Sample records for measurement-based stability assessment

  1. Measurement based Voltage Stability Monitoring of Power system Garng M. Huang

    E-Print Network [OSTI]

    Measurement based Voltage Stability Monitoring of Power system Garng M. Huang huang Station, TX 77843-3128 Abstract: Many papers discuss the voltage stability assessment of power system. The problem of voltage stability may be simply explained as inability of the power system to provide

  2. Power System Online Stability Assessment using Synchrophasor Data Mining 

    E-Print Network [OSTI]

    Zheng, Ce

    2013-04-30T23:59:59.000Z

    and ringdown analyzers by using DTs to directly map synchrophasor measurements to predefined oscillatory stability states. The proposed measurement-based approach is examined using synthetic data from simulations on IEEE test systems, and PMU measurements...

  3. On-Line Transient Stability Assessment Scoping Study

    E-Print Network [OSTI]

    On-Line Transient Stability Assessment Scoping Study Final Project Report Power Systems Engineering PSERC #12;Power Systems Engineering Research Center On-Line Transient Stability Assessment Scoping Study With the increase in transactions on the bulk power system, there is a critical need to determine transient security

  4. Power System Online Stability Assessment using Synchrophasor Data Mining

    E-Print Network [OSTI]

    Zheng, Ce

    2013-04-30T23:59:59.000Z

    Traditional power system stability assessment based on full model computation shows its drawbacks in real-time applications where fast variations are present at both demand side and supply side. This work presents the use of data mining techniques...

  5. An assessment of the mechanical stability of wells offshore Nigeria

    SciTech Connect (OSTI)

    Lowrey, J.P.; Ottesen, S.

    1995-03-01T23:59:59.000Z

    In 1991 lost time due to stuck pipe related drilling problems accounted for approximately 18% of total drilling time in Mobil Producing Nigeria Ultd.`s (MPN) offshore operations. The primary cause of stuck pipe was identified as mechanical wellbore instability. This paper presents an assessment of the mechanical stability of MPN`s wells offshore Nigeria. The objectives of the study were to: (1) determine the magnitude of the in-situ principal stresses and material properties of the troublesome Intra-Biafra and Qua Iboe shale sequences; (2) quantify the drilling fluid densities required to drill mechanically stable wells through these formations; (3) review and recommend well planning and operational parameters which aid in minimizing wellbore stability-related drilling problems. The well-bore stability assessment was carried out with the aid of a 3-dimensional wellbore stability model using field derived data from the study area to corroborate the results. The collection and analysis of drilling data (borehole geometry and density logs, pore pressure, leak-off tests, local geology and other relevant well records) to determine the magnitude of the in-situ principal stresses, together with compressive strength tests on formation cores are discussed. Minimum safe drilling fluid densities to promote wellbore stability as a function of well geometry and depth are presented for the most troublesome shales drilled in the study area. Implementation of the results reduced wellbore stability related problems and associated trouble time to less than 5% in 1992.

  6. Assessing the Stability of Protein Complexes within Large Assemblies

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Assessing the Stability of Protein Complexes within Large Assemblies F. Cazals and T. Dreyfus reconstructions of the Nuclear Pore Complex. 1 Large assemblies and tandem affinity purification data: com- plexes or mixtures? Structural genomics projects, in particular those exploiting Tandem Affinity Purification (TAP

  7. Test Area North Pool Stabilization Project: Environmental assessment

    SciTech Connect (OSTI)

    NONE

    1996-05-01T23:59:59.000Z

    The Test Area North (TAN) Pool is located within the fenced TAN facility boundaries on the Idaho National Engineering Laboratory (INEL). The TAN pool stores 344 canisters of core debris from the March, 1979, Three Mile Island (TMI) Unit 2 reactor accident; fuel assemblies from Loss-of-Fluid Tests (LOFT); and Government-owned commercial fuel rods and assemblies. The LOFT and government owned commercial fuel rods and assemblies are hereafter referred to collectively as {open_quotes}commercial fuels{close_quotes} except where distinction between the two is important to the analysis. DOE proposes to remove the canisters of TMI core debris and commercial fuels from the TAN Pool and transfer them to the Idaho Chemical Processing Plant (ICPP) for interim dry storage until an alternate storage location other than at the INEL, or a permanent federal spent nuclear fuel (SNF) repository is available. The TAN Pool would be drained and placed in an industrially and radiologically safe condition for refurbishment or eventual decommissioning. This environmental assessment (EA) identifies and evaluates environmental impacts associated with (1) constructing an Interim Storage System (ISS) at ICPP; (2) removing the TMI and commercial fuels from the pool and transporting them to ICPP for placement in an ISS, and (3) draining and stabilizing the TAN Pool. Miscellaneous hardware would be removed and decontaminated or disposed of in the INEL Radioactive Waste Management Complex (RWMC). This EA also describes the environmental consequences of the no action alternative.

  8. Draft environmental assessment -- Test Area North pool stabilization project update

    SciTech Connect (OSTI)

    NONE

    1997-06-01T23:59:59.000Z

    The purpose of this Environmental Assessment (EA) is to update the ``Test Area North Pool Stabilization Project`` EA (DOE/EA-1050) and finding of no significant impact (FONSI) issued May 6, 1996. This update analyzes the environmental and health impacts of a drying process for the Three Mile Island (TMI) nuclear reactor core debris canisters now stored underwater in a facility on the Idaho National Engineering and Environmental Laboratory (INEEL). A drying process was analyzed in the predecision versions of the EA released in 1995 but that particular process was determined to be ineffective and dropped form the Ea/FONSI issued May 6, 1996. The origin and nature of the TMI core debris and the proposed drying process are described and analyzed in detail in this EA. As did the 1996 EA, this update analyzes the environmental and health impacts of removing various radioactive materials from underwater storage, dewatering these materials, constructing a new interim dry storage facility, and transporting and placing the materials into the new facility. Also, as did the 1996 EA, this EA analyzes the removal, treatment and disposal of water from the pool, and placement of the facility into a safe, standby condition. The entire action would take place within the boundaries of the INEEL. The materials are currently stored underwater in the Test Area North (TAN) building 607 pool, the new interim dry storage facility would be constructed at the Idaho Chemical Processing Plant (ICPP) which is about 25 miles south of TAN.

  9. Initial assessment of the MHD stability of TMX-U

    SciTech Connect (OSTI)

    Nexsen, W.E.

    1983-08-04T23:59:59.000Z

    In its operation to date TMX-U has reached values of beta which, for all except the hot electron beta, are close to the proposal values and has not encountered MHD stability problems. The hot electron beta values are presently limited by gyrotron output power and pulse length as well as ion confinement time. Further exploration of stability awaits full thermal barrier operation.

  10. Strategies for Voltage Control and Transient Stability Assessment

    SciTech Connect (OSTI)

    Hiskens, Ian A.

    2013-09-25T23:59:59.000Z

    As wind generation grows, its influence on power system performance will becoming increasingly noticeable. Wind generation di#11;ffers from traditional forms of generation in numerous ways though, motivating the need to reconsider the usual approaches to power system assessment and performance enhancement. The project has investigated the impact of wind generation on transient stability and voltage control, identifying and addressing issues at three distinct levels of the power system: 1) at the device level, the physical characteristics of wind turbine generators (WTGs) are quite unlike those of synchronous machines, 2) at the wind-farm level, the provision of reactive support is achieved through coordination of numerous dissimilar devices, rather than straightforward generator control, and 3) from a systems perspective, the location of wind-farms on the sub-transmission network, coupled with the variability inherent in their power output, can cause complex voltage control issues. The project has sought to develop a thorough understanding of the dynamic behaviour of type-3 WTGs, and in particular the WECC generic model. The behaviour of such models is governed by interactions between the continuous dynamics of state variables and discrete events associated with limits. It was shown that these interactions can be quite complex, and may lead to switching deadlock that prevents continuation of the trajectory. Switching hysteresis was proposed for eliminating deadlock situations. Various type-3 WTG models include control blocks that duplicate integrators. It was shown that this leads to non-uniqueness in the conditions governing steady-state, and may result in pre- and post-disturbance equilibria not coinciding. It also gives rise to a zero eigenvalue in the linearized WTG model. In order to eliminate the anomalous behaviour revealed through this investigation, WECC has now released a new generic model for type-3 WTGs. Wind-farms typically incorporate a variety of voltage control equipment including tapchanging transformers, switched capacitors, SVCs, STATCOMs and the WTGs themselves. The project has considered the coordinated control of this equipment, and has addressed a range of issues that arise in wind-farm operation. The #12;first concerns the ability of WTGs to meet reactive power requirements when voltage saturation in the collector network restricts the reactive power availability of individual generators. Secondly, dynamic interactions between voltage regulating devices have been investigated. It was found that under certain realistic conditions, tap-changing transformers may exhibit instability. In order to meet cost, maintenance, fault tolerance and other requirements, it is desirable for voltage control equipment to be treated as an integrated system rather than as independent devices. The resulting high-level scheduling of wind-farm reactive support has been investigated. In addressing this control problem, several forms of future information were considered, including exact future knowledge and stochastic predictions. Deterministic and Stochastic Dynamic Programming techniques were used in the development of control algorithms. The results demonstrated that while exact future knowledge is very useful, simple prediction methods yield little bene#12;fit. The integration of inherently variable wind generation into weak grids, particularly subtransmission networks that are characterized by low X=R ratios, aff#11;ects bus voltages, regulating devices and line flows. The meshed structure of these networks adds to the complexity, especially when wind generation is distributed across multiple nodes. A range of techniques have been considered for analyzing the impact of wind variability on weak grids. Sensitivity analysis, based on the power-flow Jacobian, was used to highlight sections of a system that are most severely a#11;ffected by wind-power variations. A continuation power flow was used to determine parameter changes that reduce the impact of wind-power variability. It was also used to explore interactions betw

  11. Numerical assessment of stability criteria from disturbance energies in gaseous combustion

    E-Print Network [OSTI]

    Nicoud, Franck

    Numerical assessment of stability criteria from disturbance energies in gaseous combustion A, which corresponds to a ducted, laminar premixed propane-air flame, is used to assess the different terms a contribution from the unsteady heat flux-pressure correlation, allows a better agreement with the numerical

  12. Assessing climate change impacts on the near-term stability of the wind energy

    E-Print Network [OSTI]

    Pryor, Sara C.

    Assessing climate change impacts on the near-term stability of the wind energy resource over- ble emissions of carbon dioxide. The wind energy resource is natu- rally a function of the climate, leading some to question the continued viability of the wind energy industry. Here we briefly articulate

  13. Small-Signal Stability Assessment of Active Distribution Networks with Dynamic Loads

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    the flow of power and the voltage profiles of the system and these profiles are different for different types of loads [3]. In addition to the power flow at and around N. K. Roy, H. R. Pota, and T. F. OrchiSmall-Signal Stability Assessment of Active Distribution Networks with Dynamic Loads N. K. Roy

  14. Universal resources for measurement-based quantum computation

    E-Print Network [OSTI]

    Maarten Van den Nest; Akimasa Miyake; Wolfgang Dür; Hans J. Briegel

    2006-10-16T23:59:59.000Z

    We investigate which entanglement resources allow universal measurement-based quantum computation via single-qubit operations. We find that any entanglement feature exhibited by the 2D cluster state must also be present in any other universal resource. We obtain a powerful criterion to assess universality of graph states, by introducing an entanglement measure which necessarily grows unboundedly with the system size for all universal resource states. Furthermore, we prove that graph states associated with 2D lattices such as the hexagonal and triangular lattice are universal, and obtain the first example of a universal non-graph state.

  15. Electrochemical assessment and service-life prediction of mechanically stabilized earth walls backfilled with crushed concrete and recycled asphalt pavement

    E-Print Network [OSTI]

    Esfeller, Michael Watts, Jr.

    2009-06-02T23:59:59.000Z

    Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 2006 Major Subject: Civil Engineering ELECTROCHEMICAL ASSESSMENT AND SERVICE-LIFE PREDICTION... OF MECHANICALLY STABILIZED EARTH WALLS BACKFILLED WITH CRUSHED CONCRETE AND RECYCLED ASPHALT PAVEMENT A Thesis by MICHAEL WATTS ESFELLER, JR. Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  16. Optimization strategies in measurement based quantum computation

    E-Print Network [OSTI]

    Giulia Ferrini; Jonathan Roslund; Francesco Arzani; Yin Cai; Claude Fabre; Nicolas Treps

    2014-07-20T23:59:59.000Z

    This work introduces optimization strategies to continuous variable measurement based quantum computation (MBQC) at different levels. We provide a recipe for mitigating the effects of finite squeezing, which affect the production of cluster states and the result of a traditional MBQC. These strategies are readily implementable by several experimental groups. Furthermore, a more general scheme for MBQC is introduced that does not necessarily rely on the use of ancillary cluster states to achieve its aim, but rather on the detection of a resource state in a suitable mode basis followed by digital post-processing. A recipe is provided to optimize the adjustable parameters that are employed within this framework.

  17. Transient Stability Assessment of Power System with Large Amount of Wind Power Penetration: the

    E-Print Network [OSTI]

    Bak, Claus Leth

    the transient stability. In Denmark, the onshore and offshore wind farms are connected to distribution system and transmission system respectively. The control and protection methodologies of onshore and offshore wind farms definitely affect the transient stability of power system. In this paper, the onshore and offshore wind farms

  18. Phase Stability and Thermodynamic Assessment of the Np-Zr system

    E-Print Network [OSTI]

    Bajaj, Saurabh

    2012-02-14T23:59:59.000Z

    of minor actinides and fission products on phase stability. Within this framework, we present a study on phase equilibria in the binary Np-Zr alloy system on which little work has been published. To resolve the contradictory reports on the ordering...

  19. Steam generation in line-focus solar collectors: a comparative assessment of thermal performance, operating stability, and cost issues

    SciTech Connect (OSTI)

    Murphy, L.M.; May, E.K.

    1982-04-01T23:59:59.000Z

    The engineering and system benefits of using direct steam (in situ) generation in line-focus collectors are assessed. The major emphasis of the analysis is a detailed thermal performance comparison of in situ systems (which utilize unfired boilers). The analysis model developed for this study is discussed in detail. An analysis of potential flow stability problems is also provided along with a cursory cost analysis and an assessment of freeze protection, safety, and control issues. Results indicated a significant thermal performance advantage over the more conventional oil and flash systems and the flow stability does not appear to be a significant problem. In particular, at steam temperatures of 220/sup 0/C (430/sup 0/F) under the chosen set of assumptions, annual delivered energy predictions indicate that the in situ system can deliver 15% more energy than an oil system and 12% more energy than a flash system, with all of the systems using the same collector field. Further, the in situ system may result in a 10% capital cost reduction. Other advantages include improvement in simpler control when compared with flash systems, and fluid handling and safety enhancement when compared with oil systems.

  20. Fast Dynamic Simulation-Based Small Signal Stability Assessment and Control

    SciTech Connect (OSTI)

    Acharya, Naresh; Baone, Chaitanya; Veda, Santosh; Dai, Jing; Chaudhuri, Nilanjan; Leonardi, Bruno; Sanches-Gasca, Juan; Diao, Ruisheng; Wu, Di; Huang, Zhenyu; Zhang, Yu; Jin, Shuangshuang; Zheng, Bin; Chen, Yousu

    2014-12-31T23:59:59.000Z

    Power grid planning and operation decisions are made based on simulation of the dynamic behavior of the system. Enabling substantial energy savings while increasing the reliability of the aging North American power grid through improved utilization of existing transmission assets hinges on the adoption of wide-area measurement systems (WAMS) for power system stabilization. However, adoption of WAMS alone will not suffice if the power system is to reach its full entitlement in stability and reliability. It is necessary to enhance predictability with "faster than real-time" dynamic simulations that will enable the dynamic stability margins, proactive real-time control, and improve grid resiliency to fast time-scale phenomena such as cascading network failures. Present-day dynamic simulations are performed only during offline planning studies, considering only worst case conditions such as summer peak, winter peak days, etc. With widespread deployment of renewable generation, controllable loads, energy storage devices and plug-in hybrid electric vehicles expected in the near future and greater integration of cyber infrastructure (communications, computation and control), monitoring and controlling the dynamic performance of the grid in real-time would become increasingly important. The state-of-the-art dynamic simulation tools have limited computational speed and are not suitable for real-time applications, given the large set of contingency conditions to be evaluated. These tools are optimized for best performance of single-processor computers, but the simulation is still several times slower than real-time due to its computational complexity. With recent significant advances in numerical methods and computational hardware, the expectations have been rising towards more efficient and faster techniques to be implemented in power system simulators. This is a natural expectation, given that the core solution algorithms of most commercial simulators were developed decades ago, when High Performance Computing (HPC) resources were not commonly available.

  1. Towards Adaptive Educational Assessments: Predicting Student Performance using Temporal Stability and Data Analytics in Learning Management Systems

    SciTech Connect (OSTI)

    Thakur, Gautam [ORNL] [ORNL; Olama, Mohammed M [ORNL] [ORNL; McNair, Wade [ORNL] [ORNL; Sukumar, Sreenivas R [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    Data-driven assessments and adaptive feedback are becoming a cornerstone research in educational data analytics and involve developing methods for exploring the unique types of data that come from the educational context. For example, predicting college student performance is crucial for both the students and educational institutions. It can support timely intervention to prevent students from failing a course, increasing efficacy of advising functions, and improving course completion rate. In this paper, we present our efforts in using data analytics that enable educationists to design novel data-driven assessment and feedback mechanisms. In order to achieve this objective, we investigate temporal stability of students grades and perform predictive analytics on academic data collected from 2009 through 2013 in one of the most commonly used learning management systems, called Moodle. First, we have identified the data features useful for assessments and predicting student outcomes such as students scores in homework assignments, quizzes, exams, in addition to their activities in discussion forums and their total Grade Point Average(GPA) at the same term they enrolled in the course. Second, time series models in both frequency and time domains are applied to characterize the progression as well as overall projections of the grades. In particular, the model analyzed the stability as well as fluctuation of grades among students during the collegiate years (from freshman to senior) and disciplines. Third, Logistic Regression and Neural Network predictive models are used to identify students as early as possible who are in danger of failing the course they are currently enrolled in. These models compute the likelihood of any given student failing (or passing) the current course. The time series analysis indicates that assessments and continuous feedback are critical for freshman and sophomores (even with easy courses) than for seniors, and those assessments may be provided using the predictive models. Numerical results are presented to evaluate and compare the performance of the developed models and their predictive accuracy. Our results show that there are strong ties associated with the first few weeks for coursework and they have an impact on the design and distribution of individual modules.

  2. Coherent feedback that beats all measurement-based feedback protocols

    E-Print Network [OSTI]

    Jacobs, Kurt

    We show that when the speed of control is bounded, there is a widely applicable minimal-time control problem for which a coherent feedback protocol is optimal, and is faster than all measurement-based feedback protocols, ...

  3. Coherent feedback that beats all measurement-based feedback protocols

    E-Print Network [OSTI]

    Kurt Jacobs; Xiaoting Wang; Howard M. Wiseman

    2014-07-21T23:59:59.000Z

    We show that when the speed of control is bounded, there is a widely applicable minimal-time control problem for which a coherent feedback protocol is optimal, and is faster than all measurement-based feedback protocols, where the latter are defined in a strict sense. The superiority of the coherent protocol is due to the fact that it can exploit a geodesic path in Hilbert space, a path that measurement-based protocols cannot follow.

  4. Measurement-Based Quantum Turing Machines and Questions of Universalities

    E-Print Network [OSTI]

    Simon Perdrix; Philippe Jorrand

    2004-02-20T23:59:59.000Z

    Quantum measurement is universal for quantum computation. This universality allows alternative schemes to the traditional three-step organisation of quantum computation: initial state preparation, unitary transformation, measurement. In order to formalize these other forms of computation, while pointing out the role and the necessity of classical control in measurement-based computation, and for establishing a new upper bound of the minimal resources needed to quantum universality, a formal model is introduced by means of Measurement-based Quantum Turing Machines.

  5. Measurement-Based Quantum Turing Machines and their Universality

    E-Print Network [OSTI]

    Simon Perdrix; Philippe Jorrand

    2004-04-27T23:59:59.000Z

    Quantum measurement is universal for quantum computation. This universality allows alternative schemes to the traditional three-step organisation of quantum computation: initial state preparation, unitary transformation, measurement. In order to formalize these other forms of computation, while pointing out the role and the necessity of classical control in measurement-based computation, and for establishing a new upper bound of the minimal resources needed to quantum universality, a formal model is introduced by means of Measurement-based Quantum Turing Machines.

  6. Assessment of structures and stabilities of defect clusters and surface energies predicted by nine interatomic potentials for UO2

    SciTech Connect (OSTI)

    Stephen A. Taller; Xian-Ming Bai

    2013-11-01T23:59:59.000Z

    The irradiation in nuclear reactors creates many point defects and defect clusters in uranium dioxide (UO2) and their evolution severely degrades the thermal and mechanical properties of the nuclear fuels. Previously many empirical interatomic potentials have been developed for modeling defect production and evolution in UO2. However, the properties of defect clusters and extended defects are usually not fitted into these potentials. In this work nine interatomic potentials for UO2 are examined by using molecular statics and molecular dynamics to assess their applicability in predicting the properties of various types of defect clusters in UO2. The binding energies and structures for these defect clusters have been evaluated for each potential. In addition, the surface energies of voids of different radii and (1 1 0) flat surfaces predicted by these potentials are also evaluated. It is found that both good agreement and significant discrepancies exist for these potentials in predicting these properties. For oxygen interstitial clusters, these potentials predict significantly different defect cluster structures and stabilities; For defect clusters consisting of both uranium and oxygen defects, the prediction is in better agreement; The surface energies predicted by these potentials have significant discrepancies, and some of them are much higher than the experimentally measured values. The results from this work can provide insight on interpreting the outcome of atomistic modeling of defect production using these potentials and may provide guidelines for choosing appropriate potential models to study problems of interest in UO2.

  7. An Assessment of the Stability and the Potential for In-Situ Synthesis of Regulated Organic Compounds in High Level Radioactive Waste Stored at Hanford, Richland, Washington

    SciTech Connect (OSTI)

    Wiemers, K.D.; Babad, H.; Hallen, R.T.; Jackson, L.P.; Lerchen, M.E.

    1999-01-04T23:59:59.000Z

    The stability assessment examined 269 non-detected regulated compounds, first seeking literature references of the stability of the compounds, then evaluating each compound based upon the presence of functional groups using professional judgment. Compounds that could potentially survive for significant periods in the tanks (>1 year) were designated as stable. Most of the functional groups associated with the regulated organic compounds were considered unstable under tank waste conditions. The general exceptions with respect to functional group stability are some simple substituted aromatic and polycyclic aromatic compounds that resist oxidation and the multiple substituted aliphatic and aromatic halides that hydrolyze or dehydrohalogenate slowly under tank waste conditions. One-hundred and eighty-one (181) regulated, organic compounds were determined as likely unstable in the tank waste environment.

  8. Accelerated screening methods for determining chemical and thermal stability of refrigerant-lubricant mixtures, Part 1: Method assessment. Final report

    SciTech Connect (OSTI)

    Kauffman, R.

    1993-04-01T23:59:59.000Z

    This report presents results of a literature search performed to identify analytical techniques suitable for accelerated screening of chemical and thermal stabilities of different refrigerant/lubricant combinations. Search focused on three areas: Chemical stability data of HFC-134a and other non-chlorine containing refrigerant candidates; chemical stability data of CFC-12, HCFC-22, and other chlorine containing refrigerants; and accelerated thermal analytical techniques. Literature was catalogued and an abstract was written for each journal article or technical report. Several thermal analytical techniques were identified as candidates for development into accelerated screening tests. They are easy to operate, are common to most laboratories, and are expected to produce refrigerant/lubricant stability evaluations which agree with the current stability test ANSI/ASHRAE (American National Standards Institute/American Society of Heating, Refrigerating, and Air-Conditioning Engineers) Standard 97-1989, ``Sealed Glass Tube Method to Test the Chemical Stability of Material for Use Within Refrigerant Systems.`` Initial results of one accelerated thermal analytical candidate, DTA, are presented for CFC-12/mineral oil and HCFC-22/mineral oil combinations. Also described is research which will be performed in Part II to optimize the selected candidate.

  9. Assessment of substrate-stabilizing factors for DnaK on the folding of aggregation-prone proteins

    SciTech Connect (OSTI)

    Ryu, Kisun; Kim, Chul Woo; Kim, Byung Hee [Department of Biotechnology, College of Engineering, Yonsei University, 134 Shinchon-Dong, Seodaemun-Gu, Seoul 120-749 (Korea, Republic of); Han, Kyoung Sim [Protheon Incorporated, Yonsei Engineering Research Center B120E, 134 Shinchon-Dong, Seodaemun-Gu, Seoul 120-749 (Korea, Republic of); Kim, Kyun-Hwan [Department of Pharmacology, School of Medicine, and Center for Diagnostic Medicine, Institute of Biomedical Science and Technology, Konkuk University, Seoul 143-701 (Korea, Republic of); Choi, Seong Il [Department of Biotechnology, College of Engineering, Yonsei University, 134 Shinchon-Dong, Seodaemun-Gu, Seoul 120-749 (Korea, Republic of); Institute of Life Science and Biotechnology, Yonsei University, 134 Shinchon-Dong, Seodaemun-Gu, Seoul 120-749 (Korea, Republic of)], E-mail: seongilchoi@daum.net; Seong, Baik L. [Department of Biotechnology, College of Engineering, Yonsei University, 134 Shinchon-Dong, Seodaemun-Gu, Seoul 120-749 (Korea, Republic of); Protheon Incorporated, Yonsei Engineering Research Center B120E, 134 Shinchon-Dong, Seodaemun-Gu, Seoul 120-749 (Korea, Republic of); Institute of Life Science and Biotechnology, Yonsei University, 134 Shinchon-Dong, Seodaemun-Gu, Seoul 120-749 (Korea, Republic of)], E-mail: blseong@yonsei.ac.kr

    2008-08-15T23:59:59.000Z

    Hydrophobic interactions between molecular chaperones and their nonnative substrates have been believed to be mainly responsible for both substrate recognition and stabilization against aggregation. However, the hydrophobic contact area between DnaK and its substrate proteins is very limited and other factors of DnaK for the substrate stabilization could not be excluded. Here, we covalently fused DnaK to the N-termini of aggregation-prone proteins in vivo. In the context of a fusion protein, DnaK has the ability to efficiently solubilize its linked proteins. The point mutation of the residue of DnaK critical for the substrate recognition and the deletion of the C-terminal substrate-binding domain did not have significant effect on the solubilizing ability of DnaK. The results imply that other factors of DnaK, distinct from the hydrophobic shielding of folding intermediates, also contributes to stabilization of its noncovalently bound substrates against aggregation. Elucidation of the nature of these factors would further enhance our understanding of the substrate stabilization of DnaK for expedited protein folding.

  10. Resources for Measurement-Based Quantum Carry-Lookahead Adder

    E-Print Network [OSTI]

    Agung Trisetyarso; Rodney Van Meter; Kohei M. Itoh

    2009-02-14T23:59:59.000Z

    We present the design of a quantum carry-lookahead adder using measurement-based quantum computation. QCLA utilizes MBQC`s ability to transfer quantum states in unit time to accelerate addition. The quantum carry-lookahead adder (QCLA) is faster than a quantum ripple-carry adder; QCLA has logarithmic depth while ripple adders have linear depth. QCLA is an order of magnitude faster than a ripple-carry adder when adding registers longer than 100 qubits but requires a cluster state that is an order of magnitude larger. Hand optimization results in a $\\approx$ 26% reduction in spatial resources for the circuit.

  11. Cross-nucleation between clathrate hydrate polymorphs: Assessing the role of stability, growth rate, and structure matching

    SciTech Connect (OSTI)

    Nguyen, Andrew H.; Molinero, Valeria, E-mail: Valeria.Molinero@utah.edu [Department of Chemistry, The University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-0850 (United States)] [Department of Chemistry, The University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-0850 (United States)

    2014-02-28T23:59:59.000Z

    Cross-nucleation is a phenomenon where a new crystal nucleates and grows upon the surface of a different polymorph. Previous studies indicate that faster growth rate of the new crystal is a necessary but not sufficient condition for cross-nucleation. The thermodynamic stability of the different polymorphs can also affect cross-nucleation by modulating the rates of crystal growth. The interplay between thermodynamic stability of the polymorphs involved, the growth rate of the crystals, and the need for creation of an interfacial transition layer that seamlessly connects the two structures has not yet been fully elucidated. Predicting cross-nucleation is particularly challenging for clathrate hydrates, for which there are sometimes several polymorphs with similar stability and for which growth rates are not known. In this work, we use molecular dynamics simulations to investigate which factor (stability, growth rate, or formation of interfacial transition layer) controls cross-nucleation between the four known Frank-Kasper clathrate hydrate polymorphs: sI, sII, TS, and HS-I. We investigate the growth and cross-nucleation of these four hydrates filled with a set of guest molecules that produce different order of stabilities for the four crystal structures. We determine that the growth rate of sII clathrate is the fastest, followed by TS, HS-I, and sI. We find that cross-nucleation into or from sII clathrates is preceded by the formation of an interfacial transition layer at the seed crystal/liquid interface because sII does not share a crystal plane with sI, HS-I, or TS. Cross-nucleation between the latter three can occur seamlessly and is determined only by their growth rates. Our results indicate that nucleation of an interfacial transition layer between non-matching polymorphs can control cross-nucleation or lack thereof under conditions of small driving force. Under conditions of sufficient supercooling clathrate hydrate polymorphs cross-nucleate into the fastest growing phase even if that new phase is less stable and does not share a common crystal plane with the initial polymorph.

  12. Measurement-Based Quantum Computing with Valence-Bond-Solids

    E-Print Network [OSTI]

    Leong Chuan Kwek; Zhaohui Wei; Bei Zeng

    2011-11-22T23:59:59.000Z

    Measurement-based quantum computing (MBQC) is a model of quantum computing that proceeds by sequential measurements of individual spins in an entangled resource state. However, it remains a challenge to produce efficiently such resource states. Would it be possible to generate these states by simply cooling a quantum many-body system to its ground state? Cluster states, the canonical resource states for MBQC, do not occur naturally as unique ground states of physical systems. This inherent hurdle has led to a significant effort to identify alternative resource states that appear as ground states in spin lattices. Recently, some interesting candidates have been identified with various valence-bond-solid (VBS) states. In this review, we provide a pedagogical introduction to recent progress regarding MBQC with VBS states as possible resource states. This study has led to an interesting interdisciplinary research area at the interface of quantum information science and condensed matter physics.

  13. Measurement-Based Quantum Computing with Valence-Bond-Solids

    E-Print Network [OSTI]

    Kwek, Leong Chuan; Zeng, Bei

    2011-01-01T23:59:59.000Z

    Measurement-based quantum computing (MBQC) is a model of quantum computing that proceeds by sequential measurements of individual spins in an entangled resource state. However, it remains a challenge to produce efficiently such resource states. Would it be possible to generate these states by simply cooling a quantum many-body system to its ground state? Cluster states, the canonical resource states for MBQC, do not occur naturally as unique ground states of physical systems. This inherent hurdle has led to a significant effort to identify alternative resource states that appear as ground states in spin lattices. Recently, some interesting candidates have been identified with various valence-bond-solid (VBS) states. In this review, we provide a pedagogical introduction to recent progress regarding MBQC with VBS states as possible resource states. This study has led to an interesting interdisciplinary research area at the interface of quantum information science and condensed matter physics.

  14. Environmental Assessment for U-233 Stabilization, and Building 3019 Complex Shutdown at the Oak Ridge National Laboratory Oak Ridge, Tennessee

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,OfficeEnd of Year 2010 SNFEnergySession0-02 -RailroadEnvironmentalAssessment574

  15. Synchrophasor Measurement-Based Wind Plant Inertia Estimation: Preprint

    SciTech Connect (OSTI)

    Zhang, Y.; Bank, J.; Wan, Y. H.; Muljadi, E.; Corbus, D.

    2013-05-01T23:59:59.000Z

    The total inertia stored in all rotating masses that are connected to power systems, such as synchronous generations and induction motors, is an essential force that keeps the system stable after disturbances. To ensure bulk power system stability, there is a need to estimate the equivalent inertia available from a renewable generation plant. An equivalent inertia constant analogous to that of conventional rotating machines can be used to provide a readily understandable metric. This paper explores a method that utilizes synchrophasor measurements to estimate the equivalent inertia that a wind plant provides to the system.

  16. Evaluation of Solvita compost stability and maturity tests for assessment of quality of end-products from mixed latrine style compost toilets

    SciTech Connect (OSTI)

    Hill, Geoffrey B., E-mail: geoff.hill@geog.ubc.ca [University of British Columbia, Department of Geography, 1984 West Mall, Vancouver, Canada V6T 1Z2 (Canada); Baldwin, Susan A. [Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, B.C., Canada V6T 1Z3 (Canada); Vinnerĺs, Bjorn [Swedish University of Agricultural Sciences, Box 7032, SE-750 07 Uppsala (Sweden)

    2013-07-15T23:59:59.000Z

    Highlights: • Solvita® stability and maturity tests used on composting toilet end-product. • Solvita® ammonia better suited in evaluation of feedstock suitability for vermicomposting. • No clear value of Solvita® stability test due to prevalent inhibition of decomposition by ammonia. - Abstract: It is challenging and expensive to monitor and test decentralized composting toilet systems, yet critical to prevent the mismanagement of potentially harmful and pathogenic end-product. Recent studies indicate that mixed latrine composting toilets can be inhibited by high ammonia content, a product of urea hydrolysis. Urine-diverting vermicomposting toilets are better able to accomplish the goals of remote site human waste management by facilitating the consumption of fecal matter by earthworms, which are highly sensitive to ammonia. The reliability of Solvita® compost stability and maturity tests were evaluated as a means of determining feedstock suitability for vermicomposting (ammonia) and end-product stability/completeness (carbon dioxide). A significant linear regression between Solvita® ammonia and free ammonia gas was found. Solvita® ranking of maturity did not correspond to ranking assigned by ammonium:nitrate standards. Solvita® ammonia values 4 and 5 contained ammonia levels below earthworm toxicity limits in 80% and 100% of samples respectively indicative of their use in evaluating feedstock suitability for vermicomposting. Solvita® stability tests did not correlate with carbon dioxide evolution tests nor ranking of stability by the same test, presumably due to in situ inhibition of decomposition and microbial respiration by ammonia which were reported by the Solvita® CO{sub 2} test as having high stability values.

  17. Sea-ice thickness measurement based on the dispersion of ice swell

    E-Print Network [OSTI]

    -year pack ice, although other char- acteristics (Young's modulus, shear modulus, and Poisson coefficientSea-ice thickness measurement based on the dispersion of ice swell David Marsana) ISTerre, CNRS propagating in the Arctic sea ice cover is exploited in order to locally measure the ice thickness

  18. A Measurement-Based Admission-Controlled Web Server Kelvin Li Sugih Jamin

    E-Print Network [OSTI]

    Jamin, Sugih

    A Measurement-Based Admission-Controlled Web Server Kelvin Li Sugih Jamin Electrical Engineering-2122 {nivlek, jamin}@eecs.umich.edu Abstract- Current HTTP servers process requests using a first come first serve queuing policy. What this implies is that the web server must process each request as it arrives

  19. Fast, long-scan-range pump-probe measurement based on asynchronous sampling using a dual-

    E-Print Network [OSTI]

    Wu, Shin-Tson

    Fast, long-scan-range pump-probe measurement based on asynchronous sampling using a dual-scan-range pump-probe scheme is experimentally demonstrated using a dual-wavelength passively mode- locked fiber. 134(25), 10569­10583 (2012). 4. A. Schmidt, M. Chiesa, X. Chen, and G. Chen, "An optical pump

  20. 1 ISERN-96-05 Practical Guidelines for Measurement-Based Process Improvement1

    E-Print Network [OSTI]

    Briand, Lionel C.

    1 ISERN-96-05 Practical Guidelines for Measurement-Based Process Improvement1 Lionel C. Briand guidelines for efficient and useful software measurement aimed at process improvement in industry. Issues the consistency and completeness of measurement plans. More precisely, our guidelines will be defined

  1. European Wind Energy Conference 2007 Milan Measurement based analysis of active and reactive power

    E-Print Network [OSTI]

    European Wind Energy Conference 2007 ­ Milan 1 Measurement based analysis of active and reactive of the electricity is produced by wind turbines and combined heat and power plants (CHPs). Most of them are connected of reactive power between the 60 kV and the 150 kV networks. Further, the TSO is obligated to compensate

  2. S. KHANNA, S. SARKAR, I. SHIN 1 An Energy Measurement Based Collision

    E-Print Network [OSTI]

    Sarkar, Saswati

    S. KHANNA, S. SARKAR, I. SHIN 1 An Energy Measurement Based Collision Resolution Protocol Sanjeev Khanna, Saswati Sarkar, Insik Shin Abstract--- A central problem in wireless packet networks is the ef@cis.upenn.edu . S. Sarkar, Dept. of Electrical Engineering, University of Pennsylva­ nia, PA, USA. E­mail: swati

  3. A Measurement-Based Model of Energy Consumption for PLC Modems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Measurement-Based Model of Energy Consumption for PLC Modems Wafae Bakkali(,§), Mohamed Tlich- ysis of the energy consumption of commercial broadband PLC modems is reported. Energy consumption that quantifies the energy consumption associated to Ethernet frames and PLC Physical Blocks (PBs) processing

  4. Abstract--In this paper, a new methodology for stability assessment of a smart power system is proposed. The key to this

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    ANY of the public infrastructures like electric power network are subject to two types of threats networks approach to electric power network security would identify key vulnerabilities, assess vulnerability of the North American power grid was studied after the August 2003 blackout affecting the United

  5. On measurement-based quantum computation with the toric code states

    E-Print Network [OSTI]

    Sergey Bravyi; Robert Raussendorf

    2006-10-19T23:59:59.000Z

    We study measurement-based quantum computation (MQC) using as quantum resource the planar code state on a two-dimensional square lattice (planar analogue of the toric code). It is shown that MQC with the planar code state can be efficiently simulated on a classical computer if at each step of MQC the sets of measured and unmeasured qubits correspond to connected subsets of the lattice.

  6. Material stabilization characterization management plan

    SciTech Connect (OSTI)

    GIBSON, M.W.

    1999-08-31T23:59:59.000Z

    This document presents overall direction for characterization needs during stabilization of SNM at the Plutonium Finishing Plant (PFP). Technical issues for needed data and equipment are identified. Information on material categories and links to vulnerabilities are given. Comparison data on the material categories is discussed to assist in assessing the relative risks and desired processing priority.

  7. Convex Hulls of Varieties and Entanglement Measures Based on the Roof Construction

    E-Print Network [OSTI]

    Tobias J. Osborne

    2004-03-12T23:59:59.000Z

    In this paper we study the problem of calculating the convex hull of certain affine algebraic varieties. As we explain, the motivation for considering this problem is that certain pure-state measures of quantum entanglement, which we call polynomial entanglement measures, can be represented as affine algebraic varieties. We consider the evaluation of certain mixed-state extensions of these polynomial entanglement measures, namely convex and concave roofs. We show that the evaluation of a roof-based mixed-state extension is equivalent to calculating a hyperplane which is multiply tangent to the variety in a number of places equal to the number of terms in an optimal decomposition for the measure. In this way we provide an implicit representation of optimal decompositions for mixed-state entanglement measures based on the roof construction.

  8. Classical simulation of measurement-based quantum computation on higher-genus surface-code states

    E-Print Network [OSTI]

    Leonard Goff; Robert Raussendorf

    2012-10-31T23:59:59.000Z

    We consider the efficiency of classically simulating measurement-based quantum computation on surface-code states. We devise a method for calculating the elements of the probability distribution for the classical output of the quantum computation. The operational cost of this method is polynomial in the size of the surface-code state, but in the worst case scales as $2^{2g}$ in the genus $g$ of the surface embedding the code. However, there are states in the code space for which the simulation becomes efficient. In general, the simulation cost is exponential in the entanglement contained in a certain effective state, capturing the encoded state, the encoding and the local post-measurement states. The same efficiencies hold, with additional assumptions on the temporal order of measurements and on the tessellations of the code surfaces, for the harder task of sampling from the distribution of the computational output.

