014-04-11T23:59:59.000Z

398

Experimental study on corrugated cross-flow air-cooled plate heat exchangers  

SciTech Connect (OSTI)

Experimental study on cross-flow air-cooled plate heat exchangers (PHEs) was performed. The two prototype PHEs were manufactured in a stack of single-wave plates and double-wave plates in parallel. Cooling air flows through the PHEs in a crosswise direction against internal cooling water. The heat exchanger aims to substitute open-loop cooling towers with closed-loop water circulation, which guarantees cleanliness and compactness. In this study, the prototype PHEs were tested in a laboratory scale experiments. From the tests, double-wave PHE shows approximately 50% enhanced heat transfer performance compared to single-wave PHE. However, double-wave PHE costs 30% additional pressure drop. For commercialization, a wide channel design for air flow would be essential for reliable performance. (author)

Kim, Minsung; Baik, Young-Jin; Park, Seong-Ryong; Ra, Ho-Sang [Solar Thermal and Geothermal Research Center, Korea Institute of Energy Research, Daejeon 305-343 (Korea); Lim, Hyug [Research and Development Center, LHE Co., Ltd., Gimhae 621-874 (Korea)

2010-11-15T23:59:59.000Z

399

Vibration control in plates by uniformly distributed PZT actuators interconnected via electric networks  

E-Print Network [OSTI]

In this paper a novel device aimed at controlling the mechanical vibrations of plates by means of a set of electrically-interconnected piezoelectric actuators is described. The actuators are embedded uniformly in the plate wherein they connect every node of an electric network to ground, thus playing the two-fold role of capacitive element in the electric network and of couple suppliers. A mathematical model is introduced to describe the propagation of electro-mechanical waves in the device; its validity is restricted to the case of wave-forms with wave-length greater than the dimension of the piezoelectric actuators used. A self-resonance criterion is established which assures the possibility of electro-mechanical energy exchange. Finally the problem of vibration control in simply supported and clamped plates is addressed; the optimal net-impedance is determined. The results indicate that the proposed device can improve the performances of piezoelectric actuation

Stefano Vidoli; Francesco dell'Isola

2010-07-09T23:59:59.000Z

400

Heat transfer in the plate heat exchanger of an ammonia-synthesis column  

SciTech Connect (OSTI)

The planning and construction of high-capacity synthetic ammonia plants requires the development and fabrication of unique, high unit-power equipment with high technical and economic characteristics. In foreign and domestic practice, tubular heat exchangers with relatively low heat-transfer coefficients are used. Plate heat exchangers are a promising alternative. They are compact and have a high heat energy efficiency and a relatively small metal content. To make an experimental check of the operating capability of a plate heat exchanger under ammonia production conditions, a welded plate heat exchanger was designed for an ammonia synthesis column 800mm in diameter. On prolonged testing (four years), the device provided an autothermal operating mode in the column and the heat transfer coefficient was practically constant for fixed space velocities. Consequently, the heat exchange surface was not contaminated significantly with catalyst dust, confirmed by visual observation of the heat exchanger after disassembly.

Obolentsev, Y.G.; Chus', M.S.; Norobchanskii, O.A.; Teplitshi, Y.S.; Tovazhnyanskii, L.L.

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Multipacting saturation in parallel plate and micro-pulse electron gun  

E-Print Network [OSTI]

A novel parallel plate model is proposed that divided the electron cloud into three parts at saturation, and it is studied in detail using both an analytical approach and PIC (Particle In Cell) code simulations. As one part of the electron cloud, ribbons modes are suggested by tracking the trajectory of individual particle, and the aim of this mode form is to simplify the progress of multipacting effect in the parallel plate so as to be eliminated by optimizing RF parameters. The micro-pulse electron gun (MPG) has demonstrated the potential to address the need for high peak and average current electron beams, hence studying the multipacting in MPG is essential. On the basis of multipacting studying in the parallel plate, it is clear that increasing the cavity voltage is of interest in yielding high quality beams in the gun.

Liao, Lang; Zhao, Minghua

2014-01-01T23:59:59.000Z

402

Evaluation of the feasibility for detecting hidden corrosion damage in multi-layer gusset plates using multiple inspection techniques  

SciTech Connect (OSTI)

Gusset plates are used to connect the members in truss bridges and they are usually inspected using calipers or conventional thickness measurement ultrasonic testing (UT) devices. The damage mechanism of particular concern in gusset plates is corrosion and the regions most susceptible to corrosion damage are on the gusset interior surface where it intersects the chord, diagonal, and vertical members from water collecting at the interfaces. For heavily loaded gusset plates, one or more shingle plates are used to reinforce the gusset plate, creating a multi-layer structure. While the areas with corrosion damage remain near the members on the gusset plate, the shingle plates cover the gusset plate and greatly limit the surface access to the gusset plate, making UT thickness measurement impractical. Because of the critical nature of the gussets, a viable inspection strategy for multi-layer gusset assemblies must be developed. The premise of this research and development effort was to develop viable, field-deployable inspection approaches for this problem area. This paper presents three separate inspection approaches: two ultrasonic-based techniques and one radiographic approach. Each of these techniques was evaluated on a mock-up specimen provided by the Federal Highway Administration (FHWA) that is representative of gusseted connection from a truss bridge.

Cobb, Adam C.; Duffer, Charles E.; Light, Glenn M. [Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238-5166 (United States)

2014-02-18T23:59:59.000Z

403

Studies of a New-type Heterogeneous Composite Carbon Fiber Bipolar Plate Applied to a Portable DMFC stack.  

E-Print Network [OSTI]

??Several disadvantages in general unipolar/bipolar plates are that cost is expensive, weight is heavy and the volume is large. The high compressing pressure is also… (more)

su, syuan-jie

2005-01-01T23:59:59.000Z

404

Multi-gap Resistive Plate Chambers as a Time-of-Flight System for the PHENIX Experiment  

SciTech Connect (OSTI)

In this project a Time-of-Flight detector based on multi-gap resistive plate chambers was built and installed for the PHENIX experiment at RHIC.

Velkovska, Julia [Vanderbilt University] [Vanderbilt University

2013-12-08T23:59:59.000Z

405

Characterization of an Irradiated RERTR-7 Fuel Plate Using Transmission Electron Microscopy  

SciTech Connect (OSTI)

Transmission electron microscopy (TEM) has been used to characterize an irradiated fuel plate with Al-2Si matrix from the RERTR-7 experiment that was irradiated under moderate reactor conditions. The results of this work showed the presence of a bubble superlattice within the U-7Mo grains that accommodated fission gases (e.g., Xe). The presence of this structure helps the U-7Mo exhibit a stable swelling behaviour during irradiation. Furthermore, TEM analysis showed that the Si-rich interaction layers that develop around the fuel particles at the U-7Mo/matrix interface during fuel plate fabrication and irradiation become amorphous during irradiation, and in regions of the interaction layer that have relatively high Si concentrations the fission gas bubbles remain small and contained within the layer but in areas with lower Si concentrations the bubbles grow in size. An important question that remains to be answered about the irradiation behaviour of U-Mo dispersion fuels, is how do more aggressive irradiation conditions affect the behaviour of fission gases within the U-7Mo fuel particles and in the amorphous interaction layers on the microstructural scale that can be characterized using TEM? This paper discusses the results of TEM analysis that was performed on a sample taken from an irradiated RERTR-7 fuel plate with Al-2Si matrix. This plate was exposed to more aggressive irradiation conditions than was the sample taken from the RERTR-6 plate. The microstructural features present within the U-7Mo and the amorphous interaction layers will be discussed. The results of this analysis will be compared to what was observed in the earlier RERTR-6 fuel plate characterization.

J. Gan; D. D. Keiser, Jr.; B. D. Miller; A. B. Robinson; P. Medvedev

2010-03-01T23:59:59.000Z

406

Friction factor data for flat plate tests of smooth and honeycomb surfaces  

E-Print Network [OSTI]

are needed. The purpose of this report is to present the air flow friction factor data for honeycomb surfaces (i.e., 1.57 mm, 0.79 mm and 0.51 mm in cell width, 3.81 mm and 2.29 mm in cell depth) with a flat plate tester. The flat plate tester is designed....2bar, and 17.9bar, respectively and 3 clearances between honeycombs which are 0.25mm, 0.38mm and 0.51mm. These clearance values are representative of actual seals used in the turbomachinary. The following questions wil l be answered: 1) Does...

Ha, Tae Woong

1989-01-01T23:59:59.000Z

407

Electroless nickel and ion-plated protective coatings for silvered glass mirrors  

SciTech Connect (OSTI)

Two methods of protecting second surface silvered glass mirrors from environmental degradation have been evaluated. One method employed silver mirrors overcoated with Al, Ni, 304 stainless steel, Cr, and an Al/Cu alloy prepared by ion-plating. The other method used conventional wet process silver mirrors protected with a thin electroless nickel coating. These mirrors were compared with conventional paint backed silver/copper mirrors after exposure to elevated temperatures and water vapor. The electroless nickel mirrors showed consistently more resistance to these stresses than either the conventional or ion-plated mirrors suggesting that they may provide more durable field service.

Lind, M.A.; Chaudiere, D.A.; Stewart, T.L.

1982-01-01T23:59:59.000Z

408

Quality assurance guidance for laboratory assessment plates in support of EM environmental sampling and analysis activities  

SciTech Connect (OSTI)

This document is one of several guidance documents developed to support the EM (DOE Environmental Restoration and Waste Management) Analytical Services program. Its purpose is to introduce assessment plates that can be used to conduct performance assessments of an organization`s or project`s ability to meet quality goals for analytical laboratory activities. These assessment plates are provided as non-prescriptive guidance to EM-support organizations responsible for collection of environmental data for remediation and waste management programs at DOE facilities. The assessments evaluate objectively all components of the analytical laboratory process to determine their proper selection and use.

