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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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1

Minimize pump downtime  

SciTech Connect (OSTI)

In refineries and petrochemical plants, centrifugal pumps usually lead the list of equipment that is most susceptible to failure. Using guidelines, maintenance mechanics can improve troubleshooting methods when investigating pump bedplates, underlying concrete foundations and grouting problems. Too often, mechanics may improperly diagnose a misalignment--caused by grouting problems--as an unbalance or a bearing-wearing problem when troubleshooting pump failure. Result: bearing, shaft and seal failures occur from a flawed maintenance procedure. Identifying mounting-surface problems can improve pump performance and decrease unit downtime.

Myers, R.D. [ITW Escoweld Systems, Kingwood, TX (United States)

1995-06-01T23:59:59.000Z

2

E-Print Network 3.0 - avoiding unscheduled transcription Sample...  

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

Management (PHM) Summary: because, while expensive unscheduled maintenance actions are avoided, the life cycle cost per unit is high... that assumed unscheduled maintenance and...

3

IEEE TRANSACTIONS ON NETWORK AND SERVICE MANAGEMENT, ACCEPTED FOR PUBLICATION 1 Achieving Sub-Second Downtimes in  

E-Print Network [OSTI]

routing approaches in terms of service downtime, as a function of datacenter-datacenter and client-datacenter networking. I. INTRODUCTION AS a matter of fact, network virtualization has revolu- tionized datacenter as well as with its users, which keep communicating while moving across datacenters [3]. Submitted on July

Secci, Stefano

4

A case model for predictive maintenance  

E-Print Network [OSTI]

This project is to respond to a need by Varian Semiconductor Equipment Associates, Inc. (VSEA) to help predict failure of ion implanters. Predictive maintenance would help to reduce the unscheduled downtime of ion implanters, ...

Li, Jiawei, M. Eng. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

5

High flux isotope reactor: Quarterly report October through December 1986  

SciTech Connect (OSTI)

Two routine cycles of operation of the HFIR reactor were completed during the quarter. The shutdowns to end these cycles were both scheduled. The end-of-cycle 287 shutdown was extended indefinitely to investigate the embrittlement of reactor vessel materials due to radiation damage. The reactor remains down at the end of the quarter. Following the scheduled end-of-cycle 287 shutdown period, subsequent shutdown time was designated as unscheduled. The two scheduled shutdowns, fourth quarter downtime resulting from a third quarter scheduled shutdown, and the extended unscheduled shutdown account for the low 44.2% on-stream time for the quarter. The scheduled control plate replacement and vessel internals inspection was completed at the end-of-cycle 287. The inspection revealed a blister on control cylinder 9. This flaw was attributed to a manufacturing defect.

Corbett, B.L.; Farrar, M.B.

1987-04-01T23:59:59.000Z

6

2014 ALCC Proposals Due  

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

ALCC Proposals Due February 3, 2014 2014 DOE ALCC Proposals Due February 3 December 23, 2013 by Francesca Verdier (0 Comments) DOE's 2014 call for its ASCR Leadership Computing...

7

Building Damage, Death and Downtime Risk Attenuation in Earthquakes  

E-Print Network [OSTI]

value over a specified amount of time, can be obtained. This was a great development in the field of probabilistic seismic hazard analysis. Kennedy et al. (1980) conducted research to study the safety of the Oyster Creek nuclear power plant... 2D structural model developed in SAP 2000; and (c) plan of ?Redbook Building? ....... 16 Figure 4 ?Scenario-based? 3d loss model: (a) seismic hazard intensity-attenuation model; (b) structural analysis; (c) damage analysis; and (d) loss...

Huang, Yinghui

2012-07-16T23:59:59.000Z

8

Run2015-1DowntimeDetails.xls  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0 Resource ProgramEnergyMaterials:Bill WilcoxSpear Down

9

DOI 10.1007/s00170-004-2131-6 OR I GI NAL AR T I C LE  

E-Print Network [OSTI]

· OSA-CBM · Preventive maintenance · Reliability-centered maintenance 1 Maintenance strategies be limited to the observation of current system states, with maintenance and repair actions prompted the philosophies and techniques that focus on improving reliability and reducing unscheduled downtime by monitoring

Huang, Samuel H.

10

Track NERSC Scheduled and Unscheduled Outages in Google Calendar  

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

calendar form. You can subscribe to this calendar by following the link, http:goo.glA4n3k, and then clicking the add button on the bottom right. If you find any issues with...

11

Track NERSC Scheduled and Unscheduled Outages in Google Calendar  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2Topo II: An EnzymePersonal ComputersoMarchTracey

12

Announcement due to MSVE Department  

E-Print Network [OSTI]

Announcement due to MSVE Department 2 weeks prior to defense Student revises Thesis GPD revises Thesis and returns to student Student revises Thesis Professional editor reviews Thesis original signatures on five copies Student revises Thesis Student takes final five copies to Registrar

13

2014 NERSC allocation requests due September 22  

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

NERSC allocation requests due September 22 2014 NERSC allocation requests due September 22 August 13, 2013 by Francesca Verdier (0 Comments) NERSC's allocation submission system is...

14

Rapid Loss Modeling of Death and Downtime Caused By Earthquake Induced Damage to Structures  

E-Print Network [OSTI]

losses produced by large, damaging earthquakes. This was when California Office of Emergency Services started thinking of some rational basis for state rescue and recovery operations for future. Kennedy et al. (1980) studied probabilistic seismic... (1999) developed a relationship between seismic demands on structures in terms of ground motion parameters which is part of the second step of the performance based design model. They worked on probabilistic seismic demand analysis of nonlinear...

Ghorawat, Sandeep

2012-07-16T23:59:59.000Z

15

Achieving Sub-Second Downtimes in Internet-wide Virtual Machine Live Migrations in LISP Networks  

E-Print Network [OSTI]

as a function of datacenter-datacenter and client-datacenter distances. I. INTRODUCTION Virtualization has been revolutionizing datacenter network- ing since a few years. Once solely based on physical server and mainframe interconnections, Cloud datacenters evolve with an increasing deployment of virtualization servers hosting, sending

Secci, Stefano

16

23: Poultry Judging registration due to state office 29: Doughnut Sale Forms due for Council Fundraiser  

E-Print Network [OSTI]

May 23: Poultry Judging registration due to state office 29: Doughnut Sale Forms due for Council 3: Just Kiddin' 4-H Club annual banquet 6: State Poultry Judging Contest, Registration at 9:15am

Jawitz, James W.

17

Violent Wave Motion due to Impact Violent Wave Motion due to Impact  

E-Print Network [OSTI]

Violent Wave Motion due to Impact Violent Wave Motion due to Impact Mark J. Cooker School of Mathematics, University of East Anglia, Norwich, England. m.cooker@uea.ac.uk Theory of Water Waves, Cambridge Motion due to Impact 2. Pressure-Impulse Theory 214 M.J. COOKER AND D.H. PEREGRINE Y; O: .-- I mpact zone

18

Quantifying precipitation suppression due to air Pollution  

E-Print Network [OSTI]

Quantifying precipitation suppression due to air Pollution First author: Amir Givati The Hebrew January 2004 #12;ABSTRACT: Urban and industrial air pollution has been shown qualitatively to suppress of the ratio of hill/coast precipitation during the 20th century in polluted areas in line with the increasing

Li, Zhanqing

19

Is Hubble's Expansion due to Dark Energy  

E-Print Network [OSTI]

{\\it The universe is expanding} is known (through Galaxy observations) since 1929 through Hubble's discovery ($V = H D$). Recently in 1999, it is found (through Supernovae observations) that the universe is not simply expanding but is accelerating too. We, however, hardly know only $4\\%$ of the universe. The Wilkinson Microwave Anisotropy Probe (WMAP) satellite observational data suggest $73\\%$ content of the universe in the form of dark-energy, $23\\%$ in the form of non-baryonic dark-matter and the rest $4\\%$ in the form of the usual baryonic matter. The acceleration of the universe is ascribed to this dark-energy with bizarre properties (repulsive-gravity). The question is that whether Hubble's expansion is just due to the shock of big-bang & inflation or it is due to the repulsive-gravity of dark-energy? Now, it is believed to be due to dark-energy, say, by re-introducing the once-discarded cosmological-constant $\\Lambda$. In the present paper, it is shown that `the formula for acceleration due to dark-energy' is (almost) exactly of same-form as `the acceleration formula from the Hubble's law'. Hence, it is concluded that: yes, `indeed it is the dark-energy responsible for the Hubble's expansion too, in-addition to the current on-going acceleration of the universe'.

R. C. Gupta; Anirudh Pradhan

2010-10-19T23:59:59.000Z

20

Preventive maintenance system for the photomultiplier detector blocks of PET scanners  

DOE Patents [OSTI]

A system including a method and apparatus for preventive maintenance of PET scanner photomultiplier detector blocks is disclosed. The qualitative comparisons used in the method of the present invention to provide an indication in the form of a display or printout advising the user that the photomultiplier block is stable, intermittently unstable, or drifting unstable, and also advising of the expected date of failure of a photomultiplier block in the PET scanner. The system alerts the user to replace the defective photomultiplier block prior to catastrophic failure in a scheduled preventative maintenance program, thus eliminating expensive and unscheduled downtime of the PET scanner due to photomultiplier failure. The apparatus for carrying out the method of the present invention preferably resides in the host computer controlling a PET scanner. It includes a memory adapted for storing a record of a number of iterative adjustments that are necessary to calibrate the gain of a photomultiplier detector block i at a time t[sub 0], a time t[sub 1] and a time T, where T>t[sub 1]>t[sub 0], which is designated as Histo(i,j(t)). The apparatus also includes a processor configured by a software program or a combination of programmed RAM and ROM devices to perform a number of calculations and operations on these values, and also includes a counter for analyzing each photomultiplier detector block i=1 through I of a PET scanner. 40 figures.

Levy, A.V.; Warner, D.

1995-01-24T23:59:59.000Z

Note: This page contains sample records for the topic "unscheduled downtime due" 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

Preventive maintenance system for the photomultiplier detector blocks of pet scanners  

DOE Patents [OSTI]

A system including a method and apparatus for preventive maintenance of PET scanner photomultiplier detector blocks is disclosed. The quantitive comparisons used in the method of the present invention to provide an indication in the form of a display or printout advising the user that the photomultiplier block is stable, intermittently unstable, or drifting unstable, and also advising of the expected date of failure of a photomultiplier block in the PET scanner. The system alerts the user to replace the defective photomultiplier block prior to catastrophic failure in a scheduled preventative maintenance program, thus eliminating expensive and unscheduled downtime of the PET scanner due to photomultiplier failure. The apparatus for carrying out the method of the present invention preferably resides in the host computer controlling a PET scanner. It includes a memory adapted for storing a record of a number of iterative adjustments that are necessary to calibrate the gain of a photomultiplier detector block i at a time t.sub.0, a time t.sub.1 and a time T, where T>t.sub.1 >t.sub.0, which is designated as Histo(i,j(t)). The apparatus also includes a processor configured by a software program or a combination of programmed RAM and ROM devices to perform a number of calculations and operations on these values, and also includes a counter for analyzing each photomultiplier detector block i=1 through I of a PET scanner.

Levy, Alejandro V. (Center Moriches, NY); Warner, Donald (Shirley, NY)

1995-01-24T23:59:59.000Z

22

Final Project Due: May 18, 2010  

E-Print Network [OSTI]

1 Geos 206 Final Project Due: May 18, 2010 Save the trees, and the music stands: An Energy: Monthly totals Total Electricity in kWh Average kWh per day Cost $.11/kWh Emissions .41 kg/kWh (unit in kg electricity bill, cost and emissions of the Bernhard/Chapin complex. 4 Figure 3: This graph provides a monthly

Aalberts, Daniel P.

23

Extreme events due to localisation of energy  

E-Print Network [OSTI]

We study a one-dimensional chain of harmonically coupled units in an asymmetric anharmonic soft potential. Due to nonlinear localisation of energy, this system exhibits extreme events in the sense that individual elements of the chain show very large excitations. A detailed statistical analysis of extremes in this system reveals some unexpected properties, e.g., a pronounced pattern in the inter event interval statistics. We relate these statistical properties to underlying system dynamics, and notice that often when extreme events occur the system dynamics adopts (at least locally) an oscillatory behaviour, resulting in, for example, a quick succession of such events. The model therefore might serve as a paradigmatic model for the study of the interplay of nonlinearity, energy transport, and extreme events.

Colm Mulhern; Stephan Bialonski; Holger Kantz

2015-01-09T23:59:59.000Z

24

Life Extinction Due To Neutron Star Mergers  

E-Print Network [OSTI]

Cosmic ray bursts (CRBs) from mergers or accretion induced collapse of neutron stars that hit an Earth-like planet closer than $\\sim 1 kpc$ from the explosion produce lethal fluxes of atmospheric muons at ground level, underground and underwater. These CRBs also destroy the ozone layer and radioactivate the environment. The mean rate of such life devastating CRBs is one in 100 million years (Myr), consistent with the observed 5 ``great'' extinctions in the past 600 Myr. Unlike the previously suggested extraterrestrial extinction mechanisms the CRBs explain massive life extinction on the ground, underground and underwater and the higher survival levels of radiation resistant species and of terrain sheltered species. More distant mergers can cause smaller extinctions. Biological mutations caused by ionizing radiation produced by the CRB may explain a fast appearance of new species after mass extinctions. The CRB extinction predicts detectable enrichment of rock layers which formed during the extinction periods with cosmogenically produced radioactive nucleides such as $^{129}$I, $^{146}$Sm, $^{205}$Pb with and $^{244}$Pu. Tracks of high energy particles in rock layers on Earth and on the moon may also contain records of intense CRBs. An early warning of future extinctions due to neutron star mergers can be obtained by identifying, mapping and timing all the nearby binary neutron stars systems. A final warning of an approaching CRB from a nearby neutron stars merger will be provided by a gamma ray burst a few days before the arrival of the CRB.

Arnon Dar; Ari Laor; Nir J. Shaviv

1996-11-24T23:59:59.000Z

25

Renewable Energy Loan Applications Due Today! | Department of...  

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

Renewable Energy Loan Applications Due Today Renewable Energy Loan Applications Due Today October 5, 2010 - 12:15pm Addthis Ebony Meeks Former Assistant Press Secretary, Office...

26

SC11 Education Program Applications due July 31  

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

SC11 Education Program Applications due July 31 SC11 Education Program Applications due July 31 June 9, 2011 by Francesca Verdier (0 Comments) Applications for the Education...

27

Wind Turbine Drivetrain Condition Monitoring - An Overview (Presentation)  

SciTech Connect (OSTI)

High operation and maintenance costs still hamper the development of the wind industry despite its quick growth worldwide. To reduce unscheduled downtime and avoid catastrophic failures of wind turbines and their components have been and will be crucial to further raise the competitiveness of wind power. Condition monitoring is one of the key tools for achieving such a goal. To enhance the research and development of advanced condition monitoring techniques dedicated to wind turbines, we present an overview of wind turbine condition monitoring, discuss current practices, point out existing challenges, and suggest possible solutions.

Sheng, S.; Yang, W.

2013-07-01T23:59:59.000Z

28

Environmental determinants of unscheduled residential outages in the electrical power distribution of Phoenix, Arizona  

E-Print Network [OSTI]

Phoenix, Arizona. Consistent with perceptions of increased exposure, overhead power lines positively. In the presence of overhead lines, the interaction between birds and vegetation as well as proximity to nearest Floor, P.O. Box 875302, Tempe, AZ 85287-5302, United States b Department of Urban Design and Planning

29

attack damage due: Topics by E-print Network  

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

Cell damage extent due to irradiation with nanosecond laser pulses under cell culturing medium and dry environment Engineering Websites Summary: Autnoma de Mxico; Av....

30

aplastic crisis due: Topics by E-print Network  

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

a crisis due to doubling of fertilizer, grain, and fuel costs. New and better forage management practices 4 Aloimmunity against HLA class I antigens in patients with...

31

aqueduct stenosis due: Topics by E-print Network  

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

and Technology (POSTECH), Pohang 790-784, Republic Cambridge, University of 109 Probabilistic Naturalness Measure for Dipole Moments due to New Physics HEP - Phenomenology...

32

\\\\due.uci.edu\\due\\Files\\SAC\\CIE\\STAFF\\Duties\\REGIONS.DOC ` 09/06/13 Staff Advisor Regions  

E-Print Network [OSTI]

\\\\due.uci.edu\\due\\Files\\SAC\\CIE\\STAFF\\Duties\\REGIONS.DOC ` 09/06/13 Staff Advisor Regions UCI Study.studyabroad.uci.edu Advisor Countries/Regions (EAP & IOP) EAP Countries Chrystal Fairbanks cfairban@uci.edu (949) 824

Barrett, Jeffrey A.

33

Failure Forewarning in NPP Equipment NERI2000-109 Final Project Report  

SciTech Connect (OSTI)

The objective of this project is forewarning of machine failures in critical equipment at next-generation nuclear power plants (NPP). Test data were provided by two collaborating institutions: Duke Engineering and Services (first project year), and the Pennsylvania State University (Applied Research Laboratory) during the second and third project years. New nonlinear methods were developed and applied successfully to extract forewarning trends from process-indicative, time-serial data for timely, condition-based maintenance. Anticipation of failures in critical equipment at next-generation NPP will improve the scheduling of maintenance activities to minimize safety concerns, unscheduled non-productive downtime, and collateral damage due to unexpected failures. This approach provides significant economic benefit, and is expected to improve public acceptance of nuclear power. The approach is a multi-tiered, model-independent, and data-driven analysis that uses ORNL's novel nonlinear method to extract forewarning of machine failures from appropriate data. The first tier of the analysis provides a robust choice for the process-indicative data. The second tier rejects data of inadequate quality. The third tier removes signal artifacts that would otherwise confound the analysis, while retaining the relevant nonlinear dynamics. The fourth tier converts the artifact-filtered time-serial data into a geometric representation, that is then transformed to a discrete distribution function (DF). This method allows for noisy, finite-length datasets. The fifth tier obtains dissimilarity measures (DM) between the nominal-state DF and subsequent test-state DFs. Forewarning of a machine failure is indicated by several successive occurrences of the DM above a threshold, or by a statistically significant trend in the DM. This paradigm yields robust nonlinear signatures of degradation and its progression, allowing earlier and more accurate detection of the machine failure.

Hively, LM

2004-03-26T23:59:59.000Z

34

Spedding entry closed due to falling debris | The Ames Laboratory  

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

Spedding entry closed due to falling debris Facilities and Engineering Services, with concurrence from ESH&A, has closed the front (north) entrance of Spedding Hall to all but...

35

Rising Sea Levels Due to Global Warming Are Unstoppable  

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

Levels Due to Global Warming Are Unstoppable Mitigation can slow down but not prevent sea level rise for centuries to come August 5, 2013 Contact: Linda Vu, Lvu@lbl.gov, +1 510 495...

36

Technology Solutions Case Study: Overcoming Comfort Issues Due...  

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

Issues Due to Reduced Flow Room Air Mixing Energy efficiency upgrades reduce heating and cooling loads on a house. With enough load reduction and if the heating, ventilating, and...

37

Problems Of The Week Due March 26th  

E-Print Network [OSTI]

Problems Of The Week Due March 26th Make sure to review the guidelines before you start! You can triangle are whole numbers. The perimeter of the triangle is 110 inches and one side has measure 29 inches

Bigelow, Stephen

38

Differences in radar derived rainfall amounts due to sampling intervals  

E-Print Network [OSTI]

DIFFERENCES IN RADAR DERIVED RAINFALL AMOUNTS DUE TO SAMPLING INTERVALS A Thesis by DAVID JAMES ZDENEK Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... December 1986 Major Subject: Meteorology DIFFERENCES IN RADAR DERIVED RAINFALL AMOUNTS DUE TO SAMPLING INTERVALS A Thesis by DAVID JAMES ZDENEK Approved as to style and content by: eorge L. Huebner (Chairman of Committee) CP~ CG~& Robert C...

Zdenek, David James

1986-01-01T23:59:59.000Z

39

Sandia National Laboratories: Structural Health Monitoring  

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

and reduce downtime. A particular focus is to mitigate the large rise in costs for offshore O&M due to access difficulty, weather, high sea states, etc. using structural health...

40

Investigating the Effects of Corrosion on the Fatigue Life of Welded Steel Attachments  

E-Print Network [OSTI]

The railroad industry plays a pivotal role in commerce and greatly impacts America's economy. With this in mind, they cannot afford downtime or service interruptions due to bridge or member replacement. Corrosion of bridges causes millions...

Soape, Jack

2012-07-16T23:59:59.000Z

Note: This page contains sample records for the topic "unscheduled downtime due" 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

Parton energy loss due to synchrotron-like gluon emission  

E-Print Network [OSTI]

We develop a quasiclassical theory of the synchrotron-like gluon radiation. Our calculations show that the parton energy loss due to the synchrotron gluon emission may be important in the jet quenching phenomenon if the plasma instabilities generate a sufficiently strong chromomagnetic field. Our gluon spectrum disagrees with that obtained by Shuryak and Zahed within the Schwinger's proper time method.

B. G. Zakharov

2008-09-03T23:59:59.000Z

42

Four-nucleon potential due to exchange of pions  

SciTech Connect (OSTI)

A four-body force due to the exchange of pions has been derived by means of It includes effects corresponding to pion-pion scattering, pion production, and pion-nucleon rescattering. The strength parameters of this four-body potential are typically one order of magnitude smaller than those of the two-pion-exchange three-body force.

Robilotta, M.R.

1985-03-01T23:59:59.000Z

43

Math 110 Homework Assignment 21 due date: Mar. 18, 2013  

E-Print Network [OSTI]

Math 110 Homework Assignment 21 due date: Mar. 18, 2013 1. Consider a fish population with adult fish and young fish where the transition from one year's population to the next is 0.7 0.2 3 0 representing a 70% adult survival rate from year to year, a 20% survival rate for young fish, and the fact

Roth, Mike

44

ANSI Essential Requirements: Due process requirements for American  

E-Print Network [OSTI]

ANSI Essential Requirements: Due process requirements for American National Standards Edition: January 2010 Copyright by the American National Standards Institute (ANSI), 25 West 43rd Street, 4th Floor, New York, New York 10036. This material may be copied without permission from ANSI only

45

Plastic strain due to twinning in austenitic TWIP steels  

E-Print Network [OSTI]

Plastic strain due to twinning in austenitic TWIP steels B. Qin and H. K. D. H. Bhadeshia* Twinning induced plasticity steels are austenitic alloys in which mechanical twinning is a prominent deformation, Twinning, Twinning induced plasticity, Automobiles Introduction Mechanical twinning is a plastic

Cambridge, University of

46

Left Lateralized Enhancement of Orofacial Somatosensory Processing Due  

E-Print Network [OSTI]

JSLHR Supplement Left Lateralized Enhancement of Orofacial Somatosensory Processing Due to Speech associated with speech articulatory movements affects the perception of speech sounds and vice versa, suggesting an intimate linkage between speech production and perception systems. However, it is unclear which

47

Compressed Gas Cylinder Safety I. Background. Due to the nature  

E-Print Network [OSTI]

Compressed Gas Cylinder Safety I. Background. Due to the nature of gas cylinders hazards of a ruptured cylinder. There are almost 200 different types of materials in gas cylinders, there are several general procedures to follow for safe storage and handling of a compressed gas cylinder: II

Suzuki, Masatsugu

48

Costs of Land Subsidence Due to Groundwater Withdrawal  

E-Print Network [OSTI]

total. Of the $109.6 million, $53.2 million were incurred in 1973, principally due to a six foot tide. Probability of the occurrence of a six foot tide in any one year is 20 percent. Given five additional feet of subsidence in the study area...

Warren, J. P.; Jones, L. L.; Griffin, W. L.; Lacewell, R. D.

49

PRESSURIZATION OF FIXED ROOF STORAGE TANKS DUE TO EXTERNAL FIRES  

E-Print Network [OSTI]

PRESSURIZATION OF FIXED ROOF STORAGE TANKS DUE TO EXTERNAL FIRES Fabien FouiHen, INERIS, Parc. Reflections led on this accident have pushed to consider the phenomenon of tank pressurization as a potential initiating event of the fire ball observed. In concrete terms, when a fixed roof storage tank is surrounded

Paris-Sud XI, Université de

50

atmospheric absorption due: Topics by E-print Network  

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

atmospheric absorption due First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 The thermal infrared spectra...

51

Oil and Gas Production Optimization; Lost Potential due to Uncertainty  

E-Print Network [OSTI]

Oil and Gas Production Optimization; Lost Potential due to Uncertainty Steinar M. Elgsaeter Olav.ntnu.no) Abstract: The information content in measurements of offshore oil and gas production is often low, and when in the context of offshore oil and gas fields, can be considered the total output of production wells, a mass

Johansen, Tor Arne

52

Correction due to finite speed of light in absolute gravimeters  

E-Print Network [OSTI]

Correction due to finite speed of light is among the most inconsistent ones in absolute gravimetry. Formulas reported by different authors yield corrections scattered up to 8 $\\mu$Gal with no obvious reasons. The problem, though noted before, has never been studied, and nowadays the correction is rather postulated than rigorously proven. In this paper we investigate the problem from several prospectives, find the corrections for different types of absolute gravimeters, and establish relationships between different ways of implement them. The obtained results enabled us to analyze and understand the discrepancies in the results of other authors. We found that the correction derived from the Doppler effect is accountable only for $\\tfrac{2}{3}$ of the total correction due to finite speed of light, if no signal delays are considered. Another major source of inconsistency was found in the tacit use of simplified trajectory models.

Nagornyi, V D; Zanimonskiy, Y Y

2010-01-01T23:59:59.000Z

53

Reflection beamshifts of visible light due to graphene  

E-Print Network [OSTI]

I present theoretical calculations of reflection beamshifts, Goos-H\\"anchen and Imbert-Fedorov shifts, due to the presence of a monolayer graphene on a dielectric media when using a beam with wavelength in the visible range. Specifically, I look at beamshifts for different polarization states (p, s, $45^0$, $\\sigma^+$). The Goos-H\\"anchen shifts I calculated are in good agreement with results of a recent experiment. I will discuss other possible experimental routes to determine beamshifts in graphene.

Hermosa, N

2015-01-01T23:59:59.000Z

54

EE 511 Problem Set 7 Due on 16 Nov 2007  

E-Print Network [OSTI]

is 11 MHz, sketch SXI (f), the power spectral density of the in-phase component of the band-pass process), the cross power spectral density of the in-phase and quadrature components of the band-pass processEE 511 Problem Set 7 Due on 16 Nov 2007 1. Let ^Xt be the Hilbert transform of the W.S.S. random

Bhashyam, Srikrishna

55

ESA DUE GlobVapour water vapor products: Validation  

SciTech Connect (OSTI)

The main objective of the European Space Agency (ESA) Data User Element (DUE) GlobVapour project was the development of multi-annual global water vapor data sets. Since water vapour is a key climate variable it is important to have a good understanding of its behavior in the climate system. The ESA DUE GlobVapour project provides water vapor data, including error estimates, based on carefully calibrated and inter-calibrated satellite radiances in response to user requirements for long time series satellite observations. ESA DUE GlobVapour total columnar water vapor (TCWV) products derived from GOME/SCIA/GOME-2 (1996-2008) and SSM/I+MERIS (2003-2008) have been validated for the mentioned period, using satellite-based (AIRS, ATOVS) and ground-based measurements (radiosondes and microwave radiometer). The validation results are discussed in the following. The technical specifications on bias (1 kg/m{sup 2} for SSMI+MERIS and 2 kg/m{sup 2} for GOME/SCIA/GOME-2) are generally met. For more information, documents and data download follow the link: www.globvapour.info.

Schneider, Nadine; Schroeder, Marc; Stengel, Martin [Deutscher Wetterdienst (DWD), KU22, Frankfurter Str. 135, 63067 Offenbach a. M (Germany); Lindstrot, Ramus; Preusker, Rene [Freie Universitaet Berlin (FUB), Carl-Heinrich-Becker-Weg 6-10, 12165 Berlin (Germany); Collaboration: ESA DUE GlobVapour Consortium

2013-05-10T23:59:59.000Z

56

Optical loss due to diffraction by concentrator Fresnel lenses  

SciTech Connect (OSTI)

Fresnel lenses are widely used in concentrating photovoltaic (CPV) systems as a primary optical element. They focus sunlight on small solar cells or on the entrance apertures of secondary optical elements. A Fresnel lens consists of several prism rings and diffraction by these prism rings is unavoidable. Some of the light that would reach a designated target area according to geometric optics will miss it due to diffraction. This diffraction loss may be of relevant magnitude for CPV applications. The results of published analytical calculations are evaluated, discussed, and compared to computer simulations and measurements.

Hornung, Thorsten, E-mail: thorsten.hornung@ise.fraunhofer.de; Nitz, Peter, E-mail: thorsten.hornung@ise.fraunhofer.de [Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstr. 2, 79110 Freiburg (Germany)

2014-09-26T23:59:59.000Z

57

Q-ball Instability due to U(1) Breaking  

E-Print Network [OSTI]

Q-ball is a non-topological soliton whose stability is ensured by global U(1) symmetry. We study a Q-ball which arises in the Affleck-Dine mechanism for baryogenesis and consider its possible instability due to U(1) breaking term ($A$-term) indispensable for successful baryogenesis. It is found that the instability destroys the Q-ball if its growth rate exceeds inverse of the typical relaxation time scale of the Q-ball. However, the instability is not so strong as it obstructs the cosmological formation of the Q-balls.

Masahiro Kawasaki; Kenichiro Konya; Fuminobu Takahashi

2005-05-24T23:59:59.000Z

58

Plasma Frequency Shift Due to a Slowly Rotating Compact Star  

E-Print Network [OSTI]

We investigate the effects of a slowly rotating compact gravitational source on electron oscillations in a homogeneous electrically neutral plasma in the absence of an external electric or magnetic field. Neglecting the random thermal motion of the electrons we assume the gravitoelectromagnetic approximation to the general theory of relativity for the gravitational field. It is shown that there is a shift in the plasma frequency and hence in the dielectric constant of the plasma due to the gravitomagnetic force. We also give estimates for the difference in the frequency of radially transmitted electromagnetic signals for typical compact star candidates.

Babur M. Mirza; Hamid Saleem

2005-05-10T23:59:59.000Z

59

Rising Sea Levels Due to Global Warming Are Unstoppable  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar HomePromisingStories »SubmitterJ. Norby (2007)Rising Sea Levels Due to

60

Directives Due for Review Before 9/30/2015  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to UserProduct: CrudeOfficeNERSCDiesel pricesDirectionsDirectives Due for

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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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61

Directives Due for Review FY 2015 - DOE Directives, Delegations, and  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to UserProduct: CrudeOfficeNERSCDiesel pricesDirectionsDirectives Due

62

Due West, South Carolina: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 No revision has TypeGeothermalII Wind Farm JumpDuPontDue

63

ASCR Leadership Computing Challenge Requests for Time Due February 14  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)Productssondeadjustsondeadjust DocumentationARMStreamsUSBudget Advanced ScientificRequests for Time Due

64

Sandia National Laboratories: Due Diligence on Lead Acid Battery Recycling  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0EnergySandia InvolvesDOE-BERPressure,Fernando Garzon JointDue

65

Seismic attenuation due to wave-induced flow  

SciTech Connect (OSTI)

Analytical expressions for three P-wave attenuation mechanisms in sedimentary rocks are given a unified theoretical framework. Two of the models concern wave-induced flow due to heterogeneity in the elastic moduli at mesoscopic scales (scales greater than grain sizes but smaller than wavelengths). In the first model, the heterogeneity is due to lithological variations (e.g., mixtures of sands and clays) with a single fluid saturating all the pores. In the second model, a single uniform lithology is saturated in mesoscopic ''patches'' by two immiscible fluids (e.g., air and water). In the third model, the heterogeneity is at ''microscopic'' grain scales (broken grain contacts and/or micro-cracks in the grains) and the associated fluid response corresponds to ''squirt flow''. The model of squirt flow derived here reduces to proper limits as any of the fluid bulk modulus, crack porosity, and/or frequency is reduced to zero. It is shown that squirt flow is incapable of explaining the measured level of loss (10{sup -2} < Q{sup -1} < 10{sup -1}) within the seismic band of frequencies (1 to 10{sup 4} Hz); however, either of the two mesoscopic scale models easily produce enough attenuation to explain the field data.

Pride, S.R.; Berryman, J.G.; Harris, J.M.

2003-10-09T23:59:59.000Z

66

Moisture Risk in Unvented Attics Due to Air Leakage Paths  

SciTech Connect (OSTI)

IBACOS completed an initial analysis of moisture damage potential in an unvented attic insulated with closed-cell spray polyurethane foam. To complete this analysis, the research team collected field data, used computational fluid dynamics to quantify the airflow rates through individual airflow (crack) paths, simulated hourly flow rates through the leakage paths with CONTAM software, correlated the CONTAM flow rates with indoor humidity ratios from Building Energy Optimization software, and used Warme und Feuchte instationar Pro two-dimensional modeling to determine the moisture content of the building materials surrounding the cracks. Given the number of simplifying assumptions and numerical models associated with this analysis, the results indicate that localized damage due to high moisture content of the roof sheathing is possible under very low airflow rates. Reducing the number of assumptions and approximations through field studies and laboratory experiments would be valuable to understand the real-world moisture damage potential in unvented attics.

Prahl, D.; Shaffer, M.

2014-11-01T23:59:59.000Z

67

Comments on Landau damping due to synchrotron frequency spread  

SciTech Connect (OSTI)

An inductive/space-charge impedance shifts the synchrotron frequency downwards above/below transition, but it is often said that the coherent synchrotron frequency of the bunch is not shifted in the rigid-dipole mode. On the other hand, the incoherent synchrotron frequency due to the sinusoidal rf always spreads in the downward direction. This spread will therefore not be able to cover the coherent synchrotron frequency, implying that there will not be any Landau damping no matter how large the frequency spread is. By studying the dispersion relation, it is shown that the above argument is incorrect, and there will be Landau damping if there is sufficient frequency spread. The main reason is that the coherent frequency of the rigid-dipole mode will no longer remain unshifted in the presence of a synchrotron frequency spread.

Ng, K.Y.; /Fermilab

2005-01-01T23:59:59.000Z

68

Excitation of flow instabilities due to nonlinear scale invariance  

SciTech Connect (OSTI)

A novel route to instabilities and turbulence in fluid and plasma flows is presented in kinetic Vlasov-Maxwell model. New kind of flow instabilities is shown to arise due to the availability of new kinetic energy sources which are absent in conventional treatments. The present approach is based on a scale invariant nonlinear analytic formalism developed to address irregular motions on a chaotic attractor or in turbulence in a more coherent manner. We have studied two specific applications of this turbulence generating mechanism. The warm plasma Langmuir wave dispersion relation is shown to become unstable in the presence of these multifractal measures. In the second application, these multifractal measures are shown to induce naturally non-Gaussian, i.e., a stretched, Gaussian distribution and anomalous transport for tracer particles from the turbulent advection-diffusion transport equation in a Vlasov plasma flow.

Prasad Datta, Dhurjati, E-mail: dp-datta@yahoo.com [Department of Mathematics, University of North Bengal, Siliguri, West Bengal 734013 (India); Sen, Sudip [National Institute of Aerospace (NASA-LaRC), 100 Exploration Way, Hampton, Virginia 23666 (United States); College of William and Mary, Williamsburg, Virginia 23187 (United States)

2014-05-15T23:59:59.000Z

69

Changes in Dimethyl Sulfide Oceanic Distribution due to Climate Change  

SciTech Connect (OSTI)

Dimethyl sulfide (DMS) is one of the major precursors for aerosols and cloud condensation nuclei in the marine boundary layer over much of the remote ocean. Here they report on coupled climate simulations with a state-of-the-art global ocean biogeochemical model for DMS distribution and fluxes using present-day and future atmospheric CO{sub 2} concentrations. They find changes in zonal averaged DMS flux to the atmosphere of over 150% in the Southern Ocean. This is due to concurrent sea ice changes and ocean ecosystem composition shifts caused by changes in temperature, mixing, nutrient, and light regimes. The largest changes occur in a region already sensitive to climate change, so any resultant local CLAW/Gaia feedback of DMS on clouds, and thus radiative forcing, will be particularly important. A comparison of these results to prior studies shows that increasing model complexity is associted with reduced DMS emissions at the equator and increased emissions at high latitudes.

Cameron-Smith, P; Elliott, S; Maltrud, M; Erickson, D; Wingenter, O

2011-02-16T23:59:59.000Z

70

Optical analog of Rabi oscillation suppression due to atomic motion  

E-Print Network [OSTI]

The Rabi oscillations of a two-level atom illuminated by a laser on resonance with the atomic transition may be suppressed by the atomic motion through averaging or filtering mechanisms. The optical analogs of these velocity effects are described. The two atomic levels correspond in the optical analogy to orthogonal polarizations of light and the Rabi oscillations to polarization oscillations in a medium which is optically active, naturally or due to a magnetic field. In the later case, the two orthogonal polarizations could be selected by choosing the orientation of the magnetic field, and one of them be filtered out. It is argued that the time-dependent optical polarization oscillations or their suppression are observable with current technology.

J. G. Muga; B. Navarro

2005-05-13T23:59:59.000Z

71

Simulating environmental changes due to marine hydrokinetic energy installations.  

SciTech Connect (OSTI)

Marine hydrokinetic (MHK) projects will extract energy from ocean currents and tides, thereby altering water velocities and currents in the site's waterway. These hydrodynamics changes can potentially affect the ecosystem, both near the MHK installation and in surrounding (i.e., far field) regions. In both marine and freshwater environments, devices will remove energy (momentum) from the system, potentially altering water quality and sediment dynamics. In estuaries, tidal ranges and residence times could change (either increasing or decreasing depending on system flow properties and where the effects are being measured). Effects will be proportional to the number and size of structures installed, with large MHK projects having the greatest potential effects and requiring the most in-depth analyses. This work implements modification to an existing flow, sediment dynamics, and water-quality code (SNL-EFDC) to qualify, quantify, and visualize the influence of MHK-device momentum/energy extraction at a representative site. New algorithms simulate changes to system fluid dynamics due to removal of momentum and reflect commensurate changes in turbulent kinetic energy and its dissipation rate. A generic model is developed to demonstrate corresponding changes to erosion, sediment dynamics, and water quality. Also, bed-slope effects on sediment erosion and bedload velocity are incorporated to better understand scour potential.

Jones, Craig A. (Sea Engineering Inc., Santa Cruz, CA); James, Scott Carlton; Roberts, Jesse Daniel (Sandia National Laboratories, Albuquerque, NM); Seetho, Eddy

2010-08-01T23:59:59.000Z

72

Light defection due to a charged, rotating body  

E-Print Network [OSTI]

According to GTR and subsequent developments in the field, it is known that there are three factors namely mass, rotation and charge that can influence the space-time geometry. Accordingly, we discuss the effect of space-time geometry of a charged, rotating body on the motion of the light ray. We obtained the expression for equatorial defection of light due to such a body up to fourth order term. In our expression for defection angle it is clear that charge can influence the path of light ray. We used the null geodesic approach of light ray for our calculation. If we set the charge to zero our expression of bending angle gets reduced to the Kerr equatorial bending angle.If we set rotation to zero our expression reduces to Resinner-Nordstr$\\ddot{o}$m defection angle and if we set both charge and rotation to zero our expression reduces to Schwarzschild bending angle. However, we get non-zero bending angle for a hypothetical massless, rotating, charged body.

Sarani Chakraborty; A. K. Sen

2014-06-05T23:59:59.000Z

73

SUPPRESSION OF DIELECTRONIC RECOMBINATION DUE TO FINITE DENSITY EFFECTS  

SciTech Connect (OSTI)

We have developed a general model for determining density-dependent effective dielectronic recombination (DR) rate coefficients in order to explore finite-density effects on the ionization balance of plasmas. Our model consists of multiplying by a suppression factor those highly-accurate total zero-density DR rate coefficients which have been produced from state-of-the-art theoretical calculations and which have been benchmarked by experiment. The suppression factor is based upon earlier detailed collision-radiative calculations which were made for a wide range of ions at various densities and temperatures, but used a simplified treatment of DR. A general suppression formula is then developed as a function of isoelectronic sequence, charge, density, and temperature. These density-dependent effective DR rate coefficients are then used in the plasma simulation code Cloudy to compute ionization balance curves for both collisionally ionized and photoionized plasmas at very low (n{sub e} = 1 cm{sup -3}) and finite (n{sub e} = 10{sup 10} cm{sup -3}) densities. We find that the denser case is significantly more ionized due to suppression of DR, warranting further studies of density effects on DR by detailed collisional-radiative calculations which utilize state-of-the-art partial DR rate coefficients. This is expected to impact the predictions of the ionization balance in denser cosmic gases such as those found in nova and supernova shells, accretion disks, and the broad emission line regions in active galactic nuclei.

Nikolic, D.; Gorczyca, T. W.; Korista, K. T. [Western Michigan University, Kalamazoo, MI (United States); Ferland, G. J. [University of Kentucky, Lexington, KY (United States); Badnell, N. R. [University of Strathclyde, Glasgow (United Kingdom)

2013-05-01T23:59:59.000Z

74

Periodic fluctuations in deep water formation due to sea ice  

E-Print Network [OSTI]

During the last ice age several quasi-periodic abrupt warming events took place. Known as Dansgaard-Oeschger (DO) events their effects were felt globally, although the North Atlantic experienced the largest temperature anomalies. Paleoclimate data shows that the fluctuations often occurred right after massive glacial meltwater releases in the North Atlantic and in bursts of three or four with progressively decreasing strengths. In this study a simple dynamical model of an overturning circulation and sea ice is developed with the goal of understanding the fundamental mechanisms that could have caused the DO events. Interaction between sea ice and the overturning circulation in the model produces self-sustained oscillations. Analysis and numerical experiments reveal that the insulating effect of sea ice causes the ocean to periodically vent out accumulated heat in the deep ocean into the atmosphere. Subjecting the model to idealized freshwater forcing mimicking Heinrich events causes modulation of the natural periodicity and produces burst patterns very similar to what is observed in temperature proxy data. Numerical experiments with the model also suggests that the characteristic period of 1,500 years is due to the geometry, or the effective heat capacity, of the ocean that comes under sea ice cover.

