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Note: This page contains sample records for the topic "yields unprecedented performance" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

ORNL superconducting wire yields unprecedented performance |...  

NLE Websites -- All DOE Office Websites (Extended Search)

ORNL | News | News Releases | 2013 SHARE Media Contact: Morgan McCorkle Communications 865.574.7308 ORNL superconducting wire yields unprecedented performance This figure shows the...

2

ORNL Superconducting Wire Yields Unprecedented Performance |...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Award Winners Take advantage of microwave microscopy, researchers were able to locate graphene islands on graphene. "Point defects" locally enhanced the graphene's ability to...

3

Unprecedented Scalability and Performance of the New NNSA Tri-Lab Linux Capacity Cluster 2  

Science Conference Proceedings (OSTI)

As one of the largest users of supercomputing resources in the world, capacity computing is a critical component in the NNSA's (National Nuclear Security Administration) Advanced Simulation and Computing (ASC) program. The latest acquisitions in this ... Keywords: Scientific Applications, High Performance Computing, Parallel Architectures.

M. Rajan, D. W. Doerfler, P. T. Lin, S. D. Hammond, R. F. Barrett, C. T. Vaughan

2012-11-01T23:59:59.000Z

4

Unprecedented Generation Shifts  

Science Conference Proceedings (OSTI)

The economic recession, which reduced electricity demand, and falling natural gas costs have brought about unprecedented shifts in electric generation. These developments have affected coal-fired generation the most, leading to operational challenges (cycling and shut downs), deterioration of financial performance, and an awareness of the vulnerability of many units to retirement. A third force, though usually affecting natural gas unit operations more than coal, is the build-up of wind generation. This ...

2010-12-31T23:59:59.000Z

5

Unprecedented accurate abundances: signatures of other Earths?  

E-Print Network (OSTI)

For more than 140 years the chemical composition of our Sun has been considered typical of solar-type stars. Our highly differential elemental abundance analysis of unprecedented accuracy (~0.01 dex) of the Sun relative to solar twins, shows that the Sun has a peculiar chemical composition with a ~20% depletion of refractory elements relative to the volatile elements in comparison with solar twins. The abundance differences correlate strongly with the condensation temperatures of the elements. A similar study of solar analogs from planet surveys shows that this peculiarity also holds in comparisons with solar analogs known to have close-in giant planets while the majority of solar analogs without detected giant planets show the solar abundance pattern. The peculiarities in the solar chemical composition can be explained as signatures of the formation of terrestrial planets like our own Earth.

Melendez, J; Gustafsson, B; Yong, D; Ramírez, I

2009-01-01T23:59:59.000Z

6

A Hollow-Ion Resonance of Unprecedented Strength  

NLE Websites -- All DOE Office Websites (Extended Search)

A Hollow-Ion Resonance of Unprecedented Strength A Hollow-Ion Resonance of Unprecedented Strength Print Wednesday, 29 June 2005 00:00 A so-called hollow ion is formed when core...

7

The Collagen Protein Viewed at Unprecedented Detail | Advanced Photon  

NLE Websites -- All DOE Office Websites (Extended Search)

Assembling Nanoparticles the Easy DNA-Way Assembling Nanoparticles the Easy DNA-Way Better, cleaner fuel injectors for automobiles? Poxvirus Potency Uncovered in New Atomic Map Striking Nano Gold Oldest Known Magnet's Secrets Revealed Under High Pressures Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed The Collagen Protein Viewed at Unprecedented Detail FEBRUARY 26, 2008 Bookmark and Share A view of a rat tail tendon using second-harmonic generation microscopy. The collagen fibers show up in green and red. The structure and behavior of one of the most common proteins in our bodies has been resolved at a level of detail never before seen, thanks to new research performed at the Advanced Photon Source (APS) at the U.S.

8

A Hollow-Ion Resonance of Unprecedented Strength  

NLE Websites -- All DOE Office Websites (Extended Search)

A Hollow-Ion Resonance of Unprecedented Strength Print A so-called hollow ion is formed when core electrons are removed or excited to higher energy levels, leaving an empty inner...

9

Mesh Generation for SHARP: Unprecedented Complexity | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Mesh Generation for SHARP: Unprecedented Complexity Mesh Generation for SHARP: Unprecedented Complexity Mesh Generation for SHARP: Unprecedented Complexity January 29, 2013 - 1:36pm Addthis SHARP Supporting Elements During this quarter, the framework team was involved in two primary efforts, mesh generation and implementation of a MOAB-based coupled multi-physics simulation. For mesh generation, finishing touches were put on three major, high-complexity hexahedral meshes, and support was provided for their use in various simulations: MATiS-H, an OECD-NEA experiment for single-phase flow over a rod bundle and grid. [ANL] Nuscale, a hexahedral mesh of the core internals of the Multi-Application Small Light Water Reactor, a 1/3-scale mockup of the Nuscale reactor. [ANL] XX09, a high-fidelity model of the XX09 test fuel assembly used in

10

A Hollow-Ion Resonance of Unprecedented Strength  

NLE Websites -- All DOE Office Websites (Extended Search)

A Hollow-Ion Resonance of Unprecedented Strength Print A Hollow-Ion Resonance of Unprecedented Strength Print A so-called hollow ion is formed when core electrons are removed or excited to higher energy levels, leaving an empty inner shell. Such states can be produced in He-, a fundamental three-electron system and prototypical negative ion. The nuclear Coulomb attraction is efficiently screened in negative ions, greatly enhancing the effects that the electrons have on each other and providing an ideal opportunity to verify and further motivate theoretical models of electron correlation. Our understanding of these basic interactions can elucidate processes of importance in many fields, from the interpretation of cosmic spectra to x-ray lasing efforts using inner-shell ionization and hollow-ion formation. At the Ion-Photon Beamline at the ALS, researchers have detected in negative helium ions a resonant simultaneous double-Auger decay of unprecedented strength, evidence of a triply excited hollow-ion state that has eluded observation for 25 years.

11

A Hollow-Ion Resonance of Unprecedented Strength  

NLE Websites -- All DOE Office Websites (Extended Search)

A Hollow-Ion Resonance of Unprecedented Strength Print A Hollow-Ion Resonance of Unprecedented Strength Print A so-called hollow ion is formed when core electrons are removed or excited to higher energy levels, leaving an empty inner shell. Such states can be produced in He-, a fundamental three-electron system and prototypical negative ion. The nuclear Coulomb attraction is efficiently screened in negative ions, greatly enhancing the effects that the electrons have on each other and providing an ideal opportunity to verify and further motivate theoretical models of electron correlation. Our understanding of these basic interactions can elucidate processes of importance in many fields, from the interpretation of cosmic spectra to x-ray lasing efforts using inner-shell ionization and hollow-ion formation. At the Ion-Photon Beamline at the ALS, researchers have detected in negative helium ions a resonant simultaneous double-Auger decay of unprecedented strength, evidence of a triply excited hollow-ion state that has eluded observation for 25 years.

12

A Hollow-Ion Resonance of Unprecedented Strength  

NLE Websites -- All DOE Office Websites (Extended Search)

A Hollow-Ion Resonance of A Hollow-Ion Resonance of Unprecedented Strength A Hollow-Ion Resonance of Unprecedented Strength Print Wednesday, 29 June 2005 00:00 A so-called hollow ion is formed when core electrons are removed or excited to higher energy levels, leaving an empty inner shell. Such states can be produced in He-, a fundamental three-electron system and prototypical negative ion. The nuclear Coulomb attraction is efficiently screened in negative ions, greatly enhancing the effects that the electrons have on each other and providing an ideal opportunity to verify and further motivate theoretical models of electron correlation. Our understanding of these basic interactions can elucidate processes of importance in many fields, from the interpretation of cosmic spectra to x-ray lasing efforts using inner-shell ionization and hollow-ion formation. At the Ion-Photon Beamline at the ALS, researchers have detected in negative helium ions a resonant simultaneous double-Auger decay of unprecedented strength, evidence of a triply excited hollow-ion state that has eluded observation for 25 years.

13

A Hollow-Ion Resonance of Unprecedented Strength  

NLE Websites -- All DOE Office Websites (Extended Search)

A Hollow-Ion Resonance of Unprecedented Strength Print A Hollow-Ion Resonance of Unprecedented Strength Print A so-called hollow ion is formed when core electrons are removed or excited to higher energy levels, leaving an empty inner shell. Such states can be produced in He-, a fundamental three-electron system and prototypical negative ion. The nuclear Coulomb attraction is efficiently screened in negative ions, greatly enhancing the effects that the electrons have on each other and providing an ideal opportunity to verify and further motivate theoretical models of electron correlation. Our understanding of these basic interactions can elucidate processes of importance in many fields, from the interpretation of cosmic spectra to x-ray lasing efforts using inner-shell ionization and hollow-ion formation. At the Ion-Photon Beamline at the ALS, researchers have detected in negative helium ions a resonant simultaneous double-Auger decay of unprecedented strength, evidence of a triply excited hollow-ion state that has eluded observation for 25 years.

14

Focused R&D For Electrochromic Smart Windowsa: Significant Performance and Yield Enhancements  

SciTech Connect

There is a need to improve the energy efficiency of building envelopes as they are the primary factor governing the heating, cooling, lighting and ventilation requirements of buildings--influencing 53% of building energy use. In particular, windows contribute significantly to the overall energy performance of building envelopes, thus there is a need to develop advanced energy efficient window and glazing systems. Electrochromic (EC) windows represent the next generation of advanced glazing technology that will (1) reduce the energy consumed in buildings, (2) improve the overall comfort of the building occupants, and (3) improve the thermal performance of the building envelope. ''Switchable'' EC windows provide, on demand, dynamic control of visible light, solar heat gain, and glare without blocking the view. As exterior light levels change, the window's performance can be electronically adjusted to suit conditions. A schematic illustrating how SageGlass{reg_sign} electrochromic windows work is shown in Figure I.1. SageGlass{reg_sign} EC glazings offer the potential to save cooling and lighting costs, with the added benefit of improving thermal and visual comfort. Control over solar heat gain will also result in the use of smaller HVAC equipment. If a step change in the energy efficiency and performance of buildings is to be achieved, there is a clear need to bring EC technology to the marketplace. This project addresses accelerating the widespread introduction of EC windows in buildings and thus maximizing total energy savings in the U.S. and worldwide. We report on R&D activities to improve the optical performance needed to broadly penetrate the full range of architectural markets. Also, processing enhancements have been implemented to reduce manufacturing costs. Finally, tests are being conducted to demonstrate the durability of the EC device and the dual pane insulating glass unit (IGU) to be at least equal to that of conventional windows.

Mark Burdis; Neil Sbar

2003-01-31T23:59:59.000Z

15

Space Chamber Reaches Cold Target at Unprecedented Efficiency | U.S. DOE  

NLE Websites -- All DOE Office Websites (Extended Search)

Space Chamber Reaches Cold Target at Unprecedented Efficiency Space Chamber Reaches Cold Target at Unprecedented Efficiency Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » October 2012 Space Chamber Reaches Cold Target at Unprecedented Efficiency Thomas Jefferson Laboratory lends expertise in cryogenics developments. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo Image courtesy of NASA NASA's Space Environment Simulation Lab Chamber A, which is used by the

16

Remote Sensing May Provide Unprecedented Hydrological Data http://www.agu.org/eos_elec, 1999 American Geophysical Union.  

E-Print Network (OSTI)

Remote Sensing May Provide Unprecedented Hydrological Data http://www.agu.org/eos_elec, © 1999 American Geophysical Union. Remote Sensing May Provide Unprecedented Hydrological Data -- Randal D. Koster, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, Md., USA Use of remote sensing

Houser, Paul R.

17

Variable dimensionality in the uranium fluoride/2-methyl-piperazine system: Synthesis and structures of UFO-5, -6, and -7; Zero-, one-, and two-dimensional materials with unprecedented topologies  

SciTech Connect

Recently, low temperature (T < 300 C) hydrothermal reactions of inorganic precursors in the presence of organic cations have proven highly productive for the synthesis of novel solid-state materials. Interest in these materials is driven by the astonishingly diverse range of structures produced, as well as by their many potential materials chemistry applications. This report describes the high yield, phase pure hydrothermal syntheses of three new uranium fluoride phases with unprecedented structure types. Through the systematic control of the synthesis conditions the authors have successfully controlled the architecture and dimensionality of the phase formed and selectively synthesized novel zero-, one-, and two-dimensional materials.

Francis, R.J.; Halasyamani, P.S.; Bee, J.S.; O'Hare, D.

1999-02-24T23:59:59.000Z

18

Estimating Corn Grain Yields  

E-Print Network (OSTI)

This publication explains how to estimate the grain yield of a corn crop before harvest. An interactive grain yield calculator is included. 6 pages, 3 tables, 1 figure.

Blumenthal, Jurg M.; Thompson, Wayne

2009-06-12T23:59:59.000Z

19

Characterizing and predicting the I/O performance of HPC applications using a parameterized synthetic benchmark  

Science Conference Proceedings (OSTI)

The unprecedented parallelism of new supercomputing platforms poses tremendous challenges to achieving scalable performance for I/O intensive applications. Performance assessments using traditional I/O system and component benchmarks are difficult to ...

Hongzhang Shan; Katie Antypas; John Shalf

2008-11-01T23:59:59.000Z

20

YIELD BENEFIT OF CORN EVENT MON 863  

E-Print Network (OSTI)

copies of this document for non-commercial purposes by any means, provide that this Data from field experiments are used to estimate the yield benefit of corn hybrids containing event MON 863 relative to nontransgenic corn hybrids without corn rootworm control and with a soil insecticide for corn rootworm control. Over typical ranges for corn rootworm population pressure, event MON 863 provides a yield benefit of 9-28% relative to no control and of 1.5-4.5 % relative to control with a soil insecticide. For a reasonable range of prices and yields, the value of the event MON 863 yield benefit is $25-$75/ac relative to no control and $4-$12/ac relative to control with a soil insecticide, depending on corn rootworm pressure. Because of the low correlation between yield loss and the root rating difference, a common empirical finding when estimating yield loss with root ratings, the 95% confidence intervals around these averages are quite wide. Though on average, event MON 863 has substantial value, the wide confidence intervals imply that farmers will see a wide variety of actual performance levels in their fields. This uncertainty in the

Paul D. Mitchell; Paul D. Mitchell

2002-01-01T23:59:59.000Z

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


21

Higher Yields Can Be Achieved  

Gasoline and Diesel Fuel Update (EIA)

8 8 Notes: While the current forecast is showing higher distillate production than last year, there is room for yet more volume through refiners switching to higher yields than those being forecast. This will only happen if economic incentives evolve to encourage this change. Current high spreads indicate those incentives may occur. This graph shows the distillate yield pattern over the last few years. Generally yields rise in the fall to build stocks for winter distillate use. On average, the yield increase during the fourth quarter is about 2% higher than the yield average of the lowest yield months of June, July and August. (Recognize that a 1% change in yield is about a 150 MB/D change in distillate production, which is about 4% of winter demand.) During the fall of 1996, the winter season began with very low

22

A versatile detector for total fluorescence and electron yield experiments  

Science Conference Proceedings (OSTI)

The combination of a non-coated silicon photodiode with electron repelling meshes makes a versatile detector for total fluorescence yield and electron yield techniques highly suitable for x-ray absorption spectroscopy. In particular, a copper mesh with a bias voltage allows to suppress or transmit the electron yield signal. The performance of this detection scheme has been characterized by near edge x-ray absorption fine structure studies of thermal oxidized silicon and sapphire. The results show that the new detector probes both electron yield and for a bias voltage exceeding the maximum photon energy the total fluorescence yield.

Thielemann, N. [Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, Albert-Einstein-Str. 15, 12489 Berlin (Germany); Institut fuer Physik, Humboldt-Universitaet zu Berlin, Newtonstrasse 15, 12489 Berlin (Germany); Hoffmann, P. [Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, Albert-Einstein-Str. 15, 12489 Berlin (Germany); Foehlisch, A. [Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, Albert-Einstein-Str. 15, 12489 Berlin (Germany); Institut fuer Physik und Astronomie, Universitaet Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam (Germany)

2012-09-15T23:59:59.000Z

23

Laser Seeding Yields High-Power Coherent Terahertz Radiation  

NLE Websites -- All DOE Office Websites (Extended Search)

Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Researchers at Berkeley Lab have been exploring the ways coherent synchrotron radiation (CSR) is generated in electron storage rings when femtosecond lasers are used to carve out ultrafast x-ray pulses by femtoslicing (see "Tailored Terahertz Pulses from a Laser-Modulated Electron Beam"). In their most recent work, the researchers reported the first observation of seeding an instability of the electron beam by the laser, and they presented a physical model that shows how this occurs under the proper conditions. Such a mechanism makes it possible to control the instability onset and to exploit its gain for the generation of pulses of terahertz CSR of unprecedented power. Terahertz radiation with a wavelength from about 1 cm to about 100 microns between the microwave and the infrared would provide access to a large number of fundamental phenomena. To mention only some of them: excited electrons orbit, small molecules rotate, proteins vibrate, superconducting energy gaps resonate, and gaseous and solid-state plasmas oscillate at terahertz frequencies. But generating terahertz radiation is ordinarily a challenging task for any kind of source, including storage-ring-based synchrotron light sources. The new findings by the ALS group could represent a significant step toward satisfying the need for powerful terahertz sources.

24

Laser Seeding Yields High-Power Coherent Terahertz Radiation  

NLE Websites -- All DOE Office Websites (Extended Search)

Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Researchers at Berkeley Lab have been exploring the ways coherent synchrotron radiation (CSR) is generated in electron storage rings when femtosecond lasers are used to carve out ultrafast x-ray pulses by femtoslicing (see "Tailored Terahertz Pulses from a Laser-Modulated Electron Beam"). In their most recent work, the researchers reported the first observation of seeding an instability of the electron beam by the laser, and they presented a physical model that shows how this occurs under the proper conditions. Such a mechanism makes it possible to control the instability onset and to exploit its gain for the generation of pulses of terahertz CSR of unprecedented power. Terahertz radiation with a wavelength from about 1 cm to about 100 microns between the microwave and the infrared would provide access to a large number of fundamental phenomena. To mention only some of them: excited electrons orbit, small molecules rotate, proteins vibrate, superconducting energy gaps resonate, and gaseous and solid-state plasmas oscillate at terahertz frequencies. But generating terahertz radiation is ordinarily a challenging task for any kind of source, including storage-ring-based synchrotron light sources. The new findings by the ALS group could represent a significant step toward satisfying the need for powerful terahertz sources.

25

The MicroGrid: Using Online Simulation to Predict Application Performance in Diverse Grid Network Environments  

Science Conference Proceedings (OSTI)

Improvements in networking and middleware technologyare enabling large-scale grids that aggregateresources over wide-area networks to support applicationsat unprecedented levels of scale and performance.Unfortunately, existing middleware and tools provide ...

2004-06-01T23:59:59.000Z

26

Incremental criticality and yield gradients  

Science Conference Proceedings (OSTI)

Criticality and yield gradients are two crucial diagnostic metrics obtained from Statistical Static Timing Analysis (SSTA). They provide valuable information to guide timing optimization and timing-driven physical synthesis. Existing work in the literature, ...

Jinjun Xiong; Vladimir Zolotov; Chandu Visweswariah

2008-03-01T23:59:59.000Z

27

Corn Yield Prediction Using Climatology  

Science Conference Proceedings (OSTI)

A method is developed to predict corn yield during the growing season using a plant process model (CERES-Maize), current weather data and climatological data. The procedure is to place the current year's daily weather (temperature and ...

Claude E. Duchon

1986-05-01T23:59:59.000Z

28

Direct laboratory tensile testing of select yielding rock bolt systems  

SciTech Connect

Yielding rock bolt support systems have been developed to accommodate ground movement in shifting ground such as in coal operations; in creeping ground such as salt, trona, and potash; and in swelling ground associated with some clays. These systems, designed to remain intact despite ground movement, should enhance mine safety and help contain costs in areas where rebolting of rigid non-yielding systems is typically required. Four such systems were tested in straight tensile pulls in the laboratory. They include the Slip Nut System from Dywidag Systems International USA, Inc., Ischebeck`s bolt mounted Titan Load Indicator, Rocky Mountain Bolt Company`s Yielding Cable Bolt, and a rock bolt installed variation of the yielding steel post developed by RE/SPEC Inc. The first two systems are currently marketed products and the latter two are prototype systems. Each system responds to load and displacement by yielding in an unique manner. All are designed to yield at predetermined loads. A description of each system and its yield function is provided. Each system was tested over its prescribed yield range in a test machine. At least five tests were performed on each system. Each system yielded and continued to provide support according to its design. Each shows promise for ground control use in shifting or creeping rock. This work helps to illustrate the comparative differences in performance between these specialized systems and the applications where they may be most useful.

VandeKraats, J.D.; Watson, S.O.

1996-08-01T23:59:59.000Z

29

Performance of NCEP Regional Wave Models in Predicting Peak Sea States during the 2005 North Atlantic Hurricane Season  

Science Conference Proceedings (OSTI)

Unprecedented numbers of tropical cyclones occurred in the North Atlantic Ocean and the Gulf of Mexico in 2005. This provides a unique opportunity to evaluate the performance of two operational regional wave forecasting models at the National ...

Yung Y. Chao; Hendrik L. Tolman

2010-10-01T23:59:59.000Z

30

Assessing Maize and Peanut Yield Simulations with Various Seasonal Climate Data in the Southeastern United States  

Science Conference Proceedings (OSTI)

A comprehensive evaluation of crop yield simulations with various seasonal climate data is performed to improve the current practice of crop yield projections. The El Niño–Southern Oscillation (ENSO)-based historical data are commonly used to ...

D. W. Shin; G. A. Baigorria; Y-K. Lim; S. Cocke; T. E. LaRow; James J. O’Brien; James W. Jones

2010-04-01T23:59:59.000Z

31

Data Transfer Nodes Yield Results!  

NLE Websites -- All DOE Office Websites (Extended Search)

DTN DTN Data Transfer Nodes Yield Results August 1, 2011 | Tags: Accelerator Science, Data Transfer, ESnet Linda Vu, +1 510 495 2402, lvu@lbl.gov The ability to reliably move and share data around the globe is essential to scientific collaboration, that's why three Department of Energy (DOE) Scientific Computing Centers-Argonne and Oak Ridge Leadership Computing Facilities, and the National Energy Research Scientific Computing Center (NERSC)-have teamed up to focus on optimizing wide area network (WAN) transfers. This ongoing effort began several years ago when each site deployed dedicated transfer nodes (DTNs), optimized for carrying data between the DOE facilities. Today, engineers from each site continue to meet regularly with DOE's Energy Sciences Network staff (ESnet) to develop strategies

32

High-performance land surface modeling with a Linux cluster  

Science Conference Proceedings (OSTI)

The Land Information System (LIS) was developed at NASA to perform global land surface simulations at a resolution of 1-km or finer in real time. Such unprecedented scales and intensity pose many computational challenges. In this article, we demonstrate ... Keywords: Beowulf cluster, Distributed computing, High-resolution simulation, Hydrology modeling, Parallel computing, Peer-to-peer network

Y. Tian; C. D. Peters-Lidard; S. V. Kumar; J. Geiger; P. R. Houser; J. L. Eastman; P. Dirmeyer; B. Doty; J. Adams

2008-11-01T23:59:59.000Z

33

Changes in diurnal temperature range and national cereal yields  

SciTech Connect

Models of yield responses to temperature change have often considered only changes in average temperature (Tavg), with the implicit assumption that changes in the diurnal temperature range (DTR) can safely be ignored. The goal of this study was to evaluate this assumption using a combination of historical datasets and climate model projections. Data on national crop yields for 1961-2002 in the 10 leading producers of wheat, rice, and maize were combined with datasets on climate and crop locations to evaluate the empirical relationships between Tavg, DTR, and crop yields. In several rice and maize growing regions, including the two major nations for each crop, there was a clear negative response of yields to increased DTR. This finding reflects a nonlinear response of yields to temperature, which likely results from greater water and heat stress during hot days. In many other cases, the effects of DTR were not statistically significant, in part because correlations of DTR with other climate variables and the relatively short length of the time series resulted in wide confidence intervals for the estimates. To evaluate whether future changes in DTR are relevant to crop impact assessments, yield responses to projected changes in Tavg and DTR by 2046-2065 from 11 climate models were estimated. The mean climate model projections indicated an increase in DTR in most seasons and locations where wheat is grown, mixed projections for maize, and a general decrease in DTR for rice. These mean projections were associated with wide ranges that included zero in nearly all cases. The estimated impacts of DTR changes on yields were generally small (<5% change in yields) relative to the consistently negative impact of projected warming of Tavg. However, DTR changes did significantly affect yield responses in several cases, such as in reducing US maize yields and increasing India rice yields. Because DTR projections tend to be positively correlated with Tavg, estimates of yields under extreme warming scenarios were particularly affected by including DTR (up to 10%). Finally, based on the relatively poor performance of climate models in reproducing the magnitude of past DTR trends, it is possible that future DTR changes and associated yield responses will exceed the ranges considered here.

Lobell, D

2007-04-26T23:59:59.000Z

34

Determination of thermal neutron capture gamma yields.  

E-Print Network (OSTI)

A method of analysing Ge(Li) thermal neutron capture gamma spectra to obtain total gamma yields has been developed. Tie method determines both the yields from the well resolved gamma peaks in a spectrum as well as the gamma ...

Harper, Thomas Lawrence

1969-01-01T23:59:59.000Z

35

Climate Effects on Corn Yield in Missouri  

Science Conference Proceedings (OSTI)

Understanding climate effects on crop yield has been a continuous endeavor aiming at improving farming technology and management strategy, minimizing negative climate effects, and maximizing positive climate effects on yield. Many studies have ...

Qi Hu; Gregory Buyanovsky

2003-11-01T23:59:59.000Z

36

Climate Variability and Sugarcane Yield in Louisiana  

Science Conference Proceedings (OSTI)

This paper seeks to understand the role that climate variability has on annual yield of sugarcane in Louisiana. Unique features of sugarcane growth in Louisiana and nonclimatic, yield-influencing factors make this goal an interesting and ...

David Greenland

2005-11-01T23:59:59.000Z

37

Climate Model for Winter Wheat Yield Simulation  

Science Conference Proceedings (OSTI)

Winter wheat yields were simulated by a model requiring climatic data as input for estimating crop evapotranspiration and phenological development. An assumed relationship between the winter wheat yields and the amount and timing of crop water ...

Kenneth G. Hubbard; R. J. Hanks

1983-04-01T23:59:59.000Z

38

Growing Nanowires Horizontally Yields New Benefit: 'Nano ...  

Science Conference Proceedings (OSTI)

Growing Nanowires Horizontally Yields New Benefit: 'Nano-LEDs'. ... Optical microscope image of “nano LEDs” emitting light. ...

2012-10-17T23:59:59.000Z

39

Percent Yield and Mass of Water  

NLE Websites -- All DOE Office Websites (Extended Search)

Percent Yield and Mass of Water Percent Yield and Mass of Water Name: Lisa Status: educator Grade: 9-12 Location: CA Country: USA Date: Winter 2011-2012 Question: When doing a percent yield activity in lab, we use MgCl hexahydrate and CaSO4. How do we factor the mass of the water that is released during the reaction? Replies: Lisa, Based on your question, I am not quite sure what the experiment is. Are you heating the hydrates and looking at the percent-yield of water removed during the heating? If so, then you would calculate the theoretical yield (using stoichiometry and the balanced chemical equation: MgCl2.6H2O --> MgCl2 + 6H2O) of water released, and compare it to the actual yield of water released in the experiment to get percent yield. Greg (Roberto Gregorius) Canisius College

40

2009 Final Corn and Soybean Yield Forecasts  

E-Print Network (OSTI)

The purpose of this brief is to update our previous evaluation of yield potential for corn and soybeans in Illinois, Indiana, and

Scott Irwin; Darrel Good; Mike Tannura

2009-01-01T23:59:59.000Z

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


41

Data Mining Soil Characteristics Affecting Corn Yield  

E-Print Network (OSTI)

Ten soil characteristic variables and corn yield were measured in a field located in southeastern Boone County, Iowa. Measurements were made on a grid of 215 locations throughout the field. We use graphical and simple numerical methods to obtain an understanding of the relationship between the soil characteristics and corn yield.

William F. Christensen; Di Cook

1998-01-01T23:59:59.000Z

42

Increased Radical Cation Yields: Arenes in DCE  

NLE Websites -- All DOE Office Websites (Extended Search)

Increased Yields of Radical Cations by Arene Addition to Irradiated Increased Yields of Radical Cations by Arene Addition to Irradiated 1,2-Dichloroethane Alison M. Funston and John R. Miller Radiat. Phys. Chem., 72, 601-611 (2005). [Find paper at Elsevier Science Direct] Abstract: Pulse radiolysis in chlorinated hydrocarbon liquids such as 1,2-dichloroethane is a versatile and effective method for the generation of solute radical cations. The addition of a large concentration of toluene or benzene to solutions of 1,2-dichloroethane is found to increase the yield of solute radical cations (G = 0.68 molecules/100 eV in 1,2-dichloroethane (Wang et al., 1979) by a factor of 2.5. The increased yield is found for solutes which have a potential of ~ 1.1 V (vs SCE) or below for the S+·/S couple and is due to reaction of the chlorine

43

Fireball yield from fractional intensity diameters  

SciTech Connect

It is desired to develop an empirical formula of the type Y=KD[sup n] where Y is the yield in kilotons and D is the `effective diameter` in feet corrected for temperature and pressure variations if necessary.

Gellert, E. R.

1963-07-31T23:59:59.000Z

44

of oil yields from enhanced oil recovery  

NLE Websites -- All DOE Office Websites (Extended Search)

oil yields from enhanced oil recovery (EOR) and CO oil yields from enhanced oil recovery (EOR) and CO 2 storage capacity in depleted oil reservoirs. The primary goal of the project is to demonstrate that remaining oil can be economically produced using CO 2 -EOR technology in untested areas of the United States. The Citronelle Field appears to be an ideal site for concurrent CO 2 storage and EOR because the field is composed of sandstone reservoirs

45

Effects of Natural Climatic Fluctuations on the Temporal and Spatial Variation in Crop Yields  

Science Conference Proceedings (OSTI)

An investigation was made of variations in corn and soybean yields resulting from natural fluctuations in weather conditions between years in a five-state area in the Midwest. Analyses were performed for crop districts within each state and for ...

Floyd A. Huff; James C. Neill

1982-04-01T23:59:59.000Z

46

Comparison of oilseed yields: a preliminary review  

SciTech Connect

It was assumed that for most oilseed crops, 90% of the oil yield might be considered as profit. To compare oil seeds, pertinent portions of the yield and energy paragraphs from a summary published by Dr. Duke for DOE Grant No. 59-2246-1-6-054-0 with Dr. Bagby as ADODR were reproduced. The seed yields ranged from 200 to 14,000 kg/ha, the low one too low to consider and the high one suspiciously high. The yield of 14,000 kg oil per hectare is equivalent to more than 30 barrels of oil per hectare. The energy species included ambrette, tung-oil tree, cashew, wood-oil tree, mu-oil tree, peanut, mustard greens; rape, colza; black mustard, turnip, safflower, colocynth, coconut, crambe, African oil palm, soybean, cotton, sunflower, Eastern black walnut, Engligh walnut, meadow foam, flax, macadamia nuts, opium poppy, perilla, almond, castorbean, Chinese tallow tree, sesame, jojoba, yellow mustard, stokes' aster, and Zanzibar oilvine. 1 table. (DP)

Duke, J.A. (Economic Botany Lab., Beltsville, MD); Bagby, M.O.

1982-01-01T23:59:59.000Z

47

Global crop yield losses from recent warming  

Science Conference Proceedings (OSTI)

Global yields of the world-s six most widely grown crops--wheat, rice, maize, soybeans, barley, sorghum--have increased since 1961. Year-to-year variations in growing season minimum temperature, maximum temperature, and precipitation explain 30% or more of the variations in yield. Since 1991, climate trends have significantly decreased yield trends in all crops but rice, leading to foregone production since 1981 of about 12 million tons per year of wheat or maize, representing an annual economic loss of $1.2 to $1.7 billion. At the global scale, negative impacts of climate trends on crop yields are already apparent. Annual global temperatures have increased by {approx}0.4 C since 1980, with even larger changes observed in several regions (1). While many studies have considered the impacts of future climate changes on food production (2-5), the effects of these past changes on agriculture remain unclear. It is likely that warming has improved yields in some areas, reduced them in others, and had negligible impacts in still others; the relative balance of these effects at the global scale is unknown. An understanding of this balance would help to anticipate impacts of future climate changes, as well as to more accurately assess recent (and thereby project future) technologically driven yield progress. Separating the contribution of climate from concurrent changes in other factors--such as crop cultivars, management practices, soil quality, and atmospheric carbon dioxide (CO{sub 2}) levels--requires models that describe the response of yields to climate. Studies of future global impacts of climate change have typically relied on a bottom-up approach, whereby field scale, process-based models are applied to hundreds of representative sites and then averaged (e.g., ref 2). Such approaches require input data on soil and management conditions, which are often difficult to obtain. Limitations on data quality or quantity can thus limit the utility of this approach, especially at the local scale (6-8). At the global scale, however, many of the processes and impacts captured by field scale models will tend to cancel out, and therefore simpler empirical/statistical models with fewer input requirements may be as accurate (8, 9). Empirical/statistical models also allow the effects of poorly modeled processes (e.g., pest dynamics) to be captured and uncertainties to be readily quantified (10). Here we develop new, empirical/statistical models of global yield responses to climate using datasets on broad-scale yields, crop locations, and climate variability. We focus on global average yields for the six most widely grown crops in the world: wheat, rice, maize, soybeans, barley, and sorghum. Production of these crops accounts for over 40% of global cropland area (11). 55% of non-meat calories, and over 70% of animal feed (12).

Lobell, D; Field, C

2006-06-02T23:59:59.000Z

48

General results for the decays D yields. pi. ell. nu. and B yields. pi. ell. nu  

SciTech Connect

Results are given for the two form factors for D {yields} {pi}{ell}{nu} and B {yields} {pi}{ell}{nu} at the soft pion limit. The deriviation depends only on pion PCAC and heavy quark spin symmetry. The usefulness of these results is discussed.

Wolfenstein, L. (Washington Univ., Seattle, WA (United States). Inst. for Nuclear Theory Carnegie-Mellon Univ., Pittsburgh, PA (United States). Dept. of Physics)

1992-01-01T23:59:59.000Z

49

Refinery Yield of Liquefied Refinery Gases  

U.S. Energy Information Administration (EIA) Indexed Site

Refinery Yield Refinery Yield (Percent) Product: Liquefied Refinery Gases Finished Motor Gasoline Finished Aviation Gasoline Kerosene-Type Jet Fuel Kerosene Distillate Fuel Oil Residual Fuel Oil Naphtha for Petrochemical Feedstock Use Other Oils for Petrochemical Feedstock Use Special Naphthas Lubricants Waxes Petroleum Coke Asphalt and Road Oil Still Gas Miscellaneous Products Processing Gain(-) or Loss(+) Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Show Data By: Product Area Apr-13 May-13 Jun-13 Jul-13 Aug-13 Sep-13 View History U.S. 5.3 5.4 5.2 5.2 5.1 3.9 1993-2013 PADD 1 4.4 5.1 4.9 4.9 4.6 2.1 1993-2013 East Coast 4.4 5.3 5.1 5.1 4.9 2.2 1993-2013

50

Engineering, Procurement, and Construction Contracts and Performance  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Engineering, Procurement, and Construction Contracts and Engineering, Procurement, and Construction Contracts and Performance Guarantees Engineering, Procurement, and Construction Contracts and Performance Guarantees October 16, 2013 - 5:03pm Addthis Engineering, procurement, and construction (EPC) contracts with long-term performance guarantees are becoming increasingly popular for some renewable energy technologies, such as commercial-scale photovoltaics systems. EPC contracts give the owner unprecedented assurance that the system will provide the long-term energy benefits advertised without wasting time and money with the architectural and engineering (A&E) firm or expensive change orders. These performance guarantees cover the entire installation and go way beyond manufacturer warranties that only cover specific parts and not

51

Overview of tritium fast-fission yields  

SciTech Connect

Tritium production rates are very important to the development of fast reactors because tritium may be produced at a greater rate in fast reactors than in light water reactors. This report focuses on tritium production and does not evaluate the transport and eventual release of the tritium in a fast reactor system. However, if an order-of-magnitude increase in fast fission yields for tritium is confirmed, fission will become the dominant production source of tritium in fast reactors.

Tanner, J.E.

1981-03-01T23:59:59.000Z

52

Calculations to assist in a new Hiroshima yield estimate. Final report, August 19-December 31, 1983  

Science Conference Proceedings (OSTI)

This report describes calculations and analysis performed in an attempt to provide a new estimate for the yield of the Hiroshima weapon. Newly discovered meteorological data was adapted for use in one- and two-dimensional hydrodynamic codes, and a series of calculations was then run for different values of yield. The objective was to determine what yield produced an overpressure record which could best be correlated with an actual trace measured at a parachute-dropped canister. Altitude of the bomb and canister-carrying aircraft at drop time was also a variable parameter. The analysis provides an estimate of 16.6 + 0.3 kt for the yield of the Hiroshima weapon. A drop altitude of near 35,500 feet is shown to be consistent with the signal time-of-arrival. This yield value is within the range of other estimates, but the drop altitude is higher than that previously assumed to be reasonable.

Kennedy, L.W.; Roth, L.A.; Needham, C.E.

1984-06-15T23:59:59.000Z

53

Laboratory measurement of secondary pollutant yields from ozone...  

NLE Websites -- All DOE Office Websites (Extended Search)

Laboratory measurement of secondary pollutant yields from ozone reaction with HVAC filters. Title Laboratory measurement of secondary pollutant yields from ozone reaction with HVAC...

54

Anisotropic yielding of rocks at high temperatures and pressures  

DOE Green Energy (OSTI)

Results to date are: All of the starting materials for the three year project have been collected. Included in our collection are relatively fine-grained, fresh, oriented blocks of schist, gneiss, and micaceous quartzite with well-defined foliations and lineations as well as granite blocks oriented with respect to the principal quarrying orientations, the rift, grain, and hardway. A suite of samples has also been collected from an exposed granite stock and surrounding country rocks in order to evaluate the strengths and distribution of fabrics which may be encountered while drilling. These fabrics appear to be directly related to the forceful emplacement of the pluton. The literature on the mechanics of intrusion has been reviewed with regard to strain gradients and foliation development associated with diapiric flow. This information will be used to evaluate flow of varying fabrics on yield criteria within and surrounding magma chambers. Twenty-three successful experiments have been performed on samples of gneiss cored along six different orientations at temperatures ranging from 25{degrees} to 700{degrees}C. These experiments include extension tests, unconfined compression tests, and compression tests performed at P{sub c} = 100 MPa. Theoretical yield conditions for anisotropic materials have been reviewed and the assumptions upon which they are based probed. These yield conditions will ultimately be used to fit our data on gneiss, and the other foliated rocks under investigation. Two abstracts have been published and oral presentations made at the 1987 Fall Meeting of the American Geophysical Union, based upon our previous DOE-sponsored work on tensile fracturing of quartzite and related work on semi-brittle deformation of granitic rocks. 21 refs., 12 figs., 2 tabs.

Kronenberg, A.K.; Russell, J.E.; Handin, J.; Gottschalk, R.R.; Shea, W.T.

1987-12-01T23:59:59.000Z

55

Effects of No-Till on Yields as Influenced by Crop and Environmental Factors  

Science Conference Proceedings (OSTI)

Th is research evaluated diff erences in yields and associated downside risk from using no-till and tillage practices. Yields from 442 paired tillage experiments across the United States were evaluated with respect to six crops and environmental factors including geographic location, annual precipitation, soil texture, and time since conversion from tillage to no-till. Results indicated that mean yields for sorghum [Sorghum bicolor (L.) Moench] and wheat (Triticum aestivum L.) with no-till were greater than with tillage. In addition, no-till tended to produce similar or greater mean yields than tillage for crops grown on loamy soils in the Southern Seaboard and Mississippi Portal regions. A warmer and more humid climate and warmer soils in these regions relative to the Heartland, Basin and Range, and Fruitful Rim regions appear to favor no-till on loamy soils. With the exception of corn (Zea mays L.) and cotton (Gossypium hirsutum L.) in the Southern Seaboard region, no-till performed poorly on sandy soils. Crops grown in the Southern Seaboard were less likely to have lower no-till yields than tillage yields on loamy soils and thus had lower downside yield risk than other farm resource regions. Consistent with mean yield results, soybean [Glycine max (L.) Merr.] and wheat grown on sandy soils in the Southern Seaboard region using no-till had larger downside yield risks than when produced with no-till on loamy soils. Th e key fi ndings of this study support the hypothesis that soil and climate factors impact no-till yields relative to tillage yields and may be an important factor infl uencing risk and expected return and the adoption of the practice by farmers.

Toliver, Dustin K.; Larson, James A.; Roberts, Roland K.; English, B.C.; De La Torre Ugarte, D. G.; West, Tristram O.

2012-02-07T23:59:59.000Z

56

Performance of Weather Forecast Models in the Rescue of Dr. Ronald Shemenski from the South Pole in April 2001  

Science Conference Proceedings (OSTI)

In late April 2001, an unprecedented late-season flight to Amundsen–Scott South Pole Station was made in the evacuation of Dr. Ronald Shemenski, a medical doctor seriously ill with pancreatitis. This case study analyzes the performance of four of ...

Andrew J. Monaghan; David H. Bromwich; He-Lin Wei; Arthur M. Cayette; Jordan G. Powers; Ying-Hwa Kuo; Matthew A. Lazzara

2003-04-01T23:59:59.000Z

57

Can Naked Singularities Yield Gamma Ray Bursts?  

E-Print Network (OSTI)

Gamma-ray bursts are believed to be the most luminous objects in the Universe. There has been some suggestion that these arise from quantum processes around naked singularities. The main problem with this suggestion is that all known examples of naked singularities are massless and hence there is effectively no source of energy. It is argued that a globally naked singularity coupled with quantum processes operating within a distance of the order of Planck length of the singularity will probably yield energy burst of the order of M_pc^2\\approx2\\times 10^{16} ergs, where M_p is the Planck mass.

H. M. Antia

1998-07-09T23:59:59.000Z

58

DETERMINING THE RATIO OF THE H+ YIELDS TV TO H+ YIELDS TB DECAY RATES FOR LARGE TAN BETA AT THE LARGE HADRON COLLIDER.  

SciTech Connect

We present results on the determination of the observable ratio R = BR(H{sup +} {yields} {tau}{sup +}{nu}{sup -})/BR(H{sup +} {yields} t{bar b}) of charged Higgs boson decay rates as a discriminant quantity between Supersymmetric and non-Supersymmetric models. Simulation of measurements of this quantity through the analysis of the charged Higgs production process gb {yields} tbH{sup +} and relative backgrounds in the two above decay channels has been performed in the context of ATLAS. A {approx} 12-14% accuracy on R can be achieved for tan {beta} = 50, m{sub H{sup {+-}}} = 300-500 GeV and after an integrated luminosity of 300 fb{sup -1}. With this precision measurement, the Large Hadron Collider (LHC) can easily discriminate between models for the two above scenarios, so long as tan {beta} > 20.

ASSAMAGAN,K.A.GUASCH,J.MORETTI,S.PENARANDA,S.

2003-05-27T23:59:59.000Z

59

Measuring sediment yields of storms using PSALT  

E-Print Network (OSTI)

ABSTRACT Storm yields of water and sediment are being measured as part of a study of the effects of roading, logging, and burning in a second-growth redwood forest in northern California. Two primary basins, each about 500 ha, and 13 sub-basins in one of them are measured for sediment flux and the presence and magnitude of sediment-based “cumulative effects”. Study objectives require a more sophisticated sediment sampling design than typically used in watershed experiments. Sediment is sampled and estimated by using PSALT- a probability-based method for sampling that enhances data collection during high flows. The method is applied to storms defined after field data are collected. The sampling sites are visited at arbitrary times during storm periods. Because PSALT data are independent they can be combined to give unbiased estimates of suspended sediment yield and its variance during storms. Problems of applying the method to a large number of basins are disc ussed along with their solutions. Le calcul des debits de sediment provenant des averses en utilisant la methode PSALT Resume Les debits de l’eau et des sediments, provenant des averses sont mesures comme un element de l’etude des effets de la construction de routes, du deboisement et du brulage qui y fait suite dans une fore ^ t de bois rouge deuxieme generation dans le nord de la Californie. Sur deux bassins versants principaux, chacun d’une etendue d’a peu pres 500 ha, ainsi que sur 13 sous-bassins qui se trouvent dans I’un des deux, on mesure le flux des sediments et la presence et la grandeur des “effets cumulatifs ” de ceux-ci. Les objectifs de I’etude exigent un echantillonnage des sediments qui serait plus sophistique que celui qui est typiquement employe dans les analyses des versants. Le sediment est donc echantillonne et estime par moyen de PSALT- une methode d’echantillonnage fondee sur la probabilite, qui donne plus de poids a la quantite des donnees rassemblees pendant les ecoulements abondants. Or, la methode s’applique aux averses 315 Robert B. Thomas 316

Robert B. Thomas

1988-01-01T23:59:59.000Z

60

Framework for the determination of yield limits In pharmaceutical operations  

E-Print Network (OSTI)

The manufacturing production of active pharmaceutical ingredients often involve a series of processing stages in which yield limits are prescribed to ensure that the target yield has been achieved for a batch and that the ...

Liow, Yuh Han John

2010-01-01T23:59:59.000Z

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


61

IMPACT OF HIGH-INPUT PRODUCTION PRACTICES ON SOYBEAN YIELD.  

E-Print Network (OSTI)

??High-input management practices are often heavily marketed to producers to increase soybean [Glycine max (L) Merr.] yield in already high-yielding environments. Field research was conducted… (more)

Jordan, Daniel L.

2010-01-01T23:59:59.000Z

62

Statistical Modeling of Pipeline Delay and Design of Pipeline under Process Variation to Enhance Yield in sub-100nm Technologies  

E-Print Network (OSTI)

Operating frequency of a pipelined circuit is determined by the delay of the slowest pipeline stage. However, under statistical delay variation in sub-100nm technology regime, the slowest stage is not readily identifiable and the estimation of the pipeline yield with respect to a target delay is a challenging problem. We have proposed analytical models to estimate yield for a pipelined design based on delay distributions of individual pipe stages. Using the proposed models, we have shown that change in logic depth and imbalance between the stage delays can improve the yield of a pipeline. A statistical methodology has been developed to optimally design a pipeline circuit for enhancing yield. Optimization results show that, proper imbalance among the stage delays in a pipeline improves design yield by 9% for the same area and performance (and area reduction by about 8.4% under a yield constraint) over a balanced design.

Datta, Animesh; Mukhopadhyay, Saibal; Banerjee, Nilanjan; Roy, Kaushik

2011-01-01T23:59:59.000Z

63

Undergraduate Research at Jefferson Lab - Light Yield Measurements...  

NLE Websites -- All DOE Office Websites (Extended Search)

Emission Characteristics) Field Emission Characteristics Light Yield Measurements of Heavy Photon Search (HPS) Muon Scintillator Hodoscopes Student: Marianne Skolnik School:...

64

Calibration of neutron-yield diagnostics in attenuating and scattering environments  

Science Conference Proceedings (OSTI)

We have performed absolute calibrations of a fusion-neutron-yield copper-activation diagnostic in environments that significantly attenuate and scatter neutrons. We have measured attenuation and scattering effects and have compared the measurements to Monte Carlo simulations using the Monte Carlo N-Particle code. We find that measurements and simulations are consistent within 10%.