  9. Universal resources for approximate and stochastic measurement-based quantum computation

    E-Print Network [OSTI]

    C. E. Mora; M. Piani; A. Miyake; M. Van den Nest; W. Dür; H. J. Briegel

    2010-05-10T23:59:59.000Z

    We investigate which quantum states can serve as universal resources for approximate and stochastic measurement-based quantum computation, in the sense that any quantum state can be generated from a given resource by means of single-qubit (local) operations assisted by classical communication. More precisely, we consider the approximate and stochastic generation of states, resulting e.g. from a restriction to finite measurement settings or from possible imperfections in the resources or local operations. We show that entanglement-based criteria for universality obtained for the exact, deterministic case can be lifted to the much more general approximate, stochastic case, moving from the idealized situation considered in previous works, to the practically relevant context of non-perfect state preparation. We find that any entanglement measure fulfilling some basic requirements needs to reach its maximum value on some element of an approximate, stochastic universal family of resource states, as the resource size grows. This allows us to rule out various families of states as being approximate, stochastic universal. We provide examples of resources that are efficient approximate universal, but not exact deterministic universal. We also study the robustness of universal resources for measurement-based quantum computation under realistic assumptions about the (imperfect) generation and manipulation of entangled states, giving an explicit expression for the impact that errors made in the preparation of the resource have on the possibility to use it for universal approximate and stochastic state preparation. Finally, we discuss the relation between our entanglement-based criteria and recent results regarding the uselessness of states with a high degree of geometric entanglement as universal resources.

  10. Assessment of children's understanding of dispositional stability

    E-Print Network [OSTI]

    Allen, Elizabeth Ann

    1993-01-01T23:59:59.000Z

    and 23 second- through fourth-graders made quantitative predictions of future generous behavior and ratings of kindness for peers given 2 pieces of behavioral information, the actor's motivational state and the valence (positive action vs. negative action...

  11. Longitudinal Stability Calculations

    SciTech Connect (OSTI)

    Blaskiewicz,M.

    2009-01-02T23:59:59.000Z

    Coupled bunch longitudinal stability in the presence of high frequency impedances is considered. A frequency domain technique is developed and compared with simulations. The frequency domain technique allows for absolute stability tests and is applied to the problem of longitudinal stability in RHIC with the new 56 MHz RF system.

  12. Fiscal Year 2012 Revegetation Assessment

    SciTech Connect (OSTI)

    Jenifer Nordstrom

    2012-11-01T23:59:59.000Z

    This report summarizes the Fiscal Year 2012 Revegetation Assessment by Battelle Energy Alliance, LLC. This assessment was conducted to supplement documentation related to the Storm Water Pollution Prevention Plan for Construction Activities and to ensure that disturbed vegetation and soil at various locations are being restored. This report provides the following information for each site being monitored by the Idaho National Laboratory Environmental Support and Services: • Summary of each site • Assessment of vegetation status and site stabilization at each location • Actions and Resolutions for each site. Ten disturbed sites were evaluated for this assessment. Six have achieved final stabilization. The remaining four sites not meeting the criteria for final stabilization will be evaluated again in the next fiscal year.

  13. Fiscal Year 2013 Revegetation Assessment

    SciTech Connect (OSTI)

    Jenifer Nordstrom

    2013-11-01T23:59:59.000Z

    This report summarizes the Fiscal Year 2013 Revegetation Assessment by Battelle Energy Alliance, LLC. This assessment was conducted to supplement documentation related to the Storm Water Pollution Prevention Plan for Construction Activities and to ensure that disturbed vegetation and soil at various locations are being restored. This report provides the following information for each site being monitored by the Idaho National Laboratory Environmental Support and Services: Summary of each site Assessment of vegetation status and site stabilization at each location Actions and Resolutions for each site. Six disturbed sites were evaluated for this assessment. One has achieved final stabilization. The remaining five sites not meeting the criteria for final stabilization will be evaluated again in the next fiscal year.

  14. Variations on stability

    E-Print Network [OSTI]

    Ruben Minasian; Alessandro Tomasiello

    2002-05-07T23:59:59.000Z

    We explore the effects of non-abelian dynamics of D-branes on their stability and introduce Hitchin-like modifications to previously-known stability conditions. The relation to brane-antibrane systems is used in order to rewrite the equations in terms of superconnections and arrive at deformed vortex equations.

  15. Variations on stability

    E-Print Network [OSTI]

    Minasian, R; Minasian, Ruben; Tomasiello, Alessandro

    2001-01-01T23:59:59.000Z

    We explore the effects of non-abelian dynamics of D-branes on their stability and introduce Hitchin-like modifications to previously-known stability conditions. The relation to brane-antibrane systems is used in order to rewrite the equations in terms of superconnections and arrive at deformed vortex equations.

  16. Homological stabilizer codes

    SciTech Connect (OSTI)

    Anderson, Jonas T., E-mail: jonastyleranderson@gmail.com

    2013-03-15T23:59:59.000Z

    In this paper we define homological stabilizer codes on qubits which encompass codes such as Kitaev's toric code and the topological color codes. These codes are defined solely by the graphs they reside on. This feature allows us to use properties of topological graph theory to determine the graphs which are suitable as homological stabilizer codes. We then show that all toric codes are equivalent to homological stabilizer codes on 4-valent graphs. We show that the topological color codes and toric codes correspond to two distinct classes of graphs. We define the notion of label set equivalencies and show that under a small set of constraints the only homological stabilizer codes without local logical operators are equivalent to Kitaev's toric code or to the topological color codes. - Highlights: Black-Right-Pointing-Pointer We show that Kitaev's toric codes are equivalent to homological stabilizer codes on 4-valent graphs. Black-Right-Pointing-Pointer We show that toric codes and color codes correspond to homological stabilizer codes on distinct graphs. Black-Right-Pointing-Pointer We find and classify all 2D homological stabilizer codes. Black-Right-Pointing-Pointer We find optimal codes among the homological stabilizer codes.

  17. Stabilized radio frequency quadrupole

    DOE Patents [OSTI]

    Lancaster, Henry D. (Orinda, CA); Fugitt, Jock A. (Berkeley, CA); Howard, Donald R. (Danville, CA)

    1984-01-01T23:59:59.000Z

    A long-vane stabilized radio frequency resonator for accelerating charged particles and including means defining a radio frequency resonator cavity, a plurality of long vanes mounted in the defining means for dividing the cavity into sections, and means interconnecting opposing ones of the plurality of vanes for stabilizing the resonator.

  18. Thermal Stabilization Blend Plan

    SciTech Connect (OSTI)

    RISENMAY, H.R.

    2000-05-02T23:59:59.000Z

    This Blend Plan documents the feed material items that are stored in 2736-2 vaults, the 2736-ZB 638 cage, the 192C vault, and the 225 vault that will be processed through the thermal stabilization furnaces. The purpose of thermal stabilization is to heat the material to 1000 degrees Celsius to drive off all water and leave the plutonium and/or uranium as oxides. The stabilized material will be sampled to determine the Loss On Ignition (LOI) or percent water. The stabilized material must meet water content or LOI of less than 0.5% to be acceptable for storage under DOE-STD-3013-99 specifications. Out of specification material will be recycled through the furnaces until the water or LOI limits are met.

  19. Renewable source controls for grid stability.

    SciTech Connect (OSTI)

    Byrne, Raymond Harry; Elliott, Ryan Thomas; Neely, Jason C.; Silva Monroy, Cesar Augusto; Schoenwald, David Alan; Grant, Lisa

    2012-12-01T23:59:59.000Z

    The goal of this study was to evaluate the small signal and transient stability of the Western Electric- ity Coordinating Council (WECC) under high penetrations of renewable energy, and to identify control technologies that would improve the system performance. The WECC is the regional entity responsible for coordinating and promoting bulk electric system reliability in the Western Interconnection. Transient stability is the ability of the power system to maintain synchronism after a large disturbance while small signal stability is the ability of the power system to maintain synchronism after a small disturbance. Tran- sient stability analysis usually focuses on the relative rotor angle between synchronous machines compared to some stability margin. For this study we employed generator speed relative to system speed as a metric for assessing transient stability. In addition, we evaluated the system transient response using the system frequency nadir, which provides an assessment of the adequacy of the primary frequency control reserves. Small signal stability analysis typically identi es the eigenvalues or modes of the system in response to a disturbance. For this study we developed mode shape maps for the di erent scenarios. Prony analysis was applied to generator speed after a 1.4 GW, 0.5 second, brake insertion at various locations. Six di erent WECC base cases were analyzed, including the 2022 light spring case which meets the renewable portfolio standards. Because of the di culty in identifying the cause and e ect relationship in large power system models with di erent scenarios, several simulations were run on a 7-bus, 5-generator system to isolate the e ects of di erent con gurations. Based on the results of the study, for a large power system like the WECC, incorporating frequency droop into wind/solar systems provides a larger bene t to system transient response than replacing the lost inertia with synthetic inertia. From a small signal stability perspective, the increase in renewable penetration results in subtle changes to the system modes. In gen- eral, mode frequencies increase slightly, and mode shapes remain similar. The system frequency nadir for the 2022 light spring case was slightly lower than the other cases, largely because of the reduced system inertia. However, the nadir is still well above the minimum load shedding frequency of 59.5 Hz. Finally, several discrepancies were identi ed between actual and reported wind penetration, and additional work on wind/solar modeling is required to increase the delity of the WECC models.

  20. Stabilized PV system

    DOE Patents [OSTI]

    Dinwoodie, Thomas L. (Piedmont, CA)

    2002-12-17T23:59:59.000Z

    A stabilized PV system comprises an array of photovoltaic (PV) assemblies mounted to a support surface. Each PV assembly comprises a PV module and a support assembly securing the PV module to a position overlying the support surface. The array of modules is circumscribed by a continuous, belt-like perimeter assembly. Cross strapping, extending above, below or through the array, or some combination of above, below and through the array, secures a first position along the perimeter assembly to at least a second position along the perimeter assembly thereby stabilizing the array against wind uplift forces. The first and second positions may be on opposite sides on the array.

  1. An analysis of the trade-off between spatial and temporal resources for measurement-based quantum computation

    E-Print Network [OSTI]

    Jisho Miyazaki; Michal Hajdušek; Mio Murao

    2014-09-29T23:59:59.000Z

    In measurement-based quantum computation (MBQC), elementary quantum operations can be more parallelized than the quantum circuit model by employing a larger Hilbert space of graph states used as the resource. Thus MBQC can be regarded as a method of quantum computation where the temporal resource described by the depth of quantum operations can be reduced compared to the quantum circuit model by using the extra spatial resource described by graph states. To analyze the trade-off relationship of the spatial and temporal resources, we consider a method to obtain quantum circuit decompositions of general unitary transformations represented by MBQC on graph states with a certain underlying geometry called generalized flow. We present a method to translate any MBQC with generalized flow into quantum circuits without extra spatial resource. We also show an explicit way to unravel acausal gates that appear in the quantum circuit decomposition derived by a translation method presented in [V. Danos and E. Kashefi, Phys. Rev. A {\\bf 74}, 052310 (2006)] and that represent an effect of the reduction of the temporal resource in MBQC. Finally, by considering a way to deterministically simulate these acausal gates, we investigate a general framework to analyze the trade-off between the spacial and temporal resources for quantum computation.

  2. Stability and Complexity in

    E-Print Network [OSTI]

    Landweber, Laura

    and complexity of a commu- nity of interacting plants and animals, following the food web as a clue. Contrary in power. Stability and Complexity in Model Ecosystems played a key role in introducing nonlinear thinking, and current threats to biodiversity have made questions about the role of ecosystem complexity

  3. Stabilized chromium oxide film

    DOE Patents [OSTI]

    Garwin, Edward L. (Los Altos, CA); Nyaiesh, Ali R. (Palo Alto, CA)

    1988-01-01T23:59:59.000Z

    Stabilized air-oxidized chromium films deposited on high-power klystron ceramic windows and sleeves having a thickness between 20 and 150.ANG. are useful in lowering secondary electron emission yield and in avoiding multipactoring and window failure due to overheating. The ceramic substrate for the film is chosen from alumina, sapphire or beryllium oxide.

  4. Stabilized chromium oxide film

    DOE Patents [OSTI]

    Nyaiesh, A.R.; Garwin, E.L.

    1986-08-04T23:59:59.000Z

    Stabilized air-oxidized chromium films deposited on high-power klystron ceramic windows and sleeves having a thickness between 20 and 150A are useful in lowering secondary electron emission yield and in avoiding multipactoring and window failure due to overheating. The ceramic substrate for the film is chosen from alumina, sapphire or beryllium oxide.

  5. Tetraphenylborate Solids Stability Tests

    SciTech Connect (OSTI)

    Walker, D.D. [Westinghouse Savannah River Company, AIKEN, SC (United States); Edwards, T.B.

    1997-12-19T23:59:59.000Z

    Tetraphenylborate solids provide a potentially large source of benzene in the slurries produced in the In-Tank Precipitation process. The stability of the solids is an important consideration in the safety analysis of the process and we desire an understanding of the factors that influence the rate of conversion of the solids to benzene.

  6. INVESTIGATION OF SITE-SPECIFIC CHANGES WITHIN THE N-TERMINAL DOMAIN OF CALMODULIN AND THE RELATIONSHIP TO STRUCTURAL AND THERMAL STABILITY

    E-Print Network [OSTI]

    Martin, Talia Thresa

    2011-08-31T23:59:59.000Z

    The goal of this dissertation was to develop a method to assess how solution conditions affect a protein's stability, and a well-characterized model protein, was used to accomplish this objective. Generally, stabilizing ...

  7. Stability of Coupling Algorithms

    E-Print Network [OSTI]

    Akkasale, Abhineeth

    2012-07-16T23:59:59.000Z

    of Committee, K. B. Nakshatrala Committee Members, Steve Suh J. N. Reddy Head of Department, Dennis O?Neal May 2011 Major Subject: Mechanical Engineering iii ABSTRACT Stability of Coupling Algorithms. (May 2011) Abhineeth Akkasale, B.E., Bangalore... step. iv To Amma and Anna v ACKNOWLEDGMENTS First and foremost, I thank Dr. Kalyana B. Nakshatrala for being an incredible advisor and for his time and patience in constantly guiding me through my research. I am indebted to him for his guidance...

  8. Simplex stability Dhruv Mubayi

    E-Print Network [OSTI]

    Mubayi, Dhruv

    Simplex stability Dhruv Mubayi Reshma Ramadurai November 5, 2008 Abstract A d-simplex that contains no d-simplex. We prove that if |G| (1 - o(1)) n-1 k-1 , then there is a vertex x of G such that the Ai's form a d-simplex, and A contains an element of j=iAj for each i. This generalizes, in asymptotic

  9. Codeword Stabilized Quantum Codes

    E-Print Network [OSTI]

    Andrew Cross; Graeme Smith; John A. Smolin; Bei Zeng

    2007-09-27T23:59:59.000Z

    We present a unifying approach to quantum error correcting code design that encompasses additive (stabilizer) codes, as well as all known examples of nonadditive codes with good parameters. We use this framework to generate new codes with superior parameters to any previously known. In particular, we find ((10,18,3)) and ((10,20,3)) codes. We also show how to construct encoding circuits for all codes within our framework.

  10. Fiscal Year 2009 Revegetation Assessment

    SciTech Connect (OSTI)

    Michael Lewis

    2009-10-01T23:59:59.000Z

    This report summarizes the Fiscal Year 2009 Revegetation Assessment by Battelle Energy Alliance, LLC. This assessment was conducted to supplement documentation related to the Storm Water Pollution Prevention Plan for Construction Activities and to ensure that disturbed vegetation and soil at various locations are being restored. This report provides the following information for each site being monitored by the Idaho National Laboratory Environmental Support and Services: • Summary of each site • Assessment of vegetation status and site stabilization at each location • Recommendation(s) for each site.

  11. Fiscal Year 2010 Revegetation Assessment

    SciTech Connect (OSTI)

    Jenifer Nordstrom; Mike Lewis

    2010-11-01T23:59:59.000Z

    This report summarizes the Fiscal Year 2010 Revegetation Assessment by Battelle Energy Alliance, LLC. This assessment was conducted to supplement documentation related to the Storm Water Pollution Prevention Plan for Construction Activities and to ensure that disturbed vegetation and soil at various locations are being restored. This report provides the following information for each site being monitored by the Idaho National Laboratory Environmental Support and Services: • Summary of each site • Assessment of vegetation status and site stabilization at each location • Recommendation(s) for each site.

  12. Frequency, composition and stability of associations among individual largemouth bass

    E-Print Network [OSTI]

    Cooke, Steven J.

    bass (Micropterus salmoides) at diel, daily and seasonal scales. Ecology of Freshwater Fish 2007: 16 bass. The temporal and spatial proximity of each fish relative to the other 19 individuals was assessedFrequency, composition and stability of associations among individual largemouth bass (Micropterus

  13. Validation of the new mixture design and testing protocol for lime stabilization 

    E-Print Network [OSTI]

    Yusuf, Fateh Ul Anam Muhammad Shafee

    2001-01-01T23:59:59.000Z

    and testing protocol is presented for lime stabilized subgrades. Comparison of field test data and laboratory test data shows that laboratory design test properties were achieved in the field. These properties are used in a mechanistic analysis to assess...

  14. Molecular Structure and Stability of Dissolved Lithium Polysulfide Species

    SciTech Connect (OSTI)

    Vijayakumar, M.; Govind, Niranjan; Walter, Eric D.; Burton, Sarah D.; Shukla, Anil K.; Devaraj, Arun; Xiao, Jie; Liu, Jun; Wang, Chong M.; Karim, Ayman M.; Thevuthasan, Suntharampillai

    2014-03-24T23:59:59.000Z

    Ability to predict the solubility and stability of lithium polysulfide is vital in realizing longer lasting lithium-sulfur batteries. Herein we report a combined computational and experimental spectroscopic analysis to understand the dissolution mechanism of lithium polysulfide species in an aprotic solvent medium. Multinuclear NMR and sulfur K-edge X-ray absorption (XAS) analysis reveals that the lithium exchange between polysulfide species and solvent molecule constitutes the first step in the dissolution process. Lithium exchange leads to de-lithiated polysulfide ions which subsequently forms highly reactive free radicals through disproportion reaction. The energy required for the disproportion and possible dimer formation reactions of the polysulfide species are analyzed using density functional theory (DFT) calculations. We validate our calculations with variable temperature electron spin resonance (ESR) measurements. Based on these findings, we discuss approaches to optimize the electrolyte in order to control the polysulfide solubility. The energy required for the disproportion and possible dimer formation reactions of the polysulfide species are analyzed using density functional theory (DFT) calculations. We validate our calculations with variable temperature electron spin resonance (ESR) measurements. Based on these findings, we discuss approaches to optimize the electrolyte in order to control the polysulfide solubility.

  15. Chassis stabilization system

    DOE Patents [OSTI]

    Claxton, Gerald L. (Fresno, CA)

    1999-01-01T23:59:59.000Z

    A stabilizing suspension system is provided for vehicles carrying telescopic booms or aerial work platforms having a fixed axle and a oscillating axle. Hydraulic cylinders are connected to each end of the oscillating axle, each cylinder being capable of extending and retracting. An off level sensor senses the angle of tilt of the chassis in both left and right directions and, when a predetermined threshold of tilt has been detected, the hydraulic cylinder on the downhill side of the chassis is locked against retracting, but is free to move in the downhill direction to allow the downhill wheel to remain in contact with the ground.

  16. Comparing resolved-sideband cooling and measurement-based feedback cooling on an equal footing: analytical results in the regime of ground-state cooling

    E-Print Network [OSTI]

    Kurt Jacobs; Hendra I. Nurdin; Frederick W. Strauch; Matthew James

    2015-03-19T23:59:59.000Z

    We show that in the regime of ground-state cooling, simple expressions can be derived for the performance of resolved-sideband cooling --- an example of coherent feedback control --- and optimal linear measurement-based feedback cooling for a harmonic oscillator. These results are valid to leading order in the small parameters that define this regime. They provide insight into the origins of the limitations of coherent and measurement-based feedback for linear systems, and the relationship between them. These limitations are not fundamental bounds imposed by quantum mechanics, but are due to the fact that both cooling methods are restricted to use only a linear interaction with the resonator. We compare the performance of the two methods on an equal footing --- that is, for the same interaction strength --- and confirm that coherent feedback is able to make much better use of the linear interaction than measurement-based feedback. We find that this performance gap is caused not by the back-action noise of the measurement but by the projection noise. We also obtain simple expressions for the maximal cooling that can be obtained by both methods in this regime, optimized over the interaction strength.

  17. IMPROVED ROOF STABILIZATION TECHNOLOGIES

    SciTech Connect (OSTI)

    M.A. Ebadian, Ph.D.

    1999-01-01T23:59:59.000Z

    Many U.S. Department of Energy (DOE) remediation sites have performed roof repair and roof replacement to stabilize facilities prior to performing deactivation and decommissioning (D&D) activities. This project will review the decision criteria used by these DOE sites, along with the type of repair system used for each different roof type. Based on this information, along with that compiled from roofing experts, a decision-making tool will be generated to aid in selecting the proper roof repair systems. Where appropriate, innovative technologies will be reviewed and applied to the decision-making tool to determine their applicability. Based on the results, applied research and development will be conducted to develop a method to repair these existing roofing systems, while providing protection for the D and D worker in a cost-efficient manner.

  18. Laser controlled flame stabilization

    DOE Patents [OSTI]

    Early, James W. (Los Alamos, NM); Thomas, Matthew E. (Huntsville, AL)

    2001-01-01T23:59:59.000Z

    A method and apparatus is provided for initiating and stabilizing fuel combustion in applications such as gas turbine electrical power generating engines and jet turbine engines where it is desired to burn lean fuel/air mixtures which produce lower amounts of NO.sub.x. A laser induced spark is propagated at a distance from the fuel nozzle with the laser ignitor being remotely located from the high temperature environment of the combustion chamber. A laser initiating spark generated by focusing high peak power laser light to a sufficiently tight laser spot within the fuel to cause the ionization of air and fuel into a plasma is unobtrusive to the flow dynamics of the combustion chamber of a fuel injector, thereby facilitating whatever advantage can be taken of flow dynamics in the design of the fuel injector.

  19. AC system stability analysis and assessment for Shipboard Power Systems 

    E-Print Network [OSTI]

    Qi, Li

    2006-04-12T23:59:59.000Z

    The electric power systems in U.S. Navy ships supply energy to sophisticated systems for weapons, communications, navigation and operation. The reliability and survivability of a Shipboard Power System (SPS) are critical ...

  20. assessing thermal stability: Topics by E-print Network

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

    Websites Summary: Funding: 75,000 Term: July 2002 - June 2003 PIER Subject Area: Renewable Energy Technologies 12;Page i-of-concept energy research. PIER funding efforts...

  1. Real-Time Security Assessment of Angle Stability Using Synchrophasors

    E-Print Network [OSTI]

    Kingsmore (Duke Energy) · Kip Morrison (BCTC) · Mahendra Patel (PJM) and · Suketu Shah (ITC) · Jianzhong Tong (PJM) · Bob Wilson (WAPA). #12;ii Executive Summary This project examines the use of Phasor

  2. DOE/EA-0978 ENVIRONMENTAL ASSESSMENT SLUDGE STABILIZATION AT

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

    of chemistry and Physics, Robert C. Weast, Ph.D., 70th Ed., 1989-1990, CRC Press, Inc., Boca Raton, Florida. square 0.39 square miles square kilometers centimeters G-3 October...

  3. AC system stability analysis and assessment for Shipboard Power Systems

    E-Print Network [OSTI]

    Qi, Li

    2006-04-12T23:59:59.000Z

    The electric power systems in U.S. Navy ships supply energy to sophisticated systems for weapons, communications, navigation and operation. The reliability and survivability of a Shipboard Power System (SPS) are critical to the mission of a Navy...

  4. Improved Offshore Wind Resource Assessment in Global Climate Stabilization Scenarios

    SciTech Connect (OSTI)

    Arent, D.; Sullivan, P.; Heimiller, D.; Lopez, A.; Eurek, K.; Badger, J.; Jorgensen, H. E.; Kelly, M.; Clarke, L.; Luckow, P.

    2012-10-01T23:59:59.000Z

    This paper introduces a technique for digesting geospatial wind-speed data into areally defined -- country-level, in this case -- wind resource supply curves. We combined gridded wind-vector data for ocean areas with bathymetry maps, country exclusive economic zones, wind turbine power curves, and other datasets and relevant parameters to build supply curves that estimate a country's offshore wind resource defined by resource quality, depth, and distance-from-shore. We include a single set of supply curves -- for a particular assumption set -- and study some implications of including it in a global energy model. We also discuss the importance of downscaling gridded wind vector data to capturing the full resource potential, especially over land areas with complex terrain. This paper includes motivation and background for a statistical downscaling methodology to account for terrain effects with a low computational burden. Finally, we use this forum to sketch a framework for building synthetic electric networks to estimate transmission accessibility of renewable resource sites in remote areas.

  5. Stabilized radio-frequency quadrupole

    DOE Patents [OSTI]

    Lancaster, H.D.; Fugitt, J.A.; Howard, D.R.

    1982-09-29T23:59:59.000Z

    A long-vane stabilized radio frequency resonator for accelerating charged particles and including means defining a radio frequency resonator cavity, a plurality of long vanes mounted in the defining means for dividing the cavity into sections, and means interconnecting opposing ones of the plurality of vanes for stabilizing the resonator.

  6. Project Management Plan Solution Stabilization

    SciTech Connect (OSTI)

    SATO, P.K.

    1999-08-31T23:59:59.000Z

    This plan presents the overall objectives, description, justification and planning for the Plutonium Finishing Plant (PFP) Solutions Stabilization subproject. The intent of this plan is to describe how this project will be managed and integrated with other facility stabilization and deactivation activities. This plan supplements the overall integrated plan presented in the Integrated Project Management Plan (IPMP) for the Plutonium Finishing Plant Stabilization and Deactivation Project, HNF-3617. This project plan is the top-level definitive project management document for the PFP Solution Stabilization subproject. It specifies the technical, schedule, requirements and the cost baselines to manage the execution of the Solution Stabilization subproject. Any deviations to the document must be authorized through the appropriate change control process.

  7. Phase stabilities at a glance: Stability diagrams of nickel dipnictides

    SciTech Connect (OSTI)

    Bachhuber, F. [University of Regensburg, Institute of Inorganic Chemistry, Universitätsstr. 31, 93040 Regensburg (Germany) [University of Regensburg, Institute of Inorganic Chemistry, Universitätsstr. 31, 93040 Regensburg (Germany); School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland (New Zealand); Rothballer, J.; Weihrich, R., E-mail: richard.weihrich@chemie.uni-r.de [University of Regensburg, Institute of Inorganic Chemistry, Universitätsstr. 31, 93040 Regensburg (Germany); Söhnel, T. [School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland (New Zealand) [School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland (New Zealand); Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study, Massey University Auckland, Auckland (New Zealand)

    2013-12-07T23:59:59.000Z

    In the course of the recent advances in chemical structure prediction, a straightforward type of diagram to evaluate phase stabilities is presented based on an expedient example. Crystal structures and energetic stabilities of dipnictides NiPn{sub 2} (Pn = N, P, As, Sb, Bi) are systematically investigated by first principles calculations within the framework of density functional theory using the generalized gradient approximation to treat exchange and correlation. These dipnictides show remarkable polymorphism that is not yet understood systematically and offers room for the discovery of new phases. Relationships between the concerned structures including the marcasite, the pyrite, the arsenopyrite/CoSb{sub 2}, and the NiAs{sub 2} types are highlighted by means of common structural fragments. Electronic stabilities of experimentally known and related AB{sub 2} structure types are presented graphically in so-called stability diagrams. Additionally, competing binary phases are taken into consideration in the diagrams to evaluate the stabilities of the title compounds with respect to decomposition. The main purpose of the stability diagrams is the introduction of an image that enables the estimation of phase stabilities at a single glance. Beyond that, some of the energetically favored structure types can be identified as potential new phases.

  8. Octonions and vacuum stability

    E-Print Network [OSTI]

    Mikhail V. Gorbatenko

    2005-09-22T23:59:59.000Z

    The paper addresses one of nontrivial octonion related facts. According to paper gr-qc/0409095, the most stable space-time state is the one described by real Dirac matrices in 11-dimensional space of signature 1(-)&10(+). The internal subspace is 7-dimensional, and its stability is due to a high ``zero'' energy packing density when using an oblique-angled basis from fundamental vectors of lattice E_8 for the spinor degrees of freedom. The nontrivial fact consists in the following: Dirac symbols with octonion matrix elements can be used to describe states of the space of internal degrees of freedom if and only if the space corresponds either to stable vacuum states or states close to the just mentioned ones. The coincidence of the internal space dimension and signature for absolutely different and independent approaches to the consideration of this issue seems to predetermine the internal space vacuum properties and the apparatus, which is able to constitute the basis of the unified interaction theory.

  9. Assessment Documents

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

    Assessments Operational Awareness Record, Waste Treatment and Immobilization Plant - March 2015

    The Office of Nuclear Safety and Environmental...

  10. Geometry of Weak Stability Boundaries

    E-Print Network [OSTI]

    Edward Belbruno; Marian Gidea; Francesco Topputo

    2012-04-06T23:59:59.000Z

    The notion of a weak stability boundary has been successfully used to design low energy trajectories from the Earth to the Moon. The structure of this boundary has been investigated in a number of studies, where partial results have been obtained. We propose a generalization of the weak stability boundary. We prove analytically that, in the context of the planar circular restricted three-body problem, under certain conditions on the mass ratio of the primaries and on the energy, the weak stability boundary about the heavier primary coincides with a branch of the global stable manifold of the Lyapunov orbit about one of the Lagrange points.

  11. Plutonium stabilization and packaging system

    SciTech Connect (OSTI)

    NONE

    1996-05-01T23:59:59.000Z

    This document describes the functional design of the Plutonium Stabilization and Packaging System (Pu SPS). The objective of this system is to stabilize and package plutonium metals and oxides of greater than 50% wt, as well as other selected isotopes, in accordance with the requirements of the DOE standard for safe storage of these materials for 50 years. This system will support completion of stabilization and packaging campaigns of the inventory at a number of affected sites before the year 2002. The package will be standard for all sites and will provide a minimum of two uncontaminated, organics free confinement barriers for the packaged material.

  12. High voltage stability performance of a gamma ray detection device

    SciTech Connect (OSTI)

    Abdullah, Nor Arymaswati; Lombigit, Lojius; Rahman, Nur Aira Abd [Technical Support Division, Malaysian Nuclear Agency, 43000 Kajang, Selangor (Malaysia)

    2014-02-12T23:59:59.000Z

    An industrial grade digital radiation survey meter device is currently being developed at Malaysian Nuclear Agency. This device used a cylindrical type Geiger Mueller (GM) which acts as a detector. GM detector operates at relatively high direct current voltages depend on the type of GM tube. This thin/thick walled cylindrical type of GM tube operates at 450-650 volts range. Proper value and stability performance of high voltage are important parameters to ensure that this device give a reliable radiation dose measurement. This paper will present an assessment of the stability and performance of the high voltage supply for radiation detector. The assessment is performed using System Identification tools box in MATLAB and mathematical statistics.

  13. Slope stability of geosynthetic clay liner test plots

    SciTech Connect (OSTI)

    Daniel, D.E. [Univ. of Illinois, Urbana, IL (United States); Koerner, R.M. [Drexel Univ., Philadelphia, PA (United States). Geosynthetic Research Inst.; Bonaparte, R. [GeoSyntec Consultants, Atlanta, GA (United States); Landreth, R.E. [Landreth, (Robert E.), West Chester, OH (United States); Carson, D.A. [Environmental Protection Agency, Cincinnati, OH (United States); Scranton, H.B. [Haley and Aldrich, Boston, MA (United States)

    1998-07-01T23:59:59.000Z

    Fourteen full-scale field test plots containing five types of geosynthetic clay liners (GCLs) were constructed on 2H:1V and 3H:1V slopes for the purpose of assessing slope stability. The test plots were designed to simulate typical final cover systems for landfills. Slides occurred in two of the 2H:1V test plots along interfaces between textured geomembranes and the woven geotextile components of internally reinforced GCLs. One additional slide occurred within the unreinforced GCL component of a 2H:1V test plot, when the GCL unexpectedly became hydrated. All 3H:1V slopes have remained stable. Results of laboratory direct shear tests compared favorably with field observations, providing support for the current design procedures that engineers are using for assessing the stability of slopes containing GCLs.

  14. Consequence Assessment

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

    1997-08-21T23:59:59.000Z

    This volume focuses on the process of performing timely initial assessments necessary to support critical first decisions and the continuous process of refining those initial assessments as more information and resources become available. Canceled by DOE G 151.1-4.

  15. Irradiation Stability of Carbon Nanotubes 

    E-Print Network [OSTI]

    Aitkaliyeva, Assel

    2010-01-14T23:59:59.000Z

    Ion irradiation of carbon nanotubes is a tool that can be used to achieve modification of the structure. Irradiation stability of carbon nanotubes was studied by ion and electron bombardment of the samples. Different ion ...

  16. Necessary conditions for stabilization agreements

    E-Print Network [OSTI]

    Yang, Zili.; Jacoby, Henry D.

    The Climate Convention calls for stabilization of atmospheric concentrations of greenhouse gases. This paper considers the issues that must be faced in formulating a plan to meet any such target, using a proposed CO2 level ...

  17. Quantum stabilizer codes and beyond

    E-Print Network [OSTI]

    Sarvepalli, Pradeep Kiran

    2008-10-10T23:59:59.000Z

    QUANTUM STABILIZER CODES AND BEYOND A Dissertation by PRADEEP KIRAN SARVEPALLI 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 August 2008 Major... Subject: Computer Science QUANTUM STABILIZER CODES AND BEYOND A Dissertation by PRADEEP KIRAN SARVEPALLI 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...

  18. Risk Assessment

    Broader source: Energy.gov [DOE]

    A set of issues that state and local governments should carefully consider, with the goal of helping them assess and anticipate solutions for some worst case or unfortunate case scenarios as they...

  19. Environmental Assessment

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

    surface and the lower part of the atmosphere; this phenomenon is called the greenhouse effect. U.S. Department of Energy DOEEA-1728D Draft Environmental Assessment 32 June...

  20. Material Stabilization Project Management Plan

    SciTech Connect (OSTI)

    SPEER, D.R.

    1999-09-01T23:59:59.000Z

    This plan presents the overall objectives, description, justification and planning for the plutonium Finishing Plant (PFP) Materials Stabilization project. The intent of this plan is to describe how this project will be managed and integrated with other facility stabilization and deactivation activities. This plan supplements the overall integrated plan presented in the Plutonium Finishing Plant Integrated Project Management Plan (IPMP), HNF-3617, Rev. 0. This is the top-level definitive project management document that specifies the technical (work scope), schedule, and cost baselines to manager the execution of this project. It describes the organizational approach and roles/responsibilities to be implemented to execute the project. This plan is under configuration management and any deviations must be authorized by appropriate change control action. Materials stabilization is designated the responsibility to open and stabilize containers of plutonium metal, oxides, alloys, compounds, and sources. Each of these items is at least 30 weight percent plutonium/uranium. The output of this project will be containers of materials in a safe and stable form suitable for storage pending final packaging and/or transportation offsite. The corrosion products along with oxides and compounds will be stabilized via muffle furnaces to reduce the materials to high fired oxides.

  1. UNDERSTANDING FORCES THAT CONTRIBUTE TO PROTEIN STABILITY: APPLICATION FOR INCREASING PROTEIN STABILITY

    E-Print Network [OSTI]

    Fu, Hailong

    2010-07-14T23:59:59.000Z

    for increasing protein stability. Finally, using a combination of eight previously identified stabilizing mutations; we successfully designed two RNase Sa variants (7S, 8S) that have both much higher Tms and conformational stabilities than wild-type protein over...

  2. Integrated Environmental Assessment Part III: Exposure Assessment

    E-Print Network [OSTI]

    McKone, Thomas E.; Small, Mitchell J.

    2006-01-01T23:59:59.000Z

    issues such as life cycle assessment (LCA) fosters the needlife-cycle impact assessment (LCIA) process within in LCA is

  3. Quantum stabilizer codes and beyond

    E-Print Network [OSTI]

    Pradeep Kiran Sarvepalli

    2008-10-14T23:59:59.000Z

    The importance of quantum error correction in paving the way to build a practical quantum computer is no longer in doubt. This dissertation makes a threefold contribution to the mathematical theory of quantum error-correcting codes. Firstly, it extends the framework of an important class of quantum codes -- nonbinary stabilizer codes. It clarifies the connections of stabilizer codes to classical codes over quadratic extension fields, provides many new constructions of quantum codes, and develops further the theory of optimal quantum codes and punctured quantum codes. Secondly, it contributes to the theory of operator quantum error correcting codes also called as subsystem codes. These codes are expected to have efficient error recovery schemes than stabilizer codes. This dissertation develops a framework for study and analysis of subsystem codes using character theoretic methods. In particular, this work establishes a close link between subsystem codes and classical codes showing that the subsystem codes can be constructed from arbitrary classical codes. Thirdly, it seeks to exploit the knowledge of noise to design efficient quantum codes and considers more realistic channels than the commonly studied depolarizing channel. It gives systematic constructions of asymmetric quantum stabilizer codes that exploit the asymmetry of errors in certain quantum channels.

  4. Stabilization of Layered Metal Oxides

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

    stabilizing cations and anions (NH 4 ) 3 AlF 6 ; NH 4 PF 6 ; NH 4 BF 4 in water, methanol, etc molarity of solutions 2.5 x 10 -3 M pH 6.0 - 6.5 Composition used:...

  5. Stability of Molten Core Materials

    SciTech Connect (OSTI)

    Layne Pincock; Wendell Hintze

    2013-01-01T23:59:59.000Z

    The purpose of this report is to document a literature and data search for data and information pertaining to the stability of nuclear reactor molten core materials. This includes data and analysis from TMI-2 fuel and INL’s LOFT (Loss of Fluid Test) reactor project and other sources.

  6. Landfill stabilization focus area: Technology summary

    SciTech Connect (OSTI)

    NONE

    1995-06-01T23:59:59.000Z

    Landfills within the DOE Complex as of 1990 are estimated to contain 3 million cubic meters of buried waste. The DOE facilities where the waste is predominantly located are at Hanford, the Savannah River Site (SRS), the Idaho National Engineering Laboratory (INEL), the Los Alamos National Laboratory (LANL), the Oak Ridge Reservation (ORR), the Nevada Test Site (NTS), and the Rocky Flats Plant (RFP). Landfills include buried waste, whether on pads or in trenches, sumps, ponds, pits, cribs, heaps and piles, auger holes, caissons, and sanitary landfills. Approximately half of all DOE buried waste was disposed of before 1970. Disposal regulations at that time permitted the commingling of various types of waste (i.e., transuranic, low-level radioactive, hazardous). As a result, much of the buried waste throughout the DOE Complex is presently believed to be contaminated with both hazardous and radioactive materials. DOE buried waste typically includes transuranic-contaminated radioactive waste (TRU), low-level radioactive waste (LLW), hazardous waste per 40 CFR 26 1, greater-than-class-C waste per CFR 61 55 (GTCC), mixed TRU waste, and mixed LLW. The mission of the Landfill Stabilization Focus Area is to develop, demonstrate, and deliver safer,more cost-effective and efficient technologies which satisfy DOE site needs for the remediation and management of landfills. The LSFA is structured into five technology areas to meet the landfill remediation and management needs across the DOE complex. These technology areas are: assessment, retrieval, treatment, containment, and stabilization. Technical tasks in each of these areas are reviewed.

