Sample records for ramesh dandekar smg

  1. Studies in Process Simplification Ashok Dandekar Dewayne E. Perry Lawrence G. Votta

    E-Print Network [OSTI]

    Perry, Dewayne E.

    Studies in Process Simplification Ashok Dandekar Dewayne E. Perry Lawrence G. Votta Fujitsu Network@research.bell-labs.com votta@research.bell-labs.com Abstract One of the major problems with software development processes is their complexity. Hence, one of the primary motivations in process improvement is the simplification

  2. SMG on SMP Clusters: Performance Issues Sue Goudy, Lorie Liebrock, and Steve Schaffer

    E-Print Network [OSTI]

    SMG on SMP Clusters: Performance Issues Sue Goudy, Lorie Liebrock, and Steve Schaffer New Mexico Institute of Mining and Technology Socorro, New Mexico 87801 spgoudy@nmt.edu February 3, 2003 Abstract be a high speed interconnect as in Intel Teraflops or some relatively slow connection such as ethernet

  3. SMG on SMP Clusters: Performance Issues Sue Goudy, Lorie Liebrock, and Steve Scha#er

    E-Print Network [OSTI]

    SMG on SMP Clusters: Performance Issues Sue Goudy, Lorie Liebrock, and Steve Scha#er New Mexico Institute of Mining and Technology Socorro, New Mexico 87801 spgoudy@nmt.edu February 3, 2003 Abstract be a high speed interconnect as in Intel Teraflops or some relatively slow connection such as ethernet

  4. Multipole-multimode Floquet theory in nuclear magnetic resonance Ramesh Ramachandran and Robert G. Griffina

    E-Print Network [OSTI]

    Griffin, Robert G.

    Multipole-multimode Floquet theory in nuclear magnetic resonance Ramesh Ramachandran and Robert G. The approach, based on multimode Floquet theory, employs the multipole operator basis of Sanctuary for spin

  5. Emergent Semantics Through Interaction in Image Databases Simone Santini, Amarnath Gupta and Ramesh Jain

    E-Print Network [OSTI]

    Gupta, Amarnath

    Emergent Semantics Through Interaction in Image Databases Simone Santini, Amarnath Gupta and Ramesh Laboratory, University of California, San Diego, {ssantini,jain}@ece.ucsd.edu. Amarnath Gupta is with the San

  6. Assessing the Vulnerability of Replicated Network George Dean Bissias, Brian Neil Levine, and Ramesh K. Sitaraman

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    , and Ramesh K. Sitaraman Dept. of Computer Science, Univ. of Massachusetts Amherst, USA {gbiss% of the substations from all generators; on a large wireless mesh network disrupting 5% of wireless links between autonomous systems (i.e., servers). In a power grid, each substation (i.e., client) connects to one

  7. Multi-objective Mobile Agent Routing in Wireless Sensor Networks Ramesh Rajagopalan, Chilukuri K. Mohan, Pramod Varshney, Kishan Mehrotra

    E-Print Network [OSTI]

    Coello, Carlos A. Coello

    Due to their flexibility and cost effectiveness, wireless sensor networks (WSNs) have been usedMulti-objective Mobile Agent Routing in Wireless Sensor Networks Ramesh Rajagopalan, Chilukuri K. Mohan, Pramod Varshney, Kishan Mehrotra Electrical Engineering and Computer Science Dept., Syracuse

  8. Spatial Distribution of Soil Properties in Water Conservation Area 3 of the Everglades Gregory L. Bruland, Sabine Grunwald,* Todd Z. Osborne, K. Ramesh Reddy, and Susan Newman

    E-Print Network [OSTI]

    Florida, University of

    . Bruland, Sabine Grunwald,* Todd Z. Osborne, K. Ramesh Reddy, and Susan Newman ABSTRACT The need and abiotic factors (Bruland and Richardson, 2004; Grunwald et al., 2006a). Consequently, existing landscape extent and distribution (DeBusk et al., 1994; Newman et al., 1997; Bruland and Richardson, 2005

  9. Application of the transient, isochronal p/z plotting method to multilayered reservoirs

    E-Print Network [OSTI]

    Dandekar, Rashmin Ramesh

    1992-01-01T23:59:59.000Z

    . The economic decisions concerning the optimum exploitation and management of the resources are made on the basis of the revenue to be earned from the sale of the produced hydrocarbons. Major reservoir engineering decisions are also made on the basis...APPLICATION OF THE TRANSIENT, ISOCHRONAL p/z PLOTTING METHOD TO MULTILAYERED RESERVOIRS A Thesis by RA SHMIN RAMESH DANDEKAR Submitted to the Office of Graduate Studies of Texas A&M University in panial fulfillment of the requirements...

  10. Ramamoorthy Ramesh | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO Overview OCHCO Overview OCHCODepartmentEnergy April 20138

  11. Ramesh Balakrishnan | Argonne Leadership Computing Facility

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnicalPurchase, Delivery,Assistance ProgramLivingston

  12. last saved on 3/12/2013 CURRENT DEGREE PROGRAMS

    E-Print Network [OSTI]

    Guenther, Frank

    1105 B Statistics SMG 22 1702 B Sustainable Energy SMG 22 0121 B Theatre Arts SMG 22 5534 B Visual Arts SMG 22 0525 C Marketing SMG 22 5004 C Operations and Technology Management SMG 22 0531 C

  13. NERSC Users Pruess and Ramesh elected to National Academy of...

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

    Labs CSEE, Pruess helped run the first ever 3D simulations of the dissolution of CO2 in brine in geologic carbon sequestration projects. The simulations were run on NERSC's...