Hahn, K. D.; Ruiz, C. L.; Chandler, G. A.; Leeper, R. J.; McWatters, B. R.; Smelser, R. M.; Torres, J. A. [Sandia National Laboratories, Diagnostics and Target Physics, Albuquerque, New Mexico 87111 (United States); Cooper, G. W.; Nelson, A. J. [University of New Mexico, Department of Chemical and Nuclear Engineering, Albuquerque, New Mexico 87131 (United States)

2012-10-15T23:59:59.000Z

65

Snubbing yields high-pressure savings  

SciTech Connect

Producing wells become deficient because of mechanical problems within the well or depletion of the oil or gas reservoir. Workover is an operation within the well's bore to repair equipment malfunction or well situation, or to enhance the well's performance. Workover performed through existing tubing by means of smaller diameter tubing is called thru-tubing workover. Snubbing utilizes jointed tubing or drill pipe and a hydraulic snubbing unit to run tubing or pipe under pressure conditions without killing the well. Tubing is run either through the blowout preventers and bore of an uncompleted well or through the well-head and tubing of a completed well. Hydraulic snubbing units offer many advantages to well productivity. Some of these are discussed in this article.

Parkhill, T.; Loring, G.; Lirette, R.

1987-09-01T23:59:59.000Z

66

Precise Measurement of the Absolute Yield of Fluorescence Photons in Atmospheric Gases  

SciTech Connect

We have performed a measurement of the absolute yield of fluorescence photons at the Fermilab Test Beam. A systematic uncertainty at 5% level was achieved by the use of Cherenkov radiation as a reference calibration light source. A cross-check was performed by an independent calibration using a laser light source. A significant improvement on the energy scale uncertainty of Ultra-High Energy Cosmic Rays is expected.

Ave, M.; /Karlsruhe, Inst. Technol.; Bohacova, M.; /Chicago U., EFI; Daumiller, K.; /Karlsruhe, Inst. Technol.; Di Carlo, P.; /INFN, Aquila; Di Giulio, C.; /INFN, Rome; Luis, P.Facal San; /Chicago U., EFI; Gonzales, D.; /Karlsruhe U., EKP; Hojvat, C.; /Fermilab; Horandel, J.R.; /Nijmegen U., IMAPP; Hrabovsky, M.; /Palacky U.; Iarlori, M.; /INFN, Aquila /Karlsruhe, Inst. Technol.

2011-01-01T23:59:59.000Z

67

Weather-based forecasts of California crop yields  

SciTech Connect

Crop yield forecasts provide useful information to a range of users. Yields for several crops in California are currently forecast based on field surveys and farmer interviews, while for many crops official forecasts do not exist. As broad-scale crop yields are largely dependent on weather, measurements from existing meteorological stations have the potential to provide a reliable, timely, and cost-effective means to anticipate crop yields. We developed weather-based models of state-wide yields for 12 major California crops (wine grapes, lettuce, almonds, strawberries, table grapes, hay, oranges, cotton, tomatoes, walnuts, avocados, and pistachios), and tested their accuracy using cross-validation over the 1980-2003 period. Many crops were forecast with high accuracy, as judged by the percent of yield variation explained by the forecast, the number of yields with correctly predicted direction of yield change, or the number of yields with correctly predicted extreme yields. The most successfully modeled crop was almonds, with 81% of yield variance captured by the forecast. Predictions for most crops relied on weather measurements well before harvest time, allowing for lead times that were longer than existing procedures in many cases.

Lobell, D B; Cahill, K N; Field, C B

2005-09-26T23:59:59.000Z

68

Residential Performance  

NLE Websites -- All DOE Office Websites (Extended Search)

Residential Performance: guidelines, analysis and measurements of window and skylight performance Windows in residential buildings consume approximately 2% of all the energy used...

69

Yield scalings of clusters with fewer than 100 nucleons  

E-Print Network (OSTI)

This document gives a historical review of the scaling of particles yields emitted from excited nuclei. The focus will be on what scaling is, what can be learned from scaling, the underlying theory of why one might expect particle yields to scale, how experimental particle yields have been observed to scale, model systems where particle (cluster) yields do scale and finally scaling observed in the particle yields of various low and medium energy nuclear reaction experiments. The document begins with a basic introduction to scaling in the study of critical phenomena and then reviews Fisher's theory which has all the aspects of scaling and can be directly applied to the counting of clusters, the most reliable measurement accessible to the experimental study of nuclear reactions. Also this document gives a history of the various scalings observed in nuclear reaction experiments and culminates with an estimate of the nuclear liquid-vapor phase boundary based upon measured particle yields.

James B. Elliott; Kyrill A. Bugaev; Luciano G. Moretto; Larry Phair

2006-08-14T23:59:59.000Z

70

Solar Decathlon house continues to yield data | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

homes, learning about solar power and sustainable design along the way. At UT, the "Living Light" house that placed eighth in the 2011 competition is still yielding research...

71

Laser Seeding Yields High-Power Coherent Terahertz Radiation  

NLE Websites -- All DOE Office Websites (Extended Search)

Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Researchers at Berkeley Lab have been exploring the ways coherent synchrotron radiation (CSR) is generated in...

72

Nanopost Arrays Anchor Molecules, Improve Ion Yields for Laser ...  

ORNL 2011-G00228/jcn UT-B ID 200902284 09.2011 Nanopost Arrays Anchor Molecules, Improve Ion Yields for Laser Mass Spectrometry Technology Summary

73

Laser Seeding Yields High-Power Coherent Terahertz Radiation  

NLE Websites -- All DOE Office Websites (Extended Search)

Power Coherent Terahertz Radiation Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Wednesday, 25 April 2007 00:00 Researchers at Berkeley Lab have been exploring...

74

Are Corn Trend Yields Increasing at a Faster Rate?  

E-Print Network (OSTI)

Crop yields are affected by a complex combination of factors, such as weather, seed genetics, and producer-level management techniques. Despite this

Mike Tannura; Scott Irwin; Darrel Good

2008-01-01T23:59:59.000Z

75

Second NIST Stock Investment Study "Quality Stocks" Yield ...  

Science Conference Proceedings (OSTI)

... Study Finds "Quality Stocks" Yield Big Payoff Second NIST Stock Investment Study February 1996 A second NIST stock investment study (the first ...

2013-09-11T23:59:59.000Z

76

Biogas yield performance with co-digestion of pig manure and slaughterhouse wastes.  

E-Print Network (OSTI)

?? Utilization of renewable energy is an important component of the current sustainable global energy strategy. Currently, biogas is considered one of the most economic… (more)

Mamun, Abdulla

2010-01-01T23:59:59.000Z

77

High Xylose Yields from Dilute Acid Pretreatment of Corn Stover Under Process-Relevant Conditions  

SciTech Connect

Pretreatment experiments were carried out to demonstrate high xylose yields at high solids loadings in two different batch pretreatment reactors under process-relevant conditions. Corn stover was pretreated with dilute sulfuric acid using a 4-l Steam Digester and a 4-l stirred ZipperClave{reg_sign} reactor. Solids were loaded at 45% dry matter (wt/wt) after sulfuric acid catalyst impregnation using nominal particle sizes of either 6 or 18 mm. Pretreatment was carried out at temperatures between 180 and 200 C at residence times of either 90 or 105 s. Results demonstrate an ability to achieve high xylose yields (>80%) over a range of pretreatment conditions, with performance showing little dependence on particle size or pretreatment reactor type. The high xylose yields are attributed to effective catalyst impregnation and rapid rates of heat transfer during pretreatment.

Weiss, N. D.; Nagle, N. J.; Tucker, M. P.; Elander, R. T.

2009-01-01T23:59:59.000Z

78

Performative architecture  

E-Print Network (OSTI)

The following thesis explores two central hypotheses. On the one hand it introduces the idea of performative architecture (performance in design), and has done so with the desire to contribute directly to the expansion of ...

Araya, Sergio (Sergio Alejandro)

2011-01-01T23:59:59.000Z

79

A study of the spray injection Reynolds number effects on gasoline yields of an FCC riser reactor  

SciTech Connect

A computational analysis of the combined effects of feed oil injection parameters in a commercial-scale fluidized catalytic cracking riser reactor was performed using a three-phase, multiple species kinetic cracking computer code. The analysis showed that the injection operating parameters (droplet diameter and injection velocity) had strong impacts on the gasoline yields of the FCC unit. A spray injection Reynolds number combining the two parameters was defined. A correlation between the spray injection Reynolds number and the gasoline product yields for various feed injection conditions was developed. A range of spray injection Reynolds number for the maximum gasoline yield was identified.

Bowman, B. J.; Zhou, C. Q.; Chang, S. L.; Lottes, S. A.

2000-04-03T23:59:59.000Z

80

TOWARDS STANDARDIZATION OF CSP YIELD ASSESSMENTS Richard Meyer  

E-Print Network (OSTI)

TOWARDS STANDARDIZATION OF CSP YIELD ASSESSMENTS Richard Meyer 1 , Hans Georg Beyer 2 , Jörg. In the field of concentrating solar power (CSP) standardized procedures for the assessment of energy yields funding for CSP. Other technologies such as wind energy or photovoltaics have already implemented many

Heinemann, Detlev

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


81

Global oil yields: Have we got it seriously wrong?  

Science Conference Proceedings (OSTI)

Up to now, most oilseed crop specialists have assumed that one metric ton (MT) per hectare (1MT/ha) was a pretty good ballpark figure for average oil yields from annual oilseed crops such as canola or sunflower. Global oil yields: Have we got it seriously

82

General results for the decays D {yields} {pi}{ell}{nu} and B {yields} {pi}{ell}{nu}  

SciTech Connect

Results are given for the two form factors for D {yields} {pi}{ell}{nu} and B {yields} {pi}{ell}{nu} at the soft pion limit. The deriviation depends only on pion PCAC and heavy quark spin symmetry. The usefulness of these results is discussed.

Wolfenstein, L. [Washington Univ., Seattle, WA (United States). Inst. for Nuclear Theory]|[Carnegie-Mellon Univ., Pittsburgh, PA (United States). Dept. of Physics

1992-09-01T23:59:59.000Z

83

Performance Management  

Science Conference Proceedings (OSTI)

*. Bookmark and Share. Performance Management. ... If you are unable to access these PDF files, please contact the Office of Workforce Management.

2013-04-20T23:59:59.000Z

84

Commercial Performance  

NLE Websites -- All DOE Office Websites (Extended Search)

Commercial Performance Objectives: To review the market potential for improvements in commercial building glazings, quantify the energy savings potentials, explore potential design...

85

Performance Steelmaking  

Science Conference Proceedings (OSTI)

Bessie Bessemer Furnace and Old Man Steel Re-educate with Performance ... of industry) and a conceptual drawing of a steel mill in nearby Youngstown, Ohio, ...

86

Distribution of independent fission-product yields to isomeric states  

SciTech Connect

A simple one-parameter model is presented for calculating the distribution of independent yield strength between ground and isomeric states of primary fission products formed by neutron-induced fission of actinide nuclei. Yield branching ratios are calculated as a function of neutron energy (thermal, fast, and 14-MeV) for 144 nuclides having isomeric states with T/sub 1/2/ greater than or equal to 0.1 s. The results are proposed for use in the ENDF/B-V yield files.

Madland, D.G.; England, T.R.

1976-11-01T23:59:59.000Z

87

Fission Yield Measurements by Inductively Coupled Plasma Mass-Spectrometry  

SciTech Connect

Correct prediction of the fission products inventory in irradiated nuclear fuels is essential for accurate estimation of fuel burnup, establishing proper requirements for spent fuel transportation and storage, materials accountability and nuclear forensics. Such prediction is impossible without accurate knowledge of neutron induced fission yields. Unfortunately, the accuracy of the fission yields reported in the ENDF/B-VII.0 library is not uniform across all of the data and much of the improvement is desired for certain isotopes and fission products. We discuss our measurements of cumulative fission yields in nuclear fuels irradiated in thermal and fast reactor spectra using Inductively Coupled Plasma Mass Spectrometry.

Irina Glagolenko; Bruce Hilton; Jeffrey Giglio; Daniel Cummings; Karl Grimm; Richard McKnight

2009-11-01T23:59:59.000Z

88

Development of a Cottonseed Dehulling Process to Yield Intact Seed Meats  

E-Print Network (OSTI)

With recent genetic advances in development of gossypol-free cotton varieties, there is interest in retrieving undamaged, dehulled cottonseed kernels for development of new food and feed products. Current methods used to dehull cottonseed provide a low turnout of undamaged kernels that would be desirable for new market niches where intact kernels are desirable. The first objective of the described work was to develop a process for dehulling fuzzy cottonseed to render a high percentage of undamaged seed meats. A series of methods were tested and optimized to identify the suite of processes that provided the highest yields. The final process included steam conditioning, cracking and dehulling using roller mills, and finally separating kernels from hull material using a roller separator and air aspirator. The reintroduction of un-dehulled seed to the roller mills for a second pass significantly increased the final yield of undamaged seed meats. Lab-scale tests show that yields of 65% to 70% can be obtained using this process, representing a significant increase over conventional dehulling, which typically results in less than 5% yields of undamaged kernels. The second objective of the research was to integrate components of the lab-scale milling process into a continuous-flow, pilot-scale system. The performance of the milling system with and without steam conditioning was evaluated. Pilot-scale, continuous-flow tests resulted in undamaged kernel yields of 67.9 ± 3.0% (mean ± 95% confidence interval) during wet milling, comparable to results of initial batch processing and far exceeding yields of whole kernels from current milling techniques. During dry milling, the efficiency of the system to extract all possible kernel material was found to be 68 ± 2.9%, but most of the resulting kernel material is in broken fragments between 3.35 mm and 0.706 mm in diameter.

Nunneley, Jacob Lawrence

2013-05-01T23:59:59.000Z

89

SWAT UNGAUGED: HYDROLOGICAL BUDGET AND CROP YIELD PREDICTIONS IN THE UPPER MISSISSIPPI RIVER BASIN  

Science Conference Proceedings (OSTI)

Physically based, distributed hydrologic models are increasingly used in assessments of water resources, best management practices, and climate and land use changes. Model performance evaluation in ungauged basins is an important research topic. In this study, we propose a framework for developing Soil and Water Assessment Tool (SWAT) input data, including hydrography, terrain, land use, soil, tile, weather, and management practices, for the Upper Mississippi River basin (UMRB). We also present a performance evaluation of SWAT hydrologic budget and crop yield simulations in the UMRB without calibration. The uncalibrated SWAT model ably predicts annual streamflow at 11 USGS gauges and crop yield at a four?digit hydrologic unit code (HUC) scale. For monthly streamflow simulation, the performance of SWAT is marginally poor compared with that of annual flow, which may be due to incomplete information about reservoirs and dams within the UMRB. Further validation shows that SWAT can predict base flow contribution ratio reasonably well. Compared with three calibrated SWAT models developed in previous studies of the entire UMRB, the uncalibrated SWAT model presented here can provide similar results. Overall, the SWAT model can provide satisfactory predictions on hydrologic budget and crop yield in the UMRB without calibration. The results emphasize the importance and prospects of using accurate spatial input data for the physically based SWAT model. This study also examines biofuel?biomass production by simulating all agricultural lands with switchgrass, producing satisfactory results in estimating biomass availability for biofuel production.

Srinivasan, Raghavan; Zhang, Xuesong; Arnold, J. G.

2010-09-01T23:59:59.000Z

90

Device Performance  

DOE Green Energy (OSTI)

In the Device Performance group, within the National Center for Photovoltaic's Measurements and Characterization Division, we measure the performance of PV cells and modules with respect to standard reporting conditions--defined as a reference temperature (25 C), total irradiance (1000 Wm-2), and spectral irradiance distribution (IEC standard 60904-3). Typically, these are ''global'' reference conditions, but we can measure with respect to any reference set. To determine device performance, we conduct two general categories of measurements: spectral responsivity (SR) and current versus voltage (I-V). We usually perform these measurements using standard procedures, but we develop new procedures when required by new technologies. We also serve as an independent facility for verifying device performance for the entire PV community. We help the PV community solve its special measurement problems, giving advice on solar simulation, instrumentation for I-V measurements, reference cells, measurement procedures, and anomalous results. And we collaborate with researchers to analyze devices and materials.

Not Available

2006-06-01T23:59:59.000Z

91

Laser fusion experiment yields record energy at NIF | National Nuclear  

National Nuclear Security Administration (NNSA)

Laser fusion experiment yields record energy at NIF | National Nuclear Laser fusion experiment yields record energy at NIF | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Laser fusion experiment yields record energy at NIF Laser fusion experiment yields record energy at NIF Posted By Office of Public Affairs Lawrence Livermore's National Ignition Facility (NIF) recently focused all

92

ChemCam laser first analyses yield beautiful results  

NLE Websites -- All DOE Office Websites (Extended Search)

laser first analyses ChemCam laser first analyses yield beautiful results The laser instrument has fired nearly 500 shots so far that have produced strong, clear data about the...

93

NETL: News Release - DOE's Produced Water Program Yields New...  

NLE Websites -- All DOE Office Websites (Extended Search)

15, 2007 DOE's Produced Water Program Yields New Web Tool Cost-Effectively Treating Produced Water Boosts U.S. Energy, Water Supplies Washington, DC - A comprehensive new program...

94

Neutrons' view of hydrogen yields insight into HIV drug design...  

NLE Websites -- All DOE Office Websites (Extended Search)

Neutrons' view of hydrogen yields insight into HIV drug design ORNL-led study demonstrates relevance of neutrons in biomedical research An ORNL-led team used neutrons to study the...

95

Weather-based yield forecasts developed for 12 California crops  

E-Print Network (OSTI)

precipitation on California crop yields. Climatic Change. InG. 1999. Understanding crop statis- tics. www.usda.gov/nass/developed for 12 California crops by David B. Lobell,

Lobell, David; Cahill, Kimberly Nicholas; Field, Christopher

2006-01-01T23:59:59.000Z

96

Factors Governing the Total Rainfall Yield from Continental Convective Clouds  

Science Conference Proceedings (OSTI)

Several important factors that govern the total rainfall from continental convective clouds were investigated by tracking thousands of convective cells in Israel and South Africa. The rainfall volume yield (Rvol) of the individual cells that ...

Daniel Rosenfeld; Abraham Gagin

1989-10-01T23:59:59.000Z

97

Laser fusion experiment yields record energy at NIF | National Nuclear  

NLE Websites -- All DOE Office Websites (Extended Search)

Laser fusion experiment yields record energy at NIF | National Nuclear Laser fusion experiment yields record energy at NIF | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Laser fusion experiment yields record energy at NIF Laser fusion experiment yields record energy at NIF Posted By Office of Public Affairs Lawrence Livermore's National Ignition Facility (NIF) recently focused all

98

Surface instability of binary compounds caused by sputter yield amplification  

Science Conference Proceedings (OSTI)

It is demonstrated that the flat surface of a binary material that is subjected to normal-incidence ion bombardment can be unstable even if the curvature dependence of the sputter yields is negligibly small. This unforeseen instability is brought about by sputter yield amplification, and it results in the formation of a disordered array of nanodots with the lighter of the two atomic species concentrated at the peaks of the dots.

Mark Bradley, R. [Department of Physics, Colorado State University, Fort Collins, Colorado 80523 (United States)

2012-06-01T23:59:59.000Z

99

ORIGINAL ARTICLE Maximum Photosynthetic Yield of Green Microalgae  

E-Print Network (OSTI)

# The Author(s) 2010. This article is published with open access at Springerlink.com Abstract The biomass yield on light energy of Dunaliella tertiolecta and Chlorella sorokiniana was investigated in a 1.25- and 2.15-cm light path panel photobioreactor at constant ingoing photon flux density (930 µmol photons m ?2 s ?1). At the optimal combination of biomass density and dilution rate, equal biomass yields on light energy were observed for both light paths for both microalgae. The observed biomass yield on light energy appeared to be based on a constant intrinsic biomass yield and a constant maintenance energy requirement per gram biomass. Using the model of Pirt (New Phytol 102:3–37, 1986), a biomass yield on light energy of 0.78 and 0.75 gmol photons ?1 and a maintenance requirement of 0.0133 and 0.0068 mol photons g ?1 h ?1 were found for D. tertiolecta and C. sorokiniana, respectively. The observed yield decreases steeply at low light supply rates, and according to this model, this is related to the increase of the amount of useable light energy diverted to biomass maintenance. With this study, we demonstrated that the observed biomass yield on light in short light path bioreactors at high biomass densities decreases because maintenance requirements are relatively high at these conditions. All our experimental data for the two strains tested could be described by the physiological models of Pirt (New Phytol 102:3–37, 1986). Consequently, for the design of a photobioreactor, we should maintain a relatively high specific light supply rate. A process with high biomass densities and high yields at high light intensities can only be obtained in short light path photobioreactors.

In Photobioreactors; Jan-willem F. Zijffers; Ke Zheng; Marcel Janssen; Johannes Tramper; René H. Wijffels

2009-01-01T23:59:59.000Z

100

Commercial Performance  

NLE Websites -- All DOE Office Websites (Extended Search)

Commercial Performance Commercial Performance Objectives: To review the market potential for improvements in commercial building glazings, quantify the energy savings potentials, explore potential design solutions, and develop guidelines and tools for building designers so that systems are specified and used in an optimal manner. A special emphasis is placed on the daylighting performance of glazings in commercial buildings since lighting is the single largest energy end use and daylighting can improve both visual performance and the quality of the indoor space as well as saving energy. Technical Approach: This project has two major complementary elements. The first is the exploration and assessment of glazing performance in commercial buildings leading to development of design strategies that reduce unnecessary energy use. The final step is creating design guides and tools that make this design knowledge accessible to practitioners, typically carried out in partnership with others. Although the emphasis is energy impacts, e.g. annual energy use, the performance issues addressed in the guides and tools include all that impact the final glazing selection process, e.g. appearance, glare. The second element is an exploration of daylighting strategies for commercial buildings since lighting energy use is the major energy end use in most buildings. This work develops and evaluates new daylighting devices and designs, assesses performance in commercial buildings, and demonstrates system performance using test cells, test rooms and case study buildings. All energy-related aspects of the design solutions, as well as other critical performance issues, are addressed in this work. Results of this work are integrated into the guides and tools described above. Much of this work has been co-supported by utilities and has been carried on in conjunction with participants in an International Energy Agency Daylighting Task.

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101

THORIUM BREEDER REACTOR EVALUATION. PART 1. FUEL YIELD AND FUEL CYCLE COSTS IN FIVE THERMAL BREEDERS  

SciTech Connect

The performances of aqueous-homogeneous (AHBR), molten-salt (MSBR), liquid-bismuth (LBBR), gas-cooled graphite-moderated (GGBR), and deuterium- moderated gas-cooled (DGBR) breeder reactors were evaluated in respect to fuel yield, fuel cycle costs, and development status. A net electrical plant capability of 1000 Mwe was selected, and the fuel and fertile streams were processed continuously on-site. The maximum annual fuel yields were 1.5 mills/ kwhr. The minimum estimated fuel cycle costs were 0.9, 0.6, 1.0, 1.2, and 1.3 mills/kwhr at fuel yields of were 0.9, 0.9, 1.5, 1.5, and 1.3 mills/kwhr. Only the AHBR and the MSBR are capable of achieving fuel yields substantially in excess of 4%/yr, and therefore, in view of the uncertainties in nuclear data and efficiencies of processing methods, only these two can be listed with confidence as being able to satisfy the main criterion of the AEC longrange thorium breeder program, viz. a doubling time of 25 years or less. The development effort required to bring the various concepts to the stage where a prototype station could be designed was estimated to be least for the AHBR, somewhat more for the MSBR, and several times as much for the other systems. The AHBR was judged to rank first in regard to nuclear capability, fuel cycle potential, and status of development. (auth)

Alexander, L.G.; Carter, W.L.; Chapman, R.H.; Kinyon, R.W.; Miller, J.W.; Van Winkle, R.

1961-05-24T23:59:59.000Z

102

Intensity-resolved Above Threshold Ionization Yields of Atoms with Ultrashort Laser Pulses  

E-Print Network (OSTI)

The above threshold ionization (ATI) spectra provide a diversity of information about a laser-atom ionization process such as laser intensity, pulse duration, carrier envelope phase, and atomic energy level spacing. However, the spatial distribution of intensities inherent in all laser beams reduces the resolution of this information. This research focuses on recovering the intensity-resolved ATI spectra from experimental data using a deconvolution algorithm. Electron ionization yields of xenon were measured for a set of laser pulse intensities using a time of flight (TOF) setup. Horizontally polarized, unchirped, 50fs pulses were used in the ionization process. All laser parameters other than the radiation intensity were held constant over the set of intensity measurements. A deconvolution algorithm was developed based on the experimental parameters. Then the deconvolution algorithm was applied to the experimental data to obtain the intensity-resolved total yield probability and ATI spectra. Finally, an error analysis was performed to determine the stability and accuracy of the algorithm as well as the quality of the data. It was found that the algorithm produced greater contrast for peaks in the ATI spectra where atom specific resonant behavior is observed. Additionally, the total yield probability showed that double ionization may be observed in the ionization yield. The error analysis revealed that the algorithm was stable under the experimental conditions for a range of intensities.

Hart, Nathan Andrew

2011-08-01T23:59:59.000Z

103

Development of Yield and Tensile Strength Design Curves for Alloy 617  

SciTech Connect

The U.S. Department of Energy Very High Temperature Reactor Program is acquiring data in preparation for developing an Alloy 617 Code Case for inclusion in the nuclear section of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code. A draft code case was previously developed, but effort was suspended before acceptance by ASME. As part of the draft code case effort, a database was compiled of yield and tensile strength data from tests performed in air. Yield strength and tensile strength at temperature are used to set time independent allowable stress for construction materials in B&PV Code, Section III, Subsection NH. The yield and tensile strength data used for the draft code case has been augmented with additional data generated by Idaho National Laboratory and Oak Ridge National Laboratory in the U.S. and CEA in France. The standard ASME Section II procedure for generating yield and tensile strength at temperature is presented, along with alternate methods that accommodate the change in temperature trends seen at high temperatures, resulting in a more consistent design margin over the temperature range of interest.

Nancy Lybeck; T. -L. Sham

2013-10-01T23:59:59.000Z

104

Simulation of Crop Yields Using ERA-40: Limits to Skill and Nonstationarity in Weather–Yield Relationships  

Science Conference Proceedings (OSTI)

Reanalysis data provide an excellent test bed for impacts prediction systems, because they represent an upper limit on the skill of climate models. Indian groundnut (Arachis hypogaea L.) yields have been simulated using the General Large-Area ...

A. J. Challinor; T. R. Wheeler; J. M. Slingo; P. Q. Craufurd; D. I. F. Grimes

2005-04-01T23:59:59.000Z

105

Optical performance  

E-Print Network (OSTI)

The initial exploration of environmental art involved a study of light and color, which led to an examination of environmental performance and scenic projection techniques. Eventually, the thesis research resulted in the ...

Haggins-Dunn, Sharon

1983-01-01T23:59:59.000Z

106

Performance Evaluation  

Science Conference Proceedings (OSTI)

The Performance Evaluation Subcommittee of the Technical Committee on Computer Architecture sponsored a workshop at Argonne National Laboratories in October 1971. This issue is in part a result of that workshop.

R. R. Shirley

1972-09-01T23:59:59.000Z

107

Yield and quality of forages grown on mine spoil  

SciTech Connect

Pasture or hayland is a potential use for much of the reclaimed mined land in Kentucky. To determine the usefulness of several species for forage production, two study areas were established, one in the eastern coal fields, the second in the western coal fields. Eight species were seeded in eight different mixtures at each location. Each plot was harvested twice each year to determine yield, and samples were analyzed to determine percent protein, DMD, and sugar. Analysis of variance of the data show that there are significant differences in yield, stand, percent protein and percent DMD among the different species. There is also a significant difference in the yield of the same species between the two study areas. In eastern Kentucky, two mixtures, switchgrass-Interstate sericea lespedeza and Caucasian bluestem-Appalow sericea lespedeza yielded more hay than tall fescue-Interstate sericea, the standard of comparison. In western Kentucky, all seeding mixtures yielded more than the tall fescue Interstate mixture. There is no difference in stand among the species in eastern Kentucky. In western Kentucky, Caucasian bluestem, tall fescue, and switchgrass have better stands than other species.

Kuenstler, W.F.; Henry, D.S.

1980-12-01T23:59:59.000Z

108

Assessment of fission product yields data needs in nuclear reactor applications  

Science Conference Proceedings (OSTI)

Studies on the build-up of fission products in fast reactors have been performed, with particular emphasis on the effects related to the physics of the nuclear fission process. Fission product yields, which are required for burn-up calculations, depend on the proton and neutron number of the target nucleus as well as on the incident neutron energy. Evaluated nuclear data on fission product yields are available for all relevant target nuclides in reactor applications. However, the description of their energy dependence in evaluated data is still rather rudimentary, which is due to the lack of experimental fast fission data and reliable physical models. Additionally, physics studies of evaluated JEFF-3.1.1 fission yields data have shown potential improvements, especially for various fast fission data sets of this evaluation. In recent years, important progress in the understanding of the fission process has been made, and advanced model codes are currently being developed. This paper deals with the semi-empirical approach to the description of the fission process, which is used in the GEF code being developed by K.-H. Schmidt and B. Jurado on behalf of the OECD Nuclear Energy Agency, and with results from the corresponding author's diploma thesis. An extended version of the GEF code, supporting the calculation of spectrum weighted fission product yields, has been developed. It has been applied to the calculation of fission product yields in the fission rate spectra of a MOX fuelled sodium-cooled fast reactor. Important results are compared to JEFF-3.1.1 data and discussed in this paper. (authors)

Kern, K.; Becker, M.; Broeders, C. [Institut fuer Neutronenphysik und Reaktortechnik, KIT Campus Nord, Hermann-von-Helmholtz-Platz 1, 76344 Leopoldshafen (Germany)

2012-07-01T23:59:59.000Z

109

The SPEAR Instrument and On-Orbit Performance  

E-Print Network (OSTI)

The SPEAR (or 'FIMS') instrumentation has been used to conduct the first large-scale spectral mapping of diffuse cosmic far ultraviolet (FUV, 900-1750 AA) emission, including important diagnostics of interstellar hot (10^4 K - 10^6 K) and photoionized plasmas, H_2, and dust scattered starlight. The instrumentation's performance has allowed for the unprecedented detection of astrophysical diffuse far UV emission lines. A spectral resolution of 550 and an imaging resolution of 5' is achieved on-orbit in the Short (900 - 1175 AA) and Long (1335 - 1750 AA) bandpass channels within their respective 7.4 deg x 4.3' and 4.0 deg x 4.6' fields of view. We describe the SPEAR imaging spectrographs, their performance, and the nature and handling of their data.

Jerry Edelstein; Eric Korpela; Joe Adolfo; Mark Bowen; Michael Feuerstein; Jeffrey Hull; Sharon Jelinsky; Kaori Nishikida; Ken McKee; Peter Berg; Ray Chung; Jorg Fischer; Kyoung-Wook Min; Seung-Han Oh; Jin-Guen Rhee; Kwangsun Ryu; Jong-Ho Shinn; Wonyong Han; Ho Jin; Dae-Hee Lee; Uk-Won Nam; Jang-Hyun Park; Kwang-Il Seon; In-Soo Yuk

2006-01-26T23:59:59.000Z

110

The new Integrated Biorefinery Research Facility (IBRF) offers an unprecedented  

E-Print Network (OSTI)

., "SNG From Refuse and Sewage Sludge by the BIOGAS® Process, " Symposium on Clean Fuels From Biomas

111

New Algorithm Enables Unprecedented Sampling, Modeling of Arctic...  

NLE Websites -- All DOE Office Websites (Extended Search)

the U.S. Department of Agriculture's Forest Service used a unique algorithm to divide the state of Alaska into "bioclimatic" regions based on the results of climate and permafrost...

112

DOE Collaboration with National Geographic's JASON Project Yields Three  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Collaboration with National Geographic's JASON Project Yields Collaboration with National Geographic's JASON Project Yields Three CODiE Awards DOE Collaboration with National Geographic's JASON Project Yields Three CODiE Awards July 28, 2010 - 1:00pm Addthis Washington, DC - The JASON Project's multimedia energy curriculum has earned three CODiE Awards from the Software & Information Industry Association (SIIA). Developed with assistance from the Office of Fossil Energy's National Energy Technology Laboratory (NETL), Operation: Infinite Potential explores past, current, and future challenges of energy generation, storage, and consumption. NETL was one of four host sites used in developing the JASON Project's energy curriculum Operation: Infinite Potential. Visiting students learned about energy challenges and conducted research alongside NETL scientists.

113

Recycling Energy Yields Super Savings | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Recycling Energy Yields Super Savings Recycling Energy Yields Super Savings Recycling Energy Yields Super Savings April 23, 2010 - 4:34pm Addthis Joshua DeLung Recycling has been part of going green for a long time, but one company is going a step further by actually recycling energy that has already been used to power manufacturing plants. How do they do it? Recycled Energy Development implements proven technologies that help capture wasted heat and increase their energy efficiency. Dick Munson, senior vice president for public affairs at RED, says facilities that undertake such projects are generally able to cut their energy expenses by up to 20 percent. West Virginia Alloys, in Alloy, W.Va., is a silicon manufacturing plant that makes materials that end up in products such as solar cells and computer chips. In 2013, with help from

114

Technology Partnerships Are Yielding Reliable, Cost-Saving Appliances |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Technology Partnerships Are Yielding Reliable, Cost-Saving Technology Partnerships Are Yielding Reliable, Cost-Saving Appliances Technology Partnerships Are Yielding Reliable, Cost-Saving Appliances November 9, 2011 - 12:01pm Addthis Oak Ridge National Laboratory's facility tests several water heaters at one time. Because of ORNL's accelerated durability testing, they estimate that 10 months of constant operation in its testing facility is comparable to 10 years of service life in a typical residential setting. | Photo courtesy of the Building Technologies Research and Integration Center, ORNL Oak Ridge National Laboratory's facility tests several water heaters at one time. Because of ORNL's accelerated durability testing, they estimate that 10 months of constant operation in its testing facility is comparable to 10

115

Small-Scale Carbon Sequestration Field Test Yields Significant Lessons  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Small-Scale Carbon Sequestration Field Test Yields Significant Small-Scale Carbon Sequestration Field Test Yields Significant Lessons Learned Small-Scale Carbon Sequestration Field Test Yields Significant Lessons Learned May 20, 2009 - 1:00pm Addthis Washington, DC - The Midwest Regional Carbon Sequestration Partnership, one of seven regional partnerships created by the U.S. Department of Energy (DOE) to advance carbon capture and storage technologies, has completed a preliminary geologic characterization and sequestration field test at FirstEnergy's R. E. Burger Plant near Shadyside, Ohio. The project provided significant geologic understanding and "lessons learned" from a region of the Appalachian Basin with few existing deep well penetrations for geologic characterization. The initial targets for the geologic storage of carbon dioxide (CO2) at the

116

New Tool Yields Custom Environmental Data for Lifecycle Analysis |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

New Tool Yields Custom Environmental Data for Lifecycle Analysis New Tool Yields Custom Environmental Data for Lifecycle Analysis New Tool Yields Custom Environmental Data for Lifecycle Analysis September 10, 2012 - 1:00pm Addthis Washington, DC - A new, free online tool developed by a Department of Energy (DOE) laboratory allows users to customize and analyze the environmental impact of various fuels before they are used to create power. Information from the Excel™-based Upstream Dashboard - developed by the Office of Fossil Energy's National Energy Technology Laboratory (NETL) - can be used with other data or models to build an emissions inventory of various feedstocks as part of a comprehensive lifecycle analysis of the fuels. Lifecycle analysis is a new and innovative way to analyze and compare different pathways for producing power and transportation fuels.

117

Technology Partnerships Are Yielding Reliable, Cost-Saving Appliances |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Partnerships Are Yielding Reliable, Cost-Saving Partnerships Are Yielding Reliable, Cost-Saving Appliances Technology Partnerships Are Yielding Reliable, Cost-Saving Appliances November 9, 2011 - 12:01pm Addthis Oak Ridge National Laboratory's facility tests several water heaters at one time. Because of ORNL's accelerated durability testing, they estimate that 10 months of constant operation in its testing facility is comparable to 10 years of service life in a typical residential setting. | Photo courtesy of the Building Technologies Research and Integration Center, ORNL Oak Ridge National Laboratory's facility tests several water heaters at one time. Because of ORNL's accelerated durability testing, they estimate that 10 months of constant operation in its testing facility is comparable to 10 years of service life in a typical residential setting. | Photo courtesy of

118

New Tool Yields Custom Environmental Data for Lifecycle Analysis |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Tool Yields Custom Environmental Data for Lifecycle Analysis Tool Yields Custom Environmental Data for Lifecycle Analysis New Tool Yields Custom Environmental Data for Lifecycle Analysis September 10, 2012 - 1:00pm Addthis Washington, DC - A new, free online tool developed by a Department of Energy (DOE) laboratory allows users to customize and analyze the environmental impact of various fuels before they are used to create power. Information from the Excel™-based Upstream Dashboard - developed by the Office of Fossil Energy's National Energy Technology Laboratory (NETL) - can be used with other data or models to build an emissions inventory of various feedstocks as part of a comprehensive lifecycle analysis of the fuels. Lifecycle analysis is a new and innovative way to analyze and compare different pathways for producing power and transportation fuels.

119

Sputtering yield of Pu bombarded by fission Fragments from Cf  

Science Conference Proceedings (OSTI)

We present results on the yield of sputtering of Pu atoms from a Pu foil, bombarded by fission fragments from a {sup 252}Cf source in transmission geometry. We have found the number of Pu atoms/incoming fission fragments ejected to be 63 {+-} 1. In addition, we show measurements of the sputtering yield as a function of distance from the central axis, which can be understood as an angular distribution of the yield. The results are quite surprising in light of the fact that the Pu foil is several times the thickness of the range of fission fragment particles in Pu. This indicates that models like the binary collision model are not sufficient to explain this behavior.

Danagoulian, Areg [Los Alamos National Laboratory; Klein, Andreas [Los Alamos National Laboratory; Mcneil, Wendy V [Los Alamos National Laboratory; Yuan, Vincent W [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

120

Low Background Radiation Experiment Yields Interesting Preliminary Results  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Low Background Radiation Experiment Yields Interesting Preliminary Low Background Radiation Experiment Yields Interesting Preliminary Results Low Background Radiation Experiment Yields Interesting Preliminary Results May 18, 2011 - 12:00pm Addthis Media Contact Deb Gill U.S. DOE Carlsbad Field Office (575) 234-7270 CARLSBAD, N.M. - New Mexico State University"s Low Background Radiation Experiment (LBRE), which takes place 2,150 feet below the earth"s surface at the Waste Isolation Pilot Plant, recently released some results about the project"s first two years of experimentation. The March 2011 edition of Health Physics printed an article titled "Exploring Biological Effects of Low Level Radiation from the Other Side of Background," summarizing some initial data taken from LBRE and from a sister experiment conducted at the Lovelace Respiratory Research Institute

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While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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121

Evaluation and compilation of fission product yields 1993  

SciTech Connect

This document is the latest in a series of compilations of fission yield data. Fission yield measurements reported in the open literature and calculated charge distributions have been used to produce a recommended set of yields for the fission products. The original data with reference sources, and the recommended yields axe presented in tabular form. These include many nuclides which fission by neutrons at several energies. These energies include thermal energies (T), fission spectrum energies (F), 14 meV High Energy (H or HE), and spontaneous fission (S), in six sets of ten each. Set A includes U235T, U235F, U235HE, U238F, U238HE, Pu239T, Pu239F, Pu241T, U233T, Th232F. Set B includes U233F, U233HE, U236F, Pu239H, Pu240F, Pu241F, Pu242F, Th232H, Np237F, Cf252S. Set C includes U234F, U237F, Pu240H, U234HE, U236HE, Pu238F, Am241F, Am243F, Np238F, Cm242F. Set D includes Th227T, Th229T, Pa231F, Am241T, Am241H, Am242MT, Cm245T, Cf249T, Cf251T, Es254T. Set E includes Cf250S, Cm244S, Cm248S, Es253S, Fm254S, Fm255T, Fm256S, Np237H, U232T, U238S. Set F includes Cm243T, Cm246S, Cm243F, Cm244F, Cm246F, Cm248F, Pu242H, Np237T, Pu240T, and Pu242T to complete fission product yield evaluations for 60 fissioning systems in all. This report also serves as the primary documentation for the second evaluation of yields in ENDF/B-VI released in 1993.

England, T.R.; Rider, B.F.

1995-12-31T23:59:59.000Z

122

Neutron source capability assessment for cumulative fission yields measurements  

Science Conference Proceedings (OSTI)

A recent analysis of high-quality cumulative fission yields data for Pu-239 published in the peer-reviewed literature showed that the quoted experimental uncertainties do not allow a clear statement on how the fission yields vary as a function of energy. [Prussin2009] To make such a statement requires a set of experiments with well 'controlled' and understood sources of experimental errors to reduce uncertainties as low as possible, ideally in the 1 to 2% range. The Inter Laboratory Working Group (ILWOG) determined that Directed Stockpile Work (DSW) would benefit from an experimental program with the stated goal to reduce the measurement uncertainties significantly in order to make a definitive statement of the relationship of energy dependence to the cumulative fission yields. Following recent discussions between Lawrence Livermore National Laboratory (LLNL) and Los Alamos National Laboratory (LANL), there is a renewed interest in developing a concerted experimental program to measure fission yields in a neutron energy range from thermal energy (0.025 eV) to 14 MeV with an emphasis on discrete energies from 0.5 to 4 MeV. Ideally, fission yields would be measured at single energies, however, in practice there are only 'quasi-monoenergetic' neutrons sources of finite width. This report outlines a capability assessment as of June 2011 of available neutron sources that could be used as part of a concerted experimental program to measure cumulative fission yields. In a framework of international collaborations, capabilities available in the United States, at the Atomic Weapons Establishment (AWE) in the United Kingdom and at the Commissariat Energie Atomique (CEA) in France are listed. There is a need to develop an experimental program that will reduce the measurement uncertainties significantly in order to make a definitive statement of the relationship of energy dependence to the cumulative fission yields. Fission and monoenergetic neutron sources are available that could support these fission yield experiments in the US, as well as at AWE and CEA. Considerations that will impact the final choice of experimental venues are: (1) Availability during the timeframe of interest; (2) Ability to accommodate special nuclear materials; (3) Cost; (4) Availability of counting facilities; and (5) Expected experimental uncertainties.

Descalle, M A; Dekin, W; Kenneally, J

2011-04-06T23:59:59.000Z

123

Executive Summary High-Yield Scenario Workshop Series Report  

SciTech Connect

To get a collective sense of the impact of research and development (R&D) on biomass resource availability, and to determine the feasibility that yields higher than baseline assumptions used for past assessments could be achieved to support U.S. energy independence, an alternate “High-Yield Scenario” (HYS) concept was presented to industry experts at a series of workshops held in December 2009. The workshops explored future production of corn/agricultural crop residues, herbaceous energy crops (HECs), and woody energy crops (WECs). This executive summary reports the findings of that workshop.

Leslie Park Ovard; Thomas H. Ulrich; David J. Muth Jr.; J. Richard Hess; Steven Thomas; Bryce Stokes

2009-12-01T23:59:59.000Z

124

Engineered ketol-acid reductoisomerase and alcohol dehydrogenase enable anaerobic 2-methylpropan-1-ol production at theoretical yield in  

E-Print Network (OSTI)

of sugar, starch, and cellulose, but are expected to perform poorly with respect to climate stabilization about crops yields [34] and conversion efficiencies [35], we estimate that these scenarios would potential bioethanol production from wasted crops and crop residues. Biomass Bioenerg 26: 361­375. 36

Arnold, Frances H.

125

Performance Variability  

NLE Websites -- All DOE Office Websites (Extended Search)

Variability Variability of Highly Parallel Architectures William T.C. Kramer 1 and Clint Ryan 2 1 Department of Computing Sciences, University of California at Berkeley and the National Energy Research Scientific Computing Center, Lawrence Berkeley National Laboratory 2 Department of Computing Sciences, University of California at Berkeley Abstract. The design and evaluation of high performance computers has concentrated on increasing computational speed for applications. This performance is often measured on a well configured dedicated sys- tem to show the best case. In the real environment, resources are not always dedicated to a single task, and systems run tasks that may influ- ence each other, so run times vary, sometimes to an unreasonably large extent. This paper explores the amount of variation seen across four large distributed memory systems in a systematic manner. It then

126

Study of nonproportionality in the light yield of inorganic scintillators  

SciTech Connect

Using a phenomenological approach, the light yield is derived for inorganic scintillators as a function of the rates of linear, bimolecular, and Auger processes occurring in the electron track initiated by an x ray or a {gamma}-ray photon. A relation between the track length and incident energy is also derived. It is found that the nonproportionality in the light yield can be eliminated if either nonlinear processes of interaction among the excited electrons, holes, and excitons can be eliminated from occurring or the high density situation can be relieved by diffusion of carriers from the track at a faster rate than the rate of activation of nonlinear processes. The influence of the track length and radius on the yield nonproportionality is discussed in view of the known experimental results. Inventing new inorganic scintillating materials with high carrier mobility can lead to a class of proportional inorganic scintillators. Results agree qualitatively with experimental results for the dependence of light yield on the incident energy.

Singh, Jai [School of Engineering and IT, B-purple-12, Faculty of EHSE, Charles Darwin University, Darwin, Northern Territory 0909 (Australia)

2011-07-15T23:59:59.000Z

127

Application of CHL model for estimating biomass pyrolysis yield  

Science Conference Proceedings (OSTI)

The pyrolysis of wood biomass represents a valid technique for recovering "green" fuel from residues of forestry and other activities, in agriculture as in industry, where wood and other plant residues are available. Wood biomass is essentially a composite ... Keywords: CHL model, biogas yield, biomass, numerical analysis, pyrolysis, rate estimation

Francesco Marra

2007-12-01T23:59:59.000Z

128

Climate Variability and Corn Yields in Semiarid Ceará, Brazil  

Science Conference Proceedings (OSTI)

Understanding of climate influence on crop yields can help in the design of policies to reduce climate-related vulnerability in many parts of the world, including the target of this case study—the state of Ceará, Brazil. The study has examined ...

Liqiang Sun; Huilan Li; M. Neil Ward; David F. Moncunill

2007-02-01T23:59:59.000Z

129

Rheopexy and tunable yield stress of carbon black suspensions  

E-Print Network (OSTI)

We show that besides simple or thixotropic yield stress fluids there exists a third class of yield stress fluids. This is illustrated through the rheological behavior of a carbon black suspension, which is shown to exhibit a viscosity bifurcation effect around a critical stress along with rheopectic trends, i.e., after a preshear at a given stress the fluid tends to accelerate when it is submitted to a lower stress. Viscosity bifurcation displays here original features: the yield stress and the critical shear rate depend on the previous flow history. The most spectacular property due to these specificities is that the material structure can be adjusted at will through an appropriate flow history. In particular it is possible to tune the material yield stress to arbitrary low values. A simple model assuming that the stress is the sum of one component due to structure deformation and one component due to hydrodynamic interactions predicts all rheological trends observed and appears to well represent quantitatively the data.