  7. Soil Stabilization Methods with Potential for Application at the Nevada National Security Site: A Literature Review

    SciTech Connect (OSTI)

    Shillito, Rose [DRI] [DRI; Fenstermaker, Lynn [DRI] [DRI

    2014-01-01T23:59:59.000Z

    Nuclear testing at the Nevada National Security Site (NNSS) has resulted in large areas of surficial radionuclide-contaminated soils. Much of the radionuclide contamination is found at or near the soil surface, and due to the dry climate setting, and the long half-life of radioactive isotopes, soil erosion poses a long-term health risk at the NNSS. The objective of this literature review is to present a survey of current stabilization methods used for minimizing soil erosion, both by water and wind. The review focuses on in situ uses of fundamental chemical and physical mechanisms for soil stabilization. A basic overview of the physical and chemical properties of soil is also presented to provide a basis for assessing stabilization methods. Some criteria for stabilization evaluation are identified based on previous studies at the NNSS. Although no specific recommendations are presented as no stabilization method, alone or in combination, will be appropriate in all circumstances, discussions of past and current stabilization procedures and specific soil tests that may aid in current or future soil stabilization activities at the NNSS are presented. However, not all Soils Corrective Action Sites (CASs) or Corrective Action Units (CAUs) will require stabilization of surficial radionuclide-contaminated soils. Each Soils CAS or CAU should be evaluated for site-specific conditions to determine if soil stabilization is necessary or practical for a given specific site closure alternative. If stabilization is necessary, then a determination will be made as to which stabilization technique is the most appropriate for that specific site.

  8. Stability of Gas-Fluidized Beds

    E-Print Network [OSTI]

    Mandich, Kevin Matthew

    R. The mechanics of fluidised beds: Part I: The stability ofR. The mechanics of fluidised beds: Part I: The stability ofof an Inclined Fluidised Bed. Kagaku Kogaku Ronbunshu, 15 (

  9. Factors influencing antioxidant phytochemical stability of teas

    E-Print Network [OSTI]

    Kim, Youngmok

    2009-05-15T23:59:59.000Z

    polyphenolic profile of teas. To present fundamental information of phytochemical stability during tea storage, studies to determine the impacts of tea processing, different packaging materials, and various storage conditions on the phytochemical stability were...

  10. Glass composition development for stabilization of New York Harbor sediment

    SciTech Connect (OSTI)

    Marra, J.C.

    1996-01-01T23:59:59.000Z

    Sediment from the New York Harbor must be periodically dredged in order to maintain adequate water depths for navigation. In the past, disposal of the sediment in the ocean was routine. Recently, the sediment was found to contain organics and heavy metals which may prevent direct ocean disposal. Methods are currently being evaluated for decontamination and disposal of the sediment. Vitrification is a technology being investigated. As part of this effort the appropriate glass formulations for stabilization of the sediment were developed. Crucible melting tests were used to identify and `optimized` glass composition for stabilization of the harbor sediment. Criteria to assess the suitability of the glass compositions included: waste loading, homogeneity, raw material cost and melt viscosity.

  11. TILT STABILITY, UNIFORM QUADRATIC GROWTH, AND STRONG ...

    E-Print Network [OSTI]

    2012-05-08T23:59:59.000Z

    Tilt stability, variational analysis, subdifferentials, quadratic growth, strong metric .... Some convex analysis. ..... Example 3.5 (Failure of subdifferential continuity).

  12. Stabilization of Platinum Nanoparticle Electrocatalysts for Oxygen...

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

    Platinum Nanoparticle Electrocatalysts for Oxygen Reduction Using Poly(diallyldimethylammonium chloride). Stabilization of Platinum Nanoparticle Electrocatalysts for Oxygen...

  13. Availability Assessment of SunOS/Solaris Unix Systems based on Syslogd and wtmpx log files: A case study

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Availability Assessment of SunOS/Solaris Unix Systems based on Syslogd and wtmpx log files: A case 4 -- France Mohamed.Kaaniche@laas.fr Abstract This paper presents a measurement-based availability, downtimes and availability based on the identification of failures that caused total service loss. Data

  14. A Stability of LCLS Linac Modulators

    SciTech Connect (OSTI)

    Decker, F.-J.; Krasnykh, A.; Morris, B.; Nguyen, M.; /SLAC

    2012-06-13T23:59:59.000Z

    Information concerning to a stability of LCLS RF linac modulators is allocated in this paper. In general a 'pulse-to-pulse' modulator stability (and RF phase as well) is acceptable for the LCLS commission and FEL programs. Further modulator stability improvements are possible and approaches are discussed based on our experimental results.

  15. Trading Away Financial Stability in Colombia

    E-Print Network [OSTI]

    Tufts University

    Trading Away Financial Stability in Colombia: Capital Controls and the US-Colombia Trade Agreement@bu.edu #12;Trading Away Financial Stability in Colombia: Capital Controls and the US-Colombia Trade Agreement SerieBrief # 66 | Abril 2011 Trading Away Financial Stability in Colombia: Capital Controls and the US-Colombia

  16. STABILITY CONDITIONS IN PIECEWISE SMOOTH DYNAMICAL SYSTEMS

    E-Print Network [OSTI]

    Herrmann, Samuel

    -fold singularities. More specifically, we are interested in discussing stability problems of such systems around of those of Asymptotic and Lya- punov stability respectively. For technical reasons they will be presented in Subsection 2.6. Our main results exhibit conditions for the A- and L- stability of a two-fold singularity

  17. Stability diagram of colliding beams

    E-Print Network [OSTI]

    Buffat, X; Mounet, N; Pieloni, T

    2014-01-01T23:59:59.000Z

    The effect of the beam-beam interactions on the stability of impedance mode is discussed. The detuning is evaluated by the means of single particle tracking in arbitrarily complex collision configurations, including lattice non-linearities, and used to numerically evaluate the dispersion integral. This approach also allows the effect of non-Gaussian distributions to be considered. Distributions modified by the action of external noise are discussed.

  18. Stability-Constrained Optimal Power Flow and Its Application to Pricing Power System Stabilizers

    E-Print Network [OSTI]

    Cańizares, Claudio A.

    1 Stability-Constrained Optimal Power Flow and Its Application to Pricing Power System Stabilizers locational marginal prices. A power system stabilizer (PSS) is then introduced in the test system Terms-- Angle stability, power system oscillations, elec- tricity markets, optimal power flow

  19. Nonbinary Codeword Stabilized Quantum Codes

    E-Print Network [OSTI]

    Xie Chen; Bei Zeng; Isaac L. Chuang

    2008-08-22T23:59:59.000Z

    The codeword stabilized (CWS) quantum codes formalism presents a unifying approach to both additive and nonadditive quantum error-correcting codes (arXiv:0708.1021 [quant-ph]), but only for binary states. Here we generalize the CWS framework to the nonbinary case (of both prime and nonprime dimension) and map the search for nonbinary quantum codes to a corresponding search problem for classical nonbinary codes with specific error patterns. We show that while the additivity properties of nonbinary CWS codes are similar to the binary case, the structural properties of the nonbinary codes differ substantially from the binary case, even for prime dimensions. In particular, we identify specific structure patterns of stabilizer groups, based on which efficient constructions might be possible for codes that encode more dimensions than any stabilizer codes of the same length and distance; similar methods cannot be applied in the binary case. Understanding of these structural properties can help prune the search space and facilitate the identification of good nonbinary CWS codes.

  20. Stabilization

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our Instagram Secretary900 Special Report:Spotlight: Bryantis here April and Error

  1. Bounds on Effective Hamiltonians for Stabilizer Codes

    E-Print Network [OSTI]

    Stephen S. Bullock; Dianne P. O'Leary

    2008-02-05T23:59:59.000Z

    This manuscript introduces various notions of k-locality of stabilizer codes inherited from the associated stabilizer groups. A choice of generators for the group leads to a Hamiltonian with the code in its groundspace, while a Hamiltonian holding the code in its groundspace might be called effective if its locality is less than that of a natural choice of generators (or any choice). This paper establishes some conditions under which effective Hamiltonians for stabilizer codes do not exist. Our results simplify in the cases of Calderbank-Shor-Steane stabilizer codes and topologically-ordered stabilizer codes arising from surface cellulations.

  2. Code constructions and code families for nonbinary quantum stabilizer code

    E-Print Network [OSTI]

    Ketkar, Avanti Ulhas

    2005-11-01T23:59:59.000Z

    Stabilizer codes form a special class of quantum error correcting codes. Nonbinary quantum stabilizer codes are studied in this thesis. A lot of work on binary quantum stabilizer codes has been done. Nonbinary stabilizer codes have received much...

  3. Stability of Graphene doping with MoO_3 and I_2

    E-Print Network [OSTI]

    D’Arsié, Lorenzo; Esconjauregui, Santiago; Weatherup, Robert; Guo, Yuzheng; Bhardwaj, Sunil; Centeno, Alba; Zurutuza, Amaia; Cepek, Cinzia; Robertson, John

    2014-09-08T23:59:59.000Z

    We dope graphene by evaporation of MoO_3 or by solution-deposition of I_2 and assess the doping stability for its use as transparent electrodes. Electrical measurements show that both dopants increase the graphene sheet conductivity and find that Mo...

  4. Turn Scanning 133 From: Methods in Molecular Biology, vol. 168: Protein Structure, Stability, and Folding

    E-Print Network [OSTI]

    Ponder, Jay

    Turn Scanning 133 133 From: Methods in Molecular Biology, vol. 168: Protein Structure, Stability, and Folding Edited by: K. P. Murphy © Humana Press Inc., Totowa, NJ 7 Turn Scanning: Experimental extended structures. Here we present the use of turn scanning as an experimental method for assessing

  5. Stability Charts for Uniform Slopes Radoslaw L. Michalowski, F.ASCE1

    E-Print Network [OSTI]

    Michalowski, Radoslaw L.

    . Charts are presented for slopes subjected to pore water pressure and also for those exposed to seismic analysis; Limit states; Failures; Graphic methods. Introduction Stability assessments of earth slopes require limit state calcula- tions, which differ significantly from those in structural engineer- ing

  6. Assessment Documents

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA NewslettersPartnership of theArctic Energy Summit26 Assessment

  7. Environmental Assessment

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8, 2000ConsumptionInnovationEnvironment,682 Environmental Assessment

  8. Environmental Assessment

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8, 2000ConsumptionInnovationEnvironment,682 Environmental Assessment 728D

  9. Environmental Assessment

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8, 2000ConsumptionInnovationEnvironment,682 Environmental Assessment

  10. Performance Assessment

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

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

  11. Ecological Risk Assessments

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

    Ecological Risk Assessments Ecological Risk Assessments Ecological risk assessment is the appraisal of potential adverse effects of exposure to contaminants on plants and animals....

  12. Tritium systems test assembly stabilization

    SciTech Connect (OSTI)

    Jasen, W. G. (William G.); Michelotti, R. A. (Roy A.); Anast, K. R. (Kurt R.); Tesch, Charles

    2004-01-01T23:59:59.000Z

    The Tritium Systems Test Assembly (TSTA) was a facility dedicated to tritium technology Research and Development (R&D) primarily for future fusion power reactors. The facility was conceived in mid 1970's, operations commenced in early 1980's, stabilization and deactivation began in 2000 and were completed in 2003. The facility will remain in a Surveillance and Maintenance (S&M) mode until the Department of Energy (DOE) funds demolition of the facility, tentatively in 2009. A safe and stable end state was achieved by the TSTA Facility Stabilization Project (TFSP) in anticipation of long term S&M. At the start of the stabilization project, with an inventory of approximately 140 grams of tritium, the facility was designated a Hazard Category (HC) 2 Non-Reactor Nuclear facility as defined by US Department of Energy standard DOE-STD-1027-92 (1997). The TSTA facility comprises a laboratory area, supporting rooms, offices and associated laboratory space that included more than 20 major tritium handling systems. The project's focus was to reduce the tritium inventory by removing bulk tritium, tritiated water wastes, and tritium-contaminated high-inventory components. Any equipment that remained in the facility was stabilized in place. All of the gloveboxes and piping were rendered inoperative and vented to atmosphere. All equipment, and inventoried tritium contamination, remaining in the facility was left in a safe-and-stable state. The project used the End Points process as defined by the DOE Office of Environmental Management (web page http://www.em.doe.- gov/deact/epman.htmtlo) document and define the end state required for the stabilization of TSTA Facility. The End Points process added structure that was beneficial through virtually all phases of the project. At completion of the facility stabilization project the residual tritium inventory was approximately 3,000 curies, considerably less than the 1.6-gram threshold for a HC 3 facility. TSTA is now designated as a Radiological Facility. Innovative approaches were employed for characterization and removal of legacy wastes and high inventory components. Major accomplishments included: (1) Reduction of tritium inventory, elimination of chemical hazards, and identification and posting of remaining hazards. (2) Removal of legacy wastes. (3) Transferred equipment for reuse in other DOE projects, including some at other DOE facilities. (4) Transferred facility in a safe and stable condition to the S&M organization. The project successfully completed all project goals and the TSTA facility was transferred into S&M on August 1,2003. This project demonstrates the benefit of radiological inventory reduction and the removal of legacy wastes to achieve a safe and stable end state that protects workers and the environment pending eventual demolition of the facility.

  13. Assessor Training Assessment Techniques

    E-Print Network [OSTI]

    NVLAP Assessor Training Assessment Techniques: Communication Skills and Conducting an Assessment listener ·Knowledgeable Assessor Training 2009: Assessment Techniques: Communication Skills & Conducting, truthful, sincere, discrete · Diplomatic · Decisive · Selfreliant Assessor Training 2009: Assessment

  14. Flibe assessments.

    SciTech Connect (OSTI)

    Sze, D. K.; McCarthy, K.; Sawan, M.; Tillack, M.; Ying, A.; Zinkle, S.

    2000-11-15T23:59:59.000Z

    An assessment of the issues on using flibe for fusion applications has been made. It is concluded that sufficient tritium breeding can be achieved for a flibe blanket, especially if a few cm of Be is include in the blanket design. A key issue is the control of the transmutation products such as TF and F{sub 2}. A REDOX (Reducing-Oxidation) reaction has to be demonstrated which is compatible to the blanket design. Also, MHD may have strong impact on heat transfer if the flow is perpendicular to the magnetic field. The issues associated with the REDOX reaction and the MHD issues have to be resolved by both experimental program and numerical solutions.

  15. Structural stability of the Weeks Island oil repository

    SciTech Connect (OSTI)

    Preece, D.S.; Ehgartner, B.L.

    1994-06-01T23:59:59.000Z

    A 3-D finite element analysis was performed to evaluate the stability of the SPR upper and lower oil storage levels at Weeks Island. The mechanical analysis predicted stresses and strains from which pillar stability was inferred using a fracture criterion developed from previous testing of Weeks Island salt. This analysis simulated the sequential mining of the two levels and subsequent oil fill of the mine. The predicted subsidence rates compare well to those measured over the past few years. Predicted failure mechanisms agree with observations made at the time the mine was being modified for oil storage. The modeling technique employed here treats an infinite array of pillars and is a reasonable representation of the behavior at the center of the mine. This analysis predicts that the lower level pillars, at the center of the mine, have fractured and their stability at this time is questionable. Localized pillar fracturing is predicted and implies that the mine is entering a phase of continual time dependent deterioration. Continued and expanded monitoring of the facility and development of methods to assess and predict its behavior are more important now than ever.

  16. Assessment 101: The Assessment Cycle, Clear and

    E-Print Network [OSTI]

    Su, Xiao

    Assessment 101: The Assessment Cycle, Clear and Simple October 1, 2014 Kellogg West Conference Center, Pomona, CA Resource Binder #12;2014-2015 WASC Senior College and University Commission is pleased expectations. Assessment 101: The Assessment Cycle, Clear and Simple October 1, 2014. Kellogg West, Pomona, CA

  17. Codeword stabilized quantum codes on subsystems

    E-Print Network [OSTI]

    Jeonghwan Shin; Jun Heo; Todd A. Brun

    2012-08-29T23:59:59.000Z

    Codeword stabilized quantum codes provide a unified approach to constructing quantum error-correcting codes, including both additive and non-additive quantum codes. Standard codeword stabilized quantum codes encode quantum information into subspaces. The more general notion of encoding quantum information into a subsystem is known as an operator (or subsystem) quantum error correcting code. Most operator codes studied to date are based in the usual stabilizer formalism. We introduce operator quantum codes based on the codeword stabilized quantum code framework. Based on the necessary and sufficient conditions for operator quantum error correction, we derive a error correction condition for operator codeword stabilized quantum codes. Based on this condition, the word operators of a operator codeword stabilized quantum code are constructed from a set of classical binary errors induced by generators of the gauge group. We use this scheme to construct examples of both additive and non-additive codes that encode quantum information into a subsystem.

  18. Singular Limits in Polymer Stabilized Liquid Crystals

    E-Print Network [OSTI]

    1910-31-00T23:59:59.000Z

    We investigate equilibrium configurations for a polymer stabilized liquid crys- tal material ... eling the cross section of the liquid crystal-polymer fiber composite.

  19. Stabilization of Electrocatalytic Metal Nanoparticles at Metal...

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

    Electrocatalytic Metal Nanoparticles at Metal-Metal Oxide-Graphene Triple Junction Points. Stabilization of Electrocatalytic Metal Nanoparticles at Metal-Metal Oxide-Graphene...

  20. HOLOMORPHIC MOTIONS AND STRUCTURAL STABILITY FOR ...

    E-Print Network [OSTI]

    1910-70-80T23:59:59.000Z

    namics in one variable, we prove the structural stability of hyperbolic polynomial automor- phisms in ..... This extension is characterized by a harmonic Beltrami.

  1. Optimization Online - Quantitative Stability Analysis of Stochastic ...

    E-Print Network [OSTI]

    Jie Zhang

    2015-06-03T23:59:59.000Z

    Jun 3, 2015 ... Quantitative Stability Analysis of Stochastic Quasi-Variational Inequality Problems and Applications. Jie Zhang(zhangjie04212001 ***at*** ...

  2. Stabilization of polyaniline solutions through additives

    DOE Patents [OSTI]

    Wrobleski, D.A.; Benicewicz, B.C.

    1996-12-10T23:59:59.000Z

    A stabilized non-conductive polyaniline solution comprising from about 1 to about 10 percent by weight polyaniline or a polyaniline derivative, from about 90 to about 99 percent by weight N-methylpyrrolidone, and from about 0.5 percent by weight to about 15 percent by weight of a solution stabilizing additive selected from the group consisting of hindered amine light stabilizers, polymeric amines, and dialkylamines, percent by weight of additive based on the total weight of polyaniline or polyaniline derivative is provided together with a method for stabilizing a polyaniline solution. 4 figs.

  3. Stabilization of polyaniline solutions through additives

    DOE Patents [OSTI]

    Wrobleski, Debra A. (Los Alamos, NM); Benicewicz, Brian C. (Los Alamos, NM)

    1996-01-01T23:59:59.000Z

    A stabilized non-conductive polyaniline solution comprising from about 1 to bout 10 percent by weight polyaniline or a polyaniline derivative, from about 90 to about 99 percent by weight N-methylpyrrolidone, and from about 0.5 percent by weight to about 15 percent by weight of a solution stabilizing additive selected from the group consisting of hindered amine light stabilizers, polymeric amines, and dialkylamines, percent by weight of additive based on the total weight of polyaniline or polyaniline derivative is provided together with a method for stabilizing a polyaniline solution.

  4. Chemically stabilized ionomers containing inorganic fillers

    DOE Patents [OSTI]

    Roelofs, Mark Gerrit

    2013-12-31T23:59:59.000Z

    Ionomeric polymers that are chemically stabilized and contain inorganic fillers are prepared, and show reduced degradation. The ionomers care useful in membranes and electrochemical cells.

  5. Adaptive Stabilization of Nonlinear Stochastic Systems

    SciTech Connect (OSTI)

    Florchinger, P. [URA CNRS No. 399, Departement de Mathematiques, UFR MIM, Universite de Metz, Ile du Saulcy, F 57045 Metz Cedex (France)

    1998-07-15T23:59:59.000Z

    The purpose of this paper is to study the problem of asymptotic stabilization in probability of nonlinear stochastic differential systems with unknown parameters. With this aim, we introduce the concept of an adaptive control Lyapunov function for stochastic systems and we use the stochastic version of Artstein's theorem to design an adaptive stabilizer. In this framework the problem of adaptive stabilization of a nonlinear stochastic system is reduced to the problem of asymptotic stabilization in probability of a modified system. The design of an adaptive control Lyapunov function is illustrated by the example of adaptively quadratically stabilizable in probability stochastic differential systems.

  6. Surface rheology and interface stability.

    SciTech Connect (OSTI)

    Yaklin, Melissa A.; Cote, Raymond O.; Moffat, Harry K.; Grillet, Anne Mary; Walker, Lynn; Koehler, Timothy P.; Reichert, Matthew D. (Carnegie Mellon University, Pittsburgh, PA); Castaneda, Jaime N.; Mondy, Lisa Ann; Brooks, Carlton, F.

    2010-11-01T23:59:59.000Z

    We have developed a mature laboratory at Sandia to measure interfacial rheology, using a combination of home-built, commercially available, and customized commercial tools. An Interfacial Shear Rheometer (KSV ISR-400) was modified and the software improved to increase sensitivity and reliability. Another shear rheometer, a TA Instruments AR-G2, was equipped with a du Nouey ring, bicone geometry, and a double wall ring. These interfacial attachments were compared to each other and to the ISR. The best results with the AR-G2 were obtained with the du Nouey ring. A Micro-Interfacial Rheometer (MIR) was developed in house to obtain the much higher sensitivity given by a smaller probe. However, it was found to be difficult to apply this technique for highly elastic surfaces. Interfaces also exhibit dilatational rheology when the interface changes area, such as occurs when bubbles grow or shrink. To measure this rheological response we developed a Surface Dilatational Rheometer (SDR), in which changes in surface tension with surface area are measured during the oscillation of the volume of a pendant drop or bubble. All instruments were tested with various surfactant solutions to determine the limitations of each. In addition, foaming capability and foam stability were tested and compared with the rheology data. It was found that there was no clear correlation of surface rheology with foaming/defoaming with different types of surfactants, but, within a family of surfactants, rheology could predict the foam stability. Diffusion of surfactants to the interface and the behavior of polyelectrolytes were two subjects studied with the new equipment. Finally, surface rheological terms were added to a finite element Navier-Stokes solver and preliminary testing of the code completed. Recommendations for improved implementation were given. When completed we plan to use the computations to better interpret the experimental data and account for the effects of the underlying bulk fluid.

  7. Stability of flows in fluidized beds

    SciTech Connect (OSTI)

    Rajagopal, C.

    1992-01-01T23:59:59.000Z

    In this paper we carry out a systematic linearized stability analysis of the state of uniform fluidization for a fluid infused with granular particles. We carry out an interesting optimization procedure which leads to bounds for certain parameters, within which the state of uniform fluidization is stable. We find that this stability depends critically on the structure of the pressure-like term. (VC)

  8. Stabilization of Mechanical Systems Using Controlled Lagrangians

    E-Print Network [OSTI]

    Leonard, Naomi

    of an inverted pendulum on a cart and for the problem of stabilization of rotation of a rigid spacecraft about grant DMS--91--57556, AFOSR grant F49620­96­1­ 0100, a GuggenheimFellowship and the Inst. for Advanced. cally provide a Lyapunov function for choosing control gains and proving closed­loop stability. Further

  9. Entanglement-assisted codeword stabilized quantum codes

    SciTech Connect (OSTI)

    Shin, Jeonghwan; Heo, Jun; Brun, Todd A. [School of Electrical Engineering, Korea University, Seoul (Korea, Republic of); Communication Sciences Institute, University of Southern California, Los Angeles, California 90089 (United States)

    2011-12-15T23:59:59.000Z

    Entangled qubits can increase the capacity of quantum error-correcting codes based on stabilizer codes. In addition, by using entanglement quantum stabilizer codes can be construct from classical linear codes that do not satisfy the dual-containing constraint. We show that it is possible to construct both additive and nonadditive quantum codes using the codeword stabilized quantum code framework. Nonadditive codes may offer improved performance over the more common stabilizer codes. Like other entanglement-assisted codes, the encoding procedure acts only on the qubits on Alice's side, and only these qubits are assumed to pass through the channel. However, errors in the codeword stabilized quantum code framework give rise to effective Z errors on Bob's side. We use this scheme to construct entanglement-assisted nonadditive quantum codes, in particular, ((5,16,2;1)) and ((7,4,5;4)) codes.

  10. Laser stabilization using spectral hole burning

    E-Print Network [OSTI]

    L. Rippe; B. Julsgaard; A. Walther; S. Kröll

    2006-11-05T23:59:59.000Z

    We have frequency stabilized a Coherent CR699-21 dye laser to a transient spectral hole on the 606 nm transition in Pr^{+3}:Y_2SiO_5. A frequency stability of 1 kHz has been obtained on the 10 microsecond timescale together with a long-term frequency drift below 1 kHz/s. RF magnetic fields are used to repopulate the hyperfine levels allowing us to control the dynamics of the spectral hole. A detailed theory of the atomic response to laser frequency errors has been developed which allows us to design and optimize the laser stabilization feedback loop, and specifically we give a stability criterion that must be fulfilled in order to obtain very low drift rates. The laser stability is sufficient for performing quantum gate experiments in Pr^{+3}:Y_2SiO_5.

  11. Can the correlated stability conjecture be saved?

    E-Print Network [OSTI]

    Alex Buchel; Alexander Patrushev

    2011-06-10T23:59:59.000Z

    Correlated stability conjecture (CSC) proposed by Gubser and Mitra [1,2] linked the thermodynamic and classical (in)stabilities of black branes. In [3] it was shown that the thermodynamic instabilities, specifically the negative specific heat, indeed result in the instabilities in the hydrodynamic spectrum of holographically dual plasma excitations. Counter-examples of CSC were presented in the context of black branes with scalar hair undergoing a second-order phase transition [4,5]. The latter translationary invariant horizons have scalar hair, raising the question whether the asymptotic parameters of the scalar hair can be appropriately interpreted as additional charges leading to a generalization of the thermodynamic stability criterion. In this paper we show that the generalization of the thermodynamic stability criterion of this type can not save CSC. We further present a simple statistical model which makes it clear that thermodynamic and dynamical (in)stabilities generically are not correlated.

  12. Strategic Plan Environmental Assessment

    E-Print Network [OSTI]

    Strategic Plan Environmental Assessment 2009 Clinical Center National Institutes of Health U Institutes of Health Strategic Plan ­ Environmental Assessment 2009 Contents Executive Summary environmental assessment to determine Clinical Center strengths, weaknesses, opportunities, and threats

  13. Structural stability of cooling flows

    E-Print Network [OSTI]

    Henrik Omma; James Binney

    2003-12-31T23:59:59.000Z

    Three-dimensional hydrodynamical simulations are used to investigate the structural stability of cooling flows that are episodically heated by jets from a central AGN. The radial profile of energy deposition is controlled by (a) the power of the jets, and (b) the pre-outburst density profile. A delay in the ignition of the jets causes more powerful jets to impact on a more centrally concentrated medium. The net effect is a sufficient increase in the central concentration of energy deposition to cause the post-outburst density profile to be less centrally concentrated than that of an identical cluster in which the outburst happened earlier and was weaker. These results suggest that the density profiles of cooling flows oscillate around an attracting profile, thus explaining why cooling flows are observed to have similar density profiles. The possibility is raised that powerful FR II systems are ones in which this feedback mechanism has broken down and a runaway growth of the source parameters has occurred.

  14. ORISE: Hazard Assessments

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

    assesses both chemical and radiation exposures, and conducts both internal and external radiation dose assessments. Our capabililities include: Linkage of exposure data to site...

  15. Solar radiation resource assessment

    SciTech Connect (OSTI)

    Not Available

    1990-11-01T23:59:59.000Z

    The bulletin discusses the following: introduction; Why is solar radiation resource assessment important Understanding the basics; the solar radiation resource assessment project; and future activities.

  16. Process for stabilization of coal liquid fractions

    DOE Patents [OSTI]

    Davies, Geoffrey (Boston, MA); El-Toukhy, Ahmed (Alexandria, EG)

    1987-01-01T23:59:59.000Z

    Coal liquid fractions to be used as fuels are stabilized against gum formation and viscosity increases during storage, permitting the fuel to be burned as is, without further expensive treatments to remove gums or gum-forming materials. Stabilization is accomplished by addition of cyclohexanol or other simple inexpensive secondary and tertiary alcohols, secondary and tertiary amines, and ketones to such coal liquids at levels of 5-25% by weight with respect to the coal liquid being treated. Cyclohexanol is a particularly effective and cost-efficient stabilizer. Other stabilizers are isopropanol, diphenylmethanol, tertiary butanol, dipropylamine, triethylamine, diphenylamine, ethylmethylketone, cyclohexanone, methylphenylketone, and benzophenone. Experimental data indicate that stabilization is achieved by breaking hydrogen bonds between phenols in the coal liquid, thereby preventing or retarding oxidative coupling. In addition, it has been found that coal liquid fractions stabilized according to the invention can be mixed with petroleum-derived liquid fuels to produce mixtures in which gum deposition is prevented or reduced relative to similar mixtures not containing stabilizer.

  17. Jacobi stability analysis of the Lorenz system

    E-Print Network [OSTI]

    Tiberiu Harko; Chor Yin Ho; Chun Sing Leung; Stan Yip

    2015-04-11T23:59:59.000Z

    We perform the study of the stability of the Lorenz system by using the Jacobi stability analysis, or the Kosambi-Cartan-Chern (KCC) theory. The Lorenz model plays an important role for understanding hydrodynamic instabilities and the nature of the turbulence, also representing a non-trivial testing object for studying non-linear effects. The KCC theory represents a powerful mathematical method for the analysis of dynamical systems. In this approach we describe the evolution of the Lorenz system in geometric terms, by considering it as a geodesic in a Finsler space. By associating a non-linear connection and a Berwald type connection, five geometrical invariants are obtained, with the second invariant giving the Jacobi stability of the system. The Jacobi (in)stability is a natural generalization of the (in)stability of the geodesic flow on a differentiable manifold endowed with a metric (Riemannian or Finslerian) to the non-metric setting. In order to apply the KCC theory we reformulate the Lorenz system as a set of two second order non-linear differential equations. The geometric invariants associated to this system (nonlinear and Berwald connections), and the deviation curvature tensor, as well as its eigenvalues, are explicitly obtained. The Jacobi stability of the equilibrium points of the Lorenz system is studied, and the condition of the stability of the equilibrium points is obtained. Finally, we consider the time evolution of the components of the deviation vector near the equilibrium points.

  18. Long life lithium batteries with stabilized electrodes

    DOE Patents [OSTI]

    Amine, Khalil (Downers Grove, IL); Liu, Jun (Naperville, IL); Vissers, Donald R. (Naperville, IL); Lu, Wenquan (Darien, IL)

    2009-03-24T23:59:59.000Z

    The present invention relates to non-aqueous electrolytes having electrode stabilizing additives, stabilized electrodes, and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, and an electrode stabilizing additive. In some embodiments the additives include a substituted or unsubstituted cyclic or spirocyclic hydrocarbon containing at least one oxygen atom and at least one alkenyl or alkynyl group. When used in electrochemical devices with, e.g., lithium manganese oxide spinel electrodes or olivine or carbon-coated olivine electrodes, the new electrolytes provide batteries with improved calendar and cycle life.

  19. Towards Understanding the Poor Thermal Stability of V5+ Electrolyte...

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

    the Poor Thermal Stability of V5+ Electrolyte Solution in Vanadium Redox Flow Batteries. Towards Understanding the Poor Thermal Stability of V5+ Electrolyte Solution in...

  20. attitude stability system: Topics by E-print Network

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

    such as Gravity Gradient stabilization, (more) Rawashdeh, Samir Ahmed 2010-01-01 3 Design of Attitude Stability System for Prolate Dual-spin Satellite in Its Inclined...

  1. Enhanced Activity and Stability of Pt catalysts on Functionalized...

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

    Enhanced Activity and Stability of Pt catalysts on Functionalized Graphene Sheets for Electrocatalytic Oxygen Reduction . Enhanced Activity and Stability of Pt catalysts on...

  2. Electrochemical Performance and Stability of the Cathode for...

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

    Performance and Stability of the Cathode for Solid Oxide Fuel Cells. I. Cross Validation of Polarization Electrochemical Performance and Stability of the Cathode for Solid Oxide...

  3. Novel Compounds for Enhancing Electrolyte Stability and Safety...

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

    Compounds for Enhancing Electrolyte Stability and Safety of Lithium-ion Cells Novel Compounds for Enhancing Electrolyte Stability and Safety of Lithium-ion Cells 2010 DOE Vehicle...

  4. Molecular Structure and Stability of Dissolved Lithium Polysulfide...

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

    Stability of Dissolved Lithium Polysulfide Species. Molecular Structure and Stability of Dissolved Lithium Polysulfide Species. Abstract: Ability to predict the solubility and...

  5. Surface and Structural Stabilities of Carbon Additives in High...

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

    Structural Stabilities of Carbon Additives in High Voltage Lithium Ion Batteries. Surface and Structural Stabilities of Carbon Additives in High Voltage Lithium Ion Batteries....

  6. Advanced Oxidation & Stabilization of PAN-Based Carbon Precursor...

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

    More Documents & Publications Advanced Oxidation & Stabilization of PAN-Based Carbon Precursor Fibers Advanced Oxidation & Stabilization of PAN-Based Carbon Precursor...

  7. Composition, stability, and measurement of reduced uranium phases...

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

    Composition, stability, and measurement of reduced uranium phases for groundwater bioremediation at Old Rifle, CO. Composition, stability, and measurement of reduced uranium phases...

  8. Theoretical Study of the Structure, Stability and Oxygen Reduction...

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

    Study of the Structure, Stability and Oxygen Reduction Activity ofUltrathin Platinum Nanowires. Theoretical Study of the Structure, Stability and Oxygen Reduction Activity...

  9. Density Functional Study of the Structure, Stability and Oxygen...

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

    Study of the Structure, Stability and Oxygen Reduction Activity of Ultrathin Platinum Nanowires. Density Functional Study of the Structure, Stability and Oxygen Reduction Activity...

  10. Grain growth and phase stability of nanocrystalline cubic zirconia...

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

    of nanocrystalline cubic zirconia under ion irradiation. Abstract: Grain growth, oxygen stoichiometry and phase stability of nanostructurally-stabilized zirconia (NSZ) in...

  11. Improved Stability Of Amorphous Zinc Tin Oxide Thin Film Transistors...

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

    Stability Of Amorphous Zinc Tin Oxide Thin Film Transistors Using Molecular Passivation. Improved Stability Of Amorphous Zinc Tin Oxide Thin Film Transistors Using Molecular...

  12. Stability Of Nanoclusters In 14YWT Oxide Dispersion Strengthened...

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

    Stability Of Nanoclusters In 14YWT Oxide Dispersion Strengthened Steel Under Heavy Ion-irradiation By Atom Probe Tomography. Stability Of Nanoclusters In 14YWT Oxide Dispersion...

  13. Quality, Stability, Performance, and Emission Impacts of Biodiesel...

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

    Quality, Stability, Performance, and Emission Impacts of Biodiesel Blends Quality, Stability, Performance, and Emission Impacts of Biodiesel Blends Presentation from the U.S. DOE...

  14. Adaptive Stack with Subdivided Cells for Improved Stability,...

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

    with Subdivided Cells for Improved Stability, Reliability, and Durability under Automotive Load Cycle Adaptive Stack with Subdivided Cells for Improved Stability, Reliability,...

  15. NRCS CSREES Watershed Assessments

    E-Print Network [OSTI]

    .E.A.P. Conservation Effects Assessment Project #12;Measuring the Environmental Benefits of Conservation;Conservation Effects Assessment Project Please turn off the ringers on your cell phones, pagers, blackberries The Conservation EffectsThe Conservation Effects Assessment ProjectAssessment Project (CEAP)(CEAP) #12;Scope

  16. ASSESSMENT FOR THE SOUTHWEST

    E-Print Network [OSTI]

    Wong, Pak Kin

    SERVICE CLIMATE CHANGE & CULTURAL RESOURCE PLANNING PROGRAM 17 EARTH SYSTEM MODELS 18 CLIMATE ASSESSMENTS

  17. Mica Surfaces Stabilize Pentavalent Uranium. | EMSL

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

    Ilton ES, A Haiduc, CL Cahill, and AR Felmy.2005."Mica Surfaces Stabilize Pentavalent Uranium."Inorganic Chemistry 44(9):2986-2988. Authors: ES Ilton A Haiduc CL Cahill AR...

  18. Stability Index of Interaction forms Joseph Abdou

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Stability Index of Interaction forms Joseph Abdou December 15, 2008 Abstract An interaction form, 106-112 boulevard de l'H^opital 75647 Paris Cedex 13 - France; email: abdou@univ-paris1.fr 1 halshs

  19. LED Color Stability: 10 Important Questions

    Broader source: Energy.gov [DOE]

    This April 15, 2014 webinar examined the causes of color shift, and took a look at existing metrics used to describe color shift/color stability in LED lighting. The lumen maintenance lifetime of...

  20. Entanglement-assisted codeword stabilized quantum codes

    E-Print Network [OSTI]

    Jeonghwan Shin; Jun Heo; Todd A. Brun

    2011-09-15T23:59:59.000Z

    Entangled qubit can increase the capacity of quantum error correcting codes based on stabilizer codes. In addition, by using entanglement quantum stabilizer codes can be construct from classical linear codes that do not satisfy the dual-containing constraint. We show that it is possible to construct both additive and non-additive quantum codes using the codeword stabilized quantum code framework. Nonadditive codes may offer improved performance over the more common sta- bilizer codes. Like other entanglement-assisted codes, the encoding procedure acts only the qubits on Alice's side, and only these qubits are assumed to pass through the channel. However, errors the codeword stabilized quantum code framework gives rise to effective Z errors on Bob side. We use this scheme to construct new entanglement-assisted non-additive quantum codes, in particular, ((5,16,2;1)) and ((7,4,5;4)) codes.

  1. What does stabilizing greenhouse gas concentrations mean?

    E-Print Network [OSTI]

    Jacoby, Henry D.; Schmalensee, Richard.; Reiner, David M.

    The MIT Emissions Prediction and Policy Analysis (EPPA) model is applied to an exploration of the national emissions obligations that would be required to stabilize atmospheric CO2 concentrations at levels now under active ...

  2. Stabilizer Formalism for Operator Quantum Error Correction

    E-Print Network [OSTI]

    Poulin, D

    2005-01-01T23:59:59.000Z

    Operator quantum error correction is a recently developed theory that provides a generalized framework for active error correction and passive error avoiding schemes. In this paper, we describe these codes in the language of the stabilizer formalism of standard quantum error correction theory. This is achieved by adding a "gauge" group to the standard stabilizer definition of a code. Gauge transformations leave the encoded information unchanged; their effect is absorbed by virtual gauge qubits that do not carry useful information. We illustrate the construction by identifying a gauge symmetry in Shor's 9-qubit code that allows us to remove 3 of its 8 stabilizer generators, leading to a simpler decoding procedure without affecting its essential properties. This opens the path to possible improvement of the error threshold of fault tolerant quantum computing. We also derive a modified Hamming bound that applies to all stabilizer codes, including degenerate ones.

  3. Static Stability of Tension Leg Platforms

    E-Print Network [OSTI]

    Xu, Ning

    2010-07-14T23:59:59.000Z

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

  4. Discontinuous Lyapunov Functions for Nonasymptotic Stability Analysis

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Discontinuous Lyapunov Functions for Nonasymptotic Stability Analysis A. Polyakov Inria Lille of discontinuous control systems using discontinuous Lyapunov functions. Elements of Filippov theory of generalized derivatives and non-smooth Lyapunov functions are considered. The generalized Lyapunov theorems

  5. Soil stabilization properties of flexible intruders

    E-Print Network [OSTI]

    Luginbuhl, Katharine

    2012-01-01T23:59:59.000Z

    In many locations, soil is held in place by the roots of plants. When these plants are removed or die, the soil loses its cohesive strength and erodes away. We seek to create artificial soil stabilizers that use the same ...

