Sample records for tension leg platform

  1. Static Stability of Tension Leg Platforms

    E-Print Network [OSTI]

    Xu, Ning

    2010-07-14T23:59:59.000Z

    The static stability of a Tension Leg Platform (TLP) with an intact tendon system is principally provided by its tendons and hence quite different from those of a conventional ship or even a floating structure positioned by its mooring system...

  2. Hydrodynamic heave damping estimation and scaling for tension leg platforms

    SciTech Connect (OSTI)

    Thiagarajan, K.P.; Troesch, A.W. (Univ. of Michigan, Ann Arbor, MI (United States))

    1994-05-01T23:59:59.000Z

    Resonant heave excitation of tension leg platform (TLP) tendons is typically of high-frequency and small amplitude. The response of the tendons to this excitation is non-negligible due to a very small drag coefficient of the structure in this mode of oscillation. Small values of the drag force complicate experimental estimation in a laboratory due to the dominating inertial force. Model tests conducted at the University of Michigan investigating the damping experienced by a cylinder of 0.457 m (1.5 ft) diameter and 1.219 m (4.0 ft) draft are described here. The cylinder is vertical and surface-piercing, and oscillates parallel to its axis. The amplitude of the forcing is varied to give a Keulegan-Carpenter (KC) number range of 0.1--1.0. The frequency parameter [beta] is 89236, corresponding to an oscillation frequency of 0.41 Hz. From these experiments, a definite nonlinear trend is observed between the drag force and velocity conflicting with some of the results reported by Huse (1990) and Chakrabarti and Hanna (1991). The heave damping coefficients of individual structural components of a TLP follow different scaling laws. Rules are presented for scaling friction and form drag components from model to full scale. Results from experiments are used to obtain a scaling law for vertical columns of a TLP. Previously published results are used for horizontal pontoons. An example TLP calculation shows that the heave damping ratio of horizontal cylinders is approximately 0.049--0.078 percent, depending upon cylinder shape, and that for vertical cylinders is in the range 0.025--0.171 percent, depending upon KC.

  3. Model Development and Loads Analysis of a Wind Turbine on a Floating Offshore Tension Leg Platform

    SciTech Connect (OSTI)

    Matha, D.; Fischer, T.; Kuhn, M.; Jonkman, J.

    2010-02-01T23:59:59.000Z

    This report presents results of the analysis of a 5-MW wind turbine located on a floating offshore tension leg platform (TLP) that was conducted using the fully coupled time-domain aero-hydro-servo-elastic design code FAST with AeroDyn and HydroDyn. Models in this code are of greater fidelity than most of the models that have been used to analyze floating turbines in the past--which have neglected important hydrodynamic and mooring system effects. The report provides a description of the development process of a TLP model, which is a modified version of a Massachusetts Institute of Technology design derived from a parametric linear frequency-domain optimization process. An extensive loads and stability analysis for ultimate and fatigue loads according to the procedure of the International Electrotechnical Commission offshore wind turbine design standard was performed with the verified TLP model. Response statistics, extreme event tables, fatigue lifetimes, and selected time histories of design-driving extreme events are analyzed and presented. Loads for the wind turbine on the TLP are compared to those of an equivalent land-based turbine in terms of load ratios. Major instabilities for the TLP are identified and described.

  4. A knowledge base approach to the design of tension leg platforms

    E-Print Network [OSTI]

    Rijken, Oriol Rafael

    1991-01-01T23:59:59.000Z

    and braces. The platform is attached to the subsea base by means of tt, tethers and has tt, risers. Though the platform 13 shown in Fig. 2 has four columns which is consistent with popular designs but for increased versatility of the knowledge base... height, I represents the length of the tether, H is the water depth and a is the platform draft. In this study we assume that the subsea base doesn't have any height therefore the tether length plus the draft equals the water depth. The on...

  5. Numerical Prediction of Experimentally Observed Behavior of a Scale Model of an Offshore Wind Turbine Supported by a Tension-Leg Platform: Preprint

    SciTech Connect (OSTI)

    Prowell, I.; Robertson, A.; Jonkman, J.; Stewart, G. M.; Goupee, A. J.

    2013-01-01T23:59:59.000Z

    Realizing the critical importance the role physical experimental tests play in understanding the dynamics of floating offshore wind turbines, the DeepCwind consortium conducted a one-fiftieth-scale model test program where several floating wind platforms were subjected to a variety of wind and wave loading condition at the Maritime Research Institute Netherlands wave basin. This paper describes the observed behavior of a tension-leg platform, one of three platforms tested, and the systematic effort to predict the measured response with the FAST simulation tool using a model primarily based on consensus geometric and mass properties of the test specimen.

  6. Model Development and Loads Analysis of an Offshore Wind Turbine on a Tension Leg Platform with a Comparison to Other Floating Turbine Concepts: April 2009

    SciTech Connect (OSTI)

    Matha, D.

    2010-02-01T23:59:59.000Z

    This report presents results of the analysis of a 5-MW wind turbine located on a floating offshore tension leg platform (TLP) that was conducted using the fully coupled time-domain aero-hydro-servo-elastic design code FAST with AeroDyn and HydroDyn. The report also provides a description of the development process of the TLP model. The model has been verified via comparisons to frequency-domain calculations. Important differences have been identified between the frequency-domain and time-domain simulations, and have generated implications for the conceptual design process. An extensive loads and stability analysis for ultimate and fatigue loads according to the procedure of the IEC 61400-3 offshore wind turbine design standard was performed with the verified TLP model. This report compares the loads for the wind turbine on the TLP to those of an equivalent land-based turbine. Major instabilities for the TLP are identified and described.

  7. Centrifuge Model Tests on Anchor Piles for Tension Leg Platforms E. H. Doyle, Consultant; E.T.R. Dean, Soil Models Limited; J. S. Sharma, University of Saskatchewan; M. D. Bolton,

    E-Print Network [OSTI]

    Bolton, Malcolm

    OTC 16845 Centrifuge Model Tests on Anchor Piles for Tension Leg Platforms E. H. Doyle, Consultant to study the lateral response of large-diameter piles in clay subject to large lateral displacements. The objectives were to quantify the cyclic response for lateral loading of two closely-spaced piles loaded

  8. Calibration and Validation of a FAST Floating Wind Turbine Model of the DeepCwind Scaled Tension-Leg Platform: Preprint

    SciTech Connect (OSTI)

    Stewart, G.; Lackner, M.; Robertson, A.; Jonkman, J.; Goupee, A.

    2012-05-01T23:59:59.000Z

    With the intent of improving simulation tools, a 1/50th-scale floating wind turbine atop a TLP was designed based on Froude scaling by the University of Maine under the DeepCwind Consortium. This platform was extensively tested in a wave basin at MARIN to provide data to calibrate and validate a full-scale simulation model. The data gathered include measurements from static load tests and free-decay tests, as well as a suite of tests with wind and wave forcing. A full-scale FAST model of the turbine-TLP system was created for comparison to the results of the tests. Analysis was conducted to validate FAST for modeling the dynamics of this floating system through comparison of FAST simulation results to wave tank measurements. First, a full-scale FAST model of the as-tested scaled configuration of the system was constructed, and this model was then calibrated through comparison to the static load, free-decay, regular wave only, and wind-only tests. Next, the calibrated FAST model was compared to the combined wind and wave tests to validate the coupled hydrodynamic and aerodynamic predictive performance. Limitations of both FAST and the data gathered from the tests are discussed.

  9. On the kinematic constraint surfaces of general three-legged planar robot platforms

    E-Print Network [OSTI]

    Hayes, John

    On the kinematic constraint surfaces of general three-legged planar robot platforms M.J.D. Hayes a robot platforms are enumerated and classified. Constraint surfaces corresponding to individual platform important applications to the kinematic analysis of planar three-legged robot platforms, hence appropriate

  10. Singularity-invariant leg rearrangements in doubly-planar Stewart-Gough platforms

    E-Print Network [OSTI]

    Singularity-invariant leg rearrangements in doubly-planar Stewart-Gough platforms Júlia Borràs of a Stewart-Gough platform, i.e., changing the locations of its leg attachments, modifies the platform-Gough platforms containing rigid components. In this work, the authors go a step further presenting singularity

  11. Extended tension leg platform design for offshore wind turbine systems

    E-Print Network [OSTI]

    Parker, Nicholas W. (Nicholas William)

    2007-01-01T23:59:59.000Z

    The rise of reliable wind energy application has become a primary alternative to conventional fossil fuel power plants in the United States and around the world. The feasibility of building large scale wind farms has become ...

  12. MOWII Webinar: OCGen Prototype Testing: Evaluating Buoyancy Pod/Tension Leg Platforms for Tidal Energy Development

    Broader source: Energy.gov [DOE]

    Ocean Renewable Power Company (ORPC) will present the results of the company's design, permitting, and testing of a mooring system for ocean energy devices in partnership with the U.S. Department...

  13. active straight leg: Topics by E-print Network

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

    body. The robot Paris-Sud XI, Universit de 191 A Hybrid Experimental Platform for Sony Legged Robots Bo Li, Huosheng Hu, Libor Spacek Engineering Websites Summary: 7 A Hybrid...

  14. Quantitative Comparison of the Responses of Three Floating Platforms

    SciTech Connect (OSTI)

    Jonkman, J.; Matha, D.

    2010-03-01T23:59:59.000Z

    This report presents a comprehensive dynamic-response analysis of three offshore floating wind turbine concepts. Models were composed of one 5-MW turbine supported on land and three 5-MW turbines located offshore on a tension leg platform, a spar buoy, and a barge. A loads and stability analysis adhering to the procedures of international design standards was performed for each model using the fully coupled time-domain aero-hydro-servo-elastic design code FAST with AeroDyn and HydroDyn. The concepts are compared based on the calculated ultimate loads, fatigue loads, and instabilities. The results of this analysis will help resolve the fundamental design trade-offs between the floating-system concepts.

  15. SURFACE TENSION DRIVEN CONVECTION

    E-Print Network [OSTI]

    Wang, Shouhong

    SURFACE TENSION DRIVEN CONVECTION DIJKSTRA, SENGUL, WANG INTRODUCTION LINEAR THEORY MAIN THEOREMS CONCLUDING REMARKS DYNAMIC TRANSITIONS OF SURFACE TENSION DRIVEN CONVECTION H.Dijkstra T. Sengul S. Wang #12;SURFACE TENSION DRIVEN CONVECTION DIJKSTRA, SENGUL, WANG INTRODUCTION LINEAR THEORY MAIN THEOREMS

  16. Design of robotic quadruped legs

    E-Print Network [OSTI]

    McKenzie, Jacob Elijah

    2012-01-01T23:59:59.000Z

    Prized for their performance on prepared surfaces, wheeled vehicles are often limited in mobility by rough and unstructured terrain. Conversely, systems that rely on legs have shown promising rough terrain performance but ...

  17. 6, 1205712120, 2006 Surface tension

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ACPD 6, 12057­12120, 2006 Surface tension: measurement, modelling and cloud activation D. O a Creative Commons License. Atmospheric Chemistry and Physics Discussions Surface tensions of multi­12120, 2006 Surface tension: measurement, modelling and cloud activation D. O. Topping et al. Title Page

  18. Pipe crawler with extendable legs

    DOE Patents [OSTI]

    Zollinger, W.T.

    1992-06-16T23:59:59.000Z

    A pipe crawler for moving through a pipe in inchworm fashion having front and rear leg assemblies separated by air cylinders to increase and decrease the spacing between assemblies. Each leg of the four legs of an assembly is moved between a wall-engaging, extended position and a retracted position by a separate air cylinder. The air cylinders of the leg assemblies are preferably arranged in pairs of oppositely directed cylinders with no pair lying in the same axial plane as another pair. Therefore, the cylinders can be as long as a leg assembly is wide and the crawler can crawl through sections of pipes where the diameter is twice that of other sections. The crawler carries a valving system, a manifold to distribute air supplied by a single umbilical air hose to the various air cylinders in a sequence controlled electrically by a controller. The crawler also utilizes a rolling mechanism, casters in this case, to reduce friction between the crawler and pipe wall thereby further extending the range of the pipe crawler. 8 figs.

  19. Pipe crawler with extendable legs

    DOE Patents [OSTI]

    Zollinger, William T. (3927 Almon Dr., Martinez, GA 30907)

    1992-01-01T23:59:59.000Z

    A pipe crawler for moving through a pipe in inchworm fashion having front and rear leg assemblies separated by air cylinders to increase and decrease the spacing between assemblies. Each leg of the four legs of an assembly is moved between a wall-engaging, extended position and a retracted position by a separate air cylinder. The air cylinders of the leg assemblies are preferably arranged in pairs of oppositely directed cylinders with no pair lying in the same axial plane as another pair. Therefore, the cylinders can be as long a leg assembly is wide and the crawler can crawl through sections of pipes where the diameter is twice that of other sections. The crawler carries a valving system, a manifold to distribute air supplied by a single umbilical air hose to the various air cylinders in a sequence controlled electrically by a controller. The crawler also utilizes a rolling mechanism, casters in this case, to reduce friction between the crawler and pipe wall thereby further extending the range of the pipe crawler.

  20. Cable tensioned membrane solar collector module with variable tension control

    DOE Patents [OSTI]

    Murphy, L.M.

    1984-01-09T23:59:59.000Z

    Disclosed is a solar collector comprising a membrane member for concentrating sunlight, a plurality of elongated structural members for suspending the membrane member thereon, and a plurality of control members for adjustably tensioning the membrane member, as well as for controlling a focus produced by the membrane members. Each control member is disposed at a different corresponding one of the plurality of structural members. The collector also comprises an elongated flexible tensioning member, which serves to stretch the membrane member and to thereafter hold it in tension, and a plurality of sleeve members which serve to provide the membrane member with a desired surface contour during tensioning of the membrane member. The tensioning member is coupled to the structural members such that the tensioning member is adjustably tensioned through the structural members. The tensioning member is also coupled to the membrane member through the sleeve members such that the sleeve members uniformly and symmetrically stretch the membrane member upon applying tension to the tensioning member with the control members.

  1. Cable tensioned membrane solar collector module with variable tension control

    DOE Patents [OSTI]

    Murphy, Lawrence M. (Lakewood, CO)

    1985-01-01T23:59:59.000Z

    Disclosed is a solar collector comprising a membrane for concentrating sunlight, a plurality of elongated structural members for suspending the membrane member thereon, and a plurality of control members for adjustably tensioning the membrane member, as well as for controlling a focus produced by the membrane members. Each control member is disposed at a different corresponding one of the plurality of structural members. The collector also comprises an elongated flexible tensioning member, which serves to stretch the membrane member and to thereafter hold it in tension, and a plurality of sleeve members, which serve to provide the membrane member with a desired surface contour during tensioning of the membrane member. The tensioning member is coupled to the structural members such that the tensioning member is adjustably tensioned through the structural members. The tensioning member is also coupled to the membrane member through the sleeve members such that the sleeve members uniformly and symmetrically stretch the membrane member upon applying tension to the tensioning member with the control members.

  2. acute leg ischaemia: Topics by E-print Network

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

    & width...should resemble the size of recipient's leg Provancher, William 15 OCEAN DRILLING PROGRAM LEG 100 REPORT Geosciences Websites Summary: OCEAN DRILLING PROGRAM LEG 100...

  3. ateleia glazioviana leg: Topics by E-print Network

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

    & width...should resemble the size of recipient's leg Provancher, William 9 OCEAN DRILLING PROGRAM LEG 100 REPORT Geosciences Websites Summary: OCEAN DRILLING PROGRAM LEG 100...

  4. Coulomb string tension, asymptotic string tension, and the gluon chain

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

    Greensite, Jeff; Szczepaniak, Adam P.

    2015-02-01T23:59:59.000Z

    We compute, via numerical simulations, the non-perturbative Coulomb potential and position-space ghost propagator in pure SU(3) gauge theory in Coulomb gauge. We find that that the Coulomb potential scales nicely in accordance with asymptotic freedom, that the Coulomb potential is linear in the infrared, and that the Coulomb string tension is about four times larger than the asymptotic string tension. We explain how it is possible that the asymptotic string tension can be lower than the Coulomb string tension by a factor of four.

  5. OCEAN DRILLING PROGRAM LEG 113 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    . In total, DSDP Legs 28 (Hayes, Frakes, et al., 1975) and 35 (Hollister, Craddock, et al., 1976) included

  6. OCEAN DRILLING PROGRAM LEG 100 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 100 SCIENTIFIC PROSPECTUS SHAKEDOWN AND SEA TRIALS CRUISE Philip D. Rabinowitz Co-Chief Scientist, Leg 100 Ocean Drilling Program Texas A&M University College Station, TX 77843 William J. Merrell Co-Chief Scientist, Leg 100 Ocean Drilling Program Texas A&M University College Station

  7. OCEAN DRILLING PROGRAM LEG 100 REPORT

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 100 REPORT NORTHEASTERN GULF OF MEXICO Philip D Rabinowitz Co-Chief Scientist, Leg 100 Ocean Drilling Program Texas A&M University College Station, TX 77843 William J. Merrell Co-Chief Scientist, Leg 100 Ocean Drilling Program Texas A&M University College Station, TX 77843

  8. Surface Tension Tzong-Shyng Leu

    E-Print Network [OSTI]

    Leu, Tzong-Shyng "Jeremy"

    1 Fluidics Surface Tension Tzong-Shyng Leu IAA ­ Institute of Aeronautics and Astranautics surface tension. Cohesion and Surface Tension Molecular concept of origin of surface tension: Fluidics The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension

  9. OCEAN DRILLING PROGRAM LEG 179 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 179 SCIENTIFIC PROSPECTUS HAMMER DRILLING and NERO Dr. Jack Casey Chief.S.A. Tom Pettigrew Chief Engineer, Leg 179 Ocean Drilling Program Texas A&M University Research Park 1000 Drilling Program Texas A&M University Research Park 1000 Discovery Drive College Station, Texas 77845

  10. OCEAN DRILLING PROGRAM LEG 165 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 165 SCIENTIFIC PROSPECTUS CARIBBEAN OCEAN HISTORY AND THE CRETACEOUS Scientist, Leg 165 Ocean Drilling Program Texas A&M University Research Park 1000 Discovery Drive College of any portion requires the written consent of the Director, Ocean Drilling Program, Texas A&M University

  11. OCEAN DRILLING PROGRAM LEG 159 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 159 SCIENTIFIC PROSPECTUS THE COTE D'IVOIRE - GHANA TRANSFORM MARGIN, Leg 159 Ocean Drilling Program Texas A&M University Research Park 1000 Discovery Drive College Station requires the written consent of the Director, Ocean Drilling Program, Texas A&M University Research Park

  12. OCEAN DRILLING PROGRAM LEG 140 PRELIMINARY REPORT

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 140 PRELIMINARY REPORT HOLE 504B Dr. Henry Dick Dr. Jörg Erzinger Co Giessen Federal Republic of Germany Dr. Laura Stokking Staff Scientist, Leg 140 Ocean Drilling Program Copies of this publication may be obtained from the Director, Ocean Drilling Program, Texas A

  13. OCEAN DRILLING PROGRAM LEG 110 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 110 SCIENTIFIC PROSPECTUS LESSER ANTILLES FOREARC J. Casey Moore Staff Science Representative, Leg 110 Ocean Drilling Program Texas A&M University College Station, TX 77843-3469 Philip D. Direct* Ocean Drilling Program Robert B. Kidd Manager of Science Operations Ocean

  14. OCEAN DRILLING PROGRAM LEG 105 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 105 SCIENTIFIC PROSPECTUS LABRADOR SEA - BAFFIN BAY Dr. Michael A. Bradford Clement Staff Science Representative, Leg 105 Ocean Drilling Program Texas A & M University College Station, TX 77843-3469" Philip Director Ocean Drilling Program Robert B. Kidd Manager of Science

  15. LEG 142 PRELIMINARY REPORT OCEAN DRILLING PROGRAM

    E-Print Network [OSTI]

    LEG 142 PRELIMINARY REPORT OCEAN DRILLING PROGRAM ENGINEERING PRELIMINARY REPORT NO. 3 EAST PACIFIC RISE 1992 #12;OCEAN DRILLING PROGRAM LEG 142 PRELIMINARY REPORT East Pacific Rise Dr. Rodey Batiza Co 96822 Mr. Michael A. Storms Operations Superintendent/ Assistant Manager of Engineering and Drilling

  16. OCEAN DRILLING PROGRAM LEG 108 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 108 SCIENTIFIC PROSPECTUS NORTHWEST AFRICA Dr. William Ruddiman Co Federal Republic of Germany Dr. Jack G. Baldauf Staff Scientist, Leg 108 Ocean Drilling Program Texas A & M University College Station, Texas 77843-3469 Philip W Rabin Direct Ocean Drilling Program

  17. OCEAN DRILLING PROGRAM LEG 118 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 118 SCIENTIFIC PROSPECTUS FRACTURE ZONE DRILLING ON THE SOUTHWEST INDIAN Oceanographic Institution Woods Hole, MA 02543 Andrew C. Adamson Staff Scientist, Leg 118 Ocean Drilling Program the written consent of the Director, Ocean Drilling Program, Texas A&M University Research Park, 1000

  18. OCEAN DRILLING PROGRAM LEG 133 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    . Davies Dr. Judith A. McKenzie Co-Chief Scientist, Leg 133 Co-Chief Scientist, Leg 133 Bureau of Mineral Resources Geological Institute, ETH Geology & Geophysics Zentiem 8092 P. O. Box 378 Zurich Canberra, 2601 global sea-level change in the Late Cenozoic and, in particular, the Quaternary. 2. To define

  19. A quantitative, parametric model of musical tension

    E-Print Network [OSTI]

    Farbood, Morwaread Mary

    2006-01-01T23:59:59.000Z

    This thesis presents a quantitative, parametric model for describing musical tension. While the phenomenon of tension is evident to listeners, it is difficult to formalize due to its subjective and multi-dimensional nature. ...

  20. Small membranes under negative surface tension

    E-Print Network [OSTI]

    Avital, Yotam Y

    2015-01-01T23:59:59.000Z

    We use computer simulations and a simple free energy model to study the response of a bilayer membrane to the application of a negative (compressive) mechanical tension. Such a tension destabilizes the long wavelength undulation modes of giant vesicles, but it can be sustained when small membranes and vesicles are considered. Our negative tension simulation results reveal two regimes - (i) a weak negative tension regime characterized by stretching-dominated elasticity, and (ii) a strong negative tension regime featuring bending-dominated elastic behavior. This resembles the findings of the classic Evans and Rawicz micropipette aspiration experiment in giant unilamellar vesicles (GUVs) [Phys, Rev. Lett. {\\bf 64}, 2094 (1990)]. However, while in GUVs the crossover between the two elasticity regimes occurs at a small positive surface tension, in smaller membranes it takes place at a moderate negative tension. Another interesting observation concerning the response of a small membrane to negative surface tension ...

  1. OCEAN DRILLING PROGRAM LEG 172 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    Geologia, Universitá di Padova Via Giotto, 1 35137 Padova Italy Dr. Gary D. Acton Staff Scientist, Leg 172 The Blake-Bahama Outer Ridge (BBOR) and Carolina Slope (CS) form the western boundary for deep- and surface

  2. OCEAN DRILLING PROGRAM LEG 149 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    Committee and the Pollution Prevention and Safety Panel. #12;Leg 149 Scientific Prospectus Page 3 ABSTRACT western Iberia to determine the changes in the physical and petrological nature of the acoustic basement

  3. OCEAN DRILLING PROGRAM LEG 164 PRELIMINARY REPORT

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 164 PRELIMINARY REPORT GAS HYDRATE SAMPLING ON THE BLAKE RIDGE of Tokyo (Japan) National Science Foundation (United States) Natural Environment Research Council (United, Iceland, Italy, the Netherlands, Norway, Spain, Sweden, Switzerland, and Turkey) Any opinions, findings

  4. Surface and interfacial tensions of Hofmeister electrolytes

    E-Print Network [OSTI]

    Levin, Yan

    Surface and interfacial tensions of Hofmeister electrolytes Alexandre P. dos Santos and Yan Levin to account quantitatively for the surface and interfacial tensions of different electrolyte solutions can also be used to calculate the surface and the interfacial tensions of acid solutions, predicting

  5. Tensioning device for a stretched membrane collector

    DOE Patents [OSTI]

    Murphy, L.M.

    1984-01-01T23:59:59.000Z

    Disclosed is a solar concentrating collector comprising an elestic membrane member for concentrating sunlight, a frame for holding the membrane member in plane and in tension, and a tensioning means for varying the tension of the membrane member. The tensioning means is disposed at the frame and is adapted to releasably attach the membrane member thereto. The tensioning means is also adapted to uniformly and symmetrically subject the membrane member to stretching forces such that membrane stresses produced thereby are distributed uniformly over a thickness of the membrane member and reciprocal twisting moments are substantially prevented from acting about said frame.

  6. Anisotropic surface tension of buckled fluid membrane

    E-Print Network [OSTI]

    Hiroshi Noguchi

    2011-06-01T23:59:59.000Z

    Solid sheets and fluid membranes exhibit buckling under lateral compression. Here, it is revealed that fluid membranes have anisotropic buckling surface tension contrary to solid sheets. Surprisingly, the surface tension perpendicular to the buckling direction shows stronger dependence than that parallel to it. Our theoretical predictions are supported by numerical simulations of a meshless membrane model. This anisotropic tension can be used to measure the membrane bending rigidity. It is also found phase synchronization occurs between multilayered buckled membranes.

  7. On surface tension for compact stars

    E-Print Network [OSTI]

    R. Sharma; S. D. Maharaj

    2007-08-24T23:59:59.000Z

    In an earlier treatment it was demonstrated that general relativity gives higher values of surface tension in strange stars with quark matter than neutron stars.We generate the modified Tolman-Oppenheimer-Volkoff equation to incorporate anisotropic matter and use this to show that pressure anisotropy provides for a wide range of behaviour in the surface tension than is the case with isotropic pressures. In particular it is possible that anisotropy drastically decreases the value of the surface tension.

  8. Apparatus for tensioning a heliostat membrane

    DOE Patents [OSTI]

    Sallis, Daniel V. (P.O. Box 554, Littleton, CO 80120)

    1986-01-01T23:59:59.000Z

    An apparatus for pneumatically or hydraulically tensioning a membrane, which stretched membrane can support a reflective surface for use as a heliostat in a solar energy collection system.

  9. Genetic and expression analysis of enabled in Drosophila leg segmentation

    E-Print Network [OSTI]

    Ramel, Marie-Christine

    2001-01-01T23:59:59.000Z

    Drosophila leg segmentation is a process which is beginning to be understood. The Notch (N) signaling pathway has been identified as a key regulator of joint formation and segmental growth in Drosophila legs. In this context, four-jointed (fj...

  10. OCEAN DRILLING PROGRAM LEGS 143 AND 144 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    University of Tulsa Tulsa, Oklahoma 74104 Dr. Edward L. Winterer Co-Chief Scientist, Leg 143 Scripps

  11. OCEAN DRILLING PROGRAM LEG 132 ENGINEERING PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 132 ENGINEERING PROSPECTUS WESTERN AND CENTRAL PACIFIC Mr. Michael A. Storms Supervisor of Development Engineering Ocean Drilling Program Texas A & M University College Manager of Engineering and Drilling Operations ODP/TAMU Louis E. Garrison Deputy Director ODP

  12. OCEAN DRILLING PROGRAM LEG 205 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 205 SCIENTIFIC PROSPECTUS FLUID FLOW AND SUBDUCTION FLUXES ACROSS __________________ Dr. Jack Baldauf Deputy Director of Science Operations Ocean Drilling Program Texas A&M University Manager and Staff Scientist Ocean Drilling Program Texas A&M University 1000 Discovery Drive College

  13. OCEAN DRILLING PROGRAM LEG 202 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 202 SCIENTIFIC PROSPECTUS SOUTHEAST PACIFIC PALEOCEANOGRAPHIC TRANSECTS __________________ Dr. Jack Baldauf Deputy Director of Science Operations Ocean Drilling Program Texas A&M University Manager and Staff Scientist Ocean Drilling Program Texas A&M University 1000 Discovery Drive College

  14. OCEAN DRILLING PROGRAM LEG 195 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 195 SCIENTIFIC PROSPECTUS MARIANA CONVERGENT MARGIN/ WEST PHILIPPINE SEA Baldauf Deputy Director of Science Operations Ocean Drilling Program Texas A&M University 1000 Discovery and Staff Scientist Ocean Drilling Program Texas A&M University 1000 Discovery Drive College Station TX

  15. OCEAN DRILLING PROGRAM LEG 185 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 185 SCIENTIFIC PROSPECTUS IZU-MARIANA MARGIN Dr. Terry Plank Co France Dr. Carlota Escutia Staff Scientist Ocean Drilling Program Texas A&M University Research Park 1000 the written consent of the Director, Ocean Drilling Program, Texas A&M University Research Park, 1000

  16. OCEAN DRILLING PROGRAM LEG 132 PRELIMINARY REPORT

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 132 PRELIMINARY REPORT ENGINEERING II: WESTERN AND CENTRAL PACIFIC Mr. Michael A. Storms Supervisor of Development Engineering Ocean Drilling Program Texas A&M University and Drilling Operations ODP/TAMU Timothy J.G. Francis Deputy Director ODP/TAMU September 1990 #12;This informal

  17. OCEAN DRILLING PROGRAM LEG 200 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 200 SCIENTIFIC PROSPECTUS DRILLING AT THE H2O LONG-TERM SEAFLOOR Director of Science Operations Ocean Drilling Program Texas A&M University 1000 Discovery Drive College Ocean Drilling Program Texas A&M University 1000 Discovery Drive College Station TX 77845-9547 USA

  18. OCEAN DRILLING PROGRAM LEG 104 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 104 SCIENTIFIC PROSPECTUS NORWEGIAN SEA Olav Eldholm Co-Chief Scientist Ocean Drilling Program Texas A & M University College Station, Texas 77843-3469 Pni±ip o Rabinowitz Director Ocean Drilling Program Robert B Kidd Manager of Science Operations Ocean Drilling Program Louis E

  19. OCEAN DRILLING PROGRAM LEG 191 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 191 SCIENTIFIC PROSPECTUS NORTHWEST PACIFIC SEISMIC OBSERVATORY AND HAMMER DRILL ENGINEERING TESTS Dr. Toshihiko Kanazawa Co-Chief Scientist Earthquake Research Institute Director of Science Operations Ocean Drilling Program Texas A&M University 1000 Discovery Drive College

  20. OCEAN DRILLING PROGRAM LEG 199 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 199 SCIENTIFIC PROSPECTUS PALEOGENE EQUATORIAL TRANSECT Dr. Mitchell __________________ Dr. Jack Baldauf Deputy Director of Science Operations Ocean Drilling Program Texas A&M University Project Manager and Staff Scientist Ocean Drilling Program Texas A&M University 1000 Discovery Drive

  1. OCEAN DRILLING PROGRAM LEG 196 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 196 SCIENTIFIC PROSPECTUS LOGGING WHILE DRILLING AND ADVANCED CORKS Deputy Director of Science Operations Ocean Drilling Program Texas A&M University 1000 Discovery Drive Scientist Ocean Drilling Program Texas A&M University 1000 Discovery Drive College Station TX 77845-9547 USA

  2. OCEAN DRILLING PROGRAM LEG 192 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 192 SCIENTIFIC PROSPECTUS BASEMENT DRILLING OF THE ONTONG JAVA PLATEAU of Science Operations Ocean Drilling Program Texas A&M University 1000 Discovery Drive College Station, TX Drilling Program Texas A&M University 1000 Discovery Drive College Station, TX 77845-9547 U.S.A. May 2000

  3. OCEAN DRILLING PROGRAM LEG 120 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 120 SCIENTIFIC PROSPECTUS CENTRAL KERGUELEN PLATEAU Dr. Roland Schlich Drilling Program Texas A&M University College Station, TX 77841 Philip D.VRabinowitz Director ^^~-- ODP of the Director, Ocean Drilling Program, Texas A&M University Research Park, 1000 Discovery Drive, College Station

  4. OCEAN DRILLING PROGRAM LEG 106 PRELIMINARY REPORT

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 106 PRELIMINARY REPORT BARE ROCK DRILLING IN THE MID-ATLANTIC RIDGE RIFT 106 Ocean Drilling Program Texas A & M University College Station, TX 77843-3469 ±nuwiLZ" ector ODP Drilling Program, Texas A & M University, College Station, Texas 77843-3469. In some cases, orders

  5. OCEAN DRILLING PROGRAM LEG 109 PRELIMINARY REPORT

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 109 PRELIMINARY REPORT BARE ROCK DRILLING IN THE MID-ATLANTIC RIDGE RIFT 109 Ocean Drilling Program Texas A & M University College Station, TX 77843-3469 Philip D. Rabinowitz Director Ocean Drilling Program Robert B. Kidd Manager of Science Operations Ocean Drilling Program Louis E

  6. OCEAN DRILLING PROGRAM LEG 144 PRELIMINARY REPORT

    E-Print Network [OSTI]

    . Haggerty Co-Chief Scientist, Leg 144 Department of Geosciences University of Tulsa Tulsa, Oklahoma 74104 Dr of the Ocean Drilling Program: Janet A. Haggerty, Co-Chief Scientist (Research Office, University of Tulsa, Tulsa, Oklahoma 74104) Isabella Premoli Silva, Co-Chief Scientist (Departimento di Scienze della Terra

  7. OCEAN DRILLING PROGRAM LEG 106 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    designed bare rock guide base and use new drilling technology. The drillship JOIDES Resolution is scheduledOCEAN DRILLING PROGRAM LEG 106 SCIENTIFIC PROSPECTUS BARE ROCK DRILLING IN THE KANE FRACTURE ZONE Drilling Program Texas A & M University College Station, TX 77843-3469

  8. OCEAN DRILLING PROGRAM LEG 180 PRELIMINARY REPORT

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 180 PRELIMINARY REPORT ACTIVE CONTINENTAL EXTENSION IN THE WESTERN WOODLARK BASIN, PAPUA NEW GUINEA Dr. Philippe Huchon CNRS, Laboratoire de Géologie �cole Normale Supérieure and Technology University of Hawaii at Manoa 2525 Correa Road Honolulu, HI 96822-2285 U.S.A. Dr. Adam Klaus Ocean

  9. OCEAN DRILLING PROGRAM LEG 111 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    under the international Ocean Drilling Program which is managed by Joint Oceanographic Institutions, Inc by the following agencies: Department of Energy, Mines and Resources (Canada) Deutsche ForschungsgemeinschaftOCEAN DRILLING PROGRAM LEG 111 SCIENTIFIC PROSPECTUS DSDP HOLE 504B REVISITED Keir Becker

  10. Description and Drawings of the Human Leg

    E-Print Network [OSTI]

    Bigger, John Dinsmore

    1909-01-01T23:59:59.000Z

    Desoription and drawings of the human l e g . Description and Drawings of The Human Leg. John Bigger 1909. The Human Leg. The purpose of t h i s work i s to enable one to o b t a i n a more v i v i d and l a s t i n g idea of the r e l a t i o n... of the hones, muscles, "blood v e s s e l s , and nerves of the human l e g . To accomplish t h i s we took the r i g h t l e g of a-negro man and made twenty t h r u cross s e c t i o n s c o u n t i n g those of the f o o t . The l e g had "been p i c k l...

