National Library of Energy BETA

Sample records for flow diagram image

  1. TEP process flow diagram

    SciTech Connect (OSTI)

    Wilms, R Scott; Carlson, Bryan; Coons, James; Kubic, William

    2008-01-01

    This presentation describes the development of the proposed Process Flow Diagram (PFD) for the Tokamak Exhaust Processing System (TEP) of ITER. A brief review of design efforts leading up to the PFD is followed by a description of the hydrogen-like, air-like, and waterlike processes. Two new design values are described; the mostcommon and most-demanding design values. The proposed PFD is shown to meet specifications under the most-common and mostdemanding design values.

  2. Non--Atomic Components of Data Flow Diagrams: Stores, Persistent Flows,

    E-Print Network [OSTI]

    Symanzik, JŁrgen

    Non--Atomic Components of Data Flow Diagrams: Stores, Persistent Flows, and Tests for Empty Flows J NON--ATOMIC COMPONENTS OF DATA FLOW DIAGRAMS: STORES, PERSISTENT FLOWS, AND TESTS FOR EMPTY FLOWS of these common features of traditional Data Flow Diagrams elevates the expressive power of FDFD's, or whether

  3. Sankey Diagram of Energy Flow in U.S. Manufacturing | Department...

    Office of Environmental Management (EM)

    Energy Flow in U.S. Manufacturing Sankey Diagram of Energy Flow in U.S. Manufacturing The U.S. Manufacturing Sector Sankey diagram below shows the amount of total primary energy in...

  4. Sankey Diagram of Nonprocess Energy Flow in U.S. Manufacturing...

    Energy Savers [EERE]

    Nonprocess Energy Flow in U.S. Manufacturing Sector Sankey Diagram of Nonprocess Energy Flow in U.S. Manufacturing Sector The Nonprocess Energy Sankey diagram below shows inputs of...

  5. Energy Flow Diagram | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    Science for Energy Flow Energy Flow Diagram Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding Opportunities Basic Energy...

  6. Using the depth-velocity-size diagram to interpret equilibrium bed configurations in river flows

    SciTech Connect (OSTI)

    Southard, J.B. (Massachusetts Institute of Technology, Cambridge, MA (USA))

    1990-05-01

    Data from flume studies that report equilibrium bed configuration as well as water temperature, flow depth, flow velocity, and sediment size were used to develop the best approximation to the relationships among the various bed phases (ripples, dunes, lower regime plane bed, upper regime plane bed, and antidunes) in a three-axis graph (depth-velocity-size diagram) with dimensionless measures of mean flow depth, mean flow velocity, and sediment size along the axis. Relationships are shown in a series of depth-velocity and velocity-size sections through the diagram. Boundaries between bed-phase stability fields are drawn as surfaces that minimize, misplacement of data points. A large subset of the data, for which reliable values of bed shear stress are reported, was also used to represent the stability relationships in a graph of dimensionless boundary shear stress against dimensionless sediment size, but with results less useful for fluvial flow interpretation. The diagram covers about one order of magnitude in flow depth. To be useful for river flows, the diagram must be extrapolated in flow depth by about one more order of magnitude, but this is not a serious problem for approximate work. The depth-velocity-size diagram permits prediction of equilibrium bed configuration in river flows when the approximate flow depth and mean flow velocity are known. Because the diagram is essentially dimensionless, the effect of water temperature (via the fluid viscosity) on the bed configuration is easily accounted for by use of the diagram.

  7. Rapid granular flows on a rough incline: phase diagram, gas transition, and effects of air drag

    E-Print Network [OSTI]

    Tamas Borzsonyi; Robert E. Ecke

    2006-11-16

    We report experiments on the overall phase diagram of granular flows on an incline with emphasis on high inclination angles where the mean layer velocity approaches the terminal velocity of a single particle free falling in air. The granular flow was characterized by measurements of the surface velocity, the average layer height, and the mean density of the layer as functions of the hopper opening, the plane inclination angle and the downstream distance x of the flow. At high inclination angles the flow does not reach an x-invariant steady state over the length of the inclined plane. For low volume flow rates, a transition was detected between dense and very dilute (gas) flow regimes. We show using a vacuum flow channel that air did not qualitatively change the phase diagram and did not quantitatively modify mean flow velocities of the granular layer except for small changes in the very dilute gas-like phase.

  8. The state diagram for cell adhesion under flow: Leukocyte rolling and firm adhesion

    E-Print Network [OSTI]

    Tees, David F.J.

    The state diagram for cell adhesion under flow: Leukocyte rolling and firm adhesion Kai-Chien Chang, Philadelphia, PA, and approved July 31, 2000 (received for review May 24, 2000) Leukocyte adhesion under flow mediated by selectins) followed by firm adhesion (primarily me- diated by integrins). Using a computational

  9. A Phase Diagram Unifies Energy Dissipation, Kinetics, and Rheology in Inertial Granular Flows

    E-Print Network [OSTI]

    E. DeGiuli; J. N. McElwaine; M. Wyart

    2015-09-11

    Flows of hard granular materials depend strongly on the interparticle friction coefficient $\\mu_p$ and on the inertial number ${\\cal I}$, which characterizes proximity to the jamming transition where flow stops. Guided by numerical simulations, we derive the phase diagram of dense inertial flow of spherical particles, finding three regimes for $10^{-4} \\lesssim {\\cal I} \\lesssim 0.1$: frictionless, frictional sliding, and rolling. These are distinguished by the dominant means of energy dissipation, changing from collisional to sliding friction, and back to collisional, as $\\mu_p$ increases from zero at constant ${\\cal I}$. The three regimes differ in their kinetics and rheology; in particular, the velocity fluctuations and the stress anisotropy both display non-monotonic behavior with $\\mu_p$, corresponding to transitions between the three regimes of flow. We characterize the scaling properties of these regimes, show that energy balance yields scaling relations for each of them, and explain why friction qualitatively affects flow.

  10. Flow Maps from GONG Ring Diagrams R. Komm, J. Bolding, T. Corbard 1 , F. Hill, R. Howe, and C. Toner

    E-Print Network [OSTI]

    Corbard, Thierry

    Flow Maps from GONG Ring Diagrams R. Komm, J. Bolding, T. Corbard 1 , F. Hill, R. Howe, and C d'Azur, F­06304 Nice Cedex 4 Introduction y We show first results from GONG++ observations covering Carrington rotation 1988 (2002/3/30 ­ 2002/4/26) analyzed with a ring­diagram technique as part of the GONG

  11. Evolution of Near-surface Flows Inferred from High-resolution Ring-diagram Analysis

    E-Print Network [OSTI]

    Bogart, Richard S; Baldner,; Basu, Sarbani

    2015-01-01

    Ring-diagram analysis of acoustic waves observed at the photosphere can provide a relatively robust determination of the sub-surface flows at a particular time under a particular region. The depth of penetration of the waves is related to the size of the region, hence the depth extent of the measured flows is inversely proportional to the spatial resolution. Most ring-diagram analysis has focused on regions of extent ~15{\\deg} (180 Mm) or more in order to provide reasonable mode sets for inversions. HMI data analysis also provides a set of ring fit parameters on a scale three times smaller. These provide flow estimates for the outer 1% (7 Mm) of the Sun only, with very limited depth resolution, but with spatial resolution adequate to map structures potentially associated with the belts and regions of magnetic activity. There are a number of systematic effects affecting the determination of flows from local helioseismic analysis of regions over different parts of the observable disk, not all well understood. I...

  12. Development of a diffraction imaging flow cytometer

    E-Print Network [OSTI]

    , of the laminar flow and the sheath fluid usually has a large curvature and refrac- tive index difference. Often morphology of a particle. We present a jet-in-fluid design of flow chamber for acquisition of clear diffraction images in a laminar flow. Diffraction images of polystyrene spheres of different diameters were

  13. Application of Neutron Imaging and Scattering to Fluid Flow and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Application of Neutron Imaging and Scattering to Fluid Flow and Fracture in EGS Environments Application of Neutron Imaging and Scattering to Fluid Flow and Fracture in EGS...

  14. Fracture Network and Fluid Flow Imaging for EGS Applications...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Network and Fluid Flow Imaging for EGS Applications from Multi-Dimensional Electrical Resistivity Structure Fracture Network and Fluid Flow Imaging for EGS Applications from...

  15. Chapter 8 Module Structuring While task structuring requires a designer to search data/control flow diagrams for

    E-Print Network [OSTI]

    Mills, Kevin

    Chapter 8 Module Structuring While task structuring requires a designer to search data/control flow diagrams for threads of control, module structuring requires the designer to take an orthogonal view in Chapter 4, and the state of the evolving, software design. The main information output from the module-structuring

  16. Quantitative imaging of turbulent and reacting flows

    SciTech Connect (OSTI)

    Paul, P.H. [Sandia National Laboratories, Livermore, CA (United States)

    1993-12-01

    Quantitative digital imaging, using planar laser light scattering techniques is being developed for the analysis of turbulent and reacting flows. Quantitative image data, implying both a direct relation to flowfield variables as well as sufficient signal and spatial dynamic range, can be readily processed to yield two-dimensional distributions of flowfield scalars and in turn two-dimensional images of gradients and turbulence scales. Much of the development of imaging techniques to date has concentrated on understanding the requisite molecular spectroscopy and collision dynamics to be able to determine how flowfield variable information is encoded into the measured signal. From this standpoint the image is seen as a collection of single point measurements. The present effort aims at realizing necessary improvements in signal and spatial dynamic range, signal-to-noise ratio and spatial resolution in the imaging system as well as developing excitation/detection strategies which provide for a quantitative measure of particular flowfield scalars. The standard camera used for the study is an intensified CCD array operated in a conventional video format. The design of the system was based on detailed modeling of signal and image transfer properties of fast UV imaging lenses, image intensifiers and CCD detector arrays. While this system is suitable for direct scalar imaging, derived quantities (e.g. temperature or velocity images) require an exceptionally wide dynamic range imaging detector. To apply these diagnostics to reacting flows also requires a very fast shuttered camera. The authors have developed and successfully tested a new type of gated low-light level detector. This system relies on fast switching of proximity focused image-diode which is direct fiber-optic coupled to a cooled CCD array. Tests on this new detector show significant improvements in detection limit, dynamic range and spatial resolution as compared to microchannel plate intensified arrays.

  17. A Stability Diagram for Dense Suspensions of Model Colloidal Al2O3-Particles in Shear Flow

    E-Print Network [OSTI]

    Martin Hecht; Jens Harting; Hans J. Herrmann

    2007-03-09

    In Al2O3 suspensions, depending on the experimental conditions very different microstructures can be found, comprising fluid like suspensions, a repulsive structure, and a clustered microstructure. For technical processing in ceramics, the knowledge of the microstructure is of importance, since it essentially determines the stability of a workpiece to be produced. To enlighten this topic, we investigate these suspensions under shear by means of simulations. We observe cluster formation on two different length scales: the distance of nearest neighbors and on the length scale of the system size. We find that the clustering behavior does not depend on the length scale of observation. If inter-particle interactions are not attractive the particles form layers in the shear flow. The results are summarized in a stability diagram.

  18. ANUDlSiTM-40 Load Flow Analysis: Base Cases, Data, Diagrams, and Results

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal GasAdministrationTechnicalTechnicalScience.govWSRC-MS-g8-00318ANUDlSiTM-40 Load Flow

  19. Flow visualization around cylinders in a channel flow using Particle Image Velocimetry†

    E-Print Network [OSTI]

    Martinez, Ramiro Serna

    1994-01-01

    The objective of the undertaken study was to apply state-of the-art Particle Image Velocimetry to measure full field turbulent flow around cylinders, starting with one cylinder and eventually to a quad cylinder arrangement. Particle Image...

  20. Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow

    E-Print Network [OSTI]

    Marchese, Francis

    Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow Flow

  1. BIOLUMINESCENCE ENHANCEMENT THROUGH FUSION OF OPTICAL IMAGING AND CINEMATIC VIDEO FLOW

    E-Print Network [OSTI]

    Paragios, Nikos

    BIOLUMINESCENCE ENHANCEMENT THROUGH FUSION OF OPTICAL IMAGING AND CINEMATIC VIDEO FLOW Mickael a novel approach to perform fusion of cinematic flow and optical imaging towards enhancement. Implicit silhouette and landmark matching are considered for the cinematic images and are combined

  2. Flow Imaging Using MRI: Quantification and Analysis†

    E-Print Network [OSTI]

    Jiraraksopakun, Yuttapong

    2010-07-14

    ) orthogonal one-dimensional displacement from all tag detected points [51]. Most of these motion analyses has been developed extensively to visualize or to assess cardiac motion. In analysis of heart motion, the myocardial contours at left ventricle (LV... and to automatically track both in-plane and through-plane displacements in three dimensions from a single image plane using a modified SF-CSPAMM [88]. Based on thin slice thickness and phase invariance conditions, the method (zHARP) can directly track the three-dimensional...

  3. Cerebral blood flow imaging with thallium-201 diethyldithiocarbamate SPECT

    SciTech Connect (OSTI)

    van Royen, E.A.; de Brune, J.F.H.; Hill, T.C.; Vyth, A.; Limburg, M.; Byse, B.L.; O'Leary, D.H.; de Jong, J.M.; Hijdra, A.; van der Schoot, J.B.

    1987-02-01

    Thallium-201 diethyldithiocarbamate ((/sup 201/TI)DDC) was studied in humans as an agent for cerebral blood flow imaging. Brain uptake proved to be complete 90 sec after injection with no appreciable washout or redistribution for hours. Intracarotid injection suggested an almost 100% extraction during the first passage. Whole-body distribution studies demonstrated a brain uptake of 4.3% of the dose compared with 0.9% for (/sup 201/TI)chloride. No differences were found in the distribution of (/sup 201/TI)DDC versus (/sup 201/TI)chloride in other organs. After the injection of 3 mCi /sup 201/TI, good quality single photon emission computed tomographic (SPECT) images of the brain were obtained with both a rotating gamma camera and a multidetector system. In ischemic brain disease, perfusion defects were easily demonstrated. We conclude that (/sup 201/TI)DDC is a suitable radiopharmaceutical for SPECT studies of cerebral blood flow.

  4. Model-Based Multi-view Fusion of Cinematic Flow and Optical Imaging

    E-Print Network [OSTI]

    Paragios, Nikos

    Model-Based Multi-view Fusion of Cinematic Flow and Optical Imaging Mickael Savinaud1,2,3 , Martin-view Fusion of Cinematic Flow and Optical Imaging 669 optical imaging devices are now able to image does not enable cinematic acquisition. The use of temporal information involves either animal tracking

  5. Hopper System Diagram

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

    System Diagram System Diagram Diagram of IO architecture on Hopper Diagram of external IO services on the Hopper system Last edited: 2011-04-14 15:11:1...

  6. Bio-inspired MEMS Pressure and Flow Sensors for Underwater Navigation and Object Imaging "

    E-Print Network [OSTI]

    Bio-inspired MEMS Pressure and Flow Sensors for Underwater Navigation and Object Imaging " MIT. - A. G. P. Kottapalli et. al., "Liquid crystal polymer membrane MEMS sensor for flow rate and flow for waterproofing. Fabrication Kayak Testing Commercial Sensors (Reference) MEMS Sensor When mounted on the side

  7. Application of a single step temporal imaging of magnetic induction tomography for metal flow visualization

    E-Print Network [OSTI]

    Adler, Andy

    and sensing coils. MIT has potential in visualization of metal flow for continuous casting mainly because of spatio-temporal resolution using the real metal flow in continuous casting. Results are comparedApplication of a single step temporal imaging of magnetic induction tomography for metal flow

  8. A study on a lobed jet mixing flow by using stereoscopic particle image velocimetry technique

    E-Print Network [OSTI]

    Hu, Hui

    A study on a lobed jet mixing flow by using stereoscopic particle image velocimetry technique Hui in the present study to conduct three-dimensional measurements of air jet flows exhausted from a lobed nozzle distributions were used to analyze the characteristics of the mixing process in the lobed jet flow compared

  9. Deep ACS Imaging in the Globular Cluster NGC 6397: The Cluster Color Magnitude Diagram and Luminosity Function

    E-Print Network [OSTI]

    Richer, Harvey B; Hurley, Jarrod; Anderson, Jay; King, Ivan; Davis, Saul; Fahlman, Gregory G; Hansen, Brad M S; Kalirai, Jason; Paust, Nathaniel; Rich, R Michael; Shara, Michael M

    2007-01-01

    We present the CMD from deep HST imaging in the globular cluster NGC 6397. The ACS was used for 126 orbits to image a single field in two colors (F814W, F606W) 5 arcmin SE of the cluster center. The field observed overlaps that of archival WFPC2 data from 1994 and 1997 which were used to proper motion (PM) clean the data. Applying the PM corrections produces a remarkably clean CMD which reveals a number of features never seen before in a globular cluster CMD. In our field, the main sequence stars appeared to terminate close to the location in the CMD of the hydrogen-burning limit predicted by two independent sets of stellar evolution models. The faintest observed main sequence stars are about a magnitude fainter than the least luminous metal-poor field halo stars known, suggesting that the lowest luminosity halo stars still await discovery. At the bright end the data extend beyond the main sequence turnoff to well up the giant branch. A populous white dwarf cooling sequence is also seen in the cluster CMD. Th...

  10. Deep ACS Imaging in the Globular Cluster NGC 6397: The Cluster Color Magnitude Diagram and Luminosity Function

    E-Print Network [OSTI]

    Harvey B. Richer; Aaron Dotter; Jarrod Hurley; Jay Anderson; Ivan King; Saul Davis; Gregory G. Fahlman; Brad M. S. Hansen; Jason Kalirai; Nathaniel Paust; R. Michael Rich; Michael M. Shara

    2007-08-29

    We present the CMD from deep HST imaging in the globular cluster NGC 6397. The ACS was used for 126 orbits to image a single field in two colors (F814W, F606W) 5 arcmin SE of the cluster center. The field observed overlaps that of archival WFPC2 data from 1994 and 1997 which were used to proper motion (PM) clean the data. Applying the PM corrections produces a remarkably clean CMD which reveals a number of features never seen before in a globular cluster CMD. In our field, the main sequence stars appeared to terminate close to the location in the CMD of the hydrogen-burning limit predicted by two independent sets of stellar evolution models. The faintest observed main sequence stars are about a magnitude fainter than the least luminous metal-poor field halo stars known, suggesting that the lowest luminosity halo stars still await discovery. At the bright end the data extend beyond the main sequence turnoff to well up the giant branch. A populous white dwarf cooling sequence is also seen in the cluster CMD. The most dramatic features of the cooling sequence are its turn to the blue at faint magnitudes as well as an apparent truncation near F814W = 28. The cluster luminosity and mass functions were derived, stretching from the turn off down to the hydrogen-burning limit. It was well modeled with either a very flat power-law or a lognormal function. In order to interpret these fits more fully we compared them with similar functions in the cluster core and with a full N-body model of NGC 6397 finding satisfactory agreement between the model predictions and the data. This exercise demonstrates the important role and the effect that dynamics has played in altering the cluster IMF.

  11. Automation of Feynman Diagram Evaluation

    E-Print Network [OSTI]

    M. Tentyukov; J. Fleischer

    1998-02-04

    A C-program DIANA (DIagram ANAlyser) for the automation of Feynman diagram evaluations is presented.

  12. Emissivity corrected infrared method for imaging anomalous structural heat flows

    DOE Patents [OSTI]

    Del Grande, Nancy K. (San Leandro, CA); Durbin, Philip F. (Livermore, CA); Dolan, Kenneth W. (Livermore, CA); Perkins, Dwight E. (Livermore, CA)

    1995-01-01

    A method for detecting flaws in structures using dual band infrared radiation. Heat is applied to the structure being evaluated. The structure is scanned for two different wavelengths and data obtained in the form of images. Images are used to remove clutter to form a corrected image. The existence and nature of a flaw is determined by investigating a variety of features.

  13. Particle Imaging Velocimetry Technique Development for Laboratory Measurement of Fracture Flow Inside a Pressure Vessel Using Neutron Imaging

    SciTech Connect (OSTI)

    Polsky, Yarom; Bingham, Philip R; Bilheux, Hassina Z; Carmichael, Justin R

    2015-01-01

    This paper will describe recent progress made in developing neutron imaging based particle imaging velocimetry techniques for visualizing and quantifying flow structure through a high pressure flow cell with high temperature capability (up to 350 degrees C). This experimental capability has great potential for improving the understanding of flow through fractured systems in applications such as enhanced geothermal systems (EGS). For example, flow structure measurement can be used to develop and validate single phase flow models used for simulation, experimentally identify critical transition regions and their dependence on fracture features such as surface roughness, and study multiphase fluid behavior within fractured systems. The developed method involves the controlled injection of a high contrast fluid into a water flow stream to produce droplets that can be tracked using neutron radiography. A description of the experimental setup will be provided along with an overview of the algorithms used to automatically track droplets and relate them to the velocity gradient in the flow stream. Experimental results will be reported along with volume of fluids based simulation techniques used to model observed flow.

  14. Emissivity corrected infrared method for imaging anomalous structural heat flows

    DOE Patents [OSTI]

    Del Grande, N.K.; Durbin, P.F.; Dolan, K.W.; Perkins, D.E.

    1995-08-22

    A method for detecting flaws in structures using dual band infrared radiation is disclosed. Heat is applied to the structure being evaluated. The structure is scanned for two different wavelengths and data obtained in the form of images. Images are used to remove clutter to form a corrected image. The existence and nature of a flaw is determined by investigating a variety of features. 1 fig.

  15. Imaging Fluid Flow in Geothermal Wells Using Distributed Thermal Perturbation Sensing

    Office of Energy Efficiency and Renewable Energy (EERE)

    Project objective: A New Geothermal Well Imaging Tool. 1.To develop a robust and easily deployable DTPS for monitoring in geothermal wells; and 2. Develop the associated analysis methodology for flow imaging; and?when possible by wellbore conditions?to determine in situthermal conductivity and basal heat flux.

  16. A remote image analysis terminal†

    E-Print Network [OSTI]

    Daigle, Lucien Don

    1976-01-01

    A APPENDIX B APPENDIX C APPENDIX D VITA 140 142 157 157 162 163 164 170 179 190 234 Vrzt I, I S'I' III' I: I OIIRI:. 8 The Remote Image Analysis Terminal System Block Diagram The Digital Interface The Analog Interface Digitizer...- flow Chart Loading and Transmission of Position Coordinates Page 59 61 63 65 66 II-22 II-23 Keyboard Block Diagram Generation and Transmission cE a Hex Digit 69 70 II- 24 I I-25 Opcode Table 73 Partial Block Diagram...

  17. Algorithms for Greechie Diagrams

    E-Print Network [OSTI]

    Brendan D. McKay; Norman D. Megill; Mladen Pavicic

    2001-01-21

    We give a new algorithm for generating Greechie diagrams with arbitrary chosen number of atoms or blocks (with 2,3,4,... atoms) and provide a computer program for generating the diagrams. The results show that the previous algorithm does not produce every diagram and that it is at least 100,000 times slower. We also provide an algorithm and programs for checking of Greechie diagram passage by equations defining varieties of orthomodular lattices and give examples from Hilbert lattices. At the end we discuss some additional characteristics of Greechie diagrams.

  18. 3D seismic imaging of buried Younger Dryas mass movement flows: Lake Windermere, UK

    E-Print Network [OSTI]

    National Oceanography Centre Southampton

    ). In the offshore environment, 3D seismic data sets have bridged the gap between localised core stratigraphy3D seismic imaging of buried Younger Dryas mass movement flows: Lake Windermere, UK Mark E. Vardy a Keywords: High-resolution 3D seismic Submarine landslides Younger Dryas Lake District Windermere Debris

  19. Three-dimensional flow contrast imaging of deep tissue using noncontact diffuse correlation tomography

    SciTech Connect (OSTI)

    Lin, Yu; Huang, Chong; Irwin, Daniel; He, Lian; Shang, Yu; Yu, Guoqiang

    2014-03-24

    This study extended our recently developed noncontact diffuse correlation spectroscopy flowmetry system into noncontact diffuse correlation tomography (ncDCT) for three-dimensional (3-D) flow imaging of deep tissue. A linear array of 15 photodetectors and two laser sources connected to a mobile lens-focusing system enabled automatic and noncontact scanning of flow in a region of interest. These boundary measurements were combined with a finite element framework for DCT image reconstruction implemented into an existing software package. This technique was tested in computer simulations and using a tissue-like phantom with anomaly flow contrast design. The cylindrical tube-shaped anomaly was clearly reconstructed in both simulation and phantom. Recovered and assigned flow contrast changes in anomaly were found to be highly correlated: regression slope?=?1.00, R{sup 2}?=?1.00, and p?imaging of deep tissue blood flow heterogeneities.

  20. Coherence imaging of scrape-off-layer and divertor impurity flows in the Mega Amp Spherical Tokamak (invited)

    SciTech Connect (OSTI)

    Silburn, S. A., E-mail: s.a.silburn@durham.ac.uk; Sharples, R. M. [Centre for Advanced Instrumentation, Department of Physics, Durham University, Durham DH1 3LE (United Kingdom); Harrison, J. R.; Meyer, H.; Michael, C. A. [CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom); Howard, J. [Plasma Research Laboratory, Australian National University, Canberra, ACT 0200 (Australia); Gibson, K. J. [York Plasma Institute, Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom)

    2014-11-15

    A new coherence imaging Doppler spectroscopy diagnostic has been deployed on the UKís Mega Amp Spherical Tokamak for scrape-off-layer and divertor impurity flow measurements. The system has successfully obtained 2D images of C III, C II, and He II line-of-sight flows, in both the lower divertor and main scrape-off-layer. Flow imaging has been obtained at frame rates up to 1 kHz, with flow resolution of around 1 km/s and spatial resolution better than 1 cm, over a 40į field of view. C III data have been tomographically inverted to obtain poloidal profiles of the parallel impurity flow in the divertor under various conditions. In this paper we present the details of the instrument design, operation, calibration, and data analysis as well as a selection of flow imaging results which demonstrate the diagnostic's capabilities.

  1. Multiphase imaging of gas flow in a nanoporous material usingremote detection NMR

    SciTech Connect (OSTI)

    Harel, Elad; Granwehr, Josef; Seeley, Juliette A.; Pines, Alex

    2005-10-03

    Pore structure and connectivity determine how microstructured materials perform in applications such as catalysis, fluid storage and transport, filtering, or as reactors. We report a model study on silica aerogel using a recently introduced time-of-flight (TOF) magnetic resonance imaging technique to characterize the flow field and elucidate the effects of heterogeneities in the pore structure on gas flow and dispersion with Xe-129 as the gas-phase sensor. The observed chemical shift allows the separate visualization of unrestricted xenon and xenon confined in the pores of the aerogel. The asymmetrical nature of the dispersion pattern alludes to the existence of a stationary and a flow regime in the aerogel. An exchange time constant is determined to characterize the gas transfer between them. As a general methodology, this technique provides new insights into the dynamics of flow in porous media where multiple phases or chemical species may be present.

  2. Method and apparatus for optical Doppler tomographic imaging of fluid flow velocity in highly scattering media

    DOE Patents [OSTI]

    Nelson, John Stuart (Laguna Niguel, CA); Milner, Thomas Edward (Irvine, CA); Chen, Zhongping (Irvine, CA)

    1999-01-01

    Optical Doppler tomography permits imaging of fluid flow velocity in highly scattering media. The tomography system combines Doppler velocimetry with high spatial resolution of partially coherent optical interferometry to measure fluid flow velocity at discrete spatial locations. Noninvasive in vivo imaging of blood flow dynamics and tissue structures with high spatial resolutions of the order of 2 to 10 microns is achieved in biological systems. The backscattered interference signals derived from the interferometer may be analyzed either through power spectrum determination to obtain the position and velocity of each particle in the fluid flow sample at each pixel, or the interference spectral density may be analyzed at each frequency in the spectrum to obtain the positions and velocities of the particles in a cross-section to which the interference spectral density corresponds. The realized resolutions of optical Doppler tomography allows noninvasive in vivo imaging of both blood microcirculation and tissue structure surrounding the vessel which has significance for biomedical research and clinical applications.

  3. Multiparticle imaging technique for two-phase fluid flows using pulsed laser speckle velocimetry

    SciTech Connect (OSTI)

    Hassan, T.A.

    1992-12-01

    The practical use of Pulsed Laser Velocimetry (PLV) requires the use of fast, reliable computer-based methods for tracking numerous particles suspended in a fluid flow. Two methods for performing tracking are presented. One method tracks a particle through multiple sequential images (minimum of four required) by prediction and verification of particle displacement and direction. The other method, requiring only two sequential images uses a dynamic, binary, spatial, cross-correlation technique. The algorithms are tested on computer-generated synthetic data and experimental data which was obtained with traditional PLV methods. This allowed error analysis and testing of the algorithms on real engineering flows. A novel method is proposed which eliminates tedious, undersirable, manual, operator assistance in removing erroneous vectors. This method uses an iterative process involving an interpolated field produced from the most reliable vectors. Methods are developed to allow fast analysis and presentation of sets of PLV image data. Experimental investigation of a two-phase, horizontal, stratified, flow regime was performed to determine the interface drag force, and correspondingly, the drag coefficient. A horizontal, stratified flow test facility using water and air was constructed to allow interface shear measurements with PLV techniques. The experimentally obtained local drag measurements were compared with theoretical results given by conventional interfacial drag theory. Close agreement was shown when local conditions near the interface were similar to space-averaged conditions. However, theory based on macroscopic, space-averaged flow behavior was shown to give incorrect results if the local gas velocity near the interface as unstable, transient, and dissimilar from the average gas velocity through the test facility.

  4. Experimental investigation of subcooled flow boiling using synchronized high speed video, infrared thermography, and particle image velocimetry

    E-Print Network [OSTI]

    Phillips, Bren Andrew

    2014-01-01

    Subcooled flow boiling of water was experimentally investigated using high-speed video (HSV), infrared (IR) thermography, and particle image velocimetry (PIV) to generate a unique database of synchronized data. HSV allowed ...

  5. A digital video camera for application of particle image velocimetry in high-speed flows

    SciTech Connect (OSTI)

    Willert, C.; Stasicki, B.; Raffel, M.; Kompenhans, J.

    1995-12-31

    A high-speed digital camera based on video technology for application of particle image velocimetry in wind tunnels is described. The camera contains two independently triggerable interline CCD sensors which are mounted on two faces of a cube beam splitter permitting the use of a single lens. Each of the sensors has a minimal exposure time of 0.8 {micro}s with a trigger response time of less than 1 {micro}s. The asynchronous reset capability permits the camera to trigger directly off a pulsed laser with a repetition rate differing from the standard 25 Hz CCIR video frame rate. Captured images are digitized within and stored in RAM the camera which can be read through the parallel port of a computer. The camera is software configurable with the settings being non-volatile. Technical aspects such as sensor alignment and calibration through software are described. Close-up PIV measurements on a free jet illustrate that, in the future, the camera can be successfully utilized at imaging high-speed flows over a small field of view covering several cm{sup 2}, such as the flow between turbine blades. Further, the electronic shutter permits its use in luminous environments such as illuminated laboratories, wind tunnels or flames.

  6. ALGEBRAS OF OPEN DYNAMICAL SYSTEMS ON THE OPERAD OF WIRING DIAGRAMS

    E-Print Network [OSTI]

    Spivak, David

    among visual languages such as Feynman diagrams, circuit diagrams, social networks, Petri nets, flow of diagrams and networks to study systems of various sorts. Category theory serves as an organizational to visualize compositions and feedback in networked systems. Traced monoidal categories are a general framework for s

  7. The Semigroup of Betti Diagrams

    E-Print Network [OSTI]

    Erman, Daniel

    2008-01-01

    The recent proof of the Boij-Soederberg conjectures reveals new structure about Betti diagrams of modules, giving a complete description of the cone of Betti diagrams. To understand the integral structure of Betti diagrams, we investigate the semigroup of Betti diagrams. We answer several fundamental questions about this semigroup, such as a proof that the semigroup is finitely generated. We also produce numerous examples which belong to the cone of Betti diagrams but which do not equal the Betti diagram of an actual module.

  8. Laser Doppler field sensor for high resolution flow velocity imaging without camera

    SciTech Connect (OSTI)

    Voigt, Andreas; Bayer, Christian; Shirai, Katsuaki; Buettner, Lars; Czarske, Juergen

    2008-09-20

    In this paper we present a laser sensor for highly spatially resolved flow imaging without using a camera. The sensor is an extension of the principle of laser Doppler anemometry (LDA). Instead of a parallel fringe system, diverging and converging fringes are employed. This method facilitates the determination of the tracer particle position within the measurement volume and leads to an increased spatial and velocity resolution compared to conventional LDA. Using a total number of four fringe systems the flow is resolved in two spatial dimensions and the orthogonal velocity component. Since no camera is used, the resolution of the sensor is not influenced by pixel size effects. A spatial resolution of 4 {mu}m in the x direction and 16 {mu}m in the y direction and a relative velocity resolution of 1x10{sup -3} have been demonstrated up to now. As a first application we present the velocity measurement of an injection nozzle flow. The sensor is also highly suitable for applications in nano- and microfluidics, e.g., for the measurement of flow rates.

  9. Imaging Fluid Flow in Geothermal Wells Using Distributed Thermal Perturbation Sensing

    SciTech Connect (OSTI)

    Freifeld, B.; Finsterle, S.

    2010-12-10

    The objective of Task 2 is to develop a numerical method for the efficient and accurate analysis of distributed thermal perturbation sensing (DTPS) data for (1) imaging flow profiles and (2) in situ determination of thermal conductivities and heat fluxes. Numerical forward and inverse modeling is employed to: (1) Examine heat and fluid flow processes near a geothermal well under heating and cooling conditions; (2) Demonstrate ability to interpret DTPS thermal profiles with acceptable estimation uncertainty using inverse modeling of synthetic temperature data; and (3) Develop template model and analysis procedure for the inversion of temperature data collected during a thermal perturbation test using fiber-optic distributed temperature sensors. This status report summarizes initial model developments and analyses.

  10. High-frame rate, fast neutron imaging of two-phase flow in a thin rectangular channel

    E-Print Network [OSTI]

    Zboray, R; Dangendorf, V; Stark, M; Tittelmeier, K; Cortesi, M; Adams, R

    2015-01-01

    We have demonstrated the feasibility of performing high-frame-rate, fast neutron radiography of air-water two-phase flows in a thin channel with rectangular cross section. The experiments have been carried out at the accelerator facility of the Physikalisch-Technische Bundesanstalt. A polychromatic, high-intensity fast neutron beam with average energy of 6 MeV was produced by 11.5 MeV deuterons hitting a thick Be target. Image sequences down to 10 millisecond exposure times were obtained using a fast-neutron imaging detector developed in the context of fast-neutron resonance imaging. Different two-phase flow regimes such as bubbly slug and churn flows have been examined. Two phase flow parameters like the volumetric gas fraction, bubble size and bubble velocities have been measured. The first results are promising, improvements for future experiments are also discussed.

  11. On web diagrams Jun Murakami

    E-Print Network [OSTI]

    On web diagrams Jun Murakami Department of Mathematics, Graduate School of Science, Osaka≠ tive invariant is defined in the space of web diagrams, and it includes the Casson≠ Walker invariant of the mapping class groups. (cf. [9], [10]) 2. Web space 2.1. Web diagram. To explain the universal perturbative

  12. Physics 344 Lab 4 Stellar Photometry and the Color-Magnitude Diagram

    E-Print Network [OSTI]

    Gustafsson, Torgny

    1 Physics 344 Lab 4 Stellar Photometry and the Color-Magnitude Diagram Observing: October 10 ≠ 23 in an image, perform aperture photometry on them, and then measure the average shape of a star in the image

  13. Using Normal Flow for Detection and Tracking of Limbs in Color Images Zoran Duric, Fayin Li, Yan Sun, Harry Wechsler

    E-Print Network [OSTI]

    Duric, Zoran

    Using Normal Flow for Detection and Tracking of Limbs in Color Images Zoran Duric, Fayin Li, Yan Sun, Harry Wechsler Department of Computer Science George Mason University Fairfax, VA 22030 {zduric and tracking human motions over various periods of time. In this paper we de- scribe a method of detecting

  14. Perturbations to the Hubble diagram

    E-Print Network [OSTI]

    Thomas Schucker; Ilhem ZouZou

    2005-11-17

    We compute the linear responses of the Hubble diagram to small scalar perturbations in the Robertson-Walker metric and to small peculiar velocities of emitter and receiver. We discuss the monotonicity constraint of the Hubble diagram in the light of these responses.

  15. Causal diagrams for physical models

    E-Print Network [OSTI]

    Kinsler, Paul

    2015-01-01

    I present a scheme of drawing causal diagrams based on physically motivated mathematical models expressed in terms of temporal differential equations. They provide a means of better understanding the processes and causal relationships contained within such systems.

  16. Enhancement of two-phase flow images obtained using dynamic neutron radiography†

    E-Print Network [OSTI]

    Johns, Russell Craig

    1995-01-01

    -phase flow models in small diameter flow channels. An initial series of real-time neutron radiography experiments were performed at the Texas A&M University System, Texas Engineering Experiment Station, Nuclear Science Center Reactor (NSCR) to evaluate...

  17. Pulsed Gradient Spin Echo Nuclear Magnetic Resonance Imaging of Diffusion in Granular Flow

    SciTech Connect (OSTI)

    Seymour, Joseph D.; Caprihan, Arvind; Altobelli, Stephen A.; Fukushima, Eiichi

    2000-01-10

    We derive the formalism to obtain spatial distributions of collisional correlation times for macroscopic particles undergoing granular flow from pulsed gradient spin echo nuclear magnetic resonance diffusion data. This is demonstrated with an example of axial motion in the shear flow regime of a 3D granular flow in a horizontal rotating cylinder at one rotation rate. (c) 2000 The American Physical Society.

  18. Multiparticle imaging technique for two-phase fluid flows using pulsed laser speckle velocimetry. Final report, September 1988--November 1992

    SciTech Connect (OSTI)

    Hassan, T.A.

    1992-12-01

    The practical use of Pulsed Laser Velocimetry (PLV) requires the use of fast, reliable computer-based methods for tracking numerous particles suspended in a fluid flow. Two methods for performing tracking are presented. One method tracks a particle through multiple sequential images (minimum of four required) by prediction and verification of particle displacement and direction. The other method, requiring only two sequential images uses a dynamic, binary, spatial, cross-correlation technique. The algorithms are tested on computer-generated synthetic data and experimental data which was obtained with traditional PLV methods. This allowed error analysis and testing of the algorithms on real engineering flows. A novel method is proposed which eliminates tedious, undersirable, manual, operator assistance in removing erroneous vectors. This method uses an iterative process involving an interpolated field produced from the most reliable vectors. Methods are developed to allow fast analysis and presentation of sets of PLV image data. Experimental investigation of a two-phase, horizontal, stratified, flow regime was performed to determine the interface drag force, and correspondingly, the drag coefficient. A horizontal, stratified flow test facility using water and air was constructed to allow interface shear measurements with PLV techniques. The experimentally obtained local drag measurements were compared with theoretical results given by conventional interfacial drag theory. Close agreement was shown when local conditions near the interface were similar to space-averaged conditions. However, theory based on macroscopic, space-averaged flow behavior was shown to give incorrect results if the local gas velocity near the interface as unstable, transient, and dissimilar from the average gas velocity through the test facility.

  19. PARTICLE IMAGE VELOCIMETRY MEASUREMENTS IN A REPRESENTATIVE GAS-COOLED PRISMATIC REACTOR CORE MODEL: FLOW IN THE COOLANT CHANNELS AND INTERSTITIAL BYPASS GAPS

    SciTech Connect (OSTI)

    Thomas E. Conder; Richard Skifton; Ralph Budwig

    2012-11-01

    Core bypass flow is one of the key issues with the prismatic Gas Turbine-Modular Helium Reactor, and it refers to the coolant that navigates through the interstitial, non-cooling passages between the graphite fuel blocks instead of traveling through the designated coolant channels. To determine the bypass flow, a double scale representative model was manufactured and installed in the Matched Index-of-Refraction flow facility; after which, stereo Particle Image Velocimetry (PIV) was employed to measure the flow field within. PIV images were analyzed to produce vector maps, and flow rates were calculated by numerically integrating over the velocity field. It was found that the bypass flow varied between 6.9-15.8% for channel Reynolds numbers of 1,746 and 4,618. The results were compared to computational fluid dynamic (CFD) pre-test simulations. When compared to these pretest calculations, the CFD analysis appeared to under predict the flow through the gap.

  20. Ground-penetrating radar imaging of fluid flow through a discrete fracture

    E-Print Network [OSTI]

    Baker, Matthew Peter

    2014-12-31

    Predicting groundwater flow and transport of contaminants in fractured rock is challenging due to the heterogeneity of hydraulic properties that are difficult to characterize using conventional hydraulic testing methods. Heterogeneity is often...

  1. Analysis of multiphase fluid flows via high speed and synthetic aperture three dimensional imaging

    E-Print Network [OSTI]

    Scharfman, Barry Ethan

    2012-01-01

    Spray flows are a difficult problem within the realm of fluid mechanics because of the complicated interfacial physics involved. Complete models of sprays having even the simplest geometries continue to elude researchers ...

  2. A HR-like Diagram for Solar/Stellar Flares and Corona -- Emission Measure vs Temperature Diagram

    E-Print Network [OSTI]

    Kazunari Shibata; Takaaki Yokoyama

    2002-06-03

    In our previous paper, we have presented a theory to explain the observed universal correlation between the emission measure ($EM=n^2 V$) and temperature (T) for solar/stellar flares on the basis of the magnetic reconnection model with heat conduction and chromospheric evaporation. Here n is the electron density and V is the volume. By extending our theory to general situations, we examined the EM-T diagram in detail, and found the following properties: 1) The universal correlation sequence (``main sequence flares'') with $EM \\propto T^{17/2}$ corresponds to the case of constant heating flux or equivalently the case of constant magnetic field strength in the reconnection model. 2) The EM-T diagram has a forbidden region, where gas pressure of flares exceeds magnetic pressure. 3) There is a coronal branch with $EM \\propto T^{15/2}$ for $T 10^7$ K. This branch is situated left side of the main sequence flares in the EM-T diagram. 4) There is another forbidden region determined by the length of flare loop; a lower limit of flare loop is $10^7$ cm. Small flares near this limit correspond to nanoflares observed by SOHO/EIT. 5) We can plot flare evolution track on the EM-T diagram. A flare evolves from the coronal branch to main sequence flares, then returns to the coronal branch eventually. These properties of the EM-T diagram are similar to those of the HR diagram for stars, and thus we propose that the EM-T diagram is quite useful to estimate the physical quantities (loop length, heating flux, magnetic field strength, total energy and so on) of flares and corona when there is no spatially resolved imaging observations.

