National Library of Energy BETA

Sample records for obtain potentially sensitive

  1. U-017: HP MFP Digital Sending Software Lets Local Users Obtain Potentially Sensitive Information

    Broader source: Energy.gov [DOE]

    A vulnerability was reported in HP MFP Digital Sending Software. A local user can obtain potentially sensitive information.

  2. U-006:Cisco Network Admission Control Manager Directory Traversal Flaw Lets Remote Users Obtain Potentially Sensitive Information

    Broader source: Energy.gov [DOE]

    An unauthenticated attacker could exploit this vulnerability to access sensitive information, including password files and system logs, that could be leveraged to launch subsequent attacks.

  3. T-651: Blue Coat ProxySG Discloses Potentially Sensitive Information in Core Files

    Broader source: Energy.gov [DOE]

    A vulnerability was reported in Blue Coat ProxySG. A local user can obtain potentially sensitive information

  4. Biomarkers of acute respiratory allergen exposure: Screening for sensitization potential

    SciTech Connect (OSTI)

    Pucheu-Haston, Cherie M.; Copeland, Lisa B.; Vallanat, Beena; Boykin, Elizabeth; Ward, Marsha D.W.

    2010-04-15

    Effective hazard screening will require the development of high-throughput or in vitro assays for the identification of potential sensitizers. The goal of this preliminary study was to identify potential biomarkers that differentiate the response to allergens vs non-allergens following an acute exposure in naive individuals. Female BALB/c mice received a single intratracheal aspiration exposure to Metarhizium anisopliae crude antigen (MACA) or bovine serum albumin (BSA) in Hank's Balanced Salt Solution (HBSS) or HBSS alone. Mice were terminated after 1, 3, 6, 12, 18 and 24 h. Bronchoalveolar lavage fluid (BALF) was evaluated to determine total and differential cellularity, total protein concentration and LDH activity. RNA was isolated from lung tissue for microarray analysis and qRT-PCR. MACA administration induced a rapid increase in BALF neutrophils, lymphocytes, eosinophils and total protein compared to BSA or HBSS. Microarray analysis demonstrated differential expression of genes involved in cytokine production, signaling, inflammatory cell recruitment, adhesion and activation in 3 and 12 h MACA-treated samples compared to BSA or HBSS. Further analyses allowed identification of approx 100 candidate biomarker genes. Eleven genes were selected for further assessment by qRT-PCR. Of these, 6 demonstrated persistently increased expression (Ccl17, Ccl22, Ccl7, Cxcl10, Cxcl2, Saa1), while C3ar1 increased from 6-24 h. In conclusion, a single respiratory exposure of mice to an allergenic mold extract induces an inflammatory response which is distinct in phenotype and gene transcription from the response to a control protein. Further validation of these biomarkers with additional allergens and irritants is needed. These biomarkers may facilitate improvements in screening methods.

  5. A dipole polarizable potential for reduced and doped CeO obtained from first principles

    E-Print Network [OSTI]

    Yildiz, Bilge

    applications in several technologically relevant areas such as catalysis [1] and solid oxide fuel cells (SOFCs potential (DIPPIM: the dipole polarizable ion model) and optimize its parameters by fitting them to a series

  6. A Simple Efficient Method for Obtaining the Binding Energy of Lithium Nucleus under the Hulthén and Inversely Quadratic Yukawa Potentials

    E-Print Network [OSTI]

    Nasrin. Salehi; Mahsa. Ghazvini

    2015-04-28

    In this paper, the binding energy of Lithium nucleus in a nonrelativistic model is obtained for the Hulth\\'en and the Inversely Quadratic Yukawa Potential. In order to that, we used the concept of supersymmetry to solving the Schr\\"odinger equation exact analytically. These potentials, due to their physical interpretations, are of interest within many areas of theoretical physics. The results of our model for all calculations show that the ground state binding energy of Lithium nucleus with these potentials are very close to the ones obtained in experiments.

  7. Sensitivity analysis of a directional potential drop sensor for creep monitoring

    E-Print Network [OSTI]

    Nagy, Peter B.

    an accelerated 400-hour creep test are presented to demonstrate the feasibility of this technique to monitorSensitivity analysis of a directional potential drop sensor for creep monitoring Elhoucine Madhi Accepted 1 August 2011 Available online 9 August 2011 Keywords: ACPD Creep monitoring Resistivity

  8. Test of the notch technique for determining the radial sensitivity of the optical model potential

    E-Print Network [OSTI]

    Lei Yang; Cheng-Jian Lin; Hui-ming Jia; Xin-Xing Xu; Nan-Ru Ma; Li-Jie Sun; Feng Yang; Huan-Qiao Zhang; Zu-Hua Li; Dong-Xi Wang

    2015-08-10

    Detailed investigations on the notch technique are performed on the ideal data generated by the optical model potential parameters extracted from the 16O+208Pb system at the laboratory energy of 129.5 MeV, to study the sensitivities of this technique on the model parameters as well as the experimental data. It is found that, for the perturbation parameters, a sufficient large reduced fraction and an appropriate small perturbation width are necessary to determine the accurate radial sensitivity; while for the potential parameters, almost no dependence was observed. For the experimental measurements, the number of data points has little influence for the heavy target system, and the relative inner information of the nuclear potential can be derived when the measurement extended to a lower cross section.

  9. Interatomic potentials for ionic systems with density functional accuracy based on charge densities obtained by a neural network

    E-Print Network [OSTI]

    Ghasemi, S Alireza; Saha, Santanu; Goedecker, Stefan

    2015-01-01

    Based on an analysis of the short range chemical environment of each atom in a system, standard machine learning based approaches to the construction of interatomic potentials aim at determining directly the central quantity which is the total energy. This prevents for instance an accurate description of the energetics of systems where long range charge transfer is important as well as of ionized systems. We propose therefore not to target directly with machine learning methods the total energy but an intermediate physical quantity namely the charge density, which then in turn allows to determine the total energy. By allowing the electronic charge to distribute itself in an optimal way over the system, we can describe not only neutral but also ionized systems with unprecedented accuracy. We demonstrate the power of our approach for both neutral and ionized NaCl clusters where charge redistribution plays a decisive role for the energetics. We are able to obtain chemical accuracy, i.e. errors of less than a mil...

  10. A Simple Efficient Method for Obtaining the Binding Energy of Lithium Nucleus under the Hulth\\'en and Inversely Quadratic Yukawa Potentials

    E-Print Network [OSTI]

    Salehi, Nasrin

    2015-01-01

    In this paper, the binding energy of Lithium nucleus in a nonrelativistic model is obtained for the Hulth\\'en and the Inversely Quadratic Yukawa Potential. In order to that, we used the concept of supersymmetry to solving the Schr\\"odinger equation exact analytically. These potentials, due to their physical interpretations, are of interest within many areas of theoretical physics. The results of our model for all calculations show that the ground state binding energy of Lithium nucleus with these potentials are very close to the ones obtained in experiments.

  11. Sensitivity of air quality to potential future climate change and emissions in the United1 States and major cities2

    E-Print Network [OSTI]

    Nenes, Athanasios

    1 Sensitivity of air quality to potential future climate change and emissions in the United1 States and future air quality is compared for the years 2006-2010 and17 2048-2052 over the contiguous United States affected by changes in climate, land use and pollutant38 emissions [Weaver et al., 2009]. Predictions

  12. Commercial potential for thermal & magnetic sensitive polymer in drug delivery applications

    E-Print Network [OSTI]

    Edward, Jonathan M. (Jonathan Mark)

    2008-01-01

    Thermal and magnetically sensitive polymers are a new class of materials with unique properties suitable for applications in drug delivery. Specifically, these polymers can be combined with a drug reservoir to make a drug ...

  13. Second Harmonic Generation in Neurons: Electro-Optic Mechanism of Membrane Potential Sensitivity

    E-Print Network [OSTI]

    Yuste, Rafael

    of Biological Sciences, and y Department of Chemistry, Columbia University, New York ABSTRACT Second harmonic an excellent SHG chromophore (8,9). We observed a linear dependency between SHG signals and membrane potential angle, the tilt angle of the dye molecule with respect to the plasma membrane can be analytically

  14. Dynamics of H{sub 2} Eley-Rideal abstraction from W(110): Sensitivity to the representation of the molecule-surface potential

    SciTech Connect (OSTI)

    Pétuya, R., E-mail: r.petuya@ism.u-bordeaux1.fr; Larrégaray, P.; Crespos, C. [Université de Bordeaux, ISM, CNRS UMR 5255, 33405 Talence Cedex (France); CNRS, ISM, UMR5255, F-33400 Talence (France); Busnengo, H. F.; Martínez, A. E. [Instituto de Física Rosario (IFIR) CONICET-UNR. Ocampo y Esmeralda (2000) Rosario (Argentina)

    2014-07-14

    Dynamics of the Eley-Rideal (ER) abstraction of H{sub 2} from W(110) is analyzed by means of quasi-classical trajectory calculations. Simulations are based on two different molecule-surface potential energy surfaces (PES) constructed from Density Functional Theory results. One PES is obtained by fitting, using a Flexible Periodic London-Eyring-Polanyi-Sato (FPLEPS) functional form, and the other by interpolation through the corrugation reducing procedure (CRP). Then, the present study allows us to elucidate the ER dynamics sensitivity on the PES representation. Despite some sizable discrepancies between both H+H/W(110) PESs, the obtained projectile-energy dependence of the total ER cross sections are qualitatively very similar ensuring that the main physical ingredients are captured in both PES models. The obtained distributions of the final energy among the different molecular degrees of freedom barely depend on the PES model, being most likely determined by the reaction exothermicity. Therefore, a reasonably good agreement with the measured final vibrational state distribution is observed in spite of the pressure and material gaps between theoretical and experimental conditions.

  15. Potential

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

    Potential and Frictional Drag on a Floating Sphere in a Flowing Plasma I. H. Hutchinson Plasma Science and Fusion Center Massachusetts Institute of Technology, Cambridge, MA, USA...

  16. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    the harvesting potential of our solar cell and suggests thedye sensitized solar cell and the potential they can serveSchottky solar cells has demonstrated the potential of these

  17. Truncated states obtained by iteration

    E-Print Network [OSTI]

    W. B. Cardoso; N. G. de Almeida

    2007-01-06

    Quantum states of the electromagnetic field are of considerable importance, finding potential application in various areas of physics, as diverse as solid state physics, quantum communication and cosmology. In this paper we introduce the concept of truncated states obtained via iterative processes (TSI) and study its statistical features, making an analogy with dynamical systems theory (DST). As a specific example, we have studied TSI for the doubling and the logistic functions, which are standard functions in studying chaos. TSI for both the doubling and logistic functions exhibit certain similar patterns when their statistical features are compared from the point of view of DST. A general method to engineer TSI in the running-wave domain is employed, which includes the errors due to the nonidealities of detectors and photocounts.

  18. Effect of acid deposition on potentially sensitive soil-plant systems at Vandenberg AFB, California. Final report, 1 September 1984-1 September 1987

    SciTech Connect (OSTI)

    Zedler, P.H.; Marion, G.

    1988-04-30

    The objectives of this study were to assess the impact of the acid deposition expected from rocket launches on natural coastal vegetation and soils. Interest was directed primarily toward the longer-term and more-subtle effects of acidity, and the degree of sensitivity of different soil-plant systems. A study area was established along a topographic chronosequence that ranged from stabilized dunes to residual soils over bedrock. Soils and plants were collected from this region and used in three main studies. A leaching study measured the changes in chemical properties of four soils subjected to repeated acid additions. A second study treated seeds of wide variety of native or spontaneous species with HC1 on the four soils to establish the sensitivity of the vegetation to deposition events during the fall to winter germination pulse characteristic of California coastal ecosystems. A third study examined the effect of acid treatments on the growth of and competition between two common woody plants -- Artemisia californica and Pinus muricata. A fourth study partially supported by this grant studied the invasion of an exotic species in a recently burned site on one of the four study soils. The studies collectively show that, although the soil-plant systems are well buffered against moderate and low inputs of acidity, the effect of acid additions differed among soil types and from species to species. Overall the hypothesis that acidic deposition could affect plant-plant and soil-plant interactions was supported, but some of these effects are subtle and not all appear to be deleterious.

  19. Adaptive Sensitivity 1 Adaptive Sensitivity

    E-Print Network [OSTI]

    Ginosar, Ran

    1 Adaptive Sensitivity 1 Adaptive Sensitivity Ran Ginosar Introduction Solid state (and other) sensors have a limited dynamic range Din: where both thresholds are measured in terms of the light intensity (Dout is specified as the ratio of the output signals). Light Intensity Output Signal Saturation

  20. Sensitive Species

    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 ofAlbuquerque|Sensitive Species Sensitive Species By avoiding or minimizing the

  1. Sensitivity analysis of conservation opportunities in the irrigated agriculture sector of the Pacific Northwest

    SciTech Connect (OSTI)

    Harrer, B.J.

    1985-07-01

    This report summarizes the results of a sensitivity analysis of the cost effectiveness and energy-savings potential of conservation measures in the irrigation sector of the Pacific Northwest. This study examines the sensitivity of estimates of the cost effectiveness and energy-savings potential of conservation measures in the irrigation sector generated in a previous study (Harrer et al. 1985c) to changes in various types of input data parameters: reductions in purchase, installation and operating/maintenance costs for irrigation-sector conservation measures. Increases in the amounts of irrigation pumping head savings that would result from the use of the measures were also implemented in the sensitivity analysis. The assumptions used in the sensitivity analysis cause the analysis to represent a ''best-case'' scenario for the amount of energy that can potentially be saved through the implementation of irrigation-sector conservation measures in the Pacific Northwest and the costs per kWh saved for obtaining these savings. Under these ''best-case'' assumptions, it is estimated that approximately 207 average megawatts of electricity can potentially be saved by the year 2003 through the implementation of low-pressure irrigation, pump fittings redesign, increases in mainline size, and improved irrigation scheduling on new and existing irrigated acres. The majority of these savings (70%) can be obtained for a cost of 20 mills per kWh saved or less.

  2. Dye Sensitized Tandem Photovoltaic Cells

    SciTech Connect (OSTI)

    Barber, Greg D.

    2009-12-21

    This work provided a new way to look at photoelectrochemical cells and their performance. Although thought of as low efficiency, a the internal efficiency of a 9% global efficiency dye sensitized solar cell is approximately equal to an 18% efficient silicon cell when each is compared to their useful spectral range. Other work undertaken with this contract also reported the first growth oriented titania and perovskite columns on a transparent conducting oxide. Other work has shown than significant performance enhancement in the performance of dye sensitized solar cells can be obtained through the use of coupling inverse opal photonic crystals to the nanocrystalline dye sensitized solar cell. Lastly, a quick efficient method was developed to bond titanium foils to transparent conducting oxide substrates for anodization.

  3. Obtaining accurate measurement using redundant sensors 

    E-Print Network [OSTI]

    Burnett, Michael Scott

    1996-01-01

    Conventional wisdom suggests to accomplish accurate measurement, the sensors used must have high precision and excellent dynamic range. This generally results in sensor systems that are complex, costly, and often sensitive to environmental factors...

  4. Focus Sensitive Coordination

    E-Print Network [OSTI]

    Hulsey, Sarah McNearney

    2008-01-01

    This thesis investigates the role of the Focus Sensitive Operators (FSOs) even and also when found inside of a coordination. Coordinations of this form are called Focus Sensitive Coordinations (FSC) and include or even, ...

  5. 70Ge(p,gamma)71As and 76Ge(p,n)76As cross sections for the astrophysical p process: sensitivity of the optical proton potential at low energies

    E-Print Network [OSTI]

    G. G. Kiss; Gy. Gyurky; Z. Elekes; Zs. Fulop; E. Somorjai; T. Rauscher; M. Wiescher

    2007-11-07

    The cross sections of the 70Ge(p,gamma)71As and 76Ge(p,n)76As reactions have been measured with the activation method in the Gamow window for the astrophysical p process. The experiments were carried out at the Van de Graaff and cyclotron accelerators of ATOMKI. The cross sections have been derived by measuring the decay gamma-radiation of the reaction products. The results are compared to the predictions of Hauser-Feshbach statistical model calculations using the code NON-SMOKER. Good agreement between theoretical and experimental S factors is found. Based on the new data, modifications of the optical potential used for low-energy protons are discussed.

  6. Treatment of biomass to obtain ethanol

    DOE Patents [OSTI]

    Dunson, Jr., James B. (Newark, DE); Elander, Richard T. (Evergreen, CO); Tucker, III, Melvin P. (Lakewood, CO); Hennessey, Susan Marie (Avondale, PA)

    2011-08-16

    Ethanol was produced using biocatalysts that are able to ferment sugars derived from treated biomass. Sugars were obtained by pretreating biomass under conditions of high solids and low ammonia concentration, followed by saccharification.

  7. Tuned cavity magnetometer sensitivity.

    SciTech Connect (OSTI)

    Okandan, Murat; Schwindt, Peter

    2009-09-01

    We have developed a high sensitivity (sensitivity levels.

  8. The LISA Optimal Sensitivity

    E-Print Network [OSTI]

    Thomas A. Prince; Massimo Tinto; Shane L. Larson; J. W. Armstrong

    2003-06-04

    The multiple Doppler readouts available on the Laser Interferometer Space Antenna (LISA) permit simultaneous formation of several interferometric observables. All these observables are independent of laser frequency fluctuations and have different couplings to gravitational waves and to the various LISA instrumental noises. Within the functional space of interferometric combinations LISA will be able to synthesize, we have identified a triplet of interferometric combinations that show optimally combined sensitivity. As an application of the method, we computed the sensitivity improvement for sinusoidal sources in the nominal, equal-arm LISA configuration. In the part of the Fourier band where the period of the wave is longer than the typical light travel-time across LISA, the sensitivity gain over a single Michelson interferometer is equal to $\\sqrt{2}$. In the mid-band region, where the LISA Michelson combination has its best sensitivity, the improvement over the Michelson sensitivity is slightly better than $\\sqrt{2}$, and the frequency band of best sensitivity is broadened. For frequencies greater than the reciprocal of the light travel-time, the sensitivity improvement is oscillatory and $\\sim \\sqrt{3}$, but can be greater than $\\sqrt{3}$ near frequencies that are integer multiples of the inverse of the one-way light travel-time in the LISA arm.

  9. Extended Forward Sensitivity Analysis for Uncertainty Quantification

    SciTech Connect (OSTI)

    Haihua Zhao; Vincent A. Mousseau

    2011-09-01

    Verification and validation (V&V) are playing more important roles to quantify uncertainties and realize high fidelity simulations in engineering system analyses, such as transients happened in a complex nuclear reactor system. Traditional V&V in the reactor system analysis focused more on the validation part or did not differentiate verification and validation. The traditional approach to uncertainty quantification is based on a 'black box' approach. The simulation tool is treated as an unknown signal generator, a distribution of inputs according to assumed probability density functions is sent in and the distribution of the outputs is measured and correlated back to the original input distribution. The 'black box' method mixes numerical errors with all other uncertainties. It is also not efficient to perform sensitivity analysis. Contrary to the 'black box' method, a more efficient sensitivity approach can take advantage of intimate knowledge of the simulation code. In these types of approaches equations for the propagation of uncertainty are constructed and the sensitivities are directly solved for as variables in the simulation. This paper presents the forward sensitivity analysis as a method to help uncertainty qualification. By including time step and potentially spatial step as special sensitivity parameters, the forward sensitivity method is extended as one method to quantify numerical errors. Note that by integrating local truncation errors over the whole system through the forward sensitivity analysis process, the generated time step and spatial step sensitivity information reflect global numerical errors. The discretization errors can be systematically compared against uncertainties due to other physical parameters. This extension makes the forward sensitivity method a much more powerful tool to help uncertainty qualification. By knowing the relative sensitivity of time and space steps with other interested physical parameters, the simulation is allowed to run at optimized time and space steps without affecting the confidence of the physical parameter sensitivity results. The time and space steps forward sensitivity analysis method can also replace the traditional time step and grid convergence study with much less computational cost. Several well defined benchmark problems with manufactured solutions are utilized to demonstrate the extended forward sensitivity analysis method. All the physical solutions, parameter sensitivity solutions, even the time step sensitivity in one case, have analytical forms, which allows the verification to be performed in the strictest sense.

  10. Multiple predictor smoothing methods for sensitivity analysis.

    SciTech Connect (OSTI)

    Helton, Jon Craig; Storlie, Curtis B.

    2006-08-01

    The use of multiple predictor smoothing methods in sampling-based sensitivity analyses of complex models is investigated. Specifically, sensitivity analysis procedures based on smoothing methods employing the stepwise application of the following nonparametric regression techniques are described: (1) locally weighted regression (LOESS), (2) additive models, (3) projection pursuit regression, and (4) recursive partitioning regression. The indicated procedures are illustrated with both simple test problems and results from a performance assessment for a radioactive waste disposal facility (i.e., the Waste Isolation Pilot Plant). As shown by the example illustrations, the use of smoothing procedures based on nonparametric regression techniques can yield more informative sensitivity analysis results than can be obtained with more traditional sensitivity analysis procedures based on linear regression, rank regression or quadratic regression when nonlinear relationships between model inputs and model predictions are present.

  11. X-ray survival characteristics and genetic analysis for nine saccharomyces deletion mutants that show altered radiation sensitivity

    SciTech Connect (OSTI)

    Game, John C.; Williamson, Marsha S.; Baccari, Clelia

    2004-01-07

    The availability of a genome-wide set of Saccharomyces deletion mutants provides a chance to identify all the yeast genes involved in DNA repair. Using X-rays, we are screening these mutants to identify additional genes that show increased sensitivity to the lethal effects of ionizing radiation. For each mutant identified as sensitive, we are confirming that the sensitivity phenotype co-segregates with the deletion allele and are obtaining multipoint survival-versus-dose assays in at least two haploid and one homozygous diploid strains. We present data for deletion mutants involving the genes DOT1, MDM20, NAT3, SPT7, SPT20, GCN5, HFI1, DCC1 and VID21/EAF1, and discuss their potential roles in repair. Eight of these genes have a clear radiation-sensitive phenotype when deleted, but the ninth, GCN5, has at most a borderline phenotype. None of the deletions confer substantial sensitivity to ultra-violet radiation, although one or two may confer marginal sensitivity. The DOT1 gene is of interest because its only known function is to methylate one lysine residue in the core of the histone H3 protein. We find that histone H3 mutants (supplied by K. Struhl) in which this residue is replaced by other amino-acids are also X-ray sensitive, seeming to confirm that methylation of the lysine-79 residue is required for effective repair of radiation damage.

  12. Obtaining Disaster Assistance for Public Infrastructure 

    E-Print Network [OSTI]

    Taylor, Greg

    2005-10-10

    stream_source_info pdf_2241.pdf.txt stream_content_type text/plain stream_size 7983 Content-Encoding ISO-8859-1 stream_name pdf_2241.pdf.txt Content-Type text/plain; charset=ISO-8859-1 ER-031 5-06 Obtaining Disaster... and Recov- ery Grant http://www.orca.state.tx.us/whatsNew/pdf Rural%20Health%20Disaster%20Relief% 2%20Recovery%20Grant.pdf Those eligible for this program include: ? rural hospitals in counties with popula- tions of 150,000 or fewer and that have...

  13. HOW TO OBTAIN EIA PRODUCTS AND SERVICES

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)DecadeYear Jan Feb Mar Apr MayYear Jan FebMississippi119,456 111,949HOW TO OBTAIN

  14. Commercialization potential of dye-sensitized mesoscopic solar cells

    E-Print Network [OSTI]

    Tan, Kwan Wee

    2008-01-01

    The price of oil has continued to rise, from a high of US$100 per barrel at the beginning 2008 to a new record of above US$140 in the recent weeks (of July). Coupled with increasing insidious greenhouse gas emissions, the ...

  15. Climate Sensitivity Estimated From Earth's Climate History James E. Hansen and Makiko Sato

    E-Print Network [OSTI]

    Hansen, James E.

    1 Climate Sensitivity Estimated From Earth's Climate History James E. Hansen and Makiko Sato NASA's climate history potentially can yield accurate assessment of climate sensitivity. Imprecise knowledge of the fast-feedback climate sensitivity, which is the sensitivity that most immediately affects humanity. Our

  16. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    by Dye-Sensitized Photovoltaic cells. Inorganic Chemistry,by Dye-Sensitized Photovoltaic Cells. Inorganic ChemistryTiO 2 solar cells: transport, recombination and photovoltaic

  17. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    dynamics in dye sensitized nanocrystalline solar cells using a polymer electrolytedynamics in dye sensitized nanocrystalline solar cells using a polymer electrolyte.

  18. Obtaining Reliable Feedback for Sanctioning Reputation Mechanisms

    E-Print Network [OSTI]

    Faltings, B; 10.1613/jair.2243

    2011-01-01

    Reputation mechanisms offer an effective alternative to verification authorities for building trust in electronic markets with moral hazard. Future clients guide their business decisions by considering the feedback from past transactions; if truthfully exposed, cheating behavior is sanctioned and thus becomes irrational. It therefore becomes important to ensure that rational clients have the right incentives to report honestly. As an alternative to side-payment schemes that explicitly reward truthful reports, we show that honesty can emerge as a rational behavior when clients have a repeated presence in the market. To this end we describe a mechanism that supports an equilibrium where truthful feedback is obtained. Then we characterize the set of pareto-optimal equilibria of the mechanism, and derive an upper bound on the percentage of false reports that can be recorded by the mechanism. An important role in the existence of this bound is played by the fact that rational clients can establish a reputation for...

  19. Sensitive hydrogen leak detector

    DOE Patents [OSTI]

    Myneni, Ganapati Rao (Yorktown, VA)

    1999-01-01

    A sensitive hydrogen leak detector system using passivation of a stainless steel vacuum chamber for low hydrogen outgassing, a high compression ratio vacuum system, a getter operating at 77.5 K and a residual gas analyzer as a quantitative hydrogen sensor.

  20. Sensitive hydrogen leak detector

    DOE Patents [OSTI]

    Myneni, G.R.

    1999-08-03

    A sensitive hydrogen leak detector system is described which uses passivation of a stainless steel vacuum chamber for low hydrogen outgassing, a high compression ratio vacuum system, a getter operating at 77.5 K and a residual gas analyzer as a quantitative hydrogen sensor. 1 fig.

  1. U-053: Linux kexec Bugs Let Local and Remote Users Obtain Potentially

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann Jackson About1996HowFOAShowing YouNeed forUnruhDepartment ofM I C HCommands on the

  2. Potential Energy Total electric potential energy, U, of a system of

    E-Print Network [OSTI]

    Bertulani, Carlos A. - Department of Physics and Astronomy, Texas A&M University

    Potential Energy Total electric potential energy, U, of a system of charges is obtained from of work done by the field, W*= -W. Bring q1 from , W *= 0 since no electric F yet #12;Potential Energy Total electric potential energy, U, of a system of charges is obtained from the work done by an external

  3. Surveillance Metrics Sensitivity Study

    SciTech Connect (OSTI)

    Bierbaum, R; Hamada, M; Robertson, A

    2011-11-01

    In September of 2009, a Tri-Lab team was formed to develop a set of metrics relating to the NNSA nuclear weapon surveillance program. The purpose of the metrics was to develop a more quantitative and/or qualitative metric(s) describing the results of realized or non-realized surveillance activities on our confidence in reporting reliability and assessing the stockpile. As a part of this effort, a statistical sub-team investigated various techniques and developed a complementary set of statistical metrics that could serve as a foundation for characterizing aspects of meeting the surveillance program objectives. The metrics are a combination of tolerance limit calculations and power calculations, intending to answer level-of-confidence type questions with respect to the ability to detect certain undesirable behaviors (catastrophic defects, margin insufficiency defects, and deviations from a model). Note that the metrics are not intended to gauge product performance but instead the adequacy of surveillance. This report gives a short description of four metrics types that were explored and the results of a sensitivity study conducted to investigate their behavior for various inputs. The results of the sensitivity study can be used to set the risk parameters that specify the level of stockpile problem that the surveillance program should be addressing.

  4. Surveillance metrics sensitivity study.

    SciTech Connect (OSTI)

    Hamada, Michael S.; Bierbaum, Rene Lynn; Robertson, Alix A.

    2011-09-01

    In September of 2009, a Tri-Lab team was formed to develop a set of metrics relating to the NNSA nuclear weapon surveillance program. The purpose of the metrics was to develop a more quantitative and/or qualitative metric(s) describing the results of realized or non-realized surveillance activities on our confidence in reporting reliability and assessing the stockpile. As a part of this effort, a statistical sub-team investigated various techniques and developed a complementary set of statistical metrics that could serve as a foundation for characterizing aspects of meeting the surveillance program objectives. The metrics are a combination of tolerance limit calculations and power calculations, intending to answer level-of-confidence type questions with respect to the ability to detect certain undesirable behaviors (catastrophic defects, margin insufficiency defects, and deviations from a model). Note that the metrics are not intended to gauge product performance but instead the adequacy of surveillance. This report gives a short description of four metrics types that were explored and the results of a sensitivity study conducted to investigate their behavior for various inputs. The results of the sensitivity study can be used to set the risk parameters that specify the level of stockpile problem that the surveillance program should be addressing.

  5. The Snell law for quaternionic potentials

    SciTech Connect (OSTI)

    De Leo, Stefano; Ducati, Gisele C.

    2013-12-15

    By using the analogy between optics and quantum mechanics, we obtain the Snell law for the planar motion of quantum particles in the presence of quaternionic potentials.

  6. Screenable Pressure-Sensitive Adhesives

    Broader source: Energy.gov [DOE]

    Pressure-sensitive adhesives (PSAs) in recycled paper create a number of problems for the recycling process, including lost production and diminished product quality. Unlike conventional PSAs, a...

  7. Sensitized near infrared emission from lanthanide-exchanged zeolites

    SciTech Connect (OSTI)

    Monguzzi, A.; Macchi, G.; Meinardi, F.; Tubino, R.; Burger, M.; Calzaferri, G.

    2008-03-24

    In this work, we present an alternative approach to sensitize the near infrared emission of Er{sup 3+} ions (used in telecom applications) by exploiting the geometrical confinement occurring in porous zeolites structures. The sensitization of the Ln ion is obtained by energy transfer between a suitable organic molecule acting as an antenna and the emitting ion arranged in closed proximity, thus, avoiding the limits imposed by the coordination chemistry.

  8. SCALE Sensitivity Calculations Using Contributon Theory

    SciTech Connect (OSTI)

    Rearden, Bradley T [ORNL] [ORNL; Perfetti, Chris [University of Michigan] [University of Michigan; Williams, Mark L [ORNL] [ORNL; Petrie Jr, Lester M [ORNL] [ORNL

    2010-01-01

    The SCALE TSUNAMI-3D sensitivity and uncertainty analysis sequence computes the sensitivity of k-eff to each constituent multigroup cross section using adjoint techniques with the KENO Monte Carlo codes. A new technique to simultaneously obtain the product of the forward and adjoint angular flux moments within a single Monte Carlo calculation has been developed and implemented in the SCALE TSUNAMI-3D analysis sequence. A new concept in Monte Carlo theory has been developed for this work, an eigenvalue contributon estimator, which is an extension of previously developed fixed-source contributon estimators. A contributon is a particle for which the forward solution is accumulated, and its importance to the response, which is equivalent to the adjoint solution, is simultaneously accumulated. Thus, the contributon is a particle coupled with its contribution to the response, in this case keff. As implemented in SCALE, the contributon provides the importance of a particle exiting at any energy or direction for each location, energy and direction at which the forward flux solution is sampled. Although currently implemented for eigenvalue calculations in multigroup mode in KENO, this technique is directly applicable to continuous-energy calculations for many other responses such as fixed-source sensitivity analysis and quantification of reactor kinetics parameters. This paper provides the physical bases of eigenvalue contributon theory, provides details of implementation into TSUNAMI-3D, and provides results of sample calculations.

  9. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    2. Graztel, M. Solar Energy Conversion by Dye-Sensitized17. M. Grätzel, Solar Energy Conversion by Dye-Sensitizedas a low-cost solar energy conversion technology. 1.3.2

  10. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    551, 2005. 2. Graztel, M. Solar Energy Conversion by Dye-Y. , Warta, W. , Dunlop, E.D. Solar Cell efficiency tables (efficiency in dye-sensitized solar cells based on Tio2

  11. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    Y. , Warta, W. , Dunlop, E.D. Solar Cell efficiency tables (in dye-sensitized solar cells based on Tio2 nanocrystal/R. J. ; Nozik, A. J. Schottky Solar Cells Based on Colloidal

  12. Sensitivity technologies for large scale simulation.

    SciTech Connect (OSTI)

    Collis, Samuel Scott; Bartlett, Roscoe Ainsworth; Smith, Thomas Michael; Heinkenschloss, Matthias; Wilcox, Lucas C.; Hill, Judith C.; Ghattas, Omar; Berggren, Martin Olof; Akcelik, Volkan; Ober, Curtis Curry; van Bloemen Waanders, Bart Gustaaf; Keiter, Eric Richard

    2005-01-01

    Sensitivity analysis is critically important to numerous analysis algorithms, including large scale optimization, uncertainty quantification,reduced order modeling, and error estimation. Our research focused on developing tools, algorithms and standard interfaces to facilitate the implementation of sensitivity type analysis into existing code and equally important, the work was focused on ways to increase the visibility of sensitivity analysis. We attempt to accomplish the first objective through the development of hybrid automatic differentiation tools, standard linear algebra interfaces for numerical algorithms, time domain decomposition algorithms and two level Newton methods. We attempt to accomplish the second goal by presenting the results of several case studies in which direct sensitivities and adjoint methods have been effectively applied, in addition to an investigation of h-p adaptivity using adjoint based a posteriori error estimation. A mathematical overview is provided of direct sensitivities and adjoint methods for both steady state and transient simulations. Two case studies are presented to demonstrate the utility of these methods. A direct sensitivity method is implemented to solve a source inversion problem for steady state internal flows subject to convection diffusion. Real time performance is achieved using novel decomposition into offline and online calculations. Adjoint methods are used to reconstruct initial conditions of a contamination event in an external flow. We demonstrate an adjoint based transient solution. In addition, we investigated time domain decomposition algorithms in an attempt to improve the efficiency of transient simulations. Because derivative calculations are at the root of sensitivity calculations, we have developed hybrid automatic differentiation methods and implemented this approach for shape optimization for gas dynamics using the Euler equations. The hybrid automatic differentiation method was applied to a first order approximation of the Euler equations and used as a preconditioner. In comparison to other methods, the AD preconditioner showed better convergence behavior. Our ultimate target is to perform shape optimization and hp adaptivity using adjoint formulations in the Premo compressible fluid flow simulator. A mathematical formulation for mixed-level simulation algorithms has been developed where different physics interact at potentially different spatial resolutions in a single domain. To minimize the implementation effort, explicit solution methods can be considered, however, implicit methods are preferred if computational efficiency is of high priority. We present the use of a partial elimination nonlinear solver technique to solve these mixed level problems and show how these formulation are closely coupled to intrusive optimization approaches and sensitivity analyses. Production codes are typically not designed for sensitivity analysis or large scale optimization. The implementation of our optimization libraries into multiple production simulation codes in which each code has their own linear algebra interface becomes an intractable problem. In an attempt to streamline this task, we have developed a standard interface between the numerical algorithm (such as optimization) and the underlying linear algebra. These interfaces (TSFCore and TSFCoreNonlin) have been adopted by the Trilinos framework and the goal is to promote the use of these interfaces especially with new developments. Finally, an adjoint based a posteriori error estimator has been developed for discontinuous Galerkin discretization of Poisson's equation. The goal is to investigate other ways to leverage the adjoint calculations and we show how the convergence of the forward problem can be improved by adapting the grid using adjoint-based error estimates. Error estimation is usually conducted with continuous adjoints but if discrete adjoints are available it may be possible to reuse the discrete version for error estimation. We investigate the advantages and disadvantages of continuous and discre

  13. Quantum Brachistochrone Curves as Geodesics: Obtaining Accurate Minimum-Time Protocols for the Control of Quantum Systems

    E-Print Network [OSTI]

    Wang, Xiaoting

    Most methods of optimal control cannot obtain accurate time-optimal protocols. The quantum brachistochrone equation is an exception, and has the potential to provide accurate time-optimal protocols for a wide range of ...

  14. Policy Flash 2013-24 Fee Determinations: Requirement to Obtain...

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

    Requirement to Obtain Acquisition Executive's Input. Questions concerning this policy flash should be directed to Michael Righi of the Contract and Financial Assistance...

  15. V-202: Cisco Video Surveillance Manager Bugs Let Remote Users Obtain

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyThe U.S.Lacledeutilities. The Economics ofConductMultipleAccountPotentially Sensitive

  16. Noise sensitivity of Boolean functions and percolation

    E-Print Network [OSTI]

    Steif, Jeffrey

    Noise sensitivity of Boolean functions and percolation Christophe Garban1 Jeffrey E. Steif2 1 ENS, Kalai, Linial theorem . . . . . . . . . . . . . . . . . . . . . 12 5 Noise sensitivity and noise stability . . . . . . . . . . . . . . . . . . . . 14 6 The Benjamini, Kalai and Schramm noise sensitivity

  17. Generalized Stillinger--David Potential

    E-Print Network [OSTI]

    Igor Zhyganiuk

    2012-02-20

    We present an improved version of the Stillinger--David polarization potential of the intermolecular interaction in water. A clear algorithm of construction of a function describing the oxygen-hydrogen interaction in water molecules is formulated. A new approach to the modeling of a function screening the charge-dipole interaction on small distances is developed. To describe the long-range asymptotics of the intermolecular potential, the bare Stillinger--David potential is supplemented by a term related to the interaction of dipole moments of oxygen ions. In addition, we introduce a term involving a deformation of the electron shells of oxygen ions to the polarization component. These corrections allow us to successfully reproduce all essential results of quantum mechanical calculations of the interaction energy for water molecules obtained by Clementi. Analyzing the behavior of the dipole moment of a water molecule as a function of the intermolecular distance, we obtain the estimate of irreducible two-particle effects in water.

  18. Using seismic inversions to obtain an internal mixing processes indicator for main-sequence solar-like stars

    E-Print Network [OSTI]

    Buldgen, G; Dupret, M A

    2015-01-01

    Determining accurate and precise stellar ages is a major problem in astrophysics. These determinations are either obtained through empirical relations or model-dependent approaches. Currently, seismic modelling is one of the best ways of providing accurate ages. However, current methods are affected by simplifying assumptions concerning mixing processes. In this context, providing new structural indicators which are less model-dependent and more sensitive to such processes is crucial. We build a new indicator for core conditions on the main sequence, which should be more sensitive to structural differences and applicable to older stars than the indicator t presented in a previous paper. We also wish to analyse the importance of the number and type of modes for the inversion, as well as the impact of various constraints and levels of accuracy in the forward modelling process that is used to obtain reference models for the inversion. First, we present a method to obtain new structural kernels and use them to bu...

  19. Engine Combustion Network (ECN): Global sensitivity analysis...

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

    Engine Combustion Network (ECN): Global sensitivity analysis of Spray A for different combustion vessels Title Engine Combustion Network (ECN): Global sensitivity analysis of Spray...

  20. Generator for gallium-68 and compositions obtained therefrom

    DOE Patents [OSTI]

    Neirinckx, Rudi D. (Medfield, MA); Davis, Michael A. (Westwood, MA)

    1981-01-01

    A generator for obtaining radioactive gallium-68 from germanium-68 bound in a resin containing unsubstituted phenolic hydroxyl groups. The germanium-68 is loaded into the resin from an aqueous solution of the germanium-68. A physiologically acceptable solution of gallium-68 having an activity of 0.1 to 50 millicuries per milliliter of gallium-68 solution is obtained. The solution is obtained from the bound germanium-68 which forms gallium-68 in situ by eluting the column with a hydrochloric acid solution to form an acidic solution of gallium-68. The acidic solution of gallium-68 can be neutralized.

  1. An important challenge in magnetic fusion research is to obtain...

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

    control of edge transport barriers on Alcator C-Mod A crucial challenge in magnetic fusion is to obtain high energy confinement in a stationary plasma that is compatible with...

  2. Treatment of biomass to obtain a target chemical

    DOE Patents [OSTI]

    Dunson, Jr., James B. (Newark, DE); Tucker, III, Melvin P. (Lakewood, CO); Elander, Richard T. (Evergreen, CO); Hennessey, Susan Marie (Avondale, PA)

    2010-08-24

    Target chemicals were produced using biocatalysts that are able to ferment sugars derived from treated biomass. Sugars were obtained by pretreating biomass under conditions of high solids and low ammonia concentration, followed by saccharification.

  3. Inverse sensitivity analysis of SISO and MIMO systems using Maletinsky's spline-type modulation function method 

    E-Print Network [OSTI]

    Smith, Cherri Imelda

    1987-01-01

    of dynamic control systems. It allows direct, parametric observation of parameter deviations. In this aspect, inverse sensitivity theory is a powerful device in preventing the gradual deterioration of system performance. Normally large changes in system... systems. Another set of first-order inverse sensitivity functions were developed for the nonlinear-in-parameter systems. A method was offered for obtaining higher-order inverse sensitivity functions for nonlinear-in-parameter systems. The derived...

  4. Scale/TSUNAMI Sensitivity Data for ICSBEP Evaluations

    SciTech Connect (OSTI)

    Rearden, Bradley T [ORNL] [ORNL; Reed, Davis Allan [ORNL] [ORNL; Lefebvre, Robert A [ORNL] [ORNL; Mueller, Don [ORNL] [ORNL; Marshall, William BJ J [ORNL] [ORNL

    2011-01-01

    The Tools for Sensitivity and Uncertainty Analysis Methodology Implementation (TSUNAMI) software developed at Oak Ridge National Laboratory (ORNL) as part of the Scale code system provide unique methods for code validation, gap analysis, and experiment design. For TSUNAMI analysis, sensitivity data are generated for each application and each existing or proposed experiment used in the assessment. The validation of diverse sets of applications requires potentially thousands of data files to be maintained and organized by the user, and a growing number of these files are available through the International Handbook of Evaluated Criticality Safety Benchmark Experiments (IHECSBE) distributed through the International Criticality Safety Benchmark Evaluation Program (ICSBEP). To facilitate the use of the IHECSBE benchmarks in rigorous TSUNAMI validation and gap analysis techniques, ORNL generated SCALE/TSUNAMI sensitivity data files (SDFs) for several hundred benchmarks for distribution with the IHECSBE. For the 2010 edition of IHECSBE, the sensitivity data were generated using 238-group cross-section data based on ENDF/B-VII.0 for 494 benchmark experiments. Additionally, ORNL has developed a quality assurance procedure to guide the generation of Scale inputs and sensitivity data, as well as a graphical user interface to facilitate the use of sensitivity data in identifying experiments and applying them in validation studies.

  5. Soil organic matter stability and the temperature sensitivity of soil respiration 

    E-Print Network [OSTI]

    Burns, Nancy Rosalind

    2012-11-29

    Soil respiration is an important source of atmospheric CO2, with the potential for large positive feedbacks with global warming. The size of these feedbacks will depend on the relative sensitivity to temperature of very ...

  6. A model of the directional sensitivity of low-pressure CF? dark matter detectors

    E-Print Network [OSTI]

    Deaconu, Cosmin ?tefan

    2015-01-01

    Identification of the composition of dark matter is one of the major unsolved puzzles in modern physics. Detectors with sensitivity to the direction of certain classes of dark matter particles have potentially very powerful ...

  7. In-air and underwater hearing sensitivity of a northern elephant seal (Mirounga angustirostris)

    E-Print Network [OSTI]

    Reichmuth, Colleen

    In-air and underwater hearing sensitivity of a northern elephant seal (Mirounga angustirostris) D. Kastak and R.J. Schusterman Abstract: In-air and underwater sound detection thresholds were obtained for a female northern elephant seal (Mirounga angustirostris). Hearing sensitivity in air was generally poor

  8. Impact-ionization field-effect-transistor based biosensors for ultra-sensitive detection of biomolecules

    E-Print Network [OSTI]

    Impact-ionization field-effect-transistor based biosensors for ultra-sensitive detection online 21 May 2013) The phenomenon of impact-ionization is proposed to be leveraged for a novel biosensor field-effect-transistor (IFET) based biosensor, it is possible to obtain an increase in sensitivity

  9. Post-Assembly Atomic Layer Deposition of Ultrathin Metal-Oxide Coatings Enhances the Performance of an Organic Dye-Sensitized

    E-Print Network [OSTI]

    costs, dye-sensitized (molecule- sensitized) solar cells (DSCs) are among the most promising third-generation photovoltaic technologies.1-5 Impressive photovoltaic performance has been obtained using a variety of organic

  10. Development and application of LEESA (Low Energy Electrostatic Sensitivity Apparatus)

    SciTech Connect (OSTI)

    Carlson, R.S. ); Wood, R.L. )

    1990-01-01

    A precision Low Energy Electrostatic Sensitivity Apparatus (LEESA) was developed in the voltage range 0--3000 volts dc and was employed over a capacitance range of 25--50,000 pF on sensitive, very sensitive, and extremely sensitive pyrotechnic fuels and compositions. Zirconium powder, Zr/KClO{sub 4} pyrotechnic, titanium powder, Ti/KClO{sub 4} and TiH{sub x}/KClO{sub 4} pyrotechnics (x = 0.65, 1.65) and several other sensitive materials were evaluated. LEESA simulates casual human contact with potentially hazardous materials. In operation, a hand-held probe is applied to the sample to discharge the capacitance. As the probe approaches the sample, a spark jumps from the probe tip to the sample when the gap closes to the appropriate distance. This is analagous to a finger or a tool touching a sensitive material during which maneuver a spark jumps to the material. LEESA defines the probability of ignition over a voltage or energy range and is capable of thousands of trials on a test material in the span of a few hours. In addition to evaluating static sensitivity, the effect of electrode polarity, individual differences between operators, test method, humidity, sample size, particle size, capacitance, time constant RC, and voltage versus energy have been determined. The equipment is inexpensive and easy to build and use and is a low risk method because of the small quantities of sensitive material being tested at any one time. The accuracy and precision of the results surpasses that of methods currently in use. 7 refs., 11 figs., 1 tab.

  11. Dirac Equations with Confining Potentials

    E-Print Network [OSTI]

    J. H. Noble; U. D. Jentschura

    2015-02-06

    This paper is devoted to a study of relativistic eigenstates of Dirac particles which are simultaneously bound by a static Coulomb potential and added linear confining potentials. It has recently been shown that, despite the addition of radially symmetric, linear confining potentials, some specific bound-state energies surprisingly retain their exact Dirac--Coulomb values (in the sense of an "exact symmetry"). This observation raises pertinent questions as to the generality of the cancellation mechanism. A Foldy-Wouthuysen transformation is used to find the relevant nonrelativistic physical degrees of freedom, which include additional spin-orbit couplings induced by the linear confining potentials. The matrix elements of the effective operators obtained from the scalar, and time-like confining potentials mutually cancel for specific ratios of the prefactors of the effective operators, which must be tailored to the cancellation mechanism. The result of the Foldy-Wouthuysen transformation is used to explicitly show that the cancellation is accidental and restricted (for a given Hamiltonian) to only one reference state, rather than traceable to a more general relationship among the obtained effective low-energy operators. Furthermore, we show that the cancellation mechanism does not affect anti-particle (negative-energy) states.

  12. Dye-sensitized solar cells

    DOE Patents [OSTI]

    Skotheim, T.A.

    1980-03-04

    A low-cost dye-sensitized Schottky barrier solar cell is comprised of a substrate of semiconductor with an ohmic contact on one face, a sensitizing dye adsorbed onto the opposite face of the semiconductor, a transparent thin-film layer of a reducing agent over the dye, and a thin-film layer of metal over the reducing agent. The ohmic contact and metal layer constitute electrodes for connection to an external circuit and one or the other or both are made transparent to permit light to penetrate to the dye and be absorbed therein for generating electric current. The semiconductor material chosen to be the substrate is one having a wide bandgap and which therefore is transparent; the dye selected is one having a ground state within the bandgap of the semiconductor to generate carriers in the semiconductor, and a first excited state above the conduction band edge of the semiconductor to readily conduct electrons from the dye to the semiconductor; the reducing agent selected is one having a ground state above the ground state of the sensitizer to provide a plentiful source of electrons to the dye during current generation and thereby enhance the generation; and the metal for the thin-film layer of metal is selected to have a Fermi level in the vicinity of or above the ground state of the reducing agent to thereby amply supply electrons to the reducing agent. 3 figs.

