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Sample records for analysis icp interference

  1. A Nash Equilibrium Analysis for Interference Coupled Wireless Systems

    E-Print Network [OSTI]

    Alpcan, Tansu

    A Nash Equilibrium Analysis for Interference Coupled Wireless Systems Siddharth Naik Technical.boche@mk.tu-berlin.de Abstract--This paper studies the properties of Nash equilib- rium for noncooperative games in interference are investigated to establish the existence and uniqueness of a Nash equilibrium solution. These properties play

  2. ICP-MS Workshop

    SciTech Connect (OSTI)

    Carman, April J.; Eiden, Gregory C.

    2014-11-01

    This is a short document that explains the materials that will be transmitted to LLNL and DNN HQ regarding the ICP-MS Workshop held at PNNL June 17-19th. The goal of the information is to pass on to LLNL information regarding the planning and preparations for the Workshop at PNNL in preparation of the SIMS workshop at LLNL.

  3. Separating the Effect of Independent Interference Sources with Rayleigh Faded Signal Link: Outage Analysis and Applications

    E-Print Network [OSTI]

    Kahlon, Arshdeep S; Periyalwar, Shalini; Yanikomeroglu, Halim

    2012-01-01

    We show that, for independent interfering sources and a signal link with exponentially distributed received power, the total probability of outage can be decomposed as a simple expression of the outages from the individual interfering sources. We give a mathematical proof of this result, and discuss some immediate implications, showing how it results in important simplifications to statistical outage analysis. We also discuss its application to two active topics of study: spectrum sharing, and sum of interference powers (e.g., lognormal) analysis.

  4. Design and analysis of a scanning beam interference lithography system for patterning gratings with nanometer-level distortions

    E-Print Network [OSTI]

    Konkola, Paul Thomas, 1973-

    2003-01-01

    This thesis describes the design and analysis of a system for patterning large-area gratings with nanometer level phase distortions. The novel patterning method, termed scanning beam interference lithography (SBIL), uses ...

  5. Standard test method for the determination of impurities in plutonium metal: acid digestion and inductively coupled plasma-mass spectroscopy (ICP-MS) analysis

    E-Print Network [OSTI]

    American Society for Testing and Materials. Philadelphia

    2006-01-01

    1.1 This Test Method covers the determination of 58 trace elements in plutonium (Pu) metal. The Pu sample is dissolved in acid, and the concentration of the trace impurities are determined by Inductively Coupled Plasma-Mass Spectroscopy (ICP-MS). 1.2 This Test Method is specific for the determination of trace impurities in Pu metal. It may be applied to other types of Pu materials, such as Pu oxides, if the samples are dissolved and oxidized to the Pu(IV) state. However, it is the responsibility of the user to evaluate the performance of other matrices. 1.3 This standard does not purport to address all of the safety concerns associated with its use. It is the responsibility of the user of this method to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use of this standard.

  6. Theoretical analysis on quantum interference effect in fast-light media

    E-Print Network [OSTI]

    Xu, Datang; Huang, Guoxiang

    2015-01-01

    We make a systematic theoretical analysis on the quantum interference (QI) effects in various fast-light media (including gain-assisted $N$, gain-assisted ladder-I, and gain-assisted ladder-II atomic systems). We show that such fast-light media are capable of not only completely eliminating the absorption but also suppressing the gain of signal field, and hence provide the possibility to realize a stable propagation of the signal field with a superluminal velocity. We find that there is a destructive (constructive) QI effect in gain-assisted ladder-I (gain-assisted N) system, but no QI in the gain-assisted ladder-II system; furthermore, a crossover from destructive (constructive) QI to Autler-Townes splitting may occur for the gain-assisted ladder-I (gain-assisted N) system when the control field of the system is modulated. Our theoretical analysis can be applied to other multi-level systems, and the results obtained may have promising applications in optical and quantum information processing and transmissio...

  7. ICP (Institutional Conservation Program) monitoring

    SciTech Connect (OSTI)

    Not Available

    1989-08-01

    The following pages present the final report of activities undertaken by Carpenter Environmental Associates, Inc. (CEA) in carrying out its contractual obligations for the New York Support Office of the US Department of Energy. The contract calls for the field monitoring/review of DOE grants to schools and hospitals under the Institutional Conservation Program (ICP). This final report is the result of a review of statistics and findings gathered over the period of the contract, which included monitoring visits to 50 grantees in New York State and New Jersey. The report is intended to highlight aspects of the monitoring project and to make recommendations. This report is organized into four sections: Section 1 details the steps taken by CEA in organizing and implementing the review; Section 2 presents program statistics; Section 3 discusses monitoring review concerns, implementation issues and commonly observed problems/accomplishments; and Section 4 lists recommendations. Taken as a whole, this final report is intended to convey a complete picture of CEA's activities under this contract. 25 tabs.,

  8. CHAPTER 7. BERYLLIUM ANALYSIS BY NON-PLASMA BASED METHODS

    SciTech Connect (OSTI)

    Ekechukwu, A

    2009-04-20

    The most common method of analysis for beryllium is inductively coupled plasma atomic emission spectrometry (ICP-AES). This method, along with inductively coupled plasma mass spectrometry (ICP-MS), is discussed in Chapter 6. However, other methods exist and have been used for different applications. These methods include spectroscopic, chromatographic, colorimetric, and electrochemical. This chapter provides an overview of beryllium analysis methods other than plasma spectrometry (inductively coupled plasma atomic emission spectrometry or mass spectrometry). The basic methods, detection limits and interferences are described. Specific applications from the literature are also presented.

  9. Asymptotic analysis of three-dimensional pressure interference tests: A point source solution

    E-Print Network [OSTI]

    Tartakovsky, Daniel M.

    . Tartakovsky Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico, USA Received 21 June that complicate the analysis. External factors such as recharge and barometric pressure fluctuations can corrupt

  10. Interference and outage analysis in a cognitive radio network with beacon Mahsa Derakhshani, Tho Le-Ngoc, Mai Vu

    E-Print Network [OSTI]

    Vu, Mai

    with verification by simulation. The probabilistic properties of interference power caused by SU's are investigated of this paper is organized as follows. After a brief overview of the system configuration and model, Section II the conclusions. II. SYSTEM AND INTERFERENCE MODELS A. System Configuration and Model We consider a circular area

  11. This research reports on the investigation into the synthesis and stabilization of iron oxide nanoparticles for theranostic applications using amine-epoxide polymers. Although theranostic agents such as magnetic

    E-Print Network [OSTI]

    , Iron oxide content (ICP analysis) and superconducting quantum interference devices (SQUID) analysis

  12. MICROANALYSIS OF SIDEROPHILE ELEMENTS IN FREMDLINGE USING LASER ABLATION ICP-MS. A. J. Campbell

    E-Print Network [OSTI]

    /Os ra- tios measured by neutron activation analysis, suggest that Fremdlinge within a single CAI may vein in Allende (CV3-oxidized). Experimental: The laser ablation system utilized a CETAC LSX-200 laser ablation peripheral with a Fin- nigan MAT Element ICP mass spectrometer [4, 5]. The isotopes monitored were

  13. ICP (Institutional Conservation Program) monitoring: Final report

    SciTech Connect (OSTI)

    Not Available

    1986-09-01

    The following pages present the Final Report of activities undertaken by Arawak in carrying out its contractual obligations for the New York Support Office of US Department of Energy. The contract calls for the field monitoring/review of DOE grants to schools and hospitals under the Institutional Conservation Program (ICP). This Final Report is the result of a review of statistics and findings gathered over the period of the contract, which included monitoring visits to 78 grantees in New York State and New Jersey. The report is intended to highlight aspects of the monitoring project and to make recommendations.

  14. ICP Solar Technologies Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas: Energy Resources JumpNewTexas:Hydrothermally Deposited RockLLC44ICM Inc Jump to:ICP

  15. Operating Procedures for the SAMCO ICP RIE System

    E-Print Network [OSTI]

    Reif, Rafael

    1 Operating Procedures for the SAMCO ICP RIE System General Overview: The purpose of the SAMCO semiconductors using chlorine containing etch gases. To accomplish this objective, the ICP-RIE system utilizes high- density plasma that is created through the use of two RF power supplies. In addition, the system

  16. The low-frequency environment of the Murchison Widefield Array: radio-frequency interference analysis and mitigation

    E-Print Network [OSTI]

    Offringa, A R; Hurley-Walker, N; Kaplan, D L; Barry, N; Beardsley, A P; Bell, M E; Bernardi, G; Bowman, J D; Briggs, F; Callingham, J R; Cappallo, R J; Carroll, P; Deshpande, A A; Dillon, J S; Dwarakanath, K S; Ewall-Wice, A; Feng, L; For, B -Q; Gaensler, B M; Greenhill, L J; Hancock, P; Hazelton, B J; Hewitt, J N; Hindson, L; Jacobs, D C; Johnston-Hollitt, M; Kapi?ska, A D; Kim, H -S; Kittiwisit, P; Lenc, E; Line, J; Loeb, A; Lonsdale, C J; McKinley, B; McWhirter, S R; Mitchell, D A; Morales, M F; Morgan, E; Morgan, J; Neben, A R; Oberoi, D; Ord, S M; Paul, S; Pindor, B; Pober, J C; Prabu, T; Procopio, P; Riding, J; Shankar, N Udaya; Sethi, S; Srivani, K S; Staveley-Smith, L; Subrahmanyan, R; Sullivan, I S; Tegmark, M; Thyagarajan, N; Tingay, S J; Trott, C M; Webster, R L; Williams, A; Williams, C L; Wu, C; Wyithe, J S; Zheng, Q

    2015-01-01

    The Murchison Widefield Array (MWA) is a new low-frequency interferometric radio telescope built in Western Australia at one of the locations of the future Square Kilometre Array (SKA). We describe the automated radio-frequency interference (RFI) detection strategy implemented for the MWA, which is based on the AOFlagger platform, and present 72-231-MHz RFI statistics from 10 observing nights. RFI detection removes 1.1% of the data. RFI from digital TV (DTV) is observed 3% of the time due to occasional ionospheric or atmospheric propagation. After RFI detection and excision, almost all data can be calibrated and imaged without further RFI mitigation efforts, including observations within the FM and DTV bands. The results are compared to a previously published Low-Frequency Array (LOFAR) RFI survey. The remote location of the MWA results in a substantially cleaner RFI environment compared to LOFAR's radio environment, but adequate detection of RFI is still required before data can be analysed. We include speci...

  17. Evaluation of Ultra-Low Background Materials for Uranium and Thorium Using ICP-MS

    SciTech Connect (OSTI)

    Hoppe, Eric W.; Overman, Nicole R.; LaFerriere, Brian D.

    2013-08-08

    An increasing number of physics experiments require low background materials for their construction. The presence of Uranium and Thorium and their progeny in these materials present a variety of unwanted background sources for these experiments. The sensitivity of the experiments continues to drive the necessary levels of detection ever lower as well. This requirement for greater sensitivity has rendered direct radioassay impractical in many cases requiring large quantities of material, frequently many kilograms, and prolonged counting times, often months. Other assay techniques have been employed such as Neutron Activation Analysis but this requires access to expensive facilities and instrumentation and can be further complicated and delayed by the formation of unwanted radionuclides. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) is a useful tool and recent advancements have increased the sensitivity particularly in the elemental high mass range of U and Th. Unlike direct radioassay, ICP-MS is a destructive technique since it requires the sample to be in liquid form which is aspirated into a high temperature plasma. But it benefits in that it usually requires a very small sample, typically about a gram. Here we will discuss how a variety of low background materials such as copper, polymers, and fused silica are made amenable to ICP-MS assay and how the arduous task of maintaining low backgrounds of U and Th is achieved.

  18. Estimation of the formation rates of polyatomic species of heavy metals in plutonium analyses using a multicollector ICP-MS with a desolvating nebulizer

    SciTech Connect (OSTI)

    Mitroshkov, Alexandre V. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Olsen, Khris B. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Thomas, Linda M. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2015-01-01

    The analyses of IAEA and environmental samples for Plutonium isotopic content are conducted normally at very low concentrations of Pu–usually in the range of part per trillion level and even more often at the parts per quadrillion level. To analyze such low concentrations, the interferences in the analytical solution must be reduced as much as possible. Polyatomic interferences (PIs), formed by the heavy metals (HMs) from Hf to Bi are known to create the problems for Pu isotopic analyses, because even the relatively high resolution of a modern multicollector ICP-MS is not enough to separate Pu isotopes from this PIs in most of the cases. Desolvating nebulizers (DSN) (e.g. APEX and AridusII) reduce significantly the formation of PIs compare to the use of wet plasma. The purpose of this work was to investigate the rate of formation of PIs, produced by HMs, when high resolution MC ICP-MS with desolvating nebulizer was used for Pu isotopic analyses and to estimate the influence of the metals present in the sample on the results of analyses. The NU Plasma HR Multicollector and AridusII desolvating nebulizer were used in this investigation. This investigation was done for all Pu isotopes normally analyzed by ICP-MS, including ²??Pu, with the exception of ²³?Pu, which most of the time can’t be analyzed by ICP-MS, because of the overwhelming presence of ²³?U in the solutions. The PI formation rates were determined and reported for all 12 HMs from Hf to Bi. Selected IAEA samples were scanned for the presence of HMs and the influence of HMs on the results of Pu isotopic analyses was evaluated. It was found that the implemented separation procedure provides sufficient separation of HM from Pu, although the effect of PIs on the measurement of low level isotopes like ²?¹Pu and ²?²Pu in some cases can still be observed.

  19. N-Terminal Phosphorylation Sites of Herpes Simplex Virus 1 ICP0 Differentially Regulate Its Activities and Enhance Viral Replication

    E-Print Network [OSTI]

    Mostafa, Heba H.; Thompson, Thornton W.; Davido, David J.

    2013-02-01

    The herpes simplex virus 1 (HSV-1) infected cell protein 0 (ICP0) is an immediate-early phosphoprotein that transactivates viral gene expression. Evidence suggests that phosphorylation regulates the functions of ICP0, and ...

  20. The effect of laser pulse duration on ICP-MS signal intensity, elemental fractionation, and detection limits

    E-Print Network [OSTI]

    Harilal, S. S.

    and alloys,7,8 geology,9 archaeology,6,10 biological samples,11 radioactive waste anal- ysis,9 etc-stoichiometric ICP-MS results, can occur during laser ablation, during transport from the ablation chamber to the ICP

  1. Interference Effects in the Brain

    E-Print Network [OSTI]

    Jerzy Szwed

    2008-03-14

    Interference effects are the most spectacular manifestation of the wave nature of phenomena. This note proposes a systematic search for such effects in the brain.

  2. Glass particles produced by laser ablation for ICP-MS measurements

    E-Print Network [OSTI]

    Gonzalez, J.; Liu, C.; Wen, S.; Mao, X.; Russo, R.E.

    2008-01-01

    Glass particles produced by laser ablation for ICP-MS266nm) was used to generate glass particles from two sets ofWhen the current data on glass were compared with the metal

  3. APPLICATION OF COLUMN EXTRACTION METHOD FOR IMPURITIES ANALYSIS ON HB-LINE PLUTONIUM OXIDE IN SUPPORT OF MOX FEED PRODUCT SPECIFICATIONS

    SciTech Connect (OSTI)

    Jones, M.; Diprete, D.; Wiedenman, B.

    2012-03-20

    The current mission at H-Canyon involves the dissolution of an Alternate Feedstocks 2 (AFS-2) inventory that contains plutonium metal. Once dissolved, HB-Line is tasked with purifying the plutonium solution via anion exchange, precipitating the Pu as oxalate, and calcining to form plutonium oxide (PuO{sub 2}). The PuO{sub 2} will provide feed product for the Mixed Oxide (MOX) Fuel Fabrication Facility, and the anion exchange raffinate will be transferred to H-Canyon. The results presented in this report document the potential success of the RE resin column extraction application on highly concentrated Pu samples to meet MOX feed product specifications. The original 'Hearts Cut' sample required a 10000x dilution to limit instrument drift on the ICP-MS method. The instrument dilution factors improved to 125x and 250x for the sample raffinate and sample eluent, respectively. As noted in the introduction, the significantly lower dilutions help to drop the total MRL for the analyte. Although the spike recoveries were half of expected in the eluent for several key elements, they were between 94-98% after Nd tracer correction. It is seen that the lower ICD limit requirements for the rare earths are attainable because of less dilution. Especially important is the extremely low Ga limit at 0.12 {mu}g/g Pu; an ICP-MS method is now available to accomplish this task on the sample raffinate. While B and V meet the column A limits, further development is needed to meet the column B limits. Even though V remained on the RE resin column, an analysis method is ready for investigation on the ICP-MS, but it does not mean that V cannot be measured on the ICP-ES at a low dilution to meet the column B limits. Furthermore, this column method can be applicable for ICP-ES as shown in Table 3-2, in that it trims the sample of Pu, decreasing and sometimes eliminating Pu spectral interferences.

  4. Chapter 7.22 SPTS ICP-SR Deep Reactive Ion Etch

    E-Print Network [OSTI]

    Healy, Kevin Edward

    Chapter 7.22 SPTS ICP-SR Deep Reactive Ion Etch (sts2) (584) 1.0 Equipment Purpose 1.1 The STS2 ICP to achieve high aspect ratios. The system can be used for deep Si trench etching of a single 6-inch (150 mm) substrate. The process chamber is configured for deep Si trench etching. The plasma is inductively coupled

  5. Low-cost interference lithography

    E-Print Network [OSTI]

    Fucetola, Corey P.

    The authors report demonstration of a low-cost ( ? 1000 USD) interference lithography system based on a Lloyd’s mirror interferometer that is capable of ? 300?nm pitch patterning. The components include only a 405?nm GaN ...

  6. Interference Channel with State Information 

    E-Print Network [OSTI]

    Zhang, Lili

    2012-10-19

    In this dissertation, we study the state-dependent two-user interference channel, where the state information is non-causally known at both transmitters but unknown to either of the receivers. We first propose two coding ...

  7. Quantum modulation against electromagnetic interference

    E-Print Network [OSTI]

    Juan Carlos Garcia-Escartin

    2014-11-26

    Periodic signals in electrical and electronic equipment can cause interference in nearby devices. Randomized modulation of those signals spreads their energy through the frequency spectrum and can help to mitigate electromagnetic interference problems. The inherently random nature of quantum phenomena makes them a good control signal. I present a quantum modulation method based on the random statistics of quantum light. The paper describes pulse width modulation schemes where a Poissonian light source acts as a random control that spreads the energy of the potential interfering signals. I give an example application for switching-mode power supplies and comment the further possibilities of the method.

  8. Monitoring inspections of ICP program ECM and TA grantees. Final report

    SciTech Connect (OSTI)

    Not Available

    1983-03-01

    The activities undertaken to review DOE grants to schools, hospitals and municipalities under the Institutional Conservation Program (ICP) are reported. This Final Report is the result of a review of statistics and findings gathered over the period of the contract. It is intended to highlight aspects of the monitoring project and to make recommendations. This report is organized into four sections: the steps taken in organizing and implementing the review; statistics regarding the 92 grants reviewed; some of the common factors which fostered success or problems in the administration of the ICP grants; and recommendations.

  9. Measuring Interference Between Live Datacenter Applications

    E-Print Network [OSTI]

    Cortes, Corinna

    Measuring Interference Between Live Datacenter Applications Melanie Kambadur Columbia University in datacenters due to contention over shared hardware resources. Unfortunately, understanding interference in live datacenters is more difficult than in controlled environments or on simpler architectures. Most

  10. Improving Alpha Spectrometry Energy Resolution by Ion Implantation with ICP-MS

    SciTech Connect (OSTI)

    Dion, Michael P.; Liezers, Martin; Farmer, Orville T.; Miller, Brian W.; Morley, Shannon M.; Barinaga, Charles J.; Eiden, Gregory C.

    2015-01-01

    We report results of a novel technique using an Inductively Coupled Plasma Mass Spectrometer (ICP-MS) as a method of source preparation for alpha spectrometry. This method produced thin, contaminant free 241Am samples which yielded extraordinary energy resolution which appear to be at the lower limit of the detection technology used in this research.

  11. Neural Mechanisms of Interference Control in Working Memory: Effects of Interference Expectancy and Fluid

    E-Print Network [OSTI]

    ) Neural Mechanisms of Interference Control in Working Memory: Effects of Interference Expectancy and FluidNeural Mechanisms of Interference Control in Working Memory: Effects of Interference Expectancy and Fluid Intelligence Gregory C. Burgess1 *, Todd S. Braver2 1 Institute of Cognitive Science, University

  12. Long working distance interference microscope

    DOE Patents [OSTI]

    Sinclair, Michael B.; DeBoer, Maarten P.; Smith, Norman F.

    2004-04-13

    Disclosed is a long working distance interference microscope suitable for three-dimensional imaging and metrology of MEMS devices and test structures on a standard microelectronics probe station. The long working distance of 10-30 mm allows standard probes or probe cards to be used. This enables nanometer-scale 3-D height profiles of MEMS test structures to be acquired across an entire wafer. A well-matched pair of reference/sample objectives is not required, significantly reducing the cost of this microscope, as compared to a Linnik microinterferometer.

  13. Communication in a Poisson Field of Interferers-Part I: Interference Distribution and Error Probability

    E-Print Network [OSTI]

    Pinto, Pedro C.

    We present a mathematical model for communication subject to both network interference and noise. We introduce a framework where the interferers are scattered according to a spatial Poisson process, and are operating ...

  14. MIMO Interference Cancelation via Network Formation Game

    E-Print Network [OSTI]

    Liu, K. J. Ray

    maximization of mutual information in the MIMO Gaussian interference chan- nel in a fully distributed manner com- munication systems where multiple links share the same communication medium. Two typical examples of outgoing cooperative set and incoming cooperative set, which stands for the links alleviating interference

  15. ICP External

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergy HeadquartersFuelB IMSofNewsletterGuidingUpdateofMarch 21, 2012 ICEIWGSeptember 21,

  16. Interference Alignment by Motion Swarun Kumar

    E-Print Network [OSTI]

    Hochberg, Michael

    to incorporate into recent slid- ing antennas available on the market. We implemented our design on USRPs extend the gains of interference alignment to scenarios with single antenna systems, such as sensors

  17. Minimum Mean Squared Error Interference Alignment

    E-Print Network [OSTI]

    Honig, Michael L.

    ¨unchen, 80290 Munich, Germany Email: {dschmidt,utschick}@tum.de Department of Electrical Engineering of interference prices. Given a set of announced prices, a transmitter selects a resource (e.g., power or beam

  18. Optimal Distributed Beamforming for MISO Interference Channels 

    E-Print Network [OSTI]

    Qiu, Jiaming

    2012-07-16

    In this thesis, the problem of quantifying the Pareto optimal boundary of the achievable rate region is considered over multiple-input single-output(MISO)interference channels, where the problem boils down to solving a sequence of convex feasibility...

  19. Ancestral Polynesian Pottery Production and Exchange Analysis Using LA-ICP-MS 

    E-Print Network [OSTI]

    Bartek, Christopher

    2009-06-09

    allows for a clay?s vitrification temperature to decrease during the firing process. Temper?s affect on the final product can determine color and increase porosity or strength of the pot (Rice 1987; Shepard 1954). Temper choice is highly variable...

  20. Modeling context-dependent aspect interference using default logics

    E-Print Network [OSTI]

    Cazzola, Walter

    the domotica world. Keywords: Aspect interactions, knowledge, interference, default logics. 1 Introduction

  1. Fundamental and methodological investigations for the improvement of elemental analysis by inductively coupled plasma mass soectrometry

    SciTech Connect (OSTI)

    Ebert, Christopher Hysjulien [Ames Laboratory

    2012-07-27

    This dissertation describes a variety of studies meant to improve the analytical performance of inductively coupled plasma mass spectrometry (ICP-MS) and laser ablation (LA) ICP-MS. The emission behavior of individual droplets and LA generated particles in an ICP is studied using a high-speed, high frame rate digital camera. Phenomena are observed during the ablation of silicate glass that would cause elemental fractionation during analysis by ICP-MS. Preliminary work for ICP torch developments specifically tailored for the improvement of LA sample introduction are presented. An abnormal scarcity of metal-argon polyatomic ions (MAr{sup +}) is observed during ICP-MS analysis. Evidence shows that MAr{sup +} ions are dissociated by collisions with background gas in a shockwave near the tip of the skimmer cone. Method development towards the improvement of LA-ICP-MS for environmental monitoring is described. A method is developed to trap small particles in a collodion matrix and analyze each particle individually by LA-ICP-MS.

  2. Studies on the content of heavy metals in Aries River using ICP-MS

    SciTech Connect (OSTI)

    Voica, Cezara Kovacs, Melinda Feher, Ioana

    2013-11-13

    Among the industrial branches, the mining industry has always been an important source of environmental pollution, both aesthetically and chemically. Through this paper results of ICP-MS characterization of Aries River Basin are reported. Mining activities from this area has resulted in contamination of environment and its surrounding biota. This is clearly evidenced in analyzed water samples, especially from Baia de Aries site where increased amount of trace elements as Cr, Zn, As, Se, Cd, Pb and U were founded. Also in this site greater amount of rare earth elements was evidenced also. Through monitoring of Aries River from other non-mining area it was observed that the quantitative content of heavy metals was below the maximum permissible levels which made us to conclude that the water table wasn't seriously affected (which possibly might be attributed to the cessation of mining activities in this area from a few years ago)

  3. Ultrafast laser ablation ICP-MS: role of spot size, laser fluence, and repetition rate in signal intensity

    E-Print Network [OSTI]

    Harilal, S. S.

    Ultrafast laser ablation ICP-MS: role of spot size, laser fluence, and repetition rate in signal,a Richard E. Russob and Ahmed Hassaneina Ultrafast laser ablation inductively coupled plasma mass system. Though ultrafast laser ablation sample introduction provides better accuracy and precision

  4. The influence of laser pulse duration and energy on ICP-MS signal intensity, elemental fractionation, and

    E-Print Network [OSTI]

    Harilal, S. S.

    of the thermal processes, heating of the sample can result in preferential evaporation, melting, and ablationThe influence of laser pulse duration and energy on ICP-MS signal intensity, elemental width, irradiance, repetition rate, and pulse energy, are critical parameters which influence the laser

  5. Head-to-Tail Intramolecular Interaction of Herpes Simplex Virus Type 1 Regulatory Protein ICP27 Is Important for Its Interaction with Cellular mRNA Export Receptor TAP/NXF1

    E-Print Network [OSTI]

    Hernandez, Felicia P; Sandri-Goldin, Rozanne M

    2010-01-01

    ICP27 interacts with the export factor Aly/REF to direct1 intronless RNAs to the TAP export pathway. J. Virol. 76:RGG box regulates ICP27 export and is required for efficient

  6. Superfluid {sup 4}He Quantum Interference Grating

    SciTech Connect (OSTI)

    Sato, Yuki; Joshi, Aditya; Packard, Richard

    2008-08-22

    We report the first observation of quantum interference from a grating structure consisting of four weak link junctions in superfluid {sup 4}He. We find that an interference grating can be implemented successfully in a superfluid matter wave interferometer to enhance its sensitivity while trading away some of its dynamic range. We also show that this type of device can be used to measure absolute quantum mechanical phase differences. The results demonstrate the robust nature of superfluid phase coherence arising from quantum mechanics on a macroscopic scale.

  7. Phonon interference effects in molecular junctions

    SciTech Connect (OSTI)

    Markussen, Troels

    2013-12-28

    We study coherent phonon transport through organic, ?-conjugated molecules. Using first principles calculations and Green's function methods, we find that the phonon transmission function in cross-conjugated molecules, like meta-connected benzene, exhibits destructive quantum interference features very analogous to those observed theoretically and experimentally for electron transport in similar molecules. The destructive interference features observed in four different cross-conjugated molecules significantly reduce the thermal conductance with respect to linear conjugated analogues. Such control of the thermal conductance by chemical modifications could be important for thermoelectric applications of molecular junctions.

  8. Televisions, Video Privacy, and Powerline Electromagnetic Interference

    E-Print Network [OSTI]

    Washington at Seattle, University of

    that the power supplies of modern TVs produce discernible electromagnetic interference (EMI) signatures. For example, utility (power) companies are seeking to deploy smart meters that measure fine-grained power on servers or to redistribute to lists, requires prior specific permission and/or a fee. CCS'11, October 17

  9. Scheduling Wireless Links with Successive Interference Cancellation

    E-Print Network [OSTI]

    Scheduling Wireless Links with Successive Interference Cancellation Olga Goussevskaia Department@tik.ee.ethz.ch Abstract--In this paper we study the problem of scheduling wireless links in a model where successive in strength significantly. It has been shown that the problem of scheduling wireless links with successive

  10. Stochastic Ordering of Interferences in Large-scale Wireless Networks

    E-Print Network [OSTI]

    Lee, Junghoon

    2012-01-01

    Stochastic orders are binary relations defined on probability distributions which capture intuitive notions like being larger or being more variable. This paper introduces stochastic ordering of interference distributions in large-scale networks modeled as point process. Interference is the main performance-limiting factor in most wireless networks, thus it is important to understand its statistics. Since closed-form results for the distribution of interference for such networks are only available in limited cases, interference of networks are compared using stochastic orders, even when closed form expressions for interferences are not tractable. We show that the interference from a large-scale network depends on the fading distributions with respect to the stochastic Laplace transform order. The condition for path-loss models is also established to have stochastic ordering between interferences. The stochastic ordering of interferences between different networks are also shown. Monte-Carlo simulations are us...

  11. Transmission Policies for Asymmetric Interference Channels with Energy Harvesting Nodes

    E-Print Network [OSTI]

    Yener, Aylin

    Transmission Policies for Asymmetric Interference Channels with Energy Harvesting Nodes Kaya power policies to maximize sum capacity in an energy harvesting setting. It is shown derive optimal power allocation policies for interference channels comprised of energy harvesting

  12. PERSPECTIVES Can resistance against quorum-sensing interference

    E-Print Network [OSTI]

    Wood, Thomas K.

    interference-resistant bacteria in a clinical setting. The ISME Journal advance online publication, 29 May 2015PERSPECTIVES Can resistance against quorum-sensing interference be selected? Rodolfo García to resistance in bacterial populations. However, recently, resistance mechanisms against well

  13. A mathematical theory of network interference and its applications

    E-Print Network [OSTI]

    Shepp, Lawrence A.

    n this paper, we introduce a mathematical framework for the characterization of network interference in wireless systems. We consider a network in which the interferers are scattered according to a spatial Poisson process ...

  14. On Interference-aware Provisioning for Cloud-based Big Data Processing

    E-Print Network [OSTI]

    Liu, Jiangchuan (JC)

    On Interference-aware Provisioning for Cloud-based Big Data Processing Yi YUAN, Haiyang WANG, Dan--Recent advances in cloud-based big data analysis offers a convenient mean for providing an elastic and cost and IBM deploy various of big data systems on their cloud platforms, aiming to occupy the huge market

  15. Determination of {sup 140}La fission product interference factor for INAA

    SciTech Connect (OSTI)

    Ribeiro Jr, Iberê S.; Genezini, Frederico A.; Saiki, Mitiko; Zahn, Guilherme S.

    2014-11-11

    Instrumental Neutron Activation Analysis (INAA) is a technique widely used to determine the concentration of several elements in several kinds of matrices. However if the sample of interest has higher relative uranium concentration the obtained results can be interfered by the uranium fission products. One of these cases that is affected by interference due to U fission is the {sup 140}La, because this radioisotope used in INAA for the determination of concentration the La is also produced by the {sup ?}? of {sup 140}Ba, an uranium fission product. The {sup 140}La interference factor was studied in this work and a factor to describe its time dependence was obtained.

  16. ERP Correlates of Interference R248B 1 Event-related potential correlates of interference effects on recognition memory

    E-Print Network [OSTI]

    Wagner, Anthony

    ERP Correlates of Interference R248B 1 Event-related potential correlates of interference effects: 4000 words In Press, Psychonomic Bulletin & Review #12;ERP Correlates of Interference R248B 2 Abstract addressed this question. Here, we used event-related potentials (ERPs) to test the predictions

  17. Surface Cleaning Techniques: Ultra-Trace ICP-MS Sample Preparation and Assay of HDPE

    SciTech Connect (OSTI)

    Overman, Nicole R.; Hoppe, Eric W.; Addleman, Raymond S.

    2013-06-01

    The world’s most sensitive radiation detection and assay systems depend upon ultra-low background (ULB) materials to reduce unwanted radiological backgrounds. Herein, we evaluate methods to clean HDPE, a material of interest to ULB systems and the means to provide rapid assay of surface and bulk contamination. ULB level material and ultra-trace level detection of actinide elements is difficult to attain, due to the introduction of contamination from sample preparation equipment such as pipette tips, sample vials, forceps, etc. and airborne particulate. To date, literature available on the cleaning of such polymeric materials and equipment for ULB applications and ultra-trace analyses is limited. For these reasons, a study has been performed to identify an effective way to remove surface contamination from polymers in an effort to provide improved instrumental detection limits. Inductively Coupled Plasma Mass Spectroscopy (ICP-MS) was utilized to assess the effectiveness of a variety of leachate solutions for removal of inorganic uranium and thorium surface contamination from polymers, specifically high density polyethylene (HDPE). HDPE leaching procedures were tested to optimize contaminant removal of thorium and uranium. Calibration curves for thorium and uranium ranged from 15 ppq (fg/mL) to 1 ppt (pg/mL). Detection limits were calculated at 6 ppq for uranium and 7 ppq for thorium. Results showed the most effective leaching reagent to be clean 6 M nitric acid for 72 hour exposures. Contamination levels for uranium and thorium found in the leachate solutions were significant for ultralow level radiation detection applications.

  18. Characterization of single photons using two-photon interference

    E-Print Network [OSTI]

    T. Legero; T. Wilk; A. Kuhn; G. Rempe

    2005-12-02

    Adiabatic passage techniques allow the generation of single photons which are very long compared to the typical detector time resolution. Therefore the detection time of a photon can be measured within the duration of the single-photon wavepacket. As a consequence, two-photon interference can be investigated in a time-resolved manner, i.e., the coincidence rate can be measured as a function of the time between photodetections. The theoretical analysis shows that this method not only gives information about the duration of single photons, but also about their coherence time. Here we discuss how to use this method for a spectral or temporal characterization of a single-photon source.

  19. Multi-Photon Interference and Temporal Distinguishability of Photons

    E-Print Network [OSTI]

    Z. Y. Ou

    2007-08-24

    A number of recent interference experiments involving multiple photons are reviewed. These experiments include generalized photon bunching effects, generalized Hong-Ou-Mandel interference effects and multi-photon interferometry for demonstrations of multi-photon de Broglie wavelength. The multi-photon states used in these experiments are from two pairs of photons in parametric down-conversion. We find that the size of the interference effect in these experiments, characterized by the visibility of interference pattern, is governed by the degree of distinguishability among different pairs of photons. Based on this discovery, we generalize the concept of multi-photon temporal distinguishability and relate it to a number of multi-photon interference effects. Finally, we make an attempt to interpret the coherence theory by the multi-photon interference via the concept of temporal distinguishability of photons.

  20. Liu UCD Phy9B 07 1 Ch 35. Interference

    E-Print Network [OSTI]

    Yoo, S. J. Ben

    Liu UCD Phy9B 07 1 Ch 35. Interference #12;Liu UCD Phy9B 07 2 35-1. Interference & Coherence #12;Liu UCD Phy9B 07 4 35-2. Two Source Interference of Light Thomas Young's experiment (1800... Spacing between adjacent maxima /minima: R/d (R>>d, R>>ym) #12;Liu UCD Phy9B 07 6 35-3. Intensity

  1. Software and Hardware Techniques for Mitigating the Multicore Interference Problem /

    E-Print Network [OSTI]

    Gupta, Anshuman

    2013-01-01

    resource sharing on datacenter applications. In ISCA,interference between live datacenter applications. In SC,data obtained from live datacenter applications using Google

  2. Multilevel interference lithography--fabricating sub-wavelength periodic nanostructures

    E-Print Network [OSTI]

    Chang, Chih-Hao, 1980-

    2008-01-01

    Periodic nanostructures have many exciting applications, including high-energy spectroscopy, patterned magnetic media, photonic crystals, and templates for self-assembly. Interference lithography (IL) is an attractive ...

  3. Long working-distance, incoherent light interference microscope...

    Office of Scientific and Technical Information (OSTI)

    has been developed to address the growing demand for new microsystem characterization tools. The design of the new microscope is similar to that of a Linnik interference...

  4. Atomic and nuclear interference phenomena and their applications 

    E-Print Network [OSTI]

    Kuznetsova, Yelena Anatolyevna

    2005-08-29

    In this work, interference and coherence phenomena, appearing in atomic and molecular ensembles interacting with coherent light sources, as electromagnetically induced transparency (EIT), coherent population trapping (CPT), ...

  5. Sandia Energy - Siting: Wind Turbine/Radar Interference Mitigation...

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

    Mitigation (TSPEAR & IFT&E) Home Stationary Power Energy Conversion Efficiency Wind Energy Siting and Barrier Mitigation Siting: Wind TurbineRadar Interference...

  6. Long working distance incoherent interference microscope

    DOE Patents [OSTI]

    Sinclair, Michael B. (Albuquerque, NM); De Boer, Maarten P. (Albuquerque, NM)

    2006-04-25

    A full-field imaging, long working distance, incoherent interference microscope suitable for three-dimensional imaging and metrology of MEMS devices and test structures on a standard microelectronics probe station. A long working distance greater than 10 mm allows standard probes or probe cards to be used. This enables nanometer-scale 3-dimensional height profiles of MEMS test structures to be acquired across an entire wafer while being actively probed, and, optionally, through a transparent window. An optically identical pair of sample and reference arm objectives is not required, which reduces the overall system cost, and also the cost and time required to change sample magnifications. Using a LED source, high magnification (e.g., 50.times.) can be obtained having excellent image quality, straight fringes, and high fringe contrast.

  7. Compound transfer matrices: Constructive and destructive interference

    E-Print Network [OSTI]

    Boonserm, Petarapa

    2011-01-01

    Scattering from a compound barrier, one composed of a number of distinct non-overlapping sub-barriers, has a number of interesting and subtle mathematical features. If one is scattering classical particles, where the wave aspects of the particle can be ignored, the transmission probability of the compound barrier is simply given by the product of the transmission probabilities of the individual sub-barriers. In contrast if one is scattering waves (whether we are dealing with either purely classical waves or quantum Schrodinger wavefunctions) each sub-barrier contributes phase information (as well as a transmission probability), and these phases can lead to either constructive or destructive interference, with the transmission probability oscillating between nontrivial upper and lower bounds. In this article we shall study these upper and lower bounds in some detail, and also derive bounds on the closely related process of quantum excitation (particle production) via parametric resonance.

  8. SST Sample Characterization Analysis of Archive Samples 102-C, 105-C, and 106-C

    SciTech Connect (OSTI)

    Hara, F. T.; Kaye, J. H.; Steele, R. T.; Stromatt, R. W.; Thomas, D. L.; Urie, M. W.

    1990-04-01

    A substantial effort is planned to be initiated at the Hanford Site regarding the characterization of 149 single-shell tanks (SSTs) containing the byproducts of reprocessing during the 1950s and 1960s. Sampling and analysis, in distinct phases, are planned to involve laboratory investigations to determine both chemical and radionuclide inventories, so that waste disposal decisions can be developed. During 1989, trial analyses were performed on four archived samples from SSTs at the Pacific Northwest Laboratory using established U.S. Environmental Protection Agency (EPA) protocols and radiochemical procedures. The analysis of the archived SST waste material provides three important types of data for use in planning Phase I-A and Phase 1-B sample analysis. The types of data served as input to I) fi na 1 i zing the waste samp 1 e analysis procedures and methods and identify where procedure developmen~ may be needed, 2) evaluating the impact of normal paraffin hydrocarbon (NPH) lubricant {used in field sampling) on extracting inorganics or radionuclides from the SST sample, and 3) identifying trends in amounts of occupational radiation exposure expected from performing the various analysis procedures. Overall, the results are qualitative in nature, and the conclusions given are to be used with appropriate respect for the limitations of small amounts of data from four samples used in development processes. The results of the Phase I-A and I-B sample analysis will provide essential data for method performance for use in finalizing Phase I-C planning and methods development scope. Section 2.0, Inorganic Analysis, encompasses sample preparation, sample analysis, identification of methods performance limitations, and possible alternatives. Performance of the inorganic analytical methods was evaluated and changes were made to some of the procedures. In some cases, inductively coupled plasma-atomic emission spectroscopy (referred to in this report as ICP) did not provide the levels of accuracy and precision usually required for EPA work due to interference by other elements. In these cases, other methods are suggested as appropriate for trial as alternatives. In all cases, duplicates, spikes, and blanks were used to establish performance of the methods for the specific waste matrix. Results focused on problems in using the methods tested on the samples, the suitability of the ICP method of determining EP Toxicity metal ions and 22 EPA pollutant metal ions, and the suitability of cold vapor atomic absorption (CVAA) for mercury determinations. Problems areas identified are ICP spectral corrections, poor reproducibility from water leach and EP Toxicity methods, and adjustments needed for mercury analysis by CVAA. Section 3.0, Organics Analysis, details two screening procedures [total organic carbon (TOC) and gas chromatography (GC)], extraction procedures and related problems, surrogate spiking to test extraction efficiencies and matrix effects, and semivolatile organics via GC/mass spectroscopy (MS). The results show that the GC/MS is vulnerable to fouling and overload and that a combination of dilution and perhaps acidification are required to provide acceptable results. NPH and silicone-based lubricants from the sampling process impact the semivolatile analysis; however, with some modification the semivolatile method based on EPA SOW 288 can be used. Section 4.0, Radionuclide Analysis, evaluates procedures used to measure the radionuclides that might be found in the SST tank waste samples and establishes the level of accuracy and precision that can be expected. These data reveal that additional procedure development is needed in order to measure all of the radionuclides listed in Table 4-14 of the Waste Characterization Plan. In addition, the archive samples analyzed may not be representative of the tank population and considerable adaptation of the radiochemical procedures may be necessary to perform the desired measurements. NPH tests were conducted to determine whether the NPH from the field sampling process extracted significan

  9. Interference Mitigation in Femtocell Network Using Anonymous Author(s)

    E-Print Network [OSTI]

    Freitas, Nando de

    the power adaptation process of the FUEs and MUE to be a discrete multi agent Markov decision problem 050 051 052 053 Interference Mitigation in Femtocell Network Using Q-learning Anonymous Author problems is the so-called co-tier and cross-tier interference caused by the new femtocell network layer

  10. Revenue Management for Cognitive Spectrum Underlay Networks: An Interference Elasticity

    E-Print Network [OSTI]

    Huang, Jianwei

    to the large body of work on uplink power control with pricing for CDMA networks (e.g., [5]­[10] and a recent a total received interference power constraint at the primary user's receiver. The transmission power1 Revenue Management for Cognitive Spectrum Underlay Networks: An Interference Elasticity

  11. Optimal Energy-Bandwidth Allocation for Energy Harvesting Interference Networks

    E-Print Network [OSTI]

    Fisher, Kathleen

    Optimal Energy-Bandwidth Allocation for Energy Harvesting Interference Networks Zhe Wang, Vaneet@research.att.com Abstract--We develop optimal energy-bandwidth allocation algorithm for the energy harvesting transmitters in interference networks. We assume that both the channel gain and the harvested energy are known for K slots

  12. Power line carrier interference from HVDC converter terminals

    SciTech Connect (OSTI)

    Tatro, P.J.; Adamson, K.A. (New England Power Service Co., Westborough, MA (United States)); Eitzmann, M.A.; Smead, M. (GE Industrial and Power Systems, Schenectady, NY (United States). Power Systems Engineering Dept.)

