National Library of Energy BETA

Sample records for worst-case conditions occurring

  1. Optimization Online - The Worst-case Wind Power Scenario for ...

    E-Print Network [OSTI]

    German Morales-España

    2014-09-16

    Sep 16, 2014 ... The Worst-case Wind Power Scenario for Adaptive Robust Unit Commitment Problems. German Morales-España(gmorales ***at*** kth.se).

  2. Worst-Case Analysis of Network Design Problem Heuristics

    E-Print Network [OSTI]

    Wong, Richard T.

    The Optimal Network problem (as defined by Scott [16]) consists of selecting a subset of arcs that minimizes the sum of the shortest paths between all nodes subject to a budget constraint. This paper considers the worst-case ...

  3. A comparison of normal and worst case cement plant emissions

    SciTech Connect (OSTI)

    Woodford, J.; Gossman, D.; Johnson, N.

    1996-12-31

    Lone Star Industries, Inc. in Cape Girardeau, Missouri conducted a trial burn in October, 1995. Two metals emissions test days were conducted. One of the test days was a worst case metals spiking day and one of the test days was a normal emissions day. This paper examines and compares the emissions from these two test days. Much has been made of metals emissions from hazardous waste burning cement kilns, but for the most part, this has been due to the worst case metals emissions data that became available from the 1992 BIF compliance testing performed and reported by 24 cement plants. By comparison, very little data exists on normal cement kiln emissions. This paper provides one comparison.

  4. Fair Round Robin: A Low Complexity Packet Scheduler with Proportional and Worst-Case

    E-Print Network [OSTI]

    Yuan, Xin

    1 Fair Round Robin: A Low Complexity Packet Scheduler with Proportional and Worst-Case Fairness Xin existing round robin schedulers. Index Terms-- Packet scheduling, proportional fairness, worst- case, the proportional fairness that was defined by Golestani in [6] and the worst-case fairness that was defined

  5. Measuring worst-case errors in a robot workcell

    SciTech Connect (OSTI)

    Simon, R.W.; Brost, R.C.; Kholwadwala, D.K. [Sandia National Labs., Albuquerque, NM (United States). Intelligent Systems and Robotics Center

    1997-10-01

    Errors in model parameters, sensing, and control are inevitably present in real robot systems. These errors must be considered in order to automatically plan robust solutions to many manipulation tasks. Lozano-Perez, Mason, and Taylor proposed a formal method for synthesizing robust actions in the presence of uncertainty; this method has been extended by several subsequent researchers. All of these results presume the existence of worst-case error bounds that describe the maximum possible deviation between the robot`s model of the world and reality. This paper examines the problem of measuring these error bounds for a real robot workcell. These measurements are difficult, because of the desire to completely contain all possible deviations while avoiding bounds that are overly conservative. The authors present a detailed description of a series of experiments that characterize and quantify the possible errors in visual sensing and motion control for a robot workcell equipped with standard industrial robot hardware. In addition to providing a means for measuring these specific errors, these experiments shed light on the general problem of measuring worst-case errors.

  6. Oblivious RAM with O((log N)3 ) Worst-Case Cost

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Oblivious RAM with O((log N)3 ) Worst-Case Cost Elaine Shi PARC/UC Berkeley T-H. Hubert Chan HKU applications. This paper proposes novel O-RAM con- structions that achieves poly-logarithmic worst-case cost in outsourced storage applications. Not surprisingly, the client has to pay a certain cost in order to hide its

  7. Fair Round Robin: A Low Complexity Packet Scheduler with Proportional and Worst-Case Fairness

    E-Print Network [OSTI]

    Yuan, Xin

    Fair Round Robin: A Low Complexity Packet Scheduler with Proportional and Worst-Case Fairness Xin, proportional fairness, worst-case fairness, round robin scheduler 1 Introduction An ideal packet scheduler to evaluate packet schedulers, the proportional fairness that was defined by Golestani in [6] and the worst

  8. A Worst-Case Circuit Delay Verification Technique Considering Power Grid Voltage Variations

    E-Print Network [OSTI]

    Najm, Farid N.

    A Worst-Case Circuit Delay Verification Technique Considering Power Grid Voltage Variations then these critical paths we tie the supplies of the gates to physical power grids and re-analyze for the worst- case and report on the implementation results using benchmark circuits tied to a number of test-case power grids

  9. Probabilistic Planning with Non-Linear Utility Functions and Worst-Case Guarantees

    E-Print Network [OSTI]

    Vladimirsky, Alexander

    Probabilistic Planning with Non-Linear Utility Functions and Worst-Case Guarantees Stefano Ermon Keywords Planning, Utility Functions, Constraints 1. INTRODUCTION Markov Decision Processes (MDPs) are one Decision Processes are one of the most widely used frameworks to formulate probabilistic planning problems

  10. FRR: a Proportional and Worst-Case Fair Round Robin Scheduler

    E-Print Network [OSTI]

    Duan, Zhenhai

    FRR: a Proportional and Worst-Case Fair Round Robin Scheduler Xin Yuan and Zhenhai Duan Department only achieve long term fairness, FRR not only provides proportional fairness, but also maintains that was defined by Bennett and Zhang in [2] and the proportional fairness that was defined by Golestani in [5

  11. Summary of space weather worst-case environments Draft 5, 30 November 2010

    E-Print Network [OSTI]

    Schrijver, Karel

    Summary of space weather worst-case environments Draft 5, 30 November 2010 coordinated by Mike Hapgood (mike.hapgood@stfc.ac.uk) Scope of this document Space weather may be described as disturbances of: The space weather environment parameters that best summarise the threat to those systems

  12. Java Virtual-Machine Support for Portable Worst-Case Execution-Time Analysis I. Bate, G. Bernat

    E-Print Network [OSTI]

    Java Virtual-Machine Support for Portable Worst-Case Execution-Time Analysis I. Bate, G. Bernat@vmars.tuwien.ac.at Abstract The current trend towards the usage of Java in real-time, supported by two specifications (Real-Time Java and Real- Time Core extensions for the Java platform) requires ade- quate schedulability analysis

  13. Int. J. Ad Hoc and Ubiquitous Computing, Vol. , No. , 2012 1 Worst-case Latency of Broadcast in Intermittently

    E-Print Network [OSTI]

    Int. J. Ad Hoc and Ubiquitous Computing, Vol. , No. , 2012 1 Worst-case Latency of Broadcast one year as a Research Fellow at Trinity College Dubin. He received his MSc degree in computer science and engi- neering in 2005 and his PhD in computer science in 2011 both from Linkoping University. His Ph

  14. A Study of the Mechanisms Leading to Re-Ignition in a Worst Case Fire Scenario

    E-Print Network [OSTI]

    Jomaas, Grunde; Roberts, B T; DuBois, Jacqueline; Torero, Jose L

    A systematic evaluation of the stability of a re-circulation zone behind a backward facing step under conditions expected in an aircraft engine nacelle has been conducted together with the evaluation of the effects of ...

  15. USE OF NATURALLY-OCCURRING TRACERS TO MONITOR TWO-PHASE CONDITIONS...

    Open Energy Info (EERE)

    USE OF NATURALLY-OCCURRING TRACERS TO MONITOR TWO-PHASE CONDITIONS IN THE COSO EGS PROJECT Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference...

  16. A Blueprint for Constructing Peer-to-Peer Systems Robust to Dynamic Worst-Case Joins and Leaves

    E-Print Network [OSTI]

    churn. For distributed systems with high churn the orthodox group communication schemes seem futile systems, churn has not received the attention it deserves in the literature. With the exception of [12], P hash table (DHT) which is resilient to churn. We assume that joins and leaves occur in a worst

  17. The MacArthur Maze Fire and Roadway Collapse: A "Worst Case Scenario" for Spent Nuclear Fuel Transportation?

    SciTech Connect (OSTI)

    Bajwa, Christopher S.; Easton, Earl P.; Adkins, Harold E.; Cuta, Judith M.; Klymyshyn, Nicholas A.; Suffield, Sarah R.

    2012-07-06

    In 2007, a severe transportation accident occurred near Oakland, California, at the interchange known as the "MacArthur Maze." The accident involved a double tanker truck of gasoline overturning and bursting into flames. The subsequent fire reduced the strength of the supporting steel structure of an overhead interstate roadway causing the collapse of portions of that overpass onto the lower roadway in less than 20 minutes. The US Nuclear Regulatory Commission has analyzed what might have happened had a spent nuclear fuel transportation package been involved in this accident, to determine if there are any potential regulatory implications of this accident to the safe transport of spent nuclear fuel in the United States. This paper provides a summary of this effort, presents preliminary results and conclusions, and discusses future work related to the NRC's analysis of the consequences of this type of severe accident.

  18. Worst-case Structural Analysis Qingnan Zhou

    E-Print Network [OSTI]

    Zorin, Denis

    printing. The cost of 3D printing has come down significantly over the past few years, and the industry for such products is radically different from the conventional manufacturing pipeline: 3D geometric models present a method that would identify structural problems in objects designed for 3D printing based

  19. Inhibition of slug front corrosion in multiphase flow conditions

    SciTech Connect (OSTI)

    Chen, H.J.; Jepson, W.P.

    1998-12-31

    Corrosion at the slug front at the bottom of a pipeline is identified as one of the worst cases of corrosion occurring in the pipeline which carries unprocessed multiphase production with a high level of CO{sub 2} gas. One objective of the study in recommending a subsea completion to shore was to determine if commercial corrosion inhibitors can control this type of corrosion using carbon steel pipeline. Thus, inhibitors which showed excellent performance in the lab using the Rotating Cylinder Electrode system (RCE) were further evaluated to confirm their performance in a flow loop simulating the test conditions predicted from the flow modeling for the proposed pipeline. The performance profile of two commercial inhibitors were determined in a 4 in. flow loop at 7O C, 100 psig CO{sub 2} partial pressure in corrosive brines with or without ethylene glycol and/or light hydrocarbon. Results showed that the carbon steel pipeline could be adequately protected at low temperature using a commercial corrosion inhibitor to meet the designed life of the pipeline. Ethylene glycol, which is used in the pipeline to prevent hydrate formation, reduces the corrosivity of the brine and gives no effect on inhibitor performance under the slug flow conditions. A good agreement in inhibitor performance was observed between the flow loop and the RCE testing. The uninhibited corrosion rate of the test brine in this study is in good agreement with the predicted value using deWaard and Williams correlation for CO{sub 2} corrosion.

  20. Worst-case-expectation approach to optimization under uncertainty

    E-Print Network [OSTI]

    2012-10-30

    applied to Brazilian operation planning of hydro plants. ..... t = 2, ..., T, is discretized by generating random sample from probability distribution of each random.

  1. OPTIMAL ACTUATOR PLACEMENT WITH MINIMUM WORST CASE DISTORTION CRITERION 3

    E-Print Network [OSTI]

    Fuchs, Moshe

    Abstract This paper deals with optimal actuator placemen t in truss structures for quasistatic shape. of Solid Mechanics, Ma terials and Structures y Associate Professor, Dept. of Solid Mechanics, Ma terialsvarying disturbance fields, slow enough to be considered static or quasi static, hence the shape control is quasistatic

  2. Smooth Strongly Convex Interpolation and Exact Worst-case ...

    E-Print Network [OSTI]

    2015-03-16

    Mar 16, 2015 ... Lambert, D., Crouzeix, J.P., Nguyen, V., Strodiot, J.J.: Finite convex integration. Journal of Convex Analysis. 11(1), 131146 (2004). 13. Lessard...

  3. Improving WCET by Applying Worst-Case Path Optimizations

    E-Print Network [OSTI]

    Mueller, Frank

    Science Department, North Carolina State University mueller@cs.ncsu.edu Abstract It is advantageous at a higher clock rate, which consumes more energy. Many researchers use profiling to identify the frequently. Compiler writers in recent years have used profile information to detect the frequently executed paths

  4. Preferential flow occurs in unsaturated conditions John R. Nimmo*

    E-Print Network [OSTI]

    classification schemes, but usual consideration of preferential flow includes macropore or fracture flow in Wiley Online Library (wileyonlinelibrary.com). DOI: 10.1002/hyp.8380 786Copyright 2011 John Wiley

  5. On the worst case behaviour of some approximation algorithms for the shortest common supersequence

    E-Print Network [OSTI]

    Irving, R.W.

    Irving,R.W. Fraser,C.B. Proceedings of CPM'93, the Fourth Annual Symposium on Combinatorial Pattern Matching, Padova, Italy, Lecture Notes in Computer Science vol. 684 pp 63-73 Springer

  6. Designing network traffic managers with throughput, fairness, and worst-case performance guarantees

    E-Print Network [OSTI]

    Wang, Hao

    2011-01-01

    in Electrical Engineering (Communication Theory and Systems)Science in Electrical Engineering (Communication Theory andin Electrical Engineering (Communication Theory and

  7. Estimating the Worst-Case Energy Consumption of Embedded Software Ramkumar Jayaseelan Tulika Mitra Xianfeng Li

    E-Print Network [OSTI]

    Mitra, Tulika

    ,tulika,lixianfe}@comp.nus.edu.sg Abstract The evolution of battery technology is not being able to keep up with the increasing performance demand of mobile embedded systems. Therefore, battery life has become an important design constraint performance. Unfortu- nately, the evolution of battery technology is not being able to keep up

  8. The Worst-case Wind Power Scenario for Adaptive Robust Unit ...

    E-Print Network [OSTI]

    Sep 16, 2014 ... Abstract: Abstract--- The increasing penetration of uncertain generation such as wind and solar in power systems imposes new challenges to...

  9. Approximate Method To Determine The Worst Case Performance Of A Nonlinear Dynamical System

    E-Print Network [OSTI]

    Tongue, Benson H.; Packard, Andrew

    1998-01-01

    Case Performance of a Nonlinear Dynamical System Benson H.Case Performance of a Nonlinear Dynamical System Benson H.

  10. CS264: Beyond Worst-Case Analysis Lecture #14: Smoothed Analysis of Pareto Curves

    E-Print Network [OSTI]

    Roughgarden, Tim

    and generate a sequence of Pareto curves PC0, PC1, . . . , PCn, where PCi denotes the Pareto curve order of total weight, PCi+1 can be obtained from PCi by merging two sorted lists (PCi and a "shifted version" of PCi). A suitable implementation of this idea yields an algorithm running in time O( n i=0 |PCi

  11. Which Is the Worst-Case Nash Equilibrium? Thomas Lucking1

    E-Print Network [OSTI]

    Mavronicolas, Marios

    1 , Manuel Rode1, , Paul Spirakis3,4 , and Imrich Vrto5 1 Faculty of Computer Science, Electrical Engineering and Mathematics University of Paderborn, Furstenallee 11, 33102 Paderborn, Germany {luck and Papadimitriou [9]; that work defined coordination ratio (also known as price of anarchy [15]) as a worst

  12. Determining worst-case fatigue thresholds for grain-bridging ceramics

    E-Print Network [OSTI]

    Kruzic, J.J.; Yuan, R.; Cannon, R.M.; Ritchie, R.O.

    2002-01-01

    bridging silicon carbide ceramic," Acta Mater. , 46 (2) 17.of R-curve behavior in ceramic/metal composites," Actastresses and R-curves in ceramic/metal composites," J. Eur.

  13. Evaluation of a Large Eddy Simulation's Applicability to a Worst Case Fire Scenario

    E-Print Network [OSTI]

    DuBois, Jacqueline

    The applicability of a large eddy simulation to a small scale turbulent flow problem is assessed by comparing modeled results to those recovered from a physical apparatus with the same geometry. The computational domain ...

  14. Environmental Conditions Environmental Conditions

    E-Print Network [OSTI]

    Environmental Conditions Environmental Conditions Appendix II The unique geology, hydrology and instream habitat. This chapter examines how environmental conditions in the Deschutes watershed affect, the discussion characterizes the environmental conditions within three watershed areas: the Lower Deschutes

  15. How low-energy fusion can occur

    E-Print Network [OSTI]

    B. Ivlev

    2012-12-04

    Fusion of two deuterons of room temperature energy is discussed. The nuclei are in vacuum with no connection to any external source (electric or magnetic field, illumination, surrounding matter, traps, etc.) which may accelerate them. The energy of two nuclei is conserved and remains small during the motion through the Coulomb barrier. The penetration through this barrier, which is the main obstacle for low-energy fusion, strongly depends on a form of the incident flux on the Coulomb center at large distances from it. In contrast to the usual scattering, the incident wave is not a single plane wave but the certain superposition of plane waves of the same energy and various directions, for example, a convergent conical wave. The wave function close to the Coulomb center is determined by a cusp caustic which is probed by de Broglie waves. The particle flux gets away from the cusp and moves to the Coulomb center providing a not small probability of fusion (cusp driven tunneling). Getting away from a caustic cusp also occurs in optics and acoustics.

  16. A study of the anatomical and chemical variations occuring in cottonseed grown under varying conditions

    E-Print Network [OSTI]

    Latta, James Edwin

    1932-01-01

    , The seaoad sewyle of the ground kernels was extraote4 with ethyl ether to roaches the orude fat. The water soluble IaLterial was Cetenained aooording to the method of Eads (1) with the exoeption that the water was evaporated and the percentage of water... t in t t Oil tProtein:Thinness of oell walls Koo t JUne tA stt tttio ons la : 1. V4 5, 59 4 25 20. VO 18. 15 2a t 2oV6 2ooV Oo05 leo62 22 F 56 Sa: 1, 22 2, 21 lol'9 19oV1 20o68 4a t 0 o69 lo40 Ooel 17oaa 20o51 ea t 1. 02 2. 79 2. 25 2O. 22 20. 65 6a : 1...

  17. Mineralization of Decalcified Bone Occurs Under Cell Culture Conditions and Requires Bovine Serum But Not Cells

    E-Print Network [OSTI]

    Price, Paul A.

    on the remineralization of demineralized bone in cell culture medium containing fetal bovine serum. Demineralized newborn to demineralization. Materials and Methods Materials Forty-day-old male rats (SpragueDawley-derived) were pur- chased

  18. USE OF NATURALLY-OCCURRING TRACERS TO MONITOR TWO-PHASE CONDITIONS IN THE

    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 Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThin Film SolarTown(LECBP)BioGen LLC JumpForestryForm12 JumpCOSO EGS

  19. Outline Introduction Worst-Case Optimal Search-Time Bounded Preprocessing Space Conclusion Text Indexing with Errors

    E-Print Network [OSTI]

    Lonardi, Stefano

    size $n$ and assume a uniform cost model throughout this work.} for exact matching the construction, the index construction time, the lookup time, and the error model. Usually, the least important Indexing with Errors Moritz G. Maa and Johannes Nowak {maass,nowakj}@in.tum.de Institut fur Informatik

  20. Adverse Weather Conditions If adverse weather conditions occur which affects tube, bus or rail services, Heads of Department/

    E-Print Network [OSTI]

    arrangements; taking leave (paid or unpaid), provided that this is acceptable in terms of the needs that this is acceptable in terms of the needs of the Department/Division; taking work home or working from home. 3. To avoid difficulty in the event that supplies are disrupted, please ensure that stocks of consumables

  1. A Case where a Paradox Like Braess's Occurs in the Nash Equilibrium but Does Not Occur in the Wardrop Equilibrium

    E-Print Network [OSTI]

    A Case where a Paradox Like Braess's Occurs in the Nash Equilibrium but Does Not Occur of the other individuals. Another framework in which such a paradox may occur is that of the Nash equilibrium­ negligible eoeect on the other players. It is natural to expect the same type of paradox in the Nash equilib

  2. Determining Planes Along Which Earthquakes Occur- Method of Applicatio...

    Open Energy Info (EERE)

    of earthquake locations is often so smeared that the underlying fault or joint structures along which the earthquakes occur cannot be inferred from visual inspection of...

  3. If a fire should occur... CLOSE the doors to

    E-Print Network [OSTI]

    Al Faruque, Mohammad Abdullah

    If a fire should occur... CLOSE the doors to stop the spread of the fire SOUND the alarm, alert others to the danger GET OUT of the building NOTIFY the fire department DO NOT go back into the building or try to save your stuff. Clothes, books and papers can be replaced- YOU CAN'T! Living With Fire

  4. Improving Home Automation by Discovering Regularly Occurring Device Usage Patterns

    E-Print Network [OSTI]

    Holder, Lawrence B.

    Improving Home Automation by Discovering Regularly Occurring Device Usage Patterns Edwin O in an environment can be mined to discover significant patterns, which an intelligent agent could use to automate of two prediction algorithms, thus demonstrating multiple uses for a home automation system. Finally, we

  5. Radioactive Mineral Occurences in Nevada | 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 Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/Water Use/NevadaaToolsRadioactive Mineral Occurences in

  6. Do naked singularities generically occur in generalized theories of gravity?

    E-Print Network [OSTI]

    Kengo Maeda; Takashi Torii; Makoto Narita

    1998-10-27

    A new mechanism for causing naked singularities is found in an effective superstring theory. We investigate the gravitational collapse in a spherically symmetric Einstein-Maxwell-dilaton system in the presence of a pure cosmological constant "potential", where the system has no static black hole solution. We show that once gravitational collapse occurs in the system, naked singularities necessarily appear in the sense that the field equations break down in the domain of outer communications. This suggests that in generalized theories of gravity, the non-minimally coupled fields generically cause naked singularities in the process of gravitational collapse if the system has no static or stationary black hole solution.

  7. Naturally occurring radionuclides in agricultural products: An overview

    SciTech Connect (OSTI)

    Hanlon, E.A.

    1994-07-01

    Low levels of naturally occurring radionuclides exist in phosphatic clays, a by-product of phosphatic mining and beneficiation processes. Concerns about these radionuclides entering the human food chain were an immediate research priority before the phosphate clays could be reclaimed for intensive agricultural purposes. Efforts included the assembly of a large body of data from both sons and plants, part of which were produced by the Polk County (Florida) Mined Lands Agricultural Research/Demonstration Project MLAR/DP. Additional detailed studies involving dairy and beef cattle (Bos taurus) were conducted by researchers working with the MLAR/DP. A national symposium was conducted in which data concerning the MLAR/DP work and other research projects also dealing with naturally occurring radionuclides in agriculture could be discussed. The symposium included invited review papers dealing with the identification of radionuclide geological origins, the geochemistry and movement of radionuclides within the environment, mechanisms of plant uptake, entry points into the food chain, and evaluation of dose and risk assessment to the consumer of low levels of radionuclides. The risk to human health of an individual obtaining 0.1 of his or her dietary intake from crops produced on phosphatic clays increased by 1 in 5 x 10{sup 6}/yr above a control individual consuming no food grown on phosphatic clays. Leaf tissues were found to be generally higher than fruit, grain, or root tissues. The natural range in radionuclide content among various food types was greater than the difference in radionuclides content between the same food produced on phosphatic clays vs. natural soils. 19 refs.

  8. Security Conditions

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2004-07-08

    This Notice ensures that DOE uniformly meets the requirements of the Homeland Security Advisory System outlined in Homeland Security Presidential Directive-3, Threat Conditions and Associated Protective Measures, dated 3-11-02, and provides responses specified in Presidential Decision Directive 39, U.S. Policy on Counterterrorism (U), dated 6-21-95. It cancels DOE N 473.8, Security Conditions, dated 8-7-02. Extended until 7-7-06 by DOE N 251.64, dated 7-7-05 Cancels DOE N 473.8

  9. Manufactured Home Testing in Simulated and Naturally Occurring High Winds

    SciTech Connect (OSTI)

    W. D. Richins; T. K. Larson

    2006-08-01

    A typical double-wide manufactured home was tested in simulated and naturally occurring high winds to understand structural behavior and improve performance during severe windstorms. Seven (7) lateral load tests were conducted on a double-wide manufactured home at a remote field test site in Wyoming. An extensive instrumentation package monitored the overall behavior of the home and collected data vital to validating computational software for the manufactured housing industry. The tests were designed to approach the design load of the home without causing structural damage, thus allowing the behavior of the home to be accessed when the home was later exposed to high winds (to 80-mph). The data generally show near-linear initial system response with significant non-linear behavior as the applied loads increase. Load transfer across the marriage line is primarily compression. Racking, while present, is very small. Interface slip and shear displacement along the marriage line are nearly insignificant. Horizontal global displacements reached 0.6 inch. These tests were designed primarily to collect data necessary to calibrate a desktop analysis and design software tool, MHTool, under development at the Idaho National Laboratory specifically for manufactured housing. Currently available analysis tools are, for the most part, based on methods developed for stick built structures and are inappropriate for manufactured homes. The special materials utilized in manufactured homes, such as rigid adhesives used in the connection of the sheathing materials to the studs, significantly alter the behavior of manufactured homes under lateral loads. Previous full scale tests of laterally loaded manufactured homes confirm the contention that conventional analysis methods are not applicable. System behavior dominates the structural action of manufactured homes and its prediction requires a three dimensional analysis of the complete unit, including tiedowns. This project was sponsored by the US Department of Energy, US Department of Housing and Urban Development, and the Manufactured Housing Institute. The results of this research can lead to savings in annual losses of life and property by providing validated information to enable the advancement of code requirements and by developing engineering software that can predict and optimize wind resistance.

  10. Using Theory to Model Polymer Properties There are two general themes to this research: (1) polymer degradation that occurs when

    E-Print Network [OSTI]

    the polymer with nanoinclusions of carbon nanotubes and graphene sheets and other structures. PolymerUsing Theory to Model Polymer Properties There are two general themes to this research: (1) polymer degradation that occurs when polymers are exposed to low earth orbit conditions, and (2) polymer mechanical

  11. Navy Mobility Fuels Forecasting System Phase 6 report: The potential impacts of a worst-case military conflict on world petroleum availability

    SciTech Connect (OSTI)

    Lee, R.; Das, S.; Leiby, P.N.

    1991-01-01

    A major Middle East and European military confrontation would cause an extremely large disruption in the supply of oil worldwide. There would be imbalances between oil supply and demand. These imbalances can only be solved by rationing and by military actions to ensure an adequate flow of crude oil and products. 25 refs., 5 tabs.

  12. Oklahoma City Flash Flood Event, 31 May -1 June 2013 Annual Exceedance Probabilities (AEPs) for Worst Case 4-hour and 6-hour Rainfall

    E-Print Network [OSTI]

    Oklahoma City Flash Flood Event, 31 May - 1 June 2013 Annual Exceedance Probabilities (AEPs HOLDENVILLEHOLDENVILLE MIDWEST CITYMIDWEST CITY OKLAHOMA CITYOKLAHOMA CITY Hydrometeorological Design Studies Center

  13. Decision Level Data Fusion for Routing of Documents in the TREC3 Context: A Best Case Analysis of Worst Case Results.

    E-Print Network [OSTI]

    algorithmic" process, carried out by one person, working without aid of thesaurus. The details of the fusion

  14. Laboratory and numerical investigation of transport processes occurring above and within a saltwater wedge

    E-Print Network [OSTI]

    Clement, Prabhakar

    Laboratory and numerical investigation of transport processes occurring above and within knowledge, so far no one has completed laboratory experiments to study contaminant transport processes occurring within a saltwater wedge. In this study, we completed laboratory experiments to understand

  15. Semiclassical energy conditions

    E-Print Network [OSTI]

    Martin-Moruno, Prado

    2013-01-01

    We present and develop several nonlinear energy conditions suitable for use in the semiclassical regime. In particular, we consider the recently formulated "flux energy condition" (FEC), and the novel "trace-of-square" (TOSEC) and "determinant" (DETEC) energy conditions. As we shall show, these nonlinear energy conditions behave much better than the classical linear energy conditions in the presence of semiclassical quantum effects. Moreover, whereas the quantum extensions of these nonlinear energy conditions seem to be quite widely satisfied as one enters the quantum realm, analogous quantum extensions are generally not useful for the linear classical energy conditions.

  16. FIRE /SMOKE The most effective method of fighting fires is to prevent them from occurring. All

    E-Print Network [OSTI]

    Jia, Songtao

    FIRE /SMOKE The most effective method of fighting fires is to prevent them from occurring. All-305-7979 (CUMC) after evacuating. Procedures for UNCONTROLLABLE FIRES DO NOT stay to fight a large or rapidly

  17. Microbial Biogeochemistry Chemical reactions occurring in the environment mediated by microbial communities

    E-Print Network [OSTI]

    Vallino, Joseph J.

    Microbial Biogeochemistry Chemical reactions occurring in the environment mediated by microbial communities Outline Metabolic Classifications. Winogradsky columns, Microenvironments. Redox Reactions Chemical (Chemotrophs) Inorganic (Chemolithotrophs) Aerobic (majority) Anaerobic (few) Organic

  18. Importance of the Equlibrium Node in Preventing the Voltage Collapse Occurs in the Wind Power System

    E-Print Network [OSTI]

    Lavaei, Javad

    or insufficient reactive power supplies may also contribute to voltage collapse and blackouts. In recent years, the voltage collapse or blackouts have occurred worldwide, such as the blackout in France at 1978 and blackout

  19. Descriptions of selected accidents that have occurred at nuclear reactor facilities

    SciTech Connect (OSTI)

    Bertini, H.W.

    1980-04-01

    This report was prepared at the request of the President's Commission on the Accident at Three Mile Island to provide the members of the Commission with some insight into the nature and significance of accidents that have occurred at nuclear reactor facilities in the past. Toward that end, this report presents a brief description of 44 accidents which have occurred throughout the world and which meet at least one of the severity criteria that were established.

  20. A convective-like energy-stable open boundary condition for ...

    E-Print Network [OSTI]

    S. Dong

    2015-09-21

    Sep 15, 2015 ... boundary condition ensures the energy stability of the system, even when strong vortices or backflows occur .... The objective of the current paper is twofold. First, we present ...... three-dimensional flow transition occurs. The lift...

  1. Molecular modeling of slip supposed to occur in the shock initiation of crystalline PETN

    SciTech Connect (OSTI)

    Ritchie, J.P.

    1992-12-01

    Some molecular modeling of slip using both rigid and flexible molecules of PETN in perfect, but finite, lattices has been performed. Results show that it is likely that molecular deformations occur and have an important effect in determining the shear strength.

  2. The blue shark (Prionace glauca) is an oceanic species that occurs in tem-

    E-Print Network [OSTI]

    720 The blue shark (Prionace glauca) is an oceanic species that occurs in tem- perate and tropical); numerically, the blue shark is the top nontarget species captured by the U.S. longline pelagic Atlantic fleet) on the catch rate of several target and bycatch species, including the blue shark. However, they did

  3. Mdm10 is an ancient eukaryotic porin co-occurring with the ERMES complex

    E-Print Network [OSTI]

    Just, Armin

    Mdm10 is an ancient eukaryotic porin co-occurring with the ERMES complex Nadine Flinner a , Lars -barrel protein Multiple sequence alignment Homology modeling Phylogenetic analysis ERMES SAM mitochondria encounter structure (ERMES), which tethers the ER to mitochondria and associates with the SAM

  4. Planetary and Space Science 56 (2008) 17781784 Predictions and observations of events and configurations occurring

    E-Print Network [OSTI]

    Sicardy, Bruno

    2008-01-01

    and configurations occurring during the Uranian equinox Jean-Eudes Arlot, Bruno Sicardy Paris Observatory of difficulties due to the faintness of the Uranian satellites and this proximity to the planet. 2. The equinox, 1990; Arlot, 2002; Arlot et al., 2006a, b). The equinox on Jupiter takes place every 6 years allowing

  5. Xylem cavitation caused by drought and freezing stress in four co-occurring Juniperus species

    E-Print Network [OSTI]

    Jackson, Robert B.

    Xylem cavitation caused by drought and freezing stress in four co-occurring Juniperus species induced by drought but in many cases, not by freezing. Rarely have vulnerability to drought and freezing and distribution of plants in many regions of the world. We studied vulnerability to drought- and freezing- induced

  6. New species of Mycosphaerella occurring on Eucalyptus leaves in Indonesia and Africa

    E-Print Network [OSTI]

    781 New species of Mycosphaerella occurring on Eucalyptus leaves in Indonesia and Africa P.W. Crous and M.J. Wingfield Ahstract:Although Africa and Indonesia have not been particularly well surveyed Eucalyptus leaves from Indonesia. The former species is of particular interest, because its anamorph

  7. Jet-like circulations occur in the `simple' geometries of gas planets and Earth's

    E-Print Network [OSTI]

    #12;Jet-like circulations occur in the `simple' geometries of gas planets and Earth's liquid to barotropize jets => life cycles of BC instability. large-scale PV gradients act as source of eddy entrophy The Jet Stream Conundrum Baldwin, Rhines, Huang & McIntyre, Nature 2007 #12;For Earth's oceans, density

  8. Enhanced Longevity by Ibuprofen, Conserved in Multiple Species, Occurs in Yeast through Inhibition of Tryptophan Import

    E-Print Network [OSTI]

    He, Chong; Tsuchiyama, Scott K.; Nguyen, Quynh T.; Plyusnina, Ekaterina N.; Terrill, Samuel R.; Sahibzada, Sarah; Patel, Bhumil; Faulkner, Alena R.; Shaposhnikov, Mikhail V.; Tian, Ruilin; Tsuchiya, Mitsuhiro; Kaeberlein, Matt; Moskalev, Alexey A.; Kennedy, Brian K.; Polymenis, Michael

    2014-12-18

    by Ibuprofen, Conserved in Multiple Species, Occurs in Yeast through Inhibition of Tryptophan Import Chong He1, Scott K. Tsuchiyama1, Quynh T. Nguyen2, Ekaterina N. Plyusnina3,4, Samuel R. Terrill2, Sarah Sahibzada2, Bhumil Patel1, Alena R. Faulkner1, Mikhail V...

  9. Endophytic and canker-associated Botryosphaeriaceae occurring on non-native Eucalyptus and native Myrtaceae

    E-Print Network [OSTI]

    Endophytic and canker-associated Botryosphaeriaceae occurring on non-native Eucalyptus and native associated with stem cankers on plantation-grown Eucalyptus globulus. Howev- er, very little is known their relationship is to those species infecting Eucalyptus in plantations. The objectives of this study were

  10. A multi-gene phylogeny for species of Mycosphaerella occurring on Eucalyptus leaves

    E-Print Network [OSTI]

    147 A multi-gene phylogeny for species of Mycosphaerella occurring on Eucalyptus leaves Gavin C Eucalyptus spp. where they cause leaf diseases collectively known as Mycosphaerella Leaf Disease (MLD Eucalyptus. A further aim was to study the anamorph concepts and resolve the deeper nodes of Mycosphaerella

  11. "Climate change is sure to occur in some form." The study of climate impacts notes

    E-Print Network [OSTI]

    "Climate change is sure to occur in some form." 1 #12;The study of climate impacts notes how scientists generally agree that humans are changing the climate, and that if we continue pumping carbon we learn from past climate variations? How can we best adapt to climate change? This report attempts

  12. Introduction Neutral grasslands occur throughout the UK on soils where the pH is within

    E-Print Network [OSTI]

    Introduction Neutral grasslands occur throughout the UK on soils where the pH is within the range 5 by grasses and herbs (Figure 1). The term `neutral', although indicative of soil pH, is more correctly descriptive of the species assemblage being neither markedly `calcifuge' (thriving in acid soils) nor

  13. EMERGENCY PROCEDURES Many types of emergencies can occur on campus; instructions for specific emergencies such as

    E-Print Network [OSTI]

    Capogna, Luca

    EMERGENCY PROCEDURES Many types of emergencies can occur on campus; instructions for specific emergencies such as severe weather, active shooter, or fire can be found at emergency.uark.edu. Severe Weather (Tornado Warning): Follow the directions of the instructor or emergency personnel Seek shelter

  14. between the nucleus and cytoplasm occurs through large macromolecular structures, the nuclear pores. Quantitative

    E-Print Network [OSTI]

    Forbes, Douglass

    363 between the nucleus and cytoplasm occurs through large macromolecular structures, the nuclear pores. Quantitative scanning transmission electron microscopy has estimated the mass of a nuclear pore noteworthy in that they saw: 1) the purification of both the yeast and vertebrate nuclear pores, 2

  15. LETTERS TO THE EDITOR RE: ``HOW MANY FOODBORNE OUTBREAKS OF SALMONELLA INFECTION OCCURRED IN

    E-Print Network [OSTI]

    Boehning, Dankmar

    LETTERS TO THE EDITOR RE: ``HOW MANY FOODBORNE OUTBREAKS OF SALMONELLA INFECTION OCCURRED IN FRANCE outbreaks of Salmonella infection that had oc- curred in France during the year 1995. The data provided), the Ministry of Agriculture (MA), and the National Salmonella and Shigella Reference Center (NRC). A complete

  16. On the recent M=6.1 earthquake occurred at Kefalonia island (South-West Greece) on 26 January 2014: Manifestations of an Earth system in critical state

    E-Print Network [OSTI]

    Contoyiannis, Y; Kopanas, J; Antonopoulos, G; Koulouras, G; Eftaxias, K; Nomicos, C

    2014-01-01

    In this paper we show, in terms of fracture-induced electromagnetic emissions (EME) recorded two days prior to the earthquake of Kefalonia (Cephalonia), Greece [(38.22o N, 20.53oE), 26 January 2014, M=6.1] that the Earth system around the focal area came to critical condition two days before the earthquake occurence. Specifically, the MHz EME recorded by the remote telemetric stations on the island of Kefalonia and the neighboring island of Zante came simultaneously to critical conditions. The analysis was performed by means of the method of critical fluctuations (MCF) revealing critical features.

  17. Mechanical Performance Extreme Conditions

    E-Print Network [OSTI]

    Mechanical Performance Extreme Conditions METALS This project provides property data, metrology information using the image correlation technique. With this instrument, high strain rate mechanical testing

  18. Terms and Conditions

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

    Testbed Results Current Testbed Research Proposal Process Terms and Conditions Dark Fiber Testbed Federated Testbed Circuits Test Circuit Service Performance (perfSONAR)...

  19. Proton magnetic resonance studies of the chemical shifts occurring in propionic acid-dioxane solutions

    E-Print Network [OSTI]

    Oldham, William J. Bryan

    1958-01-01

    ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 0 ~ ~ ~ 35 LIET OF TABES TAEIR6 l, Chemical shiftsoccurring in aqueous solutions of propionic PAGE ac id ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 21 2, Chemical shifts occurring in propionic ac1d-dioxane solut1ons 22 3. C... is added. , the dimers break up to form monomers. There i, s formed alternately a hydrogen bond between the monomer ac1d and the water, forming a complex. If the correlation times of the diner state aud oomplex water state ere sufficiently smallv...

  20. Roles of Naturally Occurring Bacteria in Controlling Iodine-129 Mobility in Subsurface Soils

    E-Print Network [OSTI]

    Li, Hsiu-Ping

    2012-10-19

    (IO3-) and is the predominant species in the terrestrial environment due to prevailing pH and Eh conditions. In order to transform I- to less mobile organo-iodine (OI), strong oxidants are necessary to activate the first electron transfer step from I...