Guillaume Ovarlez; Laurent Tocquer; François Bertrand; Philippe Coussot

2012-11-16T23:59:59.000Z

130

High energy ionization in liquids: The free ion yield  

SciTech Connect

This paper considers some recent experimental results (n-hexane, neopentane, 2,2,4,4-tetramethylpentane, 2,2,4-trimethylpentane) which show how G{sub fi}(number of ion pairs or free ions per 100 eV absorbed) depends on conditions. The results provide insight into factors which determine free ion yield: molecular structure, field, temperature, tracks, density.

Holroyd, R.

1993-09-01T23:59:59.000Z

131

U.S. Refinery Yield of Petroleum Coke (Percent)  

U.S. Energy Information Administration (EIA)

U.S. Refinery Yield of Petroleum Coke (Percent) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9; 1990's: 4.3: 4.3: 4.3: ...

132

U.S. Refinery Yield of Petroleum Coke (Percent)  

U.S. Energy Information Administration (EIA)

U.S. Refinery Yield of Petroleum Coke (Percent) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec; 1993: 4.4: 4.6: 4.5: 4.3: 4.1: 4.2: 4.4: 4.3: ...

133

Weather-Corrected Performance Ratio  

Science Conference Proceedings (OSTI)

Photovoltaic (PV) system performance depends on both the quality of the system and the weather. One simple way to communicate the system performance is to use the performance ratio (PR): the ratio of the electricity generated to the electricity that would have been generated if the plant consistently converted sunlight to electricity at the level expected from the DC nameplate rating. The annual system yield for flat-plate PV systems is estimated by the product of the annual insolation in the plane of the array, the nameplate rating of the system, and the PR, which provides an attractive way to estimate expected annual system yield. Unfortunately, the PR is, again, a function of both the PV system efficiency and the weather. If the PR is measured during the winter or during the summer, substantially different values may be obtained, making this metric insufficient to use as the basis for a performance guarantee when precise confidence intervals are required. This technical report defines a way to modify the PR calculation to neutralize biases that may be introduced by variations in the weather, while still reporting a PR that reflects the annual PR at that site given the project design and the project weather file. This resulting weather-corrected PR gives more consistent results throughout the year, enabling its use as a metric for performance guarantees while still retaining the familiarity this metric brings to the industry and the value of its use in predicting actual annual system yield. A testing protocol is also presented to illustrate the use of this new metric with the intent of providing a reference starting point for contractual content.

Dierauf, T.; Growitz, A.; Kurtz, S.; Cruz, J. L. B.; Riley, E.; Hansen, C.

2013-04-01T23:59:59.000Z

134

Isotopic yield measurement in the heavy mass region for {sup 239}Pu thermal neutron induced fission  

SciTech Connect

Despite the huge number of fission yield data available in the different evaluated nuclear data libraries, such as JEFF-3.1.1, ENDF/B-VII.0, and JENDL-4.0, more accurate data are still needed both for nuclear energy applications and for our understanding of the fission process itself. It is within the framework of this that measurements on the recoil mass spectrometer Lohengrin (at the Institut Laue-Langevin, Grenoble, France) was undertaken, to determine isotopic yields for the heavy fission products from the {sup 239}Pu(n{sub th},f) reaction. In order to do this, a new experimental method based on {gamma}-ray spectrometry was developed and validated by comparing our results with those performed in the light mass region with completely different setups. Hence, about 65 fission product yields were measured with an uncertainty that has been reduced on average by a factor of 2 compared to that previously available in the nuclear data libraries. In addition, for some fission products, a strongly deformed ionic charge distribution compared to a normal Gaussian shape was found, which was interpreted as being caused by the presence of a nanosecond isomeric state. Finally, a nuclear charge polarization has been observed in agreement, with the one described on other close fissioning systems.

Bail, A.; Serot, O.; Mathieu, L.; Litaize, O.; Materna, T.; Koester, U.; Faust, H.; Letourneau, A.; Panebianco, S. [CEA, DEN-Cadarache, F-13108 Saint-Paul-lez-Durance (France); Institut Laue Langevin, 6 rue Jules Horowitz, B.P. 156, F-38042, Grenoble (France); CEA, DSM-Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette (France)

2011-09-15T23:59:59.000Z

135

Experimental and analytical studies of hydrocarbon yields under dry-, steam-, and steam-with-propane distillation  

E-Print Network (OSTI)

Simulation study has shown oil production is accelerated when propane is used as an additive during steam injection. To better understand this phenomenon, distillation experiments were performed using San Ardo crude oil (12oAPI). For comparison purposes, three distillation processes were investigated: dry-, steam-, and steam-propanedistillation, the latter at the propane-to-steam mass ratio of 0.05 at steam injection rate 0.5 g/min. Two sets of the distillation experiments were carried out. In the first set of experiments, the distillation temperatures ranged from 115ºC to 300ºC. Distillation pressures ranged from 0 psig to 998 psig for steam- and steam-propane distillation. The temperature-pressure combination used represented 15ºC superheated steam conditions. In the second set of experiments, the distillation temperatures ranged from 220oC to 300oC at 260 psig. The temperature pressure combination used represented field conditions for crude oil. For both conditions, the cell was kept at each temperature plateau (cut) until no increase occurs in distillation yields. Distillation yields were collected at each cut, and the volume and weight of water and hydrocarbon measured. Based on these experiments, a thermodynamic modeling framework was developed that describes distillation effect and oil production for steam distillation experiments. The model is based on composition of crude oil, molecular weight of heavy fraction. The analytical model results are compared against the experimental data for synthetic crude and crude oil to verify the validity of the model. Main results of the study may be summarized as follows. The yields for steam distillation for saturated conditions of Tsat+15 o C and Psat is 10 % and with addition of 5% of propane to steam no significant increase occurs in distillation yields. The yields for steam distillation for field conditions of 260 psig and temperature range (220 ~300oC) is 18 % and with addition of 5% of propane to steam no significant increase in distillation yields. The results indicate that propane has minimal distillation effect on the heavy oil. This occurs possibly because of lesser amount of light fractions in the heavy oil that enhance the separation of components in the oil caused by the concentration gradient.

Jaiswal, Namit

2003-05-01T23:59:59.000Z

136

Search for the Higgs Boson in the H{yields}WW{yields}l{nu}jj Decay Channel in pp Collisions at {radical}(s)=7 TeV with the ATLAS Detector  

Science Conference Proceedings (OSTI)

A search for a Higgs boson has been performed in the H{yields}WW{yields}l{nu}jj channel in 1.04 fb{sup -1} of pp collision data at {radical}(s)=7 TeV recorded with the ATLAS detector at the Large Hadron Collider. No significant excess of events is observed over the expected background and limits on the Higgs boson production cross section are derived for a Higgs boson mass in the range 240 GeVyields}WW production is 3.1 pb, or 2.7 times the standard model prediction.

Aad, G.; Ahles, F.; Beckingham, M.; Bernhard, R.; Bitenc, U.; Bruneliere, R.; Caron, S.; Christov, A.; Consorti, V.; Eckert, S.; Fehling-Kaschek, M.; Flechl, M.; Glatzer, J. [Fakultaet fuer Mathematik und Physik, Albert-Ludwigs-Universitaet, Freiburg i. Br. (Germany); Abbott, B. [Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman Oklahoma (United States); Abdallah, J.; Bosman, M.; Casado, M. P.; Cavalli-Sforza, M.; Conidi, M. C.; Demirkoz, B. [Institut de Fisica d'Altes Energies and Departament de Fisica de la Universitat Autonoma de Barcelona and ICREA, Barcelona (Spain)

2011-12-02T23:59:59.000Z

137

Secretary of Energy Recognizes Federal Employees for Efforts Yielding $18  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Secretary of Energy Recognizes Federal Employees for Efforts Secretary of Energy Recognizes Federal Employees for Efforts Yielding $18 Million in Energy Savings Secretary of Energy Recognizes Federal Employees for Efforts Yielding $18 Million in Energy Savings November 1, 2007 - 4:21pm Addthis 2007 Federal Energy and Water Management Awardees Honored WASHINGTON, DC - U.S. Department of Energy Secretary Samuel W. Bodman today honored 25 individuals, teams, and organizations throughout the Federal government with the 2007 Federal Energy and Water Management Award for saving taxpayers more than $18 million in energy costs over one year through energy efficiency improvements and innovative project management strategies. This work will help meet goals set forth in President Bush's Executive Order #13423, which sets the Federal government on a rigorous

138

Purple traps yield Reservation's first detection of Emerald Ash Borer  

NLE Websites -- All DOE Office Websites (Extended Search)

traps yield Reservation's first detection of Emerald Ash Borer traps yield Reservation's first detection of Emerald Ash Borer The question of whether or not DOE's forests are infested with Emerald Ash Borer (EAB) has been answered. On May 10, a trap on Highway 95 at the Highway 58 interchange produced the first instance of the destructive non-native insect in Roane County. Five days later, a second trap on Bethel Valley Road near the East Portal turned up the first capture in Anderson County. "Unfortunately, these finds signal the beginning of a decline of ash species throughout the reservation" according to Greg Byrd, forester with the ORNL Natural Resources Program. "Dieback will become more prominent as the insect populations expand. Native ash trees have little defense against this pest, which was

139

Secretary of Energy Recognizes Federal Employees for Efforts Yielding $18  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Recognizes Federal Employees for Efforts Recognizes Federal Employees for Efforts Yielding $18 Million in Energy Savings Secretary of Energy Recognizes Federal Employees for Efforts Yielding $18 Million in Energy Savings November 1, 2007 - 4:21pm Addthis 2007 Federal Energy and Water Management Awardees Honored WASHINGTON, DC - U.S. Department of Energy Secretary Samuel W. Bodman today honored 25 individuals, teams, and organizations throughout the Federal government with the 2007 Federal Energy and Water Management Award for saving taxpayers more than $18 million in energy costs over one year through energy efficiency improvements and innovative project management strategies. This work will help meet goals set forth in President Bush's Executive Order #13423, which sets the Federal government on a rigorous

140

Scalar and vector contributions to p p yields. Lambda. Lambda  

SciTech Connect

A quark model which includes both scalar and vector contributions to the reaction {bar p}p {yields} {bar {Lambda}}{Lambda} is presented. DWBA calculations of differential cross sections, polarizations and spin correlation coefficients are compared to experimental results at several energies. The results are sensitive to details of the reaction mechanism and to the parameters of the {bar {Lambda}}{Lambda} interaction. 10 refs., 5 figs.

Alberg, M.A. (Seattle Univ., WA (USA). Dept. of Physics Washington Univ., Seattle, WA (USA). Dept. of Physics); Henley, E.M.; Wilets, L. (Washington Univ., Seattle, WA (USA). Dept. of Physics); Kunz, P.D. (Colorado Univ., Boulder, CO (USA). Nuclear Physics Lab.)

1990-01-01T23:59:59.000Z

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


141

Managing Forests for Water Yield: The Importance of Scale  

DOE Green Energy (OSTI)

Examination of expected change in water yield for a large area where vegetation thinning has been proposed in the Sierra Mountains of California, indicates that the size of the area has an important bearing on annual runoff. Results indicate that average changes in annual runoff per unit area for large areas would typically be less than 0.4%. Such changes can only be quantified by extrapolation of paired watershed studies because direct measurement is not feasible.

Huff, D.D.

1999-11-13T23:59:59.000Z

142

Lithium: Measurement of Young's Modulus and Yield Strength  

Science Conference Proceedings (OSTI)

The Lithium Collection Lens is used for anti-proton collection. In analyzing the structural behavior during operation, various material properties of lithium are often needed. properties such as density, coefficient of thermal expansion, thermal conductivity, specific heat, compressability, etc.; are well known. However, to the authors knowledge there is only one published source for Young's Modulus. This paper reviews the results from the testing of Young's Modulus and the yield strength of lithium at room temperature.

Ryan P Schultz

2002-11-07T23:59:59.000Z

143

Laboratory Measurement of Secondary Pollutant Yields from Ozone Reaction  

NLE Websites -- All DOE Office Websites (Extended Search)

Laboratory Measurement of Secondary Pollutant Yields from Ozone Reaction Laboratory Measurement of Secondary Pollutant Yields from Ozone Reaction with HVAC Filters Title Laboratory Measurement of Secondary Pollutant Yields from Ozone Reaction with HVAC Filters Publication Type Conference Proceedings Year of Publication 2009 Authors Destaillats, Hugo, Wenhao Chen, Michael G. Apte, Nuan Li, Michael Spears, Jérémie Almosni, Jianshun Zheng, and William J. Fisk Conference Name Proceedings of the Healthy Buildings 2009 Conference Conference Location Syracuse, NY Keywords building-related symptoms, hvac filter, ozone, ptr-ms, secondary pollutants Abstract We used Proton Transfer Reaction - Mass Spectrometry (PTR-MS) and conventional sampling methods to monitor and identify trace level organic pollutants formed in heterogeneous reactions between ozone and HVAC filters in real time. Experiments were carried out using a bench-scale flow tube reactor operating with dry air and humidified air (50% RH), at realistically high ozone concentrations (150 ppbv). We explored different filter media (i.e., fiberglass and cotton/polyester blends) and different particle loadings (i.e., clean filter and filters loaded with particles for 3 months at the Lawrence Berkeley National Laboratory and the Port of Oakland, CA). Detailed emission dynamics of very low levels of certain organic pollutants from filter media upon ozone exposure in the presence of moisture have been obtained and analyzed.

144

NIST Performance Management Program  

Science Conference Proceedings (OSTI)

NIST Performance Management Program. Performance ... appraisal. APMS and FWS Performance Management Programs: ...

2010-10-05T23:59:59.000Z

145

Microarchitecture parameter selection to optimize system performance under process variation  

Science Conference Proceedings (OSTI)

Design variability due to within-die and die-to-die process variations has the potential to significantly reduce the maximum operating frequency and the effective yield of high-performance microprocessors in future process technology generations. This ...

Xiaoyao Liang; David Brooks

2006-11-01T23:59:59.000Z

146

Model-independent Higgs coupling measurements at the LHC using the H{yields}ZZ{yields}4l lineshape  

SciTech Connect

We show that combining a direct measurement of the Higgs total width from the H{yields}ZZ{yields}4l lineshape with Higgs signal rate measurements allows Higgs couplings to be extracted in a model-independent way from CERN LHC data. Using existing experimental studies with 30 fb{sup -1} at one detector of the 14 TeV LHC, we show that the couplings squared of a 190 GeV Higgs to WW, ZZ, and gg can be extracted with statistical precisions of about 10%, and a 95% confidence level upper limit on an unobserved component of the Higgs decay width of about 22% of the standard model Higgs width can be set. The method can also be applied for heavier Higgs masses.

Logan, Heather E. [Carleton University, Ottawa, Ontario K1S 5B6 (Canada); Salvail, Jeff Z. [University of Ottawa, Ottawa, Ontario K1N 6N5 (Canada)

2011-10-01T23:59:59.000Z

147

The study of neutron activation yields in spallation reaction of 400 MeV/u carbon on a thick lead target  

E-Print Network (OSTI)

The spallation-neutron yield was studied experimentally by bombarding a thick lead target with 400 MeV/u carbon beam. The data were obtained with the activation analysis method using foils of Au, Mn, Al, Fe and In. The yields of produced isotopes were deduced by analyzing the measured {\\gamma} spectra of irradiated foils. According to the isotopes yields, the spatial and energy distributions of the neutron field were discussed. The experimental results were compared with Monte Carlo simulations performed by the GEANT4 + FLUKA code.

F. Ma; H. L. Ge; X. Y. Zhang; H. B. Zhang; Y. Q. Ju; L. Chen; L. Yang; F. Fu; Y. L. Zhang; J. Y. LI; T. J. Liang; B. Zhou; S. L. Wang; J. Y. Li; J. K. Xu; X. G. Leir; Z. Qin; L. Gu; G. M. Jin

2013-09-03T23:59:59.000Z

148

Observational Tests Of Intermediate Mass Star Yields Using Planetary Nebulae  

E-Print Network (OSTI)

This paper summarizes a project designed to study abundances in a sample of planetary nebulae representing a broad range in progenitor mass and metallicity. We collect abundances of C, N, and O determined for the entire sample and compare them with theoretical predictions of planetary nebula abundances from a grid of intermediate-mass star models. We find very good agreement between observations and theory, lending strong support to our current understanding of nucleosynthesis in stars with progenitor masses below 8 solar masses. This agreement between observation and theory also supports the validity of published stellar yields of C and N in the study of the abundance evolution of these two elements.

K. B. Kwitter; R. B. C. Henry

2001-01-04T23:59:59.000Z

149

Observational Tests Of Intermediate Mass Star Yields Using Planetary Nebulae  

E-Print Network (OSTI)

This paper summarizes a project designed to study abundances in a sample of planetary nebulae representing a broad range in progenitor mass and metallicity. We collect abundances of C, N, and O determined for the entire sample and compare them with theoretical predictions of planetary nebula abundances from a grid of intermediate-mass star models. We find very good agreement between observations and theory, lending strong support to our current understanding of nucleosynthesis in stars with progenitor masses below 8 solar masses. This agreement between observation and theory also supports the validity of published stellar yields of C and N in the study of the abundance evolution of these two elements.

Kwitter, K B

2001-01-01T23:59:59.000Z

150

Study on temperature dependence of BGO light yield  

E-Print Network (OSTI)

The temperature dependence of BGO coupled with photomultiplier tube R5610A-01 was studied in the range of -30{\\deg}C~30{\\deg}C. The temperature coefficient of the BGO and R5610A in whole was tested to be -1.82%. And the temperature coefficient of the gain of the R5610A is -0.44% which was tested in the same situation using a blue LED. Thus the temperature coefficient of BGO's light yield can be evaluated as -1.39%.

Peilong Wang; Yunlong Zhang; Zizong Xu; Xiaolian Wang

2013-09-29T23:59:59.000Z

151

Structures for Three Membrane Transport Proteins Yield Functional Insights  

NLE Websites -- All DOE Office Websites (Extended Search)

Structures for Three Membrane Structures for Three Membrane Transport Proteins Yield Functional Insights Structures for Three Membrane Transport Proteins Yield Functional Insights Print Wednesday, 27 January 2010 00:00 Cells depend on contact with their outside environment in order to thrive. Two examples illustrate why: In one, information needed to guide cellular processes is constantly transmitted across cell membranes by specialized proteins, and in the other, maintaining the right gradient of ions across the membrane is a process critical to the life and death of a cell. Membrane transport proteins-functioning either as channels or transporters-are the gatekeepers that control contact with the world outside the cell by catalyzing the flow of ions and molecules across cell membranes. Malfunctioning transport proteins can lead to cancer, inflammatory, and neurological diseases. Despite their importance in cell function and in a multitude of physiological processes such as sensing pain, there are still many unknowns about how they function. Recently, in an impressive series of three papers in Nature and Science, researchers at the Oregon Health and Science University delineated the structures of three transporter proteins, one of which had never before been characterized structurally in such detail. The structures were solved using ALS Beamlines 5.0.2, 8.2.1, and 8.2.2.

152

A Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator  

SciTech Connect

We present recent work on the development of a microwave ion source that will be used in a high-yield compact neutron generator for active interrogation applications. The sealed tube generator will be capable of producing high neutron yields, 5x1011 n/s for D-T and ~;;1x1010 n/s for D-D reactions, while remaining transportable. We constructed a microwave ion source (2.45 GHz) with permanent magnets to provide the magnetic field strength of 87.5 mT necessary for satisfying the electron cyclotron resonance (ECR) condition. Microwave ion sources can produce high extracted beam currents at the low gas pressures required for sealed tube operation and at lower power levels than previously used RF-driven ion sources. A 100 mA deuterium/tritium beam will be extracted through a large slit (60x6 mm2) to spread the beam power over a larger target area. This paper describes the design of the permanent-magnet microwave ion source and discusses the impact of the magnetic field design on the source performance. The required equivalent proton beam current density of 40 mA/cm2 was extracted at a moderate microwave power of 400 W with an optimized magnetic field.

Waldmann, Ole; Ludewigt, Bernhard

2010-10-11T23:59:59.000Z

153

OPERATIONAL CHALLENGES IN MIXING AND TRANSFER OF HIGH YIELD STRESS SLUDGE WASTE  

SciTech Connect

The ability to mobilize and transport non-Newtonian waste is essential to advance the closure of highly radioactive storage tanks. Recent waste removal operations from Tank 12H at the Savannah River Site (SRS) encountered sludge mixtures with a yield stress too high to pump. The waste removal equipment for Tank 12H was designed to mobilize and transport a diluted slurry mixture through an underground 550m long (1800 ft) 0.075m diameter (3 inch) pipeline. The transfer pump was positioned in a well casing submerged in the sludge slurry. The design allowed for mobilized sludge to enter the pump suction while keeping out larger tank debris. Data from a similar tank with known rheological properties were used to size the equipment. However, after installation and startup, field data from Tank 12H confirmed the yield stress of the slurry to exceed 40 Pa, whereas the system is designed for 10 Pa. A revision to the removal strategy was required, which involved metered dilution, blending, and mixing to ensure effective and safe transfer performance. The strategy resulted in the removal of over 255,000 kgs of insoluble solids with four discrete transfer evolutions for a total transfer volume of 2400 m{sup 3} (634,000 gallons) of sludge slurry.

Caldwell, T.; Bhatt, P.

2009-12-07T23:59:59.000Z

154

Collaboration yields 'The Right Glasses' for observing mystery behavior  

NLE Websites -- All DOE Office Websites (Extended Search)

Observing mystery behavior In electrons Observing mystery behavior In electrons Collaboration yields 'The Right Glasses' for observing mystery behavior in electrons The research may lead to a better understanding of superconductors or development of better materials for powering high-speed electronics. December 13, 2007 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy

155

Laser fusion experiment yields record energy at Lawrence Livermore's  

NLE Websites -- All DOE Office Websites (Extended Search)

4 4 For immediate release: 08/26/2013 | NR-13-08-04 High Resolution Image All NIF experiments are controlled and orchestrated by the integrated computer control system in the facility's control room. It consists of 950 front-end processors attached to about 60,000 control points, including mirrors, lenses, motors, sensors, cameras, amplifiers, capacitors and diagnostic instruments. Laser fusion experiment yields record energy at Lawrence Livermore's National Ignition Facility Breanna Bishop, LLNL, (925) 423-9802, bishop33@llnl.gov High Resolution Image The preamplifiers of the National Ignition Facility are the first step in increasing the energy of laser beams as they make their way toward the target chamber. LIVERMORE, Calif. -- In the early morning hours of Aug.13, Lawrence

156

Metallic Glass Yields Secrets under Pressure | Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

Structure of the "Swine Flu" Virus Structure of the "Swine Flu" Virus The Package Matters Disarming Deadly South American Hemorrhagic Fever Viruses Pull-Chain "Polymer" Solves Puzzle of Complex Molecular Packing Discovering New Talents for Diamond Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Metallic Glass Yields Secrets under Pressure MARCH 29, 2010 Bookmark and Share Diamond anvil cell used for high-pressure experiments Metallic glasses are emerging as potentially useful materials at the frontier of materials science research. They combine the advantages-and avoid many of the problems of-normal metals and glasses, two classes of materials with a very wide range of applications. For example, metallic

157

JASON Project Collaboration Yields 3 CODiE Awards  

NLE Websites -- All DOE Office Websites (Extended Search)

0, Issue 19 0, Issue 19 the lab JASON Project Collaboration Yields 3 CODiE Awards page 2 NETL Celebrates 100 Years of Research Excellence page 3 NETL and Regional University Alliance Team Develop New Materials and Non-Destructive Evaluation Techniques page 9 netlog is a quarterly newsletter, which highlights recent achievements and ongoing research at NETL. Any comments or suggestions, please contact Paula Turner at paula.turner@netl.doe.gov or call 541-967-5966. Argonaut Jaclyn Martin helps Larry Shadle (far left) load polyethylene beads into the feed hopper of the cold flow simulator as fellow Argonauts Tim West (center left) and Hiyam Añorve Garza (center right) and teacher Melissa Hall (far right) watch. The students learned

158

Method and apparatus for sampling low-yield wells  

DOE Patents (OSTI)

An apparatus and method for collecting a sample from a low-yield well or perched aquifer includes a pump and a controller responsive to water level sensors for filling a sample reservoir. The controller activates the pump to fill the reservoir when the water level in the well reaches a high level as indicated by the sensor. The controller deactivates the pump when the water level reaches a lower level as indicated by the sensors. The pump continuously activates and deactivates the pump until the sample reservoir is filled with a desired volume, as indicated by a reservoir sensor. At the beginning of each activation cycle, the controller optionally can select to purge an initial quantity of water prior to filling the sample reservoir. The reservoir can be substantially devoid of air and the pump is a low volumetric flow rate pump. Both the pump and the reservoir can be located either inside or outside the well.

Last, George V. (Richland, WA); Lanigan, David C. (Kennewick, WA)

2003-04-15T23:59:59.000Z

159

Microscopic description of Cf-252 cold fission yields  

E-Print Network (OSTI)

We investigate the cold fission of 252Cf within the two center shell model to compute the potential energy surface. The fission yields are estimated by using the semiclassical penetration approach. It turns out that the inner cold valley of the total potential energy is strongly connected with Z=50 magic number. The agreement with experimental values is very much improved only by considering mass and charge asymmetry degrees of freedom. Thus, indeed cold fission of 252Cf is a Sn-like radioactivity, related the other two "magic radioactivities", namely alpha-decay and heavy-cluster decay, called also Pb-like radioactivity. This calculation provides the necessary theoretical confidence to estimate the penetration cross section in producing superheavy nuclei, by using the inverse fusion process.

Mirea, M; Sandulescu, A

2009-01-01T23:59:59.000Z

160

Microscopic description of Cf-252 cold fission yields  

E-Print Network (OSTI)

We investigate the cold fission of 252Cf within the two center shell model to compute the potential energy surface. The fission yields are estimated by using the semiclassical penetration approach. It turns out that the inner cold valley of the total potential energy is strongly connected with Z=50 magic number. The agreement with experimental values is very much improved only by considering mass and charge asymmetry degrees of freedom. Thus, indeed cold fission of 252Cf is a Sn-like radioactivity, related the other two "magic radioactivities", namely alpha-decay and heavy-cluster decay, called also Pb-like radioactivity. This calculation provides the necessary theoretical confidence to estimate the penetration cross section in producing superheavy nuclei, by using the inverse fusion process.

M. Mirea; D. S. Delion; A. Sandulescu

2009-07-20T23:59:59.000Z

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


161

Direct calibration of the yield of nuclear explosion  

SciTech Connect

The determination of the power of underground nuclear explosions (UNE) is of great significance. The seismic method of UNE yield determination allows monitoring at large distances, but is less precise than local monitoring methods. A way is proposed to calibrate UNE based on the idea of the vibroseis method in which powerful vibrators are used to produce seismic waves in the UNE epicenter; UNE calibration is carried out by comparison of the vibroseis record with a UNE seismogram. Results of preliminary work on the problem are presented. It is based on experience with vibrosounding of the Earth as well as earthquakes and chemical and nuclear explosions wave field structure studies. It is concluded that UNE calibration with the aid of seismic vibrators is both possible and expedient.

Nakanishi, K.; Nikolayev, A. [SYNAPSE Science Center/Moscow IRIS Data Analysis Center, Moscow (Russian Federation)

1994-06-01T23:59:59.000Z

162

Timescales in creep and yielding of attractive gels  

E-Print Network (OSTI)

The stress-induced yielding scenario of colloidal gels is investigated under rough boundary conditions by means of rheometry coupled to local velocity measurements. Under an applied shear stress, the fluidization of gels made of attractive carbon black particles suspended in a mineral oil is shown to involve a previously unreported shear rate response $\\dot \\gamma (t)$ characterized by two well-defined and separated timescales $\\tau_c$ and $\\tau_f$. First $\\dot \\gamma(t)$ decreases as a weak power law strongly reminiscent of the primary creep observed in numerous crystalline and amorphous solids, coined the "Andrade creep." We show that the bulk deformation remains homogeneous at the micron scale, which demonstrates that if plastic events take place or if any shear transformation zone exists, such phenomena occur at a smaller scale. As a key result of this paper, the duration $\\tau_c$ of this creep regime decreases as a power law of the viscous stress, defined as the difference between the applied stress and the yield stress with an exponent ranging between 2 and 3 depending on the gel concentration. The end of this first regime is marked by a jump of the shear rate by several orders of magnitude, while the gel slowly slides as a solid block experiencing strong wall slip at both walls, despite rough boundary conditions. Finally, a second sudden increase of the shear rate is concomitant to the full fluidization of the material which ends up being homogeneously sheared. The corresponding fluidization time $\\tau_f$ robustly follows an exponential decay with the applied shear stress as already reported for smooth boundary conditions. Finally, we highlight a few features that are common to attractive colloidal gels and to solid materials by discussing our results in the framework of theoretical approaches of solid rupture (kinetic, fiber bundle, and transient network models).

Vincent Grenard; Thibaut Divoux; Nicolas Taberlet; Sébastien Manneville

2013-10-01T23:59:59.000Z

163

Extractability, plant yield and toxicity thresholds for boron in compost  

Science Conference Proceedings (OSTI)

Boron (B) is a trace element essential to crop growth in small soil concentrations (0.2-1.5ppm), yet may produce plant toxicity symptoms readily as the amount in the soil solution increases over 2ppm. Our study examined commercial compost made with coal fly-ash used to prepare growing media for cultivars of varying sensitivity (corn, beans, cucumber, peas). We examined total vs. extractable boron content and relate final visual symptoms of B-toxicity to yields and tissue concentrations. Visual toxicity effects included tip burn (corn), leaf mottling and necrosis (beans and peas) and leaf mottling and cupping (cucumbers). Fly ash added to compost increased hot-water soluble (HWS) B in proportion to rate and in dependence on pH, with 30% and 10% of total-B expressed as HWS-B at a media pH of 6 and 7.5, respectively. Biomass for bean and cucumber was significantly reduced by 45 to 55%, respectively, by addition of 33% fly-ash compost to growing media (28ppm total-B) while plant tissue-B increased by 6- to 4-fold, respectively. Economic yield depressions in compost media are evident for all crops and appeared at levels of HWS-B in compost media exceeding 5 ppm. The study underscores the need for careful management of exogenous factors that may be present in composts and suggests detailed understanding of media-pH and cultivar preferences may be required in preparation of growing media in order to reduce potential negative growth effects.

Brinton, W.F.; Evans, E.; Blewett, C. [Woods End Labs Inc., Mt. Vernon, ME (United States)

2008-04-01T23:59:59.000Z

164

Timescales in creep and yielding of attractive gels  

E-Print Network (OSTI)

The stress-induced yielding scenario of colloidal gels is investigated under rough boundary conditions by means of rheometry coupled to local velocity measurements. Under an applied shear stress, the fluidization of gels made of attractive carbon black particles suspended in a mineral oil is shown to involve a previously unreported shear rate response $\\gp(t)$ characterized by two well-defined and separated timescales $\\tau_c$ and $\\tau_f$. First $\\gp(t)$ decreases as a weak power law strongly reminiscent of the primary creep observed in numerous crystalline and amorphous solids, coined the "Andrade creep." We show that the bulk deformation remains homogeneous at the micron scale, which demonstrates that if plastic events take place or if any shear transformation zone exists, such phenomena occur at a smaller scale. As a key result of this paper, the duration $\\tau_c$ of this creep regime decreases as a power law of the viscous stress, defined as the difference between the applied stress and the yield stress with an exponent ranging between 2 and 3 depending on the gel concentration. The end of this first regime is marked by a jump of the shear rate by several orders of magnitude, while the gel slowly slides as a solid block experiencing strong wall slip at both walls, despite rough boundary conditions. Finally, a second sudden increase of the shear rate is concomitant to the full fluidization of the material which ends up being homogeneously sheared. The corresponding fluidization time $\\tau_f$ robustly follows an exponential decay with the applied shear stress as already reported for smooth boundary conditions. Finally, we highlight a few features that are common to attractive colloidal gels and to solid materials by discussing our results in the framework of theoretical approaches of solid rupture (kinetic, fiber bundle, and transient network models).

Vincent Grenard; Thibaut Divoux; Nicolas Taberlet; Sébastien Manneville

2013-10-01T23:59:59.000Z

165

Characterization of a Be(p,xn) neutron source for fission yields measurements  

E-Print Network (OSTI)

We report on measurements performed at The Svedberg Laboratory (TSL) to characterize a proton-neutron converter for independent fission yield studies at the IGISOL-JYFLTRAP facility (Jyv\\"askyl\\"a, Finland). A 30 MeV proton beam impinged on a 5 mm water-cooled Beryllium target. Two independent experimental techniques have been used to measure the neutron spectrum: a Time of Flight (TOF) system used to estimate the high-energy contribution, and a Bonner Sphere Spectrometer able to provide precise results from thermal energies up to 20 MeV. An overlap between the energy regions covered by the two systems will permit a cross-check of the results from the different techniques. In this paper, the measurement and analysis techniques will be presented together with some preliminary results.

A. Mattera; P. Andersson; A. Hjalmarsson; M. Lantz; S. Pomp; V. Rakopoulos; A. Solders; J. Valldor-Blücher; D. Gorelov; H. Penttilä; S. Rinta-Antila; A. V. Prokofiev; E. Passoth; R. Bedogni; A. Gentile; D. Bortot; A. Esposito; M. V. Introini; A. Pola

2013-04-02T23:59:59.000Z

166

MEASUREMENT OF THE SECONDARY EMISSION YIELD OF A THIN DIAMOND WINDOW IN TRANSMISSION MODE.  

DOE Green Energy (OSTI)

The secondary emission enhanced photoinjector (SEEP) is a promising new approach to the generation of high-current, high-brightness electron beams. A low current primary electron beam with energy of a few thousand electron-volts strikes a specially prepared diamond window which emits secondary electrons with a current two orders of magnitude higher. The secondary electrons are created at the back side of the diamond and drift through the window under the influence of a strong electrical field. A hydrogen termination at the exit surface of the window creates a negative electron affinity (NEA) which allows the electrons to leave the diamond. An experiment was performed to measure the secondary electron yield and other properties. The results are discussed in this paper.

CHANG, X.; RAO, T.; SMEDLEY, J.; ET AL.

2005-05-16T23:59:59.000Z

167

High Performance Computing  

Science Conference Proceedings (OSTI)

High Performance Computing. Summary: High Performance Computing (HPC) enables work on challenging problems that ...

2012-03-05T23:59:59.000Z

168

INCREASING YIELDS AND BROADENING MARKETS: PROCESS INNOVATIONS IN THE MANUFACTURING OF ENERGY-SAVING WINDOW GLAZINGS  

Science Conference Proceedings (OSTI)

The goal of this project was to develop and implement advanced thin film process technology which would significantly improve the manufacturability of both static and dynamic high performance energy saving coatings for windows. The work done has been aimed at improvements to the process that will result in increases in yield, and this was divided into four main areas, dealing with improvements in substrate preparation methods, reductions in the incidence of problems caused by particulate contamination, use of in-situ optical monitoring to improve process control, and overall system integration to enable simplified, and therefore lower cost operation. Significant progress has been made in each of the areas. In the area of substrate preparation, the enhanced washing techniques which have been developed, in combination with a new inspection technique, have resulted in significant reductions in the number of EC devices which are rejected because of substrate problems. Microscopic inspection of different defects in electrochromic devices showed that many were centered on particles. As a result, process improvements aimed at reducing the incidence of particles throughout the entire process have been implemented. As a result, the average number of defects occurring per unit area has been significantly reduced over the period of this project. The in-situ monitoring techniques developed during this project have become an indispensable part of the processing for EC devices. The deposition of several key layers is controlled as a result of in-situ monitoring, and this has facilitated significant improvements in uniformity and repeatability. Overall system integration has progressed to the stage where the goal of a closed-loop monitoring and control system in within reach, and it is anticipated that this will be achieved during the scale-up phase. There has been a clear increase in the yield occurring over the period of this project (Sept 1999 to September 2003), which is attributable to a range of process improvements implemented as a result of this work. It is anticipated that the yield will increase further as a result of these ongoing programs. The manufacturability of these advanced glazing systems has also been significantly improved, by a variety of different measures such as in-situ monitoring, system integration, and measurements taken to reduce the incidence of defects caused by contamination. It is therefore anticipated that the transfer of this performance to the new coating equipment to be introduced during scale-up to the first manufacturing plant will be reasonably straightforward.

Mark Burdis; Neil Sbar

2005-04-01T23:59:59.000Z

169

Corn Yield Behavior: Effects of Technological Advance and Weather-Conditions  

Science Conference Proceedings (OSTI)

This study explores the relationships between U.S. corn yields (level and stability), advances in technology, and weather. Evaluations at the farm, sub-state, and national levels reveal no evidence of yield plateaus, and absolute, but not ...

Philip Garcia; Susan E. Offutt; Musa Pinar; Stanley A. Changnon

1987-09-01T23:59:59.000Z

170

Prediction of County-Level Corn Yields Using an Energy-Crop Growth Index  

Science Conference Proceedings (OSTI)

Weather conditions significantly affect corn yields. while weather remains as the major uncontrolled variable in crop production, an understanding of the influence of weather on yields can aid in early and accurate assessment of the impact of ...

Jeffrey A. Andresen; Robert F. Dale; Jerald J. Fletcher; Paul V. Preckel

1989-01-01T23:59:59.000Z

171

An Iterative Regression Model for Estimating Soybean Yields from Environmental Data  

Science Conference Proceedings (OSTI)

A model was developed for using weather data, to estimate the yields of soybeans for varieties adapted to the central United States. The model utilized an iterative regression analysis for relating soybean yields to environmental variables. This ...

Andres C. Ravelo; Wayne L. Decker

1981-11-01T23:59:59.000Z

172

Using the Southern Oscillation to Forecast Texas Winter Wheat and Sorghum Crop Yields  

Science Conference Proceedings (OSTI)

Time series models are used to examine the impact of Southern Oscillation (SO) extreme events in estimating and forecasting Texas sorghum and winter wheat yields. It is shown that a significant correlation between the SO events and yield does not ...

James W. Mjelde; Keith Keplinger

1998-01-01T23:59:59.000Z

173

Considerations of Meteorological Time Series in Estimating Regional-Scale Crop Yield  

Science Conference Proceedings (OSTI)

The sensitivity of simulated soybean yield to spatial averaging of meteorological data was analyzed for the central United States during a 23-year period. Regional yield was simulated using the physiological model, SOYGRO, in two sets of ...

Gregory J. Carbone

1993-08-01T23:59:59.000Z

174

Associations between Grain Crop Yields in Central-Eastern Argentina and El Niño–Southern Oscillation  

Science Conference Proceedings (OSTI)

Associations are investigated between yields of major crops in the Argentine Pampas (central-eastern Argentina) and El Niño–Southern Oscillation (ENSO) phase. For maize and sorghum, higher (lower) yield anomalies occur more frequently than ...

Guillermo P. Podestá; Carlos D. Messina; Martín O. Grondona; Graciela O. Magrin

1999-10-01T23:59:59.000Z

175

Regional Climate Variability Impacts on the Annual Grape Yield in Mendoza, Argentina  

Science Conference Proceedings (OSTI)

Mendoza Province is the major Argentinian vitivinicultural region, and its grape production is fundamental for the national vintage. The 1979–2009 climate–annual grape yield relationships are analyzed, and total grape yield is shown to depend ...

Eduardo Agosta; Pablo Canziani; Martín Cavagnaro

2012-06-01T23:59:59.000Z

176

Trends in the Sediment Yield of the Sacramento River, California, 1957 - 2001  

E-Print Network (OSTI)

416–426. Donoghue JF. 1990. Trends in Chesapeake Bay sedi-of the Environment SCIENCE Trends in the Sediment Yield ofbe contributing to the trend in sediment yield, including

Wright, Scott A; Schoellhamer, David H

2004-01-01T23:59:59.000Z

177

FISSION YIELDS AND LIFETIMES FOR MUON INDUCED FISSION IN 235U AND 238U  

E-Print Network (OSTI)

University of California. FISSION YIELDS AL\\JD LIFETIMES FORfor his assistance in the fission chamber calibrations andCl8 (1978) 1452. Table 1 Fission yields yf Nucleus 23su 23Su

Ahmad, S.

2012-01-01T23:59:59.000Z

178

The Start Of Ebullition In Quiescent, Yield-Stress Fluids  

SciTech Connect

Non-Newtonian rheology is typical for the high-level radioactive waste (HLW) slurries processed in the Hanford Tank Waste Treatment and Immobilization Plant (WTP). Hydrogen and other flammable gases are generated in the aqueous phase by radiolytic and chemical reactions. HLW slurries have a capacity for retaining gas characterized by the shear strength holding the bubbles still. The sizes and degassing characteristics of flammable gas bubbles in the HLW slurries expected to be processed by the WTP are important considerations for designing equipment and operating procedures. Slurries become increasingly susceptible to degassing as the bubble concentration increases. This susceptibility and the process of ebullitive bubble enlargement are described here. When disturbed, the fluid undergoes localized flow around neighboring bubbles which are dragged together and coalesce, producing an enlarged bubble. For the conditions considered in this work, bubble size increase is enough to displace the weight required to overcome the fluid shear strength and yield the surroundings. The buoyant bubble ascends and accumulates others within a zone of influence, enlarging by a few orders of magnitude. This process describes how the first bubbles appear on the surface of a 7 Pa shear strength fluid a few seconds after being jarred.

Reed, G. R.; Sherwood, David J.; Saez, A. Eduardo

2012-08-30T23:59:59.000Z

179

Kent SeaTech Increases Fish Farm Yield and Recycles Water ...  

Science Conference Proceedings (OSTI)

Kent SeaTech Increases Fish Farm Yield and Recycles Water for Neighboring Agricultural Irrigation. Partnering Organization ...

2011-10-19T23:59:59.000Z

180

Inertial Confinement Fusion Ignition and High Yield Campaign  

E-Print Network (OSTI)

November 21, 2003 #12;2 Statements to FESAC IFE panel 10/28/03 · Ignition is a major goal for NNSA supports OFES's mission and OFES use of NNSA's ICF facilities is accepted · Defense Programs reserves right: Provide mission need report for the proposed OMEGA Extended Performance project. · October 2002: NNSA

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


181

What Is Well Yield? Private wells are frequently drilled in rural areas to  

E-Print Network (OSTI)

1 What Is Well Yield? Private wells are frequently drilled in rural areas to supply water to individual homes or farms. The maximum rate in gallons per minute (GPM) that a well can be pumped without lowering the water level in the borehole below the pump intake is called the well yield. Low-yielding wells

Keinan, Alon

182

Operation redwing: Report to the scientific director, fireball yields, August 17, 1959 (sanitized version)  

SciTech Connect

The yields for the Los Alamos Scientific Laboratory shots of Operation Redwing have been calculated from fireball diameter-time data using several related methods. The yield numbers obtained from these calculations are presented and a yield is recommended for each shot.

NONE

1996-10-29T23:59:59.000Z

183

Application of fuzzy cognitive maps for cotton yield management in precision farming  

Science Conference Proceedings (OSTI)

The management of cotton yield behavior in agricultural areas is a very important task because it influences and specifies the cotton yield production. An efficient knowledge-based approach utilizing the method of fuzzy cognitive maps (FCMs) for characterizing ... Keywords: Cotton, Decision making, Expert knowledge, Fuzzy cognitive maps, Learning algorithm, Modeling, Soil, Unsupervised learning, Yield

Elpiniki I. Papageorgiou; Athanasios Markinos; Theofanis Gemptos

2009-12-01T23:59:59.000Z

184

NEANDC specialists meeting on yields and decay data of fission product nuclides  

SciTech Connect

Separate abstracts were prepared for the 29 papers presented. Workshop reports on decay heat, fission yields, beta- and gamma-ray spectroscopy, and delayed neutrons are included. An appendix contains a survey of the most recent compilations and evaluations containing fission product yield, fission product decay data, and delayed neutron yield information. (WHK)

Chrien, R.E.; Burrows, T.W. (eds.)

1983-01-01T23:59:59.000Z

185

Performance limits of heliostat fields  

SciTech Connect

Geometric and thermodynamic arguments are used to derive upper limits on the performance of a solar energy collection system, consisting of an axisymmetric heliostat field, a solar tower, secondary optics and a black receiver. Performance limits on collected power, concentration, and work output are presented. Performance of tower systems with several secondary optics options is compared: tower-top Compound Parabolic Concentrator (CPC), Tailored Edge-Ray Concentrator (TERC) approximated by a cone, and Cassegrainian with ground-level CPC or Compound Elliptic Concentrator (CEC). Optimized ray tracing is used to generate the design parameters of the secondary concentrators that yield the highest optical efficiency. The results show that the tower-top Cone provides the best performance regarding both concentration and efficiency, except for very large fields. The Cassegrainian designs come in second, but become equal and even better than the Cone for large fields. The results for the Cassegrainian are sensitive to the value of the reflectivity, due to the additional reflections incurred. The choice of a CEC is better than a CPC for the terminal concentration in a Cassegrainian system, but the difference is small. The suitability of the different design options for high-temperature solar applications is discussed. The recommendations regarding optical configuration depend on field size, as well as on application-specific constraints.

Kribus, A.; Krupkin, V.; Yogev, A. [Weizmann Inst. of Science, Rehovot (Israel). Environmental Sciences and Energy Research Dept.; Spirkl, W. [Ludwig-Maximilians-Univ. Muenchen (Germany). Sektion Physik

1998-11-01T23:59:59.000Z

186

Performance and Optimization  

NLE Websites -- All DOE Office Websites (Extended Search)

1-800-66-NERSC, option 3 or 510-486-8611 Home For Users Computational Systems Edison Performance and Optimization Performance and Optimization Note: all the performance...

187

High Performance Computing  

NLE Websites -- All DOE Office Websites (Extended Search)

Information Science, Computing, Applied Math High Performance Computing High Performance Computing Providing world-class high performance computing capability that enables...

188

Performance of the Sendai Microgrid During the 2011 Earthquake and Tsunami  

NLE Websites -- All DOE Office Websites (Extended Search)

Performance of the Sendai Microgrid During the 2011 Earthquake and Tsunami Performance of the Sendai Microgrid During the 2011 Earthquake and Tsunami Speaker(s): Keiichi Hirose Date: March 23, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Chris Marnay This seminar provides an overview of the Sendai Microgrid, and outlines its behavior during the earthquake and its aftermath. On March 11, 2011, an earthquake of unprecedented violence occurred in the Tohoku region, along Japan's Pacific Coast. The extremely intense vibrations severely damaged electric utility facilities, and the subsequent tsunami washed away many coastal towns and villages. The Sendai Microgrid at Tohoku Fukushi University, located northwest of downtown Sendai, had been built and demonstrated over the four years beginning in 2005. The Microgrid was

189

The MicroGrid: Using Online Simulation to Predict Application Performance in Diverse Grid Network Environments  

E-Print Network (OSTI)

Improvements in networking and middleware technology are enabling large-scale grids that aggregate resources over wide-area networks to support applications at unprecedented levels of scale and performance. Unfortunately, existing middleware and tools provide little information to users as to the suitability of a given grid topology for a specific grid application. Instead, users generally use ad-hoc performance models to evaluate mappings of their applications to resource and network topologies. Grid application behavior alone is complex, and adding resource and network behavior makes the situation even worse. As a result, users typically employ nearly blind experimentation to find good deployments of their applications in each new grid environment. Only through actual deployment and execution can a user discovers if the mapping was a good one. Further, even after finding a good configuration, there is no basis to determine if a much better configuration has been missed. This approach slows effective grid application development and deployment.