Raj Saha

2015-02-21T23:59:59.000Z

75

Comment on "Air Emissions Due to Wind and Solar Power" and Supporting Information  

E-Print Network [OSTI]

due to wind and solar power. Environ. Sci. Technol. (2)Emissions Due to Wind and Solar Power Andrew Mills, ? , due to wind and solar power. Environ. Sci. Technol. (2)

Mills, Andrew D.

2011-01-01T23:59:59.000Z

76

E-Print Network 3.0 - air pollution due Sample Search Results  

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

due Search Powered by Explorit Topic List Advanced Search Sample search results for: air pollution due Page: << < 1 2 3 4 5 > >> 1 Air Quality: Reporting Requirements Department:...

77

Black Bear Prep plant replaces high-frequency screens with fine wire sieves  

SciTech Connect (OSTI)

At the Black Bear prep plant (near Wharncliffe, WV, USA) the clean coal from the spirals traditionally reported to high-frequency screens, which removed high-ash clay fines. Screens have inherent inefficiencies that allow clean coal to report to the screen underflow. The goal of this project was to capture the maximum amount of spiral clean coal while still removing the high-ash clay material found in the spiral product. The reduction of the circulating load and plant downtime for unscheduled maintenance were projected as additional benefits. After the plant upgrade, the maintenance related to the high frequency screens was eliminated and an additional 2.27 tons per hour (tph) of fine coal was recovered, which resulted in a payback period of less than one year. The article was adapted from a paper presented at Coal Prep 2007 in April 2007, Lexington, KY, USA. 1 ref., 1 fig., 1 tab.

Barbee, C.J.; Nottingham, J.

2007-12-15T23:59:59.000Z

78

difference between plants receiving different treatments. Furthermore, if any difference is detected, one cannot say for sure whether the difference is due to the water gradient or due  

E-Print Network [OSTI]

difference between plants receiving different treatments. Furthermore, if any difference is detected, one cannot say for sure whether the difference is due to the water gradient or due to the differences between treatment. Obviously, any conclusions reached from analyzing the data will be meaningless

Oyet, Alwell

79

Wind turbine reliability : understanding and minimizing wind turbine operation and maintenance costs.  

SciTech Connect (OSTI)

Wind turbine system reliability is a critical factor in the success of a wind energy project. Poor reliability directly affects both the project's revenue stream through increased operation and maintenance (O&M) costs and reduced availability to generate power due to turbine downtime. Indirectly, the acceptance of wind-generated power by the financial and developer communities as a viable enterprise is influenced by the risk associated with the capital equipment reliability; increased risk, or at least the perception of increased risk, is generally accompanied by increased financing fees or interest rates. Cost of energy (COE) is a key project evaluation metric, both in commercial applications and in the U.S. federal wind energy program. To reflect this commercial reality, the wind energy research community has adopted COE as a decision-making and technology evaluation metric. The COE metric accounts for the effects of reliability through levelized replacement cost and unscheduled maintenance cost parameters. However, unlike the other cost contributors, such as initial capital investment and scheduled maintenance and operating expenses, costs associated with component failures are necessarily speculative. They are based on assumptions about the reliability of components that in many cases have not been operated for a complete life cycle. Due to the logistical and practical difficulty of replacing major components in a wind turbine, unanticipated failures (especially serial failures) can have a large impact on the economics of a project. The uncertainty associated with long-term component reliability has direct bearing on the confidence level associated with COE projections. In addition, wind turbine technology is evolving. New materials and designs are being incorporated in contemporary wind turbines with the ultimate goal of reducing weight, controlling loads, and improving energy capture. While the goal of these innovations is reduction in the COE, there is a potential impact on reliability whenever new technologies are introduced. While some of these innovations may ultimately improve reliability, in the short term, the technology risks and the perception of risk will increase. The COE metric used by researchers to evaluate technologies does not address this issue. This paper outlines the issues relevant to wind turbine reliability for wind turbine power generation projects. The first sections describe the current state of the industry, identify the cost elements associated with wind farm O&M and availability and discuss the causes of uncertainty in estimating wind turbine component reliability. The latter sections discuss the means for reducing O&M costs and propose O&M related research and development efforts that could be pursued by the wind energy research community to reduce COE.

Not Available

2004-11-01T23:59:59.000Z

80

CITI Program Website Downtime for Software Upgrade Starting Monday 29 July at 11 a.m. U.S. Eastern Daylight Time, the CITI Program website will be  

E-Print Network [OSTI]

.S. Eastern Daylight Time, the CITI Program website will be unavailable for approximately two to three days

Note: This page contains sample records for the topic "unscheduled downtime due" 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

E-Print Network 3.0 - avoid blackout due Sample Search Results  

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

results for: avoid blackout due Page: << < 1 2 3 4 5 > >> 1 134 IEEE TRANSACTIONS ON RELIABILITY, VOL. 60, NO. 1, MARCH 2011 Exploring Complex Systems Aspects of Summary: due to...

82

E-Print Network 3.0 - artificial fracture due Sample Search Results  

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

fracture due Search Powered by Explorit Topic List Advanced Search Sample search results for: artificial fracture due Page: << < 1 2 3 4 5 > >> 1 PROCEEDINGS, Thirty-Fifth Workshop...

83

Physics 116A Homework Set #2 Winter 2011 DUE: TUESDAY JANUARY 18, 2011  

E-Print Network [OSTI]

Physics 116A Homework Set #2 Winter 2011 DUE: TUESDAY JANUARY 18, 2011 Due to Martin Luther King as they are deposited in my physics department mailbox no later than 5 pm on Wednesday January 19. To receive full

California at Santa Cruz, University of

84

Government Benefits and the Rule of Law: Toward a Standards-Based Theory of Due Process  

E-Print Network [OSTI]

Under the Supreme Court's current due process jurisprudence, due process applies only when government actors deprive a person of a protected interest in life, liberty, or property, and government benefits are property only when has an entitlement...

Levy, Richard E.; Shapiro, Sidney A.

2006-01-01T23:59:59.000Z

85

Due Cut  

E-Print Network [OSTI]

rucksack, he could hear the question in his own voice?the nearly forlorn sound of it. Perhaps Ray had been right to emphasize that there would be only cm friendship between them in the future, as there had been in the past. Before Victoria. Before... risking whiplash trying to keep track of the f?? things that had changed. Ray took Fraser's rucksack and dumped it in the bedroom, while Dief climbed into the red chair that no one else sat in any more. Fraser stood still for a moment then started...

Glasgow, M.F.

2002-01-01T23:59:59.000Z

86

EPR Line Shifts and Line Shape Changes due to Spin Exchange of Nitroxide Free Radicals in Liquids: 6. Separating Line Broadening due to Spin Exchange and Dipolar Interactions  

E-Print Network [OSTI]

EPR Line Shifts and Line Shape Changes due to Spin Exchange of Nitroxide Free Radicals in Liquids 23, 2008; ReVised Manuscript ReceiVed: January 12, 2009 EPR spectra of perdeuterated 2

Bales, Barney

87

Wireless Sensor Network for Advanced Energy Management Solutions  

SciTech Connect (OSTI)

Eaton has developed an advanced energy management solution that has been deployed to several Industries of the Future (IoF) sites. This demonstrated energy savings and reduced unscheduled downtime through an improved means for performing predictive diagnostics and energy efficiency estimation. Eaton has developed a suite of online, continuous, and inferential algorithms that utilize motor current signature analysis (MCSA) and motor power signature analysis (MPSA) techniques to detect and predict the health condition and energy usage condition of motors and their connect loads. Eaton has also developed a hardware and software platform that provided a means to develop and test these advanced algorithms in the field. Results from lab validation and field trials have demonstrated that the developed advanced algorithms are able to detect motor and load inefficiency and performance degradation. Eaton investigated the performance of Wireless Sensor Networks (WSN) within various industrial facilities to understand concerns about topology and environmental conditions that have precluded broad adoption by the industry to date. A Wireless Link Assessment System (WLAS), was used to validate wireless performance under a variety of conditions. Results demonstrated that wireless networks can provide adequate performance in most facilities when properly specified and deployed. Customers from various IoF expressed interest in applying wireless more broadly for selected applications, but continue to prefer utilizing existing, wired field bus networks for most sensor based applications that will tie into their existing Computerized Motor Maintenance Systems (CMMS). As a result, wireless technology was de-emphasized within the project, and a greater focus placed on energy efficiency/predictive diagnostics. Commercially available wireless networks were only utilized in field test sites to facilitate collection of motor wellness information, and no wireless sensor network products were developed under this project. As an outgrowth of this program, Eaton developed a patented energy-optimizing drive control technology that is complementary to a traditional variable frequency drives (VFD) to enable significant energy savings for motors with variable torque applications, such as fans, pumps, and compressors. This technology provides an estimated energy saving of 2%-10% depending on the loading condition, in addition to the savings obtained from a traditional VFD. The combination of a VFD with the enhanced energy-optimizing controls will provide significant energy savings (10% to 70% depending on the load and duty cycle) for motors that are presently connected with across the line starters. It will also provide a more favorable return on investment (ROI), thus encouraging industries to adopt VFDs for more motors within their facilities. The patented technology is based on nonintrusive algorithms that estimate the instantaneous operating efficiency and motor speed and provide active energy-optimizing control of a motor, using only existing voltage and current sensors. This technology is currently being commercialized by Eatons Industrial Controls Division in their next generation motor control products. Due to the common nonintrusive and inferential nature of various algorithms, this same product can also include motor and equipment condition monitoring features, providing the facility owner additional information to improve process uptime and the associated energy savings. Calculations estimated potential energy savings of 261,397GWh/Yr ($15.7B/yr), through retrofitting energy-optimizing VFDs into existing facilities, and incorporating the solution into building equipment sold by original equipment manufacturers (OEMs) and installed by mechanical and electrical contractors. Utilizing MCSA and MPSA for predictive maintenance (PM) of motors and connected equipment reduces process downtime cost and the cost of wasted energy associated with shutting down and restarting the processes. Estimated savings vary depending on the industry segment and equi

Peter J. Theisen; Bin Lu, Charles J. Luebke

2009-09-23T23:59:59.000Z

88

aphthous-like ulceration due: Topics by E-print Network  

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

and Technology (POSTECH), Pohang 790-784, Republic Cambridge, University of 135 Probabilistic Naturalness Measure for Dipole Moments due to New Physics HEP - Phenomenology...

89

atlanto-axial subluxation due: Topics by E-print Network  

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

and Technology (POSTECH), Pohang 790-784, Republic Cambridge, University of 86 Probabilistic Naturalness Measure for Dipole Moments due to New Physics HEP - Phenomenology...

90

E-Print Network 3.0 - assessment influence due Sample Search...  

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

Evaluating safety instrumented systems SIS reliabil- ity has been necessary due... offshore, military, or nuclear power plant activities. However, the influencing fac- tors...

91

E-Print Network 3.0 - amelogenesis imperfecta due Sample Search...  

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

Materials Science ; Biotechnology 58 Combining High-resolution Micro computed Tomography with Material Summary: in assessing bone volumetric density is severely limited due...

92

Elastic uplift in southeast Greenland due to rapid ice mass loss Shfaqat A. Khan,1  

E-Print Network [OSTI]

Elastic uplift in southeast Greenland due to rapid ice mass loss Shfaqat A. Khan,1 John Wahr,2] The rapid unloading of ice from the southeastern sector of the Greenland ice sheet between 2001 and 2006), Elastic uplift in southeast Greenland due to rapid ice mass loss, Geophys. Res. Lett., 34, L21701, doi:10

Larson, Kristine

93

NOAA Technical Memorandum OAR PMEL-121 ATLAS Module Temperature Bias Due to Solar  

E-Print Network [OSTI]

NOAA Technical Memorandum OAR PMEL-121 ATLAS Module Temperature Bias Due to Solar Heating P.N. A. . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Temperature time series from a 1 m Seacat, NX Modules at 1 m and 10 m, and downwelling solar values for a given day. . 6 #12;iv Contents #12;ATLAS Module Temperature Bias Due to Solar Heating P.N. A

94

Online Pipeline Transportation of Petroleum Products with no Due Dates 1  

E-Print Network [OSTI]

On­line Pipeline Transportation of Petroleum Products with no Due Dates 1 Ruy Luiz Milidi'u milidiu, 2001 Abstract: In this paper, we introduce a new model for pipeline transportation of petroleum products without due dates. We use a directed multigraph G where arcs represent pipes and nodes represent

Endler, Markus

95

KILLING OF TARGET CELLS DUE TO RADON PROGENY IN THE HUMAN LUNG  

E-Print Network [OSTI]

KILLING OF TARGET CELLS DUE TO RADON PROGENY IN THE HUMAN LUNG B. M. F. Lau1 , D. Nikezic1,2 and K to inhaled radon progeny in the human lung. The present work uses the microdosimetric approach and determines- ratory tract (HRT) due to inhaled radon progeny, ICRP66(1) made use of the absorbed fraction (AF) which

Yu, K.N.

96

COSTS OF WATER TREATMENT DUE TO DIMINISHED WATER QUALITY: A CASE STUDY IN TEXAS  

E-Print Network [OSTI]

COSTS OF WATER TREATMENT DUE TO DIMINISHED WATER QUALITY: A CASE STUDY IN TEXAS David Dearmont and Resources Portland State University P O Box 751 Portland OR 97207-0751 October, 1997 Draft of paper in Water Resources Research, 34(4), 849-854, 1998. #12;2 CHEMICAL COSTS OF WATER TREATMENT DUE TO DIMINISHED WATER

McCarl, Bruce A.

97

Global warming due to increasing absorbed solar radiation Kevin E. Trenberth1  

E-Print Network [OSTI]

Global warming due to increasing absorbed solar radiation Kevin E. Trenberth1 and John T. Fasullo1 from an energy budget standpoint comes from increases in absorbed solar radiation that stem directly. T. Fasullo (2009), Global warming due to increasing absorbed solar radiation, Geophys. Res. Lett

Fasullo, John

98

Limitations and Trade-offs in Gene Expression due to Competition for Shared Cellular Resources  

E-Print Network [OSTI]

Limitations and Trade-offs in Gene Expression due to Competition for Shared Cellular Resources- lational resources in the cell. The fact that these common resources are available only in limited amounts, and surprisingly, as activators to each other, purely due to the limited availability of shared cellular resources

Del Vecchio, Domitilla

99

Policy Name: Closing due to Indoor Temperature Extremes Originating/Responsible Department: Facilities Management and Planning  

E-Print Network [OSTI]

Policy Name: Closing due to Indoor Temperature Extremes Originating/Responsible Department to be followed in the event that indoor temperature extremes prompt the closing of any building or work area. The closing of any building or work area due to indoor temperatures extremes shall be subject to operational

Dawson, Jeff W.

100

Estimation of economic impact of freight distribution due to highway closure  

E-Print Network [OSTI]

The main aim of this study is to provide a theoretical framework and methodology to estimate and analyze the economic impact of freight disruption due to highway closure. The costs in this study will be classified into ...

Hu, Shiyin

2008-01-01T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


101

E-Print Network 3.0 - aquatic biota due Sample Search Results  

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

aquatic biota due Page: << < 1 2 3 4 5 > >> 1 COMBINED ECOLOGICAL RISK ASSESSMENT OF SEDIMENT AND WATER COLUMN CONTAMINATED BY DIFFUSE POLLUTION Summary: by the authors to assess...

102

Characterization of unsteady loading due to impeller-diffuser interaction in centrifugal compressors  

E-Print Network [OSTI]

Time dependent simulations are used to characterize the unsteady impeller blade loading due to imipeller-diffuser interaction in centrifugal compressor stages. The capability of simulations are assessed by comparing results ...

Lusardi, Christopher (Christopher Dean)

2012-01-01T23:59:59.000Z

103

Research Advisor Agreement (Due March 1, 2014) School of Engineering and Applied Sciences  

E-Print Network [OSTI]

Research Advisor Agreement (Due March 1, 2014) School of Engineering and Applied Sciences Student Name: Last First Middle HUID Research Advisor to activate your RA pay. Research Advisor Role: The research advisor is expected to chair the qualifying

Chen, Yiling

104

Strategies for mitigating adverse environmental impacts due to structural building materials  

E-Print Network [OSTI]

This thesis assesses the problem of adverse environmental impacts due to the use of Portland cement and structural steel in the construction industry. The thesis outlines three technology and policy strategies to mitigate ...

Chaturvedi, Swati, 1976-

2004-01-01T23:59:59.000Z

105

Development of a research methodology to study lumber waste due to design causes in residential construction  

E-Print Network [OSTI]

Residential Construction faces problems regarding inefficiencies of material usage. Builders pay twice for the lumber that is wasted. Once when it is purchased and once when it is disposed. Part of the lumber waste is generated due to the design...

Vyas, Ashok Madhusudan

2012-06-07T23:59:59.000Z

106

Analytical determination of performance degradation on a helicopter main rotor due to ice accretion  

E-Print Network [OSTI]

ANALYTICAL DETERMINATION OF PERFORMANCE DEGRADATION ON A HELICOPTER MAIN ROTOR DUE TO ICE ACCRETION A Thesis by JAVIER CAMBA III Submitted to the Graduate College of Texas AIIM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1986 Major Subject: Aerospace Engineering ANALYTICAL DETERMINATION OF PERFORMANCE DEGRADATION ON A HELICOPTER MAIN ROTOR DUE TO ICE ACCRETION A Thesis by JAVIER CAMBA III Approval as to style and content by...

Camba, Javier

1986-01-01T23:59:59.000Z

107

A conceptual model for determining yield loss due to drought stress in sorghum  

E-Print Network [OSTI]

A CONCEPTUAL MODEL FOR DETERMINING YIELD LOSS DUE TO DROUGHT STRESS IN SORGHUM A Thesis by PAUL ROBERT KOCH Submitted to the Graduate College of Texas AkM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE May 1987 Major Subject: Agricultural Engineering A CONCEPTUAL MODEL FOR DETERMINING YIELD LOSS DUE TO DROUGHT STRESS IN SORGHUM A thesis by PAUL ROBERT KOCH Approved as to style and content by: Marshall J. McFarland (Chair of Committee...

Koch, Paul Robert

1987-01-01T23:59:59.000Z

108

The assessment of mixing/solid suspension in a slab tank due to vibratory agitation  

E-Print Network [OSTI]

THE ASSESSMENT OF MIXING/SOLID SUSPENSION IN A SLAB TANK DUE TO VIBRATORY AGITATION A Thesis by CHRISTOPHER JOSEPH RAMSEY Submitted to the Graduate College of Texas AkM University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE August 1988 Major Subject: Mechanical Engineering THE ASSESSMENT OF MIXING/SOLID SUSPENSION IN A SLAB TANK DUE TO VIBRATORY AGITATION A Thesis by CHRISTOPHER JOSEPH RAMSEY Approved as to style and content by: Gar B. Tatterson...

Ramsey, Christopher Joseph

1988-01-01T23:59:59.000Z

109

Model study of shoreline changes due to a series of offshore breakwaters  

E-Print Network [OSTI]

MODEL STUDY OF SHORELINE CHANGES DUE TO A SERIES OF OFFSHORE BREAKHATERS A Thesis by DONALD ALAN CORDS Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... May 1986 Hajor Subject: Ocean Engineering NODEL STUDY OF SHORELINE CHANGES DUE TD A SERIES OF OFFSHORE BREAKHATERS A Thesis by DONALD ALAN CORDS Approved as to style and content by: ohn . er sc (Chairman) o ert . a a (Nember ) o er . ei...

Cords, Donald Alan

2012-06-07T23:59:59.000Z

110

Disclosures due to Health Care Reform Changes Disclosure of Grandfather Status  

E-Print Network [OSTI]

Disclosures due to Health Care Reform Changes Disclosure of Grandfather Status UCSD Medical Center of the Affordable Care Act that apply to other plans. Grandfathered health plans must comply with certain other believes this health plan coverage is a "grandfathered health plan" under the Patient Protection

Gleeson, Joseph G.

111

Mnoa Green Days Checklist for Buildings Being Closed Due to AC Shutdown  

E-Print Network [OSTI]

Mnoa Green Days Checklist for Buildings Being Closed Due to AC Shutdown The following Mnoa Green Days in which air conditioning to participating buildings will be shutdown over the weekends is a checklist for building occupants to use as a reference to successfully conserve energy during the Expanded

Wang, Yuqing

112

N2 DISSOCIATION IN THE MESOSPHERE DUE TO SECONDARY ELECTRONS DURING A SOLAR  

E-Print Network [OSTI]

) Sodankylä Geophysical Observatory, Sodankylä, Finland. (pekka.verronen@fmi.fi/+358-9-19294603) Solar protonN2 DISSOCIATION IN THE MESOSPHERE DUE TO SECONDARY ELECTRONS DURING A SOLAR PROTON EVENT, Helsinki, Finland. (2) Institute of Astronomy of the Russian Academy of Sciences, Moscow, Russia. (3

Ulich, Thomas

113

Deformation of a liquid surface due to an impinging gas jet: A conformal mapping approach  

E-Print Network [OSTI]

on it. The problem of a gas jet impinging on a liquid surface arises in several important industrialDeformation of a liquid surface due to an impinging gas jet: A conformal mapping approach Andong He to convert it to steel known as the basic oxygen conversion process1 . In the arc welding process, a high

114

Suppression of 2 phase-slip due to hidden zero modes in one dimensional topological superconductors  

E-Print Network [OSTI]

Suppression of 2 phase-slip due to hidden zero modes in one dimensional topological superconductors-dimensional topological superconducting wires. These wires have been proposed as building blocks for topologically in decoherence. Phase slips in topological superconductors are peculiar for the reason that they occur

Yanikoglu, Berrin

115

Eects of convection instability due to incompatibility between ocean dynamics and surface forcings  

E-Print Network [OSTI]

- bility between a surface temperature climatology and a given ocean model, into which the climatology by thermal and wind forcing only. Initially, the temperature climatology is forcefully assimilated climatology. In areas characterized by sharp oceanic fronts and high convective activity, the OGCM, due

Paris-Sud XI, Université de

116

Experimental Study on Impact Load on a Dam Due to Debris Flow1  

E-Print Network [OSTI]

as a fluid hits the dam (fluid impact load). The former tends to cause partial break of the concrete damExperimental Study on Impact Load on a Dam Due to Debris Flow1 lwao Miyoshi2 ABSTRACT When a dam is struck by mud or debris flow, it is put under a great impact load and sometimes is destroyed. To prevent

Standiford, Richard B.

117

Connectivity due to preferential flow controls water flow and solute transport at the hillslope scale  

E-Print Network [OSTI]

feedback, flow through the fractured bedrock, kinematic wave routing and flow through discrete preferentialConnectivity due to preferential flow controls water flow and solute transport at the hillslope the major controls on water flow and solute transport at the hillslope scale remains a major topic

Weiler, Markus

118

Computational Modeling of Rotor Blade Performance Degradation Due to Ice Accretion  

E-Print Network [OSTI]

PENNSTATE _ Computational Modeling of Rotor Blade Performance Degradation Due to Ice Accretion, 2013 9:00 a.m. 301 Steidle Building Ice accretion on helicopter rotor blades can cause significant. If unabated, rotor ice can accumulate to the point where the vehicle can no longer maintain flight

Maroncelli, Mark

119

Academy Fellowships in Medical Education Applications due 5 pm Friday, March 8, 2013  

E-Print Network [OSTI]

Academy Fellowships in Medical Education Applications due 5 pm Friday, March 8, 2013 The Academy in medical education for the Fellowship Period July 1, 2013, to June 30, 2014. The Academy Fellowship development project, or a learner assessment or educational research educational project. The Academy Fellow

Paulsson, Johan

120

Metabolic transformation of microalgae due to light acclimation and genetic modifications  

E-Print Network [OSTI]

and hydrogen for biofuel alternatives.13 Cellular metabolism of microalgae, including C. reinhardtiiMetabolic transformation of microalgae due to light acclimation and genetic modifications followed microalga species and their genetic variants, grown under varied environmental conditions, has become

Vertes, Akos

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


121

Electrical Detection of Spin Pumping due to the Precessing Magnetization of a Single Ferromagnet  

E-Print Network [OSTI]

Electrical Detection of Spin Pumping due to the Precessing Magnetization of a Single Ferromagnet M of spin pumping, using a lateral normal-metal/ferromagnet/normal- metal device, where a single ferromagnet in ferromagnetic resonance pumps spin-polarized electrons into the normal metal, resulting in spin accumulation

van der Wal, Caspar H.

122

Characterization and removal of errors due to local magnetic anomalies in directional drilling Nathan Hancock*  

E-Print Network [OSTI]

Characterization and removal of errors due to local magnetic anomalies in directional drilling of Geophysics, Colorado School of Mines Summary Directional drilling has evolved over the last few decades utilizes a technique known as magnetic Measurement While Drilling (MWD). Vector measurements of geomagnetic

123

Renewable Energy Papers and Presentations Paper due Wednesday 16 October 2013 at 12:00 midnight  

E-Print Network [OSTI]

Renewable Energy Papers and Presentations Paper due Wednesday 16 October 2013 at 12:00 midnight with specific focus on an aspect related to renewable energy. The topic should not be too broad. The length;Hybrid solar wind (83) Off grid systems (58) Smart grid storage (28) #12;

Coles, Cynthia

124

High-Molecular-Weight Polyethylene Glycol Prevents Lethal Sepsis Due to Intestinal Pseudomonas aeruginosa  

E-Print Network [OSTI]

High-Molecular-Weight Polyethylene Glycol Prevents Lethal Sepsis Due to Intestinal Pseudomonas of this study were to test the ability of a high-molecular- weight polyethylene glycol compound, polyethylene: The ability of polyethylene glycol 15­20 to protect the intestinal epi- thelium against the opportunistic

Lee, Ka Yee C.

125

Greenhouse Gas Pollution in the Stratosphere Due to Increasing Airplane Traffic, Effects On the Environment  

E-Print Network [OSTI]

Greenhouse Gas Pollution in the Stratosphere Due to Increasing Airplane Traffic, Effects On the Environment Katta G. Murty Department of Industrial and Operations Engineering University of Michigan, Ann to tremendous increases in the construction of huge airport facilities, the development of large jumbo

Murty, Katta G.

126

Radiation due to Josephson Oscillations in Layered Superconductors L. N. Bulaevskii1  

E-Print Network [OSTI]

Radiation due to Josephson Oscillations in Layered Superconductors L. N. Bulaevskii1 and A. E 2007) We derive the power of direct radiation into free space induced by Josephson oscillations to the current-voltage characteristic in this regime depends only on crystal shape. We show that at a large

Alexei, Koshelev

127

Acoustic attenuation due to transformation twins in CaCl2: Analogue behaviour for stishovite  

E-Print Network [OSTI]

Acoustic attenuation due to transformation twins in CaCl2: Analogue behaviour for stishovite: Pseudoproper ferroelastic phase transition Ferroelastic twin walls Stishovite CaCl2 Acoustic attenuation a b s t r a c t CaCl2 undergoes a tetragonal (P42/mnm) to orthorhombic (Pnnm) transition as a function

Cambridge, University of

128

Clinical Trial Closeout Checklist and Certification (Due 90 days after end of project)  

E-Print Network [OSTI]

personnel related expenses been charged to the project according to university policies and procedures? 3Clinical Trial Closeout Checklist and Certification (Due 90 days after end of project) Project No. Has an audit been performed on all medical services to insure that all study procedures have been

129

Field monitoring and modeling of pavement response and service life consumption due to overweight truck traffic  

E-Print Network [OSTI]

A number of pavement structures experience deterioration due to high traffic volume and growing weights. Recently, the Texas Legislatures passed bills allowing trucks of gross vehicle weight (GVW) up to 556 kN routinely to use a route in south Texas...

Oh, Jeong-Ho

2004-11-15T23:59:59.000Z

130

Permeability changes due to mineral diagenesis in fractured crust: implications for hydrothermal circulation at  

E-Print Network [OSTI]

The hydrothermal processes at ridge crests have been extensively studied during the last two decades. NeverthelessPermeability changes due to mineral diagenesis in fractured crust: implications for hydrothermal, the reasons why hydrothermal fields are only occasionally found along some ridge segments remain a matter

Manga, Michael

131

Estimation of uncertainties due to the wind-induced noise in a screened microphone  

E-Print Network [OSTI]

for experimental assessment of wind turbine noise. The contribution of the wind noise introduces a biasEstimation of uncertainties due to the wind-induced noise in a screened microphone D. Ecotiere by the wind at a screened microphone. This noise originates from turbulences that come from the direct

Paris-Sud XI, Université de

132

Changes in Soil Quality Due to Grazing and Oak Tree Removal in California Blue Oak  

E-Print Network [OSTI]

investigated (carbon, nitrogen, phosphorus, pH) within 5 to 15 years following tree removal. Following treeChanges in Soil Quality Due to Grazing and Oak Tree Removal in California Blue Oak Woodlands1 Trina of grazing and oak tree removal on soil quality and fertility were examined in a blue oak (Quercus douglasii

Standiford, Richard B.

133

Dances with waves Air-sea interaction The generation and growth of waves due to  

E-Print Network [OSTI]

Dances with waves Air-sea interaction · The generation and growth of waves due to wind blowing over to the sea causes the waves to grow until equilibrium is reached between input and dissipation of energy. The most obvious manifestation of wave energy dissipation is breaking waves, often visible as whitecaps

Haak, Hein

134

Formulating an Optimization Problem for Minimization of Losses due to Utilities  

E-Print Network [OSTI]

Formulating an Optimization Problem for Minimization of Losses due to Utilities Anna Lindholm.lindholm@control.lth.se). Abstract: Utilities, such as steam and cooling water, are often shared between several production areas at industrial sites, and the effects of disturbances in utilities could thus be hard to predict. In addition

Como, Giacomo

135

Prediction of Riser Carbon Macrosegregation due to Shrinkage Flow in Steel Casting  

E-Print Network [OSTI]

1 Prediction of Riser Carbon Macrosegregation due to Shrinkage Flow in Steel Casting Kent D of Iowa, Iowa City, IA 52242 Abstract A new simulation model is developed that predicts carbon predicted with a new advanced feeding flow model that predicts melt pressure, feeding flow and porosity

Beckermann, Christoph

136

Spatial variability of sea level rise due to water impoundment behind dams  

E-Print Network [OSTI]

Click Here for Full Article Spatial variability of sea level rise due to water impoundment behind global sea level by 30.0 mm and decreasing the rate of sea level rise. The load from impounded water change on sea level rise sources, which include thermal expansion of seawater and the melting of glaciers

Conrad, Clint

137

Coastal Inundation due to Tide, Surge, Waves, and Sea Level Rise at Naval Station Norfolk  

E-Print Network [OSTI]

Coastal Inundation due to Tide, Surge, Waves, and Sea Level Rise at Naval Station Norfolk Honghai of future sea level rise (SLR) scenarios and to evaluate the potential coastal inundation at Naval Station and sea level rise threats to coastal residents and coastal military facilities, the US Strategic

US Army Corps of Engineers

138

Submitting an NIH Application? Major changes for due dates on or after  

E-Print Network [OSTI]

Submitting an NIH Application? Major changes for due dates on or after January 25, 2010: For more information, visit Enhancing Peer Review: http://enhancing-peer-review.nih for Application Submissions on or After January 25, 2010 General Information about Submitting Grants to NIH: http://grants.nih

Bandettini, Peter A.

139

Sinking cities in Indonesia: ALOS PALSAR detects rapid subsidence due to groundwater and gas extraction  

E-Print Network [OSTI]

Sinking cities in Indonesia: ALOS PALSAR detects rapid subsidence due to groundwater and gas and Atmospheric Science, University of Miami, USA b Institute of Technology, Bandung (ITB), Indonesia c Korea online xxxx Keywords: Subsidence Interferometric synthetic aperture radar SBAS time-series Indonesia We

Amelung, Falk

140

Changes in the Mechanical and Biochemical Properties of Aortic Tissue due to Cold Storage  

E-Print Network [OSTI]

Changes in the Mechanical and Biochemical Properties of Aortic Tissue due to Cold Storage Ming Background. Temporary cold storage is a common procedure for preserving tissues for a short time be- fore; collagen; mechan- ical properties; arteries; cold storage; soft tissue; mechanical testing; vascular

Zhang, Katherine Yanhang

Note: This page contains sample records for the topic "unscheduled downtime due" 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

Abrupt climate shifts in Greenland due to displacements of the sea ice edge  

E-Print Network [OSTI]

that a reduction in sea ice extent in the North Atlantic produces a climatic response consistent with abruptAbrupt climate shifts in Greenland due to displacements of the sea ice edge Camille Li,1 David S ice could be changes in ocean thermohaline circulation (OTC) or rearrangements of the tropical

Schrag, Daniel

142

Observation of sound focusing and defocusing due to propagating nonlinear internal waves  

E-Print Network [OSTI]

Observation of sound focusing and defocusing due to propagating nonlinear internal waves J. Luo, M@coas.oregonstate.edu Abstract: Fluctuations of the low frequency sound field in the presence of an internal solitary wave packet image data were collected simultaneously before, during, and after a strong internal solitary wave

143

Direct radiative forcing due to aerosols in Asia during Soon-Ung Parka,, Jaein I. Jeongb  

E-Print Network [OSTI]

Direct radiative forcing due to aerosols in Asia during March 2002 Soon-Ung Parka,, Jaein I. Jeongb Model (CRM) of Community Climate Model 3 and the output of the fifth generation of meso-scale model (MM5 in the global climate system by changing atmospheric radiation balance (Tegen and Fung, 1994; Andreae, 1996; Li

Park, Rokjin

144

PUBLISHED VERSION Extracted H ion current enhancement due to caesium seeding at different plasma grid  

E-Print Network [OSTI]

grid bias Marthe Bacal, Roy McAdams, and Elizabeth Surrey 2013 UNITED KINGDOM ATOMIC ENERGY AUTHORITY to caesium seeding at different plasma grid biasa) Marthe Bacal, Roy McAdams, and Elizabeth Surrey Citation current enhancement due to caesium seeding at different plasma grid biasa) Marthe Bacal,1,b) Roy McAdams,2

145

Seismic hazard due to small-magnitude, shallow-source, induced earthquakes in The Netherlands  

E-Print Network [OSTI]

Seismic hazard due to small-magnitude, shallow-source, induced earthquakes in The Netherlands Torild van Eck*, Femke Goutbeek, Hein Haak, Bernard Dost Seismology Division, Royal Netherlands Meteorological Institute (KNMI) PO Box 201, 3730 AE De Bilt, The Netherlands. E-mail: vaneck@knmi.nl Revised

Haak, Hein

146

A review of the theory of Coriolis flowmeter measurement errors due to entrained particles  

E-Print Network [OSTI]

is provided in Table 1. The measurement errors due to compressibility increase with decreasing speed of sound,12]. Nomenclature: a fluid is either a liquid or a gas. A particle can be either a solid or a fluid (gas bubble or liquid droplet). To date, the published bubble theory has dealt with zero particle density combined

Basse, Nils Plesner

147

Transport of Energetic Ions due to Microturbulence, Sawteeth, and Alfven Eigenmodes  

E-Print Network [OSTI]

Transport of Energetic Ions due to Microturbulence, Sawteeth, and Alfven Eigenmodes D. C. Pace1 37831,USA 6 Princeton Plasma Physics Laboratory, PO Box 451, Princeton, New Jersey 08543-0451, USA 7. Utilizing an array of new diagnostics and simulation/modeling techniques, recent DIII-D experiments have

Lin, Zhihong

148

Detectability of Radio Frequency Interference due to Spread Spectrum Communication Signals using the  

E-Print Network [OSTI]

Detectability of Radio Frequency Interference due to Spread Spectrum Communication Signals using-- Analysis of detectability of the kurtosis algorithm for pulsed-sinusoidal Radio Frequency Interference (RFI) has already been performed in detail. The detectability for wide- band spread-spectrum RFI

Ruf, Christopher

149

Error analysis due to laser beams misalignment of a double laser self-mixing velocimeter  

SciTech Connect (OSTI)

In this paper, we present a self-mixing double-head laser diode velocimeter. Analyzes are performed to evaluate the sensitivity to misalignment for this setup and calculate errors due to this misalignment. The analyses and calculations are verified by experimental results.

Tanios, Bendy; Bony, Francis; Bosch, Thierry [CNRS, LAAS, 7 avenue du colonel Roche, F-31400 Toulouse (France) and Univ de Toulouse, UPS, LAAS, F-31400 Toulouse (France); CNRS, LAAS, 7 avenue du colonel Roche, F-31400 Toulouse, France and Univ de Toulouse, INP, LAAS, F-31400 Toulouse (France)

2012-06-13T23:59:59.000Z

150

2/8/2007 Holger Schlarb, DESY Limitation due to new  

E-Print Network [OSTI]

2/8/2007 Holger Schlarb, DESY Limitation due to new chicane BPM in BC3 Holger Schlarb, Kirsten #12;2/8/2007 Holger Schlarb, DESY BC3 currently Old Button BPM Vacuum Chamber For pumping Spare chamber #12;2/8/2007 Holger Schlarb, DESY BPM layout · bunch compressor BC3 between D2 & D3 Beam BC3

151

Cellulose nanowhiskers (CNW) have attracted much attention over the past several years due to their  

E-Print Network [OSTI]

Cellulose nanowhiskers (CNW) have attracted much attention over the past several years due- hydroxybutyrate-hydroxyvalerate). Cellulose nanowhiskers were prepared from microcrystilline cellulose (MCC) using and spun into fibers using a spinneret of diameter 370 m and an ethanol coagulation bath. The fibers were

Collins, Gary S.

152

Philosophy 101 --Five Extra-Credit Problems 04/28/11 (due 5/12/11)  

E-Print Network [OSTI]

Philosophy 101 -- Five Extra-Credit Problems 04/28/11 (due 5/12/11) Here are ve passages of these) is (roughly) equal to one homework assignment. [Note: the last two of these extra-credit problems President Bush (senior) condemn abortion except in those instances when pregnancies have resulted from rape

Fitelson, Branden

153

Stability of vertical films of molten glass due to evaporation F. Pigeonneau,a  

E-Print Network [OSTI]

and the momentum conservations is numerically solved by an implicit time solver using a finite difference method. Consequently, if a large part of the bath surface is covered with foam, heat transfer, mainly radiative due can be a nuisance. Most of glass furnaces are heated by a combustion chamber above the glass bath

Boyer, Edmond

154

Influence of Location, Population, and Climate on Building Damage and Fatalities due to Australian Bushfire: 19252009  

E-Print Network [OSTI]

Influence of Location, Population, and Climate on Building Damage and Fatalities due to Australian) in Australia since 1925 in light of the 2009 Black Saturday fires in Victoria in which 173 people lost recent reminder of the potential for natural hazards to impact Australian communities (Crompton and Mc

Colorado at Boulder, University of

155

American Journal of Science UTURUNCU VOLCANO, BOLIVIA: VOLCANIC UNREST DUE TO  

E-Print Network [OSTI]

American Journal of Science JUNE 2008 UTURUNCU VOLCANO, BOLIVIA: VOLCANIC UNREST DUE TO MID. Uturuncu volcano, SW Bolivia, is a dormant stratovolcano ( 85 km3 ) dominated by dacitic lava domes Empresa Minera Unificada S.A., La Paz, Bolivia; Mayelsuco@hotmail.com Institute of Geophysics, University

Pritchard, Matthew

156

Improvement of the QoS via an Adaptive and Dynamic Distribution of Applications in a Mobile Environment  

E-Print Network [OSTI]

Environment Anne-Marie Kerrnarrec Microsoft Research Ltd. St George house I, Guildhall Street Cambridge CB2 3,or screenreso- lution variations can also be the result of a low-power strategydue to the battery life limit of user's voluntary decision or may be due to a long downtime of the PIA for battery lifetime reasonor hos

El-Ansary, Sameh

157

Induction Motor Fault Diagnosis Using a Hilbert-Park Lissajou's Curve Analysis and Neural Network-Based Decision  

E-Print Network [OSTI]

and condition-based maintenance to be arranged for the electrical machines during scheduled downtimes of inherent failures are due to the mechanical or electrical forces acting in the machine enclosure propose an original fault signature based on the Hilbert-Park Lissajou's curve analysis. The performances

Paris-Sud XI, Université de

158

Conical flow due to partonic jets in central Au+Au collisions  

E-Print Network [OSTI]

In jet quenching, a hard QCD parton, before fragmenting into a jet of hadrons, deposits a fraction of its energy in the medium, leading to suppressed production of high-$p_T$ hadrons. The process can generate shock waves. We study the distortion of Mach shock waves due to jet quenching in central Au+Au collisions and its effect on particle production. Finite fluid velocity and inhomogeneity of the medium can distort the Mach shock front significantly such that the inside shock front disappear and the outside shock front is opened up. We also show that the STAR data on azimuthal distribution of background subtracted secondaries, associated with high $p_T$ trigger, are reasonably well explained by the excess pions produced due to partonic energy loss.

A. K. Chaudhuri

2006-11-06T23:59:59.000Z

159

Calculation of the reactivity feedback due to core-assembly bowing in LMFBRs  

SciTech Connect (OSTI)

The nonuniformity of the temperature distribution in an LMFBR leads to differential thermal expansion of the walls of an assembly hexcan. These thermal expansion differentials cause the hexcan to distort or bow. Consequentially, the assembly experiences a spatial displacement, which results in a change in reactivity for the core. A computational model to calculate the reactivity feedback due to material displacements induced by assembly bowing effects has been developed.