  11. Energy Efficient Legged Robotics at Sandia Labs

    SciTech Connect (OSTI)

    Buerger, Steve

    2014-12-16T23:59:59.000Z

    Sandia is developing energy efficient actuation and drive train technologies to dramatically improve the charge life of legged robots. The work is supported by DARPA, and Sandia will demonstrate an energy efficient bipedal robot at the technology exposition section of the DARPA Robotics Challenge Finals in June, 2015. This video, the first in a series, describes early development and initial integration of the Sandia Transmission Efficient Prototype Promoting Research (STEPPR) robot.

  12. Managing Tensions In A Globalizing Environment 

    E-Print Network [OSTI]

    Shoemaker, Martha McArdell

    2010-10-12T23:59:59.000Z

    Globalizing processes often place the social cohesion of organizations at risk when multinational people experience and exhibit tensions from their diverse cultural and language norms. This study uses discourse analysis and dialectical theory...

  13. Verification of a simplified method to evaluate the capacities of template-type platforms

    SciTech Connect (OSTI)

    Bea, R.G.; Mortazavi, M.M.; Loch, K.J.; Young, P.L. [Univ. of California, Berkeley, CA (United States). Dept. of Civil Engineering

    1995-12-01T23:59:59.000Z

    This paper summarizes development of simplified procedures to evaluate storm loadings imposed on template-type platforms and to evaluate the ultimate limit state lateral loading capacities of such platforms. Verification of these procedures has been accomplished by comparing results from the simplified analyses with results from three dimensional, linear and nonlinear analyses of a variety of template-type platforms. Good agreement between results from the two types of analyses has been developed for the evaluations of both loadings and capacities. The verification platforms have included four-leg well protector and quarters structures and eight-leg drilling and production Gulf of Mexico structures that employed a variety of types of bracing patterns and joints. Several of these structures were subjected to intense hurricane storm loadings during hurricanes Andrew, Carmen, and Frederic. Within the population of verification platforms are several that failed or were very near failure. The simplified loading and capacity analyses are able to replicate the observed performance of these platforms. Realistic simulation of the brace joints and foundation capacity characteristics are critical aspects of these analyses. There is a reasonable degree of verification of the simplified methods with the observed performance of platforms in the field during intense hurricane storm loadings. These methods can be used to help screen platforms that are being evaluated for extended service. In addition, the results from these analyses can be used to help verify results from complex analytical models that are intended to determine the ultimate limit state loading capacities of platforms. Lastly, and perhaps most importantly this approach can be used in the preliminary design of new platforms.

  14. Reassessment of offshore platforms

    SciTech Connect (OSTI)

    Nair, V.V.D.; Kuhn, J.M. (Mobil Research and Development Corporation, Dallas, TX (United States))

    1993-05-01T23:59:59.000Z

    Data from Hurricane Andrew demonstrated that the systems and procedures in place for evacuating offshore workers and minimizing oil spills and environmental damage functioned as planned. While the vast majority of the platforms survived the storm with no damage, a few of the older platforms (installed prior to 1972) either collapsed or suffered severe damage. The collapsed platforms were designed with insufficient deck height to clear the storm waves. In recent years, the API RP 2A has introduced guidance for minimum air gap, minimum structures, platform inspection and platform reuse. These provisions, coupled with natural attribution of the older platforms, will significantly improve the performance of platforms in the future. The reliability of NDT techniques to detect major structural defects should be improved through continued research. While flooded member detection is used by several operators as a screening tool to detect major defects underwater, its reliability is not always good and further research is needed in this area. Another area of high priority research is related to the use of Remotely Operated Vehicles (ROV) to perform underwater inspection of structures. 51 refs., 7 figs.

  15. Ladder attachment platform

    DOE Patents [OSTI]

    Swygert,; Richard, W [Springfield, SC

    2012-08-28T23:59:59.000Z

    A ladder attachment platform is provided that includes a base for attachment to a ladder that has first and second side rails and a plurality of rungs that extend between in a lateral direction. Also included is a user platform for having a user stand thereon that is carried by the base. The user platform may be positioned with respect to the ladder so that it is not located between a first plane that extends through the first side rail and is perpendicular to the lateral direction and a second plane that extends through the second side rail and is perpendicular to the lateral direction.

  16. PHEV Development Platform

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

    mild hybrid platform with 75kW rear drive system and 10kWhr li- i b ion battery. * Rear electric drive system is modular such that other comparable drive motors can be evaluated...

  17. Hull/Mooring/Riser coupled motion simulations of thruster-assisted moored platforms

    E-Print Network [OSTI]

    Ryu, Sangsoo

    2005-02-17T23:59:59.000Z

    responses. Investigation of the performance of thruster-assisted moored offshore platforms was conducted in terms of six-degree-of-freedom motions and mooring line/riser top tensions by means of a fully coupled hull/mooring/riser dynamic analysis program...

  18. A Data-Parallel Algorithmic Modelica Extension for Efficient Execution on Multi-Core Platforms

    E-Print Network [OSTI]

    Zhao, Yuxiao

    A Data-Parallel Algorithmic Modelica Extension for Efficient Execution on Multi-Core Platforms-prone. To make the computational power of new multi-core architectures more easily available to Modelica modelers, we have developed the ParModelica algorithmic language ex- tension to the high-level Modelica

  19. Agent-based Simulation Platforms Agent-based Simulation Platforms

    E-Print Network [OSTI]

    Boone, Randall B.

    Agent-based Simulation Platforms Agent-based Simulation Platforms: Review and Development 1081 Fritz Ave. McKinleyville, CA 95519, USA Five software platforms for scientific agent-based models (ABMs) were reviewed by implementing example models in each. NetLogo is the highest-level platform

  20. Surface tension in a reactive binary mixture of incompressible fluids

    E-Print Network [OSTI]

    Struchtrup, Henning

    Surface tension in a reactive binary mixture of incompressible fluids Henning Struchtrup Institute with a distributed form of surface tension. The model describes chemistry, diffusion, viscosity and heat transfer tension at the front. Keywords: Binary mixtures, Surface tension, Irreversible thermodynamics, Hele

  1. ccsd00004127, ON THE SURFACE TENSIONS OF BINARY MIXTURES

    E-Print Network [OSTI]

    ccsd­00004127, version 1 ­ 2 Feb 2005 ON THE SURFACE TENSIONS OF BINARY MIXTURES JEAN RUIZ Abstract tensions and the concentrations are brie y reviewed. Key Words: Surface tensions, binary mixtures the corresponding surface tension depends on the composition of the mixture. Some relationship is expected which

  2. Curvature Dependency of Surface Tension in Multicomponent Systems

    E-Print Network [OSTI]

    Firoozabadi, Abbas

    Curvature Dependency of Surface Tension in Multicomponent Systems Erik Santiso Dept. of Chemical InterScience (www.interscience.wiley.com). The effect of curvature on the surface tension of droplets for multicomponent systems, the relation between the surface tension at the surface of tension and the distance

  3. ccsd00004106, ON THE STATISTICAL MECHANICS AND SURFACE TENSIONS

    E-Print Network [OSTI]

    ccsd­00004106, version 1 ­ 31 Jan 2005 ON THE STATISTICAL MECHANICS AND SURFACE TENSIONS OF BINARY the surface tension of the mixture and the concentrations. Key words: Surface tensions, binary mixtures.Ruiz@cpt.univ-mrs.fr #12; 2 J. DE CONINCK, S. MIRACLE#21;SOL�, AND J. RUIZ 1. Introduction The notion of surface tension

  4. Surface Energy,Surface Energy, Surface Tension & Shape of CrystalsSurface Tension & Shape of Crystals

    E-Print Network [OSTI]

    Subramaniam, Anandh

    Surface Energy,Surface Energy, Surface Tension & Shape of CrystalsSurface Tension & Shape of shapes of crystals are important: (i) growth shape and (ii) equilibrium shape Surface/interface energy surfaces. The joining of two phases creates an interface. (Two orientations of the same crystalline phase

  5. Effect of Contact Line Curvature on Solid-Fluid Surface Tensions Without Line Tension C. A. Ward* and Jiyu Wu

    E-Print Network [OSTI]

    Ward, Charles A.

    Effect of Contact Line Curvature on Solid-Fluid Surface Tensions Without Line Tension C. A. Ward neglected adsorption at the solid-liquid interface and its effect on the surface tension of this interface-liquid interface can be determined, as can the surface tensions of the solid-liquid and solid-vapor interfaces. DOI

  6. On Relation Between the Quark Gluon Bag Surface Tension and the Colour Tube String Tension

    E-Print Network [OSTI]

    K. A. Bugaev; G. M. Zinovjev

    2010-05-17T23:59:59.000Z

    Here we revisit the bag phenomenology of the deconfining phase transition to replenish it by introducing systematically the bag surface tension. Comparing the free energy of such bags and that one of the strings confining the static quark-antiquark pair, we express the string tension in terms of the bag surface tension and thermal pressure in order to estimate the bag characteristics using the lattice QCD data. Our analysis of the bag entropy density demonstrates that the surface tension coefficient is amazingly negative at the cross-over (continuous transition). This approach allows us to naturally account for an appearance of a very pronounced maximum (observed in the lattice QCD simulations) of the entropy of the bound static quark-antiquark pair. The vicinity of the (tri)critical endpoint is also analyzed to clarify the meaning of vanishing surface tension coefficient.

  7. Low Tension Strings on a Cosmological Singularity

    E-Print Network [OSTI]

    Ben Craps; Chethan Krishnan; Ayush Saurabh

    2014-09-21T23:59:59.000Z

    It has recently been argued that the singularity of the Milne orbifold can be resolved in higher spin theories. In string theory scattering amplitudes, however, the Milne singularity gives rise to ultraviolet divergences that signal uncontrolled backreaction. Since string theory in the low tension limit is expected to be a higher spin theory (although precise proposals only exist in special cases), we investigate what happens to these scattering amplitudes in the low tension limit. We point out that the known problematic ultraviolet divergences disappear in this limit. In addition we systematically identify all divergences of the simplest 2-to-2 string scattering amplitude on the Milne orbifold, and argue that the divergences that survive in the low tension limit have sensible infrared interpretations.

  8. OCEAN DRILLING PROGRAM LEG 171A SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 171A SCIENTIFIC PROSPECTUS BARBADOS ACCRETIONARY PRISM LOGGING WHILE DRILLING (LWD) Dr. J. Casey Moore Co-Chief Scientist, Leg 171A University of California, Santa Cruz Earth Drilling Program Texas A&M University Research Park 1000 Discovery Drive College Station, Texas 77845

  9. A RESISTIVE FORCE MODEL FOR LEGGED LOCOMOTION ON GRANULAR MEDIA*

    E-Print Network [OSTI]

    Goodisman, Michael

    on granular surfaces like sand and gravel. Understanding the mechanics of legged locomotion on granular media and kinematics, e.g., a bio-inspired robot L-leg rotated through uniform granular media (loosely packed ~ 1 mm including insects, lizards, and mammals encounter granular surfaces like sand and gravel in their natural

  10. Transactional Network Platform: Applications

    SciTech Connect (OSTI)

    Katipamula, Srinivas; Lutes, Robert G.; Ngo, Hung; Underhill, Ronald M.

    2013-10-31T23:59:59.000Z

    In FY13, Pacific Northwest National Laboratory (PNNL) with funding from the Department of Energy’s (DOE’s) Building Technologies Office (BTO) designed, prototyped and tested a transactional network platform to support energy, operational and financial transactions between any networked entities (equipment, organizations, buildings, grid, etc.). Initially, in FY13, the concept demonstrated transactions between packaged rooftop air conditioners and heat pump units (RTUs) and the electric grid using applications or "agents" that reside on the platform, on the equipment, on a local building controller or in the Cloud. The transactional network project is a multi-lab effort with Oakridge National Laboratory (ORNL) and Lawrence Berkeley National Laboratory (LBNL) also contributing to the effort. PNNL coordinated the project and also was responsible for the development of the transactional network (TN) platform and three different applications associated with RTUs. This document describes two applications or "agents" in details, and also summarizes the platform. The TN platform details are described in another companion document.

  11. Manipulator mounted transfer platform

    DOE Patents [OSTI]

    Dobbins, James C. (Idaho Falls, ID); Hoover, Mark A. (Idaho Falls, ID); May, Kay W. (Idaho Falls, ID); Ross, Maurice J. (Pocatello, ID)

    1990-01-01T23:59:59.000Z

    A transfer platform for the conveyance of objects by a manipulator includes a bed frame and saddle clamp secured along an edge of the bed frame and adapted so as to secure the bed frame to a horizontal crosspiece of the manipulator. The platform may thus move with the manipulator in a reciprocal linear path defined by a guide rail. A bed insert may be provided for the support of conveyed objects and a lifting bail may be provided to permit the manipulator arm to install the bed frame upon the crosspiece under remote control.

  12. Service platform strategy : social networking and mobile service platform perspectives

    E-Print Network [OSTI]

    Yoo, Jang Hoon, S.M. Massachusetts Institute of Technology

    2011-01-01T23:59:59.000Z

    The significance of the service platform is increasing, while studies on this phenomenon remain scarce and insufficient. Most of the researches focus on products, market segmentation and how platform triggers innovation ...

  13. The Surface Tension of Magnetized Quark Matter

    E-Print Network [OSTI]

    A. F. Garcia; M. B. Pinto

    2013-06-13T23:59:59.000Z

    The surface tension of quark matter plays a crucial role for the possibility of quark matter nucleation during the formation of compact stellar objects and also for the existence of a mixed phase within hybrid stars. However, despite its importance, this quantity does not have a well established numerical value. Some early estimates have predicted that, at zero temperature, the value falls within the wide range $\\gamma_0\\approx10-300{\\rm\\ MeV/fm^2}$ but, very recently, different model applications have reduced these numerical values to fall within the range $\\gamma_0\\approx5-30{\\rm\\ MeV/fm^2}$ which would favor the phase conversion process as well as the appearance of a mixed phase in hybrid stars. In magnetars one should also account for the presence of very high magnetic fields which may reach up to about $ eB\\approx 3-30\\, m_\\pi^2$ ($B \\approx 10^{19}-10^{20} \\,G$) at the core of the star so that it may also be important to analyze how the presence of a magnetic field affects the surface tension. With this aim we consider magnetized two flavor quark matter, described by the Nambu--Jona-Lasinio model. We show that although the surface tension oscillates around its B=0 value, when $0 surface tension value drops by about 30% while for $eB \\gtrsim 10\\, m_\\pi^2$ it quickly raises with the field intensity so that the phase conversion and the presence of a mixed phase should be suppressed if extremely high fields are present. We also investigate how thermal effects influence the surface tension for magnetized quark matter.

  14. Transitions of tethered chain molecules under tension

    E-Print Network [OSTI]

    Jutta Luettmer-Strathmann; Kurt Binder

    2014-09-09T23:59:59.000Z

    An applied tension force changes the equilibrium conformations of a polymer chain tethered to a planar substrate and thus affects the adsorption transition as well as the coil-globule and crystallization transitions. Conversely, solvent quality and surface attraction are reflected in equilibrium force-extension curves that can be measured in experiments. To investigate these effects theoretically, we study tethered chains under tension with Wang-Landau simulations of a bond-fluctuation lattice model. Applying our model to pulling experiments on biological molecules we obtain a good description of experimental data in the intermediate force range, where universal features dominate and finite size effects are small. For tethered chains in poor solvent, we observe the predicted two-phase coexistence at transitions from the globule to stretched conformations and also discover direct transitions from crystalline to stretched conformations. A phase portrait for finite chains constructed by evaluating the density of states for a broad range of solvent conditions and tensions shows how increasing tension leads to a disappearance of the globular phase. For chains in good solvents tethered to hard and attractive surfaces we find the predicted scaling with the chain length in the low-force regime and show that our results are well described by an analytical, independent-bond approximation for the bond-fluctuation model for the highest tensions. Finally, for a hard or slightly attractive surface the stretching of a tethered chain is a conformational change that does not correspond to a phase transition. However, when the surface attraction is sufficient to adsorb a chain it will undergo a desorption transition at a critical value of the applied force. Our results for force-induced desorption show the transition to be discontinuous with partially desorbed conformations in the coexistence region.

  15. Mobility platform coupling device and method for coupling mobility platforms

    DOE Patents [OSTI]

    Shirey, David L. (Albuquerque, NM); Hayward, David R. (Albuquerque, NM); Buttz, James H. (Albuquerque, NM)

    2002-01-01T23:59:59.000Z

    A coupling device for connecting a first mobility platform to a second mobility platform in tandem. An example mobility platform is a robot. The coupling device has a loose link mode for normal steering conditions and a locking position, tight link mode for navigation across difficult terrain and across obstacles, for traversing chasms, and for navigating with a reduced footprint in tight steering conditions.

  16. PLATFORMS FOR THE DESIGN OF PLATFORMS: COLLABORATING IN THE UNKNOWN

    E-Print Network [OSTI]

    Boyer, Edmond

    - such as `smart grids', home networking or new bio-materials - are currently looking for platforms to help them Gawer for fruitful discussions on Platform design and to the participants of the Platforms, Markets, the architecture of industry is tending to loosen or even disappear: `smart grids' in electricity supply, bio

  17. Lecture Ch. 5a Surface tension (Kelvin effect)

    E-Print Network [OSTI]

    Russell, Lynn

    1 Lecture Ch. 5a · Surface tension (Kelvin effect) ­ Hygroscopic growth (subsaturated humidity: · Expansion against pressure difference Surface Tension · By definition · By 1st Law (modified for surface) ­ Saturation · Chemical potential (Raoult effect) · Nucleation ­ Competition between surface and chemical

  18. SPHERICALLY-ACTUATED PLATFORM MANIPULATOR

    E-Print Network [OSTI]

    Williams II, Robert L.

    1 SPHERICALLY-ACTUATED PLATFORM MANIPULATOR Robert L. Williams II Dana B. Poling Ohio University://www.ent.ohiou.edu/~bobw #12;2 SPHERICALLY-ACTUATED PLATFORM MANIPULATOR Robert L. Williams II and Dana B. Poling Ohio University Athens, OH 45701 KEYWORDS: Spherical Actuation, Platform Manipulator, Parallel Robot ABSTRACT

  19. MEASUREMENT OF INTERFACIAL TENSION IN FLUID-FLUID SYSTEMS

    E-Print Network [OSTI]

    Loh, Watson

    MEASUREMENT OF INTERFACIAL TENSION IN FLUID-FLUID SYSTEMS J. Drelich Ch. Fang C.L. White Michigan been used to measure interfacial tensions between immisci- ble fluid phases. A recent monograph sources of information on the in- terfacial tension measurement methods include selected chapters in Refs

  20. THE EFFECT OF SURFACE TENSION IN MODELING INTERFACIAL FRACTURE

    E-Print Network [OSTI]

    THE EFFECT OF SURFACE TENSION IN MODELING INTERFACIAL FRACTURE By Tsvetanka Sendova and Jay R: 612-626-7370 URL: http://www.ima.umn.edu #12;The Effect of Surface Tension in Modeling Interfacial. The proposed model of bi-material crack ascribes curvature-dependent surface tension to both the fracture

  1. A new implicit surface tension implementation for interfacial flows

    E-Print Network [OSTI]

    Frey, Pascal

    A new implicit surface tension implementation for interfacial flows S. Hysing Abstract A new implementation of surface tension effects in interfacial flow codes is proposed which is both fully implicit, which is used to regularize the discon- tinuous surface tension force term. The regularization can

  2. Versatile Surface Tension and Adhesion for SPH Fluids Nadir Akinci

    E-Print Network [OSTI]

    Teschner, Matthias

    Versatile Surface Tension and Adhesion for SPH Fluids Nadir Akinci University of Freiburg Gizem as a result of the impact of a water droplet into a filled container. Our surface tension force allows such as surface tension and adhesion emerge as a result of inter-molecular forces in a microscopic scale

  3. Accepted Manuscript Variational formulations for surface tension, capillarity and wetting

    E-Print Network [OSTI]

    Frey, Pascal

    Accepted Manuscript Variational formulations for surface tension, capillarity and wetting Gustavo C formulations for surface tension, capillarity and wetting, Comput. Methods Appl. Mech. Engrg. (2011), doi: 10 formulations for surface tension, capillarity and wetting Gustavo C. Buscagliaa,b, , Roberto F. Ausasa,b a

  4. Diuse interface surface tension models in an expanding ow

    E-Print Network [OSTI]

    Soatto, Stefano

    Diuse interface surface tension models in an expanding ow Wangyi Liu, Andrea L. Bertozzi , and Theodore Kolokolnikov November 22, 2010 Abstract We consider a diusive interface surface tension model principle. 1 Background There is a need to develop simple computational models for surface tension

  5. A MOLECULAR THEORY OF SURFACE TENSION IN NEMATIC LIQUID CRYSTALS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1187 A MOLECULAR THEORY OF SURFACE TENSION IN NEMATIC LIQUID CRYSTALS J. D. PARSONS Departamento de 1976, accepte le 10 mai 1976) Résumé. - On calcule la tension superficielle à la surface libre d le plan de la surface; b) il y a un saut de la tension de surface à la transition nématique

  6. Quantification of surface tension and internal pressure generated by single

    E-Print Network [OSTI]

    Jülicher, Frank

    Quantification of surface tension and internal pressure generated by single mitotic cells Elisabeth of a liquid cell interior, the surface tension is related to the local curvature and the hydrostatic pressure measured confined cell shapes to shapes obeying Laplace's law with uniform surface tension and find

  7. Common tester platform concept.

    SciTech Connect (OSTI)

    Hurst, Michael James

    2008-05-01T23:59:59.000Z

    This report summarizes the results of a case study on the doctrine of a common tester platform, a concept of a standardized platform that can be applicable across the broad spectrum of testing requirements throughout the various stages of a weapons program, as well as across the various weapons programs. The common tester concept strives to define an affordable, next-generation design that will meet testing requirements with the flexibility to grow and expand; supporting the initial development stages of a weapons program through to the final production and surveillance stages. This report discusses a concept investing key leveraging technologies and operational concepts combined with prototype tester-development experiences and practical lessons learned gleaned from past weapons programs.

  8. Surface Tension and the Cosmological Constant

    E-Print Network [OSTI]

    Joseph Samuel; Supurna Sinha

    2006-04-18T23:59:59.000Z

    The astronomically observed value of the cosmological constant is small but non-zero. This raises two questions together known as the cosmological constant problem a) why is lambda so nearly zero? b) why is lambda not EXACTLY zero? Sorkin has proposed that b) can be naturally explained as a one by square root N fluctuation by invoking discreteness of spacetime at the Planck scale due to quantum gravity. In this paper we shed light on these questions by developing an analogy between the cosmological constant and the surface tension of membranes. The ``cosmological constant problem'' has a natural analogue in the membrane context: the vanishingly small surface tension of fluid membranes provides an example where question a) above arises and is answered. We go on to find a direct analogue of Sorkin's proposal for answering question b) in the membrane context, where the discreteness of spacetime translates into the molecular structure of matter. We propose analogue experiments to probe a small and fluctuating surface tension in fluid membranes. A counterpart of dimensional reduction a la Kaluza-Klein and large extra dimensions also appears in the physics of fluid membranes.

  9. Oxygen Tension Modulates Neurite Outgrowth in PC12 Cells Through A Mechanism Involving HIF and VEGF

    E-Print Network [OSTI]

    Genetos, Damian C.; Cheung, Whitney K.; Decaris, Martin L.; Leach, J. Kent

    2010-01-01T23:59:59.000Z

    neural repair. Keywords Oxygen tension . Neurite extension .respective physiological oxygen microenvironments (Chen etet al. 2008). For example, oxygen tension differentially

  10. A tunable hemispherical platform for non-stretching curved flexible electronics and optoelectronics

    SciTech Connect (OSTI)

    Zhuang, Jinda; Ju, Y. Sungtaek, E-mail: just@seas.ucla.edu [Mechanical and Aerospace Engineering Department, University of California, 420 Westwood Plaza, Los Angeles, California 90095 (United States)

    2014-07-28T23:59:59.000Z

    One major challenge in incorporating flexible electronics or optoelectronics on curved surfaces is the requirement of significant stretchability. We report a tunable platform for incorporating flexible and yet non-stretching device layers on a hemisphere. In this configuration, an array of planar petals contractively maps onto the surface of an inflatable hemisphere through elastocapillary interactions mediated by an interface liquid. A mechanical model is developed to elucidate the dependence of the conformality of the petal structures on their elastic modulus and thickness and the liquid surface tension. The modeling results are validated against experimental results obtained using petal structures of different thicknesses, restoring elastic spring elements of different spring constants, and liquids with different surface tension coefficients. Our platform will enable facile integration of non-stretching electronic and optoelectronic components prepared using established planar fabrication techniques on tunable hemispherical surfaces.

  11. Spectral analysis of slender tensioned cylinder interaction

    E-Print Network [OSTI]

    Diao, Weiguo

    1998-01-01T23:59:59.000Z

    the coefficient k, and c, are constants: Case I The Duffing nonlinear system is defined by p(u, u, t) =k, u'(t) Case 2 The Van der Pol nonlinear system is defined by (60) p(u, u, t)= ? ? u (t)= c, u (t)u(t) c, c 3 Ct (6l) Case 3 The combined Duffing-Van der... models, the Duffing model, the Van Der Pol model and a combination model will be examined using the test data obtained in the study by Rijken (1997). By developing a better understanding of the interactive behavior between two tensioned tandem...

  12. Spectral analysis of slender tensioned cylinder interaction 

    E-Print Network [OSTI]

    Diao, Weiguo

    1998-01-01T23:59:59.000Z

    the coefficient k, and c, are constants: Case I The Duffing nonlinear system is defined by p(u, u, t) =k, u'(t) Case 2 The Van der Pol nonlinear system is defined by (60) p(u, u, t)= ? ? u (t)= c, u (t)u(t) c, c 3 Ct (6l) Case 3 The combined Duffing-Van der... models, the Duffing model, the Van Der Pol model and a combination model will be examined using the test data obtained in the study by Rijken (1997). By developing a better understanding of the interactive behavior between two tensioned tandem...

  13. Platform Markets and Energy Services

    E-Print Network [OSTI]

    Weiller, Claire M.; Pollitt, Michael G.

    2014-01-07T23:59:59.000Z

    use their platform, and vice versa. Same-side externalities, which have also been referred to as “intraplatform competition” (Armstrong 2006) occur when users on one side of the platform are affected by other users from the same side, often... negative prices, i.e. is compensated for using the platform (e.g. nightclubs or dating websites). For example, nightclubs or online dating websites may subsidise women by offering free entry or drinks to attract more male customers. The existence of two...

  14. Model test of wave forces on a structurally dense jacket platform

    SciTech Connect (OSTI)

    Gu, G.Z.; Parsley, M.A.; Berek, E.P.; Calvo, J.J.; Johnson, R.C.; Petruska, D.J. [Mobil Technology Co., Dallas, TX (United States)

    1996-12-31T23:59:59.000Z

    In the Gulf of Mexico, there are a significant number of jacket platforms built in the 1950`s and 60`s which are still in operation. Typically, these platforms have a large number of closely spaced legs and densely arranged bracing members. Since most of these platforms are beyond their design lives but the reservoirs are still producing, their safety, serviceability and fitness-for-purpose must be re-assessed in order to continue producing from them. During Mobil`s in-house re-qualification effort, it was found that the predictions by structural analysis programs (such as SACS and KARMA) were inconsistent with the platform inspection results. The programs predicted a large number of joint can failures during design storms (such as hurricane Andrew), but underwater inspections indicated only few failures had actually occurred. It was apparent that the procedure used for the assessment was conservative--either the wave loads the platforms experienced during the hurricanes were overestimated and/or the structural resistances were underestimated. This paper addresses the wave load issue. To calibrate the force algorithms typically used in structural analysis programs, a model test of a typical aging jacket platform was conducted in the wave basin.

  15. Quark-Gluon Bags with Surface Tension

    E-Print Network [OSTI]

    Kyrill Bugaev

    2007-03-20T23:59:59.000Z

    The temperature and chemical potential dependent surface tension of bags is introduced into the gas of quark-gluon bags model. This resolves a long standing problem of a unified description of the first and second order phase transition with the cross-over. Such an approach is necessary to model the complicated properties of quark-gluon plasma and hadronic matter from the first principles of statistical mechanics. The suggested model has an exact analytical solution and allows one to rigorously study the vicinity of the critical endpoint of the deconfinement phase transition. The existence of higher order phase transitions at the critical endpoint is discussed. In addition, we found that at the curve of a zero surface tension coefficient there must exist the surface induced phase tranition of the 2$^{nd}$ or higher order, which separates the pure quark gluon plasma (QGP) from the cross-over states, that are the mixed states of hadrons and QGP bags. Thus, the present model predicts that the critical endpoint of quantum chromodynamics is the tricritical endpoint.

  16. Platform-independent modelling in MDA: supporting abstract platforms

    E-Print Network [OSTI]

    Pires, Luís Ferreira

    Platform-independent modelling in MDA: supporting abstract platforms João Paulo Almeida, Remco { almeida, dijkman, sinderen, pires } @ cs.utwente.nl Abstract. An MDA-based design approach should be able as the various design goals. In this paper, we discuss how our design approach can be supported using the MDA

  17. Curved and diffuse interface effects on the nuclear surface tension

    E-Print Network [OSTI]

    V. M. Kolomietz; S. V. Lukyanov; A. I. Sanzhur

    2012-01-30T23:59:59.000Z

    We redefine the surface tension coefficient for a nuclear Fermi-liquid drop with a finite diffuse layer. Following Gibbs-Tolman concept, we introduce the equimolar radius R_e of sharp surface droplet at which the surface tension is applied and the radius of tension surface R_s which provides the minimum of the surface tension coefficient \\sigma. This procedure allows us to derive both the surface tension and the corresponding curvature correction (Tolman length) correctly for the curved and diffuse interface. We point out that the curvature correction depends significantly on the finite diffuse interface. This fact is missed in traditional nuclear considerations of curvature correction to the surface tension. We show that Tolman's length \\xi is negative for nuclear Fermi-liquid drop. The value of the Tolman length is only slightly sensitive to the Skyrme force parametrization and equals \\xi=-0.36 fm.

  18. Pressurized water nuclear reactor system with hot leg vortex mitigator

    DOE Patents [OSTI]

    Lau, Louis K. S. (Monroeville, PA)

    1990-01-01T23:59:59.000Z

    A pressurized water nuclear reactor system includes a vortex mitigator in the form of a cylindrical conduit between the hot leg conduit and a first section of residual heat removal conduit, which conduit leads to a pump and a second section of residual heat removal conduit leading back to the reactor pressure vessel. The cylindrical conduit is of such a size that where the hot leg has an inner diameter D.sub.1, the first section has an inner diameter D.sub.2, and the cylindrical conduit or step nozzle has a length L and an inner diameter of D.sub.3 ; D.sub.3 /D.sub.1 is at least 0.55, D.sub.2 is at least 1.9, and L/D.sub.3 is at least 1.44, whereby cavitation of the pump by a vortex formed in the hot leg is prevented.

  19. Turbine blade platform seal

    DOE Patents [OSTI]

    Zagar, Thomas W. (Winter Springs, FL); Schiavo, Anthony L. (Oviedo, FL)

    2001-01-01T23:59:59.000Z

    A rotating blade group 90 for a turbo-machine having an improved device for sealing the gap 110 between the edges 112,114 of adjacent blade platforms 96,104. The gap 110 between adjacent blades 92,100 is sealed by a seal pin 20 its central portion 110 and by a seal plate 58,60 at each of the front 54 and rear 56 portions. The seal plates 58,60 are inserted into corresponding grooves 62,64 formed in the adjacent edges 112,114 of adjoining blades 92,100 and held in place by end plates 40,42. The end of the seal plates 58,60 may be chamfered 78,80 to improve the seal against the end plate 40,42. The seal pin 20 provides the required damping between the blades 92,100 and the seal plates 58,60 provide improved sealing effectiveness.