  3. Diagrams of affine permutations and their labellings

    E-Print Network [OSTI]

    Yun, Taedong

    2013-01-01

    We study affine permutation diagrams and their labellings with positive integers. Balanced labellings of a Rothe diagram of a finite permutation were defined by Fomin- Greene-Reiner-Shimozono, and we extend this notion to ...

  4. LUNAR MASS SPECTROMETER RELIABILITY LOGIC DIAGRAM

    E-Print Network [OSTI]

    Rathbun, Julie A.

    point (A) to (F). The block diagram also defines the reliability functions for the purpose of FMEA 1

  5. Particle image velocimetry measurements for opposing flow in a vertical channel with a differential and asymmetric heating condition

    SciTech Connect (OSTI)

    Martinez-Suastegui, L. [Graduate Student, Facultad de Ingenieria, Universidad Nacional Autonoma de Mexico, C.U., Mexico 04510 D.F. (Mexico); Trevino, C. [Facultad de Ciencias, Universidad Nacional Autonoma de Mexico, C.U., Mexico 04510 D.F. (Mexico)

    2007-10-15

    Particle image velocimetry (PIV) measurements were carried out in an experimental investigation of laminar mixed convection in a vertical duct with a square cross-section. The main downward water-flow is driven by gravity while a portion of a lateral side is heated, and buoyancy forces produce non-stationary vortex structures close to the heated region. Various ranges of the Grashof number, Gr are studied in combination with the Reynolds number, Re varying from 300 to 700. The values of the generalized buoyancy parameter or Richardson number, Ri = Gr/Re{sup 2} parallel to the Grashof number are included in the results. The influence of these nondimensional parameters and how they affect the fluid flow structure and vortex sizes and locations are reported. The flow patterns are nonsymmetric, periodic, and exhibit increasing complexity and frequency for increasing buoyancy. For the averaged values of the resulting vortex dimensions, it was found that a better and more congruent representation occurs when employing the Grashof and Reynolds numbers as independent parameters. (author)

  6. Dual FIB-SEM 3D imaging and lattice boltzmann modeling of porosimetry and multiphase flow in chalk.

    SciTech Connect (OSTI)

    Rinehart, Alex; Petrusak, Robin (Advanced Resources International, Inc., Arlington, VA); Heath, Jason E.; Dewers, Thomas A.; Yoon, Hongkyu

    2010-12-01

    Mercury intrusion porosimetry (MIP) is an often-applied technique for determining pore throat distributions and seal analysis of fine-grained rocks. Due to closure effects, potential pore collapse, and complex pore network topologies, MIP data interpretation can be ambiguous, and often biased toward smaller pores in the distribution. We apply 3D imaging techniques and lattice-Boltzmann modeling in interpreting MIP data for samples of the Cretaceous Selma Group Chalk. In the Mississippi Interior Salt Basin, the Selma Chalk is the apparent seal for oil and gas fields in the underlying Eutaw Fm., and, where unfractured, the Selma Chalk is one of the regional-scale seals identified by the Southeast Regional Carbon Sequestration Partnership for CO2 injection sites. Dual focused ion - scanning electron beam and laser scanning confocal microscopy methods are used for 3D imaging of nanometer-to-micron scale microcrack and pore distributions in the Selma Chalk. A combination of image analysis software is used to obtain geometric pore body and throat distributions and other topological properties, which are compared to MIP results. 3D data sets of pore-microfracture networks are used in Lattice Boltzmann simulations of drainage (wetting fluid displaced by non-wetting fluid via the Shan-Chen algorithm), which in turn are used to model MIP procedures. Results are used in interpreting MIP results, understanding microfracture-matrix interaction during multiphase flow, and seal analysis for underground CO2 storage.

  7. Emission of Inertial Waves by Baroclinically Unstable Flows: Laboratory Experiments with Altimetric Imaging Velocimetry

    E-Print Network [OSTI]

    the dispersion relation for the inertial waves. The energy of the waves is small compared to the energy, or the "gradient wind" velocity with very high spatial resolution (typically several million vectors) limited largely by the pixel resolution of the available imaging sensors. The technique is particularly suited

  8. MULTIDISCIPLINARY IMAGING OF ROCK PROPERTIES IN CARBONATE RESERVOIRS FOR FLOW-UNIT TARGETING

    SciTech Connect (OSTI)

    Stephen C. Ruppel

    2005-02-01

    Despite declining production rates, existing reservoirs in the US contain large quantities of remaining oil and gas that constitute a huge target for improved diagnosis and imaging of reservoir properties. The resource target is especially large in carbonate reservoirs, where conventional data and methodologies are normally insufficient to resolve critical scales of reservoir heterogeneity. The objectives of the research described in this report were to develop and test such methodologies for improved imaging, measurement, modeling, and prediction of reservoir properties in carbonate hydrocarbon reservoirs. The focus of the study is the Permian-age Fullerton Clear Fork reservoir of the Permian Basin of West Texas. This reservoir is an especially appropriate choice considering (a) the Permian Basin is the largest oil-bearing basin in the US, and (b) as a play, Clear Fork reservoirs have exhibited the lowest recovery efficiencies of all carbonate reservoirs in the Permian Basin.

  9. Energy Level Diagrams A=10

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits Energy

  10. Energy Level Diagrams A=11

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits Energy1

  11. Energy Level Diagrams A=12

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits Energy12

  12. Energy Level Diagrams A=13

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits Energy123

  13. Energy Level Diagrams A=14

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits Energy1234

  14. Energy Level Diagrams A=15

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits Energy12345

  15. Energy Level Diagrams A=16

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits Energy123456

  16. Energy Level Diagrams A=17

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits

  17. Energy Level Diagrams A=18

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits8 Available

  18. Energy Level Diagrams A=19

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits8 Available19

  19. Energy Level Diagrams A=20

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits8

  20. Energy Level Diagrams A=4

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits84 Available

  1. Energy Level Diagrams A=5

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits84 Available5

  2. Energy Level Diagrams A=6

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits84

  3. Energy Level Diagrams A=7

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits847 Available

  4. Energy Level Diagrams A=8

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits847

  5. Energy Level Diagrams A=9

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunities EnergyU.S. DOE Office of99 Diagram 4.Energy Kits8479

  6. Development and Implementation of 3-D, High Speed Capacitance Tomography for Imaging Large-Scale, Cold-Flow Circulating Fluidized Bed

    SciTech Connect (OSTI)

    Qussai Marashdeh

    2012-09-30

    A detailed understanding of multiphase flow behavior inside a Circulating Fluidized Bed (CFB) requires a 3-D technique capable of visualizing the flow field in real-time. Electrical Capacitance Volume Tomography (ECVT) is a newly developed technique that can provide such measurements. The attractiveness of the technique is in its low profile sensors, fast imaging speed and scalability to different section sizes, low operating cost, and safety. Moreover, the flexibility of ECVT sensors enable them to be designed around virtually any geometry, rendering them suitable to be used for measurement of solid flows in exit regions of the CFB. Tech4Imaging LLC has worked under contract with the U.S. Department of Energy‚??s National Energy Technology Laboratory (DOE NETL) to develop an ECVT system for cold flow visualization and install it on a 12 inch ID circulating fluidized bed. The objective of this project was to help advance multi-phase flow science through implementation of an ECVT system on a cold flow model at DOE NETL. This project has responded to multi-phase community and industry needs of developing a tool that can be used to develop flow models, validate computational fluid dynamics simulations, provide detailed real-time feedback of process variables, and provide a comprehensive understating of multi-phase flow behavior. In this project, a complete ECVT system was successfully developed after considering different potential electronics and sensor designs. The system was tested at various flow conditions and with different materials, yielding real-time images of flow interaction in a gas-solid flow system. The system was installed on a 12 inch ID CFB of the US Department of Energy, Morgantown Labs. Technical and economic assessment of Scale-up and Commercialization of ECVT was also conducted. Experiments conducted with larger sensors in conditions similar to industrial settings are very promising. ECVT has also the potential to be developed for imaging multi-phase flow systems in high temperature and high pressure conditions, typical in many industrial applications.

  7. Phase stabilities at a glance: Stability diagrams of nickel dipnictides

    SciTech Connect (OSTI)

    Bachhuber, F.; School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland ; Rothballer, J.; Weihrich, R.; SŲhnel, T.; Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study, Massey University Auckland, Auckland

    2013-12-07

    In the course of the recent advances in chemical structure prediction, a straightforward type of diagram to evaluate phase stabilities is presented based on an expedient example. Crystal structures and energetic stabilities of dipnictides NiPn{sub 2} (Pn = N, P, As, Sb, Bi) are systematically investigated by first principles calculations within the framework of density functional theory using the generalized gradient approximation to treat exchange and correlation. These dipnictides show remarkable polymorphism that is not yet understood systematically and offers room for the discovery of new phases. Relationships between the concerned structures including the marcasite, the pyrite, the arsenopyrite/CoSb{sub 2}, and the NiAs{sub 2} types are highlighted by means of common structural fragments. Electronic stabilities of experimentally known and related AB{sub 2} structure types are presented graphically in so-called stability diagrams. Additionally, competing binary phases are taken into consideration in the diagrams to evaluate the stabilities of the title compounds with respect to decomposition. The main purpose of the stability diagrams is the introduction of an image that enables the estimation of phase stabilities at a single glance. Beyond that, some of the energetically favored structure types can be identified as potential new phases.

  8. Direct Numerical Simulation of Pore-Scale Flow in a Bead Pack: Comparison with Magnetic Resonance Imaging Observations

    SciTech Connect (OSTI)

    Yang, Xiaofan; Scheibe, Timothy D.; Richmond, Marshall C.; Perkins, William A.; Vogt, Sarah J.; Codd, Sarah L.; Seymour, Joseph D.; Mckinley, Matthew I.

    2013-04-01

    A significant body of current research is aimed at developing methods for numerical simulation of flow and transport in porous media that explicitly resolve complex pore and solid geometries, and at utilizing such models to study the relationships between fundamental pore-scale processes and macroscopic manifestations at larger (i.e., Darcy) scales. A number of different numerical methods for pore-scale simulation have been developed, and have been extensively tested and validated for simplified geometries. However, validation of pore-scale simulations of fluid velocity for complex, three-dimensional (3D) pore geometries that are representative of natural porous media is challenging due to our limited ability to measure pore-scale velocity in such systems. Recent advances in magnetic resonance imaging (MRI) offer the opportunity to measure not only the pore geometry, but also local fluid velocities under steady-state flow conditions in 3D and with high spatial resolution. In this paper, we present a 3D velocity field measured at sub-pore resolution (tens of micrometers) over a centimeter-scale 3D domain using MRI methods. We have utilized the measured pore geometry to perform 3D simulations of Navier-Stokes flow over the same domain using direct numerical simulation techniques. We present a comparison of the numerical simulation results with the measured velocity field. It is shown that the numerical results match the observed velocity patterns well overall except for a variance and small systematic scaling which can be attributed to the known experimental error in the MRI measurements. The comparisons presented here provide strong validation of the pore-scale simulation methods and new insights for interpretation of uncertainty in MRI measurements of pore-scale velocity. This study also provides a potential benchmark for future comparison of other pore-scale simulation methods.

  9. Seismic imaging of reservoir flow properties: Resolving waterinflux and reservoir permeability

    SciTech Connect (OSTI)

    Vasco, D.W.; Keers, Henk

    2006-11-27

    Methods for geophysical model assessment, in particuale thecomputation of model parameter resolution, indicate the value and thelimitations of time-lapse data in estimating reservoir flow properties. Atrajectory-based method for computing sensitivities provides an effectivemeans to compute model parameter resolutions. We examine the commonsituation in which water encroaches into a resrvoir from below, as due tothe upward movement of an oil-water contact. Using straight-forwardtechniques we find that, by inclusing reflections off the top and bottomof a reservoir tens of meters thick, we can infer reservoir permeabilitybased upon time-lapse data. We find that, for the caseof water influxfrom below, using multiple time-lapse 'snapshots' does not necessarilyimprove the resolution of reservoir permeability. An application totime-lapse data from the Norne field illustrates that we can resolve thepermeability near a producing well using reflections from threeinterfaces associated with the reservoir.

  10. Richard P. Feynman and the Feynman Diagrams

    Office of Scientific and Technical Information (OSTI)

    Web Pages: Richard Feynman (1918 - 1988) Feynman Diagrams Landmarks: Powerful Pictures Los Alamos From Below: Reminiscences 1943-1945, by Richard Feynman, 1975 Plenty of...

  11. Development of algorithms for capacitance imaging techniques for fluidized bed flow fields

    SciTech Connect (OSTI)

    Loudin, W.J.

    1991-01-01

    The objective of this research is to provide support for the instrumentation concept of a High Resolution Capacitance Imaging System (HRCIS). The work involves the development and evaluation of the mathematical theory and associated models and algorithms which reduce the electronic measurements to valid physical characterizations. The research and development require the investigation of techniques to solve large systems of equations based on capacitance measurements for various electrode configurations in order to estimate densities of materials in a cross-section of a fluidized bed. Capacitance measurements are made for 400 connections of the 32-electrode system; 400 corresponding electric-field curves are constructed by solving a second order partial differential equation. These curves are used to partition the circular disk into 193 regions called pixels, and the density of material in each pixel is to be estimated. Two methods of approximating densities have been developed and consideration of a third method has been initiated. One method (Method 1) is based on products of displacement currents for intersecting electric-field curves on a cross section. For each pixel one point of intersection is chosen, and the product of the capacitance measurements is found. Both the product and the square-root-of-product seem to yield good relative distribution of densities.

  12. Development of algorithms for capacitance imaging techniques for fluidized bed flow fields. 1990 Annual report

    SciTech Connect (OSTI)

    Loudin, W.J.

    1991-01-01

    The objective of this research is to provide support for the instrumentation concept of a High Resolution Capacitance Imaging System (HRCIS). The work involves the development and evaluation of the mathematical theory and associated models and algorithms which reduce the electronic measurements to valid physical characterizations. The research and development require the investigation of techniques to solve large systems of equations based on capacitance measurements for various electrode configurations in order to estimate densities of materials in a cross-section of a fluidized bed. Capacitance measurements are made for 400 connections of the 32-electrode system; 400 corresponding electric-field curves are constructed by solving a second order partial differential equation. These curves are used to partition the circular disk into 193 regions called pixels, and the density of material in each pixel is to be estimated. Two methods of approximating densities have been developed and consideration of a third method has been initiated. One method (Method 1) is based on products of displacement currents for intersecting electric-field curves on a cross section. For each pixel one point of intersection is chosen, and the product of the capacitance measurements is found. Both the product and the square-root-of-product seem to yield good relative distribution of densities.

  13. ECE 423: DSP for Communication Block Diagrams

    E-Print Network [OSTI]

    Connors, Daniel A.

    ECE 423: DSP for Communication Block Diagrams Discrete-time System Analysis/Design Sampling from high-level block diagram operation of a digital system such as microprocessor Simulation Analysis and Quantization DSP System Design/Characterization Real-time DSP Hardware and Software - Understands basic signal

  14. A Hubble Diagram for Quasars

    E-Print Network [OSTI]

    Risaliti, Guido

    2015-01-01

    We present a new method to test the cosmological model, and to estimate the cosmological parameters, based on the non-linear relation between ultraviolet and X-ray luminosity of quasars. We built a data set of ~1,250 quasars by merging several literature samples with X-ray measurements at 2 keV and SDSS photometry, which was used to estimate the extinction-corrected 2500~\\AA\\ flux. We obtained three main results: (1) we checked the non-linear relation between X-ray and UV luminosities in small redshift bins up to z~6, confirming that it holds at all redshifts with the same slope; (2) we built a Hubble diagram for quasars up to z~6, which is well matched to that of supernovae in the common z=0-1.4 redshift interval, and extends the test of the cosmological model up to z~6; (3) we showed that this non-linear relation is a powerful tool to estimate cosmological parameters. With present data, assuming a $\\Lambda$CDM model, we obtain $\\Omega_M$=0.21$^{+0.08}_{-0.10}$ and $\\Omega_\\Lambda$=0.95$^{+0.30}_{-0.20}$ ($\\...

  15. Reveal: A Tool to Reverse Engineer Class Diagrams

    E-Print Network [OSTI]

    Malloy, Brian

    class diagrams, graphviz, the tool that we use to draw the class diagrams, and about keystone the parser UML class diagrams, the graphviz tool, and the keystone parser front- end that we use to parse the C

  16. SU-E-I-51: Use of Blade Sequences in Cervical Spine MR Imaging for Eliminating Motion, Truncation and Flow Artifacts

    SciTech Connect (OSTI)

    Mavroidis, P; Lavdas, E; Kostopoulos, S; Ninos, C; Strikou, A; Glotsos, D; Vlachopoulou, A; Oikonomou, G; Economopoulos, N; Roka, V; Sakkas, G; Tsagkalis, A; Batsikas, G; Statkahis, S; Papanikolaou, N

    2014-06-01

    Purpose: To assess the efficacy of the BLADE technique to eliminate motion, truncation, flow and other artifacts in Cervical Spine MRI compared to the conventional technique. To study the ability of the examined sequences to reduce the indetention and wrap artifacts, which have been reported in BLADE sagittal sequences. Methods: Forty consecutive subjects, who had been routinely scanned for cervical spine examination using four different image acquisition techniques, were analyzed. More specifically, the following pairs of sequences were compared: a) T2 TSE SAG vs. T2 TSE SAG BLADE and b) T2 TIRM SAG vs. T2 TIRM SAG BLADE. A quantitative analysis was performed using the signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR) and relative contrast (ReCon) measures. A qualitative analysis was also performed by two radiologists, who graded seven image characteristics on a 5-point scale (0:non-visualization; 1:poor; 2:average; 3:good; 4:excellent). The observers also evaluated the presence of image artifacts (motion, truncation, flow, indentation). Results: Based on the findings of the quantitative analysis, the ReCON values of the CSF (cerebrospinal fluid)/SC (spinal cord) between TIRM SAG and TIRM SAG BLADE were found to present statistical significant differences (p<0.001). Regarding motion and truncation artifacts, the T2 TSE SAG BLADE was superior compared to the T2 TSE SAG and the T2 TIRM SAG BLADE was superior compared to the T2 TIRM SAG. Regarding flow artifacts, T2 TIRM SAG BLADE eliminated more artifacts compared to the T2 TIRM SAG. Conclusion: The use of BLADE sequences in cervical spine MR examinations appears to be capable of potentially eliminating motion, pulsatile flow and trancation artifacts. Furthermore, BLADE sequences are proposed to be used in the standard examination protocols based on the fact that a significantly improved image quality could be achieved.

  17. Smart Grid Conceptual Actors/Data Flow Diagram- Cross Domain...

    Office of Environmental Management (EM)

    Open SGSG-Network TF More Documents & Publications Report to NIST on the Smart Grid Interoperability Standards Roadmap SG Network System Requirements Specification- Interim...

  18. Control and Data Flow Testing on Function Block Diagrams

    E-Print Network [OSTI]

    Jee, Eunkyoung

    an indispensable step required to assure software quality. In the nuclear power plant control system, as existing≠80, 2005. c Springer-Verlag Berlin Heidelberg 2005 #12;68 E. Jee, J. Yoo, and S. Cha has been done

  19. EIA - Natural Gas Pipeline Network - Expansion Process Flow Diagram

    Gasoline and Diesel Fuel Update (EIA)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979Coal4Cubic43,728Configuration AquiferDevelopment &

  20. Long Term Competition Process Flow Diagram_09-11-2014

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogo and-E CChinaC L S CLogin HelpLoisLong RangeIs

  1. Persistent Near-Surface Flow Structures from Local Helioseismology

    E-Print Network [OSTI]

    Howe, R; Baker, D; Harra, L; van Driel-Gesztelyi, L; Bogart, R S

    2015-01-01

    Near-surface flows measured by the ring-diagram technique of local helioseismology show structures that persist over multiple rotations. We examine these phenomena using data from the {\\em Global Oscillation Network Group} (GONG) and the {\\em Helioseismic and Magnetic Imager} (HMI) and show that a correlation analysis of the structures can be used to estimate the rotation rate as a function of latitude, giving a result consistent with the near-surface rate from global helioseismology and slightly slower than that obtained from a similar analysis of the surface magnetic field strength. At latitudes of 60$^{\\circ}$ and above the HMI flow data reveal a strong signature of a two-sided zonal flow structure. This signature may be related to recent reports of "giant cells" in solar convection.

  2. Geological flows

    E-Print Network [OSTI]

    Yu. N. Bratkov

    2008-11-19

    In this paper geology and planetology are considered using new conceptual basis of high-speed flow dynamics. Recent photo technics allow to see all details of a flow, 'cause the flow is static during very short time interval. On the other hand, maps and images of many planets are accessible. Identity of geological flows and high-speed gas dynamics is demonstrated. There is another time scale, and no more. All results, as far as the concept, are new and belong to the author. No formulae, pictures only.

  3. Multi-Ridge Fitting for Ring-Diagram Helioseismology

    E-Print Network [OSTI]

    Greer, Benjamin J; Toomre, Juri

    2014-01-01

    Inferences of sub-surface flow velocities using local domain ring-diagram helioseismology depend on measuring the frequency splittings of oscillation modes seen in acoustic power spectra. Current methods for making these measurements utilize maximum-likelihood fitting techniques to match a model of modal power to the spectra. The model typically describes a single oscillation mode, and each mode in a given power spectrum is fit independently. We present a new method that produces measurements with greater reliability and accuracy by fitting multiple modes simultaneously. We demonstrate how this method permits measurements of sub-surface flows deeper into the Sun while providing higher uniformity in data coverage and velocity response closer to the limb of the solar disk. While the previous fitting method performs better for some measurements of low-phase-speed modes, we find this new method to be particularly useful for high phase-speed modes and small spatial areas.

  4. Annihilation diagrams in two-body nonleptonic decays of charmed...

    Office of Scientific and Technical Information (OSTI)

    FEYNMAN DIAGRAM; TWO-BODY PROBLEM; AXIAL VECTOR MESONS; KOBAYASHI-MASKAWA MATRIX; PSEUDOSCALAR MESONS; BASIC INTERACTIONS; BOSONS; CHARM PARTICLES; DECAY; DIAGRAMS;...

  5. Imaging

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you notHeat Pumps Heat Pumpsfacility doe logo CH2M-WG logoImaging

  6. Imaging

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenry Bellamy, Ph.D.FoodHydropower,PrincipalIdahoImaging Print The

  7. Imaging

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenry Bellamy, Ph.D.FoodHydropower,PrincipalIdahoImaging Print

  8. Non-Planar On-Shell Diagrams

    E-Print Network [OSTI]

    Sebastian Franco; Daniele Galloni; Brenda Penante; Congkao Wen

    2015-03-17

    We initiate a systematic study of non-planar on-shell diagrams in N=4 SYM and develop powerful technology for doing so. We introduce canonical variables generalizing face variables, which make the dlog form of the on-shell form explicit. We make significant progress towards a general classification of arbitrary on-shell diagrams by means of two classes of combinatorial objects: generalized matching and matroid polytopes. We propose a boundary measurement that connects general on-shell diagrams to the Grassmannian. Our proposal exhibits two important and non-trivial properties: positivity in the planar case and it matches the combinatorial description of the diagrams in terms of generalized matroid polytopes. Interestingly, non-planar diagrams exhibit novel phenomena, such as the emergence of constraints on Plucker coordinates beyond Plucker relations when deleting edges, which are neatly captured by the generalized matching and matroid polytopes. This behavior is tied to the existence of a new type of poles in the on-shell form at which combinations of Plucker coordinates vanish. Finally, we introduce a prescription, applicable beyond the MHV case, for writing the on-shell form as a function of minors directly from the graph.

  9. Sandia Energy - Advanced Imaging

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

    Advanced Imaging Home Transportation Energy Predictive Simulation of Engines Reacting Flow Experiments Advanced Imaging Advanced ImagingAshley Otero2015-10-30T01:47:37+00:00...

  10. Heart wall velocimetry and exogenous contrast-based cardiac flow imaging in Drosophila melanogaster using Doppler optical coherence tomography

    E-Print Network [OSTI]

    Choma, Michael A.

    Drosophila melanogaster (fruit fly) is a central organism in biology and is becoming increasingly important in the cardiovascular sciences. Prior work in optical imaging of the D. melanogaster heart has focused on static ...

  11. Using Euler Diagrams in Traditional Library Environments

    E-Print Network [OSTI]

    Verroust-Blondet, Anne

    Using Euler Diagrams in Traditional Library Environments Jīer^ome Thi`evre, Marie-Luce Viaud 1 INA for traditional library environments, which allows the user to elaborate easily and efficiently new strategies one is an interactive representation of the structures composing the documentary kernel of the library

  12. Combinatorische Algoritmen: Binary Decision Diagrams, Deel III

    E-Print Network [OSTI]

    Kosters, Walter

    Decision Diagram (BDD) en hebben we Algoritme C gezien die ons snel het aantal oplossingen van f(x) = 1 door Algoritme B dat oplossingen met een maximaal gewicht kan genereren. In dit deel zullen we uitwerkingen bekijken van Algoritme B (Hoofdstuk 2) en passen we daarna Algoritme C aan om de genererende

  13. Energy Flow: Flow Charts Illustrating United States Energy Resources and Usage, from Lawrence Livermore National Laboratory

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Decision makers have long recognized the importance of visualizing energy and material flows in a way that distinguishes between resources, transformations and services. Research priorities can be defined in terms of changes to the flows, and the consequences of policy or technology shifts can be traced both upstream and downstream. The usefulness of this top-down view is limited by the level of detail that can be conveyed in a single image. We use two techniques to balance information content with readability. First we employe visualization techniques, such as those embodied in the energy Sankey diagram below (Figure 1), to display both qualitative (relative line weight) and quantitative (listed values) information in a reader-friendly package. The second method is to augment static images with dynamic, scalable digital content containing multiple layers (e.g. energy, carbon and economic data). This transitions the audience from that of a passive reader to an active user of the information. When used in conjunction these approaches enable relatively large, interconnected processes to be described and analyzed efficiently. [copied from the description at http://en.openei.org/wiki/LLNL_Energy_Flow_Charts#cite_note-1

  14. Study on multiphase flow and mixing in semidry flue gas desulfurization with a multifluid alkaline spray generator using particle image velocimetry

    SciTech Connect (OSTI)

    Zhou, Y.G.; Wang, D.F.; Zhang, M.C. [Shanghai Jiao Tong University, Shanghai (China)

    2009-06-15

    Particle image velocimetry (PIV) technique was used to measure the velocity fields of gas-droplet-solid multiphase flow in the experimental setup of a novel semidry flue gas desulfurization process with a multifluid alkaline spray generator. The flow structure, mixing characteristic, and interphase interaction of gas-droplet-solid multiphase flow were investigated both in the confined alkaline spray generator and in the duct bent pipe section. The results show that sorbent particles in the confined alkaline spray generator are entrained into the spray core zone by a high-speed spray jet and most of the sorbent particles can be effectively humidified by spray water fine droplets to form aqueous lime slurry droplets. Moreover, a minimum amount of air stream in the generator is necessary to achieve higher collision humidification efficiency between sorbent particles and spray water droplets and to prevent the possible deposition of fine droplets on the wall. The appropriate penetration length of the slurry droplets from the generator can make uniform mixing between the formed slurry droplets and main air stream in the duct bent pipe section, which is beneficial to improving sulfur dioxide removal efficiency and to preventing the deposition of droplets on the wall.

  15. Velocity and concentration studies of flowing suspensions by nuclear magnetic resonance imaging. Technical progress report, April--June 1996

    SciTech Connect (OSTI)

    1997-05-01

    Our search for a suitable combination of imageable particles in a carrier liquid which will not dissolve the particles has led us to try pharmaceutical particles in silicon oil. This combination doses not seem to last long enough for adequate NMR measurements. Results are discussed.

  16. From Hubble diagrams to scale factors

    E-Print Network [OSTI]

    Thomas Schucker; Andre Tilquin

    2005-06-20

    We present a lower bound on the radius of the universe today $a_0$ and a monotonicity constraint on the Hubble diagram. Our theoretical input is Einstein's kinematics and maximally symmetric universes. Present supernova data yield $a_0 > 1.2\\cdot 10^{26}$ m. A first attempt to quantify the monotonicity constraint is described. We do not see any indication of non-monotonicity.

  17. Density-Enthalpy Phase Diagram 0D Boiler Simulation

    E-Print Network [OSTI]

    Vuik, Kees

    Density-Enthalpy Phase Diagram 0D Boiler Simulation Finite Element Method Further Research Finite Transitions #12;Density-Enthalpy Phase Diagram 0D Boiler Simulation Finite Element Method Further Research;Density-Enthalpy Phase Diagram 0D Boiler Simulation Finite Element Method Further Research Goal

  18. Examples on Typesetting Commutative Diagrams Using X Y -pic

    E-Print Network [OSTI]

    Chen, Xiao-Wu

    Examples on Typesetting Commutative Diagrams Using X Y -pic M. Alsani Edition 1 E-mail: alsani using X Y -pic's \\xymatrixf...g command which view commutative diagrams as \\matrix-like diagrams". The printout is an attempt to introduce the complete newcomer to X Y -pic. July 10, 2001 #12; Contents 1

  19. Ultra-fast Imaging of Two-Phase Flow in Structured Monolith Reactors; Techniques and Data Analysis

    E-Print Network [OSTI]

    Heras, Jonathan Jaime

    2.1.9 NMR SPECTROMETER (HARDWARE) 2.2. MAGNETIC RESONANCE IMAGING 2.2.1 MAGNETIC FIELD GRADIENTS 2.2.2 SLICE SELECTION 2.2.3 K-SPACE VECTOR FORMALISM... , kB is the Boltzmann constant, T is the absolute temperature, ? is the Planck constant divided by 2pi, and ? is the gyromagnetic ratio. The gyromagnetic ratio is nucleus specific, and has a value of 42.58 MHz/Tesla for 1H. The spin...

  20. Gas-flow measurements in a jet flame using cross-correlation of high speed particle-images

    SciTech Connect (OSTI)

    Shioji, Masahiro; Kawasaki, Kiyoshi; Kawanabe, Hiroshi; Ikegami, Makoto

    1999-07-01

    Time changes of a two-dimensional distribution of velocities in a methane jet flame and a nitrogen jet are measured by cross-correlation particle image velocimetry (PIV). The mean velocity and the intensity of turbulence are obtained and compared with those measured by HWA in order to ascertain the accuracy of PIV. Furthermore, the effect of combustion on turbulence characteristics is discussed based on the deformation of eddies with time change and distribution of time and spatial scales.

  1. Sinc function representation and three-loop master diagrams

    SciTech Connect (OSTI)

    Easther, Richard; Guralnik, Gerald; Hahn, Stephen

    2001-04-15

    We test the Sinc function representation, a novel method for numerically evaluating Feynman diagrams, by using it to evaluate the three-loop master diagrams. Analytical results have been obtained for all these diagrams, and we find excellent agreement between our calculations and the exact values. The Sinc function representation converges rapidly, and it is straightforward to obtain accuracies of 1 part in 10{sup 6} for these diagrams and with longer runs we found results better than 1 part in 10{sup 12}. Finally, this paper extends the Sinc function representation to diagrams containing massless propagators.

  2. Critical point analysis of phase envelope diagram

    SciTech Connect (OSTI)

    Soetikno, Darmadi; Siagian, Ucok W. R.; Kusdiantara, Rudy Puspita, Dila Sidarto, Kuntjoro A. Soewono, Edy; Gunawan, Agus Y.

    2014-03-24

    Phase diagram or phase envelope is a relation between temperature and pressure that shows the condition of equilibria between the different phases of chemical compounds, mixture of compounds, and solutions. Phase diagram is an important issue in chemical thermodynamics and hydrocarbon reservoir. It is very useful for process simulation, hydrocarbon reactor design, and petroleum engineering studies. It is constructed from the bubble line, dew line, and critical point. Bubble line and dew line are composed of bubble points and dew points, respectively. Bubble point is the first point at which the gas is formed when a liquid is heated. Meanwhile, dew point is the first point where the liquid is formed when the gas is cooled. Critical point is the point where all of the properties of gases and liquids are equal, such as temperature, pressure, amount of substance, and others. Critical point is very useful in fuel processing and dissolution of certain chemicals. Here in this paper, we will show the critical point analytically. Then, it will be compared with numerical calculations of Peng-Robinson equation by using Newton-Raphson method. As case studies, several hydrocarbon mixtures are simulated using by Matlab.

  3. Preliminary Master Logic Diagram for ITER operation

    SciTech Connect (OSTI)

    Cadwallader, L.C.; Taylor, N.P.; Poucet, A.E.

    1998-04-01

    This paper describes the work performed to develop a Master Logic Diagram (MLD) for the operations phase of the International Thermonuclear Experimental Reactor (ITER). The MLD is a probabilistic risk assessment tool used to identify the broad set of potential initiating events that could lead to an offsite radioactive or toxic chemical release from the facility under study. The MLD described here is complementary to the failure modes and effects analyses (FMEAs) that have been performed for ITER`s major plant systems in the engineering evaluation of the facility design. While the FMEAs are a bottom-up or component level approach, the MLD is a top-down or facility level approach to identifying the broad spectrum of potential events. Strengths of the MLD are that it analyzes the entire plant, depicts completeness in the accident initiator process, provides an independent method for identification, and can also identify potential system interactions. MLDs have been used successfully as a hazard analysis tool. This paper describes the process used for the ITER MLD to treat the variety of radiological and toxicological source terms present in the ITER design. One subtree of the nineteen page MLD is shown to illustrate the levels of the diagram.

  4. Instrumentation for parallel magnetic resonance imaging

    E-Print Network [OSTI]

    Brown, David Gerald

    2007-04-25

    FIGURE 1 An example of a 2D Fourier encoded pulse sequence for MR imaging ..............20 2 Block diagram for an ideal analog mixer with an output bandpass filter ............28 3 Undersampling of a bandpass signal...

  5. Topological phase diagram and saddle point singularity in a tunable...

    Office of Scientific and Technical Information (OSTI)

    Topological phase diagram and saddle point singularity in a tunable topological crystalline insulator Citation Details In-Document Search This content will become publicly...

  6. Oak Ridge K-25 Site Technology Logic Diagram. Volume 2, Technology Logic Diagrams

    SciTech Connect (OSTI)

    Fellows, R.L.

    1993-02-26

    The Oak Ridge K-25 Technology Logic Diagram (TLD), a decision support tool for the K-25 Site, was developed to provide a planning document that relates envirorunental restoration and waste management problems at the Oak Ridge K-25 Site to potential technologies that can remediate these problems. The TLD technique identifies the research necessary to develop these technologies to a state that allows for technology transfer and application to waste management, remedial action, and decontamination and decommissioning activities. The TLD consists of four separate volumes-Vol. 1, Vol. 2, Vol. 3A, and Vol. 3B. Volume 1 provides introductory and overview information about the TLD. This volume, Volume 2, contains logic diagrams with an index. Volume 3 has been divided into two separate volumes to facilitate handling and use.

  7. Disordering transitions in vortex matter: peak effect and phase diagram

    E-Print Network [OSTI]

    Scalettar, Richard T.

    Disordering transitions in vortex matter: peak effect and phase diagram C.J. Olson a,*, C- order nature of this transition. In YBCO a rapid increase in Jc as a function of magnetic field vortex phase diagram as a function of magnetic field and temperature. For increasing field or temperature

  8. Drawing Area-Proportional Venn-3 Diagrams with Convex Polygons

    E-Print Network [OSTI]

    Kent, University of

    Drawing Area-Proportional Venn-3 Diagrams with Convex Polygons Peter Rodgers1 , Jean Flower2 , Gem Modelling Group, University of Brighton, UK {g.e.stapleton,john.howse}@brighton.ac.uk Abstract. Area-proportional intersections have a specified numerical value. In these diagrams, the areas of the re- gions are in proportion

  9. The (magnetized) effective QCD phase diagram

    E-Print Network [OSTI]

    Alejandro Ayala

    2015-09-02

    I present the highlights of a recent study of the effective QCD phase diagram on the temperature T and quark chemical potential mu plane, where the strong interactions are modeled using the linear sigma model coupled to quarks. The phase transition line is found from the effective potential at finite T and mu taking into account the plasma screening effects. We find the location of the critical end point (CEP) to be (mu^CEP/T_c,T^CEP/T_c) \\sim (1.2,0.8), where T_c is the (pseudo)critical temperature for the crossover phase transition at vanishing mu. This location lies within the region found by lattice inspired calculations. Since the linear sigma model does not exhibit confinement, I argue that the location is due to the proper treatment of the plasma screening effects and not to the size of the confining scale. I also comment on the extension of this study to determine the dependence of the CEP's location on the strength of an external magnetic field.

  10. Photospheric magnitude diagrams for type II supernovat: A promising tool to compute distances

    SciTech Connect (OSTI)

    RodrŪguez, ”smar; Clocchiatti, Alejandro; Hamuy, Mario, E-mail: olrodrig@astro.puc.cl [Millennium Institute of Astrophysics, Casilla 36-D, Santiago (Chile)

    2014-12-01

    We develop an empirical color-based standardization for Type II supernovae (SNe II), equivalent to the classical surface brightness method given in Wesselink. We calibrate this standardization using SNe II with host galaxy distances measured using Cepheids, and a well-constrained shock breakout epoch and extinction due to the host galaxy. We estimate the reddening with an analysis of the B Ė V versus V Ė I color-color curves, similar to that of Natali et al. With four SNe II meeting the above requirements, we build a photospheric magnitude versus color diagram (similar to an H-R diagram) with a dispersion of 0.29 mag. We also show that when using time since shock breakout instead of color as the independent variable, the same standardization gives a dispersion of 0.09 mag. Moreover, we show that the above time-based standardization corresponds to the generalization of the standardized candle method of Hamuy and Pinto for various epochs throughout the photospheric phase. To test the new tool, we construct Hubble diagrams for different subsamples of 50 low-redshift (cz < 10{sup 4} km s{sup Ė1}) SNe II. For 13 SNe within the Hubble flow (cz {sub CMB} > 3000 km s{sup Ė1}) and with a well-constrained shock breakout epoch we obtain values of 68-69 km s{sup Ė1} Mpc{sup Ė1} for the Hubble constant and a mean intrinsic scatter of 0.12 mag or 6% in relative distances.

  11. Phase diagram of Josephson junction between

    Office of Scientific and Technical Information (OSTI)

    diagram of Josephson junction betweensandssuperconductors in the dirty limit...

  12. Anisotropic flow

    E-Print Network [OSTI]

    S. A. Voloshin

    2002-11-20

    Recent experimental results on directed and elliptic flow, theoretical developments, and new techniques for anisotropic flow analysis are reviewed.

  13. RING-DIAGRAM ANALYSIS WITH GONG++ T. Corbard 1 , C. Toner 1 , F. Hill 1 , K. D. Hanna 1 , D. A. Haber 2 , B. W. Hindman 2 , and

    E-Print Network [OSTI]

    Corbard, Thierry

    1 RING-DIAGRAM ANALYSIS WITH GONG++ T. Corbard 1 , C. Toner 1 , F. Hill 1 , K. D. Hanna 1 , D. A-HEPL, Stanford, CA 94305-4085, USA ABSTRACT Images from the updated GONG network (GONG+) have been produced since of the new GONG pipeline (GONG++) (Hill et al., 2003). We present here the data-cube, 3D power spectra

  14. High throughput analysis of samples in flowing liquid

    DOE Patents [OSTI]

    Ambrose, W. Patrick (Los Alamos, NM); Grace, W. Kevin (Los Alamos, NM); Goodwin, Peter M. (Los Alamos, NM); Jett, James H. (Los Alamos, NM); Orden, Alan Van (Fort Collins, CO); Keller, Richard A. (White Rock, NM)

    2001-01-01

    Apparatus and method enable imaging multiple fluorescent sample particles in a single flow channel. A flow channel defines a flow direction for samples in a flow stream and has a viewing plane perpendicular to the flow direction. A laser beam is formed as a ribbon having a width effective to cover the viewing plane. Imaging optics are arranged to view the viewing plane to form an image of the fluorescent sample particles in the flow stream, and a camera records the image formed by the imaging optics.

  15. An optical investigation of air particle flows.†

    E-Print Network [OSTI]

    McCluskey, Denise R

    This thesis is a fundamental study of air-particle flow fields where the experimental parameters are characteristics of coal-fired electricity generating stations. The optical flow field measurement technique Particle Image Velocimetry (PIV...

  16. Development of a three-dimensional particle image velocimetry algorithm and analysis of synthetic and experimental flows in three-dimensions†

    E-Print Network [OSTI]

    Costes, Sylvain Vincent

    1994-01-01

    This study concerns with the development of a simple three-dimensional technique to determine the velocity of fluid by tracing the motion of seeded particles in a flow in three-dimensions. A correction for light refraction ...

  17. Sequential Voronoi diagram calculations using simple chemical reactions

    E-Print Network [OSTI]

    Costello, Ben de Lacy; Adamatzky, Andy

    2012-01-01

    In our recent paper [de Lacy Costello et al. 2010] we described the formation of complex tessellations of the plane arising from the various reactions of metal salts with potassium ferricyanide and ferrocyanide loaded gels. In addition to producing colourful tessellations these reactions are naturally computing generalised Voronoi diagrams of the plane. The reactions reported previously were capable of the calculation of three distinct Voronoi diagrams of the plane. As diffusion coupled with a chemical reaction is responsible for the calculation then this is achieved in parallel. Thus an increase in the complexity of the data input does not utilise additional computational resource. Additional benefits of these chemical reactions is that a permanent record of the Voronoi diagram calculation (in the form of precipitate free bisectors) is achieved, so there is no requirement for further processing to extract the calculation results. Previously it was assumed that the permanence of the results was also a potenti...

  18. Phase diagram of the five-vertex model

    SciTech Connect (OSTI)

    Gulacsi, M. (Scuola Internazionale Superiore di Studi Avanzati, Strada Costiera 11, Miramare, 34014 Trieste (Italy) Theory Division, Los Alamos National Laboratory, MS-B262, Los Alamos, New Mexico 87545 (United States)); Van Beijeren, H. (Institute for Theoretical Physics, University of Utrecht (Netherlands)); Levi, A.C. (Scuola Internazionale Superiore di Studi Avanzati, Strada Costiera 11, Miramare, 34014 Trieste (Italy) Universita di Genova, Dipartimento di Fisica, 16146 Genova (Italy))

    1993-04-01

    Within the ice-type models, the solution of the five-vertex model is obtained with the use of the Bethe ansatz. Since the allowed number of vertex types is odd, the arrow-reversal symmetry of the system is broken by construction. Due to this, the exact solution obtained and the phase diagram are very different from those of the symmetric six-vertex model. A connection to the asymmetric six-vertex model (of which the five-vertex model is an extreme case) is made. The different regions of the phase diagram are described and the transitions between them are analyzed. Several aspects of the phase diagram are unusual, i.e., the ordered phases (both ferroelectric and antiferroelectric) are frozen-in phases and the disordered phase is replaced by a ferrielectric phase. In the free-fermion case, the known results of the modified KDP model are recovered.