Not Available

1983-01-01T23:59:59.000Z

160

MAT 149A University of California Winter 2006 due Wednesday March 1 in class  

E-Print Network [OSTI]

MAT 149A University of California Winter 2006 Homework 7 due Wednesday March 1 in class 1. Biggs 21 orbit if G then |Gu| = |Gv|. 2. Biggs 21.2 # 6 page 285 Let X = Z5 and suppose that G is the cyclic the elements of G in cycle notation and determine the orbits of G on X. 3. Biggs 21.3 # 2 page 287 Let X denote

Schilling, Anne

Note: This page contains sample records for the topic "unscheduled downtime due" 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
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161

MAT 149A University of California Winter 2006 due Wednesday February 8 in class  

E-Print Network [OSTI]

MAT 149A University of California Winter 2006 Homework 4 due Wednesday February 8 in class 1. Biggs the group table (as we did for the symmetries of the equilateral triangle). 2. Biggs 20.3 # 3 page 264. Biggs 20.3 # 5 page 265 Show that the following latin square of order 5 is not a group table. 1 a b c d

Schilling, Anne

162

MAT 149A University of California Winter 2006 due Wednesday March 1 in class  

E-Print Network [OSTI]

MAT 149A University of California Winter 2006 Homework 7 due Wednesday March 1 in class 1. Biggs 21 in the same orbit if G then |G u | = |G v |. 2. Biggs 21.2 # 6 page 285 Let X = Z 5 and suppose that G down the elements of G in cycle notation and determine the orbits of G on X. 3. Biggs 21.3 # 2 page 287

Schilling, Anne

163

Forces due to waves in the presence of currents on a submerged model structure  

E-Print Network [OSTI]

OF SCIENCE December 1985 Major Subject: Ocean Engineering FORCES DUE TO WAVES IN THE PRESENCE OF CURRENTS ON A SUBMERGED MODEL STRUCTURE A Thesis by DAVID RAY SHIELDS Approved as to style and content by: Jo n . Her &c (Chairman of Committee) K... Engineering Program of the Civil Engineering Department for the use of its wave tank and instrumentation to perform this research. A much needed 8-channel recorder was provided through the courtesy of the Mechanical Engineering Department. A Texas A...

Shields, David Ray

1985-01-01T23:59:59.000Z

164

Radio Profile Instability in the Millisecond Pulsar PSR J0437-4715 due to Spiky Emission  

E-Print Network [OSTI]

The instability in one of the components of the radio integrated profile (IP) of the millisecond pulsar PSr J0437-4715 is correlated with the occurrence of the spiky emission in that component. It is speculated that the instability in other components is also due to the spiky emission. This might have important implications for interpreting the individual components of the IP as independent beams or regions of emission.

M. Vivekanand

2002-05-13T23:59:59.000Z

165

Transverse Kick Analysis of SSR1 Due to Possible Geometrical Variations in Fabrication  

SciTech Connect (OSTI)

Due to fabrication tolerance, it is expected that some geometrical variations could happen to the SSR1 cavities of Project X, like small shifts in the transverse direction of the beam pipe or the spoke. It is necessary to evaluate the resultant transverse kick due to these geometrical variations, in order to make sure that they are within the limits of the correctors in the solenoids. In this paper, we report the transverse kick values for various fabrications errors and the sensitivity of the beam to these errors. Transverse kick that could happen in SSR1 cavities due to geometrical variations of the fabricated cavities from the designed geometry has been analysed and evaluated. From fabrication experience, three kinds of variations were under investigation concerning the alignment of both the beam pipe and spoke with respect to the beam axis. Simulation study has been carried out implementing these variations in the simulation model. CMM measurements of five fabricated SSR1 cavities were carried out to investigate the amount of physical misalignments of the beam pipe and spoke. Bead-pull measurements were also conducted to evaluate the transverse kick values in the fabricated cavities. Simulation and measurements are relatively in good agreement. Maximum kick in the fabricated cavities is within 154 keV that would induce about 1.12 mrad beam deviation, which could be definitely corrected with the 10 mrad specified correctors of Project X.

Yakovlev, V.P.; /Fermilab; Awida, M.H.; Berrutti, P.; Gonin, I.V.; Khabiboulline, T.N.; /Fermilab

2012-05-01T23:59:59.000Z

166

Variation in the aerodynamic drag coefficient due to changes in the shape of an automobile  

E-Print Network [OSTI]

VARIATION IN THE AERODXMMIC DRAG COEEEICIENT DUE TO CHANGES LN THE SHAPE OF AN AUTOMOBILE A Thesis by JOHN GILBERT MILLI%MS Su'bmitned to the Graduate College of the Texas A&M University in partial fulfillment of the requirements fo... Air Density C HAFTER I IliiTRODUCTION During the early years of the automobile, little or no effort was made to explore the problem of aerodynamic drag. This situation was the result oi' two factors. First, the passenger cars of shat time were...

Williams, John Gilbert

1968-01-01T23:59:59.000Z

167

Effective gamma-ray doses due to natural radiation from soils of southeastern Brazil  

SciTech Connect (OSTI)

We have used gamma-ray spectrometry to study the distribution of natural radiation from soils of southeastern Brazil: Billings reservoir, Sao Bernardo do Campo Parks, Diadema Parks, Interlagos region, Sao Paulo, and soil from Sao Paulo and Rio de Janeiro beaches. In most of the regions studied we have found that the dose due the external exposure to gamma-rays, proceeding from natural terrestrial elements, are between the values 0.3 and 0.6 mSv/year, established by the United Nations Scientific Committee on the Effects of Atomic Radiation.

Silveira, M. A. G.; Moreira, R. H.; Bellini, B. S. [Centro Universitario da FEI, Sao Bernardo do Campo, Sao Paulo (Brazil); Medina, N. H.; Aguiar, V. A. P. [Instituto de Fisica da Universidade de Sao Paulo, Sao Paulo (Brazil)

2010-08-04T23:59:59.000Z

168

Optical bistability at low light level due to collective atomic recoil  

E-Print Network [OSTI]

We demonstrate optical nonlinearities due to the interaction of weak optical fields with the collective motion of a strongly dispersive ultracold gas. The combination of a recoil-induced resonance (RIR) in the high gain regime and optical waveguiding within the dispersive medium enables us to achieve a collective atomic cooperativity of $275 \\pm 50$ even in the absence of a cavity. As a result, we observe optical bistability at input powers as low as 20 pW. The present scheme allows for dynamic optical control of the dispersive properties of the ultracold gas using very weak pulses of light. The experimental observations are in good agreement with a theoretical model.

M. Vengalattore; M. Hafezi; M. D. Lukin; M. Prentiss

2008-04-15T23:59:59.000Z

169

Assessment of damage to the desert surfaces of Kuwait due to the Gulf War  

SciTech Connect (OSTI)

This is a preliminary report on a joint research project by Boston University and the Kuwait Institute for Scientific Research that commenced in April 1992. The project aim is to establish the extent and nature of environmental damage to the desert surface and coastal zone of Kuwait due to the Gulf War and its aftermath. Change detection image enhancement techniques were employed to enhance environmental change by comparison of Landsat Thematic Mapper images obtained before the wars and after the cessation of the oil and well fires. Higher resolution SPOT images were also utilized to evaluate the nature of the environmental damage to specific areas. The most prominent changes were due to: (1) the deposition of oil and course-grained soot on the desert surface as a result of oil rain'' from the plume that emanated from the oil well fires; (2) the formation of hundreds of oil lakes, from oil seepage at the damaged oil well heads; (3) the mobilization of sand and dust and (4) the pollution of segments of the coastal zone by the deposition of oil from several oil spills. Interpretation of satellite image data are checked in the field to confirm the observations, and to assess the nature of the damage. Final results will be utilized in establishing the needs for remedial action to counteract the harmful effects of the various types of damage to the environment of Kuwait.

El-Baz, F. (Boston Univ., MA (United States). Center for Remote Sensing); Al-Ajmi, D. (Kuwait Inst. for Scientific Research (Kuwait). Environmental and Earth Sciences Div.)

1993-01-01T23:59:59.000Z

170

Degradation and healing in a generalized neo-Hookean solid due to infusion of a fluid  

E-Print Network [OSTI]

The mechanical response and load bearing capacity of high performance polymer composites changes due to diffusion of a fluid, temperature, oxidation or the extent of the deformation. Hence, there is a need to study the response of bodies under such degradation mechanisms. In this paper, we study the effect of degradation and healing due to the diffusion of a fluid on the response of a solid which prior to the diffusion can be described by the generalized neo-Hookean model. We show that a generalized neo-Hookean solid - which behaves like an elastic body (i.e., it does not produce entropy) within a purely mechanical context - creeps and stress relaxes when infused with a fluid and behaves like a body whose material properties are time dependent. We specifically investigate the torsion of a generalized neo-Hookean circular cylindrical annulus infused with a fluid. The equations of equilibrium for a generalized neo-Hookean solid are solved together with the convection-diffusion equation for the fluid concentrati...

Karra, Satish

2010-01-01T23:59:59.000Z

171

Degradation and healing in a generalized neo-Hookean solid due to infusion of a fluid  

E-Print Network [OSTI]

The mechanical response and load bearing capacity of high performance polymer composites changes due to diffusion of a fluid, temperature, oxidation or the extent of the deformation. Hence, there is a need to study the response of bodies under such degradation mechanisms. In this paper, we study the effect of degradation and healing due to the diffusion of a fluid on the response of a solid which prior to the diffusion can be described by the generalized neo-Hookean model. We show that a generalized neo-Hookean solid - which behaves like an elastic body (i.e., it does not produce entropy) within a purely mechanical context - creeps and stress relaxes when infused with a fluid and behaves like a body whose material properties are time dependent. We specifically investigate the torsion of a generalized neo-Hookean circular cylindrical annulus infused with a fluid. The equations of equilibrium for a generalized neo-Hookean solid are solved together with the convection-diffusion equation for the fluid concentration. Different boundary conditions for the fluid concentration are also considered. We also solve the problem for the case when the diffusivity of the fluid depends on the deformation of the generalized neo-Hookean solid.

Satish Karra; K. R. Rajagopal

2010-07-21T23:59:59.000Z

172

Roles of cavitation/column separation due to earthquake-induced hydraulic transients  

SciTech Connect (OSTI)

The roles of cavitation/column separation due to earthquake-induced hydraulic transients in pipe flow were investigated experimentally and theoretically. It is known that when the system pressure during a hydraulic transient reaches the saturation pressure of the liquid, cavitation/column separation occurs. When the cavities collapse or when the separated liquid columns rejoin, very high pressures are produced. The experiment employed a pipe mounted between a constant-pressure tank and a piston-type excitation device. The resulting pressure variation at the piston was recorded continually. Comparison of pressure response for various test runs indicated that the peak pressures at/near resonance frequency were not affected significantly by the excitation velocity amplitude in cases of cavitation/column separation. These results were confirmed by comparison with theoretical analysis. A numerical method to simulate column separation/cavitation was developed. In order to eliminate numerical oscillation, the flux-correction method was introduced. Results obtained suggest that the cavitation/column separation due to earthquake-induced hydraulic transients is an important damage mechanism.

Hwang, Y.D.

1986-01-01T23:59:59.000Z

173

Wakefield and RF Kicks Due to Coupler Asymmetry in TESLA-Type Accelerating Cavities  

SciTech Connect (OSTI)

In a future linear collider, such as the International Linear Collider (ILC), trains of high current, low emittance bunches will be accelerated in a linac before colliding at the interaction point. Asymmetries in the accelerating cavities of the linac will generate fields that will kick the beam transversely and degrade the beam emittance and thus the collider performance. In the main linac of the ILC, which is filled with TESLA-type superconducting cavities, it is the fundamental (FM) and higher mode (HM) couplers that are asymmetric and thus the source of such kicks. The kicks are of two types: one, due to (the asymmetry in) the fundamental RF fields and the other, due to transverse wakefields that are generated by the beam even when it is on axis. In this report we calculate the strength of these kicks and estimate their effect on the ILC beam. The TESLA cavity comprises nine cells, one HM coupler in the upstream end, and one (identical, though rotated) HM coupler and one FM coupler in the downstream end (for their shapes and location see Figs. 1, 2) [1]. The cavity is 1.1 m long, the iris radius 35 mm, and the coupler beam pipe radius 39 mm. Note that the couplers reach closer to the axis than the irises, down to a distance of 30 mm.

Bane, K.L.F.; Adolphsen, C.; Li, Z.; /SLAC; Dohlus, M.; Zagorodnov, I.; /DESY; Gonin, I.; Lunin, A.; Solyak, N.; Yakovlev, V.; /Fermilab; Gjonaj, E.; Weiland, T.; /Darmstadt, Tech. Hochsch.

2008-07-07T23:59:59.000Z

174

Continuum-kinetic-microscopic model of lung clearance due to core-annular fluid entrainment  

SciTech Connect (OSTI)

The human lung is protected against aspirated infectious and toxic agents by a thin liquid layer lining the interior of the airways. This airway surface liquid is a bilayer composed of a viscoelastic mucus layer supported by a fluid film known as the periciliary liquid. The viscoelastic behavior of the mucus layer is principally due to long-chain polymers known as mucins. The airway surface liquid is cleared from the lung by ciliary transport, surface tension gradients, and airflow shear forces. This work presents a multiscale model of the effect of airflow shear forces, as exerted by tidal breathing and cough, upon clearance. The composition of the mucus layer is complex and variable in time. To avoid the restrictions imposed by adopting a viscoelastic flow model of limited validity, a multiscale computational model is introduced in which the continuum-level properties of the airway surface liquid are determined by microscopic simulation of long-chain polymers. A bridge between microscopic and continuum levels is constructed through a kinetic-level probability density function describing polymer chain configurations. The overall multiscale framework is especially suited to biological problems due to the flexibility afforded in specifying microscopic constituents, and examining the effects of various constituents upon overall mucus transport at the continuum scale.

Mitran, Sorin, E-mail: mitran@unc.edu

2013-07-01T23:59:59.000Z

175

Transient Eddy Current Response Due to a Subsurface Crack in a Conductive Plate  

SciTech Connect (OSTI)

Eddy current nondestructive evaluation (NDE) is usually carried out by exciting a time harmonic field using an inductive probe. However, a viable alternative is to use transient eddy current NDE in which a current pulse in a driver coil produces a transient .eld in a conductor that decays at a rate dependent on the conductivity and the permeability of the material and the coil configuration. By using transient eddy current, it is possible to estimate the properties of the conductive medium and to locate and size potential .aws from the measured probe response. The fundamental study described in this dissertation seeks to establish a theoretical understanding of the transient eddy current NDE. Compared with the Fourier transform method, the derived analytical formulations are more convenient when the transient eddy current response within a narrow time range is evaluated. The theoretical analysis provides a valuable tool to study the effect of layer thickness, location of defect, crack opening as well as the optimization of probe design. Analytical expressions have been developed to evaluate the transient response due to eddy currents in a conductive plate based on two asymptotic series. One series converges rapidly for a short time regime and the other for a long time regime and both of them agree with the results calculated by fast Fourier transform over all the times considered. The idea of asymptotic expansion is further applied to determine the induced electromotive force (EMF) in a pick-up coil due to eddy currents in a cylindrical rod. Starting from frequency domain representation, a quasi-static time domain dyadic Green's function for an electric source in a conductive plate has been derived. The resulting expression has three parts; a free space term, multiple image terms and partial reflection terms. The dyadic Green's function serves as the kernel of an electric field integral equation which defines the interaction of an ideal crack with the transient eddy currents in a conductive plate. The crack response is found using the reciprocity theorem. Good agreement is observed between the predictions of the magnetic field due to the crack and experimental measurements.

Fangwei Fu

2006-08-09T23:59:59.000Z

176

Failure of man-made cavities in salt and surface subsidence due to sulfur mining  

SciTech Connect (OSTI)

An engineering data base relevant to subsidence due to sulfur mining and to structural failure of cavities in salt is established, evaluated and documented. Nineteen failure events are discussed. Based on these documented failure events, capabilities of and inputs to a mathematical model of cavity failure are determined. Two failure events are adequately documented for use in model verification studies. A conclusion of this study that is pertinent to the Strategic Petroleum Reserve is that cavity failures in dome salt are fairly rare, but that as the number of large cavities (especially those having large roof spans) increases, failures will probably be more common unless stability and failure mechanisms of cavities are better understood.

Coates, G.K.; Lee, C.A.; McClain, W.C.; Senseny, P.E.

1981-01-01T23:59:59.000Z

177

Assessing Fatigue and Ultimate Load Uncertainty in Floating Offshore Wind Turbines Due to Varying Simulation Length  

SciTech Connect (OSTI)

With the push towards siting wind turbines farther offshore due to higher wind quality and less visibility, floating offshore wind turbines, which can be located in deep water, are becoming an economically attractive option. The International Electrotechnical Commission's (IEC) 61400-3 design standard covers fixed-bottom offshore wind turbines, but there are a number of new research questions that need to be answered to modify these standards so that they are applicable to floating wind turbines. One issue is the appropriate simulation length needed for floating turbines. This paper will discuss the results from a study assessing the impact of simulation length on the ultimate and fatigue loads of the structure, and will address uncertainties associated with changing the simulation length for the analyzed floating platform. Recommendations of required simulation length based on load uncertainty will be made and compared to current simulation length requirements.

Stewart, G.; Lackner, M.; Haid, L.; Matha, D.; Jonkman, J.; Robertson, A.

2013-07-01T23:59:59.000Z

178

Induced Optical Losses in Optoelectronic Devices due to Focused Ion Beam Damages  

E-Print Network [OSTI]

A study of damages caused by gallium focused ion beam (FIB) into III-V compounds is presented. Potential damages caused by local heating, ion implantation, and selective sputtering are presented. Preliminary analysis shows that local heating is negligible. Gallium implantation is shown to occur over areas tens of nanometers thick. Gallium accumulation as well as selective sputtering during III-V compounds milling is expected. Particularly, for GaAs, this effect leads to gallium segregation and formation of metallic clusters. Microdisk resonators were fabricated using FIB milling with different emission currents to analyze these effects on a device. It is shown that for higher emission current, thus higher implantation doses, the cavity quality factor rapidly decreases due to optical scattering losses induced by implanted gallium atoms.

Vallini, Felipe; Reis, Elohim Fonseca dos; von Zuben, Antnio Augusto; Frateschi, Newton Cesrio

2012-01-01T23:59:59.000Z

179

DERIVATIONS FOR HOOP STRESSES DUE TO SHOCK WAVES IN A TUBE  

SciTech Connect (OSTI)

Equations describing the hoop stresses in a pipe due to water hammer have been presented in the literature in a series of papers, and this paper discusses the complete derivation of the pertinent equation. The derivation considers the pipe wall response to a water hammer induced shock wave moving along the inner wall of the pipe. Factors such as fluid properties, pipe wall materials, pipe dimensions, and damping are considered. These factors are combined to present a single, albeit rather complicated, equation to describe the pipe wall vibrations and hoop stresses as a function of time. This equation is also compared to another theoretical prediction for hoop stresses, which is also derived herein. Specifically, the two theories predict different maximum stresses, and the differences between these predictions are graphically displayed.

Leishear, R

2007-04-30T23:59:59.000Z

180

Effects On Beam Alignment Due To Neutron-Irradiated CCD Images At The National Ignition Facility  

SciTech Connect (OSTI)

The 192 laser beams in the National Ignition Facility (NIF) are automatically aligned to the target-chamber center using images obtained through charged coupled device (CCD) cameras. Several of these cameras are in and around the target chamber during an experiment. Current experiments for the National Ignition Campaign are attempting to achieve nuclear fusion. Neutron yields from these high energy fusion shots expose the alignment cameras to neutron radiation. The present work explores modeling and predicting laser alignment performance degradation due to neutron radiation effects, and demonstrates techniques to mitigate performance degradation. Camera performance models have been created based on the measured camera noise from the cumulative single-shot fluence at the camera location. We have found that the effect of the neutron-generated noise for all shots to date have been well within the alignment tolerance of half a pixel, and image processing techniques can be utilized to reduce the effect even further on the beam alignment.

Awwal, A; Manuel, A; Datte, P; Burkhart, S

2011-02-28T23:59:59.000Z

Note: This page contains sample records for the topic "unscheduled downtime due" 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

CPT and lepton number violation in neutrino sector: Modified mass matrix and oscillation due to gravity  

E-Print Network [OSTI]

We study the consequences of CPT and lepton number violation in neutrino sector. For CPT violation we take gravity with which neutrino and antineutrino couple differently. Gravity mixes neutrino and antineutrino in an unequal ratio to give two mass eigenstates. Lepton number violation interaction together with CPT violation gives rise to neutrino-antineutrino oscillation. Subsequently, we study the neutrino flavor mixing and oscillation under the influence of gravity. It is found that gravity changes flavor oscillation significantly which influences the relative abundance of different flavors in present universe. We show that the neutrinoless double beta decay rate is modified due to presence of gravity- the origin of CPT violation, as the mass of the flavor state is modified.

Monika Sinha; Banibrata Mukhopadhyay

2007-11-21T23:59:59.000Z

182

Autonomous Motility of Active Filaments due to Spontaneous Flow-Symmetry Breaking  

E-Print Network [OSTI]

We simulate the nonlocal Stokesian hydrodynamics of an elastic filament which is active due a permanent distribution of stresslets along its contour. A bending instability of an initially straight filament spontaneously breaks flow symmetry and leads to autonomous filament motion which, depending on conformational symmetry, can be translational or rotational. At high ratios of activity to elasticity, the linear instability develops into nonlinear fluctuating states with large amplitude deformations. The dynamics of these states can be qualitatively understood as a superposition of translational and rotational motion associated with filament conformational modes of opposite symmetry. Our results can be tested in molecular-motor filament mixtures, synthetic chains of autocatalytic particles, or other linearly connected systems where chemical energy is converted to mechanical energy in a fluid environment.

Gayathri Jayaraman; Sanoop Ramachandran; Somdeb Ghose; Abhrajit Laskar; M. Saad Bhamla; P. B. Sunil Kumar; R. Adhikari

2012-10-10T23:59:59.000Z

183

Absorption Effects due to Spin in the Worldline Approach to Black Hole Dynamics  

E-Print Network [OSTI]

We generalize the effective point particle approach to black hole dynamics to include spin. In this approach dissipative effects are captured by degrees of freedom localized on the wordline. The absorptive properties of the black hole are determined by correlation functions which can be matched with the graviton absorption cross section in the long wavelength approximation. For rotating black holes, superradiance is responsible for the leading contribution. The effective theory is then used to predict the power loss due to spin in the dynamics of non-relativistic binary systems. An enhancement of three powers of the relative velocity is found with respect to the non-rotating case. Then we generalize the results to other type of constituents in the binary system, such as rotating neutron stars. Finally we compute the power loss absorbed by a test spinning black hole in a given spacetime background.

Rafael A. Porto

2007-10-26T23:59:59.000Z

184

Quantification of disturbance energy due to conductor motion and stability analysis of superconducting composite wire  

SciTech Connect (OSTI)

One of the most intricate disturbances causing quenches in high-current-density superconducting magnets is an abrupt conductor motion. There have been very few papers investigating the disturbance energy of the conductor motion and its generally understood that its quantification is very difficult. The authors have proposed a model to quantify the disturbance energy due to conductor motion. The model relates the disturbance energy to mechanical properties of a conductor, electromagnetic force and winding structure. In the paper, stability of a superconducting composite conductor subject to an abrupt conductor motion is analyzed based on the proposed model. It is pointed out that the stability of the conductor is improved by decreasing distance between spacers placed between the conductors. However, it is also pointed out that there is a limit to the improvement of the stability of decreasing the spacer distance, because of limited accuracies of the conductor and spacer dimensions.

Tsukamoto, O.; Takao, T.; Honjo, S.

1989-03-01T23:59:59.000Z

185

ANALYSIS OF HIGH FIELD NON-LINEAR LOSSES ON SRF SURFACES DUE TO SPECIFIC TOPOGRAPHIC ROUGHNESS  

SciTech Connect (OSTI)

The high-field performance of SRF cavities will eventually be limited by the realization of fundamental material limits, whether it is Hc1 or Hsh, or some derivative thereof, at which the superconductivity is lost. Before reaching this fundamental field limit at the macro level, it must be encountered at localized, perhaps microscopic, sites of field enhancement due to local topography. If such sites are small enough, they may produce thermally stabilized normal-conducting regions which contribute non-linear losses when viewed from the macro resonant field perspective, and thus produce degradation in Q0. We have undertaken a calculation of local surface magnetic field enhancement from specific fine topographic structure by conformal mapping method and numerically. A solution of the resulting normal conducting volume has been derived and the corresponding RF Ohmic loss simulated.

Chen Xu,Charles Reece,Michael Kelley

2012-07-01T23:59:59.000Z

186

Nonlinear Zeno dynamics due to atomic interactions in Bose-Einstein condensate  

E-Print Network [OSTI]

We show that nonlinear interactions induce both the Zeno and anti-Zeno effects in the generalised Bose-Josephson model (with the on-site interactions and the second-order tunneling) describing Bose-Einstein condensate in double-well trap subject to particle removal from one of the wells. We find that the on-site interactions induce \\textit{only} the Zeno effect, which appears at long evolution times, whereas the second-order tunneling leads to a strong decay of the atomic population at short evolution times, reminiscent of the anti-Zeno effect, and destroys the nonlinear Zeno effect due to the on-site interactions at long times.

V. G. Navarro; V. S. Shchesnovich

2014-09-03T23:59:59.000Z

187

Estimation of organ and effective dose due to Compton backscatter security scans  

SciTech Connect (OSTI)

Purpose: To estimate organ and effective radiation doses due to backscatter security scanners using Monte Carlo simulations and a voxelized phantom set. Methods: Voxelized phantoms of male and female adults and children were used with the GEANT4 toolkit to simulate a backscatter security scan. The backscatter system was modeled based on specifications available in the literature. The simulations modeled a 50 kVp spectrum with 1.0 mm-aluminum-equivalent filtration and a previously measured exposure of approximately 4.6 {mu}R at 30 cm from the source. Photons and secondary interactions were tracked from the source until they reached zero kinetic energy or exited from the simulation's boundaries. The energy deposited in the phantoms' respective organs was tallied and used to calculate total organ dose and total effective dose for frontal, rear, and full scans with subjects located 30 and 75 cm from the source. Results: For a full screen, all phantoms' total effective doses were below the established 0.25 {mu}Sv standard, with an estimated maximum total effective dose of 0.07 {mu}Sv for full screen of a male child. The estimated maximum organ dose due to a full screen was 1.03 {mu}Gy, deposited in the adipose tissue of the male child phantom when located 30 cm from the source. All organ dose estimates had a coefficient of variation of less than 3% for a frontal scan and less than 11% for a rear scan. Conclusions: Backscatter security scanners deposit dose in organs beyond the skin. The effective dose is below recommended standards set by the Health Physics Society (HPS) and the American National Standards Institute (ANSI) assuming the system provides a maximum exposure of approximately 4.6 {mu}R at 30 cm.

Hoppe, Michael E.; Schmidt, Taly Gilat [Department of Biomedical Engineering, Marquette University, P.O. Box 1881, Milwaukee, Wisconsin 53201 (United States)

2012-06-15T23:59:59.000Z

188

Stellite 6 Friction Changes Due to Aging and In-Service Testing  

SciTech Connect (OSTI)

For the past several years, researchers at the Idaho National Engineering and Environmental Laboratory, under the sponsorship of the U.S. Nuclear Regulatory Commission, have been investigating the ability of motor-operated valves to close or open when subjected to design basis flow and pressure loads. Part of this research addresses the friction that occurs at the interface between the valve disc and the valve body seats during operation of a gate valve. In most gate valves, these surfaces are hardfaced with Stellite 6, a cobalt-based alloy. The nuclear industry has developed methods to analytically predict the thrust needed to operate these valves at specific pressure conditions. To produce accurate valve thrust predictions; the analyst must have a reasonably accurate, though conservative, estimate of the coefficient of friction at the disc-to-seat interface. One of the questions that remains to be answered is whether, and to what extent, aging of the disc and seat surfaces affects the disc-to-seat coefficient of friction. Specifically, does the accumulation of a surface film due to aging of these surfaces increase the coefficient of friction and if so, how much? This paper presents results of specimen tests addressing this issue with emphasis on the following: The change in the friction coefficient of Stellite 6 as it ages and whether the friction reaches a plateau. The effect periodic gate valve cycling due to in-service testing has on the friction coefficient. The results of an independent review of the test methods, processes, and the results of the research to date. The status of ongoing aging and friction testing.

Watkins, John Clifford; DeWall, Kevin George

2001-07-01T23:59:59.000Z

189

Fatigue failure in thin-film polysilicon is due to subcriticalcracking within the oxide layer  

SciTech Connect (OSTI)

It has been established that microelectromechanical systems (MEMS) created from polycrystalline silicon thin-films are subject to cyclic fatigue. Prior work by the authors has suggested that although bulk silicon is not susceptible to fatigue failure in ambient air, fatigue in micron-scale silicon is a result of a ''reaction-layer'' process, whereby high stresses induce a thickening of the post-release oxide at stress concentrations such as notches, which subsequently undergoes moisture-assisted cracking. However, there exists some controversy regarding the post-release oxide thickness of the samples used in the prior study. In this Letter, we present data from devices from a more recent fabrication run that confirm our prior observations. Additionally, new data from tests in high vacuum show that these devices do not fatigue when oxidation and moisture are suppressed. Each of these observations lends credence to the '''reaction-layer'' mechanism. Recent advances in the design of microelectromechanical systems (MEMS) have increased the demand for more reliable microscale structures. Although silicon is an effective and widely used structural material at the microscale, it is very brittle. Consequently, reliability is a limiting factor for commercial and defense applications. Since the surface to volume ratio of these structural films is very large, classical models for failure modes in bulk materials cannot always be applied. For example, whereas bulk silicon is immune to cyclic fatigue failure thin micron-scale structural films of silicon appear to be highly susceptible. It is clear that at these size scales, surface effects may become dominant in controlling mechanical properties. The main reliability issues for MEMS are stiction, fatigue and wear. Fatigue is important in cases where devices are subjected to a large number of loading cycles with amplitudes below their (single-cycle) fracture stress, which may arise due to vibrations intentionally induced in the structure (i.e. a resonator) or those which arise from the service environment. While the reliability of MEMS has received extensive attention, the physical mechanisms responsible for these failure modes have yet to be conclusively determined. This is particularly true for fatigue, where the mechanisms have been subject to intense debate. Recently we have proposed that the fatigue of micron-scale polysilicon is associated with stress-induced surface oxide thickening and moisture-assisted subcritical cracking in the amorphous SiO{sub 2} oxide layer (''reaction-layer'' fatigue). The mechanism of oxide thickening is as yet unknown, but is likely related to some form of stress-assisted diffusion. Allameh et al. suggest a complementary mechanism involving stress-assisted oxide thickening, caused by dissolution of the surface oxide which forms deep grooves that are sites for crack initiation. Kahn et al. have criticized these mechanisms and proposed that, instead, fatigue is caused by subcritical cracking due to contacting surface asperities in the compressive part of the cycle. To the authors' knowledge, there is no direct experimental observation of such asperity contact. Also, their model cannot explain why micron-scale silicon, and not bulk silicon, is susceptible to fatigue. Moreover, Kahn et al. do not acknowledge the role of stress-induced oxide thickening, which has been observed directly using TEM and indirectly using atomic-force microscope measurements by several investigators, and have questioned whether the materials utilized by Muhlstein et al. and Allameh et al. were representative due to the relatively thick oxide scales. Accordingly, the goal of the present research is to seek a definitive understanding of the physical mechanisms responsible for fatigue in polysilicon structural thin-films. Our approach is to combine on-chip testing methods with electron microscopy by fatiguing thin-film samples and observing them, in an unthinned condition, using high-voltage transmission electron microscopy (HVTEM). Two principal results are found from this work: (1

Alsem, D.H.; Muhlstein, C.L.; Stach, E.A.; Ritchie, R.O.

2005-01-11T23:59:59.000Z

190

Corrosion Protection due to Bacteria /Metal Interactions E. Kus1, K. H. Nealson2 and F. Mansfeld1  

E-Print Network [OSTI]

Corrosion Protection due to Bacteria /Metal Interactions E. Kus1, K. H. Nealson2 and F. Mansfeld1 1. Corrosion and Environmental Effects Laboratory (CEEL) The Mork Family Department of Chemical Engineering Microbiologically influenced corrosion (MIC) refers to the increase of the corrosion rate of metals due to microbial

Southern California, University of

191

Abstract--The deployment of wireless technologies in industrial networks is very promising mainly due to their  

E-Print Network [OSTI]

-hop solutions, when combining frame forwarding with higher node density, have the potential to provide seamless modifications of production lines (due to the short life cycle of products) and high product channels in the industrial environment due to the interferences of industrial devices such as electric

Baldi, Mario

192

THz generation from InN films due to destructive interference between optical rectification and photocurrent surge  

E-Print Network [OSTI]

THz generation from InN films due to destructive interference between optical rectification.1088/0268-1242/25/1/015004 THz generation from InN films due to destructive interference between optical rectification investigated the characteristics of THz generation including the dependence of the output power

Gilchrist, James F.

193

Lithium enhancement in X-ray binaries due to stellar rotation  

E-Print Network [OSTI]

We discuss the high lithium abundances in the secondary stars of X-ray binaries. We show that no lithium production in these stars is necessary, and that the abundances can be explained simply due to the tidally locked rotation of the stars, which lead naturally to slower lithium destruction rates. The differences in abundances of CVs' secondaries from those of LMXBs had previously been put forth as evidence that the compact object was related to the lithium abundance, but this scenario also accounts for the lower lithium abundances in the secondary stars in cataclysmic variable systems (CVs) than in low mass X-ray binaries (LMXBs), since these stars have typically lived much longer before becoming tidally locked short period systems. We point out that if this scenario is correct, then the globular cluster X-ray binaries' donor stars should, as a class, show less lithium enhancement relative to other stars of the same spectral type in the clusters than the field X-ray binaries' donor stars show.

T. J. Maccarone; P. G. Jonker; A. I. Sills

2005-03-09T23:59:59.000Z

194

Discrimination of gamma rays due to inelastic neutron scattering in AGATA  

E-Print Network [OSTI]

Possibilities of discriminating neutrons and gamma rays in the AGATA gamma-ray tracking spectrometer have been investigated with the aim of reducing the background due to inelastic scattering of neutrons in the high-purity germanium crystals. This background may become a serious problem especially in experiments with neutron-rich radioactive ion beams. Simulations using the Geant4 toolkit and a tracking program based on the forward tracking algorithm were carried out by emitting neutrons and gamma rays from the center of AGATA. Three different methods were developed and tested in order to find 'fingerprints' of the neutron interaction points in the detectors. In a simulation with simultaneous emission of six neutrons with energies in the range 1-5 MeV and ten gamma rays with energies between 150 and 1450 keV, the peak-to-background ratio at a gamma-ray energy of 1.0 MeV was improved by a factor of 2.4 after neutron rejection with a reduction of the photopeak efficiency at 1.0 MeV of only a factor of 1.25.

A. Ata; A. Ka?ka?; S. Akkoyun; M. ?enyi?it; T. Hyk; S. O. Kara; J. Nyberg

2009-06-10T23:59:59.000Z

195

A Thoracic Mechanism of Mild Traumatic Brain Injury Due to Blast Pressure Waves  

E-Print Network [OSTI]

The mechanisms by which blast pressure waves cause mild to moderate traumatic brain injury (mTBI) are an open question. Possibilities include acceleration of the head, direct passage of the blast wave via the cranium, and propagation of the blast wave to the brain via a thoracic mechanism. The hypothesis that the blast pressure wave reaches the brain via a thoracic mechanism is considered in light of ballistic and blast pressure wave research. Ballistic pressure waves, caused by penetrating ballistic projectiles or ballistic impacts to body armor, can only reach the brain via an internal mechanism and have been shown to cause cerebral effects. Similar effects have been documented when a blast pressure wave has been applied to the whole body or focused on the thorax in animal models. While vagotomy reduces apnea and bradycardia due to ballistic or blast pressure waves, it does not eliminate neural damage in the brain, suggesting that the pressure wave directly affects the brain cells via a thoracic mechanism. ...

Courtney, Amy; 10.1016/j.mehy.2008.08.015

2008-01-01T23:59:59.000Z

196

Enhancement of fusion rates due to quantum effects in the particles momentum distribution in nonideal media  

E-Print Network [OSTI]

This study concerns a situation when measurements of the nonresonant cross-section of nuclear reactions appear highly dependent on the environment in which the particles interact. An appealing example discussed in the paper is the interaction of a deuteron beam with a target of deuterated metal Ta. In these experiments, the reaction cross section for d(d,p)t was shown to be orders of magnitude greater than what the conventional model predicts for the low-energy particles. In this paper we take into account the influence of quantum effects due to the Heisenberg uncertainty principle for particles in a non-ideal medium elastically interacting with the medium particles. In order to calculate the nuclear reaction rate in the non-ideal environment we apply both the Monte Carlo technique and approximate analytical calculation of the Feynman diagram using nonrelativistic kinetic Green's functions in the medium which correspond to the generalized energy and momentum distribution functions of interacting particles. We show a possibility to reduce the 12-fold integral corresponding to this diagram to a fivefold integral. This can significantly speed up the computation and control accuracy. Our calculations show that quantum effects significantly influence reaction rates such as p +7Be, 3He +4He, p +7Li, and 12C +12C. The new reaction rates may be much higher than the classical ones for the interior of the Sun and supernova stars. The possibility to observe the theoretical predictions under laboratory conditions is discussed.

N. J. Fisch; M. G. Gladush; Yu. V. Petrushevich; Piero Quarati; A. N. Starostin

2011-10-16T23:59:59.000Z

197

Enhancement of fusion rates due to quantum effects in the particles momentum distribution in nonideal media  

E-Print Network [OSTI]

This study concerns a situation when measurements of the nonresonant cross-section of nuclear reactions appear highly dependent on the environment in which the particles interact. An appealing example discussed in the paper is the interaction of a deuteron beam with a target of deuterated metal Ta. In these experiments, the reaction cross section for d(d,p)t was shown to be orders of magnitude greater than what the conventional model predicts for the low-energy particles. In this paper we take into account the influence of quantum effects due to the Heisenberg uncertainty principle for particles in a non-ideal medium elastically interacting with the medium particles. In order to calculate the nuclear reaction rate in the non-ideal environment we apply both the Monte Carlo technique and approximate analytical calculation of the Feynman diagram using nonrelativistic kinetic Green's functions in the medium which correspond to the generalized energy and momentum distribution functions of interacting particles. We...

Fisch, N J; Petrushevich, Yu V; Quarati, Piero; Starostin, A N

2011-01-01T23:59:59.000Z

198

HGSYSTEMUF6. Model for Simulating Dispersion due to Atmospheric Release of UF6  

SciTech Connect (OSTI)

HGSYSTEMUF6 is a suite of models designed for use in estimating consequences associated with accidental, atmospheric release of Uranium Hexafluoride (UF6) and its reaction products, namely Hydrogen Fluoride (HF), and other non-reactive contaminants which are either negatively, neutrally, or positively buoyant. It is based on HGSYSTEM Version 3.0 of Shell Research LTD., and contains specific algorithms for the treatment of UF6 chemistry and thermodynamics. HGSYSTEMUF6 contains algorithms for the treatment of dense gases, dry and wet deposition, effects due to the presence of buildings (canyon and wake), plume lift-off, and the effects of complex terrain. The models components of the suite include (1) AEROPLUME/RK, used to model near-field dispersion from pressurized two-phase jet releases of UF6 and its reaction products, (2) HEGADAS/UF6 for simulating dense, ground based release of UF6, (3) PGPLUME for simulation of passive, neutrally buoyant plumes (4) UF6Mixer for modeling warm, potentially reactive, ground-level releases of UF6 from buildings, and (5) WAKE, used to model elevated and ground-level releases into building wake cavities of non-reactive plumes that are either neutrally or positively buoyant.

Hanna, G [George Mason University, (United States); Chang, J.C. [Earthtech, Inc., (United States); Zhang, J.X. [BlazeTech Corporation, (United States); Bloom, S.G. [Lockheed Martin Energy Systems, Oak Ridge, TN (United States); Goode, W.D. Jr [Bechtel Jacobs Company, Oak Ridge, TN (United States); Lombardi, D.A. [JBF Associates, (United States); Yambert, M.W. [LMERC, Oak Ridge, TN (United States)

1998-08-01T23:59:59.000Z

199

Statistical properties of the convergence due to weak gravitational lensing by non-linear structures  

E-Print Network [OSTI]

Density fluctuations in the matter distribution lead to distortions of the images of distant galaxies through weak gravitational lensing effects. This provides an efficient probe of the cosmological parameters and of the density field. In this article, we investigate the statistical properties of the convergence due to weak gravitational lensing by non-linear structures (i.e. we consider small angular windows $\\theta \\la 1'$). Previous studies have shown how to relate the second and third order moments of the convergence to those of the density contrast while models based on the Press-Schechter prescription provide an estimate of the tail of $P(\\kappa)$. Here we present a method to obtain an estimate of the full p.d.f. of the convergence $P(\\kappa)$. It is based on a realistic description of the density field which applies to overdense as well as underdense regions. We show that our predictions agree very well with the results of N-body simulations for the convergence. This could allow one to derive the cosmological parameters $(\\Omega_m,\\Omega_{\\Lambda})$ as well as the full p.d.f. $P(\\delta_R)$ of the density contrast itself in the non-linear regime from observations. Hence this gives a very powerfull tool to constrain scenarios of structure formation.