  1. Nanoindentation Under Dynamic Conditions

    E-Print Network [OSTI]

    Wheeler, Jeffrey M

    2009-05-22

    and in analysis of the resulting data. Recent development has enabled investigation of materials under several dynamic conditions. The palladium-hydrogen system has a large miscibility gap, where the palladium lattice rapidly expands to form a hydrogen-rich ?...

  2. Sandia Energy - Extreme Conditions Modeling

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

    Extreme Conditions Modeling Home Stationary Power Energy Conversion Efficiency Water Power Technology Development Extreme Conditions Modeling Extreme Conditions ModelingAshley...

  3. Conditional data watchpoint management

    DOE Patents [OSTI]

    Burdick, Dean Joseph (Austin, TX); Vaidyanathan, Basu (Austin, TX)

    2010-08-24

    A method, system and computer program product for managing a conditional data watchpoint in a set of instructions being traced is shown in accordance with illustrative embodiments. In one particular embodiment, the method comprises initializing a conditional data watchpoint and determining the watchpoint has been encountered. Upon that determination, examining a current instruction context associated with the encountered watchpoint prior to completion of the current instruction execution, further determining a first action responsive to a positive context examination; otherwise, determining a second action.

  4. Systems and methods for facilitating hydrogen storage using naturally occurring nanostructure assemblies

    DOE Patents [OSTI]

    Fliermans; , Carl B. (Augusta, GA)

    2012-08-07

    Some or all of the needs above can be addressed by embodiments of the invention. According to embodiments of the invention, systems and methods for facilitating hydrogen storage using naturally occurring nanostructure assemblies can be implemented. In one embodiment, a method for storing hydrogen can be provided. The method can include providing diatoms comprising diatomaceous earth or diatoms from a predefined culture. In addition, the method can include heating the diatoms in a sealed environment in the presence of at least one of titanium, a transition metal, or a noble metal to provide a porous hydrogen storage medium. Furthermore, the method can include exposing the porous hydrogen storage medium to hydrogen. In addition, the method can include storing at least a portion of the hydrogen in the porous hydrogen storage medium.

  5. Methods of and apparatus for recording images occurring just prior to a rapid, random event

    SciTech Connect (OSTI)

    Kelley, E.F.

    1991-12-31

    An apparatus and a method are disclosed for recording images of events in a medium wherein the images that are recorded are of conditions existing just prior to and during the occurrence of an event that triggers recording of these images. The apparatus and method use an optical delay path that employs a spherical focusing mirror facing a circular array of flat return mirrors around a central flat mirror. The image is reflected in a symmetric pattern which balances astigmatism which is created by the spherical mirror. Delays on the order of hundreds of nanoseconds are possible.

  6. Solutions and Generalizations of Partial Differential Equations Occurring in Petroleum Engineering

    E-Print Network [OSTI]

    Dacunha, Jeffrey

    2014-07-08

    of solids and rj is the rate of reaction of mineral j in mole/cm3 of bed volume/min. Another example can be found in modeling the behavior of a rod string in a sucker rod pumping system. In deriving the force balance of a segment of a sucker rod string..., the resulting partial differential equation is the one dimensional damped wave equation, with the rare instance of both boundary conditions prescribed at one end of the rod string, in particular at the surface. Application of the damped wave equation to modeling...

  7. 2300 SYSTEM Conditioning Amplifier

    E-Print Network [OSTI]

    Gellman, Andrew J.

    2300 SYSTEM Signal Conditioning Amplifier 2310 Instruction Manual Vishay Micro-Measurements P date of shipment. Coverage of computers, cameras, rechargeable batteries, and similar items, sold on non-rechargeable batteries and similar consumable items is limited to the delivery of goods free from

  8. History of Air Conditioning

    Office of Energy Efficiency and Renewable Energy (EERE)

    We take it for granted but what would life be like without the air conditioner? Once considered a luxury, this invention is now an essential, allowing us to cool everything from homes, businesses, businesses, data centers, laboratories and other buildings vital to our daily lives. Explore this timeline to learn some of the key dates in the history of air conditioning.

  9. A century of oil and gas exploration in Albania: assessment of Naturally Occurring Radioactive Materials (NORMs)

    E-Print Network [OSTI]

    Xhixha, Gerti; Callegari, Ivan; Colonna, Tommaso; Hasani, Fadil; Mantovani, Fabio; Shala, Ferat; Strati, Virginia; Kaeli, Merita Xhixha

    2015-01-01

    Because potential Naturally Occurring Radioactive Materials (NORMs) generated from oil and gas extractions in Albania have been disposed without regulatory criteria in many decades, an extensive survey in one of the most productive regions (Vlora-Elbasan) has been performed. Among 52 gamma-ray spectrometry measurements of soil, oil-sand, sludge, produced water and crude oil samples, we discover that relatively low activity concentrations of 226Ra, 228Ra, 228Th and 40K, which are 23 +/- 2 Bq/kg, 23 +/- 2 Bq/kg, 24 +/- 3 Bq/kg and 549 +/- 12 Bq/kg, respectively, come from oil-sand produced by hydrocarbon extraction from molasses formations. The mineralogical characterization together with the 228Ra/40K and 226Ra/40K ratios of these Neogene deposits confirm the geological and geodynamic model that predicts a dismantling of Mesozoic source rocks. The average activity concentrations (+/- standard deviations) of the radium isotopes (226Ra, 228Ra) and of the 228Th and 40K radionuclides in soil samples are determined...

  10. An overview of naturally occurring radioactive materials (NORM) in the petroleum industry

    SciTech Connect (OSTI)

    Smith, K.P.

    1992-12-01

    Oil and gas extraction and processing operations sometimes accumulate naturally occurring radioactive materials (NORM) at concentrations above normal in by-product waste streams. Results from NORM surveys indicate that radionuclide concentrations can be quite variable, ranging from undetectable to extremely high levels. To date, efforts to characterize the geographic distribution of NORM have been limited by poor statistical representation. In addition, the fate of NORM in the environment has not been fully defined, and few human health risk assessment have been conducted. Both the petroleum industry and regulators are becoming increasingly concerned about the presence of NORM. At present, most existing federal environmental regulations do not address oil and gas NORM, and only a few states have developed regulatory programs. Available data suggest that the occurrence of NORM (and associated health risks) is significant enough to warrant increased regulatory control. However, before these regulations can be developed, additional research is needed to (1) better characterize the occurrence and distribution of NORM throughout the industry, (2) quantify hazards posed by NORM to industry workers and the general public, and (3) develop effective waste treatment and minimization technologies that will lower the risk associated with NORM and reduce disposal costs.

  11. Development Of An Experiment For Measuring Flow Phenomena Occurring In A Lower Plenum For VHTR CFD Assessment

    SciTech Connect (OSTI)

    D. M. McEligot; K.G. Condie; G. E. Mc Creery; H. M. Mc Ilroy

    2005-09-01

    The objective of the present report is to document the design of our first experiment to measure generic flow phenomena expected to occur in the lower plenum of a typical prismatic VHTR (Very High Temperature Reactor) concept. In the process, fabrication sketches are provided for the use of CFD (computational fluid dynamics) analysts wishing to employ the data for assessment of their proposed codes. The general approach of the project is to develop new benchmark experiments for assessment in parallel with CFD and coupled CFD/systems code calculations for the same geometry. One aspect of the complex flow in a prismatic VHTR is being addressed: flow and thermal mixing in the lower plenum ("hot streaking" issue). Current prismatic VHTR concepts were examined to identify their proposed flow conditions and geometries over the range from normal operation to decay heat removal in a pressurized cooldown. Approximate analyses were applied to determine key non-dimensional parameters and their magnitudes over this operating range. The flow in the lower plenum can locally be considered to be a situation of multiple jets into a confined crossflow -- with obstructions. Flow is expected to be turbulent with momentum-dominated turbulent jets entering; buoyancy influences are estimated to be negligible in normal full power operation. Experiments are needed for the combined features of the lower plenum flows. Missing from the typical jet experiments available are interactions with nearby circular posts and with vertical posts in the vicinity of vertical walls - with near stagnant surroundings at one extreme and significant crossflow at the other.

  12. Biomechanical conditions of walking

    E-Print Network [OSTI]

    Fan, Y F; Luo, L P; Li, Z Y; Han, S Y; Lv, C S; Zhang, B

    2015-01-01

    The development of rehabilitation training program for lower limb injury does not usually include gait pattern design. This paper introduced a gait pattern design by using equations (conditions of walking). Following the requirements of reducing force to the injured side to avoid further injury, we developed a lower limb gait pattern to shorten the stride length so as to reduce walking speed, to delay the stance phase of the uninjured side and to reduce step length of the uninjured side. This gait pattern was then verified by the practice of a rehabilitation training of an Achilles tendon rupture patient, whose two-year rehabilitation training (with 24 tests) has proven that this pattern worked as intended. This indicates that rehabilitation training program for lower limb injury can rest on biomechanical conditions of walking based on experimental evidence.

  13. Air conditioning apparatus

    SciTech Connect (OSTI)

    Ouchi, Y.; Otoshi, Sh.

    1985-04-09

    The air conditioning apparatus according to the invention comprises an absorption type heat pump comprising a system including an absorber, a regenerator, a condenser and an evaporator. A mixture of lithium bromide and zinc chloride is used as an absorbent which is dissolved to form an absorbent solution into a mixed solvent having a ratio by weight of methanol to water, the ratio falling in a range between 0.1 and 0.3. Said solution is circulated through the system.

  14. High voltage pulse conditioning

    DOE Patents [OSTI]

    Springfield, Ray M. (Sante Fe, NM); Wheat, Jr., Robert M. (Los Alamos, NM)

    1990-01-01

    Apparatus for conditioning high voltage pulses from particle accelerators in order to shorten the rise times of the pulses. Flashover switches in the cathode stalk of the transmission line hold off conduction for a determinable period of time, reflecting the early portion of the pulses. Diodes upstream of the switches divert energy into the magnetic and electrostatic storage of the capacitance and inductance inherent to the transmission line until the switches close.

  15. Fuel gas conditioning process

    DOE Patents [OSTI]

    Lokhandwala, Kaaeid A. (Union City, CA)

    2000-01-01

    A process for conditioning natural gas containing C.sub.3+ hydrocarbons and/or acid gas, so that it can be used as combustion fuel to run gas-powered equipment, including compressors, in the gas field or the gas processing plant. Compared with prior art processes, the invention creates lesser quantities of low-pressure gas per unit volume of fuel gas produced. Optionally, the process can also produce an NGL product.

  16. Manufactured Home Testing in Simulated and Naturally Occurring High Winds for WCTE Conference

    SciTech Connect (OSTI)

    William D. Richins; Thomas K. Larson; Jeffrey M. Lacy; Ryan G. Kobbe

    2006-08-01

    A typical double-wide manufactured home was tested in simulated and naturally occurring high winds to understand structural behavior and improve performance during severe windstorms. Seven (7) lateral load tests were conducted on a double-wide manufactured home at a remote field test site in Wyoming. An extensive instrumentation package monitored the overall behavior of the home and collected data vital to validating computational software for the manufactured housing industry. The tests were designed to approach the design load of the home without causing structural damage, thus allowing the behavior of the home to be accessed when the home was later exposed to high winds (to 80-mph). The data generally show near-linear initial system response with significant non-linear behavior as the applied loads increase. Load transfer across the marriage line is primarily compression. Racking, while present, is very small. Interface slip and shear displacement along the marriage line are nearly insignificant. Horizontal global displacements reached 0.6 inch. These tests were designed primarily to collect data necessary to calibrate a desktop analysis and design software tool, MHTool, under development at the Idaho National Laboratory specifically for manufactured housing. Currently available analysis tools are, for the most part, based on methods developed for "stick built" structures and are inappropriate for manufactured homes. The special materials utilized in manufactured homes, such as rigid adhesives used in the connection of the sheathing materials to the studs, significantly alter the behavior of manufactured homes under lateral loads. Previous full scale tests of laterally loaded manufactured homes confirm the contention that conventional analysis methods are not applicable. System behavior dominates the structural action of manufactured homes and its prediction requires a three dimensional analysis of the complete unit, including tie-downs. This project was sponsored by the US Department of Energy, US Department of Housing and Urban Development, and the Manufactured Housing Institute. The results of this research can lead to savings in annual losses of life and property by providing validated information to enable the advancement of code requirements and by developing engineering software that can predict and optimize wind resistance.

  17. Radiation stability of graphene under extreme conditions

    SciTech Connect (OSTI)

    Kumar, Sunil, E-mail: kumar.sunil092@gmail.com; Tripathi, Ambuj; Khan, Saif A.; Pannu, Compesh; Avasthi, Devesh K. [Materials Science Group, Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067 (India)

    2014-09-29

    In this letter, we report radiation stability of graphene under extreme condition of high energy density generated by 150?MeV Au ion irradiation. The experiment reveals that graphene is radiation resistant for irradiation at 10{sup 14?}ions/cm{sup 2} of 150?MeV Au ions. It is significant to note that annealing effects are observed at lower fluences whereas defect production occurs at higher fluences but significant crystallinity is retained. Our results demonstrate applicability of graphene based devices in radiation environment and space applications.

  18. Kidney cancer is one of the most common cancers occurring in 1-2% of individuals in their

    E-Print Network [OSTI]

    O'Hern, Corey S.

    Kidney cancer is one of the most common cancers occurring in 1-2% of individuals in their lifetime. The current incidence in the United States is approximately 60,000-cases/ year. While many cancers were believed to occur sporadically, it's now understood approximately 5-8% of kidney cancers have a genetic

  19. It has been demonstrated that pictures whose names occur more frequently (e.g., dog) are named faster than

    E-Print Network [OSTI]

    Caramazza, Alfonso

    It has been demonstrated that pictures whose names occur more frequently (e.g., dog) are named faster than pictures whose names occur less frequently (e.g., deer; Oldfield & Wingfield, 1965 with variables like structural similarity in picture naming experiments (Humphreys, Riddoch, & Quinlan, 1988

  20. Conditional sterility in plants

    DOE Patents [OSTI]

    Meagher, Richard B. (Athens, GA); McKinney, Elizabeth (Athens, GA); Kim, Tehryung (Taejeon, KR)

    2010-02-23

    The present disclosure provides methods, recombinant DNA molecules, recombinant host cells containing the DNA molecules, and transgenic plant cells, plant tissue and plants which contain and express at least one antisense or interference RNA specific for a thiamine biosynthetic coding sequence or a thiamine binding protein or a thiamine-degrading protein, wherein the RNA or thiamine binding protein is expressed under the regulatory control of a transcription regulatory sequence which directs expression in male and/or female reproductive tissue. These transgenic plants are conditionally sterile; i.e., they are fertile only in the presence of exogenous thiamine. Such plants are especially appropriate for use in the seed industry or in the environment, for example, for use in revegetation of contaminated soils or phytoremediation, especially when those transgenic plants also contain and express one or more chimeric genes which confer resistance to contaminants.

  1. College of Engineering Policy for Release Time and Buyout Conditions

    E-Print Network [OSTI]

    Firestone, Jeremy

    College of Engineering Policy for Release Time and Buyout Conditions The standard UD workload Policy for Buy-out of Instructional Time document, which values a single course at 12.5%. In general, this buyout can only occur after release time has been charged to the grant. As an example, a faculty member

  2. Comparative genomics in acid mine drainage biofilm communities reveals metabolic and structural differentiation of co-occurring archaea

    E-Print Network [OSTI]

    2013-01-01

    co-occurring archaea. BMC Genomics 2013 14:485. Submit yourgenomes. Yelton et al. BMC Genomics 2013, 14:485 http://work was supported by DOE Genomics: GTL project Grant No.

  3. Health Hazard Chart The following is a target organ categorization of effects that may occur, including examples of signs and

    E-Print Network [OSTI]

    Slatton, Clint

    Health Hazard Chart The following is a target organ categorization of effects that may occur which affect the eye or visual capacity Conjunctivitis, corneal damage Organic solvents, acids #12;

  4. Semiclassical energy conditions and wormholes

    E-Print Network [OSTI]

    Prado Martin-Moruno

    2014-11-17

    We consider the nonlinear energy conditions and their quantum extensions. These new energy conditions behave much better than the usual pointwise energy conditions in the presence of semiclassical quantum effects. Analogous quantum extensions for the linear energy conditions are not always satisfied as one enters the quantum realm, but they can be used to constrain the violation of the classical conditions. Thus, the existence of wormholes supported by a fluid which violates the null energy condition in a controlled way is of particular interest.

  5. Influence of thermal conditioning media on Charpy specimen test temperature

    SciTech Connect (OSTI)

    Nanstad, R.K.; Swain, R.L.; Berggren, R.G.

    1989-01-01

    The Charpy V-notch (CVN) impact test is used extensively for determining the toughness of structural materials. Research programs in many technologies concerned with structural integrity perform such testing to obtain Charpy energy vs temperature curves. American Society for Testing and Materials Method E 23 includes rather strict requirements regarding determination and control of specimen test temperature. It specifies minimum soaking times dependent on the use of liquids or gases as the medium for thermally conditioning the specimen. The method also requires that impact of the specimen occur within 5 s removal from the conditioning medium. It does not, however, provide guidance regarding choice of conditioning media. This investigation was primarily conducted to investigate the changes in specimen temperature which occur when water is used for thermal conditioning. A standard CVN impact specimen of low-alloy steel was instrumented with surface-mounted and embedded thermocouples. Dependent on the media used, the specimen was heated or cooled to selected temperatures in the range {minus}100 to 100{degree}C using cold nitrogen gas, heated air, acetone and dry ice, methanol and dry ice, heated oil, or heated water. After temperature stabilization, the specimen was removed from the conditioning medium while the temperatures were recorded four times per second from all thermocouples using a data acquisition system and a computer. The results show that evaporative cooling causes significant changes in the specimen temperatures when water is used for conditioning. Conditioning in the other media did not result in such significant changes. The results demonstrate that, even within the guidelines of E 23, significant test temperature changes can occur which may substantially affect the Charpy impact test results if water is used for temperature conditioning. 7 refs., 11 figs.

  6. Optimization of Air Conditioning Cycling

    E-Print Network [OSTI]

    Seshadri, Swarooph

    2012-10-19

    Systems based on the vapor compression cycle are the most widely used in a variety of air conditioning applications. Despite the vast growth of modern control systems in the field of air conditioning systems, industry standard control is still...

  7. When Does Aid Conditionality Work?

    E-Print Network [OSTI]

    Montinola, Gabriella R.

    2010-01-01

    2005, the Group of Eight (G8) nations committed to increaseprogram conditions. Given the G8 industrialized nations

  8. Energy conditions and their implications

    E-Print Network [OSTI]

    Visser, Matt

    Energy conditions and their implications Matt Visser Physics Department Washington University Saint;#16;s (Los Alamos) Midwest Relativity 9 November 1999. #12; Abstract: The energy conditions of general- itational #12;elds and cosmological geometries. However, the energy conditions are beginning to look a lot

  9. TTProblem A Air Conditioning Machinery

    E-Print Network [OSTI]

    California at Berkeley, University of

    TTProblem A Air Conditioning Machinery Input file: ducts.in You are a technician for the Air Conditioning Machinery company (ACM). Unfortunately, when you arrive at a customer site to install some air conditioning ducts, you discover that you are running low on supplies. You have only six duct segments

  10. Lead in Your Drinking Water Lead (Pb) is an extremely toxic heavy metal that unfortunately occurs widely in

    E-Print Network [OSTI]

    Maynard, J. Barry

    Lead in Your Drinking Water Lead (Pb) is an extremely toxic heavy metal that unfortunately occurs widely in our environment. The chief sources of exposure are from (1) Lead paint commonly present in house interiors (2) Leaded gasoline soils along major roadways are strongly enriched in lead

  11. Aspects of co-occurring syllables and head nods in spontaneous dialogue Simon Alexanderson, David House, Jonas Beskow

    E-Print Network [OSTI]

    Beskow, Jonas

    Aspects of co-occurring syllables and head nods in spontaneous dialogue Simon Alexanderson, David of head nods taken from motion capture data of spontaneous dialogue in Swedish. The head nods were. While the peak rotation of the nod is on average aligned with the stressed syllable, the results show

  12. Water in a Crowd In many situations, form biology to geology, water occurs not as the pure bulk

    E-Print Network [OSTI]

    Fayer, Michael D.

    Water in a Crowd In many situations, form biology to geology, water occurs not as the pure bulk species, and interacting with large organic molecules. In such situations, water does not behave in the same manner as it does in the pure bulk liquid. Water dynamics are fundamental to many processes

  13. In 2005, an outbreak of West Nile virus (WNV) disease occurred in Sacramento County, California; 163 human cas-

    E-Print Network [OSTI]

    Peterson, Robert K. D.

    In 2005, an outbreak of West Nile virus (WNV) disease occurred in Sacramento County, California, the Sacramento-Yolo Mosquito and Vector Control District conducted an emergency aerial spray. We determined disease. WNV disease in Sacramento County cost $2.28 million for medical treatment and patients' pro

  14. Recovery systems must save state before a failure occurs to enable the system to recover from the failure. However,

    E-Print Network [OSTI]

    Chen, Peter M.

    Abstract Recovery systems must save state before a failure occurs to enable the system to recover from the failure. However, recovery will fail if the recovery system saves any state corrupted by the fault. The frequency and comprehensive- ness of how a recovery system saves state has a major effect

  15. Lab 2: Mineral Lab notes. Minerals are inorganic, solid, naturally occurring substances that have a characteristic chemical compositions,

    E-Print Network [OSTI]

    Li, X. Rong

    Lab 2: Mineral Lab notes. Minerals are inorganic, solid, naturally occurring substances that have composition is the chemical elements that make up any given mineral. For instance, the mineral quartz is silicon dioxide SiO2; the mineral galena is an ore of lead, and its chemical formula is PbS, a lead

  16. (LNG) production. Volitional selection occurs, for instance, in verbal fluency and verb generation, tasks widely used as

    E-Print Network [OSTI]

    #12;(LNG) production. Volitional selection occurs, for instance, in verbal fluency and verb attention focusing on incorpo- rating response selection into contemporary models of LNG and speech. One-general processes has important theoretical impli- cations for modelling of spoken LNG behaviour. Contempo- rary

  17. STRESS MANAGEMENT Stress occurs in everyone's life. How stressful something is depends on how we perceive it. Stress is not

    E-Print Network [OSTI]

    Wu, Shin-Tson

    STRESS MANAGEMENT Stress occurs in everyone's life. How stressful something is depends on how we perceive it. Stress is not necessarily a bad thing. It can help to motivate and drive us toward our goals levels of stress can have a negative impact. Medical school is demanding and can cause both prolonged

  18. Naturally occurring, optically driven, cellular rotor J. A. Dharmadhikari, S. Roy, A. K. Dharmadhikari, S. Sharma, and D. Mathura)

    E-Print Network [OSTI]

    Sharma, Shobhona

    005, India (Received 10 June 2004; accepted 20 October 2004) We report the conversion of optical energy into mechanical energy by naturally occurring red blood cells (RBCs) placed in an optical trap material, biconcave disk-shaped red blood cells (RBCs), which convert optical energy into mechanical energy

  19. Chapter 5. Conclusion Uranium, a naturally occurring element, contributes to low levels of natural background radiation in the

    E-Print Network [OSTI]

    5-1 Chapter 5. Conclusion Uranium, a naturally occurring element, contributes to low levels into uranium oxide or other chemical forms usable in industry. Uranium undergoes radioactive decay into a long are extracted from the earth. Protore is mined uranium ore that is not rich enough to meet the market demand

  20. CPFFS Exhibit A General Conditions

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

    General Conditions Page 29 of 33 (3) A least developed country (Afghanistan, Angola, Bangladesh, Benin, Bhutan, Burkina Faso, Burundi, Cambodia, Central African Republic, Chad,...

  1. A Wireless Power Interface for Rechargeable Battery Operated Neural Recording Implants

    E-Print Network [OSTI]

    Slatton, Clint

    A Wireless Power Interface for Rechargeable Battery Operated Neural Recording Implants Pengfei Li. The battery charger employs a new control loop that relaxes comparator resolution require- ments, provides-of- charge accuracy can be obtained under worst-case conditions for a comparator offset voltage of 5m

  2. Demand-Side Load Scheduling Incentivized by Dynamic Energy Hadi Goudarzi, Safar Hatami, and Massoud Pedram

    E-Print Network [OSTI]

    Pedram, Massoud

    consumption-dependent pricing function for electricity consumption. Exact solutions (based on Branch and Bound to avoid blackouts. At the same time, the electrical power consumption is rising rapidly. Without a major growth in electrical energy consumption under worst- case demand conditions [1]. To avoid expending

  3. COM PUTATIONAL ('Obl PLEXITY AND LEXICAL FUNCTIONAL GRAMMAR

    E-Print Network [OSTI]

    by demonstrating that modestly r~tricted transformational grammar~ (TGs) can generate languages whose recognition-decreasing" condition,as suggestedby Petersand Myhill.) Thus, in the worst case TGs generate languages whose recognition;Berwiek and Weinbcrg [5]). Without resolvingthatcuntroversyhere howeser, one thin-g- can be said:to make TGs cmciendy

  4. Automated Services Management over Virtualization Traditional Data Centers (DCs) use static allocation of resources to ensure satisfaction of

    E-Print Network [OSTI]

    Krause, Rolf

    . In the context of the RESERVOIR FP7 project, USI is working with first-class industrial partners (IBM, SAP, Sun demand or in worst-case environment conditions (over-provisioning). Virtualization allows system services and compositions could increase development costs and eventually break existing systems in case

  5. NO. REV. NO. December -January System Safety

    E-Print Network [OSTI]

    Rathbun, Julie A.

    in that a preloaded LSG boyd bolt could fail in shear and strike an astronaut EMU. The MSC System Safety Office has since determined that, in the worst case, the amount of energy in a boyd bolt under such conditions precautions were provided throughout. This support will continue when the prototype tests are resumed. 7. 2

  6. The impact of co-occurring tree and grassland species on carbon sequestration and potential biofuel production

    E-Print Network [OSTI]

    Thomas, David D.

    for terrestrial carbon sequestration and potential biofuel production. For P. strobus, above- ground plant carbonThe impact of co-occurring tree and grassland species on carbon sequestration and potential biofuel production R A M E S H L A U N G A N I and J O H A N N E S M . H . K N O P S School of Biological Sciences

  7. Necessary and sufficient conditions of freezing phenomena of quantum discord under phase damping

    E-Print Network [OSTI]

    Bo You; Li-Xiang Cen

    2012-06-27

    We investigate the freezing phenomenon of quantum discord occurring in phase damping noise processes. By relating the expression of the time variation of the discord to the convex function of relative entropy, we obtain the necessary and sufficient conditions of the phenomenon for standard Bell-diagonal states. These conditions are applicable also to the phenomenon occurring in a non-Markovian dephasing process. Moreover, we show that the same condition and phenomenon coincide in a new sort of Bell-diagonal states beyond the standard form.

  8. Importance of Design Conditions for Sizing Air-Conditioning Plant

    E-Print Network [OSTI]

    Shaban, N.; Maheshwari, G. P.; Suri, R. K.

    2000-01-01

    Design conditions based on the meteorological data collected at two weather stations located less than 10 km away from each other within Kuwait City are presented for dry-bulb temperature (DBT) and web-bulb temperature (WBT) prioritization...

  9. Prediction of rodent carcinogenic potential of naturally occurring chemicals in the human diet using high-throughput QSAR predictive modeling

    SciTech Connect (OSTI)

    Valerio, Luis G. . E-mail: luis.valerio@FDA.HHS.gov; Arvidson, Kirk B.; Chanderbhan, Ronald F.; Contrera, Joseph F.

    2007-07-01

    Consistent with the U.S. Food and Drug Administration (FDA) Critical Path Initiative, predictive toxicology software programs employing quantitative structure-activity relationship (QSAR) models are currently under evaluation for regulatory risk assessment and scientific decision support for highly sensitive endpoints such as carcinogenicity, mutagenicity and reproductive toxicity. At the FDA's Center for Food Safety and Applied Nutrition's Office of Food Additive Safety and the Center for Drug Evaluation and Research's Informatics and Computational Safety Analysis Staff (ICSAS), the use of computational SAR tools for both qualitative and quantitative risk assessment applications are being developed and evaluated. One tool of current interest is MDL-QSAR predictive discriminant analysis modeling of rodent carcinogenicity, which has been previously evaluated for pharmaceutical applications by the FDA ICSAS. The study described in this paper aims to evaluate the utility of this software to estimate the carcinogenic potential of small, organic, naturally occurring chemicals found in the human diet. In addition, a group of 19 known synthetic dietary constituents that were positive in rodent carcinogenicity studies served as a control group. In the test group of naturally occurring chemicals, 101 were found to be suitable for predictive modeling using this software's discriminant analysis modeling approach. Predictions performed on these compounds were compared to published experimental evidence of each compound's carcinogenic potential. Experimental evidence included relevant toxicological studies such as rodent cancer bioassays, rodent anti-carcinogenicity studies, genotoxic studies, and the presence of chemical structural alerts. Statistical indices of predictive performance were calculated to assess the utility of the predictive modeling method. Results revealed good predictive performance using this software's rodent carcinogenicity module of over 1200 chemicals, comprised primarily of pharmaceutical, industrial and some natural products developed under an FDA-MDL cooperative research and development agreement (CRADA). The predictive performance for this group of dietary natural products and the control group was 97% sensitivity and 80% concordance. Specificity was marginal at 53%. This study finds that the in silico QSAR analysis employing this software's rodent carcinogenicity database is capable of identifying the rodent carcinogenic potential of naturally occurring organic molecules found in the human diet with a high degree of sensitivity. It is the first study to demonstrate successful QSAR predictive modeling of naturally occurring carcinogens found in the human diet using an external validation test. Further test validation of this software and expansion of the training data set for dietary chemicals will help to support the future use of such QSAR methods for screening and prioritizing the risk of dietary chemicals when actual animal data are inadequate, equivocal, or absent.

  10. Energetic materials at extreme conditions

    E-Print Network [OSTI]

    Millar, David Iain Archibald

    2011-06-27

    In order to effectively model the behaviour of energetic materials under operational conditions it is essential to obtain detailed structural information for these compounds at elevated temperature and/or pressures. The ...

  11. When Does Aid Conditionality Work?

    E-Print Network [OSTI]

    Montinola, Gabriella R.

    2010-01-01

    GR. Aid conditionality: does foreign aid support autocrats,New York: Routledge; 1998. Knack S. Does foreign aid promotePress; 2000. Remmer KL. Does foreign aid promote the

  12. Achronal averaged null energy condition

    SciTech Connect (OSTI)

    Graham, Noah; Olum, Ken D. [Department of Physics, Middlebury College, Middlebury, Vermont 05753 (United States) and Center for Theoretical Physics, Laboratory for Nuclear Science, and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155 (United States)

    2007-09-15

    The averaged null energy condition (ANEC) requires that the integral over a complete null geodesic of the stress-energy tensor projected onto the geodesic tangent vector is never negative. This condition is sufficient to prove many important theorems in general relativity, but it is violated by quantum fields in curved spacetime. However there is a weaker condition, which is free of known violations, requiring only that there is no self-consistent spacetime in semiclassical gravity in which ANEC is violated on a complete, achronal null geodesic. We indicate why such a condition might be expected to hold and show that it is sufficient to rule out closed timelike curves and wormholes connecting different asymptotically flat regions.

  13. Desire, belief, and conditional belief

    E-Print Network [OSTI]

    Etlin, David Jeffrey

    2008-01-01

    This dissertation studies the logics of value and conditionals, and the question of whether they should be given cognitivist analyses. Emotivist theories treat value judgments as expressions of desire, rather than beliefs ...

  14. Energy Exchange Terms and Conditions

    Broader source: Energy.gov [DOE]

    We will be requesting that participants acknowledge that they have read these terms and conditions at the time of registration (also included in the online registration form) and at the time of printing their badges on-site.

  15. Unvented, Conditioned Attics - Building America Top Innovation...

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

    Unvented, Conditioned Attics - Building America Top Innovation Unvented, Conditioned Attics - Building America Top Innovation This photo shows an attic that is conditioned...

  16. Extreme Conditions Modeling Workshop Report

    SciTech Connect (OSTI)

    Coe, R. G.; Neary, V. S.; Lawson, M. J.; Yu, Y.; Weber, J.

    2014-07-01

    Sandia National Laboratories (SNL) and the National Renewable Energy Laboratory (NREL) hosted the Wave Energy Converter (WEC) Extreme Conditions Modeling (ECM) Workshop in Albuquerque, NM on May 13th-14th, 2014. The objective of the workshop was to review the current state of knowledge on how to model WECs in extreme conditions (e.g. hurricanes and other large storms) and to suggest how U.S. Department of Energy (DOE) and national laboratory resources could be used to improve ECM methods for the benefit of the wave energy industry.

  17. Spacetime Averaged Null Energy Condition

    E-Print Network [OSTI]

    Douglas Urban; Ken D. Olum

    2010-06-13

    The averaged null energy condition has known violations for quantum fields in curved space, even if one considers only achronal geodesics. Many such examples involve rapid variation in the stress-energy tensor in the vicinity of the geodesic under consideration, giving rise to the possibility that averaging in additional dimensions would yield a principle universally obeyed by quantum fields. However, after discussing various procedures for additional averaging, including integrating over all dimensions of the manifold, we give a class of examples that violate any such averaged condition.

  18. Spacetime averaged null energy condition

    SciTech Connect (OSTI)

    Urban, Douglas; Olum, Ken D.

    2010-06-15

    The averaged null energy condition has known violations for quantum fields in curved space, even when one considers only achronal geodesics. Many such examples involve rapid variation in the stress-energy tensor in the vicinity of the geodesic under consideration, giving rise to the possibility that averaging in additional dimensions would yield a principle universally obeyed by quantum fields. However, after discussing various procedures for additional averaging, including integrating over all dimensions of the manifold, we give here a class of examples that violate any such averaged condition.

  19. Status Conditions of Self Evaluation

    E-Print Network [OSTI]

    Berger, Joseph; Zeldtich, Morris Jr; Anderson, Bo; Cohen, Bernard P

    2015-07-28

    /plain; charset=UTF-8 Status Conditions of Self-Evaluation by Joseph Berger Morris Zelditch, Jr. Bo Anderson Bernard Cohen This paper was supported in part by NSF grant #G23990, for the study of authority and evaluations, and in part by NSF grant #GS...

  20. Blimp-1{delta}exon7: A naturally occurring Blimp-1 deletion mutant with auto-regulatory potential

    SciTech Connect (OSTI)

    Schmidt, Doris; Nayak, Arnab; Schumann, Julia E.; Schimpl, Anneliese; Berberich, Ingolf Berberich-Siebelt, Friederike

    2008-12-10

    Blimp-1 is a master regulator of terminal B cell differentiation and plays a pivotal role in various developmental processes. In addition to full length Blimp-1, a Blimp-1 mRNA lacking exon 7 (Blimp-1{delta}7) has been described to occur in murine B cells. The activity and function of the mutant mRNA-encoded protein (Blimp-1{delta}7), lacking three crucial zinc fingers necessary for DNA interaction, is completely unknown. Since isoforms of other prdm family proteins affect each other's functions, we wondered whether Blimp-1{delta}7 still plays a role in B cells, independent of direct DNA binding. In this study, we found that Blimp-1{delta}7 is preferentially expressed in naive CD19{sup +} B cells. A fraction of Blimp-1{delta}7 migrates to the nucleus, colocalizes with HDAC2 and is found at sites of repressed chromatin, although it does not bind to the Blimp-1 DNA consensus site. Unexpectedly, Blimp-1 and Blimp-1{delta}7 homodimerize as well as heterodimerize with each other. Ectopic expression of Blimp-1{delta}7 in WEHI 231 cells, a Blimp-1-negative murine lymphoma line, leads to cessation of proliferation and enhancement of apoptosis. Importantly, LPS-induced differentiation is suppressed in the presence of Blimp-1{delta}7. This is in agreement with our finding that Blimp-1{delta}7 interferes with endogenous Blimp-1 expression. Thus, our data suggest an auto-regulatory mechanism of Blimp-1 activation.

  1. Elevated concentrations of U and co-occurring metals in abandoned mine wastes in a northeastern Arizona Native American community

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

    Blake, Johanna M.; Avasarala, Sumant; Artyushkova, Kateryna; Ali, Abdul -Mehdi S.; Brearley, Adrian J.; Shuey, Christopher; Robinson, Wm. Paul; Nez, Christopher; Bill, Sadie; Lewis, Johnnye; et al

    2015-07-09

    The chemical interactions of U and co-occurring metals in abandoned mine wastes in a Native American community in northeastern Arizona were investigated using spectroscopy, microscopy and aqueous chemistry. The concentrations of U (67169 ?g L1) in spring water samples exceed the EPA maximum contaminant limit of 30 ?g L1. Elevated U (6,614 mg kg1), V (15,814 mg kg1), and As (40 mg kg1) concentrations were detected in mine waste solids. Spectroscopy (XPS and XANES) solid analyses identified U (VI), As (-I and III) and Fe (II, III). Linear correlations for the release of U vs V and As vs Femorewere observed for batch experiments when reacting mine waste solids with 10 mM ascorbic acid (~pH 3.8) after 264 h. The release of U, V, As, and Fe was at least 4-fold lower after reaction with 10 mM bicarbonate (~pH 8.3). These results suggest that UV mineral phases similar to carnotite [K2(UO2)2V2O8] and AsFe-bearing phases control the availability of U and As in these abandoned mine wastes. Elevated concentrations of metals are of concern due to human exposure pathways and exposure of livestock currently ingesting water in the area. This study contributes to understanding the occurrence and mobility of metals in communities located close to abandoned mine waste sites.less

  2. Thermoluminescence (TL) Analysis and Fading Studies of Naturally Occurring Salt Irradiated by 500 mGy Gamma Rays

    SciTech Connect (OSTI)

    Tiwari, Ramesh Chandra; Pau, Kham Suan [Department of Physics, Mizoram University: Tanhril Campus, Aizawl-796004, Mizoram (India)

    2011-10-20

    The aim of the present study was to investigate the potential of the naturally occurring salt for the dosimetry purposes, using TL. The fine powder samples (20 mg) were irradiated by {gamma}- rays from 500 mGy to 2500 mGy by using Theratron-780C Cobalt-60 source, however, this paper discusses about 500 mGy only. The TL glow curve peak parameters were studied by using Chen's peak shape equation. TL glow curves were compared with fitted curves using glow curve deconvolution (GCD) method by using Kitis expression. The kinetic parameter values (E, b and s) so calculated, are in good agreement with those available in literature. The calculated energy values were also verified by using various heating rate (VHR) method. {chi}{sup 2} test and figure of merit (FOM) calculation was done to accept the goodness of fit between the curves. Fading studies of the sample showed a good fitting between the curves. The analysis suggests that natural salt should be considered for dosimetry purposes.