  19. 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSSIMIC) M07-4 Myocardial Blood Flow from Dynamic PET

    E-Print Network [OSTI]

    Duncan, James S.

    2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSSIMIC) M07 to CT or MR!. Independent Component Analysis (lCA) is an established technique in signal processing [1

  20. SIFT Flow: Dense Correspondence across Scenes and its Applications

    E-Print Network [OSTI]

    Freeman, William T.

    2010-05-08

    While image alignment has been studied in different areas of computer vision for decades, aligning images depicting different scenes remains a challenging problem. Analogous to optical flow where an image is aligned to its ...

    1. SIFT Flow: Dense Correspondence across Scenes and its Applications

      E-Print Network [OSTI]

      Liu, Ce

      While image alignment has been studied in different areas of computer vision for decades, aligning images depicting different scenes remains a challenging problem. Analogous to optical flow, where an image is aligned to ...

    2. SINR Diagrams: Convexity and its Applications in Wireless Networks

      E-Print Network [OSTI]

      SINR Diagrams: Convexity and its Applications in Wireless Networks Chen Avin Yuval Emek Erez Kantor and quality of connections in a wireless network are described by physical models such as the signal the behavior of wireless networks, and may play a key role in the development of suitable algorithms

    3. Variants of Jump Flooding Algorithm for Computing Discrete Voronoi Diagrams

      E-Print Network [OSTI]

      Tan, Tiow Seng

      ] that builds a cone for every input (point) site and renders these cones to obtain the Voronoi diagram as the lower envelop of these cones. Denny [2] presents a similar method using a pre-computed texture in place, their speeds reduce with the increase in the number of sites. Recent advances in the graphics processing unit

    4. Authorized Investigator's Laboratory Survey Record Room Diagram and Survey Instruments

      E-Print Network [OSTI]

      Sniadecki, Nathan J.

      . 4) All records must be available for inspection and kept for 3 calendar years. Survey InstrumentsAuthorized Investigator's Laboratory Survey Record Room Diagram and Survey Instruments u Instrument Code * Model # Serial # Type Action Level Instrument action level is twice the bkg count

    5. Feature Diagrams and Logics: There and Back Again Krzysztof Czarnecki

      E-Print Network [OSTI]

      Czarnecki, Krzysztof

      Feature Diagrams and Logics: There and Back Again Krzysztof Czarnecki University of Waterloo fami- lies. In their basic form, feature models contain manda- tory/optional features, feature groups in prod- uct families [15, 11, 4]. In their basic form, feature mod- els contain mandatory

    6. 6d SCFTs, 5d Dualities and Tao Web Diagrams

      E-Print Network [OSTI]

      Hayashi, Hirotaka; Lee, Kimyeong; Yagi, Futoshi

      2015-01-01

      We propose 5d descriptions of 6d ${\\cal N}=(1,0)$ superconformal field theories arising from Type IIA brane configurations with an $O8^-$-plane. We T-dualize the brane diagram along a compactification circle and obtain a 5-brane web diagram with two $O7^-$-planes. The gauge theory description of the resulting 5d theory for a given 6d superconformal field theory is not unique, and we argue that the non-uniqueness leads to various dual 5d gauge theories. There are three sources which lead to the 5d dualities. One type comes from either resolving both or one of the two $O7^-$-planes. The two situations give us two different ways to read off a 5d gauge theory from essentially the same web diagram. The second type originates from different distributions of D5 or D7-branes, shifting the gauge group ranks of the 5d quiver theory. The last one comes from the 90 or 45 degree rotations of the 5-brane web diagram, which is a part of the $SL(2,\\mathbb{Z})$ duality of Type IIB string theory, leading to completely differen...

    7. A Retargetable Framework for Interactive Diagram Recognition Edward H. Lank

      E-Print Network [OSTI]

      Lank, Edward

      @cs.sfsu.edu Abstract The design of new diagram recognition systems remains a challenging problem. Ideally, recognition, researchers face the challenge of designing robust recognition systems that work on real input data be augmented with domain specific recognition components. Recognition systems have been designed to analyze UML

    8. Power-Aware FPGA Logic Synthesis Using Binary Decision Diagrams

      E-Print Network [OSTI]

      Tessier, Russell

      with signal switching estimates to achieve power-efficient circuit networks. The results of synthesis and subsequent power-aware technology mapping are evaluated using two distinct physical design platforms Circuits]: Design Aids General Terms Algorithms Keywords FPGA, Binary decision diagram, Dynamic power 1

    9. S-700A MOSSBAUER DRIVE INTERCONNECTION DIAGRAM FOR

      E-Print Network [OSTI]

      Browder, Tom

      S-700A MOSSBAUER DRIVE INTERCONNECTION DIAGRAM FOR C.A.OPERATION WITH COMPUTER CUMPUEK WITH K A OK OPERATION D V -LIY I SCALER RESET DATA The S-700A drive and K-4 motor can also be used in Constant Velocity the constant velocity motion. The duty cycle is about 85%, and there is provision for the gating of data so

    10. Cloud computing and hyperbolic Voronoi diagrams on the sphere

      E-Print Network [OSTI]

      Pavel Bleher; Caroline Shouraboura

      2012-03-13

      In this work we study the minimization problem for the total distance in a cloud computing network on the sphere. We give a solution to this problem in terms of hyperbolic Voronoi diagrams on the sphere. We present results of computer simulations illustrating the solution.

    11. Probe the QCD phase diagram with ?-mesons in high energy nuclear collisions

      E-Print Network [OSTI]

      B. Mohanty; N. Xu

      2009-01-03

      High-energy nuclear collision provide a unique tool to study the strongly interacting medium. Recent results from the Relativistic Heavy Ion Collider (RHIC) on \\phi-meson production has revealed the formation of a dense partonic medium. The medium constituents are found to exhibit collective behaviour initiated due to partonic interactions in the medium. We present a brief review of the recent results on \\phi production in heavy-ion collisions at RHIC. One crucial question is where, in the phase diagram, does the transition happen for the matter changing from hadronic to partonic degrees of freedom. We discuss how \\phi-meson elliptic flow in heavy-ion collisions can be used for the search of the QCD phase boundary.

    12. The cone of Betti diagrams over a hypersurface ring of low embedding dimension

      E-Print Network [OSTI]

      Berkesch, Christine; Erman, Daniel; Gibbons, Courtney

      2011-01-01

      We give a complete description of the cone of Betti diagrams over a standard graded hypersurface ring of the form k[x,y]/, where q is a homogeneous quadric. We also provide a finite algorithm for decomposing Betti diagrams, including diagrams of infinite projective dimension, into pure diagrams. Boij--Soederberg theory completely describes the cone of Betti diagrams over a standard graded polynomial ring; our result provides the first example of another graded ring for which the cone of Betti diagrams is entirely understood.

    13. Imaging, Characterizing, and Modeling of Fracture Networks and...

      Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

      Reservoirs Imaging, Characterizing, and Modeling of Fracture Networks and Fluid Flow in EGS Reservoirs Project objectives: Improve image resolution for microseismicimaging and...

    14. Higher-order gravitational lensing reconstruction using Feynman diagrams

      SciTech Connect (OSTI)

      Jenkins, Elizabeth E.; Manohar, Aneesh V.; Yadav, Amit P.S.; Waalewijn, Wouter J. E-mail: amanohar@ucsd.edu E-mail: ayadav@physics.ucsd.edu

      2014-09-01

      We develop a method for calculating the correlation structure of the Cosmic Microwave Background (CMB) using Feynman diagrams, when the CMB has been modified by gravitational lensing, Faraday rotation, patchy reionization, or other distorting effects. This method is used to calculate the bias of the Hu-Okamoto quadratic estimator in reconstructing the lensing power spectrum up to †O†(?{sup 4}) in the lensing potential ?. We consider both the diagonal noise TT TT, EB EB, etc. and, for the first time, the off-diagonal noise TT TE, TB EB, etc. The previously noted large †O†(?{sup 4}) term in the second order noise is identified to come from a particular class of diagrams. It can be significantly reduced by a reorganization of the ? expansion. These improved estimators have almost no bias for the off-diagonal case involving only one B component of the CMB, such as EE EB.

    15. Oak Ridge K-25 Site Technology Logic Diagram

      SciTech Connect (OSTI)

      Fellows, R.L. (ed.)

      1993-02-26

      The Oak Ridge K-25 Technology Logic Diagram (TLD), a decision support tool for the K-25 Site, was developed to provide a planning document that relates environmental restoration and waste management problems at the Oak Ridge K-25 Site to potential technologies that can remediate these problems. The TLD technique identifies the research necessary to develop these technologies to a state that allows for technology transfer and application to waste management, remedial action, and decontamination and decommissioning activities. The TLD consists of four separate volumes-Vol. 1, Vol. 2, Vol. 3A, and Vol. 3B. Volume 1 provides introductory and overview information about the TLD. Volume 2 contains logic diagrams. Volume 3 has been divided into two separate volumes to facilitate handling and use. This report is part A of Volume 3 concerning characterization, decontamination, and dismantlement.

    16. Size dependent phase diagrams of Nickel-Carbon nanoparticles

      E-Print Network [OSTI]

      Magnin, Yann; Amara, Hakim; Ducastelle, FranÁois; Bichara, Christophe

      2015-01-01

      The carbon rich phase diagrams of nickel-carbon nanoparticles, relevant to catalysis and catalytic chemical vapor deposition synthesis of carbon nanotubes, are calculated for system sizes up to about 3 nanometers (807 Ni atoms). A tight binding model for interatomic interactions drives the Grand Canonical Monte Carlo simulations used to locate solid, core/shell and liquid stability domains, as a function of size, temperature and carbon chemical potential or concentration. Melting is favored by carbon incorporation from the nanoparticle surface, resulting in a strong relative lowering of the eutectic temperature and a phase diagram topology different from the bulk one. This should be taken into account in our understanding of the nanotube growth mechanisms.

    17. Oak Ridge K-25 Site Technology Logic Diagram

      SciTech Connect (OSTI)

      Fellows, R.L.

      1993-02-26

      The Oak Ridge K-25 Technology Logic Diagram (TLD), a decision support tool for the K-25 Site, was developed to provide a planning document that relates envirorunental restoration and waste management problems at the Oak Ridge K-25 Site to potential technologies that can remediate these problems. The TLD technique identifies the research necessary to develop these technologies to a state that allows for technology transfer and application to waste management, remedial action, and decontamination and decommissioning activities. The TLD consists of four separate volumes-Vol. 1, Vol. 2, Vol. 3A, and Vol. 3B. Volume 1 provides introductory and overview information about the TLD. This volume, Volume 2, contains logic diagrams with an index. Volume 3 has been divided into two separate volumes to facilitate handling and use.

    18. 6d SCFTs, 5d Dualities and Tao Web Diagrams

      E-Print Network [OSTI]

      Hirotaka Hayashi; Sung-Soo Kim; Kimyeong Lee; Futoshi Yagi

      2015-09-10

      We propose 5d descriptions of 6d ${\\cal N}=(1,0)$ superconformal field theories arising from Type IIA brane configurations with an $O8^-$-plane. We T-dualize the brane diagram along a compactification circle and obtain a 5-brane web diagram with two $O7^-$-planes. The gauge theory description of the resulting 5d theory for a given 6d superconformal field theory is not unique, and we argue that the non-uniqueness leads to various dual 5d gauge theories. There are three sources which lead to the 5d dualities. One type comes from either resolving both or one of the two $O7^-$-planes. The two situations give us two different ways to read off a 5d gauge theory from essentially the same web diagram. The second type originates from different distributions of D5 or D7-branes, shifting the gauge group ranks of the 5d quiver theory. The last one comes from the 90 or 45 degree rotations of the 5-brane web diagram, which is a part of the $SL(2,\\mathbb{Z})$ duality of Type IIB string theory, leading to completely different group structure. These lead to a very rich class of dualities between 5d gauge theories whose UV completion is the same 6d superconformal field theory. We also explore Higgsing of the 6d theories and their 5d counterparts. Decoupling the same flavors from the dual 5d theories gives rise to another dual 5d theories whose UV completion is the same 5d superconformal field theory. Finally we propose the 6d description of 5d theories which is obtained by a generalization of 5d $T_N$ theories with additional flavors, which turns out not to be in the class of Type IIA brane construction generically.

    19. Impact of Impulse Stops on Pedestrian Flow

      E-Print Network [OSTI]

      Kwak, Jaeyoung; Luttinen, Tapio; Kosonen, Iisakki

      2015-01-01

      We numerically study the impact of impulse stops on pedestrian flow for a straight corridor with multiple attractions. The impulse stop is simulated by the switching behavior model, a function of the social influence strength and the number of attendees near the attraction. When the pedestrian influx is low, one can observe a stable flow where attendees make a complete stop at an attraction and then leave the attraction after a certain amount of time. When the pedestrian influx is high, an unstable flow is observed for strong social influence. In the unstable flow, attendees near the attraction are crowded out from the clusters by others due to the interpersonal repulsion. The expelled pedestrians impede the pedestrian traffic between the left and right boundaries of the corridor. These collective patterns of pedestrian flow are summarized in a schematic phase diagram.

    20. (An)isotropy of the Hubble diagram: comparing hemispheres

      E-Print Network [OSTI]

      Dominik J. Schwarz; Bastian Weinhorst

      2007-09-12

      We test the isotropy of the Hubble diagram. At small redshifts, this is possible without assumptions on the cosmic inventory and provides a fundamental test of the cosmological principle. At higher redshift we check for the self-consistency of the LambdaCDM model. At small redshifts, we use public supernovae (SNe) Ia data to determine the deceleration parameter q_0 and the SN calibration on opposite hemispheres. For the complete data sets we fit Omega_M and the SN calibration on opposite hemispheres. A statistically significant anisotropy of the Hubble diagram at redshifts z 95% C.L.). While data from the North Galactic hemisphere favour the accelerated expansion of the Universe, data from the South Galactic hemisphere are not conclusive. The hemispheric asymmetry is maximal toward a direction close to the equatorial poles. The discrepancy between the equatorial North and South hemispheres shows up in the SN calibration. For the LambdaCDM model fitted to all available SNe, we find the same asymmetry. The alignment of discrepancies between hemispheric Hubble diagrams with the equatorial frame seems to point toward a systematic error in the SN search, observation, analysis or data reduction. We also find that our model independent test cannot exclude the case of the deceleration of the expansion at a statistically significant level.

    1. Flows and Non-thermal Velocities in Solar Active Regions Observed with the Extreme-ultraviolet Imaging Spectrometer on Hinode: A Tracer of Active Region Sources of Heliospheric Magnetic Fields?

      E-Print Network [OSTI]

      G. A. Doschek; H. P. Warren; J. T. Mariska; K. Muglach; J. L. Culhane; H. Hara; T Watanabe

      2008-07-17

      From Doppler velocity maps of active regions constructed from spectra obtained by the Extreme-ultraviolet Imaging Spectrometer (EIS) on the Hinode spacecraft we observe large areas of outflow (20-50 km/s) that can persist for at least a day. These outflows occur in areas of active regions that are faint in coronal spectral lines formed at typical quiet Sun and active region temperatures. The outflows are positively correlated with non-thermal velocities in coronal plasmas. The bulk mass motions and non-thermal velocities are derived from spectral line centroids and line widths, mostly from a strong line of Fe XII at 195.12 Angstroms. The electron temperature of the outflow regions estimated from an Fe XIII to Fe XII line intensity ratio is about 1.2-1.4 MK. The electron density of the outflow regions derived from a density sensitive intensity ratio of Fe XII lines is rather low for an active region. Most regions average around 7E10+8 cm(-3), but there are variations on pixel spatial scales of about a factor of 4. We discuss results in detail for two active regions observed by EIS. Images of active regions in line intensity, line width, and line centroid are obtained by rastering the regions. We also discuss data from the active regions obtained from other orbiting spacecraft that support the conclusions obtained from analysis of the EIS spectra. The locations of the flows in the active regions with respect to the longitudinal photospheric magnetic fields suggest that these regions might be tracers of long loops and/or open magnetic fields that extend into the heliosphere, and thus the flows could possibly contribute significantly to the solar wind.

    2. Extended Abstract: Constructing Area-Proportional Venn and Euler Diagrams with Three Circles

      E-Print Network [OSTI]

      Kent, University of

      Extended Abstract: Constructing Area-Proportional Venn and Euler Diagrams with Three Circles to their respective populations; such diagrams are referred to as area-proportional [1] and are intended to enhance readability. In [1], the authors describe an algorithm for constructing area-proportional 3-Venn diagrams

    3. A CSP View on UMLRT structure diagrams Clemens Fischer, ErnstRudiger Olderog and Heike Wehrheim

      E-Print Network [OSTI]

      Habel, Annegret

      A CSP View on UML≠RT structure diagrams Clemens Fischer, Ernst≠R®udiger Olderog and Heike Wehrheim UML≠RT structure diagrams together with the formal method CSP≠OZ combining CSP and Object≠Z. While CSP≠OZ is used for specifying the system components themselves (by CSP≠OZ classes), UML≠RT diagrams provide

    4. Biomechanics Volumetric imaging of fish

      E-Print Network [OSTI]

      Lauder, George V.

      Biomechanics Volumetric imaging of fish locomotion Brooke E. Flammang1,*, George V. Lauder1, Daniel stability in a complex fluid environ- ment. We used a new approach, a volumetric velocimetry imaging system into the caudal fin vortex wake. These results show that volumetric imaging of biologi- cally generated flow

    5. The Calculus of Signal Flow Diagrams I: Linear Relations on Streams

      E-Print Network [OSTI]

      Sobocinski, Pawel

      , sequential ; and parallel composition. C - irc C - irc x x k k Circ In this paper we concentrate components in the leftmost three columns, which we refer to as being in C-irc , the signal enters from the

    6. ANUDlSiTM-40 Load Flow Analysis: Base Cases, Data, Diagrams,...

      Office of Scientific and Technical Information (OSTI)

      To simplify data collection requirements and illustrate key concepts, a representative power system in the United States - the Commonwealth Edison Company (ComEd) in northern...

    7. Taylor Expansion Diagrams: A Canonical Representation for Verification of Data Flow Designs

      E-Print Network [OSTI]

      Ciesielski, Maciej

      series expansion that allows to model word-level signals as alge- braic symbols. This power increase in the size and complexity of digital systems has made it essential to address verification issues verification meth- ods, such as theorem proving, property and model checking, equiv- alence checking, etc

    8. ESPC Overview: Cash Flows, Scenarios, and Associated Diagrams for Energy Savings Performance Contracts

      SciTech Connect (OSTI)

      Tetreault, T.; Regenthal, S.

      2011-05-01

      This document is meant to inform state and local decision makers about the process of energy savings performance contracts, and how projected savings and allocated energy-related budgets can be impacted by changes in utility prices.

    9. ESPC Overview. Cash Flows, Scenarios, and Associated Diagrams for Energy Savings Performance Contracts

      SciTech Connect (OSTI)

      Tetreault, T.; Regenthal, S.

      2011-05-01

      This document is meant to inform state and local decision makers about the process of energy savings performance contracts, and how projected savings and allocated energy-related budgets can be impacted by changes in utility prices.

    10. Energy Flow Diagram | U.S. DOE Office of Science (SC)

      Office of Science (SC) Website

      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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26thIWalter H. Zinn,Christopher FeckoJamesScience for Energy

    11. Smart Grid Conceptual Actors/Data Flow Diagram- Cross Domain Network

      Energy Savers [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 QA:QA J-E-1 SECTION J APPENDIX E LIST OF APPLICABLE DIRECTIVES PursuantEnergy Small Column Ion|Smart Grid 2010

    12. New Developments in Surface Oil Flow Visualization Adam J. Pierce,

      E-Print Network [OSTI]

      Texas at Arlington, University of

      over 10 s. Some investigators prefer kerosene which evaporates rapidly in the low pressure environmentNew Developments in Surface Oil Flow Visualization Adam J. Pierce, Frank K. Lu, Daniel S. Bryant imaging and image processing for studying flows is extended to surface oil flow visualization. The use

    13. Effects of Boundary Conditions on Single-File Pedestrian Flow

      E-Print Network [OSTI]

      Zhang, Jun; Seyfried, Armin

      2015-01-01

      In this paper we investigate effects of boundary conditions on one dimensional pedestrian flow which involves purely longitudinal interactions. Qualitatively, stop-and-go waves are observed under closed boundary condition and dissolve when the boundary is open. To get more detailed information the fundamental diagrams of the open and closed systems are compared using Voronoi-based measurement method. Higher maximal specific flow is observed from the pedestrian movement at open boundary condition.

    14. Effects of photon escape on diagnostic diagrams for HII regions

      E-Print Network [OSTI]

      C. Giammanco; J. E. Beckman; B. Cedres

      2005-04-11

      In this article we first outline the mounting evidence that a significant fraction of the ionizing photons emitted by OB stars within HII regions escape from their immediate surroundings and explain how an HII region structure containing high density contrast in homogeneities facilitates this escape. Next we describe sets of models containing inhomogeneities which are used to predict tracks in the commonly used diagnostic diagrams (based on ratios of emission lines) whose only independent variable is the photon escape fraction, xi. We show that the tracks produced by the models in two of the most cited of these diagrams conform well to the distribution of observed data points, with the models containing optically thick inhomogeneities ("CLUMPY" models) yielding somewhat better agreement than those with optically thin inhomogeneities ("FF" models). We show how variations in the ionization parameter U, derived from emission line ratios, could be due to photon escape. Using a rather wide range of assumptions about the filling factor of dense clumps we find, for a selected set of regions observed in M51 photon escape fraction ranging between 30% and 50%. We show, using oxygen as the test element, that models with different assumptions about the gas inhomogeneity will give variations in the abundance values derived from diagnostic diagrams, but do not claim here to have a fully developed set of diagnostic tools to improve abundance determinations made in this way. We finally propose a combination of line ratios with the absolute Halpha luminosity of a given HII region, which allows us to determine the photon escape fraction, and hence resolve the degeneracy between U and xi.

    15. Equations of state and phase diagrams of hydrogen isotopes

      SciTech Connect (OSTI)

      Urlin, V. D.

      2013-11-15

      A new form of the semiempirical equation of state proposed for the liquid phase of hydrogen isotopes is based on the assumption that its structure is formed by cells some of which contain hydrogen molecules and others contain hydrogen atoms. The values of parameters in the equations of state of the solid (molecular and atomic) phases as well as of the liquid phase of hydrogen isotopes (protium and deuterium) are determined. Phase diagrams, shock adiabats, isentropes, isotherms, and the electrical conductivity of compressed hydrogen are calculated. Comparison of the results of calculations with available experimental data in a wide pressure range demonstrates satisfactory coincidence.

    16. Nuclear-matter--quark-matter phase diagram with strangeness

      SciTech Connect (OSTI)

      Barz, H. W.; Friman, B. L.; Knoll, J.; Schulz, H.

      1989-07-01

      A phenomenological equation of state of strongly interacting matter, including strange degrees of freedom, is presented. It is shown that the hyperon and kaon interactions must be included, in order to obtain a reasonable description of the deconfinement transition at high baryon densities. The consequences of kaon condensation on the nuclear-matter--quark-matter phase diagram are explored. The relative particle abundances obtained in an isentropic expansion of a blob of quark-gluon plasma are presented for different initial conditions. Implications for ultrarelativistic heavy-ion collisions are briefly discussed.

    17. Solid State Electronics (ECE 103) ECE MS Comp Exam, Fall 2013 (a) Draw the energy band diagram of a piece of Si at room temperature (label the diagram) and

      E-Print Network [OSTI]

      California at San Diego, University of

      Solid State Electronics (ECE 103) ≠ ECE MS Comp Exam, Fall 2013 (a) Draw the energy band diagram of a piece of Si at room temperature (label the diagram) and use the band diagram to illustrate the doping (r.t.). (b) Use band diagrams to illustrate the formation of p/n junction. (c) For a p/n+ diode, p-Si

    18. Flow chamber

      DOE Patents [OSTI]

      Morozov, Victor (Manassas, VA)

      2011-01-18

      A flow chamber having a vacuum chamber and a specimen chamber. The specimen chamber may have an opening through which a fluid may be introduced and an opening through which the fluid may exit. The vacuum chamber may have an opening through which contents of the vacuum chamber may be evacuated. A portion of the flow chamber may be flexible, and a vacuum may be used to hold the components of the flow chamber together.

    19. A diagram for the evaporation status of extrasolar planets

      E-Print Network [OSTI]

      Etangs, A L

      2006-01-01

      To describe the evaporation status of the extrasolar planets, we propose to consider an energy diagram in which the potential energy of the planets is plotted versus the energy received by the upper atmosphere. Here we present a basic method to estimate these quantities. For the potential energy, we include the modification of the gravity field by the tidal forces from the parent stars. This description allows a quick estimate of both the escape rate of the atmospheric gas and the lifetime of a planet against the evaporation process. In the energy diagram, we find an evaporation-forbidden region in which a gaseous planet would evaporate in less than 5 billion years. With their observed characteristics, all extrasolar planets are found outside this evaporation-forbidden region. The escape rates are estimated to be in the range 10^5 g/s to 10^{12} g/s, with few cases above 10^{11} g/s. The estimated escape rate for HD209458b is found to be consistent with the lower limit of 10^{10} g/s obtained from interpretat...

    20. Oak Ridge K-25 Site Technology Logic Diagram

      SciTech Connect (OSTI)

      Fellows, R.L. (ed.)

      1993-02-26

      The Oak Ridge K-25 Technology Logic Diagram (TLD), a decision support tool for the K-25 Site, was developed to provide a planning document that relates environmental restoration and waste management problems at the Oak Ridge K-25 Site to potential technologies that can remediate these problems. The TLD technique identifies the research necessary to develop these technologies to a state that allows for technology transfer and application to waste management, remedial action, and decontamination and decommissioning activities. The TLD consists of four separate volumes-Vol. 1, Vol. 2, Vol. 3A, and Vol. 3B. This Volume, Volume 1 provides introductory and overview information about the TLD. Volume 2 contains logic diagrams. Volume 3 has been divided into two separate volumes to facilitate handling and use. This volume is divided into ten chapters. The first chapter is a brief introduction, and the second chapter details the technical approach of the TLD. These categories are the work activities necessary for successful decontamination and decommissioning, waste management, and remedial action of the K-25 Site. The categories are characterization, decontamination, dismantlement, robotics and automation, remedial action, and waste management. Materials disposition is addressed in Chap. 9. The final chapter contains regulatory compliance information concerning waste management, remedial action, and decontamination and decommissioning.

    1. The fundamental Diagram of Pedestrian Model with Slow Reaction

      E-Print Network [OSTI]

      Fang, Jun; Hu, Hao; Xu, Zhaohui; Li, Huan

      2015-01-01

      The slow-to-start models are a classical cellular automata model in simulating vehicle traffic. However, to our knowledge, the slow-to-start effect has not considered in modeling pedestrian dynamic. We verify the similar behavior between pedestrian and vehicle, and propose an new lattice gas (LG) model called the slow reaction (SR) model to describe the pedestrian's delayed reaction in single-file movement. We simulate and reproduce the Seyfried's field experiments at the research centre Julich, and use its empirical data to validate our SR model. We compare the SR model with the standard LG model. We test different probability of slow reaction ps in SR model and found the simulation data of ps=0.3 fit the empirical data best. The RMS error of mean velocity of SR model is smaller than that of standard LG model. In the range of ps=0.1~0.3, our fundamental diagram between velocity and density by simulation coincides with field experiments. The distribution of individual velocity in fundamental diagram in SR mod...

    2. Flow regimes

      SciTech Connect (OSTI)

      Liles, D.R.

      1982-01-01

      Internal boundaries in multiphase flow greatly complicate fluid-dynamic and heat-transfer descriptions. Different flow regimes or topological configurations can have radically dissimilar interfacial and wall mass, momentum, and energy exchanges. To model the flow dynamics properly requires estimates of these rates. In this paper the common flow regimes for gas-liquid systems are defined and the techniques used to estimate the extent of a particular regime are described. Also, the current computer-code procedures are delineated and introduce a potentially better method is introduced.

    3. Electrohydrodynamic cone-jet bridges: Stability diagram and operating modes

      E-Print Network [OSTI]

      Chen, Chuan-Hua

      a minimum flow rate and at an intermediate range of voltages. In the vicinity of the stability island for an intermediate range of voltages. The upper and lower voltage boundaries merge at the minimum flow rate, giving was drilled at the center of the bottom plate for active liquid drainage. Ethylene glycol (CAS No.107- 21

    4. Microfluidic devices and methods for integrated flow cytometry

      DOE Patents [OSTI]

      Srivastava, Nimisha (Goleta, CA); Singh, Anup K. (Danville, CA)

      2011-08-16

      Microfluidic devices and methods for flow cytometry are described. In described examples, various sample handling and preparation steps may be carried out within a same microfluidic device as flow cytometry steps. A combination of imaging and flow cytometry is described. In some examples, spiral microchannels serve as incubation chambers. Examples of automated sample handling and flow cytometry are described.

    5. ĎThe Importance of the imageí Linking Image geographically: An Edinburgh Case Study†

      E-Print Network [OSTI]

      SKINNER, RHIANAN

      2010-11-24

      Images are important in todayís society. They are a data type that can convey a wealth of information and emotion, in a more informative way than a block of writing. This why we are told as we grow up to use diagrams and ...

    6. Y-12 Plant decontamination and decommissioning technology logic diagram for Building 9201-4. Volume 2: Technology logic diagram

      SciTech Connect (OSTI)

      1994-09-01

      The Y-12 Plant Decontamination and Decommissioning Technology Logic Diagram for Building 9201-4 (TLD) was developed to provide a decision-support tool that relates decontamination and decommissioning (D and D) problems at Bldg. 9201-4 to potential technologies that can remediate these problems. This TLD identifies the research, development, demonstration, testing, and evaluation needed for sufficient development of these technologies to allow for technology transfer and application to D and D and waste management (WM) activities. It is essential that follow-on engineering studies be conducted to build on the output of this project. These studies will begin by selecting the most promising technologies identified in the TLD and by finding an optimum mix of technologies that will provide a socially acceptable balance between cost and risk. The TLD consists of three fundamentally separate volumes: Vol. 1 (Technology Evaluation), Vol. 2 (Technology Logic Diagram), and Vol. 3 (Technology Evaluation Data Sheets). Volume 2 contains the logic linkages among environmental management goals, environmental problems, and the various technologies that have the potential to solve these problems. Volume 2 has been divided into five sections: Characterization, Decontamination, Dismantlement, Robotics/Automation, and Waste Management. Each section contains logical breakdowns of the Y-12 D and D problems by subject area and identifies technologies that can be reasonably applied to each D and D challenge.

    7. This is a diagram of a single nanowire piezoelectricity. (Image courtesy Horacio Espinosa)

      E-Print Network [OSTI]

      Espinosa, Horacio D.

      in accordance with these terms and conditions. Other AZoNetwork Websites AZoM.com AZoNano.com AZoOptics.com AZoCleantech

    8. Poisson equation for the Mercedes diagram in string theory at genus one

      E-Print Network [OSTI]

      Basu, Anirban

      2015-01-01

      The Mercedes diagram has four trivalent vertices which are connected by six links such that they form the edges of a tetrahedron. This three loop Feynman diagram contributes to the D^{12} R^4 amplitude at genus one in type II string theory, where the vertices are the points of insertion of the graviton vertex operators, and the links are the scalar propagators on the toroidal worldsheet. We obtain a modular invariant Poisson equation satisfied by the Mercedes diagram, where the source terms involve one and two loop Feynman diagrams. We calculate its contribution to the D^{12} R^4 amplitude.

    9. The phase diagram and hardness of carbon nitrides

      DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

      Dong, Huafeng; Oganov, Artem R.; Moscow Inst. of Physics and Technology; Northwestern Polytechnical Univ., Xi'an; Zhu, Qiang; Qian, Guang-Rui

      2015-05-06

      Novel superhard materials, especially those with superior thermal and chemical stability, are needed to replace diamond. Carbon nitrides (C-N), which are likely to possess these characteristics and have even been expected to be harder than diamond, are excellent candidates. Here we report three new superhard and thermodynamically stable carbon nitride phases. Based on a systematic evolutionary structure searches, we report a complete phase diagram of the C-N system at 0Ė300 GPa and analyze the hardest metastable structures. Surprisingly, we find that at zero pressure, the earlier proposed graphitic-C3N4 structure (P6-bar m2) is dynamically unstable, and we find the lowest-energy structuremore†Ľbased on s-triazine unit and s-heptazine unit.ę†less

    10. The phase diagram and hardness of carbon nitrides

      DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

      Dong, Huafeng; Oganov, Artem R.; Zhu, Qiang; Qian, Guang-Rui

      2015-05-06

      Novel superhard materials, especially those with superior thermal and chemical stability, are needed to replace diamond. Carbon nitrides (C-N), which are likely to possess these characteristics and have even been expected to be harder than diamond, are excellent candidates. Here we report three new superhard and thermodynamically stable carbon nitride phases. Based on a systematic evolutionary structure searches, we report a complete phase diagram of the C-N system at 0Ė300 GPa and analyze the hardest metastable structures. Surprisingly, we find that at zero pressure, the earlier proposed graphitic-C3N4 structure (P_6m2) is dynamically unstable, and we find the lowest-energy structure based on s-triazine unit and s-heptazine unit.

    11. US energy flow - 1984

      SciTech Connect (OSTI)

      Briggs, C.K.; Borg, I.Y.

      1985-07-01

      The 1984 energy flow diagram for the USA has been constructed using Department of Energy data. It is a convenient graphical device to show supply and demand as well as the size of end-use sectors. A 4% increase in overall energy consumption represented a reversal in a downward trend started in 1979. All indicators pointed to more healthy industrial and farm economies in 1984 than in the previous two years, which accounted for some part of the increase in energy use. While domestic crude oil production remained stable, oil imports rose eight percent also reversing a long-standing trend. Seventy-two million barrels of oil primarily from Mexico and the United Kingdom were added to the Strategic Petroleum Reserve bringing the total oil stored at year end to 451 million barrels. At the same time 49 million barrels of oil were produced from the government-owned Naval Petroleum Reserve No. 1 (Elk Hills, CA). Energy use in all end-use sectors grew in 1984 which is in keeping with increases in use of all types of fossil fuels as well as electricity. Increase in electrical power demand continued to exceed forecasts, and during 1984 contracts for imports to the northeast US were negotiated with Canada. Nuclear power contributed 15% of total power generated in the US. At year end there were 86 licensed reactors and 44 in either start-up or construction stages. Six were canceled or abandoned during construction during the year. 11 refs., 4 figs., 3 tabs.

    12. Notes on Convex Sets, Polytopes, Polyhedra, Combinatorial Topology, Voronoi Diagrams and Delaunay Triangulations

      E-Print Network [OSTI]

      Gallier, Jean

      2008-01-01

      Some basic mathematical tools such as convex sets, polytopes and combinatorial topology, are used quite heavily in applied fields such as geometric modeling, meshing, computer vision, medical imaging and robotics. This report may be viewed as a tutorial and a set of notes on convex sets, polytopes, polyhedra, combinatorial topology, Voronoi Diagrams and Delaunay Triangulations. It is intended for a broad audience of mathematically inclined readers. I have included a rather thorough treatment of the equivalence of V-polytopes and H-polytopes and also of the equivalence of V-polyhedra and H-polyhedra, which is a bit harder. In particular, the Fourier-Motzkin elimination method (a version of Gaussian elimination for inequalities) is discussed in some detail. I also included some material on projective spaces, projective maps and polar duality w.r.t. a nondegenerate quadric in order to define a suitable notion of ``projective polyhedron'' based on cones. To the best of our knowledge, this notion of projective pol...

    13. Jump Flooding in GPU with Applications to Voronoi Diagram and Distance Transform Guodong Rong

      E-Print Network [OSTI]

      Tan, Tiow Seng

      Jump Flooding in GPU with Applications to Voronoi Diagram and Distance Transform Guodong Rong Tiow of the jump flooding algorithm is shown in the other six pictures, with the rightmost being the computed Voronoi diagram. Abstract This paper studies jump flooding as an algorithmic paradigm in the general

    14. 3. Implement Classes and Objects Do: Browse Class/Object Diagrams

      E-Print Network [OSTI]

      Massachusetts at Amherst, University of

      #12;#12;#12;3. Implement Classes and Objects Do: Browse Class/Object Diagrams (Requirements) (The [Candidate Classes/Objects are defined] User initiates the transition (The change list) Changes to candidates (List of candidates) Edit Class Template Edit Timing Diagram Do: Browse Candidate Classes/Objects 2

    15. The Effect of Layout on the Comprehension of UML Class Diagrams: A Controlled Experiment

      E-Print Network [OSTI]

      Maletic, Jonathan I.

      The Effect of Layout on the Comprehension of UML Class Diagrams: A Controlled Experiment Bonita the effects of different layout strategies on the comprehension of UML class diagrams of two software systems in subject accuracy and speed in solving the problems in a majority of tasks. 1. Introduction The UML class

    16. Calculated phase diagrams of pyrochemical systems at the Rocky Flats Plant

      SciTech Connect (OSTI)

      Murray, A.M.

      1988-01-01

      The phase diagrams can help in understanding the process. The approach taken is calculated binary and ternary phase diagrams and optimized thermodynamic parameters. The salt extraction system uses the salts Cs/sub 2/PuCl/sub 6/ and CaCl/sub 2/. Al, Mg, and Ca are used in the salt scrub system. Phase sections are given together with recommendations. (DLC)

    17. A new diagram package (Version 2004-12-08) Michael Barr

      E-Print Network [OSTI]

      Spivak, David

      A new diagram package (Version 2004-12-08) Michael Barr Dept of Math and Stats, McGill University barr@barrs.org Contents 1 Why another diagram package? 1 1.1 The latest version labels . . . . . . . . . . . . . . . . . . 23 4.4 Inline macros

    18. FORMAL SEMANTICS AND VERIFICATION OF DYNAMIC RELIABILITY BLOCK DIAGRAMS FOR SYSTEM RELIABILITY MODELING

      E-Print Network [OSTI]

      Xu, Haiping

      that DRBD provides a powerful tool for system reliability modeling, and our proposed verification approachFORMAL SEMANTICS AND VERIFICATION OF DYNAMIC RELIABILITY BLOCK DIAGRAMS FOR SYSTEM RELIABILITY-scale computer-based systems. KEY WORDS Reliability modeling, dynamic reliability block diagrams (DRBD), Object

    19. Equivalence Checking between Function Block Diagrams and C Programs Using HW-CBMC

      E-Print Network [OSTI]

      ://dslab.konkuk.ac.kr 2 Korea Atomic Energy Research Institute, 150 Deokjin, Yuseong Daejeon, 305-335, Republic of Korea such as nuclear power plants often use Function Block Diagrams (FBDs) to design embedded software. The design in safety critical systems such as nuclear power plants use Func- tion Block Diagrams (FBDs) to design

    20. Minimum Energy Consumption in Multicomponent Distillation. 1. Vmin Diagram for a Two-Product Column

      E-Print Network [OSTI]

      Skogestad, Sigurd

      of Science and Technology, N-7491 Trondheim, Norway The Vmin diagram is introduced to effectively visualize derivation of the Vmin diagram was based on computing pinch zone compositions for columns with an infinite 215 and 316 of this series. The behavior of composition profiles and pinch zones in a column and how

    1. Lyapunov exponents and phase diagrams reveal multi-factorial control over TRAIL-induced apoptosis

      E-Print Network [OSTI]

      Lyapunov exponents and phase diagrams reveal multi-factorial control over TRAIL-induced apoptosis). Here, we investigate factors controlling type I versus II phenotypes by performing Lyapunov exponent-or-none control over activation of effector caspases. Thus, phase diagrams derived from Lyapunov exponent analysis

    2. On Carbon Star Evolution in the IRAS Two-Color-Diagram

      E-Print Network [OSTI]

      On Carbon Star Evolution in the IRAS Two-Color-Diagram Ryszard Szczerba 1;3 , Matthias Steffen 2 the evolution in the IRAS two-color diagram, starting just before the moment of carbon star formation until the end of their evolution on the AGB. We have adopted the widely accepted scenario that carbon stars

    3. A New Color-Magnitude Diagram for Palomar 11

      E-Print Network [OSTI]

      M. S. Lewis; W. M. Liu; N. E. Q. Paust; Brian Chaboyer

      2006-01-13

      We present new photometry for the Galactic thick disk globular cluster Palomar 11 extending well past the main sequence turn-off in the V and I bands. This photometry shows noticeable red giant and subgiant branches. The difference in magnitude between the red horizontal branch (red clump) and the subgiant branch is used to determine that Palomar 11 has an age of 10.4+/-0.5 Gyr. The red clump is used to derive a distance d_\\sun=14.3+/-0.4 kpc, and a mean cluster reddening of E(V-I)=0.40+/-0.03. There is differential reddening across the cluster, of order \\delta E(V-I)~0.07. The colour magnitude diagram of Palomar 11 is virtually identically to that of the thick disk globular cluster NGC 5927, implying that these two clusters have a similar age and metallicity. Palomar 11 has a slightly redder red giant branch than 47 Tuc, implying that Palomar 11 is 0.15 dex more metal-rich, or 1 Gyr older than 47 Tuc. Ca II triplet observations (Rutledge et al. 1997) favour the hypothesis that Palomar 11 is the same age as 47 Tuc, but slightly more metal-rich.

    4. Four-dimensional ultrasound current source density imaging of a dipole field Z. H. Wang,1

      E-Print Network [OSTI]

      Witte, Russell S.

      ) volume images of current flow and biopotentials with as few as one electrode and ground without major

    5. A nonintrusive method of quantifying flow visualization data in vortex flow fields†

      E-Print Network [OSTI]

      Sei, Vincent Joseph

      1994-01-01

      drawbacks to employing video imaging was the introduction of false motion due to camera movement in flight. A relative motion approach using fixed targets along with the flow visualization scheme was utilized to remove unwanted motion. The relative motion...

    6. A scatter diagram approach to the selection of design currents for prediction of marine riser vortex-induced vibration

      E-Print Network [OSTI]

      Donnelly, Jessica Mary

      2004-01-01

      This paper describes a scatter diagram approach for the classification of large numbers of current profiles for use in the prediction of riser fatigue damage due to vortex-induced vibration. Scatter diagrams have long been ...

    7. Flow cytometer

      DOE Patents [OSTI]

      Van den Engh, G.

      1995-11-07

      A Faraday cage is described which encloses the flow chamber of a cytometer. Ground planes associated with each field deflection plate inhibit electric fields from varying the charge on designated events/droplets and further concentrates. They also increase forces applied to a passing charged event for accurate focus while concomitantly inhibiting a potential shock hazard. 4 figs.

    8. Microfluidic Flow-Flash: Method for Investigating Protein Dynamics

      E-Print Network [OSTI]

      Kenis, Paul J. A.