P. Valageas

2000-05-12T23:59:59.000Z

200

Discrimination of gamma rays due to inelastic neutron scattering in AGATA  

E-Print Network [OSTI]

Possibilities of discriminating neutrons and ? rays in the AGATA ?-ray tracking spectrometer have been investigated with the aim of reducing the background due to inelastic scattering of neutrons in the high-purity germanium crystals. This background may become a serious problem especially in experiments with neutron-rich radioactive ion beams. Simulations using the Geant4 toolkit and a tracking program based on the forward tracking algorithm were carried out by emitting neutrons and ? rays from the center of AGATA. Three different methods were developed and tested in order to find fingerprints of the neutron interaction points in the detectors. In a simulation with simultaneous emission of six neutrons with energies in the range 1-5 MeV and ten ? rays with energies between 150 and 1450 keV, the peak-to-background ratio at a ?-ray energy of 1.0 MeV was improved by a factor of 2.4 after neutron rejection with a reduction of the photopeak efficiency at 1.0 MeV of only a factor of 1.25.

A. Ata; A. Kaskas A; S. Akkoyun A; M. Senyi?git A; T. Hyk A; S. O. Kara A; J. Nyberg B

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201

Observations of proton beam enhancement due to erbium hydride on gold foil targets  

SciTech Connect (OSTI)

Recent theoretical work suggests that the conversion efficiency from laser to protons in laser irradiated thin foil experiments increases if the atomic mass of nonhydrogen atoms on the foil rear surface increases. Experiments were performed at the Lawrence Livermore National Laboratory Jupiter Laser Facility to observe the effect of thin foils coated with erbium hydride on the conversion efficiency from laser to protons. Gold foils with and without the rear surface coated with ErH{sub 3} were irradiated using the ultrashort pulse, 40 TW Callisto laser. An argon-ion etching system was used to remove naturally occurring nanometer thick surface layer contaminants from the hydride. With the etcher, gold with ErH{sub 3} showed a 25% increase in the conversion efficiency to protons above 3.4 MeV relative to contaminants, where C{sup +4} and H{sup +} were the dominant ion species. No difference in the ion signal was observed without first cleaning the hydrides. Simulations using the hybrid PIC code, LSP, revealed that the increase due to erbium hydride versus contaminants is 37% for protons above 3 MeV.

Offermann, D. T.; Van Woerkom, L. D. [Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States); Freeman, R. R. [Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States); Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, California 92093 (United States); Department of Applied Science, University of California Davis, Livermore, California 94550 (United States); Foord, M. E.; Hey, D.; Key, M. H.; Mackinnon, A. J.; MacPhee, A. G.; Patel, P. K.; Ping, Y.; Sanchez, J. J.; Shen, N. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Bartal, T.; Beg, F. N. [Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, California 92093 (United States); Espada, L. [Sandia National Laboratory, Albuquerque, New Mexico 87185 (United States); Chen, C. D. [Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

2009-09-15T23:59:59.000Z

202

Runaway greenhouse effect on exomoons due to irradiation from hot, young giant planets  

E-Print Network [OSTI]

The Kepler space telescope has detected transits of objects as small as the Earth's Moon, and moons as small as 0.2 Earth masses can be detected in the Kepler data by transit timing and transit duration variations of their host planets. Such massive moons around giant planets in the stellar habitable zone (HZ) could serve as habitats for extraterrestrial life. We here assess the danger of exomoons to be in a runaway greenhouse (RG) state due to extensive heating from the planet. We apply pre-computed evolution tracks for giant planets to calculate the incident planetary radiation on the moon as a function of time. The total energy budget of stellar flux, illumination from the planet, and tidal heating in the satellite is compared to the critical flux for the moon to experience an RG effect. Irradiation from a 13-Jupiter-mass planet onto an Earth-sized moon at a distance of ten Jupiter radii can drive an RG state on the moon for about 200 Myr. If stellar illumination equivalent to that received by Earth from t...

Heller, Ren

2013-01-01T23:59:59.000Z

203

THE SIZE DIFFERENCE BETWEEN RED AND BLUE GLOBULAR CLUSTERS IS NOT DUE TO PROJECTION EFFECTS  

SciTech Connect (OSTI)

Metal-rich (red) globular clusters in massive galaxies are, on average, smaller than metal-poor (blue) globular clusters. One of the possible explanations for this phenomenon is that the two populations of clusters have different spatial distributions. We test this idea by comparing clusters observed in unusually deep, high signal-to-noise images of M87 with a simulated globular cluster population in which the red and blue clusters have different spatial distributions, matching the observations. We compare the overall distribution of cluster effective radii as well as the relationship between effective radius and galactocentric distance for both the observed and simulated red and blue sub-populations. We find that the different spatial distributions does not produce a significant size difference between the red and blue sub-populations as a whole or at a given galactocentric distance. These results suggest that the size difference between red and blue globular clusters is likely due to differences during formation or later evolution.

Webb, Jeremy J.; Harris, William E.; Sills, Alison, E-mail: webbjj@mcmaster.ca [Department of Physics and Astronomy, McMaster University, Hamilton ON L8S 4M1 (Canada)

2012-11-10T23:59:59.000Z

204

A weak acceleration effect due to residual gravity in a multiply connected universe  

E-Print Network [OSTI]

Could cosmic topology imply dark energy? We use a weak field (Newtonian) approximation of gravity and consider the gravitational effect from distant, multiple copies of a large, collapsed (virialised) object today (i.e. a massive galaxy cluster), taking into account the finite propagation speed of gravity, in a flat, multiply connected universe, and assume that due to a prior epoch of fast expansion (e.g. inflation), the gravitational effect of the distant copies is felt locally, from beyond the naively calculated horizon. We find that for a universe with a $T^1xR^2$ spatial section, the residual Newtonian gravitational force (to first order) provides an anisotropic effect that repels test particles from the cluster in the compact direction, in a way algebraically similar to that of dark energy. For a typical test object at comoving distance $\\chi$ from the nearest dense nodes of the cosmic web of density perturbations, the pressure-to-density ratio $w$ of the equation of state in an FLRW universe, is w \\sim - (\\chi/L)^3, where $L$ is the size of the fundamental domain, i.e. of the universe. Clearly, |w|dark energy, but the amplitude of the effect at the present epoch is too small to explain the observed dark energy density and its anisotropy makes it an unrealistic candidate for the observed dark energy.

Boudewijn F. Roukema; Stanislaw Bajtlik; Marek Biesiada; Agnieszka Szaniewska; Helena Jurkiewicz

2006-12-08T23:59:59.000Z

205

Physical property changes in hydrate-bearingsediment due to depressurization and subsequent repressurization  

SciTech Connect (OSTI)

Physical property measurements of sediment cores containing natural gas hydrate are typically performed on material exposed at least briefly to non-in situ conditions during recovery. To examine effects of a brief excursion from the gas-hydrate stability field, as can occur when pressure cores are transferred to pressurized storage vessels, we measured physical properties on laboratory-formed sand packs containing methane hydrate and methane pore gas. After depressurizing samples to atmospheric pressure, we repressurized them into the methane-hydrate stability field and remeasured their physical properties. Thermal conductivity, shear strength, acoustic compressional and shear wave amplitudes and speeds are compared between the original and depressurized/repressurized samples. X-ray computed tomography (CT) images track how the gas-hydrate distribution changes in the hydrate-cemented sands due to the depressurization/repressurization process. Because depressurization-induced property changes can be substantial and are not easily predicted, particularly in water-saturated, hydrate-bearing sediment, maintaining pressure and temperature conditions throughout the core recovery and measurement process is critical for using laboratory measurements to estimate in situ properties.

Kneafsey, Timothy; Waite, W.F.; Kneafsey, T.J.; Winters, W.J.; Mason, D.H.

2008-06-01T23:59:59.000Z

206

Underground Infrastructure Impacts Due to a Surface Burst Nuclear Device in an Urban Canyon Environment  

SciTech Connect (OSTI)

Investigation of the effects of a nuclear device exploded in a urban environment such as the Chicago studied for this particular report have shown the importance on the effects from the urban canyons so typical of today's urban environment as compared to nuclear test event effects observed at the Nevada Test Site (NTS) and the Pacific Testing Area on which many of the typical legacy empirical codes are based on. This report first looks at the some of the data from nuclear testing that can give an indication of the damage levels that might be experienced due to a nuclear event. While it is well known that a above ground blast, even a ground burst, very poorly transmits energy into the ground ( < 1%) and the experimental results discussed here are for fully coupled detonations, these results do indicate a useful measure of the damage that might be expected. The second part of the report looks at effects of layering of different materials that typically would make up the near ground below surface environment that a shock would propagate through. As these simulations support and is widely known in the community, the effects of different material compositions in these layers modify the shock behavior and especially modify the energy dispersal and coupling into the basement structures. The third part of the report looks at the modification of the underground shock effects from a surface burst 1 KT device due to the presence of basements under the Chicago buildings. Without direct knowledge of the basement structure, a simulated footprint of a uniform 20m depth was assumed underneath each of the NGI defined buildings in the above ground environment. In the above ground case, the underground basement structures channel the energy along the line of site streets keeping the shock levels from falling off as rapidly as has been observed in unobstructed detonations. These simulations indicate a falloff of factors of 2 per scaled length as compared to 10 for the unobstructed case. Again, as in the above ground case, the basements create significant shielding causing the shock profile to become more square and reducing the potential for damage diagonal to the line of sight streets. The results for a 1KT device is that the heavily damaged zone (complete destruction) will extend out to 50m from the detonation ({approx}100m for 10KT). The heavily to moderately damaged zone will extend out to 100m ({approx}200m for 10KT). Since the destruction will depend on geometric angle from the detonation and also the variability of response for various critical infrastructure, for planning purposes the area out to 100m from the detonation should be assumed to be non-operational. Specifically for subway tunnels, while not operational, they could be human passable for human egress in the moderately damaged area. The results of the simulations presented in this report indicate only the general underground infrastructure impact. Simulations done with the actual basement geometry would be an important improvement. Equally as important or even more so, knowing the actual underground material configurations and material composition would be critical information to refine the calculations. Coupling of the shock data into structural codes would help inform the emergency planning and first response communities on the impact to underground structures and the state of buildings after the detonation.

Bos, Randall J. [Los Alamos National Laboratory; Dey, Thomas N. [Los Alamos National Laboratory; Runnels, Scott R. [Los Alamos National Laboratory

2012-07-03T23:59:59.000Z

207

EFFECT ON 105KW NORTH WALL DUE TO ADDITION OF FILTRATION SYSTEM  

SciTech Connect (OSTI)

CHPRC D&D Projects is adding three filtration system on two 1-ft concrete pads adjacent to the north side of existing KW Basin building. This analysis is prepared to provide qualitative assessment based on the review of design information available for 105KW basin substructure. In the proposed heating, ventilation and air conditioning (HVAC) filtration pad designs a 2 ft gap will be maintained between the pads and the north end of the existing 1 05KW -Basin building. Filtration Skids No.2 and No.3 share one pad. It is conservative to evaluate the No.2 and No.3 skid pad for the wall assessment. Figure 1 shows the plan layout of the 105KW basin site and the location of the pads for the filtration system or HVAC skids. Figure 2 shows the cross-section elevation view of the pad. The concrete pad Drawing H-1-91482 directs the replacement of the existing 8-inch concrete pad with two new 1-ft think pads. The existing 8-inch pad is separated from the 105KW basin superstructure by an expansion joint of only half an inch. The concrete pad Drawing H-1-91482 shows the gap between the new proposed pads and the north wall and any overflow pits and sumps is 2-ft. Following analysis demonstrates that the newly added filtration units and their pads do not exceed the structural capacity of existing wall. The calculation shows that the total bending moment on the north wall due to newly added filtration units and pads including seismic load is 82.636 ft-kip/ft and is within the capacity of wall which is 139.0ft-kip/ft.

CHO CS

2010-03-08T23:59:59.000Z

208

IMPLICATIONS OF MASS AND ENERGY LOSS DUE TO CORONAL MASS EJECTIONS ON MAGNETICALLY ACTIVE STARS  

SciTech Connect (OSTI)

Analysis of a database of solar coronal mass ejections (CMEs) and associated flares over the period 1996-2007 finds well-behaved power-law relationships between the 1-8 A flare X-ray fluence and CME mass and kinetic energy. We extrapolate these relationships to lower and higher flare energies to estimate the mass and energy loss due to CMEs from stellar coronae, assuming that the observed X-ray emission of the latter is dominated by flares with a frequency as a function of energy dn/dE = kE {sup -{alpha}}. For solar-like stars at saturated levels of X-ray activity, the implied losses depend fairly weakly on the assumed value of {alpha} and are very large: M-dot {approx}5 Multiplication-Sign 10{sup -10} M{sub sun} yr{sup -1} and E-dot {approx}0.1 L{sub sun}. In order to avoid such large energy requirements, either the relationships between CME mass and speed and flare energy must flatten for X-ray fluence {approx}> 10{sup 31} erg, or the flare-CME association must drop significantly below 1 for more energetic events. If active coronae are dominated by flares, then the total coronal energy budget is likely to be up to an order of magnitude larger than the canonical 10{sup -3} L {sub bol} X-ray saturation threshold. This raises the question of what is the maximum energy a magnetic dynamo can extract from a star? For an energy budget of 1% of L {sub bol}, the CME mass loss rate is about 5 Multiplication-Sign 10{sup -11} M {sub Sun} yr{sup -1}.

Drake, Jeremy J.; Cohen, Ofer [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)] [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Yashiro, Seiji [Interferometrics Inc., Herndon, VA 20171 (United States)] [Interferometrics Inc., Herndon, VA 20171 (United States); Gopalswamy, Nat, E-mail: jdrake@cfa.harvard.edu [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)] [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2013-02-20T23:59:59.000Z

209

An Information-Theoretic Measure of Uncertainty due to Quantum and Thermal Fluctuations  

E-Print Network [OSTI]

We study an information-theoretic measure of uncertainty for quantum systems. It is the Shannon information $I$ of the phase space probability distribution $\\la z | \\rho | z \\ra $, where $|z \\ra $ are coherent states, and $\\rho$ is the density matrix. The uncertainty principle is expressed in this measure as $I \\ge 1$. For a harmonic oscillator in a thermal state, $I$ coincides with von Neumann entropy, $- \\Tr(\\rho \\ln \\rho)$, in the high-temperature regime, but unlike entropy, it is non-zero at zero temperature. It therefore supplies a non-trivial measure of uncertainty due to both quantum and thermal fluctuations. We study $I$ as a function of time for a class of non-equilibrium quantum systems consisting of a distinguished system coupled to a heat bath. We derive an evolution equation for $I$. For the harmonic oscillator, in the Fokker-Planck regime, we show that $I$ increases monotonically. For more general Hamiltonians, $I$ settles down to monotonic increase in the long run, but may suffer an initial decrease for certain initial states that undergo ``reassembly'' (the opposite of quantum spreading). Our main result is to prove, for linear systems, that $I$ at each moment of time has a lower bound $I_t^{min}$, over all possible initial states. This bound is a generalization of the uncertainty principle to include thermal fluctuations in non-equilibrium systems, and represents the least amount of uncertainty the system must suffer after evolution in the presence of an environment for time $t$.

Arlen Anderson; Jonathan J. Halliwell

1993-04-28T23:59:59.000Z

210

Wolf-Rayet Mass-Loss Limits Due to Frequency Redistribution  

E-Print Network [OSTI]

The hypothesis that CAK-type line driving is responsible for the large observed Wolf-Rayet (W-R) mass-loss rates has been called into question in recent theoretical studies. The purpose of this paper is to reconsider the plausibility of line driving of W-R winds within the standard approach using the Sobolev approximation while advancing the conceptual understanding of this topic. Due to the multiple scattering required in this context, of particular importance is the role of photon frequency redistribution into spectral gaps, which in the extreme limit yields the statistical Sobolev-Rosseland (SSR) mean approximation. Interesting limits to constrain are the extremes of no frequency redistribution, wherein the small radii and corresponding high W-R surface temperature induces up to twice the mass-loss rate relative to cooler stars, and the SSR limit, whereby the reduced efficiency of the driving drops the mass flux by as much as an order of magnitude whenever there exist significant gaps in the spectral line distribution. To see how this efficiency drop might be sufficiently avoided to permit high W-R mass loss, we explore the suggestion that ionization stratification may serve to fill the gaps globally over the wind. We find that global ionization changes can only fill the gaps sufficiently to cause about a 25% increase in the mass-loss rate over the local SSR limit. Higher temperatures and more ionization states (especially of iron) may be needed to achieve optically thick W-R winds, unless strong clumping corrections eliminate the need for such winds.

Andrew J. Onifer; Kenneth G. Gayley

2005-10-13T23:59:59.000Z

211

Introduction Due to the demand for efficiency in turbomachinery, the clearance between the casing and the blades  

E-Print Network [OSTI]

Introduction Due to the demand for efficiency in turbomachinery, the clearance between the casing of Turbomachinery Wear Simulations SURE 2011 Project by Grégoire Martin, supervised by Dr. Christophe Pierre and Dr

Barthelat, Francois

212

Application Form Removal of Financial Liability due to Special Circumstances V9-12 OFFICE USE ONLY: REF#  

E-Print Network [OSTI]

Liability Due to Special Circumstances Procedures at: http://ppl.app.uq.edu.au/content/3.50.10-removal for withdrawal without academic penalty refer to: http://ppl.app.uq.edu.au/content/3.50.02-academic

Blows, Mark

213

Evidence for photoacclimation by the diatom Chaetoceros muelleri due to fluctuating light Oregon State University REU 2007  

E-Print Network [OSTI]

of marine microalgae is important due to their significant contributions to the global environment.Introduction #12;Prier 2 Microalgae are commonly defined as aquatic photoautotrophic microbes resources (irradiance) to convert light into chemical energy through the process of photosynthesis

Kurapov, Alexander

214

Analysis of linear elasticity and non-linearity due to plasticity and material damage in woven and biaxial braided composites  

E-Print Network [OSTI]

Textile composites have a wide variety of applications in the aerospace, sports, automobile, marine and medical industries. Due to the availability of a variety of textile architectures and numerous parameters associated with each, optimal design...

Goyal, Deepak

2009-05-15T23:59:59.000Z

215

Changes in Tropical Rainfall Measuring Mission (TRMM) retrievals due to the orbit boost estimated from rain gauge data  

E-Print Network [OSTI]

in precipitation retrievals from the satellite data alone. We estimate changes in TRMM Microwave Imager (TMI) and the Precipitation Radar (PR) precipitation retrievals due to the orbit boost by comparing them with surface rain gauges on ocean buoys operated...

DeMoss, Jeremy

2009-06-02T23:59:59.000Z

216

Abstract--Electrical Distribution Systems (EDS) are facing ever-increasing complexity due to fast growing demand and large  

E-Print Network [OSTI]

to improve the reliability and quality of electrical distribution system. Index Terms- OPC technology, ICT1 Abstract-- Electrical Distribution Systems (EDS) are facing ever-increasing complexity due systems and Local Agent , Distribution Network, IEDs, Maltab OPC Toolbox, Distributed Generators

Paris-Sud XI, Universit de

217

Fatigue failure in thin-film polycrystalline silicon is due to subcritical cracking within the oxide layer  

E-Print Network [OSTI]

Fatigue failure in thin-film polycrystalline silicon is due to subcritical cracking within with stress-induced surface oxide thicken- ing and moisture-assisted subcritical cracking in the amor- phous

Ritchie, Robert

218

Comment on"Air Emissions Due to Wind and Solar Power" and Supporting Information  

SciTech Connect (OSTI)

Katzenstein and Apt investigate the important question of pollution emission reduction benefits from variable generation resources such as wind and solar. Their methodology, which couples an individual variable generator to a dedicated gas plant to produce a flat block of power is, however, inappropriate. For CO{sub 2}, the authors conclude that variable generators 'achieve {approx} 80% of the emission reductions expected if the power fluctuations caused no additional emissions.' They find even lower NO{sub x} emission reduction benefits with steam-injected gas turbines and a 2-4 times net increase in NO{sub x} emissions for systems with dry NO{sub x} control unless the ratio of energy from natural gas to variable plants is greater than 2:1. A more appropriate methodology, however, would find a significantly lower degradation of the emissions benefit than suggested by Katzenstein and Apt. As has been known for many years, models of large power system operations must take into account variable demand and the unit commitment and economic dispatch functions that are practiced every day by system operators. It is also well-known that every change in wind or solar power output does not need to be countered by an equal and opposite change in a dispatchable resource. The authors recognize that several of their assumptions to the contrary are incorrect and that their estimates therefore provide at best an upper bound to the emissions degradation caused by fluctuating output. Yet they still present the strong conclusion: 'Carbon dioxide emissions reductions are likely to be 75-80% of those presently assumed by policy makers. We have shown that the conventional method used to calculate emissions is inaccurate, particularly for NO{sub x} emissions.' The inherently problematic methodology used by the authors makes such strong conclusions suspect. Specifically, assuming that each variable plant requires a dedicated natural gas backup plant to create a flat block of power ignores the benefits of diversity. In real power systems, operators are required to balance only the net variations of all loads and all generators, not the output of individual loads or generators; doing otherwise would ensure an enormous amount of unnecessary investment and operating costs. As a result, detailed studies that aggregate the variability of all loads and generators to the system level find that the amount of operating reserves required to reliably integrate variable resources into the grid are on the order of 10% of the nameplate capacity of the variable generators, even when upto25%of gross demand is being met by variable generation. The authors implicit assumption that incremental operating reserves must be 100% of the nameplate capacity of the variable generation, and be available at all times to directly counter that variability, excludes the option of decommitting conventional units when the load net of variable generation is low. In real power systems, generation response to wind variation can typically be met by a combination of committed units, each operating at a relatively efficient point of their fuel curves. In the Supporting Information, we conceptually demonstrate that the CO{sub 2} and NO{sub x} efficiency penalty found by the authors can be significantly reduced by considering the unit commitment decision with just five plants. Real systems often have tens to hundreds of plants that can be committed and decommitted over various time frames. Ignoring the flexibility of the unit commitment decision therefore leads to unsupportable results. Anumber of analyses of the fuel savings and CO{sub 2} emission benefits of variable generation have considered realistic operating reserve requirements and unit commitment decisions in models that include the reduction in part load efficiency of conventional plants. The efficiency penalty due to the variability of wind in four studies considered by Gross et al. is negligible to 7%, for up to a 20% wind penetration level. In short, for moderate wind penetration levels, 'there is no evidence available to

Mills, Andrew D.; Wiser, Ryan H.; Milligan, Michael; O'Malley, Mark

2009-03-18T23:59:59.000Z

219

Multi-GeV neutrinos due to neutro anti-neutron oscillation in Gamma-Ray Burst Fireballs  

E-Print Network [OSTI]

The long and short gamma-ray bursts are believed to be produced due to collapse of massive stars and merger of compact binaries respectively. All these objects are rich in neutron and the jet outflow from these objects must have a neutron component in it. By postulating the neutron anti-neutron oscillation in the gamma-ray burst fireball, we show that, 19-38 GeV neutrinos and anti-neutrinos can be produced due to annihilation of anti-neutrons with the background neutrons. These neutrinos and anti-neutrinos will be produced before the 5-10 GeV neutrinos due to dynamical decoupling of neutrons from the rest of the fireball. Observation of these neutrinos will shed more light on the nature of the GRB progenitors and also be a unique signature of physics beyond the standard model. A possible way of detecting these neutrinos in future is also discussed.

Sarira Sahu

2007-02-27T23:59:59.000Z

220

Sustainable Coastal Development 2010 Annual Report Due to shrinking budgets, the Sustainable Coastal Development (SCD) focus team convened via  

E-Print Network [OSTI]

. This publicity helps promote local tourism. Ocean-Renewable Energy Sea Grant has been involved in alternative energies and renewable energy development. In 2010, Programs became more involved in the processSustainable Coastal Development 2010 Annual Report Due to shrinking budgets, the Sustainable

Note: This page contains sample records for the topic "unscheduled downtime due" 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

Fluid Statics When the fluid velocity is zero, called the hydrostatic condition, the pressure variation is due only to the  

E-Print Network [OSTI]

and zdirections can be calculated. The total net force vector, due to pressure, is: Notice that the termFluid Statics When the fluid velocity is zero, called the hydrostatic condition, the pressure the element is at rest, summation of all forces must equal zero. 0 0 1 2 From geometry, . After

Bahrami, Majid

222

Abstract-The control of the hand in primate species is characterized by a high dimensionality, due to the large  

E-Print Network [OSTI]

neurobiological findings. We further develop a computational model, consisting of several brain areas related-grasp tasks are considered quite interesting, due to the diverge roles of the collaborating brain regions each joint individually, seems rather redundant. Recent studies in neurobiology indicate that our brain

Trahanias, Panos

223

Cell damage extent due to irradiation with nanosecond laser pulses under cell culturing medium and dry environment  

E-Print Network [OSTI]

Cell damage extent due to irradiation with nanosecond laser pulses under cell culturing medium and dry environment Francisco G. Pérez-Gutiérrez1 , Gabriel Guillen2 , Rodger Evans3 Santiago Camacho with nanosecond laser pulses under two distinct scenarios: (a) with culturing medium positioning the beam waist

Aguilar, Guillermo

224

Is the Extended Red Emission due to CO? Philip D. Bennett, Graham M. Harper, and Alexander Brown  

E-Print Network [OSTI]

Is the Extended Red Emission due to CO? Philip D. Bennett, Graham M. Harper, and Alexander Brown. The Extended Red Emission (ERE) is a broad emission feature ob­ served between 5000 and 8000 š A in a large to be correct. The strongest known source of the ERE is the bipolar nebula (the ``Red Rect­ angle'') associated

Harper, Graham

225

CSC 260, Spring 1999 Assignment #3 Due in tutorial on April 9. Worth 10% of the course grade.  

E-Print Network [OSTI]

is thinking of installing some number of solar power generating panels, to replace power that is currently. The cost of maintenance, depreciation, and interest on investment for each solar power panel is 16 thousand to generate power. The amount of power each solar power panel can generate varies over the year (due

Neal, Radford M.

226

Wind Bias from Sub-optimal Estimation Due to Geophysical Modeling Error Paul E. Johnson and David G . Long  

E-Print Network [OSTI]

Wind Bias from Sub-optimal Estimation Due to Geophysical Modeling Error -Wind I Paul E. Johnson (which relates the wind to the normalized radar cross section, NRCS, of the ocean surface) is uncertainty in the NRCS for given wind conditions. When the estimated variability is in- cluded in the maximum likelihood

Long, David G.

227

Bayesian models for elevated disease risk due to exposure to uranium mine and mill waste on the Navajo Nation  

E-Print Network [OSTI]

ForReview Only Bayesian models for elevated disease risk due to exposure to uranium mine and mill of Pharmacy, Community Environmental Health Program Keywords: abandoned uranium mines, conditionally specified to ex- posure to uranium mine and mill waste on the Navajo Nation Glenn A. Stark University of New

Huerta, Gabriel

228

CS 312 Problem Set 6: -Shark (CTF) Assigned: April 15, 2004 Due: 11:59PM, May 6, 2004  

E-Print Network [OSTI]

CS 312 Problem Set 6: -Shark (CTF) Assigned: April 15, 2004 Due: 11:59PM, May 6, 2004 Design review your project group to use the RCL interpreter you wrote in PS5 to build a robotic battle capture and design review omitted here) 1 In honor of the lambda calculus, a predecessor to ML and other functional

Myers, Andrew C.

229

hal-00252040,version1-12Feb2008 Near-field induction heating of metallic nanoparticles due to infrared magnetic  

E-Print Network [OSTI]

hal-00252040,version1-12Feb2008 Near-field induction heating of metallic nanoparticles due to infrared magnetic dipole contribution Pierre-Olivier Chapuis, Marine Laroche, Sebastian Volz, and Jean.ecp.fr We revisit the electromagnetic heat transfer between a metallic nanoparticle and a metallic semi

Paris-Sud XI, Université de

230

Abstract--3D IC technologies have recently attracted great attention due to the potential performance improvement, power  

E-Print Network [OSTI]

Abstract--3D IC technologies have recently attracted great attention due to the potential a 3D physical design flow based on OpenAccess (named 3D-Craft) to facilitate the rapid adoption of 3D IC technologies. The OpenAccess extension for 3D-Craft is discussed, and the key components including

Cong, Jason "Jingsheng"

231

Cluster Report or Survey Description Date due to IEA Responsible person(s) Comments Summer Activity Report  

E-Print Network [OSTI]

Cluster Report or Survey Description Date due to IEA Responsible person(s) Comments Summer Activity Report Activity reports for Summer, 2013 January 31, 2014 Academic Department Heads By December 13, 2013, data is provided by IEA for report completion. Fall Activity Report Activity reports for Fall, 2013

Fernandez, Eduardo

232

ABSTRACT: Water resource management in West Africa is often a complicated process due to inadequate resources, climatic  

E-Print Network [OSTI]

in the Volta River Basin include high popu- lation densities, population growth rate, poverty, watershed sizeABSTRACT: Water resource management in West Africa is often a complicated process due to inadequate Basin, West Africa.) Taylor, Joie C., Nick van de Giesen, and Tammo S. Steenhuis, 2006. West Africa

Walter, M.Todd

233

THE BLOCK MUSEUM IS OPEN DURING CONSTRUCTION! Arts Circle Drive is closed due to a construction project on Northwestern's  

E-Print Network [OSTI]

THE BLOCK MUSEUM IS OPEN DURING CONSTRUCTION! Arts Circle Drive is closed due to a construction project on Northwestern's south campus. The following information tells you how to reach the Museum during on the northeast side of the garage and take the pedestrian walkway to the Block Museum. The Museum is the glass

Shahriar, Selim

234

A periodic inspection and replacement policy for systems subject to competing failure modes due to degradation and traumatic events  

E-Print Network [OSTI]

A periodic inspection and replacement policy for systems subject to competing failure modes due-making. A condition-based periodic inspection/replacement policy is developed and compared with a benchmark time- based block replacement policy. Numerical results show that it is indeed useful to follow closely

Paris-Sud XI, Université de

235

French vertical flow constructed wetlands: reed bed behaviour and limits due to hydraulic overloading on first stage filters  

E-Print Network [OSTI]

French vertical flow constructed wetlands: reed bed behaviour and limits due to hydraulic with the European standards. Keywords: Vertical flow constructed wetlands; hydraulic overload; hydraulic behaviour. INTRODUCTION Vertical flow constructed wetlands (VFCWs) have been very successful in France over the last five

Paris-Sud XI, Université de

236

Effect of the plasma shapes on intrinsic rotation due to collisionless ion orbit loss in the tokamak edge plasmas  

SciTech Connect (OSTI)

Distribution of the intrinsic rotation due to collisionless ion orbit loss near the tokamak edge region is studied by using an analytical model based on ion guiding center orbit approximation. A peak of the averaged ion orbit loss momentum fraction is found very near inside the separatrix region in a double null divertor configuration but is not found inside the last closed flux surface region in an outer limiter configuration. For the double null divertor configuration, the intrinsic rotation due to ion orbit loss depends on the plasma shape. With the increase in elongation and triangularity, the peak of the averaged ion orbit loss momentum fraction increases and it moves inward for the lower plasma current.

Ou, Jing, E-mail: ouj@ipp.ac.cn [Institute of Plasma Physics, Chinese Academy of Sciences, Heifei 230031 (China); Center for Magnetic Fusion Theory, Chinese Academy of Sciences, Heifei 230031 (China); Wu, Guojiang [Institute of Plasma Physics, Chinese Academy of Sciences, Heifei 230031 (China); Li, Xinxia [Institute of Plasma Physics, Chinese Academy of Sciences, Heifei 230031 (China); School of Nuclear Science and Technology, University of South China, Hengyang 421001 (China)

2014-07-15T23:59:59.000Z

237

Name ___KEY_______________ Due Date: __________________  

E-Print Network [OSTI]

solar system formed. Following the Big Bang, some first generation stars became supernovae, spreading an atmosphere with about 20% oxygen, compared to no free oxygen early in the Earth's history? Write down. Photosynthesis by algae eventually produced free oxygen in the atmosphere, which allowed for development of air

Kirby, Carl S.

238

2014 ALCC Proposals Due  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICS H. I.PlasmaFebruaryNovemberDecember 2014ALCC

239

Reduced heat flow in light water (H2O) due to heavy water (D2O) William R. Gormana)  

E-Print Network [OSTI]

Reduced heat flow in light water (H2O) due to heavy water (D2O) William R. Gormana) and James D by over 1000% with the addition of heavy water. A column of light water cools from 25°C to 0°C in 11 hours, however, with the addition of heavy water it takes more than 100 hours. There is a concentration

Suzuki, Masatsugu

240

Use of EMCS Recorded Data to Identify Potential Savings Due to Improved HVAC Operations & Maintenance (O&M)  

E-Print Network [OSTI]

Use of EMCS Recorded Data to Identify Potential Savings Due to Improved HVAC Operations & Maintenance(O&M) Mingsheng Liu, Yeqiao Zhu, and David Claridge Energy Systems Laboratory Texas A&M University ABSTRACT In most chiller and boiler central... and cooling energy consumption using an appropriate model [Liu 1995, Liu and Claridge 19951 with the bin weather data for each building. Step 5: Calculate the campus consumption as the sum of consumption of all buildings. Step 6: Compare the simulated...

Liu, M.; Zhu, Y.; Claridge, D. E.

1996-01-01T23:59:59.000Z

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


241

An evaluation of elemental mercury vapor exposure to children due to silver-mercury dental amalgam restorations  

E-Print Network [OSTI]

AN EVALUATION OF ELEMENTAL MERCURY VAPOR EXPOSURE TO CHILDREN DUE TO SILVER-MERCURY DENTAL AMALGAM RESTORATIONS A Thesis By RONALD DALE TAYLOR Submitted to the Office of Graduate Studies College Texas A&M University in partial fulfillment.... . . . . 1X LIST OF FIGURES. I. INTRODUCTION. II ' LITERATURE REVIEW Dental Mercury Toxicology Body Burden. Inhalation Exposure. Childhood Exposure III. METHODOLOGY. . . . 3 5 . . . 8 . . . 10 . . . 14 . 16 Human Research Committee...

Taylor, Ronald Dale

1989-01-01T23:59:59.000Z

242

Changes in ecosystem services and runoff due to land use change in the watersheds of San Antonio, Texas  

E-Print Network [OSTI]

services. Barbier (1994) identified wetland ecosystem services as prevention of storm damage, flood and water flow control, support of fisheries, nutrient and waste absorption, recreation and water transport, agriculture, wildlife products, wood products...CHANGES IN ECOSYSTEM SERVICES AND RUNOFF DUE TO LAND USE CHANGE IN THE WATERSHEDS OF SAN ANTONIO, TEXAS A Thesis by HEATHER GRACE HARRIS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

Harris, Heather Grace

2000-01-01T23:59:59.000Z

243

Evaluation of the electromagnetic effects due to direct lighting to nuclear explosive areas at Pantex. Final report  

SciTech Connect (OSTI)

This report summarizes the effort to quantify the electromagnetic environments in the nuclear explosive areas at Pantex due to direct lightning. The fundamental measure of the threat to nuclear safety is assumed to be the maximum voltage between any two points in an assembly area, which is then available for producing arcing or for driving current into critical subsystems of a nuclear weapon. This maximum voltage has been computed with simple analytical models and with three-dimensional finite-difference computer codes.

Merewether, K.O.; Chen, K.C.

1993-11-01T23:59:59.000Z

244

Nonlinear excitation of second sound in quantum solutions He3-He4 due to light wave absorption  

E-Print Network [OSTI]

Nonlinear excitation of second sound in superfluid solutions He3-He4 by light waves due to their absorption is discussed. Nonlinear wave equations that model the interaction of second-sound waves with light waves are derived, the expression for the nonlinear interaction length is obtained and an order-of-magnitude numerical estimate of the distance at which a second-sound wave could be amplified from a fluctuation level up to observable values is performed.

N. I. Pushkina

2007-03-05T23:59:59.000Z

245

Soft-Gluon Production Due to a Gluon Loop in a Constant Chromo-Electric Background Field  

E-Print Network [OSTI]

We obtain an exact result for the soft gluon production and its p_T distribution due to a gluon loop in a constant chromo-electric background field E^a with arbitrary color. Unlike Schwinger's result for e^+e^- pair production in QED which depends only on one gauge invariant quantity, the Electric field E, we find that the p_T distribution of the gluons depend on two gauge invariant quantities, E^aE^a and [d_{abc}E^aE^bE^c]^2.

Gouranga C. Nayak; Peter van Nieuwenhuizen

2005-05-24T23:59:59.000Z

246

Exploration of Quench Initiation Due to Intentional Geometrical Defects in a High Magnetic Field Region of an SRF Cavity  

SciTech Connect (OSTI)

A computer program which was used to simulate and analyze the thermal behaviors of SRF cavities has been developed at Jefferson Lab using C++ code. This code was also used to verify the quench initiation due to geometrical defects in high magnetic field region of SRF cavities. We built a CEBAF single cell cavity with 4 artificial defects near equator, and this cavity has been tested with T-mapping. The preheating behavior and quench initiation analysis of this cavity will be presented here using the computer program.

J. Dai, K. Zhao, G.V. Eremeev, R.L. Geng, A.D. Palczewski; Dai, J. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Palczewski, A. D. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Eremeev, G. V. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Geng, R. L. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Zhao, K. [Institute of Heavy Ion Physics, Peking University, Beijing (China)

2011-07-01T23:59:59.000Z

247

Water quality improvements in the Upper North Bosque River watershed due to phosphorous export through turfgrass sod  

E-Print Network [OSTI]

.S., Texas A&M University Chair of Advisory Committee: Dr. Clyde L. Munster The Upper North Bosque River (UNBR) watershed is under a Total Maximum Daily Load (TMDL) mandate to reduce Phosphorus (P) due to excess nutrients in the watershed. To address... of the manure applied P. Plot and field scale research has demonstrated the effectiveness of turfgrass to remove manure phosphorus (P). In order to assess the impact of the turfgrass BMP on a watershed scale, the Soil and Water Assessment Tool (SWAT) was used...

Stewart, George Russell

2005-02-17T23:59:59.000Z

248

Scour of simulated Gulf Coast sand beaches due to wave action in front of sea walls and dune barriers  

E-Print Network [OSTI]

for the degree of MASTER OF SCIENCE May 1971 Ma)or Sub)ect: Civil Engineering SCOUR OF SIM(JLATED GULF COAST SAND BEACHES DUE TO WAVE ACTION IN FRONT OF SEA WALLS AND DUNE BARRIERS Q m Q F z A Thesis z m Q C by CHARLES BURGESS CHESNUTT L' m ) m... angle 53 LIST OF FIGURES (CONTINUED) Figure Page 15 Scour depth at the sea wall versus beach slope for constant wave steepness and varying sea wall angle 54 INTRODUCTION The problem of scour in front of sea walls has plagued coastal engineers...

Chesnutt, Charles Burgess

1971-01-01T23:59:59.000Z

249

Resonance broadening due to particle scattering and mode-coupling in the quasi-linear relaxation of electron beams  

E-Print Network [OSTI]

Of particular interest for radio and hard X-ray diagnostics of accelerated electrons during solar flares is the understanding of the basic non-linear mechanisms regulating the relaxation of electron beams propagating in turbulent plasmas. In this work, it is shown that in addition to scattering of beam electrons, scattering of the beam-generated Langmuir waves via for instance mode-coupling, can also result in broadening of the wave-particle resonance. We obtain a resonance-broadened version of weak-turbulence theory with mode-coupling to ion-sound modes. Resonance broadening is presented here as a unified framework which can quantitatively account for the reduction and possible suppression of the beam instability due to background scattering of the beam electrons themselves or due to scattering of the beam-generated Langmuir waves in fluctuating plasmas. Resonance broadening being essentially equivalent to smoothing of the electron phase-space distribution, it is used to construct an intuitive physical pictu...

Bian, Nicolas H; Ratcliffe, Heather

2015-01-01T23:59:59.000Z

250

Hydrodynamic forces due to waves and a current induced on a pipeline placed in an open trench  

E-Print Network [OSTI]

0. 5 Vertical Force Reduction Factor 0. 5 0. 4 0. 3 0. 3 Figure 1. Typical Force Reduction Factors Due to Trench Shape. (After 8) 1. 0 0. 8 0. 6 0. 4 0. 2 h/D 0 5 1 0 1. 5 2 0 (a) Drag C&/CF 1. 0 0. 8 0. 6 0. 4 0. 2 0 0. 5 1. 0... 1. 5 2. 0 h/D (b) Inertia Ct. /Ct. ' 1. 0 0. 8 0. 6 0. 4 0. 2 0 0. 5 1. 0 1. 5 2. 0 h/D (c) Lift Figure 2. Relative Force Coefficients vs Relative Trench Depth. (After 13) Uc/Uw 1 2 Ct 5 4 3 2 1 Uc/Uw 2 CL 5 4 3 2 1 Uc...

Lee, Jaeyoung

2012-06-07T23:59:59.000Z

251

Method and apparatus for simulating atomospheric absorption of solar energy due to water vapor and CO.sub.2  

DOE Patents [OSTI]

A method and apparatus for improving the accuracy of the simulation of sunlight reaching the earth's surface includes a relatively small heated chamber having an optical inlet and an optical outlet, the chamber having a cavity that can be filled with a heated stream of CO.sub.2 and water vapor. A simulated beam comprising infrared and near infrared light can be directed through the chamber cavity containing the CO.sub.2 and water vapor, whereby the spectral characteristics of the beam are altered so that the output beam from the chamber contains wavelength bands that accurately replicate atmospheric absorption of solar energy due to atmospheric CO.sub.2 and moisture.

Sopori, Bhushan L. (Denver, CO)

1995-01-01T23:59:59.000Z

252

Method and apparatus for simulating atmospheric absorption of solar energy due to water vapor and CO{sub 2}  

DOE Patents [OSTI]

A method and apparatus for improving the accuracy of the simulation of sunlight reaching the earth`s surface includes a relatively small heated chamber having an optical inlet and an optical outlet, the chamber having a cavity that can be filled with a heated stream of CO{sub 2} and water vapor. A simulated beam comprising infrared and near infrared light can be directed through the chamber cavity containing the CO{sub 2} and water vapor, whereby the spectral characteristics of the beam are altered so that the output beam from the chamber contains wavelength bands that accurately replicate atmospheric absorption of solar energy due to atmospheric CO{sub 2} and moisture. 8 figs.