  3. Condition assessment of nonlinear processes

    DOE Patents [OSTI]

    Hively, Lee M. (Philadelphia, TN); Gailey, Paul C. (Athens, OH); Protopopescu, Vladimir A. (Knoxville, TN)

    2002-01-01

    There is presented a reliable technique for measuring condition change in nonlinear data such as brain waves. The nonlinear data is filtered and discretized into windowed data sets. The system dynamics within each data set is represented by a sequence of connected phase-space points, and for each data set a distribution function is derived. New metrics are introduced that evaluate the distance between distribution functions. The metrics are properly renormalized to provide robust and sensitive relative measures of condition change. As an example, these measures can be used on EEG data, to provide timely discrimination between normal, preseizure, seizure, and post-seizure states in epileptic patients. Apparatus utilizing hardware or software to perform the method and provide an indicative output is also disclosed.

  4. Geometric conditions for robust stability

    E-Print Network [OSTI]

    Chapellat, Herve?

    1987-01-01

    ) Michael T. Lo gnecker (Member) Jo W. Howze (Head of Department) December 1987 ABSTRACT Ceometric Conditions for Robust Stability (Decenrber 1987) Herve Chapellat, B. S. , E. N. S. T. (Paris) Chair of Advisory Committee: Dr. S. P. Bhsttacharyya.... Georghiades and M. T. Longnecker for their comments and for taking time in reviewing this thesis. Finally, I wish to express deep gratitude to my former school in Paris, the Ecole ?ationale Supericure des Telecornrnurdcations (E. lV. S. T. ), that allosved...

  5. Report on an explosion which occured on 5th May, 1930, at the works of MESSRS. J.BIBBY & SONS, LTD, Liverpool

    E-Print Network [OSTI]

    Peacock, H J

    1930-01-01

    Report on an explosion which occured on 5th May, 1930, at the works of MESSRS. J.BIBBY & SONS, LTD, Liverpool...

  6. Radiological Impact Associated to Technologically Enhanced Naturally Occurring Radioactive Materials (TENORM) from Coal-Fired Power Plants Emissions - 13436

    SciTech Connect (OSTI)

    Dinis, Maria de Lurdes; Fiuza, Antonio; Soeiro de Carvalho, Jose; Gois, Joaquim [Geo-Environment and Resources Research Centre (CIGAR), Porto University, Faculty of Engineering - FEUP, Rua Dr. Roberto Frias, 4200-465 Porto (Portugal)] [Geo-Environment and Resources Research Centre (CIGAR), Porto University, Faculty of Engineering - FEUP, Rua Dr. Roberto Frias, 4200-465 Porto (Portugal); Meira Castro, Ana Cristina [School of Engineering Polytechnic of Porto - ISEP, Rua Dr. Antonio Bernardino de Almeida, 431, 4200-072, Porto (Portugal)] [School of Engineering Polytechnic of Porto - ISEP, Rua Dr. Antonio Bernardino de Almeida, 431, 4200-072, Porto (Portugal)

    2013-07-01

    Certain materials used and produced in a wide range of non-nuclear industries contain enhanced activity concentrations of natural radionuclides. In particular, electricity production from coal is one of the major sources of increased human exposure to naturally occurring radioactive materials. A methodology was developed to assess the radiological impact due to natural radiation background. The developed research was applied to a specific case study, the Sines coal-fired power plant, located in the southwest coastline of Portugal. Gamma radiation measurements were carried out with two different instruments: a sodium iodide scintillation detector counter (SPP2 NF, Saphymo) and a gamma ray spectrometer with energy discrimination (Falcon 5000, Canberra). Two circular survey areas were defined within 20 km of the power plant. Forty relevant measurements points were established within the sampling area: 15 urban and 25 suburban locations. Additionally, ten more measurements points were defined, mostly at the 20-km area. The registered gamma radiation varies from 20 to 98.33 counts per seconds (c.p.s.) corresponding to an external gamma exposure rate variable between 87.70 and 431.19 nGy/h. The highest values were measured at locations near the power plant and those located in an area within the 6 and 20 km from the stacks. In situ gamma radiation measurements with energy discrimination identified natural emitting nuclides as well as their decay products (Pb-212, Pb-2142, Ra-226, Th-232, Ac-228, Th-234, Pa-234, U- 235, etc.). According to the results, an influence from the stacks emissions has been identified both qualitatively and quantitatively. The developed methodology accomplished the lack of data in what concerns to radiation rate in the vicinity of Sines coal-fired power plant and consequently the resulting exposure to the nearby population. (authors)

  7. Conditioned changes in pain reactivity: conditioned stimuli elicit hypoalgesia under a wide range of test conditions

    E-Print Network [OSTI]

    Illich, Paul Anthony

    1990-01-01

    in pain reactivity. In four experiments I attempt to isolate the variables which determine the direction of the conditioned response. In all experiments, I assessed the impact of a previously paired stimulus (CSt) and a nonreinforced stimulus (CS...-) on pain reactivity as measured by both tail-flick latencies and shock-induced vocalization. Experiment 1 assessed whether the amount of training plays a critical role. I found that the CS+ elicited longer tail-flick latencies (hypoalgesia) irrespective...

  8. Building America Webinar: High Performance Space Conditioning...

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

    II - Design Options for Locating Ducts within Conditioned Space Building America Webinar: High Performance Space Conditioning Systems, Part II - Design Options for Locating Ducts...

  9. Space Conditioning Standing Technical Committee Strategic Plan...

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

    Space Conditioning Standing Technical Committee Strategic Plan Space Conditioning Standing Technical Committee Strategic Plan This strategic plan document outlines the gaps,...

  10. President Obama Announces $400 Million Conditional Commitment...

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

    President Obama Announces 400 Million Conditional Commitment Offer to Support Solar Panel Manufacturing President Obama Announces 400 Million Conditional Commitment Offer to...

  11. In-Situ Sampling and Characterization of Naturally Occurring Marine Methane Hydrate Using the D/V JOIDES Resolution

    SciTech Connect (OSTI)

    Frank R. Rack

    2006-09-20

    Cooperative Agreement DE-FC26-01NT41329 between Joint Oceanographic Institutions and DOE-NETL was divided into two phases based on successive proposals and negotiated statements of work pertaining to activities to sample and characterize methane hydrates on ODP Leg 204 (Phase 1) and on IODP Expedition 311 (Phase 2). The Phase 1 Final Report was submitted to DOE-NETL in April 2004. This report is the Phase 2 Final Report to DOE-NETL. The primary objectives of Phase 2 were to sample and characterize methane hydrates using the systems and capabilities of the D/V JOIDES Resolution during IODP Expedition 311, to enable scientists the opportunity to establish the mass and distribution of naturally occurring gas and gas hydrate at all relevant spatial and temporal scales, and to contribute to the DOE methane hydrate research and development effort. The goal of the work was to provide expanded measurement capabilities on the JOIDES Resolution for a dedicated hydrate cruise to the Cascadia continental margin off Vancouver Island, British Columbia, Canada (IODP Expedition 311) so that hydrate deposits in this region would be well characterized and technology development continued for hydrate research. IODP Expedition 311 shipboard activities on the JOIDES Resolution began on August 28 and were concluded on October 28, 2005. The statement of work for this project included three primary tasks: (1) research management oversight, provided by JOI; (2) mobilization, deployment and demobilization of pressure coring and core logging systems, through a subcontract with Geotek Ltd.; and, (3) mobilization, deployment and demobilization of a refrigerated container van that will be used for degassing of the Pressure Core Sampler and density logging of these pressure cores, through a subcontract with the Texas A&M Research Foundation (TAMRF). Additional small tasks that arose during the course of the research were included under these three primary tasks in consultation with the DOE-NETL Program Manager. All tasks outlined in the original statement of work were accomplished except for the deployment and use of the X-ray CT system under Subtask 2-2. This reduction in scope provided resources that were applied to other activities to support the overall project. Post-expedition analysis of results and report writing will continue beyond this reporting period, however, all field deployments associated with this project have been successfully concluded as of this writing.

  12. In-Situ Sampling and Characterization of Naturally Occurring Marine Methane Hydrate Using the D/V JOIDES Resolution

    SciTech Connect (OSTI)

    Rack, Frank; Bohrmann, Gerhard; Trehu, Anne; Storms, Michael; Schroeder, Derryl

    2002-09-30

    The primary accomplishment of the JOI Cooperative Agreement with DOE/NETL in this quarter was the deployment of tools and measurement systems on ODP Leg 204 to study hydrate deposits on Hydrate Ridge, offshore Oregon from July through September, 2002. During Leg 204, we cored and logged 9 sites on the Oregon continental margin to determine the distribution and concentration of gas hydrates in an accretionary ridge and adjacent slope basin, investigate the mechanisms that transport methane and other gases into the gas hydrate stability zone (GHSZ), and obtain constraints on physical properties of hydrates in situ. A 3D seismic survey conducted in 2000 provided images of potential subsurface fluid conduits and indicated the position of the GHSZ throughout the survey region. After coring the first site, we acquired Logging-While-Drilling (LWD) data at all but one site to provide an overview of downhole physical properties. The LWD data confirmed the general position of key seismic stratigraphic horizons and yielded an initial estimate of hydrate concentration through the proxy of in situ electrical resistivity. These records proved to be of great value in planning subsequent coring. The second new hydrate proxy to be tested was infrared thermal imaging of cores on the catwalk as rapidly as possible after retrieval. The thermal images were used to identify hydrate samples and to map estimate the distribution and texture of hydrate within the cores. Geochemical analyses of interstitial waters and of headspace and void gases provide additional information on the distribution and concentration of hydrate within the stability zone, the origin and pathway of fluids into and through the GHSZ, and the rates at which the process of gas hydrate formation is occurring. Bio- and lithostratigraphic description of cores, measurement of physical properties, and in situ pressure core sampling and thermal measurements complement the data set, providing ground-truth tests of inferred physical and sedimentological properties. Among the most interesting preliminary results are: (1) the discovery that gas hydrates are distributed through a broad depth range within the GHSZ and that different physical and chemical proxies for hydrate distribution and concentration give generally consistent results; (2) evidence for the importance of sediment properties for controlling the migration of fluids in the accretionary complex; (3) geochemical indications that the gas hydrate system at Hydrate Ridge contains significant concentrations of higher order hydrocarbons and that fractionation and mixing signals will provide important constraints on gas hydrate dynamics; and (4) the discovery of very high chlorinity values that extend for at least 10 mbsf near the summit, indicating that hydrate formation here must be very rapid.

  13. Journal of Power Sources 162 (2006) 388399 Model-based condition monitoring of PEM fuel cell using

    E-Print Network [OSTI]

    Ding, Yu

    2006-01-01

    Journal of Power Sources 162 (2006) 388399 Model-based condition monitoring of PEM fuel cell using of polymer electrolyte membrane (PEM) fuel cell systems, temporary faults in such systems still might occur/uncertainty of the fuel cell system, and the measurement noise. In this research, we propose a model-based condition

  14. Hot conditioning equipment conceptual design report

    SciTech Connect (OSTI)

    Bradshaw, F.W., Westinghouse Hanford

    1996-08-06

    This report documents the conceptual design of the Hot Conditioning System Equipment. The Hot conditioning System will consist of two separate designs: the Hot Conditioning System Equipment; and the Hot Conditioning System Annex. The Hot Conditioning System Equipment Design includes the equipment such as ovens, vacuum pumps, inert gas delivery systems, etc.necessary to condition spent nuclear fuel currently in storage in the K Basins of the Hanford Site. The Hot Conditioning System Annex consists of the facility of house the Hot Conditioning System. The Hot Conditioning System will be housed in an annex to the Canister Storage Building. The Hot Conditioning System will consist of pits in the floor which contain ovens in which the spent nuclear will be conditioned prior to interim storage.

  15. IN-SITU SAMPLING AND CHARACTERIZATION OF NATURALLY OCCURRING MARINE METHANE HYDRATE USING THE D/V JOIDES RESOLUTION

    SciTech Connect (OSTI)

    Frank R. Rack; Tim Francis; Peter Schultheiss; Philip E. Long; Barry M. Freifeld

    2005-04-01

    The primary activities accomplished during this quarter were continued efforts to develop plans for Phase 2 of this cooperative agreement based on the evolving operational planning for IODP Expedition 311, which will use the JOIDES Resolution to study marine methane hydrates along the Cascadia margin, offshore Vancouver Island. IODP Expedition 311 has been designed to further constrain the models for the formation of marine gas hydrate in subduction zone accretionary prisms. The objectives include characterizing the deep origin of the methane, its upward transport, its incorporation in gas hydrate, and its subsequent loss to the seafloor. The main attention of this expedition is on the widespread seafloor-parallel layer of dispersed gas hydrate located just above the base of the predicted stability field. In a gas hydrate formation model, methane is carried upward through regional sediment or small-scale fracture permeability, driven by the tectonic consolidation of the accretionary prism. The upward moving methane is incorporated into the gas hydrate clathrate as it enters the methane hydrate stability zone. Also important is the focusing of a portion of the upward methane flux into localized plumes or channels to form concentrations of near-seafloor gas hydrate. The amount of gas hydrate in local concentrations near the seafloor is especially important for understanding the response of marine gas hydrate to climate change. The expedition includes coring and downhole measurements at five sites across the Northern Cascadia accretionary prism. The sites will track the history of methane in an accretionary prism from (1) its production by mainly microbiological processes over a thick sediment vertical extent, (2) its upward transport through regional or locally focused fluid flow, (3) its incorporation in the regional hydrate layer above the BSR or in local concentrations at or near the seafloor, (4) methane loss from the hydrate by upward diffusion, and (5) methane oxidation and incorporation in seafloor carbonate, or expulsion to the ocean. This expedition builds on the previous Cascadia gas hydrate drilling of ODP Leg 146 and on more recent ODP Leg 204 off Oregon. Important experiments being considered for DOE/NETL funding as part of the JOI cooperative agreement include, (1) Logging-While-Drilling/Measurements-While-Drilling (LWD/MWD), (2) Pressure Core Sampling (PCS/HYACINTH) of gas hydrate, and fluid recovery under in situ conditions, (3) X-ray CT logging of whole cores under in situ conditions, and (4) Infrared thermal imaging of whole round cores to map temperature variations resulting from the presence of hydrate. Preliminary budget estimates have been made for each of these tasks and discussions are ongoing with DOE/NETL program managers to develop a final plan that can be implemented within the constraints of the available funding and logistical considerations.

  16. In-Situ Sampling and Characterization of Naturally Occuring Marine Methane Hydrate Using the D/V JOIDES Resolution

    SciTech Connect (OSTI)

    Rack, Frank; Guerin, Gilles; Goldberg, David

    2003-12-31

    The primary accomplishments of the JOI Cooperative Agreement with DOE/NETL in this quarter were that: (1) Leg 204 scientific party members presented preliminary results and operational outcomes of ODP Leg 204 at the American Geophysical Union Fall meeting, which was held in San Francisco, CA; and, (2) a report was prepared by Dr. Gilles Guerin and David Goldberg from Lamont-Doherty Earth Observatory of Columbia University on their postcruise evaluation of the data, tools and measurement systems that were used for vertical seismic profiling (VSP) experiments during ODP Leg 204. The VSP report is provided herein. Intermediate in scale and resolution between the borehole data and the 3-D seismic surveys, the Vertical Seismic Profiles (VSP) carried during Leg 204 were aimed at defining the gas hydrate distribution on hydrate ridge, and refining the signature of gas hydrate in the seismic data. VSP surveys were attempted at five sites, following completion of the conventional logging operations. Bad hole conditions and operational difficulties did not allow to record any data in hole 1245E, but vertical and constant offset VSP were successful in holes 1244E, 1247B and 1250F, and walk-away VSP were successfully completed in holes 1244E, 1250F and 1251H. Three different tools were used for these surveys. The vertical VSP provided the opportunity to calculate interval velocity that could be compared and validated with the sonic logs in the same wells. The interval velocity profiles in Holes 1244E and 1247B are in very good agreement with the sonic logs. Information about the Leg 204 presentations at the AGU meeting are included in a separate Topical Report, which has been provided to DOE/NETL in addition to this Quarterly Report. Work continued on analyzing data collected during ODP Leg 204 and preparing reports on the outcomes of Phase 1 projects as well as developing plans for Phase 2.

  17. IN-SITU SAMPLING AND CHARACTERIZATION OF NATURALLY OCCURRING MARINE METHANE HYDRATE USING THE D/V JOIDES RESOLUTION

    SciTech Connect (OSTI)

    Rack, Frank R.; Dickens, Gerald; Ford, Kathryn; Schroeder, Derryl; Storms, Michael

    2002-08-01

    The primary accomplishment of the JOI Cooperative Agreement with DOE/NETL in this quarter was the preparation of tools and measurement systems for deployment, testing and use on ODP Leg 204, which will study hydrate deposits on Hydrate Ridge, offshore Oregon. Additional accomplishments were related to the postcruise evaluation of tools and measurements systems used on ODP Leg 201 along the Peru margin from January through March, 2002. The operational results from the use of the Pressure Core Sampler (PCS) tool and the PCS Gas Manifold on ODP Leg 201 are evaluated in this progress report in order to prepare for the upcoming deployments on ODP Leg 204 in July, 2002. The PCS was deployed 17 times during ODP Leg 201 and successfully retrieved cores from a broad range of lithologies and sediment depths along the Peru margin. Eleven deployments were entirely successful, collecting between 0.5 and 1.0 meters of sediment at greater than 75% of hydrostatic pressure. The PCS gas manifold was used in conjunction with the Pressure Core Sampler (PCS) throughout ODP Leg 201 to measure the total volume and composition of gases recovered in sediment cores associated with methane gas hydrates. The FUGRO Pressure Corer (FPC), one of the HYACE/HYACINTH pressure coring tools, was also deployed on the D/V JOIDES Resolution during ODP Legs 201 to field-test this coring system at three shallow-water sites located offshore Peru. The field-testing of these tools provides a corollary benefit to DOE/NETL at no cost to this project. The testing of these tools on the D/V JOIDES Resolution was negotiated as part of a cooperative agreement between JOI/ODP and the HYACINTH partners. The DVTP, DVTP-P, APC-methane, and APC-Temperature tools (ODP memory tools) were used extensively during ODP Leg 201. The data obtained from the successful deployments of these tools is still being evaluated by the scientists and engineers involved in this testing; however, preliminary results are presented in this report. An infrared-thermal imaging system (IR-TIS) was deployed for the first time on ODP Leg 201. This system was used to identify methane hydrate intervals in the recovered cores. Initial discussions of these experiments are provided in this report. This report is an overview of the field measurements made on recovered sediment cores and the downhole measurements made during ODP Leg 201. These results are currently being used to incorporate the ''lessons learned'' from these deployments to prepare for a dedicated ODP leg to study the characteristics of naturally-occurring hydrates in the subsurface environment of Hydrate Ridge, offshore Oregon during ODP Leg 204, which will take place from July through September, 2002.

  18. Wind Turbine Drivetrain Condition Monitoring (Presentation)

    SciTech Connect (OSTI)

    Sheng, S.

    2011-10-01

    This presentation details the Gearbox Reliability Collaborative Condition Monitoring program at NREL.

  19. ASSESSMENT OF CABLE AGING USING CONDITION MONITORING TECHNIQUES

    SciTech Connect (OSTI)

    GROVE,E.; LOFARO,R.; SOO,P.; VILLARAN,M.; HSU,F.

    2000-04-06

    Electric cables in nuclear power plants suffer degradation during service as a result of the thermal and radiation environments in which they are installed. Instrumentation and control cables are one type of cable that provide an important role in reactor safety. Should the polymeric cable insulation material become embrittled and cracked during service, or during a loss-of-coolant-accident (LOCA) and when steam and high radiation conditions are anticipated, failure could occur and prevent the cables from fulfilling their intended safety function(s). A research program is being conducted at Brookhaven National Laboratory to evaluate condition monitoring (CM) techniques for estimating the amount of cable degradation experienced during in-plant service. The objectives of this program are to assess the ability of the cables to perform under a simulated LOCA without losing their ability to function effectively, and to identify CM techniques which may be used to determine the effective lifetime of cables. The cable insulation materials tested include ethylene propylene rubber (EPR) and cross-linked polyethylene (XLPE). Accelerated aging (thermal and radiation) to the equivalent of 40 years of service was performed, followed by exposure to simulated LOCA conditions. The effectiveness of chemical, electrical, and mechanical condition monitoring techniques are being evaluated. Results indicate that several of these methods can detect changes in material parameters with increasing age. However, each has its limitations, and a combination of methods may provide an effective means for trending cable degradation in order to assess the remaining life of cables.

  20. Megatides in the Arctic Ocean under glacial conditions Stephen D. Griffiths,1

    E-Print Network [OSTI]

    Peltier, W. Richard

    Megatides in the Arctic Ocean under glacial conditions Stephen D. Griffiths,1 and W. R. Peltier1's climate and ocean circulation. Citation: Griffiths, S. D., and W. R. Peltier (2008), Megatides occurred approx- imately 26,000 years ago, since the bathymetric changes are now well constrained [Peltier

  1. In-Situ Sampling and Characterization of Naturally Occurring Marine Methane Hydrate Using the D/V JOIDES Resolution

    SciTech Connect (OSTI)

    Rack, Frank; Schroeder, Derryl; Storms, Michael

    2001-03-31

    The primary accomplishments of the JOI Cooperative Agreement with DOE/NETL in this quarter were the deployment of tools and measurement systems for testing on ODP Leg 201, which is intended to study hydrate deposits on the Peru margin as part of other scientific investigations. Additional accomplishments were related to the continuing evolution of tools and measurements systems in preparation for deployment on ODP Leg 204, Hydrate Ridge, offshore Oregon in July 2002. The design for PCS Gas Manifold was finalized and parts were procured to assemble the gas manifold and deploy this system with the Pressure Core Sampler (PCS) tool on ODP Leg 201. The PCS was deployed 17 times during ODP Leg 201 and successfully retrieved cores from a broad range of lithologies and sediment depths along the Peru margin. Eleven deployments were entirely successful, collecting between 0.5 and 1.0 meters of sediment at greater than 75% of hydrostatic pressure. The PCS gas manifold was used in conjunction with the Pressure Core Sampler (PCS) throughout ODP Leg 201 to measure the total volume and composition of gases recovered in sediment cores associated with methane hydrates. The results of these deployments will be the subject of a future progress report. The FUGRO Pressure Corer (FPC), one of the HYACE/HYACINTH pressure coring tools, and two FUGRO engineers were deployed on the D/V JOIDES Resolution during ODP Legs 201 to field-test this coring system at sites located offshore Peru. The HYACINTH project is a European Union (EU) funded effort to develop tools to characterize methane hydrate and measure physical properties under in-situ conditions. The field-testing of these tools provides a corollary benefit to DOE/NETL at no cost to this project. The opportunity to test these tools on the D/V JOIDES Resolution was negotiated as part of a cooperative agreement between JOI/ODP and the HYACINTH partners. The DVTP, DVTP-P, APC-methane, and APC-Temperature tools (ODP memory tools) were deployed onboard the R/V JOIDES Resolution and used extensively during ODP Leg 201. Preliminary results indicate successful deployments of these tools. An infrared-thermal imaging system (IR-TIS) was delivered to JOI/ODP for testing and use on ODP Leg 201 to identify methane hydrate intervals in the recovered cores. The results of these experiments will be the subject of a future progress report. This report presents an overview of the primary methods used for deploying the ODP memory tools and PCS on ODP Leg 201 and the preliminary operational results of this leg. Discussions regarding the laboratory analysis of the recovered cores and downhole measurements made during these deployments will be covered in a future progress report.

  2. Interim report on the Causes of and Circumstances attending the Explosion which occured at Whitehaven William Colliery, Cumberland, on the 15th August, 1947

    E-Print Network [OSTI]

    Bryan, A. M.

    MINISTRY OF FUEL AND POWER INTERIM REPORT On the Causes of and Circumstances attending the Explosion which occurred at Whitehaven "William" Colliery, Cumberland, on the 15th August, 1947 By A. M. BRYAN, Esq., J.P., ...

  3. Discrete Elements Method: A New Kind of Initial Conditions - Tetrahedral Packing of Balls

    E-Print Network [OSTI]

    Mark A. Tsayger

    2014-12-15

    The Paper discusses the use of the regular packing of identical balls with the coordination number 4 as a model of a medium consisting of fluid and solid particles in the conditions of fluidization. It is proposed to use the examined packing of balls as an initial condition for the calculations by the Discrete Elements Method (DEM) in technological processes in the fluidized bed in industry, as well as in the modeling of processes that occur in hydraulic and pneumatic transport of granular materials. Filtration properties of such packing required for its use as an initial condition in calculations by DEM are estimated.

  4. Discrete Elements Method: A New Kind of Initial Conditions - Tetrahedral Packing of Balls

    E-Print Network [OSTI]

    Mark A. Tsayger

    2015-10-13

    The Paper discusses the use of the regular packing of identical balls with the coordination number 4 as a model of a medium consisting of fluid and solid particles in the conditions of fluidization. It is proposed to use the examined packing of balls as an initial condition for the calculations by the Discrete Elements Method (DEM) in technological processes in the fluidized bed in industry, as well as in the modeling of processes that occur in hydraulic and pneumatic transport of granular materials. Filtration properties of such packing required for its use as an initial condition in calculations by DEM are estimated.

  5. Credit Conditions and Stock Return Predictability

    E-Print Network [OSTI]

    Park, Heungju

    2012-10-19

    Survey on Bank Lending Practices. Using Standards, this study investigates whether the aggregate credit conditions predict the expected returns and volatility of the stock market. The first essay, "Credit Conditions and Expected Stock Returns," analyzes...

  6. Conditioning circuit for temperature and strain measurement

    E-Print Network [OSTI]

    Patel, Aashit Mahendra

    1997-01-01

    conventional techniques. The technique was originally developed at NASA, but has been slightly modified here to obtain the best possible results from the conditioning circuit. The core of the conditioning circuit is formed by a precision switched capacitor...

  7. Heating, Ventilation, and Air Conditioning Design

    E-Print Network [OSTI]

    Heating, Ventilation, and Air Conditioning Design Strategy for a Hot-Humid Production Builder P% postconsumer waste #12;iii Heating, Ventilation, and Air Conditioning Design Strategy for a Hot

  8. LANDAU'S NECESSARY DENSITY CONDITIONS FOR LCA GROUPS

    E-Print Network [OSTI]

    Kutyniok, Gitta

    LANDAU'S NECESSARY DENSITY CONDITIONS FOR LCA GROUPS KARLHEINZ GR¨OCHENIG, GITTA KUTYNIOK's conditions to the setting of locally compact abelian (LCA) groups, relying in an analogous way on the basics

  9. Youth Employment in Ghana: Conditions and Determinants

    E-Print Network [OSTI]

    Barrett, Zachary; Berrios, Andrea; He, Yukuai; Larsen, Sean; Novoa, Miguel; Twumasi-Ankrah, Kwame; Vega, Camille

    2015-06-11

    Youth employment, and its limitations, is a pertinent problem that most developing nations face. Youth Employment in Ghana: Conditions and Determinants is a student-led research project that summarizes and analyzes the conditions of youth...

  10. Wind Turbine Drivetrain Condition Monitoring - An Overview

    SciTech Connect (OSTI)

    Sheng, S; Veers, P.

    2011-10-01

    This paper provides an overview of wind turbine drivetrain condition monitoring based on presentations from a condition monitoring workshop organized by the National Renewable Energy Laboratory in 2009 and on additional references.

  11. Building America Webinar: Retrofitting Central Space Conditioning...

    Energy Savers [EERE]

    Webinar: Retrofitting Central Space Conditioning Strategies for Multifamily Buildings - Control strategies to improve hydronic space heating performance Building America Webinar:...

  12. Thermodynamic Origin of the Null Energy Condition

    E-Print Network [OSTI]

    Maulik Parikh; Andrew Svesko

    2015-11-20

    We derive the classical null energy condition, understood as a constraint on the Ricci tensor, from the second law of thermodynamics applied to Bekenstein-Hawking entropy. The derivation provides evidence that the null energy condition, which has usually been regarded as a condition on matter, is fundamentally a property of gravity.

  13. Thermodynamic Origin of the Null Energy Condition

    E-Print Network [OSTI]

    Parikh, Maulik

    2015-01-01

    We derive the classical null energy condition, understood as a constraint on the Ricci tensor, from the second law of thermodynamics applied to Bekenstein-Hawking entropy. The derivation provides evidence that the null energy condition, which has usually been regarded as a condition on matter, is fundamentally a property of gravity.

  14. Reapproaching Ramsey: Conditionals and Iterated Belief Change

    E-Print Network [OSTI]

    Schubart, Christoph

    Reapproaching Ramsey: Conditionals and Iterated Belief Change in the Spirit of AGM Hans Rott Final version of 25 November 2010 Abstract According to the Ramsey Test, conditionals reflect changes of beliefs") has seemed to show that the Ramsey test is not a viable analysis of conditionals if it is combined

  15. Conditional Offer Letter Executive/Senior Administrative

    E-Print Network [OSTI]

    Acton, Scott

    Conditional Offer Letter Web Form Executive/Senior Administrative University Staff Introduction below will generate a standard conditional offer letter based on information entered by the user. This conditional offer letter web form is specific to the hiring of E&SA University Staff employees

  16. Constant Proportion Debt Obligations, Zeno's Paradox, and the Spectacular Financial Crisis of 2008

    E-Print Network [OSTI]

    Richards, Donald St. P.

    designed in 2006 as a new product in the "synthetic" collateralized debt obligation market. CPDOs were-case scenario in which the coin is two-headed, we show that the goal of attaining the Cash-In event in a finite. In the worst-case scenario in which the coin is two-tailed, we prove that the Cash-Out event occurs in exactly

  17. High Energy Efficiency Air Conditioning

    SciTech Connect (OSTI)

    Edward McCullough; Patrick Dhooge; Jonathan Nimitz

    2003-12-31

    This project determined the performance of a new high efficiency refrigerant, Ikon B, in a residential air conditioner designed to use R-22. The refrigerant R-22, used in residential and small commercial air conditioners, is being phased out of production in developed countries beginning this year because of concerns regarding its ozone depletion potential. Although a replacement refrigerant, R-410A, is available, it operates at much higher pressure than R-22 and requires new equipment. R-22 air conditioners will continue to be in use for many years to come. Air conditioning is a large part of expensive summer peak power use in many parts of the U.S. Previous testing and computer simulations of Ikon B indicated that it would have 20 - 25% higher coefficient of performance (COP, the amount of cooling obtained per energy used) than R-22 in an air-cooled air conditioner. In this project, a typical new R-22 residential air conditioner was obtained, installed in a large environmental chamber, instrumented, and run both with its original charge of R-22 and then with Ikon B. In the environmental chamber, controlled temperature and humidity could be maintained to obtain repeatable and comparable energy use results. Tests with Ikon B included runs with and without a power controller, and an extended run for several months with subsequent analyses to check compatibility of Ikon B with the air conditioner materials and lubricant. Baseline energy use of the air conditioner with its original R-22 charge was measured at 90 deg F and 100 deg F. After changeover to Ikon B and a larger expansion orifice, energy use was measured at 90 deg F and 100 deg F. Ikon B proved to have about 19% higher COP at 90 deg F and about 26% higher COP at 100 deg F versus R-22. Ikon B had about 20% lower cooling capacity at 90 deg F and about 17% lower cooling capacity at 100 deg F versus R-22 in this system. All results over multiple runs were within 1% relative standard deviation (RSD). All of these values agree well with previous results and computer simulations of Ikon B performance versus R-22. The lower cooling capacity of Ikon B is not a concern unless a particular air conditioner is near its maximum cooling capacity in application. Typically, oversized A/C systems are installed by contractors to cover contingencies. In the extended run with Ikon B, which lasted about 4.5 months at 100 deg F ambient temperature and 68% compressor on time, the air conditioner performed well with no significant loss of energy efficiency. Post-run analysis of the refrigerant, compressor lubricant oil, compressor, compressor outlet tubing, and the filter/dryer showed minor effects but nothing that was considered significant. The project was very successful. All objectives were achieved, and the performance of Ikon B indicates that it can easily be retrofitted into R-22 air conditioners to give 15 - 20% energy savings and a 1 - 3 year payback of retrofit costs depending on location and use. Ikon B has the potential to be a successful commercial product.

  18. The CFE Treaty and changed conditions in Europe

    SciTech Connect (OSTI)

    Allentuck, J.

    1994-08-01

    The Treaty on Conventional Forces in Europe (CFE) was signed in November 1990 by sixteen nations, members of the North Atlantic Treaty Organization (NATO), and six nations, members of the Warsaw Treaty Organization (WTO). It was resigned to prevent a major surprise attack in Europe by the conventional forces of one Treaty Organization against those of the other and was the first major arms control treaty to address conventional weapons. This paper focuses on how CFE adapted to changes in the military-political situation in Europe which occurred after 1990 and failed to adapt to others. Suggestions are offered on how it might be changed to make it more relevant under these changed conditions.

  19. Data from the Versatile Array of Neutron Detectors at Low Energy (VANDLE) will impact modeling of processes occurring in neutron-rich

    E-Print Network [OSTI]

    Data from the Versatile Array of Neutron Detectors at Low Energy (VANDLE) will impact modeling of processes occurring in neutron-rich environments The energies of beta-delayed neutrons emitted from 25 strong feeding to high-lying states that emit high energy neutrons while others have broad distributions

  20. Life and Times Committee 2011-2012 iTeas occur each Wednesday throughout the Fall and Winter terms. The objective of these social,

    E-Print Network [OSTI]

    Toronto, University of

    Life and Times Committee 2011-2012 iTeas occur each Wednesday throughout the Fall and Winter termsSchool through engagement, connection, and learning. iTeas, Fall 2011 DATE TITLE HOST/DESCRIPTION ROOM and TIME Sept 14 Welcome iTea Welcome by the Kathleen S. (host), the Dean, Chief librarian, MISC, MSGSA Inforum

  1. Lead in Your Drinking Water Lead (Pb) is an extremely toxic heavy metal that unfortunately occurs widely in our environment. The

    E-Print Network [OSTI]

    Maynard, J. Barry

    Lead in Your Drinking Water Lead (Pb) is an extremely toxic heavy metal that unfortunately occurs widely in our environment. The chief sources of exposure are from (1) Lead paint commonly present in house interiors (2) Leaded gasoline soils along major roadways are strongly enriched in lead

  2. 220 BULLETIN OF TB[E UNITED STATES FISH COMMISSION. As to the oysters which you speak of as occurring at one of the Eu-

    E-Print Network [OSTI]

    of as occurring at one of the Eu- rile Islands, if to be sold for immediate consumption, the lurgc ones (adult that these and similar mollusks do not stand heat well. The cool season of the year would be best for the experi- ment

  3. Debt Deflation: Can It Occur? Is It Dangerous? Not long after the U.S. economy exited the 2001 recession, a few pundits sounded the

    E-Print Network [OSTI]

    Ahmad, Sajjad

    Debt Deflation: Can It Occur? Is It Dangerous? Not long after the U.S. economy exited the 2001, a smaller group raises the specter of a debt deflation. What is debt deflation? Is it dangerous? What Is It not arrived, the inflation rate has fallen to within hailing distance of zero. Deflation produces dangerous

  4. 1988 National List of Plant Species that Occur in Wetlands The U.S. Army Corps of Engineers (Corps) as of 2006 has accepted the administrative responsibility for

    E-Print Network [OSTI]

    US Army Corps of Engineers

    1988 National List of Plant Species that Occur in Wetlands The U.S. Army Corps of Engineers (Corps) as of 2006 has accepted the administrative responsibility for the National Wetland Plant List from the U plant lists from their National Wetland Inventory (NWI) web site. The web pages and associated files

  5. Climate Change Lecture (ID:180) This lecture will give an overview of climate changes that have occurred in the past and

    E-Print Network [OSTI]

    Martin, Ralph R.

    Climate Change Lecture (ID:180) Outline This lecture will give an overview of climate changes to understand climate changes that have occurred in the past. This is a lecture based activity with opportunities to ask questions. Further details Students will learn: 1. Different time-scales of climate changes

  6. Does extrusion occur at both tips of the Taiwan collision belt? Insights from active deformation studies in the Ilan Plain and Pingtung Plain regions

    E-Print Network [OSTI]

    Lee, Jian-Cheng

    Does extrusion occur at both tips of the Taiwan collision belt? Insights from active deformation Institut Universitaire de France France c Institute of Applied Geosciences, National Taiwan Ocean University, Keelung, Taiwan, ROC d Institute of Oceanography, National Taiwan University, Taipei, Taiwan, ROC

  7. Machine Design -2 The figure below shows a picture of the splined end of a failed half-shaft. The fatigue failure occurred at the

    E-Print Network [OSTI]

    Battaglia, Francine

    Machine Design - 2 The figure below shows a picture of the splined end of a failed half-shaft. The fatigue failure occurred at the snap-ring groove. The half-shaft transmits engine torque on acceleration = +1617 in-lbf. The half-shaft material is a heat-treated, case-hardened 4340 steel, Sy = 234 kpsi, Sut

  8. Pulmonary macrophages: Phenomena associated with the particle overload'' condition

    SciTech Connect (OSTI)

    Lehnert, B.E.; Sebring, R.J. (Los Alamos National Lab., NM (United States)); Oberdoerster, G. (Rochester Univ., NY (United States))

    1993-01-01

    Numerous lines of evidence support the generalization that alveolar macrophage (AM)-mediated particle clearance, or the transport of particle-containing AM from the alveoli out of the lung via the mucociliary apparatus, is a prominent mechanism that determines the pulmonary retention characteristics of relatively insoluble particles. Studies have also shown that the alveolar deposition of excessive burdens of particles with even low intrinsic cytotoxicity can result in impairments of the AM-mediated panicle clearance mechanism and the development of pathologic disorders including pulmonary fibrosis and lung cancer, at least in the lungs of rats. We briefly review evidence consistent with the idea that the high volumetric loads of particles contained in AM during particle overload conditions underlies their inabilities to translocate from the lung. Using a condition of particle overload brought about by subchronic exposure of rats to ultra-fine titanium dioxide as an experimental model, we have obtained ultrastructural and other evidence that indicates an association between particle overload and: The occurrence of aggregates of particle-containing AM in alveoli, Type II cell hyperplasia in alveoli that contain the AM aggregates, a loss in patent pores of Kohn in alveoli that contain the AM aggregates and show Type II cell hyperplasia, the interstitialization of particles at the sites where these phenomena collectively occur, and the development of fibrosis in alveolar regions where particle interstitialization occurs. The loss of pores of Kohn in the alveoli that contain aggregates of particle-laden AM suggests that these interalveolar pores normally serve as passageways through which AM may migrate to neighboring alveoli as they perform their function of phagocytizing particles that have deposited on the alveolar surface. The pores of Kohn also serve as short-cut pathways for AM to reach the mucociliary apparatus from more distal alveoli.