      Microfluidic Flow-Flash: Method for Investigating Protein Dynamics Michael W. Toepke, Scott H Institute, Troy, New York 12180 We report a new method, microfluidic flow-flash, for measuring protein reaction kinetics. The method couples a microscope imaging detection system with a microfluidic flow cell

    9. Practical Conditions for Well-behaved-ness of Anisotropic Voronoi Diagrams

      E-Print Network [OSTI]

      Canas, Guillermo D

      2012-01-01

      Recently, simple conditions for well-behaved-ness of anisotropic Voronoi diagrams have been proposed. While these conditions ensure well-behaved-ness of two types of practical anisotropic Voronoi diagrams, as well as the geodesic-distance one, in any dimension, they are both prohibitively expensive to evaluate, and not well-suited for typical problems in approximation or optimization. We propose simple conditions that can be efficiently evaluated, and are better suited to practical problems of approximation and optimization. The practical utility of this analysis is enhanced by the fact that orphan-free anisotropic Voronoi diagrams have embedded triangulations as duals.

    10. Universal flow-density relation of single-file bicycle, pedestrian and car motion

      E-Print Network [OSTI]

      Zhang, Jun; Holl, Stefan; Boltes, Maik; Andresen, Erik; Schadschneider, Andreas; Seyfried, Armin

      2013-01-01

      The relation between flow and density, also known as the fundamental diagram, is an essential quantitative characteristic to describe the efficiency of traffic systems. We have performed experiments with single-file motion of bicycles and compare the results with previous studies for car and pedestrian motion in similar setups. In the space-time diagrams we observe three different states of motion (free flow state, jammed state and stop-and-go waves) in all these systems. Despite of their obvious differences they are described by a universal fundamental diagram after proper rescaling of space and time which takes into account the size and free velocity of the three kinds of agents. This indicates that the similarities between the systems go deeper than expected.

    11. Test Images

      E-Print Network [OSTI]

      Test Images. I hope to have a set of test images for the course soon. Some images are available now; some will have to wait until I can find another 100-200

    12. DARTPIV : Dynamic Adaptive Real-Time Particle Image Velocimetry

      E-Print Network [OSTI]

      Sharma, Samvaran

      2013-01-01

      Particle Image Velocimetry (PIV) is a technique that allows for the detailed visualization of fluid flow. By performing computational analysis on images taken by a high-sensitivity camera that monitors the movement of ...

    13. Understanding order flow

      E-Print Network [OSTI]

      Evans, MDD; Lyons, Richard K.

      2006-01-01

      Understanding Order Flow October 2005 Martin D. D. Evans 1Rate Fundamentals and Order Flow, typescript, Georgetown2005), Customer Order Flow and Exchange Rate Movements: Is

    14. The use of influence diagrams for evaluating severe accident management strategies

      SciTech Connect (OSTI)

      Jae, M.; Apostolakis, G.E. (California Univ., Los Angeles, CA (United States). Dept. of Mechanical, Aerospace and Nuclear Engineering)

      1992-08-01

      In this paper, the influence diagram, a new analytical tool for developing and evaluating severe accident management strategies, is presented. Influence diagrams are much simpler than decision trees because they do not lead to the large number of branches that are generated when decision trees are used in realistic problems; furthermore, they show explicitly the dependencies between the variables of the problem. One of the accident management strategies proposed for light water reactors, flooding the reactor cavity as a means of preventing vessel breach during a short-term station blackout sequence, is presented. The influence diagram associated with this strategy is constructed. Finally, the advantages of using influence diagrams in accident management are explored.

    15. Evaluating the Effectiveness of Illustrative Visualization of Schematic Diagrams for Maintenance Tasks

      E-Print Network [OSTI]

      Maciejewski, Ross

      Evaluating the Effectiveness of Illustrative Visualization of Schematic Diagrams for Maintenance Thomas Purdue University Rendering and Perceptualization Laboratory Aviation Technology, Purdue University Air Force Research Laboratory Abstract In order to perform daily maintenance and repair tasks

    16. Phase diagram of harmonically confined one-dimensional fermions with attractive and repulsive interactions

      SciTech Connect (OSTI)

      Campo, V. L. Jr.; Capelle, K.

      2005-12-15

      We construct the complete U-{mu} phase diagram for harmonically confined ultracold fermionic atoms with repulsive and attractive interactions({mu} is the chemical potential and U the interaction strength). Our approach is based on density-functional theory, and employs analytical expressions for the kinetic and correlation energy functionals, permitting us to obtain closed expressions for all phase boundaries and characteristic lines of the phase diagram, both for repulsive and attractive interactions.

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

      E-Print Network [OSTI]

      Hess, John Charles

      1993-01-01

      . The friction factors were found to differ significantly from the Moody diagram in that at small clearances, laminar flow appears to not always conform to the [] line predicted by theory. In addition, it is seen that increasing the gap between the plates from...

    18. Neutron tomography of axisymmetric flow fields in porous media A.J. Gilbert, M.R. Deinert

      E-Print Network [OSTI]

      Deinert, Mark

      Neutron tomography of axisymmetric flow fields in porous media A.J. Gilbert, M.R. Deinert February 2013 Keywords: Preferential flow Wetting front Neutron radiography Image analysis Fingered flow axisymmetric preferential flow fields using neutron radiography. Flow fields such as these are surprisingly

    19. DECORRELATION TIMES OF PHOTOSPHERIC FIELDS AND FLOWS

      SciTech Connect (OSTI)

      Welsch, B. T.; Kusano, K.; Yamamoto, T. T.; Muglach, K.

      2012-03-10

      We use autocorrelation to investigate evolution in flow fields inferred by applying Fourier local correlation tracking (FLCT) to a sequence of high-resolution (0.''3), high-cadence ({approx_equal} 2 minute) line-of-sight magnetograms of NOAA active region (AR) 10930 recorded by the narrowband filter imager of the Solar Optical Telescope aboard the Hinode satellite over 2006 December 12 and 13. To baseline the timescales of flow evolution, we also autocorrelated the magnetograms, at several spatial binnings, to characterize the lifetimes of active region magnetic structures versus spatial scale. Autocorrelation of flow maps can be used to optimize tracking parameters, to understand tracking algorithms' susceptibility to noise, and to estimate flow lifetimes. Tracking parameters varied include: time interval {Delta}t between magnetogram pairs tracked, spatial binning applied to the magnetograms, and windowing parameter {sigma} used in FLCT. Flow structures vary over a range of spatial and temporal scales (including unresolved scales), so tracked flows represent a local average of the flow over a particular range of space and time. We define flow lifetime to be the flow decorrelation time, {tau}. For {Delta}t > {tau}, tracking results represent the average velocity over one or more flow lifetimes. We analyze lifetimes of flow components, divergences, and curls as functions of magnetic field strength and spatial scale. We find a significant trend of increasing lifetimes of flow components, divergences, and curls with field strength, consistent with Lorentz forces partially governing flows in the active photosphere, as well as strong trends of increasing flow lifetime and decreasing magnitudes with increases in both spatial scale and {Delta}t.

    20. Use of influence diagrams for evaluation of severe accident management strategies

      SciTech Connect (OSTI)

      Jae, M.; Apostolakis, G.E. (Univ. of California, Los Angeles (United States))

      1991-01-01

      This paper presents a new approach for developing and assessing severe accident management strategies under uncertainty in nuclear power plants. The strategy of flooding the reactor cavity during the TMLB{prime} sequence as a means to prevent vessel breach is used as an example. The modeling of complex decision problems, such as those encountered in severe accident management, involves a large number of random variables. While the state of the art relies on decision trees, influence diagrams have been proposed as an alternative. Large decision trees cannot be displayed except in pieces, but influence diagrams (as suggested in this paper) can depict much larger and more complicated models, such as those required for the development of strategies for managing severe accidents in nuclear power plants. The advantages of influence diagrams include a compact and unambiguous representation of probabilistic dependencies of various events or processes and good communication of the structure of a decision model. Furthermore, influence diagrams allow for the rapid identification of important variables and are easily modified in case the decision maker wants to add or remove some nodes or reverse arcs, making the influence diagrams good tools for developing, as well as evaluating, severe accident management strategies. The superiority of this model is clear in more complicated situations, such as multidecision problems.

    1. Use of Geophysical Techniques to Characterize Fluid Flow in a Geothermal Reservoir

      Broader source: Energy.gov [DOE]

      Project objectives: Joint inversion of geophysical data for ground water flow imaging; Reduced the cost in geothermal exploration and monitoring; & Combined passive and active geophysical methods.

    2. Image alignment

      DOE Patents [OSTI]

      Dowell, Larry Jonathan

      2014-04-22

      Disclosed is a method and device for aligning at least two digital images. An embodiment may use frequency-domain transforms of small tiles created from each image to identify substantially similar, "distinguishing" features within each of the images, and then align the images together based on the location of the distinguishing features. To accomplish this, an embodiment may create equal sized tile sub-images for each image. A "key" for each tile may be created by performing a frequency-domain transform calculation on each tile. A information-distance difference between each possible pair of tiles on each image may be calculated to identify distinguishing features. From analysis of the information-distance differences of the pairs of tiles, a subset of tiles with high discrimination metrics in relation to other tiles may be located for each image. The subset of distinguishing tiles for each image may then be compared to locate tiles with substantially similar keys and/or information-distance metrics to other tiles of other images. Once similar tiles are located for each image, the images may be aligned in relation to the identified similar tiles.

    3. B0-angle effect on zonal and meridional flow determinations from 3 years ring diagram analysis of GONG++ data

      E-Print Network [OSTI]

      Corbard, Thierry

      of GONG++ data A. Zaatri1,2; R. Komm3; I. Gonz√°lez Hern√°ndez3; R. Howe3; T. Corbard2 1.Centre de Recherche Oscillation Network Group (GONG) covering 44 consecutive Carrington rotations from CR 1979 to CR 2022 (July 27 than three years of consecutive GONG data. Introduction We study zonal and meridional components

    4. 5d $E_n$ Seiberg-Witten curve via toric-like diagram

      E-Print Network [OSTI]

      Sung-Soo Kim; Futoshi Yagi

      2015-06-16

      We consider 5d Sp(1) gauge theory with $E_{N_f+1}$ global symmetries based on toric(-like) diagram constructed from (p,q)-web with 7-branes. We propose a systematic procedure to compute the Seiberg-Witten curve for generic toric-like diagram. For $N_f=6,7$ flavors, we explicitly compute the Seiberg-Witten curves for 5d Sp(1) gauge theory, and show that these Seiberg-Witten curves agree with already known $E_{7,8}$ results. We also discuss a generalization of the Seiberg-Witten curve to rank-N cases.

    5. A microfluidic device based on droplet storage for screening solubility diagrams

      E-Print Network [OSTI]

      P. Laval; N. Lisai; J. -B. Salmon; M. Joanicot

      2007-04-04

      This work describes a new microfluidic device developed for rapid screening of solubility diagrams. In several parallel channels, hundreds of nanoliter-volume droplets of a given solution are first stored with a gradual variation in the solute concentration. Then, the application of a temperature gradient along these channels enables us to read directly and quantitatively phase diagrams, concentration vs. temperature. We show, using a solution of adipic acid, that we can measure ten points of the solubility curve in less than 1 hr and with only 250 $\\mu$L of solution.

    6. New Educational Software for Teaching the Sunpath Diagram and Shading Mask Protractor†

      E-Print Network [OSTI]

      Oh, J.; Haberl, J. S.

      1997-01-01

      , Department of Architecture, Texas A&M University, College Station, Texas ABSTRACT The well-known versions of the sunpath diagrams that appear in the AIA's Architectural Graphics Standards are based on the equidistant sky dome projections and use a shading... for the facade in which the window is being analyzed, and placed on top of the sunpath diagram to determine if a point centered at the base of the window is exposed to direct sunlight. Teaching this process to architects and engineers is tedious and error...

    7. Propeller Flow Meter†

      E-Print Network [OSTI]

      Enciso, Juan; Santistevan, Dean; Hla, Aung K.

      2007-10-01

      Propeller flow meters are commonly used to measure water flow rate. They can also be used to estimate irrigation water use. This publication explains how to select, install, read and maintain propeller flow meters....

    8. Bacteria in shear flow

      E-Print Network [OSTI]

      Marcos, Ph.D. Massachusetts Institute of Technology

      2011-01-01

      Bacteria are ubiquitous and play a critical role in many contexts. Their environment is nearly always dynamic due to the prevalence of fluid flow: creeping flow in soil, highly sheared flow in bodily conduits, and turbulent ...

    9. Dispersed flow film boiling

      E-Print Network [OSTI]

      Yoder, Graydon L.

      1980-01-01

      Dispersed flow consists of small liquid droplets entrained in a flowing vapor. This flow regime can occur in cryogenic equipment, in steam generators, and during nuclear reactor loss of coolant accidents. A theoretical ...

    10. On the Flow of Time

      E-Print Network [OSTI]

      George F R Ellis

      2008-12-01

      Current theoretical physics suggests the flow of time is an illusion: the entire universe just is, with no special meaning attached to the present time. This paper points out that this view, in essence represented by usual space-time diagrams, is based on time-reversible microphysical laws, which fail to capture essential features of the time-irreversible nature of decoherence and the quantum measurement process, as well as macro-physical behaviour and the development of emergent complex systems, including life, which exist in the real universe. When these are taken into account, the unchanging block universe view of spacetime is best replaced by an evolving block universe which extends as time evolves, with the potential of the future continually becoming the certainty of the past; spacetime itself evolves, as do the entities within it. However this time evolution is not related to any preferred surfaces in spacetime; rather it is associated with the evolution of proper time along families of world lines. The default state of fundamental physics should not be taken to be a time irreversible evolution of physical states: it is an ongoing irreversible development of time itself.

    11. FLOW-THROUGH POROUS ELECTRODES

      E-Print Network [OSTI]

      Trainham, III, James Arthur

      2011-01-01

      configurations for flow redox battery applications: (i) theporous electrodes A flow-redox battery using flow-by poroustrue in battery applications, Flow..through porous

    12. Multiphase flow calculation software

      DOE Patents [OSTI]

      Fincke, James R. (Idaho Falls, ID)

      2003-04-15

      Multiphase flow calculation software and computer-readable media carrying computer executable instructions for calculating liquid and gas phase mass flow rates of high void fraction multiphase flows. The multiphase flow calculation software employs various given, or experimentally determined, parameters in conjunction with a plurality of pressure differentials of a multiphase flow, preferably supplied by a differential pressure flowmeter or the like, to determine liquid and gas phase mass flow rates of the high void fraction multiphase flows. Embodiments of the multiphase flow calculation software are suitable for use in a variety of applications, including real-time management and control of an object system.

    13. On One Master Integral for Three-loop On-shell HQET Propagator Diagrams with Mass

      SciTech Connect (OSTI)

      Grozin, A.G.; Huber, T.; Maitre, D.; /SLAC

      2007-06-26

      An exact expression for the master integral I{sub 2} [1] arising in three-loop on-shell HQET propagator diagrams with mass is derived and its analytical expansion in the dimensional regularization parameter {var_epsilon} is given.

    14. VISSOFT'07 Submission Kagdi, Maletic Onion Graphs for Focus+Context Views of UML Class Diagrams

      E-Print Network [OSTI]

      Maletic, Jonathan I.

      VISSOFT'07 Submission Kagdi, Maletic Onion Graphs for Focus+Context Views of UML Class Diagrams+context technique for visualizing large UML class models. The focus area, which can be manually or automatically source project. 1. Introduction Developers find UML class models1 useful for designing systems along

    15. A Formal Verification Method of Function Block Diagram Kwang Yong Koh1

      E-Print Network [OSTI]

      Jee, Eunkyoung

      control systems in chemical processing plants, nuclear power plants or traffic control systems [1A Formal Verification Method of Function Block Diagram Kwang Yong Koh1 , Poong Hyun Seong1 , Eun Engineering, KAIST 2 Division of Computer Science, Department of Electrical Engineering and Computer Science

    16. Phase diagram of magnetic domain walls in spin valve nano-stripes N. Rougemaille,1

      E-Print Network [OSTI]

      Boyer, Edmond

      Phase diagram of magnetic domain walls in spin valve nano-stripes N. Rougemaille,1 V. Uhlí,2, 1 O walls in Co/Cu/Py spin valve nano-stripes (Py: Permalloy), in which the Co layer is mostly single domain Magneto- Resistance. These stacking are called spin valve for a metal spacer layer, and pseudo spin valve

    17. Influence Diagrams as Decision-Making Tools for Pesticide Risk Management

      E-Print Network [OSTI]

      Newman, Michael C.

      Influence Diagrams as Decision-Making Tools for Pesticide Risk Management John F Carriger-based decisions about pesticide usage. Aside from technical data, pesticide risk management relies on diverse information on spraying efficacy and valuation of outcomes that would be necessary for making risk management

    18. Guidelines for the Use of Function Block Diagram in Reactor Protection Systems

      E-Print Network [OSTI]

      ) in reactor protection system (RPS) developed in the Korea Nuclear Instrumentation and Control System R-Q Software Engineering Tool (pSET) [2] which is developed by Korea Nuclear Instrumentation and ControlGuidelines for the Use of Function Block Diagram in Reactor Protection Systems Dong-Ah Lee, Junbeom

    19. Numerical evaluation of one-loop diagrams near exceptional momentum configurations

      SciTech Connect (OSTI)

      Walter T Giele; Giulia Zanderighi; E.W.N. Glover

      2004-07-06

      One problem which plagues the numerical evaluation of one-loop Feynman diagrams using recursive integration by part relations is a numerical instability near exceptional momentum configurations. In this contribution we will discuss a generic solution to this problem. As an example we consider the case of forward light-by-light scattering.

    20. Anisotropic magnetic and superconducting phase diagrams of RNi[]B[]C (R = Y, Lu, Ho)†

      E-Print Network [OSTI]

      Dumar, Aaron Christopher

      1999-01-01

      Measurements of the upper critical field, H[]?(T), are reported for YNi?B?C, T[] = 15.6 K, and LuNi?B?C, T[] = 16.1 K as well as a metamagnetic phase diagram for HoNi?B?C, T[] = 8.6 K. Resistance measurements, R(T, H), were taken on single crystal...

    1. Polymers in poor solvents : loop expansion of irreducible diagrams (II) J. des Cloizeaux

      E-Print Network [OSTI]

      Boyer, Edmond

      761 Polymers in poor solvents : loop expansion of irreducible diagrams (II) J. des Cloizeaux polydispersion. Abstract. 2014 Properties of polymers in poor solvent are found by calculating irreducible. Expressions are given for the osmotic pressure, the size of a polymer in a solution and the density

    2. Generating Pedestrian Trajectories Consistent with the Fundamental Diagram based on Physiological and Psychological

      E-Print Network [OSTI]

      North Carolina at Chapel Hill, University of

      1 Generating Pedestrian Trajectories Consistent with the Fundamental Diagram based on Physiological Pedestrian crowds often have been modeled as many-particle system including microscopic multi-agent simulators. One of the key challenges is to unearth governing principles that can model pedestrian movement

    3. Exercise n 1 Draw the Use case and the Sate Diagram and these two systems

      E-Print Network [OSTI]

      Marfisi-Schottman, Iza

      Exercise nį 1 Draw the Use case and the Sate Diagram and these two systems: The Car wash The car of emergency the client can push on an emergency button. If the car is being washed or polished, the user has 2 wash center offers different services: washing, polishing and drying in this order. In case

    4. Allostery Wiring Diagrams in the Transitions that Drive the GroEL Reaction Cycle

      E-Print Network [OSTI]

      Thirumalai, Devarajan

      Allostery Wiring Diagrams in the Transitions that Drive the GroEL Reaction Cycle Riina Tehver1 the course of a reaction cycle, biological machines in general, and Escherichia coli chaperonin Gro cycle and undergo large-scale motions that are anticorrelated with the other apical domain residues

    5. The Bogoliubov free energy functional I. Existence of minimizers and phase diagram

      E-Print Network [OSTI]

      Marcin Napiůrkowski; Robin Reuvers; Jan Philip Solovej

      2015-11-18

      The Bogoliubov free energy functional is analyzed. The functional serves as a model of a translation invariant Bose gas at positive temperature. We prove the existence of minimizers in the case of repulsive interactions given by a sufficiently regular two-body potential. Furthermore, we prove existence of a phase transition in this model and provide its phase diagram.

    6. Eigenmode Identification in Campbell Diagrams Krisztian Buza, Christine Preisach, Andre Busche, Lars Schmidt-Thieme

      E-Print Network [OSTI]

      Schmidt-Thieme, Lars

      .Walters}@rolls-royce.com Abstract Jet engines need to be certified before going into service, i. e., any dangerous vibration has eigenmodes in Campbell diagrams by introducing an extension of Hough trans- form. 1 Introduction Jet engines. Components in jet engines are exposed to vibrations caused by unsteady forces, i. e., relative motions

    7. Exchange-correlation energy and the phase diagram of Si D. Alfe`1,2

      E-Print Network [OSTI]

      AlfŤ, Dario

      exchange-correlation energy, underpredict the melting temperature by 20 %. We present new firstExchange-correlation energy and the phase diagram of Si D. Alfe`1,2 and M. J. Gillan2 1 Earth to the recent de- velopments was the paper of Sugino and Car SC on the melting of Si,5 which showed how

    8. Crystallization Kinetics of Colloidal Spheres under Stationary Shear Flow

      E-Print Network [OSTI]

      P. Holmqvist; M. P. Lettinga; J. Buitenhuis; J. K. G. Dhont

      2005-08-29

      A systematic experimental study of dispersions of charged colloidal spheres is presented on the effect of steady shear flow on nucleation and crystal-growth rates. In addition, the non-equilibrium phase diagram as far as the melting line is concerned is measured. Shear flow is found to strongly affect induction times, crystal growth rates and the location of the melting line. The main findings are that (i) the crystal growth rate for a given concentration exhibits a maximum as a function of the shear rate, (ii) contrary to the monotonous increase of the growth rate with increasing concentration in the absence of flow, a maximum of the crystal growth rate as a function of concentration is observed for sheared systems, and (iii) the induction time for a given concentration exhibits a maximum as a function of the shear rate. These findings will be partly explained on a qualitative level.

    9. Flow Distances on Open Flow Networks

      E-Print Network [OSTI]

      Guo, Liangzhu; Shi, Peiteng; Wang, Jun; Huang, Xiaohan; Zhang, Jiang

      2015-01-01

      Open flow network is a weighted directed graph with a source and a sink, depicting flux distributions on networks in the steady state of an open flow system. Energetic food webs, economic input-output networks, and international trade networks, are open flow network models of energy flows between species, money or value flows between industrial sectors, and goods flows between countries, respectively. Flow distances (first-passage or total) between any given two nodes $i$ and $j$ are defined as the average number of transition steps of a random walker along the network from $i$ to $j$ under some conditions. They apparently deviate from the conventional random walk distance on a closed directed graph because they consider the openness of the flow network. Flow distances are explicitly expressed by underlying Markov matrix of a flow system in this paper. With this novel theoretical conception, we can visualize open flow networks, calculating centrality of each node, and clustering nodes into groups. We apply fl...

    10. Physically-Based Interactive Schlieren Flow Visualization C. Brownlee

      E-Print Network [OSTI]

      Utah, University of

      dynamics (CFD) data. Our method com- putes physically accurate schlieren and shadowgraph images at in INTRODUCTION Recent advances in CFD have produced a wealth of simulated flow data [9]. Understanding these flows is of great importance for ap- plications ranging from aircraft design to combustion analysis [13

    11. Database Schema Evolution using EVER Diagrams Chien-Tsai Liu Shi-Kuo Chang Panos K. Chrysanthid

      E-Print Network [OSTI]

      Madiraju, Praveen

      Database Schema Evolution using EVER Diagrams Chien-Tsai Liu Shi-Kuo Chang Panos K. Chrysanthid to schema evolution through changes to the ER diagram represent- ing the schema of a database. In order. A powerful visual interface is thus provided for database schema evolution. Various approaches to database

    12. 2014 APSECA Safe Programming Guidance of Function Block Diagram for Reactor Protection Systems Dong-Ah Lee*, Junbeom Yoo

      E-Print Network [OSTI]

      in safety critical systems ≠ Nuclear power plant ∑ RPS (Reactor Protection System) ∑ ESF-CCS (Engineering of Function Block Diagram for Reactor Protection Systems Software development in the nuclear power plant Nuclear Instrumentation & Control System R&D Center (KNICS) ∑ FBD and Ladder Diagram (LD) to design

    13. SUPPLEMENT TO METHODS Volumetric imaging of fish locomotion

      E-Print Network [OSTI]

      Flammang, Brooke

      SUPPLEMENT TO METHODS Volumetric imaging of fish locomotion Brooke E. Flammang1* , George V. Lauder developed the volumetric visualization system used to acquire these data. To briefly summarize, fish were placed into a recirculating flow tank and swam within the volume imaged by the volumetric imaging camera

    14. Engine combustion and flow diagnostics

      SciTech Connect (OSTI)

      1995-12-31

      This informative publication discusses the application of diagnostic techniques to internal combustion engines. The papers included fall into three broad categories: flow diagnostics, combustion diagnostics, and fuel spray diagnostics. Contents include: controlling combustion in a spark ignition engine by quantitative fuel distribution; a model for converting SI engine flame arrival signals into flame contours; in-cylinder diesel flame imaging compared with numerical computations; ignition and early soot formation in a DI diesel engine using multiple 2-D imaging diagnostics; investigation of diesel sprays using diffraction-based droplet sizing; fuel distribution effects on the combustion of a direct-injection stratified-charge engine; and 2-D measurements of the liquid phase temperature in fuel sprays.

    15. IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 16, NO. 11, NOVEMBER 2007 2787 Image Segmentation Using Active Contours

      E-Print Network [OSTI]

      IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 16, NO. 11, NOVEMBER 2007 2787 Image Segmentation Using Active Contours Driven by the Bhattacharyya Gradient Flow Oleg Michailovich, Member, IEEE, Yogesh Rathi, and Allen Tannenbaum, Member, IEEE Abstract--This paper addresses the problem of image segmenta- tion

    16. Pore-Level Examination of Gel Destruction During Oil Flow

      E-Print Network [OSTI]

      New York at Stoney Brook, State University of

      Pore-Level Examination of Gel Destruction During Oil Flow R.S. Seright, SPE, New Mexico Petroleum-scale X-ray computed microtomography (XMT) images were obtained at a variety of oil (hexadecane(III)-acetate-hydrolyzed polyacrylamide (HPAM) gel]. For each pore in our image volume, we followed oil and water saturations

    17. Portable wastewater flow meter

      DOE Patents [OSTI]

      Hunter, Robert M. (320 S. Wilson Ave., Bozeman, MT 59715)

      1999-02-02

      A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under fill pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

    18. Portable wastewater flow meter

      DOE Patents [OSTI]

      Hunter, Robert M. (320 S. Wilson Ave., Bozeman, MT 59715)

      1990-01-01

      A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under full pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

    19. An Image Merge For GONG+ C.G. Toner1, D. Haber2, T. Corbard1, R. Bogart3, B. Hindman2

      E-Print Network [OSTI]

      Corbard, Thierry

      An Image Merge For GONG+ C.G. Toner1, D. Haber2, T. Corbard1, R. Bogart3, B. Hindman2 1NSO/GONG Abstract We are developing an algorithm for merging GONG+ velocity images. Here we describe the algorithm-area helioseismology, focusing specifically on ring-diagram analysis. Introduction The GONG Project recently completed

    20. One dimensional electron spin imaging for single spin detection and manipulation using a gradient field†

      E-Print Network [OSTI]

      Shin, Chang-Seok

      2009-05-15

      ...................................................... 23 2.4 Fluorescence images of spin-coated nano-diamond crystal. It was initially focused with the alignment laser (670nm). Scanned area is about 6?m by 6?m... nano-diamond crystal is shown as red dot in the figure .......................................................................................................... 37 2.11 Schematic diagram of the Hanbury-Brwon-Twiss setup with 2 APDs, and time...

    1. Measuring 3D Plant Growth Using Optical Flow J.L. Barron A. Liptay

      E-Print Network [OSTI]

      Barron, John

      1 Measuring 3D Plant Growth Using Optical Flow J.L. Barron A. Liptay Dept. of Computer Science is presented for measuring 3D plant growth using the optical flow computed on an image sequence of a growing made by projecting the plant's orthogonal image onto a mirror oriented at 45 ffi with respect

    2. Two-Phase Flow Patterns in a Four by Four Rod Bundle

      SciTech Connect (OSTI)

      Yoshitaka Mizutani; Shigeo Hosokawa; Akio Tomiyama [Kobe University, Kobe (Japan)

      2006-07-01

      Air-water two-phase flow patterns in a four by four square lattice rod bundle consisting of an acrylic channel box of 68 mm in width and transparent rods of 12 mm in diameter were observed by utilizing a high speed video camera, FEP (fluorinated ethylene propylene) tubes for rods, and a fiber-scope inserted in a rod. The FEP possesses the same refractive index as water, and thereby, whole flow patterns in the bundle and local flow patterns in subchannels were successfully visualized with little optical distortion. The ranges of liquid and gas volume fluxes, and , in the present experiments were 0.1 < < 2.0 m/s and 0.04 < < 8.85 m/s, which covered typical two-phase flow patterns appearing in a fuel bundle of a boiling water nuclear reactor. As a result, the following conclusions were obtained: (1) the region of slug flow in the - flow pattern diagram is so narrow that it can be regarded as a boundary between bubbly and churn flows, (2) the boundary between bubbly and churn flows is close to the boundary between bubbly and slug flows of the Mishima and Ishii's flow pattern transition model, and (3) the boundary between churn and annular flows is well predicted by the Mishima and Ishii's model. (authors)

    3. Phase diagram for a cubic-Q interacting boson model Hamiltonian: Signs of triaxiality

      SciTech Connect (OSTI)

      Fortunato, L. [ECT, European Center for Theoretical Studies in Nuclear Physics and Related Areas, Strada delle Tabarelle 286, I-38050 Villazzano (Italy); Dipartimento di Fisica ''G.Galilei'', via Marzolo 8, I-35131 Padova (Italy); Istituto Nazionale di Fisica Nucleare, (INFN), Sezione di Padova, via Marzolo 8, I-35131 Padova (Italy); Alonso, C. E.; Arias, J. M. [Departamento de Fisica Atomica, Molecular y Nuclear, Facultad de Fisica, Universidad de Sevilla, Apartado 1065, E-41080 Sevilla (Spain); Garcia-Ramos, J. E. [Departamento de Fisica Aplicada, Universidad de Huelva, E-21071 Huelva (Spain); Vitturi, A. [Dipartimento di Fisica ''G.Galilei'', via Marzolo 8, I-35131 Padova (Italy); Istituto Nazionale di Fisica Nucleare, (INFN), Sezione di Padova, via Marzolo 8, I-35131 Padova (Italy)

      2011-07-15

      An extension of the Interacting Boson Model that includes the cubic (QxQxQ){sup (0)} term is proposed. The potential energy surface for the cubic quadrupole interaction is explicitly calculated within the coherent state formalism using the complete ({chi}-dependent) expression for the quadrupole operator. The Q-cubic term is found to depend on the asymmetry deformation parameter {gamma} as a linear combination of cos(3{gamma}) and cos{sup 2}(3{gamma}) terms, thereby allowing for triaxiality. The phase diagram of the model in the large N limit is explored: The orders of the phase transition surfaces that define the phase diagram are described, and the possible nuclear equilibrium shapes are established. It is found that for this particular Hamiltonian, contrary to expectations, there is only a very tiny region of triaxiality, and that the transition from prolate to oblate shapes is so fast that, in most cases, the onset of triaxiality might go unnoticed.

    4. Reentrant phase diagram and pH effects in cross-linked gelatin gels

      E-Print Network [OSTI]

      T. Abete; E. Del Gado; L. de Arcangelis; D. Hellio Serughetti; M. Djabourov

      2008-10-02

      Experimental results have shown that the kinetics of bond formation in chemical crosslinking of gelatin solutions is strongly affected not only by gelatin and reactant concentrations but also by the solution pH. We present an extended numerical investigation of the phase diagram and of the kinetics of bond formation as a function of the pH, via Monte Carlo simulations of a lattice model for gelatin chains and reactant agent in solution. We find a reentrant phase diagram, namely gelation can be hindered either by loop formation, at low reactant concentrations, or by saturation of active sites of the chains via formation of single bonds with crosslinkers, at high reactant concentrations. The ratio of the characteristic times for the formation of the first and of the second bond between the crosslinker and an active site of a chain is found to depend on the reactant reactivity, in good agreement with experimental data.

    5. Phase diagram of mixtures of colloids and polymers in the thermal crossover from good to $?$ solvent

      E-Print Network [OSTI]

      Giuseppe D'Adamo; Andrea Pelissetto; Carlo Pierleoni

      2015-10-08

      We determine the phase diagram of mixtures of spherical colloids and neutral nonadsorbing polymers in the thermal crossover region between the $\\theta$ point and the good-solvent regime. We use the generalized free-volume theory (GFVT), which turns out to be quite accurate as long as $q = R_g/R_c\\lesssim 1$ ($R_g$ is the radius of gyration of the polymer and $R_c$ is the colloid radius). Close to the $\\theta$ point the phase diagram is not very sensitive to solvent quality, while, close to the good-solvent region, changes of the solvent quality modify significantly the position of the critical point and of the binodals. We also analyze the phase behavior of aqueous solutions of charged colloids and polymers, using the extension of GFVT proposed by Fortini et al., J. Chem. Phys. 128, 024904 (2008).

    6. DDMF: An Efficient Decision Diagram Structure for Design Verification of Quantum Circuits under a Practical Restriction

      E-Print Network [OSTI]

      Shigeru Yamashita; Shin-ichi Minato; D. Michael Miller

      2008-09-13

      Recently much attention has been paid to quantum circuit design to prepare for the future "quantum computation era." Like the conventional logic synthesis, it should be important to verify and analyze the functionalities of generated quantum circuits. For that purpose, we propose an efficient verification method for quantum circuits under a practical restriction. Thanks to the restriction, we can introduce an efficient verification scheme based on decision diagrams called Decision Diagrams for Matrix Functions (DDMFs). Then, we show analytically the advantages of our approach based on DDMFs over the previous verification techniques. In order to introduce DDMFs, we also introduce new concepts, quantum functions and matrix functions, which may also be interesting and useful on their own for designing quantum circuits.

    7. Y-12 Plant decontamination and decommissioning Technology Logic Diagram for Building 9201-4: Volume 3, Technology evaluation data sheets: Part B, Decontamination; robotics/automation; waste management

      SciTech Connect (OSTI)

      1994-09-01

      This volume consists of the Technology Logic Diagrams (TLDs) for the decontamination, robotics/automation, and waste management areas.

    8. Microfluidic Exploration of the Phase Diagram of a Surfactant/Water Binary System

      E-Print Network [OSTI]

      Jacques Leng; Mathieu Joanicot; Armand Ajdari

      2006-10-31

      We investigate the behaviour of a binary surfactant solution (AOT/water) as it is progressively concentrated in microfluidic evaporators. We observe in time a succession of phase transitions from a dilute solution up to a dense state, which eventually grows and invades the microchannels. Analyzing these observations, we show that, with a few experiments and a limited amount of material, our microdevices permit a semi-quantitative screening of the equilibrium phase diagram as well as a few kinetic observations.

    9. Actes JFPC 2012 Compilation de CSP en Set-labeled Diagram

      E-Print Network [OSTI]

      Paris-Sud XI, Universitť de

      Actes JFPC 2012 Compilation de CSP en Set-labeled Diagram Alexandre Niveau Hīel`ene Fargier C parfois ^etre exīecutīees en ligne et en temps limitīe. Dans ce cas, la rīesolution du CSP n'est pas assezīe- sente l'assignation d'une variable ; l'ensemble des solu- tions d'un CSP correspond `a l'ensemble des

    10. Interpretation of seismic anisotropy in terms of mantle flow when melt is present

      E-Print Network [OSTI]

      Kaminski, Edouard

      Interpretation of seismic anisotropy in terms of mantle flow when melt is present E. Kaminski scale. Citation: Kaminski, E. (2006), Interpretation of seismic anisotropy in terms of mantle flow when of seismic anisotropy to image upper mantle flow is usually based on the assumption that the direction

    11. System Diagram

      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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired Solar Fuel Production 1:PhysicsSyndicated Content

    12. Low-momentum ring diagrams of neutron matter at and near the unitary limit

      E-Print Network [OSTI]

      L. -W. Siu; T. T. S. Kuo; R. Machleidt

      2007-10-30

      We study neutron matter at and near the unitary limit using a low-momentum ring diagram approach. By slightly tuning the meson-exchange CD-Bonn potential, neutron-neutron potentials with various $^1S_0$ scattering lengths such as $a_s=-12070fm$ and $+21fm$ are constructed. Such potentials are renormalized with rigorous procedures to give the corresponding $a_s$-equivalent low-momentum potentials $V_{low-k}$, with which the low-momentum particle-particle hole-hole ring diagrams are summed up to all orders, giving the ground state energy $E_0$ of neutron matter for various scattering lengths. At the limit of $a_s\\to \\pm \\infty$, our calculated ratio of $E_0$ to that of the non-interacting case is found remarkably close to a constant of 0.44 over a wide range of Fermi-momenta. This result reveals an universality that is well consistent with the recent experimental and Monte-Carlo computational study on low-density cold Fermi gas at the unitary limit. The overall behavior of this ratio obtained with various scattering lengths is presented and discussed. Ring-diagram results obtained with $V_{low-k}$ and those with $G$-matrix interactions are compared.

    13. Phase Diagram of Dynamical Twisted Mass Wilson Fermions at Finite Isospin Chemical Potential

      E-Print Network [OSTI]

      Janssen, Oliver; Splittorff, K; Verbaarschot, Jacobus J M; Zafeiropoulos, Savvas

      2015-01-01

      We consider the phase diagram of twisted mass Wilson fermions of two-flavor QCD in the parameter space of the quark mass, the isospin chemical potential, the twist angle and the lattice spacing. This work extends earlier studies in the continuum and those at zero chemical potential. We evaluate the phase diagram as well as the spectrum of the (pseudo-)Goldstone bosons using the chiral Lagrangian for twisted mass Wilson fermions at non-zero isospin chemical potential. The phases are obtained from a mean field analysis. At zero twist angle we find that already an infinitesimal isospin chemical potential destroys the Aoki phase. The reason is that in this phase we have massless Goldstone bosons with a non-zero isospin charge. At finite twist angle only two different phases are present, one phase which is continuously connected to the Bose condensed phase at non-zero chemical potential and another phase which is continuously connected to the normal phase. For either zero or maximal twist the phase diagram is more...

    14. Global Phase Diagrams of Mixed Surfactant-Polymer Systems at Interfaces

      E-Print Network [OSTI]

      X. Chatellier; D. Andelman

      1998-03-21

      Insoluble surfactant monolayers at the air/water interface undergo a phase transition from a high-temperature homogeneous state to a low-temperature demixed state, where dilute and dense phases coexist. Alternatively, the transition from a dilute phase to a dense one may be induced by compressing the monolayer at constant temperature. We consider the case where the insoluble surfactant monolayer interacts with a semi-dilute polymer solution solubilized in the water subphase. The phase diagrams of the mixed surfactant/polymer system are investigated within the framework of mean field theory. The polymer enhances the fluctuations of the monolayer and induces an upward shift of the critical temperature. The critical concentration is increased if the monomers are more attracted (or at least less repelled) by the surfactant molecules than by the bare water/air interface. In the case where the monomers are repelled by the bare interface but attracted by the surfactant molecules (or vice versa), the phase diagram may have a triple point. The location of the polymer special transition line appears to have a big effect on the phase diagram of the surfactant monolayer.

    15. Flow Field Flow Fractionation Method Development for Applied Bioanalysis

      E-Print Network [OSTI]

      Schachermeyer, Samantha Lynn

      2013-01-01

      E. ; Caldwell, K. , Field-Flow Fractionation Handbook. JohnJ. P. , Sedimentation field-flow-fractionation: emergence ofby sedimentation field-flow fractionation. Am. Lab. (

    16. Ultrasonic flow metering system

      DOE Patents [OSTI]

      Gomm, Tyler J. (Meridian, ID); Kraft, Nancy C. (Idaho Falls, ID); Mauseth, Jason A. (Pocatello, ID); Phelps, Larry D. (Pocatello, ID); Taylor, Steven C. (Idaho Falls, ID)

      2002-01-01

      A system for determining the density, flow velocity, and mass flow of a fluid comprising at least one sing-around circuit that determines the velocity of a signal in the fluid and that is correlatable to a database for the fluid. A system for determining flow velocity uses two of the inventive circuits with directional transmitters and receivers, one of which is set at an angle to the direction of flow that is different from the others.

    17. Elbow mass flow meter

      DOE Patents [OSTI]

      McFarland, Andrew R. (College Station, TX); Rodgers, John C. (Santa Fe, NM); Ortiz, Carlos A. (Bryan, TX); Nelson, David C. (Santa Fe, NM)

      1994-01-01

      Elbow mass flow meter. The present invention includes a combination of an elbow pressure drop generator and a shunt-type mass flow sensor for providing an output which gives the mass flow rate of a gas that is nearly independent of the density of the gas. For air, the output is also approximately independent of humidity.

    18. FLOW-THROUGH POROUS ELECTRODES

      E-Print Network [OSTI]

      Trainham, III, James Arthur

      2011-01-01

      Wilhelm. HBoundary conditions of a flow reactor. 1i Chemicala Packed-Bed Electrochemical Flow Reactor." Journal ofRichard, and Brian Gracon. "Flow-Through Porous Electrodes."

    19. Redox Flow Batteries, a Review

      E-Print Network [OSTI]

      Weber, Adam Z.

      2013-01-01

      Ltd." . Http://Plurionsystems.Com/Tech_Flow_Advantages.Html.plurionsystems.com/tech_flow_advantages.html [71] P. Leung,High Energy Density Redox Flow Device," ed: WO Patent

    20. Restframe I-band Hubble diagram for type Ia supernovae up to redshift z ~; 0.5

      E-Print Network [OSTI]

      2005-01-01

      in STScI Symposium Ser. 13, Supernovae and gamma-ray bursts:Highlight: The Physics of Supernovae, ed. W. Hillebrandt &diagram for type Ia supernovae up to redshift z ? 0.5 ? S.

    1. Lateral flow strip assay

      DOE Patents [OSTI]

      Miles, Robin R. (Danville, CA); Benett, William J. (Livermore, CA); Coleman, Matthew A. (Oakland, CA); Pearson, Francesca S. (Livermore, CA); Nasarabadi, Shanavaz L. (Livermore, CA)

      2011-03-08

      A lateral flow strip assay apparatus comprising a housing; a lateral flow strip in the housing, the lateral flow strip having a receiving portion; a sample collection unit; and a reagent reservoir. Saliva and/or buccal cells are collected from an individual using the sample collection unit. The sample collection unit is immersed in the reagent reservoir. The tip of the lateral flow strip is immersed in the reservoir and the reagent/sample mixture wicks up into the lateral flow strip to perform the assay.