    1993-07-01

    Power line carrier (PLC) equipment typically operates in the frequency range from 25 kHz to 300 kHz. Interference studies for HVDC converters usually concentrate on interference from noise sources within this frequency range. However, operating experience at the Sandy Pond converter terminal has indicated that PLC equipment is also susceptible to interference from sources of power system harmonics below the PLC frequency range. Extensive field testing and analytical studies have shown that each PLC circuit has a resonant frequency below the operating frequency. If excited at this resonant frequency, high voltages may exist within the PLC circuit. The resulting saturation of PLC components leads to local generation of radio frequency (RF) noise that interferes with proper operation of PLC circuits. Sources of power system harmonics in the 3-10 kHz range, such as line commutated dc converters, are potential sources of this type of interference.

  13. Analysis and design of interference-limited wireless systems

    E-Print Network [OSTI]

    Stamatiou, Konstantinos

    2009-01-01

    in Electrical Engineering (Communication Theory and Systems)in Electrical Engineering (Communication Theory and Systems)MSc, Electrical Engineering (Communication Theory & Systems)

  14. Performance analysis of interference suppression techniques for multiple antenna systems

    E-Print Network [OSTI]

    Amihood, Patrick

    2007-01-01

    in Electrical Engineering (Communication Theory and Systems)in Electrical Engineering (Communication Theory and Systems)USA M.S. , Electrical Engineering (Communication Theory and

  15. Analysis and design of interference-limited wireless systems

    E-Print Network [OSTI]

    Stamatiou, Konstantinos

    2009-01-01

    Figure 2.11: Outage probability vs. load for the three di?A. Conti, and O. Andrisano, “Outage evaluation for slowad hoc networks with outage constraints,” IEEE Trans. Inf.

  16. Correlated Interference Analysis in CDMA MultiAntenna Systems \\Lambda

    E-Print Network [OSTI]

    Yanikomeroglu, Halim

    ­mail: halim@sce.carleton.ca 2 Dept. of Electrical and Computer Engineering -- University of Toronto, Canada E antenna elements (AE's) are connected to a central station (CS) with separate feeders. All of the intelligence is centralized at the CS; thus, there is no signal­specific processing at the AE's. In the reverse

  17. Available instrumentation: Instrument Model/features Analysis

    E-Print Network [OSTI]

    Eberhard, Marc O.

    Available instrumentation: Instrument Model/features Analysis ICP-MS Perkin Elmer ELAN-DRCe with optional front-end Perkin Elmer series 200 HPLC. Available DRC gases include NH3 and O2. Virtually any element, notably metals. The instrument is equipped with a dedicated HPLC that allows differentiation

  18. Interference-induced splitting of resonances in spontaneous emission

    E-Print Network [OSTI]

    R. Arun

    2007-10-06

    We study the resonance fluorescence from a coherently driven four-level atom in the Y-type configuration. The effects of quantum interference induced by spontaneous emission on the fluorescence properties of the atom are investigated. It is found that the quantum interference resulting from cascade emission decays of the atom leads to a splitting of resonances in the excited level populations calculated as a function of light detuning. For some parameters, interference assisted enhancement of inner sidebands and narrowing of central peaks may also occur in the fluorescence spectrum. We present a physical understandingof our numerical results using the dressed state description of the atom-light interaction.

  19. ICP-PECVD PRODUCTION TOOL FOR INDUSTRIAL AlOX AND Si-BASED PASSIVATION LAYERS B.F.P. Roos1

    E-Print Network [OSTI]

    TECHNOLOGIES AG, Hanauer Landstrasse 103, D-63796 Kahl am Main, Germany 2 Institute for Solar Energy ResearchICP-PECVD PRODUCTION TOOL FOR INDUSTRIAL AlOX AND Si-BASED PASSIVATION LAYERS B.F.P. Roos1 , T Hamelin (ISFH), Am Ohrberg 1, D-31860 Emmerthal, Germany Correspondent author: bjoern

  20. REPORT OF THE INDUCTIVELY COUPLED PLASMA -MASS SPECTROMETRY (ICP-MS)

    E-Print Network [OSTI]

    through varied research and the analysis of samples from industry, particularly from the environmental) (Fig. 8) 1 Autosampler (Fig. 10) 1 Flow Injector (Fig, 9) 1 Peristaltic Pump #12;-3- CLEAN LABORATORY

  1. Nonclassical effects in two-photon interference experiments: event-by-event simulations

    E-Print Network [OSTI]

    -photon interference experiments with two independent sources, like the Hanbury Brown-Twiss experiment: Interference, Hanbury Brown-Twiss experiment, Ghosh-Mandel experiment, quantum theory, discrete

  2. Is There Still Time to Avoid `Dangerous Anthropogenic Interference' with Global Climate?*#

    E-Print Network [OSTI]

    Hansen, James E.

    Is There Still Time to Avoid `Dangerous Anthropogenic Interference' with Global Climate on humans and wildlife, and constitute "dangerous anthropogenic interference" with nature. The Earth

  3. Effect of Nanoparticle Conjugation on Gene Silencing by RNA Interference

    E-Print Network [OSTI]

    Singh, Neetu

    RNA interference (RNAi) is a cellular process whereby the silencing of a particular gene is mediated by short RNAs (siRNAs). Although siRNAs have great therapeutic potential, cellular delivery has been a challenge. ...

  4. Quantum interference as a resource for quantum speedup

    E-Print Network [OSTI]

    Dan Stahlke

    2014-08-01

    Quantum states can in a sense be thought of as generalizations of classical probability distributions, but are more powerful than probability distributions when used for computation or communication. Quantum speedup therefore requires some feature of quantum states that classical probability distributions lack. One such feature is interference. We quantify interference and show that there can be no quantum speedup due to a small number of operations incapable of generating large amounts of interference (although large numbers of such operations can in fact lead to quantum speedup). Low-interference operations include sparse unitaries, Grover reflections, short time/low energy Hamiltonian evolutions, and the Haar wavelet transform. Circuits built from such operations can be classically simulated via a Monte Carlo technique making use of a convex combination of two Markov chains. Applications to query complexity, communication complexity, and the Wigner representation are discussed.

  5. On the Capacity of Cognitive Relay assisted Gaussian Interference Channel

    E-Print Network [OSTI]

    Jafar, Syed A.

    On the Capacity of Cognitive Relay assisted Gaussian Interference Channel Sriram Sridharan, Sriram: srid- hara@ece.utexas.edu; sriram@ece.utexas.edu). S. Sridharan and S. Vish- wanath are supported

  6. On the Capacity of Vector Gaussian Interference Channels Sriram Vishwanath

    E-Print Network [OSTI]

    Jafar, Syed A.

    On the Capacity of Vector Gaussian Interference Channels Sriram Vishwanath Electrical and Computer Engineering Univ. of Texas at Austin, Austin, TX 78712 e-mail: sriram@ece.utexas.edu Syed Ali Jafar Electrical

  7. Interference in Exclusive Vector Meson Production in Heavy Ion Collisions

    E-Print Network [OSTI]

    Spencer R. Klein; Joakim Nystrand

    1999-09-03

    Photons emitted from the electromagnetic fields of relativistic heavy ions can fluctuate into quark anti-quark pairs and scatter from a target nucleus, emerging as vector mesons. These coherent interactions are identifiable by final states consisting of the two nuclei and a vector meson with a small transverse momentum. The emitters and targets can switch roles, and the two possibilities are indistinguishable, so interference may occur. Vector mesons are negative parity so the amplitudes have opposite signs. When the meson transverse wavelength is larger than the impact parameter, the interference is large and destructive. The short-lived vector mesons decay before amplitudes from the two sources can overlap, and so cannot interfere directly. However, the decay products are emitted in an entangled state, and the interference depends on observing the complete final state. The non-local wave function is an example of the Einstein-Podolsky-Rosen paradox.

  8. Quantum interference within the complex quantum Hamilton-Jacobi formalism

    E-Print Network [OSTI]

    Chia-Chun Chou; Angel S. Sanz; Salvador Miret-Artes; Robert E. Wyatt

    2010-05-26

    Quantum interference is investigated within the complex quantum Hamilton-Jacobi formalism. As shown in a previous work [Phys. Rev. Lett. 102, 250401 (2009)], complex quantum trajectories display helical wrapping around stagnation tubes and hyperbolic deflection near vortical tubes, these structures being prominent features of quantum caves in space-time Argand plots. Here, we further analyze the divergence and vorticity of the quantum momentum function along streamlines near poles, showing the intricacy of the complex dynamics. Nevertheless, despite this behavior, we show that the appearance of the well-known interference features (on the real axis) can be easily understood in terms of the rotation of the nodal line in the complex plane. This offers a unified description of interference as well as an elegant and practical method to compute the lifetime for interference features, defined in terms of the average wrapping time, i.e., considering such features as a resonant process.

  9. Interference management techniques in large-scale wireless networks 

    E-Print Network [OSTI]

    Luo, Yi

    2015-06-29

    In this thesis, advanced interference management techniques are designed and evaluated for large-scale wireless networks with realistic assumptions, such as signal propagation loss, random node distribution and ...

  10. Discovery and biochemical characterization of RNA interference in budding yeast

    E-Print Network [OSTI]

    Weinberg, David E. (David Eric)

    2013-01-01

    RNA interference (RNAi) is a eukaryotic pathway for the post-transcriptional regulation of gene expression. In the simplest form of RNAi, a double-stranded RNA (dsRNA) trigger is converted into small-RNA duplexes by the ...

  11. Electromagnetic Interference (EMI) Resisting Analog Integrated Circuit Design Tutorial 

    E-Print Network [OSTI]

    Yu, Jingjing

    2012-10-19

    INTERFERENCE (EMI) RESISTING ANALOG INTEGRATED CIRCUIT DESIGN TUTORIAL A Thesis by JINGJING YU Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... August 2012 Major Subject: Electrical Engineering ELECTROMAGNETIC INTERFERENCE (EMI) RESISTING ANALOG INTEGRATED CIRCUIT DESIGN TUTORIAL A Thesis by JINGJING YU Submitted to the Office of Graduate Studies of Texas A&M University...

  12. INTERFERENCE FRINGES OF SOLAR ACOUSTIC WAVES AROUND SUNSPOTS

    SciTech Connect (OSTI)

    Chou, Dean-Yi; Zhao Hui; Yang, Ming-Hsu; Liang, Zhi-Chao

    2012-10-20

    Solar acoustic waves are scattered by a sunspot due to the interaction between the acoustic waves and the sunspot. The sunspot, excited by the incident wave, generates the scattered wave. The scattered wave is added to the incident wave to form the total wave around the sunspot. The interference fringes between the scattered wave and the incident wave are visible in the intensity of the total wave because the coherent time of the incident wave is of the order of a wave period. The strength of the interference fringes anti-correlates with the width of temporal spectra of the incident wave. The separation between neighboring fringes increases with the incident wavelength and the sunspot size. The strength of the fringes increases with the radial order n of the incident wave from n = 0 to n = 2, and then decreases from n = 2 to n = 5. The interference fringes play a role analogous to holograms in optics. This study suggests the feasibility of using the interference fringes to reconstruct the scattered wavefields of the sunspot, although the quality of the reconstructed wavefields is sensitive to the noise and errors in the interference fringes.

  13. The production of ultra-high purity single isotopes or tailored isotope mixtures by ICP-MS

    SciTech Connect (OSTI)

    Liezers, Martin; Farmer, Orville T.; Dion, Michael P.; Thomas, Linda MP; Eiden, Gregory C.

    2015-01-01

    We report the development and testing of a simple collector arrangement for a commercial quadrupole ICP-MS that for the first time has been used to produce small quantities of highly enriched (>99.99%) single isotopes, with deposition rates >10 ng/hour. The collector assembly replaces the standard instrument detector allowing for implantation with simultaneous monitoring of the incident ion current. Even under zero bias implant conditions, low energy (<10 eV), ion collection efficiency was observed to be very high ~99%. 151Eu ion currents of 0.1-0.5 nA were collected on a simple, planar foil without resorting to any type of cup configuration. Recovery of the enriched isotope from such foils is much simpler than from a more complex cup configuration. High rejection of adjacent mass isotopes was demonstrated by selectively implanting 167Er without any discernible co-implantation of 166Er and 168Er. The important analytical possibilities of the new approach to isotope ratio measurement, tracer purification and radiation measurements are discussed.

  14. Quantum interferences reconstruction with low homodyne detection efficiency

    E-Print Network [OSTI]

    Esposito, M; Titimbo, K; Zimmermann, K; Kourousias, G; Curri, A; Floreanini, R; Parmigiani, F; Fausti, D; Benatti, F

    2015-01-01

    Standard quantum state reconstruction techniques indicate that a detection efficiency of $0.5$ is an absolute threshold below which quantum interferences cannot be measured. However, alternative statistical techniques suggest that this threshold can be overcome at the price of increasing the statistics used for the reconstruction. In the following we present numerical experiments proving that quantum interferences can be measured even with a detection efficiency smaller than $0.5$. At the same time we provide a guideline for handling the tomographic reconstruction of quantum states based on homodyne data collected by low efficiency detectors.

  15. Cavity-output-field control via interference effects

    E-Print Network [OSTI]

    Viorel Ciornea; Mihai A. Macovei

    2014-10-25

    We show how interference effects are responsible for manipulating the output electromagnetic field of an optical micro-resonator in the good-cavity limit. The system of interest consists in a moderately strongly pumped two-level emitter embedded in the optical cavity. When an additional weaker laser of the same frequency is pumping the combined system through one of the resonator's mirrors then the output cavity electromagnetic field can be almost completely suppressed or enhanced. This is due to the interference among the scattered light by the strongly pumped atom into the cavity mode and the incident weaker laser field. The result applies to photonic crystal environments as well.

  16. Ramsey Interference in a Multi-level Quantum System

    E-Print Network [OSTI]

    J. P. Lee; A. J. Bennett; J. Skiba-Szymanska; D. J. P. Ellis; I. Farrer; D. A. Ritchie; A. J. Shields

    2015-08-24

    We report Ramsey interference in the excitonic population of a negatively charged quantum dot revealing the coherence of the state in the limit where radiative decay is dominant. Our experiments show that the decay time of the Ramsey interference is limited by the spectral width of the transition. Applying a vertical magnetic field induces Zeeman split transitions that can be addressed by changing the laser detuning to reveal 2, 3 and 4 level system behaviour. We show that under finite field the phase-sensitive control of two optical pulses from a single laser can be used to prepare both population and spin qubits simultaneously.

  17. Experimental and theoretical study of propeller spinner/shank interference 

    E-Print Network [OSTI]

    Cornell, Carl Clayton

    1986-01-01

    of a spinner with four round (18) stub blade shanks attached. The shank length was established to duplicate that of a typical unfaired blade shank. From Reid's data Borst , ' deduced a drag interference loss of C = 0. 517 which (19, 20) D... in the form of: 2 2 0 = ~ = 0. 8(t/c) - 0. 0003 D qc C (III-5) C = ~ 0. 75(t/c) ? 0 0003(t/c) 2 D ~qt (III-6) 22 Sarsfeld postulated that the change in efficiency can be represented by a ratio of interference drag to thrust produced by the propeller...

  18. Radio Frequency Interference Validation Testing for LAAS using the

    E-Print Network [OSTI]

    Stanford University

    of a LAAS Ground Facility (LGF) that is composed of various monitors to detect possible hazardous anomalies Controller (AGC) outputs from the IMT receivers are sensitive to interference but are not sensitive to other types of failures. In addition to being more sensitive to changes in RFI, they provide a useful metric

  19. N-slit interference: Path integrals, Bohmian trajectories

    E-Print Network [OSTI]

    Valeriy I Sbitnev

    2010-01-25

    Path integrals give a possibility to compute in details routes of particles from particle sources through slit gratings and further to detectors. The path integral for a particle passing through the Gaussian slit results in the Gaussian wavepacket. The wavepackets prepared on N slits and superposed together give rise to interference pattern in the near-field zone. It transforms to diffraction in the far-field zone represented by divergent principal rays, at that all rays are partitioned from each other by (N-2) subsidiary rays. The Bohmian trajectories in the near-field zone of N-slit gratings show wavy behavior. And they become straight in the far-field zone. The trajectories show zigzag behavior on the interference Talbot carpet (ratio of particle wavelength to a distance between slits are much smaller than 1 and N>>1). Interference from the the N-slit gratings is simulated by scattering monochromatic neutrons (wavelength=0.5 nm). Also we have considered simulation of interference fringes arising at scattering on an N-slit grating of fullerene molecules (according to the real experiment stated in e-print 1001.0468).

  20. Interspecific Pheromone Plume Interference Among Sympatric Heliothine Moths: A Wind

    E-Print Network [OSTI]

    Interspecific Pheromone Plume Interference Among Sympatric Heliothine Moths: A Wind Tunnel Test for conspecific males in a wind tunnel, and then placed heterospecific females on either side of the original is a pest of tomatillo in Mexico, is Heliothis subflexa Guenée. All three of these moths share the same

  1. Interference in Cellular Networks: The Minimum Membership Set Cover Problem

    E-Print Network [OSTI]

    interference reduction by suitable assignment of transmission power levels to base stations. This task stations (hollow points) are assigned identical transmission power levels (dashed circles), client c, or mountains, and the base station transmis- sion power. Since due to legal or architectural constraints

  2. Low-Interference Topology Control for Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Li, Xiang-Yang

    wireless ad hoc networks. Many aspects of the networking will affect the energy consumption of the wireless may cause larger energy consumption. In wireless ad hoc networks, each wireless device can selectively1 Low-Interference Topology Control for Wireless Ad Hoc Networks Kousha Moaveni-Nejad, Xiang

  3. Multi-band OFDM UWB receiver with narrowband interference suppression 

    E-Print Network [OSTI]

    Kelleci, Burak

    2009-05-15

    removing the interference in digital domain requires higher dynamic range of analog front-end than removing it in analog domain, a programmable analog notch filter is used to relax the receiver requirements in the presence of NBI. The baseband filter...

  4. Asymptotic Interference Alignment for Exact Repair in Distributed Storage Systems

    E-Print Network [OSTI]

    Jafar, Syed A.

    Asymptotic Interference Alignment for Exact Repair in Distributed Storage Systems Viveck R. Cadambe consider a distributed storage system where a file of size M is stored in n distributed storage nodes using of this paper is to repair failed nodes in the storage system, by replacing them by their replicas (exact repair

  5. The word class effect in the pictureword interference paradigm

    E-Print Network [OSTI]

    Makous, Walter

    The word class effect in the picture­word interference paradigm Niels Janssen University of La of Trento, Trento, Italy Harvard University, Cambridge, MA, USA The word class effect in the picture­word for word class constraints on lexical selection. However, methodological concerns called for a replication

  6. Artificial Intersymbol Interference (ISI) to Exploit Receiver Imperfections for Secrecy

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Artificial Intersymbol Interference (ISI) to Exploit Receiver Imperfections for Secrecy Azadeh intentional intersymbol inter- ference (ISI). The legitimate receiver uses the key to cancel the ISI while the eavesdropper, since it does not have the key, cannot do such. It is shown that although ISI reduces

  7. Electromagnetic Interference (EMI) Shielding of Single-Walled Carbon

    E-Print Network [OSTI]

    Gao, Hongjun

    Electromagnetic Interference (EMI) Shielding of Single-Walled Carbon Nanotube Epoxy Composites Ning) shielding effectiveness (SE) of SWNTs. Our results indicate that SWNTs can be used as effective lightweight EMI shielding materials. Composites with greater than 20 dB shielding efficiency were obtained easily

  8. Testing During Study Insulates Against the Buildup of Proactive Interference

    E-Print Network [OSTI]

    Szpunar, Karl K.

    Testing During Study Insulates Against the Buildup of Proactive Interference Karl K. Szpunar in the benefits of retrieval practice on long-term retention--the testing effect--has spawned a considerable. Taking a test may benefit retention through both direct means (engaging appropriate retrieval processes

  9. RNA Interference: Endogenous siRNAs Derived from Transposable

    E-Print Network [OSTI]

    Jiggins, Francis

    RNA Interference: Endogenous siRNAs Derived from Transposable Elements The Piwi-interacting RNARNAs are about 22 nt long, are derived from host-expressed fold-back structures, and associate primarily with Ago1 [5]. Conversely, antiviral siRNAs (viRNAs), are about 21 nt, are derived from double

  10. ICP Contract Modifications

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (JournalvivoHighHussein KhalilResearch &ENERGYWho shouldModifications to

  11. Comparison of Pulsed Sinusoid Radio Frequency Interference Detection Algorithms Using Time and

    E-Print Network [OSTI]

    Ruf, Christopher

    Comparison of Pulsed Sinusoid Radio Frequency Interference Detection Algorithms Using Time of two major Radio Frequency Interference (RFI) detection algorithms is compared. The peak detection algorithm and the kurtosis detection algorithm are characterized using the receiver operating characteristic

  12. A study on the effects of soft interference cancellation for uplink WCDMA system

    E-Print Network [OSTI]

    Qi, Tianren

    2011-01-01

    WCDMA system is an interference limited system. Interference cancellation (IC) is a technique that has been widely studied and implemented for WCDMA uplink system to achieve performance close to potential capacity. Most ...

  13. Quantum Interference in Cognition: Structural Aspects of the Brain

    E-Print Network [OSTI]

    Diederik Aerts; Sandro Sozzo

    2012-04-22

    We identify the presence of typically quantum effects, namely 'superposition' and 'interference', in what happens when human concepts are combined, and provide a quantum model in complex Hilbert space that represents faithfully experimental data measuring the situation of combining concepts. Our model shows how 'interference of concepts' explains the effects of underextension and overextension when two concepts combine to the disjunction of these two concepts. This result supports our earlier hypothesis that human thought has a superposed two-layered structure, one layer consisting of 'classical logical thought' and a superposed layer consisting of 'quantum conceptual thought'. Possible connections with recent findings of a 'grid-structure' for the brain are analyzed, and influences on the mind/brain relation, and consequences on applied disciplines, such as artificial intelligence and quantum computation, are considered.

  14. Characterization of LMS and DMR Beamformers in the Presence of Loud Periodic Interferers

    E-Print Network [OSTI]

    George Mason University

    Characterization of LMS and DMR Beamformers in the Presence of Loud Periodic Interferers Geoffrey C introduced loud impulsive periodic interferers into these systems. Standard LMS adaptive beamforming interference. 1. INTRODUCTION Adaptive Least Mean-Square (LMS) beamformers are efficient algorithms, providing

  15. Apparatus for eliminating background interference in fluorescence measurements

    DOE Patents [OSTI]

    Martin, J.C.; Jett, J.H.

    1986-03-04

    The disclosure is directed to an apparatus for eliminating background interference during fluorescence measurements in a multiple laser flow cytometer. A biological particle stained with fluorescent dyes is excited by a laser. A fluorescence detector detects the fluorescence. The particle scatters light and a gate signal is generated and delayed until the biological particle reaches the next laser. The delayed signal turns on this next laser, which excites a different stained component of the same biological particle. 8 figs.

  16. Cube-corner reflectors with interference dielectric coating

    SciTech Connect (OSTI)

    Sokolov, A L; Murashkin, V V; Akent'ev, A S; Karaseva, E A

    2013-09-30

    The cube-corner reflectors (CCRs) with a special interference dielectric coating intended for ring retroreflector systems of space vehicles with uniaxial orientation are considered. The diffraction patterns of radiation reflected from the CCRs with different face coatings are studied. It is shown that the choice of the angle between the faces, the size and the coating of CCR faces allow essential variation in the diffraction pattern, thereby providing its optimisation for solving different navigation problems. (nanogradient dielectric coatings and metamaterials)

  17. Unitary spin squeezing by interference-based quantum erasure

    E-Print Network [OSTI]

    Mingfeng Wang; Weizhi Qu; Pengxiong Li; Han Bao; Yanhong Xiao

    2015-02-06

    We propose an all-optical approach for quantum erasure. Unwanted atom-light entanglement in spin squeezing is removed by destructive interference of three successive atom-light interaction process, with only the desired atom-atom interaction left. This scheme allows implementation of unitary one-axis and two-axis twisting spin squeezing using coherent light and cold or warm atomic ensemble. Calculations show that substantial spin squeezing is attainable under moderate experiment conditions. This proposal provides a new angle in using light to efficiently create many-body entanglement state with simple setups, and thus is promising for advancing technologies in quantum metrology and quantum information procession.

  18. Stimulated emission of two photons in parametric amplification and its interpretation as multi-photon interference

    E-Print Network [OSTI]

    F. W. Sun; B. H. Liu; Y. X. Gong; Y. F. Huang; Z. Y. Ou; G. C. Guo

    2007-02-06

    Stimulated emission of two photons is observed experimentally in the parametric amplification process and is compared to a three-photon interference scheme. We find that the underlying physics of stimulated emission is simply the constructive interference due to photon indistinguishability. So the observed signal enhancement upon the input of photons is a result of multi-photon interference of the input photons and the otherwise spontaneously emitted photon from the amplifier.

  19. DEVELOPMENT OF RADIO FREQUENCY INTERFERENCE DETECTION ALGORITHMS FOR PASSIVE MICROWAVE REMOTE SENSING

    E-Print Network [OSTI]

    Ruf, Christopher

    DEVELOPMENT OF RADIO FREQUENCY INTERFERENCE DETECTION ALGORITHMS FOR PASSIVE MICROWAVE REMOTE Gross for pretty much building almost everything that this thesis is based on and Darren Mc

  20. Realization and modeling of rf superconducting quantum interference device metamaterials

    E-Print Network [OSTI]

    M. Trepanier; Daimeng Zhang; Oleg Mukhanov; Steven M. Anlage

    2013-10-28

    We have prepared meta-atoms based on radio frequency superconducting quantum interference devices (RF SQUIDs) and examined their tunability with dc magnetic field, rf current, and temperature. RF SQUIDs are superconducting split ring resonators in which the usual capacitance is supplemented with a Josephson junction, which introduces strong nonlinearity in the rf properties. We find excellent agreement between the data and a model which regards the Josephson junction as the resistively and capacitively-shunted junction. A magnetic field tunability of 80 THz/Gauss at 12 GHz is observed, a total tunability of 56$%$ is achieved, and a unique electromagnetically-induced transparency feature at intermediate excitation powers is demonstrated for the first time. An RF SQUID metamaterial is shown to have qualitatively the same behavior as a single RF SQUID with regards to DC flux and temperature tuning.

  1. Magnetoelectric transport and quantum interference effect in ultrathin manganite films

    SciTech Connect (OSTI)

    Wang, Cong; Jin, Kui-juan Gu, Lin; Lu, Hui-bin; Li, Shan-ming; Zhou, Wen-jia; Zhao, Rui-qiang; Guo, Hai-zhong; He, Meng; Yang, Guo-zhen

    2014-04-21

    The magnetoelectric transport behavior with respect to the thicknesses of ultrathin La{sub 0.9}Sr{sub 0.1}MnO{sub 3} films is investigated in detail. The metal-insulator phase transition, which has never been observed in bulk La{sub 0.9}Sr{sub 0.1}MnO{sub 3}, is found in ultrathin films with thicknesses larger than 6 unit cells. Low-temperature resistivity minima appeared in films with thicknesses less than 10 unit cells. This is attributed to the presence of quantum interference effects. These data suggest that the influence of the weak localization becomes much pronounced as the film thickness decreases from 16 to 8 unit cells.

  2. Radiofrequency amplifier based on a dc superconducting quantum interference device

    DOE Patents [OSTI]

    Hilbert, C.; Martinis, J.M.; Clarke, J.

    1984-04-27

    A low noise radiofrequency amplifer, using a dc SQUID (superconducting quantum interference device) as the input amplifying element. The dc SQUID and an input coil are maintained at superconductivity temperatures in a superconducting shield, with the input coil inductively coupled to the superconducting ring of the dc SQUID. A radiofrequency signal from outside the shield is applied to the input coil, and an amplified radiofrequency signal is developed across the dc SQUID ring and transmitted to exteriorly of the shield. A power gain of 19.5 +- 0.5 dB has been achieved with a noise temperature of 1.0 +- 0.4 K at a frequency of 100 MHz.

  3. Standard practice for analysis of aqueous leachates from nuclear waste materials using inductively coupled plasma-atomic emission spectrometry

    E-Print Network [OSTI]

    American Society for Testing and Materials. Philadelphia

    2010-01-01

    1.1 This practice is applicable to the determination of low concentration and trace elements in aqueous leachate solutions produced by the leaching of nuclear waste materials, using inductively coupled plasma-atomic emission spectroscopy (ICP-AES). 1.2 The nuclear waste material may be a simulated (non-radioactive) solid waste form or an actual solid radioactive waste material. 1.3 The leachate may be deionized water or any natural or simulated leachate solution containing less than 1 % total dissolved solids. 1.4 This practice should be used by analysts experienced in the use of ICP-AES, the interpretation of spectral and non-spectral interferences, and procedures for their correction. 1.5 No detailed operating instructions are provided because of differences among various makes and models of suitable ICP-AES instruments. Instead, the analyst shall follow the instructions provided by the manufacturer of the particular instrument. This test method does not address comparative accuracy of different devices...

  4. Femtosecond laser ablation-based mass spectrometry. An ideal tool for stoichiometric analysis of thin films

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

    LaHaye, Nicole L.; Kurian, Jose; Diwakar, Prasoon K.; Alff, Lambert; Harilal, Sivanandan S.

    2015-08-19

    An accurate and routinely available method for stoichiometric analysis of thin films is a desideratum of modern materials science where a material’s properties depend sensitively on elemental composition. We thoroughly investigated femtosecond laser ablation-inductively coupled plasma-mass spectrometry (fs-LA-ICP-MS) as an analytical technique for determination of the stoichiometry of thin films down to the nanometer scale. The use of femtosecond laser ablation allows for precise removal of material with high spatial and depth resolution that can be coupled to an ICP-MS to obtain elemental and isotopic information. We used molecular beam epitaxy-grown thin films of LaPd(x)Sb2 and T´-La2CuO4 to demonstrate themore »capacity of fs-LA-ICP-MS for stoichiometric analysis and the spatial and depth resolution of the technique. Here we demonstrate that the stoichiometric information of thin films with a thickness of ~10 nm or lower can be determined. Furthermore, our results indicate that fs-LA-ICP-MS provides precise information on the thin film-substrate interface and is able to detect the interdiffusion of cations.« less

  5. A SLIPPERY SLOPE: HOW MUCH GLOBAL WARMING CONSTITUTES "DANGEROUS ANTHROPOGENIC INTERFERENCE"?

    E-Print Network [OSTI]

    Hansen, James E.

    A SLIPPERY SLOPE: HOW MUCH GLOBAL WARMING CONSTITUTES "DANGEROUS ANTHROPOGENIC INTERFERENCE on the global warming that can be tolerated without risking dangerous anthropogenic interference with climate. I" mainly as a metaphor for the danger posed by global warming. So I changed "Hell" to "disaster." What

  6. CANCELING STRONG NARROWBAND MAIN-BEAM INTERFERENCE A. A. (Louis) Beex & James R. Zeidler

    E-Print Network [OSTI]

    Beex, A. A. "Louis"

    CANCELING STRONG NARROWBAND MAIN-BEAM INTERFERENCE A. A. (Louis) Beex & James R. Zeidler DSPRL a small adaptation stepsize. In that case, any interference arriving from the main beam look direction as well. The latter will be applied to the auxiliary beams and the main beam, or to the error signal

  7. INTERFERENCE ALIGNMENT USING REWEIGHTED NUCLEAR NORM MINIMIZATION Gokul Sridharan and Wei Yu

    E-Print Network [OSTI]

    Yu, Wei

    INTERFERENCE ALIGNMENT USING REWEIGHTED NUCLEAR NORM MINIMIZATION Gokul Sridharan and Wei Yu Edward by the nuclear norm. We further propose the use of an iterative reweighted nuclear norm approach and show, nuclear norm minimization, reweighting. 1. INTRODUCTION Since the landmark development of interference

  8. Dangerous Anthropogenic Interference* A Discussion of Humanity's Faustian Climate Bargain and the Payments Coming Due

    E-Print Network [OSTI]

    Hansen, James E.

    Dangerous Anthropogenic Interference* A Discussion of Humanity's Faustian Climate Bargain government official that I should not talk about "dangerous anthropogenic interference" with climate, because we do not know how much humans are changing the Earth's climate or how much change is "dangerous

  9. Radio Science, Volume ???, Number , Pages 15, Radio Frequency Interference Mitigation for Detection

    E-Print Network [OSTI]

    Ellingson, Steven W.

    Radio Science, Volume ???, Number , Pages 1­5, Radio Frequency Interference Mitigation for Detection of Extended Sources with an Interferometer Geoffrey C. Bower Radio Astronomy Laboratory, UC Berkeley, Berkeley, CA 94720, USA Radio frequency interference (RFI) is a significant problem for current

  10. Radio self-interference cancellation by transmit beamforming, all-analog cancellation and blind digital tuning$

    E-Print Network [OSTI]

    Hua, Yingbo

    Radio self-interference cancellation by transmit beamforming, all-analog cancellation and blind September 2014 Accepted 17 September 2014 Available online 28 September 2014 Keywords: Radio self-interference cancellation Full-duplex radio Transmit beamforming Receive beamforming All-analog cancellation Blind digital

  11. miR-143 Interferes with ERK5 Signaling, and Abrogates Prostate Cancer Progression in Mice

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    miR-143 Interferes with ERK5 Signaling, and Abrogates Prostate Cancer Progression in Mice Cyrielle-regulated kinase-5 (ERK5) activity. We show here that ERK5 is a miR-143 target in prostate cancer. Conclusions: mi, Apparailly F, Fernandez PL, et al. (2009) miR-143 Interferes with ERK5 Signaling, and Abrogates Prostate

  12. An Experimental Investigation on the Wake Interference of Wind Turbines Sited Over Complex Terrains

    E-Print Network [OSTI]

    Hu, Hui

    1 An Experimental Investigation on the Wake Interference of Wind Turbines Sited Over Complex, 50011 An experimental study was conducted to investigate the interferences of wind turbines sited over conducted in a large wind tunnel with of wind turbine models sited over a flat terrain (baseline case

  13. Mitigating Interference between IEEE 802.16 Systems Operating in License-exempt Mode

    E-Print Network [OSTI]

    Murphy, Liam

    Mitigating Interference between IEEE 802.16 Systems Operating in License-exempt Mode Omar Ashagi approach to mitigate interference issues in license-exempt 802.16 systems is presented. This approach can be divided into two mode of operation: licensed mode of operation, and license-exempt mode

  14. The word class effect in the pictureword interference paradigm Niels Janssen,

    E-Print Network [OSTI]

    Caramazza, Alfonso

    The word class effect in the picture­word interference paradigm Niels Janssen, University of La of Trento, Trento, Italy Harvard University, Cambridge, MA, USA Abstract The word class effect in the picture­word interference paradigm is a highly influential finding that has provided some of the most

  15. Combined Use of Magnetic and Electrically Conductive Fillers in a Polymer Matrix for Electromagnetic Interference Shielding

    E-Print Network [OSTI]

    Chung, Deborah D.L.

    for Electromagnetic Interference Shielding JUNHUA WU1,2 and D.D.L. CHUNG1,3 1.--Composite Materials Research for electromagnetic interference shielding than the use of a highly magnetic filler alone or the use of a highly electrical resistivity below 10 X cm, as provided by conductive fillers, which contribute to shielding

  16. Event-based simulation of interference with alternatingly blocked particle sources

    E-Print Network [OSTI]

    K. Michielsen; S. Mohanty; L. Arnold; H. De Raedt

    2011-12-12

    We analyze the predictions of an event-based corpuscular model for interference in the case of two-beam interference experiments in which the two sources are alternatingly blocked. We show that such experiments may be used to test specific predictions of the corpuscular model.

  17. Fabrication of moth-eye structures on silicon by direct six-beam laser interference lithography

    SciTech Connect (OSTI)

    Xu, Jia; Zhang, Ziang; Weng, Zhankun; Wang, Zuobin Wang, Dapeng

    2014-05-28

    This paper presents a new method for the generation of cross-scale laser interference patterns and the fabrication of moth-eye structures on silicon. In the method, moth-eye structures were produced on a surface of silicon wafer using direct six-beam laser interference lithography to improve the antireflection performance of the material surface. The periodic dot arrays of the moth-eye structures were formed due to the ablation of the irradiance distribution of interference patterns on the wafer surface. The shape, size, and distribution of the moth-eye structures can be adjusted by controlling the wavelength, incidence angles, and exposure doses in a direct six-beam laser interference lithography setup. The theoretical and experimental results have shown that direct six-beam laser interference lithography can provide a way to fabricate cross-scale moth-eye structures for antireflection applications.

  18. Low-energy fusion caused by an interference

    E-Print Network [OSTI]

    B. Ivlev

    2012-11-30

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

  19. Aharonov-Bohm interferences from local deformations in graphene

    E-Print Network [OSTI]

    Fernando de Juan; Alberto Cortijo; María A. H. Vozmediano; Andrés Cano

    2011-05-04

    One of the most interesting aspects of graphene is the tied relation between structural and electronic properties. The observation of ripples in the graphene samples both free standing and on a substrate has given rise to a very active investigation around the membrane-like properties of graphene and the origin of the ripples remains as one of the most interesting open problems in the system. The interplay of structural and electronic properties is successfully described by the modelling of curvature and elastic deformations by fictitious gauge fields that have become an ex- perimental reality after the suggestion that Landau levels can form associated to strain in graphene and the subsequent experimental confirmation. Here we propose a device to detect microstresses in graphene based on a scanning-tunneling-microscopy setup able to measure Aharonov-Bohm inter- ferences at the nanometer scale. The interferences to be observed in the local density of states are created by the fictitious magnetic field associated to elastic deformations of the sample.

  20. Probing the antisymmetric Fano interference assisted by a Majorana fermion

    SciTech Connect (OSTI)

    Dessotti, F. A.; Ricco, L. S.; Souza, M. de; Souza, F. M.; Seridonio, A. C.

    2014-11-07

    As the Fano effect is an interference phenomenon where tunneling paths compete for the electronic transport, it becomes a probe to catch fingerprints of Majorana fermions lying on condensed matter systems. In this work, we benefit of this mechanism by proposing as a route for that an Aharonov-Bohm-like interferometer composed by two quantum dots, being one of them coupled to a Majorana bound state, which is attached to one of the edges of a semi-infinite Kitaev wire within the topological phase. By changing the Fermi energy of the leads and the symmetric detuning of the levels for the dots, we show that opposing Fano regimes result in a transmittance characterized by distinct conducting and insulating regions, which are fingerprints of an isolated Majorana quasiparticle. Furthermore, we show that the maximum fluctuation of the transmittance as a function of the detuning is half for a semi-infinite wire, while it corresponds to the unity for a finite system. The setup proposed here constitutes an alternative experimental tool to detect Majorana excitations.

  1. Method of managing interference during delay recovery on a train system

    DOE Patents [OSTI]

    Gordon, Susanna P.; Evans, John A.

    2005-12-27

    The present invention provides methods for preventing low train voltages and managing interference, thereby improving the efficiency, reliability, and passenger comfort associated with commuter trains. An algorithm implementing neural network technology is used to predict low voltages before they occur. Once voltages are predicted, then multiple trains can be controlled to prevent low voltage events. Further, algorithms for managing inference are presented in the present invention. Different types of interference problems are addressed in the present invention such as "Interference During Acceleration", "Interference Near Station Stops", and "Interference During Delay Recovery." Managing such interference avoids unnecessary brake/acceleration cycles during acceleration, immediately before station stops, and after substantial delays. Algorithms are demonstrated to avoid oscillatory brake/acceleration cycles due to interference and to smooth the trajectories of closely following trains. This is achieved by maintaining sufficient following distances to avoid unnecessary braking/accelerating. These methods generate smooth train trajectories, making for a more comfortable ride, and improve train motor reliability by avoiding unnecessary mode-changes between propulsion and braking. These algorithms can also have a favorable impact on traction power system requirements and energy consumption.

  2. Interference Mitigation in IEEE 802.15.4 Networks Jin-Seok Han, Hyung-Sin Kim, Jae-Seok Bang and Yong-Hwan Lee

    E-Print Network [OSTI]

    Bahk, Saewoong

    importance. To alleviate the interference problem, ZigBee alliance has proposed an interference avoidance scheme [10]. The coordi- nator of ZigBee network detects the presence of interference by measuring

  3. Standard test method for determination of impurities in plutonium: acid dissolution, ion exchange matrix separation, and inductively coupled plasma-atomic emission spectroscopic (ICP/AES) analysis

    E-Print Network [OSTI]

    American Society for Testing and Materials. Philadelphia

    2003-01-01

    1.1 This specification covers blended uranium trioxide (UO3), U3O8, or mixtures of the two, powders that are intended for conversion into a sinterable uranium dioxide (UO2) powder by means of a direct reduction process. The UO2 powder product of the reduction process must meet the requirements of Specification C 753 and be suitable for subsequent UO2 pellet fabrication by pressing and sintering methods. This specification applies to uranium oxides with a 235U enrichment less than 5 %. 1.2 This specification includes chemical, physical, and test method requirements for uranium oxide powders as they relate to the suitability of the powder for storage, transportation, and direct reduction to UO2 powder. This specification is applicable to uranium oxide powders for such use from any source. 1.3 The scope of this specification does not comprehensively cover all provisions for preventing criticality accidents, for health and safety, or for shipping. Observance of this specification does not relieve the user of th...