  6. Crude oil and finished fuel storage stability: An annotated review

    SciTech Connect (OSTI)

    Whisman, M.L.; Anderson, R.P.; Woodward, P.W.; Giles, H.N.

    1991-01-01T23:59:59.000Z

    A state-of-the-art review and assessment of storage effects on crude oil and product quality was undertaken through a literature search by computer accessing several data base sources. Pertinent citations from that literature search are tabulated for the years 1980 to the present. This 1990 revision supplements earlier reviews by Brinkman and others which covered stability publications through 1979 and an update in 1983 by Goetzinger and others that covered the period 1952--1982. For purposes of organization, citations are listed in the current revision chronologically starting with the earliest 1980 publications. The citations have also been divided according to primary subject matter. Consequently 11 sections appear including: alternate fuels, gasoline, distillate fuel, jet fuel, residual fuel, crude oil, biodegradation, analyses, reaction mechanisms, containment, and handling and storage. Each section contains a brief narrative followed by all the citations for that category.

  7. A model study of articulated mat stability

    E-Print Network [OSTI]

    Sasaki, Tetsu

    1990-01-01T23:59:59.000Z

    characteristics of. model articulated mat revetrrient svith respect to different revetmert slope con- ditions. In this experirrent three diFierent slope permeabilities were investigated by layering geotextile filter on the revetment frame. The stability... EXPERIMENTAL PROCEDURE 12 18 A. Geotextile filter B. Stability experiment V WAVE RUNUP 18 21 33 VI VII VIII WAVE RUNDOWN UPLIFTING FORCE SLIDE-UP FORCE 44 IX SLIDE-DOWN FORCE 77 SUMMARY AND CONCLUSION REFERENCES . APPENDIX A EXPERIMENTAL...

  8. Electrostatic wire stabilizing a charged particle beam

    DOE Patents [OSTI]

    Prono, D.S.; Caporaso, G.J.; Briggs, R.J.

    1983-03-21T23:59:59.000Z

    In combination with a charged particle beam generator and accelerator, apparatus and method are provided for stabilizing a beam of electrically charged particles. A guiding means, disposed within the particle beam, has an electric charge induced upon it by the charged particle beam. Because the sign of the electric charge on the guiding means and the sign of the particle beam are opposite, the particles are attracted toward and cluster around the guiding means to thereby stabilize the particle beam as it travels.

  9. Stabilizing windings for tilting and shifting modes

    DOE Patents [OSTI]

    Jardin, Stephen C. (Princeton, NJ); Christensen, Uffe R. (Princeton, NJ)

    1984-01-01T23:59:59.000Z

    This invention relates to passive conducting loops for stabilizing a plasma ring against unstable tilting and/or shifting modes. To this end, for example, plasma ring in a spheromak is stabilized by a set of four figure-8 shaped loops having one pair on one side of the plasma and one pair on the other side with each pair comprising two loops whose axes are transverse to each other.

  10. Engineering report (conceptual design) PFP solution stabilization

    SciTech Connect (OSTI)

    Witt, J.B.

    1997-07-17T23:59:59.000Z

    This Engineering Report (Conceptual Design) addresses remediation of the plutonium-bearing solutions currently in inventory at the Plutonium Finishing Plant (PFP). The recommendation from the Environmental Impact Statement (EIS) is that the solutions be treated thermally and stabilized as a solid for long term storage. For solutions which are not discardable, the baseline plan is to utilize a denitration process to stabilize the solutions prior to packaging for storage.

  11. Stabilized fuel with silica support structure

    SciTech Connect (OSTI)

    Poco, J.F.; Hrubesh, L.W.

    1991-12-31T23:59:59.000Z

    This report describes a stabilized fuel which is supported by a silica support structure. The silica support structure provides a low density, high porosity vehicle for safely carrying hydrocarbon fuels. The silica support structure for hydrocarbon fuel does not produce toxic material residues on combustion which would pose environmentally sensitive disposal problems. The silica stabilized fuel composition is useful as a low temperature, continuous burning fire starter for wood or charcoal.

  12. Further Results on Finite-Time Partial Stability and Stabilization. Applications to Nonlinear Control Systems

    SciTech Connect (OSTI)

    Jammazi, Chaker [Faculte des Sciences de Bizerte Departement de Mathematiques Laboratoire LIM Ecole Polytechnique de Tunisie (Tunisia)

    2009-03-05T23:59:59.000Z

    The paper gives Lyapunov type sufficient conditions for partial finite-time and asymptotic stability in which some state variables converge to zero while the rest converge to constant values that possibly depend on the initial conditions. The paper then presents partially asymptotically stabilizing controllers for many nonlinear control systems for which continuous asymptotically stabilizing (in the usual sense) controllers are known not to exist.

  13. Sundman Stability of Natural Planet Satellites

    E-Print Network [OSTI]

    Lukyanov, L G

    2012-01-01T23:59:59.000Z

    The stability of the motion of the planet satellites is considered in the model of the general three-body problem (Sun-planet-satellite). "Sundman surfaces" are constructed, by means of which the concept "Sundman stability" is formulated. The comparison of the Sundman stability with the results of Golubev's c2h method and with the Hill's classical stability in the restricted three-body problem is performed. The constructed Sundman stability regions in the plane of the parameters "energy - moment of momentum" coincide with the analogous regions obtained by Golubev's method, with the value (c2h)cr. The construction of the Sundman surfaces in the three-dimensional space of the specially selected coordinates xyR is carried out by means of the exact Sundman inequality in the general three-body problem. The determination of the singular points of surfaces, the regions of the possible motion and Sundman stability analysis are implemented. It is shown that the singular points of the Sundman surfaces in the coordinate...

  14. Area C borrow Site Habitat Assessment

    SciTech Connect (OSTI)

    Sackschewsky, Michael R.; Downs, Janelle L.

    2009-12-04T23:59:59.000Z

    A habitat quality assessment was performed within selected portions of the proposed Area C Borrow Source. The previously identified Bitterbrush / Indian ricegrass stabilized dune element occurrence was determined to be better described as a sagebrush /needle-and-thread grass element occurrence of fair to good quality. A new habitat polygon is suggested adjacent to this element occurrence, which would also be sagebrush/needle-and-thread grass, but of poor quality. The proposed site of initial borrow site development was found to be a very low quality community dominated by cheatgrass.

  15. Distributed road assessment system

    DOE Patents [OSTI]

    Beer, N. Reginald; Paglieroni, David W

    2014-03-25T23:59:59.000Z

    A system that detects damage on or below the surface of a paved structure or pavement is provided. A distributed road assessment system includes road assessment pods and a road assessment server. Each road assessment pod includes a ground-penetrating radar antenna array and a detection system that detects road damage from the return signals as the vehicle on which the pod is mounted travels down a road. Each road assessment pod transmits to the road assessment server occurrence information describing each occurrence of road damage that is newly detected on a current scan of a road. The road assessment server maintains a road damage database of occurrence information describing the previously detected occurrences of road damage. After the road assessment server receives occurrence information for newly detected occurrences of road damage for a portion of a road, the road assessment server determines which newly detected occurrences correspond to which previously detected occurrences of road damage.

  16. MERCURY STABILITY IN THE ENVIRONMENT

    SciTech Connect (OSTI)

    John H. Pavlish

    1999-07-01T23:59:59.000Z

    The 1990 Clean Air Act Amendments (CAAAs) require the U.S. Environmental Protection Agency (EPA) to determine whether the presence of mercury and 188 other trace substances, referred to as air toxics or hazardous air pollutants (HAPs), in the stack emissions from fossil fuel-fired electric utility power plants poses an unacceptable public health risk (1). The EPA's conclusions and recommendations were presented in two reports: Mercury Study Report to Congress and Study of Hazardous Air Pollutant Emissions from Electric Utility Steam Generating Units-Final Report to Congress. The first congressional report addressed both human health and the environmental effects of anthropogenic mercury emissions, while the second report addressed the risk to public health posed by emissions of HAPs from steam electricity-generating units. The National Institute of Environmental Health Sciences is also required by the CAAAs to investigate mercury and determine a safe threshold level of exposure. Recently the National Academy of Sciences has also been commissioned by Congress to complete a report, based the available scientific evidence, regarding safe threshold levels of mercury exposure. Although the EPA reports did not state that mercury controls on coal-fired electric power stations should be required given the current state of the art, they did indicate that EPA views mercury as a potential threat to human health. It is likely that major sources of mercury emissions, including fossil-fired combustion systems, will be controlled at some point. In fact, municipal waste combustion units are already regulated. In anticipation of additional control measures, much research has been done (and continues) regarding the development of control technologies for mercury emitted from stationary sources to the atmosphere. Most approaches taken to date involve sorbent injection technologies or improve upon removal of mercury using existing technologies such as flue gas desulfurization scrubbers, fabric filters, and electrostatic precipitators. Depending on the fly ash chemistry and the form of mercury present in the flue gas, some of these existing technologies can be effective at capturing vapor-phase mercury from the flue gas stream. Although much research has been done on enhancing the removal of mercury from flue gas streams, little research has focused on what happens to the mercury when it is captured and converted and/or transferred to a solid or aqueous solution. The stability (or mobility) of mercury in this final process is critical and leads to the questions, What impact will the increased concentration of mercury have on utilization, disposal, and reuse? and Is the mercury removed from the flue gas really removed from the environment or rereleased at a later point? To help answer these questions, the Energy & Environmental Research Center (EERC) as part of the U.S. Department of Energy (DOE) Base Cooperative Agreement did a series of experiments using thermal desorption and leaching techniques. This report presents the results from these tests.

  17. Stability and feasibility of state-constrained linear MPC without stabilizing terminal constraints

    E-Print Network [OSTI]

    Knobloch,JĂĽrgen

    , an optimal control problem. In this paper we study stability and recursive feasibility of linear MPC schemes] stability and recursive feasibility is shown for controllable linear quadratic systems with mixed linear and control constraints. Stabilizable linear systems are also considered in [18] but in an uncon- strained

  18. Process for stabilizing the viscosity characteristics of coal derived materials and the stabilized materials obtained thereby

    DOE Patents [OSTI]

    Bronfenbrenner, James C. (Allentown, PA); Foster, Edward P. (Allentown, PA); Tewari, Krishna (Allentown, PA)

    1985-01-01T23:59:59.000Z

    A process is disclosed for stabilizing the viscosity of coal derived materials such as an SRC product by adding up to 5.0% by weight of a light volatile phenolic viscosity repressor. The viscosity will remain stabilized for a period of time of up to 4 months.

  19. The (In)Stability of Planetary Systems

    E-Print Network [OSTI]

    Rory Barnes; Thomas Quinn

    2004-01-09T23:59:59.000Z

    We present results of numerical simulations which examine the dynamical stability of known planetary systems, a star with two or more planets. First we vary the initial conditions of each system based on observational data. We then determine regions of phase space which produce stable planetary configurations. For each system we perform 1000 ~1 million year integrations. We examine upsilon And, HD83443, GJ876, HD82943, 47UMa, HD168443, and the solar system (SS). We find that the resonant systems, 2 planets in a first order mean motion resonance, (HD82943 and GJ876) have very narrow zones of stability. The interacting systems, not in first order resonance, but able to perturb each other (upsilon And, 47UMa, and SS) have broad regions of stability. The separated systems, 2 planets beyond 10:1 resonance, (we only examine HD83443 and HD168443) are fully stable. Furthermore we find that the best fits to the interacting and resonant systems place them very close to unstable regions. The boundary in phase space between stability and instability depends strongly on the eccentricities, and (if applicable) the proximity of the system to perfect resonance. In addition to million year integrations, we also examined stability on ~100 million year timescales. For each system we ran ~10 long term simulations, and find that the Keplerian fits to these systems all contain configurations which may be regular on this timescale.

  20. Stability Study of the RERTR Fuel Microstructure

    SciTech Connect (OSTI)

    Jian Gan; Dennis Keiser; Brandon Miller; Daniel Wachs

    2014-04-01T23:59:59.000Z

    The irradiation stability of the interaction phases at the interface of fuel and Al alloy matrix as well as the stability of the fission gas bubble superlattice is believed to be very important to the U-Mo fuel performance. In this paper the recent result from TEM characterization of Kr ion irradiated U-10Mo-5Zr alloy will be discussed. The focus will be on the phase stability of Mo2-Zr, a dominated second phase developed at the interface of U-10Mo and the Zr barrier in a monolithic fuel plate from fuel fabrication. The Kr ion irradiations were conducted at a temperature of 200 degrees C to an ion fluence of 2.0E+16 ions/cm2. To investigate the thermal stability of the fission gas bubble superlattice, a key microstructural feature in both irradiated dispersion U-7Mo fuel and monolithic U-10Mo fuel, a FIB-TEM sample of the irradiated U-10Mo fuel (3.53E+21 fission/cm3) was used for a TEM in-situ heating experiment. The preliminary result showed extraordinary thermal stability of the fission gas bubble superlattice. The implication of the TEM observation from these two experiments on the fuel microstructural evolution under irradiation will be discussed.

  1. In Situ Community Control of the Stability of Bioreduced Uranium

    SciTech Connect (OSTI)

    White, David C.

    2005-06-01T23:59:59.000Z

    In-well sediment incubators Direct estimation of reoxidation rates is difficult under field conditions. We have designed and are fabricating in-well sediment incubators for use in conducting a series of in situ experiments that will enable direct measurement of U(IV) removal rates from pre-reduced sediments with specific microbial and mineralogic amendments. By comparing U(IV) loss rates with different DIRB and SRB populations we will be able to clearly determine the relative impact of sulfate reducers vs. Fe reducers. The approach we propose also makes it possible to assess actual in situ conditions during the experiment and to directly observe reoxidation (or bioreduction) end points after the field experiment is completed without drilling. Finally, the production of in-well sediment incubators is relatively inexpensive and could ultimately become an alternative to field-scale electron donor amendment experiments as a means of assessing site response to bioremediation and long-term stability of both biostimulated and naturally bioattenuated sites.

  2. Solar Resource Assessment

    SciTech Connect (OSTI)

    Renne, D.; George, R.; Wilcox, S.; Stoffel, T.; Myers, D.; Heimiller, D.

    2008-02-01T23:59:59.000Z

    This report covers the solar resource assessment aspects of the Renewable Systems Interconnection study. The status of solar resource assessment in the United States is described, and summaries of the availability of modeled data sets are provided.

  3. Edinburgh Motor Assessment (EMAS) 

    E-Print Network [OSTI]

    Bak, Thomas

    2013-12-01T23:59:59.000Z

    Edinburgh Motor Assessment (EMAS) is a brief motor screening test, specifically designed for assessment of patients with dementia, aphasia and other cognitive disorders. It focuses, therefore, on those motor symptoms, ...

  4. Vacuum (meta)stability beyond the MSSM

    SciTech Connect (OSTI)

    Blum, Kfir; Delaunay, Cedric; Hochberg, Yonit [Department of Particle Physics, Weizmann Institute of Science, Rehovot 76100 (Israel)

    2009-10-01T23:59:59.000Z

    We study the stability of the Higgs potential in the framework of the effective Lagrangian beyond the minimal supersymmetric standard model (MSSM). While the leading nonrenormalizable operators can shift the Higgs boson mass above the experimental bound, they also tend to render the scalar potential unbounded from below. The destabilization is correlated with the Higgs mass increase, so that if quantum corrections are small the problem is severe. We show that a supersymmetric subleading correction stabilizes the potential within the domain of validity of the effective theory. Constraints on MSSM parameters as well as on higher dimensional operators are derived, ensuring that our vacuum has a lifetime longer than the present age of the Universe. In addition we show that when effective operators are responsible for evading the LEP bound, stability constraints imply an upper bound on the scale of new physics in the few TeV range.

  5. Sensitivity approximation for robust stability and tracking

    E-Print Network [OSTI]

    McLean, Chris Steven

    1984-01-01T23:59:59.000Z

    (s) such that the Bezout identity is satisfied a(s) s(s) + d(s) &(s) = 1. In the single loop control configuration of Figure 1, the set of all proper stabilizing compensators is of the form &( ) + a(s)k(s) C(s) = z(s) ? b(s) k(s) ' where k(s) is any stable, proper... whether or not a stable proper k(s) exists such that the following is an equality, Ss(s) = a(s)jz(s) ? b(s)k(s)j. (i4) Obviously the properties of causality and stability that k(s) must satisfy to ensure internal stability translate into constraints...

  6. Wind Power Plant Voltage Stability Evaluation: Preprint

    SciTech Connect (OSTI)

    Muljadi, E.; Zhang, Y. C.

    2014-09-01T23:59:59.000Z

    Voltage stability refers to the ability of a power system to maintain steady voltages at all buses in the system after being subjected to a disturbance from a given initial operating condition. Voltage stability depends on a power system's ability to maintain and/or restore equilibrium between load demand and supply. Instability that may result occurs in the form of a progressive fall or rise of voltages of some buses. Possible outcomes of voltage instability are the loss of load in an area or tripped transmission lines and other elements by their protective systems, which may lead to cascading outages. The loss of synchronism of some generators may result from these outages or from operating conditions that violate a synchronous generator's field current limit, or in the case of variable speed wind turbine generator, the current limits of power switches. This paper investigates the impact of wind power plants on power system voltage stability by using synchrophasor measurements.

  7. Stabilizer Formalism for Operator Quantum Error Correction

    E-Print Network [OSTI]

    David Poulin

    2006-06-14T23:59:59.000Z

    Operator quantum error correction is a recently developed theory that provides a generalized framework for active error correction and passive error avoiding schemes. In this paper, we describe these codes in the stabilizer formalism of standard quantum error correction theory. This is achieved by adding a "gauge" group to the standard stabilizer definition of a code that defines an equivalence class between encoded states. Gauge transformations leave the encoded information unchanged; their effect is absorbed by virtual gauge qubits that do not carry useful information. We illustrate the construction by identifying a gauge symmetry in Shor's 9-qubit code that allows us to remove 4 of its 8 stabilizer generators, leading to a simpler decoding procedure and a wider class of logical operations without affecting its essential properties. This opens the path to possible improvements of the error threshold of fault-tolerant quantum computing.

  8. Survey of Biomass Resource Assessments and Assessment Capabilities...

    Open Energy Info (EERE)

    Assessment Capabilities in APEC Economies Jump to: navigation, search Logo: Survey of Biomass Resource Assessments and Assessment Capabilities in APEC Economies Name Survey of...

  9. Writing Assessment: Additional Resources

    E-Print Network [OSTI]

    Schweik, Charles M.

    29 Appendix A Writing Assessment: Additional Resources #12;30 Where can I find out more into the assessment process. On-campus resources give you with a "real person" to contact should you have questions Resources for Higher Education Outcomes Assessment http://www2.acs.ncsu.edu/UPA/survey/resource.htm Ohio

  10. Quantum Stabilizer Codes Embedding Qubits Into Qudits

    E-Print Network [OSTI]

    Carlo Cafaro; Federico Maiolini; Stefano Mancini

    2012-07-30T23:59:59.000Z

    We study, by means of the stabilizer formalism, a quantum error correcting code which is alternative to the standard block codes since it embeds a qubit into a qudit. The code exploits the non-commutative geometry of discrete phase space to protect the qubit against both amplitude and phase errors. The performance of such code is evaluated on Weyl channels by means of the entanglement fidelity as function of the error probability. A comparison with standard block codes, like five and seven qubit stabilizer codes, shows its superiority.

  11. Stability of the Trotter-Suzuki decomposition

    E-Print Network [OSTI]

    Ish Dhand; Barry C. Sanders

    2014-07-09T23:59:59.000Z

    The Trotter-Suzuki decomposition is an important tool for the simulation and control of physical systems. We provide evidence for the stability of the Trotter-Suzuki decomposition. We model the error in the decomposition and determine sufficiency conditions that guarantee the stability of this decomposition under this model. We relate these sufficiency conditions to precision limitations of computing and control in both classical and quantum cases. Furthermore we show that bounded-error Trotter-Suzuki decomposition can be achieved by a suitable choice of machine precision.

  12. Mercury stabilization in chemically bonded phosphate ceramics

    SciTech Connect (OSTI)

    Wagh, A. S.; Singh, D.; Jeong, S. Y.

    2000-04-04T23:59:59.000Z

    Mercury stabilization and solidification is a significant challenge for conventional stabilization technologies. This is because of the stringent regulatory limits on leaching of its stabilized products. In a conventional cement stabilization process, Hg is converted at high pH to its hydroxide, which is not a very insoluble compound; hence the preferred route for Hg sulfidation to convert it into insoluble cinnabar (HgS). Unfortunately, efficient formation of this compound is pH-dependent. At a high pH, one obtains a more soluble Hg sulfate, in a very low pH range, insufficient immobilization occurs because of the escape of hydrogen sulfide, while efficient formation of HgS occurs only in a moderately acidic region. Thus, the pH range of 4 to 8 is where stabilization with Chemically Bonded Phosphate Ceramics (CBPC) is carried out. This paper discusses the authors experience on bench-scale stabilization of various US Department of Energy (DOE) waste streams containing Hg in the CBPC process. This process was developed to treat DOE's mixed waste streams. It is a room-temperature-setting process based on an acid-base reaction between magnesium oxide and monopotassium phosphate solution that forms a dense ceramic within hours. For Hg stabilization, addition of a small amount (< 1 wt.%) of Na{sub 2}S or K{sub 2}S is sufficient in the binder composition. Here the Toxicity Characteristic Leaching Procedure (TCLP) results on CBPC waste forms of surrogate waste streams representing secondary Hg containing wastes such as combustion residues and Delphi DETOX{trademark} residues are presented. The results show that although the current limit on leaching of Hg is 0.2 mg/L, the results from the CBPC waste forms are at least one order lower than this stringent limit. Encouraged by these results on surrogate wastes, they treated actual low-level Hg-containing mixed waste from their facility at Idaho. TCLP results on this waste are presented here. The efficient stabilization in all these cases is attributed to chemical immobilization as both a sulfide (cinnabar) and a phosphate, followed by its physical encapsulation in a dense matrix of the ceramic.

  13. Fluid sphere: stability problem and dimensional constraint

    E-Print Network [OSTI]

    Farook Rahaman; Anirudh Pradhan; Nasr Ahmed; Saibal Ray; Bijan Saha; Mosiur Rahaman

    2015-04-14T23:59:59.000Z

    We study different dimensional fluids inspired by noncommutative geometry which admit conformal Killing vectors. The solutions of the Einstein field equations examined specifically for five different set of spacetime. We calculate the active gravitational mass and impose stability conditions of the fluid sphere. The analysis thus carried out immediately indicates that at $4$-dimension only one can get a stable configuration for any spherically symmetric stellar system and any other dimensions, lower or higher, becomes untenable as far as the stability of a system is concerned.

  14. Management Assessment and Independent Assessment Guide

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

    2001-05-31T23:59:59.000Z

    The revision to this Guide reflects current assessment practices, international standards, and changes in the Department of Energy expectations. Cancels DOE G 414.1-1. Canceled by DOE G 414.1-1B.

  15. Assessing the assessments: Pharmaceuticals in the environment

    SciTech Connect (OSTI)

    Enick, O.V. [Department of Biological Sciences, Simon Fraser University, Burnaby, BC, V5A 1S6 (Canada)], E-mail: oana.enick@gov.bc.ca; Moore, M.M. [Department of Biological Sciences, Simon Fraser University, Burnaby, BC, V5A 1S6 (Canada)], E-mail: mmoore@sfu.ca

    2007-11-15T23:59:59.000Z

    The relatively new issue of pharmaceutical contamination of the environment offers the opportunity to explore the application of values to the construction, communication and management of risk. The still-developing regulatory policies regarding environmental contamination with pharmaceuticals provide fertile ground for the introduction of values into the definition and management of risk. In this report, we summarize the current knowledge regarding pharmaceutical contamination of the environment and discuss specific attributes of pharmaceuticals that require special consideration. We then present an analysis showing that if values are incorporated into assessing, characterizing and managing risk, the results of risk assessments will more accurately reflect the needs of various stakeholders. Originating from an acknowledgement of the inherent uncertainty and value-laden nature of risk assessment, the precautionary principle (and later, the multi-criteria, integrated risk assessment), provides a direction for further research and policy development.

  16. Home Energy Assessments

    ScienceCinema (OSTI)

    Dispenza, Jason

    2013-05-29T23:59:59.000Z

    A home energy assessment, also known as a home energy audit, is the first step to assess how much energy your home consumes and to evaluate what measures you can take to make your home more energy efficient. An assessment will show you problems that may, when corrected, save you significant amounts of money over time. This video shows some of the ways that a contractor may test your home during an assessment, and helps you understand how an assessment can help you move toward energy savings. Find out more at: http://www.energysavers.gov/your_home/energy_audits/index.cfm/mytopic=11160

  17. Research progress in dynamic security assessment

    SciTech Connect (OSTI)

    Not Available

    1982-12-01T23:59:59.000Z

    Areas discussed are power system modeling, state estimation, structure decomposition, state forecasting, clustering and security measure development. A detailed dynamic model of a multi-machine power system has been developed. A process state estimator was developed to estimate the long-term dynamic behavior of the power system. The algorithm is identical to the extended Kalman filter but has a modified process noise driving term. A two-stage structure estimation technique was proposed for identifying the power system network configuration. Two approaches to structure decomposition were investigated. A time-scale decomposition of the system equations, based on a singular perturbation approach, was evaluated using a detailed model of a generating system. Spatial decomposition was examined by applying an optimal network decomposition technique to a 39-bus test system. Stochastic approximation based approaches to estimator simplification were examined. Explicit expressions were obtained for the evolution of the first and second moments of the system state. Research into security measures proceeded in three directions. The first area involves viewing the security assessment problem as a hyperplane crossing problem for a stochastic process. The second approach examined the stability of an unforced linear system where the system coefficients are subject to future jumps. The third area of research has led to the formulation of a security measure suitable for on-line assessment of transient stability.

  18. Engineering solutions for the long-term stabilization and isolation of uranium mill tailings in the United States

    SciTech Connect (OSTI)

    Lommler, J.C. [UMTRA Project AGRA Earth and Environmental, Inc., Albuquerque, NM (United States); Cormier, C. [Department of Energy, Albuquerque, NM (United States); Sanders, D.R. [Morrison Knudsen Environmental Services, San Francisco, CA (United States)

    1995-12-31T23:59:59.000Z

    Engineering solutions for the safe and environmentally protective disposal and isolation of uranium mill tailings in the United States include many factors. Among the factors discussed in this paper are cover design, materials selection, civil engineering, erosive forces, and cost effectiveness. Stabilization and isolation of tailings from humans and the environment are the primary goals of United States uranium mill tailings control standards. The performance of cover designs is addressed with respect to water infiltration, radon exhalation, geotechnical stability, erosion protection, human and animal intrusion prevention, and longevity. The need for and frequency of surveillance efforts to ensure continued disposal system performance are also assessed.

  19. Survey of Biomass Resource Assessments and Assessment Capabilities

    E-Print Network [OSTI]

    Survey of Biomass Resource Assessments and Assessment Capabilities in APEC Economies Energy ...................................................................................................................................4 Biomass Resource Assessment Products and Assessment Methodologies, Department of Industry, Tourism and Resources, Australia Ms. Siti Hafsah, Office of the Minister of Energy

  20. Compass Financial Stability and Savings Program

    E-Print Network [OSTI]

    Fraden, Seth

    Compass Financial Stability and Savings Program Pilot Evaluation: Second Year Report April 2013 Prepared for Compass Working Capital Boston, MA Prepared by Delia Kimbrel, Research Associate Institute, MA #12;Compass Working Capital Compass Working Capital ("Compass") provides incentive-based financial

  1. Compass Financial Stability and Savings Program

    E-Print Network [OSTI]

    Fraden, Seth

    Compass Financial Stability and Savings Program Pilot Evaluation: Final Report 1 April 2014 Prepared for Compass Working Capital Boston, MA Prepared by Delia Kimbrel, Research Associate Sandra Venner Brandeis University, Waltham, MA #12;2 Compass Working Capital ("Compass") provides incentive

  2. A Stability Index for Local Effectivity Functions

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Stability Index for Local Effectivity Functions Joseph Abdou October 9, 2009 Abstract We study - France; email: abdou@univ-paris1.fr 1 halshs-00389003,version1-14Oct2009 Author manuscript, published setting (see Abdou and Keiding (2003) for the general notion of effectiv- ity structure), we shall focus

  3. A DOUBLY STABILIZED BUNDLE METHOD FOR NONSMOOTH ...

    E-Print Network [OSTI]

    2013-04-13T23:59:59.000Z

    Apr 13, 2013 ... As is widely accepted, the most efficient optimization techniques ... (ii) a stability center xk (some previous iterate, usually the “best” point generated by the iterative .... unit-commitment problem in the energy sector, two-stage stochastic linear programming, and ..... data, the case analyzed in Section 4 below.

  4. Power Systems Stability Control : Reinforcement Learning Framework

    E-Print Network [OSTI]

    Wehenkel, Louis

    1 Power Systems Stability Control : Reinforcement Learning Framework Damien Ernst, Member, IEEE systems. We describe some challenges in power system control and discuss how some of those challenges with the real power system and the off-line mode in which the interaction occurs with a simulation model

  5. The effect of convection on pulsational stability

    E-Print Network [OSTI]

    G. Houdek

    2008-10-29T23:59:59.000Z

    A review on the current state of mode physics in classical pulsators is presented. Two, currently in use, time-dependent convection models are compared and their applications on mode stability are discussed with particular emphasis on the location of the Delta Scuti instability strip.

  6. Threedimensional stability of Burgers vortices Thierry Gallay

    E-Print Network [OSTI]

    Gallay, Thierry

    Three­dimensional stability of Burgers vortices Thierry Gallay Institut Fourier Universitâ??e de Grenoble I BP 74 38402 Saint­Martin­d'Hâ??eres, France Thierry.Gallay@ujf­grenoble.fr Yasunori Maekawa and then in the general case by Gallay and Wayne [9], see also [2, 12, 13]. Moreover, a lot is known about the spectrum

  7. Metal Nanowires: Quantum Transport, Cohesion, and Stability

    E-Print Network [OSTI]

    Stafford, Charles

    nature's ultimate limit of conductors down to a single atom in thickness. In the past eight years. In this article, we discuss our generalization of the free-electron model to describe nanoscale conductors [15 to surface tension [23], but we find that electron-shell effects can stabilize arbitrarily long nanowires [22

  8. PID Controller Synthesis with Specified Stability Requirement

    E-Print Network [OSTI]

    Gundes, A. N.

    PID Controller Synthesis with Specified Stability Requirement for Some Classes of MIMO Systems T. S+Integral+Derivative (PID) con- trollers, where the closed-loop poles can be assigned to the left of an axis shifted PID-controllers with this property of small negative real-part assignability of closed-loop poles

  9. Amphiphiles for protein solubilization and stabilization

    DOE Patents [OSTI]

    Gellman, Samuel Helmer; Chae, Pil Seok; Laible, Philip D.; Wander, Marc J.

    2012-09-11T23:59:59.000Z

    The invention provides amphiphiles for manipulating membrane proteins. The amphiphiles can feature carbohydrate-derived hydrophilic groups and branchpoints in the hydrophilic moiety and/or in a lipophilic moiety. Such amphiphiles are useful as detergents for solubilization and stabilization of membrane proteins, including photosynthetic protein superassemblies obtained from bacterial membranes.

  10. http://www.pppl.gov Stabilization

    E-Print Network [OSTI]

    Zakharov, Leonid E.

    MHD. 2. Flow pattern of magnetic propulsion. 3. Theory of stabilization. 4. Flow locked mode. 5 of magnetic propulsion (cont.) Magnetic propulsion makes MHD of intense lithium streams compatible 8 #12; 2 Flow pattern of magnetic propulsion (cont.) Driving pressure pwall j outlet > 1 atm; p wall

  11. Agent Based Power System Transient Stability Enhancement

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Agent Based Power System Transient Stability Enhancement M. S. Rahman, Student Member, IEEE, M. J. Hossain and H. R. Pota Abstract--This paper describes an intelligent agent approach to power system fault electric power system is most capital investive and vast complex network with increasing interconnections

  12. Stabilization of Mechanical Systems Using Controlled Lagrangians

    E-Print Network [OSTI]

    Marsden, Jerrold

    for the problem of sta- bilization of an inverted pendulum on a cart and for the problem of stabilization­91­57556, AFOSR grant F49620-96-1- 0100, a Guggenheim Fellowship and the Inst. for Advanced Study. 2 can make use of energy methods which automati- cally provide a Lyapunov function for choosing control

  13. Stability, Energetics, and Turbulent Transport in

    E-Print Network [OSTI]

    Torquato, Salvatore

    fields" Department of Astrophysical Sciences Spring Colloquium Steve Cowley (UK Atomic Energy Authority of solar-wind turbulence" Chris Chen (UC Berkeley) 2:40pm "Energy spectra in MHD turbulenceStability, Energetics, and Turbulent Transport in Astrophysical, Fusion, and Solar Plasmas 8

  14. Sulfate induced heave in lime stabilized soil

    E-Print Network [OSTI]

    Bredenkamp, Sanet

    1994-01-01T23:59:59.000Z

    The addition of hydrated lime to clay soils is one of the most common methods of soil stabilization. However, when sulfates are present in the soil, the calcium in the lime reacts with the sulfates to form ettringite, an expandable mineral...

  15. PLUTONIUM FINISHING PLANT (PFP) STABILIZATION & PACKAGING PROJECT

    SciTech Connect (OSTI)

    GERBER, M.S.

    2004-01-14T23:59:59.000Z

    Fluor Hanford is pleased to submit the Plutonium Finishing Plant (PFP) Stabilization and Packaging Project (SPP) for consideration by the Project Management Institute as Project of the Year for 2004. The SPP thermally stabilized and/or packaged nearly 18 metric tons (MT) of plutonium and plutonium-bearing materials left in PFP facilities from 40 years of nuclear weapons production and experimentation. The stabilization of the plutonium-bearing materials substantially reduced the radiological risk to the environment and security concerns regarding the potential for terrorists to acquire the non-stabilized plutonium products for nefarious purposes. The work was done In older facilities which were never designed for the long-term storage of plutonium, and required working with materials that were extremely radioactive, hazardous, pyrophoric, and In some cases completely unique. I n some Instances, one-of-a-kind processes and equipment were designed, installed, and started up. The SPP was completed ahead of schedule, substantially beating all Interim progress milestone dates set by the Defense Nuclear Facilities Safety Board (DNFSB) and in the Hanford Site's Federal Facility Agreement and Consent Order (Tri-Party Agreement or TPA), and finished $1-million under budget.

  16. Lateral stability of long precast concrete beams

    E-Print Network [OSTI]

    Burgoyne, Chris

    buckling L length of beam vx lateral deŻection measured in the minor- axis direction (which rotates with yLateral stability of long precast concrete beams T. J. Stratford, BA, BEng, and C. J. Burgoyne, BA, making them more susceptible to buckling failure. This paper shows that once the beam is positioned

  17. ROCTECtm STABILIZATION TREATMENT OF WERF ASH

    SciTech Connect (OSTI)

    Paul A. Lessing; William J. Quapp; Gary Renlund; Bob Clark; Colin Hundley; James Cornwell; Dave Schlier; John Bulko; Gene Pollack

    1998-10-01T23:59:59.000Z

    The objective of this project is to demonstrate a process to stabilize mixed waste flyash generated by the combustion of mixed waste at the Idaho National Engineering & Environmental Laboratory's (INEEL's) Waste Experimental Reduction Facility (WERF) incinerator such that it will meet Resource Conservation and Recovery Act (RCRA) Land Disposal Restrictions (LDRs) Universal Treatment Standards.

  18. Safety evaluation of interim stabilization of non-stabilized single-shell watch list tanks

    SciTech Connect (OSTI)

    Stahl, S.M.

    1994-12-30T23:59:59.000Z

    The report provides a summation of the status of safety issues associated with interim stabilization of Watch List SSTs (organic, ferrocyanide, and flammable gas), as extracted from recent safety analyses, including the Tank Farms Accelerated Safety Analysis efforts.

  19. Sufficient Conditions for Uniform Stability of Regularization Algorithms

    E-Print Network [OSTI]

    Poggio, Tomaso

    2009-12-01T23:59:59.000Z

    In this paper, we study the stability and generalization properties of penalized empirical-risk minimization algorithms. We propose a set of properties of the penalty term that is sufficient to ensure uniform ?-stability: ...

  20. Relation between viscosity and stability for heavy oil emulsions

    E-Print Network [OSTI]

    Ye, Sherry Qianwen

    1998-01-01T23:59:59.000Z

    The relation between viscosity and stability has been hics. found by investigating the effect of surfactant concentration on emulsion stability. Based on the Bingham plastic model for viscosity as a function of shear rate, two parameters were found...

  1. Title of dissertation: MAGNETOHYDRODYNAMIC EQUILIBRIUM AND STABILITY OF

    E-Print Network [OSTI]

    Anlage, Steven

    ABSTRACT Title of dissertation: MAGNETOHYDRODYNAMIC EQUILIBRIUM AND STABILITY OF CENTRIFUGALLY CONFINED PLASMAS Yi-Min Huang, Doctor of Philosophy, 2004 Dissertation directed by: Professor Adil B. This dissertation addresses the equilib- rium and stability of this configuration within the framework

  2. Electronic Structure and Stability of Semiconducting Graphene Nanoribbons

    E-Print Network [OSTI]

    Hod, Oded

    Electronic Structure and Stability of Semiconducting Graphene Nanoribbons Vero´nica Barone, Oded stability of semiconducting graphene nanoribbons. We consider ribbons with different edge nature including band structure of graphene (a single infinite sheet of graphite). Depending on their chirality

  3. Upper bounds on minimum distance of nonbinary quantum stabilizer codes

    E-Print Network [OSTI]

    Kumar, Santosh

    2005-11-01T23:59:59.000Z

    The most popular class of quantum error correcting codes is stabilizer codes. Binary quantum stabilizer codes have been well studied, and Calderbank, Rains, Shor and Sloane (July 1998) have constructed a table of upper bounds on the minimum distance...

  4. Effects of additives on the stability of electrolytes for all...

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

    Effects of additives on the stability of electrolytes for all-vanadium redox flow batteries. Effects of additives on the stability of electrolytes for all-vanadium redox flow...

  5. The Stability of Organic Solvents and Carbon Electrode in Nonaqueous...

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

    The Stability of Organic Solvents and Carbon Electrode in Nonaqueous Li-O2 Batteries. The Stability of Organic Solvents and Carbon Electrode in Nonaqueous Li-O2 Batteries....

  6. Stability of Biomass-derived Black Carbon in Soils . | EMSL

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

    Stability of Biomass-derived Black Carbon in Soils . Stability of Biomass-derived Black Carbon in Soils . Abstract: Black carbon (BC) may play an important role in the global C...

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

    E-Print Network [OSTI]

    Piyaratne, Hathurusinghege Dulip Bandara

    2014-11-27T23:59:59.000Z

    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 ...

  8. Stability of Biodiesel and Biodiesel Blends: Interim Report

    SciTech Connect (OSTI)

    McCormick, R. L.; Alleman, T. L.; Waynick, J. A.; Westbrook, S. R.; Porter, S.

    2006-04-01T23:59:59.000Z

    This is an interim report for a study of biodiesel oxidative stability. It describes characterization and accelerated stability test results for 19 B100 samples and six diesel fuels.