  20. Energy Tracking Software Platform

    SciTech Connect (OSTI)

    Ryan Davis; Nathan Bird; Rebecca Birx; Hal Knowles

    2011-04-04T23:59:59.000Z

    Acceleration has created an interactive energy tracking and visualization platform that supports decreasing electric, water, and gas usage. Homeowners have access to tools that allow them to gauge their use and track progress toward a smaller energy footprint. Real estate agents have access to consumption data, allowing for sharing a comparison with potential home buyers. Home builders have the opportunity to compare their neighborhood's energy efficiency with competitors. Home energy raters have a tool for gauging the progress of their clients after efficiency changes. And, social groups are able to help encourage members to reduce their energy bills and help their environment. EnergyIT.com is the business umbrella for all energy tracking solutions and is designed to provide information about our energy tracking software and promote sales. CompareAndConserve.com (Gainesville-Green.com) helps homeowners conserve energy through education and competition. ToolsForTenants.com helps renters factor energy usage into their housing decisions.

  1. Platform Computing Inc. 3760 14th Avenue

    E-Print Network [OSTI]

    Buyya, Rajkumar

    Platform Computing Inc. 3760 14th Avenue Markham, Ontario L3R 3T7 Canada Tel: (905) 948-8448 Fax: (905) 948-9975 email: info@platform.com www.platform.com Platform Computing Launches Networking Site and researchers was launched today. The site, sponsored by HPC management software leader Platform Computing

  2. Steady periodic gravity waves with surface tension

    E-Print Network [OSTI]

    Samuel Walsh

    2009-11-06T23:59:59.000Z

    In this paper we consider two-dimensional, stratified, steady water waves propagating over an impermeable flat bed and with a free surface. The motion is assumed to be driven by capillarity (that is, surface tension) on the surface and a gravitational force acting on the body of the fluid. We prove the existence of global continua of classical solutions that are periodic and traveling. This is accomplished by first constructing a 1-parameter family of laminar flow solutions, $\\mathcal{T}$, then applying bifurcation theory methods to obtain local curves of small amplitude solutions branching from $\\mathcal{T}$ at an eigenvalue of the linearized problem. Each solution curve is then continued globally by means of a degree theoretic theorem in the spirit of Rabinowitz. Finally, we complement the degree theoretic picture by proving an alternate global bifurcation theorem via the analytic continuation method of Dancer.

  3. Design of a quasi-passive parallel leg exoskeleton to augment load carrying for walking

    E-Print Network [OSTI]

    Valiente, Andrew (Andrew J.)

    2005-01-01T23:59:59.000Z

    Biomechanical experiments suggest that it may be possible to build a leg exoskeleton to reduce the metabolic cost of walking while carrying a load. A quasi-passive, leg exoskeleton is presented that is designed to assist ...

  4. Evaluation of Critical Habitat for the California red-legged frog (Rana aurora draytonii)

    E-Print Network [OSTI]

    Allen, Michael F.; Tennant, Tracy

    2000-01-01T23:59:59.000Z

    With Comparisons to Rana Aurora and Rana Pretiosa. ” Copeia.M. Jennings. May 1996. “Rana aurora- Red -legged Frog” [WebRed- Legged Frog, Rana aurora, Tadpoles. ” Animal Behaviour

  5. Human-Oriented Biped Robot Design: Insights into the Development of a truly Anthropomorphic Leg

    E-Print Network [OSTI]

    Gini, Giuseppina

    studies were conducted on legged robot in order to improve their efficiency and stability. A pioneering, being entirely made by pieces cut out from a polycarbonate sheet with laser cutting technology. Each leg

  6. Leg 163X Cruise Report -Appendix A: XRF analyses Shorebased XRF analyses

    E-Print Network [OSTI]

    Thy, Peter

    Leg 163X Cruise Report - Appendix A: XRF analyses A-1 Appendix A Shorebased XRF analyses #12;Leg 163X Cruise Report - Appendix A: XRF analyses A-2 Appendix A. Shorebased XRF Analyses (Major Elements

  7. Forward and reverse genetic approaches to identify genes involved in leg morphogenesis in Drosophila

    E-Print Network [OSTI]

    Wang, Xiaochen

    2010-04-26T23:59:59.000Z

    Development of Drosophila leg imaginal discs provides an ideal model to study hormone-regulated morphogenesis. During the onset of metamorphosis, a pulse of ecdysone triggers the rapid transformation of flat leg imaginal ...

  8. Introduction Running by legged arthropods is well modeled as a spring-

    E-Print Network [OSTI]

    Dudek, Daniel M.

    of extensor tendons or apodemes (Bennet-Clark, 1975; Katz and Gosline, 1992). The legs of arthropods

  9. MOTION PLANNING FOR LEGGED AND HUMANOID ROBOTS A DISSERTATION

    E-Print Network [OSTI]

    Indiana University

    MOTION PLANNING FOR LEGGED AND HUMANOID ROBOTS A DISSERTATION SUBMITTED TO THE DEPARTMENT 2009 All Rights Reserved ii #12;I certify that I have read this dissertation and that, in my opinion, it is fully adequate in scope and quality as a dissertation for the degree of Doctor of Philosophy. (Jean

  10. OCEAN DRILLING PROGRAM LEG 124E ENGINEERING PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 124E ENGINEERING PROSPECTUS PHILIPPINE SEA Michael A. Storms Supr. of Development Engineering Ocean Drilling Program Texas A & M University College Station, Texas 77840 Philip D. Rabinowitz Director ODP/TAMU- Barry W. Harding Manager of Engineering and Drilling Operations ODP/TAMU Louis

  11. OCEAN DRILLING PROGRAM LEG 142 ENGINEERING AND SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 142 ENGINEERING AND SCIENTIFIC PROSPECTUS EAST PACIFIC RISE Mr. Michael A. Storms Operations Superintendent/ Assistant Manager of Engineering and Drilling Operations Ocean Drilling Program Texas A&M University Research Park 1000 Discovery Drive College Station, Texas 77845

  12. Lecture Ch. 5a Surface tension (Kelvin effect)

    E-Print Network [OSTI]

    Russell, Lynn

    1 Lecture Ch. 5a · Surface tension (Kelvin effect) ­ Hygroscopic growth (subsaturated humidity Surface Tension · By definition · By 1st Law (modified for surface area change) Kelvin Effect · Force: What happens to condensed H2O? ­ Precipitation processes Surface Thermodynamics · Surfaces require

  13. 6. Instabilities 6.1 Surface tension driven instabilities

    E-Print Network [OSTI]

    Bico,José

    6. Instabilities Apple® #12;6.1 Surface tension driven instabilities ? ? Es min, but slow Es · · #P1 a b Pb Pa #P2 - + viscous stress $ unstable surface tension $ stable (at the onset ! non linear;dynamics: viscous forces or inertia? viscous flow: Ohnesorge number inertia: ! inertia! viscous 6.1 Surface

  14. A finite element analysis of the pullout capacity of suction caissons in clay

    E-Print Network [OSTI]

    Sgardeli, Christina G. (Georgia-Chrysouli C.)

    2009-01-01T23:59:59.000Z

    Suction caissons are increasingly becoming the foundation of choice for offshore structures in deep water. They are used extensively in Tension Leg Platforms and provide the most efficient foundations for many offshore ...

  15. Booly: a new data integration platform

    E-Print Network [OSTI]

    Do, Long H; Esteves, Francisco F; Karten, Harvey J; Bier, Ethan

    2010-01-01T23:59:59.000Z

    of the nation in data integration for bioinformatics. JBooly: a new data integration platform. BMC BioinformaticsAccess Booly: a new data integration platform Long H Do 1* ,

  16. Integrating Neuromuscular and Cyber Systems for Neural Control of Artificial Legs

    E-Print Network [OSTI]

    Sun, Yan Lindsay

    Integrating Neuromuscular and Cyber Systems for Neural Control of Artificial Legs He Huang, Yan (CPS) for neurally controlled artificial legs. The key to the new CPS system is the neural resulted in a highly accurate and reliable software system for neural control of artificial legs

  17. Quasi-Static Analysis of a Leg-Wheel Hybrid Vehicle for Enhancing Stair Climbing Ability

    E-Print Network [OSTI]

    Laksanacharoen, Sathaporn

    Quasi-Static Analysis of a Leg-Wheel Hybrid Vehicle for Enhancing Stair Climbing Ability Pattaramon}@kmutt.ac.th stl@kmitnb.ac.th Abstract - This paper presents quasi-static analysis of a leg- wheel hybrid vehicle. Index Terms - Leg-Wheel hybrid vehicle, Stair climbing ability, Quasi-static analysis I. INTRODUCTION

  18. Between-sex Variation in Running Speed and a Potential Cost of Leg Autotomy in the

    E-Print Network [OSTI]

    Brown, Christopher A.

    Between-sex Variation in Running Speed and a Potential Cost of Leg Autotomy in the Wolf Spider of losing a leg is a reduction in burst running speed, which may affect prey capture and predator avoidance differed in either sprint speed or the potential cost of leg loss. Autotomy was fairly common in the field

  19. A versatile scanning acoustic platform

    E-Print Network [OSTI]

    N G Parker; P V Nelson; M J W Povey

    2010-02-01T23:59:59.000Z

    We present a versatile and highly configurable scanning acoustic platform. This platform, comprising of a high frequency transducer, bespoke positioning system and temperature-regulated sample unit, enables the acoustic probing of materials over a wide range of length scales and with minimal thermal aberration. In its bare form the platform acts as a reflection-mode acoustic microscope, while optical capabilities are readily incorporated to extend its abilities to the acousto-optic domain. Here we illustrate the capabilities of the platform through its incarnation as an acoustic microscope. Operating at 55 MHz we demonstrate acoustic imaging with a lateral resolution of 25 microns. We outline its construction, calibration and capabilities as an acoustic microscope, and discuss its wider applications.

  20. Dynamic Transitions of Surface Tension Driven Convection

    E-Print Network [OSTI]

    Henk Dijkstra; Taylan Sengul; Shouhong Wang

    2011-05-05T23:59:59.000Z

    We study the well-posedness and dynamic transitions of the surface tension driven convection in a three-dimensional (3D) rectangular box with non-deformable upper surface and with free-slip boundary conditions. It is shown that as the Marangoni number crosses the critical threshold, the system always undergoes a dynamic transition. In particular, two different scenarios are studied. In the first scenario, a single mode losing its stability at the critical parameter gives rise to either a Type-I (continuous) or a Type-II (jump) transition. The type of transitions is dictated by the sign of a computable non-dimensional parameter, and the numerical computation of this parameter suggests that a Type-I transition is favorable. The second scenario deals with the case where the geometry of the domain allows two critical modes which possibly characterize a hexagonal pattern. In this case we show that the transition can only be either a Type-II or a Type-III (mixed) transition depending on another computable non-dimensional parameter. We only encountered Type-III transition in our numerical calculations. The second part of the paper deals with the well-posedness and existence of global attractors for the problem.

  1. On stability condition for bifluid flows with surface tension : application to microfluidics

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    On stability condition for bifluid flows with surface tension : application to microfluidics C immiscible bifluid flows with surface tension are here considered. Since Brackbill, Kothe and Zemach (J mixing dynamics inside microdroplets. Key words: surface tension, curvature, stability condition, bifluid

  2. National Bioenergy Center Biochemical Platform Integration Project

    SciTech Connect (OSTI)

    Not Available

    2008-07-01T23:59:59.000Z

    April through June 2008 update on activities of the National Bioenergy Center's Biochemical Platform Integration Project.

  3. Communication platform for open heterogeneous MASs

    E-Print Network [OSTI]

    Zachmann, Gabriel

    (Technical Computer Science) Prof. Dr. Gabriel Zachmann (Computer Graphics) #12;Communication platform

  4. WORK PLATFORMS and SCAFFOLDING Table Of Contents

    E-Print Network [OSTI]

    US Army Corps of Engineers

    EM 385-1-1 XX Sep 13 i Section 22 WORK PLATFORMS and SCAFFOLDING Table Of Contents Section: Page 22 (Personnel) Platforms...................22-33 22.L Elevating Work Platforms..............................................22-33 22.M Vehicle-Mounted Elevating And Rotating Work Platforms (Aerial Devices

  5. A Verification Platform System on Chip

    E-Print Network [OSTI]

    Melham, Tom

    A Verification Platform for System on Chip Kong Woei Susanto A Dissertation submitted a platform based design method, called a system integration platform. In this design methodology, a system specifications. Subsequently, a similar platform can be constructed for formal verification. Every component

  6. Surface tension in bilayer membranes with fixed projected area

    E-Print Network [OSTI]

    Alberto Imparato

    2006-04-05T23:59:59.000Z

    We study the elastic response of bilayer membranes with fixed projected area to both stretching and shape deformations. A surface tension is associated to each of these deformations. By using model amphiphilic membranes and computer simulations, we are able to observe both the types of deformation, and thus, both the surface tensions, related to each type of deformation, are measured for the same system. These surface tensions are found to assume different values in the same bilayer membrane: in particular they vanish for different values of the projected area. We introduce a simple theory which relates the two quantities and successfully apply it to the data obtained with computer simulations.

  7. Leveraging Platform Basic Services in Cloud Application Platforms for the Development of Cloud

    E-Print Network [OSTI]

    Simons, Anthony J. H.

    Leveraging Platform Basic Services in Cloud Application Platforms for the Development of Cloud.Simons@dcs.shef.ac.uk Abstract-- Cloud application platforms gain popularity and have the potential to alter the way service based cloud applications are developed involving utilisation of platform basic services. A platform

  8. Climate-derived tensions in Arctic security.

    SciTech Connect (OSTI)

    Backus, George A.; Strickland, James Hassler

    2008-09-01T23:59:59.000Z

    Globally, there is no lack of security threats. Many of them demand priority engagement and there can never be adequate resources to address all threats. In this context, climate is just another aspect of global security and the Arctic just another region. In light of physical and budgetary constraints, new security needs must be integrated and prioritized with existing ones. This discussion approaches the security impacts of climate from that perspective, starting with the broad security picture and establishing how climate may affect it. This method provides a different view from one that starts with climate and projects it, in isolation, as the source of a hypothetical security burden. That said, the Arctic does appear to present high-priority security challenges. Uncertainty in the timing of an ice-free Arctic affects how quickly it will become a security priority. Uncertainty in the emergent extreme and variable weather conditions will determine the difficulty (cost) of maintaining adequate security (order) in the area. The resolution of sovereignty boundaries affects the ability to enforce security measures, and the U.S. will most probably need a military presence to back-up negotiated sovereignty agreements. Without additional global warming, technology already allows the Arctic to become a strategic link in the global supply chain, possibly with northern Russia as its main hub. Additionally, the multinational corporations reaping the economic bounty may affect security tensions more than nation-states themselves. Countries will depend ever more heavily on the global supply chains. China has particular needs to protect its trade flows. In matters of security, nation-state and multinational-corporate interests will become heavily intertwined.

  9. adhesion tissue tension: Topics by E-print Network

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

    Matter (arXiv) Summary: The effect of self-generated tension in the backbone of a bottle-brush (BB) macromolecule, adsorbed on an attractive surface, is studied by means of...

  10. The design and analysis of tension fabric structures

    E-Print Network [OSTI]

    Son, Miriam Euni

    2007-01-01T23:59:59.000Z

    Although tensioned fabric structures are increasingly in demand, since they are comparatively new to the engineering world, there are relatively limited resources available about such structures. This report reviews the ...

  11. Optical control of surface-tension effects in complex nanofluids

    E-Print Network [OSTI]

    Rotschild, Carmel

    We study coupling between light and nano-particle suspensions, through surface-tension effects in capillaries. Increasing light intensity far-away from the interface causes huge changes in the fluid level, manifesting ...

  12. Dropwise Condensation of Low Surface Tension Fluids on Omniphobic Surfaces

    E-Print Network [OSTI]

    Rykaczewski, Konrad

    Compared to the significant body of work devoted to surface engineering for promoting dropwise condensation heat transfer of steam, much less attention has been dedicated to fluids with lower interfacial tension. A vast ...

  13. Softening of edges of solids by surface tension

    E-Print Network [OSTI]

    Serge Mora; Yves Pomeau

    2014-08-10T23:59:59.000Z

    Surface tension tends to minimize the area of interfaces between pieces of matter in different thermodynamic phases, be they in the solid or the liquid state. This can be relevant for the macroscopic shape of very soft solids, and lead to a roughening of initially sharp edges. We calculate this effect for a neo-Hookean elastic solid, with assumptions corresponding to actual experiments, namely the case where an initially sharp edge is rounded by the effect of surface tension felt when the fluid surrounding the soft solid (and so surface tension) is changed at the solid/liquid boundary. We consider two opposite limits where the analysis can be carried to the end, the one of a shallow angle and the one of a very sharp angle. Both cases yield a discontinuity of curvature in the state with surface tension although the initial state had a discontinuous slope.

  14. Abstract This paper presents a six-legged, sprawl-tuned autonomous robot (STAR). This novel robot has a variable leg

    E-Print Network [OSTI]

    Fearing, Ron

    and energy consumption, the robot is fitted with radially spoked legs which can perform almost like regularAbstract² This paper presents a six-legged, sprawl-tuned autonomous robot (STAR). This novel robot advantages over wheeled vehicles for off-road locomotion, such as in caves and collapsed buildings

  15. Driver tension responses generated by various levels of intersection illumination

    E-Print Network [OSTI]

    Franklin, Weldon Clifford

    1962-01-01T23:59:59.000Z

    DRIVER TENSION RESPONSES GENERATED BY VARIOUS LEVELS OF INTERSECTION ILLUMINATION A Thesis By WELDON CLIFFORD FRANKLIN Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August 1962 Major Subj ect: Civil Engineering DRIVER TENSION RESPONSES GENERATED BY VARIOUS LEVELS OF INTERSECTION ILLUMINATION A Thesis By WELDON CLIFFORD FRANKLIN Approved as to style and content by...

  16. Surface tension induced by sphingomyelin to ceramide conversion in lipid membranes

    E-Print Network [OSTI]

    Surface tension induced by sphingomyelin to ceramide conversion in lipid membranes Iván López-Montero

  17. On Stokes flow driven by surface tension in the presence of a surfactant

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    On Stokes flow driven by surface tension in the presence of a surfactant G. Prokert Technische driven by surface tension. The surface tension coefficient is assumed to be a nonincreasing function a linear elliptic system. We will consider surface tension as the only driving mechanism. Mathematically

  18. Convection in Arc Weld Pools Electromagnetic and surface tension forces are shown to

    E-Print Network [OSTI]

    Eagar, Thomas W.

    Convection in Arc Weld Pools Electromagnetic and surface tension forces are shown to dominate flow tension forces. It is shown that the electromag- netic and surface tension forces domi- nate the flow by experimental measurements of segrega- tion in the weld pool. It is also shown that the surface tension driven

  19. Jump conditions and dynamic surface tension at permeable interfaces such as the inner core boundary

    E-Print Network [OSTI]

    Jump conditions and dynamic surface tension at permeable interfaces such as the inner core boundary as the density and viscosity changes. Independently of any intrinsic surface tension, a dynamic surface tension, a possibly anisotropic surface tension and terms including an interface mass density. In pratice

  20. On Stokes flow driven by surface tension in the presence of a surfactant

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    On Stokes flow driven by surface tension in the presence of a surfactant G. Prokert Technische driven by surface tension. The surface tension coe#cient is assumed to be a nonincreasing function a linear elliptic system. We will consider surface tension as the only driving mechanism. Mathematically

  1. A discontinuous Galerkin front tracking method for two-phase flows with surface tension

    E-Print Network [OSTI]

    Peraire, Jaime

    A discontinuous Galerkin front tracking method for two-phase flows with surface tension Vinh with surface tension. Ó 2009 Elsevier Ltd. All rights reserved. 1. Introduction Interfaces separating regions tension. In this case, the interface separates two different fluids and the effect of surface tension re

  2. What controls surface tension and cell sorting in tissue formation and morphogenesis?

    E-Print Network [OSTI]

    Mather, Patrick T.

    What controls surface tension and cell sorting in tissue formation and morphogenesis? Living as an emergent material property called surface tension. Similarly, cohesive interactions between cells, mediated surface tension of cohesive cells is, however, more complex than conventional surface tension. Like

  3. Dynamic stability of running: The effects of speed and leg amputations on the maximal Lyapunov exponent

    SciTech Connect (OSTI)

    Look, Nicole [Department of Applied Mathematics, University of Colorado Boulder, Boulder, Colorado 80309 (United States)] [Department of Applied Mathematics, University of Colorado Boulder, Boulder, Colorado 80309 (United States); Arellano, Christopher J.; Grabowski, Alena M.; Kram, Rodger [Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado 80309 (United States)] [Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado 80309 (United States); McDermott, William J. [The Orthopedic Specialty Hospital, Murray, Utah 84107 (United States)] [The Orthopedic Specialty Hospital, Murray, Utah 84107 (United States); Bradley, Elizabeth [Department of Computer Science, University of Colorado Boulder, Boulder, Colorado 80309, USA and Santa Fe Institute, Santa Fe, New Mexico 87501 (United States)] [Department of Computer Science, University of Colorado Boulder, Boulder, Colorado 80309, USA and Santa Fe Institute, Santa Fe, New Mexico 87501 (United States)

    2013-12-15T23:59:59.000Z

    In this paper, we study dynamic stability during running, focusing on the effects of speed, and the use of a leg prosthesis. We compute and compare the maximal Lyapunov exponents of kinematic time-series data from subjects with and without unilateral transtibial amputations running at a wide range of speeds. We find that the dynamics of the affected leg with the running-specific prosthesis are less stable than the dynamics of the unaffected leg and also less stable than the biological legs of the non-amputee runners. Surprisingly, we find that the center-of-mass dynamics of runners with two intact biological legs are slightly less stable than those of runners with amputations. Our results suggest that while leg asymmetries may be associated with instability, runners may compensate for this effect by increased control of their center-of-mass dynamics.

  4. The Role of Bag Surface Tension in Color Confinement

    E-Print Network [OSTI]

    K. A. Bugaev; A. I. Ivanytskyi

    2011-07-07T23:59:59.000Z

    We discuss here the novel view at the color confinement which, on the one hand, allows us to find out the surface tension coefficient of quark gluon bags and, under a plausible assumption, to determine the endpoint temperature of the QCD phase diagram, on the other hand. The present model considers the confining color tube as the cylindrical quark gluon bag with non-zero surface tension. A close inspection of the free energies of elongated cylindrical bag and the confining color tube that connects the static quark-antiquark pair allows us to find out the string tension in terms of the surface tension, thermal pressure and the bag radius. Using the derived relation it is possible to estimate the bag surface tension at zero temperature directly from the lattice QCD data and to estimate the (tri)critical endpoint temperature. In the present analysis the topological free energy of the cylindrical bag is accounted for the first time. The requirement of positive entropy density of such bags leads to negative values of the surface tension coefficient of quark gluon bags at the cross-over region, i.e. at the continuous transition to deconfined quarks and gluons. We argue that the cross-over existence at supercritical temperatures in ordinary liquids is also provided by the negative surface tension coefficient values. It is shown that the confining tube model naturally accounts for an existence of a very pronounced surprising maximum of the tube entropy observed in the lattice QCD simulations, which, as we argue, signals about the fractional surface formation of the confining tube. In addition, using the developed formalism we suggest the gas of free tubes model and demonstrate that it contains two phases.

  5. Ecological Issues Related to Decommissioning of California's Offshore Production Platforms

    E-Print Network [OSTI]

    Carr, Mark H.

    Ecological Issues Related to Decommissioning of California's Offshore Production Platforms Report................................................................................................................ 8 II.A. Review of California platforms............................................................................. 8 II.A.i Geography of California platforms

  6. An evaluation of standing-induced lower leg edema as a function of floor surace

    E-Print Network [OSTI]

    DiSalvi, Lawrence Roberts

    1995-01-01T23:59:59.000Z

    of Tukey Mean Separation Analysis of Floor Surface Rankings 34 LIST OF FIGURES FIGURE Page 1 Volume Measurement of the Ankle/Foot Region. 16 2 Above-Knee Region (Leg Region A): Percent Volume Change by Floor Surface and Gender. . . 24 3 Below...-Knee Region (Leg Region B): Percent Volume Change by Floor Surface and Gender. . . 25 4 Ankle/Foot Region (Leg Region C): Percent Volume Change by Floor Surface and Gender. . . 26 5 Above-Knee Region (Leg Region A): Percent Volume Change by Week...

  7. FPGA Implementation of a General Space Vector Approach on a 6-Leg Voltage Source Inverter

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ]-[18]. In this paper, a 3-phase Permanent Magnet Synchronous Machine (PMSM) with each phase being supplied by a 2-leg

  8. Surface tension with Normal Curvature in Curved Space-Time

    E-Print Network [OSTI]

    Himanshu kumar; Sharf Alam; Suhail Ahmad

    2012-11-01T23:59:59.000Z

    With an aim to include the contribution of surface tension in the action of the boundary, we define the tangential pressure in terms of surface tension and Normal curvature in a more naturally geometric way. First, we show that the negative tangential pressure is independent of the four-velocity of a very thin hyper-surface. Second, we relate the 3-pressure of a surface layer to the normal curvature and the surface tension. Third, we relate the surface tension to the energy of the surface layer. Four, we show that the delta like energy flows across the hyper-surface will be zero for such a representation of intrinsic 3-pressure. Five, for the weak field approximation and for static spherically symmetric configuration, we deduce the classical Kelvin's relation. Six, we write a modified action for the boundary having contributions both from surface tension and normal curvature of the surface layer. Also we propose a method to find the physical action assuming a reference background, where the background is not flat.

  9. Rupture of a Biomembrane under Dynamic Surface Tension

    E-Print Network [OSTI]

    D. J. Bicout; E. I. Kats

    2011-12-19T23:59:59.000Z

    How long a fluid membrane vesicle stressed with a steady ramp of micropipette last before rupture? Or conversely, how high the surface tension should be to rupture a membrane? To answer these challenging questions we have developed a theoretical framework that allows description and reproduction of Dynamic Tension Spectroscopy (DTS) observations. The kinetics of the membrane rupture under ramps of surface tension is described as a combination of initial pore formation followed by Brownian process of the pore radius crossing the time-dependent energy barrier. We present the formalism and derive (formal) analytical expression of the survival probability describing the fate of the membrane under DTS conditions. Using numerical simulations for the membrane prepared in an initial state with a given distribution of times for pore nucleation, we have studied the membrane lifetime (or inverse of rupture rate) and distribution of membrane surface tension at rupture as a function of membrane characteristics like pore nucleation rate, the energy barrier to failure and tension loading rate. It is found that simulations reproduce main features of the experimental data, particularly, the pore nucleation and pore size diffusion controlled limits of membrane rupture dynamics. This approach can also be applied to processes of permeation and pore opening in membranes (electroporation, membrane disruption by antimicrobial peptides, vesicle fusion).

  10. Surface tension in the dilute Ising model. The Wulff construction

    E-Print Network [OSTI]

    Marc Wouts

    2008-04-14T23:59:59.000Z

    We study the surface tension and the phenomenon of phase coexistence for the Ising model on $\\mathbbm{Z}^d$ ($d \\geqslant 2$) with ferromagnetic but random couplings. We prove the convergence in probability (with respect to random couplings) of surface tension and analyze its large deviations : upper deviations occur at volume order while lower deviations occur at surface order. We study the asymptotics of surface tension at low temperatures and relate the quenched value $\\tau^q$ of surface tension to maximal flows (first passage times if $d = 2$). For a broad class of distributions of the couplings we show that the inequality $\\tau^a \\leqslant \\tau^q$ -- where $\\tau^a$ is the surface tension under the averaged Gibbs measure -- is strict at low temperatures. We also describe the phenomenon of phase coexistence in the dilute Ising model and discuss some of the consequences of the media randomness. All of our results hold as well for the dilute Potts and random cluster models.

  11. Static Performance of Power Augmented Ram Platform

    E-Print Network [OSTI]

    Collins, Gary S.

    Static Performance of Power Augmented Ram Platform Eliana Rodriguez (Advisor: Dr. Matveev) REU Site experiment that was conducted similar to the first experiment, but instead of a straight platform, a slanted platform positioned at five degrees to a horizontal plane was used. · As before, an air nozzle

  12. Toolbox Safety Talk Aerial Work Platforms

    E-Print Network [OSTI]

    Pawlowski, Wojtek

    Toolbox Safety Talk Aerial Work Platforms Environmental Health & Safety Facilities Safety & Health to Environmental Health & Safety for recordkeeping. Aerial work platforms are important tools and if used correctly, and equipment damage. This guide addresses safe use of aerial work platforms and provides tips to prevent

  13. Platform identification using Design Structure Matrices

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Platform identification using Design Structure Matrices Konstantinos Kalligeros* , Olivier de Weck identification of platform components at multiple levels of system aggregation, among variants within a family variables of the variants. We then introduce a novel algorithm for the identification of platform variables

  14. Toolbox Safety Talk Articulating Boom Work Platforms

    E-Print Network [OSTI]

    Pawlowski, Wojtek

    Toolbox Safety Talk Articulating Boom Work Platforms Environmental Health & Safety Facilities sign-in sheet to Environmental Health & Safety for recordkeeping. Articulating boom work platforms platforms and provides tips to prevent injuries, death, and equipment damage. More information can be found

  15. Flexible Product Platforms Eun Suk Suh

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Flexible Product Platforms by Eun Suk Suh Submitted to the Engineering Systems Division in partial by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Richard de Neufville Professor of Engineering Systems #12;2 #12;Flexible Product Platforms by Eun Suk Suh of engineering systems by proposing and demonstrating a way to implement flexible platform strategy to re- spond

  16. Middleware Based Executive for Embedded Reconfigurable Platforms

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Middleware Based Executive for Embedded Reconfigurable Platforms A. Khiar and N.Knecht and L embedded Multiprocessor Systems-on-Chip (MPSoC) platform containing reconfigurable hardware computing units of the french ANR FOSFOR (Flexible Operating System FOr Reconfigurable platforms) [1] project, the objective

  17. www.canterbury.ac.nz/platform From the Vice-Chancellor Welcome to Platform

    E-Print Network [OSTI]

    Hickman, Mark

    www.canterbury.ac.nz/platform #12;From the Vice-Chancellor Welcome to Platform As a University-wide festival, Platform 2010 offers a unique and enriched experience of the arts. It is a chance for audiences for the third biennale University of Canterbury Arts Festival, Platform. The festival is 11 days of fine art

  18. Platform-of-Platforms: A Modular, Integrated Resource Framework for Large-Scale Services

    E-Print Network [OSTI]

    Weissman, Jon

    Platform-of-Platforms: A Modular, Integrated Resource Framework for Large-Scale Services Rahul there has been a great deal of research ac- tivity in the development of diverse network service platforms-tier resource platform may be a natural fit for such multi-tier network services. Figure 1: Hierarchical

  19. Surface tension and contact with soft elastic solids

    E-Print Network [OSTI]

    Robert W. Style; Callen Hyland; Rostislav Boltyanskiy; John S. Wettlaufer; Eric R. Dufresne

    2013-10-11T23:59:59.000Z

    Johnson-Kendall-Robert (JKR) theory is the basis of modern contact mechanics. It describes how two deformable objects adhere together, driven by adhesion energy and opposed by elasticity. However, it does not include solid surface tension, which also opposes adhesion by acting to flatten the surface of soft solids. We tested JKR theory to see if solid surface tension affects indentation behaviour. Using confocal microscopy, we characterised the indentation of glass particles into soft, silicone substrates. While JKR theory held for particles larger than a critical, elastocapillary lengthscale, it failed for smaller particles. Instead, adhesion of small particles mimicked the adsorption of particles at a fluid interface, with a size-independent contact angle between the undeformed surface and the particle given by a generalised version of Young's law. A simple theory quantitatively captures this behaviour, and explains how solid surface tension dominates elasticity for small-scale indentation of soft materials.

  20. Surface tension mediated conversion of light to work

    DOE Patents [OSTI]

    Okawa, David; Pastine, Stefan J; Zettl, Alexander K; Frechet, Jean M. J

    2014-12-02T23:59:59.000Z

    Disclosed are a method and apparatus for converting light energy to mechanical energy by modification of surface tension on a supporting fluid. The apparatus comprises an object which may be formed as a composite object comprising a support matrix and a highly light absorptive material. The support matrix may comprise a silicon polymer. The highly light absorptive material may comprise vertically aligned carbon nanotubes (VANTs) embedded in the support matrix. The composite object is supported on a fluid. By exposing the highly light absorptive material to light, heat is generated, which changes the surface tension of the composite object, causing it to move physically within the fluid.