    2. Low flow fume hood

      DOE Patents [OSTI]

      Bell, Geoffrey C. (Pleasant Hill, CA); Feustel, Helmut E. (Albany, CA); Dickerhoff, Darryl J. (Berkeley, CA)

      2002-01-01

      A fume hood is provided having an adequate level of safety while reducing the amount of air exhausted from the hood. A displacement flow fume hood works on the principal of a displacement flow which displaces the volume currently present in the hood using a push-pull system. The displacement flow includes a plurality of air supplies which provide fresh air, preferably having laminar flow, to the fume hood. The displacement flow fume hood also includes an air exhaust which pulls air from the work chamber in a minimally turbulent manner. As the displacement flow produces a substantially consistent and minimally turbulent flow in the hood, inconsistent flow patterns associated with contaminant escape from the hood are minimized. The displacement flow fume hood largely reduces the need to exhaust large amounts of air from the hood. It has been shown that exhaust air flow reductions of up to 70% are possible without a decrease in the hood's containment performance. The fume hood also includes a number of structural adaptations which facilitate consistent and minimally turbulent flow within a fume hood.

    3. Electro-osmotic flow in coated nanocapillaries: a theoretical investigation

      E-Print Network [OSTI]

      Umberto Marini Bettolo Marconi; Michele Monteferrante; Simone Melchionna

      2015-07-16

      Motivated by recent experiments, we present a theoretical investigation of how the electro-osmotic flow occurring in a capillary is modified when its charged surfaces are coated by charged polymers. The theoretical treatment is based on a three dimensional model consisting of a ternary fluid-mixture, representing the solvent and two species for the ions, confined between two parallel charged plates decorated by a fixed array of scatterers representing the polymer coating. The electro-osmotic flow, generated by a constant electric field applied in a direction parallel to the plates, is studied numerically by means of Lattice Boltzmann simulations. In order to gain further understanding we performed a simple theoretical analysis by extending the Stokes-Smoluchowski equation to take into account the porosity induced by the polymers in the region adjacent the walls. We discuss the nature of the velocity profiles by focusing on the competing effects of the polymer charges and the frictional forces they exert. We show evidence of the flow reduction and of the flow inversion phenomenon when the polymer charge is opposite to the surface charge. By using the density of polymers and the surface charge as control variables, we propose a phase diagram that discriminates the direct and the reversed flow regimes and determine its dependence on the ionic concentration.

    4. Kolmogorov flow in two dimensional strongly coupled dusty plasma

      SciTech Connect (OSTI)

      Gupta, Akanksha; Ganesh, R., E-mail: ganesh@ipr.res.in; Joy, Ashwin [Institute for Plasma Research, Bhat Gandhinagar, Gujarat 382 428 (India)

      2014-07-15

      Undriven, incompressible Kolmogorov flow in two dimensional doubly periodic strongly coupled dusty plasma is modelled using generalised hydrodynamics, both in linear and nonlinear regime. A complete stability diagram is obtained for low Reynolds numbers R and for a range of viscoelastic relaxation time ?{sub m} [0?flow becomes unstable. Importantly, it is found that R{sub c} is strongly reduced for increasing values of ?{sub m}. A critical ?{sub m}{sup c} is found above which Kolmogorov flow is unconditionally unstable and becomes independent of Reynolds number. For R?flow as function of Reynolds number R. A new parallelized nonlinear pseudo spectral code has been developed and is benchmarked against eigen values for Kolmogorov flow obtained from linear analysis. Nonlinear states obtained from the pseudo spectral code exhibit cyclicity and pattern formation in vorticity and viscoelastic oscillations in energy.

    5. Imaging, Characterizing, and Modeling of Fracture Networks and...

      Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

      Scale Model Imaging, Characterizing, and Modeling of Fracture Networks and Fluid Flow in EGS Reservoirs; II: Full-Waveform Inversion of 3D-9C VSP data from Bradys EGS Site...

    6. Imaging Scatterometry

      E-Print Network [OSTI]

      Madsen, Morten Hannibal

      2015-01-01

      We present an optical metrology system for characterization of topography of micro/nano-structures on a surface or embedded in a semi-transparent material. Based on the principles of scatterometry, where the intensity of scattered light is used as a 'fingerprint' to reconstruct a surface, this new imaging scatterometer can easily find areas of interest on the cm scale and measure multiple segments simultaneously. The imaging scatterometer measures structural features, such as height, width, and sidewall angle of a grating locally on few um2 areas with nm resolution. We demonstrate two imaging scatterometers, one built into an optical microscope and one in a split configuration. The two scatterometers are targeted characterization of mm2 and cm2 areas, respectively, and both setups are validated using nano-textured samples.

    7. Mechanical annealing in the flow of supercooled metallic liquid

      SciTech Connect (OSTI)

      Zhang, Meng [State Key Lab of Materials Processing and Die and Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074 (China); State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190 (China); Dai, Lan Hong [State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190 (China); Liu, Lin, E-mail: lliu2000@mail.hust.edu.cn [State Key Lab of Materials Processing and Die and Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074 (China)

      2014-08-07

      Flow induced structural evolution in a supercooled metallic liquid Vit106a (Zr{sub 58.5}Cu{sub 15.6}Al{sub 10.3}Ni{sub 12.8}Nb{sub 2.8}, at.?%) was investigated via uni-axial compression combined with differential scanning calorimeter (DSC). Compression tests at strain rates covering the transition from Newtonian flow to non-Newtonian flow and at the same strain rate 2?◊?10{sup ?1} s{sup ?1} to different strains were performed at the end of glass transition (T{sub g-end}?=?703?K). The relaxation enthalpies measured by DSC indicate that the samples underwent non-Newtonian flow contain more free volume than the thermally annealed sample (703?K, 4?min), while the samples underwent Newtonian flow contain less, namely, the free volume of supercooled metallic liquids increases in non-Newtonian flow, while decreases in Newtonian flow. The oscillated variation of the relaxation enthalpies of the samples deformed at the same strain rate 2?◊?10{sup ?1} s{sup ?1} to different strains confirms that the decrease of free volume was caused by flow stress, i.e., ďmechanical annealing.Ē Micro-hardness tests were also performed to show a similar structural evolution tendency. Based on the obtained results, the stress-temperature scaling in the glass transition of metallic glasses are supported experimentally, as stress plays a role similar to temperature in the creation and annihilation of free volume. In addition, a widening perspective angle on the glass transition of metallic glasses by exploring the 3-dimensional stress-temperature-enthalpy phase diagram is presented. The implications of the observed mechanical annealing effect on the amorphous structure and the work-hardening mechanism of metallic glasses are elucidated based on atomic level stress model.

    8. THE GAMMA-RAY BURST HUBBLE DIAGRAM AND ITS IMPLICATIONS FOR COSMOLOGY

      SciTech Connect (OSTI)

      Wei Junjie; Wu Xuefeng [Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China); Melia, Fulvio, E-mail: jjwei@pmo.ac.cn, E-mail: xfwu@pmo.ac.cn, E-mail: fmelia@email.arizona.edu [Department of Physics, Applied Math Program, and Department of Astronomy, University of Arizona, AZ 85721 (United States)

      2013-07-20

      In this paper, we continue to build support for the proposal to use gamma-ray bursts (GRBs) as standard candles in constructing the Hubble diagram at redshifts beyond the current reach of Type Ia supernova observations. We confirm that correlations among certain spectral and light-curve features can indeed be used as luminosity indicators, and demonstrate from the most up-to-date GRB sample appropriate for this work that the {Lambda}CDM model optimized with these data is characterized by parameter values consistent with those in the concordance model. Specifically, we find that ({Omega}{sub m},{Omega}{sub {Lambda}}){approx}(0.25{sub -0.06}{sup +0.05}, 0.75{sub -0.05}{sup +0.06}), which are consistent, to within 1{sigma}, with (0.29, 0.71) obtained from the 9 yr Wilkinson Microwave Anisotropy Probe data. We also carry out a comparative analysis between {Lambda}CDM and the R{sub h} = ct universe and find that the optimal {Lambda}CDM model fits the GRB Hubble diagram with a reduced {chi}{sup 2}{sub dof}{approx}2.26, whereas the fit using R{sub h} = ct results in a {chi}{sup 2}{sub dof}{approx}2.14. In both cases, about 20% of the events lie at least 2{sigma} away from the best-fit curves, suggesting that either some contamination by non-standard GRB luminosities is unavoidable or that the errors and intrinsic scatter associated with the data are being underestimated. With these optimized fits, we use three statistical tools-the Akaike information criterion, the Kullback information criterion, and the Bayes information criterion-to show that, based on the GRB Hubble diagram, the likelihood of R{sub h} = ct being closer to the correct model is {approx}85%-96%, compared to {approx}4%-15% for {Lambda}CDM.

    9. Decision Making with Hybrid Influence Diagrams Using Mixtures of Truncated Exponentials

      E-Print Network [OSTI]

      Cobb, Barry R.; Shenoy, Prakash P.

      2008-04-01

      is an adaptation of the Oil Wildcatter problem from Rai?a (1968). We model some variables as continuous uncertainties. 12 Test (T) u 0 Drill (D) Results (R) Oil (O) Cost (C) Volume (V) Price (P) Fig. 4. A hybrid influence diagram representation of the Oil..., the amount of oil extracted follows a normal distribution with a mean of 13.5 thousand barrels and a standard deviation of 2 thousand barrels, i.e. £(V | O =2)? N(13.5, 2 2 ). The cost of drilling (C) is normally distributed with a mean of 70 thousand dollars...

    10. The Problem of Two Fixed Centers: Bifurcation Diagram for Positive Energies

      E-Print Network [OSTI]

      Marcello Seri

      2014-09-19

      We give a comprehensive analysis of the Euler-Jacobi problem of motion in the field of two fixed centers with arbitrary relative strength and for positive values of the energy. These systems represent nontrivial examples of integrable dynamics and are analysed from the point of view of the energy-momentum mapping from the phase space to the space of the integration constants. In this setting we describe the structure of the scattering trajectories in phase space and derive an explicit description of the bifurcation diagram, i.e. the set of critical value of the energy-momentum map.

    11. The Phase Diagram GdF3-LuF3

      E-Print Network [OSTI]

      Ranieri, I M; Klimm, D

      2008-01-01

      The phase diagram gadolinium fluoride - lutetium fluoride was determined by differential scanning calorimetry (DSC) and X-ray powder diffraction analysis. Both pure components undergo a reversible first order transformation to a high temperature phase. The mutual solubility of both components is unlimited in the orthorhombic room temperature phase. The maximum solubility of Lu in the high temperature phase of GdF3 (tysonite type) is about 20% and the maximum solubility of Gd in LuF3 ($\\alpha$-YF3 type) is about 40%. Intermediate compositions of the low temperature phase decompose upon heating in a peritectoid reaction to a mixture of both high temperature phases.

    12. Quantum Phase Diagram of the t-J{sub z} Chain Model

      SciTech Connect (OSTI)

      Batista, C. D.; Ortiz, G.

      2000-11-27

      We present the quantum phase diagram of the one-dimensional t -J{sub z} model for arbitrary spin (integer or half-integer) and sign of the spin-spin interaction J{sub z} , using an exact mapping to a spinless fermion model that can be solved exactly using the Bethe ansatz. We discuss its superconducting phase as a function of hole doping {nu} . Motivated by the new paradigm of high temperature superconductivity, the stripe phase, we also consider the effect the antiferromagnetic background has on the t -J{sub z} chain intended to mimic the stripe segments.

    13. THE FUELING DIAGRAM: LINKING GALAXY MOLECULAR-TO-ATOMIC GAS RATIOS TO INTERACTIONS AND ACCRETION

      SciTech Connect (OSTI)

      Stark, David V.; Kannappan, Sheila J.; Eckert, Kathleen D.; Wei, Lisa H.; Baker, Andrew J.; Leroy, Adam K.; Vogel, Stuart N.

      2013-05-20

      To assess how external factors such as local interactions and fresh gas accretion influence the global interstellar medium of galaxies, we analyze the relationship between recent enhancements of central star formation and total molecular-to-atomic (H{sub 2}/H I) gas ratios, using a broad sample of field galaxies spanning early-to-late type morphologies, stellar masses of 10{sup 7.2}-10{sup 11.2} M{sub Sun }, and diverse stages of evolution. We find that galaxies occupy several loci in a ''fueling diagram'' that plots H{sub 2}/H I ratio versus mass-corrected blue-centeredness, a metric tracing the degree to which galaxies have bluer centers than the average galaxy at their stellar mass. Spiral galaxies of all stellar masses show a positive correlation between H{sub 2}/H I ratio and mass-corrected blue-centeredness. When combined with previous results linking mass-corrected blue-centeredness to external perturbations, this correlation suggests a systematic link between local galaxy interactions and molecular gas inflow/replenishment. Intriguingly, E/S0 galaxies show a more complex picture: some follow the same correlation, some are quenched, and a distinct population of blue-sequence E/S0 galaxies (with masses below key scales associated with transitions in gas richness) defines a separate loop in the fueling diagram. This population appears to be composed of low-mass merger remnants currently in late- or post-starburst states, in which the burst first consumes the H{sub 2} while the galaxy center keeps getting bluer, then exhausts the H{sub 2}, at which point the burst population reddens as it ages. Multiple lines of evidence suggest connected evolutionary sequences in the fueling diagram. In particular, tracking total gas-to-stellar mass ratios within the fueling diagram provides evidence of fresh gas accretion onto low-mass E/S0s emerging from their central starburst episodes. Drawing on a comprehensive literature search, we suggest that virtually all galaxies follow the same evolutionary patterns found in our broad sample.

    14. Pipe Flow System Holly Guest

      E-Print Network [OSTI]

      Clement, Prabhakar

      Pipe Flow System Design Holly Guest #12;Problem ∑ An engineer is asked to compute the flow rate ∑ Flow type: Turbulent or Laminar flowFlow rate ∑ Frictional head loss ∑ Optimal diameters if a pump ∑ = - ( . + . ) ∑ f = friction factor ∑ = relative roughness = ∑ = Reynolds Number = ∑ Laminar flow: 2000

    15. Sankey Diagram of Onsite Generation in U.S. Manufacturing Sector...

      Energy Savers [EERE]

      below shows offsite inputs of fuel and electricity that flow to conventional boilers, CHP, and other steam- andor electricity-generating systems. Generating steam and...

    16. Flow patterns in vertical two-phase flow

      SciTech Connect (OSTI)

      McQuillan, K.W.; Whalley, P.B.

      1985-03-01

      This paper is concerned with the flow patterns which occur in upwards gas-liquid two-phase flow in vertical tubes. The basic flow patterns are described and the use of flow patter maps is discussed. The transition between plug flow and churn flow is modelled under the assumption that flooding of the falling liquid film limits the stability of plug flow. The resulting equation is combined with other flow pattern transition equations to produce theoretical flow pattern maps, which are then tested against experimental flow pattern data. Encouraging agreement is obtained.

    17. Imaging system for cardiac planar imaging using a dedicated dual-head gamma camera

      DOE Patents [OSTI]

      Majewski, Stanislaw (Morgantown, VA); Umeno, Marc M. (Woodinville, WA)

      2011-09-13

      A cardiac imaging system employing dual gamma imaging heads co-registered with one another to provide two dynamic simultaneous views of the heart sector of a patient torso. A first gamma imaging head is positioned in a first orientation with respect to the heart sector and a second gamma imaging head is positioned in a second orientation with respect to the heart sector. An adjustment arrangement is capable of adjusting the distance between the separate imaging heads and the angle between the heads. With the angle between the imaging heads set to 180 degrees and operating in a range of 140-159 keV and at a rate of up to 500kHz, the imaging heads are co-registered to produce simultaneous dynamic recording of two stereotactic views of the heart. The use of co-registered imaging heads maximizes the uniformity of detection sensitivity of blood flow in and around the heart over the whole heart volume and minimizes radiation absorption effects. A normalization/image fusion technique is implemented pixel-by-corresponding pixel to increase signal for any cardiac region viewed in two images obtained from the two opposed detector heads for the same time bin. The imaging system is capable of producing enhanced first pass studies, bloodpool studies including planar, gated and non-gated EKG studies, planar EKG perfusion studies, and planar hot spot imaging.

    18. Nuclear Imaging | Jefferson Lab

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

      Research Jefferson Lab's Radiation Detector and Imaging Group Members of Jefferson Lab's Radiation Detector & Medical Imaging Group design and build unique imaging devices based on...

    19. Forced Granular Orifice Flow

      E-Print Network [OSTI]

      Zheng Peng; Hepeng Zheng; Yimin Jiang

      2009-09-06

      The flow of granular material through an orifice is studied experimentally as a function of force $F$ pushing the flow. It is found that the flow rate increases linearly with $F$ -- a new, unexpected result that is in contrast to the usual view that $F$, completely screened by an arch formed around the orifice, has no way of altering the rate. Employing energy balance, we show that this behavior results mainly from dissipation in the granular material.

    20. Turbulent flow in graphene

      E-Print Network [OSTI]

      Kumar S. Gupta; Siddhartha Sen

      2010-06-05

      We demonstrate the possibility of a turbulent flow of electrons in graphene in the hydrodynamic region, by calculating the corresponding turbulent probability density function. This is used to calculate the contribution of the turbulent flow to the conductivity within a quantum Boltzmann approach. The dependence of the conductivity on the system parameters arising from the turbulent flow is very different from that due to scattering.

    1. Solids mass flow determination

      DOE Patents [OSTI]

      Macko, Joseph E. (Hempfield Township, Westmoreland County, PA)

      1981-01-01

      Method and apparatus for determining the mass flow rate of solids mixed with a transport fluid to form a flowing mixture. A temperature differential is established between the solids and fluid. The temperature of the transport fluid prior to mixing, the temperature of the solids prior to mixing, and the equilibrium temperature of the mixture are monitored and correlated in a heat balance with the heat capacities of the solids and fluid to determine the solids mass flow rate.

    2. Quantum path-integral study of the phase diagram and isotope effects of neon

      E-Print Network [OSTI]

      Ramirez, R; 10.1063/1.3023036

      2011-01-01

      The phase diagram of natural neon has been calculated for temperatures in the range 17-50 K and pressures between 0.01 and 2000 bar. The phase coexistence between solid, liquid, and gas phases has been determined by the calculation of the separate free energy of each phase as a function of temperature. Thus, for a given pressure, the coexistence temperature was obtained by the condition of equal free energy of coexisting phases. The free energy was calculated by using non-equilibrium techniques such as adiabatic switching and reversible scaling. The phase diagram obtained by classical Monte Carlo simulations has been compared to that obtained by quantum path-integral simulations. Quantum effects related to the finite mass of neon cause that coexistence lines are shifted towards lower temperatures when compared to the classical limit. The shift found in the triple point amounts to 1.5 K, i.e., about 6 % of the triple-point temperature. The triple-point isotope effect has been determined for 20Ne, 21Ne, 22Ne, a...

    3. Bounds and phase diagram of efficiency at maximum power for tight-coupling molecular motors

      E-Print Network [OSTI]

      Z. C. Tu

      2013-02-08

      The efficiency at maximum power (EMP) for tight-coupling molecular motors is investigated within the framework of irreversible thermodynamics. It is found that the EMP depends merely on the constitutive relation between the thermodynamic current and force. The motors are classified into four generic types (linear, superlinear, sublinear, and mixed types) according to the characteristics of the constitutive relation, and then the corresponding ranges of the EMP for these four types of molecular motors are obtained. The exact bounds of the EMP are derived and expressed as the explicit functions of the free energy released by the fuel in each motor step. A phase diagram is constructed which clearly shows how the region where the parameters (the load distribution factor and the free energy released by the fuel in each motor step) are located can determine whether the value of the EMP is larger or smaller than 1/2. This phase diagram reveals that motors using ATP as fuel under physiological conditions can work at maximum power with higher efficiency ($>1/2$) for a small load distribution factor ($<0.1$).

    4. Oak Ridge K-25 Site Technology Logic Diagram. Volume 1, Technology evaluation

      SciTech Connect (OSTI)

      Fellows, R.L. [ed.

      1993-02-26

      The Oak Ridge K-25 Technology Logic Diagram (TLD), a decision support tool for the K-25 Site, was developed to provide a planning document that relates environmental restoration and waste management problems at the Oak Ridge K-25 Site to potential technologies that can remediate these problems. The TLD technique identifies the research necessary to develop these technologies to a state that allows for technology transfer and application to waste management, remedial action, and decontamination and decommissioning activities. The TLD consists of four separate volumes-Vol. 1, Vol. 2, Vol. 3A, and Vol. 3B. This Volume, Volume 1 provides introductory and overview information about the TLD. Volume 2 contains logic diagrams. Volume 3 has been divided into two separate volumes to facilitate handling and use. This volume is divided into ten chapters. The first chapter is a brief introduction, and the second chapter details the technical approach of the TLD. These categories are the work activities necessary for successful decontamination and decommissioning, waste management, and remedial action of the K-25 Site. The categories are characterization, decontamination, dismantlement, robotics and automation, remedial action, and waste management. Materials disposition is addressed in Chap. 9. The final chapter contains regulatory compliance information concerning waste management, remedial action, and decontamination and decommissioning.

    5. Phase diagram of the CF{sub 4} monolayer and bilayer on graphite

      SciTech Connect (OSTI)

      Thomas, Petros; Hess, George B.

      2014-05-21

      We report an experimental study of physisorbed monolayers and bilayers of CF{sub 4} on graphite using infrared reflection absorption spectroscopy supplemented by ellipsometry. The symmetric CĖF stretch mode ?{sub 3} near 1283 cm{sup ?1} in the gas is strongly blue shifted in the film by dynamic dipole coupling. This blue shift provides a very sensitive measure of the inter-molecular spacing in the monolayer and, less directly, in the bilayer. We find that important corrections are necessary to the volumetric coverage scales used in previous heat capacity and x-ray diffraction studies of this system. This requires quantitative and some qualitative changes to the previously proposed phase diagram. We find evidence for a new phase transition in the middle of the hexagonal incommensurate region and construct new phase diagrams in both the variables coverage-temperature and chemical potential-temperature. We determine the compressibility and thermal expansion in the low-pressure hexagonal incommensurate phase and values for the entropy change in several phase transitions. Below about 55 K there is evidence of solution of up to 7% of an impurity, most likely CO, in our monolayer but not the bilayer film.

    6. Effects of fermions on the superfluid-insulator phase diagram of the Bose-Hubbard model

      SciTech Connect (OSTI)

      Tewari, Sumanta; Lutchyn, Roman M.; Das Sarma, S.

      2009-08-01

      Building on the work of Fisher et al. [Phys. Rev. B 40, 546 (1989)], we develop the perturbation theory for the Bose-Hubbard model and apply it to calculate the effects of a degenerate gas of spin-polarized fermions interacting by contact interactions with the constituent bosons. For the single-band Bose-Hubbard model, we find that the net effect of the screening of the boson on-site interaction by the fermions is to suppress the Mott-insulating lobes in the Bose-Hubbard phase diagram. For the more general multiband model, we find that, in addition to the fermion screening effects, the virtual excitations of the bosons to the higher Bloch bands, coupled with the contact interactions with the fermions, result in an effective increase (decrease) of the boson on-site repulsion (hopping parameter). If the higher-band renormalization of the boson parameters is dominant over the fermion screening of the interaction, the Mott-insulating lobes in the Bose-Hubbard phase diagram are enhanced for either sign of the Bose-Fermi interactions, consistent with the recent experiments.

    7. Energy Saving Melting and Revert Reduction Technology (Energy SMARRT): Development of CCT Diagrams

      SciTech Connect (OSTI)

      L. Scott Chumbley

      2011-08-20

      One of the most energy intensive industries in the U.S. today is in the melting and casting of steel alloys for use in our advanced technological society. While the majority of steel castings involve low or mild carbon steel for common construction materials, highly-alloyed steels constitute a critical component of many industries due to their excellent properties. However, as the amount of alloying additions increases, the problems associated with casting these materials also increases, resulting in a large waste of energy due to inefficiency and a lack of basic information concerning these often complicated alloy systems. Superaustenitic stainless steels constitute a group of Fe-based alloys that are compositionally balanced to have a purely austenitic matrix and exhibit favorable pitting and crevice corrosion resistant properties and mechanical strength. However, intermetallic precipitates such as sigma (√?¬?√?¬Į√?¬?√?¬Ā√?¬?√?¬≥) and Laves can form during casting or exposure to high-temperature processing, which degrade the corrosion and mechanical properties of the material. Knowledge of the times and temperatures at which these detrimental phases form is imperative if a company is to efficiently produce castings of high quality in the minimum amount of time, using the lowest amount of energy possible, while producing the least amount of material waste. Anecdotal evidence from company representatives revealed that large castings frequently had to be scrapped due to either lower than expected corrosion resistance or extremely low fracture toughness. It was suspected that these poor corrosion and / or mechanical properties were directly related to the type, amount, and location of various intermetallic phases that formed during either the cooling cycle of the castings or subsequent heat treatments. However, no reliable data existed concerning either the time-temperature-transformation (TTT) diagrams or the continuous-cooling-transformation (CCT) diagrams of the super-austenitics. The goal of this study was to accurately characterize the solid-solid phase transformations seen in cast superaustenitic stainless steels. Heat treatments were performed to understand the time and temperature ranges for intermetallic phase formations in alloys CN3MN and CK3McuN. Microstructures were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy and wavelength dispersive spectroscopy (EDS, WDS). In this way TTT and CCT diagrams could be developed for the matrix of samples chosen. As this study consisted of basic research into the development of TTT and CCT diagrams as an aid to the US steel casting industry, there is no formal commercialization plan associated with this task other than presentations and publications via the Steel Founders Society of America to their members. The author is confident that the data contained in this report can be used by steel foundries to refine their casting procedures in such a way as to reduce the amount of waste produced and energy wasted by significantly reducing or eliminating the need for remelting or recasting of material due to unwanted, premature intermetallic formation. This development of high alloy steel CCT diagrams was predicted to result in an average energy savings of 0.05 trillion BTU√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?s/year over a 10 year period (with full funding). With 65% of the proposed funding, current (2011) annual energy saving estimates, based on initial dissemination to the casting industry in 2011and market penetration of 97% by 2020, is 0.14 trillion BTU√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?s/year. The reduction of scrap and improvement in casting yield will also result in a reduction of environmental emissions associated with the melting and pouring of the steel. The average annual estimate of CO2 reduction per year through 2020 is 0.003 Million Metri

    8. Imaging bolometer

      DOE Patents [OSTI]

      Wurden, Glen A. (Los Alamos, NM)

      1999-01-01

      Radiation-hard, steady-state imaging bolometer. A bolometer employing infrared (IR) imaging of a segmented-matrix absorber of plasma radiation in a cooled-pinhole camera geometry is described. The bolometer design parameters are determined by modeling the temperature of the foils from which the absorbing matrix is fabricated by using a two-dimensional time-dependent solution of the heat conduction equation. The resulting design will give a steady-state bolometry capability, with approximately 100 Hz time resolution, while simultaneously providing hundreds of channels of spatial information. No wiring harnesses will be required, as the temperature-rise data will be measured via an IR camera. The resulting spatial data may be used to tomographically investigate the profile of plasmas.

    9. Imaging bolometer

      DOE Patents [OSTI]

      Wurden, G.A.

      1999-01-19

      Radiation-hard, steady-state imaging bolometer is disclosed. A bolometer employing infrared (IR) imaging of a segmented-matrix absorber of plasma radiation in a cooled-pinhole camera geometry is described. The bolometer design parameters are determined by modeling the temperature of the foils from which the absorbing matrix is fabricated by using a two-dimensional time-dependent solution of the heat conduction equation. The resulting design will give a steady-state bolometry capability, with approximately 100 Hz time resolution, while simultaneously providing hundreds of channels of spatial information. No wiring harnesses will be required, as the temperature-rise data will be measured via an IR camera. The resulting spatial data may be used to tomographically investigate the profile of plasmas. 2 figs.

    10. Relation between photospheric flow fields and the magnetic field distribution on the solar surface

      SciTech Connect (OSTI)

      Simon, G.W.; Title, A.M.; Topka, K.P.; Tarbell, T.D.; Shine, R.A.

      1988-04-01

      Using the technique of local correlation tracking on a 28 minute time sequence of white-light images of solar granulation, the horizontal flow field on the solar surface is measured. The time series was obtained by the Solar Optical Universal Polarimeter (SOUP) on Spacelab 2 (Space Shuttle flight 51-F) and is free from atmospheric blurring and distortion. The SOUP flow fields have been compared with carefully aligned magnetograms taken over a nine hour period at the Big Bear Solar Observatory before, during, and after the SOUP images. The flow field and the magnetic field agree in considerable detail: vectors which define the flow of the white-light intensity pattern (granulation) point toward magnetic field regions, magnetic fields surround flow cells, and magnetic features move along the flow arrows. The projected locations of free particles (corks) in the measured flow field congregate at the same locations where the magnetic field is observed. 31 references.

    11. VASCULAR-INTERVENTIONAL Haemodynamic imaging of thoracic stent-grafts

      E-Print Network [OSTI]

      Nicoud, Franck

      , depicting different patterns of flow (laminar, turbulent, stenosis-like) and local alterations of parietalVASCULAR-INTERVENTIONAL Haemodynamic imaging of thoracic stent-grafts by computational fluid combining mag- netic resonance imaging (MRI) and computational fluid dynamics (CFD) to obtain a patient

    12. Balanced Flow Geostrophic, Inertial, Gradient, and Cyclostrophic Flow

      E-Print Network [OSTI]

      Hennon, Christopher C.

      Balanced Flow Geostrophic, Inertial, Gradient, and Cyclostrophic Flow The types of atmospheric flows describe here have the following characteristics: 1) Steady state (meaning that the flows do surfaces) These are "idealized" flows, created by balances of horizontal forces. They provide a qualitative

    13. Productivity & Energy Flow

      E-Print Network [OSTI]

      Mitchell, Randall J.

      1 Productivity & Energy Flow Ecosystem approach, focuses: on flow of energy, water, and nutrients (capture) of energy by autotrophs Gross (total) Net (total ≠ costs) Secondary productivity- capture of energy by herbivores http://sciencebitz.com/?page_id=204 What Controls the Primary Productivity

    14. Elbow mass flow meter

      DOE Patents [OSTI]

      McFarland, A.R.; Rodgers, J.C.; Ortiz, C.A.; Nelson, D.C.

      1994-08-16

      The present invention includes a combination of an elbow pressure drop generator and a shunt-type mass flow sensor for providing an output which gives the mass flow rate of a gas that is nearly independent of the density of the gas. For air, the output is also approximately independent of humidity. 3 figs.

    15. Microelectromechanical flow control apparatus

      SciTech Connect (OSTI)

      Okandan, Murat (NE Albuquerque, NM)

      2009-06-02

      A microelectromechanical (MEM) flow control apparatus is disclosed which includes a fluid channel formed on a substrate from a first layer of a nonconducting material (e.g. silicon nitride). A first electrode is provided on the first layer of the nonconducting material outside the flow channel; and a second electrode is located on a second layer of the nonconducting material above the first layer. A voltage applied between the first and second electrodes deforms the fluid channel to increase its cross-sectional size and thereby increase a flow of a fluid through the channel. In certain embodiments of the present invention, the fluid flow can be decreased or stopped by applying a voltage between the first electrode and the substrate. A peristaltic pumping of the fluid through the channel is also possible when the voltage is applied in turn between a plurality of first electrodes and the substrate. A MEM flow control assembly can also be formed by providing one or more MEM flow control devices on a common substrate together with a submicron filter. The MEM flow control assembly can optionally include a plurality of pressure sensors for monitoring fluid pressure and determining flow rates through the assembly.

    16. Ab†initio construction of magnetic phase diagrams in alloys: The case of Fe1-xMnxPt

      DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

      Pujari, B. S.; Larson, P.; Antropov, V. P.; Belashchenko, K. D.

      2015-07-28

      A first-principles approach to the construction of concentration-temperature magnetic phase diagrams of metallic alloys is presented. The method employs self-consistent total energy calculations based on the coherent potential approximation for partially ordered and noncollinear magnetic states and is able to account for competing interactions and multiple magnetic phases. The application to the Fe1ĖxMnxPt ďmagnetic chameleonĒ system yields the sequence of magnetic phases at T = 0 and the c-T magnetic phase diagram in good agreement with experiment, and a new low-temperature phase is predicted at the Mn-rich end. The importance of non-Heisenberg interactions for the description of the magnetic phasemore†Ľdiagram is demonstrated.ę†less

    17. NIR imaging and modeling of the core of M100

      E-Print Network [OSTI]

      J. H. Knapen; R. F. Peletier; I. Shlosman; J. E. Beckman; C. H. Heller; R. S. de Jong

      1995-09-29

      High-resolution NIR and optical images are used to constrain a dynamical model of the circumnuclear star forming (SF) region in the barred galaxy M100 (=NGC 4321). Subarcsecond resolution allowed us to distinguish important morphological details which are easily misinterpreted when using images at lower resolution. Small leading arms observed in our K-band image of the nuclear region are reproduced in the gas flow in our model, and lead us to believe that part of the K light comes from young stars, which trace the gas flow.

    18. Effect of flow fluctuations and nonflow on elliptic flow methods

      E-Print Network [OSTI]

      Ollitrault, Jean-Yves

      2009-01-01

      24.10.Nz I. INTRODUCTION II. FLOW METHODS Elliptic ?ow hasin the participant plane. Flow methods involve variousow e?ects are negligible. Flow ?uctuations modify both the

    19. RSNA 2002: Image Fusion Image Fusion

      E-Print Network [OSTI]

      Pelizzari, Charles A.

      RSNA 2002: Image Fusion Image Fusion: Introduction to the Technology Charles A. Pelizzari, Ph.D. Department of Radiation and Cellular Oncology The University of Chicago #12;RSNA 2002: Image Fusion "Fusion and limitations) ∑Where do we need to go? (future directions) #12;RSNA 2002: Image Fusion Terminology

    20. Image Gallery

      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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenry Bellamy, Ph.D.FoodHydropower,PrincipalIdaho NationalA pIlyaImage

    1. Auxiliary field Monte-Carlo simulation of strong coupling lattice QCD for QCD phase diagram

      E-Print Network [OSTI]

      Terukazu Ichihara; Akira Ohnishi; Takashi Z. Nakano

      2014-10-07

      We study the QCD phase diagram in the strong coupling limit with fluctuation effects by using the auxiliary field Monte-Carlo method. We apply the chiral angle fixing technique in order to obtain finite chiral condensate in the chiral limit in finite volume. The behavior of order parameters suggests that chiral phase transition is the second order or crossover at low chemical potential and the first order at high chemical potential. Compared with the mean field results, the hadronic phase is suppressed at low chemical potential, and is extended at high chemical potential as already suggested in the monomer-dimer-polymer simulations. We find that the sign problem originating from the bosonization procedure is weakened by the phase cancellation mechanism; a complex phase from one site tends to be canceled by the nearest neighbor site phase as long as low momentum auxiliary field contributions dominate.

    2. Color neutrality effects in the phase diagram of the Polyakov--Nambu--Jona-Lasinio model

      SciTech Connect (OSTI)

      Dumm, D. Gomez; Blaschke, D. B.; Grunfeld, A. G.; Scoccola, N. N.

      2008-12-01

      The phase diagram of a two-flavor Polyakov-loop Nambu-Jona-Lasinio model is analyzed imposing the constraint of color charge neutrality. The main effect of this constraint is a coexistence of the chiral symmetry breaking ({chi}SB) and two-flavor superconducting phases. Additional effects are a shrinking of the {chi}SB domain in the T-{mu} plane and a shift of the end point to lower temperatures, but their quantitative importance is shadowed by the intrinsic uncertainties of the model. The effects can be understood in view of the presence of a nonvanishing color chemical potential {mu}{sub 8}, which is introduced to compensate the color charge density {rho}{sub 8} induced by a background color gauge mean field {phi}{sub 3}. At low temperatures and large chemical potentials the model exhibits a quarkyonic phase, which gets additional support from the diquark condensation.

    3. Dynamics in the quantum Hall effect and the phase diagram of graphene

      E-Print Network [OSTI]

      E. V. Gorbar; V. P. Gusynin; V. A. Miransky; I. A. Shovkovy

      2008-08-28

      The dynamics responsible for lifting the degeneracy of the Landau levels in the quantum Hall (QH) effect in graphene is studied by utilizing a low-energy effective model with a contact interaction. A detailed analysis of the solutions of the gap equation for Dirac quasiparticles is performed at both zero and nonzero temperatures. The characteristic feature of the solutions is that the order parameters connected with the QH ferromagnetism and magnetic catalysis scenarios necessarily coexist. The solutions reproduce correctly the experimentally observed novel QH plateaus in graphene in strong magnetic fields. The phase diagram of this system in the plane of temperature and electron chemical potential is analyzed. The phase transitions corresponding to the transitions between different QH plateaus in graphene are described.

    4. Phase diagram for the transition from photonic crystals to dielectric metamaterials

      E-Print Network [OSTI]

      Rybin, Mikhail V; Samusev, Kirill B; Belov, Pavel A; Kivshar, Yuri S; Limonov, Mikhail F

      2015-01-01

      Photonic crystals and metamaterials represent two seemingly different classes of artificial electromagnetic media but often they are composed of similar structural elements arranged in periodic lattices. The important question is how to distinguish these two types of periodic photonic structures when their parameters, such as dielectric permittivity and lattice spacing, vary continuously. Here, we discuss transitions between photonic crystals and all-dielectric metamaterials and introduce the concept of a phase diagram and an order parameter for such structured materials, based on the physics of Mie and Bragg resonances. We show that a periodic photonic structure transforms into a metamaterial when the Mie gap opens up below the lowest Bragg bandgap where the homogenization approach can be justified and the effective permeability becomes negative. Our theoretical approach is confirmed by detailed microwave experiments for a metacrystal composed of a square lattice of glass tubes filled with heated water. This...

    5. Polychromatic phase diagram for $n$-level atoms interacting with $\\ell$ modes of electromagnetic field

      E-Print Network [OSTI]

      Sergio Cordero; Eduardo Nahmad-Achar; Ramůn Lůpez-PeŮa; Octavio CastaŮos

      2015-08-28

      A system of $N_a$ atoms of $n$-levels interacting dipolarly with $\\ell$ modes of electromagnetic field is considered. The energy surface of the system is constructed from the direct product of the coherent states of U$(n)$ in the totally symmetric representation for the matter times the $\\ell$ coherent states of the electromagnetic field. A variational analysis shows that the collective region is divided into $\\ell$ zones, inside each of which only one mode of the electromagnetic field contributes to the ground state. In consequence, the polychromatic phase diagram for the ground state naturally divides itself into monochromatic regions. For the case of $3$-level atoms in the $\\Xi$-configuration in the presence of $2$ modes, the variational calculation is compared with the exact quantum solution showing that both are in agreement.

    6. Ultrasonic study of the gelation of gelatin: phase diagram, hysteresis and kinetics

      E-Print Network [OSTI]

      N. G. Parker; M. J. W. Povey

      2010-10-28

      We map the ultrasonic (8 MHz) speed and attenuation of edible-grade gelatin in water, exploring the key dependencies on temperature, concentration and time. The ultrasonic signatures of the sol-gel transition, confirmed by rheological measurements, and incomplete gel formation at low concentrations, enable a phase diagram of the system to be constructed. Sensitivity is also demonstrated to the kinetics of gel formation and melting, and associated hysteresis effects upon cyclic temperature sweeps. Furthermore, simple acoustic models of the sol and gel state enable estimation of the speed of sound and compressibility of gelatin. Our results demonstrate the potential of ultrasonic measurements to characterise the structure and visco-elasticity of gelatin hydrogels.

    7. Ultrasonic study of the gelation of gelatin: phase diagram, hysteresis and kinetics

      E-Print Network [OSTI]

      Parker, N G

      2010-01-01

      We map the ultrasonic (8 MHz) speed and attenuation of edible-grade gelatin in water, exploring the key dependencies on temperature, concentration and time. The ultrasonic signatures of the sol-gel transition, confirmed by rheological measurements, and incomplete gel formation at low concentrations, enable a phase diagram of the system to be constructed. Sensitivity is also demonstrated to the kinetics of gel formation and melting, and associated hysteresis effects upon cyclic temperature sweeps. Furthermore, simple acoustic models of the sol and gel state enable estimation of the speed of sound and compressibility of gelatin. Our results demonstrate the potential of ultrasonic measurements to characterise the structure and visco-elasticity of gelatin hydrogels.

    8. Phase diagram of Rydberg atoms with repulsive van der Waals interaction

      SciTech Connect (OSTI)

      Osychenko, O. N.; Astrakharchik, G. E.; Boronat, J.; Lutsyshyn, Y.; Lozovik, Yu. E.

      2011-12-15

      We report a quantum Monte Carlo calculation of the phase diagram of bosons interacting with a repulsive inverse sixth power pair potential, a model for assemblies of Rydberg atoms in the local van der Waals blockade regime. The model can be parametrized in terms of just two parameters, the reduced density and temperature. Solidification happens to the fcc phase. At zero temperature, the transition density is found with the diffusion Monte Carlo method at density {rho}=3.9 (({Dirac_h}/2{pi}){sup 2}/mC{sub 6}){sup 3/4}, where C{sub 6} is the strength of the interaction. The solidification curve at nonzero temperature is studied with the path-integral Monte Carlo approach and is compared with transitions in corresponding harmonic and classical crystals. Relaxation mechanisms are considered in relation to present experiments.

    9. Phase diagram of power law and Lennard-Jones systems: Crystal phases

      SciTech Connect (OSTI)

      Travesset, Alex, E-mail: trvsst@ameslab.gov [Department of Physics and Astronomy and Ames Lab, Iowa State University Ames, Ames, Iowa 50011 (United States)

      2014-10-28

      An extensive characterization of the low temperature phase diagram of particles interacting with power law or Lennard-Jones potentials is provided from Lattice Dynamical Theory. For power law systems, only two lattice structures are stable for certain values of the exponent (or softness) (A15, body centered cube (bcc)) and two more (face centered cubic (fcc), hexagonal close packed (hcp)) are always stable. Among them, only the fcc and bcc are equilibrium states. For Lennard-Jones systems, the equilibrium states are either hcp or fcc, with a coexistence curve in pressure and temperature that shows reentrant behavior. The hcp solid never coexists with the liquid. In all cases analyzed, for both power law and Lennard-Jones potentials, the fcc crystal has higher entropy than the hcp. The role of anharmonic terms is thoroughly analyzed and a general thermodynamic integration to account for them is proposed.

    10. Shear Viscosity and Phase Diagram from Polyakov$-$Nambu$-$Jona-Lasinio model

      E-Print Network [OSTI]

      Sanjay K. Ghosh; Sibaji Raha; Rajarshi Ray; Kinkar Saha; Sudipa Upadhaya

      2014-11-12

      We discuss a detailed study of the variation of shear viscosity, $\\eta$, with temperature and baryon chemical potential within the framework of Polyakov$-$Nambu$-$Jona-Lasinio model. $\\eta$ is found to depend strongly on the spectral width of the quasi-particles present in the model. The variation of $\\eta$ across the phase diagram has distinctive features for different kinds of transitions. These variations have been used to study the possible location of the Critical End Point (CEP), and cross-checked with similar studies of variation of specific heat. Finally using a parameterization of freeze-out surface in heavy-ion collision experiments, the variation of shear viscosity to entropy ratio has also been discussed as a function of the center of mass energy of collisions.