Huaxia Xia; Holly Dail; Henri Casanova; Andrew A. Chien

1999-01-01T23:59:59.000Z

190

Investigation of a Novel Solar Assisted Water Heating System with Enhanced Energy Yield for Buildings  

E-Print Network (OSTI)

This paper presented the concept, prototype application, operational performance and benefits relating to a novel solar assisted water heating system for building services. It was undertaken through dedicated theoretical analysis, computer simulation and experimental verification. The unique characteristic of such system consists in the integrated loop heat pipe and heat pump unit (LHP-HP), which was proposed to improve solar photovoltaic (PV) generation, capture additional solar heat, and therefore enhance overall solar energy yield. The evaluation approaches derived from the first-law thermodynamics and the standard/hybrid system performance coefficients (COP/COPPV/T) were developed for the comprehensive assessments. Under the featured weather conditions, the mean electrical, thermal and overall energetic efficiencies of the module were tested around 9.12%, 38.13% and 47.25% respectively. Whilst the COP and COPPV/T values of entire system were measured at about 5.51 and 8.81 averagely. Moreover, a general comparison of this prototype system against the conventional solar/air energy systems was simply discussed.

Zhang, X.; Zhao, X.; Xu, J.; Yu, X.

2012-01-01T23:59:59.000Z

191

Performance Management Methodology Moving from Performance Measurement to Performance Management  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Guide to a Balanced Scorecard: Guide to a Balanced Scorecard: Performance Management Methodology Moving from Performance Measurement to Performance Management Guide to a Balanced Scorecard Performance Management Methodology Richard H. Hopf Deputy Assistant Secretary for Procurement and Assistance Management Department of Energy Lloyd W. Pratsch Procurement Executive Department of State Robert A. Welch Director for Acquisition Management and Procurement Executive Department of Commerce Pauk A. Denett Director of Administration/Senior Procurement Executive Department of Interior David J. Litman Director, Office of Acquisition and Grants Management Department of Transportation Ida M. Ustad Deputy Associate Administrator for Acquisition Policy General Services Administration Terrence J. Tychan Deputy Assistant Secretary for Grants

192

Special Report on the "Department of Energy's Efforts to Meet Accountability and Performance Reporting Objectives of the American Recovery and Reinvestment Act"  

Science Conference Proceedings (OSTI)

The purpose of the American Recovery and Reinvestment Act of 2009 (Recovery Act) was to jumpstart the U.S. economy, create or save millions of jobs, spur technological advances in health and science, and invest in the Nation's energy future. The Department of Energy will receive an unprecedented $38 billion in Recovery Act funding to support a variety of science, energy, and environmental initiatives. The Recovery Act requires transparency and accountability over these funds. To this end, the Office of Management and Budget (OMB) issued guidance requiring the Department to compile and report a wide variety of funding, accounting, and performance information. The Department plans to leverage existing information systems to develop accounting and performance information that will be used by program managers and ultimately reported to Recovery.gov, the government-wide source of Recovery Act information, and to OMB. The Department's iManage iPortal, a system that aggregates information from a number of corporate systems, will serve as the main reporting gateway for accounting information. In addition, the Department plans to implement a methodology or system that will permit it to monitor information reported directly to OMB by prime funding recipients. Furthermore, performance measures or metrics that outline expected outcomes are being developed, with results ultimately to be reported in a recently developed Department-wide system. Because of the significance of funds provided and their importance to strengthening the Nation's economy, we initiated this review to determine whether the Department had taken the steps necessary to ensure that Recovery Act funds can be appropriately tracked and are transparent to the public, and whether the benefits of the expenditures can be properly measured and reported clearly, accurately, and in a timely manner. Although not yet fully mature, we found that the Department's efforts to develop, refine, and apply the control structure needed to ensure accurate, timely, and reliable reporting to be both proactive and positive. We did, however, identify certain issues relating to Recovery Act performance management, accounting and reporting accuracy, and timeliness that should be addressed and resolved. In particular, at the time of our review: (1) Program officials had not yet determined whether existing information systems will be able to process anticipated transaction increases associated with the Recovery Act; (2) System modifications made to the Department's performance management system to accommodate Recovery Act performance measures had not yet been fully tested and verified; (3) The ability of prime and sub-recipients to properly segregate and report both accounting and performance information had not been determined; (4) There was a lack of coordination between Headquarters organizations related to aspects of Recovery Act reporting. For example, we observed that the Offices of Fossil Energy and Program, Analysis and Evaluation were both involved in developing job creation estimates that could yield significantly different results; and, (5) A significant portion (91 of 142, or 64 percent) of the performance measures developed for the Recovery Act activities were not quantifiable. In some instances, Project Operating Plans had not been finalized and we were not able to verify that all needed performance measures had been developed. Furthermore, the Department had not developed specific metrics to measure federal and contractor jobs creation and retention, an essential Recovery Act objective. The Department had devoted a great deal of time and resources to identifying and mitigating Recovery Act-related risks. For example, the Department developed a risk assessment tool that is intended to assist programs in identifying risks that can prevent its Recovery Act projects from meeting their intended goals. We also found that program staff and management officials at multiple levels were actively engaged in designing Recovery Act-related control and accountability programs. These efforts ra

None

2009-09-01T23:59:59.000Z

193

The performance analysis of linux networking - packet receiving  

Science Conference Proceedings (OSTI)

The computing models for High-Energy Physics experiments are becoming ever more globally distributed and grid-based, both for technical reasons (e.g., to place computational and data resources near each other and the demand) and for strategic reasons (e.g., to leverage equipment investments). To support such computing models, the network and end systems, computing and storage, face unprecedented challenges. One of the biggest challenges is to transfer scientific data sets--now in the multi-petabyte (10{sup 15} bytes) range and expected to grow to exabytes within a decade--reliably and efficiently among facilities and computation centers scattered around the world. Both the network and end systems should be able to provide the capabilities to support high bandwidth, sustained, end-to-end data transmission. Recent trends in technology are showing that although the raw transmission speeds used in networks are increasing rapidly, the rate of advancement of microprocessor technology has slowed down. Therefore, network protocol-processing overheads have risen sharply in comparison with the time spent in packet transmission, resulting in degraded throughput for networked applications. More and more, it is the network end system, instead of the network, that is responsible for degraded performance of network applications. In this paper, the Linux system's packet receive process is studied from NIC to application. We develop a mathematical model to characterize the Linux packet receiving process. Key factors that affect Linux systems network performance are analyzed.

Wu, Wenji; Crawford, Matt; Bowden, Mark; /Fermilab

2006-11-01T23:59:59.000Z

194

Experimental and analytical studies of hydrocarbon yields under dry-, steam-, and steam with propane-distillation  

E-Print Network (OSTI)

Recent experimental and simulation studies -conducted at the Department of Petroleum Engineering at Texas A&M University - confirm oil production is accelerated when propane is used as an additive during steam injection. To better understand this phenomenon, distillation experiments were performed using seven-component synthetic oil consisting of equal weights of the following alkanes: n-C5, n-C6, n-C7, n-C8, n-C9, nC10, and n-C15. For comparison purposes, three distillation processes were investigated: dry-, steam-, and steam-propane-distillation, the latter at a propane:steam mass ratio of 0.05. The injection rate of nitrogen during dry-and steam-distillation was the same as that of propane during steam-propane distillation, 0.025 g/min, with steam injection rate kept at 0.5 g/min. The distillation temperatures ranged from 115°C to 300°C and were increased in steps of 10°C. The cell was kept at each temperature plateau (cut) for 30 minutes. Distillation pressures ranged from 0 psig for dry distillation to 998 psig for steam-and steam-propane distillation. The temperature-pressure combination used represented 15°C superheated steam conditions. Distillate samples were collected at each cut, and the volume and weight of water and hydrocarbon measured. In addition, the composition of the hydrocarbon distillate was measured using a gas chromatograph. Main results of the study may be summarized as follows. First, the hydrocarbon yield at 125°C is highest with steam-propane distillation (74 wt%) compared to steam distillation (58 wt%), and lowest with dry distillation (36 wt%). This explains in part the oil production acceleration observed in steam-propane displacement experiments. Second, the final hydrocarbon yield at 300°C however is the same for the three distillation processes. This observation is in line with the fact that oil recoveries were very similar in steam- and steam-propane displacement experiments. Third, based on the yields of individual hydrocarbon components, steam-propane distillation lowers the apparent boiling points of the hydrocarbons significantly. This phenomenon may be the most fundamental effect of propane on hydrocarbon distillation, which results in a higher yield during steam-propane distillation and oil production acceleration during steam-propane displacement. Fourth, experimental K-values are higher in distillations with steam-propane for the components n-hexane, n-heptane, n-octane, and n-nonane. Fifth, vapor fugacity coefficients for each component are higher in distillations with steam-propane than with steam. Finally, Gibbs excess energy is overall lower in distillations with steam-propane than with steam. The experimental results clearly indicate the importance of distillation on oil recovery during steam-or steam-propane injection. The experimental procedure and method of analysis developed in this study (for synthetic oil) will be beneficial to future researchers in understanding the effect of propane as steam additive on actual crude oils.

Ramirez Garnica, Marco Antonio

2003-05-01T23:59:59.000Z

195

Dry Versus Wet Aging of Beef: Retail Cutting Yields and Palatability Evaluations of Steaks Using Alternative Cutting Styles  

E-Print Network (OSTI)

Boneless ribeye rolls (n = 12) and boneless top sirloin butts (n = 12) were obtained from heavy weight carcasses (mean = 407.8 kg), assigned to one of two aging treatments (dry or wet) and aged for 35 days at a commercial aging facility. Cutting tests were performed at the end of the aging period to determine retail yields. Subprimals were fabricated using the Beef Alternative Merchandising cutting styles, isolating four specific muscles: M. spinalis thoracis, M. longissimus thoracis, M. gluteobiceps, and M. gluteus medius. Retail cutting tests showed wet-aged subprimals had higher (P < 0.0001) total saleable yield percentages with decreased cooler shrink and gross cut loss percentages. This resulted in wet-aged ribeye rolls and top sirloin butts yielding 1.5 times and 1.3 times more saleable product than dry-aged counterparts, respectively. In order to determine palatability characteristics, consumer sensory evaluations and trained panel evaluations were preformed. Palatability related to aging and muscle type resulted in significant differences. From a consumer standpoint, aging treatment influenced OLIKE, FLAV, FLEVEL, and BEEFLIKE but only through the interaction of aging treatment x muscle. Clearly, consumers rated the wet-aged, M. spinalis thoracis highest in each of the previously stated attributes. Aging also affected JUIC, whereas muscle type had a significant (P < 0.0001) effect on FLVBF, TEND, LEVTEND, JUIC, and LEVJUIC. As far as trained sensory attributes were concerned, a more concrete flavor profile of aged beef was obtained. In addition, dry-aged steaks had greater (P < 0.0001) cooking yield percentages when compared to wet-aged steaks.

Smith, Amanda 1987-

2012-12-01T23:59:59.000Z

196

Lepton flavor violating Higgs bosons and {tau}{yields}{mu}{gamma}  

SciTech Connect

We update phenomenological constraints on a two Higgs doublet model with lepton flavor nonconserving Yukawa couplings. We review that tan{beta} is ambiguous in such 'type III' models, and define it from the {tau} Yukawa coupling. The neutral scalars {phi} could be searched for at hadron colliders in {phi}{yields}{tau}{mu} and are constrained by the rare decay {tau}{yields}{mu}{gamma}. The Feynman diagrams for the collider process, with Higgs production via gluon fusion, are similar to the two-loop ''Barr-Zee'' diagrams, which contribute to {tau}{yields}{mu}{gamma}. Some ''tuning'' is required to obtain a collider cross section of order the standard model expectation for {sigma}(gg{yields}h{sub SM{yields}{tau}}{sup +{tau}-}), while agreeing with the current bound from {tau}{yields}{mu}{gamma}.

Davidson, Sacha; Grenier, Gerald [IPNL, Universite de Lyon, Universite Lyon 1, CNRS/IN2P3, 4 rue E. Fermi 69622 Villeurbanne cedex (France)

2010-05-01T23:59:59.000Z

197

6.172 Performance Engineering of Software Systems, Fall 2009  

E-Print Network (OSTI)

Modern computing platforms provide unprecedented amounts of raw computational power. But significant complexity comes along with this power, to the point that making useful computations exploit even a fraction of the ...

Leiserson, Charles

198

Delta Air Lines plans to increase jet fuel yield at Trainer ...  

U.S. Energy Information Administration (EIA)

Last year a few refineries had jet fuel yields in the range that Delta has planned for Trainer, but only for a few months of the year.

199

Oil degradation during oil shale retorting. [Effects on oil yields from powdered shale  

DOE Green Energy (OSTI)

Recent experimental data demonstrating the effects of varied thermal histories on oil yield from powdered Colorado shale are reviewed. Losses in overall yield resulting from interruption of a rapid heating schedule with an isothermal holding period are directly related to the amounts of oil that are produced during the holding period. These amounts are also correlated with the inert gas flow rates required to raise the yields to the assay value. The results show that degradation of oil outside the shale particles is the major determinant of oil yield from powdered shale. Maximum thermal degradation rates are calculated from these data and compared with pyrolysis rates for petroleum fractions.

Raley, J.H.; Braun, R.L.

1976-05-24T23:59:59.000Z

200

Evaluation of Cellruptor pre-treatment on biogas yield from various substrates.  

E-Print Network (OSTI)

?? In this thesis work, Cellruptor pre-treatment was evaluated in order to increase biogas yield. Initially, the effects of residence time (30, 60, 90, 120… (more)

Thiruvenkadam, Selvakumar

2011-01-01T23:59:59.000Z

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


201

Effect of Organic Farming on Soil Fertility , Yield and Quality of Crops in the Tropics  

E-Print Network (OSTI)

are the most essential crops in organic farming systems.Among the various vegetable crops grown in Kerala, cowpeahealth, yield, and quality of crops under organic farming.

Bhaskaran, Usha Pankajam; Krishna, Devi

2009-01-01T23:59:59.000Z

202

The Prospects for High-Yield ICF with a Z-Pinch Driven Dynamic Hohlraum  

Science Conference Proceedings (OSTI)

Recent success with the Sandia Z machine has renewed interest in utilizing fast z-pinenes for ICF. One promising concept places the ICF capsule internal to the imploding z-pinch. At machine parameters relevant to achieving high yield, the imploding z-pinch mass has sufficient opacity to trap radiation giving rise to a dynamic hohlraum. The concept utilizes a 12 MJ, 54 MA z-pinch driver producing a capsule drive temperature exceeding 300 eV to realize a 550 MJ thermonuclear yield. They present the current high-yield design and its development that supports high-yield ICF with a z-pinch driven dynamic hohlraum.

CHANDLER, GORDON A.; CHRIEN, R.; COOPER, GARY WAYNE; DERZON, MARK S.; DOUGLAS, MELISSA R.; HEBRON, DAVID E.; LASH, JOEL S.; LEEPER, RAMON J.; MATZEN, M. KEITH; MEHLHORN, THOMAS A.; NASH, THOMAS J.; OLSON, RICHARD E.; PETERSON, D.L.; RUIZ, CARLOS L.; SANFORD, THOMAS W. L.; SLUTZ, STEPHEN A.

1999-09-07T23:59:59.000Z

203

Coal cleaning effects during H-Coal catalytic liquefaction of a western Kentucky coal. [Effect of coal cleaning on oil yield  

SciTech Connect

Two H-Coal bench-scale liquefaction tests were performed to compare the hydroliquefaction behavior of two Kentucky No. 11 coals from the same mine: a run-of-mine coal with 17.49 W % ash and a deep-cleaned coal with 6.21 W % ash. The tests were conducted using a syncrude mode of operation. The deep-cleaned coal exhibited greater coal conversion and greater residual oil yield than the run-of-mine coal. On a dry coal basis, the deep-cleansed coal yielded approximately 19% more C/sub 4/ to 975/sup 0/F distillate than the run-of-mine coal. The process requirement of a pumpable vacuum still bottoms product would result in a 10% higher C/sub 4/ to 975/sup 0/F yield from the deep-cleaned coal than from the run-of-mine coal in a commercial H-Coal plant.

Bernard, R.F.

1978-12-01T23:59:59.000Z

204

Performance model assessment for multi-junction concentrating photovoltaic systems.  

DOE Green Energy (OSTI)

Four approaches to modeling multi-junction concentrating photovoltaic system performance are assessed by comparing modeled performance to measured performance. Measured weather, irradiance, and system performance data were collected on two systems over a one month period. Residual analysis is used to assess the models and to identify opportunities for model improvement. Large photovoltaic systems are typically developed as projects which supply electricity to a utility and are owned by independent power producers. Obtaining financing at favorable rates and attracting investors requires confidence in the projected energy yield from the plant. In this paper, various performance models for projecting annual energy yield from Concentrating Photovoltaic (CPV) systems are assessed by comparing measured system output to model predictions based on measured weather and irradiance data. The results are statistically analyzed to identify systematic error sources.

Stein, Joshua S.; Riley, Daniel M.; McConnell, Robert. (Amonix, Inc., Seal Beach, CA); Sahm, Aaron (University of Nevada, Las Vegas, NV); Crawford, Clark (Amonix, Inc., Seal Beach, CA); King, David L.; Cameron, Christopher P.; Foresi, James S. (Emcore, Inc., Albuquerque, NM)

2010-03-01T23:59:59.000Z

205

High Performance Rooftop Units  

NLE Websites -- All DOE Office Websites (Extended Search)

Presentationname High Performance RTUs Life Cycle Cost Comparison Calculator * Web-based tool for comparing costs of standard and high performance RTUs. * Weather data for 237...

206

Design of a High Intensity Neutron Source for Neutron-Induced Fission Yield Studies  

E-Print Network (OSTI)

The upgraded IGISOL facility with JYFLTRAP, at the accelerator laboratory of the University of Jyv\\"askyl\\"a, has been supplied with a new cyclotron which will provide protons of the order of 100 {\\mu}A with up to 30 MeV energy, or deuterons with half the energy and intensity. This makes it an ideal place for measurements of neutron-induced fission products from various actinides, in view of proposed future nuclear fuel cycles. The groups at Uppsala University and University of Jyv\\"askyl\\"a are working on the design of a neutron converter that will be used as neutron source in fission yield studies. The design is based on simulations with Monte Carlo codes and a benchmark measurement that was recently performed at The Svedberg Laboratory in Uppsala. In order to obtain a competitive count rate the fission targets will be placed very close to the neutron converter. The goal is to have a flexible design that will enable the use of neutron fields with different energy distributions. In the present paper, some considerations for the design of the neutron converter will be discussed, together with different scenarios for which fission targets and neutron energies to focus on.

M. Lantz; D. Gorelov; A. Jokinen; V. S. Kolhinen; A. Mattera; H. Penttilä; S. Pomp; V. Rakopoulos; S. Rinta-Antila; A. Solders

2013-04-09T23:59:59.000Z

207

Measurements of actinide-fission product yields in Caliban and Prospero metallic core reactor fission neutron fields  

SciTech Connect

In the 1970's and early 1980's, an experimental program was performed on the facilities of the CEA Valduc Research Center to measure several actinide-fission product yields. Experiments were, in particular, completed on the Caliban and Prospero metallic core reactors to study fission-neutron-induced reactions on {sup 233}U, {sup 235}U, and {sup 239}Pu. Thick actinide samples were irradiated and the number of nuclei of each fission product was determined by gamma spectrometry. Fission chambers were irradiated simultaneously to measure the numbers of fissions in thin deposits of the same actinides. The masses of the thick samples and the thin deposits were determined by mass spectrometry and alpha spectrometry. The results of these experiments will be fully presented in this paper for the first time. A description of the Caliban and Prospero reactors, their characteristics and performances, and explanations about the experimental approach will also be given in the article. A recent work has been completed to analyze and reinterpret these measurements and particularly to evaluate the associated uncertainties. In this context, calculations have also been carried out with the Monte Carlo transport code Tripoli-4, using the published benchmarked Caliban description and a three-dimensional model of Prospero, to determine the average neutron energy causing fission. Simulation results will be discussed in this paper. Finally, new fission yield measurements will be proposed on Caliban and Prospero reactors to strengthen the results of the first experiments. (authors)

Casoli, P.; Authier, N. [CEA, Centre de Valduc, 21120 Is-sur-Tille (France); Laurec, J.; Bauge, E.; Granier, T. [CEA, Centre DIF, 91297 Arpajon (France)

2011-07-01T23:59:59.000Z

208

Materials Performance Staff  

Science Conference Proceedings (OSTI)

... Kinetics Staff; Materials Science and Engineering Division Staff Directory; MML Organization. Contact. Materials Performance ...

2013-08-20T23:59:59.000Z

209

Modern Performance Monitoring  

Science Conference Proceedings (OSTI)

Today's diverse and decentralized computer world demands new thinking about performance monitoring and analysis.

Mark Purdy

2006-02-01T23:59:59.000Z

210

Behavior-level yield enhancement approach for large-scaled analog circuits  

Science Conference Proceedings (OSTI)

In traditional yield enhancement approaches, a lot of computation efforts have to be paid first to find the feasible regions and the Pareto fronts, which will become a heavy cost for large analog circuits. In order to reduce the computation efforts, ... Keywords: analog circuits, process variation, yield enhancement

Chin-Cheng Kuo; Yen-Lung Chen; I-Ching Tsai; Li-Yu Chan; Chien-Nan Jimmy Liu

2010-06-01T23:59:59.000Z

211

High-precision location and yield of North Korea's 2013 nuclear test Miao Zhang1  

E-Print Network (OSTI)

High-precision location and yield of North Korea's 2013 nuclear test Miao Zhang1 and Lianxing Wen2 Korea's 2009 nuclear test as reference and satellite imagery, we show that the location and yield of North Korea's 2013 nuclear test can be quickly and accurately determined based on seismic data. North

Wen, Lianxing

212

Post-routing redundant via insertion for yield/reliability improvement  

Science Conference Proceedings (OSTI)

Reducing the yield loss due to via failure is one of the important problems in design for manufacturability. A well known and highly recommended method to improve via yield/reliability is to add redundant vias. In this paper we study the problem of post-routing ...

Kuang-Yao Lee; Ting-Chi Wang

2006-01-01T23:59:59.000Z

213

Estimation of the annual yield of organic carbon released from carbonates and shales by chemical weathering  

E-Print Network (OSTI)

Estimation of the annual yield of organic carbon released from carbonates and shales by chemical matter yield induced by chemical weathering of carbonates and shales, considering their global surface carbonate rocks and shales weathering in major world watersheds, published by numerous authors. The results

Paris-Sud XI, Université de

214

To study of different level of nitrogen manure and density on yield and yield component of variety of K.S.C 704 in dry region of sistan  

Science Conference Proceedings (OSTI)

Out of three grain of the world, Corn is one of the best, About 7 to 10 thousand years ago in south of Mexico corn become domesticated. In the year 1995 culfivation of corn in the world was 130 mil/ha, and to Total production of the world of corn is 507 M/Tons. Average yield of corn in the year 1995 Among Producer countries was 7.78 To 7.60 t/ha in fance and united state was state was 2.36 To 2.20 t/ha, but in Brazil and Mexico Production of corn was different. With this regards, special manner has been arranged for the suitable cultivation or suitable density plants in one heactar on cultivation variety of K.S.C 704 corn. Also suitable level of Nitrogen manure, this Protect in climatic condition of Sistan region done, sith complete block design with 3 replication. Experiment has been selected as split plot, the main plot with 4 different concentration level such as (200-250-3500 and 350 Kg/ha) and sub plot density with 3 different level such as 111000,83000 and 66000 plan/ha respectively. From stage growth up to harvesting of corn in this reache having Data for each treat. ment, After harvesting Analysis of variance and companion of Average of each treatment has been done by DunKan method. Results has been shown, Measurment of characteristics (yield component) seed yield effected different density level of manure, with increasing of manure weight of one thousand seed yield and also in high density showed high significant differente amoung each other. These are with suitable climatic condition of sistan region if enough water will be available ed using Amount of 350 ks/ha Nitrogen manure and with density 111000 plants/ha we can product suitable seed yield Biological yield.

Dahmardeh, M.; Forghani, F.; Khammari, E. [Department of Agronomy, Plant breeding and genetic, Faculty of Agricutlure, Zabol University (Iran, Islamic Republic of)

2008-01-30T23:59:59.000Z

215

Evaluate reformer performance at a glance  

Science Conference Proceedings (OSTI)

Catalytic reforming is becoming increasingly important in replacing octane lost as the removal of lead from worldwide gasoline pools continues. A method has been developed that can quickly evaluate the performance of any catalytic reformer. The catalytic naphtha reforming process primarily involves three well-known reactions. These are aromatization of naphthenes, cyclization of paraffins and hydrocracking of paraffins. Hydrogen is produced in the process of aromatization and dehydrocyclization of paraffins. Reformer performance is normally evaluated with a reformate analysis (PONA) and yield of C{sub 5{sup +}} reformate. This method of quick evaluation of reformer performance is based upon the main assumption that the increase in hydrocarbon moles in the process is equal to the number of C{single_bond}C bond ruptures and one mole of hydrogen is absorbed to saturate the same. This new method calculates aromatization efficiency, paraffin conversion, aromatic selectivity and finally the paraffin, naphthene and aromatic content of C{sub 5{sup +}} reformate.

Nag, A. [Indian Oil Corporation Ltd., Gujarat (India)

1996-02-01T23:59:59.000Z

216

Wide rows on a u-pick farm provide space for people to make multiple harvests. Plant spacing affects yield.  

E-Print Network (OSTI)

to yield per square foot (column 5 of Table 1), it's remarkable how similar yield ranges are for a diverse. As a General Guideline, a Yield Expectation of 0.5 lb/square foot* is a realistic value for Mixed Stand, Small professionals use these target yields to assist them in predicting cost and return budgets, number of seeds

Goodman, Robert M.

217

Contractor Past Performance Information  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

December 2009) December 2009) 1 Contractor Performance Information Guiding Principles The primary purpose of past performance evaluations is to ensure that accurate data on contractor performance is current and available for use in source selections. A past performance evaluation report provides a record of a contractor's performance, both positive and negative, on a given contract during a specified period of time. The quality of the narrative component supporting the past performance information evaluation is critical. If the evaluator takes the time to prepare an accurate and complete report, the evaluator helps ensure better quality in the products and services DOE buys now and those DOE plans to buy in the future.

218

Pyrolysis of oil shale: the effects of thermal history on oil yield  

DOE Green Energy (OSTI)

The effect of thermal history on the oil yield of a powdered, 22-gallon-per-ton Colorado shale was studied by heating to test temperature at Fischer assay rate (12/sup 0/C/min), holding a test temperature for varying times up to 33 d, and finally heating to 500/sup 0/C at 12/sup 0/C/min. Test temperatures covered the range of 150 to 450/sup 0/C. Both autogenous (self-generated) and inert sweep gas atmospheres were used. Under autogenous atmospheres at test temperatures of 250/sup 0/C or below, yields obtained were 100 percent of Fischer assay. Heating at 300 to 425/sup 0/C resulted in yield losses, maximizing at 19 percent after a 33-d exposure at 350/sup 0/C. Yield losses are accompanied by increased char in the retorted shale and by production of oil that is lower in density and nitrogen content, and higher in hydrogen. In the inert gas sweep experiments, increasing flow rates gave increased oil yields, approaching 100 percent assay. This is attributed to reduced thermal degradation of oil in the retort. The total yield appears to be determined by the temperature-time exposure of the liberated oil and is not affected by the thermal history of the kerogen. The results indicate that the high gas sweep rates planned for in-situ retorting will be advantageous to oil yield. (auth)

Stout, N.D.; Koskinas, G.J.; Raley, J.H.; Santor, S.D.; Opila, R.J.; Rothman, A.J.

1976-04-27T23:59:59.000Z

219

MASS YIELDS FROM FISSION BY NEUTRONS BETWEEN THERMAL AND 14.7 MEV  

SciTech Connect

Radiochemically determined mass-yield curves are given for the fission of U/sup 235/ and U/sup 238/ by l4.7-Mev neutrons. Symmetric and to a less extent, very asymmetric modes of fission are more probable at that energy than in thermal fission. Yields of four fission products from the fission of U/sup 235/ have been measured as a function of neutron energy in the range thermal to 14 Mev. The yields of eleven masses have been measured from the fission of Np/sup 237/ by degraded fission spectrum neutrons. The mass-yield curve is similar to that from the thermal fission of Pu/sup 239/ with a ratio of peak to valley yields of approximately 175. Relative yields of one peak fission product and four valley fission products have been determdned under the following conditions: fission of U/sup 235/ and Pu/sup 239/ with thermal neutrons; fission of U/sup 235/ Pu/sup 239/ and U/sup 238/ with fission spectrum neutrons; and fission of U//sup 235/ and Pu/sup 239/ with the intermediate neutron spectrum at the center of the Los Alamos Fast Reactor. Absolute yields of Moss have been determined from the fission of U/sup 235/,Pu/sup 239/ with thermal neutrons. (auth)

Ford, G.P.; Gilmore, J.S.; Ames, D.P.; Balagna, J.P.; Barnes, J.W.; Comstock, A.A.; Cowan, G.A.; Elkin, P.B.; Hoffman, D.C.; Knobeloch, G.W.; Lang, E.J.; Melnick, M.A.; Minkkinen, C.O.; Pollock, B.D.; Sattizshn, J.E.; Stanley, C.W.; Warren, B.

1956-02-01T23:59:59.000Z

220

Yield criteria for quasibrittle and frictional materials: a generalization to surfaces with corners  

E-Print Network (OSTI)

Convexity of a yield function (or phase-transformation function) and its relations to convexity of the corresponding yield surface (or phase-transformation surface) is essential to the invention, definition and comparison with experiments of new yield (or phase-transformation) criteria. This issue was previously addressed only under the hypothesis of smoothness of the surface, but yield surfaces with corners (for instance, the Hill, Tresca or Coulomb-Mohr yield criteria) are known to be of fundamental importance in plasticity theory. The generalization of a proposition relating convexity of the function and the corresponding surface to nonsmooth yield and phase-transformation surfaces is provided in this paper, together with the (necessary to the proof) extension of a theorem on nonsmooth elastic potential functions. While the former of these generalizations is crucial for yield and phase-transformation condition, the latter may find applications for potential energy functions describing phase-transforming materials, or materials with discontinuous locking in tension, or contact of a body with a discrete elastic/frictional support.

Andrea Piccolroaz; Davide Bigoni

2009-04-24T23:59:59.000Z

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


221

Photovoltaic System Performance  

Energy.gov (U.S. Department of Energy (DOE))

Photovoltaic (PV) systems are usually composed of numerous solar arrays, which in turn, are composed of numerous PV cells. The performance of the system is therefore dependent on the performance of...

222

Hopper Performance and Optimization  

NLE Websites -- All DOE Office Websites (Extended Search)

Optimization Optimization Performance and Optimization Compiler Comparisons Comparison of different compilers with different options on several benchmarks. Read More » Using OpenMP Effectively Performance implications and case studies of codes combining MPI and OpenMP Read More » Reordering MPI Ranks Reordering MPI ranks can result in improved application performance depending on the communication patterns of the application. Read More » Application Performance Variability on Hopper How an application is placed across Hopper's roughly 6300 compute nodes can affect its performance. See a study of application runtimes vs node placement. Read More » Hopper Performance Monitoring Benchmarking performance of scientific applications on Hopper Read More » Hopper:Improving I/O performance to GSCRATCH and PROJECT

223

Performance and security tradeoff  

Science Conference Proceedings (OSTI)

A tradeoff is a situation that involves losing one quality or aspect of something in return for gaining another quality or aspect. Speaking about the tradeoff between performance and security indicates that both, performance and security, can be measured, ...

Katinka Wolter; Philipp Reinecke

2010-06-01T23:59:59.000Z

224

Gasification Systems Projects & Performers  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Systems Gasification Systems Projects & Performers Gasification Systems - Key Technologies Feed Systems Gasifier Optimization and Plant Supporting Systems Syngas...

225

Key Performance Indicator Effectiveness  

Science Conference Proceedings (OSTI)

... Outcome: OMAC Standardized Working-Steps for CNC Milling Machines; Output: Reference document describing performance metrics and ...

2013-01-04T23:59:59.000Z

226

Formaldehyde yields from methanol electrochemical oxidation on carbon-supported platinum catalysts  

Science Conference Proceedings (OSTI)

The formation of formaldehyde during methanol electrochemical oxidation on supported Pt and Pt-Ru catalysts was investigated. While on solid platinum electrodes, the formaldehyde yields from methanol oxidation are near 30% at low potentials; the yields fall below 2% for methanol electrochemical oxidation on carbon-supported catalysts in Nafion. The lower formaldehyde yields, which result from more complete methanol oxidation, are believed to arise from the ability of partial oxidation products to be transported to an array of active catalyst sites dispersed within the three-dimensional network of the Nafion film.

Childers, C.L.; Huang, H.; Korzeniewski, C. [Texas Tech Univ., Lubbock, TX (United States). Dept. of Chemistry and Biochemistry

1999-02-02T23:59:59.000Z

227

Reaction $nu$d $Yields$ $mu$$sup -$pp/sub s/  

SciTech Connect

After making the usual model assumptions, the shape of the dsigma/dQ$sup 2$ distribution and the energy dependence and magnitude of the cross section were fit in order to determine the shape of the form factors for the reaction $nu$d $Yields$ $mu$$sup -$pp. It is noted that one can also test the CVC hypothesis. The cross section is shown as a function of neutrino energy for the $nu$n $Yields$ $mu$$sup -$p reaction. Also shown is the Q$sup 2$ dependence of the $nu$n $Yields$ $mu$$sup -$p events. (JFP)

Barish, S.J.; Derrick, M.; Hyman, L.; Musgrave, B.; Schreiner, P.; Singer, R.; Barnes, V.; Carmony, D.; Garfinkel, A.

1975-01-01T23:59:59.000Z

228

Measurement of Pressure Dependent Fluorescence Yield of Air: Calibration Factor for UHECR Detectors  

SciTech Connect

In a test experiment at the Final Focus Test Beam of the Stanford Linear Accelerator Center, the fluorescence yield of 28.5 GeV electrons in air and nitrogen was measured. The measured photon yields between 300 and 400 nm at 1 atm and 29 C are Y(760 Torr){sup air} = 4.42 {+-} 0.73 and Y(760 Torr){sup N{sub 2}} = 29.2 {+-} 4.8 photons per electron per meter. Assuming that the fluorescence yield is proportional to the energy deposition of a charged particle traveling through air, good agreement with measurements at lower particle energies is observed.

Belz, J.W.; Burt, G.W.; Cao, Z.; Chang, F.Y.; Chen, C.C.; Chen, C.W.; Chen, P.; Field, C.; Findlay, J.; Huntemeyer, Petra; Huang, M.A.; Hwang, W.-Y.P.; Iverson, R.; Jones, B.F.; Jui, C.C.H.; Kirn, M.; Lin, G.-L.; Loh, E.C.; Maestas, M.M.; Manago, N.; Martens, K.; /Montana U. /Utah U. /Taiwan, Natl. Taiwan U. /SLAC /Rutgers U., Piscataway

2005-07-06T23:59:59.000Z

229

Performance Computing with  

E-Print Network (OSTI)

High Performance Computing with Iceberg. Mike Griffiths Bob Booth November 2005 AP-Unix4 © University of Sheffield #12;Bob Booth High Performance Computing with Iceberg Contents 1. REVIEW OF AVAILABLE 23 7.1 USING FUSE TO MOUNT FILE SYSTEMS ON ICEBERG 23 2 #12;Bob Booth High Performance Computing

Martin, Stephen John

230

High Performance Computing in  

E-Print Network (OSTI)

High Performance Computing in Bioinformatics Thomas Ludwig (t.ludwig@computer.org) Ruprecht PART I: High Performance Computing Thomas Ludwig PART II: HPC Computing in Bioinformatics Alexandros #12;© Thomas Ludwig, Alexandros Stamatakis, GCB'04 3 PART I High Performance Computing Introduction

Stamatakis, Alexandros

231

Contractor Past Performance Information  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

March 2013) March 2013) 1 Contractor Performance Information This updated chapter incorporates the Office of Federal Procurement Policy (OFPP) policy that effective October 1, 2010, Contractor Performance Assessment Reporting System (CPARS) is the single government-wide feeder system for past performance information reporting. This chapter supplements the CPARS Guide and related user manuals for all modules available at the CPARS website. The CPARS Guide includes consistent processes and procedures for agencies to use when reporting on past performance information and should be read in conjunction with Federal Acquisition Regulation (FAR) Part 42.15 and other FAR Parts related to past performance information. When needed, this Acquisition Guide Chapter provides

232

ARM - 2008 Performance Metrics  

NLE Websites -- All DOE Office Websites (Extended Search)

8 Performance Metrics 8 Performance Metrics Science Research Themes Research Highlights Journal Articles Collaborations Atmospheric System Research (ASR) ARM Science Team Meetings User Meetings Annual Meetings of the Atmospheric System Research (ASR) Science Team and Fall Working Groups Accomplishments Read about the 20 years of accomplishments (PDF, 696KB) from the ARM Program and user facility. Performance Metrics ASR Metrics 2009 2008 2007 2006 2008 Performance Metrics Each year, the ARM Program must submit to DOE an overall performance measure related to scientific achievement. The overall performance measure includes specific metrics for reporting progress each quarter. This reporting process includes support documentation (usually a report or data file) appropriate for the metric. Overall Performance Measures

233

High Performance Computing  

NLE Websites -- All DOE Office Websites (Extended Search)

Information Science, Computing, Applied Math » Information Science, Computing, Applied Math » High Performance Computing High Performance Computing Providing world-class high performance computing capability that enables unsurpassed solutions to complex problems of strategic national interest Gary Grider High Performance Computing Division Leader Randal Rheinheimer High Performance Computing Deputy Division Leader Contact Us Carol Hogsett Student/Internship Opportunities Email Division Office Email Managing world-class supercomputing centers Powerall simulations modeling Read caption + The Powerwall is used by LANL scientists to view objects and processes in 3D. High Performance Computing video 13:01 Gary Grider, HPC Divison Leader The High Performance Computing (HPC) Division supports the Laboratory mission by managing world-class Supercomputing Centers.

234

DOE/IG Annual Performance Report FY 2008, Annual Performance...  

NLE Websites -- All DOE Office Websites (Extended Search)

Performance Report FY 2008, Annual Performance Plan FY 2009 More Documents & Publications Office Inspector General DOE Annual Performance Report FY 2008, Annual Performance Plan FY...

235

Dependence of Sea Ice Yield-Curve Shape on Ice Thickness  

Science Conference Proceedings (OSTI)

In this note, the authors discuss the contribution that frictional sliding of ice floes (or floe aggregates) past each other and pressure ridging make to the plastic yield curve of sea ice. Using results from a previous study that explicitly ...

Alexander V. Wilchinsky; Daniel L. Feltham

2004-12-01T23:59:59.000Z

236

Measuring the absolute DT neutron yield using the Magnetic Recoil Spectrometer at OMEGA and the NIF  

SciTech Connect

A Magnetic Recoil Spectrometer (MRS) has been installed and extensively used on OMEGA and the National Ignition Facility (NIF) for measurements of the absolute neutron spectrum from inertial confinement fusion (ICF) implosions. From the neutron spectrum measured with the MRS, many critical implosion parameters are determined including the primary DT neutron yield, the ion temperature, and the down-scattered neutron yield. As the MRS detection efficiency is determined from first principles, the absolute DT neutron yield is obtained without cross-calibration to other techniques. The MRS primary DT neutron measurements at OMEGA and the NIF are shown to be in excellent agreement with previously established yield diagnostics on OMEGA, and with the newly commissioned nuclear activation diagnostics on the NIF.

Mackinnon, A; Casey, D; Frenje, J A; Johnson, M G; Seguin, F H; Li, C K; Petrasso, R D; Glebov, V Y; Katz, J; Knauer, J; Meyerhofer, D; Sangster, T; Bionta, R; Bleuel, D; Hachett, S P; Hartouni, E; Lepape, S; Mckernan, M; Moran, M; Yeamans, C

2012-05-03T23:59:59.000Z

237

Comparison of biological and chemical phosphorus fertilizers on rapeseed yield in Iran  

E-Print Network (OSTI)

PSB) on Potato Yield at Iran Environment. Procceding of 18Arak Islamic Azad University, Iran (Table 1) in the 2006/07Arak Islamic Azad University, Iran. Physical properties 0-30

Madani, hamid; Kelarestaghi, Kioomars Bakhsh; Malboobi, Mohammad Ali

2009-01-01T23:59:59.000Z

238

NETL: News Release - NETL-Funded R&D Yields Non-Disruptive Plastic...  

NLE Websites -- All DOE Office Websites (Extended Search)

Date: February 20, 2007 NETL-Funded R&D Yields Non-Disruptive Plastic Natural Gas Pipeline Repair Tool New Tool Offers Economic, Safety, and Environmental Benefits in Repairing...

239

CH Activation and Oxidation of Methane to Methanol in High Yield...  

NLE Websites -- All DOE Office Websites (Extended Search)

CH Activation and Oxidation of Methane to Methanol in High Yield with Novel Pt Complexes Speaker(s): Roy Periana Date: April 27, 1999 - 12:00pm Location: Bldg. 90 Seminar Host...

240

Yield enhancement of reconfigurable microfluidics-based biochips using interstitial redundancy  

Science Conference Proceedings (OSTI)

Microfluidics-based biochips for biochemical analysis are currently receiving much attention. They automate highly repetitive laboratory procedures by replacing cumbersome equipment with miniaturized and integrated systems. As these microfluidics-based ... Keywords: Microfluidics, reconfiguration, space redundancy, yield enhancement

Fei Su; Krishnendu Chakrabarty

2006-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "yields unprecedented performance" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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241

Yield, quality components and nitrogen levels of silage corn fertilized with urea and zeolite  

E-Print Network (OSTI)

and N fertilization affect corn silage yield and quality. Jand the nitrogen status of corn. J Prod Agric. 1991;4:525-and nitrogen effects on corn silage. Agron. J. ___, Kalonge

Bernardi, Alberto C. de Campos; Souza, Gilberto Batista de; Polidoro, José Carlos; Paiva, Paulo Renato Perdigão; Monte, Marisa Bezerra de Melo

2009-01-01T23:59:59.000Z

242

REDUCING DEVICE YIELD FALLOUT AT WAFER LEVEL TEST WITH ELECTROHYDRODYNAMIC (EHD) CLEANING  

Science Conference Proceedings (OSTI)

Unstable contact resistance (CRES) during wafer test cansignificantly affect device yield, the need for reprobe, andequipment uptime. Abrasive cleaning during off-lineprobe card repair and maintenance is effective forreducing CRES and removing surface ...

Jerry J. Broz; Ph. D. ,. James C. Andersen; Reynaldo M. Rincon

2000-10-01T23:59:59.000Z

243

Impact of Climate Change on Crop Yield: A Case Study of Rainfed Corn in Central Illinois  

Science Conference Proceedings (OSTI)

This paper assesses the effect of climate change on crop yield from a soil water balance perspective. The uncertainties of regional-scale climate models, local-scale climate variability, emissions scenarios, and crop growth models are combined to ...

Ximing Cai; Dingbao Wang; Romain Laurent

2009-09-01T23:59:59.000Z

244

Furrow Diking Technology for Agricultural Water Conservation and its Impact on Crop Yields in Texas  

E-Print Network (OSTI)

Furrow diking is a practical, efficient and low-cost technique to conserve water and increase crop yields. Improvements in diker design and the increased use of herbicides have resulted in the rapid spread of furrow diking in the Texas High Plains and other regions. To quantify the long-term effects of diking on crop yields, a computer simulation approach was used. Three crop models for sorghum, corn and cotton were combined with surface runoff hydrology algorithms, based on the USDA-SCS curve number methodology. The combination models called SORDIKE, CORDIKE and COTDIKE were run to determine the effects of conserving the runoff (by diking) on crop yields. Three scenarios of not diking, diking in the growing season, and diking all year were simulated. Daily weather data for 25 years from five Texas regions were used for the analyses. Depending on the location, furrow diking in the growing season increased average annual sorghum yields by 320 to 570 kg/ha, corn yields by 180 to 570 kg/ha, and cotton lint yields by 10 to 20 kg/ha. Diking the land throughout the year increased mean annual yields by 440 to 1080 kg/ha of sorghum, 210 to 800 kg/ha of corn and 10 to 30 kg/ha of cotton lint. The study indicated that furrow diking can be a valuable management practice for about 3.4 million ha of cropped area in the semi-arid and sub-humid regions of Texas. The practice may be useful in other areas also, to mitigate the effects of short duration moisture stress on crop yields.

Krishna, J. Hari; Arkin, Gerald F.

1988-07-01T23:59:59.000Z

245

B{yields}S transition form factors in the perturbative QCD approach  

SciTech Connect

Under two different scenarios for the light scalar mesons, we investigate the transition form factors of B(B{sub s}) mesons decay into a scalar meson in the perturbative QCD approach. In the large recoiling region, the form factors are dominated by the short-distance dynamics and can be calculated using perturbation theory. We adopt the dipole parametrization to recast the q{sup 2} dependence of the form factors. Since the decay constants defined by the scalar current are large, our predictions on the B{yields}S form factors are much larger than the B{yields}P transitions, especially in the second scenario. Contributions from various light-cone distribution amplitudes (LCDAs) are elaborated and we find that the twist-3 LCDAs provide more than one-half of the contributions to the form factors. The two terms of the twist-2 LCDAs give destructive contributions in the first scenario while they give constructive contributions in the second scenario. With the form factors, we also predict the decay width and branching ratios of the semileptonic B{yields}Sl{nu} and B{yields}Sl{sup +}l{sup -} decays. The branching ratios of B{yields}Sl{nu} channels are found to have the order of 10{sup -4} while those of B{yields}Sl{sup +}l{sup -} have the order of 10{sup -7}. These predictions can be tested by the future experiments.

Li Runhui [School of Physics, Shandong University, Jinan, Shandong 250100 (China); Institute of High Energy Physics, P.O. Box 918 (4), Beijing 100049 (China); Lue Caidian [Institute of High Energy Physics, P.O. Box 918(4), Beijing 100049 (China); Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing 210097 (China); Wang Wei; Wang Xiaoxia [Institute of High Energy Physics, P.O. Box 918(4), Beijing 100049 (China)

2009-01-01T23:59:59.000Z

246

Oversight of Performance-based Contracts | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Oversight of Performance-based Contracts Oversight of Performance-based Contracts Oversight of Performance-based Contracts DOE's use of performance-based approaches in acquiring everything from routine services to construction of complex research facilities to environmental clean-up has yielded impressive dividends through higher quality performance and improved cost control by the contractor. The use of performance-based approaches drives fundamental changes in traditional contract administration techniques, as well as the need for more effective contract administration tools. This training session provides an overview of the latest techniques available to administer performance-based contracts, including the use of Earned Value Management (EVM) techniques, a project management tool that can be used to more

247

Measured Performance Signature Method  

E-Print Network (OSTI)

The performance correction of systems that have many thermally integrated components is complex and subject to error if individual component misperformance and/or deterioration is present. The performance correction involves a set of equations or curves which relate the expected changes in dependent performance parameters (i.e. output, fuel consumption, etc.) to changes in the dependent parameters defining a standard condition (i.e. ambient temperatures, pressure, fuel composition, etc.). These relations and curves are usually generated by vendor performance programs which reflect the design data of the given plant components. However, such relations and curves applied to the overall correction of thermally integrated components can introduce significant correction error if the equipment performance differs from the expected design values. This can be particularly important in acceptance testing and base line monitoring of older plants where performance deterioration has occurred. The performance testing or monitoring of power plants requires that results be corrected to a given reference or standard condition. This correction procedure may be used in various applications, including determining compliance to a guarantee that is specified to a given reference, to compare different plants under similar operating conditions, and/or to track the performance of a given plant with time on a consistent basis. A Measured Performance Signature (MPS) approach has been developed to improve integrated system performance corrections. This procedure is useful for acceptance testing and continuous performance monitoring of industrial cogeneration plants or any energy system. The plant performance signature, is determined from on-line measurements, and corrected to a specified reference. This procedure provides information for adaptive on-line optimum dispatch, equipment performance monitoring, or for conducting system "what if' scenarios. The MPS is a very useful technique which may be applied to Acceptance Testing Monitoring and Operations Optimization. The technique is general and can be applied to all types of plant equipment and configurations.