  1. Resource Overbooking and Application Profiling in Shared Hosting Platforms *

    E-Print Network [OSTI]

    Urgaonkar, Bhuvan

    Resource Overbooking and Application Profiling in Shared Hosting Platforms * Bhuvan Urgaonkar for provisioning CPU and network resources in shared hosting platforms running potentially antagonistic third of overbooking resources in shared platforms, to maximize the platform yield: the revenue generated

  2. Ecological PErformancE of ocS PlatformS

    E-Print Network [OSTI]

    Love, Milton

    Ecological PErformancE of ocS PlatformS aS fiSh habitat off california OCS Study MMS 2004 Region #12;#12;Ecological PErformancE of ocS PlatformS aS fiSh habitat off california Authored by: Milton performance of OCS platforms as fish habitat off California. MMS OCS Study 2004-005. Marine Science Institute

  3. Turbine engine airfoil and platform assembly

    DOE Patents [OSTI]

    Campbell, Christian X. (Oviedo, FL); James, Allister W. (Chuluota, FL); Morrison, Jay A. (Oviedo, FL)

    2012-07-31T23:59:59.000Z

    A turbine airfoil (22A) is formed by a first process using a first material. A platform (30A) is formed by a second process using a second material that may be different from the first material. The platform (30A) is assembled around a shank (23A) of the airfoil. One or more pins (36A) extend from the platform into holes (28) in the shank (23A). The platform may be formed in two portions (32A, 34A) and placed around the shank, enclosing it. The two platform portions may be bonded to each other. Alternately, the platform (30B) may be cast around the shank (23B) using a metal alloy with better castability than that of the blade and shank, which may be specialized for thermal tolerance. The pins (36A-36D) or holes for them do not extend to an outer surface (31) of the platform, avoiding stress concentrations.

  4. Numerical Model of a Tensioner System and Flex Joint

    E-Print Network [OSTI]

    Huang, Han

    2013-07-27T23:59:59.000Z

    Top Tensioned Riser (TTR) and Steel Catenary Riser (SCR) are often used in a floating oil/gas production system deployed in deep water for oil transport. This study focuses on the improvements to the existing numerical code, known as CABLE3D...

  5. Disk-shaped Compact Tension Test for Asphalt Concrete Fracture

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Disk-shaped Compact Tension Test for Asphalt Concrete Fracture by M.P.Wagoner, W.G. Buttlar and G geometry is the ability to test cylindrical cores obtained from in-place asphalt concrete pavements finalizing the specimen geometry, a typical asphalt concrete surface mixture was tested at various

  6. An experimental investigation of the surface tension of seawater

    E-Print Network [OSTI]

    Nayar, Kishor Govind

    2014-01-01T23:59:59.000Z

    Surface tension of seawater was measured for absolute salinities S = (20.01, 35.18, 40.49, 79.39, 121.54) g/kg across a temperature range of T = (0 - 90)°C at atmospheric pressure using the Wilhelmy plate method. The ...

  7. AVERAGE RANKS OF ELLIPTIC CURVES: TENSION BETWEEN DATA AND CONJECTURE

    E-Print Network [OSTI]

    Stein, William

    curves of conductor X} converge as X tends to infinity, and if so, what is the limit P = lim X PAVERAGE RANKS OF ELLIPTIC CURVES: TENSION BETWEEN DATA AND CONJECTURE BAUR BEKTEMIROV, BARRY MAZUR, and · to list them in order of increasing conductor, banking on the theorem that tells us that there are only

  8. LINEAR DISPERSIVE DECAY ESTIMATES FOR VORTEX SHEETS WITH SURFACE TENSION

    E-Print Network [OSTI]

    Spirn, Daniel

    governing irrotational vortex sheets and water waves with surface tension. Using oscillatory integral order, well- posedness theory poses difficulties; however, local-in-time existence for water waves by the kinematic condition in that the interface does not break. This implies the component of the velocity field

  9. Surface Tension Mediated Conversion of Light to Work David Okawa,,

    E-Print Network [OSTI]

    Zettl, Alex

    of intermediates. Considerable effort has been devoted to improving energy collection, storage, and utilization;2Surface Tension Mediated Conversion of Light to Work David Okawa,, Stefan J. Pastine, Alex Zettl,,§ and Jean M. J. Fre´chet*,,§ College of Chemistry and Department of Physics, UniVersity of California

  10. The Surface Tension of Quark Matter in a Geometrical Approach

    E-Print Network [OSTI]

    Marcus B. Pinto; Volker Koch; Jorgen Randrup

    2012-07-21T23:59:59.000Z

    The surface tension of quark matter plays a crucial role for the possibility of quark matter nucleation during the formation of compact stellar objects, because it determines the nucleation rate and the associated critical size. However, this quantity is not well known and the theoretical estimates fall within a wide range, $\\gamma_0 \\approx 5-300 MeV/fm^2$. We show here that once the equation of state is available one may use a geometrical approach to obtain a numerical value for the surface tension that is consistent with the model approximations adopted. We illustrate this method within the two-flavor linear \\sigma model and the Nambu--Jona-Lasinio model with two and three flavors. Treating these models in the mean-field approximation, we find $\\gamma_0 \\approx 7-30 MeV/fm^2$. Such a relatively small surface tension would favor the formation of quark stars and may thus have significant astrophysical implications. We also investigate how the surface tension decreases towards zero as the temperature is raised from zero to its critical value.

  11. Gas turbine vane platform element

    DOE Patents [OSTI]

    Campbell, Christian X. (Oviedo, FL); Schiavo, Anthony L. (Oviedo, FL); Morrison, Jay A. (Oviedo, FL)

    2012-08-28T23:59:59.000Z

    A gas turbine CMC shroud plate (48A) with a vane-receiving opening (79) that matches a cross-section profile of a turbine vane airfoil (22). The shroud plate (48A) has first and second curved circumferential sides (73A, 74A) that generally follow the curves of respective first and second curved sides (81, 82) of the vane-receiving opening. Walls (75A, 76A, 77A, 78A, 80, 88) extend perpendicularly from the shroud plate forming a cross-bracing structure for the shroud plate. A vane (22) may be attached to the shroud plate by pins (83) or by hoop-tension rings (106) that clamp tabs (103) of the shroud plate against bosses (105) of the vane. A circular array (20) of shroud plates (48A) may be assembled to form a vane shroud ring in which adjacent shroud plates are separated by compressible ceramic seals (93).

  12. Unbonded Post Tensioned Concrete in Fire: A Review of Data from Furnace Tests and Real Fires 

    E-Print Network [OSTI]

    Gales, John; Bisby, Luke; Gillie, Martin

    The fire-safe design of concrete structures which incorporate post-tensioned prestressing tendons has recently been the subject of debate within the structural engineering community, particularly when unbonded post-tensioned ...

  13. Bucket platform cooling scheme and related method

    DOE Patents [OSTI]

    Abuaf, Nesim (Lincoln City, OR); Barb, Kevin Joseph (Halfmoon, NY); Chopra, Sanjay (Greenville, SC); Kercher, David Max (Ipswich, MA); Kellock, Iain Robertson (Simpsonville, SC); Lenahan, Dean Thomas (Cincinnati, OH); Nellian, Sankar (Mauldin, SC); Starkweather, John Howard (Sharonville, OH); Lupe, Douglas Arthur (Ballston Lake, NY)

    2002-01-01T23:59:59.000Z

    A turbine bucket includes an airfoil extending from a platform, having high and low pressure sides; a wheel mounting portion; a hollow shank portion located radially between the platform and the wheel mounting portion, the platform having an under surface. An impingement cooling plate is located in the hollow shank portion, spaced from the under surface, and the impingement plate is formed with a plurality of impingement cooling holes therein.

  14. Sandia National Laboratories: hydrodynamic modeling platform...

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

    modeling platform SNL-EFDC Upgrades to SNL-EFDC: A Tool to Balance Marine Hydrokinetic Energy Generation Efficiency with Environmental Response On June 26, 2014, in Computational...

  15. A Dynamic Platform for Runtime Adaptation

    E-Print Network [OSTI]

    Pham, Hubert

    We present a middleware platform for assembling pervasive applications that demand fault-tolerance and adaptivity in distributed, dynamic environments. Unlike typical adaptive middleware approaches, in which sophisticated ...

  16. Economic Analysis of Policy Effects Analysis Platform

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

    Economic Analysis of Policy Effects Analysis Platform March 24, 2015 Jason Hansen, PhD Idaho National Laboratory This presentation does not contain any proprietary, confidential,...

  17. Electrochemical characterization and time-variant structural reliability assessment of post-tensioned, segmental concrete bridges 

    E-Print Network [OSTI]

    Pillai Gopalakrishnan, Radhakris

    2010-07-14T23:59:59.000Z

    Exposure Conditions- Results ............................................................................................................. 263? 9.4.1.? Step CA-1: Develop probabilistic model for tension capacity of strands under CA and NV conditions... Surface, Corrosion Characteristics, and Residual Tension Capacity. ....................................................................................... 159? Figure 6-8. Tension Capacities of Unstressed Strands Exposed to NV and PV Conditions...

  18. hal00272925, SURFACE TENSION IN THE DILUTE ISING MODEL. THE WULFF

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    hal­00272925, version 1 ­ 14 Apr 2008 SURFACE TENSION IN THE DILUTE ISING MODEL. THE WULFF CONSTRUCTION. MARC WOUTS Abstract. We study the surface tension and the phenomenon of phase coexistence in probability (with respect to random couplings) of surface tension and analyze its large deviations : upper

  19. Computation of Axisymmetric Suction Flow Through Porous Media in the Presence of Surface Tension

    E-Print Network [OSTI]

    Bigelow, Stephen

    Computation of Axisymmetric Suction Flow Through Porous Media in the Presence of Surface Tension-mail: hdc@math.ucsb.edu; hsi@us.oracle.com The e#11;ect of small surface tension on a class of axi for this type of ows. Through accurate computations, it is shown that, in the presence of small surface tension

  20. Journal of Statistical Physics, VoL 33, No. 1, 1983 Surface Tension and Phase Coexistence

    E-Print Network [OSTI]

    Lebowitz, Joel

    Journal of Statistical Physics, VoL 33, No. 1, 1983 Surface Tension and Phase Coexistence investigate the surface tension between coexisting phases of general discrete lattice systems. In particular the different phases need not be connected by any symmetry, We prove the positivity of the surface tension

  1. Effective Darcy-scale contact angles in porous media imbibing solutions of various surface tensions

    E-Print Network [OSTI]

    Selker, John

    Effective Darcy-scale contact angles in porous media imbibing solutions of various surface tensions was to develop and test a methodology to determine whether these surface tension effects predictably alter of 25° for the NaNO3 solution solely on the basis of surface tension contrast. The results of this study

  2. GLOBAL EXISTENCE FOR A TRANSLATING NEAR-CIRCULAR HELE-SHAW BUBBLE WITH SURFACE TENSION

    E-Print Network [OSTI]

    Tanveer, Saleh

    GLOBAL EXISTENCE FOR A TRANSLATING NEAR-CIRCULAR HELE-SHAW BUBBLE WITH SURFACE TENSION J. YE1 AND S for any nonzero surface tension despite the fact that a local planar approximation near the front problem, Dissipative equations, Hele-Shaw prob- lem, Translating bubbles, Surface tension Mathematics

  3. Stationary free surface viscous ows without surface tension in three dimensions

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Stationary free surface viscous ows without surface tension in three dimensions Frederic Abergel owing down a three dimensional channel. In the absence of surface tension, we prove the existence is not elliptic when surface tension is neglected. Hence, analysis such as that made in [4] or [17] fails

  4. SURFACE TENSION AND WULFF SHAPE FOR A LATTICE MODEL WITHOUT SPIN FLIP SYMMETRY

    E-Print Network [OSTI]

    SURFACE TENSION AND WULFF SHAPE FOR A LATTICE MODEL WITHOUT SPIN FLIP SYMMETRY T. BODINEAU AND E. PRESUTTI Abstract. We propose a new definition of surface tension and check it in a spin model on the phase transitions line and prove: (i) existence of the surface tension in the thermodynamic limit

  5. Surface layering of liquids: Is surface tension the dominant factor? Oleg Shpyrko,1

    E-Print Network [OSTI]

    Fukuto, Masafumi

    Surface layering of liquids: Is surface tension the dominant factor? Oleg Shpyrko,1 Masafumi Fukuto near a hard flat surface and at first it is tempt- ing to think that the large surface tension that the free surface of water, which has nearly the same surface tension as K, does not exhibit SL features

  6. The effect of surface tension on the Moore singularity of vortex sheet dynamics

    E-Print Network [OSTI]

    Fontelos, Marco

    The effect of surface tension on the Moore singularity of vortex sheet dynamics F. de la Hoz , M's singularities by surface tension in the evolution of vortex sheets and its dependence on Weber number (which is inversely proportional to surface tension coefficient). The curvature of the vortex sheet, instead

  7. Surface tension of amorphous polymer lms Thorsten Hapke, Gerald Patzold, and Dieter W. Heermann

    E-Print Network [OSTI]

    Heermann, Dieter W.

    Surface tension of amorphous polymer lms Thorsten Hapke, Gerald Patzold, and Dieter W. Heermann study the surface tension for thin, amorphous polymer lms by means of computer simulation. In the framework of molecular dynamics, we present surface tension measurements via the uctuation spectrum

  8. Numerical Analysis of Cell Deformation of Twophase Flow with Discontinuous Viscosity and Nonlinear Surface Tension

    E-Print Network [OSTI]

    ­linear Surface Tension Zhilin Li and Sharon Lubkin Center For Research in Scientific Computation & Department equations, cell deformation, non­linear surface tension, jump conditions, interface, discontinuous and non boundary separating two fluids that have equal or different viscosity and non­linear surface tension

  9. Scaling law in liquid drop coalescence driven by surface tension Mingming Wua)

    E-Print Network [OSTI]

    Cubaud, Thomas

    Scaling law in liquid drop coalescence driven by surface tension Mingming Wua) Department experimental results on the coalescence of two liquid drops driven by surface tension. Using a high speed that such scaling law is robust when using fluids of different viscosities and surface tensions. The prefactor

  10. Surface layering of liquids: The role of surface tension Oleg Shpyrko,1

    E-Print Network [OSTI]

    Ocko, Ben

    Surface layering of liquids: The role of surface tension Oleg Shpyrko,1 Masafumi Fukuto,1 Peter and alloys are always layered, regardless of composition and surface tension; a result supported by three, for the liquid-vapor interface it is tempting to think that the large surface tension of liquid metals such as Hg

  11. Internal geophysics (Physics of Earth's interior) Jump conditions and dynamic surface tension at permeable

    E-Print Network [OSTI]

    Internal geophysics (Physics of Earth's interior) Jump conditions and dynamic surface tension of momentum across the interface, a possibly anisotropic surface tension and terms including an inter- face equals the jump of pressure; and in the presence of surface tension defined as a capillary action due

  12. A contact theory for surface tension driven systems Roger A. Sauer 1

    E-Print Network [OSTI]

    A contact theory for surface tension driven systems Roger A. Sauer 1 Aachen Institute for Advanced description for the contact of surface tension driven sys- tems. The example system of a liquid droplet liquids or two solids in contact. The surface kinematics, essential to the modeling of surface tension

  13. A front-tracking algorithm for accurate representation of surface tension

    E-Print Network [OSTI]

    Frey, Pascal

    A front-tracking algorithm for accurate representation of surface tension Stephane Popinet particularly, we focus our attention on obtaining an accurate description of the surface-tension terms and the associated pressure jump. We consider the stationary Laplace solution for a bub- ble with surface tension

  14. Geometric Binding Site Design for Surface-Tension Driven Self-Assembly

    E-Print Network [OSTI]

    Geometric Binding Site Design for Surface-Tension Driven Self-Assembly Xiaorong Xiong, Sheng 98195-2500 Email: xrxiong@u.washington.edu Abstract-- Surface-tension driven self-assembly techniques-assembly, micro assembly, MEMS, hy- drophobic, hydrophilic, surface energy, surface tension force, binding site

  15. Implicit Surface Tension Formulation with a Lagrangian Surface mesh on an Eulerian Simulation Grid

    E-Print Network [OSTI]

    Thrun, Sebastian

    Implicit Surface Tension Formulation with a Lagrangian Surface mesh on an Eulerian Simulation Grid framework for forces on a Lagrangian mesh to the case of surface tension force, which when treated explicitly leads to a tight t = O(x3/2 ) time step restriction. By applying surface tension as an implicit

  16. An accurate adaptive solver for surface-tension-driven interfacial flows

    E-Print Network [OSTI]

    Frey, Pascal

    An accurate adaptive solver for surface-tension-driven interfacial flows Stéphane Popinet National Volume-Of- Fluid interface representation, balanced-force continuum-surface-force surface tension is shown to recover exact equilibrium (to machine accuracy) between surface- tension and pressure gradient

  17. Surface Tension of Electrolyte Interfaces: Ionic Specificity within a Field-Theory Approach

    E-Print Network [OSTI]

    Andelman, David

    Surface Tension of Electrolyte Interfaces: Ionic Specificity within a Field-Theory Approach Tomer, 1000 Ljubljana, Slovenia (Dated: November 19, 2014) We study the surface tension of ionic solutions expansion beyond the mean-field result. We calculate the excess surface tension and obtain analytical

  18. On the theory of type-I superconductor surface tension and twinning-plane-superconductivity

    E-Print Network [OSTI]

    Boyer, Edmond

    447 On the theory of type-I superconductor surface tension and twinning-plane-superconductivity T du paramètre de Landau-Ginsburg 03BA est trouvée pour la tension de surface des supraconducteurs de. Abstract. 2014 A correction is found to the surface tension in type-I superconductors which is proportional

  19. Marangoni convection induced by a nonlinear temperature-dependent surface tension

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    23 Marangoni convection induced by a nonlinear temperature-dependent surface tension A. Cloot and G'instabilité de Marangoni dans une mince lame horizontale de fluide lorsque la tension de surface est une fonction ofthe surface- tension with respect to the temperature is studied. This behaviour is typical of some

  20. A continuous surface tension force formulation for diffuse-interface models

    E-Print Network [OSTI]

    Frey, Pascal

    A continuous surface tension force formulation for diffuse-interface models Junseok Kim October 2004 Available online 30 November 2004 Abstract We present a new surface tension force formulation field because pressure includes the gradient terms resulting from the modified surface tension term

  1. Surface tension-driven flow outside a slender wedge with an application to the inviscid

    E-Print Network [OSTI]

    Billingham, John

    Surface tension-driven flow outside a slender wedge with an application to the inviscid coalescence the action of surface tension. As noted by Keller and Miksis (1983), a similarity scaling is available, surface tension-driven flow in a fluid wedge was first studied by Keller and Miksis (1983), who noted

  2. On the surface tension of directed linear polymers V. B. Priezzhev and S. A. Terletsky

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    599 On the surface tension of directed linear polymers V. B. Priezzhev and S. A. Terletsky Joint 03C13/2 coïncide avec celle obtenue pour la tension de surface d'un modèle isotrope par des arguments properties [1-3]. When p is large, the surface tension depends on the intermolecular interaction

  3. A splitting method for numerical simulation of free surface flows of incompressible fluids with surface tension

    E-Print Network [OSTI]

    Olshanskii, Maxim A.

    with surface tension Kirill D. Nikitin Maxim A. Olshanskii Kirill M. Terekhov Yuri V. Vassilevski§ Abstract to surface tension forces. The method splits one time step into a semi-Lagrangian treatment of the surface models a free surface flow of viscous incompressible fluid subject to surface tension forces. Further

  4. Henry's law, surface tension, and surface adsorption in dilute binary mixtures

    E-Print Network [OSTI]

    Henry's law, surface tension, and surface adsorption in dilute binary mixtures Akira Onukia. The solute partitioning between gas and liquid Henry's law and the surface tension change are discussed fraction X and the temperature-derivative / T cx,p of the surface tension at fixed pressure p

  5. MOLECULARPHYSICS, 1981, VOL. 43, No. 5, 1035-1041 Surface tension of a molecular fluid

    E-Print Network [OSTI]

    Grant, Martin

    MOLECULARPHYSICS, 1981, VOL. 43, No. 5, 1035-1041 Surface tension of a molecular fluid Many body for surface tension in a dense molecular fluid with an arbitrary many body interaction. This formula reduces. These last two expressions are analogous to the simple fluid surface tension for- mulas of Jhon, Desai

  6. Surface tension of a Lennard-Jones liquid under supersaturation Songnian He and Phil Attard*

    E-Print Network [OSTI]

    Attard, Phil

    Surface tension of a Lennard-Jones liquid under supersaturation Songnian He and Phil Attard* School A formally exact Kirkwood­Buff virial formula for the surface tension of a supersaturated interface-vapor interface. The Kirkwood­Buff results for the supersaturated surface tension are found to be in reasonable

  7. TOWARDS OPTIMAL DESIGNS FOR SELF-ALIGNMENT IN SURFACE TENSION DRIVEN MICRO-ASSEMBLY

    E-Print Network [OSTI]

    TOWARDS OPTIMAL DESIGNS FOR SELF-ALIGNMENT IN SURFACE TENSION DRIVEN MICRO-ASSEMBLY Sheng, Seattle, WA 98195-2500 ABSTRACT Fluidic self-assembly driven by surface tension force has demonstrated-assembly using surface tension as driving force has been shown to provide accurate positioning between parts

  8. Monte Carlo simulation methodology of the ghost interface theory for the planar surface tension

    E-Print Network [OSTI]

    Attard, Phil

    Monte Carlo simulation methodology of the ghost interface theory for the planar surface tension October 2003 A novel ``ghost interface'' expression for the surface tension of a planar liquid coexisting phases. Results generated from the ghost interface theory for the surface tension are presented

  9. Traveling Waves from the Arclength Parameterization: Vortex Sheets with Surface Tension

    E-Print Network [OSTI]

    Wright, J. Douglas

    Traveling Waves from the Arclength Parameterization: Vortex Sheets with Surface Tension Benjamin for the vortex sheet with surface tension. We use the angle- arclength description of the interface rather than prove that there exist traveling vortex sheets with surface tension bifurcating from equilibrium. We

  10. Study of the surface tension of polymer solutions: theory and experiments in theta solvent conditions

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1035 Study of the surface tension of polymer solutions: theory and experiments in theta solvent interest for experimental measurements. In a previous paper [ 11 ], the surface tension of semi Cedex 05, France (Reçu le 24 fevrier 1983, accepté le 30 mai 1983) Resumé. 2014 La tension superficielle

  11. Surface tension of electrolytes: Hydrophilic and hydrophobic ions near an interface

    E-Print Network [OSTI]

    Surface tension of electrolytes: Hydrophilic and hydrophobic ions near an interface Akira Onukia layer. We also derive a general expression for the surface tension of electrolyte systems, which. DOI: 10.1063/1.2936992 I. INTRODUCTION It has long been known that the surface tension of a water

  12. Accurate representation of surface tension using the level contour reconstruction method

    E-Print Network [OSTI]

    Frey, Pascal

    Accurate representation of surface tension using the level contour reconstruction method Seungwon methods for two-phase flows with surface tension which use fixed Eulerian grids occur at the two extremes surface tension forces. We present improvements to the interface reconstruction procedure in the level

  13. Curvature-Dependent Surface Tension of a Growing Droplet Michael P. Moody and Phil Attard

    E-Print Network [OSTI]

    Attard, Phil

    Curvature-Dependent Surface Tension of a Growing Droplet Michael P. Moody and Phil Attard School-vapor interfaces. It is shown that the surface tension decreases approximately linearly with the supersaturation ratio and that it vanishes at the spinodal. The effect leads to a curvature-dependent surface tension

  14. Semi-implicit surface tension formulation with a Lagrangian surface mesh on an Eulerian simulation grid

    E-Print Network [OSTI]

    Frey, Pascal

    Semi-implicit surface tension formulation with a Lagrangian surface mesh on an Eulerian simulation mesh to the case of a surface tension force, which when treated explicitly leads to a tight time step restriction. By applying surface tension as a semi-implicit Lagrangian force, the resulting method benefits

  15. ORIGINAL PAPER On the Role of the Difference in Surface Tensions Involved

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ORIGINAL PAPER On the Role of the Difference in Surface Tensions Involved in the Allosteric was to develop the relationship between membrane surface tension, and the allosteric balance in a difference in surface tensions that is involved in the creation of a reservoir of intracellular vesicles

  16. Surface tension effects on adiabatic gasliquid flow across micro pillars Santosh Krishnamurthy, Yoav Peles *

    E-Print Network [OSTI]

    Peles, Yoav

    Surface tension effects on adiabatic gas­liquid flow across micro pillars Santosh Krishnamurthy s t r a c t The effect of surface tension on adiabatic two-phase flow across a bank of 100 lm diameter was developed to account for surface tension force. In addition, a modified form of Chisholm correlation

  17. A New Incompressibility Discretization for a Hybrid Particle MAC Grid Representation with Surface Tension

    E-Print Network [OSTI]

    Fedkiw, Ron

    implicit surface tension for our novel hybrid discretization, we demonstrate preliminary results for both. Surface tension forces exacerbate the situation by imposing a strict t = O(x3/2 ) time step restriction formulation of surface tension by looking at the changes of curvature over time. This was simplified in [26

  18. Towards the zero-surface-tension limit in granular fingering instability

    E-Print Network [OSTI]

    Loss, Daniel

    LETTERS Towards the zero-surface-tension limit in granular fingering instability XIANG CHENG*, LEI Hele­Shaw system to explore the zero-surface-tension property of granular `fluids'16 . We demonstrate-unrealizable singular hydrodynamics predicted in the zero-surface-tension limit of normal fluid fingering2,17­23 . Above

  19. Stationary free surface viscous flows without surface tension in three dimensions

    E-Print Network [OSTI]

    Boyer, Edmond

    Stationary free surface viscous flows without surface tension in three dimensions Frederic Abergel dimensional channel. In the absence of surface tension, we prove the existence of a unique stationary solution is not elliptic when surface tension is neglected. Hence, analysis such as that made in [4] or [17] fails

  20. A mean field approach for computing solid-liquid surface tension for nanoscale interfaces

    E-Print Network [OSTI]

    Nielsen, Steven O.

    A mean field approach for computing solid-liquid surface tension for nanoscale interfaces Chi are largely determined by the solid-liquid surface tension. This is especially true for nanoscale systems with high surface area to volume ratios. While experimental techniques can only measure surface tension

  1. The singularity at the tip of the rising plane bubble: The case of nonzero surface tension

    E-Print Network [OSTI]

    Daripa, Prabir

    The singularity at the tip of the rising plane bubble: The case of nonzero surface tension Prabir pointed bubble in the presenceof surface tension. These bubbles have been recently obtained by Vanden to find the apexangle as a function of the speedof the bubbles for a fixed value of surface tension

  2. Surface tensions and surface potentials of acid solutions Alexandre P. dos Santos and Yan Levina

    E-Print Network [OSTI]

    Levin, Yan

    Surface tensions and surface potentials of acid solutions Alexandre P. dos Santos and Yan Levina October 2010 A theory is presented which allows us to quantitatively calculate the excess surface tension is quantitatively accurate for surface tensions and is qualitative for electrostatic potential difference across

  3. A justification for the thin film approximation of Stokes flow with surface tension

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    A justification for the thin film approximation of Stokes flow with surface tension M. G¨unther 1.prokert@tue.nl Abstract In the free boundary problem of Stokes flow driven by surface tension, we pass to the limit by surface tension is considered, the type of the problem changes significantly: while in the general case

  4. Time-independent square patterns in surface-tension-driven Benard convection

    E-Print Network [OSTI]

    Texas at Austin. University of

    Time-independent square patterns in surface-tension-driven Be´nard convection Michael F. Schatza The transition between hexagonal and square patterns is investigated in laboratory experiments on surface-tension, the transition from hexagons to other patterns was unexplored for the surface-tension-driven regime of Be

  5. Equilibrium behavior of sessile drops under surface tension, applied external fields, and material variations

    E-Print Network [OSTI]

    Shapiro, Benjamin

    Equilibrium behavior of sessile drops under surface tension, applied external fields, and material properties such as dielectric constants, resistivities, and surface tension coefficients. The analysis energy storage in the liquid, will lead to 1/R ``line-tension''-type terms if and only if the energy

  6. SURFACE TENSION AND DEFORMATIONS OF MEMBRANE STRUCTURES : RELATION TO TWO-DIMENSIONAL PHASE TRANSITIONS

    E-Print Network [OSTI]

    Boyer, Edmond

    1099 SURFACE TENSION AND DEFORMATIONS OF MEMBRANE STRUCTURES : RELATION TO TWO-DIMENSIONAL PHASE les molécules sont en contact avec un réservoir. Dans le premier cas, la tension de surface est nulle tension de surface finie et les fluctuations sont très réduites. Ce résultat est en accord avec des

  7. Apparatus producing constant cable tension for intermittent demand

    DOE Patents [OSTI]

    Lauritzen, T.

    1984-05-23T23:59:59.000Z

    This invention relates to apparatus for producing constant tension in cable or the like when it is unreeled and reeled from a drum or spool under conditions of intermittent demand. The invention is particularly applicable to the handling of superconductive cable, but the invention is also applicable to the unreeling and reeling of other strands, such as electrical cable, wire, cord, other cables, fish line, wrapping paper and numerous other materials.

  8. Operationalization of Learning Scenarios on Open and Distance Learning platforms: the case of the Moodle Platform

    E-Print Network [OSTI]

    Laforcade, Pierre

    Operationalization of Learning Scenarios on Open and Distance Learning platforms: the case of the Moodle Platform Aymen Abedmouleh, Lahcen Oubahssi, Pierre Laforcade and Christophe Choquet Université du of scenarios on learning platforms. We propose an approach based on the explicitation and the formalization

  9. Platform Based Designs for Future MPSoC Architectures This paper describes our communication centric platform

    E-Print Network [OSTI]

    Arslan, Tughrul

    Platform Based Designs for Future MPSoC Architectures ABSTRACT This paper describes our communication centric platform based designs for future multi-processor system-on-chip (MPSoC) architectures. The proposed platforms have built in controller, thus making the heterogeneous IPs (reconfigurable, fixed

  10. Interfacial tension between aluminum and chloride-fluoride melts

    SciTech Connect (OSTI)

    Silny, A. [Slovak Academy of Sciences, Bratislava (Slovakia). Inst. of Inorganic Chemistry] [Slovak Academy of Sciences, Bratislava (Slovakia). Inst. of Inorganic Chemistry; Utigard, T.A. [Univ. of Toronto, Ontario (Canada). Dept. of Metallurgy and Materials Science] [Univ. of Toronto, Ontario (Canada). Dept. of Metallurgy and Materials Science

    1996-11-01T23:59:59.000Z

    Scrap and recycled aluminum have to be remelted and refined before being made into useful new products. This often involves melting the aluminum under a molten salt cover in order to prevent oxidation and to enhance the coalescence and recovery of the molten metal. A technique was developed for the measurement of the interfacial tension between liquid metals and molten salts at elevated temperatures. The technique is based on the measurement of the capillary depression occurring when a capillary, which is moved vertically down through the molten salt layer, passes through the salt/metal interface. The depression is measured by simultaneous video recording of the immersion height of the alumina capillary and the position of a liquid meniscus in a horizontal tube connected to the alumina capillary. The interfacial tension was measured for (a) aluminum and an equimolar melt of NaCl + KCl with several salt additions at 1,000 K, (b) aluminum and NaCl + NaF at 1,123 K, and (c) aluminum and NaCl + KF at 1,123 K. It was found that the interfacial tension decreases with increasing amount of NaF, increases with the increasing amount of MgCl{sub 2} additions, remains unchanged with AlF{sub 3} additions, and slightly decreases with the addition of MgF{sub 2} and Na{sub 3}AlF{sub 6}.

  11. Reconciling Components and Services The Apam Component-Service Platform

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Reconciling Components and Services The Apam Component-Service Platform Jacky Estublier, German as with SOC. No platform today satisfies both needs. This paper presents the Component-Service model-service platform. Keywords-Service; CBSE, SOC, SOA, service platform, component platform, adaptability . I

  12. The OSIMIS Platform: Making OSI Management Simple

    E-Print Network [OSTI]

    Bhatti, Saleem N.

    and SNMP [Pav93a] while a similar approach for integrating OSI management and the OMG CORBA frame- work1 The OSIMIS Platform: Making OSI Management Simple George Pavlou, Kevin McCarthy, Saleem Bhatti.ucl.ac.uk Abstract The OSIMIS (OSI Management Information Service) platform provides the foundation for the quick

  13. Inorganic Nanotubes: A Novel Platform for Nanofluidics

    E-Print Network [OSTI]

    Yang, Peidong

    Inorganic Nanotubes: A Novel Platform for Nanofluidics JOSHUA GOLDBERGER, RONG FAN, AND PEIDONG are being developed for the synthesis of inorganic nanotubes, a novel platform for nanofluidics. Single modulation of ionic conductance. These nanofluidic devices have been further dem- onstrated to be useful

  14. Integrating Neuromuscular and Cyber Systems for Neural Control of Artificial Legs

    E-Print Network [OSTI]

    Yang, Qing "Ken"

    and computer system is essential. This integration leads to a cyber- physical system (CPS), in which a complex (CPS) for neurally controlled artificial legs. The key to the new CPS system is the neural

  15. Data report: Permeability measurements under confining pressure, Legs 315 and 316, Nankai Thierry REUSCHLE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Data report: Permeability measurements under confining pressure, Legs 315 and 316, Nankai Trough level two cylindrical specimens (20 mm in diameter and 15 - 20 mm in length) were drilled out

  16. Design, construction, and testing of a prototype robotic leg for controls experiments

    E-Print Network [OSTI]

    Countouris, Paula Marie

    2012-01-01T23:59:59.000Z

    The complex underactuated legs used in the FastRunner robot, designed by the Florida Institute for Human and Machine Cognition, are designed with multiple linkages and nonlinear springs to exploit the natural dynamics of ...