  4. Use of Electrodeposition for Sample Preparation and Rejection Rate Prediction for Assay of Electroformed Ultra High Purity Copper for 232Th and 238U Prior to Inductively Coupled Plasma Mass Spectrometry (ICP/MS)

    SciTech Connect (OSTI)

    Hoppe, Eric W.; Aalseth, Craig E.; Brodzinski, Ronald L.; Day, Anthony R.; Farmer, Orville T.; Hossbach, Todd W.; McIntyre, Justin I.; Miley, Harry S.; Mintzer, Esther E.; Seifert, Allen; Smart, John E.; Warren, Glen A.

    2008-07-01

    The search for neutrinoless double beta decay in 76Ge has driven the need for ultra-low background Ge detectors shielded by electroformed copper of ultra-high radiopurity (<0.1µBq/kg). Although electrodeposition processes are almost sophisticated enough to produce copper of this purity, to date there are no methods sensitive enough to assay it. Inductively-coupled plasma mass spectrometry (ICP/MS) can detect thorium and uranium at femtogram levels, but in the past, this assay has been hindered by high copper concentrations in the sample. Electrodeposition of copper samples removes copper from the solution while selectively concentrating thorium and uranium contaminants to be assayed by ICP/MS. Spiking 232Th and 238U into the plating bath simulates low purity copper and allows for the calculation of the electrochemical rejection rate of thorium and uranium in the electroplating system. This rejection value will help to model plating bath chemistry.

  5. Ramsey Fringes and Time-domain Multiple-Slit Interference from Vacuum

    E-Print Network [OSTI]

    Eric Akkermans; Gerald V. Dunne

    2011-09-15

    Sequences of alternating-sign time-dependent electric field pulses lead to coherent interference effects in Schwinger vacuum pair production, producing a Ramsey interferometer, an all-optical time-domain realization of the multiple-slit interference effect, directly from the quantum vacuum. The interference, obeying fermionic quantum statistics, is manifest in the momentum dependence of the number of produced electrons and positrons along the linearly polarized electric field. The central value grows like $N^2$ for $N$ pulses [i.e., $N$ "slits"], and the functional form is well-described by a coherent multiple-slit expression. This behavior is generic for many driven quantum systems.

  6. Measurement of radiation coherence by means of interference visibility in the reflected light

    E-Print Network [OSTI]

    Tikhonov, E A

    2015-01-01

    Proposed, justified and tested measuring of beam spatial coherence, based on the detection of an interference visibility of the equal to intensity of beam replicas emerging under reflection from the rotated plane-parallel plate. The method consists in measuring the interference contrast at the simultaneous change of the longitudinal path difference and transverse shift of named replicas. Accurate measurement of the angle of rotated plate and the amplitude distribution of interferential minimaxes allows to determine the width of the beam spatial coherence. Spatial coherence of some types of multimode lasers has been measured by the method. Keywords: coherence measurements, interference in 2 move apart beam, rotable interferometer

  7. Nanoscale transport of phonons: Dimensionality, subdiffusion, molecular damping, and interference effects

    SciTech Connect (OSTI)

    Walczak, Kamil; Yerkes, Kirk L.

    2014-05-07

    We examine heat transport carried by acoustic phonons in the systems composed of nanoscale chains of masses coupled to two thermal baths of different temperatures. Thermal conductance is obtained by using linearized Landauer-type formula for heat flux with phonon transmission probability calculated within atomistic Green's functions (AGF) method. AGF formalism is extended onto dissipative chains of masses with harmonic coupling beyond nearest-neighbor approximation, while atomistic description of heat reservoirs is also included into computational scheme. In particular, the phonon lifetimes and the phonon frequency shifts are discussed for harmonic lattices of different dimensions. Further, resonant structure of phonon transmission spectrum is analyzed with respect to reservoir-induced effects, molecular damping, and mass-to-mass harmonic coupling. Analysis of transmission zeros (antiresonances) and their accompanied Fano-shape resonances are discussed as a result of interference effects between different vibrational modes. Finally, we also predict subdiffusive transport regime for low-frequency ballistic phonons propagated along a linear chain of harmonically coupled masses.

  8. Fano interference and a slight fluctuation of the Majorana hallmark

    SciTech Connect (OSTI)

    Seridonio, A. C. [Instituto de Geociências e Ciências Exatas-IGCE, Universidade Estadual Paulista, Departamento de Física, 13506-970, Rio Claro, São Paulo (Brazil); Departamento de Física e Química, Universidade Estadual Paulista, 15385-000, Ilha Solteira, São Paulo (Brazil); Siqueira, E. C.; Dessotti, F. A.; Machado, R. S. [Departamento de Física e Química, Universidade Estadual Paulista, 15385-000, Ilha Solteira, São Paulo (Brazil); Yoshida, M. [Instituto de Geociências e Ciências Exatas-IGCE, Universidade Estadual Paulista, Departamento de Física, 13506-970, Rio Claro, São Paulo (Brazil)

    2014-02-14

    According to the Liu and Baranger [Phys. Rev. B 84, 201308(R) (2011)], an isolated Majorana state bound to one edge of a long enough Kitaev chain in the topological phase and connected to a quantum dot, results in a robust transmittance of 1/2 at zero-bias. In this work, we show that the removal of such a hallmark can be achieved by using a metallic surface hosting two adatoms in a scenario where there is a lack of symmetry in the Fano effect, which is feasible by coupling the Kitaev chain to one of these adatoms. Thus in order to detect this feature experimentally, one should apply the following two-stage procedure: (i) first, attached to the adatoms, one has to lock AFM tips in opposite gate voltages (symmetric detuning of the levels ??) and measure by an STM tip, the zero-bias conductance; (ii) thereafter, the measurement of the conductance is repeated with the gates swapped. For |??| away from the Fermi energy and in the case of strong coupling tip-host, this approach reveals in the transmittance, a persistent dip placed at zero-bias and immune to the aforementioned permutation, but characterized by an amplitude that fluctuates slightly around 1/2. However, in the case of a tip acting as a probe, the adatom decoupled from the Kitaev chain becomes completely inert and no fluctuation is observed. Therefore, the STM tip must be considered in the same footing as the “host+adatoms” system. As a result, we have found that despite the small difference between these two Majorana dips, the zero-bias transmittance as a function of the symmetric detuning yields two distinct behaviors, in which one of them is unpredictable by the standard Fano's theory. Therefore, to access such a non trivial pattern of Fano interference, the hypothesis of the STM tip acting as a probe should be discarded.

  9. Development of a simple, compact, low-cost interference lithography system

    E-Print Network [OSTI]

    Korre, Hasan

    Interference lithography (IL) has proven itself to be an enabling technology for nanofabrication. Within IL, issues of spatial phase distortion, fringe stability, and substrate development have been explored and addressed. ...

  10. Coherent anti-Stokes Raman scattering (CARS) optimized by exploiting optical interference 

    E-Print Network [OSTI]

    Wang, Xi

    2012-07-16

    The purpose of this work is to study the interference between the coherent nonresonant four-wave-mixing (FWM) background and the Raman-resonant signal in the coherent anti-Stokes Raman spectroscopy (CARS). The nonresonant background is usually...

  11. Synthetic Aperture Digital Beamsteering Array for Global Positioning System Interference Mitigation: A Study on Array Topology 

    E-Print Network [OSTI]

    Harms, Joel K

    2014-05-20

    The Global Positioning System (GPS) satellite navigation system is deeply intertwined with civilian everyday life. Unfortunately for the civilians that use the system, the GPS system is vulnerable to external interference. Antenna arrays...

  12. Understanding and Mitigating the Impact of RF Interference on 802.11 Networks

    E-Print Network [OSTI]

    Abstract We study the impact on 802.11 networks of RF interference from devices such as Zigbee and cordless that includes 2.4GHz cordless phones, Bluetooth headsets, Zigbee Work done while the author was at Intel

  13. Amplification of interference color by using liquid crystal for protein detection

    SciTech Connect (OSTI)

    Zhu, Qingdi; Yang, Kun-Lin

    2013-12-09

    Micrometer-sized, periodic protein lines printed on a solid surface cause interference color which is invisible to the naked eye. However, the interference color can be amplified by using a thin layer of liquid crystal (LC) covered on the surface to form a phase diffraction grating. Strong interference color can thus be observed under ambient light. By using the LC-amplified interference color, we demonstrate naked-eye detection of a model protein—immunoglobulin G (IgG). Limit of detection can reach 20??g/ml of IgG without using any instrumentation. This detection method is potentially useful for the development of low-cost and portable biosensors.

  14. Nanotechnology in our Daily Life Iridescent car paint: Based on interference colors

    E-Print Network [OSTI]

    Himpsel, Franz J.

    Nanotechnology in our Daily Life Iridescent car paint: Based on interference colors (like a butterly, no bleaching after 5 years Miami) #12;Nanotechnology on our Desktops Hard Disk Sensor Medium

  15. Topography and refractometry of nanostructures using spatial light interference microscopy (SLIM)

    E-Print Network [OSTI]

    Gillette, Martha U.

    Topography and refractometry of nanostructures using spatial light interference microscopy (SLIM topography at a single atomic layer in graphene. Further, using a decoupling procedure that we developed high- throughput topography and refractometry of man-made and biological nanostructures. Quantitative

  16. Owner's Interference in Reverse Auction Bidding to Skew a Free Market 

    E-Print Network [OSTI]

    Chaudhari, Sushil V.

    2010-07-14

    controversial bidding system. No previous research has been undertaken by the Texas A&M University Reverse Auction Bidding study group into potential owner interference with the bidding system for a reverse auction. Six bidders were asked to participate...

  17. Common-path interference and oscillatory Zener tunneling in bilayer graphene p-n junctions

    E-Print Network [OSTI]

    Nandkishore, Rahul Mahajan

    Interference and tunneling are two signature quantum effects that are often perceived as the yin and yang of quantum mechanics: a particle simultaneously propagating along several distinct classical paths versus a particle ...

  18. Novel Atomic Coherence and Interference Effects in Quantum Optics and Atomic Physics 

    E-Print Network [OSTI]

    Jha, Pankaj

    2012-10-19

    It is well known that the optical properties of multi-level atomic and molecular system can be controlled and manipulated efficiently using quantum coherence and interference, which has led to many new effects in quantum ...

  19. Development of Transgenic Livestock with Reduced Myostatin Expression Using RNA Interference 

    E-Print Network [OSTI]

    Tessanne, Kimberly J.

    2012-02-14

    RNA interference (RNAi) is a means of regulating gene expression by targeting mRNA in a sequence-specific manner for degradation or translational inhibition. Short hairpin RNAs (shRNAs) and short interfering RNAs (siRNAs) ...

  20. From Spectrum Pooling to Space Pooling: Opportunistic Interference Alignment in MIMO Cognitive Networks

    E-Print Network [OSTI]

    Perlaza, Samir M.

    We describe a noncooperative interference alignment (IA) technique which allows an opportunistic multiple input multiple output (MIMO) link (secondary) to harmlessly coexist with another MIMO link (primary) in the same ...

  1. A Study on Driving Interference-fit Fastener Using Stress Wave Zengqiang Cao1,a

    E-Print Network [OSTI]

    Qin, Qinghua

    clearance and support, but handheld hammering tools have to be used sometimes being of structure limit of 30CrMnSiA interference bolt using stress wave, but fatigue test results were not ideal. Being

  2. 1. Shielding against Electromagnetic Interference With telecommunication networks connecting wireless devices around the globe, there

    E-Print Network [OSTI]

    Rincon-Mora, Gabriel A.

    #12;1. Shielding against Electromagnetic Interference With telecommunication networks connecting electromagnetic fields that hinder today's increasingly sensitive high-performance electronics [1]. Shielding-plagued consumer market where wireless gadgets thrive. A shield, unfortunately, is not always reliable across

  3. APPLICATION OF ICA FOR AUTOMATIC NOISE AND INTERFERENCE CANCELLATION IN MULTISENSORY BIOMEDICAL SIGNALS

    E-Print Network [OSTI]

    Cichocki, Andrzej

    SIGNALS Andrzej Cichocki and Sergiy Vorobyov Lab. for Advanced Brain Signal Processing, Brain Science (trials). Traditional signal processing techniques, such as Wiener ltering, adaptive noise cancelerAPPLICATION OF ICA FOR AUTOMATIC NOISE AND INTERFERENCE CANCELLATION IN MULTISENSORY BIOMEDICAL

  4. A tool for synthesizing spike trains with realistic interference

    E-Print Network [OSTI]

    Smith, Leslie S.

    Mtetwa a aDepartment of Computing Science and Mathematics, University of Stirling, UK Abstract Spike dish). We present an analysis of the transmission of intracellular signals from neurons

  5. Documents Related to the ICP

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit theCovalentLaboratory |Sector Full reportTown August1 -DocumentsCLEANUP

  6. On the Asymptotic Analysis of Average Interference Power Generated by a Wireless Sensor Network

    E-Print Network [OSTI]

    Yanikomeroglu, Halim

    was supported by Saudi Aramco, Dhahran, Saudi Arabia. GHz at six locations including the New York City [5

  7. Understanding and eliminating iron interference in colorimetric nitrate and nitrite analysis

    E-Print Network [OSTI]

    Colman, Benjamin P.

    2010-01-01

    to cadmium for photomet- ric nitrate determinations in waterNitrogen, nitrate–nitrite (spectrophotometric, cadmiumDetermination of nitrate in sea water by cadmium- copper

  8. Performance Analysis of Passive UHF RFID Systems under Cascaded Fading Channels and Interference Effects

    E-Print Network [OSTI]

    Bekkali, Abdelmoula; Zou, Sicheng; Kadri, Abdullah; Penty, Richard

    2014-10-31

    .V. Nikitin and K.V.S. Rao, “Effect of gen2 protocol parameters on RFID tag performance”in Proc. 2009 Intl. Conf. on RFID, pp.117-122, Apr.2009. [30] A. G. Dimitriou, A. Bletsa, A.C. Polycarpou, J. N. Sahalos “Theoretical Findings and Measurements on Planning...

  9. Understanding and eliminating iron interference in colorimetric nitrate and nitrite analysis

    E-Print Network [OSTI]

    Colman, Benjamin P.

    2010-01-01

    from anaerobically digested sewage sludge by a new chemicalis reduced by metals in sewage sludge including cadmium (Ito

  10. Determining coal permeabilities through constant pressure production interference testing 

    E-Print Network [OSTI]

    Schubarth, Stephen Kurt

    1983-01-01

    COMPUTER TEST NO. 2. . . Page 3 RESULTS OF COMPUTER SIMULATION TEST DATA ANALYSIS. . . . . . 16 4 GRID PATTERN BREAKUP USED IN RESERVOIR SIMULATOR TESTS 18 5 SIMULATOR INPUT PARAMETERS REMAINING CONSTANT. . . 6 FINE GRID BREAKUP USED IN MODEL... to the diffusivity equation. & A variety of both inner and outer boundary conditions were investigated. The diffusivity equation appeared in the following form. a r2 r 3 r at . 002637 Solutions to this equation were derived assuming that a slightly compressible...

  11. Manifestation of a nonclassical Berry phase of an electromagnetic field in atomic Ramsey interference

    E-Print Network [OSTI]

    Shi-Biao Zheng

    2012-03-02

    The Berry phase acquired by an electromagnetic field undergoing an adiabatic and cyclic evolution in phase space is a purely quantum-mechanical effect of the field. However, this phase is usually accompanied by a dynamical contribution and cannot be manifested in any light-beam interference experiment because it is independent of the field state. We here show that such a phase can be produced using an atom coupled to a quantized field and driven by a slowly changing classical field, and it is manifested in atomic Ramsey interference oscillations. We also show how this effect may be applied to one-step implementation of multiqubit geometric phase gates, which is impossible by previous geometric methods. The effects of dissipation and fluctuations in the parameters of the pump field on the Berry phase and visibility of the Ramsey interference fringes are analyzed.

  12. Novel Bose-Einstein Interference in the Passage of a Fast Particle in a Dense Medium

    E-Print Network [OSTI]

    Cheuk-Yin Wong

    2012-03-20

    When an energetic particle collides coherently with many medium particles at high energies, the Bose-Einstein symmetry with respect to the interchange of the exchanged virtual bosons leads to a destructive interference of the Feynman amplitudes in most regions of the phase space but a constructive interference in some other regions of the phase space. As a consequence, the recoiling medium particles have a tendency to come out collectively along the direction of the incident fast particle, each carrying a substantial fraction of the incident longitudinal momentum. Such an interference appearing as collective recoils of scatterers along the incident particle direction may have been observed in angular correlations of hadrons associated with a high-$p_T$ trigger in high-energy AuAu collisions at RHIC.

  13. Bose-Einstein Interference in the Passage of a Jet in a Dense Medium

    E-Print Network [OSTI]

    Cheuk-Yin Wong

    2012-04-16

    When a jet collides coherently with many parton scatterers at very high energies, the Bose-Einstein symmetry with respect to the interchange of the virtual bosons leads to a destructive interference of the Feynman amplitudes in most regions of the momentum transfer phase space but a constructive interference in some other regions of the momentum transfer phase space. As a consequence, the recoiling scatterers have a tendency to come out collectively along the incident jet direction, each carrying a substantial fraction of the incident jet longitudinal momentum. The manifestation of the Bose-Einstein interference as collective recoils of the scatterers along the jet direction may have been observed in angular correlations of hadrons associated with a high-pT trigger in high-energy heavy-nuclei collisions at RHIC and LHC.

  14. Interference of wedge-shaped protrusions on the faces of a Griffith crack in biaxial stress. Final report

    SciTech Connect (OSTI)

    Boulet, J.A.M. [Tennessee Univ., Knoxville, TN (United States)

    1992-04-01

    An initial investigation of the influence of protrusion interference on the fracture toughness required to prevent unstable propagation of a Griffith crack in a brittle material is described. The interference is caused by relative shear displacement of the crack faces when subjected to remote biaxial stress with neither principal stress parallel to the crack. It is shown that for room temperature cracks smaller than about one centimeter in silicon carbide, or about one millimeter in silicon nitride, the presence of interference changes the fracture stress. A mathematical model based on linear elasticity solutions and including multiple interference sites at arbitrarily specified positions on the crack is presented. Computations of the change in required fracture toughness and its dependence on wedge geometry (size and vertex angle), applied stresses (orientation and magnitude), and location of the interference site are discussed. Results indicate that a single interference site has only a slight effect on required toughness. However, the influence of interference increases monotonically with the number of interference sites. The two-dimensional model described herein is not accurate when the interference sites are closely spaced.

  15. Sandia Energy - Siting: Wind Turbine/Radar Interference Mitigation

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust, High-Throughput AnalysisSinkhole OfficialsWorkSensors & Optical

  16. Observations of dust acoustic waves driven at high frequencies: Finite dust temperature effects and wave interference

    E-Print Network [OSTI]

    Merlino, Robert L.

    Observations of dust acoustic waves driven at high frequencies: Finite dust temperature effects An experiment has been performed to study the behavior of dust acoustic waves driven at high frequencies f 100 are observed--interference effects between naturally excited dust acoustic waves and driven dust acoustic waves

  17. Model Calculations of Protein Pair Interference Functions P. B. MOORE AND D. I~. ENGELMAN

    E-Print Network [OSTI]

    of the interference cross term, derived from neutron scattering studies of structures containing pairs of deuterated by the neutron scattering method, and should help clarify the interpretation of such data. A2. Method Our and -~2 are the radii of the spheres in question, px and p2 are their respective scattering densities

  18. Superconducting quantum interference device as a near-quantum-limited amplifier at 0.5 GHz

    E-Print Network [OSTI]

    Le Roy, Robert J.

    Superconducting quantum interference device as a near-quantum-limited amplifier at 0.5 GHz Michael 94720 Received 10 October 2000; accepted for publication 14 December 2000 A dc superconducting quantum, for example, superconducting transition-edge sensors for infrared, optical, and ultraviolet wavelengths,2

  19. A Measurement Study of Zigbee-based Indoor Localization Systems Under RF Interference

    E-Print Network [OSTI]

    Huang, Polly

    A Measurement Study of Zigbee-based Indoor Localization Systems Under RF Interference Seng 802.11) and Zigbee (IEEE 802.15.4) all operate in the 2.4x GHz fre- quency bands. The stability and availability of RSSI infor- mation for WiFi- or Zigbee-based localization systems may vary depending

  20. ZiFi: Wireless LAN Discovery via ZigBee Interference Ruogu Zhou1

    E-Print Network [OSTI]

    Xing, Guoliang

    ZiFi: Wireless LAN Discovery via ZigBee Interference Signatures Ruogu Zhou1 , Yongping Xiong2- ronments. In this work, we develop a system called ZiFi that utilizes ZigBee radios to identify integrating a TelosB mote through the USB interface, and a Nokia N73 smart- phone integrating a ZigBee card

  1. Loop induced interference effects in Higgs Boson plus two jet production at the LHC.

    E-Print Network [OSTI]

    Andersen, Jeppe R.; Binoth, T.; Heinrich, G.; Smillie, Jennifer M.

    We calculate the order O(?2?3 s) interference effect between the gluon fusion and weak boson fusion processes allowed at the one-loop level in Higgs boson plus 2 jet production at the LHC. The corresponding one-loop amplitudes, which have...

  2. Electromagnetic interference shielding using continuous carbon-fiber carbon-matrix and polymer-matrix composites

    E-Print Network [OSTI]

    Chung, Deborah D.L.

    Electromagnetic interference shielding using continuous carbon-fiber carbon-matrix and polymer of polymer-matrix composites with continuous carbon-fibers was less and that of polymer-matrix composites the shielding effectiveness. The dominant mechanism of EMI shielding for both carbon-matrix and polymer

  3. Author's personal copy Numerical study of interference between simple-shape bodies in hypersonic flows

    E-Print Network [OSTI]

    Riabov, Vladimir V.

    force has been found to become significant with a lift-drag ratio of 0.35. Blevins [12] previously, the configuration of subsonic flow zones), skin friction, pressure distribu- tion, lift, and drag have been found. Ó, wedges, cones, disks, spheres, torus, and cylinders (see Refs. [1­7]). The interference effect for flat

  4. Wong & Lok: Theory of Digital Communications 4. ISI & Equalization Intersymbol Interference and Equalization

    E-Print Network [OSTI]

    Wong, Tan F.

    Wong & Lok: Theory of Digital Communications 4. ISI & Equalization Chapter 4 Intersymbol interference (ISI), degrades the error performance of the communication system. There are two major ways to mitigate the detrimental effect of ISI. The first method is to design bandlimited transmission pulses which

  5. Initialization Techniques for Improved Convergence of LMS DFEs in Strong Interference Environments

    E-Print Network [OSTI]

    Beex, A. A. "Louis"

    Initialization Techniques for Improved Convergence of LMS DFEs in Strong Interference Environments@vt.edu Abstract-- The least-mean square (LMS) decision-feedback equalizer (DFE) was previously shown [1], [2 to initialize (data-aided initialization) the LMS weights with an estimate for the Wiener weights. In this paper

  6. Outage Probability of Amplify-and-Forward Opportunistic Relaying with Multiple Interferers

    E-Print Network [OSTI]

    Lee, Jae Hong

    Outage Probability of Amplify-and-Forward Opportunistic Relaying with Multiple Interferers over channels. We derive the closed-form expression of the outage probability for the AF opportunistic relaying derive the analytical results. Also, in [9], the authors investigate the outage behavior of the dual

  7. Mesoscopics in Spintronics: Quantum Interference Effects in Spin-Polarized Electron Branislav K. Nikolic

    E-Print Network [OSTI]

    Nikolic, Branislav K.

    Mesoscopics in Spintronics: Quantum Interference Effects in Spin-Polarized Electron Transport to allow for envisioned quantum technologies that manipulate spin, such as spintronics1,2 or solid-state quantum computing with spin-qubits.3 Spintronic engi- neering of spin-polarized currents, combined

  8. LETTER Communicated by Daniel Bush Oscillator-Interference Models of Path Integration

    E-Print Network [OSTI]

    Orchard, Jeffery J.

    and long-range inhibition connectivity can spontaneously gen- erate grid-cell-like activity patterns of Technology doi:10.1162/NECO_a_00701 #12;Oscillator-Based Path Integration Without Theta 549 and long-rangeLETTER Communicated by Daniel Bush Oscillator-Interference Models of Path Integration Do

  9. QCD and Electroweak Interference in Higgs production by Gauge Boson Fusion

    E-Print Network [OSTI]

    Jeppe R. Andersen; Jennifer M. Smillie

    2007-05-01

    We explicitly calculate the contribution to Higgs production at the LHC from the interference between gluon-gluon and Weak Vector Boson fusion, and compare it to the pure QCD and pure Electro-weak result. While the effect is small at tree level, we speculate it will be significantly enhanced by loop effects.

  10. Neural Mechanisms of Interference Control Underlie the Relationship Between Fluid Intelligence and Working Memory Span

    E-Print Network [OSTI]

    Neural Mechanisms of Interference Control Underlie the Relationship Between Fluid Intelligence Andrew R. A. Conway Princeton University Todd S. Braver Washington University in St. Louis Fluid studies show that much of the variance in gF and WM span is shared, suggesting common neural mechanisms

  11. LISA: L-Band Interference Surveyor/Analyzer LISA co-observes with existing

    E-Print Network [OSTI]

    Ellingson, Steven W.

    spiral antenna · Spectrum analyzer for full- bandwidth monitoring of power spectral density · 14 MHz (8 Island, VA Spectrum analyzer, electronics rack & control console mounted in cabin RF distributionLISA: L-Band Interference Surveyor/Analyzer LISA co-observes with existing passive microwave

  12. Reinvestigating Channel Orthogonality -Adjacent Channel Interference in IEEE 802.11n Networks

    E-Print Network [OSTI]

    .11 with a focus on new 802.11n standard. ACI is causing problems that are related to the carrier sensing mechanism,sombrutz}@informatik.hu-berlin.de Abstract--In this paper we analyze the adverse effects of Adjacent Channel Interference (ACI) on 802 effect of ACI can be reduced in two ways. First, by increasing the spatial separation between the radios

  13. Water Power Technologies The most widespread environmental constraints to the development of hydropower are interference

    E-Print Network [OSTI]

    to the development of hydropower are interference with fish passage, provision of adequate environmental flows to address these issues and to help ensure environmentally sound hydropower development in the following through hydropower turbines, remains a serious problem at many sites. The fish passage task focuses

  14. An analog approach to interference suppression in ultra-wideband receivers 

    E-Print Network [OSTI]

    Fischer, Timothy W.

    2007-09-17

    are presented, and a solution is proposed. To combat interference in Multi-Band OFDM (MB-OFDM) UWB systems, an analog notch filter is designed to be included in the UWB receive chain. The architecture of the filter is based on feed-forward subtraction...

  15. ON PROBE-LEVEL INTERFERENCE AND NOISE MODELING IN GENE EXPRESSION MICROARRAY EXPERIMENTS

    E-Print Network [OSTI]

    ON PROBE-LEVEL INTERFERENCE AND NOISE MODELING IN GENE EXPRESSION MICROARRAY EXPERIMENTS Paul G is received via a cascade of two noisy chan- nels that model noise (uncertainty) before, during, and af- ter processing model of gene expression microarray experiments using oligonucleotide technologies. The objective

  16. A Statistical and Physical MechanismsBased Interference and Noise Model for Array Observations \\Lambda

    E-Print Network [OSTI]

    Blum, Rick

    A Statistical and Physical Mechanisms­Based Interference and Noise Model for Array Observations is a member of IEEE. K. F. McDonald is a student member. 1 #12; Abstract A statistical noise model is developed from mathematical modeling of the physical mechanisms that generate noise in communication

  17. Interference Resilient PDES on Multi-core Systems: Towards Proportional Slowdown

    E-Print Network [OSTI]

    Ponomarev, Dmitry V.

    Interference Resilient PDES on Multi-core Systems: Towards Proportional Slowdown Jingjing Wang define a new metric, which we call proportional slowdown, that rep- resents the idealized target far short of proportional slowdown. Based on these observations, we design alternative simulation

  18. A Weighted Interference Estimation Scheme for Interface Switching Wireless Mesh Networks

    E-Print Network [OSTI]

    . Typically, a WMN is a collection of wireless mesh routers and wireless mobile mesh clients. Wireless mesh to wireless mesh routers via either wired or wireless connections. In addition, a small number of wirelessA Weighted Interference Estimation Scheme for Interface Switching Wireless Mesh Networks Yunxia

  19. A Weighted Interference Estimation Scheme for Interface Switching Wireless Mesh Networks

    E-Print Network [OSTI]

    . A WMN is a collection of stationary wireless mesh routers and mobile mesh clients. Wireless mesh routers mesh routers via traditional Ethernet or wireless connections. Through multi-hop wireless relay, mobileA Weighted Interference Estimation Scheme for Interface Switching Wireless Mesh Networks Yunxia

  20. The influence of single-walled carbon nanotube structure on the electromagnetic interference shielding

    E-Print Network [OSTI]

    Gao, Hongjun

    shielding efficiency of its epoxy composites Yi Huang a , Ning Li a , Yanfeng Ma a , Feng Du a , Feifei Li.01­15%) have been evaluated for electromagnetic interference (EMI) shielding effectiveness (SE) in the X that the composites can be used as effective lightweight EMI shielding materials. Furthermore, their EMI performance

  1. Multimode-Interference Waveguide Crossing Coupled Microring-Resonator-Based Switch Nodes for Photonic

    E-Print Network [OSTI]

    Poon, Andrew Wing On

    -dimensional nonblocking low-power photonic switch nodes for networks-on-chip using multimode-interference-based waveguide. Our photonic crossbar design offers low-power dissipation, scalability, and small device foot (e.g. nodes 1 and 3) consume no switching power. Assuming a microring resonance Q of ~104 , we see

  2. Interference Shaping for Improved Quality of Experience for Real-Time Video Streaming

    E-Print Network [OSTI]

    de Veciana, Gustavo

    performance metrics like rate or delay. This is driven by the fact that users churn as they become users by decreasing the peak rate of co-channel best effort users. Wireless link capacity variations are mapped to the real- time video packet loss rate, and the interference shaping QoE gain for video users

  3. Effects of Correlated Interference on the Potential Linear Antenna Gain in CDMA Macrodiversity Systems

    E-Print Network [OSTI]

    Yanikomeroglu, Halim

    University, Ottawa, Canada E­mail: halim@sce.carleton.ca 2 Dept. of Electrical and Computer Engineering be attained by using L an­ tenna elements (AEs) provided that the spread spectrum bandwidth approaches of multiple AEs will be less than linear due to the presence of the correlated interference effects

  4. Three-Dimensional Momentum Imaging of Electron Wave Packet Interference in Few-Cycle Laser Pulses

    E-Print Network [OSTI]

    Kling, Matthias

    ) spectra have been recorded for carrier-envelope-phase (CEP) stabilized few-cycle ($5 fs), intense ($4 Â in P space at CEPs with maximum asymmetry, interpreted as attosecond interferences of rescattered suppressed barrier. The electron then undergoes an oscillatory motion in the electric field to achieve

  5. Optimal Power Control for Energy Harvesting Transmitters in an Interference Channel

    E-Print Network [OSTI]

    Yener, Aylin

    of energy harvesting wireless communi- cation devices in the near future. The design principles of energy it inapplicable for nodes with limited battery capacity. An alternative approach enforcing strict energyOptimal Power Control for Energy Harvesting Transmitters in an Interference Channel Kaya

  6. Released 1/24/07 ESTROGEN INTERFERES WITH IMMUNE SURVEILLANCE IN BREAST CANCER

    E-Print Network [OSTI]

    Wraight, Colin A.

    Released 1/24/07 ESTROGEN INTERFERES WITH IMMUNE SURVEILLANCE IN BREAST CANCER CONTACT: Diana Yates the growth and migration of breast cancer cells. Now researchers from the University of Illinois at Champaign-Urbana have found that estrogen can also shield breast cancer cells from immune cells. In a study published

  7. Sequence estimation in the presence of interference via the expectation-maximization algorithm 

    E-Print Network [OSTI]

    Zhang, Quan G

    1996-01-01

    performance in terms of bit error rate (BER) for single tone interference with both random phase and amplitude. We compare the algorithm with the suboptimal approach of using a digital transversal filter as a notch filter. Finally we present simulation results...

  8. Tolerance in the Ramsey interference of a trapped nanodiamond

    E-Print Network [OSTI]

    C. Wan; M. Scala; S. Bose; A. C. Frangeskou; ATM A. Rahman; G. W. Morley; P. F. Barker; M. S. Kim

    2015-09-02

    The scheme recently proposed in [M. Scala et al., Phys Rev Lett 111, 180403 (2013)], where a gravity-dependent phase shift is induced on the spin of a nitrogen-vacancy (NV) center in a trapped nanodiamond by the interaction between its magnetic moment and the quantized motion of the particle, provides a way to detect spatial quantum superpositions by means of spin measurements only. Here, the effect of unwanted coupling with other motional degrees of freedom is considered and we show that it does not affect the validity of the scheme. Both this coupling and the additional error source due to misalignment between the quantization axis of the NV center spin and the trapping axis are shown not to change the qualitative behavior of the system, so that a proof-of- principle experiment can be neatly performed. Our analysis, which shows that the scheme retains the important features of not requiring ground state cooling and of being resistant to thermal fluctuations, can be useful for the several schemes which have been proposed recently for testing macroscopic superpositions in trapped microsystems.

  9. Hydraulic interference testbetween several doublets in the Dogger aquifer in Ile-de-France region (Val-de-Marne)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Hydraulic interference testbetween several doublets in the Dogger aquifer in Ile-de-France region of the "thermal breakthrough".One uncertainty of these models is the hydraulic interference between the different of the hydraulic test whichwas carried out in September 2013.The test included 5 geothermal doublets (Cachan 1

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

    E-Print Network [OSTI]

    Gilchrist, James F.

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

  11. The Effect of Out of Cluster Interference on Coordinated Beamforming in LTE-A HetNets

    E-Print Network [OSTI]

    Rakocevic, Veselin

    high power base stations produce strong interference to an underlying layer of low power base stations of an existing network with the help of pico BSs. Such base stations have a reduced transmit power (typically 10. This work investigates the impact of the interference from base stations which are not part

  12. Observation of interference between two Bose condensates The spatial coherence of a Bose condensate was demonstrated by observing

    E-Print Network [OSTI]

    Observation of interference between two Bose condensates The spatial coherence of a Bose condensate was demonstrated by observing interference between two Bose condensates [1]. They were created by cooling atoms the condensates expand for 40 milliseconds and overlap (see figure). This demonstrates that Bose condensed atoms

  13. Sum-Rate Optimal Power Policies for Energy Harvesting Transmitters in an Interference Channel

    E-Print Network [OSTI]

    Tutuncuoglu, Kaya

    2011-01-01

    This paper considers a two-user Gaussian interference channel with energy harvesting transmitters. Different than conventional battery powered wireless nodes, energy harvesting transmitters have to adapt transmission to availability of energy at a particular instant. In this setting, the optimal power allocation problem to maximize sum throughput within a given deadline is formulated. The convergence of the proposed iterative coordinate descent method for the problem is proved and the short-term throughput maximizing offline power allocation policy is found. Examples for interference regions with known sum capacities are given with directional water-filling interpretations when possible. Next, stochastic data arrivals are addressed. Finally online and/or distributed near-optimal policies are proposed. Performance of the proposed algorithms are demonstrated through simulations.

  14. Quantum interference and sub-Poissonian statistics for time-modulated driven dissipative nonlinear oscillators

    SciTech Connect (OSTI)

    Gevorgyan, T. V. [Institute for Physical Research, National Academy of Sciences, Ashtarak-2, 0203 Ashtarak (Armenia); Shahinyan, A. R. [Yerevan State University, A. Manoogian 1, 0025 Yerevan (Armenia); Kryuchkyan, G. Yu. [Institute for Physical Research, National Academy of Sciences, Ashtarak-2, 0203 Ashtarak (Armenia); Yerevan State University, A. Manoogian 1, 0025 Yerevan (Armenia)

    2009-05-15

    We show that quantum-interference phenomena can be realized for the dissipative nonlinear systems exhibiting hysteresis-cycle behavior and quantum chaos. Such results are obtained for a driven dissipative nonlinear oscillator with time-dependent parameters and take place for the regimes of long time intervals exceeding dissipation time and for macroscopic levels of oscillatory excitation numbers. Two schemas of time modulation, (i) periodic variation in the strength of the {chi}(3) nonlinearity; (ii) periodic modulation of the amplitude of the driving force, are considered. These effects are obtained within the framework of phase-space quantum distributions. It is demonstrated that the Wigner functions of oscillatory mode in both bistable and chaotic regimes acquire negative values and interference patterns in parts of phase-space due to appropriately time modulation of the oscillatory nonlinear dynamics. It is also shown that the time modulation of the oscillatory parameters essentially improves the degree of sub-Poissonian statistics of excitation numbers.

  15. N-Slit Interference: Fractals in Near-Field Region, Bohmian Trajectories

    E-Print Network [OSTI]

    Valeriy I. Sbitnev

    2009-09-09

    Scattering cold particles on an $N$-slit grating is shown to reproduce an interference pattern, that manifests itself in the near-field region as the fractal Talbot carpet. In the far-field region the pattern is transformed to an ordinary diffraction, where principal beams are partitioned from each other by ($N-2$) weak ones. A probability density plot of the wave function, to be represented by a gaussian wavepacket, is calculated both in the near-field region and in the far-field one. Bohmian (geodesic) trajectories, to be calculated by a guidance equation, are superimposed on the probability density plot well enough. It means, that a particle, moving from a source to a detector, passes across the grating along a single bohmian trajectory through-passing one and only one slit. Keywords: Gaussian wavepacket, neutron scattering, guidance equation, bohmian trajectory, near-field interference, far-field diffraction, Talbot carpet, fractal

  16. LPM Interference and Cherenkov-like Gluon Bremsstrahlung in DenseMatter

    SciTech Connect (OSTI)

    Majumder, Abhijit; Wang, Xin-Nian

    2005-07-26

    Gluon bremsstrahlung induced by multiple parton scattering in a finite dense medium has a unique angular distribution with respect to the initial parton direction. A dead-cone structure with an opening angle; theta2{sub 0}; approx 2(1-z)/(zLE) for gluons with fractional energy z arises from the Landau-Pomeran chuck-Migdal (LPM) interference. In a medium where the gluon's dielectric constant is; epsilon>1, the LPM interference pattern is shown to become Cherenkov-like with an increased opening angle determined by the dielectric constant$/cos2/theta{sub c}=z+(1-z)//epsilon$. For a large dielectric constant/epsilon; gg 1+2/z2LE, the corresponding total radiative parton energy loss is about twice that from normal gluon bremsstrahlung. Implications of this Cherenkov-like gluon bremsstrahlung to the jet correlation pattern in high-energy heavy-ion collisions is discussed.

  17. Observation of Quantum Interferences via Light Induced Conical Intersections in Diatomic Molecules

    E-Print Network [OSTI]

    Natan, Adi; Bucksbaum, Philip H

    2015-01-01

    We observe energy-dependent angle-resolved diffraction patterns in protons from strong-field dissociation of the molecular hydrogen ion H$_2^+$. The interference is a characteristic of dissociation around a laser-induced conical intersection (LICI), which is a point of contact between two surfaces in the dressed 2-dimensional Born-Oppenheimer potential energy landscape of a diatomic molecule in a strong laser field. The interference magnitude and angular period depend strongly on the energy difference between the initial state and the LICI, consistent with coherent diffraction around a cone-shaped potential barrier whose width and thickness depend on the relative energy of the initial state and the cone apex. These findings are supported by numerical solutions of the time-dependent Schr\\"{o}dinger equation for similar experimental conditions.

  18. Quantum Walks With Neutral Atoms: Quantum Interference Effects of One and Two Particles

    E-Print Network [OSTI]

    Robens, Carsten; Meschede, Dieter; Alberti, Andrea

    2015-01-01

    We report on the state of the art of quantum walk experiments with neutral atoms in state-dependent optical lattices. We demonstrate a novel state-dependent transport technique enabling the control of two spin-selective sublattices in a fully independent fashion. This transport technique allowed us to carry out a test of single-particle quantum interference based on the violation of the Leggett-Garg inequality and, more recently, to probe two-particle quantum interference effects with neutral atoms cooled into the motional ground state. These experiments lay the groundwork for the study of discrete-time quantum walks of strongly interacting, indistinguishable particles to demonstrate quantum cellular automata of neutral atoms.

  19. Interpretation of Scanning Tunneling Quasiparticle Interference and Impurity States in Cuprates

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

    Kreisel, A.; Choubey, P.; Berlijn, T.; Ku, W.; Andersen, B. M.; Hirschfeld, P. J.

    2015-05-27

    We apply a recently developed method combining first principles based Wannier functions with solutions to the Bogoliubov-de Gennes equations to the problem of interpreting STM data in cuprate superconductors. We show that the observed images of Zn on the surface of Bi2Sr2CaCu2O8 can only be understood by accounting for the tails of the Cu Wannier functions, which include significant weight on apical O sites in neighboring unit cells. This calculation thus puts earlier crude “filter” theories on a microscopic foundation and solves a long standing puzzle. We then study quasiparticle interference (QPI) phenomena induced by out-of-plane weak potential scatterers, andmore »show how patterns long observed in cuprates can be understood in terms of the interference of Wannier functions above the surface. Our results show excellent agreement with experiment and enable a better understanding of novel phenomena in the cuprates via STM imaging.« less

  20. The new method of interference contributions accounting for inelastic scattering diagrams

    E-Print Network [OSTI]

    Sharph, I V; Deliyergiyev, M A; Merkotan, K K; Chudak, N O; Ptashynskyy, D A; Sokhrannyi, G O; Tykhonov, A V; Volkotrub, Yu V; Shabatura, U V; Rusov, V D

    2015-01-01

    A new method of interference contributions accounting is proposed. This method makes it possible to solve the problem of accounting the particles identity in the final state of the scattering process. This problem requires the calculation of a huge number of multidimensional integrals that express the scattering cross-section through the square modulus of the scattering amplitude. Our method is based on the physical features of the scattering amplitude. We show that the set of all interference contributions may be divided into subsets with the similar contributions. Therefore one does not need to calculate each of them separately. Within this approach it is possible to describe inelastic scattering processes with large number of secondary particles. The method was also verified within the $\\phi^3$ model using the Laplace method for the calculation of multidimensional integrals in order to compute the inclusive rapidity cross-sections. A qualitative description of experimental data was obtained. An important r...