Not Available

1994-05-01T23:59:59.000Z

409

Deformation of a thin, elastic plate to a deep parabolic cylinder  

SciTech Connect (OSTI)

Equations governing the elastic deformation of thin plates through large displacements to deep parabolic cylinders are presented and solved. The solution consists of expressions for a spatially distributed surface pressure and uniform rim loads which, when applied to the plate, produce the specified, deep parabolic cylindrical shape. These forming loads are written in dimensionless form for parabolic cylinders of arbitrary focal length and arbitrary rim to rim aperture. Numerical results are presented and limiting values are discussed. The solution and results find immediate application to mechanical forming and adhesive retention of parabolic solar collector components.

Reuter, R.C. Jr.; Wilson, R.K.

1982-02-01T23:59:59.000Z

410

Determination of bypass currents in bipolar plate cells using finite elements  

E-Print Network [OSTI]

to minimize the functional. This equation is equivalent to Laplace's equation with the associated boundary conditions (3), (4), and (5). From Segerlind(3) the functional is given by: y = f /[K( ? ) +K( ? ) ]dA+ 3P2 3P2 A 3x 3y (6) J' [qP + Qh (P-P ) ]d... REFERENCES APPENDIX ~ . ~ ~ ~ ~ ~ VITA iii iv vi vii 13 36 52 53 54 56 107 LIST OF FIGURES. Figure 1. Schematic of a Bipolar Plate Cell Page 2. Schematic of a Bipolar Plate Cell with Protective Current 12 3. Example Problem Setup...

Holmes, Joseph Wayne

2012-06-07T23:59:59.000Z

411

Large Plate Lysimeter Efficiency for Collecting Water Transported from Soil to Ground Water  

SciTech Connect (OSTI)

A large, zero-tension, plate lysimeter (3.05 x 2.13 m) was installed to intercept percolating soil water at Bikini Atoll (11 35'N, 165 25'E), a former nuclear test-site. In two experiments controlled amounts of irrigation water were applied over the lysimeter and leachate water was collected. Evapotranspiration (ET) calculations were made using the Penman-Monteith equation and climate data collected at the atoll. The efficiency of the lysimeter was essentially 100% in contrast to low efficiencies reported for smaller plate lysimeters. Lysimeter design, installation, and water balance results are discussed.

Robison, W; Stone, E L; Hamilton, T

2004-04-14T23:59:59.000Z

412

Dynamic pressure response of water flow between closely spaced roughened flat plates  

E-Print Network [OSTI]

of MASTER OF SCIENCE May 1993 Major Subject: Mechanical Engineering DYNAMIC PRESSURE RESPONSE OF WATER FLOW BETWEEN CLOSELY SPACED ROUGHENED FLAT PLATES A Thesis by JOHN CHARLES HESS Approved as to style and content by: Robert E. DeOtte, Jr. (Co.... S. , Texas A&M University Co-Chairs of Advisory Committee: Dr. R. E. DeOtte, Jr, Dr. G, L, Morrison A flat plate tester was designed and built to determine friction factors and dynamic pressures for water flow over smooth, knurl, and cavity...

Hess, John Charles

2012-06-07T23:59:59.000Z

413

Upper Higgs boson mass bounds from a chirally invariant lattice Higgs-Yukawa model  

E-Print Network [OSTI]

We establish the cutoff-dependent upper Higgs boson mass bound by means of direct lattice computations in the framework of a chirally invariant lattice Higgs-Yukawa model emulating the same chiral Yukawa coupling structure as in the Higgs-fermion sector of the Standard Model. As expected from the triviality picture of the Higgs sector, we observe the upper mass bound to decrease with rising cutoff parameter $\\Lambda$. Moreover, the strength of the fermionic contribution to the upper mass bound is explored by comparing to the corresponding analysis in the pure $\\Phi^4$-theory.

P. Gerhold; K. Jansen

2010-02-23T23:59:59.000Z

414

Mantle transition zone beneath the Caribbean-South American plate boundary and its tectonic implications  

E-Print Network [OSTI]

Mantle transition zone beneath the Caribbean-South American plate boundary and its tectonic seismic network of Venezuela to study the mantle transition zone structure beneath the Caribbean Caribbean, the 410-km is featured by a narrow (200 km EW) 25-km uplift extending in the NS direction around

Niu, Fenglin

415

AIAA 2002-3298 AERODYNAMICS OF TWO SIDE-BY-SIDE PLATES IN HYPERSONIC  

E-Print Network [OSTI]

AIAA 2002-3298 AERODYNAMICS OF TWO SIDE-BY-SIDE PLATES IN HYPERSONIC RAREFIED-GAS FLOWS Vladimir V. Riabov* Rivier College, Nashua, New Hampshire 03060 Abstract Hypersonic rarefied-gas flows near two side have provided valuable information related to physics of hypersonic flows about spacecraft elements

Riabov, Vladimir V.

416

Transient Thermal and Stress Response of A Helium-Cooled Tungsten Plate-Type Divertor  

E-Print Network [OSTI]

.R. Raffray Center for Energy Research University of California, San Diego La Jolla, USA xrwang, which tend to have a negative impact on reliability. The helium-cooled plate- type divertor design maintenance or after the scheduled maintenance because of the different thermal time constants in the front

Raffray, A. René

417

Measurement of the gradient of the Casimir force between a nonmagnetic sphere and a magnetic plate  

E-Print Network [OSTI]

We measured the gradient of the Casimir force between an Au sphere and a plate made of ferromagnetic metal (Ni). It is demonstrated that the magnetic properties influence the force magnitude. This opens prospective opportunities for the control of the Casimir force in nanotechnology and for obtaining Casimir repulsion by using ferromagnetic dielectrics.

A. A. Banishev; C. -C. Chang; G. L. Klimchitskaya; V. M. Mostepanenko; U. Mohideen

2012-05-04T23:59:59.000Z

418

Enhanced HFIR overpower margin through improvements in fuel plate homogeneity inspection  

SciTech Connect (OSTI)

Fuel homogeneity inspection techniques used on the HFIR fuel plates have recently been improved through conversion of the X-ray inspection device to acquire, store, and process data digitally. This paper reports some early results from using the improved equipment and describes future plans for obtaining enhanced fuel thermal performance by exploiting this improved inspection capability.

Rothrock, R.B.; Hale, R.E.; Knight, R.W. [Oak Ridge National Lab., TN (United States); Cheverton, R.D.

1995-09-01T23:59:59.000Z

419

A SOLAR STILL AUGMENTED WITH A FLAT-PLATE COLLECTOR AND A REFLECTOR  

E-Print Network [OSTI]

A SOLAR STILL AUGMENTED WITH A FLAT-PLATE COLLECTOR AND A REFLECTOR A. Saleh A. Badran Mechanical ­ Jordan Amman ­ Jordan e-mail: asaleh@philadelphia.edu.jo e-mail: badran@ju.edu.jo ABSTRACT A solar distillation system was built and tested to study the effect of increasing the solar radiation incident

420

EP464 Fall 2004 Prof. Michael P. Bradley Edge Effects in the Parallel Plate Capacitor  

E-Print Network [OSTI]

EP464 Fall 2004 Prof. Michael P. Bradley Edge Effects in the Parallel Plate Capacitor: The Maxwell y - + + + - #12;EP464 Fall 2004 Prof. Michael P. Bradley and also multiply from x=- to a finite x value. #12;EP464 Fall 2004 Prof. Michael P. Bradley These two equipotential

Saskatchewan, University of

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

MATHEHATICAL NODELING OF THE TEHPERATURE PROFILES AND WELD DILUTION IN ELECTROSLAG WELDING OF STEEL PLATES  

E-Print Network [OSTI]

) ) MATHEHATICAL NODELING OF THE TEHPERATURE PROFILES AND WELD DILUTION IN ELECTROSLAG WELDING describes a calculation procedure for the detailed predic- tion of temperature profiles and weld dilution in the electroslag welding of mild steel plates. The temperature profiles in the liquid slag and the liquid metal

Eagar, Thomas W.

422

Laser-enhanced patterning using photothermal effects: maskless plating and etching  

SciTech Connect (OSTI)

We review our work on laser-enhanced plating and etching with emphasis on the chemical, electrochemical, and thermal mechanisms giving rise to the experimental observations. The metallurgical properties of the deposits and their applications, particularly in the field of microelectronics, are also discussed. The work on laser-enhanced electroplating and electrodeless plating includes high-speed deposition of copper, gold, and nickel by using the argon-ion laser as the source of localized energy. Depsition rates up to 3 orders of magnitude higher have been observed for laser-irradiated regions compared with nonirradiated ones. Mechanisms responsible for the plating enhancement are (1) enhanced chemical and electrochemical kinetics with increased temperature, (2) shifts in the local rest potential with temperature, and (3) local agitation of the solution as a result of large temperature gradients. Applications of these techniques to circuit design and repair as well as to high-speed plating of precious metals onto electrical contact areas of microelectronic circuits are considered. Experiments on high-speed laser-enhanced etching of several dielectrics are also reviewed. Volume removal rates as high as 10/sup 6/ ..mu..m/sup 3//sec for an alumina/TiC ceramic and 10/sup 5/ ..mu..m/sup 3//sec for <111> silicon using KOH as the etchant have been obtained.

von Gutfeld, R.J.

1987-02-01T23:59:59.000Z

423

Microfluidic cartridges preloaded with nanoliter plugs of reagents: an alternative to 96-well plates for screening  

E-Print Network [OSTI]

Microfluidic cartridges preloaded with nanoliter plugs of reagents: an alternative to 96-well equipment and techniques required to dispense nanoliter volumes of fluid. Plug-based microfluidics confines techniques that rely on microfluidic cartridges preloaded with nano- liter plugs of reagents. 96-Well plates

Ismagilov, Rustem F.