  13. Dye-sensitized solar cells

    DOE Patents [OSTI]

    Skotheim, Terje A. [Berkeley, CA

    1980-03-04

    A low-cost dye-sensitized Schottky barrier solar cell comprised of a substrate of semiconductor with an ohmic contact on one face, a sensitizing dye adsorbed onto the opposite face of the semiconductor, a transparent thin-film layer of a reducing agent over the dye, and a thin-film layer of metal over the reducing agent. The ohmic contact and metal layer constitute electrodes for connection to an external circuit and one or the other or both are made transparent to permit light to penetrate to the dye and be absorbed therein for generating electric current. The semiconductor material chosen to be the substrate is one having a wide bandgap and which therefore is transparent; the dye selected is one having a ground state within the bandgap of the semiconductor to generate carriers in the semiconductor, and a first excited state above the conduction band edge of the semiconductor to readily conduct electrons from the dye to the semiconductor; the reducing agent selected is one having a ground state above the ground state of the sensitizer to provide a plentiful source of electrons to the dye during current generation and thereby enhance the generation; and the metal for the thin-film layer of metal is selected to have a Fermi level in the vicinity of or above the ground state of the reducing agent to thereby amply supply electrons to the reducing agent.

  14. Analyzing the Sensitivity of Hydrogen Vehicle Sales to Consumers' Preferences

    SciTech Connect (OSTI)

    Greene, David L; Lin, Zhenhong; Dong, Jing

    2013-01-01

    The success of hydrogen vehicles will depend on consumer behavior as well as technology, energy prices and public policy. This study examines the sensitivity of the future market shares of hydrogen-powered vehicles to alternative assumptions about consumers preferences. The Market Acceptance of Advanced Automotive Technologies model was used to project future market shares. The model has 1,458 market segments, differentiated by travel behavior, geography, and tolerance to risk, among other factors, and it estimates market shares for twenty advanced power-train technologies. The market potential of hydrogen vehicles is most sensitive to the improvement of drive train technology, especially cost reduction. The long-run market success of hydrogen vehicles is less sensitive to the price elasticity of vehicle choice, how consumers evaluate future fuel costs, the importance of fuel availability and limited driving range. The importance of these factors will likely be greater in the early years following initial commercialization of hydrogen vehicles.

  15. ANDI~E TRETIAKOFF RESULTS OBTAINED WITH A NEW METHOD

    E-Print Network [OSTI]

    as it is based on a preliminary knowledge of the language. We will show later how the results of the analysis can are suppressed. We will call now "words" these symbols. 2. DICTIONARY OF STRINGS The second step . . . . . . . . . . . . . . . . . . . 85 04 Each string is obtained by suppressing the first word ·ing string. of the preced- #12;AUTOMATIC

  16. Brain Mapping Using Topology Graphs Obtained by Surface Segmentation

    E-Print Network [OSTI]

    Linsen, Lars

    Brain Mapping Using Topology Graphs Obtained by Surface Segmentation Fabien Vivodtzev1 , Lars@ucdavis.edu Summary. Brain mapping is a technique used to alleviate the tedious and time- consuming process of annotating brains by mapping existing annotations from brain atlases to individual brains. We introduce

  17. Ph.D. Thesis defended to obtain the

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    traditional communication systems by more human oriented solutions based on virtual reality technology Facial animation has become an active research topic in telecommunications. This field aims at replacing from monocular video sequences. The obtained motion data are suitable to animate the realistic head

  18. Microstructured Porous Silica Obtained via Colloidal Crystal Templates

    E-Print Network [OSTI]

    Velev, Orlin D.

    Microstructured Porous Silica Obtained via Colloidal Crystal Templates O. D. Velev,* T. A. Jede, R modified colloidal crystals as templates for silica polymerization is reported. 3D close-packed crystals, representing a negative replica of the original colloidal crystal. The size of the pores can be controlled

  19. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    AND FUTURE WORK APPENDIX Appendix A Appendix B Appendix C REFERENCES v Glossary Si – Silicon NREL – National Renewable Energyrenewable energy technology that converts sunlight to electricity, with broad potential to contribute significantly to solving the future

  20. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    potential as a low-cost solar energy conversion technology.Grätzel. A Low-Cost, High-Efficiency Solar Cell Based on Dye1) reducing the cost of solar cells by depositing

  1. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    glass contact Solar Energy Materials and Solar Cells 93(10):cells. Solar Energy Materials and Solar Cells 92(8) 39.potential of these materials for solar energy conversion,

  2. Portal dosimetry for VMAT using integrated images obtained during treatment

    SciTech Connect (OSTI)

    Bedford, James L. Hanson, Ian M.; Hansen, Vibeke Nordmark

    2014-02-15

    Purpose: Portal dosimetry provides an accurate and convenient means of verifying dose delivered to the patient. A simple method for carrying out portal dosimetry for volumetric modulated arc therapy (VMAT) is described, together with phantom measurements demonstrating the validity of the approach. Methods: Portal images were predicted by projecting dose in the isocentric plane through to the portal image plane, with exponential attenuation and convolution with a double-Gaussian scatter function. Appropriate parameters for the projection were selected by fitting the calculation model to portal images measured on an iViewGT portal imager (Elekta AB, Stockholm, Sweden) for a variety of phantom thicknesses and field sizes. This model was then used to predict the portal image resulting from each control point of a VMAT arc. Finally, all these control point images were summed to predict the overall integrated portal image for the whole arc. The calculated and measured integrated portal images were compared for three lung and three esophagus plans delivered to a thorax phantom, and three prostate plans delivered to a homogeneous phantom, using a gamma index for 3% and 3 mm. A 0.6 cm{sup 3} ionization chamber was used to verify the planned isocentric dose. The sensitivity of this method to errors in monitor units, field shaping, gantry angle, and phantom position was also evaluated by means of computer simulations. Results: The calculation model for portal dose prediction was able to accurately compute the portal images due to simple square fields delivered to solid water phantoms. The integrated images of VMAT treatments delivered to phantoms were also correctly predicted by the method. The proportion of the images with a gamma index of less than unity was 93.7% ± 3.0% (1SD) and the difference between isocenter dose calculated by the planning system and measured by the ionization chamber was 0.8% ± 1.0%. The method was highly sensitive to errors in monitor units and field shape, but less sensitive to errors in gantry angle or phantom position. Conclusions: This method of predicting integrated portal images provides a convenient means of verifying dose delivered using VMAT, with minimal image acquisition and data processing requirements.

  3. Sensitivity of Multi-gas Climate Policy to Emission Metrics

    SciTech Connect (OSTI)

    Smith, Steven J.; Karas, Joseph F.; Edmonds, James A.; Eom, Jiyong; Mizrahi, Andrew H.

    2013-04-01

    Multi-gas greenhouse emission targets require that different emissions be combined into an aggregate total. The Global Warming Potential (GWP) index is currently used for this purpose, despite various criticisms of the underlying concept. It is not possible to uniquely define a single metric that perfectly captures the different impacts of emissions of substances with widely disparate atmospheric lifetimes, which leads to a wide range of possible index values. We examine the sensitivity of emissions and climate outcomes to the value of the index used to aggregate methane emissions using a technologically detailed integrated assessment model. We find that the sensitivity to index value is of order 4-14% in terms of methane emissions and 2% in terms of total radiative forcing, using index values between 4 and 70 for methane, with larger regional differences in some cases. The sensitivity to index value is much higher in economic terms, with total 2-gas mitigation cost decreasing 4-5% for a lower index and increasing 10-13% for a larger index, with even larger changes if the emissions reduction targets are small. The sensitivity to index value also depends on the assumed maximum amount of mitigation available in each sector. Evaluation of the maximum mitigation potential for major sources of non-CO2 greenhouse gases would greatly aid analysis

  4. Determining Importance Weighting Functions for Contributon Theory Eigenvalue Sensitivity Coefficient Methodologies

    SciTech Connect (OSTI)

    Perfetti, Christopher M [ORNL] [ORNL; Martin, William R [University of Michigan] [University of Michigan; Rearden, Bradley T [ORNL] [ORNL; Williams, Mark L [ORNL] [ORNL

    2012-01-01

    This study introduced three approaches for calculating the importance weighting function for Contributon and CLUTCH eigenvalue sensitivity coefficient calculations, and compared them in terms of accuracy and applicability. The necessary levels of mesh refinement and mesh convergence for obtaining accurate eigenvalue sensitivity coefficients were determined through two parametric studies, and the results of these studies suggest that a sufficiently-accurate mesh for calculating eigenvalue sensitivity coefficients can be obtained for the Contributon and CLUTCH methods with only a small increase in problem runtime.

  5. A novel concept for increasing the peak sensitivity of LIGO by detuning the arm cavities

    E-Print Network [OSTI]

    S. Hild; A. Freise

    2007-09-10

    We introduce a concept that uses detuned arm cavities to increase the shot noise limited sensitivity of LIGO without increasing the light power inside the arm cavities. Numerical simulations show an increased sensitivity between 125 and 400 Hz, with a maximal improvement of about 80% around 225 Hz, while the sensitivity above 400Hz is decreased. Furthermore our concept is found to give a sensitivity similar to that of a conventional RSE configuration with a Signal-Recycling mirror of moderate reflectivity. In the near future detuned arm cavities might be a beneficial alternative to RSE, due the potentially less hardware intensive implementation of the proposed concept.

  6. Monitoring of saline tracer movement with vertically distributed self-potential measurements at the HOBE agricultural test site, Voulund, Denmark

    E-Print Network [OSTI]

    Jougnot, Damien; Haarder, Eline B; Looms, Majken C

    2015-01-01

    The self-potential (SP) method is sensitive to water fluxes in saturated and partially saturated porous media, such as those associated with rainwater infiltration and groundwater recharge. We present a field-based study at the Voulund agricultural test site, Denmark, that is, to the best of our knowledge, the first to focus on the vertical self-potential distribution prior to and during a saline tracer test. A coupled hydrogeophysical modeling framework is used to simulate the SP response to precipitation and saline tracer infiltration. A layered hydrological model is first obtained by inverting dielectric and matric potential data. The resulting model that compares favorably with electrical resistance tomography models is subsequently used to predict the SP response. The electrokinetic contribution (caused by water fluxes in a charged porous soil) is modeled by an effective excess charge approach that considers both water saturation and pore water salinity. Our results suggest that the effective excess char...

  7. Depletion GPT-free sensitivity analysis for reactor eigenvalue problems

    SciTech Connect (OSTI)

    Kennedy, C.; Abdel-Khalik, H. [North Carolina State University, Raleigh, NC (United States)

    2013-07-01

    This manuscript introduces a novel approach to solving depletion perturbation theory problems without the need to set up or solve the generalized perturbation theory (GPT) equations. The approach, hereinafter denoted generalized perturbation theory free (GPT-Free), constructs a reduced order model (ROM) using methods based in perturbation theory and computes response sensitivity profiles in a manner that is independent of the number or type of responses, allowing for an efficient computation of sensitivities when many responses are required. Moreover, the reduction error from using the ROM is quantified in the GPT-Free approach by means of a Wilks' order statistics error metric denoted the K-metric. Traditional GPT has been recognized as the most computationally efficient approach for performing sensitivity analyses of models with many input parameters, e.g. when forward sensitivity analyses are computationally intractable. However, most neutronics codes that can solve the fundamental (homogenous) adjoint eigenvalue problem do not have GPT capabilities unless envisioned during code development. The GPT-Free approach addresses this limitation by requiring only the ability to compute the fundamental adjoint. This manuscript demonstrates the GPT-Free approach for depletion reactor calculations performed in SCALE6 using the 7x7 UAM assembly model. A ROM is developed for the assembly over a time horizon of 990 days. The approach both calculates the reduction error over the lifetime of the simulation using the K-metric and benchmarks the obtained sensitivities using sample calculations. (authors)

  8. Quantum mechanics without potential function

    E-Print Network [OSTI]

    A. D. Alhaidari; M. E. H. Ismail

    2015-06-26

    In the standard formulation of quantum mechanics, one starts by proposing a potential function that models the physical system. The potential is then inserted into the Schr\\"odinger equation, which is solved for the wave function, bound states energy spectrum and/or scattering phase shift. In this work, however, we propose an alternative formulation in which the potential function does not appear. The aim is to obtain a set of analytically realizable systems, which is larger than in the standard formulation and may or may not be associated with any given or previously known potential functions. We start with the wavefunction, which is written as a bounded infinite sum of elements of a complete basis with polynomial coefficients that are orthogonal on an appropriate domain in the energy space. Using the asymptotic properties of these polynomials, we obtain the scattering phase shift, bound states and resonances. This formulation enables one to handle not only the well-known quantum systems but also previously untreated ones. Illustrative examples are given for two- and there-parameter systems.

  9. Gravitational-wave sensitivity curves

    E-Print Network [OSTI]

    Moore, C. J.; Cole, R. H.; Berry, C. P. L.

    2014-12-08

    timing residual of 100 ns. 4.4.3. SKA. The next great advancement in radio astronomy shall come with the completion of the Square Kilometre Array (SKA; Dewdney et al 2009). This shall greatly increase the sensitivity of pulsar timing (Kramer et al 2004... by producing plots that consistently compare different detectors. Similar figures can be generated on-line for general use at http://rhcole.com/apps/GWplotter. Keywords: gravitational waves, black holes, pulsar timing, pulsar timing arrays PACS numbers: 04...

  10. Hydrodesulfurization and hydrodenitrogenation catalysts obtained from coal mineral matter

    DOE Patents [OSTI]

    Liu, Kindtoken H. D. (Newark, DE); Hamrin, Jr., Charles E. (Lexington, KY)

    1982-01-01

    A hydrotreating catalyst is prepared from coal mineral matter obtained by low temperature ashing coals of relatively low bassanite content by the steps of: (a) depositing on the low temperature ash 0.25-3 grams of an iron or nickel salt in water per gram of ash and drying a resulting slurry; (b) crushing and sizing a resulting solid; and (c) heating the thus-sized solid powder in hydrogen.

  11. Path Integral Solution of PT-/non-PT-Symmetric and non-Hermitian Morse Potential

    E-Print Network [OSTI]

    Nalan Kandirmaz; Ramazan Sever

    2008-12-14

    Path integral solutions are obtained for the the PT-/non-PT-Symmetric and non-Hermitian Morse Potential. Energy eigenvalues and the corresponding wave functions are obtained.

  12. Arctic Sea ice model sensitivities.

    SciTech Connect (OSTI)

    Peterson, Kara J.; Bochev, Pavel Blagoveston; Paskaleva, Biliana Stefanova

    2010-12-01

    Arctic sea ice is an important component of the global climate system and, due to feedback effects, the Arctic ice cover is changing rapidly. Predictive mathematical models are of paramount importance for accurate estimates of the future ice trajectory. However, the sea ice components of Global Climate Models (GCMs) vary significantly in their prediction of the future state of Arctic sea ice and have generally underestimated the rate of decline in minimum sea ice extent seen over the past thirty years. One of the contributing factors to this variability is the sensitivity of the sea ice state to internal model parameters. A new sea ice model that holds some promise for improving sea ice predictions incorporates an anisotropic elastic-decohesive rheology and dynamics solved using the material-point method (MPM), which combines Lagrangian particles for advection with a background grid for gradient computations. We evaluate the variability of this MPM sea ice code and compare it with the Los Alamos National Laboratory CICE code for a single year simulation of the Arctic basin using consistent ocean and atmospheric forcing. Sensitivities of ice volume, ice area, ice extent, root mean square (RMS) ice speed, central Arctic ice thickness,and central Arctic ice speed with respect to ten different dynamic and thermodynamic parameters are evaluated both individually and in combination using the Design Analysis Kit for Optimization and Terascale Applications (DAKOTA). We find similar responses for the two codes and some interesting seasonal variability in the strength of the parameters on the solution.

  13. 4, 13771404, 2007 Sensitivity study of

    E-Print Network [OSTI]

    Boyer, Edmond

    BGD 4, 1377­1404, 2007 Sensitivity study of air-sea CO2 flux J. F. Tjiputra and A. M. E. Winguth Adjoint sensitivity of the air-sea CO2 flux to ecosystem parameterization in a three-dimensional global­1404, 2007 Sensitivity study of air-sea CO2 flux J. F. Tjiputra and A. M. E. Winguth Title Page Abstract

  14. How to obtain the National Energy Modeling System (NEMS)

    Reports and Publications (EIA)

    2013-01-01

    The National Energy Modeling System (NEMS) NEMS is used by the modelers at the U. S. Energy Information Administration (EIA) who understand its structure and programming. NEMS has only been used by a few organizations outside of the EIA, because most people that requested NEMS found out that it was too difficult or rigid to use. NEMS is not typically used for state-level analysis and is poorly suited for application to other countries. However, many do obtain the model simply to use the data in its input files or to examine the source code.

  15. Criticality of environmental information obtainable by dynamically controlled quantum probes

    E-Print Network [OSTI]

    Analia Zwick; Gonzalo A. Alvarez; Gershon Kurizki

    2015-09-22

    A universal approach to decoherence control combined with quantum estimation theory reveals a critical behavior, akin to a phase transition, of the information obtainable by a qubit probe concerning the memory time of environmental fluctuations. This criticality emerges only when the probe is subject to dynamical control. It gives rise to a sharp transition between two dynamical phases characterized by either a short or long memory time compared to the probing time. This phase-transition of the environmental information is a fundamental feature that facilitates the attainment of the highest estimation precision of the environment memory-time and the characterization of probe dynamics.

  16. Hybrid nuclear reactor grey rod to obtain required reactivity worth

    DOE Patents [OSTI]

    Miller, John V. (Munhall, PA); Carlson, William R. (Scott Township, Allegheny County, PA); Yarbrough, Michael B. (Hempfield Township, Westmoreland County, PA)

    1991-01-01

    Hybrid nuclear reactor grey rods are described, wherein geometric combinations of relatively weak neutron absorber materials such as stainless steel, zirconium or INCONEL, and relatively strong neutron absorber materials, such as hafnium, silver-indium cadmium and boron carbide, are used to obtain the reactivity worths required to reach zero boron change load follow. One embodiment includes a grey rod which has combinations of weak and strong neutron absorber pellets in a stainless steel cladding. The respective pellets can be of differing heights. A second embodiment includes a grey rod with a relatively thick stainless steel cladding receiving relatively strong neutron absorber pellets only. A third embodiment includes annular relatively weak netron absorber pellets with a smaller diameter pellet of relatively strong absorber material contained within the aperture of each relatively weak absorber pellet. The fourth embodiment includes pellets made of a homogeneous alloy of hafnium and a relatively weak absorber material, with the percentage of hafnium chosen to obtain the desired reactivity worth.

  17. Metal-free organic sensitizers for use in water-splitting dye-sensitized photoelectrochemical cells

    E-Print Network [OSTI]

    Metal-free organic sensitizers for use in water-splitting dye-sensitized photoelectrochemical cells solar cell. We report the synthesis, spectral, and electrochem- ical properties of the sensitizers groups have studied them as light-harvesting molecules in dye-sensitized solar cells (DSSCs) (6, 7

  18. Coherent-Light Boosted, Super-Sensitive, Quantum Interferometry

    E-Print Network [OSTI]

    William N. Plick; Jonathan P. Dowling; G. S. Agarwal

    2015-06-14

    We present in this letter a scheme for optical interferometry. We utilize coherent-beam-stimulated two-mode squeezed light, which interacts with a phase shifter and is then squeezed again before detection. Our theoretical device has the potential to reach far below the shot noise limit (SNL) in phase sensitivity. This new proposal avoids the pitfalls of other setups, such as difficulty in creating the required resource. Furthermore, our scheme requires no complicated detection protocol, relying instead only on simple intensity measurement. Also, bright, coherent sources "boost" squeezed light, creating a very sensitive device. This hybrid scheme relies on no unknown components and can be constructed with current technology. In the following we present our analysis of this relatively straightforward device, using the operator propagation method. We derive the phase sensitivity and provide a simple numerical example of the power of our new proposal. Sensitivity scales as a shot noise limited Mach-Zehnder Interferometer, multiplied by a sub-Heisenberg contribution from the squeezed light.

  19. Fission life-time calculation using a complex absorbing potential

    E-Print Network [OSTI]

    Guillaume Scamps; Kouichi Hagino

    2015-12-28

    A comparison between the semi-classical approximation and the full quantum calculation with a complex absorbing potential is made with a model of the fission of 258Fm. The potential barrier is obtained with the constrained Skyrme HF+BCS theory. The life-time obtained by the two calculations agree with each other the difference being only by 25%.

  20. Renewable Energy Economic Potential

    Broader source: Energy.gov [DOE]

    The report describes a geospatial analysis method to estimate the economic potential of several renewable resources available for electricity generation in the United States. Economic potential, one measure of renewable generation potential, is defined in this report as the subset of the available resource technical potential where the cost required to generate the electricity (which determines the minimum revenue requirements for development of the resource) is below the revenue available in terms of displaced energy and displaced capacity.

  1. Liquid Water: Obtaining the right answer for the right reasons

    SciTech Connect (OSTI)

    Apra, Edoardo [ORNL; Harrison, Robert J [ORNL; de Jong, Wibe A [Pacific Northwest National Laboratory (PNNL); Rendell, Alistair P [Australian National University, Canberra, Australia; Tipparaju, Vinod [ORNL; Xantheas, Sotiris [Pacific Northwest National Laboratory (PNNL)

    2009-01-01

    Water is ubiquitous on our planet and plays an essential role in many chemical and biological processes. Accurate models for water are crucial in understanding, controlling and predicting the physical and chemical properties of complex aqueous systems. Over the last few years we have been developing a molecular-level based approach for a macroscopic model for water that is based on the explicit description of the underlying intermolecular interactions between molecules in water clusters. In the absence of detailed experimental data for small water clusters, highly-accurate theoretical results are required to validate and parameterize model potentials. As an example of the benchmarks needed for the development of accurate models for the interaction between water molecules, for the most stable structure of (H$_2$O)$_{20}$ we ran a coupled-cluster calculation on the ORNL's Jaguar petaflop computer that used over 100 TB of memory for a sustained performance of 487 TFLOP/s (double precision) on 96,000 processors, lasting for 2 hours. By this summer we will have studied multiple structures of both (H$_2$O)$_{20}$ and (H$_2$O)$_{30}$ and completed basis set and other convergence studies and anticipate the sustained performance rising close to 1 PFLOP/s.

  2. Finite quantum dissipation: the challenge of obtaining specific heat

    E-Print Network [OSTI]

    Peter Hänggi; Gert-Ludwig Ingold; Peter Talkner

    2008-05-26

    We consider a free particle coupled with finite strength to a bath and investigate the evaluation of its specific heat. A harmonic oscillator bath of Drude type with cutoff frequency omega_D is employed to model an ohmic friction force with dissipation strength gamma. Two scenarios for obtaining specific heat are presented. The first one uses the measurement of the kinetic energy of the free particle while the second one is based on the reduced partition function. Both descriptions yield results which are consistent with the Third Law of thermodynamics. Nevertheless, the two methods produce different results that disagree even in their leading quantum corrections at high temperatures. We also consider the regime where the cutoff frequency is smaller than the friction strength, i.e. omega_Dspecific heat based on the thermodynamic prescription becomes negative. This anomaly is rooted in an ill-defined density of states of the damped free particle which assumes unphysical negative values when gamma/omega_D>1.

  3. Sensitivity in risk analyses with uncertain numbers.

    SciTech Connect (OSTI)

    Tucker, W. Troy; Ferson, Scott

    2006-06-01

    Sensitivity analysis is a study of how changes in the inputs to a model influence the results of the model. Many techniques have recently been proposed for use when the model is probabilistic. This report considers the related problem of sensitivity analysis when the model includes uncertain numbers that can involve both aleatory and epistemic uncertainty and the method of calculation is Dempster-Shafer evidence theory or probability bounds analysis. Some traditional methods for sensitivity analysis generalize directly for use with uncertain numbers, but, in some respects, sensitivity analysis for these analyses differs from traditional deterministic or probabilistic sensitivity analyses. A case study of a dike reliability assessment illustrates several methods of sensitivity analysis, including traditional probabilistic assessment, local derivatives, and a ''pinching'' strategy that hypothetically reduces the epistemic uncertainty or aleatory uncertainty, or both, in an input variable to estimate the reduction of uncertainty in the outputs. The prospects for applying the methods to black box models are also considered.

  4. Nanoparticles for Enhanced Sensitivity in Electrochemical Immunoassays

    SciTech Connect (OSTI)

    Lin, Yuehe; Wang, Jun; Wang, Hua; Wu, Hong; Tang, Zhiwen

    2008-10-12

    In this manuscript, we report on electrochemical biosensors based on various nanoparticles (NPs) as labels for sensitive detection of protein biomarkers. We used silica nanoparticle as a carrier to loading a large amount of electroactive species such as poly(guanine) for sensitive immunoassay of tumor necrosis factor-alpha (TNF-a). We took the advantages of the unique hollow structure and reconstruction properties of apoferritin to prepare Cd3(PO4)2 nanoparticles as labels for sensitive assay of TNF-a. A novel immunochromatographic/electro-chemical biosensor based on quantum dots as labels has also been developed for rapid and sensitive detection of prostate-specific antigen (PSA) in human serum. These biosensors are quite sensitive with the detection limit at pM level and these approaches based on nanoparticle labels offer a new avenue for sensitive detection of protein biomarkers.

  5. Benchmark On Sensitivity Calculation (Phase III)

    SciTech Connect (OSTI)

    Ivanova, Tatiana [IRSN; Laville, Cedric [IRSN; Dyrda, James [Atomic Weapons Establishment; Mennerdahl, Dennis [E. Mennerdahl Systems; Golovko, Yury [Institute of Physics and Power Engineering (IPPE), Obninsk, Russia; Raskach, Kirill [Institute of Physics and Power Engineering (IPPE), Obninsk, Russia; Tsiboulia, Anatoly [Institute of Physics and Power Engineering (IPPE), Obninsk, Russia; Lee, Gil Soo [Korea Institute of Nuclear Safety (KINS); Woo, Sweng-Woong [Korea Institute of Nuclear Safety (KINS); Bidaud, Adrien [Labratoire de Physique Subatomique et de Cosmolo-gie (LPSC); Patel, Amrit [NRC; Bledsoe, Keith C [ORNL; Rearden, Bradley T [ORNL; Gulliford, J. [OECD Nuclear Energy Agency

    2012-01-01

    The sensitivities of the keff eigenvalue to neutron cross sections have become commonly used in similarity studies and as part of the validation algorithm for criticality safety assessments. To test calculations of the sensitivity coefficients, a benchmark study (Phase III) has been established by the OECD-NEA/WPNCS/EG UACSA (Expert Group on Uncertainty Analysis for Criticality Safety Assessment). This paper presents some sensitivity results generated by the benchmark participants using various computational tools based upon different computational methods: SCALE/TSUNAMI-3D and -1D, MONK, APOLLO2-MORET 5, DRAGON-SUSD3D and MMKKENO. The study demonstrates the performance of the tools. It also illustrates how model simplifications impact the sensitivity results and demonstrates the importance of 'implicit' (self-shielding) sensitivities. This work has been a useful step towards verification of the existing and developed sensitivity analysis methods.

  6. LLNL Small-Scale Friction sensitivity (BAM) Test

    SciTech Connect (OSTI)

    Simpson, L.R.; Foltz, M.F.

    1996-06-01

    Small-scale safety testing of explosives, propellants and other energetic materials, is done to determine their sensitivity to various stimuli including friction, static spark, and impact. Testing is done to discover potential handling problems for either newly synthesized materials of unknown behavior, or materials that have been stored for long periods of time. This report describes the existing {open_quotes}BAM{close_quotes} Small-Scale Friction Test, and the methods used to determine the friction sensitivity pertinent to handling energetic materials. The accumulated data for the materials tested is not listed here - that information is in a database. Included is, however, a short list of (1) materials that had an unusual response, and (2), a few {open_quotes}standard{close_quotes} materials representing the range of typical responses usually seen.

  7. Sensitivity evaluation of dynamic speckle activity measurements using clustering methods

    SciTech Connect (OSTI)

    Etchepareborda, Pablo; Federico, Alejandro; Kaufmann, Guillermo H.

    2010-07-01

    We evaluate and compare the use of competitive neural networks, self-organizing maps, the expectation-maximization algorithm, K-means, and fuzzy C-means techniques as partitional clustering methods, when the sensitivity of the activity measurement of dynamic speckle images needs to be improved. The temporal history of the acquired intensity generated by each pixel is analyzed in a wavelet decomposition framework, and it is shown that the mean energy of its corresponding wavelet coefficients provides a suited feature space for clustering purposes. The sensitivity obtained by using the evaluated clustering techniques is also compared with the well-known methods of Konishi-Fujii, weighted generalized differences, and wavelet entropy. The performance of the partitional clustering approach is evaluated using simulated dynamic speckle patterns and also experimental data.

  8. Noise correction of turbulent spectra obtained from Acoustic Doppler Velocimeters

    SciTech Connect (OSTI)

    Durgesh, Vibhav; Thomson, Jim; Richmond, Marshall C.; Polagye, Brian

    2014-03-02

    Accurately estimated auto-spectral density functions are essential for characterization of turbulent flows, and they also have applications in computational fluid dynamics modeling, site and inflow characterization for hydrokinetic turbines, and inflow turbulence generation. The Acoustic Doppler Velocimeter (ADV) provides single-point temporally resolved data, that are used to characterize turbulent flows in rivers, seas, and oceans. However, ADV data are susceptible to contamination from various sources, including instrument noise, which is the intrinsic limit to the accuracy of acoustic velocity measurements. Due to the presence of instrument noise, the spectra obtained are altered at high frequencies. The focus of this study is to develop a robust and effective method for accurately estimating auto-spectral density functions from ADV data by reducing or removing the spectral contribution derived from instrument noise. For this purpose, the “Noise Auto-Correlation” (NAC) approach was developed, which exploits the correlation properties of instrument noise to identify and remove its contribution from spectra. The spectra estimated using the NAC approach exhibit increased fidelity and a slope of -5/3 in the inertial range, which is typically observed for turbulent flows. Finally, this study also compares the effectiveness of low-pass Gaussian filters in removing instrument noise with that of the NAC approach. For the data used in this study, both the NAC and Gaussian filter approaches are observed to be capable of removing instrument noise at higher frequencies from the spectra. However, the NAC results are closer to the expected frequency power of -5/3 in the inertial sub-range.

  9. Advancing Internal Combustion Engine Simulations using Sensitivity...

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

    Advancing Internal Combustion Engine Simulations using Sensitivity Analysis PI Name: Sibendu Som PI Email: ssom@anl.gov Institution: Argonne National Laboratory Allocation Program:...

  10. Dye-sensitized solar cells based on a nanoparticle/nanotube bilayer structure and their equivalent circuit analysis

    E-Print Network [OSTI]

    Lin, Zhiqun

    of anatase and rutile phases. As one of the major renewable energy sources, solar energy has the potential to become an essential component of future global energy production. Dye sensitized solar cells (DSSCs)1Dye-sensitized solar cells based on a nanoparticle/nanotube bilayer structure and their equivalent

  11. On modeling hydraulic fracture in proper variables: stiffness, accuracy, sensitivity

    E-Print Network [OSTI]

    Mishuris, Gennady; Linkov, Alexander

    2012-01-01

    The problem of hydraulic fracture propagation is considered by using its recently suggested modified formulation in terms of the particle velocity, the opening in the proper degree, appropriate spatial coordinates and $\\varepsilon$-regularization. We show that the formulation may serve for significant increasing the efficiency of numerical tracing the fracture propagation. Its advantages are illustrated by re-visiting the Nordgren problem. It is shown that the modified formulation facilitates (i) possibility to have various stiffness of differential equations resulting after spatial discretization, (ii) obtaining highly accurate and stable numerical results with moderate computational effort, and (iii) sensitivity analysis. The exposition is extensively illustrated by numerical examples.

  12. The $?-?$ fishbone potential revisited

    E-Print Network [OSTI]

    J. P. Day; J. E. McEwen; M. Elhanafy; E. Smith; R. Woodhouse; Z. Papp

    2011-05-30

    The fishbone potential of composite particles simulates the Pauli effect by nonlocal terms. We determine the $\\alpha-\\alpha$ fishbone potential by simultaneously fitting to two-$\\alpha$ resonance energies, experimental phase shifts and three-$\\alpha$ binding energies. We found that essentially a simple gaussian can provide a good description of two-$\\alpha$ and three-$\\alpha$ experimental data without invoking three-body potentials.

  13. Infinite potential well with a sinusoidal bottom

    E-Print Network [OSTI]

    A. D. Alhaidari; H. Bahlouli

    2008-08-07

    We construct a tridiagonal matrix representation of the wave operator that maps the wave equation into a three-term recursion relation for the expansion coefficients of the wavefunction. Finding a solution of the recursion relation is equivalent to solving the original problem. Consequently, a larger class of solvable potentials is obtained. The usual diagonal representation constraint results in a reduction to the conventional class of solvable potentials. To exhibit the power of this approach, we give an exact solution for the infinite potential well with sinusoidal bottom.

  14. (Melanin-Sensitized Solar Cell) : 696220016

    E-Print Network [OSTI]

    platinum thin film for counter-electrode, uses solar simulator to measure efficiency at AM 1.5 (100 mW/cm2 (Melanin-Sensitized Solar Cell) : : : 696220016 #12; #12;#12; #12;I PLD the majority dye-sensitized solar cell research all uses the Ruthenium-complex as a light harvester

  15. Spectral sensitization of nanocrystalline solar cells

    DOE Patents [OSTI]

    Spitler, Mark T. (Concord, MA); Ehret, Anne (Malden, MA); Stuhl, Louis S. (Bedford, MA)

    2002-01-01

    This invention relates to dye sensitized polycrystalline photoelectrochemical solar cells for use in energy transduction from light to electricity. It concerns the utility of highly absorbing organic chromophores as sensitizers in such cells and the degree to which they may be utilized alone and in combination to produce an efficient photoelectrochemical cell, e.g., a regenerative solar cell.

  16. Field matric potential sensor

    DOE Patents [OSTI]

    Hubbell, Joel M. (Idaho Falls, ID); Sisson, James B. (Idaho Falls, ID)

    2001-01-01

    A method of determining matric potential of a sample, the method comprising placing the sample in a container, the container having an opening; and contacting the sample with a tensiometer via the opening. An apparatus for determining matric potential of a sample, the apparatus comprising a housing configured to receive a sample; a portable matric potential sensing device extending into the housing and having a porous member; and a wall closing the housing to insulate the sample and at least a portion of the matric potential sensing device including the porous member.

  17. Correlation of the ionisation response at selected points of IC sensitive regions with SEE sensitivity parameters under pulsed laser irradiation

    SciTech Connect (OSTI)

    Gordienko, A V; Mavritskii, O B; Egorov, A N; Pechenkin, A A; Savchenkov, D V [National Research Nuclear University ''MEPhI'' (Russian Federation)

    2014-12-31

    The statistics of the ionisation response amplitude measured at selected points and their surroundings within sensitive regions of integrated circuits (ICs) under focused femtosecond laser irradiation is obtained for samples chosen from large batches of two types of ICs. A correlation between these data and the results of full-chip scanning is found for each type. The criteria for express validation of IC single-event effect (SEE) hardness based on ionisation response measurements at selected points are discussed. (laser applications and other topics in quantum electronics)

  18. High harmonic generation from periodic potentials driven by few-cycle laser pulses

    E-Print Network [OSTI]

    Guan, Zhong; Bian, Xue-Bin

    2015-01-01

    We investigate the high harmonic generation (HHG) from solids by simulating the dynamics of a single active electron in periodic potentials. The corresponding time-dependent Schr\\"odinger equations (TDSE) are solved numerically by using B-spline basis sets in coordinate space. The energy band structure and wave vectors can be directly retrived from the eigenfunctions. The harmonic spectra obtained agree well with the results simulated by TDSE in $k$ space using Bloch states and show a two-plateau structure. Both of the cutoff energies of the two plateaus in the harmonic spectrum scale linearly with the field strength. We also study HHG driven by intense few-cycle laser pulses and find that the cutoff energy of the harmonic spectrum is as sensitive to the changes of the carrier envelope phase, as to HHG from gas samples, which suggests recollision pictures in HHG as found by recent experiments (Nature {\\bf 522}, 462 (2015)).

  19. Physics Potential of the ICAL detector at the India-based Neutrino Observatory (INO)

    E-Print Network [OSTI]

    Ahmed, Shakeel; Hasan, Rashid; Salim, Mohammad; Singh, S K; Inbanathan, S S R; Singh, Venktesh; Subrahmanyam, V S; Behera, Shiba Prasad; Chandratre, Vinay B; Dash, Nitali; Datar, Vivek M; Kashyap, V K S; Mohanty, Ajit K; Pant, Lalit M; Chatterjee, Animesh; Choubey, Sandhya; Gandhi, Raj; Ghosh, Anushree; Tiwari, Deepak; Ajmi, Ali; Sankar, S Uma; Behera, Prafulla; Chacko, Aleena; Jafer, Sadiq; Libby, James; Raveendrababu, K; Rebin, K R; Indumathi, D; Meghna, K; Lakshmi, S M; Murthy, M V N; Pal, Sumanta; Rajasekaran, G; Sinha, Nita; Agarwalla, Sanjib Kumar; Khatun, Amina; Mehta, Poonam; Bhatnagar, Vipin; Kanishka, R; Kumar, A; Shahi, J S; Singh, J B; Ghosh, Monojit; Ghoshal, Pomita; Goswami, Srubabati; Gupta, Chandan; Raut, Sushant; Bhattacharya, Sudeb; Bose, Suvendu; Ghosal, Ambar; Jash, Abhik; Kar, Kamalesh; Majumdar, Debasish; Majumdar, Nayana; Mukhopadhyay, Supratik; Saha, Satyajit; Acharya, B S; Banerjee, Sudeshna; Bhattacharya, Kolahal; Dasgupta, Sudeshna; Devi, Moon Moon; Dighe, Amol; Majumder, Gobinda; Mondal, Naba K; Redij, Asmita; Samuel, Deepak; Satyanarayana, B; Thakore, Tarak; Ravikumar, C D; Vinodkumar, A M; Gangopadhyay, Gautam; Raychaudhuri, Amitava; Choudhary, Brajesh C; Gaur, Ankit; Kaur, Daljeet; Kumar, Ashok; Kumar, Sanjeev; Naimuddin, Md; Bari, Waseem; Malik, Manzoor A; Singh, Jyotsna; Krishnaveni, S; Ravikumar, H B; Ranganathaiah, C; Mahapatra, Swapna; Biswas, Saikat; Chattopadhyay, Subhasis; Ganai, Rajesh; Ghosh, Tapasi; Viyogi, Y P

    2015-01-01

    The upcoming 50 kt magnetized iron calorimeter (ICAL) detector at the India-based Neutrino Observatory (INO) is designed to study the atmospheric neutrinos and antineutrinos separately over a wide range of energies and path lengths. The primary focus of this experiment is to explore the Earth matter effects by observing the energy and zenith angle dependence of the atmospheric neutrinos in the multi-GeV range. This study will be crucial to address some of the outstanding issues in neutrino oscillation physics, including the fundamental issue of neutrino mass hierarchy. In this document, we present the physics potential of the detector as obtained from realistic detector simulations. We describe the simulation framework, the neutrino interactions in the detector, and the expected response of the detector to particles traversing it. The ICAL detector can determine the energy and direction of the muons to a high precision, and in addition, its sensitivity to multi-GeV hadrons increases its physics reach substant...

  20. Scattering amplitudes for multi-indexed extensions of solvable potentials

    SciTech Connect (OSTI)

    Ho, C.-L. [Department of Physics, Tamkang University, Tamsui 251, Taiwan, ROC (China); Lee, J.-C., E-mail: jcclee@cc.nctu.edu.tw [Department of Electrophysics, National Chiao-Tung University, Hsinchu, Taiwan, ROC (China); Sasaki, R. [Center for Theoretical Sciences, National Taiwan University, Taipei, Taiwan, ROC (China); Department of Physics, Shinshu University, Matsumoto 390-8621 (Japan)

    2014-04-15

    New solvable one-dimensional quantum mechanical scattering problems are presented. They are obtained from known solvable potentials by multiple Darboux transformations in terms of virtual and pseudo virtual wavefunctions. The same method applied to confining potentials, e.g.  Pöschl–Teller and the radial oscillator potentials, has generated the multi-indexed Jacobi and Laguerre polynomials. Simple multi-indexed formulas are derived for the transmission and reflection amplitudes of several solvable potentials. -- Highlights: •Scattering amplitudes calculated for infinitely many new solvable potentials. •New scattering potentials obtained by deforming six known solvable potentials. •Multiple Darboux transformations in terms of (pseudo) virtual states employed. •Scattering amplitudes checked to obey the shape invariance relation. •Errors in scattering amplitudes of some undeformed potentials in the literature corrected.

  1. Surface Binding and Organization of Sensitizing Dyes on Metal Oxide Single Crystal Surfaces

    SciTech Connect (OSTI)

    Parkinson, Bruce

    2010-06-04

    Even though investigations of dye-sensitized nanocrystalline semiconductors in solar cells has dominated research on dye-sensitized semiconductors over the past two decades. Single crystal electrodes represent far simpler model systems for studying the sensitization process with a continuing train of studies dating back more than forty years. Even today single crystal surfaces prove to be more controlled experimental models for the study of dye-sensitized semiconductors than the nanocrystalline substrates. We analyzed the scientific advances in the model sensitized single crystal systems that preceded the introduction of nanocrystalline semiconductor electrodes. It then follows the single crystal research to the present, illustrating both their striking simplicity of use and clarity of interpretation relative to nanocrystalline electrodes. Researchers have employed many electrochemical, photochemical and scanning probe techniques for studying monolayer quantities of sensitizing dyes at specific crystallographic faces of different semiconductors. These methods include photochronocoulometry, electronic spectroscopy and flash photolysis of dyes at potential-controlled semiconductor electrodes and the use of total internal reflection methods. In addition, we describe the preparation of surfaces of single crystal SnS2 and TiO2 electrodes to serve as reproducible model systems for charge separation at dye sensitized solar cells. This process involves cleaving the SnS2 electrodes and a photoelectrochemical surface treatment for TiO2 that produces clean surfaces for sensitization (as verified by AFM) resulting in near unity yields for electron transfer from the molecular excited dyes into the conduction band.

  2. Investigation of Thermal Interface Materials Using Phase-Sensitive Transient Thermoreflectance Technique: Preprint

    SciTech Connect (OSTI)

    Feng, X.; King, C.; DeVoto, D.; Mihalic, M.; Narumanchi, S.

    2014-08-01

    With increasing power density in electronics packages/modules, thermal resistances at multiple interfaces are a bottleneck to efficient heat removal from the package. In this work, the performance of thermal interface materials such as grease, thermoplastic adhesives and diffusion-bonded interfaces are characterized using the phase-sensitive transient thermoreflectance technique. A multi-layer heat conduction model was constructed and theoretical solutions were derived to obtain the relation between phase lag and the thermal/physical properties. This technique enables simultaneous extraction of the contact resistance and bulk thermal conductivity of the TIMs. With the measurements, the bulk thermal conductivity of Dow TC-5022 thermal grease (70 to 75 um bondline thickness) was 3 to 5 W/(m-K) and the contact resistance was 5 to 10 mm2-K/W. For the Btech thermoplastic material (45 to 80 ?m bondline thickness), the bulk thermal conductivity was 20 to 50 W/(m-K) and the contact resistance was 2 to 5 mm2-K/W. Measurements were also conducted to quantify the thermal performance of diffusion-bonded interface for power electronics applications. Results with the diffusion-bonded sample showed that the interfacial thermal resistance is more than one order of magnitude lower than those of traditional TIMs, suggesting potential pathways to efficient thermal management.

  3. Structural Sensitivity of Dry Storage Canisters

    SciTech Connect (OSTI)

    Klymyshyn, Nicholas A.; Karri, Naveen K.; Adkins, Harold E.; Hanson, Brady D.

    2013-09-27

    This LS-DYNA modeling study evaluated a generic used nuclear fuel vertical dry storage cask system under tip-over, handling drop, and seismic load cases to determine the sensitivity of the canister containment boundary to these loads. The goal was to quantify the expected failure margins to gain insight into what material changes over the extended long-term storage lifetime could have the most influence on the security of the containment boundary. It was determined that the tip-over case offers a strong challenge to the containment boundary, and identifies one significant material knowledge gap, the behavior of welded stainless steel joints under high-strain-rate conditions. High strain rates are expected to increase the material’s effective yield strength and ultimate strength, and may decrease its ductility. Determining and accounting for this behavior could potentially reverse the model prediction of a containment boundary failure at the canister lid weld. It must be emphasized that this predicted containment failure is an artifact of the generic system modeled. Vendor specific designs analyze for cask tip-over and these analyses are reviewed and approved by the Nuclear Regulatory Commission. Another location of sensitivity of the containment boundary is the weld between the base plate and the canister shell. Peak stresses at this location predict plastic strains through the whole thickness of the welded material. This makes the base plate weld an important location for material study. This location is also susceptible to high strain rates, and accurately accounting for the material behavior under these conditions could have a significant effect on the predicted performance of the containment boundary. The handling drop case was largely benign to the containment boundary, with just localized plastic strains predicted on the outer surfaces of wall sections. It would take unusual changes in the handling drop scenario to harm the containment boundary, such as raising the drop height or changing the impact angle. The seismic load case was derived from the August 23, 2011 earthquake that affected the North Anna power station. The source of the data was a monitoring station near Charlottesville, Virginia, so the ground motion is not an exact match. Stresses on the containment boundary were so low, even from a fatigue standpoint, that the seismic load case is generally not a concern. Based on this study, it is recommended that high strain rate testing of welded stainless steel test samples be pursued to define the currently unknown material behavior. Additional modeling is recommended to evaluate specific dry storage cask system designs subjected to tip-over loads using a high level of model detail. Additional modeling of the canister interior components (basket, fuel assemblies, etc.) is also recommended, to evaluate the feasibility of fuel retrievability after a tip-over incident. Finally, additional modeling to determine how much degradation a system could undergo and still maintain the integrity of the confinement barrier should be performed.

  4. Mapping Biomass Distribution Potential

    E-Print Network [OSTI]

    Schaetzel, Michael

    2010-11-18

    stream_size 1487 stream_content_type text/plain stream_name ku_gis_day_2010_schaetzel.pdf.txt stream_source_info ku_gis_day_2010_schaetzel.pdf.txt Content-Encoding UTF-8 Content-Type text/plain; charset=UTF-8 Mapping Biomass... Distribution Potential Michael Schaetzel Undergraduate ? Environmental Studies ? University of Kansas L O C A T S I O N BIOMASS ENERGY POTENTIAL o According to DOE, Biomass has the potential to provide 14% of the nation’s power o Currently 1% of...

  5. Method for forming a potential hydrocarbon sensor with low sensitivity to methane and CO

    DOE Patents [OSTI]

    Mukundan, Rangachary (Santa Fe, NM); Brosha, Eric L. (Los Alamos, NM); Garzon, Fernando (Santa Fe, NM)

    2003-12-02

    A hydrocarbon sensor is formed with an electrolyte body having a first electrolyte surface with a reference electrode depending therefrom and a metal oxide electrode body contained within the electrolyte body and having a first electrode surface coplanar with the first electrolyte surface. The sensor was formed by forming a sintered metal-oxide electrode body and placing the metal-oxide electrode body within an electrolyte powder. The electrolyte powder with the metal-oxide electrode body was pressed to form a pressed electrolyte body containing the metal-oxide electrode body. The electrolyte was removed from an electrolyte surface above the metal-oxide electrode body to expose a metal-oxide electrode surface that is coplanar with the electrolyte surface. The electrolyte body and the metal-oxide electrode body were then sintered to form the hydrocarbon sensor.

  6. Sensitivity of Watershed Runoff under Humid Conditions to Potential Climate Variations

    E-Print Network [OSTI]

    Szilagyi, Jozsef

    by the U.S. National Research Council NRC 2000 states that the Earth's surface temperature has risen by 0, in turn, will affect soil erosion rates, pollution by industrial and wastewater effluents, and pathogen outbreaks in the United Kingdom U.K. Dept. of the Environment 1990 , Montana Weni- ger et al. 1983 , and

  7. Assessment of the LFAs-PBE exchange-correlation potential for high-order harmonic generation of aligned H2+ molecules

    E-Print Network [OSTI]

    Sun, Hsiao-Ling; Chai, Jeng-Da

    2015-01-01

    We examine the performance of our recently developed LFAs-PBE exchange-correlation (XC) potential [C.-R. Pan, P.-T. Fang, and J.-D. Chai, Phys. Rev. A, 2013, 87, 052510] for the high-order harmonic generation (HHG) spectra and related properties of H2+ molecules aligned parallel and perpendicular to the polarization of an intense linearly polarized laser pulse, employing the real-time formulation of time-dependent density functional theory (RT-TDDFT). The results are compared with the exact solutions of the time-dependent Schr\\"odinger equation as well as those obtained with other XC potentials in RT-TDDFT. Owing to its correct $(-1/r)$ asymptote, the LFAs-PBE potential significantly outperforms conventional XC potentials for the HHG spectra and the properties that are sensitive to the XC potential asymptote. Accordingly, the LFAs-PBE potential, which has a computational cost similar to that of the popular Perdew-Burke-Ernzerhof (PBE) potential, can be very promising for the study of the ground-state, excited...