  9. Pulmonary macrophages: Phenomena associated with the particle ``overload`` condition

    SciTech Connect (OSTI)

    Lehnert, B.E.; Sebring, R.J. [Los Alamos National Lab., NM (United States); Oberdoerster, G. [Rochester Univ., NY (United States)

    1993-05-01

    Numerous lines of evidence support the generalization that alveolar macrophage (AM)-mediated particle clearance, or the transport of particle-containing AM from the alveoli out of the lung via the mucociliary apparatus, is a prominent mechanism that determines the pulmonary retention characteristics of relatively insoluble particles. Studies have also shown that the alveolar deposition of excessive burdens of particles with even low intrinsic cytotoxicity can result in impairments of the AM-mediated panicle clearance mechanism and the development of pathologic disorders including pulmonary fibrosis and lung cancer, at least in the lungs of rats. We briefly review evidence consistent with the idea that the high volumetric loads of particles contained in AM during particle overload conditions underlies their inabilities to translocate from the lung. Using a condition of particle overload brought about by subchronic exposure of rats to ultra-fine titanium dioxide as an experimental model, we have obtained ultrastructural and other evidence that indicates an association between particle overload and: The occurrence of aggregates of particle-containing AM in alveoli, Type II cell hyperplasia in alveoli that contain the AM aggregates, a loss in patent pores of Kohn in alveoli that contain the AM aggregates and show Type II cell hyperplasia, the interstitialization of particles at the sites where these phenomena collectively occur, and the development of fibrosis in alveolar regions where particle interstitialization occurs. The loss of pores of Kohn in the alveoli that contain aggregates of particle-laden AM suggests that these interalveolar pores normally serve as passageways through which AM may migrate to neighboring alveoli as they perform their function of phagocytizing particles that have deposited on the alveolar surface. The pores of Kohn also serve as short-cut pathways for AM to reach the mucociliary apparatus from more distal alveoli.

  10. Energy conditions in f(R)-gravity

    E-Print Network [OSTI]

    J. Santos; J. S. Alcaniz; M. J. Reboucas; F. C. Carvalho

    2007-09-06

    In order to shed some light on the current discussion about f(R)-gravity theories we derive and discuss the bounds imposed by the energy conditions on a general f(R) functional form. The null and strong energy conditions in this framework are derived from the Raychaudhuri's equation along with the requirement that gravity is attractive, whereas the weak and dominant energy conditions are stated from a comparison with the energy conditions that can be obtained in a direct approach via an effective energy-momentum tensor for f(R)-gravity. As a concrete application of the energy conditions to locally homogeneous and isotropic f(R)-cosmology, the recent estimated values of the deceleration and jerk parameters are used to examine the bounds from the weak energy condition on the parameters of two families of f(R)-gravity theories.

  11. Building America Webinar: High Performance Space Conditioning...

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

    Compact Buried Ducts Building America Webinar: High Performance Space Conditioning Systems, Part II - Compact Buried Ducts Dave Mallay, Partnership for Home Innovation (PHI),...

  12. Building America Webinar: High Performance Space Conditioning...

    Energy Savers [EERE]

    Webinar: High Performance Space Conditioning Systems, Part II - Air Distribution Retrofit Strategies for Affordable Housing Building America Webinar: High Performance Space...

  13. Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning

    Office of Energy Efficiency and Renewable Energy (EERE)

    Researchers at the National Renewable Energy Laboratory (NREL) invented a breakthrough technology that improves air conditioning in a novel way with heat.

  14. Unvented, Conditioned Crawlspaces - Building America Top Innovation...

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

    the interior of a framed crawlspace with insulation installed. This Top Innovation profile highlights Building America research into the benefits of closed, conditioned crawlspaces...

  15. History of Air Conditioning | Department of Energy

    Energy Savers [EERE]

    Efficiency Standards Drive Improvements As air conditioning use soared in the 1970s, the energy crisis hit. In response, lawmakers passed laws to reduce energy consumption across...

  16. ECWEBTermsandConditions.doc | Department of Energy

    Office of Environmental Management (EM)

    ECWEBTermsandConditions.doc&0; More Documents & Publications PTXCMP.pdf DOE Princeton Plasma Physics Laboratory Purchase Power Agreement Request for Proposal ESPC ENABLE Draft...

  17. Cruelty, Prison Conditions, and the Eighth Amendment

    E-Print Network [OSTI]

    Dolovich, Sharon

    2009-01-01

    B. Prison Conditions as StateCruelty . . . . . . . . . . . . D. Prisons as Sites ofdo not pay atten- tion, prisoners may be exposed to the

  18. Vermont Conditionally Exempt Generator Handbook: A Hazardous...

    Open Energy Info (EERE)

    Conditionally Exempt Generator Handbook: A Hazardous Waste Management Guide for Smaller Vermont Business Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  19. Temporary Pedestrian & Vehicular Traffic Flow Typical Conditions

    E-Print Network [OSTI]

    Kamat, Vineet R.

    Temporary Pedestrian & Vehicular Traffic Flow Typical Conditions Winter 2014 Ann Arbor - Ross 900150 Feet Pedestrian Route Existing Building Construction Area Traffic Detour Temporary Transit Stop

  20. Logarithmic Opinion Pools for Conditional Random Fields

    E-Print Network [OSTI]

    Smith, Andrew

    2007-06-26

    Since their recent introduction, conditional random fields (CRFs) have been successfully applied to a multitude of structured labelling tasks in many different domains. Examples include natural language processing ...

  1. Effects of Surface Modification Conditions on Hydrophobicity...

    Office of Scientific and Technical Information (OSTI)

    Effects of Surface Modification Conditions on Hydrophobicity of Silica-based Coating Additives Citation Details In-Document Search Title: Effects of Surface Modification...

  2. Classical and quantum flux energy conditions

    E-Print Network [OSTI]

    Martin-Moruno, Prado

    2013-01-01

    The classical energy conditions are known to not be fundamental physics -- they are typically violated by semiclassical quantum effects. Consequently, some effort has gone into finding possible semiclassical replacements for the classical energy conditions -- the most well developed being the Ford-Roman quantum inequalities. In the current article we shall instead develop classical and quantum versions of a "flux energy condition" (FEC and QFEC) based on the notion of constraining the possible fluxes measured by timelike observers. The classical FEC will be seen to be satisfied by some quantum states, while its quantum analogue (the QFEC) is satisfied under a rather wide range of conditions.

  3. Home Fire Safety Inspection Checklist A fire can occur in any part of your home. Use this checklist to make a safety check of your house or

    E-Print Network [OSTI]

    Marsh, David

    ? Electrical Hazards: o Are appliances checked periodically for good operating conditions? o Are you careful alarm(s) every month? o Do you replace the battery of your battery operated smoke alarm every year? #12

  4. A Convective-like Energy-Stable Open Boundary Condition for Simulations of Incompressible Flows

    E-Print Network [OSTI]

    Dong, Suchuan

    2015-01-01

    We present a new energy-stable open boundary condition, and an associated numerical algorithm, for simulating incompressible flows with outflow/open boundaries. This open boundary condition ensures the energy stability of the system, even when strong vortices or backflows occur at the outflow boundary. Under certain situations it can be reduced to a form that can be analogized to the usual convective boundary condition. One prominent feature of this boundary condition is that it provides a control over the velocity on the outflow/open boundary. This is not available with the other energy-stable open boundary conditions from previous works. Our numerical algorithm treats the proposed open boundary condition based on a rotational velocity-correction type strategy. It gives rise to a Robin-type condition for the discrete pressure and a Robin-type condition for the discrete velocity on the outflow/open boundary, respectively at the pressure and the velocity sub-steps. We present extensive numerical experiments on...

  5. Operational-Condition-Independent Criteria Dedicated to Monitoring Wind Turbine Generators: Preprint

    SciTech Connect (OSTI)

    Yang, W.; Sheng, S.; Court, R.

    2012-08-01

    To date the existing wind turbine condition monitoring technologies and commercially available systems have not been fully accepted for improving wind turbine availability and reducing their operation and maintenance costs. One of the main reasons is that wind turbines are subject to constantly varying loads and operate at variable rotational speeds. As a consequence, the influences of turbine faults and the effects of varying load and speed are coupled together in wind turbine condition monitoring signals. So, there is an urgent need to either introduce some operational condition de-coupling procedures into the current wind turbine condition monitoring techniques or develop a new operational condition independent wind turbine condition monitoring technique to maintain high turbine availability and achieve the expected economic benefits from wind. The purpose of this paper is to develop such a technique. In the paper, three operational condition independent criteria are developed dedicated for monitoring the operation and health condition of wind turbine generators. All proposed criteria have been tested through both simulated and practical experiments. The experiments have shown that these criteria provide a solution for detecting both mechanical and electrical faults occurring in wind turbine generators.

  6. SUPPLEMENTAL GENERAL CONDITIONS SUP -1 Rev. 101/20102014

    E-Print Network [OSTI]

    Kamat, Vineet R.

    SUPPLEMENTAL GENERAL CONDITIONS SUP - 1 Rev. 101/20102014 SUPPLEMENTAL GENERAL CONDITIONS January, 20102014 These Supplemental General Conditions are to modify, supplement, void, supersede and amend be deemed to include the Standard General Conditions and the Supplemental General Conditions. INDEXTABLE

  7. CONMOW: Condition Monitoring for Offshore Wind Farms

    E-Print Network [OSTI]

    1 CONMOW: Condition Monitoring for Offshore Wind Farms Edwin Wiggelinkhuizen, Theo Verbruggen, Henk in practice the European project CONMOW (Condition Monitoring for Offshore Wind Farms) was started in November for Offshore Wind Farms) was started in November 2002. This paper briefly describes the CONMOW project approach

  8. Boundary conditions for the subdiffusion equation

    SciTech Connect (OSTI)

    Shkilev, V. P.

    2013-04-15

    The boundary conditions for the subdiffusion equations are formulated using the continuous-time random walk model, as well as several versions of the random walk model on an irregular lattice. It is shown that the boundary conditions for the same equation in different models have different forms, and this difference considerably affects the solutions of this equation.

  9. Conditional statistical inference and quantification of relevance

    E-Print Network [OSTI]

    Sundberg, Rolf

    a quantification of the concept of relevance for conditional in- ference. Conditioning on an ancillary statistic makes inference more relevant in this sense, provided that the ancillary is a precision index. Not all ancillary statistics satisfy this demand. We discuss the problem of choice between alternative ancillary

  10. Energy conditions outside a dielectric ball

    SciTech Connect (OSTI)

    Graham, Noah; Olum, Ken D.; Schwartz-Perlov, Delia [Department of Physics, Middlebury College, Middlebury, Vermont 05753 (United States); Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155 (United States)

    2004-11-15

    We show analytically that the vacuum electromagnetic stress-energy tensor outside a ball with constant dielectric constant and permeability always obeys the weak, null, dominant, and strong energy conditions. There are still no known examples in quantum field theory in which the averaged null energy condition in flat spacetime is violated.

  11. Location of the M 2.0 Earthquake on 08/22/2010 that Occurred 25 km North of West Valley, New York.

    E-Print Network [OSTI]

    1 Location of the M 2.0 Earthquake on 08/22/2010 that Occurred 25 km North of West Valley, New York at 16:41:47 (UTC) about 25 km north of West Valley, New York. There were no felt reports by residents and their distribution is plotted in Figure 2. 22 August 2010, Md 2.0 Earthquake 15 miles north of West Valley, NY -78

  12. Overview of DOE-NE Structural Materials Research, Materials Challenges and Operating Conditions

    SciTech Connect (OSTI)

    Maloy, Stuart A.; Busby, Jeremy T.

    2012-06-12

    This presentation summarized materials conditions for application of nanomaterials to reactor components. Material performance is essential to reactor performance, economics, and safety. A modern reactor design utilizes many different materials and material systems to achieve safe and reliable performance. Material performance in these harsh environments is very complex and many different forms of degradation may occur (often together in synergistic fashions). New materials science techniques may also help understand degradation modes and develop new manufacturing and fabrication techniques.

  13. EFFECTS OF EXTREME AND UNUSUAL CONDITIONS ON LANA ALLOYS: INTERIM REPORT, FY14 (U)

    SciTech Connect (OSTI)

    Shanahan, Kirk L.

    2014-04-25

    The TTP proposed research aimed at determining: a) the rate at which these changes occurred and the effect of initial conditions, especially in the early phases of Hydrogen Heat Treatment (HHT), b) whether or not different LANA alloys would show similar effects, and c) whether common contaminants/poisons impacted LANA alloy hydride chemistry similarly to what had been found for Pd and Pd-alloy hydride chemistry.

  14. Reinforcers in Infancy: Classical Conditioning Using Stroking

    E-Print Network [OSTI]

    Sullivan, Regina M.

    stimuli (UCS); 1) intra-oral milk infusions or 2) stroking with a sable-hair brush. These UCS's produce test; these are UCR's that occur to milk infusions but infrequently to the stroking UCS. These results-oral infusions of milk with specific ingestive responses such as mouthing and probing as well as with more

  15. Probabilistic Planning for Predictive Condition Monitoring and Adaptation Probabilistic Planning for Predictive Condition Monitoring and

    E-Print Network [OSTI]

    Paderborn, Universitt

    Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management: self-optimizing systems, dependability, prob- abilistic planning, energy management 1. SelfProbabilistic Planning for Predictive Condition Monitoring and Adaptation Paper: Probabilistic

  16. On Jacobi's condition for the simplest problem of calculus of variations with mixed boundary conditions

    E-Print Network [OSTI]

    Milan Batista

    2015-08-18

    The purpose of this paper is the extension of Jacobi's criteria for positive definiteness of second variation of the simplest problems of calculus of variations subject to mixed boundary conditions. Both non constrained and isoperimetric problems are discussed. The main result is that Jacobi's condition remains valid also for the mixed boundary conditions.

  17. On Jacobi's condition for the simplest problem of calculus of variations with mixed boundary conditions

    E-Print Network [OSTI]

    Milan Batista

    2015-06-24

    The purpose of this paper is the extension of Jacobi's criteria for positive definiteness of second variation of the simplest problems of calculus of variations subject to mixed boundary conditions. Both non constrained and isoperimetric problems are discussed. The main result is that Jacobi's condition remains valid also for the mixed boundary conditions.

  18. Junction conditions in extended Teleparallel gravities

    SciTech Connect (OSTI)

    De la Cruz-Dombriz, lvaro; Dunsby, Peter K.S.; Sez-Gmez, Diego E-mail: peter.dunsby@uct.ac.za

    2014-12-01

    In the context of extended Teleparallel gravity theories, we address the issue of junction conditions required to guarantee the correct matching of different regions of spacetime. In the absence of shells/branes, these conditions turn out to be more restrictive than their counterparts in General Relativity as in other extended theories of gravity. In fact, the general junction conditions on the matching hypersurfaces depend on the underlying theory and a new condition on the induced tetrads in order to avoid delta-like distributions in the field equations. This result imposes strict consequences on the viability of standard solutions such as the Einstein-Straus-like construction. We find that the continuity of the scalar torsion is required in order to recover the usual General Relativity results.

  19. Building America Webinar: High Performance Space Conditioning...

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

    I: Heating and Cooling with Mini-Splits in the Northeast Building America Webinar: High Performance Space Conditioning Systems, Part I: Heating and Cooling with Mini-Splits in the...

  20. NOVELTY DETECTION UNDER CHANGING ENVIRONMENTAL CONDITIONS

    SciTech Connect (OSTI)

    H. SOHN; K. WORDER; C. R. FARRAR

    2001-04-01

    The primary objective of novelty detection is to examine a system's dynamic response to determine if the system significantly deviates from an initial baseline condition. In reality, the system is often subject to changing environmental and operation conditions that affect its dynamic characteristics. Such variations include changes in loading, boundary conditions, temperature, and moisture. Most damage diagnosis techniques, however, generally neglect the effects of these changing ambient conditions. Here, a novelty detection technique is developed explicitly taking into account these natural variations of the system in order to minimize false positive indications of true system changes. Auto-associative neural networks are employed to discriminate system changes of interest such as structural deterioration and damage from the natural variations of the system.

  1. DAMAGE DIAGNOSIS CONSIDERING CHANGING EVNIRONMENTAL CONDITIONS

    SciTech Connect (OSTI)

    H. SOHN; K. WORDER; C. FARRAR

    2001-05-01

    The primary objective of novelty detection is to examine a system's dynamic response to determine if the system significantly deviates from an initial baseline condition. In reality, the system is often subject to changing environmental and operation conditions that affect its dynamic characteristics. Such variations include changes in loading, boundary conditions, temperature, and moisture. Most damage diagnosis techniques, however, generally neglect the effects of these changing ambient conditions. Here, a novelty detection technique is developed explicitly taking into account these natural variations of the system in order to minimize false positive indications of true system changes. Auto-associative neural networks are employed to discriminate system changes of interest such as structural deterioration and damage from the natural variations of the system.

  2. Space Conditioning Standing Technical Commitee Presentation

    Broader source: Energy.gov [DOE]

    This presentation outlines the goals of the Space Conditioning Standing Technical ommittee, as presented at the Building America Spring 2012 Stakeholder meeting on February 29, 2012, in Austin, Texas.

  3. Conditions when hybridization might predispose populations

    E-Print Network [OSTI]

    COMMENTARY Conditions when hybridization might predispose populations for adaptive radiation O (Sch- warzer et al., 2012), perhaps just as a consequence of many young species in geographical et al., 2011; Genner & Turner, 2012). Whether these species radiations happen despite hybridization

  4. Terms and Conditions of Study February 2014

    E-Print Network [OSTI]

    Brierley, Andrew

    in an unbecoming or disorderly manner or shows insufficient diligence in their studies and, though admonished, does and conditions governing matriculated students of the University of St Andrews for the duration of my studies

  5. Fuel-cell engine stream conditioning system

    DOE Patents [OSTI]

    DuBose, Ronald Arthur (Marietta, GA)

    2002-01-01

    A stream conditioning system for a fuel cell gas management system or fuel cell engine. The stream conditioning system manages species potential in at least one fuel cell reactant stream. A species transfer device is located in the path of at least one reactant stream of a fuel cell's inlet or outlet, which transfer device conditions that stream to improve the efficiency of the fuel cell. The species transfer device incorporates an exchange media and a sorbent. The fuel cell gas management system can include a cathode loop with the stream conditioning system transferring latent and sensible heat from an exhaust stream to the cathode inlet stream of the fuel cell; an anode humidity retention system for maintaining the total enthalpy of the anode stream exiting the fuel cell related to the total enthalpy of the anode inlet stream; and a cooling water management system having segregated deionized water and cooling water loops interconnected by means of a brazed plate heat exchanger.

  6. Transformations of Conditional Rewrite Systems (Extended Abstract)

    E-Print Network [OSTI]

    Gramlich, Bernhard

    Transformations of Conditional Rewrite Systems Revisited (Extended Abstract) Karl Gmeiner and Bernhard Gramlich TU Wien, Austria, {gmeiner,gramlich}@logic.at We revisit known transformations for describing and classifying such transformations, discuss the major problems arising, pro- vide simplified

  7. Temporary Pedestrian & Vehicular Traffic Flow Typical Conditions

    E-Print Network [OSTI]

    Kamat, Vineet R.

    Temporary Pedestrian & Vehicular Traffic Flow Typical Conditions Winter 2014 Ann Arbor - Medical://www.umaec.umich.edu/closures.html Roadway Closure Existing Traffic Pattern I0 400 800 1,200200 Feet Pedestrian Route Existing Building

  8. Ocean Conditions, Salmon, and Climate Change

    E-Print Network [OSTI]

    Ocean Conditions, Salmon, and Climate Change John Ferguson1 NOAA Fisheries Northwest Fisheries're finding - adult forecasts and climate change) #12;1. Past (for context) The coastal pelagic ecosystem

  9. Fundamental mechanisms in flue-gas conditioning

    SciTech Connect (OSTI)

    Dahlin, R.S.; Vann Bush, P.; Snyder, T.R.

    1992-01-09

    The overall goal of this research project is to formulate a mathematical model of flue gas conditioning. This model will be based on an understanding of why ash properties, such as cohesivity and resistivity, are changed by conditioning. Such a model could serve as a component of the performance models of particulate control devices where flue gas conditioning is used. There are two specific objectives of this research project, which divide the planned research into two main parts. One part of the project is designed to determine how ash particles are modified by interactions with sorbent injection processes and to describe the mechanisms by which these interactions affect fine particle collection. The objective of the other part of the project is to identify the mechanisms by which conditioning agents, including chemically active compounds, modify the key properties of fine fly ash particles.

  10. Alternative Air Conditioning Technologies: Underfloor Air Distribution (UFAD)

    E-Print Network [OSTI]

    Webster, Tom

    2004-01-01

    Refrigerating, and Air-Conditioning Engineers, Inc, 1992.Refrigerating, and Air-Conditioning Engineers, Inc. , 1992.Refrigerating, and Air-Conditioning Engineers, Inc. , 1990.

  11. Control of Computer Room Air Conditioning using IT Equipment Sensors

    E-Print Network [OSTI]

    Bell, Geoffrey C.

    2010-01-01

    Control of Computer Room Air Conditioning using IT EquipmentControl of Computer Room Air Conditioning using IT equipmentcontrol computer room air conditioning. The data provided

  12. Investigation of residential central air conditioning load shapes in NEMS

    E-Print Network [OSTI]

    Hamachi LaCommare, Kristina; Marnay, Chris; Gumerman, Etan; Chan, Peter; Rosenquist, Greg; Osborn, Julie

    2002-01-01

    of Residential Central Air Conditioning Load Shapes in NEMSof Residential Central Air Conditioning Load Shapes in NEMSof Residential Central Air Conditioning Load Shapes in NEMS

  13. Microsoft Word - SpecialTermsandConditions0506.doc | Department...

    Energy Savers [EERE]

    Microsoft Word - SpecialTermsandConditions0506.doc Microsoft Word - SpecialTermsandConditions0506.doc Microsoft Word - SpecialTermsandConditions0506.doc More Documents &...

  14. Fundamental mechanisms in flue gas conditioning

    SciTech Connect (OSTI)

    Snyder, T.R.; Bush, P.V.

    1993-01-20

    We performed a wide variety of laboratory analyses during the past quarter. As with most of the work we performed during the previous quarter, our recent efforts were primarily directed toward the determination of the effects of adsorbed water on the cohesivity and tensile strength of powders. We also continued our analyses of dust cake ashes that have had the soluble compounds leached from their particle surfaces by repeated washings with water. Our analyses of leached and unleached dust cake ashes continued to provide some interesting insights into effects that compounds adsorbed on surfaces of ash particles can have on bulk ash behavior. As suggested by our literature review, our data indicate that water adsorption depends on particle morphology and on surface chemistry. Our measurements of tensile strength show, that for many of the samples we have analyzed a relative minimum in tensile strength exists for samples conditioned and tested at about 30% relative humidity. In our examinations of the effects of water conditioning on sample cohesivity, we determined that in the absence of absorption of water into the interior of the particles, cohesivity usually increases sharply when environments having relative humidities above 75% are used to condition and test the samples. Plans are under way to condition selected samples with (NH[sub 4])[sub 2]SO[sub 4], NH[sub 4]HSO[sub 4], CaCl[sub 2], organosiloxane, and SO[sub 3]. Pending approval, we will begin these conditioning experiments, and subsequent analyses of the conditioned samples.

  15. t(8; 14) chromosome translocation of the Burkitt lymphoma cell line Daudi occurred during immunoglobulin gene rearrangement and involved the heavy chain diversity region

    SciTech Connect (OSTI)

    Haluska, F.G.; Tsujimoto, Y.; Croce, C.M.

    1987-10-01

    Recent molecular analyses of Burkitt lymphomas carrying the t(8;14) chromosome translocation have indicated that a dichotomy exists regarding the molecular mechanisms by which the translocations occur. Most sporadic Burkitt tumors carry translocations that apparently arise due to mistakes in the immunoglobulin isotype-switching process. In contrast, there is evidence that the translocations of most endemic Burkitt lymphomas occur as a consequence of aberrant V-D-J recombination of variable, diversity, and joining gene segments, catalyzed by the recombinase enzymes. This phenomenon was first noted in follicular lymphomas and chronic lymphocytic leukemias of the B-cell lineage and has been described in T-cell malignancies as well. In each of these cases, analysis of the nucleotide sequence at chromosome breakpoints demonstrated the involvement of immunoglobulin heavy chain J/sub H/ or T-cell-receptor ..cap alpha..-chain J..cap alpha.. gene segments in the translocation. The authors now have cloned and sequenced both the 8q- and 14q+ translocation breakpoints deriving from the t(8;14) translocation of the endemic Burkitt lymphoma line Daudi. The data show that the translocation resulted from a reciprocal exchange between the D/sub H/ region on chromosome 14 and sequences far 5' of the MYC protooncogene on chromosome 8. Features of the nucleotide sequences surrounding the breakpoint further implicate the V-D-J joining machinery in the genesis of chromosome translocation in endemic Burkitt lymphomas and, more generally, in other lymphoid malignancies as well.

  16. Development of pollutant release estimates due to abrasive blasting for lead paint removal from New York City Department of Transportation steel bridges

    SciTech Connect (OSTI)

    Lee, M.; Domanski, J.

    1999-07-01

    The use of abrasive blasting techniques in the removal of lead paint from steel bridges is a subject of public health and environmental concerns. This process creates airborne dust that must be appropriately contained to prevent inhalation or ingestion exposure during the removal activity, since some of that dust contains lead and other metals. Lead particles, if not appropriately contained, can also settle in local soils or on and within buildings, and can ultimately be inhaled or ingested. Potential worst case release scenarios for the release of dust and pollutants from paint removal operations were developed as part of the analysis framework for the Environmental Impact Statement for Lead Paint Removal Operations on New York City Department of Transportation Bridges. A multi-step analytical framework was developed for the Environmental Impact Statement (EIS), aimed at characterizing and quantifying a series of worst case scenarios for the release of contaminated material into the environment. The pollutants that the analysis focused on were lead, respirable particulates (PM10), Total Suspended Particulates (TSP) and other metals. Samples of existing paint obtained from various surfaces of representative bridges were analyzed to determine average paint dry film thickness and the concentration of metals in the paint for each of the representative bridges. Samples of expendable abrasives were analyzed to determine the concentration of metals within the abrasives. Six scenarios were developed to encompass the range of potential releases that can occur during blasting operations. Two subcategories of hypothetical release events were developed for each scenario-- reasonable worst case events and maximum worst case events. Air quality dispersion modeling with the Environmental Protection Agency's ISC3ST model was employed with the predicted release rates.

  17. Efficient Simulation and Conditional Functional Limit Theorems for Ruinous Heavy-tailed Random Walks

    E-Print Network [OSTI]

    Blanchet, Jose

    2010-01-01

    The contribution of this paper is to introduce change of measure based techniques for the rare-event analysis of heavy-tailed stochastic processes. Our changes-of-measure are parameterized by a family of distributions admitting a mixture form. We exploit our methodology to achieve two types of results. First, we construct Monte Carlo estimators that are strongly efficient (i.e. have bounded relative mean squared error as the event of interest becomes rare). These estimators are used to estimate both rare-event probabilities of interest and associated conditional expectations. We emphasize that our techniques allow us to control the expected termination time of the Monte Carlo algorithm even if the conditional expected stopping time (under the original distribution) given the event of interest is infinity -- a situation that sometimes occurs in heavy-tailed settings. Second, the mixture family serves as a good approximation (in total variation) of the conditional distribution of the whole process given the rar...

  18. How loads affect coiled tubing life

    SciTech Connect (OSTI)

    Walker, E.J. Inc., AK )

    1992-01-01

    Fatigue testing was performed on 1-3/4-in OD, 0.125 in. wall thickness (WT) coiled tubing using a standard coiled tubing unit (CTU) as shown in this paper. Testing was conducted under Prudhoe Bay, Alaska oil well, conditions to determine the effects of axial load, internal pressure and bending stress on the longevity, or usable running footage, that can be expected with larger diameter tubing. The CTU was rigged up in a standard configuration with injector head 50 ft off the ground, the worst case for bending on most currently available North Slope units. Internal pressure was supplied by a small triplex pump and the end of tubing was closed off with a fishing neck and bull plug. Weight, for the first four tests, was suspended from the coiled tubing by a special clamp. The tubing was cycled up and over the guide arch until a loss of internal coiled tubing pressure (CTP) occurred, or until the tubing became stuck in the stripper brass.

  19. Fuel Conditioning Facility Electrorefiner Process Model

    SciTech Connect (OSTI)

    DeeEarl Vaden

    2005-10-01

    The Fuel Conditioning Facility at the Idaho National Laboratory processes spent nuclear fuel from the Experimental Breeder Reactor II using electro-metallurgical treatment. To process fuel without waiting for periodic sample analyses to assess process conditions, an electrorefiner process model predicts the composition of the electrorefiner inventory and effluent streams. For the chemical equilibrium portion of the model, the two common methods for solving chemical equilibrium problems, stoichiometric and non stoichiometric, were investigated. In conclusion, the stoichiometric method produced equilibrium compositions close to the measured results whereas the non stoichiometric method did not.

  20. Breakthrough Video: Desiccant Enhanced Evaporative Air Conditioning

    SciTech Connect (OSTI)

    2012-01-01

    Researchers at the National Renewable Energy Laboratory (NREL) invented a breakthrough technology that improves air conditioning in a novel waywith heat. NREL combined desiccant materials, which remove moisture from the air using heat, and advanced evaporative technologies to develop a cooling unit that uses 90% less electricity and up to 80% less total energy than traditional air conditioning (AC). This solution, called the desiccant enhanced evaporative air conditioner (DEVAP), also controls humidity more effectively to improve the comfort of people in buildings.

  1. Landau's necessary density conditions for LCA groups

    E-Print Network [OSTI]

    Grchenig, K; Seip, K

    2008-01-01

    H. Landau's necessary density conditions for sampling and interpolation may be viewed as a general principle resting on a basic fact of Fourier analysis: The complex exponentials $e^{i kx}$ ($k$ in $\\mathbb{Z}$) constitute an orthogonal basis for $L^2([-\\pi,\\pi])$. The present paper extends Landau's conditions to the setting of locally compact abelian (LCA) groups, relying in an analogous way on the basics of Fourier analysis. The technicalities--in either case of an operator theoretic nature--are however quite different. We will base our proofs on the comparison principle of J. Ramanathan and T. Steger.

  2. Microfluidics: The no-slip boundary condition

    E-Print Network [OSTI]

    Eric Lauga; Michael P. Brenner; Howard A. Stone

    2005-09-28

    The no-slip boundary condition at a solid-liquid interface is at the center of our understanding of fluid mechanics. However, this condition is an assumption that cannot be derived from first principles and could, in theory, be violated. We present a review of recent experimental, numerical and theoretical investigations on the subject. The physical picture that emerges is that of a complex behavior at a liquid/solid interface, involving an interplay of many physico-chemical parameters, including wetting, shear rate, pressure, surface charge, surface roughness, impurities and dissolved gas.

  3. Casimir Energies and General Relativity Energy Conditions

    E-Print Network [OSTI]

    N. Graham

    2006-01-06

    Quantum systems often contain negative energy densities. In general relativity, negative energies lead to time advancement, rather than the usual time delay. As a result, some Casimir systems appear to violate energy conditions that would protect against exotic phenomena such as closed timelike curves and superluminal travel. However, when one examines a variety of Casimir systems using self-consistent approximations in quantum field theory, one finds that a particular energy condition is still obeyed, which rules out exotic phenomena. I will discuss the methods and results of these calculations in detail and speculate on their potential implications in general relativity.

  4. Conditions for stimulated emission in anomalous gravity-superconductors interactions

    E-Print Network [OSTI]

    G. Modanese; T. Junker

    2009-08-19

    Several authors have studied the generation of gravitational fields by condensed-matter systems in non-extreme density conditions. General Relativity and lowest-order perturbative Quantum Gravity predict in this case an extremely small emission rate, so these phenomena can become relevant only if some strong quantum effect occurs. Quantum aspects of gravity are still poorly understood. It is believed that they could play a role in systems which exhibit macroscopic quantum coherence, like superconductors and superfluids, leading to an "anomalous" coupling between matter and field. We mention here recent work in this field by Woods, Chiao, Becker, Agop et al., Ummarino, Kiefer and Weber. New results are presented concerning anomalous stimulated gravitational emission in a layered superconductor like YBCO. We model the superconductor as an array of intrinsic Josephson junctions. The superconducting parameters are defined by our preliminary measurements with melt-textured samples. We write explicitly and solve numerically the Josephson equations which give the normal and super components of the total current in the superconductor, and derive from this the total available power P=IV. Then, assuming that the coefficients A and B for spontaneous and stimulated gravitational emission are known, we apply to this case the Frantz-Nodvik equation for a laser amplifier. The equation is suitably modified in order to allow for a "continuous pumping" given by an oscillating transport current. The conclusions are relevant for the evaluation of gravitational emission from superconductors. We find that even if the A and B coefficients are anomalously large (possibly because of the Quantum Gravity effects mentioned above), the conditions for stimulated emission are quite strict and the emission rate strongly limited by the IV value.

  5. A Performance Comparison of Condition Based Monitoring Damage Features Used in Rotating Machines under Variable Conditions /

    E-Print Network [OSTI]

    Robinson, Luke Thomas

    2013-01-01

    Condition monitoring of wind turbines: Techniques andand fault detection of wind turbines and related algorithms:and fault diagnostics of wind turbines, in Prognostics and

  6. Gravity Transform for Input Conditioning in

    E-Print Network [OSTI]

    Paiva, Antnio R. C.

    Gravity Transform for Input Conditioning in Brain Machine Interfaces Antnio R. C. Paiva, Jos C. Motivation 2. Methods i. Gravity Transform ii. Modeling and output sensitivity analysis 3. Data Analysis #12;3 Outline 1. Motivation 2. Methods i. Gravity Transform ii. Modeling and output sensitivity analysis 3. Data

  7. The Papapetrou equations and supplementary conditions

    E-Print Network [OSTI]

    O. B. Karpov

    2004-06-02

    On the bases of the Papapetrou equations with various supplementary conditions and other approaches a comparative analysis of the equations of motion of rotating bodies in general relativity is made. The motion of a body with vertical spin in a circular orbit is considered. An expression for the spin-orbit force in a post-Newtonian approximation is investigated.

  8. RADIONUCLIDE TRANSPORT MODELS UNDER AMBIENT CONDITIONS

    SciTech Connect (OSTI)

    S. Magnuson

    2004-11-01

    The purpose of this model report is to document the unsaturated zone (UZ) radionuclide transport model, which evaluates, by means of three-dimensional numerical models, the transport of radioactive solutes and colloids in the UZ, under ambient conditions, from the repository horizon to the water table at Yucca Mountain, Nevada.

  9. Differential-Equation Based Absorbing Boundary Conditions

    E-Print Network [OSTI]

    Schneider, John B.

    Chapter 6 Differential-Equation Based Absorbing Boundary Conditions 6.1 Introduction A simple in the analysis of a wide range of FDTD-related topics. 6.2 The Advection Equation The wave equation that governs.2) The second form represents the equation in terms of an operator operating on Ez where the operator

  10. Power conditioning system for energy sources

    DOE Patents [OSTI]

    Mazumder, Sudip K. (Chicago, IL); Burra, Rajni K. (Chicago, IL); Acharya, Kaustuva (Chicago, IL)

    2008-05-13

    Apparatus for conditioning power generated by an energy source includes an inverter for converting a DC input voltage from the energy source to a square wave AC output voltage, and a converter for converting the AC output voltage from the inverter to a sine wave AC output voltage.

  11. Land Condition -Trend Analysis Data Dictionary

    E-Print Network [OSTI]

    and wildlife resources to characterize an installation's natural resources in a cost- and time-effective manner (USACERL) developed the Land Condition Trend Analysis (LCTA) program to meet the need for natural resources of natural resources data collection, analysis, and reporting designed to meet multiple goals and objectives

  12. A study of pesticide residue levels and insecticide resistance in selected aquatic organisms occurring around the Bryan-College Station agricultural production areas

    E-Print Network [OSTI]

    Dziuk, Larry James

    1971-01-01

    for a number of years for control of insect pests, the non-target organisms there have been conditioned, due to genetic adaptation, to live in the contaminated environment. The organisms that cannot tolerate the level of pesticide present... in the aquatic environment will be elim- inated, but there may be a few hardy 1ndiv1duals that remain. These 1nd1viduals may, in turn, produce offspring with the capacity to live with the presence of increased amounts of pest1c1de. If the amount of pesticide...

  13. Modeling and Control of Aggregated Air Conditioning Loads Under Realistic Conditions

    E-Print Network [OSTI]

    Zhang, Wei

    strategy is designed to track a desired demand curve and to ensure a stable and smooth response. IModeling and Control of Aggregated Air Conditioning Loads Under Realistic Conditions Chin-Yao Chang, Wei Zhang, Jianming Lian, and Karanjit Kalsi Abstract-- Demand-side control is playing an increasingly

  14. Lyapunov functions Variants on the Lyapunov conditionVariants on the Lyapunov condition

    E-Print Network [OSTI]

    Pratt, Vaughan

    Lyapunov functions Variants on the Lyapunov conditionVariants on the Lyapunov condition Guarantee they all converge to = = 0. Why? Because the energy is always decreasing! Lyapunov function: a function a proof of Theorem 1 Martingales Stochastic analogue of Lyapunov function Non-negative function V

  15. Generalized Slow Roll Conditions and the Possibility of Intermediate Scale Inflation in Scalar-Tensor Theory

    E-Print Network [OSTI]

    J. R. Morris

    2001-06-06

    Generalized slow roll conditions and parameters are obtained for a general form of scalar-tensor theory (with no external sources), having arbitrary functions describing a nonminimal gravitational coupling F(\\phi), a Kahler-like kinetic function k(\\phi), and a scalar potential V(\\phi). These results are then used to analyze a simple toy model example of chaotic inflation with a single scalar field \\phi and a standard Higgs potential and a simple gravitational coupling function. In this type of model inflation can occur with inflaton field values at an intermediate scale of roughly 10^{11} GeV when the particle physics symmetry breaking scale is approximately 1 TeV, provided that the theory is realized within the Jordan frame. If the theory is realized in the Einstein frame, however, the intermediate scale inflation does not occur.