  9. Analysis of ray stability and caustic formation in a layered moving fluid medium

    E-Print Network [OSTI]

    Bergman, David R

    2015-01-01T23:59:59.000Z

    Caustic formation occurs within a ray skeleton as optical or acoustic fields propagate in a medium with variable refractive properties and are unphysical, their presence being an artifact of the ray approximation of the field, and methods of correcting the field near a caustic are well known. Differential geometry provides a novel approach to calculating acoustic intensity, assessing ray stability and locating caustics in acoustic ray traces when the properties of medium are completely arbitrary by identifying points on the caustic with conjugate points along various rays. The method of geodesic deviation is applied to the problem of determining ray stability and locating caustics in 2-dimensional acoustic ray traces in a layered moving medium. Specifically, a general treatment of caustic formation in sound ducts and in piecewise continuous media is presented and applied to various idealized and realistic scenarios.

  10. Stability analysis of direct contact heat exchangers subject to system perturbations. Final report, Task 2

    SciTech Connect (OSTI)

    Jacobs, H.R.

    1985-01-01T23:59:59.000Z

    This report includes a project summary, copies of two papers resulting from the work and the Ph.D. Dissertation of Dr. Mehdi Golafshani entitled, ''Stability of a Direct Contact Heat Exchanger''. Specifically, the work deals with the operational stability of a spray column type heat exchanger subject to disturbances typical of those which can occur for geothermal applications. A computer program was developed to solve the one-dimensional transient two-phase flow problem and it was applied to the design of a spray column. The operation and design of the East Mesa 500kW/sub e/ direct contactor was assessed. It is shown that the heat transfer is governed by the internal resistance of the dispersed phase. In fact, the performance is well-represented by diffusion of heat within the drops. 5 refs.

  11. ESCO PRELIMINARY ASSESSMENT TEMPLATE

    Broader source: Energy.gov [DOE]

    Document presents a template and example to help energy service companies (ESCOs) conduct preliminary assessments required for Federal energy savings performance contract (ESPC) projects.

  12. Hoisting & Rigging Assessment Form

    Broader source: Energy.gov [DOE]

      Assess the institutional and department/division hoisting and rigging (including forklift, overhead cranes small hoists, and mobile cranes) requirements, policies, procedures, and work practices...

  13. Sandia Energy - Assessment Program

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

    petroleum storage and refineries; and transportation systems. Assessments were an early way to help clarify the systems as they existed in the field. This knowledge has...

  14. NATURAL GAS MARKET ASSESSMENT

    E-Print Network [OSTI]

    CALIFORNIA ENERGY COMMISSION NATURAL GAS MARKET ASSESSMENT PRELIMINARY RESULTS In Support.................................................................................... 6 Chapter 2: Natural Gas Demand.................................................................................................. 10 Chapter 3: Natural Gas Supply

  15. Stabilized finite element methods with fast iterative solution ...

    E-Print Network [OSTI]

    2003-04-11T23:59:59.000Z

    Computer methods in applied mechanics and engineering. Stabilized finite ... Department of Mathemutics, Purdue Universi@, 1395 Mathematical Science ...

  16. Lyapunov stability of flowing magnetohydrodynamic plasmas surrounded by resistive walls

    SciTech Connect (OSTI)

    Tasso, H. [Max-Planck-Institut fuer Plasmaphysik, Euratom Association, 85748 Garching (Germany); Throumoulopoulos, G. N. [Association Euratom-Hellenic Republic, Department of Physics, University of Ioannina, GR 451 10 Ioannina (Greece)

    2011-07-15T23:59:59.000Z

    A general stability condition for plasma-vacuum systems with resistive walls is derived by using the Frieman Rotenberg Lagrangian stability formulation [Rev. Mod. Phys. 32, 898 (1960)]. It is shown that the Lyapunov stability limit for external modes does not depend upon the gyroscopic term but upon the sign of the perturbed potential energy only. In the absence of dissipation in the plasma such as viscosity, it is expected that the flow cannot stabilize the system.

  17. Blind topological measurement-based quantum computation

    E-Print Network [OSTI]

    Tomoyuki Morimae; Keisuke Fujii

    2012-09-06T23:59:59.000Z

    Blind quantum computation is a novel secure quantum-computing protocol that enables Alice, who does not have sufficient quantum technology at her disposal, to delegate her quantum computation to Bob, who has a fully fledged quantum computer, in such a way that Bob cannot learn anything about Alice's input, output and algorithm. A recent proof-of-principle experiment demonstrating blind quantum computation in an optical system has raised new challenges regarding the scalability of blind quantum computation in realistic noisy conditions. Here we show that fault-tolerant blind quantum computation is possible in a topologically protected manner using the Raussendorf-Harrington-Goyal scheme. The error threshold of our scheme is 0.0043, which is comparable to that (0.0075) of non-blind topological quantum computation. As the error per gate of the order 0.001 was already achieved in some experimental systems, our result implies that secure cloud quantum computation is within reach.

  18. CONFIDENCE MEASURE BASED MODELADAPTATION FOR SPEAKER VERIFICATION

    E-Print Network [OSTI]

    Dupont, Stéphane

    Polytechnique de Mons ­ Multitel Research Center Avenue Copernic, 1, 7000 Mons Belgium Abstract Confidence

  19. 5, 76477768, 2005 Measurement-based

    E-Print Network [OSTI]

    Boyer, Edmond

    Space Flight Center (GSFC), Greenbelt, USA 2 Goddard Earth Science and Technology Center, University University of Washington, Seattle, USA 5 Laboratoire des Sciences du Climat et de l'Environnement, CEA Laboratoire d'Optique Atmosph´erique (LOA), Villeneuve d'Ascq, France 13 NOAA Geophysical Fluid Dynamics

  20. WHEN DOES FINANCIAL SECTOR (IN)STABILITY INDUCE FINANCIAL REFORMS?

    E-Print Network [OSTI]

    Boyer, Edmond

    WHEN DOES FINANCIAL SECTOR (IN)STABILITY INDUCE FINANCIAL REFORMS? Susie LEE Ingmar SCHUMACHER (in)stability induce financial reforms? Susie Lee1 Ingmar Schumacher2 October 26, 2011 Abstract The article studies whether financial sector (in)stability had an effect on reforms in the fi- nancial sector

  1. Advanced PID type fuzzy logic power system stabilizer

    SciTech Connect (OSTI)

    Hiyama, Takashi; Kugimiya, Masahiko; Satoh, Hironori (Kumamoto Univ. (Japan). Dept. of Electrical Engineering and Computer Science)

    1994-09-01T23:59:59.000Z

    An advanced fuzzy logic control scheme has been proposed for a micro-computer based power system stabilizer to enhance the overall stability of power systems. The proposed control scheme utilizes the PID information of the generator speed. The input signal to the stabilizer is the real power output of a study unit. Simulations show the effectiveness of the advanced fuzzy logic control scheme.

  2. Local Exponential H2 Stabilization of a 2 2 Quasilinear

    E-Print Network [OSTI]

    Bastin, Georges

    of boundary stabilization for a quasilinear 2Ă?2 system of first-order hyperbolic PDEs. We design a full stability of the closed-loop system. The proof of stability is based on the construction of a strict pipelines or road traffic models. This problem has been previously considered for 2 Ă? 2 systems [8] and even

  3. Polymeric Stabilized Emulsions: Steric Effects and Deformation in Soft Systems

    E-Print Network [OSTI]

    Chan, Derek Y C

    used to control emulsion and foam stability.1,2 An understanding of the underlying stabilizing) was used to extend these studies to a larger range of underlying surfaces including zirconia,8 glass,9 and foams at low water content and to operate at the edge of stability, it is crucial to gain a more

  4. Plutonium stabilization and handling (PuSH)

    SciTech Connect (OSTI)

    Weiss, E.V.

    1997-01-23T23:59:59.000Z

    This Functional Design Criteria (FDC) addresses construction of a Stabilization and Packaging System (SPS) to oxidize and package for long term storage remaining plutonium-bearing special nuclear materials currently in inventory at the Plutonium Finishing Plant (PFP), and modification of vault equipment to allow storage of resulting packages of stabilized SNM for up to fifty years. The major sections of the project are: site preparation; SPS Procurement, Installation, and Testing; storage vault modification; and characterization equipment additions. The SPS will be procured as part of a Department of Energy nationwide common procurement. Specific design crit1460eria for the SPS have been extracted from that contract and are contained in an appendix to this document.

  5. HVDC models used in stability studies

    SciTech Connect (OSTI)

    Johnson, B.K.

    1989-04-01T23:59:59.000Z

    A new generation of detailed models for HVDC systems has recently been applied in power system stability programs. These models represent the high speed dynamics of the converter controllers as well as the L/R dynamics of the dc transmission. Older dc models such as those described in reference which are based upon pseudo-steady state relationships are however still in general use. The latter models remain popular since they require a minimum of data and significantly less computer resources than the detailed models. The following questions therefore need to be answered concerning the two types of models: (1) To what extent is simulation accuracy impacted by using the older HVDC model. (2) Is the difference in precision significant compared to other uncertainties which are inherent in stability calculations. This paper addresses these questions and also considers a third type of HVDC model described in Appendix I which relieves some of the assumptions associated with the pseudo steady state models.

  6. On Stabilization of Nonautonomous Nonlinear Systems

    SciTech Connect (OSTI)

    Bogdanov, A. Yu. [Faculty of Mathematics and IT, Ulyanovsk State University, 42 Leo Tolstoy str., Ulyanovsk, 432970 (Russian Federation)

    2008-10-30T23:59:59.000Z

    The procedures to obtain the sufficient conditions of asymptotic stability for nonlinear nonstationary continuous-time systems are discussed. We consider different types of the following general controlled system: x = X(t,x,u) = F(t,x)+B(t,x)u, x(t{sub 0}) = x{sub 0}. (*) The basis of investigation is limiting equations, limiting Lyapunov functions, etc. The improved concept of observability of the pair of functional matrices is presented. By these results the problem of synthesis of asymptotically stable control nonlinear nonautonomous systems (with linear parts) involving the quadratic time-dependent Lyapunov functions is solved as well as stabilizing a given unstable system with nonlinear control law.

  7. Stability Analysis of Large-Scale Incompressible Flow Calculations on Massively Parallel Computers 1 Stability Analysis of Large-

    E-Print Network [OSTI]

    Stability Analysis of Large-Scale Incompressible Flow Calculations on Massively Parallel Computers 1 Stability Analysis of Large- Scale Incompressible Flow Calculations on Massively Parallel disturbances aligned with the associated eigenvectors will grow. The Cayley transformation, cou- pled

  8. Stabilization of spent calcium-based sorbent

    SciTech Connect (OSTI)

    Shires, P.J.; Katta, S.; Henningsen, G.B.

    1994-10-01T23:59:59.000Z

    The overall objective of this project is to obtain experimental data on the reactions of calcium-based sorbents applicable to both air-blown coal gasification systems and second generation fluid bed coal combustion systems (partial gasification). The project is a 40-month effort. A key technical issue for the utilization of calcium sorbents in advanced coal technologies is the subsequent stabilization of the solid wastes (calcium sulfide/ash) produced by such systems.

  9. Oxygen stabilized zirconium vanadium intermetallic compound

    DOE Patents [OSTI]

    Mendelsohn, Marshall H. (Woodridge, IL); Gruen, Dieter M. (Downers Grove, IL)

    1982-01-01T23:59:59.000Z

    An oxygen stabilized intermetallic compound having the formula Zr.sub.x OV.sub.y where x=0.7 to 2.0 and y=0.18 to 0.33. The compound is capable of reversibly sorbing hydrogen at temperatures from -196.degree. C. to 450.degree. C. at pressures down to 10.sup.-6 Torr. The compound is also capable of selectively sorbing hydrogen from gaseous mixtures in the presence of CO and CO.sub.2.

  10. Cyclic Imide Dioxime: Formation and Hydrolytic Stability

    SciTech Connect (OSTI)

    Kang, S.O. [University of Kansas; Vukovic, Sinisa [ORNL; Custelcean, Radu [ORNL; Hay, Benjamin [ORNL

    2012-01-01T23:59:59.000Z

    Poly(acrylamidoximes) play an important role in the uranium extraction from seawater. The present work reports solution studies of simple analogs to address the formation and stability of two binding sites present in these polymers, open-chain amidoximes and cyclic imide dioximes, including: 1) conditions that maximize the formation of the cyclic form, 2) existence of a base-induced conversion from open-chain to cyclic form, and 3) degradation under acid and base conditions.

  11. Discrete Symmetry and Stability in Hamiltonian Dynamics

    E-Print Network [OSTI]

    Tassos Bountis; George Chechin; Vladimir Sakhnenko

    2010-05-31T23:59:59.000Z

    In this tutorial we address the existence and stability of periodic and quasiperiodic orbits in N degree of freedom Hamiltonian systems and their connection with discrete symmetries. Of primary importance in our study are the nonlinear normal modes (NNMs), i.e periodic solutions which represent continuations of the system's linear normal modes in the nonlinear regime. We examine the existence of such solutions and discuss different methods for constructing them and studying their stability under fixed and periodic boundary conditions. In the periodic case, we employ group theoretical concepts to identify a special type of NNMs called one-dimensional "bushes". We describe how to use linear combinations such NNMs to construct s(>1)-dimensional bushes of quasiperiodic orbits, for a wide variety of Hamiltonian systems and exploit the symmetries of the linearized equations to simplify the study of their destabilization. Applying this theory to the Fermi Pasta Ulam (FPU) chain, we review a number of interesting results, which have appeared in the recent literature. We then turn to an analytical and numerical construction of quasiperiodic orbits, which does not depend on the symmetries or boundary conditions. We demonstrate that the well-known "paradox" of FPU recurrences may be explained in terms of the exponential localization of the energies Eq of NNM's excited at the low part of the frequency spectrum, i.e. q=1,2,3,.... Thus, we show that the stability of these low-dimensional manifolds called q-tori is related to the persistence or FPU recurrences at low energies. Finally, we discuss a novel approach to the stability of orbits of conservative systems, the GALIk, k=2,...,2N, by means of which one can determine accurately and efficiently the destabilization of q-tori, leading to the breakdown of recurrences and the equipartition of energy, at high values of the total energy E.

  12. How Nature Fine Tunes Protein Stability

    E-Print Network [OSTI]

    Wickstrom, Megan

    2007-07-14T23:59:59.000Z

    UNDERGRADUATE RESEARCH FELLOWS April 2007 Major: Biology ii ABSTRACT How Nature Fine Tunes Protein Stability (April 2007) Megan Wickstrom Department of Biology Texas A&M University Fellows Co-Advisors: Dr. C. Nick Pace Department of Medical Biochemistry... appreciate their loving support. Also, this thesis is dedicated to my fiancé who has been a constant source of motivation and inspiration. v ACKNOWLEDGMENTS I wish to express my sincere thanks and appreciation to my supervisor and mentor, Dr. C. Nick Pace...

  13. The Dark Energy Star and Stability analysis

    E-Print Network [OSTI]

    Piyali Bhar; Farook Rahaman

    2015-01-12T23:59:59.000Z

    We have proposed a new model of dark energy star consisting of five zones namely, solid core of constant energy density, the thin shell between core and interior, an inhomogeneous interior region with anisotropic pressures, thin shell and the exterior vacuum region. We have discussed various physical properties. The model satisfies all the physical requirements. The stability condition under small linear perturbation has also been discussed.

  14. RELAP-7 Numerical Stabilization: Entropy Viscosity Method

    SciTech Connect (OSTI)

    R. A. Berry; M. O. Delchini; J. Ragusa

    2014-06-01T23:59:59.000Z

    The RELAP-7 code is the next generation nuclear reactor system safety analysis code being developed at the Idaho National Laboratory (INL). The code is based on the INL's modern scientific software development framework, MOOSE (Multi-Physics Object Oriented Simulation Environment). The overall design goal of RELAP-7 is to take advantage of the previous thirty years of advancements in computer architecture, software design, numerical integration methods, and physical models. The end result will be a reactor systems analysis capability that retains and improves upon RELAP5's capability and extends the analysis capability for all reactor system simulation scenarios. RELAP-7 utilizes a single phase and a novel seven-equation two-phase flow models as described in the RELAP-7 Theory Manual (INL/EXT-14-31366). The basic equation systems are hyperbolic, which generally require some type of stabilization (or artificial viscosity) to capture nonlinear discontinuities and to suppress advection-caused oscillations. This report documents one of the available options for this stabilization in RELAP-7 -- a new and novel approach known as the entropy viscosity method. Because the code is an ongoing development effort in which the physical sub models, numerics, and coding are evolving, so too must the specific details of the entropy viscosity stabilization method. Here the fundamentals of the method in their current state are presented.

  15. 308 Building zone I stabilization and confinement

    SciTech Connect (OSTI)

    Metcalf, I.L.; Schwartz, K.E.; Rich, J.W.; Benecke, M.W.; Lanham, G.W.

    1994-08-01T23:59:59.000Z

    The 308 Building located on the Hanford Site near Richland, Washington, is currently in transition to shutdown status. After this transition is complete, the facility will be maintained/surveilled and given to the U.S. Department of Energy Office of Facility Transition and Management (EM-60) for utilization, remedial action, or decontamination and decommissioning (D&D). This may require that the facility be maintained in the shutdown status for as long as 30 yrs. To date, all of the special nuclear material (SNM) has been removed, potential fuel supply equipment preserved, surplus materials and equipment excessed, and enclosure cleanup and stabilization completed. A major activity in support of the 308 Building shutdown was the cleanup and stabilization of the enclosures and surface contamination areas. This document discusses the specific designs, processes, and methods used to stabilize and confine the radiological material within the enclosure and exhaust ducts to allow the shutdown of the active support systems. The process and designs employed were effective, yet simple, and maximized the use of current technologies and commercial products.

  16. 308 Building Zone I stabilization and confinement

    SciTech Connect (OSTI)

    Metcalf, I.L.; Schwartz, K.E.; Rich, J.W.; Benecke, M.W.; Rasmussen, D.E.

    1993-10-01T23:59:59.000Z

    The 308 Building (Fast Flux Test Facility [FFTF] fuel supply) at the Hanford Site, located in Richland, Washington, is currently in transition to shutdown status. After shutdown, the facility will be maintained/surveilled and turned over to the U.S. Department of Energy (DOE) Office of Facility Transition and Management (EM-60) for utilization, remedial action, or decontamination and decommissioning (D&D). This may require that the facility be maintained in the shutdown mode for up to 30 years. To date, all of the special nuclear material (SNM) has been removed from the facility, potential fuel supply equipment has been preserved, surplus materials and equipment have been excessed, and enclosure cleanup and stabilization has begun. Shutdown planning has been completed, which outlines the major tasks, scope, methodology, and timing for the shutdown activities. A major activity in support of the 308 Building shutdown is the cleanup and stabilization of the enclosures and surface contamination areas. This document identifies the specific designs, processes, and methods to stabilize and confine the radiological material within the enclosures and exhaust ducts to allow shutdown of the active support systems. The designs and steps planned will be effective, are simple, and make maximum use of current technologies and commercial items.

  17. Assessments A Training Manual

    E-Print Network [OSTI]

    Modern Industrial Assessments A Training Manual Version 2.0 Sponsored by: Produced by: Dr. Michael. Modern Industrial Assessments: A Training Manual, grew from the desires of the United States Department conservation and waste minimization / pollution prevention training courses and information agencies sponsored

  18. Service Assessment HURRICANE FRAN

    E-Print Network [OSTI]

    Service Assessment HURRICANE FRAN August 28 - September 8, 1996 U.S.Department of Commerce National-12 Visible, 753 a.m. EDT, September4, 1996. #12;Service Assessment HURRICANE FRAN August 28 Bureau Hurricane Series ERRATA NOTICE One or more conditions of the original document may affect

  19. Final Draft ENVIRONMENTAL ASSESSMENT

    E-Print Network [OSTI]

    Waliser, Duane E.

    Final Draft ENVIRONMENTAL ASSESSMENT FOR THE CONSTRUCTION, MODIFICATION, AND OPERATION OF THREE OF THE CONSTELLATION PROGRAM, JOHN F. KENNEDY SPACE CENTER, FLORIDA Abstract This Environmental Assessment addresses AERONAUTICS AND SPACE ADMINISTRATION JOHN F. KENNEDY SPACE CENTER ENVIRONMENTAL PROGRAM OFFICE KENNEDY SPACE

  20. Assessment Statute Academic Policy

    E-Print Network [OSTI]

    Frean, Marcus

    ) and reliability (accurately representing the student's performance). #12;Assessment Statute Academic Policy to write clearly and accurately may be an important component of the assessment. 4.2 Passing a Course (a items. Lectures, tutorials, electronic and other distance- learning resources, practical and fieldwork

  1. INTERMOUNTAIN INDUSTRIAL ASSESSMENT CENTER

    SciTech Connect (OSTI)

    MELINDA KRAHENBUHL

    2010-05-28T23:59:59.000Z

    The U. S. Department of Energy’s Intermountain Industrial Assessment Center (IIAC) at the University of Utah has been providing eligible small- and medium-sized manufacturers with no-cost plant assessments since 2001, offering cost-effective recommendations for improvements in the areas of energy efficiency, pollution prevention, and productivity improvement.

  2. Environmental assessment of electricity scenarios with Life Cycle Assessment

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    been assessed with Life Cycle Assessment (LCA) studies [1], [2], [3] and [4]. However environmentalEnvironmental assessment of electricity scenarios with Life Cycle Assessment Touria Larbi1 impacts assessment of scenarios is very rarely evaluated through a life cycle perspective partly because

  3. Saltstone Disposal Facility Mechanically Stabilized Earth Vault Closure Cap Degradation: Sensitivity Analysis

    SciTech Connect (OSTI)

    PHIFER, MARK

    2004-03-19T23:59:59.000Z

    As part of the current Saltstone Disposal Facility (SDF) Performance Assessment (PA) revision, Mechanically Stabilized Earth (MSE) vault closure cap degradation mechanisms and their impact upon filtration through the MSE vault closure cap were evaluated for the base case land use scenario (i.e. institutional control to pine forest). The degradation mechanisms evaluated included pine forest succession, erosion, and colloidal clay migration (Phifer 2003). Infiltration through the upper hydraulic barrier layer of the closure cap as determined by this evaluation will be utilized as the infiltration input to subsequent PORFLOW vadose zone contaminant transport modeling, which will also be performed as part of the PA revision.

  4. Recent progress in degradation and stabilization of organic solar cells

    SciTech Connect (OSTI)

    Cao, Huanqi; He, Weidong; Mao, Yiwu; Lin, Xiao; Ishikawa, Ken; Dickerson, James H.; Hess, Wayne P.

    2014-10-15T23:59:59.000Z

    Stability is of paramount importance in organic semiconductor devices, especially in organic solar cells (OSCs). Serious degradation in air limits wide applications of these flexible, light-weight and low-cost power-generation devices. Studying the stability of organic solar cells will help us understand degradation mechanisms and further improve the stability of these devices. There are many investigations into the efficiency and stability of OSCs. The efficiency and stability of devices even of the same photoactive materials are scattered in different papers. In particular, the extrinsic degradation that mainly occurs near the interface between the organic layer and the cathode is a major stability concern. In the past few years, researchers have developed many new cathodes and cathode buffer layers, some of which have astonishingly improved the stability of OSCs. In this review article, we discuss the recent developments of these materials and summarize recent progresses in the study of the degradation/stability of OSCs, with emphasis on the extrinsic degradation/stability that is related to the intrusion of oxygen and water. The review provides detailed insight into the current status of research on the stability of OSCs and seeks to facilitate the development of highly-efficient OSCs with enhanced stability.

  5. Ab-initio simulations of chemical stability indicators of the bis-DGA-type molecule and its radiation degradation products

    SciTech Connect (OSTI)

    Koubsky, T.; Kalvoda, L.; Drab, M. [Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Dept. of Solid State Engineering, Trojanova 13, 120 00 Prague 2 (Czech Republic)

    2013-07-01T23:59:59.000Z

    For hydrometallurgical treatment of the high level liquid waste (HLLW) in the DIAMEX and SANEX processes, organic compounds of the bis-DGA family are used as cation extractants in apolar solvents. For the compound of m-xylylene-bis-diglycolamide high distribution coefficients for Eu and Am were found. Since the environment of the process is highly radioactive and acidic (nitric acid), it is necessary to ensure the stability of the extractants. In order to analyse the process theoretically, the molecule of m-xylylene-bis- diglycolamide and two of its degradation products were simulated by the DFT computational methods (PBE, RPBE, BLYP, B3LYP) available within the simulation environment DMol{sup 3} 6.1 and Gaussian 09 software. The local chemical stability of some locations of the molecule was assessed from the calculated stability indicators (electrostatic potential, Fukui function, HOMO localization). In connection with the chemical treatment, especially the stability against an electrophilic attack was tested. The results of calculated bond orders and spatial distribution of electrostatic potential and HOMO were are successfully correlated with the local and general stability determined by the experiment. These results should be helpful for the further development of the separation process. (authors)

  6. Integrated assessment briefs

    SciTech Connect (OSTI)

    NONE

    1995-04-01T23:59:59.000Z

    Integrated assessment can be used to evaluate and clarify resource management policy options and outcomes for decision makers. The defining characteristics of integrated assessment are (1) focus on providing information and analysis that can be understood and used by decision makers rather than for merely advancing understanding and (2) its multidisciplinary approach, using methods, styles of study, and considerations from a broader variety of technical areas than would typically characterize studies produced from a single disciplinary standpoint. Integrated assessment may combine scientific, social, economic, health, and environmental data and models. Integrated assessment requires bridging the gap between science and policy considerations. Because not everything can be valued using a single metric, such as a dollar value, the integrated assessment process also involves evaluating trade-offs among dissimilar attributes. Scientists at Oak Ridge National Laboratory (ORNL) recognized the importance and value of multidisciplinary approaches to solving environmental problems early on and have pioneered the development of tools and methods for integrated assessment over the past three decades. Major examples of ORNL`s experience in the development of its capabilities for integrated assessment are given.

  7. 3-D Electrical Resistivity Tomography for Cliff Stability Assessment at Pointe du Hoc in Normandy, France

    E-Print Network [OSTI]

    Udphuay, Suwimon

    2010-01-14T23:59:59.000Z

    mass movements affect all geological materials and on steep slopes can constitute a significant geohazard. Mass movements are triggered by diverse causes such as heavy rains, marine wave attack at coastal locations, freeze?thaw cycles, soil creep... through freeze?thaw or salt crystallization can also be significant (Duperret et al., 2005). 4 A European scientific project, ROCC (Risk Of Cliff Collapse) was launched in order to identify the critical parameters leading to coastal cliff collapses...

  8. Phase Stability and Thermodynamic Assessment of the Np-Zr system 

    E-Print Network [OSTI]

    Bajaj, Saurabh

    2012-02-14T23:59:59.000Z

    / clustering trends of the bcc phase, a thermodynamic study is performed using the CALPHAD method. The calculated Np-Zr phase diagram is consistent with two sets of data: formation enthalpies of the bcc phase that are calculated with ab initio KKR...

  9. ASSESSMENT OF TECHNETIUM LEACHABILITY IN CEMENT-STABILIZED BASIN 43 GROUNDWATER BRINE

    SciTech Connect (OSTI)

    DUNCAN JB; COOKE GA; LOCKREM LL

    2009-07-20T23:59:59.000Z

    This report documents the effort to sequester technetium by the use of getters, reductants (tin(II) apatite and ferrous sulfate), sorbents (A530E and A532E ion exchange resins), and cementitious waste form. The pertechnetate form of technetium is highly soluble and mobile in aerobic (oxidizing) environments.

  10. Preliminary evaluation of a nondestructive ultrasonic technique for assessing stability of external skeletal fixation pins

    E-Print Network [OSTI]

    Dickens, James Robert

    1992-01-01T23:59:59.000Z

    35 35 39 42 43 46 48 ix CHAPTER Page IV VI LAMB WAVES Definition. Theory of Lamb Waves. Plate Equation Derivation Bar Wave Propagation. Discussion and Summary. EXPERIMENTAL TECHNIQUES. Ultrasonic and Computer Hardware. Probe... modes of Lamb waves traveling in a plate 45 51 Figure 4. 2 Phase speed curves for Lamb waves traveling in a steel plate 52 Figure 4. 3 Figure 5. 1 Group speed curves for Lamb waves traveling in a steel plate Experimental test setup showing...

  11. Practical stability assessment of distributed synchronous generators under variations in the system equilibrium conditions

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    synchro- nous generators driven by steam turbines have been connected to the system using a byproduct of Brazil, this sector of the national industry had already considerable experience in the usage of steam turbines, which have been extensively employed within its internal production [1­3]. As a result, several

  12. Assessing Stability of the Knee In Vitro Using Envelope Normalized Kinematics and Principal Component Analysis

    E-Print Network [OSTI]

    Fucinaro, Kaity

    2012-12-31T23:59:59.000Z

    %,&"(3!(+!*$%!+(77(8"39!*$%&"&:!!!!!!!!!!!!;&&%&&"39!3!?"*,(!@&"39!A35%7(4%!B(,).7"C%6!-"3%).*"2&!.36!D,"32"4.7!'()4(3%3*!;3.7/&"&!!!!!!!!!!!!!EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE!F,G!H(,"3!I.7%*&J/!!!!!!!!F.*%!;44,(5%6:!B(5%)=%,!KLM!NOKN!!!!! ! """! !"#$%&'()*+,)%-.!>*!8(176!3(*!$.5%!=%%3!4...&(3!.36!T($3&(3!'()4.3/M!+(,!+136"39!*$"&!,%&%.,2$G!!• #(!*$%!)%)=%,&!(+!*$%!AP4%,")%3*.7!T("3*!U"()%2$.3"2&!V%&%.,2$!H.=(,.*(,/:!;6.)!'/,M!I.,J!-()(&.M!<.)"!<$.7$(1=M!H.1,%3!0%,,"&M!-,"&*.!<.32$%C!.36!H"36.!F%33/G!#$%/!$.5%!$%74%6!)%!*(!*$"3J!=%/(36!)/!(83...

  13. Physical Stability of Long-Term Surface Barriers-Assessment of Potentially Disruptive Natural Events

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomassPPPOPetroleum Reserves Vision,4newsSolarrd Physical2A,] a

  14. Uv-Light Stabilization Additive Package For Solar Cell Module And Laminated Glass Applications

    DOE Patents [OSTI]

    Hanoka, Jack I. (Brookline, MA); Klemchuk, Peter P. (Watertown, CT)

    2002-03-05T23:59:59.000Z

    An ultraviolet light stabilization additive package is used in an encapsulant material that may be used in solar cell modules, laminated glass and a variety of other applications. The ultraviolet light stabilization additive package comprises a first hindered amine light stabilizer and a second hindered amine light stabilizer. The first hindered amine light stabilizer provides thermal oxidative stabilization, and the second hindered amine light stabilizer providing photo-oxidative stabilization.

  15. An Analysis of Two Industrial Assessment Center Extended Assessments

    E-Print Network [OSTI]

    Farouz, H. E.; Gafford, G. D.; Eggebrecht, J. A.; Heffington, W. M.

    The Industrial Assessment Center at Texas A&M University extended assessments by spending about two extra days at each of three manufacturing plants. The extended assessments are characterized by use of sophisticated electronic monitoring equipment...

  16. Assessing the catastrophic break up of Briksdalsbreen, Norway,1 associated with rapid climate change.2

    E-Print Network [OSTI]

    Southampton, University of

    about the potential influence of rapid climate change13 on the stability of major ice sheets retreat of Greenland's tidewater glaciers.32 33 Introduction34 The response of glaciers to climate change1 Assessing the catastrophic break up of Briksdalsbreen, Norway,1 associated with rapid climate

  17. Cancer risks attributable to low doses of ionizing radiation: Assessing what we really know

    E-Print Network [OSTI]

    Brenner, David Jonathan

    Triangle Park, NC 27711; jOffice of Radiation and Indoor Air, Environmental Protection Agency, WashingtonCancer risks attributable to low doses of ionizing radiation: Assessing what we really know David J Infirmary, Oxford OX2 6ME, United Kingdom; dRadiation and Genome Stability Unit, Medical Research Council

  18. Assessing the Impact of Wind Variability on Power System Small-Signal Reachability

    E-Print Network [OSTI]

    Liberzon, Daniel

    Assessing the Impact of Wind Variability on Power System Small-Signal Reachability Yu Christine-signal and transient stability [6]. In this regard, it has been acknowledged that, as the presence of wind in the power balancing in near real time [7]. This paper focuses on this last problem--the impact of wind penetration

  19. FILTER COMPONENT ASSESSMENT--CERAMIC CANDLES--

    SciTech Connect (OSTI)

    M.A. Alvin

    2004-04-23T23:59:59.000Z

    Efforts at Siemens Westinghouse Power Corporation (SWPC) have been focused on development of hot gas filter systems as an enabling technology for advanced coal and biomass-based gas turbine power generation applications. SWPC has been actively involved in the development of advanced filter materials and component configuration, has participated in numerous surveillance programs characterizing the material properties and microstructure of field tested filter elements, and has undertaken extended, accelerated filter life testing programs. This report summarizes the results of SWPC's filter component assessment efforts, identifying the performance and stability of porous monolithic, fiber reinforced, and filament wound ceramic hot gas candle filters, potentially for {ge}3 years of viable pressurized fluidized-bed combustion (PFBC) service operating life.

  20. Tritium Systems Test Assembly (TSTA) Stabilization

    SciTech Connect (OSTI)

    Tesch, Chuck; Carlson, Richard; Michelotti, Roy; Rogers, Mike; Willms, Scott [Los Alamos National Laboratory (United States)

    2005-07-15T23:59:59.000Z

    The Los Alamos National Laboratory (LANL) Tritium Systems Test Assembly (TSTA) project was begun in 1978 to develop, design, and demonstrate the technology and safe operation of selected tritium processing systems required for a fusion reactor. In 2001, the US Department of Energy (DOE) determined that TSTA's mission was complete and that the facility should be stabilized.At the completion of the stabilization project in 2003, TSTA was categorized as a radiological facility. Before stabilization was complete, the tritium inventory at TSTA was grouped in the following categories: tritium gas mixed with hydrogen isotopes, tritiated water absorbed on molecular sieve, tritium held up as a hydride on various metals, and tritium held up in process components. For each of these, tritium content was characterized, a path for removal was determined, and the proper disposal package was developed. Hydrogen exchange, calorimetry, direct sampling, pressure/composition/temperature, radiological smear surveys, and controlled regeneration were used to determine the tritium inventory for each category of tritium.After removal, the tritium inventory was either (1) sent to other facilities for reuse processing or (2) buried at the LANL radioactive waste disposal site. One complete experimental system was packaged and transferred to another DOE site for future use. Special burial containers were designed and fabricated for the inventory buried at the LANL radioactive waste disposal site. The project was conducted with low tritium emission to the environment and negligible personnel exposure. After the tritium removal was complete, all remaining hardware and piping were opened and vented; the facility emission was below 1 Ci per day.

  1. Stability Properties of Magnetic Tower Jets

    E-Print Network [OSTI]

    Masanori Nakamura; Hui Li; Shengtai Li

    2006-08-31T23:59:59.000Z

    Stability properties of ``magnetic tower'' jets propagating in the gravitationally stratified background have been examined by performing three-dimensional magnetohydrodynamic simulations. The current-carrying, Poynting flux-dominated magnetic tower jet, which possesses a highly wound helical magnetic field, is subject to the current-driven instability (CDI). We find that, under general physical conditions including small perturbations in the initial background profiles, the propagating magnetic tower jets develop the non-axisymmetric, $m=1$ kink mode of the CDI. The kink mode grows on the local Alfv\\'en crossing time scale. In addition, two types of kink modes appear in the system. At the central region where external thermal pressure confinement is strong, only the internal kink mode is excited and will grow. A large distance away from the central region where the external thermal pressure becomes low, the external kink mode is observed. As a result, the exterior of magnetic tower jets will be deformed into a large-scale wiggled structure. We also discuss extensively the different physical processes that contribute to the overall stability properties of the magnetic tower jets. Specifically, when the jet propagates in an initially unperturbed background, we find that they can survive the kink mode beyond the point predicted by the well-known Kruskal-Shafranov (K-S) criterion. The stabilization in this case comes mainly from the dynamical relaxation of magnetic twists during the propagation of magnetic towers; the magnetic pitch is reduced and the corresponding K-S critical wavelength becomes longer as the tower jet proceeds. Furthermore, we show that the pressure-driven and Kelvin-Helmholtz instabilities do not occur in the magnetic tower jets.

  2. assessment ioa assessment: Topics by E-print Network

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

    Websites Summary: technology analysis Noon Lunch 1:15 California off-shore wind technology assessment 1:45 Technical assessmentRESEARCH RESULTS FORUM FOR RENEWABLE ENERGY...

  3. Stability, Higgs Boson Mass and New Physics

    E-Print Network [OSTI]

    Vincenzo Branchina; Emanuele Messina

    2014-05-27T23:59:59.000Z

    When the particle with mass $\\sim 126$ GeV discovered at LHC is identified with the Higgs boson of the Standard Model, intriguing and challenging questions arise. Among them, the issue of the EW vacuum stability. We find that, despite claims to the contrary, the latter strongly depends on new physics interactions. In particular, if $\\tau$ is the lifetime of the EW vacuum, new physics can turn $\\tau$ from $\\tau >> T_U$ to $\\tau << T_U$, where $T_U$ is the age of the Universe.

  4. Stabilizing feedback controls for quantum systems

    E-Print Network [OSTI]

    Mazyar Mirrahimi; Ramon van Handel

    2005-11-10T23:59:59.000Z

    No quantum measurement can give full information on the state of a quantum system; hence any quantum feedback control problem is neccessarily one with partial observations, and can generally be converted into a completely observed control problem for an appropriate quantum filter as in classical stochastic control theory. Here we study the properties of controlled quantum filtering equations as classical stochastic differential equations. We then develop methods, using a combination of geometric control and classical probabilistic techniques, for global feedback stabilization of a class of quantum filters around a particular eigenstate of the measurement operator.

  5. Oxygen stabilized zirconium-vanadium-iron alloy

    DOE Patents [OSTI]

    Mendelsohn, Marshall H. (Woodridge, IL); Gruen, Dieter M. (Downers Grove, IL)

    1982-01-01T23:59:59.000Z

    An oxygen stabilized intermetallic compound having the formula (Zr.sub.1-x Ti.sub.x).sub.2-u (V.sub.1-y Fe.sub.y)O.sub.z where x=0.0 to 0.9, y=0.01 to 0.9, z=0.25 to 0.5 and u=0 to 1. The compound is capable of reversibly sorbing hydrogen at temperatures from -196.degree. C. to 200.degree. C. at pressures down to 10.sup.-6 torr. The compound is suitable for use as a hydrogen getter in low pressure, high temperature applications such as magnetic confinement fusion devices.

  6. 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)

    2014-09-29T23:59:59.000Z

    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.

  7. Supergravity chaotic inflation and moduli stabilization

    SciTech Connect (OSTI)

    Davis, S C [Service de Physique Theorique, Orme des Merisiers, CEA/Saclay, 91191 Gif-sur-Yvette Cedex (France); Postma, M, E-mail: sdavis@lorentz.leidenuniv.nl, E-mail: mpostma@nikhef.nl, E-mail: postma@mail.desy.de [DESY, Notkestrasse 85, 22607 Hamburg (Germany)

    2008-03-15T23:59:59.000Z

    Chaotic inflation predicts a large gravitational wave signal which can be tested by the upcoming Planck satellite. We discuss a supergravity implementation of chaotic inflation in the presence of moduli fields, and find that inflation does not work with a generic Kachru-Kallosh-Linde-Trivedi moduli stabilization potential. A viable model can be constructed with a fine-tuned moduli sector, but only for a very specific choice of Kaehler potential. Our analysis also shows that inflation models satisfying {partial_derivative}{sub i}W{sub inf}=0 for all inflation sector fields {phi}{sub i} can be combined successfully with a fine-tuned moduli sector.