  8. Sense and sensitivity of double beta decay experiments

    SciTech Connect (OSTI)

    Gómez-Cadenas, J.J.; Martín-Albo, J.; Sorel, M.; Ferrario, P.; Monrabal, F.; Muñoz, J. [Instituto de Física Corpuscular (IFIC), CSIC and Universidad de Valencia, Calle Catedrático José Beltrán 2, 46071 Valencia (Spain); Novella, P. [Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avda. Complutense 22, 28040 Madrid (Spain); Poves, A., E-mail: gomez@mail.cern.ch, E-mail: justo.martin-albo@ific.uv.es, E-mail: sorel@ific.uv.es, E-mail: paola.ferrario@ific.uv.es, E-mail: francesc.monrabal@ific.uv.es, E-mail: jmunoz@ific.uv.es, E-mail: pau.novella@ciemat.es, E-mail: alfredo.poves@uam.es [Dpto. de de Física Teórica and IFT-UAM/CSIC, Universidad Autónoma de Madrid, Calle Nicolás Cabrera 13-15, 28049 Madrid (Spain)

    2011-06-01

    The search for neutrinoless double beta decay is a very active field in which the number of proposals for next-generation experiments has proliferated. In this paper we attempt to address both the sense and the sensitivity of such proposals. Sensitivity comes first, by means of proposing a simple and unambiguous statistical recipe to derive the sensitivity to a putative Majorana neutrino mass, m{sub ??}. In order to make sense of how the different experimental approaches compare, we apply this recipe to a selection of proposals, comparing the resulting sensitivities. We also propose a ''physics-motivated range'' (PMR) of the nuclear matrix elements as a unifying criterium between the different nuclear models. The expected performance of the proposals is parametrized in terms of only four numbers: energy resolution, background rate (per unit time, isotope mass and energy), detection efficiency, and ?? isotope mass. For each proposal, both a reference and an optimistic scenario for the experimental performance are studied. In the reference scenario we find that all the proposals will be able to partially explore the degenerate spectrum, without fully covering it, although four of them (KamLAND-Zen, CUORE, NEXT and EXO) will approach the 50 meV boundary. In the optimistic scenario, we find that CUORE and the xenon-based proposals (KamLAND-Zen, EXO and NEXT) will explore a significant fraction of the inverse hierarchy, with NEXT covering it almost fully. For the long term future, we argue that {sup 136}Xe-based experiments may provide the best case for a 1-ton scale experiment, given the potentially very low backgrounds achievable and the expected scalability to large isotope masses.

  9. Agility metric sensitivity using linear error theory 

    E-Print Network [OSTI]

    Smith, David Matthew

    2000-01-01

    Aircraft agility metrics have been proposed for use to measure the performance and capability of aircraft onboard while in-flight. The sensitivity of these metrics to various types of errors and uncertainties is not ...

  10. Ground potential rise monitor

    DOE Patents [OSTI]

    Allen, Zachery Warren; Zevenbergen, Gary Allen

    2012-07-17

    A device and method for detecting ground potential rise (GPR) comprising a first electrode, a second electrode, and a voltage attenuator. The first electrode and the second electrode are both electrically connected to the voltage attenuator. A means for determining the presence of a dangerous ground potential is connected to the voltage attenuator. The device and method further comprises a means for enabling one or more alarms upon the detection of the dangerous ground potential. Preferably, a first transmitter/receiver is connected to the means for enabling one or more alarms. Preferably, a second transmitter/receiver, comprising a button, is electromagnetically connected to the first transmitter/receiver. Preferably, the means for determining the presence of a dangerous ground potential comprises a means for determining the true RMS voltage at the output of the voltage attenuator, a transient detector connected to the output of the voltage attenuator, or a combination thereof.

  11. Logistic Map Potentials

    E-Print Network [OSTI]

    Thomas Curtright; Andrzej Veitia

    2010-05-27

    We develop and illustrate methods to compute all single particle potentials that underlie the logistic map, x --> sx(1-x) for 02. We illustrate the methods numerically for the cases s=5/2 and s=10/3.

  12. Multi-step contrast sensitivity gauge

    DOE Patents [OSTI]

    Quintana, Enrico C; Thompson, Kyle R; Moore, David G; Heister, Jack D; Poland, Richard W; Ellegood, John P; Hodges, George K; Prindville, James E

    2014-10-14

    An X-ray contrast sensitivity gauge is described herein. The contrast sensitivity gauge comprises a plurality of steps of varying thicknesses. Each step in the gauge includes a plurality of recesses of differing depths, wherein the depths are a function of the thickness of their respective step. An X-ray image of the gauge is analyzed to determine a contrast-to-noise ratio of a detector employed to generate the image.

  13. Physics Potential of Future Atmospheric Neutrino Searches

    E-Print Network [OSTI]

    Thomas Schwetz

    2008-12-12

    The potential of future high statistics atmospheric neutrino experiments is considered, having in mind currently discussed huge detectors of various technologies (water Cerekov, magnetized iron, liquid Argon). I focus on the possibility to use atmospheric data to determine the octant of $\\theta_{23}$ and the neutrino mass hierarchy. The sensitivity to the $\\theta_{23}$-octant of atmospheric neutrinos is competitive (or even superior) to long-baseline experiments. I discuss the ideal properties of a fictitious atmospheric neutrino detector to determine the neutrino mass hierarchy.

  14. Author's personal copy Sensitivity of the Atlantic Ocean circulation to a hydraulic overflow

    E-Print Network [OSTI]

    Levermann, Anders

    Author's personal copy Sensitivity of the Atlantic Ocean circulation to a hydraulic overflow the explicit representation of the overflows using a parameterisation by hydraulic constraints and compare circulation (AMOC) (Redler and Böning, 1997; Kuhlbrodt et al., 2007). The potential energy stored in the dense

  15. University of Alberta Expression Data Flow Graph: Precise Flow-Sensitive Pointer Analysis for C Programs

    E-Print Network [OSTI]

    Amaral, José Nelson

    University of Alberta Expression Data Flow Graph: Precise Flow-Sensitive Pointer Analysis for C Thiessen Fall 2011 Edmonton, Alberta Permission is hereby granted to the University of Alberta Libraries, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other

  16. Tsunami Generation by Submarine Mass Failure. I: Modeling, Experimental Validation, and Sensitivity Analyses

    E-Print Network [OSTI]

    Grilli, Stéphan T.

    Tsunami Generation by Submarine Mass Failure. I: Modeling, Experimental Validation, and Sensitivity with a two-dimensional 2D fully nonlinear potential flow FNPF model for tsunami generation by two idealized types of submarine mass failure SMF : underwater slides and slumps. These simulations feature rigid

  17. Deriving effective mesoscale potentials from atomistic simulations

    E-Print Network [OSTI]

    Dirk Reith; Mathias Puetz; Florian Mueller-Plathe

    2002-11-20

    We demonstrate how an iterative method for potential inversion from distribution functions developed for simple liquid systems can be generalized to polymer systems. It uses the differences in the potentials of mean force between the distribution functions generated from a guessed potential and the true (simulated) distribution functions to improve the effective potential successively. The optimization algorithm is very powerful: convergence is reached for every trial function in few iterations. As an extensive test case we coarse-grained an atomistic all-atom model of poly (isoprene) (PI) using a 13:1 reduction of the degrees of freedom. This procedure was performed for PI solutions as well as for a PI melt. Comparisons of the obtained force fields are drawn. They prove that it is not possible to use a single force field for different concentration regimes.

  18. AndroidLeaks: Automatically Detecting Potential Privacy Leaks In Android Applications

    E-Print Network [OSTI]

    Chen, Hao

    AndroidLeaks: Automatically Detecting Potential Privacy Leaks In Android Applications on a Large of sensitive information, they may leak it carelessly or maliciously. Google's Android operating systemLeaks, a static analysis framework for automatically finding poten- tial leaks of sensitive information in Android

  19. Comparison of radiative accelerations obtained with atomic data from OP and OPAL

    E-Print Network [OSTI]

    Franck Delahaye; Marc Pinsonneault

    2004-11-30

    Here, we compare radiative accelerations (g_rad) derived from the new Opacity Project (OP) data with those computed from OPAL and some previous data from OP. For the case where we have full data from OPAL, the differences in the Rosseland mean opacities between OPAL and the new OP data are within 12% and less than 30% between new OP and previous OP data (OP1 at CDS). The radiative accelerations g_rad differ at up to the 17% level when compared to OPAL and up to the 38% level when compared to OP1. The comparison with OP1 on a larger (rho-T) space gives a difference of up to 40% for g_rad(C). And it increases for heavier elements. The differences increase for heavier elements reaching 60% for Si and 65% for S and Fe. We also constructed four representative stellar models in order to compare the new OP accelerations with prior published results that used OPAL data. The Rosseland means overall agree better than 10% for all of our cases. For the accelerations, the comparisons with published values yield larger differences in general. The published OPAL accelerations for carbon are even larger relative to OP compare to what our direct comparisons would indicate. Potential reasons for this puzzling behavior are discussed. In light of the significant differences in the inferred acceleration rates, theoretical errors should be taken into account when comparing models with observations. The implications for stellar evolution are briefly discussed. The sensitivity of g_rad to the atomic physics may provide a useful test of different opacity sources.

  20. Atmospheric Condensation Potential of Windows in Hot, Humid Climates 

    E-Print Network [OSTI]

    El Diasty, R.; Budaiwi, I.

    1992-01-01

    condensation rate has been obtained by utilizing a simplified transient uni-dimensional finite difference model. The results show that this model has enhanced the assessment of the potential for atmospheric condensation on windows in hot, humid climates...

  1. Reassessing Wind Potential Estimates for India: Economic and Policy Implications

    SciTech Connect (OSTI)

    Phadke, Amol; Bharvirkar, Ranjit; Khangura, Jagmeet

    2011-09-15

    We assess developable on-shore wind potential in India at three different hub-heights and under two sensitivity scenarios – one with no farmland included, the other with all farmland included. Under the “no farmland included” case, the total wind potential in India ranges from 748 GW at 80m hub-height to 976 GW at 120m hub-height. Under the “all farmland included” case, the potential with a minimum capacity factor of 20 percent ranges from 984 GW to 1,549 GW. High quality wind energy sites, at 80m hub-height with a minimum capacity factor of 25 percent, have a potential between 253 GW (no farmland included) and 306 GW (all farmland included). Our estimates are more than 15 times the current official estimate of wind energy potential in India (estimated at 50m hub height) and are about one tenth of the official estimate of the wind energy potential in the US.

  2. General Methods for Syntheses MODIFY AS APPROPRIATE All chemicals were obtained from commercial suppliers and used

    E-Print Network [OSTI]

    Burgess, Kevin

    suppliers and used without further purification. Dichloromethane was obtained anhydrous by distillation over indicated. All chemicals were obtained from commercial suppliers and used without further purification. N2

  3. The three-baryon $?NN$ potential

    E-Print Network [OSTI]

    A. A. Usmani

    1995-03-27

    Using a three-baryon $\\Lambda NN$ potential having a spin-independent dispersive and a two-pion exchange components, realistic variational Monte Carlo calculations have been performed for the $\\Lambda$-seperation energy for $^{5}_{\\Lambda}$He. A relationship between strengths associated with both pieces of $\\Lambda NN$ force giving exact experimental $\\Lambda$-seperation energy has been obtained which then combined with our previous study on $^{17}_{\\,\\,\\Lambda}$O hypernucleus determines a unique and acceptable set of strength parameters for $\\Lambda NN$ potential. The $\\Lambda NN$ force is found important for the core polarization.

  4. Feynman integral treatment of the Bargmann potential

    SciTech Connect (OSTI)

    Diaf, A.; Chouchaoui, A. . E-mail: akchouchaoui@yahoo.fr; Lombard, R.J.

    2005-06-01

    A method based on path integral formulation is given for obtaining exact solution of the s states for the Bargmann potentialV(r)=1ka{sup 2}{beta}({beta}-1)e{sup -2r/a}1-e{sup -r/a2}-Ae{sup -r/a}1-e{sup -r=} /{sup a},where {beta} and k are parameters. The exact energy spectrum and the normalised s-state eigenfunctions are obtained from the poles of the Green function and their residues, respectively. The results are compared with their of Schrodinger formalism, special cases are also discussed.

  5. LABORATORY III POTENTIAL ENERGY

    E-Print Network [OSTI]

    Minnesota, University of

    LABORATORY III POTENTIAL ENERGY Lab III - 1 In previous problems, you have been introduced to the concepts of kinetic energy, which is associated with the motion of an object, and internal energy, which is associated with the internal structure of a system. In this section, you work with another form of energy

  6. Enhancing the Sensitivity of Label-free Silicon Photonic Biosensors...

    Office of Scientific and Technical Information (OSTI)

    Enhancing the Sensitivity of Label-free Silicon Photonic Biosensors through Increased Probe Molecule Density Citation Details In-Document Search Title: Enhancing the Sensitivity of...

  7. Sensitivity Analysis and Parameter Optimization Using 1-D MHD...

    Office of Scientific and Technical Information (OSTI)

    Sensitivity Analysis and Parameter Optimization Using 1-D MHD Simulations of Magnetic Drive Experiments. Citation Details In-Document Search Title: Sensitivity Analysis and...

  8. Maternal Contributions to the Development of Contamination Sensitivity

    E-Print Network [OSTI]

    Beebe, Heidi

    2012-01-01

    The development of contamination sensitivity to "disgusting"of conservation and contamination: Invisible particles as areference to disgust and contamination sensitivity. Child

  9. The Kanatzidis - Chang Cell: dye sensitized all solid state solar...

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

    The Kanatzidis - Chang Cell: dye sensitized all solid state solar cell Home > Research > ANSER Research Highlights > The Kanatzidis - Chang Cell: dye sensitized all solid state...

  10. A Sensitivity Analysis of a Thin Film Conductivity Estimation...

    Office of Scientific and Technical Information (OSTI)

    Conference: A Sensitivity Analysis of a Thin Film Conductivity Estimation Method Citation Details In-Document Search Title: A Sensitivity Analysis of a Thin Film Conductivity...

  11. The Sensitivity of DPF Performance to the Spatial Distribution...

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

    The Sensitivity of DPF Performance to the Spatial Distribution of Ash Generated from Six Lubricant Formulations The Sensitivity of DPF Performance to the Spatial Distribution of...

  12. Super-Sensitive and Robust Biosensors from Supported Polymer...

    Office of Scientific and Technical Information (OSTI)

    Super-Sensitive and Robust Biosensors from Supported Polymer Bilayers Citation Details In-Document Search Title: Super-Sensitive and Robust Biosensors from Supported Polymer...

  13. Chan. Automated Composer of Style Sensitive Music AUTOMATED COMPOSER OF STYLE SENSITIVE MUSIC

    E-Print Network [OSTI]

    Rubinstein, Benjamin

    Chan. Automated Composer of Style Sensitive Music AUTOMATED COMPOSER OF STYLE SENSITIVE MUSIC: Although much effort has been devoted to automating music composition through a variety of algorithms and methods, the resulting works seldom imitate musical style. This paper draws on existing ideas to propose

  14. Factorization method and new potentials from the inverted oscillator

    SciTech Connect (OSTI)

    Bermudez, David Fernández C, David J.

    2013-06-15

    In this article we will apply the first- and second-order supersymmetric quantum mechanics to obtain new exactly-solvable real potentials departing from the inverted oscillator potential. This system has some special properties; in particular, only very specific second-order transformations produce non-singular real potentials. It will be shown that these transformations turn out to be the so-called complex ones. Moreover, we will study the factorization method applied to the inverted oscillator and the algebraic structure of the new Hamiltonians. -- Highlights: •We apply supersymmetric quantum mechanics to the inverted oscillator potential. •The complex second-order transformations allow us to build new non-singular potentials. •The algebraic structure of the initial and final potentials is analyzed. •The initial potential is described by a complex-deformed Heisenberg–Weyl algebra. •The final potentials are described by polynomial Heisenberg algebras.

  15. Phototransistor Behavior Based on Dye-Sensitized Solar Cell

    E-Print Network [OSTI]

    Wang, X Q; Wang, Y F; Zhou, W Q; Lu, Y M; Liu, Z Y

    2012-01-01

    In the present work, a light-controlled device cell is established based on the dye-sensitized solar cell using nanocrystalline TiO2 films. Voltage-current curves are characterized by three types of transport behaviors: linear increase, saturated plateau and breakdown-like increase, which are actually of the typical performances for a photo-gated transistor. Moreover, an asymmetric behavior is observed in the voltage-current loops, which is believed to arise from the difference in the effective photo-conducting areas. The photovoltaic voltage between the shared counter electrode and drain (VCE-D) is investigated as well, clarifying that the predominant dark process in source and the predominant photovoltaic process in drain are series connected, modifying the electric potential levels and thus resulting in the characteristic phototransistor behaviors.

  16. Shock sensitivity of LX 04 at elevated temperatures

    SciTech Connect (OSTI)

    Urtiew, P.A.; Tarver, C.M.; Gorbes, J.W.; Garcia, G.

    1997-07-01

    Hazard scenarios can involve multiple stimuli, such as heating followed by fragment impact (shock). The shock response of LX-04 (85 weight % HMX and 15 weight % Viton binder) preheated to temperatures hear 170C is studied in a 10.2 cm bore diameter gas gun using embedded manganin pressure gauges. The pressure histories at various depths in the LX-04 targets and the run distances to detonation at several input shock pressures are measured and compared to those obtained in ambient temperature LX-04. The hot LX-04 is significantly more shock sensitive than ambient LX-04. Ignition and Growth reactive flow models are developed for ambient and hot LX-04 to allow predictions of impact scenarios that a can not be tested directly.

  17. Sensitivity studies for the main r process: ?-decay rates

    SciTech Connect (OSTI)

    Mumpower, M.; Cass, J.; Passucci, G.; Aprahamian, A. [Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)] [Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States); Surman, R. [Department of Physics and Astronomy, Union College, Schenectady, New York 12308 (United States)] [Department of Physics and Astronomy, Union College, Schenectady, New York 12308 (United States)

    2014-04-15

    The pattern of isotopic abundances produced in rapid neutron capture, or r-process, nucleosynthesis is sensitive to the nuclear physics properties of thousands of unstable neutron-rich nuclear species that participate in the process. It has long been recognized that the some of the most influential pieces of nuclear data for r-process simulations are ?-decay lifetimes. In light of experimental advances that have pushed measurement capabilities closer to the classic r-process path, we revisit the role of individual ?-decay rates in the r process. We perform ?-decay rate sensitivity studies for a main (A > 120) r process in a range of potential astrophysical scenarios. We study the influence of individual rates during (n, ?)-(?, n) equilibrium and during the post-equilibrium phase where material moves back toward stability. We confirm the widely accepted view that the most important lifetimes are those of nuclei along the r-process path for each astrophysical scenario considered. However, we find in addition that individual ?-decay rates continue to shape the final abundance pattern through the post-equilibrium phase, for as long as neutron capture competes with ? decay. Many of the lifetimes important for this phase of the r process are within current or near future experimental reach.

  18. Scalar potential model progress

    E-Print Network [OSTI]

    J. C. Hodge

    2007-04-04

    Because observations of galaxies and clusters have been found inconsistent with General Relativity (GR), the focus of effort in developing a Scalar Potential Model (SPM) has been on the examination of galaxies and clusters. The SPM has been found to be consistent with cluster cellular structure, the flow of IGM from spiral galaxies to elliptical galaxies, intergalactic redshift without an expanding universe, discrete redshift, rotation curve (RC) data without dark matter, asymmetric RCs, galaxy central mass, galaxy central velocity dispersion, and the Pioneer Anomaly. In addition, the SPM suggests a model of past expansion, past contraction, and current expansion of the universe. GR corresponds to the SPM in the limit in which the effect of the Sources and Sinks approximate a flat scalar potential field such as between clusters and on the solar system scale, which is small relative to the distance to a Source.

  19. Technical Evaluation Report "COS Thermal Sensitivity"

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    Technical Evaluation Report "COS Thermal Sensitivity" Date: November 6, 1998 Document Number: COS, COS Instrument Scientist, CU/CASA Date Approved By: D. Hood, Program Manager, BATC Date Approved By: J. Andrews, COS Experiment Manager, CU/CASA Date Approved By: J. C. Green, COS Principal Investigator, CU

  20. Bayesian Environmetrics: Uncertainty and Sensitivity Analysis

    E-Print Network [OSTI]

    Draper, David

    problems 1 #12;Outline Two case studies, both involving risk assessment for nuclear waste disposal methods has better repeated-sampling properties than maximum likelihood. -- Several (standard) fluid dynamics: uncertainty and sensitivity analysis and inverse problems 2 #12;Case Study 1: GESAMAC Nuclear fission

  1. Optical Design of a Red Sensitive Spectrograph 

    E-Print Network [OSTI]

    Martin, Emily 1988-

    2012-04-22

    We present a preliminary design for a red-sensitive spectrograph. The spectrograph is optimized to operate over the 600-1000nm spectral range at a resolution of ~2000 and is designed specifically for the 2.7-m Harlan J. Smith Telescope at Mc...

  2. Fabrication Procedures and Process Sensitivities for

    E-Print Network [OSTI]

    This paper details the laboratory processes used to fabricate CdS/CdTe solar cells at the National Renewable with an AM1.5 eciency of 15.4% as verified by the National Renewable Energy Laboratory. SOLAR CELLFabrication Procedures and Process Sensitivities for CdS/CdTe Solar Cells Doug H. Rose*, Falah S

  3. Cyclic Shape Invariant Potentials

    E-Print Network [OSTI]

    U. P. Sukhatme; C. Rasinariu; A. Khare

    1997-06-08

    We formulate and study the set of coupled nonlinear differential equations which define a series of shape invariant potentials which repeats after a cycle of $p$ iterations. These cyclic shape invariant potentials enlarge the limited reservoir of known analytically solvable quantum mechanical eigenvalue problems. At large values of $x$, cyclic superpotentials are found to have a linear harmonic oscillator behavior with superposed oscillations consisting of several systematically varying frequencies. At the origin, cyclic superpotentials vanish when the period $p$ is odd, but diverge for $p$ even. The eigenvalue spectrum consists of $p$ infinite sets of equally spaced energy levels, shifted with respect to each other by arbitrary energies $\\omega_0,\\omega_1,\\...,\\omega_{p-1}$. As a special application, the energy spacings $\\omega_k$ can be identified with the periodic points generatedby the logistic map $z_{k+1}=r z_k (1 - z_k)$. Increasing the value of $r$ and following the bifurcation route to chaos corresponds to studying cyclic shape invariant potentials as the period $p$ takes values 1,2,4,8,...

  4. Sub-SQL Sensitivity via Optical Rigidity in Advanced LIGO Interferometer with Optical Losses

    E-Print Network [OSTI]

    F. Ya. Khalili; V. I. Lazebny; S. P. Vyatchanin

    2005-11-02

    The ``optical springs'' regime of the signal-recycled configuration of laser interferometric gravitational-wave detectors is analyzed taking in account optical losses in the interferometer arm cavities. This regime allows to obtain sensitivity better than the Standard Quantum Limits both for a free test mass and for a conventional harmonic oscillator. The optical losses restrict the gain in sensitivity and achievable signal-to-noise ratio. Nevertheless, for parameters values planned for the Advanced LIGO gravitational-wave detector, this restriction is insignificant.

  5. Sub Shot-Noise interferometric phase sensitivity with Beryllium ions Schroedinger Cat States

    E-Print Network [OSTI]

    Luca Pezzé; Augusto Smerzi

    2007-05-25

    Interferometry with NOON quantum states can provide unbiased phase estimation with a sensitivity scaling as $\\Delta \\theta \\sim 1/N_T$ given a prior knowledge that the true phase shift $\\theta$ lies in the interval $-\\pi \\leq \\theta \\leq \\pi$. The protocol requires a total of $N_T = 2^{p}-1$ particles (unequally) distributed among $p$ independent measurements and overcomes basic difficulties present in previously proposed approaches. We demonstrate the possibility to obtain a phase sensitivity beating the classical shot-noise limit using published probabilities retrieved experimentally for the creation of Schr\\"odinger cat quantum states containing up to N=6 beryllium ions.

  6. WP 3 Report: Biomass Potentials Biomass production potentials

    E-Print Network [OSTI]

    WP 3 Report: Biomass Potentials 1 Biomass production potentials in Central and Eastern Europe under different scenarios Final report of WP3 of the VIEWLS project, funded by DG-Tren #12;WP 3 Report: Biomass Potentials 2 Report Biomass production potentials in central and Eastern Europe under different scenarios

  7. GTRI Private Data Competition Sensitive Printed Chem-Bio Sensor

    E-Print Network [OSTI]

    Das, Suman

    requires high sensitivity · 10 ppb for TNT, 10 ppt for Explosives (RDX, PETN) · Deployed on buildings

  8. TOUR: Time-sensitive Opportunistic Utility-TOUR: Time-sensitive Opportunistic Utility-TOUR: Time-sensitive Opportunistic Utility-TOUR: Time-sensitive Opportunistic Utility-based Routing in Delay Tolerant Networksbased Routing in Delay Tolerant Networksbas

    E-Print Network [OSTI]

    Wu, Jie

    TOUR: Time-sensitive Opportunistic Utility-TOUR: Time-sensitive Opportunistic Utility-TOUR: Time-sensitive Opportunistic Utility-TOUR: Time-sensitive Opportunistic Utility- based Routing in Delay Tolerant Networksbased on utility-based routingIntroduction on utility-based routingIntroduction on utility-based routing

  9. Manufacturers of light sensitive devices need to measure the

    E-Print Network [OSTI]

    Langendoen, Koen

    of light sensitive devices. The Solar cells testing system has won the Dutch Cleantech Challenge 2014

  10. Sensitivity of transitions in internal rotor molecules to a possible variation of the proton-to-electron mass ratio

    SciTech Connect (OSTI)

    Jansen, Paul; Ubachs, Wim; Bethlem, Hendrick L. [Institute for Lasers, Life and Biophotonics, VU University Amsterdam, De Boelelaan 1081, NL-1081 HV Amsterdam (Netherlands); Kleiner, Isabelle [Laboratoire Interuniversitaire des Systemes Atmospheriques (LISA), CNRS UMR 7583 et Universites Paris 7 et Paris Est, 61 avenue du General de Gaulle, FR-94010 Creteil Cedex (France); Xu, Li-Hong [Department of Physics and Centre for Laser, Atomic, and Molecular Sciences, University of New Brunswick, Saint John, New Brunswick, Canada E2L 4L5 (Canada)

    2011-12-15

    Recently, methanol was identified as a sensitive target system to probe variations of the proton-to-electron mass ratio {mu}[Jansen et al., Phys. Rev. Lett. 106, 100801 (2011)]. The high sensitivity of methanol originates from the interplay between overall rotation and hindered internal rotation of the molecule; that is, transitions that convert internal rotation energy into overall rotation energy, or vice versa, have an enhanced sensitivity coefficient, K{sub {mu}}. As internal rotation is a common phenomenon in polyatomic molecules, it is likely that other molecules display similar or even larger effects. In this paper we generalize the concepts that form the foundation of the high sensitivity in methanol and use this to construct an approximate model which makes it possible to estimate the sensitivities of transitions in internal rotor molecules with C{sub 3v} symmetry, without performing a full calculation of energy levels. We find that a reliable estimate of transition sensitivities can be obtained from the three rotational constants (A, B, and C) and three torsional constants (F, V{sub 3}, and {rho}). This model is verified by comparing obtained sensitivities for methanol, acetaldehyde, acetamide, methyl formate, and acetic acid with a full analysis of the molecular Hamiltonian. Of the molecules considered, methanol is by far the most suitable candidate for laboratory and cosmological tests searching for a possible variation of {mu}.

  11. Energy Resource Potential

    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 submitKansasCommunities EnergyU.S. DOE Office of99 Diagram4th, 2014Resource Potential

  12. Development of high sensitivity techniques for characterizing outgassing of polymeric construction materials for microenvironments

    SciTech Connect (OSTI)

    McIntyre, D.C.; Thornberg, S.M.; Liang, A.Y.; Bender, S.F.A.; Lujan, R.D.

    1994-05-01

    Further reductions in particulate contamination in semiconductor device manufacturing environments will be required to meet the future challenges of producing devices with decreased dimensions. Using pods (microenvironments) to provide very clean environments on a local (wafer level) scale is an alternative that may reduce the technological demands and cost of providing comparable contamination levels in an entire clean-room manufacturing facility. It has been demonstrated that pods can provide wafer environments that have lower and less variable levels of particulate contamination than conventional clean-room manufacturing environments. However, there have also been indications that outgassed constituents from polymeric pod materials can condense on wafers during storage. A standard technique to evaluate outgassing of polymers is needed so that: (1) manufacturers can make reliable comparisons of the outgassing potential of materials being considered for use and (2) microenvironment users can make judgments on the relative outgassing threats from different manufacturers` products. The goal of the work that is summarized below has been to develop standard high sensitivity (10--100 ppb) testing techniques for evaluation of outgassing from polymeric pod materials in a temperature range from 30 C--75 C. This paper will briefly review outgassing data from polycarbonate materials that was obtained using thermal desorption combined with detection using gas chromatography/mass spectroscopy wit volatile pre-concentration or using a flame ionization detector (FID). Although the focus of this program has been on developing techniques to evaluate pod materials of construction, the techniques that have been evaluated may be useful for characterizing outgassing from other polymeric materials found in cleanrooms.

  13. Physics Potential of the ICAL detector at the India-based Neutrino Observatory (INO)

    E-Print Network [OSTI]

    The ICAL Collaboration; Shakeel Ahmed; M. Sajjad Athar; Rashid Hasan; Mohammad Salim; S. K. Singh; S. S. R. Inbanathan; Venktesh Singh; V. S. Subrahmanyam; Shiba Prasad Behera; Vinay B. Chandratre; Nitali Dash; Vivek M. Datar; V. K. S. Kashyap; Ajit K. Mohanty; Lalit M. Pant; Animesh Chatterjee; Sandhya Choubey; Raj Gandhi; Anushree Ghosh; Deepak Tiwari; Ali Ajmi; S. Uma Sankar; Prafulla Behera; Aleena Chacko; Sadiq Jafer; James Libby; K. Raveendrababu; K. R. Rebin; D. Indumathi; K. Meghna; S. M. Lakshmi; M. V. N. Murthy; Sumanta Pal; G. Rajasekaran; Nita Sinha; Sanjib Kumar Agarwalla; Amina Khatun; Poonam Mehta; Vipin Bhatnagar; R. Kanishka; A. Kumar; J. S. Shahi; J. B. Singh; Monojit Ghosh; Pomita Ghoshal; Srubabati Goswami; Chandan Gupta; Sushant Raut; Sudeb Bhattacharya; Suvendu Bose; Ambar Ghosal; Abhik Jash; Kamalesh Kar; Debasish Majumdar; Nayana Majumdar; Supratik Mukhopadhyay; Satyajit Saha; B. S. Acharya; Sudeshna Banerjee; Kolahal Bhattacharya; Sudeshna Dasgupta; Moon Moon Devi; Amol Dighe; Gobinda Majumder; Naba K. Mondal; Asmita Redij; Deepak Samuel; B. Satyanarayana; Tarak Thakore; C. D. Ravikumar; A. M. Vinodkumar; Gautam Gangopadhyay; Amitava Raychaudhuri; Brajesh C. Choudhary; Ankit Gaur; Daljeet Kaur; Ashok Kumar; Sanjeev Kumar; Md. Naimuddin; Waseem Bari; Manzoor A. Malik; Jyotsna Singh; S. Krishnaveni; H. B. Ravikumar; C. Ranganathaiah; Swapna Mahapatra; Saikat Biswas; Subhasis Chattopadhyay; Rajesh Ganai; Tapasi Ghosh; Y. P. Viyogi

    2015-05-27

    The upcoming 50 kt magnetized iron calorimeter (ICAL) detector at the India-based Neutrino Observatory (INO) is designed to study the atmospheric neutrinos and antineutrinos separately over a wide range of energies and path lengths. The primary focus of this experiment is to explore the Earth matter effects by observing the energy and zenith angle dependence of the atmospheric neutrinos in the multi-GeV range. This study will be crucial to address some of the outstanding issues in neutrino oscillation physics, including the fundamental issue of neutrino mass hierarchy. In this document, we present the physics potential of the detector as obtained from realistic detector simulations. We describe the simulation framework, the neutrino interactions in the detector, and the expected response of the detector to particles traversing it. The ICAL detector can determine the energy and direction of the muons to a high precision, and in addition, its sensitivity to multi-GeV hadrons increases its physics reach substantially. Its charge identification capability, and hence its ability to distinguish neutrinos from antineutrinos, makes it an efficient detector for determining the neutrino mass hierarchy. In this report, we outline the analyses carried out for the determination of neutrino mass hierarchy and precision measurements of atmospheric neutrino mixing parameters at ICAL, and give the expected physics reach of the detector with 10 years of runtime. We also explore the potential of ICAL for probing new physics scenarios like CPT violation and the presence of magnetic monopoles.

  14. Organic photovoltaic cells with controlled polarization sensitivity

    SciTech Connect (OSTI)

    Awartani, Omar; O'Connor, Brendan T., E-mail: btoconno@ncsu.edu [Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina 27695 (United States); Kudenov, Michael W. [Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, North Carolina 27695 (United States)

    2014-03-03

    In this study, we demonstrate linearly polarized organic photovoltaic cells with a well-controlled level of polarization sensitivity. The polarized devices were created through the application of a large uniaxial strain to the bulk heterojunction poly(3-hexylthiophene):Phenyl-C61-butyric acid methyl ester (P3HT:PCBM) film and printing the plastically deformed active layer onto a PEDOT:PSS and indium tin oxide coated glass substrate. The P3HT:PCBM layer is processed such that it is able to accommodate high strains (over 100%) without fracture. After printing the strained films, thermal annealing is used to optimize solar cell performance while maintaining polarization sensitivity. A dichroic ratio and short circuit current ratio of ?6.1 and ?1.6 were achieved, respectively.

  15. Regional analysis of the impacts of climate change on cheatgrass invasion shows potential risk and opportunity

    E-Print Network [OSTI]

    Bradley, Bethany

    Regional analysis of the impacts of climate change on cheatgrass invasion shows potential risk to increase invasion risk to native ecosystems. Changing climate creates risk as new terrain becomes, followed by winter temperature. I perform a sensitivity analysis on potential cheatgrass distributions

  16. Exploiting level sensitive latches in wire pipelining 

    E-Print Network [OSTI]

    Seth, Vikram

    2005-02-17

    margin for setup time and clock skew, i.e. in the interval of [T -Tp,T -Tsetup-Tskew], as shown by the yellow shaded interval in Figure 3 for positive level sensitive latches. Here Tp is the duration of positive clock signal level... occupy certain region and disallow repeater or synchronous element insertions. In this scenario, the timing flexibility of latches can facilitate further TCLK TP Tn Tsetup 8 improvement on latency compared with flip-flop based wire...

  17. Quantum chaos and sensitivity to system parameters

    SciTech Connect (OSTI)

    Bhanot, G.V. (Institute for Advanced Study, Princeton, NJ (United States)); Parikh, J.C.; Sheorey, V.B. (Physical Research Lab., Navrangpura (India)); Pandey, A. (Jawaharlal Nehru Univ., New Delhi (India) Univ. of Rochester, NY (United States))

    1990-01-01

    The authors study the eigenfunctions and eigenvalues of the Hamiltonian H=p[sup 2][sub x]+p[sup 2][sub y]+x[sup 4]+y[sup 4]+[alpha]x[sup 2]y[sup 2] in the classically chaotic regime. It is shown that the overlap of wavefunctions at neighboring [alpha] values provides a sensitive measure to demonstrate the onset of chaos in quantum systems.

  18. Sensitivity of mRNA Translation

    E-Print Network [OSTI]

    Gilad Poker; Michael Margaliot; Tamir Tuller

    2014-09-18

    Using the dynamic mean-field approximation of the totally asymmetric simple exclusion process (TASEP), we investigate the effect of small changes in the initiation, exit, and elongation rates along the mRNA strand on the steady state protein translation rate. We focus on two special cases where exact closed-form expressions for the translation rate sensitivity can be derived. We discuss the ramifications of our results in the context of functional genomics, molecular evolution, and synthetic biology.

  19. Phase-sensitive X-ray imager

    DOE Patents [OSTI]

    Baker, Kevin Louis

    2013-01-08

    X-ray phase sensitive wave-front sensor techniques are detailed that are capable of measuring the entire two-dimensional x-ray electric field, both the amplitude and phase, with a single measurement. These Hartmann sensing and 2-D Shear interferometry wave-front sensors do not require a temporally coherent source and are therefore compatible with x-ray tubes and also with laser-produced or x-pinch x-ray sources.

  20. Sensitivity analysis of Stirling engine design parameters

    SciTech Connect (OSTI)

    Naso, V.; Dong, W.; Lucentini, M.; Capata, R.

    1998-07-01

    In the preliminary Stirling engine design process, the values of some design parameters (temperature ratio, swept volume ratio, phase angle and dead volume ratio) have to be assumed; as a matter of fact it can be difficult to determine the best values of these parameters for a particular engine design. In this paper, a mathematical model is developed to analyze the sensitivity of engine's performance variations corresponding to variations of these parameters.

  1. Obtaining parsimonious hydraulic conductivity fields using head and transport observations: A Bayesian

    E-Print Network [OSTI]

    Barrash, Warren

    Obtaining parsimonious hydraulic conductivity fields using head and transport observations parameter values (hydraulic conductivity in this case) which, in turn, determine flow paths. This work (2009), Obtaining parsimonious hydraulic conductivity fields using head and transport observations

  2. How to Obtain Authorization to Import and/or Export Natural Gas...

    Energy Savers [EERE]

    How to Obtain Authorization to Import andor Export Natural Gas and LNG How to Obtain Authorization to Import andor Export Natural Gas and LNG LNG Exports | Long Terms | Blanket...

  3. Stellarator Coil Design and Plasma Sensitivity

    SciTech Connect (OSTI)

    Long-Poe Ku and Allen H. Boozer

    2010-11-03

    The rich information contained in the plasma response to external magnetic perturbations can be used to help design stellarator coils more effectively. We demonstrate the feasibility by first devel- oping a simple, direct method to study perturbations in stellarators that do not break stellarator symmetry and periodicity. The method applies a small perturbation to the plasma boundary and evaluates the resulting perturbed free-boundary equilibrium to build up a sensitivity matrix for the important physics attributes of the underlying configuration. Using this sensitivity information, design methods for better stellarator coils are then developed. The procedure and a proof-of-principle application are given that (1) determine the spatial distributions of external normal magnetic field at the location of the unperturbed plasma boundary to which the plasma properties are most sen- sitive, (2) determine the distributions of external normal magnetic field that can be produced most efficiently by distant coils, (3) choose the ratios of the magnitudes of the the efficiently produced magnetic distributions so the sensitive plasma properties can be controlled. Using these methods, sets of modular coils are found for the National Compact Stellarator Experiment (NCSX) that are either smoother or can be located much farther from the plasma boundary than those of the present design.

  4. Shock sensitivity of IHE at elevated temperatures

    SciTech Connect (OSTI)

    Urtiew, P.A.; Cook, T.M.; Maienschein, J.L.; Tarver, C.M.

    1993-06-01

    Insensitive high explosives (IHE`s) based on triamino-trinitrobenzene (TATB) have been demonstrated to be very insensitive to shock, thermal, friction and other stimuli. Hazard scenarios can involve more than one stimulus, such as heating followed by fragment impact (shock). The shock sensitivity of the IHE`s LX-17 and PBX-9502 preheated to a temperature (250{degree}C) just below thermal runaway is quantitatively studied using embedded manganin pressure gauges. The thermal expansion of TATB to 250{degree}C is measured to determine the state of the explosive prior to shock initiation. LX-17 and PBX-9502 are found to be significantly more sensitive at 250{degree}C than at lower temperatures, but still less sensitive than ambient temperature HMX-based explosives. An ignition and growth reactive flow computer model of the shock initiation of hot IHE is developed to allow predictions of the response of hot IHE to impact scenarios which can not be tested directly.

  5. FIRST SOLAR CELLS ON SILICON RIBBONS OBTAINED BY FAST CVD FROM SILANE

    E-Print Network [OSTI]

    Lisbon, University of

    FIRST SOLAR CELLS ON SILICON RIBBONS OBTAINED BY FAST CVD FROM SILANE C. R. Pinto, J. M. Serra, M on solar cells made on silicon ribbons obtained by a two-step process: pre-ribbons obtained by CVD followed be doped to make them suitable as base material for solar cells. To this purpose the ribbons were

  6. Ground potential rise monitor

    DOE Patents [OSTI]

    Allen, Zachery W. (Mandan, ND); Zevenbergen, Gary A. (Arvada, CO)

    2012-04-03

    A device and method for detecting ground potential rise (GPR) comprising positioning a first electrode and a second electrode at a distance from each other into the earth. The voltage of the first electrode and second electrode is attenuated by an attenuation factor creating an attenuated voltage. The true RMS voltage of the attenuated voltage is determined creating an attenuated true RMS voltage. The attenuated true RMS voltage is then multiplied by the attenuation factor creating a calculated true RMS voltage. If the calculated true RMS voltage is greater than a first predetermined voltage threshold, a first alarm is enabled at a local location. If user input is received at a remote location acknowledging the first alarm, a first alarm acknowledgment signal is transmitted. The first alarm acknowledgment signal is then received at which time the first alarm is disabled.

  7. Positron scattering from hydrogen atom with screened Coulomb potentials

    SciTech Connect (OSTI)

    Ghoshal, Arijit [Department of Mathematics, Burdwan University, Golapbag, Burdwan 713 104, West Bengal, India and Institute of Mathematical Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur (Malaysia); Nayek, Sujay [Department of Mathematics, Burdwan University, Golapbag, Burdwan 713 104, West Bengal (India); Kamali, M. Z. M. [Centre for Foundation Studies in Sciences, University of Malaya, 50603 Kuala Lumpur (Malaysia); Ratnavelu, K. [Institute of Mathematical Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur (Malaysia)

    2014-03-05

    Elastic positron-hydrogen collisions with screened Coulomb potentials have been investigated using a second-order distorted wave Born approximation in the momentum space. Two types of potentials have been considered, namely, static screened Coulomb potential and exponential cosine-screened Coulomb potential. Using a simple variationally determined hydrogenic wave function it has been possible to obtain the scattering amplitude in a closed form. A detailed study has been made on the differential and total cross sections in the energy range 20–300 eV.

  8. Evaluation of Global Onshore Wind Energy Potential and Generation Costs

    SciTech Connect (OSTI)

    Zhou, Yuyu; Luckow, Patrick; Smith, Steven J.; Clarke, Leon E.

    2012-06-20

    In this study, we develop an updated global estimate of onshore wind energy potential using reanalysis wind speed data, along with updated wind turbine technology performance and cost assumptions as well as explicit consideration of transmission distance in the calculation of transmission costs. We find that wind has the potential to supply a significant portion of world energy needs, although this potential varies substantially by region as well as with assumptions such as on what types of land can be used to site wind farms. Total global wind potential under central assumptions is estimated to be approximately 89 petawatt hours per year at less than 9 cents/kWh with substantial regional variations. One limitation of global wind analyses is that the resolution of current global wind speed reanalysis data can result in an underestimate of high wind areas. A sensitivity analysis of eight key parameters is presented. Wind potential is sensitive to a number of input parameters, particularly those related to land suitability and turbine density as well as cost and financing assumptions which have important policy implications. Transmission cost has a relatively small impact on total wind costs, changing the potential at a given cost by 20-30%. As a result of sensitivities studied here we suggest that further research intended to inform wind supply curve development focus not purely on physical science, such as better resolved wind maps, but also on these less well-defined factors, such as land-suitability, that will also have an impact on the long-term role of wind power.

  9. Colorado Potential Geothermal Pathways

    SciTech Connect (OSTI)

    Zehner, Richard E.

    2012-02-01

    Citation Information: Originator: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Publication Date: 2012 Title: Colorado PRS Cool Fairways Edition: First Publication Information: Publication Place: Earth Science & Observation Center, Cooperative Institute for Research in Environmental Science (CIRES), University of Colorado, Boulder Publisher: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Description: This layer contains the weakened basement rocks. Isostatic gravity was utilized to identify structural basin areas, characterized by gravity low values reflecting weakened basement rocks. Together interpreted regional fault zones and basin outlines define geothermal "exploration fairways", where the potential exists for deep, superheated fluid flow in the absence of Pliocene or younger volcanic units Spatial Domain: Extent: Top: 4544698.569273 m Left: 144918.141004 m Right: 763728.391299 m Bottom: 4094070.397932 m Contact Information: Contact Organization: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Contact Person: Khalid Hussein Address: CIRES, Ekeley Building Earth Science & Observation Center (ESOC) 216 UCB City: Boulder State: CO Postal Code: 80309-0216 Country: USA Contact Telephone: 303-492-6782 Spatial Reference Information: Coordinate System: Universal Transverse Mercator (UTM) WGS’1984 Zone 13N False Easting: 500000.00000000 False Northing: 0.00000000 Central Meridian: -105.00000000 Scale Factor: 0.99960000 Latitude of Origin: 0.00000000 Linear Unit: Meter Datum: World Geodetic System ’1984 (WGS ’1984) Prime Meridian: Greenwich Angular Unit: Degree Digital Form: Format Name: Shape file

  10. Sensitivity and Uncertainty Analysis | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (BillionProvedTravelInformationCollectionGridRenoRhodeDepartment ofSecretaryiscongressSensitivity and

  11. High sensitivity leak detection method and apparatus

    DOE Patents [OSTI]

    Myneni, G.R.

    1994-09-06

    An improved leak detection method is provided that utilizes the cyclic adsorption and desorption of accumulated helium on a non-porous metallic surface. The method provides reliable leak detection at superfluid helium temperatures. The zero drift that is associated with residual gas analyzers in common leak detectors is virtually eliminated by utilizing a time integration technique. The sensitivity of the apparatus of this disclosure is capable of detecting leaks as small as 1 [times] 10[sup [minus]18] atm cc sec[sup [minus]1]. 2 figs.

  12. High sensitivity leak detection method and apparatus

    DOE Patents [OSTI]

    Myneni, Ganapatic R. (Grafton, VA)

    1994-01-01

    An improved leak detection method is provided that utilizes the cyclic adsorption and desorption of accumulated helium on a non-porous metallic surface. The method provides reliable leak detection at superfluid helium temperatures. The zero drift that is associated with residual gas analyzers in common leak detectors is virtually eliminated by utilizing a time integration technique. The sensitivity of the apparatus of this disclosure is capable of detecting leaks as small as 1.times.10.sup.-18 atm cc sec.sup.-1.

  13. Sensitivity approximation for robust stability and tracking 

    E-Print Network [OSTI]

    McLean, Chris Steven

    1984-01-01

    ) Norman W. Na gle (Member) Don R. Halverson (Member) William B. Jones (Head of Department) May 1984 1n Abstract Sensitivity Approximation for Robust Stability and Tracking. (May 1984) Chris Steven McLean, B. S, , Louisiana Tech University... indispensable to the completion of this thesis. I would like to thank Dr. S. P. Bhattacharyya for introducing me to the wonders of automatic control. I also would like to thank Dr. D. R. Halverson and Dr. N. W. Naugle for serving on my committee, Dr. John...

  14. BLM Sensitive Species | 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:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: EnergyYorkColorado State Office Jump to:FourOregonBLM Sensitive

  15. Uncertainty and sensitivity analysis for photovoltaic system modeling.

    SciTech Connect (OSTI)

    Hansen, Clifford W.; Pohl, Andrew Phillip; Jordan, Dirk

    2013-12-01

    We report an uncertainty and sensitivity analysis for modeling DC energy from photovoltaic systems. We consider two systems, each comprised of a single module using either crystalline silicon or CdTe cells, and located either at Albuquerque, NM, or Golden, CO. Output from a PV system is predicted by a sequence of models. Uncertainty in the output of each model is quantified by empirical distributions of each model's residuals. We sample these distributions to propagate uncertainty through the sequence of models to obtain an empirical distribution for each PV system's output. We considered models that: (1) translate measured global horizontal, direct and global diffuse irradiance to plane-of-array irradiance; (2) estimate effective irradiance from plane-of-array irradiance; (3) predict cell temperature; and (4) estimate DC voltage, current and power. We found that the uncertainty in PV system output to be relatively small, on the order of 1% for daily energy. Four alternative models were considered for the POA irradiance modeling step; we did not find the choice of one of these models to be of great significance. However, we observed that the POA irradiance model introduced a bias of upwards of 5% of daily energy which translates directly to a systematic difference in predicted energy. Sensitivity analyses relate uncertainty in the PV system output to uncertainty arising from each model. We found that the residuals arising from the POA irradiance and the effective irradiance models to be the dominant contributors to residuals for daily energy, for either technology or location considered. This analysis indicates that efforts to reduce the uncertainty in PV system output should focus on improvements to the POA and effective irradiance models.