  16. Effective Hydrodynamic Boundary Conditions for Corrugated Surfaces

    E-Print Network [OSTI]

    Mongruel, Anne; Asmolov, Evgeny S; Vinogradova, Olga I

    2012-01-01

    We report measurements of the hydrodynamic drag force acting on a smooth sphere falling down under gravity to a plane decorated with microscopic periodic grooves. Both surfaces are lyophilic, so that a liquid (silicone oil) invades the surface texture being in the Wenzel state. A significant decrease in the hydrodynamic resistance force as compared with that predicted for two smooth surfaces is observed. To quantify the effect of roughness we use the effective no-slip boundary condition, which is applied at the imaginary smooth homogeneous isotropic surface located at an intermediate position between top and bottom of grooves. Such an effective condition fully characterizes the force reduction measured with the real surface, and the location of this effective plane is related to geometric parameters of the texture by a simple analytical formula.

  17. A Resilient Condition Assessment Monitoring System

    SciTech Connect (OSTI)

    Humberto Garcia; Wen-Chiao Lin; Semyon M. Meerkov

    2012-08-01

    An architecture and supporting methods are presented for the implementation of a resilient condition assessment monitoring system that can adaptively accommodate both cyber and physical anomalies to a monitored system under observation. In particular, the architecture includes three layers: information, assessment, and sensor selection. The information layer estimates probability distributions of process variables based on sensor measurements and assessments of the quality of sensor data. Based on these estimates, the assessment layer then employs probabilistic reasoning methods to assess the plant health. The sensor selection layer selects sensors so that assessments of the plant condition can be made within desired time periods. Resilient features of the developed system are then illustrated by simulations of a simplified power plant model, where a large portion of the sensors are under attack.

  18. Platform Based Design for Automotive Sensor Conditioning

    E-Print Network [OSTI]

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

    2011-01-01

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

  19. Two Baryons with Twisted Boundary Conditions

    SciTech Connect (OSTI)

    Briceno, Raul; Davoudi, Zohreh; Luu, Thomas; Savage, Martin

    2014-04-01

    The quantization condition for two particle systems with arbitrary number of two-body open coupled-channels, spin and masses in a finite cubic volume is presented. The condition presented is in agreement with all previous studies of two-body systems in a finite volume. The result is fully relativistic and holds for all momenta below inelastic thresholds and is exact up to exponential volume corrections that are governed by m{sub {pi}} L, where m{sub {pi}} is the pion mass and L is the spatial extent of my box. Its implication for the studies of coupled-channel baryon-baryon systems is discussed, and the necessary tools for implementing the formalism are review.

  20. SUPPLEMENTAL GENERAL CONDITIONS SUP -1 Rev. 01/2014

    E-Print Network [OSTI]

    Kamat, Vineet R.

    SUPPLEMENTAL GENERAL CONDITIONS SUP - 1 Rev. 01/2014 SUPPLEMENTAL GENERAL CONDITIONS January, 2014 These Supplemental General Conditions are to modify, supplement, void, supersede and amend The University of Michigan to include the Standard General Conditions and the Supplemental General Conditions. TABLE OF CONTENTS Article

  1. A New Approach to Industrial Air Conditioning

    E-Print Network [OSTI]

    Gravenstreter, T.

    1982-01-01

    50% relati~e humi interest in evaporative cooling offers additional dity were usually viewed as dehumidifier jobs. means to curb the rising cost of conditioning air Those above 50% were thought to be best suited to for human or product comfort.... refrigeration. I In the market place below 50% relative humidity, the chemical dehumidifier ranged through the middle 1970 era, when energy cost became a painful reality. We began to research energy reduction means, as When manufacturing areas require...

  2. Electrical condition monitoring method for polymers

    DOE Patents [OSTI]

    Watkins, Jr., Kenneth S. (Dahlonega, GA); Morris, Shelby J. (Hampton, VA); Masakowski, Daniel D. (Worcester, MA); Wong, Ching Ping (Duluth, GA); Luo, Shijian (Boise, ID)

    2008-08-19

    An electrical condition monitoring method utilizes measurement of electrical resistivity of an age sensor made of a conductive matrix or composite disposed in a polymeric structure such as an electrical cable. The conductive matrix comprises a base polymer and conductive filler. The method includes communicating the resistivity to a measuring instrument and correlating resistivity of the conductive matrix of the polymeric structure with resistivity of an accelerated-aged conductive composite.

  3. Ising Interfaces and Free Boundary Conditions

    E-Print Network [OSTI]

    Clment Hongler; Kalle Kytl

    2011-10-17

    We study the interfaces arising in the two-dimensional Ising model at critical temperature, without magnetic field. We show that in the presence of free boundary conditions between plus and minus spins, the scaling limit of these interfaces can be described by a variant of SLE, called dipolar SLE(3). This generalizes a celebrated result of Chelkak and Smirnov and proves a conjecture of Bauer, Bernard and Houdayer. We mention two possible applications of our result.

  4. Fundamental mechanisms in flue gas conditioning

    SciTech Connect (OSTI)

    Snyder, T.R.; Robinson, M.S.; Bush, P.V.

    1992-04-27

    This project is divided into four tasks. The Management Plan was developed in task 1. Task 2, Evaluation of Mechanisms in FGD Sorbent and Ash Interactions, focuses on the characteristics of binary mixtures of these distinct powders. Task 3, Evaluation of Mechanisms in Conditioning Agents and Ash, is designed to examine the effects of various conditioning agents on fine ash particles to determine the mechanisms by which these agents alter the physical properties of the ash. Tasks 2 and 3 began with an extensive literature search and the assembly of existing theories. This phase of the project is now complete. During the past quarter, initial preparations of laboratory equipment for laboratory testing have been made. A plan for initial laboratory tests has been submitted to the Project Manager for review. Laboratory testing will commence once these laboratory plans have been formally approved. The results of the work performed under task 2 and 3 will be included in a Flue Gas Conditioning Model that will be issued under task 4. The Final Report for the project will also be prepared under task 4.

  5. Weak measurement and Bohmian conditional wave functions

    SciTech Connect (OSTI)

    Norsen, Travis; Struyve, Ward

    2014-11-15

    It was recently pointed out and demonstrated experimentally by Lundeen etal. that the wave function of a particle (more precisely, the wave function possessed by each member of an ensemble of identically-prepared particles) can be directly measured using weak measurement. Here it is shown that if this same technique is applied, with appropriate post-selection, to one particle from a perhaps entangled multi-particle system, the result is precisely the so-called conditional wave function of Bohmian mechanics. Thus, a plausibly operationalist method for defining the wave function of a quantum mechanical sub-system corresponds to the natural definition of a sub-system wave function which Bohmian mechanics uniquely makes possible. Similarly, a weak-measurement-based procedure for directly measuring a sub-systems density matrix should yield, under appropriate circumstances, the Bohmian conditional density matrix as opposed to the standard reduced density matrix. Experimental arrangements to demonstrate this behaviorand also thereby reveal the non-local dependence of sub-system state functions on distant interventionsare suggested and discussed. - Highlights: We study a direct measurement protocol for wave functions and density matrices. Weakly measured states of entangled particles correspond to Bohmian conditional states. Novel method of observing quantum non-locality is proposed.

  6. Condition Monitoring of Cables Task 3 Report: Condition Monitoring Techniques for Electric Cables

    SciTech Connect (OSTI)

    Villaran, M.; Lofaro, R.; na

    2009-11-30

    For more than 20 years the NRC has sponsored research studying electric cable aging degradation, condition monitoring, and environmental qualification testing practices for electric cables used in nuclear power plants. This report summarizes several of the most effective and commonly used condition monitoring techniques available to detect damage and measure the extent of degradation in electric cable insulation. The technical basis for each technique is summarized, along with its application, trendability of test data, ease of performing the technique, advantages and limitations, and the usefulness of the test results to characterize and assess the condition of electric cables.

  7. Innovative Systems for Solar Air Conditioning of Buildings

    E-Print Network [OSTI]

    Kessling, W.; Peltzer, M.

    2004-01-01

    Solar air conditioning is an attractive technology to achieve comfortable room conditions, especially in hot and sunny climates. In particular air conditioning systems based on sorption technologies offer several advantages as they can be designed...

  8. Feasibility of on-line fuel-condition monitoring. [PWR; BWR

    SciTech Connect (OSTI)

    Petti, D.A.; Osetek, D.J.; Croucher, D.W.; Hartwell, J.K.

    1982-01-01

    The relationship between fuel rod damage and fission product release is investigated to assess the feasibility of using on-line gamma spectroscopy of reactor coolant to estimate not only numbers of detected fuel rods, but also the type of core damage which may occur during an accident or off-normal transient. Fission product release signatures for various fuel conditions and accident scenarios are compared, and unique indicators of fuel damage, ranging from cladding pinholes to severely damaged fuel rods, are suggested, The configuration of monitoring hardware and data analysis soft ware are described, and the benefits, development needs, and usefulness of the envisaged power plant system are discussed.

  9. 241-AW Tank Farm Construction Extent of Condition Review for Tank Integrity

    SciTech Connect (OSTI)

    Barnes, Travis J.; Gunter, Jason R.; Reeploeg, Gretchen E.

    2013-11-19

    This report provides the results of an extent of condition construction history review for the 241-AW tank farm. The construction history of the 241-AW tank farm has been reviewed to identify issues similar to those experienced during tank AY-102 construction. Those issues and others impacting integrity are discussed based on information found in available construction records, using tank AY-102 as the comparison benchmark. In the 241-AW tank farm, the fourth double-shell tank farm constructed, similar issues as those with tank 241-AY-102 construction occured. The overall extent of similary and affect on 241-AW tank farm integrity is described herein.

  10. Modelling of Viscoplastic Behaviour of IN718 Under Hot Forging Conditions

    SciTech Connect (OSTI)

    Lin, Y. P.; Lin, J.; Dean, T. A. [Department of Mechanical and Manufacturing Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom); Brown, P. D. [Rolls-Royce plc, PO Box31, Derby DE24 8BJ (United Kingdom)

    2007-04-07

    The mechanical properties of IN718 are directly related to microstructure such as grain size and the hardening mechanisms, which are effective during thermomechanical processing and subsequent heat treatment. In this study a set of unified viscoplastic constitutive equations were determined for IN718 from experimental data of hot forging conditions. Techniques were developed to analyse the reliability and consistency of the experimental data derived from different previous publications. In addition to viscoplastic flow of the material, the determined material model can be used to predict the evolution of dislocations, recrystallisation and grain size occurring during thermomechanical processing.

  11. Method and apparatus for measuring coupled flow, transport, and reaction processes under liquid unsaturated flow conditions

    DOE Patents [OSTI]

    McGrail, Bernard P. (Pasco, WA); Martin, Paul F. (Richland, WA); Lindenmeier, Clark W. (Richland, WA)

    1999-01-01

    The present invention is a method and apparatus for measuring coupled flow, transport and reaction processes under liquid unsaturated flow conditions. The method and apparatus of the present invention permit distinguishing individual precipitation events and their effect on dissolution behavior isolated to the specific event. The present invention is especially useful for dynamically measuring hydraulic parameters when a chemical reaction occurs between a particulate material and either liquid or gas (e.g. air) or both, causing precipitation that changes the pore structure of the test material.

  12. Analysis of Air Conditioning Effectiveness vs. Outdoor Conditions: Traditional Bins or Joint Frequency Bins?

    E-Print Network [OSTI]

    Cohen, B. M.

    1998-01-01

    There are a number of methods used to estimate the effectiveness of air conditioning equipment in handling loads. Full hourly computer simulations are probably the most accurate, but lack flexibility and are more cumbersome ...

  13. Accident Conditions versus Regulatory Test for NRC-Approved UF6 Packages

    SciTech Connect (OSTI)

    MILLS, G. SCOTT; AMMERMAN, DOUGLAS J.; LOPEZ, CARLOS

    2003-01-01

    The Nuclear Regulatory Commission (NRC) approves new package designs for shipping fissile quantities of UF{sub 6}. Currently there are three packages approved by the NRC for domestic shipments of fissile quantities of UF{sub 6}: NCI-21PF-1; UX-30; and ESP30X. For approval by the NRC, packages must be subjected to a sequence of physical tests to simulate transportation accident conditions as described in 10 CFR Part 71. The primary objective of this project was to relate the conditions experienced by these packages in the tests described in 10 CFR Part 71 to conditions potentially encountered in actual accidents and to estimate the probabilities of such accidents. Comparison of the effects of actual accident conditions to 10 CFR Part 71 tests was achieved by means of computer modeling of structural effects on the packages due to impacts with actual surfaces, and thermal effects resulting from test and other fire scenarios. In addition, the likelihood of encountering bodies of water or sufficient rainfall to cause complete or partial immersion during transport over representative truck routes was assessed. Modeled effects, and their associated probabilities, were combined with existing event-tree data, plus accident rates and other characteristics gathered from representative routes, to derive generalized probabilities of encountering accident conditions comparable to the 10 CFR Part 71 conditions. This analysis suggests that the regulatory conditions are unlikely to be exceeded in real accidents, i.e. the likelihood of UF{sub 6} being dispersed as a result of accident impact or fire is small. Moreover, given that an accident has occurred, exposure to water by fire-fighting, heavy rain or submersion in a body of water is even less probable by factors ranging from 0.5 to 8E-6.

  14. Minimized Space Conditioning Distribution Strategy for Low-load...

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

    Minimized Space Conditioning Distribution Strategy for Low-load Homes Minimized Space Conditioning Distribution Strategy for Low-load Homes This presentation was given at the...

  15. Energy Department Offers Conditional Commitment to Cape Wind...

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

    Energy Department Offers Conditional Commitment to Cape Wind Offshore Wind Generation Project Energy Department Offers Conditional Commitment to Cape Wind Offshore Wind Generation...

  16. Normal Conditions of Transport Truck Test of a Surrogate Fuel...

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

    Normal Conditions of Transport Truck Test of a Surrogate Fuel Assembly. Citation Details In-Document Search Title: Normal Conditions of Transport Truck Test of a Surrogate Fuel...

  17. DOE Announces Webinars on High Performance Space Conditioning...

    Energy Savers [EERE]

    High Performance Space Conditioning Systems, Tribal Renewable Energy, and More DOE Announces Webinars on High Performance Space Conditioning Systems, Tribal Renewable Energy, and...

  18. Air-Conditioning, Heating, and Refrigeration Institute (AHRI...

    Office of Environmental Management (EM)

    Air-Conditioning, Heating, and Refrigeration Institute (AHRI) Regulatory Burden RFI Air-Conditioning, Heating, and Refrigeration Institute (AHRI) Regulatory Burden RFI These...

  19. HEATING, AIR-CONDITIONING AND REFRIGERATION DISTRIBUTORS INTERNATIONAL...

    Energy Savers [EERE]

    HEATING, AIR-CONDITIONING AND REFRIGERATION DISTRIBUTORS INTERNATIONAL (HARDI) HEATING, AIR-CONDITIONING AND REFRIGERATION DISTRIBUTORS INTERNATIONAL (HARDI) OE Framework Document...

  20. Energy Department Offers Conditional Commitment to Cape Wind...

    Energy Savers [EERE]

    Offers Conditional Commitment to Cape Wind Offshore Wind Generation Project Energy Department Offers Conditional Commitment to Cape Wind Offshore Wind Generation Project July 1,...

  1. Sustainability and Market Conditions:The Resource Efficiency paradox

    E-Print Network [OSTI]

    Delmas, Magali; Pekovic, Sanja

    2012-01-01

    Strategy, Corporate Sustainability, Energy Efficiency,of Sustainability and Market Conditions energy conservationSustainability and Market Conditions LITERATURE REVIEW Energy

  2. Sustainability and Market Conditions:The Resource Efficiency paradox

    E-Print Network [OSTI]

    Delmas, Magali; Pekovic, Sanja

    2012-01-01

    Strategy, Corporate Sustainability, Energy Efficiency,of Sustainability and Market Conditions energy conservationSustainability and Market Conditions LITERATURE REVIEW Energy and

  3. CFD Combustion Modeling with Conditional Moment Closure using...

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

    Combustion Modeling with Conditional Moment Closure using Tabulated Chemistry CFD Combustion Modeling with Conditional Moment Closure using Tabulated Chemistry A method is...

  4. Identification of High Collision Concentration Locations Under Wet Weather Conditions

    E-Print Network [OSTI]

    Hwang, Taesung; Chung, Koohong; Ragland, David; Chan, Chin-Yao

    2008-01-01

    conducted under wet weather conditions. Observations fromLeahy, M. , and Suggett, J. Weather as a Chronic Hazard forLocations Under Wet Weather Conditions Taesung Hwang,

  5. Effect of Engine Operating Condition and Coolant Temperature...

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

    Operating Condition and Coolant Temperature on EGR Cooler Deposit Microstructure and Chemical Composition Effect of Engine Operating Condition and Coolant Temperature on EGR...

  6. Sequential conditions for fixed and periodic points

    E-Print Network [OSTI]

    Peters, Burnis Charles

    1970-01-01

    ) (Member) ~A (Month) 1970 (Year) ~04SQQ ABSTRACT Sec, uential Conditions fo. Fixed and Periodic Points (August 1970) Burnis C. Peter, Jr. , B. A. , Texas ASM University; M. S. , Texas A&M University Directed by: Jack Bryant and L. F. Guseman, Jr.... Let (X, d) be a metric space and f a selfmap of X. It is shown that a number of known theorems on the existence of fixed and periodic points are related through simple properties of the n sequence (f ) of iterates . ACMOVI. EDGEMENTS I wish...

  7. CONDITIONS FOR SUPERNOVAE-DRIVEN GALACTIC WINDS

    SciTech Connect (OSTI)

    Nath, Biman B. [Raman Research Institute, Sadashiva Nagar, Bangalore 560080 (India)] [Raman Research Institute, Sadashiva Nagar, Bangalore 560080 (India); Shchekinov, Yuri, E-mail: biman@rri.res.in, E-mail: yus@sfedu.ru [Department of Physics, Southern Federal University, Rostov on Don, 344090 (Russian Federation)] [Department of Physics, Southern Federal University, Rostov on Don, 344090 (Russian Federation)

    2013-11-01

    We point out that the commonly assumed condition for galactic outflows, that supernovae (SNe) heating is efficient in the central regions of starburst galaxies, suffers from invalid assumptions. We show that a large filling factor of hot (?10{sup 6} K) gas is difficult to achieve through SNe heating, irrespective of the SN's initial gas temperature and density, its uniformity, or its clumpiness. We instead suggest that correlated supernovae from OB associations in molecular clouds in the central region can drive powerful outflows if the molecular surface density is >10{sup 3} M {sub ?} pc{sup 2}.

  8. Mechanisms Behind the Generalized Synchronization Conditions

    E-Print Network [OSTI]

    A. A. Koronovskii; O. I. Moskalenko; A. E. Hramov

    2006-02-25

    A universal mechanism underlying generalized synchronization conditions in unidirectionally coupled stochastic oscillators is considered. The consideration is carried out in the framework of a modified system with additional dissipation. The approach developed is illustrated with model examples. The conclusion is reached that two types of the behavior of nonlinear dynamic systems known as generalized synchronization and noise-induced synchronization, which are viewed as different phenomena, actually represent a unique type of the synchronous behavior of stochastic oscillators and are caused by the same mechanism.

  9. Measured Crawlspace Conditions Under Manufactured Homes

    E-Print Network [OSTI]

    Beal, D.; Chasar, D.

    2006-01-01

    stream_source_info ESL-HH-06-07-42.pdf.txt stream_content_type text/plain stream_size 16621 Content-Encoding UTF-8 stream_name ESL-HH-06-07-42.pdf.txt Content-Type text/plain; charset=UTF-8 Measured Crawlspace Conditions... crawlspace dewpoint. Successfully sealing HUD code home crawlspaces is the last piece of the puzzle of floor failures plaguing homes in hot, humid climates. Merely curing the duct leakage is not always enough to keep the floors of the house intact...

  10. Electrical condition monitoring method for polymers

    DOE Patents [OSTI]

    Watkins, Jr. Kenneth S. (Dahlonega, GA); Morris, Shelby J. (Hampton, VA); Masakowski, Daniel D. (Worcester, MA); Wong, Ching Ping (Duluth, GA); Luo, Shijian (Boise, ID)

    2010-02-16

    An electrical condition monitoring method utilizes measurement of electrical resistivity of a conductive composite degradation sensor to monitor environmentally induced degradation of a polymeric product such as insulated wire and cable. The degradation sensor comprises a polymeric matrix and conductive filler. The polymeric matrix may be a polymer used in the product, or it may be a polymer with degradation properties similar to that of a polymer used in the product. The method comprises a means for communicating the resistivity to a measuring instrument and a means to correlate resistivity of the degradation sensor with environmentally induced degradation of the product.

  11. Null Energy Condition violations in bimetric gravity

    E-Print Network [OSTI]

    Baccetti, Valentina; Visser, Matt

    2012-01-01

    We consider the effective stress-energy tensors for the foreground and background sectors in ghost-free bimetric gravity. By considering the symmetries of the theory, we show that the foreground and background null energy conditions (NECs) are strongly anti-correlated. In particular, the NECs can only be simultaneously fulfilled when they saturate, corresponding to foreground and background cosmological constants. In all other situations, either the foreground or the background is subject to a NEC-violating contribution to the total stress-energy.

  12. OMEGA Power Conditioning - Laboratory for Laser Energetics

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you notHeatMaRIEdioxideUser WorkEP Power Conditioning -Power

  13. Patent: Conditioning biomass for microbial growth | DOEpatents

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding access toSmall Reactor for Deep SpaceConditioning biomass for

  14. Lubricant analysis for gas turbine condition monitoring

    SciTech Connect (OSTI)

    Lukas, M.; Anderson, D.P.

    1997-10-01

    Analysis of used lubricating oil is a fast-evolving technique for predictive maintenance with any closed-loop lubricating system such as those in gas and steam turbines, diesel and gasoline engines, transmissions, gearboxes, compressors, pumps, bearings, and hydraulic systems. Based on analysis of periodic oil samples, a laboratory diagnostic report is sent to the personnel responsible for the equipment to warn of any possible problem or to make a specific maintenance recommendation. The entire process, from sample taking to the diagnostic report, should take less than 48 hours to be effective. These reports, when combined with statistical analysis and trending, can provide an insight to management personnel on the effectiveness of the program, efficiency of the maintenance department, repair status of equipment, recurring problems, and even information on the performance of different lubricants. Condition monitoring by oil analysis can be broken down into two categories: debris monitoring to measure the trace quantities of wear particles carried by the lubricant away from the wearing surfaces and lubricant condition monitoring to determine whether the lubricant itself is fit for service based on physical and chemical tests.

  15. Numerical investigation of spontaneous flame propagation under RCCI conditions

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

    Bhagatwala, Ankit V; Sankaran, Ramanan; Kokjohn, Sage; Chen, Jacqueline H

    2015-06-30

    This paper presents results from one and two-dimensional direct numerical simulations under Reactivity Controlled Compression Ignition (RCCI) conditions of a primary reference fuel (PRF) mixture consisting of n-heptane and iso-octane. RCCI uses in-cylinder blending of two fuels with different autoignition characteristics to control combustion phasing and the rate of heat release. These simulations employ an improved model of compression heating through mass source/sink terms developed in a previous work by Bhagatwala et al. (2014), which incorporates feedback from the flow to follow a predetermined experimental pressure trace. Two-dimensional simulations explored parametric variations with respect to temperature stratification, pressure profiles andmoren-heptane concentration. Furthermore, statistics derived from analysis of diffusion/reaction balances locally normal to the flame surface were used to elucidate combustion characteristics for the different cases. Both deflagration and spontaneous ignition fronts were observed to co-exist, however it was found that higher n-heptane concentration provided a greater degree of flame propagation, whereas lower n-heptane concentration (higher fraction of iso-octane) resulted in more spontaneous ignition fronts. A significant finding was that simulations initialized with a uniform initial temperature and a stratified n-heptane concentration field, resulted in a large fraction of combustion occurring through flame propagation. The proportion of spontaneous ignition fronts increased at higher pressures due to shorter ignition delay when other factors were held constant. For the same pressure and fuel concentration, the contribution of flame propagation to the overall combustion was found to depend on the level of thermal stratification, with higher initial temperature gradients resulting in more deflagration and lower gradients generating more ignition fronts. Statistics of ignition delay are computed to assess the Zeldovich (1980) theory for the mode of combustion propagation based on ignition delay gradients.less

  16. Evaluation of process systems operating envelopes

    E-Print Network [OSTI]

    Stuber, Matthew David

    2013-01-01

    This thesis addresses the problem of worst-case steady-state design of process systems under uncertainty, also known as robust design. Designing for the worst case is of great importance when considering systems for ...

  17. Matter Under Extreme Conditions: The Early Years

    E-Print Network [OSTI]

    Keeler, R Norris

    2010-01-01

    Extreme conditions in natural flows are examined, starting with a turbulent big bang. A hydro-gravitational-dynamics cosmology model is adopted. Planck-Kerr turbulence instability causes Planck-particle turbulent combustion. Inertial-vortex forces induce a non-turbulent kinetic energy cascade to Planck-Kolmogorov scales where vorticity is produced, overcoming 10^113 Pa Planck-Fortov pressures. The spinning, expanding fireball has a slight deficit of Planck antiparticles. Space and mass-energy powered by gluon viscous stresses expand exponentially at speeds >10^25 c. Turbulent temperature and spin fluctuations fossilize at scales larger than ct, where c is light speed and t is time. Because ??dark-energy? antigravity forces vanish when inflation ceases, and because turbulence produces entropy, the universe is closed and will collapse and rebound. Density and spin fossils of big bang turbulent mixing trigger structure formation in the plasma epoch. Fragmenting protosuperclustervoids and protoclustervoi...

  18. Rotating cylindrical wormholes and energy conditions

    E-Print Network [OSTI]

    Bronnikov, K A

    2015-01-01

    We seek wormholes among rotating cylindrically symmetric configurations in general relativity. Exact wormhole solutions are presented with such sources of gravity as a massless scalar field, a cosmological constant, and a scalar field with an exponential potential. However, none of these solutions are asymptotically flat, which excludes the existence of wormhole entrances as local objects in our Universe. To overcome this difficulty, we try to build configurations with flat asymptotic regions using the cut-and-paste procedure: on both sides of the throat, a wormhole solution is matched to a properly chosen region of flat space-time at some surfaces $\\Sigma_-$ and $\\Sigma_+$. It is shown, however, that if the source of gravity in the throat region is a scalar field with an arbitrary potential, then one or both thin shells appearing on $\\Sigma_-$ and $\\Sigma_+$ inevitably violate the null energy condition. Thus, although rotating wormhole solutions are easily found without exotic matter, such matter is still ne...

  19. Conditions for positioning of nucleosomes on DNA

    E-Print Network [OSTI]

    Michael Sheinman; Ho-Ryun Chung

    2015-04-29

    Positioning of nucleosomes along eukaryotic genomes plays an important role in their organization and regulation. There are many different factors affecting the location of nucleosomes. Some can be viewed as preferential binding of a single nucleosome to different locations along the DNA and some as interactions between neighboring nucleosomes. In this study we analyzed how well nucleosomes are positioned along the DNA as a function of strength of the preferential binding, correlation length of the binding energy landscape, interactions between neighboring nucleosomes and others relevant system properties. We analyze different scenarios: designed energy landscapes and generically disordered ones and derive conditions for good positioning. Using analytic and numerical approaches we find that, even if the binding preferences are very weak, synergistic interplay between the interactions and the binding preferences is essential for a good positioning of nucleosomes, especially on correlated energy landscapes. Analyzing empirical energy landscape, we discuss relevance of our theoretical results to positioning of nucleosomes on DNA \\emph{in vivo.}

  20. Methods of conditioning direct methanol fuel cells

    DOE Patents [OSTI]

    Rice, Cynthia (Newington, CT); Ren, Xiaoming (Menands, NY); Gottesfeld, Shimshon (Niskayuna, NY)

    2005-11-08

    Methods for conditioning the membrane electrode assembly of a direct methanol fuel cell ("DMFC") are disclosed. In a first method, an electrical current of polarity opposite to that used in a functioning direct methanol fuel cell is passed through the anode surface of the membrane electrode assembly. In a second method, methanol is supplied to an anode surface of the membrane electrode assembly, allowed to cross over the polymer electrolyte membrane of the membrane electrode assembly to a cathode surface of the membrane electrode assembly, and an electrical current of polarity opposite to that in a functioning direct methanol fuel cell is drawn through the membrane electrode assembly, wherein methanol is oxidized at the cathode surface of the membrane electrode assembly while the catalyst on the anode surface is reduced. Surface oxides on the direct methanol fuel cell anode catalyst of the membrane electrode assembly are thereby reduced.

  1. Open Boundary Conditions for Dissipative MHD

    SciTech Connect (OSTI)

    Meier, E T

    2011-11-10

    In modeling magnetic confinement, astrophysics, and plasma propulsion, representing the entire physical domain is often difficult or impossible, and artificial, or 'open' boundaries are appropriate. A novel open boundary condition (BC) for dissipative MHD, called Lacuna-based open BC (LOBC), is presented. LOBC, based on the idea of lacuna-based truncation originally presented by V.S. Ryaben'kii and S.V. Tsynkov, provide truncation with low numerical noise and minimal reflections. For hyperbolic systems, characteristic-based BC (CBC) exist for separating the solution into outgoing and incoming parts. In the hyperbolic-parabolic dissipative MHD system, such separation is not possible, and CBC are numerically unstable. LOBC are applied in dissipative MHD test problems including a translating FRC, and coaxial-electrode plasma acceleration. Solution quality is compared to solutions using CBC and zero-normal derivative BC. LOBC are a promising new open BC option for dissipative MHD.

  2. Particle production in matter at extreme conditions

    E-Print Network [OSTI]

    Inga Kuznetsova

    2009-09-04

    We study particle production and its density evolution and equilibration in hot dense medium. One type of hot dense medium, which we study, is hadronic gas produced at quark gluon plasma hadronization in heavy ions collisions in SPS, RHIC and LHC experiments. We study hadron production at non-equilibrium quark gluon plasma hadronization and their evolution in thermal hadronic gas phase. We use non-equilibrium hadronization as the initial condition in the study of hadronic kinetic phase. During this time period some hadronic resonances can be produced in lighter hadrons fusion. Production of resonances is dominant over decay if there is non-equilibrium excess of decay products. Within this model we explain apparently contradictory experimental results reported in RHIC experiments: Sigma(1385) yield is enhanced while Lambda(1520) yield is suppressed compared to the statistical hadronization model expectation obtained without kinetic phase. We also predict Delta(1232) enhancement. The second type of plasma medium we consider is the relativistic electron positron photon plasma drop. This plasma is expected to be produced in decay of supercritical field created in ultrashort laser pulse. We study at what conditions this plasma drop is opaque for photons and therefore may reach thermal and chemical equilibrium. Further we consider muon and pion production in this plasma also as a diagnostic tool. Finally all these theoretical developments can be applied to begin a study of particles evolution in early universe in temperatures domain from QGP hadronization (160 MeV) to nucleosynthesis (0.1 MeV). The first results on pion equilibration are presented here.

  3. Interior cavern conditions and salt fall potential

    SciTech Connect (OSTI)

    Munson, D.E.; Molecke, M.A. [Sandia National Labs., Albuquerque, NM (United States); Myers, R.E. [Strategic Petroleum Reserve, New Orleans, LA (United States)

    1998-03-01

    A relatively large number of salt caverns are used for fluid hydrocarbon storage, including an extensive set of facilities in the Gulf Coast salt domes for the Strategic Petroleum Reserve (SPR) Program. Attention is focused on the SPR caverns because of available histories that detail events involving loss and damage of the hanging string casing. The total number of events is limited, making the database statistically sparse. The occurrence of the events is not evenly distributed, with some facilities, and some caverns, more susceptible than others. While not all of these events could be attributed to impacts from salt falls, many did show the evidence of such impacts. As a result, a study has been completed to analyze the potential for salt falls in the SPR storage caverns. In this process, it was also possible to deduce some of the cavern interior conditions. Storage caverns are very large systems in which many factors could possibly play a part in casing damage. In this study, all of the potentially important factors such as salt dome geology, operational details, and material characteristics were considered, with all being logically evaluated and most being determined as secondary in nature. As a result of the study, it appears that a principal factor in determining a propensity for casing damage from salt falls is the creep and fracture characteristics of salt in individual caverns. In addition the fracture depends strongly upon the concentration of impurity particles in the salt. Although direct observation of cavern conditions is not possible, the average impurity concentration and the accumulation of salt fall material can be determined. When this is done, there is a reasonable correlation between the propensity for a cavern to show casing damage events and accumulation of salt fall material. The accumulation volumes of salt fall material can be extremely large, indicating that only a few of the salt falls are large enough to cause impact damage.

  4. Tank 42 sludge-only process development for the Defense Waste Processing Facility (DWPF)

    SciTech Connect (OSTI)

    Lambert, D.P.

    2000-03-22

    Defense Waste Processing Facility (DWPF) requested the development of a sludge-only process for Tank 42 sludge since at the current processing rate, the Tank 51 sludge has been projected to be depleted as early as August 1998. Testing was completed using a non-radioactive Tank 42 sludge simulant. The testing was completed under a range of operating conditions, including worst case conditions, to develop the processing conditions for radioactive Tank 42 sludge. The existing Tank 51 sludge-only process is adequate with the exception that 10 percent additional acid is recommended during sludge receipt and adjustment tank (SRAT) processing to ensure adequate destruction of nitrite during the SRAT cycle.

  5. Analyzing Displacement Term's Memory Effect in a van der Pol Type Boundary Condition to Prove Chaotic Vibration of the Wave Equation

    E-Print Network [OSTI]

    Hsu, Sze-Bi

    Chaotic Vibration of the Wave Equation Goong Chen Department of Mathematics, Texas A&M University College it is now known that chaotic vibration occurs. However, if the right-end van der Pol boundary condition technical difficulty arises as to how to define and determine chaotic vibration of the system. In this paper

  6. On the Potential for Vacancy Annihilation as a Mechanism for Conditioning in Pu-1.9 at.% Ga

    SciTech Connect (OSTI)

    Jeffries, J R; Blobaum, K M; Schwartz, A J

    2009-03-09

    The {delta} {yields} {alpha}{prime} martensitic transformation in Pu-1.9 at.% Ga occurs when the alloy is cooled below about -100 C. This transformation exhibits anomalous behavior, where the isothermal transformation proceeds atypically with double-C kinetics. Recent work has revealed that an ambient temperature isothermal hold (referred to as conditioning) prior to the transformation has different effects depending on whether transformation proceeds in the upper- or lower-C of the double-C: the amount of transformation is increased with conditioning in the upper-C, while the transformation in the lower-C seems to be engendered by conditioning. The mechanism by which conditioning affects the low-temperature {delta} {yields} {alpha}{prime} transformation is thus of great importance to understanding the transformation itself as well as the general circumstances that can affect a martensitic phase transformation. Using differential scanning calorimetry measurements, vacancy annihilation as a mechanism for the conditioning effect has been examined. While there are some characteristics of the conditioning effect that are reminiscent of vacancy annihilation, the results of these experiments suggest that vacancy annihilation is not a likely candidate description for the conditioning effect.

  7. Optimization Online - Combinatorial Optimization Submissions - 2014

    E-Print Network [OSTI]

    Combinatorial Optimization Submissions - 2014. January 2014. Approximation Algorithms Worst-Case Performance Analysis of Some Approximation Algorithms ...

  8. Solvolytic liquefaction of wood under mild conditions

    SciTech Connect (OSTI)

    Yu, S.M.

    1982-04-01

    Conversion of wood to liquid products requires cleavage of bonds which crosslink the wood structure. This study examines a low-severity wood solubilization process utilizing a solvent medium consisting of a small amount of sulfuric acid and a potentially wood-derivable alcohol. In one half hour of reaction time at 250/sup 0/C under 15 psia starting nitrogen pressure, over 95% of the wood (maf) was rendered acetone-soluble. The product is a soft, black, bitumen-like solid at room temperature but readily softens at 140/sup 0/C. Between 25 and 50% of the original wood oxygen, depending on alcohol used, was removed as water. Approximately 2 to 17% of the alcohols were retained in the product. Gel permeation chromatography showed that the product's median molecular weight is around 300. Based on experimental and literature results, a mechanism for wood solubilization is proposed. This involves protonation of the etheric oxygen atoms, leading to subsequent bond scission to form carbonium ions which are stabilized by solvent alkoxylation. At severe conditions, polymerization and condensation reactions result in acetone-insoluble materials.

  9. Corrosion in gas conditioning plants - An overview

    SciTech Connect (OSTI)

    Pearce, B.; Dupart, M.

    1987-01-01

    Since the early 1800's, fuel gases of various sorts (acetylene, blast furnace gas, flue water gas, carbureted water gas, coal gas, coke oven gas and producer gas) were transmitted at low pressures in pipelines and were conditioned for contaminate removal. The removal of such contaminates as H/sub 2/S was usually accomplished by solid absorbents such as iron oxide, a process that is still in use today. The discovery in the late 20's of a regenerative process employing alkanolamines was instrumental in rapid increase in the use of natural gas in large volumes. Also at this time, the development of wide diameter pipelines that could handle 500-700 psi gas pressure provided the means of handling these large volumes of gas. The protection of the pipeline from corrosion depended upon contaminate removal of water, carbon dioxide and hydrogen sulfide. In the process of contaminant removal, the process equipment suffered severe corrosion damage. Corrosion test methods and inhibitors were applied to those early processes and have advanced from weep holes and coupons to the present way of electronic and physical test methods. The trend is away from the primary amine at either low strength or inhibited at high concentration to less corrosive, ''tailor-made'' solvents that can be designed or formulated to perform a given task at acceptable corrosion rates and at much lower energy levels.

  10. Proof of the Quantum Null Energy Condition

    E-Print Network [OSTI]

    Bousso, Raphael; Koeller, Jason; Leichenauer, Stefan; Wall, Aron C

    2015-01-01

    We prove the Quantum Null Energy Condition (QNEC), a lower bound on the stress tensor in terms of the second variation in a null direction of the entropy of a region. The QNEC arose previously as a consequence of the Quantum Focussing Conjecture, a proposal about quantum gravity. The QNEC itself does not involve gravity, so a proof within quantum field theory is possible. Our proof is somewhat nontrivial, suggesting that there may be alternative formulations of quantum field theory that make the QNEC more manifest. Our proof applies to free and superrenormalizable bosonic field theories, and to any points that lie on stationary null surfaces. An example is Minkowski space, where any point $p$ and null vector $k^a$ define a null plane $N$ (a Rindler horizon). Given any codimension-2 surface $\\Sigma$ that contains $p$ and lies on $N$, one can consider the von Neumann entropy $S_\\text{out}$ of the quantum state restricted to one side of $\\Sigma$. A second variation $S_\\text{out}^{\\prime\\prime}$ can be defined by...