  17. Development of legged, wheeled, and hybrid rover mobility models to facilitate planetary surface exploration mission analysis

    E-Print Network [OSTI]

    McCloskey, Scott H. (Scott Haddon)

    2007-01-01T23:59:59.000Z

    This work discusses the Mars Surface Exploration (MSE) tool and its adaptation to model rovers featuring legged, wheeled, and hybrid mobility. MSE is a MATLAB based systems engineering tool that is capable of rapidly ...

  18. Locating hot and cold-legs in a nuclear powered steam generation system

    DOE Patents [OSTI]

    Ekeroth, D.E.; Corletti, M.M.

    1993-11-16T23:59:59.000Z

    A nuclear reactor steam generator includes a reactor vessel for heating water and a steam generator with a pump casing at the lowest point on the steam generator. A cold-leg pipe extends horizontally between the steam generator and the reactor vessel to return water from the steam generator to the reactor vessel. The bottom of the cold-leg pipe is at a first height above the bottom of the reactor vessel. A hot-leg pipe with one end connected to the steam generator and a second end connected to the reactor vessel has a first pipe region extending downwardly from the steam generator to a location between the steam generator and the reactor vessel at which a bottom of the hot-leg pipe is at a second height above the bottom of the reactor vessel. A second region extends from that location in a horizontal direction at the second height to the point at which the hot-leg pipe connects to the reactor vessel. A pump is attached to the casing at a location below the first and second heights and returns water from the steam generator to the reactor vessel over the cold-leg. The first height is greater than the second height and the bottom of the steam generator is at a height above the bottom of the reactor vessel that is greater than the first and second heights. A residual heat recovery pump is below the hot-leg and has an inlet line from the hot-leg that slopes down continuously to the pump inlet. 2 figures.

  19. Locating hot and cold-legs in a nuclear powered steam generation system

    DOE Patents [OSTI]

    Ekeroth, Douglas E. (Delmont, PA); Corletti, Michael M. (New Kensington, PA)

    1993-01-01T23:59:59.000Z

    A nuclear reactor steam generator includes a reactor vessel for heating water and a steam generator with a pump casing at the lowest point on the steam generator. A cold-leg pipe extends horizontally between the steam generator and the reactor vessel to return water from the steam generator to the reactor vessel. The bottom of the cold-leg pipe is at a first height above the bottom of the reactor vessel. A hot-leg pipe with one end connected to the steam generator and a second end connected to the reactor vessel has a first pipe region extending downwardly from the steam generator to a location between the steam generator and the reactor vessel at which a bottom of the hot-leg pipe is at a second height above the bottom of the reactor vessel. A second region extends from that location in a horizontal direction at the second height to the point at which the hot-leg pipe connects to the reactor vessel. A pump is attached to the casing at a location below the first and second heights and returns water from the steam generator to the reactor vessel over the cold-leg. The first height is greater than the second height and the bottom of the steam generator is at a height above the bottom of the reactor vessel that is greater than the first and second heights. A residual heat recovery pump is below the hot-leg and has an inlet line from the hot-leg that slopes down continuously to the pump inlet.

  20. An Evaluation of Sensing Platforms Used for Sensor Network Research

    E-Print Network [OSTI]

    Kansas, University of

    An Evaluation of Sensing Platforms Used for Sensor Network Research Daniel T. Fokum, Dr. Victor S to complex sensor nodes; which include fully configured computers. Several of these platforms were evaluated ................................................................................................................. 2 3 Evaluation of Sensor Platforms

  1. Roland Kruse, Tiedo Meyer: Vibration platform for the calibration of

    E-Print Network [OSTI]

    Vormann, Matthias

    Roland Kruse, Tiedo Meyer: Vibration platform for the calibration of optical sensors #12;Roland Kruse, Tiedo Meyer (Oldenburg University): Vibration platform for the calibration of optical sensors Meyer (Oldenburg University): Vibration platform for the calibration of optical sensors The project

  2. Platforms and Methods for Acoustic Detection and Monitoring of Key

    E-Print Network [OSTI]

    Hawai'i at Manoa, University of

    #12;Platforms and Methods for Acoustic Detection and Monitoring of Key Ecosystem Properties Nils Olav Handegard #12;· Introduction · Platforms carrying acoustics · Methods · Applications ­ What we have done · Applications ­ What we would like to do #12;· Introduction · Platforms carrying acoustics

  3. Auction Market System in Electronic Security Trading Platform

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    Auction Market System in Electronic Security Trading Platform Li Xihao Bielefeld Graduate School security trading platform Xetra oper- ated by Frankfurt Stock Exchange, we consider the Xetra auction. Keywords: agent-based modelling, computational market experiment, electronic security trading platform

  4. Towards Controlling the Acceptance Factors for a Collaborative Platform in

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Towards Controlling the Acceptance Factors for a Collaborative Platform in Engineering Design factor which are supposed to influence future users of a collaborative KM platform (Dimocode). At the end management systems (KMS) deployment. Keywords: acceptance factors, collaborative, platforms, engineering

  5. APPENDIX 1. Platform Synopses In this section,we give a brief summary of each of the California platforms.The platforms are listed from the most

    E-Print Network [OSTI]

    Love, Milton

    A-1 APPENDICES APPENDIX 1. Platform Synopses In this section,we give a brief summary of each of the California platforms.The platforms are listed from the most northwest, Irene, off Point Arguello, to Emmy in the southeast off Long Beach. Wherever possible, we have included the following information on each platform: (1

  6. Ocean Engng, Vol. 14, No. 3, pp. 201-231, 1987. 0029-8018/87 $3.00 + .00 Printed in Great Britain. 1987 Pergamon Journals Ltd.

    E-Print Network [OSTI]

    Kareem, Ahsan

    force and moment coefficients of a typical tension leg platform for various approach wind directions on these platforms consist of a mean and a fluctuating component. The mean wind effects result from mean wind force that can be computed from the mean wind velocity and an appropriate aerodynamic force coeffic~ nt

  7. Polymer-based platform for microfluidic systems

    DOE Patents [OSTI]

    Benett, William (Livermore, CA); Krulevitch, Peter (Pleasanton, CA); Maghribi, Mariam (Livermore, CA); Hamilton, Julie (Tracy, CA); Rose, Klint (Boston, MA); Wang, Amy W. (Oakland, CA)

    2009-10-13T23:59:59.000Z

    A method of forming a polymer-based microfluidic system platform using network building blocks selected from a set of interconnectable network building blocks, such as wire, pins, blocks, and interconnects. The selected building blocks are interconnectably assembled and fixedly positioned in precise positions in a mold cavity of a mold frame to construct a three-dimensional model construction of a microfluidic flow path network preferably having meso-scale dimensions. A hardenable liquid, such as poly (dimethylsiloxane) is then introduced into the mold cavity and hardened to form a platform structure as well as to mold the microfluidic flow path network having channels, reservoirs and ports. Pre-fabricated elbows, T's and other joints are used to interconnect various building block elements together. After hardening the liquid the building blocks are removed from the platform structure to make available the channels, cavities and ports within the platform structure. Microdevices may be embedded within the cast polymer-based platform, or bonded to the platform structure subsequent to molding, to create an integrated microfluidic system. In this manner, the new microfluidic platform is versatile and capable of quickly generating prototype systems, and could easily be adapted to a manufacturing setting.

  8. ESF Mine Power Center Platforms

    SciTech Connect (OSTI)

    T.A. Misiak

    2000-02-10T23:59:59.000Z

    The purpose and objective of this analysis is to structurally evaluate the existing Exploratory Studies Facility (ESF) mine power center (MPC) support frames and to design service platforms that will attach to the MPC support frames. This analysis follows the Development Plan titled ''Produce Additional Design for Title 111 Evaluation Report'' (CRWMS M&O 1999a). This analysis satisfies design recommended in the ''Title III Evaluation Report for the Surface and Subsurface Power System'' (CRWMS M&O 1999b, Section 7.6) and concurred with in the ''System Safety Evaluation of Title 111 Evaluation Reports Recommended Work'' (Gwyn 1999, Section 10.1.1). This analysis does not constitute a level-3 deliverable, a level-4 milestone, or a supporting work product. This document is not being prepared in support of the Monitored Geologic Repository (MGR) Site Recommendation (SR), Environmental Impact Statement (EIS), or License Application (LA) and should not be cited as a reference in the MGR SR, EIS, or LA.

  9. Platform Architecture A Two-Level Optimization Approach

    E-Print Network [OSTI]

    de Weck, Olivier

    2002-10-03T23:59:59.000Z

    Introduction to Platform Architecture in Products VW Golf 2 -Automotive Platforming Example:A Two-Level Optimization Approach 3 -Discussion

  10. An Extensible Sensing and Control Platform for Building Energy...

    Office of Environmental Management (EM)

    An Extensible Sensing and Control Platform for Building Energy Management An Extensible Sensing and Control Platform for Building Energy Management Lead Performer: Carnegie Mellon...

  11. An Analysis Platform for Multiscale Hydrogeologic Modeling with...

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

    An Analysis Platform for Multiscale Hydrogeologic Modeling with Emphasis on Hybrid Multiscale Methods. An Analysis Platform for Multiscale Hydrogeologic Modeling with Emphasis on...

  12. Multilayer Platform for Ultra-Low-Loss Waveguide Applications

    E-Print Network [OSTI]

    2012-01-01T23:59:59.000Z

    1, 2012 Multilayer Platform for Ultra-Low-Loss Waveguidepreviously demonstrated ultra-low-loss technologies. Groupet al. : MULTILAYER PLATFORM FOR ULTRA-LOW-LOSS WAVEGUIDE

  13. Apoferritin-based nanomedicine platform for drug delivery: equilibrium...

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

    nanomedicine platform for drug delivery: equilibrium binding study of daunomycin with DNA. Apoferritin-based nanomedicine platform for drug delivery: equilibrium binding study...

  14. Making a Hybrid Microfluidic Platform Compatible for In Situ...

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

    a Hybrid Microfluidic Platform Compatible for In Situ Imaging by Vacuum-Based Techniques. Making a Hybrid Microfluidic Platform Compatible for In Situ Imaging by Vacuum-Based...

  15. Web Machines : a new platform for application construction and execution

    E-Print Network [OSTI]

    Bryant, Robert A., M. Eng. Massachusetts Institute of Technology

    2009-01-01T23:59:59.000Z

    In today's world, computer application platforms are becoming increasingly important in providing positive application end-user and developer experiences. While there are many successful application platforms available, ...

  16. Surface tension, hydrophobicity, and black holes: The entropic connection

    E-Print Network [OSTI]

    David J. E. Callaway

    1996-01-23T23:59:59.000Z

    Recent calculations have shown that the linear proportionality between black hole entropy and area can be explained by performing a density matrix calculation for a massless free field theory. By applying the same formalism to an empirical fluid ``field theory,'' entropic quantities such as surface tension can be calculated in a novel fashion. Good agreement with experiment is obtained for a number of liquids. This approach may lead to a practical new technique for the evaluation of thermodynamic quantities important entropic components. Implications for the protein folding problem are discussed.

  17. Measurement of surface tension and viscosity by open capillary techniques

    DOE Patents [OSTI]

    Rye,Robert R. (Albuquerque, NM), Yost,Frederick G. (Cedar Crest, NM)

    1998-01-01T23:59:59.000Z

    An open-channel capillary is provided, having preferably a v-shaped groove in a flat wettable surface. The groove has timing marks and a source marker in which the specimen to be tested is deposited. The time of passage between the timing marks is recorded, and the ratio of surface tension .gamma. to viscosity .mu. is determined from the equation given below: ##EQU1## where h.sub.0 is the groove depth, .alpha. is the groove angle, .theta. is the liquid/solid contact angle, and t is the flow time. It has been shown by the

  18. Nonlinear FE analysis of cracks in tension and shear

    E-Print Network [OSTI]

    Kesse, G.; Lees, Janet M.

    2007-05-01T23:59:59.000Z

    Carbon FRP Shear Reinforcement. PhD thesis, University of Cambridge, UK, 2003. 3. Bazant Z. P. and Planas J. Fracture and Size Effect in Con- crete and Other Quasibrittle Materials. CRC Press, Boca Raton, Florida, 1998. Nonlinear FE analysis of cracks... of plain concrete to cyclic tension. ACI Materials Journal, 1987, 84, No. 5, 365–373. 9. Paulay T. and Loeber P. J. Shear transfer by aggregate inter- lock. ACI Special Publication, SP-42, 1974, 1, 1–14. 10. Houde J. and Mirza M. S. A finite element...

  19. Implementation of surface tension with wall adhesion effects in a three-dimensional finite element model for fluid flow

    E-Print Network [OSTI]

    Boyer, Edmond

    - 1 - Implementation of surface tension with wall adhesion effects in a three-dimensional finite element modelling of surface tension. The external stress vectors associated with surface tension a drop of liquid on a plane is treated. Keywords : surface tension, finite element method, average

  20. Cell Culture on MEMS Platforms: A Review

    E-Print Network [OSTI]

    Ni, Ming

    Microfabricated systems provide an excellent platform for the culture of cells, and are an extremely useful tool for the investigation of cellular responses to various stimuli. Advantages offered over traditional methods ...

  1. Digital Construction Platform: A Compound Arm Approach

    E-Print Network [OSTI]

    Spielberg, Nathan A.

    2014-01-01T23:59:59.000Z

    We introduce a novel large-scale Digital Construction Platform (DCP) for on-site sensing, analysis, and fabrication. The DCP is an in-progress research project consisting of a compound robotic arm system comprised of a ...

  2. High index contrast platform for silicon photonics

    E-Print Network [OSTI]

    Akiyama, Shoji, 1972-

    2004-01-01T23:59:59.000Z

    This thesis focuses on silicon-based high index contrast (HIC) photonics. In addition to mature fiber optics or low index contrast (LIC) platform, which is often referred to as Planar Lightwave Cirrcuit (PLC) or Silica ...

  3. Open vs. closed Apple music distribution platform

    E-Print Network [OSTI]

    Aye, Thida, S.M. Massachusetts Institute of Technology

    2008-01-01T23:59:59.000Z

    In this thesis, based on the example case study of the Apple iTunes-iPods platform technology, two simple models are analyzed to gain a better understanding of open vs. closed business models as management and market ...

  4. COMPONENTS, PLATFORMS, AND ARCHITECTURES Subthreshold Computing

    E-Print Network [OSTI]

    Texas at Arlington, University of

    as reducing resource consumption have become emerging trends in computing. As computers increase in speed Modeling the Energy Consumption of Distributed Applications A Comparative Study of Runtime Systems for COMPONENTS, PLATFORMS, AND ARCHITECTURES Subthreshold Computing Energy-Efficient Network

  5. Cloud Based Applications and Platforms (Presentation)

    SciTech Connect (OSTI)

    Brodt-Giles, D.

    2014-05-15T23:59:59.000Z

    Presentation to the Cloud Computing East 2014 Conference, where we are highlighting our cloud computing strategy, describing the platforms on the cloud (including Smartgrid.gov), and defining our process for implementing cloud based applications.

  6. Visualization of vibration experienced in offshore platforms

    E-Print Network [OSTI]

    Patrikalakis, Alexander Marinos Charles

    2010-01-01T23:59:59.000Z

    In this thesis, I design and evaluate methods to optimize the visualization of vortex-induced vibration (VIV) in marine risers. VIV is vibration experienced by marine risers in offshore drilling platforms due to ocean ...

  7. Surface Tension Adjustment in a Pseudo-Potential Lattice Boltzmann Model

    E-Print Network [OSTI]

    Hu, Anjie; Uddin, Rizwan

    2014-01-01T23:59:59.000Z

    Pseudo-potential lattice Boltzmann models have been widely applied in many multiphase simulations. However, most of these models still suffer from some drawbacks such as spurious velocities and untunable surface tension. In this paper, we aim to discuss the surface tension of a popular pseudo-potential model proposed by Kupershtokh et al., which has attracted much attention due to its simplicity and stability. The influence of a parameter on the surface tension in the model is analyzed. Based on the analysis, we proposed a method to adjust surface tension by changing the parameter in the model. However, the density distribution and the stability of the model also depend on the parameter. To adjust the surface tension independently, the pressure tensor modifying method is introduced and numerically tested. The simulation results show that, by applying the pressure tensor modifying method, the surface tension can be adjusted with little influence on the stability and density distributions.

  8. X-ray Scanner for ODP Leg 204: Drilling Gas Hydrates on Hydrate Ridge, Cascadia Continental Margin

    E-Print Network [OSTI]

    Freifeld, Barry; Kneafsey, Tim; Pruess, Jacob; Reiter, Paul; Tomutsa, Liviu

    2002-01-01T23:59:59.000Z

    International Conference of Gas Hydrates, Yokohama, Japan.Prospectus, Drilling Gas Hydrates On Hydrate Ridge, CascadiaLeg 204: Drilling Gas Hydrates on Hydrate Ridge, Cascadia

  9. The central role of line tension in the fusion of biological membranes

    E-Print Network [OSTI]

    M. Schick; K. Katsov; M. Mueller

    2005-04-21T23:59:59.000Z

    Recent progress in the fusion of biological membranes is reviewed to highlight the central role played by the line tension, which permits exquisite control of the process.

  10. Atlas: A Novel Kinematic Architecture for Six DOF Motion Platforms

    E-Print Network [OSTI]

    Hayes, John

    Atlas: A Novel Kinematic Architecture for Six DOF Motion Platforms M.J.D. HAYES, R.G. LANGLOIS alternative motion platform configurations and developed a novel concept that overcomes existing limitations. This paper presents an overview of the Atlas platform: a novel six DOF motion platform architecture

  11. A Multisensor Platform for Kinematic Track Surveying Thomas Wildi

    E-Print Network [OSTI]

    A Multisensor Platform for Kinematic Track Surveying Thomas Wildi HTA Burgdorf, Pestalozzistrasse Burgdorf developed a track surveying platform in co-operation with terra vermessungen AG, Switzerland of railway lines, tunnel profile measurements) the platform can be flexibly adapted. The platform is designed

  12. Resource Overbooking and Application Profiling in Shared Hosting Platforms

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Resource Overbooking and Application Profiling in Shared Hosting Platforms #3; Bhuvan Urgaonkar resources in shared hosting platforms running potentially antagonistic third­party applications. The primary platforms, to maximize the platform yield: the revenue generated by the available resources. We do

  13. Trusted Integrity Measurement and Reporting for Virtualized Platforms

    E-Print Network [OSTI]

    Ryan, Mark

    Trusted Integrity Measurement and Reporting for Virtualized Platforms (Work-in-Progress) Serdar of the whole set of platform components. It is, however, difficult to use this technology directly in virtualized platforms because of com- plexity and dynamic changes of platform components. In this paper, we

  14. Joining mechanism with stem tension and interlocked compression ring

    SciTech Connect (OSTI)

    James, Allister W.; Morrison, Jay A.

    2012-09-04T23:59:59.000Z

    A stem (34) extends from a second part (30) through a hole (28) in a first part (22). A groove (38) around the stem provides a non-threaded contact surface (42) for a ring element (44) around the stem. The ring element exerts an inward force against the non-threaded contact surface at an angle that creates axial tension (T) in the stem, pulling the second part against the first part. The ring element is formed of a material that shrinks relative to the stem by sintering. The ring element may include a split collet (44C) that fits partly into the groove, and a compression ring (44E) around the collet. The non-threaded contact surface and a mating distal surface (48) of the ring element may have conic geometries (64). After shrinkage, the ring element is locked onto the stem.

  15. A cinematographical analysis of the action of the lead leg in the flop high jump

    E-Print Network [OSTI]

    Smith, Carol J

    1984-01-01T23:59:59.000Z

    A CINEMATOGRAPHICAL ANALYSIS OF THE ACTION OF THE LEAD LEG IN THE FLOP HIGH JUMP A Thesis CAROL J. SMITH Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree o MASTER OF SCIENCE... August 1984 Major Subject: Physical Education A CINEMATOGRAPHICAL ANALYSIS OF THE ACTION OF THE LEAD LEG IN THE FLOP HIGH JUMP A Thesis by CAROL J. SMITH Approved as to style and content by: Lin s J. Dowell (Chairman of Committee) Homer Toison...

  16. Experience using EPICS on PC platforms

    SciTech Connect (OSTI)

    Hill, J.O. [Los Alamos National Lab., NM (United States); Kasemire, K.U. [Univ. Osnabruck (Germany). Fachbereich Physik

    1998-03-01T23:59:59.000Z

    The Experimental Physics and Industrial Control System (EPICS) has been widely adopted in the accelerator community. Although EPICS is available on many platforms, the majority of implementations have used UNIX workstations as clients, and VME- or VXI-based processors for distributed input output controllers. Recently, a significant portion of EPICS has been ported to personal computer (PC) hardware platforms running Microsoft`s operating systems, and also Wind River System`s real time vxWorks operating system. This development should significantly reduce the cost of deploying EPICS systems, and the prospect of using EPICS together with the many high quality commercial components available for PC platforms is also encouraging. A hybrid system using both PC and traditional platforms is currently being implemented at LANL for LEDA, the low energy demonstration accelerator under construction as part of the Accelerator Production of Tritium (APT) project. To illustrate these developments the authors compare their recent experience deploying a PC-based EPICS system with experience deploying similar systems based on traditional (UNIX-hosted) EPICS hardware and software platforms.

  17. Host-defense peptides isolated from the skin secretions of the Northern red-legged frog Rana aurora aurora

    E-Print Network [OSTI]

    Davidson, Carlos

    Host-defense peptides isolated from the skin secretions of the Northern red-legged frog Rana aurora aurora J. Michael Conlona,*, Agnes Sonnevendb , Carlos Davidsonc , Anni Demandtd , Thierry Jouennee-stimulated skin secretions of the Northern red-legged frog Rana aurora aurora and their primary structures

  18. Evidence from peptidomic analysis of skin secretions that the red-legged frogs, Rana aurora draytonii and

    E-Print Network [OSTI]

    Davidson, Carlos

    Evidence from peptidomic analysis of skin secretions that the red-legged frogs, Rana aurora draytonii and Rana aurora aurora, are distinct species J. Michael Conlon a, *, Nadia Al-Ghafari a , Laurent peptides Rana aurora Rana draytonii Skin secretions a b s t r a c t The northern red-legged frog Rana

  19. PHYSICAL REVIEW B 86, 195103 (2012) Dynamics of doublon-holon pairs in Hubbard two-leg ladders

    E-Print Network [OSTI]

    Dias, Luis Gregório

    PHYSICAL REVIEW B 86, 195103 (2012) Dynamics of doublon-holon pairs in Hubbard two-leg ladders Luis of holon-doublon pairs is studied in Hubbard two-leg ladders using the time-dependent density matrix of a doublon-holon pair. Two distinct regimes are identified. For weak interleg coupling, the results

  20. The effect of surface and interfacial tensions upon the recovery of oil by water flooding

    E-Print Network [OSTI]

    Guerrero, Erasmo Trevino

    1953-01-01T23:59:59.000Z

    THE EFFECT OF SURFACE AND INTERFACIAL TENSIONS UPON THE RECOVERY OF OIL BY WATER FLOODING A Dissertation By ERASMO T . GUERRERO Approved as to style and content by: J t Q J w & U 7 T Chsfirman of Cfommittee f Head of Department TABLE....................................................................................................... .......... 25 Surface and Interfacial Tensions..........................................................26 Adsorption............................... .................. . ........................................ .......... 31 Flow Tests...

  1. MIXITS : TENSIONS DISCURSIVES OU RUPTURE LINGUISTIQUE ? Pierre Fiala et Gabrielle Varro

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    qu'on utilise avec un sens technique Pierre Achard, La sociologie du langage, 1993 Prolongeant laMIXITÉS : TENSIONS DISCURSIVES OU RUPTURE LINGUISTIQUE ? Pierre Fiala et Gabrielle Varro Maison des : -------------------------------------------------------------------------------------------------------------------- Fiala Pierre et Varro Gabrielle , « Mixités : tensions discursives ou rupture linguistique ? » , Langage

  2. Disk-shaped Compact Tension Test for Plain Concrete A. Amirkhanian1

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Disk-shaped Compact Tension Test for Plain Concrete A. Amirkhanian1 , D. Spring1 , J. Roesler1 , K cracking prediction of concrete pavement systems. The single-edge notched beam test has been used energy in asphalt concrete using the disk-shaped compact tension (DCT) test. The benefit of this specimen

  3. Achieving tunable surface tension in the pseudopotential lattice Boltzmann modeling of multiphase flows

    E-Print Network [OSTI]

    Q. Li; K. H. Luo

    2013-10-14T23:59:59.000Z

    In this paper, we aim to address an important issue about the pseudopotential lattice Boltzmann (LB) model, which has attracted much attention as a mesoscopic model for simulating interfacial dynamics of complex fluids, but suffers from the problem that the surface tension cannot be tuned independently of the density ratio. In the literature, a multi-range potential was devised to adjust the surface tension [Sbragaglia et al., Phys. Rev. E 75, 026702 (2007)]. However, it was recently found that the density ratio of the system will be changed when the multi-range potential is employed to adjust the surface tension. A new approach is therefore proposed in the present work. The basic strategy is to add a source term to the LB equation so as to tune the surface tension of the pseudopotential LB model. The proposed approach can guarantee that the adjustment of the surface tension does not affect the mechanical stability condition of the pseudopotential LB model, and thus provides a separate control of the surface tension and the density ratio. Meanwhile, it still retains the mesoscopic feature and the computational simplicity of the pseudopotential LB model. Numerical simulations are carried out for stationary droplets, capillary waves, and droplet splashing on a thin liquid film. The numerical results demonstrate that the proposed approach is capable of achieving a tunable surface tension over a very wide range and can keep the density ratio unchanged when adjusting the surface tension.

  4. Fluctuation-induced dynamics of multiphase liquid jets with ultra-low interfacial tension

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Fluctuation-induced dynamics of multiphase liquid jets with ultra-low interfacial tension Alban with an ultra-low interfacial tension presents new opportunities to the control of flow morphologies perturbation; this demonstrates the importance of the inertial effects in flow control at ultra-low interfacial

  5. A Noninvasive Thin Film Sensor for Monitoring Oxygen Tension during in Vitro Cell Culture

    E-Print Network [OSTI]

    Raghavan, Srinivasa

    demonstrated how low oxygen levels lead to vasoocclusion in sickle cell anemia.7 Cancer cells that existA Noninvasive Thin Film Sensor for Monitoring Oxygen Tension during in Vitro Cell Culture Peter C of Maryland, College Park, Maryland 20742, and SAIC, Arlington, VA 22203 Oxygen tension in mammalian cell

  6. Surface Free Energies, Interfacial Tensions and Correlation Lengths of the ABF Models

    E-Print Network [OSTI]

    Pearce, Paul A.

    Surface Free Energies, Interfacial Tensions and Correlation Lengths of the ABF Models David L. O. Abstract The surface free energies, interfacial tensions and correlation lengths of the Andrews been established there are various quan- tities of physical interest, such as the surface free energies

  7. FINITE ELEMENT ANALYSIS OF THERMAL TENSIONING TECHNIQUES MITIGATING WELD BUCKLING DISTORTION

    E-Print Network [OSTI]

    Michaleris, Panagiotis

    FINITE ELEMENT ANALYSIS OF THERMAL TENSIONING TECHNIQUES MITIGATING WELD BUCKLING DISTORTION. This paper presents a finite element analysis model of the thermal tensioning technique. A series of finite by the finite element simulations, the residual stresses of large size and high heat input welds are reduced

  8. Tension of Conductor Under Concentrated Loads WongS.P.Yu*,P.

    E-Print Network [OSTI]

    Yu, Pei

    Tension of Conductor Under Concentrated Loads WongS.P.Yu*,P. P.W. International Inc. 5H4V5RCanada be found. This paper presents methodologies to compute conductor tension and static con-underproceduressolutionexactandapproximatebothusingspacedimensionalthreeinprofile centrated loads with different boundary conditions. Practical engineering examples from galloping demon

  9. Iso-Flux Tension Propagation Theory of Driven Polymer Translocation: The Role of Initial Configurations

    E-Print Network [OSTI]

    Jalal Sarabadani; Timo Ikonen; Tapio Ala-Nissila

    2014-09-30T23:59:59.000Z

    We investigate the dynamics of pore-driven polymer translocation by theoretical analysis and molecular dynamics (MD) simulations. Using the tension propagation theory within the constant flux approximation we derive an explicit equation of motion for the tension front. From this we derive a scaling relation for the average translocation time $\\tau$, which captures the asymptotic result $\\tau \\propto N_0^{1+\

  10. Molecular modelling and simulation of the surface tension of real quadrupolar fluids

    E-Print Network [OSTI]

    Stephan Werth; Katrin Stöbener; Peter Klein; Karl-Heinz Küfer; Martin Horsch; Hans Hasse

    2014-08-21T23:59:59.000Z

    Molecular modelling and simulation of the surface tension of fluids with force fields is discussed. 29 real fluids are studied, including nitrogen, oxygen, carbon dioxide, carbon monoxide, fluorine, chlorine, bromine, iodine, ethane, ethylene, acetylene, propyne, propylene, propadiene, carbon disulfide, sulfur hexafluoride, and many refrigerants. The fluids are represented by two-centre Lennard-Jones plus point quadrupole models from the literature. These models were adjusted only to experimental data of the vapour pressure and saturated liquid density so that the results for the surface tension are predictions. The deviations between the predictions and experimental data for the surface tension are of the order of 20 percent. The surface tension is usually overestimated by the models. For further improvements, data on the surface tension can be included in the model development. A suitable strategy for this is multi-criteria optimization based on Pareto sets. This is demonstrated using the model for carbon dioxide as an example.

  11. Surface tension model for surfactant solutions at the critical micelle concentration

    E-Print Network [OSTI]

    S. F. Burlatsky; V. V. Atrazhev; D. V. Dmitriev; V. I. Sultanov; E. N. Timokhina; E. A. Ugolkova; S. Tulyani; A. Vincitore

    2013-06-19T23:59:59.000Z

    A model for the limiting surface tension of surfactant solutions (surface tension at and above the critical micelle concentration, cmc) was developed. This model takes advantage of the equilibrium between the surfactant molecules on the liquid/vacuum surface and in micelles in the bulk at the cmc. An approximate analytical equation for the surface tension at the cmc was obtained. The derived equation contains two parameters, which characterize the intermolecular interactions in the micelles, and the third parameter, which is the surface area per surfactant molecule at the interface. These parameters were calculated using a new atomistic modeling approach. The performed calculations of the limiting surface tension for four simple surfactants show good agreement with experimental data (~30% accuracy). The developed model provides the guidance for design of surfactants with low surface tension values.

  12. Traffic information computing platform for big data

    SciTech Connect (OSTI)

    Duan, Zongtao, E-mail: ztduan@chd.edu.cn; Li, Ying, E-mail: ztduan@chd.edu.cn; Zheng, Xibin, E-mail: ztduan@chd.edu.cn; Liu, Yan, E-mail: ztduan@chd.edu.cn; Dai, Jiting, E-mail: ztduan@chd.edu.cn; Kang, Jun, E-mail: ztduan@chd.edu.cn [Chang'an University School of Information Engineering, Xi'an, China and Shaanxi Engineering and Technical Research Center for Road and Traffic Detection, Xi'an (China)

    2014-10-06T23:59:59.000Z

    Big data environment create data conditions for improving the quality of traffic information service. The target of this article is to construct a traffic information computing platform for big data environment. Through in-depth analysis the connotation and technology characteristics of big data and traffic information service, a distributed traffic atomic information computing platform architecture is proposed. Under the big data environment, this type of traffic atomic information computing architecture helps to guarantee the traffic safety and efficient operation, more intelligent and personalized traffic information service can be used for the traffic information users.

  13. Analysis and correlation of volcanic ash in marine sediments from the Peru Margin, Ocean Drilling Program Leg 201: explosive volcanic cycles of the north-central Andes

    E-Print Network [OSTI]

    Hart, Shirley Dawn

    2007-04-25T23:59:59.000Z

    : Fig. 1) of the eight sites studied from Leg 112 were reoccupied during ODP Leg 201 (northern transect Site 1227 and southern transect Sites 1228 and 1229 respectively). This thesis follows the style of Journal of Volcanology and Geothermal...

  14. A statistical study of the geological limits to Advanced Piston Coring: ODP Legs 101-149

    E-Print Network [OSTI]

    Lee, Yir-Der Eddy

    1995-01-01T23:59:59.000Z

    or porosity are more likely to lead to penetration refusal than others. The introduction of APC-129 (the upgrade of the APC), which was first used during ODP Leg 130 in 1990, improved the performance of APC coring in calcareous sediments. A pullout force...

  15. Object-oriented Dynamics Modeling for Legged Robot Trajectory Optimization and Control

    E-Print Network [OSTI]

    Stryk, Oskar von

    Object-oriented Dynamics Modeling for Legged Robot Trajectory Optimization and Control Robert. To facilitate the investigation of new concepts of nonlinear model-based optimization and control methods also-level specification of multibody dynamics models using component libraries serves as a basis for generation

  16. Bionic anklefoot prosthesis normalizes walking gait for persons with leg amputation

    E-Print Network [OSTI]

    Herr, Hugh

    Bionic ankle­foot prosthesis normalizes walking gait for persons with leg amputation Hugh M. Herr1 and have abnormal biomechanics compared with non-amputees. A bionic prosthesis has been developed the bionic prosthesis and using their own passive- elastic prosthesis to those of seven non-amputees during

  17. DESIGN OF A VARIABLE STIFFNESS LEG USING SHAPE MEMORY POLYMER COMPOSITES

    E-Print Network [OSTI]

    Collins, Emmanuel

    571 DESIGN OF A VARIABLE STIFFNESS LEG USING SHAPE MEMORY POLYMER COMPOSITES DUNCAN W. HALDANE materials called shape memory polymers. Shape Memory Polymers (SMPs) experience a several order of magnitude a SMP as the resin matrix, a shape memory polymer composite is formed. A shape memory polymer composite

  18. Retention of Butt-End Aluminum Leg Bands by Wild Turkeys

    E-Print Network [OSTI]

    Butler, Matthew J.