  8. Gauge mediated supersymmetry breaking and moduli stabilization

    SciTech Connect (OSTI)

    Alwis, S. P. de [Physics Department, University of Colorado, Boulder, Colorado 80309 (United States)

    2007-10-15T23:59:59.000Z

    A generic lesson of string theory is that the coupling constants of an effective low energy theory are determined by the vacuum values of a set of fields - the so-called moduli - some of which are stabilized at relatively low masses by nonperturbative effects. We argue that the physics of these moduli cannot be separated from the issues of dynamical and gauge mediated supersymmetry breaking. To illustrate this point we present a modified version of the type IIB Kachru-Kallosh-Linde-Trivedi model where the criteria for gauge mediated supersymmetry breaking may be realized.

  9. Global optimization for the phase stability problem

    SciTech Connect (OSTI)

    Floudas, C.; McDonald, C.

    1994-12-31T23:59:59.000Z

    The Gibbs tangent plane criterion is an important tool in determining the quality of obtained solutions to the phase and chemical equilibrium problem. The ability to determine if a postulated solution is thermodynamically stable is very useful in the search for the equilibrium solution. In this work simpler formulations are presented for the phase stability problem where non-ideal liquid phases are modeled using the NRTL and UNIQUAC models. It is shown how the global minimum of the tangent plane distance function can be obtained. Computational results demonstrate the efficiency of the proposed global optimization algorithms.

  10. Criterion of stability of the superconducting state

    E-Print Network [OSTI]

    Iogann Tolbatov

    2009-10-23T23:59:59.000Z

    In this paper, we propose to draw attention to the stability criterion of the superconductor current state. We use for this purpose the rough systems mathematical apparatus allowing us to relate the desired criterion with the dielectric permittivity of the matter and to identify the type of all possible phonons trajectories in its superconducting state. The state of superconductivity in the matter can be explained only by the phonons behavior peculiarity. And on the basis of the above-mentioned assumption, the corresponding mathematical model is constructed.

  11. Stability of Two-Dimensional Soft Quasicrystals

    E-Print Network [OSTI]

    Kai Jiang; Jiajun Tong; Pingwen Zhang; An-Chang Shi

    2015-05-26T23:59:59.000Z

    The relative stability of two-dimensional soft quasicrystals is examined using a recently developed projection method which provides a unified numerical framework to compute the free energy of periodic crystal and quasicrystals. Accurate free energies of numerous ordered phases, including dodecagonal, decagonal and octagonal quasicrystals, are obtained for a simple model, i.e. the Lifshitz-Petrich free energy functional, of soft quasicrystals with two length-scales. The availability of the free energy allows us to construct phase diagrams of the system, demonstrating that, for the Lifshitz-Petrich model, the dodecagonal and decagonal quasicrystals can become stable phases, whereas the octagonal quasicrystal stays as a metastable phase.

  12. Stabilizing System Pressure | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMayDepartment of EnergySiteCarollm/spotlights-archiveSpringStabilizing

  13. Stability Breakout Session | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretaryVideosSpring O&M Users GroupStability Breakout Session

  14. DOEEA-1203 Environmental Assessment

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

    eve1 m i xed waste low-level waste National Environmental Policy Act o f 1969 performance assessment Resource Conservation and Recovery Act o f 1976 roentgen equi valent man...

  15. Assessing Renewable Energy Options

    Broader source: Energy.gov [DOE]

    Federal agencies should assess renewable energy options for each specific project when integrating renewable energy in new building construction or major renovations. This section covers the preliminary screening, screening, feasibility study, and sizing and designing systems phases.

  16. Literacy Assessment Using

    E-Print Network [OSTI]

    Qian, Ning

    Literacy Assessment Using Mobile Technology Sarah Muffly The Earth Institute and new mobile monitoring technologies. This could be carried out, it makes use of mobile technology to record and disseminate results

  17. Technology Readiness Assessment Guide

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

    2011-09-15T23:59:59.000Z

    The Guide assists individuals and teams involved in conducting Technology Readiness Assessments (TRAs) and developing Technology Maturation Plans (TMPs) for the DOE capital asset projects subject to DOE O 413.3B. Cancels DOE G 413.3-4.

  18. RISK ASSESSMENT CLOUD COMPUTING

    E-Print Network [OSTI]

    Columbia University

    SECURITY RESEARCH PRIVACY RISK ASSESSMENT AMC DATA FISMA CLOUD COMPUTING MOBILE DEVICES OPERATIONS application hosted in the cloud · Alaska DHHS fined $1.7M ­ Portable device stolen from vehicle · Mass Eye

  19. Colorado Statewide Forest Resource Assessment

    E-Print Network [OSTI]

    Colorado Statewide Forest Resource Assessment A Foundation for Strategic Discussion and Private Forestry Redesign Initiative 2 National Guidance for Statewide Forest Resource Assessments 4 The Colorado Statewide Resource Assessment and all appendices are available online on the Colorado State Forest

  20. Assessments | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataEnergyDepartmentWind Siting Articles about WindAssessments Assessments

  1. Initial mechanical stability of cementless highly-porous titanium tibial components

    SciTech Connect (OSTI)

    Stone, Timothy Brandon [Los Alamos National Laboratory; Amer, Luke D [Los Alamos National Laboratory; Warren, Christopher P [Los Alamos National Laboratory; Cornwell, Phillip [Los Alamos National Laboratory; Meneghini, R Michael [UNIV OF CONNECTICUT HEALTH CENTER

    2008-01-01T23:59:59.000Z

    Cementless fixation in total knee replacement has seen limited use since reports of early failure surfaced in the late 80s and early 90s. However the emergence of improved biomaterials, particularly porous titanium and tantalum, has led to a renewed interest in developing a cementless tibial component to enhance long-term survivorship of the implants. Cement is commonly employed to minimize micromotion in new implants but represents a weak interface between the implant and bone. The elimination of cement and application of these new biomaterials, which theoretically provide improved stability and ultimate osseointegration, would likely result in greater knee replacement success. Additionally, the removal of cement from the procedure would help minimize surgical durations and get rid of the time needed for curing, thereby the chance of infection. The purpose of this biomechanical study was twofold. The first goal was to assess whether vibration analysis techniques can be used to evaluate and characterize initial mechanical stability of cementless implants more accurately than the traditional method of micromotion determination, which employs linear variable differential transducers (LVDTs). Second, an evaluative study was performed to determine the comparative mechanical stability of five designs of cementless tibial components under mechanical loading designed to simulate in vivo forces. The test groups will include a cemented Triathlon Keeled baseplate control group, three different 2-peg cementless baseplates with smooth, mid, and high roughnesses and a 4-peg cement/ess baseplate with mid-roughness.

  2. Stability and Turbulence in the Atmospheric Boundary Layer: A Comparison of Remote Sensing and Tower Observations

    SciTech Connect (OSTI)

    Friedrich, K.; Lundquist, J. K.; Aitken, M.; Kalina, E. A.; Marshall, R. F.

    2012-01-01T23:59:59.000Z

    When monitoring winds and atmospheric stability for wind energy applications, remote sensing instruments present some advantages to in-situ instrumentation such as larger vertical extent, in some cases easy installation and maintenance, measurements of vertical humidity profiles throughout the boundary layer, and no restrictions on prevailing wind directions. In this study, we compare remote sensing devices, Windcube lidar and microwave radiometer, to meteorological in-situ tower measurements to demonstrate the accuracy of these measurements and to assess the utility of the remote sensing instruments in overcoming tower limitations. We compare temperature and wind observations, as well as calculations of Brunt-Vaisala frequency and Richardson numbers for the instrument deployment period in May-June 2011 at the U.S. Department of Energy National Renewable Energy Laboratory's National Wind Technology Center near Boulder, Colorado. The study reveals that a lidar and radiometer measure wind and temperature with the same accuracy as tower instruments, while also providing advantages for monitoring stability and turbulence. We demonstrate that the atmospheric stability is determined more accurately when the liquid-water mixing ratio derived from the vertical humidity profile is considered under moist-adiabatic conditions.

  3. Sandia Energy - Security Risk Assessment

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

    Security Risk Assessment Home Climate & Earth Systems WaterEnergy Nexus Water Monitoring & Treatment Technology Security Risk Assessment Security Risk Assessmentcwdd2015-05-04T21:...

  4. Validation of a STATCOM Transient Stability Model through Small-Disturbance Stability Studies

    E-Print Network [OSTI]

    Cańizares, Claudio A.

    . INTRODUCTION Power system operators are constantly striving to keep power networks secure by guaranteeing models. For instance, the TS models proposed for a series of Flexible AC Transmission Systems (FACTS used in small-disturbance stability studies of large, interconnected power grids as well as microgrids

  5. ITER MHD stability analysis. Final report

    SciTech Connect (OSTI)

    Turnbull, A.D.

    1996-05-01T23:59:59.000Z

    This report summarizes the final results and conclusions from work done for ITER under the DOE Task 18 (Raytheon Task ITER-GA 4002E). The work was performed in collaboration with D. Pearlstein and R. Bulmer of the Lawrence Livermore National Laboratory (LLNL), in close conjunction with D. Boucher of the ITER Joint Central Team (JCT). The work was partly done at General Atomics in San Diego and partly at LLNL. Approximately eight hours per week were spent from August 1994 through June 1995, with a no-cost extension through December 1995. The report covers work on the ideal MHD stability analysis for the ITER TAC scenarios and DIII-D ITER Demonstration Discharges, code modifications performed in order to efficiently and accurately complete the stability calculations, and additional collaborative efforts involving code benchmarking and dissemination of the DIII-D ITER Demonstration Discharge data. The work spawned several presentations and reports, including significant contributions to published IAEA Proceedings, and these are also summarized. 8 refs., 9 figs.

  6. Stabilization/solidification of TSCA incinerator ash

    SciTech Connect (OSTI)

    Spence, R.D.; Trotter, D.R.; Francis, C.L.; Morgan, I.L.

    1994-06-01T23:59:59.000Z

    Stabilization/solidification is a well-known waste treatment technique that utilizes different additives and processes. The Phoenix Ash Technology of the Technical Innovation Development Engineering Company is such a technique that uses Cass C fly ash and mechanical pressure to make brick waste forms out of solid wastes, such as the bottom ash from the Toxic Substances Control Act incinerator at the Oak Ridge K-25 Site. One advantage of this technique is that no volume increase over the bulk volume of the bottom ash occurs. This technique should have the same high pH stabilization for Resource Conservation and Recovery Act metals as similar techniques. Also, consolidation of the bottom ash minimizes the potential problems of material dispersion and container corrosion. The bottom ash was spiked with {sup 99}{Tc} to test the effectiveness of the bricks as a physical barrier. The {sup 99}{Tc} leachability index measured for these bricks was 6.8, typical for the pertechnetate anion in cementitious waste forms, indicating that these bricks have accessible porosity as high as that of other cementitious waste forms, despite the mechanical compression, higher waste form density, and water resistant polymer coating.

  7. National Geothermal Resource Assessment and Classification |...

    Office of Environmental Management (EM)

    Resource Assessment and Classification National Geothermal Resource Assessment and Classification National Geothermal Resource Assessment and Classification presentation at the...

  8. DRAFT Fifteenmile Subbasin Assessment 3. Fifteenmile Subbasin Assessment

    E-Print Network [OSTI]

    DRAFT Fifteenmile Subbasin Assessment 3. Fifteenmile Subbasin Assessment DRAFT May 25 2004 Compiled. Fifteenmile Subbasin Assessment 1 Assessment Overview 1 3.1. Subbasin Overview 2 3.1.1. General Description 2.4. Limiting Environmental Factors and Populations of Aquatic Species 39 3.4.1. Winter Steelhead in Fifteenmile

  9. Litt om evolusjonr spillteori. 1. ESS: Evolusjonrt Stabile Strategier

    E-Print Network [OSTI]

    Løw, Erik

    Litt om evolusjonær spillteori. 1. ESS: Evolusjonært Stabile Strategier I klassisk spillteori har konstant i tid. Spørsm°alet er om man kan si noe om denne (stabile) strategifordelingen. 1.1. ESS. La være av befolk- ningen. Vi sier at p er en Evolusjonært Stabil Strategi (ESS) hvis p ikke kan bli invadert

  10. Evaluation of the performance of polypropylene fibers on soil stabilization

    E-Print Network [OSTI]

    Sangineni, Srinivas Meherji

    1992-01-01T23:59:59.000Z

    , Chattanooga, TN 37416. Its product name is "Fibergrids". These are one inch long 1000 denier fibers having a specific gravity of 0. 91. Sand (SM) was stabilized with type I portland cement and clay (CL) was stabilized with lime. Moisture-Density tests... of soil aggregates, especially when small contents of chemical stabilizer (portland cement or lime) was added and the stress-strain curves for these composites have increased post cracking ductility which is an important property where there is impact...

  11. Stability of stainless-steel nanoparticle and water mixtures

    E-Print Network [OSTI]

    Song, You Young; Bhadeshia, H. K. D. H.; Suh, Dong-Woo

    2014-11-28T23:59:59.000Z

    of such mixtures, especially for heavy metallic particles. For 0.017 wt% stainless steel-distilled water nanoparticle-fluid, the thermal conductivity increases by 8.3 % at the optimal stability condition of pH 11. Keywords: Stainless steel, Nanofluid, Stability... of larger particle density related to metallic particles, metallic nanoparticle-fluids have been studied much less than oxides or nanotube dispersions. An important characteristic of a nanoparticle-fluid mixture or nanofluid is its stability with respect...

  12. PH/sub 3/ treatment for polymer stabilization

    DOE Patents [OSTI]

    Not Available

    1982-07-20T23:59:59.000Z

    Polymers are stabilized against oxidative degradation by treatment with phosphine gas. The treatment can be used in situ on polymeric components already in use.

  13. additive waste stabilization: Topics by E-print Network

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

    mean of random variables which are naturally defined on the Clifford group. Graeme Smith; Debbie Leung 2006-12-15 408 Geometry of Weak Stability Boundaries Nonlinear Sciences...

  14. activity state stability: Topics by E-print Network

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

    screened for compounds containing the pharmacophore. Forty-seven compounds resulted from Marshall, Garland R. 5 Stability and Activation Gaps of Parafermionic Hall States in the...

  15. Optimization Online - A stabilized model and an efficient solution ...

    E-Print Network [OSTI]

    Vincent Guigues

    2011-02-24T23:59:59.000Z

    Feb 24, 2011 ... A stabilized model and an efficient solution method for the yearly optimal power management. Vincent Guigues(vguigues ***at*** puc-rio.br).

  16. Elliptically Bent X-ray Mirrors with Active Temperature Stabilization

    E-Print Network [OSTI]

    Yuan, Sheng

    2010-01-01T23:59:59.000Z

    stabilization based on a Peltier element attached directlyof the mirror with a Peltier element attached directly tostabilization based on a Peltier element have shown a

  17. attentional stability neural: Topics by E-print Network

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

    the Stability Region of a Neural Network with a General Distribution of Delays R Campbell, Sue Ann 38 A neural oscillator model of binaural auditory selective attention...

  18. Optimization Online - On the Dynamic Stability of Electricity Markets

    E-Print Network [OSTI]

    Victor M. Zavala

    2011-01-31T23:59:59.000Z

    Jan 31, 2011 ... On the Dynamic Stability of Electricity Markets. Victor M. Zavala (vzavala ***at*** mcs.anl.gov) Mihai Anitescu (anitescu ***at*** mcs.anl.gov).

  19. Nonrelativistic hydrogen type stability problems on nonparabolic 3-manifolds

    E-Print Network [OSTI]

    Batu Güneysu

    2012-03-19T23:59:59.000Z

    We extend classical Euclidean stability theorems corresponding to the nonrelativistic Hamiltonians of ions with one electron to the setting of non parabolic Riemannian 3-manifolds.

  20. Stabilizing coal-water mixtures with Portland cement

    DOE Patents [OSTI]

    Steinberg, M.; Krishna, C.R.

    1984-10-17T23:59:59.000Z

    Coal-water mixes stabilized by the addition of Portland cement which may additionally contain retarding carbohydrates, or borax are described. 1 tab.

  1. apolipoprotein stabilized nanodisk: Topics by E-print Network

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

    stability wrt measurement error) Then can achieve GAS Assume: s.t. 12; Liberzon, Daniel 49 A Novel Function of Apolipoprotein E: Upregulation of ATP-Binding Cassette...

  2. A STABILIZED MODEL AND AN EFFICIENT SOLUTION METHOD ...

    E-Print Network [OSTI]

    2011-01-28T23:59:59.000Z

    We propose a stabilized model for the electricity generation management problem ... electricity consumption, the availability rates of the thermal plants and the ...

  3. Stability estimates for the hyperbolic Dirichlet to Neumann map in ...

    E-Print Network [OSTI]

    In this paper we consider the question of stability, that is, whether if two Dirichlet to .... associated to two metrics are the same to conclude that the harmonic ...

  4. Stabilized Lithium Metal Powder, Enabling Material and Revolutionary...

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

    Peer Evaluation es011yakovleva2011p.pdf More Documents & Publications Stabilized Lithium Metal Powder, Enabling Material and Revolutionary Technology for High Energy Li-ion...

  5. Elucidating the Higher Stability of Vanadium (V) Cations in Mixed...

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

    Elucidating the Higher Stability of Vanadium (V) Cations in Mixed Acid Based Redox Flow Battery Electrolytes. Abstract: The Vanadium (V) cation structures in mixed acid based...

  6. Advanced Oxidation & Stabilization of PAN-Based Carbon Precursor...

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

    More Documents & Publications Advanced Oxidation & Stabilization of PAN-Based Carbon Precursor Fibers Vehicle Technologies Office Merit Review 2014: Advanced Oxidation &...

  7. Quality, Stability, Performance, and Emission Impacts of Biodiesel...

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

    Quality, Stability, Performance, and Emission Impacts of Biodiesel Blends Bob McCormick (PI) with Colleen Alexander, Teresa Alleman, Robb Barnitt, Wendy Clark, John Ireland, Keith...

  8. area uranium stabilization: Topics by E-print Network

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

    gyroscope which meets the stringent stability requirements for high accuracy Hart, Gus 26 Depleted Uranium Technical Brief Environmental Sciences and Ecology Websites Summary: and...

  9. Nevada 2012: Budget Stability and Hope for Improvement

    E-Print Network [OSTI]

    Morin, Robert P.

    2013-01-01T23:59:59.000Z

    Guy (2011) “Ruling Bites Budget Plans,” Reno Gazette-University of Utah. Budget Stability and Hope forBureau (2010) Revenue and Budget. Carson City, Nevada:

  10. Stabilizing coal-water mixtures with portland cement

    DOE Patents [OSTI]

    Steinberg, Meyer (Melville, NY); Krishna, Coimbatore R. (Mount Sinai, NY)

    1986-01-01T23:59:59.000Z

    Coal-water mixes stabilized by the addition of portland cement which may additionally contain retarding carbohydrates, or borax are described.

  11. On the Difficulty of Deciding Asymptotic Stability of Cubic ...

    E-Print Network [OSTI]

    2011-12-04T23:59:59.000Z

    to other families of nonlinear dynamics. The problem of deciding stability of ... Science, Massachusetts Institute of Technology. E-mail: a a a@mit.edu. The origin ...

  12. The robust stabilization problem for discrete-time descriptor systems

    E-Print Network [OSTI]

    Claudiu Dinicu

    2014-09-23T23:59:59.000Z

    Sep 23, 2014 ... Abstract: We investigate the robust stabilization problem for the descriptor discrete-time systems and build an optimal solution in the case when ...

  13. Windows technology assessment

    SciTech Connect (OSTI)

    Baron, J.J.

    1995-10-01T23:59:59.000Z

    This assessment estimates that energy loss through windows is approximately 15 percent of all the energy used for space heating and cooling in residential and commercial buildings in New York State. The rule of thumb for the nation as a whole is about 25 percent. The difference may reflect a traditional assumption of single-pane windows while this assessment analyzed installed window types in the region. Based on the often-quoted assumption, in the United States some 3.5 quadrillion British thermal units (Btu) of primary energy, costing some $20 billion, is annually consumed as a result of energy lost through windows. According to this assessment, in New York State, the energy lost due to heat loss through windows is approximately 80 trillion Btu at an annual cost of approximately $1 billion.

  14. University Assessment Contacts Academic Units

    E-Print Network [OSTI]

    Escher, Christine

    .j.arp@oregonstate.edu 541-737-2331 Notes: Agricultural and Resource Economics Assessment Rep: Email: Phone: Penelope DiebelUniversity Assessment Contacts Academic Units COLLEGE OF AGRICULTURAL SCIENCES Assessment Rep.Capalbo@oregonstate.edu 541-737-5639 Notes: Agricultural Education and Agricultural Sciences Assessment Rep: Email: Phone

  15. High-stability cryogenic scanning tunneling microscope based on a closed-cycle cryostat

    SciTech Connect (OSTI)

    Hackley, Jason D.; Kislitsyn, Dmitry A.; Beaman, Daniel K.; Nazin, George V., E-mail: gnazin@uoregon.edu [Department of Chemistry and Biochemistry, 1253 University of Oregon, Eugene, Oregon 97403 (United States); Ulrich, Stefan [RHK Technology, Inc., 1050 East Maple Road, Troy, Michigan 48083 (United States)

    2014-10-15T23:59:59.000Z

    We report on the design and operation of a cryogenic ultra-high vacuum (UHV) scanning tunneling microscope (STM) coupled to a closed-cycle cryostat (CCC). The STM is thermally linked to the CCC through helium exchange gas confined inside a volume enclosed by highly flexible rubber bellows. The STM is thus mechanically decoupled from the CCC, which results in a significant reduction of the mechanical noise transferred from the CCC to the STM. Noise analysis of the tunneling current shows current fluctuations up to 4% of the total current, which translates into tip-sample distance variations of up to 1.5 picometers. This noise level is sufficiently low for atomic-resolution imaging of a wide variety of surfaces. To demonstrate this, atomic-resolution images of Au(111) and NaCl(100)/Au(111) surfaces, as well as of carbon nanotubes deposited on Au(111), were obtained. Thermal drift analysis showed that under optimized conditions, the lateral stability of the STM scanner can be as low as 0.18 Ĺ/h. Scanning Tunneling Spectroscopy measurements based on the lock-in technique were also carried out, and showed no detectable presence of noise from the closed-cycle cryostat. Using this cooling approach, temperatures as low as 16 K at the STM scanner have been achieved, with the complete cool-down of the system typically taking up to 12 h. These results demonstrate that the constructed CCC-coupled STM is a highly stable instrument capable of highly detailed spectroscopic investigations of materials and surfaces at the atomic scale.

  16. Radion Physics, Stability and Cosmological issues

    SciTech Connect (OSTI)

    Perez-Lorenzana, Abdel [Departamento de Fisica, Centro de Investigacion y de Estudios Avanzados del I.P.N. Apdo. Post. 14-740, 07000, Mexico, D.F. (Mexico); Santos, Eli [Centro de Estudios en Fisica y Matematicas Basicas y Aplicadas, UNACH, 4a Oriente Norte 1428, C.P. 29000 Tuxtla Gutierrez, Chiapas (Mexico); Instituto de Fisica y Matematicas, Universidad Michoacana de San Nicolas de Hidalgo Edificio C-3, Ciudad Universitaria, CP. 58040 Morelia, Michoacan (Mexico)

    2010-07-12T23:59:59.000Z

    Moduli fields are a known ingredient of models that involve extra compact dimensions, as the Kaluza-Klein theories, String theory, and models with compact extra dimensions. They are scalar fields that emerge when the configuration of the compact space is perturbed. The radion is a particular example of this type of fields, which is associated to the variations of the total volume of compact space. Radions usually couple to all other fields, affecting the definition of coupling constants and gravity strength. They also modify gravitational potentials in a way that may be tested in table top experiments. Usually, these fields are run away modes which manifest the difficulties to stabilize the shape of the compact manifold of extra space. This is feature that can be a threat for cosmology on the early Universe. Here we provide a brief discussion of these general aspects of the radion physics.

  17. Stability of a jet in crossflow

    E-Print Network [OSTI]

    Ilak, Miloš; Bagheri, Shervin; Chevalier, Mattias; Henningson, Dan S

    2010-01-01T23:59:59.000Z

    We have produced a fluid dynamics video with data from Direct Numerical Simulation (DNS) of a jet in crossflow at several low values of the velocity inflow ratio R. We show that, as the velocity ratio R increases, the flow evolves from simple periodic vortex shedding (a limit cycle) to more complicated quasi-periodic behavior, before finally exhibiting asymmetric chaotic motion. We also perform a stability analysis just above the first bifurcation, where R is the bifurcation parameter. Using the overlap of the direct and the adjoint eigenmodes, we confirm that the first instability arises in the shear layer downstream of the jet orifice on the boundary of the backflow region just behind the jet.

  18. Mesoscale Quantization and Self-Organized Stability

    E-Print Network [OSTI]

    Randall D. Peters

    2005-06-16T23:59:59.000Z

    In the world of technology, one of the most important forms of friction is that of rolling friction. Yet it is one of the least studied of all the known forms of energy dissipation. In the present experiments we investigate the oscillatory free-decay of a rigid cube, whose side-length is less than the diameter of the rigid cylinder on which it rests. The resulting free-decay is one of harmonic motion with damping. The non-dissipative character of the oscillation yields to a linear differential equation; however, the damping is found to involve more than a deterministic nonlinearity. Dominated by rolling friction, the damping is sensitive to the material properties of the contact surfaces. For `clean' surfaces of glass on glass, the decay shows features of mesoscale quantization and self-organized stability.

  19. Process converts incineration slag into stabilized residue

    SciTech Connect (OSTI)

    Thauront, J.; Deneux-Mustin, S. (EMC-Services, Paris (France)); Durecu, S. (EMC-Services, Vandoeuvre-Les Nancy (France)); Fraysse, G. (EMC-Services, Saint-Vulbas (France)); Berthelin, J. (Centre de Pedologie Biologique, Vandoeuvre-Les Nancy (France))

    1994-12-01T23:59:59.000Z

    During 1973 and 1974, EMC-Services designed and built a physico-chemical treatment plant in Hombourg, in France's Alsatian region. The plant is still in operation. Since then, EMC-Services has developed substantial experience in environmental projects, becoming one of the top companies internationally with experience and practice in designing, building and operating hazardous waste treatment plants. EMC-Services operates in France in Salaise, Strasbourg, Mitry-Mory, and Saint-Vulbas, where eight incinerators treat solid, liquid, highly halogenated and nonhazardous industrial waste. The incinerators, built or updated by EMC-Services, have a total capacity of about 200,000 tons per year. In the new process, incineration of special industrial wastes produces non-volatilized solid residue or slag, which is sent for disposal, in compliance with regulations, to special disposal plants. Future European regulations will incorporate landfilling criteria requiring such slag to be stabilized.

  20. Industrial Assessment Center

    SciTech Connect (OSTI)

    Dr. Diane Schaub

    2007-03-05T23:59:59.000Z

    Since its inception, the University of Florida Industrial Assessment Center has successfully completed close to 400 energy assessments of small to medium manufacturing facilities in Florida, southern Georgia and southern Alabama. Through these efforts, recommendations were made that would result in savings of about $5 million per year, with an implementation rate of 20-25%. Approximately 80 engineering students have worked for the UF-IAC, at least 10 of whom went on to work in energy related fields after graduation. Additionally, through the popular course in Industrial Energy Management, many students have graduated from the University of Florida with a strong understanding and support of energy conservation methods.

  1. Graduate Assessment Strategies 1. Sample assessment plans are online at http://inside.mines.edu/Assessment-Resources. The

    E-Print Network [OSTI]

    Graduate Assessment Strategies Resources: 1. Sample assessment plans are online at http://inside.mines.edu/Assessment-Resources. The graduate level assessment plans from OSU may be particularly helpful: http://oregonstate.edu/admin/aa/apaa/assessment/graduate-assessment/graduate- assessment-plans 2. A list of best practices is online at http://inside.mines.edu/UserFiles/File/Assessment

  2. Geothermal industry assessment

    SciTech Connect (OSTI)

    Not Available

    1980-07-01T23:59:59.000Z

    An assessment of the geothermal industry is presented, focusing on industry structure, corporate activities and strategies, and detailed analysis of the technological, economic, financial, and institutional issues important to government policy formulation. The study is based principally on confidential interviews with executives of 75 companies active in the field. (MHR)

  3. Watershed Assessment Program Team

    E-Print Network [OSTI]

    ­ Proposal to model urban storm-water control practices · Teach advanced graduate course ­ BASINS and SWAT · Monitoring Activities · Modeling Activities · Remote Sensing / GIS · Sources of Funding · What do We Need · Much more monitoring being done by cities and local governments ­ Source water assessment work done

  4. ESPA Deltas: Assessing Health,

    E-Print Network [OSTI]

    Sóbester, András

    weather events and sea-level rise, coupled with population growth and urbanisation. The Project The ESPAEcosystems Livelihood Services Poverty Community ESPA Deltas: Assessing Health, Livelihoods www.espadeltas.net@EspaDeltas Who are the poor? Who are the key stakeholders and what are their roles

  5. Evaluation of sulfidic mine tailings solidified/stabilized with cement kiln dust and fly ash to control acid mine drainage

    SciTech Connect (OSTI)

    Nehdi, M.; Tariq, A. [University of Western Ontario, London, ON (Canada). Dept. of Civil & Environmental Engineering

    2008-11-15T23:59:59.000Z

    In the present research, industrial byproducts, namely, cement kiln dust (CKD) and Class C fly ash (FAC) have been used as candidate materials along with the partial addition of sulfate-resistant cement (SRC) in the Stabilization/solidification of polymetallic sulfidic mine tailings (MT). The effectiveness of S/S was assessed by comparing laboratory experimental values obtained from unconfined compressive strength, hydraulic conductivity and leaching propensity tests of S/S samples with regulatory standards for safe surface disposal of such wastes. Despite general regulatory compliance of compressive strength and hydraulic conductivity, some solidified/stabilized-cured matrices were found unable to provide the required immobilization of pollutants. Solidified/stabilized and 90-day cured mine tailings specimens made with composite binders containing (10% CKD + 10% FAC), (5% SRC + 15% FAC) and (5% SRC + 5% CKD + 10% FAC) significantly impaired the solubility of all contaminants investigated and proved successful in fixing metals within the matrix, in addition to achieving adequate unconfined compressive strength and hydraulic conductivity values, thus satisfying USEPA regulations. Laboratory investigations revealed that, for polymetallic mining waste, leachate concentrations are the most critical factor in assessing the effectiveness of S/S technology.

  6. The Role of Energy Storage for Mini-Grid Stabilization

    E-Print Network [OSTI]

    Boyer, Edmond

    The Role of Energy Storage for Mini-Grid Stabilization Report IEA-PVPS T11-02:2011 hal-00802927 Program The role of energy storage for mini-grid stabilization IEA PVPS Task 11 Report IEA-PVPS T11 Foreword 5 Executive Summary 7 1 Introduction 10 2 Scope of the study 14 3 The role of energy storage

  7. Fundamental studies of fluid mechanics and stability in porous media

    SciTech Connect (OSTI)

    Homsy, G.M.

    1991-08-01T23:59:59.000Z

    This report summarizes accomplished and proposed work for the fundamental studies of fluid mechanics and stability in porous media. Topics discussed include: viscous fingering in miscible displacements; polymer flow interactions in free shear layers of viscoelastic fluids; effect of nonmonotonic viscosity profiles on the stability of miscible displacements in porous media; and references. (JL)

  8. Stability and Controllability of Planar, Conewise Linear Systems

    E-Print Network [OSTI]

    Broucke, Mireille E.

    Stability and Controllability of Planar, Conewise Linear Systems Ari Arapostathis a,2 and Mireille and controllability of piecewise-linear systems defined on a conic partition of R2. This includes necessary. Key words: switched systems, piecewise linear systems, stability, controllability 1 Introduction

  9. Stability Improvement of Wind Farms using Shunt and Series Compensation

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Stability Improvement of Wind Farms using Shunt and Series Compensation T. F. Orchi, Student Member in stability improvement of wind farms. Static synchronous compensator (STATCOM) and static synchronous series enhance the performance of wind farms, however, they can be selected for a system depending on the system

  10. A New Environmentally Friendly AL/ZR-Based Clay Stabilizer

    E-Print Network [OSTI]

    El-Monier, Ilham Abdallah

    2013-01-18T23:59:59.000Z

    Clay stabilizers are means to prevent fines migration and clay swelling, which are caused by the contact of formation with low salinity or high pH brines at high temperature. Previous clay stabilizers including: Al and Zr compounds and cationic...

  11. Stability of K-Means Clustering Alexander Rakhlin

    E-Print Network [OSTI]

    Rakhlin, Alexander "Sasha"

    Stability of K-Means Clustering Alexander Rakhlin Department of Computer Science UC Berkeley phrase K-means clustering as an empirical risk minimization procedure over a class HK and explicitly calculate the covering number for this class. Next, we show that stability of K-means clustering

  12. On the Simultaneous Stabilization of Three or More Plants

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    On the Simultaneous Stabilization of Three or More Plants Christophe Fonte, Michel Zasadzinski stabilization of three multivariable plants is addressed. We consider the general case where the existence controller for three multivariable plants. The sufficient conditions given in this paper lead

  13. STABILIZING LINEAR MPC WITH EFFICIENT PRIORITIZED INFEASIBILITY HANDLING

    E-Print Network [OSTI]

    Foss, Bjarne A.

    is illustrated on a simulated distillation column, and we present a novel stability result for this infeasibilitySTABILIZING LINEAR MPC WITH EFFICIENT PRIORITIZED INFEASIBILITY HANDLING Jostein Vada Olav predictive controller fails to compute a control input, all practical MPC implementations should havea means

  14. HTS Conductor Design Issues Including Quench and Stability,

    E-Print Network [OSTI]

    HTS Conductor Design Issues Including Quench and Stability, AC Losses, and Fault Currents M. J objective and technical approach · The purpose of this collaborative R&D project is an investigation of HTS conductor design optimization with emphasis on stability and protection issues for YBCO wires and coils

  15. Borehole stability analysis at the Coporo-1 well, Colombia

    E-Print Network [OSTI]

    Arias, Henry

    2000-01-01T23:59:59.000Z

    Coporo-1 is an 18,000-ft dry hole located in the tectonically active foothills of the Eastern Cordillera of Colombia. A mechanical stability analysis allowed explaining most of the drilling stability-related problems and elaborating an optimal mud...

  16. Stabilization of tokamak plasma by lithium streams L. E. Zakharov,

    E-Print Network [OSTI]

    a stabilization mechanism independent of the plasma properties. 2. Interaction of lithium streams with externalStabilization of tokamak plasma by lithium streams L. E. Zakharov, Princeton Plasma Physics-boundary magnetohydrodynamic instabilities in tokamaks by liquid lithium streams driven by magnetic propulsion is formulated

  17. Stabilization of tokamak plasma by lithium streams L. E. Zakharov,

    E-Print Network [OSTI]

    Zakharov, Leonid E.

    a stabilization mechanism independent of the plasma properties. 2 Interaction of lithium streams with externalStabilization of tokamak plasma by lithium streams L. E. Zakharov, Princeton Plasma Physics-boundary magnetohydrodynamic instabilities in tokamaks by liquid lithium streams driven by magnetic propulsion is formulated

  18. ON THE ACOUSTIC SINGLE LAYER POTENTIAL: STABILIZATION AND FOURIER ANALYSIS

    E-Print Network [OSTI]

    Buffa, Annalisa

    ON THE ACOUSTIC SINGLE LAYER POTENTIAL: STABILIZATION AND FOURIER ANALYSIS A. BUFFA AND S. SAUTER in the stability and convergence estimates attains its minumum. Key words. Acoustic scattering, Galerkin boundary discretizations for the Helmholtz problem suffer from the pollution effect, i.e., the constants in the Galerkin

  19. Remote Stabilization via Communication Networks with a Distributed Control Law

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Remote Stabilization via Communication Networks with a Distributed Control Law Emmanuel Witrant the problem of remote stabilization via communication networks involving some time- varying delays of known average dynamics. This problem arises when the control law is remotely implemented and leads

  20. Contribution Allocation for Voltage Stability In Deregulated Power Systems

    E-Print Network [OSTI]

    Contribution Allocation for Voltage Stability In Deregulated Power Systems Garng M. Huang, Senior, stability margin I. INTRODUCTION The deregulated power system is based on transactions; each part Member, IEEE, Kun Men Abstract: With deregulation of power systems, it is of great importance to know who

  1. Generalized Lyapunov Function for Stability Analysis of Interconnected Power Systems

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Generalized Lyapunov Function for Stability Analysis of Interconnected Power Systems M. A. Mahmud for formulating generalized Lyapunov function for the stability analysis of interconnected power systems. Lyapunov function is formulated based on the total energy of power system where the system is considered as a single

  2. biocompatibility, stability, , p-p multi-drug

    E-Print Network [OSTI]

    Hong, Deog Ki

    , biocompatibility, stability, , p-p .2 Ř multi-drug resistance gene co- delivered photothermal , , . Ř , biocompatibility, stability, , p-p .2 Ř multi-drug resistance gene co graphene oxide-para amino benzoic acid nanosheet as effective drug delivery system to treat drug resistant

  3. Enhancing the stability of kinesin motors for microscale transport applications{

    E-Print Network [OSTI]

    Hancock, William O.

    Enhancing the stability of kinesin motors for microscale transport applications{ Maruti Uppalapati- or nanoscale active transport when integrated into microscale devices. However, the stability and limited shelf to their implementation. Here we demonstrate that freeze-drying or critical point-drying kinesins adsorbed to glass

  4. Report on the use of stability parameters and mesoscale

    E-Print Network [OSTI]

    Report on the use of stability parameters and mesoscale modelling in short-term prediction Jake Nielsen, Henrik Madsen, John Třfting Title: Report on the use of stability parameters and mesoscale. Mesoscale modelling has been carried out using KAMM at this location. The characteristics of the measured

  5. Characterization and stabilization of arsenic in water treatment residuals

    E-Print Network [OSTI]

    Wee, Hun Young

    2004-11-15T23:59:59.000Z

    -arsenic compounds. However, it is suggested that the ordinary Portland cement (OPC) should be added with the lime for the long term stabilization because lime can be slowly consumed when directly exposed to atmospheric CO2. The solidification and stabilization (S...

  6. Stabilization of a purely dipolar quantum gas against collapse

    E-Print Network [OSTI]

    Loss, Daniel

    statistical effect that also appears in an ideal gas, the physics of Bose­Einstein condensates (BECs, stabilizing a purely dipolar quantum gas. In the case of a homogeneous Bose­Einstein condensate (BECLETTERS Stabilization of a purely dipolar quantum gas against collapse T. KOCH, T. LAHAYE, J. METZ

  7. Stability radius of an optimal schedule: a survey and recent

    E-Print Network [OSTI]

    Magdeburg, Universität

    Stability radius of an optimal schedule: a survey and recent developments Sotskov / Tanaev / Werner Abstract The usual assumption that the processing times of the operations are known in advance on the problem data. We survey some recent results in the calculation of the stability radius of an optimal

  8. Challenges for Large-Field Inflation and Moduli Stabilization

    E-Print Network [OSTI]

    Wilfried Buchmuller; Emilian Dudas; Lucien Heurtier; Alexander Westphal; Clemens Wieck; Martin Wolfgang Winkler

    2015-02-06T23:59:59.000Z

    We analyze the interplay between K\\"ahler moduli stabilization and chaotic inflation in supergravity. While heavy moduli decouple from inflation in the supersymmetric limit, supersymmetry breaking generically introduces non-decoupling effects. These lead to inflation driven by a soft mass term, $m_\\varphi^2 \\sim m m_{3/2}$, where $m$ is a supersymmetric mass parameter. This scenario needs no stabilizer field, but the stability of moduli during inflation imposes a large supersymmetry breaking scale, $m_{3/2} \\gg H$, and a careful choice of initial conditions. This is illustrated in three prominent examples of moduli stabilization: KKLT stabilization, K\\"ahler Uplifting, and the Large Volume Scenario. Remarkably, all models have a universal effective inflaton potential which is flattened compared to quadratic inflation. Hence, they share universal predictions for the CMB observables, in particular a lower bound on the tensor-to-scalar ratio, $r \\gtrsim 0.05$.