  11. Alternative non-CFC mobile air conditioning

    SciTech Connect (OSTI)

    Mei, V.C.; Chen, F.C.; Kyle, D.M.

    1992-09-01

    Concern about the destruction of the global environment by chlorofluorocarbon (CFC) fluids has become an impetus in the search for alternative, non-CFC refrigerants and cooling methods for mobile air conditioning (MAC). While some alternative refrigerants have been identified, they are not considered a lasting solution because of their high global warming potential, which could result in their eventual phaseout. In view of this dilemma, environmentally acceptable alternative cooling methods have become important. This report, therefore, is aimed mainly at the study of alternative automotive cooling methodologies, although it briefly discusses the current status of alternative refrigerants. The alternative MACs can be divided into work-actuated and heat-actuated systems. Work-actuated systems include conventional MAC, reversed Brayton air cycle, rotary vane compressor air cycle, Stirling cycle, thermoelectric (TE) cooling, etc. Heat-actuated MACs include metal hydride cooling, adsorption cooling, ejector cooling, absorption cycle, etc. While we are better experienced with some work-actuated cycle systems, heat-actuated cycle systems have a high potential for energy savings with possible waste heat applications. In this study, each altemative cooling method is discussed for its advantages and its limits.

  12. Geometric Characterization of Series-Parallel Variable Resistor Networks

    E-Print Network [OSTI]

    Tygar, Doug

    simultaneously by an algorithm of complexity O(nk). Key Words: Worst case analysis, linear circuits, series-parallel networks, projective geometry. 1. Introduction The task of worst case circuit analysis [7] involves a method for performing a worst case analysis of a variable linear resistor network by casting

  13. Geometric Characterization of SeriesParallel Variable Resistor Networks #

    E-Print Network [OSTI]

    Bryant, Randal E.

    simultaneously by an algorithm of complexity O(nk). Key Words: Worst case analysis, linear circuits, seriesparallel networks, projective geometry. 1. Introduction The task of worst case circuit analysis [7] involves. In his book on circuit theory [2], Calahan describes a method for performing a worst case analysis

  14. Focusing of Rayleigh waves generated by high-speed trains under the condition of ground vibration boom

    E-Print Network [OSTI]

    Krylov, Victor V

    2015-01-01

    In the present paper, the effects of focusing of Rayleigh waves generated by high speed trains in the supporting ground under the condition of ground vibration boom are considered theoretically. These effects are similar to the effects of focusing of sound waves radiated by aircraft under the condition of sonic boom. In particular, if a railway track has a bend to provide the possibility of changing direction of train movement, the Rayleigh surface waves generated by high-speed trains under the condition of ground vibration boom may become focused. This results in concentration of their energy along a simple caustic line at one side of the track and in the corresponding increase in ground vibration amplitudes. The effect of focusing of Rayleigh waves may occur also if a train moves along a straight line with acceleration and its current speed is higher than Rayleigh wave velocity in the ground. The obtained results are illustrated by numerical calculations.

  15. Fatigue and Creep Crack Propagation behaviour of Alloy 617 in the Annealed and Aged Conditions

    SciTech Connect (OSTI)

    Julian K. Benz; Richard N. Wright

    2013-10-01

    The crack propagation behaviour of Alloy 617 was studied under various conditions. Elevated temperature fatigue and creep-fatigue crack growth experiments were conducted at 650 and 800 degrees C under constant stress intensity (triangle K) conditions and triangular or trapezoidal waveforms at various frequencies on as-received, aged, and carburized material. Environmental conditions included both laboratory air and characteristic VHTR impure helium. As-received Alloy 617 displayed an increase in the crack growth rate (da/dN) as the frequency was decreased in air which indicated a time-dependent contribution component in fatigue crack propagation. Material aged at 650C did not display any influence on the fatigue crack growth rates nor the increasing trend of crack growth rate with decreasing frequency even though significant microstructural evolution, including y (Ni3Al) after short times, occurred during aging. In contrast, carburized Alloy 617 showed an increase in crack growth rates at all frequencies tested compared to the material in the standard annealed condition. Crack growth studies under quasi-constant K (i.e. creep) conditions were also completed at 650 degrees C and a stress intensity of K = 40 MPa9 (square root)m. The results indicate that crack growth is primarily intergranular and increased creep crack growth rates exist in the impure helium environment when compared to the results in laboratory air. Furthermore, the propagation rates (da/dt) continually increased for the duration of the creep crack growth either due to material aging or evolution of a crack tip creep zone. Finally, fatigue crack propagation tests at 800 degrees C on annealed Alloy 617 indicated that crack propagation rates were higher in air than impure helium at the largest frequencies and lowest stress intensities. The rates in helium, however, eventually surpass the rates in air as the frequency is reduced and the stress intensity is decreased which was not observed at 650 degrees C.

  16. Necessary Optimality Conditions for Some Control Problems of Elliptic Equations with Venttsel Boundary Conditions

    SciTech Connect (OSTI)

    Luo Yousong, E-mail: yluo@rmit.edu.a [RMIT University, School of Mathematical and Geospatial Sciences (Australia)

    2010-06-15

    In this paper we derive a necessary optimality condition for a local optimal solution of some control problems. These optimal control problems are governed by a semi-linear Vettsel boundary value problem of a linear elliptic equation. The control is applied to the state equation via the boundary and a functional of the control together with the solution of the state equation under such a control will be minimized. A constraint on the solution of the state equation is also considered.

  17. Fourier-Mukai transforms and stability conditions on abelian threefolds

    E-Print Network [OSTI]

    Piyaratne, Hathurusinghege Dulip Bandara

    2014-11-27

    Construction of Bridgeland stability conditions on a given Calabi-Yau threefold is an important problem and this thesis realizes the rst known examples of such stability conditions. More precisely, we construct a dense ...

  18. Energy Conservation of Air Conditioning Systems in Large Public Buildings

    E-Print Network [OSTI]

    Liu, P.; Li, D.

    2006-01-01

    with the heating characteristics of the exterior -protected construction, the set value of the temperature of the air-conditioning, the lectotype of the Central air-conditioning system, the regulation and the modification of the transmission and distribution system...

  19. Influence of sky conditions on carbon dioxide uptake by forests

    E-Print Network [OSTI]

    Dengel, Sigrid

    2009-01-01

    Sky conditions play an important role in the Earths climate system, altering the solar radiation reaching the Earths surface and determining the fraction of incoming direct and diffuse radiation. Sky conditions dictate ...

  20. Development of Optimization Tool for Air Conditioning System Operation

    E-Print Network [OSTI]

    Sumiyoshi, D.; Akashi, Y.

    2008-01-01

    This study aims to realize the optimization of the air-conditioning system operation. Although set values of air-conditioning systems are usually fixed, variable setting values are used in this study. It is possible that less energy consumption...

  1. Las Cruces International Airport (LRU) Pavement Condition and Analysis

    E-Print Network [OSTI]

    Cal, Mark P.

    , AICP Airport Development Administrator New Mexico Aviation Division P.O. Box 9830 Albuquerque, NM 87119 ........................................................................................................3. Airport Maintenance 14 .......................................4. Predicted Pavement Conditions Assuming No Maintenance 14 ...............Table 4. Predicted Pavement Conditions (PCI) Assuming

  2. Direct Expansion Air Conditioning System Selection for Hot & Humid Climates

    E-Print Network [OSTI]

    Browning, B. K.

    2002-01-01

    This paper discusses some of the difficulties of selecting direct expansion (DX) air conditioning systems to dehumidify conditioned spaces in hot & humid climates. It is a common opinion among designers that concerns of humidity control are best...

  3. Roswell International Air Center Airport (ROW) Pavement Condition and Analysis

    E-Print Network [OSTI]

    Cal, Mark P.

    Roswell International Air Center Airport (ROW) Pavement Condition and Analysis Submitted to: Jane M ................................................1. Conditions at Roswell International Air Center (ROW) 4 .................................Figure 1. Geographic Location of Roswell International Air Center (ROW) 4 ..............................Table 1

  4. Transition-metal-hydrogen systems at extreme conditions

    E-Print Network [OSTI]

    Scheler, Thomas Herbert

    2013-07-01

    The application of extreme conditions offers a general route for the synthesis of materials under equilibrium conditions. By finely tuning the thermodynamic variables of pressure and temperature one can manipulate matter ...

  5. Stochastic partial differential equations with singular terminal condition

    E-Print Network [OSTI]

    Popier, Alexandre

    Stochastic partial differential equations with singular terminal condition A Matoussi, Lambert Piozin, A Popier To cite this version: A Matoussi, Lambert Piozin, A Popier. Stochastic partial differential equations with singular terminal condition. 2015. HAL Id: hal-01152687 https

  6. Method for characterization of the redox condition of cementitious materials

    DOE Patents [OSTI]

    Almond, Philip M.; Langton, Christine A.; Stefanko, David B.

    2015-12-22

    Disclosed are methods for determining the redox condition of cementitious materials. The methods are leaching methods that utilize an in situ redox indicator that is present in the cementitious materials as formed. The in situ redox indicator leaches from cementitious material and, when the leaching process is carried out under anaerobic conditions can be utilized to determine the redox condition of the material. The in situ redox indicator can exhibit distinct characteristics in the leachate depending upon the redox condition of the indicator.

  7. Correct traction boundary conditions in the indeterminate couple stress model

    E-Print Network [OSTI]

    Patrizio Neff; Ionel-Dumitrel Ghiba; Angela Madeo; Ingo Mnch

    2015-04-02

    In this paper we consider the Grioli-Koiter-Mindlin-Toupin indeterminatecouple stress model. The main aim is to show that the traction boundary conditions were not yet completely deduced. As it turns out, and to our own surprise, restricting the boundary condition framework from the strain gradient models to the couple stress model does not reduce to Mindlin's set of accepted boundary conditions. We present therefore, for the first time the complete, consistent set of traction boundary conditions.

  8. Temporal Conditions and Integrity Constraints in Active Database Systems \\Lambda

    E-Print Network [OSTI]

    Wolfson, Ouri E.

    to specify conditions that involve both, events and database states, and their evolution over time. BasicallyTemporal Conditions and Integrity Constraints in Active Database Systems \\Lambda A. Prasad Sistla, for specifying conditions and events in the rules for active database sys tem. This language permits

  9. The Ruskin Building 4.1 Building Condition

    E-Print Network [OSTI]

    Flynn, E. Victor

    39 The Ruskin Building 04 #12;40 4.1 Building Condition TEACHING ROOMS STUDENT ANCILLARY ADMIN First Floor Plan Second Floor Plan Third Floor Plan 4.1 Building Condition This Section provides an overview of the condition of the existing buildings. Below is a series of plans identifying the present

  10. Policy on adverse weather conditions affecting Higher Education Review visits

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Policy on adverse weather conditions affecting Higher Education Review visits This policy entered into owing to adverse weather conditions will be by mutual agreement of QAA and the provider. Attendance at the review visit by the QAA officer If adverse weather conditions prevent, or appear likely

  11. Necessary and sufficient conditions for big bangs, bounces, crunches, rips, sudden singularities, and extremality events

    E-Print Network [OSTI]

    Celine Cattoen; Matt Visser

    2005-08-30

    The physically relevant singularities occurring in FRW cosmologies had traditionally been thought to be limited to the "big bang", and possibly a "big crunch". However, over the last few years, the zoo of cosmological singularities considered in the literature has become considerably more extensive, with "big rips" and "sudden singularities" added to the mix, as well as renewed interest in non-singular cosmological events such as "bounces" and "turnarounds". In this article we present a complete catalogue of such cosmological milestones, both at the kinematical and dynamical level. First, using generalized power series, purely kinematical definitions of these cosmological events are provided in terms of the behaviour of the scale factor a(t). The notion of a "scale-factor singularity'" is defined, and its relation to curvature singularities (polynomial and differential) is explored. Second, dynamical information is extracted by using the Friedmann equations (without assuming even the existence of any equation of state) to place constraints on whether or not the classical energy conditions are satisfied at the cosmological milestones. We use these considerations to derive necessary and sufficient conditions for the existence of cosmological milestones such as bangs, bounces, crunches, rips, sudden singularities, and extremality events. Since the classification is extremely general, the corresponding results are to a high degree model-independent: In particular, we provide a complete characterization of the class of bangs, crunches, and sudden singularities for which the dominant energy condition is satisfied.

  12. A Study on Zoning Regulations' Impact on Thermal Comfort Conditions in Non-conditioned Apartment Buildings in Dhaka City

    E-Print Network [OSTI]

    Islam, Saiful

    2012-02-14

    of the requirements for the degree of DOCTOR OF PHILOSOPHY December 2011 Major Subject: Architecture A STUDY ON ZONING REGULATIONS? IMPACT ON THERMAL COMFORT CONDITIONS IN NON-CONDITIONED APARTMENT BUILDINGS IN DHAKA CITY A Dissertation... Culp Liliana Beltran Shannon Smith Van Zandt Head of Department, Ward Wells December 2011 Major Subject: Architecture iii ABSTRACT A Study on Zoning Regulations? Impact on Thermal Comfort Conditions in Non- conditioned...

  13. Modeling the Behavior of a Vessel under Runaway Conditions

    E-Print Network [OSTI]

    Kanes, Rym

    2015-08-11

    -heating occurs, thereby leading to a runaway reaction. The overpressurization of the vessel following the runaway may lead to an industrial accident, a thermal explosion, resulting in damages to people, property and the environment. Emergency relief systems (ERS...

  14. Desiccants: Benefits for the Second Century of Air-Conditioning

    E-Print Network [OSTI]

    McGahey, K.; Harriman, L.

    1996-01-01

    to equalize this pressure differential. Lew Harriman Consultant Mason-Grant Company Box 6547 Portsmouth, NH 03802 With desiccants, moisture removal occurs in the vapor phase. Consequently, desiccant dehumidification can continue even when the dew...

  15. System and method for statistically monitoring and analyzing sensed conditions

    DOE Patents [OSTI]

    Pebay, Philippe P. (Livermore, CA); Brandt, James M. (Dublin, CA), Gentile; Ann C. (Dublin, CA), Marzouk; Youssef M. (Oakland, CA), Hale; Darrian J. (San Jose, CA), Thompson; David C. (Livermore, CA)

    2010-07-13

    A system and method of monitoring and analyzing a plurality of attributes for an alarm condition is disclosed. The attributes are processed and/or unprocessed values of sensed conditions of a collection of a statistically significant number of statistically similar components subjected to varying environmental conditions. The attribute values are used to compute the normal behaviors of some of the attributes and also used to infer parameters of a set of models. Relative probabilities of some attribute values are then computed and used along with the set of models to determine whether an alarm condition is met. The alarm conditions are used to prevent or reduce the impact of impending failure.

  16. System and method for statistically monitoring and analyzing sensed conditions

    DOE Patents [OSTI]

    Pebay, Philippe P. (Livermore, CA); Brandt, James M. (Dublin, CA); Gentile, Ann C. (Dublin, CA); Marzouk, Youssef M. (Oakland, CA); Hale, Darrian J. (San Jose, CA); Thompson, David C. (Livermore, CA)

    2011-01-25

    A system and method of monitoring and analyzing a plurality of attributes for an alarm condition is disclosed. The attributes are processed and/or unprocessed values of sensed conditions of a collection of a statistically significant number of statistically similar components subjected to varying environmental conditions. The attribute values are used to compute the normal behaviors of some of the attributes and also used to infer parameters of a set of models. Relative probabilities of some attribute values are then computed and used along with the set of models to determine whether an alarm condition is met. The alarm conditions are used to prevent or reduce the impact of impending failure.

  17. System and method for statistically monitoring and analyzing sensed conditions

    DOE Patents [OSTI]

    Pebay, Philippe P. (Livermore, CA); Brandt, James M. (Dublin, CA); Gentile, Ann C. (Dublin, CA); Marzouk, Youssef M. (Oakland, CA); Hale, Darrian J. (San Jose, CA); Thompson, David C. (Livermore, CA)

    2011-01-04

    A system and method of monitoring and analyzing a plurality of attributes for an alarm condition is disclosed. The attributes are processed and/or unprocessed values of sensed conditions of a collection of a statistically significant number of statistically similar components subjected to varying environmental conditions. The attribute values are used to compute the normal behaviors of some of the attributes and also used to infer parameters of a set of models. Relative probabilities of some attribute values are then computed and used along with the set of models to determine whether an alarm condition is met. The alarm conditions are used to prevent or reduce the impact of impending failure.

  18. Method and apparatus of assessing down-hole drilling conditions

    DOE Patents [OSTI]

    Hall, David R. (Provo, UT); Pixton, David S. (Lehl, UT); Johnson, Monte L. (Orem, UT); Bartholomew, David B. (Springville, UT); Fox, Joe (Spanish Fork, UT)

    2007-04-24

    A method and apparatus for use in assessing down-hole drilling conditions are disclosed. The apparatus includes a drill string, a plurality of sensors, a computing device, and a down-hole network. The sensors are distributed along the length of the drill string and are capable of sensing localized down-hole conditions while drilling. The computing device is coupled to at least one sensor of the plurality of sensors. The data is transmitted from the sensors to the computing device over the down-hole network. The computing device analyzes data output by the sensors and representative of the sensed localized conditions to assess the down-hole drilling conditions. The method includes sensing localized drilling conditions at a plurality of points distributed along the length of a drill string during drilling operations; transmitting data representative of the sensed localized conditions to a predetermined location; and analyzing the transmitted data to assess the down-hole drilling conditions.

  19. Seminar 14 - Desiccant Enhanced Air Conditioning: Desiccant Enhanced Evaporative Air Conditioning (Presentation)

    SciTech Connect (OSTI)

    Kozubal, E.

    2013-02-01

    This presentation explains how liquid desiccant based coupled with an indirect evaporative cooler can efficiently produce cool, dry air, and how a liquid desiccant membrane air conditioner can efficiently provide cooling and dehumidification without the carryover problems of previous generations of liquid desiccant systems. It provides an overview to a liquid desiccant DX air conditioner that can efficiently provide cooling and dehumidification to high latent loads without the need for reheat, explains how liquid desiccant cooling and dehumidification systems can outperform vapor compression based air conditioning systems in hot and humid climates, explains how liquid desiccant cooling and dehumidification systems work, and describes a refrigerant free liquid desiccant based cooling system.

  20. A study on the maximum power transfer condition in an inductively coupled plasma using transformer circuit model

    SciTech Connect (OSTI)

    Kim, Young-Do; Lee, Hyo-Chang; Chung, Chin-Wook [Department of Electrical Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791 (Korea, Republic of)] [Department of Electrical Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791 (Korea, Republic of)

    2013-09-15

    Correlations between the external discharge parameters (the driving frequency ? and the chamber dimension R) and plasma characteristics (the skin depth ? and the electron-neutral collision frequency ?{sub m}) are studied using the transformer circuit model [R. B. Piejak et al., Plasma Sources Sci. Technol. 1, 179 (1992)] when the absorbed power is maximized in an inductively coupled plasma. From the analysis of the transformer circuit model, the maximum power transfer conditions, which depend on the external discharge parameters and the internal plasma characteristics, were obtained. It was found that a maximum power transfer occurs when ??0.38R for the discharge condition at which ?{sub m}/??1, while it occurs when ???(2)?(?/?{sub m})R for the discharge condition at which ?{sub m}/??1. The results of this circuit analysis are consistent with the stable last inductive mode region of an inductive-to-capacitive mode transition [Lee and Chung, Phys. Plasmas 13, 063510 (2006)], which was theoretically derived from Maxwell's equations. Our results were also in agreement with the experimental results. From this work, we demonstrate that a simple circuit analysis can be applied to explain complex physical phenomena to a certain extent.

  1. EPRICON: Agentless flue gas conditioning for electrostatic precipitators

    SciTech Connect (OSTI)

    Bibbo, P.P. [Research-Cottrell, Inc., Branchburg, NJ (United States)

    1995-09-01

    Achieving efficient particulate control in coal burning electric utility plants is becoming an increasingly difficult proposition, giver, the variety of regulatory, technical, operating and environmental pressures that exist in the US. For most powerplants, particulate control is achieved by an electrostatic precipitator (ESP). Under optimal conditions, modern ESPs are capable of achieving particulate removal efficiencies of 99.7 %. Unfortunately, optimal conditions are not always present. ESP`s are sensitive to flue gas conditions, and those conditions may change dramatically after a fuel switch or the installation of some types of emissions control technology upstream of the ESP. Gas conditioning has been shown to be an effective means of returning flue gas to the ``optimal`` conditions required for efficient ESP operation following a fuel switch to a low, or at least, lower sulfur coal. Borrowing technology common in conventional soap-making plants around the turn of the century, sulfur-burning SO3 gas conditioning has been the solution to may difficult fuels in electrostatic precipitators. Although it has contributed most to improved ESP performance after a fuel switch, conventional gas conditioning has significant drawbacks. In an effort to develop an alternative to conventional SO{sub 3} gas conditioning, the Electric Power Research Institute (EPRI) initiated a research and development project that has produced an alternative and modem technology for flue gas conditioning, now called EPRICON, and licensed it to Research-Cottrell. This article describes the EPRICON process and its performance in pilot and demonstration plants.

  2. Autoionization of water: does it really occur?

    E-Print Network [OSTI]

    Artemov, V G; Sysoev, N N; Volkov, A A

    2015-01-01

    The ionization constant of water Kw is currently determined on the proton conductivity sigma1 which is measured at frequencies lower than 10^7 Hz. Here, we develop the idea that the high frequency conductivity sigma2 (~10^11 Hz), rather than sigma1 represents a net proton dynamics in water, to evaluate the actual concentration c of H3O+ and OH- ions from sigma2. We find c to be not dependent on temperature to conclude that i) water electrodynamics is due to a proton exchange between H3O+ (or OH-) ions and neutral H2O molecules rather than spontaneous ionization of H2O molecules, ii) the common Kw (or pH) reflects the thermoactivation of the H3O+ and OH- ions from the potential of their interaction, iii) the lifetime of a target water molecule does not exceed parts of nanosecond.

  3. Effect of power oscillations on suppression pool heating during ATWS (Anticipated Transients Without Scram) conditions

    SciTech Connect (OSTI)

    Wulff, W.; Cheng, H.S.; Mallen, A.N.

    1990-01-01

    Nine selected Anticipated Transients Without Scram (ATWS) have been simulated on the BNL Engineering Plant Analyzer (EPA), to determine how power and flow oscillations, similar to those that did or could have occurred at the LaSalle-2 boiling Water Reactor (BWR), could affect the rate of Pressure Suppression Pool heating. It has been determined that the pool can reach its temperature limit of 80{degree}C in 4.3 min. after Turbine Trip without Bypass, if the feedwater pumps are not tripped. The pool will not reach its limit, if Boron is injected, even when oscillations are encountered. Simultaneous turbine and recirculation pump trips, introduced under stable conditions, can lead to instability. 2 refs., 17 figs., 9 tabs.

  4. INVESTIGATION OF THE POTENTIAL FOR CAUSTIC STRESS CORROSION CRACKING OF A537 CARBON STEEL NUCLEAR WASTE TANKS

    SciTech Connect (OSTI)

    Lam, P.

    2009-10-15

    The evaporator recycle streams contain waste in a chemistry and temperature regime that may be outside of the current waste tank corrosion control program, which imposes temperature limits to mitigate caustic stress corrosion cracking (CSCC). A review of the recent service history (1998-2008) of Tanks 30 and 32 showed that these tanks were operated in highly concentrated hydroxide solution at high temperature. Visual inspections, experimental testing, and a review of the tank service history have shown that CSCC has occurred in uncooled/un-stress relieved F-Area tanks. Therefore, for the Type III/IIIA waste tanks the efficacy of the stress relief of welding residual stress is the only corrosion-limiting mechanism. The objective of this experimental program is to test carbon steel small scale welded U-bend specimens and large welded plates (12 x 12 x 1 in.) in a caustic solution with upper bound chemistry (12 M hydroxide and 1 M each of nitrate, nitrite, and aluminate) and temperature (125 C). These conditions simulate worst-case situations in Tanks 30 and 32. Both as-welded and stress-relieved specimens have been tested. No evidence of stress corrosion cracking was found in the U-bend specimens after 21 days of testing. The large plate test is currently in progress, but no cracking has been observed after 9 weeks of immersion. Based on the preliminary results, it appears that the environmental conditions of the tests are unable to develop stress corrosion cracking within the duration of these tests.

  5. On the Beavers-Joseph-Saffman boundary condition for curved interfaces

    E-Print Network [OSTI]

    Sren Dobberschtz

    2015-04-22

    The appropriate boundary condition between an unconfined incompressible viscous fluid and a porous medium is given by the law of Beavers and Joseph. The latter has been justified both experimentally and mathematically, using the method of periodic homogenisation. However, all results so far deal only with the case of a planar boundary. In this work, we consider the case of a curved, macroscopically periodic boundary. By using a coordinate transformation, we obtain a description of the flow in a domain with a planar boundary, for which we derive the effective behaviour: The effective velocity is continuous in normal direction. Tangential to the interface, a slip occurs. Additionally, a pressure jump occurs. The magnitude of the slip velocity as well as the jump in pressure can be determined with the help of a generalised boundary layer function. The results indicate the validity of a generalised law of Beavers and Joseph, where the geometry of the interface has an influence on the slip and jump constants.

  6. Worldwide, accelerating glacier loss provides independent and startling evidence that global warming is occurring1 It is now clear that the Earth is warming rapidly due to man-made emissions of carbon dioxide and other heat-trap-

    E-Print Network [OSTI]

    Combes, Stacey A.

    such as coal, oil and natural gas are burned for trans- portation, heating, or the production of electricity! Climate Change And Global Glacier Decline Global Warming is melting glaciers in every region of the world that global warming is occurring1 . It is now clear that the Earth is warming rapidly due to man

  7. Early blight, caused by the fungus Alternaria, and Septoria leaf spot, caused by the fungus Septoria, are two destructive tomato diseases which occur each year in the northeastern United States. Both fungi

    E-Print Network [OSTI]

    New Hampshire, University of

    Septoria, are two destructive tomato diseases which occur each year in the northeastern United States. Both. Septoria overwinters in crop debris. Tomato Leaf Spots Family, Home & Garden Education Center practical of lines in tan centers. Fruit spots on stem end, inch No fruit spots. in diameter, dark, leathery

  8. The notion that new neurons are added to the adult brain has been the subject of controversy ever since the mid-1980s, when Fernando Nottebohm's lab reported that adult neurogenesis occurs in the

    E-Print Network [OSTI]

    Liu, Taosheng

    reports of adult neurogenesis overthrew a roughly one-hundred year old phenomenon stating that neuronalThe notion that new neurons are added to the adult brain has been the subject of controversy ever since the mid-1980s, when Fernando Nottebohm's lab reported that adult neurogenesis occurs in the canary

  9. The behavior of the fission products, as they are released from fission events during nuclear reaction, plays an important role in nuclear fuel performance. Fission product release can occur through grain

    E-Print Network [OSTI]

    The behavior of the fission products, as they are released from fission events during nuclear reaction, plays an important role in nuclear fuel performance. Fission product release can occur through concentration distribution and decreased the overall mass flux. Finally, radial temperature and fission gas

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

    E-Print Network [OSTI]

    Zhang, Jun; Seyfried, Armin

    2015-01-01

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

  11. DOE Challenge Home Technical Training - Ducts in Conditioned...

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

    of the U.S. Department of Energy Challenge Home program: Design Options for Locating Ducts within Conditioned Space. challengehometechnicaltraining.pdf More Documents &...

  12. DOE Announces Webinars on High Performance Space Conditioning...

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

    Consortium for Advanced Residential Buildings, presenting design options for locating ducts within conditioned space; Dave Mallay of the Partnership for Home Innovation,...

  13. Evaluation of wall boundary condition parameters for gas-solids...

    Office of Scientific and Technical Information (OSTI)

    predictions of various gas-solids fluidized beds. Several models for the granular flow wall boundary condition are available in the open literature for numerical modeling of...

  14. Sustainability and Market Conditions:The Resource Efficiency paradox

    E-Print Network [OSTI]

    Delmas, Magali; Pekovic, Sanja

    2012-01-01

    Economics 23, 1- 14. Sustainability and Market Conditionsof environmental sustainability. Management InternationalJournal 44, 170-179. Sustainability and Market Conditions

  15. Normal Conditions of Transport Truck Test of a Surrogate Fuel...

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

    Normal Conditions of Transport Truck Test of a Surrogate Fuel Assembly. McConnell, Paul E.; Wauneka, Robert; Saltzstein, Sylvia J.; Sorenson, Ken B. Abstract not provided. Sandia...

  16. Matrix multiplication operations with data pre-conditioning in...

    Office of Scientific and Technical Information (OSTI)

    operations with data pre-conditioning in a high performance computing architecture Citation Details In-Document Search Title: Matrix multiplication operations with...

  17. Department of Energy Offers Conditional Loan Guarantee Commitments...

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

    Guarantee Commitments to Support Nearly 4.5 Billion in Loans for Three California Photovoltaic Solar Power Plants Department of Energy Offers Conditional Loan Guarantee...

  18. optimal initial conditions for coupling ice sheet models to earth...

    Office of Scientific and Technical Information (OSTI)

    optimal initial conditions for coupling ice sheet models to earth system models Perego, Mauro Sandia National Laboratories Sandia National Laboratories; Price, Stephen F. Dr...

  19. Numerical Modeling of the Nucleation Conditions of Petal-Centerline...

    Open Energy Info (EERE)

    Numerical Modeling of the Nucleation Conditions of Petal-Centerline Fractures below a Borehole Floor, A Sensitivity Study and Application to the Coso Geothermal Field Jump to:...

  20. Spatial and temporal variations in indoor environmental conditions...

    Office of Scientific and Technical Information (OSTI)

    beam-break counters; and outdoor air fractions in the heating, ventilating, and air-conditioning systems serving the sampled spaces. Measurements were made at 5-minute intervals...

  1. Evaluation of alkali concentration in conditions relevant to...

    Office of Scientific and Technical Information (OSTI)

    Evaluation of alkali concentration in conditions relevant to oxygennatural gas glass furnaces by laser-induced breakdown spectroscopy. Citation Details In-Document Search Title:...

  2. Body Condition, Nutrition and Reproduction of Beef Cows

    E-Print Network [OSTI]

    Herd, Dennis B.; Sprott, L. R.

    1998-03-16

    . This implies that cows scor- ing less than 5 at calving need to be fed to improve their condition through breeding, which is expensive to accomplish while they are nursing calves. If cows scoring 5 or less lose condition from calving to breeding, pregnancy... rates will be reduced. Cows scoring 7 or 8 can probably lose some condition and still breed well provided they do not lose enough to bring their score below 5. An efficient way to utilize BCS involves sorting cows by condition 90 to 100 days prior...

  3. High?Penetration PV with Advanced Power Conditioning Systems

    Office of Energy Efficiency and Renewable Energy (EERE)

    Virginia Polytechnic Institute and State University (VT) is evaluating the impacts of high photovoltaic (PV) penetration and methods to manage any impacts with improved power conditioning equipment.

  4. Energy and Water Use in Irrigated Agriculture During Drought Conditions

    E-Print Network [OSTI]

    Ritschard, R.L.

    2011-01-01

    DROUGHT CONDITIONS OF 1977. Increased Use of Ground Water.Increased Efficiency of Water Application.Reduce Water Application . . . . Cropping Pattern Changes in

  5. Matrix multiplication operations with data pre-conditioning in...

    Office of Scientific and Technical Information (OSTI)

    Matrix multiplication operations with data pre-conditioning in a high performance computing architecture Eichenberger, Alexandre E; Gschwind, Michael K; Gunnels, John A Mechanisms...

  6. Department of Energy Offers Conditional Loan Guarantee Commitment...

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

    Commitment for Innovative Photovoltaic Solar Power Plant Department of Energy Offers Conditional Loan Guarantee Commitment for Innovative Photovoltaic Solar Power Plant June 15,...

  7. Spatial and temporal variations in indoor environmental conditions...

    Office of Scientific and Technical Information (OSTI)

    conditions, human occupancy, and operational characteristics in a new hospital building Prev Next Title: Spatial and temporal variations in indoor environmental...

  8. Department of Energy Offers Conditional Loan Guarantee Commitments...

    Energy Savers [EERE]

    4.5 billion, to support three alternating current Cadmium Telluride (Cd-Te) thin film photovoltaic (PV) solar generation facilities. The Department is offering a conditional...

  9. Heat content asymptotics with transmittal and transmission boundary conditions

    E-Print Network [OSTI]

    Peter Gilkey; Klaus Kirsten

    2002-06-14

    We study the heat content asymptotics on a Riemannian manifold with smoooth boundary defined by Dirichlet, Neumann, transmittal and transmission boundary conditions.

  10. Perceptually Based Tone Mapping for Low-Light Conditions

    E-Print Network [OSTI]

    Kirk, Adam

    2011-01-01

    Christopher and Kathleen Kirk. ii Contents List of FiguresConditions by Adam Garnet Kirk A dissertation submitted inCopyright 2011 by Adam Garnet Kirk Abstract Perceptually

  11. Energy Department Conditionally Authorizes Cameron LNG to Export...

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

    Cameron LNG to Export Liquefied Natural Gas Energy Department Conditionally Authorizes Cameron LNG to Export Liquefied Natural Gas February 11, 2014 - 11:15am Addthis WASHINGTON -...

  12. Energy Department Conditionally Authorizes Oregon LNG to Export...

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

    WASHINGTON - The Energy Department announced today that it has conditionally authorized LNG Development Co., LLC (Oregon LNG) to export domestically produced liquefied natural gas...

  13. An outflow boundary condition and algorithm for incompressible two ...

    E-Print Network [OSTI]

    S. Dong

    2014-03-05

    Feb 22, 2014 ... conditions for the phase field function on each boundary, which ...... These velocity histories indicate that the oilwater two-phase flow has...

  14. Department of Energy Offers $2 Billion in Conditional Loan Guarantee...

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

    of Energy Offers 2 Billion in Conditional Loan Guarantee Commitments for Two California Concentrating Solar Power Plants Department of Energy Offers 2 Billion in...

  15. CFD Combustion Modeling with Conditional Moment Closure using Tabulated Chemistry

    Broader source: Energy.gov [DOE]

    A method is presented that allows for efficient conditional moment closure combustion simulations through the use of a progress variable based parameterization of the combustion chemistry.

  16. Aggregated Modeling and Control of Air Conditioning Loads for...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Aggregated Modeling and Control of Air Conditioning Loads for Demand Response Citation Details In-Document Search Title: Aggregated Modeling and Control of Air...

  17. Offshore Resource Assessment and Design Conditions Public Meeting...

    Office of Environmental Management (EM)

    Resource Assessment and Design Conditions Public Meeting More Documents & Publications Marine and Hydrokinetic Energy Projects 2014 Water Power Peer Review Report Before the...

  18. DOE Announces Webinars on On-Bill Financing, Design Conditions...

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

    energy generation. Register for the webinar. January 15: Design Conditions for the Hurricane Metocean Environment Webcast Sponsor: WINDExchange The Energy Department will...

  19. Stabilization of Pt monolayer catalysts under harsh conditions...

    Office of Scientific and Technical Information (OSTI)

    Stabilization of Pt monolayer catalysts under harsh conditions of fuel cells Citation Details In-Document Search This content will become publicly available on May 21, 2016 Title:...

  20. The Effects of Oxy-firing Conditions on Gas-phase Mercury Oxidation by Chlorine and Bromine

    SciTech Connect (OSTI)

    Buitrago, Paula; Silcox, Geoffrey

    2010-06-30

    Bench-scale experiments were conducted in a quartz-lined, natural gas-fired reactor with the combustion air replaced with a blend of 27 mole percent oxygen, with the balance carbon dioxide. Quench rates of 210 and 440 K/s were tested. In the absence of sulfur dioxide, the oxy-firing environment caused a remarkable increase in oxidation of mercury by chlorine. At 400 ppm chlorine (as HCl equivalent), air-firing results in roughly 5 percent oxidation. At the same conditions with oxy-firing, oxidation levels are roughly 80 percent. Oxidation levels with bromine at 25 and 50 ppm (as HBr equivalent) ranged from 80 to 95 percent and were roughly the same for oxy- and air-firing conditions. Kinetic calculations of levels of oxidation at air- and oxy-conditions captured the essential features of the experimental results but have not revealed a mechanistic basis for the oxidative benefits of oxy-firing conditions. Mixtures of 25 ppm bromine and 100 and 400 ppm chlorine gave more than 90 percent oxidation. At all conditions, the effects of quench rate were not significant. The presence of 500 ppm SO2 caused a dramatic decline in the levels of oxidation at all oxy-fired conditions examined. This effect suggests that SO2 may be preventing oxidation in the gas phase or preventing oxidation in the wetconditioning system that was used in quantifying oxidized and elemental mercury concentrations. Similar effects of SO2 have been noted with air-firing. The addition of sodium thiosulfate to the hydroxide impingers that are part of wet conditioning systems may prevent liquid-phase oxidation from occurring.

  1. Building America Webinar: High Performance Space Conditioning Systems, Part I: Simplified Space Conditioning in Low Load Homes

    Broader source: Energy.gov [DOE]

    This presentation was delivered at the U.S. Department of Energy Building America webinar, High Performance Space Conditioning Systems, Part I, on October 23, 2014.

  2. Test Methods and Protocols for Environmental and Safety Hazards Associated with Home Energy Retrofits

    SciTech Connect (OSTI)

    Cautley, D.; Viner, J.; Lord, M.; Pearce, M.

    2012-12-01

    A number of health hazards and hazards to the durability of homes may be associated with energy retrofitting and home renovation projects. Among the hazards associated with energy retrofit work, exposure to radon is thought to cause more than 15,000 deaths per year in the U.S., while carbon monoxide poisoning results in about 20,000 injuries and 450 deaths per year. Testing procedures have been developed for identifying and quantifying hazards during retrofitting. These procedures commonly include a battery of tests to screen combustion appliances for safe operation, including worst case depressurization measurement, backdrafting (spillage) under depressurized or normal conditions, and carbon monoxide production.

  3. Thermal control system for SSF sensor/electronics

    SciTech Connect (OSTI)

    Akau, R.L.; Lee, D.E.