  14. Transparent Flexible Conductive Polymer Antennas Nicholas A. Vacirca, Nicholas J. Kirsch, Elizabeth E. Plowman, Adam K. Fontecchio, Kapil R. Dandekar, Timothy P. Kurzweg

    E-Print Network [OSTI]

    Kurzweg, Timothy P.

    ProcessesIntroduction There is a consistent demand for unobtrusive communication between two points, whether-temperature printing methods also enable the use of many non-traditional substrates including polymers and plastics or exposure to the physical strains of milling such as plastics, papers, fabrics, and biological surfaces

  15. Carbon Cycle 2.0: Ramamoorthy Ramesh: Low-cost Solar

    ScienceCinema (OSTI)

    Ramamoorthy Ramesh:

    2010-09-01T23:59:59.000Z

    Feb. 4, 2010: Humanity emits more carbon into the atmosphere than natural processes are able to remove - an imbalance with negative consequences. Carbon Cycle 2.0 is a Berkeley Lab initiative to provide the science needed to restore this balance by integrating the Labs diverse research activities and delivering creative solutions toward a carbon-neutral energy future.

  16. Localized Edge Detection in Sensor Fields Krishna Kant Chintalapudi, Ramesh Govindan

    E-Print Network [OSTI]

    Govindan, Ramesh

    to architect an energy-efficient sensor network for studying these phenomena is to store the detections before time T?". For energy-efficiency reasons, it makes more sense for to design the spatial query- sentation of the boundary has the potential to be more concise (and therefore more energy-efficient) than

  17. NERSC Users Pruess and Ramesh elected to National Academy of Engineering-

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Saleshttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gif Directorate -Advanced code optimization

  18. Solid State Electrochemical Sensors for Nitrogen Oxide (NOx) Detection in Lean Exhaust Gases

    E-Print Network [OSTI]

    Rheaume, Jonathan Michael

    2010-01-01T23:59:59.000Z

    Chou, Steve Dai, Ramesh Koripella, Manny Oliver, Daniel Sadler, PaulChou, Steve Dai, Ramesh Koripella, Manny Oliver, Daniel Sadler, Paul

  19. EJC-independent degradation of nonsense immunoglobulin-m

    E-Print Network [OSTI]

    MŁhlemann, Oliver

    NMD factors Upf1, Upf2 and Upf3 (also called SMG2, SMG3 and SMG4, respectively) are conserved from with the stalled ribosome via the Upf trans-acting factors, which ultimately leads to degradation of the mRNA (ref 40 20 0 120 Rel.ĶmRNA(%) 100 80 60 40 20 0 WT ter310 ter440 ter452 WT Upf1 k.d.: ≠ + ≠ + ≠ + eIF4AIII

  20. EXTENSION WATER SUMMIT PRIORITY: WATER QUALITY

    E-Print Network [OSTI]

    Kane, Andrew S.

    EXTENSION WATER SUMMIT PRIORITY: WATER QUALITY Leadership Team Subcommittee: Mark Clark Karl Havens BJ Jarvis Kelly Morgan Ramesh Reddy #12;Water Quality ≠ Situation (resources) Florida has extensive

  1. Reforming the American Public Sphere: The Media Reform Models of Progressive Television Journalists in the Era of Internet Convergence and Neoliberalism

    E-Print Network [OSTI]

    Fish, Adam

    2012-01-01T23:59:59.000Z

    Winter 2008, UCLA 2007 Kyrgyzstan Participatory MediaSrinivasan, Summer 2007, Kyrgyzstan 2003 Yalahau HumanImplications Within Kyrgyzstan, with Ramesh Srinivasan,

  2. advanced chemistry basins: Topics by E-print Network

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

    material listed extended material on chemical kinetcs. (The topics covered are in the Syllabus below.) This means that Raina, Ramesh 3 Course Syllabus ATMO 613: Advanced...

  3. advanced physical chemistry: Topics by E-print Network

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

    material listed extended material on chemical kinetcs. (The topics covered are in the Syllabus below.) This means that Raina, Ramesh 2 CHEMISTRY 521 GRADUATE PHYSICAL CHEMISTRY...

  4. Combustion Stability in Complex Engineering Flows | Argonne Leadership...

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

    build the scientific insight and understanding necessary to engineer practical solutions to the ubiquitous challenges of combustion instabilities. Catalyst: Ramesh Balakrishnan...

  5. INVESTIGATION In Vivo Determination of Direct Targets of the

    E-Print Network [OSTI]

    Yandell, Mark

    -regulated in NMD mutants, this effect appears to be indirect. KEYWORDS Upf2 reactivation NMD Drosophila RNA to execute NMD is evolutionarily conserved (Behm-Ansmant et al. 2007b), with three core proteins, Upf1, Upf2, and Upf3, found throughout the eukaryotes. Four other well-characterized NMD factors, Smg1, Smg6

  6. An Intensity-augmented Ordinal Measure for Visual Correspondence Anurag Mittal

    E-Print Network [OSTI]

    Mittal, Anurag

    and Modeling Siemens Corporate Research Princeton, NJ 08540 Visvanathan Ramesh Real Time Vision and Modeling Siemens Corporate Research Princeton, NJ 08540 visvanathan.ramesh@siemens.com Abstract Determining that are robust to such transformations. While the most common assumption is that of a linear transformation

  7. Superconducting Magnet Division

    E-Print Network [OSTI]

    McDonald, Kirk

    Superconducting Magnet Division Ramesh Gupta 20T Target Solenoid with HTS Insert Solenoid Capture Laboratory New York, USA http://www.bnl.gov/magnets/staff/gupta #12;Superconducting Magnet Division Ramesh of HTS may significantly reduce the amount of Tungsten shielding · Summary #12;Superconducting Magnet