  9. Functional Area Assessments Project Charter Workstream Name Functional Area Assessments

    E-Print Network [OSTI]

    Sheridan, Jennifer

    with Huron on detailed project plan. Subject Experts Subject Expert Role Functional leadership Administrative1 of 2 Functional Area Assessments ­ Project Charter Workstream Name Functional Area Assessments - Internal Budgeting - Human Resources These diagnostics will be performed using interviews, surveys, data

  10. Composite heat damage assessment

    SciTech Connect (OSTI)

    Janke, C.J.; Wachter, E.A. [Oak Ridge National Lab., TN (United States); Philpot, H.E. [Oak Ridge K-25 Site, TN (United States); Powell, G.L. [Oak Ridge Y-12 Plant, TN (United States)

    1993-12-31T23:59:59.000Z

    The effects of heat damage were determined on the residual mechanical, physical, and chemical properties of IM6/3501-6 laminates, and potential nondestructive techniques to detect and assess material heat damage were evaluated. About one thousand preconditioned specimens were exposed to elevated temperatures, then cooled to room temperature and tested in compression, flexure, interlaminar shear, shore-D hardness, weight loss, and change in thickness. Specimens experienced significant and irreversible reduction in their residual properties when exposed to temperatures exceeding the material upper service temperature of this material (350{degrees}F). The Diffuse Reflectance Infrared Fourier Transform and Laser-Pumped Fluorescence techniques were found to be capable of rapid, in-service, nondestructive detection and quantitation of heat damage in IM6/3501- 6. These techniques also have the potential applicability to detect and assess heat damage effects in other polymer matrix composites.

  11. Entropic Stabilization of Proteins by TMAO

    E-Print Network [OSTI]

    Cho, Samuel S; Straub, John E; Thirumalai, D

    2011-01-01T23:59:59.000Z

    To understand the mechanism of trimethylamine N-oxide (TMAO) induced stabilization of folded protein states, we systematically investigated the action of TMAO on several model dipeptides (Leucine, L2, Serine, S2, Glutamine, Q2, Lysine, K2, and Glycine, G2) in order to elucidate the effect of residue-specific TMAO interactions on small fragments of solvent-exposed conformations of the denatured states of proteins. We find that TMAO preferentially hydrogen bonds with the exposed dipeptide backbone, but generally not with nonpolar or polar side chains. However, interactions with the positively charged Lys are substantially greater than with the backbone. The dipeptide G2, is a useful model of pure amide backbone, interacts with TMAO by forming a hydrogen bond between the amide nitrogen and the oxygen in TMAO. In contrast, TMAO is depleted from the protein backbone in the hexapeptide G6, which shows that the length of the polypeptide chain is relevant in aqueous TMAO solutions. These simulations lead to the hypot...

  12. Chemical Stabilization of Hanford Tank Residual Waste

    SciTech Connect (OSTI)

    Cantrell, Kirk J.; Um, Wooyong; Williams, Benjamin D.; Bowden, Mark E.; Gartman, Brandy N.; Lukens, Wayne W.; Buck, Edgar C.; Mausolf, Edward J.

    2014-03-01T23:59:59.000Z

    Three different chemical treatment methods were tested for their ability to stabilize residual waste from Hanford tank C-202 for reducing contaminant release (Tc, Cr, and U in particular). The three treatment methods tested were lime addition [Ca(OH)2], an in-situ Ceramicrete waste form based on chemically bonded phosphate ceramics, and a ferrous iron/goethite treatment. These approaches rely on formation of insoluble forms of the contaminants of concern (lime addition and ceramicrete) and chemical reduction followed by co-precipitation (ferrous iron/goethite incorporation treatment). The results have demonstrated that release of the three most significant mobile contaminants of concern from tank residual wastes can be dramatically reduced after treatment compared to contact with simulated grout porewater without treatment. For uranium, all three treatments methods reduced the leachable uranium concentrations by well over three orders of magnitude. In the case of uranium and technetium, released concentrations were well below their respective MCLs for the wastes tested. For tank C-202 residual waste, chromium release concentrations were above the MCL but were considerably reduced relative to untreated tank waste. This innovative approach has the potential to revolutionize Hanford’s tank retrieval process, by allowing larger volumes of residual waste to be left in tanks while providing an acceptably low level of risk with respect to contaminant release that is protective of the environment and human health. Such an approach could enable DOE to realize significant cost savings through streamlined retrieval and closure operations.

  13. String GUT scenarios with stabilized moduli

    SciTech Connect (OSTI)

    Blumenhagen, Ralph; Moster, Sebastian; Plauschinn, Erik [Max-Planck-Institut fuer Physik, Foehringer Ring 6, 80805 Muenchen (Germany)

    2008-09-15T23:59:59.000Z

    Taking into account the recently proposed poly-instanton corrections to the superpotential and combining the racetrack with a Kachru-Kallosh-Linde-Trivedi, respectively, large volume scenario in an intricate manner, we show that we gain exponential control over the parameters in an effective superpotential. This allows us to dynamically stabilize moduli such that a conventional minimal supersymmetric standard model scenario with the string scale lowered to the grand unified theory scale is realized. Depending on the cycles wrapped by the minimal supersymmetric standard model branes, two different scenarios for the hierarchy of soft masses arise. The first one is a supergravity mediated model with M{sub 3/2}{approx_equal}1 TeV while the second one features mixed anomaly supergravity mediation with M{sub 3/2}{approx_equal}10{sup 10} GeV and split supersymmetry. We also comment on dynamically lowering the scales such that the tree level cosmological constant is of the order {lambda}=(10{sup -3} eV){sup 4}.

  14. Stability measurements of PPL atmospheric pressure arc

    SciTech Connect (OSTI)

    Roquemore, L.; Zweben, S.J. [Princeton Plasma Physics Lab., NJ (United States); Wurden, G.A. [Los Alamos National Lab., NM (United States)

    1997-12-31T23:59:59.000Z

    Experiments on the stability of atmospheric pressure arcs have been started at PPL to understand and improve the performance of arc furnaces used for processing applications in metallurgy and hazardous waste treatment. Previous studies have suggested that the violent instabilities in such arcs may be due to kink modes. A 30 kW, 500 Amp CW DC experimental arc furnace was constructed with a graphite cathode and a molten steel anode. The arc plasma is diagnosed with 4000 frames/sec digital camera, Hall probes, and voltage and current monitors. Under certain conditions, the arc exhibits an intermittent helical instability, with the helix rotating at {approx}600 Hz. The nature of the instability is investigated. A possible instability mechanism is the self-magnetic field of the arc, with saturation occurring due to inhomogeneous heating in a helical arc. The effect of external DC and AC magnetic fields on the instability is investigated. Additionally, arc deflection due to external transverse magnetic field is investigated. The deflection angle is found to be proportional to the applied field, and is in good agreement with a simple model of the {rvec J} x {rvec b} force on the arc jet.

  15. Natural Circulation and Linear Stability Analysis for Liquid-Metal Reactors with the Effect of Fluid Axial Conduction

    SciTech Connect (OSTI)

    Piyush Sabharwall; Qiao Wu; James J. Sienicki

    2012-06-01T23:59:59.000Z

    The effect of fluid axial thermal conduction on one-dimensional liquid metal natural circulation and its linear stability was performed through nondimensional analysis, steady-state assessment, and linear perturbation evaluation. The Nyquist criterion and a root-search method were employed to find the linear stability boundary of both forward and backward circulations. The study provided a relatively complete analysis method for one-dimensional natural circulation problems with the consideration of fluid axial heat conduction. The results suggest that fluid axial heat conduction in a natural circulation loop should be considered only when the modified Peclet number is {approx}1 or less, which is significantly smaller than the practical value of a lead liquid metal-cooled reactor.

  16. Engineering solutions to the long-term stabilization and isolation of uranium mill tailings in the United States

    SciTech Connect (OSTI)

    Sanders, D.R. [Morrison Knudsen Environmental Services, San Francisco, CA (United States). UMTRA Project; Lommler, J.C. [AGRA Earth and Environmental, Inc., Albuquerque, NM (United States). UMTRA Project

    1995-03-01T23:59:59.000Z

    Engineering solutions to the safe and environmentally protective disposal and isolation of uranium mill tailings in the US include many factors. Cover design, materials selection, civil engineering, erosive forces, and cost effectiveness are only a few of those factors described in this paper. The systems approach to the engineering solutions employed in the US is described, with emphasis on the standards prescribed for the Uranium Mill Tailings Remedial Action Project. Stabilization and isolation of the tailings from humans and the environment are the primary goals of the US uranium mill tailings control standards. The performance of cover designs with respect to water infiltration, radon exhalation, geotechnical stability, erosion protection, human and animal intrusion prevention, and longevity are addressed. The need for and frequency of surveillance efforts to ensure continued disposal system performance are also assessed.

  17. Assessment summary, Jan. 2004

    E-Print Network [OSTI]

    Education Provision of a suite of short (1-2 day), industry-focused courses Delivered in Cambridge UK by MIT and CU faculty Premium priced - Ł500-Ł600 per delegate day Targeted at the technology/business interface Heavy upfront investment in development... , Collins) KE Practices Decide on model contract notion (w/Aldridge) Decide/commission performer on univ-industry best practice study Assessment: January 2003 EHGI meeting: Edinburgh*, Strathclyde*, Sheffield*, CU, Lancaster, Durham, Loughborough, MIT...

  18. Environmental epidemiology: risk assessment

    SciTech Connect (OSTI)

    Prentice, R.L.; Whittemore, A.S. (eds.)

    1982-01-01T23:59:59.000Z

    Papers presented at the symposium are in the disciplines of biometry, environmental medicine, epidemiology, mathematics, and statistics. Attention is given to assessing risk due to environmental agents, particularly those known to be carcinogenic; both the complex medical issues involved and the mathematical and statistical methodologies used in analysis are presented. Separate abstracts have been prepared for 15 papers for inclusion in the Energy Data Base. (RJC)

  19. PUREX facility hazards assessment

    SciTech Connect (OSTI)

    Sutton, L.N.

    1994-09-23T23:59:59.000Z

    This report documents the hazards assessment for the Plutonium Uranium Extraction Plant (PUREX) located on the US Department of Energy (DOE) Hanford Site. Operation of PUREX is the responsibility of Westinghouse Hanford Company (WHC). This hazards assessment was conducted to provide the emergency planning technical basis for PUREX. DOE Order 5500.3A requires an emergency planning hazards assessment for each facility that has the potential to reach or exceed the lowest level emergency classification. In October of 1990, WHC was directed to place PUREX in standby. In December of 1992 the DOE Assistant Secretary for Environmental Restoration and Waste Management authorized the termination of PUREX and directed DOE-RL to proceed with shutdown planning and terminal clean out activities. Prior to this action, its mission was to reprocess irradiated fuels for the recovery of uranium and plutonium. The present mission is to establish a passively safe and environmentally secure configuration at the PUREX facility and to preserve that condition for 10 years. The ten year time frame represents the typical duration expended to define, authorize and initiate follow-on decommissioning and decontamination activities.

  20. MELCOR assessment at SNL

    SciTech Connect (OSTI)

    Kmetyk, L. N.

    1992-01-01T23:59:59.000Z

    MELCOR is a fully integrated, engineering-level computer code that models the progression of severe accidents in light water reactor (LWR) nuclear power plants, being developed at Sandia National Laboratories for the US Nuclear Regulatory Commission (USNRC). The entire spectrum of severe accident phenomena, including reactor coolant system and containment thermal/hydraulic response, core heatup, degradation and relocation, and fission product release and transport, is treated in MELCOR in a unified framework for both boiling water reactors (BWRS) and pressurized water reactors (PWRs). The MELCOR computer code has been developed to the point that it is now being successfully applied in severe accident analyses, particularly in probabilistic risk assessment (PRA) studies. MELCOR was the first of the severe accident analysis codes to undergo a formal peer review process. One of the major conclusions of the recent MELCOR Peer Review was the need for a more comprehensive and more systematic program of MELCOR assessment. A systematic program of code assessment provides a number of benefits, including: 1. guidance to the code developers in identification of areas where code improvements are needed (such as coding implementation errors in models, inappropriate or deficient models, missing models, excessive numerical sensitivities), 2. documented evidence to external observers, users, reviewers and project management that the code is modelling required phenomena correctly, and 3. increased general public acceptance that the code adequately treats issues related to public safety concerns.

  1. Life cycle assessment

    SciTech Connect (OSTI)

    Curran, M.A. [Environmental Protection Agency, Cincinnati, OH (United States)

    1994-12-31T23:59:59.000Z

    Life-Cycle Assessment (LCA) is a technical, data-based and holistic approach to define and subsequently reduce the environmental burdens associated with a product, process, or activity by identifying and quantifying energy and material usage and waste discharges, assessing the impact of those wastes on the environment, and evaluating and implementing opportunities to effect environmental improvements. The assessment includes the entire life-cycle of the product, process or activity encompassing extraction and processing of raw materials, manufacturing, transportation and distribution, use/reuse, recycling and final disposal. LCA is a useful tool for evaluating the environmental consequences of a product, process, or activity, however, current applications of LCA have not been performed in consistent or easily understood ways. This inconsistency has caused increased criticism of LCA. The EPA recognized the need to develop an LCA framework which could be used to provide consistent use across the board. Also, additional research is needed to enhance the understanding about the steps in the performance of an LCA and its appropriate usage. This paper will present the research activities of the EPA leading toward the development of an acceptable method for conducting LCA`s. This research has resulted in the development of two guidance manuals. The first manual is intended to be a practical guide to conducting and interpreting the life-cycle inventory. A nine-step approach to performing a comprehensive inventory is presented along with the general issues to be addressed. The second manual addresses life-cycle design.

  2. Roll stabilization for fast monohulls by using passive and active lifting appendages

    E-Print Network [OSTI]

    Ulusoy, Talha

    2004-01-01T23:59:59.000Z

    Roll stabilization for monohulls is an important issue in naval architecture. Several methods including roll stabilization tanks, active control fins, rudder roll stabilization systems, and bilge keels are commonly used ...

  3. ENVIRONMENTAL ASSESSMENT/ REGULATORY IMPACT REVIEW/

    E-Print Network [OSTI]

    ENVIRONMENTAL ASSESSMENT/ REGULATORY IMPACT REVIEW/ FINAL REGULATORY FLEXIBILITY ANALYSIS Area and Regulatory Amendments for Bering Sea Habitat Conservation May 2008 Lead Agency: National Juneau, AK 99802 (907) 586-7228 Abstract: This Environmental Assessment/Regulatory Impact Review

  4. Uncertainties in energy technology assessments

    E-Print Network [OSTI]

    Coate, David

    1980-01-01T23:59:59.000Z

    In order to make important contributions, energy technology assessments must be large, interdisciplinary projects, generally becoming very time consuming and expensive. This small project does not involve a large assessment, ...

  5. Dual Rater Competency Assessment FAQ

    Broader source: Energy.gov [DOE]

    The purpose of the dual rater competency assessment is to provide a clearer picture of the individual’s developmental needs by combining self-assessment and supervisory input. Together, these two...

  6. Sandia Energy - SCADA Vulnerability Assessments

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

    SCADA Vulnerability Assessments Home Stationary Power Safety, Security & Resilience of Energy Infrastructure Grid Modernization Cyber Security for Electric Infrastructure National...

  7. ORISE: Radiological program assessment services

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

    Environmental monitoring programs Operational environments Decontamination and decommissioning projects Compliance assessments Radiological release programs ORISE is actively...

  8. DOE limited standard: Operations assessments

    SciTech Connect (OSTI)

    NONE

    1996-05-01T23:59:59.000Z

    Purpose of this standard is to provide DOE Field Element assessors with a guide for conducting operations assessments, and provide DOE Field Element managers with the criteria of the EM Operations Assessment Program. Sections 6.1 to 6.21 provide examples of how to assess specific areas; the general techniques of operations assessments (Section 5) may be applied to other areas of health and safety (e.g. fire protection, criticality safety, quality assurance, occupational safety, etc.).

  9. Non-binary Entanglement-assisted Stabilizer Quantum Codes

    E-Print Network [OSTI]

    Leng Riguang; Ma Zhi

    2011-05-30T23:59:59.000Z

    In this paper, we show how to construct non-binary entanglement-assisted stabilizer quantum codes by using pre-shared entanglement between the sender and receiver. We also give an algorithm to determine the circuit for non-binary entanglement-assisted stabilizer quantum codes and some illustrated examples. The codes we constructed do not require the dual-containing constraint, and many non-binary classical codes, like non-binary LDPC codes, which do not satisfy the condition, can be used to construct non-binary entanglement-assisted stabilizer quantum codes.

  10. Stability of Einstein Static Universe over Lyra Geometry

    E-Print Network [OSTI]

    F. Darabi; Y. Heydarzade; F. Hajkarim

    2014-06-30T23:59:59.000Z

    The existence and stability conditions of Einstein static universe against homogeneous scalar perturbations in the context of Lyra geometry is investigated. The stability condition is obtained in terms of the constant equation of state parameter $\\omega=p/\\rho$ depending on energy density $\\rho_0$ and scale factor $a_0$ of the initial Einstein static universe. Also, the stability against vector and tensor perturbations is studied. It is shown that a stable Einstein static universe can be found in the context of Lyra geometry against scalar, vector and tensor perturbations for suitable range and values of physical parameters.

  11. Plutonium stabilization and handling quality assurance program plan

    SciTech Connect (OSTI)

    Weiss, E.V.

    1998-04-22T23:59:59.000Z

    This Quality Assurance Program Plan (QAPP) identifies project quality assurance requirements for all contractors involved in the planning and execution of Hanford Site activities for design, procurement, construction, testing and inspection for Project W-460, Plutonium Stabilization and Handling. The project encompasses procurement and installation of a Stabilization and Packaging System (SPS) to oxidize and package for long term storage remaining plutonium-bearing special nuclear materials currently in inventory at the Plutonium Finishing Plant (PFP), and modification of vault equipment to allow storage of resulting packages of stabilized SNM.

  12. Assessor Training NVLAP Assessment Forms

    E-Print Network [OSTI]

    NVLAP Assessor Training NVLAP Assessment Forms #12;Assessor Training 2009: NVLAP Assessment Forms 2 Summary ·Test Method Review Summary ·ProgramSpecific Checklists Examples #12;Assessor Training 2009: NVLAP are completed · Assessor Names, Dates, Lab Code #12;Assessor Training 2009: NVLAP Assessment Forms 4 NIST

  13. Assessment of Demand Response Resource

    E-Print Network [OSTI]

    Assessment of Demand Response Resource Potentials for PGE and Pacific Power Prepared for: Portland January 15, 2004 K:\\Projects\\2003-53 (PGE,PC) Assess Demand Response\\Report\\Revised Report_011504.doc #12;#12;quantec Assessment of Demand Response Resource Potentials for I-1 PGE and Pacific Power I. Introduction

  14. "" EPAT# Risk Assessments Environmental Impact

    E-Print Network [OSTI]

    "" EPAT# Risk Assessments Appendixes Environmental Impact Statement NESHAPS for Radionuclides for Hazardous Air Pollutants Risk Assessments Environmental Impact Statement for NESHAPS Radionuclides VOLUME 2 for Hazardous Air Pollutants EPA 520.1'1.-89-006,-2 Risk Assessments Environmental Impact Statement for NESHAPS

  15. NARSTO OZONE ASSESSMENT EXECUTIVE SUMMARY

    E-Print Network [OSTI]

    vi NARSTO OZONE ASSESSMENT EXECUTIVE SUMMARY Prepared as a NARSTO initiative, this tropospheric O3 in the accompanying Textbox, the NARSTO Ozone Assessment contains two product components. The first of these is a set aspects of tropospheric ozone pollution. The second component, the NARSTO Ozone Assessment Document

  16. A framework for combining social impact assessment and risk assessment

    SciTech Connect (OSTI)

    Mahmoudi, Hossein, E-mail: mahmoudi@uni-hohenheim.de [Department of Social Sciences in Agriculture, University of Hohenheim (Germany) [Department of Social Sciences in Agriculture, University of Hohenheim (Germany); Environmental Sciences Research Institute, Shahid Beheshti University, G.C. (Iran, Islamic Republic of); Renn, Ortwin [Department of Technology and Environmental Sociology (and DIALOGIK), University of Stuttgart (Germany)] [Department of Technology and Environmental Sociology (and DIALOGIK), University of Stuttgart (Germany); Vanclay, Frank [Department of Cultural Geography, Faculty of Spatial Sciences, University of Groningen, Groningen (Netherlands)] [Department of Cultural Geography, Faculty of Spatial Sciences, University of Groningen, Groningen (Netherlands); Hoffmann, Volker [Department of Social Sciences in Agriculture, University of Hohenheim (Germany)] [Department of Social Sciences in Agriculture, University of Hohenheim (Germany); Karami, Ezatollah [College of Agriculture, Shiraz University, Shiraz (Iran, Islamic Republic of)] [College of Agriculture, Shiraz University, Shiraz (Iran, Islamic Republic of)

    2013-11-15T23:59:59.000Z

    An increasing focus on integrative approaches is one of the current trends in impact assessment. There is potential to combine impact assessment with various other forms of assessment, such as risk assessment, to make impact assessment and the management of social risks more effective. We identify the common features of social impact assessment (SIA) and social risk assessment (SRA), and discuss the merits of a combined approach. A hybrid model combining SIA and SRA to form a new approach called, ‘risk and social impact assessment’ (RSIA) is introduced. RSIA expands the capacity of SIA to evaluate and manage the social impacts of risky projects such as nuclear energy as well as natural hazards and disasters such as droughts and floods. We outline the three stages of RSIA, namely: impact identification, impact assessment, and impact management. -- Highlights: • A hybrid model to combine SIA and SRA namely RSIA is proposed. • RSIA can provide the proper mechanism to assess social impacts of natural hazards. • RSIA can play the role of ex-post as well as ex-ante assessment. • For some complicated and sensitive cases like nuclear energy, conducting a RSIA is necessary.

  17. Utility of Social Modeling for Proliferation Assessment - Preliminary Assessment

    SciTech Connect (OSTI)

    Coles, Garill A.; Gastelum, Zoe N.; Brothers, Alan J.; Thompson, Sandra E.

    2009-06-01T23:59:59.000Z

    This Preliminary Assessment draft report will present the results of a literature search and preliminary assessment of the body of research, analysis methods, models and data deemed to be relevant to the Utility of Social Modeling for Proliferation Assessment research. This report will provide: 1) a description of the problem space and the kinds of information pertinent to the problem space, 2) a discussion of key relevant or representative literature, 3) a discussion of models and modeling approaches judged to be potentially useful to the research, and 4) the next steps of this research that will be pursued based on this preliminary assessment. This draft report represents a technical deliverable for the NA-22 Simulations, Algorithms, and Modeling (SAM) program. Specifically this draft report is the Task 1 deliverable for project PL09-UtilSocial-PD06, Utility of Social Modeling for Proliferation Assessment. This project investigates non-traditional use of social and cultural information to improve nuclear proliferation assessment, including nonproliferation assessment, proliferation resistance assessments, safeguards assessments and other related studies. These assessments often use and create technical information about the State’s posture towards proliferation, the vulnerability of a nuclear energy system to an undesired event, and the effectiveness of safeguards. This project will find and fuse social and technical information by explicitly considering the role of cultural, social and behavioral factors relevant to proliferation. The aim of this research is to describe and demonstrate if and how social science modeling has utility in proliferation assessment.

  18. Thermal Stability of Li-Ion Cells

    SciTech Connect (OSTI)

    ROTH,EMANUEL P.

    1999-09-17T23:59:59.000Z

    The thermal stability of Li-ion cells with intercalating carbon anodes and metal oxide cathodes was measured as a function of state of charge and temperature for two advanced cell chemistries. Cells of the 18650 design with Li{sub x}CoO{sub 2} cathodes (commercial SONY cells) and Li{sub x}Ni{sub 0.8}Co{sub 0.2}O{sub 2} cathodes were measured for thermal reactivity in the open circuit cell condition. Accelerating rate calorimetry (ARC) was used to measure cell thermal runaway as a function of state of charge (SOC). Microcalorimetry was used to measure the time dependence of heat generating side reactions also as a function of SOC. Components of cells were measured using differential scanning calorimetry (DSC) to study the thermal reactivity of the individual electrodes to determine the temperature regimes and conditions of the major thermal reactions. Thermal decomposition of the SEI layer at the anodes was identified as the initiating source for thermal runaway. The cells with Li{sub x}CoO{sub 2} cathodes showed greater sensitivity to SOC and higher accelerating heating rates than seen for the cells with Li{sub x}Ni{sub 0.8}Co{sub 0.2}O{sub 2}cathodes. Lower temperature reactions starting as low as 40 C were also observed that were SOC dependent but not accelerating. These reactions were also measured in the microcalorimeter and observed to decay over time with a power-law dependence and are believed to result in irreversible capacity loss in the cells.

  19. Fuel traps: mapping stability via water association.

    SciTech Connect (OSTI)

    Rempe, Susan L.; Clawson, Jacalyn S.; Greathouse, Jeffery A.; Alam, Todd M; Leung, Kevin; Varma, Sameer; Sabo, Dubravko; Martin, Marcus Gary; Cygan, Randall Timothy

    2007-03-01T23:59:59.000Z

    Hydrogen storage is a key enabling technology required for attaining a hydrogen-based economy. Fundamental research can reveal the underlying principles controlling hydrogen uptake and release by storage materials, and also aid in characterizing and designing novel storage materials. New ideas for hydrogen storage materials come from exploiting the properties of hydrophobic hydration, which refers to water s ability to stabilize, by its mode of association, specific structures under specific conditions. Although hydrogen was always considered too small to support the formation of solid clathrate hydrate structures, exciting new experiments show that water traps hydrogen molecules at conditions of low temperatures and moderate pressures. Hydrogen release is accomplished by simple warming. While these experiments lend credibility to the idea that water could form an environmentally attractive alternative storage compound for hydrogen fuel, which would advance our nation s goals of attaining a hydrogen-based economy, much work is yet required to understand and realize the full potential of clathrate hydrates for hydrogen storage. Here we undertake theoretical studies of hydrogen in water to establish a firm foundation for predictive work on clathrate hydrate H{sub 2} storage capabilities. Using molecular simulation and statistical mechanical theories based in part on quantum mechanical descriptions of molecular interactions, we characterize the interactions between hydrogen and liquid water in terms of structural and thermodynamic properties. In the process we validate classical force field models of hydrogen in water and discover new features of hydrophobic hydration that impact problems in both energy technology and biology. Finally, we predict hydrogen occupancy in the small and large cages of hydrogen clathrate hydrates, a property unresolved by previous experimental and theoretical work.

  20. Mechanical stabilization of BSCCO-2223 superconducting tapes

    SciTech Connect (OSTI)

    King, C.G.; Grey, D.A.; Mantone, A. [GE Medical Systems, Florence, SC (United States)] [and others

    1996-12-31T23:59:59.000Z

    A system to provide mechanical stabilization to high temperature BSCCO-2223 superconducting tape by laminating 0.081 mm thick, spring hard, copper foil to both sides with lead-tin eutectic solder has been successfully optimized. This system has been applied as a method to create a strong, windable composite from pure silver BSCCO tapes with a minimum of critical current (I{sub c}) degradation. The {open_quotes}as received{close_quotes} conductor is evaluated for physical consistency of width and thickness over the 3000 meters that were later strengthened, insulated and wound into a demonstration coil. Electrical degradation in the strengthened tape as a result of lamination was found to average 24 percent with a range from 4 to 51 percent. This was less than the degradation that would have occurred in an unstrengthened tape during subsequent insulation and coil winding processes. Additional work was performed to evaluate the mechanical properties of the strengthened tapes. The copper can double the ultimate tensile strength of the pure silver tapes. Additionally, pure silver and dispersion strengthened silver matrix tapes are laminated with 0.025 mm thick copper and 304 stainless steel foil to investigate minimization of the cross sectional area of the strengthening component. The stainless steel can increase the UTS of the pure silver tapes sixfold. Metallography is used to examine the laminate and the conductor. Mechanical properties and critical currents of these tapes are also reported both before and after strengthening. The I{sub c} is also measured as a function of strain on the laminated tapes.

  1. A 3D approach to equilibrium, stability and transport studies in RFX-mod improved regimes

    SciTech Connect (OSTI)

    Terranova, D. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Bonfiglio, D. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Boozer, A. H. [Columbia University; Cooper, W Anthony [CRPP/EPFL, Association Euratom-Suisse, Lausanne, Switzerland; Gobbin, M. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Hirshman, Steven Paul [ORNL; Lorenzini, R. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Marrelli, L. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Martines, E. [RFX, Padova, Italy; Momo, B. [RFX, Padova, Italy; Pomphrey, N. [Princeton Plasma Physics Laboratory (PPPL); Predebon, I. [RFX, Padova, Italy; Sanchez, Raul [ORNL; Spizzo, G. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Agnostini, M. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Alfier, A. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Apolloni, L. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Auriemma, F. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Baruzzo, M. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Bolzonella, T. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Bonomo, F. [Consorzio RFX, Italy; Brombin, M. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Canton, A. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Cappello, S. [Association Euratom ENEA Fusion, Consorzio RFX, Padua; Carraro, L. [Association Euratom ENEA Fusion, Consorzio RFX, Padua

    2010-01-01T23:59:59.000Z

    The full three-dimensional (3D) approach is now becoming an important issue for all magnetic confinement configurations. It is a necessary condition for the stellarator but also the tokamak and the reversed field pinch (RFP) now cannot be completely described in an axisymmetric framework. For the RFP the observation of self-sustained helical configurations with improved plasma performances require a better description in order to assess a new view on this configuration. In this new framework plasma configuration studies for RFX-mod have been considered both with tools developed for the RFP as well as considering codes originally developed for the stellarator and adapted to the RFP. These helical states are reached through a transition to a very low/reversed shear configuration leading to internal electron transport barriers. These states are interrupted by MHD reconnection events and the large T(e) gradients at the barriers indicate that both current and pressure driven modes are to be considered. Furthermore the typically flat T(e) profiles in the helical core have raised the issue of the role of electrostatic and electromagnetic turbulence in these reduced chaos regions, so that a stability analysis in the correct 3D geometry is required to address an optimization of the plasma setup. In this view the VMEC code proved to be an effective way to obtain helical equilibria to be studied in terms of stability and transport with a suite of well tested codes. In this work, the equilibrium reconstruction technique as well as the experimental evidence of 3D effects and their first interpretation in terms of stability and transport are presented using both RFP and stellarator tools.

  2. Integrated Assessment Modeling

    SciTech Connect (OSTI)

    Edmonds, James A.; Calvin, Katherine V.; Clarke, Leon E.; Janetos, Anthony C.; Kim, Son H.; Wise, Marshall A.; McJeon, Haewon C.

    2012-10-31T23:59:59.000Z

    This paper discusses the role of Integrated Assessment models (IAMs) in climate change research. IAMs are an interdisciplinary research platform, which constitutes a consistent scientific framework in which the large-scale interactions between human and natural Earth systems can be examined. In so doing, IAMs provide insights that would otherwise be unavailable from traditional single-discipline research. By providing a broader view of the issue, IAMs constitute an important tool for decision support. IAMs are also a home of human Earth system research and provide natural Earth system scientists information about the nature of human intervention in global biogeophysical and geochemical processes.

  3. Sandia Energy - Assessment Program

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

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

  4. Assessing Pathways in Aruba

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube platform is alwaysISOSource Heat 1PowerofSystems |As Electric2: Assessing

  5. Wind Resource Assessment in Europe Using Emergy

    E-Print Network [OSTI]

    Paudel, Subodh; Santarelli, Massimo; Martin, Viktoria; Lacarriere, Bruno; Le Corre, Olivier

    2014-01-01T23:59:59.000Z

    energy in Vietnam: Resource assessment, development statusWind Resource Assessment in Europe Using Emergy Subodhspeed). Keywords: Wind resource assessment; Emergy Analysis;

  6. Sandia Energy - Risk and Safety Assessment

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

    Risk and Safety Assessment Home Stationary Power Nuclear Fuel Cycle Nuclear Energy Safety Technologies Risk and Safety Assessment Risk and Safety AssessmentTara...

  7. Perceptual quality assessment for compressed video

    E-Print Network [OSTI]

    Yang, Kai-Chieh

    2007-01-01T23:59:59.000Z

    Overview of Video Quality Assessment . . . . . . . . . . . .2.3.1 Subjective Video Quality Assessment . . . . . . . .2.3.2 Objective Video Quality Assessment . . . . . . . . .

  8. Process for preparing a stabilized coal-water slurry

    DOE Patents [OSTI]

    Givens, Edwin N. (Bethlehem, PA); Kang, Doohee (Macungie, PA)

    1987-01-01T23:59:59.000Z

    A process for preparing a stabilized coal particle suspension which includes the steps of providing an aqueous media substantially free of coal oxidizing constituents, reducing, in a nonoxidizing atmosphere, the particle size of the coal to be suspended to a size sufficiently small to permit suspension thereof in the aqueous media and admixing the coal of reduced particle size with the aqueous media to release into the aqueous media coal stabilizing constituents indigenous to and carried by the reduced coal particles in order to form a stabilized coal particle suspension. The coal stabilizing constituents are effective in a nonoxidizing atmosphere to maintain the coal particle suspension at essentially a neutral or alkaline pH. The coal is ground in a nonoxidizing atmosphere such as an inert gaseous atmosphere to reduce the coal to a sufficient particle size and is admixed with an aqueous media that has been purged of oxygen and acid-forming gases.

  9. Process for preparing a stabilized coal-water slurry

    DOE Patents [OSTI]

    Givens, E.N.; Kang, D.

    1987-06-23T23:59:59.000Z

    A process is described for preparing a stabilized coal particle suspension which includes the steps of providing an aqueous media substantially free of coal oxidizing constituents, reducing, in a nonoxidizing atmosphere, the particle size of the coal to be suspended to a size sufficiently small to permit suspension thereof in the aqueous media and admixing the coal of reduced particle size with the aqueous media to release into the aqueous media coal stabilizing constituents indigenous to and carried by the reduced coal particles in order to form a stabilized coal particle suspension. The coal stabilizing constituents are effective in a nonoxidizing atmosphere to maintain the coal particle suspension at essentially a neutral or alkaline pH. The coal is ground in a nonoxidizing atmosphere such as an inert gaseous atmosphere to reduce the coal to a sufficient particle size and is admixed with an aqueous media that has been purged of oxygen and acid-forming gases. 2 figs.

  10. Stabilized Ultrafast Pulse Generation and Optical Frequency Combs Techniques

    E-Print Network [OSTI]

    Van Stryland, Eric

    Stabilized Ultrafast Pulse Generation and Optical Frequency Combs ­ Techniques and Applications Diodes ­ Review Ultrafast Dynamics ­ Breathing Mode (Dispersion Managed Cavity) · High Pulse Energy to Make Short Pulses - Review Ultrafast Dynamics- - Dispersion Managed (Breathing Mode) MLL #12

  11. High capacity stabilized complex hydrides for hydrogen storage

    DOE Patents [OSTI]

    Zidan, Ragaiy; Mohtadi, Rana F; Fewox, Christopher; Sivasubramanian, Premkumar

    2014-11-11T23:59:59.000Z

    Complex hydrides based on Al(BH.sub.4).sub.3 are stabilized by the presence of one or more additional metal elements or organic adducts to provide high capacity hydrogen storage material.

  12. Text-Alternative Version: LED Color Stability Webinar

    Broader source: Energy.gov [DOE]

    Michael Royer: All right, welcome ladies and gentleman. I'm Michael Royer of Pacific Northwest National Laboratory, and I'd like to welcome you to today's webinar on LED Color Stability, Ten...

  13. Selection of variables for stabilizing control using pole Kjetil Havre

    E-Print Network [OSTI]

    Skogestad, Sigurd

    for stabilizing control in order to minimize input usage? 1 #12;E G(s) Eu1 E um Ey1 E yl c yk c'nk'Kjk(s) - uj

  14. Irradiation Stability of Carbon Nanotubes and Related Materials

    E-Print Network [OSTI]

    Aitkaliyeva, Assel 1985-

    2012-09-28T23:59:59.000Z

    Application of carbon nanotubes (CNTs) in various fields demands a thorough investigation of their stability under irradiation. Open structure, ability to reorganize and heal defects, and large surface-to-volume ratio of carbon nanotubes affect...

  15. Hamiltonian Control of Quantum Dynamical Semigroups: Stabilization and Convergence Speed

    E-Print Network [OSTI]

    Cappellaro, Paola

    We consider finite-dimensional Markovian open quantum systems, and characterize the extent to which time-independent Hamiltonian control may allow to stabilize a target quantum state or subspace and optimize the resulting ...

  16. Evaluation of an alternative bituminous material as a soil stabilizer

    E-Print Network [OSTI]

    Kim, Yong-Rak

    1999-01-01T23:59:59.000Z

    . Consequently, development of a new stabilization material, which is environmentally safe and non-flammable, is desired for replacing cutback asphalts. In this study a petroleum-resin-based (PRB) material was tested to investigate its physical and mechanical...

  17. adduct stabilization: Topics by E-print Network

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

    such as 4-hydroxy-2-nonenal (HNE), 4-oxo-2-nonenal (ONE), malondialdehyde (MDA) or acrolein (ACR) is thought (more) Wu, Jianyong 2010-01-01 13 Stability and Feedback...

  18. Operational considerations on the stability of colliding beams

    E-Print Network [OSTI]

    Buffat, X; Pieloni, T

    2014-01-01T23:59:59.000Z

    While well studied in the absence of beam-beam and while colliding head-on, the stability of the LHC beams can be very critical in intermediate steps. During the squeeze, the long-range beam-beam interaction becomes a critical component of the beam's dynamics. Also, while the transverse separation at the interaction points is collapsed, the beam-beam forces change drastically, possibly deteriorating the beam's stability. Finally, during luminosity production, the configuration of the LHC in 2012 included few bunches without head-on collision in any of the interaction points having different stability properties. Stability diagrams are being evaluated numerically in these configurations in an attempt to explain instabilities observed in these phases during the 2012 proton run of the LHC.

  19. STABILITY OF EQUILIBRIA IN ONE DIMENSION FOR DIBLOCK COPOLYMER EQUATION

    E-Print Network [OSTI]

    Sander, Evelyn

    STABILITY OF EQUILIBRIA IN ONE DIMENSION FOR DIBLOCK COPOLYMER EQUATION Olga Stulov Department for numerically. The various sets of the solutions of the linearized model were found by means of software AUTO

  20. Stability issues in IC Low Drop Out voltage regulators

    E-Print Network [OSTI]

    Chava, Krishna Chaitanya

    2002-01-01T23:59:59.000Z

    Performance issues of IC Low Drop Out (LDO) voltage regulators, with specific reference to stability, are discussed in this thesis. Evaluation of existing frequency compensation schemes and their performances across operating loads is presented...

  1. On the predictive capability and stability of rubber material models

    E-Print Network [OSTI]

    Zheng, Haining

    2008-01-01T23:59:59.000Z

    Due to the high non-linearity and incompressibility constraint of rubber materials, the predictive capability and stability of rubber material models require specific attention for practical engineering analysis. In this ...

  2. Nonlinear Stability of Riemann Ellipsoids with Symmetric Configurations

    E-Print Network [OSTI]

    Miguel Rodriguez-Olmos; M. Esmeralda Sousa-Dias

    2007-12-19T23:59:59.000Z

    We apply geometric techniques to obtain the necessary and sufficient conditions on the existence and nonlinear stability of self-gravitating Riemann ellipsoids having at least two equal axes.

  3. Stabilized Lithium Metal Powder, Enabling Material and Revolutionary...

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

    -- Washington D.C. es011yakovleva2010o.pdf More Documents & Publications Stabilized Lithium Metal Powder, Enabling Material and Revolutionary Technology for High Energy Li-ion...