  1. Revealing Carrier-Envelope Phase through Frequency Mixing and Interference in Frequency Resolved Optical Gating

    E-Print Network [OSTI]

    Snedden, Edward W; Jamison, Steven P

    2015-01-01

    We demonstrate that full temporal characterisation of few-cycle electromagnetic pulses, including retrieval of the carrier envelope phase (CEP), can be directly obtained from Frequency Resolved Optical Gating (FROG) techniques in which the interference between non-linear frequency mixing processes is resolved. We derive a framework for this scheme, defined Real Domain-FROG (ReD-FROG), as applied to the cases of interference between sum and difference frequency components and between fundamental and sum/difference frequency components. A successful numerical demonstration of ReD-FROG as applied to the case of a self-referenced measurement is provided. A proof-of-principle experiment is performed in which the CEP of a single-cycle THz pulse is accurately obtained and demonstrates the possibility for THz detection beyond the bandwidth limitations of electro-optic sampling.

  2. Quantum-interference-initiated superradiant and subradiant emission from entangled atoms

    SciTech Connect (OSTI)

    Wiegner, R. [Institut fuer Optik, Information und Photonik, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Erlangen (Germany); Zanthier, J. von [Institut fuer Optik, Information und Photonik, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Erlangen (Germany); Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander Universitaet Erlangen-Nuernberg (Germany); Agarwal, G. S. [Department of Physics, Oklahoma State University, Stillwater, Oklahoma (United States)

    2011-08-15

    We calculate the radiative characteristics of emission from a system of entangled atoms which can have a relative distance larger than the emission wavelength. We develop a quantum multipath interference approach which explains both super- and subradiance though the entangled states have zero dipole moment. We derive a formula for the radiated intensity in terms of different interfering pathways. We further show how the interferences lead to directional emission from atoms prepared in symmetric W states. As a byproduct of our work we show how Dicke's classic result can be understood in terms of interfering pathways. In contrast to the previous works on ensembles of atoms, we focus on finite numbers of atoms prepared in well characterized states.

  3. Ramsey Interference in One-Dimensional Systems: The Full Distribution Function of Fringe Contrast as a Probe of Many-Body Dynamics

    E-Print Network [OSTI]

    Demler, Eugene

    Ramsey Interference in One-Dimensional Systems: The Full Distribution Function of Fringe Contrast March 2010; published 24 June 2010) We theoretically analyze Ramsey interference experiments in one of decoherence. We argue that Ramsey interference experiments provide a powerful tool for analyzing strongly

  4. IFT&E Industry Report Wind Turbine-Radar Interference Test Summary.

    SciTech Connect (OSTI)

    Karlson, Benjamin; LeBlanc, Bruce Philip; Minster, David G; Estill, Milford; Miller, Bryan Edward; Busse, Franz; Keck, Chris; Sullivan, Jonathan; Brigada, David; Parker, Lorri; Younger, Richard; Biddle, Jason

    2014-10-01

    Wind turbines have grown in size and capacity with today's average turbine having a power capacity of around 1.9 MW, reaching to heights of over 495 feet from ground to blade tip, and operating with speeds at the tip of the blade up to 200 knots. When these machines are installed within the line-of-sight of a radar system, they can cause significant clutter and interference, detrimentally impacting the primary surveillance radar (PSR) performance. The Massachusetts Institute of Technology's Lincoln Laboratory (MIT LL) and Sandia National Laboratories (SNL) were co-funded to conduct field tests and evaluations over two years in order to: I. Characterize the impact of wind turbines on existing Program-of-Record (POR) air surveillance radars; II. Assess near-term technologies proposed by industry that have the potential to mitigate the interference from wind turbines on radar systems; and III. Collect data and increase technical understanding of interference issues to advance development of long-term mitigation strategies. MIT LL and SNL managed the tests and evaluated resulting data from three flight campaigns to test eight mitigation technologies on terminal (short) and long-range (60 nmi and 250 nmi) radar systems. Combined across the three flight campaigns, more than 460 of hours of flight time were logged. This paper summarizes the Interagency Field Test & Evaluation (IFT&E) program and publicly- available results from the tests. It will also discuss the current wind turbine-radar interference evaluation process within the government and a proposed process to deploy mitigation technologies.

  5. Two-color ghost interference with photon pairs generated in hot atoms

    SciTech Connect (OSTI)

    Ding Dongsheng; Zhou Zhiyuan; Shi Baosen; Zou Xubo; Guo Guangcan [Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026 (China)

    2012-09-15

    We report on an experimental observation of a two-photon ghost interference experiment. A distinguishing feature of our experiment is that the photons are generated via a non-degenerated spontaneous four-wave mixing process in a hot atomic ensemble; therefore the photon has narrow bandwidth. Besides, there is a large difference in frequency between two photons in a pair. Our works may be important to achieve more secure, large transmission capacity long-distance quantum communication.

  6. Large scale two-dimensional arrays of magnesium diboride superconducting quantum interference devices

    SciTech Connect (OSTI)

    Cybart, Shane A. Dynes, R. C.; Wong, T. J.; Cho, E. Y.; Beeman, J. W.; Yung, C. S.; Moeckly, B. H.

    2014-05-05

    Magnetic field sensors based on two-dimensional arrays of superconducting quantum interference devices were constructed from magnesium diboride thin films. Each array contained over 30?000 Josephson junctions fabricated by ion damage of 30?nm weak links through an implant mask defined by nano-lithography. Current-biased devices exhibited very large voltage modulation as a function of magnetic field, with amplitudes as high as 8?mV.

  7. Description of classical and quantum interference in view of the concept of flow line

    E-Print Network [OSTI]

    M. Davidovic; A. S. Sanz; M. Bozic

    2015-08-21

    Bohmian mechanics, a hydrodynamic formulation of quantum mechanics, relies on the concept of trajectory, which evolves in time in compliance with dynamical information conveyed by the wave function. Here this appealing idea is considered to analyze both classical and quantum interference, thus providing an alternative and more intuitive framework to understand the time-evolution of waves, either in terms of the flow of energy (for mechanical waves, sound waves, electromagnetic waves, for instance) or, analogously, the flow of probability (quantum waves), respectively. Furthermore, this procedure also supplies a more robust explanation of interference phenomena, which currently is only based on the superposition principle. That is, while this principle only describes how different waves combine and what effects these combinations may lead to, flow lines provide a more precise explanation on how the energy or probability propagate in space before, during and after the combination of such waves, without dealing with them separately (i.e., the combination or superposition is taken as a whole). In this sense, concepts such as constructive and destructive interference, typically associated with the superposition principle, physically correspond to more or less dense swarms of (energy or probability) flow lines, respectively. A direct consequence of this description is that, when considering the distribution of electromagnetic energy flow lines behind two slits, each one covered by a differently oriented polarizer, it is naturally found that external observers' information on the slit crossed by single photons (understood as energy parcels) is totally irrelevant for the existence of interference fringes, in striking contrast with what is commonly stated and taught.

  8. Quantum interference measurement of spin interactions in a bio-organic/semiconductor device structure

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

    Deo, Vincent [Ecole Polytechnique, Palaiseau (France); Virginia Tech, Blacksburg, VA (United States); Zhang, Yao [Virginia Tech, Blacksburg, VA (United States); Soghomonian, Victoria [Virginia Tech, Blacksburg, VA (United States); Heremans, Jean J. [Virginia Tech, Blacksburg, VA (United States)

    2015-03-30

    Quantum interference is used to measure the spin interactions between an InAs surface electron system and the iron center in the biomolecule hemin in nanometer proximity in a bio-organic/semiconductor device structure. The interference quantifies the influence of hemin on the spin decoherence properties of the surface electrons. The decoherence times of the electrons serve to characterize the biomolecule, in an electronic complement to the use of spin decoherence times in magnetic resonance. Hemin, prototypical for the heme group in hemoglobin, is used to demonstrate the method, as a representative biomolecule where the spin state of a metal ion affects biological functions. The electronic determination of spin decoherence properties relies on the quantum correction of antilocalization, a result of quantum interference in the electron system. Spin-flip scattering is found to increase with temperature due to hemin, signifying a spin exchange between the iron center and the electrons, thus implying interactions between a biomolecule and a solid-state system in the hemin/InAs hybrid structure. The results also indicate the feasibility of artificial bioinspired materials using tunable carrier systems to mediate interactions between biological entities.

  9. Quantum interference measurement of spin interactions in a bio-organic/semiconductor device structure

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

    Deo, Vincent; Zhang, Yao; Soghomonian, Victoria; Heremans, Jean J.

    2015-03-30

    Quantum interference is used to measure the spin interactions between an InAs surface electron system and the iron center in the biomolecule hemin in nanometer proximity in a bio-organic/semiconductor device structure. The interference quantifies the influence of hemin on the spin decoherence properties of the surface electrons. The decoherence times of the electrons serve to characterize the biomolecule, in an electronic complement to the use of spin decoherence times in magnetic resonance. Hemin, prototypical for the heme group in hemoglobin, is used to demonstrate the method, as a representative biomolecule where the spin state of a metal ion affects biologicalmore »functions. The electronic determination of spin decoherence properties relies on the quantum correction of antilocalization, a result of quantum interference in the electron system. Spin-flip scattering is found to increase with temperature due to hemin, signifying a spin exchange between the iron center and the electrons, thus implying interactions between a biomolecule and a solid-state system in the hemin/InAs hybrid structure. The results also indicate the feasibility of artificial bioinspired materials using tunable carrier systems to mediate interactions between biological entities.« less

  10. The new method of interference contributions accounting for inelastic scattering diagrams

    E-Print Network [OSTI]

    I. V. Sharph; O. S. Potiienko; M. A. Deliyergiyev; K. K. Merkotan; N. O. Chudak; D. A. Ptashynskyy; G. O. Sokhrannyi; A. V. Tykhonov; Yu. V. Volkotrub; U. V. Shabatura; V. D. Rusov

    2015-09-14

    A new method of interference contributions accounting is proposed. This method makes it possible to solve the problem of accounting the particles identity in the final state of the scattering process. This problem requires the calculation of a huge number of multidimensional integrals that express the scattering cross-section through the square modulus of the scattering amplitude. Our method is based on the physical features of the scattering amplitude. We show that the set of all interference contributions may be divided into subsets with the similar contributions. Therefore one does not need to calculate each of them separately. Within this approach it is possible to describe inelastic scattering processes with large number of secondary particles. The method was also verified within the $\\phi^3$ model using the Laplace method for the calculation of multidimensional integrals in order to compute the inclusive rapidity cross-sections. A qualitative description of experimental data was obtained. An important result of this work is the explanation of peaks behavior in the inclusive rapidity distributions and their possible interference origin.

  11. No Interference

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shinesSolarNew scholarshipThreeFebruary 2015Nikki Magdaong Fig. 1: MapsLaboratory

  12. Floquet formulation for the investigation of multiphoton quantum interference in a superconducting qubit driven by a strong ac field

    E-Print Network [OSTI]

    Son, Sang-Kil; Han, Siyuan; Chu, Shih-I

    2009-03-03

    We present a Floquet treatment of multiphoton quantum interference in a strongly driven superconducting flux qubit. The periodically time-dependent Schrödinger equation can be reduced to an equivalent time-independent infinite-dimensional Floquet...

  13. Population inversion induced by Landau--Zener transition in a strongly driven rf superconducting quantum interference device

    E-Print Network [OSTI]

    Sun, Guozhu; Wen, Xueda; Wang, Yiwen; Cong, Shanhua; Chen, Jian; Kang, Lin; Xu, Weiwei; Yu, Yang; Han, Siyuan; Wu, Peiheng

    2009-03-09

    Microwave resonances between discrete macroscopically distinct quantum states with single photon and multiphoton absorption are observed in a strongly driven radio frequency superconducting quantum interference device flux qubit. The amplitude...

  14. Observation of a narrow structure in 1 H( ? , KS0 ) X via interference with ? -meson production

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

    Amaryan, M. J.; Gavalian, G.; Nepali, C.; Polyakov, M. V.; Azimov, Ya.; Briscoe, W. J.; Dodge, G. E.; Hyde, C. E.; Klein, F.; Kuznetsov, V.; et al

    2012-03-01

    We report observation of a narrow peak structure at ?1.54 GeV with a Gaussian width ? = 6 MeV in the missing mass of KS in the reaction ? + p ? pKSKL. The observed structure may be due to the interference between a strange (or antistrange) baryon resonance in the pKL system and the ?(KSKL) photoproduction leading to the same final state. The statistical significance of the observed excess of events estimated as the log-likelihood ratio of the resonant signal + background hypothesis and the ?-production-based background-only hypothesis corresponds to 5.3?.

  15. Method and means for detecting optically transmitted signals and establishing optical interference pattern between electrodes

    DOE Patents [OSTI]

    Kostenbauder, Adnah G. (Palo Alto, CA)

    1988-01-01

    A photodetector for detecting signal pulses transmitted in an optical carrier signal relies on the generation of electron-hole pairs and the diffusion of the generated electrons and holes to the electrodes on the surface of the semiconductor detector body for generating photovoltaic pulses. The detector utilizes the interference of optical waves for generating an electron-hole grating within the semiconductor body, and, by establishing an electron-hole pair maximum at one electrode and a minimum at the other electrode, a detectable voltaic pulse is generated across the electrode.

  16. Method and means for detecting optically transmitted signals and establishing optical interference pattern between electrodes

    DOE Patents [OSTI]

    Kostenbauder, A.G.

    1988-06-28

    A photodetector for detecting signal pulses transmitted in an optical carrier signal relies on the generation of electron-hole pairs and the diffusion of the generated electrons and holes to the electrodes on the surface of the semiconductor detector body for generating photovoltaic pulses. The detector utilizes the interference of optical waves for generating an electron-hole grating within the semiconductor body, and, by establishing an electron-hole pair maximum at one electrode and a minimum at the other electrode, a detectable voltaic pulse is generated across the electrode. 4 figs.

  17. Interference effects during the reradiation of ultrashort electromagnetic pulses by polyatomic systems

    SciTech Connect (OSTI)

    Makarov, D. N.; Matveev, V. I., E-mail: mezon98@mail.ru [Lomonosov Northern (Arctic) Federal University (Russian Federation)

    2013-11-15

    A theory of the reradiation of ultrashort electromagnetic pulses by arbitrary polyatomic systems of isolated complex atoms has been developed. The technique used allows the spatial inhomogeneity of the field of an ultrashort pulse and photon momenta in reradiation processes to be accurately taken into account. The angular distributions of the reradiation spectra have been obtained for an arbitrary number of atoms in the system. The processes of interference between the photon emission amplitudes are shown to give rise to characteristic “diffraction” maxima. We consider one-dimensional, two-dimensional, and three-dimensional rectangular lattices as examples as well as planar and cylindrical structures as models of planar nanosystems and nanotubes.

  18. On-chip quantum interference between silicon photon-pair sources

    E-Print Network [OSTI]

    Joshua W. Silverstone; Damien Bonneau; Kazuya Ohira; Nob Suzuki; Haruhiko Yoshida; Norio Iizuka; Mizunori Ezaki; Chandra M. Natarajan; Michael G. Tanner; Robert H. Hadfield; Val Zwiller; Graham D. Marshall; John G. Rarity; Jeremy L. O'Brien; Mark G. Thompson

    2014-11-20

    Large-scale integrated quantum photonic technologies will require the on-chip integration of identical photon sources with reconfigurable waveguide circuits. Relatively complex quantum circuits have already been demonstrated, but few studies acknowledge the pressing need to integrate photon sources and waveguide circuits together on-chip. A key step towards such large-scale quantum technologies is the integration of just two individual photon sources within a waveguide circuit, and the demonstration of high-visibility quantum interference between them. Here, we report a silicon-on-insulator device combining two four-wave mixing sources, in an interferometer with a reconfigurable phase shifter. We configure the device to create and manipulate two-colour (non-degenerate) or same-colour (degenerate), path-entangled or path-unentangled photon pairs. We observe up to 100.0+/-0.4% visibility quantum interference on-chip, and up to 95+/-4% off-chip. Our device removes the need for external photon sources, provides a path to increasing the complexity of quantum photonic circuits, and is a first step towards fully-integrated quantum technologies.

  19. Low-frequency Landau-Zener-Stückelberg interference in dissipative superconducting qubits

    E-Print Network [OSTI]

    lingjie du; yang yu

    2013-06-02

    Landau-Zener-St\\"uckelberg (LZS) interference of continuously driven superconducting qubits is studied. Going beyond the second order perturbation expansion, we find a time dependent stationary population evolution as well as unsymmetrical microwave driven Landau-Zener transitions, resulting from the nonresonant terms which are neglected in rotating-wave approximation. For the low-frequency driving, the qubit population at equilibrium is a periodical function of time, owing to the contribution of the nonresonant terms. In order to obtain the average population, it is found that the average approximation based on the perturbation approach can be applied to the low-frequency region. For the extremely low frequency which is much smaller than the decoherence rate, we develop noncoherence approximation by dividing the evolution into discrete time steps during which the coherence is lost totally. These approximations present comprehensive analytical descriptions of LZS interference in most of parameter space of frequency and decoherence rate, agreeing well with those of the numerical simulations and providing a simple but integrated understanding to system dynamics. The application of our models to microwave cooling can obtain the minimal frequency to realize effective microwave cooling.

  20. Photosensitive response of azobenzene containing films towards pure intensity or polarization interference patterns

    SciTech Connect (OSTI)

    Yadavalli, Nataraja Sekhar; Santer, Svetlana; Saphiannikova, Marina

    2014-08-04

    In this paper, we report on differences in the response of photosensitive azobenzene containing films upon irradiation with the intensity or polarization interference patterns. Two materials are studied differing in the molecular weight: an azobenzene-containing polymer and a molecular glass formed from a much smaller molecule consisting of three connected azobenzene units. Topography changes occurring along with the changes in irradiation conditions are recorded using a homemade set-up combining an optical part for generation and shaping of interference patterns and an atomic force microscope for acquiring the kinetics of film deformation. In this way, we could reveal the unique behavior of photosensitive materials during the first few minutes of irradiation: the change in topography is initially driven by an increase in the azobenzene free volume along with the trans-cis isomerization, followed by the mass transport finally resulting in the surface relief grating. This study demonstrates the great potential of our setup to experimentally highlight puzzling processes governing the formation of surface relief gratings.

  1. Quantum Interference Induced Photon Blockade in a Coupled Single Quantum Dot-Cavity System

    E-Print Network [OSTI]

    Jing Tang; Weidong Geng; Xiulai Xu

    2015-03-18

    We propose an experimental scheme to implement a strong photon blockade with a single quantum dot coupled to a nanocavity. The photon blockade effect can be tremendously enhanced by driving the cavity and the quantum dot simultaneously with two classical laser fields. This enhancement of photon blockade is ascribed to the quantum interference effect to avoid two-photon excitation of the cavity field. Comparing with Jaynes-Cummings model, the second-order correlation function at zero time delay $g^{(2)}(0)$ in our scheme can be reduced by two orders of magnitude and the system sustains a large intracavity photon number. A red (blue) cavity-light detuning asymmetry for photon quantum statistics with bunching or antibunching characteristics is also observed. The photon blockade effect has a controllable flexibility by tuning the relative phase between the two pumping laser fields and the Rabi coupling strength between the quantum dot and the pumping field. Moreover, the photon blockade scheme based on quantum interference mechanism does not require a strong coupling strength between the cavity and the quantum dot, even with the pure dephasing of the system. This simple proposal provides an effective way for potential applications in solid state quantum computation and quantum information processing.

  2. Nuclear interference in dissociating of HD{sup +} in ultrashort laser fields

    SciTech Connect (OSTI)

    Yang Di [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China); Cong Shulin [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)

    2011-07-15

    The dissociation dynamics of HD{sup +} molecules is studied theoretically by numerically solving the time-dependent Schroedinger equation in which the molecular vibrational and rotational degrees of freedom are included. Based on the Born-Oppenheimer approximation, the ground 1s{sigma}{sub g} state and the excited 2p{sigma}{sub u} state are taken into account, corresponding to two dissociative channels HD{sup +}{yields}D + H{sup +} and HD{sup +}{yields}H + D{sup +}, respectively. Two dissociative nuclear wave packets overlap and interfere after excited by two ultrashort laser pulses. The interference patterns can be controlled by varying the laser parameters and the dissociation probabilities are demonstrated for different laser fields. The kinetic energy-dependent distributions of the fragments are calculated using an asymptotic-flow expression in the momentum space. The branching ratio D{sup +}/(H{sup +} + D{sup +}), as a function of the delay time and the relative phase between two laser pulses, is also discussed.

  3. Survey of ambient electromagnetic and radio-frequency interference levels in nuclear power plants

    SciTech Connect (OSTI)

    Kercel, S.W.; Moore, M.R.; Blakeman, E.D.; Ewing, P.D.; Wood, R.T.

    1996-11-01

    This document reports the results of a survey of ambient electromagnetic conditions in representative nuclear power plants. The U.S. Nuclear Regulatory Commission (NRC) Office of Nuclear Regulatory Research engaged the Oak Ridge National Laboratory (ORNL) to perform these measurements to characterize the electromagnetic interference (EMI) and radio-frequency interference (RFI) levels that can be expected in nuclear power plant environments. This survey is the first of its kind, being based on long-term unattended observations. The data presented in this report were measured at eight different nuclear units and required 14 months to collect. A representative sampling of power plant conditions (reactor type, operating mode, site location) monitored over extended observation periods (up to 5 weeks) were selected to more completely determine the characteristic electromagnetic environment for nuclear power plants. Radiated electric fields were measured over the frequency range of 5 MHz to 8 GHz. Radiated magnetic fields and conducted EMI events were measured over the frequency range of 305 Hz to 5 MHz. Highest strength observations of the electromagnetic ambient environment across all measurement conditions at each site provide frequency-dependent profiles for EMI/RFI levels in nuclear power plants.

  4. RNA interference regulates the cell cycle checkpoint through the RNA export factor, Ptr1, in fission yeast

    SciTech Connect (OSTI)

    Iida, Tetsushi, E-mail: tiida@nig.ac.jp [Division of Cytogenetics, National Institute of Genetics, Mishima, 1111 Yata, Mishima 411-8540 (Japan) [Division of Cytogenetics, National Institute of Genetics, Mishima, 1111 Yata, Mishima 411-8540 (Japan); The Graduate University for Advanced Studies, Sokendai, Mishima, 1111 Yata, Mishima 411-8540 (Japan); Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8, Honcho, Kawaguchi-shi, Saitama 332-0012 (Japan); Iida, Naoko [Division of Mutagenesis, National Institute of Genetics, Mishima, 1111 Yata, Mishima 411-8540 (Japan)] [Division of Mutagenesis, National Institute of Genetics, Mishima, 1111 Yata, Mishima 411-8540 (Japan); Tsutsui, Yasuhiro [Department of Life Science, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Nagatsuda-cho, Midori-ku, Yokohama 226-8501 (Japan)] [Department of Life Science, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Nagatsuda-cho, Midori-ku, Yokohama 226-8501 (Japan); Yamao, Fumiaki [Division of Mutagenesis, National Institute of Genetics, Mishima, 1111 Yata, Mishima 411-8540 (Japan) [Division of Mutagenesis, National Institute of Genetics, Mishima, 1111 Yata, Mishima 411-8540 (Japan); The Graduate University for Advanced Studies, Sokendai, Mishima, 1111 Yata, Mishima 411-8540 (Japan); Kobayashi, Takehiko [Division of Cytogenetics, National Institute of Genetics, Mishima, 1111 Yata, Mishima 411-8540 (Japan) [Division of Cytogenetics, National Institute of Genetics, Mishima, 1111 Yata, Mishima 411-8540 (Japan); The Graduate University for Advanced Studies, Sokendai, Mishima, 1111 Yata, Mishima 411-8540 (Japan)

    2012-10-12

    Highlights: Black-Right-Pointing-Pointer RNAi is linked to the cell cycle checkpoint in fission yeast. Black-Right-Pointing-Pointer Ptr1 co-purifies with Ago1. Black-Right-Pointing-Pointer The ptr1-1 mutation impairs the checkpoint but does not affect gene silencing. Black-Right-Pointing-Pointer ago1{sup +} and ptr1{sup +} regulate the cell cycle checkpoint via the same pathway. Black-Right-Pointing-Pointer Mutations in ago1{sup +} and ptr1{sup +} lead to the nuclear accumulation of poly(A){sup +} RNAs. -- Abstract: Ago1, an effector protein of RNA interference (RNAi), regulates heterochromatin silencing and cell cycle arrest in fission yeast. However, the mechanism by which Ago1 controls cell cycle checkpoint following hydroxyurea (HU) treatment has not been elucidated. In this study, we show that Ago1 and other RNAi factors control cell cycle checkpoint following HU treatment via a mechanism independent of silencing. While silencing requires dcr1{sup +}, the overexpression of ago1{sup +} alleviated the cell cycle defect in dcr1{Delta}. Ago1 interacted with the mRNA export factor, Ptr1. The ptr1-1 mutation impaired cell cycle checkpoint but gene silencing was unaffected. Genetic analysis revealed that the regulation of cell cycle checkpoint by ago1{sup +} is dependent on ptr1{sup +}. Nuclear accumulation of poly(A){sup +} RNAs was detected in mutants of ago1{sup +} and ptr1{sup +}, suggesting there is a functional link between the cell cycle checkpoint and RNAi-mediated RNA quality control.

  5. Decreased expression of RNA interference machinery, Dicer and Drosha, is associated with poor outcome in ovarian cancer patients

    SciTech Connect (OSTI)

    Merritt, William M.; Lin, Yvonne G.; Han, Liz Y.; Kamat, Aparna A.; Spannuth, Whitney A.; Schmandt, Rosemarie; Urbauer, Diana; Pennacchio, Len A.; Cheng, Jan-Fang; Zeidan, Alexandra; Wang, Hua; Mueller, Peter; Lenburg, Marc E.; Gray, Joe W.; Mok, Samuel; Birrer, Michael J.; Lopez-Berestein, Gabriel; Coleman, Robert L.; Bar-Eli, Menashe; Sood, Anil K.

    2008-05-06

    The clinical and functional significance of RNA interference (RNAi) machinery, Dicer and Drosha, in ovarian cancer is not known and was examined. Dicer and Drosha expression was measured in ovarian cancer cell lines (n=8) and invasive epithelial ovarian cancer specimens (n=111) and correlated with clinical outcome. Validation was performed with previously published cohorts of ovarian, breast, and lung cancer patients. Anti-Galectin-3 siRNA and shRNA transfections were used for in vitro functional studies. Dicer and Drosha mRNA and protein levels were decreased in 37% to 63% of ovarian cancer cell lines and in 60% and 51% of human ovarian cancer specimens, respectively. Low Dicer was significantly associated with advanced tumor stage (p=0.007), and low Drosha with suboptimal surgical cytoreduction (p=0.02). Tumors with both high Dicer and Drosha were associated with increased median patient survival (>11 years vs. 2.66 years for other groups; p<0.001). In multivariate analysis, high Dicer (HR=0.48; p=0.02), high-grade histology (HR=2.46; p=0.03), and poor chemoresponse (HR=3.95; p<0.001) were identified as independent predictors of disease-specific survival. Findings of poor clinical outcome with low Dicer expression were validated in separate cohorts of cancer patients. Galectin-3 silencing with siRNA transfection was superior to shRNA in cell lines with low Dicer (78-95% vs. 4-8% compared to non-targeting sequences), and similar in cell lines with high Dicer. Our findings demonstrate the clinical and functional impact of RNAi machinery alterations in ovarian carcinoma and support the use of siRNA constructs that do not require endogenous Dicer and Drosha for therapeutic applications.

  6. Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H-NbSe?

    SciTech Connect (OSTI)

    Arguello, C. J. [Columbia Univ., New York, NY (United States); Valla, T. [Brookhaven National Lab. (BNL), Upton, NY (United States); Rosenthal, E. P. [Columbia Univ., New York, NY (United States); Andrade, E. F. [Columbia Univ., New York, NY (United States); Jin, W. [Columbia Univ., New York, NY (United States); Yeh, P. C. [Columbia Univ., New York, NY (United States); Zaki, N. [Columbia Univ., New York, NY (United States); Jia, S. [Princeton Univ., NJ (United States); Cava, R. J. [Princeton Univ., NJ (United States); Fernandes, R. M. [Univ., of Minnesota, Minneapolis, MN (United States); Millis, A. J. [Columbia Univ., New York, NY (United States); Osgood, Jr., R. M. [Columbia Univ., New York, NY (United States); Princeton Univ., Princeton, NJ (United States); Pasupathy, A. N. [Columbia Univ., New York, NY (United States)

    2015-01-01

    We show that a small number of intentionally introduced defects can be used as a spectroscopic tool to amplify quasiparticle interference in 2H-NbSe?, that we measure by scanning tunneling spectroscopic imaging. We show from the momentum and energy dependence of the quasiparticle interference that Fermi surface nesting is inconsequential to charge density wave formation in 2H-NbSe?. We demonstrate that by combining quasiparticle interference data with additional knowledge of the quasiparticle band structure from angle resolved photoemission measurements, one can extract the wavevector and energy dependence of the important electronic scattering processes thereby obtaining direct information both about the fermiology and the interactions. In 2H-NbSe?, we use this combination to show that the important near-Fermi-surface electronic physics is dominated by the coupling of the quasiparticles to soft mode phonons at a wave vector different from the CDW ordering wave vector.

  7. Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H-NbSe?

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

    Arguello, C. J.; Valla, T.; Rosenthal, E. P.; Andrade, E. F.; Jin, W.; Yeh, P. C.; Zaki, N.; Jia, S.; Cava, R. J.; Fernandes, R. M.; et al

    2015-01-20

    We show that a small number of intentionally introduced defects can be used as a spectroscopic tool to amplify quasiparticle interference in 2H-NbSe?, that we measure by scanning tunneling spectroscopic imaging. We show from the momentum and energy dependence of the quasiparticle interference that Fermi surface nesting is inconsequential to charge density wave formation in 2H-NbSe?. We demonstrate that by combining quasiparticle interference data with additional knowledge of the quasiparticle band structure from angle resolved photoemission measurements, one can extract the wavevector and energy dependence of the important electronic scattering processes thereby obtaining direct information both about the fermiology andmore »the interactions. In 2H-NbSe?, we use this combination to show that the important near-Fermi-surface electronic physics is dominated by the coupling of the quasiparticles to soft mode phonons at a wave vector different from the CDW ordering wave vector.« less

  8. Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H-NbSe?

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

    Arguello, C. J. [Columbia Univ., New York, NY (United States); Valla, T. [Brookhaven National Lab. (BNL), Upton, NY (United States); Rosenthal, E. P. [Columbia Univ., New York, NY (United States); Andrade, E. F. [Columbia Univ., New York, NY (United States); Jin, W. [Columbia Univ., New York, NY (United States); Yeh, P. C. [Columbia Univ., New York, NY (United States); Zaki, N. [Columbia Univ., New York, NY (United States); Jia, S. [Princeton Univ., NJ (United States); Cava, R. J. [Princeton Univ., NJ (United States); Fernandes, R. M. [Univ., of Minnesota, Minneapolis, MN (United States); Millis, A. J. [Columbia Univ., New York, NY (United States); Osgood, Jr., R. M. [Columbia Univ., New York, NY (United States); Princeton Univ., Princeton, NJ (United States); Pasupathy, A. N. [Columbia Univ., New York, NY (United States)

    2015-01-01

    We show that a small number of intentionally introduced defects can be used as a spectroscopic tool to amplify quasiparticle interference in 2H-NbSe?, that we measure by scanning tunneling spectroscopic imaging. We show from the momentum and energy dependence of the quasiparticle interference that Fermi surface nesting is inconsequential to charge density wave formation in 2H-NbSe?. We demonstrate that by combining quasiparticle interference data with additional knowledge of the quasiparticle band structure from angle resolved photoemission measurements, one can extract the wavevector and energy dependence of the important electronic scattering processes thereby obtaining direct information both about the fermiology and the interactions. In 2H-NbSe?, we use this combination to show that the important near-Fermi-surface electronic physics is dominated by the coupling of the quasiparticles to soft mode phonons at a wave vector different from the CDW ordering wave vector.

  9. Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H–NbSe2

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

    Arguello, C. J.; Rosenthal, E. P.; Andrade, E. F.; Jin, W.; Yeh, P. C.; Zaki, N.; Jia, S.; Cava, R. J.; Fernandes, R. M.; Millis, A. J.; et al

    2015-01-21

    We show that a small number of intentionally introduced defects can be used as a spectroscopic tool to amplify quasiparticle interference in 2H-NbSe?, that we measure by scanning tunneling spectroscopic imaging. We show from the momentum and energy dependence of the quasiparticle interference that Fermi surface nesting is inconsequential to charge density wave formation in 2H-NbSe?. Thus, we demonstrate that by combining quasiparticle interference data with additional knowledge of the quasiparticle band structure from angle resolved photoemission measurements, one can extract the wavevector and energy dependence of the important electronic scattering processes thereby obtaining direct information both about the fermiologymore »and the interactions. In 2H-NbSe?, we use this combination to show that the important near-Fermi-surface electronic physics is dominated by the coupling of the quasiparticles to soft mode phonons at a wave vector different from the CDW ordering wave vector.« less

  10. Superconductive quantum interference magnetometer with high sensitivity achieved by an induced resonance

    SciTech Connect (OSTI)

    Vettoliere, A.; Granata, C.

    2014-08-15

    A fully integrated low noise superconducting quantum interference device (SQUID) in a magnetometer configuration is presented. An intrinsic high voltage responsivity as high as 500 ?V/?{sub 0} has been obtained by introducing a resonance in the voltage – magnetic flux characteristic. This resonance is induced by an integrated superconducting coil surrounding the pick-up coil and connected to one end of the SQUID output. The SQUID magnetometer exhibits a spectral density of magnetic field noise as low as 3 fT/Hz{sup 1/2}. In order to verify the suitability of the magnetometer, measurements of bandwidth and slew rate have been performed and compared with those of the same device without the resonance and with additional positive feedback. Due to their good characteristics such devices can be employed in a large number of applications including biomagnetism.

  11. Decoherence and Quantum Interference assisted electron trapping in a quantum dot

    E-Print Network [OSTI]

    Ahmed El Halawany; Michael N. Leuenberger

    2013-08-08

    We present a theoretical model for the dynamics of an electron that gets trapped by means of decoherence and quantum interference in the central quantum dot (QD) of a semiconductor nanoring (NR) made of five QDs, between 100 K and 300 K. The electron's dynamics is described by a master equation with a Hamiltonian based on the tight-binding model, taking into account electron-LO phonon interaction (ELOPI). Based on this configuration, the probability to trap an electron with no decoherence is almost 27%. In contrast, the probability to trap an electron with decoherence is 70% at 100 K, 63% at 200 K and 58% at 300 K. Our model provides a novel method of trapping an electron at room temperature.

  12. Preliminary analyses of scenarios for potential human interference for repositories in three salt formations

    SciTech Connect (OSTI)

    Not Available

    1985-10-01

    Preliminary analyses of scenarios for human interference with the performance of a radioactive waste repository in a deep salt formation are presented. The following scenarios are analyzed: (1) the U-Tube Connection Scenario involving multiple connections between the repository and the overlying aquifer system; (2) the Single Borehole Intrusion Scenario involving penetration of the repository by an exploratory borehole that simultaneously connects the repository with overlying and underlying aquifers; and (3) the Pressure Release Scenario involving inflow of water to saturate any void space in the repository prior to creep closure with subsequent release under near lithostatic pressures following creep closure. The methodology to evaluate repository performance in these scenarios is described and this methodology is applied to reference systems in three candidate formations: bedded salt in the Palo Duro Basin, Texas; bedded salt in the Paradox Basin, Utah; and the Richton Salt Dome, Mississippi, of the Gulf Coast Salt Dome Basin.

  13. Decentralized Delay Optimal Control for Interference Networks with Limited Renewable Energy Storage

    E-Print Network [OSTI]

    Huang, Huang

    2012-01-01

    In this paper, we consider delay minimization for interference networks with renewable energy source, where the transmission power of a node comes from both the conventional utility power (AC power) and the renewable energy source. We assume the transmission power of each node is a function of the local channel state, local data queue state and local energy queue state only. In turn, we consider two delay optimization formulations, namely the decentralized partially observable Markov decision process (DEC-POMDP) and Non-cooperative partially observable stochastic game (POSG). In DEC-POMDP formulation, we derive a decentralized online learning algorithm to determine the control actions and Lagrangian multipliers (LMs) simultaneously, based on the policy gradient approach. Under some mild technical conditions, the proposed decentralized policy gradient algorithm converges almost surely to a local optimal solution. On the other hand, in the non-cooperative POSG formulation, the transmitter nodes are non-cooperat...

  14. Plume configuration and plume recirculation/interference of the Vienna cooling towers

    SciTech Connect (OSTI)

    Jain, S.C.; Kennedy, J.F.

    1980-12-01

    The objective of the laboratory model investigation reported herein was to study the behavior of the effluent plumes from the existing and proposed mechanical draft wet cooling towers at the Vienna power plant. Included in the study are plume recirculation and interference of the existing rectangular tower and the proposed round tower as well as effects on plume behavior of the power plant buildings and the coal pile. The study results can be utilized to determine the visible plume boundaries and cooling tower stack effluent concentration distributions for various meteorological and power plant operating conditions. The results can then be used to determine whether or not the plumes will cause fogging or icing on the proposed Route 50 bypass. Tests were conducted for several wind speeds and for the prevailing winter and summer wind directions.

  15. Generation of continuous-wave THz radiation by use of quantum interference

    E-Print Network [OSTI]

    E. A. Korsunsky; D. V. Kosachiov

    1999-12-13

    We propose a scheme for generation of continuous-wave THz radiation. The scheme requires a medium where three discrete states in a $\\Lambda $ configuration can be selected, with the THz-frequency transition between the two lower metastable states. We consider the propagation of three-frequency continuous-wave electromagnetic (e.m.) radiation through a $\\Lambda $ medium. Under resonant excitation, the medium absorption can be strongly reduced due to quantum interference of transitions, while the nonlinear susceptibility is enhanced. This leads to very efficient energy transfer between the e.m. waves providing a possibility for THz generation. We demonstrate that the photon conversion efficiency is approaching unity in this technique.

  16. Optical transmission modules for multi-channel superconducting quantum interference device readouts

    SciTech Connect (OSTI)

    Kim, Jin-Mok Kwon, Hyukchan; Yu, Kwon-kyu; Lee, Yong-Ho; Kim, Kiwoong

    2013-12-15

    We developed an optical transmission module consisting of 16-channel analog-to-digital converter (ADC), digital-noise filter, and one-line serial transmitter, which transferred Superconducting Quantum Interference Device (SQUID) readout data to a computer by a single optical cable. A 16-channel ADC sent out SQUID readouts data with 32-bit serial data of 8-bit channel and 24-bit voltage data at a sample rate of 1.5 kSample/s. A digital-noise filter suppressed digital noises generated by digital clocks to obtain SQUID modulation as large as possible. One-line serial transmitter reformed 32-bit serial data to the modulated data that contained data and clock, and sent them through a single optical cable. When the optical transmission modules were applied to 152-channel SQUID magnetoencephalography system, this system maintained a field noise level of 3 fT/?Hz @ 100 Hz.

  17. Assessment and Mitigation of Diagnostic-Generated Electromagnetic Interference at the National Ignition Facility

    SciTech Connect (OSTI)

    Brown, C G; Ayers, M J; Felker, B; Ferguson, W; Holder, J P; Nagel, S R; Piston, K W; Simanovskaia, N; Throop, A L; Chung, M; Hilsabeck, T

    2012-04-20

    Electromagnetic interference (EMI) is an ever-present challenge at laser facilities such as the National Ignition Facility (NIF). The major source of EMI at such facilities is laser-target interaction that can generate intense electromagnetic fields within, and outside of, the laser target chamber. In addition, the diagnostics themselves can be a source of EMI, even interfering with themselves. In this paper we describe EMI generated by ARIANE and DIXI, present measurements, and discuss effects of the diagnostic-generated EMI on ARIANE's CCD and on a PMT nearby DIXI. Finally we present some of the efforts we have made to mitigate the effects of diagnostic-generated EMI on NIF diagnostics.

  18. A cryogen-free ultralow-field superconducting quantum interference device magnetic resonance imaging system

    SciTech Connect (OSTI)

    Eom, Byeong Ho; Penanen, Konstantin; Hahn, Inseob, E-mail: ihahn@caltech.edu [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 (United States)

    2014-09-15

    Magnetic resonance imaging (MRI) at microtesla fields using superconducting quantum interference device (SQUID) detection has previously been demonstrated, and advantages have been noted. Although the ultralow-field SQUID MRI technique would not need the heavy superconducting magnet of conventional MRI systems, liquid helium required to cool the low-temperature detector still places a significant burden on its operation. We have built a prototype cryocooler-based SQUID MRI system that does not require a cryogen. The SQUID detector and the superconducting gradiometer were cooled down to 3.7 K and 4.3 K, respectively. We describe the prototype design, characterization, a phantom image, and areas of further improvements needed to bring the imaging performance to parity with conventional MRI systems.

  19. Superconducting quantum interference device microsusceptometer balanced over a wide bandwidth for nuclear magnetic resonance applications

    SciTech Connect (OSTI)

    Vinante, A. Falferi, P.; Mezzena, R.

    2014-10-15

    Superconducting Quantum Interference Device (SQUID) microsusceptometers have been widely used to study magnetic properties of materials at microscale. As intrinsically balanced devices, they could also be exploited for direct SQUID-detection of nuclear magnetic resonance (NMR) from micron sized samples, or for SQUID readout of mechanically detected NMR from submicron sized samples. Here, we demonstrate a double balancing technique that enables achievement of very low residual imbalance of a SQUID microsusceptometer over a wide bandwidth. In particular, we can generate ac magnetic fields within the SQUID loop as large as 1 mT, for frequencies ranging from dc up to a few MHz. As an application, we demonstrate direct detection of NMR from {sup 1}H spins in a glycerol droplet placed directly on top of the 20 ?m SQUID loops.