  8. Design and manipulation of 1-D rugate photonic crystals of porous silicon for chemical sensing applications

    E-Print Network [OSTI]

    King, Brian Henry

    2010-01-01T23:59:59.000Z

    Formulating with Dow Epoxy Resin. Dow Chemical Company, formNo. 125-9326. Dow Liquid Epoxy Resins. Dow Chemical Company,1098 SMG, 1998. Epoxy Additives and Resins. Air Products and

  9. Quality Control of Splicing by the Nonsense-Mediated mRNA Decay Pathway in Saccharomyces cerevisiae

    E-Print Network [OSTI]

    KAWASHIMA, TADASHI RYAN

    2013-01-01T23:59:59.000Z

    Nazarenus, et al. (2003). "The Upf-dependent decay of wild-et al. (2001). "The role of Upf proteins in modulating theproteins in addition to the UPF proteins. These SMG proteins

  10. Natural convection and radiation in small enclosures with a non-attached obstruction

    E-Print Network [OSTI]

    Lloyd, Jimmy Lynn

    2004-09-30T23:59:59.000Z

    spacecraft in reentry (Mills 1999) or a nuclear explosion (Glasstone 1977). More studies appear to be available for enclosures filled with participating media than non-participating media. Ramesh and Venkateshan (1999) had similar findings...

  11. Palaeoclimate Coordinating Lead Authors

    E-Print Network [OSTI]

    -Delmotte (France), Daniel Olago (Kenya), Bette Otto-Bliesner (USA), W. Richard Peltier (Canada), Stefan Rahmstorf. Masson-Delmotte, D. Olago, B. Otto-Bliesner, W.R. Peltier, S. Rahmstorf, R. Ramesh, D. Raynaud, D. Rind

  12. IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, VOL. 13, NO. 2, MARCH 2005 211 Speaker Classification Using Composite

    E-Print Network [OSTI]

    Ephraim, Yariv

    Classification Using Composite Hypothesis Testing and List Decoding William J. J. Roberts, Member, IEEE, Yariv of this manuscript and approving it for publication was Dr. Ramesh A. Gopinath. W. J. J. Roberts and H. W. Sabrin

  13. aeruginosa natural bloom: Topics by E-print Network

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

    natural pigment are due to blooms of plankton, which use the pigment to convert solar energy to chemical energy via Singh, Ramesh P. 3 A day in the life of Microcystis aeruginosa...

  14. activity prolactin tsh: Topics by E-print Network

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

    of pituitary sec- tions. In cotransfection assays, turkey Pit-1 activated the turkey Prl, turkey GH, and rat Prl promoters 3.8-, 3.7-, and 12.5-fold Ramachandran, Ramesh 2...

  15. assays transcriptional activity: Topics by E-print Network

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

    of pituitary sec- tions. In cotransfection assays, turkey Pit-1 activated the turkey Prl, turkey GH, and rat Prl promoters 3.8-, 3.7-, and 12.5-fold Ramachandran, Ramesh 3...

  16. A Solar Re-Skin at FedEx Field | Department of Energy

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

    A Solar Re-Skin at FedEx Field A Solar Re-Skin at FedEx Field August 2, 2011 - 10:40am Addthis Ramamoorthy Ramesh Former Director, SunShot Initiative & Solar Energy Technologies...

  17. Microsoft Word - 2012 Research Day Winners.docx

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

    C-IIAC Adam Manzanares, HPC-5 Xiaoying Pang, AOT-ABS Samrat Choudhury, MST-8 Anirban Chaudhuri, MPA-11 Ryan Baumbach, MPA-CMMS David Fredenburg, WX-9 Honorable Mentions Ramesh...

  18. atlas magnet common: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 30 Common energy scale for magnetism and superconductivity in...

  19. accelerator quadrupole magnets: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 170 Vacuum effects in an asymptotically uniformly accelerated...

  20. antiparallel coiled coil: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 120 Fluctuations, Dynamics, and the Stretch-Coil Transition of...

  1. acidic coiled coil: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 123 Fluctuations, Dynamics, and the Stretch-Coil Transition of...

  2. accelerating structure design: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 103 New model for auroral acceleration: O-shaped potential...

  3. accelerated titration designs: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 43 Collider design issues based on proton-driven plasma...

  4. ac magnetic field: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 126 Anisotropy of magnetic emulsions induced by magnetic and...

  5. acceleration magnetic field: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 31 Simulations of ion acceleration at non-relativistic shocks:...

  6. accelerator technical design: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 152 1 Copyright 2013 by ASME Proceedings of the ASME 2013...

  7. ac magnetic fields: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 126 Anisotropy of magnetic emulsions induced by magnetic and...

  8. aneurysm coiling role: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 206 Fluctuations, Dynamics, and the Stretch-Coil Transition of...

  9. accelerator design workshop: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 84 Collider design issues based on proton-driven plasma...

  10. axicell insert coils: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 162 Fluctuations, Dynamics, and the Stretch-Coil Transition of...

  11. active in-vessel coils: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 139 Fluctuations, Dynamics, and the Stretch-Coil Transition of...

  12. Designing data collection schemes for process capability analysis

    E-Print Network [OSTI]

    Mantri, Nitin Ramesh

    1994-01-01T23:59:59.000Z

    DESIGNING DATA COLLECTION SCHEMES FOR PROCESS CAPABILITY ANALYSIS A Thesis by NITIN RAMESH MANTRI 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 1994 Major Subject: Industrial Engineering DESIGNING DATA COLLECTION SCHEMES FOR PROCESS CAPABILITY ANALYSIS A Thesis by NITIN RAMESH MANTRI Submitted to Texas A&M University in partial fulfillment of the requirements for the degree...