Sopori, B.L.

1995-06-20T23:59:59.000Z

253

Momentum transport in the vicinity of q{sub min} in reverse shear tokamaks due to ion temperature gradient turbulence  

SciTech Connect (OSTI)

We present an analytic study of momentum transport of tokamak plasmas in the vicinity of minimum safety factor (q) position in reversed magnetic shear configuration. Slab ion temperature gradient modes with an equilibrium flow profile are considered in this study. Quasi-linear calculations of momentum flux clearly show the novel effects of q-curvature on the generation of intrinsic rotation and mean poloidal flow without invoking reflectional symmetry breaking of parallel wavenumber (k{sub ?}). This q-curvature effect originates from the inherent asymmetry in k{sub ?} populations with respect to a rational surface due to the quadratic proportionality of k{sub ?} when q-curvature is taken into account. Discussions are made of possible implications of q-curvature induced plasma flows on internal transport barrier formation in reversed shear tokamaks.

Singh, Rameswar, E-mail: rameswar@ipr.res.in [Institute for Plasma Research, Bhat, Gandhinagar 382 428 (India) [Institute for Plasma Research, Bhat, Gandhinagar 382 428 (India); Laboratoire de Physique des Plasmas, Ecole Polytechnique route de Saclay, 91128 Palaiseau Cedex (France); Singh, R [Institute for Plasma Research, Bhat, Gandhinagar 382 428 (India) [Institute for Plasma Research, Bhat, Gandhinagar 382 428 (India); WCI Center for Fusion Theory, National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of); Jhang, Hogun [WCI Center for Fusion Theory, National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of)] [WCI Center for Fusion Theory, National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of); Diamond, P. H. [WCI Center for Fusion Theory, National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of) [WCI Center for Fusion Theory, National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of); Center for Momentum Transport and Flow Organization, University of California, San Diego, California 92093 (United States); Center for Astrophysics and Space Sciences, University of California San Diego, 9500 Gilman Dr., La Jolla, California 92093-0424 (United States)

2014-01-15T23:59:59.000Z

254

Experimental evidence of the increased transport due to the wall bounded magnetic drift in low temperature plasma  

SciTech Connect (OSTI)

This paper presents experimental results on plasma transport across the magnetic field (B) in magnetized low-temperature plasma sources. Due to the presence of chamber walls, this transport can be complex even in a non-turbulent regime. In particular, in configurations without cylindrical symmetry, the magnetic drifts tend to be bounded by the chamber walls, thereby inducing plasma asymmetry and reducing magnetic confinement. In this work, we measure electron and ion current densities at metal chamber walls bounding a rectangular magnetic filter and demonstrate that these current densities are asymmetrically nonuniform. We also provide an experimental confirmation of model predictions of increased cross-field electron transport in such filter configuration, scaling as 1/B rather than the classical 1/B{sup 2} scaling.

Gaboriau, F., E-mail: gaboriau@laplace.univ-tlse.fr; Baude, R. [Universit de Toulouse, UPS, INPT, LAPLACE (Laboratoire Plasma et Conversion dnergie), 118 route de Narbonne, F-31062 Toulouse cedex 9 (France); Hagelaar, G. J. M. [Universit de Toulouse, UPS, INPT, LAPLACE (Laboratoire Plasma et Conversion dnergie), 118 route de Narbonne, F-31062 Toulouse cedex 9 (France); CNRS, LAPLACE, F-31062, Toulouse (France)

2014-05-26T23:59:59.000Z

255

Parametric study of the potential for BWR ECCS strainer blockage due to LOCA generated debris. Final report  

SciTech Connect (OSTI)

This report documents a plant-specific study for a BWR/4 with a Mark I containment that evaluated the potential for LOCA generated debris and the probability of losing long term recirculation capability due ECCS pump suction strainer blockage. The major elements of this study were: (1) acquisition of detailed piping layouts and installed insulation details for a reference BWR; (2) analysis of plant specific piping weld failure probabilities to estimate the LOCA frequency; (3) development of an insulation and other debris generation and drywell transport models for the reference BWR; (4) modeling of debris transport in the suppression pool; (5) development of strainer blockage head loss models for estimating loss of NPSH margin; (6) estimation of core damage frequency attributable to loss of ECCS recirculation capability following a LOCA. Elements 2 through 5 were combined into a computer code, BLOCKAGE 2.3. A point estimate of overall DEGB pipe break frequency (per Rx-year) of 1.59E-04 was calculated for the reference plant, with a corresponding overall ECCS loss of NPSH frequency (per Rx-year) of 1.58E-04. The calculated point estimate of core damage frequency (per Rx-year) due to blockage related accident sequences for the reference BWR ranged from 4.2E-06 to 2.5E-05. The results of this study show that unacceptable strainer blockage and loss of NPSH margin can occur within the first few minutes after ECCS pumps achieve maximum flows when the ECCS strainers are exposed to LOCA generated fibrous debris in the presence of particulates (sludge, paint chips, concrete dust). Generic or unconditional extrapolation of these reference plant calculated results should not be undertaken.

Zigler, G.; Brideau, J.; Rao, D.V.; Shaffer, C.; Souto, F.; Thomas, W. [Science and Engineering Associates, Inc., Albuquerque, NM (United States)

1995-10-01T23:59:59.000Z

256

"Carbon emission offsets for aviation-generated emissions due to international travel to and from New Zealand" revised personal version of paper to appear in Energy Policy (in  

E-Print Network [OSTI]

"Carbon emission offsets for aviation-generated emissions due to international travel to and from.1016/j.enpol.2008.10.046 1 CARBON EMISSION OFFSETS FOR AVIATION-GENERATED EMISSIONS DUE TO INTERNATIONAL-called carbon offsetting schemes have emerged that allow individual travellers and companies to compensate

Otago, University of

257

Neutrino and anti-neutrino energy loss rates due to iron isotopes suitable for core-collapse simulations  

E-Print Network [OSTI]

Accurate estimate of neutrino energy loss rates are needed for the study of the late stages of the stellar evolution, in particular for cooling of neutron stars and white dwarfs. The energy spectra of neutrinos and antineutrinos arriving at the Earth can also provide useful information on the primary neutrino fluxes as well as neutrino mixing scenario (it is to be noted that these supernova neutrinos are emitted after the supernova explosion which is a much later stage of stellar evolution than that considered in this paper). Recently an improved microscopic calculation of weak-interaction mediated rates for iron isotopes was introduced using the proton-neutron quasiparticle random phase approximation (pn-QRPA) theory. Here I present for the first time the fine-grid calculation of the neutrino and anti-neutrino energy loss rates due to $^{54,55,56}$Fe in stellar matter. In the core of massive stars isotopes of iron, $^{54,55,56}$Fe, are considered to be key players in decreasing the electron-to-baryon ratio ($Y_{e}$) mainly via electron capture on these nuclide. Core-collapse simulators may find this calculation suitable for interpolation purposes and for necessary incorporation in the stellar evolution codes. The calculated cooling rates are also compared with previous calculations.

Jameel-Un Nabi

2014-08-19T23:59:59.000Z

258

Simulation study of dose enhancement in a cell due to nearby carbon and oxygen in particle radiotherapy  

E-Print Network [OSTI]

The aim of this study is to investigate the dose-deposition enhancement by alpha-particle irradiation in a cellular model using carbon and oxygen chemical compositions.A simulation study was performed to study dose enhancement due to carbon and oxygen for a human cell where Geant4 code used for the alpha-particle irradiation to the cellular phantom. The characteristic of dose enhancement in the nucleus and cytoplasm by the alpha-particle radiation was investigated based on concentrations of the carbon and oxygen compositions and was compared with those by gold and gadolinium.The results show that both the carbon and oxygen-induced dose enhancement was found to be more effective than those of gold and gadolinium. We found that the dose-enhancement effect was more dominant in the nucleus than in the cytoplasm if carbon or oxygen is uniformly distributed in a whole cell. In the condition that the added chemical composition was inserted only into the cytoplasm, the effect of the dose enhancement in nucleus become...

Shin, Jae Ik; Cho, Sungho; Kim, Eun Ho; Song, Yongkeun; Jung, Won-Gyun; Yoo, SeungHoon; Shin, Dongho; Lee, Se Byeong; Yoon, Myonggeun; Incerti, Sebastian; Geso, Moshi; Rosenfeld, Anatoly B

2015-01-01T23:59:59.000Z

259

EVALUATION OF TEMPORAL VARIATIONS IN HYDRAULIC CAPTURE DUE TO CHANGING FLOW PATTERNS USING MAPPING AND MODELING TECHNIQUES  

SciTech Connect (OSTI)

Robust performance evaluation represents one of the most challenging aspects of groundwater pump-and-treat (P&T) remedy implementation. In most cases, the primary goal of the P&T system is hydraulic containment, and ultimately recovery, of contaminants to protect downgradient receptors. Estimating the extent of hydraulic containment is particularly challenging under changing flow patterns due to variable pumping, boundaries and/or other conditions. We present a systematic approach to estimate hydraulic containment using multiple lines of evidence based on (a) water-level mapping and (b) groundwater modeling. Capture Frequency Maps (CFMs) are developed by particle tracking on water-level maps developed for each available water level data set using universal kriging. In a similar manner, Capture Efficiency Maps (CEMs) are developed by particle tracking on water-levels calculated using a transient groundwater flow model: tracking is undertaken independently for each stress period using a very low effective porosity, depicting the 'instantaneous' fate of each particle each stress period. Although conceptually similar, the two methods differ in their underlying assumptions and their limitations: their use together identifies areas where containment may be reliable (i.e., where the methods are in agreement) and where containment is uncertain (typically, where the methods disagree). A field-scale example is presented to illustrate these concepts.

SPILIOTOPOULOS AA; SWANSON LC; SHANNON R; TONKIN MJ

2011-04-07T23:59:59.000Z

260

Evolution of pulsar high-energy pulse profiles due to geodetic precession in the striped wind model  

E-Print Network [OSTI]

Geodetic precession has been observed directly in the double pulsar system PSR J0737-3039. Its rate has even been measured and is in agreement with predictions of general relativity. Very recently, the double pulsar has been detected in X-rays and gamma-rays. This opens up the hope to observe geodetic precession in the high-energy pulse profile of this system. Unfortunately the geometric configuration of the binary renders unlikely any detection of such an effect. Nevertheless, this precession should be present in other relativistic binaries or double neutron star systems containing at least one X-ray or gamma-ray pulsar.}{In this paper we compute the variation of the high-energy pulse profile expected from this geodetic motion according to the striped wind model. We compare our results with two-pole caustic and outer gap emission patterns.}{We show that for a sufficient misalignment between the orbital angular momentum and the spin angular momentum, significant change in the pulse profile due to geodetic pre...

Petri, J

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "unscheduled downtime due" from the National Library of EnergyBeta (NLEBeta).
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261

Radiation and Background Levels in a CLIC Detector due to Beam-Beam Effects Optimisation of Detector Geometries and Technologies  

E-Print Network [OSTI]

The high charge density---due to small beam sizes---and the high energy of the proposed CLIC concept for a linear electron--positron collider with a centre-of-mass energy of up to 3~TeV lead to the production of a large number of particles through beam-beam interactions at the interaction point during every bunch crossing (BX). A large fraction of these particles safely leaves the detector. A still significant amount of energy will be deposited in the forward region nonetheless, which will produce secondary particles able to cause background in the detector. Furthermore, some particles will be created with large polar angles and directly cause background in the tracking detectors and calorimeters. The main sources of background in the detector, either directly or indirectly, are the incoherent $mathrm{e}^{+}mathrm{e}^{-}$ pairs and the particles from $gammagamma ightarrow$ hadron events. The background and radiation levels in the detector have to be estimated, to study if a detector is feasible, that can han...

Sailer, Andr; Lohse, Thomas

2013-01-10T23:59:59.000Z

262

The uncertainties due to quark energy loss on determining nuclear sea quark distribution from nuclear Drell-Yan data  

E-Print Network [OSTI]

By means of two different parametrizations of quark energy loss and the nuclear parton distributions determined only with lepton-nuclear deep inelastic scattering experimental data, a leading order phenomenological analysis is performed on the nuclear Drell-Yan differential cross section ratios as a function of the quark momentum fraction in the beam proton and target nuclei for E772 experimental data. It is shown that there is the quark energy loss effect in nuclear Drell-Yan process apart from the nuclear effects on the parton distribution as in deep inelastic scattering. The uncertainties due to quark energy loss effect is quantified on determining nuclear sea quark distribution by using nuclear Drell-Yan data. It is found that the quark energy loss effect on nuclear Drell-Yan cross section ratios make greater with the increase of quark momentum fraction in the target nuclei. The uncertainties from quark energy loss become bigger as the nucleus A come to be heavier. The Drell-Yan data on proton incident middle and heavy nuclei versus deuterium would result in an overestimate for nuclear modifications on sea quark distribution functions with neglecting the quark energy loss. Our results are hoped to provide good directional information on the magnitude and form of nuclear modifications on sea quark distribution functions by means of the nuclear Drell-Yan experimental data.

C. G. Duan; N. Liu; G. L. Li

2008-11-05T23:59:59.000Z

263

Evolution of Spacetime arises due to the departure from Holographic Equipartition in all Lanczos-Lovelock Theories of Gravity  

E-Print Network [OSTI]

In the case of general relativity one can interpret the Noether charge in any bulk region as the heat content $TS$ of its boundary surface. Further, the time evolution of spacetime metric in Einstein's theory arises due to the difference $(N_{sur}-N_{bulk})$ of suitably defined surface and bulk degrees of freedom. We show that this thermodynamic interpretation generalizes in a natural fashion to all Lanczos-Lovelock models of gravity. The Noether charge, related to time evolution vector field, in a bulk region of space is equal to the heat content $TS$ of the boundary surface with the temperature $T$ defined using local Rindler observers and $S$ being the Wald entropy. Using the Wald entropy to define the surface degrees of freedom $N_{sur}$ and Komar energy density to define the bulk degrees of freedom $N_{bulk}$, we can also show that the time evolution of the geometry is sourced by $(N_{sur}-N_{bulk})$. When it is possible to choose the foliation of spacetime such that metric is independent of time, the above dynamical equation yields the holographic equipartition for Lanczos-Lovelock gravity with $N_{sur}=N_{bulk}$. The implications are discussed.

Sumanta Chakraborty; T. Padmanabhan

2014-12-04T23:59:59.000Z

264

CASE REPORT Laparoscopic Treatment of Bowel Obstruction Due to a Bezoar in a Meckels Diverticulum  

E-Print Network [OSTI]

Background and Objectives: Meckels diverticulum is a common anomaly of the gastrointestinal tract that may result in gastrointestinal bleeding, diverticulitis, and small bowel obstruction. This report describes the use of laparoscopy to treat a rare complication of Meckels diverticulumsmall bowel obstruction due to phytobezoar impaction. More generally, it provides an example of the feasibility and utility of a laparoscopic approach to small bowel obstructions of unknown causes. Methods: A 34-year-old male presented to the emergency department complaining of episodic abdominal pain and vomiting. He had no history of abdominal surgery. His vital signs were stable, and his abdomen was distended, but only mildly tender. He had no abdominal wall hernias on examination. Imaging was consistent with small bowel obstruction. He was brought to the operating room where laparoscopy revealed a Meckels diverticulum with an impacted phytobezoar as the source of obstruction. The diverticulum was resected and the phytobezoar removed laparoscopically. Results: The patient recovered well and was discharged home on the third postoperative day, tolerating a regular diet. Conclusions: Phytobezoar impaction in a Meckels diverticulum causing small bowel obstruction is a rare event. It can be effectively treated laparoscopically. This case provides an example of the potential utility of laparoscopy in treating small bowel obstructions of unclear etiology.

Peter J. Fagenholz; Marc A. De Moya

265

High Temperature Expansion Due to Compression Test for the Determination of a Cladding Material Failure Criterion under RIA Loading Conditions  

SciTech Connect (OSTI)

This paper is mainly dedicated to the development of an out-of-pile test reproducing the thermo-mechanical loading conditions encountered during the first stage of a Reactivity Initiated Accidents (RIA) transient, dominated by Pellet Clad Mechanical Interaction (PCMI). In particular, the strain-controlled clad loading under high strain rate associated with temperatures up to 600 deg. C expected during the PCMI phase is simulated by an Expansion Due to Compression (EDC) test achievable at high temperature. The use of appropriate materials for the inner pellet made it possible to achieve the tests from 20 deg. C up to 900 deg. C. The interpretation of the test data is supported by Finite Element Analysis (FEA) including parameters tuned using an inverse method coupling FEA and tests results. A deformation model, identified upon the PROMETRA (Transient Mechanical Properties) experimental database and describing the anisotropic viscoplastic behavior of Cold-Worked Stress Relieved Zircaloy-4 cladding alloys under typical RIA loading conditions, is exploited. The combined analysis of experimental results and finite element simulations provides a deeper understanding of the deformation mode (near pure hoop tension) that arises during the tests. The failure mode appears to be representative of that obtained on tubes during the PCMI stage of RIA experiments. An appropriate device is currently developed in order to reach a bi-axiality of the loading path closer to that expected during the PCMI stage (between plane-strain and equal-biaxial tension). (authors)

Le Saux, M.; Poussard, C.; Averty, X.; Sainte Catherine, C.; Carassou, S. [CEA-Saclay, DEN/DMN/SEMI, 91191 Gif-Sur-Yvette (France); Besson, J. [Centre des Materiaux, Mines Paris, CNRS UMR 7633, BP 87, 91003 Evry (France)

2007-07-01T23:59:59.000Z

266

Volume Changes of Experimental Carotid Sidewall Aneurysms Due to Embolization with Liquid Embolic Agents: A Multidetector CT Angiography Study  

SciTech Connect (OSTI)

Iodine-containing polyvinyl alcohol polymer (I-PVAL) is a novel precipitating liquid embolic that allows for artifact-free evaluation of CT angiography (CTA). As accurate aneurysm volumetry can be performed with multidetector CTA, we determined volumes of experimental aneurysms before, immediately after, and 4 weeks after embolization of 14 porcine experimental carotid sidewall aneurysms with this liquid embolic. An automated three-dimensional software measurement tool was used for volumetric analysis of volume-rendering CTA data. Furthermore, intra-aneurysmal pressure changes during liquid embolization were measured in four silicone aneurysms and potential polymer volume changes within 4 weeks were assessed in vitro. Liquid embolic injection was performed during temporary balloon occlusion of the aneurysm neck, resulting in a mean occlusion rate of 98.3%. Aneurysms enlarged significantly during embolization by 61.1 {+-} 28.9%, whereas a significant shrinkage of 5.6 {+-} 2.7% was observed within the follow-up period. Histologic analysis revealed an inflammatory foreign body reaction with partial polymer degradation. In silicone aneurysm models, intra-aneurysmal pressure remained unchanged during liquid embolic injection, whereas balloon inflation resulted in a mean pressure increase of 31.2 {+-} 0.7%. No polymer shrinkage was observed in vitro. The aneurysm enlargement noted was presumably due to pressure elevation after balloon inflation, which resulted in dilatation of the weak venous wall of the newly constructed aneurysm-another shortcoming of this experimental aneurysm model. The volume decrease after 4 weeks expressed partial polymer degradation.

Dudeck, O. [Charite, Campus Virchow Clinic, Department of Radiology (Germany)], E-mail: oliver.dudeck@charite.de; Okuducu, A. F. [Charite, Campus Virchow Clinic, Department of Neuropathology (Germany); Jordan, O. [University of Geneva, School of Pharmacy (Switzerland); Tesmer, K.; Pech, M. [Charite, Campus Virchow Clinic, Department of Radiology (Germany); Weigang, E. [Albert-Ludwigs-University of Freiburg, Department of Cardiovascular Surgery (Germany); Ruefenacht, D. A. [University Hospital of Geneva, Neuroradiology Section (Switzerland); Doelker, E. [University of Geneva, School of Pharmacy (Switzerland); Felix, R. [Charite, Campus Virchow Clinic, Department of Radiology (Germany)

2006-12-15T23:59:59.000Z

267

Relationship between the gamma-ray burst pulse width and energy due to the Doppler effect of fireballs  

E-Print Network [OSTI]

We study in details how the pulse width of gamma-ray bursts is related with energy under the assumption that the sources concerned are in the stage of fireballs. Due to the Doppler effect of fireballs, there exists a power law relationship between the two quantities within a limited range of frequency. The power law range and the power law index depend strongly on the observed peak energy $E_p$ as well as the rest frame radiation form, and the upper and lower limits of the power law range can be determined by $E_p$. It is found that, within the same power law range, the ratio of the $FWHM$ of the rising portion to that of the decaying phase of the pulses is also related with energy in the form of power laws. A platform-power-law-platform feature could be observed in the two relationships. In the case of an obvious softening of the rest frame spectrum, the two power law relationships also exist, but the feature would evolve to a peaked one. Predictions on the relationships in the energy range covering both the BATSE and Swift bands for a typical hard burst and a typical soft one are made. A sample of FRED (fast rise and exponential decay) pulse bursts shows that 27 out of the 28 sources belong to either the platform-power-law-platform feature class or the peaked feature group, suggesting that the effect concerned is indeed important for most of the sources of the sample. Among these bursts, many might undergo an obvious softening evolution of the rest frame spectrum.

Y. -P. Qin; Y. -M. Dong; R. -J. Lu; B. -B. Zhang; L. -W. Jia

2005-07-01T23:59:59.000Z

268

An estimate by two methods of thyroid absorbed doses due to BRAVO fallout in several northern Marshall Islands  

SciTech Connect (OSTI)

Estimates of the thyroid absorbed doses due to fallout originating from the 1 March 1954 BRAVO thermonuclear test on Bikini Atoll have been made for several inhabited locations in the Northern Marshall Islands. Rongelap, Utirik, Rongerik and Ailinginae Atolls were also inhabited on 1 March 1954, where retrospective thyroid absorbed doses have previously been reconstructed. Current estimates are based primarily on external exposure data, which were recorded shortly after each nuclear test in the Castle Series, and secondarily on soil concentrations of {sup 137}Cs in samples collected in 1978 and 1988, along with aerial monitoring done in 1978. External exposures and {sup 137}Cs Soil concentrations were representative of the atmospheric transport and deposition patterns of the entire Castle Series tests and show that the BRAVO test was the major contributor to fallout exposure during the Castle series and other test series which were carried out in the Marshall Islands. These data have been used as surrogates for fission product radioiodines and telluriums in order to estimate the range of thyroid absorbed doses that may have occurred throughout the Marshall Islands. Dosimetry based on these two sets of estimates agreed within a factor of 4 at the locations where BRAVO was the dominant contributor to the total exposure and deposition. Both methods indicate that thyroid absorbed doses in the range of 1 Gy (100 rad) may have been incurred in some of the northern locations, whereas the doses at southern locations did not significantly exceed levels comparable to those from worldwide fallout. The results of these estimates indicate that a systematic medical survey for thyroid disease should be conducted, and that a more definitive dose reconstruction should be made for all the populated atolls and islands in the Northern Marshall Islands beyond Rongelap, Utirik, Rongerik and Ailinginae, which were significantly contaminated by BRAVO fallout. 30 refs., 2 figs., 10 tabs.

Musolino, S.V.; Hull, A.P. [Brookhaven National Lab., Upton, NY (United States); Greenhouse, N.A.

1997-10-01T23:59:59.000Z

269

TESTING AND ANALYSIS OF CAP CONCRETE STRESS AND STRAIN DUE TO SHRINKAGE, CREEP, AND EXPANSION FINAL REPORT  

SciTech Connect (OSTI)

In-situ decommissioning of Reactors P- and R- at the Savannah River Site will require filling the reactor vessels with a special concrete based on materials such as magnesium phosphate, calcium aluminate or silica fume. Then the reactor vessels will be overlain with an 8 ft. thick layer of Ordinary Portland Cement (OPC) steel reinforced concrete, called the 'Cap Concrete'. The integrity of this protective layer must be assured to last for a sufficiently long period of time to avoid ingress of water into the reactor vessel and possible movement of radioactive contamination into the environment. During drying of this Cap Concrete however, shrinkage strains are set up in the concrete as a result of diffusion and evaporation of water from the top surface. This shrinkage varies with depth in the poured slab due to a non-uniform moisture distribution. This differential shrinkage results in restraint of the upper layers with larger shrinkage by lower layers with lesser displacements. Tensile stresses can develop at the surface from the strain gradients in the bulk slab, which can lead to surface cracking. Further, a mechanism called creep occurs during the curing period or early age produces strains under the action of restraining forces. To investigate the potential for surface cracking, an experimental and analytical program was started under TTQAP SRNL-RP-2009-01184. Slab sections made of Cap Concrete mixture were instrumented with embedded strain gages and relative humidity sensors and tested under controlled environmental conditions of 23 C and relative humidities (RH) of 40% and 80% over a period of 50 days. Calculation methods were also developed for predictions of stress development in the full-scale concrete placement over the reactor vessels. These methods were evaluated by simulating conditions for the test specimens and the calculation results compared to the experimental data. A closely similar test with strain gages was performed by Kim and Lee for a concrete mixture that did not employ humidity sensors and the admixtures used in this program. Yuan and Wan tried to predict the shrinkage strains and stresses in the Kim and Lee experiment, but did not include a creep analysis. Grasley and Lange conducted full restraint load tests on a concrete prism instrumented with humidity sensors over a 7 day curing period. The hypothetical case of full-scale placement of the Cap Concrete was also analyzed using the developed analytical methods. The calculation performed in this report is for scoping purposes only.

Guerrero, H.; Restivo, M.

2011-08-01T23:59:59.000Z

270

Consistent quantification of climate impacts due to biogenic carbon storage across a range of bio-product systems  

SciTech Connect (OSTI)

Temporary and permanent carbon storage from biogenic sources is seen as a way to mitigate climate change. The aim of this work is to illustrate the need to harmonize the quantification of such mitigation across all possible storage pools in the bio- and anthroposphere. We investigate nine alternative storage cases and a wide array of bio-resource pools: from annual crops, short rotation woody crops, medium rotation temperate forests, and long rotation boreal forests. For each feedstock type and biogenic carbon storage pool, we quantify the carbon cycle climate impact due to the skewed time distribution between emission and sequestration fluxes in the bio- and anthroposphere. Additional consideration of the climate impact from albedo changes in forests is also illustrated for the boreal forest case. When characterizing climate impact with global warming potentials (GWP), we find a large variance in results which is attributed to different combinations of biomass storage and feedstock systems. The storage of biogenic carbon in any storage pool does not always confer climate benefits: even when biogenic carbon is stored long-term in durable product pools, the climate outcome may still be undesirable when the carbon is sourced from slow-growing biomass feedstock. For example, when biogenic carbon from Norway Spruce from Norway is stored in furniture with a mean life time of 43 years, a climate change impact of 0.08 kg CO{sub 2}eq per kg CO{sub 2} stored (100 year time horizon (TH)) would result. It was also found that when biogenic carbon is stored in a pool with negligible leakage to the atmosphere, the resulting GWP factor is not necessarily ? 1 CO{sub 2}eq per kg CO{sub 2} stored. As an example, when biogenic CO{sub 2} from Norway Spruce biomass is stored in geological reservoirs with no leakage, we estimate a GWP of ? 0.56 kg CO{sub 2}eq per kg CO{sub 2} stored (100 year TH) when albedo effects are also included. The large variance in GWPs across the range of resource and carbon storage options considered indicates that more accurate accounting will require case-specific factors derived following the methodological guidelines provided in this and recent manuscripts. -- Highlights: Climate impacts of stored biogenic carbon (bio-C) are consistently quantified. Temporary storage of bio-C does not always equate to a climate cooling impact. 1 unit of bio-C stored over a time horizon does not always equate to ? 1 unit CO{sub 2}eq. Discrepancies of climate change impact quantification in literature are clarified.

Guest, Geoffrey, E-mail: geoffrey.guest@ntnu.no; Bright, Ryan M., E-mail: ryan.m.bright@ntnu.no; Cherubini, Francesco, E-mail: francesco.cherubini@ntnu.no; Strmman, Anders H., E-mail: anders.hammer.stromman@ntnu.no

2013-11-15T23:59:59.000Z

271

EPR Line Shifts and Line Shape Changes Due to Spin Exchange of Nitroxide Free Radicals in Liquids 2. Extension to High Spin Exchange Frequencies and Inhomogeneously  

E-Print Network [OSTI]

EPR Line Shifts and Line Shape Changes Due to Spin Exchange of Nitroxide Free Radicals in Liquids 2 for the EPR spectrum of a nitroxide free radical undergoing spin exchange in the slow exchange limit following

Bales, Barney

272

arXiv:1311.0292v1[astro-ph.EP]1Nov2013 Runaway greenhouse effect on exomoons due to  

E-Print Network [OSTI]

arXiv:1311.0292v1[astro-ph.EP]1Nov2013 Runaway greenhouse effect on exomoons due to irradiation to experience a runaway greenhouse effect. Results. Planetary illumination from a 13-Jupiter-mass planet onto

Barnes, Rory

273

Suppression of electric and magnetic fluctuations and improvement of confinement due to current profile modification by biased electrode in Saha Institute of Nuclear Physics tokamak  

SciTech Connect (OSTI)

Improvement of plasma confinement is achieved in normal q{sub a} discharges of SINP-tokamak by introducing a biased electrode inside the last closed flux surface. All the important features of high confinement mode are observed biasing the electrode negatively with respect to the vacuum vessel. Arrays of electric and magnetic probes introduced in the edge plasma region reveal suppression of electric and magnetic fluctuations over distinct frequency ranges as well as modification of the toroidal current profile due to biasing. Further analysis identifies the electrostatic fluctuations to be due to drift mode and the magnetic fluctuations may be of slow compressional Alfven waves. Both get suppressed due to current profile modification during biasing, hence leading to the improvement of plasma confinement.

Basu, Debjyoti; Pal, Rabindranath [Saha Institute of Nuclear Physics, 1/AF-Bidhannagar, Kolkata 700064 (India); Ghosh, Joydeep; Chattopadhyay, Prabal K. [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

2012-07-15T23:59:59.000Z

274

Effect of vitamin A and fish meal on stress resistance due to changes in environment, vitamin A storage, and reproductive performance of turkeys  

E-Print Network [OSTI]

PROCEDURE 3 Experiment 1--The effect of vitamin A and fish meal on stress resistance due to changes in enviroment and vitamin A storage of Broad Breasted Bronze turkeys IV EXPERIMENTAL PROCEDURE 19 Experiment 2--The effect of Vitamin A and fish meal... on stress resistance due to changes in enviroment and vitamin A storage of Broad Breasted White turkeys V EXPERIMENTAL PROCEDURE 19 30 Experiment. 3--The effect of vitamin A and fish meal on the reproductive perform"nce of Broad Breasted Bronze...

Lozano, Jose Arnoldo

2012-06-07T23:59:59.000Z

275

Development and assessment of electronic manual for well control and blowout containment  

E-Print Network [OSTI]

Fig. 1.4 ? Spindletop Lucas well blowout (1901) 17 As the rotary rig took over for the cable tool rig, and the depth of the wells kept getting deeper, there was a need to control the higher pressures encountered. The developments... this is not achieved, there might be an unscheduled inflow of fluids into the well. Most commonly, the occurrence of a kick is due to the rig crew not doing their job of managing the well pressures adequately. With the event of a kick follows the need...

Grottheim, Odd Eirik

2005-11-01T23:59:59.000Z

276

Analysis of production line motor failure. CRADA final report for CRADA number Y-1293-0215  

SciTech Connect (OSTI)

The Oak Ridge National Laboratory (ORNL) was approached by a Food Products Manufacturer (FPM) to investigate the rapid failure of motors in a manufacturing facility. It was reported that some motors or their bearings were being replaced after as little as four months of service. The deciding symptom for replacement was always high motor vibration. To protect against unscheduled downtime in the middle of a process run, the FPM`s maintenance team removes a motor from service when its vibration level reaches a conservative threshold of approximately 0.4 inches per second. In their experience, motors left in service after reaching this vibration threshold can fail at any time within the time span of the next process run causing significant losses of raw material and production capacity. A peculiar finding of vibration level trend analysis was that at least one motor exhibited cyclic variations with 24-hour periodicity. The vibration level reached a maximum at about 4:00 a.m., ramped down during the day, and then rose again during the night. Another peculiarity was that most of the vibration energy in the affected motors was at the 120 Hz frequency. Since this is twice the 60 Hz line frequency the FPM suspected the vibration was electrically induced. The electric loads at the FPMs plant remain constant during the five days of a continuous production run. Thus, the periodicity of the vibration observed, with its daily peaking at about four am, suggested the possibility of being driven by changes in the electrical power grid external to the plant.

Kueck, J. [Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States); Talbott, C. [M& M Mars, Inc., Chicago, IL (United States)

1995-02-10T23:59:59.000Z

277

Diffusion Coatings for Corrosion-Resistant Components in Coal Gasification Systems  

SciTech Connect (OSTI)

Heat-exchangers, particle filters, turbines, and other components in integrated coal gasification combined cycle system must withstand the highly sulfiding conditions of the high-temperature coal gas over an extended period of time. The performance of components degrades significantly with time unless expensive high alloy materials are used. Deposition of a suitable coating on a low-cost alloy may improve its resistance to such sulfidation attack, and decrease capital and operating costs. The alloys used in the gasifier service include austenitic and ferritic stainless steels, nickel-chromium-iron alloys, and expensive nickel-cobalt alloys. During this period we tested coated alloy coupons under conditions designed to mimic the conditions in the filter unit after the high-temperature heat recovery unit (HTHRU). The filter unit is another important area where corrosion has caused unscheduled downtime, and the remedy has been the use of sintered metal tubes made of expensive alloys such as inconel. The objective of our test was to determine if those coatings on 400-series steel that were not able to withstand the harsher conditions of the HTHRU, may be sufficiently resistant for use in the filter unit, at the reduced temperatures. Indeed, most of our coatings survived well; the exceptions were the coated porous samples of SS316. We continued making improvements to our coatings apparatus and the procedure began during the last quarter. As a result of these modifications, the coupons we are now producing are uniform. We describe the improved procedure for preparing diffusion coatings. Finally, because porous samples of steel in grades other than SS316 are not readily available, we also decided to procure SS409 powder and fabricate our own sintered porous coupons.

Gopala N. Krishnan; Ripudaman Malhotra; Esperanza Alvarez; Kai-Hung Lau; Angel Sanjurjo

2006-01-01T23:59:59.000Z

278

Verification of maximum radial power peaking factor due to insertion of FPM-LEU target in the core of RSG-GAS reactor  

SciTech Connect (OSTI)

Verification of Maximum Radial Power Peaking Factor due to insertion of FPM-LEU target in the core of RSG-GAS Reactor. Radial Power Peaking Factor in RSG-GAS Reactor is a very important parameter for the safety of RSG-GAS reactor during operation. Data of radial power peaking factor due to the insertion of Fission Product Molybdenum with Low Enriched Uranium (FPM-LEU) was reported by PRSG to BAPETEN through the Safety Analysis Report RSG-GAS for FPM-LEU target irradiation. In order to support the evaluation of the Safety Analysis Report incorporated in the submission, the assessment unit of BAPETEN is carrying out independent assessment in order to verify safety related parameters in the SAR including neutronic aspect. The work includes verification to the maximum radial power peaking factor change due to the insertion of FPM-LEU target in RSG-GAS Reactor by computational method using MCNP5and ORIGEN2. From the results of calculations, the new maximum value of the radial power peaking factor due to the insertion of FPM-LEU target is 1.27. The results of calculations in this study showed a smaller value than 1.4 the limit allowed in the SAR.

Setyawan, Daddy, E-mail: d.setyawan@bapeten.go.id [Center for Assessment of Regulatory System and Technology for Nuclear Installations and Materials, Indonesian Nuclear Energy Regulatory Agency (BAPETEN), Jl. Gajah Mada No. 8 Jakarta 10120 (Indonesia); Rohman, Budi [Licensing Directorate for Nuclear Installations and Materials, Indonesian Nuclear Energy Regulatory Agency (BAPETEN), Jl. Gajah Mada No. 8 Jakarta 10120 (Indonesia)

2014-09-30T23:59:59.000Z

279

Loss of top soil due to any of these situations has both short and long-term effects. The top soil is the  

E-Print Network [OSTI]

Loss of top soil due to any of these situations has both short and long-term effects. The top soil practices that can be implemented by a landlord to protect and conserve assets. Soil erosion is not the only the possible impact of rented land on soil conservation. Concerns regarding conservation practices are not new

Duffy, Michael D.

280

Extending the Domain of Comparative Genomics The comparative approach to Genomics is a major success at present and due to the continued  

E-Print Network [OSTI]

Extending the Domain of Comparative Genomics The comparative approach to Genomics is a major success at present and due to the continued accumulation of genomes, the demand for such methods will only from non-genes. But the comparative approach will eventually dominate as the number fo genomes become

Goldschmidt, Christina

Note: This page contains sample records for the topic "unscheduled downtime due" 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

Photo-orientation of liquid crystals due to light-induced desorption and adsorption of dye molecules on an aligning surface  

E-Print Network [OSTI]

Photo-orientation of liquid crystals due to light-induced desorption and adsorption of dye, 60131 Ancona, Italy Received 8 June 2001; published 24 October 2001 We show that adsorption of dye molecules control the light-induced alignment of dye-doped nematic liquid crystal LC on a nonphotosensitive

Reznikov, Yuri

282

ABSTRACT--Due to the sun's intermittent nature, there must be energy storage on a large scale in order for solar  

E-Print Network [OSTI]

ABSTRACT--Due to the sun's intermittent nature, there must be energy storage on a large scale electrode). Since this produces no carbon dioxide this is a very clean process. With the growing demand future. Hydrogen is a potential candidate to act as an energy storage medium in a sustainable energy

Honsberg, Christiana

283

Designing a 3-D optical multilayer due to merging the concepts of stacked and planar-integrated free-space optics  

E-Print Network [OSTI]

Designing a 3-D optical multilayer due to merging the concepts of stacked and planar-integrated free-space optics M. Jarczynski, J. Jahns Optical interconnects aim to overcome the communication dimension [1]. For the optical implementation of 3-D setups suitable microoptics approaches are re- quired

Jahns, Jürgen

284

IEEE International Symposium on Sustainable Systems and Technologies, Washington D.C., May 16-19, 2010 Abstract--Interest in recycling has surged in recent years due  

E-Print Network [OSTI]

featuring PET plastic and aluminum flake separation in the beverage container recycling industry. Index-19, 2010 Abstract--Interest in recycling has surged in recent years due to shifting material costs material recycling rates. In response, recycling systems are becoming more complex as increasing material

Gutowski, Timothy

285

Bandgap Engineering in Disordered Graphene Two-dimensional atomic crystals attract attention due to their unique low-dimensional electron transport  

E-Print Network [OSTI]

Bandgap Engineering in Disordered Graphene ­Two-dimensional atomic crystals attract attention due-gap semiconductor graphene. The relativistic Dirac dispersion of electrons in graphene leads to an anomalous four large compared to electron Fermi wavelength. In high magnetic fields, the cleanest graphene samples

Weston, Ken

286

Seasonal patterns of coarse sediment transport on a mixed sand and gravel beach due to vessel wakes, wind waves, and tidal currents  

E-Print Network [OSTI]

Seasonal patterns of coarse sediment transport on a mixed sand and gravel beach due to vessel wakes, wind waves, and tidal currents Gregory M. Curtiss a, , Philip D. Osborne b,1 , Alexander R. Horner December 2008 Accepted 29 December 2008 Keywords: mixed sand and gravel beach ferry wake wash beach

Talke, Stefan

287

Analysis of biases due to survey non response in the French National Travel Survey 2007-08 ROUX, Sophie; ARMOOGUM, Jimmy  

E-Print Network [OSTI]

, Sophie; ARMOOGUM, Jimmy 12 th WCTR, July 11-15, 2010 ­ Lisbon, Portugal 1 ANALYSIS OF BIASES DUE.roux@inrets.fr ARMOOGUM Jimmy Institut national de recherche sur les transports et leur sécurité (INRETS) Département Grand cedex Tel : +33 (0)1.45.92.55.79 jimmy.armoogum@inrets.fr ABSTRACT While nonresponse results

Boyer, Edmond

288

3D Equilibrium Effects due to RMP application on DIII-D* S. Lazerson1, E. Lazarus2, S. Hudson1, N. Pablant1, D. Gates1  

E-Print Network [OSTI]

3D Equilibrium Effects due to RMP application on DIII-D* S. Lazerson1, E. Lazarus2, S. Hudson1, N that are consistent with the experimental pres- sure and current profiles. A 3D reconstruction using the STELLOPT code the equilibria generated by the 3D codes and between STELLOPT and EFIT are presented. Introduction Interpretation

Hudson, Stuart

289

EPR Line Shifts and Line Shape Changes Due to Spin Exchange of Nitroxide Free Radicals Barney L. Bales* and Miroslav Peric  

E-Print Network [OSTI]

EPR Line Shifts and Line Shape Changes Due to Spin Exchange of Nitroxide Free Radicals in Liquids; In Final Form: July 22, 1997X An expression for the EPR line shape of a nitroxide free radical undergoing,7,10-19 work has been devoted to the EPR spectral changes induced by spin exchange between radicals in liquids

Bales, Barney

290

Control of the dephasing process due to many-body interactions among excitons by using non-Markovian effect in GaAs single quantum well  

SciTech Connect (OSTI)

We show the coherent control of dephasing process of exciton polarization due to heavy hole-heavy hole and heavy hole-light hole scatterings in a GaAs single quantum well. The memory time of the exction scattering is estimated as 0.47 ps.