    Note Retention of Butt-End Aluminum Leg Bands by Wild Turkeys MATTHEW J. BUTLER,1,2 Department wild turkeys (Meleagris gallopavo intermedia) captured in Texas and Kansas, USA, 2000­2009. We examined 187 recaptured or harvested radiotagged wild turkeys to determine band retention and modeled band

  19. Bidirectional Seismic Behavior of Controlled Rocking Four-Legged Bridge Steel Truss Piers

    E-Print Network [OSTI]

    Bruneau, Michel

    Bidirectional Seismic Behavior of Controlled Rocking Four-Legged Bridge Steel Truss Piers Michael rocking bridge steel truss piers to three components of seismic excitation are presented in this paper. The controlled rocking approach for seismic protection allows a pier to uplift from its base, limiting the force

  20. Crawford:Apollo legAcy 6.24 A&G December 2012 Vol. 53

    E-Print Network [OSTI]

    Crawford, Ian

    Crawford:Apollo legAcy 6.24 A&G · December 2012 · Vol. 53 On the 40th anniversary of the last human expedition to the Moon, Ian Crawford reviews the scientific legacy of the Apollo programme and argues and Harrison "Jack" Schmitt of Apollo 17 left the lunar surface and returned safely to Earth. This anniversary

  1. A Proposal for Autotuning Linear AlgebraA Proposal for Autotuning Linear Algebra Routines on Multicore PlatformsRoutines on Multicore Platforms

    E-Print Network [OSTI]

    Giménez, Domingo

    on Multicore PlatformsRoutines on Multicore Platforms Javier Cuenca, Luis P. García Domingo Giménez Parallel Algebra Routines on Multicore PlatformsPlatforms 22 parallelparallelumum Introduction Algebra Routines on MulticoreA Proposal for Autotuning Linear Algebra Routines on Multicore PlatformsPlatforms

  2. Tension applied through the Dam1 complex promotes microtubule elongation: a direct mechanism for length control in

    E-Print Network [OSTI]

    Davis, Trisha N.

    Tension applied through the Dam1 complex promotes microtubule elongation: a direct mechanism tension to a model of the kinetochore-microtubule interface composed of the yeast Dam1 complex11-13 bound

  3. Pseudomonas fluorescens -A robust manufacturing platform

    E-Print Network [OSTI]

    Lebendiker, Mario

    Pseudomonas fluorescens -A robust manufacturing platform Reprinted from July/August 2004 Speciality at efficient- ly transporting single chain antibodies and other mammalian-derived proteins. In addition production. Dowpharma, a contract manufacturing services unit of Dow Chemical, has developed a manufacturing

  4. The Durham ELT adaptive optics simulation platform

    E-Print Network [OSTI]

    Alastair Basden; Timothy Butterley; Richard Myers; Richard Wilson

    2006-11-09T23:59:59.000Z

    Adaptive optics systems are essential on all large telescopes where image quality is important. These are complex systems with many design parameters requiring optimisation before good performance can be achieved. The simulation of adaptive optics systems is therefore necessary to categorise the expected performance. This paper describes an adaptive optics simulation platform, developed at Durham University, which can be used to simulate adaptive optics systems on the largest proposed future extremely large telescopes (ELTs) as well as current systems. This platform is modular, object oriented and has the benefit of hardware application acceleration which can be used to improve the simulation performance, essential for ensuring that the run time of a given simulation is acceptable. The simulation platform described here can be highly parallelised using parallelisation techniques suited for adaptive optics simulation, whilst still offering the user complete control while the simulation is running. Results from the simulation of a ground layer adaptive optics system are provided as an example to demonstrate the flexibility of this simulation platform.

  5. Platform for Hybrid Cloud Technical White Paper

    E-Print Network [OSTI]

    Chaudhuri, Surajit

    Platform for Hybrid Cloud Technical White Paper Published: September 2013 (updated) Applies to: SQL Server and Windows Azure Summary: Cloud computing brings a new paradigm shift in computing in the cloud with greater scale and flexibility. Microsoft SQL Server runs very well in the cloud environment

  6. Microfluidic Platforms for Capturing Circulating Tumor Cells

    E-Print Network [OSTI]

    Tang, William C

    Microfluidic Platforms for Capturing Circulating Tumor Cells Sweta Gupta, Allison C. Baker-cost microfluidic device that can be used to isolate and capture circulating tumor cells (CTCs) from whole blood. The device was made from polydimethylsiloxane (PDMS) consisting of a microfluidic channel with microposts

  7. A noncontacting technique for measuring surface tension of liquids C. Cinbis and B. T. Khuri-Yakub

    E-Print Network [OSTI]

    Khuri-Yakub, Butrus T. "Pierre"

    A noncontacting technique for measuring surface tension of liquids C. Cinbis and B. T. Khuri is the surface tension which acts to minimize the surface area of the liquid. Therefore, capillary wavesin of capillary wavesin order to mea- sure in siiu the surface tension of liquids. Current tech- niques of surface

  8. A PARALLEL LEVEL-SET APPROACH FOR TWO-PHASE FLOW PROBLEMS WITH SURFACE TENSION IN THREE SPACE

    E-Print Network [OSTI]

    Sminchisescu, Cristian

    A PARALLEL LEVEL-SET APPROACH FOR TWO-PHASE FLOW PROBLEMS WITH SURFACE TENSION IN THREE SPACE equations by the continuum surface force method. Surface tension is evaluated using a smoothed delta from the free surface. For the discretization of surface tension we need to apply a smoothing scheme

  9. SURFACE TENSION In the fall a fisherman's boat is often surrounded by fallen leaves that are lying on the

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    - 1 of 9 - SURFACE TENSION Definition In the fall a fisherman's boat is often surrounded by fallen force. Instead, the force balancing a leaf's weight arises because of the surface tension of the water. Surface tension is a property that allows the surface of a liquid to behave somewhat as a trampoline does

  10. Effect of surface tension on the acoustic radiation pressure-induced motion of the water-air interface

    E-Print Network [OSTI]

    Khuri-Yakub, Butrus T. "Pierre"

    Effect of surface tension on the acoustic radiation pressure-induced motion of the water to be a function of the surface tension. The time of mound formation measurementsin cleanwaterat low.Our objectiveisto investigatetheeffectsof surface tension on mound formation. We usea boundaryintegralmethodto

  11. hal-00272925,version1-14Apr2008 SURFACE TENSION IN THE DILUTE ISING MODEL. THE WULFF

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    hal-00272925,version1-14Apr2008 SURFACE TENSION IN THE DILUTE ISING MODEL. THE WULFF CONSTRUCTION. MARC WOUTS Abstract. We study the surface tension and the phenomenon of phase coexistence for the Ising respect to random couplings) of surface tension and analyze its large deviations : upper deviations occur

  12. Surface Tensions in NaCl-Water-Air Systems from MD Simulations Ranjit Bahadur, Lynn M. Russell,*, and Saman Alavi

    E-Print Network [OSTI]

    Russell, Lynn

    Surface Tensions in NaCl-Water-Air Systems from MD Simulations Ranjit Bahadur, Lynn M. Russell, Ottawa, Ontario K1A 0R6, Canada ReceiVed: July 9, 2007; In Final Form: July 30, 2007 Surface tensions to the surface tension, while the energy-integral and test area methods provide direct estimates. At 1 atm

  13. Numerical simulation of bubble and droplet deformation by a level set approach with surface tension in three dimensions

    E-Print Network [OSTI]

    Sminchisescu, Cristian

    Numerical simulation of bubble and droplet deformation by a level set approach with surface tension-dimensional Navier­Stokes solver for incompressible two-phase flow problems with surface tension and apply is the impact of surface tension and its discretization on the overall convergence behavior and conservation

  14. An experimental and numerical study of surface tension-driven melt flow R.A. Parsons a,, F. Nimmo a

    E-Print Network [OSTI]

    Nimmo, Francis

    An experimental and numerical study of surface tension-driven melt flow R.A. Parsons a,, F. Nimmo 2007 Abstract To determine the role of surface tension-driven melt migration in planetary bodies, we, surface tension causes the melt to relax back to a homogeneous distribution. Samples composed of 76 vol

  15. JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 12, NO. 4, AUGUST 2003 387 Surface Tension-Powered Self-Assembly of

    E-Print Network [OSTI]

    Prentiss, Mara

    JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 12, NO. 4, AUGUST 2003 387 Surface Tension, IEEE Abstract--Because of the low dimensional power of its force scaling law, surface tension on surface tension powered self-assembly of microstructures. The existing theoretical approaches

  16. The influence of the curvature dependence of the surface tension on the geometry of electrically charged menisci

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The influence of the curvature dependence of the surface tension on the geometry of electrically, Roio Poggio, I-67040 L'Aquila, Italy We evaluate how the curvature dependence of surface tension of surface tension on curvature becomes important when the "nucle- ation radius" is comparable

  17. Data collection and management of a mobile sensor platform

    E-Print Network [OSTI]

    Rosenfeld, Abraham M

    2013-01-01T23:59:59.000Z

    This thesis explores the development of a platform to better collect and manage data from multiple senor inputs mounted on a car sensor platform. Specifically, focusing on the collection and synchronization of multiple ...

  18. Towards the Next Generation of Model-Driven Cloud Platforms

    E-Print Network [OSTI]

    Muñoz, Francesc

    Towards the Next Generation of Model-Driven Cloud Platforms Javier Esparza-Peidro, Francesc D. Mu~noz-Esco of Model-Driven Cloud Platforms Javier Esparza-Peidro, Francesc D. Mu~noz-Esco´i Institut Universitari Mixt

  19. Integer-based Optimisations for Resource-constrained Sensor Platforms

    E-Print Network [OSTI]

    Roussos, George

    time model adapted for a WSN platform. Key words: Wireless Sensor Networks, Optimisation, Integer Tech batteries has changed only modestly [4]. These fundamental constraints suggest that programming optimisationInteger-based Optimisations for Resource-constrained Sensor Platforms Michael Zoumboulakis

  20. Characterizing System Level Energy Consumption in Mobile Computing Platforms

    E-Print Network [OSTI]

    Obraczka, Katia

    1 Characterizing System Level Energy Consumption in Mobile Computing Platforms Cintia B. Margi 1156 High Street Santa Cruz, CA 95064 Abstract--- This paper approaches energy consumption charac­ terization in mobile computing platforms by assessing energy con­ sumption of ''basic'' application

  1. A Robust Platform for the Synthesis of New Tetracycline Antibiotics

    E-Print Network [OSTI]

    A Robust Platform for the Synthesis of New Tetracycline Antibiotics Cuixiang Sun, Qiu Wang, Jason D potent antibiotic activities, both in bacterial cell culture and in vivo. The platform for tetracycline

  2. Disposable endoscope tip actuation design and robotic platform

    E-Print Network [OSTI]

    Chen, Yi

    A disposable endoscopic platform with actuation motors inside the body of the endoscope is presented. This platform can enable new medical devices for diagnosis and for minimally invasive surgeries. This paper addresses ...

  3. The Effective Lifetime of ACSR Full Tension Splice Connector Operated at Higher Temperature

    SciTech Connect (OSTI)

    Wang, Jy-An John [ORNL] [ORNL; Lara-Curzio, Edgar [ORNL] [ORNL; King Jr, Thomas J [ORNL] [ORNL; Graziano, Joe [Tennessee Valley Authority (TVA)] [Tennessee Valley Authority (TVA); Chan, John [Electric Power Research Institute (EPRI)] [Electric Power Research Institute (EPRI); Goodwin, Tip [PBS& J] [PBS& J

    2009-01-01T23:59:59.000Z

    This paper is to address the issues related to integrity of ACSR full tension splice connectors operated at high temperatures. A protocol of integrating analytical and experimental approaches to evaluate the integrity of a full tension single-stage splice connector (SSC) assembly during service at high operating temperature was developed. Based on the developed protocol the effective lifetime evaluation was demonstrated with ACSR Drake conductor SSC systems. The investigation indicates that thermal cycling temperature and frequency, conductor cable tension loading, and the compressive residual stress field within a SSC system have significant impact on the SSC integrity and the associated effective lifetime.

  4. 2011 Biomass Program Platform Peer Review: Thermochemical Conversion...

    Energy Savers [EERE]

    Thermochemical Conversion 2011 Biomass Program Platform Peer Review: Thermochemical Conversion "This document summarizes the recommendations and evaluations provided by an...

  5. Storage Exchange: A Global Trading Platform for Storage Services

    E-Print Network [OSTI]

    Melbourne, University of

    Storage Exchange: A Global Trading Platform for Storage Services Martin Placek and Rajkumar Buyya,raj}@csse.unimelb.edu.au Abstract. The Storage Exchange (SX) is a new platform allowing stor- age to be treated as a tradeable resource. Organisations with varying storage requirements can use the SX platform to trade and exchange

  6. ICT COMPETENCES ACQUISITION USING THE CONCORDE E-LEARNING PLATFORM

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ICT COMPETENCES ACQUISITION USING THE CONCORDE E-LEARNING PLATFORM Mircea Giurgiu Technical of the web platform. The targeted competences respond to the training needs identified in the first stage of the project. A web platform developed at Technical University of Cluj supports on-line training material

  7. GRAVIMETRIC MEASUREMENTS ON MOVING AND NON-INERTIAL PLATFORMS

    E-Print Network [OSTI]

    GRAVIMETRIC MEASUREMENTS ON MOVING AND NON-INERTIAL PLATFORMS By Haydey Alvarez Allende, Elias: http://www.ima.umn.edu #12;Gravimetric Measurements on Moving and Non-inertial Platforms Haydey Alvarez of the gravitational field using a gravimeter mounted on an aircraft. In a moving non-inertial platform, like

  8. Dual Stewart Platform Mobility Simulator R.F. Boian1

    E-Print Network [OSTI]

    New Jersey, University of Medicine and Dentistry of

    Dual Stewart Platform Mobility Simulator R.F. Boian1 , M. Bouzit1 , G.C. Burdea1,* , and J. The system uses two Stewart platform robots to render the walking surface geometry and condition. The hardware components of the platforms and the considerations behind their design are presented here

  9. Crafting Platform Strategy based on Anticipated Benefits and Costs1

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Chapter 2 Crafting Platform Strategy based on Anticipated Benefits and Costs1 Bruce G. Cameron, with a view to creating long-term competitive advantage for the firm. 2.1 Introduction Platforming industrial products. Example include Volkswagen's MQB platform (including VW Golf, Audi A3, and Seat Octavia

  10. Using Ontologies for Modeling Context-Aware Services Platforms

    E-Print Network [OSTI]

    van Sinderen, Marten

    Using Ontologies for Modeling Context-Aware Services Platforms Diego Rios1 , Patrícia Dockhorn-aware services platforms. It addresses the directions of research we are following in the WASP (Web Architectures for Services Platforms) project. For this purpose a simple scenario is considered. Keywords. Context

  11. Three Dimensional Dielectrophoretic Assembly of Nanostructures on a Micromachined Platform

    E-Print Network [OSTI]

    Dokmeci, Mehmet

    Three Dimensional Dielectrophoretic Assembly of Nanostructures on a Micromachined Platform University, Boston, MA-02115, USA ABSTRACT In this paper, we introduce a novel platform for selectively. The microfabricated platform based nanoscale assembly is quite versatile and has potential applications in fabricating

  12. Forest Research Dyfi Catchment and Woodland Research Platform

    E-Print Network [OSTI]

    Forest Research Dyfi Catchment and Woodland Research Platform The Dyfi Catchment and Woodland Research Platform is a collaborative initiative that focuses on the study of multi-functional landscapes and tourism. The Dyfi Catchment and Woodland Research Platform is data-rich. Both existing and new data

  13. The RASCALLI Platform For a Flexible and Distributed Development of

    E-Print Network [OSTI]

    The RASCALLI Platform For a Flexible and Distributed Development of Virtual Systems Augmented with Cognition Brigitte Kenn, Christian Schollum Abstract The RASCALLI platform is a modular and flexible development and runtime environment for artificial systems augmented with aspects of cognition. The platform

  14. Platform-Based Design for Embedded Luca P. Carloni a

    E-Print Network [OSTI]

    Carloni, Luca

    Platform-Based Design for Embedded Systems Luca P. Carloni a Fernando De Bernardinis a,b ClaudioDoCoMo Euro-labs, Munich, Germany Abstract A platform is an abstraction layer that hides the details composition of the elements. A legal com- position of elements and interconnects is called a platform instance

  15. Modelling Dynamic Trust with Property Based Attestation in Trusted Platforms

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Modelling Dynamic Trust with Property Based Attestation in Trusted Platforms Aarthi Nagarajan attestation in trusted computing provides the ability to reason about the state of a platform using integrity attestation by abstracting low level binary values to high level security properties or functions of platforms

  16. A contextual semantic mediator for a distributed cooperative maintenance platform

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A contextual semantic mediator for a distributed cooperative maintenance platform Mohamed-Mechatronic Systems department (AS2M) {hedi.karray, Brigitte.morello, Noureddine.zerhouni}@femto-st.fr Abstract-Platforms expand maintenance systems from centralized systems into e-maintenance platforms integrating various

  17. Optimizing the Cost of an Heterogeneous Distributed Platform

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Optimizing the Cost of an Heterogeneous Distributed Platform Jean-Marc Nicod, Laurent Philippe [nicod,philippe,sabbah]@lifc.univ-fcomte.fr Abstract--Distributed platforms become heterogeneous in more. For production grids and factories, it is mandatory to control and optimize the economic cost of a such platforms

  18. Microcontroller Platform Design Mengting Nan, Christopher Salthouse, Ph.D.

    E-Print Network [OSTI]

    Mountziaris, T. J.

    Microcontroller Platform Design Mengting Nan, Christopher Salthouse, Ph.D. University interface between computers and external devices. In this work, we developed a microcontroller platform, we demonstrated the applicability of the system to biomedical research by using the platform in two

  19. Porting salinas to the windows platform.

    SciTech Connect (OSTI)

    Reese, Garth M.; Wilson, Christopher Riley

    2006-06-01T23:59:59.000Z

    The ASC program has enabled significant development of high end engineering applications on massively parallel machines. There is a great benefit in providing these applications on the desktop of the analysts and designers, at least insofar as the small models may be run on these platforms, thus providing a tool set that spans the application needs. This effort documents the work of porting Salinas to the WINDOWS{trademark} platform. Selection of the tools required to compile, link, test and run Salinas in this environment is discussed. Significant problems encountered along the way are listed along with an estimation of the overall cost of the port. This report may serve as a baseline for streamlining further porting activities with other ASC codes.

  20. Platform Based Design for Automotive Sensor Conditioning

    E-Print Network [OSTI]

    Fanucci, L; Iozzi, F; Marino, C; Rocchi, A

    2011-01-01T23:59:59.000Z

    In this paper a general architecture suitable to interface several kinds of sensors for automotive applications is presented. A platform based design approach is pursued to improve system performance while minimizing time-to-market.. The platform is composed by an analog front-end and a digital section. The latter is based on a microcontroller core (8051 IP by Oregano) plus a set of dedicated hardware dedicated to the complex signal processing required for sensor conditioning. The microcontroller handles also the communication with external devices (as a PC) for data output and fast prototyping. A case study is presented concerning the conditioning of a Gyro yaw rate sensor for automotive applications. Measured performance results outperform current state-of-the-art commercial devices.

  1. Pressing the Flesh: A Tension in the Study of the Embodied, Embedded Mind? 

    E-Print Network [OSTI]

    Clark, Andy

    2006-01-01T23:59:59.000Z

    Mind, it is increasingly fashionable to assert, is an intrinsically embodied and environmentally embedded phenomenon. But there is a potential tension between two strands of thought prominent in this recent literature. One ...

  2. The influence of surface tension gradients on drop coalescence Franois Blanchette,1

    E-Print Network [OSTI]

    Bush, John W.M.

    ., Merced, California 95343, USA 2 Department of Mathematics, Massachusetts Institute of Technology, 77 and allow the horizontal pull of surface tension to prevail and cause pinch-off of the interface.9

  3. Inspection, Assessment, and Repair of Grouted Ducts in Post-tensioned Bridge 

    E-Print Network [OSTI]

    Im, Seok Been

    2011-02-22T23:59:59.000Z

    Segmental post-tensioned (PT) bridges are major structures that carry significant traffic. Recent investigations of these bridges have identified voids in their ducts. and some of these exposed strands at these void locations ...

  4. Experimental study of ductile fracture of tubes under combined tension/torsion

    E-Print Network [OSTI]

    Johnson, Joseph M. (Joseph Michael)

    2007-01-01T23:59:59.000Z

    This experiment sought to compare the results of an experimental torsion test on a specimen of 1045 steel with a torsion simulation in the ABAQUS FEA software program. A simulation of a tension test on a round bar of 1045 ...

  5. Strichartz Estimates for the Water-Wave Problem with Surface Tension

    E-Print Network [OSTI]

    Christianson, Hans

    Strichartz-type estimates for one-dimensional surface water-waves under surface tension are studied, based on the formulation of the problem as a nonlinear dispersive equation. We establish a family of dispersion estimates ...

  6. Determination of the Price-Load Curve by Using Smoothing Splines Under Tension

    E-Print Network [OSTI]

    Determination of the Price-Load Curve by Using Smoothing Splines Under Tension Master Thesis 4.2. Price-Load Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 4 load and price . . . . . . . . . . . . . . . . . . . . . . 6 1.5. Merit order curve with operating

  7. Orthogonality conditions and asymptotic stability in the Stefan problem with surface tension

    E-Print Network [OSTI]

    Mahir Hadzic

    2012-04-01T23:59:59.000Z

    We prove nonlinear asymptotic stability of steady spheres in the two-phase Stefan problem with surface tension. Our method relies on the introduction of appropriate orthogonality conditions in conjunction with a high-order energy method.

  8. The LEDA Platform Combinatorial and Geometric Computing

    E-Print Network [OSTI]

    Mehlhorn, Kurt

    ~iher** and Christian Uhrig*** Abstract. We give an overview of the LEDA platform for combinatorial and geometric in the text books of the area ([AtHJ83, Meh84, Tar83, CLR90, 0'R94, Woo93, Sed91, Kin90, van88, NH93 = (V, E), a node s G V, called the source, and a non-negative cost function on the edges cost : E -+ R

  9. AoM 2007 ID Number : 12323 NEW PRODUCT DEVELOPMENT IN A PLATFORM-DRIVEN ORGANIZATION : TOWARDS PLATFORM

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    AoM 2007 ID Number : 12323 NEW PRODUCT DEVELOPMENT IN A PLATFORM-DRIVEN ORGANIZATION : TOWARDS PLATFORM LIFECYCLE MANAGEMENT. SYLVAIN LENFLE, SIHEM JOUINI, CAROLINE DERROUSSEAUX CENTRE DE RECHERCHE EN GESTION, ECOLE POLYTECHNIQUE ABSTRACT Platform product development is now widely used to tackle the cost

  10. Policy brief | the health systems funding Platform--a Primer | 1 The Health Systems Funding Platform--A Primer

    E-Print Network [OSTI]

    Klein, Ophir

    Policy brief | the health systems funding Platform--a Primer | 1 The Health Systems Funding Platform--A Primer Policy Brief introduction In September 2009, the High Level Task Force on Innovative International Financing for Health Systems recommended the creation of a platform to coordinate aid to health

  11. PROCEDURES FOR RESEARCH UNITS AND INFRASTRUCTURE PLATFORMS As per Policy on Research Units and Infrastructure Platforms (VPRGS-8)

    E-Print Network [OSTI]

    Doedel, Eusebius

    PROCEDURES FOR RESEARCH UNITS AND INFRASTRUCTURE PLATFORMS As per Policy on Research Units and Infrastructure Platforms (VPRGS-8) Last Updated ­ January 31 2014 These Procedures are related to the Policy on Research Units and Infrastructure Platforms (VPRGS- 8) and reflect current practices concerning

  12. Abstract--This paper describes a software platform used for controlling any set of collaborative robots. The platform is

    E-Print Network [OSTI]

    González de Rivera, Guillermo

    Abstract-- This paper describes a software platform used for controlling any set of collaborative robots. The platform is specially designed for users without special skills on hardware design or communication topics. The platform provides a standard to simplify the addition of new hardware devices

  13. RUNNING HEAD: Subaerial Exposure Unconformities on the Vercors Carbonate Platform Subaerial Exposure Unconformities on the Vercors Carbonate Platform (SE France)

    E-Print Network [OSTI]

    Fouke, Bruce W.

    1 RUNNING HEAD: Subaerial Exposure Unconformities on the Vercors Carbonate Platform Subaerial Exposure Unconformities on the Vercors Carbonate Platform (SE France) and their Sequence Stratigraphic carbonate platform (SE France), shows that the most prominent break in depositional style does not coincide

  14. Platform Models for Sustainable Internet Regulation kc claffy and David D. Clark

    E-Print Network [OSTI]

    California at San Diego, University of

    Platform Models for Sustainable Internet Regulation kc claffy and David D. Clark kc and persistent features of today's telecommunications ecosystem: the use of layered platforms to implement desired functionality; and interconnection between actors at different platform layers. We use platform

  15. Effects of dynamic conditions and sheave efficiency on hook load, derrick load, and line tension

    E-Print Network [OSTI]

    Luke, Gregory Robert

    1991-01-01T23:59:59.000Z

    EFFECTS OF DYNAMIC CONDITIONS AND SHEAVE EFFICIENCY ON HOOK LOAD, DERRICK LOAD, AND LINE TENSION A Thesis by GREGORY ROBERT LUKE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1991 Major Subject: Petroleum Engineering EFFECTS OF DYNAMIC CONDITIONS AND SHEAVE EFFICIENCY ON HOOK LOAD, DERRICK LOAD, AND LINE TENSION A Thesis by GREGORY ROBERT LUKE Approved as to style and content by: Hans...

  16. Measurement of black liquor surface tension: Technical report No. 3. [Black liquor

    SciTech Connect (OSTI)

    Krishnagopalan, J.

    1987-09-01T23:59:59.000Z

    Surface tension and density of two kraft black liquors were measured at a series of temperatures, from a minimum value when gas bubbles can be blown into the liquor to a maximum value near the elevated boiling point of a particular sample. Available methods for the measurement of surface tension were evaluated critically and, as a result, the maximum bubble pressure method was selected. Varying the flow rate of the gas changes the frequency of bubble formation and thereby the age of the surface. The parameter has been utilized by many researchers to monitor the diffusion of low surface energy components (e.g., surfactants) to the liquid/air interface. The effect of bubble frequency when tested with a few pure liquids, indicated that the dynamics of bubble formation had to be further examined to separate out inertial and viscous effects from purely surface tension related pressure. The pressure versus flow rate data were extrapolated to zero flow rate and surface tension and density were calculated using these extrapolated values. As expected, surface tension decreased with increasing temperature for all the samples. Surface tension decreases with increasing solids content (when compared with the value for water) to a certain level (about 20%) and it starts to increase again. The decrease in surface tension in the dilute black liquor, is probably due to the decrease in the concentration of water, which has a high surface tension value. The occurrence of the minimum is probably due to the effect of inorganic components dominating over the effect of surfactants and other components. Reduction in the solubilities of the inorganics, promotion of micelles of the surfactants and reduction in the diffusion of surfactants to the surface, also could contribute to this phenomenon. 54 refs., 54 figs., 12 tabs.

  17. Surface tension and curvature energy of quark matter in the NJL model

    E-Print Network [OSTI]

    G. Lugones; A. G. Grunfeld; M. Al Ajmi

    2013-10-14T23:59:59.000Z

    In this paper we study the surface tension and the curvature energy of three-flavor quark matter in equilibrium under weak interactions within the Nambu-Jona-Lasinio model. We include the effect of color superconductivity and describe finite size effects within the multiple reflection expansion (MRE) framework. Our calculations result in large values of the surface tension which disfavor the formation of mixed phases at the hadron-quark inter-phase inside a hybrid star.

  18. A Muscle-Reflex Model That Encodes Principles of Legged Mechanics Produces Human Walking Dynamics and Muscle Activities

    E-Print Network [OSTI]

    Geyer, Hartmut

    While neuroscientists identify increasingly complex neural circuits that control animal and human gait, biomechanists find that locomotion requires little control if principles of legged mechanics are heeded that shape and ...

  19. Normalized mechanical properties of resedimented Gulf of Mexico clay from Integrated Ocean Drilling Program Expedition Leg 308

    E-Print Network [OSTI]

    Mazzei, David P. C. (David Peter Clark)

    2008-01-01T23:59:59.000Z

    During Integrated Ocean Drilling Program (IODP) Expedition Leg 308, many Whole Core Samples were recovered from the Ursa Basin in the Gulf of Mexico. Post-cruise geotechnical testing found these samples to be highly disturbed ...

  20. Multi-leg One-loop Massive Amplitudes from Integrand Reduction via Laurent Expansion

    E-Print Network [OSTI]

    Hans van Deurzen; Gionata Luisoni; Pierpaolo Mastrolia; Edoardo Mirabella; Giovanni Ossola; Tiziano Peraro

    2014-11-18T23:59:59.000Z

    We present the application of a novel reduction technique for one-loop scattering amplitudes based on the combination of the integrand reduction and Laurent expansion. We describe the general features of its implementation in the computer code NINJA, and its interface to GoSam. We apply the new reduction to a series of selected processes involving massive particles, from six to eight legs.

  1. A preliminary technology assessment of alternative uses for offshore petroleum platforms

    E-Print Network [OSTI]

    Lawlor, Frank James

    1975-01-01T23:59:59.000Z

    -contained platforms have been constructed. Structures other than self-contained platforms are required for oil production purposes. These include oil storage platforms, quarters platforms, compressor platforms, separator platforms, etc. These platforms...A PRELIMINARY TECHNOLOGY ASSESSMENT OF ALTERNATIVE USES FOR OFFSHORE PETROLEUM PLATFORMS A Thesis by FRANK JAMES LAWLOR III Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree...

  2. Platform Chemicals from an Oilseed Biorefinery

    SciTech Connect (OSTI)

    Tupy, Mike; Schrodi Yann

    2006-11-06T23:59:59.000Z

    The US chemical industry is $460 billion in size where a $150 billion segment of which is non-oxygenated chemicals that is sourced today via petroleum but is addressable by a renewable feedstock if one considers a more chemically reduced feedstock such as vegetable oils. Vegetable oil, due to its chemical functionality, provides a largely untapped opportunity as a renewable chemical source to replace petroleum-derived chemicals and produce platform chemicals unavailable today. This project examined the fertile intersection between the rich building blocks provided by vegetable oils and the enhanced chemical modification capability provided by metathesis chemistry. The technology advanced in this study is the process of ethylene cross-metathesis (referred to as ethenolysis) with vegetable oil and vegetable oil derivatives to manufacture the platform-chemical 9-decenoic acid (or 9DA) and olefin co-products. The project team meet its goals of demonstrating improved catalyst efficiencies of several multiples, deepening the mechanistic understanding of metathesis, synthesis and screening of dozens of new catalysts, designing and modeling commercial processes, and estimating production costs. One demonstrable result of the study was a step change improvement in catalyst turnover number in the ethenolysis of methyl oleate as reported here. We met our key measurable of producing 100 lbs of 9DA at the pilot-scale, which demonstrated ability to scale-up ethenolysis. DOE Project funding had significant positive impact on development of metathetically modified vegetable oils more broadly as the Cargill/Materia partnership, that was able to initiate primarily due to DOE funding, has succeeded in commercializing products, validating metathesis as a platform technology, and expanding a diverse products portfolio in high value and in large volume markets. Opportunities have expanded and business development has gained considerable momentum and enabled further expansion of the Materia/Cargill relationship. This project exceeded expectations and is having immediate impact on DOE success by replacing petroleum products with renewables in a large volume application today.

  3. Robotic vehicle with multiple tracked mobility platforms

    DOE Patents [OSTI]

    Salton, Jonathan R. (Albuquerque, NM); Buttz, James H. (Albuquerque, NM); Garretson, Justin (Albuquerque, NM); Hayward, David R. (Wetmore, CO); Hobart, Clinton G. (Albuquerque, NM); Deuel, Jr., Jamieson K. (Albuquerque, NM)

    2012-07-24T23:59:59.000Z

    A robotic vehicle having two or more tracked mobility platforms that are mechanically linked together with a two-dimensional coupling, thereby forming a composite vehicle of increased mobility. The robotic vehicle is operative in hazardous environments and can be capable of semi-submersible operation. The robotic vehicle is capable of remote controlled operation via radio frequency and/or fiber optic communication link to a remote operator control unit. The tracks have a plurality of track-edge scallop cut-outs that allow the tracks to easily grab onto and roll across railroad tracks, especially when crossing the railroad tracks at an oblique angle.

  4. Biomass Program Peer Review Sustainability Platform

    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 onYouTube YouTube Note: Since the YouTube platform isEnergyMeeting | DepartmentBioenergyUS0IBRDepartments of

  5. CX-007567: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Cost of Energy Reduction for Offshore Tension Leg Platform (TLP) Wind Turbine Systems Through Advanced Control Strategies for Energy Yield Improvement, Load Mitigation and Stabilization CX(s) Applied: A9 Date: 01/19/2012 Location(s): Virginia Offices(s): Golden Field Office

  6. VOLTTRON Lite: Integration Platform for the Transactional Network

    SciTech Connect (OSTI)

    Haack, Jereme N.; Katipamula, Srinivas; Akyol, Bora A.; Lutes, Robert G.