424

E-Print Network 3.0 - agar plates stimulate Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

at 37C for 30min, mix with top agar) and plate... .5 or 7.8 150mM NaCl 10mM MgSO4 2mM CaCl2 "Phage" agar ... Source: Albert Einstein College of Medicine, Department of...

425

Analysis of a Plate with a Localized Piezoelectric Patch Scott Hansen  

E-Print Network [OSTI]

Analysis of a Plate with a Localized Piezoelectric Patch Scott Hansen Department of Mathematics detected the so called \\direct" piezoelectric e#11;ect and Lippman who soon after pre- dicted the \\converse" peizoelectric e#11;ect. Since then various mathematical models for piezoelectric materi- als have been proposed

426

Characterization of residual stress relaxation in welded steel plate using TAP-NDE and wavelets  

E-Print Network [OSTI]

residual stresses. Immediately after each oven-curing procedure, laser-generated surface acoustic waves (SAW) were initiated in the welded steel plate using a Q-switched Nd:YAG (neodymium-doped yttrium aluminum garnet) pulsed laser and then acquired using...

Jhun, Choon-Sik

2001-01-01T23:59:59.000Z

427

Combustion air preheating for refinery heaters using plate-type heat exchangers  

SciTech Connect (OSTI)

Combustion air preheating by recovering heat from combustion gases is a cost effective method of increasing the overall thermal efficiency of the refining and petrochemical processes. This paper presents the advantages of the plate-type air preheaters made of smooth plates without extended surfaces. These exchangers provide a relatively high heat transfer coefficient at a relatively low pressure drop, resulting in a flexible and compact design. The air preheater design can easily be integrated into the heater design. Top mounting with natural draft becomes possible for many applications, eliminating the need for I.D. fan and expensive ductwork. The economical extent of heat recovery function of the fuel fired is presented based on practical experience. The use of porcelain enameled (glass coated) plates and of stainless steel materials allows the operation of the air preheater below the acidic and water dew point. Finally the paper presents the experience of the Canadian refineries and petrochemical plants with plate-type heat exchangers used for combustion air preheating.

Dinulescu, M.

1987-01-01T23:59:59.000Z

428

BALLISTIC PROPERTIES OF POLYMER MATRIX COMPOSITES AND CERAMIC PLATES USED IN ARMOR DESIGN  

E-Print Network [OSTI]

BALLISTIC PROPERTIES OF POLYMER MATRIX COMPOSITES AND CERAMIC PLATES USED IN ARMOR DESIGN Mehmet from polymer matrix composites due to lightweight and good ballistic properties. The requirement for protection especially for polymer matrix composites because total back-side deformation (elastic and plastic

Soykasap, Omer

429

Numerical study of the effect of polyurea on the performance of steel plates under blast loads  

E-Print Network [OSTI]

Numerical study of the effect of polyurea on the performance of steel plates under blast loads to blast-like loads. Different thicknesses of the polyurea are considered and the effect of polyurea history: Received 28 February 2013 Available online 13 May 2013 Keywords: Polyurea DH-36 steel Blast

Nemat-Nasser, Sia

430

A Novel Electrodeposition Process for Plating Zn-Ni-Cd Alloys Hansung Kim,a,  

E-Print Network [OSTI]

A Novel Electrodeposition Process for Plating Zn-Ni-Cd Alloys Hansung Kim,a, * Branko N. Popov Sciences Center, Albuquerque, New Mexico 87185-0834, USA Zn-Ni-Cd alloy was electrodeposited from in the literature.7-9 Typical nickel composition in the alloy is approximately 10%, and any further increase

Popov, Branko N.

431

Analytica Chimica Acta 408 (2000) 233240 Disposable test plates with tyrosinase and -glucosidases for  

E-Print Network [OSTI]

Analytica Chimica Acta 408 (2000) 233­240 Disposable test plates with tyrosinase and -glucosidases glycosides (amygdalin and linamarin) are developed. In the presence of dissolved oxygen, tyrosinase catalyzes that are coated by the films containing tyrosinase, a -glucosidase, l-tyrosine, and poly(ethyleneoxide) are also

Yeoh, Hock Hin

432

Palaeomagnetic data from a Mesozoic Philippine Sea Plate ophiolite on Obi Island, Eastern Indonesia  

E-Print Network [OSTI]

Palaeomagnetic data from a Mesozoic Philippine Sea Plate ophiolite on Obi Island, Eastern Indonesia exposed on Obi Island, eastern Indonesia. Until the late Neogene, Obi formed part of the southern tectonic history of eastern Indonesia and northern New Guinea has been dominated by the punctuated

Royal Holloway, University of London

433

Miocene faulting at plate tectonic velocity in the Himalaya of central Nepal  

E-Print Network [OSTI]

Miocene faulting at plate tectonic velocity in the Himalaya of central Nepal Matthew J. Kohna, Tri-Chandra Campus, Ghantaghar, Kathmandu, Nepal, United States Received 7 April 2004; received (MCT) and affiliated faults in central Nepal. Inferred rates were 1.5F0.9 cm/yr (Langtang Thrust, ~19

434

On the effect of perforated plates on the acoustics of annular combustors  

E-Print Network [OSTI]

On the effect of perforated plates on the acoustics of annular combustors E. Gullaud1 CERFACS], acoustic Helmholtz solvers can prove to be sufficient to compute the thermoacoustic modes of a combustor accuracy of these computations, the whole complex geometry of the combustor, including the combustion

Paris-Sud XI, Université de

435

On the effect of perforated plates on the acoustics of annular combustors  

E-Print Network [OSTI]

On the effect of perforated plates on the acoustics of annular combustors E. Gullaud1 CERFACS [9, 10], the thermoacoustic modes of a combustor can be computed more 3 #12;efficiently by using to account for the complex geometry of the combustor, including the combustion chamber, casing, swirlers

Nicoud, Franck

436

Eulerian simulation of the perforation of aluminum plates by nondeforming projectiles  

SciTech Connect (OSTI)

A new algorithm for the treatment of sliding interfaces between solids with or without friction in an Eulerian wavecode is described. The algorithm has been implemented in the two-dimensional version of the CTH code. The code was used to simulate penetration and perforation of aluminum plates by rigid, conical-nosed tungsten projectiles. Comparison with experimental data is provided.

Silling, S.A.

1992-03-01T23:59:59.000Z

437

Global pattern of earthquakes and seismic energy distributions: Insights for the mechanisms of plate tectonics  

E-Print Network [OSTI]

Ã?Ã? Ã? Ã?Ã?Ã? Ã? Ã?Ã? Global pattern of earthquakes and seismic energy distributions: Insights.F., Global pattern of earthquakes and seismic energy distri- butions: Insights for the mechanisms of plate% of the total energy in the first ~50km; only 6% of events dissipates about 20% of the total amount of energy

Stuttgart, Universität

438

Global pattern of earthquakes and seismic energy distributions: Insights for the mechanisms of plate tectonics  

E-Print Network [OSTI]

Global pattern of earthquakes and seismic energy distributions: Insights for the mechanisms October 2011 Keywords: Global seismicity Declustered catalogue Earthquake energy distribution Plate% of the total energy in the first ~50 km; only 6% of events dissipates about 20% of the total amount of energy

Doglioni, Carlo

439

Validating Predicted Rural Corridor Travel Times from an Automated License Plate Recognition System: Oregon's Frontier Project  

E-Print Network [OSTI]

: Oregon's Frontier Project Robert L. Bertini Department of Civil & Environmental Engineering Portland of a corridor travel time prediction system that uses automated license plate recognition­the Frontier Travel Time project. As part of the Frontier project, the Oregon Department of Transportation deployed a video

Bertini, Robert L.

440

Validating Predicted Rural Corridor Travel Times from an Automated License Plate Recognition System: Oregon's Frontier  

E-Print Network [OSTI]

: Oregon's Frontier Project Robert L. Bertini, Matthew Lasky, and Christopher M. Monsere Abstract automated license plate recognition­the Frontier Travel Time project. As part of the Frontier project, Montana, Wyoming, Texas, Washington, Utah, and Oregon) have formed the Frontier pooled-fund study which

Bertini, Robert L.

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Surface Acoustic Waves in an Infinite Plate of Functionally Graded Materials  

E-Print Network [OSTI]

and thermal constants, to improve certain functions like thermal resistance and local strength in variousSurface Acoustic Waves in an Infinite Plate of Functionally Graded Materials Ji Wang, Lehui Zhou, and Jianke Du Piezoelectric Device Laboratory, Mechanics and Materials Science Research Center, School

Wang, Ji

442

Active Sensor Wave Propagation Health Monitoring of Beam and Plate Structures  

E-Print Network [OSTI]

1 Active Sensor Wave Propagation Health Monitoring of Beam and Plate Structures Victor Giurgiutiu, Jingjing Bao, Wei Zhao University of South Carolina ABSTRACT Active sensor wave propagation technique is a relatively new method for in-situ nondestructive evaluation (NDE). Elastic waves propagating in material

Giurgiutiu, Victor

443

U-Mo Foil/Cladding Interactions in Friction Stir Welded Monolithic RERTR Fuel Plates  

SciTech Connect (OSTI)

Interaction between U-Mo fuel and Al has proven to dramatically impact the overall irradiation performance of RERTR dispersion fuels. It is of interest to better understand how similar interactions may affect the performance of monolithic fuel plates, where a uranium alloy fuel is sandwiched between aluminum alloy cladding. The monolithic fuel plate removes the fuel matrix entirely, which reduces the total surface area of the fuel that is available to react with the aluminum and moves the interface between the fuel and cladding to a colder region of the fuel plate. One of the major fabrication techniques for producing monolithic fuel plates is friction stir welding. This paper will discuss the interactions that can occur between the U-Mo foil and 6061 Al cladding when applying this fabrication technique. It has been determined that the time at high temperatures should be limited as much as is possible during fabrication or any post-fabrication treatment to reduce as much as possible the interactions between the foil and cladding. Without careful control of the fabrication process, significant interaction between the U-Mo foil and Al alloy cladding can result. The reaction layers produced from such interactions can exhibit notably different morphologies vis-à-vis those typically observed for dispersion fuels.