  16. Validation and Comparison of Carbon Sequestration Project Cost Models with Project Cost Data Obtained from the Southwest Partnership

    SciTech Connect (OSTI)

    Robert Lee; Reid Grigg; Brian McPherson

    2011-04-15

    Obtaining formal quotes and engineering conceptual designs for carbon dioxide (CO{sub 2}) sequestration sites and facilities is costly and time-consuming. Frequently, when looking at potential locations, managers, engineers and scientists are confronted with multiple options, but do not have the expertise or the information required to quickly obtain a general estimate of what the costs will be without employing an engineering firm. Several models for carbon compression, transport and/or injection have been published that are designed to aid in determining the cost of sequestration projects. A number of these models are used in this study, including models by J. Ogden, MIT's Carbon Capture and Sequestration Technologies Program Model, the Environmental Protection Agency and others. This report uses the information and data available from several projects either completed, in progress, or conceptualized by the Southwest Regional Carbon Sequestration Partnership on Carbon Sequestration (SWP) to determine the best approach to estimate a project's cost. The data presented highlights calculated versus actual costs. This data is compared to the results obtained by applying several models for each of the individual projects with actual cost. It also offers methods to systematically apply the models to future projects of a similar scale. Last, the cost risks associated with a project of this scope are discussed, along with ways that have been and could be used to mitigate these risks.

  17. Biomass Energy Crops: Massachusetts' Potential

    E-Print Network [OSTI]

    Schweik, Charles M.

    plant fuel. We examine potential biomass energy demand in the 5-county area, and then review cropBiomass Energy Crops: Massachusetts' Potential Prepared for: Massachusetts Division of Energy is thought to have significantly more potential than forest biomass energy (Perlack, Wright et al. 2005). One

  18. Potential Impacts of CLIMATE CHANGE

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Potential Impacts of CLIMATE CHANGE on U.S. Transportation Potential Impacts of CLIMATE CHANGE on U.S. Transportation TRANSPORTATION RESEARCH BOARD SPECIAL REPORT 290 #12;#12;Committee on Climate Change and U Washington, D.C. 2008 www.TRB.org Potential Impacts of CLIMATE CHANGE on U.S. Transportation TRANSPORTATION

  19. RANGELAND SEQUESTRATION POTENTIAL ASSESSMENT

    SciTech Connect (OSTI)

    Lee Spangler; George F. Vance; Gerald E. Schuman; Justin D. Derner

    2012-03-31

    Rangelands occupy approximately half of the world's land area and store greater than 10% of the terrestrial biomass carbon and up to 30% of the global soil organic carbon. Although soil carbon sequestration rates are generally low on rangelands in comparison to croplands, increases in terrestrial carbon in rangelands resulting from management can account for significant carbon sequestration given the magnitude of this land resource. Despite the significance rangelands can play in carbon sequestration, our understanding remains limited. Researchers conducted a literature review to identify sustainably management practices that conserve existing rangeland carbon pools, as well as increase or restore carbon sequestration potentials for this type of ecosystem. The research team also reviewed the impact of grazing management on rangeland carbon dynamics, which are not well understood due to heterogeneity in grassland types. The literature review on the impact of grazing showed a wide variation of results, ranging from positive to negative to no response. On further review, the intensity of grazing appears to be a major factor in controlling rangeland soil organic carbon dynamics. In 2003, researchers conducted field sampling to assess the effect of several drought years during the period 1993-2002. Results suggested that drought can significantly impact rangeland soil organic carbon (SOC) levels, and therefore, carbon sequestration. Resampling was conducted in 2006; results again suggested that climatic conditions may have overridden management effects on SOC due to the ecological lag of the severe drought of 2002. Analysis of grazing practices during this research effort suggested that there are beneficial effects of light grazing compared to heavy grazing and non-grazing with respect to increased SOC and nitrogen contents. In general, carbon storage in rangelands also increases with increased precipitation, although researchers identified threshold levels of precipitation where sequestration begins to decrease.

  20. Chemical potential and the gap equation

    E-Print Network [OSTI]

    Huan Chen; Wei Yuan; Lei Chang; Yu-Xin Liu; Thomas Klahn; Craig D. Roberts

    2008-07-17

    In general the kernel of QCD's gap equation possesses a domain of analyticity upon which the equation's solution at nonzero chemical potential is simply obtained from the in-vacuum result through analytic continuation. On this domain the single-quark number- and scalar-density distribution functions are mu-independent. This is illustrated via two models for the gap equation's kernel. The models are alike in concentrating support in the infrared. They differ in the form of the vertex but qualitatively the results are largely insensitive to the Ansatz. In vacuum both models realise chiral symmetry in the Nambu-Goldstone mode and in the chiral limit, with increasing chemical potential, exhibit a first-order chiral symmetry restoring transition at mu~M(0), where M(p^2) is the dressed-quark mass function. There is evidence to suggest that any associated deconfinement transition is coincident and also of first-order.

  1. Radial Electron Collection in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Radial Electron Collection in Dye-Sensitized Solar Cells Alex B. F. Martinson,, Jeffrey W. Elam-sensitized solar cells (DSSCs). Atomic layer deposition is employed to grow indium tin oxide (ITO) within a porous

  2. On the Correlation between Forcing and Climate Sensitivity

    E-Print Network [OSTI]

    Sokolov, Andrei

    The possible correlation between climate sensitivity and radiative forcing is studied using versions of the NCAR Community Atmospheric Model (CAM) model with different climate sensitivities. No such correlation was found ...

  3. Persistent sensitivity of Asian aerosol to emissions of nitrogen oxides

    E-Print Network [OSTI]

    Kharol, S. K.

    We use a chemical transport model and its adjoint to examine the sensitivity of secondary inorganic aerosol formation to emissions of precursor trace gases from Asia. Sensitivity simulations indicate that secondary inorganic ...

  4. Hierarchically structured photoelectrodes for dye-sensitized solar cells

    E-Print Network [OSTI]

    Cao, Guozhong

    adsorption, more importantly, the hierarchically structured photoelectrodes may improve the solar cellHierarchically structured photoelectrodes for dye-sensitized solar cells Qifeng Zhang and Guozhong-sensitized solar cells using hierarchically structured photoelectrodes that consist of spherical or one

  5. First MR images obtained during megavoltage photon irradiation from a prototype integrated linac-MR system

    SciTech Connect (OSTI)

    Fallone, B. G.; Murray, B.; Rathee, S.; Stanescu, T.; Steciw, S.; Vidakovic, S.; Blosser, E.; Tymofichuk, D. [Department of Medical Physics, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta T6G 1Z2 (Canada) and Department of Oncology, Medical Physics Division, University of Alberta, 11560 University Avenue, Edmonton, Alberta T6G 1Z2 (Canada); Department of Medical Physics, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta T6G 1Z2 (Canada); Department of Medical Physics, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta T6G 1Z2 (Canada) and Department of Oncology, Medical Physics Division, University of Alberta, 11560 University Avenue, Edmonton, Alberta T6G 1Z2 (Canada); Department of Medical Physics, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta T6G 1Z2 (Canada)

    2009-06-15

    The authors report the first magnetic resonance (MR) images produced by their prototype MR system integrated with a radiation therapy source. The prototype consists of a 6 MV linac mounted onto the open end of a biplanar 0.2 T permanent MR system which has 27.9 cm pole-to-pole opening with flat gradients (40 mT/m) running under a TMX NRC console. The distance from the magnet isocenter to the linac target is 80 cm. The authors' design has resolved the mutual interferences between the two devices such that the MR magnetic field does not interfere with the trajectory of the electron in the linac waveguide, and the radiofrequency (RF) signals from each system do not interfere with the operation of the other system. Magnetic and RF shielding calculations were performed and confirmed with appropriate measurements. The prototype is currently on a fixed gantry; however, in the very near future, the linac and MR magnet will rotate in unison such that the linac is always aimed through the opening in the biplanar magnet. MR imaging was found to be fully operational during linac irradiation and proven by imaging a phantom with conventional gradient echo sequences. Except for small changes in SNR, MR images produced during irradiation were visually and quantitatively very similar to those taken with the linac turned off. This prototype system provides proof of concept that the design has decreased the mutual interferences sufficiently to allow the development of real-time MR-guided radiotherapy. Low field-strength systems (0.2-0.5 T) have been used clinically as diagnostic tools. The task of the linac-MR system is, however, to provide MR guidance to the radiotherapy beam. Therefore, the 0.2 T field strength would provide adequate image quality for this purpose and, with the addition of fast imaging techniques, has the potential to provide 4D soft-tissue visualization not presently available in image-guided radiotherapy systems. The authors' initial design incorporates a permanent magnet; however, other types of magnets and field strengths could also be incorporated. Usable MR images were obtained during linac irradiation from the linac-MR prototype. The authors' prototype design can be used as the functional starting point in developing real-time MR guidance offering soft-tissue contrast that can be coupled with tumor tracking for real-time adaptive radiotherapy.

  6. Harmonic potential and hadron spectroscopy

    E-Print Network [OSTI]

    Rafael Tumanyan

    2009-05-28

    The quark-gluon sea in the hadrons is considered as periodically correlated. Energy levels of Shrodinger equation with harmonic potential is used for describing of the spectrum of hadron masses. In the considered cases the effective potential operating on each particle of ensemble, under certain conditions becomes square-law on displacement from a equilibrium point. It can become an explanation of popularity of oscillator potential for the description of a spectrum of masses of elementary particles. The analysis shows that levels of periodic potential better agreed to the spectrum of hadron masses, than levels of other potentials used for an explanation of a spectrum of masses.

  7. Shock initiation sensitivity of PETN: A steric hindrance model

    SciTech Connect (OSTI)

    Dick, J.J.

    1991-01-01

    In this report, shock initiation sensitivity of PETN crystals is discussed. A new molecular model for shock sensitivity in crystalline solids is proposed in terms of steric hindrance to edge dislocation motion. This model is successful in predicting the relative shock sensitivities of the four PETN orientations studied, especially at low stresses. (JL)

  8. Dynamic tuning of chemiresistor sensitivity using mechanical strain

    DOE Patents [OSTI]

    Martin, James E; Read, Douglas H

    2014-09-30

    The sensitivity of a chemiresistor sensor can be dynamically tuned using mechanical strain. The increase in sensitivity is a smooth, continuous function of the applied strain, and the effect can be reversible. Sensitivity tuning enables the response curve of the sensor to be dynamically optimized for sensing analytes, such as volatile organic compounds, over a wide concentration range.

  9. Network-Design Sensitivity Analysis Paul Tune and Matthew Roughan

    E-Print Network [OSTI]

    Roughan, Matthew

    Network-Design Sensitivity Analysis Paul Tune and Matthew Roughan matthew University of Adelaide [3mm] )Network-Design Sensitivity Analysis July 2, 2014 1 / 29 #12;The Problem Traffic of Mathematical Sciences University of Adelaide [3mm] )Network-Design Sensitivity Analysis July 2, 2014 3 / 29 #12

  10. ZnO Nanotube Based Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    ZnO Nanotube Based Dye-Sensitized Solar Cells Alex B. F. Martinson,, Jeffrey W. Elam, Joseph T templated by anodic aluminum oxide for use in dye-sensitized solar cells (DSSCs). Atomic layer deposition of the best dye- sensitized solar cells (DSSCs) is the product of a dye with moderate extinction

  11. Test-Cost Sensitive Classification on Data with Missing Values

    E-Print Network [OSTI]

    Yang, Qiang

    values on several data sets. Index Terms--Cost-sensitive learning, decision trees, naive Bayes. æ 1Test-Cost Sensitive Classification on Data with Missing Values Qiang Yang, Senior Member, IEEE, Charles Ling, Xiaoyong Chai, and Rong Pan Abstract--In the area of cost-sensitive learning, inductive

  12. Climate Sensitivity of the Community Climate System Model Version 4

    E-Print Network [OSTI]

    Bitz, Cecilia

    Climate Sensitivity of the Community Climate System Model Version 4 C. M. Bitz 1 , K.M. Shell 2 , P. Equilibrium climate sensitivity of the Community Climate System Model Version 4 (CCSM4) is 3.20 C for 1 version (CCSM3). The transient climate sensitivity of CCSM4 at 1 resolution is 1.72 C, which is about 0

  13. Sending Sensitive Messages in Quantum Packages

    E-Print Network [OSTI]

    Paul A. Lopata; Thomas B. Bahder

    2006-06-02

    A communication protocol is introduced that allows the receiver of a message to place an a posteriori bound on the amount of information that an eavesdropper could have obtained during transmission of that message. This quantum cryptographic protocol is distinct from quantum key distribution. The quantum states and measurements required by this protocol are simple enough that it can be implemented using existing technology.

  14. High-Efficiency Photoelectrocatalytic Hydrogen Generation Enabled by Palladium Quantum Dots-Sensitized TiO2 Nanotube Arrays

    E-Print Network [OSTI]

    Lin, Zhiqun

    High-Efficiency Photoelectrocatalytic Hydrogen Generation Enabled by Palladium Quantum Dots of hydrogen as a potential fuel for renewable energy.1 Among the various catalysts, the noble metal palladium ABSTRACT: TiO2 nanotube arrays (TNTAs) sensitized by palladium quantum dots (Pd QDs) exhibit highly

  15. The Journal of Neuroscience, January 15, 1996, 16(2):519-530 Developmental Regulation of the Toxin Sensitivity of

    E-Print Network [OSTI]

    Fatatis, Alessandro

    The Journal of Neuroscience, January 15, 1996, 16(2):519-530 Developmental Regulation of the Toxin of these parameters were blocked by Joro spider toxin (JSTx) in undifferentiated cells. However, neither JSTx nor. This change in toxin sensitivity occurred slowly over a period of several days. Similar results were obtained

  16. 1 potential, 2 potentials, 3 potentials4: Untangling the UV photodissociation spectra of HI and DI

    E-Print Network [OSTI]

    Le Roy, Robert J.

    1 potential, 2 potentials, 3 potentials­4: Untangling the UV photodissociation spectra of HI and DI coefficient and branching-ratio data for the UV photodissociation spectra of HI and DI has been used.1063/1.1513303 I. INTRODUCTION The UV photochemical decomposition of HI has been studied for more than a century,1

  17. The chemistry of minerals obtained from the combustion of Jordanian oil shale

    E-Print Network [OSTI]

    Shawabkeh, Reyad A.

    The chemistry of minerals obtained from the combustion of Jordanian oil shale Awni Y. Al was performed on the spent oil shale (oil shale ash) obtained from the combustion of Jordanian oil shale process, minimal fragmentation was encountered since Jordanian oil shale contains large proportions of ash

  18. Method and apparatus for obtaining enhanced production rate of thermal chemical reactions

    DOE Patents [OSTI]

    Tonkovich, Anna Lee Y.; Wang, Yong; Wegeng, Robert S.; Gao, Yufei

    2003-09-09

    Reactors and processes are disclosed that can utilize high heat fluxes to obtain fast, steady-state reaction rates. Porous catalysts used in conjunction with microchannel reactors to obtain high rates of heat transfer are also disclosed. Reactors and processes that utilize short contact times, high heat flux and low pressure drop are described. Improved methods of steam reforming are also provided.

  19. Method and apparatus for obtaining enhanced production rate of thermal chemical reactions

    DOE Patents [OSTI]

    Tonkovich, Anna Lee Y. (Pasco, WA); Wang, Yong (Richland, WA); Wegeng, Robert S. (Richland, WA); Gao, Yufei (Kennewick, WA)

    2006-05-16

    Reactors and processes are disclosed that can utilize high heat fluxes to obtain fast, steady-state reaction rates. Porous catalysts used in conjunction with microchannel reactors to obtain high rates of heat transfer are also disclosed. Reactors and processes that utilize short contact times, high heat flux and low pressure drop are described. Improved methods of steam reforming are also provided.

  20. Influence of the contact potential and space-charge effect on the performance of a Stoffel-Johnson design electron source for inverse photoemission spectroscopy

    SciTech Connect (OSTI)

    Maniraj, M.; Barman, Sudipta Roy [UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore 452001, Madhya Pradesh (India)] [UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore 452001, Madhya Pradesh (India)

    2014-03-15

    By imaging the spatial intensity distribution of the electrons from a Stoffel-Johnson (SJ) type low energy electron source for inverse photoemission spectroscopy (IPES), we find that the focus is distorted when the beam current exceeds the limiting value due to space charge effect. The space charge effect and the contact potential difference suppress the beam current at low energies (<10 eV). In this work, we show that these limitations of the SJ source can be overcome by compensation of the contact potential difference between the cathode and the lens electrodes and an uniform well focused electron beam with the set kinetic energy can be obtained. The size of the electron beam is around 1 mm full width at half maximum over the whole energy range of 5 to 30 eV generally used for IPES. The compensation of the contact potential difference also enhances the beam current substantially at low energies (<10 eV) and uniform beam current is achieved for the whole energy range. We find that the drift in the electron beam position is sensitive to the lens electrode separation and it is about 1 mm over the whole energy range. By measuring the n = 1 image potential state on Cu(100), we show that the resolution is better when the cathode filament current is set to lower values.

  1. Chapter 20: Electric Potential and Electric Potential Energy

    E-Print Network [OSTI]

    Kioussis, Nicholas

    1 Chapter 20: Electric Potential and Electric Potential Energy 2. A 4.5 µC charge moves in a uniform electric field ( )5 ^4.1 10 N/C= ×E x . The change in electric potential energy of a charge that moves against an electric field is given by equation 20-1, 0U q Ed = . If the charge moves in the same

  2. Sorption of redox-sensitive elements: critical analysis

    SciTech Connect (OSTI)

    Strickert, R.G.

    1980-12-01

    The redox-sensitive elements (Tc, U, Np, Pu) discussed in this report are of interest to nuclear waste management due to their long-lived isotopes which have a potential radiotoxic effect on man. In their lower oxidation states these elements have been shown to be highly adsorbed by geologic materials occurring under reducing conditions. Experimental research conducted in recent years, especially through the Waste Isolation Safety Assessment Program (WISAP) and Waste/Rock Interaction Technology (WRIT) program, has provided extensive information on the mechanisms of retardation. In general, ion-exchange probably plays a minor role in the sorption behavior of cations of the above three actinide elements. Formation of anionic complexes of the oxidized states with common ligands (OH/sup -/, CO/sup - -//sub 3/) is expected to reduce adsorption by ion exchange further. Pertechnetate also exhibits little ion-exchange sorption by geologic media. In the reduced (IV) state, all of the elements are highly charged and it appears that they form a very insoluble compound (oxide, hydroxide, etc.) or undergo coprecipitation or are incorporated into minerals. The exact nature of the insoluble compounds and the effect of temperature, pH, pe, other chemical species, and other parameters are currently being investigated. Oxidation states other than Tc (IV,VII), U(IV,VI), Np(IV,V), and Pu(IV,V) are probably not important for the geologic repository environment expected, but should be considered especially when extreme conditions exist (radiation, temperature, etc.). Various experimental techniques such as oxidation-state analysis of tracer-level isotopes, redox potential measurement and control, pH measurement, and solid phase identification have been used to categorize the behavior of the various valence states.

  3. Two-dimensional position sensitive radiation detectors

    DOE Patents [OSTI]

    Mihalczo, J.T.

    1994-02-22

    Nuclear reaction detectors capable of position sensitivity with submillimeter resolution in two dimensions are each provided by placing arrays of scintillation or wavelength shifting optical fibers formed of a plurality of such optical fibers in a side-by-side relationship in X and Y directions with a layer of nuclear reactive material operatively associated with surface regions of the optical fiber arrays. Each nuclear reaction occurring in the layer of nuclear reactive material produces energetic particles for simultaneously providing a light pulse in a single optical fiber in the X oriented array and in a single optical fiber in the Y oriented array. These pulses of light are transmitted to a signal producing circuit for providing signals indicative of the X-Y coordinates of each nuclear event. 6 figures.

  4. Commercial Building Toplighting: Energy Saving Potential and Potential Paths Forward

    SciTech Connect (OSTI)

    Lawrence, Tyson; Roth, Kurt W.

    2008-06-01

    This report documents the energy-saving potential of toplighting, a form of daylighting that combines skylights and electric lighting controls.

  5. PHILOSOPHICAL MAGAZINE A, 1999, VOL. 79, NO. 8, 1953 1961 Interatomic potential tted for lead

    E-Print Network [OSTI]

    Gong, Xingao

    PHILOSOPHICAL MAGAZINE A, 1999, VOL. 79, NO. 8, 1953± 1961 Interatomic potential ® tted for lead D dynamics method, we numerically ® t an interatomic potential for lead. The potential obtained can correctly reproduce many physical properties of lead in crystalline and non-crystalline phases. The surface energy

  6. Light sterile neutrino sensitivity at the nuSTORM facility

    E-Print Network [OSTI]

    Adey, D; Ankenbrandt, C.M.; Asfandiyarov, R.; Back, J.J.; Barker, G.; Baussan, E.; Bayes, R.; Bhadra, S.; Blackmore, V.; Blondel, A.; Bogacz, S.A.; Booth, C.; Boyd, S.B.; Bramsiepe, S.G.; Bravar, A.; Brice, S.J.; Bross, A.D.; Cadoux, F.; Cease, H.; Cervera, A.; Cobb, J.; Colling, D.; Coloma, P.; Coney, L.; Dobbs, A.; Dobson, J.; Donini, A.; Dornan, P.; Dracos, M.; Dufour, F.; Edgecock, R.; Geelhoed, M.; Uchida, M.A.; Ghosh, T.; Gomez-Cadenas, J.J.; de Gouvea, A.; Haesler, A.; Hanson, G.; Harrison, P.F.; Hartz, M.; Hernandez, P.; Hernando Morata, J.A.; Hodgson, P.; Huber, P.; Izmaylov, A.; Karadzhov, Y.; Kobilarcik, T.; Kopp, J.; Kormos, L.; Korzenev, A.; Kuno, Y.; Kurup, A.; Kyberd, P.; Lagrange, J.B.; Laing, A.; Liu, A.; Link, J.M.; Long, K.; Mahn, K.; Mariani, C.; Martin, C.; Martin, J.; McCauley, N.; McDonald, K.T.; Mena, O.; Mishra, S.R.; Mokhov, N.; Morfin, J.; Mori, Y.; Murray, W.; Neuffer, D.; Nichol, R.; Noah, E.; Palmer, M.A.; Parke, S.; Pascoli, S.; Pasternak, J.; Plunkett, R.; Popovic, M.; Ratoff, P.; Ravonel, M.; Rayner, M.; Ricciardi, S.; Rogers, C.; Rubinov, P.; Santos, E.; Sato, A.; Sen, T.; Scantamburlo, E.; Sedgbeer, J.K.; Smith, D.R.; Smith, P.J.; Sobczyk, J.T.; Sby, L.; Soler, F.J.P.; Sorel, M.; Snopok, P.; Stamoulis, P.; Stanco, L.; Striganov, S.; Tanaka, H.A.; Taylor, I.J.; Touramanis, C.; Tunnell, C.D.; Uchida, Y.; Vassilopoulos, N.; Wascko, M.O.; Weber, A.; Wilking, M.J.; Wildner, E.; Winter, W.

    2014-01-01

    A facility that can deliver beams of electron and muon neutrinos from the decay of a stored muon beam has the potential to unambiguously resolve the issue of the evidence for light sterile neutrinos that arises in short-baseline neutrino oscillation experiments and from estimates of the effective number of neutrino flavors from fits to cosmological data. In this paper, we show that the nuSTORM facility, with stored muons of 3.8 GeV/c $\\pm$ 10%, will be able to carry out a conclusive muon neutrino appearance search for sterile neutrinos and test the LSND and MiniBooNE experimental signals with 10$\\sigma$ sensitivity, even assuming conservative estimates for the systematic uncertainties. This experiment would add greatly to our knowledge of the contribution of light sterile neutrinos to the number of effective neutrino flavors from the abundance of primordial helium production and from constraints on neutrino energy density from the cosmic microwave background. The appearance search is complemented by a simulta...

  7. Sensitivity of climate mitigation strategies to natural disturbances

    SciTech Connect (OSTI)

    Le Page, Yannick LB; Hurtt, George; Thomson, Allison M.; Bond-Lamberty, Benjamin; Patel, Pralit L.; Wise, Marshall A.; Calvin, Katherine V.; Kyle, G. Page; Clarke, Leon E.; Edmonds, James A.; Janetos, Anthony C.

    2013-02-19

    The present and future concentration of atmospheric carbon dioxide depends on both anthropogenic and natural sources and sinks of carbon. Most proposed climate mitigation strategies rely on a progressive transition to carbon12 efficient technologies to reduce industrial emissions, substantially supported by policies to maintain or enhance the terrestrial carbon stock in forests and other ecosystems. This strategy may be challenged if terrestrial sequestration capacity is affected by future climate feedbacks, but how and to what extent is little understood. Here, we show that climate mitigation strategies are highly sensitive to future natural disturbance rates (e.g. fires, hurricanes, droughts), because of potential effect of disturbances on the terrestrial carbon balance. Generally, altered disturbance rates affect the pace of societal and technological transitions required to achieve the mitigation target, with substantial consequences on the energy sector and on the global economy. Understanding the future dynamics and consequences of natural disturbances on terrestrial carbon balance is thus essential for developing robust climate mitigation strategies and policies

  8. Monochromatic wavelength dispersive x-ray fluorescence providing sensitive and selective detection of uranium

    SciTech Connect (OSTI)

    Havrilla, George J [Los Alamos National Laboratory; Collins, Michael L [Los Alamos National Laboratory; Montoya, Velma M [Los Alamos National Laboratory; Chen, Zewu [XOS; Wei, Fuzhong [XOS

    2010-01-01

    Monochromatic wavelength dispersive X-ray fluorescence (MWDXRF) is a sensitive and selective method for elemental compositional analyses. The basis for this instrumental advance is the doubly curved crystal (DCC) optic. Previous work has demonstrated the feasibility of sensitive trace element detection for yttrium as a surrogate for curium in aqueous solutions. Additional measurements have demonstrated similar sensitivity in several different matrix environments which attests to the selectivity of the DCC optic as well as the capabilities of the MWDXRF concept. The objective of this effort is to develop an improved Pu characterization method for nuclear fuel reprocessing plants. The MWDXRF prototype instrument is the second step in a multi-year effort to achieve an improved Pu assay. This work will describe a prototype MWDXRF instrument designed for uranium detection and characterization. The prototype consists of an X-ray tube with a rhodium anode and a DCC excitation optic incorporated into the source. The DCC optic passes the RhK{alpha} line at 20.214 keV for monochromatic excitation of the sample. The source is capable of 50 W power at 50 kV and 1.0 mA operation. The x-ray emission from the sample is collected by a DCC optic set at the UL{alpha} line of 13.613 keV. The collection optic transmits the UL{alpha} x-rays to the silicon drift detector. The x-ray source, sample, collection optic and detector are all mounted on motion controlled stages for the critical alignment of these components. The sensitivity and selectivity of the instrument is obtained through the monochromatic excitation and the monochromatic detection. The prototype instrument performance has a demonstrated for sensitivity for uranium detection of around 2 ppm at the current state of development. Further improvement in sensitivity is expected with more detailed alignment.

  9. Quantum dynamics of relativistic bosons through nonminimal vector square potentials

    E-Print Network [OSTI]

    de Oliveira, Luiz P

    2016-01-01

    The dynamics of relativistic scalar bosons through nonminimal vector square (well and barrier) potentials is studied in the Duffin-Kemmer-Petiau (DKP) formalism. We show that the problem can be mapped in effective Schrodinger equations for a component of the DKP spinor. An oscillatory transmission coefficient is found and there is total reflection. Additionally, the energy spectrum of bound states is obtained and reveals the Schiff-Snyder-Weinberg effect, for specific conditions the potential lodges bound states of particles and antiparticles. Comments about the vector bosons problem subject to square potentials are present.

  10. Aggregated TiO2 Based Nanotubes for Dye Sensitized Solar Cells

    SciTech Connect (OSTI)

    Nie, Zimin; Zhou, Xiaoyuan; Zhang, Qifeng; Cao, Guozhong; Liu, Jun

    2013-11-01

    One-dimensional (1D) semiconducting oxides have attracted great attention for dye sensitized solar cells (DSCs), but the overall performance is still quite limited as compared to TiO2 nanocrystalline DSCs. Here, we report the synthesis of aggregated TiO2 based nanotubes with controlled morphologies and crystalline structures to obtain an overall power conversion efficiency of 9.9% using conventional dye without any additional chemical treatment steps. The high efficiency is attributed to the unique aggregate structure for light harvesting, optimized high surface area, and good crystallinity of the nanotube aggregates obtained through proper thermal annealing. This study demonstrates that high efficiency DSCs can be obtained with 1D nanomaterials, and provides lessons on the importance of optimizing both the nanocrystalline structure and the overall microscale morphology.

  11. The Charmonium Potential at Non-Zero Temperature

    E-Print Network [OSTI]

    Chris Allton; Wynne Evans; Pietro Giudice; Jon-Ivar Skullerud

    2015-05-25

    The potential between charm and anti-charm quarks is calculated non-perturbatively using physical, rather than static quarks at temperatures on both sides of the deconfinement transition $T_{\\rm C}$, using a lattice simulation with 2+1 dynamical quark flavours. We used the HAL QCD time-dependent method, originally developed for inter-nucleon potentials. Our lattices are anisotropic, with temporal lattice spacing less than the spatial one which enhances the information content of our correlators at each temperature. Local-extended charmonium correlators were calculated efficiently by contracting propagators in momentum rather than coordinate space. We find no significant variation in the central potential for temperatures in the confined phase. As the temperature increases into the deconfinement phase, the potential flattens, consistent with the expected weakening interaction. We fit the potential to both the (a) Cornell and (b) Debye-screened potential forms, with the latter better reproducing the data. The zero temperature string tension obtained from (a) agrees with results obtained elsewhere, and it decreases with temperature, but at a slower rate than from the static quark approximation. The Debye mass from (b) is close to zero for small temperatures, but starts to increase rapidly around $T_{\\rm C}$. The spin-dependent potential is found to have a repulsive core and a distinct temperature dependence above $T_{\\rm C}$ at distances $\\sim 1$ fm.

  12. Sensitivity of Battery Electric Vehicle Economics to Drive Patterns, Vehicle Range, and Charge Strategies

    SciTech Connect (OSTI)

    Neubauer, J.; Brooker, A.; Wood, E.

    2012-07-01

    Battery electric vehicles (BEVs) offer the potential to reduce both oil imports and greenhouse gas emissions, but high upfront costs discourage many potential purchasers. Making an economic comparison with conventional alternatives is complicated in part by strong sensitivity to drive patterns, vehicle range, and charge strategies that affect vehicle utilization and battery wear. Identifying justifiable battery replacement schedules and sufficiently accounting for the limited range of a BEV add further complexity to the issue. The National Renewable Energy Laboratory developed the Battery Ownership Model to address these and related questions. The Battery Ownership Model is applied here to examine the sensitivity of BEV economics to drive patterns, vehicle range, and charge strategies when a high-fidelity battery degradation model, financially justified battery replacement schedules, and two different means of accounting for a BEV's unachievable vehicle miles traveled (VMT) are employed. We find that the value of unachievable VMT with a BEV has a strong impact on the cost-optimal range, charge strategy, and battery replacement schedule; that the overall cost competitiveness of a BEV is highly sensitive to vehicle-specific drive patterns; and that common cross-sectional drive patterns do not provide consistent representation of the relative cost of a BEV.

  13. Bioturbating animals control the mobility of redox-sensitive trace elements in organic-rich mudstone

    SciTech Connect (OSTI)

    Harazim, Dario; McIlroy, Duncan; Edwards, Nicholas P.; Wogelius, Roy A.; Manning, Phillip L.; Poduska, Kristin M.; Layne, Graham D.; Sokaras, Dimosthenis; Alonso-Mori, Roberto; Bergmann, Uwe

    2015-10-07

    Bioturbating animals modify the original mineralogy, porosity, organic content, and fabric of mud, thus affecting the burial diagenetic pathways of potential hydrocarbon source, seal, and reservoir rocks. High-sensitivity, synchrotron rapid scanning X-ray fluorescence elemental mapping reveals that producers of phycosiphoniform burrows systematically partition redox-sensitive trace elements (i.e., Fe, V, Cr, Mn, Co, Ni, Cu, and As) in fine-grained siliciclastic rocks. Systematic differences in organic carbon content (total organic carbon >1.5 wt%) and quality (?13Corg~0.6‰) are measured between the burrow core and host sediment. The relative enrichment of redox-sensitive elements in the burrow core does not correlate with significant neo-formation of early diagenetic pyrite (via trace metal pyritization), but is best explained by physical concentration of clay- and silt-sized components. A measured loss (~–15%) of the large-ionic-radius elements Sr and Ba from both burrow halo and core is most likely associated with the release of Sr and Ba to pore waters during biological (in vivo) weathering of silt- to clay-sized lithic components and feldspar. In conclusion, this newly documented effect has significant potential to inform the interpretation of geochemical proxy and rock property data, particularly from shales, where elemental analyses are commonly employed to predict reservoir quality and support paleoenvironmental analysis.

  14. Bioturbating animals control the mobility of redox-sensitive trace elements in organic-rich mudstone

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

    Harazim, Dario; McIlroy, Duncan; Edwards, Nicholas P.; Wogelius, Roy A.; Manning, Phillip L.; Poduska, Kristin M.; Layne, Graham D.; Sokaras, Dimosthenis; Alonso-Mori, Roberto; Bergmann, Uwe

    2015-10-07

    Bioturbating animals modify the original mineralogy, porosity, organic content, and fabric of mud, thus affecting the burial diagenetic pathways of potential hydrocarbon source, seal, and reservoir rocks. High-sensitivity, synchrotron rapid scanning X-ray fluorescence elemental mapping reveals that producers of phycosiphoniform burrows systematically partition redox-sensitive trace elements (i.e., Fe, V, Cr, Mn, Co, Ni, Cu, and As) in fine-grained siliciclastic rocks. Systematic differences in organic carbon content (total organic carbon >1.5 wt%) and quality (?13Corg~0.6‰) are measured between the burrow core and host sediment. The relative enrichment of redox-sensitive elements in the burrow core does not correlate with significant neo-formation ofmore »early diagenetic pyrite (via trace metal pyritization), but is best explained by physical concentration of clay- and silt-sized components. A measured loss (~–15%) of the large-ionic-radius elements Sr and Ba from both burrow halo and core is most likely associated with the release of Sr and Ba to pore waters during biological (in vivo) weathering of silt- to clay-sized lithic components and feldspar. In conclusion, this newly documented effect has significant potential to inform the interpretation of geochemical proxy and rock property data, particularly from shales, where elemental analyses are commonly employed to predict reservoir quality and support paleoenvironmental analysis.« less

  15. Obtaining phonetic transcriptions: a comparison between expert listeners and a continuous speech recognizer. 

    E-Print Network [OSTI]

    Wester, Mirjam; Kessens, Judith M; Cucchiarini, Catia; Strik, Helmer

    2001-01-01

    In this article, we address the issue of using a continuous speech recognition tool to obtain phonetic or phonological representations of speech. Two experiments were carried out in which the performance of a continuous ...

  16. Supporting Information All analytical expressions were obtained starting from Equation 3, the tQSSA approximation

    E-Print Network [OSTI]

    Mirny, Leonid

    information. All numerical analysis was done in Matlab, starting from the full MAK description of the cycle equations for the given inputs using the ODE23s Matlab function. Finally, the data in Figure 6 was obtained

  17. Temperatures and Natural Gamma-Ray Logs Obtained in 1986 from...

    Open Energy Info (EERE)

    and following drilling and possibly to ground shaking associated with present and past seismic activity in the Long Valley region.Natural gamma-ray logs obtained on four...

  18. Investigation of various ways of obtaining output waveforms of CMOS digital circuits by explicit methods 

    E-Print Network [OSTI]

    Ong, Lian Wah

    1989-01-01

    INVESTIGATION OF VARIOUS WAYS OF OBTAINING OUTPUT WAVEFORMS OF CMOS DIGITAL CIRCUITS BY EXPLICIT METHODS A Thesis by LIAN WAH ONG Submitted to the Office of Graduate Studies of Texas Agi. M University in partial fulfillment... of the requirement for the degree of iMASTER OF SCIENCE December 1989 Major Subject: Electrical Engineering INVESTIGATION OF VARIOUS WAYS OF OBTAINING OUTPUT WAVEFORMS OF CMOS DIGITAL CIRCUITS BY EXPLICIT METHODS A Thesis by LIAN-WAH ONG Approved...

  19. Obtaining statistics of cascading line outages spreading in an electric transmission network from standard utility data

    E-Print Network [OSTI]

    Dobson, Ian

    2015-01-01

    We show how to use standard transmission line outage historical data to obtain the network topology in such a way that cascades of line outages can be easily located on the network. Then we obtain statistics quantifying how cascading outages typically spread on the network. Processing real outage data is fundamental for understanding cascading and for evaluating the validity of the many different models and simulations that have been proposed for cascading in power networks.

  20. Polymer escape from a confining potential

    E-Print Network [OSTI]

    Harri Mökkönen; Timo Ikonen; Tapio Ala-Nissila; Hannes Jónsson

    2015-03-26

    The rate of escape of polymers from a two-dimensionally confining potential well has been evaluated using self-avoiding as well as ideal chain representations of varying length, up to 80 beads. Long timescale Langevin trajectories were calculated using the path integral hyperdynamics method to evaluate the escape rate. A minimum is found in the rate for self-avoiding polymers of intermediate length while the escape rate decreases monotonically with polymer length for ideal polymers. The increase in the rate for long, self-avoiding polymers is ascribed to crowding in the potential well which reduces the free energy escape barrier. An effective potential curve obtained using the centroid as an independent variable was evaluated by thermodynamic averaging and Kramers rate theory then applied to estimate the escape rate. While the qualitative features are well reproduced by this approach, it significantly overestimates the rate, especially for the longer polymers. The reason for this is illustrated by constructing a two-dimensional effective energy surface using the radius of gyration as well as the centroid as controlled variables. This shows that the description of a transition state dividing surface using only the centroid fails to confine the system to the region corresponding to the free energy barrier and this problem becomes more pronounced the longer the polymer is. A proper definition of a transition state for polymer escape needs to take into account the shape as well as the location of the polymer.

  1. THE LYAPUNOV EXPONENTS FOR SCHRODINGER OPERATORS WITH SLOWLY OSCILLATING POTENTIALS

    E-Print Network [OSTI]

    Makarov, Nikolai

    THE LYAPUNOV EXPONENTS FOR SCHR¨ODINGER OPERATORS WITH SLOWLY OSCILLATING POTENTIALS Barry Simon Abstract. By studying the integrated density of states, we prove the existence of Lyapunov exponents an explicit formula for these Lyapunov exponents. By applying rank one perturbation theory, we also obtain

  2. Quantification of the Potential Energy

    E-Print Network [OSTI]

    Columbia University

    Quantification of the Potential Energy from Residuals (EfR) in the UK Commissioned, by virtue of its biomass content, it can make a valuable contribution towards our renewable energy targets1 waste up to 2020. To determine the potential2 contribution that energy recovery from residual

  3. Scalar field potentials for cosmology

    E-Print Network [OSTI]

    Victor H. Cardenas; Sergio del Campo

    2004-01-05

    We discuss different aspects of modern cosmology through a scalar field potential construction method. We discuss the case of negative potential cosmologies and its relation with oscillatory cosmic evolution, models with a explicit interaction between dark energy and dark matter which address the coincidence problem and also the case of non-zero curvature space.

  4. ERCOT's Weather Sensitive Demand Response Pilot 

    E-Print Network [OSTI]

    Carter, T.

    2013-01-01

    Demand Response Pilot CATEE 12-17-13 ESL-KT-13-12-21 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 Disclaimer The information contained in this report has been obtained from sources which Constellation New... services along with other information about our business is available online at constellation.com. ESL-KT-13-12-21 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 Demand Response in ERCOT CATEE 121313 - Tim Carter...

  5. Effective core potential investigation of Ni, Pd, and Pt and their monohydrides

    SciTech Connect (OSTI)

    Rohlfing, C.M.; Hay, P.J.; Martin, R.L.

    1986-08-01

    The nickel, palladium, and platinum atoms and their monohydrides are investigated using effective core potentials (ECP's) recently introduced by Hay and Wadt (J. Chem. Phys. 82, 270, 299 (1985)). The palladium and platinum ECP's include relativistic effects. Two types of ECP's, which differ in their definition of the core region, are used in conjunction with large valence basis sets including f-italic functions. Electron correlation is incorporated by Mo-dash-barller--Plesset perturbation theory through fourth order. The results demonstrate the success of the ECP approximation: they are similar in quality to those of all-electron studies and at the same time are achieved at a reduced computational cost. Total correlation energies obtained with both types of ECP's are compared, and are found to be very sensitive to details of the basis set. Correlation effects are treated more consistently by the ECP's which include the outermost core orbitals in the valence region. The relative ordering of molecular states is calculated to be /sup 2/..delta..

  6. The earth's absolute gravitation potential function in the prospect 'gravitational potential metering' of geological objects and earthquake centers

    E-Print Network [OSTI]

    Aleksandr Fridrikson; Marina Kasatochkina

    2009-04-08

    The direct problem of the detection of the Earth's absolute gravitation potential maximum value (MGP) was solved. The inverse problem finding of the Earth maximum gravitation (where there is a maximum of gravitation field intensity and a potential function has a 'bending point') with the help of MGP was solved as well. The obtained results show that the revealed Earth maximum gravitation coincides quite strictly with the cseismic D" layer on the border of the inner and outer (liquid) core. The validity of the method of an absolute gravitation potential detection by the equal- potential velocity was proved as 'gravitation potential measurement' or 'Vs-gravity method'. The prospects of this method for detecting of low-power or distant geological objects with abnormal density and the possible earthquakes with low density was shown.

  7. Demand relief and weather sensitivity in large California commercial office buildings

    E-Print Network [OSTI]

    Kinney, Satkartar; Piette, Mary Ann; Gu, Lixing; Haves, Philip

    2001-01-01

    TX Demand Relief and Weather Sensitivity in Large California76SF00098. Demand Relief and Weather Sensitivity in Largeof research has examined the weather sensitivity of energy

  8. High sensitive formaldehyde graphene gas sensor modified by atomic layer deposition zinc oxide films

    SciTech Connect (OSTI)

    Mu, Haichuan; Zhang, Zhiqiang; Wang, Keke; Xie, Haifen, E-mail: hfxie@ecust.edu.cn [Department of Physics, School of Science, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237 (China); Zhao, Xiaojing; Liu, Feng [Department of Physics, Shanghai Normal University, 100 Guilin Road, Shanghai 200234 (China)

    2014-07-21

    Zinc oxide (ZnO) thin films with various thicknesses were fabricated by Atomic Layer Deposition on Chemical Vapor Deposition grown graphene films and their response to formaldehyde has been investigated. It was found that 0.5?nm ZnO films modified graphene sensors showed high response to formaldehyde with the resistance change up to 52% at the concentration of 9 parts-per-million (ppm) at room temperature. Meanwhile, the detection limit could reach 180 parts-per-billion (ppb) and fast response of 36?s was also obtained. The high sensitivity could be attributed to the combining effect from the highly reactive, top mounted ZnO thin films, and high conductive graphene base network. The dependence of ZnO films surface morphology and its sensitivity on the ZnO films thickness was also investigated.

  9. SMALL-SCALE IMPACT SENSITIVITY TESTING ON EDC37

    SciTech Connect (OSTI)

    HSU, P C; HUST, G; MAIENSCHEIN, J L

    2008-04-28

    EDC37 was tested at LLNL to determine its impact sensitivity in the LLNL's drop hammer system. The results showed that impact sensitivities of the samples were between 86 cm and 156 cm, depending on test methods. EDC37 is a plastic bonded explosive consisting of 90% HMX, 1% nitrocellulose and binder. We recently conducted impact sensitivity testing in our drop hammer system and the results are presented in this report.

  10. Predicting the sensitivity of the beryllium/scintillator layer neutron detector using Monte Carlo and experimental response functions

    SciTech Connect (OSTI)

    Styron, J. D., E-mail: jdstyro@sandia.gov; Cooper, G. W.; Carpenter, Ken; Bonura, M. A. [Department of Nuclear Engineering, University of New Mexico, Albuquerque, New Mexico 87131 (United States); Ruiz, C. L.; Hahn, K. D.; Chandler, G. A.; Nelson, A. J.; Torres, J. A.; McWatters, B. R. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)

    2014-11-15

    A methodology for obtaining empirical curves relating absolute measured scintillation light output to beta energy deposited is presented. Output signals were measured from thin plastic scintillator using NIST traceable beta and gamma sources and MCNP5 was used to model the energy deposition from each source. Combining the experimental and calculated results gives the desired empirical relationships. To validate, the sensitivity of a beryllium/scintillator-layer neutron activation detector was predicted and then exposed to a known neutron fluence from a Deuterium-Deuterium fusion plasma (DD). The predicted and the measured sensitivity were in statistical agreement.

  11. Sensitivity and uncertainty analysis of atmospheric ozone photochemistry models. Final report, September 30, 1993--December 31, 1998

    SciTech Connect (OSTI)

    Smith, G.P.

    1999-03-01

    The author has examined the kinetic reliability of ozone model predictions by computing direct first-order sensitivities of model species concentrations to input parameters: S{sub ij} = [dC{sub i}/C{sub i}]/[dk{sub j}/k{sub j}], where C{sub i} is the abundance of species i (e.g., ozone) and k{sub j} is the rate constant of step j (reaction, photolysis, or transport), for localized boxes from the LLNL 2-D diurnally averaged atmospheric model. An ozone sensitivity survey of boxes at altitudes of 10--55 km, 2--62N latitude, for spring, equinox, and winter is presented. Ozone sensitivities are used to evaluate the response of model predictions of ozone to input rate coefficient changes, to propagate laboratory rate uncertainties through the model, and to select processes and regions suited to more precise measurements. By including the local chemical feedbacks, the sensitivities quantify the important roles of oxygen and ozone photolysis, transport from the tropics, and the relation of key catalytic steps and cycles in regulating stratospheric ozone as a function of altitude, latitude, and season. A sensitivity-uncertainty analysis uses the sensitivity coefficients to propagate laboratory error bars in input photochemical parameters and estimate the net model uncertainties of predicted ozone in isolated boxes; it was applied to potential problems in the upper stratospheric ozone budget, and also highlights superior regions for model validation.

  12. An Investigation of Equivalence Principle Violations Using Solar Neutrino Oscillations in a Constant Gravitational Potential

    E-Print Network [OSTI]

    J. R. Mureika

    1996-12-18

    Neutrino oscillations induced by a flavor-dependent violation of the Einstein Equivalence Principle (VEP) have been recently considered as a suitable explanation of the solar electron-neutrino deficiency. Unlike the MSW oscillation mechanism, the VEP mechanism is dependent on a coupling to the local background gravitational potential $\\Phi$. We investigate the differences which arise by considering three-flavor VEP neutrinos oscillating against fixed background potentials, and against the radially-dependent solar potential. This can help determine the sensitivity of the gravitationally-induced oscillations to both constancy and size (order of magnitude) of $\\Phi$. In particular, we consider the potential of the local superculster, $|\\Phi|=3\\times 10^{-5}$, in light of recent work suggesting that the varying solar potential has no effect on the oscillations. The possibility for arbitrarily large background potentials in different cosmologies is discussed, and the effects of one such potential ($\\Phi = 10^{-3}$) are considered.

  13. TSPA Model Development and Sensitivity Analysis of Processes...

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

    TSPA Model Development and Sensitivity Analysis of Processes Affecting Performance of a Salt Repository for Disposal of Heat-Generating Nuclear Waste TSPA Model Development and...

  14. Security of Foreign Intelligence Information and Sensitive Compartmented Information Facilities

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

    1993-07-23

    The order establishes responsibilities and authorities for protecting Foreign Intelligence Information (FII) and Sensitive Compartmented Information Facilities (SCIFs) within DOE. Supersedes DOE 5639.8.

  15. "Building the Dye-Sensitized Solar Fuel Device" Conference |...

    Office of Science (SC) Website

    "Building the Dye-Sensitized Solar Fuel Device" Conference Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events EFRC News EFRC...