  13. INDEX OF REFRACTION OF SHOCK LOADED SODA-LIME GLASS

    SciTech Connect (OSTI)

    Alexander, C. S. [Sandia National Laboratories, Albuquerque NM 87185 (United States)

    2009-12-28T23:59:59.000Z

    Soda-lime glass (SLG) is a potential low-cost VISAR window for use at moderate shock pressures (up to 2430 GPa) where the material remains transparent. In order for SLG to be practical as a VISAR window, the correction factor, which describes the frequency correction related to the strain dependence of the refractive index, and hence the index of refraction itself, must be characterized as a function of pressure. Characterization data are reported in this paper and compared to previous results. The present data show good agreement with those of Dandekar [J. Appl. Phys. 84, 6614 (1998)] and separate study results by Gibbons and Ahrens [J. Geophys. Res. 76, 5489 (1971)] up to 7 GPa. However, at stresses over 7 GPa, marked discrepancies are evident between the present data and that of Gibbons and Ahrens. Differences in test methods may explain these discrepancies.

  14. Effect of leavening acids on wheat flour tortillas†

    E-Print Network [OSTI]

    Cepeda, Minerva

    1995-01-01T23:59:59.000Z

    SMG Sodium propionate Potassium sorbate Shortening Variable amounts of: Sodium bicarbonate Fumaric acid SAlP SAS MCP SAP P-28 Distilled water Amount' 1000 g 1. 5% 02% 0. 2% 0. 5% 0. 4% 6. 0% 'Sources of tngredients, in the same...

  15. Summer 2014 BOSTONIA 13 In an increasingly

    E-Print Network [OSTI]

    and Harry Susilo has blossomed into a power- ful tool for understanding and promoting ethical behavior, aquaculture, agriculture, food distribution, trading, finance, and tourism. Its products include frozen marine Enterprise Pte Limited, a trading company based in Singapore. A member of the SMG Dean's Asia Advisory Board

  16. Functions of the Nonsense-Mediated mRNA Decay Pathway in Drosophila Development

    E-Print Network [OSTI]

    Krasnow, Mark A.

    that photoshop mutations are loss-of-function mutations in the Drosophila homologs of NMD genes Upf1, Upf2, and Smg1. We find that Upf1 and Upf2 are broadly active during development, and they are required for NMD. Genetic mosaic analysis shows that Upf1 and Upf2 are required for growth and/or survival of imaginal cell

  17. Nucleic Acids Research, 2014 1 doi: 10.1093/nar/gku645

    E-Print Network [OSTI]

    MŁhlemann, Oliver

    -independent interaction between SMG6 and UPF1 is essential for human NMD Pamela Nicholson1 , Christoph Josi1 , Hitomi be degraded by different routes that all require phosphorylated UPF1 (P-UPF1) as a starting point to be recruited to non- sense mRNAs via an interaction with P-UPF1, leading to eventual mRNA degradation

  18. Publications: Recurrence Relations Based on Minimization and Maximization (with

    E-Print Network [OSTI]

    Prasad, Sanjiva

    of approximating travelling salesman tours and minimum spanning trees, (with G. Das and M. Smid), Algorithmica and minimum spanning trees, 1996 (with G. Das and M. Smid), Proc. of FST & TCS, India, LNCS Springer Spanning Trees of Directed Graphs, (with H. Ramesh), to appear in Algorithmica. 1 #12; #15; E√?ciently

  19. Asynchronous intrusion recovery for interconnected web services

    E-Print Network [OSTI]

    Sabatini, David M.

    Asynchronous intrusion recovery for interconnected web services Ramesh Chandra, Taesoo Kim, and tracking down and recovering from such an attack re- quires significant manual effort. Web services for such web services. Aire addresses several challenges, such as propagating repair across services when some

  20. WebWorkload Characterization

    E-Print Network [OSTI]

    Zilles, Craig

    WebWorkload Characterization at a Micro­architectural Level Ramesh Radhakrishnan, Lizy John Laboratory, IBM Austin, TX. #12; Goals of this study n We study the behavior of modernWeb server applications programs to understand how they interact with the underlyingWeb server, hardware and OS under realistic

  1. Innostock 2012 The 12th International Conference on Energy Storage

    E-Print Network [OSTI]

    exchanger (GHE) that may be used with ground source heat pump (GSHP) or underground thermal energy storage Innostock 2012 The 12th International Conference on Energy Storage 1 INNO-U-39 A quasi-two-dimensional standing column well model for ground source heat pump systems Annamalai Ramesh1 , Jeffrey Spitler2 1

  2. BIOLOGY OF REPRODUCTION 64, 611618 (2001) Increased Proliferative Activity and Programmed Cellular Death in the Turkey Hen

    E-Print Network [OSTI]

    Ramachandran, Ramesh

    Cellular Death in the Turkey Hen Pituitary Gland Following Interruption of Incubation Behavior1 R. Ramesh,2 in turkey hens is charac- terized by ovarian regression, hyperprolactinemia, and persis- tent nesting. Nest-deprivation of incubating turkey hens results in disruption of broodiness accompanied by a precipitous de- cline in plasma

  3. Distributed Uplink Scheduling in EV-DO Rev. A Networks

    E-Print Network [OSTI]

    Guerin, Roch

    Distributed Uplink Scheduling in EV-DO Rev. A Networks Ashwin Sridharan (Sprint Nextel) Ramesh Subbaraman, Roch Guťrin (ESE, University of Pennsylvania) #12;5/23/2007 Networking 2007 - Atlanta 2 Overview of Problem ∑ Most modern wireless systems ≠ Deliver high performance through tight control of transmissions

  4. International Workshop on Structural Control, Columbia University, New York, June 2004. Networked Sensing for Structural Health Monitoring