  20. Return-on-investment indicators for energy program evaluation. Results of the technical review of TA reports and grant applications: Cycle VII - ICP. Final report

    SciTech Connect (OSTI)

    Not Available

    1985-09-17

    The state of Michigan technical review evaluted about forty-five grantees. The reviewers at the state level seem to have screened out bad submissions or illogical calculation sequences. Michigan reviewers were careful to a fault, and at times had gone through and recalculated many of the smaller energy savings ECM's so that the submission could in fact progress towards the federal level at an appropriate speed. The depth of analysis was very good and the coverage was certainly adequate. There were no submissions in the state of Michigan which warrant detailed commentary about their lack of any part of the submission. The state of Indiana had approximately 33 grantee submissions. The federal level technical review looked at each and every submission to see if it met criteria and calculation adequacy. In many cases the state of Indiana showed evidence of not having had adequate state review. Certainly there were no marks, corrections of any kind in most of the submitted documentation. It is apparent that the state of Indiana will warrant continuous evaluation over the next few cycles in order to upgrade their overall review of their grants. It is suggested that some help be given to the Indiana review agency. The technical reviewers for Cycle VII suggest a continuation of the review process for Indiana, and some additional support to aid them in the review function at the state level to insure that the state reviewers are not skimming the projects at an inadequate level.

  1. Outage and Capacity Analysis of Cellular CDMA With Admission Control

    E-Print Network [OSTI]

    Chockalingam, A.

    Outage and Capacity Analysis of Cellular CDMA With Admission Control S. AnandÝ , A. Chockalingam. Ltd., Bangalore, INDIA Abstract-- We analyze the outage and capacity performance of an interference based admission control strategy in cellular CDMA systems. Most approaches to estimate the outage

  2. Detection of Physics-based Ultra-wideband Signals Using Generalized RAKE in Presence of Inter-Symbol Interference

    E-Print Network [OSTI]

    Qiu, Robert Caiming

    Detection of Physics-based Ultra-wideband Signals Using Generalized RAKE in Presence of Inter-Symbol Interference John Qiang Zhang and Robert Caiming Qiu Abstract-- The generalized rake receiver based on physics rate. Index Terms-- Generalized rake receiver, Physics-based channel, Successive channel estimation

  3. Nash Bargaining over MIMO Interference Systems Zengmao Chen, Sergiy A. Vorobyov, Cheng-Xiang Wang, and John Thompson

    E-Print Network [OSTI]

    Wang, Cheng-Xiang

    Nash Bargaining over MIMO Interference Systems Zengmao Chen, Sergiy A. Vorobyov, Cheng-Xiang Wang condition for the uniqueness of the Nash bargaining (NB) solution. The structure of the source covariance with the covariance matrices leading to the Nash equilibrium (NE). The existence of the NB solution and concavity

  4. IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 59, NO. 1, JANUARY 2011 263 MIMO B-MAC Interference Network Optimization

    E-Print Network [OSTI]

    Liu, Youjian "Eugene"

    Network Optimization Under Rate Constraints by Polite Water-Filling and Duality An Liu, Student Member and SINR through the design of optimal mappings between them. The second approach exploits the polite water is analyzed in addition to numeric examples. Index Terms--Duality, MIMO, interference network, polite water

  5. Modulating unpolarized current in quantum spintronics: Visibility of spin-interference effects in multichannel Aharonov-Casher mesoscopic rings

    E-Print Network [OSTI]

    Nikolic, Branislav K.

    Modulating unpolarized current in quantum spintronics: Visibility of spin-interference effects. INTRODUCTION Recent attempts in spintronics1 to harness electron spin for classical and quantum information spintronic device, the Datta-Das spin-field-effect transistor4 (spin-FET) where current passing through a two

  6. Accepted for publication in Wireless Networks, Special Issue on Multiuser Detection in Wireless Communications Adaptive Power Control and MMSE Interference

    E-Print Network [OSTI]

    Yates, Roy

    with an acceptable quality of service while minimizing the total transmitter power. Multiuser detection on the other communication systems, iterative power control is used to provide each user with an acceptable level and interference. In [10], a framework was given for uplink power control for cellular radio systems. Variations

  7. Dual Mechanisms of Cognitive Control: Interference Effects on Working Memory are Modulated by Expectancy and Fluid Intelligence

    E-Print Network [OSTI]

    Burgess, Greg

    ), proactive control mechanisms preferred · Fluid Intelligence (gF) · Fluid intelligence possibly relatedDual Mechanisms of Cognitive Control: Interference Effects on Working Memory are Modulated by Expectancy and Fluid Intelligence Gregory C. Burgess and Todd S. Braver Department of Psychology , Washington

  8. Adjacent Channel Interference in Dual-radio 802.11a Nodes and Its Impact on Multi-hop Networking

    E-Print Network [OSTI]

    Kung, H. T.

    -mask requirements set by the IEEE 802.11 standard, the multi-hop performance is still significantly affected by ACI evaluate the performance impact of adjacent chan- nel interference (ACI) in multi-hop wireless networks a spectrum analyzer with a signal combiner to quantify ACI under various conditions and propose solutions

  9. 4558 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 6, NO. 12, DECEMBER 2007 An Interference Aware Distributed Resource

    E-Print Network [OSTI]

    Zhuang, Weihua

    4558 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 6, NO. 12, DECEMBER 2007 An Interference Aware Distributed Resource Management Scheme for CDMA-Based Wireless Mesh Backbone Hai Jiang, Member (consisting of a number of wireless routers at fixed sites). Specifically, benefiting from the fixed location

  10. Modification of the Hepatitis B Virus Envelope Protein Glycosylation Pattern Interferes with Secretion of Viral Particles, Infectivity, and

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    Modification of the Hepatitis B Virus Envelope Protein Glycosylation Pattern Interferes Transfusion Sanguine (INTS), Paris, France ABSTRACT The envelope proteins of hepatitis B virus (HBV) bear an N protein synthesis and stability and to secretion of subviral particles (SVPs) and hepatitis delta virus

  11. ON THE NOISY MIMO INTERFERENCE CHANNEL WITH CSI THROUGH ANALOG Francesco Negro, Dirk T.M. Slock

    E-Print Network [OSTI]

    Gesbert, David

    . This is because cellular communication systems, which are severely af- fected by intercell interference, can supported by its industrial members: ORANGE, BMW Group, Swisscom, Cisco, SFR, ST Ericsson, Symantec, SAP, Monaco Telecom, and also by the EU FET project CROWN and FP7 projects SACRA and WHERE2. The research

  12. Quantum Interference Control of Ballistic Pure Spin Currents in Semiconductors Martin J. Stevens and Arthur L. Smirl*

    E-Print Network [OSTI]

    Van Driel, Henry M.

    techniques have been employed [4­6] to achieve direct optical injection of spin currents without an external. In this Letter, by contrast, we report direct optical injection of a spin current that is not accompanied; published 4 April 2003) We demonstrate all-optical quantum interference injection and control of a ballistic

  13. Colloidal crystal growth monitored by Bragg diffraction interference fringes Justin J. Bohn, Alexander Tikhonov, Sanford A. Asher *

    E-Print Network [OSTI]

    Asher, Sanford A.

    Colloidal crystal growth monitored by Bragg diffraction interference fringes Justin J. Bohn), or glassy structures [1­9]. Surface- charged monodisperse colloidal particle suspensions will crystal- lize large single crystal domains [10­15]. The degree of CCA ordering depends on the colloidal particle size

  14. Ramsey Interference in One-Dimensional Systems: The Full Distribution Function of Fringe Contrast as a Probe of Many-Body Dynamics

    SciTech Connect (OSTI)

    Kitagawa, Takuya; Pielawa, Susanne; Demler, Eugene [Physics Department, Harvard University, Cambridge, Massachusetts 02138 (United States); Imambekov, Adilet [Department of Physics and Astronomy, Rice University, Houston, Texas 77005 (United States); Schmiedmayer, Joerg [Atominstitut, TU-Wien, Stadionallee 2, 1020 Vienna (Austria); Gritsev, Vladimir [Physics Department, University of Fribourg, Chemin du Musee 3, 1700 Fribourg (Switzerland)

    2010-06-25

    We theoretically analyze Ramsey interference experiments in one-dimensional quasicondensates and obtain explicit expressions for the time evolution of full distribution functions of fringe contrast. We show that distribution functions contain unique signatures of the many-body mechanism of decoherence. We argue that Ramsey interference experiments provide a powerful tool for analyzing strongly correlated nature of 1D interacting systems.

  15. The Low-Frequency Environment of the Murchison Widefield Array: Radio-Frequency Interference Analysis and Mitigation

    E-Print Network [OSTI]

    Cappallo, Roger J.

    The Murchison Widefield Array is a new low-frequency interferometric radio telescope built in Western Australia at one of the locations of the future Square Kilometre Array. We describe the automated radio-frequency ...

  16. When lexical selection gets tough, the LIFG gets going: A lesion analysis study of interference during word production q

    E-Print Network [OSTI]

    Thompson-Schill, Sharon

    during word production q T.T. Schnur a,b,*, E. Lee a , H.B. Coslett a,b , M.F. Schwartz a , S.L. Thompson­19); and months post-onset 63 (10­175). Procedures Blocked-cyclic naming Stimuli were 72 line drawings depicting boundaries onto a standard MNI template. Using MRIcro's Automated Anatomical Labeling map, we defined two

  17. Quantum Interference Induced Photon Blockade in a Coupled Single Quantum Dot-Cavity System

    E-Print Network [OSTI]

    Tang, Jing; Xu, Xiulai

    2015-01-01

    We propose an experimental scheme to implement a strong photon blockade with a single quantum dot coupled to a nanocavity. The photon blockade effect can be tremendously enhanced by driving the cavity and the quantum dot simultaneously with two classical laser fields. This enhancement of photon blockade is ascribed to the quantum interference effect to avoid two-photon excitation of the cavity field. Comparing with Jaynes-Cummings model, the second-order correlation function at zero time delay $g^{(2)}(0)$ in our scheme can be reduced by two orders of magnitude and the system sustains a large intracavity photon number. A red (blue) cavity-light detuning asymmetry for photon quantum statistics with bunching or antibunching characteristics is also observed. The photon blockade effect has a controllable flexibility by tuning the relative phase between the two pumping laser fields and the Rabi coupling strength between the quantum dot and the pumping field. Moreover, the photon blockade scheme based on quantum in...

  18. Soft holographic interference lithography microlens for enhanced organic light emitting diode light extraction

    SciTech Connect (OSTI)

    Park, Joong-Mok; Gan, Zhengqing; Leung, Wai Y.; Liu, Rui; Ye, Zhuo; Constant, Kristen; Shinar, Joseph; Shinar, Ruth; Ho, Kai-Ming

    2011-06-06

    Very uniform 2 {micro}m-pitch square microlens arrays ({micro}LAs), embossed on the blank glass side of an indium-tin-oxide (ITO)-coated 1.1 mm-thick glass, are used to enhance light extraction from organic light-emitting diodes (OLEDs) by {approx}100%, significantly higher than enhancements reported previously. The array design and size relative to the OLED pixel size appear to be responsible for this enhancement. The arrays are fabricated by very economical soft lithography imprinting of a polydimethylsiloxane (PDMS) mold (itself obtained from a Ni master stamp that is generated from holographic interference lithography of a photoresist) on a UV-curable polyurethane drop placed on the glass. Green and blue OLEDs are then fabricated on the ITO to complete the device. When the {mu}LA is {approx}15 x 15 mm{sup 2}, i.e., much larger than the {approx}3 x 3 mm{sup 2} OLED pixel, the electroluminescence (EL) in the forward direction is enhanced by {approx}100%. Similarly, a 19 x 25 mm{sup 2} {mu}LA enhances the EL extracted from a 3 x 3 array of 2 x 2 mm{sup 2} OLED pixels by 96%. Simulations that include the effects of absorption in the organic and ITO layers are in accordance with the experimental results and indicate that a thinner 0.7 mm thick glass would yield a {approx}140% enhancement.

  19. Dynamics of fast pattern formation in porous silicon by laser interference

    SciTech Connect (OSTI)

    Peláez, Ramón J.; Kuhn, Timo; Afonso, Carmen N. [Laser Processing Group, Instituto de Óptica, CSIC, Serrano 121, 28006 Madrid (Spain); Vega, Fidel [Departament d'Òptica i Optometria, UPC, Violinista Vellsolà 37, 08222 Terrasa (Spain)

    2014-10-20

    Patterns are fabricated on 290?nm thick nanostructured porous silicon layers by phase-mask laser interference using single pulses of an excimer laser (193?nm, 20?ns pulse duration). The dynamics of pattern formation is studied by measuring in real time the intensity of the diffraction orders 0 and 1 at 633?nm. The results show that a transient pattern is formed upon melting at intensity maxima sites within a time <30?ns leading to a permanent pattern in a time <100?ns upon solidification at these sites. This fast process is compared to the longer one (>1??s) upon melting induced by homogeneous beam exposure and related to the different scenario for releasing the heat from hot regions. The diffraction efficiency of the pattern is finally controlled by a combination of laser fluence and initial thickness of the nanostructured porous silicon layer and the present results open perspectives on heat release management upon laser exposure as well as have potential for alternative routes for switching applications.

  20. Effect of interference on thermal noise and coating optimization in dielectric mirrors

    E-Print Network [OSTI]

    N. M. Kondratiev; A. G. Gurkovsky; M. L. Gorodetsky

    2011-02-18

    Optical multilayer coatings of high-reflective mirrors significantly determine the properties of Fabry-Perot resonators. Thermal (Brownian) noise in these coatings produce excess phase noise which can seriously degrade the sensitivity of high-precision measurements with these cavities, in particular in laser gravitational-wave antennas (for example project LIGO), where at the current stage it is one of the main limiting factors. We present a method to calculate this effect accurately and analyze different strategies to diminish it by optimizing the coating. Traditionally this noise is calculated as if the beam is reflected from the surface of the mirror fluctuating due to the sums of the fluctuations of each layer. However the beam in fact penetrates a coating and Brownian expansion of the layers leads to dephasing of interference in the coating and consequently to additional change in reflected phase. Fluctuations in the thickness of a layer change the strain in the medium and hence due to photoelastic effect change the refractive index of this layer. This additional effect should be also considered. It is possible to make the noise smaller preserving the reflectivity by changing the total number of layers and thicknesses of high and low refractive ones. We show how this optimized coating may be constructed analytically rather then numerically as before. We also check the possibility to use internal resonant layers and optimized cap layer to decrease the thermal noise.

  1. Oberseminar -ICP Temperature Calculation for Tribological

    E-Print Network [OSTI]

    Harting, Jens

    and passing to third parties. 0 #12;Overview Where to calculate the heat: diesel injection pump First focus in the steel in the meantime of one step It takes some rotations to have the heat penetrate the whole pump even in the event of industrial property rights. We reserve all rights of disposal such as copying

  2. Microsoft Word - ICP CX determinaton.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework uses concrete7 Assessment of the Performance of3293 Unlimited

  3. Direct periodic patterning of GaN-based light-emitting diodes by three-beam interference laser ablation

    SciTech Connect (OSTI)

    Kim, Jeomoh; Ji, Mi-Hee; Detchprohm, Theeradetch; Yuan, Dajun; Guo, Rui; Liu, Jianping; Asadirad, Mojtaba; Kwon, Min-Ki; Dupuis, Russell D.; Das, Suman; Ryou, Jae-Hyun

    2014-04-07

    We report on the direct patterning of two-dimensional periodic structures in GaN-based light-emitting diodes (LEDs) through laser interference ablation for the fast and reliable fabrication of periodic micro- and nano-structures aimed at enhancing light output. Holes arranged in a two-dimensional hexagonal lattice array having an opening size of 500?nm, depth of 50?nm, and a periodicity of 1??m were directly formed by three-beam laser interference without photolithography or electron-beam lithography processes. The laser-patterned LEDs exhibit an enhancement in light output power of 20% compared to conventional LEDs having a flat top surface without degradation of electrical and optical properties of the top p-GaN layer and the active region, respectively.

  4. Scanning angle Raman spectroscopy: Investigation of Raman scatter enhancement techniques for chemical analysis

    SciTech Connect (OSTI)

    Meyer, Matthew W.

    2013-03-14

    This thesis outlines advancements in Raman scatter enhancement techniques by applying evanescent fields, standing-waves (waveguides) and surface enhancements to increase the generated mean square electric field, which is directly related to the intensity of Raman scattering. These techniques are accomplished by employing scanning angle Raman spectroscopy and surface enhanced Raman spectroscopy. A 1064 nm multichannel Raman spectrometer is discussed for chemical analysis of lignin. Extending dispersive multichannel Raman spectroscopy to 1064 nm reduces the fluorescence interference that can mask the weaker Raman scattering. Overall, these techniques help address the major obstacles in Raman spectroscopy for chemical analysis, which include the inherently weak Raman cross section and susceptibility to fluorescence interference.

  5. Analysis of CZT crystals and detectors grown in Russia and the Ukraine by high-pressure Bridgman methods

    SciTech Connect (OSTI)

    H. Hermon; M. Schieber; R. B. James; E. Y. Lee; N. Yang; A. J. Antolak; D. H. Morse; C. Hackett; E. Tarver; N. N. P. Kolesnikov; Yu N. Ivanov; V. Komar; M. S. Goorsky; H. Yoon

    2000-01-10

    Sandia National Laboratories (SNL) is leading an effort to evaluate vertical high pressure Bridgman (VHPB) Cd{sub 1-x}Zn{sub x}Te (CZT) crystals grown in the former Soviet Union (FSU) (Ukraine and Russia), in order to study the parameters limiting the crystal quality and the radiation detector performance. The stoichiometry of the CZT crystals, with 0.04 < x < 0.25, has been determined by methods such as proton-induced X-ray emission (PIXE), X-ray diffraction (XRD), microprobe analysis and laser ablation ICP mass spectroscopy (LA-ICP/MS). Other methods such as triaxial double crystal x-ray diffraction (TADXRD), infrared transmission spectroscopy (IR), atomic force microscopy (AFM), thermoelectric emission spectroscopy (TEES) and laser induced transient charge technique (TCT) were also used to evaluate the material properties. The authors have measured the zinc distribution in a CZT ingot along the axial direction and also its homogeneity. The (Cd+Zn)/Te average ratio measured on the Ukraine crystals was 1.2, compared to the ratio of 0.9-1.06 on the Russian ingots. The IR transmission showed highly decorated grain boundaries with precipitates and hollow bubbles. Microprobe elemental analysis and LA-ICP/MS showed carbon precipitates in the CZT bulk and carbon deposits along grain boundaries. The higher concentration of impurities and the imperfect crystallinity lead to shorter electron and hole lifetimes in the range of 0.5--2 {micro}s and 0.1 {micro}s respectively, compared to 3--20 {micro}s and 1--7 {micro}s measured on US spectrometer grade CZT detectors. These results are consistent with the lower resistivity and worse crystalline perfection of these crystals, compared to US grown CZT. However, recently grown CZT from FSU exhibited better detector performance and good response to alpha particles.

  6. Analysis of CZT crystals and detectors grown in Russia and the Ukraine by high-pressure Bridgman methods

    SciTech Connect (OSTI)

    Hermon, H.; Schieber, M. [Sandia National Labs., Livermore, CA (United States)]|[Hebrew Univ., Jerusalem (Israel); James, R.B. [Sandia National Labs., Livermore, CA (United States)] [and others

    1999-06-01

    Sandia National Laboratories (SNL) is leading an effort to evaluate vertical high pressure Bridgman (VHPB) Cd{sub 1{minus}x}Zn{sub x}Te (CZT) crystals grown in the former Soviet Union (FSU) (Ukraine and Russia), in order to study the parameters limiting the crystal quality and the radiation detector performance. The stoichiometry of the CZT crystals, with 0.04 < x < 0.25, has been determined by methods such as proton-induced x-ray emission (PIXE), x-ray diffraction (XRD), microprobe analysis and laser ablation ICP mass spectroscopy (LA-ICP/MS). Other methods such as triaxial double crystal x-ray diffraction (TADXRD), infrared transmission spectroscopy (IR), atomic force microscopy (AFM), thermoelectric emission spectroscopy (TEES) and laser induced transient charge technique (TCT) were also used to evaluate the material properties. The authors have measured the zinc distribution in a CZT ingot along the axial direction and also its homogeneity. The (Cd+Zn)/Te average ratio measured on the Ukraine crystals was 1.2, compared to the ratio of 0.9--1.06 on the Russian ingots. The IR transmission showed highly decorated grain boundaries with precipitates and hollow bubbles. Microprobe elemental analysis and LA-ICP/MS showed carbon precipitates in the CZT bulk and carbon deposits along grain boundaries. The higher concentration of impurities and the imperfect crystallinity lead to shorter electron and hole lifetimes in the range of 0.5--2 and 0.1 {micro}s, respectively, compared to 3--20 and 1--7 {micro}s measured on US spectrometer grade CZT detectors. These results are consistent with the lower resistivity and worse crystalline perfection of these crystals, compared to US-grown CZT. However, recently grown CZT from FSU exhibited better detector performance and good response to alpha particles.

  7. A unified Fano-like interference picture for charmonium-like states $Y(4008)$, $Y(4260)$ and $Y(4360)$

    E-Print Network [OSTI]

    Chen, Dian-Yong; Li, Xue-Qian; Ke, Hong-Wei

    2015-01-01

    We propose that the unified Fano-like interference picture applies to $e^+e^-\\to \\pi^+\\pi^- J/\\psi$ and $e^+e^-\\to \\pi^+\\pi^- \\psi(3686)$, where $Y(4260)$ and $Y(4360)$ are observed, respectively, to provide a reasonable interpretation of the asymmetric lineshapes of $Y(4260)$ and $Y(4360)$ structures. Moreover, the Fano-like interference induces an extra broad structure $Y(4008)$ in $e^+e^-\\to \\pi^+\\pi^- J/\\psi$ as a companion peak to $Y(4260)$. Three charmonium-like states $Y(4008)$, $Y(4260)$ and $Y(4360)$ observed in $e^+e^-$ annihilation processes are not genuine resonances. Under this scenario, it is well explained why $Y(4008)$, $Y(4260)$ and $Y(4360)$ are absent in the experimental data of the $R$ value scan and missing in open-charm decay channels. Although the present work presents the a typical application of the Fano-like interference in the particle physics at the lower energy region, we have reason to believe that the Fano-like phenomena may exist in other processes such as $e^+e^-\\to \\pi^+\\pi^-...

  8. Inhibition of hepatitis B virus (HBV) by LNA-mediated nuclear interference with HBV DNA transcription

    SciTech Connect (OSTI)

    Sun, Zhen; Department of Biochemistry and Molecular Biology, Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058 ; Xiang, Wenqing; Guo, Yajuan; Chen, Zhi; Liu, Wei; Lu, Daru

    2011-06-10

    Highlights: {yields} LNA-modified oligonucleotides can pass through the plasma membrane of cultured cells even without using transfection machinery. {yields} LNA-modified oligonucleotides passed efficiently across the cell membrane, and lipid-coating facilitated translocation from the cytoplasm to the nucleus. {yields} LNA-oligonucleotide designed to target nuclear HBV DNA efficiently suppresses HBV replication and transcription in cultured hepatic cells. -- Abstract: Silencing target genes with small regulatory RNAs is widely used to investigate gene function and therapeutic drug development. Recently, triplex-based approaches have provided another attractive means to achieve targeted gene regulation and gene manipulation at the molecular and cellular levels. Nuclear entry of oligonucleotides and enhancement of their affinity to the DNA targets are key points of such approaches. In this study, we developed lipid-based transport of a locked-nucleic-acid (LNA)-modified oligonucleotide for hepatitis B virus (HBV) DNA interference in human hepatocytes expressing HBV genomic DNA. In these cells, the LNA-modified oligonucleotides passed efficiently across the cell membrane, and lipid-coating facilitated translocation from the cytoplasm to the nucleus. The oligonucleotide specifically targeting HBV DNA clearly interfered with HBV DNA transcription as shown by a block in pregenomic RNA (pgRNA) production. The HBV DNA-targeted oligonucleotide suppressed HBV DNA replication and HBV protein production more efficiently than small interfering RNAs directed to the pgRNA. These results demonstrate that fusion with lipid can carry LNA-modified oligonucleotides to the nucleus where they regulate gene expression. Interfering with HBV DNA transcription by LNA-modified oligonucleotides has strong potential as a new strategy for HBV inhibition.

  9. Nondestructive fission gas release measurement and analysis

    SciTech Connect (OSTI)

    O'Leary, P.M.; Packard, D.R. (Siemens Nuclear Power Corp., Richland, WA (United States))

    1993-01-01

    Siemens Power Corporation (SPC) has performed reactor poolside gamma scanning measurements of fuel rods for fission gas release (FGR) detection for more than 10 yr. The measurement system has been previously described. Over the years, the data acquisition system, the method of spectrum analysis, and the means of reducing spectrum interference have been significantly improved. A personal computer (PC)-based multichannel analyzer (MCA) package is used to collect, display, and store high-resolution gamma-ray spectra measured in the fuel rod plenum. A PC spread sheet is used to fit the measured spectra and compute sample count rates after Compton background subtraction. A Zircaloy plenum spacer is often used to reduce positron annihilation interference that can arise from the INCONEL[sup [reg sign

  10. Light Vector Meson Photoproduction off of 1H at Jefferson Lab and p-w Interference in the Leptonic Decay Channel

    SciTech Connect (OSTI)

    Djalali, Chaden; Paolone, Michael; Weygand, Dennis; Wood, Mike H.

    2014-09-01

    Although the phenomena of r – w interference has been studied at great length in pionic decay channel over the past 50 years, a study of the interference in a purely electromagnetic production and decay channel has never been performed on an elementary proton target until now. The only published photo-production data of the r - w leptonic decay channel was obtained in the early seventies on C and Be. An investigation of the r - w interference on a Hydrogen was recently completed at Jefferson Lab with the CLAS detector. The di-lepton spectra was fit with two inter- fering relativistic Breit-Wigner functions, and the interference phase was extracted. Preliminary results will be compared to the previous experimental studies in nuclei.

  11. Possible realization of entanglement, logical gates, and quantum-information transfer with superconducting-quantum-interference-device qubits in cavity QED

    E-Print Network [OSTI]

    Yang, Chui-Ping; Chu, Shih-I; Han, Siyuan

    2003-04-17

    We present a scheme to achieve maximally entangled states, controlled phase-shift gate, and SWAP gate for two superconducting-quantum-interference-device (SQUID) qubits, by placing SQUIDs in a microwave cavity. We also show how to transfer quantum...

  12. An energy relaxation tolerant approach to quantum entanglement, information transfer, and gates with superconducting-quantum-interference-device qubits in cavity QED

    E-Print Network [OSTI]

    Yang, Chui-Ping; Chu, Shih-I; Han, Siyuan

    2004-03-31

    A scheme is proposed for realizing quantum entanglement, information transfer, CNOT gates, and SWAP gates with supercoiiducting-quantum-interference-device (SQUID) qubits in cavity QED. In the scheme, the two logical states of a qubit are the two...

  13. Prostate Brachytherapy With Oblique Needles to Treat Large Glands and Overcome Pubic Arch Interference

    SciTech Connect (OSTI)

    Ryu, Bon; Imaging Research Laboratories, Robarts Research Institute, University of Western Ontario, London, Ontario ; Bax, Jeff; Imaging Research Laboratories, Robarts Research Institute, University of Western Ontario, London, Ontario ; Edirisinge, Chandima; Lewis, Craig; Chen, Jeff; D'Souza, David; Radiation Treatment Program, London Regional Cancer Program, London Health Sciences Centre, London, Ontario ; Fenster, Aaron; Department of Medical Biophysics, University of Western Ontario, London, Ontario; Department of Biomedical Engineering, University of Western Ontario, London, Ontario; Imaging Research Laboratories, Robarts Research Institute, University of Western Ontario, London, Ontario; Department of Oncology, University of Western Ontario, London, Ontario ; Wong, Eugene; Department of Medical Biophysics, University of Western Ontario, London, Ontario; Department of Oncology, University of Western Ontario, London, Ontario

    2012-08-01

    Purpose: First, to show that low-dose-rate prostate brachytherapy plans using oblique needle trajectories are more successful than parallel trajectories for large prostates with pubic arch interference (PAI); second, to test the accuracy of delivering an oblique plan by using a three-dimensional (3D) transrectal ultrasonography (TRUS)-guided mechatronic system. Methods and Materials: Prostates were contoured for 5 subjects' 3D TRUS images showing a maximum PAI of {<=}1 cm and a prostate volume of <50 cc. Two planning studies were done. First, prostate contours were artificially enlarged to 45 to 80 cc in 5- to 10-cc increments for a single subject. Second, all subject prostate contours were enlarged to 60 cc. For each study, three types of plans were manually created for comparison: a parallel needle template (PT) plan, a parallel needle no-template (PNT) plan, and an oblique needle no-template (OBL) plan. Needle positions and angles were not discretized for nontemplate plans. European Society for Therapeutic Radiology and Oncology dose-volume histogram guidelines, iodine-125 (145-Gy prescription, 0.43 U), and needle angles of <15 Degree-Sign were used. An OBL plan was delivered to a pubic arch containing a 60-cc prostate phantom that mimicked the anatomy of the subject with the greatest PAI (23% by volume). Results: In the increasing-prostate volume study, OBL plans were successful for prostates of {<=}80 cc, and PT plans were successful for prostates of <65 cc. In paired, one-sided t tests for the 60-cc volume study, OBL plans showed dosimetric improvements for all organs compared to both of the parallel type plans (p < 0.05); PNT plans showed a benefit only in planning target volumes receiving more than 100 Gy compared to PT plans. A computed tomography scan of the phantom showed submillimeter seed placement accuracy in all directions. Conclusion: OBL plans were significantly better than parallel plans, and an OBL plan was accurately delivered to a 60-cc prostate phantom with 23% PAI by volume.

  14. Journal of Neuroscience Methods 159 (2007) 170180 A tool for synthesizing spike trains with realistic interference

    E-Print Network [OSTI]

    Smith, Leslie S.

    2007-01-01

    , University of Stirling, UK Received 27 March 2006; received in revised form 19 June 2006; accepted 24 June at the bottom of a cell culture dish). We present an analysis of the transmission of intracellular signals from

  15. Nonlinear interference noise in 100-Gbit s{sup -1} communication lines with the DP-QPSK modulation format

    SciTech Connect (OSTI)

    Gurkin, N V; Nanii, Oleg E; Novikov, A G; Plaksin, S O; Treshchikov, V N; Ubaydullaev, Rustam R

    2013-06-30

    The nonlinear interference noise power was measured experimentally as a function of the signal power and the length of the fibre coherent 100-Gbit s{sup -1} communication line, in which chromatic dispersion is not optically compensated. An expression was derived for the optimal signal power corresponding to a maximal excess of the measured optical signal-to-noise ratio (OSNR) over the OSNR required for conditionally error-free operation. The dependence of signal optimal power measured experimentally well agrees with the theoretical formula derived. (optical information transmission)

  16. Observation of a narrow structure in 1H(?,KS0)X via interference with phi-meson production

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

    Amaryan, M J; Nepali, C; Polyakov, M V; Azimov, Ya; Briscoe, W J; Dodge, G E; Hyde, C E; Klein, F; Kuznetsov, V; Strakovsky, I

    2012-03-21

    We report observation of a narrow peak structure at ?1.54 GeV with a Gaussian width ? = 6 MeV in the missing mass of KS in the reaction ? + p ? pKSKL. The observed structure may be due to the interference between a strange (or antistrange) baryon resonance in the pKL system and the ?(KSKL) photoproduction leading to the same final state. The statistical significance of the observed excess of events estimated as the log-likelihood ratio of the resonant signal + background hypothesis and the ?-production-based background-only hypothesis corresponds to 5.3?.

  17. Voltammetric analysis apparatus and method

    DOE Patents [OSTI]

    Almon, A.C.

    1993-06-08

    An apparatus and method is described for electrochemical analysis of elements in solution. An auxiliary electrode, a reference electrode, and five working electrodes are positioned in a container containing a sample solution. The working electrodes are spaced apart evenly from each other and the auxiliary electrode to minimize any inter-electrode interference that may occur during analysis. An electric potential is applied between the auxiliary electrode and each of the working electrodes. Simultaneous measurements taken of the current flow through each of the working electrodes for each given potential in a potential range are used for identifying chemical elements present in the sample solution and their respective concentrations. Multiple working electrodes enable a more positive identification to be made by providing unique data characteristic of chemical elements present in the sample solution.

  18. Reprogramming DNA Methylation in Bovine Cells by Knocking Down DNA Methyltransferase-1 with RNA Interference 

    E-Print Network [OSTI]

    Stroud, Todd

    2010-01-20

    fluorescent protein (GFP) that will allow us to identify cells expressing the hairpin as well as a region coding for neomycin resistance so we could select for a pure population of transgenic cells to use for analysis. Infecting bovine fetal fibroblast cells...

  19. Co-channel interference reduction in Rayleigh fading Alex Grant 1

    E-Print Network [OSTI]

    Grant, Alex

    in the presence of Rayleigh fading. The variance transfer analysis of Alexan- der, Grant & Reed (Europ. Trans is a limiting factor for such networks. The results of [1] indicate that transport capacity at best scales only is the multiplication of xk[i] with an N- dimensional unit energy binary modulation waveform sk[i] {-1/ N, 1/ N

  20. Blue-detuned evanescent field surface traps for neutral atoms based on mode interference in ultra-thin optical fibres

    E-Print Network [OSTI]

    G. Sague; A. Baade; A. Rauschenbeutel

    2008-06-24

    We present and analyze a novel concept for blue-detuned evanescent field surface traps for cold neutral atoms based on two-mode interference in ultra-thin optical fibres. When two or more transverse modes with the same frequency co-propagate in the fibre, their different phase velocities cause a stationary interference pattern to establish. Intensity minima of the evanescent field at any distance from the fibre surface can be created and an array of optical microtraps can thus be obtained in the evanescent field. We discuss three possible combinations of the lowest order modes, yielding traps at one to two hundred nanometres from the fibre surface which, using a few ten milliwatts of trapping laser power, have a depth on the order of 1 mK for caesium atoms and a trapping lifetime exceeding 100 seconds. The resulting trapping geometry is of particular interest because atoms in such microtrap arrays will be coupled to any additional field propagating in the fibre via the evanescent field, thereby realising ensembles of fibre-coupled atoms.

  1. Measurement of ISR-FSR interference in the processes e+ e- --> mu+ mu- gamma and e+ e- --> pi+ pi- gamma

    E-Print Network [OSTI]

    BABAR Collaboration

    2015-08-17

    Charge asymmetry in processes e+ e- --> mu+ mu- gamma and e+ e- --> pi+ pi- gamma is measured using 232 fb-1 of data collected with the BABAR detector at center-of-mass energies near 10.58 GeV. An observable is introduced and shown to be very robust against detector asymmetries while keeping a large sensitivity to the physical charge asymmetry that results from the interference between initial and final state radiation. The asymmetry is determined as afunction of the invariant mass of the final-state tracks from production threshold to a few GeV/c2. It is compared to the expectation from QED for e+ e- --> mu+ mu- gamma and from theoretical models for e+ e- --> pi+ pi- gamma. A clear interference pattern is observed in e+ e- --> pi+ pi- gamma, particularly in the vicinity of the f_2(1270) resonance. The inferred rate of lowest order FSR production is consistent with the QED expectation for e+ e- --> mu+ mu- gamma, and is negligibly small for e+ e- --> pi+ pi- gamma.

  2. Measurement of ISR-FSR interference in the processes e+ e- --> mu+ mu- gamma and e+ e- --> pi+ pi- gamma

    E-Print Network [OSTI]

    ,

    2015-01-01

    Charge asymmetry in processes e+ e- --> mu+ mu- gamma and e+ e- --> pi+ pi- gamma is measured using 232 fb-1 of data collected with the BABAR detector at center-of-mass energies near 10.58 GeV. An observable is introduced and shown to be very robust against detector asymmetries while keeping a large sensitivity to the physical charge asymmetry that results from the interference between initial and final state radiation. The asymmetry is determined as afunction of the invariant mass of the final-state tracks from production threshold to a few GeV/c2. It is compared to the expectation from QED for e+ e- --> mu+ mu- gamma and from theoretical models for e+ e- --> pi+ pi- gamma. A clear interference pattern is observed in e+ e- --> pi+ pi- gamma, particularly in the vicinity of the f_2(1270) resonance. The inferred rate of lowest order FSR production is consistent with the QED expectation for e+ e- --> mu+ mu- gamma, and is negligibly small for e+ e- --> pi+ pi- gamma.

  3. harmonic analysis

    E-Print Network [OSTI]

    $author.value

    Faculty. Faculty listing for "harmonic analysis". Search People: ... Research Interests: complex analysis, harmonic analysis, and partial differential equations

  4. Comparison of nanosecond and picosecond excitation for interference-free two-photon laser-induced fluorescence detection of atomic hydrogen in flames

    SciTech Connect (OSTI)

    Kulatilaka, Waruna D.; Patterson, Brian D.; Frank, Jonathan H.; Settersten, Thomas B

    2008-09-10

    Two-photon laser-induced fluorescence (TP-LIF) line imaging of atomic hydrogen was investigated in a series of premixed CH4/O2/N2, H2/O2, and H2/O2/N2 flames using excitation with either picosecond or nanosecond pulsed lasers operating at 205 nm. Radial TP-LIF profiles were measured for a range of pulse fluences to determine the maximum interference-free signal levels and the corresponding picosecond and nanosecond laser fluences in each of 12 flames. For an interference-free measurement, the shape of the TP-LIF profile is independent of laser fluence. For larger fluences, distortions in the profile are attributed to photodissociation of H2O, CH3, and/or other combustion intermediates, and stimulated emission. In comparison with the nanosecond laser, excitation with the picosecond laser can effectively reduce the photolytic interference and produces approximately an order of magnitude larger interference-free signal in CH4/O2/N2 flames with equivalence ratios in the range of 0.5{<=}{phi}{<=}1.4, and in H{sub 2}/O{sub 2} flames with 0.3{<=}{phi}{<=}1.2. Although photolytic interference limits the nanosecond laser fluence in all flames, stimulated emission, occurring between the laser-excited level, H(n=3), and H(n=2), is the limiting factor for picosecond excitation in the flames with the highest H atom concentration. Nanosecond excitation is advantageous in the richest ({phi}=1.64) CH4/O2/N2 flame and in H2/O2/N2 flames. The optimal excitation pulse width for interference-free H atom detection depends on the relative concentrations of hydrogen atoms and photolytic precursors, the flame temperature, and the laser path length within the flame.

  5. Interference-induced enhancement of intensity and energy of a multimode quantum optical field by a subwavelength array of coherent light sources

    E-Print Network [OSTI]

    S. V. Kukhlevsky

    2008-06-13

    Recently, we have showed a mechanism that could provide a great transmission enhancement of the light waves passed through subwavelength aperture arrays in thin metal films not by the plasmon-polariton waves, but by the constructive interference of diffracted waves (beams generated by the apertures) at the detector placed in the far-field zone. We now present a quantum reformulation of the model. The Hamiltonian describing the interference-induced enhancement of the intensity and energy of a multimode quantum optical field is derived. Such a field can be produced, for instance, by a subwavelength array of coherent light sources.

  6. Characterization and Suppression of the Electromagnetic Interference Induced Phase Shift in the JLab FEL Photo - Injector Advanced Drive Laser System

    SciTech Connect (OSTI)

    F. G. Wilson, D. Sexton, S. Zhang

    2011-09-01

    The drive laser for the photo-cathode gun used in the JLab Free Electron Laser (FEL) facility had been experiencing various phase shifts on the order of tens of degrees (>20{sup o} at 1497 MHz or >40ps) when changing the Advanced Drive Laser (ADL) [2][3][4] micro-pulse frequencies. These phase shifts introduced multiple complications when trying to setup the accelerator for operation, ultimately inhibiting the robustness and overall performance of the FEL. Through rigorous phase measurements and systematic characterizations, we determined that the phase shifts could be attributed to electromagnetic interference (EMI) coupling into the ADL phase control loop, and subsequently resolved the issue of phase shift to within tenths of a degree (<0.5{sup o} at 1497 MHz or <1ps). The diagnostic method developed and the knowledge gained through the entire process will prove to be invaluable for future designs of similar systems.

  7. Opto-electronic device for frequency standard generation and terahertz-range optical demodulation based on quantum interference

    DOE Patents [OSTI]

    Georgiades, Nikos P. (Pasadena, CA); Polzik, Eugene S. (H.o slashed.jbjerg, DK); Kimble, H. Jeff (LaCanada, CA)

    1999-02-02

    An opto-electronic system and technique for comparing laser frequencies with large frequency separations, establishing new frequency standards, and achieving phase-sensitive detection at ultra high frequencies. Light responsive materials with multiple energy levels suitable for multi-photon excitation are preferably used for nonlinear mixing via quantum interference of different excitation paths affecting a common energy level. Demodulation of a carrier with a demodulation frequency up to 100's THZ can be achieved for frequency comparison and phase-sensitive detection. A large number of materials can be used to cover a wide spectral range including the ultra violet, visible and near infrared regions. In particular, absolute frequency measurement in a spectrum from 1.25 .mu.m to 1.66 .mu.m for fiber optics can be accomplished with a nearly continuous frequency coverage.

  8. Opto-electronic device for frequency standard generation and terahertz-range optical demodulation based on quantum interference

    DOE Patents [OSTI]

    Georgiades, N.P.; Polzik, E.S.; Kimble, H.J.

    1999-02-02

    An opto-electronic system and technique for comparing laser frequencies with large frequency separations, establishing new frequency standards, and achieving phase-sensitive detection at ultra high frequencies are disclosed. Light responsive materials with multiple energy levels suitable for multi-photon excitation are preferably used for nonlinear mixing via quantum interference of different excitation paths affecting a common energy level. Demodulation of a carrier with a demodulation frequency up to 100`s THZ can be achieved for frequency comparison and phase-sensitive detection. A large number of materials can be used to cover a wide spectral range including the ultra violet, visible and near infrared regions. In particular, absolute frequency measurement in a spectrum from 1.25 {micro}m to 1.66 {micro}m for fiber optics can be accomplished with a nearly continuous frequency coverage. 7 figs.

  9. Ultra-compact and broadband tunable mid-infrared multimode interference splitter based on graphene plasmonic waveguide

    E-Print Network [OSTI]

    Zheng, Ruiqi; Dong, Jianji

    2015-01-01

    We propose and design an ultra-compact and broadband tunable multimode interference (MMI) splitter in mid-infrared based on graphene plasmonic waveguides. The size of the device is only 0.56{\\mu}m*1.2{\\mu}m, which corresponds to device area of only about 0.014{\\lambda}^2, where {\\lambda} is the vacuum wavelength. And the center wavelength of the device can be tuned in a broad band from 7{\\mu}m to 9{\\mu}m with the Fermi level of graphene varied from 0.5eV to 1eV. Furthermore, the device is easy to be fabricated on chip.