Ahner, D. J.

1996-04-01T23:59:59.000Z

248

Essays on the Impact of Climate Change and Building Codes on Energy Consumption and the Impact of Ozone on Crop Yield  

E-Print Network (OSTI)

15.2 Crop yield14 Impact of ozone on crop yield 15 Data 15.1 Ozonecrop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Aroonruengsawat, Anin

2010-01-01T23:59:59.000Z

249

The Air Microwave Yield (AMY) experiment - A laboratory measurement of the microwave emission from extensive air showers  

E-Print Network (OSTI)

The AMY experiment aims to measure the microwave bremsstrahlung radiation (MBR) emitted by air-showers secondary electrons accelerating in collisions with neutral molecules of the atmosphere. The measurements are performed using a beam of 510 MeV electrons at the Beam Test Facility (BTF) of Frascati INFN National Laboratories. The goal of the AMY experiment is to measure in laboratory conditions the yield and the spectrum of the GHz emission in the frequency range between 1 and 20 GHz. The final purpose is to characterise the process to be used in a next generation detectors of ultra-high energy cosmic rays. A description of the experimental setup and the first results are presented.

K. Louedec; J. Alvarez-Muñiz; M. Blanco; M. Bohácová; B. Buonomo; G. Cataldi; M. R. Coluccia; P. Creti; I. De Mitri; C. Di Giulio; P. Facal San Luis; L. Foggetta; R. Gaïor; D. Garcia-Fernandez; M. Iarlori; S. Le Coz; A. Letessier-Selvon; I. C. Mari?; D. Martello; G. Mazzitelli; M. Monasor; L. Perrone; R. Pesce; S. Petrera; P. Privitera; V. Rizi; G. Rodriguez Fernandez; F. Salamida; G. Salina; M. Settimo; P. Valente; J. R. Vazquez; V. Verzi; C. Williams

2013-10-17T23:59:59.000Z

250

Developing Human Performance Measures  

Science Conference Proceedings (OSTI)

Through the reactor oversight process (ROP), the U.S. Nuclear Regulatory Commission (NRC) monitors the performance of utilities licensed to operate nuclear power plants. The process is designed to assure public health and safety by providing reasonable assurance that licensees are meeting the cornerstones of safety and designated crosscutting elements. The reactor inspection program, together with performance indicators (PIs), and enforcement activities form the basis for the NRC’s risk-informed, performance based regulatory framework. While human performance is a key component in the safe operation of nuclear power plants and is a designated cross-cutting element of the ROP, there is currently no direct inspection or performance indicator for assessing human performance. Rather, when human performance is identified as a substantive cross cutting element in any 1 of 3 categories (resources, organizational or personnel), it is then evaluated for common themes to determine if follow-up actions are warranted. However, variability in human performance occurs from day to day, across activities that vary in complexity, and workgroups, contributing to the uncertainty in the outcomes of performance. While some variability in human performance may be random, much of the variability may be attributed to factors that are not currently assessed. There is a need to identify and assess aspects of human performance that relate to plant safety and to develop measures that can be used to successfully assure licensee performance and indicate when additional investigation may be required. This paper presents research that establishes a technical basis for developing human performance measures. In particular, we discuss: 1) how historical data already gives some indication of connection between human performance and overall plant performance, 2) how industry led efforts to measure and model human performance and organizational factors could serve as a data source and basis for a framework, 3) how our use of modeling and simulation techniques could be used to develop and validate measures of human performance, and 4) what the possible outcomes are from this research as the modeling and simulation efforts generate results.

Jeffrey Joe; Bruce Hallbert; Larry Blackwood; Donald Dudehoeffer; Kent Hansen

2006-05-01T23:59:59.000Z

251

Math Library Performance  

NLE Websites -- All DOE Office Websites (Extended Search)

Math Library Performance Math Library Performance Math Library Performance Fully optimizing a given application's performance often requires a deep understand of the source, an accurate profile for a representative run and the ability to have changes to the source accepted upstream. However, in many cases, significant performance gains can be achieved by simply optimizing the code over the matrix of possible compilers, compiler options and libraries available on a given machine. Here, we explore the performance variability of common materials science applications at NERSC with respect to the compilers and libraries available on Edison, NERSC's Cray XC30. NERSC currently supports compilers from three different vendors on the XC30 system, Edison: Intel, GNU and Cray. Materials science applications

252

Buildings Performance Database  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE Buildings Performance DOE Buildings Performance Database Paul Mathew Lawrence Berkeley National Laboratory pamathew@lbl.gov (510) 486 5116 April 3, 2013 Standard Data Spec API 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: * Large-scale high-quality empirical data on building energy performance is critical to support decision- making and increase confidence in energy efficiency investments. * While there are a many potential sources for such data,

253

Effects of total solids concentrations of poultry, cattle, and piggery waste slurries on biogas yield  

SciTech Connect

The effects of total solids concentrations of poultry, cattle and piggery waste slurries on biogas yield was investigated. Twelve laboratory-size anaerobic batch digesters with 25 L volume were constructed and used for the experiments. Three replicates of 5%, 10%, 15%, and 20% TS concentrations of poultry, cattle, and piggery waste slurries were anaerobically digested for a 30-day detention period and gas yield was measured by the method of water displacement. Temperature variation within the digesters was measured with a maximum and minimum thermometer. Anaerobic digestion of the slurries was undertaken in the mesophilic temperature range (20--40 C). The carbon:nitrogen ratio of each of the slurries digested was determined. The carbon content was determined using the wackley-Black method, and nitrogen content was determined by the regular kjeldhal method. The pH was measured weekly during the period of digestion from a digital pH meter. Gas quality (% methane fraction) was also measured weekly from an analyzer. Coefficient of variation was computed to ascertain the status of the digestion process. Analysis of variance was used to determine the significant difference in gas yield at p < 0.05. Duncan's New Multiple Range Test at p < 0.05 was used to analyze the difference in gas yield among the various TS concentrations of the slurries investigated. The results indicate that biogas yield is of the order: 5% TS > 10% TS > 15% TS > 20% TS. This result shows that gas yield increases with decreasing TS concentration of the slurries. The ANOVA showed that the gas yield from the various TS % was significantly different (p < 0.05). DNMRT showed that there was significant difference in gas yield from the slurries and wastetypes investigated. Poultry waste slurries had the greatest gas yield (L CH4/kg TS) as the gas yield from the waste types was of the order: Poultry > Piggery > Cattle. The pH of the slurries was of the range 5.5 to 6.8 (weakly acidic). The C:N of the slurries varied between 6:1 and 9:1. The Coefficient of Variation (CV) for 10 consecutive days of digestion was less than 10% indicating a steady state in all the digesters.

Itodo, I.N.; Awulu, J.O.

1999-12-01T23:59:59.000Z

254

Performance and Optimization  

NLE Websites -- All DOE Office Websites (Extended Search)

and Optimization Performance and Optimization Compiler Comparisons Using a set of benchmarks described below, different optimization options for the different compilers on...

255

Performance and optimization  

NLE Websites -- All DOE Office Websites (Extended Search)

they exercise. This categorization is similar in spirit to that used in the BLAS API. Currently, the levels are: Stability Tests Performance Tests Level 0: Very low level...

256

Performance (perfSONAR)  

NLE Websites -- All DOE Office Websites (Extended Search)

trouble@es.net Provide Web Site Feedback: info@es.net Network Performance and Troubleshooting (perfSONAR) perfSONAR: Comprehensive monitoring and measuring of network...

257

.NET High Performance Computing.  

E-Print Network (OSTI)

?? Graphics Processing Units (GPUs) have been extensively applied in the High Performance Computing (HPC) community. HPC applications require additional special programming environments to improve… (more)

Ou, Hsuan-Hsiu

2012-01-01T23:59:59.000Z

258

Criteria for Performance Excellence  

Science Conference Proceedings (OSTI)

... come to symbolize America's commitment to ... Project your organization's future pERFORManCE relative to ... expectations and securing your CUSTOM ...

2012-09-15T23:59:59.000Z

259

Photovoltaic array performance model.  

DOE Green Energy (OSTI)

This document summarizes the equations and applications associated with the photovoltaic array performance model developed at Sandia National Laboratories over the last twelve years. Electrical, thermal, and optical characteristics for photovoltaic modules are included in the model, and the model is designed to use hourly solar resource and meteorological data. The versatility and accuracy of the model has been validated for flat-plate modules (all technologies) and for concentrator modules, as well as for large arrays of modules. Applications include system design and sizing, 'translation' of field performance measurements to standard reporting conditions, system performance optimization, and real-time comparison of measured versus expected system performance.

Kratochvil, Jay A.; Boyson, William Earl; King, David L.

2004-08-01T23:59:59.000Z

260

Performance Incentives Date  

NLE Websites -- All DOE Office Websites (Extended Search)

outstanding Database) issues (Le., file documents, Congressional directed projects database updates), will not be assessed against this performance incentive. . 3 IT Help...

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


261

Technology Performance Exchange  

NLE Websites -- All DOE Office Websites (Extended Search)

Technology Performance Exchange TDM - Jason Koman (BTO) TDM - Dave Catarious (FEMP) William Livingood National Renewable Energy Laboratory William.Livingood@nrel.gov 303-384-7490...

262

Contractor Past Performance Information  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

August 2013) 1 Contractor Performance Information This chapter incorporates the Office of Federal Procurement Policy (OFPP) policy that became effective October 1, 2010, Contractor...

263

Performance indicators - TMS  

Science Conference Proceedings (OSTI)

Feb 17, 2009 ... Low energy consumption (MWh/t) ... 1) Define individual performance indicators. 2) Develop .... Required to face Alma high intensity low energy ...

264

High Performance Tooling Materials  

Science Conference Proceedings (OSTI)

High performance tools are necessary for the successful manufacturing of every consumer product as well as oil drilling and mining operations. Increasing ...

265

Lineshape of e{sup +}e{sup -{yields}}D*D+c.c. and electromagnetic form factor of D*{yields}D transition in the timelike region  

SciTech Connect

In this work, we apply the vector meson dominance model to extract the electromagnetic timelike form factor of the D*{yields}D transition combining the recent Belle data for e{sup +}e{sup -{yields}}D*{sup +}D{sup -}+c.c. and data for D*{yields}D{gamma}. Two solutions are obtained in the interpretation of the cross section lineshape: i) With a relatively large coupling for {psi}D*D determined by experiment, destructive interferences among those charmonium components are required to bring down the overall cross sections, and then account for the cross section lineshape. ii) With a relatively small value for the {psi}D*D coupling based on heavy quark theory, an apparent cross section deficit near threshold is observed, and contributions from other mechanisms are needed. It might imply the presence of an additional resonance X(3900). Meanwhile, we also point out that an enhancement like that could be produced by the D{sub s}*D{sub s}+c.c. open channel effects.

Zhang Yuanjiang [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); Zhao Qiang [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); Theoretical Physics Center for Science Facilities, CAS, Beijing 100049 (China)

2010-04-01T23:59:59.000Z

266

Precipitator Performance Estimation Procedure  

Science Conference Proceedings (OSTI)

Increased availability of data to use with an existing computer model makes it possible for utilities to calculate electrostatic precipitator performance without access to industry databases. This report examines the accuracy of the model and develops procedures to make it a more useful tool for troubleshooting precipitator performance and for selecting the size of a new unit.

1986-12-22T23:59:59.000Z

267

BWR Performance Monitoring  

Science Conference Proceedings (OSTI)

This report presents the status of chemistry control programs and issues impacting performance of North American boiling water reactors (BWRs), as of September 2002. The review of actual BWR plant performance, experiences, and practices surveyed in the report will make it a valuable source document for the upcoming revision of the BWR Water Chemistry Guidelines, scheduled for publication in 2004.

2002-11-27T23:59:59.000Z

268

Crop–Climate Modeling Using Spatial Patterns of Yield and Climate. Part 1: Background and an Example from Australia  

Science Conference Proceedings (OSTI)

A new technique in statistical crop-climate analysis, the direct linking of spatial patterns of crop yield and spatial patterns of climate, is explored. Yield and climate data from networks of crop reporting districts and meteorological stations ...

T. M. L. Wigley; Tu Qipu

1983-11-01T23:59:59.000Z

269

Communicating Building Energy Performance  

NLE Websites -- All DOE Office Websites (Extended Search)

Communicating Building Energy Performance Communicating Building Energy Performance Speaker(s): William Bordass Date: August 26, 2008 - 12:00pm Location: 90-3075 Seminar Host/Point of Contact: Paul Mathew The heightened interest in building energy performance has exposed problems with reporting and benchmarking. Established conventions may no longer suit current needs, and new complications are emerging as national and corporate reporting (e.g. for carbon accounting and trading) begin to impact on the certification and labelling of building energy performance. If we are to achieve genuinely low-energy and carbon buildings, we need to get much better at reporting and benchmarking our intentions and outcomes, and particularly making performance visible and communicating it to all the people concerned. In design, this could help us to reduce the persistent

270

The first steps towards a standardized methodology for CSP electricity yield analysis.  

Science Conference Proceedings (OSTI)

The authors have founded a temporary international core team to prepare a SolarPACES activity aimed at the standardization of a methodology for electricity yield analysis of CSP plants. This core team has drafted a structural framework for a standardized methodology and the standardization process itself. The structural framework has to assure that the standardized methodology is applicable to all conceivable CSP systems, can be used on all levels of the project development process and covers all aspects affecting the electricity yield of CSP plants. Since the development of the standardized methodology is a complex task, the standardization process has been structured in work packages, and numerous international experts covering all aspects of CSP yield analysis have been asked to contribute to this process. These experts have teamed up in an international working group with the objective to develop, document and publish standardized methodologies for CSP yield analysis. This paper summarizes the intended standardization process and presents the structural framework of the methodology for CSP yield analysis.

Wagner, Michael (National Renewable Energy Laboratories, Golden, CO); Hirsch, Tobias (German Aerospace Center (DLR), Institute of Technical Thermodynamics, Stuttgart,Germany); Benitez, Daniel (Flagsol, Cologne, Germany); Eck, Markus (German Aerospace Center (DLR), Institute of Technical Thermodynamics, Stuttgart,Germany); Ho, Clifford Kuofei

2010-08-01T23:59:59.000Z

271

Researchers Demonstrate Microstructure and Charge Yield in Semiconducting Polymers (Fact Sheet), NREL Highlights, Science  

DOE Green Energy (OSTI)

Microstructure determines the yield of free charge in neat semiconducting polymers. Understanding the fundamental photophysics of poly(3-hyxylthiophene) films, and that of conjugated polymers in general, is essential if we are to realize their full potential as low-cost active layers for coal-competitive solar power generation. Yet, the value of one of the most basic photophysical parameters of these materials - the yield of free charges upon photoexcitation of neat films - has remained controversial because of a wide variation between previous measurements. Researchers at the National Renewable Energy Laboratory (NREL) have resolved this controversy by showing that the yield of free charges depends sensitively on the solid-state microstructure of the film. The microstructure was varied systematically through control of the polymers molecular weight and processing conditions, while the charge carrier yield was measured using time-resolved microwave conductivity - a unique technique to which only a few groups in the world have access. The researchers found that the yield of long-lived free charges depends on the co-existence of amorphous and crystalline domains in the polymer, and this behavior was attributed to charge separation at the interface between these two domains of order.

Not Available

2012-02-01T23:59:59.000Z

272

Calculated /alpha/-induced thick target neutron yields and spectra, with comparison to measured data  

Science Conference Proceedings (OSTI)

One component of the neutron source associated with the decay of actinide nuclides in many environments is due to the interaction of decay /alpha/ particles in (/alpha/,n) reactions on low Z nuclides. Measurements of (/alpha/,n) thick target neutron yields and associated neutron spectra have been made for only a few combinations of /alpha/ energy and target nuclide or mixtures of actinide and target nuclides. Calculations of thick target neutron yields and spectra with the SOURCES code require /alpha/-energy-dependent cross sections for (/alpha/,n) reactions, as well as branching fractions leading to the energetically possible levels of the product nuclides. A library of these data has been accumulated for target nuclides of Z /le/ 15 using that available from measurements and from recent GNASH code calculations. SOURCES, assuming neutrons to be emitted isotopically in the center-of-mass system, uses libraries of /alpha/ stopping cross sections, (/alpha/,n) reaction cross reactions, product nuclide level branching fractions, and actinide decay /alpha/ spectra to calculate thick target (/alpha/,n) yields and neutron spectra for homogeneous combinations of nuclides. The code also calculates the thick target yield and angle intergrated neutron spectrum produced by /alpha/-particle beams on targets of homogeneous mixtures of nuclides. Illustrative calculated results are given and comparisons are made with measured thick target yields and spectra. 50 refs., 1 fig., 2 tabs.

Wilson, W.B.; Bozoian, M.; Perry, R.T.

1988-01-01T23:59:59.000Z

273

A GIS/Simulation Framework for Assessing Change in Water Yield over Large Spatial Scales  

DOE Green Energy (OSTI)

Recent legislation to,initiate vegetation management in the Central Sierra hydrologic region of California includes a focus on corresponding changes in water yield. This served as the impetus for developing a combined geographic information system (GIS) and simulation assessment framework. Using the existing vegetation density condition, together with proposed rules for thinning to reduce fire risk, a set of simulation model inputs were generated for examining the impact of the thinning scenario on water yield. The approach allows results to be expressed as the mean and standard deviation of change in water yield for each 1 km2 map cell that is treated. Values for groups of cells are aggregated for typical watershed units using area-weighted averaging. Wet, dry and average precipitation years were simulated over a large region. Where snow plays an important role in hydrologic processes, the simulated change in water yield was less than 0.5% of expected annual runoff for a typical water shed. Such small changes would be undetectable in the field using conventional stream flow analysis. These results suggest that use of water yield increases to help justify forest-thinning activities or offset their cost will be difficult.

Graham, R.; Hargrove, W.W.; Huff, D.D.; Nikolov, N.; Tharp, M.L.

1999-11-13T23:59:59.000Z

274

GROPHECY: GPU Performance Projection From CPU Code Skeletons | Argonne  

NLE Websites -- All DOE Office Websites (Extended Search)

GROPHECY: GPU Performance Projection From CPU Code Skeletons GROPHECY: GPU Performance Projection From CPU Code Skeletons Submitted by mkaczmar on March 23, 2012 - 13:04 Authors: Meng, J., Morozov, V., Kumaran, K., Vishwanath, V., Uram, T. We propose GROPHECY, a GPU performance projection framework that can estimate the performance benefit of GPU acceleration without actual GPU programming or hardware. Users need only to skeletonize pieces of CPU code that are targets for GPU acceleration. Code skeletons are automatically transformed in various ways to mimic tuned GPU codes with characteristics resembling real implementations. The synthesized characteristics are used by an existing analytical model to project GPU performance. The cost and benefit of GPU development can then be estimated according to the transformed code skeleton that yields the best projected performance. With

275

Methods of predicting milk yield in dairy cows-Predictive capabilities of Wood's lactation curve and artificial neural networks (ANNs)  

Science Conference Proceedings (OSTI)

The study is focused on the capability of artificial neural networks to forecast milk yield for both full and standardised lactations. We used a dataset of 108,931 daily milk yields (dataset A) collected from three lactations of dairy cows managed in ... Keywords: 305-d lactation, Artificial neural networks, Daily yields, Dairy cows, Wood's model

Wilhelm Grzesiak; Piotr B?aszczyk; René Lacroix

2006-12-01T23:59:59.000Z

276

Performance Management Plan  

SciTech Connect

This Performance Management Plan describes the approach for accelerating cleanup activities of U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Operations Office (NNSA/NV) Environmental Management (EM) Program. This approach accelerates the reduction of risk at NNSA/NV sites while performing the work responsibly, effectively, and more efficiently. In May 2002, NNSA/NV EM and the Nevada Division of Environmental Protection signed a Letter of Intent formalizing an agreement to pursue accelerated risk reduction and cleanup for activities within the State of Nevada. This Performance Management Plan provides the strategic direction for implementing the Letter of Intent.

IT Corporation, Las Vegas, NV

2002-08-21T23:59:59.000Z

277

Correlation of /sup 239/Pu thermal and fast reactor fission yields with neutron energy  

SciTech Connect

The relative isotopic abundances and the fisson yields for over 40 stable and long-lived fission products from /sup 239/Pu fast fission were evaluated to determine if the data could be correlated with neutron energy. Only mass spectrometric data were used in this study. For some nuclides changes of only a few percent in the relative isotopic abundance or the fission yields over the energy range of thermal to 1 MeV are easily discernable and significant; for others the data are too sparse and scattered to obtain a good correlation. The neutron energy index usedin this study is the /sup 150/Nd//sup 143/Nd isotopic ratio. The results of this correlation study compared to the US Evaluated Nuclear Data File (ENDF) fast fission yield compilation. Several discrepancies are noted and suggestions for future work are presented.

Maeck, W.J.

1981-10-01T23:59:59.000Z

278

Microsoft PowerPoint - 3-07_Williams_Mobilization of High Yield Sludges.pptm  

NLE Websites -- All DOE Office Websites (Extended Search)

Storage, Mobilization, And Retrieval Of Storage, Mobilization, And Retrieval Of Very High Yield Strength Sludges EM Waste Processing Technical Exchange Atlanta November 16-18 2010 Martin Williams Vice President Advanced Process Systems NuVision Engineering 184B Rolling Hill Rd Mooresville NC 28117 USA Print Close 2 Storage, Mobilization, and Retrieval of Very High Yield Strength Sludges Sellafield Site in the UK Magnox Storage Pond *Constructed in 1940's *Major D&D project Print Close 3 Storage, Mobilization, and Retrieval of Very High Yield Strength Sludges Magnox Sludge *Up to 1200m3 arising from the corrosion of magnesium alloy clad Magnox reactor fuel in storage primarily magnesium and uranium corrosion products *small percentage of un-corroded Magnox metal *fission and activation products and their corrosion products

279

Hydropower Upgrades to Yield Added Generation at Average Costs Less Than 4  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hydropower Upgrades to Yield Added Generation at Average Costs Less Hydropower Upgrades to Yield Added Generation at Average Costs Less Than 4 cents per kWh - Without New Dams Hydropower Upgrades to Yield Added Generation at Average Costs Less Than 4 cents per kWh - Without New Dams November 4, 2009 - 12:00am Addthis WASHINGTON, DC - U.S. Energy Secretary Steven Chu today announced up to $30.6 million in Recovery Act funding for the selection of seven hydropower projects that modernize hydropower infrastructure by increasing efficiency and reducing environmental impacts at existing facilities. The expanded hydro generation projects have estimated incremental costs of less than 4 cents per kWh on average. The selections announced today will deploy innovative technologies such as high-efficiency, fish-friendly turbines, improved water intakes, and

280

Research Article TMV ( Sv) 7 – A high yielding cosmopolitan sesame variety  

E-Print Network (OSTI)

The sesame culture TVS 0039 is a hybrid derivative of Si 250 x ES 22. It is an high yielding sesame variety with brown colour seed. It matures in 85- 90 days. TVS 0039 has recorded a mean yield of 737 kg/ha which is 12.8, 26.9 and 14.0 % superior to TMV 3, VRI (Sv) 1 and VRI(Sv 2), respectively under rainfed condition. During summer season, the culture registered an average yield of 781 kg/ha which is 25.6, 20.5, 34.3 and 27.8 % increase over VRI (Sv) 1, VRI (Sv 2), TMV 4 and TMV 6 respectively. The seeds are brown coloured with an oil content of 51.0 per cent. The culture is also tolerant to root rot disease.

V. Manoharan; M. Vaithiyalingan; M. Sudha; G. Rangaraju; R. Vishnupriya; P. Renugadevi; S. Jebaraj

2010-01-01T23:59:59.000Z

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


281

Effect of neutron composition and excitation energy on the primary fragment yield distribution in multifragmentation reaction  

E-Print Network (OSTI)

The isotopic properties of the primary and secondary fragment yield distribution in the multifragmentation of $^{58}$Fe + $^{58}$Ni and $^{58}$Fe + $^{58}$Fe reactions are studied with respect to the $^{58}$Ni + $^{58}$Ni reaction at 30, 40 and 47 MeV/nucleon. The reduced neutron and proton densities from the observed fragment yield distribution show primary fragment yield distribution to undergo strongly secondary de-excitations. The effect is small at the lowest excitation energy and smallest neutron-to-proton ratio and becomes large at higher excitation energies and higher neutron-to-proton ratio. The symmetry energy of the primary fragments deduced from the reduced neutron density is significantly lower than that for the normal nuclei at saturation density, indicating that the fragments are highly excited and formed at a reduced density. Furthermore, the symmetry energy is also observed to decrease slowly with increasing excitation energy. The observed effect is explained using the statistical multifragmentation model.

D. V. Shetty; A. S. Botvina; S. J. Yennello; G. A. Souliotis; E. Bell; A. Keksis

2004-09-23T23:59:59.000Z

282

YIELD STRENGTH PREDICTION FOR RAPID AGE-HARDENING HEAT TREATMENT OF ALUMINUM ALLOYS  

Science Conference Proceedings (OSTI)

A constitutive model has been developed to predict the yield strength aging curves for aluminum casting alloys during non-isothermal age-hardening processes. The model provides the specific relationship between the process variables and yield strength. Several aging heat treatment scenarios have been investigated using the proposed model, including two-step aging recipes. Two-step aging heat treatments involve a low temperature regime to promote nucleation of secondary phases and a second step at higher temperature for the growth of the secondary phases. The predicted results show that yield strength of approximately 300MPa might be obtained in shorter aging time, of approximately 30 minutes. Thus, better mechanical properties can be obtained by optimizing the time-temperature schedules for the precipitation hardening process of heat treatable aluminum alloys.

Yin, Hebi [ORNL; Sabau, Adrian S [ORNL; Ludtka, Gerard Michael [ORNL; Skszek, Timothy [Vehma International of American, Inc.; Niu, X [Magna Cosma International, Promatek Research Centre

2013-01-01T23:59:59.000Z

283

In-situ determination of energy species yields of intense particle beams  

DOE Patents (OSTI)

Objects of the present invention are provided for a particle beam having a full energy component at least as great as 25 keV, which is directed onto a beamstop target, such that Rutherford backscattering, preferably near-surface backscattering occurs. The geometry, material composition and impurity concentration of the beam stop are predetermined, using any suitable conventional technique. The energy-yield characteristic response of backscattered particles is measured over a range of angles using a fast ion electrostatic analyzer having a microchannel plate array at its focal plane. The knee of the resulting yield curve, on a plot of yield versus energy, is analyzed to determine the energy species components of various beam particles having the same mass.

Kugel, H.W.; Kaita, R.

1983-09-26T23:59:59.000Z

284

Effects of residues from municipal solid waste landfill on corn yield and heavy metal content  

Science Conference Proceedings (OSTI)

The effects of residues from municipal solid waste landfill, Khon Kaen Municipality, Thailand, on corn (Zea mays L.) yield and heavy metal content were studied. Field experiments with randomized complete block design with five treatments (0, 20, 40, 60 and 80% v/v of residues and soil) and four replications were carried out. Corn yield and heavy metal contents in corn grain were analyzed. Corn yield increased by 50, 72, 85 and 71% at 20, 40, 60 and 80% treatments as compared to the control, respectively. All heavy metals content, except cadmium, nickel and zinc, in corn grain were not significantly different from the control. Arsenic, cadmium and zinc in corn grain were strongly positively correlated with concentrations in soil. The heavy metal content in corn grain was within regulated limits for human consumption.

Prabpai, S. [Suphan Buri Campus Establishment Project, Kasetsart University, 50 U Floor, Administrative Building, Paholyothin Road, Jatujak, Bangkok 10900 (Thailand)], E-mail: s.prabpai@hotmail.com; Charerntanyarak, L. [Department of Epidemiology, Faculty of Public Health, Khon Kaen University, Khon Kaen 40002 (Thailand)], E-mail: lertchai@kku.ac.th; Siri, B. [Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002 (Thailand)], E-mail: boonmee@kku.ac.th; Moore, M.R. [The University of Queensland, The National Research Center for Environmental Toxicology, 39 Kessels Road, Coopers Plans, Brisbane, Queensland 4108 (Australia)], E-mail: m.moore@uq.edu.au; Noller, Barry N. [The University of Queensland, Centre for Mined Land Rehabilitation, Brisbane, Queensland 4072 (Australia)], E-mail: b.noller@uq.edu.au

2009-08-15T23:59:59.000Z

285

High Performance Sustainable Buildings  

NLE Websites -- All DOE Office Websites (Extended Search)

become a High Performance Sustainable Building in 2013. On the former County landfill, a photovoltaic array field uses solar energy to provide power for Los Alamos County and the...

286

ARM - 2009 Performance Metrics  

NLE Websites -- All DOE Office Websites (Extended Search)

9 Performance Metrics 9 Performance Metrics Science Research Themes Research Highlights Journal Articles Collaborations Atmospheric System Research (ASR) ARM Science Team Meetings User Meetings Annual Meetings of the Atmospheric System Research (ASR) Science Team and Fall Working Groups Accomplishments Read about the 20 years of accomplishments (PDF, 696KB) from the ARM Program and user facility. Performance Metrics ASR Metrics 2009 2008 2007 2006 2009 Performance Metrics Improve Climate Models - Develop a coupled climate model with fully interactive carbon and sulfur cycles, as well as dynamic vegetation to enable simulations of aerosol effects, carbon chemistry, and carbon sequestration by the land surface and oceans and the interactions between the carbon cycle and climate. In fiscal year 2009: Provide improved climate

287

Buildings Performance Metrics Terminology  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy's Commercial Building Initiative Page 1 Energy's Commercial Building Initiative Page 1 January 2009 Buildings Performance Metrics Terminology To clarify how the terms are used in the Department of Energy's Performance Metrics Research Project, a list of terms related to performance metrics are defined and include examples and comments. Visit www.commercialbuildings.energy.gov/performance_metrics.html to learn more. Baseline - a standard reference case used as a basis for comparison Examples: a simulation model of an ASHRAE 90.1 compliant building, control building, measurement of energy consumption prior to application of an energy conservation measure Comments: Establishing a clearly defined baseline very important and is often the most difficult task. Defining a repeatable baseline is essential if the work is to be compared to results of other

288

ARM - 2007 Performance Metrics  

NLE Websites -- All DOE Office Websites (Extended Search)

7 Performance Metrics 7 Performance Metrics Science Research Themes Research Highlights Journal Articles Collaborations Atmospheric System Research (ASR) ARM Science Team Meetings User Meetings Annual Meetings of the Atmospheric System Research (ASR) Science Team and Fall Working Groups Accomplishments Read about the 20 years of accomplishments (PDF, 696KB) from the ARM Program and user facility. Performance Metrics ASR Metrics 2009 2008 2007 2006 2007 Performance Metrics A Single Column Model (SCM) represents the evolution of the atmosphere in a single grid box of a Global Climate Model (GCM). This illustration represents the observing strategy of ARM, which takes continuous atmospheric observations from fixed sites in three climate regimes around the world. A Single Column Model (SCM) represents the evolution of the atmosphere in a

289

HVAC Installed Performance  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HVAC Installed Performance HVAC Installed Performance ESI, Tim Hanes Context * The building envelope has historically been the focus in residential homes. * The largest consumer of energy in residential homes is typically the HVAC system. * Testing the performance of the HVAC system has not been pursued to its full potential. Technical Approach * Currently very little performance testing is being done to the HVAC system. * The only way to know if a HVAC system is operating correctly is to measure the Btu/h. * This should be done at the equipment and at the the system. Recommended Guidance * Training of HVAC technicians, installers, and salespeople is a must. * If only the technician is trained than implementing the change will not happen. * Public awareness of proper installation and its

290

Performance and Optimization  

NLE Websites -- All DOE Office Websites (Extended Search)

Performance and Performance and Optimization Performance and Optimization Benchmarking Software on Hopper and Carver PURPOSE Test the performance impact of multithreading with representative public domain software including blastn, blastp, rpsblast, hmmsearch, usearch. Run on Hopper (24 cores/node) and Carver (8 cores/node) with different combinations of the number of tasks and threads. Provide useful set of parameters to maximize throughput PROGRAMS TESTED BLAST+ programs (blastn, blastp, rpsblast) version 2.2.26 usearch verison 5.2.32 hmmsearch version 3.0 DATASETS usearch: a collection of protein sequences (~900MB) against a reference "udb" (~900MB) blastn Query: a collection of nucleotide sequences from NCBI Microbial database from ftp://ftp.ncbi.nlm.nih.gov/refseq/release/microbial/ (34,154

291

PERFORMANCE STATISTICS WEIGHTS  

NLE Websites -- All DOE Office Websites (Extended Search)

Height: 56.9 inches Ground Clearance: 5.5 inches Performance Goal: 5.0 inches TIRES Tire Mfg: Michelin Tire Model: MXV4 S8 Tire Size: P21560R16 Tire Pressure FR: 3232 psi...

292

PERFORMANCE STATISTICS WEIGHTS  

NLE Websites -- All DOE Office Websites (Extended Search)

Height: 69.7 inches Ground Clearance: 6.0 inches Performance Goal: 5.0 inches TIRES Tire Mfg: Goodyear Tire Model: Wrangler ST Tire Size: P23575R16 Tire Pressure FR: 3535...

293

*-MINIMAX performance in backgammon  

Science Conference Proceedings (OSTI)

This paper presents the first performance results for Ballard's *-Minimax algorithms applied to a real–world domain: backgammon. It is shown that with effective move ordering and probing the Star2 algorithm considerably outperforms Expectimax. ...

Thomas Hauk; Michael Buro; Jonathan Schaeffer

2004-07-01T23:59:59.000Z

294

Photovoltaic Cell Performance  

Energy.gov (U.S. Department of Energy (DOE))

Photovoltaic (PV), or solar cells use the energy in sunlight to produce electricity. However, the amount of electricity produced depends on the quality of the light available and the performance of...

295

High Performance Computing  

NLE Websites -- All DOE Office Websites (Extended Search)

High Performance Computing Managing world-class supercomputing centers Read caption + The Powerwall is used by LANL scientists to view objects and processes in 3D. 13:01 Gary...

296

Performance profiles style sheet  

U.S. Energy Information Administration (EIA)

investment throughout most of this period compared with the 1990s. Title: Performance profiles style sheet Author: Greg Filas Created Date: 12/23/2010 7:12:57 PM ...

297

ALS superbend magnet performance  

E-Print Network (OSTI)

ALS Superbend Magnet Performance S. Marks, J. Zbasnik, W.the Advanced Light Source (ALS), with the fourth magnet as ahe Advanced Light Source (ALS) at the Lawrence Berkeley

2001-01-01T23:59:59.000Z

298

Whole Window Performance Criteria  

NLE Websites -- All DOE Office Websites (Extended Search)

Performance Criteria This graph shows the relationship between whole window U-factor and center of glass U-factor (U-cog) for two window types for two generic frames from the...

299

Performance-based Contracting  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Performance-based Contracting Performance-based Contracting [Reference: FAR 37.6; DEAR 970.1001] Overview This section provides guidance and instruction for the development and administration of Performance-Based Contracting concepts for the Department's management and operating contracts, and other major operating contracts, as appropriate. Background In 1997, the Department published a final rule (62 FR 34842) which implemented a number of recommendations principally in areas relating to the acquisition processes of its management and operating contracts. One of these recommendations involved the adoption of performance-based contracting concepts. Since the beginning of its contract reform initiatives, the Department has tested a number of approaches to conform its use of fee to such concepts. A core consideration in the application of

300

Annual Performance Report FY 2005 Annual Performance Plan FY...  

NLE Websites -- All DOE Office Websites (Extended Search)

Performance Report FY 2005 Annual Performance Plan FY 2006 Iam pleased to present the Office of Inspector General's combined Fiscal Year 2005 Annual Performance Report and...

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


301

Annual Performance Report FY 2010 Annual Performance Plan FY...  

NLE Websites -- All DOE Office Websites (Extended Search)

Performance Report FY 2010 Annual Performance Plan FY 2011 I am pleased to submit the Office of Inspector General's combined Fiscal Year 2010 Annual Performance Report and...

302

Wheat Yield Functions for Analysis of Land-Use Change in China  

E-Print Network (OSTI)

CERES-Wheat, a dynamic process crop growth model is specified and validated for eight sites in the major wheat-growing regions of China. Crop model results are then used to test functional forms for yield response to nitrogen fertilizer, irrigation water, temperature, and precipitation. The resulting functions are designed to be used in a linked biophysical-economic model of land-use and land-cover change. Variables explaining a significant proportion of simulated yield variance are nitrogen, irrigation water, and precipitation; temperature was not a sig...

Chynthia Rosenzweig; Ana Iglesias; Yanhua Liu; Walter Baethgen (baethgen+aea-undp. Org. Uy; James W. Jones; Gordon J. Macdonald

1998-01-01T23:59:59.000Z

303

Optimizing energy yields in black locust through genetic selection: final report  

DOE Green Energy (OSTI)

The purpose of this work was to assess the magnitude of improvement in biomass yield of black locust possible through breeding, and to determine methods for efficiently capturing the yield improvement achievable from selective breeding. To meet this overall objective, six tasks were undertaken to determine: (1) the amount and geographic pattern of natural genetic variation, (2) the mating system of the species, (3) quantitative genetic parameters of relevant traits, (4) the relationship between nitrogen fixation and growth in black locust, (5) the viability of mass vegetative propagation, and (6) the feasibility of improvement through genetic transformation.

Bongarten, B.C.; Merkle, S.A. [Georgia Univ., Athens, GA (United States). School of Forest Resources

1996-10-01T23:59:59.000Z

304

Yield Improvement and Energy Savings Uing Phosphonates as Additives in Kraft pulping  

DOE Green Energy (OSTI)

Project Objective: Develop a commercially viable modification to the Kraft process resulting in energy savings, increased yield and improved bleachability. Evaluate the feasibility of this technology across a spectrum of wood species used in North America. Develop detailed fundamental understanding of the mechanism by which phosphonates improve KAPPA number and yield. Evaluate the North American market potential for the use of phosphonates in the Kraft pulping process. Examine determinants of customer perceived value and explore organizational and operational factors influencing attitudes and behaviors. Provide an economic feasibility assessment for the supply chain, both suppliers (chemical supply companies) and buyers (Kraft mills). Provide background to most effectively transfer this new technology to commercial mills.

Ulrike W. Tschirner; Timothy Smith

2007-03-31T23:59:59.000Z

305

Leptonic CP Phase in {nu}{sub {mu}}{yields}{nu}{sub {mu}} Oscillations  

Science Conference Proceedings (OSTI)

In the case of large 1-3 mixing angle as sin{sup 2} 2{theta}{sub 13}{>=}0.03, we investigate the possibility for measuring the leptonic CP phase by using only {nu}{sub {mu}}{yields}{nu}{sub {mu}} oscillations independently of {nu}{sub {mu}}{yields}{nu}{sub e} oscillations. As the result, we find that the CP phase can be measured best around the energy E = 0.43 GeV and the baseline length L = 5000 km without depending on the uncertainties of other parameters too much. In this region, the CP phase effect remains even after averaging over neutrino energy.

Kimura, Keiichi; Yoshikawa, Tadashi [Department of Physics, Nagoya University, Nagoya, 464-8602 (Japan); Takamura, Akira [Department of Mathematics, Toyota National College of Technology Eisei-cho 2-1, Toyota-shi, 471-8525 (Japan)

2008-02-21T23:59:59.000Z

306

Effects of temperature and pressure on the hydroretorting yields of three eastern oil shales  

DOE Green Energy (OSTI)

Hydroretorting has been demonstrated as a high yield approach for processing Eastern US oil shales. HYCRUDE and IGT are conducting research under a cooperative agreement with DOE to determine the hydroretorting characteristics of Eastern oil shales. The results of hydroretorting shales from Indiana, Alabama, and Tennessee in 100-gram batch tests conducted in the Hydroretorting Assay Unit (HAU) are presented in this paper. Oil yields as high as 218% of the Fischer Assay and carbon conversions up to 90%, 79%, and 80% for Indiana, Alabama, and Tennessee shales, respectively, were achieved. 8 refs., 11 figs., 2 tabs.

Roberts, M.J.; Punwani, D.V.; Hu, W.C.S.; Rex, R.C. Jr.

1986-11-01T23:59:59.000Z

307

ORECCL - Summary of a national database on energy crop landbase, yields, and costs  

DOE Green Energy (OSTI)

The Biofuels Feedstock Development Program at Oak Ridge National Laboratory has developed a county-level database on energy crops-the Oak Ridge Energy Crop County-Level database (RECCL). This database encompasses all U.S. counties and provides easy access to energy crop information specific to a state or county. The database contains predictions of energy crop yields and farmgate prices along with county-level data on the acreage of land suitable for energy crop production. This paper describes the database and presents state-level summary statistics on land suitable for energy crop production and average predicted yields and farmgate prices.

Graham, R.L.; Allison, L.J. [Oak Ridge National Lab., TN (United States); Becker, D.A. [Science Applications International Corp., Oak Ridge, TN (United States)

1997-07-01T23:59:59.000Z

308

High-yield hydrogen production by catalytic gasification of coal or biomass  

DOE Green Energy (OSTI)

Gasification of coal or wood, catalyzed by soluble metallic cations to maximize reaction rates and hydrogen yields, offers a potential for large-scale, economical hydrogen production with near-commercial technology. With optimum reaction conditions and catalysts, product gas rich in both hydrogen and methane can be used in fuel cells to produce electricity at efficiencies nearly double those of conventional power plant. If plantation silvaculture techniques can produce wood at a raw energy cost competitive with coal, further enhancement of product gas yields may be possible, with zero net contribution of CO{sub 2} to the atmosphere.

Hauserman, W.B.

1992-01-01T23:59:59.000Z

309

High Performance Window Attachments  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

High Performance Window High Performance Window Attachments D. Charlie Curcija Lawrence Berkeley National Laboratory dccurcija@lbl.gov 510-495-2602 April 4, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Impact of Project: * Motivate manufacturers to make improvements in Window systems U-Factors, SHGC and daylighting utilization * Increase awareness of benefits from energy efficient window attachments Problem Statement: * A wide range of residential window attachments are available, but they have widely unknown

310

Technology Performance Exchange  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Technology Performance Exchange Technology Performance Exchange TDM - Jason Koman (BTO) TDM - Dave Catarious (FEMP) William Livingood National Renewable Energy Laboratory William.Livingood@nrel.gov 303-384-7490 April 2, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem: Perceived fiscal risk associated with the installation of unfamiliar technologies impedes adoption rates for cost-effective, energy-saving products. Impact of Project: Enable end users to quickly and

311

Curating performance installations  

Science Conference Proceedings (OSTI)

In this paper we will examine the use of the digital screen display as a primary form of accessing information within the museum context. We will argue that this mode of dissemination, achieved primarily through a Graphic User Interface (GUI) though ... Keywords: GUI, becoming, being, content, dissemination, exhibition, experience, form, information, installation, interactivity, interpretation, materiality, museum, nothing, objecthood, performance, performative, re-enactment, screen, technology, trajectory

Daniel Felstead; Kate Bailey

2011-07-01T23:59:59.000Z

312

Chemical Vapor Deposition-Derived Graphene with Electrical Performance of Exfoliated Graphene  

E-Print Network (OSTI)

-effect mobility. These results confirm the possibility of achieving high-performance graphene devices based electrical performance comparable to that of high-quality exfoliated graphene. We grow single-layer graphene by more conventional CVD methods,1-3 which yield continuous films of polycrystal- line graphene with grain

Kim, Philip

313

Repository performance confirmation.  

SciTech Connect

Repository performance confirmation links the technical bases of repository science and societal acceptance. This paper explores the myriad aspects of what has been labeled performance confirmation in U.S. programs, which involves monitoring as a collection of distinct activities combining technical and social significance in radioactive waste management. This paper is divided into four parts: (1) A distinction is drawn between performance confirmation monitoring and other testing and monitoring objectives; (2) A case study illustrates confirmation activities integrated within a long-term testing and monitoring strategy for Yucca Mountain; (3) A case study reviews compliance monitoring developed and implemented for the Waste Isolation Pilot Plant; and (4) An approach for developing, evaluating and implementing the next generation of performance confirmation monitoring is presented. International interest in repository monitoring is exhibited by the European Commission Seventh Framework Programme 'Monitoring Developments for Safe Repository Operation and Staged Closure' (MoDeRn) Project. The MoDeRn partners are considering the role of monitoring in a phased approach to the geological disposal of radioactive waste. As repository plans advance in different countries, the need to consider monitoring strategies within a controlled framework has become more apparent. The MoDeRn project pulls together technical and societal experts to assimilate a common understanding of a process that could be followed to develop a monitoring program. A fundamental consideration is the differentiation of confirmation monitoring from the many other testing and monitoring activities. Recently, the license application for Yucca Mountain provided a case study including a technical process for meeting regulatory requirements to confirm repository performance as well as considerations related to the preservation of retrievability. The performance confirmation plan developed as part of the Yucca Mountain license application identified a broad suite of monitoring activities. A revision of the plan was expected to winnow the number of activities down to a manageable size. As a result, an objective process for the next stage of performance confirmation planning was developed as an integral part of an overarching long-term testing and monitoring strategy. The Waste Isolation Pilot Plant compliance monitoring program at once reflects its importance to stakeholders while demonstrating adequate understanding of relevant monitoring parameters. The compliance criteria were stated by regulation and are currently monitored as part of the regulatory rule for disposal. At the outset, the screening practice and parameter selection were not predicated on a direct or indirect correlation to system performance metrics, as was the case for Yucca Mountain. Later on, correlation to performance was established, and the Waste Isolation Pilot Plant continues to monitor ten parameters originally identified in the compliance certification documentation. The monitoring program has proven to be effective for the technical intentions and societal or public assurance. The experience with performance confirmation in the license application process for Yucca Mountain helped identify an objective, quantitative methodology for this purpose. Revision of the existing plan would be based on findings of the total system performance assessment. Identification and prioritization of confirmation activities would then derive from performance metrics associated with performance assessment. Given the understanding of repository performance confirmation, as reviewed in this paper, it is evident that the performance confirmation program for the Yucca Mountain project could be readily re-engaged if licensing activities resumed.

Hansen, Francis D.

2011-09-01T23:59:59.000Z

314

The MicroGrid: Using Emulation to Predict Application Performance in Diverse Grid Network Environments  

E-Print Network (OSTI)

Improvements in networking and middleware technology are enabling large-scale grids that aggregate resources over wide-area networks to support applications at unprecedented levels of scale and performance. Unfortunately, existing middleware and tools can not in general inform a user as to the suitability of a given grid topology for a specific grid application. Instead, users generally develop ad hoc performance models for mapping their applications to resource and network topologies. Because application behavior alone is complex, and resource and network behavior further complicate the picture, users are typically reduced to nearly blind experimentation to discover how to deploy their application in the new grid environment. Only after the fact can a user discovers if the match was a good one. Further, even after finding a desirable configuration, there is no basis on which to determine if a much better configuration exists. We present a richer methodology for evaluating grid software and diverse grid environments based on the MicroGrid grid emulator. With the MicroGrid, users, grid researchers, or grid operators can define and emulate arbitrary collections of resources and networks. This allows study of an existing grid testbed under controlled conditions or even to study the efficacy of higher performance environments than are available today. Further, the MicroGrid supports direct execution of grid applications unchanged. These application can be written with MPI, C, C++, Perl, and/or Python and use the Globus middleware. This enables detailed and accurate study of application behavior.