D.D. Keiser; J.F. Jue; C.R. Clark

2006-10-01T23:59:59.000Z

444

Natural convection heat transfer from a plate in a semicircular enclosure  

SciTech Connect (OSTI)

The present paper is about characterizing the two-dimensional convective transfer across the air-filled region between a flat plate and a semicircular cylindrical enclosure. In the subject geometry, a long thin plate at uniform temperature is contained coaxially and symmetrically in a long semicircular trough closed at the top and having a uniform but different temperature. Heat flows across the air-filled region between the two by both natural convection and gaseous conduction. The problem of characterizing the free convective component of this heat transfer - that is, the component caused by bulk fluid motion - is treated experimentally by using a heat balance technique, with the measurements being repeated at different pressures, in order to cover a wide Rayleigh number range, from Ra {approximately} 10 to Ra {approximately} 10{sup 8}. Nusselt number versus Rayleigh number plots are presented for each of several combinations of plate-to-trough spacing and tilt angle, and the plots are correlated by equations. The problem of characterizing the conductive component is treated by numerically solving the steady diffusion equation in the air-filled region, and the results are correlated as a function of the spacing and the plate thickness.

Moore, G.A.; Hollands, K.G.T. (Univ. of Waterloo, Ontario (Canada))

1992-02-01T23:59:59.000Z

445

Geometry and seismic properties of the subducting Cocos plate in central Mexico  

E-Print Network [OSTI]

in central Mexico Y. Kim,1 R. W. Clayton,1 and J. M. Jackson1 Received 31 August 2009; revised 22 December occurring in the subducting plate and the overlying crust. Citation: Kim, Y., R. W. Clayton, and J. M near Acapulco and suggested a 9 km thick oceanic crust dipping 2° under the continental margin. Valdes

Jackson, Jennifer M.

446

Wire-Bonding on Inkjet-Printed Silver Pads Reinforced by Electroless Plating for Chip on Flexible Board Packages  

E-Print Network [OSTI]

with pads that are suitable for wire-bonding in electronic packaging. Electroless nickel platingWire-Bonding on Inkjet-Printed Silver Pads Reinforced by Electroless Plating for Chip on Flexible processing. Here, a 1.7 µm thick nickel layer is deposited on top of 600 nm thick printed and sintered silver

Paris-Sud XI, Université de

447

Heat Transfer -1 A satellite in space orbits the sun. The satellite can be approximated as a flat plate with  

E-Print Network [OSTI]

Heat Transfer - 1 A satellite in space orbits the sun. The satellite can be approximated as a flat plate with dimensions and properties given below. (a) Calculate the solar heat flux (W/m2 is at a distance where the solar heat flux (as defined above) is 500 W/m2 , and the flat plate is oriented

Virginia Tech

448

Numerical modeling of effect of polyurea on response of steel plates to impulsive loads in direct pressure-pulse experiments  

E-Print Network [OSTI]

Numerical modeling of effect of polyurea on response of steel plates to impulsive loads in direct is studied, focusing on the effects of the relative position of polyurea with respect to the loading plates subjected to uniform blast loads and compared their predictions with experimental results. Bahei

Nemat-Nasser, Sia

449

An experimental study concerning the effect of temperature on phase velocity in a 3 layered, steel-Polydimethylsiloxane-steel, plate  

E-Print Network [OSTI]

of PDMS, such as elongation and shear moduli, can be varied through temperature. The application of this research is polymer composite curing and extrusion. Using the Lamb formulation for elastic waves in steel plates, a theory for a 3 layered plate...

Sherman, Marcell

1993-01-01T23:59:59.000Z

450

DESIGN AND FABRICATION OF A FLAT-PLATE MULTICHANNEL HE-COOLED REFRACTORY HX FOR DIVERTOR APPLICATIONS  

E-Print Network [OSTI]

) that employs open-cell refractory foam to enhance heat transfer from the heated plate to the helium coolant of research regarding refractory metal based helium- cooled divertors with enhanced heat transfer in plate these in that foam is used as a porous medium for heat transfer enhancement as detailed in previous publications5

Ghoniem, Nasr M.

451

Propagation of Lamb waves in one-dimensional quasiperiodic composite thin plates: A split of phonon band gap  

E-Print Network [OSTI]

Propagation of Lamb waves in one-dimensional quasiperiodic composite thin plates: A split of phonon the propagation of Lamb waves in one-dimensional quasiperiodic composite thin plates made of tungsten B spectra, Raman scattering spectra, and propagating modes of acoustic waves on corrugated surfaces.14

Li, Baowen

452

New Constraints on Carribean Plate Tectonic Evolution Caribbean Basins included in the series Sedimentary Basins of the World, 4 Elsevier  

E-Print Network [OSTI]

North America-Africa and South America-Africa finite rotations North America-South America finite rotations North America-South America plate motions in the Caribbean are Discussion Lesser Antilles to Mid satellite altimetry to compute North America-South America plate motions and their uncertainties. Our

Müller, Dietmar

453

Influence Of Upper Air Conditions On The Patagonia Icefields L. A. Rasmussen, H. Conway, C. F. Raymond  

E-Print Network [OSTI]

Influence Of Upper Air Conditions On The Patagonia Icefields L. A. Rasmussen, H. Conway, C. F, Second Fig ABSTRACT. Upper-air conditions archived in the NCEP-NCAR Reanalysis have been used cannot be determined, so the investigation is limited to examining relative changes in those upper air

Rasmussen, L.A.

454

The edited version has been published in 2004 in N. Hopkins & R. Saad (eds), Upper Egypt, Identity and Change, Cairo,  

E-Print Network [OSTI]

The edited version has been published in 2004 in N. Hopkins & R. Saad (eds), Upper Egypt, Identity tendency, at least since the early 20th c., to describe Upper Egypt (hereafter as-Sa'îd) as a specific these questions and were always stressing "How unknown and unfamiliar and neglected Upper Egypt was for the State

Paris-Sud XI, Université de

455

Upper mantle structure of South America from joint inversion of waveforms and fundamental mode group velocities of Rayleigh waves  

E-Print Network [OSTI]

Upper mantle structure of South America from joint inversion of waveforms and fundamental mode tomographic S wave velocity model for the upper mantle beneath South America is presented. We developed three-dimensional (3-D) upper mantle S velocity model and a Moho depth model for South America, which

van der Lee, Suzan

456

Improving simulations of the upper ocean by inclusion of surface waves in the MellorYamada turbulence scheme  

E-Print Network [OSTI]

mixing. Surface waves can enhance turbulence kinetic energy and mixing of the upper ocean via wave interaction on the MellorYamada scheme and upper ocean thermal structure are examined and compared with each scheme. The behaviors of the MellorYamada scheme, as well as the simulated upper ocean thermal structure

Ezer,Tal

457

The skull of Postosuchus kirkpatricki (Archosauria: Paracrocodyliformes) from the Upper Triassic of the United States  

E-Print Network [OSTI]

9000) were obscured by plaster, wire mesh, and paint duringskull were covered by the plaster and paint used in theHoltz 1994). When plaster was removed from the upper

Weinbaum, Jonathan C.

2011-01-01T23:59:59.000Z

458

Demonstration Sites of Best Management Practices: A Manual for the Upper Etowah River Alliance  

E-Print Network [OSTI]

Demonstration Sites of Best Management Practices: A Manual for the Upper Etowah River Alliance and the Institute of Ecology #12;UERA BMPs Demonstation Sites Manual 2 of 2 Demonstration Sites of Best Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 iii. Best Management Practices

Rosemond, Amy Daum

459

E.2. Electronic Appendix -Food Web Elements of the Fraser River Upper River (above rkm 210)  

E-Print Network [OSTI]

1 E.2. Electronic Appendix - Food Web Elements of the Fraser River Basin Upper River (above rkm 210, but improvements at pulp mills and waste water treatment plant upgrades are thought to have improved water quality

460

INDIANA UNIVERSITY COMPUTER SCIENCE DEPARTMENT PROFESSIONAL MASTER'S DEGREE: UPPER LEVEL GRADUATION REQUIREMENTS WORKSHEET  

E-Print Network [OSTI]

INDIANA UNIVERSITY COMPUTER SCIENCE DEPARTMENT PROFESSIONAL MASTER'S DEGREE: UPPER LEVEL GRADUATION790) Q: (Qualifying exam + 2 approved graduate-level courses (1, 2 above)) Qualifying exam: _______________________ Date:_____ Grade:____ R, S, TH: (Master's research project, Master's software project, University

Indiana University

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Microsoft Word - Upper Jocko River Final Draft CX 7-15-2013.docx  

Broader source: Energy.gov (indexed) [DOE]

Upper Jocko River Property funding Fish and Wildlife Project No. and Contract No.: 2002-003-00, BPA-007168 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021):...

462

Implementation Study of Energy Conservation Recommendations in the Upper Midwest Region  

E-Print Network [OSTI]

The South Dakota State University (SDSU) Industrial Energy Optimization Program (IEOP) and Energy Analysis and Diagnostic Center (EADC) program perform energy audits for industrial companies in the Upper Midwest region of the United States. Each...

Heisinger, K. P.; Bassett, K.; Twedt, M. P.

463

Concurrent tectonic and climatic changes recorded in upper Tortonian sediments from the Eastern Mediterranean  

E-Print Network [OSTI]

evolution in the eastern Mediterranean region. Concurrent tectonic and climatic changes in the MetochiaConcurrent tectonic and climatic changes recorded in upper Tortonian sediments from the Eastern climatic reconstructions reveal substantial changes, especially on the North African continent which

Utrecht, Universiteit

464

E-Print Network 3.0 - ares-i upper stage Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2008 Summary: stage engine would be added to Ares I-Y. For the Upper Stage (US), the production line at MSFC would... engines), eliminating Ares I-Y flight test, accelerating...