Ogawa, Y.; Minami, F. [Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551 (Japan)

2013-12-04T23:59:59.000Z

291

Abstract--Current building designs are not energy-efficient enough due to many reasons. One of them is the centralized  

E-Print Network [OSTI]

to not only green buildings but also vast number of the conventional buildings to reduce the energy1 Abstract--Current building designs are not energy-efficient enough due to many reasons. One the occupants' actual usage and adjusting the energy consumption accordingly. In this paper, we discuss our

Jain, Raj

292

Chemical Inventories Are Due March 1, 2012 In order to meet regulatory requirements the University must conduct a periodic inventory of  

E-Print Network [OSTI]

Chemical Inventories Are Due March 1, 2012 In order to meet regulatory requirements the University must conduct a periodic inventory of chemicals on campus. In support of this effort departments with chemicals must submit a inventory by Thursday, March 1, 2012. Campus point of contact to submit inventories

Tennessee, University of

293

Chemical Inventories Are Due March 1, 2013 In order to meet regulatory requirements the University must conduct a periodic inventory of  

E-Print Network [OSTI]

Chemical Inventories Are Due March 1, 2013 In order to meet regulatory requirements the University must conduct a periodic inventory of chemicals on campus. In support of this effort departments with chemicals must submit a inventory by Thursday, March 1, 2013. Campus point of contact to submit inventories

Tennessee, University of

294

Chemical Inventories Are Due March 15, 2011 In order to meet regulatory requirements the University must conduct a periodic inventory of  

E-Print Network [OSTI]

Chemical Inventories Are Due March 15, 2011 In order to meet regulatory requirements the University must conduct a periodic inventory of chemicals on campus. In support of this effort, labs must submit a chemical inventory by Tuesday, March 15, 2011. Campus point of contact to submit inventories

Tennessee, University of

295

Beamlet deflection due to beamlet-beamlet interaction in a large-area multiaperture negative ion source for JT-60U  

SciTech Connect (OSTI)

The JT-60U negative ion source has been designed to produce high current beams of 22 A through grids of 1080 apertures (five segments with nine rows of 24 apertures). One of the key issues is to steer such a high current beam through the multiaperture grids in order to focus the overall beam envelope because the beamlet-beamlet interaction may deflect the outer beamlets outward due to unbalanced space charge repulsion. To clarify the beam deflection in the JT-60U negative ion source, the beamlet trajectory in a multiaperture ion source was calculated by a three-dimensional simulation code. The measured angles of the outmost beamlets were in agreement with the calculated results where space charge of the beamlets was taken into account. It is noticed that the deflection of the outermost beamlet due to the beamlet-beamlet interaction is saturated at 5.2 mrad outward for beamlets more than ten.

Kamada, M.; Hanada, M.; Ikeda, Y.; Grisham, L. R.; Jiang, W. [Japan Atomic Energy Agency, 801-1 Mukoyama, Naka, Ibaraki 311-0193 (Japan); Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543 (United States); Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188 (Japan)

2008-02-15T23:59:59.000Z

296

Cancer Due to Prolonged Inflammation  

E-Print Network [OSTI]

Werb J. Inflammation and cancer. Nature. 2002 December 19;J.T. , Szabo E. , et al. Cancer and inflammation: PromiseInflammation, a Key Event in Cancer Development. Molecular

Lingampalli, Nithya

2013-01-01T23:59:59.000Z

297

NISE Requests Due Feb. 24  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Opticalhttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gifAEnergy2014 SolidGold foil| NationalNISE

298

1 Math 405/607 E: Ass. 0: Due 23 Sept 2009 1. toeplitz: Use the MATLAB function toeplitz to build the matrix A in  

E-Print Network [OSTI]

1 Math 405/607 E: Ass. 0: Due 23 Sept 2009 1. toeplitz: Use the MATLAB function toeplitz to build the matrix A in the demo programs we constructed in class, i.e., which is equivalent to: A=diag(-2*ones(N-2 result to the exact solution by plotting u(xk) and uexact(xk) vs x on one graph and plot the error |u

Peirce, Anthony

299

1 Math 405/607 E: Ass. 0: Due 21 Sept 2012 1. toeplitz: Use the MATLAB function toeplitz to build the matrix A in  

E-Print Network [OSTI]

1 Math 405/607 E: Ass. 0: Due 21 Sept 2012 1. toeplitz: Use the MATLAB function toeplitz to build the matrix A in the demo programs we constructed in class, i.e., which is equivalent to: A=diag(ones(n-2(x) and N = 8. Compare your result to the exact solution by plotting u(xk) and uexact(xk) vs x on one graph

Peirce, Anthony

300

Analysis of Tube Failure Propagation due to Overheating in a Prototype LMFBR Steam-Generator Geometry by Using QUARK-LP Ver.4  

SciTech Connect (OSTI)

A computer code QUARK-LP had been developed to analyze a leak propagation due to overheating in steam generator (SG) heat-transfer tubes of a liquid-metal cooled fast breeder reactor (LMFBR). In Version 4, the reaction zone was divided into three parts; (1) the steam rich zone, (2) the mixing zone and (3) the sodium rich zone, depending on the location from the failed tub. This version includes RELAP5/MOD3 to analyze thermal hydraulics of water/steam in detail. In the analysis using this computer code it was confirmed that leak propagation due to overheating does not happen in the Japanese prototype LMFBRs' SG as was revealed in the analysis of another organization. From the viewpoint of probabilistic safety assessment (PSA) for RIR (risk informed regulation), the applicability of QUARK-LP Version 4 to the analysis of leak propagation due to overheating was examined on a hypothetically severe situation. In order to simulate hypothetical leak propagation due to overheating under the rated power operation, the cover gas pressure detectors were assumed to lose their function in the analysis thereby causing a secondary tube failure intentionally. A series of leak propagation from the initial leak to the secondary leak were simulated, and the possibility of a new tube failure was examined. Based on the analyses, it has been confirmed that this code is able to be applied to the analysis of the tube failure propagation phenomena in a real plant system, and a tertiary leak does not happen even when a secondary leak was introduced intentionally as an application example. (authors)

Yoshihisa, Shindo; Kazuo, Haga [Incorporated Administrative Agency Japan Nuclear Energy Safety Organization (JNES), 4-3-20 Toranomon, Minato-ku, Tokyo 105-0001 (Japan)

2004-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "unscheduled downtime due" 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

Development of equations to determine the increase in pavement condition due to treatment and the rate of decrease in condition after treatment for a local agency pavement network.  

E-Print Network [OSTI]

DEVELOPMENT OF EQUATIONS TO DETERMINE THE INCREASE IN PAVEMENT CONDITION DUE TO TREATMENT AND THE RATE OF DECREASE IN CONDITION AFTER TREATMENT FOR A LOCAL AGENCY PAVEMENT NETWORK A Thesis by MAITHILEE MUKUND DESHMUKH Submitted... to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 2009 Major Subject: Civil Engineering DEVELOPMENT OF EQUATIONS TO DETERMINE THE INCREASE IN PAVEMENT...

Deshmukh, Maithilee Mukund.

2010-07-14T23:59:59.000Z

302

Further observations of a decreasing atmospheric CO2 uptake capacity in the Canada Basin (Arctic Ocean) due to sea ice loss  

E-Print Network [OSTI]

Ocean) due to sea ice loss Brent G.T. Else,1 R.J. Galley,1 B. Lansard,2 D.G. Barber,1 K. Brown,3 L as an atmospheric CO2 sink under the summertime ice-free conditions expected in the near future. Beneath a heavily decayed ice cover, we found surprisingly high pCO2sw (~290320 matm), considering that surface water

Boyer, Edmond

303

Case report of a near medical event in stereotactic radiotherapy due to improper units of measure from a treatment planning system  

SciTech Connect (OSTI)

Purpose: The authors hereby notify the Radiation Oncology community of a potentially lethal error due to improper implementation of linear units of measure in a treatment planning system. The authors report an incident in which a patient was nearly mistreated during a stereotactic radiotherapy procedure due to inappropriate reporting of stereotactic coordinates by the radiation therapy treatment planning system in units of centimeter rather than in millimeter. The authors suggest a method to detect such errors during treatment planning so they are caught and corrected prior to the patient positioning for treatment on the treatment machine. Methods: Using pretreatment imaging, the authors found that stereotactic coordinates are reported with improper linear units by a treatment planning system. The authors have implemented a redundant, independent method of stereotactic coordinate calculation. Results: Implementation of a double check of stereotactic coordinates via redundant, independent calculation is simple and accurate. Use of this technique will avoid any future error in stereotactic treatment coordinates due to improper linear units, transcription, or other similar errors. Conclusions: The authors recommend an independent double check of stereotactic treatment coordinates during the treatment planning process in order to avoid potential mistreatment of patients.

Gladstone, D. J.; Li, S.; Jarvis, L. A.; Hartford, A. C. [Division of Radiation Oncology, Department of Medicine, Dartmouth-Hitchcock Medical Center, Norris Cotton Cancer Center, Lebanon, New Hampshire 03756 (United States); Division of Radiation Oncology, Department of Medicine, Dartmouth-Hitchcock Medical Center, Norris Cotton Cancer Center, Lebanon, New Hampshire 03756 and Department of Radiation Oncology, Temple University Hospital, Philadelphia, Pennsylvania 19104 (United States); Division of Radiation Oncology, Department of Medicine, Dartmouth-Hitchcock Medical Center, Norris Cotton Cancer Center, Lebanon, New Hampshire 03756 (United States)

2011-07-15T23:59:59.000Z

304

Quantification of loss of calcite, pyrite, and organic matter due to weathering of Toarcian black shales and effects on kerogen and bitumen characteristics  

SciTech Connect (OSTI)

Comparison of geochemical data on Posidonia Shale (Early Toarcian) from a shallow unweathered core and from adjacent weathered exposures of the same facies was performed. Results revealed that quantitatively the most affected petrographic constituent is pyrite and that organic matter and carbonate were also altered by weathering. Due to this process of weathering, the bulk composition of organic matter, especially the molecular composition of soluble organic matter and the fluorescence color of organic particles, are changed. Estimates of weathering rates reveal that the annual release of sulfur and organic carbon from black shales may significantly add to anthropogenic pollution.

Littke, R.; Klussmann, U.; Krooss, B.; Leythaeuser, D. (Inst. fuer Erdoel und organische Geochemie, Juelich (West Germany))

1991-11-01T23:59:59.000Z

305

Domain formation due to surface steps in topological insulator Bi{sub 2}Te{sub 3} thin films grown on Si (111) by molecular beam epitaxy  

SciTech Connect (OSTI)

The atomic structure of topological insulators Bi{sub 2}Te{sub 3} thin films on Si (111) substrates grown in van der Waals mode by molecular beam epitaxy has been investigated by in situ scanning tunneling microscopy and scanning transmission electron microscopy. Besides single and multiple quintuple layer (QL) steps, which are typical for the step-flow mode of growth, a number of 0.4 QL steps is observed. We determine that these steps originate from single steps at the substrate surface causing domain boundaries in the Bi{sub 2}Te{sub 3} film. Due to the peculiar structure of these domain boundaries the domains are stable and penetrate throughout the entire film.

Borisova, S.; Kampmeier, J.; Mussler, G.; Grtzmacher, D. [Peter Grnberg Institute-9, Forschungszentrum Jlich, Jlich 52425 (Germany) [Peter Grnberg Institute-9, Forschungszentrum Jlich, Jlich 52425 (Germany); Jlich Aachen Research Alliance, Fundamentals of Future Information Technologies, Jlich 52425 (Germany); Luysberg, M. [Peter Grnberg Institute-5 and Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jlich, Jlich 52425 (Germany)] [Peter Grnberg Institute-5 and Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jlich, Jlich 52425 (Germany)

2013-08-19T23:59:59.000Z

306

Irradiation hardening and loss of ductility of type 316L(N) stainless steel plate material due to neutron-irradiation  

SciTech Connect (OSTI)

Type 316 stainless steel is the primary candidate austenitic structural material for fusion first wall constructions. Here, type 316L(N) stainless steel plate material has been irradiated up to 10 dpa at temperatures of 80, 225, 325, and 425 C in the High Flux Reactor (HFR) of Petten. Tensile tests have been performed in the temperature range from RT to 575 C at a conventional strain rate of 5 {times} 10{sup {minus}4} s{sup {minus}1}. The results of the tensile tests are analyzed in terms of irradiation hardening and loss of ductility due to irradiation. Tensile properties saturate in the early stage (within 0.65 dpa) at the lowest applied irradiation temperature. It is indicated that the most severe degradation of tensile ductility occurs in the temperature range of 275 to 350 C. Comparison with literature data revealed a large scatter in irradiation hardening at irradiation temperatures above 325 C.

Horsten, M.G.; Vries, M.I. de [Netherlands Energy Research Foundation, Petten (Netherlands)

1996-12-31T23:59:59.000Z

307

POET: A Model for (P)lanetary (O)rbital (E)volution due to (T)ides on Evolving Stars  

E-Print Network [OSTI]

We make publicly available an efficient, versatile, easy to use and extend tool for calculating the evolution of circular aligned planetary orbits due to the tidal dissipation in the host star. This is the first model to fully account for the evolution of the angular momentum of the stellar convective envelope by the tidal coupling, the transfer of angular momentum between the stellar convective and radiative zones, the effects of the stellar evolution on the tidal dissipation efficiency and stellar core and envelope spins, the loss of stellar convective zone angular momentum to a magnetically launched wind and frequency dependent tidal dissipation. This is only a first release and further development is under way to allow calculating the evolution of inclined and eccentric orbits, with the latter including the tidal dissipation in the planet and its feedback on planetary structure. Considerable effort has been devoted to providing extensive documentation detailing both the usage and the complete implementati...

Penev, Kaloyan; Jackson, Brian

2014-01-01T23:59:59.000Z

308

EPR Line Shifts and Line Shape Changes Due to Spin Exchange of Nitroxide-Free Radicals in Liquids 4. Test of a Method to Measure Re-Encounter Rates in Liquids Employing 15N  

E-Print Network [OSTI]

ARTICLES EPR Line Shifts and Line Shape Changes Due to Spin Exchange of Nitroxide-Free Radicals, California 91330 ReceiVed: NoVember 9, 2007; In Final Form: December 16, 2007 EPR line shifts due to spin, respectively. Nonlinear least-squares fits of the EPR spectra yielded the resonance fields of the nitrogen

Bales, Barney

309

Reduction of transient diffusion from 1{endash}5 keV Si{sup +} ion implantation due to surface annihilation of interstitials  

SciTech Connect (OSTI)

The reduction of transient enhanced diffusion (TED) with reduced implantation energy has been investigated and quantified. A fixed dose of 1{times}10{sup 14} cm{sup {minus}2} Si{sup +} was implanted at energies ranging from 0.5 to 20 keV into boron doping superlattices and enhanced diffusion of the buried boron marker layers was measured for anneals at 810, 950, and 1050{degree}C. A linearly decreasing dependence of diffusivity enhancement on decreasing Si{sup +} ion range is observed at all temperatures, extrapolating to {approximately}1 for 0 keV. This is consistent with our expectation that at zero implantation energy there would be no excess interstitials from the implantation and hence no TED. Monte Carlo modeling and continuum simulations are used to fit the experimental data. The results are consistent with a surface recombination length for interstitials of {lt}10 nm. The data presented here demonstrate that in the range of annealing temperatures of interest for p-n junction formation, TED is reduced at smaller ion implantation energies and that this is due to increased interstitial annihilation at the surface. {copyright} {ital 1997 American Institute of Physics.}

Agarwal, A.; Gossmann, H.-.; Eaglesham, D.J.; Pelaz, L.; Jacobson, D.C. [Bell Laboratories, Lucent Technologies, 600 Mountain Avenue, Murray Hill, New Jersey 07974 (United States)] [Bell Laboratories, Lucent Technologies, 600 Mountain Avenue, Murray Hill, New Jersey 07974 (United States); Haynes, T.E. [Oak Ridge National Laboratory, MS-6048, P.O. Box 2008, Oak Ridge, Tennessee 37831 (United States)] [Oak Ridge National Laboratory, MS-6048, P.O. Box 2008, Oak Ridge, Tennessee 37831 (United States); Erokhin, Y.E. [Eaton Corporation, 108 Cherry Hill Drive, Beverly, Massachusetts 01950 (United States)] [Eaton Corporation, 108 Cherry Hill Drive, Beverly, Massachusetts 01950 (United States)

1997-11-01T23:59:59.000Z

310

Measured Impact on Space Conditioning Energy Use in a Residence Due to Operating a Heat Pump Water Heater inside the Conditioned Space  

SciTech Connect (OSTI)

The impact on space conditioning energy use due to operating a heat pump water heater (HPWH) inside the conditioned space is analyzed based on 2010-2011 data from a research house with simulated occupancy and hot water use controls. The 2700 ft2 (345 m2) house is located in Oak Ridge, TN (mixed-humid climate) and is equipped with a 50 gallon (189 l) HPWH that provided approximately 55 gallons/d (208 l/d) of hot water at 120 F (46 C) to the house during the test period. The HPWH has been operated every other week from December 2010 through November 2011 in two modes; a heat pump only mode, and a standard mode that utilizes 15355 Btu/hr (4500 W) resistance heating elements. The energy consumption of the air-source heat pump (ASHP) that provides space conditioning for the house is compared for the two HPWH operating modes with weather effects taken into account. Impacts during the heating and cooling seasons are compared.

Munk, Jeffrey D [ORNL] [ORNL; Ally, Moonis Raza [ORNL] [ORNL; Baxter, Van D [ORNL] [ORNL

2012-01-01T23:59:59.000Z

311

Is the Long-Term Persistency of Circular Polarisation due to the Constant Helicity of the Magnetic Fields in Rotating Quasar Engines?  

E-Print Network [OSTI]

Many compact radio sources like quasars, blazars, radio galaxies, and micro-quasars emit circular polarisation (CP) with surprising temporal persistent handedness. We propose that the CP is caused by Faraday conversion of linear polarisation synchrotron light which propagates along a line-of-sight through helical magnetic fields. Jet outflows from radio galaxies should have the required magnetic helicity in the emission region due to the magnetic torque of the accretion disc. Also advection dominated accretion flow (ADAF) should contain magnetic fields with the same helicity. However, a jet region seems to be the more plausible origin of CP. The proposed scenario requires Faraday rotation (FR) to be insignificant in the emission region. The proposed mechanism works in electron-positron e+/e- as well as electron-proton e/p plasma. In the latter case, the emission region should consist of individual flux tubes with independent polarities in order to suppress too strong FR - as it was already proposed for FR based CP generation models. The predominant CP is expected to mostly counter-rotate (rotation is measured here in sky-projection) with respect to the central engine in all cases (jet or ADAF, e+/e- or e/p plasma) and therefore allows to measure the sense of rotation of quasar engines. The engine of SgrA* is expected - in this scenario - to rotate clockwise and therefore counter-Galactic, as do the young hot stars in its vicinity, which are thought to feed SgrA* by their winds. Generally, sources with Stokes-V0) are expected to rotate clockwise

Torsten A. Ensslin

2003-05-09T23:59:59.000Z

312

Treatment of resonances in the scattering of a heavy positron by H{sub 2} that are due to interaction with vibrationally excited quasibound states  

SciTech Connect (OSTI)

For a positron with wave number k, the rate of annihilation when scattered by an atom or molecule is proportional to Z{sub eff}(k), the effective number of electrons in the target that are available to the positron for annihilation. There is currently great interest in the very large positron annihilation rates, and hence values of Z{sub eff}(k), that have been observed in low-energy positron scattering by some molecules. These are observed experimentally to occur at energies just below the energies of excited vibrational states of the molecule concerned. This has been explained by Gribakin [Phys. Rev. A 61, 022720 (2000)] and Gribakin and Lee [Phys. Rev. Lett. 97, 193201 (2006)] as being due to Feshbach resonances involving excited quasibound vibrational states. These treatments make skilful use of approximate methods. It is of interest to determine how the expression obtained for the resonant contribution to Z{sub eff}(k) from a quasibound state using a very accurate method is related to the expressions obtained in the previously mentioned articles. In view of this, in this article I carry out a detailed ab initio theoretical treatment of positron scattering by H{sub 2} using the Kohn variational method. H{sub 2} is the simplest molecule, which makes it easier to take into account all the interactions involved. However, a positron does not form a bound state with H{sub 2}. To investigate resonant behavior in Z{sub eff}(k), I increase the mass m{sub p} of the positron so that it forms a weakly bound state with H{sub 2}. This gives rise to excited quasibound vibrational states. The expression I obtain for the resonant contribution to Z{sub eff}(k) has some similarity with the expressions obtained by Gribakin and Lee. This gives some support to their explanation of the very large values of Z{sub eff}(k). However, they make no explicit mention of corrections to the Born-Oppenheimer (BO) approximation. These play a key role in my treatment as they couple the quasibound states to the continuum. I am able to show how the BO corrections are taken into account implicitly in calculating the expressions obtained by Gribakin and Lee. The most important difference between my treatment and their treatments is that in my treatment Z{sub eff}(k) may be infinite at the resonant energy, whereas in the other treatments it is likely to be large, but can never be infinite. Further investigation is necessary to determine the origin of this infinity in my treatment. My treatment could be applied to positron scattering by molecules such as methyl halides in which very high Z{sub eff}(k) values are observed, though using the Kohn variational method would be considerably more complicated than in the case of H{sub 2}.

Armour, E. A. G. [School of Mathematical Sciences, University of Nottingham, Nottingham NG7 2RD (United Kingdom)

2010-10-15T23:59:59.000Z

313

A cascaded model of spectral distortions due to spectral response effects and pulse pileup effects in a photon-counting x-ray detector for CT  

SciTech Connect (OSTI)

Purpose: Energy discriminating, photon-counting detectors (PCDs) are an emerging technology for computed tomography (CT) with various potential benefits for clinical CT. The photon energies measured by PCDs can be distorted due to the interactions of a photon with the detector and the interaction of multiple coincident photons. These effects result in distorted recorded x-ray spectra which may lead to artifacts in reconstructed CT images and inaccuracies in tissue identification. Model-based compensation techniques have the potential to account for the distortion effects. This approach requires only a small number of parameters and is applicable to a wide range of spectra and count rates, but it needs an accurate model of the spectral distortions occurring in PCDs. The purpose of this study was to develop a model of those spectral distortions and to evaluate the model using a PCD (model DXMCT-1; DxRay, Inc., Northridge, CA) and various x-ray spectra in a wide range of count rates. Methods: The authors hypothesize that the complex phenomena of spectral distortions can be modeled by: (1) separating them into count-rate independent factors that we call the spectral response effects (SRE), and count-rate dependent factors that we call the pulse pileup effects (PPE), (2) developing separate models for SRE and PPE, and (3) cascading the SRE and PPE models into a combined SRE+PPE model that describes PCD distortions at both low and high count rates. The SRE model describes the probability distribution of the recorded spectrum, with a photo peak and a continuum tail, given the incident photon energy. Model parameters were obtained from calibration measurements with three radioisotopes and then interpolated linearly for other energies. The PPE model used was developed in the authors previous work [K. Taguchi et al., Modeling the performance of a photon counting x-ray detector for CT: Energy response and pulse pileup effects, Med. Phys. 38(2), 10891102 (2011)]. The agreement between the x-ray spectra calculated by the cascaded SRE+PPE model and the measured spectra was evaluated for various levels of deadtime loss ratios (DLR) and incident spectral shapes, realized using different attenuators, in terms of the weighted coefficient of variation (COV{sub W}), i.e., the root mean square difference weighted by the statistical errors of the data and divided by the mean. Results: At low count rates, when DLR < 10%, the distorted spectra measured by the DXMCT-1 were in agreement with those calculated by SRE only, with COV{sub W}'s less than 4%. At higher count rates, the measured spectra were also in agreement with the ones calculated by the cascaded SRE+PPE model; with PMMA as attenuator, COV{sub W} was 5.6% at a DLR of 22% and as small as 6.7% for a DLR as high as 55%. Conclusions: The x-ray spectra calculated by the proposed model agreed with the measured spectra over a wide range of count rates and spectral shapes. The SRE model predicted the distorted, recorded spectra with low count rates over various types and thicknesses of attenuators. The study also validated the hypothesis that the complex spectral distortions in a PCD can be adequately modeled by cascading the count-rate independent SRE and the count-rate dependent PPE.

Cammin, Jochen, E-mail: jcammin1@jhmi.edu, E-mail: ktaguchi@jhmi.edu; Taguchi, Katsuyuki, E-mail: jcammin1@jhmi.edu, E-mail: ktaguchi@jhmi.edu [Division of Medical Imaging Physics, The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287 (United States)] [Division of Medical Imaging Physics, The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287 (United States); Xu, Jennifer [Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland 21287 (United States)] [Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland 21287 (United States); Barber, William C.; Iwanczyk, Jan S.; Hartsough, Neal E. [DxRay, Inc., Northridge, California 91324 (United States)] [DxRay, Inc., Northridge, California 91324 (United States)

2014-04-15T23:59:59.000Z

314

The Fifth Workshop on HPC Best Practices: File Systems and Archives  

E-Print Network [OSTI]

and the concept of preventive maintenance. This has resultedavailability and reliability. [1] [2] Preventive MaintenancePreventive maintenance, in the sense of avoiding unscheduled

Hick, Jason

2013-01-01T23:59:59.000Z

315

RECENT PROCESS AND EQUIPMENT IMPROVEMENTS TO INCREASE HIGH LEVEL WASTE THROUGHPUT AT THE DEFENSE WASTE PROCESSING FACILITY  

SciTech Connect (OSTI)

The Savannah River Site's (SRS) Defense Waste Processing Facility (DWPF) began stabilizing high level waste (HLW) in a glass matrix in 1996. Over the past few years, there have been several process and equipment improvements at the DWPF to increase the rate at which the high level waste can be stabilized. These improvements have either directly increased waste processing rates or have desensitized the process to upsets, thereby minimizing downtime and increasing production. Improvements due to optimization of waste throughput with increased HLW loading of the glass resulted in a 6% waste throughput increase based upon operational efficiencies. Improvements in canister production include the pour spout heated bellows liner (5%), glass surge (siphon) protection software (2%), melter feed pump software logic change to prevent spurious interlocks of the feed pump with subsequent dilution of feed stock (2%) and optimization of the steam atomized scrubber (SAS) operation to minimize downtime (3%) for a total increase in canister production of 12%. A number of process recovery efforts have allowed continued operation. These include the off gas system pluggage and restoration, slurry mix evaporator (SME) tank repair and replacement, remote cleaning of melter top head center nozzle, remote melter internal inspection, SAS pump J-Tube recovery, inadvertent pour scenario resolutions, dome heater transformer bus bar cooling water leak repair and new Infra-red camera for determination of glass height in the canister are discussed.

Odriscoll, R; Allan Barnes, A; Jim Coleman, J; Timothy Glover, T; Robert Hopkins, R; Dan Iverson, D; Jeff Leita, J

2008-01-15T23:59:59.000Z

316

Math 100 --Matlab Assignment 1, due at the end of class on Sept.2, 2010 In order to save both your commands and their output while working in the Command window  

E-Print Network [OSTI]

Math 100 -- Matlab Assignment 1, due at the end of class on Sept.2, 2010 In order to save both your file (a simple text file that you can view with any text editor, such as the Matlab Editor). Before you start doing any of the following assignments do the following: · Make sure you know Matlab's "Current

Fasshauer, Greg

317

lthough proportional-integral-derivative (PID) controllers are widely used in the process indus-try, their effectiveness is often limited due to poor tuning. The manual tuning of PID controllers,  

E-Print Network [OSTI]

A lthough proportional-integral-derivative (PID) controllers are widely used in the process indus- try, their effectiveness is often limited due to poor tuning. The manual tuning of PID controllers, and it is not desirable to open the process loop for system identifica- tion. Thus, a method for tuning PID parameters

Krstic, Miroslav

318

EPS Conf. on Contr. Fusion and Plasma Physics, Maastricht, 14 -18 June 1999 ECA Vol.23J (1999) 949 -952 Regeneration of Wave Perturbation in the Ionosphere due to Plasma  

E-Print Network [OSTI]

a powerful radio wave from a Earth- based radio transmitter,operating in the high frequency (HF) range) 949 - 952 949 Regeneration of Wave Perturbation in the Ionosphere due to Plasma Kinetic Effects University, EURATOM/NFR Fusion Association, S -755 91 Uppsala, Sweden 2 Institute for Nuclear Research

319

Runs 5 through 7 were stopped prematurely due to the fact that the PET product severely plugged the vent to the condenser. These were also completed after several modifications to the autoclave setup  

E-Print Network [OSTI]

Runs 5 through 7 were stopped prematurely due to the fact that the PET product severely plugged modifications did not cause the plug. Conclusions Qualitatively, the objective was for the PET to be clear of the runs were varying degrees of yellow indicating that the PET began to degrade in the autoclave

320

AME 514 -Applications of Combustion -Spring 2013 Homework #3 Due Friday 4/5/13, 4:30 pm in the drop box in OHE 430N (Xerox room). If you're off  

E-Print Network [OSTI]

AME 514 - Applications of Combustion - Spring 2013 ­ Homework #3 Due Friday 4/5/13, 4:30 pm · Joulin, G., Sivashinsky, G. I. (1994). Combust. Sci. Technol. 98, 11-23. Theoretical description of flames in Hele-Shaw cells. · Yoshida, A. (1988). Proc. Combust. Inst. 22, 1471-1478. Very good

Note: This page contains sample records for the topic "unscheduled downtime due" 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

Opportunities, Barriers and Actions for Industrial Demand Response in California  

SciTech Connect (OSTI)

In 2006 the Demand Response Research Center (DRRC) formed an Industrial Demand Response Team to investigate opportunities and barriers to implementation of Automated Demand Response (Auto-DR) systems in California industries. Auto-DR is an open, interoperable communications and technology platform designed to: Provide customers with automated, electronic price and reliability signals; Provide customers with capability to automate customized DR strategies; Automate DR, providing utilities with dispatchable operational capability similar to conventional generation resources. This research began with a review of previous Auto-DR research on the commercial sector. Implementing Auto-DR in industry presents a number of challenges, both practical and perceived. Some of these include: the variation in loads and processes across and within sectors, resource-dependent loading patterns that are driven by outside factors such as customer orders or time-critical processing (e.g. tomato canning), the perceived lack of control inherent in the term 'Auto-DR', and aversion to risk, especially unscheduled downtime. While industry has demonstrated a willingness to temporarily provide large sheds and shifts to maintain grid reliability and be a good corporate citizen, the drivers for widespread Auto-DR will likely differ. Ultimately, most industrial facilities will balance the real and perceived risks associated with Auto-DR against the potential for economic gain through favorable pricing or incentives. Auto-DR, as with any ongoing industrial activity, will need to function effectively within market structures. The goal of the industrial research is to facilitate deployment of industrial Auto-DR that is economically attractive and technologically feasible. Automation will make DR: More visible by providing greater transparency through two-way end-to-end communication of DR signals from end-use customers; More repeatable, reliable, and persistent because the automated controls strategies that are 'hardened' and pre-programmed into facility's software and hardware; More affordable because automation can help reduce labor costs associated with manual DR strategies initiated by facility staff and can be used for long-term.

McKane, Aimee T.; Piette, Mary Ann; Faulkner, David; Ghatikar, Girish; Radspieler Jr., Anthony; Adesola, Bunmi; Murtishaw, Scott; Kiliccote, Sila

2008-01-31T23:59:59.000Z

322

All-optical control in metal nanocomposites due to a reversible transition between the local-field-enhancement and a local-field-depression upon irradiation by ultrashort control-pulses of light  

E-Print Network [OSTI]

We theoretically study on non-perturbative effective nonlinear responses of metal nanocomposites based on the intrinsic third-order nonlinear response of metal nanoparticles. The large intrinsic third-order nonlinear susceptibility of metal nanoparticles and an irradiation by ultrashort control pulse of light with a sufficiently high peak intensity and moderate fluence can induce a local-field-depression and a saturated plasmon-bleaching in metal nanoparticles. If the control pulse is on, the metal nanocomposites can behave like a dielectric due to the local-field-depression, while if the control pulse is off, the metal nanocomposites can behave like a metal showing a high absorption due to the local-field-enhancement at the plasmon-resonance. This phenomenon can be applied to an ultrafast and remote control of light in metal nanocomposites.

Im, Song-Jin

2014-01-01T23:59:59.000Z

323

SUBSIDENCE DUE TO GEOTHERMAL FLUID WITHDRAWAL  

E-Print Network [OSTI]

Environmental Effects of Geothermal Power Production, 11the potential use of geothermal energy for power generationlargest producer of geothermal electric power in the world.

Narasimhan, T.N.

2013-01-01T23:59:59.000Z

324

Programming Assignment 1: Due Monday, Sept. 19  

E-Print Network [OSTI]

'm using vim. You may want to edit on a different machine and copy to water, but keep in mind that you'll need a fast edit-compile-execute path. Or you can try vim, too. 09/08/2011" CS4961" #12;

Hall, Mary W.

325

SUBSIDENCE DUE TO GEOTHERMAL FLUID WITHDRAWAL  

E-Print Network [OSTI]

the potential use of geothermal energy for power generation47. Boldizsar, T. , 1970, "Geothermal energy production fromCoast Geopressure Geothermal Energy Conference, M.H. Dorfman

Narasimhan, T.N.

2013-01-01T23:59:59.000Z

326

MODELING SUBSIDENCE DUE TO GEOTHERMAL FLUID PRODUCTION  

E-Print Network [OSTI]

compaction, computers, geothermal energy, pore-waterf o r developing geothermal energy i n the United States (Applications o f Geothermal Energy and t h e i r Place i n t

Lippmann, M.J.

2011-01-01T23:59:59.000Z

327

Cosmic Background Radiation Due to Photon Condensation  

E-Print Network [OSTI]

It is shown that a collection of photons with nearly the same frequency exhibits a Bose "condensation" type of phenomenon at about 3 degrees K corresponding to a peak intensity at a wave length of about 0.4cm. This could give a mechanism for the observed Cosmic Background Radiation, and also explain some curious features.

B. G. Sidharth

1998-06-10T23:59:59.000Z

328

Inadvertent Climate Modification Due to Anthropogenic Lead  

SciTech Connect (OSTI)

The relationship between atmospheric particulate matter and the formation of clouds is among the most uncertain aspects of our current understanding of climate change1. One specific question that remains unanswered is how anthropogenic particulate emissions are affecting the nucleation of ice crystals. Satellites show ice clouds cover more than a third of the globe2 and models suggest that ice nucleation initiates the majority of terrestrial precipitation3. It is therefore not possible to adequately understand either climate change or the global water cycle without understanding ice nucleation. Here we show that lead-containing particles are among the most efficient ice nucleating substances commonly found in the atmosphere. Field observations were conducted with mass spectrometry and electron microscopy at two remote stations on different continents, far removed from local emissions. Laboratory studies within two cloud chambers using controlled experimental conditions support the field data. Because the dominate sources of particulate lead are anthropogenic emissions such as aviation fuel, power generation, smelting, and the re-suspension of residue from tetra-ethyl leaded gasoline4, it is likely that cloud formation and precipitation have been affected when compared to pre-industrial times. A global climate model comparing pre-industrial and anthropogenically perturbed conditions shows that lead-containing particles may be increasing the outgoing longwave radiation by 0.2 to 0.8 W m-2, thereby offsetting a portion of the warming attributed to greenhouse gases1.

Cziczo, Daniel J.; Stetzer, Olaf; Worringen, Annette; Ebert, Martin; Weinbruch, Stephan; Kamphus, M.; Gallavardin, S. J.; Curtius, J.; Borrmann, S.; Froyd, Karl D.; Mertes, S.; Mohler, Ottmar; Lohmann, U.

2009-05-01T23:59:59.000Z

329

SUBSIDENCE DUE TO GEOTHERMAL FLUID WITHDRAWAL  

E-Print Network [OSTI]

the potential use of geothermal energy for power generationCoast Geopressure Geothermal Energy Conference, M.H. Dorfmanand Otte, C. , 1976, Geothermal energy-resources production,

Narasimhan, T.N.

2013-01-01T23:59:59.000Z

330

EXTERNAL AWARDS AWARDS WEBSITE Due Date  

E-Print Network [OSTI]

.trudeaufoundation.ca Jan PHD #12;AUCC - DND - Masters of Arts www.aucc.ca 1 Feb M AUCC - DND - SDF Aboriginal Scholarship www.aucc.ca 1 Feb M Aboriginal AUCC - DND - SDF Internship Program www.aucc.ca 1 Feb PhD AUCC - DND - SDF PhD Scholarship incl. Dr Ronald Baker Doctoral Scholarship www.aucc.ca 1 Feb PhD AUCC - DND - SDF

Northern British Columbia, University of

331

Problem Set 1 Due October 1, 2013  

E-Print Network [OSTI]

correlation with it. You should be sure that the width of your filter is at least six sigma, to fully capture. The function should take as input an image and a value for sigma that will be used to smooth the image. You may the Gaussian. For example, if sigma is 1, you might use a filter that has a length of 7 (the first odd number

Jacobs, David

332

SUBSIDENCE DUE TO GEOTHERMAL FLUID WITHDRAWAL  

E-Print Network [OSTI]

measurements in geothermal wells," Proceedings, Secondin Larderello Region geothermal wells for reconstruction of

Narasimhan, T.N.

2013-01-01T23:59:59.000Z

333

Analytic approximate radiation effects due to Bremsstrahlung  

SciTech Connect (OSTI)

The purpose of this note is to provide analytic approximate expressions that can provide quick estimates of the various effects of the Bremsstrahlung radiation produced relatively low energy electrons, such as the dumping of the beam into the beam stop at the ERL or field emission in superconducting cavities. The purpose of this work is not to replace a dependable calculation or, better yet, a measurement under real conditions, but to provide a quick but approximate estimate for guidance purposes only. These effects include dose to personnel, ozone generation in the air volume exposed to the radiation, hydrogen generation in the beam dump water cooling system and radiation damage to near-by magnets. These expressions can be used for other purposes, but one should note that the electron beam energy range is limited. In these calculations the good range is from about 0.5 MeV to 10 MeV. To help in the application of this note, calculations are presented as a worked out example for the beam dump of the R&D Energy Recovery Linac.

Ben-Zvi I.

2012-02-01T23:59:59.000Z

334

Visualization Contest Applications due August 3  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500IIVasudhaSurface. | EMSL Visiblegov Materials|GuidelinesE

335

2012 NERSC allocation requests due September 23  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICS H. I. Park, L.2State of Matter |2 NERSC

336

2013 Allocation Request Submissions Due September 28  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICS H. I. Park,October 2013Agenda Print banner33

337

2013 INCITE Proposals due June 27  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICS H. I. Park,October 2013Agenda3ReportINCITE

338

2014 INCITE Call for Proposals - Due  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICS H.Carbon Storage R&Dfront cover:INCITE

339

2014 NERSC allocation requests due September 22  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICS H.Carbon Storage R&Dfront14 Page 1 of

340

2015 NERSC allocation requests due September 22  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICS H.CarbonMarch 2015 Mon,Energy 55 LUG EC5

Note: This page contains sample records for the topic "unscheduled downtime due" 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

MODELING SUBSIDENCE DUE TO GEOTHERMAL FLUID PRODUCTION  

E-Print Network [OSTI]

Applications o f Geothermal Energy and t h e i r Place i n tcompaction, computers, geothermal energy, pore-waterf o r developing geothermal energy i n the United States (

Lippmann, M.J.

2011-01-01T23:59:59.000Z

342

Applications for ACTS Workshop Due June 24  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication Acceleration on CurrentPDSLin toSC14

343

Potential oxidative stress due to Pb exposure  

E-Print Network [OSTI]

The hazards of Pb exposure has been a topic of concern for many years. This research was developed to investigate the possibility of Pb induced oxidative stress. The research objectives were to observe Pb induced lipid peroxidation and Pb induced...

Elms, Rene' Davina

2013-02-22T23:59:59.000Z

344

special thanks are due: Ana Begoa Armengod  

E-Print Network [OSTI]

advertising- whether simply using the standard horizontal rectangle as a springboard for messaging-carved prints, illustrates a hardly imaginary, bleak landscape where pollutants permeate national and class a humorous approach, such as Colin Matthes' bold, sardonic "Gladiator" advertisement for a portable border

Shewchuk, Jonathan

345

Problems #3, Math 204, Dr. M. Bohner. Sep 10, 2003. Due Sep 15, 11 am. 12. A tank has ten gallons of water in which two pounds of salt has been dissolved. Brine with  

E-Print Network [OSTI]

Problems #3, Math 204, Dr. M. Bohner. Sep 10, 2003. Due Sep 15, 11 am. 12. A tank has ten gallons through the supplementary homework problems for Chapters 1­2: 1, 3 of Section 1.1; 1 of Section 1.2; 1-8, 14, 15, 17, 19, 21, 25, 26 of Section 1.3; 1, 3, 4, 13­17, 21, 26, 29 of Section 2.1; 1, 4­8, 9, 11

Bohner, Martin

346

Iron production maintenance effectiveness system  

SciTech Connect (OSTI)

In 1989, an internal study in the Coke and Iron Maintenance Department identified the opportunities available to increase production, by decreasing unscheduled maintenance delays from 4.6%. A five year front loaded plan was developed, and presented to the company president. The plan required an initial investment of $1.4 million and a conservative break-even point was calculated to be 2.5 years. Due to budget restraints, it would have to be self-funded, i.e., generate additional production or savings, to pay for the program. The program began in 1991 at number 2 coke plant and the blast furnaces. This paper will describe the Iron Production Maintenance Effectiveness System (ME), which began with the mechanical and pipefitting trades.

Augstman, J.J. [Dofasco Inc., Hamilton, Ontario (Canada)

1996-12-31T23:59:59.000Z

347

High Flux Isotope Reactor quarterly report, January-March 1986  

SciTech Connect (OSTI)

Four routine cycles of operation were completed during the first quarter. Four scheduled end-of-cycle shutdowns and two unscheduled shutdowns resulted in an on-stream time of 86.9%. An unscheduled control plate and control cylinder replacement was performed after tantalum contamination in the primary coolant system was traced to the inner cylinder.

Corbett, B.L.; Farrar, M.B.