    11. Activity Diagrams for DEVS Models: A Case Study Modeling Health Care Behavior

      SciTech Connect (OSTI)

      Ozmen, Ozgur; Nutaro, James J

      2015-01-01

      Discrete Event Systems Specification (DEVS) is a widely used formalism for modeling and simulation of discrete and continuous systems. While DEVS provides a sound mathematical representation of discrete systems, its practical use can suffer when models become complex. Five main functions, which construct the core of atomic modules in DEVS, can realize the behaviors that modelers want to represent. The integration of these functions is handled by the simulation routine, however modelers can implement each function in various ways. Therefore, there is a need for graphical representations of complex models to simplify their implementation and facilitate their reproduction. In this work, we illustrate the use of activity diagrams for this purpose in the context of a health care behavior model, which is developed with an agent-based modeling paradigm.

    12. ROTATIONAL AND VIBRATIONAL RAMAN SPECTROSCOPY FOR FLOW FROM AN UNDEREXPANDED JET NOZZLE†

      E-Print Network [OSTI]

      Bayeh, Alexander

      2008-08-19

      The objective of this work is the construction of a fully functioning Raman line imaging spectrometer; and the measurement of pressure, temperature, and chemical concentration in supersonic flows issuing from a jet nozzle. The measurements...

    13. Optical monitor for observing turbulent flow

      DOE Patents [OSTI]

      Albrecht, Georg F. (Livermore, CA); Moore, Thomas R. (Rochester, NY)

      1992-01-01

      The present invention provides an apparatus and method for non-invasively monitoring turbulent fluid flows including anisotropic flows. The present invention uses an optical technique to filter out the rays travelling in a straight line, while transmitting rays with turbulence induced fluctuations in time. The output is two dimensional, and can provide data regarding the spectral intensity distribution, or a view of the turbulence in real time. The optical monitor of the present invention comprises a laser that produces a coherent output beam that is directed through a fluid flow, which phase-modulates the beam. The beam is applied to a temporal filter that filters out the rays in the beam that are straight, while substantially transmitting the fluctuating, turbulence-induced rays. The temporal filter includes a lens and a photorefractive crystal such as BaTiO.sub.3 that is positioned in the converging section of the beam near the focal plane. An imaging system is used to observe the filtered beam. The imaging system may take a photograph, or it may include a real time camera that is connected to a computer. The present invention may be used for many purposes including research and design in aeronautics, hydrodynamics, and combustion.

    14. Bedrock Erosion by Granular Flow

      E-Print Network [OSTI]

      Hsu, Leslie

      2010-01-01

      of boulders later in the flow when the matrix has thickenedMaximum height of the flow is 3.3 m. Appendix A true storyThe physics of debris flows, Reviews of Geophysics 35(3),

    15. Magnetically stimulated fluid flow patterns

      SciTech Connect (OSTI)

      Martin, Jim; Solis, Kyle

      2014-03-06

      Sandia National Laboratories' Jim Martin and Kyle Solis explain research on the effects of magnetic fields on fluid flows and how they stimulate vigorous flows. Fluid flow is a necessary phenomenon in everything from reactors to cooling engines in cars.

    16. Magnetically stimulated fluid flow patterns

      ScienceCinema (OSTI)

      Martin, Jim; Solis, Kyle

      2014-08-06

      Sandia National Laboratories' Jim Martin and Kyle Solis explain research on the effects of magnetic fields on fluid flows and how they stimulate vigorous flows. Fluid flow is a necessary phenomenon in everything from reactors to cooling engines in cars.

    17. Redox Flow Batteries, a Review

      E-Print Network [OSTI]

      Weber, Adam Z.

      2013-01-01

      of a Vanadium Redox-Flow Battery to Maintain Power Quality,"Fuel System Using Redox Flow Battery," ed: WO Patentand D. B. Hickey, "Redox Flow Battery System for Distributed

    18. Enviro Hurdles: Instream Flow | Department of Energy

      Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

      Hurdles: Instream Flow Enviro Hurdles: Instream Flow Enviro Hurdles: Instream Flow 76enviornlbevelhimer4.pptx More Documents & Publications Instream Flow Project Development and...

    19. Flow Map Manager†

      E-Print Network [OSTI]

      Moya, Maria J

      2011-11-24

      Long-distance bus companies, operate services along routes which have a flow of passengers. Along a route some passengers will leave the bus while others join. To monitor demand sufficiently well a tool is required which can help estimate...

    20. Complex Flow Workshop Report

      SciTech Connect (OSTI)

      none,

      2012-05-01

      This report documents findings from a workshop on the impacts of complex wind flows in and out of wind turbine environments, the research needs, and the challenges of meteorological and engineering modeling at regional, wind plant, and wind turbine scales.

    1. Optical flow switching

      E-Print Network [OSTI]

      Chan, Vincent W. S.

      Present-day networks are being challenged by dramatic increases in bandwidth demand of emerging applications. We will explore a new transport, ldquooptical flow switchingrdquo, that will enable significant growth and ...

    2. Parallel flow diffusion battery

      DOE Patents [OSTI]

      Yeh, H.C.; Cheng, Y.S.

      1984-01-01

      A parallel flow diffusion battery for determining the mass distribution of an aerosol has a plurality of diffusion cells mounted in parallel to an aerosol stream, each diffusion cell including a stack of mesh wire screens of different density.

    3. Parallel flow diffusion battery

      DOE Patents [OSTI]

      Yeh, Hsu-Chi (Albuquerque, NM); Cheng, Yung-Sung (Albuquerque, NM)

      1984-08-07

      A parallel flow diffusion battery for determining the mass distribution of an aerosol has a plurality of diffusion cells mounted in parallel to an aerosol stream, each diffusion cell including a stack of mesh wire screens of different density.

    4. Electrochemical flow capacitors

      DOE Patents [OSTI]

      Gogotsi, Yury; Presser, Volker; Kumbar, Emin Caglan

      2015-11-05

      The present invention generally relates to devices for energy storage technologies, and more particularly to electrochemical flow capacitor systems and applications. In some aspects, these flow capacitors have at least one electrode comprising a non-stationary solid or semi-solid composition comprising supercapacitive particles and an electrolytic solvent in electrical communication with at least one current collector, and energy is stored and/or released by charging and/or discharging the electrode(s).

    5. Electrochemical flow capacitors

      DOE Patents [OSTI]

      Gogotsi, Yury; Presser, Volker; Kumbur, Emin Caglan

      2015-10-27

      The present invention generally relates to devices for energy storage technologies, and more particularly to electrochemical flow capacitor systems and applications. In some aspects, these flow capacitors have at least one electrode comprising a non-stationary solid or semi-solid composition comprising supercapacitive particles and an electrolytic solvent in electrical communication with at least one current collector, and energy is stored and/or released by charging and/or discharging the electrode(s).

    6. Radiohalogenated thienylethylamine derivatives for evaluating local cerebral blood flow

      DOE Patents [OSTI]

      Goodman, Mark M. (Knoxville, TN); Knapp, Jr., Furn F. (Oak Ridge, TN)

      1990-01-01

      Radiopharmaceuticals useful in brain imaging comprising radiohalogenated thienylethylamine derivatives. The compounds are 5-halo-thiophene-2-isopropyl amines able to cross the blood-brain barrier and be retained for a sufficient length of time to allow the evaluation or regional blood flow by radioimaging of the brain.

    7. In vivo imaging of C. elegans ASH neurons: cellular response and adaptation to chemical repellents

      E-Print Network [OSTI]

      Schafer, William R.

      Erratum In vivo imaging of C. elegans ASH neurons: cellular response and adaptation to chemical (arbitrary units) Intensity 10 mM copper 3 s 2 s 1 s 0 s -1 s 1.6 2.1 m)Ķ( YFP CFP Dendrite Soma ASH Time (s following panels. Scale bar, 200 mm. (B) Diagram of the animal's head with one of the two symmetrical ASH

    8. Conjugate flow action functionals

      E-Print Network [OSTI]

      Daniele Venturi

      2013-10-15

      We present a new general method to construct an action functional for a non-potential field theory. The key idea relies on representing the governing equations of the theory relative to a diffeomorphic flow of curvilinear coordinates which is assumed to be functionally dependent on the solution field. Such flow, which will be called the conjugate flow of the theory, evolves in space and time similarly to a physical fluid flow of classical mechanics and it can be selected in order to symmetrize the Gateaux derivative of the field equations with respect to suitable local bilinear forms. This is equivalent to requiring that the governing equations of the field theory can be derived from a principle of stationary action on a Lie group manifold. By using a general operator framework, we obtain the determining equations of such manifold and the corresponding conjugate flow action functional. In particular, we study scalar and vector field theories governed by second-order nonlinear partial differential equations. The identification of transformation groups leaving the conjugate flow action functional invariant could lead to the discovery of new conservation laws in fluid dynamics and other disciplines.

    9. Subcritical transition to turbulence of a precessing flow in a cylindrical vessel

      E-Print Network [OSTI]

      Herault, Johann; Giesecke, Andre; Stefani, Frank

      2015-01-01

      The transition to turbulence in a precessing cylindrical vessel is experimentally investigated. Our measurements are performed for a { nearly-resonant} configuration with an initially laminar flow dominated by an inertial mode with azimuthal wave number $m=1$ superimposed on a solid body rotation. By increasing the precession ratio, we observe a transition from the laminar to a non-linear regime, which then breakdowns to turbulence for larger precession ratio. Our measurements show that the transition to turbulence is subcritical, with a discontinuity of the wall-pressure and the power consumption at the threshold $\\epsilon_{LT}$. The turbulence is self-sustained below this threshold, describing a bifurcation diagram with a hysteresis. In this range of the control parameters, the turbulent flows can suddenly collapse after a finite duration, leading to a definitive relaminarization of the flow. The average lifetime $\\langle \\tau \\rangle$ of the turbulence increases rapidly when $\\epsilon$ tends to $\\epsilon_{...

    10. Diagram of the Biofuel Production Process (SPORL -Alcohol Production):Introduction: The Northwest Advanced Renewables Alliance (NARA) is an organization

      E-Print Network [OSTI]

      Collins, Gary S.

      Pretreatment for Cellulosic Ethanol Production: Technology and Energy Consumption Evaluation." BioresourceDiagram of the Biofuel Production Process (SPORL - Alcohol Production):Introduction: The Northwest production industry in the Northwest United States. One of NARA's goals is to develop a production process

    11. Effect of rapid solidification on stainless steel weld metal microstructures and its implications on the Schaeffler diagram

      SciTech Connect (OSTI)

      David, S.A.; Vitek, J.M.; Reed, R.W.; Hebble, T.L.

      1987-09-01

      An investigation was carried out to determine the effect of rapid solidification on the weld metal microstructure of austenitic stainless steels and its implication on the ferrite constitution diagram. A wide variety of stainless steels were laser welded at different welding speeds and laser power levels. Results indicate that both weld pool cooling rate and the postsolidification solid state cooling rates have a profound effect on the microstructures. For the steels investigated, the microstructures ranged from duplex austenite (..gamma..) + ferrite (delta) to fully austenitic or fully ferritic. These microstructures were found to be sensitive to both cooling rates and composition. The observed results are rationalized based on rapid solidification theory. This investigation indicates that solidification rates and postsolidification cooling rates have a profound effect on the observed microstructures, thus making it impossible to predict the microstructures of rapidly cooled weld metal from the conventional constitution diagrams. The influence of the observations made in this investigation on the Schaeffler diagram is demonstrated, and possible corrections to the constitution diagram incorporating the cooling rate effects are proposed. 23 refs., 17 figs., 4 tabs.

    12. Liquid-glass transition phase diagram for concentrated charge-stabilized colloids S. K. Lai and W. J. Ma

      E-Print Network [OSTI]

      Liquid-glass transition phase diagram for concentrated charge-stabilized colloids S. K. Lai and W screening case, in an extended charge-stabilized suspension and, for the weak screening case, in a more colloidal suspensions, and it can, therefore, be realized experimentally. In addition, variation

    13. Ergodic-nonergodic phase diagram for a concentrated suspension of charge-stabilized colloids: Rescaled mean spherical approximation

      E-Print Network [OSTI]

      Ergodic-nonergodic phase diagram for a concentrated suspension of charge-stabilized colloids calculate the static structure factor of a concentrated suspension of charge-stabilized colloids using at a high volume fraction 0.2 when the coupling strength of charged colloids has attained certain high

    14. Synthetic aperture imaging for three dimensional resolution of fluid flows

      E-Print Network [OSTI]

      Belden, Jesse (Jesse Levi)

      2011-01-01

      Fluid mechanics and instrumentation have a long history together, as experimental fluids studies play an important role in describing a more complete physical picture in a variety of problems. Presently. state-of-the-art ...

    15. Imaging, Characterizing, and Modeling of Fracture Networks and Fluid Flow

      Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

      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 Delicious Rank EERE:FinancingPetroleum12,ExecutiveFinancingREnergy Tools forEnergy IllinoisIlluminatedin EGS

    16. Imaging, Characterizing, and Modeling of Fracture Networks and Fluid Flow

      Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

      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 Delicious Rank EERE:FinancingPetroleum12,ExecutiveFinancingREnergy Tools forEnergy IllinoisIlluminatedin EGSin

    17. Fracture Network and Fluid Flow Imaging for EGS Applications from

      Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

      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 Delicious Rank EERE:FinancingPetroleum12, 2015ExecutiveFluorescent LampFort Collins,47328 Vol. 77, No.

    18. Fluid Flow Estimation Through Integration of Physical Flow Configurations

      E-Print Network [OSTI]

      Garbe, Christoph S.

      Fluid Flow Estimation Through Integration of Physical Flow Configurations Christoph S. Garbe IWR, University of Heidelberg Christoph.Garbe@iwr.uni-heidelberg.de Abstract. The measurement of fluid flows is an emerging field for op- tical flow computation. In a number of such applications, a tracer is visualized

    19. Robust processing of optical flow of fluids Ashish Doshi and Adrian G. Bors, Senior Member, IEEE

      E-Print Network [OSTI]

      Bors, Adrian

      to the change of illumination, image noise and the perspective projection when representing a 3-D scene in a 2-D1 Robust processing of optical flow of fluids Ashish Doshi and Adrian G. Bors, Senior Member, IEEE changing patterns which poses chal- lenges to existing optical flow estimation methods. The proposed

    20. Physically-Based Interactive Flow Visualization Based on Schlieren and Interferometry

      E-Print Network [OSTI]

      Utah, University of

      and interferometry images of time-varying scalar fields derived from computational fluid dynamics (CFD) data. Our advances in CFD have produced a wealth of simulated flow data [6], [8], [13], [14]. Understanding these flows is of great importance for applications ranging from aircraft design to combustion analysis [20

    1. A Comparison of Two Camera Configurations For Optic-Flow Based Navigation of a UAV

      E-Print Network [OSTI]

      Sukhatme, Gaurav S.

      optic flow. The two configurations were developed for use on an autonomous helicopter, with the aim an autonomous helicopter. Optic flow information from the images is used to determine the relative distance to obstacles on each side of the helicopter. We show that on average, both camera configurations are equally

    2. Optical Flow Estimation using Laplacian Mesh Energy Wenbin Li Darren Cosker Matthew Brown Rui Tang

      E-Print Network [OSTI]

      Martin, Ralph R.

      Optical Flow Estimation using Laplacian Mesh Energy Wenbin Li Darren Cosker Matthew Brown Rui Tang.p.cosker,m.brown,r.tang}@bath.ac.uk Abstract In this paper we present a novel non-rigid optical flow algorithm for dense image correspondence and non-rigid registration. The algorithm uses a unique Laplacian Mesh Energy term to encourage local

    3. The Environments of Supernovae in Post-Refurbishment Hubble Space Telescope Images

      E-Print Network [OSTI]

      Van Dyk, S D; Barth, A J; Filippenko, A V

      1999-01-01

      The locations of supernovae in the local stellar and gaseous environment in galaxies contain important clues to their progenitor stars. Access to this information, however, has been hampered by the limited resolution achieved by ground-based observations. High spatial resolution Hubble Space Telescope (HST) images of galaxy fields in which supernovae had been observed can improve the situation considerably. We have examined the immediate environments of a few dozen supernovae using archival post-refurbishment HST images. Although our analysis is limited due to signal-to-noise ratio and filter bandpass considerations, the images allow us for the first time to resolve individual stars in, and to derive detailed color-magnitude diagrams for, several environments. We are able to place more rigorous constraints on the masses of these supernovae. A search was made for late-time emission from supernovae in the archival images, and for the progenitor stars in presupernova images of the host galaxies. We have detected...

    4. A new diagram of the global energy balance Martin Wild, Doris Folini, Christoph Schr, Norman Loeb, Ellsworth G. Dutton et al.

      E-Print Network [OSTI]

      Fischlin, Andreas

      A new diagram of the global energy balance Martin Wild, Doris Folini, Christoph Schšr, Norman Loeb://proceedings.aip.org/about/rights_permissions #12;A New Diagram of the Global Energy Balance Martin Wilda , Doris Folinia , Christoph Schšra of the global mean energy balance, adapted from the study by Wild et al. (2013) [1] with two slight

    5. Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I.Skillicorn 1 Azimuthal asymmetry

      E-Print Network [OSTI]

      Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I.Skillicorn 1 Azimuthal asymmetry using energy flow method Azimuthal angle distribution at Q2 >100 GeV2 Energy flow method.Ukleja on behalf of the ZEUS Collaboration #12; Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I

    6. Flow Batteries A Historical Perspective

      E-Print Network [OSTI]

      Flow Batteries A Historical Perspective Robert F. Savinell Case Western Reserve University Department of Chemical Engineering DOE Flow Battery Workshop March 2012 #12;2 OUTLINE ∑The first flow cell? ∑Review articles- documented progress ∑Early NASA Work- some learning ∑Fuel Cell and Flow Battery

    7. Two-phase flow studies

      SciTech Connect (OSTI)

      Hanold, R.J.

      1983-12-01

      The two-phase flow program is directed at understanding the hydrodynamics of two-phase flows. The two-phase flow regime is characterized by a series of flow patterns that are designated as bubble, slug, churn, and annular flow. Churn flow has received very little scientific attention. This lack of attention cannot be justified because calculations predict that the churn flow pattern will exist over a substantial portion of the two-phase flow zone in producing geothermal wells. The University of Houston is experimentally investigating the dynamics of churn flow and is measuring the holdup over the full range of flow space for which churn flow exists. These experiments are being conducted in an air/water vertical two-phase flow loop. Brown University has constructed and is operating a unique two-phase flow research facility specifically designed to address flow problems of relevance to the geothermal industry. An important feature of the facility is that it is dedicated to two-phase flow of a single substance (including evaporation and condensation) as opposed to the case of a two-component two-phase flow. This facility can be operated with horizontal or vertical test sections of constant diameter or with step changes in diameter to simulate a geothermal well profile.

    8. Measurement and modeling of liquid film thickness evolution in stratified two-phase microchannel flows

      E-Print Network [OSTI]

      Hidrovo, Carlos H.

      in microchannels. Some liquid imaging work has been performed using gamma densitometry, X-ray tomo- graphy 20 January 2006; accepted 27 July 2006 Available online 27 September 2006 Abstract Polymer: Stratified flow; Microchannel; Fluorescent imaging; Two-phase; Liquid film 1. Introduction The polymer

    9. Piezoelectric axial flow microvalve

      DOE Patents [OSTI]

      Gemmen, Randall; Thornton, Jimmy; Vipperman, Jeffrey S.; Clark, William W.

      2007-01-09

      This invention is directed to a fuel cell operable with a quantity of fuel and a quantity of an oxidizer to produce electrical power, the fuel cell including a fuel cell body including a labyrinth system structured to permit the fuel and the oxidizer to flow therethrough; at least a first catalyst in fluid communication with the labyrinth; and at least a first microvalve operably disposed within at least a portion of the labyrinth. The microvalve utilizes a deflectable member operable upon the application of a voltage from a voltage source. The microvalve includes an elongated flow channel formed therein and extending substantially longitudinally between the first and second ends to permit substantially longitudinal flow of the fluid therethrough and between the first and second ends; and the deflectable member disposed on the valve body, the deflectable member including at least a first piezoelectric portion that is piezoelectrically operable to deflect the deflectable member between an open position and a closed position upon the application of a voltage, the deflectable member in the closed position being operable to resist the flow of the fluid through the flow channel.

    10. Image Georeferencing Lesson 4: Image Georeferencing

      E-Print Network [OSTI]

      Butler, Christopher J.

      vector digitizing. You should read the section "Coordinate Transformation", in Chapter 4 of the GIS georeferencing, also known as image registration or image transformation. We'll then update a data layers through mapping vegetation, wetlands, and land use change. While many images are provided in digital formats

    11. Object Segmentation by Alignment of Poselet Activations to Image Contours Thomas Brox1, Lubomir Bourdev23, Subhransu Maji2, Jitendra Malik2

      E-Print Network [OSTI]

      Maji, Subhransu

      of subcategories boat sailboat, ocean liner, motorboat aeroplane propeller plane, jet, military aircraft bird to the image edges with variational optical flow Competitive spatial integration Dealing with overlapping

    12. Fermilab | Press Room | Images

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

      Fermilab constructs pioneering accelerator test facility: photos, videos & graphics Click on links below images for medium and high-resolution jpeg images. When using this...

    13. Genotype-based Case-Control Analysis, Violation of Hardy-Weinberg Equilibrium, and Phase Diagrams

      E-Print Network [OSTI]

      Young Ju Suh; Wentian Li

      2008-03-12

      We study in detail a particular statistical method in genetic case-control analysis, labeled "genotype-based association", in which the two test results from assuming dominant and recessive model are combined in one optimal output. This method differs both from the allele-based association which artificially doubles the sample size, and the direct chi-square test on 3-by-2 contingency table which may overestimate the degree of freedom. We conclude that the comparative advantage (or disadvantage) of the genotype-based test over the allele-based test mainly depends on two parameters, the allele frequency difference delta and the Hardy-Weinberg disequilibrium coefficient difference delta_epsilon. Six different situations, called "phases", characterized by the two X^2 test statistics in allele-based and genotype-based test, are well separated in the phase diagram parameterized by delta and delta_epsilon. For two major groups of phases, a single parameter theta = tan^-1 (delta/delta_epsilon) is able to achieves an almost perfect phase separation. We also applied the analytic result to several types of disease models. It is shown that for dominant and additive models, genotype-based tests are favored over allele-based tests.

    14. Gutzwiller charge phase diagram of cuprates, including electronĖphonon coupling effects

      DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

      Markiewicz, R. S.; Seibold, G.; Lorenzana, J.; Bansil, A.

      2015-02-01

      Besides significant electronic correlations, high-temperature superconductors also show a strong coupling of electrons to a number of lattice modes. Combined with the experimental detection of electronic inhomogeneities and ordering phenomena in many high-Tc compounds, these features raise the question as to what extent phonons are involved in the associated instabilities. Here we address this problem based on the Hubbard model including a coupling to phonons in order to capture several salient features of the phase diagram of hole-doped cuprates. Charge degrees of freedom, which are suppressed by the large Hubbard U near half-filling, are found to become active at amore†Ľfairly low doping level. We find that possible charge order is mainly driven by Fermi surface nesting, with competition between a near-(?, ?) order at low doping and antinodal nesting at higher doping, very similar to the momentum structure of magnetic fluctuations. The resulting nesting vectors are generally consistent with photoemission and tunneling observations, evidence for charge density wave order in YBa?Cu?O7-? including Kohn anomalies, and suggestions of competition between one- and two-q-vector nesting.ę†less

    15. Color--Magnitude Diagram and Luminosity Function of M4 Near the Hydrogen-Burning Limit

      E-Print Network [OSTI]

      Bedin, L R; King, I R; Piotto, G; Bedin, Luigi R.; Anderson, Jay; King, Ivan R.; Piotto, Giampaolo

      2001-01-01

      A proper-motion separation of M4 members from field stars, using deep HST observations separated by a time base-line of 5 years, allows us to study a pure sample of cluster main-sequence stars almost to the minimum mass for hydrogen burning. High-precision photometry shows how badly current theoretical models fail to reproduce the color-magnitude diagram of low-mass stars of moderate metallicity ([M/H] ~ -1). This inability of theory to reproduce the luminosity-radius relation casts doubt on the theoretical mass-luminosity relation, which is needed to convert the observed luminosity function (LF) into a mass function (MF), as well as to convert our locally determined LF into a global MF. To the extent that we trust theoretical M-L relations for such transformations, we obtain a flat MF from the LF, and some indication that theoretical masses might be too low at a given luminosity, near the H-burning limit.

    16. Color--Magnitude Diagram and Luminosity Function of M4 Near the Hydrogen-Burning Limit

      E-Print Network [OSTI]

      Luigi R. Bedin; Jay Anderson; Ivan R. King; Giampaolo Piotto

      2001-09-05

      A proper-motion separation of M4 members from field stars, using deep HST observations separated by a time base-line of 5 years, allows us to study a pure sample of cluster main-sequence stars almost to the minimum mass for hydrogen burning. High-precision photometry shows how badly current theoretical models fail to reproduce the color-magnitude diagram of low-mass stars of moderate metallicity ([M/H] ~ -1). This inability of theory to reproduce the luminosity-radius relation casts doubt on the theoretical mass-luminosity relation, which is needed to convert the observed luminosity function (LF) into a mass function (MF), as well as to convert our locally determined LF into a global MF. To the extent that we trust theoretical M-L relations for such transformations, we obtain a flat MF from the LF, and some indication that theoretical masses might be too low at a given luminosity, near the H-burning limit.

    17. Structure, thermodynamic properties, and phase diagrams of few colloids confined in a spherical pore

      E-Print Network [OSTI]

      IvŠn Paganini; Claudio Pastorino; Ignacio Urrutia

      2015-04-09

      We study a system of few colloids confined in a small spherical cavity by event driven molecular dynamics simulations in the canonical ensemble. The colloidal particles interact through a short range square-well potential, which takes into account the basic elements of attraction and excluded-volume repulsion of the interaction among colloids. We analyze the structural and thermodynamic properties of this few-body confined system in the framework of the theory of inhomogeneous fluids. Pair correlation functions and density profiles across the cavity are used to determine the structure of the system and the spatial characteristics of its inhomogeneities. Pressure on the walls, internal energy and surface quantities such as surface tension and adsorption are also analyzed for the whole range of densities, temperatures and number of particles considered. We have characterized the structure of systems from 2 to 6 confined particles as function of density and temperature, identifying the distinctive qualitative behaviors all over the thermodynamic plane $T-\\rho$ in a few-particle equivalence to phase diagrams of macroscopic systems. Applying the extended law of corresponding states the square well interaction is mapped to the Asakura-Oosawa model for colloid-polymer mixtures. We link explicitly the temperature in the confined square-well fluid to the equivalent packing fraction of polymers in the Asakura-Oosawa model. Using this approach we study the confined system of few colloids in a colloid-polymer mixture.

    18. Multiphase cooling flows

      E-Print Network [OSTI]

      Peter A. Thomas

      1996-08-20

      I discuss the multiphase nature of the intracluster medium whose neglect can lead to overestimates of the baryon fraction of clusters by up to a factor of two. The multiphase form of the cooling flow equations are derived and reduced to a simple form for a wide class of self-similar density distributions. It is shown that steady-state cooling flows are \\emph{not} consistent with all possible emissivity profiles which can therefore be used as a test of the theory. In combination, they provide strong constraints on the mass distribution within the cooling radius.

    19. Variable Refrigerant Flow HVAC†

      E-Print Network [OSTI]

      Jones, S.

      2013-01-01

      Variable refrigerant flow technology HVAC CATEE 2013 San Antonio, TX ESL-KT-13-12-33 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 What is the acronym VRF? ? Variable Refrigerant Flow Operates like a... heat pump utilizing VFD Inverter Compressors and LEVís Unlike conventional commercial and residential HVAC systems in the USA The predominate method of cooling and heating in the world ESL-KT-13-12-33 CATEE 2013: Clean Air Through Energy Efficiency...

    20. Flow cytometry apparatus

      DOE Patents [OSTI]

      Pinkel, Daniel (Walnut Creek, CA)

      1991-01-01

      An obstruction across the flow chamber creates a one dimensional convergence of a sheath fluid. A passageway in the construction directs flat cells near to the area of one dimensional convergence in the sheath fluid to provide proper orientation of flat cells at fast rates.

    1. US energy flow, 1991

      SciTech Connect (OSTI)

      Borg, I.Y.; Briggs, C.K.

      1992-06-01

      Trends in energy consumption and assessment of energy sources are discussed. Specific topics discussed include: energy flow charts; comparison of energy use with 1990 and earlier years; supply and demand of fossil fuels (oils, natural gas, coal); electrical supply and demand; and nuclear power.

    2. Flow cytometry apparatus

      DOE Patents [OSTI]

      Pinkel, D.

      1987-11-30

      An obstruction across the flow chamber creates a one-dimensional convergence of a sheath fluid. A passageway in the obstruction directs flat cells near to the area of one-dimensional convergence in the sheath fluid to provide proper orientation of flat cells at fast rates. 6 figs.

    3. ENERGY FLOWS CLIMATE CHANGE

      E-Print Network [OSTI]

      Schwartz, Stephen E.

      ENERGY FLOWS FORCINGS CLIMATE CHANGE A REALLY TOUGH PROBLEM Stephen E. Schwartz, BNL, 7-20-11 www average temperature 15¬įC or 59¬įF #12;ATMOSPHERIC RADIATION Power per area Energy per time per area Unit" temperature to radiative flux. #12;GLOBAL ENERGY BALANCE Global and annual average energy fluxes in watts per

    4. Two Phase Flow Measurements by Nuclear Magnetic Resonance (NMR)

      SciTech Connect (OSTI)

      Altobelli, Stephen A; Fukushima, Eiichi

      2006-08-14

      In concentrated suspensions, there is a tendency for the solid phase to migrate from regions of high shear rate to regions of low shear (Leighton & Acrivos, 1987). In the early years that our effort was funded by the DOE Division of Basic Energy Science, quantitative measurement of this process in neutrally buoyant suspensions was a major focus (Abbott, et al., 1991; Altobelli, et al., 1991). Much of this work was used to improve multi-phase numerical models at Sandia National Laboratories. Later, our collaborators at Sandia and the University of New Mexico incorporated body forces into their numerical models of suspension flow (Rao, Mondy, Sun, et al., 2002). We developed experiments that allow us to study flows driven by buoyancy, to characterize these flows in well-known and useful engineering terms (Altobelli and Mondy, 2002) and to begin to explore the less well-understood area of flows with multiple solid phases (Beyea, Altobelli, et al., 2003). We also studied flows that combine the effects of shear and buoyancy, and flows of suspensions made from non-Newtonian liquids (Rao, Mondy, Baer, et al, 2002). We were able to demonstrate the usefulness of proton NMR imaging of liquid phase concentration and velocity and produced quantitative data not obtainable by other methods. Fluids flowing through porous solids are important in geophysics and in chemical processing. NMR techniques have been widely used to study liquid flow in porous media. We pioneered the extension of these studies to gas flows (Koptyug, et al, 2000, 2000, 2001, 2002). This extension allows us to investigate a wider range of Peclet numbers, and to gather data on problems of interest in catalysis. We devised two kinds of NMR experiments for three-phase systems. Both experiments employ two NMR visible phases and one phase that gives no NMR signal. The earlier method depends on the two visible phases differing in a NMR relaxation property. The second method (Beyea, Altobelli, et al., 2003) uses two different nuclei, protons and 19F. It also uses two different types of NMR image formation, a conventional spin-echo and a single-point method. The single-point method is notable for being useful for imaging materials which are much more rigid than can usually be studied by NMR imaging. We use it to image ďlow densityĒ polyethylene (LDPE) plastic in this application. We have reduced the imaging time for this three-phase imaging method to less than 10 s per pair of profiles by using new hardware. Directly measuring the solid LDPE signal was a novel feature for multi-phase flow studies. We also used thermally polarized gas NMR (as opposed to hyper-polarized gas) which produces low signal to noise ratios because gas densities are on the order of 1000 times smaller than liquid densities. However since we used multi-atom molecules that have short T1's and operated at elevated pressures we could overcome some of the losses. Thermally polarized gases have advantages over hyperpolarized gases in the ease of preparation, and in maintaining a well-defined polarization. In these studies (Codd and Altobelli, 2003), we used stimulated echo sequences to successfully obtain propagators of gas in bead packs out to observation times of 300 ms. Zarraga, et al. (2000) used laser-sheet profilometry to investigate normal stress differences in concentrated suspensions. Recently we developed an NMR imaging analog for comparison with numerical work that is being performed by Rekha Rao at Sandia National Laboratories (Rao, Mondy, Sun, et al, 2002). A neutrally buoyant suspension of 100 mm PMMA spheres in a Newtonian liquid was sheared in a vertical Couette apparatus inside the magnet. The outer cylinder rotates and the inner cylinder is fixed. At these low rotation rates, the free-surface of the Newtonian liquid shows no measurable deformation, but the suspension clearly shows its non-Newtonian character.

    5. Figure S1.Technical diagram of the 1-by-3 tandem differential mobility analyzer (cf. schematic diagram shown in Figure 1). Relative humidity sensors are located at positions RH,

      E-Print Network [OSTI]

      valve used for on-off flow control; MFC, mass flow controller; T, temperature sensor; CA, filtered Diffusion Dryer Pinch Valve Pressure Regulator 3 3 3 Aerosol Out Humidity Conditioner Flow Sheath air out=48% RH0=43% Mobility diameter (nm) Particleconcentration(#cm-3bin-1) Entering DMAmono with RH0 Passing

    6. Waveguide detection of right-angle-scattered light in flow cytometry

      DOE Patents [OSTI]

      Mariella, Jr., Raymond P. (Danville, CA)

      2000-01-01

      A transparent flow cell is used as an index-guided optical waveguide. A detector for the flow cell but not the liquid stream detects the Right-Angle-Scattered (RAS) Light exiting from one end of the flow cell. The detector(s) could view the trapped RAS light from the flow cell either directly or through intermediate optical light guides. If the light exits one end of the flow cell, then the other end of the flow cell can be given a high-reflectivity coating to approximately double the amount of light collected. This system is more robust in its alignment than the traditional flow cytometry systems which use imaging optics, such as microscope objectives.

    7. Oak Ridge K-25 Site Technology Logic Diagram. Volume 3, Technology evaluation data sheets; Part A, Characterization, decontamination, dismantlement

      SciTech Connect (OSTI)

      Fellows, R.L. [ed.

      1993-02-26

      The Oak Ridge K-25 Technology Logic Diagram (TLD), a decision support tool for the K-25 Site, was developed to provide a planning document that relates environmental restoration and waste management problems at the Oak Ridge K-25 Site to potential technologies that can remediate these problems. The TLD technique identifies the research necessary to develop these technologies to a state that allows for technology transfer and application to waste management, remedial action, and decontamination and decommissioning activities. The TLD consists of four separate volumes-Vol. 1, Vol. 2, Vol. 3A, and Vol. 3B. Volume 1 provides introductory and overview information about the TLD. Volume 2 contains logic diagrams. Volume 3 has been divided into two separate volumes to facilitate handling and use. This report is part A of Volume 3 concerning characterization, decontamination, and dismantlement.

    8. Relating turbulent pressure and macroturbulence across the HR diagram with a possible link to \\gamma-Dor stars

      E-Print Network [OSTI]

      Grassitelli, Luca; Langer, Norbert; Miglio, Andrea; Istrate, Alina Georgiana; Sanyal, Debashis

      2015-01-01

      A significant fraction of the envelope of low- and intermediate-mass stars is unstable to convection, leading to sub-surface turbulent motion. Here, we consider and include the effects of turbulence pressure in our stellar evolution calculations. In search of an observational signature, we compare the fractional contribution of turbulent pressure to the observed macroturbulent velocities in stars at different evolutionary stages. We find a strong correlation between the two quantities, similar to what was previously found for massive OB stars. We therefore argue that turbulent pressure fluctuations of finite amplitude may excite high-order, high-angular degree stellar oscillations, which manifest themselves at the surface an additional broadening of the spectral lines, i.e., macroturbulence, across most of the HR diagram. When considering the locations in the HR diagram where we expect high-order oscillations to be excited by stochastic turbulent pressure fluctuations, we find a close match with the observati...

    9. Electronic phase diagram of epitaxial La{sub 1?x}Sr{sub x}FeO{sub 3} films

      SciTech Connect (OSTI)

      Xie, Y. J.; Scafetta, M. D.; Moon, E. J.; Krick, A. L.; Sichel-Tissot, R. J.; May, S. J.

      2014-08-11

      The electronic phase diagram of epitaxial La{sub 1?x}Sr{sub x}FeO{sub 3} films is presented. The films were grown on SrTiO{sub 3} using molecular beam epitaxy with post-growth annealing to minimize oxygen vacancies. Insulating behavior is observed from x?=?0Ė0.9, with metallic conduction only present for x?=?1.0. While the La-rich compounds exhibit polaron conduction over all temperatures measured, the Sr-rich films exhibit an electronic phase transition within the compositional window of x?=?0.49Ė0.9 as revealed by temperature-dependent resistivity measurements. The transition temperatures are found to decrease with increasing Sr content. The constructed phase diagram is discussed in the context of other 3d e{sub g} perovskite systems including manganites and cobaltites.

    10. Finding cool subdwarfs using a V-J reduced proper-motion diagram: Stellar parameters for 91 candidates

      E-Print Network [OSTI]

      David Yong; David L. Lambert

      2003-06-03

      We present the results of a search for cool subdwarfs for which our candidates were drawn from a V-J reduced proper-motion diagram constructed by Salim & Gould (2002). Kinematic (U, V, and W) and self-consistent stellar parameters (Teff, log g, [Fe/H], and V_t) are derived for 91 candidate subdwarfs based on high resolution spectra. The observed stars span 3900K < Teff < 6200K and -2.63 < [Fe/H] < 0.25 including only 3 giants (log g < 4.0). Of the sample, 77 stars have MgH lines present in their spectra. With more than 56% of our candidate subdwarfs having [Fe/H] < -1.5, we show that the V-J reduced proper-motion diagram readily identifies metal-poor stars.

    11. Probabilistic Web Image Gathering

      E-Print Network [OSTI]

      Yanai, Keiji

      1 Probabilistic Web Image Gathering 1. Objective & background 2. Related work 3. Method 4, JAPAN (UEC) (Long-term) Objective of our Web Image Gathering Gather several hundreds of images associated with one concept from the Web without human intervention It's not image search. Non

    12. Flow pattern, void fraction and pressure drop of two-phase air-water flow in a horizontal circular micro-channel

      SciTech Connect (OSTI)

      Saisorn, Sira [Energy Division, The Joint Graduate School of Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140 (Thailand); Wongwises, Somchai [Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Laboratory (FUTURE), Department of Mechanical Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140 (Thailand)

      2008-01-15

      Adiabatic two-phase air-water flow characteristics, including the two-phase flow pattern as well as the void fraction and two-phase frictional pressure drop, in a circular micro-channel are experimentally studied. A fused silica channel, 320 mm long, with an inside diameter of 0.53 mm is used as the test section. The test runs are done at superficial velocity of gas and liquid ranging between 0.37-16 and 0.005-3.04 m/s, respectively. The flow pattern map is developed from the observed flow patterns i.e. slug flow, throat-annular flow, churn flow and annular-rivulet flow. The flow pattern map is compared with those of other researchers obtained from different working fluids. The present single-phase experiments also show that there are no significant differences in the data from the use of air or nitrogen gas, and water or de-ionized water. The void fraction data obtained by image analysis tends to correspond with the homogeneous flow model. The two-phase pressure drops are also used to calculate the frictional multiplier. The multiplier data show a dependence on flow pattern as well as mass flux. A new correlation of two-phase frictional multiplier is also proposed for practical application. (author)

    13. Phase diagram and superconductive properties of splat-cooled Cu/sub x/La/sub 1-x/

      SciTech Connect (OSTI)

      Favaron, J.; de la Cruz, M.E.; Esquinazi, P.; de la Cruz, F.

      1980-04-01

      The phase diagram of nonequilibrium, splat-cooled Cu/sub x/La/sub 1-x/ is interpreted by means of superconductive-transition and x-ray measurements. At the eutectic composition the material is shown to be in a highly disordered state. Measurements of dc resistance and ac susceptibility show that there are two different critical fields at the disordered concentration although there is a unique critical temperature.

    14. Y-12 Plant Decontamination and Decommissioning Technology Logic Diagram for Building 9201-4. Volume 1: Technology evaluation

      SciTech Connect (OSTI)

      NONE

      1994-09-01

      During World War 11, the Oak Ridge Y-12 Plant was built as part of the Manhattan Project to supply enriched uranium for weapons production. In 1945, Building 9201-4 (Alpha-4) was originally used to house a uranium isotope separation process based on electromagnetic separation technology. With the startup of the Oak Ridge K-25 Site gaseous diffusion plant In 1947, Alpha-4 was placed on standby. In 1953, the uranium enrichment process was removed, and installation of equipment for the Colex process began. The Colex process--which uses a mercury solvent and lithium hydroxide as the lithium feed material-was shut down in 1962 and drained of process materials. Residual Quantities of mercury and lithium hydroxide have remained in the process equipment. Alpha-4 contains more than one-half million ft{sup 2} of floor area; 15,000 tons of process and electrical equipment; and 23,000 tons of insulation, mortar, brick, flooring, handrails, ducts, utilities, burnables, and sludge. Because much of this equipment and construction material is contaminated with elemental mercury, cleanup is necessary. The goal of the Y-12 Plant Decontamination and Decommissioning Technology Logic Diagram for Building 9201-4 is to provide a planning document that relates decontamination and decommissioning and waste management problems at the Alpha-4 building to the technologies that can be used to remediate these problems. The Y-12 Plant Decontamination and Decommissioning Technology Logic Diagram for Building 9201-4 builds on the methodology transferred by the U.S. Air Force to the Environmental Management organization with DOE and draws from previous technology logic diagram-efforts: logic diagrams for Hanford, the K-25 Site, and ORNL.

    15. Seismic Imaging and Monitoring

      SciTech Connect (OSTI)

      Huang, Lianjie

      2012-07-09

      I give an overview of LANL's capability in seismic imaging and monitoring. I present some seismic imaging and monitoring results, including imaging of complex structures, subsalt imaging of Gulf of Mexico, fault/fracture zone imaging for geothermal exploration at the Jemez pueblo, time-lapse imaging of a walkway vertical seismic profiling data for monitoring CO{sub 2} inject at SACROC, and microseismic event locations for monitoring CO{sub 2} injection at Aneth. These examples demonstrate LANL's high-resolution and high-fidelity seismic imaging and monitoring capabilities.