    E-Print Network [OSTI]

    Govindan, Ramesh

    . Networked Sensing for Structural Health Monitoring John Caffrey, Ramesh Govindan, Erik Johnson, Bhaskar networked sensing for structural health monitoring applications. The vision is of many low-power sensor and algorithms for distributed wireless sensor/actuator structural health monitoring networks. INTRODUCTION

  5. Mapping locust habitats in River Ili Delta, Kazakhstan, using Landsat imagery

    E-Print Network [OSTI]

    Latchininsky, Alexandre

    Mapping locust habitats in River Ili Delta, Kazakhstan, using Landsat imagery Ramesh Sivanpillai a Protection, Almaty, Kazakhstan Received 11 August 2005; received in revised form 10 March 2006; accepted 21 March 2006 Available online 3 May 2006 Abstract The River Ili delta in southeast Kazakhstan

  6. Characterization of the AMP-activated protein kinase pathway in chickens Monika Proszkowiec-Weglarz a,, Mark P. Richards a

    E-Print Network [OSTI]

    Ramachandran, Ramesh

    of phosphorylated (active) AMPK in different tissues and in different states of energy balance. Immunocytochemical-Weglarz a,, Mark P. Richards a , Ramesh Ramachandran b , John P. McMurtry a a United States Department homeostasis and, on the whole animal level, in regulating energy balance and food intake. Because the chicken

  7. Global Journal of Environmental Research 2 (3): 102-109, 2008 ISSN 1990-925X

    E-Print Network [OSTI]

    Florida, University of

    Landscape to Eutrophication Alan L. Wright, K. Ramesh Reddy and Susan Newman1 2 3 Everglades Research of eutrophication in wetland ecosystems. We investigated the effects of nutrient loading on the distribution of soil capacity for P1 1 than underlying soil. Assessment of the impacts of eutrophication indicated that P

  8. Knowledge-based Registration & Segmentation of the Left Ventricle: A Level Set Approach

    E-Print Network [OSTI]

    Paragios, Nikos

    Paragios ¬° Mikael Rousson ¬Ę Visvanathan Ramesh ¬° ¬° Siemens Corporate Research ¬Ę I.N.R.I.A. 755 College Road-mail: nikos@scr.siemens.com Abstract In this paper, we propose a level set formulation to deal is obtained using the same criterion where the transformation that aligns the latest segmentation map

  9. Environmental Monitoring and An International Journal Devoted to

    E-Print Network [OSTI]

    Florida, University of

    . Osborne, Gregory L. Bruland, Susan Newman, K. Ramesh Reddy & Sabine Grunwald #12;1 23 Your article-partitioning of soil biogeochemical properties in the Everglades National Park Todd Z. Osborne ∑ Gregory L. Bruland-0510, USA e-mail: osbornet@ufl.edu G. L. Bruland Department of Natural Resources and Environmental

  10. Physics and Applications of Bismuth Ferrite By Gustau Catalan* and James F. Scott*

    E-Print Network [OSTI]

    Wu, Zhigang

    Physics and Applications of Bismuth Ferrite By Gustau Catalan* and James F. Scott* 1. Introduction ferrite, BiFeO3, but they found that they could not grow single crystals and that ceramic specimens were] The current interest in bismuth ferrite was stimulated primarily by a 2003 paper from Ramesh's group,[14

  11. AIRS Science Team Meeting March 17 -19, 2014

    E-Print Network [OSTI]

    (Chair: Joao Teixeira) Joao Teixeira Tom Pagano NASA JPL Introduction 8:30 AM Ramesh Kakar NASA HQ Headquarters Perspective 8:45 AM Graeme Stephens NASA JPL Invited Talk: Toward Understanding Earth's climate Session 6: Sounding, Cal/Val, V7 and Processing Tools (Chair: Tom Pagano) Xavier

  12. This paper has been downloaded from the Building and Environmental Thermal Systems Research Group at Oklahoma State University

    E-Print Network [OSTI]

    at Oklahoma State University (http://www.hvac.okstate.edu) The correct citation for this paper is: Lorenzo in either paper or digital form without ASHRAE's permission. #12;This article was downloaded by: [Oklahoma a & Annamalai Ramesh a a School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater

  13. SCR*: A Toolset for Specifying and Analyzing Software Requirements?

    E-Print Network [OSTI]

    Kirby, Bruce Labaw and Ramesh Bharadwaj Naval Research Laboratory, Code 5546, Washington, DC 20375, USA several classes of errors automatically. The method also provides support for more heavy-duty" tools methods. 1 Introduction Given the high frequency of requirements errors, the serious accidents they may

  14. Reed-Solomon Turbo Product Codes for Optical Communications: From Code Optimization to

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Reed-Solomon Turbo Product Codes for Optical Communications: From Code Optimization to Decoder Design Rapha¬®el Le Bidan, Camille Leroux, Christophe J¬īego, Patrick Adde, Ramesh Pyndiah Abstract--Turbo. In this paper, we investi- gate the use of Reed-Solomon (RS) turbo product codes for 40 Gb/s transmission over

  15. SNR Estimation in Nakagami Fading with Diversity for Turbo Decoding

    E-Print Network [OSTI]

    Chockalingam, A.

    SNR Estimation in Nakagami Fading with Diversity for Turbo Decoding A. Ramesh¬£, A. Chockalingam-√? fading channels without di- versity combining and used this estimate in the decoding of turbo codes. Now equal gain diversity combining. We use our SNR estimates in the iterative decoding of turbo codes

  16. Effect of functionalization on the electrostatic charging, tunneling, and Raman spectroscopy of epitaxial graphene

    E-Print Network [OSTI]

    of epitaxial graphene Jeongmin Hong, Sandip Niyogi, Elena Bekyarova, Mikhail E. Itkis, Palanisamy Ramesh graphene Appl. Phys. Lett. 101, 111602 (2012); 10.1063/1.4752443 Evidences of electrochemical graphene (2012); 10.1063/1.4725489 Pinned and unpinned epitaxial graphene layers on SiC studied by Raman

  17. accelerator design concept: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16...