Huaxia Xia; Holly Dail Ý; Henri Casanova *ý; Andrew Chien

2004-01-01T23:59:59.000Z

315

Performance Characteristics of an Adaptive Mesh RefinementCalculation on Scalar and Vector Platforms  

SciTech Connect

Adaptive mesh refinement (AMR) is a powerful technique thatreduces the resources necessary to solve otherwise in-tractable problemsin computational science. The AMR strategy solves the problem on arelatively coarse grid, and dynamically refines it in regions requiringhigher resolution. However, AMR codes tend to be far more complicatedthan their uniform grid counterparts due to the software infrastructurenecessary to dynamically manage the hierarchical grid framework. Despitethis complexity, it is generally believed that future multi-scaleapplications will increasingly rely on adaptive methods to study problemsat unprecedented scale and resolution. Recently, a new generation ofparallel-vector architectures have become available that promise toachieve extremely high sustained performance for a wide range ofapplications, and are the foundation of many leadership-class computingsystems worldwide. It is therefore imperative to understand the tradeoffsbetween conventional scalar and parallel-vector platforms for solvingAMR-based calculations. In this paper, we examine the HyperCLaw AMRframework to compare and contrast performance on the Cray X1E, IBM Power3and Power5, and SGI Altix. To the best of our knowledge, this is thefirst work that investigates and characterizes the performance of an AMRcalculation on modern parallel-vector systems.

Welcome, Michael; Rendleman, Charles; Oliker, Leonid; Biswas, Rupak

2006-01-31T23:59:59.000Z

316

Annual Performance Report FY 2011 Annual Performance Plan FY...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Annual Performance Report FY 2011 Annual Performance Plan FY 2012 2 FY 2011 OIG Performance Results The OIG measures its performance against long-term and annual goals set forth...

317

Effective System Performance (ESP) Benchmark  

NLE Websites -- All DOE Office Websites (Extended Search)

System Performance (ESP) Benchmark It is now generally recognized in the high performance computing community that peak performance does not adequately predict the usefulness...

318

Instrument performance evaluation  

Science Conference Proceedings (OSTI)

Deficiencies exist in both the performance and the quality of health physics instruments. Recognizing the implications of such deficiencies for the protection of workers and the public, in the early 1980s the DOE and the NRC encouraged the development of a performance standard and established a program to test a series of instruments against criteria in the standard. The purpose of the testing was to establish the practicality of the criteria in the standard, to determine the performance of a cross section of available instruments, and to establish a testing capability. Over 100 instruments were tested, resulting in a practical standard and an understanding of the deficiencies in available instruments. In parallel with the instrument testing, a value-impact study clearly established the benefits of implementing a formal testing program. An ad hoc committee also met several times to establish recommendations for the voluntary implementation of a testing program based on the studies and the performance standard. For several reasons, a formal program did not materialize. Ongoing tests and studies have supported the development of specific instruments and have helped specific clients understand the performance of their instruments. The purpose of this presentation is to trace the history of instrument testing to date and suggest the benefits of a centralized formal program.

Swinth, K.L.

1993-03-01T23:59:59.000Z

319

Strain rate, temperature and representative length scale influence on plasticity and yield stress in copper  

SciTech Connect

Shock compression of materials constitutes a complex process involving high strain rates, elevated temperatures and compression of the lattice. Materials properties are greatly affected by temperature, the representative length scale and the strain rate of the deformation. Experimentally, it is difficult to study the dynamic microscopic mechanisms that affect materials properties following high intensity shock loading, but they can be investigated using molecular dynamics (MD) simulations. Moreover, MD allows a better control over some parameters. We are using MD simulations to study the effect of the strain rate, representative length scale and temperature on the properties of metals during compression. A half-million-atom Cu sample is subjected to strain rates ranging from 10{sup 7} s{sup -1} to 10{sup 12} s{sup -1} at different temperatures ranging from 50K to 1500K. Single crystals as well as polycrystals are investigated. Plasticity mechanisms as well as the evolution of the micro- and macro-yield stress are observed. Our results show that the yield stress increases with increasing strain rate and decreasing temperature. We also show that the strain rate at which the transition between constant and increasing yield stress as a function of the temperature occurs increases with increasing temperature. Calculations at different grain sizes will give an insight into the grain size effect on the plasticity mechanisms and the yield stress.

Dupont, Virginie [Los Alamos National Laboratory; Germann, Timothy C [Los Alamos National Laboratory

2011-01-18T23:59:59.000Z

320

Yield effects on bale density and time required for commercial harvesting and baling of switchgrass  

DOE Green Energy (OSTI)

The objective of this study was to obtain mowing, raking and baling data for switchgrass yields to determine whether economic projections for harvesting and baling are valid for switchgrass as an energy crop. The study demonstrated that data for haymaking cannot be extrapolated to switchgrass.

Bransby, D.; Sladden, S. [Auburn Univ., AL (United States). Dept. of Agronomy and Soils; Downing, M. [Oak Ridge National Lab., TN (United States)

1996-12-31T23:59:59.000Z

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


321

Predicting Large-Area Corn Yield with a Weighted Palmer Z-Index  

Science Conference Proceedings (OSTI)

Palmer's z-index, calculated to reflect only the planting-emergence and anthesis-grainfill stages of the growing season, is related with detrended corn yields to produce a predictive model for Illinois corn production. The model is evaluated to ...

Scott A. Isard; William E. Easterling

1989-03-01T23:59:59.000Z

322

Artificial neural networks to predict corn yield from Compact Airborne Spectrographic Imager data  

Science Conference Proceedings (OSTI)

In the light of recent advances in spectral imaging technology, highly flexible modeling methods must be developed to estimate various soil and crop parameters for precision farming from airborne hyperspectral imagery. The potential of artificial neural ... Keywords: Artificial neural networks, CASI, Corn, Crop yield, Hyperspectral remote sensing, Precision agriculture

Y. Uno; S. O. Prasher; R. Lacroix; P. K. Goel; Y. Karimi; A. Viau; R. M. Patel

2005-05-01T23:59:59.000Z

323

Stillage recycling: effect on ethanol yield, energy consumption, and stillage quality  

SciTech Connect

Grain sorghum thin stillage was recycled as cooking water in ethanol production experiments using bench- and pilot-scale systems. When stillage replaced 50 to 75% of the cooking water, large increases occurred in solids content, COD, and EC of resulting stillage. Ethanol yield, energy and water use were not affected.

Sweeten, J.M.; Coble, C.G.

1983-12-01T23:59:59.000Z

324

Evaluation of yield regulation options for primary forest in Tapajos National Forest, Brazil  

E-Print Network (OSTI)

Evaluation of yield regulation options for primary forest in Tapajo´s National Forest, Brazil PaulJN, Scotland b Instituto do Homem e Meio Ambiente da Amazo^nia (IMAZON), CEP 66060-160 Bele´m, Brazil c Projeto Dendrogene, EMBRAPA, CEP 66095-100 Bele´m, Brazil Received 23 November 2005; received

325

Yield ResponsZs to Time of Burning in the Kansas Flint Hills1  

E-Print Network (OSTI)

Yield ResponsZs to Time of Burning in the Kansas Flint Hills1 CLENTON E. OWENSBY and KLING L Agricultural Experiment Station, Manhattan. Grazing managem,ent in the Kansas Flint Hills has tradition- ally, about 58 inches annually in central Louisiana and about 32 inches in the Flint Hills. Mc

Owensby, Clenton E.

326

Effect of reaction pressure on octane number and reformate and hydrogen yields in catalytic reforming  

Science Conference Proceedings (OSTI)

The effect of reaction pressure in catalytic reforming was studied in a pilot reactor with a commercial Pt-Re/Al{sub 2}O{sub 3} reforming catalyst and a hydrotreated naphtha from a North Sea crude. Reformate and hydrogen yields, research octane numbers (RON), and reformate composition at reactor pressures in the range of 12--25 bar were measured as a function of temperature in the range of 95--105 RON. Reformate and hydrogen yields increased as the pressure range. For the lower reaction pressures the hydrogen yields increased with increasing severity, but for the higher pressures the hydrogen yields started to decline above certain severities. RON was linearly dependent on the concentration of aromatics in the reformate, although the selectivity toward aromatics depends on both pressure and temperature. Less hydro dealkylation of C{sub 8} and heavier aromatics to benzene and toluene resulted in a shift toward xylenes and heavier aromatic components when pressure was lowered. Variations in the degree of paraffin isomerization did not influence RON significantly at those severities.

Moljord, K.; Hellenes, H.G.; Hoff, A.; Tanem, I. [SINTEF Applied Chemistry, Trondheim (Norway); Grande, K. [Statoil Research Centre, Trondheim (Norway); Holmen, A. [Univ. of Trondheim (Norway). Dept. Industrial Chemistry

1996-01-01T23:59:59.000Z

327

Evaluation of nanoparticle-immobilized cellulase for improved ethanol yield in simultaneous saccharification and fermentation reactions  

SciTech Connect

Ethanol yields were 2.1 (P = 0.06) to 2.3 (P = 0.01) times higher in simultaneous saccharification and fermentation (SSF) reactions of microcrystalline cellulose when cellulase was physisorbed on silica nanoparticles compared to enzyme in solution. In SSF reactions, cellulose is hydrolyzed to glucose by cellulase while yeast simultaneously ferments glucose to ethanol. The 35 C temperature and the presence of ethanol in SSF reactions are not optimal conditions for cellulase. Immobilization onto solid supports can stabilize the enzyme and promote activity at non-optimum reaction conditions. Mock SSF reactions that did not contain yeast were used to measure saccharification products and identify the mechanism for the improved ethanol yield using immobilized cellulase. Cellulase adsorbed to 40 nm silica nanoparticles produced 1.6 times (P = 0.01) more glucose than cellulase in solution in 96 h at pH 4.8 and 35 C. There was no significant accumulation (<250 {mu}g) of soluble cellooligomers in either the solution or immobilized enzyme reactions. This suggests that the mechanism for the immobilized enzyme's improved glucose yield compared to solution enzyme is the increased conversion of insoluble cellulose hydrolysis products to soluble cellooligomers at 35 C and in the presence of ethanol. The results show that silica-immobilized cellulase can be used to produce increased ethanol yields in the conversion of lignocellulosic materials by SSF.

Lupoi, Jason; Smith, Emily

2011-12-01T23:59:59.000Z

328

Method and apparatus for increasing the durability and yield of thin film photovoltaic devices  

DOE Patents (OSTI)

Thin film photovoltaic cells having a pair of semiconductor layers between an opaque and a transparent electrical contact are manufactured in a method which includes the step of scanning one of the semiconductor layers to determine the location of any possible shorting defect. Upon the detection of such defect, the defect is eliminated to increase the durability and yield of the photovoltaic device.

Phillips, James E. (Newark, DE); Lasswell, Patrick G. (Newark, DE)

1987-01-01T23:59:59.000Z

329

Develop a field grid system for yield mapping and machine control. Final report, Invention 544  

SciTech Connect

The objective of this project was to build and test the Field Grid Sense system for yield mapping and machine control during harvesting. Secondly, to use Field Grid Sense system with chemical application equipment to demonstrate a workable in-field system. This document contains summarized quarterly reports.

1995-12-15T23:59:59.000Z

330

On farm yield and water use response of pearl millet to different management practices in Niger  

E-Print Network (OSTI)

Pearl millet [Pennisetum glaucum (L.) R.Br.] production under subsistence farmer management on the sandy soils of southwestern Niger is faced with many challenges, including declining soil fertility, highly variable and scarce rainfall and poor resource base of the peasant farmers in the region. This study was conducted to evaluate the potential of management to increase yield and water use efficiency of pearl millet grown on two farmers’ fields in Niger during two growing seasons, 2003 and 2004. The management practices tested were: 1) Five manure treatments (no manure, transported manure, current corralling, a year after corralling, and two years after corralling); 2) The microdose technology (20 kg di-ammonium phosphate ha-1, and 20 kg di-ammonium phosphate ha-1 + 10 kg urea ha-1); and lastly, 3) Three different pearl millet cultivars (Heini Kirei, Zatib, and ICMV IS 89305). In both growing seasons, manure had the greatest effect on the yield and water use of pearl millet at both sites. In 2003 grain yields were 389 kg ha-1 in the NM treatment and 1495 kg ha-1 in the C0 treatment at Banizoumbou whereas at Bagoua, the NM treatment had 423 kg ha-1 vs. 995 kg ha-1 in the C0 treatment. In 2004, the NM treatment at Banizoumbou had 123 kg ha-1 grain yield and the C0 treatment had 957 kg ha-1 whereas at Bagoua the NM treatment had 506 kg ha-1 vs. 1152 kg ha-1 in the C0 treatment. Residual effects of manure led to grain yields in the C1 and C2 treatments which were more than twice as high as in the NM treatment. The improved cultivars were generally superior for grain yields, whereas the local landrace was superior for straw yields at both sites. Root zone drainage was decreased by between 50 to 100 mm, and water use increased by the same amount in the current corrals at the two sites during the two growing seasons. Increased water use under corralling and presence of residual profile moisture at the end of each of the two seasons suggested that water did not limit pearl millet production at the two sites.

Manyame, Comfort

2006-12-01T23:59:59.000Z

331

PERFORMANCE GUARANTEE AGREEMENT  

National Nuclear Security Administration (NNSA)

F F PERFORMANCE GUARANTEE SEE ATTACHED Appendix F - Page 308 PERFORMANCE GUARANTEE AGREEMENT For value received, and in consideration of, and in order to induce the United States (the Government) to enter into Contract DE-AC52-07NA27344 for the management and operation of the Lawrence Livermore National Laboratory (the "Contract") dated __________, by and between the Government and Lawrence Livermore National Security LLC (Contractor), the undersigned, Bechtel National, Inc. (Guarantor), a corporation incorporated in the State of Nevada with its principal place of business at 5275 Westview Drive, Frederick, Maryland 21703, hereby unconditionally guarantees to the Government (a) the full and prompt payment and performance of all obligations, accrued and executory, which Contractor presently or hereafter

332

Contractor Past Performance Information  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Chapter 42.15 (DEC 2010) - Attachment A 2 Blocks 7, 9, 11, 12: Contracting Officer, Contract Completion Date, Awarded Value, and Current Contract Dollar Value are up to date. [Note: When auto-registration is available and used, the Contract Completion Date, Awarded Value, and Current Contract Dollar Value will be pre- populated from FPDS-NG.] Contract Completion Date and Awarded Value should include all option periods, even if the options have not yet been exercised. Block 15: Subcontractors performing 25% or more or a critical aspect of the work are identified. This block is not a place to assess subcontractor performance. Due to privity of contract, the Government can only write a performance assessment for a prime Contractor. Block 17: Contract Effort Description is

333

Performance profiles style sheet  

Gasoline and Diesel Fuel Update (EIA)

Performance Profiles of Major Energy Producers 2009 Performance Profiles of Major Energy Producers 2009 vii Major Findings This edition of Performance Profiles reviews financial and operating data for the calendar year 2009 and discusses important trends and emerging issues relevant to U.S. energy company operations. Major U.S.-based oil and natural gas producers and petroleum refiners submit the data in this report annually on Form EIA-28, the Financial Reporting System (FRS). FRS companies' net income declined to the lowest level since 2002.  Net income fell 66 percent (in constant 2009 dollars) to $30 billion in 2009 from $88 billion in 2008. Substantial reductions in oil and natural gas prices in 2009 slowed revenue growth. FRS companies cut operating costs but by less than the decline in revenue, resulting in a 69-percent drop in operating income.

334

Estimate HRSG performance quickly  

SciTech Connect

Heat recovery steam generators (HRSG) are coupled to a heat recovery source which exhausts hot gases, such as gas turbines, furnaces, kilns, etc., to generate steam for the plant's process or power needs. When two pieces of equipment are coupled, their performances may not match their respective design or maximum efficiency points due to varying plant load or steam demand. In addition, many plants require the HRSG to operate effectively over the entire operating range of the plant. In chemical and fertilizer plants, hot gas is cooled in the HRSG to the required limiting temperature. In plants using gas turbines, even ambient conditions will affect HRSG performance indirectly. So a plant engineer should be able to predict the HRSG performance at any design point called for by the plant's load or steam demand.

Kuppuraj, K.

1986-07-01T23:59:59.000Z

335

Contractor Past Performance Information  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

December 2010) December 2010) 1 Contractor Performance Information References Federal Acquisition Regulation (FAR) Subparts 8.4 Federal Supply Schedules - 8.406-7 Contractor performance evaluation and 8.406-8 Reporting 9.1 Responsible Prospective Contractors - 9.104 Standards and 9.105 Procedures 9.4 Debarment, Suspension and Ineligibility - 9.406 Debarment and 9.407 Suspension 12.2 Special Requirements for the Acquisition of Commercial Items - 12.206 Use of past performance 12.4 Unique Requirements Regarding Terms and Conditions for Commercial Items - 12.403 Termination 13.1 Procedures - 13.106-2 Evaluation of quotations or offers 15.3 Source Selection - 15.305 Proposal evaluation 15.4 Contract Pricing - 15.407-1 Defective cost or pricing data

336

Analysis of Photovoltaic System Energy Performance Evaluation Method  

SciTech Connect

Documentation of the energy yield of a large photovoltaic (PV) system over a substantial period can be useful to measure a performance guarantee, as an assessment of the health of the system, for verification of a performance model to then be applied to a new system, or for a variety of other purposes. Although the measurement of this performance metric might appear to be straight forward, there are a number of subtleties associated with variations in weather and imperfect data collection that complicate the determination and data analysis. A performance assessment is most valuable when it is completed with a very low uncertainty and when the subtleties are systematically addressed, yet currently no standard exists to guide this process. This report summarizes a draft methodology for an Energy Performance Evaluation Method, the philosophy behind the draft method, and the lessons that were learned by implementing the method.

Kurtz, S.; Newmiller, J.; Kimber, A.; Flottemesch, R.; Riley, E.; Dierauf, T.; McKee, J.; Krishnani, P.

2013-11-01T23:59:59.000Z

337

PERFORMANCE STATISTICS WEIGHTS  

NLE Websites -- All DOE Office Websites (Extended Search)

27 lbs 27 lbs Delivered Curb Weight: 3618 lbs Distribution F/R: 58/42 % GVWR: 4680 lbs GAWR F/R: 2440/2440 lbs Payload: 1062 lbs Performance Goal: 400 lbs DIMENSIONS Wheelbase: 103.2 inches Track F/R: 61.1/60.2 inches Length: 174.5 inches Width: 71.4 inches Height: 69.5 inches Ground Clearance: 7.8 inches Performance Goal: 5.0 inches TIRES Tire Mfg: Continental Tire Model: EcoPlus Tire Size: P235/70R16

338

PERFORMANCE STATISTICS WEIGHTS  

NLE Websites -- All DOE Office Websites (Extended Search)

3474 lbs 3474 lbs Delivered Curb Weight: 3435 lbs GVWR: 4718 lbs GAWR F/R: 2491/2436 lbs Distribution F/R: % Payload: 1283 lbs Performance Goal: 400 lbs DIMENSIONS Wheelbase: 106.6 in Track F/R: 61.0/61.0 in Length: 181.3 in Width: 71.6 in Height: 65.3 in Ground Clearance: 7.0 in Performance Goal: 5.0 in TIRES Tire Mfg: General Tire Model: Ameri GS60 Tire Size: P215/70R16 Tire Pressure F/R: 35/35 psi

339

High performance steam development  

SciTech Connect

DOE has launched a program to make a step change in power plant to 1500 F steam, since the highest possible performance gains can be achieved in a 1500 F steam system when using a topping turbine in a back pressure steam turbine for cogeneration. A 500-hour proof-of-concept steam generator test module was designed, fabricated, and successfully tested. It has four once-through steam generator circuits. The complete HPSS (high performance steam system) was tested above 1500 F and 1500 psig for over 102 hours at full power.

Duffy, T.; Schneider, P.

1995-12-31T23:59:59.000Z

340

PERFORMANCE STATISTICS WEIGHTS  

NLE Websites -- All DOE Office Websites (Extended Search)

90 lbs 90 lbs Delivered Curb Weight: 2936 lbs Distribution F/R: 59/41 % GVWR: 3795 lbs GAWR F/R: 2335/2250 lbs Payload: 905 lbs Performance Goal: 400 lbs DIMENSIONS Wheelbase: 106 inches Track F/R: 59/58 inches Length: 175 inches Width: 67 inches Height: 57.8 inches Ground Clearance: 4.3 inches Performance Goal: 5.0 inches TIRES Tire Mfg: Goodyear Tire Model: Integrity Tire Size: P185/65R15 Tire Pressure F/R: 35/33 psi

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


341

PERFORMANCE STATISTICS WEIGHTS  

NLE Websites -- All DOE Office Websites (Extended Search)

40 lbs 40 lbs Delivered Curb Weight: 3556 lbs Distribution F/R: 58/42 % GVWR: 4665 lbs GAWR F/R: Unavailable Payload: 1109 lbs Performance Goal: 400 lbs DIMENSIONS Wheelbase: 109.3 in Track F/R: 62.0/61.6 in Length: 189.2 in Width: 71.7 in Height: 57.9 in Ground Clearance: 5.9 in Performance Goal: 5.0 in TIRES Tire Mfg: Michellin Tire Model: Energy MXV458 Tire Size: P215/60R16 Tire Pressure F/R: 32/32

342

PERFORMANCE STATISTICS WEIGHTS  

NLE Websites -- All DOE Office Websites (Extended Search)

5650 lbs 5650 lbs Delivered Curb Weight: 5579 lbs Distribution F/R: 51.8/48.2 GVWR: 7100 lbs GAWR F/R: 3200/4100 lbs Payload: 1521 lbs Performance Goal: 400 lbs DIMENSIONS Wheelbase: 116.0 in Track F/R: 68.2/67.0 in Length: 202.0 in Width: 79.0 in Height: 74.6 in Ground Clearance: 9.5 in Performance Goal: 5.0 in TIRES Tire Mfg: Bridgestone Tire Model: Dueler H/R Tire Size: P265/65R18 Tire Pressure F/R: 32 psi

343

Photovoltaic lighting system performance  

DOE Green Energy (OSTI)

The performance of 21 PV-powered low pressure sodium lighting systems on a multi-use has been documented in this paper. Specific areas for evaluation include the vandal resistant PV modules, constant voltage and on/off PV charge controllers, flooded deep-cycle lead-antimony and valve regulated lead-acid (VLRA) gel batteries, and low pressure sodium ballasts and lights. The PV lighting system maintenance intervals and lessons learned have been documented over the past 2.5 years. The above performance data has shown that with careful hardware selection, installation, and maintenance intervals the PV lighting systems will operate reliably.

Harrington, S.R.; Hund, T.D.

1996-06-01T23:59:59.000Z

344

FY 2009 Annual Performance Report  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

AnnuAl PerformAnce rePort Working to Save the Planet DOE/CF-0044 CONTENTS Introduction ....................................................................................................................................1 Mission ...........................................................................................................................................2 Message from the Secretary ...........................................................................................................3 Performance Background...............................................................................................................5 High Priority Performance Goals ...................................................................................................7

345

The web of system performance  

Science Conference Proceedings (OSTI)

Because information system performance is multidimensional, specialist theories of performance dimensions must be integrated into a model of system design.

Brian Whitworth; Jerry Fjermestad; Edward Mahinda

2006-05-01T23:59:59.000Z

346

High performance systems  

SciTech Connect

This document provides a written compilation of the presentations and viewgraphs from the 1994 Conference on High Speed Computing given at the High Speed Computing Conference, {open_quotes}High Performance Systems,{close_quotes} held at Gleneden Beach, Oregon, on April 18 through 21, 1994.

Vigil, M.B. [comp.

1995-03-01T23:59:59.000Z

347

Performance modeling of Beamlet  

SciTech Connect

Detailed modeling of beam propagation in Beamlet has been made to predict system performance. New software allows extensive use of optical component characteristics. This inclusion of real optical component characteristics has resulted in close agreement between calculated and measured beam distributions.

Auerbach, J.M.; Lawson, J.K.; Rotter, M.D.; Sacks, R.A.; Van Wonterghem, B.W.; Williams, W.H.

1995-06-27T23:59:59.000Z

348

Diversity and Performance  

Science Conference Proceedings (OSTI)

This study measures the performance of U.S. firms initiating same-sex domestic partnership benefit SSDPB policies. The results show that holding these firms upon their SSDPB initiation in a calendar portfolio earns a four-factor annualized excess return ... Keywords: applications, finance, management, multiattribute, preference, utility

Feng Li; Venky Nagar

2013-03-01T23:59:59.000Z

349

Operation Redwing-Project 6. 4. Airborne antennas and phototubes for determination of nuclear-weapon yield. Report for May-July 1956  

SciTech Connect

Airborne equipment was designed for determining the location and yield of a nuclear detonation. This equipment determines yield from a measurement of the interval between the time of the burst and the time of the second peak in the thermal-radiation intensity curve. Flush-mounted ferrite-core magnetic loop antennas for use in detecting the electromagnetic signal and thus fixing the time of the burst, performed successfully during Operation Redwing. Two kinds of photocubes for detecting the second thermal peak were tested and were found about equally satisfactory. The method selected for yield determination gave results accurate + or - 16% for five shots. Detailed study of the data showed that the electromagnetic signal, consisting of a direct pulse followed by a series of ionosphere-reflected sky waves, could be used in many waves to give information concerning the detonation and the ionsphere. From the time intervals between the ground wave and sky waves, it was foun possible to compute both the distance between and receiver and the height of the reflecting ionosphere layer.

Waters, A.J.; Clapp, R.E.

1985-04-01T23:59:59.000Z

350

High Performance Windows Volume Purchase: About the High Performance  

NLE Websites -- All DOE Office Websites (Extended Search)

High Performance Windows Volume Purchase: About the High Performance Windows Volume Purchase: About the High Performance Windows Volume Purchase Program to someone by E-mail Share High Performance Windows Volume Purchase: About the High Performance Windows Volume Purchase Program on Facebook Tweet about High Performance Windows Volume Purchase: About the High Performance Windows Volume Purchase Program on Twitter Bookmark High Performance Windows Volume Purchase: About the High Performance Windows Volume Purchase Program on Google Bookmark High Performance Windows Volume Purchase: About the High Performance Windows Volume Purchase Program on Delicious Rank High Performance Windows Volume Purchase: About the High Performance Windows Volume Purchase Program on Digg Find More places to share High Performance Windows Volume Purchase:

351

ENDF/B-VII.1 Nuclear Data for Science and Technology: Cross Sections, Covariances, Fission Product Yields and Decay Data  

SciTech Connect

The ENDF/B-VII.1 library is our latest recommended evaluated nuclear data file for use in nuclear science and technology applications, and incorporates advances made in the five years since the release of ENDF/B-VII.0. These advances focus on neutron cross sections, covariances, fission product yields and decay data, and represent work by the US Cross Section Evaluation Working Group (CSEWG) in nuclear data evaluation that utilizes developments in nuclear theory, modeling, simulation, and experiment. The principal advances in the new library are: (1) An increase in the breadth of neutron reaction cross section coverage, extending from 393 nuclides to 418 nuclides; (2) Covariance uncertainty data for 185 of the most important nuclides, as documented in companion papers in this edition; (3) R-matrix analyses of neutron reactions on light nuclei, including isotopes of He, Li, and Be; (4) Resonance parameter analyses at lower energies and statistical high energy reactions at higher energies for isotopes of F, Cl, K, Ti, V, Mn, Cr, Ni, Zr and W; (5) Modifications to thermal neutron reactions on fission products (isotopes of Mo, Tc, Rh, Ag, Cs, Nd, Sm, Eu) and neutron absorber materials (Cd, Gd); (6) Improved minor actinide evaluations for isotopes of U, Np, Pu, and Am (we are not making changes to the major actinides 235,238U and 239Pu at this point, except for delayed neutron data, and instead we intend to update them after a further period of research in experiment and theory), and our adoption of JENDL-4.0 evaluations for isotopes of Cm, Bk, Cf, Es, Fm, and some other minor actinides; (7) Fission energy release evaluations; (8) Fission product yield advances for fission-spectrum neutrons and 14 MeV neutrons incident on 239Pu; and (9) A new Decay Data sublibrary. Integral validation testing of the ENDF/B-VII.1 library is provided for a variety of quantities: For nuclear criticality, the VII.1 library maintains the generally-good performance seen for VII.0 for a wide range of MCNP simulations of criticality benchmarks, with improved performance coming from new structural material evaluations, especially for Ti, Mn, Cr, Zr and W. For Be we see some improvements although the fast assembly data appear to be mutually inconsistent. Actinide cross section updates are also assessed through comparisons of fission and capture reaction rate measurements in critical assemblies and fast reactors. We describe the cross section evaluations that have been updated for ENDF/B-VII.1 and the measured data and calculations that motivated the changes, and therefore this paper augments the ENDF/B-VII.0 publication [1].

G. Palmiotti

2011-12-01T23:59:59.000Z

352

PV performance modeling workshop summary report.  

DOE Green Energy (OSTI)

During the development of a solar photovoltaic (PV) energy project, predicting expected energy production from a system is a key part of understanding system value. System energy production is a function of the system design and location, the mounting configuration, the power conversion system, and the module technology, as well as the solar resource. Even if all other variables are held constant, annual energy yield (kWh/kWp) will vary among module technologies because of differences in response to low-light levels and temperature. A number of PV system performance models have been developed and are in use, but little has been published on validation of these models or the accuracy and uncertainty of their output. With support from the U.S. Department of Energy's Solar Energy Technologies Program, Sandia National Laboratories organized a PV Performance Modeling Workshop in Albuquerque, New Mexico, September 22-23, 2010. The workshop was intended to address the current state of PV system models, develop a path forward for establishing best practices on PV system performance modeling, and set the stage for standardization of testing and validation procedures for models and input parameters. This report summarizes discussions and presentations from the workshop, as well as examines opportunities for collaborative efforts to develop objective comparisons between models and across sites and applications.

Stein, Joshua S.; Tasca, Coryne Adelle (SRA International, Inc., Fairfax, VA); Cameron, Christopher P.

2011-05-01T23:59:59.000Z

353

Contractor Past Performance Information  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

May 2010) May 2010) 1 Reporting Other Contractor Information into Federal Awardee Performance and Integrity Information System References Federal Acquisition Regulation (FAR) Subparts 8.4 Federal Supply Schedules - 8.406 Ordering activity responsibilities 9.1 Responsible Prospective Contractors - 9.105 Procedures 9.4 Debarment, Suspension and Ineligibility - 9.406 Debarment and 9.407 Suspension 12.4 Unique Requirements Regarding Terms and Conditions for Commercial Items - 12.403 Termination 15.4 Contract Pricing - 15.407 Special cost or pricing areas 42.15 Contractor Performance Information - 42.1503 Procedures 49.4 Termination for Default - 49.402 Termination of fixed-price contracts for default DEAR and Acquisition Guide

354

Contractor Past Performance Information  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

August 2013) August 2013) 1 Reporting Other Contractor Information into Federal Awardee Performance and Integrity Information System (FAPIIS) References Federal Acquisition Regulation (FAR) Subparts 8.4 Federal Supply Schedules - 8.406 Ordering activity responsibilities 9.1 Responsible Prospective Contractors - 9.104 Solicitation provisions and contract clauses and 9.105 Procedures 9.4 Debarment, Suspension and Ineligibility - 9.406 Debarment and 9.407 Suspension 12.4 Unique Requirements Regarding Terms and Conditions for Commercial Items - 12.403 Termination 15.4 Contract Pricing - 15.407 Special cost or pricing areas 42.15 Contractor Performance Information - 42.1503 Procedures 49.4 Termination for Default - 49.402 Termination of fixed-price contracts for default

355

Performance profiles style sheet  

Gasoline and Diesel Fuel Update (EIA)

06) 06) Distribution Category UC-950 Performance Profiles of Major Energy Producers 2006 December 2007 Energy Information Administration Office of Energy Markets and End Use U.S. Department of Energy Washington, DC 20585 This report was prepared by the Energy Information Administration, the independent statistical and analytical agency within the U.S. Department of Energy. The information contained herein should be attributed to the Energy Information Administration and should not be construed as advocating or reflecting any policy position of the Department of Energy or any other organization. Contacts Performance Profiles of Major Energy Producers 2006 is prepared by the Energy Information Administration, Office of Energy Markets and End Use, Energy Markets and Contingency Information Division, Financial

356

Remedial Action Performed  

Office of Legacy Management (LM)

General Motors Site in General Motors Site in Adrian, Michigan Department of Energy OiZce of Assistant Manager for Environmental Management Oak Ridge Operations January 2001 69 Printed on recycledhcydable paper. CERTIFICATION DOCKET FOR THE REMEDIAL ACTION PERFORMED AT THE GENERAL MOTORS SITE ADRIAN, MICHIGAN JANUARY 200 1 Prepared for United States Army Corps of Engineers Under Contract No. DACW45-98-D-0028 BY Bechtel National, Inc. Oak Ridge, Tennessee Bechtel Job No. 14501 CONTENTS FIGURES .............................................................................................................................................. TABLES ...............................................................................................................................................

357

Achieving Superior Energy Performance  

E-Print Network (OSTI)

Ms. Ferland will be presenting the plant energy-efficiency certification program developed by the US Council for Energy Efficiency Manufacturing over the last two years. The foundation of the program is the proposed ISO 50001 standard on energy management. Superior Energy Performance combines an outcome based approach (energy intensity improvement) with a commitment to continual improvement (conformance with the ISO standard). The program is now in the demonstration phase in a number of states.

Ferland, K.

2010-01-01T23:59:59.000Z

358

Human Performance - Fossil Operations  

Science Conference Proceedings (OSTI)

All humans make errors. Industrial human errors can result in a loss of life and can significantly impact the productivity and cost effectiveness of any facility or company. Several industries in which human error has had a significant impact (for example, airline, medical, military, nuclear power, aviation, and chemical) have implemented human performance programs with excellent results. Human errors by fossil plant operators can easily challenge plant safety and production. In the fossil operations are...

2007-02-28T23:59:59.000Z

359

High-Yield Solvothermal Formation of Magnetic CoPt Alloy Nanowires  

SciTech Connect

One-dimensional (1D) magnetic nanomaterials have attracted much attention recently because of their applications in magnetic recording and spintronics. Nevertheless, it remains a challenge to prepare free-standing magnetic nanowires in high yield. This Communication reports the successful high-yield synthesis of an interesting 1D ferromagnetic CoPt alloy by direct decomposition of platinum acetylacetonate and cobalt carbonyl compound in ethylenediamine solvent through a solvothermal reaction. The CoPt alloy nanowires obtained have a tunable diameter of 10-50 nm and a length along the longitudinal axis of up to several microns, depending on crystallization temperature and reaction time. A unique formation mechanism involving coarsening and ripening under solvothermal conditions was discovered. This research opens new opportunities in synthesizing nanomaterials through low-temperature solvothermal processes.

Zhang, Zongtao [ORNL; Blom, Douglas Allen [ORNL; Gai, Zheng [ORNL; Thompson, James R [ORNL; Shen, Jian [ORNL; Dai, Sheng [ORNL

2003-01-01T23:59:59.000Z

360

Microbial Electrolysis Cells (MECs) for High Yield Hydrogen (H2) Production from Biodegradable Materials  

NLE Websites -- All DOE Office Websites (Extended Search)

Microbial Electrolysis Cells (MECs) for High Yield H Microbial Electrolysis Cells (MECs) for High Yield H 2 Production from Biodegradable Materials Zhiyong "Jason" Ren, Ph.D Associate Professor, Environmental and Sustainability Engineering University of Colorado Boulder Jason.Ren@colorado.edu (303) 492-4137 http://spot.colorado.edu/~zhre0706/ MxC or Microbial Electrochemical System (MES) is a platform technology for energy and resource recovery Main type of MXC Products Microbial Fuel Cell (MFC) Electricity Microbial Electrolysis Cell (MEC) H 2 , H 2 O 2 , NaOH, Struvite Microbial Chemical Cell (MCC) CH 4 , C 2 H 4 O 2 , Organics Microbial Remediation Cell (MRC) Reduced/non-toxic chemicals Microbial Desalination Cell (MDC) Desalinated water >90% H 2 MEC for H 2 Recovery PS e - e - Wang and Ren, Biotechnol. Adv. 2013

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361

Improved InGaN epitaxy yield by precise temperature measurement :yearly report 1.  

SciTech Connect

This Report summarizes the first year progress (October 1, 2004 to September 30, 2005) made under a NETL funded project entitled ''Improved InGaN Epitaxy Yield by Precise Temperature Measurement''. This Project addresses the production of efficient green LEDs, which are currently the least efficient of the primary colors. The Project Goals are to advance IR and UV-violet pyrometry to include real time corrections for surface emissivity on multiwafer MOCVD reactors. Increasing wafer yield would dramatically reduce high brightness LED costs and accelerate the commercial manufacture of inexpensive white light LEDs with very high color quality. This work draws upon and extends our previous research (funded by DOE) that developed emissivity correcting pyrometers (ECP) based on the high-temperature GaN opacity near 400 nm (the ultraviolet-violet range, or UVV), and the sapphire opacity in the mid-IR (MIR) near 7.5 microns.

Koleske, Daniel David; Creighton, James Randall; Russell, Michael J.; Fischer, Arthur Joseph

2006-08-01T23:59:59.000Z

362

A simple, high-yield, apparatus for NEG coating of vacuum beamline elements  

SciTech Connect

Non-Evaporable Getter (NEG) materials are extremely useful in vacuum systems for achieving Ultra High Vacuum. Recently, these materials have been used to coat the inner surfaces of vacuum components, acting as an internal, passive, vacuum pump. We have constructed a low cost apparatus, which allows coating of very small diameter vacuum tubes, used as differential pumping stages. Despite the relative ease of construction, we are routinely able to achieve high coating yields. We further describe an improvement to our system, which is able to achieve the same yield, at an even lower complexity by using an easily manufactured permanent magnet arrangement. The designs described are extendible to virtually any combination of length and diameter of the components to be coated.

Ron, Guy; Oort, Ron; Lee, Daniel

2010-12-01T23:59:59.000Z

363

A homogenization approach to the yield strength of spherical powder compacts  

SciTech Connect

Optimal external estimates of the macroscopic strength criteria of a hexagonal array of identical spherical grains, under isostatic and closed die compaction, have been obtained through the use of the kinematic approach of the yield design homogenization method. Two appropriate unit cells, one for each stage compaction (I and II), and eight relevant failure mechanisms are considered. For comparison purposes, numerical simulations based on FEA similar to those of Ogbana and Fleck [1] have also been carried out. The shapes and sizes of the macroscopic yield surfaces are determined at various stages of compaction and it has been found in particular that they depend upon the loading history as well as the relative density of the compact.

Benabbes, A.; Siad, L. [URCA/GRESPI, Universite de Reims, UFR SEN, B.P. 1039, 51687 Reims cedex 2 (France); Dormieux, L. [LMSGC, Ponts ParisTech, cite Descartes, Champs-sur-Marne, F-77455 (France); Liu, W. K. [Northwestern University, DME, Evanston (United States) and SKKU (Korea, Republic of)

2010-06-15T23:59:59.000Z

364

Ionization Yield from Nuclear Recoils in Liquid-Xenon Dark Matter Detection  

E-Print Network (OSTI)

The ionization yield in the two-phase liquid xenon dark-matter detector has been studied in keV nuclear-recoil energy region. The newly-obtained nuclear quenching as well as the recently-measured average energy required to produce an electron-ion pair are used to calculate the total electric charges produced. To estimate the fraction of the electron charges collected, the Thomas-Imel model is generalized to describing the field dependence for nuclear recoils in liquid xenon. With free parameters fitted to experiment measured 56.5 keV nuclear recoils, the energy dependence of ionization yield for nuclear recoils is predicted, which increases with the decreasing of the recoiling energy and reaches the maximum value at 2~3 keV. This prediction agrees well with existing data and may help to lower the energy detection threshold for nuclear recoils to ~1 keV.

Mu, Wei

2013-01-01T23:59:59.000Z

365

Anisotropic yielding of rocks at high temperatures and pressures; Annual Progress Report, 1988-1989  

DOE Green Energy (OSTI)

The experimental results we have obtained on Four-Mile gneiss have demonstrated that the yield behavior of quartzo-feldspathic rocks containing only a small percentage (10%) of mica can be markedly anisotropic, provided the mica minerals exhibit a strong crystallographic preferred orientation. Samples of gneiss oriented such that resolved shear stresses on the foliation plane are large are considerably weaker than granites of similar grain size and composition, and this weakness is attributed to enhanced nucleation of microcracks in quartz and feldspar adjacent to mica grains that are suitably oriented for slip. We expect the yield behavior of rocks containing a higher proportion of phyllosilicates to be influenced by the strongly anisotropic nature of these minerals as well, although the strengths, temperature and pressure dependencies, and flow-controlling mechanisms in such rocks may be significantly different.

Kronenberg, A.K.; Russell, J.E.; Carter, N.L.

1989-11-30T23:59:59.000Z

366

Nitride fuel performance  

E-Print Network (OSTI)

The purpose of this work was to assess the potential of nitride fuels in the current context of the nuclear industry. Nitride fuels systems have indeed been for the past decade the subject of new interest from the international community. This renewal of interest can be explained by the strong potential that nitride fuel systems exhibit for applications such as advanced fast reactor technology, waste transmutation and nuclear space power. To assess this potential, a review of the nitride physical properties was performed in comparison to oxide or metal fuel properties. The potential applications of nitride systems were also detailed. A fuel performance computer code was developed to obtain a more quantitative comparison between nitride and oxide fuel. The oxide code FUELROD was taken as a basis for the new code. After modernization, nitride fuel property correlations were implemented to obtain a nitride version of the code. Using this new tool, a comparison between oxide and nitride fuels was performed to highlight their difference in irradiation behavior in order to confirm their potential.

Reynaud, Sylvie Marie Aurel?ie

2002-01-01T23:59:59.000Z

367

The european FAZIA initiative: a high-performance digital telescope array for heavy-ion studies  

E-Print Network (OSTI)

The european Fazia collaboration aims at building a new modular array for charged product identification to be employed for heavy-ion studies. The elementary module of the array is a Silicon-Silicon-CsI telescope, optimized for ion identification also via pulse shape analysis. The achievement of top performances imposes specific electronics which has been developed by FAZIA and features high quality charge and current preamplifiers, coupled to fully digital front-end. During the initial R&D phase, original and novel solutions have been tested in prototypes, obtaining unprecedented ion identification capabilities. FAZIA is now constructing a demonstrator array consisting of about two hundreds telescopes arranged in a compact and transportable configuration. In this contribution, we mainly summarize some aspects studied by FAZIA to improve the ion identification. Then we will briefly discuss the FAZIA program centered on experiments to be done with the demonstrator. First results on the isospin dynamics obtained with a reduced set-up demonstrate well the performance of the telescope and represent a good starting point towards future investigations with both stable and exotic beams.

G. Casini; S. Barlini; G. Pasquali; G. Pastore; M. Bini; S. Carboni; A. Olmi; S. Piantelli; G. Poggi; A. Stefanini; S. Valdre'; E. Bonnet; B. Borderie; R. Bougault; M. Bruno; A. Chbihi; M. Cinausero; M. Degerlier; P. Edelbruck; J. D. Frankland; F. Gramegna; D. Gruyer; M. Guerzoni; A. Kordjasz; T. Kozik; N. Le Neindre; O. Lopez; T. Marchi; P. Marini; L. Morelli; A. Ordine; M. Parlog; M. F. Rivet; E. Rosato; F. Salomon; G. Spadaccini; T. Twarog; E. Vient; M. Vigilante

2013-09-05T23:59:59.000Z

368

Materials on the brink: Unprecedented transforming materials www.low-hysteresis.caltech.edu  

E-Print Network (OSTI)

of California, Santa Barbara ! Chris J. Palmstrøm (Paul Simmonds2) ! Rutgers, The State University of New Jersey on Computation and Experimental Engineering and Science ! Sossina Haile delivers ! Lucy Pickett Lecturer

369

The 3D X-ray Crystal Microscope: An Unprecedented Tool for ICME  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2nd World Congress on Integrated Computational Materials Engineering. Symposium, 2nd World Congress on Integrated ...

370

PRESTRESSING A TWO-LAYER PRESSURE VESSEL BY CONTROLLED YIELDING OF THE INNER LAYER  

SciTech Connect

A method of designing a two-layer pressure vessel is presented wherein contact between the layers is produced by controlled yielding of the inner vessel by internal pressure. The amount of prestress depends upon the dimensions of the vessel, the properties of the material of construction, and the prestressing pressure. The method takes into account the actual stress-strain curve of the material and satisfies the rales of plastic flow with work hardening. (auth)

Schneider, R.W.

1964-04-01T23:59:59.000Z

371

PRESTRESSING A TWO-LAYER PRESSURE VESSEL BY CONTROLLED YIELDING OF THE INNER LAYER  

SciTech Connect

A method is presented for designing a two-layer pressure vessel wherein contact between the layers is produced by controlled yielding of the inner vessel by internal pressure. The amount of prestress depends upon the dimensions of the vessel, the properties of the material of construction, and the prestressing pressure. The method takes into account the actual stress-strain curve of the material and satisfies the rules of plastic flow with work hardening. (auth)

Schneider, R.W.

1964-01-29T23:59:59.000Z

372

B{yields}{gamma}{gamma} in an Appelquist-Cheng-Dobrescu model  

Science Conference Proceedings (OSTI)

We present a full calculation of the amplitudes for B{sub d[s]}{yields}{gamma}{gamma} in a simple Appelquist-Cheng-Dobrescu model that extends an incomplete one in a previous paper. We find cancellations between the contributions from different Kaluza-Klein towers and a small decrease relative to the standard model predictions. It is conjectured that radiative QCD corrections might actually lead to an enhancement in the branching ratios and CP asymmetries, but no more than modest ones.

Bigi, I. I. [Department of Physics, University of Notre Dame du Lac, Notre Dame, Indiana 46556 (United States); Devidze, G. G.; Liparteliani, A. G. [Institute of High Energy Physics and Informatization, Tbilisi State University, 9 University Street, 0186 Tbilisi (Georgia); Meissner, U.-G. [Helmholtz-Institut fuer Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universitaet Bonn, D-53115 Bonn (Germany); Forschungszentrum Juelich, Institut fuer Kernphysik (IKP-3) and Juelich Center for Hadron Physics, D-52425 Juelich (Germany)

2008-11-01T23:59:59.000Z

373

Method and apparatus for increasing the durability and yield of thin film photovoltaic devices  

DOE Patents (OSTI)

Thin film photovoltaic cells having a pair of semiconductor layers between an opaque and a transparent electrical contact are manufactured in a method which includes the step of scanning one of the semiconductor layers to determine the location of any possible shorting defect. Upon the detection of such defect, the defect is eliminated to increase the durability and yield of the photovoltaic device. 10 figs.

Phillips, J.E.; Lasswell, P.G.