1986-06-01T23:59:59.000Z

348

aars forskning om: Topics by E-print Network  

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

to reduce service down-time. Most industrial applications have chosen pessimistic logging because Garg, Vijay 98 Lindstr"om theorems for fragments of first-order logic...

349

arbejdsgruppen om afbraending: Topics by E-print Network  

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

to reduce service down-time. Most industrial applications have chosen pessimistic logging because Garg, Vijay 71 Lindstr"om theorems for fragments of first-order logic...

350

analyse om relationerne: Topics by E-print Network  

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

to reduce service down-time. Most industrial applications have chosen pessimistic logging because Garg, Vijay 79 Lindstr"om theorems for fragments of first-order logic...

351

NETL Researcher Honored with 2013 Federal Laboratory Consortium...  

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

reduce shutdowns and downtime, and reduce the risk and cost of equipment damage. The 3D virtual energy plant simulator is available to third parties for internal training...

352

NETL Researcher Honored with 2013 Federal Laboratory Award Morgantown...  

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

reduce shutdowns and downtime, and reduce the risk and cost of equipment damage. The 3D virtual energy plant simulator is available to third parties for internal training...

353

SILVER--2003 68.1 References that include a section mark () are found in the Internet  

E-Print Network [OSTI]

reduction in byproduct silver generated at copper mines. Downtime at Kennecott Utah Copper Corp.'s Bingham Canyon Mine reduced productio

354

March 30, 2010  

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

30 March 30 PDSF Users Meeting 33010 Cluster status: Utilization has been fairly light. STAR needs more data. Outages: Discussed the outage last Wednesday. Upcoming downtimes:...

355

The development and implementation of a production information collection and reporting system  

E-Print Network [OSTI]

Production information, which includes production counts and line downtime information, is of great importance for automobile assembly plants to diagnose equipment problems and improve line utilization. Outdated information ...

Liu, Haitao, 1975-

2004-01-01T23:59:59.000Z

356

America's Next Top Energy Innovator Runner-Up Presents Hydrogen...  

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

gas. The refinery capacity has always been a premium and down time in the oil and gas industry is always costly. Keeping equipment running and minimizing downtime is...

357

Probabilistic analysis and operational data in response to NUREG-0737, Item II. K. 3. 2 for Westinghouse NSSS plants. [Modifications to reduce LOCA due to stuck-open power-operated relief valve  

SciTech Connect (OSTI)

This report describes various modifications to Westinghouse plants since TMI and, using probabilistic analysis via event trees, estimates the effect of the post-TMI changes, including an automatic (PORV) (power operated relief valve) isolation concept identified in NUREG-0731 item II.K.3.1. The requested safety valve operational data is included as an appendix. A significant reduction in the frequency of a small break LOCA, due to a stuck open PORV has already been achieved by the modifications made subsequent to TMI. Domestic Westinghouse operating plant data (based on 181 reactor years of operation) has been collected and evaluated. An auto block valve closure system has been evaluated. The analysis is generally applicable to all Westinghouse plants which have incorporated the post-TMI hardware and procedural changes relative to stuck-open PORVs.

Wood, D.C.; Gottshall, C.L.

1981-02-01T23:59:59.000Z

358

Persistent fibrosis in the liver of choline-deficient and iron-supplemented L-amino acid-defined diet-induced nonalcoholic steatohepatitis rat due to continuing oxidative stress after choline supplementation  

SciTech Connect (OSTI)

Nonalcoholic steatohepatitis (NASH) is characterized by combined pathology of steatosis, lobular inflammation, fibrosis, and hepatocellular degeneration, with systemic symptoms of diabetes or hyperlipidemia, all in the absence of alcohol abuse. Given the therapeutic importance and conflicting findings regarding the potential for healing the histopathologic features of NASH in humans, particularly fibrosis, we investigated the reversibility of NASH-related findings in Wistar rats fed a choline-deficient and iron-supplemented L-amino acid-defined (CDAA) diet for 12 weeks, with a recovery period of 7 weeks, during which the diets were switched to a choline-sufficient and iron-supplemented L-amino acid-defined (CSAA) one. Analysis showed that steatosis and inflammation were significantly resolved by the end of the recovery period, along with decreases in AST and ALT activities within 4 weeks. In contrast, fibrosis remained even after the recovery period, to an extent similar to that in continuously CDAA-fed animals. Real-time reverse transcriptase-polymerase chain reaction, Western blot, and immunohistochemical investigations revealed that expression of some factors indicating oxidative stress (CYP2E1, 4-HNE, and iNOS) were elevated, whereas catalase and SOD1 were decreased, and a hypoxic state and CD34-positive neovascularization were evident even after the recovery period, although the fibrogenesis pathway by activated ?-SMA-positive hepatic stellate cells via TGF-? and TIMPs decreased to the CSAA group level. In conclusion, persistent fibrosis was noted after the recovery period of 7 weeks, possibly due to sustained hypoxia and oxidative stress supposedly caused by capillarization. Otherwise, histopathological features of steatosis and inflammation, as well as serum AST and ALT activities, were recovered. - Highlights: ? NASH-like liver lesions are induced in rats by feeding a CDAA diet. ? Steatosis and lobular inflammation are resolved after switching to a CSAA diet. ? Fibrosis is sustained, possibly due to continuing hypoxia and oxidative stress.

Takeuchi-Yorimoto, Ayano, E-mail: ayano.takeuchi@astellas.com [Drug Safety Research Labs, Astellas Pharma Inc., Osaka 532-8514 (Japan); Noto, Takahisa [Drug Safety Research Labs, Astellas Pharma Inc., Osaka 532-8514 (Japan); Yamada, Atsushi [Drug Safety Research Division, Astellas Research Technologies Co., Ltd., Osaka 532-8514 (Japan); Miyamae, Yoichi; Oishi, Yuji; Matsumoto, Masahiro [Drug Safety Research Labs, Astellas Pharma Inc., Osaka 532-8514 (Japan)

2013-05-01T23:59:59.000Z

359

DUE DILIGENCE CHECKLIST Page 1 of 2 What is the standard of due diligence?  

E-Print Network [OSTI]

.g. Lockout, WHMIS) r Inspection reports and records of corrective actions taken to solve problems r Incident, lockout, bloodborne pathogens, confined space, falls from elevation, chemical hazards, repetitive strain

Northern British Columbia, University of

360

Long Duration Testing of Type C Thermocouples at 1500 C  

SciTech Connect (OSTI)

Experience with Type C thermocouples operating for long periods in the 1400 to 1600 C temperature range indicate that significant decalibration occurs, often leading to expensive downtime and material waste. As part of an effort to understand the mechanisms causing drift in these thermocouples, the Idaho National Laboratory conducted a long duration test at 1500 C containing eight Type C thermocouples. As report in this document, results from this long duration test were adversely affected due to oxygen ingress. Nevertheless, results provide key insights about the impact of precipitate formation on thermoelectric response. Post-test examinations indicate that thermocouple signal was not adversely impacted by the precipitates detected after 1,000 hours of heating at 1,500 C and suggest that the signal would not have been adversely impacted by these precipitates for longer durations (if oxygen ingress had not occurred in this test).

Joy L. Rempe; Darrell L. Knudson; J. E. Daw; S. C. Wilkins

2008-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "unscheduled downtime due" 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.


361

Advanced Testing Techniques to Measure the PWSCC Resistance of Alloy 690 and its Weld Metals  

SciTech Connect (OSTI)

Wrought Alloy 600 and its weld metals (Alloy 182 and Alloy 82) were originally used in pressurized water reactors (PWRs) due to the material's inherent resistance to general corrosion in a number of aggressive environments and because of a coefficient of thermal expansion that is very close to that of low alloy and carbon steel. Over the last thirty years, stress corrosion cracking in PWR primary water (PWSCC) has been observed in numerous Alloy 600 component items and associated welds, sometimes after relatively long incubation times. The occurrence of PWSCC has been responsible for significant downtime and replacement power costs. As part of an ongoing, comprehensive program involving utilities, reactor vendors and engineering/research organizations, this report will help to ensure that corrosion degradation of nickel-base alloys does not limit service life and that full benefit can be obtained from improved designs for both replacement components and new reactors.

P.Andreson

2004-10-01T23:59:59.000Z

362

Machine Protection: Availability for Particle Accelerators  

E-Print Network [OSTI]

Machine availability is a key indicator for the performance of the next generation of particle accelerators. Availability requirements need to be carefully considered during the design phase to achieve challenging objectives in different fields, as e.g. particle physics and material science. For existing and future High-Power facilities, such as ESS (European Spallation Source) and HL-LHC (High-Luminosity LHC), operation with unprecedented beam power requires highly dependable Machine Protection Systems (MPS) to avoid any damage-induced downtime. Due to the high complexity of accelerator systems, finding the optimal balance between equipment safety and accelerator availability is challenging. The MPS architecture, as well as the choice of electronic components, have a large influence on the achievable level of availability. In this thesis novel methods to address the availability of accelerators and their protection systems are presented. Examples of studies related to dependable MPS architectures are given i...

Apollonio, Andrea; Schmidt, Ruediger

2015-03-16T23:59:59.000Z

363

Industrial applications of corrosion-resistant tantalum, niobium, and their alloys  

SciTech Connect (OSTI)

(During the period 1960-1982, tantalum, niobium, and their alloys have become increasingly important in industrial applications where superior corrosion resistance is required. These materials are particularly attractive when selected on the basis of ''life cycle costing''. This takes into account initial cost, levels of product quality, length of trouble-free operation, and any increase in productivity due to reduced downtime and lower maintenance requirements.) The chemical process industry, in particular, has taken advantage of these materials for processing mineral acids at temperatures and concentrations higher than can be withstood by any other materials. Advances in electron-beam melting technology have also made it possible to manufacture larger and cleaner ingots, resulting in the availability to industry of larger sheets, tubes, and plates with improved property reliability.

Burns, R.H.; Manning, P.E.; Shuker, F.S.

1982-09-01T23:59:59.000Z

364

SPEAR III: A brighter source at SSRL  

SciTech Connect (OSTI)

By replacing the magnets and vacuum chamber for the 3 GeV SPEAR II storage ring, the natural emittance of the machine can be reduced from 130 to 18 nm-rad and the stored current can be raised from 100 to 200 mA with a 50 h lifetime. This configuration increases focused photon flux for insertion device beamlines by an order of magnitude and the photon brightness for future undulators would exceed 10{sup 18} at 5 keV. Due to a higher critical energy, the photon flux in the 20 keV range for bending magnet beamlines increases by more than two orders of magnitude. We present preliminary SPEAR III design study results and plans to implement the facility upgrade with minimal downtime for SSRL users.

Hettel, R.; Boyce, R.; Brennan, S. [and others

1997-06-02T23:59:59.000Z

365

Corrosion of Chromium-Rich Oxide Refractories in Molten Waste Glasses  

SciTech Connect (OSTI)

The DOE is faced with a wide variety of waste treatment problems throughout the complex. The diversity in physical, chemical, and radiological characteristics of these waste streams will necessitate an array of treatment technologies since, at present, there exists no single solution. Thermal treatment technologies have an important, but by no means singular, role to play in addressing this problem since they generally offer the potential for significant volume reductions, leach resistant waste forms, considerable versatility, and are relatively well developed. In particular, DOE has made significant investments in the development and deployment of vitrification technologies for the treatment of high-level nuclear wastes and, more recently, for mixed wastes. The general area of materials of construction is especially important for thermal processes due to the inherently high-temperature and the often-corrosive environments involved. The performance of these materials directly impacts treatment costs since this determines maintenance downtime and the useful service life of the treatment unit.

Hao Gan; Xiaodong Lu; Andrew C. Buechele; M. Catherine Paul; Ian L. Pegg

2002-03-20T23:59:59.000Z

366

A Framework to Identify the Sustainable and Resilient Zone of  

E-Print Network [OSTI]

and S6 are shown as example. Downtime in Days #12;Downtime and Cost of Mitigation #12;Avoided Cost Determine Mitigation Cost and Avoided Damage Perform EIOLCA on both Mitigation Cost and Damage Emissions? · Financial Perspective: ­ Approach: · Benefit : Cost Analysis ­ Tool: · FEMA BCA V4.8 Toolkit

Das, Suman

367

Computation of the free energy due to electron density fluctuation of a solute in solution: A QM/MM method with perturbation approach combined with a theory of solutions  

SciTech Connect (OSTI)

We developed a perturbation approach to compute solvation free energy ?? within the framework of QM (quantum mechanical)/MM (molecular mechanical) method combined with a theory of energy representation (QM/MM-ER). The energy shift ? of the whole system due to the electronic polarization of the solute is evaluated using the second-order perturbation theory (PT2), where the electric field formed by surrounding solvent molecules is treated as the perturbation to the electronic Hamiltonian of the isolated solute. The point of our approach is that the energy shift ?, thus obtained, is to be adopted for a novel energy coordinate of the distribution functions which serve as fundamental variables in the free energy functional developed in our previous work. The most time-consuming part in the QM/MM-ER simulation can be, thus, avoided without serious loss of accuracy. For our benchmark set of molecules, it is demonstrated that the PT2 approach coupled with QM/MM-ER gives hydration free energies in excellent agreements with those given by the conventional method utilizing the Kohn-Sham SCF procedure except for a few molecules in the benchmark set. A variant of the approach is also proposed to deal with such difficulties associated with the problematic systems. The present approach is also advantageous to parallel implementations. We examined the parallel efficiency of our PT2 code on multi-core processors and found that the speedup increases almost linearly with respect to the number of cores. Thus, it was demonstrated that QM/MM-ER coupled with PT2 deserves practical applications to systems of interest.

Suzuoka, Daiki; Takahashi, Hideaki, E-mail: hideaki@m.tohoku.ac.jp; Morita, Akihiro [Department of Chemistry, Graduate School of Science, Tohoku University, Sendai Miyagi 980-8578 (Japan)] [Department of Chemistry, Graduate School of Science, Tohoku University, Sendai Miyagi 980-8578 (Japan)

2014-04-07T23:59:59.000Z

368

Subsea Kick Detection on Floating Vessels: A Parametric Study  

E-Print Network [OSTI]

Well control in drilling operations is priority to personnel safety. Detection of kicks, or the unscheduled entry of formation fluids into the wellbore, is vital to well control. It has been determined that return flow rate is the parameter most...

Collette, Eric Peter

2013-07-22T23:59:59.000Z

369

Biennial Assessment of the Fifth Power Plan Transmission Issues  

E-Print Network [OSTI]

unscheduled electricity flows over transmission lines leading to increased risks to electric system by the partners in the Colstrip 500 kV transmission lines (Northwestern Energy, Puget Sound Energy, Portland

370

Fault Detection and Diagnosis in TurbineEngines using Fuzzy Logic  

E-Print Network [OSTI]

with in-flight shutdowns, delays and cancellations, unscheduled engine removals, and take-off aborts engine monitoring and diagnosis. First, many engine problems are not distinguishable or even visible

Gayme, Dennice

371

acquired hemophilia due: Topics by E-print Network  

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

12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 Acquired Dyslexia in Japanese: Implications for Reading Theory . Open Access Theses and Dissertations...

372

MATHEMATICAL FRAMEWORK FOR CURRENT DENSITY IMAGING DUE TO DISCHARGE OF  

E-Print Network [OSTI]

DEVICES By Jeehyun Lee Jin Keun Seo and Eung Je Woo IMA Preprint Series # 2099 ( February 2006 ) INSTITUTE, JIN KEUN SEO, AND EUNG JE WOO Abstract. Electro-muscular disruption (EMD) devices such as TASER M26, JIN KEUN SEO, AND EUNG

373

Failure of sheathed thermocouples due to thermal cycling  

SciTech Connect (OSTI)

Open circuit failures (up to 100%) in small-diameter thermocouples used in electrically heated nuclear fuel rod simulator prototypes during thermal cycling tests were investigated to determine the cause(s) of the failures. The experiments conducted to determine the relative effects of differential thermal expansion, wire size, grain size, and manufacturing technology are described. It was concluded that the large grain size and embrittlement which result from certain common manufacturing annealing and drawing procedures were a major contributing factor in the breakage of the thermocouple wires.

Anderson, R.L.; Ludwig, R.L.

1982-03-01T23:59:59.000Z

374

EART 265 Problem Set 3 Due Tues Feb 11, 2014  

E-Print Network [OSTI]

of the sound speed, the size of an air molecule, and the particle size. 3. Salt and sugar [M]. How much smaller are meant to use a diusing (and expensive) solute in liquid. Since heat is cheap, we will run preliminary

Nimmo, Francis

375

Seismic attenuation due to wave-induced flow  

E-Print Network [OSTI]

Jan 14, 2004 ... experiments, multiple scattering transfers energy from the coherent ...... [106] For unconsolidated sands and soils, the frame mod- uli (drained...

2004-01-03T23:59:59.000Z

376

AREAS OF GROUND SUBSIDENCE DUE TO GEO-FLUID WITHDRAWAL  

E-Print Network [OSTI]

Environmental Effects of Geothermal Power Production, PhaseEnvironmental Effects of Geothermal Power Production - Phaseof prospecting them for geothermal power: U N Conf. on new

Grimsrud, G. Paul

2011-01-01T23:59:59.000Z

377

accretion discs due: Topics by E-print Network  

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

the hole. Such a break in the disc may be significant in systems where we know the inclination of the outer accretion disc to the line of sight, such as some X-ray binaries: the...

378

Estimating the expected latency to failure due to manufacturing defects  

E-Print Network [OSTI]

Manufacturers of digital circuits test their products to find defective parts so they are not sold to customers. Despite extensive testing, some of their products that are defective pass the testing process. To combat this problem, manufacturers...

Dorsey, David Michael

2004-09-30T23:59:59.000Z

379

Geography 155, Latin American Geography Editorial Assignment Due March 2  

E-Print Network [OSTI]

, desertification, erosion, flooding, air, water, and soil pollution, agricultural intensification, use of ethanol to do with the research problem? Examples: peasant slash and burn agriculture, cattle ranching, mining

Lopez-Carr, David

380

Applications for Fraunhofer CSE Research Program due August 22  

Broader source: Energy.gov [DOE]

The Office of Energy Efficiency and Renewable Energy (EERE) is sponsoring a 1-year postdoctoral research position with the Fraunhofer Center for Sustainable Energy Systems (CSE) in Boston, MA.

Note: This page contains sample records for the topic "unscheduled downtime due" 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

Global tropospheric ozone modeling: Quantifying errors due to grid resolution  

E-Print Network [OSTI]

model-derived monthly climatologies [Tegen et al. , 1997],extent that the MODIS climatology does. [ 11 ] The standarduse the optional aerosol climatology. These simulations are

Wild, Oliver; Prather, Michael J

2006-01-01T23:59:59.000Z

382

Scheduling Trains and Containers with Due Dates and Dynamic Arrivals  

E-Print Network [OSTI]

. There is a fixed-charge transportation cost for each vehicle, and each vehicle has the same capacity. The cost to the destination which includes the cost of labor for the movement of the vehicle and any other costs. Newman Department of Industrial Engineering and Operations Research, University of California, Berkeley

383

332: 416 ---Project #4 Due Monday, April 26, 2004  

E-Print Network [OSTI]

to a Robot Arm and a Single­Link Robotic Manipulator with a Flexible Joint Part I. Consider the motor driven robot arm described by ?? ` = ! ?? ! = 0ff! 0\\Omega 2 sin (`) + fiu with the numerical data given by ff = 5; fi = 1;\\Omega 2 = 64 It is desired to control the robot arm to hold any reference (nominal

Gajic, Zoran

384

Math 110 Homework Assignment 9 due date: Nov. 12, 2012  

E-Print Network [OSTI]

question, and that's becuase it's a very good question. It's also a challenging question: it shouldn with a problem of this kind: Something new that you haven't seen before, but something within your powers'd like to know what the values of bn are for n = 2012, 2013, 2014, 2015, 2016, and 2017. So that's your

Roth, Mike

385

Cos' la Due Diligence e perch stata introdotta  

E-Print Network [OSTI]

'export del Camerun, della Romania, della Bosnia, dell'Albania, della Serbia,... #12;2-03-2013 3 Prevention Grecia Irlanda Italia Lettonia Lituania Olanda Polania Portogallo RegnoUnito RepublicaCeca Romania

Pettenella, Davide

386

Math 460: Homework # 5. Due Thursday September 25 Note ...  

E-Print Network [OSTI]

vertices, and let D, E, and F be the points where these lines meet AB, AC and ... Print out a copy of your picture, including the measurements and calculations. 3. (

2014-09-19T23:59:59.000Z

387

Math 460: Homework # 7. Due Thursday, October 16 1. (Use ...  

E-Print Network [OSTI]

It is not 9/25.) Print out a picture. 3. (In this problem we prove the fact that you demonstrated ... Prove that the area of ?AF D is 9/16 times the area of ?ABC. A. G.

2014-10-08T23:59:59.000Z

388

Math 460: Homework # 9. Due Thursday October 30 1. (Use ...  

E-Print Network [OSTI]

radius and Segment commands. Print out a copy. 3. (In this problem we prove ... are squares. To prove: the areas of the shaded triangles are all equal. H. D. G.

2014-10-26T23:59:59.000Z

389

Math 460: Homework # 3. Due Thursday, September 11 1. Use ...  

E-Print Network [OSTI]

Hide all the lines used in constructions (a)-(d). Print out a copy, then change the shape of the triangle and print another copy. The line through O and H has a.

2014-09-10T23:59:59.000Z

390

Math 460: Homework # 6. Due Tuesday October 7 1. (Use ...  

E-Print Network [OSTI]

Find this equation and print out a copy of the picture ... D. B. A. Figure 2. 6. (See Figure 3.) Prove that the bisectors of angles 1, 2 and 3 are concurrent. (Hint:.

2014-09-25T23:59:59.000Z

391

Math 460: Homework # 4 due Thursday September18 1. (Use ...  

E-Print Network [OSTI]

Print out a picture showing this equation. (Hint: the equation ... 3. Let ABC be a triangle and let D and E be points on the segments AC and BC, respectively, with

2014-09-17T23:59:59.000Z

392

Math 460: Homework # 8. Due Thursday, October 23 1. (Use ...  

E-Print Network [OSTI]

do you notice about the points X, Y, and Z? Print out a picture, then change the ... D. G. N. P. M. A. B. C. Figure 2. 4. (See Figure 3.) Prove that. A B. A C. B C. B A.

2014-10-16T23:59:59.000Z

393

atrial fibrillation due: Topics by E-print Network  

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

in space-time diagrams. The maximum extension of the top of the jets is lowest in the umbra, a few 100 km, and progressively longer further away from the umbra in the penumbra,...

394

Analytical determination of propeller performance degradation due to ice accretion  

E-Print Network [OSTI]

. B. Recent Work 1. Experimental Effort Researchers involved in the renewed study of ice accretion recognized the need to expand the quite limited experimental data base, especially to include tests of ice accretion on the newer airfoils designed... with finite trailing edge angles by avoiding any cusp a the trailing edge. It is given by the formu'la z=nb I 1 (zI+b)" - (zl-b)n where z is a vector which may define some profile such as an. airfoil section, and zI is a vector from the origin, 0, to some...

Miller, Thomas Lloyd

1984-01-01T23:59:59.000Z

395

COMP 335 Programming Languages Fall 2011 Due Date: October 4  

E-Print Network [OSTI]

program file names should end with .c. · All of your programs should be written in ANSI C. You can use any is as follows: gcc -ansi Ccw.c -o Ccw where ­ gcc = gnu c compiler ­ -ansi = ANSI flag which denotes standard C

Gousie, Michael B.

396

Statistical Power-Law Spectra due to Reservoir Fluctuations  

E-Print Network [OSTI]

LHC ALICE data are interpreted in terms of statistical power-law tailed pT spectra. As explanation we derive such statistical distributions for particular particle number fluctuation patterns in a finite heat bath exactly, and for general thermodynamical systems in the subleading canonical expansion approximately. Our general result, $q = 1 - 1/C + \\Delta T^2 / T^2$, demonstrates how the heat capacity and the temperature fluctuation effects compete, and cancel only in the standard Gaussian approximation.

T. S. Bir; G. G. Barnafldi; P. Vn; K. rmssy

2014-04-04T23:59:59.000Z

397

Hot-Jupiter Inflation due to Deep Energy Deposition  

E-Print Network [OSTI]

Some extrasolar giant planets in close orbits---"hot Jupiters"---exhibit larger radii than that of a passively cooling planet. The extreme irradiation $L_{\\rm eq}$ these hot Jupiters receive from their close in stars creates a thick isothermal layer in their envelopes, which slows down their convective cooling, allowing them to retain their inflated size for longer. This is yet insufficient to explain the observed sizes of the most inflated planets. Some models invoke an additional power source, deposited deep in the planet's envelope. Here we present an analytical model for the cooling of such irradiated, and internally heated gas giants. We show that a power source $L_{\\rm dep}$, deposited at an optical depth $\\tau_{\\rm dep}$, creates an exterior convective region, between optical depths $L_{\\rm eq}/L_{\\rm dep}$ and $\\tau_{\\rm dep}$, beyond which a thicker isothermal layer exists, which in extreme cases may extend to the center of the planet. This convective layer, which occurs only for $L_{\\rm dep}\\tau_{\\r...

Ginzburg, Sivan

2015-01-01T23:59:59.000Z

398

Changes in soy flour protein solubilities due to heating  

E-Print Network [OSTI]

system (AACC, 1973). 27 TABLE 1 ~ EXTRACTION AND FRACTIONATION OF PROTEINS ACCCORDING TO LANDRY AND MOREAUX (SEQUENCE D) FR PROTEINS TEMPERATURE SOLVENT EXTRACTION TIME EXTRACTION 1 Globulins 4oC albumins 4oC 2 Prolamines 24oC 3 Disulfide 24 C...

Ordonez, Gloria Pilar

1984-01-01T23:59:59.000Z

399

Hindrance of heavy-ion fusion due to nuclear incompressibility  

E-Print Network [OSTI]

We propose a new mechanism to explain the unexpected steep falloff of fusion cross sections at energies far below the Coulomb barrier. The saturation properties of nuclear matter are causing a hindrance to large overlap of the reacting nuclei and consequently a sensitive change of the nuclear potential inside the barrier. We report in this letter a good agreement with the data of coupled-channels calculation for the {64}Ni+{64}Ni combination using the double-folding potential with M3Y-Reid effective N-N forces supplemented with a repulsive core that reproduces the nuclear incompressibility for total overlap.

S. Misicu; H. Esbensen

2006-02-22T23:59:59.000Z

400

Measuring Oscillatory Velocity Fields Due to Swimming Algae  

E-Print Network [OSTI]

In this fluid dynamics video, we present the first time-resolved measurements of the oscillatory velocity field induced by swimming unicellular microorganisms. Confinement of the green alga C. reinhardtii in stabilized thin liquid films allows simultaneous tracking of cells and tracer particles. The measured velocity field reveals complex time-dependent flow structures, and scales inversely with distance. The instantaneous mechanical power generated by the cells is measured from the velocity fields and peaks at 15 fW. The dissipation per cycle is more than four times what steady swimming would require.

Guasto, Jeffrey S; Gollub, J P

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "unscheduled downtime due" 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

Impacts on groundwater due to land application of sewage sludge  

SciTech Connect (OSTI)

The project was designed to demonstrate the potential benefits of utilizing sewage sludge as a soil conditioner and fertilizer on Sassafras sandy loam soil. Aerobically digested, liquid sewage sludge was applied to the soil at rates of 0, 22.4, and 44.8 Mg of dry solids/ha for three consecutive years between 1978 and 1981. Groundwater, soil, and crop contamination levels were monitored to establish the maximum sewage solids loading rate that could be applied without causing environmental deterioration. The results indicate that application of 22.4 Mg of dry solids/ha of sludge is the upper limit to ensure protection of the groundwater quality on the site studied. Application rates at or slightly below 22.4 Mg of dry solids/ha are sufficient for providing plant nutrients for the dent corn and rye cropping system utilized in the study.

Higgins, A.J.

1984-06-01T23:59:59.000Z

402

Homework I: Due 09/22/05 Prof. Bukiet  

E-Print Network [OSTI]

after 4 hours). Two hours after the bleeding stops, the infusion of blood and antibiotics is stopped such that half of a given amount infused into the bloodstream at a given instant remains 3 hours later.) 2. Take

Bukiet, Bruce

403

Attenuation of excitation decay rate due to collective effect  

E-Print Network [OSTI]

We study a series of $N$ oscillators each coupled to its nearest neighbours, and linearly to a phonon field through the oscillator's number operator. We show that the Hamiltonian of a pair of adjacent oscillators, or a dimer, within the series of oscillators can be transformed to a form in which they are collectively coupled to the phonon field as a composite unit. In the weak coupling and rotating-wave approximation, the system behaves effectively like the trilinear boson model in the one excitation subspace of the dimer subsystem. The reduced dynamics of the one excitation subspace of the dimer subsystem coupled weakly to a phonon bath is similar to that of a two-level system, with a metastable state against the vacuum. The decay constant of the subsystem is proportional to the dephasing rate of the individual oscillator in a phonon bath, attenuated by a factor that depends on site asymmetry, intersite coupling and the resonance frequency between the transformed oscillator modes, or excitons. As a result of the collective effect, the excitation relaxation lifetime is prolonged over the dephasing lifetime of an individual oscillator coupled to the same bath.

B. A. Tay

2014-08-26T23:59:59.000Z

404

Elliptic flow due to radiation in heavy-ion collisions  

E-Print Network [OSTI]

In this paper we demonstrate that radiation patterns could cause flow-like behaviour without any reference to hydrodynamic description. For that purpose we use a statistical ensemble of radiating dipoles, motivated by the investigation of the equivalent photon yield produced by decelerating charges. For the elliptic asymmetry factor we find a reasonable agreement with experimental data.

Bir, T S; Schram, Zs

2015-01-01T23:59:59.000Z

405

Elliptic flow due to radiation in heavy-ion collisions  

E-Print Network [OSTI]

In this paper we demonstrate that radiation patterns could cause flow-like behaviour without any reference to hydrodynamic description. For that purpose we use a statistical ensemble of radiating dipoles, motivated by the investigation of the equivalent photon yield produced by decelerating charges. For the elliptic asymmetry factor we find a reasonable agreement with experimental data.

T. S. Bir; M. Horvth; Zs. Schram

2015-03-23T23:59:59.000Z

406

Theory of Computation Due: 10/21/2014  

E-Print Network [OSTI]

A is recursive. Then there exists a TM MA that decides A such that · MA(M; x) = "Yes", if (M; x) A, · MA(M; x) = "No", if (M; x) / A. Consider the program D(M) that calls MA: 1: if MA(M; M) = "Yes" then 2: D(M) = "No"; 3: else 4: D(M) = "Yes"; 5: end if Now, consider D(D): · D(D) = "No", if MA(D; D) = "Yes". · D

Lyuu, Yuh-Dauh

407

Is electrospray emission really due to columbic forces?  

SciTech Connect (OSTI)

Electrospray ionization (ESI) is a widely adopted soft ionization method for mass spectroscopy (MS). In spite of the undeniable success of the technique, its mechanisms are difficult to be analytically modelled because the process is characterized by non-equilibrium conditions. The common belief is that the formation of gas-phase ions takes place at the apex of the Taylor cone via electrophoretic charging. The charge balance implies that a conversion of electrons to ions should occur at the metal-liquid interface of the injector needle. We have detected that the above description is based on unproved assumptions which are not consistent with the correct evaluation of the problem. The comparison between experiments performed under the usual geometry and observations obtained under symmetric field configurations suggests that the emitted droplets cannot be significantly charged or, at least, that any possible ionization mechanism is so poorly efficient to ensure that columbic forces cannot play a major role in jet formation, even in cases where the liquid consists of a solution of ionic species. Further work is required to clearly understand how ionization occurs in ESI-MS.

Aliotta, Francesco, E-mail: aliotta@ipcf.cnr.it; Ponterio, Rosina C.; Salvato, Gabriele; Vasi, Cirino [CNR-Istituto per i Processi Chimico-Fisici, Viale F. Stagno dAlcontres 37, I-98158 Messina (Italy); Calandra, Pietro [CNR-Istituto per lo Studio dei Materiali Nanostrutturati, via dei Taurini 19, I-00185 Roma (Italy); Pochylski, Mikolaj [Adam Mickiewicz University, Faculty of Physics, Umultowska 85, PL-62614 Poznan (Poland)

2014-09-15T23:59:59.000Z

408

atmospheric electrons due: Topics by E-print Network  

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

of Atmospheric Electrons Compared with Data from HEAT CiteSeer Summary: The GEANTFLUKA detector simulation and particle interaction package was used to develop a Monte Carlo...

409

Environmental Impacts Due to Fixed and Floating Offshore Wind Turbines.  

E-Print Network [OSTI]

??As has been the case for onshore wind systems, the environmental effects of offshore wind farms are expected to play an important part of the (more)

Brewer, Micah K

2012-01-01T23:59:59.000Z

410

Radiation due to Josephson oscillations in layered superconductors.  

SciTech Connect (OSTI)

We derive the power of direct radiation into free space induced by Josephson oscillations in intrinsic Josephson junctions of layered superconductors. We consider the superradiation regime for a crystal cut in the form of a thin slice parallel to the c axis. We find that the radiation correction to the current-voltage characteristic in this regime depends only on crystal shape. We show that at a large number of junctions oscillations are synchronized providing high radiation power and efficiency in the terahertz frequency range. We discuss the crystal parameters and bias current optimal for radiation power and crystal cooling.

Bulaevskii, L. N.; Koshelev, A. E.; Materials Science Division; LANL

2007-01-01T23:59:59.000Z

411

Nano-Scale Elastic Properties Due to Montmorillonite Water Adsorption  

E-Print Network [OSTI]

Smectites are an important group of clay minerals that experience swelling upon water adsorption. This paper uses molecular dynamics with the CLAYFF force field to simulate isothermal isobaric water adsorption of interlayer ...

Ebrahimi, Davoud

412

Sandia National Laboratories: Due Diligence on Lead Acid Battery...  

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

the lead acid batteries are processed and recycled legally under a regularly audited New Mexico hazardous waste management permit, Pollution Prevention (P2) was prompted to...

413

acute abdomen due: Topics by E-print Network  

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

hepatotoxicity is considered to be the cause of the diffuse liver uptake of 99m Tc-MDP. The mechanism of extraskeletal uptake of bone-seeking radiopharmaceuticals in...

414

acute cholangitis due: Topics by E-print Network  

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

hepatotoxicity is considered to be the cause of the diffuse liver uptake of 99m Tc-MDP. The mechanism of extraskeletal uptake of bone-seeking radiopharmaceuticals in...

415

acute hydrocephalus due: Topics by E-print Network  

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

hepatotoxicity is considered to be the cause of the diffuse liver uptake of 99m Tc-MDP. The mechanism of extraskeletal uptake of bone-seeking radiopharmaceuticals in...

416

acute pharyngitis due: Topics by E-print Network  

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

hepatotoxicity is considered to be the cause of the diffuse liver uptake of 99m Tc-MDP. The mechanism of extraskeletal uptake of bone-seeking radiopharmaceuticals in...

417

A study of temperature distributions due to conduction reservoir heating  

E-Print Network [OSTI]

of thermal conductivity with temperature. He showed this effect could be very important in considering a material such as oil shale, where the conductivity of the raw shale may be five times as great as that of the spent shale. Neglecting this variation... conduction model to investigate the in place heating of oil shale by hot gases forced through a fracture. The heat injection rate he considered is much less than would normally be employed for steam injection into permeable reservoirs and is only about...

Connaughton, Charles Richard

2012-06-07T23:59:59.000Z

418

Problem Set 3: Chemistry 223 DUE: Monday, November 11, 2013  

E-Print Network [OSTI]

temperature of 37o C? You must first calculate Hvap at 37o . iii) The heat of combustion of cane sugar is 3 of error? d) Which compound would yield more heat upon complete combustion in oxygen? Fall Term, 2014 #12;

Ronis, David M.

419

AREAS OF GROUND SUBSIDENCE DUE TO GEO-FLUID WITHDRAWAL  

E-Print Network [OSTI]

F i r s t Geopressured Geothermal Energy Conference: Austin,Environmental analysis for geothermal energy development inGroh, E.A. , 1966, Geothermal Energy P o t e n t i a l i n

Grimsrud, G. Paul

2011-01-01T23:59:59.000Z

420

Fibonacci numbers (HW due Thurs 10/16)  

E-Print Network [OSTI]

this with induction (Hmm, will it be PMI or PCI?). You'll need to show that for all n N, Pn holds true. So first to use PMI, what must you assume and then what must you show? 2. If you try to use PCI, what must you type of induction (PMI or PCI) you need. Once you've done all the work above, you should be able

Soderlund, Christina L.

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


421

Electric shock and elevated EMF levels due to triplen harmonics  

SciTech Connect (OSTI)

The increasing use of single phase rectifiers for electric power conversion in residential applications increases harmonic load on utility systems. Many papers have analyzed the effect of these loads on power quality and equipment loadability. However, there are two more critical concerns for harmonic loads served phase to neutral on multi-grounded wye systems. Triplen harmonics, particularly the third, add in the neutral and have little diversity between loads. The higher neutral currents may cause significant problems. Neutral to earth voltages will increase near the substations which could increase stray voltage complaints. The additional neutral current on three phase lines will elevate EMF levels especially in the fringe areas. This paper provides fundamental understanding of triplen harmonic influence on stray voltage and EMF related to multi-grounded wye electric distribution systems.

Tran, T.Q.; Conrad, L.E.; Stallman, B.K. [PSI Energy, Inc., Plainfield, IN (United States)] [PSI Energy, Inc., Plainfield, IN (United States)

1996-04-01T23:59:59.000Z

422

Policy and Law Section Assignment Due by April 8th  

E-Print Network [OSTI]

Write a 3-5 page essay (single spaced) in which you: · Summarize the environmental law and land policy: Will your biofuel production require the building of a biorefinery and therefore call for local government planning permits and state government pollution control approvals? Will your bioenergy production lead

Iglesia, Enrique

423

Problem Set 5: Chemistry 223 DUE: Friday, November 22, 2013  

E-Print Network [OSTI]

point is 327.4 C and the heat of fusion is 4770J/ mol. The heat capacity of liquid lead is CP(l)[J/K mol. The heat capacity of solid lead is: CP(s)[J/K mol] = 22. 13 + 0. 01172T + 0. 96 ? 105 T-2 . The melt- ing] = 32. 51 - 0. 00301T. a) Calculate the standard entropy of liquid lead at 500 C. b) Calculate the H

Ronis, David M.

424

Thermal neutron flux perturbation due to indium foils in water  

E-Print Network [OSTI]

press) 13. Axford, R. A. , and Day, G. M. , personnel communication. 14. Ritchie, R. H. , Thermal Neutron Flux De ression, Health Physics Division Annual Prog. Rep. July, 1958, ORNL-2806, p. 133. 27 i 5, Walker, J. V. , "The Measurement of Absolute... Fluxes in Water and Graphite, " 'ORNL- 2842, 204 (f959). ...

Stinson, Ronald Calvin

1961-01-01T23:59:59.000Z

425

aspiration syndrome due: Topics by E-print Network  

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

32 Female Leadership Raises Aspirations and Educational Attainment for Girls: A Policy Experiment in India MIT - DSpace Summary: Exploiting a randomized natural...

426

last updated 12/05/2013 Deliverable Quarter Due (Draft!)  

E-Print Network [OSTI]

Forecast Q3 2014 Draft Results of Flexibility and Balancing Analysis Q4 2014 Demand Forecast Updated Q4, forecasts and other inputs Ongoing Narratives on Power Planning Topics and Issues (RSAC) Identify Topics 2014 Load Forecast Updated Q4 2014 Conservation Supply Curves Updated Q4 2014 Conceptual Definition

427

Strategic Research Project Applications due: April 1, 2012  

E-Print Network [OSTI]

, B and C priority pathogens: http://www.niaid.nih.gov/topics/BiodefenseRelated/Biodefense/research/Pages/CatA.aspx NIAID Emerging and Reemerging Infectious Diseases: http://www.niaid.nih must comply with the NIH Grants Policy Statement, Cost Principles OMB Circulars: (http://grants.nih

428

Summer 2012 National Geothermal Academy: Applications Due February...  

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

Academy is proud to present an intensive summer course in all aspects of geothermal energy development and utilization, held at the University of Nevada, Reno campus. The...

429

Pounding and impact of base isolated buildings due to earthquakes  

E-Print Network [OSTI]

.3. Base isolation in both adjacent buildings.....................................................72 5. SUMMARY AND CONCLUSION.........................................................................85 5.1. Summary and scope of study... ..............................................................................................................................138 viii LIST OF TABLES TABLE Page 1.1 Survey of earlier research on pounding of buildings...............................................5 3.1 Adjacent building configurations used in this study...

Agarwal, Vivek Kumar

2005-08-29T23:59:59.000Z

430

Stresses in adhesive joints due to moisture sorption  

E-Print Network [OSTI]

) + independent variations bul, bu, bu, bv, bw, bw, 6w, bw, bql, e 2 6q2, 6P1, and 6p2 we obtain the following field equations: -N 1 -q =0 1 (a) N2 + q2 0 (b) -N -q +q =0 2 1 (c) a a ')e - ~22 ? ~21 - M, = ' (d) ? 5 1 h 1 -p =0 1 (e) -M2" = 0 lg a e...J e e = f 5 a c h n c As a further step consider the following non-dimensional quantities 18 and ND ue ? aue ND ye Te ND wl ? awl ND wZ = awZ ND x X c (35) whereby d 1 d 1 ? = ? = ? 0 dx c d ND c dx The non...