    16. A MODERN INTERPRETATION OF THE BARNEY DIAGRAM FOR ALUMINUM SOLUBILITY IN TANK WASTE

      SciTech Connect (OSTI)

      REYNOLDS JG; REYNOLDS DA

      2009-12-16

      Experimental and modeling studies of aluminum solubility in Hanford tank waste have been developed and refined for many years in efforts to resolve new issues or develop waste treatment flowsheets. The earliest of these studies was conducted by G. Scott Barney, who performed solubility studies in highly concentrated electrolyte solutions to support evaporator campaign flowsheets in the 1970's. The 'Barney Diagram', a term still widely used at Hanford today, suggested gibbsite ({gamma}-Al(OH){sub 3}) was much more soluble in tank waste than in simple sodium hydroxide solutions. These results, which were highly surprising at the time, continue to be applied to new situations where aluminum solubility in tank waste is of interest. Here, we review the history and provide a modern explanation for the large gibbsite solubility observed by Barney, an explanation based on basic research that has been performed and published in the last 30 years. This explanation has both thermodynamic and kinetic aspects. Thermodynamically, saturated salt solutions stabilize soluble aluminate species that are minor components in simple sodium hydroxide solutions. These species are the aluminate dimer and the sodium-aluminate ion-pair. Ion-pairs must be present in the Barney simulants because calculations showed that there was insufficient space between the highly concentrated ions for a water molecule. Thus, most of the ions in the simulants have to be ion-paired. Kinetics likely played a role as well. The simulants were incubated for four to seven days, and more recent data indicate that this was unlikely sufficient time to achieve equilibrium from supersaturation. These results allow us to evaluate applications of the Barney results to current and future tank waste issues or flowsheets.

    17. THE GLOBULAR CLUSTER NGC 6402 (M14). I. A NEW BV COLOR-MAGNITUDE DIAGRAM

      SciTech Connect (OSTI)

      Contreras Pena, C.; Catelan, M.; Grundahl, F.; Stephens, A. W.; Smith, H. A. E-mail: c.contreras@herts.ac.uk

      2013-09-15

      We present BV photometry of the Galactic globular cluster NGC 6402 (M14), based on 65 V frames and 67 B frames, reaching two magnitudes below the turnoff level. This represents, to the best of our knowledge, the deepest color-magnitude diagram (CMD) of NGC 6402 available in the literature. Statistical decontamination of field stars as well as differential reddening corrections are performed in order to derive a precise ridgeline and hence physical parameters of the cluster. We discuss previous attempts at deriving a reddening value for the cluster, and argue in favor of a value E(B - V) = 0.57 {+-} 0.02, which is significantly higher than indicated by either the Burstein and Heiles or Schlegel et al. (corrected according to Bonifacio et al.) interstellar dust maps. Differential reddening across the face of the cluster, which we find to be present at the level of {Delta}E(B - V) Almost-Equal-To 0.17 mag, is taken into account in our analysis. We measure several metallicity indicators based on the position of the red giant branch (RGB) in the cluster CMD. These give a metallicity of [Fe/H] = -1.38 {+-} 0.07 on the Zinn and West scale and [Fe/H] = -1.28 {+-} 0.08 on the new Carretta et al. (UVES) scale. We also provide measurements of other important photometric parameters for this cluster, including the position of the RGB luminosity function ''bump'' and the horizontal branch morphology. We compare the NGC 6402 ridgeline with that of NGC 5904 (M5) derived by Sandquist et al., and find evidence that NGC 6402 and M5 have approximately the same age to within the uncertainties, although the possibility that M14 may be slightly older cannot be ruled out.

    18. Confronting the Hubble Diagram of Gamma-Ray Bursts with Cardassian Cosmology

      E-Print Network [OSTI]

      Herman J. Mosquera Cuesta; Habib Dumet M.; Cristina Furlanetto

      2007-08-10

      We construct the Hubble diagram (HD) of Gamma-Ray Bursts (GRBs) with redshifts reaching up to $z \\sim 6$, by using five luminosity vs. luminosity indicator relations calibrated with the Cardassian cosmology. This model has a major interesting feature: despite of being matter-dominated and flat, it can explain the present accelerate expansion of the universe. This is the first study of this class of models using high redshift GRBs. We have performed a $\\chi$-square statistical analysis of the GRBs calibrated with the Cardassian model, and also combined them with both the current Cosmic Microwave Background and Baryonic Acoustic Oscillation data. Our results show consistency between the current observational data and the model predictions. In particular, the best-fit parameters obtained from the $\\chi^2$-analysis are in agreement with those obtained from the Concordance Cosmology ($\\Lambda$-CDM). We determine the redshift at which the universe would start to follow the Cardassian expansion, i. e., \\zc, and both the redshift at which the universe had started to accelerate, i. e., \\zac, and the age-redshift relation $H_0t_0$. Our results also show that the universe, from the point of view of GRBs, had undergo a transition to acceleration at a redshift $z \\approx 0.2-0.7$, which agrees with the SNIa results. Hence, after confronting the Cardassian scenario with the GRBs HD and proving its consistency with it, we conclude that GRBs should indeed be considered a complementary tool to several other astronomical observations for studies of high accuracy in cosmology.

    19. Supercritical flow in rectangular expansions†

      E-Print Network [OSTI]

      Walsh, Peter.

      1968-01-01

      In recent years the occasions for design of channels to contain supercritical flow has increased considerably. Consequently there has developed a need for a method of predicting the physical characteristics of such flow based on theory...

    20. Radial flow pulse jet mixer

      DOE Patents [OSTI]

      VanOsdol, John G.

      2013-06-25

      The disclosure provides a pulse jet mixing vessel for mixing a plurality of solid particles. The pulse jet mixing vessel is comprised of a sludge basin, a flow surface surrounding the sludge basin, and a downcoming flow annulus between the flow surface and an inner shroud. The pulse jet mixing vessel is additionally comprised of an upper vessel pressurization volume in fluid communication with the downcoming flow annulus, and an inner shroud surge volume separated from the downcoming flow annulus by the inner shroud. When the solid particles are resting on the sludge basin and a fluid such as water is atop the particles and extending into the downcoming flow annulus and the inner shroud surge volume, mixing occurs by pressurization of the upper vessel pressurization volume, generating an inward radial flow over the flow surface and an upwash jet at the center of the sludge basin.

    1. HYDROLYZED WOOD SLURRY FLOW MODELING

      E-Print Network [OSTI]

      Wrathall, Jim

      2012-01-01

      LBL-10090 UC-61 HYDROLYZED WOOD SLURRY FLOW MODELING JimLBL-10090 HYDROLYZED WOOD SLURRY FLOW MODELING Jim Wrathallconversion of hydrolyzed wood slurry to fuel oil, Based on

    2. Image registration method for medical image sequences

      DOE Patents [OSTI]

      Gee, Timothy F.; Goddard, James S.

      2013-03-26

      Image registration of low contrast image sequences is provided. In one aspect, a desired region of an image is automatically segmented and only the desired region is registered. Active contours and adaptive thresholding of intensity or edge information may be used to segment the desired regions. A transform function is defined to register the segmented region, and sub-pixel information may be determined using one or more interpolation methods.

    3. Evaluating GPR polarization effects for imaging fracture channeling and estimating fracture properties

      E-Print Network [OSTI]

      Perll, Chris

      2013-12-31

      . To understand how the polarization of radar waves affects imaging of channelized flow in a horizontal fracture, i) a series of numerical forward models was created with varying fracture aperture, channel orientation, and varying fracture water electrical...

    4. Confocal Image-Based Computational Modeling of Nitric Oxide Transport in a Rat Mesenteric Lymphatic Vessel†

      E-Print Network [OSTI]

      Wilson, John 1988-

      2012-11-15

      physiologic geometries obtained from confocal images of a rat mesenteric lymphatic vessel to determine the characteristics of NO transport in the lymphatic flow regime. Both steady and unsteady analyses were performed. Steady models were simulated...

    5. Perfusion-Based High-Resolution Functional Imaging in the Human Brain at 7 Tesla

      E-Print Network [OSTI]

      Perfusion-Based High-Resolution Functional Imaging in the Human Brain at 7 Tesla Josef Pfeuffer and reperfusion, blood flow deficits in Alzheimer's disease, HIV-cognitive motor complex dementia, and epilepsy (5

    6. Nuclear magnetic resonance imaging and analysis for determination of porous media properties†

      E-Print Network [OSTI]

      Uh, Jinsoo

      2007-04-25

      Advanced nuclear magnetic resonance (NMR) imaging methodologies have been developed to determine porous media properties associated with fluid flow processes. This dissertation presents the development of NMR experimental and analysis methodologies...

    7. Structural power flow measurement

      SciTech Connect (OSTI)

      Falter, K.J.; Keltie, R.F.

      1988-12-01

      Previous investigations of structural power flow through beam-like structures resulted in some unexplained anomalies in the calculated data. In order to develop structural power flow measurement as a viable technique for machine tool design, the causes of these anomalies needed to be found. Once found, techniques for eliminating the errors could be developed. Error sources were found in the experimental apparatus itself as well as in the instrumentation. Although flexural waves are the carriers of power in the experimental apparatus, at some frequencies longitudinal waves were excited which were picked up by the accelerometers and altered power measurements. Errors were found in the phase and gain response of the sensors and amplifiers used for measurement. A transfer function correction technique was employed to compensate for these instrumentation errors.

    8. Smolt Responses to Hydrodynamic Conditions in Forebay Flow Nets of Surface Flow Outlets, 2007

      SciTech Connect (OSTI)

      Johnson, Gary E.; Richmond, Marshall C.; Hedgepeth, J. B.; Ploskey, Gene R.; Anderson, Michael G.; Deng, Zhiqun; Khan, Fenton; Mueller, Robert P.; Rakowski, Cynthia L.; Sather, Nichole K.; Serkowski, John A.; Steinbeck, John R.

      2009-04-01

      This study provides information on juvenile salmonid behaviors at McNary and The Dalles dams that can be used by the USACE, fisheries resource managers, and others to support decisions on long-term measures to enhance fish passage. We researched smolt movements and ambient hydrodynamic conditions using a new approach combining simultaneous acoustic Doppler current profiler (ADCP) and acoustic imaging device (AID) measurements at surface flow outlets (SFO) at McNary and The Dalles dams on the Columbia River during spring and summer 2007. Because swimming effort vectors could be computed from the simultaneous fish and flow data, fish behavior could be categorized as passive, swimming against the flow (positively rheotactic), and swimming with the flow (negatively rheotactic). We present bivariate relationships to provide insight into fish responses to particular hydraulic variables that engineers might consider during SFO design. The data indicate potential for this empirical approach of simultaneous water/fish measurements to lead to SFO design guidelines in the future.

    9. Ricci flow and quantum theory

      E-Print Network [OSTI]

      Robert Carroll

      2007-11-05

      We show some relations between Ricci flow and quantum theory via Fisher information and the quantum potential.

    10. Flow dynamics of the Moon

      E-Print Network [OSTI]

      Yu. N. Bratkov

      2010-04-03

      Flow analysis of big basins is given. Internal structure of flows is considered. Correlations between flows are calculated. For example, Mare Orientale is a moving basin. Orientale and Imbrium continental basins are introduced and are considered. Olbers ray crater is a result of precise interaction of the two basins. Flows of the Tycho type are studied. Two Antarctidae, an Indian Ocean, and an America are demonstrated.

    11. Bioengineering 208: Magnetic Resonance Imaging Laboratory Winter 2007

      E-Print Network [OSTI]

      California at San Diego, University of

      velocity well. b. Acquire a 3D TOF image of the vessel, with the location of the 2D PC image the (volts/amps) scale labeled on the gradient amp test point, and a scaling of 4G/cm at 250A. Turn where all the major vessels going in and out of the head are clear and appear to be flowing straight

    12. Bioengineering 208: Magnetic Resonance Imaging Laboratory Winter 2008

      E-Print Network [OSTI]

      California at San Diego, University of

      velocity well. b. Acquire a 3D TOF image of the vessel, with the location of the 2D PC image the (volts/amps) scale labeled on the gradient amp test point, and a scaling of 4G/cm at 250A. Turn where all the major vessels going in and out of the head are clear and appear to be flowing straight

    13. Convective heat flow probe

      DOE Patents [OSTI]

      Dunn, J.C.; Hardee, H.C.; Striker, R.P.

      1984-01-09

      A convective heat flow probe device is provided which measures heat flow and fluid flow magnitude in the formation surrounding a borehole. The probe comprises an elongate housing adapted to be lowered down into the borehole; a plurality of heaters extending along the probe for heating the formation surrounding the borehole; a plurality of temperature sensors arranged around the periphery of the probe for measuring the temperature of the surrounding formation after heating thereof by the heater elements. The temperature sensors and heater elements are mounted in a plurality of separate heater pads which are supported by the housing and which are adapted to be radially expanded into firm engagement with the walls of the borehole. The heat supplied by the heater elements and the temperatures measured by the temperature sensors are monitored and used in providing the desired measurements. The outer peripheral surfaces of the heater pads are configured as segments of a cylinder and form a full cylinder when taken together. A plurality of temperature sensors are located on each pad so as to extend along the length and across the width thereof, with a heating element being located in each pad beneath the temperature sensors. An expansion mechanism driven by a clamping motor provides expansion and retraction of the heater pads and expandable packet-type seals are provided along the probe above and below the heater pads.

    14. Microgravity Flow Regime Transition Modeling†

      E-Print Network [OSTI]

      Shephard, Adam M.

      2010-07-14

      Flow regime transitions and the modeling thereof underlie the design of microgravity two-phase systems. Through the use of the zero-g laboratory, microgravity two-phase flows can be studied. Because microgravity two-phase flows exhibit essentially...

    15. Modeling shrouded stator cavity flows in axial-flow compressors

      SciTech Connect (OSTI)

      Wellborn, S.R.; Tolchinsky, I.; Okiishi, T.H.

      2000-01-01

      Experiments and computational analyses were completed to understand the nature of shrouded stator cavity flows. From this understanding, a one-dimensional model of the flow through shrouded stator cavities was developed. This model estimates the leakage mass flow, temperature rise, and angular momentum increase through the cavity, given geometry parameters and the flow conditions at the interface between the cavity and primary flow path. This cavity model consists of two components, one that estimates the flow characteristics through the labyrinth seals and the other that predicts the transfer of momentum due to windage. A description of the one-dimensional model is given. The incorporation and use of the one-dimensional model in a multistage compressor primary flow analysis tool is described. The combination of this model and the primary flow solver was used to reliably simulate the significant impact on performance of the increase of hub seal leakage in a twelve-stage axial-flow compressor. Observed higher temperatures of the hub region fluid, different stage matching, and lower overall efficiencies and core flow than expected could be correctly linked to increased hub seal clearance with this new technique. The importance of including these leakage flows in compressor simulations is shown.

    16. Continuous flow system for controlling phases separation near ? transition

      SciTech Connect (OSTI)

      Chorowski, M.; Poli?ski, J. [Wroc?aw University of Technology, Wybrze?e Wyspia?skiego 27,50-560 Wroc?aw (Poland); Kempi?ski, W.; Trybu?a, Z.; ?o?, Sz. [Institute of Molecular Physics, Polish Academy of Sciences, ul. Smoluchowskiego 17,60-179 Pozna? (Poland); Cho?ast, K.; Kociemba, A. [Polish Oil and Gas Company, Odolanow, ul. Krotoszynska 148, 63-430 Odolanow (Poland)

      2014-01-29

      As demands on 3He are increasing and conventional 3He production through tritium decay is decreasing, alternative 3He production methods are becoming economically viable. One such possibility is to use entropy filters for extraction of the 3He isotope from natural gas. According to the phase diagram of the 3He, its solidification is impossible by only lowering of the temperature. Hence during the cooling process at stable pressure we can reach ?-point and pass to the special phase - He II. The total density of HeII is a sum of the two phases: normal the superfluid ones. It is possible to separate these two phases with an entropy filter - the barrier for the classically-behaving normal phase. This barrier can also be used to separate the two main isotopes of He: 4He and 3He, because at temperatures close to the 4He-?-point the 3He isotope is part of the normal phase. The paper presents continuous flow schemes of different separation methods of 3He from helium commodity coming from natural gas cryogenic processing. An overall thermodynamic efficiency of the 3He/4He separation process is presented. A simplified model of continuous flow HeI -HeII recuperative heat exchanger is given. Ceramic and carbon porous plugs have been tested in entropy filter applications.

    17. Pallet insertion glovebox/hood control ladder diagram. Final project report

      SciTech Connect (OSTI)

      Issaian, V.

      1995-12-01

      The pallet insertion glovebox/hood (G/H) is a special confinement space that will be designed to allow for insertion of pallets into the Stacker/Retriever (S/R) area. The S/R a large vault that is kept at negative 1 inches w.c. relative to the atmosphere and is used for the safe storage of special nuclear material. The S/R system uses a vehicle to move the special nuclear material that are placed on the pallets from the storage bins to input/output (I/O) stations and vice versa. As the name suggest the I/O stations are used to place the material into the S/R vault or to remove material from the S/R vault. The pallets are specially designed structures that will hold certain numbers of the material containers in a safe configuration. To store additional material containers, there is a need to insert additional pallets in the SIR vault. Due to the presence of radioactive contamination and the fact that the vault must be kept at a negative pressure at all times, one of the several I/O stations will be modified so that pallets could be inserted into the S/R vault. The ventilation system for the S/R area is a dedicated system that recirculates nitrogen with less than 5% oxygen by volume throughout the area while exhausting small option of the nitrogen to keep the S/R at negative 1 inches w.c. relative to the atmosphere. The rooms surrounding the G/H and the S/R area are maintained at negative of 0.3 inches w.c. relative to the outside atmosphere. Both the G/H and the control system for the G/H will be designed such that the confinement requirements of the S/R and the G/H system will not be jeopardized. A ladder diagram will be developed to illustrate the control system.

    18. Interesting features in the combined Galex and Sloan color diagrams of solar-like galactic populations

      SciTech Connect (OSTI)

      Smith, Myron A.; Shiao, Bernard; Bianchi, Luciana E-mail: shiao@stsci.edu

      2014-06-01

      We report on intriguing photometric properties of Galactic stars observed in the Galaxy Evolution Explorer (GALEX) satellite's far-UV (FUV) and near-UV (NUV) bandpasses, as well as from the ground-based Sloan Digital Sky Survey (SDSS) and the Kepler Input Catalog. The first property is that the (FUV Ė NUV) color distribution of stars in the Kepler field consists of two well-separated peaks. A second and more perplexing property is that for stars with spectral types G or later the mean (FUV Ė NUV) color becomes much bluer, contrary to expectation. Investigating this tendency further, we found in two samples of mid-F through K type stars that 17%-22% of them exhibit FUV excesses relative to their NUV fluxes and spectral types. A correction for FUV incompleteness of the FUV magnitude-limited star sample brings this ratio to 14%-18%. Nearly the same fractions are also discovered among members of the Kepler Eclipsing Binary Catalog and in the published list of Kepler Objects of Interest. These UV-excess ('UVe') colors are confirmed by the negative UV continuum slopes in GALEX spectra of members of the population. The SDSS spectra of some UVe stars exhibit metallic line weakening, especially in the blue. This suggests an enhanced contribution of UV flux relative to photospheric flux of a solar-type single star. We consider the possibility that the UV excesses originate from various types of hot stars, including white dwarf DA and sdB stars, binaries, and strong chromosphere stars that are young or in active binaries. The space density of compact stars is too low to explain the observed frequency of the UVe stars. Our model atmosphere-derived simulations of colors for binaries with main-sequence pairs with a hot secondary demonstrate that the color loci conflict with the observed sequence. As a preferred alternative we are left with the active chromospheres explanation, whether in active close binaries or young single stars, despite the expected paucity of young, chromospherically active stars in the field. We also address a third perplexing color property, namely, the presence of a prominent island of 'UV red' stars surrounded by 'UV blue' stars in the diagnostic (NUVĖg), (g Ė i) color diagram. We find that the subpopulation composing this island is mainly horizontal branch stars. These objects do not exhibit UV excesses and therefore have UV colors typical for their spectral types. This subpopulation appears 'red' in the UV only because the stars' colors are not pulled to the blue by the inclusion of UVe stars.

    19. Dependence of fluid flows in an evaporating sessile droplet on the characteristics of the substrate

      E-Print Network [OSTI]

      Barash, L Yu

      2014-01-01

      Temperature distributions and the corresponding vortex structures in an evaporating sessile droplet are obtained by performing detailed numerical calculations. A Marangoni convection induced by thermal conduction processes in the drop and the substrate is demonstrated to be able to result not only in a single vortex, but also in two or three vortices, depending on the ratio of substrate to fluid thermal conductivities, on the substrate thickness and the contact angle. The "phase diagrams" containing information on the number, orientation and spatial location of the vortices for quasistationary fluid flows are presented and analysed. The results obtained demonstrate that the fluid flow structure in evaporating droplets can be influenced in a controlled manner by selecting substrates with appropriate properties.

    20. Hubble diagrams of soft and hard radiation sources in the graviton background: to an apparent contradiction between supernova 1a and gamma-ray burst observations

      E-Print Network [OSTI]

      Michael A. Ivanov

      2007-01-10

      In the sea of super-strong interacting gravitons, non-forehead collisions with gravitons deflect photons, and this deflection may differ for soft and hard radiations. As a result, the Hubble diagram would not be a universal function and it will have a different view for such sources as supernovae in visible light and gamma-ray bursts. Observations of these two kinds are compared here with the limit cases of the Hubble diagram.

    1. Mean field phase diagram of an SU(2){sub {ital L}}{times}SU(2){sub {ital R}} lattice Higgs-Yukawa model at finite {lambda}

      SciTech Connect (OSTI)

      Pryor, C. [Sierra Center for Physics, 939 North Van Ness Avenue, Suite 2, Fresno, California 93728 (United States)] [Sierra Center for Physics, 939 North Van Ness Avenue, Suite 2, Fresno, California 93728 (United States)

      1996-02-01

      The phase diagram of an SU(2){sub {ital L}}{times}SU(2){sub {ital R}} lattice Higgs-Yukawa model with finite {lambda} is constructed using mean field theory. The phase diagram bears a superficial resemblance to that for {lambda}={infinity}; however, as {lambda} is decreased the paramagnetic region shrinks in size. For small {lambda} the phase transitions remain second order, and no new first order transitions are seen. {copyright} {ital 1996 The American Physical Society.}

    2. Computerized tomographic analysis of fluid flow in fractured tuff

      SciTech Connect (OSTI)

      Felice, C.W.; Sharer, J.C.; Springer, E.P.

      1992-05-01

      The purpose of this summary is to demonstrate the usefulness of X-ray computerized tomography to observe fluid flow down a fracture and rock matrix imbibition in a sample of Bandelier tuff. This was accomplished by using a tuff sample 152.4 mm long and 50.8 mm in diameter. A longitudinal fracture was created by cutting the core with a wire saw. The fractured piece was then coupled to its adjacent section to that the fracture was not expected. Water was injected into a dry sample at five flow rates and CT scanning performed at set intervals during the flow. Cross sectional images and longitudinal reconstructions were built and saturation profiles calculated for the sample at each time interval at each flow rate. The results showed that for the test conditions, the fracture was not a primary pathway of fluid flow down the sample. At a slow fluid injection rate into the dry sample, the fluid was imbibed into the rock uniformly down the length of the core. With increasing injection rates, the flow remained uniform over the core cross section through complete saturation.

    3. Computerized tomographic analysis of fluid flow in fractured tuff

      SciTech Connect (OSTI)

      Felice, C.W.; Sharer, J.C. ); Springer, E.P. )

      1992-01-01

      The purpose of this summary is to demonstrate the usefulness of X-ray computerized tomography to observe fluid flow down a fracture and rock matrix imbibition in a sample of Bandelier tuff. This was accomplished by using a tuff sample 152.4 mm long and 50.8 mm in diameter. A longitudinal fracture was created by cutting the core with a wire saw. The fractured piece was then coupled to its adjacent section to that the fracture was not expected. Water was injected into a dry sample at five flow rates and CT scanning performed at set intervals during the flow. Cross sectional images and longitudinal reconstructions were built and saturation profiles calculated for the sample at each time interval at each flow rate. The results showed that for the test conditions, the fracture was not a primary pathway of fluid flow down the sample. At a slow fluid injection rate into the dry sample, the fluid was imbibed into the rock uniformly down the length of the core. With increasing injection rates, the flow remained uniform over the core cross section through complete saturation.

    4. ANTI-PARALLEL EUV FLOWS OBSERVED ALONG ACTIVE REGION FILAMENT THREADS WITH HI-C

      SciTech Connect (OSTI)

      Alexander, Caroline E.; Walsh, Robert W.; Rťgnier, Stťphane; Cirtain, Jonathan; Winebarger, Amy R.; Golub, Leon; Korreck, Kelly; Weber, Mark; Kobayashi, Ken; Platt, Simon; Mitchell, Nick; DePontieu, Bart; Title, Alan; DeForest, Craig; Kuzin, Sergey

      2013-09-20

      Plasma flows within prominences/filaments have been observed for many years and hold valuable clues concerning the mass and energy balance within these structures. Previous observations of these flows primarily come from H? and cool extreme-ultraviolet (EUV) lines (e.g., 304 Ň) where estimates of the size of the prominence threads has been limited by the resolution of the available instrumentation. Evidence of 'counter-steaming' flows has previously been inferred from these cool plasma observations, but now, for the first time, these flows have been directly imaged along fundamental filament threads within the million degree corona (at 193 Ň). In this work, we present observations of an AR filament observed with the High-resolution Coronal Imager (Hi-C) that exhibits anti-parallel flows along adjacent filament threads. Complementary data from the Solar Dynamics Observatory (SDO)/Atmospheric Imaging Assembly (AIA) and Helioseismic and Magnetic Imager are presented. The ultra-high spatial and temporal resolution of Hi-C allow the anti-parallel flow velocities to be measured (70-80 km s{sup Ė1}) and gives an indication of the resolvable thickness of the individual strands (0.''8 Ī 0.''1). The temperature of the plasma flows was estimated to be log T (K) = 5.45 Ī 0.10 using Emission Measure loci analysis. We find that SDO/AIA cannot clearly observe these anti-parallel flows or measure their velocity or thread width due to its larger pixel size. We suggest that anti-parallel/counter-streaming flows are likely commonplace within all filaments and are currently not observed in EUV due to current instrument spatial resolution.

    5. Practical image based lighting†

      E-Print Network [OSTI]

      Lee, Jaemin

      2003-01-01

      information is lighting. Image based lighting that is developed to recover illumination information of the real world from photographs has recently been popular in computer graphics. In this thesis we present a practical image based lighting method. Our...

    6. Computational ghost imaging

      E-Print Network [OSTI]

      Shapiro, Jeffrey H.

      A computational ghost-imaging arrangement that uses only a single-pixel detector is described. It affords a new 3D sectioning capability and matches the resolution of pseudothermal ghost imaging.

    7. Electric current density imaging via an accelerated iterative algorithm with joint sparsity constraints

      E-Print Network [OSTI]

      Bretti, Gabriella

      current flow. Similarly, in nondestructive testing cracks and corrosion damage in a structure resultElectric current density imaging via an accelerated iterative algorithm with joint sparsity sciences require to map the spatial distribution of electric currents flowing through a given sample

    8. Flow Battery Technology

      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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation Current HABFES OctoberEvanServices ¬ĽFirst ObservationFast(ER1)Flow Battery

    9. User Science Images

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

      Research | URL: https:www.fin.ucar.edunetpubserver.np?find&siteimagelibrary&catalogcatalog&templatedetail.np&fielditemid&opmatches&value3438 Download Image:...

    10. Analyzing and improving image quality in reflective ghost imaging

      E-Print Network [OSTI]

      Hardy, Nicholas D. (Nicholas David)

      2011-01-01

      Ghost imaging is a transverse imaging technique that relies on the correlation between a pair of light fields, one that has interacted with the object to be imaged and one that has not. Most ghost imaging experiments have ...

    11. Human Functional Brain Imaging

      E-Print Network [OSTI]

      Rambaut, Andrew

      Human Functional Brain Imaging 1990≠2009 September 2011 Portfolio Review #12;2 | Portfolio Review: Human Functional Brain ImagingThe Wellcome Trust is a charity registered in England and Wales, no's role in supporting human functional brain imaging and have informed `our' speculations for the future

    12. Human Functional Brain Imaging

      E-Print Network [OSTI]

      Rambaut, Andrew

      Human Functional Brain Imaging 1990≠2009 September 2011 Portfolio Review Summary Brain Imaging #12 Dale ≠ one of our first Trustees. Understanding the brain remains one of our key strategic aims today three-fold: ∑ to identify the key landmarks and influences on the human functional brain imaging

    13. Image Sensor Application

      E-Print Network [OSTI]

      Stanford University

      ; #12; #12; Image Sensor Lens Metadata Actions Flash ... Application Processor Con gure 1 and Statistics #12; Image Sensor Lens Metadata Actions Flash ... Application Processor Con gure 1 Expose 2 and Statistics #12; Image Sensor Lens Metadata Actions Flash ... Application Processor Con gure 1 Expose 2

    14. Medical imaging systems

      DOE Patents [OSTI]

      Frangioni, John V

      2013-06-25

      A medical imaging system provides simultaneous rendering of visible light and diagnostic or functional images. The system may be portable, and may include adapters for connecting various light sources and cameras in open surgical environments or laparascopic or endoscopic environments. A user interface provides control over the functionality of the integrated imaging system. In one embodiment, the system provides a tool for surgical pathology.

    15. Near-electrode imager

      DOE Patents [OSTI]

      Rathke, Jerome W. (Lockport, IL); Klingler, Robert J. (Westmont, IL); Woelk, Klaus (Wachtberg, DE); Gerald, II, Rex E. (Brookfield, IL)

      2000-01-01

      An apparatus, near-electrode imager, for employing nuclear magnetic resonance imaging to provide in situ measurements of electrochemical properties of a sample as a function of distance from a working electrode. The near-electrode imager uses the radio frequency field gradient within a cylindrical toroid cavity resonator to provide high-resolution nuclear magnetic resonance spectral information on electrolyte materials.

    16. Spatial and temporal resolution of fluid flows: LDRD final report

      SciTech Connect (OSTI)

      Tieszen, S.R.; O`Hern, T.J.; Schefer, R.W.; Perea, L.D.

      1998-02-01

      This report describes a Laboratory Directed Research and Development (LDRD) activity to develop a diagnostic technique for simultaneous temporal and spatial resolution of fluid flows. The goal is to obtain two orders of magnitude resolution in two spatial dimensions and time simultaneously. The approach used in this study is to scale up Particle Image Velocimetry (PIV) and Planar Laser Induced Fluorescence (PLIF) to acquire meter-size images at up to 200 frames/sec. Experiments were conducted in buoyant, fully turbulent, non-reacting and reacting plumes with a base diameter of one meter. The PIV results were successful in the ambient gas for all flows, and in the plume for non-reacting helium and reacting methane, but not reacting hydrogen. No PIV was obtained in the hot combustion product region as the seed particles chosen vaporized. Weak signals prevented PLIF in the helium. However, in reacting methane flows, PLIF images speculated to be from Poly-Aromatic-Hydrocarbons were obtained which mark the flame sheets. The results were unexpected and very insightful. A natural fluorescence from the seed particle vapor was also noted in the hydrogen tests.

    17. Study of flow fields induced by surface dielectric barrier discharge actuator in low-pressure air

      SciTech Connect (OSTI)

      Che, Xueke E-mail: st@mail.iee.ac.cn; Nie, Wansheng; Tian, Xihui; Hou, Zhiyong; He, Haobo; Zhou, Penghui; Zhou, Siyin; Yang, Chao; Shao, Tao E-mail: st@mail.iee.ac.cn

      2014-04-15

      Surface dielectric barrier discharge (SDBD) is a promising method for a flow control. Flow fields induced by a SDBD actuator driven by the ac voltage in static air at low pressures varying from 1.0 to 27.7?kPa are measured by the particle image velocimetry method. The influence of the applied ac voltage frequency and magnitude on the induced flow fields is studied. The results show that three different classes of flow fields (wall jet flow field, complex flow field, and vortex-shape flow field) can be induced by the SDBD actuator in the low-pressure air. Among them, the wall jet flow field is the same as the tangential jet at atmospheric pressure, which is, together with the vertical jet, the complex flow field. The vortex-shape flow field is composed of one vertical jet which points towards the wall and two opposite tangential jets. The complex and the vortex-shape flow fields can be transformed to the wall jet flow field when the applied ac voltage frequency and magnitude are changed. It is found that the discharge power consumption increases initially, decreases, and then increases again at the same applied ac voltage magnitude when the air pressure decreases. The tangential velocity of the wall jet flow field increases when the air pressure decreases. It is however opposite for the complex flow field. The variation of the applied ac voltage frequency influences differently three different flow fields. When the applied ac voltage magnitude increases at the same applied ac voltage frequency, the maximal jet velocity increases, while the power efficiency increases only initially and then decreases again. The discharge power shows either linear or exponential dependences on the applied ac voltage magnitude.

    18. Spiral Laminar Flow: A revolution in understanding?

      E-Print Network [OSTI]

      Greenaway, Alan

      Blood Flow Spiral laminar flow #12;Spiral flow in the Aorta (MRI) Computational Fluid Dynamics 0 10 20Spiral Laminar Flow: A revolution in understanding? Reintroduction of natural blood flow Laminar Flow through Runoff (3months) Proximal Anastomosis SLF TM Graft Distal Anastomosis Post-op Angios

    19. Radial flow heat exchanger

      DOE Patents [OSTI]

      Valenzuela, Javier (Hanover, NH)

      2001-01-01

      A radial flow heat exchanger (20) having a plurality of first passages (24) for transporting a first fluid (25) and a plurality of second passages (26) for transporting a second fluid (27). The first and second passages are arranged in stacked, alternating relationship, are separated from one another by relatively thin plates (30) and (32), and surround a central axis (22). The thickness of the first and second passages are selected so that the first and second fluids, respectively, are transported with laminar flow through the passages. To enhance thermal energy transfer between first and second passages, the latter are arranged so each first passage is in thermal communication with an associated second passage along substantially its entire length, and vice versa with respect to the second passages. The heat exchangers may be stacked to achieve a modular heat exchange assembly (300). Certain heat exchangers in the assembly may be designed slightly differently than other heat exchangers to address changes in fluid properties during transport through the heat exchanger, so as to enhance overall thermal effectiveness of the assembly.

    20. Fluid flow monitoring device

      DOE Patents [OSTI]

      McKay, M.D.; Sweeney, C.E.; Spangler, B.S. Jr.

      1993-11-30

      A flow meter and temperature measuring device are described comprising a tube with a body centered therein for restricting flow and a sleeve at the upper end of the tube to carry several channels formed longitudinally in the sleeve to the appropriate axial location where they penetrate the tube to allow pressure measurements and temperature measurements with thermocouples. The high pressure measurement is made using a channel penetrating the tube away from the body and the low pressure measurement is made at a location at the widest part of the body. An end plug seals the end of the device and holes at its upper end allow fluid to pass from the interior of the tube into a plenum. The channels are made by cutting grooves in the sleeve, the grooves widened at the surface of the sleeve and then a strip of sleeve material is welded to the grooves closing the channels. Preferably the sleeve is packed with powdered graphite before cutting the grooves and welding the strips. 7 figures.

    1. Fluid flow monitoring device

      DOE Patents [OSTI]

      McKay, Mark D. (1426 Socastee Dr., North Augusta, SC 29841); Sweeney, Chad E. (3600 Westhampton Dr., Martinez, GA 30907-3036); Spangler, Jr., B. Samuel (2715 Margate Dr., Augusta, GA 30909)

      1993-01-01

      A flow meter and temperature measuring device comprising a tube with a body centered therein for restricting flow and a sleeve at the upper end of the tube to carry several channels formed longitudinally in the sleeve to the appropriate axial location where they penetrate the tube to allow pressure measurements and temperature measurements with thermocouples. The high pressure measurement is made using a channel penetrating the tube away from the body and the low pressure measurement is made at a location at the widest part of the body. An end plug seals the end of the device and holes at its upper end allow fluid to pass from the interior of the tube into a plenum. The channels are made by cutting grooves in the sleeve, the grooves widened at the surface of the sleeve and then a strip of sleeve material is welded to the grooves closing the channels. Preferably the sleeve is packed with powdered graphite before cutting the grooves and welding the strips.

    2. Using NMR to Validate First-Principles Granular Flow Equations

      E-Print Network [OSTI]

      D. Candela; C. Huan; K. Facto; R. Wang; R. W. Mair; R. L. Walsworth

      2005-10-23

      Nuclear magnetic resonance (NMR) experiments are described for two granular-flow systems, the vibrofluidized bed and the gas-fluidized bed. Using pulsed field gradient, magnetic resonance imaging, and hyperpolarized gas NMR, detailed information is obtained for the density and motions of both grains and interstitial gas. For the vibrofluidized bed, the granular temperature profile is measured and compared with a first-principles formulation of granular hydrodynamics. For the gas-fluidized bed, dynamic correlations in the grain density are used to measure the bubble velocity and hyperpolarized xenon gas NMR is used to measure the bubble-emulsion exchange rate. A goal of these measurements is to verify in earth gravity first-principles theories of granular flows, which then can be used to make concrete predictions for granular flows in reduced gravity.

    3. Quantitative Determination of the Hubbard Model Phase Diagram from Optical Lattice Experiments by Two-Parameter Scaling

      SciTech Connect (OSTI)

      Campo, V. L. Jr.; Capelle, K.; Quintanilla, J.; Hooley, C.

      2007-12-14

      We propose an experiment to obtain the phase diagram of the fermionic Hubbard model, for any dimensionality, using cold atoms in optical lattices. It is based on measuring the total energy for a sequence of trap profiles. It combines finite-size scaling with an additional 'finite-curvature scaling' necessary to reach the homogeneous limit. We illustrate its viability in the 1D case, simulating experimental data in the Bethe-ansatz local-density approximation. Including experimental errors, the filling corresponding to the Mott transition can be determined with better than 3% accuracy.

    4. Enhanced Software for Displaying Orthographic, Stereographic, Gnomic and Cylindrical Projections of the Sunpath Diagram and Shading Mask Protractor†

      E-Print Network [OSTI]

      Oh, K. W.; Haberl, J. S.; Degelman, L. O.

      2000-01-01

      -path diagram and shading mask protractor are well known graphic formats that have traditionally been used by architects and engineers to analyze whether or not a solar shading device will block direct sunlight on a given point in the plane of an exterior... (Schnieders et al. 1997), AWNSHADE (McCluney 1995), SOLAR-2 (Sheu 1986), SUNPATH (McCluney 1995), and SUNSPEC (McCluney 1995) programs. OPAQUE (Abouella and Milne 1990), developed by the Department of Architecture at UCLA, draws a detailed wall or roof...

    5. Automation in image cytometry : continuous HCS and kinetic image cytometry

      E-Print Network [OSTI]

      Charlot, David J.

      2012-01-01

      OF CALIFORNIA, SAN DIEGO Automation in Image Cytometry:xiv Abstract of Dissertation Automation in Image Cytometry:

    6. CLEAN CAST STEEL TECHNOLOGY: DETERMINATION OF TRANSFORMATION DIAGRAMS FOR DUPLEX STAINLESS STEEL.

      SciTech Connect (OSTI)

      Chumbley. L., S.

      2005-09-18

      Duplex stainless steels (DSS) constitute both ferrite and austenite as a matrix. Such a microstructure confers a high corrosion resistance with favorable mechanical properties. However, intermetallic phases such as sigma (√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Į√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ā√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬≥) and chi (√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Į√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ā√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬£) can also form during casting or high-temperature processing and can degrade the properties of the DSS. This research was initiated to develop time-temperature-transformation (TTT) and continuous-cooling- transformation (CCT) diagrams of two types of cast duplex stainless steels, CD3MN (Fe 22Cr-5Ni-Mo-N) and CD3MWCuN (Fe-25Cr-7Ni-Mo-W-Cu-N), in order to understand the time and temperature ranges for intermetallic phase formation. The alloys were heat treated isothermally or under controlled cooling conditions and then characterized using conventional metallographic methods that included tint etching, and also using electron microscopy (SEM, TEM) and wavelength dispersive spectroscopy (WDS). The kinetics of intermetallic-phase (√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Į√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ā√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬≥ + √?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Į√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ā√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬£) formation were analyzed using the Johnson-Mehl-Avrami (JMA) equation in the case of isothermal transformations and a modified form of this equation in the case of continuous cooling transformations, The rate of intermetallic-phase formation was found to be much faster in CD3MWCuN than CD3MN due mainly to differences in the major alloying contents such as Cr, Ni and Mo. To examine in more detail the effects of these elements of the phase stabilities, a series of eight steel castings was designed with the Cr, Ni and Mo contents systematically varied with respect to the nominal composition of CD3MN. The effects of varying the contents of alloying additions on the formation of intermetallic phases were also studied computationally using the commercial thermodynamic software package, Thermo-Calc. In general, √?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Į√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ā√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬≥ was stabilized with increasing Cr addition and by increasing Mo addition. However, a delicate balance among Ni and other minor elements such as N and Si also exists. Phase equilibria in DSS can be affected by local composition fluctuations in the cast alloy. This may cause discrepancy between thermodynamic prediction and experimental observation.

    7. Cloud tracking with optical flow for short-term solar forecasting Philip Wood-Bradley, Jos Zapata, John Pye

      E-Print Network [OSTI]

      Cloud tracking with optical flow for short-term solar forecasting Philip Wood-Bradley, Josť Zapata: John Pye ≠ john.pye@anu.edu.au 1. Abstract A method for tracking and predicting cloud movement using a user defined region in the image or the Sun. The clouds were first identified by segmenting the image

    8. 3D Harmonic Mapping and Tetrahedral Meshing of Brain Imaging Data

      E-Print Network [OSTI]

      Thompson, Paul

      3D Harmonic Mapping and Tetrahedral Meshing of Brain Imaging Data Yalin Wang1 , Xianfeng Gu2 , Paul algorithm finds a harmonic map from a 3-manifold to a 3D solid sphere and the second is a novel sphere of magnetic resonance images (MRI). A heat flow method is used to solve the volumetric harmonic mapping

    9. Level Set based Reconstruction Algorithm for EIT Lung Images: First Clinical Results

      E-Print Network [OSTI]

      Adler, Andy

      Level Set based Reconstruction Algorithm for EIT Lung Images: First Clinical Results Peyman Rahmati of a slow flow inflation pressure-volume manoeuvre in lung healthy and adult lung injury patients. Images conductivity changes in the distribution of lung ventilation using the level set based reconstruction method. 1

    10. Volumetric imaging of shark tail hydrodynamics reveals a three-dimensional

      E-Print Network [OSTI]

      Lauder, George V.