1987-02-03T23:59:59.000Z

374

Reliability-yield allocation for semiconductor integrated circuits: modeling and optimization  

E-Print Network (OSTI)

This research develops yield and reliability models for fault-tolerant semiconductor integrated circuits and develops optimization algorithms that can be directly applied to these models. Since defects cause failures in microelectronics systems, accurate yield and reliability models considering these defects as well as optimization techniques determining efficient defect-tolerant schemes are essential in semiconductor manufacturing and nanomanufacturing to ensure manufacturability and productivity. The defect-based yield model considers various types of failures, fault-tolerant schemes such as hierarchical redundancy and error correcting code, and burn-in effects, simultaneously. The reliability model counts on carry-over single-cell failures accompanied by the failure rate of the semiconductor integrated circuits under the assumption of an error correcting code policy. The redundancy allocation problem, which seeks to ?nd an optimal allocation of redundancy that maximizes system reliability, is one of the representative problems in reliability optimization. The problem is typically formulated as a nonconvex integer nonlinear programming problem that is nonseparable and coherent. Two iterative heuristics, tree and scanning heuristics, and variants are studied to obtain local optima and a branch-and-bound algorithm is proposed to ?nd the global optimum for redundancy allocation problems. The proposed algorithms engage a multiple-search paths strategy to accelerate efficiency. Experimental results of these algorithms indicate that they are superior to the existing algorithms in terms of computation time and solution quality. An example of memory semiconductor integrated circuits is presented to show the applicability of both the yield and reliability models and the optimization algorithms to fault-tolerant semiconductor integrated circuits.

Ha, Chunghun

2004-08-01T23:59:59.000Z

375

SLUDGE BATCH SUPPLEMENTAL SRAT RUNS EFFECTS OF YIELD STRESS AND CYCLE TIME INCREASE  

DOE Green Energy (OSTI)

The Defense Waste Processing Facility (DWPF) has transitioned from Sludge Batch 5 (SB5) processing to Sludge Batch 6 (SB6) processing. Phase III-Tank 40 Chemical Process Cell (CPC) flowsheet simulations have been completed to determine the initial processing conditions for the DWPF transition. The impact of higher yield stress (SB-25) and cycle time extension (SB6-26) on the physical and chemical effects of SB6 processing during the SRAT (Sludge Receipt and Adjustment Tank) cycle were evaluated. No significant impacts on the SRAT chemistry were noted during the higher yield stress run. In particular, no impact on mercury stripping was noted, indicating that settling of elemental mercury was not the primary factor in the low mercury recovery noted in the flowsheet testing. The SRAT product from this run retained the higher yield stress of the starting sludge. The run indicated that ultrasonication is an effective tool to increase the yield stress of simulants to targeted values and the chemistry of downstream processing is not impacted. Significant differences were noted in the cycle time extension test compared to the Phase III flowsheet baseline runs. Large decreases in the ammonia and hydrogen generation rates were noted along with reduced mercury stripping efficiency. The latter effect is similar to that of operating under a high acid stoichiometry. It is conceivable that, under the distinctly different conditions of high formic acid concentration (high acid run) or slow formic acid addition (extended run), that mercury could form amalgams with noble metals, possibly rendering both inert. Thus, the removal of free mercury and noble metals could decrease the rate of catalytic formic acid reactions which would decrease generation of ammonium and hydrogen. The potential underlying reasons for the behavior noted during this run would require additional testing.

Fernandez, A.

2010-08-10T23:59:59.000Z

376

Influence of pairing on the distribution of independent yield strengths in neutron-induced fission  

SciTech Connect

This report is a summary of the current status of an ongoing investigation of the influence of the pairing force in the distribution of independent yields. At this time pairing systematics have been obtained for /sup 235/U thermal and fast fission yields by a comparison of experimental data to the normal yield curves predicted by the phenomenological model. A semiempirical formalism has been developed and tested (insofar as the available data permits) by which estimates for the magnitudes of the pairing effects can be easily incorporated into the version of the phenomenological model to be used in the ENDF/B-V Fission Product Evaluated Data File. The formalism is based upon the /sup 235/U thermal and fast fission data analysis and has been extended to other proposed ENDF/B-V fissionable nuclides. Neutron energy dependence has been incorporated (in a simple fashion) in terms of excitation energies of the compound system and measured fission barriers. Again, the energy dependence has been expressed in a manner which is easily assimilated by the ENDF/B-V yield model. The initial efforts in this study have been governed by the need to include some quantitative description of the pairing effects within the framework of the existing phenomenological treatment. The results reported herein are thus empirically based and it is to be expected that they will change with the accumulation of more (and better) data. Hopefully this work will provide important clues to a more detailed calculation of the pairing influence as well as other theoretical work in progress.

Madland, D.G.; England, T.R.

1976-07-01T23:59:59.000Z

377

Improving Biomass Yields: High Biomass, Low Input Dedicated Energy Crops to Enable a Full Scale Bioenergy Industry  

SciTech Connect

Broad Funding Opportunity Announcement Project: Ceres is developing bigger and better grasses for use in biofuels. The bigger the grass yield, the more biomass, and more biomass means more biofuel per acre. Using biotechnology, Ceres is developing grasses that will grow bigger with less fertilizer than current grass varieties. Hardier, higher-yielding grass also requires less land to grow and can be planted in areas where other crops can’t grow instead of in prime agricultural land. Ceres is conducting multi-year trials in Arizona, Texas, Tennessee, and Georgia which have already resulted in grass yields with as much as 50% more biomass than yields from current grass varieties.

2010-01-01T23:59:59.000Z

378

Investigation of vesicular – arbuscular mycorrhizal (VAM) on yield quantity and quality of sorghum cultivars under irrigation in arid area  

E-Print Network (OSTI)

the control. Meanwhile, sorghum cultivars showed differentfor high yielding in sorghum when sowing in low irrigationcondition. We exposed sorghum to various treatments just

Moussavinik, Mohsen; Mehraban, Ahmad

2009-01-01T23:59:59.000Z

379

Impact of nitrogen fertilization and the soil type on the quality and yield of sweet sorghum juice  

E-Print Network (OSTI)

ethanol yield while using it for biofuel production, a greatfuel, interest is increasing in biofuel crops such as sweetand profitably used for biofuel production; challenges such

Holou, Roland A; Stevens, Gene

2009-01-01T23:59:59.000Z

380

Fluidized-bed pyrolysis of oil shale: oil yield, composition, and kinetics  

SciTech Connect

A quartz isothermal fluidized-bed reactor has been used to measure kinetics and oil properties relevant to surface processing of oil shale. The rate of oil formation has been described with two sequential first-order rate equations characterized by two rate constants, k/sub 1/ = 2.18 x 10/sup 10/ exp(-41.6 kcal/RT) s/sup -1/ and k/sub 2/ = 4.4 x 10/sup 6/ exp(-29.7 kcal/RT) s/sup -1/. These rate constants together with an expression for the appropriate weighting coefficients describe approximately 97/sup +/% of the total oil produced. A description is given of the results of different attempts to mathematically describe the data in a manner suitable for modeling applications. Preliminary results are also presented for species-selective kinetics of methane, ethene, ethane and hydrogen, where the latter is clearly distinguished as the product of a distinct intermediate. Oil yields from Western oil shale are approximately 100% Fischer assay. Oil composition is as expected based on previous work and the higher heating rates (temperatures) inherent in fluidized-bed pyrolysis. Neither the oil yield, composition nor the kinetics varied with particle size between 0.2 and 2.0 mm within experimental error. The qualitatively expected change in oil composition due to cracking was observed over the temperature range studied (460 to 540/sup 0/C). Eastern shale exhibited significantly faster kinetics and higher oil yields than did Western shale.

Richardson, J H; Huss, E B; Ott, L L; Clarkson, J E; Bishop, M O; Taylor, J R; Gregory, L J; Morris, C J

1982-09-01T23:59:59.000Z

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


381

Excitation-emission spectra and fluorescence quantum yields for fresh and aged biogenic secondary organic aerosols  

SciTech Connect

Certain biogenic secondary organic aerosols (SOA) become absorbent and fluorescent when exposed to reduced nitrogen compounds such as ammonia, amines and their salts. Fluorescent SOA may potentially be mistaken for biological particles by detection methods relying on fluorescence. This work quantifies the spectral distribution and effective quantum yields of fluorescence of SOA generated from two monoterpenes, limonene and a-pinene, and two different oxidants, ozone (O3) and hydroxyl radical (OH). The SOA was generated in a smog chamber, collected on substrates, and aged by exposure to ~100 ppb ammonia vapor in air saturated with water vapor. Absorption and excitation-emission matrix (EEM) spectra of aqueous extracts of aged and control SOA samples were measured, and the effective absorption coefficients and fluorescence quantum yields (~0.005 for 349 nm excitation) were determined from the data. The strongest fluorescence for the limonene-derived SOA was observed for excitation = 420+- 50 nm and emission = 475 +- 38 nm. The window of the strongest fluorescence shifted to excitation = 320 +- 25 nm and emission = 425 +- 38 nm for the a-pinene-derived SOA. Both regions overlap with the excitation-emission matrix (EEM) spectra of some of the fluorophores found in primary biological aerosols. Our study suggests that, despite the low quantum yield, the aged SOA particles should have sufficient fluorescence intensities to interfere with the fluorescence detection of common bioaerosols.

Lee, Hyun Ji; Laskin, Alexander; Laskin, Julia; Nizkorodov, Sergey A.

2013-05-10T23:59:59.000Z

382

Performance Plans | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Performance Plans Performance Plans Performance Plans December 13, 2013 Combined Fiscal Year (FY) 2013 Annual Performance Results and FYs 2014 and 2015 Annual Performance Plan Combined Fiscal Year (FY) 2013 Annual Performance Results and FY 2014-15 Annual Performance Plan December 18, 2012 Combined Fiscal Year (FY) 2012 Annual Performance Results and FYs 2013 and 2014 Annual Performance Plan This report presents the goals, objectives, and strategies for measuring the OIG's FY 2012 actual performance and FYs 2013 and 2014 planned activities. November 28, 2011 Combined Fiscal Year (FY) 2011 Annual Performance Results and FY 2012 Annual Performance Plan This report presents the goals, objectives, and strategies for measuring the OIG's FY 2011 actual performance and FY 2012 planned activities.

383

PERFORMANCE OBJECTIVES FOR TANK FARM CLOSURE PERFORMANCE ASSESSMENTS  

Science Conference Proceedings (OSTI)

This report documents the performance objectives (metrics, times of analyses, and times of compliance) to be used in performance assessments of Hanford Site tank farm closure.

MANN, F.M.; CRUMPLER, J.D.

2005-09-30T23:59:59.000Z

384

US airline industry trends and performance 1999-2004 : analysis of Form 41 data  

E-Print Network (OSTI)

Since 2001, the US airline industry has faced an unprecedented set of challenges. Following the terrorist attacks of September 11, 2001, the airline industry reported tremendous losses and several of the largest US airlines ...

Strina François

2006-01-01T23:59:59.000Z

385

Performance analysis of a file catalog for the LHC computing grid  

Science Conference Proceedings (OSTI)

The Large Hadron Collider (LHC) at CERN, the European Organization for Nuclear Research, needs to produce unprecedented volumes of data when it starts operation in 2007. To provide for its computational needs, the LHC computing grid (LCG) should be deployed ...

J.-P. Baud; J. Casey; S. Lemaitre; C. Nicholson

2005-07-01T23:59:59.000Z

386

High Performance Buildings Database  

DOE Data Explorer (OSTI)

The High Performance Buildings Database is a shared resource for the building industry. The Database, developed by the U.S. Department of Energy and the National Renewable Energy Laboratory (NREL), is a unique central repository of in-depth information and data on high-performance, green building projects across the United States and abroad. The Database includes information on the energy use, environmental performance, design process, finances, and other aspects of each project. Members of the design and construction teams are listed, as are sources for additional information. In total, up to twelve screens of detailed information are provided for each project profile. Projects range in size from small single-family homes or tenant fit-outs within buildings to large commercial and institutional buildings and even entire campuses.

The Database is a data repository as well. A series of Web-based data-entry templates allows anyone to enter information about a building project into the database. Once a project has been submitted, each of the partner organizations can review the entry and choose whether or not to publish that particular project on its own Web site. Early partners using the database include:

  • The Federal Energy Management Program
  • The U.S. Green Building Council
  • The American Institute of Architects' Committee on the Environment
  • The Massachusetts Technology Collaborative
  • Efficiency Vermont
    • Copied (then edited) from http://eere.buildinggreen.com/partnering.cfm

387

Remedial Action Performed  

Office of Legacy Management (LM)

Aliquippa Forge Site Aliquippa Forge Site in Aliquippa, Pennsylvania Department of Energy Former Sites Restoration Division Oak Ridge Operations Office November 1996 CERTIFICATION DOCKE.~ FOR THE REMEDIAL ACTION PERFORMED AT THE ALIQUIPPA FORGE SITE IN ALIQUIPPA, PENNSYLVANIA NOVEMBER 1996 Prepared for . UNITED STATES DEPARTMENT OF ENERGY Oak Ridge Operations Office Under Contract No. DE-AC05-9 1 OR2 1949 Bechtel National, Inc. Oak Ridge, Tennessee Bechtel Job No. 14501 CONTENTS Page FIGURES v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TABLES vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ACRONYMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii UNITSOFMEASURE ix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INTRODUCTION xi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

388

Collusion MARKET PERFORMANCE  

E-Print Network (OSTI)

Advocates of deregulating electricity markets claimed that allowing competition would benefit consumers by increasing efficiency and reducing costs. They viewed electricity as a commodity much like any other, and overlooked the ways in which electricity’s many distinct features hinder the development of competitive market structures. While competitive features were introduced into electricity markets in the last 10 years, the necessary elements for the market structure of competition—large number of sellers, ease of entry, and transparency of information—are still not in place. 1 This bibliography was prepared as an addendum to the 2006 Performance Review of Electric Power Markets

Kenneth Rose, Ph.D.; Karl Meeusen

2007-01-01T23:59:59.000Z

389

Remedial Action Performed  

Office of Legacy Management (LM)

Baker and Williams Baker and Williams Warehouses Site in New York, New York, 7997 - 7993 Department of Energy Former Sites Restoration Division Oak Ridge Operations Office November 7 995 CERTIFICATION DOCKET FOR THE REMEDIAL ACTION PERFORMED AT THE BAKER AND WILLIAMS WAREHOUSES SITE IN NEW YORK, NEW YORK, 1991-1993 NOVEMBER 1995 Prepared for United States Department of Energy Oak Ridge Operations Office Under Contract No. DE-AC05-910R21949 BY Bechtel National, Inc. Oak Ridge, Tennessee Bechtel Job No. 14501 __ CONTENTS .- ~_- _- ..- ^_ FIGURES . ...,.,.....,,........,,.,_.....,.,.,.__,....,,,,, v TABLES ,.,__...,,....,..._._..,,,,_._...,.,.,,.,,,..._,,,, vi ACRONYMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..v~

390

Remedial Action Performed  

Office of Legacy Management (LM)

' ' at the C. H. Schnoor Site, Springdale, Pennsylvania, in 1 994 Department of Energy Former Sites Restoration Division Oak Ridge Operations Office November 1996 CERTIFICATION DOCKET FOR THE REMEDIAL ACTION PERFORMED AT THE C. H. SCHNOOR SITE SPRINGDALE, PENNSYLVANIA, IN 1994 NOVEMBER 1996 prep&ed for United States Department of ~nergy Oak Ridge Operations Off= r Under Contract No. DE-AC05-910R21949 Bechtel National, Inc. Oak Ridge, Tennessee Bechtel Job No. '14501 CONTENTS FIGURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v ACRONYMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi UNITS OF MEASURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

391

Remedial Action Performed  

Office of Legacy Management (LM)

Alba Craft Laboratory and Alba Craft Laboratory and Vicinity Properties Site in Oxford, Ohio C Department of Energy Former Sites Restoration Division Oak Ridge Operations Office January 1997 $$@T Op% 3 @!B . i~d!l Ab Printed on recycled/recyclable paper. CERTIFICATION DOCKET FOR THE REMEDIAL ACTION PERFORMED AT THE FORMER ALBA CRAFT LABORATORY AND VICINITY PROPERTIES SITE IN OXFORD, OHIO JANUARY 1997 Prepared for United States Department of Energy Oak Ridge Operations Office Under Contract No. DE-AC0591 OR2 1949 Bechtel National, Inc. Oak Ridge, Tennessee Bechtel Job No. 14501 CONTENTS Page FIGURES .............................................................................................................................................. v TABLES.. .............................................................................................................................................. vi

392

High Performance Computing School COMSC  

E-Print Network (OSTI)

High Performance Computing School COMSC This module aims to provide the students with fundamental knowledge and understanding of techniques associated with High Performance Computing and its practical' skills in analysing and evaluating High Performance Computing and will be structured around

Martin, Ralph R.

393

Performance of microprocessor controllers  

SciTech Connect

United States animal production systems are at the threshold of a major new method for daily management of environmental control -- the integrated microprocessor-based environmental control system. Widespread adoption of this technology has the potential for dramatic improvement in production efficiencies through lower management costs, improved energy savings, and better feed conversion efficiencies. However, the technical problems of transient surge protection and appropriate mechanical backup systems have not been adequately addressed by the industry. The goals of this research were to identify the degree to which transient surge protection was being provided by current manufacturers, and to illustrate the implementation of microprocessor environmental control systems with mechanical backup. Transient open circuit over-voltage tests (ANSI/IEEE C62.41-1980) were performed on 16 environmental control units: a maximum of 800 V spike was applied to the power supplies, and up to 100 V spike applied to temperature sensor lines. Under these relatively mild tests, no failures were noted due to power supply transients, but three units failed when subjected to transients on their temperature sensor lines. Mechanical backup systems were designed to provide essential life-support during critical conditions of extreme outside conditions and extreme animal densities. The design and installation of environmental control systems for (1) a gestation unit and (2) a broiler house was performed. An overview of the process, and difficulties noted, is presented. Both systems incorporated mechanical backups. 20 refs.

Gates, R.S.; Turner, L.W.; Overhults, D.G. (Kentucky Univ., Lexington, KY (United States). Dept. of Agricultural Engineering)

1992-01-01T23:59:59.000Z

394

Evaluating Steam Trap Performance  

E-Print Network (OSTI)

Laboratory tests were conducted on several types of steam traps at Holston Defense Corporation in Kingsport, Tennessee. Data from these tests, which determined their relative efficiencies, were used in performing economic analyses to determine their equivalent uniform annual cost (EUAC). The comparison was made using a computer program written for the Apple II computer to evaluate overall steam trap economics. This program calculates the EUAC for any steam trap based on 12 input variables including capital, maintenance and steam costs, interest rate and trap life. After determinIng the EUAC, the program will perform sensitivity analyses on any of the twelve variables. (This computer program is available from the author.) This study shows that inverted bucket traps have lower EUAC's under more conditions than other types of traps. Also, this study shows that live steam loss is the heaviest contributor to the annual operating cost of any steam trap and that maintenance frequency and repair cost are also more important than a trap's first cost.

Fuller, N. Y.

1986-06-01T23:59:59.000Z

395

NETL: Onsite Research- Materials Performance  

NLE Websites -- All DOE Office Websites (Extended Search)

Materials Performance Onsite Research Materials Performance Emerging energy-production technologies such as gasification, solid oxide fuel cells, and ultra supercritical, fluidized...

396

Integrated Planning and Performance Management  

NLE Websites -- All DOE Office Websites (Extended Search)

Performance Management (IPPM) Head Program Administrator Planning Coordination Performance Analysis Chief Operating Officer Risk Analysis Lab PlanningGoal Setting Process ...

397

High Performance Computing: Modeling & Simulation  

NLE Websites -- All DOE Office Websites (Extended Search)

High Performance Computing: Modeling & Simulation High Performance Computing: Modeling & Simulation Express Licensing Adaptive Real-Time Methodology for Optimizing Energy-Efficient...

398

Contractor Past Performance Information  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1 1 CPAR Quality Checklist (DOE version December 2009) updated December 2010 This checklist will guide you in creating a quality CPAR which allows a reader, with no personal knowledge of your program/effort, to gain a complete understanding of the Contractor's performance. Taking the time to prepare an accurate and complete CPAR helps ensure better quality in the products and services we buy now and those we plan to buy in the future! Name: Date: Schedule # (for GSA orders): Contract Number: Order Number: Blocks 1 - 17: Registered Info is Accurate & Complete X Item Remarks Block 1: DUNS, FSC (PSC) and NAICS codes are correct. [NOTE: At some time auto-registration will be available for the civilian agency version of CPARS. When auto-

399

Method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system  

DOE Patents (OSTI)

A method is disclosed improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system for hydrogen generation. The method comprises forming an aqueous solution comprising an electron donor, methylviologen, and certain metalloporphyrins and metallochlorins, and irradiating said aqueous solution with light in the presence of a catalyst. In the photosynthesis process, solar energy is collected and stored in the form of a hydrogen. Ligands attached above and below the metalloporphyrin and metallochlorin plane are capable of sterically blocking photochemically inactive electrostatically bound ..pi..-..pi.. complexes which can develop.

Shelnutt, J.A.

1984-11-29T23:59:59.000Z

400

Method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system  

DOE Patents (OSTI)

A method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system for hydrogen generation which comprises forming an aqueous solution comprising an electron donor, methylviologen, and certain metalloporphyrins and metallochlorins, and irradiating said aqueous solution with light in the presence of a catalyst. In the photosynthesis process, solar energy is collected and stored in the form of a gas hydrogen. Ligands attached above and below the metalloporphyrin and metallochlorin plane are capable of sterically blocking photochemically inactive electrostatically bound .pi.--.pi. complexes which can develop.

Shelnutt, John A. (Albuquerque, NM)

1986-01-01T23:59:59.000Z

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


401

Performance of Quantized Congestion Notification in TCP Incast in Data Centers  

E-Print Network (OSTI)

This thesis analyzes the performance of Quantized Congestion Notification (QCN) during data access from clustered servers in data centers. The reasons why QCN does not perform adequately in these situations are examined and several modifications are proposed to the protocol to improve its performance in these scenarios. The causes of QCN performance degradation are traced to flow rate variability, and it is shown that adaptive sampling at the switch and adaptive self-increase of flow rates at the QCN rate limiter significantly enhance QCN performance in a TCP Incast setup. The performance of QCN is compared against TCP modifications in a heterogeneous environment, and it is shown that modifications to QCN yield better performance. Finally, the performance of QCN with the proposed modifications is compared with that of unmodified QCN in other workloads to show that the modifications do not negatively affect QCN performance in general.

Devkota, Prajjwal Prasad

2010-05-01T23:59:59.000Z

402

Preservation of interactive multimedia performances  

Science Conference Proceedings (OSTI)

Preservation of Interactive Multimedia Performances (IMPs) is becoming important, as they are getting more and more popular in the performing arts communities. Preservation requires keeping not only all the necessary components for the production ... Keywords: IMP, cataloguing, digital preservation, interactive multimedia performances, ontologies, performing arts, querying, search, semantic processing

Kia Ng; Tran Vu Pham; Bee Ong; Alexander Mikroyannidis; David Giaretta

2008-07-01T23:59:59.000Z

403

Integrated System Dramatically Improves Hydrogen Molar Yield from Biomass via Fermentation (Fact Sheet)  

Science Conference Proceedings (OSTI)

This fact sheet describes NREL's accomplishments in fermentative and electrohydrogenic production of hydrogen from corn stover. Work was performed by NREL's Biosciences Center and Pennsylvania State University.

Not Available

2010-11-01T23:59:59.000Z

404

Convergent ablator performance measurements  

Science Conference Proceedings (OSTI)

The velocity and remaining ablator mass of an imploding capsule are critical metrics for assessing the progress toward ignition of an inertially confined fusion experiment. These and other convergent ablator performance parameters have been measured using a single streaked x-ray radiograph. Traditional Abel inversion of such a radiograph is ill-posed since backlighter intensity profiles and x-ray attenuation by the ablated plasma are unknown. To address this we have developed a regularization technique which allows the ablator density profile {rho}(r) and effective backlighter profile I{sub 0}(y) at each time step to be uniquely determined subject to the constraints that {rho}(r) is localized in radius space and I{sub 0}(y) is delocalized in object space. Moments of {rho}(r) then provide the time-resolved areal density, mass, and average radius (and thus velocity) of the remaining ablator material. These results are combined in the spherical rocket model to determine the ablation pressure and mass ablation rate during the implosion. The technique has been validated on simulated radiographs of implosions at the National Ignition Facility [Miller et al., Nucl. Fusion 44, 228 (2004)] and implemented on experiments at the OMEGA laser facility [Boehly et al., Opt. Commun. 133, 495 (1997)].

Hicks, D. G.; Spears, B. K.; Braun, D. G.; Sorce, C. M.; Celliers, P. M.; Collins, G. W.; Landen, O. L. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Olson, R. E. [Sandia National Laboratory, Albuquerque, New Mexico 87185 (United States)

2010-10-15T23:59:59.000Z

405

High Performance Network Monitoring  

SciTech Connect

Network Monitoring requires a substantial use of data and error analysis to overcome issues with clusters. Zenoss and Splunk help to monitor system log messages that are reporting issues about the clusters to monitoring services. Infiniband infrastructure on a number of clusters upgraded to ibmon2. ibmon2 requires different filters to report errors to system administrators. Focus for this summer is to: (1) Implement ibmon2 filters on monitoring boxes to report system errors to system administrators using Zenoss and Splunk; (2) Modify and improve scripts for monitoring and administrative usage; (3) Learn more about networks including services and maintenance for high performance computing systems; and (4) Gain a life experience working with professionals under real world situations. Filters were created to account for clusters running ibmon2 v1.0.0-1 10 Filters currently implemented for ibmon2 using Python. Filters look for threshold of port counters. Over certain counts, filters report errors to on-call system administrators and modifies grid to show local host with issue.

Martinez, Jesse E [Los Alamos National Laboratory

2012-08-10T23:59:59.000Z

406

NETL: News Release - DOE's Microhole R&amp;D Program Yielding Promising New  

NLE Websites -- All DOE Office Websites (Extended Search)

22, 2007 22, 2007 DOE's Microhole R&D Program Yielding Promising New Tools Ambitious Program Aims to Reduce Costs, Environmental Impacts of Oil and Gas Well Drilling WASHINGTON, DC - New technology being developed under the U.S. Department of Energy's ambitious two-year-old Microhole Initiative is already yielding new tools perched on the edge of commercialization. Some of these tools, designed to drill ultrasmall-diameter natural gas and oil wells, have been successfully field-tested in real-world drilling conditions and await a final decision in 2007 for full-scale commercialization. Other microhole projects are wrapping up and will soon move into the field-test stage. Microhole technology, by virtue of its ability to dramatically reduce drilling costs, risks, and environmental impacts, could change the way America's oil and natural gas wells are drilled. It entails using coiled tubing drilling rigs -- small, easily transportable rigs that unspool coils of thin tubing -- to drill "grassroots" wells with diameters of less than 4-1/2 inches or equally small-diameter "sidetrack" boreholes from existing wells. This approach leaves a much smaller footprint in environmentally sensitive areas and produces much less drilling waste compared with the more cumbersome conventional rigs that deploy standard-size drill pipe to drill larger-diameter holes.

407

Redirecting carbon flux through exogenous pyruvate kinase to achieve high ethanol yields in Clostridium thermocellum  

NLE Websites -- All DOE Office Websites (Extended Search)

Redirecting Redirecting carbon flux through exogenous pyruvate kinase to achieve high ethanol yields in Clostridium thermocellum Yu Deng a,c , Daniel G. Olson a,c , Jilai Zhou a,c , Christopher D. Herring a,b,c , A. Joe Shaw d , Lee R. Lynd a,b,c,n a Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA b Mascoma Corporation, Lebanon, NH 03766, USA c BioEnergy Science Center, Oak Ridge, TN 37830, USA d Novogy, Inc. Cambridge, MA 02138, USA a r t i c l e i n f o Article history: Received 24 August 2012 Received in revised form 6 November 2012 Accepted 16 November 2012 Available online 29 November 2012 Keywords: Clostridium thermocellum Ethanol yield Pyruvate kinase Malate shunt a b s t r a c t In Clostridium thermocellum, a thermophilic anaerobic bacterium able to rapidly ferment cellulose to ethanol, pyruvate kinase (EC 2.7.1.40) is absent based on both the genome sequence and enzymatic

408

The Effects of Nitrogen Fertilization on Bioenergy Sorghum Yield and Quality  

E-Print Network (OSTI)

Forage sorghum (Sorghum bicolor L. Moench) is one of the prospective crops that may be used to produce biofuels in the future. Therefore, it is of interest to find management practices that improve both the production of biomass yield and quality. This study presents observations of the effects different rates of nitrogen fertilization have on yield, tissue nitrogen content, and tissue quality measures such as ash, lignin, sucrose, xylans, cellulose and starch content, based on three years of field trials from the Brazos Bottom and one year of field trials from near China, Texas. Data for the quality components were obtained using near infrared spectroscopy, with the exception of tissue nitrogen which was determined by using the dry combustion method. This study has showed fertilizer nitrogen had a strong positive correlation with the tissue nitrogen of sorghum biomass. Changes in tissue quality in relationship with fertilizer nitrogen levels and tissue nitrogen concentration were also observed. Ash showed a strong positive and sucrose showed a strong negative correlation to both tissue nitrogen concentration and fertilizer nitrogen application. Similarly to sucrose, starch also decreased with higher nitrogen levels and lignin was found to increase slightly. The concentration of cellulose and xylans were very weakly affected by nitrogen application and nitrogen concentration.

Zilahi-Sebess, Szilvia

2012-05-01T23:59:59.000Z

409

Polar-drive designs for optimizing neutron yields on the National Ignition Facility  

SciTech Connect

Polar-drive designs are proposed for producing symmetric implosions of thin-shell, DT gas-filled targets leading to high fusion-neutron yields for neutron-diagnostic development. The designs can be implemented as soon as the National Ignition Facility (NIF) [E. M. Campbell and W. J. Hogan, Plasma Phys. Control. Fusion 41, B39 (1999)] is operational as they use indirect-drive phase plates. Two-dimensional simulations using the hydrodynamics code SAGE [R. S. Craxton and R. L. McCrory, J. Appl. Phys. 56, 108 (1984)] have shown that good low-mode uniformity can be obtained by choosing combinations of pointing and defocusing of the beams, including pointing offsets of individual beams within some of the NIF laser-beam quads. The optimizations have been carried out for total laser energies ranging from 350 kJ to 1.5 MJ, enabling the optimum pointing and defocusing parameters to be determined through interpolation for any given laser energy in this range. Neutron yields in the range of 10{sup 15}-10{sup 16} are expected.

Cok, A. M.; Craxton, R. S.; McKenty, P. W. [Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623 (United States)

2008-08-15T23:59:59.000Z

410

Detecting H{yields}hh in the mirror model at the CERN Large Hadron Collider  

SciTech Connect

The Higgs sector may play an important role in detecting mirror particles, which can be the candidates of dark matter and appear as missing energy in the detectors at the LHC. In this paper we worked out the Higgs boson spectrum and the Higgs couplings for the symmetric vacuum, namely v{sub 1}=v{sub 2}=v, in the mirror model, and investigated the constraints from electroweak precision observables. Our study showed that electroweak precision observables have already constrained the Higgs boson sector severely. We then explored the Higgs boson phenomenology, and focused on the scenario that the heavier Higgs boson H can decay into a pair of lighter Higgs bosons h. We proposed to study the invisible decay of the Higgs boson via the pair production of them, in which one Higgs boson decays into bottom quarks and the other decays invisibly. Our detail simulation for signals and backgrounds showed that the observation of the signal can reach 5{sigma} significance for m{sub H}=260 GeV and m{sub h}=115 GeV with 10 fb{sup -1} integrated luminosity at the LHC. Moreover the possible method to further suppress dominant Zbb background was discussed. We also simulated the signals and backgrounds for H{yields}hh{yields}4b. Our results showed that it is very difficult to isolate the signals from huge QCD continuum backgrounds.

Li Wensheng; Yin Pengfei; Zhu Shouhua [Institute of Theoretical Physics, School of Physics, Peking University, Beijing 100871 (China)

2007-11-01T23:59:59.000Z

411

Revisiting the total ion yield x-ray absorption spectra of liquid water microjets  

SciTech Connect

Measurements of the total ion yield (TIY) x-ray absorption spectrum (XAS) of liquid water by Wilson et al. (2002 J. Phys.: Condens. Matter 14 L221 and 2001 J. Phys. Chem. B 105 3346) have been revisited in light of new experimental and theoretical efforts by our group. Previously, the TIY spectrum was interpreted as a distinct measure of the electronic structure of the liquid water surface. However, our new results indicate that the previously obtained spectrum may have suffered from as yet unidentified experimental artifacts. Although computational results indicate that the liquid water surface should exhibit a TIY-XAS that is fundamentally distinguishable from the bulk liquid XAS, the new experimental results suggest that the observable TIY-XAS is actually nearly identical in appearance to the total electron yield (TEY-)XAS, which is a bulk probe. This surprising similarity between the observed TIY-XAS and TEY-XAS likely results from large contributions from x-ray induced electron stimulated desorption of ions, and does not necessarily indicate that the electronic structure of the bulk liquid and liquid surface are identical.

Saykally, Richard J; Cappa, Chris D.; Smith, Jared D.; Wilson, Kevin R.; Saykally, Richard J.

2008-02-16T23:59:59.000Z

412

Annual Performance Report FY 2011 Annual Performance Plan FY 2012  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Annual Performance Report FY 2011 Annual Performance Plan FY 2012 2 FY 2011 OIG Performance Results The OIG measures its performance against long-term and annual goals set forth in OIG planning documents. During this reporting period, the OIG successfully achieved its FY 2011 performance goals. The following are the specific results: Goal 1 Promote Presidential Reform Initiatives, Secretarial Mission Priorities, and Congress Objective 1: Conduct reviews seeking positive change in the Department relating to the implementation of Presidential Reform Initiatives, the Secretary's Mission Priorities, and the OIG-identified Management Challenges. Performance Measures: Accomplishments

413

Observation of the Cabibbo-Suppressed Decay {xi}{sup +}{sub c} {yields} pK{sup -} {pi}{sup +}  

SciTech Connect

We report the first observation of the Cabibbo-suppressed charm baryon decay {xi}{sup +}{sub c}{yields}pK{sup -}{pi}{sup +} . We observe 150{+-}22{+-}5 events for the signal. The data were accumulated using the SELEX spectrometer during the 1996-1997 fixed target run at Fermilab, chiefly from a 600 GeV/c {sigma}{sup -} beam. The branching fractions of the decay relative to the Cabibbo-favored {xi}{sup +}{sub c}{yields}{sigma}{sup +}K{sup -}{pi}{sup +} and {xi}{sup +}{sub c}{yields} {xi}{sup -}{pi}{sup +}{pi}{sup +} are measured to be B({xi}{sup +}{sub c}{yields}pK{sup -}{pi}{sup +})/B({xi}{sup +}{sub c} {yields}{sigma}{sup +}K{sup -}{pi}{sup +}) =0.22{+-}0.06{+-}0.03 and B({xi}{sup +}{sub c}{yields}pK{sup -}{pi}{sup +})/B({xi}{sup +}{sub c} {yields}{xi}{sup -}{pi}{sup +}{pi}{sup +} )=0.20{+-}0.04{+-}0.02 , respectively. (c) 2000 The American Physical Society.

Jun, S. Y. [Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213 (United States)] [Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213 (United States); Akchurin, N. [University of Iowa, Iowa City, Iowa 52242 (United States)] [University of Iowa, Iowa City, Iowa 52242 (United States); Andreev, V. A. [Petersburg Nuclear Physics Institute, St. Petersburg, Russia (Russian Federation)] [Petersburg Nuclear Physics Institute, St. Petersburg, Russia (Russian Federation); Atamantchouk, A. G. [Petersburg Nuclear Physics Institute, St. Petersburg, Russia (Russian Federation)] [Petersburg Nuclear Physics Institute, St. Petersburg, Russia (Russian Federation); Aykac, M. [University of Iowa, Iowa City, Iowa 52242 (United States)] [University of Iowa, Iowa City, Iowa 52242 (United States); Balatz, M. Y. [Institute of Theoretical and Experimental Physics, Moscow, Russia (Russian Federation)] [Institute of Theoretical and Experimental Physics, Moscow, Russia (Russian Federation); Bondar, N. F. [Petersburg Nuclear Physics Institute, St. Petersburg, Russia (Russian Federation)] [Petersburg Nuclear Physics Institute, St. Petersburg, Russia (Russian Federation); Bravar, A. [University of Trieste and INFN, Trieste, (Italy)] [University of Trieste and INFN, Trieste, (Italy); Cooper, P. S. [Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)] [Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States); Dauwe, L. J. [University of Michigan-Flint, Flint, Michigan 48502 (United States)] (and others) [University of Michigan-Flint, Flint, Michigan 48502 (United States)

2000-02-28T23:59:59.000Z

414

The role of carbon finance in enhancing building performance in developing countries  

E-Print Network (OSTI)

Buildings in developing countries (DCs) will play a significant role in global GHG emission mitigation in the next decades (IPCC, 2007; IEA,2008). According to the UN World Urbanization Prospects report (2005 revision), 60 percent (4.9 billion) of world population will live in cites by 2030, most of them in DCs. The unprecedented urbanization in these countries poses a huge challenge for environment since most of buildings are built quickly and cheaply to accommodate new immigrants and the energy performance is often considered second priority. Implementation of energy efficiency in buildings confronts both technical and institutional barriers. Enabling environmental sustainability buildings with economic benefits and welfare improvement is the major concerns on the policy agenda in DCs. Therefore how to articulate sustainable urban development and emissions reduction policies in DCs will be of considerable importance in the post-Kyoto climate regime negotiation. Considerable investment will be required to allow the uptake of climate-friendly technologies and capacity building, thus financial assistance and technology transfer from developed countries to DCs is likely to play increasingly important role.

Li, J.

2009-11-01T23:59:59.000Z

415

Hydrogen engine performance analysis project. Second annual report  

DOE Green Energy (OSTI)

Progress in a 3 year research program to evaluate the performance and emission characteristics of hydrogen-fueled internal combustion engines is reported. Fifteen hydrogen engine configurations will be subjected to performance and emissions characterization tests. During the first two years, baseline data for throttled and unthrottled, carburetted and timed hydrogen induction, Pre IVC hydrogen-fueled engine configurations, with and without exhaust gas recirculation (EGR) and water injection, were obtained. These data, along with descriptions of the test engine and its components, the test apparatus, experimental techniques, experiments performed and the results obtained, are given. Analyses of other hydrogen-engine project data are also presented and compared with the results of the present effort. The unthrottled engine vis-a-vis the throttled engine is found, in general, to exhibit higher brake thermal efficiency. The unthrottled engine also yields lower NO/sub x/ emissions, which were found to be a strong function of fuel-air equivalence ratio. (LCL)

Adt, Jr., R. R.; Swain, M. R.; Pappas, J. M.

1980-01-01T23:59:59.000Z

416

ENDF/B-VII.1 Nuclear Data for Science and Technology: Cross Sections, Covariances, Fission Product Yields and Decay Data  

Science Conference Proceedings (OSTI)

The ENDF/B-VII.1 library is our latest recommended evaluated nuclear data file for use in nuclear science and technology applications, and incorporates advances made in the five years since the release of ENDF/B-VII.0. These advances focus on neutron cross sections, covariances, fission product yields and decay data, and represent work by the US Cross Section Evaluation Working Group (CSEWG) in nuclear data evaluation that utilizes developments in nuclear theory, modeling, simulation, and experiment. The principal advances in the new library are: (1) An increase in the breadth of neutron reaction cross section coverage, extending from 393 nuclides to 423 nuclides; (2) Covariance uncertainty data for 190 of the most important nuclides, as documented in companion papers in this edition; (3) R-matrix analyses of neutron reactions on light nuclei, including isotopes of He; Li, and Be; (4) Resonance parameter analyses at lower energies and statistical high energy reactions for isotopes of Cl; K; Ti, V, Mn, Cr, Ni, Zr and W; (5) Modifications to thermal neutron reactions on fission products (isotopes of Mo, Tc, Rh, Ag, Cs, Nd, Sm, Eu) and neutron absorber materials (Cd, Gd); (6) Improved minor actinide evaluations for isotopes of U, Np, Pu, and Am (we are not making changes to the major actinides (235,238)U and (239)Pu at this point, except for delayed neutron data and covariances, and instead we intend to update them after a further period of research in experiment and theory), and our adoption of JENDL-4.0 evaluations for isotopes of Cm, Bk, Cf, Es; Fm; and some other minor actinides; (7) Fission energy release evaluations; (8) Fission product yield advances for fission-spectrum neutrons and 14 MeV neutrons incident on (239)Pu; and (9) A new decay data sublibrary. Integral validation testing of the ENDF/B-VII.1 library is provided for a variety of quantities: For nuclear criticality, the VII.1 library maintains the generally-good performance seen for VII.0 for a wide range of MCNP simulations of criticality benchmarks, with improved performance coming from new structural material evaluations, especially for Ti, Mn, Cr, Zr and W. For Be we see some improvements although the fast assembly data appear to be mutually inconsistent. Actinide cross section updates are also assessed through comparisons of fission and capture reaction rate measurements in critical assemblies and fast reactors, and improvements are evident. Maxwellian-averaged capture cross sections at 30 keV are also provided for astrophysics applications. We describe the cross section evaluations that have been updated for ENDF/B-VII.1 and the measured data and calculations that motivated the changes, and therefore this paper augments the ENDF/B-VII.0 publication [H.

Chadwick, M. B. [Los Alamos National Laboratory (LANL); Herman, Micheal W [Brookhaven National Laboratory (BNL); Oblozinsky, Pavel [Brookhaven National Laboratory (BNL); Dunn, Michael E [ORNL; Danon, Y. [Rensselaer Polytechnic Institute (RPI); Kahler, A. [Los Alamos National Laboratory (LANL); Smith, Donald L. [Argonne National Laboratory (ANL); Pritychenko, B [Brookhaven National Laboratory (BNL); Arbanas, Goran [ORNL; Arcilla, r [Brookhaven National Laboratory (BNL); Brewer, R [Los Alamos National Laboratory (LANL); Brown, D A [Brookhaven National Laboratory (BNL); Capote, R. [International Atomic Energy Agency (IAEA); Carlson, A. D. [National Institute of Standards and Technology (NIST); Cho, Y S [Korea Atomic Energy Research Institute; Derrien, Herve [ORNL; Guber, Klaus H [ORNL; Hale, G. M. [Los Alamos National Laboratory (LANL); Hoblit, S [Brookhaven National Laboratory (BNL); Holloway, Shannon T. [Los Alamos National Laboratory (LANL); Johnson, T D [Brookhaven National Laboratory (BNL); Kawano, T. [Los Alamos National Laboratory (LANL); Kiedrowski, B C [Los Alamos National Laboratory (LANL); Kim, H [Korea Atomic Energy Research Institute; Kunieda, S [Los Alamos National Laboratory (LANL); Larson, Nancy M [ORNL; Leal, Luiz C [ORNL; Lestone, J P [Los Alamos National Laboratory (LANL); Little, R C [Los Alamos National Laboratory (LANL); Mccutchan, E A [Brookhaven National Laboratory (BNL); Macfarlane, R E [Los Alamos National Laboratory (LANL); MacInnes, M [Los Alamos National Laboratory (LANL); Matton, C M [Lawrence Livermore National Laboratory (LLNL); Mcknight, R D [Argonne National Laboratory (ANL); Mughabghab, S F [Brookhaven National Laboratory (BNL); Nobre, G P [Brookhaven National Laboratory (BNL); Palmiotti, G [Idaho National Laboratory (INL); Palumbo, A [Brookhaven National Laboratory (BNL); Pigni, Marco T [ORNL; Pronyaev, V. G. [Institute of Physics and Power Engineering (IPPE), Obninsk, Russia; Sayer, Royce O [ORNL; Sonzogni, A A [Brookhaven National Laboratory (BNL); Summers, N C [Lawrence Livermore National Laboratory (LLNL); Talou, P [Los Alamos National Laboratory (LANL); Thompson, I J [Lawrence Livermore National Laboratory (LLNL); Trkov, A. [Jozef Stefan Institute, Slovenia; Vogt, R L [Lawrence Livermore National Laboratory (LLNL); Van der Marck, S S [Nucl Res & Consultancy Grp, Petten, Netherlands; Wallner, A [University of Vienna, Austria; White, M C [Los Alamos National Laboratory (LANL); Wiarda, Dorothea [ORNL; Young, P C [Los Alamos National Laboratory (LANL)

2011-01-01T23:59:59.000Z

417

Evidence for. rho. sub 1 (1600) from the decay J/. psi. yields. pi. sup minus. pi. sup +. pi. sup 0  

Science Conference Proceedings (OSTI)

Data from MARK 3 on the decay J/{psi} {yields} {pi}{sup {minus}}{pi}{sup +}{pi}{sup 0} are described in terms of amplitudes representing the sequential two-body decay processes J/{psi} {yields} {rho}{pi}, {rho}{yields}{pi}{pi}. It is found that a complete description requires contributions from excited J{sup PC} = 1{sup --} states in addition to the dominant contribution form the {rho}(770). The characteristics of these additional states are discussed. 11 refs., 6 figs.

Chen, Liang-Ping (Vanderbilt Univ., Nashville, TN (United States)); Dunwoodie, W. (Stanford Linear Accelerator Center, Menlo Park, CA (United States))

1991-10-01T23:59:59.000Z

418

Yields of ten and eleven year-old hybrid poplars in the north central United States. Final report  

SciTech Connect

The objective of this research is to determine commercially attainable biomass yields given the best site tending possible under the constraints of this extensive network. Biomass yields are reported from the best clones planted in one acre blocks on 8 sites over the four states. Biomass yields are presented of short rotation intensively cultured poplar plantations established in Wisconsin, Minnesota, North and South Dakota during 1987--88. It was reported at that time that the mean annual increment had not peaked in the plantations. Growth measurements were continued through the 1997 growing season when the plantations had completed their 10th and 11th growing season.

Netzer, D.; Tolsted, D.

1998-12-31T23:59:59.000Z

419

American Institute of Aeronautics and Astronautics PERFORMANCE INVESTIGATION OF SMALL GAS TURBINE ENGINES  

E-Print Network (OSTI)

American Institute of Aeronautics and Astronautics 1 PERFORMANCE INVESTIGATION OF SMALL GAS TURBINE and topped engines. INTRODUCTION Gas turbines are typical power sources used in a wide size range, development, and application of small gas turbines yielding high power density and enabling low-cost air

Müller, Norbert

420

Improving Performance and Quality of Working Life: A Model for Organizational Health  

E-Print Network (OSTI)

Improving Performance and Quality of Working Life: A Model for Organizational Health Assessment of organizational health blends the pursuit of individual wellness with organiza- tional effectiveness to yield a strategy for economic resilience. This article introduces a novel model for organizational health

Huang, Samuel H.

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421

Remote performance check and automated failure identification for grid-connected PV systems  

E-Print Network (OSTI)

energy yield against an expected, simulated value. A PV simulation model, which employs inexpensiveRemote performance check and automated failure identification for grid-connected PV systems reliable operation of small systems up to 5 kWp. The detection and identification of a failure is strongly

Heinemann, Detlev

422

Measurement of ratio R = (BR(D{sup 0}{yields}K{pi}{pi}{pi})/BR(D{sup 0}{yields}K{pi})) in {pi}{sup -}-Nucleus interactions at 500 GeV/c  

SciTech Connect

We report a very preliminary result on the measurement of the ratio of branching ratios, for two decays D{sup 0} meson, R = (BR(D{sup 0}{yields}K{pi}{pi}{pi})/BR(D{sup 0}{yields}K{pi})), using data from the E791 experiment. We find R = 1.96{+-}0.0286 (stat){+-}0.06 (sys). This is in agreement with and of similar precision to the current PDG average value 1.97{+-}0.09.