    1992-12-31

    As part of the Defense Meteorological Support Program (DMSP) with Martin Marieta Astro-Space Division, a thermal control system was designed for the SSF (Special Sensor F) sensor/electronics box (SSTACK) located on the precision mounting platform of the DMSP satellite. Multi-layer insulation and heaters are used to maintain the temperatures of the critical components within their operating and survival temperature limits. Detailed and simplified SSTACK thermal models were developed and temperatures were calculated for worst-case orbital conditions. A comparison between the two models showed very good agreement. Temperature predictions were also compared to measured temperatures from a thermal-vacuum test

  4. Conditional Regression Forests for Human Pose Estimation Pushmeet Kohli

    E-Print Network [OSTI]

    Kohli, Pushmeet

    Conditional Regression Forests for Human Pose Estimation Min Sun Pushmeet Kohli Jamie Shotton estimation from depth images. The conditional regression model proposed in the paper is general and can body joint prediction as a regression problem which avoids intermediate body part classification

  5. Aerodynamic Optimization Under a Range of Operating Conditions

    E-Print Network [OSTI]

    Zingg, David W.

    Aerodynamic Optimization Under a Range of Operating Conditions David W. Zingg and Samy Elias. This can be achieved through multipoint optimization. The desired performance objective and operating conditions must be speci ed, and the resulting optimization problem must be solved in such a manner

  6. Direct Digital Control in Air Conditioning Systems for Energy Efficiency

    E-Print Network [OSTI]

    Liu, W.; Ye, A.; Li, D.

    2006-01-01

    the function and the level of the building, but also save energy. At present, air-conditioning design in internal commercial buildings is becoming more complex and enormous. The proportion of air conditioning systems in the whole building is getting larger...

  7. K-7109Agnew Hall M-2204Air Conditioning Plant

    E-Print Network [OSTI]

    K-7109Agnew Hall M-2204Air Conditioning Plant M-833Ambler Johnston Hall - East Wing M-832Ambler is an equal opportunity, affirmative action institution. K-7109 Agnew Hall 460 West Campus Dr M-2204 Air Conditioning Plant 344 Stanger St M-833 Ambler Johnston Hall - East Wing 700 Washington St SW M-832 Ambler

  8. ON CONDITION MONITORING OF EXHAUST VALVES IN MARINE DIESEL ENGINES

    E-Print Network [OSTI]

    Mosegaard, Klaus

    ON CONDITION MONITORING OF EXHAUST VALVES IN MARINE DIESEL ENGINES T. L. Fog x L. K. Hansen z , J : Research & Development, MAN B&W Diesel A/S Teglholmsgade 41, DK2450, Copenhagen SV, Denmark. Email: tofinvasive characterisation of ex haust valve conditions in large marine diesel engines, were exper imentally investigated

  9. Utility maximization in models with conditionally independent increments

    E-Print Network [OSTI]

    Kallsen, Jan

    Utility maximization in models with conditionally independent increments Jan Kallsen Johannes Muhle-Karbe Abstract We consider the problem of maximizing expected utility from terminal wealth in models for power utility under the assumption that the increments of the asset price are independent conditionally

  10. Une interpretation cohomologique de la condition de Radon-Cavalieri

    E-Print Network [OSTI]

    D'Agnolo, Andrea

    Une interpretation cohomologique de la condition de Radon-Cavalieri Andrea D'Agnolo R les D-modules `a l'etude de la transformee de Radon affine reelle. Classiquement, on obtient la est differente, et montre comment cette condition, liee `a la transformee de Radon projective

  11. Radon Transform and Cavalieri Condition: a Cohomological Approach

    E-Print Network [OSTI]

    D'Agnolo, Andrea

    Radon Transform and Cavalieri Condition: a Cohomological Approach Andrea D'Agnolo Abstract We apply the theory of integral transforms for sheaves and D-modules to the study of the real Radon transform. J. 93 (1998), no. 3, 597632. #12;Radon Transform and Cavalieri Condition: a Cohomological Approach

  12. CONDITIONS OF HOUSING CONTRACT 1 University Services ...........................2

    E-Print Network [OSTI]

    Yoo, S. J. Ben

    CONDITIONS OF HOUSING CONTRACT 1 University Services ...........................2 2 Room & Board. The university is an affirmative action/equal opportunity employer. SUMMER SESSION 2015 CONDITIONS OF HOUSING CONTRACT UNIVERSITY OF CALIFORNIA, DAVIS UC Davis Conference Housing. University of California. One Shields

  13. Environmental Conditions for Ocean Drilling Program Operations in

    E-Print Network [OSTI]

    Environmental Conditions for Ocean Drilling Program Operations in the Weddell Sea and Sub Library. #12;ENVIRONMENTAL CONDITIONS FOR OCEAN DRILLING PROGRAM LEG 113 (WEDDELL SEA) AND LEG 114 (SUBANTARCTIC SOUTH ATLANTIC) PROPOSED DRILLING SCHEDULE: JANUARY-APRIL, 1987 MAY 30, 1986 HAN CHOI AMANDA

  14. Selecting indicators of soil, microbial, and plant conditions to understand ecological changes in Georgia pine forests

    SciTech Connect (OSTI)

    Dale, Virginia H; Garten Jr, Charles T; Wolfe, Amy K; Sobek, Edward A

    2008-11-01

    Characterizing how resource use and management activities affect ecological conditions is necessary to document and understand anthropogenic changes in ecological systems. Resource managers on military installations have the delicate task of balancing the training needs of soldiers effectively with the need to maintain a high quality of ecological conditions. This study considers ways that ecological indicators can provide information on impacts that training has on environmental characteristics that occur at different scales and in different sectors of the environment. The characteristics examined include soil chemistry, soil microbes, and vegetation. A discriminant function analysis was conducted to determine whether ecological indicators could differentiate among different levels of military use. A combination of 10 indicators explained 90% of the variation among plots from five different military use levels. Results indicated that an appropriate suite of ecological indicators for military resource managers includes soil, microbial, and vegetation characteristics. Since many of these indicators are related, managers at this location potentially have freedom to choose indicators that are relatively easy to measure, without sacrificing information.

  15. A comparative study of $2d$ Ising model at different boundary conditions using Cellular Automata

    E-Print Network [OSTI]

    Mohammed, Jahangir

    2016-01-01

    Using Cellular Automata, we simulate spin systems corresponding to $2d$ Ising model with various kinds of boundary conditions (bcs). The appearance of spontaneous magnetization in the absence of magnetic field is studied with a $64\\times64$ square lattice with five different bcs, i.e., periodic, adiabatic, reflexive, fixed ($+1$ or $-1$) bcs with three initial conditions (all spins up, all spins down and random orientation of spins). In the context of $2d$ Ising model, we have calculated the magnetisation, energy, specific heat, susceptibility and entropy with each of the bcs and observed that the phase transition occurs around $T_c$ = 2.269 as obtained by Onsager. We compare the behaviour of magnetisation vs temperature for different types of bcs by calculating the number of points close to the line of zero magnetisation after $T>T_c$ at various lattice sizes. We observe that the periodic, adiabatic and reflexive bcs give closer approximation to the value of $T_c$ than fixed +1 and fixed -1 bcs with all thre...

  16. Module Development and Simulation of the Variable Refrigerant Flow Air Conditioning System under Cooling Conditions in Energyplus

    E-Print Network [OSTI]

    Zhou, Y.; Wu, J.; Wang, R.; Shiochi, S.

    2006-01-01

    As a high-efficiency air conditioning scheme, the variable refrigerant flow (VRF) air-conditioning system is finding its way into medium-sized office buildings. Based on a generic dynamic building energy simulation environment, EnergyPlus, a new...

  17. Effects of operating conditions on a heat transfer fluid aerosol

    E-Print Network [OSTI]

    Sukmarg, Passaporn

    2000-01-01

    fluids are used as hot liquids at elevated pressures. If loss of containment does occur, the liquid will leak under pressure and may disperse as a fine aerosol mist. Though it has been recognized that aerosol mists can explode, very little is known about...

  18. A study for the static properties of symmetric linear multiblock copolymers under poor solvent conditions

    E-Print Network [OSTI]

    Panagiotis E. Theodorakis; Nikolaos G. Fytas

    2012-03-01

    We use a standard bead-spring model and molecular dynamics simulations to study the static properties of symmetric linear multiblock copolymer chains and their blocks under poor solvent conditions in a dilute solution from the regime close to theta conditions, where the chains adopt a coil-like formation, to the poorer solvent regime where the chains collapse obtaining a globular formation and phase separation between the blocks occurs. We choose interaction parameters as is done for a standard model, i.e., the Lennard-Jones fluid and we consider symmetric chains, i.e., the multiblock copolymer consists of an even number $n$ of alternating chemically different A and B blocks of the same length $N_{A}=N_{B}=N$. We show how usual static properties of the individual blocks and the whole multiblock chain can reflect the phase behavior of such macromolecules. Also, how parameters, such as the number of blocks $n$ can affect properties of the individual blocks, when chains are in a poor solvent for a certain range of $n$. A detailed discussion of the static properties of these symmetric multiblock copolymers is also given. Our results in combination with recent simulation results on the behavior of multiblock copolymer chains provide a complete picture for the behavior of these macromolecules under poor solvent conditions, at least for this most symmetrical case. Due to the standard choice of our parameters, our system can be used as a benchmark for related models, which aim at capturing the basic aspects of the behavior of various biological systems.

  19. Air conditioning system with supplemental ice storing and cooling capacity

    DOE Patents [OSTI]

    Weng, Kuo-Lianq (Taichung, TW); Weng, Kuo-Liang (Taichung, TW)

    1998-01-01

    The present air conditioning system with ice storing and cooling capacity can generate and store ice in its pipe assembly or in an ice storage tank particularly equipped for the system, depending on the type of the air conditioning system. The system is characterized in particular in that ice can be produced and stored in the air conditioning system whereby the time of supplying cooled air can be effectively extended with the merit that the operation cycle of the on and off of the compressor can be prolonged, extending the operation lifespan of the compressor in one aspect. In another aspect, ice production and storage in great amount can be performed in an off-peak period of the electrical power consumption and the stored ice can be utilized in the peak period of the power consumption so as to provide supplemental cooling capacity for the compressor of the air conditioning system whereby the shift of peak and off-peak power consumption can be effected with ease. The present air conditioning system can lower the installation expense for an ice-storing air conditioning system and can also be applied to an old conventional air conditioning system.

  20. Wind Turbine Drivetrain Condition Monitoring - An Overview (Presentation)

    SciTech Connect (OSTI)

    Sheng, S.; Yang, W.

    2013-07-01

    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.

  1. Body Condition, Nutrition and Reproduction of Beef Cows.

    E-Print Network [OSTI]

    Herd, Dennis B.; Sprott, L.R.

    1986-01-01

    or more through breeding. This implies that cows scor ing less than 5 at calving need to be fed to improve their condition through breeding, which is expensive to accomplish while they are nursing calves . If cows scoring 5 or less lose condition from... calving to breeding, pregnancy rates will be reduced. Cows scoring 7 or 8 can probably lose some condition and still breed well provided they do not lose enough to bring their score below 5. An efficient way to utilize BCS involves sorting cows...

  2. Universal QGP Hadronization Conditions at RHIC and LHC

    E-Print Network [OSTI]

    Johann Rafelski; Michal Petran

    2014-06-07

    We address the principles governing QGP hadronization and particle production in relativistic heavy-ion collisions. We argue that chemical non-equilibrium is required and show that once this condition is assumed a very good description of hadron production in collider RHIC and at LHC heavy ion experiments follows. We present results of our analysis as a function of centrality. Comparing most extreme experimental conditions we show that only the reaction volume and degree of strangeness phase space saturation change. We determine the universal QGP fireball hadronization conditions.

  3. Evaluation of Laboratory Conditioning Protocols for Warm-Mix Asphalt

    E-Print Network [OSTI]

    Yin, Fan 1990-

    2012-10-26

    ) and off-site Plant Mixed Laboratory Compacted (PMLC) specimens were selected, and their effects on mixture properties were evaluated. Mixture stiffness evaluated in a dry condition using the Resilient Modulus (MR) test (ASTM D-7369) was the main parameter...

  4. DOE Webinar: Retrofitting Central Space Conditioning Strategies for Multifamily Buildings

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Building America Program is hosting a no-cost, webinar-based training on Retrofitting Central Space Conditioning Strategies for Multifamily Buildings. The webinar will focus on improving the...

  5. DOE Zero Energy Ready Home Ducts in Conditioned Space Webinar...

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

    is design strategies for locating the ductwork within the conditioned envelope of the building. And this is sort of a must-have for zero energy ready homes, because if these homes...

  6. Geometric sufficient conditions for compactness of the ?-Neumann operator

    E-Print Network [OSTI]

    Munasinghe, Samangi

    2009-06-02

    For smooth bounded pseudoconvex domains in Cn, we provide geometric conditions on (the points of infinite type in) the boundary which imply compactness of the ?-Neumann operator. This is an extension of a theorem of Straube ...

  7. Entanglement conditions for two-mode states: Applications

    E-Print Network [OSTI]

    Hillery, Mark; Zubairy, M. Suhail

    2006-01-01

    We examine the implications of several recently derived conditions [Hillery and Zubairy, Phys. Rev. Lett. 96, 050503 (2006)] for determining when a two-mode state is entangled. We first find examples of non-Gaussian states ...

  8. The effect of foot conditions on constrained standing

    E-Print Network [OSTI]

    Barlow, Jessica Marie

    1996-01-01

    This study was conducted to find any differences in physiological effects, subjective rankings, or discomfort with respect to foot conditions in constrained standing. Eight healthy subjects, four female and four male, ...

  9. GABA Neurons of the VTA Drive Conditioned Place Aversion

    E-Print Network [OSTI]

    Tan, KellyR.

    Salient but aversive stimuli inhibit the majority of dopamine (DA) neurons in the ventral tegmental area (VTA) and cause conditioned place aversion (CPA). The cellular mechanism underlying DA neuron inhibition has not been ...

  10. DOE Offers Conditional Commitment to Cape Wind Offshore Wind...

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

    step toward issuing a 150 million loan guarantee to support the construction of the Cape Wind offshore wind project with a conditional commitment to Cape Wind Associates, LLC. The...

  11. Building America Top Innovations 2012: Unvented, Conditioned Crawlspaces

    SciTech Connect (OSTI)

    none,

    2013-01-01

    This Building America Top Innovations profile describes Building America research which influenced code requirements by demonstrating that unvented, conditioned crawlspaces use 15% to 18% less energy for heating and cooling while reducing humidity over 20% in humid climates.

  12. Topological conditions for the representation of preorders by continuous utilities

    E-Print Network [OSTI]

    E. Minguzzi

    2011-12-13

    We remove the Hausdorff condition from Levin's theorem on the representation of preorders by families of continuous utilities. We compare some alternative topological assumptions in a Levin's type theorem, and show that they are equivalent to a Polish space assumption.

  13. Belen Alexander Municipal Airport (E80) Pavement Condition and Analysis

    E-Print Network [OSTI]

    Cal, Mark P.

    . Lucero, AICP Airport Development Administrator New Mexico Aviation Division P.O. Box 9830 Albuquerque, NM Assuming No Maintenance 13 ..........Table 4. Predicted Pavement Conditions (PCI) Assuming no Maintenance ..............................................................6. Maintenance and Rehabilitation (M&R) Schedule 20

  14. Raton Municipal Airport (RTN) Pavement Condition and Analysis

    E-Print Network [OSTI]

    Cal, Mark P.

    Airport Development Administrator New Mexico Aviation Division P.O. Box 9830 Albuquerque, NM 87119 tel No Maintenance 14 ...............Table 4. Predicted Pavement Conditions (PCI) Assuming no Maintenance After 2007 .......................................................6. Maintenance and Rehabilitation (M&R) Sche

  15. Clayton Municipal Airport (CAO) Pavement Condition and Analysis

    E-Print Network [OSTI]

    Cal, Mark P.

    Airport Development Administrator New Mexico Aviation Division P.O. Box 9830 Albuquerque, NM 87119 tel No Maintenance 13 .....................Table 4. Predicted Pavement Conditions (PCI) Assuming no Maintenance 14 for Runway 12-30 (2010) 20 .......................................................6. Maintenance

  16. Moriarty Municipal Airport (0E0) Pavement Condition and Analysis

    E-Print Network [OSTI]

    Cal, Mark P.

    Airport Development Administrator New Mexico Aviation Division P.O. Box 9830 Albuquerque, NM 87119 tel .................................................................................................................Skid Resistance 13 ....................................................3. Airport Maintenance Completed Assuming No Maintenance 14 ...............Table 5. Predicted Pavement Conditions (PCI) Assuming

  17. Silver City Grant County Airport (SVC) Pavement Condition and Analysis

    E-Print Network [OSTI]

    Cal, Mark P.

    , AICP Airport Development Administrator New Mexico Aviation Division P.O. Box 9830 Albuquerque, NM 87119 No Maintenance 13 ...............Table 4. Predicted Pavement Conditions (PCI) Assuming no Maintenance After 2010 .......................................................6. Maintenance and Rehabilitation (M&R) Schedule 21

  18. Deming Municipal Airport (DMN) Pavement Condition and Analysis

    E-Print Network [OSTI]

    Cal, Mark P.

    Airport Development Administrator New Mexico Aviation Division P.O. Box 9830 Albuquerque, NM 87119 tel No Maintenance 16 2 #12;...............Table 4. Predicted Pavement Conditions (PCI) Assuming no Maintenance After

  19. Sierra Blanca Ruidoso Airport (SRR) Pavement Condition and Analysis

    E-Print Network [OSTI]

    Cal, Mark P.

    , AICP Airport Development Administrator New Mexico Aviation Division P.O. Box 9830 Albuquerque, NM 87119 No Maintenance 13 .................................Table 4. Predicted Pavement Conditions (PCI) Assuming no Maintenance 14 ..........................................Figure 7. Sierra Blanca Ruidoso (SRR) Predicted PCI

  20. Cursed Resources? Political Conditions and Oil Market Volatility*

    E-Print Network [OSTI]

    Edwards, Paul N.

    a country's political conditions affect oil production within its borders. We show production, with very democratic regimes exhibiting less volatility in their oil production than more of oil production volatility. Our finding has implications both for understanding world oil markets

  1. DOE Tribal Intern Aims to Improve Conditions in Indian Country...

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

    my life improving conditions in Indian County for all Native nations. I grew up in poverty and want to ensure that the sorts of problems I faced are no longer commonplace in...

  2. Power Conditioning and Control Applications for Energy Conservation

    E-Print Network [OSTI]

    Brushwood, J. S.

    1982-01-01

    Electrical power conditioning and control (PCC) systems are finding cost effective applications in AC motor drives, lamp ballasts and power supplies. Substantial system efficiency improvements are being realized when the appropriate PCC system...

  3. 16 USC 799 License duration, conditions, revocation, alteration...

    Open Energy Info (EERE)

    16 USC 799 License duration, conditions, revocation, alteration, or surrender Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- StatuteStatute: 16...

  4. Terms and Conditions of Study Sponsio Academica ......................................................................................................... 2

    E-Print Network [OSTI]

    Brierley, Andrew

    in an unbecoming or disorderly manner or shows insufficient diligence in their studies and, though admonished, does and conditions governing matriculated students of the University of St Andrews for the duration of my studies

  5. Effect of reactor conditions on MSIV-ATWS power level

    SciTech Connect (OSTI)

    Diamond, D.J.

    1987-01-01

    In a boiling water reactor (BWR) when there is closure of the main steam isolation valves (MSIVs), the energy generated in the core will be transferred to the pressure suppression pool (PSP) via steam that flows out of the relief valves. The pool has limited capacity as a heat sink and hence, if there is no reactor trip (an anticipated transient without scram (ATWS) event), there is the possibility that the pool temperature may rise beyond acceptable limits. The present study was undertaken to determine how the initial reactor conditions affect the power level during an MSIV-ATWS event. The time of interest is the 20- to 30-min period when it is assumed that the reactor is in a quasi equilibrium condition with the water level and pressure fixed, natural circulation conditions and no control rod movement or significant boron in the core. The initial conditions of interest are the time of the cycle and the operating state.

  6. Influence of contact conditions on thermal responses of the hand

    E-Print Network [OSTI]

    Galie, Jessica Anne

    2009-01-01

    The objective of the research conducted for this thesis was to evaluate the influence of contact conditions on the thermal responses of the finger pad and their perceptual effects. A series of experiments investigated the ...

  7. Department of Energy Offers Conditional Commitment for a Loan...

    Energy Savers [EERE]

    - 12:00am Addthis Washington, D.C. -- The U.S. Department of Energy today announced the offer of a conditional commitment for a 350 million loan guarantee to develop the One...

  8. Secretary Chu, Senator Reid Announce Department of Energy Conditional...

    Energy Savers [EERE]

    Energy Secretary Steven Chu and Senate Majority Leader Harry Reid today announced the offer of a conditional commitment to provide a partial guarantee for a 350 million loan for...

  9. Department of Energy Offers First Conditional Commitment for...

    Energy Savers [EERE]

    Addthis Washington D.C. --- U.S. Energy Secretary Steven Chu today announced the offer of a conditional commitment to Diamond Green Diesel, LLC, the proposed joint venture...

  10. Department of Energy Offers Conditional Commitment for a Loan...

    Office of Environmental Management (EM)

    Addthis Washington D.C. --- U.S. Energy Secretary Steven Chu today announced the offer of a conditional commitment to Record Hill Wind LLC for a 102 million loan guarantee....

  11. Uniformly Loaded Rectangular Thin Plates with Symmetrical Boundary Conditions

    E-Print Network [OSTI]

    Milan Batista

    2010-01-27

    In the article the Fourier series analytical solutions of uniformly loaded rectangular thin plates with symmetrical boundary conditions are considered. For all the cases the numerical values are tabulated.

  12. General Properties and Termination Conditions for Soft Constraint Propagation

    E-Print Network [OSTI]

    Rossi, Francesca

    General Properties and Termination Conditions for Soft Constraint Propagation S. Bistarelli (bista for its termination. 1. Introduction Soft constraints allow to model faithfully many reallife problems [14], probabilistic [10] and partial [11] constraints. The constraint propagation techniques usually

  13. Experimental studies of pedestrian flows under different boundary conditions

    E-Print Network [OSTI]

    Zhang, Jun

    2015-01-01

    In this article the dynamics of pedestrian streams in four different scenarios are compared empirically to investigate the influence of boundary conditions on it. The Voronoi method, which allows high resolution and small fluctuations of measured density in time and space, is used to analyze the experiments. It is found that pedestrian movement in systems with different boundary conditions (open, periodic boundary conditions and outflow restrained) presents various characteristics especially when the density is larger than 2 m-2. In open corridor systems the specific flow increases continuously with increasing density till 4 m-2. The specific flow keeps constant in systems with restrained outflow, whereas it decreases from 1 (m.s)-1 to zero in system with closed periodical condition.

  14. Traffic condition tracking and visualization in virtual city testbed

    E-Print Network [OSTI]

    Zhu, Boyuan, M. Eng. Massachusetts Institute of Technology

    2011-01-01

    Computer traffic simulation is a tool widely used to understand how humans behave under varying traffic conditions. The Virtual City Testbed is a traffic simulation framework built to closely model human behavior by allowing ...

  15. Designing a future Conditions Database based on LHC experience

    E-Print Network [OSTI]

    Formica, Andrea; The ATLAS collaboration; Gallas, Elizabeth; Govi, Giacomo; Lehmann Miotto, Giovanna; Pfeiffer, Andreas

    2015-01-01

    The ATLAS and CMS Conditions Database infrastructures have served each of the respective experiments well through LHC Run 1, providing efficient access to a wide variety of conditions information needed in online data taking and offline processing and analysis. During the long shutdown between Run 1 and Run 2, we have taken various measures to improve our systems for Run 2. In some cases, a drastic change was not possible because of the relatively short time scale to prepare for Run 2. In this process, and in the process of comparing to the systems used by other experiments, we realized that for Run 3, we should consider more fundamental changes and possibilities. We seek changes which would streamline conditions data management, improve monitoring tools, better integrate the use of metadata, incorporate analytics to better understand conditions usage, as well as investigate fundamental changes in the storage technology, which might be more efficient while minimizing maintenance of the data as well as simplif...

  16. Cosmological matching conditions and galilean genesis in Horndeski's theory

    SciTech Connect (OSTI)

    Nishi, Sakine; Kobayashi, Tsutomu [Department of Physics, Rikkyo University, Toshima, Tokyo, 175-8501 (Japan); Tanahashi, Norihiro [Kavli Institute for the Physics and Mathematics of the Universe (IPMU), The University of Tokyo, Kashiwa, Chiba, 277-8568 (Japan); Yamaguchi, Masahide, E-mail: sakine_n@rikkyo.ac.jp, E-mail: tsutomu@rikkyo.ac.jp, E-mail: norihiro.tanahashi@ipmu.jp, E-mail: gucci@phys.titech.ac.jp [Department of Physics, Tokyo Institute of Technology, Tokyo, 152-8551 (Japan)

    2014-03-01

    We derive the cosmological matching conditions for the homogeneous and isotropic background and for linear perturbations in Horndeski's most general second-order scalar-tensor theory. In general relativity, the matching is done in such a way that the extrinsic curvature is continuous across the transition hypersurface. This procedure is generalized so as to incorporate the mixing of scalar and gravity kinetic terms in the field equations of Horndeski's theory. Our matching conditions have a wide range of applications including the galilean genesis and the bounce scenarios, in which stable, null energy condition violating solutions play a central role. We demonstrate how our matching conditions are used in the galilean genesis scenario. In doing so, we extend the previous genesis models and provide a unified description of the theory admitting the solution that starts expanding from the Minkowski spacetime.

  17. Reducing Air-Conditioning System Energy Using a PMV Index

    E-Print Network [OSTI]

    Li, H.; Zhang, Q.

    2006-01-01

    The control system of central air-conditioning, based on PMV, not only improves thermal comfort but also reduces system energy consumption. A new thermal comfort degree softsensor model is built via use of the CMAC neural network nonlinear...

  18. Assessing United States hurricane damage under different environmental conditions

    E-Print Network [OSTI]

    Maheras, Anastasia Francis

    2012-01-01

    Hurricane activity between 1979 and 2011 was studied to determine damage statistics under different environmental conditions. Hurricanes cause billions of dollars of damage every year in the United States, but damage ...

  19. SRNL PHASE II SHELF LIFE STUDIES - SERIES 1 ROOM TEMPERATURE AND HIGH RELATIVE HUMIDITY

    SciTech Connect (OSTI)

    Mickalonis, J.; Duffey, J.

    2012-09-12

    The Savannah River National Laboratory (SRNL) Phase II, Series 1 shelf-life corrosion testing for the Department of Energy Standard 3013 container is presented and discussed in terms of the localized corrosion behavior of Type 304 stainless steel in contact with moist plutonium oxide and chloride salt mixtures and the potential impact to the 3013 inner container. This testing was designed to address the influence of temperature, salt composition, initial salt moisture, residual stress and type of oxide/salt contact on the relative humidity inside a 3013 container and the initiation and propagation of localized corrosion, especially stress corrosion cracking. The integrated plan is being conducted by Los Alamos National Laboratory and SRNL. SRNL is responsible for conducting a corrosion study in small scale vessels containing plutonium oxide and chloride salts under conditions of humidity, temperature and oxide/salt compositions both within the limits of 3013 storage conditions as well as beyond the 3013 storage requirements to identify margins for minimizing the initiation of stress corrosion cracking. These worst case conditions provide data that bound the material packaged in 3013 containers. Phase I of this testing was completed in 2010. The Phase II, Series 1 testing was performed to verify previous results from Phase I testing and extend our understanding about the initiation of stress corrosion cracking and pitting that occur in 304L under conditions of room temperature, high humidity, and a specific plutonium oxide/salt chemistry. These results will aid in bounding the safe storage conditions of plutonium oxides in 3013 containers. A substantial change in the testing was the addition of the capability to monitor relative humidity during test exposure. The results show that under conditions of high initial moisture ({approx}0.5 wt%) and room temperature stress corrosion cracking occurred in 304L teardrop coupons in contact with the oxide/salt mixture at times as short as 85 days. In all cases, the cracking appeared to be associated with pitting or localized general corrosion. Crack initiation at other sites, such as surface imperfections or inclusions, cannot be excluded. Cracks appear in most cases to initiate through an intergranular mode and transition to a transgranular mode.

  20. Evaluation of potential releases from single-shell tanks

    SciTech Connect (OSTI)

    Ramsdell, J.V. Jr.

    1992-03-01

    Potential toxic chemical concentrations in the air near vents of single-shell tanks have been evaluated using three scenarios. The first scenario duplicates the conditions existing the morning of January 28, 1992, when several workers reported exposure to toxic or irritating gases near the BX and BY tank farms in the 200-East Area at Hanford. The results of this scenario indicate that it is unlikely that a tank in either tank farm could have been the source of the gases associated with the incident. In the other two scenarios, maximum potential concentrations under worst-cast and bounding conditions were examined. The results of theses scenario show that air concentrations of all toxic gases reported to be in the tanks fall below their time-weighted average, threshold limiting values within 5 m of tank vents under worst-case conditions involving a restricted air flow to the tanks. When unrestricted air flow to the tanks and worst-case conditions are assumed, the maximum gas concentrations fall below time-weighted average, threshold limiting values within 15 m of vents.

  1. Optimization of Fuel Cell System Operating Conditions for Fuel Cell Vehicles

    E-Print Network [OSTI]

    Zhao, Hengbing; Burke, Andy

    2008-01-01

    Optimization of Fuel Cell System Operating Conditions forOptimization of Fuel Cell System Operating Conditions forOptimization of Fuel Cell System Operating Conditions for

  2. Comparison of Zone Cooling Load for Radiant and All-Air Conditioning Systems

    E-Print Network [OSTI]

    Feng, Jingjuan; Schiavon, Stefano; Bauman, Fred

    2012-01-01

    Load for Radiant and Air Conditioning Systems. ProceedingsRefrigerating and Air Conditioning Engineers Inc. Babiak,of European Heating ahd Air-Conditioning Associations. CEN (

  3. Effects of ambient humidity on the energy use of air conditioning equipment

    E-Print Network [OSTI]

    White, Justin George

    2010-01-01

    Refrigeration, and Air-Conditioning Engi- neers. cz07ventilation, and air conditioning. ksan identifier for theon the Energy Use of Air Conditioning Equipment A Thesis

  4. Thermal comfort in naturally-ventilated and air-conditioned classrooms in the tropics.

    E-Print Network [OSTI]

    Kwok, Alison G

    1997-01-01

    Refrigerating, and Air-Conditioning Engineers, Inc. Elliot,Refrigerating, and Air- Conditioning Engineers, Inc. Nicol,Refrigerating and Air-conditioning Engineers, Inc. ASHRAE.

  5. An Analysis of Price Determination and Markups in the Air-Conditioning and Heating Equipment Industry

    E-Print Network [OSTI]

    2004-01-01

    of Commercial and Residential Air Conditioning and HeatingOF COMMERCIAL AND RESIDENTIAL AIR-CONDITIONING AND HEATINGand residential air-conditioning and heating equipment.

  6. Flood control reservoir operations for conditions of limited storage capacity

    E-Print Network [OSTI]

    Rivera Ramirez, Hector David

    2005-02-17

    -1 FLOOD CONTROL RESERVOIR OPERATIONS FOR CONDITIONS OF LIMITED STORAGE CAPACITY A Dissertation by HECTOR DAVID RIVERA RAMIREZ Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of DOCTOR OF PHILOSOPHY December 2004 Major Subject: Civil Engineering FLOOD CONTROL RESERVOIR OPERATIONS FOR CONDITIONS OF LIMITED STORAGE CAPACITY A Dissertation by HECTOR DAVID RIVERA...

  7. Averaged null energy condition violation in a conformally flat spacetime

    SciTech Connect (OSTI)

    Urban, Douglas; Olum, Ken D.

    2010-01-15

    We show that the averaged null energy condition can be violated by a conformally coupled scalar field in a conformally flat spacetime in 3+1 dimensions. The violation is dependent on the quantum state and can be made as large as desired. It does not arise from the presence of anomalies, although anomalous violations are also possible. Since all geodesics in conformally flat spacetimes are achronal, the achronal averaged null energy condition is likewise violated.

  8. Double-Shell Tank Construction: Extent of Condition

    SciTech Connect (OSTI)

    Venetz, Theodore J.; Gunter, Jason R.

    2014-05-13

    This presentation covers: quick recap of Hanford DSTs and the contribution of construction difficulties which led to the leak in tank AY-102; approach to Extent of Condition reviews; typical DST construction sequence; presentation of construction information resulting from extent of condition reviews of other DST farms with comparison to tank AY-102; and overall conclusion and impact of issues on the other DST tank farms.

  9. The investigation of exhaust powered, automotive air cycle air conditioning

    E-Print Network [OSTI]

    Holley, James Andrew

    1978-01-01

    TEE INVESTIGATION OF EXHAUST POWERED, AUTOMOTIVE AIR CYCLE AIR CONDITIONING A Thesis James Andrew Holley Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... August 1978 Major SubJect: Mechanical Engineering THE INVESTIGATION OF EXHAUST POWERED, AUTOMOTIVE AIR CYCLE AIR CONDITIONING A Thesis hy James Andrew Holley Approved as to style and content by: Chairman of Committee) (Head of Departm nt) Memb e...

  10. Investigation of Various Wind Turbine Drivetrain Condition Monitoring Techniques (Presentation)

    SciTech Connect (OSTI)

    Sheng, S.

    2011-08-01

    This presentation was given at the 2011 Wind Turbine Reliability Workshop sponsored by Sandia National Laboratories in Albuquerque, NM on August 2-3, 2011. It discusses work for the Gearbox Reliability Collaborative including downtime caused by turbine subsystems, annual failure frequency of turbine subsystems, cost benefits of condition monitoring (CM), the Gearbox Reliability Collaborative's condition monitoring approach and rationale, test setup, and results and observations.

  11. Flavor twisted boundary conditions in the Breit frame

    SciTech Connect (OSTI)

    Jiang, F.-J.; Tiburzi, B. C.

    2008-08-01

    We use a generalization of chiral perturbation theory to account for the effects of flavor twisted boundary conditions in the Breit frame. The relevant framework for two light flavors is an SU(6|4) partially quenched theory, where the extra valence quarks differ only by their boundary conditions. Focusing on the pion electromagnetic form factor, finite volume corrections are calculated at next-to-leading order in the chiral expansion and are estimated to be small on current lattices.

  12. Two-Baryon Systems with Twisted Boundary Conditions

    E-Print Network [OSTI]

    Zohreh Davoudi

    2014-11-07

    I derive the most general quantization condition for energy eigenvalues of two interacting baryons in a finite cubic volume when arbitrary twisted boundary conditions are imposed on their finite-volume wavefunctions. These quantization conditions are used, along with experimentally known scattering parameters of two-nucleon systems in the coupled 3S1-3D1 channels, to demonstrate the expected effect of a selection of twisted boundary conditions on the spectrum of the deuteron. It is shown that an order of magnitude reduction in the finite-volume corrections to the deuteron binding energy arise in moderate volumes with a proper choice of boundary conditions on the proton and the neutron, or by averaging the result of periodic and anti-periodic boundary conditions. These observations mean that a sub-percent accuracy can be achieved in the determination of the deuteron binding energy at (spatial) volumes as small as ~(9[fm])^3 in upcoming lattice QCD calculations of this nucleus with physical light-quark masses. The results reviewed in this talk are presented in details in Ref. [1].

  13. CP violation conditions in N-Higgs-doublet potentials

    E-Print Network [OSTI]

    C. C. Nishi

    2007-10-26

    Conditions for CP violation in the scalar potential sector of general N-Higgs-doublet models (NHDMs) are analyzed from a group theoretical perspective. For the simplest two-Higgs-doublet model (2HDM) potential, a minimum set of conditions for explicit and spontaneous CP violation is presented. The conditions can be given a clear geometrical interpretation in terms of quantities in the adjoint representation of the basis transformation group for the two doublets. Such conditions depend on CP-odd pseudoscalar invariants. When the potential is CP invariant, the explicit procedure to reach the real CP-basis and the explicit CP transformation can also be obtained. The procedure to find the real basis and the conditions for CP violation are then extended to general NHDM potentials. The analysis becomes more involved and only a formal procedure to reach the real basis is found. Necessary conditions for CP invariance can still be formulated in terms of group invariants: the CP-odd generalized pseudoscalars. The problem can be completely solved for three Higgs-doublets.

  14. Conditions for diffusion-limited and reaction-limited recombination in nanostructured solar cells

    SciTech Connect (OSTI)

    Ansari-Rad, Mehdi; Department of Physics, University of Shahrood, Shahrood ; Anta, Juan A.; Arzi, Ezatollah

    2014-04-07

    The performance of Dye-sensitized solar cells (DSC) and related devices made of nanostructured semiconductors relies on a good charge separation, which in turn is achieved by favoring charge transport against recombination. Although both processes occur at very different time scales, hence ensuring good charge separation, in certain cases the kinetics of transport and recombination can be connected, either in a direct or an indirect way. In this work, the connection between electron transport and recombination in nanostructured solar cells is studied both theoretically and by Monte Carlo simulation. Calculations using the Multiple-Trapping model and a realistic trap distribution for nanostructured TiO{sub 2} show that for attempt-to-jump frequencies higher than 10{sup 11}10{sup 13} Hz, the system adopts a reaction limited (RL) regime, with a lifetime which is effectively independent from the speed of the electrons in the transport level. For frequencies lower than those, and depending on the concentration of recombination centers in the material, the system enters a diffusion-limited regime (DL), where the lifetime increases if the speed of free electrons decreases. In general, the conditions for RL or DL recombination depend critically on the time scale difference between recombination kinetics and free-electron transport. Hence, if the former is too rapid with respect to the latter, the system is in the DL regime and total thermalization of carriers is not possible. In the opposite situation, a RL regime arises. Numerical data available in the literature, and the behavior of the lifetime with respect to (1) density of recombination centers and (2) probability of recombination at a given center, suggest that a typical DSC in operation stays in the RL regime with complete thermalization, although a transition to the DL regime may occur for electrolytes or hole conductors where recombination is especially rapid or where there is a larger dispersion of energies of electron acceptors.

  15. DESORPTION OF SORBATES FROM MST, MMST, AND CST UNDER VARIOUS CONDITIONS

    SciTech Connect (OSTI)

    Taylor-Pashow, K.; Hobbs, D.