  18. accelerator magnet program: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16...

  19. accelerators design concepts: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16...

  20. HYDROLOGICAL PROCESSES Hydrol. Process. 18, 343355 (2004)

    E-Print Network [OSTI]

    Florida, University of

    on phosphorus retention in Everglades stormwater treatment area wetlands John R. White,1 * K. Ramesh Reddy1 treatment areas (STAs) comprising a series of constructed wetlands. A series of mesocosms were established on P retention/release by the wetland soil and on effluent water quality. Four treatment combinations

  1. 710 VOLUME 20 NUMBER 6 JUNE 2013 nature structural & molecular biology a rt i c l e s

    E-Print Network [OSTI]

    Bedwell, David M.

    and eukaryotic release factor 3 (eRF3), the central NMD factor up-frameshift 1 (UPF1) instead binds to eRF3 the SMG1≠UPF1≠release factor (SURF) complex25,26. The subsequent interaction of UPF2 and UPF3B with UPF1 phosphorylation of UPF1 (refs. 25,27≠29). UPF1 phosphor- ylation is essential for mammalian NMD and is believed

  2. AN ALMA SURVEY OF SUBMILLIMETER GALAXIES IN THE EXTENDED CHANDRA DEEP FIELD SOUTH: SOURCE CATALOG AND MULTIPLICITY

    SciTech Connect (OSTI)

    Hodge, J. A.; Walter, F.; Decarli, R. [Max-Planck Institute for Astronomy, Koenigstuhl 17, D-69117 Heidelberg (Germany); Karim, A.; Smail, I.; Swinbank, A. M.; Alexander, D. M.; Danielson, A. L. R.; Edge, A. C. [Institute for Computational Cosmology, Durham University, South Road, Durham, DH1 3LE (United Kingdom); Biggs, A. D.; De Breuck, C. [European Southern Observatory, Karl-Schwarzschild Strasse 2, D-85748 Garching (Germany); Ivison, R. J. [UK Astronomy Technology Center, Science and Technology Facilities Council, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom); Weiss, A. [Max-Planck Institut fuer Radioastronomie, Auf dem Huegel 69, D-53121 Bonn (Germany); Bertoldi, F. [Argelander-Institute of Astronomy, Bonn University, Auf dem Huegel 71, D-53121 Bonn (Germany); Brandt, W. N. [Department of Astronomy and Astrophysics, 525 Davey Lab, Pennsylvania State University, University Park, PA 16802 (United States); Chapman, S. C. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA (United Kingdom); Coppin, K. E. K. [Department of Physics, McGill University, 3600 Rue University, Montreal, QC H3A 2T8 (Canada); Cox, P. [IRAM, 300 rue de la piscine, F-38406 Saint-Martin d'Heres (France); Dannerbauer, H. [Universitaet Wien, Institut fuer Astrophysik, Tuerkenschanzstrasse 17, A-1180 Wien (Austria); Greve, T. R., E-mail: hodge@mpia.de [University College London, Department of Physics and Astronomy, Gower Street, London, WC1E 6BT (United Kingdom); and others

    2013-05-01T23:59:59.000Z

    We present an Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 0 survey of 126 submillimeter sources from the LABOCA ECDFS Submillimeter Survey (LESS). Our 870 {mu}m survey with ALMA (ALESS) has produced maps {approx}3 Multiplication-Sign deeper and with a beam area {approx}200 Multiplication-Sign smaller than the original LESS observations, doubling the current number of interferometrically-observed submillimeter sources. The high resolution of these maps allows us to resolve sources that were previously blended and accurately identify the origin of the submillimeter emission. We discuss the creation of the ALESS submillimeter galaxy (SMG) catalog, including the main sample of 99 SMGs and a supplementary sample of 32 SMGs. We find that at least 35% (possibly up to 50%) of the detected LABOCA sources have been resolved into multiple SMGs, and that the average number of SMGs per LESS source increases with LESS flux density. Using the (now precisely known) SMG positions, we empirically test the theoretical expectation for the uncertainty in the single-dish source positions. We also compare our catalog to the previously predicted radio/mid-infrared counterparts, finding that 45% of the ALESS SMGs were missed by this method. Our {approx}1.''6 resolution allows us to measure a size of {approx}9 kpc Multiplication-Sign 5 kpc for the rest-frame {approx}300 {mu}m emission region in one resolved SMG, implying a star formation rate surface density of 80 M{sub Sun} yr{sup -1} kpc{sup -2}, and we constrain the emission regions in the remaining SMGs to be <10 kpc. As the first statistically reliable survey of SMGs, this will provide the basis for an unbiased multiwavelength study of SMG properties.

  3. Conceptual development of a continuous burning system for oil spill remediation

    E-Print Network [OSTI]

    Venkataramaiah, Ramesh H.

    1992-01-01T23:59:59.000Z

    the combustion process mainly attributed to the field of fire safety and thermodynamics. However, the process concept of combustion of oil on water has been changing and a more acceptable theory is Equilibriuin Flash Vaporization (EFV). The analysis of EFV...CONCEPTUAL DEVELOPMENT OF A CONTINUOUS BURNING SYSTEM FOR OIL SPILL REMEDIATION A Thesis RAMESH H. VENKATARAMAIAH Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree...