  16. An ultra-sensitive microfluidic immunoassay using living radical...

    Office of Scientific and Technical Information (OSTI)

    microfluidic immunoassay using living radical polymerization and porous polymer monoliths. Citation Details In-Document Search Title: An ultra-sensitive microfluidic...

  17. Completeness for sparse potential scattering

    SciTech Connect (OSTI)

    Shen, Zhongwei

    2014-01-15

    The present paper is devoted to the scattering theory of a class of continuum Schrödinger operators with deterministic sparse potentials. We first establish the limiting absorption principle for both modified free resolvents and modified perturbed resolvents. This actually is a weak form of the classical limiting absorption principle. We then prove the existence and completeness of local wave operators, which, in particular, imply the existence of wave operators. Under additional assumptions on the sparse potential, we prove the completeness of wave operators. In the context of continuum Schrödinger operators with sparse potentials, this paper gives the first proof of the completeness of wave operators.

  18. Linear Sigma Model at Finite Temperature and Baryonic Chemical Potential Using the Midpoint Technique

    E-Print Network [OSTI]

    M. Abu-Shady

    2014-03-13

    A baryonic chemical potential is included in the linear sigma model at finite temperature. The effective mesonic potential is numerically calculated using the midpoint technique. The meson masses are investigated as functions of the temperature at fixed value of baryonic chemical potential. The pressure and energy density are investigated as functions of temperature at fixed value of chemical potential. The obtained results are in good agreement in comparison with other techniques. We conclude that the calculated effective potential successfully predicts the meson properties and thermodynamic properties at finite baryonic chemical potential.

  19. Quantum algorithm for obtaining the energy spectrum of a physical system

    E-Print Network [OSTI]

    Hefeng Wang; S. Ashhab; Franco Nori

    2012-06-21

    We present a polynomial-time quantum algorithm for obtaining the energy spectrum of a physical system, i.e. the differences between the eigenvalues of the system's Hamiltonian, provided that the spectrum of interest contains at most a polynomially increasing number of energy levels. A probe qubit is coupled to a quantum register that represents the system of interest such that the probe exhibits a dynamical response only when it is resonant with a transition in the system. By varying the probe's frequency and the system-probe coupling operator, any desired part of the energy spectrum can be obtained. The algorithm can also be used to deterministically prepare any energy eigenstate. As an example, we have simulated running the algorithm and obtained the energy spectrum of the water molecule.

  20. Quantitative comparison of fuel spray images obtained using ultrafast coherent and incoherent double-pulsed illumination

    E-Print Network [OSTI]

    Purwar, Harsh; Idlahcen, Saïd; Rozé, Claude; Blaisot, Jean-Bernard; Ménard, Thibault

    2015-01-01

    We present a quantitative comparison between the high-pressure fuel spray images obtained experimentally using classical imaging with coherent and incoherent ultrafast illuminations recorded using a compatible CMOS camera. The ultrafast, incoherent illumination source was extracted from the supercontinuum generated by tightly focusing the femtosecond laser pulses in water. The average velocity maps computed using time-correlated image-pairs and spray edge complexity computed using the average curvature scale space maps are compared for the spray images obtained with the two illumination techniques and also for the numerically simulated spray using the coupled volume of fluid and level set method for interface tracking (direct numerical simulation or DNS). The spray images obtained with supercontinuum-derived, incoherent, ultrafast illumination are clearer, since the artifacts arising due to laser speckles and multiple diffraction effects are largely reduced and show a better correlation with the DNS results.

  1. Process For Cutting Polymers Electrolyte Multi-Layer Batteries And Batteries Obtained Thereby

    DOE Patents [OSTI]

    Gauthier, Michel (La Prairie, CA); Lessard, Ginette (Longueuil, CA); Dussault, Gaston (St-Benoit-de-Mirabel, CA); Rouillard, Roger (Beloeil, CA); Simoneau, Martin (Montreal, CA); Miller, Alan Paul (Woodbury, MN)

    2003-09-09

    A stacking of battery laminate is prepared, each battery consisting of anode, polymer electrolyte, cathode films and possibly an insulating film, under conditions suitable to constitute a rigid monoblock assembly, in which the films are unitary with one another. The assembly obtained is thereafter cut in predetermined shape by using a mechanical device without macroscopic deformation of the films constituting the assembly and without inducing permanent short circuits. The battery which is obtained after cutting includes at least one end which appears as a uniform cut, the various films constituting the assembly having undergone no macroscopic deformation, the edges of the films of the anode including an electronically insulating passivation film.

  2. Sensitive Multi-Species Emissions Monitoring: Infrared Laser-Based Detection of Trace-Level Contaminants.

    SciTech Connect (OSTI)

    Steill, Jeffrey D

    2015-01-01

    This report summarizes our development of spectroscopic chemical analysis techniques and spectral modeling for trace-gas measurements of highly-regulated low-concentration species present in flue gas emissions from utility coal boilers such as HCl under conditions of high humidity. Detailed spectral modeling of the spectroscopy of HCl and other important combustion and atmospheric species such as H 2 O, CO 2 , N 2 O, NO 2 , SO 2 , and CH 4 demonstrates that IR-laser spectroscopy is a sensitive multi-component analysis strategy. Experimental measurements from techniques based on IR laser spectroscopy are presented that demonstrate sub-ppm sensitivity levels to these species. Photoacoustic infrared spectroscopy is used to detect and quantify HCl at ppm levels with extremely high signal-to-noise even under conditions of high relative humidity. Additionally, cavity ring-down IR spectroscopy is used to achieve an extremely high sensitivity to combustion trace gases in this spectral region; ppm level CH 4 is one demonstrated example. The importance of spectral resolution in the sensitivity of a trace-gas measurement is examined by spectral modeling in the mid- and near-IR, and efforts to improve measurement resolution through novel instrument development are described. While previous project reports focused on benefits and complexities of the dual-etalon cavity ring-down infrared spectrometer, here details on steps taken to implement this unique and potentially revolutionary instrument are described. This report also illustrates and critiques the general strategy of IR- laser photodetection of trace gases leading to the conclusion that mid-IR laser spectroscopy techniques provide a promising basis for further instrument development and implementation that will enable cost-effective sensitive detection of multiple key contaminant species simultaneously.

  3. Goal-oriented sensitivity analysis for lattice kinetic Monte Carlo simulations

    SciTech Connect (OSTI)

    Arampatzis, Georgios; Department of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts 01003 ; Katsoulakis, Markos A.

    2014-03-28

    In this paper we propose a new class of coupling methods for the sensitivity analysis of high dimensional stochastic systems and in particular for lattice Kinetic Monte Carlo (KMC). Sensitivity analysis for stochastic systems is typically based on approximating continuous derivatives with respect to model parameters by the mean value of samples from a finite difference scheme. Instead of using independent samples the proposed algorithm reduces the variance of the estimator by developing a strongly correlated-“coupled”- stochastic process for both the perturbed and unperturbed stochastic processes, defined in a common state space. The novelty of our construction is that the new coupled process depends on the targeted observables, e.g., coverage, Hamiltonian, spatial correlations, surface roughness, etc., hence we refer to the proposed method as goal-oriented sensitivity analysis. In particular, the rates of the coupled Continuous Time Markov Chain are obtained as solutions to a goal-oriented optimization problem, depending on the observable of interest, by considering the minimization functional of the corresponding variance. We show that this functional can be used as a diagnostic tool for the design and evaluation of different classes of couplings. Furthermore, the resulting KMC sensitivity algorithm has an easy implementation that is based on the Bortz–Kalos–Lebowitz algorithm's philosophy, where events are divided in classes depending on level sets of the observable of interest. Finally, we demonstrate in several examples including adsorption, desorption, and diffusion Kinetic Monte Carlo that for the same confidence interval and observable, the proposed goal-oriented algorithm can be two orders of magnitude faster than existing coupling algorithms for spatial KMC such as the Common Random Number approach. We also provide a complete implementation of the proposed sensitivity analysis algorithms, including various spatial KMC examples, in a supplementary MATLAB source code.

  4. Hertz Potentials and Differential Geometry 

    E-Print Network [OSTI]

    Bouas, Jeffrey David

    2011-08-08

    , and I present techniques for introducing gauge terms of arbitrary order. Finally, I give a treatment of one application of Hertz potentials, namely calculating electromagnetic Casimir interactions for a couple of systems....

  5. Groundwater Contamination Potential from Stormwater

    E-Print Network [OSTI]

    Clark, Shirley E.

    1 Groundwater Contamination Potential from Stormwater Infiltration Robert Pitt, University (CSOs). Introduction (cont.) · Scattered information is available addressing groundwater impacts cities · EPA 1983 NURP work on groundwater beneath Fresno and Long Island infiltration basins · NRC 1994

  6. Zombie Apocalypse and GIS Potential

    E-Print Network [OSTI]

    Siegel, Daniel

    2013-01-15

    Zombie Apocalypse and GIS Potential Daniel Siegel Senior in Environmental Studies Minor in GIS KU GIS Day 2012 Playing Movie Director Point of infection (POI): Haworth Hall Zombies • Attracted to population centers • Move Easily... Zombie Apocalypse and GIS Potential Daniel Siegel Senior in Environmental Studies Minor in GIS KU GIS Day 2012 Playing Movie Director Point of infection (POI): Haworth Hall Zombies • Attracted to population centers • Move Easily...

  7. Accepted Manuscript Studying the sensitivity of the pollutants concentrations caused by

    E-Print Network [OSTI]

    Dimov, Ivan

    -based sensitivity analysis, Sobol' bal sensitivity indices, Air pollution modeling, Multidimensional numericalAccepted Manuscript Studying the sensitivity of the pollutants concentrations caused by variations. Georgieva, S. Ivanovska, T. Ostromsky, Z. Zlatev, Studying the sensitivity of the pollutants concentrations

  8. An information-theoretic approach for obtaining property PDFs from macro specifications of microstructural variability

    E-Print Network [OSTI]

    Zabaras, Nicholas J.

    statistics of their homogenized plastic properties. This procedure is summarized in Fig. 1 for the case of estimating plastic properties of two-dimensional Al microstructures using grain size and orientation microstructures are interrogated using [1] and the bounds of plastic properties are obtained. The principle

  9. Administrative Procedures for Obtaining Unescorted Access to Radioactive Materials of Concern

    E-Print Network [OSTI]

    Jia, Songtao

    -related need". These mandates include fingerprint submission and a Federal Bureau of Investigation ("FBI to the FBI. The information received back from the FBI will be reviewed and confidentially considered that individual obtained from the FBI for the purpose of assuring correct and complete information. Columbia

  10. Interfacial and colloidal behavior of asphaltenes obtained from Brazilian crude oils

    E-Print Network [OSTI]

    Loh, Watson

    Interfacial and colloidal behavior of asphaltenes obtained from Brazilian crude oils Anto and crude oils and discuss the implications of these data on the aggregation, adsorption on solid surfaces Brazilian crude oils. Surface tension measurements in solutions formed by any of these two types

  11. Campus Building Location of centrally owned lockers Contact to obtain a centrally

    E-Print Network [OSTI]

    Qu, Rong

    Campus Building Location of centrally owned lockers Contact to obtain a centrally owned locker Number of centrally owned lockers Notes Jubilee Institute of Mental Health Shower room (A11) Building Taylor (Facilities Manager) 6 Drying cabinet next to lockers King's Meadow Main Building Locker rooms

  12. ENERGY SPECTRUM OF PRIMARY COSMIC RAYS ABOVE 1017 OBTAINED USING AKENO 20 KM2

    E-Print Network [OSTI]

    OG 6.3-3 ENERGY SPECTRUM OF PRIMARY COSMIC RAYS ABOVE 1017 EV OBTAINED USING AKENO 20 KM2 ARRAY M, Tokyo Institute of Technology, Tokyo 152, Japan . Institute of High Energy Physics, Academia Sinica these showers, 60 of them are initiated by primaries with energies larger than 1019 eV. The energy spectrum

  13. An offer you cannot refuse: obtaining efficiency and fairness in preplay

    E-Print Network [OSTI]

    Goranko, Valentin

    An offer you cannot refuse: obtaining efficiency and fairness in preplay negotiation games with conditional offers Valentin Goranko1 and Paolo Turrini2 1 Technical University of Denmark and University can make binding offers for payments of utility to the other players after the play of the game

  14. Taming Wild Behavior: The Input Observer for Obtaining Text Entry and Mouse Pointing Measures from

    E-Print Network [OSTI]

    Wobbrock, Jacob O.

    Taming Wild Behavior: The Input Observer for Obtaining Text Entry and Mouse Pointing Measures from that can run quietly in the background of users' computers and measure their text entry and mouse pointing to segment text entry and mouse pointing input streams into "trials." We are the first to measure errors

  15. PROPERTIES OF RELATIVELY-DILUTEPLASMAS IN PULSED-POWER SYSTEMS OBTAINED FROM HIGH-ACCURACY LASER

    E-Print Network [OSTI]

    PROPERTIES OF RELATIVELY-DILUTEPLASMAS IN PULSED-POWER SYSTEMS OBTAINED FROM HIGH-ACCURACY LASER plasmas under high-power pulses at the nanosecond time scale. The method is based on resonant laser application of laser-spectroscopy to investigate the electric fields and the properties of relatively dilute

  16. Benzene Increases Aneuploidy in the Lymphocytes of Exposed Workers: A Comparison of Data Obtained by

    E-Print Network [OSTI]

    California at Berkeley, University of

    Benzene Increases Aneuploidy in the Lymphocytes of Exposed Workers: A Comparison of Data Obtained Benzene is an established human leukemogen that increases the level of chromosome aberrations in lym and 8 in healthy benzene-exposed human subjects. Metaphase and interphase cells from the peripheral

  17. Sensitivity of Rooftop PV Projections in the SunShot Vision Study to Market Assumptions

    SciTech Connect (OSTI)

    Drury, E.; Denholm, P.; Margolis, R.

    2013-01-01

    The SunShot Vision Study explored the potential growth of solar markets if solar prices decreased by about 75% from 2010 to 2020. The SolarDS model was used to simulate rooftop PV demand for this study, based on several PV market assumptions--future electricity rates, customer access to financing, and others--in addition to the SunShot PV price projections. This paper finds that modeled PV demand is highly sensitive to several non-price market assumptions, particularly PV financing parameters.

  18. Piezoelectrically tunable resonance frequency beam utilizing a stress-sensitive film

    DOE Patents [OSTI]

    Thundat, Thomas G. (Knoxville, TN); Wachter, Eric A. (Oak Ridge, TN)

    2002-01-01

    Methods and apparatus for detecting particular frequencies of acoustic vibration utilize a piezoelectrically-tunable beam element having a piezoelectric layer and a stress sensitive layer and means for providing an electrical potential across the piezoelectric layer to controllably change the beam's stiffness and thereby change its resonance frequency. It is then determined from the response of the piezoelectrically-tunable beam element to the acoustical vibration to which the beam element is exposed whether or not a particular frequency or frequencies of acoustic vibration are detected.

  19. Neutrino Oscillation Physics Potential of the T2K Experiment

    E-Print Network [OSTI]

    K. Abe; J. Adam; H. Aihara; T. Akiri; C. Andreopoulos; S. Aoki; A. Ariga; S. Assylbekov; D. Autiero; M. Barbi; G. J. Barker; G. Barr; P. Bartet-Friburg; M. Bass; M. Batkiewicz; F. Bay; V. Berardi; B. E. Berger; S. Berkman; S. Bhadra; F. d. M. Blaszczyk; A. Blondel; C. Bojechko; S. Bordoni; S. B. Boyd; D. Brailsford; A. Bravar; C. Bronner; N. Buchanan; R. G. Calland; J. Caravaca Rodr'iguez; S. L. Cartwright; R. Castillo; M. G. Catanesi; A. Cervera; D. Cherdack; G. Christodoulou; A. Clifton; J. Coleman; S. J. Coleman; G. Collazuol; K. Connolly; L. Cremonesi; A. Dabrowska; I. Danko; R. Das; S. Davis; P. de Perio; G. De Rosa; T. Dealtry; S. R. Dennis; C. Densham; D. Dewhurst; F. Di Lodovico; S. Di Luise; O. Drapier; T. Duboyski; K. Duffy; J. Dumarchez; S. Dytman; M. Dziewiecki; S. Emery-Schrenk; A. Ereditato; L. Escudero; T. Feusels; A. J. Finch; G. A. Fiorentini; M. Friend; Y. Fujii; Y. Fukuda; A. P. Furmanski; V. Galymov; A. Garcia; S. Giffin; C. Giganti; K. Gilje; D. Goeldi; T. Golan; M. Gonin; N. Grant; D. Gudin; D. R. Hadley; L. Haegel; A. Haesler; M. D. Haigh; P. Hamilton; D. Hansen; T. Hara; M. Hartz; T. Hasegawa; N. C. Hastings; T. Hayashino; Y. Hayato; C. Hearty; R. L. Helmer; M. Hierholzer; J. Hignight; A. Hillairet; A. Himmel; T. Hiraki; S. Hirota; J. Holeczek; S. Horikawa; K. Huang; A. K. Ichikawa; K. Ieki; M. Ieva; M. Ikeda; J. Imber; J. Insler; T. J. Irvine; T. Ishida; T. Ishii; E. Iwai; K. Iwamoto; K. Iyogi; A. Izmaylov; A. Jacob; B. Jamieson; R. A. Johnson; S. Johnson; J. H. Jo; P. Jonsson; C. K. Jung; M. Kabirnezhad; A. C. Kaboth; T. Kajita; H. Kakuno; J. Kameda; Y. Kanazawa; D. Karlen; I. Karpikov; T. Katori; E. Kearns; M. Khabibullin; A. Khotjantsev; D. Kielczewska; T. Kikawa; A. Kilinski; J. Kim; S. King; J. Kisiel; P. Kitching; T. Kobayashi; L. Koch; T. Koga; A. Kolaceke; A. Konaka; L. L. Kormos; A. Korzenev; Y. Koshio; W. Kropp; H. Kubo; Y. Kudenko; R. Kurjata; T. Kutter; J. Lagoda; K. Laihem; I. Lamont; E. Larkin; M. Laveder; M. Lawe; M. Lazos; T. Lindner; C. Lister; R. P. Litchfield; A. Longhin; J. P. Lopez; L. Ludovici; L. Magaletti; K. Mahn; M. Malek; S. Manly; A. D. Marino; J. Marteau; J. F. Martin; P. Martins; S. Martynenko; T. Maruyama; V. Matveev; K. Mavrokoridis; E. Mazzucato; M. McCarthy; N. McCauley; K. S. McFarland; C. McGrew; A. Mefodiev; C. Metelko; M. Mezzetto; P. Mijakowski; C. A. Miller; A. Minamino; O. Mineev; A. Missert; M. Miura; S. Moriyama; Th. A. Mueller; A. Murakami; M. Murdoch; S. Murphy; J. Myslik; T. Nakadaira; M. Nakahata; K. G. Nakamura; K. Nakamura; S. Nakayama; T. Nakaya; K. Nakayoshi; C. Nantais; C. Nielsen; M. Nirkko; K. Nishikawa; Y. Nishimura; J. Nowak; H. M. O'Keeffe; R. Ohta; K. Okumura; T. Okusawa; W. Oryszczak; S. M. Oser; T. Ovsyannikova; R. A. Owen; Y. Oyama; V. Palladino; J. L. Palomino; V. Paolone; D. Payne; O. Perevozchikov; J. D. Perkin; Y. Petrov; L. Pickard; E. S. Pinzon Guerra; C. Pistillo; P. Plonski; E. Poplawska; B. Popov; M. Posiadala-Zezula; J. -M. Poutissou; R. Poutissou; P. Przewlocki; B. Quilain; E. Radicioni; P. N. Ratoff; M. Ravonel; M. A. M. Rayner; A. Redij; M. Reeves; E. Reinherz-Aronis; C. Riccio; P. A. Rodrigues; P. Rojas; E. Rondio; S. Roth; A. Rubbia; D. Ruterbories; R. Sacco; K. Sakashita; F. S'anchez; F. Sato; E. Scantamburlo; K. Scholberg; S. Schoppmann; J. Schwehr; M. Scott; Y. Seiya; T. Sekiguchi; H. Sekiya; D. Sgalaberna; R. Shah; F. Shaker; M. Shiozawa; S. Short; Y. Shustrov; P. Sinclair; B. Smith; M. Smy; J. T. Sobczyk; H. Sobel; M. Sorel; L. Southwell; P. Stamoulis; J. Steinmann; B. Still; Y. Suda; A. Suzuki; K. Suzuki; S. Y. Suzuki; Y. Suzuki; R. Tacik; M. Tada; S. Takahashi; A. Takeda; Y. Takeuchi; H. K. Tanaka; H. A. Tanaka; M. M. Tanaka; D. Terhorst; R. Terri; L. F. Thompson; A. Thorley; S. Tobayama; W. Toki; T. Tomura; Y. Totsuka; C. Touramanis; T. Tsukamoto; M. Tzanov; Y. Uchida; A. Vacheret; M. Vagins; G. Vasseur; T. Wachala; A. V. Waldron; K. Wakamatsu; C. W. Walter; D. Wark; W. Warzycha; M. O. Wascko; A. Weber; R. Wendell; R. J. Wilkes; M. J. Wilking; C. Wilkinson; Z. Williamson; J. R. Wilson; R. J. Wilson; T. Wongjirad; Y. Yamada; K. Yamamoto; C. Yanagisawa; T. Yano; S. Yen; N. Yershov; M. Yokoyama; K. Yoshida; T. Yuan; M. Yu; A. Zalewska; J. Zalipska; L. Zambelli; K. Zaremba; M. Ziembicki; E. D. Zimmerman; M. Zito; J. Zmuda

    2015-02-10

    The observation of the recent electron neutrino appearance in a muon neutrino beam and the high-precision measurement of the mixing angle $\\theta_{13}$ have led to a re-evaluation of the physics potential of the T2K long-baseline neutrino oscillation experiment. Sensitivities are explored for CP violation in neutrinos, non-maximal $\\sin^22\\theta_{23}$, the octant of $\\theta_{23}$, and the mass hierarchy, in addition to the measurements of $\\delta_{CP}$, $\\sin^2\\theta_{23}$, and $\\Delta m^2_{32}$, for various combinations of $\

  20. Science Potential of a Deep Ocean Antineutrino Observatory

    E-Print Network [OSTI]

    Steve Dye

    2006-12-15

    This paper presents science potential of a deep ocean antineutrino observatory under development at Hawaii. The observatory design allows for relocation from one site to another. Positioning the observatory some 60 km distant from a nuclear reactor complex enables precision measurement of neutrino mixing parameters, leading to a determination of neutrino mass hierarchy. At a mid-Pacific location the observatory measures the flux and ratio of uranium and thorium decay neutrinos from earth's mantle and performs a sensitive search for a hypothetical natural fission reactor in earth's core. A subsequent deployment at another mid-ocean location would test lateral heterogeneity of uranium and thorium in earth's mantle.

  1. New sensitivity analysis subordinated to a Jean-Claude Fort

    E-Print Network [OSTI]

    Boyer, Edmond

    , Sobol indices Introduction From more than one decade, uncertainty propagation and sensitivity analysisNew sensitivity analysis subordinated to a contrast Jean-Claude Fort , Thierry Klein , Nabil Rachdi May 8, 2013 Abstract In a model of the form Y = h(X1, . . . , Xd) where the goal is to es- timate

  2. Increasing the Sensitivity of Piezoelectric Microphone: Optimizing Support Material

    E-Print Network [OSTI]

    Petta, Jason

    Increasing the Sensitivity of Piezoelectric Microphone: Optimizing Support Material Michelle Alber supports. Analysis: Conclusion: Materials more susceptible to shearing did not allow the PVDF material) Materials: d31 d31 F L A X G= FL AX Material Shear Modulus (GPa) Maximum Sensitivity (mV/Pa) between 1000Hz

  3. Liquidity-Sensitive Automated Market Makers via Homogeneous Risk Measures

    E-Print Network [OSTI]

    stream of research in au- tomated market making is the design of liquidity-sensitive automated marketLiquidity-Sensitive Automated Market Makers via Homogeneous Risk Measures Abraham Othman and Tuomas. Automated market makers are algorithmic agents that pro- vide liquidity in electronic markets. A recent

  4. Cost-Sensitive Learning with Conditional Markov Prithviraj Sen

    E-Print Network [OSTI]

    Daume III, Hal

    Cost-Sensitive Learning with Conditional Markov Networks Prithviraj Sen sen@cs.umd.edu Lise Getoor structured domains, there is an interesting structure in the risk or cost function associated with different misclassifications. There is a rich tra- dition of cost-sensitive learning applied to unstructured (IID) data. Here

  5. The Development of Cortical Sensitivity to Visual Word Forms

    E-Print Network [OSTI]

    Wandell, Brian A.

    The Development of Cortical Sensitivity to Visual Word Forms Michal Ben-Shachar1,2 , Robert F. Dougherty1 , Gayle K. Deutsch1 , and Brian A. Wandell1 Abstract The ability to extract visual word forms longitudinal fMRI study to chart individual changes in cortical sensitivity to written words as reading de

  6. Sensitivity of Optimal Operation of an Activated Sludge Process Model

    E-Print Network [OSTI]

    Skogestad, Sigurd

    Sensitivity of Optimal Operation of an Activated Sludge Process Model Antonio Araujo, Simone sensitivity analysis of optimal operation conducted on an activated sludge process model based on the test.[7] applied a systematic procedure for control structure design of an activated sludge process

  7. The sensitivity of hillslope bedrock erosion to precipitation

    E-Print Network [OSTI]

    Amundson, Ronald

    The sensitivity of hillslope bedrock erosion to precipitation Justine J. Owen,1 * Ronald Amundson,1) through their dependence on soil thickness, and precipitation is an important control on soil formation. Surprisingly though, compilations of hillslope denudation rates suggest little precipitation sensitivity

  8. Inner-shell and double ionization potentials of aminophenol isomers.

    SciTech Connect (OSTI)

    Kryzhevoi, N. V.; Santra, R.; Cederbaum, L. S.

    2011-01-01

    A comprehensive study of single and double core ionization potentials of the aminophenol molecule is reported. The role of relaxation, correlation, relativistic, and basis set effects in these potentials is clarified. Special attention is paid to the isomer dependence of the single and double core ionization potentials. Some of them are also compared with the respective values of the phenol and aniline molecules. It is shown that the core level single ionization potentials of the para-, meta-, and ortho-aminophenol molecules differ only slightly from each other, rendering these structural isomers challenging to distinguish for conventional x-ray photoelectron spectroscopy. In contrast, the energy needed to remove two core electrons from different atoms depends noticeably on the mutual arrangement and even on the relative orientations of the hydroxyl and amine groups. Together with the electrostatic repulsion between the two core holes, relaxation effects accompanying double core ionization play a crucial role here. The pronounced sensitivity of the double ionization potentials, therefore, enables a spectroscopic characterization of the electronic structure of aminophenol isomers by means of x-ray two-photon photoelectron spectroscopy.

  9. Second-order adjoint sensitivity analysis procedure (SO-ASAP) for computing exactly and efficiently first- and second-order sensitivities in large-scale linear systems: I. Computational methodology

    E-Print Network [OSTI]

    Dan G. Cacuci

    2014-11-22

    This work presents the second-order forward and adjoint sensitivity analysis procedures (SO-FSAP and SO-ASAP) for computing exactly and efficiently the second-order functional derivatives of physical (engineering, biological, etc.) system responses to the system's model parameters.The definition of system parameters used in this work includes all computational input data, correlations, initial and/or boundary conditions, etc. For a physical system comprising N parameters and M responses, we note that the SO-FSAP requires a total of 0.5*N**2+1.5*N large-scale computations for obtaining all of the first- and second-order sensitivities, for all M system responses. On the other hand, the SO-ASAP requires a total of 2*N+1 large-scale computations for obtaining all of the first- and second-order sensitivities, for one functional-type system responses. Therefore, the SO-ASAP should be used when M is much larger than N, while the SO-ASAP should be used when N is much larger than M. The original SO-ASAP presented in this work should enable the hitherto very difficult, if not intractable, exact computation of all of the second-order response sensitivities (i.e., functional Gateaux-derivatives) for large-systems involving many parameters, as usually encountered in practice. Very importantly, the implementation of the SO-ASAP requires very little additional effort beyond the construction of the adjoint sensitivity system needed for computing the first-order sensitivities.

  10. Detecting non-relativistic cosmic neutrinos by capture on tritium: phenomenology and physics potential

    E-Print Network [OSTI]

    Andrew J. Long; Cecilia Lunardini; Eray Sabancilar

    2014-11-12

    We study the physics potential of the detection of the Cosmic Neutrino Background via neutrino capture on tritium, taking the proposed PTOLEMY experiment as a case study. With the projected energy resolution of $\\Delta \\sim$ 0.15 eV, the experiment will be sensitive to neutrino masses with degenerate spectrum, $m_1 \\simeq m_2 \\simeq m_3 = m_\

  11. Dual sensitivity mode system for monitoring processes and sensors

    DOE Patents [OSTI]

    Wilks, Alan D. (Mount Prospect, IL); Wegerich, Stephan W. (Glendale Heights, IL); Gross, Kenneth C. (Bolingbrook, IL)

    2000-01-01

    A method and system for analyzing a source of data. The system and method involves initially training a system using a selected data signal, calculating at least two levels of sensitivity using a pattern recognition methodology, activating a first mode of alarm sensitivity to monitor the data source, activating a second mode of alarm sensitivity to monitor the data source and generating a first alarm signal upon the first mode of sensitivity detecting an alarm condition and a second alarm signal upon the second mode of sensitivity detecting an associated alarm condition. The first alarm condition and second alarm condition can be acted upon by an operator and/or analyzed by a specialist or computer program.

  12. HOLMES - The Electron Capture Decay of 163Ho to Measure the Electron Neutrino Mass with sub-eV sensitivity

    E-Print Network [OSTI]

    Alpert, B; Bennett, D; Biasotti, M; Boragno, C; Brofferio, C; Ceriale, V; Corsini, D; De Gerone, M; Dressler, R; Faverzani, M; Ferri, E; Fowler, J; Gatti, F; Giachero, A; Hays-Wehle, J; Heinitz, S; Hilton, G; Koester, U; Lusignoli, M; Maino, M; Mates, J; Nisi, S; Nizzolo, R; Nucciotti, A; Pessina, G; Pizzigoni, G; Puiu, A; Ragazzi, S; Reintsema, C; Gomes, M Ribeiro; Schmidt, D; Schumann, D; Sisti, M; Swetz, D; Terranova, F; Ullom, J

    2014-01-01

    The European Research Council has recently funded HOLMES, a new experiment to directly measure the neutrino mass. HOLMES will perform a calorimetric measurement of the energy released in the decay of 163Ho. The calorimetric measurement eliminates systematic uncertainties arising from the use of external beta sources, as in experiments with beta spectrometers. This measurement was proposed in 1982 by A. De Rujula and M. Lusignoli, but only recently the detector technological progress allowed to design a sensitive experiment. HOLMES will deploy a large array of low temperature microcalorimeters with implanted 163Ho nuclei. The resulting mass sensitivity will be as low as 0.4 eV. HOLMES will be an important step forward in the direct neutrino mass measurement with a calorimetric approach as an alternative to spectrometry. It will also establish the potential of this approach to extend the sensitivity down to 0.1 eV. We outline here the project with its technical challenges and perspectives.

  13. Side-payment profitability and interacting eyeball ISPs under convex demand-response modeling congestion-sensitive applications

    E-Print Network [OSTI]

    Kesidis, George

    2011-01-01

    This paper is concerned with the issue of side payments between content providers (CPs) and Internet service (access bandwidth) providers (ISPs) in an Internet that is potentially not neutral. We herein generalize past results modeling the ISP and CP interaction as a noncooperative game in two directions. We consider different demand response models (price sensitivities) for different provider types in order to explore when side payments are profitable to the ISP. Also, we consider convex (non-linear) demand response to model demand triggered by traffic which is sensitive to access bandwidth congestion, particularly delay-sensitive interactive real-time applications. Finally, we consider a model with two competing "eyeball" ISPs with transit pricing of net traffic at their peering point to study the effects of caching remote content.

  14. HOLMES - The Electron Capture Decay of 163Ho to Measure the Electron Neutrino Mass with sub-eV sensitivity

    E-Print Network [OSTI]

    B. Alpert; M. Balata; D. Bennett; M. Biasotti; C. Boragno; C. Brofferio; V. Ceriale; D. Corsini; P. K. Day; M. De Gerone; R. Dressler; M. Faverzani; E. Ferri; J. Fowler; F. Gatti; A. Giachero; J. Hays-Wehle; S. Heinitz; G. Hilton; U. Koester; M. Lusignoli; M. Maino; J. Mates; S. Nisi; R. Nizzolo; A. Nucciotti; G. Pessina; G. Pizzigoni; A. Puiu; S. Ragazzi; C. Reintsema; M. Ribeiro Gomes; D. Schmidt; D. Schumann; M. Sisti; D. Swetz; F. Terranova; J. Ullom

    2015-03-17

    The European Research Council has recently funded HOLMES, a new experiment to directly measure the neutrino mass. HOLMES will perform a calorimetric measurement of the energy released in the decay of 163Ho. The calorimetric measurement eliminates systematic uncertainties arising from the use of external beta sources, as in experiments with beta spectrometers. This measurement was proposed in 1982 by A. De Rujula and M. Lusignoli, but only recently the detector technological progress allowed to design a sensitive experiment. HOLMES will deploy a large array of low temperature microcalorimeters with implanted 163Ho nuclei. The resulting mass sensitivity will be as low as 0.4 eV. HOLMES will be an important step forward in the direct neutrino mass measurement with a calorimetric approach as an alternative to spectrometry. It will also establish the potential of this approach to extend the sensitivity down to 0.1 eV. We outline here the project with its technical challenges and perspectives.

  15. Solutions of the Schrödinger equation with inversely quadratic effective plus Mie-type potential using Nikiforov-Uvarov method

    SciTech Connect (OSTI)

    Ita, B. I.; Anake, T. A.

    2014-11-12

    The Schrödinger equation with the interaction of inversely quadratic effective and Mie-type potential has been solved for any angular momentum quantum number l using the Nikiforov-Uvarov method. The bound state energy eigenvalues and the corresponding un-normalized eigenfunctions are obtained in terms of the Laguerre polynomials. Several cases of the potential are also considered and their eigen values obtained.

  16. Chemical Potential Dependence of Chiral Quark Condensate in Dyson-Schwinger Equation Approach of QCD

    E-Print Network [OSTI]

    Lei Chang; Huan Chen; Bin Wang; Wei Yuan; Yu-xin Liu

    2006-11-06

    We propose a chemical potential dependent effective gluon propagator and study the chiral quark condensate in strongly interacting matter in the framework of Dyson-Schwinger equation approach. The obtained results manifest that, as the effect of the chemical potential on the effective gluon propagator is taken into account, the chiral quark condensate decreases gradually with the increasing of the chemical potential if it is less than the critical value, and the condensate vanishes suddenly at the critical chemical potential. The inclusion of the chemical potential in the effective gluon propagator enhances the decreasing rate and decreases the critical chemical potential. It indicates that the chiral symmetry can be restored completely at a critical chemical potential and restored partially as the chemical potential is less than the critical value. If the effective gluon propagator is independent of the chemical potential, the chiral symmetry can only be restored suddenly but no gradual restoration.

  17. Exponential Type Complex and non-Hermitian Potentials within Quantum Hamilton-Jacobi Formalism

    E-Print Network [OSTI]

    Ozlem Yesiltas; Ramazan Sever

    2007-01-22

    PT-/non-PT-symmetric and non-Hermitian deformed Morse and Poschl-Teller potentials are studied first time by quantum Hamilton-Jacobi approach. Energy eigenvalues and eigenfunctions are obtained by solving quantum Hamilton-Jacobi equation.

  18. Gas Saturation and Sensitivity Analysis Using CRiSP 1 Gas Saturation and Sensitivity Analysis Using CRiSP

    E-Print Network [OSTI]

    Washington at Seattle, University of

    Gas Saturation and Sensitivity Analysis Using CRiSP 1 Gas Saturation and Sensitivity Analysis Using of Engineers began the Gas Abatement Study in order to address the problem of gas and its effects on the Snake and Columbia Rivers. One important question is how much gas reductions caused by structural changes at a few

  19. Introduction of a methoxymethyl side chain into p-phenylenediamine attenuates its sensitizing potency and reduces the risk of allergy induction

    SciTech Connect (OSTI)

    Goebel, Carsten; Troutman, John; Hennen, Jenny; Rothe, Helga; Schlatter, Harald; Gerberick, G. Frank; Blömeke, Brunhilde

    2014-02-01

    The strong sensitizing potencies of the most important primary intermediates of oxidative hair dyes, p-phenylenediamine (PPD) and p-toluylenediamine (PTD, i.e. 2-methyl-PPD) are well established. They are considered as the key sensitizers in hair dye allergic contact dermatitis. While modification of their molecular structure is expected to alter their sensitizing properties, it may also impair their color performance. With introduction of a methoxymethyl side chain we found the primary intermediate 2-methoxymethyl-p-phenylenediamine (ME-PPD) with excellent hair coloring performance but significantly reduced sensitizing properties compared to PPD and PTD: In vitro, ME-PPD showed an attenuated innate immune response when analyzed for its protein reactivity and dendritic cell activation potential. In vivo, the effective concentration of ME-PPD necessary to induce an immune response 3-fold above vehicle control (EC3 value) in the local lymph node assay (LLNA) was 4.3%, indicating a moderate skin sensitizing potency compared to values of 0.1 and 0.17% for PPD and PTD, respectively. Finally, assessing the skin sensitizing potency of ME-PPD under consumer hair dye usage conditions through a quantitative risk assessment (QRA) indicated an allergy induction risk negligible compared to PPD or PTD. - Highlights: • Methoxymethyl side chain in p-phenylenediamine reduces its strong skin sensitizing properties. • Reduced protein reactivity and dendritic cell activation. • Reduced skin sensitizing potency in local lymph node assay (LLNA). • Negligible allergy induction risk under hair dye usage conditions.

  20. A simplified method for obtaining high-purity perchlorate from groundwater for isotope analyses.

    SciTech Connect (OSTI)

    vonKiparski, G; Hillegonds, D

    2011-04-04

    Investigations into the occurrence and origin of perchlorate (ClO{sub 4}{sup -}) found in groundwater from across North America have been sparse until recent years, and there is mounting evidence that natural formation mechanisms are important. New opportunities for identifying groundwater perchlorate and its origin have arisen with the utilization of improved detection methods and sampling techniques. Additionally, application of the forensic potential of isotopic measurements has begun to elucidate sources, potential formation mechanisms and natural attenuation processes. Procedures developed appear to be amenable to enable high precision stable isotopic analyses, as well as lower precision AMS analyses of {sup 36}Cl. Immediate work is in analyzing perchlorate isotope standards and developing full analytical accuracy and uncertainty expectations. Field samples have also been collected, and will be analyzed when final qa/qc samples are deemed acceptable.

  1. Experimentally Attainable Optimal Pulse Shapes Obtained with the Aid of Genetic Algorithms

    E-Print Network [OSTI]

    Ruben D. Guerrero; Carlos A. Arango; Andres Reyes

    2015-05-07

    We propose a methodology to design optimal pulses for achieving quantum optimal control on molecular systems. Our approach constrains pulse shapes to linear combinations of a fixed number of experimentally relevant pulse functions. Quantum optimal control is obtained by maximizing a multi-target fitness function with genetic algorithms. As a first application of the methodology we generated an optimal pulse that successfully maximized the yield on a selected dissociation channel of a diatomic molecule. Our pulse is obtained as a linear combination of linearly chirped pulse functions. Data recorded along the evolution of the genetic algorithm contained important information regarding the interplay between radiative and diabatic processes. We performed a principal component analysis on these data to retrieve the most relevant processes along the optimal path. Our proposed methodology could be useful for performing quantum optimal control on more complex systems by employing a wider variety of pulse shape functions.

  2. Obtaining of SmS based semiconducting material and investigation of its electrical properties

    SciTech Connect (OSTI)

    Kaminskii, V. V., E-mail: Vladimir.Kaminski@mail.ioffe.ru [Russian Academy of Sciences, Ioffe Physicotechnical Institute (Russian Federation); Hirai, Shinji; Kuzuya, Toshihiro [Muroran Institute of Technology (Japan)] [Muroran Institute of Technology (Japan); Solov'ev, S. M.; Stepanov, N. N.; Sharenkova, N. V. [Russian Academy of Sciences, Ioffe Physicotechnical Institute (Russian Federation)] [Russian Academy of Sciences, Ioffe Physicotechnical Institute (Russian Federation)

    2013-10-15

    Semiconductor samarium monosulfide polycrystals obtained by reaction between samarium trihydride (SmH{sub 3}) and its sesquisulfide were studied. The temperature, baric and frequency dependences of the resistivity and structural features of the samples were investigated. It is shown that the value of X-ray coherent scattering region is extremely small for SmS samples, 320 A; critical pressure of semiconductor-metal phase transition is higher than in the samples, obtained by other methods, 0.88 GPa; the temperature dependence of the resistivity has metallic behavior. Hopping mechanism of electron transport was found. All these features are explained by more defective structure of the polycrystalline SmS samples.

  3. Obtaining the Specific Heat of Hadronic Matter from CERN/RHIC Experiments

    E-Print Network [OSTI]

    Aram Mekjian

    2005-03-03

    The specific heat of hot hadronic matter is related to particle production yields from experiments done at CERN/RHIC. The mass fluctuation of excited hadrons plays an important role. Connections of the specific heat, mean hadronic mass excited and its fluctuation with properties of baryon and electric chemical potentials (value, slope and curvature) are also developed. A possible divergence of the specific heat as 1/(To-T)^2 is discussed. Some connections with net charge fluctuations are noted.

  4. Hydrodynamic equations for electrons in graphene obtained from the maximum entropy principle

    SciTech Connect (OSTI)

    Barletti, Luigi

    2014-08-15

    The maximum entropy principle is applied to the formal derivation of isothermal, Euler-like equations for semiclassical fermions (electrons and holes) in graphene. After proving general mathematical properties of the equations so obtained, their asymptotic form corresponding to significant physical regimes is investigated. In particular, the diffusive regime, the Maxwell-Boltzmann regime (high temperature), the collimation regime and the degenerate gas limit (vanishing temperature) are considered.

  5. SPECKLE INTERFEROMETRY AT THE USNO FLAGSTAFF STATION: OBSERVATIONS OBTAINED IN 2008 AND NINE NEW ORBITS

    SciTech Connect (OSTI)

    Hartkopf, William I.; Mason, Brian D. E-mail: bdm@usno.navy.mil

    2011-08-15

    Results are presented for 299 speckle interferometric observations of double stars, obtained in 2008 at the USNO Flagstaff Station using the 1.55 m Kaj Strand Astrometric Reflector. Separations range from 0.''15 to 9.''88, with a median of 2.''22. This observing run concentrated on neglected systems, as well as systems in need of improved orbital elements; new orbital solutions have been determined for nine systems as a result.

  6. Method for making graded I-III-VI.sub.2 semiconductors and solar cell obtained thereby

    DOE Patents [OSTI]

    Devaney, Walter E. (Seattle, WA)

    1987-08-04

    Improved cell photovoltaic conversion efficiencies are obtained by the simultaneous elemental reactive evaporation process of Mickelsen and Chen for making semiconductors by closer control of the evaporation rates and substrate temperature during formation of the near contact, bulk, and near junction regions of a graded I-III-VI.sub.2, thin film, semiconductor, such as CuInSe.sub.2 /(Zn,Cd)S or another I-III-VI.sub.2 /II-VI heterojunction.

  7. Possibility of Gravitational Tempering in Colloidal Epitaxy to Obtain a Perfect Crystal

    E-Print Network [OSTI]

    Mori, Atsushi; Matsuo, Shigeki

    2012-01-01

    We have performed Monte Carlo simulations of hard spheres on a pattern under gravity. We have found that a crystal formed at a moderate gravity strength contains essentially no defects while one formed at a higher strength gravity contains a significant amount of defects. This result suggests the possibility of using gravitational-tempering in a colloidal epitaxy to reduce the number of defects in colloidal crystals. Moreover, we wish to emphasize the possibility to obtain a perfect crystal.

  8. Technique development for polarized pipe-to-soil potential measurements

    SciTech Connect (OSTI)

    Dabkowski, J.

    1989-12-01

    Research project PR-200-513 was undertaken with the overall objective to develop practical techniques for determining the polarized pipe-to-soil potential of a buried pipeline. The importance of this project rests with the fact that pipe-to-soil potential measurements are the most commonly used means of assessing the level of cathodic protection on buried gas transmission pipelines. In the recent past years there has been a considerable amount of effort devoted to developing methods and instruments to correct measured pipe-to-soil potentials for IR drops that may occur from currents (from the cathodic protection system or stray sources) in the soil to obtain the polarized potential. However, many of the methods or instruments available are either time-consuming, cumbersome to use in the field, applicable to only certain types of cathodic protection systems and under particular circumstances, subject to influences from stray current sources or not fully developed as of yet. Thus, there is a need to develop a practical method of determining the polarized pipe potential free of IR drop errors. Hence, the objectives of the research program conducted were: (1) to test and evaluate comparatively existing polarized potential measurement approaches, and (2) to develop new approaches to determining the polarized potential.

  9. Kähler potentials for Planck inflation

    SciTech Connect (OSTI)

    Roest, Diederik; Scalisi, Marco; Zavala, Ivonne E-mail: m.scalisi@rug.nl

    2013-11-01

    We assess which Kähler potentials in supergravity lead to viable single-field inflationary models that are consistent with Planck. We highlight the role of symmetries, such as shift, Heisenberg and supersymmetry, in these constructions. Also the connections to string theory are pointed out. Finally, we discuss a supergravity model for arbitrary inflationary potentials that is suitable for open string inflation and generalise it to the case of closed string inflation. Our model includes the recently discussed supergravity reformulation of the Starobinsky model of inflation as well as an interesting alternative with comparable predictions.

  10. Exotic static 3-body potentials

    E-Print Network [OSTI]

    P. Bicudo; M. Cardoso; O. Oliveira

    2008-11-06

    We study exotic static 3-body potentials, utilizing generalized Wilson Loops in SU(3) lattice QCD. For the quark-antiquark-gluon techniques we address the angles of 0, 45, 60, 90, 120, 135 and 180 degrees, between the quark-gluon and the antiquark-gluon segments. We calculate the form of the static potential and discuss whether, or not, two-body interactions exist between the three different bodies, and study the existence of repulsion between the strings. We also perform a first study of the interactions in the system of three gluon.

  11. Thermal performance sensitivity studies in support of material modeling for extended storage of used nuclear fuel

    SciTech Connect (OSTI)

    Cuta, Judith M.; Suffield, Sarah R.; Fort, James A.; Adkins, Harold E.

    2013-08-15

    The work reported here is an investigation of the sensitivity of component temperatures of a storage system, including fuel cladding temperatures, in response to age-related changes that could degrade the design-basis thermal behavior of the system. Three specific areas of interest were identified for this study. • degradation of the canister backfill gas from pure helium to a mixture of air and helium, resulting from postulated leakage due to stress corrosion cracking (SCC) of canister welds • changes in surface emissivity of system components, resulting from corrosion or other aging mechanisms, which could cause potentially significant changes in temperatures and temperature distributions, due to the effect on thermal radiation exchange between components • changes in fuel and basket temperatures due to changes in fuel assembly position within the basket cells in the canister The purpose of these sensitivity studies is to provide a realistic example of how changes in the physical properties or configuration of the storage system components can affect temperatures and temperature distributions. The magnitudes of these sensitivities can provide guidance for identifying appropriate modeling assumptions for thermal evaluations extending long term storage out beyond 50, 100, 200, and 300 years.