    2011-06-10

    The Small Column Ion Exchange (SCIX) Program (formerly referred to as the Modular Salt Processing (MSP) Project) seeks to deploy equipment to remove the {sup 134,137}Cs, {sup 90}Sr, and alpha-emitting radionuclides (principally {sup 238,239,240}Pu and {sup 237}Np) from the high level waste salt solutions. The equipment is installed within a high level waste tank to take advantage of the shielding provided by the waste tank. The process will involve adding monosodium titanate (MST) to the waste tank (i.e., Tank 41H) to sorb the Sr and select actinides, removing the MST and entrained sludge with in-riser rotary microfilters, and subsequently using ion-exchange columns containing crystalline silicotitanate (CST) to remove the Cs. After being loaded with Cs, the CST will be ground to reduce the particle size and then transferred into another waste tank (e.g., Tank 40H). The MST and sludge solids stream will be transported to a sludge batch preparation tank (i.e., Tank 42H or Tank 51H) once the SCIX batch is processed. Both streams, MST/solids and CST, will ultimately be transported into and vitrified inside the Defense Waste Processing Facility (DWPF). A series of experiments were performed to examine desorption from monosodium titanate (MST), modified monosodium titanate (mMST), and crystalline silicotitanate (CST) under various conditions. The first two experiments examined desorption from MST and CST under two different sludge treatment processes, aluminum dissolution and sludge washing. Desorption of all sorbates was observed to varying degrees under the aluminum dissolution conditions. The extent of desorption ranged from < 3% to about 50% after 4 weeks, with Pu exhibiting the lowest desorption. At the end of the experiment, the temperature was reduced from 65 C to 25 C and the tests monitored for an additional two weeks. After reducing the temperature, partial resorption of the sorbates was observed with both MST and CST. Under the sludge washing conditions, no desorption of sorbates was observed with MST; however, some additional sorption did occur. For CST, a small amount of Cs leached from the material during the first day of testing, but no further leaching was observed over the remaining test period. The final test was designed to examine the possibility of desorption from both MST and mMST upon increasing the solid to liquid phase ratio. The results of these tests indicated some desorption of Pu from MST within the first two weeks after changing the phase ratio, then resorption of some of the leached Pu over the remaining 4 weeks of the experiment. No desorption of any sorbates was observed for mMST under these conditions.

  16. Issues and Factors of Train Air-conditioning System Design and Operation

    E-Print Network [OSTI]

    Liu, P.; Li, D.

    2006-01-01

    -conditioning. Modifications to the air-conditioning system and some advanced air conditioning systems are introduced, which are helpful for system optimization. In this paper, based on analysis of the characteristics of the air - conditioning system in foreign high speed...

  17. Site-specific variability in BTEX biodegradation under denitrifying conditions

    SciTech Connect (OSTI)

    Kao, C.M. [Geophex, Ltd., Raleigh, NC (United States); Borden, R.C. [North Carolina State Univ., Raleigh, NC (United States). Dept. of Civil Engineering

    1997-03-01

    Laboratory microcosm experiments were conducted to evaluate the feasibility of benzene, toluene, ethylbenzene, m-xylene, and o-xylene (BTEX) biodegradation under denitrifying conditions. Nine different sources of inocula, including contaminated and uncontaminated soil cores from four different sites and activated sludge, were used to establish microcosms. BTEX was not degraded under denitrifying conditions in microcosms inoculated with aquifer material from Rocky Point and Traverse City. However, rapid depletion of glucose under denitrifying conditions was observed in microcosms containing Rocky Point aquifer material. TEX degradation was observed in microcosms containing Rocky Point aquifer material. TEX degradation was observed in microcosms containing aquifer material from Fort Bragg and Sleeping Bear Dunes and sewage sludge. Benzene was recalcitrant in all microcosms tested. The degradation of o-xylene ceased after toluene, ethylbenzene, and m-xylene were depleted in the Fort Bragg and sludge microcosms, but o-xylene continued to degrade in microcosms with contaminated Sleeping Bear Dunes soil. The most probable number (MPN) of denitrifiers in these nine different inocula were measured using a microtiter technique. There was no correlation between the MPN of denitrifiers and the TEX degradation rate under denitrifying conditions. Experimental results indicate that the degradation sequence and TEX degradation rate under denitrifying conditions may differ among sites. Results also indicate that denitrification alone may not be a suitable bioremediation technology for gasoline-contaminated aquifers because of the inability of denitrifiers to degrade benzene.

  18. An Integral Condition for Core-Collapse Supernova Explosions

    E-Print Network [OSTI]

    Murphy, Jeremiah W

    2015-01-01

    We derive an integral condition for core-collapse supernova explosions and use it to construct a new diagnostic of explodability. The fundamental challenge in core-collapse supernova theory is to explain how a stalled accretion shock revives to explode a star. In this manuscript, we assume that shock revival is initiated by the delayed-neutrino mechanism and derive an integral condition for shock expansion, $v_s > 0$. Assuming that $v_s > 0$ corresponds to explosion, we recast this integral condition as a dimensionless condition for explosion, $\\Psi > 0$. Using 1D simulations, we confirm that $\\Psi = 0$ during the stalled phase and $\\Psi > 0$ during explosion. Having validated the integral condition, we use it to derive a useful explosion diagnostic. First, for a given set of parameters, we find the family of solutions to the steady-state equations, parameterized by shock radius $R_s$, yielding $\\Psi(R_s)$. For any particular solution, $\\Psi(R_s)$ may be negative, zero, or positive, and, since $\\Psi \\propto v...

  19. Experimental study of elliptical jet from sub to supercritical conditions

    SciTech Connect (OSTI)

    Muthukumaran, C. K.; Vaidyanathan, Aravind

    2014-04-15

    The jet mixing at supercritical conditions involves fluid dynamics as well as thermodynamic phenomena. All the jet mixing studies at critical conditions to the present date have focused only on axisymmetric jets. When the liquid jet is injected into supercritical environment, the thermodynamic transition could be well understood by considering one of the important fluid properties such as surface tension since it decides the existence of distinct boundary between the liquid and gaseous phase. It is well known that an elliptical liquid jet undergoes axis-switching phenomena under atmospheric conditions due to the presence of surface tension. The experimental investigations were carried out with low speed elliptical jet under supercritical condition. Investigation of the binary component system with fluoroketone jet and N{sub 2} gas as environment shows that the surface tension force dominates for a large downstream distance, indicating delayed thermodynamic transition. The increase in pressure to critical state at supercritical temperature is found to expedite the thermodynamic transition. The ligament like structures has been observed rather than droplets for supercritical pressures. However, for the single component system with fluoroketone jet and fluoroketone environment shows that the jet disintegrates into droplets as it is subjected to the chamber conditions even for the subcritical pressures and no axis switching phenomenon is observed. For a single component system, as the pressure is increased to critical state, the liquid jet exhibits gas-gas like mixing behavior and that too without exhibiting axis-switching behavior.

  20. Advanced Development and Market Penetration of Desiccant-Based Air-Conditioning Systems

    SciTech Connect (OSTI)

    Vineyard, E A; Sand, J R; Linkous, R L; Baskin, E; Mason, D

    1998-01-01

    Desiccant Air Conditioning Systems can be used as alternatives for conventional air conditioning equipment in any commercial or residential building.

  1. Test Report for Perforated Metal Air Transportable Package (PMATO) Prototype.

    SciTech Connect (OSTI)

    Bobbe, Jeffery G.; Pierce, Jim Dwight

    2003-06-01

    A prototype design for a plutonium air transport package capable of carrying 7.6 kg of plutonium oxide and surviving a ''worst-case'' plane crash has been developed by Sandia National Laboratories (SNL) for the Japan Nuclear Cycle Development Institute (JNC). A series of impact tests were conducted on half-scale models of this design for side, end, and comer orientations at speeds close to 282 m/s onto a target designed to simulate weathered sandstone. These tests were designed to evaluate the performance of the overpack concept and impact-limiting materials in critical impact orientations. The impact tests of the Perforated Metal Air Transportable Package (PMATP) prototypes were performed at SNL's 10,000-ft rocket sled track. This report describes test facilities calibration and environmental testing methods of the PMATP under specific test conditions. The tests were conducted according to the test plan and procedures that were written by the authors and approved by SNL management and quality assurance personnel. The result of these tests was that the half-scale PMATP survived the ''worst-case'' airplane crash conditions, and indicated that a full-scale PMATP, utilizing this overpack concept and these impact-limiting materials, would also survive these crash conditions.

  2. Effective velocity boundary condition at a mixed slip surface

    E-Print Network [OSTI]

    Sbragaglia, M

    2006-01-01

    This paper studies the nature of the effective velocity boundary conditions for liquid flow over a plane boundary on which small free-slip islands are randomly distributed. It is found that, to lowest order in the area fraction $\\beta$ covered by free-slip regions with characteristic size $a$, a macroscopic Navier-type slip condition emerges with a slip length of the order of $a\\beta$. The study is motivated by recent experiments which suggest that gas nano-bubbles may form on solid walls and may be responsible for the appearance of a partial slip boundary conditions for liquid flow. The results are also relevant for ultra-hydrophobic surfaces exploiting the so-called ``lotus effect''.

  3. Arrival condition of spent fuel after storage, handling, and transportation

    SciTech Connect (OSTI)

    Bailey, W.J.; Pankaskie, P.J.; Langstaff, D.C.; Gilbert, E.R.; Rising, K.H.; Schreiber, R.E.

    1982-11-01

    This report presents the results of a study conducted to determine the probable arrival condition of spent light-water reactor (LWR) fuel after handling and interim storage in spent fuel storage pools and subsequent handling and accident-free transport operations under normal or slightly abnormal conditions. The objective of this study was to provide information on the expected condition of spent LWR fuel upon arrival at interim storage or fuel reprocessing facilities or at disposal facilities if the fuel is declared a waste. Results of a literature survey and data evaluation effort are discussed. Preliminary threshold limits for storing, handling, and transporting unconsolidated spent LWR fuel are presented. The difficulty in trying to anticipate the amount of corrosion products (crud) that may be on spent fuel in future shipments is also discussed, and potential areas for future work are listed. 95 references, 3 figures, 17 tables.

  4. USING CONDITION MONITORING TO PREDICT REMAINING LIFE OF ELECTRIC CABLES.

    SciTech Connect (OSTI)

    LOFARO,R.; SOO,P.; VILLARAN,M.; GROVE,E.

    2001-03-29

    Electric cables are passive components used extensively throughout nuclear power stations to perform numerous safety and non-safety functions. It is known that the polymers commonly used to insulate the conductors on these cables can degrade with time; the rate of degradation being dependent on the severity of the conditions in which the cables operate. Cables do not receive routine maintenance and, since it can be very costly, they are not replaced on a regular basis. Therefore, to ensure their continued functional performance, it would be beneficial if condition monitoring techniques could be used to estimate the remaining useful life of these components. A great deal of research has been performed on various condition monitoring techniques for use on electric cables. In a research program sponsored by the U.S. Nuclear Regulatory Commission, several promising techniques were evaluated and found to provide trendable information on the condition of low-voltage electric cables. These techniques may be useful for predicting remaining life if well defined limiting values for the aging properties being measured can be determined. However, each technique has advantages and limitations that must be addressed in order to use it effectively, and the necessary limiting values are not always easy to obtain. This paper discusses how condition monitoring measurements can be used to predict the remaining useful life of electric cables. The attributes of an appropriate condition monitoring technique are presented, and the process to be used in estimating the remaining useful life of a cable is discussed along with the difficulties that must be addressed.

  5. Nearest Neighbor Conditional Estimation for Harris Recurrent Markov Chains

    E-Print Network [OSTI]

    Sancetta, Alessio

    would refer to the first entry in Xn, as all the other entries are past values for the original model. Hence, the conditional u quantile of Xn is given by Q (u|x) := inf s?R {Pr (Xn ? s|Xn?1 = x) > u} . To apply the results of the previous subsections... on some manifold in E. Example 36 Suppose that for some function R : E ? R Pr (Xi ? s|Xi?1 = x) = Pr (Xi ? s|R (Xi?1) = R (x)) , then we can substitute the E valued conditioning value x with the R valued R (x). There is a clear advantage if E = RK and K...

  6. Engineered microorganisms capable of producing target compounds under anaerobic conditions

    DOE Patents [OSTI]

    Buelter, Thomas (Denver, CO); Meinhold, Peter (Denver, CO); Feldman, Reid M. Renny (San Francisco, CA); Hawkins, Andrew C. (Parker, CO); Urano, Jun (Irvine, CA); Bastian, Sabine (Pasadena, CA); Arnold, Frances (La Canada, CA)

    2012-01-17

    The present invention is generally provides recombinant microorganisms comprising engineered metabolic pathways capable of producing C3-C5 alcohols under aerobic and anaerobic conditions. The invention further provides ketol-acid reductoisomerase enzymes which have been mutated or modified to increase their NADH-dependent activity or to switch the cofactor preference from NADPH to NADH and are expressed in the modified microorganisms. In addition, the invention provides isobutyraldehyde dehydrogenase enzymes expressed in modified microorganisms. Also provided are methods of producing beneficial metabolites under aerobic and anaerobic conditions by contacting a suitable substrate with the modified microorganisms of the present invention.

  7. Thermal conditions and functional requirements for molten fuel containment

    SciTech Connect (OSTI)

    Kang, C.S.; Torri, A.

    1980-05-01

    This paper discusses the configuration and functional requirements for the molten fuel containment system (MFCS) in the GCFR demonstration plant design. Meltdown conditions following a loss of shutdown cooling (LOSC) accident were studied to define the core debris volume for a realistic meltdown case. Materials and thicknesses of the molten fuel container were defined. Stainless steel was chosen as the sacrificial material and magnesium oxide was chosen as the crucible material. Thermal conditions for an expected quasi-steady state were analyzed. Highlights of the functional requirements which directly affect the MFCS design are discussed.

  8. MTBreg: The Database of Conditionally Regulated Proteins in Mycobacterium Tuberculosis

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

    Kaufman, Markus; Pal, Debnath; Eisenberg, David

    Proteins up- and down- regulated in Mycobacterium tuberculosis grown under conditions mimicking infection are included in this database. It also includes information on proteins that are regulated by selected transcription factors or other regulatory proteins. The literature data provided here is complimentary to the databases provided by Michael Strong that include recent TB computational functional linkages and the Prolinks Database by Peter Bowers. The experimental condition, the experimental dataset and a literature reference will be displayed, including links to the computationally linked proteins in the Prolinks Database and the entry in the Mycobacterium tuberculosis Structural Genomics Database.[Copied from information at http://www.doe-mbi.ucla.edu/Services/MTBreg/

  9. System and method of vehicle operating condition management

    DOE Patents [OSTI]

    Sujan, Vivek A.; Vajapeyazula, Phani; Follen, Kenneth; Wu, An; Moffett, Barty L.

    2015-10-20

    A vehicle operating condition profile can be determined over a given route while also considering imposed constraints such as deviation from time targets, deviation from maximum governed speed limits, etc. Given current vehicle speed, engine state and transmission state, the present disclosure optimally manages the engine map and transmission to provide a recommended vehicle operating condition that optimizes fuel consumption in transitioning from one vehicle state to a target state. Exemplary embodiments provide for offline and online optimizations relative to fuel consumption. The benefit is increased freight efficiency in transporting cargo from source to destination by minimizing fuel consumption and maintaining drivability.

  10. Power losses in electrical networks depending on weather conditions

    SciTech Connect (OSTI)

    Zhelezko, Yu. S.; Kostyushko, V. A.; Krylov, S. V.; Nikiforov, E. P.; Savchenko, O. V.; Timashova, L. V.; Solomonik, E. A. [Electric Power Research Institute (VNIIE) (Russian Federation)

    2005-01-15

    Specific power losses to corona and to leakage currents over overhead insulators are presented for 110 - 750-kV transmission lines with different phase design and pole types for different weather conditions. Consumption of electric energy for ice melting on conductors of various cross sections is evaluated. Meteorological data of 1372 weather stations in Russia are processed for a period of 10 years. The territory of the country is divided into 7 regions with approximately homogeneous weather conditions. Specific power losses to corona and leakage currents over overhead insulators are presented for every region.

  11. Chemical and isotopic kinetics of sulfate reduction by organic matter under hydrothermal conditions

    SciTech Connect (OSTI)

    Kaiser, C.J.

    1988-01-01

    This study investigated the feasibility of nonbacterial sulfate reduction by organic matter in geologic environments. Sulfate is reduced by dextrose under acidic conditions at temperatures of 230-270 C. Reaction products include sulfide and organic-sulfur compounds; sulfite, thiosulfate and elemental sulfur were not detected. The rate law for the initial one- or two-electron reduction of sulfate at 250C is first-order in bisulfate and about one-half-order in initial dextrose concentration, and shows a very strong dependence on pH. The kinetics of sulfate reduction by fructose at 250C are virtually the same. The lack of sulfate reduction by formaldehyde, methanol, ethanol and acetic acid at 250 C indicates that the reducing power of dextrose and fructose cannot be attributed to carbonyl, carboxyl or hydroxyl functional groups. The form of the rate law for sulfate reduction by dextrose and the presence of an induction period rather suggest that the initial reduction of sulfate occurs with free radicals derived from the thermal decomposition of the hexoses or their alteration products. The inferred sulfate-reduction reaction mechanism suggest that aqueous sulfate may be reduced to sulfide in geologic environments such as deep sedimentary basins. The observed acid-catalysis of the reaction in the laboratory may be supplanted by clay-mineral catalysis in geologic environments. Sulfur isotopes are fractionated during the reduction of sulfate by dextrose under hydrothermal conditions. Computer simulations of the isotopic evolution of the experiments suggest that sulfate-sulfide isotopic exchange largely controls the isotopic composition of sulfate and sulfide. The extent of isotopic fractionation due solely to sulfate reduction thus cannot be determined from the experiments

  12. Near-surface meteorological conditions associated with active resuspension of dust by wind erosion

    SciTech Connect (OSTI)

    Hodgin, C.R.

    1982-01-01

    The meteorological conditions associated with extreme winds in the lee of the Colorado Rocky Mountains were studied from the viewpoint of dust resuspension and dispersion. Wind, dispersion, temperature, and dew point conditions occurring near the surface were discussed in detail for a selected event. Near-surface wind speeds were compared to observations made at a standard sampling height. These field data were developed to aid in validation and interpretation of wind tunnel observations and application of dispersion models to wind erosion resuspension. Three conclusions can immediately be drawn from this investigation. First, wind storms in nature are quite gusty, with gusts exceeding the mean speed by 50 percent or more. However, wind direction variations are small by comparison. Thus, wind tunnel studies should be able to simulate the large along-flow turbulence, while keeping cross-flow turbulence to a moderate level. This also has an application to the puff modeling of high winds. Puff models normally assume that the along-flow dispersion coefficient is equal to the cross-flow value. This study suggests that the along-flow coefficient should be much larger than its cross-flow counterpart. Another conclusion involves the usual assumption of Pasquill-Gifford stability class D. In the event studied here, the atmosphere was well mixed with near-neutral thermal stability, yet the horizontal dispersion stability class varied from G to A. Thus, an assumption of Class D horizontal dispersion during high winds would not have been valid during this case. A final conclusion involves the widely applied assumption of a logarithmic wind speed profile during high wind events. This study has indicated that such an assumption is appropriate.

  13. Influence of microorganisms on the oxidation state distribution of multivalent actinides under anoxic conditions

    SciTech Connect (OSTI)

    Reed, Donald Timothy [Los Alamos National Laboratory; Borkowski, Marian [Los Alamos National Laboratory; Lucchini, Jean - Francois [Los Alamos National Laboratory; Ams, David [Los Alamos National Laboratory; Richmann, M. K. [Los Alamos National Laboratory; Khaing, H. [Los Alamos National Laboratory; Swanson, J. S. [Los Alamos National Laboratory

    2010-12-10

    The fate and potential mobility of multivalent actinides in the subsurface is receiving increased attention as the DOE looks to cleanup the many legacy nuclear waste sites and associated subsurface contamination. Plutonium, uranium and neptunium are the near-surface multivalent contaminants of concern and are also key contaminants for the deep geologic disposal of nuclear waste. Their mobility is highly dependent on their redox distribution at their contamination source as well as along their potential migration pathways. This redox distribution is often controlled, especially in the near-surface where organic/inorganic contaminants often coexist, by the direct and indirect effects of microbial activity. Under anoxic conditions, indirect and direct bioreduction mechanisms exist that promote the prevalence of lower-valent species for multivalent actinides. Oxidation-state-specific biosorption is also an important consideration for long-term migration and can influence oxidation state distribution. Results of ongoing studies to explore and establish the oxidation-state specific interactions of soil bacteria (metal reducers and sulfate reducers) as well as halo-tolerant bacteria and Archaea for uranium, neptunium and plutonium will be presented. Enzymatic reduction is a key process in the bioreduction of plutonium and uranium, but co-enzymatic processes predominate in neptunium systems. Strong sorptive interactions can occur for most actinide oxidation states but are likely a factor in the stabilization of lower-valent species when more than one oxidation state can persist under anaerobic microbiologically-active conditions. These results for microbiologically active systems are interpreted in the context of their overall importance in defining the potential migration of multivalent actinides in the subsurface.

  14. Investigation of Techniques to Improve Continuous Air Monitors Under Conditions of High Dust Loading in Environmental Settings

    SciTech Connect (OSTI)

    Suilou Huang; Stephen D. Schery; John C. Rodgers

    2002-07-23

    A number of DOE facilities, such as the Los Alamos National Laboratory (LANL) and the Waste Isolation Pilot Plant (WIPP), use alpha-particle environmental continuous air monitors (ECAMs) to monitor air for unwanted releases of radioactive aerosols containing such materials as plutonium and uranium. High sensitivity, ease of operation, and lack of false alarms are all important for ECAMs. The object of the project was to conduct investigations to improve operation of ECAMs, particularly under conditions where a lot of nonradioactive dust may be deposited on the filters (conditions of high dust loading). The presence of such dust may increase the frequency with which filters must be changed and can lead to an increased incidence of false alarms due to deteriorated energy resolution and response specificity to the radionuclides of interest. A major finding of the investigation, not previously documented, was that under many conditions thick layers of underlying nonradioactive dust do not decrease energy resolution and specificity for target radionuclides if the radioactive aerosol arrives as a sudden thin burst deposit, as commonly occurs in the early-warning alarm mode. As a result, operators of ECAMs may not need to change filters as often as previously thought and have data upon which to base more reliable operating procedures.

  15. Diagnose Physical Conditions Near the Flare Energy-release Sites from Observations of Solar Microwave Type III Bursts

    E-Print Network [OSTI]

    Tan, Baolin; Meszarosova, Hana; Huang, Guangli

    2015-01-01

    In the physics of solar flares, it is crucial to diagnose the physical conditions near the flare energy-release sites. However, so far it is unclear how do diagnose these physical conditions. Solar microwave type III burst is believed to be a sensitive signature of the primary energy release and electron accelerations in solar flares. This work takes into account the effect of magnetic field on the plasma density and developed s set of formulas which can be used to estimate the plasma density, temperature, magnetic field near the magnetic reconnection site and particle acceleration region, and the velocity and energy of electron beams. We applied these formulas to three groups of microwave type III pairs in a X-class flare, and obtained some reasonable and interesting results. This method can be applied to other microwave type III bursts to diagnose the physical conditions of source regions, and provide some basic information to understand the intrinsic nature and fundamental processes occurring near the flar...

  16. Visualization of Fuel Cell Water Transport and Performance Characterization under Freezing Conditions

    SciTech Connect (OSTI)

    Kandlikar, S.G.; Lu, Z.; Rao, N.; Sergi, J.; Rath, C.; Dade, C.; Trabold, T.; Owejan, J.; Gagliardo, J.; Allen, J.; Yassar, R.S.; Medici, E.; Herescu, A.

    2010-05-30

    In this program, Rochester Institute of Technology (RIT), General Motors (GM) and Michigan Technological University (MTU) have focused on fundamental studies that address water transport, accumulation and mitigation processes in the gas diffusion layer and flow field channels of the bipolar plate. These studies have been conducted with a particular emphasis on understanding the key transport phenomena which control fuel cell operation under freezing conditions. Technical accomplishments are listed below: Demonstrated that shutdown air purge is controlled predominantly by the water carrying capacity of the purge stream and the most practical means of reducing the purge time and energy is to reduce the volume of liquid water present in the fuel cell at shutdown. The GDL thermal conductivity has been identified as an important parameter to dictate water accumulation within a GDL. Found that under the normal shutdown conditions most of the GDL-level water accumulation occurs on the anode side and that the mass transport resistance of the membrane electrode assembly (MEA) thus plays a critically important role in understanding and optimizing purge. Identified two-phase flow patterns (slug, film and mist flow) in flow field channel, established the features of each pattern, and created a flow pattern map to characterize the two-phase flow in GDL/channel combination. Implemented changes to the baseline channel surface energy and GDL materials and evaluated their performance with the ex situ multi-channel experiments. It was found that the hydrophilic channel (contact angle ? ? 10?) facilitates the removal of liquid water by capillary effects and by reducing water accumulation at the channel exit. It was also found that GDL without MPL promotes film flow and shifts the slug-to-film flow transition to lower air flow rates, compared with the case of GDL with MPL. Identified a new mechanism of water transport through GDLs based on Haines jump mechanism. The breakdown and redevelopment of the water paths in GDLs lead to an intermittent water drainage behavior, which is characterized by dynamic capillary pressure and changing of breakthrough location. MPL was found to not only limit the number of water entry locations into the GDL (thus drastically reducing water saturation), but also stabilizes the water paths (or morphology). Simultaneously visualized the water transport on cathode and anode channels of an operating fuel cell. It was found that under relatively dry hydrogen/air conditions at lower temperatures, the cathode channels display a similar flow pattern map to the ex-situ experiments under similar conditions. Liquid water on the anode side is more likely formed via condensation of water vapor which is transported through the anode GDL. Investigated the water percolation through the GDL with pseudo-Hele-Shaw experiments and simulated the capillary-driven two-phase flow inside gas diffusion media, with the pore size distributions being modeled by using Weibull distribution functions. The effect of the inclusion of the microporous layer in the fuel cell assembly was explored numerically. Developed and validated a simple, reliable computational tool for predicting liquid water transport in GDLs. Developed a new method of determining the pore size distribution in GDL using scanning electron microscope (SEM) image processing, which allows for separate characterization of GDL wetting properties and pore size distribution. Determined the effect of surface wettability and channel cross section and bend dihedral on liquid holdup in fuel cell flow channels. A major thrust of this research program has been the development of an optimal combination of materials, design features and cell operating conditions that achieve a water management strategy which facilitates fuel cell operation under freezing conditions. Based on our various findings, we have made the final recommendation relative to GDL materials, bipolar design and surface properties, and the combination of materials, design featur

  17. Complex chaos in the conditional dynamics of qubits

    SciTech Connect (OSTI)

    Kiss, T. [Research Institute for Solid State Physics and Optics, P. O. Box 49, H-1525 Budapest (Hungary); Jex, I.; Vymetal, S. [Department of Physics, FJFI CVUT, Brehova 7, 115 19 Prague 1-Stare Mesto (Czech Republic); Alber, G. [Institut fuer Angewandte Physik, Technische Universitaet Darmstadt, D-64289 Darmstadt (Germany)

    2006-10-15

    We analyze the consequences of iterative measurement-induced nonlinearity on the dynamical behavior of qubits. We present a one-qubit scheme where the equation governing the time evolution is a complex-valued nonlinear map with one complex parameter. In contrast to the usual notion of quantum chaos, exponential sensitivity to the initial state occurs here. We calculate analytically the Lyapunov exponent based on the overlap of quantum states, and find that it is positive. We present a few illustrative examples of the emerging dynamics.

  18. Gas Powered Air Conditioning Absorption vs. Engine-Drive

    E-Print Network [OSTI]

    Phillips, J. N.

    1996-01-01

    not a new technology at the time, neither was the gas engine. But now in the 19901s, gas engine-drive (GED) chillers have "hit" the air conditioning market with a "bang". In the Lone Star Gas Company area in 1995, GED chillers are now being considered...

  19. Reuse of Verification Results Conditional Model Checking, Precision Reuse,

    E-Print Network [OSTI]

    Beyer, Dirk

    further verification runs of the system; information about the level of abstraction in the abstract modelReuse of Verification Results Conditional Model Checking, Precision Reuse, and Verification checker which parts of the system should be verified; thus, later verification runs can use the output

  20. CHARACTERIZATION OF SURFACE ROUGHNESS AND INITIAL CONDITIONS FOR CYLINDRICAL HYDRODYNAMIC

    E-Print Network [OSTI]

    Barnes, Cris W.

    CHARACTERIZATION OF SURFACE ROUGHNESS AND INITIAL CONDITIONS FOR CYLINDRICAL HYDRODYNAMIC AND MIX across a variable density interface, that interface must be well characterized. There exist a number, characterizing, and affecting the surface roughness was driven by Ablative Rayleigh-Taylor work5

  1. CONTEXTUALLY ADAPTIVE SIGNAL REPRESENTATION USING CONDITIONAL PRINCIPAL COMPONENT ANALYSIS

    E-Print Network [OSTI]

    Rajashekar, Umesh

    is the construction of bases that are adapted to individual signal in- stances. Here we develop a new framework. Index Terms-- Adaptive basis, conditional PCA, self-similarities, image modeling, image representation traditional methods, primarily due to the cost of encoding the indices of selected basis elements

  2. UNSUPERVISED CONDITION CHANGE DETECTION IN LARGE DIESEL ENGINES

    E-Print Network [OSTI]

    UNSUPERVISED CONDITION CHANGE DETECTION IN LARGE DIESEL ENGINES Niels Henrik Pontoppidan and Jan detection in large diesel engines from acoustical emis- sion sensor signal and compared to more classical diesel engines and stationary power plants. The possibility of early detecting small defects prior

  3. Backward Error and Condition of Polynomial Eigenvalue Problems \\Lambda

    E-Print Network [OSTI]

    Higham, Nicholas J.

    , 1999 Abstract We develop normwise backward errors and condition numbers for the polyno­ mial eigenvalue Research Council grant GR/L76532. 1 #12; where A l 2 C n\\Thetan , l = 0: m and we refer to P as a ??­matrix. Few direct numerical methods are available for solving the polynomial eigenvalue problem (PEP). When m

  4. THE TCS UPGRADE: DESIGN, CONSTRUCTION, CONDITIONING, AND ENHANCED RMF FRC

    E-Print Network [OSTI]

    Washington at Seattle, University of

    , with relatively low ~by FRC standards! megawatt-level RMF input powers. After initial forma- tion, the plasmaTHE TCS UPGRADE: DESIGN, CONSTRUCTION, CONDITIONING, AND ENHANCED RMF FRC PERFORMANCE K. E. MILLER. MILROY, Z. A. PIETRZYK, and G. C. VLASSES University of Washington Redmond Plasma Physics Laboratory

  5. Model-based Enhancement of Lighting Conditions in Image Sequences

    E-Print Network [OSTI]

    Girod, Bernd

    Model-based Enhancement of Lighting Conditions in Image Sequences Peter Eisert and Bernd Girod model-based technique for estimating and manipulating the lighting in an image sequence. The current scene lighting is estimated for each frame exploiting 3-D model information and by synthetic re-lighting

  6. Ring current formation influenced by solar wind substorm conditions

    E-Print Network [OSTI]

    Winglee, Robert M.

    Click Here for Full Article Ring current formation influenced by solar wind substorm conditions M outflows during an internally driven substorm. We show that the energization of the ions is not correlated with the time that the ions leave the ionosphere; instead energization is correlated with the formation

  7. Conjunctive Selection Conditions in Main Memory Kenneth A. Ross

    E-Print Network [OSTI]

    Ross, Kenneth A.

    Conjunctive Selection Conditions in Main Memory Kenneth A. Ross Columbia University kar of records. With large main memories available cheaply, systems may choose to keep the data entirely in main in main memory needs to take into account the architectural characteristics of modern processors, just

  8. Necessary and Sufficient Conditions for Differentiating Under the Integral Sign

    E-Print Network [OSTI]

    Talvila, Erik

    Necessary and Sufficient Conditions for Differentiating Under the Integral Sign Erik Talvila 1. INTRODUCTION. When we have an integral that depends on a parameter, say F(x) = b a f (x, y) dy, it is often-test and Lebesgue Dominated Convergence). If we use the Henstock integral, then it is not difficult to give

  9. DECAY HEAT CONDITIONS OF CURRENT AND NEXT GENERATION REACTORS

    E-Print Network [OSTI]

    Choe, JongSoo 1985-

    2012-05-04

    the accident in Japan last year. Thus, decay heat must be considered in reactor design for safety. The research focused on decay heat conditions of current and next generation reactors. US-APWR, ABWR, VHTR, and ABR were modeled and simulated using the program...

  10. UNCORRECTED 2 Multiscale boundary conditions in crystalline solids

    E-Print Network [OSTI]

    Qian, Dong

    UNCORRECTED PROOF 1 2 Multiscale boundary conditions in crystalline solids: 3 Theory scale simulations of crystalline solids. Based on Fourier analysis of regular lattices structures with a crystalline gold substrate. Complete atomistic resolution on the coarse grain is alternatively 19 employed

  11. "Table HC11.6 Air Conditioning Characteristics by Northeast...

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

    "Air-Conditioning Equipment1, 2 " "Central System",65.9,6,5.2,0.8 "Without a Heat Pump",53.5,5.5,4.8,0.7 "With a Heat Pump",12.3,0.5,0.4,"Q" "WindowWall...

  12. Segmentation Conditional Random Fields (SCRFs): A New Approach for

    E-Print Network [OSTI]

    Carbonell, Jaime

    Segmentation Conditional Random Fields (SCRFs): A New Approach for Protein Fold Recognition Yan Liu, University of Pittsburgh, PA, USA vanathi@cbmi.pitt.edu Abstract. Protein fold recognition is an important.e. the supersecondary structures or protein folds. There has been significant work on predicting some well-defined types

  13. RHEOLOGICAL STUDY OF AN HYDRATE SLURRY FOR AIR CONDITIONNING APPLICATION

    E-Print Network [OSTI]

    Boyer, Edmond

    Saint-Etienne France ABSTRACT Under atmospheric pressure condition and temperatures between 0C and +12 behaviour. The experimental device is made up of a brushed surface heat exchanger in which the hydrates flow rates and pressure drops measurements. We obtain flow curves of hydrates slurries depending

  14. Spent sealed radium sources conditioning in Latin America

    SciTech Connect (OSTI)

    Mourao, R.P. [Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Minas Gerais (Brazil)] [Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Minas Gerais (Brazil)

    1999-06-01

    The management of spent sealed sources is considered by the International Atomic Energy Agency (IAEA) one of the greatest challenges faced by nuclear authorities today, especially in developing countries. One of the Agency`s initiatives to tackle this problem is the Spent Radium Sources Conditioning Project, a worldwide project relying on the regional co-operation between countries. A team from the Brazilian nuclear research institute Centro de Desenvolvimento da Tecnologia Nuclear (CDTN) was chosen as the expert team to carry out the operations in Latin America; since December 1996 radium sources have been safely conditioned in Uruguay, Nicaragua, Guatemala, Ecuador and Paraguay. A Quality Assurance Program was established, encompassing the qualification of the capsule welding process, written operational procedures referring to all major steps of the operation, calibration of monitors and information retrievability. A 200L carbon steel drum-based packaging concept was used to condition the sources, its cavity being designed to receive the lead shield device containing stainless steel capsules with the radium sources. As a result of these operations, a total amount of 2,897 mg of needles, tubes, medical applicators, standard sources for calibration, lightning rods, secondary wastes and contaminated objects were stored in proper conditions and are now under control of the nuclear authorities of the visited countries.

  15. Distributed Compression for Condition Monitoring of Wind Farms

    E-Print Network [OSTI]

    Cheng, Samuel

    1 Distributed Compression for Condition Monitoring of Wind Farms Vladimir Stankovic, Lina Stankovic, Shuang Wang, and Samuel Cheng Abstract--A good understanding of individual and collective wind farm operation is necessary for improving the overall performance of the wind farm `grid', as well as estimating

  16. RADIO PROCEDURES DURING NORMAL OPERATING CONDITIONS CALLING AND COMMUNICATING TECHNIQUES

    E-Print Network [OSTI]

    Brody, James P.

    RADIO PROCEDURES DURING NORMAL OPERATING CONDITIONS CALLING AND COMMUNICATING TECHNIQUES The secret are going to say. Many people with radios have a tendency to talk and/or repeat too much. Say what you need until it is second nature. Practicing proper day-to-day radio procedures will make emergency radio

  17. Acetone Photophysics at ear Critical to Supercritical Conditions

    E-Print Network [OSTI]

    Seitzman, Jerry M.

    from liquid to gas. Rather, the fuel behaves as a single homogeneous supercritical fluid that exhibits the physical and chemical interactions of the fluid, e.g., jet breakup and eventual mixing of fuel and oxidizer conditions with 266 nm excitation, motivated by an interest in using acetone to study transcritical fuel

  18. Wind Turbine Gearbox Oil Filtration and Condition Monitoring

    SciTech Connect (OSTI)

    Sheng, Shuangwen

    2015-10-25

    This is an invited presentation for a pre-conference workshop, titled advances and opportunities in lubrication: wind turbine, at the 2015 Society of Tribologists and Lubrication Engineers (STLE) Tribology Frontiers Conference held in Denver, CO. It gives a brief overview of wind turbine gearbox oil filtration and condition monitoring by highlighting typical industry practices and challenges. The presentation starts with an introduction by covering recent growth of global wind industry, reliability challenges, benefits of oil filtration and condition monitoring, and financial incentives to conduct wind operation and maintenance research, which includes gearbox oil filtration and condition monitoring work presented herein. Then, the presentation moves on to oil filtration by stressing the benefits of filtration, discussing typical main- and offline-loop practices, highlighting important factors considered when specifying a filtration system, and illustrating real-world application challenges through a cold-start example. In the next section on oil condition monitoring, a discussion on oil sample analysis, oil debris monitoring, oil cleanliness measurements and filter analysis is given based on testing results mostly obtained by and at NREL, and by pointing out a few challenges with oil sample analysis. The presentation concludes with a brief touch on future research and development (R and D) opportunities. It is hoping that the information presented can inform the STLE community to start or redirect their R and D work to help the wind industry advance.

  19. Coupling conditions for the shallow water equations on a network

    E-Print Network [OSTI]

    Caputo, Jean-Guy; Gleyse, Bernard

    2015-01-01

    We study numerically and analytically how nonlinear shallow water waves propagate in a fork. Using a homothetic reduction procedure, conservation laws and numerical analysis in a 2D domain, we obtain angle dependent coupling conditions for the water height and the velocity. We compare these to the ones for a class of scalar nonlinear wave equations for which the angle plays no role.

  20. Double Eagle II Airport (AEG) Pavement Condition and Analysis

    E-Print Network [OSTI]

    Cal, Mark P.

    .........................................................7. Maintenance and Rehabilitation (M&R) Options 21 ...............Table 9. Current NMDOT-Aviation Airport Development Administrator New Mexico Aviation Division P.O. Box 9830 Albuquerque, NM 87119 tel No Maintenance 11 .....................Table 4. Predicted Pavement Conditions (PCI) Assuming no Maintenance 12