  10. Method of photon spectral analysis

    DOE Patents [OSTI]

    Gehrke, Robert J. (Idaho Falls, ID); Putnam, Marie H. (Idaho Falls, ID); Killian, E. Wayne (Idaho Falls, ID); Helmer, Richard G. (Idaho Falls, ID); Kynaston, Ronnie L. (Blackfoot, ID); Goodwin, Scott G. (Idaho Falls, ID); Johnson, Larry O. (Pocatello, ID)

    1993-01-01

    A spectroscopic method to rapidly measure the presence of plutonium in soils, filters, smears, and glass waste forms by measuring the uranium L-shell x-ray emissions associated with the decay of plutonium. In addition, the technique can simultaneously acquire spectra of samples and automatically analyze them for the amount of americium and .gamma.-ray emitting activation and fission products present. The samples are counted with a large area, thin-window, n-type germanium spectrometer which is equally efficient for the detection of low-energy x-rays (10-2000 keV), as well as high-energy .gamma. rays (>1 MeV). A 8192- or 16,384 channel analyzer is used to acquire the entire photon spectrum at one time. A dual-energy, time-tagged pulser, that is injected into the test input of the preamplifier to monitor the energy scale, and detector resolution. The L x-ray portion of each spectrum is analyzed by a linear-least-squares spectral fitting technique. The .gamma.-ray portion of each spectrum is analyzed by a standard Ge .gamma.-ray analysis program. This method can be applied to any analysis involving x- and .gamma.-ray analysis in one spectrum and is especially useful when interferences in the x-ray region can be identified from the .gamma.-ray analysis and accommodated during the x-ray analysis.

  11. Method of photon spectral analysis

    DOE Patents [OSTI]

    Gehrke, R.J.; Putnam, M.H.; Killian, E.W.; Helmer, R.G.; Kynaston, R.L.; Goodwin, S.G.; Johnson, L.O.

    1993-04-27

    A spectroscopic method to rapidly measure the presence of plutonium in soils, filters, smears, and glass waste forms by measuring the uranium L-shell x-ray emissions associated with the decay of plutonium. In addition, the technique can simultaneously acquire spectra of samples and automatically analyze them for the amount of americium and [gamma]-ray emitting activation and fission products present. The samples are counted with a large area, thin-window, n-type germanium spectrometer which is equally efficient for the detection of low-energy x-rays (10-2,000 keV), as well as high-energy [gamma] rays (>1 MeV). A 8,192- or 16,384 channel analyzer is used to acquire the entire photon spectrum at one time. A dual-energy, time-tagged pulser, that is injected into the test input of the preamplifier to monitor the energy scale, and detector resolution. The L x-ray portion of each spectrum is analyzed by a linear-least-squares spectral fitting technique. The [gamma]-ray portion of each spectrum is analyzed by a standard Ge [gamma]-ray analysis program. This method can be applied to any analysis involving x- and [gamma]-ray analysis in one spectrum and is especially useful when interferences in the x-ray region can be identified from the [gamma]-ray analysis and accommodated during the x-ray analysis.

  12. Experiments performed in order to reveal fundamental differences between the diffraction and interference of waves and electrons

    E-Print Network [OSTI]

    Victor V. Demjanov

    2010-02-20

    Diffraction patterns of electrons are believed to resemble those of electromagnetic waves (EMW). I performed a series of experiments invoked to show that the periodicity of peaks in the diffraction diagram of electrons is concerned with the periodicity of the arrangement of scattering centers in the diffraction grating in combination with the supposed character of the spatial structure of the electron as a system of regularly spaced concentric shells of elasticity. I started from the experiment on the diffraction of electrons and EMWs at the sharp edge of the opaque half-plane. This simple scattering configuration enabled me to discriminate between the re-radiation mechanism of the wave diffraction and ricochet scattering of electrons on the edge of the half-plane. Then I made experiments with scattering on composite objects proceeding step by step from a single straight edge to a couple of edges (one slit) and then to four edges (two slits). Thus I succeeded in interpretation of the double-slit diffraction (four straight edges) in terms of the scattering on a single edge. I managed also to observe the electron's trajectory. Equipping the slit's edge with a semiconductor sensors I registered the passing of the electron through the slit detecting simultaneously a weaker signal at another slit. This technique appeared not to destroy or disturb the "interference" pattern. Closing one slit by inserting therein a transparent for EMWs piece of dielectric I have found that the scattering pattern beneath this slit vanishes while the scattering pattern under the open slit remains as before when both slits were open. This experiment indicates that the electron "interferes" with its electromagnetic component passed via the slit plugged by the transparent for it dielectric.

  13. Standard test methods for chemical, mass spectrometric, and spectrochemical analysis of nuclear-grade plutonium dioxide powders and pellets

    E-Print Network [OSTI]

    American Society for Testing and Materials. Philadelphia

    2010-01-01

    1.1 These test methods cover procedures for the chemical, mass spectrometric, and spectrochemical analysis of nuclear-grade plutonium dioxide powders and pellets to determine compliance with specifications. 1.2 The analytical procedures appear in the following order: Sections Plutonium Sample Handling 8 to 10 Plutonium by Controlled-Potential Coulometry Plutonium by Ceric Sulfate Titration Plutonium by Amperometric Titration with Iron(II) Plutonium by Diode Array Spectrophotometry Nitrogen by Distillation Spectrophotometry Using Nessler Reagent 11 to 18 Carbon (Total) by Direct Combustion–Thermal Conductivity 19 to 30 Total Chlorine and Fluorine by Pyrohydrolysis 31 to 38 Sulfur by Distillation Spectrophotometry 39 to 47 Plutonium Isotopic Analysis by Mass Spectrometry Rare Earth Elements by Spectroscopy 48 to 55 Trace Elements by Carrier–Distillation Spectroscopy 56 to 63 Impurities by ICP-AES Impurity Elements by Spark-Source Mass Spectrography 64 to 70 Moisture by the Coulomet...

  14. Quantitative analysis of Nb in solution in a microalloyed carburizing steel by electrochemical etching

    SciTech Connect (OSTI)

    Rivas, A.L. [Universidad Simon Bolivar, Valle de Sartenejas-Edificio MEM Piso 2, Departamento Ciencia de los Materiales, Caracas-1080 (Venezuela)], E-mail: alrivas@usb.ve; Matlock, D.K. [Advanced Steel Processing and Product Research Center, Colorado School of Mines, Golden, Colorado 80401 (United States)], E-mail: dmatlock@mines.edu; Speer, J.G. [Advanced Steel Processing and Product Research Center, Colorado School of Mines, Golden, Colorado 80401 (United States)], E-mail: jspeer@mines.edu

    2008-05-15

    The amount of Nb in solution in a microalloyed carburizing steel (Nb-modified SAE 8620) was evaluated in different heat treated conditions. The test procedure involved electrochemical extraction, filtration and Inductively Coupled Plasma Atomic Emission Spectroscopic (ICP-AES) analysis. Characterization by X-ray diffraction of the residues collected in the filters was also performed. Results showed that Nb in solution tends to hydrolyze during electrolysis in a 10 vol.% HCl electrolyte, giving misleading measurements of the amount of Nb that dissolved during high temperature heat treatment. Hydrolysis of Nb is prevented by the addition of tartaric acid to the electrolyte. In the full dissolution condition, coarse (Ti,Nb)CN was the only precipitate present. Finer (Nb,Ti)C precipitates were observed after heat treating at 1050 deg. C.

  15. PHYSICAL REVIEW A 88, 043413 (2013) Nuclear-wave-packet quantum interference in the intense laser dissociation of the D2

    E-Print Network [OSTI]

    Moiseyev, Nimrod

    2013-01-01

    PHYSICAL REVIEW A 88, 043413 (2013) Nuclear-wave-packet quantum interference in the intense laser of Debrecen, H-4010 Debrecen, PO Box 12, Hungary ´Agnes Vib´ok* Department of Theoretical Physics, University of Physics, and Minerva Center of Nonlinear Physics in Complex Systems, Technion - Israel Institute

  16. Testimony for the hearing on political interference with the work of government climate change scientists, Congressional Oversight and Government Reform Committee, Jan. 30,

    E-Print Network [OSTI]

    Testimony for the hearing on political interference with the work of government climate change scientists, Congressional Oversight and Government Reform Committee, Jan. 30, 2007, U. S. House, but today I am presenting testimony as an individual. My participation is not connected to my job duties

  17. The preparation and analysis of ammonia base sulfite pulping liquor 

    E-Print Network [OSTI]

    Honstead, John Frederick

    1950-01-01

    . It was amntion- ed, however, t. . at during the test i' or SO in the Palmrose analysis all the sulfite was converted to sulfate~ which does not interfere with the ammonia-formol reaction. In addition the Palmrose analysis leaves the solution neutralized to a... satisfactorily but above . 5$ ammonia it does not seem advisable to attempt to obtain concentrations from pH measurements. For various solutions of ammonium hydroxide the change of pH with sulfur dioxide concentration was measured. These results are tabulated...

  18. Azimuthal quadrupole correlation from gluon interference in 200 GeV and 7 TeV p+p collisions

    E-Print Network [OSTI]

    R. L. Ray

    2014-08-28

    The Balitskii-Fadin-Kuraev-Lipatov (BFKL) multi-Pomeron model of Levin and Rezaeian, with extension to the gluon saturation region, is applied to long-range pseudorapidity correlations on relative azimuth for low momentum final-state hadrons produced in $\\sqrt{s}$ = 200~GeV and 7~TeV p+p collisions. The multi-Pomeron exchange probabilities in the model were estimated by fitting the minimum-bias p+p multiplicity frequency distributions. The multi-Pomeron model prediction for the amplitude of the minimum-bias average quadrupole correlation, proportional to $\\cos 2(\\phi_1 - \\phi_2)$, is consistent with the 200~GeV data when theoretically expected gluon saturation momentum scales are used. Correlation predictions for the high multiplicity 7~TeV p+p collision data are also consistent with the long-range pseudorapidity correlations at small relative azimuth observed in the data. The results presented here show that the present application of a multiple parton-shower, gluon interference mechanism for generating the long-range pseudorapidity, azimuthal quadrupole correlation is not excluded by the data.

  19. Time-resolved measurement of photon states using two-photon interference with photons from short-time reference pulses

    E-Print Network [OSTI]

    Changliang Ren; Holger F. Hofmann

    2011-06-01

    To fully utilize the energy-time degree of freedom of photons for optical quantum information processes, it is necessary to control and characterize the quantum states of the photons at extremely short time scales. For measurements beyond the time resolution of available detectors, two-photon interference with a photon in a short time reference pulse may be a viable alternative. In this paper, we derive the temporal measurement operators for the bunching statistics of a single photon input state with a reference photon. It is shown that the effects of the pulse shape of the reference pulse can be expressed in terms of a spectral filter selecting the bandwidth within which the measurement can be treated as an ideal projection on eigenstates of time. For full quantum tomography, temporal coherence can be determined by using superpositions of reference pulses at two different times. Moreover, energy-time entanglement can be evaluated based on the two-by-two entanglement observed in the coherences between pairs of detection times.

  20. Mixed molecular motor traffic on nucleic acid tracks: models of transcriptional interference and regulation of gene expression

    E-Print Network [OSTI]

    Ghosh, Soumendu; Ghanti, Dipanwita; Chowdhury, Debashish

    2015-01-01

    While polymerizing a RNA molecule, a RNA polymerase (RNAP) walks step-by-step on the corresponding single-stranded DNA (ssDNA) template in a specific direction. Thus, a RNAP can be regarded as a molecular motor for which the ssDNA template serves as the track. The sites of start and stop of its walk on the DNA mark the two ends of the genetic message that it transcribes into RNA. Interference of transcription of two overlapping genes can strongly influence the levels of their expression, i.e., the overall rate of the synthesis of the corresponding full-length RNA molecules, through suppressive effect of one on the other. Here we model this process as a mixed traffic of two groups of RNAP motors that are characterized by two distinct pairs of on- and off-ramps. Each group polymerizes identical copies of a RNA while the RNAs polymerized by the two groups are different. These models, which may also be viewed as two interfering totally asymmetric simple exclusion processes, account for all modes of transcriptiona...

  1. Mixed molecular motor traffic on nucleic acid tracks: models of transcriptional interference and regulation of gene expression

    E-Print Network [OSTI]

    Bameta, Tripti; Ghanti, Dipanwita; Ghosh, Soumendu

    2015-01-01

    RNA polymerase (RNAP) is molecular machine that polymerizes a RNA molecule, a linear heteropolymer, using a single stranded DNA (ssDNA) as the corresponding template; the sequence of monomers of the RNA is dictated by that of monomers on the ssDNA template. While polymerizing a RNA, the RNAP walks step-by-step on the ssDNA template in a specific direction. Thus, a RNAP can be regarded also as a molecular motor and the sites of start and stop of its walk on the DNA mark the two ends of the genetic message that it transcribes into RNA. Interference of transcription of two overlapping genes is believed to regulate the levels of their expression, i.e., the overall rate of the corresponding RNA synthesis, through suppressive effect of one on the other. Here we model this process as a mixed traffic of two groups of RNAP motors that are characterized by two distinct pairs of start and stop sites. Each group polymerizes identical copies of a RNA while the RNAs polymerized by the two groups are different. These models...

  2. Investigation and optimization of low-frequency noise performance in readout electronics of dc superconducting quantum interference device

    SciTech Connect (OSTI)

    Zhao, Jing; Zhang, Yi; Krause, Hans-Joachim; Lee, Yong-Ho

    2014-05-15

    We investigated and optimized the low-frequency noise characteristics of a preamplifier used for readout of direct current superconducting quantum interference devices (SQUIDs). When the SQUID output was detected directly using a room-temperature low-voltage-noise preamplifier, the low-frequency noise of a SQUID system was found to be dominated by the input current noise of the preamplifiers in case of a large dynamic resistance of the SQUID. To reduce the current noise of the preamplifier in the low-frequency range, we investigated the dependence of total preamplifier noise on the collector current and source resistance. When the collector current was decreased from 8.4 mA to 3 mA in the preamplifier made of 3 parallel SSM2220 transistor pairs, the low-frequency total voltage noise of the preamplifier (at 0.1 Hz) decreased by about 3 times for a source resistance of 30 ? whereas the white noise level remained nearly unchanged. Since the relative contribution of preamplifier's input voltage and current noise is different depending on the dynamic resistance or flux-to-voltage transfer of the SQUID, the results showed that the total noise of a SQUID system at low-frequency range can be improved significantly by optimizing the preamplifier circuit parameters, mainly the collector current in case of low-noise bipolar transistor pairs.

  3. Standard test methods for chemical, mass spectrometric, spectrochemical, nuclear, and radiochemical analysis of nuclear-grade plutonium nitrate solutions

    E-Print Network [OSTI]

    American Society for Testing and Materials. Philadelphia

    2010-01-01

    1.1 These test methods cover procedures for the chemical, mass spectrometric, spectrochemical, nuclear, and radiochemical analysis of nuclear-grade plutonium nitrate solutions to determine compliance with specifications. 1.2 The analytical procedures appear in the following order: Sections Plutonium by Controlled-Potential Coulometry Plutonium by Amperometric Titration with Iron(II) Plutonium by Diode Array Spectrophotometry Free Acid by Titration in an Oxalate Solution 8 to 15 Free Acid by Iodate Precipitation-Potentiometric Titration Test Method 16 to 22 Uranium by Arsenazo I Spectrophotometric Test Method 23 to 33 Thorium by Thorin Spectrophotometric Test Method 34 to 42 Iron by 1,10-Phenanthroline Spectrophotometric Test Method 43 to 50 Impurities by ICP-AES Chloride by Thiocyanate Spectrophotometric Test Method 51 to 58 Fluoride by Distillation-Spectrophotometric Test Method 59 to 66 Sulfate by Barium Sulfate Turbidimetric Test Method 67 to 74 Isotopic Composition by Mass Spectrom...

  4. Hydrogen Analysis

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation on Hydrogen Analysis to the DOE Systems Analysis Workshop held in Washington, D.C. July 28-29, 2004 to discuss and define role of systems analysis in DOE Hydrogen Program.

  5. 1242 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--II: ANALOG AND DIGITAL SIGNAL PROCESSING, VOL. 45, NO. 9, SEPTEMBER 1998 On the Analysis of Noise and Interference in

    E-Print Network [OSTI]

    Krishnapura, Nagendra

    with a different purpose in mind, namely to achieve linear tunable signal processing using nonlinear circuit such circuits perform linear operations on the input signal, they are nonlinear from internal points. The behavior between and is linear and is still described by (2) and (3) [2], [5]. In a log-domain circuit [2

  6. A method for estimating common cause failure probability and model parameters : the inverse stress-strength interference (ISSI) technique

    E-Print Network [OSTI]

    Guey, Ching Ning

    1984-01-01

    In this study, an alternative for the analysis of common cause failures (CCFs) is investigated. The method studied consists of using the Licensee Event Report (LER) data to get single component failure probability and using ...

  7. Ultra low noise YBa{sub 2}Cu{sub 3}O{sub 7??} nano superconducting quantum interference devices implementing nanowires

    SciTech Connect (OSTI)

    Arpaia, R.; Arzeo, M.; Nawaz, S.; Charpentier, S.; Lombardi, F.; Bauch, T.

    2014-02-17

    We present results on ultra low noise YBa{sub 2}Cu{sub 3}O{sub 7–?} (YBCO) nano Superconducting QUantum Interference Devices (nanoSQUIDs). To realize such devices, we implemented high quality YBCO nanowires, working as weak links between two electrodes. We observe critical current modulation as a function of an externally applied magnetic field in the full temperature range below the transition temperature T{sub C}. The white flux noise below 1??{sub 0}/?(Hz) at T=8?K makes our nanoSQUIDs very attractive for the detection of small spin systems.

  8. Measurement of Analyzing Power for Proton-Carbon Elastic Scattering in the Coulomb-Nuclear Interference Region with a 22-GeV/c Polarized Proton Beam

    E-Print Network [OSTI]

    J. Tojo; I. Alekseev; M. Bai; B. Bassalleck; G. Bunce; A. Deshpande; J. Doskow; S. Eilerts; D. E. Fields; Y. Goto; H. Huang; V. Hughes; K. Imai; M. Ishihara; V. Kanavets; K. Kurita; K. Kwiatkowski; B. Lewis; W. Lozowski; Y. Makdisi; H. -O. Meyer; B. V. Morozov; M. Nakamura; B. Przewoski; T. Rinckel; T. Roser; A. Rusek; N. Saito; B. Smith; D. Svirida; M. Syphers; A. Taketani; T. L. Thomas; D. Underwood; D. Wolfe; K. Yamamoto; L. Zhu

    2002-06-22

    The analyzing power for proton-carbon elastic scattering in the coulomb-nuclear interference region of momentum transfer, $9.0\\times10^{-3}<-t<4.1\\times10^{-2}$ (GeV/$c)^{2}$, was measured with a 21.7 GeV/$c$ polarized proton beam at the Alternating Gradient Synchrotron of Brookhaven National Laboratory. The ratio of hadronic spin-flip to non-flip amplitude, $r_5$, was obtained from the analyzing power to be $\\text{Re} r_5=0.088\\pm 0.058$ and $\\text{Im} r_5=-0.161\\pm 0.226$.

  9. Strong-Field Breit-Wheeler Pair Production in Short Laser Pulses: Identifying Multiphoton Interference and Carrier-Envelope Phase Effects

    E-Print Network [OSTI]

    Jansen, Martin J A

    2015-01-01

    The creation of electron-positron pairs by the strong-field Breit-Wheeler process in intense short laser pulses is investigated in the framework of laser-dressed quantum electrodynamics. Regarding laser field parameters in the multiphoton regime, special attention is brought to the energy spectrum of the created particles, which can be reproduced and explained by means of an intuitive model. The model is based on the probabilities of multiphoton events driven by the spectral components of the laser pulse. It allows, in particular, to identify interferences between different pair production channels which exhibit a characteristic dependence on the laser carrier-envelope phase.

  10. The design, implementation and testing of data gathering instrumentation for measurement of electromagnetic interference in electric power substations 

    E-Print Network [OSTI]

    Gerloff, Gary Wayne

    1983-01-01

    by direct digitization. The R7912 and support hardware produced digitized data in a for- mat compatible with the available analysis computer. The data could be taken from the R7912 processed by host computer and stored on hard disl?vithout introducing...

  11. Ultrasonic Phased Array Assessment of the Interference Fit and Leak Path of the North Anna Unit 2 Control Rod Drive Mechanism Nozzle 63 with Destructive Validation

    SciTech Connect (OSTI)

    Crawford, Susan L.; Cinson, Anthony D.; MacFarlan, Paul J.; Hanson, Brady D.; Mathews, Royce

    2012-08-01

    The objective of this investigation was to evaluate the efficacy of ultrasonic testing (UT) for primary water leak path assessments of reactor pressure vessel (RPV) upper head penetrations. Operating reactors have experienced leakage when stress corrosion cracking of nickel-based alloy penetrations allowed primary water into the annulus of the interference fit between the penetration and the low-alloy steel RPV head. In this investigation, UT leak path data were acquired for an Alloy 600 control rod drive mechanism nozzle penetration, referred to as Nozzle 63, which was removed from the North Anna Unit 2 reactor when the RPV head was replaced in 2002. In-service inspection prior to the head replacement indicated that Nozzle 63 had a probable leakage path through the interference fit region. Nozzle 63 was examined using a phased-array UT probe with a 5.0-MHz, eight-element annular array. Immersion data were acquired from the nozzle inner diameter surface. The UT data were interpreted by comparing to responses measured on a mockup penetration with known features. Following acquisition of the UT data, Nozzle 63 was destructively examined to determine if the features identified in the UT examination, including leakage paths and crystalline boric acid deposits, could be visually confirmed. Additional measurements of boric acid deposit thickness and low-alloy steel wastage were made to assess how these factors affect the UT response. The implications of these findings for interpreting UT leak path data are described.

  12. "No Ions" Troubleshooting Strategy ELEMENT ICP-MS

    E-Print Network [OSTI]

    Lee, Cin-Ty Aeolus

    -trace users often forget that there is an Analog Detector Mode and they fail to test for ion transmission.g. loss of contact or GE relay failure) will cause a significant loss of ion transmission since the energy DIAGNOSTICS/Statusbit INLET to switch "Valve 12" on and off. If GE relay works correctly then this should gr

  13. Monitoring Trace Radionuclides by ICP Mass Spectrometry with Femtosecond

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines light on77 PAGEMissionStress New Webpage We have a newJul 139Laser

  14. Microsoft Word - ICP-10-010webpost.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework uses concrete7 Assessment of the Performance of3293 Unlimited10

  15. Microsoft Word - ICP-11-005webpost.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework uses concrete7 Assessment of the Performance of3293 Unlimited105

  16. Microsoft Word - ICP-11-007webpost.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework uses concrete7 Assessment of the Performance of3293 Unlimited1057

  17. Microsoft Word - ICP-12-010webpost.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework uses concrete7 Assessment of the Performance of3293 Unlimited10572-004

  18. Microsoft Word - ICP-13-004webpost.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework uses concrete7 Assessment of the Performance of3293

  19. Microsoft Word - icp11001CXPostForm.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework uses concrete7 Assessment ofLana CoxWhat?Copper2329th, 4:00 PM1-001

  20. Joint measurement of current-phase relations and transport properties of hybrid junctions using a three junctions superconducting quantum interference device

    SciTech Connect (OSTI)

    Basset, J.; Delagrange, R.; Weil, R.; Kasumov, A.; Bouchiat, H.; Deblock, R.

    2014-07-14

    We propose a scheme to measure both the current-phase relation and differential conductance dI/dV of a superconducting junction, in the normal and the superconducting states. This is done using a dc Superconducting Quantum Interference Device with two Josephson junctions in parallel with the device under investigation and three contacts. As a demonstration, we measure the current-phase relation and dI/dV of a small Josephson junction and a carbon nanotube junction. In this latter case, in a regime where the nanotube is well conducting, we show that the non-sinusoidal current phase relation we find is consistent with the theory for a weak link, using the transmission extracted from the differential conductance in the normal state. This method holds great promise for future investigations of the current-phase relation of more exotic junctions.

  1. Interference fringes of m=0 spin states under the Majorana transition caused by rapid half-rotation of a magnetic field

    SciTech Connect (OSTI)

    Takahashi, Atsushi; Morinaga, Atsuo [Department of Physics, Faculty of Science and Technology, Tokyo University of Science, Yamazaki, Noda-shi, Chiba 278-8510 (Japan)

    2010-04-15

    The phase shift and visibility of fringes in the Ramsey atom interferometer composed of the |F=1,m{sub F}=0> and |F=2,m{sub F}=0> states were examined systematically for rapid half-rotation of the magnetic field. It was verified that the phase shifts by {pi} rad in the adiabatic regime, but it does not shift from the original one in the nonadiabatic regime. These results support Robbins and Berry's claim [J. M. Robbins and M. V. Berry, J. Phys. A 27, L435 (1994)]. The fact that the interference fringes disappear in the intermediate regime and reappear in the nonadiabatic regime can be explained by the Majorana transition caused by a rapid reverse of the magnetic field.

  2. Two-photon interference and coherent control of single InAs quantum dot emissions in an Ag-embedded structure

    SciTech Connect (OSTI)

    Liu, X., E-mail: iu.xiangming@nims.go.jp [Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021 (Japan); National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan); Kumano, H.; Nakajima, H.; Odashima, S.; Asano, T.; Suemune, I. [Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021 (Japan); Kuroda, T. [National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan)

    2014-07-28

    We have recently reported the successful fabrication of bright single-photon sources based on Ag-embedded nanocone structures that incorporate InAs quantum dots. The source had a photon collection efficiency as high as 24.6%. Here, we show the results of various types of photonic characterizations of the Ag-embedded nanocone structures that confirm their versatility as regards a broad range of quantum optical applications. We measure the first-order autocorrelation function to evaluate the coherence time of emitted photons, and the second-order correlation function, which reveals the strong suppression of multiple photon generation. The high indistinguishability of emitted photons is shown by the Hong-Ou-Mandel-type two-photon interference. With quasi-resonant excitation, coherent population flopping is demonstrated through Rabi oscillations. Extremely high single-photon purity with a g{sup (2)}(0) value of 0.008 is achieved with ?-pulse quasi-resonant excitation.

  3. OIL ANALYSIS LAB TRIVECTOR ANALYSIS

    E-Print Network [OSTI]

    OIL ANALYSIS LAB TRIVECTOR ANALYSIS This test method is a good routine test for the overall condition of the oil, the cleanliness, and can indicate the presence of wear metals that could be coming of magnetic metal particles within the oil. This may represent metals being worn from components (i

  4. Seismic and hydroacoustic analysis relevant to MH370

    SciTech Connect (OSTI)

    Stead, Richard J. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-07-03

    The vicinity of the Indian Ocean is searched for open and readily available seismic and/or hydroacoustic stations that might have recorded a possible impact of MH370 with the ocean surface. Only three stations are identified: the IMS hydrophone arrays H01 and H08, and the Geoscope seismic station AIS. Analysis of the data from these stations shows an interesting arrival on H01 that has some interference from an Antarctic ice event, large amplitude repeating signals at H08 that obscure any possible arrivals, and large amplitude chaotic noise at AIS precludes any analysis at higher frequencies of interest. The results are therefore rather inconclusive but may point to a more southerly impact location within the overall Indian Ocean search region. The results would be more useful if they can be combined with any other data that are not readily available.

  5. Transcriptomics-based identification of developmental toxicants through their interference with cardiomyocyte differentiation of embryonic stem cells

    SciTech Connect (OSTI)

    Dartel, Dorien A.M. van; Pennings, Jeroen L.A.; Schooten, Frederik J. van; Piersma, Aldert H.

    2010-03-15

    The embryonic stem cell test (EST) predicts developmental toxicity based on the inhibition of cardiomyocyte differentiation of embryonic stem cells (ESC). The subjective endpoint, the long culture duration together with the undefined applicability domain and related predictivity need further improvement to facilitate implementation of the EST into regulatory strategies. These aspects may be improved by studying gene expression changes in the ESC differentiation cultures and their modulation by compound exposure using transcriptomics. Here, we tested the developmental toxicants monobutyl phthalate and 6-aminonicotinamide. ESC were allowed to differentiated, and cardiomyocyte differentiation was assessed after 10 days of culture. RNA of solvent controls was collected after 0, 24, 48, 72 and 96 h of exposure, and RNA of developmental-toxicant-exposed cultures was collected after 24 and 96 h. Samples were hybridized to DNA microarrays, and 1355 genes were found differentially expressed among the unexposed experimental groups. These regulated genes were involved in differentiation-related processes, and Principal Component Analysis (PCA) based on these genes showed that the unexposed experimental groups appeared in chronological order in the PCA, which can therefore be regarded as a continuous representation of the differentiation track. The developmental-toxicant-exposed cultures appeared to deviate significantly from this differentiation track, which confirms the compound-modulating effects on the differentiation process. The incorporation of transcriptomics in the EST is expected to provide a more informative and improved endpoint in the EST as compared with morphology, allowing early detection of differentiation modulation. Furthermore, this approach may improve the definition of the applicability domain and predictivity of the EST.

  6. Analysis Repository

    SciTech Connect (OSTI)

    DOE

    2012-03-16

    The Analysis Repository is a compilation of analyses and analytical models relevant to assessing hydrogen fuel and fuel cell issues. Projects in the repository relate to: hydrogen production, delivery, storage, fuel cells, and hydrogen vehicle technology; hydrogen production feedstock cost and availability; electricity production, central and distributed; energy resource estimation and forecasting.

  7. Global transcriptome analysis of Clostridium thermocellum ATCC 27405 during growth on dilute acid pretreated Populus and switchgrass

    SciTech Connect (OSTI)

    Wilson, Charlotte M; Rodriguez Jr, Miguel; Johnson, Courtney M; Martin, S L.; Chu, Tzu Ming; Wolfinger, Russ; Hauser, Loren John; Land, Miriam L; Klingeman, Dawn Marie; Tschaplinski, Timothy J; Mielenz, Jonathan R; Brown, Steven D

    2013-01-01

    Background The thermophilic anaerobe Clostridium thermocellum is a candidate consolidated bioprocessing (CBP) biocatalyst for cellulosic ethanol production. The aim of this study was to investigate C. thermocellum genes required to ferment biomass substrates and to conduct a robust comparison of DNA microarray and RNA sequencing (RNA-seq) analytical platforms. Results C. thermocellum ATCC 27405 fermentations were conducted with a 5 g/L solid substrate loading of either pretreated switchgrass or Populus. Quantitative saccharification and inductively coupled plasma emission spectroscopy (ICP-ES) for elemental analysis revealed composition differences between biomass substrates, which may have influenced growth and transcriptomic profiles. High quality RNA was prepared for C. thermocellum grown on solid substrates and transcriptome profiles were obtained for two time points during active growth (12 hours and 37 hours postinoculation). A comparison of two transcriptomic analytical techniques, microarray and RNA-seq, was performed and the data analyzed for statistical significance. Large expression differences for cellulosomal genes were not observed. We updated gene predictions for the strain and a small novel gene, Cthe_3383, with a putative AgrD peptide quorum sensing function was among the most highly expressed genes. RNAseq data also supported different small regulatory RNA predictions over others. The DNA microarray gave a greater number (2,351) of significant genes relative to RNA-seq (280 genes when normalized by the kernel density mean of M component (KDMM) method) in an analysis of variance (ANOVA) testing method with a 5 % false discovery rate (FDR). When a 2-fold difference in expression threshold was applied, 73 genes were significantly differentially expressed in common between the two techniques. Sulfate and phosphate uptake/utilization genes, along with genes for a putative efflux pump system were some of the most differentially regulated transcripts when profiles for C. thermocellum grown on either pretreated switchgrass or Populus were compared. Conclusions Our results suggest that a high degree of agreement in differential gene expression measurements between transcriptomic platforms is possible, but choosing an appropriate normalization regime is essential.

  8. Development of a flow injection analysis method for the determination of acrylamide copolymers in oilfield brines

    SciTech Connect (OSTI)

    Taylor, K.C.; Burke, R.A.; Schramm, L.L. [Petroleum Recovery Inst., Calgary, Alberta (Canada); Nasr-El-Din, H.A. [Saudi Aramco, Dhahran (Saudi Arabia)

    1995-11-01

    An automated method for the determination of acrylamide polymers by flow injection analysis (FIA) has been developed and optimized for routine use. The method has been extensively tested for interferences common in oilfield brines. Potential interferences were examined from Na{sup +}, Ca{sup 2+}, Cr{sup 3+}, Al{sup 3+}, Zr{sup 3+}, NH{sub 4}{sup +}, Cl{sup {minus}}, OH{sup {minus}}, CO{sub 3}{sup 2{minus}}, sample coloration, and commonly used surfactants. The analysis is specific for amides, and the sensitivity to concentration of amide groups in the polymer was shown to be constant as the degree of polymer hydrolysis was varied. The range of the method is 0.1 to 100 mg/L. Sample throughput is 30 samples/h with triplicate analysis. Relative standard deviations of 0.2% are readily obtained from standard solutions and 0.5% from complex samples (at 50 mg/L). The method is applicable to the determination of aqueous, acrylamide-based polymers in process streams, surface waters and oilfield brines.

  9. Economic analysis

    SciTech Connect (OSTI)

    None

    1980-06-01

    The Energy Policy and Conservation Act (EPCA) mandated that minimum energy efficiency standards be established for classes of refrigerators and refrigerator-freezers, freezers, clothes dryers, water heaters, room air conditioners, home heating equipment, kitchen ranges and ovens, central air conditioners, and furnaces. EPCA requires that standards be designed to achieve the maximum improvement in energy efficiency that is technologically feasible and economically justified. Following the introductory chapter, Chapter Two describes the methodology used in the economic analysis and its relationship to legislative criteria for consumer product efficiency assessment; details how the CPES Value Model systematically compared and evaluated the economic impacts of regulation on the consumer, manufacturer and Nation. Chapter Three briefly displays the results of the analysis and lists the proposed performance standards by product class. Chapter Four describes the reasons for developing a baseline forecast, characterizes the baseline scenario from which regulatory impacts were calculated and summarizes the primary models, data sources and assumptions used in the baseline formulations. Chapter Five summarizes the methodology used to calculate regulatory impacts; describes the impacts of energy performance standards relative to the baseline discussed in Chapter Four. Also discussed are regional standards and other program alternatives to performance standards. Chapter Six describes the procedure for balancing consumer, manufacturer, and national impacts to select standard levels. Details of models and data bases used in the analysis are included in Appendices A through K.

  10. Performance and Stability Analysis of a Shrouded-Fan UAV

    E-Print Network [OSTI]

    de Divitiis, Nicola

    2009-01-01

    This paper deals with the estimation of the performance and stability for a shrouded-fan unmanned rotorcraft whose mission profile also prescribes the flight in ground effect. The not so simple estimation of the aerodynamic coefficients and of the thrust in the various situations makes the performance calculation and the stability analysis difficult tasks. This is due to the strong interaction between the fan flow and shroud that causes quite different flow structures about the airframe depending on flight conditions. A further difficulty is related to the ground effect which produces substantial modifications in the rotor thrust and aerodynamic coefficients. To evaluate performance and stability, two models have been developed. One determines the aerodynamic coefficients of the shroud, whereas the other one calculates thrust and moment of the rotors system. Both models take into account the mutual interference between fan flow and fuselage and ground effect. Performance and stability are then discussed with ...

  11. LineVISAR. A fringe-trace data analysis program

    SciTech Connect (OSTI)

    Furnish, Michael D.

    2014-02-01

    The line-imaging ORVIS or VISAR provides velocity as a function of position and time for a line on an experimental setup via a streak camera record of interference fringes. This document describes a Matlab-based program which guides the user through the process of converting these fringe data to a velocity surface. The data reduction is of the "fringe trace" type, wherein the changes in velocity at a given position on the line are calculated based on fringe motion past that point. The analyst must establish the fringe behavior up front, aided by peak-finding routines in the program. However, the later work of using fringe jumps to compensate for phase problems in other analysis techniques is greatly reduced. This program is not a standard GUI construction, and is prescriptive. At various points it saves the progress, allowing later restarts from those points.

  12. Sandia Energy - Uncertainty Analysis

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

    Uncertainty Analysis Home Stationary Power Nuclear Fuel Cycle Nuclear Energy Safety Technologies Risk and Safety Assessment Uncertainty Analysis Uncertainty AnalysisTara...

  13. NREL: Energy Analysis: Geospatial Analysis

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines light on771/6/14RecentGeospatial Analysis To perform and support geospatial

  14. Laser ablation-inductively coupled plasma-mass spectrometry: Examinations of the origins of polyatomic ions and advances in the sampling of particulates

    SciTech Connect (OSTI)

    Witte, Travis

    2011-11-30

    This dissertation provides a general introduction to Inductively coupled plasma-mass spectrometry (ICP-MS) and laser ablation (LA) sampling, with an examination of analytical challenges in the employment of this technique. It discusses the origin of metal oxide ions (MO+) in LA-ICP-MS, as well as the effect of introducing helium and nitrogen to the aerosol gas flow on the formation of these polyatomic interferences. It extends the study of polyatomic ions in LA-ICP-MS to metal argide (MAr+) species, an additional source of possible significant interferences in the spectrum. It describes the application of fs-LA-ICP-MS to the determination of uranium isotope ratios in particulate samples.

  15. Hazard analysis results report

    SciTech Connect (OSTI)

    Niemi, B.J., Westinghouse Hanford

    1996-09-30

    This document describes and defines the Hazard Analysis Results for the Tank Waste Remediation System Final Safety Analysis Report.

  16. White noise of Nb-based microwave superconducting quantum interference device multiplexers with NbN coplanar resonators for readout of transition edge sensors

    SciTech Connect (OSTI)

    Kohjiro, Satoshi; Hirayama, Fuminori; Yamamori, Hirotake; Nagasawa, Shuichi; Fukuda, Daiji; Hidaka, Mutsuo

    2014-06-14

    White noise of dissipationless microwave radio frequency superconducting quantum interference device (RF-SQUID) multiplexers has been experimentally studied to evaluate their readout performance for transition edge sensor (TES) photon counters ranging from near infrared to gamma ray. The characterization has been carried out at 4?K, first to avoid the low-frequency fluctuations present at around 0.1?K, and second, for a feasibility study of readout operation at 4?K for extended applications. To increase the resonant Q at 4?K and maintain low noise SQUID operation, multiplexer chips consisting of niobium nitride (NbN)-based coplanar-waveguide resonators and niobium (Nb)-based RF-SQUIDs have been developed. This hybrid multiplexer exhibited 1?×?10{sup 4}???Q???2?×?10{sup 4} and the square root of spectral density of current noise referred to the SQUID input ?S{sub I}?=?31?pA/?Hz. The former and the latter are factor-of-five and seven improvements from our previous results on Nb-based resonators, respectively. Two-directional readout on the complex plane of the transmission component of scattering matrix S{sub 21} enables us to distinguish the flux noise from noise originating from other sources, such as the cryogenic high electron mobility transistor (HEMT) amplifier. Systematic noise measurements with various microwave readout powers P{sub MR} make it possible to distinguish the contribution of noise sources within the system as follows: (1) The achieved ?S{sub I} is dominated by the Nyquist noise from a resistor at 4?K in parallel to the SQUID input coil which is present to prevent microwave leakage to the TES. (2) The next dominant source is either the HEMT-amplifier noise (for small values of P{sub MR}) or the quantization noise due to the resolution of 300-K electronics (for large values of P{sub MR}). By a decrease of these noise levels to a degree that is achievable by current technology, we predict that the microwave RF-SQUID multiplexer can exhibit ?S{sub I}???5?pA/?Hz, i.e., close to ?S{sub I} of state-of-the-art DC-SQUID-based multiplexers.

  17. Determination of trace amounts of cerium in paint by inductively coupled plasma atomic emission spectrometry

    SciTech Connect (OSTI)

    Wong, K.L.

    1981-11-01

    The determination of Ce in paint by inductively coupled plasma atomic emission spectrometry (ICP-OES) is described, and the detection limit of ICP-OES of 0.0004 ppM is compared with that of other methods. The effects of the major elemental components of paint, Si, Pb, Cr, and Na on the ICP-OES determination of Ce were studied. The interference of 400 ppM of the other ions on the determination of 10 ppM Ce was small (0 to 3% error). The method is applicable to the range of 0.2 to 700 ppM Ce. (BLM)

  18. Analysis Of Factors Affecting Natural Source Slf Electromagnetic...

    Open Energy Info (EERE)

    to the integrated axis of the artificial electromagnetic interference field, the noise is weakest. (3) Rain can exert great influence on the high frequency band of natural...

  19. Utilization Analysis Page 1 UTILIZATION ANALYSIS

    E-Print Network [OSTI]

    Oliver, Douglas L.

    Utilization Analysis Page 1 UTILIZATION ANALYSIS Section 46a-68-40 and HIRING/PROMOTION GOALS utilized in the Health Center's workforce, the numbers of protected classes in the workforce must conducted for each occupational category and position classification. The Utilization Analysis was performed

  20. Clean Energy Policy Analysis: Impact Analysis of Potential Clean...

    Energy Savers [EERE]

    Policy Analysis: Impact Analysis of Potential Clean Energy Policy Options for the Hawaii Clean Energy Initiative Clean Energy Policy Analysis: Impact Analysis of Potential...

  1. Advanced Multivariate Analysis Tools Applied to Surface Analysis...

    Office of Scientific and Technical Information (OSTI)

    Advanced Multivariate Analysis Tools Applied to Surface Analysis. Citation Details In-Document Search Title: Advanced Multivariate Analysis Tools Applied to Surface Analysis. No...

  2. Planning, Budget, and Analysis

    Broader source: Energy.gov [DOE]

    Presentation on Planning, Budget, and Analysis to the DOE Systems Analysis Workshop held in Washington, D.C. July 28-29, 2004.