Jen, Ming-Hwa Robert

1980-01-01T23:59:59.000Z

431

AREAS OF GROUND SUBSIDENCE DUE TO GEO-FLUID WITHDRAWAL  

E-Print Network [OSTI]

F i r s t Geopressured Geothermal Energy Conference: Austin,Groh, E.A. , 1966, Geothermal Energy P o t e n t i a l i nV.E. , Jr. , 1972, Geothermal energy i n Washington: &

Grimsrud, G. Paul

2011-01-01T23:59:59.000Z

432

Long run changes in driver behavior due to variable tolls  

E-Print Network [OSTI]

Laurence R. Rilett (Chair of Committee) (Member............................................................................10 II BACKGROUND?????????????????????????12 INTRODUCTION........................................................................................12 PRICE ELASTICITY OF DEMAND..........................................................12...

Konduru, Karun K.

2004-09-30T23:59:59.000Z

433

Increased Upstream Ionization due to Formation of a Double Layer  

SciTech Connect (OSTI)

We report observations that confirm a theoretical prediction that formation of a current-free double layer in a plasma expanding into a chamber of larger diameter is accompanied by an increase in ionization upstream of the double layer. The theoretical model argues that the increased ionization is needed to balance the difference in diffusive losses upstream and downstream of the expansion region. In our expanding helicon source experiments, we find that the upstream plasma density increases sharply at the same antenna frequency at which the double layer appears.

Thakur, S. Chakraborty; Harvey, Z.; Biloiu, I. A.; Hansen, A.; Hardin, R. A.; Przybysz, W. S.; Scime, E. E. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315 (United States)

2009-01-23T23:59:59.000Z

434

Simulation of paraffin damage due to natural cooling in reservoirs  

E-Print Network [OSTI]

the well bore. The precipitated paraffin particles form a suspension with the reservoir fluids. The suspended solid particles tend to be carried towards the wellbore by the liquid stream. Some of these particles deposit in the pore spaces... that the rate of removal of suspended solids is equal to the concentration of suspended solids times a deposition coefficient. The deposition coefficient is obtained by fitting experimental data. This method, introduced by Iwasaki' in 1937 is widely used...

Peddibhotla, Sriram

1993-01-01T23:59:59.000Z

435

Computation of seismic attenuation and dispersion due to ...  

E-Print Network [OSTI]

Jun 23, 2006 ... Seismic attenuation and dispersion are numerically computed for synthetic porous materials that contain arbitrary amounts of mesoscopic-.

masson@localhost.localdomain (masson)

2006-07-08T23:59:59.000Z

436

All United Way Raffle Winners Identified, Pledge Forms Due Monday...  

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

Division, winners of the iPad minis, and to Todd Coates, IT Division, on winning the Apple iPad. Please remember: All United Way pledge forms should be submitted to Josh Cameron...

437

Problem Set 6 Feb 20, 2004 Due Feb 27, 2004  

E-Print Network [OSTI]

, c=advection speed) d) vt + rxvx + 1 2 2x2vxx = rv Black-Scholes PDE v(x, t)=stock option price, x=price of the option's underlying stock, t=time Constants: r=interest rate, = volatility of the underlying stock 2. (3 Sturm-Liouville problem covered by the theorem given in class). c) Taking the eigenvalues from

Phinney, E. Sterl

438

AREAS OF GROUND SUBSIDENCE DUE TO GEO-FLUID WITHDRAWAL  

E-Print Network [OSTI]

under alluvium. Unconsolidated Quaternary - alluvium and fanm. Typical profile: 0-180 m unconsolidated clay, silt. sand,normal faults. 3000 m. Unconsolidated alluvium underlain by

Grimsrud, G. Paul

2011-01-01T23:59:59.000Z

439

Reversal of Hugoniot locus for strong shocks due to radiation  

SciTech Connect (OSTI)

Shock Hugoniot can be used to express the response of a material to shocks, and the compression ratio of the shock can be determined by the Hugoiot locus. When the shock is strong, it will become radiating, and the radiation will affect the Hugoniot. The role of radiation on the Hugoniot condition is studied in the paper. For the radiative flux-dominated shocks, the radiative flux if large enough may render the structure of the shock Hugoniot locus totally different with the case for the pure hydrodynamic shock: the two branches with one in quadrant I and the other in quadrant III are reversed into two in quadrants IV and II, respectively, correspondingly the compression ratio may be larger than the limiting value ({gamma}+1)/({gamma}-1) for ideal gases with index {gamma}. For the radiative shock in which the radiative heat wave propagates supersonically, a threshold value for the net radiative flux to the preshock is also defined which determines whether the Hugoniot locus is reversed and the compression ratio exceeds the limiting value. Numerical results also verify the reversal of the Hugoniot locus of the shocks if the net radiative flux to the preshock exceeds the threshold value.

Li Jiwei; Li Jinghong; Meng Guangwei [Institute of Applied Physics and Computational Mathematics, Beijing 100094 (China)

2011-04-15T23:59:59.000Z

440

Digital ultrasonically encoded (DUE) optical focusing into random media  

E-Print Network [OSTI]

Focusing light into opaque random or scattering media such as biological tissue is a much sought-after goal for biomedical applications such as photodynamic therapy, optical manipulation, and photostimulation. However, focusing with conventional lenses is restricted to one transport mean free path in scattering media, limiting both optical penetration depth and resolution. Focusing deeper is possible by using optical phase conjugation or wavefront shaping to compensate for the scattering. For practical applications, wavefront shaping offers the advantage of a robust optical system that is less sensitive to optical misalignment. Here, the phase of the incident light is spatially tailored using a phase-shifting array to pre-compensate for scattering. The challenge, then, is to determine the phase pattern which allows light to be optimally delivered to the target region. Optimization algorithms are typically employed for this purpose, with visible particles used as targets to generate feedback. However, using th...

Tay, Jian Wei; Suzuki, Yuta; Wang, Lihong V

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "unscheduled downtime due" 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

IE316 Advanced Operations Research Techniques Due December 5, 2001  

E-Print Network [OSTI]

market (in $/ton) are: VEG1 VEG2 OIL1 OIL2 OIL3 January 110 120 130 110 115 February 130 130 110 90 115 that these stocks also exist at the end of June. Your model should determine how much of the various oils to buy must OIL3. Solve your model u

Ralphs, Ted

442

Periodic fluctuations in deep water formation due to sea ice  

E-Print Network [OSTI]

During the last ice age several quasi-periodic abrupt warming events took place. Known as Dansgaard-Oeschger (DO) events their effects were felt globally, although the North Atlantic experienced the largest temperature anomalies. Paleoclimate data shows that the fluctuations often occurred right after massive glacial meltwater releases in the North Atlantic and in bursts of three or four with progressively decreasing strengths. In this study a simple dynamical model of an overturning circulation and sea ice is developed with the goal of understanding the fundamental mechanisms that could have caused the DO events. Interaction between sea ice and the overturning circulation in the model produces self-sustained oscillations. Analysis and numerical experiments reveal that the insulating effect of sea ice causes the ocean to periodically vent out accumulated heat in the deep ocean into the atmosphere. Subjecting the model to idealized freshwater forcing mimicking Heinrich events causes modulation of the natural p...

Saha, Raj

2015-01-01T23:59:59.000Z

443

AREAS OF GROUND SUBSIDENCE DUE TO GEO-FLUID WITHDRAWAL  

E-Print Network [OSTI]

here, and the Raft River geothermal wells a r e located t oPROPERTIES OF RAFT RIVER GEOTHERMAL WELL CORES (from Stokerin the area of Geothermal wells rs a 9 square mile area with

Grimsrud, G. Paul

2011-01-01T23:59:59.000Z

444

CSC 2420S 2012, Assignment 2 Due: March 26  

E-Print Network [OSTI]

the convergence time. Essentially show that the locality gap is at most k. 3. Let w() be a monotone, normalized) without any reference to randomiza- tion. 5. Consider a constraint satisfaction problem CSP where each as to decide "with high probability" whether or not the CSP has a solution. Brute force search would result

Borodin, Allan

445

CALL FOR PAPERS & PRESENTATIONS Abstracts due by September 15, 2014  

E-Print Network [OSTI]

-of-way. Best practices and advances in technology for the inspection and maintenance of the railroad, security assurance, emergency preparedness and response Track 7: Energy Efficiency and Sustainability

Su, Xiao

446

Orbital precession due to central-force perturbations  

E-Print Network [OSTI]

We calculate the precession of Keplerian orbits under the influence of arbitrary central-force perturbations. Our result is in the form of a one-dimensional integral that is straightforward to evaluate numerically. We demonstrate the effectiveness of our formula for the case of the Yukawa potential. We obtain analytic results for potentials of the form V(r) = \\alpha r^n and V(r) = \\alpha \\ln(r/\\lambda) in terms of the hypergeometric function {_2F_1} (1/2-n/2,1-n/2; 2; e^2), where e is the eccentricity. Our results reproduce the known general relativistic (n=-3), constant force (n=1), and cosmological constant (n=2) precession formulas. Planetary precessions are often used to constrain the sizes of hypothetical new weak forces--our results allow for more precise, and often stronger, constraints on such proposed new forces.

Gregory S. Adkins; Jordan McDonnell

2007-02-02T23:59:59.000Z

447

Study finds radioactivity around Los Alamos largely due to natural...  

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

natural sources The study was subsequently peer reviewed externally by scientists at Colorado State University and internally within the Lab. December 10, 2008 Los Alamos National...

448

Permeability Reduction Due to Precipitation of Quartz under Nonisothermal Conditions  

SciTech Connect (OSTI)

Many problems concerning the origin and exploitation of geothermal reservoirs demonstrate the need for models of reactive-solute transport. Of particular interest to us is the coupling between dissolution/precipitation reactions and transient-flow behavior. In an effort to account for observed flow-rate reductions during experiments on samples of granite held in a temperature gradient (summarized at this meeting in 1981 by Moore and others), we examine the effect of quartz precipitation on fluid flow. Our results confirm earlier inerences that reactions responsible for porosity reduction were affected by kinetic factors. Although our results show substantial flow-rate reductions, we are unable to reproduce measured silica concentrations of the outlet fluid by considering the behavior of silica phases without regard for that of the feldspars and micas.

Keith, Laura A.; Delaney, Paul T.; Moore, Diane E.

1983-12-15T23:59:59.000Z

449

Formation Damage due to CO2 Sequestration in Saline Aquifers  

E-Print Network [OSTI]

Carbon dioxide (CO2) sequestration is defined as the removal of gas that would be emitted into the atmosphere and its subsequent storage in a safe, sound place. CO2 sequestration in underground formations is currently being considered to reduce...

Mohamed, Ibrahim Mohamed 1984-

2012-10-25T23:59:59.000Z

450

EAC Meeting Cancelled Due to Weather | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: TopEnergy DOEDealingVehicle1 Closing American Electric0-A2 GDFBIMeeting

451

Charge Transport Anisotropy Due to Grain Boundaries in Directionally  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New Substation SitesStandingtheir AtmosphericAnalysisVents Using1of MassSurfaces.

452

Protecting the Electric Grid from Increasingly Severe Weather Due to  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG |September 15,2015 | Department ofThatGrid3of Energy Protecting

453

SC11 Education Program Applications due July 31  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0 ResourceAwards SAGE Awards A(SAPC)SBC-CAT,Help TableOpenHick

454

ASCR Leadership Computing Challenge proposals due February 3  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre the Effects of Global Warming?8DepartmentNewslettersat ASCR

455

Effects of restraint on expansion due to delayed ettringite formation  

SciTech Connect (OSTI)

Delayed ettringite formation (DEF) is a chemical reaction that causes expansion in civil engineering structures. The safety level of such damaged structures has to be reassessed. To do this, the mechanical conditions acting on DEF expansions have to be analysed and, in particular, the variation of strength with expansion and the effect of restraint on the DEF expansion. This paper highlights several points: DEF expansion is isotropic in stress-free conditions, compressive stresses decrease DEF expansion in the direction subjected to restraint and lead to cracks parallel to the restraint, and expansion measured in the stress-free direction of restrained specimens is not modified. Thus restraint causes a decrease of the volumetric expansion and DEF expansion under restraint is anisotropic. Moreover, the paper examines the correlation between DEF expansion and concrete damage, providing data that can be used for the quantification of the effect of stresses on DEF induced expansion.

Bouzabata, Hassina [Universite de Toulouse, UPS, INSA, LMDC (Laboratoire Materiaux et Durabilite des Constructions), 135, avenue de Rangueil, F-31 077 Toulouse Cedex 04 (France); Laboratoire Materiaux et Durabilite des Constructions, Department of Civil Engineering, University of Constantine (Algeria); Multon, Stephane, E-mail: multon@insa-toulouse.fr [Universite de Toulouse, UPS, INSA, LMDC (Laboratoire Materiaux et Durabilite des Constructions), 135, avenue de Rangueil, F-31 077 Toulouse Cedex 04 (France); Sellier, Alain [Universite de Toulouse, UPS, INSA, LMDC (Laboratoire Materiaux et Durabilite des Constructions), 135, avenue de Rangueil, F-31 077 Toulouse Cedex 04 (France); Houari, Hacene [Laboratoire Materiaux et Durabilite des Constructions, Department of Civil Engineering, University of Constantine (Algeria)

2012-07-15T23:59:59.000Z

456

Fast Magnetic Reconnection Due to Anisotropic Electron Pressure  

E-Print Network [OSTI]

A new regime of fast magnetic reconnection with an out-of-plane (guide) magnetic field is reported in which the key role is played by an electron pressure anisotropy described by the Chew-Goldberger-Low gyrotropic equations of state in the generalized Ohm's law, which even dominates the Hall term. A description of the physical cause of this behavior is provided and two-dimensional fluid simulations are used to confirm the results. The electron pressure anisotropy causes the out-of-plane magnetic field to develop a quadrupole structure of opposite polarity to the Hall magnetic field and gives rise to dispersive waves. In addition to being important for understanding what causes reconnection to be fast, this mechanism should dominate in plasmas with low plasma beta and a high in-plane plasma beta with electron temperature comparable to or larger than ion temperature, so it could be relevant in the solar wind and some tokamaks.

Cassak, P A; Fermo, R L; Beidler, M T; Shay, M A; Swisdak, M; Drake, J F; Karimabadi, H

2015-01-01T23:59:59.000Z

457

Histomechanics of arteries due to altered mechanical forces  

E-Print Network [OSTI]

. Conversely, segments of artery that re-endothelialized re- tarrrcd tlreir abilitv to dnrease lhei?lian&ctcr to decreased flow. fvlalek aml Izuu&o [17] &le&n&&r&s&, &ai, ed the su&loth&&lial cell's ability to be, directly iuflueuccd by n&cchan- ical forces...

Bartsch, Heather Renee

2003-01-01T23:59:59.000Z

458

Summer 2012 National Geothermal Academy: Applications Due February 15 |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage »of Energy Strain Rate4 RecoveryJuly 1, 2013On-Board

459

Technology Solutions Case Study: Overcoming Comfort Issues Due to Reduced  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up from theDepartment of Energy TechnicalFlow Room Air Mixing | Department of

460

Protecting the Electric Grid from Increasingly Severe Weather Due to  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L dDepartment of Energy 0 DOE VehicleProposedof EnergyofClimate

Note: This page contains sample records for the topic "unscheduled downtime due" 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

Los Alamos STEM Challenge registration due April 12  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and Interfaces Sample6,LocalNuclearandplants willowsLos Alamos SchoolsLos

462

NERSC Initiative for Scientific Exploration proposals due May 31  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Opticalhttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gif Directorate -News, Jan

463

City of Due West, South Carolina (Utility Company) | Open Energy  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin:Energy InformationLakeWyoming

464

ASCR Leadership Computing Challenge (ALCC) proposals due February 1, 2013  

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

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

465

Investigation of induced thermal behavior due to simple tension  

E-Print Network [OSTI]

on the following pages follow the style f tl:, ~1 Z A u d F~h f Dun d t? 1 "1 L rM h 1 1 e t? e (, ". '1'1 ( I' i a 1 cooled u D & 11 . x C e n s io n, the Slew Contrae!. iOT O: ti. r mater 'ai Lreeoe pry Of el. SCTC e 1cl' y) re'CLraneu 'tile CC111pelr !turL 0 1... I-, I e I)) st i c to ]!lc! sLi r br }in vioi, ginrie it is pj)ac'pn tlia L tile ci ] c'ei s of the d!! To& m &lien and '. - . -& &c . . -, i ?!re a &" c:iiltr insir a I ly re 1) tr d, t} es ~;; i}. ' '. ) e ccnsid =res as t'ic in!i?})f'I !Sn v I...

Tenison, Larry Turner

2012-06-07T23:59:59.000Z

466

Injection Related Background due to the Transverse Feedback  

SciTech Connect (OSTI)

The background in the BaBar detector is especially high during injection, when most components are actually having reduced voltages. The situation is worse for the beam in High Energy Ring (HER) when the LER beam is present. It was found that the transverse feedback system plays an important role when stacking more charge on top of existing bunches. Lowering the feedback gain helped and it was realized later that the best scenario would be to gate off the feedback for only the one bunch, which got additional charge injected into it. The explanation is that the blown-up, but centered, original HER bunch plus the small injected off-axis bunch (each with half the charge) would stay in the ring if not touched, but the feedback system sees half the offset and wants to correct it, therefore disturbing and scraping the blown-up part.

Decker, F.J.; Akre, R.; Fisher, A.; Iverson, R.; Weaver, M.; /SLAC

2008-03-18T23:59:59.000Z

467

Comment on 'Air Emissions Due to Wind and Solar Power'  

SciTech Connect (OSTI)

Katzenstein and Apt investigate the important question of pollution emission reduction benefits from variable generation resources such as wind and solar. Their methodology, which couples an individual variable generator to a dedicated gas plant to produce a flat block of power, is, however, inappropriate. For CO{sub 2}, the authors conclude that variable generators ''achieve {approx}80% of the emission reductions expected if the power fluctuations caused no additional emissions.'' They find even lower NO{sub x} emission reduction benefits with steam injected gas turbines and a 2--4 times net increase in NO{sub x} emissions for systems with dry NO{sub x} control unless the ratio of energy from natural gas to variable plants is greater than 2:1. A more appropriate methodology, however, would find a significantly lower degradation of the emissions benefit than suggested by Katzenstein and Apt.

Mills, A.; Wiser, R.; Milligan, M.; O'Malley, M.

2009-01-01T23:59:59.000Z

468

RFPs Due for Statewide Wood Energy Cooperative Agreement  

Broader source: Energy.gov [DOE]

The U.S. Forest Service requests proposals for the 2014 Statewide Wood Energy Teams (SWET) Cooperative Agreement. The outcome anticipated under this funding mechanism will advance the United States...

469

RFPs Due for Hazardous Fuel Wood to Energy Grant  

Broader source: Energy.gov [DOE]

The U.S. Forest Service requests proposals for the 2014 Hazardous Fuel Wood to Energy (W2E) Grant. The outcome anticipated under this funding mechanism will advance the United States Department of...

470

asme om code: Topics by E-print Network  

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

to reduce service down-time. Most industrial applications have chosen pessimistic logging because Garg, Vijay 302 COMPUTER-AIDED OM DEV Ltd. uses a RoboCAT (Ro- Engineering...

471

Allocation Year 2014 Ends January 12  

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

AY15 runs from Tuesday, January 13, 2015 through Monday, January 11, 2016. To keep in mind: Scheduled System Downtimes: Edison will be down from 07:30 Tuesday January 13 until...

472

Improved Dragline Utilization  

E-Print Network [OSTI]

operator skill, decrease downtime and optimize the digging strategy of the machine. The training simulator is a TV model system which the trainee controls from simulated cab. Dragline instrumentation is achieved by a computer, a control/display console...

Keller, K. J.

1980-01-01T23:59:59.000Z

473

UCHC Competency Checklist: ORIENTATION to ED CHARTING (Pulsecheck) Position Title: Registered Nurse, JDH Employee Name: Unit: ED  

E-Print Network [OSTI]

password- Help Desk Signing charts: my charts Pulsecheck Password Display & Tool Bar Mail B. Main Tracking documentation errors Downtime F. Tool Bar Archives Mail Patient data Labels Visits Change view All G. Access

Oliver, Douglas L.

474

Completion of the ORNL Fuel Cycle Research and Development (FCR&D) Level 4 Milestone Sigma Team Off-Gas ORNL FT-14OR031202, MS# M4FT-14OR0312027, Support to PNNL Kr-85 Preliminary Optimization Study, due May 30, 2014  

SciTech Connect (OSTI)

This letter and attached emails document the completion of the FCR&D Level 4 milestone for the Sigma Team Off-Gas ORNL work package (FT-14OR031202), Support to PNNL Kr-85 Preliminary Optimization Study (M4FT-14OR0312027), due May 30, 2014. Support to this effort included providing a literature search and providing a significant number of reference documents covering more than 30 years of past work on Kr recovery, recovery system designs, and past cost analyses. In addition, ORNL provided support on several conference calls to establish an analysis approach for the current study and to review progress.

Jubin, Robert T. [ORNL] [ORNL

2014-05-30T23:59:59.000Z

475

Method and apparatus for steam mixing a nuclear fueled electricity generation system  

DOE Patents [OSTI]

A method and apparatus for improving the efficiency and performance of a nuclear electrical generation system that comprises the addition of steam handling equipment to an existing plant that results in a surprising increase in plant performance. More particularly, a gas turbine electrical generation system with heat recovery boiler is installed along with a micro-jet high pressure and a low pressure mixer superheater. Depending upon plant characteristics, the existing moisture separator reheater (MSR) can be either augmented or done away with. The instant invention enables a reduction in T.sub.hot without a derating of the reactor unit, and improves efficiency of the plant's electrical conversion cycle. Coupled with this advantage is a possible extension of the plant's fuel cycle length due to an increased electrical conversion efficiency. The reduction in T.sub.hot further allows for a surprising extension of steam generator life. An additional advantage is the reduction in erosion/corrosion of secondary system components including turbine blades and diaphragms. The gas turbine generator used in the instant invention can also replace or augment existing peak or emergency power needs. Another benefit of the instant invention is the extension of plant life and the reduction of downtime due to refueling.

Tsiklauri, Georgi V. (Richland, WA); Durst, Bruce M. (Kennewick, WA)

1996-01-01T23:59:59.000Z

476

Internal Technical Report, Summary of Raft River Supply and Injection System Operational History  

SciTech Connect (OSTI)

Asbestos-cement (Transite) pipe was installed at the Raft River Geothermal Area in the fall of 1975 and has been used extensively since. The pipe is used to transfer water from the well sites to the testing areas, reserve pits, and reinjection wells. The pipeline was designed to transport approximately 300 F water at 150 psi over a period of time for the present testing program and later, for the 5 MW(e) Raft River Pilot Plant. Numerous line failures have occurred since the original lines were installed. Due to the various causes of the line failures and the extensive downtime which has occurred because of them, further examination of Transite pipe is necessary to determine its future use as completion of the 5 MW(e) pilot plant approaches. The Conversion Technology and Engineering Branch has completed a preliminary study of the effects of S&I system transients on Transite pipe (re: OJD-7-79). Recommendations are proposed to conduct further studies and tests; however, no funding is presently available due to limitations in the budget for the 5 MW(e) pilot plant project. The Mechanical Design Branch is continuing design analysis in an effort to gather information to determine maximum warmup rates for the S&I system.

Walrath, L.F.

1980-01-01T23:59:59.000Z

477

Method and apparatus for improving the performance of a steam driven power system by steam mixing  

DOE Patents [OSTI]

A method and apparatus for improving the efficiency and performance of a steam driven power plant wherein addition of steam handling equipment to an existing plant results in a surprising increase in plant performance. For Example, a gas turbine electrical generation system with heat recovery boiler may be installed along with a micro-jet high pressure and a low pressure mixer superheater. Depending upon plant characteristics, the existing moisture separator reheater (MSR) can be either augmented or done away with. The instant invention enables a reduction in T.sub.hot without a derating of the reactor unit, and improves efficiency of the plant's electrical conversion cycle. Coupled with this advantage is a possible extension of the plant's fuel cycle length due to an increased electrical conversion efficiency. The reduction in T.sub.hot further allows for a surprising extension of steam generator life. An additional advantage is the reduction in erosion/corrosion of secondary system components including turbine blades and diaphragms. The gas turbine generator used in the instant invention can also replace or augment existing peak or emergency power needs. Another benefit of the instant invention is the extension of plant life and the reduction of downtime due to refueling.

Tsiklauri, Georgi V. (Richland, WA); Durst, Bruce M. (Kennewick, WA); Prichard, Andrew W. (Richland, WA); Reid, Bruce D. (Pasco, WA); Burritt, James (Virginia Beach, VA)

1998-01-01T23:59:59.000Z

478

Wind turbine reliability :understanding and minimizing wind turbine operation and maintenance costs.  

SciTech Connect (OSTI)

Wind turbine system reliability is a critical factor in the success of a wind energy project. Poor reliability directly affects both the project's revenue stream through increased operation and maintenance (O&M) costs and reduced availability to generate power due to turbine downtime. Indirectly, the acceptance of wind-generated power by the financial and developer communities as a viable enterprise is influenced by the risk associated with the capital equipment reliability; increased risk, or at least the perception of increased risk, is generally accompanied by increased financing fees or interest rates. This paper outlines the issues relevant to wind turbine reliability for wind turbine power generation projects. The first sections describe the current state of the industry, identify the cost elements associated with wind farm O&M and availability and discuss the causes of uncertainty in estimating wind turbine component reliability. The latter sections discuss the means for reducing O&M costs and propose O&M related research and development efforts that could be pursued by the wind energy research community to reduce cost of energy.

Walford, Christopher A. (Global Energy Concepts. Kirkland, WA)

2006-03-01T23:59:59.000Z

479

Applauding the performing seal  

SciTech Connect (OSTI)

Whether the culprit is a pump, valve, compressor, or flanged pipe connection, the end result is the same: process-fluid leakage damages the environment and is costly to operators, in terms of lost product, lost production due to downtime, and the replacement of damaged process equipment. Hard-to-handle fluids, such as abrasive slurries of coal and flyash, can damage the seals that contain them, allowing potentially harmful fluids to escape. Even more insidious is the often-invisible escape of volatile organic compounds (VOCs) from equipment that handles liquid petroleum, petroleum by-products and chemicals. This paper reports that seal manufacturers are using their ingenuity to minimize the escape of liquid and gaseous emissions. One approach uses the power of magnetic attraction to create a seal along a rotating pump shaft by positioning magnetic fluids there. Ferrofluidics Corp. starts by creating a magnetic fluid - essentially a colloidal suspension of ultrafine magnetic salts dispersed in a carrier fluid - which is then used as a liquid O-ring seal in conjunction with a mechanical seal. The seal apparatus consists of a doughnut-shaped sandwich (centered around the pump shaft), with a permanent magnet as the middle layer, and a washer of magnetically permeable material on either side.

Not Available

1992-03-01T23:59:59.000Z

480

Damage monitoring of refractory wall in a generic entrained-bed slagging gasification system  

E-Print Network [OSTI]

plant simulation model for emulation of real-time degradation monitoring. Keywords: entrained the conditions in the gasifier and the type of feedstock. Gasification-based electric power plants are now. Early detection of such damage is necessary to avert unscheduled shutdown of a gasification plant

Ray, Asok

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


481

Subj: Educational and General (E&G) Facility Support Provide an overview of Facility Operations, Maintenance, Repair and Renovation and Space  

E-Print Network [OSTI]

support, and, preventive and unscheduled maintenance of all building systems, with the exception of BAS Operations, Maintenance, Repair and Renovation and Space Management Procedures and Practices. KEY DEFINITIONS chambers, fume hoods, fixed seating, etc. are normally considered part of the building. Maintenance, repair

482

Microelectronics Reliability, Vol. 47, No. 12, pp. 1857-1864, December 2007 Life Cycle Cost Impact of Using Prognostic Health Management (PHM)  

E-Print Network [OSTI]

Microelectronics Reliability, Vol. 47, No. 12, pp. 1857-1864, December 2007 1 Life Cycle Cost , S. Ghelamc , P. Sandbornb , M. Gladec , B. Fouchera a EADS Corporate Research Center, 12 rue Pasteur that assumed unscheduled maintenance and fixed-interval scheduled maintenance were compared to the costs

Sandborn, Peter

483

University of Alaska Fairbanks Business Report  

E-Print Network [OSTI]

Routine Unscheduled PMI 258 5,879 2 1,604 B. Billing Summary by Work Code: July 1 December 31,777 7% PMI's $419,064 10% Urgent Callin's & Standby's (After hours) $12,814 0% $4,232,294 Maintenance & Repair 83% Renewal/ Replacement 7% PMI's 10% Urgent Callin's Standyby's 0% FS Business

Wagner, Diane

484

Page 1 of 9 MCP 670.1, Work Time Attendance  

E-Print Network [OSTI]

Policy and Procedure MCP 670.1, Work Time Attendance Effective/January 12, 2011 ABSTRACT: The purposePage 1 of 9 MCP 670.1, Work Time Attendance UC San Diego Health System UC San Diego Health System of unscheduled employee absences in the work force. RELATED POLICIES: UCSDHS MCP 786.1, "Timekeeping Policies

Gleeson, Joseph G.

485

Wind Turbine Gearbox Failure Modes - A Brief (Presentation)  

SciTech Connect (OSTI)

Wind turbine gearboxes are not always meeting 20-year design life. Premature failure of gearboxes increases cost of energy, turbine downtime, unplanned maintenance, gearbox replacement and rebuild, and increased warranty reserves. The problem is widespread, affects most Original Equipment Manufacturers, and is not caused by manufacturing practices. There is a need to improve gearbox reliability and reduce turbine downtime. The topics of this presentation are: GRC (Gearbox Reliability Collaborative) technical approach; Gearbox failure database; Recorded incidents summary; Top failure modes for bearings; Top failure modes for gears; GRC test gearbox; Bearing nomenclature; Test history; Real damage; Gear sets; Bearings; Observations; and Summary. 5 refs.

Sheng, S.; McDade, M.; Errichello, R.

2011-10-01T23:59:59.000Z

486

A GUIDE TO FUEL PERFORMANCE  

SciTech Connect (OSTI)

Heating oil, as its name implies, is intended for end use heating consumption as its primary application. But its identity in reference name and actual chemical properties may vary based on a number of factors. By name, heating oil is sometimes referred to as gas oil, diesel, No. 2 distillate (middle distillate), or light heating oil. Kerosene, also used as a burner fuel, is a No. 1 distillate. Due to the higher heat content and competitive price in most markets, No. 2 heating oil is primarily used in modern, pressure-atomized burners. Using No. 1 oil for heating has the advantages of better cold-flow properties, lower emissions, and better storage properties. Because it is not nearly as abundant in supply, it is often markedly more expensive than No. 2 heating oil. Given the advanced, low-firing rate burners in use today, the objective is for the fuel to be compatible and achieve combustion performance at the highest achievable efficiency of the heating systems--with minimal service requirements. Among the Oil heat industry's top priorities are improving reliability and reducing service costs associated with fuel performance. Poor fuel quality, fuel degradation, and contamination can cause burner shut-downs resulting in ''no-heat'' calls. Many of these unscheduled service calls are preventable with routine inspection of the fuel and the tank. This manual focuses on No. 2 heating oil--its performance, properties, sampling and testing. Its purpose is to provide the marketer, service manager and technician with the proper guidelines for inspecting the product, maintaining good fuel quality, and the best practices for proper storage. Up-to-date information is also provided on commercially available fuel additives, their appropriate use and limitations.

LITZKE,W.

2004-08-01T23:59:59.000Z

487

Remote Monitoring of the Structural Health of Hydrokinetic Composite Turbine Blades  

SciTech Connect (OSTI)

A health monitoring approach is investigated for hydrokinetic turbine blade applications. In-service monitoring is critical due to the difficult environment for blade inspection and the cost of inspection downtime. Composite blade designs have advantages that include long life in marine environments and great control over mechanical properties. Experimental strain characteristics are determined for static loads and free-vibration loads. These experiments are designed to simulate the dynamic characteristics of hydrokinetic turbine blades. Carbon/epoxy symmetric composite laminates are manufactured using an autoclave process. Four-layer composite beams, eight-layer composite beams, and two-dimensional eight-layer composite blades are instrumented for strain. Experimental results for strain measurements from electrical resistance gages are validated with theoretical characteristics obtained from in-house finite-element analysis for all sample cases. These preliminary tests on the composite samples show good correlation between experimental and finite-element strain results. A health monitoring system is proposed in which damage to a composite structure, e.g. delamination and fiber breakage, causes changes in the strain signature behavior. The system is based on embedded strain sensors and embedded motes in which strain information is demodulated for wireless transmission. In-service monitoring is critical due to the difficult environment for blade inspection and the cost of inspection downtime. Composite blade designs provide a medium for embedding sensors into the blades for in-situ health monitoring. The major challenge with in-situ health monitoring is transmission of sensor signals from the remote rotating reference frame of the blade to the system monitoring station. In the presented work, a novel system for relaying in-situ blade health measurements in hydrokinetic systems is described and demonstrated. An ultrasonic communication system is used to transmit sensor data underwater from the rotating frame of the blade to a fixed relay station. Data are then broadcast via radio waves to a remote monitoring station. Results indicate that the assembled system can transmit simulated sensor data with an accuracy of ±5% at a maximum sampling rate of 500 samples/sec. A power investigation of the transmitter within the blade shows that continuous max-sampling operation is only possible for short durations (~days), and is limited due to the capacity of the battery power source. However, intermittent sampling, with long periods between samples, allows for the system to last for very long durations (~years). Finally, because the data transmission system can operate at a high sampling rate for short durations or at a lower sampling rate/higher duty cycle for long durations, it is well-suited for short-term prototype and environmental testing, as well as long-term commercially-deployed hydrokinetic machines.

J.L. Rovey

2012-09-21T23:59:59.000Z

488

INVESTIGATION OF AMMONIA ADSORPTION ON FLY ASH DUE TO INSTALLATION OF SELECTIVE CATALYTIC REDUCTION SYSTEMS  

SciTech Connect (OSTI)

This report summarizes an investigation of the potential impacts associated with the utilization of selective catalytic reduction (SCR) systems at coal-fired power plants. The study was sponsored by the U.S. Department of Energy Emission Control By-Products Consortium, Dominion Generation, the University of Kentucky Center for Applied Energy Research and GAI Consultants, Inc. SCR systems are effective in reducing nitrogen oxides (NOx) emissions as required by the Clean Air Act (CAA) Amendments. However, there may be potential consequences associated with ammonia contamination of stack emissions and combustion by-products from these systems. Costs for air quality, landfill and pond environmental compliance may increase significantly and the marketability of ash may be seriously reduced, which, in turn, may also lead to increased disposal costs. The potential impacts to air, surface water, groundwater, ash disposal, ash utilization, health and safety, and environmental compliance can not be easily quantified based on the information presently available. The investigation included: (1) a review of information and data available from published and unpublished sources; (2) baseline ash characterization testing of ash samples produced from several central Appalachian high-volatile bituminous coals from plants that do not currently employ SCR systems in order to characterize the ash prior to ammonia exposure; (3) an investigation of ammonia release from fly ash, including leaching and thermal studies; and (4) an evaluation of the potential impacts on plant equipment, air quality, water quality, ash disposal operations, and ash marketing.

G.F. Brendel; J.E. Bonetti; R.F. Rathbone; R.N. Frey Jr.

2000-11-01T23:59:59.000Z

489

Morphodynamics Suriname River: study of mud transport and impact due to lowering the fairway channel:.  

E-Print Network [OSTI]

??inland transportation of goods. The artificial fairway channel provides entrance to the port of Paramaribo and Paranam. The motivation for this thesis project is the (more)

Loose, M.

2008-01-01T23:59:59.000Z

490

The nucleon thermal width due to pion-baryon loops and its contribution in Shear viscosity  

E-Print Network [OSTI]

In the real-time thermal field theory, the standard expression of shear viscosity for the nucleonic constituents is derived from the two point function of nucleonic viscous stress tensors at finite temperature and density. The finite thermal width or Landau damping is traditionally included in the nucleon propagators. This thermal width is calculated from the in-medium self-energy of nucleon for different possible pion-baryon loops. The dynamical part of nucleon-pion-baryon interactions are taken care by the effective Lagrangian densities of standard hadronic model. The shear viscosity to entropy density ratio of nucleonic component decreases with the temperature and increases with the nucleon chemical potential. However, adding the contribution of pionic component, total viscosity to entropy density ratio also reduces with the nucleon chemical potential when the mixing effect between pion and nucleon components in the mixed gas is considered. Within the hadronic domain, viscosity to entropy density ratio of ...

Ghosh, Sabyasachi

2015-01-01T23:59:59.000Z

491

Spectral anti-broadening due to four-wave mixing in optical fibers  

E-Print Network [OSTI]

We show that the four-wave mixing can restrict spectral broadening. This is a general physical phenomenon that occurs in one-dimensional systems of four wave packets that resonantly interact "2-to-2": $ \\omega_1+\\omega_2=\\omega_3+\\omega_4,\\; k_1+k_2=k_3+k_4$, when an annihilation of one pair of waves results in the creation of another pair. In addition, for this phenomenon to occur, the group velocities $C_1,C_2,C_3,C_4$ of the packets should be in a certain order: The extreme value (max or min) of the four group velocities should be in the same pair with the middle value of the remaining three, e.g. $C_1energy, momentum, and Manley-Rowe relations.

Alexander M. Balk

2015-02-08T23:59:59.000Z

492

CS 226 Computability Theory { Coursework Assignment 1 Due date: 12 March 2002  

E-Print Network [OSTI]

: A ! B be a function. De#12;ne g : P(A) ! P(B) by g(X) := f [X] := ff(a) j a 2 Xg for every X #18; A. Prove that f is injective if and only if g is injective. [5 marks] Question 2. Prove that #6; i#20;n 1 + 4i = 2n 2 + 3n + 1 for all n 2 N. [4 marks] Question 3. Prove or disprove the following statements

Berger, Ulrich

493

Quantification of Uncertainties Due to Opacities in a Laser-Driven Radiative-Shock Problem  

E-Print Network [OSTI]

......................................................................... 44 3.2 Introduction to Uncertain Parameters in Opacity Calculations ......................... 45 3.3 Analysis of Relevant Uncertain Data Used in the CRASH Code ..................... 45 3.3.1 Evaluation of Oscillator Strengths... with Adjusted Xenon Opacity .......... 71 5.1.3 Results Using Oscillator Strengths ............................................................ 80 5.1.4 Results Using Oscillator Strengths with Adjusted Xenon Opacity ........... 89 5.2 Results for the 1-D...

Hetzler, Adam C

2013-03-28T23:59:59.000Z

494

DEEP VADOSE ZONE CONTAMINATION DUE TO RELEASES FROM HANFORD SITE TANKS  

SciTech Connect (OSTI)

CH2M HILL Hanford Group, Inc. (the Hanford Tank Farm Operations contractor) and the Department of Energy's Office of River Protection have just completed the first phase of the Hanford Single-Shell Tank RCRA Corrective Action Program. The focus of this first phase was to characterize the nature and extent of past Hanford single-shell tank releases and to characterize the resulting fate and transport of the released contaminants. Most of these plumes are below 20 meters, with some reaching groundwater (at 60 to 120 meters below ground surface [bgs]).

JARAYSI MN

2008-01-22T23:59:59.000Z

495

Even-Harmonic Generation due to Beyond-Born-Oppenheimer Dynamics  

SciTech Connect (OSTI)

We calculate the harmonic spectrum generated by a model HD molecule in a strong laser pulse. The unequal nuclear masses lead to the emission of even harmonics, i.e., photon frequencies which are even multiples of the laser frequency. The effect does not occur within the Born-Oppenheimer approximation. In the high-frequency region, the even harmonics are almost of the same order of magnitude as the odd ones.

Kreibich, Thomas; Lein, Manfred; Engel, Volker; Gross, E. K. U.

2001-09-03T23:59:59.000Z

496

E-Print Network 3.0 - anaphylactic reactions due Sample Search...  

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

and emergency room... or rapid strep test. Usually it doesn't have nasal symptoms and cough. Unless a medication reaction... visit. The nature of these reactions can put you at...

497

RFQ NUMBER: 379 January 03, 2012 Due date for submission of Quotation: 27/01/2012.  

E-Print Network [OSTI]

fraction either from sound speed, attenuation measurements or from conductivity 3) Calculation of PSD-polar liquids to aqueous suspensions of very high (~ 2 Molar) salt content Other requirements The sample holder

Udgaonkar, Jayant B.

498

Oscillatory motion based measurement method and sensor for measuring wall shear stress due to fluid flow  

DOE Patents [OSTI]

A shear stress sensor for measuring fluid wall shear stress on a test surface is provided. The wall shear stress sensor is comprised of an active sensing surface and a sensor body. An elastic mechanism mounted between the active sensing surface and the sensor body allows movement between the active sensing surface and the sensor body. A driving mechanism forces the shear stress sensor to oscillate. A measuring mechanism measures displacement of the active sensing surface relative to the sensor body. The sensor may be operated under periodic excitation where changes in the nature of the fluid properties or the fluid flow over the sensor measurably changes the amplitude or phase of the motion of the active sensing surface, or changes the force and power required from a control system in order to maintain constant motion. The device may be operated under non-periodic excitation where changes in the nature of the fluid properties or the fluid flow over the sensor change the transient motion of the active sensor surface or change the force and power required from a control system to maintain a specified transient motion of the active sensor surface.

Armstrong, William D. (Laramie, WY); Naughton, Jonathan (Laramie, WY); Lindberg, William R. (Laramie, WY)

2008-09-02T23:59:59.000Z

499

E-Print Network 3.0 - arterial hypertension due Sample Search...  

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

? Peripheral Arterial Disease (PAD) is a serious condition that is associated with heart attack and ... Source: Mootha, Vamsi K. - Department of Systems Biology, Harvard...

500

MS&E 235: Internet Commerce Problem Set 2, Due Tuesday, April 28, 2008  

E-Print Network [OSTI]

consumer rents 8 movies per month. Assume that the top 100 movies have a royalty fee of $2 that netflix must pay, the next 900 have a royalty of $1.50, and the rest have a royalty of $0.50. Compute 1 #12;Netflix's cost per customer. How sensitive is this number to a $0.25 change in the royalty fee

Goel, Ashish