  4. Low Cost Solar Energy Conversion (Carbon Cycle 2.0)

    ScienceCinema (OSTI)

    Ramesh, Ramamoorthy

    2011-06-08T23:59:59.000Z

    Ramamoorthy Ramesh from LBNL's Materials Science Division speaks at the Carbon Cycle 2.0 kick-off symposium Feb. 2, 2010. We emit more carbon into the atmosphere than natural processes are able to remove - an imbalance with negative consequences. Carbon Cycle 2.0 is a Berkeley Lab initiative to provide the science needed to restore this balance by integrating the Labs diverse research activities and delivering creative solutions toward a carbon-neutral energy future. http://carboncycle2.lbl.gov/

  5. Slide 1

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

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014,Zaleski - PolicyWork Force RetentionOn JuneforCommunityR. Ramesh,

  6. Slide 1

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

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014,Zaleski - PolicyWork Force RetentionOn JuneforCommunityR. Ramesh,GRID

  7. UNVEILING FAR-INFRARED COUNTERPARTS OF BRIGHT SUBMILLIMETER GALAXIES USING PACS IMAGING

    SciTech Connect (OSTI)

    Dannerbauer, H.; Daddi, E.; Aussel, H.; Elbaz, D.; Horeau, B.; Hwang, H. S.; Le Floc'h, E.; Le Pennec, J. [Laboratoire AIM, CEA/DSM-CNRS-Universite Paris Diderot, DAPNIA/Service d'Astrophysique, CEA Saclay, Orme des Merisiers, F-91191 Gif-sur-Yvette Cedex (France); Morrison, G. E. [Institute for Astronomy, University of Hawaii, Manoa, HI 96822 (United States); Altieri, B. [Herschel Science Centre, European Space Astronomy Centre, ESA, Villanueva de la Canada, 28691 Madrid (Spain); Andreani, P. [ESO, Karl-Schwarzschild-Str. 2, D-85748 Garching (Germany); Berta, S.; Schreiber, N. Foerster; Genzel, R. [Max-Planck-Institut fuer Extraterrestrische Physik (MPE), Postfach 1312, 85741 Garching (Germany); Bongiovanni, A.; Cava, A.; Cepa, J. [Instituto de Astrofisica de Canarias, 38205 La Laguna (Spain); Cimatti, A. [Dipartimento di Astronomia, Universita di Bologna, Via Ranzani 1, 40127 Bologna (Italy); Dominguez, H.; Gruppioni, C., E-mail: helmut.dannerbauer@cea.f [INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, I-40127 Bologna (Italy)

    2010-09-10T23:59:59.000Z

    We present a search for Herschel-PACS counterparts of dust-obscured, high-redshift objects previously selected at submillimeter and millimeter wavelengths in the Great Observatories Origins Deep Survey North field. We detect 22 of 56 submillimeter galaxies (SMGs, 39%) with a signal-to-noise ratio of {>=}3 at 100 {mu}m down to 3.0 mJy, and/or at 160 {mu}m down to 5.7 mJy. The fraction of SMGs seen at 160 {mu}m is higher than that at 100 {mu}m. About 50% of radio-identified SMGs are associated with PACS sources. We find a trend between the SCUBA/PACS flux ratio and redshift, suggesting that these flux ratios could be used as a coarse redshift indicator. PACS-undetected submillimeter/millimeter selected sources tend to lie at higher redshifts than the PACS-detected ones. A total of 12 sources (21% of our SMG sample) remain unidentified and the fact that they are blank fields at Herschel-PACS and the Very Large Array 20 cm wavelength may imply higher redshifts for them than for the average SMG population (e.g., z>3-4). The Herschel-PACS imaging of these dust-obscured starbursts at high redshifts suggests that their far-infrared spectral energy distributions have significantly different shapes than template libraries of local infrared galaxies.

  8. Detection of an ultra-bright submillimeter galaxy in the Subaru/XMM-Newton Deep Field using AzTEC/ASTE

    E-Print Network [OSTI]

    Ikarashi, S; Aguirre, J E; Aretxaga, I; Arumugam, V; Austermann, J E; Bock, J J; Bradford, C M; Cirasuolo, M; Earle, L; Ezawa, H; Furusawa, H; Furusawa, J; Glenn, J; Hatsukade, B; Hughes, D H; Iono, D; Ivison, R J; Johnson, S; Kamenetzky, J; Kawabe, R; Lupu, R; Maloney, P; Matsuhara, H; Mauskopf, P D; Motohara, K; Murphy, E J; Nakajima, K; Nakanishi, K; Naylor, B J; Nguyen, H T; Perera, T A; Scott, K S; Takagi, T; Takata, T; Tamura, Y; Tanaka, K; Tsukagoshi, T; Wilner, D J; Wilson, G W; Yun, M S; Zmuidzinas, J

    2010-01-01T23:59:59.000Z

    We report the detection of an extremely bright ($\\sim$34 mJy at 1100 $\\mu$m and $\\sim$73 mJy at 880 $\\mu$m) submillimeter galaxy (SMG), AzTEC-ASTE-SXDF1100.001 (hereafter referred to as SXDF1100.001), discovered in 1100 $\\mu$m observations of the Subaru/XMM-Newton Deep Field using AzTEC on ASTE. Subsequent CARMA 1300 $\\mu$m and SMA 880 $\\mu$m observations successfully pinpoint the location of SXDF1100.001 and suggest that it has two components, extended (FWHM of $\\sim$4^{\\prime\\prime}) and compact (unresolved) ones. Z-Spec on CSO has also been used to obtain a wide band spectrum from 190 to 308 GHz, although no significant emission/absorption lines are found. The derived upper limit to the line-to-continuum flux ratio is 0.1--0.3 (2 $\\sigma$) across the Z-Spec band. Based on the analysis of the derived spectral energy distribution from optical to radio wavelengths of possible counterparts near the SMA/CARMA peak position, we suggest that SXDF1100.001 is a lensed, optically dark SMG lying at $z \\sim 3.4$ behin...