  3. Enhanced reaction rates in NDP analysis with neutron scattering

    SciTech Connect (OSTI)

    Downing, R. Gregory

    2014-04-15

    Neutron depth profiling (NDP) makes accessible quantitative information on a few isotopic concentration profiles ranging from the surface into the sample a few micrometers. Because the candidate analytes for NDP are few, there is little interference encountered. Furthermore, neutrons have no charge so mixed chemical states in the sample are of no direct concern. There are a few nuclides that exhibit large probabilities for neutron scattering. The effect of neutron scattering on NDP measurements has not previously been evaluated as a basis for either enhancing the reaction rates or as a source of measurement error. Hydrogen is a common element exhibiting large neutron scattering probability found in or around sample volumes being analyzed by NDP. A systematic study was conducted to determine the degree of signal change when neutron scattering occurs during analysis. The relative signal perturbation was evaluated for materials of varied neutron scattering probability, concentration, total mass, and geometry. Signal enhancements up to 50% are observed when the hydrogen density is high and in close proximity to the region of analysis with neutron beams of sub thermal energies. Greater signal enhancements for the same neutron number density are reported for thermal neutron beams. Even adhesive tape used to position the sample produces a measureable signal enhancement. Because of the shallow volume, negligible distortion of the NDP measured profile shape is encountered from neutron scattering.

  4. K Basin Hazard Analysis

    SciTech Connect (OSTI)

    PECH, S.H.

    2000-08-23

    This report describes the methodology used in conducting the K Basins Hazard Analysis, which provides the foundation for the K Basins Final Safety Analysis Report. This hazard analysis was performed in accordance with guidance provided by DOE-STD-3009-94, Preparation Guide for U. S. Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports and implements the requirements of DOE Order 5480.23, Nuclear Safety Analysis Report.

  5. Measurement and Analysis of Radio-frequency Radiation Exposure Level from Different Mobile Base Transceiver Stations in Ajaokuta and Environs, Nigeria

    E-Print Network [OSTI]

    Ushie, P O; Bolaji, Ayinmode; Osahun, O D

    2013-01-01

    We present the result of a preliminary assessment of radio-frequency radiation exposure from selected mobile base stations in Ajaokuta environs. The Power density of RF radiation within a radial distance of 125m was measured. Although values fluctuated due to the influence of other factors, including wave interference from other electromagnetic sources around reference base stations, we show from analysis that radiation exposure level is below the standard limit (4.5W/sqm for 900MHz and 9W/sqm for 18000MHz) set by the International Commission on Non-ionizing Radiation Protection (ICNIRP) and other regulatory agencies.

  6. TRIFID (TRansuranic Isotopic Fraction Interrogation Device): A second generation plutonium isotopic analysis system

    SciTech Connect (OSTI)

    Fleissner, J G; Coressel, T W; Freier, D A; Macklin, L L

    1989-01-01

    The TRIFID (Transuranic Isotopic Fraction Interrogation Device) system is a second generation plutonium isotopic analysis system which incorporates many new and unique features in the area of isotopic data acquisition and isotopic analysis instrument consisting of a Canberra Series 95-MCA interfaced to a Compaq 386 computer. The entire TRIFID software package, including MCA communications and isotopic analysis routines, was developed using the C programming language. Extensive use has been made of user friendly screens and menus for ease of operation and training and to facilitate use by technical level operators. Automated TRIFID features provide for MCA/ADC setup and acquisition, spectral storage, isotopic analysis, and report generation. One unique feature of the TRIFID system design allows it to be pre-programed for an entire day's counting. The isotopic analysis module (EPICS) contains an expert system formalism which is used to detect and assay for spectral interferences, and to automatically adjust peak fitting constraints based on spectral intensity variations. A TRIFID system has been in operation in a production laboratory at the Rocky Flats Plant since September 1988. Marked decreases in training and hands-on operation time have been achieved in comparison to the older, preceding isotopic systems. 2 refs., 3 figs.

  7. Transition of Iodine Analysis to Accelerator Mass Spectrometry

    SciTech Connect (OSTI)

    M. L. Adamic; J. E. Olson; D. D. Jenson; J. G. Eisenmenger; M. G. Watrous

    2012-09-01

    This NA 22 funded research project investigated the transition of iodine isotopic analyses from thermal ionization mass spectrometry (TIMS) to an accelerator mass spectrometry (AMS) system. Previous work (Fiscal Year 2010) had demonstrated comparable data from TIMS and AMS. With AMS providing comparable data with improved background levels and vastly superior sample throughput, improvement in the sample extraction from environmental sample matrices was needed to bring sample preparation throughput closer to the operation level of the instrument. Previous research used an extraction chemistry that was not optimized for yield or refined for reduced labor to prove the principle. This research was done to find an extraction with better yield using less labor per sample to produce a sample ready for the AMS instrument. An extraction method using tetramethyl ammonium hydroxide (TMAH) was developed for removal of iodine species from high volume air filters. The TMAH with gentle heating was superior to the following three extraction methods: ammonium hydroxide aided by sonication, acidic and basic extraction aided by microwave, and ethanol mixed with sodium hydroxide. Taking the iodine from the extraction solvent to being ready for AMS analysis was accomplished by a direct precipitation, as well as, using silver wool to harvest the iodine from the TMAH. Portions of the same filters processed in FY 2010 were processed again with the improved extraction scheme followed by successful analysis by AMS at the Swiss Federal Institute of Technology. The data favorably matched the data obtained in 2010. The time required for analysis has been reduced over the aqueous extraction/AMS approach developed in FY 2010. For a hypothetical batch of 30 samples, the AMS methodology is about 10 times faster than the traditional gas phase chemistry and TIMS analysis. As an additional benefit, background levels for the AMS method are about 1000 times lower than TIMS. This results from the fundamental mechanisms of ionization in the AMS system and which produces a beneficial cleanup of molecular interferences. Continued clean operation of the extraction process was demonstrated through blank analysis included with all sample sets analyzed. INL work showed improvement on the first year’s demonstration of AMS vs. TIMS. An improved extraction of high volume air filters followed by isotopic analysis by AMS, can be used successfully to make iodine measurements with results comparable to those obtained by filter combustion and TIMS analysis. More progress on the conversion from an extract solution to an AMS sample ready for analysis is still needed. Although the preparation scheme through AMS is already at a higher performing thoughput than TIMS, the chemical preparation cannot match the instrument capability for number of samples per day without further development.

  8. FY12 Final Report for PL10-Mod Separations-PD12: Electrochemically Modulated Separation of Plutonium from Dilute and Concentrated Dissolver Solutions for Analysis by Gamma Spectroscopy

    SciTech Connect (OSTI)

    Pratt, Sandra H.; Arrigo, Leah M.; Duckworth, Douglas C.; Cloutier, Janet M.; Breshears, Andrew T.; Schwantes, Jon M.

    2013-05-01

    Accurate and timely analysis of plutonium in spent nuclear fuel is critical in nuclear safeguards for detection of both protracted and rapid plutonium diversions. Gamma spectroscopy is a viable method for accurate and timely measurements of plutonium provided that the plutonium is well separated from the interfering fission and activation products present in spent nuclear fuel. Electrochemically modulated separation (EMS) is a method that has been used successfully to isolate picogram amounts of Pu from nitric acid matrices. With EMS, Pu adsorption may be turned “on” and “off” depending on the applied voltage, allowing for collection and stripping of Pu without the addition of chemical reagents. In this work, we have scaled up the EMS process to isolate microgram quantities of Pu from matrices encountered in spent nuclear fuel during reprocessing. Several challenges have been addressed including surface area limitations, radiolysis effects, electrochemical cell performance stability, and chemical interferences. After these challenges were resolved, 6 µg Pu was deposited in the electrochemical cell with approximately an 800-fold reduction of fission and activation product levels from a spent nuclear fuel sample. Modeling showed that these levels of Pu collection and interference reduction may not be sufficient for Pu detection by gamma spectroscopy. The main remaining challenges are to achieve a more complete Pu isolation and to deposit larger quantities of Pu for successful gamma analysis of Pu. If gamma analyses of Pu are successful, EMS will allow for accurate and timely on-site analysis for enhanced Pu safeguards.

  9. DWPF Sample Vial Insert Study-Statistical Analysis of DWPF Mock-Up Test Data

    SciTech Connect (OSTI)

    Harris, S.P. [Westinghouse Savannah River Company, AIKEN, SC (United States)

    1997-09-18

    This report is prepared as part of Technical/QA Task Plan WSRC-RP-97-351 which was issued in response to Technical Task Request HLW/DWPF/TTR-970132 submitted by DWPF. Presented in this report is a statistical analysis of DWPF Mock-up test data for evaluation of two new analytical methods which use insert samples from the existing HydragardTM sampler. The first is a new hydrofluoric acid based method called the Cold Chemical Method (Cold Chem) and the second is a modified fusion method.Either new DWPF analytical method could result in a two to three fold improvement in sample analysis time.Both new methods use the existing HydragardTM sampler to collect a smaller insert sample from the process sampling system. The insert testing methodology applies to the DWPF Slurry Mix Evaporator (SME) and the Melter Feed Tank (MFT) samples.The insert sample is named after the initial trials which placed the container inside the sample (peanut) vials. Samples in small 3 ml containers (Inserts) are analyzed by either the cold chemical method or a modified fusion method. The current analytical method uses a HydragardTM sample station to obtain nearly full 15 ml peanut vials. The samples are prepared by a multi-step process for Inductively Coupled Plasma (ICP) analysis by drying, vitrification, grinding and finally dissolution by either mixed acid or fusion. In contrast, the insert sample is placed directly in the dissolution vessel, thus eliminating the drying, vitrification and grinding operations for the Cold chem method. Although the modified fusion still requires drying and calcine conversion, the process is rapid due to the decreased sample size and that no vitrification step is required.A slurry feed simulant material was acquired from the TNX pilot facility from the test run designated as PX-7.The Mock-up test data were gathered on the basis of a statistical design presented in SRT-SCS-97004 (Rev. 0). Simulant PX-7 samples were taken in the DWPF Analytical Cell Mock-up Facility using 3 ml inserts and 15 ml peanut vials. A number of the insert samples were analyzed by Cold Chem and compared with full peanut vial samples analyzed by the current methods. The remaining inserts were analyzed by the modified fusion method, for comparison to the current method, and also to obtain a calcine correction factor. The simulant was within 40 - 42 wt% solids in order to provide a rheology within the DWPF design range. The rheology at 42 wt% was approximately 47 dynes/cm2 yield stress at 251/4C.

  10. Systems Analysis Workshop Purpose

    Broader source: Energy.gov [DOE]

    Presentation on SAW purpose to the DOE Systems Analysis Workshop held in Washington, D.C. July 28-29, 2004 to discuss and define role of systems analysis in DOE Hydrogen Program.

  11. Utility Cost Analysis 

    E-Print Network [OSTI]

    Horn, S.

    1984-01-01

    One of the first steps in setting up an energy management program in a commercial building is determining operating costs per energy consuming system through a utility cost analysis. This paper illustrates utility cost analysis methods used...

  12. Photovoltaics Life Cycle Analysis

    E-Print Network [OSTI]

    1 Photovoltaics Life Cycle Analysis Vasilis Fthenakis Center of Life Cycle Analysis Earth & Environmental Engineering Department Columbia University and National Photovoltaic (PV) EHS Research Center (air, water, solid) M, Q E PV array Photovoltaic modules Balance of System (BOS) (Inverters

  13. Systems Analysis Workshop Agenda

    Broader source: Energy.gov [DOE]

    Agenda from DOE Systems Analysis Workshop held in Washington, D.C. July 28-29, 2004 to discuss and define role of systems analysis in DOE Hydrogen Program.

  14. Analysis And Analyticity

    E-Print Network [OSTI]

    Schick, Theodore W. Jr.

    229 ANALYSIS AND ANALYTICITY THEODORE W. SCHICK, JR. In this paper, I attempt to solve the paradox of analysis by eliminating certain ambiguities that have have plagued theories of property-identity and proposition-identity. The paradox...229 ANALYSIS AND ANALYTICITY THEODORE W. SCHICK, JR. In this paper, I attempt to solve the paradox of analysis by eliminating certain ambiguities that have have plagued theories of property-identity and proposition-identity. The paradox...

  15. Design and Analysis on a Cryogenic Current Amplifier with a Superconducting Microwave Resonator

    E-Print Network [OSTI]

    Okazaki, Yuma

    2015-01-01

    We propose a new type of cryogenic current amplifiers, in which low-frequency power spectrum of current can be measured through a measurement of microwave response of a superconducting resonant circuit shunted by a series array of Josephson junctions. From numerical analysis on the equivalent circuit, the numerical value of the input-referred current noise of the proposed amplifier is found to be two orders of magnitude lower than the noise floor measured with the conventional cryogenic current amplifiers based on high-electron-mobility transistors or superconducting quantum interference devices. Our proposal can open new avenues for investigating low-temperature solid-state devices that require lower noise and wider bandwidth power spectrum measurements of current.

  16. Spectrophotometric determination of uranium(VI) with chlorophosphonazo-mN by flow injection analysis

    SciTech Connect (OSTI)

    Sun, Jun Ying; Chen, Xing Guo; Hu, Zhi De

    1994-07-01

    A sensitive and selective spectrophotometric flow injection analysis (FIA) method with chlorophosphonazo-mN has been developed for the determination of uranium(VI) in standard ore samples. Most interfereing ions are effectively eliminated by the masking reagent diethylenetriaminepentaacetic acid (DTPA). In the U(VI)-chlorophosphonazo-mN system, the maximum absorption wavelength is at 680 nm and Beer`s law is obeyed in the range of 1 to 15 {mu}g {mu}l{sup -1}. The correlation coefficient of the calibration curve is. 0.9998, the sampling frequency is 60{sup -1}, and detection limit for uranium(VI) is 0.5 {mu}g mul{sup -1}.

  17. On Modeling and Analysis of MIMO Wireless Mesh Networks with Triangular Overlay Topology

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

    Cao, Zhanmao; Wu, Chase Q.; Zhang, Yuanping; Shiva, Sajjan G.; Gu, Yi

    2015-01-01

    Multiple input multiple output (MIMO) wireless mesh networks (WMNs) aim to provide the last-mile broadband wireless access to the Internet. Along with the algorithmic development for WMNs, some fundamental mathematical problems also emerge in various aspects such as routing, scheduling, and channel assignment, all of which require an effective mathematical model and rigorous analysis of network properties. In this paper, we propose to employ Cartesian product of graphs (CPG) as a multichannel modeling approach and explore a set of unique properties of triangular WMNs. In each layer of CPG with a single channel, we design a node coordinate scheme thatmore »retains the symmetric property of triangular meshes and develop a function for the assignment of node identity numbers based on their coordinates. We also derive a necessary-sufficient condition for interference-free links and combinatorial formulas to determine the number of the shortest paths for channel realization in triangular WMNs.« less

  18. Multivariate Analysis with Linearizable Regressions

    E-Print Network [OSTI]

    Jan de Leeuw

    2011-01-01

    13] J. de Leeuw. Multivariate analysis with linearizable1988. 14] J. de Leeuw. Multivariate analysis with optimaleditors, Progress in Multivariate Analysis , Calcutta,

  19. Improvement in understanding the deposition of ambient dust particles on ECAM (environmental continuous air monitor) filters, reduction of the alpha-particle interference of radon progeny and other radioactive aerosols in different particle size ranges on filters, and development of ECAMs with increased sensitivity under dusty outdoor conditions.

    SciTech Connect (OSTI)

    Schery, Stephen D., Wasiolek, Piotr; Rodgers, John

    1999-06-01

    Improvement in understanding the deposition of ambient dust particles on ECAM (environmental continuous air monitor) filters, reduction of the alpha-particle interference of radon progeny and other radioactive aerosols in different particle size ranges on filters, and development of ECAMs with increased sensitivity under dusty outdoor conditions.

  20. Identification of Intestinal Ischemia Using Magnetic Vector Projection Analysis Jared. A. Sims BE1 , Robert Palmer BE MSN3, L. Alan. Bradshaw PhD1,2, William. O. Richards MD1

    E-Print Network [OSTI]

    Wikswo, John

    . A Superconducting QUantum Interference Device (SQUID) magnetometer has the ability to detect the magnetic fields

  1. ACCIDENT ANALYSIS AND HAZARD ANALYSIS FOR HUMAN AND ORGANIZATIONAL FACTORS

    E-Print Network [OSTI]

    Leveson, Nancy

    culpable. An accident analysis method is needed that will guide the work, aid in the analysis of the role

  2. HAZARD ANALYSIS SOFTWARE

    SciTech Connect (OSTI)

    Sommer, S; Tinh Tran, T

    2008-04-08

    Washington Safety Management Solutions, LLC developed web-based software to improve the efficiency and consistency of hazard identification and analysis, control selection and classification, and to standardize analysis reporting at Savannah River Site. In the new nuclear age, information technology provides methods to improve the efficiency of the documented safety analysis development process which includes hazard analysis activities. This software provides a web interface that interacts with a relational database to support analysis, record data, and to ensure reporting consistency. A team of subject matter experts participated in a series of meetings to review the associated processes and procedures for requirements and standard practices. Through these meetings, a set of software requirements were developed and compiled into a requirements traceability matrix from which software could be developed. The software was tested to ensure compliance with the requirements. Training was provided to the hazard analysis leads. Hazard analysis teams using the software have verified its operability. The software has been classified as NQA-1, Level D, as it supports the analysis team but does not perform the analysis. The software can be transported to other sites with alternate risk schemes. The software is being used to support the development of 14 hazard analyses. User responses have been positive with a number of suggestions for improvement which are being incorporated as time permits. The software has enforced a uniform implementation of the site procedures. The software has significantly improved the efficiency and standardization of the hazard analysis process.

  3. 652009 IEEE EMI Failure Analysis Techniques

    E-Print Network [OSTI]

    Cortes, Corinna

    Pommerenke, with contributions from all members of the EMC Laboratory at the Missouri University of Science & Technology Introduction Products fail electromagnetic interference (EMI) tests. This can be a disappointing experience, or it can be part of a design strategy that seeks to implement only the needed countermea- sures

  4. ENHANCED UNCERTAINTY ANALYSIS FOR SRS COMPOSITE ANALYSIS

    SciTech Connect (OSTI)

    Smith, F.; Phifer, M.

    2011-06-30

    The Composite Analysis (CA) performed for the Savannah River Site (SRS) in 2009 (SRS CA 2009) included a simplified uncertainty analysis. The uncertainty analysis in the CA (Smith et al. 2009b) was limited to considering at most five sources in a separate uncertainty calculation performed for each POA. To perform the uncertainty calculations in a reasonable amount of time, the analysis was limited to using 400 realizations, 2,000 years of simulated transport time, and the time steps used for the uncertainty analysis were increased from what was used in the CA base case analysis. As part of the CA maintenance plan, the Savannah River National Laboratory (SRNL) committed to improving the CA uncertainty/sensitivity analysis. The previous uncertainty analysis was constrained by the standard GoldSim licensing which limits the user to running at most four Monte Carlo uncertainty calculations (also called realizations) simultaneously. Some of the limitations on the number of realizations that could be practically run and the simulation time steps were removed by building a cluster of three HP Proliant windows servers with a total of 36 64-bit processors and by licensing the GoldSim DP-Plus distributed processing software. This allowed running as many as 35 realizations simultaneously (one processor is reserved as a master process that controls running the realizations). These enhancements to SRNL computing capabilities made uncertainty analysis: using 1000 realizations, using the time steps employed in the base case CA calculations, with more sources, and simulating radionuclide transport for 10,000 years feasible. In addition, an importance screening analysis was performed to identify the class of stochastic variables that have the most significant impact on model uncertainty. This analysis ran the uncertainty model separately testing the response to variations in the following five sets of model parameters: (a) K{sub d} values (72 parameters for the 36 CA elements in sand and clay), (b) Dose Parameters (34 parameters), (c) Material Properties (20 parameters), (d) Surface Water Flows (6 parameters), and (e) Vadose and Aquifer Flow (4 parameters). Results provided an assessment of which group of parameters is most significant in the dose uncertainty. It was found that K{sub d} and the vadose/aquifer flow parameters, both of which impact transport timing, had the greatest impact on dose uncertainty. Dose parameters had an intermediate level of impact while material properties and surface water flows had little impact on dose uncertainty. Results of the importance analysis are discussed further in Section 7 of this report. The objectives of this work were to address comments received during the CA review on the uncertainty analysis and to demonstrate an improved methodology for CA uncertainty calculations as part of CA maintenance. This report partially addresses the LFRG Review Team issue of producing an enhanced CA sensitivity and uncertainty analysis. This is described in Table 1-1 which provides specific responses to pertinent CA maintenance items extracted from Section 11 of the SRS CA (2009). As noted above, the original uncertainty analysis looked at each POA separately and only included the effects from at most five sources giving the highest peak doses at each POA. Only 17 of the 152 CA sources were used in the original uncertainty analysis and the simulation time was reduced from 10,000 to 2,000 years. A major constraint on the original uncertainty analysis was the limitation of only being able to use at most four distributed processes. This work expanded the analysis to 10,000 years using 39 of the CA sources, included cumulative dose effects at downstream POAs, with more realizations (1,000) and finer time steps. This was accomplished by using the GoldSim DP-Plus module and the 36 processors available on a new windows cluster. The last part of the work looked at the contribution to overall uncertainty from the main categories of uncertainty variables: K{sub d}s, dose parameters, flow parameters, and material propertie

  5. Technical Analysis: Alternatives to Chart Analysis 

    E-Print Network [OSTI]

    Purcell, Wayne D.

    1999-08-02

    To Chart Analysis Wayne D. Purcell* Technical analysis uses past price information to form expectations about what will happen in the future. The bar chart shows the high, low and closing prices for each day for a particular commodity. Under the scrutiny... of a skilled chart ana- lyst, the chart reveals sell and buy signals as important components of a price risk management program. However, not all producers are comfortable reading a chart. There is also the danger that when one is waiting and watching...

  6. Asset Protection Analysis Guide

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

    2008-08-21

    The Guide provides examples of the application of as set protection analysis to several common problems. Canceled by DOE N 251.80.

  7. NREL Sustainability Analysis

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

    for Sustainability Analysis and Communication: * By 2016, coordinate with feedstock logistics and conversion R&D areas to set targets for .....air emissions for at least three...

  8. Modeling and Analysis

    Broader source: Energy.gov [DOE]

    DOE modeling and analysis activities focus on reducing uncertainties and improving transparency in photovoltaics (PV) and concentrating solar power (CSP) performance modeling. The overall goal of...

  9. EGR Cooler Deposit Analysis

    Broader source: Energy.gov [DOE]

    Analysis of fouling and performance of exhaust gas recirculation (EGR) coolers as a function of EGR flow rate, inlet gas and coolant temperatures, soot level, and hydrocarbon concentration

  10. Decision Analysis for EGS

    Broader source: Energy.gov [DOE]

    Project objectives: DEVELOPMENT OF ANALYSIS TOOLS TO ASSESS: Uncertainties associated with exploration for EGS; Uncertainties associated with development of EGS; Uncertainties associated with operation of EGS.

  11. Sandia Energy - Modeling & Analysis

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

    Center (PV RTC), Photovoltaic Systems Evaluation Laboratory (PSEL), Renewable Energy, SMART Grid, Solar, Solar Newsletter, SunShot, Systems Analysis, Systems...

  12. Sandia Energy - Analysis

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

    Climate Change Is the Subject of a New Book Analysis, Climate, Global Climate & Energy, Monitoring, News, News & Events, Sensing, Sensing & Monitoring, Water Security Climate...

  13. Performance Analysis with Vampir

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

    (frank.winkler@tu-dresden.de) Performance Analysis with Vampir Disclaimer Performance tools will not automatically make you code run faster. They help you understand, what your...

  14. Analysis of the D + ; D + s ! K + K 0

    E-Print Network [OSTI]

    --5]. Measurements of the Cabbibo suppressed D + ! K + K 0 Ã? + and Cabbibo favored D + s ! K + K 0 Ã? + decays 3 channels are allowed to coherently interfere. Knowledge of the quantum mechanical decay amplitude from

  15. DEMAND INTERPROCEDURAL PROGRAM ANALYSIS

    E-Print Network [OSTI]

    Reps, Thomas W.

    1 DEMAND INTERPROCEDURAL PROGRAM ANALYSIS USING LOGIC DATABASES Thomas W. Reps Computer Sciences@cs.wisc.edu ABSTRACT This paper describes how algorithms for demand versions of inerprocedural program­ analysis for all elements of the program. This paper concerns the solution of demand versions of interprocedural

  16. Hazard Analysis Database Report

    SciTech Connect (OSTI)

    GAULT, G.W.

    1999-10-13

    The Hazard Analysis Database was developed in conjunction with the hazard analysis activities conducted in accordance with DOE-STD-3009-94, Preparation Guide for US Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports, for the Tank Waste Remediation System (TWRS) Final Safety Analysis Report (FSAR). The FSAR is part of the approved TWRS Authorization Basis (AB). This document describes, identifies, and defines the contents and structure of the TWRS FSAR Hazard Analysis Database and documents the configuration control changes made to the database. The TWRS Hazard Analysis Database contains the collection of information generated during the initial hazard evaluations and the subsequent hazard and accident analysis activities. The database supports the preparation of Chapters 3,4, and 5 of the TWRS FSAR and the USQ process and consists of two major, interrelated data sets: (1) Hazard Evaluation Database--Data from the results of the hazard evaluations; and (2) Hazard Topography Database--Data from the system familiarization and hazard identification.

  17. Supervisory Program Analysis Officer

    Broader source: Energy.gov [DOE]

    A successful candidate in this position will be responsible for the program analysis and evaluation of all activities which fall within the purview of the Office. The incumbent directs a moderate...

  18. Systems Analysis Sub site

    SciTech Connect (OSTI)

    EERE

    2012-03-16

    Systems analysis provides direction, focus, and support for the development and introduction of hydrogen production, storage, and end-use technologies, and provides a basis for recommendations on a balanced portfolio of activities.

  19. Fluid Inclusion Gas Analysis

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Dilley, Lorie

    Fluid inclusion gas analysis for wells in various geothermal areas. Analyses used in developing fluid inclusion stratigraphy for wells and defining fluids across the geothermal fields. Each sample has mass spectrum counts for 180 chemical species.

  20. Shortcuts to Financial Analysis 

    E-Print Network [OSTI]

    Larson, R. J.

    1985-01-01

    . Shortcut methods allow identification of potentially attractive and unattractive ideas. They also allow quick selection between alternative solutions to the same problem. Therefore, thorough analysis is applied to those proposals which are most likely...

  1. Analysis of Boolean Functions

    E-Print Network [OSTI]

    Tan, Li-Yang

    2012-01-01

    Scribe notes from the 2012 Barbados Workshop on Computational Complexity. A series of lectures on Analysis of Boolean Functions by Ryan O'Donnell, with a guest lecture by Per Austrin.

  2. Energy Sector Market Analysis

    SciTech Connect (OSTI)

    Arent, D.; Benioff, R.; Mosey, G.; Bird, L.; Brown, J.; Brown, E.; Vimmerstedt, L.; Aabakken, J.; Parks, K.; Lapsa, M.; Davis, S.; Olszewski, M.; Cox, D.; McElhaney, K.; Hadley, S.; Hostick, D.; Nicholls, A.; McDonald, S.; Holloman, B.

    2006-10-01

    This paper presents the results of energy market analysis sponsored by the Department of Energy's (DOE) Weatherization and International Program (WIP) within the Office of Energy Efficiency and Renewable Energy (EERE). The analysis was conducted by a team of DOE laboratory experts from the National Renewable Energy Laboratory (NREL), Oak Ridge National Laboratory (ORNL), and Pacific Northwest National Laboratory (PNNL), with additional input from Lawrence Berkeley National Laboratory (LBNL). The analysis was structured to identify those markets and niches where government can create the biggest impact by informing management decisions in the private and public sectors. The analysis identifies those markets and niches where opportunities exist for increasing energy efficiency and renewable energy use.

  3. Software for Multilevel Analysis

    E-Print Network [OSTI]

    Jan de Leeuw; Ita Kreft

    2011-01-01

    SOFTWARE FOR MULTILEVEL ANALYSIS JAN DE LEEUW AND ITA G.G.of the more important software programs and packages thatstatistical and numerical software does not have and does

  4. Fluid Inclusion Gas Analysis

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Dilley, Lorie

    2013-01-01

    Fluid inclusion gas analysis for wells in various geothermal areas. Analyses used in developing fluid inclusion stratigraphy for wells and defining fluids across the geothermal fields. Each sample has mass spectrum counts for 180 chemical species.

  5. Usage Policies Notebook for Trion RIE / ICP Dry Etch Revision date

    E-Print Network [OSTI]

    Mease, Kenneth D.

    of gases, enter the room and shut off all gas cylinders valves by turning them fully clockwise. Check completed the training and passed the certification may use this equipment. Users may only use the portion

  6. LA-ICP-AES using a high resolution fiber optic interferometer...

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

    the small differences between isotopes of radioactive elements such as uranium, thorium and plutonium. The system can also detect isobars (different elements that have the...

  7. HSV-1 ICP0: An E3 Ubiquitin Ligase That Counteracts Host Intrinsic and Innate Immunity

    E-Print Network [OSTI]

    Lanfranca, Mirna Perusina; Mostafa, Heba H.; Davido, David J.

    2014-05-20

    -early protein ORF61 abrogates the IRF3-mediated innate immune response through degradation of activated IRF3. J. Virol. 2011, 85, 11079–11089. Cells 2014, 3 448 18. Wang, L.; Oliver, S.L.; Sommer, M.; Rajamani, J.; Reichelt, M.; Arvin, A.M. Disruption...

  8. The Application of LC-ICP-MS to Study Metal Ion Homeostasis in Biological Systems 

    E-Print Network [OSTI]

    McCormick, Sean P.

    2014-12-10

    Eukaryotic cells contain low-molecular-mass metal complexes (LMMMCs), defined as having masses between 200 – 10,000 Da, but these so-called labile or chelatable metal pools are poorly defined in terms of structures and ...

  9. Determination of actinides in environmental samples with ICP-MS and automated batch preconcentration

    SciTech Connect (OSTI)

    Crain, J.S.; Smith, L.L.; Alvaradao, J.A. [Argonne National Laboratory, IL (United States)] [and others

    1994-12-31

    Thorium, uranium, and uranium progeny (e.g., {sup 226}Ra) were isolated from a variety of natural water matrices (well, spring, lake, river, and tap waters) using automated batch separation and a proprietary chelating resin. Minimal sample treatment was required in advance of the chemical separation procedure, i.e., samples were acidified, enriched isotopes were added and equilibrated, and, in certain cases, samples were filtered to remove biomass and other particulate matter. Major elemental constituents (e.g., Mg and Ca) were removed by the chemical separation. The isolated actinides and their detectable progeny were then determined using isotope dilution inductively coupled plasma-mass spectrometry combined with ultrasonic nebulization; flow injection was also used to improve sample utilization efficiency and increase the practical limit of preconcentration. Preconcentration factors of ca. 50 were achievable, thereby allowing determination of the isotopes TA interest at concentrations below 1 pg/L (i.e., 1 pCi/L of {sup 226}Ra). The internal and external reproducibility of these measurements will be described, as will their comparability to results obtained by radiochemical means. The authors will also discuss the utility of this procedure for environmental surveillance and the examination of uranium series disequilibria in natural aqueous systems.

  10. Trace Elemental Variation in Dosidicus Gigas Statoliths Using LA-ICP-MS 

    E-Print Network [OSTI]

    Arbuckle, Nancy 1980-

    2012-08-24

    -18 represent the scores of specimen collected in the Galapagos with a 95% confidence ellipse displayed in green. Markers 19-29 represent scores of specimen collected near Seattle with a blue 95% confidence ellipse. ...... 71? Figure 27. Scatterplot... strontium concentrations higher than ambient seawater. While seawater Sr:Ca remains constant with temperature, the three species of corals each demonstrated different rates of strontium incorporation that varied inversely with temperature. Additionally...

  11. EPOD Solar Wales Ltd formerly ICP Solar Technologies Ltd | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstrumentsAreaforInformationBrownfieldsEPIR Technologies

  12. Environmental Cost Analysis 

    E-Print Network [OSTI]

    Edge, D.

    2000-01-01

    Analysis David Edge Texas Natural Resource Conservation Commission 131 ESL-IE-00-04-21 Proceedings from the Twenty-second National Industrial Energy Technology Conference, Houston, TX, April 5-6, 2000 Tuas Natural Resource Conservation Cor...DDliuion Environmental Cost Analysis Presented By David Edge Determine the Costs c> Input co Output c> Hidden c> Capital (non recurring) Envirormenlal Cost Analy.;is "There has to be a measurable result ofimprovement and it should be tied to dollars...

  13. Standard practices for dissolving glass containing radioactive and mixed waste for chemical and radiochemical analysis

    E-Print Network [OSTI]

    American Society for Testing and Materials. Philadelphia

    2000-01-01

    1.1 These practices cover techniques suitable for dissolving glass samples that may contain nuclear wastes. These techniques used together or independently will produce solutions that can be analyzed by inductively coupled plasma atomic emission spectroscopy (ICP-AES), inductively coupled plasma mass spectrometry (ICP-MS), atomic absorption spectrometry (AAS), radiochemical methods and wet chemical techniques for major components, minor components and radionuclides. 1.2 One of the fusion practices and the microwave practice can be used in hot cells and shielded hoods after modification to meet local operational requirements. 1.3 The user of these practices must follow radiation protection guidelines in place for their specific laboratories. 1.4 Additional information relating to safety is included in the text. 1.5 The dissolution techniques described in these practices can be used for quality control of the feed materials and the product of plants vitrifying nuclear waste materials in glass. 1.6 These pr...

  14. Chernobyl Deconstruction ALARA Analysis

    SciTech Connect (OSTI)

    Shipler, Dillard B.; Batiy, Valeriy; Povlovsky, Leonid; Schmidt, John P.; Schmieman, Eric A.

    2004-03-24

    The Bechtel/EDF/Battelle Consortium has recently completed the conceptual design for the Chernobyl New Safe Confinement (NSC). Battelle has the scope of work related to environment and safety of the design. As part of the safety analysis, an ALARA analysis was performed for deconstruction of the major, unstable elements of the Shelter Object over the destroyed Unit 4 of the reactor complex. The major elements addressed in the analysis included the current roof sections and the major beams supporting the roof sections. The analysis was based on the existing configuration of the Shelter Object, the developing conceptual design of the NSC arch structure, the developing conceptual design of the facilities within and associated with the NSC (including handling and processing of deconstructed elements, and waste management), and existing Ukranian regulations and working processes and procedures. KSK (a Ukranian Consortium) is a subcontractor to the Bechtel/EDF/Battelle Consortium and performed much of the dose analysis. The analysis concluded that ALARA could be achieved with appropriate implementation of existing Ukrainian regulations and procedures, and developing conceptual design criteria and features.

  15. Production, Storage, and FC Analysis

    Broader source: Energy.gov [DOE]

    Presentation on Production, Storage, and FC Analysis to the DOE Systems Analysis Workshop held in Washington, D.C. July 28-29, 2004 to discuss and define role of systems analysis in DOE Hydrogen Program.

  16. Multivariate Analysis with Optimal Scaling

    E-Print Network [OSTI]

    Jan de Leeuw

    2011-01-01

    Bentler and D.G. Weeks. Multivariate Analysis with LatentB26:211–252, 1964. MULTIVARIATE ANALYSIS WITH OPTIMALGi? System of Nonlinear Multivariate Analysis. In E. Diday,

  17. Image texture analysis of elastograms 

    E-Print Network [OSTI]

    Hussain, Fasahat

    1999-01-01

    and developed to make it a commercial product. 'This research applies image texture analysis to computer generated elastograms to obtain effective texture features. Four image analysis techniques, no-occurrence statistics, wavelet decomposition, frontal analysis...

  18. Inception report and Gap analysis

    E-Print Network [OSTI]

    Inception report and Gap analysis Boiler inspection Riga, June 2004 #12;Inception report and gap analysis ­ boiler inspection Table of Content 1 INTRODUCTION ................................................................................................................................. 3 2 BOILER INSTALLATIONS ­ GAP ANALYSIS

  19. Cooperative Diversity in Interference Limited Wireless Networks

    E-Print Network [OSTI]

    Liang, Ben

    -rate and energy efficiency, based on network size, relay availability, node decoding threshold, and destination environments, using the resources of other peer nodes can help improve the network performance. In this context channel first introduced by van der Meulen leads to a communica- tion scheme where instead of point

  20. Suppression of automotive radio frequency interference 

    E-Print Network [OSTI]

    McLaughlin, Cleon Crosby

    1969-01-01

    of the spark plug and dlstribijtor gap brcakdo'sns is r epr educed by sc'ri tchi ng from an equiva- lent capacj cor befo'. gap Lreakdo'sn to an equivalent gap res j stance aiel:i ndu'':!nce dur. , nrJ b i akdo~sn This capa- bil i tV i ' . &ne &of the major... into lumped clem!'. nts and by providing equiva. 'ent cir uits for the disirib!!tor and spark plug gapa in both co! ducting and non ? conducti. ng states. Unfor unatcly, the state variable rr. odel recuires a grea. i deal of computer time in order...

  1. Tobacco Industry Interference with Tobacco Control

    E-Print Network [OSTI]

    World Health Organization

    2009-01-01

    2002, 11:112–118. 118. Arthur D. Little International Inc.management consulting firm Arthur D. Little International to

  2. Tobacco Industry Interference with Tobacco Control

    E-Print Network [OSTI]

    World Health Organization

    2009-01-01

    will be published in 2010 as ISO 26000. According to the ISOthe current draft (4.2) of the ISO 26000 standard on social

  3. Interference management in wireless cellular networks 

    E-Print Network [OSTI]

    Burchardt, Harald Peter

    2013-07-01

    In wireless networks, there is an ever-increasing demand for higher system throughputs, along with growing expectation for all users to be available to multimedia and Internet services. This is especially difficult to ...

  4. Passive millimeter wave differential interference contrast polarimetry

    DOE Patents [OSTI]

    Bernacki, Bruce E; Kelly, James F; Sheen, David M; Tedeschi, Jonathan R; Hall, Thomas E; Hatchell, Brian K; Valdez, Patrick; McMakin, Douglas L

    2014-04-29

    Differential polarization imaging systems include an axicon configured to provide a displacement of ray bundles associated with different image patches. The displaced ray bundles are directed to antenna horns and orthomode transducers so as to provide outputs correspond to orthogonal linear states of polarization (SOPs). The outputs are directed to a differential radiometer so that Stokes parameter differences between image patches can be obtained. The ray bundle displacements can be selected to correspond to a mechanical spacing of antenna horns. In some examples, ray bundle displacement corresponds to a displacement less than the diffraction limit.

  5. Protecting bipartite entanglement by quantum interferences

    SciTech Connect (OSTI)

    Das, Sumanta [Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078 (United States); Institute for Quantum Science and Engineering and Department of Physics, Texas A and M University, College Station, Texas 77843 (United States); Agarwal, G. S. [Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078 (United States)

    2010-05-15

    We show that vacuum-induced coherence in three-level atomic systems can lead to preservation of bipartite entanglement when two such atoms are prepared as two initially entangled qubits, each independently interacting with their respective vacuum reservoirs. We explicitly calculate the time evolution of concurrence for two different Bell states and show that a large amount of entanglement can survive in the long time limit. The amount of entanglement left between the two qubits depends strongly on the ratio of the nonorthogonal transitions in each qubit and can be more than 50%. Moreover, we find that as a consequence of vacuum-induced coherence, sudden death of entanglement is prevented for an initial mixed entangled state of the qubits.

  6. Navigation Accuracy and Interference Rejection for an

    E-Print Network [OSTI]

    Stanford University

    .S. in Mechanical and Aerospace Engineering from Cornell University (1996), he spent one year working in the turbine on positioning and navigation technologies for underwater robots. Dr. Per Enge is a Professor of Aeronautics

  7. Adaptive Array Processing for GPS Interference Rejection

    E-Print Network [OSTI]

    Stanford University

    University (1996), he spent one year working in the turbine aerodynamics group of the commercial engine for underwater robots. Dr. Per Enge is a Professor of Aeronautics and Astronautics at Stanford University, where

  8. Electromagnetic interference filter for automotive electrical systems

    DOE Patents [OSTI]

    Herron, Nicholas Hayden; Carlson, Douglas S; Tang, David; Korich, Mark D

    2013-07-02

    A filter for an automotive electrical system includes a substrate having first and second conductive members. First and second input terminals are mounted to the substrate. The first input terminal is electrically connected to the first conductive member, and the second input terminal is electrically connected to the second conductive member. A plurality of capacitors are mounted to the substrate. Each of the capacitors is electrically connected to at least one of the first and second conductive members. First and second power connectors are mounted to the substrate. The first power connector is electrically connected to the first conductive member, and the second power connector is electrically connected to the second conductive member. A common mode choke is coupled to the substrate and arranged such that the common mode choke extends around at least a portion of the substrate and the first and second conductive members.

  9. FNH302ChemAnalysisModule Food Analysis

    E-Print Network [OSTI]

    FNH302ChemAnalysisModule 2013w 1 FNH 302 Food Analysis Module I - Analysis of Chemical Composition Description: Principles of and procedures for the analysis of the chemical components of food including of the major food components (moisture, ash, nitrogen or protein, lipid, carbohydrate) Introduction

  10. Introduction to Network Analysis 1 Introduction to Network Analysis

    E-Print Network [OSTI]

    Safro, Ilya

    Networks from networksandservers.blogspot.com #12;Introduction to Network Analysis 7 Natural gas major

  11. Contamination analysis unit

    DOE Patents [OSTI]

    Gregg, H.R.; Meltzer, M.P.

    1996-05-28

    The portable Contamination Analysis Unit (CAU) measures trace quantities of surface contamination in real time. The detector head of the portable contamination analysis unit has an opening with an O-ring seal, one or more vacuum valves and a small mass spectrometer. With the valve closed, the mass spectrometer is evacuated with one or more pumps. The O-ring seal is placed against a surface to be tested and the vacuum valve is opened. Data is collected from the mass spectrometer and a portable computer provides contamination analysis. The CAU can be used to decontaminate and decommission hazardous and radioactive surfaces by measuring residual hazardous surface contamination, such as tritium and trace organics. It provides surface contamination data for research and development applications as well as real-time process control feedback for industrial cleaning operations and can be used to determine the readiness of a surface to accept bonding or coatings. 1 fig.