  12. Nitrogen-doped graphene as transparent counter electrode for efficient dye-sensitized solar cells

    SciTech Connect (OSTI)

    Wang, Guiqiang, E-mail: wgqiang123@163.com [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China)] [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China); Fang, Yanyan; Lin, Yuan [Institute of Chemistry, Chinese Academy of Science, Beijing 100080 (China)] [Institute of Chemistry, Chinese Academy of Science, Beijing 100080 (China); Xing, Wei; Zhuo, Shuping [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China)] [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China)

    2012-12-15

    Graphical abstract: Display Omitted Highlights: ? NG sheets are prepared through a hydrothermal reduction of graphite oxide. ? The transparent NG counter electrodes of DSCs are fabricated at room temperature. ? Transparent NG electrode exhibits excellent catalytic activity for the reduction of I{sub 3}{sup ?}. ? The DSC with NG electrode achieves a comparable efficiency to that of the Pt-based cell. ? The efficiency of rear illumination is about 85% that of front illumination. -- Abstract: Nitrogen-doped graphene sheets are prepared through a hydrothermal reduction of graphite oxide in the presence of ammonia and applied to fabricate the transparent counter electrode of dye-sensitized solar cells. The atomic percentage of nitrogen in doped graphene sample is about 2.5%, and the nitrogen bonds display pyridine and pyrrole-like configurations. Cyclic voltammetry studies demonstrate a much higher electrocatalytic activity toward I{sup ?}/I{sub 3}{sup ?} redox reaction for nitrogen-doped graphene, as compared with pristine graphene. The dye-sensitized solar cell with this transparent nitrogen-doped graphene counter electrode shows conversion efficiencies of 6.12% and 5.23% corresponding to front-side and rear-side illumination, respectively. Meanwhile, the cell with a Pt counter electrode shows a conversion efficiency of 6.97% under the same experimental condition. These promising results highlight the potential application of nitrogen-doped graphene in cost-effective, transparent dye-sensitized solar cells.

  13. Low noise charge sensitive preamplifier DC stabilized without a physical resistor

    DOE Patents [OSTI]

    Bertuccio, G.; Rehak, P.; Xi, D.

    1994-09-13

    The invention is a novel charge sensitive preamplifier (CSP) which has no resistor in parallel with the feedback capacitor. No resetting circuit is required to discharge the feedback capacitor. The DC stabilization of the preamplifier is obtained by means of a second feedback loop between the preamplifier output and the common base transistor of the input cascode. The input transistor of the preamplifier is a Junction Field Transistor (JFET) with the gate-source junction forward biased. The detector leakage current flows into this junction. This invention is concerned with a new circuit configuration for a charge sensitive preamplifier and a novel use of the input Field Effect Transistor of the CSP itself. In particular this invention, in addition to eliminating the feedback resistor, eliminates the need for external devices between the detector and the preamplifier, and it eliminates the need for external circuitry to sense the output voltage and reset the CSP. Furthermore, the noise level of the novel CSP is very low, comparable with the performance achieved with other solutions. Experimental tests prove that this configuration for the charge sensitive preamplifier permits an excellent noise performance at temperatures including room temperature. An equivalent noise charge of less than 20 electrons r.m.s. has been measured at room temperature by using a commercial JFET as input device of the preamplifier. 6 figs.

  14. Low noise charge sensitive preamplifier DC stabilized without a physical resistor

    DOE Patents [OSTI]

    Bertuccio, Giuseppe (Brianza, IT); Rehak, Pavel (Patchogue, NY); Xi, Deming (Beijing, CN)

    1994-09-13

    The invention is a novel charge sensitive preamplifier (CSP) which has no resistor in parallel with the feedback capacitor. No resetting circuit is required to discharge the feedback capacitor. The DC stabilization of the preamplifier is obtained by means of a second feedback loop between the preamplifier output and the common base transistor of the input cascode. The input transistor of the preamplifier is a Junction Field Transistor (JFET) with the gate-source junction forward biased. The detector leakage current flows into this junction. This invention is concerned with a new circuit configuration for a charge sensitive preamplifier and a novel use of the input Field Effect Transistor of the CSP itself. In particular this invention, in addition to eliminating the feedback resistor, eliminates the need for external devices between the detector and the preamplifier, and it eliminates the need for external circuitry to sense the output voltage and reset the CSP. Furthermore, the noise level of the novel CSP is very low, comparable with the performance achieved with other solutions. Experimental tests prove that this configuration for the charge sensitive preamplifier permits an excellent noise performance at temperatures including room temperature. An equivalent noise charge of less than 20 electrons r.m.s. has been measured at room temperature by using a commercial JFET as input device of the preamplifier.

  15. Microscopic Calculation of Heavy-Ion Potentials Based on TDHF

    E-Print Network [OSTI]

    A. S. Umar; V. E. Oberacker; J. A. Maruhn; P. -G. Reinhard\\

    2011-06-17

    We discuss the implementation and results of a recently developed microscopic method for calculating ion-ion interaction potentials and fusion cross-sections. The method uses the TDHF evolution to obtain the instantaneous many-body collective state using a density constraint. The ion-ion potential as well as the coordinate dependent mass are calculated from these states. The method fully accounts for the dynamical processes present in the TDHF time-evolution and provides a parameter-free way of calculating fusion cross-sections.

  16. New approach to calculating the potential energy of colliding nuclei

    SciTech Connect (OSTI)

    Kurmanov, R. S., E-mail: kurmanovrs@mail.ru [Omsk State Transport University (Russian Federation); Kosenko, G. I., E-mail: kosenkophys@gmail.com [Omsk Tank Engineering Institute (Russian Federation)

    2014-12-15

    The differential method proposed by the present authors earlier for the reduction of volume integrals in calculating the potential energy of a compound nucleus is generalized to the case of two interacting nuclei. The Coulomb interaction energy is obtained for the cases of a sharp and a diffuse boundary of nuclei, while the nuclear interaction energy is found only for nuclei with a sharp boundary, the finiteness of the nuclear-force range being taken into account. The present method of calculations permits reducing the time it takes to compute the potential energy at least by two orders of magnitude.

  17. Sensitivity analysis of reactivity responses using one-dimensional discrete ordinates and three-dimensional Monte Carlo methods

    SciTech Connect (OSTI)

    Williams, M. L.; Gehin, J. C.; Clarno, K. T. [Oak Ridge National Laboratory, Bldg. 5700, P.O. Box 2008, Oak Ridge, TN 37831-6170 (United States)

    2006-07-01

    The TSUNAMI computational sequences currently in the SCALE 5 code system provide an automated approach to performing sensitivity and uncertainty analysis for eigenvalue responses, using either one-dimensional discrete ordinates or three-dimensional Monte Carlo methods. This capability has recently been expanded to address eigenvalue-difference responses such as reactivity changes. This paper describes the methodology and presents results obtained for an example advanced CANDU reactor design. (authors)

  18. Technical Potential for Solar Photovoltaics

    E-Print Network [OSTI]

    Branoff, Theodore J.

    Technical Potential for Solar Photovoltaics in Illinois May 2013 #12;Authors ...................................................................................................... 1.1 Utility-Scale Solar Photovoltaic Systems in the U.S. ........................... 1.2 Previous ...................................................................................................... 3.1 Optimization Matrix for Large-Scale PV System Applications ......... 3.2 Photovoltaic

  19. POTENTIAL OF CLOUD-BASED

    E-Print Network [OSTI]

    Lee, Jason R.

    .!! Cover!photos!courtesy!of!the!National!Energy!Research!Scientific!Computing!Center!and!Google.! #12;! ! ! The Energy Efficiency Potential of Cloud-Based Software: A U.S. Case Study ! Lawrence Berkeley National Laboratory June, 2013 Research Team Eric!Masanet! Arman!Shehabi! Jiaqi!Liang! Lavanya!Ramakrishnan! Xiao

  20. Three-loop static potential

    E-Print Network [OSTI]

    Alexander V. Smirnov; Vladimir A. Smirnov; Matthias Steinhauser

    2010-04-12

    We compute the three-loop corrections to the potential of two heavy quarks. In particular we consider in this Letter the purely gluonic contribution which provides in combination with the fermion corrections of Ref. \\cite{Smirnov:2008pn} the complete answer at three loops.

  1. A knowledge of the potential

    E-Print Network [OSTI]

    Sali, Andrej

    is as important for understanding protein folding as is the potential surface for the H H2 reaction. estimated to protein folding, in which thousands of atoms take part. The under- standing of a reaction is based of experimental developments and theoretical advances.[1] By contrast, protein folding is so complex that even

  2. Optimization of closed ion source for a high-sensitivity residual gas analyzer

    SciTech Connect (OSTI)

    Han, Cheolsu; Rok Ahn, Jong; Jung Ahn, Sang; Joon Park, Chang, E-mail: cjpark@kriss.re.kr [Korea Research of Institute Standards and Science, Daejeon 305-340 (Korea, Republic of)

    2014-03-15

    A closed ion source (CIS) has been optimized by investigating the effect of electron entrance slit size and the effect of mesh in the slit. A stainless steel mesh was placed on the electron entrance slits for a uniform potential distribution inside the CIS anode. Sensitivity of the closed ion sources having four different slit sizes with and without the mesh was compared using mass spectra of SF{sub 6} gas (97% He gas base) introduced into the CIS anode through a needle valve. For each CIS, isolation of anode potential with a mesh in the slit exhibited a significant sensitivity enhancement, but ion current measured directly behind each CIS showed negligible mesh effect. In order to elucidate the mesh effect, electron trajectories were simulated inside the anode. The computer simulation shows that, with mesh in the slit, more electrons are focused to a central region of the anode. This suggests ions generated in the CIS with mesh should have higher probability of passing through the quadrupole mass filter.

  3. Enhanced sensitivity to dark matter self-annihilations in the Sun using neutrino spectral information

    SciTech Connect (OSTI)

    Rott, C.; Tanaka, T.; Itow, Y. E-mail: ttanaka@stelab.nagoya-u.ac.jp

    2011-09-01

    Self-annihilating dark matter gravitationally captured by the Sun could yield observable neutrino signals at current and next generation neutrino detectors. By exploiting such signals, neutrino detectors can probe the spin-dependent scattering of weakly interacting massive particles (WIMPs) with nucleons in the Sun. We describe a method how to convert constraints on neutrino fluxes to a limit on the WIMP-nucleon scattering cross section. In this method all neutrino flavors can be treated in a very similar way. We study the sensitivity of neutrino telescopes for Solar WIMP signals using vertex contained events and find that this detection channel is of particular importance in the search for low mass WIMPs. We obtain highly competitive sensitivities with all neutrino flavor channels for a Megaton sized detector through the application of basic spectral selection criteria. Best results are obtained with the electron neutrino channel. We discuss associated uncertainties and provide a procedure how to treat them for analyses in a consistent way.

  4. Modeling of autoignition and NO sensitization for the oxidation of IC engine surrogate fuels

    SciTech Connect (OSTI)

    Anderlohr, J.M. |; Bounaceur, R.; Battin-Leclerc, F.; Pires Da Cruz, A.

    2009-02-15

    This paper presents an approach for modeling with one single kinetic mechanism the chemistry of the autoignition and combustion processes inside an internal combustion engine, as well as the chemical kinetics governing the postoxidation of unburned hydrocarbons in engine exhaust gases. Therefore a new kinetic model was developed, valid over a wide range of temperatures including the negative temperature coefficient regime. The model simulates the autoignition and the oxidation of engine surrogate fuels composed of n-heptane, iso-octane, and toluene, which are sensitized by the presence of nitric oxides. The new model was obtained from previously published mechanisms for the oxidation of alkanes and toluene where the coupling reactions describing interactions between hydrocarbons and NO{sub x} were added. The mechanism was validated against a wide range of experimental data obtained in jet-stirred reactors, rapid compression machines, shock tubes, and homogeneous charge compression ignition engines. Flow rate and sensitivity analysis were performed in order to explain the low temperature chemical kinetics, especially the impact of NO{sub x} on hydrocarbon oxidation. (author)

  5. JFIT: a framework to obtain combined experimental results through joint fits

    E-Print Network [OSTI]

    Eli Ben-Haim; René Brun; Bertrand Echenard; Thomas E. Latham

    2015-01-18

    A framework is presented for obtaining combined experimental results through joint fits of datasets from several experiments. The JFIT framework allows such fits to be performed keeping the data separated, in its original format, and using independent fitting environments, thus simplifying the process with respect to data access policies. It is based on a master-server architecture, using the network communication classes from ROOT. The framework provides an optimal way to exploit data from several experiments: it ensures that correlations are correctly taken into account and results in a better determination of nuisance parameters. Its advantages are discussed and illustrated by two examples from the domain of high energy physics.

  6. Results of the 2013 UT modeling benchmark obtained with models implemented in CIVA

    SciTech Connect (OSTI)

    Toullelan, Gwénaël; Raillon, Raphaële; Chatillon, Sylvain; Lonne, Sébastien

    2014-02-18

    The 2013 Ultrasonic Testing (UT) modeling benchmark concerns direct echoes from side drilled holes (SDH), flat bottom holes (FBH) and corner echoes from backwall breaking artificial notches inspected with a matrix phased array probe. This communication presents the results obtained with the models implemented in the CIVA software: the pencilmodel is used to compute the field radiated by the probe, the Kirchhoff approximation is applied to predict the response of FBH and notches and the SOV (Separation Of Variables) model is used for the SDH responses. The comparison between simulated and experimental results are presented and discussed.

  7. Idaho How to Obtain EPA ID Number Webpage | 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:HydrothermallyIFB Agro|How to Obtain EPA ID Number

  8. Parametric Sensitivity and Calibration for Kain-Fritsch Convective Parameterization Scheme in the WRF Model

    SciTech Connect (OSTI)

    Yan, Huiping; Qian, Yun; Lin, Guang; Leung, Lai-Yung R.; Yang, Ben; Fu, Q.

    2014-03-25

    Convective parameterizations used in weather and climate models all display sensitivity to model resolution and variable skill in different climatic regimes. Although parameters in convective schemes can be calibrated using observations to reduce model errors, it is not clear if the optimal parameters calibrated based on regional data can robustly improve model skill across different model resolutions and climatic regimes. In this study, this issue is investigated using a regional modeling framework based on the Weather Research and Forecasting (WRF) model. To quantify the response and sensitivity of model performance to model parameters, we identified five key input parameters and specified their ranges in the Kain-Fritsch (KF) convection scheme in WRF and calibrated them across different spatial resolutions, climatic regimes, and radiation schemes using observed precipitation data. Results show that the optimal values for the five input parameters in the KF scheme are close and model sensitivity and error exhibit similar dependence on the input parameters for all experiments conducted in this study despite differences in the precipitation climatology. We found that the model overall performances in simulating precipitation are more sensitive to the coefficients of downdraft (Pd) and entrainment (Pe) mass flux and starting height of downdraft (Ph). However, we found that rainfall biases, which are probably more related to structural errors, still exist over some regions in the simulation even with the optimal parameters, suggesting further studies are needed to identify the sources of uncertainties and reduce the model biases or structural errors associated with missed or misrepresented physical processes and/or potential problems with the modeling framework.

  9. Rationally extended shape invariant potentials in arbitrary D-dimensions associated with exceptional $X_m$ polynomials

    E-Print Network [OSTI]

    Rajesh Kumar Yadav; Nisha Kumari; Avinash Khare; Bhabani Prasad Mandal

    2014-12-16

    Rationally extended shape invariant potentials in arbitrary D-dimensions are obtained by using point canonical transformation (PCT) method. The bound-state solutions of these exactly solvable potentials can be written in terms of X_m Laguerre or X_m Jacobi exceptional orthogonal polynomials. These potentials are isospectral to their usual counterparts and possess translationally shape invariance property.

  10. The Licensing of Negative Sensitive Items in Jordanian Arabic

    E-Print Network [OSTI]

    Alsarayreh, Atef Atallah

    2012-05-31

    This study investigates the licensing conditions on Negative Sensitive Items (NSIs) in Jordanian Arabic (JA). JA exhibits both types of NSIs that are discussed in the literature: Negative Polarity Items (NPIs) and Negative ...

  11. Modeling of a Foamed Emulsion Bioreactor: II. Model Parametric Sensitivity

    E-Print Network [OSTI]

    Periodicals, Inc. KEYWORDS: VOC control; air pollution control; modeling; biologically activated foam filters are increasingly utilized for air pollution control from stationary sources (Cox and Deshusses in air was examined. Model parametric sensitivity studies showed which parameters affect the removal

  12. Sensitivity Analysis with Building Simulations to Support the Commissioning Process 

    E-Print Network [OSTI]

    Burhenne, S.; Elci, M.; Jacob, D.; Neumann, C.; Herkel, S.

    2010-01-01

    for which the buildings energy consumption is most sensitive to. This information is employed for the optimization of the building operation. Furthermore, the MC simulations are used to quantify the uncertainty of the simulation results given the uncertain...

  13. Enhancing the surface sensitivity of colorimetric resonant optical biosensors

    E-Print Network [OSTI]

    Cunningham, Brian

    Enhancing the surface sensitivity of colorimetric resonant optical biosensors Brian Cunningham Abstract Through alteration of the structure of a colorimetric resonant optical biosensor, the relative biosensor; Proteomics; Micro-replication; Resonant filter; Direct assay 1. Introduction Several optical

  14. Sensitization and IGSCC susceptibility prediction in stainless steel pipe weldments

    SciTech Connect (OSTI)

    Atteridge, D.G.; Simmons, J.W.; Li, Ming ); Bruemmer, S.M. )

    1991-11-01

    An analytical model, based on prediction of chromium depletion, has been developed for predicting thermomechanical effects on austenitic stainless steel intergranular stress corrosion cracking (IGSCC) susceptibility. Model development and validation is based on sensitization development analysis of over 30 Type 316 and 304 stainless steel heats. The data base included analysis of deformation effects on resultant sensitization development. Continuous Cooling sensitization behavior is examined and modelled with and without strain. Gas tungsten are (GTA) girth pipe weldments are also characterized by experimental measurements of heat affected zone (HAZ) temperatures, strains and sensitization during/after each pass; pass by pass thermal histories are also predicted. The model is then used to assess pipe chemistry changes on IGSCC resistance.

  15. Experimental sensitivity analysis and control of thermoacoustic systems

    E-Print Network [OSTI]

    Rigas, Georgios; Jamieson, Nicholas P.; Li, Larry K. B.; Juniper, Matthew P.

    2015-12-16

    In this paper, we report the results of an experimental sensitivity analysis on a thermoacoustic system, an electrically-heated Rijke tube. We measure the change of the linear stability characteristics of the system, quantified as shifts...

  16. An Analytic Study of Climate Sensitivity K. Miyazaki

    E-Print Network [OSTI]

    warming has already exceeded the DAI threshold of 2 C because the cooling due to aerosols masks] the climate sensitivity estimated in the Fourth Assessment Report (AR4) [19] of Intergovernmental Panel

  17. Temperature sensitive surfaces and methods of making same

    DOE Patents [OSTI]

    Liang, Liang [Richland, WA; Rieke, Peter C [Pasco, WA; Alford, Kentin L [Pasco, WA

    2002-09-10

    Poly-n-isopropylacrylamide surface coatings demonstrate the useful property of being able to switch charateristics depending upon temperature. More specifically, these coatings switch from being hydrophilic at low temperature to hydrophobic at high temperature. Research has been conducted for many years to better characterize and control the properties of temperature sensitive coatings. The present invention provides novel temperature sensitive coatings on articles and novel methods of making temperature sensitive coatings that are disposed on the surfaces of various articles. These novel coatings contain the reaction products of n-isopropylacrylamide and are characterized by their properties such as advancing contact angles. Numerous other characteristics such as coating thickness, surface roughness, and hydrophilic-to-hydrophobic transition temperatures are also described. The present invention includes articles having temperature-sensitve coatings with improved properties as well as improved methods for forming temperature sensitive coatings.

  18. Delay-sensitive communication over wireless multihop channels 

    E-Print Network [OSTI]

    Ali, Omar Ahmed

    2009-05-15

    Wireless systems of today face the dual challenge of both supporting large traffic flows and providing reliable quality of service to different delay-sensitive applications. For such applications, it is essential to derive meaningful performance...

  19. Hot climates, high sensitivity R. T. Pierrehumbert1

    E-Print Network [OSTI]

    Sciences, The University of Chicago, Chicago, IL 60637 Climate sensitivity is the Holy Grail of climate of this means that study of past hot climates is worthless in the Grail quest; it means only that the Parsifals

  20. On delay-sensitive communication over wireless systems 

    E-Print Network [OSTI]

    Liu, Lingjia

    2009-05-15

    This dissertation addresses some of the most important issues in delay-sensitive communication over wireless systems and networks. Traditionally, the design of communication networks adopts a layered framework where each layer serves as a “black box...

  1. Appendix 14 CSKT Sensitive Species and Heritage Program Ranks for

    E-Print Network [OSTI]

    lemming Wolverine Gray wolf Fisher Grizzly bear River Otter Lynx Montana Natural Heritage Program Ranks Botrychium lineare Linearleaf Moonwort G1 S1 C Botrychium montanum Mountain Moonwort G3 S3 SENSITIVE

  2. BCN Nanotubes as Highly Sensitive Torsional Electromechanical Transducers

    E-Print Network [OSTI]

    Joselevich, Ernesto

    BCN Nanotubes as Highly Sensitive Torsional Electromechanical Transducers Jonathan Garel, Chong interlayer mechanical coupling, but their high electrical resistance limits their use as electromechanical transducers. Can the outstanding mechanical properties of BNNTs be combined with the electromechanical

  3. Sensitivity Methods Applied to Orbital Pursuit-Evasion 

    E-Print Network [OSTI]

    Hafer, William Thomas

    2014-07-07

    In this work, sensitivity methods are examined as a means to solve and analyze the problem of orbital pursuit-evasion (PE). Orbital PE is a two-sided spacecraft trajectory optimization problem characterized by high ...

  4. High sensitivity optomechanical reference accelerometer over 10 kHz

    E-Print Network [OSTI]

    Felipe Guzman Cervantes; Lee Kumanchik; Jon Pratt; Jacob Taylor

    2014-08-28

    We present an optically-detected mechanical accelerometer that achieves a sensitivity of 100 ng/rtHz over a bandwidth of 10kHz and is traceable. We have incorporated a Fabry-Perot fiber-optic micro-cavity that is currently capable of measuring the test-mass displacement with sensitivities of 200 am/rtHz, and whose length determination enables traceability to the International System of Units (SI). The compact size and high mQ-product achieved combined with the high sensitivity and simplicity of the implemented optical detection scheme highlight our device and this category of accelerometers, outlining a path for high sensitivity reference acceleration measurements and observations in seismology and gravimetry.

  5. Eigenvalue Contributon Estimator for Sensitivity Calculations with TSUNAMI-3D

    SciTech Connect (OSTI)

    Rearden, Bradley T [ORNL; Williams, Mark L [ORNL

    2007-01-01

    Since the release of the Tools for Sensitivity and Uncertainty Analysis Methodology Implementation (TSUNAMI) codes in SCALE [1], the use of sensitivity and uncertainty analysis techniques for criticality safety applications has greatly increased within the user community. In general, sensitivity and uncertainty analysis is transitioning from a technique used only by specialists to a practical tool in routine use. With the desire to use the tool more routinely comes the need to improve the solution methodology to reduce the input and computational burden on the user. This paper reviews the current solution methodology of the Monte Carlo eigenvalue sensitivity analysis sequence TSUNAMI-3D, describes an alternative approach, and presents results from both methodologies.

  6. Sensitive Magnetic Control of Ensemble Nuclear Spin Hyperpolarisation in Diamond

    E-Print Network [OSTI]

    Wang, Hai-Jing; Avalos, Claudia E; Seltzer, Scott J; Budker, Dmitry; Pines, Alexander; Bajaj, Vikram S

    2012-01-01

    Dynamic nuclear polarisation, which transfers the spin polarisation of electrons to nuclei, is routinely applied to enhance the sensitivity of nuclear magnetic resonance; it is also critical in spintronics, particularly when spin hyperpolarisation can be produced and controlled optically or electrically. Here we show the complete polarisation of nuclei located near the optically-polarised nitrogen-vacancy (NV) centre in diamond. When approaching the ground-state level anti-crossing condition of the NV electron spins, 13C nuclei in the first-shell are polarised in a pattern that depends sensitively and sharply upon the magnetic field. Based on the anisotropy of the hyperfine coupling and of the optical polarisation mechanism, we predict and observe a complete reversal of the nuclear spin polarisation with a few-mT change in the magnetic field. The demonstrated sensitive magnetic control of nuclear polarisation at room temperature will be useful for sensitivity-enhanced NMR, nuclear-based spintronics, and quant...

  7. Linear analysis of surface temperature dynamics and climate sensitivity 

    E-Print Network [OSTI]

    Wu, Wei

    2007-04-25

    Spectral properties of global surface temperature and uncertainties of global climate sensitivity are explored in this work through the medium of Energy Balance Climate Models (EBCMs) and observational surface temperature ...

  8. Monitoring Sensitive Bat Species at Los Alamos National Laboratory

    SciTech Connect (OSTI)

    Schoenberg, Kari M. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-01-15

    Bats play a critical role in ecosystems and are vulnerable to disturbance and disruption by human activities. In recent decades, bat populations in the United States and elsewhere have decreased tremendously. There are 47 different species of bat in the United States and 28 of these occur in New Mexico with 15 different species documented at the Los Alamos National Laboratory (LANL) and surrounding areas. Euderma maculatum(the spotted bat) is listed as “threatened” by the state of New Mexico and is known to occur at LANL. Four other species of bats are listed as “sensitive” and also occur here. In 1995, a four year study was initiated at LANL to assess the status of bat species of concern, elucidate distribution and relative abundance, and obtain information on roosting sites. There have been no definitive studies since then. Biologists in the Environmental Protection Division at LANL initiated a multi-year monitoring program for bats in May 2013 to implement the Biological Resources Management Plan. The objective of this ongoing study is to monitor bat species diversity and seasonal activity over time at LANL. Bat species diversity and seasonal activity were measured using an acoustic bat detector, the Pettersson D500X. This ultrasound recording unit is intended for long-term, unattended recording of bat and other high frequency animal calls. During 2013, the detector was deployed at two locations around LANL. Study sites were selected based on proximity to water where bats may be foraging. Recorded bat calls were analyzed using Sonobat, software that can help determine specific species of bat through their calls. A list of bat species at the two sites was developed and compared to lists from previous studies. Species diversity and seasonal activity, measured as the number of call sequences recorded each month, were compared between sites and among months. A total of 17,923 bat calls were recorded representing 15 species. Results indicate that there is a statistically significant relationship between bat diversity and month of the year. Future studies will be implemented based on these findings.

  9. Obtaining accurate amounts of mercury from mercury compounds via electrolytic methods

    DOE Patents [OSTI]

    Grossman, M.W.; George, W.A.

    1987-07-07

    A process is described for obtaining pre-determined, accurate rate amounts of mercury. In one embodiment, predetermined, precise amounts of Hg are separated from HgO and plated onto a cathode wire. The method for doing this involves dissolving a precise amount of HgO which corresponds to a pre-determined amount of Hg desired in an electrolyte solution comprised of glacial acetic acid and H[sub 2]O. The mercuric ions are then electrolytically reduced and plated onto a cathode producing the required pre-determined quantity of Hg. In another embodiment, pre-determined, precise amounts of Hg are obtained from Hg[sub 2]Cl[sub 2]. The method for doing this involves dissolving a precise amount of Hg[sub 2]Cl[sub 2] in an electrolyte solution comprised of concentrated HCl and H[sub 2]O. The mercurous ions in solution are then electrolytically reduced and plated onto a cathode wire producing the required, pre-determined quantity of Hg. 1 fig.

  10. A new method to obtain the broad line region size of high redshift quasars

    SciTech Connect (OSTI)

    Negrete, C. Alenka [Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico); Dultzin, Deborah [Instituto de Astronomía, Universidad Nacional Autónoma de México (Mexico); Marziani, Paola [INAF, Astronomical Observatory of Padova (Italy); Sulentic, Jack W., E-mail: cnegrete@inaoep.mx, E-mail: deborah@astro.unam.mx, E-mail: paola.marziani@oapd.inaf.it, E-mail: sulentic@iaa.es [Instituto de Astrofísica de Andalucía (Spain)

    2014-10-10

    We present high signal-to-noise ratio UV spectra for eight quasars at z ? 3 obtained with Very Large Telescope/FORS. The spectra enable us to analyze in detail the strong and weak emission features in the rest frame range 1300-2000 Å of each source (C III] ?1909, Si III] ?1892, Al III ?1860, Si II ?1814, C IV ?1549 and blended Si IV ?1397+O IV] ?1402). The flux ratios Al III ?1860/Si III] ?1892, C IV ?1549/Al III ?1860, Si IV ?1397+O IV] ?1402/Si III] ?1892 and Si IV ?1397+O IV] ?1402/C IV ?1549 strongly constrain ionizing photon flux and metallicity through the use of diagnostic maps built from CLOUDY simulations. The radius of the broad line region is then derived from the ionizing photon flux applying the definition of the ionization parameter. The r {sub BLR} estimate and the width of a virial component isolated in prominent UV lines yields an estimate of black hole mass. We compare our results with previous estimates obtained from the r {sub BLR}-luminosity correlation customarily employed to estimate the black hole masses of high redshift quasars.

  11. Sensitivity Analysis of the Gap Heat Transfer Model in BISON.

    SciTech Connect (OSTI)

    Swiler, Laura Painton; Schmidt, Rodney C.; Williamson, Richard; Perez, Danielle

    2014-10-01

    This report summarizes the result of a NEAMS project focused on sensitivity analysis of the heat transfer model in the gap between the fuel rod and the cladding used in the BISON fuel performance code of Idaho National Laboratory. Using the gap heat transfer models in BISON, the sensitivity of the modeling parameters and the associated responses is investigated. The study results in a quantitative assessment of the role of various parameters in the analysis of gap heat transfer in nuclear fuel.

  12. Forward and adjoint sensitivity computation of chaotic dynamical systems

    SciTech Connect (OSTI)

    Wang, Qiqi, E-mail: qiqi@mit.edu [Department of Aeronautics and Astronautics, MIT, 77 Mass Ave., Cambridge, MA 02139 (United States)] [Department of Aeronautics and Astronautics, MIT, 77 Mass Ave., Cambridge, MA 02139 (United States)

    2013-02-15

    This paper describes a forward algorithm and an adjoint algorithm for computing sensitivity derivatives in chaotic dynamical systems, such as the Lorenz attractor. The algorithms compute the derivative of long time averaged “statistical” quantities to infinitesimal perturbations of the system parameters. The algorithms are demonstrated on the Lorenz attractor. We show that sensitivity derivatives of statistical quantities can be accurately estimated using a single, short trajectory (over a time interval of 20) on the Lorenz attractor.

  13. The static quark potential for dynamical domain wall fermion simulations

    E-Print Network [OSTI]

    Min Li

    2006-10-18

    We present preliminary results for the static quark potential computed on some of the DWF lattice configurations generated by the RBC-UKQCD collaborations. Most of these results were obtained using Wilson lines joining spatial planes fixed into the Coulomb gauge. We compare the results from this method with the earlier ones on $16^3 \\times 32$ lattices using Bresenham spatial paths with APE smeared link variables. Some preliminary results on $24^3 \\times 64$ lattices are also presented.

  14. Canonical quantum potential scattering theory

    E-Print Network [OSTI]

    M. S. Hussein; W. Li; S. Wuester

    2008-07-13

    A new formulation of potential scattering in quantum mechanics is developed using a close structural analogy between partial waves and the classical dynamics of many non-interacting fields. Using a canonical formalism we find non-linear first-order differential equations for the low energy scattering parameters like scattering length and effective range. They significantly simplify typical calculations, as we illustrate for atom-atom and neutron-nucleus scattering systems. A generalization to charged particle scattering is also possible.

  15. Nanobiocatalysis and Its Potential Applications

    SciTech Connect (OSTI)

    Kim, Jungbae; Grate, Jay W.; Wang, Ping

    2008-11-01

    Nanobiocatalysis with enzymes incorporated into nanostructured materials have emerged as a rapidly growing area. Structures including nanoporous media, nanofibers, carbon nanotubes, and nanoparticles have been found to be efficient in manipulating the nanoscale environment of the enzyme and thus promising exciting advances in many areas of enzyme technology. This review will describe these recent developments in nanobiocatalysis and their potential applications in various fields such as trypsin digestion in proteomic analysis, antifouling, biofuel cells, and biosensors.

  16. Large-scale impact of CO2 storage in deep saline aquifers: A sensitivity study on pressure response in stratified systems

    E-Print Network [OSTI]

    Zhou, Quanlin

    Large-scale impact of CO2 storage in deep saline aquifers: A sensitivity study on pressure response storage potential of all the geological CO2 storage options and are widely distributed throughout the globe in all sedimentary basins.ForCO2 storage tohaveasignificantimpact on atmospheric levels

  17. On Flue-dust and its Composition as Obtained in Roasting Argentiferous Ores

    E-Print Network [OSTI]

    Welin, John Eric

    1904-01-01

    , and of metals and t h e i r compounds that have been v o l a t i l i z e d i n the lower parts of the furnace and not condensed again In i t , but c a r r i e d along with the strong d r a f t Into the f l u e . The v o l a t i l i z e d metals or vapor... that the contact process w i l l i n the near future m o s t l y ^ i f not e n t i r e l y ^ replace the o l d leaden chamber process. The sample of fluedust i n hand was, as stated, above, obtained 10 from the f l u e of the s u l f u r i c acid plant...

  18. Process and apparatus for obtaining samples of liquid and gas from soil

    DOE Patents [OSTI]

    Rossabi, J.; May, C.P.; Pemberton, B.E.; Shinn, J.; Sprague, K.

    1999-03-30

    An apparatus and process for obtaining samples of liquid and gas from subsurface soil is provided having filter zone adjacent an external expander ring. The expander ring creates a void within the soil substrate which encourages the accumulation of soil-borne fluids. The fluids migrate along a pressure gradient through a plurality of filters before entering a first chamber. A one-way valve regulates the flow of fluid into a second chamber in further communication with a collection tube through which samples are collected at the surface. A second one-way valve having a reverse flow provides additional communication between the chambers for the pressurized cleaning and back-flushing of the apparatus. 8 figs.

  19. Quantum correlations in bulk properties of solids obtained from neutron scattering

    E-Print Network [OSTI]

    Ben-Qiong Liu; Lian-Ao Wu; Guo-Mo Zeng; Jian-Ming Song; Wei Luo; Yang Lei; Guang-Ai Sun; Bo Chen; Shu-Ming Peng

    2014-07-02

    We demonstrate that inelastic neutron scattering technique can be used to indirectly detect and measure the macroscopic quantum correlations quantified by both entanglement and discord in a quantum magnetic material, VODPO4 . 1D2O. The amount of quantum correlations is obtained 2 by analyzing the neutron scattering data of magnetic excitations in isolated V4+ spin dimers. Our quantitative analysis shows that the critical temperature of this material can reach as high as Tc = 82.5 K, where quantum entanglement drops to zero. Significantly, quantum discord can even survive at Tc = 300 K and may be used in room temperature quantum devices. Taking into account the spin-orbit (SO) coupling, we also predict theoretically that entanglement can be significantly enhanced and the critical temperature Tc increases with the strength of spin-orbit coupling.

  20. Process and apparatus for obtaining samples of liquid and gas from soil

    DOE Patents [OSTI]

    Rossabi, Joseph (105 Michael Ct., Aiken, SC 29801); May, Christopher P. (5002 Hesperus Dr., Columbia, MD 21044); Pemberton, Bradley E. (131 Glencarin Dr., Aiken, SC 29803); Shinn, Jim (Box 65, RFD. #1, South Royalton, VT 05068); Sprague, Keith (Box 234 Rte. 14, Brookfield, VT 05036)

    1999-01-01

    An apparatus and process for obtaining samples of liquid and gas from subsurface soil is provided having filter zone adjacent an external expander ring. The expander ring creates a void within the soil substrate which encourages the accumulation of soil-borne fluids. The fluids migrate along a pressure gradient through a plurality of filters before entering a first chamber. A one-way valve regulates the flow of fluid into a second chamber in further communication with a collection tube through which samples are collected at the surface. A second one-way valve having a reverse flow provides additional communication between the chambers for the pressurized cleaning and back-flushing of the apparatus.

  1. Characterization of measurement uncertainties using the correlations between local outcomes obtained from maximally entangled pairs

    E-Print Network [OSTI]

    Shota Kino; Taiki Nii; Holger F. Hofmann

    2015-08-13

    Joint measurements of non-commuting observables are characterized by unavoidable measurement uncertainties that can be described in terms of the error statistics for input states with well-defined values for the target observables. However, a complete characterization of measurement errors must include the correlations between the errors of the two observables. Here, we show that these correlations appear in the experimentally observable measurement statistics obtained by performing the joint measurement on maximally entangled pairs. For two-level systems, the results indicate that quantum theory requires imaginary correlations between the measurement errors of X and Y since these correlations are represented by the operator product XY=iZ in the measurement operators. Our analysis thus reveals a directly observable consequence of non-commutativity in the statistics of quantum measurements.

  2. Towards obtaining Green functions for a Casimir cavity in de Sitter spacetime

    E-Print Network [OSTI]

    Giampiero Esposito; George M. Napolitano

    2014-12-02

    Recent work in the literature has studied rigid Casimir cavities in a weak gravitational field, or in de Sitter spacetime, or yet other spacetime models. The present review paper studies the difficult problem of direct evaluation of scalar Green functions for a Casimir-type apparatus in de Sitter spacetime. Working to first order in the small parameter of the problem, i.e. twice the gravity acceleration times the plates' separation divided by the speed of light in vacuum, suitable coordinates are considered for which the differential equations obeyed by the zeroth- and first-order Green functions can be solved in terms of special functions. This result can be used, in turn, to obtain, via the point-split method, the regularized and renormalized energy-momentum tensor both in the scalar case and in the physically more relevant electromagnetic case.

  3. Finite temperature effects on the antikaon optical potential

    E-Print Network [OSTI]

    L. Tolos; A. Polls; A. Ramos

    2001-09-05

    By solving the Bethe-Goldstone equation, we have obtained the $\\bar{K}$ optical potential from the $\\bar{K}N$ effective interaction in nuclear matter at T=0. We have extended the model by incorporating finite temperature effects in order to adapt our calculations to the experimental conditions in heavy-ion collisions. In the rank of densities ($0-2\\rho_0$), the finite temperature $\\bar{K}$ optical potential shows a smooth behaviour if we compare it to the T=0 outcome. Our model has also been applied to the study of the ratio between $K^+$ and $K^-$ produced at GSI with $T$ around 70 MeV. Our results point at the necessity of introducing an attractive $\\bar{K}$ optical potential.

  4. Silane Modification of Glass and Silica Surfaces to Obtain Equally Oil-Wet Surfaces in Glass-Covered Silicon Micromodel Applications

    SciTech Connect (OSTI)

    Grate, Jay W.; Warner, Marvin G.; Pittman, Jonathan W.; Dehoff, Karl J.; Wietsma, Thomas W.; Zhang, Changyong; Oostrom, Martinus

    2013-08-05

    The wettability of silicon and glass surfaces can be modified by silanization. However, similar treatments of glass and silica surfaces using the same silane do not necessarily yield the same wettability as determined by the oil-water contact angle. In this technical note, surface cleaning pretreatments were investigated to determine conditions that would yield oil-wet surfaces on glass with similar wettability to silica surfaces treated with the same silane, and both air-water and oil-water contact angles were determined. Air-water contact angles were less sensitive to differences between silanized silica and glass surfaces, often yielding similar values while the oil-water contact angles were quite different. Borosilicate glass surfaces cleaned with standard cleaning solution 1 (SC1) yield intermediate-wet surfaces when silanized with hexamethyldisilazane, while the same cleaning and silanization yields oil-wet surfaces on silica. However, cleaning glass in boiling concentrated nitric acid creates a surface that can be silanized to obtain oil-wet surfaces using HDMS. Moreover, this method is effective on glass with prior thermal treatment at an elevated temperature of 400oC. In this way, silica and glass can be silanized to obtain equally oil-wet surfaces using HMDS. It is demonstrated that pretreatment and silanization is feasible in silicon-silica/glass micromodels previously assembled by anodic bonding, and that the change in wettability has a significant observable effect on immiscisble fluid displacements in the pore network.

  5. Composition and microstructure of zirconium and hafnium germanates obtained by different chemical routes

    SciTech Connect (OSTI)

    Utkin, A.V. Prokip, V.E.; Baklanova, N.I.

    2014-01-15

    The phase composition and morphology of zirconium and hafnium germanates synthesized by ceramic and co-precipitation routes were studied. The products were characterized using high-temperature X-ray diffraction analysis (XRD), Raman spectroscopy, scanning electron microscopy (SEM) and thermal (TG/DTA) analysis. To investigate the phase composition and stoichiometry of compounds the unit cell parameters were refined by full-profile Rietveld XRD analysis. The morphology of products and its evolution during high-temperature treatment was examined by SEM analysis. It was stated that there is the strong dependence of the phase composition and morphology of products on the preparation route. The ceramic route requires a multi-stage high-temperature treatment to obtain zirconium and hafnium germanates of 95% purity or more. Also, there are strong diffusion limitations to obtain hafnium germanate Hf{sub 3}GeO{sub 8} by ceramic route. On the contrary, the co-precipitation route leads to the formation of nanocrystalline single phase germanates of stoichiometric composition at a relatively low temperatures (less than 1000 °C). The results of quantitative XRD analysis showed the hafnium germanates are stoichiometric compounds in contrast to zirconium germanates that form a set of solid solutions. This distinction may be related to the difference in the ion radii of Zr and Hf. - Graphical abstract: The phase composition and morphology of zirconium and hafnium germanates synthesized by ceramic and co-precipitation routes were studied. It was stated that there is the strong dependence of the phase composition and morphology of products on the preparation route. Display Omitted - Highlights: • Zr and Hf germanates were synthesized by ceramic and co-precipitation routes. • The morphology of products depends on the synthesis parameters. • Zirconium germanates forms a set of solid solutions. • Hafnium germanates are stoichiometric compounds.

  6. Analysis of the Quality of Information Obtained About Uterine Artery Embolization From the Internet

    SciTech Connect (OSTI)

    Tavare, Aniket N.; Alsafi, Ali Hamady, Mohamad S.

    2012-12-15

    Purpose: The Internet is widely used by patients to source health care-related information. We sought to analyse the quality of information available on the Internet about uterine artery embolization (UAE). Materials and Methods: We searched three major search engines for the phrase 'uterine artery embolization' and compiled the top 50 results from each engine. After excluding repeated sites, scientific articles, and links to documents, the remaining 50 sites were assessed using the LIDA instrument, which scores sites across the domains of accessibility, usability, and reliability. The Fleisch reading ease score (FRES) was calculated for each of the sites. Finally, we checked the country of origin and the presence of certification by the Health On the Net Foundation (HONcode) as well as their effect on LIDA and FRES scores.ResultsThe following mean scores were obtained: accessibility 48/60 (80%), usability 42/54 (77%), reliability 20/51 (39%), total LIDA 110/165 (67%), and FRES 42/100 (42%). Nine sites had HONcode certification, and this was associated with significantly greater (p < 0.05) reliability and total LIDA and FRES scores. When comparing sites between United Kingdom and United States, there was marked variation in the quality of results obtained when searching for information on UAE (p < 0.05). Conclusion: In general, sites were well designed and easy to use. However, many scored poorly on the reliability of their information either because they were produced in a non-evidence-based way or because they lacking currency. It is important that patients are guided to reputable, location-specific sources of information online, especially because prominent search engine rank does not guarantee reliability of information.

  7. Phylogenetic Distribution of Potential Cellulases in Bacteria

    E-Print Network [OSTI]

    Berlemont, R.; Martiny, A. C

    2012-01-01

    Phylogenetic Distribution of Potential Cellulases incontent/79/5/1545 Phylogenetic Distribution of Potential3, 4). Thus, the phylogenetic distribution of en- zyme genes

  8. Clot Busting Simulations Test Potential Stroke Treatment

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

    Clot Busting Simulations Test Potential Stroke Treatment Clot Busting Simulations Test Potential Stroke Treatment September 24, 2013 | Tags: Biological and Environmental Research...

  9. Handling and Packaging a Potentially Radiologically Contaminated...

    Office of Environmental Management (EM)

    Handling and Packaging a Potentially Radiologically Contaminated Patient Handling and Packaging a Potentially Radiologically Contaminated Patient The purpose of this procedure is...

  10. Innovative DOE Technology Demonstrates Potential for Significant...

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

    DOE Technology Demonstrates Potential for Significant Increases in Safe and Responsible Production from Depleted U.S. Oil Fields Innovative DOE Technology Demonstrates Potential...

  11. Webinar: Potential Strategies for Integrating Solar Hydrogen...

    Office of Environmental Management (EM)

    Potential Strategies for Integrating Solar Hydrogen Production and Concentrating Solar Power: A Systems Analysis Webinar: Potential Strategies for Integrating Solar Hydrogen...

  12. Thermoelectric Generator (TEG) Fuel Displacement Potential using...

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

    Fuel Displacement Potential using Engine-in-the-Loop and Simulation Thermoelectric Generator (TEG) Fuel Displacement Potential using Engine-in-the-Loop and Simulation Assessment...

  13. Cassava, a potential biofuel crop in China

    E-Print Network [OSTI]

    Jansson, C.

    2010-01-01

    Cassava, a potential biofuel crop in China Christer Janssoncassava; bioethanol; biofuel; metabolic engineering; Chinathe potentials of cassava in the biofuel sector and point to

  14. Scalar potential model of the Pioneer Anomaly

    E-Print Network [OSTI]

    John C. Hodge

    2007-01-20

    The unexplained sunward acceleration $a_\\mathrm{P}$ of the Pioneer 10 (P10) and the Pioneer 11 (P11) spacecraft remains a mystery. A scalar potential model (SPM) that derived from considerations of galaxy clusters, of redshift, and of H{\\scriptsize{I}} rotation curves of spiral galaxies is applied to the Pioneer Anomaly. Matter is posited to warp the scalar potential $\\rho$ field. The changing $\\rho$ field along the light path causes the Pioneer Anomaly. The SPM is consistent with the general value of $a_\\mathrm{P}$; with the annual periodicity; with the differing $a_\\mathrm{P}$ between the spacecraft; with the discrepancy between {\\textit{Sigma}} and CHASMP programs at P10 (I) and their closer agreement at P10 (III); with the slowly declining $a_\\mathrm{P}$; with the low value of $a_\\mathrm{P}$ immediately before the P11's Saturn encounter; with the high uncertainty in the value of $a_\\mathrm{P}$ obtained during and after the P11's Saturn encounter; and with the cosmological connection suggested by $a_\\mathrm{P} \\approx cH_\\mathrm{o}$. The effect of the $\\rho$ field warp appears as the curvature of space proposed by general relativity (GR). The Hubble Law and $a_\\mathrm{P} \\approx cH_\\mathrm{o}$ are manifestations of the Newtonian spherical property. Therefore, gravitational attraction, the equivalence principle, and the planet ephemeris remain as described by GR. GR corresponds to the SPM in the limit in which the Sources and Sinks may be replaced by a flat and static $\\rho$ field such as between cluster cells and on the Solar System scale at a relatively large distance from a Source or Sink.

  15. Contributions of the center vortices and vacuum domain in potentials between static sources

    E-Print Network [OSTI]

    Seyed Mohsen Hosseini Nejad; Sedigheh Deldar

    2015-03-04

    In this paper, we study the role of the domain structure of the Yang Mills vacuum. The Casimir scaling and $N$-ality are investigated in the potentials between static sources in various representations for $SU(2)$ and $SU(3)$ gauge groups based on the domain structure model using square ansatz for angle $\\alpha_{C}(x)$. We also discuss about the contributions of the vacuum domain and center vortices in the static potentials. As a result, the potentials obtained from vacuum domains agree with Casimir scaling better than the ones obtained from center vortices. The reasons of these observations are investigated by studying the behavior of the potentials obtained from vacuum domains and center vortices and the properties of the group factors. Then, the vacuum domains in $SU(N)$ and $G(2)$ gauge groups are compared and we argue that the $G(2)$ vacuum is filled with center vortices of its subgroups.

  16. DIFFERENCE OF THE AVERAGE SINGLE-PARTICLE ENERGY SUMS OBTAINED BY SMOOTHING IN ENERGY AND PARTICLE-NUMBER SPACE

    E-Print Network [OSTI]

    Pomorska, Bozena

    .p. energy space (e-folding). An alternative way of obtaining of the smooth energy by folding of the singleDIFFERENCE OF THE AVERAGE SINGLE-PARTICLE ENERGY SUMS OBTAINED BY SMOOTHING IN ENERGY AND PARTICLE the smooth energy of nucleus is obtained by folding of the single-particle (s.p.) energy density in the s

  17. Natural gas vehicles - market potential

    SciTech Connect (OSTI)

    Not Available

    1984-04-27

    Proponents of natural-gas fueled vehicles (NGVs) claim that the economic, environmental, and performance advantages have a potential market, particularly for large fleets. They also concede that obstacles in the form of price uncertainties, the lack of financial incentives, a weak service infrastructure, state and local taxes and regulations, the high cost of natural gas pumps, and competition from other fuel alternatives are major impediments. Gas utilities must promote the NGV market and the federal government must develop safety and environmental standards before the NGV industry can hope to develop a significant market. 6 references.