465

Improved age control on early Homo fossils from the upper Burgi Member at Koobi Fora, Kenya  

E-Print Network [OSTI]

Improved age control on early Homo fossils from the upper Burgi Member at Koobi Fora, Kenya in Areas 105 and 131 on the Karari Ridge in the eastern Turkana Basin (Kenya). We identify the base

Utrecht, Universiteit

466

Improved age control on early Homo fossils from the upper Burgi Member at Koobi Fora, Kenya  

E-Print Network [OSTI]

1 Improved age control on early Homo fossils from the upper Burgi Member at Koobi Fora, Kenya in Areas 105 and 131 on the Karari Ridge in the eastern Turkana Basin (Kenya). We identify the base

Paris-Sud XI, Université de

467

A Groundwater Dynamic Simulation Model: Application to the Upper San Pedro Basin  

E-Print Network [OSTI]

A Groundwater Dynamic Simulation Model: Application to the Upper San Pedro Basin Report Prepared by using tools such as tracers to determine groundwater travel times and this dynamic simulation modeling

Fay, Noah

468

Pre-Oxidized and Nitrided Stainless Steel Foil for Proton Exchange Membrane Fuel Cell Bipolar Plates: Part 2- Single-Cell Fuel Cell Evaluation of Stamped Plates  

SciTech Connect (OSTI)

Thermal (gas) nitridation of stainless steel alloys can yield low interfacial contact resistance (ICR), electrically conductive and corrosion-resistant nitride containing surface layers (Cr{sub 2}N, CrN, TiN, V{sub 2}N, VN, etc.) of interest for fuel cells, batteries, and sensors. This paper presents results of proton exchange membrane (PEM) single-cell fuel cell studies of stamped and pre-oxidized/nitrided developmental Fe-20Cr-4V weight percent (wt.%) and commercial type 2205 stainless steel alloy foils. The single-cell fuel cell behavior of the stamped and pre-oxidized/nitrided material was compared to as-stamped (no surface treatment) 904L, 2205, and Fe-20Cr-4V stainless steel alloy foils and machined graphite of similar flow field design. The best fuel cell behavior among the alloys was exhibited by the pre-oxidized/nitrided Fe-20Cr-4V, which exhibited {approx}5-20% better peak power output than untreated Fe-20Cr-4V, 2205, and 904L metal stampings. Durability was assessed for pre-oxidized/nitrided Fe-20Cr-4V, 904L metal, and graphite plates by 1000+ h of cyclic single-cell fuel cell testing. All three materials showed good durability with no significant degradation in cell power output. Post-test analysis indicated no metal ion contamination of the membrane electrode assemblies (MEAs) occurred with the pre-oxidized and nitrided Fe-20Cr-4V or graphite plates, and only a minor amount of contamination with the 904L plates.

Toops, Todd J [ORNL; Brady, Michael P [ORNL; Tortorelli, Peter F [ORNL; Pihl, Josh A [ORNL; EstevezGenCell, Francisco [GenCell Corp; Connors, Dan [GenCell Corp; Garzon, Fernando [Los Alamos National Laboratory (LANL); Rockward, Tommy [Los Alamos National Laboratory (LANL); Gervasio, Don [Arizona State University; Kosaraju, S.H. [Arizona State University

2010-01-01T23:59:59.000Z

469

Neutron Diffraction Residual Strain Tensor Measurements Within The Phase IA Weld Mock-up Plate P-5  

SciTech Connect (OSTI)

Oak Ridge National Laboratory (ORNL) has worked with NRC and EPRI to apply neutron and X-ray diffraction methods to characterize the residual stresses in a number of dissimilar metal weld mockups and samples. The design of the Phase IA specimens aimed to enable stress measurements by several methods and computational modeling of the weld residual stresses. The partial groove in the 304L stainless steel plate was filled with weld beads of Alloy 82. A summary of the weld conditions for each plate is provided in Table 1. The plates were constrained along the long edges during and after welding by bolts with spring-loaded washers attached to the 1-inch thick Al backing plate. The purpose was to avoid stress relief due to bending of the welded stainless steel plate. The neutron diffraction method was one of the methods selected by EPRI for non-destructive through thickness strain and stress measurement. Four different plates (P-3 to P-6) were studied by neutron diffraction strain mapping, representing four different welding conditions. Through thickness neutron diffraction strain mappings at NRSF2 for the four plates and associated strain-free d-zero specimens involved measurement along seven lines across the weld and at six to seven depths. The mountings of each plate for neutron diffraction measurements were such that the diffraction vector was parallel to each of the three primary orthogonal directions of the plate: two in-plane directions, longitudinal and transverse, and the direction normal to the plate (shown in left figure within Table 1). From the three orthogonal strains for each location, the residual stresses along the three plate directions were calculated. The principal axes of the strain and stress tensors, however, need not necessarily align with the plate coordinate system. To explore this, plate P-5 was selected for examination of the possibility that the principal axes of strain are not along the sample coordinate system axes. If adequate data could be collected the goal would be to determine the strain tensor's orientation and magnitude of strain along each principle axis direction.

Hubbard, Camden R [ORNL

2011-09-01T23:59:59.000Z

470

Boattail Plates With Non-Rectangular Geometries For Reducing Aerodynamic Base Drag Of A Bluff Body In Ground Effect  

DOE Patents [OSTI]

An apparatus for reducing the aerodynamic base drag of a bluff body having a leading end, a trailing end, a top surface, opposing left and right side surfaces, and a base surface at the trailing end substantially normal to a longitudinal centerline of the bluff body, with the base surface joined (1) to the left side surface at a left trailing edge, (2) to the right side surface at a right trailing edge, and (3) to the top surface at a top trailing edge. The apparatus includes left and right vertical boattail plates which are orthogonally attached to the base surface of the bluff body and inwardly offset from the left and right trailing edges, respectively. This produces left and right vertical channels which generate, in a flowstream substantially parallel to the longitudinal centerline, respective left and right vertically-aligned vortical structures, with the left and right vertical boattail plates each having a plate width defined by a rear edge of the plate spaced from the base surface. Each plate also has a peak plate width at a location between top and bottom ends of the plate corresponding to a peak vortex of the respective vertically-aligned vortical structures.

Ortega, Jason M. (Pacifica, CA); Sabari, Kambiz (Livermore, CA)

2006-03-07T23:59:59.000Z

471

Thin graphite bipolar plate with associated gaskets and carbon cloth flow-field for use in an ionomer membrane fuel cell  

DOE Patents [OSTI]

The present invention comprises a thin graphite plate with associated gaskets and pieces of carbon cloth that comprise a flow-field. The plate, gaskets and flow-field comprise a "plate and gasket assembly" for use in an ionomer membrane fuel cell, fuel cell stack or battery.

Marchetti, George A. (Western Springs, IL)

2003-01-03T23:59:59.000Z

472

Finite Element Analysis of Warpage in Laminated Aluminium Alloy Plates for Machining of Primary Aeronautic Parts  

SciTech Connect (OSTI)

The aim of this paper consists in presenting a method of simulating the warpage in 7xxx series aluminium alloy plates. To perform this simulation finite element software MSC.Patran and MSC.Marc were used. Another result of this analysis will be the influence on material residual stresses induced on the raw material during the rolling process upon the warpage of primary aeronautic parts, fabricated through machining (milling) at Embraer. The method used to determinate the aluminium plate residual stress was Layer Removal Test. The numerical algorithm Modified Flavenot Method was used to convert layer removal and beam deflection in stress level. With such information about the level and profile of residual stresses become possible, during the step that anticipate the manufacturing to incorporate these values in the finite-element approach for modelling warpage parts. Based on that warpage parameter surely the products are manufactured with low relative vulnerability propitiating competitiveness and price.

Reis, A. C.; Moreira Filho, L. A. [ITA - Aeronautic Technological Institute, IEM, Praca Mal. Eduardo Gomes, 50 - Vila das Acacias - S. J. Campos, CEP 1228-900 (Brazil); Menezes, M. A. [ITA - Aeronautic Technological Institute, IEM, Praca Mal. Eduardo Gomes, 50 - Vila das Acacias - S. J. Campos, CEP 1228-900 (Brazil); UNESP - Sao Paulo State University, Ilha Solteira Engineering Faculty, DEM, Av. Brasil, 56 - Centro - Ilha Solteira - SP, CEP 15385-000 (Brazil)

2007-04-07T23:59:59.000Z

473

Discharge dynamics of pin-to-plate dielectric barrier discharge at atmospheric pressure  

SciTech Connect (OSTI)

The discharge dynamics of pin-to-plate dielectric barrier discharge was studied in atmospheric helium at 20 kHz. The discharge was predominately ignited in positive half cycle of applied voltage with sinusoidal waveform. The temporal evolution of the discharge was investigated vertically along the discharge gap and radically on the dielectric surface by time resolved imaging. It is found that a discharge column with a diameter of 2 mm was ignited above the pin electrode and expanded toward a plate electrode. On the dielectric surface with space charge accumulation, plasma disk in terms of plasma ring was formed with radius up to 25 mm. The expansion velocity of plasma ring can reach a hypersonic speed of 3.0 km/s. The ionization wave due to electron diffusion is considered to be the mechanism for plasma ring formation and dynamics.