  12. Contamination analysis unit

    DOE Patents [OSTI]

    Gregg, Hugh R. (Livermore, CA); Meltzer, Michael P. (Livermore, CA)

    1996-01-01

    The portable Contamination Analysis Unit (CAU) measures trace quantifies of surface contamination in real time. The detector head of the portable contamination analysis unit has an opening with an O-ring seal, one or more vacuum valves and a small mass spectrometer. With the valve closed, the mass spectrometer is evacuated with one or more pumps. The O-ring seal is placed against a surface to be tested and the vacuum valve is opened. Data is collected from the mass spectrometer and a portable computer provides contamination analysis. The CAU can be used to decontaminate and decommission hazardous and radioactive surface by measuring residual hazardous surface contamination, such as tritium and trace organics It provides surface contamination data for research and development applications as well as real-time process control feedback for industrial cleaning operations and can be used to determine the readiness of a surface to accept bonding or coatings.

  13. Storage battery systems analysis

    SciTech Connect (OSTI)

    Murphy, K.D.

    1982-01-01

    Storage Battery Systems Analysis supports the battery Exploratory Technology Development and Testing Project with technical and economic analysis of battery systems in various end-use applications. Computer modeling and simulation techniques are used in the analyses. Analysis objectives are achieved through both in-house efforts and outside contracts. In-house studies during FY82 included a study of the relationship between storage battery system reliability and cost, through cost-of-investment and cost-of-service interruption inputs; revision and update of the SOLSTOR computer code in standard FORTRAN 77 form; parametric studies of residential stand-alone photovoltaic systems using the SOLSTOR code; simulation of wind turbine collector/storage battery systems for the community of Kalaupapa, Molokai, Hawaii.

  14. Cost analysis guidelines

    SciTech Connect (OSTI)

    Strait, R.S.

    1996-01-10

    The first phase of the Depleted Uranium Hexafluoride Management Program (Program)--management strategy selection--consists of several program elements: Technology Assessment, Engineering Analysis, Cost Analysis, and preparation of an Environmental Impact Statement (EIS). Cost Analysis will estimate the life-cycle costs associated with each of the long-term management strategy alternatives for depleted uranium hexafluoride (UF6). The scope of Cost Analysis will include all major expenditures, from the planning and design stages through decontamination and decommissioning. The costs will be estimated at a scoping or preconceptual design level and are intended to assist decision makers in comparing alternatives for further consideration. They will not be absolute costs or bid-document costs. The purpose of the Cost Analysis Guidelines is to establish a consistent approach to analyzing of cost alternatives for managing Department of Energy`s (DOE`s) stocks of depleted uranium hexafluoride (DUF6). The component modules that make up the DUF6 management program differ substantially in operational maintenance, process-options, requirements for R and D, equipment, facilities, regulatory compliance, (O and M), and operations risk. To facilitate a consistent and equitable comparison of costs, the guidelines offer common definitions, assumptions or basis, and limitations integrated with a standard approach to the analysis. Further, the goal is to evaluate total net life-cycle costs and display them in a way that gives DOE the capability to evaluate a variety of overall DUF6 management strategies, including commercial potential. The cost estimates reflect the preconceptual level of the designs. They will be appropriate for distinguishing among management strategies.

  15. Cogeneration Project Analysis Update 

    E-Print Network [OSTI]

    Robinson, A. M.; Garcia, L. N.

    1987-01-01

    -1 ------------ COGENERATION PROJECT ANALYSIS UPDATE by Arthur M. Robinson & Luis N. Garcia ROBINSON & GARCIA Energy Consultants P. O. Box 1203, Destrehan, LA 70047 ABSTRACT Not long ago, to evaluate the feasibility of a cogeneration project, a simple economic analysis... pressure steam produced from the turbine exhaust. And fed to an extraction condensing steam turbine, coupled to a second generator. A depiction with typical values is shown in Figure 2. ~) ~ EL.eCTRICJTY FRCM (iE/.)eRATORS BoiLE.R GAS / Fl/EL R...

  16. Germanium-76 Sample Analysis

    SciTech Connect (OSTI)

    Kouzes, Richard T.; Engelhard, Mark H.; Zhu, Zihua

    2011-04-01

    The MAJORANA DEMONSTRATOR is a large array of ultra-low background high-purity germanium detectors, enriched in 76Ge, designed to search for zero-neutrino double-beta decay (0???). The DEMONSTRATOR will utilize 76Ge from Russia, and the first one gram sample was received from the supplier for analysis on April 24, 2011. The Environmental Molecular Sciences facility, a DOE user facility at PNNL, was used to make the required isotopic and chemical purity measurements that are essential to the quality assurance for the MAJORANA DEMONSTRATOR. The results of this first analysis are reported here.

  17. STEP Utility Bill Analysis Report

    Broader source: Energy.gov [DOE]

    STEP Utility Bill Analysis Report, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  18. Industry Analysis January 2012

    E-Print Network [OSTI]

    Abolmaesumi, Purang

    ;8 Conference Board E-Library ­ Canadian industries, economic trends & forecasts ­ national, provincial1 CHEE 906 Industry Analysis January 2012 Constance Adamson, Stauffer Library adamsonc for both Industry and Company research ­ they build on each other #12;3 Where are they? · Library website

  19. Country Analysis Briefs

    Reports and Publications (EIA)

    2028-01-01

    An ongoing compilation of country energy profiles. The Energy Information Administration (EIA) maintains Country Analysis Briefs (CABs) for specific countries that are important to world energy markets, including members of the Organization of the Petroleum Exporting Countries (OPEC), major non-OPEC oil producers, major energy transit countries, major energy consumers, and other areas of current interest to energy analysts and policy makers.

  20. Electronic Mail Analysis Capability

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

    2001-01-08

    Establishes the pilot program to test the Department of Energy (DOE) Electronic Mail Analysis Capability (EMAC), which will be used to monitor and analyze outgoing and incoming electronic mail (e-mail) from the National Nuclear Security Administration (NNSA) and DOE laboratories that are engaged in nuclear weapons design or work involving special nuclear material. No cancellation.

  1. Exergy Analysis Ron Zevenhoven

    E-Print Network [OSTI]

    Zevenhoven, Ron

    ); Exergy expresses the amount of mechanical work necessary to produce a material in its specified stateExergy Analysis Ron Zevenhoven Åbo Akademi University Thermal and Flow Engineering Laboratory and Flow Engineering, Piispankatu 8, 20500 Turku 2/102 1.1 Exergy vs. Energy #12;11 jan 15 Åbo Akademi Univ

  2. Competitor Analysis Company Description

    E-Print Network [OSTI]

    Dahl, David B.

    of research tools and methodologies to complete the information gathering and analysis of the emerging green innovation, product quality and safety. Short Project Name: Green Chemical Movement and Chemical Production advances in chemical production from green/environmentally friendly resources. Conduct research and analyze

  3. Radiative Flux Analysis

    SciTech Connect (OSTI)

    Long, Chuck

    2008-05-14

    The Radiative Flux Analysis is a technique for using surface broadband radiation measurements for detecting periods of clear (i.e. cloudless) skies, and using the detected clear-sky data to fit functions which are then used to produce continuous clear-sky estimates. The clear-sky estimates and measurements are then used in various ways to infer cloud macrophysical properties.

  4. CHEMISTRY 330 QUANTITATIVE ANALYSIS

    E-Print Network [OSTI]

    Nickrent, Daniel L.

    and evaluation of error, basic chemical equilibria, acid-base equilibria, solubility product constant equilibria of spectrophotometric analysis, atomic absorption spectroscopy, methods of separation, gas and liquid chromatography to develop and apply topics discussed in lecture; short quizzes may be used to assess individual learning

  5. Shot loading trainer analysis

    SciTech Connect (OSTI)

    Peterson, T.K.

    1995-02-15

    This document presents the results from the analysis of the shot loading trainer (SLT). This device will be used to test the procedure for installing shot into the annulus of the Project W-320 shipping container. To ensure that the shot is installed uniformly around the container, vibrators will be used to settle the shot. The SLT was analyzed to ensure that it would not jeopardize worker safety during operation. The results from the static analysis of the SLT under deadweight and vibrator operating loads show that the stresses in the SLT are below code allowables. The results from the modal analysis show that the natural frequencies of the SLT are far below the operating frequencies of the vibrators, provided the SLT is mounted on pneumatic tires. The SLT was also analyzed for wind, seismic, deadweight, and moving/transporting loads. Analysis of the SLT is in accordance with SDC-4.1 for safety class 3 structures (DOE-RL 1993) and the American Institute of Steel Construction (AISC) Manual of Steel Construction (AISC 1989).

  6. Regional Analysis Briefs

    Reports and Publications (EIA)

    2028-01-01

    Regional Analysis Briefs (RABs) provide an overview of specific regions that play an important role in world energy markets, either directly or indirectly. These briefs cover areas that are currently major producers (Caspian Sea), have geopolitical importance (South China Sea), or may have future potential as producers or transit areas (East Africa, Eastern Mediterranean).

  7. NID Copper Sample Analysis

    SciTech Connect (OSTI)

    Kouzes, Richard T.; Zhu, Zihua

    2011-09-12

    The current focal point of the nuclear physics program at PNNL is the MAJORANA DEMONSTRATOR, and the follow-on Tonne-Scale experiment, a large array of ultra-low background high-purity germanium detectors, enriched in 76Ge, designed to search for zero-neutrino double-beta decay (0???). This experiment requires the use of germanium isotopically enriched in 76Ge. The MAJORANA DEMONSTRATOR is a DOE and NSF funded project with a major science impact. The DEMONSTRATOR will utilize 76Ge from Russia, but for the Tonne-Scale experiment it is hoped that an alternate technology, possibly one under development at Nonlinear Ion Dynamics (NID), will be a viable, US-based, lower-cost source of separated material. Samples of separated material from NID require analysis to determine the isotopic distribution and impurities. DOE is funding NID through an SBIR grant for development of their separation technology for application to the Tonne-Scale experiment. The Environmental Molecular Sciences facility (EMSL), a DOE user facility at PNNL, has the required mass spectroscopy instruments for making isotopic measurements that are essential to the quality assurance for the MAJORANA DEMONSTRATOR and for the development of the future separation technology required for the Tonne-Scale experiment. A sample of isotopically separated copper was provided by NID to PNNL in January 2011 for isotopic analysis as a test of the NID technology. The results of that analysis are reported here. A second sample of isotopically separated copper was provided by NID to PNNL in August 2011 for isotopic analysis as a test of the NID technology. The results of that analysis are also reported here.

  8. Residual gas analysis device

    DOE Patents [OSTI]

    Thornberg, Steven M. (Peralta, NM)

    2012-07-31

    A system is provided for testing the hermeticity of a package, such as a microelectromechanical systems package containing a sealed gas volume, with a sampling device that has the capability to isolate the package and breach the gas seal connected to a pulse valve that can controllably transmit small volumes down to 2 nanoliters to a gas chamber for analysis using gas chromatography/mass spectroscopy diagnostics.

  9. Automated Job Hazards Analysis

    Broader source: Energy.gov [DOE]

    AJHA Program - The Automated Job Hazard Analysis (AJHA) computer program is part of an enhanced work planning process employed at the Department of Energy's Hanford worksite. The AJHA system is routinely used to performed evaluations for medium and high risk work, and in the development of corrective maintenance work packages at the site. The tool is designed to ensure that workers are fully involved in identifying the hazards, requirements, and controls associated with tasks.

  10. Future Climate Analysis

    SciTech Connect (OSTI)

    James Houseworth

    2001-10-12

    This Analysis/Model Report (AMR) documents an analysis that was performed to estimate climatic variables for the next 10,000 years by forecasting the timing and nature of climate change at Yucca Mountain (YM), Nevada (Figure 1), the site of a potential repository for high-level radioactive waste. The future-climate estimates are based on an analysis of past-climate data from analog meteorological stations, and this AMR provides the rationale for the selection of these analog stations. The stations selected provide an upper and a lower climate bound for each future climate, and the data from those sites will provide input to the infiltration model (USGS 2000) and for the total system performance assessment for the Site Recommendation (TSPA-SR) at YM. Forecasting long-term future climates, especially for the next 10,000 years, is highly speculative and rarely attempted. A very limited literature exists concerning the subject, largely from the British radioactive waste disposal effort. The discussion presented here is one method, among many, of establishing upper and lower bounds for future climate estimates. The method used here involves selecting a particular past climate from many past climates, as an analog for future climate. Other studies might develop a different rationale or select other past climates resulting in a different future climate analog. Revision 00 of this AMR was prepared in accordance with the ''Work Direction and Planning Document for Future Climate Analysis'' (Peterman 1999) under Interagency Agreement DE-AI08-97NV12033 with the U.S. Department of Energy (DOE). The planning document for the technical scope, content, and management of ICN 01 of this AMR is the ''Technical Work Plan for Unsaturated Zone (UZ) Flow and Transport Process Model Report'' (BSC 2001a). The scope for the TBV resolution actions in this ICN is described in the ''Technical Work Plan for: Integrated Management of Technical Product Input Department''. (BSC 2001b, Addendum B, Section 4.1).

  11. SAMPLING AND ANALYSIS PROTOCOLS

    SciTech Connect (OSTI)

    Jannik, T; P Fledderman, P

    2007-02-09

    Radiological sampling and analyses are performed to collect data for a variety of specific reasons covering a wide range of projects. These activities include: Effluent monitoring; Environmental surveillance; Emergency response; Routine ambient monitoring; Background assessments; Nuclear license termination; Remediation; Deactivation and decommissioning (D&D); and Waste management. In this chapter, effluent monitoring and environmental surveillance programs at nuclear operating facilities and radiological sampling and analysis plans for remediation and D&D activities will be discussed.

  12. Text analysis methods, text analysis apparatuses, and articles of manufacture

    DOE Patents [OSTI]

    Whitney, Paul D; Willse, Alan R; Lopresti, Charles A; White, Amanda M

    2014-10-28

    Text analysis methods, text analysis apparatuses, and articles of manufacture are described according to some aspects. In one aspect, a text analysis method includes accessing information indicative of data content of a collection of text comprising a plurality of different topics, using a computing device, analyzing the information indicative of the data content, and using results of the analysis, identifying a presence of a new topic in the collection of text.

  13. NID Copper Sample Analysis

    SciTech Connect (OSTI)

    Kouzes, Richard T.; Zhu, Zihua

    2011-02-01

    The current focal point of the nuclear physics program at PNNL is the MAJORANA DEMONSTRATOR, and the follow-on Tonne-Scale experiment, a large array of ultra-low background high-purity germanium detectors, enriched in 76Ge, designed to search for zero-neutrino double-beta decay (0???). This experiment requires the use of germanium isotopically enriched in 76Ge. The DEMONSTRATOR will utilize 76Ge from Russia, but for the Tonne-Scale experiment it is hoped that an alternate technology under development at Nonlinear Ion Dynamics (NID) will be a viable, US-based, lower-cost source of separated material. Samples of separated material from NID require analysis to determine the isotopic distribution and impurities. The MAJORANA DEMONSTRATOR is a DOE and NSF funded project with a major science impact. DOE is funding NID through an SBIR grant for development of their separation technology for application to the Tonne-Scale experiment. The Environmental Molecular Sciences facility (EMSL), a DOE user facility at PNNL, has the required mass spectroscopy instruments for making these isotopic measurements that are essential to the quality assurance for the MAJORANA DEMONSTRATOR and for the development of the future separation technology required for the Tonne-Scale experiment. A sample of isotopically separated copper was provided by NID to PNNL for isotopic analysis as a test of the NID technology. The results of that analysis are reported here.

  14. FUTURE CLIMATE ANALYSIS

    SciTech Connect (OSTI)

    R.M. Forester

    2000-03-14

    This Analysis/Model Report (AMR) documents an analysis that was performed to estimate climatic variables for the next 10,000 years by forecasting the timing and nature of climate change at Yucca Mountain (YM), Nevada (Figure l), the site of a potential repository for high-level radioactive waste. The future-climate estimates are based on an analysis of past-climate data from analog meteorological stations, and this AMR provides the rationale for the selection of these analog stations. The stations selected provide an upper and a lower climate bound for each future climate, and the data from those sites will provide input to the infiltration model (USGS 2000) and for the total system performance assessment for the Site Recommendation (TSPA-SR) at YM. Forecasting long-term future climates, especially for the next 10,000 years, is highly speculative and rarely attempted. A very limited literature exists concerning the subject, largely from the British radioactive waste disposal effort. The discussion presented here is one method, among many, of establishing upper and lower bounds for future climate estimates. The method used here involves selecting a particular past climate from many past climates, as an analog for future climate. Other studies might develop a different rationale or select other past climates resulting in a different future climate analog.

  15. Future Climate Analysis

    SciTech Connect (OSTI)

    C. G. Cambell

    2004-09-03

    This report documents an analysis that was performed to estimate climatic variables for the next 10,000 years by forecasting the timing and nature of climate change at Yucca Mountain, Nevada, the site of a repository for spent nuclear fuel and high-level radioactive waste. The future-climate estimates are based on an analysis of past-climate data from analog meteorological stations, and this report provides the rationale for the selection of these analog stations. The stations selected provide an upper and a lower climate bound for each future climate, and the data from those sites will provide input to the following reports: ''Simulation of Net Infiltration for Present-Day and Potential Future Climates'' (BSC 2004 [DIRS 170007]), ''Total System Performance Assessment (TSPA) Model/Analysis for the License Application'' (BSC 2004 [DIRS 168504]), ''Features, Events, and Processes in UZ Flow and Transport'' (BSC 2004 [DIRS 170012]), and ''Features, Events, and Processes in SZ Flow and Transport'' (BSC 2004 [DIRS 170013]). Forecasting long-term future climates, especially for the next 10,000 years, is highly speculative and rarely attempted. A very limited literature exists concerning the subject, largely from the British radioactive waste disposal effort. The discussion presented here is one available forecasting method for establishing upper and lower bounds for future climate estimates. The selection of different methods is directly dependent on the available evidence used to build a forecasting argument. The method used here involves selecting a particular past climate from many past climates, as an analog for future climate. While alternative analyses are possible for the case presented for Yucca Mountain, the evidence (data) used would be the same and the conclusions would not be expected to drastically change. Other studies might develop a different rationale or select other past climates resulting in a different future climate analog. Other alternative approaches could include simulation of climate over the 10,000-year period; however, this modeling extrapolation is well beyond the bounds of current scientific practice and would not provide results with better confidence. A corroborative alternative approach may be found in ''Future Climate Analysis-10,000 Years to 1,000,000 Years After Present'' (Sharpe 2003 [DIRS 161591]). The current revision of this report is prepared in accordance with ''Technical Work Plan for: Unsaturated Zone Flow Analysis and Model Report Integration'' (BSC 2004 [DIRS 169654]).

  16. Systems Analysis Workshop Welcome & Introductions

    Broader source: Energy.gov [DOE]

    Welcome and introduction to the DOE Systems Analysis Workshop held in Washington, D.C. July 28-29, 2004 to discuss and define role of systems analysis in DOE Hydrogen Program.

  17. NREL: Energy Analysis - Ben Maples

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

    Maples Photo of Ben Maples Ben Maples is a member of the Technology Systems and Sustainability Analysis Group in the Strategic Energy Analysis Center. Engineer On staff since May...

  18. NREL: Energy Analysis - Jenny Melius

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

    of the Data Analysis and Visualization Group in the Strategic Energy Analysis Center. GIS Scientist II On staff since May 2011 Phone number: 303-275-4661 E-mail:...

  19. Ontological Analysis P. B. Ladkin

    E-Print Network [OSTI]

    Ladkin, Peter B.

    such as HAZOP or FMEA cannot answer CQ. Ontological Analysis, OA, is a method for developing safety requirements

  20. User's manual for ANALYZE: a variable-rate, multiple-well, least-squares matching routine for well-test analysis

    SciTech Connect (OSTI)

    McEdwards, D.G.; Benson, S.M.

    1981-07-01

    ANALYZE is a history-matching program designed for pressure-transient analysis of well tests in single-phase, fluid-saturated reservoirs. Both interference tests and production tests can be analyzed to yield reservoir transmissivity (kh/..mu..), storativity (phi ch), and hydrologic boundaries. An analytic solution is used to calculate the pressure drawdown/buildup in an idealized reservoir system. A schematic of the basic reservoir/well model assumed by the computational algorithm is shown. The reservoir is assumed to be an isothermal, isotropic, homogeneous, porous medium of constant thickness and infinite areal extent. The production well is modeled as a line source which fully penetrates the reservoir. The flow into the well is radial and uniformly distributed over the height of the well (gravity effects neglected).

  1. Model-Driven Risk Analysis

    E-Print Network [OSTI]

    Stølen, Ketil

    1 123 Model-Driven Risk Analysis The CORAS Approach | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | >springer.com ISBN 978-3-642-12322-1 Model-DrivenRiskAnalysis Mass Soldal Lund Bjørnar Solhaug Ketil Stølen Lund·Solhaug Stølen Lund · Solhaug · Stølen Model-Driven Risk Analysis The term"risk"is known from many

  2. Arsenic in Bangladesh Decision analysis

    E-Print Network [OSTI]

    Gelman, Andrew

    Arsenic in Bangladesh Decision analysis Regression models Take-home points Arsenic and old models 2007 Andrew Gelman Arsenic and old models #12;Arsenic in Bangladesh Decision analysis Regression models Take-home points Contents Aresenic in Bangladesh Decision analysis Regression models Andrew Gelman

  3. Finite Element Analysis Skateboard Truck

    E-Print Network [OSTI]

    De, Suvranu

    Finite Element Analysis Of a Skateboard Truck #12;2 Executive Summary: Engineering is and always is an element of the `truck,' which holds the wheels. Finite Element analysis will be conducted on this piece a combination of SolidWorks (for modeling) and ABAQUS (for finite element analysis). It is evident from

  4. Renewable Fuels Legislation Impact Analysis

    Reports and Publications (EIA)

    2005-01-01

    An analysis based on an extension of the ethanol supply curve in our model to allow for enough ethanol production to meet the requirements of S. 650. This analysis provides an update of the May 23, 2005 analysis, with revised ethanol production and cost assumptions.

  5. Cross-impacts analysis development and energy policy analysis applications

    SciTech Connect (OSTI)

    Roop, J.M.; Scheer, R.M.; Stacey, G.S.

    1986-12-01

    Purpose of this report is to describe the cross-impact analysis process and microcomputer software developed for the Office of Policy, Planning, and Analysis (PPA) of DOE. First introduced in 1968, cross-impact analysis is a technique that produces scenarios of future conditions and possibilities. Cross-impact analysis has several unique attributes that make it a tool worth examining, especially in the current climate when the outlook for the economy and several of the key energy markets is uncertain. Cross-impact analysis complements the econometric, engineering, systems dynamics, or trend approaches already in use at DOE. Cross-impact analysis produces self-consistent scenarios in the broadest sense and can include interaction between the economy, technology, society and the environment. Energy policy analyses that couple broad scenarios of the future with detailed forecasting can produce more powerful results than scenario analysis or forecasts can produce alone.

  6. Iron, zinc, and manganese distribution in mature soybean seeds

    E-Print Network [OSTI]

    Cvitanich, Cristina; Przyby?owicz, Wojciech J.; Mesjasz-Przyby?owicz, Jolanta; Blair, Matthew W.; Jensen, Erik Ø.; Stougaard, Jens

    2009-01-01

    Augustyniak M, et al. (2005) Micro-PIXE in ecophysiology. Xsensitive, non-destructive micro-PIXE (Particle Induced X-ICP-AES) in axial mode. Micro-PIXE analysis. Both dry and

  7. Application And Evaluation Of Biomagnetic And Biochemical Monitoring...

    Open Energy Info (EERE)

    of these leaves show promise as a bio-indicator of volcanic gas, aerosol and ash deposition on the flanks of Mt. Etna. For 2008, ICP-MS analysis of the elemental...

  8. Arundo Donax Analysis Report

    SciTech Connect (OSTI)

    Corrie I. Nichol, Ph.D.; Tyler L. Westover, Ph.D.

    2012-01-01

    This is a summary report of preliminary analysis conducted on Arundo Donax. Arundo Donax was received from Greenwood Resources via Portland General Electric. PGE plans to transition a coal-fired boiler to 100% biomass by 2020, and has partnered with EPRI and INL to conduct the necessary testing and development to understand what needs to take place to make this transition. Arundo Donax is a promising energy crop for biopower, and is as yet relatively untested and uncharacterized. The INL has begun initial characterization of this material, and this summary report presents the initial findings.

  9. Dynamic cable analysis models

    SciTech Connect (OSTI)

    Palo, P.A.; Meggitt, D.J.; Nordell, W.J.

    1983-05-01

    This paper presents a summary of the development and validation of undersea cable dynamics computer models by the Naval Civil Engineering Laboratory (NCEL) under the sponsorship of the Naval Facilities Engineering Command. These models allow for the analysis of both small displacement (strumming) and large displacement (static and dynamic) deformations of arbitrarily configured cable structures. All of the large displacement models described in this paper are available to the public. This paper does not emphasize the theoretical development of the models (this information is available in other references) but emphasizes the various features of the models, the comparisons between model output and experimental data, and applications for which the models have been used.

  10. Cascadia Analysis | NISAC

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B LReports fromSheetsCascadia Analysis content top Cascadia

  11. Sandia Energy - Analysis

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust, High-Throughput Analysis ofSample SULI ProgramPhysical Society Names Four Sandians

  12. Sandia Energy - Analysis

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust, High-Throughput Analysis ofSample SULI ProgramPhysical Society Names Four

  13. Sandia Energy - Systems Analysis

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust, High-Throughput AnalysisSinkholeCapabilities General overview of the T3R2 device.

  14. Sandia Energy - Systems Analysis

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust, High-Throughput AnalysisSinkholeCapabilities General overview of the T3R2 device.DETL

  15. Sandia Energy » Analysis

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust, High-Throughput AnalysisSinkholeCapabilitiesThe Sandia-patentedcwdd Homesspope

  16. NREL: Innovation Impact - Analysis

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesof EnergyY-12Working withPhoto of the EnergyAnalysis Menu Home

  17. Sandia Energy - Systems Analysis

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)GeothermalFuel Magnetization andStochastic HomeSunShot HomeAnalysis Home

  18. Sandia Energy - Uncertainty Analysis

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)GeothermalFuel MagnetizationTransportation EnergyUncertainty Analysis Home

  19. Sandia Energy - Analysis

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) byMultidayAlumni >Scientific andInstituteAdvancedAdvancedAnalysis Home

  20. Climate Analysis The central theme of the Climate Analysis Division is the analysis and

    E-Print Network [OSTI]

    Haak, Hein

    Climate Analysis The central theme of the Climate Analysis Division is the analysis and diagnosis of the climate and its variability on the basis of observations and models. The objective of this research of climate change scenarios for impact studies using downscaling techniques. The research can be summarised

  1. Crude Oil Analysis Database

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Shay, Johanna Y.

    The composition and physical properties of crude oil vary widely from one reservoir to another within an oil field, as well as from one field or region to another. Although all oils consist of hydrocarbons and their derivatives, the proportions of various types of compounds differ greatly. This makes some oils more suitable than others for specific refining processes and uses. To take advantage of this diversity, one needs access to information in a large database of crude oil analyses. The Crude Oil Analysis Database (COADB) currently satisfies this need by offering 9,056 crude oil analyses. Of these, 8,500 are United States domestic oils. The database contains results of analysis of the general properties and chemical composition, as well as the field, formation, and geographic location of the crude oil sample. [Taken from the Introduction to COAMDATA_DESC.pdf, part of the zipped software and database file at http://www.netl.doe.gov/technologies/oil-gas/Software/database.html] Save the zipped file to your PC. When opened, it will contain PDF documents and a large Excel spreadsheet. It will also contain the database in Microsoft Access 2002.

  2. Analysis of Geothermal Reservoir Stimulation using Geomechanics...

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

    using Geomechanics-Based Stochastic Analysis of Injection-Induced Seismicity Analysis of Geothermal Reservoir Stimulation using Geomechanics-Based Stochastic Analysis of...

  3. Analysis and design of reliable nanometer circuits

    E-Print Network [OSTI]

    Zhao, Chong

    2007-01-01

    OF CALIFORNIA, SAN DIEGO Analysis and Design of ReliableTHE DISSERTATION Analysis and Design of Reliable Nanometerthe difficulty in analysis and design of reliable digital

  4. Geographically Based Hydrogen Demand and Infrastructure Analysis...

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

    Analysis Geographically Based Hydrogen Demand and Infrastructure Analysis Presentation by NREL's Margo Melendez at the 2010 - 2025 Scenario Analysis for Hydrogen Fuel Cell Vehicles...

  5. Static timing analysis in VLSI design

    E-Print Network [OSTI]

    Zhou, Shuo

    2006-01-01

    II.B Static Timing AnalysisStatic Timing Analysis in the Design Flow FalseChip Analysis . . . . . . . . . . . . . . I.C Static Timing

  6. Hypothesis analysis methods, hypothesis analysis devices, and articles of manufacture

    DOE Patents [OSTI]

    Sanfilippo, Antonio P. (Richland, WA); Cowell, Andrew J. (Kennewick, WA); Gregory, Michelle L. (Richland, WA); Baddeley, Robert L. (Richland, WA); Paulson, Patrick R. (Pasco, WA); Tratz, Stephen C. (Richland, WA); Hohimer, Ryan E. (West Richland, WA)

    2012-03-20

    Hypothesis analysis methods, hypothesis analysis devices, and articles of manufacture are described according to some aspects. In one aspect, a hypothesis analysis method includes providing a hypothesis, providing an indicator which at least one of supports and refutes the hypothesis, using the indicator, associating evidence with the hypothesis, weighting the association of the evidence with the hypothesis, and using the weighting, providing information regarding the accuracy of the hypothesis.

  7. Real time analysis under EDS

    SciTech Connect (OSTI)

    Schneberk, D.

    1985-07-01

    This paper describes the analysis component of the Enrichment Diagnostic System (EDS) developed for the Atomic Vapor Laser Isotope Separation Program (AVLIS) at Lawrence Livermore National Laboratory (LLNL). Four different types of analysis are performed on data acquired through EDS: (1) absorption spectroscopy on laser-generated spectral lines, (2) mass spectrometer analysis, (3) general purpose waveform analysis, and (4) separation performance calculations. The information produced from this data includes: measures of particle density and velocity, partial pressures of residual gases, and overall measures of isotope enrichment. The analysis component supports a variety of real-time modeling tasks, a means for broadcasting data to other nodes, and a great degree of flexibility for tailoring computations to the exact needs of the process. A particular data base structure and program flow is common to all types of analysis. Key elements of the analysis component are: (1) a fast access data base which can configure all types of analysis, (2) a selected set of analysis routines, (3) a general purpose data manipulation and graphics package for the results of real time analysis. Each of these components are described with an emphasis upon how each contributes to overall system capability. 3 figs.

  8. SDI CFD MODELING ANALYSIS

    SciTech Connect (OSTI)

    Lee, S.

    2011-05-05

    The Savannah River Remediation (SRR) Organization requested that Savannah River National Laboratory (SRNL) develop a Computational Fluid Dynamics (CFD) method to mix and blend the miscible contents of the blend tanks to ensure the contents are properly blended before they are transferred from the blend tank; such as, Tank 50H, to the Salt Waste Processing Facility (SWPF) feed tank. The work described here consists of two modeling areas. They are the mixing modeling analysis during miscible liquid blending operation, and the flow pattern analysis during transfer operation of the blended liquid. The transient CFD governing equations consisting of three momentum equations, one mass balance, two turbulence transport equations for kinetic energy and dissipation rate, and one species transport were solved by an iterative technique until the species concentrations of tank fluid were in equilibrium. The steady-state flow solutions for the entire tank fluid were used for flow pattern analysis, for velocity scaling analysis, and the initial conditions for transient blending calculations. A series of the modeling calculations were performed to estimate the blending times for various jet flow conditions, and to investigate the impact of the cooling coils on the blending time of the tank contents. The modeling results were benchmarked against the pilot scale test results. All of the flow and mixing models were performed with the nozzles installed at the mid-elevation, and parallel to the tank wall. From the CFD modeling calculations, the main results are summarized as follows: (1) The benchmark analyses for the CFD flow velocity and blending models demonstrate their consistency with Engineering Development Laboratory (EDL) and literature test results in terms of local velocity measurements and experimental observations. Thus, an application of the established criterion to SRS full scale tank will provide a better, physically-based estimate of the required mixing time, and elevation of transfer pump for minimum sludge disturbance. (2) An empirical equation for a tank with no cooling coils agrees reasonably with the current modeling results for the dual jet. (3) From the sensitivity study of the cooling coils, it was found that the tank mixing time for the coiled tank was about two times longer than that of the tank fluid with no coils under the 1/10th scale, while the coiled tank required only 50% longer than the one without coils under the full scale Tank 50H. In addition, the time difference is reduced when the pumping U{sub o}d{sub o} value is increased for a given tank. (4) The blending time for T-shape dual jet pump is about 20% longer than that of 15{sup o} upward V-shape pump under the 1/10th pilot-scale tank, while the time difference between the two pumps is about 12% for the full-scale Tank 50H. These results are consistent with the literature information. (5) A transfer pump with a solid-plate suction screen operating at 130 gpm can be located 9.5 inches above settled sludge for 2 in screen height in a 85 ft waste tank without disturbing any sludge. Detailed results are summarized in Table 13. Final pump performance calculations were made by using the established CW pump design, and operating conditions to satisfy the two requirements of minimum sludge disturbance, and adequate blending of tank contents. The final calculation results show that the blending times for the coiled and uncoiled tanks coupled with the CW pump design are 159 and 83 minutes, respectively. All the results are provided in Table 16.

  9. Ultrasound Analysis Of Slurries

    DOE Patents [OSTI]

    Soong, Yee (Monroeville, PA); Blackwell, Arthur G. (Duquesne, PA)

    2005-11-01

    An autoclave reactor allows for the ultrasonic analysis of slurry concentration and particle size distribution at elevated temperatures and pressures while maintaining the temperature- and pressure-sensitive ultrasonic transducers under ambient conditions. The reactor vessel is a hollow stainless steel cylinder containing the slurry which includes a stirrer and a N.sub.2 gas source for directing gas bubbles through the slurry. Input and output transducers are connected to opposed lateral portions of the hollow cylinder for respectively directing sound waves through the slurry and receiving these sound waves after transmission through the slurry, where changes in sound wave velocity and amplitude can be used to measure slurry parameters. Ultrasonic adapters connect the transducers to the reactor vessel in a sealed manner and isolate the transducers from the hostile conditions within the vessel without ultrasonic signal distortion or losses.

  10. LULU analysis program

    SciTech Connect (OSTI)

    Crawford, H.J.; Lindstrom, P.J.

    1983-10-01

    This paper describes a housekeeping, sorting, and plotting package that operates on word lists generated by a series of user subroutines called ANALYSERS. The LULU program provides a new approach to real-time data analysis for experiments at the Heavy Ion Spectrometer System (HISS) at the Lawrence Berkeley Laboratory BEVALAC. ANALYSERS are grouped together for loading and calling in a subroutine called LUUNA. Gives a detailed description of the data flow through LULU. Points out that LULA enables the formation of 100 scatter plots and 100 histograms simultaneously. Presents a diagram which shows the arrays that are used. From the RAW data array (input array) through the analyser output array, VALS, and through the plot arrays, SCAT, to the final array that is displayed as a graph, XY.

  11. Ultrasound Analysis of Slurries

    DOE Patents [OSTI]

    Soong, Yee and Blackwell, Arthur G.

    2005-11-01

    An autoclave reactor allows for the ultrasonic analysis of slurry concentration and particle size distribution at elevated temperatures and pressures while maintaining the temperature- and pressure-sensitive ultrasonic transducers under ambient conditions. The reactor vessel is a hollow stainless steel cylinder containing the slurry which includes a stirrer and a N, gas source for directing gas bubbles through the slurry. Input and output transducers are connected to opposed lateral portions of the hollow cylinder for respectively directing sound waves through the slurry and receiving these sound waves after transmission through the slurry, where changes in sound wave velocity and amplitude can be used to measure slurry parameters. Ultrasonic adapters connect the transducers to the reactor vessel in a sealed manner and isolate the transducers from the hostile conditions within the vessel without ultrasonic signal distortion or losses.

  12. The Tariff Analysis Project: A Database and Analysis Platform...

    Open Energy Info (EERE)

    a cost-benefit analysis of energy efficiency, because it enables users to determine the cost of electricity. References Retrieved from "http:en.openei.orgw...

  13. Analysis Models and Tools: Systems Analysis of Hydrogen and Fuel...

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

    and individual summaries of the models and tools used for systems analysis of hydrogen and fuel cells. View the Overview Fact Sheet and Individual Summaries Overview Fact...

  14. Chemical process hazards analysis

    SciTech Connect (OSTI)

    1996-02-01

    The Office of Worker Health and Safety (EH-5) under the Assistant Secretary for the Environment, Safety and Health of the US Department (DOE) has published two handbooks for use by DOE contractors managing facilities and processes covered by the Occupational Safety and Health Administration (OSHA) Rule for Process Safety Management of Highly Hazardous Chemicals (29 CFR 1910.119), herein referred to as the PSM Rule. The PSM Rule contains an integrated set of chemical process safety management elements designed to prevent chemical releases that can lead to catastrophic fires, explosions, or toxic exposures. The purpose of the two handbooks, ``Process Safety Management for Highly Hazardous Chemicals`` and ``Chemical Process Hazards Analysis,`` is to facilitate implementation of the provisions of the PSM Rule within the DOE. The purpose of this handbook ``Chemical Process Hazards Analysis,`` is to facilitate, within the DOE, the performance of chemical process hazards analyses (PrHAs) as required under the PSM Rule. It provides basic information for the performance of PrHAs, and should not be considered a complete resource on PrHA methods. Likewise, to determine if a facility is covered by the PSM rule, the reader should refer to the handbook, ``Process Safety Management for Highly Hazardous Chemicals`` (DOE- HDBK-1101-96). Promulgation of the PSM Rule has heightened the awareness of chemical safety management issues within the DOE. This handbook is intended for use by DOE facilities and processes covered by the PSM rule to facilitate contractor implementation of the PrHA element of the PSM Rule. However, contractors whose facilities and processes not covered by the PSM Rule may also use this handbook as a basis for conducting process hazards analyses as part of their good management practices. This handbook explains the minimum requirements for PrHAs outlined in the PSM Rule. Nowhere have requirements been added beyond what is specifically required by the rule.

  15. Accident Tolerant Fuel Analysis

    SciTech Connect (OSTI)

    Curtis Smith; Heather Chichester; Jesse Johns; Melissa Teague; Michael Tonks; Robert Youngblood

    2014-09-01

    Safety is central to the design, licensing, operation, and economics of Nuclear Power Plants (NPPs). Consequently, the ability to better characterize and quantify safety margin holds the key to improved decision making about light water reactor design, operation, and plant life extension. A systematic approach to characterization of safety margins and the subsequent margins management options represents a vital input to the licensee and regulatory analysis and decision making that will be involved. The purpose of the Risk Informed Safety Margin Characterization (RISMC) Pathway research and development (R&D) is to support plant decisions for risk-informed margins management by improving economics and reliability, and sustaining safety, of current NPPs. Goals of the RISMC Pathway are twofold: (1) Develop and demonstrate a risk-assessment method coupled to safety margin quantification that can be used by NPP decision makers as part of their margin recovery strategies. (2) Create an advanced “RISMC toolkit” that enables more accurate representation of NPP safety margin. In order to carry out the R&D needed for the Pathway, the Idaho National Laboratory is performing a series of case studies that will explore methods- and tools-development issues, in addition to being of current interest in their own right. One such study is a comparative analysis of safety margins of plants using different fuel cladding types: specifically, a comparison between current-technology Zircaloy cladding and a notional “accident-tolerant” (e.g., SiC-based) cladding. The present report begins the process of applying capabilities that are still under development to the problem of assessing new fuel designs. The approach and lessons learned from this case study will be included in future Technical Basis Guides produced by the RISMC Pathway. These guides will be the mechanism for developing the specifications for RISMC tools and for defining how plant decision makers should propose and evaluate margin recovery strategies.

  16. Accident tolerant fuel analysis

    SciTech Connect (OSTI)

    Smith, Curtis; Chichester, Heather; Johns, Jesse; Teague, Melissa; Tonks, Michael Idaho National Laboratory; Youngblood, Robert

    2014-09-01

    Safety is central to the design, licensing, operation, and economics of Nuclear Power Plants (NPPs). Consequently, the ability to better characterize and quantify safety margin holds the key to improved decision making about light water reactor design, operation, and plant life extension. A systematic approach to characterization of safety margins and the subsequent margins management options represents a vital input to the licensee and regulatory analysis and decision making that will be involved. The purpose of the Risk Informed Safety Margin Characterization (RISMC) Pathway research and development (R&D) is to support plant decisions for risk-informed margins management by improving economics and reliability, and sustaining safety, of current NPPs. Goals of the RISMC Pathway are twofold: (1) Develop and demonstrate a risk-assessment method coupled to safety margin quantification that can be used by NPP decision makers as part of their margin recovery strategies. (2) Create an advanced ''RISMC toolkit'' that enables more accurate representation of NPP safety margin. In order to carry out the R&D needed for the Pathway, the Idaho National Laboratory is performing a series of case studies that will explore methods- and tools-development issues, in addition to being of current interest in their own right. One such study is a comparative analysis of safety margins of plants using different fuel cladding types: specifically, a comparison between current-technology Zircaloy cladding and a notional ''accident-tolerant'' (e.g., SiC-based) cladding. The present report begins the process of applying capabilities that are still under development to the problem of assessing new fuel designs. The approach and lessons learned from this case study will be included in future Technical Basis Guides produced by the RISMC Pathway. These guides will be the mechanism for developing the specifications for RISMC tools and for defining how plant decision makers should propose and evaluate margin recovery strategies.

  17. Updated Cost Analysis of Photobiological Hydrogen Production...

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

    Analysis of Photobiological Hydrogen Production from Chlamydomonas reinhardtii Green Algae: Milestone Completion Report Updated Cost Analysis of Photobiological Hydrogen...

  18. Analysis Activities at Idaho National Engineering & Environmental...

    Energy Savers [EERE]

    Analysis Activities at Idaho National Engineering & Environmental Laboratory Analysis Activities at Idaho National Engineering & Environmental Laboratory Presentation on INEENL's...

  19. Automated Transportation Logistics and Analysis System (ATLAS...

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

    Packaging and Transportation Automated Transportation Logistics and Analysis System (ATLAS) Automated Transportation Logistics and Analysis System (ATLAS) The Department of...

  20. Technoeconomic Analysis of Photoelectrochemical (PEC) Hydrogen...

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

    Analysis of Photoelectrochemical (PEC) Hydrogen Production Technoeconomic Analysis of Photoelectrochemical (PEC) Hydrogen Production This report documents the engineering and cost...