      Volumetric imaging of shark tail hydrodynamics reveals a three-dimensional dual-ring vortex wake-dimensional, volumetric imaging technique that allows instantaneous capture of wake flow patterns, to a classic problem analyses, and show that the volumetric approach reveals a different vortex wake not previously

    11. Substorm triggering by new plasma intrusion: THEMIS allsky imager observations

      E-Print Network [OSTI]

      Mende, Stephen B.

      Click Here for Full Article Substorm triggering by new plasma intrusion: THEMIS allsky imager) and followed by a northsouth (NS) arc moving equatorward toward the onset latitude. Because of the linkage by enhanced earthward plasma flows associated with enhanced reconnection near the preexisting openclosed field

    12. Original Research In Vivo Magnetic Resonance Imaging of the Human

      E-Print Network [OSTI]

      Gorassini, Monica

      Original Research In Vivo Magnetic Resonance Imaging of the Human Cervical Spinal Cord at 3 Tesla is feasible at 3 T. Key Words: MRI; 3 Tesla; cervical spinal cord; gradient echo; gray matter; white matter J, and pulsatile flow (9,10). Deficits in motor and sensory function from damage to the spinal cord are mainly due

    13. Fourier plane imaging microscopy

      SciTech Connect (OSTI)

      Dominguez, Daniel, E-mail: daniel.dominguez@ttu.edu; Peralta, Luis Grave de [Department of Physics, Texas Tech University, Lubbock, Texas 79409 (United States); Nano Tech Center, Texas Tech University, Lubbock, Texas 79409 (United States); Alharbi, Nouf; Alhusain, Mdhaoui [Department of Physics, Texas Tech University, Lubbock, Texas 79409 (United States); Bernussi, Ayrton A. [Nano Tech Center, Texas Tech University, Lubbock, Texas 79409 (United States); Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, Texas 79409 (United States)

      2014-09-14

      We show how the image of an unresolved photonic crystal can be reconstructed using a single Fourier plane (FP) image obtained with a second camera that was added to a traditional compound microscope. We discuss how Fourier plane imaging microscopy is an application of a remarkable property of the obtained FP images: they contain more information about the photonic crystals than the images recorded by the camera commonly placed at the real plane of the microscope. We argue that the experimental results support the hypothesis that surface waves, contributing to enhanced resolution abilities, were optically excited in the studied photonic crystals.

    14. Development of neutron tomography and phase contrast imaging technique

      SciTech Connect (OSTI)

      Kashyap, Y. S.; Agrawal, Ashish; Sarkar, P. S.; Shukla, Mayank; Sinha, Amar

      2013-02-05

      This paper presents design and development of a state of art neutron imaging technique at CIRUS reactor with special reference for techniques adopted for tomography and phase contrast imaging applications. Different components of the beamline such as collimator, shielding, sample manipulator, digital imaging system were designed keeping in mind the requirements of data acquisition time and resolution. The collimator was designed in such a way that conventional and phase contrast imaging can be done using same collimator housing. We have done characterization of fuel pins, study of hydride blisters in pressure tubes hydrogen based cells, two phase flow visualization, and online study of locomotive parts etc. using neutron tomography and radiography technique. We have also done some studies using neutron phase contrast imaging technique on this beamline.

    15. Active combustion flow modulation valve

      DOE Patents [OSTI]

      Hensel, John Peter; Black, Nathaniel; Thorton, Jimmy Dean; Vipperman, Jeffrey Stuart; Lambeth, David N; Clark, William W

      2013-09-24

      A flow modulation valve has a slidably translating hollow armature with at least one energizable coil wound around and fixably attached to the hollow armature. The energizable coil or coils are influenced by at least one permanent magnet surrounding the hollow armature and supported by an outer casing. Lorentz forces on the energizable coils which are translated to the hollow armature, increase or decrease the flow area to provide flow throttling action. The extent of hollow armature translation depends on the value of current supplied and the direction of translation depends on the direction of current flow. The compact nature of the flow modulation valve combined with the high forces afforded by the actuator design provide a flow modulation valve which is highly responsive to high-rate input control signals.

    16. Drains Debubbler Transport Liq. Flow

      E-Print Network [OSTI]

      Weber, Rodney

      Drains Debubbler Transport Liq. Flow (LiF) aq. Anion Cation Waste Vacuum Pump LiF H2 O Pure H2 O 1 Denuders Cyclon 16 L/min 2.5 Ķm cut Sample Tubing ColourFlow, mL/minTubing green/green-1 green/green-2, and Liquid Flow Rates Are Possible Cation: metrosep 2100B-100x4.0mm Eluent: 0.250g/L Dipicolinic acid 1000 u

    17. Elliptic Flow at Large Viscosity

      E-Print Network [OSTI]

      Volker Koch

      2009-09-18

      In this contribution we present an alternative scenario for the large elliptic flow observed in relativistic heavy ion collisions. Motivated by recent results from Lattice QCD on flavor off-diagonal susceptibilities we argue that the matter right above $T_{c}$ can be described by single-particle dynamics in a repulsive single-particle potential, which in turn gives rise to elliptic flow. These ideas can be tested experimentally by measuring elliptic flow of heavy quarks, preferably via the measurement of $J/\\Psi$ elliptic flow.

    18. Module bay with directed flow

      SciTech Connect (OSTI)

      Torczynski, John R. (Albuquerque, NM)

      2001-02-27

      A module bay requires less cleanroom airflow. A shaped gas inlet passage can allow cleanroom air into the module bay with flow velocity preferentially directed toward contaminant rich portions of a processing module in the module bay. Preferential gas flow direction can more efficiently purge contaminants from appropriate portions of the module bay, allowing a reduced cleanroom air flow rate for contaminant removal. A shelf extending from an air inlet slit in one wall of a module bay can direct air flowing therethrough toward contaminant-rich portions of the module bay, such as a junction between a lid and base of a processing module.

    19. Kauai Groundwater Flow Model

      DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

      Nicole Lautze

      2015-01-01

      Groundwater flow model for Kauai. Data is from the following sources: Whittier, R. and A.I. El-Kadi. 2014. Human and Environmental Risk Ranking of Onsite Sewage Disposal Systems For the Hawaiian Islands of Kauai, Molokai, Maui, and Hawaii Ė Final. Prepared by the University of Hawaii, Dept. of Geology and Geophysics for the State of Hawaii Dept. of Health, Safe Drinking Water Branch. September 2014.; and Whittier, R.B., K. Rotzoll, S. Dhal, A.I. El-Kadi, C. Ray, G. Chen, and D. Chang. 2004. Hawaii Source Water Assessment Program Report Ė Volume IV Ė Island of Kauai Source Water Assessment Program Report. Prepared for the Hawaii Department of Health, Safe Drinking Water Branch. University of Hawaii, Water Resources Research Center. Updated 2015.

    20. Determination of the phase diagram of the electron doped superconductor Ba(Fe1-xCox)2As2

      SciTech Connect (OSTI)

      Chu, Jiun-Haw; Analytis, James G.; Kucharczyk, Chris; Fisher, Ian R.; /Stanford U., Geballe Lab.

      2010-02-15

      Systematic measurements of the resistivity, heat capacity, susceptibility and Hall coefficient are presented for single crystal samples of the electron-doped superconductor Ba(Fe{sub 1-x}Co{sub x}){sub 2}As{sub 2}. These data delineate an x-T phase diagram in which the single magnetic/structural phase transition that is observed for undoped BaFe{sub 2}As{sub 2} at 134 K apparently splits into two distinct phase transitions, both of which are rapidly suppressed with increasing Co concentration. Superconductivity emerges for Co concentrations above x {approx}0.025, and appears to coexist with the broken symmetry state for an appreciable range of doping, up to x {approx} 0.06. The optimal superconducting transition temperature appears to coincide with the Co concentration at which the magnetic/structural phase transitions are totally suppressed, at least within the resolution provided by the finite step size between crystals prepared with different doping levels. Superconductivity is observed for a further range of Co concentrations, before being completely suppressed for x {approx} 0.018 and above. The form of this x-T phase diagram is suggestive of an association between superconductivity and a quantum critical point arising from suppression of the magnetic and/or structural phase transitions.

    1. Use of an influence diagram and fuzzy probability for evaluating accident management in a boiling water reactor

      SciTech Connect (OSTI)

      Yu, D.; Kastenberg, W.E.; Okrent, D. (Univ. of California, Los Angeles, CA (United States). Mechanical, Aerospace, and Nuclear Engineering Dept.)

      1994-06-01

      A new approach is presented for evaluating the uncertainties inherent in severe accident management strategies. At first, this analysis considers accident management as a decision problem (i.e., applying a strategy compared with do nothing) and uses an influence diagram. To evaluate imprecise node probabilities in the influence diagram, the analysis introduces the concept of a fuzzy probability. When fuzzy logic is applied, fuzzy probabilities are easily propagated to obtain results. In addition, the results obtained provide not only information similar to the classical approach, which uses point-estimate values, but also additional information regarding the impact of using imprecise input data. As an illustrative example, the proposed methodology is applied to the evaluation of the drywell flooding strategy for a long-term station blackout sequence at the Peach Bottom nuclear power plant. The results show that the drywell flooding strategy is beneficial for preventing reactor vessel breach. It is also effective for reducing the probability of containment failure for both liner melt-through and late overpressurization. Even though uncertainty exists in the results, flooding is preferred to do nothing when evaluated in terms of two risk measures: early and late fatalities.

    2. Reexamination of the mean-field phase diagram of biaxial nematic liquid crystals: Insights from Monte Carlo studies

      E-Print Network [OSTI]

      B. Kamala Latha; Regina Jose; K. P. N. Murthy; V. S. S. Sastry

      2015-09-13

      Investigations of the phase diagram of biaxial liquid crystal systems through analyses of general Hamiltonian models within the simplifications of mean-field theory (MFT), as well as by computer simulations based on microscopic models, are directed towards an appreciation of the role of the underlying molecular-level interactions to facilitate its spontaneous condensation into a nematic phase with biaxial symmetry. Continuing experimental challenges in realising such a system unambiguously, despite encouraging predictions from MFT for example, are requiring more versatile simulational methodologies capable of providing insights into possible hindering barriers within the system, typically gleaned through its free energy dependences on relevant observables as the system is driven through the transitions. The recent brief report from this group [B. Kamala Latha, et. al., Phys. Rev. E 89, 050501 (R), 2014] summarizing the outcome of detailed Monte Carlo simulations carried out employing entropic sampling technique, suggested a qualitative modification of the MFT phase diagram as the Hamiltonian is asymptotically driven towards the so-called partly-repulsive regions. It was argued that the degree of the (cross) coupling between the uniaxial and biaxial tensor components of neighbouring molecules plays a crucial role in facilitating, or otherwise, a ready condensation of the biaxial phase, suggesting that this could be a plausible f actor in explaining the experimental difficulties. In this paper, we elaborate this point further, providing additional evidences from curious variations of free-energy profiles with respect to the relevant orientational order parameters, at different temperatures bracketing the phase transitions.

    3. NO concentration imaging in turbulent nonpremixed flames

      SciTech Connect (OSTI)

      Schefer, R.W. [Sandia National Laboratories, Livermore, CA (United States)

      1993-12-01

      The importance of NO as a pollutant species is well known. An understanding of the formation characteristics of NO in turbulent hydrocarbon flames is important to both the desired reduction of pollutant emissions and the validation of proposed models for turbulent reacting flows. Of particular interest is the relationship between NO formation and the local flame zone, in which the fuel is oxidized and primary heat release occurs. Planar imaging of NO provides the multipoint statistics needed to relate NO formation to the both the flame zone and the local turbulence characteristics. Planar imaging of NO has been demonstrated in turbulent flames where NO was seeded into the flow at high concentrations (2000 ppm) to determine the gas temperature distribution. The NO concentrations in these experiments were significantly higher than those expected in typical hydrocarbon-air flames, which require a much lower detectability limit for NO measurements. An imaging technique based on laser-induced fluorescence with sufficient sensitivity to study the NO formation mechanism in the stabilization region of turbulent lifted-jet methane flames.

    4. Image compression technique

      DOE Patents [OSTI]

      Fu, C.Y.; Petrich, L.I.

      1997-03-25

      An image is compressed by identifying edge pixels of the image; creating a filled edge array of pixels each of the pixels in the filled edge array which corresponds to an edge pixel having a value equal to the value of a pixel of the image array selected in response to the edge pixel, and each of the pixels in the filled edge array which does not correspond to an edge pixel having a value which is a weighted average of the values of surrounding pixels in the filled edge array which do correspond to edge pixels; and subtracting the filled edge array from the image array to create a difference array. The edge file and the difference array are then separately compressed and transmitted or stored. The original image is later reconstructed by creating a preliminary array in response to the received edge file, and adding the preliminary array to the received difference array. Filling is accomplished by solving Laplace`s equation using a multi-grid technique. Contour and difference file coding techniques also are described. The techniques can be used in a method for processing a plurality of images by selecting a respective compression approach for each image, compressing each of the images according to the compression approach selected, and transmitting each of the images as compressed, in correspondence with an indication of the approach selected for the image. 16 figs.

    5. Image compression technique

      DOE Patents [OSTI]

      Fu, Chi-Yung (San Francisco, CA); Petrich, Loren I. (Livermore, CA)

      1997-01-01

      An image is compressed by identifying edge pixels of the image; creating a filled edge array of pixels each of the pixels in the filled edge array which corresponds to an edge pixel having a value equal to the value of a pixel of the image array selected in response to the edge pixel, and each of the pixels in the filled edge array which does not correspond to an edge pixel having a value which is a weighted average of the values of surrounding pixels in the filled edge array which do correspond to edge pixels; and subtracting the filled edge array from the image array to create a difference array. The edge file and the difference array are then separately compressed and transmitted or stored. The original image is later reconstructed by creating a preliminary array in response to the received edge file, and adding the preliminary array to the received difference array. Filling is accomplished by solving Laplace's equation using a multi-grid technique. Contour and difference file coding techniques also are described. The techniques can be used in a method for processing a plurality of images by selecting a respective compression approach for each image, compressing each of the images according to the compression approach selected, and transmitting each of the images as compressed, in correspondence with an indication of the approach selected for the image.

    6. Shock Revival in Core-Collapse Supernovae: A Phase-Diagram Analysis

      E-Print Network [OSTI]

      Gabay, Daniel; Keshet, Uri

      2015-01-01

      We examine the conditions for the revival of the stalled accretion shock in core-collapse supernovae, in the context of the neutrino heating mechanism. We combine one dimensional simulations of the shock revival process with a derivation of a quasi-stationary approximation, which is both accurate and efficient in predicting the flow. In particular, this approach is used to explore how the evolution of the system depends on the shock radius, $R_S$, and velocity, $V_S$ (in addition to other global properties of the system). We do so through a phase space analysis of the shock acceleration, $a_S$, in the $R_S-V_S$ plane, shown to provide quantitative insights into the initiation of runaway expansion and its nature. In the particular case of an initially stationary ($V_S=0,\\;a_S=0$) profile, the prospects for an explosion can be reasonably assessed by the initial signs of the partial derivatives of the shock acceleration, in analogy to a linear damped/anti-damped oscillator. If $\\partial a_S/\\partial R_S0$, runaw...

    7. Overview of the software architecture and data flow for the J-PET tomography device

      E-Print Network [OSTI]

      Krzemien, W; Bialas, P; Czerwinski, E; Gajos, A; Gruntowski, A; Gruntowski, T; Kaplon, L; Kochanowski, A; Korcyl, G; Kowal, J; Kowalski, P; Kozik, T; Kubicz, E; Moskal, P; Niedzwiecki, Sz; Palka, M; Raczynski, L; Rudy, Z; Sharma, N G; Silarski, M; Slomski, A; Stola, K; Strzelecki, A; Trybek, D; Wieczorek, A; Zielinski, M; Wislicki, W; Zon, N

      2015-01-01

      Modern TOF-PET scanner systems require high-speed computing resources for efficient data processing, monitoring and image reconstruction. In this article we present the data flow and software architecture for the novel TOF-PET scanner developed by the J-PET collaboration. We discuss the data acquisition system, reconstruction framework and some image reconstruction issues. Also, the concept of computing outside hospitals in the remote centers such as \\'Swierk Computing Centre in Poland is presented.

    8. Redox Flow Batteries, a Review

      SciTech Connect (OSTI)

      U. Tennessee Knoxville; U. Texas Austin; McGill U; Weber, Adam Z.; Mench, Matthew M.; Meyers, Jeremy P.; Ross, Philip N.; Gostick, Jeffrey T.; Liu, Qinghua

      2011-07-15

      Redox flow batteries are enjoying a renaissance due to their ability to store large amounts of electrical energy relatively cheaply and efficiently. In this review, we examine the components of redox flow batteries with a focus on understanding the underlying physical processes. The various transport and kinetic phenomena are discussed along with the most common redox couples.

    9. Mean Curvature Driven Ricci Flow

      E-Print Network [OSTI]

      Victor Tapia

      2009-03-11

      We obtain the evolution equations for the Riemann tensor, the Ricci tensor and the scalar curvature induced by the mean curvature flow. The evolution for the scalar curvature is similar to the Ricci flow, however, negative, rather than positive, curvature is preserved. Our results are valid in any dimension.

    10. FLOW CONDITIONING DESIGN IN TURBULENT

      E-Print Network [OSTI]

      California at San Diego, University of

      , or liquid sheets, create protective pocket to shield chamber side walls ∑ Lattice of stationary sheets shield front/back walls while allowing beam propagation and target injection (High-Yield Lithium conditioner configurations #12;5 Flow Loop A Pump H 400 gal tank B Bypass line I Butterfly valve C Flow meter

    11. Network Flow Optimization under Uncertainty

      E-Print Network [OSTI]

      Tesfatsion, Leigh

      , production, generation, transportation, trade, storage injections and withdrawals of coal, gas?) xij is flow along arc (i, j), from node i to node j cij is cost per unit of flow along (i, j Network model in words Minimize the cost of satisfying demands for electric energy By: imports, exports

    12. Imaging arrangement and microscope

      DOE Patents [OSTI]

      Pertsinidis, Alexandros; Chu, Steven

      2015-12-15

      An embodiment of the present invention is an imaging arrangement that includes imaging optics, a fiducial light source, and a control system. In operation, the imaging optics separate light into first and second tight by wavelength and project the first and second light onto first and second areas within first and second detector regions, respectively. The imaging optics separate fiducial light from the fiducial light source into first and second fiducial light and project the first and second fiducial light onto third and fourth areas within the first and second detector regions, respectively. The control system adjusts alignment of the imaging optics so that the first and second fiducial light projected onto the first and second detector regions maintain relatively constant positions within the first and second detector regions, respectively. Another embodiment of the present invention is a microscope that includes the imaging arrangement.

    13. Video Toroid Cavity Imager

      DOE Patents [OSTI]

      Gerald, Rex E. II; Sanchez, Jairo; Rathke, Jerome W.

      2004-08-10

      A video toroid cavity imager for in situ measurement of electrochemical properties of an electrolytic material sample includes a cylindrical toroid cavity resonator containing the sample and employs NMR and video imaging for providing high-resolution spectral and visual information of molecular characteristics of the sample on a real-time basis. A large magnetic field is applied to the sample under controlled temperature and pressure conditions to simultaneously provide NMR spectroscopy and video imaging capabilities for investigating electrochemical transformations of materials or the evolution of long-range molecular aggregation during cooling of hydrocarbon melts. The video toroid cavity imager includes a miniature commercial video camera with an adjustable lens, a modified compression coin cell imager with a fiat circular principal detector element, and a sample mounted on a transparent circular glass disk, and provides NMR information as well as a video image of a sample, such as a polymer film, with micrometer resolution.

    14. Vertical flow chemical detection portal

      DOE Patents [OSTI]

      Linker, Kevin L. (Albuquerque, NM); Hannum, David W. (Albuquerque, NM); Conrad, Frank James (Russellville, SC)

      1999-01-01

      A portal apparatus for screening objects or persons for the presence of trace amounts of chemical substances such as illicit drugs or explosives. The apparatus has a test space, in which a person may stand, defined by two generally upright sides spanned by a horizontal transom. One or more fans in the transom generate a downward air flow (uni-directional) within the test space. The air flows downwardly from a high pressure upper zone, past the object or person to be screened. Air moving past the object dislodges from the surface thereof both volatile and nonvolatile particles of the target substance. The particles are entrained into the air flow which continues flowing downward to a lower zone of reduced pressure, where the particle-bearing air stream is directed out of the test space and toward preconcentrator and detection components. The sides of the portal are specially configured to partially contain and maintain the air flow.

    15. Vertical flow chemical detection portal

      DOE Patents [OSTI]

      Linker, K.L.; Hannum, D.W.; Conrad, F.J.

      1999-06-22

      A portal apparatus is described for screening objects or persons for the presence of trace amounts of chemical substances such as illicit drugs or explosives. The apparatus has a test space, in which a person may stand, defined by two generally upright sides spanned by a horizontal transom. One or more fans in the transom generate a downward air flow (uni-directional) within the test space. The air flows downwardly from a high pressure upper zone, past the object or person to be screened. Air moving past the object dislodges from the surface thereof both volatile and nonvolatile particles of the target substance. The particles are entrained into the air flow which continues flowing downward to a lower zone of reduced pressure, where the particle-bearing air stream is directed out of the test space and toward preconcentrator and detection components. The sides of the portal are specially configured to partially contain and maintain the air flow. 3 figs.

    16. Flow rule of dense granular flows down a rough incline

      E-Print Network [OSTI]

      Tamas Borzsonyi; Robert E. Ecke

      2007-07-09

      We present experimental findings on the flow rule for granular flows on a rough inclined plane using various materials including sand and glass beads of various sizes and four types of copper particles with different shapes. We characterize the materials by measuring $h_s$ (the thickness at which the flow subsides) as a function of the plane inclination $\\theta$ on various surfaces. Measuring the surface velocity $u$ of the flow as a function of flow thickness $h$, we find that for sand and glass beads the Pouliquen flow rule $u/\\sqrt{gh} \\sim \\beta h/h_s$ provides reasonable but not perfect collapse of the $u(h)$ curves measured for various $\\theta$ and mean particle diameter $d$. Improved collapse is obtained for sand and glass beads by using a recently proposed scaling of the form $u/\\sqrt{gh} =\\beta \\cdot h \\tan^2\\theta /h_s\\ \\tan^2\\theta_1$ where $\\theta_1$ is the angle at which the $h_s(\\theta)$ curves diverge. Measuring the slope $\\beta$ for ten different sizes of sand and glass beads, we find a systematic, strong increase of $\\beta$ with the divergence angle $\\theta_1$ of $h_s$. The copper materials with different shapes are not well described by either flow rule with $u \\sim h^{3/2}$.

    17. Recurrent flow analysis in spatiotemporally chaotic 2-dimensional Kolmogorov flow

      E-Print Network [OSTI]

      Dan Lucas; Rich Kerswell

      2015-04-01

      Motivated by recent success in the dynamical systems approach to transitional flow, we study the efficiency and effectiveness of extracting simple invariant sets (recurrent flows) directly from chaotic/turbulent flows and the potential of these sets for providing predictions of certain statistics of the flow. Two-dimensional Kolmogorov flow (the 2D Navier-Stokes equations with a sinusoidal body force) is studied both over a square [0, 2{\\pi}]2 torus and a rectangular torus extended in the forcing direction. In the former case, an order of magnitude more recurrent flows are found than previously (Chandler & Kerswell 2013) and shown to give improved predictions for the dissipation and energy pdfs of the chaos via periodic orbit theory. Over the extended torus at low forcing amplitudes, some extracted states mimick the statistics of the spatially-localised chaos present surprisingly well recalling the striking finding of Kawahara & Kida (2001) in low-Reynolds-number plane Couette flow. At higher forcing amplitudes, however, success is limited highlighting the increased dimensionality of the chaos and the need for larger data sets. Algorithmic developments to improve the extraction procedure are discussed.

    18. Wavy flow cooling concept for turbine airfoils

      DOE Patents [OSTI]

      Liang, George (Palm City, FL)

      2010-08-31

      An airfoil including an outer wall and a cooling cavity formed therein. The cooling cavity includes a leading edge flow channel located adjacent a leading edge of the airfoil and a trailing edge flow channel located adjacent a trailing edge of the airfoil. Each of the leading edge and trailing edge flow channels define respective first and second flow axes located between pressure and suction sides of the airfoil. A plurality of rib members are located within each of the flow channels, spaced along the flow axes, and alternately extending from opposing sides of the flow channels to define undulating flow paths through the flow channels.

    19. Ferroelectric optical image comparator

      DOE Patents [OSTI]

      Butler, M.A.; Land, C.E.; Martin, S.J.; Pfeifer, K.B.

      1993-11-30

      A ferroelectric optical image comparator has a lead lanthanum zirconate titanate thin-film device which is constructed with a semi-transparent or transparent conductive first electrode on one side of the thin film, a conductive metal second electrode on the other side of the thin film, and the second electrode is in contact with a nonconducting substrate. A photoinduced current in the device represents the dot product between a stored image and an image projected onto the first electrode. One-dimensional autocorrelations are performed by measuring this current while displacing the projected image. 7 figures.

    20. Graphics and Image Standards

      Broader source: Energy.gov [DOE]

      For EERE websites and applications, follow these requirements and best practices for designing graphics and developing images. This includes making them Section 508-compliant.

    1. Quantitative luminescence imaging system

      DOE Patents [OSTI]

      Erwin, David N. (San Antonio, TX); Kiel, Johnathan L. (San Antonio, TX); Batishko, Charles R. (West Richland, WA); Stahl, Kurt A. (Richland, WA)

      1990-01-01

      The QLIS images and quantifies low-level chemiluminescent reactions in an electromagnetic field. It is capable of real time nonperturbing measurement and simultaneous recording of many biochemical and chemical reactions such as luminescent immunoassays or enzyme assays. The system comprises image transfer optics, a low-light level digitizing camera with image intensifying microchannel plates, an image process or, and a control computer. The image transfer optics may be a fiber image guide with a bend, or a microscope, to take the light outside of the RF field. Output of the camera is transformed into a localized rate of cumulative digitalized data or enhanced video display or hard-copy images. The system may be used as a luminescent microdosimetry device for radiofrequency or microwave radiation, as a thermal dosimeter, or in the dosimetry of ultra-sound (sonoluminescence) or ionizing radiation. It provides a near-real-time system capable of measuring the extremely low light levels from luminescent reactions in electromagnetic fields in the areas of chemiluminescence assays and thermal microdosimetry, and is capable of near-real-time imaging of the sample to allow spatial distribution analysis of the reaction. It can be used to instrument three distinctly different irradiation configurations, comprising (1) RF waveguide irradiation of a small Petri-dish-shaped sample cell, (2) RF irradiation of samples in a microscope for the microscopie imaging and measurement, and (3) RF irradiation of small to human body-sized samples in an anechoic chamber.

    2. Quantitative luminescence imaging system

      DOE Patents [OSTI]

      Erwin, D.N.; Kiel, J.L.; Batishko, C.R.; Stahl, K.A.

      1990-08-14

      The QLIS images and quantifies low-level chemiluminescent reactions in an electromagnetic field. It is capable of real time nonperturbing measurement and simultaneous recording of many biochemical and chemical reactions such as luminescent immunoassays or enzyme assays. The system comprises image transfer optics, a low-light level digitizing camera with image intensifying microchannel plates, an image process or, and a control computer. The image transfer optics may be a fiber image guide with a bend, or a microscope, to take the light outside of the RF field. Output of the camera is transformed into a localized rate of cumulative digitalized data or enhanced video display or hard-copy images. The system may be used as a luminescent microdosimetry device for radiofrequency or microwave radiation, as a thermal dosimeter, or in the dosimetry of ultra-sound (sonoluminescence) or ionizing radiation. It provides a near-real-time system capable of measuring the extremely low light levels from luminescent reactions in electromagnetic fields in the areas of chemiluminescence assays and thermal microdosimetry, and is capable of near-real-time imaging of the sample to allow spatial distribution analysis of the reaction. It can be used to instrument three distinctly different irradiation configurations, comprising (1) RF waveguide irradiation of a small Petri-dish-shaped sample cell, (2) RF irradiation of samples in a microscope for the microscopic imaging and measurement, and (3) RF irradiation of small to human body-sized samples in an anechoic chamber. 22 figs.

    3. Fermilab | Press Room | Images

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

      When using these images, please credit Fermilab. Return to Press Release Med Res | Hi Res According to the Standard Model of particles and forces, the Higgs mechanism gives...

    4. Fermilab | Press Room | Images

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

      using these images, please credit them as specified. Return to Press Release Med Res | Hi Res The Standard Model describes the interactions of the fundamental particle of the...

    5. HYPERBOLIC SYSTEMS OF THREE-PHASE FLOW

      E-Print Network [OSTI]

      Patzek, Tadeusz W.

      HYPERBOLIC SYSTEMS OF THREE-PHASE FLOW IN POROUS MEDIA Gordon Conference on Flow and Transport SINTEF IKT, Dept. Applied Mathematics, Norway #12;2 WHY THREE-PHASE FLOW + Three-phase flow is the rule: ! Exceptionally accurate, fast numerical solutions to realistic three-phase flows in porous media + Approach

    6. Mathematical Model Analysis for Hg Flow

      E-Print Network [OSTI]

      McDonald, Kirk

      Mathematical Model Analysis for Hg Flow Yan Zhan SUNYSB April 20th, 2010 #12;Outline ∑ Introduction ≠ Mechanism of Jet Breakup & Atomization ≠ Dynamic Problems in Hg Target Flow ∑ Mathematical Model for Hg Flow ≠ Parameters ≠ Incompressible Flow (No MHD) ≠ Incompressible Flow (MHD) ≠ Proton Beam Energy Conversion

    7. Edge-based correlation image registration for multispectral imaging

      DOE Patents [OSTI]

      Nandy, Prabal (Albuquerque, NM)

      2009-11-17

      Registration information for images of a common target obtained from a plurality of different spectral bands can be obtained by combining edge detection and phase correlation. The images are edge-filtered, and pairs of the edge-filtered images are then phase correlated to produce phase correlation images. The registration information can be determined based on these phase correlation images.

    8. Turbine blade tip flow discouragers

      DOE Patents [OSTI]

      Bunker, Ronald Scott (Niskayuna, NY)

      2000-01-01

      A turbine assembly comprises a plurality of rotating blade portions in a spaced relation with a stationery shroud. The rotating blade portions comprise a root section, a tip portion and an airfoil. The tip portion has a pressure side wall and a suction side wall. A number of flow discouragers are disposed on the blade tip portion. In one embodiment, the flow discouragers extend circumferentially from the pressure side wall to the suction side wall so as to be aligned generally parallel to the direction of rotation. In an alternative embodiment, the flow discouragers extend circumferentially from the pressure side wall to the suction side wall so as to be aligned at an angle in the range between about 0.degree. to about 60.degree. with respect to a reference axis aligned generally parallel to the direction of rotation. The flow discouragers increase the flow resistance and thus reduce the flow of hot gas flow leakage for a given pressure differential across the blade tip portion so as to improve overall turbine efficiency.

    9. Microemulsion nanocomposites: phase diagram, rheology and structure using a combined small angle neutron scattering and reverse Monte Carlo approach

      E-Print Network [OSTI]

      Nicolas Puech; Serge Mora; Ty Phou; Gregoire Porte; Jacques Jestin; Julian Oberdisse

      2010-12-04

      The effect of silica nanoparticles on transient microemulsion networks made of microemulsion droplets and telechelic copolymer molecules in water is studied, as a function of droplet size and concentration, amount of copolymer, and nanoparticle volume fraction. The phase diagram is found to be affected, and in particular the percolation threshold characterized by rheology is shifted upon addition of nanoparticles, suggesting participation of the particles in the network. This leads to a peculiar reinforcement behaviour of such microemulsion nanocomposites, the silica influencing both the modulus and the relaxation time. The reinforcement is modelled based on nanoparticles connected to the network via droplet adsorption. Contrast-variation Small Angle Neutron Scattering coupled to a reverse Monte Carlo approach is used to analyse the microstructure. The rather surprising intensity curves are shown to be in good agreement with the adsorption of droplets on the nanoparticle surface.

    10. Y-12 Plant remedial action Technology Logic Diagram: Volume 3, Technology evaluation data sheets: Part A, Remedial action

      SciTech Connect (OSTI)

      1994-09-01

      The Y-12 Plant Remedial Action Technology Logic Diagram (TLD) was developed to provide a decision-support tool that relates environmental restoration (ER) problems at the Y-12 Plant to potential technologies that can remediate these problems. The TLD identifies the research, development, demonstration, testing, and evaluation needed for sufficient development of these technologies to allow for technology transfer and application to remedial action (RA) activities. The TLD consists of three volumes. Volume 1 contains an overview of the TLD, an explanation of the program-specific responsibilities, a review of identified technologies, and the rankings of remedial technologies. Volume 2 contains the logic linkages among environmental management goals, environmental problems and the various technologies that have the potential to solve these problems. Volume 3 contains the TLD data sheets. This report is Part A of Volume 3 and contains the Remedial Action section.

    11. Electron band theory predictions and the construction of phase diagrams. [HfPt; TaIr; WOs

      SciTech Connect (OSTI)

      Watson, R.E.; Bennett, L.H.; Davenport, J.W.; Weinert, M.

      1985-01-01

      The a priori theory of metals is yielding energy results which are relevant to the construction of phase diagrams - to the solution phases as well as to line compounds. There is a wide range in the rigor of the calculations currently being done and this is discussed. Calculations for the structural stabilities (fcc vs bcc vs hcp) of the elemental metals, quantities which are employed in the constructs of the terminal phases, are reviewed and shown to be inconsistent with the values currently employed in such constructs (also see Miodownik elsewhere in this volume). Finally, as an example, the calculated heats of formation are compared with experiment for PtHf, IrTa and OsW, three compounds with the same electron to atom ratio but different bonding properties.

    12. The transition from two phase bubble flow to slug flow

      E-Print Network [OSTI]

      Radovcich, Nick A.

      1962-01-01

      The process of transition from bubble to slug flow in a vertical pipe has been studied analytically and experimentally. An equation is presented which gives the agglomeration time as a function of void fraction, channel ...

    13. DETECTION OF EQUATORWARD MERIDIONAL FLOW AND EVIDENCE OF DOUBLE-CELL MERIDIONAL CIRCULATION INSIDE THE SUN

      SciTech Connect (OSTI)

      Zhao Junwei; Bogart, R. S.; Kosovichev, A. G.; Hartlep, Thomas; Duvall, T. L. Jr.

      2013-09-10

      Meridional flow in the solar interior plays an important role in redistributing angular momentum and transporting magnetic flux inside the Sun. Although it has long been recognized that the meridional flow is predominantly poleward at the Sun's surface and in its shallow interior, the location of the equatorward return flow and the meridional flow profile in the deeper interior remain unclear. Using the first 2 yr of continuous helioseismology observations from the Solar Dynamics Observatory/Helioseismic Magnetic Imager, we analyze travel times of acoustic waves that propagate through different depths of the solar interior carrying information about the solar interior dynamics. After removing a systematic center-to-limb effect in the helioseismic measurements and performing inversions for flow speed, we find that the poleward meridional flow of a speed of 15 m s{sup -1} extends in depth from the photosphere to about 0.91 R{sub Sun }. An equatorward flow of a speed of 10 m s{sup -1} is found between 0.82 and 0.91 R{sub Sun} in the middle of the convection zone. Our analysis also shows evidence of that the meridional flow turns poleward again below 0.82 R{sub Sun }, indicating an existence of a second meridional circulation cell below the shallower one. This double-cell meridional circulation profile with an equatorward flow shallower than previously thought suggests a rethinking of how magnetic field is generated and redistributed inside the Sun.

    14. Oak Ridge National Laboratory Technology Logic Diagram. Volume 3, Technology evaluation data sheets: Part C, Robotics/automation, Waste management

      SciTech Connect (OSTI)

      Not Available

      1993-09-01

      The Oak Ridge National Laboratory Technology Logic Diagram (TLD) was developed to provide a decision support tool that relates environmental restoration (ER) and waste management (WM) problems at Oak Ridge National Laboratory (ORNL) to potential technologies that can remediate these problems. The TLD identifies the research, development, demonstration testing, and evaluation needed to develop these technologies to a state that allows technology transfer and application to decontamination and decommissioning (D&D), remedial action (RA), and WM activities. The TLD consists of three fundamentally separate volumes: Vol. 1, Technology Evaluation; Vol. 2, Technology Logic Diagram and Vol. 3, Technology EvaLuation Data Sheets. Part A of Vols. 1 and 2 focuses on RA. Part B of Vols. 1 and 2 focuses on the D&D of contaminated facilities. Part C of Vols. 1 and 2 focuses on WM. Each part of Vol. 1 contains an overview of the TM, an explanation of the problems facing the volume-specific program, a review of identified technologies, and rankings of technologies applicable to the site. Volume 2 (Pts. A. B. and C) contains the logic linkages among EM goals, environmental problems, and the various technologies that have the potential to solve these problems. Volume 3 (Pts. A. B, and C) contains the TLD data sheets. This volume provides the technology evaluation data sheets (TEDS) for ER/WM activities (D&D, RA and WM) that are referenced by a TEDS code number in Vol. 2 of the TLD. Each of these sheets represents a single logic trace across the TLD. These sheets contain more detail than is given for the technologies in Vol. 2.

    15. Oak Ridge National Laboratory Technology Logic Diagram. Volume 3, Technology evaluation data sheets: Part B, Dismantlement, Remedial action

      SciTech Connect (OSTI)

      Not Available

      1993-09-01

      The Oak Ridge National Laboratory Technology Logic Diagram (TLD) was developed to provide a decision support tool that relates environmental restoration (ER) and waste management (WM) problems at Oak Ridge National Laboratory (ORNL) to potential technologies that can remediate these problems. The TLD identifies the research, development, demonstration testing, and evaluation needed to develop these technologies to a state that allows technology transfer and application to decontamination and decommissioning (D&D), remedial action (RA), and WM activities. The TLD consists of three fundamentally separate volumes: Vol. 1, Technology Evaluation; Vol. 2, Technology Logic Diagram and Vol. 3, Technology EvaLuation Data Sheets. Part A of Vols. 1 and 2 focuses on RA. Part B of Vols. 1 and 2 focuses on the D&D of contaminated facilities. Part C of Vols. 1 and 2 focuses on WM. Each part of Vol. 1 contains an overview of the TM, an explanation of the problems facing the volume-specific program, a review of identified technologies, and rankings of technologies applicable to the site. Volume 2 (Pts. A. B. and C) contains the logic linkages among EM goals, environmental problems, and the various technologies that have the potential to solve these problems. Volume 3 (Pts. A. B, and C) contains the TLD data sheets. This volume provides the technology evaluation data sheets (TEDS) for ER/WM activities (D&D, RA and WM) that are referenced by a TEDS code number in Vol. 2 of the TLD. Each of these sheets represents a single logic trace across the TLD. These sheets contain more detail than is given for the technologies in Vol. 2.

    16. Idaho National Engineering Laboratory Waste Area Groups 1-7 and 10 Technology Logic Diagram. Volume 2

      SciTech Connect (OSTI)

      O`Brien, M.C.; Meservey, R.H.; Little, M.; Ferguson, J.S.; Gilmore, M.C.

      1993-09-01

      The Idaho National Engineering Laboratory (INEL) Technology Logic Diagram (TLD) was developed to provide a decision support tool that relates Environmental Restoration (ER) and Waste Management (WM) problems at the INEL to potential technologies that can remediate these problems. The TLD identifies the research, development, demonstration, testing, and evaluation needed to develop these technologies to a state that allows technology transfer and application to an environmental restoration need. It is essential that follow-on engineering and system studies be conducted to build on the output of this project. These studies will begin by selecting the most promising technologies identified in this TLD and finding an optimum mix of technologies that will provide a socially acceptable balance between cost and risk to meet the site windows of opportunity. The TLD consists of three separate volumes: Volume I includes the purpose and scope of the TLD, a brief history of the INEL Waste Area Groups, and environmental problems they represent. A description of the TLD, definitions of terms, a description of the technology evaluation process, and a summary of each subelement, is presented. Volume II (this volume) describes the overall layout and development of the TLD in logic diagram format. This section addresses the environmental restoration of contaminated INEL sites. Specific INEL problem areas/contaminants are identified along with technology solutions, the status of the technologies, precise science and technology needs, and implementation requirements. Volume III provides the Technology Evaluation Data Sheets (TEDS) for Environmental Restoration and Waste Management (EM) activities that are referenced by a TEDS codenumber in Volume II. Each of these sheets represents a single logic trace across the TLD. These sheets contain more detail than provided for technologies in Volume II.

    17. BPS dyons and Hesse flow

      E-Print Network [OSTI]

      Dieter Van den Bleeken

      2012-02-03

      We revisit BPS solutions to classical N=2 low energy effective gauge theories. It is shown that the BPS equations can be solved in full generality by the introduction of a Hesse potential, a symplectic analog of the holomorphic prepotential. We explain how for non-spherically symmetric, non-mutually local solutions, the notion of attractor flow generalizes to gradient flow with respect to the Hesse potential. Furthermore we show that in general there is a non-trivial magnetic complement to this flow equation that is sourced by the momentum current in the solution.

    18. Transient eddy current flow metering

      E-Print Network [OSTI]

      Forbriger, Jan

      2015-01-01

      Measuring local velocities or entire flow rates in liquid metals or semiconductor melts is a notorious problem in many industrial applications, including metal casting and silicon crystal growth. We present a new variant of an old technique which relies on the continuous tracking of a flow-advected transient eddy current that is induced by a pulsed external magnetic field. This calibration-free method is validated by applying it to the velocity of a spinning disk made of aluminum. First tests at a rig with a flow of liquid GaInSn are also presented.

    19. Scandinavian Workshop on Imaging

      E-Print Network [OSTI]

      Mosegaard, Klaus

      Barcode Imaging of Chocolate Milk Quan.fica.on of Microstructures in Freeze.on of Fat Content in Raw Beef Cut Meat Evalua.on by RGB-to-spectrum Imaging.on to Visualizing Meat Products Characteriza.on of Commercial Danish Apple Cul.var Using Novel

    20. Medical imaging systems

      DOE Patents [OSTI]

      Frangioni, John V. (Wayland, MA)

      2012-07-24

      A medical imaging system provides simultaneous rendering of visible light and fluorescent images. The system may employ dyes in a small-molecule form that remains in a subject's blood stream for several minutes, allowing real-time imaging of the subject's circulatory system superimposed upon a conventional, visible light image of the subject. The system may also employ dyes or other fluorescent substances associated with antibodies, antibody fragments, or ligands that accumulate within a region of diagnostic significance. In one embodiment, the system provides an excitation light source to excite the fluorescent substance and a visible light source for general illumination within the same optical guide that is used to capture images. In another embodiment, the system is configured for use in open surgical procedures by providing an operating area that is closed to ambient light. More broadly, the systems described herein may be used in imaging applications where a visible light image may be usefully supplemented by an image formed from fluorescent emissions from a fluorescent substance that marks areas of functional interest.