  9. Just Say No to Carbon Emissions (LBNL Science at the Theater)

    ScienceCinema (OSTI)

    Ramesh, Ramamoorthy; Zhou, Nan; Oldenburg, Curt

    2011-04-28T23:59:59.000Z

    Learn about three efforts our grandchildren may thank us for: cheap solar energy, bringing energy efficiency to China, and learning how to store carbon deep underground. Can solar energy be dirt cheap? We're all potentially billionaires when it comes to solar energy. The trick is learning how to convert sunlight to electricity using cheap and plentiful materials. Ramamoorthy Ramesh, an innovative materials scientist at Berkeley Lab, will discuss how he and other researchers are working to make photovoltaic cells using the most abundant elements in the Earth's crust -- materials that are literally as common as dirt. Energy efficiency in China: Nan Zhou is a researcher with Berkeley Labs China Energy Group. She will speak about Chinas energy use and the policies that have been implemented to increase energy efficiency and reduce CO2 emission growth. Her work focuses on building China's capacity to evaluate, adopt and implement low-carbon development strategies. Zhou has an architecture degree from China, and a Master and Ph.D. in Engineering from Japan. Understanding geologic carbon sequestration: Even with continued growth of renewable energy sources such as wind and solar, fossil fuels will likely remain cheap and plentiful for decades to come. Geologist Curt Oldenburg, who heads Berkeley Lab's Geologic Carbon Sequestration Program, will discuss a strategy to reduce carbon emissions from coal and natural gas. It involves pumping compressed CO2 captured from large stationary sources into underground rock formations that can store it for geological time scales.

  10. On the Identification of High Mass Star Forming Regions using IRAS: Contamination by Low-Mass Protostars

    E-Print Network [OSTI]

    Tyler L. Bourke; A. R. Hyland; Garry Robinson

    2005-04-22T23:59:59.000Z

    We present the results of a survey of a small sample (14) of low-mass protostars (L_IR < 10^3 Lsun) for 6.7 GHz methanol maser emission performed using the ATNF Parkes radio telescope. No new masers were discovered. We find that the lower luminosity limit for maser emission is near 10^3 Lsun, by comparison of the sources in our sample with previously detected methanol maser sources. We examine the IRAS properties of our sample and compare them with sources previously observed for methanol maser emission, almost all of which satisfy the Wood & Churchwell criterion for selecting candidate UCHII regions. We find that about half of our sample satisfy this criterion, and in addition almost all of this subgroup have integrated fluxes between 25 and 60 microns that are similar to sources with detectable methanol maser emission. By identifying a number of low-mass protostars in this work and from the literature that satisfy the Wood & Churchwell criterion for candidate UCHII regions, we show conclusively for the first time that the fainter flux end of their sample is contaminated by lower-mass non-ionizing sources, confirming the suggestion by van der Walt and Ramesh & Sridharan.

  11. Concordant plutonium-241-americium-241 dating of environmental samples: results from forest fire ash

    SciTech Connect (OSTI)

    Goldstein, Steven J [Los Alamos National Laboratory; Oldham, Warren J [Los Alamos National Laboratory; Murrell, Michael T [Los Alamos National Laboratory; Katzman, Danny [Los Alamos National Laboratory

    2010-12-07T23:59:59.000Z

    We have measured the Pu, {sup 237}Np, {sup 241}Am, and {sup 151}Sm isotopic systematics for a set of forest fire ash samples from various locations in the western U.S. including Montana, Wyoming, Idaho, and New Mexico. The goal of this study is to develop a concordant {sup 241}Pu (t{sub 1/2} = 14.4 y)-{sup 241}Am dating method for environmental collections. Environmental samples often contain mixtures of components including global fallout. There are a number of approaches for subtracting the global fallout component for such samples. One approach is to use {sup 242}/{sup 239}Pu as a normalizing isotope ratio in a three-isotope plot, where this ratio for the nonglobal fallout component can be estimated or assumed to be small. This study investigates a new, complementary method of normalization using the long-lived fission product, {sup 151}Sm (t{sub 1/2} = 90 y). We find that forest fire ash concentrates actinides and fission products with {approx}1E10 atoms {sup 239}Pu/g and {approx}1E8 atoms {sup 151}Sm/g, allowing us to measure these nuclides by mass spectrometric (MIC-TIMS) and radiometric (liquid scintillation counting) methods. The forest fire ash samples are characterized by a western U.S. regional isotopic signature representing varying mixtures of global fallout with a local component from atmospheric testing of nuclear weapons at the Nevada Test Site (NTS). Our results also show that {sup 151}Sm is well correlated with the Pu nuclides in the forest fire ash, suggesting that these nuclides have similar geochemical behavior in the environment. Results of this correlation indicate that the {sup 151}Sm/{sup 239}Pu atom ratio for global fallout is {approx}0.164, in agreement with an independent estimate of 0.165 based on {sup 137}Cs fission yields for atmospheric weapons tests at the NTS. {sup 241}Pu-{sup 241}Am dating of the non-global fallout component in the forest fire ash samples yield ages in the late 1950's-early 1960's, consistent with a peak in NTS weapons testing at that time. The age results for this component are in agreement using both {sup 242}Pu and {sup 151}Sm normalizations, although the errors for the {sup 151}Sm correction are currently larger due to the greater uncertainty of their measurements. Additional efforts to develop a concordant {sup 241}Pu-{sup 241}Am dating method for environmental collections are underway with emphasis on soil cores.