    2013-10-31T23:59:59.000Z

    In FY13, Pacific Northwest National Laboratory (PNNL) with funding from the Department of Energy’s (DOE’s) Building Technologies Office (BTO) designed, prototyped and tested a transactional network platform. The platform is intended to support energy, operational and financial transactions between any networked entities (equipment, organizations, buildings, grid, etc.). Initially, in FY13, the concept demonstrated transactions between packaged rooftop units (RTUs) and the electric grid using applications or “agents” that reside on the platform, on the equipment, on local building controller or in the Cloud. This document describes the core of the transactional network platform, the Volttron Lite™ software and associated services hosted on the platform. Future enhancements are also discussed. The appendix of the document provides examples of how to use the various services hosted on the platform.

  7. Computational and experimental platform for understanding and optimizing water flux and salt rejection in nanoporous membranes.

    SciTech Connect (OSTI)

    Rempe, Susan B.

    2010-09-01T23:59:59.000Z

    Affordable clean water is both a global and a national security issue as lack of it can cause death, disease, and international tension. Furthermore, efficient water filtration reduces the demand for energy, another national issue. The best current solution to clean water lies in reverse osmosis (RO) membranes that remove salts from water with applied pressure, but widely used polymeric membrane technology is energy intensive and produces water depleted in useful electrolytes. Furthermore incremental improvements, based on engineering solutions rather than new materials, have yielded only modest gains in performance over the last 25 years. We have pursued a creative and innovative new approach to membrane design and development for cheap desalination membranes by approaching the problem at the molecular level of pore design. Our inspiration comes from natural biological channels, which permit faster water transport than current reverse osmosis membranes and selectively pass healthy ions. Aiming for an order-of-magnitude improvement over mature polymer technology carries significant inherent risks. The success of our fundamental research effort lies in our exploiting, extending, and integrating recent advances by our team in theory, modeling, nano-fabrication and platform development. A combined theoretical and experimental platform has been developed to understand the interplay between water flux and ion rejection in precisely-defined nano-channels. Our innovative functionalization of solid state nanoporous membranes with organic protein-mimetic polymers achieves 3-fold improvement in water flux over commercial RO membranes and has yielded a pending patent and industrial interest. Our success has generated useful contributions to energy storage, nanoscience, and membrane technology research and development important for national health and prosperity.

  8. Outage Performance of Double Stratospheric Platforms Diversity Systems

    E-Print Network [OSTI]

    Gesbert, David

    /stratospheric platforms (HAPs) are either airships or planes that operate in the stratosphere, 17-22km above the ground [1

  9. 2011 Biomass Program Platform Peer Review: Biochemical Conversion...

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

    Biochemical Conversion 2011 Biomass Program Platform Peer Review: Biochemical Conversion This document summarizes the recommendations and evaluations provided by an independent...

  10. Standard Energy Efficiency Data (SEED) Platform - 2014 BTO Peer...

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

    Presentation More Documents & Publications Standard Energy Efficiency Database Platform - 2013 BTO Peer Review LBNL SEED: Why Open Source Overview LBNL SEED for Cities Overview...

  11. alliances simulation platform: Topics by E-print Network

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

    space on FPGA-based reconfigurable platforms. Application fields of this work include seismic modeling and migration, computational electromagnetics, aeroacoustics, marine...

  12. VOLTTRONTM as an Open Source Platform for Energy Management Applicatio...

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

    Virginia Tech VOLTTRON TM as an Open Source Platform for Energy Management Applications HVAC Controllers Lighting Controllers Lighting circuit(s) Plug load Controllers July 23,...

  13. The Tariff Analysis Project: A Database and Analysis Platform...

    Open Energy Info (EERE)

    search Tool Summary LAUNCH TOOL Name: The Tariff Analysis Project: A Database and Analysis Platform for Electricity Tariffs Focus Area: Renewable Energy Topics: Policy...

  14. Sandia Energy - Study Compares Floating-Platform Options for...

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

    Study Compares Floating-Platform Options for Offshore Vertical-Axis Wind Turbines Home Renewable Energy Energy Partnership News Wind Energy News & Events Study Compares...

  15. Surface tension of multi-phase flow with multiple junctions governed by the variational principle

    E-Print Network [OSTI]

    Shigeki Matsutani; Kota Nakano; Katsuhiko Shinjo

    2011-08-02T23:59:59.000Z

    We explore a computational model of an incompressible fluid with a multi-phase field in three-dimensional Euclidean space. By investigating an incompressible fluid with a two-phase field geometrically, we reformulate the expression of the surface tension for the two-phase field found by Lafaurie, Nardone, Scardovelli, Zaleski and Zanetti (J. Comp. Phys. \\vol{113} \\yr{1994} \\pages{134-147}) as a variational problem related to an infinite dimensional Lie group, the volume-preserving diffeomorphism. The variational principle to the action integral with the surface energy reproduces their Euler equation of the two-phase field with the surface tension. Since the surface energy of multiple interfaces even with singularities is not difficult to be evaluated in general and the variational formulation works for every action integral, the new formulation enables us to extend their expression to that of a multi-phase ($N$-phase, $N\\ge2$) flow and to obtain a novel Euler equation with the surface tension of the multi-phase field. The obtained Euler equation governs the equation of motion of the multi-phase field with different surface tension coefficients without any difficulties for the singularities at multiple junctions. In other words, we unify the theory of multi-phase fields which express low dimensional interface geometry and the theory of the incompressible fluid dynamics on the infinite dimensional geometry as a variational problem. We apply the equation to the contact angle problems at triple junctions. We computed the fluid dynamics for a two-phase field with a wall numerically and show the numerical computational results that for given surface tension coefficients, the contact angles are generated by the surface tension as results of balances of the kinematic energy and the surface energy.

  16. Effect of grooves cut on the periphery of a circular hole in bars subjected to tension

    E-Print Network [OSTI]

    Schmalz, Juan Ricardo

    1967-01-01T23:59:59.000Z

    of FIASTER OF SClENCE August 1967 Plajor Suhj cot: ~Iechanical Engineerdng EI'1'ECT 01 GROOVES CUT OV THE PERIPHERY OF A CIRCULAR HOLE IN BARS SUBJECTED TO TENSION A Thesis by JUAN RICARDO SCHNALZ Approved as to style and content by: ~Head... ~ ~ ~ ~ ~ ~ ~ ~ ~ 19 20 21 Tube and 22 IV EFFECT. OF GROOVES CUT ON THZ PERIL'T~RX OF A CZN1ERZD CIRCULAR HOIZ IN BARS SUBJECTED TO TENSION . . . . . . . . . , 23 General Results and Discussion . . . 23 Comparison of Re ults and Conclu ion. 46 BIBLIOGRAPHY L9...

  17. Interrelation of surface tension, optical turbidity, and color of operational transformer oils

    SciTech Connect (OSTI)

    L'vov, S. Yu.; Lyut'ko, E. O.; Lankau, Ya. V.; Komarov, V. B.; Seliverstov, A. F.; Bondareva, V. N.; L'vov, Yu. N.; L'vov, M. Yu.; Ershov, B. G.

    2011-09-15T23:59:59.000Z

    Measurements of the acidity, optical turbidity, surface tension, and color of transformer oil from 54 power transformers, autotransformers, and shunt reactors are reported. Changes in surface tension, optical turbidity, and color are found to obey adequate linear correlations, while the acidity has no correlation with any of these properties. Numerical criteria for the maximum permissible state (quality) of the oil with respect to optical turbidity and color are obtained. Recommendations to operating staff are provided for cases in which the criteria for optical turbidity and color are exceeded.

  18. Interface tension of the 3d 4-state Potts model using the Wang-Landau algorithm

    E-Print Network [OSTI]

    A. Hietanen; B. Lucini

    2011-11-21T23:59:59.000Z

    We study the interface tension of the 4-state Potts model in three dimensions using the Wang- Landau algorithm. The interface tension is given by the ratio of the partition function with a twisted boundary condition in one direction and periodic boundary conditions in all other directions over the partition function with periodic boundary conditions in all directions. With the Wang-Landau algorithm we can explicitly calculate both partition functions and obtain the result for all temperatures. We find solid numerical evidence for perfect wetting. Our algorithm is tested by calculating thermodynamic quantities at the phase transition point.

  19. Minerals Management Service perspective of platform reassessment

    SciTech Connect (OSTI)

    Dyhrkopp, F.G. [Minerals Management Service, New Orleans, LA (United States). Office of Structural and Technical Support

    1995-10-01T23:59:59.000Z

    As a result of the destruction caused by the Loma Prieta Earthquake, which occurred in the San Francisco Bay Area in 1989, and the passage of Hurricane Andrew through the Central Gulf of Mexico (GOM) oil and gas fields in August 1002, the Minerals Management Service (MMS) has been actively developing a policy over the past few years that will comprehensively address the reassessment of existing Outer Continental Shelf (OCS) oil and gas structures. Central to the development of such policy has been the need to develop a procedure by which reassessment can be carried out. This paper discusses the history of MMS involvement in the area of reassessment, their concerns, and how they view the reassessment procedures found in the Draft Section 17, Assessment of Existing Platforms, proposed for inclusion in future API RP 2A Editions. Minerals Management Service procedures for review and approval of proposals to remove and reuse existing structures in OCS waters are also discussed.

  20. Software Platforms for Smart Building Ecosystems: Understanding the

    E-Print Network [OSTI]

    Software Platforms for Smart Building Ecosystems: Understanding the Key Architectural-ready software platform for the smart building domain. We analyzed the type of contributors that may exist in a smart building ecosystem, the quality attributes that those roles are concerned with, and the key

  1. NADIM-Travel: A Multiagent Platform for Travel Services Aggregation

    E-Print Network [OSTI]

    Kropf, Peter

    services aggregators are increasingly in demand. A travel services aggregation platform should be able-coordinator agent manages users' requests as well as the response aggregation process. Service agents, on their partNADIM-Travel: A Multiagent Platform for Travel Services Aggregation Houssein Ben-Ameur a , François

  2. A New Motorcycle Simulator Platform: Mechatronics Design, Dynamics Modeling

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A New Motorcycle Simulator Platform: Mechatronics Design, Dynamics Modeling and Control L. Nehaoua and dynamics modeling will be presented. Some results are shown, validating the actutation requirements and platform control. 1. INTRODUCTION Road safety has become a major political and economical issue. While all

  3. Characterizing System Level Energy Consumption in Mobile Computing Platforms

    E-Print Network [OSTI]

    Obraczka, Katia

    1 Characterizing System Level Energy Consumption in Mobile Computing Platforms Cintia B. Margi 1156 High Street Santa Cruz, CA 95064 Abstract-- This paper approaches energy consumption charac- terization in mobile computing platforms by assessing energy con- sumption of "basic" application-level tasks

  4. An Open and Integrated Management Platform for Wireless Sensor Networks

    E-Print Network [OSTI]

    Varvarigo, Emmanouel "Manos"

    such as heterogeneity, limited bandwidth and energy constraints, WSN management and monitoring architectures need to and management platform, and OpenRSM, an open source integrated remote systems and network management platform. The proposed system architecture can support several levels of integration (infrastructure management

  5. Matched Public PUF: Ultra Low Energy Security Platform

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    Matched Public PUF: Ultra Low Energy Security Platform Saro Meguerdichian and Miodrag Potkonjak that cannot be matched with any third such module. Each device enables rapid, low-energy computation of ultra Our strategic objective is to introduce concepts and a hard- ware platform that enable ultra low power

  6. MICROMACHINED FOURIER TRANSFORM SPECTROMETER ON SILICON OPTICAL BENCH PLATFORM

    E-Print Network [OSTI]

    Park, Namkyoo

    MICROMACHINED FOURIER TRANSFORM SPECTROMETER ON SILICON OPTICAL BENCH PLATFORM Kyoungsik Yu1 a miniaturized Fourier transform spectrometer implemented on a silicon optical bench platform. The optical-etching. A spectral resolution of 45 nm near 1550 nm wavelength is demonstrated. Keywords: Fourier transform

  7. Microfluidics for biological analysis: Triumphs and hurdles of CD platforms

    E-Print Network [OSTI]

    Joshi, Yogesh Moreshwar

    Microfluidics for biological analysis: Triumphs and hurdles of CD platforms JONATHAN SIEGRIST1 , R on microfluidic technologies has become extensive, particularly in regards to the develop- ment of sample. Centrifugal microfluidic platforms based on the compact-disc format are discussed, along with the advantages

  8. A MODELING APPROACH FOR LOCATING LOGISTICS PLATFORMS FOR FAST PARCEL

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 29 A MODELING APPROACH FOR LOCATING LOGISTICS PLATFORMS FOR FAST PARCEL DELIVERY IN URBAN AREAS for optimizing, in a sustainable way (i.e. economical, eco-friendly and societal), the location of logistics has a logistics platform right in its centre (ARENC: 41362 m2 of warehouses and offices

  9. Platform Based Design for Automotive Sensor Conditioning L. Fanucci1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Platform Based Design for Automotive Sensor Conditioning L. Fanucci1 , A. Giambastiani2 , F. Iozzi3 kinds of sensors for automotive applications is presented. A platform based design approach is pursued prototyping. A case study is presented concerning the conditioning of a Gyro yaw rate sensor for automotive

  10. product platforms Marc H. Meyer, Olivier de Weck and Tucker

    E-Print Network [OSTI]

    de Weck, Olivier L.

    FIR ST PAG E PR O O FS wiem05025 product platforms Marc H. Meyer, Olivier de Weck and Tucker Marion across existing products as well as new market appli- cations (Meyer, Tertzakian, and Utterback, 1997 that end (Meyer and Lehnerd, 1997). We first define the meaning and context for product platforms in new

  11. Thermomechanical Characterization of a TiPdNi High Temperature SMA under Tension

    E-Print Network [OSTI]

    Thermomechanical Characterization of a TiPdNi High Temperature SMA under Tension Parikshith K issues, a nominal composition of Ti50Pd40Ni10 HTSMA was used. The alloy was fabricated using a vacuum arc Electrode Discharge Machining (EDM). A high temperature experimental setup was developed on a load frame

  12. WELL-POSEDNESS OF A THERMO-MECHANICAL MODEL FOR SHAPE MEMORY ALLOYS UNDER TENSION

    E-Print Network [OSTI]

    Stefanelli, Ulisse

    WELL-POSEDNESS OF A THERMO-MECHANICAL MODEL FOR SHAPE MEMORY ALLOYS UNDER TENSION PAVEL KREJC´I AND ULISSE STEFANELLI Abstract. We present a model of the full thermo-mechanical evolution of a shape memory on a time-discretization of the problem are provided. 1. Introduction Shape memory alloys (SMAs) belong

  13. Electrochemical characterization and time-variant structural reliability assessment of post-tensioned, segmental concrete bridges

    E-Print Network [OSTI]

    Pillai Gopalakrishnan, Radhakris

    2010-07-14T23:59:59.000Z

    TENSION CAPACITY OF STRANDS EXPOSED TO WET-DRY (WD) CONDITIONS ............................................................................ 177? 7.1.? Introduction... Models for Strands Under WD Exposure conditions - Analytical Program ........................................................................................ 184? 7.4.1.? Parameters used in the models for wet-dry conditions ....................... 185? 7...

  14. Usability of digital libraries: a source of creative tensions with technical developments

    E-Print Network [OSTI]

    Blandford, Ann

    Usability of digital libraries: a source of creative tensions with technical developments Ann If digital libraries are to achieve their full potential, they need to be usable and used ­ by people of `usability' and how they apply specifically to digital libraries. There are great challenges to integrating

  15. Indentation of a Rigid Sphere into an Elastic Substrate with Surface Tension and Adhesion

    E-Print Network [OSTI]

    Chung-Yuen Hui; Tianshu Liu; Thomas Salez; Elie Raphael; Anand Jagota

    2015-01-18T23:59:59.000Z

    The surface tension of compliant materials such as gels provides resistance to deformation in addition to and sometimes surpassing that due to elasticity. This article studies how surface tension changes the contact mechanics of a small hard sphere indenting a soft elastic substrate. Previous studies have examined the special case where the external load is zero, so contact is driven by adhesion alone. Here, we tackle the much more complicated problem where, in addition to adhesion, deformation is driven by an indentation force. We present an exact solution based on small strain theory. The relation between indentation force (displacement) and contact radius is found to depend on a single dimensionless parameter: $\\omega=\\sigma(\\mu R)^{-2/3}(9\\pi W_{\\textrm{ad}}/4)^{-1/3}$, where $\\sigma$ and $\\mu$ are the surface tension and shear modulus of the substrate, $R$ is the sphere radius, and $W_{\\textrm{ad}}$ is the interfacial work of adhesion. Our theory reduces to the Johnson-Kendall-Roberts theory and Young-Dupr\\'e equation in the limits of small and large $\\omega$ respectively, and compares well with existing experimental data. Our results show that, although surface tension can significantly affect the indentation force, the magnitude of the pull-off load in the partial wetting liquid-like limit is reduced only by 1/3 compared with the JKR limit, and the pull-off behavior is completely determined by $\\omega$.

  16. Free energy and surface tension of arbitrarily large Mackay icosahedral clusters

    E-Print Network [OSTI]

    Goddard III, William A.

    Free energy and surface tension of arbitrarily large Mackay icosahedral clusters Richard B. Mc for predicting the free energy of arbitrarily large Mackay icosahedral clusters. van der Waals clusters free energies for larger clusters 561 atoms . Combining these predictions with correlations

  17. Line-tension effects on heterogeneous nucleation on a spherical substrate and in a spherical cavity

    E-Print Network [OSTI]

    Masao Iwamatsu

    2015-03-17T23:59:59.000Z

    The line-tension effects on heterogeneous nucleation are considered when a spherical lens-shaped nucleus is nucleated on top of a spherical substrate and on the bottom of the wall of a spherical cavity. The effect of line tension on the nucleation barrier can be separated from the usual volume term. As the radius of the substrate increases, the nucleation barrier decreases and approaches that of a flat substrate. However, as the radius of the cavity increases, the nucleation barrier increases and approaches that of a flat substrate. A small spherical substrate is a less active nucleation site than a flat substrate, and a small spherical cavity is a more active nucleation site than a flat substrate. In contrast, the line-tension effect on the nucleation barrier is maximum when the radii of the nucleus and the substrate or cavity become comparable. Therefore, by tuning the size of the spherical substrate or spherical cavity, the effect of the line tension can be optimized. These results will be useful in broad range of applications from material processing to understanding of global climate, where the heterogeneous nucleation plays a vital role.

  18. On stability condition for bifluid flows with surface tension: Application to microfluidics

    E-Print Network [OSTI]

    Frey, Pascal

    On stability condition for bifluid flows with surface tension: Application to microfluidics Ce simulations of microfluidic flows using a Level Set method, namely the exploration of different mixing-vol- umes; Microfluidics; Droplets 1. Introduction Analysis and algorithms derived herein are the result

  19. Predicting the surface tension of aqueous 1-1 electrolyte solutions at high salinity

    E-Print Network [OSTI]

    Boyer, Edmond

    industrial contexts. For example, capillary failure in the context of CO2 geological storage is, to a large model based on the modified Poisson-Boltzmann equation and the Pitzer theory is described and used water. The model predictions are in good agreement with the surface tension data for 1:1 electrolytes

  20. Creep Compliance Analysis Technique for the Flattened Indirect Tension Test of Asphalt Concrete

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Creep Compliance Analysis Technique for the Flattened Indirect Tension Test of Asphalt Concrete: ­ Cored Sample (Cylindrical) Indirect tensile testing (IDT) (Strength/Creep) ­ AASHTO T-322 Damage under and Flattened IDT · 1000-sec creep tests on three replicates · 0, -10, and -20 deg. C · Displacement

  1. 1 INTRODUCTION AND MOTIVATION The Indirect Tension Test is frequently used in the

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Highway Research Program (SHRP), in the mid-1990's, a test protocol was developed for evaluating creep on the same sample, with the non-destructive creep test run before the destructive strength test Tension Test (IDT) is frequently used for evaluation of asphalt material viscoelas- tic creep properties

  2. International Journal of Modern Physics C FLUCTUATING INTERFACES, SURFACE TENSION, AND

    E-Print Network [OSTI]

    International Journal of Modern Physics C FLUCTUATING INTERFACES, SURFACE TENSION, AND CAPILLARY WAVES: AN INTRODUCTION VLADIMIR PRIVMAN Department of Theoretical Physics, University of Oxford \\Lambda 1 Keble Road, Oxford OX1 3NP, UK Received 25 June 1992 ABSTRACT We present an introduction to modern

  3. Comparison of alternative methods for deriving hydraulic properties and scaling factors from single-disc tension

    E-Print Network [OSTI]

    Mohanty, Binayak P.

    Comparison of alternative methods for deriving hydraulic properties and scaling factors from single-disc] Analysis of single-disc tension infiltrometer data is commonly based on the interpretation of the steady and the time needed to wet the contact sand under the disc was successfully filtered from the raw data using

  4. Birth and Growth of Cavitation Bubbles within Water under Tension Confined in a Simple Synthetic Tree

    E-Print Network [OSTI]

    Ohl, Claus-Dieter

    Birth and Growth of Cavitation Bubbles within Water under Tension Confined in a Simple Synthetic. Cavitation can spontaneously occur, nucleating a bubble. We investigate the dynamics of spontaneous or triggered cavitation inside water filled microcavities of a hydrogel. Results show that a stable bubble

  5. London Penetration Length and String Tension in SU(2) Lattice Gauge Theory

    E-Print Network [OSTI]

    Paolo Cea; Leonardo Cosmai

    1994-11-24T23:59:59.000Z

    We study the distribution of the color fields due to a static quark-antiquark pair in SU(2) lattice gauge theory. We find evidence of dual Meissner effect. We put out a simple relation between the penetration length and the string tension.

  6. Surface tension and the mechanics of liquid inclusions in compliant solids

    E-Print Network [OSTI]

    Robert W. Style; John S. Wettlaufer; Eric R. Dufresne

    2014-09-06T23:59:59.000Z

    Eshelby's theory of inclusions has wide-reaching implications across the mechanics of materials and structures including the theories of composites, fracture, and plasticity. However, it does not include the effects of surface stress, which has recently been shown to control many processes in soft materials such as gels, elastomers and biological tissue. To extend Eshelby's theory of inclusions to soft materials, we consider liquid inclusions within an isotropic, compressible, linear-elastic solid. We solve for the displacement and stress fields around individual stretched inclusions, accounting for the bulk elasticity of the solid and the surface tension (\\textit{i.e.} isotropic strain-independent surface stress) of the solid-liquid interface. Surface tension significantly alters the inclusion's shape and stiffness as well as its near- and far-field stress fields. These phenomenon depend strongly on the ratio of inclusion radius, $R$, to an elastocapillary length, $L$. Surface tension is significant whenever inclusions are smaller than $100L$. While Eshelby theory predicts that liquid inclusions generically reduce the stiffness of an elastic solid, our results show that liquid inclusions can actually stiffen a solid when $Rsurface tension cloaks the far-field signature of liquid inclusions when $R=3L/2$. These results are have far-reaching applications from measuring local stresses in biological tissue, to determining the failure strength of soft composites.

  7. PARAMETERIZATIONS FOR THE KELVIN (SURFACE TENSION) EFFECT ON THE EQUILIBRIUM RADIUS AND ASSOCIATED OPTICAL PROPERTIES OF A

    E-Print Network [OSTI]

    PARAMETERIZATIONS FOR THE KELVIN (SURFACE TENSION) EFFECT ON THE EQUILIBRIUM RADIUS AND ASSOCIATED as the volume-equivalent dry radius rdry) and the fractional relative humidity h (RH/100). Surface tension also the dependence of the equilibrium size of a particle with given rdry at given relative humidity on surface

  8. EWEC 2006, Athens, The Anemos Wind Power Forecasting Platform Technology The Anemos Wind Power Forecasting Platform Technology -

    E-Print Network [OSTI]

    Boyer, Edmond

    the fluctuating output from wind farms into power plant dispatching and energy trading, wind power predictionsEWEC 2006, Athens, The Anemos Wind Power Forecasting Platform Technology 1 The Anemos Wind Power a professional, flexible platform for operating wind power prediction models, laying the main focus on state

  9. DOE Hybrid Electric Vehicle Test Platform

    SciTech Connect (OSTI)

    Gao, Yimin

    2012-03-31T23:59:59.000Z

    Based on the contract NT-42790 to the Department of Energy, “Plug-in Hybrid Ethanol Research Platform”, Advanced Vehicle Research Center (AVRC) Virginia has successfully developed the phase I electric drive train research platform which has been named as Laboratory Rapid Application Testbed (LabRAT). In phase II, LabRAT is to be upgraded into plug-in hybrid research platform, which will be capable of testing power systems for electric vehicles, and plug-in hybrid electric vehicles running on conventional as well as alternative fuels. LabRAT is configured as a rolling testbed with plentiful space for installing various component configurations. Component connections are modularized for flexibility and are easily replaced for testing various mechanisms. LabRAT is designed and built as a full functional vehicle chassis with a steering system, brake system and four wheel suspension. The rear drive axle offers maximum flexibility with a quickly changeable gear ratio final drive to accommodate different motor speed requirements. The electric drive system includes an electric motor which is mechanically connected to the rear axle through an integrated speed/torque sensor. Initially, a 100 kW UQM motor and corresponding UQM motor controller is used which can be easily replaced with another motor/controller combination. A lithium iron phosphate (LiFePO4) battery pack is installed, which consists of 108 cells of 100 AH capacity, giving the total energy capacity of 32.5 kWh. Correspondingly, a fully functional battery management system (BMS) is installed to perform battery cell operation monitoring, cell voltage balancing, and reporting battery real time operating parameters to vehicle controller. An advanced vehicle controller ECU is installed for controlling the drive train. The vehicle controller ECU receives traction or braking torque command from driver through accelerator and brake pedal position sensors and battery operating signals from the BMS through CAN BUS, and then generates motor torque command (traction or braking) to the motor controller based on the control algorithm software embedded in the vehicle controller ECU. The vehicle controller ECU is a re-programmable electronic control unit. Any control algorithm software developed can be easily downloaded to vehicle controller ECU to test any newly developed control strategy. The flexibility of the control system significantly enhances the practical applicability of the LabRAT. A new test methodology has been developed for the LabRAT simulating any vehicles running on road with different weights from compact passenger car to light duty truck on an AC or eddy current dynamometers without much effort for modification of the system. LabRAT is equipped with a fully functional data acquisition system supplied by CyberMetrix. The measurement points along the drive train are DC electric power between battery pack and motor controller input, AC electric power between motor controller and electric motor, mechanical power between motor and rear axle. The data acquisition system is designed with more capability than current requirements in order to meet the requirements for phase II.

  10. Computer Simulated Transient Analysis of a Polyimide V-Groove Leg Actuator with Serpentine Heater for a Walking Micro-Robot

    E-Print Network [OSTI]

    Kandlikar, Satish

    Computer Simulated Transient Analysis of a Polyimide V-Groove Leg Actuator with Serpentine Heater simulations done on a polyimide V-groove leg actuator for a walking micro-robot, to investigate the optimal of Technology, Sweden. The principle of actuation is based on the thermal expansion of polyimide inside a V

  11. Analysis and correlation of volcanic ash in marine sediments from the Peru Margin, Ocean Drilling Program Leg 201: explosive volcanic cycles of the north-central Andes 

    E-Print Network [OSTI]

    Hart, Shirley Dawn

    2007-04-25T23:59:59.000Z

    (Huaynaputina) within the CVZ (de Silva and Francis, 1991). This site map is modified from Leg 201 Initial Reports (D?Hondt, Jorgensen, Miller et al., 2003). 4 Leg Site APC depth (mbsf) Recovery below previous APC depth 112 684 70 Francis, 1979). Three linear zones of active...

  12. Tectonic synthesis of the northern Arabian platform

    SciTech Connect (OSTI)

    Everett, J.R.; Russell, O.R.; Stasxkowski, R.J.; Loyd, S.P.; Tabbutt, V.M. (Earth Satellite Corp., Chevy Chase, MD (USA)); Dolan, P.; Stein, A. (Dolan and Associates, Richmond (England)); Scott, J. (Petroleum Geological Analysis, Ltd., Reading (England))

    1990-05-01T23:59:59.000Z

    The creation and destruction of Tethys oceans from the early Mesozoic to the present has created a complex suture zone along the Zagros/Bitlus trend. The fundamental interactions are between the Arabian and Euasian plates, but several microplates trapped between the major plates further complicate the tectonic fabric of the region. On the west, the Arabian plate slides past the African plate and the Sinai microplate along the Levant fault. The Palmyrides are related to a bend in this plate boundary and are not an offset extension of the Syrian arc. As Arabia penetrates Eurasia the Anatolian block is escaping to the west along the northern (right-lateral) and eastern (left-lateral) faults. Convergence of the Eurasian and Arabian plates resulted in ophiolite abduction (Late Cretaceous), followed by continent-continent collision (Miocene to present). The zone of collision is marked by the Bitlis-Zagrosa suture. Structural features associated with the collision include overthrusting, impactogens, and complexly folded and faulted mountain systems. Intensity and complexity of structuring decreases southward into open long-wavelength folds on the Arabian Platform. The fortuitous combination of rich source rocks, abundant reservoir rocks with primary and fracture porosity, and numerous trapping structures make this an extraordinary prolific hydrocarbon province. A structural and lithologic interpretation of 53 contiguous Landsat Multispectral Scanner scenes covering all of Syria, Iraq, and Kuwait, and portions of Turkey, Iran, Jordan, Lebanon, and Saudi Arabia has provided insights into the tectonic history of this area and its hydrocarbon accumulation.

  13. Autonomous biomorphic robots as platforms for sensors

    SciTech Connect (OSTI)

    Tilden, M.; Hasslacher, B.; Mainieri, R.; Moses, J.

    1996-10-01T23:59:59.000Z

    The idea of building autonomous robots that can carry out complex and nonrepetitive tasks is an old one, so far unrealized in any meaningful hardware. Tilden has shown recently that there are simple, processor-free solutions to building autonomous mobile machines that continuously adapt to unknown and hostile environments, are designed primarily to survive, and are extremely resistant to damage. These devices use smart mechanics and simple (low component count) electronic neuron control structures having the functionality of biological organisms from simple invertebrates to sophisticated members of the insect and crab family. These devices are paradigms for the development of autonomous machines that can carry out directed goals. The machine then becomes a robust survivalist platform that can carry sensors or instruments. These autonomous roving machines, now in an early stage of development (several proof-of-concept prototype walkers have been built), can be developed so that they are inexpensive, robust, and versatile carriers for a variety of instrument packages. Applications are immediate and many, in areas as diverse as prosthetics, medicine, space, construction, nanoscience, defense, remote sensing, environmental cleanup, and biotechnology.

  14. ADS: The Next Generation Search Platform

    E-Print Network [OSTI]

    Accomazzi, Alberto; Henneken, Edwin A; Chyla, Roman; Luker, James; Grant, Carolyn S; Thompson, Donna M; Holachek, Alexandra; Dave, Rahul; Murray, Stephen S

    2015-01-01T23:59:59.000Z

    Four years after the last LISA meeting, the NASA Astrophysics Data System (ADS) finds itself in the middle of major changes to the infrastructure and contents of its database. In this paper we highlight a number of features of great importance to librarians and discuss the additional functionality that we are currently developing. Starting in 2011, the ADS started to systematically collect, parse and index full-text documents for all the major publications in Physics and Astronomy as well as many smaller Astronomy journals and arXiv e-prints, for a total of over 3.5 million papers. Our citation coverage has doubled since 2010 and now consists of over 70 million citations. We are normalizing the affiliation information in our records and, in collaboration with the CfA library and NASA, we have started collecting and linking funding sources with papers in our system. At the same time, we are undergoing major technology changes in the ADS platform which affect all aspects of the system and its operations. We hav...

  15. agent-based applications platforms: Topics by E-print Network

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

    S. 133 Benefits and applications of commonality and platforming in the oil and gas industry MIT - DSpace Summary: Platforming, the sharing of parts, processes, knowledge, and...

  16. Performance Characteristics of an Adaptive Mesh Refinement Calculation on Scalar and Vector Platforms

    E-Print Network [OSTI]

    Geddes, Cameron Guy Robinson

    Platforms Michael Welcome, Charles Rendleman, Leonid Oliker Computational Research Division Lawrence. It is therefore imperative to understand the tradeoffs between conventional scalar and parallel-vector platforms

  17. Volttron: An Agent Platform for the Smart Grid

    SciTech Connect (OSTI)

    Haack, Jereme N.; Akyol, Bora A.; Carpenter, Brandon J.; Tews, Cody W.; Foglesong, Lance W.

    2013-05-06T23:59:59.000Z

    VOLLTRON platform enables the deployment of intelligent sensors and controllers in the smart grid and provides a stable, secure and flexible framework that expands the sensing and control capabilities. VOLTTRON platform provides services fulfilling the essential requirements of resource management and security for agent operation in the power grid. The facilities provided by the platform allow agent developers to focus on the implementation of their agent system and not on the necessary "plumbing' code. For example, a simple collaborative demand response application was written in less than 200 lines of Python.