Sun Liqun [College of Science, Donghua University, Shanghai 201620 (China); Huang, Xiaojiang [College of Science, Donghua University, Shanghai 201620 (China); Member of Magnetic Confinement Fusion Research Center, Ministry of Education of the People's Republic of China, Shanghai 201620 (China); Zhang Jie [College of Science, Donghua University, Shanghai 201620 (China); State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620 (China); Zhang Jing; Shi, J. J. [College of Science, Donghua University, Shanghai 201620 (China); State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620 (China); Member of Magnetic Confinement Fusion Research Center, Ministry of Education of the People's Republic of China, Shanghai 201620 (China)

2010-11-15T23:59:59.000Z

474

Thickness measurement system for transparent plates using dual digital versatile disc (DVD) pickups  

SciTech Connect (OSTI)

A low-cost high-precision thickness measurement system for transparent plates that uses dual digital versatile disc (DVD) pickups is proposed. The two DVD pickups are used as the transmitter and the receiver in the measurement system, respectively. One of the DVD pickups emits a laser to the other DVD pickup (receiver) and projects on the photodiode integrated circuit of the receiver. The transparent plate is placed in the optical path to change the focused point that will affect the focusing error signal (FES) of the receiver. Using the FES, a mathematical model for thickness measurement based on the geometric optical method is developed. The experimental results show that the accuracy is 1.5 {mu}m, and the uncertainty is estimated to be {+-}1.37 {mu}m for the measured thickness of 150{mu}m.

Liu, Chien-Hung; Yeh, Shien-Chang; Huang, Hsueh-Liang

2010-02-01T23:59:59.000Z

475

The Role of Friction Stir Welding in Nuclear Fuel Plate Fabrication  

SciTech Connect (OSTI)

The friction bonding process combines desirable attributes of both friction stir welding and friction stir processing. The development of the process is spurred on by the need to fabricate thin, high density, reduced enrichment fuel plates for nuclear research reactors. The work seeks to convert research and test reactors currently operating on highly enriched uranium fuel to operate on low enriched uranium fuel without significant loss in reactor performance, safety characteristics, or significant increase in cost. In doing so, the threat of global nuclear material proliferation will be reduced. Feasibility studies performed on the process show that this is a viable option for mass production of plate-type nuclear fuel. Adapting the friction stir weld process for nuclear fuel fabrication has resulted in the development of several unique ideas and observations. Preliminary results of this adaptation and process model development are discussed.

D Burkes; P Medvedev; M Chapple; A Amritkar; P Wells; I Charit

2009-02-01T23:59:59.000Z

476

Electroless nickel and ion-plated protective coatings for silvered glass mirrors  

SciTech Connect (OSTI)

A preliminary examination of two methods of protecting second surface silvered glass mirrors from environmental degradation is presented. One method employed silver mirrors overcoated with Al, Ni, 304 stainless steel, Cr, or an Al/Cu alloy prepared by ion-plating. The other method used conventional wet process silver mirrors protected with a thin electroless nickel coating. No attempt was made to optimize the coatings for either method. These experimental mirrors were compared with conventional paint backed silver/copper mirrors after exposure to elevated temperatures and water vapor in order to estimate their relative environmental stability. The electroless nickel mirrors showed consistently more resistance to these stresses than either the conventional or ion-plated mirrors, suggesting that they may provide more durable field service.

Lind, M.A.; Chaudiere, D.A.; Dake, L.S.; Stewart, T.L.

1982-04-01T23:59:59.000Z

477

Steel Plate Shear Walls: Efficient Structural Solution for Slender High-Rise in China  

SciTech Connect (OSTI)

The 329.6 meter tall 74-story Jinta Tower in Tianjin, China, is expected, when complete, to be the tallest building in the world with slender steel plate shear walls used as the primary lateral load resisting system. The tower has an overall aspect ratio close to 1:8, and the main design challenge was to develop an efficient lateral system capable of resisting significant wind and seismic lateral loads, while simultaneously keeping wind induced oscillations under acceptable perception limits. This paper describes the process of selection of steel plate shear walls as the structural system, and presents the design philosophy, criteria and procedures that were arrived at by integrating the relevant requirements and recommendations of US and Chinese codes and standards, and current on-going research.

Mathias, Neville; Long, Eric [Skidmore, Owings and Merrill LLP, One Front Street, San Francisco, CA 94111 (United States); Sarkisian, Mark [Skidmore, Owings and Merrill LLP, One Front Street, San Francisco, CA 94111 (United States); Huang Zhihui [Skidmore, Owings and Merrill LLP, One Front Street, San Francisco, CA 94111 (United States)

2008-07-08T23:59:59.000Z

478

Continious production of exfoliated graphite composite compositions and flow field plates  

DOE Patents [OSTI]

A process of continuously producing a more isotropic, electrically conductive composite composition is provided. The process comprises: (a) continuously supplying a compressible mixture comprising exfoliated graphite worms and a binder or matrix material, wherein the binder or matrix material is in an amount of between 3% and 60% by weight based on the total weight of the mixture; (b) continuously compressing the compressible mixture at a pressure within the range of from about 5 psi or 0.035 MPa to about 50,000 psi or 350 MPa in at least a first direction into a cohered graphite composite compact; and (c) continuously compressing the composite compact in a second direction, different from the first direction, to form the composite composition in a sheet or plate form. The process leads to composite plates with exceptionally high thickness-direction electrical conductivity.

Shi, Jinjun (Columbus, OH); Zhamu, Aruna (Centerville, OH); Jang, Bor Z. (Centerville, OH)

2010-07-20T23:59:59.000Z

479

Acoustic wave device using plate modes with surface-parallel displacement  

DOE Patents [OSTI]

Solid-state acoustic sensors for monitoring conditions at a surface immersed in a liquid and for monitoring concentrations of species in a liquid and for monitoring electrical properties of a liquid are formed by placing interdigital input and output transducers on a piezoelectric substrate and propagating acoustic plate modes therebetween. The deposition or removal of material on or from, respectively, a thin film in contact with the surface, or changes in the mechanical properties of a thin film in contact with the surface, or changes in the electrical characteristics of the solution, create perturbations in the velocity and attenuation of the acoustic plate modes as a function of these properties or changes in them. 6 figs.

Martin, S.J.; Ricco, A.J.

1988-04-29T23:59:59.000Z

480

Broadband asymmetric acoustic transmission by a plate with quasi-periodic surface ridges  

SciTech Connect (OSTI)

In this paper, an acoustic system with broadband asymmetric transmission is designed and fabricated, which consists of a water-immersed aluminum plate engraved with quasi-periodically-patterned ridges on single surface. It demonstrates that when the acoustic waves are launched into the system from the structured side, they can couple into the Lamb modes in the plate efficiently and attain a high transmission; on the contrary, when the waves are incident from the opposite flat side, the coupling is weak, and the transmission is low. Superior to systems with periodic patterning, this quasi-periodically-patterned system has a broad working frequency range due to the collective contributions from the multiple diffractions specific to the structure.

Li, Chunhui; Ke, Manzhu, E-mail: mzke@whu.edu.cn; Ye, Yangtao; Xu, Shengjun; Qiu, Chunyin; Liu, Zhengyou [Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072 (China)

2014-07-14T23:59:59.000Z

Note: This page contains sample records for the topic "upper plate bas" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Flexture plate motion-transfer mechanism, beam-splitter assembly, and interferometer incorporating the same  

DOE Patents [OSTI]

A multiplicity of one-piece flexure plates are assembled in pairs to provide a support system on which a retroreflector may be mounted for reciprocal motion. Combined with balance bodies, the flexure plates provide a support system having portions that are dynamically and statically balanced with one another, irrespective of orientation, so as to thereby immunize the unit against extraneous forces. The motion transfer assembly is especially adapted for use to support a moving retroreflector in a two-arm interferometer that may further include a beamsplitter assembly constructed from a one-piece, integrally formed body, the body having convergent, optically flat planar surfaces of specular reflectance, and means for adjustably mounting a beamsplitter therein. The spectrometer is of modular construction, and employs an integrated clocking sub-assembly as well as a light-weight voice-coil motor. 15 figs.

Carangelo, R.M.; Dettori, M.D.; Grigely, L.J.; Murray, T.C.; Solomon, P.R.; Dine, C.P. Van; Wright, D.D.

1996-01-23T23:59:59.000Z

482

Results mixed from pulsating flow tests of orifice-plate meters  

SciTech Connect (OSTI)

This paper reports that laboratory tests on several commercially available orifice-plate meters for use in pulsating flow indicate that none yields acceptable accuracy. These tests suggested, however, that if the objective of monitoring pulsating flow is to indicate or quantify pulsation magnitudes for comparisons, then at least two instruments are acceptable. Use of such meters, particularly in low flow rate gathering systems, can be a viable alternative to attempting to reduce the intensity (amplitude and frequency) of pulsation by expensive installation and maintenance of chokes and bottles. Phillips Petroleum Co. set out to find a meter that would be sensitive enough to measure pulsating hydrocarbon flows with acceptable accuracy using the orifice plate. Several orifice measurement systems were simultaneously investigated at the Southwest Research Institute, San Antonio (SwRI).

Arasi, J.A. (Phillips Petroleum Co., Tananger (Norway))

1992-10-05T23:59:59.000Z

483

Flexture plate motion-transfer mechanism, beam-splitter assembly, and interferometer incorporating the same  

DOE Patents [OSTI]

A multiplicity of one-piece flexure plates are assembled in pairs to provide a support system on which a retroreflector may be mounted for reciprocal motion. Combined with balance bodies, the flexure plates provide a support system having portions that are dynamically and statically balanced with one another, irrespective of orientation, so as to thereby immunize the unit against extraneous forces. The motion transfer assembly is especially adapted for use to support a moving retroreflector in a two-arm interferometer that may further include a beamsplitter assembly constructed from a one-piece, integrally formed body, the body having convergent, optically flat planar surfaces of specular reflectance, and means for adjustably mounting a beamsplitter therein. The spectrometer is of modular construction, and employs an integrated clocking sub-assembly as well as a light-weight voice-coil motor.