  4. Orbital stability of periodic waves for the nonlinear Schrodinger equation

    E-Print Network [OSTI]

    Gallay, Thierry

    Orbital stability of periodic waves for the nonlinear SchrË?odinger equation Thierry Gallay Institut: Thierry Gallay, Thierry.Gallay@ujf­grenoble.fr Keywords: Nonlinear SchrË?odinger equation, periodic waves

  5. Orbital stability of periodic waves for the nonlinear Schrodinger equation

    E-Print Network [OSTI]

    Orbital stability of periodic waves for the nonlinear Schr¨odinger equation Thierry Gallay Institut: Thierry Gallay, Thierry.Gallay@ujf-grenoble.fr Keywords: Nonlinear Schr¨odinger equation, periodic waves

  6. Stability of Propagating Fronts in Damped Hyperbolic Equations

    E-Print Network [OSTI]

    Stability of Propagating Fronts in Damped Hyperbolic Equations Th. Gallay, G. Raugel Analyse Num'erique et EDP CNRS et Universit'e de Paris­Sud F­91405 Orsay Cedex, France Thierry.Gallay

  7. Orbital stability of periodic waves for the nonlinear Schrodinger equation

    E-Print Network [OSTI]

    Boyer, Edmond

    Orbital stability of periodic waves for the nonlinear Schr¨odinger equation Thierry Gallay Institut: Thierry Gallay, Thierry.Gallay@ujf-grenoble.fr Keywords: Nonlinear Schr¨odinger equation, periodic waves

  8. Energy-Casimir stability of hybrid Vlasov-MHD models

    E-Print Network [OSTI]

    Cesare Tronci; Emanuele Tassi; Philip J. Morrison

    2014-10-07T23:59:59.000Z

    Different variants of hybrid kinetic-fluid models are considered for describing the interaction of a bulk fluid plasma obeying MHD and an energetic component obeying a kinetic theory. Upon using the Vlasov kinetic theory for energetic particles, two planar Vlasov-MHD models are compared in terms of their stability properties. This is made possible by the Hamiltonian structures underlying the considered hybrid systems, whose infinite number of invariants makes the energy-Casimir method effective for determining stability. Equilibrium equations for the models are obtained from a variational principle and in particular a generalized hybrid Grad-Shafranov equation follows for one of the considered models. The stability conditions are then derived and discussed with particular emphasis on kinetic particle effects on classical MHD stability.

  9. Experimental and Computational Studies on Protein Folding, Misfolding and Stability

    E-Print Network [OSTI]

    Wei, Yun

    2010-07-14T23:59:59.000Z

    Proteins need fold to perform their biological function. Thus, understanding how proteins fold could be the key to understanding life. In the first study, the stability and structure of several !-hairpin peptide variants derived from the C...

  10. Uncertainty in Greenhouse Emissions and Costs of Atmospheric Stabilization

    E-Print Network [OSTI]

    Webster, Mort D.

    We explore the uncertainty in projections of emissions, and costs of atmospheric stabilization applying the MIT Emissions Prediction and Policy Analysis model, a computable general equilibrium model of the global economy. ...

  11. Maximum angle of stability of a wet granular pile

    E-Print Network [OSTI]

    Loss, Daniel

    ­7 . The friction-based Mohr­Coulomb model3,8 distinguishes between granular friction and interparticle friction stability of dry particles on the surface of a pile2 is in excellent agreement with experiment. However

  12. Stability and quench protection of high-temperature superconductors

    E-Print Network [OSTI]

    Ang, Ing Chea

    2006-01-01T23:59:59.000Z

    In the design and operation of a superconducting magnet, stability and protection are two key issues that determine the magnet's reliability and safe operation. Although the high-temperature superconductor (HTS) is considered ...

  13. Structures and Stabilities of (MgO)n Nanoclusters. | EMSL

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

    of (MgO)n Nanoclusters. Structures and Stabilities of (MgO)n Nanoclusters. Abstract: Global minima for (MgO)n structures were optimized using a tree growth?hybrid...

  14. Evaluation of an alternative bituminous material as a soil stabilizer 

    E-Print Network [OSTI]

    Kim, Yong-Rak

    1999-01-01T23:59:59.000Z

    characteristics as an alternative bituminous soil stabilizer in terms of replacing the cutback asphalts because the PRB material has been proved an environmentally safe material. Based on various laboratory tests, including an unconfined compressive strength test...

  15. Increasing Stability Reduces Conformational Heterogeneity in a Protein Folding

    E-Print Network [OSTI]

    Increasing Stability Reduces Conformational Heterogeneity in a Protein Folding Intermediate, the results show that protein folding intermediates are ensembles of different structural forms direct experi- mental evidence in support of a basic tenet of energy landscape theory for protein folding

  16. alloys phase stability: Topics by E-print Network

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

    transition i t s e l f is not fully understood for metals, ceramics,glasses -Stability of high temperature f i r e brick. Development of ceramics Morris, Jr., J.W. 2010-01-01 23...

  17. alloy phase stability: Topics by E-print Network

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

    transition i t s e l f is not fully understood for metals, ceramics,glasses -Stability of high temperature f i r e brick. Development of ceramics Morris, Jr., J.W. 2010-01-01 23...

  18. STUDIES ON THE CONFORMATIONAL STABILITY, DYNAMICS AND VISCOSITY OF IMMUNOGLOBULINS

    E-Print Network [OSTI]

    Thakkar, Santoshanand Vijay

    2012-12-31T23:59:59.000Z

    strength and temperature were used to probe the response of proteins, both at low and high concentrations. Different monoclonal antibodies within IgG1 isotype were used to investigate interrelationships between protein dynamics and conformational stability...

  19. Injectivity and stability for a generic class of generalized Radon ...

    E-Print Network [OSTI]

    2014-12-15T23:59:59.000Z

    then show injectivity and stability for an open, dense subset of smooth generalized Radon ..... ei(s??(y,?))s w(y, ?)J(y, ?)f(y) dVol(y) ds. = ?. M1. KRw (s

  20. Quantum Limit on Stability of Clocks in a Gravitational Field

    E-Print Network [OSTI]

    Supurna Sinha; Joseph Samuel

    2014-03-21T23:59:59.000Z

    Good clocks are of importance both to fundamental physics and for applications in astronomy, metrology and global positioning systems. In a recent technological breakthrough, researchers at NIST have been able to achieve a stability of 1 part in $10^{18}$ using an Ytterbium clock. This naturally raises the question of whether there are fundamental limits to the stability of clocks. In this paper we point out that gravity and quantum mechanics set a fundamental limit on the stability of clocks. This limit comes from a combination of the uncertainty relation, the gravitational redshift and the relativistic time dilation effect. For example, a single ion hydrogen maser clock in a terrestrial gravitational field cannot achieve a stability better than one part in $10^{22}$. This observation has implications for laboratory experiments involving both gravity and quantum theory.

  1. Quantifying the cost uncertainty of climate stabilization policies

    E-Print Network [OSTI]

    Franck, Travis Read

    2005-01-01T23:59:59.000Z

    Climate change researchers are often asked to evaluate potential economic effects of climate stabilization policies. Policy costs are particularly important because policymakers use a cost/benefit framework to analyze ...

  2. On the stability of thermonuclear shell sources in stars

    E-Print Network [OSTI]

    S. -C. Yoon; N. Langer; M. van der Sluys

    2004-06-07T23:59:59.000Z

    We present a quantitative criterion for the thermal stability of thermonuclear shell sources. We find the thermal stability of shell sources to depend on exactly three factors: they are more stable when they are geometrically thicker, less degenerate and hotter. This confirms and unifies previously obtained results in terms of the geometry, temperature and density of the shell source, by a simplified but quantitative approach to the physics of shell nuclear burning. We present instability diagrams in the temperature-density plane for hydrogen and helium shell burning, which allow a simple evaluation of the stability conditions of such shell sources in stellar models. The performance of our stability criterion is demonstrated in various numerical models: in a 3 Msun AGB star, in helium accreting CO white dwarfs, in a helium white dwarf which is covered by a thin hydrogen envelope, and in a 1.0 Msun giant.

  3. Solidification/stabilization of simulated uranium and nickel contaminated sludges

    E-Print Network [OSTI]

    Ramabhadran, Sanjay

    1996-01-01T23:59:59.000Z

    in this research which focused on better understanding the Solidification/Stabilization (S/S) chemistry, complex waste-binder interactions, and the suitability and effectiveness of additives in the Portland cement based treatment systems. The treatability...

  4. Stability in the Stefan problem with surface tension (II)

    E-Print Network [OSTI]

    Mahir Hadzic; Yan Guo

    2012-12-12T23:59:59.000Z

    This paper has been withdrawn by the authors due to an error in the proof of Lemma 3.9. The correct proof of global stability is given in arXiv:1101.5177

  5. Stability of the solid electrolyte Li{sub 3}OBr to common battery solvents

    SciTech Connect (OSTI)

    Schroeder, D.J. [Department of Engineering Technology, College of Engineering and Engineering Technology, Northern Illinois University, 301B Still Gym, DeKalb, IL 60115 (United States); Hubaud, A.A. [Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439-4837 (United States); Vaughey, J.T., E-mail: vaughey@anl.gov [Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439-4837 (United States)

    2014-01-01T23:59:59.000Z

    Graphical abstract: The stability of the anti-perovskite phase Li{sub 3}OBr has been assessed in a variety of battery solvents. - Highlights: • Lithium stable solid electrolyte Li{sub 3}OBr unstable to polar organic solvents. • Solvation with no dissolution destroys long-range structure. • Ion exchange with protons observed. - Abstract: Recently a new class of solid lithium ion conductors was reported based on the anti-perovskite structure, notably Li{sub 3}OCl and Li{sub 3}OBr. For many beyond lithium-ion battery uses, the solid electrolyte is envisioned to be in direct contact with liquid electrolytes and lithium metal. In this study we evaluated the stability of the Li{sub 3}OBr phase against common battery solvents electrolytes, including diethylcarbonate (DEC) and dimethylcarbonate (DMC), as well as a LiPF{sub 6} containing commercial electrolyte. In contact with battery-grade organic solvents, Li{sub 3}OBr was typically found to be insoluble but lost its crystallinity and reacted with available protons and in some cases with the solvent. A low temperature heat treatment was able to restore crystallinity of the samples; however evidence of proton ion exchange was conserved.

  6. Single-shell tank interim stabilization project plan

    SciTech Connect (OSTI)

    Ross, W.E.

    1998-03-27T23:59:59.000Z

    Solid and liquid radioactive waste continues to be stored in 149 single-shell tanks at the Hanford Site. To date, 119 tanks have had most of the pumpable liquid removed by interim stabilization. Thirty tanks remain to be stabilized. One of these tanks (C-106) will be stabilized by retrieval of the tank contents. The remaining 29 tanks will be interim stabilized by saltwell pumping. In the summer of 1997, the US Department of Energy (DOE) placed a moratorium on the startup of additional saltwell pumping systems because of funding constraints and proposed modifications to the Hanford Federal Facility Agreement and Consent Order (Tri-Party Agreement) milestones to the Washington State Department of Ecology (Ecology). In a letter dated February 10, 1998, Final Determination Pursuant to Hanford Federal Facility Agreement and Consent Order (Tri-Party Agreement) in the Matter of the Disapproval of the DOE`s Change Control Form M-41-97-01 (Fitzsimmons 1998), Ecology disapproved the DOE Change Control Form M-41-97-01. In response, Fluor Daniel Hanford, Inc. (FDH) directed Lockheed Martin Hanford Corporation (LNMC) to initiate development of a project plan in a letter dated February 25, 1998, Direction for Development of an Aggressive Single-Shell Tank (SST) Interim Stabilization Completion Project Plan in Support of Hanford Federal Facility Agreement and Consent Order (Tri-Party Agreement). In a letter dated March 2, 1998, Request for an Aggressive Single-Shell Tank (SST) Interim Stabilization Completion Project Plan, the DOE reaffirmed the need for an aggressive SST interim stabilization completion project plan to support a finalized Tri-Party Agreement Milestone M-41 recovery plan. This project plan establishes the management framework for conduct of the TWRS Single-Shell Tank Interim Stabilization completion program. Specifically, this plan defines the mission needs and requirements; technical objectives and approach; organizational structure, roles, responsibilities, and interfaces; and operational methods. The plan is based on realistic assumptions and addresses three separate funding scenarios.

  7. Natural gas hydrates - issues for gas production and geomechanical stability

    E-Print Network [OSTI]

    Grover, Tarun

    2008-10-10T23:59:59.000Z

    NATURAL GAS HYDRATES – ISSUES FOR GAS PRODUCTION AND GEOMECHANICAL STABILITY A Dissertation by TARUN GROVER 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 August 2008 Major Subject: Petroleum Engineering NATURAL GAS HYDRATES – ISSUES FOR GAS PRODUCTION AND GEOMECHANICAL STABILITY A Dissertation by TARUN GROVER Submitted to the Office of Graduate...

  8. Clustered Error Correction of Codeword-Stabilized Quantum Codes

    E-Print Network [OSTI]

    Yunfan Li; Ilya Dumer; Leonid P. Pryadko

    2010-03-08T23:59:59.000Z

    Codeword stabilized (CWS) codes are a general class of quantum codes that includes stabilizer codes and many families of non-additive codes with good parameters. For such a non-additive code correcting all t-qubit errors, we propose an algorithm that employs a single measurement to test all errors located on a given set of t qubits. Compared with exhaustive error screening, this reduces the total number of measurements required for error recovery by a factor of about 3^t.

  9. CO2 stabilization, climate change and the terrestrial carbon sink

    E-Print Network [OSTI]

    White, Andrew

    CO2 stabilization, climate change and the terrestrial carbon sink A N D R E W W H I T E , * M E L V, Hybrid v4.1, with a subdaily timestep, was driven by increasing CO2 and transient climate output from scenarios were used: (i) IS92a, giving 790 ppm CO2 by 2100, (ii) CO2 stabilization at 750 ppm by 2225

  10. Fiber optically isolated and remotely stabilized data transmission system

    DOE Patents [OSTI]

    Nelson, M.A.

    1992-11-10T23:59:59.000Z

    A fiber optically isolated and remotely stabilized data transmission systems described wherein optical data may be transmitted over an optical data fiber from a remote source which includes a data transmitter and a power supply at the remote source. The transmitter may be remotely calibrated and stabilized via an optical control fiber, and the power source may be remotely cycled between duty and standby modes via an optical control fiber. 3 figs.

  11. Stability of drift waves with the integral eigenmode equation

    SciTech Connect (OSTI)

    Chen, L.; Ke, F.J.; Xu, M.J.; Tsai, S.T.; Lee, Y.C.; Antonsen, T.M. Jr.

    1981-11-01T23:59:59.000Z

    An analytical theory on the stability properties of drift-wave eigenmodes in a slab plasma with finite magnetic shear is presented. The corresponding eigenmode equation is the integral equation first given by Coppi, Rosenbluth, and Sagdeev (1967) and rederived here, in a relatively simpler fashion, via the gyrokinetic equation. It is then proved that the universal drift-wave eigenmodes remain absolutely stable and finite electron temperature gradients do not alter the stability.

  12. Electrostatic wire for stabilizing a charged particle beam

    DOE Patents [OSTI]

    Prono, Daniel S. (Livermore, CA); Caporaso, George J. (Livermore, CA); Briggs, Richard J. (Livermore, CA)

    1985-01-01T23:59:59.000Z

    In combination with a charged particle beam generator and accelerator, apparatus and method are provided for stabilizing a beam of electrically charged particles. A guiding means, disposed within the particle beam, has an electric charge induced upon it by the charged particle beam. Because the sign of the electric charge on the guiding means and the sign of the particle beam are opposite, the particles are attracted toward and cluster around the guiding means to thereby stabilize the particle beam as it travels.

  13. The effect of neutralization on compressive strength of stabilized phosphogypsum

    E-Print Network [OSTI]

    Yung, Chung Che

    1985-01-01T23:59:59.000Z

    is not homogeneously distributed among the solids in phosphcgypsum, neutralization curves were not reproducible. Moreover, the time required to achieve equilibrium pH depends on the type and amount of neutralizer. For portland cement stabilized phosphogypsum..., it was found that during initial stages of strength development (3 days) in partly and fully neutralized phosphogypsum and with low amounts of stabilizers (3 and 6 percent portland cement) after curing for 7 and 28 days the type of alkali has no significant...

  14. Radionuclide release rates from spent fuel for performance assessment modeling

    SciTech Connect (OSTI)

    Curtis, D.B.

    1994-11-01T23:59:59.000Z

    In a scenario of aqueous transport from a high-level radioactive waste repository, the concentration of radionuclides in water in contact with the waste constitutes the source term for transport models, and as such represents a fundamental component of all performance assessment models. Many laboratory experiments have been done to characterize release rates and understand processes influencing radionuclide release rates from irradiated nuclear fuel. Natural analogues of these waste forms have been studied to obtain information regarding the long-term stability of potential waste forms in complex natural systems. This information from diverse sources must be brought together to develop and defend methods used to define source terms for performance assessment models. In this manuscript examples of measures of radionuclide release rates from spent nuclear fuel or analogues of nuclear fuel are presented. Each example represents a very different approach to obtaining a numerical measure and each has its limitations. There is no way to obtain an unambiguous measure of this or any parameter used in performance assessment codes for evaluating the effects of processes operative over many millennia. The examples are intended to suggest by example that in the absence of the ability to evaluate accuracy and precision, consistency of a broadly based set of data can be used as circumstantial evidence to defend the choice of parameters used in performance assessments.

  15. REVIEWING PERFORMANCE ASSESSMENTS SUPPORTING

    E-Print Network [OSTI]

    Robert J. Lewis

    2010-01-01T23:59:59.000Z

    Purpose: To summarize current NRC policy and guidance, which should assist in making informed decisions regarding land disposal of unique low-level radioactive waste streams, including disposal of significant quantities of depleted uranium until a new regulation is implemented. Background: In September 2009, NRC staff conducted two public workshops soliciting early public input on major issues associated with a potential rulemaking for land disposal of unique waste streams including, but not limited to, significant quantities of depleted uranium. During these workshops, a number of stakeholders expressed interest or concern with the review of performance assessments supporting land disposal of unique waste streams prior to completion of the rulemaking process. Discussion: The enclosure contains a summary of existing guidance for reviewing performance assessments with a focus on issues associated with the safe disposal of unique waste streams. NRC staff is providing this guidance to the Agreement States for their information, and for distribution to their licensees, as appropriate. If you have any questions regarding this correspondence, please contact me at 301-415-3340 or the individuals named below.

  16. Selective Electrocatalytic Activity of Ligand Stabilized Copper Oxide Nanoparticles

    SciTech Connect (OSTI)

    Kauffman, Douglas R.; Ohodnicki, Paul R.; Kail, Brian W; Matranga, Christopher

    2011-01-01T23:59:59.000Z

    Ligand stabilization can influence the surface chemistry of Cu oxide nanoparticles (NPs) and provide unique product distributions for electrocatalytic methanol (MeOH) oxidation and CO{sub 2} reduction reactions. Oleic acid (OA) stabilized Cu{sub 2}O and CuO NPs promote the MeOH oxidation reaction with 88% and 99.97% selective HCOH formation, respectively. Alternatively, CO{sub 2} is the only reaction product detected for bulk Cu oxides and Cu oxide NPs with no ligands or weakly interacting ligands. We also demonstrate that OA stabilized Cu oxide NPs can reduce CO{sub 2} into CO with a {approx}1.7-fold increase in CO/H{sub 2} production ratios compared to bulk Cu oxides. The OA stabilized Cu oxide NPs also show 7.6 and 9.1-fold increases in CO/H{sub 2} production ratios compared to weakly stabilized and non-stabilized Cu oxide NPs, respectively. Our data illustrates that the presence and type of surface ligand can substantially influence the catalytic product selectivity of Cu oxide NPs.

  17. Stabilization of Fast Pyrolysis Oil: Post Processing Final Report

    SciTech Connect (OSTI)

    Elliott, Douglas C.; Lee, Suh-Jane; Hart, Todd R.

    2012-03-01T23:59:59.000Z

    UOP LLC, a Honeywell Company, assembled a comprehensive team for a two-year project to demonstrate innovative methods for the stabilization of pyrolysis oil in accordance with DOE Funding Opportunity Announcement (FOA) DE-PS36-08GO98018, Biomass Fast Pyrolysis Oil (Bio-oil) Stabilization. In collaboration with NREL, PNNL, the USDA Agricultural Research Service (ARS), Pall Fuels and Chemicals, and Ensyn Corporation, UOP developed solutions to the key technical challenges outlined in the FOA. The UOP team proposed a multi-track technical approach for pyrolysis oil stabilization. Conceptually, methods for pyrolysis oil stabilization can be employed during one or both of two stages: (1) during the pyrolysis process (In Process); or (2) after condensation of the resulting vapor (Post-Process). Stabilization methods fall into two distinct classes: those that modify the chemical composition of the pyrolysis oil, making it less reactive; and those that remove destabilizing components from the pyrolysis oil. During the project, the team investigated methods from both classes that were suitable for application in each stage of the pyrolysis process. The post processing stabilization effort performed at PNNL is described in this report. The effort reported here was performed under a CRADA between PNNL and UOP, which was effective on March 13, 2009, for 2 years and was subsequently modified March 8, 2011, to extend the term to December 31, 2011.

  18. Discrete-time stabilization of integrators in cascade: Real-time stabilization of a mini-rotorcraft

    E-Print Network [OSTI]

    Sontag, Eduardo

    and Saberi proposed in [3] a linear controller that achieves semi-global stabilization for null controllable parameters generally depend only on the upper bound of the initial state. Lin and Saberi [4] proposed a semi

  19. Before the deluge? Assessing the threat of nuclear leakage from the post-Soviet states

    SciTech Connect (OSTI)

    Potter, W.C.

    1995-10-01T23:59:59.000Z

    Most nuclear security problems are linked to the Russian Federation and the region`s troubled economic, political and social conditions. They are unlikely to be resolved without substantial progress in stabilizing the economy and renewing public trust in government institutions. The author makes a risk assessment of the threat and cites specific cases of theft and diversion of fissile materials and the need for action to control this activity. 17 refs.

  20. Assessment of Metal Media Filters for Advanced Coal-Based Power Generation Applications

    SciTech Connect (OSTI)

    Alvin, M.A.

    2002-09-19T23:59:59.000Z

    Advanced coal and biomass-based gas turbine power generation technologies (IGCC, PFBC, PCFBC, and Hipps) are currently under development and demonstration. Efforts at Siemens Westinghouse Power Corporation (SWPC) have been focused on the development and demonstration of hot gas filter systems as an enabling technology for power generation. This paper reviews SWPC's material and component assessment efforts, identifying the performance, stability, and life of porous metal, advanced alloy, and intermetallic filters under simulated, pressurized fluidized-bed combustion conditions.

  1. NATURAL RESOURCES ASSESSMENT

    SciTech Connect (OSTI)

    D.F. Fenster

    2000-12-11T23:59:59.000Z

    The purpose of this report is to summarize the scientific work that was performed to evaluate and assess the occurrence and economic potential of natural resources within the geologic setting of the Yucca Mountain area. The extent of the regional areas of investigation for each commodity differs and those areas are described in more detail in the major subsections of this report. Natural resource assessments have focused on an area defined as the ''conceptual controlled area'' because of the requirements contained in the U.S. Nuclear Regulatory Commission Regulation, 10 CFR Part 60, to define long-term boundaries for potential radionuclide releases. New requirements (proposed 10 CFR Part 63 [Dyer 1999]) have obviated the need for defining such an area. However, for the purposes of this report, the area being discussed, in most cases, is the previously defined ''conceptual controlled area'', now renamed the ''natural resources site study area'' for this report (shown on Figure 1). Resource potential can be difficult to assess because it is dependent upon many factors, including economics (demand, supply, cost), the potential discovery of new uses for resources, or the potential discovery of synthetics to replace natural resource use. The evaluations summarized are based on present-day use and economic potential of the resources. The objective of this report is to summarize the existing reports and information for the Yucca Mountain area on: (1) Metallic mineral and mined energy resources (such as gold, silver, etc., including uranium); (2) Industrial rocks and minerals (such as sand, gravel, building stone, etc.); (3) Hydrocarbons (including oil, natural gas, tar sands, oil shales, and coal); and (4) Geothermal resources. Groundwater is present at the Yucca Mountain site at depths ranging from 500 to 750 m (about 1,600 to 2,500 ft) below the ground surface. Groundwater resources are not discussed in this report, but are planned to be included in the hydrology section of future revisions of the ''Yucca Mountain Site Description'' (CRWMS M&O 2000c).

  2. Airborne Particulate Threat Assessment

    SciTech Connect (OSTI)

    Patrick Treado; Oksana Klueva; Jeffrey Beckstead

    2008-12-31T23:59:59.000Z

    Aerosol threat detection requires the ability to discern between threat agents and ambient background particulate matter (PM) encountered in the environment. To date, Raman imaging technology has been demonstrated as an effective strategy for the assessment of threat agents in the presence of specific, complex backgrounds. Expanding our understanding of the composition of ambient particulate matter background will improve the overall performance of Raman Chemical Imaging (RCI) detection strategies for the autonomous detection of airborne chemical and biological hazards. Improving RCI detection performance is strategic due to its potential to become a widely exploited detection approach by several U.S. government agencies. To improve the understanding of the ambient PM background with subsequent improvement in Raman threat detection capability, ChemImage undertook the Airborne Particulate Threat Assessment (APTA) Project in 2005-2008 through a collaborative effort with the National Energy Technology Laboratory (NETL), under cooperative agreement number DE-FC26-05NT42594. During Phase 1 of the program, a novel PM classification based on molecular composition was developed based on a comprehensive review of the scientific literature. In addition, testing protocols were developed for ambient PM characterization. A signature database was developed based on a variety of microanalytical techniques, including scanning electron microscopy, FT-IR microspectroscopy, optical microscopy, fluorescence and Raman chemical imaging techniques. An automated particle integrated collector and detector (APICD) prototype was developed for automated collection, deposition and detection of biothreat agents in background PM. During Phase 2 of the program, ChemImage continued to refine the understanding of ambient background composition. Additionally, ChemImage enhanced the APICD to provide improved autonomy, sensitivity and specificity. Deliverables included a Final Report detailing our findings and APICD Gen II subsystems for automated collection, deposition and detection of ambient particulate matter. Key findings from the APTA Program include: Ambient biological PM taxonomy; Demonstration of key subsystems needed for autonomous bioaerosol detection; System design; Efficient electrostatic collection; Automated bioagent recognition; Raman analysis performance validating Td<9 sec; Efficient collection surface regeneration; and Development of a quantitative bioaerosol defection model. The objective of the APTA program was to advance the state of our knowledge of ambient background PM composition. Operation of an automated aerosol detection system was enhanced by a more accurate assessment of background variability, especially for sensitive and specific sensing strategies like Raman detection that are background-limited in performance. Based on this improved knowledge of background, the overall threat detection performance of Raman sensors was improved.

  3. assessment risk assessment: Topics by E-print Network

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

    Procedure 447 A 576-YEAR WEBER RIVER STREAMFLOW RECONSTRUCTION FROM TREE RINGS FOR WATER RESOURCE RISK ASSESSMENT IN THE WASATCH FRONT, UTAH1 Environmental Sciences and Ecology...

  4. assessment performance assessment: Topics by E-print Network

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

    set of 24 solid metals ... Csonka, Gabor I. 17 A consistent multi-user framework for assessing system performance CERN Preprints Summary: Agreeing suitability for purpose and...

  5. Community Readiness Assessments | Department of Energy

    Energy Savers [EERE]

    Community Readiness Assessments Better Buildings Residential Network Program Sustainability Peer Exchange Call Series: Community Readiness Assessments, Call Slides and...

  6. INEEL Source Water Assessment

    SciTech Connect (OSTI)

    Sehlke, Gerald

    2003-03-01T23:59:59.000Z

    The Idaho National Engineering and Environmental Laboratory (INEEL) covers approximately 890 mi2 and includes 12 public water systems that must be evaluated for Source water protection purposes under the Safe Drinking Water Act. Because of its size and location, six watersheds and five aquifers could potentially affect the INEEL’s drinking water sources. Based on a preliminary evaluation of the available information, it was determined that the Big Lost River, Birch Creek, and Little Lost River Watersheds and the eastern Snake River Plain Aquifer needed to be assessed. These watersheds were delineated using the United States Geologic Survey’s Hydrological Unit scheme. Well capture zones were originally estimated using the RESSQC module of the Environmental Protection Agency’s Well Head Protection Area model, and the initial modeling assumptions and results were checked by running several scenarios using Modflow modeling. After a technical review, the resulting capture zones were expanded to account for the uncertainties associated with changing groundwater flow directions, a thick vadose zone, and other data uncertainties. Finally, all well capture zones at a given facility were merged to a single wellhead protection area at each facility. A contaminant source inventory was conducted, and the results were integrated with the well capture zones, watershed and aquifer information, and facility information using geographic information system technology to complete the INEEL’s Source Water Assessment. Of the INEEL’s 12 public water systems, three systems rated as low susceptibility (EBR-I, Main Gate, and Gun Range), and the remainder rated as moderate susceptibility. No INEEL public water system rated as high susceptibility. We are using this information to develop a source water management plan from which we will subsequently implement an INEEL-wide source water management program. The results are a very robust set of wellhead protection areas that will protect the INEEL’s public water systems yet not too conservative to inhibit the INEEL from carrying out its missions.

  7. Cassini data assessment report

    SciTech Connect (OSTI)

    NONE

    1998-08-01T23:59:59.000Z

    On October 15, 1997, the Cassini spacecraft was launched from Cape Canaveral Air Station (CCAS) and is now on its way to the planet Saturn. The functional support provided to NASA by DOE included the Advance Launch Support Group (ALSG). If there had been a launch anomaly, the ALSG would have provided a level of radiological emergency response support adequate to transition into a Federal Radiological Monitoring and Assessment Center (FRMAC). Additional functional radiological emergency response support, as part of the ALSG, included the: (1) Aerial Measurement System (AMS); (2) Atmospheric Release Advisory Capability (ARAC); (3) Geographic Information System (GIS); (4) Emergency Response Data System (ERDS); (5) Radiation Emergency Assistance Center and Training Site (REAC/TS); (6) Field monitoring and sampling; (7) Radioanalysis via RASCAL; (8) Source recovery; and (9) Neutron dosimetry and communications support. This functional support provided the capability to rapidly measure and assess radiological impacts from a launch anomaly. The Radiological Control Officer (RCO) on KSC established a Radiological Control Center (RADCC) as the focal point for all on-site and off-site radiological data and information flow. Scientists and radiological response personnel located at the RADCC managed the field monitoring team on the KSC/CCAS federal properties. Off-site radiological emergency response activities for all public lands surrounding the KSC/CCAS complex were coordinated through the Off-site ALSG located at the National Guard Armory in Cocoa, Florida. All of the in situ measurement data of good quality gathered during the dry run, the first launch attempt and the launch day are listed in this document. The RASCAL analysis results of the air filters and impactor planchets are listed.

  8. Information needs for risk assessment

    SciTech Connect (OSTI)

    DeRosa, C.T.; Choudhury, H.; Schoeny, R.S.

    1990-12-31T23:59:59.000Z

    Risk assessment can be thought of as a conceptual approach to bridge the gap between the available data and the ultimate goal of characterizing the risk or hazard associated with a particular environmental problem. To lend consistency to and to promote quality in the process, the US Environmental Protection Agency (EPA) published Guidelines for Risk Assessment of Carcinogenicity, Developmental Toxicity, Germ Cell Mutagenicity and Exposure Assessment, and Risk Assessment of Chemical Mixtures. The guidelines provide a framework for organizing the information, evaluating data, and for carrying out the risk assessment in a scientifically plausible manner. In the absence of sufficient scientific information or when abundant data are available, the guidelines provide alternative methodologies that can be employed in the risk assessment. 4 refs., 3 figs., 2 tabs.

  9. Core Microturbulence and Edge MHD Interplay and Stabilization by Fast Ions in Tokamak Confined Plasmas

    E-Print Network [OSTI]

    Core Microturbulence and Edge MHD Interplay and Stabilization by Fast Ions in Tokamak Confined Plasmas

  10. Verification of the Equilibrium and MHD Stability Codes within the Integrated Tokamak Modeling Task Force

    E-Print Network [OSTI]

    Verification of the Equilibrium and MHD Stability Codes within the Integrated Tokamak Modeling Task Force

  11. Pollutant Assessments Group Procedures Manual

    SciTech Connect (OSTI)

    Chavarria, D.E.; Davidson, J.R.; Espegren, M.L.; Kearl, P.M.; Knott, R.R.; Pierce, G.A.; Retolaza, C.D.; Smuin, D.R.; Wilson, M.J.; Witt, D.A. (Oak Ridge National Lab., TN (USA)); Conklin, N.G.; Egidi, P.V.; Ertel, D.B.; Foster, D.S.; Krall, B.J.; Meredith, R.L.; Rice, J.A.; Roemer, E.K. (Oak Ridge Associated Universities, Inc., TN (USA))

    1991-02-01T23:59:59.000Z

    This procedures manual combines the existing procedures for radiological and chemical assessment of hazardous wastes used by the Pollutant Assessments Group at the time of manuscript completion (October 1, 1990). These procedures will be revised in an ongoing process to incorporate new developments in hazardous waste assessment technology and changes in administrative policy and support procedures. Format inconsistencies will be corrected in subsequent revisions of individual procedures.

  12. Management and Independent Assessments Guide

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

    2014-03-27T23:59:59.000Z

    The Guide reflects updated standards for assessment practices, international standards, and changes in DOE expectations related to quality assurance (QA). Cancels DOE G 414.1-1B.

  13. Environmental Assessment (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    Nova Scotia Environment conducts environmental assessments on projects and developments to ensure they adhere to the laws and regulations of the province. Developments required to undergo an...

  14. Industrial Process Heating - Technology Assessment

    Office of Environmental Management (EM)

    opportunities for technology improvements that can benefit from 146 high-performance computing (HPC) approaches. 147 148 In the next section, the technology assessment...

  15. An Impact Assessment Model for Distributed Adaptive Security Situation Assessment*

    E-Print Network [OSTI]

    California at Davis, University of

    1 An Impact Assessment Model for Distributed Adaptive Security Situation Assessment* Mark Heckman mechanism is not simply to stop attacks, but to protect a computing resource so that the resource can continue to perform its function. A computing resource, however, is only a component of a larger system

  16. Forestry Commission Equality Impact Assessment 1 Equality Impact Assessment summary

    E-Print Network [OSTI]

    Forestry Commission Equality Impact Assessment 1 Equality Impact Assessment summary Step 10 Name and programmes by which Forestry Commission Wales will help to deliver Woodlands for Wales ­ the Wales woodland of Demographic Equality Strands (2006) National Assembly for Wales · Forestry Commission survey of visitors

  17. SEASONAL RECLAIMED WATER QUALITY; AN ASSESSMENT OFQUALITY; AN ASSESSMENT OF

    E-Print Network [OSTI]

    Fay, Noah

    these concerns? Waste Water Treatment Facilities treat water to Waste Water Treatment Facilities treat water and disinfect anyy microorganisms that may be present The majority of Recycled water produced in ArizonaSEASONAL RECLAIMED WATER QUALITY; AN ASSESSMENT OFQUALITY; AN ASSESSMENT OF BIOLOGICAL VARIABILITY

  18. Preparation of nanodispersed titania using stabilized ammonium nitrate melts

    SciTech Connect (OSTI)

    Raciulete, Monica; Kachina, Anna; Puzenat, Eric [Institut de recherches sur la catalyse et l'environnement de Lyon UMR5256, CNRS-Universite de Lyon 1, 2 avenue Albert Einstein 69626 Villeurbanne Cedex (France); Afanasiev, Pavel, E-mail: pavel.afanasiev@ircelyon.univ-lyon1.f [Institut de recherches sur la catalyse et l'environnement de Lyon UMR5256, CNRS-Universite de Lyon 1, 2 avenue Albert Einstein 69626 Villeurbanne Cedex (France)

    2010-10-15T23:59:59.000Z

    An expedite one-step approach using simple precursors has been proposed to obtain metallic oxide compounds and exemplified by preparation of highly dispersed TiO{sub 2}. The technique consists in heating to 400-500 {sup o}C of molten ammonium nitrate stabilized with an organic nitrogen-containing compound (urea, melamine, ammonium oxalate) and containing dissolved metal salt precursor (TiOCl{sub 2}). The crystallites of the resulting TiO{sub 2} demonstrated variable size and shape as a function of stabilizer used. Their activity in photocatalytic oxidation of formic acid also depends on the nature of the stabilizer. The catalysts as-prepared showed high photocatalytic performance, superior to that of the Degussa P25 reference. Nitrogen containing stabilizers play a double role of increasing the process safety and modifying the properties of the solid products. - Graphical abstract: Ammonium nitrate melts stabilized by nitrogen-containing organic molecules can be applied for expedite one-step preparation of highly dispersed oxides, as exemplified by synthesis of titania photocatalysts.

  19. ON THE STABILITY OF SUPER-EARTH ATMOSPHERES

    SciTech Connect (OSTI)

    Heng, Kevin [ETH Zuerich, Institute for Astronomy, Wolfgang-Pauli-Strasse 27, CH-8093, Zuerich (Switzerland); Kopparla, Pushkar [ETH Zuerich, Institute for Atmospheric and Climate Science, Universitaetstrasse 16, CH-8092, Zuerich (Switzerland)

    2012-07-20T23:59:59.000Z

    We investigate the stability of super-Earth atmospheres around M stars using a seven-parameter, analytical framework. We construct stability diagrams in the parameter space of exoplanetary radius versus semimajor axis and elucidate the regions in which the atmospheres are stable against the condensation of their major constituents, out of the gas phase, on their permanent nightside hemispheres. We find that super-Earth atmospheres that are nitrogen-dominated (Earth-like) occupy a smaller region of allowed parameter space, compared to hydrogen-dominated atmospheres, because of the dual effects of diminished advection and enhanced radiative cooling. Furthermore, some super-Earths which reside within the habitable zones of M stars may not possess stable atmospheres, depending on the mean molecular weight and infrared photospheric pressure of their atmospheres. We apply our stability diagrams to GJ 436b and GJ 1214b, and demonstrate that atmospheric compositions with high mean molecular weights are disfavored if these exoplanets possess solid surfaces and shallow atmospheres. Finally, we construct stability diagrams tailored to the Kepler data set, for G and K stars, and predict that about half of the exoplanet candidates are expected to harbor stable atmospheres if Earth-like conditions are assumed. We include 55 Cancri e and CoRoT-7b in our stability diagram for G stars.

  20. Stability of glycol nanofluids -- the consensus between theory and measurement

    E-Print Network [OSTI]

    Ibrahim Palabiyik; Sanjeeva Witharana; Zenfira Musina; Yulong Ding

    2012-08-21T23:59:59.000Z

    Formulation of stable nanofluids containing ZnO, Al2O3 and TiO2 nanoparticles in propylene glycol (PG), ethylene glycol (EG) and 50wt% mixtures of PG and EG in water (WPG, WEG) were investigated, with and without the presence of surfactants. Nanofluid samples of particle concentrations 1-9wt% were prepared by dispersive method. Surfactant presence was in the range of 0-1wt%/wt% of nanoparticles. Visual observation, particle size measurement and zeta potential analysis were performed to evaluate the dispersion stability. In overall the PG-based samples were found to be the most stable suspensions. The effect of base fluid on particle size and the effect of day light on nanofluid stability were also examined as a function of time. TiO2-PG samples showed a colour change when exposed to sunlight. Sunlight also caused the PG based TiO2 and Al2O3 nanofluid to increase their particle sizes by up to 45% in the course of 3 days. As for stability, the sedimentation velocity was observed to be a key parameter. Finally by comparison of settling theory with experiments, a stability boundary was demarcated to identify stable and unstable nanofluids. Keywords: Nanoparticles, Nanofluids, Glycols, Formulation, Stability, Particle size