  18. Dirac solutions for quaternionic potentials

    SciTech Connect (OSTI)

    De Leo, Stefano Giardino, Sergio

    2014-02-15

    The Dirac equation is solved for quaternionic potentials, i?V{sub 0} + j?W{sub 0} (V{sub 0}?R , W{sub 0}?C). The study shows two different solutions. The first one contains particle and anti-particle solutions and leads to the diffusion, tunneling, and Klein energy zones. The standard solution is recovered taking the complex limit of this solution. The second solution, which does not have a complex counterpart, can be seen as a V{sub 0}-antiparticle or |W{sub 0}|-particle solution.

  19. Effective potentials for Folding Proteins

    E-Print Network [OSTI]

    Nan-yow Chen; Zheng-Yao Su; Chung-Yu Mou

    2006-01-28

    A coarse-grained off-lattice model that is not biased in any way to the native state is proposed to fold proteins. To predict the native structure in a reasonable time, the model has included the essential effects of water in an effective potential. Two new ingredients, the dipole-dipole interaction and the local hydrophobic interaction, are introduced and are shown to be as crucial as the hydrogen bonding. The model allows successful folding of the wild-type sequence of protein G and may have provided important hints to the study of protein folding.

  20. Sensitivity of Niobium Superconducting RF Cavities to Magnetic Field

    E-Print Network [OSTI]

    Gonnella, Dan

    2015-01-01

    Future particle accelerators such as the the SLAC "Linac Coherent Light Source-II" (LCLS-II) and the proposed Cornell Energy Recovery Linac (ERL) require hundreds of superconducting RF (SRF) cavities operating in continuous wave (CW) mode. In order to achieve economic feasibility of projects such as these, the cavities must achieve a very high intrinsic quality factor (Q0). In order to reach these high Q0's in the case of LCLS-II, nitrogen-doping has been proposed as a cavity preparation technique. When dealing with Q0's greater than 1x10^10, the effects of ambient magnetic field on Q0 become significant. Here we show that the sensitivity that a cavity has to ambient magnetic field is highly dependent on the cavity preparation. Specifically, standard electropolished and 120C baked cavities show a sensitivity of ~0.8 and ~0.6 nOhm/mG trapped, respectively, while nitrogen-doped cavities show a sensitivity of ~2 to 5 nOhm/mG trapped. Less doping results in weaker sensitivity. This difference in sensitivities is ...

  1. SCALE-6 Sensitivity/Uncertainty Methods and Covariance Data

    SciTech Connect (OSTI)

    Williams, Mark L [ORNL; Rearden, Bradley T [ORNL

    2008-01-01

    Computational methods and data used for sensitivity and uncertainty analysis within the SCALE nuclear analysis code system are presented. The methodology used to calculate sensitivity coefficients and similarity coefficients and to perform nuclear data adjustment is discussed. A description is provided of the SCALE-6 covariance library based on ENDF/B-VII and other nuclear data evaluations, supplemented by 'low-fidelity' approximate covariances. SCALE (Standardized Computer Analyses for Licensing Evaluation) is a modular code system developed by Oak Ridge National Laboratory (ORNL) to perform calculations for criticality safety, reactor physics, and radiation shielding applications. SCALE calculations typically use sequences that execute a predefined series of executable modules to compute particle fluxes and responses like the critical multiplication factor. SCALE also includes modules for sensitivity and uncertainty (S/U) analysis of calculated responses. The S/U codes in SCALE are collectively referred to as TSUNAMI (Tools for Sensitivity and UNcertainty Analysis Methodology Implementation). SCALE-6-scheduled for release in 2008-contains significant new capabilities, including important enhancements in S/U methods and data. The main functions of TSUNAMI are to (a) compute nuclear data sensitivity coefficients and response uncertainties, (b) establish similarity between benchmark experiments and design applications, and (c) reduce uncertainty in calculated responses by consolidating integral benchmark experiments. TSUNAMI includes easy-to-use graphical user interfaces for defining problem input and viewing three-dimensional (3D) geometries, as well as an integrated plotting package.

  2. Use of Forward Sensitivity Analysis Method to Improve Code Scaling, Applicability, and Uncertainty (CSAU) Methodology

    SciTech Connect (OSTI)

    Haihua Zhao; Vincent A. Mousseau; Nam T. Dinh

    2010-10-01

    Code Scaling, Applicability, and Uncertainty (CSAU) methodology was developed in late 1980s by US NRC to systematically quantify reactor simulation uncertainty. Basing on CSAU methodology, Best Estimate Plus Uncertainty (BEPU) methods have been developed and widely used for new reactor designs and existing LWRs power uprate. In spite of these successes, several aspects of CSAU have been criticized for further improvement: i.e., (1) subjective judgement in PIRT process; (2) high cost due to heavily relying large experimental database, needing many experts man-years work, and very high computational overhead; (3) mixing numerical errors with other uncertainties; (4) grid dependence and same numerical grids for both scaled experiments and real plants applications; (5) user effects; Although large amount of efforts have been used to improve CSAU methodology, the above issues still exist. With the effort to develop next generation safety analysis codes, new opportunities appear to take advantage of new numerical methods, better physical models, and modern uncertainty qualification methods. Forward sensitivity analysis (FSA) directly solves the PDEs for parameter sensitivities (defined as the differential of physical solution with respective to any constant parameter). When the parameter sensitivities are available in a new advanced system analysis code, CSAU could be significantly improved: (1) Quantifying numerical errors: New codes which are totally implicit and with higher order accuracy can run much faster with numerical errors quantified by FSA. (2) Quantitative PIRT (Q-PIRT) to reduce subjective judgement and improving efficiency: treat numerical errors as special sensitivities against other physical uncertainties; only parameters having large uncertainty effects on design criterions are considered. (3) Greatly reducing computational costs for uncertainty qualification by (a) choosing optimized time steps and spatial sizes; (b) using gradient information (sensitivity result) to reduce sampling number. (4) Allowing grid independence for scaled integral effect test (IET) simulation and real plant applications: (a) eliminate numerical uncertainty on scaling; (b) reduce experimental cost by allowing smaller scaled IET; (c) eliminate user effects. This paper will review the issues related to the current CSAU, introduce FSA, discuss a potential Q-PIRT process, and show simple examples to perform FSA. Finally, the general research direction and requirements to use FSA in a system analysis code will be discussed.

  3. Qualification of data obtained during a severe accident. Illustrative examples from TMI-2 evaluations

    SciTech Connect (OSTI)

    Rempe, Joy L.; Knudson, Darrell L.

    2015-02-01

    The accidents at the Three Mile Island Unit 2 (TMI-2) Pressurized Water Reactor (PWR) and the Daiichi Units 1, 2, and 3 Boiling Water Reactors (BWRs) provide unique opportunities to evaluate instrumentation exposed to severe accident conditions. Conditions associated with the release of coolant and the hydrogen burn that occurred during the TMI-2 accident exposed instrumentation to harsh conditions, including direct radiation, radioactive contamination, and high humidity with elevated temperatures and pressures. Post-TMI-2 instrumentation evaluation programs focused on data required by TMI-2 operators to assess the condition of the reactor and containment and the effect of mitigating actions taken by these operators. Prior efforts also focused on sensors providing data required for subsequent forensic evaluations and accident simulations. This paper provides additional details related to the formal process used to develop a qualified TMI-2 data base and presents data qualification details for three parameters: reactor coolant system (RCS) pressure; containment building temperature; and containment pressure. These selected examples illustrate the types of activities completed in the TMI-2 data qualification process and the importance of such a qualification effort. These details are described to facilitate implementation of a similar process using data and examinations at the Daiichi Units 1, 2, and 3 reactors so that BWR-specific benefits can be obtained.

  4. Porous acicular mullite obtained by controlled oxidation of waste molybdenum disilicide

    SciTech Connect (OSTI)

    Bu?evac, Dušan, E-mail: bucevac@vinca.rs [Vin?a Institute of Nuclear Sciences, University of Belgrade, Belgrade 11001 (Serbia); Dap?evi?, Aleksandra [Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade 11120 (Serbia); Maksimovi?, Vesna [Vin?a Institute of Nuclear Sciences, University of Belgrade, Belgrade 11001 (Serbia)

    2014-02-01

    Highlights: • Waste MoSi{sub 2} heating elements were used as starting material for fabrication of porous acicular mullite. • Calcined MoSi{sub 2} powder was source of SiO{sub 2} and pore former at the same time. • Porous acicular mullite is promising material for filtration of diesel engine exhaust. • Samples with decent mechanical integrity and porosity of more than 60% were fabricated. - Abstract: Porous acicular mullite was fabricated by using waste MoSi{sub 2} heating element and Al{sub 2}O{sub 3}. Careful calcination of the pulverized heating element led to the formation of a mixture of MoO{sub 3} and amorphous SiO{sub 2}. This mixture was employed as both SiO{sub 2} precursor and pore former. The oxidation of MoSi{sub 2} and mullite formation were studied. The effect of fabrication temperature on phase composition, porosity, grain morphology, and compressive strength of sintered mullite was examined. Pure mullite with porosity of more than 60% and compressive strength of ?20 MPa was obtained at temperature as low as 1300 °C. The microstructure consisted of elongated, rectangular, prism-like grains which are known to be effective in filtration of diesel engine exhaust. The increase in sintering temperature caused the change of grain morphology and reduction in compressive strength.

  5. The component groups structure of DPPC bilayers obtained by specular neutron reflectometry

    E-Print Network [OSTI]

    Michal Beli?ka; Yuri Gerelli; Norbert Ku?erka; Giovanna Fragneto

    2014-12-16

    Specular neutron reflectometry (SNR) was measured on a system of a floating bilayer consisting of 1,2-dipalmitoyl-d62-\\textit{sn}-glycero-3-phosphocholine (d62-diC16:0PC) deposited over a 1,2-dibehenoyl-\\textit{sn}-glycero-3-phosphocholine (diC22:0PC) bilayer at 25 and 55 {\\deg}C. The internal structure of lipid bilayers was described by a one dimensional scattering length density profile (SLDP) model, originally developed for the evaluation of small angle scattering data. The corresponding model reflectivity curves successfully describe the experimental reflectivity curves of a supported bilayer in the gel phase and a system of a floating bilayer in the liquid crystalline phase. The reflectivity data from the supported bilayer were evaluated individually and served further as an input by the data treatment of floating bilayer reflectivity curves. The results yield internal structure of a deposited and floating bilayer on the level of component groups of lipid molecules. The obtained structure of the floating d62-diC16:0PC bilayer displays high resemblance to the bilayer structure in the form of unilamellar vesicles, however, simultaneously it shows rate of fluctuations in comparison to unilamellar vesicle bilayers.

  6. Casingless down-hole for sealing an ablation volume and obtaining a sample for analysis

    DOE Patents [OSTI]

    Noble, D.T.; Braymen, S.D.; Anderson, M.S.

    1996-10-01

    A casing-less down hole sampling system for acquiring a subsurface sample for analysis using an inductively coupled plasma system is disclosed. The system includes a probe which is pushed into the formation to be analyzed using a hydraulic ram system. The probe includes a detachable tip member which has a soil point and a barb, with the soil point aiding the penetration of the earth, and the barb causing the tip member to disengage from the probe and remain in the formation when the probe is pulled up. The probe is forced into the formation to be tested, and then pulled up slightly, to disengage the tip member and expose a column of the subsurface formation to be tested. An instrumentation tube mounted in the probe is then extended outward from the probe to longitudinally extend into the exposed column. A balloon seal mounted on the end of the instrumentation tube allows the bottom of the column to be sealed. A source of laser radiation is emitted from the instrumentation tube to ablate a sample from the exposed column. The instrumentation tube can be rotated in the probe to sweep the laser source across the surface of the exposed column. An aerosol transport system carries the ablated sample from the probe to the surface for testing in an inductively coupled plasma system. By testing at various levels in the down-hole as the probe is extracted from the soil, a profile of the subsurface formation may be obtained. 9 figs.

  7. Apparatus for transmitting power obtained by converting the exhaust energy of an engine

    SciTech Connect (OSTI)

    Miyajima, H.

    1988-08-30

    This patent describes an apparatus for transmitting power obtained by converting the exhaust energy of a primary engine, the primary engine having a crank shaft and an exhaust passage for passing exhaust gas from the engine. The apparatus consists of: an output turbine having an output shaft and an intake port coupled to the exhaust passage; a compressor mounted on the output shaft of the turbine and including an outlet port; a rotary type engine having a double jointed trochoidal shaped rotor housing, the housing having an expansion chamber with an intake port and an outlet port and a compression chamber, the engine further comprising an eccentrically rotatable generally triangular shaped rotor mounted within the housing and a rotor shaft coupled to the rotor. The outlet port of the compressor is coupled to the intake port of the expansion chamber, the outlet port of the expansion chamber being coupled to the intake port of the output turbine; and power transmitting means connected between the crank shaft of the primary engine and the rotor shaft of the rotary engine whereby auxiliary power is provided to the primary engine.

  8. Gas sensitive materials for gas detection and methods of making

    DOE Patents [OSTI]

    Trakhtenberg, Leonid Israilevich; Gerasimov, Genrikh Nikolaevich; Gromov, Vladimir Fedorovich; Rozenberg, Valeriya Isaakovna

    2014-07-15

    A gas sensitive material comprising SnO.sub.2 nanocrystals doped with In.sub.2O.sub.3 and an oxide of a platinum group metal, and a method of making the same. The platinum group metal is preferably Pd, but also may include Pt, Ru, Ir, and combinations thereof. The SnO.sub.2 nanocrystals have a specific surface of 7 or greater, preferably about 20 m2/g, and a mean particle size of between about 10 nm and about 100 nm, preferably about 40 nm. A gas detection device made from the gas sensitive material deposited on a substrate, the gas sensitive material configured as a part of a current measuring circuit in communication with a heat source.

  9. Gas sensitive materials for gas detection and method of making

    DOE Patents [OSTI]

    Trakhtenberg, Leonid Israilevich; Gerasimov, Genrikh Nikolaevich; Gromov, Vladimir Fedorovich; Rozenberg, Valeriya Isaakovna

    2012-12-25

    A gas sensitive material comprising SnO2 nanocrystals doped with In2O3 and an oxide of a platinum group metal, and a method of making the same. The platinum group metal is preferably Pd, but also may include Pt, Ru, Ir, and combinations thereof. The SnO2 nanocrystals have a specific surface of 7 or greater, preferably about 20 m2/g, and a mean particle size of between about 10 nm and about 100 nm, preferably about 40 nm. A gas detection device made from the gas sensitive material deposited on a substrate, the gas sensitive material configured as a part of a current measuring circuit in communication with a heat source.

  10. Instrumented Water Tanks can Improve Air Shower Detector Sensitivity

    E-Print Network [OSTI]

    R. Atkins; W. Benbow; D. Berley; M. -L. Chen; D. G. Coyne; R. S. Delay; B. L. Dingus; D. E. Dorfan; R. W. Ellsworth; D. Evans; A. Falcone; L. Fleysher; R. Fleysher; G. Gisler; J. A. Goodman; T. J. Haines; C. M. Hoffman; S. Hugenberger; L. A. Kelley; I. Leonor; J. Macri; M. McConnell; J. F. McCullough; J. E. McEnery; R. S. Miller; A. I. Mincer; M. F. Morales; P. Nemethy; J. M. Ryan; M. Schneider; B. Shen; A. Shoup; G. Sinnis; A. J. Smith; G. W. Sullivan; T. N. Thompson; O. T. Tumer; K. Wang; M. O. Wascko; S. Westerhoff; D. A. Williams; T. Yang; G. B. Yodh

    1999-07-15

    Previous works have shown that water Cherenkov detectors have superior sensitivity to those of scintillation counters as applied to detecting extensive air showers (EAS). This is in large part due to their much higher sensitivity to EAS photons which are more than five times more numerous than EAS electrons. Large area water Cherenkov detectors can be constructed relatively cheaply and operated reliably. A sparse detector array has been designed which uses these types of detectors to substantially increase the area over which the Milagro Gamma Ray Observatory collects EAS information. Improvements to the Milagro detector's performance characteristics and sensitivity derived from this array and preliminary results from a prototype array currently installed near the Milagro detector will be presented.

  11. Instrumented Water Tanks can Improve Air Shower Detector Sensitivity

    E-Print Network [OSTI]

    Atkins, R; Berley, D; Chen, M L; Coyne, D G; Delay, R S; Dingus, B L; Dorfan, D E; Ellsworth, R W; Evans, D; Falcone, A D; Fleysher, L; Fleysher, R; Gisler, G; Goodman, J A; Haines, T J; Hoffman, C M; Hugenberger, S; Kelley, L A; Leonor, I; Macri, J R; McConnell, M; McCullough, J F; McEnery, J E; Miller, R S; Mincer, A I; Morales, M F; Némethy, P; Ryan, J M; Schneider, M; Shen, B; Shoup, A L; Sinnis, G; Smith, A J; Sullivan, G W; Thompson, T N; Tümer, T O; Wang, K; Wascko, M O; Westerhoff, S; Williams, D A; Yang, T; Yodh, G B

    1999-01-01

    Previous works have shown that water Cherenkov detectors have superior sensitivity to those of scintillation counters as applied to detecting extensive air showers (EAS). This is in large part due to their much higher sensitivity to EAS photons which are more than five times more numerous than EAS electrons. Large area water Cherenkov detectors can be constructed relatively cheaply and operated reliably. A sparse detector array has been designed which uses these types of detectors to substantially increase the area over which the Milagro Gamma Ray Observatory collects EAS information. Improvements to the Milagro detector's performance characteristics and sensitivity derived from this array and preliminary results from a prototype array currently installed near the Milagro detector will be presented.

  12. Exponential Sensitivity and its Cost in Quantum Physics

    E-Print Network [OSTI]

    András Gilyén; Tamás Kiss; Igor Jex

    2015-08-13

    State selective protocols, like entanglement purification, lead to an essentially non-linear quantum evolution, unusual in naturally occurring quantum processes. Sensitivity to initial states in quantum systems, stemming from such non-linear dynamics, is a promising perspective for applications. Here we demonstrate that chaotic behaviour is a rather generic feature in state selective protocols: exponential sensitivity can exist for all initial states in an experimentally realisable optical scheme. Moreover, any complex rational polynomial map, including the example of the Mandelbrot set, can be directly realised. In state selective protocols, one needs an ensemble of initial states, the size of which decreases with each iteration. We prove that exponential sensitivity to initial states in any quantum system have to be related to downsizing the initial ensemble also exponentially. Our results show that magnifying initial differences of quantum states (a Schr\\"odinger microscope) is possible, however, there is a strict bound on the number of copies needed.

  13. Once-through steam-generator sensitivity calculations

    SciTech Connect (OSTI)

    Steiner, J.L.; Siebe, D.A.

    1988-01-01

    A series of TRAC-PF1/MOD2 thermal-hydraulic calculations has been performed to determine the effect of uncertainties in modeling once through steam-generator (OTSG) secondary-side phenomena on the calculated behavior of Babcock and Wilcox power plants. The calculations were performed by varying parameters in correlations for the secondary-side phenomena. The parameters and transients were chosen to show the maximum expected sensitivity of the calculated results to the parameter variations. The parameters were then varied over a range representing the estimated uncertainty in the correlation. In this manner, the sensitivity if the calculated plant behavior to the modeling uncertainties was determined with a reasonable number of calculations. The sensitivity of calculated plant behavior to variations in interfacial heat-transfer in the OTSG secondaries was determined in a series of steam-generator overfill transient calculations. Calculations were performed for a main steam line break (MSLB) transient to quantify the sensitivity to variations in interfacial drag in the secondaries; the interfacial drag was varied in these calculations to indicate the effects of entrainment and de-entrainment processes, for which no specific models exist in the code. In addition to the transient calculations, a series of steady-state calculations was performed to determine the sensitivity of the OTSG primary-to-secondary heat transfer to the assumed fraction of tubes wetted by the auxiliary feedwater (AFW) injection. The plant model used for the sensitivity calculations was qualified by performing a benchmark calculation for a natural circulation test in the TMI-1 plant.

  14. Aquifer sensitivity assessment modeling at a large scale

    SciTech Connect (OSTI)

    Berg, R.C.; Abert, C.C. (Illinois State Geological Survey, Champaign, IL (United States))

    1994-03-01

    A 480 square-mile region within Will County, northeastern Illinois was used as a test region for an evaluation of the sensitivity of aquifers to contamination. An aquifer sensitivity model was developed using a Geographic Information System (GIS) with ARC/INFO software to overlay and combine several data layers. Many of the input data layers were developed using 2-dimensional surface modeling (Interactive Surface Modeling (ISM)) and 3-dimensional volume modeling (Geologic Modeling Program (GMP)) computer software. Most of the input data layers (drift thickness, thickness of sand and gravel, depth to first aquifer) were derived from interpolation of descriptive logs for water wells and engineering borings from their study area. A total of 2,984 logs were used to produce these maps. The components used for the authors' model are (1) depth to sand and gravel or bedrock, (2) thickness of the uppermost sand and gravel aquifer, (3) drift thickness, and (4) absence or presence of uppermost bedrock aquifer. The model is an improvement over many aquifer sensitivity models because it combines specific information on depth to the uppermost sand and gravel aquifer with information on the thickness of the uppermost sand and gravel aquifer. The manipulation of the source maps according to rules-based assumptions results in a colored aquifer sensitivity map for the Will County study area. This colored map differentiates 42 aquifer sensitivity map areas by using line patterns within colors. The county-scale model results in an aquifer sensitivity map that can be a useful tool for making land-use planning decisions regarding aquifer protection and management of groundwater resources.

  15. A nanoparticle label/immunochromatographic electrochemical biosensor for rapid and sensitive detection of prostate-specific antigen

    SciTech Connect (OSTI)

    Lin, Ying-Ying; Wang, Jun; Liu, Guodong; Wu, Hong; Wai, Chien M.; Lin, Yuehe

    2008-06-15

    We present a nanoparticle (NP) label/immunochromatographic electrochemical biosensor (IEB) for rapid and sensitive detection of prostate-specific antigen (PSA) in human serum. This IEB integrates the immunochromatographic strip with the electrochemical detector for transducing quantitative signals. The NP label, made of CdSe@ZnS, serves as a signal-amplifier vehicle. A sandwich immunoreaction was performed on the immunochromatographic strip. The captured NP labels in the test zone were determined by highly sensitive stripping voltammetric measurement of the dissolved metallic component (cadmium) with a disposable-screen-printed electrode, which is embedded underneath the membrane of the test zone. Experimental parameters (e.g., immunoreaction time, the amount of anti-PSA-NP conjugations applied) and electrochemical detection conditions (e.g., preconcentration potential and time) were optimized using this biosensor for PSA detection. The analytical performance of this biosensor was evaluated with serum PSA samples according to the “figure-of-merits” (e.g., dynamic range, reproducibility, and detection limit). The results were validated with enzyme-linked immunosorbent assay (ELISA) and show high consistency. It is found that this biosensor is very sensitive with the detection limit of 0.02 ng/mL PSA and is quite reproducible. This method is rapid, clinically accurate, and less expensive than other diagnosis tools for PSA; therefore, this IEB coupled with a portable electrochemical analyzer shows great promise for simple, sensitive, quantitative point-of-care testing of disease-related protein biomarkers.

  16. Assessment of national systems for obtaining local acceptance of waste management siting and routing activities

    SciTech Connect (OSTI)

    Paige, H.W.; Lipman, D.S.; Owens, J.E.

    1980-07-01

    There is a rich mixture of formal and informal approaches being used in our sister nuclear democracies in their attempts to deal with the difficulties of obtaining local acceptance for siting of waste management facilities and activities. Some of these are meeting with a degree of success not yet achieved in the US. Although this survey documents and assesses many of these approaches, time did not permit addressing in any detail their relevance to common problems in the US. It would appear the US could benefit from a periodic review of the successes and failures of these efforts, including analysis of their applicability to the US system. Of those countries (Germany, Sweden, Switzerland, Japan, Belgium, and the US) who are working to a time table for the preparation of a high-level waste (HLW) repository, Germany is the only country to have gained local siting acceptance for theirs. With this (the most difficult of siting problems) behind them they appear to be in the best overall condition relative to waste management progress and plans. This has been achieved without a particularly favorable political structure, made up for by determination on the part of the political leadership. Of the remaining three countries studied (France, UK and Canada) France, with its AVM production facility, is clearly the world leader in the HLW immobilization aspect of waste management. France, Belgium and the UK appear to have the least favorable political structures and environments for arriving at waste management decisions. US, Switzerland and Canada appear to have the least favorable political structures and environments for arriving at waste management decisions.

  17. Development of a general method for obtaining the geometry of microfluidic networks

    SciTech Connect (OSTI)

    Razavi, Mohammad Sayed Salimpour, M. R.; Shirani, Ebrahim

    2014-01-15

    In the present study, a general method for geometry of fluidic networks is developed with emphasis on pressure-driven flows in the microfluidic applications. The design method is based on general features of network's geometry such as cross-sectional area and length of channels. Also, the method is applicable to various cross-sectional shapes such as circular, rectangular, triangular, and trapezoidal cross sections. Using constructal theory, the flow resistance, energy loss and performance of the network are optimized. Also, by this method, practical design strategies for the fabrication of microfluidic networks can be improved. The design method enables rapid prediction of fluid flow in the complex network of channels and is very useful for improving proper miniaturization and integration of microfluidic networks. Minimization of flow resistance of the network of channels leads to universal constants for consecutive cross-sectional areas and lengths. For a Y-shaped network, the optimal ratios of consecutive cross-section areas (A{sub i+1}/A{sub i}) and lengths (L{sub i+1}/L{sub i}) are obtained as A{sub i+1}/A{sub i} = 2{sup ?2/3} and L{sub i+1}/L{sub i} = 2{sup ?1/3}, respectively. It is shown that energy loss in the network is proportional to the volume of network. It is also seen when the number of channels is increased both the hydraulic resistance and the volume occupied by the network are increased in a similar manner. Furthermore, the method offers that fabrication of multi-depth and multi-width microchannels should be considered as an integral part of designing procedures. Finally, numerical simulations for the fluid flow in the network have been performed and results show very good agreement with analytic results.

  18. Porous silicon ring resonator for compact, high sensitivity biosensing applications

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

    Rodriguez, Gilberto A.; Hu, Shuren; Weiss, Sharon M.

    2015-01-01

    A ring resonator is patterned on a porous silicon slab waveguide to produce a compact, high quality factor biosensor with a large internal surface area available for enhanced recognition of biological and chemical molecules. The porous nature of the ring resonator allows molecules to directly interact with the guided mode. Quality factors near 10,000 were measured for porous silicon ring resonators with a radius of 25 ?m. A bulk detection sensitivity of 380 nm/RIU was measured upon exposure to salt water solutions. Specific detection of nucleic acid molecules was demonstrated with a surface detection sensitivity of 4 pm/nM.

  19. Sensitivity analysis of the fission gas behavior model in BISON.

    SciTech Connect (OSTI)

    Swiler, Laura Painton; Pastore, Giovanni; Perez, Danielle; Williamson, Richard

    2013-05-01

    This report summarizes the result of a NEAMS project focused on sensitivity analysis of a new model for the fission gas behavior (release and swelling) in the BISON fuel performance code of Idaho National Laboratory. Using the new model in BISON, the sensitivity of the calculated fission gas release and swelling to the involved parameters and the associated uncertainties is investigated. The study results in a quantitative assessment of the role of intrinsic uncertainties in the analysis of fission gas behavior in nuclear fuel.

  20. Global Optical Potential for the Elastic Scattering of $^{6}$He at Low Energies

    E-Print Network [OSTI]

    Y. Kucuk; I. Boztosun; T. Topel

    2009-11-20

    A set of global optical potential has been derived to describe the interactions of $^{6}$He at low energies. The elastic scattering angular distribution data measured so far for many systems, ranging from $^{12}$C to $^{209}$Bi, have been considered within the framework of the optical model in order to find a global potential set to describe the experimental data consistently. We report that very good agreement between theoretical and experimental results has been obtained with small $\\chi^{2}/N$ values by using the derived potential set. The reaction cross section and volume integrals of the potentials have been deduced from the theoretical calculations for all studied systems at relevant energies.

  1. Approximate Analytical Solutions of a Two-Term Diatomic Molecular Potential with Centrifugal Barrier

    E-Print Network [OSTI]

    Altug Arda; Ramazan Sever

    2012-04-06

    Approximate analytical bound state solutions of the radial Schr\\"odinger equation are studied for a two-term diatomic molecular potential in terms of the hypergeometric functions for the cases where $q\\geq1$ and $q=0$. The energy eigenvalues and the corresponding normalized wave functions of the Manning-Rosen potential, the 'standard' Hulth\\'{e}n potential and the generalized Morse potential are briefly studied as special cases. It is observed that our analytical results are the same with the ones obtained before.

  2. Image potential states at metal-dielectric interfaces

    SciTech Connect (OSTI)

    Merry, W.R. Jr.

    1992-04-01

    Angle-resolved two-photon laser photoemission was used to observe the image potential electronic states on the (111) face of a silver single crystal. The transient image potential states were excited from the occupied bulk bands with photons whose energy was tunable around 4 eV. Photoemission of the image potential states was accomplished with photons of energy tunable around 2 eV. Image potential states were found to persist in the presence of physisorbed adlayers of xenon and cyclohexane. On clean Ag(111), the effective mass of the n=1 image potential state was found to be 1.4{plus_minus}0.1 times the mass of a free electron (m{sub e}). A binding energy of 0.77 eV, measured by earlier workers, was assumed in analysis of the data for the clean surface. On Ag(111), at 75 K covered by one monolayer of xenon, the binding energy of the n=1 image potential state was unchanged relative to its value on the clean surface. An effective mass of (1.00{plus_minus}0.05) {center_dot} m{sub e} was obtained. On Ag(111) at 167 K, covered by one monolayer of cyclohexane, the binding energy of the n=2 member of the image potential series was 0.30{plus_minus}0.05 eV. The energy of the n=1 state was again unchanged by deposition of the adsorbate. The effective masses of both states were (0.90{plus_minus}0.1) {center_dot} m{sub e}.

  3. Image potential states at metal-dielectric interfaces

    SciTech Connect (OSTI)

    Merry, W.R. Jr.

    1992-04-01

    Angle-resolved two-photon laser photoemission was used to observe the image potential electronic states on the (111) face of a silver single crystal. The transient image potential states were excited from the occupied bulk bands with photons whose energy was tunable around 4 eV. Photoemission of the image potential states was accomplished with photons of energy tunable around 2 eV. Image potential states were found to persist in the presence of physisorbed adlayers of xenon and cyclohexane. On clean Ag(111), the effective mass of the n=1 image potential state was found to be 1.4{plus minus}0.1 times the mass of a free electron (m{sub e}). A binding energy of 0.77 eV, measured by earlier workers, was assumed in analysis of the data for the clean surface. On Ag(111), at 75 K covered by one monolayer of xenon, the binding energy of the n=1 image potential state was unchanged relative to its value on the clean surface. An effective mass of (1.00{plus minus}0.05) {center dot} m{sub e} was obtained. On Ag(111) at 167 K, covered by one monolayer of cyclohexane, the binding energy of the n=2 member of the image potential series was 0.30{plus minus}0.05 eV. The energy of the n=1 state was again unchanged by deposition of the adsorbate. The effective masses of both states were (0.90{plus minus}0.1) {center dot} m{sub e}.

  4. A microwave resonator for limiting depth sensitivity for electron paramagnetic resonance spectroscopy of surfaces

    SciTech Connect (OSTI)

    Sidabras, Jason W.; Varanasi, Shiv K.; Hyde, James S.; Mett, Richard R.; Swarts, Steven G.; Swartz, Harold M.

    2014-10-15

    A microwave Surface Resonator Array (SRA) structure is described for use in Electron Paramagnetic Resonance (EPR) spectroscopy. The SRA has a series of anti-parallel transmission line modes that provides a region of sensitivity equal to the cross-sectional area times its depth sensitivity, which is approximately half the distance between the transmission line centers. It is shown that the quarter-wave twin-lead transmission line can be a useful element for design of microwave resonators at frequencies as high as 10 GHz. The SRA geometry is presented as a novel resonator for use in surface spectroscopy where the region of interest is either surrounded by lossy material, or the spectroscopist wishes to minimize signal from surrounding materials. One such application is in vivo spectroscopy of human finger-nails at X-band (9.5 GHz) to measure ionizing radiation dosages. In order to reduce losses associated with tissues beneath the nail that yield no EPR signal, the SRA structure is designed to limit depth sensitivity to the thickness of the fingernail. Another application, due to the resonator geometry and limited depth penetration, is surface spectroscopy in coating or material science. To test this application, a spectrum of 1.44 ?M of Mg{sup 2+} doped polystyrene 1.1 mm thick on an aluminum surface is obtained. Modeling, design, and simulations were performed using Wolfram Mathematica (Champaign, IL; v. 9.0) and Ansys High Frequency Structure Simulator (HFSS; Canonsburg, PA; v. 15.0). A micro-strip coupling circuit is designed to suppress unwanted modes and provide a balanced impedance transformation to a 50 ? coaxial input. Agreement between simulated and experimental results is shown.

  5. Efficiency and Sensitivity Analysis of Observation Networks for Atmospheric Inverse Modelling with Emissions

    E-Print Network [OSTI]

    Wu, Xueran; Jacob, Birgit

    2015-01-01

    The controllability of advection-diffusion systems, subject to uncertain initial values and emission rates, is estimated, given sparse and error affected observations of prognostic state variables. In predictive geophysical model systems, like atmospheric chemistry simulations, different parameter families influence the temporal evolution of the system.This renders initial-value-only optimisation by traditional data assimilation methods as insufficient. In this paper, a quantitative assessment method on validation of measurement configurations to optimize initial values and emission rates, and how to balance them, is introduced. In this theoretical approach, Kalman filter and smoother and their ensemble based versions are combined with a singular value decomposition, to evaluate the potential improvement associated with specific observational network configurations. Further, with the same singular vector analysis for the efficiency of observations, their sensitivity to model control can be identified by deter...

  6. Grid Parity for Residential Photovoltaics in the United States: Key Drivers and Sensitivities; Preprint

    SciTech Connect (OSTI)

    Ong, S.; Denholm, P.; Clark, N.

    2012-08-01

    In this report, we analyze PV break-even costs for U.S. residential customers. We evaluate some key drivers of grid parity both regionally and over time. We also examine the impact of moving from flat to time-of-use (TOU) rates, and we evaluate individual components of the break-even cost, including effect of rate structure and various incentives. Finally, we examine how PV markets might evolve on a regional basis considering the sensitivity of the break-even cost to four major drivers: technical performance, financing parameters, electricity prices and rates, and policies. We find that electricity price rather than technical parameters are in general the key drivers of the break-even cost of PV. Additionally, this analysis provides insight about the potential viability of PV markets.

  7. Theoretical Estimate of the Sensitivity of the CUORE Detector to Solar Axions

    E-Print Network [OSTI]

    Li, Dawei; Avignone, F T; Wang, Yuanxu

    2015-01-01

    In this paper we calculate the potential sensitivity of the CUORE detector to axions produced in the Sun through the Primakoff process and detected by coherent Bragg conversion by the inverse Primakoff process. The conversion rate is calculated using density functional theory for the electron density and realistic expectations for the energy resolution and background of CUORE. Monte Carlo calculations for $5~$y$\\times741~$kg=$3705~$kg y of exposure are analyzed using time correlation of individual events with the theoretical time-dependent counting rate and lead to an expected limit on the axion-photon coupling $g_{a\\gamma\\gamma}<3.83\\times 10^{-10}~GeV^{-1}$ for axion masses less than several eV.

  8. Sensitivity studies for r-process nucleosynthesis in three astrophysical scenarios

    E-Print Network [OSTI]

    R. Surman; M. Mumpower; J. Cass; I. Bentley; A. Aprahamian; G. C. McLaughlin

    2013-08-31

    In rapid neutron capture, or r-process, nucleosynthesis, heavy elements are built up via a sequence of neutron captures and beta decays that involves thousands of nuclei far from stability. Though we understand the basics of how the r-process proceeds, its astrophysical site is still not conclusively known. The nuclear network simulations we use to test potential astrophysical scenarios require nuclear physics data (masses, beta decay lifetimes, neutron capture rates, fission probabilities) for all of the nuclei on the neutron-rich side of the nuclear chart, from the valley of stability to the neutron drip line. Here we discuss recent sensitivity studies that aim to determine which individual pieces of nuclear data are the most crucial for r-process calculations. We consider three types of astrophysical scenarios: a traditional hot r-process, a cold r-process in which the temperature and density drop rapidly, and a neutron star merger trajectory.

  9. The sensitivity of r-process nucleosynthesis to the properties of neutron-rich nuclei

    E-Print Network [OSTI]

    R. Surman; M. Mumpower; J. Cass; A. Aprahamian

    2013-08-31

    About half of the heavy elements in the Solar System were created by rapid neutron capture, or r-process, nucleosynthesis. In the r-process, heavy elements are built up via a sequence of neutron captures and beta decays in which an intense neutron flux pushes material out towards the neutron drip line. The nuclear network simulations used to test potential astrophysical scenarios for the r-process therefore require nuclear physics data (masses, beta decay lifetimes, neutron capture rates, fission probabilities) for thousands of nuclei far from stability. Only a small fraction of this data has been experimentally measured. Here we discuss recent sensitivity studies that aim to determine the nuclei whose properties are most crucial for r-process calculations.

  10. Sensitivity of storage field performance to geologic and cavern design parameters in salt domes.

    SciTech Connect (OSTI)

    Ehgartner, Brian L.; Park, Byoung Yoon

    2009-03-01

    A sensitivity study was performed utilizing a three dimensional finite element model to assess allowable cavern field sizes for strategic petroleum reserve salt domes. A potential exists for tensile fracturing and dilatancy damage to salt that can compromise the integrity of a cavern field in situations where high extraction ratios exist. The effects of salt creep rate, depth of salt dome top, dome size, caprock thickness, elastic moduli of caprock and surrounding rock, lateral stress ratio of surrounding rock, cavern size, depth of cavern, and number of caverns are examined numerically. As a result, a correlation table between the parameters and the impact on the performance of storage field was established. In general, slower salt creep rates, deeper depth of salt dome top, larger elastic moduli of caprock and surrounding rock, and a smaller radius of cavern are better for structural performance of the salt dome.

  11. $D\\overline{D}$ momentum correlations versus relative azimuth as a sensitive probe for thermalization

    E-Print Network [OSTI]

    G. Tsiledakis; K. Schweda

    2009-02-02

    In high-energy nuclear collisions at LHC, where a QGP might be created, the degree of thermalization at the partonic level is a key issue. Due to their large mass, heavy quarks are a powerful tool to probe thermalization. We propose to measure azimuthal correlations of heavy-quark hadrons and their decay products. Changes or even the complete absence of these initially existing azimuthal correlations in $Pb-Pb$ collisions might indicate thermalization at the partonic level. We present studies with PYTHIA for $p-p$ collisions at 14 TeV using the two-particle transverse momentum correlator ${}$ as a sensitive measure of potential changes in these azimuthal correlations. Contributions from transverse radial flow are estimated.

  12. Sensitivity of natural gas HCCI combustion to fuel and operating parameters using detailed kinetic modeling

    SciTech Connect (OSTI)

    Aceves, S; Dibble, R; Flowers, D; Smith, J R; Westbrook, C K

    1999-07-19

    This paper uses the HCT (Hydrodynamics, Chemistry and Transport) chemical kinetics code to analyze natural gas HCCI combustion in an engine. The HCT code has been modified to better represent the conditions existing inside an engine, including a wall heat transfer correlation. Combustion control and low power output per displacement remain as two of the biggest challenges to obtaining satisfactory performance out of an HCCI engine, and these are addressed in this paper. The paper considers the effect of natural gas composition on HCCI combustion, and then explores three control strategies for HCCI engines: DME (dimethyl ether) addition, intake heating and hot EGR addition. The results show that HCCI combustion is sensitive to natural gas composition, and an active control may be required to compensate for possible changes in composition. The three control strategies being considered have a significant effect in changing the combustion parameters for the engine, and should be able to control HCCI combustion.

  13. Measurement of laser heating in spin exchange optical pumping by NMR diffusion sensitization gradients

    SciTech Connect (OSTI)

    Parnell, Steven R.; Deppe, Martin H.; Ajraoui, Salma; Parra-Robles, Juan; Wild, Jim M.; Boag, Stephen

    2010-05-15

    This paper details pulsed gradient NMR measurements of the {sup 3}He diffusion coefficient in sealed cells during spin exchange optical pumping. The potential of ultra low field magnetic resonance imgaing (MRI) and NMR for noninvasive measurement of cell pressure is demonstrated. Diffusion sensitization gradients allow measurement of the {sup 3}He diffusion coefficient from which the pressure and/or temperature of the gas can be determined during optical pumping. The pressure measurements were compared with neutron time of flight transmission measurements. Good agreement was observed between the temperature/pressure measurements and predictions based on Chapman-Enskog theory. The technique had sufficient sensitivity to observe the diffusion coefficient increasing with temperature in a sealed cell. With this method, evidence for laser heating of the {sup 3}He during optical pumping was found. The results show that NMR diffusion measurements allow noninvasive measurement of the cell temperature and/or pressure in an optical pumping setup. The method can be expanded using MRI to probe the spatial distribution of the diffusion coefficient. These techniques can be applied to the further investigation of polarization limiting effects such as laser heating.

  14. Thin-film encapsulation of the air-sensitive organic-based ferrimagnet vanadium tetracyanoethylene

    SciTech Connect (OSTI)

    Froning, I. H.; Harberts, M.; Yu, H.; Johnston-Halperin, E.; Lu, Y.; Epstein, A. J.

    2015-03-23

    The organic-based ferrimagnet vanadium tetracyanoethylene (V[TCNE]{sub x?2}) has demonstrated potential for use in both microwave electronics and spintronics due to the combination of high temperature magnetic ordering (T{sub C}?>?600?K), extremely sharp ferromagnetic resonance (peak to peak linewidth of 1?G), and low-temperature conformal deposition via chemical vapor deposition (deposition temperature of 50?°C). However, air-sensitivity leads to the complete degradation of the films within 2?h under ambient conditions, with noticeable degradation occurring within 30 min. Here, we demonstrate encapsulation of V[TCNE]{sub x?2} thin films using a UV-cured epoxy that increases film lifetime to over 710 h (30 days) as measured by the remanent magnetization. The saturation magnetization and Curie temperature decay more slowly than the remanence, and the coercivity is unchanged after 340 h (14 days) of air exposure. Fourier transform infrared spectroscopy indicates that the epoxy does not react with the film, and magnetometry measurements show that the presence of the epoxy does not degrade the magnetic properties. This encapsulation strategy directly enables a host of experimental protocols and investigations not previously feasible for air-sensitive samples and lays the foundation for the development of practical applications for this promising organic-based magnetic material.

  15. Development, sensitivity analysis, and uncertainty quantification of high-fidelity arctic sea ice models.

    SciTech Connect (OSTI)

    Peterson, Kara J.; Bochev, Pavel Blagoveston; Paskaleva, Biliana S.

    2010-09-01

    Arctic sea ice is an important component of the global climate system and due to feedback effects the Arctic ice cover is changing rapidly. Predictive mathematical models are of paramount importance for accurate estimates of the future ice trajectory. However, the sea ice components of Global Climate Models (GCMs) vary significantly in their prediction of the future state of Arctic sea ice and have generally underestimated the rate of decline in minimum sea ice extent seen over the past thirty years. One of the contributing factors to this variability is the sensitivity of the sea ice to model physical parameters. A new sea ice model that has the potential to improve sea ice predictions incorporates an anisotropic elastic-decohesive rheology and dynamics solved using the material-point method (MPM), which combines Lagrangian particles for advection with a background grid for gradient computations. We evaluate the variability of the Los Alamos National Laboratory CICE code and the MPM sea ice code for a single year simulation of the Arctic basin using consistent ocean and atmospheric forcing. Sensitivities of ice volume, ice area, ice extent, root mean square (RMS) ice speed, central Arctic ice thickness, and central Arctic ice speed with respect to ten different dynamic and thermodynamic parameters are evaluated both individually and in combination using the Design Analysis Kit for Optimization and Terascale Applications (DAKOTA). We find similar responses for the two codes and some interesting seasonal variability in the strength of the parameters on the solution.

  16. 3-D description of fracture surfaces and stress-sensitivity analysis for naturally fractured reservoirs

    SciTech Connect (OSTI)

    Zhang, S.Q.; Jioa, D.; Meng, Y.F.; Fan, Y.

    1997-08-01

    Three kinds of reservoir cores (limestone, sandstone, and shale with natural fractures) were used to study the effect of morphology of fracture surfaces on stress sensitivity. The cores, obtained from the reservoirs with depths of 2170 to 2300 m, have fractures which are mated on a large scale, but unmated on a fine scale. A specially designed photoelectric scanner with a computer was used to describe the topography of the fracture surfaces. Then, theoretical analysis of the fracture closure was carried out based on the fracture topography generated. The scanning results show that the asperity has almost normal distributions for all three types of samples. For the tested samples, the fracture closure predicted by the elastic-contact theory is different from the laboratory measurements because plastic deformation of the aspirates plays an important role under the testing range of normal stresses. In this work, the traditionally used elastic-contact theory has been modified to better predict the stress sensitivity of reservoir fractures. Analysis shows that the standard deviation of the probability density function of asperity distribution has a great effect on the fracture closure rate.

  17. Effect of YSZ sintering temperature on mixed potential sensor performance

    SciTech Connect (OSTI)

    Sekhar, Praveen K; Brosha, Eric L; Rangachary, Mukundan; Garzon, Fernando H; Nelson, Mark A; Toracco, Dennis

    2009-01-01

    In this article, the influence of Yttria-Stabilized Zirconia (YSZ) sintering temperature on a Pt/YSZ/La{sub 0.8}Sr{sub 0.2}CrO{sub 3} mixed potential sensor performance is reported. The sintering temperature of YSZ was varied from 1000 to 1200 C. Mercury porosity measurements were performed to estimate the porosity and tortuosity of the YSZ sample as a function of sintering temperature. Further, the surface area of YSZ was computed by the BET method. After YSZ characterization, the unbiased and biased sensor response was recorded. The 1000 C sintered YSZ sample was taken as the reference for comparison purposes. Experimental results indicated a 30% reduction in porosity for the 1200 C sintered YSZ sample, accounting for a 14-fold increase in the sensor response rise time. In addition, for the same sample, a 13-fold increase in sensitivity was observed upon exposure to propylene (100 ppm), associated with a 76% reduction in surface area. The slow response time of the sensor with YSZ sintered at higher temperatures has been attributed to higher tortuosity (delay in gas permeation to the three phase interface). Whereas, reduced heterogeneous catalysis induced by lower surface area accounts for the rise in sensitivity levels. The optimum YSZ sintering temperature was found to lie between 1100 and 1150 C.