Carangelo, Robert M. (Glastonbury, CT); Dettori, Mark D. (Farmington, CT); Grigely, Lawrence J. (South Windsor, CT); Murray, Terence C. (Winchester, MA); Solomon, Peter R. (West Hartford, CT); Van Dine, C. Peter (Bolton, CT); Wright, David D. (Vershire, VT)

1996-01-01T23:59:59.000Z

484

Proceedings of the flat-plate solar array project research forum on photovoltaic metallization systems  

SciTech Connect (OSTI)

A Photovoltaic Metallization Research Forum, under the sponsorship of the Jet Propulsion Laboratory's Flat-Plate Solar Array Project and the US Department of Energy, was held March 16-18, 1983 at Pine Mountain, Georgia. The Forum consisted of five sessions, covering (1) the current status of metallization systems, (2) system design, (3) thick-film metallization, (4) advanced techniques and (5) future metallization challenges. Twenty-three papers were presented.

None

1983-11-15T23:59:59.000Z

485

NONDESTRUCTIVE EXAMINATION OF FUEL PLATES FOR THE RERTR FUEL DEVELOPMENT EXPERIMENTS  

SciTech Connect (OSTI)

Nuclear fuel is the core component of reactors that is used to produce the neutron flux required for irradiation research purposes as well as commercial power generation. The development of nuclear fuels with low enrichments of uranium is a major endeavor of the RERTR program. In the development of these fuels, the RERTR program uses nondestructive examination (NDE) techniques for the purpose of determining the properties of nuclear fuel plate experiments without imparting damage or altering the fuel specimens before they are irradiated in a reactor. The vast range of properties and information about the fuel plates that can be characterized using NDE makes them highly useful for quality assurance and for analyses used in modeling the behavior of the fuel while undergoing irradiation. NDE is also particularly useful for creating a control group for post-irradiation examination comparison. The two major categories of NDE discussed in this paper are X-ray radiography and ultrasonic testing (UT) inspection/evaluation. The radiographic scans are used for the characterization of fuel meat density and homogeneity as well as the determination of fuel location within the cladding. The UT scans are able to characterize indications such as voids, delaminations, inclusions, and other abnormalities in the fuel plates which are generally referred to as debonds as well as to determine the thickness of the cladding using ultrasonic acoustic microscopy methods. Additionally, the UT techniques are now also being applied to in-canal interim examination of fuel experiments undergoing irradiation and the mapping of the fuel plate surface profile to determine fuel swelling. The methods used to carry out these NDE techniques, as well as how they operate and function, are described along with a description of which properties are characterized.

N.E. Woolstenhulme; S.C. Taylor; G.A. Moore; D.M. Sterbentz

2012-09-01T23:59:59.000Z

486

The distortion of a uniform flow field due to a finite flat plate  

E-Print Network [OSTI]

Advantages of the Application of the Complete Navier-Stokes Equations Synopsis II ANALYSIS The Physical Model The Mathematical Model Governing Differential Fquations Initial and Boundary Conditions 10 III METHOD OF SOLUTION 19 General Method... INTRODUCTION Pur ose and Sco e The purpose of this study is to apply numerical methods to solve the exact partial differential equations governing viscous fluid flow past a finite flat plate. The flow condition studied is that of time-dependent, two...

Zull, Lawrence Michael

1970-01-01T23:59:59.000Z

487

Efficiency determination of resistive plate chambers for fast quasi-monoenergetic neutrons  

E-Print Network [OSTI]

Composite detectors made of stainless steel converters and multigap resistive plate chambers have been irradiated with quasi-monoenergetic neutrons with a peak energy of 175MeV. The neutron detection efficiency has been determined using two different methods. The data are in agreement with the output of Monte Carlo simulations. The simulations are then extended to study the response of a hypothetical array made of these detectors to energetic neutrons from a radioactive ion beam experiment.

M. Röder; Z. Elekes; T. Aumann; D. Bemmerer; K. Boretzky; C. Caesar; T. E. Cowan; J. Hehner; M. Heil; M. Kempe; V. Maroussov; O. Nusair; A. V. Prokofiev; R. Reifarth; M. Sobiella; D. Stach; A. Wagner; D. Yakorev; A. Zilges; K. Zuber

2014-07-10T23:59:59.000Z

488

The transfer of heat and mass to a vertical plate under frosting conditions  

E-Print Network [OSTI]

THE TRAESFPIR OF HEAT . 'ND NASH 10 A VERTICAL PLATE UNDER FROSTING CONDITIONS A Thesis Louis Joseph Poth, Jr. Submitted to the Graduate School of the Agricultural and Nechanioal College of Texas in partial fulfili ment of the requirements... of the Husselt-Grashof correlation for heat transfer. coefficient of saturation temper ture and concen- tration gradient correlation, for small temper- ature difference. ooefficient of frost specific gravity-thermal oonductivity correlation. coefficient...

Poth, Louis Joseph

1960-01-01T23:59:59.000Z

489

Giraffidae from the middle Miocene hominoid locality of andir (Turkey). 1 figure, 2 plates  

E-Print Network [OSTI]

1 Giraffidae from the middle Miocene hominoid locality of �andir (Turkey). 1 figure, 2 plates Denis@ivry.cnrs.fr ** MTA Genel Müdürlügü, Jeoloji Etüdleri Dairesi, 06520 ANKARA, TURKEY Abstract.- The site of �andir has this area and the Siwaliks raises some interesting phylogenetic problems. Key-words.- Middle Miocene, Turkey

Paris-Sud XI, Université de

490

Note: A timing micro-channel plate detector with backside fast preamplifier  

SciTech Connect (OSTI)

A timing micro-channel plate detector with a backside double-channel fast preamplifier was developed to avoid distortion during signal propagation from the anode to the preamplifier. The mechanical and electronic structure is described. The detector including its backside preamplifier is tested by a {sup 241}Am ?-source and a rise time of ?2 ns with an output background noise of 4 mV{sub rms} was achieved.

Wang, Wei [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China) [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); University of Chinese Academy of Sciences, Beijing 100049 (China); School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000 (China); Yu, Deyang, E-mail: d.yu@impcas.ac.cn; Lu, Rongchun; Liu, Junliang; Cai, Xiaohong [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)] [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)

2014-03-15T23:59:59.000Z

491

Experimental investigation of the condensation phenomenon in micro-grooved plates  

E-Print Network [OSTI]

of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content by: Ci. P. Peterson (Chair of Committcc) J. Seyed ? Yagoobi (Member) . A. assan (Member) S Jayasuoya (Head of Department) May 2001 Ma)or Subject: Mechanical... Engineering ABSTRACT Experimental Investigation of the Condensation Phenomenon in Micro ? Grooved Plates. (May 2001) Rodolfo Barron ? Jimenez, B. S. , Universidad de Guanajuato Chair of Advisory Committee: Dr. G. P. Peterson The addition of micro...

Barron-Jimenez, Rodolfo

2012-06-07T23:59:59.000Z

492

Why Insertion Turbine Meters are Replacing Orifice Plates for Steam Flow Measurement  

E-Print Network [OSTI]

WHY INSERTION TURBINE MBTBRS A E REPLACING ORIFICE PLATES FOR STEAM FLOW MEASURE ENT J. J. Rusnak Engineering Measurements Company Longmont, Colorado ABSTRACT Flow measurement is a complex and application related discipline. It borders... to be instrumented quickly, economically and without dis rupting production; and further, these meters had to be accurate in order to be useful in making energy saving decisions. Thus, the entry of the insertion turbine meter for steam in 1975. Since then it has...

Rusnak, J. J.

1983-01-01T23:59:59.000Z

493

Efficient gas sensitivity in mixed bismuth ferrite micro (cubes) and nano (plates) structures  

SciTech Connect (OSTI)

Graphical abstract: Display Omitted Highlights: ? Micro (cubes) structure embedded in nano (plates) of bismuth ferrite was prepared by a chemical method. ? These structures were characterized by XRD and SEM. ? LPG, CO{sub 2} and NH{sub 4} gases were exposed. ? Properties related to gas sensors were measured and reported. -- Abstract: Mixed micro (cubes) and nano (plates) structures of bismuth ferrite (BFO) have been synthesized by a simple and cost-effective wet-chemical method. Structural, morphological and phase confirmation characteristics are measured using X-ray diffraction, field-emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray analysis techniques. The digital FE-SEM photo-images of BFO sample confirmed an incubation of discrete micro-cubes into thin and regularly placed large number of nano-plates. The bismuth ferrite, with mixed structures, films show considerable performance when used in liquefied petroleum (LPG), carbon dioxide (CO{sub 2}) and ammonium (NH{sub 3}) gas sensors application. Different chemical entities in LPG have made it more efficient with higher sensitivity, recovery and response times compared to CO{sub 2} and NH{sub 3} gases. Furthermore, effect of palladium surface treatment on the gas sensitivity and the charge transfer resistances of BFO mixed structures is investigated and reported.

Waghmare, Shivaji D.; Jadhav, Vijaykumar V.; Gore, Shaym K. [Center for Nanomaterials and Energy Devices, School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, Maharashtra (India)] [Center for Nanomaterials and Energy Devices, School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, Maharashtra (India); Yoon, Seog-Joon; Ambade, Swapnil B. [Inorganic Nanomaterials Laboratory, Department of Chemistry, Hanyang University, Seoul 133-1791 (Korea, Republic of)] [Inorganic Nanomaterials Laboratory, Department of Chemistry, Hanyang University, Seoul 133-1791 (Korea, Republic of); Lokhande, B.J. [Department of Physics, Solapur University, Solapur (India)] [Department of Physics, Solapur University, Solapur (India); Mane, Rajaram S., E-mail: rsmane_2000@yahoo.com [Center for Nanomaterials and Energy Devices, School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, Maharashtra (India); Han, Sung-Hwan, E-mail: shhan@hanyang.ac.kr [Inorganic Nanomaterials Laboratory, Department of Chemistry, Hanyang University, Seoul 133-1791 (Korea, Republic of)] [Inorganic Nanomaterials Laboratory, Department of Chemistry, Hanyang University, Seoul 133-1791 (Korea, Republic of)

2012-12-15T23:59:59.000Z

494

Rolling contact fatigue in high vacuum using ion plated nickel-copper-silver solid lubrication  

SciTech Connect (OSTI)

Ion plated, nickel-copper-silver coated steel ball bearings that were tested in rolling contact fatigue (RCF) experiments in high vacuum are presented in this article. ANSI T5 ball bearings were coated with approximately 10 nm of nickel-copper followed by 100 nm of silver using a dc ion plating process. The balls were then tested for RCF in vacuum in the 10{sup -7} Torr range at 130 Hz rotational speed and at 4.1 GPa Hertzian contact stress. The significance of this work is in the extension of RCF testing to an ultrahigh vacuum (UHV) application using silver as a lubricant instead of oil. The effects of pressure and voltage on the ion plating process were also investigated using scanning electron microscopy and RCF life testing in UHV. Test results with a ball size of 5/16 in. in UHV show that deposition at voltages greater than 2.5 kV shortens the RCF life and introduces a unique failure mode. Voltage and pressure fluctuations during the deposition process result in significant thickness monitor measurement errors as well. A regulator control scheme that minimizes the process pressure overshoot is also simulated.