  18. New platform proposal for West Troll gas field

    SciTech Connect (OSTI)

    Not Available

    1984-10-01T23:59:59.000Z

    The Condeep Skirt Pile described in this paper is a central fixed production platform which could offer greater topside flexibility as well as reduced settlement compared with other gravity platforms. The new design resembles a stretched version of the successful Condeep gravity platforms for medium water depths, with a multicell foundation and up to four shafts extended to carry the deck. This solution permits a more flexible topside layout with wider separation between the living quarters and hazardous areas. It also provides a larger volume in the shafts compared with a monotower for accomodating conductors and risers from the many satellite wells planned on West Troll and utilities.

  19. Modeling and simulation, and their validation of three-phase transformers with three legs under DC bias

    SciTech Connect (OSTI)

    Fuchs, E.F.; You, Y.; Roesler, D.J. [Univ. of Colorado, Boulder, CO (United States)] [Univ. of Colorado, Boulder, CO (United States)

    1999-04-01T23:59:59.000Z

    This paper proposes a new model for three-phase transformers with three legs with and without tank under DC bias based on electric and magnetic circuit theory. For the calculation of the nonsinusoidal no-load currents, a combination of time and frequency domains is used. The analysis shows that (1) asymmetric three-phase transformers with three legs generate magnetizing currents with triplen harmonics not being of the zero-sequence type. (2) The wave shapes of the three magnetizing currents of (asymmetric) transformers are dependent on the phase sequence. (3) The magnetic history of transformer magnetization -- due to residual magnetization and hysteresis of the tank -- cannot be ignored if a DC bias is present and the magnetic influence of the tank is relatively strong, e.g., for oil-cooled transformers. (4) Symmetric three-phase transformers with three legs generate no-load currents without triplen harmonics. (5) The effects of DC bias currents (e.g., reactive power demand, harmonic distortion) can be suppressed employing symmetric three-phase transformers with three legs including tank. Measurements corroborate computational results; thus this nonlinear model is valid and accurate.

  20. Coordinated Team Play in the Four-Legged RoboCup League Georgios Kontes and Michail G. Lagoudakis

    E-Print Network [OSTI]

    Lagoudakis, Michail G.

    Coordinated Team Play in the Four-Legged RoboCup League Georgios Kontes and Michail G. Lagoudakis- tonomous robot teams. The ability to coordinate the play- ers within such a team of robots is the key to the suc- cess of the team. Team coordination in a human soccer game is achieved through various team

  1. Vector-Based Dynamic Modeling and Control of the Quattro Parallel Robot by means of Leg Orientations

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Vector-Based Dynamic Modeling and Control of the Quattro Parallel Robot by means of Leg-speed control of a parallel robot is to define an efficient dynamic model. It is usually not easy to have by a calibrated camera, in the sense of solving the entire control-oriented (hard) modeling problem, both

  2. Improved maximum cooling by optimizing the geometry of thermoelectric leg elements Yan Zhang, Zhixi Bian and Ali Shakouri*

    E-Print Network [OSTI]

    , power factor; , thermal conductivity. Bi2Te3 has been the most popular thermoelectric material at room that in an idealized TEC model, the cooling power density is inversely proportional to the TE leg length. [4,5,6] We of single and multi stage TE devices. Nomenclature Seebeck coefficient electrical conductivity thermal

  3. Abstract--This video submission presents the experimental validation and testing of a leg-wheel hybrid mobile robot

    E-Print Network [OSTI]

    Lin, Pei-Chun

    is installed inside the spoke and its power and control signal are passed through a connector pair, which have separate mechanisms of wheels and legs, this robot is implemented with a transformation mechanism inventions specialized in rolling on the flat ground, whose excellent performance of power efficiency

  4. Abstract--In legged systems design an important question applies to: "What can be inferred from the performance of a

    E-Print Network [OSTI]

    Papadopoulos, Evangelos

    . A relevant example of a scaling law is provided by the Froude number, [3]. The Froude number is twice the ratio of the kinetic energy to the gravitational potential energy of a system. Particularly in legged that existing electric drives impose. Initially, simple scaling laws are derived from first princi- ples where

  5. IEEE TRANSACTIONS ON ROBOTICS, VOL. 25, NO. 5, OCTOBER 2009 1047 A New Mechanism for Mesoscale Legged

    E-Print Network [OSTI]

    Webster III, Robert James

    IEEE TRANSACTIONS ON ROBOTICS, VOL. 25, NO. 5, OCTOBER 2009 1047 A New Mechanism for Mesoscale for a novel mechanism for robotic legged locomotion at the mesoscale (from hundreds of microns to tens mesoscale locomotion tasks, in- cluding endoscopic capsule robot locomotion in the gastrointestinal tract

  6. Modeling and Application of Series Elastic Actuators for Force Control Multi Legged Robots

    E-Print Network [OSTI]

    S, Arumugom; V, Ponselvan

    2009-01-01T23:59:59.000Z

    Series Elastic Actuators provide many benefits in force control of robots in unconstrained environments. These benefits include high force fidelity, extremely low impedance, low friction, and good force control bandwidth. Series Elastic Actuators employ a novel mechanical design architecture which goes against the common machine design principal of "stiffer is better". A compliant element is placed between the gear train and driven load to intentionally reduce the stiffness of the actuator. A position sensor measures the deflection, and the force output is accurately calculated using Hooke's Law (F=Kx). A control loop then servos the actuator to the desired output force. The resulting actuator has inherent shock tolerance, high force fidelity and extremely low impedance. These characteristics are desirable in many applications including legged robots, exoskeletons for human performance amplification, robotic arms, haptic interfaces, and adaptive suspensions. We describe several variations of Series Elastic Ac...

  7. Two-leg SU(2n) spin ladder: A low-energy effective field theory approach

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

    Lecheminan, P.; Tsvelik, A. M.

    2015-05-01T23:59:59.000Z

    We present a field-theory analysis of a model of two SU(2n)-invariant magnetic chains coupled by a generic interaction preserving time reversal and inversion symmetry. Contrary to the SU(2)-invariant case the zero-temperature phase diagram of such two-leg spin ladder does not contain topological phases. Only generalized Valence Bond Solid phases are stabilized when n > 1 with different wave vectors and ground-state degeneracies. In particular, we find a phase which is made of a cluster of 2n spins put in an SU(2n) singlet state. For n = 3, this cluster phase is relevant to ¹?³Yb ultracold atoms, with an emergent SU(6)more »symmetry, loaded in a double-well optical lattice.« less

  8. Tracking Provenance in ORNL's Flexible Research Platforms

    SciTech Connect (OSTI)

    Hensley, Zachary P [ORNL; Sanyal, Jibonananda [ORNL; New, Joshua Ryan [ORNL

    2013-08-01T23:59:59.000Z

    Provenance is dened as information about the origin of objects, a concept that applies to both physical and digital objects and often overlaps both. The use of provenance in systems designed for research is an important but forgotten feature. Provenance allows for proper and exact tracking of information, its use, its lineage, its derivations and other metadata that are important for correctly adhering to the scien- tic method. In our project's prescribed use of provenance, researchers can determine detailed information about the use of sensor data in their experiments on ORNL's Flexible Research Platforms (FRPs). Our project's provenance system, Provenance Data Management System (ProvDMS), tracks information starting with the creation of information by an FRP sensor. The system determines station information, sensor information, and sensor channel information. The system allows researchers to derive generations of experiments from the sensor data and tracks their hierarchical flow. Key points can be seen in the history of the information as part of the information's workflow. The concept of provenance and its usage in science is relatively new and while used in other cases around the world, our project's provenance diers in a key area. To keep track of provenance, most systems must be designed or redesigned around the new provenance system. Our system is designed as a cohesive but sepa- rate entity and allows for researchers to continue using their own methods of analysis without being constrained in their ways in order to track the provenance. We have designed ProvDMS using a lightweight provenance library, Core Provenance Library (CPL) v.6 In addition to keeping track of sensor data experiments and its provenance, ProvDMS also provides a web-enabled visualization of the inheritance.

  9. Acoustic classification of buried objects with mobile sonar platforms

    E-Print Network [OSTI]

    Edwards, Joseph Richard, 1971-

    2006-01-01T23:59:59.000Z

    In this thesis, the use of highly mobile sonar platforms is investigated for the purpose of acoustically classifying compact objects on or below the seabed. The extension of existing strategies, including synthetic aperture ...

  10. Platform-independent method for computer aided schematic drawings

    DOE Patents [OSTI]

    Vell, Jeffrey L. (Slingerlands, NY); Siganporia, Darius M. (Clifton Park, NY); Levy, Arthur J. (Fort Lauderdale, FL)

    2012-02-14T23:59:59.000Z

    A CAD/CAM method is disclosed for a computer system to capture and interchange schematic drawing and associated design information. The schematic drawing and design information are stored in an extensible, platform-independent format.

  11. A Complete Microfluidic Screening Platform for Rational Protein Crystallization

    E-Print Network [OSTI]

    Hansen, Carl L.

    A Complete Microfluidic Screening Platform for Rational Protein Crystallization Billy T. C. Lau integration, and low reagent consumption, microfluidic devices have emerged as viable technologies for protein crystallization. Current microfluidic crystallization technologies have focused on two separate strategies: one

  12. automated microarray platform: Topics by E-print Network

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

    10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 Microfluidics-based biochips: technology issues, implementation platforms, and design automation...

  13. High-throughput Microfluidic Screening Platforms for Microalgae Study 

    E-Print Network [OSTI]

    Kim, Hyun Soo

    2014-12-15T23:59:59.000Z

    parallel studies are needed, however, current microalgae culture systems are lack of high-throughput screening capabilities, and thus not suitable for the parallel studies. Here, three different high-throughput microfluidic microalgae screening platforms...

  14. Responses of an articulated loading platform in waves and currents

    E-Print Network [OSTI]

    Ran, Zhihuang

    1993-01-01T23:59:59.000Z

    The responses of an articulated loading platform (ALP) in regular and irregular unidirectional waves (with or without currents) are investigated both in frequency and time domain. The first- and second-order wave diffraction radiation are solved...

  15. Development of a microfluidic platform for integrated DNA sequencing protocols

    E-Print Network [OSTI]

    Kumar, Mayank, S.M. Massachusetts Institute of Technology

    2007-01-01T23:59:59.000Z

    This thesis describes the design and development of a microfluidic platform to reduce costs and improve the quality of in the DNA sequencing methodology currently implemented at the Broad Institute in Cambridge, Massachusetts. ...

  16. Architecture, Platforms and Integration Information Services and Technology

    E-Print Network [OSTI]

    Walker, Matthew P.

    Architecture, Platforms and Integration Information Services and Technology March 1, 2013 Bill Jon Broshious Systems Integration & Architecture George Atala Joel Henderson Lito Tejada Bernard Wong Tamer Sakr Developer Toolkit Karin Bliman Mary Washburn Enterprise Architecture Consulting Russell

  17. Design and implementation of an automated battery management platform

    E-Print Network [OSTI]

    Toksoz, Tuna

    2012-01-01T23:59:59.000Z

    This thesis describes the design and the implementation of the hardware platform for automated battery management with battery changing/charging capability for autonomous UAV missions with persistency requirement that ...

  18. Standard Energy Efficiency Data (SEED) Platform Homepage Screenshot

    Broader source: Energy.gov [DOE]

    The Standard Energy Efficiency Data (SEED) Platform™ is an open source software application that helps organizations easily manage data on the energy performance of large groups of buildings. This is a screenshot of the application homepage.

  19. 2011 Biomass Program Platform Peer Review: Integrated Biorefineries...

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

    provided by an independent external panel of experts at the U.S. Department of Energy Biomass Programs Integrated Biorefinery Platform Review meeting, held on February 1...3,...

  20. Communication centric platforms for future high data intensive applications 

    E-Print Network [OSTI]

    Ahmad, Balal

    The notion of platform based design is considered as a viable solution to boost the design productivity by favouring reuse design methodology. With the scaling down of device feature size and scaling up of design complexity, ...

  1. A platform based approach for embedded systems software development

    E-Print Network [OSTI]

    Seth, Deepak

    2006-01-01T23:59:59.000Z

    A platform based approach for product development allows companies to eliminate redundancies, efficiently utilize its resources and provide products for a wider market. The basic idea is to develop and share key components ...

  2. Seafloor anchoring for platforms in the Messina Strait

    E-Print Network [OSTI]

    Manno, Antonioluca

    2010-01-01T23:59:59.000Z

    The importance of properly designing and selecting an anchor is key to reliable techniques for floating offshore platforms including power generation from marine currents. Numerous studies have demonstrated how the uplift ...

  3. VOLTTRON: An Agent Execution Platform for the Electric Power System

    SciTech Connect (OSTI)

    Akyol, Bora A.; Haack, Jereme N.; Ciraci, Selim; Carpenter, Brandon J.; Vlachopoulou, Maria; Tews, Cody W.

    2012-06-05T23:59:59.000Z

    Volttron is an agent execution platform that is engineered for use in the electric power system. Volttron provides resource guarantees for agents and the platform including memory and processor utilization; authentication and authorization services; directory services for agent and resource location; and agent mobility. Unlike most other agent platforms, Volttron does not depend on a single agent authoring language. Instead, we chose to design and implement Volttron as a platform service and framework that is decoupled from the agent execution environment. A prototype implementation of Volttron has been written in Python (using Python v2.7.2) and we have executed agents written in Python and Java and as shell scripts. The intended use of Volttron is in the power distribution system for managing distributed generation, demand-response, and plug-in electric vehicles.

  4. A Knowledge Management Platform for Documentation of Case Reports in

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Knowledge Management Platform for Documentation of Case Reports in Pharmacovigilance Florence systematic reviews are needed, there is little guidance on how systematic documentation of drug adverse documentation of pharmacovigilance case reports for the pharmaceutical industry and regulatory authorities

  5. An architectural selection framework for data fusion in sensor platforms

    E-Print Network [OSTI]

    Mirza, Atif R

    2007-01-01T23:59:59.000Z

    The role of data fusion in sensor platforms is becoming increasingly important in various domains of science, technology and business. Fusion pertains to the merging or integration of information towards an enhanced level ...

  6. Development and optimization of high-throughput zebrafish screening platform

    E-Print Network [OSTI]

    Koo, Bryan Kyo

    2010-01-01T23:59:59.000Z

    The high-throughput zebrafish screening platform is a revolutionary tool that enables subcellular precision in vivo whole animal screening of Danio Rerio. It can perform laser surgery and/or imaging in less than twenty ...

  7. Sandia National Laboratories: floating-platform options for offshore...

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

    vertical-axis wind turbines (VAWTs). This analysis uses a 5 MW VAWT topside design envelope created by Sandia to compare floating platform options for each turbine in the...

  8. Aneka Cloud Application Platform and Its Integration with Windows Azure

    E-Print Network [OSTI]

    Melbourne, University of

    scheduling, and energy efficient resource utilization. The Aneka Cloud Application platform, together. Ltd., Melbourne, Victoria, Australia 2 Cloud Computing and Distributed Systems (CLOUDS) Laboratory, Department of Computer Science and Software Engineering, The University of Melbourne, Australia Abstract

  9. Fluidics platform and method for sample preparation and analysis

    DOE Patents [OSTI]

    Benner, W. Henry; Dzenitis, John M.; Bennet, William J.; Baker, Brian R.

    2014-08-19T23:59:59.000Z

    Herein provided are fluidics platform and method for sample preparation and analysis. The fluidics platform is capable of analyzing DNA from blood samples using amplification assays such as polymerase-chain-reaction assays and loop-mediated-isothermal-amplification assays. The fluidics platform can also be used for other types of assays and analyzes. In some embodiments, a sample in a sealed tube can be inserted directly. The following isolation, detection, and analyzes can be performed without a user's intervention. The disclosed platform may also comprises a sample preparation system with a magnetic actuator, a heater, and an air-drying mechanism, and fluid manipulation processes for extraction, washing, elution, assay assembly, assay detection, and cleaning after reactions and between samples.

  10. EPICS SCA CLIENTS ON THE .NET X64 PLATFORM

    E-Print Network [OSTI]

    Timossi, Chris; Nishimura, Hiroshi

    2006-01-01T23:59:59.000Z

    EPICS SCA CLIENTS ON THE .NET X64 PLATFORM* C. Timossi 1 andAbstract We have developed a .NET assembly, which we callCa.dll) are categorized by .NET as unmanaged because they

  11. High-throughput Microfluidic Screening Platforms for Microalgae Study

    E-Print Network [OSTI]

    Kim, Hyun Soo

    2014-12-15T23:59:59.000Z

    parallel studies are needed, however, current microalgae culture systems are lack of high-throughput screening capabilities, and thus not suitable for the parallel studies. Here, three different high-throughput microfluidic microalgae screening platforms...

  12. Design of miniature floating platform for marginal fields

    E-Print Network [OSTI]

    Miao, Sha, S.M. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    This thesis presents the design of a novel type of miniature floating offshore platforms with a heave plate attached at the keel, suitable for developing deep-water marginal fields. This design features a small displacement, ...

  13. Towards the Development of a Web-based Alignment Platform 

    E-Print Network [OSTI]

    Schnober, Carsten

    2010-01-01T23:59:59.000Z

    In this work, a platform is developed that makes existing sentence and word alignment tools available as web services. The tools implemented are Hunalign and GIZA++; after creating wrappers and format converters, they are embedded into a pipeline...

  14. Appeared in Communications in Pure and Applied Mathematics volume 51, pages 733--795, 1998. SINGULARITY FORMATION IN THIN JETS WITH SURFACE TENSION

    E-Print Network [OSTI]

    Pugh, Mary

    . SINGULARITY FORMATION IN THIN JETS WITH SURFACE TENSION M. C. PUGH AND M. J. SHELLEY Abstract. We derive immiscible fluid by fluid interfaces with surface tension. Both fluids are assumed to be in­ compressible. These singularities are driven by the surface tension, and are very similar to those observed previously by Hou

  15. Appeared in Communications in Pure and Applied Mathematics volume 51, pages 733795, 1998. SINGULARITY FORMATION IN THIN JETS WITH SURFACE TENSION

    E-Print Network [OSTI]

    Pugh, Mary

    . SINGULARITY FORMATION IN THIN JETS WITH SURFACE TENSION M. C. PUGH AND M. J. SHELLEY Abstract. We derive immiscible fluid by fluid interfaces with surface tension. Both fluids are assumed to be in- compressible. These singularities are driven by the surface tension, and are very similar to those observed previously by Hou

  16. PHYSICAL REVIEW E 86, 026119 (2012) Shape of an elastic loop strongly bent by surface tension: Experiments and comparison with theory

    E-Print Network [OSTI]

    Audoly, Basile

    2012-01-01T23:59:59.000Z

    PHYSICAL REVIEW E 86, 026119 (2012) Shape of an elastic loop strongly bent by surface tension a simple and reliable way to measure surface tension. DOI: 10.1103/PhysRevE.86.026119 PACS number(s): 89]. For increasing surface tension, it successively bifurcates to a planar oval shape, to a twisted saddlelike

  17. Surface tension of an electrolyteair interface: a Monte Carlo study This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Levin, Yan

    Surface tension of an electrolyte­air interface: a Monte Carlo study This article has been 24 (2012) 284115 (5pp) doi:10.1088/0953-8984/24/28/284115 Surface tension of an electrolyte for calculating the surface tension of an electrolyte­air interface using Monte Carlo (MC) simulations

  18. JOURNAL DE PHYSIQUE Colloque C6, supplement au n 8, Tome 39, aout 1978, page C6-205 SURFACE TENSION AND DENSITY PROFILE OF LIQUID He+

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    variationnelle la tension superficielle et le profil de densité au voisinage de la surface. On tient compte des 3 He as input. The calculation yields a surface tension of 0.134 K/A2 which compares well the same radial distribution function as input. The surface tension of liquid 3 He has been measured over

  19. A Functional Test Platform for the Community Land Model

    SciTech Connect (OSTI)

    Xu, Yang [ORNL] [ORNL; Thornton, Peter E [ORNL] [ORNL; King, Anthony Wayne [ORNL] [ORNL; Steed, Chad A [ORNL] [ORNL; Gu, Lianhong [ORNL] [ORNL; Schuchart, Joseph [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    A functional test platform is presented to create direct linkages between site measurements and the process-based ecosystem model within the Community Earth System Models (CESM). The platform consists of three major parts: 1) interactive user interfaces, 2) functional test model and 3) observational datasets. It provides much needed integration interfaces for both field experimentalists and ecosystem modelers to improve the model s representation of ecosystem processes within the CESM framework without large software overhead.

  20. MOWII Webinar: The ECO TLP, an Economical and Ecologically Sound Tension

    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 DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetterEconomyDr. ErnestMID-CAREERof Energy MONDAY:Leg

  1. Surface Tension and Negative Pressure Interior of a Non-Singular `Black Hole'

    E-Print Network [OSTI]

    Mazur, Pawel O

    2015-01-01T23:59:59.000Z

    The constant density interior Schwarzschild solution for a static, spherically symmetric collapsed star has a divergent pressure when its radius $R\\le\\frac{9}{8}R_s=\\frac{9}{4}GM$. We show that this divergence is integrable, and induces a non-isotropic transverse stress with a finite redshifted surface tension on a spherical surface of radius $R_0=3R\\sqrt{1-\\frac{8}{9}\\frac{R}{R_s}}$. For $r surface is localized at the Schwarzschild radius itself, $R_0=R_s$, and the solution has constant negative pressure $p =-\\bar\\rho$ everywhere in the interior $rsurface tension of the condensate star surface is given by $\\tau_s=\\Delta\\kappa/8\\pi G$, where $\\Delta\\kappa=\\kappa_+-\\kappa_-=2\\kappa_+=1/R_s$ is the difference of equal and opposite surface grav...

  2. The Role of Surface Tension for the Equation of State of Quark-Gluon Bags

    E-Print Network [OSTI]

    K. A. Bugaev

    2007-11-20T23:59:59.000Z

    The temperature and chemical potential dependent surface tension of bags is introduced into the gas of quark-gluon bags model. The suggested model is solved analytically. It resolves a long standing problem of a unified description of the first and second order phase transition with the cross-over. Such an approach is necessary to model the complicated properties of quark-gluon plasma and hadronic matter from the first principles of statistical mechanics. In addition to the deconfinement phase transition, we found that at the curve of a zero surface tension coefficient there must exist the surface induced phase tranition of the 2-nd or higher order, which separates the pure quark gluon plasma (QGP) from the cross-over states. Thus, the present model predicts that the critical endpoint of quantum chromodynamics is the tricritical endpoint.

  3. Numerical simulation of the stochastic dynamics of inclusions in biomembranes in presence of surface tension

    E-Print Network [OSTI]

    H. Rafii-Tabar; H. R. Sepangi

    2005-08-30T23:59:59.000Z

    The stochastic dynamics of inclusions in a randomly fluctuating biomembrane is simulated. These inclusions can represent the embedded proteins and the external particles arriving at a cell membrane. The energetics of the biomembrane is modelled via the Canham-Helfrich Hamiltonian. The contributions of both the bending elastic-curvature energy and the surface tension of the biomembrane are taken into account. The biomembrane is treated as a two-dimensional sheet whose height variations from a reference frame is treated as a stochastic Wiener process. The lateral diffusion parameter associated with this Wiener process coupled with the longitudinal diffusion parameter obtained from the standard Einsteinian diffusion theory completely determine the stochastic motion of the inclusions. It is shown that the presence of surface tension significantly affects the overall dynamics of the inclusions, particularly the rate of capture of the external inclusions, such as drug particles, at the site of the embedded inclusions, such as the embedded proteins.

  4. Surface tension of nucleating hadrons using the free energy of an isolated quark

    SciTech Connect (OSTI)

    Brower, R. (Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215 (United States)); Huang, S. (Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States)); Potvin, J. (Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215 (United States) Department of Science and Mathematics, Parks College of Saint Louis University, Cahokia, Illinois 62206 (United States)); Rebbi, C. (Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215 (United States))

    1992-09-15T23:59:59.000Z

    We report on a new method of calculating the surface tension in quenched lattice QCD, in which an external field coupled to the Polyakov lines is applied to generate the interface between the confined and the deconfined phases. The free energy associated with the interface is then computed from an integral of the average Polyakov line with respect to the strength of the external field. We have tested this new approach on a 16{times}16{times}32 spatial volume, using a temporal size of {ital N}{sub {ital t}}=4 for which all previous attempts at computing the surface tension have failed. A clear signal has been seen, giving {alpha}/{ital T}{sub {ital c}}{sup 3}=0.027(4), or {alpha}=5 MeV/fm{sup 2}. This represents a very small cost in free energy for hadrons to nucleate from a hot plasma.

  5. Blade platform seal for ceramic/metal rotor assembly

    DOE Patents [OSTI]

    Wertz, John L. (Indianapolis, IN)

    1982-01-01T23:59:59.000Z

    A combination ceramic and metal turbine rotor for use in high temperature gas turbine engines includes a metal rotor disc having a rim with a plurality of circumferentially spaced blade root retention slots therein to receive a plurality of ceramic blades, each including side platform segments thereon and a dovetail configured root slidably received in one of the slots. Adjacent ones of the platform segments including edge portions thereon closely spaced when the blades are assembled to form expansion gaps in an annular flow surface for gas passage through the blades and wherein the assembly further includes a plurality of unitary seal members on the rotor connected to its rim and each including a plurality of spaced, axially extending, flexible fingers that underlie and conform to the edge portions of the platform segments and which are operative at turbine operating temperatures and speeds to distribute loading on the platform segments as the fingers are seated against the underside of the blade platforms to seal the gaps without undesirably stressing thin web ceramic sections of the platform.

  6. Temperature-extended Jarzynski relation: Application to the numerical calculation of the surface tension

    E-Print Network [OSTI]

    Christophe Chatelain

    2007-04-05T23:59:59.000Z

    We consider a generalization of the Jarzynski relation to the case where the system interacts with a bath for which the temperature is not kept constant but can vary during the transformation. We suggest to use this relation as a replacement to the thermodynamic perturbation method or the Bennett method for the estimation of the order-order surface tension by Monte Carlo simulations. To demonstrate the feasibility of the method, we present some numerical data for the 3D Ising model.

  7. SU(3) Latent Heat and Surface Tension from Tree Level and Tadpole Improved Actions

    E-Print Network [OSTI]

    B. Beinlich; F. Karsch; A. Peikert

    1996-08-27T23:59:59.000Z

    We analyze the latent heat and surface tension at the SU(3) deconfinement phase transition with tree level and tadpole improved Symanzik actions on lattices with temporal extent $N_\\tau = 3$ and 4 and spatial extent $N_\\sigma/ N_\\tau = 4$, 6 and 8. In comparison to the standard Wilson action we do find a drastic reduction of cut-off effects already with tree level improved actions. On lattices with temporal extent $N_\\tau=4$ results for the surface tension and latent heat obtained with a tree level improved action agree well with those obtained with a tadpole improved action. A comparison with $N_\\tau=3$ calculations, however, shows that results obtained with tadpole action remain unaffected by cut-off effects even on this coarse lattice, while the tree level action becomes sensitive to the cut-off. For the surface tension and latent heat we find $\\sigma_I/ T_c^3 = 0.0155~(16)$ and $\\Delta\\epsilon/T_c^4 = 1.40~(9)$, respectively.

  8. SU(3) Latent Heat and Surface Tension from Tree Level and Tadpole Improved Actions

    E-Print Network [OSTI]

    Beinlich, B; Peikert, A

    1996-01-01T23:59:59.000Z

    We analyze the latent heat and surface tension at the SU(3) deconfinement phase transition with tree level and tadpole improved Symanzik actions on lattices with temporal extent $N_\\tau = 3$ and 4 and spatial extent $N_\\sigma/ N_\\tau = 4$, 6 and 8. In comparison to the standard Wilson action we do find a drastic reduction of cut-off effects already with tree level improved actions. On lattices with temporal extent $N_\\tau=4$ results for the surface tension and latent heat obtained with a tree level improved action agree well with those obtained with a tadpole improved action. A comparison with $N_\\tau=3$ calculations, however, shows that results obtained with tadpole action remain unaffected by cut-off effects even on this coarse lattice, while the tree level action becomes sensitive to the cut-off. For the surface tension and latent heat we find $\\sigma_I/ T_c^3 = 0.0155~(16)$ and $\\Delta\\epsilon/T_c^4 = 1.40~(9)$, respectively.

  9. Role of Surface Tension in Adhesive Contact between a Rigid Sphere and a Soft Elastic Substrate

    E-Print Network [OSTI]

    Hui, Chung-Yuen; Salez, Thomas; Raphael, Elie; Jagota, Anand

    2014-01-01T23:59:59.000Z

    The surface tension of compliant materials such as gels provides resistance to deformation in addition to and sometimes surpassing that due to elasticity. This article studies how surface tension changes the contact mechanics of a small hard sphere indenting a soft elastic substrate. Previous studies have examined the special case where the external load is zero, so contact is driven by adhesion alone. Here we tackled the much more complicated problem where, in addition to adhesion, deformation is driven by an indentation force. We presented an exact solution based on small strain theory. The relation between indentation force (displacement) and contact radius is found to depend on two dimensionless parameters: the elasto-capillary number $\\alpha=\\sigma/(2\\mu R)$ and the normalized work of adhesion $W_{\\textrm{ad}}/(\\mu R)$, where $\\mu$ is the shear modulus of the substrate, $R$ the sphere radius, $\\sigma$ the surface tension of substrate-air interface and $W_{\\textrm{ad}}$ is the interfacial work of adhesion...

  10. Surface tension in the cold and dense chiral transition and astrophysical applications

    E-Print Network [OSTI]

    L. F. Palhares; E. S. Fraga

    2011-07-08T23:59:59.000Z

    The surface tension of cold and dense QCD phase transitions has appeared recently as a key ingredient in different astrophysical scenarios, ranging from core-colapse supernovae explosions to compact star structure. If the surface tension is low enough, observable consequences are possible. Its value is however not known from first-principle methods in QCD, calling for effective approaches. Working within the framework of homogeneous nucleation by Langer, we discuss the steps that are needed to obtain the nucleation parameters from a given effective potential. As a model for deriving the effective potential for the chiral transition, we adopt the linear sigma model with constituent quarks at very low temperatures, which provides an effective description for the thermodynamics of the strong interaction in cold and dense matter, and predict a surface tension of Sigma ~ 5--15 MeV/fm^2, well below previous estimates. Including temperature effects and vacuum logarithmic corrections, we find a clear competition between these features in characterizing the dynamics of the chiral phase conversion.

  11. Surface Tension of Electrolyte Interfaces: Ionic Specificity within a Field-Theory Approach

    E-Print Network [OSTI]

    Markovich, Tomer; Podgornik, Rudolf

    2014-01-01T23:59:59.000Z

    We study the surface tension of ionic solutions at air/water and oil/water interfaces. By using field-theoretical methods and including a finite proximal surface-region with ionic-specific interactions. The free energy is expanded to first-order in a loop expansion beyond the mean-field result. We calculate the excess surface tension and obtain analytical predictions that reunite the Onsager-Samaras pioneering result (which does not agree with experimental data), with the ionic specificity of the Hofmeister series. We derive analytically the surface-tension dependence on the ionic strength, ionic size and ion-surface interaction, and show consequently that the Onsager-Samaras result is consistent with the one-loop correction beyond the mean-field result. Our theory fits well a wide range of salt concentrations for different monovalent ions using one fit parameter, and reproduces the reverse Hofmeister series for anions at the air/water and oil/water interfaces.

  12. National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #22, January - March 2009

    SciTech Connect (OSTI)

    Not Available

    2009-04-01T23:59:59.000Z

    January to March, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.

  13. Optimization of platform game levels for player experience Chris Pedersen, Julian Togelius, Georgios Yannakakis

    E-Print Network [OSTI]

    Togelius, Julian

    Platform game The test-bed platform game used for our studies is a ver- sion of Infinite Mario Bros (seeOptimization of platform game levels for player experience Chris Pedersen, Julian Togelius of certain parameters of platform game levels on the play- ers' experience of the game. A version of Super

  14. National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #25, October - December 2009

    SciTech Connect (OSTI)

    Schell, D.

    2010-01-01T23:59:59.000Z

    October to December, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.

  15. National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #20, July-September 2008

    SciTech Connect (OSTI)

    Schell, D. J.

    2008-12-01T23:59:59.000Z

    July to September, 2008 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.

  16. National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #24, July-September 2009

    SciTech Connect (OSTI)

    Schell, D.

    2009-10-01T23:59:59.000Z

    July to September, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.

  17. National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #17, October-December 2007

    SciTech Connect (OSTI)

    Schell, D.

    2008-01-01T23:59:59.000Z

    October to December, 2007 edition of the newsletter of the Biochemical Platform Process Integration project.

  18. National Bioenergy Center Sugar Platform Integration Project: Quarterly Update #15, April - June 2007

    SciTech Connect (OSTI)

    Schell, D.

    2007-07-01T23:59:59.000Z

    July quarterly update for the National Bioenergy Center's Biochemical Processing Platform Integration Project.

  19. Temperature measurement in the Intel Efraim Rotem Mobile Platform Group, Intel corporation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , Intel corporation Jim Hermerding ­ Mobile platform Group, Intel corporation Cohen Aviad - Microprocessor

  20. Platform Enhancements and System Identification for Control of an Unmanned Helicopter

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Platform Enhancements and System Identification for Control of an Unmanned Helicopter Matt Garratt. A linear model has been identified using time domain methods for both platforms. The identified models on moving platforms. In this paper, the innovation is the enhancement of experimental platforms to better