Solano Salinas, C. J. [Instituto de Fisica, Universidad Nacional de Ingenieria (Peru); CINVESTAV Merida (Mexico); Paucarchuco, C. [Instituto de Fisica, Universidad Nacional de Ingenieria (Peru); Fernandez, A. [Benemerita Universidad Autonoma de Puebla (Mexico); Sheaff, M. [University of Wisconsin (United States)

2007-10-26T23:59:59.000Z

423

Metabolic engineering of Caldicellulosiruptor bescii yields increased hydrogen production from lignocellulosic biomass  

NLE Websites -- All DOE Office Websites (Extended Search)

Metabolic Metabolic engineering of Caldicellulosiruptor bescii yields increased hydrogen production from lignocellulosic biomass Minseok Cha 1,3 , Daehwan Chung 1,3 , James G Elkins 2,3 , Adam M Guss 2,3 and Janet Westpheling 1,3* Abstract Background: Members of the anaerobic thermophilic bacterial genus Caldicellulosiruptor are emerging candidates for consolidated bioprocessing (CBP) because they are capable of efficiently growing on biomass without conventional pretreatment. C. bescii produces primarily lactate, acetate and hydrogen as fermentation products, and while some Caldicellulosiruptor strains produce small amounts of ethanol C. bescii does not, making it an attractive background to examine the effects of metabolic engineering. The recent development of methods for genetic manipulation has set the stage for rational engineering of this genus for improved biofuel

424

Synthesis of a high-yield activated carbon by air gasification of macadamia nut shell charcoal  

Science Conference Proceedings (OSTI)

Macadamia nut shell charcoal was heated in an inert environment to temperatures above 1000 K (carbonized), reacted with oxygen (Po{sub 2} = 2.68--11.3 kPa) at temperatures between 525 and 586 K (oxygenated), and heated again in an inert environment to temperatures above 1000 K (activated) to produce an activated carbon. Carbons produced by this process possess surface areas and iodine numbers in the range of 400--550. Overall yields of these carbons (based on the dry, raw macadamia nut shell feed) ranged from 24 to 30 wt %. Under the conditions employed in this work, the rates of chemisorption and gasification were not mass transfer limited. Initially, the gasification reaction was first-order with respect to oxygen concentration but became independent of oxygen concentration as the surface sites of the carbon became saturated with oxygen.

Dai, X.; Antal, M.J. Jr. [Univ. of Hawaii at Manoa, Honolulu, HI (United States)

1999-09-01T23:59:59.000Z

425

JGI Plumbs Termite Guts to Yield Novel Enzymes for Better Biofuel  

NLE Websites -- All DOE Office Websites (Extended Search)

21, 2007 21, 2007 DOE JGI Plumbs Termite Guts to Yield Novel Enzymes for Better Biofuel Production WALNUT CREEK, CA--Termites -- notorious for their voracious appetite for wood, rendering houses to dust and causing billions of dollars in damage per year -- may provide the biochemical means to a greener biofuel future. The bellies of these tiny beasts actually harbor a gold mine of microbes that have now been tapped as a rich source of enzymes for improving the conversion of wood or waste biomass to valuable biofuels. Termites of the genus Nasutitermes. The genomic sequencing and analysis of the termite gut microbes by the U.S. Department of Energy Joint Genome Institute (DOE JGI), the California Institute of Technology, Verenium Corporation (formerly Diversa), a

426

Precision Measurement of the Quasifree pn{yields}d{phi} Reaction Close to Threshold  

SciTech Connect

The quasifree pn{yields}d{phi} reaction has been studied at the Cooler Synchrotron COSY--Juelich, using the internal proton beam incident on a deuterium cluster-jet target and detecting a fast deuteron in coincidence with the K{sup +}K{sup -} decay of the {phi} meson. The energy dependence of the total and differential cross sections are extracted for excess energies up to 80 MeV by determining the Fermi momentum of the target neutron on an event-by-event basis. Though these cross sections are consistent with s-wave production, the kaon angular distributions show the presence of p waves at quite a low energy. Production on the neutron is found to be stronger than on the proton but not by as much as for the {eta} meson.

Maeda, Y. [Institut fuer Kernphysik, Forschungszentrum Juelich, 52425 Juelich (Germany); Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047 (Japan); Hartmann, M.; Buescher, M.; Hejny, V.; Koch, H. R.; Nekipelov, M.; Ohm, H.; Schleichert, R.; Stein, H. J.; Stroeher, H.; Watzlawik, K. H. [Institut fuer Kernphysik, Forschungszentrum Juelich, 52425 Juelich (Germany); Keshelashvili, I. [Institut fuer Kernphysik, Forschungszentrum Juelich, 52425 Juelich (Germany); High Energy Physics Institute, Tbilisi State University, 0186 Tbilisi (Georgia); Barsov, S.; Koptev, V.; Mikirtytchiants, S.; Valdau, Yu. [High Energy Physics Department, Petersburg Nuclear Physics Institute, 188350 Gatchina (Russian Federation); Dzyuba, A. [Institut fuer Kernphysik, Forschungszentrum Juelich, 52425 Juelich (Germany); High Energy Physics Department, Petersburg Nuclear Physics Institute, 188350 Gatchina (Russian Federation); Dymov, S. [Laboratory of Nuclear Problems, Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation); Kacharava, A. [High Energy Physics Institute, Tbilisi State University, 0186 Tbilisi, Georgia (United States); Physikalisches Institut II, Universitaet Erlangen-Nuernberg, 91058 Erlangen (Germany); Kleber, V. [Physikalisches Institut, Universitaet Bonn, 53115 Bonn (Germany)] (and others)

2006-10-06T23:59:59.000Z

427

{sup 3}He+{sup 4}He {yields} {sup 7}Be astrophysical S factor  

SciTech Connect

We present precision measurements of the {sup 3}He+{sup 4}He {yields} {sup 7}Be reaction in the range E{sub c.m.}=0.33 to 1.23 MeV using a small gas cell and detection of both prompt {gamma} rays and {sup 7}Be activity. Our prompt and activity measurements are in good agreement within the experimental uncertainty of several percent. We find S(0)=0.595{+-}0.018 keV b from fits of the Kajino theory to our data. We compare our results with published measurements, and we discuss the consequences for Big Bang Nucleosynthesis and for solar neutrino flux calculations.

Brown, T. A. D.; Bordeanu, C.; Snover, K. A.; Storm, D. W.; Melconian, D.; Sallaska, A. L.; Sjue, S. K. L.; Triambak, S. [Center for Experimental Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195 (United States)

2007-11-15T23:59:59.000Z

428

Correlation between surface chemistry and ion energy dependence of the etch yield in multicomponent oxides etching  

Science Conference Proceedings (OSTI)

The influence of surface chemistry in plasma etching of multicomponent oxides was investigated through measurements of the ion energy dependence of the etch yield. Using pulsed-laser-deposited Ca{sub x}Ba{sub (1-x)}Nb{sub 2}O{sub 6} (CBN) and SrTiO{sub 3} thin films as examples, it was found that the etching energy threshold shifts toward values larger or smaller than the sputtering threshold depending on whether or not ion-assisted chemical etching is the dominant etching pathway and whether surface chemistry is enhancing or inhibiting desorption of the film atoms. In the case of CBN films etched in an inductively coupled Cl{sub 2} plasma, it is found that the chlorine uptake is inhibiting the etching reaction, with the desorption of nonvolatile NbCl{sub 2} and BaCl{sub 2} compounds being the rate-limiting step.

Berube, P.-M.; Poirier, J.-S.; Margot, J.; Stafford, L. [Departement de Physique, Universite de Montreal, C.P. 6128, Succ. Centre-ville, Montreal, Quebec H3C 3J7 (Canada); Ndione, P. F.; Chaker, M.; Morandotti, R. [INRS-EMT, 1650 Boulevard Lionel Boulet, Varennes, Quebec J3X 1S2 (Canada)

2009-09-15T23:59:59.000Z

429

A high liquid yield process for retorting various organic materials including oil shale  

DOE Patents (OSTI)

This invention is a continuous retorting process for various high molecular weight organic materials, including oil shale, that yields an enhanced output of liquid product. The organic material, mineral matter, and an acidic catalyst, that appreciably adsorbs alkenes on surface sites at prescribed temperatures, are mixed and introduced into a pyrolyzer. A circulating stream of olefin enriched pyrolysis gas is continuously swept through the organic material and catalyst, whereupon, as the result of pyrolysis, the enhanced liquid product output is provided. Mixed spent organic material, mineral matter, and cool catalyst are continuously withdrawn from the pyrolyzer. Combustion of the spent organic material and mineral matter serves to reheat the catalyst. Olefin depleted pyrolysis gas, from the pyrolyzer, is enriched in olefins and recycled into the pyrolyzer. The reheated acidic catalyst is separated from the mineral matter and again mixed with fresh organic material, to maintain the continuously cyclic process. 2 figs.

Coburn, T.T.

1988-07-26T23:59:59.000Z

430

High liquid yield process for retorting various organic materials including oil shale  

DOE Patents (OSTI)

This invention is a continuous retorting process for various high molecular weight organic materials, including oil shale, that yields an enhanced output of liquid product. The organic material, mineral matter, and an acidic catalyst, that appreciably adsorbs alkenes on surface sites at prescribed temperatures, are mixed and introduced into a pyrolyzer. A circulating stream of olefin enriched pyrolysis gas is continuously swept through the organic material and catalyst, whereupon, as the result of pyrolysis, the enhanced liquid product output is provided. Mixed spent organic material, mineral matter, and cool catalyst are continuously withdrawn from the pyrolyzer. Combustion of the spent organic material and mineral matter serves to reheat the catalyst. Olefin depleted pyrolysis gas, from the pyrolyzer, is enriched in olefins and recycled into the pyrolyzer. The reheated acidic catalyst is separated from the mineral matter and again mixed with fresh organic material, to maintain the continuously cyclic process.

Coburn, Thomas T. (Livermore, CA)

1990-01-01T23:59:59.000Z

431

SEMIEMPIRICAL CORRELATION OF FISSION-YIELD AND KINETIC-ENERGY DISTRIBUTIONS  

SciTech Connect

A statistical approach to a theory of fission was introduced by Fong. In the final development of the fission theory, however, Fong made extensive use of the liquid-drop model, thus departing from the purely statistical approach. T. D. Newton revived and improved the statistical approach sufficiently to show that it might reproduce some but not all of the properties of the fission process. Improved atomic masses and nuclearlevel spacings are used in Newton's formulation of the statistical theory of fission. The integrals of the theory are evaluated with fewer approximations. Agreement is obtained with Newton's conclusion that the statistical approach is by itself inadequate, but it is found that it can form the basis of a semiempirical procedure for correlating fission yields and kinetic-energy distributions. (W.D.M.)

Cameron, A.G.W.

1959-10-31T23:59:59.000Z

432

Grain sorghum stillage recycling: effect on ethanol yield and stillage quality  

SciTech Connect

Stillage obtained from ethanol production of grain sorghum was separated into two fractions: thin stillage and wet solids. A portion of the thin stillage was recycled as cooking water in subsequent fermentation runs using both bench- and full-scale ethanol production plants. When thin stillage replaced 50-75% of the cooking water, large increases occurred in solids content, COD, and EC of the resulting thin stillage. It was found that while the volume of thin stillage requiring treatment or disposal was reduced, there was little reduction in the total pollutant load. Stillage recycling had little effect on the quality of the stillage wet solids fraction. At the high levels of stillage recycle used, ethanol yield was reduced after three to five runs of consecutive recycling.

Egg, R.P.; Sweeten, J.M.; Coble, C.G.

1985-12-01T23:59:59.000Z

433

Squeezing an Old Material Could Yield "Instant-On" Memory | Advanced  

NLE Websites -- All DOE Office Websites (Extended Search)

A Metal That Becomes Transparent under Pressure A Metal That Becomes Transparent under Pressure Under Pressure, Atoms Make Unlikely Alloys Slowing Down Near the Glass Transition New Light on Improving Engine Efficiencies The Crystal Structure of a Meta-stable Intermediate Particle in Virus Assembly Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Squeezing an Old Material Could Yield "Instant-On" Memory APRIL 21, 2009 Bookmark and Share The arrangement between atoms of a film of strontium titanate and the single crystal of silicon on which it was made is shown on the left. When sufficiently thin, the strontium titanate can be strained to match the atom spacing of the underlying silicon and becomes ferroelectric. On the right,

434

Introduction to High Performance Computing  

NLE Websites -- All DOE Office Websites (Extended Search)

Introduction to High Performance Computing Introduction to High Performance Computing June 10, 2013 Photo on 7 30 12 at 7.10 AM Downloads Download File Gerber-HPC-2.pdf...

435

Measuring the absolute deuterium-tritium neutron yield using the magnetic recoil spectrometer at OMEGA and the NIF  

SciTech Connect

A magnetic recoil spectrometer (MRS) has been installed and extensively used on OMEGA and the National Ignition Facility (NIF) for measurements of the absolute neutron spectrum from inertial confinement fusion implosions. From the neutron spectrum measured with the MRS, many critical implosion parameters are determined including the primary DT neutron yield, the ion temperature, and the down-scattered neutron yield. As the MRS detection efficiency is determined from first principles, the absolute DT neutron yield is obtained without cross-calibration to other techniques. The MRS primary DT neutron measurements at OMEGA and the NIF are shown to be in excellent agreement with previously established yield diagnostics on OMEGA, and with the newly commissioned nuclear activation diagnostics on the NIF.

Casey, D. T.; Frenje, J. A.; Gatu Johnson, M.; Seguin, F. H.; Li, C. K.; Petrasso, R. D. [Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139 (United States); Glebov, V. Yu.; Katz, J.; Knauer, J. P.; Meyerhofer, D. D.; Sangster, T. C. [Laboratory for Laser Energetics, UR, Rochester, New York 14623 (United States); Bionta, R. M.; Bleuel, D. L.; Doeppner, T.; Glenzer, S.; Hartouni, E.; Hatchett, S. P.; Le Pape, S.; Ma, T.; MacKinnon, A. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); and others

2012-10-15T23:59:59.000Z

436

Palm Oil: Production, Processing, Uses, and CharacterizationChapter 6 Effect of Pests and Diseases on Oil Palm Yield  

Science Conference Proceedings (OSTI)

Palm Oil: Production, Processing, Uses, and Characterization Chapter 6 Effect of Pests and Diseases on Oil Palm Yield Food Science Health Nutrition Processing eChapters Food Science & Technology Health - Nutrition - Biochemistry Process

437

Impact of nitrogen fertilization and the soil type on the quality and yield of sweet sorghum juice  

E-Print Network (OSTI)

the lowest value was obtained in the sandy soil. The freshbiomass yield recorded in the sandy soil was 39 Mg/ha andlowest value was obtained in the sandy soil (25.2 Mg/ha). In

Holou, Roland A; Stevens, Gene

2009-01-01T23:59:59.000Z

438

Temperature determined by isobaric yield ratio in heavy-ion collisions  

E-Print Network (OSTI)

This work focuses on the study of temperature associated with the final heavy fragments in reactions induced by both the neutron-proton symmetric and the neutron-rich projectiles, and with incident energy ranges from 60$A$ MeV to 1$A$ GeV. Isobaric yield ratio (IYR) is used to determine the temperature of heavy fragments. Cross sections of measured fragment in reactions are analyzed, and a modified statistical abrasion-ablation (SAA) model is used to calculate the yield of fragment in 140$A$ MeV $^{64}$Ni + $^{9}$Be and 1$A$ GeV $^{136}$Xe + $^{208}$Pb reactions. Relatively low $T$ of heavy fragments are obtained in different reactions ($T$ ranges from 1 to 3MeV). $T$ is also found to depend on the neutron-richness of the projectile. The incident energy affects $T$ very little. $\\Delta\\mu/T$ (the ratio of the difference between the chemical potential of neutron and proton to temperature) is found to increase linearly as $N/Z$ of projectile increases. It is found that $T$ of the $^{48}$Ca reaction, for which IYRs are of $A<50$ isobars, is affected greatly by the temperature-corrected $\\Delta B(T)$. But $T$ of reactions using IYRs of heavier fragments are only slightly affected by the temperature-corrected $\\Delta B(T)$. The SAA model analysis gives a consistent overview of the results extracted in this work. $T$ from IYR, which is for secondary fragment, is different from that of the hot emitting source. $T$ and $\\Delta\\mu$ are essentially governed by the sequential decay process.

C. W. Ma; J. Pu; Y. G. Ma; R. Wada; S. S. Wang

2012-12-01T23:59:59.000Z

439

Steam Turbine Performance Engineer's Guide  

Science Conference Proceedings (OSTI)

The Steam Turbine Performance Engineer's Guide is meant to present the steam turbine performance engineer with the expected and important functions and responsibilities necessary to succeed in this position that are not necessarily taught in college. The instructions and recommendations in this guide, when properly executed, will improve the effectiveness of steam turbine performance engineers, positively affecting both the performance and reliability of the steam turbines under their care.

2010-12-23T23:59:59.000Z

440

Performance Metrics for Commercial Buildings  

SciTech Connect

Commercial building owners and operators have requested a standard set of key performance metrics to provide a systematic way to evaluate the performance of their buildings. The performance metrics included in this document provide standard metrics for the energy, water, operations and maintenance, indoor environmental quality, purchasing, waste and recycling and transportation impact of their building. The metrics can be used for comparative performance analysis between existing buildings and industry standards to clarify the impact of sustainably designed and operated buildings.

Fowler, Kimberly M.; Wang, Na; Romero, Rachel L.; Deru, Michael P.

2010-09-30T23:59:59.000Z

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


441

Performance Assessment Scoping - Hanford Example  

Performance Assessment Scoping - Hanford Example Linda Suttora Office of Environmental Compliance DOE-HQ Waste Processing Technical Exchange 2010

442

Changes in long-term no-till corn growth and yield under different rates of stover mulch  

Science Conference Proceedings (OSTI)

Received for publication January 4, 2006. Removal of corn (Zea mays L.) stover for biofuel production may affect crop yields by altering soil properties. A partial stover removal may be feasible, but information on appropriate rates of removal is unavailable. We assessed the short-term impacts of stover management on long-term no-till (NT) continuous corn grown on a Rayne silt loam (fine loamy, mixed, active, mesic Typic Hapludults) at Coshocton, Hoytville clay loam (fine, illitic, mesic Mollic Epiaqualfs) at Hoytville, and Celina silt loam (fine, mixed, active, mesic Aquic Hapludalfs) at South Charleston in Ohio, and predicted corn yield from soil properties using principal component analysis (PCA). The study was conducted in 2005 on the ongoing experiments started in May 2004 under 0 (T0), 25 (T25), 50 (T50), 75 (T75), 100 (T100), and 200 (T200)% of stover corresponding to 0, 1.25, 2.50, 3.75, 5.00, and 10.00 Mg ha-1 of stover, respectively. Stover removal promoted early emergence and rapid seedling growth (P Stover management affected corn yield only at the Coshocton site where average grain and stover yields in the T200, T100, T75, and T50 (10.8 and 10.3 Mg ha-1) were higher than those in the T0 and T25 treatments (8.5 and 6.5 Mg ha-1) (P stover removal at rates as low as 50% (2.5 Mg ha-1) decreased crop yields. Soil properties explained 71% of the variability in grain yield and 33% of the variability in stover yield for the Coshocton site. Seventeen months after the start of the experiment, effects of stover management on corn yield and soil properties were site-specific.

Blanco-Canqui, Dr. Humberto [Ohio State University, The, Columbus; Lal, Dr. Rattan [Ohio State University, The, Columbus; Post, Wilfred M [ORNL; Owens, Lloyd [U.S. Department of Agriculture, Agricultural Research Service

2006-09-01T23:59:59.000Z

443

FY 2008 Annual Performance Report  

Energy.gov (U.S. Department of Energy (DOE))

Focuses on detailed performance information including performance targets associated with the Department’s budget activities. The report discusses individual and summary performance measure results through narrative descriptions with references to supporting documentation, a concise statement on highlevel program challenges and benefits, and the status of all FY 2007 unmet measures.

444

High Performance Computing contributions to  

E-Print Network (OSTI)

High Performance Computing contributions to DoD Mission Success 2002 #12;Approved for public/C nanotube in a field emitter configuration #12;HIGH PERFORMANCE COMPUTING contributions tocontributions ­ SECTION 1 INTRODUCTION 1 Introduction 3 Overview of the High Performance Computing Modernization Program 3

445

Technology Performance Exchange (Fact Sheet)  

SciTech Connect

This fact sheet, 'The Technology Performance Exchange' will be presented at the ET Summit, held at the Pasadena Convention Center on October 15-17, 2012. The Technology Performance Exchange will be a centralized, Web-based portal for finding and sharing energy performance data for commercial building technologies.

Not Available

2012-10-01T23:59:59.000Z

446

Performance Excellence: A Systems Approach and Tools  

Science Conference Proceedings (OSTI)

... Make value. stream flow. ... Data-driven and results-oriented, leading to: tracking systems (eg, control charts, scorecards, rolled throughput yield charts) ...

2013-07-01T23:59:59.000Z

447

Refinery analytical techniques optimize unit performance  

Science Conference Proceedings (OSTI)

Refinery process engineers need to consider benefits of laboratory analytical techniques when evaluating unit performance. Refinery heavy-oil laboratory analytical techniques use both old and new technologies. Knowing how to use available laboratory analytical techniques within their limitations are critical to obtain correct refinery optimization decisions. Better refinery stream distillation and contaminant data ultimately improves the accuracy of various refinery decision-making tools. These laboratory analytical techniques are covered: high-temperature simulated distillation (HTSD); true boiling point (TBP) distillation--ASTM D2892; vacuum distillation--ASTM D5236; continuous-flash vaporizers; wiped-film evaporators; inductively coupled plasma atomic-emission spectroscopy (ICP-AES); Conradson--ASTM D189/Microcarbon residue--ASTM D4530; and asphaltene IP-143, ASTM D3279, ASTM D4124. Analysis of atmospheric crude, vacuum crude and delayed coker units highlight these laboratory techniques to identify potential yield and product quality benefits. Physical distillation or wiped-film evaporation in conjunction with HTSD, ICP-AES, microcarbon residue and asphaltened data will better characterize a feedstock as well as determine the source of contaminants. Economics are refinery specific, therefore, these examples focus on applying laboratory techniques as opposed to discussing specifics of unit improvement. These are discussed qualitatively.

Golden, S.W. [Process Consulting Services Inc., Grapevine, TX (United States); Craft, S. [Chempro, Inc., LaPorte, TX (United States); Villalanti, D.C. [Triton Analytics Corp., Houston, TX (United States)

1995-11-01T23:59:59.000Z

448

Performance Approach Performance Concepts Page 9-1 9. Performance Approach  

E-Print Network (OSTI)

concepts and procedures involved in using the performance approach. 2. Section 9.2 describes analysis ­ Performance Concepts It's easiest to talk about these programs as "compliance software," and we will use, equipment and ventilation. 5. Space conditioning system operation including equipment part load performance

449

Thermal Performance Engineer's Handbook: Introduction to Thermal Performance  

Science Conference Proceedings (OSTI)

The two-volume Thermal Performance Engineer Handbook will assist thermal performance engineers in identifying and investigating the cause of megawatt (MWe) losses as well as in proposing new ways to increase MWe output. Volume 1 contains a thermal performance primer to provide a brief review of thermodynamic principles involved in the stream power plant thermal cycle. The primer also contains brief descriptions of the equipment and systems in the cycle that can be sources of thermal losses. Also in Volum...

1998-04-01T23:59:59.000Z

450

Lighting and Sustained Performance: Modeling Data-Entry Task Performance  

Science Conference Proceedings (OSTI)

This report describes an experiment undertaken to determine the effect of different lighting and print conditions on the sustained performance of a repetitive, self-paced, data-entry task. This research led to the development of an empirical model of task performance, the Data-Entry Task Performance (DETP) model, which can be used to quantify the amount of work done on a data-entry task in a fixed time for changes in illuminance, print size, and luminance contrast.

2000-04-13T23:59:59.000Z

451

Annual Performance Report FY 2004 Annual Performance Plan FY...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About Us...

452

High Performance and Sustainable Buildings Guidance | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

High Performance and Sustainable Buildings Guidance High Performance and Sustainable Buildings Guidance High Performance and Sustainable Buildings Guidance More Documents &...

453

Search for B{sub s}{sup 0{yields}}hh decays at the {Upsilon}(5S) resonance  

SciTech Connect

We have searched for B{sub s}{sup 0{yields}}hh decays, where h stands for a charged or neutral kaon, or a charged pion. These results are based on a 23.6 fb{sup -1} data sample collected with the Belle detector on the {Upsilon}(5S) resonance at the KEKB asymmetric-energy e{sup +}e{sup -} collider, containing 1.25x10{sup 6} B{sub s}{sup (*)}B{sub s}{sup (*)} events. We observe the decay B{sub s}{sup 0{yields}}K{sup +}K{sup -} and measure its branching fraction, B(B{sub s}{sup 0{yields}}K{sup +}K{sup -})=[3.8{sub -0.9}{sup +1.0}(stat){+-}0.5(syst){+-}0.5(f{sub s})]x10{sup -5}. The first error is statistical, the second is systematic, and the third error is due to the uncertainty in the B{sub s}{sup 0} production fraction in e{sup +}e{sup -{yields}}bb events. No significant signals are seen in other decay modes, and we set upper limits at the 90% confidence level: B(B{sub s}{sup 0{yields}}K{sup -{pi}+})<1.2x10{sup -5}, B(B{sub s}{sup 0{yields}{pi}+{pi}-})<2.6x10{sup -5}, and B(B{sub s}{sup 0{yields}}K{sup 0}K{sup 0})<6.6x10{sup -5}.

Peng, C.-C.; Chang, P.; Chao, Y.; Chen, K.-F.; Chen, P.; Chiang, C.-C.; Hou, W.-S.; Shiu, J.-G. [Department of Physics, National Taiwan University, Taipei (China); Adachi, I.; Haba, J.; Itoh, R.; Iwasaki, Y.; Krokovny, P.; Nakao, M.; Nishida, S.; Sakai, Y.; Sumisawa, K.; Tanaka, M.; Trabelsi, K.; Uehara, S. [High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)

2010-10-01T23:59:59.000Z

454

Effective System Performance (ESP) Benchmark  

NLE Websites -- All DOE Office Websites (Extended Search)

Effective System Effective System Performance (ESP) Benchmark Effective System Performance (ESP) Benchmark It is now generally recognized in the high performance computing community that peak performance does not adequately predict the usefulness of a system for a given set of applications. One of the first benchmarks designed to measure system performance in a real-world operational environment was NERSC's Effective System Performance (ESP) test. NERSC introduced ESP in 1999 with the hope that this test would be of use to system managers and would help to spur the community (both researchers and vendors) to improve system efficiency. The discussion below uses examples from the Cray T3E system that NERSC was operating in 1999. Improved MPP System Efficiency Equals Million-Dollar Savings

455

DOE Performance Report 2006.qxd  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE/IG-APP-008 DOE/IG-APP-008 U.S. DEPARTMENT OF ENERGY OFFICE OF INSPECTOR GENERAL DOE/IG-APP-008 Annual Performance Report FY 2005 Annual Performance Plan FY 2006 ANNUAL PERFORMANCE REPORT FY 2005 ANNUAL PERFORMANCE PLAN FY 2006 U.S. DEPARTMENT OF ENERGY OFFICE OF INSPECTOR GENERAL THIS PAGE INTENTIONALLY LEFT BLANK Message from the Inspector General I am pleased to present the Office of Inspector General's combined Fiscal Year 2005 Annual Performance Report and Fiscal Year 2006 Annual Performance Plan. Our office continues to work vigorously in support of the Department and its mission. During FY 2005, we issued 99 audit and inspection reports containing recommendations for over $619 million in savings; referred 31 criminal cases for prosecution; obtained 14 convictions; recovered over $27.4 million in fines, restitutions and settlements; and,

456

BG/Q Performance Project: porting -Performance Tools  

E-Print Network (OSTI)

- Libraries ALCF Performance Engineering #12;BG/Q Performance Tools Early efforts were ini8ated with Spiral Gen 7 #12;ALCF Supported BG/Q Libraries on VEAS Library Name Source Provides Graph ParAAoning 4.0.2 8 Located in /soft/libraries/alcf Maintained in

Kemner, Ken

457

Process for improving soluble coal yield in a coal deashing process  

DOE Patents (OSTI)

Coal liquefaction products are contacted with a deashing solvent and introduced into a first separation zone. The first separation zone is maintained at an elevated temperature and pressure, determined to maximize the recovery of soluble coal products, to cause said coal liquefaction products to separate into a first light phase and a first heavy phase. Under these conditions the heavy phase while still fluid-like in character is substantially non-flowable. Flowability is returned to the fluid-like heavy phase by the introduction of an additional quantity of deashing solvent into the first separation zone at a location below the interface between the first light and heavy phases or into the heavy phase withdrawal conduit during withdrawal of the first heavy phase and prior to any substantial pressure reduction. The first heavy phase then is withdrawn from the first separation zone for additional downstream processing without plugging either the withdrawal conduit or the downstream apparatus. The first light phase comprising the soluble coal products is withdrawn and recovered in an increased yield to provide a more economical coal deashing process.

Rhodes, Donald E. (Oklahoma City, OK)

1980-01-01T23:59:59.000Z

458

Documentation: The automated ORAD (Oil Refinery and Distribution Model) to RYMs (Refinery Yield Model) linked system  

SciTech Connect

The Refinery Evaluation Modeling System (REMS) is an analytic tool used by the Energy Information Administration (EIA) to provide insight into the domestic operations of United States refineries. REMS can be used to determine the potential impacts of changes in demands for petroleum products, crude and feedstock qualities, refinery processing capacities, foreign and domestic crude availabilities, transportation modes and costs, and government regulations. REMS is a set of linear programming models that solve for a partial equilibrium in the US refinery market by equating supply and demand while maximizing profits for US refiners. REMS consists of two models: the Refinery Yield Model (RYM), and the Oil Refinery and Distribution Model (ORAD). RYMs consists of nine separate regional models that represent the contiguous US refinery system. These nine regions are aggregates of the 13 Bureau of Mines (BOM) refinery districts. ORAD integrates the results from the individual RYMs into a transportation network which represents the US refinery market. ORAD uses the extreme point refinery representation from RYMs to solve for the optimal product prices in ORAD.

Sanders, R.P.; Kydes, A.S.

1987-01-01T23:59:59.000Z

459

EXPECTED LARGE SYNOPTIC SURVEY TELESCOPE (LSST) YIELD OF ECLIPSING BINARY STARS  

Science Conference Proceedings (OSTI)

In this paper, we estimate the Large Synoptic Survey Telescope (LSST) yield of eclipsing binary stars, which will survey {approx}20,000 deg{sup 2} of the southern sky during a period of 10 years in six photometric passbands to r {approx} 24.5. We generate a set of 10,000 eclipsing binary light curves sampled to the LSST time cadence across the whole sky, with added noise as a function of apparent magnitude. This set is passed to the analysis-of-variance period finder to assess the recoverability rate for the periods, and the successfully phased light curves are passed to the artificial-intelligence-based pipeline ebai to assess the recoverability rate in terms of the eclipsing binaries' physical and geometric parameters. We find that, out of {approx}24 million eclipsing binaries observed by LSST with a signal-to-noise ratio >10 in mission lifetime, {approx}28% or 6.7 million can be fully characterized by the pipeline. Of those, {approx}25% or 1.7 million will be double-lined binaries, a true treasure trove for stellar astrophysics.

Prsa, Andrej [Department of Astronomy and Astrophysics, Villanova University, 800 East Lancaster Avenue, Villanova, PA 19085 (United States); Pepper, Joshua; Stassun, Keivan G., E-mail: andrej.prsa@villanova.edu [Physics and Astronomy Department, Vanderbilt University, 2201 West End Avenue, Nashville, TN 37235 (United States)

2011-08-15T23:59:59.000Z

460

Trends in Yield and Azimuthal Shape Modification in Dihadron Correlations in Relativistic Heavy Ion Collisions  

E-Print Network (OSTI)

Fast parton probes produced by hard scattering and embedded within collisions of large nuclei have shown that partons suffer large energy loss and that the produced medium may respond collectively to the lost energy. We present measurements of neutral pion trigger particles at transverse momenta p^t_T = 4-12 GeV/c and associated charged hadrons (p^a_T = 0.5-7 GeV/c) as a function of relative azimuthal angle Delta Phi at midrapidity in Au+Au and p+p collisions at sqrt(s_NN) = 200 GeV. These data lead to two major observations. First, the relative angular distribution of low momentum hadrons, whose shape modification has been interpreted as a medium response to parton energy loss, is found to be modified only for p^t_T < 7 GeV/c. At higher p^t_T, the data are consistent with unmodified or very weakly modified shapes, even for the lowest measured p^a_T. This observation presents a quantitative challenge to medium response scenarios. Second, the associated yield of hadrons opposite to the trigger particle in Au+Au relative to that in p+p (I_AA) is found to be suppressed at large momentum (IAA ~ 0.35-0.5), but less than the single particle nuclear modification factor (R_AA ~0.2).

A. Adare; S. Afanasiev; C. Aidala; N. N. Ajitanand; Y. Akiba; H. Al-Bataineh; J. Alexander; T. Alho; K. Aoki; L. Aphecetche; Y. Aramaki; J. Asai; E. T. Atomssa; R. Averbeck; T. C. Awes; B. Azmoun; V. Babintsev; M. Bai; G. Baksay; L. Baksay; A. Baldisseri; K. N. Barish; P. D. Barnes; B. Bassalleck; A. T. Basye; S. Bathe; S. Batsouli; V. Baublis; C. Baumann; A. Bazilevsky; S. Belikov; R. Belmont; R. Bennett; A. Berdnikov; Y. Berdnikov; A. A. Bickley; J. G. Boissevain; J. S. Bok; H. Borel; K. Boyle; M. L. Brooks; H. Buesching; V. Bumazhnov; G. Bunce; S. Butsyk; C. M. Camacho; S. Campbell; B. S. Chang; W. C. Chang; J. -L. Charvet; C. -H. Chen; S. Chernichenko; C. Y. Chi; M. Chiu; I. J. Choi; R. K. Choudhury; P. Christiansen; T. Chujo; P. Chung; A. Churyn; O. Chvala; V. Cianciolo; Z. Citron; B. A. Cole; M. Connors; P. Constantin; M. Csanád; T. Csörg?; T. Dahms; S. Dairaku; I. Danchev; K. Das; A. Datta; G. David; A. Denisov; D. d'Enterria; A. Deshpande; E. J. Desmond; O. Dietzsch; A. Dion; M. Donadelli; O. Drapier; A. Drees; K. A. Drees; A. K. Dubey; M. Durham; A. Durum; D. Dutta; V. Dzhordzhadze; S. Edwards; Y. V. Efremenko; F. Ellinghaus; T. Engelmore; A. Enokizono; H. En'yo; S. Esumi; K. O. Eyser; B. Fadem; D. E. Fields; M. Finger; \\, Jr.; M. Finger; F. Fleuret; S. L. Fokin; Z. Fraenkel; J. E. Frantz; A. Franz; A. D. Frawley; K. Fujiwara; Y. Fukao; T. Fusayasu; I. Garishvili; A. Glenn; H. Gong; M. Gonin; J. Gosset; Y. Goto; R. Granier de Cassagnac; N. Grau; S. V. Greene; M. Grosse Perdekamp; T. Gunji; H. -Å. Gustafsson; A. Hadj Henni; J. S. Haggerty; I. Hahn; H. Hamagaki; J. Hamblen; J. Hanks; R. Han; E. P. Hartouni; K. Haruna; E. Haslum; R. Hayano; M. Heffner; S. Hegyi; T. K. Hemmick; T. Hester; X. He; J. C. Hill; M. Hohlmann; W. Holzmann; K. Homma; B. Hong; T. Horaguchi; D. Hornback; S. Huang; T. Ichihara; R. Ichimiya; J. Ide; Y. Ikeda; K. Imai; J. Imrek; M. Inaba; D. Isenhower; M. Ishihara; T. Isobe; M. Issah; A. Isupov; D. Ivanischev; B. V. Jacak; J. Jia; J. Jin; B. M. Johnson; K. S. Joo; D. Jouan; D. S. Jumper; F. Kajihara; S. Kametani; N. Kamihara; J. Kamin; J. H. Kang; J. Kapustinsky; D. Kawall; M. Kawashima; A. V. Kazantsev; T. Kempel; A. Khanzadeev; K. M. Kijima; J. Kikuchi; B. I. Kim; D. H. Kim; D. J. Kim; E. -J. Kim; E. Kim; S. H. Kim; Y. J. Kim; E. Kinney; K. Kiriluk; A. Kiss; E. Kistenev; J. Klay; C. Klein-Boesing; L. Kochenda; B. Komkov; M. Konno; J. Koster; D. Kotchetkov; A. Kozlov; A. Král; A. Kravitz; G. J. Kunde; K. Kurita; M. Kurosawa; M. J. Kweon; Y. Kwon; G. S. Kyle; R. Lacey; Y. S. Lai; J. G. Lajoie; D. Layton; A. Lebedev; D. M. Lee; J. Lee; K. B. Lee; K. Lee; K. S. Lee; T. Lee; M. J. Leitch; M. A. L. Leite; E. Leitner; B. Lenzi; P. Liebing; L. A. Linden Levy; T. Liška; A. Litvinenko; H. Liu; M. X. Liu; X. Li; B. Love; R. Luechtenborg; D. Lynch; C. F. Maguire; Y. I. Makdisi; A. Malakhov; M. D. Malik; V. I. Manko; E. Mannel; Y. Mao; L. Mašek; H. Masui; F. Matathias; M. McCumber; P. L. McGaughey; N. Means; B. Meredith; Y. Miake; A. Mignerey; P. Mikeš; K. Miki; A. Milov; M. Mishra; J. T. Mitchell; A. K. Mohanty; Y. Morino; A. Morreale; D. P. Morrison; T. V. Moukhanova; D. Mukhopadhyay; J. Murata; S. Nagamiya; J. L. Nagle; M. Naglis; M. I. Nagy; I. Nakagawa; Y. Nakamiya; T. Nakamura; K. Nakano; J. Newby; M. Nguyen; T. Niita; R. Nouicer; A. S. Nyanin; E. O'Brien; S. X. Oda; C. A. Ogilvie; H. Okada; K. Okada; M. Oka; Y. Onuki; A. Oskarsson; M. Ouchida; K. Ozawa; R. Pak; A. P. T. Palounek; V. Pantuev; V. Papavassiliou; I. Park; J. Park; S. K. Park; W. J. Park; S. F. Pate; H. Pei; J. -C. Peng; H. Pereira; V. Peresedov; D. Yu. Peressounko; C. Pinkenburg; R. P. Pisani; M. Proissl; M. L. Purschke; A. K. Purwar; H. Qu; J. Rak; A. Rakotozafindrabe; I. Ravinovich; K. F. Read; S. Rembeczki; K. Reygers; V. Riabov; Y. Riabov; E. Richardson; D. Roach; G. Roche; S. D. Rolnick; M. Rosati; C. A. Rosen; S. S. E. Rosendahl; P. Rosnet; P. Rukoyatkin; P. Ruži?ka; V. L. Rykov; B. Sahlmueller; N. Saito; T. Sakaguchi; S. Sakai; K. Sakashita; V. Samsonov; S. Sano; T. Sato; S. Sawada; K. Sedgwick; J. Seele; R. Seidl; A. Yu. Semenov; V. Semenov; R. Seto; D. Sharma; I. Shein; T. -A. Shibata; K. Shigaki; M. Shimomura; K. Shoji; P. Shukla; A. Sickles; C. L. Silva; D. Silvermyr; C. Silvestre; K. S. Sim; B. K. Singh; C. P. Singh; V. Singh; M. Slune?ka; A. Soldatov; R. A. Soltz; W. E. Sondheim; S. P. Sorensen; I. V. Sourikova; N. A. Sparks; F. Staley; P. W. Stankus; E. Stenlund; M. Stepanov; A. Ster; S. P. Stoll; T. Sugitate; C. Suire; A. Sukhanov; J. Sziklai; E. M. Takagui; A. Taketani; R. Tanabe; Y. Tanaka; K. Tanida; M. J. Tannenbaum; S. Tarafdar; A. Taranenko; P. Tarján; H. Themann; T. L. Thomas; M. Togawa; A. Toia; L. Tomášek; Y. Tomita; H. Torii; R. S. Towell; V-N. Tram; I. Tserruya; Y. Tsuchimoto; C. Vale; H. Valle; H. W. van Hecke; E. Vazquez-Zambrano; A. Veicht; J. Velkovska; R. Vertesi

2010-02-04T23:59:59.000Z

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


461

Effect of vesicular-arbuscular mycorrhiza (VAM) on yield of sorghum cultivars  

E-Print Network (OSTI)

The fungi of vesicular-arbuscular mycorrhiza (VAM) as a benefit microorganism are used in various purposes, such as mining, agriculture and environmental science. In agriculture, utilization of VAM as benefit manner and biological efficiency for plant growth and nutrition is an important symbiotic with crops. The effects of different mycorrhizal fungi symbiosis with sorghum genotypes were studied in growing season 2006-2007 in Agriculture and Research Institute of Dryland Area, Zabol, Iran. This experiment was based on factorial completely randomize design with two factors in four replications in field condition. The first factor was in three levels including KGS 25, KGS 29 and native. The second factor was mycorrhiza in three levels including without mycorrhiza and various species of Glomus etanicatum and G. mossae. The results showed that there are significant differences between cultivars of sorghum and using mycorrhiza on plant height, number of seed in spike, biomass, root colonization. Also the results indicated that in order augmentation of plant growth and crop yield it is necessary to choose the most effective fungus species. G. mosseae species were best mycorrhiza strains among studied species. VAM colonization improved most characteristics of sorghum in semiarid lands. Key words: Mycorrhiza, G. mossae, G. etanicatum, sorghum.

Meri-rastilantie B; A. Mehraban; S. Vazan; M. R. Naroui Rad; A. R. Ardakany

2009-01-01T23:59:59.000Z

462

Associative detachment of H{sup -} + H {yields} H{sub 2} + e{sup -}  

SciTech Connect

Using a merged-beams apparatus, we have measured the associative detachment (AD) reaction of H{sup -}+H{yields}H{sub 2}+e{sup -} for relative collision energies up to E{sub r}{<=}4.83 eV. These data extend above the 1-eV limit of our earlier results. We have also updated our previous theoretical work to account for AD via the repulsive {sup 2}{Sigma}{sub g}{sup +} H{sub 2}{sup -} potential energy surface and for the effects at E{sub r}{>=}0.76 eV on the experimental results due to the formation of long-lived H{sub 2} resonances lying above the H+H separated atoms limit. Merging both experimental data sets, our results are in good agreement with our new theoretical calculations and confirm the prediction that this reaction essentially turns off for E{sub r}(greater-or-similar sign)2 eV. Similar behavior has been predicted for the formation of protonium from collisions of antiprotons and hydrogen atoms.

Miller, K. A.; Bruhns, H.; Kreckel, H.; Savin, D. W. [Columbia Astrophysics Laboratory, Columbia University, New York, New York 10027 (United States); Eliasek, J.; Cizek, M. [Institute of Theoretical Physics, Faculty of Mathematics and Physics, Charles University Prague, CZ-180 00 Praha 8 (Czech Republic); Urbain, X. [Institute of Condensed Matter and Nanosciences, Universite Catholique de Louvain, B-1348 Louvain-la-Neuve (Belgium)

2011-11-15T23:59:59.000Z

463

Extreme Environment Testing and Performance  

Science Conference Proceedings (OSTI)

Oct 10, 2012 ... We will present examples from recent tests performed on carbon-, silicon- ... it is relatively easy to capture the CO2 for reuse or sequestration.

464

Sustained System Performance (SSP) Benchmark  

NLE Websites -- All DOE Office Websites (Extended Search)

John M. Shalf, and Erich Strohmaier Background The NERSC Approach to Procurement Benchmarks The NERSC-5 SSP The NERSC-6 SSP The Effective System Performance (ESP) Metric...

465

Biodiesel Performance, Costs, and Use  

U.S. Energy Information Administration (EIA)

Biodiesel Performance, Costs, and Use. by Anthony Radich. Introduction. The idea of using vegetable oil for fuel has been around as long as the diesel engine.

466

Solar Two Performance Evaluation Methodology  

Science Conference Proceedings (OSTI)

Solar Two is a 10-MWe prototype central-receiver plant east of Barstow, California. Solar Two, which is sponsored by a consortium of utilities and industry in partnership with the U.S. Department of Energy, began regular electricity production in February 1997. The objective of Solar Two's performance evaluation activity is to understand the plant's performance and to use the evaluation information for the following purposes: optimize plant performance, extrapolate Solar Two's performance to general performance of molten-salt central-receiver technology, and recommend revisions to predictive models and engineering design methods for Solar Two and future-generation molten-salt central-receiver technology. The primary aspect of the performance evaluation is the lost-electricity analysis. This analysis compares the actual generation with the generation predicted by the Solar Two model. (SOLERGY, a computer program designed by Sandia National Laboratories to simulate the operation and power output of a solar central-receiver power plant is the code used to model Solar Two.) The difference between the predicted and the actual generation (i.e., the lost electricity) is broken down into the different efficiency and availability categories responsible for the loss. Having the losses broken down by system and in terms of electricity is useful for understanding and improving the plant's performance; it provides a tool for determining the best operating procedures for plant performance and the allocation of operation and maintenance resources for the best performance payback.

Mary Jane Hale

1999-11-01T23:59:59.000Z

467

Thrusts in High Performance Computing  

NLE Websites -- All DOE Office Websites (Extended Search)

in HPC 1 Thrusts in High Performance Computing Science at Scale Petaflops to Exaflops Science through Volume Thousands to Millions of Simulations Science in Data Petabytes to...

468

Improve energy performance | ENERGY STAR  

NLE Websites -- All DOE Office Websites (Extended Search)

track, and benchmark Improve energy performance ENERGY STAR industrial partnership Energy guides Energy efficiency and air regulation Plant energy auditing Industrial...

469

Energy Basics: Photovoltaic Cell Performance  

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

Performance Photovoltaic (PV), or solar cells use the energy in sunlight to produce electricity. However, the amount of electricity produced depends on the quality of the light...

470

Performance of Home Smoke Alarms  

Science Conference Proceedings (OSTI)

... 72 Figure 86. Heating ignition source with cooking oil . ... Estimated particle size from cooking oil fire scenario . . ... Performance of Home Smoke Alarms ...

2012-10-15T23:59:59.000Z

471

Performance of bolted wood connections using supplemental confining devices  

E-Print Network (OSTI)

In the aftermath of the 1994 Northridge Earthquake, extensive field investigations revealed damage in wood frame construction in the form of splitting the 2x4 or 2x6 dimension lumber sill plates along the line of anchor bolts which typically connect shear walls to the masonry or concrete foundation. This paper presents an experimental investigation on the performance of bolted wood connections at the yield and ultimate limit states during monotonic and incremental quasi-static reversed cyclic loading and suggests possible retrofit strategies for their improved seismic performance. Proposed retrofit strategies are based on providing confinement to the bolted wood member using metal reinforcing ;traps and reinforcing clamps to increase the deformation capability and energy dissipation capacity of the connection, while maintaining substantial levels of connection strength. Connection types included in the investigation are: (1) double shear wood-to-wood connections; and (2) single shear simulated sill plate-to-concrete foundation connections.

Stromatt, Rebecca Faye

1996-01-01T23:59:59.000Z