Danyluk, Mike; Dhingra, Anoop [Mechanical Engineering Department, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53211-3029 (United States)

2011-01-15T23:59:59.000Z

495

High Aspect Pattern Formation by Integration of Micro Inkjetting and Electroless Plating  

E-Print Network [OSTI]

This paper reports on formation of high aspect micro patterns on low temperature co-fired ceramic (LTCC) substrates by integrating micro inkjetting with electroless plating. Micro inkjetting was realized by using an inkjetting printer that ejects ink droplets from a printhead. This printhead consists of a glass nozzle with a diameter of 50 micrometers and a piezoelectric transducer that is coated on the nozzle. The silver colloidal solution was inkjetted on a sintered CT800 ceramic substrate, followed by curing at 200 degrees C for 60 minutes. As a result, the silver trace with a thickness of 200 nm was obtained. The substrate, with the ejected silver thin film as the seed layer, was then immersed into a preinitiator solution to coat a layer of palladium for enhancing the deposition of nickel. Electroless nickel plating was successfully conducted at a rate of 0.39 micrometers /min, and the thickness of traces was plated up to 84 micrometers. This study demonstrates that the integration of inkjetting with plat...

Gian, P W; Liang, Y N; Lok, B K; Lu, C W; Ooi, B L

2008-01-01T23:59:59.000Z

496

Redesign of the H-Bridge Switch Plate of the SNS High Voltage Converter Modulator  

SciTech Connect (OSTI)

The 1-MW High Voltage Converter Modulators [1] have operated in excess of 250,000 hours at the Spallation Neutron Source. Increased demands on the accelerator performance require increased modulator reliability. An effort is underway at SLAC National Accelerator Laboratory to redesign the modulator H-bridge switch plate with the goals of increasing reliability and performance [2]. The major difference between the SLAC design and the existing design is the use of press-pack IGBTs. Compared to other packaging options, these IGBTs have been shown to have increased performance in pulsed-power applications, have increased cooling capability, and do not fragment and disassemble during a fault event. An overview of the SLAC switch plate redesign is presented. Design steps including electrical modeling of the modulator and H-bridge, development of an integrated IGBT clamping mechanism, and fault tests are discussed. Experimental results will be presented comparing electrical performance of the SLAC switch plate to the existing switchplate under normal and fault conditions.

Kemp, M.A.; Burkhart, C.; Nguyen, M.N.; /SLAC; Anderson, D.E.; /Oak Ridge

2009-05-07T23:59:59.000Z

497

First On-Sky High Contrast Imaging with an Apodizing Phase Plate  

E-Print Network [OSTI]

We present the first astronomical observations obtained with an Apodizing Phase Plate (APP). The plate is designed to suppress the stellar diffraction pattern by 5 magnitudes from 2-9 lambda/D over a 180 degree region. Stellar images were obtained in the M' band (4.85 microns) at the MMTO 6.5m telescope, with adaptive wavefront correction made with a deformable secondary mirror designed for low thermal background observations. The measured PSF shows a halo intensity of 0.1% of the stellar peak at 2 lambda/D (0.36 arcsec), tapering off as r^{-5/3} out to radius 9 lambda/D. Such a profile is consistent with residual errors predicted for servo lag in the AO system. We project a 5 sigma contrast limit, set by residual atmospheric fluctuations, of 10.2 magnitudes at 0.36 arcsec separation for a one hour exposure. This can be realised if static and quasi-static aberrations are removed by differential imaging, and is close to the sensitivity level set by thermal background photon noise for target stars with M'>3. The advantage of using the phase plate is the removal of speckle noise caused by the residuals in the diffraction pattern that remain after PSF subtraction. The APP gives higher sensitivity over the range 2-5 lambda/D compared to direct imaging techniques.

Matthew A. Kenworthy; Johanan L. Codona; Philip M. Hinz; J. Roger P. Angel; Ari Heinze; Suresh Sivanandam

2007-02-12T23:59:59.000Z

498

Protective nitride formation on stainless steel alloys for proton exchange membrane fuel cell bipolar plates  

SciTech Connect (OSTI)

Gas nitridation has shown excellent promise to form dense, electrically conductive and corrosion-resistant Cr-nitride surface layers on Ni-Cr base alloys for use as proton exchange membrane fuel cell (PEMFC) bipolar plates. Due to the high cost of nickel, Fe-base bipolar plate alloys are needed to meet the cost targets for many PEMFC applications. Unfortunately, nitridation of Fe-base stainless steel alloys typically leads to internal Cr-nitride precipitation rather than the desired protective surface nitride layer formation, due to the high permeability of nitrogen in these alloys. This paper reports the finding that it is possible to form a continuous, protective Cr-nitride (CrN and Cr{sub 2}N) surface layer through nitridation of Fe-base stainless steel alloys. The key to form a protective Cr-nitride surface layer was found to be the initial formation of oxide during nitridation, which prevented the internal nitridation typically observed for these alloys, and resulted in external Cr-nitride layer formation. The addition of V to the alloy, which resulted in the initial formation of V{sub 2}O{sub 3}-Cr{sub 2}O{sub 3}, was found to enhance this effect, by making the initially formed oxide more amenable to subsequent nitridation. The Cr-nitride surface layer formed on model V-modified Fe-27Cr alloys exhibited excellent corrosion resistance and low interfacial contact resistance under simulated PEMFC bipolar plate conditions.

Yang, Bing [ORNL; Brady, Michael P [ORNL; Wang, Heli [National Renewable Energy Laboratory (NREL); Turner, John [National Renewable Energy Laboratory (NREL); More, Karren Leslie [ORNL; Young, David J [ORNL; Tortorelli, Peter F [ORNL; Payzant, E Andrew [ORNL; Walker, Larry R [ORNL

2007-01-01T23:59:59.000Z

499

Dynamic pull-in of parallel plate and torsional electrostatic MEMS actuators.  

SciTech Connect (OSTI)

An analysis of the dynamic characteristics of pull-in for parallel-plate and torsional electrostatic actuators is presented. Traditionally, the analysis for pull-in has been done using quasi-static assumptions. However, it was recently shown experimentally that a step input can cause a decrease in the voltage required for pull-in to occur. We propose an energy-based solution for the step voltage required for pull-in that predicts the experimentally observed decrease in the pull-in voltage. We then use similar energy techniques to explore pull-in due to an actuation signal that is modulated depending on the sign of the velocity of the plate (i.e., modulated at the instantaneous mechanical resonant frequency). For this type of actuation signal, significant reductions in the pull-in voltage can theoretically be achieved without changing the stiffness of the structure. This analysis is significant to both parallel-plate and torsional electrostatic microelectromechanical systems (MEMS) switching structures where a reduced operating voltage without sacrificing stiffness is desired, as well as electrostatic MEMS oscillators where pull-in due to dynamic effects needs to be avoided.

Nielson, Gregory N.; Barbastathis, George (Massachusetts Institute of Technology, Cambridge, MA)

2005-02-01T23:59:59.000Z

500

Depositional facies of hydrocarbon reservoirs of upper Cherokee Group, Anadarko basin  

SciTech Connect (OSTI)

The Desmoinesian upper Cherokee Group sequence in the Anadarko basin is the subsurface equivalent of the Cabaniss Group of eastern Oklahoma. This sequence includes the Pink limestone, Skinner sandstone, Verdigris limestone, and Prue sandstone intervals. The upper Skinner sandstone, which has not been well documented, is an important hydrocarbon-producing reservoir in the Anadarko basin. The Skinner sandstone is represented by channel, delta-front-prodelta, and shallow marine facies. Channel facies consist of a primary elongate trend extending 40 mi southeast-northwest across Custer and Roger Mills Counties, Oklahoma. Several small secondary channels trending northeast-southwest were also observed. Active channel-fill sequences in the primary trend exceed 100 ft in thickness and represent the major producing reservoir of the upper Skinner sandstone. Delta-front-prodelta sequences are dominated by shale and interbedded sandstone-shale units. Shallow marine facies consist of massive coarsening-upward units that reach 300 ft in thickness. This facies belt is broad and slightly elongated, approximately 12 mi wide by 20 mi long, and trends northeast-southwest somewhat normal to channel facies orientation. Lithologically, the upper Skinner channel sandstone is feldspathic litharenite with abundant feldspar and quartz overgrowth. Both primary and secondary porosity were observed in the upper Skinner sandstone. Secondary porosity evolved mainly from dissolution of feldspar and lithic fragments. However, extensive cementation in the shallow marine facies has reduced porosity to negligible amounts and consequently reduced reservoir quality.

Puckette, J.O.; Al-Shaieb, Z. (Oklahoma State Univ., Stillwater (USA))

1989-08-01T23:59:59.000Z