  18. Salt-sensitive hypertension in mitochondrial superoxide dismutase deficiency is associated with intra-renal oxidative stress and inflammation

    E-Print Network [OSTI]

    Jin, K; Vaziri, ND

    2014-01-01

    tion, autoimmunity and salt-sensitive hypertension. Clin ExpSOD deficiency with salt-sensitive hypertension andblood pressure levels in salt-sensitive hypertension. Am J

  19. Geoacoustic characterization by the image source method: a sensitivity study

    E-Print Network [OSTI]

    Boyer, Edmond

    Geoacoustic characterization by the image source method: a sensitivity study S. Pinsona , L in the localization of the image sources. 1 Introduction Most of the present techniques to characterize the seafloor. The configuration is a broadband source and a vertical or an horizontal array. The method con- siders geological

  20. SIMPLIcity: Semantics-Sensitive Integrated Matching for Picture LIbraries

    E-Print Network [OSTI]

    Tian, Qi

    SIMPLIcity: Semantics-Sensitive Integrated Matching for Picture LIbraries James Z. Wang, Member, IEEE, Jia Li, Member, IEEE, and Gio Wiederhold, Fellow, IEEE AbstractÐThe need for efficient content, commerce, education, and Web image classification and searching. We present here SIMPLIcity (Semantics

  1. The Local Sensitivity of Posterior Expectations Paul Gustafson 1

    E-Print Network [OSTI]

    Council of Canada AMS 1991 subject classifications. Primary 62F15; secondary 62F35. Key words and phrases Statistical inference always requires various assumptions. Since often the assumptions are not directly. This is referred to as global sensitivity analysis; see Berger (1990), Lavine (1991a,b), and Wasserman (1992b

  2. Tolerance Analysis of Assemblies Using Kinematically Derived Sensitivities

    E-Print Network [OSTI]

    , which may be added to a kinematic model, resulting in an "equivalent variational mechanism" (EVM), which and kinematic/dynamic properties of mechanisms. Chapter 1. Introduction 1.1 Background Information ToleranceTolerance Analysis of Assemblies Using Kinematically Derived Sensitivities ADCATS Report No. 99

  3. Adjoint modeling for atmospheric pollution process sensitivity at regional scale

    E-Print Network [OSTI]

    Menut, Laurent

    , a strong pollution event was documented over Paris as part of the Etude et Simulation de la Qualite´ de l'airAdjoint modeling for atmospheric pollution process sensitivity at regional scale Laurent Menut 1998 the pollution event changes from a well-marked ozone plume issued from Paris to a more general

  4. ENVIRONMENTAL MODELING: 1 APPLICATIONS: MONTE CARLO SENSITIVITY SIMULATIONS

    E-Print Network [OSTI]

    Dimov, Ivan

    SIMULATIONS TO THE PROBLEM OF AIR POLLUTION TRANSPORT 3 1.1 The Danish Eulerian Model #12;Chapter 1 APPLICATIONS: MONTE CARLO SENSITIVITY SIMULATIONS TO THE PROBLEM OF AIR POLLUTION of pollutants in a real-live scenario of air-pollution transport over Europe. First, the developed technique

  5. Sensitivity Analysis Methodology for a Complex System Computational Model

    E-Print Network [OSTI]

    1 Sensitivity Analysis Methodology for a Complex System Computational Model James J. Filliben of computational models to serve as predictive surrogates for the system. The use of such models increasingly) of a computational model for a complex system is always an essential component in accepting/rejecting such a model

  6. Aircraft Landing Gear Thermo-Tribomechanical Model and Sensitivity Study

    E-Print Network [OSTI]

    Aircraft Landing Gear Thermo-Tribomechanical Model and Sensitivity Study Laurent Heirendt and Hugh-tribomechanical response of an aircraft landing gear shock absorber is presented. Structural damage has been reported sources and sinks in the landing gear shock absorber is developed. The thermo-tribomechanical model

  7. Optimal Production Planning under Time-sensitive Electricity Prices for

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    . The control actions, which balance the electricity supply and demand, differ on the time scale and usuallyOptimal Production Planning under Time-sensitive Electricity Prices for Continuous Power-dependent electricity pricing schemes. In this paper, we describe a deterministic MILP model that allows optimal

  8. Coronal Magnetography with FASR Magnetic Sensitivity of Radio Emission

    E-Print Network [OSTI]

    Coronal Magnetography with FASR - 1 - Magnetic Sensitivity of Radio Emission There are three main radio emission mechanisms that operate in the Sun. In order of their usefulness for direct measurement of coronal magnetic fields, the broad families are gyroemission, free-free emission, and plasma emission

  9. Coronal Magnetography with FASR Magnetic Sensitivity of Radio Emission

    E-Print Network [OSTI]

    Coronal Magnetography with FASR ­ 1 ­ Magnetic Sensitivity of Radio Emission There are three main radio emission mechanisms that operate in the Sun. In order of their usefulness for direct measurement of coronal magnetic fields, the broad families are gyroemission, free­free emission, and plasma emission

  10. Obstacle Avoidance and a Perturbation Sensitivity Model for Motor Planning

    E-Print Network [OSTI]

    Sabes, Philip

    Obstacle Avoidance and a Perturbation Sensitivity Model for Motor Planning Philip N. Sabes, Cambridge, Massachusetts 02139 A novel obstacle avoidance paradigm was used to investigate the planning of human reaching movements. We explored whether the CNS plans arm movements based entirely on the visual

  11. Blog Distillation via Sentiment-Sensitive Link Analysis

    E-Print Network [OSTI]

    Sebastiani, Fabrizio

    Blog Distillation via Sentiment-Sensitive Link Analysis Giacomo Berardi, Andrea Esuli, Fabrizio blog distillation by adding a link analysis phase to the standard retrieval-by-topicality phase, where in blog distillation. 1 Introduction Blog distillation is a subtask of blog search. It is defined

  12. Blog Distillation via Sentiment-Sensitive Link Analysis

    E-Print Network [OSTI]

    Sebastiani, Fabrizio

    Blog Distillation via Sentiment-Sensitive Link Analysis Giacomo Berardi, Andrea Esuli, Fabrizio report a new approach to blog distillation, defined as the task in which, given a user query, the system ranks the blogs in descending order of relevance to the query topic. Our approach is based on the idea

  13. Sensitivity of life insurance reserves via Markov semigroups

    E-Print Network [OSTI]

    Weber, Stefan

    insurance products whose benefits explicitly depend on capital markets In product design and capital scenarios Thus, sensitivities of insurance reserves with respect to the valuation basis are of particular for dividend payments from the surplus Define the market reserve V j of the contract in state j as V j (t, x

  14. Visual Sensitivity of River Recreation to Power Plants1

    E-Print Network [OSTI]

    the sensitivity of river-related recreational activities to visual intrusion by large coal-fired power plants is determined for each landscape type. These visual absorption values are then mapped along the case study river The State of Minnesota anticipates the construction of a considerable number of large new coal-fired power

  15. Sensitivity analysis of low-density jets and flames

    E-Print Network [OSTI]

    Chandler, Gary James

    2011-11-08

    This work represents the initial steps in a wider project that aims to map out the sensitive areas in fuel injectors and combustion chambers. Direct numerical simulation (DNS) using a Low-Mach-number formulation of the Navier–Stokes equations...

  16. Food sensitizes C. elegans avoidance behaviours through acute dopamine signalling

    E-Print Network [OSTI]

    Schafer, William R.

    Food sensitizes C. elegans avoidance behaviours through acute dopamine signalling Marina Ezcurra1 at NOVUM, Karolinska Institute, Huddinge, Sweden Many behavioural states are modulated by food avail of an external food source enhances avoidance responses to soluble repellents sensed by the polymodal ASH neurons

  17. Sensitivity of chemical reaction networks: a structural approach.

    E-Print Network [OSTI]

    Fiedler, Bernold

    Sensitivity of chemical reaction networks: a structural approach. 2. Regular monomolecular systems to perturbations of reaction rates in chemical reaction networks. Strong motivation for our study comes from recent For the deceptively innocent case of monomolecular reactions, only, we embark on a systematic mathematical analysis

  18. Suitability, Position Sensitivity Designations, and Related Personnel Matters

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

    1989-12-19

    The order identifies the interrelationships among suitability, security and access authorizations; to establish guidance and policy regarding position sensitivity designations, certain background investigations, and suitability determinations; and to establish the policies and procedures regarding waivers of pre-employment investigations. Chg 1, dated 7-8-92 supersedes DOE 3731.1.

  19. Using Provenance Patterns to Vet Sensitive Behaviors in Android Apps

    E-Print Network [OSTI]

    Gehani, Ashish

    Using Provenance Patterns to Vet Sensitive Behaviors in Android Apps Chao Yang1 , Guangliang Yang1- itive behaviors in Android apps. Dagger avoids costly instrumentation of virtual machines or modifications to the Android kernel. Instead, Dagger reconstructs the program semantics by tracking provenance

  20. Sensitivity Based Power Management of Enterprise Storage Systems Sriram Sankar

    E-Print Network [OSTI]

    Gurumurthi, Sudhanva

    Sensitivity Based Power Management of Enterprise Storage Systems Sriram Sankar Sudhanva Gurumurthi today. Storage systems constitute a significant fraction of the energy consumed in a data center and therefore enter- prise storage systems need to deliver high performance in an energy-efficient manner

  1. Arctic ozone loss and climate sensitivity: Updated threedimensional model study

    E-Print Network [OSTI]

    Feng, Wuhu

    Arctic ozone loss and climate sensitivity: Updated three­dimensional model study Chipperfield winter­spring chemical ozone loss from 1991 2003, its observed correlation with low temperatures. CTM throughout studied. The model reproduces large column winters also captures shape of ozone loss profile

  2. Power Grid Correction Using Sensitivity Analysis Meric Aydonat

    E-Print Network [OSTI]

    Najm, Farid N.

    Power Grid Correction Using Sensitivity Analysis Meric¸ Aydonat Department of ECE University University of Toronto Toronto, Ontario, Canada E-mail: f.najm@utoronto.ca Abstract--Power grid voltage verification has become a crucial step in reliable high-speed chip design. Power grid verification

  3. Sensitivity of Steel Casting Simulation Results to Alloy Property Datasets

    E-Print Network [OSTI]

    Beckermann, Christoph

    1 Sensitivity of Steel Casting Simulation Results to Alloy Property Datasets Kent D. Carlson these groupings to other casting simulation results, because such grouping neglects property variation effects. The effects of four property variations are studied here: (1) solidification shrinkage; (2) liquidus

  4. A Maternal Ahr Null Genotype Sensitizes Embryos to Chemical Teratogenesis*

    E-Print Network [OSTI]

    Bradfield, Christopher A.

    the toxicology and teratology of 2,3,7,8-tetrachlo- rodibenzo-p-dioxin (dioxin). In an effort to understand the role of the maternal compartment in dioxin teratol- ogy, we designed a breeding strategy that allowed this strategy, we demonstrate that embryos from the Ahr / dams are 5-fold more sensitive to dioxin-induced cleft

  5. Efficient Context-sensitive Word Completion for Mobile Devices

    E-Print Network [OSTI]

    Tilburg, Universiteit van

    savings, a measurable correlate of text entry effort gain, typically improve when the al- gorithm wouldEfficient Context-sensitive Word Completion for Mobile Devices Antal van den Bosch Tilburg Centre- volved in text entry on mobile devices and in augmentative com- munication devices, where efficiency

  6. SODA: Sensitivity Based Optimization of Disk Architecture San Diego, CA

    E-Print Network [OSTI]

    Gurumurthi, Sudhanva

    Disk drives, storage, power, performance, optimization. 1. INTRODUCTION We are in the era of dataSODA: Sensitivity Based Optimization of Disk Architecture Yan Zhang Qualcomm San Diego, CA zhangy R Stan ECE Dept., University of Virginia Charlottesville, VA mircea@virginia.edu ABSTRACT Storage

  7. Sensitivity Analysis of Dynamic Stability Indicators in Power Systems

    SciTech Connect (OSTI)

    Nguyen, Tony B.; Pai, M. A.

    2006-01-01

    Real time stability evaluation and preventive scheduling in power systems offers many challenges in a stressed power system. Through fast simulation of contingencies in real time it is possible to extract suitable information from the data and develop reliable metrics or indices to evaluate proximity of the system to an unstable condition. In this chapter we review the recent applications of the trajectory sensitivity analysis (TSA) technique in developing such indicators. Trajectory sensitivities can be used to compute critical parameters such as clearing time of circuit breakers, tie line flow, etc. in a power system by developing suitable norms for ease of interpretation. Alternatively it can be used along with the notion of Principal Singular Surfaces (PSS) to detect mode of instability (MOI). The TSA technique has the advantage that model complexity is not a limitation and the sensitivities are computed numerically. Suitable metrics are developed from these sensitivities. In addition to computing critical parameters, the TSA technique can be extended to do preventive rescheduling. A brief discussion of other applications of TSA is included as well as future areas of research.

  8. Learning Linear Classifiers Sensitive to Example Dependent and Noisy Costs

    E-Print Network [OSTI]

    Brefeld, Ulf

    Learning Linear Classifiers Sensitive to Example Dependent and Noisy Costs Peter Geibel, Ulf costs into ac- count or allow only costs depending on the classes of the examples that are used for learning. As an extension of class dependent costs, we con- sider costs that are example, i.e. feature

  9. Systems for increasing the sensitivity of gamma-ray imagers

    DOE Patents [OSTI]

    Mihailescu, Lucian; Vetter, Kai M.; Chivers, Daniel H.

    2012-12-11

    Systems that increase the position resolution and granularity of double sided segmented semiconductor detectors are provided. These systems increase the imaging resolution capability of such detectors, either used as Compton cameras, or as position sensitive radiation detectors in imagers such as SPECT, PET, coded apertures, multi-pinhole imagers, or other spatial or temporal modulated imagers.

  10. BUSINESS SENSITIVE 1 Tri-Cities Research District

    E-Print Network [OSTI]

    . Oklahoma City Presbyterian Foundation Research Park Virginia Biotechnology Park (Richmond) Industry in terms of business assistance or services Anchor with R&D facilities aligned with industry focus of parkBUSINESS SENSITIVE 1 Tri-Cities Research District Speaker Series: Advancing Research Parks

  11. Leakage-Resilient Cryptography with Key Derived from Sensitive Data

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Leakage-Resilient Cryptography with Key Derived from Sensitive Data Konrad Durnoga , Tomasz Kazana subject to adversarial leakage. We propose a method to derive keys for such protocols on-the-fly from the actual keys are derived from. That is, an adversary can hardly gain any knowledge about the private data

  12. Elastic alpha scattering experiments and the alpha-nucleus optical potential at low energies

    E-Print Network [OSTI]

    P. Mohr; G. G. Kiss; Zs. Fülöp; D. Galaviz; Gy. Gyürky; E. Somorjai

    2012-12-12

    High precision angular distribution data of ($\\alpha$,$\\alpha$) elastic scattering are presented for the nuclei $^{89}$Y, $^{92}$Mo, $^{106,110,116}$Cd, $^{112,124}$Sn, and $^{144}$Sm at energies around the Coulomb barrier. Such data with small experimental uncertainties over the full angular range (20-170 degrees) are the indispensable prerequisite for the extraction of local optical potentials and for the determination of the total reaction cross section $\\sigma_{\\rm{reac}}$. A systematic fitting procedure was applied to the presented experimental scattering data to obtain comprehensive local potential parameter sets which are composed of a real folding potential and an imaginary potential of Woods-Saxon surface type. The obtained potential parameters were used in turn to construct a new systematic $\\alpha$-nucleus potential with very few parameters. Although this new potential cannot reproduce the angular distributions with the same small deviations as the local potential, the new potential is able to predict the total reaction cross sections for all cases under study.

  13. Friction, impact, and electrostatic discharge sensitivities of energetic materials

    SciTech Connect (OSTI)

    Wang, P.S.; Hall, G.F.

    1985-05-31

    Impact, friction, and electrostatic discharge sensitivities of energetic materials (explosives and pyrotechnics) used or manufactured at Mound were tested by the ''one-shot'' method. The Bruceton statistical method was used to derive 50% initiation levels, and the results were compared. The materials tested include: PETN, HMX, Plastic Bonded Explosives (PBX), CP, TATB, RX26BB, RX26BH, barium styphnate, LX-15, LX-16, Ti/KClO/sub 4/, TiH/sub 0.65//KClO/sub 4/, TiH/sub 1.65//KClO/sub 4/, Fe/KClO/sub 4/, TiH/sub 1.75//B/CaCrO/sub 4/, Ti/B/CaCrO/sub 4/, B/CaCrO/sub 4/, TiH/sub 0.65//2B, TiH/sub 0.65//3B, 2Ti/B, TiH/sub 1.67//2B, Ti/2B, TiH/sub 1/67//3B, Ti/B, and Ti/3B. Some samples were investigated for aging effects, physical variables, and the effect of manufacturing paramters on sensitivities. The results show that in both friction and impact tests, CP and barium styphnate are the most sensitive; TiH/sub 1.65/KClO/sub 4/, LX-15, TATB and its related materials are the least sensitive; and other materials such as PETN and HMX are in the mid-range. In the electrostatic tests of Ti-based pyrotechnics, a decrease of sensitivity with increasing hydrogen concentration was observed. 20 refs., 12 figs., 7 tabs.

  14. The potential of renewable energy

    SciTech Connect (OSTI)

    Not Available

    1990-03-01

    On June 27 and 28, 1989, the US Department of Energy (DOE) national laboratories were convened to discuss plans for the development of a National Energy Strategy (NES) and, in particular, the analytic needs in support of NES that could be addressed by the laboratories. As a result of that meeting, interlaboratory teams were formed to produce analytic white papers on key topics, and a lead laboratory was designated for each core laboratory team. The broad-ranging renewables assignment is summarized by the following issue statement from the Office of Policy, Planning and Analysis: to what extent can renewable energy technologies contribute to diversifying sources of energy supply What are the major barriers to greater renewable energy use and what is the potential timing of widespread commercialization for various categories of applications This report presents the results of the intensive activity initiated by the June 1989 meeting to produce a white paper on renewable energy. Scores of scientists, analysts, and engineers in the five core laboratories gave generously of their time over the past eight months to produce this document. Their generous, constructive efforts are hereby gratefully acknowledged. 126 refs., 44 figs., 32 tabs.

  15. Wave Functions and Energy Terms of the SCHRÖdinger Equation with Two-Center Coulomb Plus Harmonic Oscillator Potential

    E-Print Network [OSTI]

    D. Matrasulov

    1998-04-17

    Schr\\"odinger equation for two center Coulomb plus harmonic oscillator potential is solved by the method of ethalon equation at large intercenter separations. Asymptotical expansions for energy term and wave function are obtained in the analytical form.

  16. Drawing driver's attention to potentially dangerous objects

    E-Print Network [OSTI]

    Kurugöl, Orc?un

    2008-01-01

    Drivers often have difficulties noticing potentially dangerous objects due to weather or lighting conditions or when their field of view is restricted. This thesis presents a display method for potentially dangerous objects ...

  17. Potential Energy and the Body Electric

    E-Print Network [OSTI]

    Helmreich, Stefan

    Physics tells us that potential energy is the capacity to do work that a body possesses as a result of its position in electric, magnetic, or gravitational fields. Thinking of “potentiality” in an electric idiom and with ...

  18. Generation region of pulsating aurora obtained simultaneously by the FAST satellite and a Syowa-Iceland conjugate pair of observatories

    E-Print Network [OSTI]

    California at Berkeley, University of

    Generation region of pulsating aurora obtained simultaneously by the FAST satellite and a Syowa-Iceland), with reference to simultaneous data obtained by a Syowa-Iceland conjugate pair of observatories. The aurora simultaneously by the FAST satellite and a Syowa-Iceland conjugate pair of observatories, J. Geophys. Res., 109

  19. Algorithm for obtaining the gradient expansion of the local density of states and the free energy of a superconductor

    E-Print Network [OSTI]

    Algorithm for obtaining the gradient expansion of the local density of states and the free energy for obtaining the gauge-invariant gradient expansion of the local density of states and the free energy confirm a recent calculation of the fourth order correction to the free energy by Kosztin, Kos, Stone

  20. Sensitivity of Surface Flux Simulations to Hydrologic Parameters Based on an Uncertainty Quantification Framework Applied to the Community Land Model

    SciTech Connect (OSTI)

    Hou, Zhangshuan; Huang, Maoyi; Leung, Lai-Yung R.; Lin, Guang; Ricciuto, Daniel M.

    2012-08-10

    Uncertainties in hydrologic parameters could have significant impacts on the simulated water and energy fluxes and land surface states, which will in turn affect atmospheric processes and the carbon cycle. Quantifying such uncertainties is an important step toward better understanding and quantification of uncertainty of integrated earth system models. In this paper, we introduce an uncertainty quantification (UQ) framework to analyze sensitivity of simulated surface fluxes to selected hydrologic parameters in the Community Land Model (CLM4) through forward modeling. Thirteen flux tower footprints spanning a wide range of climate and site conditions were selected to perform sensitivity analyses by perturbing the parameters identified. In the UQ framework, prior information about the parameters was used to quantify the input uncertainty using the Minimum-Relative-Entropy approach. The quasi-Monte Carlo approach was applied to generate samples of parameters on the basis of the prior pdfs. Simulations corresponding to sampled parameter sets were used to generate response curves and response surfaces and statistical tests were used to rank the significance of the parameters for output responses including latent (LH) and sensible heat (SH) fluxes. Overall, the CLM4 simulated LH and SH show the largest sensitivity to subsurface runoff generation parameters. However, study sites with deep root vegetation are also affected by surface runoff parameters, while sites with shallow root zones are also sensitive to the vadose zone soil water parameters. Generally, sites with finer soil texture and shallower rooting systems tend to have larger sensitivity of outputs to the parameters. Our results suggest the necessity of and possible ways for parameter inversion/calibration using available measurements of latent/sensible heat fluxes to obtain the optimal parameter set for CLM4. This study also provided guidance on reduction of parameter set dimensionality and parameter calibration framework design for CLM4 and other land surface models under different hydrologic and climatic regimes.

  1. ASSESSMENT OF HOUSEHOLD CARBON FOOTPRINT REDUCTION POTENTIALS

    E-Print Network [OSTI]

    Masanet, Eric

    2010-01-01

    Energy Efficient Technology Potentials. 31 Conclusions and Recommendations 42 References. 45 Glossary . 50 Appendix 51 ii List

  2. Potential of Diazorphic, Endophytic Bacteria Associated with...

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

    of Diazorphic, Endophytic Bacteria Associated with Sugarcane for Energycane Production Potential of Diazorphic, Endophytic Bacteria Associated with Sugarcane for Energycane...

  3. Potential for Biofuels from Algae (Presentation)

    SciTech Connect (OSTI)

    Pienkos, P. T.

    2007-11-15

    Presentation on the potential for biofuels from algae presented at the 2007 Algae Biomass Summit in San Francisco, CA.

  4. Partners and Stakeholders: Roles and Potential Impact

    Broader source: Energy.gov [DOE]

    Partners and Stakeholders: Roles and Potential Impact, Chapter 6 from the Clean Energy Finance Guide, Third Edition

  5. Time-Sensitive Utility-Based Routing inTime-Sensitive Utility-Based Routing inTime-Sensitive Utility-Based Routing inTime-Sensitive Utility-Based Routing in Duty-Cycle Wireless Sensor Networks withDuty-Cycle Wireless Sensor Networks withDuty-Cycle Wireles

    E-Print Network [OSTI]

    Wu, Jie

    Time-Sensitive Utility-Based Routing inTime-Sensitive Utility-Based Routing inTime-Sensitive Utility-Based Routing inTime-Sensitive Utility-Based Routing in Duty-Cycle Wireless Sensor Networks with TEMPLE UNIVERSITY #12;Introduction: utility-based routingIntroduction: utility-based routing

  6. Climate sensitivity is investigated for 10 models that are participating in the IPCC Fourth Assessment Report.We consider the temporal evolution of climate sensitivity

    E-Print Network [OSTI]

    ABSTRACT Climate sensitivity is investigated for 10 models that are participating in the IPCC Fourth Assessment Report.We consider the temporal evolution of climate sensitivity and we analyze the transient climate sensitivity from fully coupled simulations with a 1% per year increase in CO2 in terms

  7. Potential Energy Surfaces Donald G. Truhlar

    E-Print Network [OSTI]

    Truhlar, Donald G

    . Meyers (Academic Press, New York, 2001), Vol. 13, pages 9-17. httpPotential Energy Surfaces Donald G. Truhlar University of Minnesota I. Introduction II. Quantum Mechanical Basis for Adiabatic Potential Energy Surfaces III. Topology of Adiabatic Potential Energy Surfaces

  8. LABORATORY II ELECTRIC FIELDS AND ELECTRIC POTENTIALS

    E-Print Network [OSTI]

    Minnesota, University of

    Lab II - 1 LABORATORY II ELECTRIC FIELDS AND ELECTRIC POTENTIALS In this lab you will continue the concepts of field and potential are abstract and difficult to visualize, this laboratory uses a computer and electric potential at any point in space. OBJECTIVES After successfully completing this laboratory, you

  9. Reduced MHD in Nearly Potential Magnetic Fields

    E-Print Network [OSTI]

    Strauss, Hank

    Reduced MHD in Nearly Potential Magnetic Fields H.R. Strauss Courant Institute of Mathematical that the magnetic field is close to a potential field. The potential field can have an arbitrary three dimensional. It is also the case in solar and stellar coronal magnetic fields, and in regions of the geomagnetic field

  10. Kazakhstan's potential provides Western opportunities

    SciTech Connect (OSTI)

    Darnell, R. )

    1993-01-01

    While crude oil production continues to drop in the Russian Federation at a rate of 15% to 20% per year, Kazakhstan's output rose from 440,000 bopd in 1991 to 446,000 bopd, as of November 1992. Much of this increase was exported to the Russian Federation to supplement the latter's declining production. while Kazakhstan received needed Russian goods in exchange for this oil, it isn't getting the hard currency that will be required to upgrade its petroleum industry. This is a serious problem for Kazakh officials, since they are counting on revenues from petroleum exports to invigorate their overall plan for economic growth in this newly independent country. In order to convert Kazakhstan's hydrocarbon potential into economic reality, two critical issues must be addressed immediately. First, Kazakhstan must develop a tax and minerals law that gives multinational petroleum companies an incentive to invest in opening a dedicated crude oil export route through Russia, and at least one alternate export route to the Caspian Sea or Persian Gulf. At present, even the most successful petroleum venture inside Kazakhstan would have to weave its way through the Russian bureaucracy to utilize that existing and inadequate export pipeline system. This quandary, of course, has recently become the undoing of several Western petroleum operations that have managed to actually produce exportable oil inside the Russian Federation itself, but they can't get it out. In addition, three other variables should be considered by any party that is evaluating Kazakhstan as a future area (see map for current fields) of interest for petroleum operations. These are political stability, field operating conditions, and the country's natural gas crisis. Each of these factors, though not as critical as the legal regime and export access, can radically affect how an operator might approach negotiating the terms of its particular project.

  11. Development of a SCALE Tool for Continuous-Energy Eigenvalue Sensitivity Coefficient Calculations

    SciTech Connect (OSTI)

    Perfetti, Christopher M [ORNL] [ORNL; Rearden, Bradley T [ORNL] [ORNL

    2013-01-01

    Two methods for calculating eigenvalue sensitivity coefficients in continuous-energy Monte Carlo applications were implemented in the KENO code within the SCALE code package. The methods were used to calculate sensitivity coefficients for several criticality safety problems and produced sensitivity coefficients that agreed well with both reference sensitivities and multigroup TSUNAMI-3D sensitivity coefficients. The newly developed CLUTCH method was observed to produce sensitivity coefficients with high figures of merit and low memory requirements, and both continuous-energy sensitivity methods met or exceeded the accuracy of the multigroup TSUNAMI-3D calculations.

  12. Continuous-energy eigenvalue sensitivity coefficient calculations in TSUNAMI-3D

    SciTech Connect (OSTI)

    Perfetti, C. M.; Rearden, B. T. [Oak Ridge National Laboratory, Reactor and Nuclear Systems Division, P.O. Box 2008, Oak Ridge, TN 37831-6170 (United States)

    2013-07-01

    Two methods for calculating eigenvalue sensitivity coefficients in continuous-energy Monte Carlo applications were implemented in the KENO code within the SCALE code package. The methods were used to calculate sensitivity coefficients for several test problems and produced sensitivity coefficients that agreed well with both reference sensitivities and multigroup TSUNAMI-3D sensitivity coefficients. The newly developed CLUTCH method was observed to produce sensitivity coefficients with high figures of merit and a low memory footprint, and both continuous-energy sensitivity methods met or exceeded the accuracy of the multigroup TSUNAMI-3D calculations. (authors)

  13. Explicit Expressions for 3D Boundary Integrals in Potential Theory

    SciTech Connect (OSTI)

    Nintcheu Fata, Sylvain

    2009-01-01

    On employing isoparametric, piecewise linear shape functions over a flat triangular domain, exact expressions are derived for all surface potentials involved in the numerical solution of three-dimensional singular and hyper-singular boundary integral equations of potential theory. These formulae, which are valid for an arbitrary source point in space, are represented as analytic expressions over the edges of the integration triangle. They can be used to solve integral equations defined on polygonal boundaries via the collocation method or may be utilized as analytic expressions for the inner integrals in the Galerkin technique. Also, the constant element approximation can be directly obtained with no extra effort. Sample problems solved by the collocation boundary element method for the Laplace equation are included to validate the proposed formulae.

  14. Fusion-fission reactions with modified Woods-Saxon potential

    E-Print Network [OSTI]

    Ning Wang; Kai Zhao; Werner Scheid; Xizhen Wu

    2007-12-15

    A modified Woods-Saxon potential model is proposed for a unified description of the entrance channel fusion barrier and the fission barrier of fusion-fission reactions based on the Skyrme energy-density functional approach. The fusion excitation functions of 120 reactions have been systematically studied. The fusion (capture) cross sections are well described with the calculated potential and an empirical barrier distribution. Incorporating a statistical model (HIVAP code) for describing the decay of the compound nucleus, the evaporation residue (and fission) cross sections of 51 fusion-fission reactions have been systematically investigated. Optimal values of some key parameters of the HIVAP code are obtained based on the experimental data of these reactions. The experimental data are reasonably well reproduced by the calculated results. The upper and lower confidence limits of the systematic errors of the calculated results are given.

  15. Higgs effective potential in a perturbed Robertson-Walker background

    E-Print Network [OSTI]

    Antonio L. Maroto; Francisco Prada

    2014-12-15

    We calculate the one-loop effective potential of a scalar field in a Robertson-Walker background with scalar metric perturbations. A complete set of orthonormal solutions of the perturbed equations is obtained by using the adiabatic approximation for comoving observers. After analyzing the problem of renormalization in inhomogeneous backgrounds, we get the explicit contribution of metric perturbations to the effective potential. We apply these results to the Standard Model Higgs field and evaluate the effects of metric perturbations on the Higgs mass and on its vacuum expectation value. Space-time variations are found, which are proportional to the gravitational slip parameter, with a typical amplitude of the order of $\\Delta\\phi/\\phi\\simeq 10^{-11}$ on cosmological scales. We also discuss possible astrophysical signatures in the Solar System and in the Milky Way that could open new possibilities to explore the symmetry breaking sector of the electroweak interactions.

  16. Potential of Geo-neutrino Measurements at JUNO

    E-Print Network [OSTI]

    Ran Han; Yu-Feng Li; Liang Zhan; William F. McDonough; Jun Cao

    2015-10-07

    The flux of geoneutrinos at any point on the Earth is a function of the abundance and distribution of radioactive elements within our planet. This flux has been successfully detected by the 1-kt KamLAND and 0.3-kt Borexino detectors with these measurements being limited by their low statistics. The planned 20-kt JUNO detector will provide an exciting opportunity to obtain a high statistics measurement, which will provide data to address several questions of geological importance. This paper presents the JUNO detector design concept, the expected geo-neutrino signal and corresponding backgrounds. The precision level of geo-neutrino measurements at JUNO is obtained with the standard least-squares method. The potential of the Th/U ratio and mantle measurements is also discussed.

  17. Potential of Geo-neutrino Measurements at JUNO

    E-Print Network [OSTI]

    Han, Ran; Zhan, Liang; McDonough, William F; Cao, Jun

    2015-01-01

    The flux of geoneutrinos at any point on the Earth is a function of the abundance and distribution of radioactive elements within our planet. This flux has been successfully detected by the 1-kt KamLAND and 0.3-kt Borexino detectors with these measurements being limited by their low statistics. The planned 20-kt JUNO detector will provide an exciting opportunity to obtain a high statistics measurement, which will provide data to address several questions of geological importance. This paper presents the JUNO detector design concept, the expected geo-neutrino signal and corresponding backgrounds. The precision level of geo-neutrino measurements at JUNO is obtained with the standard least-squares method. The potential of the Th/U ratio and mantle measurements is also discussed.

  18. Solutions of the Schrödinger equation with inversely quadratic Hellmann plus inversely quadratic potential using Nikiforov-Uvarov method

    SciTech Connect (OSTI)

    Ita, B. I.

    2014-11-12

    By using the Nikiforov-Uvarov (NU) method, the Schrödinger equation has been solved for the interaction of inversely quadratic Hellmann (IQHP) and inversely quadratic potential (IQP) for any angular momentum quantum number, l. The energy eigenvalues and their corresponding eigenfunctions have been obtained in terms of Laguerre polynomials. Special cases of the sum of these potentials have been considered and their energy eigenvalues also obtained.

  19. Radiation sensitive devices and systems for detection of radioactive materials and related methods

    DOE Patents [OSTI]

    Kotter, Dale K

    2014-12-02

    Radiation sensitive devices include a substrate comprising a radiation sensitive material and a plurality of resonance elements coupled to the substrate. Each resonance element is configured to resonate responsive to non-ionizing incident radiation. Systems for detecting radiation from a special nuclear material include a radiation sensitive device and a sensor located remotely from the radiation sensitive device and configured to measure an output signal from the radiation sensitive device. In such systems, the radiation sensitive device includes a radiation sensitive material and a plurality of resonance elements positioned on the radiation sensitive material. Methods for detecting a presence of a special nuclear material include positioning a radiation sensitive device in a location where special nuclear materials are to be detected and remotely interrogating the radiation sensitive device with a sensor.

  20. Finite-range model potentials for resonant interactions

    E-Print Network [OSTI]

    Bimalendu Deb

    2015-12-04

    We show that it is possible to model two-body resonant interactions at low energy with a class of finite-range potentials based on the methods of Jost and Kohn. These potentials are expressed in terms of the effective range $r_0$ and the $s$-wave scattering length $a_s$. We derive continuum solutions of these potentials. By writing $V_{\\pm}(r) = V_{0}(r) + V_{\\pm}^{\\epsilon}(r)$, where the sign +(-) refers to positive(negative) scattering length, $ V_{0}(r)$ is of the form of P\\"{o}schl-Teller potential and $V_{\\pm}^{\\epsilon}$ is expressed as a power series of the small parameter $\\epsilon = (\\sqrt{1 - 2 r_0/a_s})^{-1} - 1 $ when $a_s$ is large, we derive Green function of $V_{0}(r)$. Using the Green function, solutions of $V_{\\pm}(r)$ for $|a_s| >\\!> r_0$ can be obtained numerically by treating $V_{\\pm}^{\\epsilon}(r)$as a perturbation. We describe the threshold behavior of scattering phase shift for $V_{0}(r)$. This study may be important for developing a better understanding of physics of strongly interacting ultracold atomic gases with tunable interactions.

  1. CP violation conditions in N-Higgs-doublet potentials

    E-Print Network [OSTI]

    C. C. Nishi

    2007-10-26

    Conditions for CP violation in the scalar potential sector of general N-Higgs-doublet models (NHDMs) are analyzed from a group theoretical perspective. For the simplest two-Higgs-doublet model (2HDM) potential, a minimum set of conditions for explicit and spontaneous CP violation is presented. The conditions can be given a clear geometrical interpretation in terms of quantities in the adjoint representation of the basis transformation group for the two doublets. Such conditions depend on CP-odd pseudoscalar invariants. When the potential is CP invariant, the explicit procedure to reach the real CP-basis and the explicit CP transformation can also be obtained. The procedure to find the real basis and the conditions for CP violation are then extended to general NHDM potentials. The analysis becomes more involved and only a formal procedure to reach the real basis is found. Necessary conditions for CP invariance can still be formulated in terms of group invariants: the CP-odd generalized pseudoscalars. The problem can be completely solved for three Higgs-doublets.

  2. Separable Representation of Proton-Nucleus Optical Potentials

    E-Print Network [OSTI]

    L. Hlophe; V. Eremenko; Ch. Elster; F. M. Nunes; G. Arbanas; J. E. Escher; I. J. Thompson

    2014-09-14

    Recently, a new approach for solving the three-body problem for (d,p) reactions in the Coulomb-distorted basis in momentum space was proposed. Important input quantities for such calculations are the scattering matrix elements for proton- and neutron-nucleus scattering. We present a generalization of the Ernst-Shakin-Thaler scheme in which a momentum space separable representation of proton-nucleus scattering matrix elements can be calculated in the Coulomb basis. The viability of this method is demonstrated by comparing S-matrix elements obtained for p$+^{48}$Ca and p$+^{208}$Pb for a phenomenological optical potential with corresponding coordinate space calculations.

  3. Fast Response and High Sensitivity ZnO/glass Surface Acoustic Wave Humidity Sensors Using Graphene Oxide Sensing Layer

    E-Print Network [OSTI]

    Xuan, Weipeng; He, Mei; Meng, Nan; He, Xingli; Wang, Wenbo; Chen, Jinkai; Shi, Tianjin; Hasan, Tawfique; Xu, Zhen; Xu, Yang; Luo, J. K.

    2014-11-26

    FT-IR spectrum obtained from our GO samples. A strong and broad valley at 3413 cm21 is attributed to the -OH groups in stretching vibrations. This peak implies the good hydro- philicity of the GO samples used for our humidity sensing. Other absorption... the resonance and sensitivity of the SAW devices. Our approach of using an optimized proper thickness of GO layer over the whole surface of the SAW sensors provides a very large effective sensing surface for moisture adsorption without affecting the per...

  4. Static potentials for quarkonia at finite temperatures

    E-Print Network [OSTI]

    Owe Philipsen

    2008-10-26

    We review non-perturbative static potentials commonly used in potential models for quarkonia at finite T. Potentials derived from Polyakov loop correlators are shown to be inappropriate for this purpose. The q\\bar{q} free energy is physical but has the wrong spatial decay and perturbative limit. The so-called singlet free energy is gauge dependent and unphysical. An appropriate static real time potential can be defined through a generalisation of pNRQCD to finite T. In perturbation theory, its real part reproduces the Debye-screened potential, its imaginary part accounts for Landau damping. Possibilities for its non-perturbative evaluation are discussed.

  5. Sensitivity analysis of GSI based mechanical characterization of rock mass

    E-Print Network [OSTI]

    Ván, P

    2012-01-01

    Recently, the rock mechanical and rock engineering designs and calculations are frequently based on Geological Strength Index (GSI) method, because it is the only system that provides a complete set of mechanical properties for design purpose. Both the failure criteria and the deformation moduli of the rock mass can be calculated with GSI based equations, which consists of the disturbance factor, as well. The aim of this paper is the sensitivity analysis of GSI and disturbance factor dependent equations that characterize the mechanical properties of rock masses. The survey of the GSI system is not our purpose. The results show that the rock mass strength calculated by the Hoek-Brown failure criteria and both the Hoek-Diederichs and modified Hoek-Diederichs deformation moduli are highly sensitive to changes of both the GSI and the D factor, hence their exact determination is important for the rock engineering design.

  6. Magnetic relaxometry as applied to sensitive cancer detection and localization

    SciTech Connect (OSTI)

    De Haro, Leyma P.; Karaulanov, Todor; Vreeland, Erika C.; Anderson, Bill; Hathaway, Helen J.; Huber, Dale L.; Matlashov, Andrei N.; Nettles, Christopher P.; Price, Andrew D.; Monson, Todd C.; Flynn, Edward R.

    2015-06-02

    Abstract

    Here we describe superparamagnetic relaxometry (SPMR), a technology that utilizes highly sensitive magnetic sensors and superparamagnetic nanoparticles for cancer detection. Using SPMR, we sensitively and specifically detect nanoparticles conjugated to biomarkers for various types of cancer. SPMR offers high contrast

    In SPMR measurements, a brief magnetizing pulse is used to align superparamagnetic nanoparticles of a discrete size. Following the pulse, an array of superconducting quantum interference detectors (SQUID) sensors detect the decaying magnetization field. NP size is chosen so that, when bound, the induced field decays in seconds. They are functionalized with specific biomarkers and incubated with cancer cells

    As a result, superparamagnetic NPs developed here have small size dispersion. Cell incubation studies measure specificity for different cell lines and antibodies with very high contrast.

  7. Scalable analysis tools for sensitivity analysis and UQ (3160) results.

    SciTech Connect (OSTI)

    Karelitz, David B.; Ice, Lisa G.; Thompson, David C.; Bennett, Janine C.; Fabian, Nathan; Scott, W. Alan; Moreland, Kenneth D.

    2009-09-01

    The 9/30/2009 ASC Level 2 Scalable Analysis Tools for Sensitivity Analysis and UQ (Milestone 3160) contains feature recognition capability required by the user community for certain verification and validation tasks focused around sensitivity analysis and uncertainty quantification (UQ). These feature recognition capabilities include crater detection, characterization, and analysis from CTH simulation data; the ability to call fragment and crater identification code from within a CTH simulation; and the ability to output fragments in a geometric format that includes data values over the fragments. The feature recognition capabilities were tested extensively on sample and actual simulations. In addition, a number of stretch criteria were met including the ability to visualize CTH tracer particles and the ability to visualize output from within an S3D simulation.

  8. A power sensitivity model for electromechanical oscillation studies

    SciTech Connect (OSTI)

    Deckmann, S.M.; Costa, V.F. da (Unicamp, Campinas (Brazil))

    1994-05-01

    This paper describes the derivation of a power sensitivity model for dynamic studies of power systems, subjected to normal operation disturbances. The need of an infinite bus representation is avoided with the linearized nodal power balance approach. This permits the model to be easily extended to any number of network buses. In the linearized form, the resulting Power Sensitivity Model (PSM), presents some interesting features, such as decoupled modeling and time scale decomposition properties. For presentation reasons, the PSM is first derived for a single generator connected to an infinite bus. Its performance is then compared with the classical Heffron-Phillips Model (HPM), as described by de Mello and Concordia. It is then extended for multinodal networks.

  9. Long vs. short-term energy storage:sensitivity analysis.

    SciTech Connect (OSTI)

    Schoenung, Susan M. (Longitude 122 West, Inc., Menlo Park, CA); Hassenzahl, William V. (,Advanced Energy Analysis, Piedmont, CA)

    2007-07-01

    This report extends earlier work to characterize long-duration and short-duration energy storage technologies, primarily on the basis of life-cycle cost, and to investigate sensitivities to various input assumptions. Another technology--asymmetric lead-carbon capacitors--has also been added. Energy storage technologies are examined for three application categories--bulk energy storage, distributed generation, and power quality--with significant variations in discharge time and storage capacity. Sensitivity analyses include cost of electricity and natural gas, and system life, which impacts replacement costs and capital carrying charges. Results are presented in terms of annual cost, $/kW-yr. A major variable affecting system cost is hours of storage available for discharge.

  10. Bayesian failure probability model sensitivity study. Final report

    SciTech Connect (OSTI)

    Not Available

    1986-05-30

    The Office of the Manager, National Communications System (OMNCS) has developed a system-level approach for estimating the effects of High-Altitude Electromagnetic Pulse (HEMP) on the connectivity of telecommunications networks. This approach incorporates a Bayesian statistical model which estimates the HEMP-induced failure probabilities of telecommunications switches and transmission facilities. The purpose of this analysis is to address the sensitivity of the Bayesian model. This is done by systematically varying two model input parameters--the number of observations, and the equipment failure rates. Throughout the study, a non-informative prior distribution is used. The sensitivity of the Bayesian model to the noninformative prior distribution is investigated from a theoretical mathematical perspective.

  11. Reaching the quantum limit of sensitivity in electron spin resonance

    E-Print Network [OSTI]

    A. Bienfait; J. J. Pla; Y. Kubo; M. Stern; X. Zhou; C. C. Lo; C. D. Weis; T. Schenkel; M. L. W. Thewalt; D. Vion; D. Esteve; B. Julsgaard; K. Moelmer; J. J. L. Morton; P. Bertet

    2015-07-24

    We report pulsed electron-spin resonance (ESR) measurements on an ensemble of Bismuth donors in Silicon cooled at 10mK in a dilution refrigerator. Using a Josephson parametric microwave amplifier combined with high-quality factor superconducting micro-resonators cooled at millikelvin temperatures, we improve the state-of-the-art sensitivity of inductive ESR detection by nearly 4 orders of magnitude. We demonstrate the detection of 1700 bismuth donor spins in silicon within a single Hahn echo with unit signal-to-noise (SNR) ratio, reduced to just 150 spins by averaging a single Carr-Purcell-Meiboom-Gill sequence. This unprecedented sensitivity reaches the limit set by quantum fluctuations of the electromagnetic field instead of thermal or technical noise, which constitutes a novel regime for magnetic resonance.

  12. Analytical solutions of a generalized non-central potential in N-dimensions

    SciTech Connect (OSTI)

    Durmus, Aysen; Özfidan, Aysel

    2014-10-15

    We present that N-dimensional non-relativistic wave equation for the generalized non-central potential with arbitrary angular momentum is analytically solvable in the hyperspherical coordinates. Asymptotic iteration method as a different approach is applied to obtain N-dimensional energy eigenvalues and the corresponding eigenfunctions. In hyperspherical coordinates, the wave function solutions are obtained in terms of hypergeometric functions and Jacobi polynomials. The bound states of quantum systems under consideration for some special cases, such as Hartmann and Makarov potentials, have been discussed in N-dimensions.

  13. Reaction Rate Sensitivity of the gamma-Process Path

    E-Print Network [OSTI]

    T. Rauscher

    2004-07-16

    The location of the (gamma,p)/(gamma,n) and (gamma,alpha)/(gamma,n) line at gamma-process temperatures is discussed, using recently published reaction rates based on global Hauser-Feshbach calculations. The results can directly be compared to previously published, classic gamma-process discussions. The nuclei exhibiting the largest sensitivity to uncertainties in nuclear structure and reaction parameters are specified.

  14. Climate Sensitivity of the Community Climate System Model, Version 4

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

    Bitz, Cecilia M.; Shell, K. M.; Gent, P. R.; Bailey, D. A.; Danabasoglu, G.; Armour, K. C.; Holland, M. M.; Kiehl, J. T.

    2012-05-01

    Equilibrium climate sensitivity of the Community Climate System Model Version 4 (CCSM4) is 3.20°C for 1° horizontal resolution in each component. This is about a half degree Celsius higher than in the previous version (CCSM3). The transient climate sensitivity of CCSM4 at 1° resolution is 1.72°C, which is about 0.2°C higher than in CCSM3. These higher climate sensitivities in CCSM4 cannot be explained by the change to a preindustrial baseline climate. We use the radiative kernel technique to show that from CCSM3 to CCSM4, the global mean lapse-rate feedback declines in magnitude, and the shortwave cloud feedback increases. These twomore »warming effects are partially canceled by cooling due to slight decreases in the global mean water-vapor feedback and longwave cloud feedback from CCSM3 to CCSM4. A new formulation of the mixed-layer, slab ocean model in CCSM4 attempts to reproduce the SST and sea ice climatology from an integration with a full-depth ocean, and it is integrated with a dynamic sea ice model. These new features allow an isolation of the influence of ocean dynamical changes on the climate response when comparing integrations with the slab ocean and full-depth ocean. The transient climate response of the full-depth ocean version is 0.54 of the equilibrium climate sensitivity when estimated with the new slab ocean model version for both CCSM3 and CCSM4. We argue the ratio is the same in both versions because they have about the same zonal mean pattern of change in ocean surface heat flux, which broadly resembles the zonal mean pattern of net feedback strength.« less

  15. Development of a fast position-sensitive laser beam detector

    SciTech Connect (OSTI)

    Chavez, Isaac; Huang Rongxin; Henderson, Kevin; Florin, Ernst-Ludwig; Raizen, Mark G. [Center for Nonlinear Dynamics and Department of Physics, University of Texas at Austin, Austin, Texas 78712 (United States)

    2008-10-15

    We report the development of a fast position-sensitive laser beam detector. The detector uses a fiber-optic bundle that spatially splits the incident beam, followed by a fast balanced photodetector. The detector is applied to the study of Brownian motion of particles on fast time scales with 1 A spatial resolution. Future applications include the study of molecule motors, protein folding, as well as cellular processes.

  16. PV Conversion Technologies, Session: OPV, Sensitized, Seed (Presentation)

    SciTech Connect (OSTI)

    Frank, A. J.

    2008-04-01

    The NREL Sensitized Solar Cell (SSC) Core Program supports the Solar America Initiative by: (1) targeting new devices and processes for commercialization by 2015 that are less expensive, more efficient, highly reliable, and environmentally benign; (2) collaborating with DOE OS/BES to conduct basic research targeting breakthroughs in key areas, such as ultra-high efficiency and/or ultra-low cost materials and devices.

  17. Horizontal film balance having wide range and high sensitivity

    DOE Patents [OSTI]

    Abraham, B.M.; Miyano, K.; Ketterson, J.B.

    1981-03-05

    A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed.

  18. Horizontal film balance having wide range and high sensitivity

    DOE Patents [OSTI]

    Abraham, Bernard M. (Oak Park, IL); Miyano, Kenjiro (Downers Grove, IL); Ketterson, John B. (Evanston, IL)

    1983-01-01

    A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed.

  19. Horizontal film balance having wide range and high sensitivity

    DOE Patents [OSTI]

    Abraham, B.M.; Miyano, K.; Ketterson, J.B.

    1983-11-08

    A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed. 5 figs.

  20. Radial electron collection in dye-sensitized solar cells.

    SciTech Connect (OSTI)

    Martinson, A. B. B.; Elam, J. W.; Liu, J.; Pellin, M. J.; Marks, T. J.; Hupp, J. T.; Materials Science Division; Northwestern Univ.

    2008-01-01

    We introduce a new photoelectrode architecture consisting of concentric conducting and semiconducting nanotubes for use in dye-sensitized solar cells (DSSCs). Atomic layer deposition is employed to grow indium tin oxide (ITO) within a porous template and subsequently coat the high area photoelectrode with amorphous TiO2. Compared with control devices lacking a current collector within the pores, the new photoelectrode geometry exhibits dramatically higher current densities, an effect attributed to the radial collection of electrons.